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- W4311676231 abstract "PIK3CA-related overgrowth syndrome (PROS) is a genetic disorder caused by somatic mosaic gain-of-function mutations of PIK3CA. Clinical presentation of patients is diverse and associated with endocrine disruption. Adipose tissue is frequently involved, but its role in disease development and progression has not been elucidated. Here, we created a mouse model of PIK3CA-related adipose tissue overgrowth that recapitulates patient phenotype. We demonstrate that PIK3CA mutation leads to GLUT4 membrane accumulation with a negative feedback loop on insulin secretion, a burst of liver IGFBP1 synthesis with IGF-1 sequestration, and low circulating levels. Mouse phenotype was mainly driven through AKT2. We also observed that PIK3CA mutation induces metabolic reprogramming with Warburg-like effect and protein and lipid synthesis, hallmarks of cancer cells, in vitro, in vivo, and in patients. We lastly show that alpelisib is efficient at preventing and improving PIK3CA-adipose tissue overgrowth and reversing metabolomic anomalies in both animal models and patients." @default.
- W4311676231 created "2022-12-28" @default.
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- W4311676231 date "2022-12-09" @default.
- W4311676231 modified "2023-10-18" @default.
- W4311676231 title "PIK3CA gain-of-function mutation in adipose tissue induces metabolic reprogramming with Warburg-like effect and severe endocrine disruption" @default.
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- W4311676231 doi "https://doi.org/10.1126/sciadv.ade7823" @default.
- W4311676231 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36490341" @default.
- W4311676231 hasPublicationYear "2022" @default.
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