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Martinez AN, Tortelote GG, Pascale CL, McCormack IG, Nordham KD, Suder NJ, Couldwell MW, Dumont AS. Single-Cell Transcriptome Analysis of the Circle of Willis in a Mouse Cerebral Aneurysm Model. Stroke 2022; 53:2647-2657. [PMID: 35770669 DOI: 10.1161/strokeaha.122.038776] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND The circle of Willis (CoW) is the most common location for aneurysms to form in humans. Although the major cell types of the intracranial vasculature are well known, the heterogeneity and relative contributions of the different cells in healthy and aneurysmal vessels have not been well characterized. Here, we present the first comprehensive analysis of the lineage heterogeneity and altered transcriptomic profiles of vascular cells from healthy and aneurysmal mouse CoW using single-cell RNA sequencing. METHODS Cerebral aneurysms (CAs) were induced in adult male mice using an elastase model. Single-cell RNA sequencing was then performed on CoW samples obtained from animals that either had aneurysms form or rupture 14 days post-induction. Sham-operated animals served as controls. RESULTS Unbiased clustering analysis of the transcriptional profiles from >3900 CoW cells identified 19 clusters representing ten cell lineages: vascular smooth muscle cells, endothelial cells fibroblasts, pericytes and immune cells (macrophages, T and B lymphocytes, dendritic cells, mast cells, and neutrophils). The 5 vascular smooth muscle cell subpopulations had distinct transcriptional profiles and were classified as proliferative, stress-induced senescent, quiescent, inflammatory-like, or hyperproliferative. The transcriptional signature of the metabolic pathways of ATP generation was found to be downregulated in 2 major vascular smooth muscle cell clusters when CA was induced. Aneurysm induction led to significant expansion of the total macrophage population, and this expansion was further increased with rupture. Both inflammatory and resolution-phase macrophages were identified, and a massive spike of neutrophils was seen with CA rupture. Additionally, the neutrophil-to-lymphocyte ratio (NLR), which originated from CA induction mirrored what happens in humans. CONCLUSIONS Our data identify CA disease-relevant transcriptional signatures of vascular cells in the CoW and is searchable via a web-based R/shiny interface.
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Affiliation(s)
- Alejandra N Martinez
- Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, LA. (A.N.M., C.L.P., I.G.M., K.D.N., N.J.S., M.W.C., A.S.D.)
| | - Giovane G Tortelote
- Department of Pediatrics and The Tulane Hypertension & Renal Center of Excellence, Tulane University School of Medicine, New Orleans, LA. (G.G.T.)
| | - Crissey L Pascale
- Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, LA. (A.N.M., C.L.P., I.G.M., K.D.N., N.J.S., M.W.C., A.S.D.)
| | - Isabella G McCormack
- Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, LA. (A.N.M., C.L.P., I.G.M., K.D.N., N.J.S., M.W.C., A.S.D.)
| | - Kristen D Nordham
- Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, LA. (A.N.M., C.L.P., I.G.M., K.D.N., N.J.S., M.W.C., A.S.D.)
| | - Natalie J Suder
- Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, LA. (A.N.M., C.L.P., I.G.M., K.D.N., N.J.S., M.W.C., A.S.D.)
| | - Mitchell W Couldwell
- Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, LA. (A.N.M., C.L.P., I.G.M., K.D.N., N.J.S., M.W.C., A.S.D.)
| | - Aaron S Dumont
- Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, LA. (A.N.M., C.L.P., I.G.M., K.D.N., N.J.S., M.W.C., A.S.D.)
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Vivas A, Mikhal J, Ong GM, Eigenbrodt A, van der Meer AD, Aquarius R, Geurts BJ, Boogaarts HD. Aneurysm-on-a-Chip: Setting Flow Parameters for Microfluidic Endothelial Cultures Based on Computational Fluid Dynamics Modeling of Intracranial Aneurysms. Brain Sci 2022; 12:603. [PMID: 35624990 PMCID: PMC9139202 DOI: 10.3390/brainsci12050603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 04/20/2022] [Accepted: 04/27/2022] [Indexed: 11/30/2022] Open
Abstract
Intracranial aneurysms are pouch-like extrusions from the vessels at the base of the brain which can rupture and cause a subarachnoid hemorrhage. The pathophysiological mechanism of aneurysm formation is thought to be a consequence of blood flow (hemodynamic) induced changes on the endothelium. In this study, the results of a personalized aneurysm-on-a-chip model using patient-specific flow parameters and patient-specific cells are presented. CT imaging was used to calculate CFD parameters using an immersed boundary method. A microfluidic device either cultured with human umbilical vein endothelial cells (HUVECs) or human induced pluripotent stem cell-derived endothelial cells (hiPSC-EC) was used. Both types of endothelial cells were exposed for 24 h to either 0.03 Pa or 1.5 Pa shear stress, corresponding to regions of low shear and high shear in the computational aneurysm model, respectively. As a control, both cell types were also cultured under static conditions for 24 h as a control. Both HUVEC and hiPSC-EC cultures presented as confluent monolayers with no particular cell alignment in static or low shear conditions. Under high shear conditions HUVEC elongated and aligned in the direction of the flow. HiPSC-EC exhibited reduced cell numbers, monolayer gap formation and cells with aberrant, spread-out morphology. Future research should focus on hiPSC-EC stabilization to allow personalized intracranial aneurysm models.
