Evidence map›Paper›PMID 38770789›Full record

ArticleJournal of cellular physiology2024

Ablation of Sam50 is associated with fragmentation and alterations in metabolism in murine and human myotubes.

Bryanna Shao, Mason Killion, Ashton Oliver, Chia Vang, Faben Zeleke, Kit Neikirk, Zer Vue, Edgar Garza-Lopez, Jian-Qiang Shao, Margaret Mungai and 26 more

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Journal of cellular physiology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
–field-weighted citation impact
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

5 citing papers in PubMed.

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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

36 authors.

Bryanna ShaoDepartment of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA.
Mason KillionDepartment of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA.
Ashton OliverDepartment of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA.
Chia VangDepartment of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA.
Faben ZelekeDepartment of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA.
Kit NeikirkDepartment of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA.
Zer VueDepartment of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA.
Edgar Garza-LopezDepartment of Internal Medicine, University of Iowa, Iowa City, Iowa, USA.
Jian-Qiang ShaoCentral Microscopy Research Facility, University of Iowa, Iowa City, Iowa, USA.
Margaret MungaiDepartment of Internal Medicine, University of Iowa, Iowa City, Iowa, USA.
Jacob LamDepartment of Internal Medicine, University of Iowa, Iowa City, Iowa, USA.
Qiana WilliamsDepartment of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA.
Christopher T AltamuraDepartment of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA.
Aaron WhitesideDepartment of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA.
Kinuthia KabugiDepartment of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA.
Jessica McKenzieDepartment of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA.
Maria EzedimmaDepartment of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA.
Han LeDepartment of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA.
Alice KohDepartment of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA.
Estevão ScudeseDepartment of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA.
Larry VangDepartment of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA.
Andrea G MarshallDepartment of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA.
Amber CrabtreeDepartment of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA.
Janelle I TanghalMorehouse School of Medicine, Atlanta, Georgia, USA.
Dominique StephensDepartment of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA.
Ho-Jin KohDepartment of Biological Sciences, Tennessee State University, Nashville, Tennessee, USA.
Brenita C JenkinsDepartment of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, Pennsylvania, USA.
Sandra A MurrayDepartment of Cell Biology, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
Anthonya T CooperDepartment of Cell Biology, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
Clintoria WilliamsDepartment of Neuroscience, Cell Biology and Physiology, Wright State University, Dayton, Ohio, USA.
Steven M DamoDepartment of Life and Physical Sciences, Fisk University, Nashville, Tennessee, USA.
Melanie R McReynoldsDepartment of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, Pennsylvania, USA.
Jennifer A GaddyDepartment of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA.
Celestine N WanjallaDepartment of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA.ORCID 0000-0001-9159-5414
Heather K BeasleyDepartment of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA.
Antentor HintonDepartment of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA.ORCID 0000-0002-7730-952X

