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Related Concept Videos

Overview of Cell Death01:30

Overview of Cell Death

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 20th century...
The Extrinsic Apoptotic Pathway01:17

The Extrinsic Apoptotic Pathway

The extrinsic apoptotic pathway is initiated when extracellular death-inducing signals, such as specific cytokines, activate the death receptors expressed on the cell surface. The immune cells involved in this pathway are natural killer cells (NK cells) and cytotoxic T-lymphocytes. NK cells are critical in innate immune response, while cytotoxic T-lymphocytes are associated with adaptive immune response. These cells recognize specific receptors expressed on the altered cells and activate...
Cellular Injury IlI: Cellular Death01:11

Cellular Injury IlI: Cellular Death

Cell death is the irreversible loss of cellular structure and function, representing the final stage of severe injury. It plays a key role in both normal physiology and disease.Types of Cell DeathThe two main types are necrosis and apoptosis, though others like necroptosis and pyroptosis also exist.Necrosis:Necrosis is an unregulated form of cell death caused by severe injury such as trauma, toxins, or ischemia. It is characterized by cell swelling, membrane loss, rupture, and leakage of...
The Intrinsic Apoptotic Pathway01:31

The Intrinsic Apoptotic Pathway

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...
Apoptosis01:30

Apoptosis

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 reduction of the tissue.
Autophagic Cell Death01:18

Autophagic Cell Death

Christian de Duve discovered “autophagy,” a process in which cellular components are engulfed by membrane-bound organelles called autophagosomes. The autophagosomes then fuse with lysosomes to digest the enclosed contents. Autophagy is generally activated in cells to prevent cell death. However, cell death is triggered when the damage is beyond repair.
Autophagy and Apoptosis
Autophagy can activate apoptosis. In normal conditions, the autophagy activating protein Beclin-1 and pro-apoptotic...

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Related Experiment Video

Updated: May 17, 2026

Quantification of Cytokine-Induced Cell Death in Human Colonic Organoids Using Live Fluorescence Microscopy
10:03

Quantification of Cytokine-Induced Cell Death in Human Colonic Organoids Using Live Fluorescence Microscopy

Published on: August 2, 2024

Honokiol, a multifunctional tumor cell death inducer.

Wei Tian1, Dong Xu, Yong-Chuan Deng

  • 1Cancer Institute, The Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education, China.

Die Pharmazie
|November 10, 2012
PubMed
Summary

Honokiol, a natural compound, shows promise in cancer treatment by inducing cell death and overcoming drug resistance. This review highlights its anti-tumor effects and potential therapeutic applications.

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Identification of Intracellular Signaling Events Induced in Viable Cells by Interaction with Neighboring Cells Undergoing Apoptotic Cell Death
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Identification of Intracellular Signaling Events Induced in Viable Cells by Interaction with Neighboring Cells Undergoing Apoptotic Cell Death

Published on: December 27, 2016

Related Experiment Videos

Last Updated: May 17, 2026

Quantification of Cytokine-Induced Cell Death in Human Colonic Organoids Using Live Fluorescence Microscopy
10:03

Quantification of Cytokine-Induced Cell Death in Human Colonic Organoids Using Live Fluorescence Microscopy

Published on: August 2, 2024

Identification of Intracellular Signaling Events Induced in Viable Cells by Interaction with Neighboring Cells Undergoing Apoptotic Cell Death
09:18

Identification of Intracellular Signaling Events Induced in Viable Cells by Interaction with Neighboring Cells Undergoing Apoptotic Cell Death

Published on: December 27, 2016

Area of Science:

  • Pharmacology
  • Oncology
  • Natural Products Chemistry

Background:

  • Honokiol is a bioactive compound derived from Magnolia species.
  • It exhibits diverse pharmacological activities with potential medicinal applications.
  • Growing evidence supports its multifaceted anti-tumor properties.

Purpose of the Study:

  • To summarize the anti-tumor actions of honokiol.
  • To review the mechanisms of honokiol-induced cell death.
  • To explore honokiol's potential in overcoming multiple drug resistance.

Main Methods:

  • Literature review of preclinical and clinical studies.
  • Analysis of honokiol's molecular targets and pathways.
  • Evaluation of honokiol's efficacy in various cancer models.

Main Results:

  • Honokiol induces multiple forms of tumor cell death, including apoptosis and autophagy.
  • It exhibits anti-angiogenic and anti-metastatic effects.
  • Honokiol demonstrates potential in reversing multiple drug resistance in cancer cells.

Conclusions:

  • Honokiol possesses significant anti-cancer potential through various mechanisms.
  • Its ability to induce cell death and overcome drug resistance warrants further clinical investigation.
  • Honokiol represents a promising candidate for novel cancer therapies.