Vaccines with enhanced immunogenicity, low allergenicity and reactogenicity

Abstract

Field of application: the invention relates to veterinary medicine and, in particular, to vaccinology and pharmacy, and is intended for the prevention and treatment of infectious and other diseases of humans and animals, where low allergenic low reactogenic vaccination is used. The essence of the invention: developed vaccines with increased immunogenicity, low allergenicity and reactogenicity, containing antigen/toxin and adjuvant, wherein that they contain vaccine antigen/toxin inactivated by electromagnetic radiation in the ultraviolet and visible regions of the spectrum in the presence of a solution of photosensitizer and salts of divalent metals, and then covalently modified according to the residues of amino groups and hydroxyls groups of antigen/toxin available for modification, at least two modifying agents at the same time in terms of 0.01-10.0% of the mass concentration of the antigen/toxin protein, and as an adjuvant it contains hydrosol hydroxide ferric chloride.

Claims

1. A vaccine, comprising an antigen and an adjuvant, wherein the vaccine antigen is inactivated by ultraviolet and visible light in the presence of a solution of photosensitizer and divalent metal salts, and then the vaccine antigen is covalently modified simultaneously with at least two modifying agents at amino groups and alcohol hydroxyl groups that are accessible for modification, wherein the at least two modifying agents are employed at a concentration of 0.01-10.0% by mass relative to the antigen, and the adjuvant contains an iron hydroxide hydrosol.

2. The vaccine according to claim 1, wherein the photosensitizer is a riboflavin, a riboflavin mononucleotide, or a riboflavin dinucleotide.

3. The vaccine according to claim 1, wherein the photosensitizer is methylene blue, toluidine blue, or dimethylmethylene blue.

4. The vaccine according to claim 1, wherein the photosensitizer is a chlorophyll, a hematoporphyrin, or a cobalamin.

5. The vaccine according to claim 1, wherein the photosensitizer includes one or more of a riboflavin, a riboflavin mononucleotide, a riboflavin dinucleotide, methylene blue, toluidine blue, dimethylmethylene blue, a chlorophyll, a hematoporphyrin, and a cobalamin.

6. The vaccine according to claim 1, wherein the vaccine antigen is a corpuscle of a living microorganism.

7. The vaccine according to claim 1, wherein the vaccine antigen is a phagolysate of the microorganism.

8. The vaccine according to claim 1, wherein the vaccine antigen is a virion.

9. The vaccine according to claim 1, wherein the vaccine antigen is a microbial exotoxin.

10. The vaccine according to claim 1, wherein the vaccine antigen is a microbial endotoxin.

11. The vaccine according to claim 1, wherein the vaccine antigen is a microbial glycoprotein.

12. The vaccine according to claim 1, wherein the vaccine antigen is a mixture of microbial glycoproteins.

13. The vaccine according to claim 1, wherein the vaccine antigen is a microbial peptide.

14. The vaccine according to claim 1, wherein the vaccine antigen is a mixture of microbial peptides.

15. The vaccine according to claim 1, wherein the vaccine antigen is a microbial polysaccharide.

16. The vaccine according to claim 1, wherein the vaccine antigen is a mixture of microbial polysaccharides.

17. The vaccine according to claim 1, wherein the vaccine antigen is a microbial lipopolysaccharide.

18. The vaccine according to claim 1, wherein the vaccine antigen is a mixture of microbial lipopolysaccharides.

19. The vaccine according to claim 1, wherein the vaccine antigen is a whole virion.

20. The vaccine according to claim 1, wherein the vaccine antigen is a viral protein.

21. The vaccine according to claim 1, wherein the vaccine antigen is a mixture of viral proteins.

22. The vaccine according to claim 1, wherein the vaccine antigen is a mixture of an antigen protein pre-cut into fragments using proteases, including, but not limited to trypsin, pepsin, proteinase-K, chymotrypsin.

23. The vaccine according to claim 1, wherein the vaccine antigen is a mixture of an antigen protein, previously cut into fragments using synthetic proteases.

24. The vaccine according to claim 1, wherein the salts of divalent metals are separately mixed with each other as water-soluble salts, and include one or more of magnesium, calcium, zinc, iron, copper, strontium, cobalt, and nickel salts.

25. The vaccine according to claim 1, wherein the amino groups and alcohol hydroxyl groups that are accessible for covalent modification are present on lysine and histidine residues of a protein component of the antigen, the covalent modification is acylation and the at least two modifying agents include carboxylic and polycarboxylic acid anhydrides.

26. The vaccine according to claim 1, wherein the amino groups and alcohol hydroxyl groups that are accessible for covalent modification are present on lysine and histidine residues of a protein component of the antigen, the covalent modification is alkylation and the at least two modifying agents include halogen-substituted carboxylic and polycarboxylic acids.

