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Learn MorePrevention and treatment options for hepatocellular carcinoma (HCC) are presently limited, underscoring the necessity for elucidating molecular mechanisms underlying HCC development and identifying new prevention and therapeutic targets. We demonstrate a unique precancerous niche that features enhanced p53 pathway, aberrant cytoplasmic p21WAF1/CIP1-expressing hepatocytes, and increased CD8+ T lymphocyte and macrophage infiltration in the livers of Ncoa5+/- mouse model of HCC. Metformin treatment reverses these precancerous features and profoundly reduces tumor incidence. Our data also reveal that a subset of HCC patients with a similar precancerous niche in the adjacent noncancerous livers had a relatively poor prognosis. Our study suggests a perceptible hepatic niche predisposing to HCC development and uncovers new actions of metformin in the prevention and treatment of HCC. SOURCE: Hua Xiao (xiaoh@psl.msu.edu) - Xiao Lab Michigan State University
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