membrane cofactor of proteolysis.
Finally, Wysocki et al. [ 21] have described the importance of the complement cascade during PRRSv response, and the red module contains genes encoding several complement regulatory proteins such as C4BPA, the decay-accelerating factor (DAF) CD55, the membrane cofactor of proteolysis (MCP) CD46 and the C1 inhibitor SERPING1, all inhibitors of complement activation [ 62].
For the other surface markers that were tested, cEPDCs and sEPDCs yielded similar results, i.e., hyaluronate receptor (CD44), membrane cofactor protein of the complement system (MCP; CD46) and major T-cell antigen (Thy1; CD90) were present.
Subsequently, the PA-1 and SW626 cell lines were found to secrete a soluble form of the membrane cofactor protein (CD46).
Thus, our studies reveal two novel complement resistance mechanisms of ovarian tumour cells: (i) production of factor H-like protein and factor H and (ii) secretion of soluble membrane cofactor protein.
The explanation to this was suggested by immunoblotting analysis which showed that PA-1 and SW626 cells produced a soluble form of the membrane cofactor protein (MCP/CD46) into their growth supernatants (data not shown).
CD46 is a membrane cofactor protein that facilitates degradation of C3b and C4b so that they do not continue as part of the C3 convertase; it is therefore relevant at the C3 activation step.
With Membrane cofactor protein (MCP), a limited number of studies have so far been carried out with regard to recombinant sMCP's ability to inhibit complement in vitro and in vivo and with organs of animals transgenic for hMCP in the field of xenotransplantation [70].
SNP rs135279925 (ENSBTAT00000007104:c.1093C>T) is located within the 10th and last exon of CD46, a membrane cofactor protein.
Mutations in human complement regulator, membrane cofactor protein (CD46), predispose to development of familial hemolytic uremic syndrome.
Membrane cofactor protein (MCP, CD46) is one of the complement regulatory proteins, and is widely distributed in human organs and protects cells from complement-mediated cytotoxicity.
