BMP9 Modulates IL-33 Signaling to Mitigate EndMT in Pulmonary Arterial Hypertension

BMP9 plays a protective role against IL-33-induced EndMT in PAECs by upregulating sST2 expression and neutralizing IL-33, suggesting that targeting the IL-33 signaling pathway may represent a promising therapeutic strategy to mitigate EndMT in PAH.