Evidence map›Paper›PMID 15467734›Full record

ArticleOncogene2004

Epigenetic inactivation of class II transactivator (CIITA) is associated with the absence of interferon-gamma-induced HLA-DR expression in colorectal and gastric cancer cells.

Ayumi Satoh, Minoru Toyota, Hideyuki Ikeda, Yoshikazu Morimoto, Kimishige Akino, Hiroaki Mita, Hiromu Suzuki, Yasushi Sasaki, Takayuki Kanaseki, Yukio Takamura and 10 more

Abstract read
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In one paragraph

Article in Oncogene, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 57 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
57citing papers in PubMed, 1 pooled it
2.2field-weighted citation impact, top 13% 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

57 citing papers in PubMed, 1 synthesis or guideline pooled it, 103 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

20 authors at 6 institutions in 1 country.

Ayumi SatohFirst Department of Internal Medicine, Sapporo Medical University, Sapporo, Japan.
Minoru Toyota
Hideyuki Ikeda
Yoshikazu Morimoto
Kimishige Akino
Hiroaki Mita
Hiromu Suzuki
Yasushi Sasaki
Takayuki Kanaseki
Yukio Takamura
Hidenobu Soejima
Takeshi Urano
Kazuyoshi Yanagihara
Takao Endo
Yuji Hinoda
Masahiro Fujita
Masao Hosokawa
Noriyuki Sato
Takashi Tokino
Kohzoh Imai
Sapporo Medical University · JPKeiyukai Sapporo Hospital · JPJapan Science and Technology Agency · JPNagoya University · JPSaga Medical School Hospital · JPYamaguchi University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Tightly regulated at the level of transcription, expression of MHC class II molecules varies significantly among gastrointestinal cancers. High levels of MHC class II expression are often associated with a better prognosis, which is indicative of the involvement of CD4+ lymphocytes in tumor suppression, but the molecular mechanism by which MHC class II expression is regulated remains unclear. In the present study, we investigated the expression of one inducible MHC class II molecule, HLA-DR, and its coactivators in a panel of colorectal and gastric cancer cell lines. Interferon-gamma induced expression of HLA-DR in 14 of 20 cell lines tested; the remaining six cell lines did not express HLA-DR. Analysis of the expression of transcription factors and coactivators associated with HLA-DR revealed that the loss of CIITA expression was closely associated with the absence of HLA-DR induction. Moreover, DNA methylation of the 5' CpG island of CIITA-PIV was detected in all cancer cells that lacked CIITA. The methylation and resultant silencing of CIITA-PIV depended on the activities of two DNA methyltransferases, DNMT1 and DNMT3B, and their genetic inactivation restored CIITA-PIV expression. It thus appears that CIITA methylation is a key mechanism that enables some gastrointestinal cancer cells to escape immune surveillance.

Indexed as

Blotting, WesternCD4-Positive T-LymphocytesCell Line, TumorChromatin ImmunoprecipitationColorectal NeoplasmsCpG IslandsDNA-Binding ProteinsDNA, ComplementaryDNA (Cytosine-5-)-Methyltransferase 1DNA (Cytosine-5-)-MethyltransferasesDNA MethylationFlow CytometryGene SilencingHistonesHLA-DR AntigensHumansDNA-Binding ProteinsDNA, ComplementaryDNA (Cytosine-5-)-Methyltransferase 1DNA (Cytosine-5-)-MethyltransferasesDNMT1 protein, humanHistonesHLA-DR AntigensInterferon-gammaLysineMHC class II transactivator proteinNuclear ProteinsRNA, MessengerSTAT1 protein, humanSTAT1 Transcription FactorSulfitesTrans-Activators

Identifiers

PMID15467734
OpenAlexW2126004433

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.