Journal
CELLULAR AND MOLECULAR LIFE SCIENCES
Volume 67, Issue 22, Pages 3823-3836Publisher
SPRINGER BASEL AG
DOI: 10.1007/s00018-010-0460-1
Keywords
RhoA; Rho-kinase; Cardiovascular diseases; Diabetes; Pulmonary hypertension; Erectile dysfunction; Cancer
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RhoA/Rho-kinase pathway plays an important role in many pathological conditions. RhoA participates in the regulation of smooth muscle tone and activates many downstream kinases. The best characterized are the serine/threonine kinase isoforms (Rho-kinase or ROCK), ROCK alpha/ROCK2 and ROCK beta/ROCK1. ROCK is necessary for diverse functions such as local blood flow, arterial/pulmonary blood pressure, airway resistance and intestinal peristalsis. ROCK activation permits actin/myosin interactions and smooth muscle cells contraction by maintaining the activity of myosin light-chain kinase, independently of the free cytosolic calcium level. The sensitization of smooth muscle myofilaments to calcium has been implicated in many pathological states, such as hypertension, diabetes, heart attack, stroke, pulmonary hypertension, erectile dysfunction, and cancer. The focus of this review is on the involvement of RhoA/Rho-kinase in diseases. We will briefly describe the ROCK isoforms and the role of RhoA/Rho-kinase in the vasculature, before exploring the most recent findings regarding this pathway and various diseases.
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