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Anti-proliferative effect of selexipag active metabolite MRE-269 on pulmonary arterial smooth muscle cells from patients with chronic thromboembolic pulmonary hypertension

ABSTRACT: Anti-proliferative effect of selexipag active metabolite MRE-269 on pulmonary arterial smooth muscle cells from patients with chronic thromboembolic pulmonary hypertension

PROVIDER: PRJNA914714 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR22846100_1.fastq.gz	Fastqsanger.gz
	SRR22846100_2.fastq.gz	Fastqsanger.gz
	SRR22846101_1.fastq.gz	Fastqsanger.gz
	SRR22846101_2.fastq.gz	Fastqsanger.gz
	SRR22846102_1.fastq.gz	Fastqsanger.gz

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Anti-proliferative effect of selexipag active metabolite MRE-269 on pulmonary arterial smooth muscle cells from patients with chronic thromboembolic pulmonary hypertension

Project description:Chronic thromboembolic pulmonary hypertension (CTEPH) is a group 4 pulmonary hypertension (PH) characterized by non-resolving thromboembolism in the central pulmonary artery and vascular occlusion in the proximal and distal pulmonary artery. Medical therapy is chosen for patients who are ineligible for pulmonary endarterectomy or balloon pulmonary angioplasty or who have symptomatic residual PH after surgery or intervention. Selexipag, an oral prostacyclin receptor agonist and potent vasodilator, was approved for CTEPH in Japan in 2021. To evaluate the pharmacological effect of selexipag on vascular occlusion in CTEPH, we examined how its active metabolite MRE-269 affects platelet-derived growth factor-stimulated pulmonary arterial smooth muscle cells (PASMCs) from CTEPH patients. MRE-269 showed a more potent anti-proliferative effect on PASMCs from CTEPH patients than on those from normal subjects. DNA-binding protein inhibitor genes ID1 and ID3 were found by RNA sequencing and real-time quantitative polymerase chain reaction to be expressed at lower levels in PASMCs from CTEPH patients than in those from normal subjects and were upregulated by MRE-269 treatment. ID1 and ID3 upregulation by MRE-269 was blocked by co-incubation with a prostacyclin receptor antagonist, and ID1 knockdown by small interfering RNA transfection attenuated the anti-proliferative effect of MRE-269. ID signaling may be involved in the anti-proliferative effect of MRE-269 on PASMCs. This is the first study to demonstrate the pharmacological effects on PASMCs from CTEPH patients of a drug approved for the treatment of CTEPH. Both the vasodilatory and the anti-proliferative effect of MRE-269 may contribute to the efficacy of selexipag in CTEPH.

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