The present invention relates to the field of biotechnology and genetic engineering, and particularly to the expression of recombinant peptides. The inoculation thereof in cattle results in the production of an immune response capable of adversely affecting Rhipicephalus microplus ticks, which feed on the inoculated cattle, decreasing the number and reproductive capacity of this tick species. Such recombinant immunogen can be used as an effective vaccine for tick control. The technical goal is the design and construction of two synthetic genes made with preferred codons for Pichia pastoris and expression thereof from a recombinant peptide, which consists in a continuous sequence and of a recombinant peptide, respectively, and the drug composition based of said recombinant polypeptide.

The present invention relates to immunogenic polypeptides, immunogenic fragments thereof and compositions comprising same, for use in eliciting an immune response in a subject to a tick. The invention also provides for methods of using said compositions and polypeptides.

Provided is an immunogenic composition comprising an antigenic peptide capable of inducing production of a neutralizing antibody against S100A9 and a carrier protein. The immunogenic composition can be used as a highly safe antithrombotic vaccine having antithrombotic effect without a long-term bleeding risk and is useful for the prevention of a disease associated with thrombus formation in which platelet aggregation is involved, particularly for the prevention of recurrent ischemic stroke.

The present invention is related to the recombinant production of proteins by using a synthetic gene for high protein expression in Pichia pastoris. More specifically, the invention describes the production of Sm14 Schistosoma mansoni recombinant protein, where a synthetic gene was created to promote high expression of such protein, a gene which was cloned under control of two types of Pichia pastoris promoters: methanol-inducible promoter (AOXI) and constituent promoter (GAP). With these constructions, Pichia pastoris strains were genetically manipulated to efficiently produce vaccine antigen Sm14. The processes to produce and purify this protein from P. pastoris cells, which can be escalated for their industrial production, were also improved.

Provided herein are compositions and methods for reducing bacterial contamination during cell culture. Such compositions and methods utilize engineered peptides or recombinant cells capable of secreting such peptides into culture medium. Also provided are methods of using the engineered peptides for inhibiting bacterial growth during culturing of cells.

The present invention encompasses a vaccine composition and method of use for treating heartworm infestation in mammals. The vaccine composition includes chimeric antigens engineered and manufactured using the genetic code (i.e., the amino acid or protein sequence) of the target sequence. After introduction of the vaccine composition containing the target antigen into the host (e.g., a canine), the host will generate antibodies as part of its robust immune response to the antigen. As the antibodies circulate through the host's plasma, heartworm larvae will consume the antibodies as they feed on the plasma. The antibodies will then act on internal targets of the worm recognized as antigens.

The present invention is a multivalent immunogenic composition for immunizing an animal against filariasis. In some aspects, the antigens of the multivalent immunogenic composition are protein-based, DNA-based, or a combination thereof. This invention also provides a method and kit for detecting a filarial nematode and determining vaccine efficacy.

The invention relates to antigenic polypeptides derived from a naturally occurring R. microplus protein, and nucleic acids encoding such polypeptides. The polypeptides elicit an immune response which, in turn, produces detrimental effects in R. microplus feeding on vaccinated cattle. Thus, the present disclosure provides novel vaccines to protect cattle from R. microplus infestation.

The present invention provides a functionalized mRNA including mRNA and double-stranded RNA including at least one RNA oligomer hybridized with mRNA. Functionalized mRNA is provided according to this configuration.

The present disclosure is directed to an immunogenic composition including: at least one or at least two isolated polypeptides or immunogenic fragments thereof, and optionally a pharmaceutically acceptable carrier, wherein each polypeptide is expressed on a luminal surface of an intestine of a filarial worm, wherein each polypeptide is expressed at a level at least two-fold higher in the intestine in comparison to the level of expression of each polypeptide in a reproductive tract or a body wall of the filarial worm, wherein each isolated polypeptide has at least one transmembrane domain, and wherein each polypeptide is a non-mitochondrial polypeptide. Also provided herein is a method for preventing or treating a filarial disease.