Intrinsic mineralization defect in Hyp mouse osteoblasts.
Intrinsic mineralization defect in Hyp mouse osteoblasts.
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Hyp 小鼠成骨细胞的内在矿化缺陷。
DOI:
10.1152/ajpendo.1998.275.4.e700
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发表时间:
1998
期刊:
影响因子:
--
通讯作者:
Quarles,LD
中科院分区:
文献类型:
--
作者:
Xiao,ZS;Crenshaw,M;Guo,R;Nesbitt,T;Drezner,MK;Quarles,LD
X-linked hypophosphatemia (XLH) is caused by inactivating mutations of PEX, an endopeptidase of uncertain function. This defect is shared byHypmice, the murine homologue of the human disease, in which a 3′Pexdeletion has been documented. In the present study, we report that immortalized osteoblasts derived from the simian virus 40 (SV40) transgenicHypmouse (TMOb-Hyp) have an impaired capacity to mineralize extracellular matrix in vitro. Compared with immortalized osteoblasts from the SV40 transgenic normal mouse (TMOb-Nl), osteoblast cultures from the SV40Hypmouse exhibit diminished45Ca accumulation into extracellular matrix (37 ± 6 vs. 1,484 ± 68 counts ⋅ min−1⋅ μg protein−1) and reduced formation of mineralization nodules. Moreover, in coculture experiments, we found evidence that osteoblasts from the SV40Hypmouse produce a diffusible factor that blocks mineralization of extracellular matrix in normal osteoblasts. Our findings indicate that abnormal PEX in osteoblasts is associated with the accumulation of a factor(s) that inhibits mineralization of extracellular matrix in vitro.
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影响因子:
--
作者:
R. Kumar
通讯作者:
R. Kumar
影响因子:
4.8
作者:
Gundberg,CM;Clough,ME;Carpenter,TO
通讯作者:
Carpenter,TO
DOI:
10.1006/bbrc.1997.6153
发表时间:
1997-02-24
影响因子:
3.1
作者:
Grieff, M;Mumm, S;Schlessinger, D
通讯作者:
Schlessinger, D
影响因子:
6.2
作者:
H. Tsuji;C. Cawthorn;B. Ecarot
通讯作者:
B. Ecarot
影响因子:
6.2
作者:
B. Ecarot;F. Glorieux;M. Desbarats;R. Travers;L. Labelle
通讯作者:
L. Labelle