Abstract
Green tea catechins have been extensively studied for their cancer preventive effects. Accumulating evidence has shown that green tea catechins, like (−)-epigallocatechin-3-gallate, have strong anti-oxidant activity and affect several signal transduction pathways relevant to cancer development. Here, we review the biological properties of green tea catechins and the molecular mechanisms of their anticancer effects, including the suppression of cancer cell proliferation, induction of apoptosis, and inhibition of tumor metastasis and angiogenesis. We summarize the efficacy of a single catechin and the synergetic effects of multiple catechins. We also discuss the enhanced anticancer effects of green tea catechins when they are combined with anticancer drugs. The information present in this review might promote the development of strategy for the co-administration of green tea catechins with other anticancer drugs to increase the potency of currently available anticancer medicine. This new strategy should in turn lower the cytotoxicity and cost of anticancer treatment.
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Abbreviations
- ACE:
-
Angiotensin-converting enzyme
- AP-1:
-
Activator protein-1
- Apaf-1:
-
Apoptosis protease activating factor-1
- ARE:
-
Antioxidant response elements
- Bad:
-
Bcl2 antagonist of cell death
- Bax:
-
Bcl-2 associated x protein
- Bcl-2:
-
B cell lymphoma-2
- Bid:
-
BH3-interacting domain death agonist
- CDKs:
-
Cyclin-dependent kinases
- CIs:
-
Confidence intervals
- CLL:
-
Chronic lymphocytic leukemia
- COX-2:
-
Cyclooxygenase-2
- CSCs:
-
Cancer stem cells
- Cyt-c:
-
Cytochrome-c
- EC:
-
(−)-Epicatechin
- ECG:
-
(−)-Epicatechin-3-gallate
- EGC:
-
(−)-Epigallocatechin
- EGCG:
-
(−)-Epigallocatechin-3-gallate
- ERK:
-
Extracellular-regulated protein kinase
- FADD:
-
Fas-associated protein with death domain
- FOXO:
-
Forkhead box protein O
- GCG:
-
(−)-Gallocatechin gallate
- GST:
-
Glutathione S-transferases
- HBP1:
-
HMG box-containing protein 1
- HGF/SF:
-
Hepatocyte growth factor/scatter factor
- Htert:
-
Human telomerase reverse transcriptase
- IAP:
-
Inhibitor of apoptosis proteins
- IGF:
-
Insulin-like growth factor
- IGFBP3:
-
Insulin-like growth factor binding protein 3
- IKK:
-
Inhibitor of nuclear factor kappa-B kinase
- IL-6:
-
Interleukin 6
- IL-8:
-
Interleukin 8
- iNOS:
-
Inducible nitric oxide synthase
- JNK:
-
c-jun N-terminal kinase
- MAPK:
-
Mitogen activated protein kinases
- mdm2:
-
Murine double mimute 2
- MEK3:
-
Mitogen-activated protein kinase 3
- MEKK1:
-
Mitogen-activated protein kinase kinase 1
- MMPs:
-
Matrix metallo proteinases
- MT1-MMP:
-
Membrane-type 1 matrix metalloproteinase
- NF-κB:
-
Nuclear factor-κB
- nHDFs:
-
Neonatal human dermal fibroblasts
- Nrf2:
-
Nuclear factor erythroid 2-related factor
- OR:
-
Odds ratio
- PCNA:
-
Proliferating cell nuclear antigen
- PI3K:
-
Phosphoinositide 3-kinases
- Poly E:
-
Polyphenon E
- PRAP:
-
Poly(ADP-ribose) polymerase
- ROS:
-
Reactive oxygen species
- RTK:
-
Receptor tyrosine kinases
- RR:
-
Relative risk
- SOD:
-
Superoxide dismutase
- Stat3:
-
Signal transducer and activator of transcription 3
- TCOP:
-
Tea catechin oxy-polymers
- TIMP:
-
Tissue inhibitor of metalloproteinase
- TNF-α:
-
Tumor necrosis factor α
- TRAIL:
-
TNF-related apoptosis-inducing ligand
- VEGF:
-
Vascular endothelial growth factor
- uPA:
-
Urokinase-type plasminogen activator
- XIAP:
-
X-linked inhibitor of apoptosis protein
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Acknowledgments
We are grateful to Zheng Shi and Huai-long Xu (Sichuan University) for providing constructive suggestions. We also thank Xin Li (Sichuan University) for critically reading the manuscript and Yong-ao Tong (Sichuan University) for technical assistance. This work was supported in part by the National Natural Science Foundation of China (No. 81173093, No. 30970643, and No. J1103518), the Special Program for Youth Science and the Technology Innovative Research Group of Sichuan Province, China (No. 2011JTD0026).
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Yang Yu and Yuan Deng have contributed equally to this work.
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Yu, Y., Deng, Y., Lu, Bm. et al. Green tea catechins: a fresh flavor to anticancer therapy. Apoptosis 19, 1–18 (2014). https://doi.org/10.1007/s10495-013-0908-5
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DOI: https://doi.org/10.1007/s10495-013-0908-5