Evidence map›Paper›PMID 35065923›Full record

ArticleJournal of lipid research2022

Lipid droplet-mitochondria coupling via perilipin 5 augments respiratory capacity but is dispensable for FA oxidation.

Benedikt Kien, Stephanie Kolleritsch, Natalia Kunowska, Christoph Heier, Gabriel Chalhoub, Anna Tilp, Heimo Wolinski, Ulrich Stelzl, Guenter Haemmerle

Open access · goldAbstract read
In one paragraph

Article in Journal of lipid research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed
7.9field-weighted citation impact, top 2% 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

48 citing papers in PubMed, 63 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

9 authors at 1 institution in 1 country.

Benedikt KienInstitute of Molecular Biosciences, University of Graz, Graz, Austria.
Stephanie KolleritschInstitute of Molecular Biosciences, University of Graz, Graz, Austria.
Natalia KunowskaDepartment of Pharmaceutical Chemistry, Institute of Pharmaceutical Sciences, University of Graz, Graz, Austria.
Christoph HeierInstitute of Molecular Biosciences, University of Graz, Graz, Austria; BioTechMed-Graz, University of Graz, Graz University of Technology and Medical University of Graz, Graz, Austria; Field of Excellence BioHealth, University of Graz, Graz, Austria.
Gabriel ChalhoubInstitute of Molecular Biosciences, University of Graz, Graz, Austria.
Anna TilpInstitute of Molecular Biosciences, University of Graz, Graz, Austria.
Heimo WolinskiInstitute of Molecular Biosciences, University of Graz, Graz, Austria; Field of Excellence BioHealth, University of Graz, Graz, Austria.
Ulrich StelzlDepartment of Pharmaceutical Chemistry, Institute of Pharmaceutical Sciences, University of Graz, Graz, Austria; BioTechMed-Graz, University of Graz, Graz University of Technology and Medical University of Graz, Graz, Austria; Field of Excellence BioHealth, University of Graz, Graz, Austria.
Guenter HaemmerleInstitute of Molecular Biosciences, University of Graz, Graz, Austria; BioTechMed-Graz, University of Graz, Graz University of Technology and Medical University of Graz, Graz, Austria; Field of Excellence BioHealth, University of Graz, Graz, Austria. Electronic address: guenter.haemmerle@uni-graz.at.
University of Graz · AT

Funding

Austrian Science Fund FWF W 1226
6 · The paper itself

Abstract

Disturbances in lipid homeostasis can cause mitochondrial dysfunction and lipotoxicity. Perilipin 5 (PLIN5) decorates intracellular lipid droplets (LDs) in oxidative tissues and controls triacylglycerol (TG) turnover via its interactions with adipose triglyceride lipase and the adipose triglyceride lipase coactivator, comparative gene identification-58. Furthermore, PLIN5 anchors mitochondria to the LD membrane via the outermost part of the carboxyl terminus. However, the role of this LD-mitochondria coupling (LDMC) in cellular energy catabolism is less established. In this study, we investigated the impact of PLIN5-mediated LDMC in comparison to disrupted LDMC on cellular TG homeostasis, FA oxidation, mitochondrial respiration, and protein interaction. To do so, we established PLIN5 mutants deficient in LDMC whilst maintaining normal interactions with key lipolytic players. Radiotracer studies with cell lines stably overexpressing wild-type or truncated PLIN5 revealed that LDMC has no significant impact on FA esterification upon lipid loading or TG catabolism during stimulated lipolysis. Moreover, we demonstrated that LDMC exerts a minor if any role in mitochondrial FA oxidation. In contrast, LDMC significantly improved the mitochondrial respiratory capacity and metabolic flexibility of lipid-challenged cardiomyocytes, which was corroborated by LDMC-dependent interactions of PLIN5 with mitochondrial proteins involved in mitochondrial respiration, dynamics, and cristae organization. Taken together, this study suggests that PLIN5 preserves mitochondrial function by adjusting FA supply via the regulation of TG hydrolysis and that LDMC is a vital part of mitochondrial integrity.

Indexed as

Lipid DropletsPerilipin-5LipaseLipid MetabolismLipolysisMitochondriaPerilipin-1Perilipin-2TriglyceridesLipasePerilipin-1Perilipin-2Perilipin-5Triglyceridesadipose-triglyceride lipasecardiovascular diseasecomparative gene identification-58FA oxidationlipid droplet-mitochondria couplinglipid dropletslipolysislipotoxicitymitochondrial respirationPLIN5

Identifiers

PMID35065923
PMCPMC8953689
OpenAlexW4206930561

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

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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.