Related Experiment Video
Updated: Feb 13, 2026

Detection of Mitochondria Membrane Potential to Study CLIC4 Knockdown-induced HN4 Cell Apoptosis In Vitro
Published on: July 17, 2018
Medicinal mushroom Phellinus igniarius induced cell apoptosis in gastric cancer SGC-7901 through a
Fei-Fei Wang1, Chao Shi1, Yue Yang1
1School of Pharmacy, Anhui Medical University, 81 Meishan Road, Hefei 230032, PR China.
Abstract:
Gastric cancer (GC) is the fourth most common diagnosed cancer and the second leading cause of cancer death worldwide. Phellinus igniarius is a traditional medicinal mushroom used in China and other countries of East Asia for the treatment of various diseases including cancer. The aim of this study is to evaluate the antitumor activity of P. igniarius and elucidate the possible mechanism. MTT assay displayed that the total ethanol extract of P. igniarius (TPI) had antitumor activities against five human tumor cell lines of HepG-2, AGS, SGC-7901, Hela and A-549. TPI was found the most cytotoxity against gastric cancer SGC-7901 in vitro, and strongly inhibited the tumor growth in xenograft nude mice in vivo. Typical morphological changes due to cell apoptosis including chromatin condensation, and nuclear fragmentation with the formation of apoptotic bodies were observed in the SGC-7901 cells after TPI treatment. TPI blocked SGC-7901 cell cycle at G0/G1 phase and caused apoptosis by down-regulated the expression of cyclin D1. TPI caused a remarkable collapse of mitochondrial membrane potential (MMP, △ψm) in SGC-7901 cells and induced the mitochondrial-dependent apoptosis by triggered the caspase-9, -3 activation and PARP cleavage. Moreover, TPI increased the ratio of Bax/Bcl-2 in SGC-7901 both in vitro and in vivo. These findings suggested that P. igniarius could be a potential natural derived therapeutic agent for the prevention and treatment of gastric cancer, as it could induce the cancer cell apoptosis through a mitochondria-dependent pathway.
Insights
Phellinus igniarius extract shows potent antitumor effects against gastric cancer cells. It induces apoptosis through a mitochondria-dependent pathway, offering potential as a natural therapeutic agent.
Area of Science:
- Oncology
- Pharmacology
- Natural Products Research
Background:
- Gastric cancer (GC) is a leading cause of cancer death globally.
- Phellinus igniarius is a traditional East Asian medicinal mushroom with reported anti-cancer properties.
Purpose of the Study:
- To evaluate the anti-tumor activity of Phellinus igniarius extract.
- To elucidate the underlying mechanisms of its anti-cancer effects.
Main Methods:
- MTT assay for in vitro cytotoxicity.
- Xenograft nude mouse model for in vivo tumor growth inhibition.
- Flow cytometry and Western blotting to analyze apoptosis and cell cycle.
Main Results:
- Total ethanol extract of Phellinus igniarius (TPI) exhibited cytotoxicity against multiple cancer cell lines, notably gastric cancer SGC-7901.
- TPI significantly inhibited tumor growth in vivo and induced apoptosis in SGC-7901 cells.
- TPI triggered mitochondrial-dependent apoptosis by down-regulating cyclin D1, collapsing mitochondrial membrane potential, activating caspases, and altering Bax/Bcl-2 ratio.
Conclusions:
- Phellinus igniarius extract demonstrates significant anti-tumor activity against gastric cancer.
- The extract induces apoptosis via a mitochondria-dependent pathway, suggesting its potential as a natural therapeutic agent for gastric cancer prevention and treatment.
Related Concept Videos
NF-κB-dependent Signaling Pathway
NF-κB-dependent Signaling Mechanism
The...
cAMP-dependent Protein Kinase Pathways
Peroxisomes and Mitochondria
The peroxisome is a single membrane-bound cellular organelle that can perform several different functions, including lipid metabolism and chemical detoxification. The enzymes within...
Apoptosis
Mitochondria
Gastric Motility
Peristaltic Waves and Chyme Formation
Upon food entry, the stomach initiates...

