Rho-kinase (ROCK), identified as a downstream target of Rho A, regulates on endothelial permeability mainly via the actin cytoskeleton formation and contractility implementation.
Since IL8 was up-regulated at both the mRNA and protein levels, indicating that IL8 is a downstream target of TWIST1, we, therefore, focused on elucidating the regulatory pathway of IL8.
p70S6K1 is a downstream target of Akt and its activation depends on the phosphorylation of several residues of the p70S6K1 protein, such as Ser-389 and Ser-421/Thr-424 [29].
Notably, THC activity seemed to depend on d4E-BP, a downstream target of foxo.
The impact of such a difference on a downstream targets was recently shown in a breast cancer study where AKT and mTOR phosphorylation were higher in cases with low PTEN expression compared to those with high PTEN expression [ 46].
Amplifications and deletions of chromosomal segments are powerful driver aberrations, as they can possibly affect many genes on the segments and downstream targets on other loci.
One possible mechanism to establish these trans-acting associations is through intermediate regulators on segments: segment CNVs have cis-acting effects on the expressions of their constituent regulators, which in turn modulate the expressions of downstream targets on other loci.
Activation of several NF- κB subunits demonstrated at the levels of gene transcripts, proteins and over-connectivity with upstream regulators and downstream targets on the disease network, supports the notion that NF- κB is key convergence hub in this pathology.
Our study relays information based entirely on the cross-linking of endogenous HwHog1 and RNA polymerase II with their downstream targets on the chromatin, showing actual physiological interactions never studied before in eukaryotic cells adapted to such an extremely hyperosmotic condition.
This study reveals that pleiotropic effects of IIS pathway mutations can converge on a common downstream target, vitellogenesis, as a mechanism to modulate longevity.
