mTORC1
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Related Articles from SNS
Ageing blunts the phospho-proteomic response to resistance exercise in humans
Ageing blunts the adaptive growth response in human skeletal muscle. To define the molecular processes underlying this impairment, we performed unbiased analysis of the phosphoproteome and total proteome in healthy young and old human skeletal muscle following acute resistance exercise (ResEX) and essential amino acid (EAA) ingestion. Ageing led to global suppression of the growth-induced global phosphoproteome, despite intact mTORC1 activation in old muscle.
SCD-dependent lipid metabolism licenses alternative macrophage activation and macrophage plasticity
Lipid metabolic reprogramming accompanies macrophage activation, yet our understanding of why macrophages profoundly reshape their lipid composition remains unclear. Here, we identify stearoyl-CoA desaturase (SCD) as a lipid-metabolic checkpoint required for the acquisition of the alternatively activated macrophage (AAM) cell state. We show that SCD maintains lipid desaturation balance by ensuring the conversion of newly synthesized saturated long-fatty acids (SFAs) into monounsaturated...
Germline regulation of tumor evolutionary dynamics shapes multiple myeloma progression
Germline variation shapes cancer risk, yet its influence on the evolutionary dynamics of established tumors remains poorly understood. In multiple myeloma, subclonal diversification drives disease progression and treatment failure, but the heritable factors that modulate this process are unknown. Here, we show that germline variation is associated with tumor evolutionary features, implicating inherited regulation in subclonal expansion.
Metformin Redirects Autophagy from Bulk Turnover to Mitochondrial Clearance
Metformin is the most widely prescribed antidiabetic drug and an active candidate for repurposing in oncology. How it engages autophagy - a pathway central to both its metabolic and its anti-tumor effects - has remained unresolved, with reports of induction, suppression, and no effect. Here we show that metformin reroutes rather than induces or inhibits autophagy in human cancer cells: at therapeutic concentrations, it suppresses bulk cytosolic turnover by selectively blocking WIPI2-mediated...