Evidence map›Paper›PMID 26100134›Full record

ArticleBMC complementary and alternative medicine2015

The green tea catechin epigallocatechin gallate induces cell cycle arrest and shows potential synergism with cisplatin in biliary tract cancer cells.

Christian Mayr, Andrej Wagner, Daniel Neureiter, Martin Pichler, Martin Jakab, Romana Illig, Frieder Berr, Tobias Kiesslich

Open access · goldAbstract read
In one paragraph

Article in BMC complementary and alternative medicine, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed, 1 pooled it
6.2field-weighted citation impact, top 3% 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

32 citing papers in PubMed, 1 synthesis or guideline pooled it, 72 citations in OpenAlex.

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  11. Anticarcinogenic potentials of tea catechins.Frontiers in nutrition · 2022
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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 3 institutions in 2 countries.

Christian MayrDepartment of Internal Medicine I, Salzburger Landeskliniken - SALK, Paracelsus Medical University, Salzburg, Austria. ch.mayr@salk.at.
Andrej WagnerDepartment of Internal Medicine I, Salzburger Landeskliniken - SALK, Paracelsus Medical University, Salzburg, Austria. and.wagner@salk.at.
Daniel NeureiterInstitute of Pathology, Salzburger Landeskliniken - SALK, Paracelsus Medical University, Salzburg, Austria. d.neureiter@salk.at.
Martin PichlerDepartment of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA. mpichler@mdanderson.org.
Martin JakabLaboratory for Functional and Molecular Membrane Physiology, Institute of Physiology and Pathophysiology, Paracelsus Medical University, Salzburg, Austria. martin.jakab@pmu.ac.at.
Romana IlligInstitute of Pathology, Salzburger Landeskliniken - SALK, Paracelsus Medical University, Salzburg, Austria. r.illig@salk.at.
Frieder BerrLaboratory for Tumour Biology and Experimental Therapies, Institute of Physiology and Pathophysiology, Paracelsus Medical University, Salzburg, Austria. frieder.berr@pmu.ac.at.
Tobias KiesslichDepartment of Internal Medicine I, Salzburger Landeskliniken - SALK, Paracelsus Medical University, Salzburg, Austria. t.kiesslich@salk.at.
Paracelsus Medical University · ATSalzburger Landeskliniken · ATThe University of Texas MD Anderson Cancer Center · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe green tea catechin epigallocatechin gallate (EGCG) was shown to effectively inhibit tumor growth in various types of cancer including biliary tract cancer (BTC). For most BTC patients only palliative therapy is possible, leading to a median survival of about one year. Chemoresistance is a major problem that contributes to the high mortality rates of BTC. The aim of this study was to investigate the cytotoxic effect of EGCG alone or in combination with cisplatin on eight BTC cell lines and to investigate the cellular anti-cancer mechanisms of EGCG.

methodsThe effect of EGCG treatment alone or in combination with the standard chemotherapeutic cisplatin on cell viability was analyzed in eight BTC cell lines. Additionally, we analyzed the effects of EGCG on caspase activity, cell cycle distribution and gene expression in the BTC cell line TFK-1.

resultsEGCG significantly reduced cell viability in all eight BTC cell lines (p < 0.05 or p < 0.01, respectively, for most cell lines and EGCG concentrations > 5 μM). Combined EGCG and cisplatin treatment showed a synergistic cytotoxic effect in five cell lines and an antagonistic effect in two cell lines. Furthermore, EGCG reduced the mRNA levels of various cell cycle-related genes, while increasing the expression of the cell cycle inhibitor p21 and the apoptosis-related death receptor 5 (p < 0.05). This observation was accompanied by an increase in caspase activity and cells in the sub-G1 phase of the cell cycle, indicating induction of apoptosis. EGCG also induced a down-regulation of expression of stem cell-related genes and genes that are associated with an aggressive clinical character of the tumor, such as cd133 and abcg2.

conclusionsEGCG shows various anti-cancer effects in BTC cell lines and might therefore be a potential anticancer drug for future studies in BTC. Additionally, EGCG displays a synergistic cytotoxic effect with cisplatin in most tested BTC cell lines. Graphical abstract Summary illustration.

Indexed as

Biliary Tract NeoplasmsAntineoplastic AgentsApoptosisCatechinCell Cycle CheckpointsCell Line, TumorCell SurvivalCisplatinDrug SynergismHumansAntineoplastic AgentsCatechinCisplatinepigallocatechin gallate

Identifiers

PMID26100134
PMCPMC4477611
OpenAlexW2146885219

What OpenQuestion holds

Textmetadata
LicenceCC BY
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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.