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Affiliation(s)
- Aisen Vivas
- Applied Stem Cell Technologies, University of Twente, 7522 NB Enschede, The Netherlands; (A.V.); (A.E.); (A.D.v.d.M.)
| | - Julia Mikhal
- Multiscale Modeling and Simulation Group, Department of Applied Mathematics, University of Twente, 7522 NB Enschede, The Netherlands; (J.M.); (G.M.O.); (B.J.G.)
| | - Gabriela M. Ong
- Multiscale Modeling and Simulation Group, Department of Applied Mathematics, University of Twente, 7522 NB Enschede, The Netherlands; (J.M.); (G.M.O.); (B.J.G.)
| | - Anna Eigenbrodt
- Applied Stem Cell Technologies, University of Twente, 7522 NB Enschede, The Netherlands; (A.V.); (A.E.); (A.D.v.d.M.)
| | - Andries D. van der Meer
- Applied Stem Cell Technologies, University of Twente, 7522 NB Enschede, The Netherlands; (A.V.); (A.E.); (A.D.v.d.M.)
| | - Rene Aquarius
- Department of Neurosurgery, Radboud University Medical Center, 6525 XZ Nijmegen, The Netherlands;
| | - Bernard J. Geurts
- Multiscale Modeling and Simulation Group, Department of Applied Mathematics, University of Twente, 7522 NB Enschede, The Netherlands; (J.M.); (G.M.O.); (B.J.G.)
| | - Hieronymus D. Boogaarts
- Department of Neurosurgery, Radboud University Medical Center, 6525 XZ Nijmegen, The Netherlands;
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Scullen T, Mathkour M, Teja N, Dumont AS. Commentary: Aneurysm Wall Enhancement Is Associated With Decreased Intrasaccular IL-10 and Morphological Features of Instability. Neurosurgery 2021; 89:E215-E217. [PMID: 34318890 DOI: 10.1093/neuros/nyab279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Accepted: 06/12/2021] [Indexed: 11/13/2022] Open
Affiliation(s)
- Tyler Scullen
- Department of Neurological Surgery, Tulane Medical Center, New Orleans, Louisiana, USA
| | - Mansour Mathkour
- Department of Neurological Surgery, Tulane Medical Center, New Orleans, Louisiana, USA
| | - Nikhil Teja
- Department of Psychiatry, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA
| | - Aaron S Dumont
- Department of Neurological Surgery, Tulane Medical Center, New Orleans, Louisiana, USA
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Ma Q, Zhang J, Zhang M, Lan H, Yang Q, Li C, Zeng L. MicroRNA-29b targeting of cell division cycle 7-related protein kinase (CDC7) regulated vascular smooth muscle cell (VSMC) proliferation and migration. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:1496. [PMID: 33313241 PMCID: PMC7729318 DOI: 10.21037/atm-20-6856] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Background Proliferation and migration of vascular smooth muscle cells (VSMCs) are vital processes in vascular remodeling and pathology. This study aimed to explore the expression of miR-29b and cell division cycle 7-related protein kinase (CDC7) in patients with cerebral aneurysm (CA) and their effects on the proliferation and mobility of human umbilical artery smooth muscle cells (HUASMCs). Methods RNA levels of miR-29b and CDC7 were evaluated in the CA tissues and adjacent normal cerebral arteries from 18 patients undergoing surgery for CA rupture. The targeting of CDC7 by miR-29b was verified with luciferase reporter assay. Both CDC7 and miR-29b overexpression and silencing vectors were introduced to validate their effects on the proliferation and mobility of HUASMCs. Results The mRNA level of miR-29b was down-regulated (P<0.05), while the mRNA level of CDC7 was markedly elevated in CA patients (P<0.05). A Luciferase reporter assay showed CDC7 is a target gene of miR-29b, and miR-29b mimic down-regulated the mRNA and protein levels of CDC7 (P<0.05). Furthermore, miR-29b mimic inhibited, while miR-29b inhibitor or CDC7 over-expression promoted the proliferation and mobility of HUASMCs (P<0.05). Conclusions miR-29-3p inhibits cell proliferation and mobility via directly targeting CDC7, which could be a potential therapeutic target for vascular dysfunction related diseases, including atherosclerosis and CA.
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Affiliation(s)
- Qunhua Ma
- RICU&MICU, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Jing Zhang
- Emergency Observation Ward, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Ming Zhang
- Cancer Center, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Huan Lan
- Department of Cardiovascular Medicine, Southwest Medical University, Luzhou, China
| | - Qian Yang
- School of Nursing, Chengdu Medical College, Chengdu, China
| | - Chengping Li
- Emergency Observation Ward, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Li Zeng
- Department of Nursing, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
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