PMID- 27030515 OWN - NLM STAT- MEDLINE DCOM- 20170602 LR - 20220727 IS - 1365-2141 (Electronic) IS - 0007-1048 (Print) IS - 0007-1048 (Linking) VI - 174 IP - 3 DP - 2016 Aug TI - mTOR Inhibition improves anaemia and reduces organ damage in a murine model of sickle cell disease. PG - 461-9 LID - 10.1111/bjh.14057 [doi] AB - Mechanistic target of rapamycin (mTOR) has been shown to play an important role in red blood cell physiology, with inhibition of mTOR signalling leading to alterations in erythropoiesis. To determine if mTOR inhibition would improve anaemia in sickle cell disease (SCD), mice with SCD were treated with the dual mTORC1/2 inhibitor, INK128. One week after daily oral drug treatment, erythrocyte count, haemoglobin, and haematocrit were all significantly increased while reticulocyte counts were reduced. These parameters remained stable during 3 weeks of treatment. Similar effects were observed following oral treatment with the mTORC1 inhibitor, sirolimus. Sirolimus treatment prolonged the lifespan of sickle cell erythrocytes in circulation, reduced spleen size, and reduced renal and hepatic iron accumulation in SCD mice. Following middle cerebral artery occlusion, stroke size was reduced in SCD mice treated with sirolimus. In conclusion, mTOR inhibition is protective against anaemia and organ damage in a murine model of SCD. CI - (c) 2016 John Wiley & Sons Ltd. FAU - Wang, Jintao AU - Wang J AD - Department of Internal Medicine, University of Michigan, Cardiovascular Research Center, Ann Arbor, MI, USA. FAU - Tran, Jennifer AU - Tran J AD - Department of Pediatrics, University of Michigan, Ann Arbor, MI, USA. FAU - Wang, Hui AU - Wang H AD - Department of Internal Medicine, University of Michigan, Cardiovascular Research Center, Ann Arbor, MI, USA. FAU - Guo, Chiao AU - Guo C AD - Department of Internal Medicine, University of Michigan, Cardiovascular Research Center, Ann Arbor, MI, USA. FAU - Harro, David AU - Harro D AD - Chemical Pathology, University of Michigan, Ann Arbor, MI, USA. FAU - Campbell, Andrew D AU - Campbell AD AD - Department of Pediatrics, University of Michigan, Ann Arbor, MI, USA. FAU - Eitzman, Daniel T AU - Eitzman DT AD - Department of Internal Medicine, University of Michigan, Cardiovascular Research Center, Ann Arbor, MI, USA. LA - eng GR - I01 BX002776/BX/BLRD VA/United States GR - R01 HL073150/HL/NHLBI NIH HHS/United States GR - R01 HL088419/HL/NHLBI NIH HHS/United States PT - Journal Article DEP - 20160331 PL - England TA - Br J Haematol JT - British journal of haematology JID - 0372544 RN - 0 (Benzoxazoles) RN - 0 (Hemoglobins) RN - 0 (Pyrimidines) RN - EC 2.7.1.1 (mTOR protein, mouse) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) RN - JGH0DF1U03 (sapanisertib) RN - W36ZG6FT64 (Sirolimus) SB - IM MH - Anemia/prevention & control MH - Anemia, Sickle Cell/complications/*drug therapy MH - Animals MH - Benzoxazoles/administration & dosage/*pharmacology MH - Disease Models, Animal MH - Erythrocytes/drug effects MH - Hematocrit MH - Hemoglobins MH - Mice MH - Pyrimidines/administration & dosage/*pharmacology MH - Sirolimus/*therapeutic use MH - Splenomegaly/drug therapy/prevention & control MH - TOR Serine-Threonine Kinases/*antagonists & inhibitors PMC - PMC4959967 MID - NIHMS765903 OTO - NOTNLM OT - anaemia OT - mechanistic target of rapamycin OT - sickle cell disease OT - sirolimus OT - stroke EDAT- 2016/04/01 06:00 MHDA- 2017/06/03 06:00 PMCR- 2016/09/01 CRDT- 2016/04/01 06:00 PHST- 2015/11/23 00:00 [received] PHST- 2016/01/19 00:00 [accepted] PHST- 2016/04/01 06:00 [entrez] PHST- 2016/04/01 06:00 [pubmed] PHST- 2017/06/03 06:00 [medline] PHST- 2016/09/01 00:00 [pmc-release] AID - 10.1111/bjh.14057 [doi] PST - ppublish SO - Br J Haematol. 2016 Aug;174(3):461-9. doi: 10.1111/bjh.14057. Epub 2016 Mar 31.