Third, our analysis lists potential candidate enzymes for bioengineering, i.e. certain natural enzymes can be removed, introduced, or changed so that we can select a favorable pathway to enforce production of a metabolite of interest, or block pathways leading to certain unfavorable products.
The regularizer in Equation (3) uses the pathway information matrix to enforce pathway-level similarity.
Activation of the p53/p21WAF1 and p16INK4a/pRb pathways represent two alternative scenarios for senescence initiation, and there is evidence that parallel activation of both pathways leads to enforced senescence [ 6], also referred to as "deep senescence" [ 7].
UVB irradiation is known to induce aspects of a DNA damage response, and it was reported that knocking down p53 alleviates but does not abrogate the senescence response of HDF to repeated UVB stress [ 11], suggesting that both p53-dependent and -independent pathways may cooperate to enforce UVB-induced senescence.
Our data indicate that miR-203 is an upstream governor of several distinct cellular pathways that converge to enforce a poorly metastatic cell state, and highlight the importance of cellular context in determining the effects of a specific miRNA on metastasis.
In eukaryotic cells, proteasomes perform crucial roles in many cellular pathways by degrading proteins to enforce quality control and regulate many cellular processes such as cell cycle progression, signal transduction, cell death, immune responses, metabolism, protein-quality control, and development.
Such a senescence barrier has been previously described in SVts8 fibroblast cells where the p16INK4a/Rb pathway appears to cooperate with mitogenic signals to enforce an irreversible block of cytokinesis through the production of reactive oxygen species.
The study investigator performed daily ward rounds to enforce compliance on the usage of the pathway.
Proteasomes are large complexes that perform crucial roles in many cellular pathways by degrading proteins in the cytosol and nucleus of eukaryotic cells to enforce quality control and regulate many basic cellular processes.
Primarily, these cells act by enabling Mtb-infected macrophages to enforce phagosome-lysosome fusion, produce reactive nitrogen intermediates (RNIs), and activate autophagy pathways.
