What question did this study set out to answer?

To evaluate the specific regulatory role of the natural Wnt antagonist Dkk1 in osteoblast differentiation and in vivo bone remodeling.

June 1, 2006Journal of Bone and Mineral ResearchOpen Access

Deletion of a Single Allele of the Dkk1 Gene Leads to an Increase in Bone Formation and Bone Mass

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Authors

FMFrédéric MorvanNovartis (Switzerland)KBKim E. BoulukosUniversité Côte d'Azur PCPhilippe Clément-LacroixGalapagos (France)

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Implication

Experimental study demonstrates increased bone formation and bone mass in heterozygous Dkk1-deficient mice, indicating that Dkk1 inhibition provides potent anabolic skeletal effects.

Key Points

To evaluate the specific regulatory role of the natural Wnt antagonist Dkk1 in osteoblast differentiation and in vivo bone remodeling.
Transduced rat primary calvaria cells with retroviral Dkk1 and exposed MC3T3-E1 cells to recombinant murine Dkk1 to evaluate osteoblast differentiation, alkaline phosphatase activity, and nodule mineralization in vitro.
Conducted structural, cellular, and dynamic bone remodeling analyses in heterozygous Dkk1-deficient (Dkk1+/-) mice to evaluate in vivo skeletal consequences while avoiding homozygous embryonic lethality.
Retroviral and recombinant Dkk1 in vitro completely inhibited osteoblast differentiation and mineralized nodule formation, markedly decreased alkaline phosphatase expression, and increased adipocyte differentiation.
Heterozygous Dkk1-deficient mice exhibited several-fold increases in osteoblast numbers, mineral apposition rate, and bone formation rate with unchanged bone resorption, resulting in a marked net gain in bone mass.

Cite This Study

Morvan et al. (2006) studied this question.

synapsesocial.com/papers/6a8af0dde6afc07dcbf44a79 https://doi.org/10.1359/jbmr.060311

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Implication

Experimental study demonstrates increased bone formation and bone mass in heterozygous Dkk1-deficient mice, indicating that Dkk1 inhibition provides potent anabolic skeletal effects.

Deletion of a Single Allele of the Dkk1 Gene Leads to an Increase in Bone Formation and Bone Mass

Discussion

Member takes

Implication

Key Points

Cite This Study

Deletion of a Single Allele of the Dkk1 Gene Leads to an Increase in Bone Formation and Bone Mass

Discussion

Member takes

Implication

Key Points

Cite This Study

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