Adipose-derived stem cells promote proliferation, migration, and tube formation of lymphatic endothelial cells in vitro by secreting lymphangiogenic factors.

Abstract	Adipose-derived stem cells (ADSCs) are a promising new therapeutic modality for several diseases and have been applied to various clinical fields because of their multidifferentiation potential and capacity for growth-factor secretion. Recently, 2 in vivo studies showed ADSCs to have potential applications in lymphedema therapy. However, it remains unclear whether ADSCs have direct effects on lymphatic endothelial cells (LECs). In this study, human LECs were treated with murine ADSC-derived conditioned media. Changes in LEC proliferation, migration, and tube formation were assessed by WST-8 assay, transwell chamber assay, and Matrigel-based tube formation assay, respectively, with recombinant human vascular endothelial growth factor-C used as a positive control. Additionally, the expression of several lymphangiogenic factors in ADSCs was examined by quantitative reverse transcription-polymerase chain reaction and enzyme-linked immunosorbent assay. Factors secreted by ADSCs induced LEC proliferation, migration, and tube formation more potently than recombinant human vascular endothelial growth factor-C. We confirmed by quantitative reverse transcription-polymerase chain reaction and enzyme-linked immunosorbent assay that some of the lymphangiogenic factors of ADSCs were dramatically up-regulated under serum-starved conditions. These data indicate that ADSCs could directly contribute to lymphangiogenesis via secretory factors in vitro and may thus provide a therapeutic modality for patients with lymphedema.
Authors	Kohsuke Takeda, Yoshihiro Sowa, Kenichi Nishino, Kyoko Itoh, Shinji Fushiki
Journal	Annals of plastic surgery (Ann Plast Surg) Vol. 74 Issue 6 Pg. 728-36 (Jun 2015) ISSN: 1536-3708 [Electronic] United States
PMID	24401810 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
Chemical References	Biomarkers Culture Media, Conditioned
Topics	Animals Biomarkers (metabolism) Cell Movement Cell Proliferation Culture Media, Conditioned Endothelial Cells (physiology) Enzyme-Linked Immunosorbent Assay Humans Lymphangiogenesis (physiology) Male Mesenchymal Stem Cells (metabolism, physiology) Mice Mice, Inbred C57BL Reverse Transcriptase Polymerase Chain Reaction Subcutaneous Fat (cytology) Up-Regulation

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