Low-level shear stress induces human mesenchymal stem cell migration through the SDF-1/CXCR4 axis via MAPK signaling pathways

Lin Yuan, Naoya Sakamoto, Guanbin Song, Masaaki Sato

研究成果: Article査読

58 被引用数 (Scopus)


Mesenchymal stem cells (MSCs) are able to home and migrate into damaged tissues and are thus, considered an optimal therapeutic strategy for clinical use. We previously demonstrated that higher shear stress (>2 Pa) hindered human MSC (hMSC) migration, whereas lower shear stress (0.2 Pa) induced cell migration through mitogen-activated protein kinase (MAPK) pathways. Here the mechanisms underlying shear stress-induced hMSC migration have been studied further. An MSC monolayer was mechanically wounded and subsequently exposed to low-level shear stress of 0.2 Pa. Image analysis was performed to quantify cell migration speeds under both flow and static conditions. hMSCs along both upstream- and downstream edges of the wound migrated at a similar speed to cover the wounded area under static conditions, whereas shear stress induced cells along the downstream edge of the wound to migrate significantly faster than those along the upstream edge. We also found that shear stress upregulated the secretion of stromal-derived factor-1 (SDF-1), which stimulated its receptor CXCR4 expression in hMSCs until the cells covered the wounded area. A CXCR4 antagonist repressed both cell migration and activation of c-Jun N-terminal kinase (JNK) and p38 MAPK but did not affect extracellular signal-regulated kinase 1/2 (ERK1/2) phosphorylation. When MAPK activation in upstream- and downstream hMSCs was evaluated separately, ERK1/2 was activated earlier in downstream than in upstream cells. These results indicate that the SDF-1/CXCR4 axis mediates shear stress-induced hMSC migration through JNK and p38 MAPK pathways and that the difference in migration speeds between upstream- and downstream cells may be due to ERK1/2 activation.

ジャーナルStem Cells and Development
出版ステータスPublished - 2013 9月 1

ASJC Scopus subject areas

  • 血液学
  • 発生生物学
  • 細胞生物学


「Low-level shear stress induces human mesenchymal stem cell migration through the SDF-1/CXCR4 axis via MAPK signaling pathways」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。