27. The vaccine according to claim 1, wherein the amino groups and alcohol hydroxyl groups that are accessible for covalent modification are present on lysine and histidine residues of a protein component of the antigen, the covalent modification includes both acylation and alkylation and the at least two modifying agents include anhydrides of carboxylic and polycarboxylic acids and halogen-substituted carboxylic and polycarboxylic acids, respectively.

Description

THE BEST EMBODIMENT OF THE INVENTION

Example 1—Obtaining a Corpuscular Vaccine

(1) Inactivation of bacteria by the example of Pseudomonas aeruginosa using the method of photodynamic inactivation.

(2) Pseudomonas aeruginosa was cultured on solid nutrient medium (Mueller-Hinton medium (MHA) with the addition of 1% glucose). Three days later, the surface of the nutrient medium was completely covered with P. aeruginosa 6616 (Ukraine, Kharkov, IMI). To receive the vaccine, it is planned to develop a vaccine. From the surface of the medium in a Petri dish washings were made with a 0.9% sodium chloride solution, and the suspension as result of washing was washed out again three times and centrifuged.

(3) After repeated process of suspension, riboflavin (or riboflavin mononucleotide, riboflavin dinucleotide, methylene blue, toluidine blue, dimethylmethylene blue) was added to a final concentration of 5-640 nM, then left for 2-40 min, 1-1000 mmol/l of divalent metal salt solution was added (as salts of divalent metals, water-soluble salts can be used both separately and in mixtures with each other, inclusive, but not excluding: magnesium, calcium, zinc, iron, copper, strontium, cobalt, nickel) as an activator of nucleolysis. It was treated with electromagnetic radiation in the ultraviolet or visible region of the optical spectrum for 2-50 minutes at a power of 10-900 μV/ml, and then again seeded on MHA in order to control inactivation.

(4) Table 1 presents the results of the dependence of the inactivation efficiency on the inactivator and its dose when irradiated for 5 minutes with light with a wavelength of 320 nm and a power of 500 μV/ml for flavins and at 560 nm for phenothiazines and porphyrins.

(5) Table 2 shows the results of the dependence of the inactivation efficiency on the wavelength of electromagnetic radiation at an emitter power of 500 μV/ml, a processing time of 5 minutes, and a concentration of each photoinactivator of 40 μM/L using a white LED lamp and a prism to isolate the desired wavelengths.

(6) TABLE-US-00001 TABLE 1 The dependence of the effectiveness of inactivation of P. aeruginosa on the inactivator and its dose at an initial dose of 10 lg CFU/ml No. Concentration lg CFU/ p/p Photosensitizer nM/L ml after treatment  1. Riboflavin 1 6  2. 5 2  3. 10 1  4. 20 0  5. 40 0  6. 80 0  7. 160 0  8. 320 0  9. 640 0 10. 1280 -* 11. Riboflavin 1 4 12. mononucleotide 5 1 13. 10 0 14. 20 0 15. 40 0 16. 80 0 17. 160 0 18. 320 0 19. 640 0 20. 1280 -* 21. Riboflavin dinucleotide 1 3 22. 5 0 23. 10 0 24. 20 0 25. 40 0 26. 80 0 27. 160 0 28. 320 0 29. 640 0 30. 1280 -* 31. Methylene blue 1 6 32. 5 2 33. 10 1 34. 20 1 35. 40 0 36. 80 0 37. 160 0 38. 320 0 39. 640 0 40. 1280 2 41. Toluidine Blue 1 6 42. 5 2 43. 10 1 44. 20 1 45. 40 0 46. 80 0 47. 160 0 48. 320 0 49. 640 0 50. 1280 2 51. Dimethylmethylene 1 2 52. blue 5 1 53. 10 1 54. 20 1 55. 40 0 56. 80 0 57. 160 0 58. 320 0 59. 640 0 60. 1280 1 61. Chlorophyll alpha 1 2 62. (on TWEEN-80) 5 2 63. 10 1 64. 20 1 65. 40 0 66. 80 0 67. 160 0 68. 320 0 69. 640 0 70. 1280 -* 71. Heme 1 3 72. 5 2 73. 10 2 74. 20 1 75. 40 0 76. 80 0 77. 160 0 78. 320 0 79. 640 0 80. 1280 -* 81. Cyanocobalamin 1 6 82. 5 5 83. 10 4 84. 20 4 85. 40 4 86. 80 2 87. 160 3 88. 320 2 89. 640 0 90. 1280 -* *- not tested due to the inability to achieve the target concentration

(7) As can be seen from table 1, in the range of concentrations from 5 to 640 nM/L, most photoinactivators showed sufficient efficiency to inactivate Pseudomonas aeruginosa.

