Messenger RNA transport on lysosomal vesicles maintains axonal mitochondrial homeostasis and prevents axonal degeneration
Open accessAbstract
In neurons, RNA granules are transported along the axon for local translation away from the soma. Recent studies indicate that some of this transport involves hitchhiking of RNA granules on lysosome-related vesicles. In the present study, we leveraged the ability to prevent transport of these vesicles into the axon by knockout of the lysosome–kinesin adaptor BLOC-one-related complex (BORC) to identify a subset of axonal mRNAs that depend on lysosome-related vesicles for transport. We found that BORC knockout causes depletion of a large group of axonal mRNAs mainly encoding ribosomal and mitochondrial/oxidative phosphorylation proteins. This depletion results in mitochondrial defects and eventually leads to axonal degeneration in human induced pluripotent stem cell (iPSC)-derived and mouse neurons. Pathway analyses of the depleted mRNAs revealed a mechanistic connection of BORC deficiency with common neurodegenerative disorders. These results demonstrate that mRNA transport on lysosome-related vesicles is critical for the maintenance of axonal homeostasis and that its failure causes axonal degeneration.
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Reactive oxygen species, head injury, heat stress and pollution inhibit lysosomal function.
“Examples of such include reactive oxygen species, head injury, heat stress and pollution inhibiting lysosomal function.48”
From The lysosome and proteostatic stress at the intersection of pediatric neurological disorders and adult neurodegenerative diseases (2025) · cites this paper as [48]
The Discussion (page unavailable) describes oxidative damage to mitochondria and impaired mitophagy when axonal lysosomes are absent, but does not say that reactive oxygen species inhibit lysosomal function. Searches for head injury, heat stress, pollution, and oxidative stress did not find a passage linking any of these exposures to lysosomal inhibition. (LLM, conf=0.76)
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Functional cortical neurons and astrocytes from human pluripotent stem cells in 3D culture
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Autophagosomes initiate distally and mature during transport toward the cell soma in primary neurons
Maday, S., Wallace, K. E., & Holzbaur, E. L. F. (2012) · Journal of Cell Biology · doi:10.1083/jcb.201106120 · Cited by 681 · cited 3× · see citing works
“The population of retrograde lysosome-related vesicles includes mature lysosomes, late endosomes, autolysosomes (fusion of lysosomes with autophagosomes) and/or amphisomes (fusion of lysosomes with late endosomes) 15–18 .”
Induction of Autophagy in Axonal Dystrophy and Degeneration
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Lane-Donovan, C., Paredes, M., & Kao, A. W. (2025) · Progress in Neurobiology · doi:10.1016/j.pneurobio.2025.102854 · Cited by 3 · see citing works
- Authors
- De Pace, R., Ghosh, S., Ryan, V. H., Sohn, M., Jarnik, M., Rezvan Sangsari, P., Morgan, N. Y., Dale, R. K., Ward, M. E., & Bonifacino, J. S.
- Affiliations
- National Institutes of Health (US)
- Corresponding author
- Bonifacino, Juan S.
- ORCID
- Venue
- Nature Neuroscience
- Published
- 2024-04-10
- Volume
- 27
- Issue
- 6
- Pages
- 1087-1102
- ISSN
- 1097-6256 (ISSN-L)
- 1546-1726
- PMC
- PMC11156585
- OpenAlex
- W4394683841
- Cited by
- 81
- References
- 5
- Citations by year
- 2026: 33 · 2025: 31 · 2024: 17
- FWCI
- 24.72
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Locations
- Nature Neuroscience (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- Funders
- U.S. Department of Health & Human Services | NIH | Eunice Kennedy Shriver National Institute of Child Health and Human Development (ZIA HD001607, ZIC HD008986)
- U.S. Department of Health & Human Services | NIH | National Institute of General Medical Sciences (NIGMS FI2GM142475)
- U.S. Department of Health & Human Services | NIH | National Institute of Neurological Disorders and Stroke
- Topics
- Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Research and Splicing
- Keywords
- mRNA transport, BLOC-1, axonal degeneration, mitochondrial homeostasis, RNA granules, axonal translation, oxidative phosphorylation, ribosomal proteins, neurodegeneration, iPSC-derived neurons
- MeSH terms
- Animals, Axons, Axonal Transport, Homeostasis, Humans, Lysosomes, Mitochondria, Nerve Degeneration, Neurons, RNA, Messenger, Mice, Knockout, RNA Transport, Mice, Induced Pluripotent Stem Cells
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