1
|
Tang B, Vadgama A, Redmann B, Hong J. Charting the cellular landscape of pulmonary arterial hypertension through single-cell omics. Respir Res 2024; 25:192. [PMID: 38702687 PMCID: PMC11067161 DOI: 10.1186/s12931-024-02823-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Accepted: 04/25/2024] [Indexed: 05/06/2024] Open
Abstract
This review examines how single-cell omics technologies, particularly single-cell RNA sequencing (scRNAseq), enhance our understanding of pulmonary arterial hypertension (PAH). PAH is a multifaceted disorder marked by pulmonary vascular remodeling, leading to high morbidity and mortality. The cellular pathobiology of this heterogeneous disease, involving various vascular and non-vascular cell types, is not fully understood. Traditional PAH studies have struggled to resolve the complexity of pathogenic cell populations. scRNAseq offers a refined perspective by detailing cellular diversity within PAH, identifying unique cell subsets, gene networks, and molecular pathways that drive the disease. We discuss significant findings from recent literature, summarizing how scRNAseq has shifted our understanding of PAH in human, rat, and mouse models. This review highlights the insights gained into cellular phenotypes, gene expression patterns, and novel molecular targets, and contemplates the challenges and prospective paths for research. We propose ways in which single-cell omics could inform future research and translational efforts to combat PAH.
Collapse
Affiliation(s)
- Brian Tang
- Division of Pulmonary and Critical Care Medicine, David Geffen School of Medicine at UCLA, University of California, 200 UCLA Medical Plaza, Suite 365-B, Box 951693, Los Angeles, CA, 90095, USA
| | - Arjun Vadgama
- Division of Pulmonary and Critical Care Medicine, David Geffen School of Medicine at UCLA, University of California, 200 UCLA Medical Plaza, Suite 365-B, Box 951693, Los Angeles, CA, 90095, USA
| | - Bryce Redmann
- Division of Pulmonary and Critical Care Medicine, David Geffen School of Medicine at UCLA, University of California, 200 UCLA Medical Plaza, Suite 365-B, Box 951693, Los Angeles, CA, 90095, USA
| | - Jason Hong
- Division of Pulmonary and Critical Care Medicine, David Geffen School of Medicine at UCLA, University of California, 200 UCLA Medical Plaza, Suite 365-B, Box 951693, Los Angeles, CA, 90095, USA.
| |
Collapse
|
2
|
Balczon R, Lin MT, Voth S, Nelson AR, Schupp JC, Wagener BM, Pittet JF, Stevens T. Lung endothelium, tau, and amyloids in health and disease. Physiol Rev 2024; 104:533-587. [PMID: 37561137 DOI: 10.1152/physrev.00006.2023] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 06/26/2023] [Accepted: 08/04/2023] [Indexed: 08/11/2023] Open
Abstract
Lung endothelia in the arteries, capillaries, and veins are heterogeneous in structure and function. Lung capillaries in particular represent a unique vascular niche, with a thin yet highly restrictive alveolar-capillary barrier that optimizes gas exchange. Capillary endothelium surveys the blood while simultaneously interpreting cues initiated within the alveolus and communicated via immediately adjacent type I and type II epithelial cells, fibroblasts, and pericytes. This cell-cell communication is necessary to coordinate the immune response to lower respiratory tract infection. Recent discoveries identify an important role for the microtubule-associated protein tau that is expressed in lung capillary endothelia in the host-pathogen interaction. This endothelial tau stabilizes microtubules necessary for barrier integrity, yet infection drives production of cytotoxic tau variants that are released into the airways and circulation, where they contribute to end-organ dysfunction. Similarly, beta-amyloid is produced during infection. Beta-amyloid has antimicrobial activity, but during infection it can acquire cytotoxic activity that is deleterious to the host. The production and function of these cytotoxic tau and amyloid variants are the subject of this review. Lung-derived cytotoxic tau and amyloid variants are a recently discovered mechanism of end-organ dysfunction, including neurocognitive dysfunction, during and in the aftermath of infection.
