Browsing Biochemistry (Scholarly Articles) by Author "Samali, Afshin"
Now showing items 1-11 of 11
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Bcl-2 family on guard at the ER
Samali, Afshin; Sanjeev, Gupta; Ní Chonghaile, Tríona; MacDonald, David C; Szegezdi, Eva (American Physiological Society, 2009)The endoplasmic reticulum (ER) is the main site for protein folding, lipid biosynthesis and calcium storage in the cell. Disturbances of these critical cellular functions lead to ER stress. The ER responds to disturbances ... -
Generation of rationally-designed nerve growth factor (NGF) variants with receptor specificity
Carleton, Laura A.; Chakravarthy, Reka; van der Sloot, Almer M.; Mnich, Katarzyna; Serrano, Luis; Samali, Afshin; Gorman, Adrienne M. (Elsevier, 2017-11-03)Nerve growth factor (NGF) is the prototypic member of the neurotrophin family and binds two receptors, TrkA and the 75 kDa neurotrophin receptor (p75NTR), through which diverse and sometimes opposing effects are mediated. ... -
HSP72 Protects Cells from ER Stress-induced Apoptosis via Enhancement of IRE1¿-XBP1 Signaling through a Physical Interaction
Gupta, Sanjeev; Deepti, Ayswaria; Deegan, Shane; Samali, Afshin (2010)Endoplasmic reticulum (ER) stress is a feature of secretory cells and of many diseases including cancer, neurodegeneration, and diabetes. Adaptation to ER stress depends on the activation of a signal transduction pathway ... -
The integrated stress response
Pakos-Zebrucka, Karolina; Koryga, Izabela; Mnich, Katarzyna; Ljujic, Mila; Samali, Afshin; Gorman, Adrienne M. (EMBO Press, 2016-09-14)In response to diverse stress stimuli, eukaryotic cells activate a common adaptive pathway, termed the integrated stress response (ISR), to restore cellular homeostasis. The core event in this pathway is the phosphorylation ... -
Mechanisms of ER Stress-Mediated Mitochondrial Membrane Permeabilization
Gupta, Sanjeev; Cuffe, Lorraine; Szegezdi, Eva; Logue, Susan E.; Neary, Catherine; Healy, Sandra; Samali, Afshin (2010)During apoptosis, the process of mitochondrial outer membrane permeabilization (MOMP) represents a point-of-no-return as it commits the cell to death. Here we have assessed the role of caspases, Bcl-2 family members and ... -
Methods for Monitoring Endoplasmic Reticulum Stress and the Unfolded Protein Response
Samali, Afshin; FitzGerald, Una; Deegan, Shane; Gupta, Sanjeev (2010)The endoplasmic reticulum (ER) is the site of folding of membrane and secreted proteins in the cell. Physiological or pathological processes that disturb protein folding in the endoplasmic reticulum cause ER stress and ... -
Nerve growth factor-mediated inhibition of apoptosis post-caspase activation is due to removal of active caspase-3 in a lysosome-dependent manner
Carleton, Laura A.; Doyle, Karen M.; Samali, Afshin; Gorman, Adrienne; Mnich, Katarzyna; Kavanagh, Edel T. (Nature Publishing Group, 2014-05-01)Nerve growth factor (NGF) is well characterised as an important pro-survival factor in neuronal cells that can inhibit apoptotic cell death upstream of mitochondrial outer membrane permeabilisation. Here we addressed the ... -
The Proteasome Inhibitor Bortezomib Sensitizes AML with Myelomonocytic Differentiation to TRAIL Mediated Apoptosis
van Dijk, Marianne; Murphy, Eoin; Morrell, Ruth; O'Dwyer, Michael; Szegezdi, Eva; Samali, Afshin (2011)Acute myeloid leukemia (AML) is an aggressive stem cell malignancy that is difficult to treat. There are limitations to the current treatment regimes especially after disease relapse, and therefore new therapeutic agents ... -
Rapid and efficient cancer cell killing mediated by high-affinity death receptor homotrimerizing TRAIL variants
Natoni, Alessandro; Szegezdi, Eva; Samali, Afshin (Macmillan Publishers Limited, 2010)The tumour necrosis factor family member TNF-related apoptosis-inducing ligand (TRAIL) selectively induces apoptosis in a variety of cancer cells through the activation of death receptors 4 (DR4) and 5 (DR5) and is considered ... -
RIP2 enhances cell survival by activation of NF-ĸB in triple negative breast cancer cells
Jaafar, Rola; Mnich, Katarzyna; Dolan, Sarah; Hillis, Jennifer; Almanza, Aitor; Logue, Susan E.; Samali, Afshin; Gorman, Adrienne M. (Elsevier, 2018-02-06)Receptor-interacting protein 2 (RIP2) is an essential mediator of inflammation and innate immunity, but little is known about its role outside the immune system. Recently, RIP2 has been linked to chemoresistance of triple ... -
Stress management at the ER: regulators of ER stress-induced apoptosis.
Gorman, Adrienne M.; Healy, Sandra J.M.; Jäger, Richard; Samali, Afshin (Elsevier, 2012-02-17)The endoplasmic reticulum (ER) is an elaborate cellular organelle essential for cell function and survival. Conditions that interfere with ER function lead to the accumulation and aggregation of unfolded proteins which are ...