Evidence map›Paper›PMID 22232066›Full record

ArticleStem cells (Dayton, Ohio)2012

The in vivo response of stem and other undifferentiated spermatogonia to the reversible inhibition of glial cell line-derived neurotrophic factor signaling in the adult.

Joseph Savitt, Dolly Singh, Chao Zhang, Liang-Chin Chen, Janet Folmer, Kevan M Shokat, William W Wright

Open access · bronzeAbstract read
In one paragraph

Article in Stem cells (Dayton, Ohio), 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
6.5field-weighted citation impact, top 4% 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

18 citing papers in PubMed, 37 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Review
  8. Article
  9. CDK2 kinase activity is a regulator of male germ cell fate.Development (Cambridge, England) · 2019
    Article
  10. Article
  11. Article
  12. Article
  13. Spermatogenesis: The Commitment to Meiosis.Physiological reviews · 2016
    Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
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

7 authors at 3 institutions in 1 country.

Joseph SavittDepartment of Neurology, Johns Hopkins School of Medicine, Institute for Cell Engineering, Baltimore, Maryland 21205, USA.
Dolly Singh
Chao Zhang
Liang-Chin Chen
Janet Folmer
Kevan M Shokat
William W Wright
Johns Hopkins University · USHoward Hughes Medical Institute · USUniversity of California, San Francisco · US

Funding

Using chemical genetics to investigate mechanisms of anesthetic actionR01EB001987 · NIBIB · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI SHOKAT, KEVAN M. · 2003 to 2012
$2.9M
Regulation of Stem Spermatogonia in the Mature TestisR01HD074542 · NICHD · JOHNS HOPKINS UNIVERSITY · PI WRIGHT, WILLIAM WALLACE · 2014 to 2016
$1.2M
Development of GDNF Receptor Conditional Knockout MiceK08NS052624 · NINDS · JOHNS HOPKINS UNIVERSITY · PI SAVITT, JOSEPH MARK · 2005 to 2009
$880k
Howard Hughes Medical InstituteNIBIB NIH HHS R01 EB001987NICHD NIH HHS R01 HD074542NINDS NIH HHS K08 NS052624PHS HHS U54055740
6 · The paper itself

Abstract

Maintaining adequate numbers of spermatogonial stem cells is required for the production of the millions of sperm required for male fertility. To date, however, the mechanisms that regulate the size of this pool in the adult are poorly defined. Glial cell line-derived neurotrophic factor (GDNF) is required for establishing this pool in the prepubertal animal, but its in vivo function in the normal adult testis has never been examined directly. We used a chemical-genetic approach to address this issue. We generated mice carrying a single amino acid mutation (V805A) in Ret, the kinase subunit of the GDNF receptor. This mutation does not affect normal GDNF signaling but renders it susceptible to inhibition by the ATP competitive inhibitor, NA-PP1. When GDNF signaling was blocked in adults for 11 days, only a few cells remained that expressed the stem spermatogonial markers, Gfrα1 and Zbtb16, and testicular Ret mRNA content was reduced markedly. These decreases were associated with depletion of functional stem spermatogonia; some were lost when GDNF signaling was inhibited for only 2 days while others survived for up to 11 days. However, when signaling was restored, the remaining stem cells proliferated, initiating tissue restoration. In conclusion, these results provide the first direct proof that GDNF acutely regulates the number of spermatogonial stem cells in the normal adult testis. Additionally, these results demonstrate different sensitivities among subpopulation of these stem cells to inhibition of GDNF signaling.

Indexed as

Cell DifferentiationSignal TransductionAgingAmino Acid SubstitutionAnimalsBiomarkersGlial Cell Line-Derived Neurotrophic FactorMaleMiceProto-Oncogene Proteins c-retSpermatogoniaStem CellsTestisBiomarkersGlial Cell Line-Derived Neurotrophic FactorProto-Oncogene Proteins c-ret

Identifiers

PMID22232066
PMCPMC3894909
OpenAlexW1980647554

What OpenQuestion holds

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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.