alexa The Roles of Small GTPases in Osteoclast Biology
ISSN: 2161-0533

Orthopedic & Muscular System: Current Research
Open Access

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Review Article

The Roles of Small GTPases in Osteoclast Biology

Megan M. Weivoda* and Merry Jo Oursler

Endocrine Research Unit, Mayo Clinic, USA

*Corresponding Author:
Megan M. Weivoda
Endocrine Research Unit, Mayo Clinic
200 First Street NW, Rochester
MN 55905, USA
Tel: 507-293-3242
E-mail: Weivo[email protected]

Received Date: May 24, 2014; Accepted Date: July 16, 2014; Published Date: July 22, 2014

Citation: Weivoda MM, Oursler MJ (2014) The Roles of Small GTPases in Osteoclast Biology. Orthopedic Muscul Syst 3: 161. doi: 10.4172/2161-0533.1000161

Copyright: © 2014 Weivoda MM, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.



The adult skeleton undergoes bone remodeling that consists of bone formation by osteoblasts and bone resorption by osteoclasts. When the amount of bone resorbed is greater than the amount of new bone formed, low bone mass results, putting individuals at increased risk for osteoporosis and osteoporotic bone fracture. Nitrogenous bisphosphonates (NBPs) are the most common first line treatment for conditions of low bone mass. NBPs reduce osteoclast bone resorption by impairing the post-translational modification of small GTPases. Small GTPases play crucial roles in the differentiation, function, and survival of osteoclasts. Understanding the roles of individual small GTPases in osteoclast biology may lead to more targeted therapies for the treatment of low bone mass. In this review, we discuss recent investigations into the in vivo effects of individual GTPase deletion in osteoclasts and the molecular roles for small GTPases in osteoclast biology.


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