ArticleAdipocyte2026
Twf1 regulates adipocyte proliferation and differentiation through Yap nucleus accumulation.
Article in Adipocyte, 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
Obesity involves white adipose tissue (WAT) expansion via hyperplasia and hypertrophy. Impaired adipocyte proliferation leads to pathological hypertrophy, inflammation and metabolic dysfunction. Aberrant F‑actin turnover disrupts proliferation/differentiation. Twinfilin‑1 (Twf1) regulates actin dynamics and cell proliferation/differentiation, but its role in adipocytes is unknown. Obese mice were induced by high‑fat diet (HFD) and weight loss by calorie restriction. Inguinal, epididymal and scapular adipose tissues were collected. Proteomics used pressure cycling, DDA library building and DIA quantification. Twf1 expression was validated by RT‑qPCR and Western blot. In C3H10T1/2 preadipocytes, Twf1 knockdown and overexpression were established. Differentiation was induced with dexamethasone, rosiglitazone, insulin and IBMX. Adipogenesis and proliferation were assessed by RT‑qPCR, Western blot, Oil Red O and CCK8. Nuclear‑cytoplasmic fractionation evaluated Yap localization and HIPPO activity. HFD mice showed weight gain, dyslipidemia and adipocyte hypertrophy, reversed by weight loss. Proteomics identified 43 proteins intersecting obesity, weight loss, and actin‑related datasets; Twf1 was upregulated in obese epididymal/inguinal fat and downregulated after weight loss. In C3H10T1/2 cells, Twf1 knockdown enhanced white adipocyte differentiation (upregulated Pparg2, Fsp27, Fabp4) and proliferation (2.28‑fold vs. control), promoted Yap nuclear accumulation, and inhibited HIPPO signalling. Twf1 overexpression reduced differentiation, lipid droplets, and proliferation (to 44.7% of control). Twf1 is upregulated in white/beige adipose tissue of obese mice and downregulated after weight loss. Twf1 knockdown promotes Yap nuclear accumulation, inhibits HIPPO and enhances adipocyte proliferation and white adipocyte maturation, indicating a key role in obesity development.
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