Choline Kinase Beta is Required for Normal Endochondral Bone Formation

Overview

Journal Biochim Biophys Acta

Specialties Biochemistry
Biophysics

Date 2014 Mar 19

PMID 24637075

Citations 13

Authors

Zhuo Li

Gengshu Wu

Roger B Sher

Zohreh Khavandgar

Martin Hermansson

Gregory A Cox

Michael R Doschak

Monzur Murshed

Frank Beier

Dennis E Vance

Affiliations

Soon will be listed here.

Abstract

Background: Choline kinase has three isoforms encoded by the genes Chka and Chkb. Inactivation of Chka in mice results in embryonic lethality, whereas Chkb(-/-) mice display neonatal forelimb bone deformations.

Methods: To understand the mechanisms underlying the bone deformations, we compared the biology and biochemistry of bone formation from embryonic to young adult wild-type (WT) and Chkb(-/-) mice.

Results: The deformations are specific to the radius and ulna during the late embryonic stage. The radius and ulna of Chkb(-/-) mice display expanded hypertrophic zones, unorganized proliferative columns in their growth plates, and delayed formation of primary ossification centers. The differentiation of chondrocytes of Chkb(-/-) mice was impaired, as was chondrocyte proliferation and expression of matrix metalloproteinases 9 and 13. In chondrocytes from Chkb(-/-) mice, phosphatidylcholine was slightly lower than in WT mice whereas the amount of phosphocholine was decreased by approximately 75%. In addition, the radius and ulna from Chkb(-/-) mice contained fewer osteoclasts along the cartilage/bone interface.

Conclusions: Chkb has a critical role in the normal embryogenic formation of the radius and ulna in mice.

General Significance: Our data indicate that choline kinase beta plays an important role in endochondral bone formation by modulating growth plate physiology.

Citing Articles

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Groven R, Nauta S, Gruisen J, Claes B, Greven J, van Griensven M Front Chem. 2022; 9:780626.

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Suzuki A, Minamide M, Iwaya C, Ogata K, Iwata J Int J Mol Sci. 2020; 21(23).

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How To Build a Bone: PHOSPHO1, Biomineralization, and Beyond.

Dillon S, Staines K, Millan J, Farquharson C JBMR Plus. 2019; 3(7):e10202.

PMID: 31372594 PMC: 6659447. DOI: 10.1002/jbm4.10202.

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