PERK-governed pathway was also found to have a role in ER stress-induced autophagy.
What are the exact interaction mechanisms and significance of crosstalk network among PERK-governed pathways in ER stress?
In mammalian cells, UPR signaling is conducted by key three major ER resident transducers- governed signaling pathways to induce apoptosis under severe ER stress, namely the inositol- requiring enzyme-1 (IRE1), activating transcription factor-6 (and6) and protein kinase RNA (PKR)- like ER kinase (PERK) [ 20, 21].
However, according to several previous studies of our team and others, there are some uniqueness of PERK compared with ATF6- or IRE1-governed signaling pathways in inducing apoptosis and autophagy.
Differentiation in the brain and in neurosphere models is known to be governed via intrinsic pathways and via responses to extracellular cues and by cell-cell contact [23], [24], all of which can be regulated by Cxs.
In addition, the senescence response depends on two potent tumor suppressor pathways: that governed by the p53 protein and that governed by the pRB and p16INK4a proteins.
These findings indicated that although the role of each component of the DNA damage checkpoint and DNA replication checkpoint is mostly same between the two fission yeasts, the DNA damage checkpoint was the only pathway that governed DNA damage-dependent hyphal growth.
Intuitively, measurements that involve gene u are not independent from each other but are rather governed by the gene pathways in which u participates.
According to the Diffk values (|Diffk| ≥ 0.75) for these networks, 16 genes (Table 4), including 2 lncRNAs and 14 mRNAs, showed different connectivities between PDLSCs and BMSCs, indicating that their roles were different in core pathways that governed MSC functions.
Moreover, many xenohormetic phytochemicals and mildly toxic hormetic molecules exhibit a cytostatic effect by attenuating TOR-governed cellular signaling pathways and cellular functions [ 39].
In our hypothesis, the species of heterotrophic organisms that have been selected for the most efficient mechanisms preventing the hyper-activation of TOR-governed cellular signaling pathways and cellular functions following the completion of developmental growth are expected to evolve the most effective anti-aging mechanisms.
