Related Experiment Video
Updated: Aug 10, 2026
08:31
Characterization of Human Monocyte-derived Dendritic Cells by Imaging Flow Cytometry: A Comparison between Two Monocyte Isolation Protocols
Published on: October 18, 2016
Differential effects of monastrol in two human cell lines
I Leizerman1, R Avunie-Masala, M Elkabets
1Department of Clinical Biochemistry, Ben-Gurion University of the Negev, P. O. Box 653, 84105, Beer-Sheva, Israel.
Cellular and Molecular Life Sciences : CMLS
|August 19, 2004
Summary
Monastrol, an inhibitor of the mitotic kinesin HsEg5, affects human cancer cell lines differently. AGS cells show higher sensitivity to monastrol than HT29 cells, impacting proliferation and apoptosis pathways.
Area of Science:
- Cell Biology
- Molecular Biology
- Cancer Research
Background:
- The kinesin-related protein HsEg5 is crucial for mitotic spindle organization.
- Inhibiting HsEg5 is a potential cancer therapy strategy, but its effects on human cells require detailed characterization.
Purpose of the Study:
- To investigate and compare the effects of the HsEg5 inhibitor monastrol on AGS and HT29 human cancer cell lines.
- To elucidate the differential cellular responses, including proliferation, cell cycle arrest, and apoptosis, induced by monastrol.
Main Methods:
- Treatment of AGS and HT29 cell lines with monastrol and taxol.
- Assessment of cell proliferation, G2/M phase arrest, apoptosis induction, and mitochondrial membrane potential.
- Analysis of caspase cleavage and microtubule aster formation.
Main Results:
- AGS cells exhibited greater sensitivity to monastrol compared to HT29 cells.
- Monastrol induced apoptosis in both cell lines, evidenced by mitochondrial depolarization and PARP-1 cleavage.
- Differential apoptosis pathways were observed, with prominent caspase-8 and caspase-3 cleavage in AGS cells but not HT29 cells.
- Monastrol induced distinct microtubule aster formations (symmetric in AGS, asymmetric in HT29).
Conclusions:
- HsEg5 inhibition by monastrol leads to differential sensitivity and distinct cellular responses in human cancer cell lines.
- The observed differences in apoptosis pathways and microtubule organization may be linked to specific HsEg5 functions within different cell types.
