PMID- 32451386 OWN - NLM STAT- MEDLINE DCOM- 20201201 LR - 20210525 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 10 IP - 1 DP - 2020 May 25 TI - Development of type I/II oligodendrocytes regulated by teneurin-4 in the murine spinal cord. PG - 8611 LID - 10.1038/s41598-020-65485-0 [doi] LID - 8611 AB - In the spinal cord, the axonal tracts with various caliber sizes are myelinated by oligodendrocytes and function as high-velocity ways for motor and sensory nerve signals. In some neurological disorders, such as multiple sclerosis, demyelination of small caliber axons is observed in the spinal cord. While type I/II oligodendrocytes among the four types are known to myelinate small diameter axons, their characteristics including identification of regulating molecules have not been understood yet. Here, we first found that in the wild-type mouse spinal cord, type I/II oligodendrocytes, positive for carbonic anhydrase II (CAII), were located in the corticospinal tract, fasciculus gracilis, and the inside part of ventral funiculus, in which small diameter axons existed. The type I/II oligodendrocytes started to appear between postnatal day (P) 7 and 11. We further analyzed the type I/II oligodendrocytes in the mutant mice, whose small diameter axons were hypomyelinated due to the deficiency of teneurin-4. In the teneurin-4 deficient mice, type I/II oligodendrocytes were significantly reduced, and the onset of the defect was at P11. Our results suggest that CAII-positive type I/II oligodendrocytes myelinate small caliber axons in the spinal cord and teneurin-4 is the responsible molecule for the generation of type I/II oligodendrocytes. FAU - Hayashi, Chikako AU - Hayashi C AD - Department of Molecular and Cellular Biology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan. AD - Department of Biochemistry and Biophysics, Graduate School of Health Care Sciences, TMDU, Tokyo, Japan. FAU - Suzuki, Nobuharu AU - Suzuki N AD - Department of Molecular and Cellular Biology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan. nsuzbb@tmd.ac.jp. AD - Department of Biochemistry and Biophysics, Graduate School of Health Care Sciences, TMDU, Tokyo, Japan. nsuzbb@tmd.ac.jp. FAU - Takahashi, Riko AU - Takahashi R AD - Department of Molecular and Cellular Biology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan. FAU - Akazawa, Chihiro AU - Akazawa C AD - Department of Biochemistry and Biophysics, Graduate School of Health Care Sciences, TMDU, Tokyo, Japan. c.akazawa.bb@tmd.ac.jp. AD - Department of Biochemistry and Biophysics, Graduate School of Medical and Dental Sciences, TMDU, Tokyo, Japan. c.akazawa.bb@tmd.ac.jp. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200525 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 0 (Membrane Proteins) RN - 0 (Tenm4 protein, mouse) RN - EC 4.2.1.- (Carbonic Anhydrase II) SB - IM MH - Animals MH - Axons/metabolism MH - Carbonic Anhydrase II/metabolism MH - Intermediate Filaments/metabolism MH - Membrane Proteins/deficiency/genetics/*metabolism MH - Mice MH - Mice, Knockout MH - Myelin Sheath/metabolism MH - Oligodendroglia/enzymology/*metabolism MH - Pyramidal Tracts/metabolism MH - Spinal Cord/growth & development/*metabolism PMC - PMC7248063 COIS- The authors declare no competing interests. EDAT- 2020/05/27 06:00 MHDA- 2020/12/02 06:00 PMCR- 2020/05/25 CRDT- 2020/05/27 06:00 PHST- 2019/11/03 00:00 [received] PHST- 2020/04/29 00:00 [accepted] PHST- 2020/05/27 06:00 [entrez] PHST- 2020/05/27 06:00 [pubmed] PHST- 2020/12/02 06:00 [medline] PHST- 2020/05/25 00:00 [pmc-release] AID - 10.1038/s41598-020-65485-0 [pii] AID - 65485 [pii] AID - 10.1038/s41598-020-65485-0 [doi] PST - epublish SO - Sci Rep. 2020 May 25;10(1):8611. doi: 10.1038/s41598-020-65485-0.