Related Experiment Video
Updated: Mar 31, 2026
Analysis of Combinatorial miRNA Treatments to Regulate Cell Cycle and Angiogenesis
Published on: March 30, 2019
MiR-29 Induces K562 Cell Apoptosis by Down-Regulating FoxM1
Xiaofang Wang1, Hua Zhong1, Lei Wang1
1Department of Clinical Laboratory Medicine, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, China (mainland).
Background:
Leukemia seriously threatens human life and health. MicroRNAs can regulate cell growth, proliferation, and death. This article investigated the role of miR-29 on regulating leukemia cell growth, proliferation, and apoptosis.
Material And Methods:
miR-29 and scramble miRNA were transfected to K562 cells. MTT assay, colony formation assay, caspase-3 activity detection, and flow cytometry were applied to test miR-29 effect on cell growth, proliferation, and apoptosis. Western blot was used to detect Forkhead box protein M1 (FoxM1) protein expression. After we transfected miR-29, K562 cells were transfected with FoxM1 siRNA to test cell apoptosis.
Results:
K562 cell growth and proliferation were inhibited after transfection with miR-29. Apoptosis phenome and caspase-3 activation were observed. FoxM1 level decreased. SiRNA FoxM1 enhanced miR-29-induced K562 cell apoptosis. FoxM1 overexpression suppressed miR-26-induced K562 cell apoptosis.
Conclusions:
MiR-29 restrained K562 cell growth and proliferation. MiR-29 induced K562 cell apoptosis through down-regulating FoxM1.
Insights
MicroRNA-29 (miR-29) inhibits leukemia cell growth and proliferation. It induces apoptosis by down-regulating Forkhead box protein M1 (FoxM1) in K562 cells.
Area of Science:
- Molecular Biology
- Cancer Research
- Cell Biology
Background:
- Leukemia poses a significant threat to human health.
- MicroRNAs play crucial roles in regulating cell growth, proliferation, and apoptosis.
- Understanding specific microRNA functions is vital for leukemia research.
Purpose of the Study:
- To investigate the role of miR-29 in regulating leukemia cell growth, proliferation, and apoptosis.
- To elucidate the molecular mechanism underlying miR-29's effects on leukemia cells.
- To assess the potential of miR-29 as a therapeutic target in leukemia.
Main Methods:
- Transfection of K562 cells with miR-29 and scramble miRNA.
- Assessment of cell growth and proliferation using MTT and colony formation assays.
- Detection of apoptosis via caspase-3 activity and flow cytometry.
- Western blot analysis to determine Forkhead box protein M1 (FoxM1) expression levels.
- Validation of miR-29's mechanism using siRNA targeting FoxM1 and FoxM1 overexpression.
Main Results:
- miR-29 transfection significantly inhibited K562 cell growth and proliferation.
- Increased apoptosis and caspase-3 activation were observed in miR-29 transfected cells.
- Down-regulation of FoxM1 protein expression was detected following miR-29 transfection.
- siRNA-mediated knockdown of FoxM1 enhanced miR-29-induced apoptosis.
- Overexpression of FoxM1 suppressed miR-29-induced apoptosis.
Conclusions:
- miR-29 effectively restrains K562 leukemia cell growth and proliferation.
- miR-29 induces apoptosis in K562 cells primarily through the down-regulation of FoxM1.
- These findings highlight miR-29 as a potential therapeutic agent targeting FoxM1 in leukemia treatment.
Related Concept Videos
01:15Receptor Downregulation in MVBs
The EGFR can initiate signaling pathways that lead to cell proliferation, migration, and differentiation. Overexpression of EGFR stimulates cells to proliferate. Excessive EGFR...
01:17The Extrinsic Apoptotic Pathway
02:23Abnormal Proliferation