Collapse
Affiliation(s)
- Ron Balczon
- Department of Biochemistry and Molecular Biology, University of South Alabama, Mobile, Alabama, United States
- Center for Lung Biology, University of South Alabama, Mobile, Alabama, United States
| | - Mike T Lin
- Department of Physiology and Cell Biology, University of South Alabama, Mobile, Alabama, United States
- Center for Lung Biology, University of South Alabama, Mobile, Alabama, United States
| | - Sarah Voth
- Department of Cell Biology and Physiology, Edward Via College of Osteopathic Medicine, Monroe, Louisiana, United States
| | - Amy R Nelson
- Department of Physiology and Cell Biology, University of South Alabama, Mobile, Alabama, United States
- Center for Lung Biology, University of South Alabama, Mobile, Alabama, United States
| | - Jonas C Schupp
- Pulmonary and Critical Care Medicine, Department of Internal Medicine, Yale University, New Haven, Connecticut, United States
- Department of Respiratory Medicine, Hannover Medical School, Hannover, Germany
- German Center for Lung Research (DZL), Hannover, Germany
| | - Brant M Wagener
- Department of Anesthesiology and Perioperative Medicine, University of Alabama-Birmingham, Birmingham, Alabama, United States
| | - Jean-Francois Pittet
- Department of Anesthesiology and Perioperative Medicine, University of Alabama-Birmingham, Birmingham, Alabama, United States
| | - Troy Stevens
- Department of Physiology and Cell Biology, University of South Alabama, Mobile, Alabama, United States
- Department of Internal Medicine, University of South Alabama, Mobile, Alabama, United States
- Center for Lung Biology, University of South Alabama, Mobile, Alabama, United States
| |
Collapse
|
3
|
Kim H, Liu Y, Kim J, Kim Y, Klouda T, Fisch S, Baek SH, Liu T, Dahlberg S, Hu CJ, Tian W, Jiang X, Kosmas K, Christou HA, Korman BD, Vargas SO, Wu JC, Stenmark KR, Perez VDJ, Nicolls MR, Raby BA, Yuan K. Pericytes contribute to pulmonary vascular remodeling via HIF2α signaling. EMBO Rep 2024; 25:616-645. [PMID: 38243138 PMCID: PMC10897382 DOI: 10.1038/s44319-023-00054-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 12/07/2023] [Accepted: 12/19/2023] [Indexed: 01/21/2024] Open
Abstract
Vascular remodeling is the process of structural alteration and cell rearrangement of blood vessels in response to injury and is the cause of many of the world's most afflicted cardiovascular conditions, including pulmonary arterial hypertension (PAH). Many studies have focused on the effects of vascular endothelial cells and smooth muscle cells (SMCs) during vascular remodeling, but pericytes, an indispensable cell population residing largely in capillaries, are ignored in this maladaptive process. Here, we report that hypoxia-inducible factor 2α (HIF2α) expression is increased in the lung tissues of PAH patients, and HIF2α overexpressed pericytes result in greater contractility and an impaired endothelial-pericyte interaction. Using single-cell RNAseq and hypoxia-induced pulmonary hypertension (PH) models, we show that HIF2α is a major molecular regulator for the transformation of pericytes into SMC-like cells. Pericyte-selective HIF2α overexpression in mice exacerbates PH and right ventricular hypertrophy. Temporal cellular lineage tracing shows that HIF2α overexpressing reporter NG2+ cells (pericyte-selective) relocate from capillaries to arterioles and co-express SMA. This novel insight into the crucial role of NG2+ pericytes in pulmonary vascular remodeling via HIF2α signaling suggests a potential drug target for PH.
