TLR9 traffics through the Golgi complex to localize to endolysosomes and respond to CpG DNA.

ABSTRACT: Toll-like receptor 9 (TLR9) promiscuously binds self- and microbial DNA, but only microbial DNA elicits an inflammatory response. How TLR9 discriminates between self- and foreign DNA is unclear, but inappropriate localization of TLR9 permits response to self-DNA, suggesting that TLR9 localization and trafficking are critical components. The molecular mechanisms controlling the movement of TLR9 may provide new insight into the recognition of DNA in normal and in pathological conditions such as autoimmune systemic lupus erythematosus. We have shown earlier that TLR9 is retained in the endoplasmic reticulum (ER) and it moves to endolysosomes to recognize CpG DNA. Other studies have suggested that TLR9 bypasses the Golgi complex to access endolysosomes. Here, we show that TLR9 translocates fro

SUBMITTER: Chockalingam A 

PROVIDER: S-EPMC2753824 | biostudies-literature | 2009 Mar-Apr

REPOSITORIES: biostudies-literature