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• W2036953459 abstract "Pulmonary hypertension (PH) is a complex disorder, spanning several known vascular cell types. Recently, we identified the microRNA-130/301 (miR-130/301) family as a regulator of multiple pro-proliferative pathways in PH, but the true breadth of influence of the miR-130/301 family across cell types in PH may be even more extensive. Here, we employed targeted network theory to identify additional pathogenic pathways regulated by miR-130/301, including those involving vasomotor tone. Guided by these predictions, we demonstrated, via gain- and loss-of-function experimentation in vitro and in vivo, that miR-130/301-specific control of the peroxisome proliferator-activated receptor γ regulates a panel of vasoactive factors communicating between diseased pulmonary vascular endothelial and smooth muscle cells. Of these, the vasoconstrictive factor endothelin-1 serves as an integral point of communication between the miR-130/301-peroxisome proliferator-activated receptor γ axis in endothelial cells and contractile function in smooth muscle cells. Thus, resulting from an in silico analysis of the architecture of the PH disease gene network coupled with molecular experimentation in vivo, these findings clarify the expanded role of the miR-130/301 family in the global regulation of PH. They further emphasize the importance of molecular cross-talk among the diverse cellular populations involved in PH.The microRNA-130/301 family regulates pulmonary hypertension (PH), but its breadth of activity remains undefined.ResultsPredicted by network analysis, microRNA-130/301 members regulate vasoactive factors such as endothelin-1 for pulmonary vascular cross-talk.ConclusionThe microRNA-130/301 family promotes vasoconstriction in PH.SignificanceThis microRNA-based mechanism of vascular cross-talk is central to the systems-wide actions of microRNA-130/301 in PH. Pulmonary hypertension (PH) is a complex disorder, spanning several known vascular cell types. Recently, we identified the microRNA-130/301 (miR-130/301) family as a regulator of multiple pro-proliferative pathways in PH, but the true breadth of influence of the miR-130/301 family across cell types in PH may be even more extensive. Here, we employed targeted network theory to identify additional pathogenic pathways regulated by miR-130/301, including those involving vasomotor tone. Guided by these predictions, we demonstrated, via gain- and loss-of-function experimentation in vitro and in vivo, that miR-130/301-specific control of the peroxisome proliferator-activated receptor γ regulates a panel of vasoactive factors communicating between diseased pulmonary vascular endothelial and smooth muscle cells. Of these, the vasoconstrictive factor endothelin-1 serves as an integral point of communication between the miR-130/301-peroxisome proliferator-activated receptor γ axis in endothelial cells and contractile function in smooth muscle cells. Thus, resulting from an in silico analysis of the architecture of the PH disease gene network coupled with molecular experimentation in vivo, these findings clarify the expanded role of the miR-130/301 family in the global regulation of PH. They further emphasize the importance of molecular cross-talk among the diverse cellular populations involved in PH.The microRNA-130/301 family regulates pulmonary hypertension (PH), but its breadth of activity remains undefined. Predicted by network analysis, microRNA-130/301 members regulate vasoactive factors such as endothelin-1 for pulmonary vascular cross-talk. The microRNA-130/301 family promotes vasoconstriction in PH." @default.
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• W2036953459 date "2015-01-01" @default.
• W2036953459 modified "2023-10-07" @default.
• W2036953459 title "The MicroRNA-130/301 Family Controls Vasoconstriction in Pulmonary Hypertension" @default.
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• W2036953459 doi "https://doi.org/10.1074/jbc.m114.617845" @default.
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