Cell fate determination, neuronal maintenance and disease state: The emerging role of transcription factors Lmx1a and Lmx1b.
Identifieur interne : 000802 ( Main/Exploration ); précédent : 000801; suivant : 000803Cell fate determination, neuronal maintenance and disease state: The emerging role of transcription factors Lmx1a and Lmx1b.
Auteurs : Hélène Doucet-Beaupré [Canada] ; Siew-Lan Ang [Royaume-Uni] ; Martin Lévesque [Canada]Source :
- FEBS letters [ 1873-3468 ] ; 2015.
English descriptors
- KwdEn :
- MESH :
- chemical , physiology : LIM-Homeodomain Proteins, Transcription Factors.
- genetics : Parkinson Disease.
- metabolism : Brain, Parkinson Disease.
- pathology : Brain, Parkinson Disease.
- Animals, Gene Expression Regulation, Homeostasis, Humans, Neurogenesis.
Abstract
LIM-homeodomain (LIM-HD) proteins are evolutionary conserved developmental transcription factors. LIM-HD Lmx1a and Lmx1b orchestrate complex temporal and spatial gene expression of the dopaminergic pathway, and evidence shows they are also involved in adult neuronal homeostasis. In this review, the multiple roles played by Lmx1a and Lmx1b will be discussed. Controlled Lmx1a and Lmx1b expression and activities ensure the proper formation of critical signaling centers, including the embryonic ventral mesencephalon floor plate and sharp boundaries between lineage-specific cells. Lmx1a and Lmx1b expression persists in mature dopaminergic neurons of the substantia nigra pars compacta and the ventral tegmental area, and their role in the adult brain is beginning to be revealed. Notably, LMX1B expression was lower in brain tissue affected by Parkinson's disease. Actual and future applications of Lmx1a and Lmx1b transcription factors in stem cell production as well as in direct conversion of fibroblast into dopaminergic neurons are also discussed. A thorough understanding of the role of LMX1A and LMX1B in a number of disease states, including developmental diseases, cancer and neurodegenerative diseases, could lead to significant benefits for human healthcare.
DOI: 10.1016/j.febslet.2015.10.020
PubMed: 26526610
Affiliations:
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