A scientist was working on "specific toxic material" and he had identified that because of this toxin, cytoplasmic levels of cAMP was increased and

A scientist was working on "specific toxic material" and he had identified that because of this toxin, cytoplasmic levels of cAMP was increased and this elevated levels disturbed overall homeostasis of living system. By recalling your signalling pathways, can you specially pinpoint the area, where this toxin is inducing its effects?