(8) The following microbial vaccine antigens can also be used as initial microbial phagolysates, microbial exotoxin, microbial endotoxin, acellular microbial antigens, microbial glycoprotein, microbial glycoprotein mixture, microbial peptide, microbial peptide mixture, microbial polysaccharide, microbial polysaccharide, microbial polysaccharide, lipopolysaccharides.

(9) Before or after photoinactivation, such antigen/toxin can be cut into fragments using proteases, including but not limited to trypsin, pepsin, proteinase-K, chymotrypsin, using synthetic proteases. As salts of divalent metals, water-soluble salts can be used both separately and in mixtures with each other, inclusive, but not excluding: magnesium, calcium, zinc, iron, copper, strontium, cobalt, nickel.

(10) Instead of the bacterial antigen/toxin from the variations described above, a whole virion, a viral protein, a mixture of viral proteins or pre-cut protease viral antigens can be used. Viruses: influenza, hepatitis, herpes viruses, measles, rubella, HIV/AIDS, animal viral infections: Newcastle disease, infectious bursal disease of the bird, classical swine fever, African swine fever and any other diseases can be used as initial antigens, multiple sclerosis therapy.

(11) Due to the partial modification of the structure during the modification reaction, a huge number of various vaccine antigen derivatives with different immunogenicity and structure are formed and, accordingly, the immune system induces the synthesis of more monoclones in response to these new antigenic determinants. In addition, such a variety of new epitopes (hundreds of thousands or even millions) allows us to predictively protect the body from future nonexistent strains of the flu and mutant HIV/AIDS viruses.

(12) TABLE-US-00002 TABLE 2 The dependence of the efficiency of inactivation of P. aeruginosa depending on the wavelength of electromagnetic radiation at an initial dose of 10 lg CFU/ml Wavelength lg CFU/ml after p/p Photosensitizer nm treatment  1. Riboflavin 180 0  2. 220 2  3. 260 1  4. 320 0  5. 360 0  6. 400 0  7. 440 0  8. 480 0  9. 520 9 10. 560 8 11. 600 9 12. 640 9 13. 680 7 14. 720 6 15. Methylene blue 180 10 16. 220 9 17. 260 8 18. 320 9 19. 360 9 20. 400 9 21. 440 9 22. 480 7 23. 520 4 24. 560 3 25. 600 3 26. 640 0 27. 680 0 28. 720 0 29. Chlorophyll alpha 180 9 30. (on TWEEN-80) 220 9 31. 260 10 32. 320 10 33. 360 10 34. 400 9 35. 440 9 36. 480 6 37. 520 7 38. 560 0 39. 600 0 40. 640 4 41. 680 6 42. 720 9

(13) Double Covalent Modification of the Particle Antigen to Increase Vaccine Immunogenicity

(14) According to the number of microbial bodies, the resulting suspension was containing 10 billion cells/ml or 10 lg CFU/ml; then 0.1 ml of the suspension was diluted 100 times with 0.9% sodium chloride solution and the surface protein concentration was determined using the Biuret method or in the complexation reaction with the bromphenol blue method of Flores or spectrophotometrically using the Kalkar formula.

(15) In terms of protein, a double covalent modification reaction was carried out by adding to the suspension of inactivated bacteria crushed to succinic and maleic anhydride powder in an amount of from 0.01 to 10% of the specified amount of protein. Instead of succinic and maleic anhydrides, other combinations of modifiers can be used including, but not limited to: anhydrides of carboxylic and polycarboxylic acids, halides of carboxylic and polycarboxylic acids. When using less than 0.01% degree of acylation, the immunogenicity of the vaccine does not differ from the immunogenicity of the unmodified antigen. When using degrees of modification of more than 10%, the immunogenicity of the vaccine drops to values less than that of the original unmodified antigen.

(16) As a result of the modification reaction, 8 samples with different degrees of acylation were obtained: 1%, 3%, 5%, 7%, 9%, 11%, 13%, 15%. Exceeding 15% completely deprives immunogenicity of modified antigens, therefore derivatives with degrees of modification greater than 15% were not considered advisable to receive and use in the future. Corpuscular antigen with varying degrees of modification was further used to establish its immunogenicity.

(17) The other part of the antigen was centrifuged for 40 minutes at 3 thousand rpm. The precipitate was discarded, and the supernatant was passed through a Sephadex G-75 column. The first, heaviest fraction was collected and used further to establish the protein concentration and degree of chemical modification. The resulting antigen was a homogeneous fraction (one polymer substance) and had a molecular weight of 1.5 mDa and a charge of −186000. Received a soluble glycoprotein antigen with such degrees of modification: 1%, 3%, 5%, 7%, 9%, 11%, 13%, 15%.

