PUBLICATION

Pathogenic role of delta 2 tubulin in bortezomib-induced peripheral neuropathy

Authors
Pero, M.E., Meregalli, C., Qu, X., Shin, G.J., Kumar, A., Shorey, M., Rolls, M.M., Tanji, K., Brannagan, T.H., Alberti, P., Fumagalli, G., Monza, L., Grueber, W.B., Cavaletti, G., Bartolini, F.
ID
ZDB-PUB-210612-8
Date
2021
Source
Proceedings of the National Academy of Sciences of the United States of America   118(4): (Journal)
Registered Authors
Keywords
DRG, axonopathy, bortezomib, delta 2 tubulin, mitochondria
MeSH Terms
  • Animals
  • Antineoplastic Agents/adverse effects
  • Axons/drug effects
  • Axons/pathology
  • Bortezomib/adverse effects*
  • Disease Models, Animal
  • Drosophila melanogaster/genetics
  • Gene Expression Regulation, Neoplastic/drug effects
  • HEK293 Cells
  • Humans
  • Larva/drug effects
  • Larva/genetics
  • Microtubules/drug effects
  • Microtubules/genetics
  • Mitochondria/drug effects
  • Mitochondria/genetics
  • Mitochondrial Dynamics/drug effects
  • Mitochondrial Dynamics/genetics
  • Neoplasms/drug therapy*
  • Neoplasms/genetics
  • Neoplasms/pathology
  • Peripheral Nervous System Diseases/chemically induced
  • Peripheral Nervous System Diseases/genetics*
  • Peripheral Nervous System Diseases/pathology
  • Sensory Receptor Cells/drug effects
  • Sensory Receptor Cells/pathology
  • Tubulin/genetics*
  • Zebrafish/genetics
PubMed
33468672 Full text @ Proc. Natl. Acad. Sci. USA
Abstract
The pathogenesis of chemotherapy-induced peripheral neuropathy (CIPN) is poorly understood. Here, we report that the CIPN-causing drug bortezomib (Bort) promotes delta 2 tubulin (D2) accumulation while affecting microtubule stability and dynamics in sensory neurons in vitro and in vivo and that the accumulation of D2 is predominant in unmyelinated fibers and a hallmark of bortezomib-induced peripheral neuropathy (BIPN) in humans. Furthermore, while D2 overexpression was sufficient to cause axonopathy and inhibit mitochondria motility, reduction of D2 levels alleviated both axonal degeneration and the loss of mitochondria motility induced by Bort. Together, our data demonstrate that Bort, a compound structurally unrelated to tubulin poisons, affects the tubulin cytoskeleton in sensory neurons in vitro, in vivo, and in human tissue, indicating that the pathogenic mechanisms of seemingly unrelated CIPN drugs may converge on tubulin damage. The results reveal a previously unrecognized pathogenic role for D2 in BIPN that may occur through altered regulation of mitochondria motility.
Errata / Notes
This article is corrected by ZDB-PUB-220906-271 .
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