Cited by 173Mitochondrial Function and PathologyAutophagy in Disease and TherapyGenetics, Aging, and Longevity in Model Organisms

The retrograde response: When mitochondrial quality control is not enough

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Jazwinski, S. Michal·2013·Biochimica et Biophysica Acta (BBA) - Molecular Cell Research

Abstract

Mitochondria are responsible for generating adenosine triphosphate (ATP) and metabolic intermediates for biosynthesis. These dual functions require the activity of the electron transport chain in the mitochondrial inner membrane. The performance of these electron carriers is imperfect, resulting in release of damaging reactive oxygen species. Thus, continued mitochondrial activity requires maintenance. There are numerous means by which this quality control is ensured. Autophagy and selective mitophagy are among them. However, the cell inevitably must compensate for declining quality control by activating a variety of adaptations that entail the signaling of the presence of mitochondrial dysfunction to the nucleus. The best known of these is the retrograde response. This signaling pathway is triggered by the loss of mitochondrial membrane potential, which engages a series of signal transduction proteins, and it culminates in the induction of a broad array of nuclear target genes. One of the hallmarks of the retrograde response is its capacity to extend the replicative life span of the cell. The retrograde signaling pathway interacts with several other signaling pathways, such as target of rapamycin (TOR) and ceramide signaling. All of these pathways respond to stress, including metabolic stress. The retrograde response is also linked to both autophagy and mitophagy at the gene and protein activation levels. Another quality control mechanism involves age-asymmetry in the segregation of dysfunctional mitochondria. One of the processes that impinge on this age-asymmetry is related to biogenesis of the organelle. Altogether, it is apparent that mitochondrial quality control constitutes a complex network of processes, whose full understanding will require a systems approach. This article is part of a Special Issue entitled: Protein Import and Quality Control in Mitochondria and Plastids.

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Crossref · 10.1016/j.bbamcr.2012.02.010

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  • In eukaryotic cells, Rtg3, working with Rtg1, acts as a retrograde regulator to initiate transcription of a group of genes for galactose catabolism in response to dysfunctional mitochondrial respiration.

    “In eukaryotic cells, Rtg3, working with Rtg1, acts as a retrograde regulator to initiate the transcription of a group of genes for galactose catabolism in response to dysfunctional mitochondrial respiration (30).”

    From Divergent mitochondrial responses and metabolic signal pathways secure the azole resistance in Crabtree-positive and negative <i>Candida</i> species (2024) · cites this paper as [30]

    Section 2.2 describes Rtg1–Rtg3 as a transcription factor that enters the nucleus when the retrograde response is activated and binds promoters of its target genes. Section 2.6 links that response to mitochondrial dysfunction in yeast. The cited passages do not identify genes for galactose catabolism as its targets, so that specific part of the claim is unsupported. (LLM, conf=0.87)

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Authors
Jazwinski, S. M.
Affiliations
Tulane University (US)
Corresponding author
Jazwinski, S. Michal
Venue
Biochimica et Biophysica Acta (BBA) - Molecular Cell Research
Publisher
Elsevier BV
Published
2013-02
Volume
1833
Issue
2
Pages
400-409
ISSN
0167-4889 (ISSN-L)
OpenAlex
W2117905612
Cited by
172
References
130
Citations by year
2026: 6 · 2025: 4 · 2024: 18 · 2023: 5 · 2022: 12 · 2021: 18 · 2020: 13 · 2019: 6 · 2018: 14 · 2017: 14 · 2016: 14 · 2015: 22 · 2014: 13 · 2013: 10 · 2012: 3
FWCI
1.40
Type
journal article
Language
en
Open access
Locations
  • Biochimica et Biophysica Acta (BBA) - Molecular Cell Research (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute on Aging of the National Institutes of Health
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
Keywords
retrograde response, mitochondrial quality control, mitochondrial dysfunction, mitochondrial membrane potential, nuclear signaling, autophagy, mitophagy, TOR signaling, ceramide signaling, metabolic stress, replicative lifespan, mitochondrial segregation, mitochondrial biogenesis, reactive oxygen species, electron transport chain
MeSH terms
Mitochondria, Quality Control, Saccharomyces cerevisiae, Signal Transduction, Protein Transport, Saccharomyces cerevisiae Proteins

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