ArticleInflammation research : official journal of the European Histamine Research Society ... [et al.]2025
Functional characterization of novel anti-DEFA5 monoclonal antibody clones 1A8 and 4F5 in inflammatory bowel disease colitis tissues.
Article in Inflammation research : official journal of the European Histamine Research Society ... [et al.], 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed.
- A (poly)Pro tip for preserving native disulfide connectivity during thiol-maleimide bioconjugation of disulfide-rich peptides.Chemical science · 2026Article
- Inhibition of the T2R/α-Defensin Pathway MediatesToxics · 2026Article
- Secure Ileal Pouch-Anal Anastomosis for Histologic Indeterminate Colitis.Journal of clinical medicine · 2025Article
- Structural and epitope characterization of anti-DEFA5 monoclonal antibodies clones 1A8 and 4F5 for inflammatory bowel disease subtype diagnostics.International journal of biological macromolecules · 2025Article
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Abstract
backgroundThe aberrant expression of α defensin 5 (DEFA5) protein in colonic inflammatory bowel diseases (IBDs) underlies the distinct pathogenesis of Crohn's colitis (CC). It can serve as a biomarker for differentiating CC from Ulcerative colitis (UC), particularly in Indeterminate colitis (IC) cases into UC and CC. We evaluated the specificity of commercially available anti-DEFA5 antibodies, emphasizing the need to further validate their appropriateness for a given application and highlighting the necessity for novel antibodies.
methodsWe established two mice monoclonal DEFA5 antibody clones, 1A8 and 4F5, by immunizing mice with purified recombinant protein. We validated the specificity, sensitivity, and cross-reactivity of these antibodies in recognizing both endogenous and recombinant DEFA5 protein, especially for use in Immunohistochemistry (IHC), Western blot (WB), Immunoprecipitation (IP), and enzyme-linked immunosorbent assay (ELISA).
resultsClones 1A8 and 4F5 effectively recognized the endogenous DEFA5 in active human colon tissue from patients with diverticulitis (DV), UC, CC, and IC disease samples, as well as in transiently transfected HEK293T cells expressing DEFA5 with minimal non-confounding cross reactivity.
conclusionsThe 1A8 and 4F5 clones are useful for a wide variety of immunoassays, including WB, IHC, IP/WB, and ELISA. Their specificity enhances their potential as valuable tools for research applications in IBD colitis.
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