Clinical implications of cellular stress responses

Clinical implications of cellular stress responses.

Cellular stress response is a reaction to changes or fluctuations of extracellular conditions that damage the structure and function of macromolecules. Different stressors trigger different cellular responses, namely induce cell repair mechanisms, induce cell responses that result in temporary adaptation to some stressors, induce autophagy or trigger cell death. Inability to repair the damage o...

Initiating Cellular Stress Responses

The phosphoinositide 3-kinase related kinases (PIKKs) mediate responses to diverse stresses, including DNA double-strand breaks (DSBs), abnormal replication fork progression, the recognition of premature termination codons in mRNAs, and inadequate nutrient availability. Rigorous control of these kinases limits cellular damage and promotes cell viability in the presence of stress. Control mechan...

Cellular Stress Responses

MicroRNA responses to cellular stress.

Recent work has begun to explore the instrumental role that small noncoding RNA species, particularly microRNAs (miRNA), have both in classifying human tumors and in directing embryonic development. These studies suggest that developmental programs in essentially all organisms studied are set, in part, by varied expressions of miRNAs and that neoplasia is characterized by altered expression of ...

Cellular stress responses in protein misfolding diseases

Many human diseases, particularly neurodegenerative diseases, are associated with protein misfolding. Cellular protein quality control includes all processes that ensure proper protein folding and thus prevent the toxic consequences of protein misfolding. The heat shock response (HSR) and the unfolded protein response (UPR) are major stress response pathways within protein quality control that ...