(18) Polysaccharide antigen was also obtained from inactivated bacterial corpuscles. A suspension of inactivated bacteria was boiled for 40 minutes, centrifuged for 30 minutes at 10 g, the supernatant with polysaccharides was separated. Polysaccharides were precipitated from the supernatant by adding twice the volume of ethanol. The polysaccharide precipitate was separated by centrifugation, then dried. Modification was carried out after the polysaccharides were dissolved in distilled water in terms of polysaccharides (the number of polysaccharides was determined gravimetrically) with the following degrees of modification: 1%, 3%, 5%, 7%, 9%, 11%, 13%, 15%. The amount of each modifier was added in ½ dose from the calculated in the same proportion.

(19) Antigens can be modified, but not limited to alkylation, acylation with modifiers such as carboxylic and polycarboxylic acid anhydrides, halogenated carboxylic and polycarboxylic acids, either individually or in a different combination or mixture.

(20) As an adjuvant, 0.02-15% iron hydroxide hydrosol of the vaccine volume was used.

(21) It is well known that when using gel filtration, the distribution of proteins passes over the size of the protein globule. Gel filtration was performed on columns filled with Sephadex G-75 gel. The total volume of the gel column was determined by Vt. During elution, large molecules that do not penetrate into the granules of the gel move with high speed together with the intergranular solvent and appear as a narrow strip. The volume of the eluent, which corresponds to the appearance of this zone, was determined as V0 (free volume).

(22) Smaller molecules passed the column slowly, penetrated into the granules of the gel, and their exit from the column was very long lasting. Due to the fact that the degree of diffusion into the granules of the gel depends on the size of the molecules, the substances are released from the column in order as size of molecular weight was decreasing. The molecular mass M of the experimental protein was determined by comparing the elution volume Ve with a similar parameter of marker proteins.

(23) A column with a diameter of 25 mm and a length of 1000 mm was used to isolate the antigen. Gel Sephadex G-75 and G-25 were preliminarily prepared in such a way: gel granules were slowly added to the buffer solution (0.1 M TRIS-HCl and 0.1 M NaCl, pH=8.0), kept in the thermostat for 72 hours at t=37 0 C. Then the gel was diaererised (gradually and carefully mixed in excess buffer solution to remove gas bubbles) on a shaker for an hour.

(24) Filter paper was placed at the bottom of the column A little buffer solution was slowly added to the column, then a small amount (5 g) of a suspension of swollen Sephadex G-25 gel pellets was transferred along the wall. After the gel column was formed, at least two volumes of the working buffer solution were passed through the column. Then, 100 μl of the sample solution was micropipeted. A constant elution rate was set due to the establishment of a dropper with a buffer solution over the column, and the elution rate was controlled by a roller. The eluate was collected in 0.5 ml tubes and analyzed on an SF-56 spectrophotometer at a wavelength of 280 nm.

(25) Anti-Pseudomonas serum for diagnostic purposes with a titer of specific anti-Pseudomonas antibodies (1:1000) was obtained according to the standard scheme for immunizing rabbits by introducing corpuscular inactivated antigen in Freund's adjuvant, according to the standard scheme 3; 5 and 7 days at a dose of 0.2 ml intramuscularly.

(26) For immunization of animals, modified samples of both corpuscular antigen (CA) and modified soluble glycoprotein antigen (GA), polysaccharide antigen (PA) were tested. Also, a phagolysate antigen was prepared similarly to a corpuscular antigen: for 3 hours, 0.1 ml of pyobacteriophage (Russia, Ufa) was added to a suspension of 10 lg CFU/ml. Furthermore, inactivation was performed by riboflavin under standard conditions specified in paragraphs. in the presence of divalent metal cations. Antigen inactivation. The inactivated corpuscular phagolysate antigen was also modified with two modifiers to form a covalently modified corpuscular phagolysate antigen.

(27) The level of antibodies was established by two methods: a hemagglutination reaction and a method of fluorescent antibodies. The three animals from each group were left alive for up to 15 days, then decapitated with chloroform and serum was obtained, where the level of specific antibodies was also established by the above methods.

(28) To implement this, a test system for the direct hemagglutination reaction was prepared, which was carried out in 96-well round-bottom immunological plates, to which 0.02 ml of a 0.1% suspension of thermostated ram red blood cells and 0.02 ml of a suspension of thermally inactivated Pseudomonas aeruginosa cells were added at a concentration 10 billion cells/ml. Antibody levels were determined by serial ten-fold (but two-fold) dilutions of the mice serum, which were added in an amount of 0.02 ml to the wells of the plates. The presence of agglutinates testified to the formation of immune complexes. As controls, we used normal human immunoglobulin (anti-Pseudomonas antibody titer ranged from 0 to (1:10) according to the AED) and the blood serum of unvaccinated mice (titer from 0 to 1:10).

