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Related Concept Videos

Electron Transport Chain: Complex I and II01:46

Electron Transport Chain: Complex I and II

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The mitochondrial electron transport chain (ETC) is the main energy generation system in the eukaryotic cells. However, mitochondria also produce cytotoxic reactive oxygen species (ROS) due to the large electron flow during oxidative phosphorylation. While Complex I is one of the primary sources of superoxide radicals, ROS production by Complex II is uncommon and may only be observed in cancer cells with mutated complexes.
ROS generation is regulated and maintained at moderate levels necessary...
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Related Experiment Video

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Intracellular Phosphoflow Cytometry of Acute Myeloid Leukemia Patient-Derived Xenotransplants
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ITPR2 Promotes Acute Myeloid Leukemia Progression Through Calcium-Mediated Mitochondrial Dysfunction.

Xiaoke Huang1,2, Na Lu1, Shanhu Zhu1

  • 1Department of Hematology, The First Affiliated Hospital of Guangxi Medical University, 530021 Nanning, Guangxi, China.

Frontiers in Bioscience (Landmark Edition)
|February 28, 2026
PubMed
Summary
This summary is machine-generated.

Inositol 1,4,5-trisphosphate receptor type 2 (ITPR2) is highly expressed in acute myeloid leukemia (AML), driving disease progression. Targeting ITPR2 may offer a new therapeutic strategy for AML patients.

Keywords:
acute myeloid leukemiacalciummitochondrialprognosis

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Area of Science:

  • Hematology
  • Molecular Biology
  • Cancer Research

Background:

  • Acute myeloid leukemia (AML) is a challenging hematological malignancy with limited targeted therapies.
  • Inositol 1,4,5-trisphosphate receptor type 2 (ITPR2) plays a critical role in cellular processes.
  • This study investigates the role of ITPR2 in AML pathogenesis and its clinical significance.

Purpose of the Study:

  • To elucidate the function of ITPR2 in regulating apoptosis in AML.
  • To investigate the mechanism by which ITPR2 modulates mitochondrial calcium levels.
  • To assess the clinical significance and prognostic value of ITPR2 in AML.

Main Methods:

  • Quantitative real-time PCR (RT-qPCR) to measure ITPR2 expression in AML patients and controls.
  • Bioinformatics analyses to explore ITPR2's role in AML and its association with immune infiltration.
  • ITPR2 knockdown using siRNA and inhibition with 2-APB in THP-1 cells, followed by molecular characterization (RT-qPCR, WB, CCK-8, flow cytometry).

Main Results:

  • ITPR2 expression is significantly elevated in AML patients and correlates with poor prognosis and risk stratification.
  • ITPR2 is implicated in calcium signaling and mitochondrial function, with its expression negatively correlating with immune infiltration.
  • ITPR2 knockdown or inhibition reduces cellular and mitochondrial calcium, induces mitochondrial dysfunction (increased ROS, decreased MMP, reduced mtDNA copy number), and promotes AML cell apoptosis.

Conclusions:

  • ITPR2 promotes AML progression through the calcium-mitochondrial axis.
  • ITPR2 serves as a potential prognostic biomarker for AML.
  • ITPR2 represents a promising therapeutic target for acute myeloid leukemia.