caspase-mediated cell death
Noun: A specific form of programmed cell death, also known as apoptosis, in which a cascade of enzymes called caspases is activated. This activation leads to the systematic dismantling and death of the cell. It is a crucial, controlled process for normal development, tissue homeostasis, and the removal of damaged or potentially dangerous cells in multicellular animals (metazoans).
This term is used in biological and medical contexts to describe the fundamental, regulated process of cellular self-destruction. - It is often discussed in contrast to necrotic cell death, which is a form of traumatic, unplanned cell death. - The term highlights the central role of caspase enzymes in executing the death program.
- In a research paper: "The study demonstrated that the chemotherapeutic agent induced caspase-mediated cell death in the tumor cell line."
- In a textbook: "During embryonic development, caspase-mediated cell death is essential for shaping tissues, such as the separation of fingers and toes."
- In a medical context: "A failure in the pathways of caspase-mediated cell death can contribute to diseases like cancer, where cells survive abnormally, or neurodegenerative disorders, where excessive cell death occurs."
- Synonymous with Apoptosis: In most scientific literature, "caspase-mediated cell death" is synonymous with the classical, intrinsic pathway of apoptosis. It emphasizes the biochemical mechanism.
- Caspase-Independent Pathways: The term specifically excludes other forms of programmed cell death, such as necroptosis or autophagy, which do not primarily rely on caspase activation.
- Apoptosis (n): The more general and commonly used term for programmed cell death, of which caspase-mediated death is the primary type.
- Programmed Cell Death (PCD) (n): A broader category that includes apoptosis and other regulated forms of cell death.
- Caspase (n): A family of protease enzymes that play essential roles in apoptosis. They are the key mediators referenced in this term.
- Necrosis (n): A form of cell injury which results in the premature death of cells, characterized by cell swelling and rupture, in contrast to the controlled process of caspase-mediated death.
- Apoptosis
- Programmed Cell Death (PCD) (in its specific, caspase-dependent form)
- To undergo caspase-mediated cell death: The process a cell experiences.
- The infected cells were signaled to undergo caspase-mediated cell death.
- Activation of caspase-mediated cell death: Referring to the initiation of the process.
- The protein deficiency led to the activation of caspase-mediated cell death.
This is a highly specialized compound noun used almost exclusively in cellular biology, biochemistry, and medicine. It is not used in everyday language. The hyphenation ("caspase-mediated") is standard, indicating that "caspase" modifies the type of "cell death."
- a type of cell death in which the cell uses specialized cellular machinery to kill itself; a cell suicide mechanism that enables metazoans to control cell number and eliminate cells that threaten the animal's survival