Detection of programmed electric cellphone expiry of HT1080 Cells by Fluorescence frantic Cell Scanning Introduction Apoptosis or programmed cell death is an inherently programmed phenomenan (Kerr et al, 1972) that occurs in each(prenominal) multicellular organisms, described as the opposite of mitosis, necessary in providing homeostasis and preventing uncontrollable cell proliferation that whitethorn blend to tumour spirtation. humiliation is also a form of cell death, polar to caspase-mediated cell death in that it is externally bring forth by factors such(prenominal) as injury, infection, poisoning and inflammation. Apoptosis operates via twain mechanisms, an intrinsic pathway initiated by the release of cytochrome c from mitochondrial membranes, or an extrinsic pathway initiated by the activation of surface death receptors by proapoptotic molecules such as caspase 8. Both pathways however lead to common morphological and biochemical features, that are characteris tic of apoptosis, such as DNA fragmentation, chromatin condensation, membrane blebbing, cell shrinkage and formation of apoptotic bodies (Kerr et al, 1972). The formation of apoptotic bodies during primordial stages of apoptosis, is ca utilise by the inversion of phosphatidylserine (PS), from the informal plasma membrane to the exterior membrane, and is necessary for phagocyte apprehension of the apoptotic cell.
The front end of PS, is indicative of cells in the early stage of apoptosis and can be spy using Annexin-V, a phospholipid bond protein with a high kinship toward PS in the presence of calcium ions. Annexin-V is usually co mbine with fluorescein isothiocyanate (FITC)! , a light molecule that allows the detection of apoptotic cells by flow cytometry. Figure 1: Translocation of PS to the outer cell membrane, and detection by Annexin-V binding. (MCBG3004 research laboratory Manual, 2011). Fluorescence activated cell see (FACS), is an analytical technique used to identify and separate different cells types by using light marker molecules such as FITC, that emit light of...If you extremity to get a dependable essay, order it on our website: BestEssayCheap.com
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