Abstract:
The invention provides methods of preparing aglycosylated antibodies, for instance aglycosylated antibodies with altered or restored effector functions, as well as antibodies prepared by these methods.
Abstract:
The present invention relates to anti-SIP agents, for example, humanized monoclonal antibodies, and their uses for detection of SIP or for treatment of diseases and conditions associated with SIP.
Abstract:
Compositions and methods for producing monoclonal antibodies and their derivatives reactive against bioactive lipid targets are described. These compositions include derivatized lipids, each of which comprises a bioactive lipid that having a polar head group and at least one hydrocarbon chain (e.g., a lysolipid such as lysophosphatidic acid or sphingosine-1 -phosphate) in which a carbon atom has been derivatized with a pendant reactive group; immunogens made by linking a derivatized lipid to a carrier moiety (e.g., a carrier protein, polyethylene glycol, colloidal gold, alginate, or a silicone bead); monoclonal antibodies and derivatives produced by immunizing an animal with such an immunogen; and therapeutic and diagnostic compositions containing such antibodies and antibody derivatives. Methods for making such derivatized lipids, immunogens, and monoclonal antibodies and derivatives, methods for detecting such antibodies once generated, and therapeutic and diagnostic methods for using such antibodies and derivatives, are also described.
Abstract:
The invention provides antibodies with superior therapeutic efficacy and related methods of engineering such antibodies to increase their stability and resistance to proteases, e.g., in the digestive tract. Protease cleavage motifs are identified and subsequently modified to reduce or eliminate cleavage at that site. Methods of employing these orally deliverable antibodies as therapeutic compositions, particularly against gastrointestinal pathogens are also provided herein. In one aspect, the invention provides combinations of monoclonal antibodies, e.g., "synthetic polyclonals", that work synergistically to neutralize bacterial toxins, particularly enteric bacterial toxins such as Clostridium difficile toxin A.
Abstract:
The invention provides antibody to canine or feline or equine antigens. Specifically, antibodies directed to canine CD20 which have been caninized or felinized are provided. Also provided are methods for preparing high affinity antibodies to canine and feline CD20 as well as methods for treating B cell disorders in companion animals.
Abstract:
The invention provides recombinant protein (e.g., a recombinant antibody or soluble receptor) having (i) a binding domain capable of specific binding to an epitope (for example an antibody variable domains, a receptor, a growth factor, a cytokine, or a fragment of any of the foregoing which is capable of specifically binding the desired epitope) and (ii) an effector domain comprising a constant domain region which is derived from immunoglobulin of a first species which is a companion mammal, e.g. dog, cat, or horse, having engineered substitutions at one or more positions and having an altered interaction with one or more FcRs or other ligands, and optionally enhanced effector function, relative to the parent constant domain region.
Abstract:
Compositions and methods for producing monoclonal antibodies and their derivatives reactive against bioactive lipid targets are described. These compositions include derivatized lipids, each of which comprises a bioactive lipid that having a polar head group and at least one hydrocarbon chain (e.g., a lysolipid such as lysophosphatidic acid or sphingosine-1 -phosphate) in which a carbon atom has been derivatized with a pendant reactive group; immunogens made by linking a derivatized lipid to a carrier moiety (e.g., a carrier protein, polyethylene glycol, colloidal gold, alginate, or a silicone bead); monoclonal antibodies and derivatives produced by immunizing an animal with such an immunogen; and therapeutic and diagnostic compositions containing such antibodies and antibody derivatives. Methods for making such derivatized lipids, immunogens, and monoclonal antibodies and derivatives, methods for detecting such antibodies once generated, and therapeutic and diagnostic methods for using such antibodies and derivatives, are also described.
Abstract:
Compositions and methods for producing monoclonal antibodies and their derivatives reactive against bioactive lipid targets are described. These compositions include derivatized lipids, each of which comprises a bioactive lipid that having a polar head group and at least one hydrocarbon chain (e.g., a lysolipid such as lysophosphatidic acid or sphingosine-1 -phosphate) in which a carbon atom has been derivatized with a pendant reactive group; immunogens made by linking a derivatized lipid to a carrier moiety (e.g., a carrier protein, polyethylene glycol, colloidal gold, alginate, or a silicone bead); monoclonal antibodies and derivatives produced by immunizing an animal with such an immunogen; and therapeutic and diagnostic compositions containing such antibodies and antibody derivatives. Methods for making such derivatized lipids, immunogens, and monoclonal antibodies and derivatives, methods for detecting such antibodies once generated, and therapeutic and diagnostic methods for using such antibodies and derivatives, are also described.
Abstract:
The present invention relates to compositions for inducing immune responses, including an antigen and a promiscuous T-cell epitope. Also provided are methods of inducing immune responses in hosts, comprising administering compositions comprising antigens and promiscuous T-cell epitopes to the host.
Abstract:
The invention provides methods of ameliorating or preventing toxicity associated with a virulence factor or toxin (e.g., a microbial virulence factor, e.g., from Clostridium ) in a subject, comprising administering to the subject in need thereof, a therapeutically effective amount of polypeptide having a protease activity, e.g., an isolated, recombinant or synthetic protease or antibody having protease activity, wherein the polypeptide (e.g., protease) partially or completely neutralizes the virulence factor or a toxin, thereby ameliorating or preventing the toxicity associated with the virulence factor or toxin.