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. 2019 Sep 12;10:2170. doi: 10.3389/fimmu.2019.02170

Figure 6.

Figure 6

Proposed model of miR-142-3p, which targets the adenylyl cyclase 9/cAMP-mediated suppression of Tregs. We propose that miR-142-3p overexpression in GPA patients reduces ADCY9 levels, which leads to less conversion of ATP to cAMP upon stimulation. cAMP can be transferred to effector cells via a Gap junction (GJ). Upon transfection, cAMP levels in effector cells increase, which induces metabolic disruption and inhibits IL-2 production and cell proliferation. Increased miR-142-3p levels therefore decrease Treg function.