The DOI matches its Crossref record; 14 of the 14 references it cites were found in a registry or an index.
Tubular network formation protects mitochondria from autophagosomal degradation during nutrient starvation
Open accessAbstract
Mitochondria are highly dynamic organelles that mediate essential cell functions such as apoptosis and cell-cycle control in addition to their role as efficient ATP generators. Mitochondrial morphology changes are tightly regulated, and their shape can shift between small, fragmented units and larger networks of elongated mitochondria. We demonstrate that mitochondrial elements become significantly elongated and interconnected shortly after nutrient depletion. This mitochondrial morphological shift depends on the type of starvation, with an additive effect observed when multiple nutrients are depleted simultaneously. We further show that starvation-induced mitochondrial elongation is mediated by down-regulation of dynamin-related protein 1 (Drp1) through modulation of two Drp1 phosphorylation sites, leading to unopposed mitochondrial fusion. Finally, we establish that mitochondrial tubulation upon nutrient deprivation protects mitochondria from autophagosomal degradation, which could permit mitochondria to maximize energy production and supply autophagosomal membranes during starvation.
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Citations
Cites
Parkin is recruited selectively to impaired mitochondria and promotes their autophagy
Narendra, D., Tanaka, A., Suen, D.-F., & Youle, R. J. (2008) · The Journal of Cell Biology · doi:10.1083/jcb.200809125 · Cited by 4,026
Fission and selective fusion govern mitochondrial segregation and elimination by autophagy
Twig, G., Elorza, A., Molina, A. J. A., Mohamed, H., Wikstrom, J. D., Walzer, G., Stiles, L., Haigh, S. E., Katz, S., Las, G., et al. (2008) · The EMBO Journal · doi:10.1038/sj.emboj.7601963 · Cited by 3,082 · cited 4×
“Mitochondrial fragmentation and dysfunction have been described as preconditions for autophagy ofmitochondria (mitophagy) under different conditions (21, 27, 36), which led us to investigate whether starvation-induced mitochondrial fusion can prevent mitochondria from being targeted for autophagy.”
BackgroundInfluentialChen, H., Detmer, S. A., Ewald, A. J., Griffin, E. E., Fraser, S. E., & Chan, D. C. (2003) · The Journal of Cell Biology · doi:10.1083/jcb.200211046 · Cited by 2,601
Mitofusin 2 tethers endoplasmic reticulum to mitochondria
de Brito, O. M., & Scorrano, L. (2008) · Nature · doi:10.1038/nature07534 · Cited by 2,442
Rabinowitz, J. D., & White, E. (2010) · Science · doi:10.1126/science.1193497 · Cited by 1,982
During autophagy mitochondria elongate, are spared from degradation and sustain cell viability
Gomes, L. C., Benedetto, G. D., & Scorrano, L. (2011) · Nature Cell Biology · doi:10.1038/ncb2220 · Cited by 1,735
Disruption of Fusion Results in Mitochondrial Heterogeneity and Dysfunction
Chen, H., Chomyn, A., & Chan, D. C. (2005) · Journal of Biological Chemistry · doi:10.1074/jbc.m503062200 · Cited by 1,376 · cited 1×
“Ca transfer (18), cell-cycle regulation (13, 19), and mitochondrial quality control (20, 21) are all closely tied to changes in mitochondrial morphology.”
BackgroundMitotic phosphorylation of dynamin-related GTPase Drp1 participates in mitochondrial fission.
Taguchi, N., Ishihara, N., Jofuku, A., Oka, T., & Mihara, K. (2007) · Journal of Biological Chemistry · doi:10.1074/jbc.m607279200 · Cited by 1,226
Dephosphorylation by calcineurin regulates translocation of Drp1 to mitochondria
Cereghetti, G. M., Stangherlin, A., de Brito, O. M., Chang, C. R., Blackstone, C., Bernardi, P., & Scorrano, L. (2008) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0808249105 · Cited by 1,129
Otera, H., Wang, C., Cleland, M. M., Setoguchi, K., Yokota, S., Youle, R. J., & Mihara, K. (2010) · Journal of Cell Biology · doi:10.1083/jcb.201007152 · Cited by 1,110 · cited 1×
“Fission is mediated by dynamin-related protein 1 (Drp1) (7, 8) and its interaction with binding partners Fis1 and/or mitochondrial fission factor (Mff) (9, 10).”
Background
Cited by
Mitochondrial Fission, Fusion, and Stress
Youle, R. J., & van der Bliek, A. M. (2012) · Science · doi:10.1126/science.1219855 · Cited by 3,674
Mitochondria: In Sickness and in Health
Nunnari, J., & Suomalainen, A. (2012) · Cell · doi:10.1016/j.cell.2012.02.035 · Cited by 3,479
Oxidative stress and autophagy: The clash between damage and metabolic needs
Filomeni, G., De Zio, D., & Cecconi, F. (2015) · Cell Death & Differentiation · doi:10.1038/cdd.2014.150 · Cited by 2,195
The pathways of mitophagy for quality control and clearance of mitochondria
Ashrafi, G., & Schwarz, T. L. (2013) · Cell Death & Differentiation · doi:10.1038/cdd.2012.81 · Cited by 1,900
Mitochondrial form and function
Friedman, J. R., & Nunnari, J. (2014) · Nature · doi:10.1038/nature12985 · Cited by 1,803
Metadata
- Authors
- Rambold, A. S., Kostelecky, B., Elia, N., & Lippincott-Schwartz, J.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 2011-06-06
- Volume
- 108
- Issue
- 25
- Pages
- 10190-10195
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W2037064466
- Cited by
- 1,156
- References
- 14
- FWCI
- 20.34
- Type
- journal article
- Language
- en
- Open access
- green
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- Rambold, A. S., Kostelecky, B., Elia, N., & Lippincott-Schwartz, J. (2011). Tubular network formation protects mitochondria from autophagosomal degradation during nutrient starvation. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1107402108
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