Effects of Concanavalin A on Chondrocyte Hypertrophy and Matrix Calcification*
Effects of Concanavalin A on Chondrocyte Hypertrophy and Matrix Calcification*
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刀豆球蛋白 A 对软骨细胞肥大和基质钙化的影响*
DOI:
--
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发表时间:
1997
影响因子:
4.8
通讯作者:
Y. Kato
中科院分区:
文献类型:
--
作者:
Weiqun Yan;Haiou Pan;H. Ishida;K. Nakashima;F. Suzuki;M. Nishimura;A. Jikko;R. Oda;Y. Kato
Resting chondrocytes do not usually undergo differentiation to the hypertrophic stage and calcification. However, incubating these cells with concanavalin A resulted in 10-100-fold increases in alkaline phosphatase activity, binding of 1,25(OH)2-vitamin D3, type X collagen synthesis, 45Ca incorporation into insoluble material, and calcium content. On the other hand, other lectins tested (including wheat germ agglutinin, lentil lectin, pea lectin, phytohemagglutinin-L, and phytohemagglutinin-E) marginally affected alkaline phosphatase activity, although they activate lymphocytes. Methylmannoside reversed the effect of concanavalin A on alkaline phosphatase within 48 h. Concanavalin A did not increase alkaline phosphatase activity in articular chondrocyte cultures. In resting chondrocyte cultures, succinyl concanavalin A was as potent as concanavalin A in increasing alkaline phosphatase activity, the incorporation of [35S]sulfate, D-[3H]glucosamine, and [3H]serine into proteoglycans, and the incorporation of [3H]serine into protein, although concanavalin A, but not succinyl concanavalin A, induced a rapid change in the shape of the cells from flat to spherical. These findings suggest that concanavalin A induces a switch from the resting, to the growth-plate stage, and that this action of concanavalin A is not secondary to changes in the cytoskeleton. Chondrocytes exposed to concanavalin A may be useful as a novel model of endochondral bone formation.
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DOI:
10.1073/pnas.89.12.5398
发表时间:
1992-06-15
影响因子:
11.1
作者:
SCOTT, JK;LOGANATHAN, D;GOLDSTEIN, IJ
通讯作者:
GOLDSTEIN, IJ
DOI:
--
发表时间:
1989
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Wu,LN;Sauer,GR;Genge,BR;Wuthier,RE
通讯作者:
Wuthier,RE
影响因子:
10.5
作者:
KARAPLIS, AC;LUZ, A;MULLIGAN, RC
通讯作者:
MULLIGAN, RC
DOI:
--
发表时间:
1986
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Einspahr,H;Parks,EH;Suguna,K;Subramanian,E;Suddath,FL
通讯作者:
Suddath,FL
DOI:
--
发表时间:
1989
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Leboy,PS;Vaias,L;Uschmann,B;Golub,E;Adams,SL;Pacifici,M
通讯作者:
Pacifici,M