Evidence map›Paper›PMID 22563191›Full record

ArticleWorld journal of gastroenterology2012

Aberrant methylation of SPARC in human hepatocellular carcinoma and its clinical implication.

Ye Zhang, Bin Yang, Zhi Du, Tong Bai, Ying-Tang Gao, Yi-Jun Wang, Cheng Lou, Feng-Mei Wang, Yu Bai

Open access · hybridAbstract read
In one paragraph

Article in World journal of gastroenterology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
2.5field-weighted citation impact, top 11% 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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 25 citations in OpenAlex.

  1. Pooled it
  2. Frontiers in cell and developmental biology · 2025
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  11. Epigenetic basis of cancer health disparities: Looking beyond genetic differences.Biochimica et biophysica acta. Reviews on cancer · 2017
    Review
  12. Article
  13. Re-sensitization of 5-FU resistance by SPARC through negative regulation of glucose metabolism in hepatocellular carcinoma.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2015
    Article
  14. Review
  15. Collagen as a double-edged sword in tumor progression.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2014
    Review
  16. Review
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

9 authors at 1 institution in 1 country.

Ye ZhangThird Central Clinical College of Tianjin Medical University, Tianjin 300170, China.
Bin Yang
Zhi Du
Tong Bai
Ying-Tang Gao
Yi-Jun Wang
Cheng Lou
Feng-Mei Wang
Yu Bai
Tianjin Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimTo investigate the methylation status of secreted protein acidic and rich in cysteine (SPARC) in human hepatocellular carcinoma (HCC) and evaluate its clinical implication.

methodsThe methylation status of SPARC was analyzed in one HCC cell line (SMMC-7721) and 60 pairs of HCC and corresponding nontumorous tissues by methylation-specific polymerase chain reaction and bisulfite sequencing. The expression of SPARC mRNA and protein were examined by reverse transcription polymerase chain reaction and immunohistochemistry, respectively. The correlations between the methylation status and the gene expression, the clinicopathological parameters, as well as the prognosis after surgery were analyzed.

resultsIn the SMMC-7721 cell line, the loss of SPARC expression was correlated with the aberrant methylation and could be reactivated by the demethylating agent 5-aza-2'-deoxycytidine. Methylation frequency of SPARC in HCC was significantly higher than that in the corresponding nontumorous tissues (45/60 vs 7/60, P < 0.001), and it was correlated with the pathological classification (P = 0.019). The downregulation of the SPARC mRNA expression in HCC was correlated with the SPARC methylation (P = 0.040). The patients with methylated SPARC had a poorer overall survival than those without methylated SPARC (28.0 mo vs 41.0 mo, P = 0.043).

conclusionAberrant methylation is an important mechanism for SPARC inactivation in HCC and SPARC methylation may be a promising biomarker for the diagnosis and prognosis of HCC.

Indexed as

DNA MethylationAzacitidineCarcinoma, HepatocellularCell Line, TumorDecitabineHumansLiver NeoplasmsOsteonectinPrognosisRNA, MessengerAzacitidineDecitabineOsteonectinRNA, MessengerBiomarkerDiagnosisHepatocellular carcinomaMethylationPrognosisTumor suppressor gene

Identifiers

PMID22563191
PMCPMC3342602
OpenAlexW2074773146

What Socratic 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 Socratic graph.