The DOI matches its Crossref record; 32 of the 32 references it cites were found in a registry or an index.
Dentin Matrix Protein 1 Is Predominantly Expressed in Chicken and Rat Osteocytes But Not in Osteoblasts
Open accessAbstract
Although osteocytes are the most abundant cells in bone, little is known about their function, and no specific marker protein for osteocytes has been described. Dentin matrix protein 1 (DMP1) is an acidic phosphoprotein expressed in tooth organ and bone. Our previous work showed that in the chicken, which is not capable of forming tooth, DMP1 messenger RNA (mRNA) is highly expressed in bone by Northern blot analysis. To clarify the significance of DMP1 expression in bone, the expression of DMP1 mRNA and its protein was examined in the chicken and rat. In the chicken, DMP1 mRNA was detected only in bone tissues and was localized in osteocytes and preosteocytes but not in osteoblasts. Similarly, in the rat, DMP1 mRNA was predominantly expressed in osteocytes and preosteocytes in bone matrix but not in osteoblasts located at the bone surface. Antiserum was raised against the peptide from rat DMP1, and the localization of DMP1 was examined by immunohistochemistry. In the development of bone, DMP1 was first detected in newly formed bone matrix after osteoblastic cells had been embedded within it. After the appearance of typical osteocytes, DMP1 was localized in the pericellular bone matrix of osteocytes, including their processes. These data show that DMP1 is a bone matrix protein specifically expressed in osteocytes and preosteocytes and suggest that DMP1 plays a role in bone homeostasis because of its high calcium ion-binding capacity.
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Metadata
- Authors
- Toyosawa, S., Shintani, S., Fujiwara, T., Ooshima, T., Sato, A., Ijuhin, N., & Komori, T.
- Venue
- Journal of Bone and Mineral Research
- Publisher
- Oxford University Press (OUP)
- Published
- 2001-11-01
- Volume
- 16
- Issue
- 11
- Pages
- 2017-2026
- ISSN
- 0884-0431 (ISSN-L)
- 1523-4681
- OpenAlex
- W2088931725
- Cited by
- 287
- References
- 32
- FWCI
- 4.90
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Toyosawa, S., Shintani, S., Fujiwara, T., Ooshima, T., Sato, A., Ijuhin, N., & Komori, T. (2001). Dentin Matrix Protein 1 Is Predominantly Expressed in Chicken and Rat Osteocytes But Not in Osteoblasts. Journal of Bone and Mineral Research. https://doi.org/10.1359/jbmr.2001.16.11.2017
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