(29) The obtained modified antigen can be sorbed by standard methods known to an ordinary person skilled in the art on an iron hydroxide hydrosol to further prolong the effects of the vaccine. A hydrosol is obtained by boiling a 0.1-20% solution of ferric chloride in water, followed by rapid cooling of the solution. Rapid cooling of the solution makes it possible to obtain nanosized nuclei of an iron hydrosol of hydroxide hydrochloride as colloidal particles. Such particles have the ability to significantly stimulate cellular immunity through siderophore receptors, as well as prolong the contact of vaccine antigens with plasma cells and other lymphocytes. Unlike the classic aluminum hydroxide adjuvant, the iron hydroxide hydrosol is completely metabolized and harmless to the human body.

(30) The results of the studies of the immunogunity of vaccine antigen samples using the example of Pseudomonas aeruginosa sorbed on nanoparticles of hydrosol of iron hydroxide hydrochloride are shown in Table 3.

(31) TABLE-US-00003 TABLE 3 The dependence of the immunogenicity of binary covalently modified antigens on the degree of modification using different antigens of Pseudomonas aeruginosa as an example The degree Induced titer of of mod- neutralizing antibodies p/p Antigen ification, % (1:X), X * 43. CA 1 520 44. 3 7000 45. 5 14000 46. 7 7000 47. 9 150 48. 11 75 49. 13 75 50. 15 25 51. GA 1 520 52. 3 14000 53. 5 14000 54. 7 14000 55. 9 150 56. 11 75 57. 13 75 58. 15 25 59. PA 1 20 60. 3 150 61. 5 150 62. 7 150 63. 9 150 64. 11 75 65. 13 75 66. 15 25 67. CF 1 520 68. 3 28000 69. 5 28000 70. 7 14000 71. 9 5000 72. 11 2500 73. 13 1250 74. 15 520 P < 0.05; * - differences from control are statistically significant

(32) As per table 3, the largest titers of antibodies induced by phagolysate-corpuscular covalently modified antigen. At degrees of modification from 3 to 7, the titer exceeded the original native (1:20 for unmodified antigens except the polysaccharide, for which the titer was 1:10). Therefore, the advantage of our invention is that the bivalent modification after inactivation by the photodynamic method allows to increase the immunogenicity of antigens by several orders of magnitude based on the neutralization of unmodified corpuscles. In the prototype, it was possible to increase the immunogenicity of the antigen only to a titer of 1:5000.

(33) Determination of Reactogenicity and Allergenicity of Vaccines

(34) Studies of the reactogenicity and allergenicity of the solution of each of the vaccine antigens were carried out on healthy guinea pigs weighing 300-400 g of 3 animals in each the control and experimental groups. In experimental animals, fur was depilated on the sides. To determine the reactogenicity, a solution of the corresponding antigen was injected intracutaneously on one side of the body in a volume of 0.2 ml.

(35) To determine allergenicity, test animals were injected intracutaneously with a triple vaccine antigen in a volume of 0.2 ml with an interval of 14 days, and 14 days after the last injection, guinea pigs were injected with a subcutaneous vaccine antigen in a volume of 0.2 ml.

(36) The animals of the control group were injected with saline. The place of administration of the vaccine antigen was monitored for the occurrence of local reactions in the first 5 minutes and every 2 hours for 24 hours. Redness of the skin at the injection site in the area of not more than 5 mm is allowed.

(37) As a result of the studies, it was found that none of the modified antigens with degrees of modification from 3 to 15% showed reactogenicity and allergenicity. Among the unmodified antigens, the glycoprotein soluble antigen showed reactogenicity, and the phagolysate unmodified antigen showed allergen after repeated administrations.

Example 2—the Obtaining Vaccine Based on Viral Virion of Newcastle

(38) Newcastle Disease Virus Inactivation

(39) The fluid culture containing 10 lg TCA50/ml of Newcastle disease virus (strain 2M—Kiev) obtained by well-known specialists in this field by the standard method of cultivating the virus on chicken embryos, add riboflavin (or riboflavin mononucleotide, riboflavin dinucleotide, methylene blue, toluidine blue, dimethylmethylene blue) to a final concentration of 5-640 nM, left for 2-40 minutes, 1-1000 mM/l solution of a divalent metal salt was added (as salts of divalent metals they can be used as In just the same way, in a mixture with each other, water-soluble salts, inclusive, but not excluding: magnesium, calcium, zinc, iron, copper, strontium, cobalt, nickel) as a nucleolysis activator, were treated with electromagnetic radiation in the optical spectral region 180-700 nm for 2-50 minutes at a power of 10-900 μV/ml, and then introduced into the chicken fibroblast culture to control inactivation according to the degree of culture degradation—cytopathic effect.

(40) Table 4 presents the results of the dependence of the inactivation efficiency on the inactivator and its dose when irradiated for 5 minutes with light with a wavelength of 320 nm and a power of 500 μV/ml for flavins and at 560 nm for phenothiazines and porphyrins.

