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[Effects of bcl-2 antisense oligodeoxynucleotide on proliferation and apoptosis of Raji cells]
Fu-xu Wang1, Zuo-ren Dong, Ze-lin Liu
1Department of Hematology, The Second Affiliated Hospital of Hebei Medical University, Shijiazhuang 050000, China.
Objective:
To study the in vitro antitumor activity of bcl-2 fully phosporothioated antisense oligodeoxynucleotide (bcl-2 ASODN) to malignant lymphoblastic cells.
Methods:
Proliferation and apoptosis of Raji cells incubated with bcl-2 ASODN were evaluated by MTT assay, flow cytometry (FCM) and electron microscopy, and the level of bcl-2 protein and mRNA expression were assessed by FCM and RT-PCR, respectively.
Results:
MTT assay demonstrated that bcl-2 ASODN could partially inhibit the growth of Raji cells. After incubated with ASODN for 48 hours, Raji cells exhibited characteristic morphologic changes of apoptosis, including cytoplasm membrane blebbing, chromatin condensation crescents formation and nuclear fragmentation. The apoptosis rate of Raji cells treated with 20 micromol/L bcl-2 ASON for 72 hrs was 43.86% which is significantly higher than that of control (10.05%). The bcl-2 ASODN induced apoptosis of Raji cells was accompanied by declined expression of bcl-2 mRNA, which decreased to 0.88% at 72 hrs and was significantly lower than that of control (79.54%).
Conclusion:
bcl-2 ASODN induced Raji cells apoptosis by downregulating bcl-2 protein.
Insights
Antisense oligodeoxynucleotides targeting bcl-2 (bcl-2 ASODN) show antitumor effects by inducing apoptosis in malignant lymphoblastic cells. This therapy downregulates bcl-2 protein expression, offering a potential treatment strategy.
Area of Science:
- Molecular Biology
- Cancer Research
- Oligonucleotide Therapeutics
Context:
- Malignant lymphoblastic cells are a significant challenge in oncology.
- The bcl-2 protein plays a crucial role in inhibiting apoptosis.
- Targeting bcl-2 offers a potential therapeutic strategy for cancer.
Purpose:
- To investigate the in vitro antitumor activity of bcl-2 antisense oligodeoxynucleotide (bcl-2 ASODN).
- To evaluate the effect of bcl-2 ASODN on proliferation and apoptosis of malignant lymphoblastic cells.
- To assess the impact of bcl-2 ASODN on bcl-2 protein and mRNA expression.
Summary:
- bcl-2 ASODN partially inhibited the growth of Raji cells.
- Treatment with bcl-2 ASODN induced characteristic morphologic changes of apoptosis.
- The apoptosis rate significantly increased in treated cells, accompanied by decreased bcl-2 mRNA expression.
Impact:
- bcl-2 ASODN demonstrates in vitro antitumor activity against malignant lymphoblastic cells.
- The mechanism involves the induction of apoptosis.
- Downregulation of bcl-2 protein expression is key to this therapeutic effect.
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