The enzyme Sialic acid acetylesterase maintains peripheral B cell tolerance and prevents the activation of B cells that see self antigens weakly. This enzyme is of relevance in both murine and human B cells. Inhibiting this esterase may permit the activation of B cells that see conserved but weak epitopes on HIV gp120. The SIAE gene will be knocked down in humanized mice. Both SIAE knockdown humanized mice and Siae mutant conventional mice will be immunized with gp140 trimers in an attempt to ask if inhibition of SIAE favors the generation of neutralizing antibodies against HIV.
|Hirschfield, G M; Xie, G; Lu, E et al. (2012) Association of primary biliary cirrhosis with variants in the CLEC16A, SOCS1, SPIB and SIAE immunomodulatory genes. Genes Immun 13:328-35|
|Pillai, Shiv; Netravali, Ilka Arun; Cariappa, Annaiah et al. (2012) Siglecs and immune regulation. Annu Rev Immunol 30:357-92|
|Kalay, Ersan; Sezgin, Orhan; Chellappa, Vasant et al. (2012) Mutations in RIPK4 cause the autosomal-recessive form of popliteal pterygium syndrome. Am J Hum Genet 90:76-85|
|Pillai, Shiv; Mattoo, Hamid; Cariappa, Annaiah (2011) B cells and autoimmunity. Curr Opin Immunol 23:721-31|