Evidence map›Paper›PMID 28973153›Full record

ArticleHuman molecular genetics2017

Low-dose rapamycin extends lifespan in a mouse model of mtDNA depletion syndrome.

Stephanie E Siegmund, Hua Yang, Rohit Sharma, Martin Javors, Owen Skinner, Vamsi Mootha, Michio Hirano, Eric A Schon

Open access · hybridAbstract read
In one paragraph

Article in Human molecular genetics, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 57 papers.

0numbers the graph read from it
0cells of the map it votes in
57citing papers in PubMed
4.1field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

57 citing papers in PubMed, 89 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 3 institutions in 1 country.

Stephanie E SiegmundDepartment of Cellular, Molecular and Biophysical Studies.
Hua YangDepartment of Neurology.
Rohit SharmaDepartment of Molecular Biology, Massachusetts General Hospital, Boston, MA 02114, USA.
Martin JavorsDepartment of Psychiatry, University of Texas, San Antonio, TX 78229, USA.
Owen SkinnerDepartment of Molecular Biology, Massachusetts General Hospital, Boston, MA 02114, USA.
Vamsi MoothaDepartment of Molecular Biology, Massachusetts General Hospital, Boston, MA 02114, USA.
Michio HiranoDepartment of Neurology.
Eric A SchonDepartment of Neurology.
Massachusetts General Hospital · USColumbia University Irving Medical Center · USThe University of Texas at San Antonio · US

Funding

TRANSGENIC COREP30AG013319 · NIA · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI PETER J HORNSBY · 1995 to 2026
$30.6M
Center for Testing Potential Anti-Aging InterventionsU01AG022307 · NIA · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI RANDY STRONG, Adam Salmon · 2004 to 2026
$26.3M
San Antonio OAIC - Research Education Component (REC)P30AG044271 · NIA · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI Adam Salmon, Elena Volpi · 2015 to 2026
$14.1M
Tech-CoreP01HD080642 · NICHD · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI QUINZII, CATARINA M. · 2014 to 2018
$7.8M
Pharmacologic Treatment of Human Mitochondrial DNA (mtDNA) DiseaseF30NS093798 · NINDS · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI SIEGMUND, STEPHANIE · 2015 to 2018
$188k
NIA NIH HHS P30 AG013319NIA NIH HHS P30 AG044271NIA NIH HHS U01 AG022307NICHD NIH HHS P01 HD080642NINDS NIH HHS F30 NS093798
6 · The paper itself

Abstract

Mitochondrial disorders affecting oxidative phosphorylation (OxPhos) are caused by mutations in both the nuclear and mitochondrial genomes. One promising candidate for treatment is the drug rapamycin, which has been shown to extend lifespan in multiple animal models, and which was previously shown to ameliorate mitochondrial disease in a knock-out mouse model lacking a nuclear-encoded gene specifying an OxPhos structural subunit (Ndufs4). In that model, relatively high-dose intraperitoneal rapamycin extended lifespan and improved markers of neurological disease, via an unknown mechanism. Here, we administered low-dose oral rapamycin to a knock-in (KI) mouse model of authentic mtDNA disease, specifically, progressive mtDNA depletion syndrome, resulting from a mutation in the mitochondrial nucleotide salvage enzyme thymidine kinase 2 (TK2). Importantly, low-dose oral rapamycin was sufficient to extend Tk2KI/KI mouse lifespan significantly, and did so in the absence of detectable improvements in mitochondrial dysfunction. We found no evidence that rapamycin increased survival by acting through canonical pathways, including mitochondrial autophagy. However, transcriptomics and metabolomics analyses uncovered systemic metabolic changes pointing to a potential 'rapamycin metabolic signature.' These changes also implied that rapamycin may have enabled the Tk2KI/KI mice to utilize alternative energy reserves, and possibly triggered indirect signaling events that modified mortality through developmental reprogramming. From a therapeutic standpoint, our results support the possibility that low-dose rapamycin, while not targeting the underlying mtDNA defect, could represent a crucial therapy for the treatment of mtDNA-driven, and some nuclear DNA-driven, mitochondrial diseases.

Indexed as

AnimalsAutophagyDisease Models, AnimalDNA, MitochondrialDose-Response Relationship, DrugElectron Transport Complex IFemaleGene Knock-In TechniquesMaleMiceMitochondriaMitochondrial DiseasesMutationOxidative PhosphorylationSignal TransductionSirolimusDNA, MitochondrialElectron Transport Complex ISirolimusThymidine Kinasethymidine kinase 2

Identifiers

PMID28973153
PMCPMC5886265
OpenAlexW2753910921

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.