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Cited by 271

The DOI matches its Crossref record; 3 of the 3 references it cites were found in a registry or an index.

Insulin receptor substrate-1 in osteoblast is indispensable for maintaining bone turnover

Open access
Ogata, Naoshi, Chikazu, Daichi, Kubota, Naoto, Terauchi, Yasuo, Tobe, Kazuyuki, Azuma, Yoshiaki, Ohta, Tomohiro, Kadowaki, Takashi, Nakamura, Kozo, Kawaguchi, Hiroshi·2000·Journal of Clinical Investigation

Abstract

Insulin receptor substrates (IRS-1 and -2) are essential for intracellular signaling by insulin and IGF-I, anabolic regulators of bone metabolism. Mice lacking the IRS-1 gene IRS-1(-/-) showed severe osteopenia with low bone turnover. IRS-1 was expressed in osteoblasts, but not in osteoclasts, of wild-type (WT) mice. IRS-1(-/-) osteoblasts treated with insulin or IGF-I failed to induce tyrosine phosphorylation of cellular proteins, and they showed reduced proliferation and differentiation. Osteoclastogenesis in the coculture of hemopoietic cells and osteoblasts depended on IRS-1 expression in osteoblasts and could not be rescued by IRS-1 expression in hemopoietic cells in the presence of not only IGF-I but also 1,25(OH)(2)D(3). In addition, osteoclast differentiation factor (RANKL/ODF) was not induced by these factors in IRS-1(-/-) osteoblasts. We conclude that IRS-1 deficiency in osteoblasts impairs osteoblast proliferation, differentiation, and support of osteoclastogenesis, resulting in low-turnover osteopenia. Osteoblastic IRS-1 is essential for maintaining bone turnover, because it mediates signaling by IGF-I and insulin and, we propose, also by other factors, such as 1,25(OH)(2)D(3).

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Metadata

Authors
Ogata, N., Chikazu, D., Kubota, N., Terauchi, Y., Tobe, K., Azuma, Y., Ohta, T., Kadowaki, T., Nakamura, K., & Kawaguchi, H.
Venue
Journal of Clinical Investigation
Published
2000-04-01
Volume
105
Issue
7
Pages
935-943
ISSN
0021-9738 (ISSN-L)
OpenAlex
W2117517020
Cited by
271
References
3
FWCI
3.49
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Insulin receptor substrate-1 in osteoblast is indispensable for maintaining bone turnover. https://app.cochat.ai/papers/10.1172/jci9017
The paper
Ogata, N., Chikazu, D., Kubota, N., Terauchi, Y., Tobe, K., Azuma, Y., Ohta, T., Kadowaki, T., Nakamura, K., & Kawaguchi, H. (2000). Insulin receptor substrate-1 in osteoblast is indispensable for maintaining bone turnover. Journal of Clinical Investigation. https://doi.org/10.1172/jci9017

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