PMID- 27008592 OWN - NLM STAT- MEDLINE DCOM- 20171004 LR - 20211204 IS - 1932-846X (Electronic) IS - 1932-8451 (Print) IS - 1932-8451 (Linking) VI - 76 IP - 12 DP - 2016 Dec TI - mTOR kinase is needed for the development and stabilization of dendritic arbors in newly born olfactory bulb neurons. PG - 1308-1327 LID - 10.1002/dneu.22392 [doi] AB - Neurogenesis is the process of neuron generation, which occurs not only during embryonic development but also in restricted niches postnatally. One such region is called the subventricular zone (SVZ), which gives rise to new neurons in the olfactory bulb (OB). Neurons that are born postnatally migrate through more complex territories and integrate into fully functional circuits. Therefore, differences in the differentiation of embryonic and postnatally born neurons may exist. Dendritogenesis is an important process for the proper formation of future neuronal circuits. Dendritogenesis in embryonic neurons cultured in vitro was shown to depend on the mammalian target of rapamycin (mTOR). Still unknown, however, is whether mTOR could regulate the dendritic arbor morphology of SVZ-derived postnatal OB neurons under physiological conditions in vivo. The present study used in vitro cultured and differentiated SVZ-derived neural progenitors and found that both mTOR complex 1 and mTOR complex 2 were required for the dendritogenesis of SVZ-derived neurons. Furthermore, using a combination of in vivo electroporation of neural stem cells in the SVZ and genetic and pharmacological inhibition of mTOR, it was found that mTOR was crucial for the growth of basal and apical dendrites in postnatally born OB neurons under physiological conditions and contributed to the stabilization of their basal dendrites. (c) 2016 Wiley Periodicals, Inc. Develop Neurobiol 76: 1308-1327, 2016. CI - (c) 2016 The Authors Developmental Neurobiology Published by Wiley Periodicals, Inc. FAU - Skalecka, Agnieszka AU - Skalecka A AD - International Institute of Molecular and Cell Biology, 4 Ks. Trojdena St, Warsaw, 02-109, Poland. FAU - Liszewska, Ewa AU - Liszewska E AD - International Institute of Molecular and Cell Biology, 4 Ks. Trojdena St, Warsaw, 02-109, Poland. FAU - Bilinski, Robert AU - Bilinski R AD - Departement De Mathematiques, College Montmorency, 475 Boulevard De L'Avenir, Laval, Quebec, H7N 5H9, Canada. FAU - Gkogkas, Christos AU - Gkogkas C AD - Patrick Wild Centre and Centre for Integrative Physiology, University of Edinburgh, Hugh Robson Building George Square, Edinburgh, EH8 9XD, United Kingdom. FAU - Khoutorsky, Arkady AU - Khoutorsky A AD - Department of Biochemistry, Goodman Cancer Research Centre, McGill University, 1160 Pine Avenue West, Montreal, Quebec, H3A 1A3, Canada. FAU - Malik, Anna R AU - Malik AR AD - International Institute of Molecular and Cell Biology, 4 Ks. Trojdena St, Warsaw, 02-109, Poland. FAU - Sonenberg, Nahum AU - Sonenberg N AD - Department of Biochemistry, Goodman Cancer Research Centre, McGill University, 1160 Pine Avenue West, Montreal, Quebec, H3A 1A3, Canada. FAU - Jaworski, Jacek AU - Jaworski J AD - International Institute of Molecular and Cell Biology, 4 Ks. Trojdena St, Warsaw, 02-109, Poland. LA - eng PT - Journal Article DEP - 20160407 PL - United States TA - Dev Neurobiol JT - Developmental neurobiology JID - 101300215 RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) SB - IM MH - Animals MH - Cell Differentiation/physiology MH - Cell Movement/physiology MH - Cerebral Ventricles/physiology MH - Mice MH - Neural Stem Cells/cytology/*metabolism MH - Neurogenesis/*physiology MH - Neurons/cytology/*metabolism MH - Olfactory Bulb/*growth & development MH - TOR Serine-Threonine Kinases/*metabolism PMC - PMC5132010 OTO - NOTNLM OT - dendritogenesis OT - in vivo electroporation OT - mTOR OT - olfactory bulb OT - postnatal neurogenesis EDAT- 2016/03/24 06:00 MHDA- 2017/10/05 06:00 PMCR- 2016/12/01 CRDT- 2016/03/24 06:00 PHST- 2015/08/24 00:00 [received] PHST- 2016/02/05 00:00 [revised] PHST- 2016/03/21 00:00 [accepted] PHST- 2016/03/24 06:00 [pubmed] PHST- 2017/10/05 06:00 [medline] PHST- 2016/03/24 06:00 [entrez] PHST- 2016/12/01 00:00 [pmc-release] AID - DNEU22392 [pii] AID - 10.1002/dneu.22392 [doi] PST - ppublish SO - Dev Neurobiol. 2016 Dec;76(12):1308-1327. doi: 10.1002/dneu.22392. Epub 2016 Apr 7.