The transcription factor Hhex regulates inflammation-related genes in microglia

Microglia have diverse physiological and pathological functions. However, the transcriptional mechanisms remain elusive. Here we sought new transcription factors relevant to microglial functions from the microglial transcriptome of stressed mice and evaluated their roles in primary microglia. TLR2 a...

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Bibliographic Details
Published in:Journal of pharmacological sciences 2022-07, Vol.149 (3), p.166-171
Main Authors: Sakate, Risa, Nishiyama, Masahiro, Fukuda, Yu, Kitaoka, Shiho, Furuyashiki, Tomoyuki
Format: Article
Language:English
Subjects:
Animals
Hhex
Homeodomain Proteins - metabolism
Inflammation
Inflammation - genetics
Inflammation - metabolism
Mice
Mice, Inbred C57BL
Mice, Knockout
Microglia
Microglia - metabolism
Toll-Like Receptor 2 - metabolism
Toll-Like Receptor 4 - metabolism
Transcription Factors - genetics
Transcription Factors - metabolism
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Summary:Microglia have diverse physiological and pathological functions. However, the transcriptional mechanisms remain elusive. Here we sought new transcription factors relevant to microglial functions from the microglial transcriptome of stressed mice and evaluated their roles in primary microglia. TLR2 and TLR4 agonists increased Rel, Atf3, and Cebpb and decreased Hhex in primary microglia as repeated social defeat stress. Although Hhex was not studied in microglia, TLR2 and TLR4 agonists decreased Hhex, and Hhex overexpression attenuated TLR4-increased expression of inflammation-related genes. These findings suggest that Hhex negatively regulates inflammation-related genes in microglia and that TLR2/4 activation reduces Hhex, facilitating TLR4-mediated neuroinflammation.
ISSN:1347-8613
1347-8648
DOI:10.1016/j.jphs.2022.04.006