id author title date pages extension mime words sentences flesch summary cache txt cord-290396-cy4y8vnt Kumar, Matam Vijay Innate immunity in the retina: Toll-like receptor (TLR) signaling in human retinal pigment epithelial cells 2004-07-01 .txt text/plain 5490 363 61 title: Innate immunity in the retina: Toll-like receptor (TLR) signaling in human retinal pigment epithelial cells We evaluated the expression and function of TLRs in human retinal pigment epithelial (RPE) cells. The presence of TLRs on RPE cells and the resultant TLR signaling in RPE cells suggest that these molecules may play an important role in innate and adaptive immune responses within the retina. Our data suggest that the binding of poly I:C, an analog of dsRNA, to TLR 3 on human RPE cells resulted in the production of IFN-h and other cytokines, chemokines, and adhesion molecules. Total RNA prepared from confluent monolayers of human RPE cells and from suspension cultures of U937 was used to evaluate the constitutive expression of TLR mRNA. To study the effects of TLR activators, human RPE cells were washed with serum-free media (SFM) and incubated in SFM for 12 h in the presence of poly I:C (100 Ag/ml ), LPS (5 Ag/ml), or IFN-g (100 U/ml). ./cache/cord-290396-cy4y8vnt.txt ./txt/cord-290396-cy4y8vnt.txt