Neoglycoconjugates as immunogens and therapeutic/diagnostic tools are described herein. The neoglycoconjugates are produced by conjugating a carbohydrate antigen intermediate to a free amine group of a carrier material (e.g., carrier protein). The intermediate comprises a linker having a first end and a second end, the first end being conjugated to a carbohydrate antigen via a thio ether bond and the second end comprising a functional group reactable with a free amine group. Following coupling, the carbohydrate antigen becomes covalently bound to the carrier material via an amide, a carbamate, a sulfonamide, a urea, or a thiourea bond, thereby producing the neoglycoconjugate. Applications of the neoglycoconjugates as antigens, immunogens, vaccines, and in diagnostics are also described. Specifically, the use of (neo)glycoconjugates as vaccine candidates and other therapeutic tools against cancers, viruses such as SARS-CoV-2, and other diseases characterized by expression of aberrant glycosylation are also described.

An object is to provide a test method for pancreatic cancer, and further to provide a test method for pancreatic cancer capable of detecting pancreatic cancer even at earlier stages. The objects are solved by a method for examining the likelihood of having pancreatic cancer, the method including (1) measuring the amount of at least one anti-carbohydrate antibody selected from the group consisting of anti-3-sialyllactose carbohydrate antibody and anti-(LN)3 carbohydrate antibody in a biological sample obtained from a subject, wherein the anti-3-sialyllactose carbohydrate antibody is an antibody capable of binding to a carbohydrate represented by Neu5Ac? (2.fwdarw.3) Gal? (1.fwdarw.4) Glc or an antibody recognizing the carbohydrate, and wherein the anti-(LN)3 carbohydrate antibody is an antibody capable of binding to a carbohydrate represented by Gal?1.fwdarw.3GlcNAc?1.fwdarw.3Gal?1.fwdarw.4GlcNAc or an antibody recognizing the carbohydrate.

The present description relates to glycoconjugates, glycoconjugate immunogens and glycoconjugate vaccines comprising carbohydrate antigens coupled to immunogenic carrier proteins, or materials used for detection and screening of resulting antibodies. Improved methods of more directly and precisely conjugating carbohydrate antigens to free thiol groups of immunogenic carrier proteins are described, including click-chemistry approaches based on photocatalytic thiol-ene reactions.

Described herein are compounds for use in vaccine compositions which contain natural or synthetic carbohydrate antigens. Such vaccines may be highly immunologically active due to the conjugation with an immune-stimulating protein or with a monophosphorylated lipid A derivative, and may be self-adjuvanting due to the presence of a monophosphorylated lipid A derivative. Treatments for cancer and fungal and bacterial infections are described herein.

Compositions useful to induce anti-TACA immune response and kits comprising the same and methods of using the compositions to treat and prevent cancer are disclosed. Isolated human antibodies which bind to a carbohydrate mimetic peptide and methods of making the same and using the same to treat and prevent cancer are disclosed. Isolated human NK cells useful to kill tumor cells, and isolated human dendritic cells, and methods of making the same and using the same to treat and prevent cancer are disclosed.

The present disclosure is directed to vaccines, antibodies, and/or immunogenic conjugate compositions targeting the SSEA3/SSEA4/GloboH associated epitopes (natural and modified) which elicit antibodies and/or binding fragment production useful for modulating the globo-series glycosphingolipid synthesis. The present disclosure relates to methods and compositions which can modulate the globo-series glycosphingolipid synthesis. Particularly, the present disclosure is directed to glycoenzyme inhibitor compound and compositions and methods of use thereof that can modulate the synthesis of globo-series glycosphingolipid SSEA3/SSEA4/GloboH in the biosynthetic pathway; particularly, the glycoenzyme inhibitors target the alpha-4GalT; beta-4GalNAcT-I; or beta-3GalT-V enzymes in the globo-series synthetic pathway. Moreover, the present disclosure is also directed to the method of using the compositions described herein for the treatment or detection of hyperproliferative diseases and/or conditions.

The present invention provides an immunity inducer and an immunity inducing method using same. The immunity inducer has an immunopotentiation effect on any target oligosaccharide antigen, in particular oligosaccharide antigens included in mammal-derived glycoprotein N-linked sugar chains; is capable of providing a monoclonal antibody having high specificity to and affinity with target oligosaccharide antigens; and has as an effective component thereof a glycolipid including a target oligosaccharide antigen (R) and indicated by general formula (2), or a salt thereof. General formula (2): RZYCH(NHCO(CH.sub.2).sub.n1CH.sub.3)CH.sub.2).sub.n2CH.sub.3 (in the formula, R indicates a straight-chain or branched oligosaccharide comprising 2-30 of at least one type of monosaccharide. Z indicates a single bond, O, S or NH, a linker bound to thiomethyl, amino methylated sugar alcohol. Y indicates (CH.sub.2).sub.m. n1 indicates an integer of 2-40, n2 indicates an integer of 1-27, and m indicates an integer of 1-30).

Neoglycoconjugates as immunogens and therapeutic/diagnostic tools are described herein. The neoglycoconjugates are produced by conjugating a carbohydrate antigen intermediate to a free amine group of a carrier material (e.g., carrier protein). The intermediate comprises a linker having a first end and a second end, the first end being conjugated to a carbohydrate antigen via a thio ether bond and the second end comprising a functional group reactable with a free amine group. Following coupling, the carbohydrate antigen becomes covalently bound to the carrier material via an amide, a carbamate, a sulfonamide, a urea, or a thiourea bond, thereby producing the neoglycoconjugate. Applications of the neoglycoconjugates as antigens, immunogens, vaccines, and in diagnostics are also described. Specifically, the use of (neo)glycoconjugates as vaccine candidates and other therapeutic tools against cancers, viruses such as SARS-CoV-2, and other diseases characterized by expression of aberrant glycosylation are also described.

The present invention provides an anti-placenta chondroitin sulfate (pl-CS) chimeric antigen receptor and application thereof. The chimeric antigen receptor mainly comprises anti-pl-CS antigen recognition region, a hinge region, a transmembrane region and intracellular region, wherein the anti-pl-CS antigen recognition region is any one of a plasmodium protein VAR2CSA, a part of peptide segment of plasmodium protein VAR2CSA or a pl-CS antibody; and the part of peptide segment of the plasmodium protein VAR2CSA is a peptide segment with the number of amino acid greater than 500 in the plasmodium protein VAR2CSA.

Compositions useful to induce anti-TACA immune response and kits comprising the same and methods of using the compositions to treat and prevent cancer are disclosed. Isolated human antibodies which bind to a carbohydrate mimetic peptide and methods of making the same and using the same to treat and prevent cancer are disclosed. Isolated human NK cells useful to kill tumor cells, and isolated human dendritic cells, and methods of making the same and using the same to treat and prevent cancer are disclosed.