title: [Lysosomal membrane permeabilization as apoptogenic factor].
abstract: Lysosomal membrane labilizing agents (incl. proapoptotic proteins of Bcl-2 family, LAPF, p53), estimation of lysosomal membrane permeabilization in living cells, the new data on differential permeabilization of lysosomal membranes, membrane stabilizing factors (incl. Hsp70), relations between lysosomal membrane damage, and initiation of apoptosis were considered. Signal effect of lysosomal membrane permeabilization is caused preferentially by release of cathepsin B and D in cytosol. Subsequent numerous pathways of apoptogenic signalization include proteolytic attack/activation on signal cytosolic proteins, mitochondria, procaspases, cell nuclei. The mainstream of the cell damage is connected with activation pf proapoptotic Bid and Bax, leading to permeabilization of the outer mitochondrial membrane, release of cytochrome c into cytosol and activation of caspase cascade. Translocation of the lysosoma enzymes in cytosol is capable to induce both the caspase-dependent and caspase-independent paths of apoptosis.
authors.forename: A B
authors.initials: AB
authors.lastname: Pupyshev
mesh_terms: D000818:Animals; D017209:Apoptosis; D051017:Apoptosis Regulatory Proteins / Q000235:genetics / Q000378:metabolism; D020169:Caspases / Q000235:genetics / Q000378:metabolism; D002401:Cathepsin B / Q000235:genetics / Q000378:metabolism; D002402:Cathepsin D / Q000235:genetics / Q000378:metabolism; D002463:Cell Membrane Permeability; D002467:Cell Nucleus / Q000235:genetics / Q000378:metabolism; D045304:Cytochromes c / Q000378:metabolism; D003600:Cytosol / Q000378:metabolism; D015870:Gene Expression; D018840:HSP70 Heat-Shock Proteins / Q000235:genetics / Q000378:metabolism; D006801:Humans; D007425:Intracellular Membranes / Q000378:metabolism; D008247:Lysosomes / Q000378:metabolism*; D008928:Mitochondria / Q000378:metabolism; D009336:Necrosis; D019253:Proto-Oncogene Proteins c-bcl-2 / Q000235:genetics / Q000378:metabolism; D015398:Signal Transduction; D016159:Tumor Suppressor Protein p53 / Q000235:genetics / Q000378:metabolism
chemical_list: D051017:Apoptosis Regulatory Proteins; D018840:HSP70 Heat-Shock Proteins; C508358:PLEKHF1 protein, human; D019253:Proto-Oncogene Proteins c-bcl-2; D016159:Tumor Suppressor Protein p53; D045304:Cytochromes c; D020169:Caspases; D002401:Cathepsin B; D002402:Cathepsin D