4.5 Article

Rho-Kinase as a Therapeutic Target for Nonalcoholic Fatty Liver Diseases

Journal

DIABETES & METABOLISM JOURNAL
Volume 45, Issue 5, Pages 655-674

Publisher

KOREAN DIABETES ASSOC
DOI: 10.4093/dmj.2021.0197

Keywords

Rho-kinase; AMP-activated protein kinase; Diet; high-fat; Lipogenesis; Nonalcoholic fatty liver disease

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NAFLD, affecting 25% of the global population, is closely linked with obesity and insulin resistance. The role of Rho-kinase (ROCK) in hepatic lipid homeostasis maintenance and its potential therapeutic implications in NAFLD and fibrosis have been highlighted in recent studies.
Nonalcoholic fatty liver disease (NAFLD) is a major public health problem and the most common form of chronic liver disease, affecting 25% of the global population. Although NAFLD is closely linked with obesity, insulin resistance, and type 2 diabetes mellitus, knowledge on its pathogenesis remains incomplete. Emerging data have underscored the importance of Rho-kinase (Rho-associated coiled-coil-containing kinase [ROCK]) action in the maintenance of normal hepatic lipid homeostasis. In par-ticular, pharmacological blockade of ROCK in hepatocytes or hepatic stellate cells prevents the progression of liver diseases such as NAFLD and fibrosis. Moreover, mice lacking hepatic ROCK1 are protected against obesity-induced fatty liver diseases by sup -pressing hepatic de novo lipogenesis. Here we review the roles of ROCK as an indispensable regulator of obesity-induced fatty liv-er disease and highlight the key cellular pathway governing hepatic lipid accumulation, with focus on de novo lipogenesis and its impact on therapeutic potential. Consequently, a comprehensive understanding of the metabolic milieu linking to liver dysfunc-tion triggered by ROCK activation may help identify new targets for treating fatty liver diseases such as NAFLD.

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