PMID- 26824459 OWN - NLM STAT- MEDLINE DCOM- 20161025 LR - 20190212 IS - 1421-9778 (Electronic) IS - 1015-8987 (Linking) VI - 38 IP - 1 DP - 2016 TI - The Effects of Indoxyl Sulfate on Human Umbilical Cord-Derived Mesenchymal Stem Cells In Vitro. PG - 401-14 LID - 10.1159/000438639 [doi] AB - BACKGROUND/AIMS: Indoxyl sulfate, an important protein-bound uremic toxin, can damage stem cells, thus hampering stem cell-based regenerative medicine approaches targeting chronic kidney diseases (CKD). Human umbilical cord-derived mesenchymal stem cells (hUC-MSCs) are thought to have promising clinical application because of their high proliferative potential and ease of isolation than MSCs from other sources. In the present study, we aimed to determine the harmful effects of indoxyl sulfate on the phenotype and functional potential of hUC-MSCs in vitro. METHODS: The toxicity and cell viability was examined by Trypan blue exclusion and MTT assay. The cellular surface markers and the percentage of apoptotic cells by Annexin-V/PI staining were analyzed by flow cytometry. Proliferation was evaluated based on cell number counting and Ki-67 immunostaining. Cell senescence was measured using senescence-associated beta-Galactosidase activity. The ability to stimulate the development of CD4+CD25+FoxP3+ regulatory T cells was assessed by incubating hUC-MSCs with peripheral blood mononuclear cells from the healthy volunteers. RESULTS: Our results demonstrated that the immunophenotype of hUC-MSCs was not affected by indoxyl sulfate flow cytometry. However, a significant decrease in cell numbers and fraction of Ki-67 positive proliferating cells, along with a significant increase in cellular senescence were detected in hUC-MSCs after exposure to indoxyl sulfate. Additionally, their ability to stimulate CD4+CD25+FoxP3+ regulatory T cell production was compromised when hUC-MSCs were pretreated with indoxyl sulfate. CONCLUSION: Taken together, our study clearly demonstrated that the molecular alterations and functional incompetence in hUC-MSCs under the challenge of indoxyl sulfate in vitro. CI - (c) 2016 The Author(s) Published by S. Karger AG, Basel. FAU - Wang, Wei AU - Wang W AD - The Kidney Disease Research Center, Jingdong Yumei Kidney Disease Hospital, Beijing, China. FAU - Liu, Xueyong AU - Liu X FAU - Wang, Wei AU - Wang W FAU - Li, Jinghua AU - Li J FAU - Li, Yuanyuan AU - Li Y FAU - Li, Liping AU - Li L FAU - Wang, Shaohua AU - Wang S FAU - Zhang, Jianchun AU - Zhang J FAU - Zhang, Youkang AU - Zhang Y FAU - Huang, Haichang AU - Huang H LA - eng PT - Journal Article DEP - 20160129 PL - Germany TA - Cell Physiol Biochem JT - Cellular physiology and biochemistry : international journal of experimental cellular physiology, biochemistry, and pharmacology JID - 9113221 RN - 0 (Antigens, CD) RN - 0 (Ki-67 Antigen) RN - EC 3.2.1.23 (beta-Galactosidase) RN - N187WK1Y1J (Indican) SB - IM MH - Antigens, CD/metabolism MH - Cell Proliferation/drug effects MH - Cell Survival/drug effects MH - Cells, Cultured MH - Cellular Senescence/drug effects MH - Humans MH - Immunophenotyping MH - Indican/*toxicity MH - Ki-67 Antigen/metabolism MH - Mesenchymal Stem Cells/cytology/*drug effects/metabolism MH - T-Lymphocytes, Regulatory/cytology/immunology/metabolism MH - Umbilical Cord/*cytology MH - beta-Galactosidase/metabolism EDAT- 2016/01/30 06:00 MHDA- 2016/10/26 06:00 CRDT- 2016/01/30 06:00 PHST- 2015/12/07 00:00 [accepted] PHST- 2016/01/30 06:00 [entrez] PHST- 2016/01/30 06:00 [pubmed] PHST- 2016/10/26 06:00 [medline] AID - 000438639 [pii] AID - 10.1159/000438639 [doi] PST - ppublish SO - Cell Physiol Biochem. 2016;38(1):401-14. doi: 10.1159/000438639. Epub 2016 Jan 29.