Evidence map›Paper›PMID 12023300›Full record

ArticleGenes & development2002

Oct4 distribution and level in mouse clones: consequences for pluripotency.

Michele Boiani, Sigrid Eckardt, Hans R Schöler, K John McLaughlin

Open access · diamondAbstract read
In one paragraph

Article in Genes & development, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 121 papers.

0numbers the graph read from it
0cells of the map it votes in
121citing 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

121 citing papers in PubMed, 516 citations in OpenAlex.

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  11. Pleiotropic effects of DCLK1 in cancer and cancer stem cells.Frontiers in molecular biosciences · 2022
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  12. Lipid Signaling During Gamete Maturation.Frontiers in cell and developmental biology · 2022
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  18. Manipulating the Epigenome in Nuclear Transfer Cloning: Where, When and How.International journal of molecular sciences · 2020
    Review
  19. Article
  20. Article

61 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors at 1 institution in 1 country.

Michele BoianiGermline Development Group, Center for Animal Transgenesis and Germ Cell Research, The School of Veterinary Medicine, University of Pennsylvania, New Bolton Center, Kennett Square, Pennsylvania 19348, USA.
Sigrid Eckardt
Hans R Schöler
K John McLaughlin
University of Pennsylvania · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Somatic cell clones often fail at a developmental stage coincident with commencement of differentiation. The transcription factor Oct4 is expressed during cleavage stages and is essential for the differentiation of the blastocyst. Oct4 expression becomes restricted to the inner cell mass and epiblast. After gastrulation Oct4 is active only in germ cells and is silent in somatic cells. Here, Oct4 and an Oct4-GFP transgene were used as markers for which gene reprogramming could be directly related to the developmental potential of somatic cell clones. Cumulus cell clones initiated Oct4 expression at the correct stage but showed an incorrect spatial expression in the majority of blastocysts. The ability of clones to form outgrowths was reduced, and the outgrowths had low or even undetectable levels of Oct4 RNA or GFP. The quality of GFP signals in blastocysts correlated with the ability to generate outgrowths that maintain GFP expression and the frequency of embryonic stem (ES) cell derivation. Abnormal Oct4 expression in clones is either directly or indirectly caused by reprogramming errors and is indicative of a general failure to reset the genetic program. The abnormal Oct4 expression may be associated with aberrant expression of other crucial developmental genes, leading to abnormalities at various embryonic stages. Regardless of other genes, the variations observed in Oct4 levels alone account for the majority of failures currently observed for somatic cell cloning.

Indexed as

AnimalsBlastocystCell DifferentiationCell DivisionCell NucleusCell SurvivalClone CellsDNA-Binding ProteinsEmbryo, MammalianFemaleFertilization in VitroGreen Fluorescent ProteinsLuminescent ProteinsMaleMiceMice, Inbred C3HDNA-Binding ProteinsGreen Fluorescent ProteinsLuminescent ProteinsOctamer Transcription Factor-3Pou5f1 protein, mouseRNA, MessengerTranscription Factors

Identifiers

PMID12023300
PMCPMC186284
OpenAlexW2166649689

What OpenQuestion holds

Textmetadata
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.