Evidence map›Paper›PMID 34090884›Full record

ArticleGastroenterology2021

Hybrid Stomach-Intestinal Chromatin States Underlie Human Barrett's Metaplasia.

Harshabad Singh, Kyungsik Ha, Jason L Hornick, Shariq Madha, Paloma Cejas, Kunal Jajoo, Pratik Singh, Paz Polak, Hwajin Lee, Ramesh A Shivdasani

Open access · greenAbstract read
In one paragraph

Article in Gastroenterology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
5.2field-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

20 citing papers in PubMed, 32 citations in OpenAlex.

  1. Review
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  4. Prognostic role of claudin-18.2 in intrahepatic cholangiocarcinoma.Virchows Archiv : an international journal of pathology · 2025
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  7. Cellular Origins and Lineage Plasticity in Cancer.Cold Spring Harbor perspectives in medicine · 2024
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  19. High-Resolution ATAC-Seq Analysis of Frozen Clinical Tissues.Methods in molecular biology (Clifton, N.J.) · 2022
    Article
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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 4 institutions in 2 countries.

Harshabad SinghDepartment of Medical Oncology and Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Boston, Massachusetts; Department of Medicine Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts.
Kyungsik HaBiomedical Knowledge Engineering Laboratory, Seoul National University, Seoul, Korea.
Jason L HornickDepartment of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts.
Shariq MadhaDepartment of Medical Oncology and Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Boston, Massachusetts.
Paloma CejasDepartment of Medical Oncology and Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Boston, Massachusetts.
Kunal JajooDepartment of Medicine Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts.
Pratik SinghDepartment of Medical Oncology and Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Boston, Massachusetts; Department of Medicine Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts.
Paz PolakDepartment of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, New York.
Hwajin LeeBiomedical Knowledge Engineering Laboratory, Seoul National University, Seoul, Korea. Electronic address: hwajin2k@gmail.com.
Ramesh A ShivdasaniDepartment of Medical Oncology and Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Boston, Massachusetts; Department of Medicine Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; Harvard Stem Cell Institute, Cambridge, Massachusetts. Electronic address: ramesh_shivdasani@dfci.harvard.edu.
Brigham and Women's Hospital · USDana-Farber Cancer Institute · USSeoul National University · KRIcahn School of Medicine at Mount Sinai · US

Funding

Tissue and Pathology ResourcesP50CA127003 · NCI · DANA-FARBER CANCER INST · PI BASS, ADAM JOEL · 2007 to 2023
$33.2M
Transcriptional control of gut epithelial homeostasis and regenerationR01DK081113 · NIDDK · DANA-FARBER CANCER INST · PI SHIVDASANI, RAMESH A · 2009 to 2022
$5.6M
Transcriptional control and enhancer recruitment in mouse and human intestinal secretory differentiationR01DK082889 · NIDDK · DANA-FARBER CANCER INST · PI Ramesh A Shivdasani · 2010 to 2026
$5.2M
NCI NIH HHS P50 CA127003NIDDK NIH HHS R01 DK081113NIDDK NIH HHS R01 DK082889
6 · The paper itself

Abstract

BACKGROUND &

aimsTissue metaplasia is uncommon in adults because established cis-element programs resist rewiring. In Barrett's esophagus, the distal esophageal mucosa acquires a predominantly intestinal character, with notable gastric features, and is predisposed to developing invasive cancers. We sought to understand the chromatin underpinnings of Barrett's metaplasia and why it commonly displays simultaneous gastric and intestinal properties.

methodsWe profiled cis-regulatory elements with active histone modifications in primary human biopsy materials using chromatin immunoprecipitation followed by DNA sequencing. Mutations in Barrett's esophagus were examined in relation to tissue-specific enhancer landscapes using a random forest machine-learning algorithm. We also profiled open chromatin at single-cell resolution in primary Barrett's biopsy specimens using the assay for transposase-accessible chromatin. We used 1- and 2-color immunohistochemistry to examine protein expression of tissue-restricted genes.

resultsBarrett's esophagus bears epigenome fingerprints of human stomach and intestinal columnar, but not esophageal squamous, epithelia. Mutational patterns were best explained as arising on the epigenome background of active gastric cis-elements, supporting the view that adjoining stomach epithelium is a likely tissue source. Individual cells in Barrett's metaplasia coexpress gastric and intestinal genes, reflecting concomitant chromatin access at enhancers ordinarily restricted to one or the other epithelium. Protein expression of stomach-specific mucins; CLDN18; and a novel gastric marker, ANXA10, showed extensive tissue and subclonal heterogeneity of dual stomach-intestinal cell states.

conclusionsThese findings reveal mixed and dynamic tissue-restricted chromatin states and phenotypic heterogeneity in Barrett's esophagus. Pervasive intragland variation argues against stem-cell governance of this phenotype.

Indexed as

Cell PlasticityChromatin Assembly and DisassemblyEpigenomeBarrett EsophagusCell LineageChromatin Immunoprecipitation SequencingDNA Mutational AnalysisEnhancer Elements, GeneticEpigenomicsEsophageal MucosaGenetic Predisposition to DiseaseHumansImmunohistochemistryMetaplasiaMutationPhenotypeEpigeneticsIntestinal MetaplasiaTissue-Specific Epigenomes

Identifiers

PMID34090884
PMCPMC8380686
OpenAlexW3169509081

What OpenQuestion holds

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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.