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
Y. Kato
中科院分区:
生物学2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

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静止的软骨细胞通常不会分化到肥大阶段和钙化。然而,用伴刀豆球蛋白A孵育这些细胞导致碱性磷酸酶活性、1,25(OH)2-维生素D3结合、X型胶原合成、45 Ca掺入不溶性物质和钙含量增加10-100倍。另一方面,其他凝集素测试(包括小麦胚芽凝集素,扁豆凝集素,豌豆凝集素,植物凝集素-L,和植物凝集素-E)轻微影响碱性磷酸酶活性,虽然他们激活淋巴细胞。甲基甘露糖苷在48 h内可逆转刀豆球蛋白A对碱性磷酸酶的作用。伴刀豆球蛋白A没有增加关节软骨细胞培养物的碱性磷酸酶活性。在静息软骨细胞培养中,琥珀酰伴刀豆球蛋白A在增加碱性磷酸酶活性、将[35 S]硫酸盐、D-[3 H]葡糖胺和[3 H]丝氨酸掺入蛋白聚糖以及将[3 H]丝氨酸掺入蛋白质方面与伴刀豆球蛋白A一样有效,尽管伴刀豆球蛋白A而不是琥珀酰伴刀豆球蛋白A诱导细胞形状从扁平到球形的快速变化。这些研究结果表明,伴刀豆球蛋白A诱导开关从休息,生长板阶段,和这种行动的伴刀豆球蛋白A是不是次要的细胞骨架的变化。软骨细胞暴露于刀豆球蛋白A可能是有用的作为一种新的模型的软骨内骨形成。
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.
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
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发表时间: 1994-02-01
影响因子: 10.5
作者:
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通讯作者: MULLIGAN, RC
豌豆凝集素的晶体结构,分辨率为 3.0-A。
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
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抗坏血酸可诱导培养的鸡软骨细胞中的碱性磷酸酶、X 型胶原蛋白和钙沉积。
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