The present invention relates to tick polypeptides and compositions comprising the same, which are useful for treatment or prophylaxis of tick infestation in a subject.

The invention is directed to modified Coversin polypeptides which exhibit leukotriene or hydroxyeicosanoid binding activity and reduced or absent C5 binding relative to the unmodified Coversin polypeptide; to nucleic acid molecules encoding said modified Coversin polypeptides; vectors and host cells comprising said nucleic acid molecules; and methods of treating or preventing diseases or conditions mediated by a leukotriene or hydroxyeicosanoid in a subject comprising administering said modified polypeptides or nucleic acids to a subject.

The described invention relates to tick chemokine binding polypeptides (tick CKBPs, typically tick Evasins) including hybrid CKBPs based on sequences from two or more tick CKBPs, and the uses of such polypeptides in inhibition of chemokines or detection of chemokine expression and inflammation.

A novel method of using an aquaporin protein from Rhipicephalus microplus (RmAQP2), fragments of RmAQP2, and/or the cDNA encoding RmAQP2 and/or the fragments are described. Immunogenic composition containing recombinant RmAQP2 and/or fragments of RmAQP2 are produced and administered to an ungulate which generates an immune response to RmAQP2. After feeding female ticks on the ungulate injected with RmAQP2 and/or fragments of RmAQP2, the female ticks have lower reproductive viability because of a reduced egg mass, reduced hatching percentage, and reduced survival of larvae. Thus, administering RmAQP2 and/or RmAQP2 fragments to an ungulate can reduce the incidence of R. microplus and also reduce the incidence of tick-borne pathogens in ungulates because of the lower number of R. microplus.

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.

The described invention relates to tick chemokine binding polypeptides (tick CKBPs, typically tick Evasins) including hybrid CKBPs based on sequences from two or more tick CKBPs, and the uses of such polypeptides in inhibition of chemokines or detection of chemokine expression and inflammation.

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.

Disclosed is a fusion protein including an Ixodes ricinus salivary gland polypeptide. In particular, it relates to a fusion protein including at least one Ixodes ricinus salivary gland polypeptide, at least one serum albumin polypeptide and at least one linker peptide. Also disclosed is the use of such a fusion protein for preventing or treating thrombus formation and/or thrombus growth, as well as pharmaceutical compositions, medicaments and methods including such a fusion protein.

Disclosed is a fusion protein including an Ixodes ricinus salivary gland polypeptide. In particular, it relates to a fusion protein including at least one Ixodes ricinus salivary gland polypeptide, at least one serum albumin polypeptide and at least one linker peptide. Also disclosed is the use of such a fusion protein for preventing or treating thrombus formation and/or thrombus growth, as well as pharmaceutical compositions, medicaments and methods including such a fusion protein.