Related Experiment Video
Updated: Jun 5, 2026
15:53
Cell Death Associated with Abnormal Mitosis Observed by Confocal Imaging in Live Cancer Cells
Published on: August 21, 2013
Phloroglucinol derivative MCPP induces cell apoptosis in human colon cancer
Ssu-Ming Huang1, Chi-Wai Cheung, Chih-Shiang Chang
1Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan.
Journal of Cellular Biochemistry
|January 27, 2011
Summary
The novel phloroglucinol derivative, MCPP, demonstrates anticancer effects by inducing apoptosis in human colon cancer cells. This occurs through endoplasmic reticulum stress and GSK3α/β activation, offering a potential new therapeutic strategy.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Colon cancer remains a significant global health challenge, necessitating novel therapeutic agents.
- Phloroglucinol derivatives are being explored for their potential biological activities.
- Understanding the molecular mechanisms of novel compounds is crucial for drug development.
Purpose of the Study:
- To investigate the anticancer effects of a new phloroglucinol derivative, 3,6-bis(3-chlorophenylacetyl)phloroglucinol (MCPP), on human colon cancer cells.
- To elucidate the molecular pathways involved in MCPP-induced colon cancer cell death.
- To assess the specificity of MCPP's effects on cancer cells versus normal cells.
Main Methods:
- Cell viability and proliferation assays on HCT-116, SW480, and Caco-2 colon cancer cells, and primary human dermal fibroblast cells.
- Fluorescence-activated cell sorter (FACS) analysis to quantify apoptotic cell death.
- Western blotting and siRNA to analyze endoplasmic reticulum (ER) stress markers (GRP78, CHOP, eIF-2α) and GSK3α/β phosphorylation.
- Caspase activity assays and inhibition studies.
Main Results:
- MCPP induced concentration-dependent apoptosis and antiproliferation in human colon cancer cells, but not in normal fibroblasts.
- MCPP treatment upregulated ER stress markers (GRP78, CHOP) and induced eIF-2α phosphorylation in HCT-116 cells.
- MCPP modulated GSK3α/β phosphorylation, and its inhibition reduced MCPP-induced apoptosis and ER stress.
- MCPP increased caspase-7, -9, and -3 activity, which was reversed by caspase inhibitors.
Conclusions:
- MCPP exhibits potent anticancer activity against human colon cancer cells.
- The anticancer effects of MCPP are mediated through the induction of ER stress and activation of GSK3α/β signaling pathway.
- MCPP-induced apoptosis involves the activation of caspases.
- MCPP represents a promising candidate for further investigation as a colon cancer therapeutic agent.
Related Concept Videos
01:31The Intrinsic Apoptotic Pathway
Internal cellular stress, such as cellular injury or hypoxia, triggers intrinsic apoptosis. The B-cell lymphoma 2 (Bcl-2) family of proteins are the primary regulators of the intrinsic apoptotic pathway. For example, during DNA damage, checkpoint proteins, such as Ataxia Telangiectasia Mutated (ATM protein) and Checkpoints Factor-2 (Chk2) proteins, are activated. These proteins phosphorylate p53 which further activates pro-apoptotic proteins, such as Bax, Bak, PUMA, and Noxa, and inhibits...
02:23Abnormal Proliferation
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the daughter...