(41) Table 4 shows the results of the dependence of the inactivation efficiency on the wavelength of electromagnetic radiation at an emitter power of 500 μV/ml, a processing time of 5 minutes, and a concentration of each photoinactivator of 40 μM/L using a white LED lamp and a prism to isolate the desired wavelengths.

(42) TABLE-US-00004 TABLE 4 The dependence of the effectiveness of the inactivation of the Newcastle disease virus with an initial dose of 10 lg TCA50/ml Concentration lg TCA50/ml p/p Photosensitizer nM/L after treatment  91. Riboflavin 1 7  92. 5 1  93. 10 0  94. 20 0  95. 40 0  96. 80 0  97. 160 0  98. 320 0  99. 640 0 100  1280 -* 101  Riboflavin 1 3 102  mononucleotide 5 0 103  10 0 104  20 0 105  40 0 106  80 0 107  160 0 108  320 0 109  640 0 110  1280 -* 111  Riboflavin dinucleotide 1 4 112  5 1 113  10 0 114  20 0 115  40 0 116  80 0 117  160 0 118  320 0 119  640 0 120  1280 -* 121  Methylene blue 1 7 122  5 3 123  10 1 124  20 0 125  40 0 126  80 0 127  160 0 128  320 0 129  640 0 130  1280 2 131  Toluidine Blue 1 8 132  5 3 133  10 1 134  20 0 135  40 0 136  80 0 137  160 0 138  320 0 139  640 0 140  1280 0 141  Dimethylmethylene blue 1 3 142  5 1 143  10 0 144  20 0 145  40 0 146  80 0 147  160 0 148  320 0 149  640 0 150  1280 0 151  Chlorophyll alpha 1 5 152  (on TWEEN-80) 5 3 153  10 1 154  20 0 155  40 0 156  80 0 157  160 0 158  320 0 159  640 0 160  1280 -* 161  Heme 1 4 162  5 1 163  10 1 164  20 0 165  40 0 166  80 0 167  160 0 168  320 0 169  640 0 170  1280 -* 171  Cyanocobalamin 1 7 172  5 6 173  10 5 174  20 4 175  40 4 176  80 2 177  160 1 178  320 1 179  640 0 180  1280 -* *- not tested due to the inability to achieve the target concentration

(43) As per table 4, in the range of concentrations from 5 to 640 nM/L, most photoinactivators showed sufficient effectiveness to inactivate the Newcastle disease virus.

(44) Then, covalent modification of the viral antigen was carried out with two to five modifiers in terms of protein, as shown in Example 1. A detailed description of the modification is given below.

(45) As the initial viral vaccine antigens also can be used: viral capsid proteins, agglutinins. Before or after photoinactivation, such a viral antigen can be cut into fragments using proteases, including but not limited to trypsin, pepsin, proteinase-K, chymotrypsin, using synthetic proteases. As salts of divalent metals, water-soluble salts can be used both separately and in mixtures with each other, inclusive, but not excluding: magnesium, calcium, zinc, iron, copper, strontium, cobalt, nickel.

(46) Instead of the whole virion, the following can be used: a viral protein, a mixture of viral proteins or viral antigens previously cut with proteases. The initial antigens can be viruses: influenza, hepatitis, herpes viruses, measles, rubella, HIV/AIDS, animal viral infections: Newcastle disease, infectious bursal disease of the bird, classical swine fever, African swine fever and any other diseases, therapy of multiple sclerosis (Table 5).

(47) TABLE-US-00005 TABLE 5 Promising products and diseases from which we will be able to be protected: Ap- A pathology where plication vaccination will be p/p area much more effective New consumer qualities  1. Vet- African swine fever An increase to 99% of the erinary degree of protection of the science livestock from one or two  2. Auesqui's disease vaccinations, a decrease in  3. Newcastle Disease the death of animals during  4. Rabbit Hemorrhagic the vaccination process (live Fever attenuated virus strains from  5. Dog/cat distemper vaccines still kill up to 10%  6. Horse Encephalitis of the livestock).  7. Bird infectious Reducing the effect of the laryngotracheitis fall in the planned weight  8. Rabies gain of animals during  9. Pasteurellosis vaccination (during the 10. RSV virus propagation of vaccine 11. Parainfluenza type 3 strains, the animal becomes 12. Infectious bursal disease sick and refuses food. This is 13. Bovine Infectious very important when growing Rhinotracheitis broilers). Real protection 14. Foot and mouth disease against especially dangerous 15. Adenoviruses infections (Africans, 16. Dog enteritis virus Aujeszky, bird flu, dog and 17. Coronavirus cat distemper), where 18. Ornithosis vaccination efficiency is 19. Salmonellosis close to 40%, and in other 20. Cattle Nodular animals the disease is weaker Dermatitis and a small part of them 21. Smallpox of survives, while almost all of sheep and goats unvaccinated animals die). 22. Bird flu 23. Anthrax 24. Med- Herpes viruses of Increasing the effectiveness icine 1-2 types of both as a treatment and also prevention of herpes 25. Herpes Zoster Prevention of severe complications associated with the use of a live vaccine. 26. Epstein-Barr virus There are no vaccines, it can be effective both in the prevention of mononucleosis and in the treatment of complications of this viral infection (atherosclerosis and cancer) 27. Cytomegalovirus No vaccines can be effective both in the prevention and in the complications of this viral infection (atherosclerosis and cancer) 28. Herpes virus type 6 No vaccines, offered first time 29. Measles Offered safe and effective 30. Rubella replacement for live highly 31. Polio reactogenic vaccines.

