» Articles » PMID: 21602802

Lrp5 Functions in Bone to Regulate Bone Mass

Abstract

The human skeleton is affected by mutations in low-density lipoprotein receptor-related protein 5 (LRP5). To understand how LRP5 influences bone properties, we generated mice with osteocyte-specific expression of inducible Lrp5 mutations that cause high and low bone mass phenotypes in humans. We found that bone properties in these mice were comparable to bone properties in mice with inherited mutations. We also induced an Lrp5 mutation in cells that form the appendicular skeleton but not in cells that form the axial skeleton; we observed that bone properties were altered in the limb but not in the spine. These data indicate that Lrp5 signaling functions locally, and they suggest that increasing LRP5 signaling in mature bone cells may be a strategy for treating human disorders associated with low bone mass, such as osteoporosis.

Citing Articles

Impact of Different Cell Types on the Osteogenic Differentiation Process of Mesenchymal Stem Cells.

Wang Z, Ren L, Li Z, Qiu Q, Wang H, Huang X Stem Cells Int. 2025; 2025:5551222.

PMID: 39980864 PMC: 11842143. DOI: 10.1155/sci/5551222.


Aromatic Amino Acid Hydroxylases as Off-Targets of Histone Deacetylase Inhibitors.

Baumann A, Papenkordt N, Robaa D, Szigetvari P, Vogelmann A, Bracher F ACS Chem Neurosci. 2024; 15(22):4143-4155.

PMID: 39523540 PMC: 11587510. DOI: 10.1021/acschemneuro.4c00346.


Wnt7b overexpression in osteoblasts stimulates bone formation and reduces obesity in mice on a high-fat diet.

Song F, Marmo T, Song C, Liao X, Long F JBMR Plus. 2024; 8(11):ziae122.

PMID: 39434845 PMC: 11491285. DOI: 10.1093/jbmrpl/ziae122.


Microbiota-bone axis in ageing-related bone diseases.

Fu L, Zhang P, Wang Y, Liu X Front Endocrinol (Lausanne). 2024; 15:1414350.

PMID: 39076510 PMC: 11284018. DOI: 10.3389/fendo.2024.1414350.


Wnt/β-catenin signaling components and mechanisms in bone formation, homeostasis, and disease.

Hu L, Chen W, Qian A, Li Y Bone Res. 2024; 12(1):39.

PMID: 38987555 PMC: 11237130. DOI: 10.1038/s41413-024-00342-8.


References
1.
Yadav V, Balaji S, Suresh P, Liu X, Lu X, Li Z . Pharmacological inhibition of gut-derived serotonin synthesis is a potential bone anabolic treatment for osteoporosis. Nat Med. 2010; 16(3):308-12. PMC: 2836724. DOI: 10.1038/nm.2098. View

2.
Fuccillo M, Joyner A, Fishell G . Morphogen to mitogen: the multiple roles of hedgehog signalling in vertebrate neural development. Nat Rev Neurosci. 2006; 7(10):772-83. DOI: 10.1038/nrn1990. View

3.
Balemans W, Ebeling M, Patel N, Van Hul E, Olson P, Dioszegi M . Increased bone density in sclerosteosis is due to the deficiency of a novel secreted protein (SOST). Hum Mol Genet. 2001; 10(5):537-43. DOI: 10.1093/hmg/10.5.537. View

4.
Alenina N, Kikic D, Todiras M, Mosienko V, Qadri F, Plehm R . Growth retardation and altered autonomic control in mice lacking brain serotonin. Proc Natl Acad Sci U S A. 2009; 106(25):10332-7. PMC: 2700938. DOI: 10.1073/pnas.0810793106. View

5.
Dacquin R, Starbuck M, Schinke T, Karsenty G . Mouse alpha1(I)-collagen promoter is the best known promoter to drive efficient Cre recombinase expression in osteoblast. Dev Dyn. 2002; 224(2):245-51. DOI: 10.1002/dvdy.10100. View