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In vivo immune interactions of multipotent stromal cells underlie their long-lasting pain-relieving effect
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In vivo immune interactions of multipotent stromal cells underlie their long-lasting pain-relieving effect
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In vivo immune interactions of multipotent stromal cells underlie their long-lasting pain-relieving effect
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Journal Article
In vivo immune interactions of multipotent stromal cells underlie their long-lasting pain-relieving effect
2017
Overview
Systemic infusion of bone marrow stromal cells (BMSCs), a major type of multipotent stromal cells, produces pain relief (antihyperalgesia) that lasts for months. However, studies have shown that the majority of BMSCs are trapped in the lungs immediately after intravenous infusion and their survival time in the host is inconsistent with their lengthy antihyperalgesia. Here we show that long-lasting antihyperalgesia produced by BMSCs required their chemotactic factors such as CCL4 and CCR2, the integrations with the monocytes/macrophages population, and BMSC-induced monocyte CXCL1. The activation of central mu-opioid receptors related to CXCL1-CXCR2 signaling plays an important role in BMSC-produced antihyperalgesia. Our findings suggest that the maintenance of antihypergesia can be achieved by immune regulation without actual engraftment of BMSCs. In the capacity of therapeutic use of BMSCs other than structural repair and replacement, more attention should be directed to their role as immune modulators and subsequent alterations in the immune system.
