Mitochondrial dynamics in injured axons

2012 Fiscal Year Final Research Report

• Project/Area Number: 22500314
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Nerve anatomy/Neuropathology
• Research Institution: Nagoya University (2011-2012); Osaka City University (2010)
• Principal Investigator: KIRYU Sumiko (SEO Sumiko) 名古屋大学, 大学院・医学系研究科, 准教授 (70311529)
• Project Period (FY): 2010 – 2012
• Keywords: 神経損傷 / 神経再生 / 神経変性 / ATF3 / ミトコンドリア / 軸索輸送 / BACトランスジェニックマウス

Research Abstract

This study focused on mitochondria and attempted to elucidate mitochondrial dynamics in injured axons. For this purpose, we generated BAC transgenic mice to label mitochondria specificallyin injured neurons. The mice showed that mitochondria in the cell body were fragmented in responseto nerve injury and transported to axonal terminal, suggesting that the change is an adaptive response for nerve regeneration.

Research Products

• [Journal Article] Expression analysis of the regenerating gene (Reg) family members Reg-IIIβand Reg-IIIγin the mouse during development (2012)
  • Author(s): Matsumoto S, Konishi H, Maeda R, Kiryu-Seo S, Kiyama H
  • Journal Title: J Comp Nuerol Volume: 520 Pages: 479-494
  • DOI: DOI:10.1002/cne.22705.
  • Peer Reviewed
• [Journal Article] The nuclear events guiding successful nerve regeneration (2011)
  • Author(s): Kiryu-Seo S, Kiyama H
  • Journal Title: Front Mol Neurosci Volume: 4 Pages: 53
  • DOI: DOI:10.3389/fnmol.2011.00053
  • Peer Reviewed
• [Journal Article] Cleavage of neuregulin-1 by BACE1 or ADAM10 produces differential effects on myelination (2011)
  • Author(s): Luo X, Prior M, He W, Hu X, Tang X, Sheng W, Yadav S, Kiryu-Seo S, Miller R, Trapp B, Yan R
  • Journal Title: J Biol Chem Volume: 286 Pages: 23967-23964
  • DOI: DOI:10.1074/jbc.M111.251538
  • Peer Reviewed
• [Journal Article] Myelination and axonal electrical activity modulate the distribution and motility of mitochondria at CNS nodes of Ranvier. (2011)
  • Author(s): Ohno N, Kidd G, Mahad D, Kiryu-Seo S, Avishai A, Komuro H, Trapp BD
  • Journal Title: J Neurosci Volume: 31 Pages: 7249-7528
  • DOI: DOI:10.1523/JNEUROSCI.0095-11
  • Peer Reviewed
• [Journal Article] Damage-induced neuronal endopeptidase is critical for presynaptic formation of neuro-muscular junctions (2010)
  • Author(s): Nagata K, Kiryu-Seo S, Maeda M, Yoshida K, Morita T, Kiyama H.
  • Journal Title: J Neurosci Volume: 30 Pages: 6954-6962
  • DOI: DOI:10.1523/JNEUROSCI.4521-09.2010.
  • Peer Reviewed
• [Journal Article] Demyelination increases axonal stationary mitochondrial size and the speed of axonal mitochondrial transport (2010)
  • Author(s): Kiryu-Seo S, Ohno N, Kidd GJ, Komuro H, Trapp BD
  • Journal Title: J Neurosci Volume: 30 Pages: 6658-6666
  • DOI: DOI:10.1523/JNEUROSCI.5265-09
  • Peer Reviewed
• [Journal Article] Molecular characterization and expression of the low-density lipoprotein receptor-related protein-10, a new member of the LDLR gene family (2010)
  • Author(s): Jeong YH, Ishikawa K, Someya Y, Hosoda A, Yoshimi T, Yokoyama C, Kiryu-Seo S, Kang MJ, Tchibana T, Kiyama H, Fukumura T, Kim DH, Saeki S
  • Journal Title: Biochem Biophys Res Commun Volume: 391 Pages: 110-115
  • DOI: DOI:10.1016/j.bbrc.2009.12.033
  • Peer Reviewed
• [Presentation] 「損傷神経細胞の再生能力に関わる分子メカニズム」(シンポジウム) (2013)
  • Author(s): 桐生寿美子、木山博資
  • Organizer: 第118回日本解剖学会全国学術集会
  • Place of Presentation: かがわ国際会議場、香川
  • Year and Date: 2013-03-30
• [Presentation] DINE欠損は軸索-シュワン細胞相互作用に影響を及ぼし軸索ブランチング形成異常を引き起こす(DINE deficiency affects axon-Schwann cell interactions, leading to failure of nerve terminal arborization) (2012)
  • Author(s): 桐生寿美子、松本早紀子、木山博資
  • Organizer: 第35回日本神経科学会
  • Place of Presentation: 名古屋国際会議場、名古屋
  • Year and Date: 2012-09-19
• [Presentation] 脱髄軸索におけるミトコンドリアダイナミクスの変化 (2011)
  • Author(s): 桐生寿美子、大野伸彦、Grahame J. Kid、小室仁、Bruce D. Trapp
  • Organizer: 第71回日本解剖学会中部支部学術集会
  • Place of Presentation: 名古屋大学、名古屋
  • Year and Date: 2011-10-15
• [Presentation] Demyelination alters axonal stationary mitochondrial size and the speed of axonal mitochondrial transport脱髄による軸索内ミトコンドリアのサイズと輸送速度の変化 (2010)
  • Author(s): 桐生-瀬尾寿美子、大野伸彦、Grahame J. Kidd、小室仁、Bruce D. Trapp
  • Organizer: Neuro2010
  • Place of Presentation: 神戸コンベンションセンター、神戸
  • Year and Date: 2010-09-04
• [Presentation] 脱髄軸索におけるミトコンドリアの動態変化 (2010)
  • Author(s): 桐生-瀬尾寿美子、大野伸彦、Grahame J. Kidd、小室仁、Bruce D. Trapp
  • Organizer: 第25回神経組織の成長・再生・移植研究会学術集会
  • Place of Presentation: 大阪市立大学、大阪
  • Year and Date: 2010-05-22
• [Remarks]
  • URL: http://www.med.nagoya-u.ac.jp/Anatomy2/