Collapse
Affiliation(s)
- Hyunbum Kim
- Division of Pulmonary Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Yu Liu
- Stanford Cardiovascular Institute; Department of Medicine, Stanford University, Stanford, CA, 94305, USA
| | - Jiwon Kim
- Division of Pulmonary Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Yunhye Kim
- Division of Pulmonary Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Timothy Klouda
- Division of Pulmonary Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Sudeshna Fisch
- Department of Medicine, Brigham and Women Hospital, Boston, MA, USA
| | - Seung Han Baek
- Division of Pulmonary Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Tiffany Liu
- Division of Pulmonary Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Suzanne Dahlberg
- Division of Pulmonary Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Cheng-Jun Hu
- Cardiovascular Pulmonary Research Laboratories, Division of Pulmonary Sciences and Critical Care Medicine, Division of Pediatrics-Critical Care, Departments of Medicine and Pediatrics, University of Colorado, Anschutz Medical Campus, Aurora, CO, USA
| | - Wen Tian
- Division of Pulmonary, Allergy and Critical Care Medicine, Dept of Medicine, Stanford University, Stanford, CA, USA
| | - Xinguo Jiang
- Division of Pulmonary, Allergy and Critical Care Medicine, Dept of Medicine, Stanford University, Stanford, CA, USA
| | - Kosmas Kosmas
- Department of Pediatric Newborn Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Helen A Christou
- Department of Pediatric Newborn Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Benjamin D Korman
- Division of Allergy/Immunology and Rheumatology, Department of Medicine, University of Rochester Medical Center, Rochester, NY, 14623, USA
| | - Sara O Vargas
- Division of Pathology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Joseph C Wu
- Stanford Cardiovascular Institute; Department of Medicine, Stanford University, Stanford, CA, 94305, USA
| | - Kurt R Stenmark
- Cardiovascular Pulmonary Research Laboratories, Division of Pulmonary Sciences and Critical Care Medicine, Division of Pediatrics-Critical Care, Departments of Medicine and Pediatrics, University of Colorado, Anschutz Medical Campus, Aurora, CO, USA
| | - Vinicio de Jesus Perez
- Division of Pulmonary, Allergy and Critical Care Medicine, Dept of Medicine, Stanford University, Stanford, CA, USA
| | - Mark R Nicolls
- Division of Pulmonary, Allergy and Critical Care Medicine, Dept of Medicine, Stanford University, Stanford, CA, USA
| | - Benjamin A Raby
- Division of Pulmonary Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Ke Yuan
- Division of Pulmonary Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA.
| |
Collapse
|
4
|
Li L, Xue Q, Zhang M, Yang Z, Wang D, Yan G, Qiao Y, Tang C, Zhang R. Upregulation of the key biomarker kinesin family member 20A (KIF20A) is associated with pulmonary artery hypertension. Genomics 2023; 115:110705. [PMID: 37703933 DOI: 10.1016/j.ygeno.2023.110705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 08/21/2023] [Accepted: 09/09/2023] [Indexed: 09/15/2023]
Abstract
OBJECTIVE Pulmonary artery hypertension (PAH) is a complex, fatal disease with limited treatments. This study aimed to investigate possible key targets in PAH through bioinformatics. METHODS GSE144274 were obtained from Gene Expression Omnibus (GEO) database. Then, differentially expressed genes (DEGs) between idiopathic pulmonary hypertension (IPAH) and healthy subjects were identified and analyzed. Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG) were analyzed, and a protein-protein interaction (PPI) network was constructed using STRING. The hub genes were identified by MCODE method. The expression levels of hub genes were validated in vitro and in vivo models. Finally, the ROC analysis was performed based on the level of hub genes in clinical plasma samples. RESULTS A total of 363 DEGs were identified. GO analysis on these DEGs were mainly enriched in cell division, inflammatory response, among others. In the KEGG pathways analysis, DEGs mainly involved in cytokine-cytokine receptor interaction, rheumatoid arthritis, and IL-17 signaling pathways were enriched. The DEGs were analyzed with the STRING for PPI network analysis, and 62 hub genes were identified by MCODE. Finally, 6 central genes, KIF18B, SPC25, DLGAP5, KIF20A, CEP55 and ANLN, were screened out due to their novelty role in PAH. The expression of KIF20A was validated to be significantly upregulated both in the lung tissue of hypoxia-induced pulmonary hypertension (HPH) mice and proliferative PASMCs. Additionally, KIF20A levels is evelated in PAH plasma and the area under the curve (AUC) to identify PAH was 0.8591 for KIF20A. CONCLUSION The level of KIF20A elevates during the progression of PAH, which suggestes it could be a potential diagnostic and therapeutic target for the PAH.
