miRNA-like regulation is likely to recapitulate natural and evolutionarily selected modes of pathway control.
Different modes of pathway regulation may co-exist within the same cells or tissues, with alternative pathways varying in importance depending on cellular context.
In summary, mechanisms that control retinol storage in the liver appear to be critical "control points" in the mode-of-action pathway whereby excess vitamin A intake can lead to toxicity.
As explained in the introductory paper of this series (Julien et al., 2009), a systematic analysis of individual Key Events along the mode-of-action pathway between intake and effect of concern may contribute new insight with regard to dose-response, biological thresholds, and safe intake levels.
Establishing mode-of-action pathways increases confidence that reported effects are the result of pyrethroid action, particularly when the magnitude of those effects is small.
Herein, we demonstrate that the pre-surgical benefits of neoadjuvant therapy do not consistently predict for post-surgical disease recurrence and survival, with correlations dependent on treatment dose, surgical timing, treatment duration, and mode of VEGF pathway inhibition.
Such a mode of ERSU pathway regulation of ER inheritance is rather unusual when compared to cell cycle checkpoints that regulate DNA replication and transmission (Vleugel et al., 2012; Hayashi and Karlseder, 2013).
It is interesting to note that the subtle structural changes between robotnikinin (a direct binder of Shh) and compounds such as 29 (characterized here as a Smo antagonist) apparently lead to an additional mode of Shh pathway inhibition.
For the latter question, mode of VEGF pathway inhibition may play a key role in explaining different outcomes clinically and preclinically (Ebos et al, 2009; Singh & Ferrara, 2012; Guerin et al, 2013).
