Evidence map›Paper›PMID 11013209›Full record

ArticleThe EMBO journal2000

Targeted deletion of keratins 18 and 19 leads to trophoblast fragility and early embryonic lethality.

M Hesse, T Franz, Y Tamai, M M Taketo, T M Magin

Open access · bronzeAbstract read
In one paragraph

Article in The EMBO journal, 2000. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 62 papers.

0numbers the graph read from it
0cells of the map it votes in
62citing papers in PubMed
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

62 citing papers in PubMed, 167 citations in OpenAlex.

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  5. Signal peptide-independent secretion of keratin-19 by pancreatic cancer cells.Proceedings of the National Academy of Sciences of the United States of America · 2025
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2 more citing papers are in PubMed but not listed here.

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

5 authors at 3 institutions in 2 countries.

M HesseInstitut für Genetik, Abteilung Molekulargenetik and Bonner Forum Biomedizin, Universität Bonn, 53117 Bonn, Anatomisches Institut, Universität Bonn, 53115 Bonn, Germany.
T Franz
Y Tamai
M M Taketo
T M Magin
University of Bonn · DEFood Research Institute · JPThe University of Tokyo · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

It has been reported previously that keratin 8 (K8)-deficient mice of one strain die from a liver defect at around E12.5, while those of another strain suffer from colorectal hyperplasia. These findings have generated considerable confusion about the function of K8, K18 and K19 that are co-expressed in the mouse blastocyst and internal epithelia. To resolve this issue, we produced mice doubly deficient for K18 and K19 leading to complete loss of keratin filaments in early mouse development. These embryos died at around day E9.5 with 100% penetrance. The absence of keratins caused cytolysis restricted to trophoblast giant cells, followed by haematomas in the trophoblast layer. Up to that stage, embryonic development proceeded unaffected in the absence of keratin filaments. K18/19-deficient mouse embryos die earlier than any other intermediate filament knockouts reported so far, suggesting that keratins, in analogy to their well established role in epidermis, are essential for the integrity of a specialized embryonic epithelium. Our data also offer a rationale to explore the involvement of keratin mutations in early abortions during human pregnancies.

Indexed as

AnimalsBlotting, WesternCytoskeletonEmbryo, MammalianEpithelial CellsFemaleFetal DeathFluorescent Antibody TechniqueGene DeletionGenotypeGiant CellsIntestinal MucosaIntestinesKeratinsMiceMice, Inbred C57BLKeratins

Identifiers

PMID11013209
PMCPMC302090
OpenAlexW2092180000

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.