Collapse
Affiliation(s)
- Linqing Li
- Zhongda Hospital, Southeast University, Department of Cardiology, China; Linyi People's Hospital, 210009 Nanjing, China
| | - Qi Xue
- Zhongda Hospital, Southeast University, Department of Cardiology, China
| | - Minhao Zhang
- Zhongda Hospital, Southeast University, Department of Cardiology, China
| | - Zhanneng Yang
- Zhongda Hospital, Southeast University, Department of Cardiology, China
| | - Dong Wang
- Zhongda Hospital, Southeast University, Department of Cardiology, China
| | - Gaoliang Yan
- Zhongda Hospital, Southeast University, Department of Cardiology, China
| | - Yong Qiao
- Zhongda Hospital, Southeast University, Department of Cardiology, China
| | - Chengchun Tang
- Zhongda Hospital, Southeast University, Department of Cardiology, China.
| | - Rui Zhang
- Zhongda Hospital, Southeast University, Department of Cardiology, China.
| |
Collapse
|
5
|
Mathew R, Iacobas S, Huang J, Iacobas DA. Metabolic Deregulation in Pulmonary Hypertension. Curr Issues Mol Biol 2023; 45:4850-4874. [PMID: 37367058 DOI: 10.3390/cimb45060309] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 05/26/2023] [Accepted: 05/31/2023] [Indexed: 06/28/2023] Open
Abstract
The high morbidity and mortality rate of pulmonary arterial hypertension (PAH) is partially explained by metabolic deregulation. The present study complements our previous publication in "Genes" by identifying significant increases of the glucose transporter solute carrier family 2 (Slc2a1), beta nerve growth factor (Ngf), and nuclear factor erythroid-derived 2-like 2 (Nfe2l2) in three standard PAH rat models. PAH was induced by subjecting the animals to hypoxia (HO), or by injecting with monocrotaline in either normal (CM) or hypoxic (HM) atmospheric conditions. The Western blot and double immunofluorescent experiments were complemented with novel analyses of previously published transcriptomic datasets of the animal lungs from the perspective of the Genomic Fabric Paradigm. We found substantial remodeling of the citrate cycle, pyruvate metabolism, glycolysis/gluconeogenesis, and fructose and mannose pathways. According to the transcriptomic distance, glycolysis/gluconeogenesis was the most affected functional pathway in all three PAH models. PAH decoupled the coordinated expression of many metabolic genes, and replaced phosphomannomutase 2 (Pmm2) with phosphomannomutase 1 (Pmm1) in the center of the fructose and mannose metabolism. We also found significant regulation of key genes involved in PAH channelopathies. In conclusion, our data show that metabolic dysregulation is a major PAH pathogenic factor.
Collapse
Affiliation(s)
- Rajamma Mathew
- Department of Pediatrics, New York Medical College, Valhalla, NY 10595, USA
- Department of Physiology, New York Medical College, Valhalla, NY 10595, USA
| | - Sanda Iacobas
- Department of Pathology, New York Medical College, Valhalla, NY 10595, USA
| | - Jing Huang
- Department of Pathology and Laboratory Medicine, Rutgers University Biomedical and Health Sciences, New Brunswick, NJ 08901, USA
| | - Dumitru Andrei Iacobas
- Personalized Genomics Laboratory, Texas Undergraduate Medical Academy, Prairie View A&M University, Prairie View, TX 77446, USA
| |
Collapse
|