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Lysis (/ ˈ l aɪ s ɪ s / LY-sis; from Greek λῠ́σῐς lýsis 'loosening') is the breaking down of the membrane of a cell, often by viral, enzymic, or osmotic (that is, "lytic" / ˈ l ɪ t ɪ k / LIT-ik) mechanisms that compromise its integrity. A fluid containing the contents of lysed cells is called a lysate.
Morphological characteristics of karyolysis and other forms of nuclear destruction. Karyolysis (from Greek κάρυον karyon—kernel, seed, or nucleus), and λύσις lysis from λύειν lyein, "to separate") is the complete dissolution of the chromatin of a dying cell due to the enzymatic degradation by endonucleases.
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.
Inclusion bodies often then appear in the cell nucleus and/or cytoplasm of the host cell. The inclusion bodies can first be identified by light microscopy in patient blood smears or stained sections of infected tissues. However, to fully characterize their composition, electron microscopy must be performed. Inclusion bodies may either be ...
Programmed cell death (PCD; sometimes referred to as cellular suicide [1]) is the death of a cell as a result of events inside of a cell, such as apoptosis or autophagy. [2] [3] PCD is carried out in a biological process, which usually confers advantage during an organism's lifecycle.
Using these inhibitors it was discovered that cells can die while displaying a morphology similar to apoptosis without caspase activation. [116] Later studies linked this phenomenon to the release of AIF (apoptosis-inducing factor) from the mitochondria and its translocation into the nucleus mediated by its NLS (nuclear localization signal ...
Heterolysis (hetero = other/different, lysis = cell breakdown) is the spontaneous death and disintegration of a cell from factors other than itself. [1] In contrast, autolysis happens when a cell dies due to its own secretions or signaling. [1]
Alkaline lysis is often an initial step in molecular processes. A proper completion of alkaline lysis yields a pure bacterial plasmid. A plasmid is a circular DNA molecule found naturally in bacteria that replicates independently from chromosomal DNA. Plasmids can also less commonly be found in the other two domains: Archaea and Eukarya.