title: Decoding the ubiquitous role of microRNAs in neurogenesis.
abstract: Neurogenesis generates fledgling neurons that mature to form an intricate neuronal circuitry. The delusion on adult neurogenesis was far resolved in the past decade and became one of the largely explored domains to identify multifaceted mechanisms bridging neurodevelopment and neuropathology. Neurogenesis encompasses multiple processes including neural stem cell proliferation, neuronal differentiation, and cell fate determination. Each neurogenic process is specifically governed by manifold signaling pathways, several growth factors, coding, and non-coding RNAs. A class of small non-coding RNAs, microRNAs (miRNAs), is ubiquitously expressed in the brain and has emerged to be potent regulators of neurogenesis. It functions by fine-tuning the expression of specific neurogenic gene targets at the post-transcriptional level and modulates the development of mature neurons from neural progenitor cells. Besides the commonly discussed intrinsic factors, the neuronal morphogenesis is also under the control of several extrinsic temporal cues, which in turn are regulated by miRNAs. This review enlightens on dicer controlled switch from neurogenesis to gliogenesis, miRNA regulation of neuronal maturation and the differential expression of miRNAs in response to various extrinsic cues affecting neurogenesis.
authors.affiliation: School of Biotechnology, National Institute of Technology Calicut, Calicut, 673601, India.
authors.forename: Sreekala S
authors.initials: SS
authors.lastname: Nampoothiri
authors.affiliation: School of Biotechnology, National Institute of Technology Calicut, Calicut, 673601, India. rajanikant@nitc.ac.in.|School of Biotechnology, DBT - Centre for Bioinformatics, National Institute of Technology Calicut, Calicut, 673601, India. rajanikant@nitc.ac.in.
authors.forename: G K
authors.initials: GK
authors.lastname: Rajanikant
mesh_terms: D000818:Animals; D001921:Brain / Q000502:physiology; D002454:Cell Differentiation / Q000502:physiology; D053487:DEAD-box RNA Helicases / Q000235:genetics / Q000378:metabolism*; D006801:Humans; D035683:MicroRNAs / Q000502:physiology*; D058953:Neural Stem Cells / Q000502:physiology; D055495:Neurogenesis / Q000502:physiology*; D009474:Neurons / Q000502:physiology*; D043244:Ribonuclease III / Q000235:genetics / Q000378:metabolism*; D013569:Synapses / Q000235:genetics / Q000378:metabolism
chemical_list: D035683:MicroRNAs; C408087:DICER1 protein, human; D043244:Ribonuclease III; D053487:DEAD-box RNA Helicases
keywords: Alcohol; Dicer; Neurogenesis; Opioids; Steroids; miRNA