PMID- 27097372 OWN - NLM STAT- MEDLINE DCOM- 20170106 LR - 20211203 IS - 1551-4005 (Electronic) IS - 1538-4101 (Print) IS - 1551-4005 (Linking) VI - 15 IP - 8 DP - 2016 TI - microRNA-496 - A new, potentially aging-relevant regulator of mTOR. PG - 1108-16 LID - 10.1080/15384101.2016.1158360 [doi] AB - Recent findings strongly support a role for small regulatory RNAs in the regulation of human lifespan yet little information exists about the precise underlying mechanisms. Although extensive studies on model organisms have indicated that reduced activity of the nutrient response pathway, for example as a result of dietary restriction, can extend lifespan through the suppression of the protein kinase mechanistic target of rapamycin (mTOR), it still is subject of debate whether this mechanism is operative in humans as well. Here, we present findings indicating that human microRNA (miR)-496 targets 2 sites within the human mTOR 3'UTR. Coexpression of miR-496 with different fusion transcripts, consisting of the luciferase transcript and either wild-type mTOR 3'UTR or mTOR 3'UTR transcript with the miR-496 binding sites singly or combined mutated, confirmed this prediction and revealed cooperativity between the 2 binding sites. miR-496 reduced the mTOR protein level in HeLa-K cells, and the levels of miR-496 and mTOR protein were inversely correlated in Peripheral Blood Mononuclear Cells (PBMC), with old individuals (n = 40) harbouring high levels of miR-496 relative to young individuals (n = 40). Together, these findings point to the possibility that miR-496 is involved in the regulation of human aging through the control of mTOR. FAU - Rubie, Claudia AU - Rubie C AD - a Department of General-, Visceral-, Vascular- and Pediatric Surgery , University of Saarland Medical Center , Homburg/Saar , Germany. FAU - Kolsch, Kathrin AU - Kolsch K AD - a Department of General-, Visceral-, Vascular- and Pediatric Surgery , University of Saarland Medical Center , Homburg/Saar , Germany. FAU - Halajda, Beata AU - Halajda B AD - a Department of General-, Visceral-, Vascular- and Pediatric Surgery , University of Saarland Medical Center , Homburg/Saar , Germany. FAU - Eichler, Hermann AU - Eichler H AD - b Institute of Clinical Haemostaseology and Transfusion Medicine, University of Saarland Medical Center , Homburg/Saar , Germany. FAU - Wagenpfeil, Stefan AU - Wagenpfeil S AD - c Institute of Medical Biometrics, Epidemiology, and Medical Informatics (IMBEI), University of Saarland Medical Center , Homburg/Saar , Germany. FAU - Roemer, Klaus AU - Roemer K AD - d Jose Carreras Research Center, University of Saarland Medical Center , Homburg/Saar , Germany. FAU - Glanemann, Matthias AU - Glanemann M AD - a Department of General-, Visceral-, Vascular- and Pediatric Surgery , University of Saarland Medical Center , Homburg/Saar , Germany. LA - eng PT - Journal Article PL - United States TA - Cell Cycle JT - Cell cycle (Georgetown, Tex.) JID - 101137841 RN - 0 (3' Untranslated Regions) RN - 0 (MIRN496 microRNA, human) RN - 0 (MicroRNAs) RN - 0 (Multiprotein Complexes) RN - 0 (RNA, Messenger) RN - EC 1.13.12.- (Luciferases) RN - EC 2.7.1.1 (MTOR protein, human) RN - EC 2.7.11.1 (Mechanistic Target of Rapamycin Complex 1) RN - EC 2.7.11.1 (Ribosomal Protein S6 Kinases, 70-kDa) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) SB - IM MH - 3' Untranslated Regions/genetics MH - Adult MH - Aged MH - Aged, 80 and over MH - Aging/*genetics MH - Base Sequence MH - Blood Donors MH - Down-Regulation/genetics MH - Female MH - HeLa Cells MH - Healthy Volunteers MH - Humans MH - Leukocytes, Mononuclear/metabolism MH - Luciferases/metabolism MH - Male MH - Mechanistic Target of Rapamycin Complex 1 MH - MicroRNAs/genetics/*metabolism MH - Middle Aged MH - Multiprotein Complexes/metabolism MH - Mutagenesis, Site-Directed MH - Phosphorylation MH - RNA, Messenger/genetics/metabolism MH - Ribosomal Protein S6 Kinases, 70-kDa/metabolism MH - Signal Transduction/genetics MH - TOR Serine-Threonine Kinases/genetics/*metabolism MH - Young Adult PMC - PMC4889276 OTO - NOTNLM OT - Human aging OT - PBMC OT - gene regulation OT - mTOR OT - microRNA EDAT- 2016/04/21 06:00 MHDA- 2017/01/07 06:00 PMCR- 2017/04/20 CRDT- 2016/04/21 06:00 PHST- 2016/04/21 06:00 [entrez] PHST- 2016/04/21 06:00 [pubmed] PHST- 2017/01/07 06:00 [medline] PHST- 2017/04/20 00:00 [pmc-release] AID - 1158360 [pii] AID - 10.1080/15384101.2016.1158360 [doi] PST - ppublish SO - Cell Cycle. 2016;15(8):1108-16. doi: 10.1080/15384101.2016.1158360.