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Salamon I, Palsule G, Luo X, Roque A, Tucai S, Khosla I, Volk N, Liu W, Cui H, Pozzo VD, Zalamea P, Jiao X, D'Arcangelo G, Hart RP, Rasin MR, Kiledjian M. mRNA-Decapping Associated DcpS Enzyme Controls Critical Steps of Neuronal Development. Cereb Cortex 2021; 32:1494-1507. [PMID: 34467373 DOI: 10.1093/cercor/bhab302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 07/08/2021] [Accepted: 07/12/2021] [Indexed: 11/13/2022] Open
Abstract
Homozygous mutations in the gene encoding the scavenger mRNA-decapping enzyme, DcpS, have been shown to underlie developmental delay and intellectual disability. Intellectual disability is associated with both abnormal neocortical development and mRNA metabolism. However, the role of DcpS and its scavenger decapping activity in neuronal development is unknown. Here, we show that human neurons derived from patients with a DcpS mutation have compromised differentiation and neurite outgrowth. Moreover, in the developing mouse neocortex, DcpS is required for the radial migration, polarity, neurite outgrowth, and identity of developing glutamatergic neurons. Collectively, these findings demonstrate that the scavenger mRNA decapping activity contributes to multiple pivotal roles in neural development and further corroborate that mRNA metabolism and neocortical pathologies are associated with intellectual disability.
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Affiliation(s)
- Iva Salamon
- Department of Neuroscience and Cell Biology, Rutgers, Robert Wood Johnson Medical School, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Geeta Palsule
- Department of Cell Biology and Neuroscience, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Xiaobing Luo
- Department of Cell Biology and Neuroscience, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Alfonso Roque
- Department of Neuroscience and Cell Biology, Rutgers, Robert Wood Johnson Medical School, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Shawn Tucai
- Department of Neuroscience and Cell Biology, Rutgers, Robert Wood Johnson Medical School, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Ishan Khosla
- Department of Neuroscience and Cell Biology, Rutgers, Robert Wood Johnson Medical School, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Nicole Volk
- Department of Neuroscience and Cell Biology, Rutgers, Robert Wood Johnson Medical School, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Wendy Liu
- Department of Cell Biology and Neuroscience, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Huijuan Cui
- Department of Cell Biology and Neuroscience, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Valentina Dal Pozzo
- Department of Cell Biology and Neuroscience, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Petronio Zalamea
- Department of Cell Biology and Neuroscience, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Xinfu Jiao
- Department of Cell Biology and Neuroscience, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Gabriella D'Arcangelo
- Department of Cell Biology and Neuroscience, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Ronald P Hart
- Department of Cell Biology and Neuroscience, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Mladen-Roko Rasin
- Department of Neuroscience and Cell Biology, Rutgers, Robert Wood Johnson Medical School, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Megerditch Kiledjian
- Department of Cell Biology and Neuroscience, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
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