Evidence map›Paper›PMID 33811704›Full record

ArticleFASEB journal : official publication of the Federation of American Societies for Experimental Biology2021

Unique metabolic phenotype and its transition during maturation of juvenile male germ cells.

Anna Laura Voigt, Douglas Andrew Kondro, Diana Powell, Hanna Valli-Pulaski, Mark Ungrin, Jan-Bernd Stukenborg, Claudia Klein, Ian A Lewis, Kyle E Orwig, Ina Dobrinski

Open access · greenAbstract read
In one paragraph

Article in FASEB journal : official publication of the Federation of American Societies for Experimental Biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
4.4field-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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 28 citations in OpenAlex.

  1. Metabolic transitions define spermatogonial stem cell maturation.Human reproduction (Oxford, England) · 2022
    Pooled it
  2. In vitro models of the male reproductive system: applications for developmental and reproductive toxicology.Toxicological sciences : an official journal of the Society of Toxicology · 2025
    Review
  3. Review
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
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  11. Sertoli cell and spermatogonial development in pigs.Journal of animal science and biotechnology · 2022
    Article
  12. Article
  13. Review
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

10 authors at 3 institutions in 3 countries.

Anna Laura VoigtDepartment of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada.ORCID 0000-0003-3970-6011
Douglas Andrew KondroDepartment of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada.
Diana PowellDepartment of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada.
Hanna Valli-PulaskiDepartment of Obstetrics, Gynecology and Reproductive Sciences, Magee-Womens Research Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.ORCID 0000-0001-8092-0066
Mark UngrinDepartment of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada.ORCID 0000-0002-7410-1491
Jan-Bernd StukenborgNORDFERTIL Research Lab Stockholm, Childhood Cancer Research Unit, Department of Women's and Children's Health, Karolinska Institutet and Karolinska University Hospital, Solna, Sweden.ORCID 0000-0002-2839-1870
Claudia KleinDepartment of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada.
Ian A LewisDepartment of Biological Sciences, Faculty of Sciences, University of Calgary, Calgary, AB, Canada.ORCID 0000-0002-5753-499X
Kyle E OrwigDepartment of Obstetrics, Gynecology and Reproductive Sciences, Magee-Womens Research Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.ORCID 0000-0002-7952-8419
Ina DobrinskiDepartment of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada.ORCID 0000-0002-0695-2606
University of Calgary · CAUniversity of Pittsburgh · USKarolinska University Hospital · SE

Funding

Transplantation of Testis Stem Cells in Large AnimalsR01OD016575 · OD · UNIVERSITY OF CALGARY · PI DOBRINSKI, INA · 2013 to 2024
$2.4M
Improving Fertility Preservation in Boys with CancerR01HD092084 · NICHD · MAGEE-WOMEN'S RES INST AND FOUNDATION · PI ORWIG, KYLE EDWIN · 2017 to 2019
$1.1M
NICHD NIH HHS R01 HD092084NIH HHS R01 OD016575
6 · The paper itself

Abstract

Human male reproductive development has a prolonged prepubertal period characterized by juvenile quiescence of germ cells with immature spermatogonial stem cell (SSC) precursors (gonocytes) present in the testis for an extended period of time. The metabolism of gonocytes is not defined. We demonstrate with mitochondrial ultrastructure studies via TEM and IHC and metabolic flux studies with UHPLC-MS that a distinct metabolic transition occurs during the maturation to SSCs. The mitochondrial ultrastructure of prepubertal human spermatogonia is shared with prepubertal pig spermatogonia. The metabolism of early prepubertal porcine spermatogonia (gonocytes) is characterized by the reliance on OXPHOS fuelled by oxidative decarboxylation of pyruvate. Interestingly, at the same time, a high amount of the consumed pyruvate is also reduced and excreted as lactate. With maturation, prepubertal spermatogonia show a metabolic shift with decreased OXHPOS and upregulation of the anaerobic metabolism-associated uncoupling protein 2 (UCP2). This shift is accompanied with stem cell specific promyelocytic leukemia zinc finger protein (PLZF) protein expression and glial cell-derived neurotropic factor (GDNF) pathway activation. Our results demonstrate that gonocytes differently from mature spermatogonia exhibit unique metabolic demands that must be attained to enable their maintenance and growth in vitro.

Indexed as

Gene Expression RegulationOxidative StressAnimalsGerm CellsGlycolysisHumansMaleMembrane Potential, MitochondrialPhenotypeStem CellsSwineTestismaturationmetabolismprepubertal spermatogoniareactive oxygen species

Identifiers

PMID33811704
PMCPMC8212869
OpenAlexW3143714690

What OpenQuestion holds

Textmetadata
LicenceTDM
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.