Apoptosis Induced by Cytotoxic Cells of the Immune System: the Role of Heat Shock Protein 70 and Sulphatases 1 and 2 in Granzyme B-induced Apoptosis - Sara Yasemin Demiroglu - Books - Suedwestdeutscher Verlag fuer Hochschuls - 9783838111704 - October 21, 2009
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Apoptosis Induced by Cytotoxic Cells of the Immune System: the Role of Heat Shock Protein 70 and Sulphatases 1 and 2 in Granzyme B-induced Apoptosis

Sara Yasemin Demiroglu

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Apoptosis Induced by Cytotoxic Cells of the Immune System: the Role of Heat Shock Protein 70 and Sulphatases 1 and 2 in Granzyme B-induced Apoptosis

Intracellular heat shock protein 70 (HSP70) belongs to the stress response system and can protect cells from different apoptotic stimuli. Extracellular HSP70 on the other hand can activate cells of the innate and adaptive immune system. Acute overexpression of intracellular HSP70 could even increase the susceptibility of melanoma cells to cytotoxic T-lymphocytes (CTLs) that use the granule-exocytosis pathway for killing (Dressel et al. 1999). To decipher the molecular pathway of this increased susceptibility to CTLs, the effect of the acute overexpression of HSP70 on gene expression was analysed in cells, in which Hsp70 is under the control of a tetracycline-inducible promoter. To reduce the complexity of CTL-induced apoptosis, further experiments were performed with granzyme (Gr) B, a component of the cytotoxic granules of CTLs and NK cells, that has been shown to interact with HSP70. Heparan sulphates on the other hand are involved in GrB-binding to target cells of CTLs and are modified in their sulphation pattern by sulphatases 1 and 2. The role of HSP70 and sulphatases 1 and 2 in GrB-induced apoptosis is analysed.

Media Books     Paperback Book   (Book with soft cover and glued back)
Released October 21, 2009
ISBN13 9783838111704
Publishers Suedwestdeutscher Verlag fuer Hochschuls
Pages 192
Dimensions 225 × 11 × 150 mm   ·   304 g
Language German