Importantly, Q-body formation enhances cellular fitness during stress.
The controlled generation of ROS, particularly H2O2, is necessary to maintain cellular fitness.
Liu, X. et al. Evolutionary conservation of the clk-1-dependent mechanism of longevity: loss of mclk1 increases cellular fitness and lifespan in mice.
Escusa-Toret S, Vonk WI, Frydman J. Spatial sequestration of misfolded proteins by a dynamic chaperone pathway enhances cellular fitness during stress.
Exogenously bolstering the proteostasis network increases cellular fitness in the face of challenges to ribosome assembly, demonstrating the direct contribution of orphan r-proteins to cellular phenotypes.
Metabolism and epigenetics in the nervous system: Creating cellular fitness and resistance to neuronal death in neurological conditions via modulation of oxygen-, iron-, and 2-oxoglutarate-dependent dioxygenases.
Their presence is critical for cellular fitness because they minimize the effective cell volume, allowing faster adaptation to environmental changes that require de novo synthesis of envelope proteins.
We speculate that alteration of the DNA-damage response and chromatin/histone biology are both paths by which cellular fitness of CLL cells are enhanced, and can lead to BCR-signalling-independent growth.
In a strain lacking RF-1, phosphoserine phosphatase, and where seven UAG codons residing in essential genes were converted to UAA, phosphoserine incorporation into GFP and WNK4 was significantly elevated, but with an accompanying loss in cellular fitness and viability.
Other mutations, however, do not change the phenotype of the cell or even decrease cellular fitness.
The widespread prevalence of CIN in cancer stands in contrast to evidence showing that aneuploidy induces a proteotoxic stress response and reduces cellular fitness [111].
