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Suzuki M, Takagi S. An analysis of semaphorin-mediated cellular interactions in the Caenorhabditis elegans epidermis using the IR-LEGO single-cell gene induction system. Dev Growth Differ 2024; 66:308-319. [PMID: 38761018 DOI: 10.1111/dgd.12925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 04/15/2024] [Accepted: 04/21/2024] [Indexed: 05/20/2024]
Abstract
One of the major functions of the semaphorin signaling system is the regulation of cell shape. In the nematode Caenorhabditis elegans, membrane-bound semaphorins SMP-1/2 (SMPs) regulate the morphology of epidermal cells via their receptor plexin, PLX-1. In the larval male tail of the SMP-PLX-1 signaling mutants, the border between two epidermal cells, R1.p and R2.p, is displaced anteriorly, resulting in the anterior displacement of the anterior-most ray, ray 1, in the adult male. To elucidate how the intercellular signaling mediated by SMPs regulates the position of the intercellular border, we performed mosaic gene expression analyses by using infrared laser-evoked gene operator (IR-LEGO). We show that PLX-1 expressed in R1.p and SMP-1 expressed in R2.p are required for the proper positioning of ray 1. The result suggests that SMP signaling promotes extension, rather than retraction, of R1.p. This is in contrast to a previous finding that SMPs mediate inhibition of cell extension of vulval precursor cells, another group of epidermal cells of C. elegans, indicating the context dependence of cell shape control via the semaphorin signaling system.
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Affiliation(s)
- Motoshi Suzuki
- Division of Biological Science, Graduate School of Science, Nagoya University, Nagoya, Japan
| | - Shin Takagi
- Division of Biological Science, Graduate School of Science, Nagoya University, Nagoya, Japan
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Ogino H, Kamei Y, Hayashi T, Sakamoto J, Suzuki M, Igawa T, Kondo M, Taira M. Invention sharing is the mother of developmental biology (part 4). Dev Growth Differ 2023; 65:286-287. [PMID: 37610050 DOI: 10.1111/dgd.12883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/22/2023] [Indexed: 08/24/2023]
Affiliation(s)
- Hajime Ogino
- Amphibian Research Center, Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, Japan
| | - Yasuhiro Kamei
- Optics and Bioimaging Facility, Trans-Scale Biology Center, National Institute for Basic Biology, Okazaki, Japan
| | - Toshinori Hayashi
- Amphibian Research Center, Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, Japan
| | - Joe Sakamoto
- Biophotonics Research Group, Exploratory Research Center on Life and Living Systems (ExCELLS), Okazaki, Japan
| | - Makoto Suzuki
- Amphibian Research Center, Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, Japan
| | - Takeshi Igawa
- Amphibian Research Center, Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, Japan
| | - Mariko Kondo
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Masanori Taira
- Faculty of Science and Engineering, Chuo University, Tokyo, Japan
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Harreguy MB, Tanvir Z, Shah E, Simprevil B, Tran TS, Haspel G. Semaphorin signaling restricts neuronal regeneration in C. elegans. Front Cell Dev Biol 2022; 10:814160. [PMID: 36325362 PMCID: PMC9618706 DOI: 10.3389/fcell.2022.814160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 09/23/2022] [Indexed: 11/13/2022] Open
Abstract
Extracellular signaling proteins serve as neuronal growth cone guidance molecules during development and are well positioned to be involved in neuronal regeneration and recovery from injury. Semaphorins and their receptors, the plexins, are a family of conserved proteins involved in development that, in the nervous system, are axonal guidance cues mediating axon pathfinding and synapse formation. The Caenorhabditis elegans genome encodes for three semaphorins and two plexin receptors: the transmembrane semaphorins, SMP-1 and SMP-2, signal through their receptor, PLX-1, while the secreted semaphorin, MAB-20, signals through PLX-2. Here, we evaluate the locomotion behavior of knockout animals missing each of the semaphorins and plexins and the neuronal morphology of plexin knockout animals; we described the cellular expression pattern of the promoters of all plexins in the nervous system of C. elegans; and we evaluated their effect on the regrowth and reconnection of motoneuron neurites and the recovery of locomotion behavior following precise laser microsurgery. Regrowth and reconnection were more prevalent in the absence of each plexin, while recovery of locomotion surpassed regeneration in all genotypes.
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Affiliation(s)
- Maria B Harreguy
- New Jersey Institute of Technology, Department of Biological Sciences, Newark, NJ, United States
- Rutgers University, Department of Biological Sciences, Newark, NJ, United States
| | - Zainab Tanvir
- New Jersey Institute of Technology, Department of Biological Sciences, Newark, NJ, United States
- Rutgers University, Department of Biological Sciences, Newark, NJ, United States
| | - Esha Shah
- New Jersey Institute of Technology, Department of Biological Sciences, Newark, NJ, United States
| | - Blandine Simprevil
- New Jersey Institute of Technology, Department of Biological Sciences, Newark, NJ, United States
- City College of New York (CUNY), New York, NY, United States
| | - Tracy S Tran
- New Jersey Institute of Technology, Department of Biological Sciences, Newark, NJ, United States
- Rutgers University, Department of Biological Sciences, Newark, NJ, United States
| | - Gal Haspel
- New Jersey Institute of Technology, Department of Biological Sciences, Newark, NJ, United States
- Rutgers University, Department of Biological Sciences, Newark, NJ, United States
- Mercer University School of Medicine, Department of Biomedical Sciences, Columbus, GA, United States
- *Correspondence: Gal Haspel, ,
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