Funding

VANDERBILT UNIVERSITY CTSA FOR PEDIATRIC RESEARCHUL1RR024975 · NCRR · VANDERBILT UNIVERSITY · PI BERNARD, GORDON RAPHAEL · 2007 to 2011
$45.7M
The Vanderbilt Institute for Clinical and Translational Research (VICTR)UL1TR000445 · NCATS · VANDERBILT UNIVERSITY MEDICAL CENTER · PI BERNARD, GORDON RAPHAEL · 2012 to 2016
$41.4M
Vanderbilt Diabetes Research CenterP30DK020593 · NIDDK · VANDERBILT UNIVERSITY MEDICAL CENTER · PI DAVID H WASSERMAN · 2012 to 2026
$29.3M
MULTIDISCIPLINARY TRAINING IN MOLECULAR ENDOCRINOLOGYT32DK007563 · NIDDK · VANDERBILT UNIVERSITY · PI Richard M O'Brien · 1988 to 2026
$15.9M
PRIDE: Functional and Translational Genomics of Blood DisordersR25HL106365 · NHLBI · AUGUSTA UNIVERSITY · PI PACE, BETTY SUE · 2010 to 2024
$5.2M
Integrated Training in Engineering and DiabetesT32DK101003 · NIDDK · VANDERBILT UNIVERSITY · PI Jamey D. Young · 2014 to 2026
$3.9M
Determining the contribution of zinc deficiency to perinatal Group B Streptococcus infectionsR01HD090061 · NICHD · VANDERBILT UNIVERSITY MEDICAL CENTER · PI ARONOFF, DAVID M, GADDY, JENNIFER A · 2017 to 2021
$2.5M
Mechanisms of the Renoprotective Properties of Zinc Supplementation in Mouse Models of Chronic Kidney DiseaseR01DK133698 · NIDDK · WRIGHT STATE UNIVERSITY · PI WILLIAMS, CLINTORIA RICHARDS · 2022 to 2025
$1.9M
Anti-cytomegalovirus Immune Responses in Atherosclerotic Cardiovascular Disease in Persons Living with HIVK23HL156759 · NHLBI · VANDERBILT UNIVERSITY MEDICAL CENTER · PI WANJALLA, CELESTINE N · 2021 to 2025
$860k
Role of Calcineurin Isoforms in Renal Regulation of Blood PressureR21DK119879 · NIDDK · WRIGHT STATE UNIVERSITY · PI WILLIAMS, CLINTORIA RICHARDS · 2018 to 2020
$630k
Toxicant Exposure Impacts Host-pathogen interactions within the Reproductive TractI01BX005352 · VA · VETERANS HEALTH ADMINISTRATION · PI GADDY, JENNIFER A · 2021 to 2024
–
BLRD VA I01 BX005352Doris Duke Charitable Foundation 2021193NCATS NIH HHS UL1 TR000445NCRR NIH HHS UL1 RR024975NHLBI NIH HHS K23 HL156759NHLBI NIH HHS R25 HL106365NICHD NIH HHS R01 HD090061NIDDK NIH HHS P30 DK020593NIDDK NIH HHS R01 DK133698NIDDK NIH HHS R21 DK119879NIDDK NIH HHS T32 DK007563NIDDK NIH HHS T32 DK101003
6 · The paper itself

Abstract

The sorting and assembly machinery (SAM) Complex is responsible for assembling β-barrel proteins in the mitochondrial membrane. Comprising three subunits, Sam35, Sam37, and Sam50, the SAM complex connects the inner and outer mitochondrial membranes by interacting with the mitochondrial contact site and cristae organizing system complex. Sam50, in particular, stabilizes the mitochondrial intermembrane space bridging (MIB) complex, which is crucial for protein transport, respiratory chain complex assembly, and regulation of cristae integrity. While the role of Sam50 in mitochondrial structure and metabolism in skeletal muscle remains unclear, this study aims to investigate its impact. Serial block-face-scanning electron microscopy and computer-assisted 3D renderings were employed to compare mitochondrial structure and networking in Sam50-deficient myotubes from mice and humans with wild-type (WT) myotubes. Furthermore, autophagosome 3D structure was assessed in human myotubes. Mitochondrial metabolic phenotypes were assessed using Gas Chromatography-Mass Spectrometry-based metabolomics to explore differential changes in WT and Sam50-deficient myotubes. The results revealed increased mitochondrial fragmentation and autophagosome formation in Sam50-deficient myotubes compared to controls. Metabolomic analysis indicated elevated metabolism of propanoate and several amino acids, including ß-Alanine, phenylalanine, and tyrosine, along with increased amino acid and fatty acid metabolism in Sam50-deficient myotubes. Furthermore, impairment of oxidative capacity was observed upon Sam50 ablation in both murine and human myotubes, as measured with the XF24 Seahorse Analyzer. Collectively, these findings support the critical role of Sam50 in establishing and maintaining mitochondrial integrity, cristae structure, and mitochondrial metabolism. By elucidating the impact of Sam50-deficiency, this study enhances our understanding of mitochondrial function in skeletal muscle.

Indexed as

Muscle Fibers, SkeletalAnimalsAutophagyHumansMiceMice, KnockoutMitochondriaMitochondrial MembranesMitochondrial Precursor Protein Import Complex ProteinsMitochondrial ProteinsMitochondria, MuscleMitochondrial Precursor Protein Import Complex ProteinsMitochondrial ProteinsSAMM50 protein, human3D reconstructionMICOSmitochondriaSam50SAM complex

Identifiers

PMID38770789
PMCPMC11324413

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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.