Evidence map›Paper›PMID 36661306›Full record

ArticleeLife2023

A CRISPR screen in intestinal epithelial cells identifies novel factors for polarity and apical transport.

Katharina M C Klee, Michael W Hess, Michael Lohmüller, Sebastian Herzog, Kristian Pfaller, Thomas Müller, Georg F Vogel, Lukas A Huber

Open access · goldAbstract read
In one paragraph

Article in eLife, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
2.2field-weighted citation impact, top 12% 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

4 citing papers in PubMed, 7 citations in OpenAlex.

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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

8 authors at 2 institutions in 2 countries.

Katharina M C Klee *Institute of Cell Biology, Medical University of Innsbruck, Innsbruck, Austria.
Michael W Hess *Institute of Histology and Embryology, Medical University of Innsbruck, Innsbruck, Austria.ORCID 0000-0002-5154-3553
Michael LohmüllerInstitute of Developmental Immunology, Medical University of Innsbruck, Innsbruck, Austria.ORCID 0000-0002-7712-3143
Sebastian HerzogInstitute of Developmental Immunology, Medical University of Innsbruck, Innsbruck, Austria.
Kristian PfallerInstitute of Histology and Embryology, Medical University of Innsbruck, Innsbruck, Austria.
Thomas MüllerDepartment of Paediatrics I, Medical University of Innsbruck, Innsbruck, Austria.
Georg F VogelInstitute of Cell Biology, Medical University of Innsbruck, Innsbruck, Austria.ORCID 0000-0002-2515-4490
Lukas A HuberInstitute of Cell Biology, Medical University of Innsbruck, Innsbruck, Austria.ORCID 0000-0003-1116-2120
Innsbruck Medical University · ATUniversität Innsbruck · AT

Funding

Austrian Science Fund FWF P35805-B
6 · The paper itself

Abstract

Epithelial polarization and polarized cargo transport are highly coordinated and interdependent processes. In our search for novel regulators of epithelial polarization and protein secretion, we used a genome-wide CRISPR/Cas9 screen and combined it with an assay based on fluorescence-activated cell sorting (FACS) to measure the secretion of the apical brush-border hydrolase dipeptidyl peptidase 4 (DPP4). In this way, we performed the first CRISPR screen to date in human polarized epithelial cells. Using high-resolution microscopy, we detected polarization defects and mislocalization of DPP4 to late endosomes/lysosomes after knockout of TM9SF4, anoctamin 8, and ARHGAP33, confirming the identification of novel factors for epithelial polarization and apical cargo secretion. Thus, we provide a powerful tool suitable for studying polarization and cargo secretion in epithelial cells. In addition, we provide a dataset that serves as a resource for the study of novel mechanisms for epithelial polarization and polarized transport and facilitates the investigation of novel congenital diseases associated with these processes.

Indexed as

Dipeptidyl Peptidase 4Epithelial CellsCell PolarityHumansIntestinesMembrane ProteinsMicrovilliProtein TransportDipeptidyl Peptidase 4Membrane ProteinsTM9SF4 protein, humancell biologyCRISPRelectron microscopyepithelial polarityhumanloss-of-function screenmembrane transportmicrovillus inclusion disease

Identifiers

PMID36661306
PMCPMC9889089
OpenAlexW4317567186

What Socratic 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 Socratic graph.