PMID- 33226471 OWN - NLM STAT- MEDLINE DCOM- 20211025 LR - 20240330 IS - 1432-0533 (Electronic) IS - 0001-6322 (Print) IS - 0001-6322 (Linking) VI - 141 IP - 2 DP - 2021 Feb TI - Intellectual disability: dendritic anomalies and emerging genetic perspectives. PG - 139-158 LID - 10.1007/s00401-020-02244-5 [doi] AB - Intellectual disability (ID) corresponds to several neurodevelopmental disorders of heterogeneous origin in which cognitive deficits are commonly associated with abnormalities of dendrites and dendritic spines. These histological changes in the brain serve as a proxy for underlying deficits in neuronal network connectivity, mostly a result of genetic factors. Historically, chromosomal abnormalities have been reported by conventional karyotyping, targeted fluorescence in situ hybridization (FISH), and chromosomal microarray analysis. More recently, cytogenomic mapping, whole-exome sequencing, and bioinformatic mining have led to the identification of novel candidate genes, including genes involved in neuritogenesis, dendrite maintenance, and synaptic plasticity. Greater understanding of the roles of these putative ID genes and their functional interactions might boost investigations into determining the plausible link between cellular and behavioral alterations as well as the mechanisms contributing to the cognitive impairment observed in ID. Genetic data combined with histological abnormalities, clinical presentation, and transgenic animal models provide support for the primacy of dysregulation in dendrite structure and function as the basis for the cognitive deficits observed in ID. In this review, we highlight the importance of dendrite pathophysiology in the etiologies of four prototypical ID syndromes, namely Down Syndrome (DS), Rett Syndrome (RTT), Digeorge Syndrome (DGS) and Fragile X Syndrome (FXS). Clinical characteristics of ID have also been reported in individuals with deletions in the long arm of chromosome 10 (the q26.2/q26.3), a region containing the gene for the collapsin response mediator protein 3 (CRMP3), also known as dihydropyrimidinase-related protein-4 (DRP-4, DPYSL4), which is involved in dendritogenesis. Following a discussion of clinical and genetic findings in these syndromes and their preclinical animal models, we lionize CRMP3/DPYSL4 as a novel candidate gene for ID that may be ripe for therapeutic intervention. FAU - Quach, Tam T AU - Quach TT AD - Institute for Behavioral Medicine Research, Wexner Medical Center, The Ohio State University, Columbus, OH, 43210, USA. AD - INSERM U1217/CNRS, UMR5310, Universite de Lyon, Universite Claude Bernard Lyon 1, Lyon, France. FAU - Stratton, Harrison J AU - Stratton HJ AD - Department of Pharmacology, University of Arizona, Tucson, AZ, 85724, USA. FAU - Khanna, Rajesh AU - Khanna R AD - Department of Pharmacology, University of Arizona, Tucson, AZ, 85724, USA. FAU - Kolattukudy, Pappachan E AU - Kolattukudy PE AD - Department of Biological Chemistry and Pharmacology, Columbus, OH, 43210, USA. FAU - Honnorat, Jerome AU - Honnorat J AD - INSERM U1217/CNRS, UMR5310, Universite de Lyon, Universite Claude Bernard Lyon 1, Lyon, France. AD - French Reference Center on Paraneoplastic Neurological Syndromes and Autoimmune Encephalitis, Hospices Civils de Lyon, Lyon, France. AD - SynatAc Team, Institut NeuroMyoGene, Lyon, France. FAU - Meyer, Kathrin AU - Meyer K AD - The Research Institute of Nationwide Children Hospital, Columbus, OH, 43205, USA. AD - Department of Pediatric, The Ohio State University, Columbus, OH, 43210, USA. FAU - Duchemin, Anne-Marie AU - Duchemin AM AUID- ORCID: 0000-0003-3655-1747 AD - Department of Psychiatry and Behavioral Health, The Ohio State University, Columbus, OH, 43210, USA. Anne-Marie.Duchemin@osumc.edu. LA - eng GR - R01 DA042852/DA/NIDA NIH HHS/United States GR - R01 NS098772/NS/NINDS NIH HHS/United States GR - R01DA04285202/NH/NIH HHS/United States GR - R01NS09877202/NH/NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Review DEP - 20201123 PL - Germany TA - Acta Neuropathol JT - Acta neuropathologica JID - 0412041 RN - 0 (DPYSL4 protein, human) RN - 0 (Nerve Tissue Proteins) SB - IM MH - Animals MH - Child, Preschool MH - Chromosome Aberrations MH - Dendrites/*genetics/*pathology MH - Humans MH - Intellectual Disability/*genetics/*pathology MH - Nerve Tissue Proteins/genetics PMC - PMC7855540 MID - NIHMS1649330 OTO - NOTNLM OT - CRMP3/DPYSL4 OT - Chromosome 10 (q26) deletion OT - Dendrite dysgenesis OT - Intellectual disability OT - Transgenic mice EDAT- 2020/11/24 06:00 MHDA- 2021/10/26 06:00 PMCR- 2022/02/01 CRDT- 2020/11/23 12:10 PHST- 2020/08/11 00:00 [received] PHST- 2020/11/05 00:00 [accepted] PHST- 2020/11/04 00:00 [revised] PHST- 2020/11/24 06:00 [pubmed] PHST- 2021/10/26 06:00 [medline] PHST- 2020/11/23 12:10 [entrez] PHST- 2022/02/01 00:00 [pmc-release] AID - 10.1007/s00401-020-02244-5 [pii] AID - 10.1007/s00401-020-02244-5 [doi] PST - ppublish SO - Acta Neuropathol. 2021 Feb;141(2):139-158. doi: 10.1007/s00401-020-02244-5. Epub 2020 Nov 23.