linc-ADAIN, a human adipose lincRNA, regulates adipogenesis by modulating KLF5 and IL-8 mRNA stability
O'Reilly, Marcella E ; Ho, Sebastian ; Coronel, Johana ; Zhu, Lucie ; Liu, Wen ; Xue, Chenyi ; Kim, Eunyoung ; Cynn, Esther ; Matias, Caio V ; Soni, Rajesh Kumar ... show 8 more
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Abstract
Adipose tissue remodeling and dysfunction, characterized by elevated inflammation and insulin resistance, play a central role in obesity-related development of type 2 diabetes (T2D) and cardiovascular diseases. Long intergenic non-coding RNAs (lincRNAs) are important regulators of cellular functions. Here, we describe the functions of linc-ADAIN (adipose anti-inflammatory), an adipose lincRNA that is downregulated in white adipose tissue of obese humans. We demonstrate that linc-ADAIN knockdown (KD) increases KLF5 and interleukin-8 (IL-8) mRNA stability and translation by interacting with IGF2BP2. Upregulation of KLF5 and IL-8, via linc-ADAIN KD, leads to an enhanced adipogenic program and adipose tissue inflammation, mirroring the obese state, in vitro and in vivo. KD of linc-ADAIN in human adipose stromal cell (ASC) hTERT adipocytes implanted into mice increases adipocyte size and macrophage infiltration compared to implanted control adipocytes, mimicking hallmark features of obesity-induced adipose tissue remodeling. linc-ADAIN is an anti-inflammatory lincRNA that limits adipose tissue expansion and lipid storage.
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O'Reilly ME, Ho S, Coronel J, Zhu L, Liu W, Xue C, Kim E, Cynn E, Matias CV, Soni RK, Wang C, Ionita-Laza I, Bauer RC, Ross L, Zhang Y, Corvera S, Fried SK, Reilly MP. linc-ADAIN, a human adipose lincRNA, regulates adipogenesis by modulating KLF5 and IL-8 mRNA stability. Cell Rep. 2024 May 28;43(5):114240. doi: 10.1016/j.celrep.2024.114240. Epub 2024 May 14. PMID: 38753486; PMCID: PMC11334222.