PMID- 37949331 OWN - NLM STAT- MEDLINE DCOM- 20231121 LR - 20231121 IS - 1096-1186 (Electronic) IS - 1043-6618 (Linking) VI - 197 DP - 2023 Nov TI - Targeting IL-11 system as a treatment of pulmonary arterial hypertension. PG - 106985 LID - S1043-6618(23)00341-9 [pii] LID - 10.1016/j.phrs.2023.106985 [doi] AB - IL-11 is linked to fibrotic diseases, but its role in pulmonary hypertension is unclear. We examined IL-11's involvement in idiopathic pulmonary arterial hypertension (iPAH). Using samples from control (n = 20) and iPAH (n = 6) subjects, we assessed IL-11 and IL-11Ralpha expression and localization through RT-qPCR, ELISA, immunohistochemistry, and immunofluorescence. A monocrotaline-induced PAH model helped evaluate the impact of siRNA-IL-11 on pulmonary artery remodeling and PH. The effects of recombinant human IL-11 and IL-11Ralpha on human pulmonary artery smooth muscle cell (HPASMC) proliferation, pulmonary artery endothelial cell (HPAEC) mesenchymal transition, monocyte interactions, endothelial tube formation, and precision cut lung slice (PCLS) pulmonary artery remodeling and contraction were evaluated. IL-11 and IL-11Ralpha were over-expressed in pulmonary arteries (3.2-fold and 75-fold respectively) and serum (1.5-fold and 2-fold respectively) of patients with iPAH. Therapeutic transient transfection with siRNA targeting IL-11 resulted in a significant reduction in pulmonary artery remodeling (by 98%), right heart hypertrophy (by 66%), and pulmonary hypertension (by 58%) in rats exposed to monocrotaline treatment. rhIL-11 and soluble rhIL-11Ralpha induce HPASMC proliferation and HPAEC to monocyte interactions, mesenchymal transition, and tube formation. Neutralizing monoclonal IL-11 and IL-11Ralpha antibodies inhibited TGFbeta1 and EDN-1 induced HPAEC to mesenchymal transition and HPASMC proliferation. In 3D PCLS, rhIL-11 and soluble rhIL-11Ralpha do not promote pulmonary artery contraction but sensitize PCLS pulmonary artery contraction induced by EDN-1. In summary, IL-11 and IL-11Ralpha are more highly expressed in the pulmonary arteries of iPAH patients and contribute to pulmonary artery remodeling and the development of PH. CI - Copyright (c) 2023 The Authors. Published by Elsevier Ltd.. All rights reserved. FAU - Milara, Javier AU - Milara J AD - CIBER de enfermedades respiratorias, Health Institute Carlos III, Valencia, Spain; Department of Pharmacology, Faculty of Medicine, University of Valencia, Spain; Pharmacy Unit, University General Hospital Consortium of Valencia, Spain. Electronic address: javier.milara-paya@uv.es. FAU - Roger, Ines AU - Roger I AD - CIBER de enfermedades respiratorias, Health Institute Carlos III, Valencia, Spain; Department of Pharmacology, Faculty of Medicine, University of Valencia, Spain. FAU - Montero, Paula AU - Montero P AD - Department of Pharmacology, Faculty of Medicine, University of Valencia, Spain. FAU - Artigues, Enrique AU - Artigues E AD - Surgery Unit, University General Hospital Consortium, Valencia, Spain. FAU - Escriva, Juan AU - Escriva J AD - Thoracic Surgery Unit, University and Polytechnic Hospital La Fe, Valencia, Spain. FAU - Perez-Vizcaino, Francisco AU - Perez-Vizcaino F AD - CIBER de enfermedades respiratorias, Health Institute Carlos III, Valencia, Spain; Dept of Pharmacology and Toxicology, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain. FAU - Cortijo, Julio AU - Cortijo J AD - CIBER de enfermedades respiratorias, Health Institute Carlos III, Valencia, Spain; Department of Pharmacology, Faculty of Medicine, University of Valencia, Spain; Research and Teaching Unit, University General Hospital Consortium, Valencia, Spain. LA - eng PT - Journal Article DEP - 20231109 PL - Netherlands TA - Pharmacol Res JT - Pharmacological research JID - 8907422 RN - 0 (Interleukin-11) RN - 73077K8HYV (Monocrotaline) RN - 0 (RNA, Small Interfering) SB - IM MH - Humans MH - Animals MH - Rats MH - *Pulmonary Arterial Hypertension MH - Familial Primary Pulmonary Hypertension MH - Interleukin-11 MH - *Hypertension, Pulmonary/chemically induced/drug therapy MH - Monocrotaline MH - Pulmonary Artery MH - RNA, Small Interfering/genetics OTO - NOTNLM OT - IL-11 OT - IL-11Ralpha OT - Monocrotaline OT - Pulmonary arterial hypertension OT - Pulmonary artery endothelial cells OT - Pulmonary artery smooth muscle cells COIS- Declaration of Competing Interest The authors declare that they have no conflict of interest. EDAT- 2023/11/11 11:43 MHDA- 2023/11/21 06:42 CRDT- 2023/11/10 19:16 PHST- 2023/09/07 00:00 [received] PHST- 2023/11/02 00:00 [revised] PHST- 2023/11/06 00:00 [accepted] PHST- 2023/11/21 06:42 [medline] PHST- 2023/11/11 11:43 [pubmed] PHST- 2023/11/10 19:16 [entrez] AID - S1043-6618(23)00341-9 [pii] AID - 10.1016/j.phrs.2023.106985 [doi] PST - ppublish SO - Pharmacol Res. 2023 Nov;197:106985. doi: 10.1016/j.phrs.2023.106985. Epub 2023 Nov 9.