(48) Due to the partial modification of the antigen structure during the modification reaction, a huge number of various vaccine antigen derivatives with different immunogenicity and structure are formed, and accordingly, the immune system induces the synthesis of more monoclones in response to these new antigenic determinants. In addition, such a variety of new epitopes (hundreds of thousands or even millions) allows us to predictively protect the body from future nonexistent strains of the flu and mutant HIV/AIDS viruses.

(49) TABLE-US-00006 TABLE 6 The dependence of the effectiveness of the inactivation of the Newcastle disease virus. All depends on the wavelength of electromagnetic radiation at an initial dose of 10 lg CFU/ml Wavelength lg TCD50/ p/p Photosensitizer nm ml after treatment  75. Riboflavin 180 0  76. 220 1  77. 260 1  78. 320 0  79. 360 0  80. 400 0  81. 440 0  82. 480 0  83. 520 9  84. 560 9  85. 600 9  86. 640 9  87. 680 7  88. 720 6  89. Methylene blue 180 10  90. 220 10  91. 260 9  92. 320 9  93. 360 9  94. 400 9  95. 440 8  96. 480 7  97. 520 4  98. 560 3  99. 600 2 100  640 0 101  680 0 102  720 0 103  Chlorophyll alpha 180 8 104  (on TWEEN-80) 220 9 105  260 10 106  320 10 107  360 10 108  400 9 109  440 9 110  480 6 111  520 7 112  560 0 113  600 0 114  640 4 115  680 5 116  720 9

(50) As on table 6, the highest inactivation efficiency for derivatives of flavins (riboflavin) is observed in the ultraviolet region of the spectrum (180-390 nm), for phenothiazines and porphyrins in the red region of the visible spectrum (500-700 nm)

(51) Double Covalent Modification of Viral Antigen to Increase Vaccine Immunogenicity.

(52) According to the number of virions, the viral suspension responded to 10 lg TCD50/ml; then 0.1 ml of the suspension was diluted 100 times with 0.9% sodium chloride solution and the concentration of surface proteins was established using the Biuret method and in the complexation reaction with the bromophenol blue method of Flores.

(53) In terms of protein, a double covalent modification reaction was carried out by adding to the suspension inactivated virions, crushed to succinic and maleic anhydride powder in an amount of 0.1 to 10% of the specified amount of protein. Instead of succinic and maleic anhydrides, other combinations of modifiers can be used including, but not limited to: anhydrides of carboxylic and polycarboxylic acids, halides of carboxylic and polycarboxylic acids.

(54) As a result of the modification reaction, 8 samples with different degrees of acylation were obtained: 1%, 3%, 5%, 7%, 9%, 11%, 13%, 15%. Exceeding 15% completely deprives immunogenicity of modified antigens, therefore derivatives with degrees of modification greater than 15% were not considered advisable to receive and use in the future. Viral antigen (virion) with varying degrees of modification was further used to establish its immunogenicity. A soluble peptide viral antigen was also obtained by trypsinization of the virion and isolation of a protein fraction with a molecular weight of about 18 kDa (NewcastleCastle virion surface receptor proteins) by gel filtration, and then derivatives with such degrees of modification were obtained: 1%, 3%, 5%, 7%, 9%, 11%, 13%, 15%.

(55) Virus antigens can be modified, but not limited to alkylation, acylation with modifiers such as carboxylic and polycarboxylic acid anhydrides, halogenated carboxylic and polycarboxylic acids, either individually or in a different combination or mixture.

(56) Inactivated and modified samples were taken for immunization of animals: virion antigen (VA) and surface virion antigen (SA).

(57) The level of antibodies was established by two methods: a hemaglutination reaction and a method of fluorescent antibodies. Three animals from each group were left alive for up to 15 days, decapitated with chloroform and serum was obtained, where the level of specific antibodies was also established by the above methods. To implement this, a test system for the direct hemagglutination reaction was prepared, which was carried out in 96-well round-bottom immunological plates, to which 0.02 ml of a 0.1% suspension of thermostated ram erythrocytes and 0.02 ml of a suspension of thermally inactivated Newcastle disease virions were added at a concentration of 10 lg TCD50/ml.

