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Usage Information

Hepatic lipids promote liver metastasis
Yongjia Li, … , Steven L. Teitelbaum, Wei Zou
Yongjia Li, … , Steven L. Teitelbaum, Wei Zou
Published September 3, 2020
Citation Information: JCI Insight. 2020;5(17):e136215. https://doi.org/10.1172/jci.insight.136215.
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Research Article Hepatology Oncology

Hepatic lipids promote liver metastasis

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Abstract

Obesity predisposes to cancer and a virtual universality of nonalcoholic fatty liver disease (NAFLD). However, the impact of hepatic steatosis on liver metastasis is enigmatic. We find that while control mice were relatively resistant to hepatic metastasis, those which were lipodystrophic or obese, with NAFLD, had a dramatic increase in breast cancer and melanoma liver metastases. NAFLD promotes liver metastasis by reciprocal activation initiated by tumor-induced triglyceride lipolysis in juxtaposed hepatocytes. The lipolytic products are transferred to cancer cells via fatty acid transporter protein 1, where they are metabolized by mitochondrial oxidation to promote tumor growth. The histology of human liver metastasis indicated the same occurs in humans. Furthermore, comparison of isolates of normal and fatty liver established that steatotic lipids had enhanced tumor-stimulating capacity. Normalization of glucose metabolism by metformin did not reduce steatosis-induced metastasis, establishing the process is not mediated by the metabolic syndrome. Alternatively, eradication of NAFLD in lipodystrophic mice by adipose tissue transplantation reduced breast cancer metastasis to that of control mice, indicating the steatosis-induced predisposition is reversible.

Authors

Yongjia Li, Xinming Su, Nidhi Rohatgi, Yan Zhang, Jonathan R. Brestoff, Kooresh I. Shoghi, Yalin Xu, Clay F. Semenkovich, Charles A. Harris, Lindsay L. Peterson, Katherine N. Weilbaecher, Steven L. Teitelbaum, Wei Zou

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Usage data is cumulative from February 2022 through February 2023.

Usage JCI PMC
Text version 1,856 282
PDF 279 131
Figure 339 6
Table 42 0
Supplemental data 70 4
Citation downloads 56 0
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Total Views 3,065

Usage information is collected from two different sources: this site (JCI) and Pubmed Central (PMC). JCI information (compiled daily) shows human readership based on methods we employ to screen out robotic usage. PMC information (aggregated monthly) is also similarly screened of robotic usage.

Various methods are used to distinguish robotic usage. For example, Google automatically scans articles to add to its search index and identifies itself as robotic; other services might not clearly identify themselves as robotic, or they are new or unknown as robotic. Because this activity can be misinterpreted as human readership, data may be re-processed periodically to reflect an improved understanding of robotic activity. Because of these factors, readers should consider usage information illustrative but subject to change.

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