Cited by 730Bone Metabolism and DiseasesBone health and osteoporosis researchBone and Dental Protein Studies

Osteoclasts: What Do They Do and How Do They Do It?

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Teitelbaum, Steven L.·2007·The American Journal of Pathology

Abstract

As Americans live longer, degenerative skeletal diseases, such as osteoporosis, become increasingly prevalent. Regardless of cause, osteoporosis reflects a relative enhancement of osteoclast activity. Thus, this unique bone resorptive cell is a prominent therapeutic target. A number of key observations provide insights into the mechanisms by which precursors commit to the osteoclast phenotype and how the mature cell degrades bone. The osteoclast is a member of the monocyte/macrophage family that differentiates under the aegis of two critical cytokines, namely RANK ligand and M-CSF. Tumor necrosis factor (TNF)-alpha also promotes osteoclastogenesis, particularly in states of inflammatory osteolysis such as that attending rheumatoid arthritis. Once differentiated, the osteoclast forms an intimate relationship with the bone surface via the alphavbeta3 integrin, which transmits matrix-derived, cytoskeleton-organizing, signals. These integrin-transmitted signals include activation of the associated proteins, c-src, syk, Vav3, and Rho GTPases. The organized cytoskeleton generates an isolated microenvironment between the cell's plasma membrane and the bone surface in which matrix mineral is mobilized by the acidic milieu and organic matrix is degraded by the lysosomal protease, cathepsin K. This review focuses on these and other molecules that mediate osteoclast differentiation or function and thus serve as candidate anti-osteoporosis therapeutic targets.

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Crossref · 10.2353/ajpath.2007.060834

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  1. Fuller K, Murphy C, Kirstein B, Fox SW, Chambers TJ: TNF␣ potently Osteoclasts in Health and Disease 433 AJP February 2007, Vol. 170, No. 2
  2. Abu-Amer Y, Ross FP, Schlesinger P, Tondravi MM, Teitelbaum SL: Substrate recognition by osteoclast precursors induces s-crc/micro- tubule association. J Cell Biol 1997, 137:247-258
  3. Zhao H, Kitaura H, Sands MS, Ross FP, Teitelbaum SL, Novack DV: Critical role of beta3 integrin in experimental postmenopausal osteo- porosis. J Bone Miner Res 2005, 20:2116 -2123
  4. Aubin JE: Osteoprogenitor cell frequency in rat bone marrow stromal populations: role for heterotypic cell-cell interactions in osteoblast differentiation. J Cell Biochem 1999, 72:396 -410

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Authors
Teitelbaum, S. L.
Affiliations
Washington University in St. Louis (US)
Corresponding author
Teitelbaum, Steven L.
Venue
The American Journal of Pathology
Publisher
Elsevier BV
Published
2007-02
Volume
170
Issue
2
Pages
427-435
ISSN
0002-9440 (ISSN-L)
OpenAlex
W2057907407
Cited by
730
References
89
Citations by year
2026: 20 · 2025: 25 · 2024: 19 · 2023: 31 · 2022: 41 · 2021: 43 · 2020: 33 · 2019: 42 · 2018: 35 · 2017: 38 · 2016: 53 · 2015: 45 · 2014: 29 · 2013: 38 · 2012: 40
FWCI
19.06
Type
journal article
Language
en
Open access
Locations
  • American Journal Of Pathology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • American Society for Investigative Pathology
  • National Institutes of Health (AR046523)
  • National Institute of Arthritis and Musculoskeletal and Skin Diseases (AR 048853, AR 032788, R01AR032788, R37AR046523, AR046523, R01AR048853, R01AR046523)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bone Metabolism and Diseases
  • Health Sciences › Medicine › Orthopedics and Sports Medicine › Bone health and osteoporosis research
  • Health Sciences › Medicine › Rheumatology › Bone and Dental Protein Studies
Keywords
osteoclasts, osteoclastogenesis, osteoporosis, bone resorption, RANK ligand, macrophage colony-stimulating factor, TNF-α, integrin αvβ3, cytoskeleton, Rho GTPases, cathepsin K, lysosomal proteolysis, osteolysis, rheumatoid arthritis
MeSH terms
Aging, Arthritis, Rheumatoid, Cell Differentiation, Cytoskeleton, Extracellular Matrix, Humans, Inflammation, Osteoclasts, Osteolysis, Osteoporosis, Peptide Hydrolases, Protein Kinases, Tumor Necrosis Factor-alpha, Signal Transduction, Macrophage Colony-Stimulating Factor, Receptors, Tumor Necrosis Factor, RANK Ligand

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