Production and Characterization of Recombinant Rat Non-Collagen Domain of α3 Chain of Type IV Collagen α3 (IV) NC1 Antigen

The glomerulonephritis disease is characterized by inflammation of glomeruli or small blood vessels in the kidney that causes kidney diseases. The reason of glomerulonephritis disease is to deposit the anti-GBM auto antibody in the glomerular basement membrane. The type IV collagen is the main component of glomerular basement membrane that has α3 chain of type (IV) collagen of non-collagenous domain which contains N-terminal 7S domain, a triple helical collagenous domain and C-terminal non-collagenous glomerular domain (NC1). The amino terminal of α3 (IV) NC1 that induces the Experimental Autoimmuno Glomerulonephritis (EAG) in rat model has been identified. The recombinant rat α3 (IV) NC1 antigen has nine amino acid spans that are consistent with antibody or T cell epitope that induces in EAG. The research is carried out on the recombinant rat α3 (IV) NC1 production, purification, quantification, and characterization. The circulation of anti-GBM antibody in glomerular basement membrane can be measured by the ELISA assay. In addition, the recombinant rat antigen is secreted in HEK293 cell supernatant that is purified by Anti-FLAG M2 monoclonal IgG antibody affinity column and characterized and quantified by SDS-PAGE gel electrophoresis and Western blotting techniques.

肿瘤抑素研究进展

肿瘤生长分化需要新的血管满足自身对营养物质和氧气的需要,这个过程称为血管再生,因此学者提出干扰血管生成就可以抑制肿瘤生长。肿瘤抑素(α3(IV)NC1)是一种来源于IV型胶原α3链蛋白水解的C-末端非胶原(NC1)结构,它具有潜在的抗血管生成作用而引起关注,α3(IV)NC1能抑制肿瘤扩散,促进内皮细胞凋亡和抑制不同的肿瘤血管生成,从而有望成为未来治疗癌症的药物。这篇综述调查研究了IV型胶原和具有抗血管生成作用的α3(IV)NC1的发现,以及它的信号传导机制。