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Direct Regulation of TLR5 Expression by Caveolin-1
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  • Journal title : Molecules and Cells
  • Volume 38, Issue 12,  2015, pp.1111-1117
  • Publisher : Korea Society for Molecular and Cellular Biology
  • DOI : 10.14348/molcells.2015.0213
 Title & Authors
Direct Regulation of TLR5 Expression by Caveolin-1
Lim, Jae Sung; Nguyen, Kim Cuc Thi; Han, Jung Min; Jang, Ik-Soon; Fabian, Claire; Cho, Kyung A;
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 Abstract
Toll-like receptor 5 (TLR5) is a specific receptor for microbial flagellin and is one of the most well-known receptors in the TLR family. We reported previously that TLR5 signaling is well maintained during aging and that caveolin-1 may be involved in TLR5 signaling in aged macrophages through direct interactions. Therefore, it is important to clarify whether caveolin-1/TLR5 interactions affect TLR5 expression during aging. To assess the effect of caveolin-1 on TLR5, we analyzed TLR5 expression in senescent fibroblasts and aged tissues expressing high levels of caveolin-1. As expected, TLR5 mRNA and protein expression was well maintained in senescent fibroblasts and aged tissues, whereas TLR4 mRNA and protein were diminished in those cells and tissues. To determine the mechanism of caveolin-1-dependent TLR5 expression, we examined TLR5 expression in caveolin-1 deficient mice. Interestingly, TLR5 mRNA and protein levels were decreased dramatically in tissues from caveolin-1 knockout mice. Moreover, overexpressed caveolin-1 in vitro enhanced TLR5 mRNA through the MAPK pathway and prolonged TLR5 protein half-life through direct interaction. These results suggest that caveolin-1 may play a crucial role in maintaining of TLR5 by regulating transcription systems and increasing protein half-life.
 Keywords
aging;caveolin-1;senescence;toll-like receptor 5;
 Language
English
 Cited by
1.
Versatile Functions of Caveolin-1 in Aging-related Diseases, Chonnam Medical Journal, 2017, 53, 1, 28  crossref(new windwow)
2.
Prospects of the use of bacteriophage-based virus-like particles in the creation of anthrax vaccines, Applied Biochemistry and Microbiology, 2016, 52, 9, 818  crossref(new windwow)
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