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UCMA, a novel secreted cartilage-specific protein with implications in osteogenesis

Surmann-Schmitt, C; Dietz, U; Kireva, T; Adam, N; Park, J; Tagariello, A; Önnerfjord, Patrik LU ; Heinegård, Dick LU ; Schlotzer-Schrehardt, U and Deutzmann, R, et al. (2008) In Journal of Biological Chemistry 283(11). p.7082-7093
Abstract
Here we report on the structure, expression and function of a novel cartilage-specific gene coding for a 17 kDa small, highly charged and secreted protein that we termed Ucma (Unique Cartilage Matrix Associated protein). The protein is processed by a furin-like protease into an N-terminal peptide of 37 amino acids and a C-terminal fragment (Ucma-C) of 74 amino acids. Ucma is highly conserved between mouse, rat, human, dog, clawed frog, and zebrafish, but has no homology to other known proteins. Remarkable are 1-2 tyrosine sulphate residues per molecule and dense clusters of acidic and basic residues in the C-terminal part. In the developing mouse skeleton Ucma-mRNA is expressed in resting chondrocytes in the distal and peripheral zones of... (More)
Here we report on the structure, expression and function of a novel cartilage-specific gene coding for a 17 kDa small, highly charged and secreted protein that we termed Ucma (Unique Cartilage Matrix Associated protein). The protein is processed by a furin-like protease into an N-terminal peptide of 37 amino acids and a C-terminal fragment (Ucma-C) of 74 amino acids. Ucma is highly conserved between mouse, rat, human, dog, clawed frog, and zebrafish, but has no homology to other known proteins. Remarkable are 1-2 tyrosine sulphate residues per molecule and dense clusters of acidic and basic residues in the C-terminal part. In the developing mouse skeleton Ucma-mRNA is expressed in resting chondrocytes in the distal and peripheral zones of epiphyseal and vertebral cartilage. Ucma is secreted into the extracellular matrix as uncleaved precursor and shows the same restricted distribution pattern in cartilage as Ucma mRNA. In contrast, antibodies prepared against the processed C-terminal fragment located Ucma-C in the entire cartilage matrix, indicating that it either diffuses or is retained until chondrocytes reach hypertrophy. During differentiation of an MC615 chondrocyte subclone in vitro, Ucma expression parallels largely the expression of collagen II, and decreases with maturation towards hypertrophic cells. Recombinant Ucma-C does not affect expression of chondrocyte-specific genes or proliferation of chondrocytes, but interferes with osteogenic differentiation of osteoblast precursors. These findings suggest that Ucma may be involved in the negative control of osteogenic differentiation of osteo-chondrogenic precursor cells in peripheral zones of fetal cartilage and at the cartilage-bone interface. (Less)
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Contribution to journal
publication status
published
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Journal of Biological Chemistry
volume
283
issue
11
pages
7082 - 7093
publisher
ASBMB
external identifiers
  • pmid:18156182
  • wos:000253779600053
  • scopus:43749097899
ISSN
1083-351X
DOI
10.1074/jbc.M702792200
language
English
LU publication?
yes
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b0628784-c673-4d82-91bd-73faed91f7ce (old id 1143220)
date added to LUP
2008-07-28 14:11:20
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2017-07-02 03:43:58
@article{b0628784-c673-4d82-91bd-73faed91f7ce,
  abstract     = {Here we report on the structure, expression and function of a novel cartilage-specific gene coding for a 17 kDa small, highly charged and secreted protein that we termed Ucma (Unique Cartilage Matrix Associated protein). The protein is processed by a furin-like protease into an N-terminal peptide of 37 amino acids and a C-terminal fragment (Ucma-C) of 74 amino acids. Ucma is highly conserved between mouse, rat, human, dog, clawed frog, and zebrafish, but has no homology to other known proteins. Remarkable are 1-2 tyrosine sulphate residues per molecule and dense clusters of acidic and basic residues in the C-terminal part. In the developing mouse skeleton Ucma-mRNA is expressed in resting chondrocytes in the distal and peripheral zones of epiphyseal and vertebral cartilage. Ucma is secreted into the extracellular matrix as uncleaved precursor and shows the same restricted distribution pattern in cartilage as Ucma mRNA. In contrast, antibodies prepared against the processed C-terminal fragment located Ucma-C in the entire cartilage matrix, indicating that it either diffuses or is retained until chondrocytes reach hypertrophy. During differentiation of an MC615 chondrocyte subclone in vitro, Ucma expression parallels largely the expression of collagen II, and decreases with maturation towards hypertrophic cells. Recombinant Ucma-C does not affect expression of chondrocyte-specific genes or proliferation of chondrocytes, but interferes with osteogenic differentiation of osteoblast precursors. These findings suggest that Ucma may be involved in the negative control of osteogenic differentiation of osteo-chondrogenic precursor cells in peripheral zones of fetal cartilage and at the cartilage-bone interface.},
  author       = {Surmann-Schmitt, C and Dietz, U and Kireva, T and Adam, N and Park, J and Tagariello, A and Önnerfjord, Patrik and Heinegård, Dick and Schlotzer-Schrehardt, U and Deutzmann, R and von der Mark, K and Stock, M},
  issn         = {1083-351X},
  language     = {eng},
  number       = {11},
  pages        = {7082--7093},
  publisher    = {ASBMB},
  series       = {Journal of Biological Chemistry},
  title        = {UCMA, a novel secreted cartilage-specific protein with implications in osteogenesis},
  url          = {http://dx.doi.org/10.1074/jbc.M702792200},
  volume       = {283},
  year         = {2008},
}