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The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
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Related Experiment Video

Updated: Jul 7, 2025

Assessing Cellular Target Engagement by SHP2 PTPN11 Phosphatase Inhibitors
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Prohibitin 2: A key regulator of cell function.

Bingjie Zhang1, Wentao Li2, Jiaying Cao2

  • 1Gastroenterology and Urology Department II, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan 410013, China; Cancer Research Institute, Basic School of Medicine, Central South University, Changsha, Hunan 410011, China.

Life Sciences
|December 24, 2023
PubMed
Summary
This summary is machine-generated.

Prohibitin 2 (PHB2) is vital for cell functions including mitosis and apoptosis. This review details PHB2's diverse roles in cellular processes and its potential for disease treatment.

Keywords:
Cell physiologyDrug targetingMitophagyPHB2Signal transduction

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Area of Science:

  • Molecular Biology
  • Cell Biology
  • Genetics

Background:

  • The PHB2 gene encodes prohibitin 2, a 37 kDa protein crucial for mitochondrial function.
  • PHB2 acts as a molecular chaperone, influencing cell division, autophagy, and apoptosis.
  • Its unique structure includes a negatively charged region vital for its chaperone activity.

Purpose of the Study:

  • To comprehensively review the multifaceted roles of PHB2 in regulating cellular functions.
  • To elucidate the mechanisms by which PHB2 influences mitosis, autophagy, signal transduction, and cell death.
  • To explore the therapeutic potential of PHB2 in disease treatment.

Main Methods:

  • Literature review of studies on PHB2 gene and protein.
  • Analysis of PHB2's involvement in various cellular pathways (e.g., transcription factor inhibition, mitochondrial regulation).
  • Discussion of PHB2's impact on cell growth, proliferation, metastasis, and apoptosis.

Main Results:

  • PHB2 regulates cell functions by inhibiting transcription factors and nuclear receptors.
  • It is essential for cytoplasmic and membrane-bound functions, ensuring normal mitosis and cell differentiation.
  • PHB2 impacts mitochondrial integrity, autophagy, apoptosis, and stress responses, including cytochrome c migration.
  • PHB2 also influences cell growth and metastasis via mitochondrial-independent pathways.

Conclusions:

  • PHB2 is a key regulator of fundamental cellular processes, including cell cycle, mitochondrial homeostasis, and apoptosis.
  • Understanding PHB2's complex mechanisms provides a basis for exploring its therapeutic applications.
  • Further research into PHB2's roles can offer innovative perspectives for disease intervention.