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Caspase deficiency has been identified as a cause of tumor development. Tumor growth can occur by a combination of factors, including a mutation in a cell cycle gene which removes the restraints on cell growth, combined with mutations in apoptotic proteins such as caspases that would respond by inducing cell death in abnormally growing cells. [5]
Caspase-2 is an important enzyme in the cysteine aspartate protease family, known as caspases, which are central to the regulation of apoptosis and, in certain cases, inflammation. While many caspases are mainly involved in the initiation and execution of cell death, caspase-2 has a broader range of functions.
Six years passed from 1972 to 1978/1980 until the discovery and evaluation of internucleosomal fragmentation of DNA during apoptotic cell death as a hallmark of apoptosis. Since 1972 ( Kerr , Wyllie , and Currie [ 9 ] ), it is accepted that glucocorticoid-induced death of lymphocytes is a form of apoptosis.
A set of recommendations for describing the terminology of cell death was proposed by the Nomenclature Committee on Cell Death (NCCD) in 2009, because misusing words and concepts may slow down progress in the area of cell death research. [1] The classic definition of death defines it as a state characterized by the cessation of signs of life.
Overview of signal transduction pathways involved in apoptosis. Cell death is the event of a biological cell ceasing to carry out its functions. This may be the result of the natural process of old cells dying and being replaced by new ones, as in programmed cell death, or may result from factors such as diseases, localized injury, or the death of the organism of which the cells are part.
Caspase-8 is a 51 kb gene with 13 exons encoding for a 496 amino acid protein that maps to 2q33.1. [4] Caspase-8 is involved in the initiation of the cell death signal cascade. Cell death counters proliferation of lymphocytes, allowing the immune system to achieve dynamic homeostasis whereby it can defend against pathogens and avoid ...
For many years, neither "apoptosis" nor "programmed cell death" was a highly cited term. Two discoveries brought cell death from obscurity to a major field of research: identification of the first component of the cell death control and effector mechanisms, and linkage of abnormalities in cell death to human disease, in particular cancer.
Caspase-9 is an enzyme that in humans is encoded by the CASP9 gene.It is an initiator caspase, [5] critical to the apoptotic pathway found in many tissues. [6] Caspase-9 homologs have been identified in all mammals for which they are known to exist, such as Mus musculus and Pan troglodytes.