PMID- 27813686 OWN - NLM STAT- MEDLINE DCOM- 20170131 LR - 20181202 IS - 1557-7430 (Electronic) IS - 1044-5498 (Linking) VI - 36 IP - 1 DP - 2017 Jan TI - The Telomerase Activity of Selenium-Induced Human Umbilical Cord Mesenchymal Stem Cells Is Associated with Different Levels of c-Myc and p53 Expression. PG - 34-41 LID - 10.1089/dna.2016.3411 [doi] AB - Selenium-as a trace element-is nutritionally essential for humans. It prevents cancerous growth by inhibiting the telomerase activity but the mechanism involved in regulation of telomerase activity in normal telomerase-positive cells remains to be elucidated. Here, we find out whether the effect of sodium selenite and selenomethionine on telomerase activity in human umbilical cord-derived mesenchymal stem cells (hUCMSCs) is associated with different levels of c-Myc and p53 expression. The use of different staining methods including ethidium bromide/acridine orange and DAPI in addition to telomeric repeat amplification protocol assay and real-time PCR indicated that different forms of selenium have opposite impacts on c-Myc and p53 expressions in both hUCMSCs and AGS, a gastric adenocarcinoma cell line, as a positive control. Our findings suggest that the signaling pathways involved in the regulation of telomerase activity in malignant and normal telomerase-positive cell types are somewhat different, at least on the c-Myc and P53 expression levels. FAU - Hosseinzadeh Anvar, Leila AU - Hosseinzadeh Anvar L AD - 1 Research Laboratory for Embryology and Stem Cells, Department of Anatomical Sciences and Pathology, Faculty of Medicine, Ardabil University of Medical Sciences , Ardabil, Iran . AD - 2 Laboratory of Medical Genetics, Imam Khomeini Hospital, Ardabil University of Medical Sciences , Ardabil, Iran . FAU - Hosseini-Asl, Saeid AU - Hosseini-Asl S AD - 2 Laboratory of Medical Genetics, Imam Khomeini Hospital, Ardabil University of Medical Sciences , Ardabil, Iran . FAU - Mohammadzadeh-Vardin, Mohammad AU - Mohammadzadeh-Vardin M AD - 1 Research Laboratory for Embryology and Stem Cells, Department of Anatomical Sciences and Pathology, Faculty of Medicine, Ardabil University of Medical Sciences , Ardabil, Iran . FAU - Sagha, Mohsen AU - Sagha M AD - 1 Research Laboratory for Embryology and Stem Cells, Department of Anatomical Sciences and Pathology, Faculty of Medicine, Ardabil University of Medical Sciences , Ardabil, Iran . LA - eng PT - Journal Article DEP - 20161104 PL - United States TA - DNA Cell Biol JT - DNA and cell biology JID - 9004522 RN - 0 (Proto-Oncogene Proteins c-myc) RN - 0 (RNA, Messenger) RN - 0 (Tumor Suppressor Protein p53) RN - 964MRK2PEL (Selenomethionine) RN - EC 2.7.7.49 (Telomerase) RN - HIW548RQ3W (Sodium Selenite) SB - IM MH - Cell Survival/drug effects MH - Gene Expression Regulation/drug effects MH - Humans MH - Mesenchymal Stem Cells/cytology/*drug effects/metabolism MH - Proto-Oncogene Proteins c-myc/*genetics MH - RNA, Messenger/genetics/metabolism MH - Selenomethionine/*pharmacology MH - Sodium Selenite/*pharmacology MH - Telomerase/*metabolism MH - Tumor Suppressor Protein p53/*genetics MH - Umbilical Cord/*cytology OTO - NOTNLM OT - P53 OT - c-Myc OT - hUCMSCs OT - selenium OT - telomerase activity EDAT- 2016/11/05 06:00 MHDA- 2017/02/01 06:00 CRDT- 2016/11/05 06:00 PHST- 2016/11/05 06:00 [pubmed] PHST- 2017/02/01 06:00 [medline] PHST- 2016/11/05 06:00 [entrez] AID - 10.1089/dna.2016.3411 [doi] PST - ppublish SO - DNA Cell Biol. 2017 Jan;36(1):34-41. doi: 10.1089/dna.2016.3411. Epub 2016 Nov 4.