Some of these, such as NS1 or PB1-F2, adaptedptod to prevent cellular and host immunity by manipulating multiple host signaling cascades [ 5- 7].
Nevertheless, incredibly versatile interaction of the bacterial protein with host molecules suggests that, upon delivery, CagA may act as a pathogenic scaffold/adaptor, which simultaneously perturbs multiple host signalling pathways and thereby promotes transformation.
Using gene-expression arrays we found that multiple host cell signal transduction pathways were activated by ATIII in HIV-1 infected cells but not in uninfected controls.
CagA acts as an initiator that activates multiple host cell signaling pathways via direct or indirect impacts on vital signaling proteins, thereby leading to signaling pathway-dependent oncogene upregulation (Table 1).
Work in the last ten years has shown that the cagPAI encodes type-IV secretion system (T4SS) which injects CagA into target cells where it interferes with multiple host cell signaling cascades [ 9, 10].
Once delivered, CagA can be phosphorylated by tyrosine kinases Src and Abl and interacts with a large number of cellular proteins to trigger multiple effects on host signal transduction pathways to the nucleus, cytoskeleton and cell junctions [23].
In the method, the host signal vector is quantized to embed a multiple-bit watermark, and meanwhile, the quantized signal is made to locate in the detectable region defined in the context of spread spectrum watermarking.
Targeting multiple host regulatory pathways through a single effector molecule would allow bacteria to more efficiently modulate complex host signaling networks and finely tune a specific environment for their lifestyle.
We hypothesize that APL1C may be a functionally upstream signaling node responsible for the coordinated Rel1-dependent control of multiple host protective factors.
Therapeutic targeting of FAK kinase activity using small-molecule inhibitors will inhibit FAK signaling not only in tumor cells, but also potentially in multiple host cell types.
