Abstract:
Neutralizing antibodies through recombinant protein expression were identified by mining antibody repertoires by high-throughput second generation sequencing. Sequencing across the majority of light and heavy chain variable regions of chicken immunoglobulins was performed at two immunological time points: a non-immune (naive) state and a post-hyperimmunization state. The mRNA was extracted from unsorted and unselected PBMC populations and identification of antigen-specific antibody sequences leveraged the significant disparity of abundance of an individual B cell clone in non-immune and immunized states. Through bioinformatic analysis, candidate amino acid sequences for variable heavy chain and light chains were identified. Recombinant polypeptides with the binding domains having the identified amino acid sequences for variable heavy chain and light chains were expressed and screened using immunoassays to confirm antigen-specificity.
Abstract:
This disclosure provides, among other things, a transgenic animal and a method of using the same to make antibodies that have a common light chain. In certain embodiments, the transgenic animal may comprising a genome comprising a common light chain transgene, wherein the common light chain transgene comprises a non-immunoglobulin light-chain promoter and a common light-chain coding sequence. In certain embodiments, the common light chain is constitutively expressed.
Abstract:
The present invention encompasses methods and compositions for inhibiting, treating, and preventing dental diseases in human and non-human animals, particularly domesticated companion animals.
Abstract:
The Poultry Red Mite (PRM) Dermanyssus gallinae causes high economic losses and is among the most devastating parasites in poultry farming world-wide. Different chemical, physical and biological strategies try to control the expansion of PRM. However, a solution to this problem still has highest priority. We present here an innovative method for the development of an immunological control strategy, based on the identification of mite protein antigens which elicit antibodies with anti-mite activity in the immunized chicken. Hens were immunized with different PRM protein extracts and IgY-antibodies were extracted from the eggs. A PRM in vitro feeding assay which used chicken blood spiked with these IgY enabled the detection of antibodies which caused PRM mortality. A novel combination of 2D-gel analysis and comparative analysis of antibody binding patterns followed by proteomic approaches led to the identification of candidate antigens responsible for the generation of such protective antibodies. These results show the high potential of this strategy for the development of a vaccine against the poultry mite Dermanyssus gallinae.
Abstract:
The present invention provides a method for typing an aggregate (including a fibril) of a polypeptide in a test sample, such as human superoxide dismutase (hSODI), wherein the polypeptide is capable of forming at least two structurally distinct types of aggregates, said method comprising (i) determining the reactivity of the aggregate in the test sample with one or more different antibody preparations in a panel of antibody preparations, wherein each antibody preparation in the panel has binding specificity to a peptide sequence derived from the amino acid sequence of the polypeptide, such that different antibody preparations in the panel have binding specificity to different peptides, and wherein at least one of the antibody preparations of the panel, for which reactivity to the aggregate is determined in step (i), displays differential reactivity to at least two structurally distinct types of the aggregate; and (ii) attributing a type to the aggregate in the test sample, based on the determined level(s) of reactivity with the one or more antibody preparations in the panel as determined in step (i).
Abstract:
The present invention relates to the provision of antibody fragments capable of binding selectively to the Gal-α-(1→3)-Gal epitope. The invention further relates to assay systems comprising these antibody fragments for use in testing transplantation tissue for possible rejection complications. This epitope is often found on porcine tissue destined for human transplantation. The epitope is also found on biopharmaceuticals and on some infectious agents and accordingly the invention also provides assay systems for these applications.
Abstract:
The present invention relates generally to anti-FZD10 antibodies and to methods of using anti-FZD10 antibodies. In particular, the anti-FZD10 antibodies described herein are useful for altering one or more of survival, replication, differentiation and epithelial-to-mesenchymal cell transition of embryonic stem cells and/or for the treatment of diseases, such as a variety of cancers, associated with expression of FZD10, including as stand-alone therapies and in combination therapies with other agents.
Abstract:
The invention provides a method of detecting surrogate markers for active tuberculosis in a serum sample. The surrogate markers are selected from serum mycolic acid antigen, serum anti-mycolic acid antibodies or both. The method includes the steps of combining the serum sample with a labelled monoclonal immunoglobulin antibody or fragment thereof to mycolic acids to produce a combined serum sample, the antibody or fragment thereof not substantially cross-reacting with cholesterol and the label being selected so that binding of the labelled antibody to immobilized mycolic acid antigen of mycobacterial origin produces a detectable signal and combining a blank sample with the labelled monoclonal immunoglobulin antibody or fragment thereof to mycolic acid to produce a combined blank sample. The method includes exposing both samples to immobilised mycolic acid antigen of mycobacterial origin or a synthetic analogue or analogues thereof so that the labelled immunoglobulin antibodies or fragments thereof in each sample bind to the immobilised antigen to produce detectable signals. If the surrogate markers are present, the signal produced by the blank sample will be stronger than that produced by the serum sample because of inhibition of binding of the labelled antibody in the serum sample arising from prior binding of the labelled antibody with the mycolic acid antigen in the serum sample or by competitive binding of serum anti- mycolic acid antibodies in the serum sample to the immobilised mycolic acid antigen or both.
Abstract:
The present invention relates to a composition for inhibiting hyperlipidemia and obesity by inhibiting intestinal absorption of cholesterol. An egg yolk-derived IgY-type antibody against Niemann-Pick C1-Like1 (NPC1L1) is contained, as an active ingredient, in the composition of the present invention and adhered to Niemann-Pick C1-Like1 (NPC1L1) in intestines, wherein the NPC1L1 serves as a cholesterol transport protein in intestines, so as to disrupt binding between cholesterol and the cholesterol transport protein, thereby basically blocking in vivo absorption of cholesterol and thus preventing hyperlipidemia and obesity.