Abstract:
:The maintenance of intestinal tissue homeostasis is vital for the resistance against inflammatory bowel diseases (IBDs). Necroptosis is identified as an alternative mode of regulated cell death, which plays a pivotal role in tissue homeostasis. Thus, the roles of RIP3-mediated necroptosis in intestinal inflammation have been extensively studied. However, the biological implications of the mixed lineage kinase-like protein (MLKL), a molecule downstream of RIP3 in gut remain unclear. In this study, the role of MLKL in DSS-induced colitis was examined, and the contribution of gut microbiota was also determined. Compared with non-littermate WT mice, the survival rate, clinical score, intestinal damage and intestinal mucosal barrier integrity of non-littermate MLKL-deficient mice are significantly improved. MLKL deficiency prevents inflammatory cytokines production and MAPK signaling activation. Hence, MLKL deficiency inhibits DSS-induced colitis. Moreover, we proved that DSS susceptibility difference between two genotypes is not driven by intestinal microbiota based on the co-housing of two non-littermate genotypes and qPCR detection of fecal dominant bacterial taxa.
journal_name
Mol Immunoljournal_title
Molecular immunologyauthors
Zhang J,Qin D,Yang YJ,Hu GQ,Qin XX,Du CT,Chen Wdoi
10.1016/j.molimm.2019.01.018subject
Has Abstractpub_date
2019-03-01 00:00:00pages
132-141eissn
0161-5890issn
1872-9142pii
S0161-5890(18)31043-5journal_volume
107pub_type
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