Evidence map›Paper›PMID 28339678›Full record

ArticleBiology of reproduction2017

DDX4-EGFP transgenic rat model for the study of germline development and spermatogenesis.

Kathrin Gassei, Yi Sheng, Adetunji Fayomi, Payal Mital, Meena Sukhwani, Chih-Cheng Lin, Karen A Peters, Andrew Althouse, Hanna Valli, Kyle E Orwig

Open access · bronzeAbstract read
In one paragraph

Article in Biology of reproduction, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
2.1field-weighted citation impact, top 14% 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

9 citing papers in PubMed, 18 citations in OpenAlex.

  1. Article
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  6. Molecular phenotyping of domestic cat (Theriogenology wild · 2023
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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

10 authors at 6 institutions in 3 countries.

Kathrin GasseiDepartment of Obstetrics, Gynecology and Reproductive Sciences and Magee-Womens Research Institute, University of Pittsburgh School of Medicine, Pittsburgh, USA.
Yi ShengDepartment of Obstetrics, Gynecology and Reproductive Sciences and Magee-Womens Research Institute, University of Pittsburgh School of Medicine, Pittsburgh, USA.
Adetunji Fayomi
Payal MitalSawai Man Singh Medical College and Hospital, Jaipur, India.
Meena SukhwaniDepartment of Obstetrics, Gynecology and Reproductive Sciences and Magee-Womens Research Institute, University of Pittsburgh School of Medicine, Pittsburgh, USA.
Chih-Cheng LinSchool of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China.
Karen A PetersBiology Department, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
Andrew AlthouseHeart and Vascular Institute, University of Pittsburgh Medical Center, Pittsburgh, PA, USA.
Hanna ValliDepartment of Molecular Genetics and Developmental Biology Graduate Program, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA.
Kyle E OrwigDepartment of Obstetrics, Gynecology and Reproductive Sciences and Magee-Womens Research Institute, University of Pittsburgh School of Medicine, Pittsburgh, USA.
University of Pittsburgh · USHong Kong Baptist University · HKMagee-Womens Research Institute · USSawai ManSingh Medical College and Hospital · INUniversity of North Carolina at Chapel Hill · USUniversity of Pittsburgh Medical Center · US

Funding

Transplant CoreP01HD075795 · NICHD · MAGEE-WOMEN'S RES INST AND FOUNDATION · PI ORWIG, KYLE EDWIN · 2014 to 2018
$7.0M
Characterization of male germline stem cells in a rhesus model of infertilityR01HD055475 · NICHD · MAGEE-WOMEN'S RES INST AND FOUNDATION · PI ORWIG, KYLE EDWIN · 2008 to 2012
$3.5M
Male germline modification in ratsR01RR018500 · NCRR · MAGEE-WOMEN'S RES INST AND FOUNDATION · PI ORWIG, KYLE E · 2003 to 2007
$1.9M
Knockout/Knockin Rats Using Zinc Finger Nucleases and Homologous RecombinationR21RR031300 · NCRR · MAGEE-WOMEN'S RES INST AND FOUNDATION · PI SHENG, YI · 2010 to 2011
$432k
NCRR NIH HHS R01 RR018500NCRR NIH HHS R21 RR031300NICHD NIH HHS P01 HD075795NICHD NIH HHS R01 HD055475
6 · The paper itself

Abstract

Spermatogonial stem cells (SSC) are essential for spermatogenesis and male fertility. In addition, these adult tissue stem cells can be used as vehicles for germline modification in animal models and may have application for treating male infertility. To facilitate the investigation of SSCs and germ lineage development in rats, we generated a DEAD-box helicase 4 (DDX4) (VASA) promoter-enhanced green fluorescent protein (EGFP) reporter transgenic rat. Quantitative real-time polymerase chain reaction and immunofluorescence confirmed that EGFP was expressed in the germ cells of the ovaries and testes and was absent in somatic cells and tissues. Germ cell transplantation demonstrated that the EGFP-positive germ cell population from DDX4-EGFP rat testes contained SSCs capable of establishing spermatogenesis in experimentally infertile mouse recipient testes. EGFP-positive germ cells could be easily isolated by fluorescence-activated cells sorting, while simultaneously removing testicular somatic cells from DDX4-EGFP rat pup testes. The EGFP-positive fraction provided an optimal cell suspension to establish rat SSC cultures that maintained long-term expression of zinc finger and BTB domain containing 16 (ZBTB16) and spalt-like transcription factor 4 (SALL4), two markers of mouse SSCs that are conserved in rats. The novel DDX4-EGFP germ cell reporter rat described here combined with previously described GCS-EGFP rats, rat SSC culture and gene editing tools will improve the utility of the rat model for studying stem cells and germ lineage development.

Indexed as

Models, AnimalSpermatogenesisAdult Germline Stem CellsAnimalsCells, CulturedDEAD-box RNA HelicasesFemaleGenes, ReporterGerm CellsGreen Fluorescent ProteinsMalePromoter Regions, GeneticRats, Sprague-DawleyRats, TransgenicDdx4 protein, ratDEAD-box RNA Helicasesenhanced green fluorescent proteinGreen Fluorescent ProteinsDDX4germlineratsspermatogenesisspermatogonial stem cellstransgenesisVASA

Identifiers

PMID28339678
PMCPMC5803776
OpenAlexW2589765343

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.