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Related Experiment Videos

[Study on NB4 cell apoptosis induced by trichosanthin].

Wen-Da Luo1, Chang-Ming Ren, Min Zhu

  • 1Department of Hematology, Taizhou Hospital of Zhejiang Province, Linhai 317000, China.

Zhongguo Shi Yan Xue Ye Xue Za Zhi
|April 28, 2005
PubMed
Summary

Trichosanthin (TCS) effectively inhibits human NB4 cell growth and induces apoptosis in vitro. This study provides evidence for TCS

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Area of Science:

  • Biochemistry
  • Cell Biology
  • Pharmacology

Context:

  • Acute promyelocytic leukemia (APL) is a hematologic malignancy.
  • Developing novel therapeutic agents for APL is crucial.
  • Trichosanthin (TCS), a protein from Trichosanthes kirilowii, has shown cytotoxic properties.

Purpose:

  • To investigate the effects of TCS on the apoptosis and growth inhibition of human NB4 cells in vitro.
  • To analyze the expression of annexin V and mitochondrial membrane potential (DeltaPsim) in TCS-treated NB4 cells.
  • To confirm apoptosis induction by TCS using DNA agarose gel electrophoresis.

Summary:

  • MTT assays demonstrated that higher concentrations and longer exposure times of TCS resulted in stronger growth inhibition of NB4 cells.
  • Flow cytometry analysis revealed increased annexin V expression and decreased DeltaPsim, indicating apoptosis.

Related Experiment Videos

  • DNA agarose gel electrophoresis confirmed dose-dependent DNA fragmentation, characteristic of apoptosis.

    • Impact:

    • Data indicate that TCS inhibits NB4 cell proliferation and induces apoptosis in vitro.
    • This research provides evidence supporting the potential clinical application of TCS in treating acute promyelocytic leukemia.