Given the importance of both the MAPK and PI3K/Akt pathways in melanoma, simultaneously targeting the two pathways, instead of either alone, may prove to be a particularly effective therapeutic strategy for this cancer.
If the ispA mutation works through one of these pathways, repression of either hepS (encoding HPP synthase) or uppS (encoding UPP synthase) should also promote L-form growth.
In GBM, the preferential activation of the PI3K pathway, instead of either the STAT3- or MAPK-specific cell proliferation signaling modules, has been reported in EGFRvIII-expressing cells [ 52].
This suggests that peg2-mediated triploid seed rescue occurs independently of normalized AGL and PEG expression and may affect a pathway downstream of either AGLs or PEGs.
There is substantial cross-talk between PI3K/AKT and MEK/ERK pathways, and the inhibition of either pathway leads to activation of the other one.
The absence of other H3 + formation pathways from either of the two molecules can be intuited from their molecular structures (shown in Fig. 2).
Thus it is possible that combination of IL-22 and TNF-α induce more phosphorylation of Erk/MAPK pathway than either of IL-22 or TNF-α alone resulting in more proliferation of FLS.
Since these pathways are stoichiometrically equivalent, the use of either pathway allows optimal biomass production.
Therapeutic posttranscriptional gene silencing takes advantage of the endogenous RNAi pathway through delivery of either chemically synthesized siRNAs, or transgenes expressing hairpin-based inhibitory RNAs (e.g., shRNAs and artificial miRNAs).
The suggested kinetic model considered two parallel pathways of electron transfer: either to an adsorbed intermediate (radical) or to the respective metastable complex with a proton donor.
Hence, the inhibition of both EGFR and VEGFR signaling pathways simultaneously may provide greater benefit than blockade of either pathway alone.
