However, at later time points pathway activation results in a decreased size of cerebral cortex because of a reduced proliferative progenitor cell pool and increased apoptosis (Ivaniutsin et al, 2009).
At later time point, pathways such as RNA degradation, cysteine and methionine metabolism, glycerolipid metabolism, tyrosine metabolism and nitrogen metabolism were enriched (Fig. 4b).
At later time point, pathways overrepresented among up-regulated genes include glycosylphosphatidylinositol (GPI -anchor biosynthesis, pentose phosphate pathway, GPI -anchorgluconeogenesis, starch and sucrose metabiosynthesisctose metabolism, N-glycan biosynthesis and steroid biosynthesis (Fig. 4a).
The approach is convincing as it shows how complex multiparameter data sets can be subjected to bioinformatic analyses and pin-point pathways that may later be targets for therapeutic intervention.
In BioCarta pathways, down-regulated gene set were enriched in the mTOR signalling pathway (p-value = 7·10−5) and the G1/S check point pathway (p-value = 5·10−3) (Table 2).
We have previously used temperature-jump (T-jump) methods to demonstrate that the reaction landscape of lactate dehydrogenase branches at multiple points creating pathways with varied reactivity.
Thus each plot contains 1,141 data points (163 pathways times 7 phenotypes).
Further, the analysis points to pathways where de novo or acquired resistance mechanisms may be the important route.
Along these lines, CellFateScout gives the user a choice to focus only on nodes (genes) that she would like to investigate as start or end points of pathways.
There are also semi-official and informal crossing points and pathways through the hills that permit local residents to cross the border with little or no regulation.
