Intercellular communication via gap junction channels between chondrocytes and bone cells.

Intercellular communication via gap junction channels between chondrocytes and bone cells.
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DOI:
10.1016/j.bbamem.2018.09.009
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发表时间:
2018-12
期刊:
Biochimica et biophysica acta. Biomembranes
影响因子:
--
通讯作者:
Mayan MD
Mayan MD
中科院分区:
其他
文献类型:
--
作者:
Carpintero-Fernandez P;Gago-Fuentes R;Wang HZ;Fonseca E;Caeiro JR;Valiunas V;Brink PR;Mayan MD

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骨、软骨和滑膜之间的细胞间通讯尚不完全清楚,仅归因于物质通过细胞外空间或滑液的扩散。在这项研究中,我们首次发现包括骨细胞、滑膜细胞(SC)和软骨细胞(CH)在内的原代骨细胞(BC)能够建立细胞接触并通过间隙连接(GJ)通道进行耦合,其中以连接蛋白43(Cx43)为主。 Transwell 共培养和质谱鉴定揭示了接触 SC、BC 和 CH 之间必需氨基酸、肽和蛋白质(包括钙连接蛋白、钙网蛋白或 CD44 抗原)的交换。这些结果表明,CH、SC 和 BC 能够建立细胞间连接并通过 GJ 通道进行通信,从而通过有效信号分子和代谢物的直接交换提供选择性信号传导途径。
Cell-to-cell communication between bone, cartilage and the synovial membrane is not fully understood and it is only attributed to the diffusion of substances through the extracellular space or synovial fluid. In this study, we found for the first time that primary bone cells (BCs) including osteocytes, synovial cells (SCs) and chondrocytes (CHs) are able to establish cellular contacts and to couple through gap junction (GJ) channels with connexin43 (Cx43) being dominant. Transwell co-culture and identification by mass spectrometry revealed the exchange of essential amino acids, peptides and proteins including calnexin, calreticulin or CD44 antigen between contacting SCs, BCs and CHs. These results reveal that CHs, SCs and BCs are able to establish intercellular connections and to communicate through GJ channels, which provide a selective signalling route by the direct exchange of potent signalling molecules and metabolites.
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