Institute for Transplantation Diagnostics and Cell Therapeutics, Heinrich Heine University Medical Center, Moorenstrasse 5, Bldg. 14.80, 40225, Düsseldorf, Germany.
Cell Mol Life Sci. 2010 Jan;67(2):295-303. doi: 10.1007/s00018-009-0183-3. Epub 2009 Nov 3.
Human bone marrow-derived mesenchymal stem cells (MSC) home to injured tissues and have regenerative capacity. In this study, we have investigated in vitro the influence of apoptotic and necrotic cell death, thus distinct types of tissue damage, on MSC migration. Concordant with an increased overall motility, MSC migrated towards apoptotic, but not vital or necrotic neuronal and cardiac cells. Hepatocyte growth factor (HGF) was expressed by the apoptotic cells only. MSC, in contrast, revealed expression of the HGF-receptor, c-Met. Blocking HGF bioactivity resulted in significant reduction of MSC migration. Moreover, recombinant HGF attracted MSC in a dose-dependent manner. Thus, apoptosis initiates chemoattraction of MSC via the HGF/c-Met axis, thereby linking tissue damage to the recruitment of cells with regenerative potential.
人骨髓间充质干细胞(MSC)归巢到损伤组织,并具有再生能力。在这项研究中,我们研究了凋亡和坏死细胞死亡(即不同类型的组织损伤)对 MSC 迁移的体外影响。MSC 向凋亡细胞而不是存活或坏死的神经元和心肌细胞迁移,与整体迁移能力增强一致。只有凋亡细胞表达肝细胞生长因子(HGF)。相比之下,MSC 表现出 HGF 受体 c-Met 的表达。阻断 HGF 的生物活性会导致 MSC 迁移显著减少。此外,重组 HGF 以剂量依赖性方式吸引 MSC。因此,凋亡通过 HGF/c-Met 轴启动 MSC 的趋化吸引,从而将组织损伤与具有再生潜能的细胞募集联系起来。