Related Experiment Video
Updated: Jul 31, 2026

Strategies for Tracking Anastasis, A Cell Survival Phenomenon that Reverses Apoptosis
Published on: February 16, 2015
[Caspases and apoptosis: die and let live]
Grzegorz Nalepa1, Ewa Zukowska-Szczechowska
1Katedry i Kliniki Chorób Wewnetrznych, Diabetologii i Nefrologii w Zabrzu.
Abstract:
Apoptosis (genetically programmed cell death) plays a key role in human physiology and pathogenesis of various diseases, including cancer. A suicide of cell can be initiated by many different factors, but activation of caspases, which are a special class of proteolytic enzymes, is always involved in this process. Activation of caspases may be achieved by several molecular pathways: the best known stimuli triggering caspase cascade are stimulation of Fas or TNF receptors, release of cytochrome c from the cellular mitochondria and exposure to granzymes, which are secreted by cytotoxic T cells. Activated caspases digest many cellular proteins responsible for cell cycle regulation (e.g. RB, MDM2), DNA damage recognition and repair (e.g. DNA-PK, P53, PARP), and regulation of the cellular structure (e.g. actin and lamins). All these functional and structural protein modifications lead directly to apoptosis. Further research on the mechanisms controlling caspase activity and the modes of action will provide better insight into pathogenesis of cancer and other disorders. It may be even the first step to design new and more efficient methods of conventional tumor treatment or gene therapy.
Insights
Apoptosis, or programmed cell death, is crucial in health and disease, especially cancer. Caspase activation is central to this process, offering potential for novel cancer therapies.
Area of Science:
- Cell Biology
- Biochemistry
- Oncology
Background:
- Apoptosis (genetically programmed cell death) is vital in human physiology and disease pathogenesis, notably cancer.
- Caspase activation, a hallmark of apoptosis, can be triggered by multiple molecular pathways.
Purpose of the Study:
- To elucidate the central role of caspases in apoptosis.
- To explore the implications of caspase activity in cancer pathogenesis and treatment.
Main Methods:
- Review of molecular pathways initiating caspase activation (Fas/TNF receptors, cytochrome c release, granzymes).
- Analysis of cellular proteins targeted by activated caspases (cell cycle, DNA repair, structural proteins).
Main Results:
- Caspase activation leads to the digestion of key cellular proteins, resulting in apoptosis.
- Identified proteins targeted include those regulating cell cycle, DNA repair, and cellular structure.
Conclusions:
- Understanding caspase mechanisms is key to deciphering cancer pathogenesis.
- Further research may lead to improved conventional tumor treatments and gene therapies.
Related Concept Videos
Apoptosis
Caspases
The Extrinsic Apoptotic Pathway
The Intrinsic Apoptotic Pathway
Phagocytosis of Apoptotic Cells
Normal cells contain receptors that prevent them from being recognized by phagocytes.
Cellular Injury V: Apoptosis and Autophagy

