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Updated: Sep 9, 2025
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Pre-clinical Evaluation of Tyrosine Kinase Inhibitors for Treatment of Acute Leukemia
Published on: September 18, 2013
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Protopine Exerts Anti-Leukemic Effects by Promoting ROS-mediated Inhibition of Survival Signals in Acute Myeloid
Ji-Eun Lee1, Byeol-Eun Jeon1, Chan-Seong Kwon1
1Department of Integrated Biological science, Pusan National University, Busan, Republic of Korea.
Anticancer Research
|August 28, 2025
Summary
Protopine effectively induces differentiation in acute myeloid leukemia (AML) cells by increasing reactive oxygen species and inhibiting key survival pathways. This natural compound shows promise for novel AML differentiation therapy.
Area of Science:
- Hematology
- Cancer Biology
- Pharmacology
Background:
- Acute myeloid leukemia (AML) is characterized by impaired myeloid progenitor cell differentiation.
- Current AML chemotherapy (7+3 protocol) has limited efficacy, with stagnant survival rates.
- Differentiation therapy offers a targeted approach to mature leukemic cells.
Purpose of the Study:
- To investigate the anti-leukemic effects of protopine.
- To explore the mechanisms underlying protopine's action in AML cells.
Main Methods:
- Flow cytometry, MTS assay, proliferation, and trypan blue exclusion assays.
- Mitochondrial reactive oxygen species (ROS) assessment using MitoSOX Red.
- Western blotting for apoptosis/survival proteins and JC-1 dye for mitochondrial membrane potential.
Main Results:
- Protopine induced AML cell differentiation, inhibiting proliferation and viability.
- Increased ROS and p16/p21 expression mediated protopine-induced differentiation.
- Protopine suppressed AKT/ERK pathways, downregulated Bcl-2, disrupted mitochondrial potential, and induced apoptosis.
Conclusions:
- Protopine demonstrates significant differentiation-inducing activity in AML.
- Protopine's mechanism involves ROS generation, cell cycle inhibition, and apoptosis induction.
- Protopine is a potential candidate for AML differentiation therapy.
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