@article{oai:nagasaki-u.repo.nii.ac.jp:00002025, author = {Saijo, Hiroto and Suzuki, Keiji and Yoshimoto, Hiroshi and Imamura, Yoshinobu and Yamashita, Shunichi and Tanaka, Katsumi}, issue = {6}, journal = {Plastic and Reconstructive Surgery}, month = {Jun}, note = {BACKGROUND: There is currently no reliable treatment for secondary lymphedema caused by lymph node dissection or radiotherapy; however, stem cell-based regenerative medicine is emerging as a promising remedy for such complications. The purpose of this study was to examine the effects of adipose-derived stem cells on lymphangiogenesis involving human dermal lymphatic endothelial cells exposed to ionizing radiation. METHODS: Proliferation, migration, and tube formation were analyzed in human dermal lymphatic endothelial cells that were co-cultured with adipose-derived stem cells or cultured in adipose-derived stem cell-conditioned medium. The levels of lymphangiogenic factors secreted from adipose-derived stem cells were analyzed by enzyme-linked immunosorbent assays and Western blotting. RESULTS: Co-culturing with adipose-derived stem cells and the use of adipose-derived stem cell-conditioned medium both significantly promoted proliferation, migration, and tube formation in nonirradiated human dermal lymphatic endothelial cells. The authors also found that irradiated adipose-derived stem cells had similar alleviative effects on irradiated human dermal lymphatic endothelial cells. Enzyme-linked immunosorbent assays and Western blotting analysis revealed that irradiating adipose-derived stem cells increased their secretion of basic fibroblast growth factor in a dose-dependent manner, whereas it caused no detectable change in their secretion of vascular endothelial growth factor A or C, or hepatocyte growth factor. CONCLUSIONS: These results demonstrated that factors secreted by adipose-derived stem cells contribute to the promotion of lymphangiogenesis in irradiated human dermal lymphatic endothelial cells. The authors' findings also suggest that radiation potentiates the paracrine effects of adipose-derived stem cells by stimulating basic fibroblast growth factor protein expression., Plastic and Reconstructive Surgery, 143(6), pp.1189e-1200e: 2019}, pages = {1189e--1200e}, title = {Paracrine Effects of Adipose-Derived Stem Cells Promote Lymphangiogenesis in Irradiated Lymphatic Endothelial Cells}, volume = {143}, year = {2019} }