Evidence map›Paper›PMID 23866759›Full record

ArticleProteome science2013

Proteomic analysis of the inhibitory effect of epigallocatechin gallate on lipid accumulation in human HepG2 cells.

Zhonghua Liu, Qin Li, Jianan Huang, Qionglin Liang, Yujun Yan, Haiyan Lin, Wenjun Xiao, Yong Lin, Sheng Zhang, Bin Tan and 1 more

Open access · goldAbstract read
In one paragraph

Article in Proteome science, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
1.3field-weighted citation impact, top 20% 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, 25 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. Article
  5. Review
  6. Review
  7. Review
  8. Article
  9. Review
  10. Food technology and biotechnology · 2023
    Article
  11. Article
  12. Review
  13. Review
  14. Article
  15. Article
  16. Salacia reticulata has therapeutic effects on obesity.Journal of natural medicines · 2014
    Article
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

11 authors at 2 institutions in 1 country.

Zhonghua Liu *Department of Chemistry, Tsinghua University and Key Laboratory of Biological Organic Phosphorus and Chemical Biology, Ministry of Education, Beijing 100084, China.
Qin Li *Hunan Provincial Key Laboratory of Crop Germplasm Innovation and Utilization and Key Laboratory of Tea Science, Ministry of Education, Hunan Agricultural University, Changsha, Hunan 410128, China.
Jianan HuangHunan Provincial Key Laboratory of Crop Germplasm Innovation and Utilization and Key Laboratory of Tea Science, Ministry of Education, Hunan Agricultural University, Changsha, Hunan 410128, China.
Qionglin LiangDepartment of Chemistry, Tsinghua University and Key Laboratory of Biological Organic Phosphorus and Chemical Biology, Ministry of Education, Beijing 100084, China.
Yujun YanNational Research Center of Engineering & Technology for Utilization of Botanical Functional Ingredients, Changsha, Hunan 410128, China.
Haiyan LinNational Research Center of Engineering & Technology for Utilization of Botanical Functional Ingredients, Changsha, Hunan 410128, China.
Wenjun XiaoNational Research Center of Engineering & Technology for Utilization of Botanical Functional Ingredients, Changsha, Hunan 410128, China.
Yong LinNational Research Center of Engineering & Technology for Utilization of Botanical Functional Ingredients, Changsha, Hunan 410128, China.
Sheng ZhangNational Research Center of Engineering & Technology for Utilization of Botanical Functional Ingredients, Changsha, Hunan 410128, China.
Bin TanNational Research Center of Engineering & Technology for Utilization of Botanical Functional Ingredients, Changsha, Hunan 410128, China.
Guoan LuoDepartment of Chemistry, Tsinghua University and Key Laboratory of Biological Organic Phosphorus and Chemical Biology, Ministry of Education, Beijing 100084, China.
Hunan Agricultural University · CNTsinghua University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background(-)-Epigallocatechin-3-gallate (EGCG), the most abundant catechin found in green tea, effectively reduces body weight and tissue and blood lipid accumulation. To explore the mechanism by which EGCG inhibits cellular lipid accumulation in free fatty acid (FFA) induced HepG2 cell culture, we investigated the proteome change of FFA-induced HepG2 cells exposed to EGCG using two-dimensional gel electrophoresis and mass spectrometry.

resultsIn this study, 36 protein spots showed a significant change in intensity by more than 1.5-fold from the control group to the FFA group and from the FFA group to the FFA + EGCG group. Among them, 24 spots were excised from gels and identified by LC-MS/MS. In total, 18 proteins were successfully identified. All identified proteins were involved in lipid metabolism, glycometabolism, antioxidant defense, respiration, cytoskeleton organization, signal transduction, DNA repair, mRNA processing, iron storage, or were chaperone proteins. This indicated that these physiological processes may play roles in the mechanism of inhibition of lipid accumulation by EGCG in FFA-induced HepG2 cells. Western blotting analysis was used to verify the expression levels of differentially expressed proteins, which agree with the proteomic results.

conclusionsFrom the proteomic analysis, we hypothesized that EGCG reduced cellular lipid accumulation in FFA-induced HepG2 cells through the activation of AMP-activated protein kinase (AMPK) resulting from the generation of reactive oxygen species (ROS). The induction of ROS may be a result of EGCG regulation of the antioxidant defense system. Activation of AMPK shifted some FFA toward oxidation, away from lipid and triglyceride storage, and suppressed hepatic gluconeogenesis. The findings of this study improve our understanding of the molecular mechanisms of inhibition of lipid accumulation by EGCG in HepG2 cells.

Identifiers

PMID23866759
PMCPMC3723827
OpenAlexW2128805286

What OpenQuestion 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 OpenQuestion graph.