TY - JOUR
T1 - CCL2/monocyte chemoattractant protein 1 and parathyroid hormone action on bone
AU - Siddiqui, Jawed Akhtar
AU - Partridge, Nicola C.
N1 - Funding Information:
This work was supported in part by RO1 DK48109 (to NP) from NIH and by the NYU CTSA grant UL1 TR001445 from the National Center for Advancing Translational Sciences, NIH.
Publisher Copyright:
© 2017 Siddiqui and Partridge.
PY - 2017/3/29
Y1 - 2017/3/29
N2 - Chemokines are small molecules that play a crucial role as chemoattractants for several cell types, and their components are associated with host immune responses and repair mechanisms. Chemokines selectively recruit monocytes, neutrophils, and lymphocytes and induce chemotaxis through the activation of G protein-coupled receptors. Two well-described chemokine families (CXC and CC) are known to regulate the localization and trafficking of immune cells in cases of injury, infection, and tumors. Monocyte chemoattractant protein 1 (MCP-1/CCL2) is one of the important chemokines from the CC family that controls migration and infiltration of monocytes/macrophages during inflammation. CCL2 is profoundly expressed in osteoporotic bone and prostate cancer-induced bone resorption. CCL2 also regulates physiological bone remodeling in response to hormonal and mechanical stimuli. Parathyroid hormone (PTH) has multifaceted effects on bone, depending on the mode of administration. Intermittent PTH increases bone in vivo by increasing the number and activity of osteoblasts, whereas a continuous infusion of PTH decreases bone mass by stimulating a net increase in bone resorption. CCL2 is essential for both anabolic and catabolic effects of PTH. In this review, we will discuss the pharmacological role of PTH and involvement of CCL2 in the processes of PTH-mediated bone remodeling.
AB - Chemokines are small molecules that play a crucial role as chemoattractants for several cell types, and their components are associated with host immune responses and repair mechanisms. Chemokines selectively recruit monocytes, neutrophils, and lymphocytes and induce chemotaxis through the activation of G protein-coupled receptors. Two well-described chemokine families (CXC and CC) are known to regulate the localization and trafficking of immune cells in cases of injury, infection, and tumors. Monocyte chemoattractant protein 1 (MCP-1/CCL2) is one of the important chemokines from the CC family that controls migration and infiltration of monocytes/macrophages during inflammation. CCL2 is profoundly expressed in osteoporotic bone and prostate cancer-induced bone resorption. CCL2 also regulates physiological bone remodeling in response to hormonal and mechanical stimuli. Parathyroid hormone (PTH) has multifaceted effects on bone, depending on the mode of administration. Intermittent PTH increases bone in vivo by increasing the number and activity of osteoblasts, whereas a continuous infusion of PTH decreases bone mass by stimulating a net increase in bone resorption. CCL2 is essential for both anabolic and catabolic effects of PTH. In this review, we will discuss the pharmacological role of PTH and involvement of CCL2 in the processes of PTH-mediated bone remodeling.
KW - Chemokines
KW - Monocyte chemoattractant protein 1
KW - Osteoblast
KW - Osteoclast
KW - Parathyroid hormone and bone remodeling
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U2 - 10.3389/fendo.2017.00049
DO - 10.3389/fendo.2017.00049
M3 - Review article
AN - SCOPUS:85017100303
SN - 1664-2392
VL - 8
JO - Frontiers in Endocrinology
JF - Frontiers in Endocrinology
IS - MAR
M1 - 49
ER -