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Overview of Cell Death01:30

Overview of Cell Death

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Cell death is an essential process where the body gets rid of old or damaged cells. Cell proliferation and death need to be balanced, as an imbalance between the two may lead to cancer or autoimmune diseases.
Cell death was observed in the early 19th century, but there was no experimental evidence to prove it. In 1842, Carl Vogt first discovered cell death in a metamorphic toad; however, it was not termed ‘cell death.’ Scientists discovered different cell death pathways only in the...
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Internal cellular stress, such as cellular injury or hypoxia, triggers intrinsic apoptosis. The B-cell lymphoma 2 (Bcl-2) family of proteins are the primary regulators of the intrinsic apoptotic pathway. For example, during DNA damage, checkpoint proteins, such as Ataxia Telangiectasia Mutated (ATM protein) and Checkpoints Factor-2 (Chk2) proteins, are activated. These proteins phosphorylate p53 which further activates pro-apoptotic proteins, such as Bax, Bak, PUMA, and Noxa, and inhibits...
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Adaptive Mechanisms in Cancer Cells02:53

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Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
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Apoptosis01:30

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Apoptosis is a combination of two Greek words, 'apo' and 'ptosis,' meaning separation and falling off, respectively. Hippocrates used this word to describe gangrene, which was caused due to bandaging of fractured bones. Apoptosis was distinguished from necrosis in 1970 when John Kerr reported observations of morphological changes occurring during apoptosis. During one experiment, he observed that the disruption of blood supply to the liver tissue resulted in a size...
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Updated: Apr 19, 2026

Cell Death Associated with Abnormal Mitosis Observed by Confocal Imaging in Live Cancer Cells
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Cell Death Associated with Abnormal Mitosis Observed by Confocal Imaging in Live Cancer Cells

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Cell death in cancer.

Marcus Conrad1, Andreas Strasser2, Philipp J Jost3

  • 1Institute of Metabolism and Cell Death, Helmholtz Zentrum München, Neuherberg, Germany; Translational Redox Biology, Natural School of Sciences, Technical University of Munich, Garching, Germany.

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This summary is machine-generated.

Cancer cells evade death, but understanding cell death programs like apoptosis and ferroptosis offers new therapeutic strategies. Restoring cancer cell death is key to overcoming treatment resistance and improving outcomes.

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Area of Science:

  • Oncology
  • Cell Biology
  • Immunology

Background:

  • Cancer cells evade apoptosis, a key cell death pathway, to survive oncogenic and therapeutic stress.
  • The field of cell death has expanded beyond apoptosis to include necroptosis, pyroptosis, and ferroptosis, impacting cancer biology.
  • Non-apoptotic cell death pathways influence inflammation and the tumor microenvironment, affecting immunotherapy response.

Purpose of the Study:

  • To provide a unified framework for understanding major cell death programs in cancer.
  • To explore the roles of these programs in cancer development, progression, and treatment.
  • To address mechanisms of resistance to cancer cell death and immune suppression.

Main Methods:

  • This is a review article, synthesizing existing research on cell death pathways in cancer.
  • The review integrates findings on apoptosis, necroptosis, pyroptosis, and ferroptosis.
  • It analyzes the metabolic underpinnings of ferroptosis, including lipid, iron, and redox regulation.

Main Results:

  • Apoptosis is the primary cell death pathway induced by radiation and chemotherapy.
  • Non-apoptotic pathways, particularly ferroptosis, play crucial roles in inflammation and immune interactions.
  • Ferroptosis is characterized by iron-dependent lipid peroxidation and is linked to metabolic perturbations.

Conclusions:

  • A comprehensive understanding of diverse cell death programs is essential for developing novel cancer therapies.
  • Targeting cell death pathways, including ferroptosis, presents therapeutic opportunities.
  • Overcoming resistance to cell death and modulating immune responses are critical for effective cancer treatment.