Neuroinflammation by cytotoxic T-Lymphocytes impairs retrograde axonal transport in an oligodendrocyte mutant mouse

• Verfasst von: Ip, Chi Wang [VerfasserIn]
• Verfasst von: Diem, Ricarda [VerfasserIn]
• Verfasst von: Williams-Fairless, Sarah K. [VerfasserIn]
• Titel: Neuroinflammation by cytotoxic T-Lymphocytes impairs retrograde axonal transport in an oligodendrocyte mutant mouse
• Verf.angabe: Chi Wang Ip, Antje Kroner, Janos Groh, Marianne Huber, Dennis Klein, Irene Spahn, Ricarda Diem, Sarah K. Williams, Klaus-Armin Nave, Julia M. Edgar, Rudolf Martini
• E-Jahr: 2012
• Jahr: August 8, 2012
• Umfang: 9 S.
• Fussnoten: Gesehen am 20.11.2018
• Titel Quelle: Enthalten in: PLOS ONE
• Ort Quelle: San Francisco, California, US : PLOS, 2006
• Jahr Quelle: 2012
• Band/Heft Quelle: 7(2012), 8, Artikel-ID e42554
• ISSN Quelle: 1932-6203
• DOI: doi:10.1371/journal.pone.0042554
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Axonal transport
• Sach-SW: Axons
• Sach-SW: Dyneins
• Sach-SW: Lymphocytes
• Sach-SW: Optic nerve
• Sach-SW: Retina
• Sach-SW: Retinal ganglion cells
• Sach-SW: T cells
• K10plus-PPN: 158387416X

Abstract

Mice overexpressing proteolipid protein (PLP) develop a leukodystrophy-like disease involving cytotoxic, CD8+ T-lymphocytes. Here we show that these cytotoxic T-lymphocytes perturb retrograde axonal transport. Using fluorogold stereotactically injected into the colliculus superior, we found that PLP overexpression in oligodendrocytes led to significantly reduced retrograde axonal transport in retina ganglion cell axons. We also observed an accumulation of mitochondria in the juxtaparanodal axonal swellings, indicative for a disturbed axonal transport. PLP overexpression in the absence of T-lymphocytes rescued retrograde axonal transport defects and abolished axonal swellings. Bone marrow transfer from wildtype mice, but not from perforin- or granzyme B-deficient mutants, into lymphocyte-deficient PLP mutant mice led again to impaired axonal transport and the formation of axonal swellings, which are predominantly located at the juxtaparanodal region. This demonstrates that the adaptive immune system, including cytotoxic T-lymphocytes which release perforin and granzyme B, are necessary to perturb axonal integrity in the PLP-transgenic disease model. Based on our observations, so far not attended molecular and cellular players belonging to the immune system should be considered to understand pathogenesis in inherited myelin disorders with progressive axonal damage.