Table 1 Pro-oncogenic effects of cagA-positive H. pylori infection.
Related cancer hallmarks | Pro-oncogenic actions | Molecular mechanisms | CagA dependency | Responsible factors | Reference no. | |
---|---|---|---|---|---|---|
Cell autonomous pro-oncogenic actions | Sustained proliferative signaling | RAS-ERK signaling activation | Deregulation of SHP2 | pY-CagA | EPIpYA-C/EPIpYA-D | |
Wnt signal activation | Complex with E-cadherin | CagA | CM motif | |||
Activation of cMet-PI3K-AKT signaling | ||||||
Sequesteration of GSK3β | C-terminal region | |||||
Degradation of RUNX3 | − | |||||
Growth suppressors | Degradation of RUNX3 | − | CagA | − | ||
Degradation of p53 | Complex with ASPP2 | N-terminal region | ||||
Activation of HDM2 and ARF-BP1 | − | |||||
Inactivation of p53 | Ectopic expression of AID | |||||
Activate invasion and metastasis | Induction of hummingbird cell | Deregulation of SHP2 | pY-CagA | EPIpYA-C/EPIpYA-D | ||
Perturbation of focal adhesion dynamics | Dregulation of SHP2-FAK signaling | |||||
Loss of apicobasal cell polarity | Inhibition of PAR1b | CagA | CM motif | |||
Tight junctional defect | Inhibition of PAR1b | |||||
Adherence junctional defect | Complex with CRK | pY-CagA | Tyrosine phosphorylation | |||
Altered stress fiber formation | Inhibition of PAR1b-GEF H1 signaling | CagA | CM motif | |||
Induction of transdifferentiation | Ectopic expression of CDX1 and CDX2 | − | ||||
EMT-like morphological change | Junctional and apicobasal polarity defects | |||||
Cell death | Resistant to apoptosis | Complex with ASPP2 | CagA | N-terminal region | ||
Promoting cell survival | Activation of MEK-ERK-MCL1 signaling | − | ||||
Genomic instability and mutation | Mitotic defects | Inhibition of PAR1b | CagA | CM motif | ||
Hyper mutated phenotype | Ectopic expression of AID | − | ||||
CpG hypermethylation of MGMT | − | Potentiated by cagA | ||||
Induction of DNA double strand break | Inhibition of PAR1b | CagA | CM motif | |||
− | − | Potentiated by cagPAI | ||||
Non-cell-autonomous pro-oncogenic actions | Induction of tumor-promoting inflammation | Sensitizing to NF-κB activation | Reduction of IκB in cells | CagA | CM motif | |
Activation of NF-κB | − | − | ||||
IKK activation via cMet-PI3K-AKT signaling | CM motif | |||||
IKK activation via TAK1-TRAF6 signaling | − | |||||
Induction of IL-1β | Inflammasome activation in epithelial cells | |||||
Induction of IL-8 | Activation of PI3K | pY-CagA | EPIpYA-B | |||
Activation of STAT3 | IL-6/gp130 signaling | CagA | pY independent | |||
Activation of NF-κB | Activation of Nod1 | − | Peptidoglycan | |||
Activation of ALPK1-TIFA signaling | ADP heptose | |||||
Activation of TLR2, TLR4 signaling | Lipopolysaccharide | |||||
Activation of NLRP3-inflammasome | cag PAI |