| Features: oral antidiabetic agent, | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Metformin is a pleiotropic drug: attributed to its action on AMPK Metformin is a biguanide drug used primarily for type 2 diabetes. Mechanistically, it is best described as a bioenergetic modulator: partial inhibition of mitochondrial respiration can raise AMP/ADP, engage AMPK, and suppress mTORC1 signaling; systemically it reduces hepatic gluconeogenesis and can lower insulin/IGF-1 growth signaling. In oncology, observational studies suggested improved outcomes in some settings, but randomized trial data are mixed (e.g., large adjuvant breast cancer data did not show broad benefit overall). Long-term use can be associated with vitamin B12 deficiency, and prescribing requires attention to renal function due to rare lactic acidosis risk in predisposed states. Metformin directly(partially) inhibits Complex I of the electron transport chain (ETC) in mitochondria. This inhibition decreases mitochondrial ATP production and forces cells to rely more on glycolysis for energy. Cancer cells, especially those with high energy demands, may be particularly sensitive to a drop in ATP levels. The inhibition of Complex I also increases the AMP/ATP ratio, setting the stage for the activation of downstream energy stress pathways. AMPK activation results in the inhibition of the mammalian target of rapamycin (mTOR) pathway, a central regulator of protein synthesis and cellular growth. mTOR inhibition reduces cell proliferation and limits tissue growth, which can slow tumor progression. Metformin reduces circulating insulin levels, which in turn can decrease the activation of the insulin and insulin-like growth factor-1 (IGF-1) receptor pathways. ETC Inhibitors: Drugs that directly inhibit specific ETC complexes (e.g., Complex I inhibitors like metformin or phenformin) can increase electron leakage and ROS production.(dose- and context-dependent, and not consistent) -known as mild OXPHOS inhibitor(Complex I modulator)
Time-Scale Flag (TSF): P / R / G
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| Source: HalifaxProj(inhibit) CGL-CS TCGA |
| Type: |
| Human malignancies frequently exhibit mutations in the TGF-β pathway, and overactivation of this system is linked to tumor growth by promoting angiogenesis and inhibiting the innate and adaptive antitumor immune responses. Anti-inflammatory cytokine. In normal tissues, TGF-β plays an essential role in cell cycle regulation, immune function, and tissue remodeling. - In early carcinogenesis, TGF-β typically acts as a tumor suppressor by inhibiting cell proliferation and inducing apoptosis. In advanced cancers, cells frequently become resistant to the growth-inhibitory effects of TGF-β. - TGF-β then switches roles and promotes tumor progression by stimulating epithelial-to-mesenchymal transition (EMT), cell invasion, metastasis, and immune evasion. Non-canonical (Smad-independent) pathways, such as MAPK, PI3K/Akt, and Rho signaling, also contribute to TGF-β-mediated responses. Elevated levels of TGF-β have been detected in many advanced-stage cancers, including breast, lung, colorectal, pancreatic, and prostate cancers. - The switch from a tumor-suppressive to a tumor-promoting role is often associated with increased TGF-β production and activation in the tumor microenvironment. High TGF-β expression or signaling activity is frequently correlated with aggressive disease features, resistance to therapy, increased metastasis, and poorer overall survival in many cancer types. |
| 2386- | MET, | Mechanisms of metformin inhibiting cancer invasion and migration |
| - | Review, | Var, | NA |
Query results interpretion may depend on "conditions" listed in the research papers. Such Conditions may include : -low or high Dose -format for product, such as nano of lipid formations -different cell line effects -synergies with other products -if effect was for normal or cancerous cells
Filter Conditions: Pro/AntiFlg:% IllCat:% CanType:% Cells:% prod#:11 Target#:304 State#:% Dir#:1
wNotes=0 sortOrder:rid,rpid