(58) Antibody levels were determined by serial ten-fold (but two-fold) dilutions of the blood sera of mice, which were added in an amount of 0.02 ml to the wells of the plates. The presence of agglutinates testified to the formation of immune complexes. As controls, we used normal human immunoglobulin (the antiviral antibody titer ranged from 0 to (1:10) according to the Analytic Normative Documentation) and the blood serum of unvaccinated mice (titer from 0 to 1:10).

(59) The results of studies of samples of vaccine antigens on the example of the virions of the Newcastle disease virus are shown in table 7.

(60) TABLE-US-00007 TABLE 7 Dependence of the immunogenicity of binary covalently modified antigens of the Newcastle disease virus from the degree of modification using whole virions and a single surface protein as an example. The degree Induced titer of of mod- neutralizing antibodies p/p Antigen ification, % (1:X), X *  1. VA 0 10  2. 1 100  3. 3 5000  4. 5 10000  5. 7 5000  6. 9 2500  7. 11 75  8. 13 75  9. 15 25 10. SA 0 10 11. 1 50 12. 3 100 13. 5 10000 14. 7 100 15. 9 50 16. 11 25 17. 13 25 18. 15 — P < 0.05; * - differences from control are statistically significant

(61) As can be seen from table 7, the highest antibody titers are induced by a virion covalently modified antigen. At degrees of modification from 3 to 7, the titer exceeded the original native (1:10) for unmodified antigens. The degree of protection of a single surface virion antigen was lower than for the whole virion, but it was 2 orders of magnitude higher than the protective level (1:10 for unmodified viral antigens).

(62) Therefore, the bivalent modification after inactivation by the photodynamic method allows to increase the immunogenicity of antigens by several orders of magnitude based on the neutralization of unmodified corpuscles. In the prototype, it was possible to increase the immunogenicity of the antigen only to a titer of 1:5000. The obtained modified antigen can be sorbed by standard methods known to an ordinary person skilled in the art on an iron hydroxide hydrosol to further prolong the effects of the vaccine.

(63) Determination of Reactogenicity and Allergenicity of Vaccines Based on Antigens of the Newcastle Disease Virus.

(64) The studies on the reactogenicity and allergenicity of the solution of each of the vaccine antigens were carried out on healthy guinea pigs weighing 300-400 g of 3 animals in the control and experimental groups. In experimental animals, fur was depilated on the sides. To determine the reactogenicity, a solution of the corresponding antigen was injected intracutaneously on one side of the body in a volume of 0.2 ml. To determine allergenicity, test animals were injected intracutaneously with a triple vaccine antigen in a volume of 0.2 ml with an interval of 14 days, and 14 days after the last injection, guinea pigs were injected with a subcutaneous vaccine antigen in a volume of 0.2 ml.

(65) The animals of the control group were injected with saline. The place of administration of the vaccine antigen was monitored for the occurrence of local reactions in the first 5 minutes and every 2 hours for 24 hours. Redness of the skin at the injection site in the area of not more than 5 mm is allowed. As a result of the studies, it was found that none of the photoinactivated bivalently modified viral antigens with degrees of modification from 3 to 15% showed reactogenicity and allergenicity. Among unmodified virus antigens, similar antigens also did not show allergenicity after repeated injections.

(66) The Main Advantages of the Vaccines that we Offer are:

(67) 1. An increase in immunogenicity by 3 orders of magnitude compared to existing vaccines

(68) 2. Extension of the spectrum of action on low-immunogenic or non-immunogenic antigens (herpes viruses, human encephalitis viruses, RSV—virus, rotaviruses, coronaviruses, paramyxoviruses, Mycobacterium tuberculosis, african swine fever virus, Auezky disease, classical swine fever)

(69) 3. A decrease of 2-3 orders of allergenicity and reactogenicity of vaccines by reducing the effective vaccinating dose of antigen in the vaccine with the same effectiveness and immunogenicity.

(70) 4. Cheaper vaccine production technology by reducing the number of stages of production associated with current vaccine need to clean from formalin residues and the need to add special adjuvants (substances that increase the overall immunogenicity of vaccines such as aluminum hydroxide).

(71) 5. Extension of vaccination efficiency to prospective (not yet existing) antigens of influenza and other viral infections with a highly variable genome and antigenicity due to an increase in the number of available epitopes of antigens. This will protect not only from one strain of influenza, but also from non-existing, upcoming variants of the virus strains.

(72) 6. The ability to obtain ultra-polyvalent vaccines containing 20 or more different antigens in a mixture with the same effectiveness as a single vaccine.

(73) 7. The possibility of replacing ALL vaccines based on live attenuated microorganisms and viruses with inactivated and low reactivity, but with the same effectiveness and immunogenicity.

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