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Hani T, Fujita K, Kudo T, Taya Y, Sato K, Soeno Y. Tissue-Targeted Transcriptomics Reveals SEMA3D Control of Hypoglossal Nerve Projection to Mouse Tongue Primordia. Acta Histochem Cytochem 2024; 57:35-46. [PMID: 38463205 PMCID: PMC10918430 DOI: 10.1267/ahc.23-00073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 01/16/2024] [Indexed: 03/12/2024] Open
Abstract
The mouse hypoglossal nerve originates in the occipital motor nuclei at embryonic day (E)10.5 and projects a long distance, reaching the vicinity of the tongue primordia, the lateral lingual swellings, at E11.5. However, the details of how the hypoglossal nerve correctly projects to the primordia are poorly understood. To investigate the molecular basis of hypoglossal nerve elongation, we used a novel transcriptomic approach using the ROKU method. The ROKU algorithm identified 3825 genes specific for lateral lingual swellings at E11.5, of which 34 genes were predicted to be involved in axon guidance. Ingenuity Pathway Analysis-assisted enrichment revealed activation of the semaphorin signaling pathway during tongue development, and quantitative PCR showed that the expressions of Sema3d and Nrp1 in this pathway peaked at E11.5. Immunohistochemistry detected NRP1 in the hypoglossal nerve and SEMA3D as tiny granules in the extracellular space beneath the epithelium of the tongue primordia and in lateral and anterior regions of the mandibular arch. Fewer SEMA3D granules were localized around hypoglossal nerve axons and in the space where they elongated. In developing tongue primordia, tissue-specific regulation of SEMA3D might control the route of hypoglossal nerve projection via its repulsive effect on NRP1.
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Affiliation(s)
- Taisuke Hani
- Department of Pathology, The Nippon Dental University, School of Life Dentistry at Tokyo, 1-9-20, Fujimi, Chiyoda-ku, 102-8159 Tokyo, Japan
| | - Kazuya Fujita
- Department of Pathology, The Nippon Dental University, School of Life Dentistry at Tokyo, 1-9-20, Fujimi, Chiyoda-ku, 102-8159 Tokyo, Japan
| | - Tomoo Kudo
- Department of Pathology, The Nippon Dental University, School of Life Dentistry at Tokyo, 1-9-20, Fujimi, Chiyoda-ku, 102-8159 Tokyo, Japan
| | - Yuji Taya
- Department of Pathology, The Nippon Dental University, School of Life Dentistry at Tokyo, 1-9-20, Fujimi, Chiyoda-ku, 102-8159 Tokyo, Japan
| | - Kaori Sato
- Department of Pathology, The Nippon Dental University, School of Life Dentistry at Tokyo, 1-9-20, Fujimi, Chiyoda-ku, 102-8159 Tokyo, Japan
| | - Yuuichi Soeno
- Department of Pathology, The Nippon Dental University, School of Life Dentistry at Tokyo, 1-9-20, Fujimi, Chiyoda-ku, 102-8159 Tokyo, Japan
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Kawamoto S, Hani T, Fujita K, Taya Y, Sasaki Y, Kudo T, Sato K, Soeno Y. Nuclear factor 1 X-type-associated regulation of myogenesis in developing mouse tongue. J Oral Biosci 2023; 65:88-96. [PMID: 36669698 DOI: 10.1016/j.job.2023.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/10/2023] [Accepted: 01/10/2023] [Indexed: 01/19/2023]
Abstract
OBJECTIVES The tongue contains skeletal myofibers that differ from those in the trunk, limbs, and other orofacial muscles. However, the molecular basis of myogenic differentiation in the tongue muscles remains unclear. In this study, we conducted comprehensive gene expression profiling of the developing murine tongue. METHODS Tongue primordia were dissected from mouse embryos at embryonic day (E)10.5-E18.5, while myogenic markers were detected via microarray analysis and quantitative polymerase chain reaction (PCR). In addition to common myogenic regulatory factors such as Myf5, MyoD, myogenin, and Mrf4, we focused on Nfix, which acts as a unique molecular switch triggering the shift from embryonic to fetal myoblast lineage during limb myogenesis. Nfix inhibition was performed using a specific antisense oligonucleotide in the organ culture of tongue primordia. RESULTS Microarray and ingenuity pathway analyses confirmed the significant upregulation of myogenic signaling molecules, including Nfix, associated with the differentiation of myoblasts from myogenic progenitor cells during E10.5-E11.5. Quantitative PCR confirmed that Nfix expression started at E10.5 and peaked at E14.5. Fetal myoblast-specific genes, such as Mck and Myh8, were upregulated after E14.5, whereas embryonic myoblast-specific genes, such as Myh3 and Myh7, were downregulated. When Nfix was inhibited in the organ culture of tongue primordia, subtle morphological differences were noted in the tongue. Such an observation was only noted in the cultures of E10.5-derived tongue primordia. CONCLUSIONS These results reveal the contribution of Nfix to tongue myogenesis. Nfix expression during early tongue development may play a vital role in tongue muscle development.
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Affiliation(s)
- Sayaka Kawamoto
- Department of Pathology, The Nippon Dental University, School of Life Dentistry at Tokyo, 1-9-20 Fujimi, Chiyoda-ku, Tokyo, 102-8159, Japan.
| | - Taisuke Hani
- Department of Pathology, The Nippon Dental University, School of Life Dentistry at Tokyo, 1-9-20 Fujimi, Chiyoda-ku, Tokyo, 102-8159, Japan.
| | - Kazuya Fujita
- Department of Pathology, The Nippon Dental University, School of Life Dentistry at Tokyo, 1-9-20 Fujimi, Chiyoda-ku, Tokyo, 102-8159, Japan.
| | - Yuji Taya
- Department of Pathology, The Nippon Dental University, School of Life Dentistry at Tokyo, 1-9-20 Fujimi, Chiyoda-ku, Tokyo, 102-8159, Japan.
| | - Yasunori Sasaki
- Department of Dentistry, Kanagawa Children's Medical Center, 2-138-4 Mutsukawa, Minami-ku, Yokohama, 232-8555, Japan.
| | - Tomoo Kudo
- Department of Pathology, The Nippon Dental University, School of Life Dentistry at Tokyo, 1-9-20 Fujimi, Chiyoda-ku, Tokyo, 102-8159, Japan.
| | - Kaori Sato
- Department of Pathology, The Nippon Dental University, School of Life Dentistry at Tokyo, 1-9-20 Fujimi, Chiyoda-ku, Tokyo, 102-8159, Japan.
| | - Yuuichi Soeno
- Department of Pathology, The Nippon Dental University, School of Life Dentistry at Tokyo, 1-9-20 Fujimi, Chiyoda-ku, Tokyo, 102-8159, Japan.
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