The utility of human fallopian tube mucosa as a novel source of multipotent stem cells for the treatment of autologous reproductive tract injury
Fallopian tube, which is normally discarded in surgical procedures, is proved to be a source of mesenchymal stem cells with increasing evidence; however, fallopian tube mucosa, which can be acquired via non-invasive procedures, is a previously unknown source ofmesenchymal stem cells. In the present study we explored the existence of MSCs in the human fallopian tube mucosa and we also compared multipotent stem cells derived from fallopian tubes and fallopian tube mucosa according to their biological characteristics and therapeutic potential for treatment of autologous reproductive tract injury.
Cells isolated from human fallopian tubes and fallopian tube mucosa were expanded and characterised by flow cytometry. The proliferative capacity of both cell types was measured by performing colony-forming unit-fibroblast and CCK-8 assays. Both cell types underwent in vitro adipogenic- chondrogenic- and osteogenic- differentiation. The expression of osteocyte-, adipocyte- and chondrocyte-related genes in the differentiated cell lineages was assessed by RT-PCR. The secretion of growth factors and immunomodulatory cytokines by both cell types were measured by enzyme-linked immunosorbent assays.
We found that MSCs are existed in the fallopian tube mucosa. The comparison between human fallopian tube mesenchymal stem cells(hFTMSCs) and human fallopian tube mesenchymal stem cells (hFMMSCs) showed that hFTMSCs had a stronger proliferative capacity and shorter duplication time than hFMMSCs. Both cell types could be differentiated into adipocytes, osteoblasts or chondrocytes in vitro. Real-time PCR analysis demonstrated that hFTMSCs displayed increased expression of osteogenic-specific genes compared with hFMMSCs but the two types ofcells showed no significant increase in the mRNA expression of adipogenic-specific or chondrogenic-specific genes. hFMMSCs and hFTMSCs robustly produced a variety of growth factors and immunomodulatory cytokines.
Human fallopian tube mucosa is a novel source of multipotent cells. hFMMSCs demonstrated stronger proliferative capacity and superior secretion of growth factors and immunomodulatory cytokines than hFTMSCs, which make them a better source of stem cells for the treatment of autologous reproductive tract injury. Compared to fallopian tube, Fallopian tube mucosa have a more wide-ranging sources and applications and it can realize autologous transplantation.