ArticleJournal of lipid research2026
KLF7 induced ADRB3-dependent IL-6 production in brown adipocytes during stress.
Article in Journal of lipid research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
In recent studies, acute physiological stress has been shown to enhance liver gluconeogenesis by activating β3-adrenergic receptor (ADRB3)-dependent interleukin-6 (IL-6) production in brown adipocytes, effectively fueling "fight or flight" responses. However, the specific molecular mechanism of this IL-6 production in an ADRB3-dependent manner is not fully understood. ADRB3 regulates multiple metabolic programs in adipose tissue, including thermogenesis, lipolysis, and glucose uptake, by activating cAMP-PKA-CREB signaling. Our previous studies revealed that the transcription factor Krüppel-like factor 7 (KLF7) transcriptionally induces IL-6 expression in white adipocytes. Using Klf7-adipocyte knockout mice, we showed that Klf7 is also required for ADRB3-induced IL-6 production during stress. cAMP-PKA-CREB signaling mediates this transduction via stress and ADRB3 agonist administration in a mouse model in vivo, as well as in brown adipocytes cultured in vitro. cAMP response element-binding protein (CREB) positively regulates KLF7 transcription by binding to the promoter of KLF7. These findings indicate that stress-induced IL-6 production is dependent on Klf7 in adipocytes. KLF7, as a target gene of CREB, responds to ADRB3 activation to increase endocrine IL-6 in a cAMP-PKA-CREB signaling-dependent manner. Our study provides a new theoretical basis for elucidating and enriching the novel mechanism of stress-induced IL-6 production in brown adipocytes.
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