First Author | Endo M | Year | 2006 |
Journal | J Immunol | Volume | 176 |
Issue | 10 | Pages | 6245-53 |
PubMed ID | 16670335 | Mgi Jnum | J:131780 |
Mgi Id | MGI:3774464 | Doi | 10.4049/jimmunol.176.10.6245 |
Citation | Endo M, et al. (2006) C/EBP homologous protein (CHOP) is crucial for the induction of caspase-11 and the pathogenesis of lipopolysaccharide-induced inflammation. J Immunol 176(10):6245-53 |
abstractText | C/EBP homologous protein (CHOP)/growth arrest and DNA damage-inducible gene 153 is a C/EBP family transcription factor which is involved in endoplasmic reticulum (ER) stress-mediated apoptosis. To determine whether the ER stress-CHOP pathway is involved in the pathogenesis of the lung inflammation, mice were given LPS intratracheally. Treatment with LPS induced mRNAs for CHOP and BiP. The LPS-induced inflammation in lung, including the IL-1beta activity in bronchoalveolar lavage fluid, was attenuated in the Chop knockout mice. Caspase-11, which is needed for the activation of procaspase-1 and pro-IL-1beta, was induced by LPS treatment in the lung and primary cultured macrophages. The induction of caspase-11 by LPS was suppressed in Chop knockout mice. Caspase-11 was also induced by such ER stress inducers as thapsigargin or tunicamycin. These results show that CHOP plays a crucial role in the pathogenesis of inflammation through the induction of caspase-11. |