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Shan J, Megarbane A, Chouchane A, Karthik D, Temanni R, Romero AR, Hua H, Pan C, Chen X, Subramanian M, Saad C, Mbarek H, Mehawej C, Chouery E, Abuaqel SW, Dömling A, Remadi S, Yaghi C, Li P, Chouchane L. Genetic predisposition to porto-sinusoidal vascular disorder: A functional genomic-based, multigenerational family study. Hepatology 2023; 77:501-511. [PMID: 35989577 PMCID: PMC9869943 DOI: 10.1002/hep.32735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 08/11/2022] [Accepted: 08/13/2022] [Indexed: 02/01/2023]
Abstract
BACKGROUND AND AIMS Porto-sinusoidal vascular disorder (PSVD) is a group of liver vascular diseases featuring lesions encompassing the portal venules and sinusoids unaccompanied by cirrhosis, irrespective of the presence/absence of portal hypertension. It can occur secondary to coagulation disorders or insult by toxic agents. However, the cause of PSVD remains unknown in most cases. Hereditary cases of PSVD are exceptionally rare, but they are of particular interest and may unveil genetic alterations and molecular mechanisms associated with the disease. APPROACH AND RESULTS We performed genome sequencing of four patients and two healthy individuals of a large multigenerational Lebanese family with PSVD and identified a heterozygous deleterious variant (c.547C>T, p.R183W) of FCH and double SH3 domains 1 ( FCHSD1 ), an uncharacterized gene, in patients. This variant segregated with the disease, and its pattern of inheritance was suggestive of autosomal dominant with variable expressivity. RNA structural modelling of human FCHSD1 suggests that the C-to-T substitution at position 547, corresponding to FCHSD1R183W , may increase both messenger RNA (mRNA) and protein stability and its interaction with MTOR-associated protein, LST8 homolog, a key protein of the mechanistic target of rapamycin (mTOR pathway). These predictions were substantiated by biochemical analyses, which showed that FCHSD1R183W induced high FCHSD1 mRNA stability, overexpression of FCHSD1 protein, and an increase in mTORC1 activation. This human FCHSD1 variant was introduced into mice through CRISPR/Cas9 genome editing. Nine out of the 15 mice carrying the human FCHSD1R183W variant mimicked the phenotype of human PSVD, including splenomegaly and enlarged portal vein. CONCLUSIONS Aberrant FCHSD1 structure and function leads to mTOR pathway overactivation and may cause PSVD.
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Affiliation(s)
- Jingxuan Shan
- Genetic Intelligence Laboratory , Weill Cornell Medicine-Qatar , Qatar Foundation , Doha , Qatar.,Department of Genetic Medicine , Weill Cornell Medicine , New York , New York , USA
| | - André Megarbane
- Department of Human Genetics , Gilbert and Rose-Marie Chagoury School of Medicine , Lebanese American University , Beirut , Lebanon.,Institut Jérôme Lejeune , CRB BioJeL , Paris , France
| | - Aziz Chouchane
- Faculta di Medicina e Chirurgia , Universita Cattolica del Sacro Cuero , Rome , Italy.,Institute of Pathology , University of Bern , Bern , Switzerland
| | - Deepak Karthik
- Genetic Intelligence Laboratory , Weill Cornell Medicine-Qatar , Qatar Foundation , Doha , Qatar
| | | | - Atilio Reyes Romero
- Drug Design Group, Department of Pharmacy , University of Groningen , Groningen , Netherlands
| | - Huiying Hua
- Department of Pediatrics , Ruijin Hospital , Shanghai Jiao Tong University School of Medicine , Shanghai , P.R. China
| | - Chun Pan
- Department of Pediatrics , Ruijin Hospital , Shanghai Jiao Tong University School of Medicine , Shanghai , P.R. China
| | - Xixi Chen
- Department of Pediatrics , Ruijin Hospital , Shanghai Jiao Tong University School of Medicine , Shanghai , P.R. China
| | - Murugan Subramanian
- Genetic Intelligence Laboratory , Weill Cornell Medicine-Qatar , Qatar Foundation , Doha , Qatar
| | - Chadi Saad
- Genome Programme , Qatar Foundation Research, Development and Innovation , Qatar Foundation , Doha , Qatar
| | - Hamdi Mbarek
- Genome Programme , Qatar Foundation Research, Development and Innovation , Qatar Foundation , Doha , Qatar
| | - Cybel Mehawej
- Department of Human Genetics , Gilbert and Rose-Marie Chagoury School of Medicine , Lebanese American University , Beirut , Lebanon
| | - Eliane Chouery
- Department of Human Genetics , Gilbert and Rose-Marie Chagoury School of Medicine , Lebanese American University , Beirut , Lebanon
| | - Sirin W Abuaqel
- Genetic Intelligence Laboratory , Weill Cornell Medicine-Qatar , Qatar Foundation , Doha , Qatar
| | - Alexander Dömling
- Drug Design Group, Department of Pharmacy , University of Groningen , Groningen , Netherlands
| | | | - Cesar Yaghi
- Department of Gastroenterology , Hotel-Dieu de France Hospital , Faculty of Medicine, Saint Joseph University of Beirut , Beirut , Lebanon
| | - Pu Li
- Department of Pediatrics , Ruijin Hospital , Shanghai Jiao Tong University School of Medicine , Shanghai , P.R. China
| | - Lotfi Chouchane
- Genetic Intelligence Laboratory , Weill Cornell Medicine-Qatar , Qatar Foundation , Doha , Qatar.,Department of Genetic Medicine , Weill Cornell Medicine , New York , New York , USA.,Department of Microbiology and Immunology , Weill Cornell Medicine , New York , New York , USA
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The Neuronal Transcription Factor Creb3l1 Potential Upregulates Ntrk2 in the Hypertensive Microenvironment to Promote Vascular Smooth Muscle Cell-Neuron Interaction and Prevent Neurons from Ferroptosis: A Bioinformatic Research of scRNA-seq Data. DISEASE MARKERS 2022; 2022:8339759. [PMID: 35186168 PMCID: PMC8853773 DOI: 10.1155/2022/8339759] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 12/12/2021] [Accepted: 12/16/2021] [Indexed: 12/14/2022]
Abstract
Background There is still a lack of knowledge regarding the association between hypertension and ferroptosis. A single-cell approach was used to study the changes in neuropeptide expression as they might contribute to the mechanisms leading to ferroptosis in a hypertensive microenvironment. Methods We analyzed 11798 cells from the SHR group and 12589 cells from the WKY group of mouse arterial cells. CellPhoneDB was used for cell communication analysis, and the SCENIC method was used to identify key transcription factors in neurons. The correlation between Ntrk2 and ferroptosis-related genes was further analyzed and validated via quantitative polymerase chain reaction. Results The arterial cells were clustered into six cell types. Ligand-receptor analysis suggested that Ngf, Ntf3, Cxcr4, and Ntrk2 were key neuropeptide-related genes involved in the communication between vascular smooth muscle cells and neural cells. In the hypertensive microenvironment, the neuronal transcription factor Creb3l1 appears to play a key role in the upregulation of Ntrk2 to promote the interaction between neurons and vascular smooth muscle cells. An association between Ntrk2 and the ferroptosis death inhibitor Gpx4 was suggested. RT-qPCR experiments confirmed that Ntrk2 downregulation in neural cells was followed by downregulated expression of Gpx4. Conclusions Creb3l1, a key transcription factor in vascular neurons, may upregulate Ntrk2 to promote vascular smooth muscle cell-neuron interaction and thereby potentially prevent ferroptosis in neurons.
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