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Koh H, Kang W, Mao YY, Park J, Kim S, Hong SH, Lee JH. Employment of diverse in vitro systems for analyzing multiple aspects of disease, hereditary hemorrhagic telangiectasia (HHT). Cell Biosci 2024; 14:65. [PMID: 38778363 PMCID: PMC11110195 DOI: 10.1186/s13578-024-01247-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2024] [Accepted: 05/14/2024] [Indexed: 05/25/2024] Open
Abstract
BACKGROUND In vitro disease modeling enables translational research by providing insight into disease pathophysiology and molecular mechanisms, leading to the development of novel therapeutics. Nevertheless, in vitro systems have limitations for recapitulating the complexity of tissues, and a single model system is insufficient to gain a comprehensive understanding of a disease. RESULTS Here we explored the potential of using several models in combination to provide mechanistic insight into hereditary hemorrhagic telangiectasia (HHT), a genetic vascular disorder. Genome editing was performed to establish hPSCs (H9) with ENG haploinsufficiency and several in vitro models were used to recapitulate the functional aspects of the cells that constitute blood vessels. In a 2D culture system, endothelial cells showed early senescence, reduced viability, and heightened susceptibility to apoptotic insults, and smooth muscle cells (SMCs) exhibited similar behavior to their wild-type counterparts. Features of HHT were evident in 3D blood-vessel organoid systems, including thickening of capillary structures, decreased interaction between ECs and surrounding SMCs, and reduced cell viability. Features of ENG haploinsufficiency were observed in arterial and venous EC subtypes, with arterial ECs showing significant impairments. Molecular biological approaches confirmed the significant downregulation of Notch signaling in HHT-ECs. CONCLUSIONS Overall, we demonstrated refined research strategies to enhance our comprehension of HHT, providing valuable insights for pathogenic analysis and the exploration of innovative therapeutic interventions. Additionally, these results underscore the importance of employing diverse in vitro systems to assess multiple aspects of disease, which is challenging using a single in vitro system.
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Affiliation(s)
- Hyebin Koh
- Futuristic Animal Resource & Research Center (FARRC), Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju, Republic of Korea
- Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, Republic of Korea
| | - Woojoo Kang
- National Primate Research Center (NPRC), Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju, Republic of Korea
- Department of Internal Medicine, School of Medicine, Kangwon National University, Chuncheon, Republic of Korea
| | - Ying-Ying Mao
- National Primate Research Center (NPRC), Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju, Republic of Korea
- Department of Animal Science and Biotechnology, College of Agriculture and Life Science, Chungnam National University, Daejeon, Republic of Korea
| | - Jisoo Park
- National Primate Research Center (NPRC), Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju, Republic of Korea
- Department of Biological Sciences and Biotechnology, Chungbuk National University, Cheongju, Republic of Korea
| | - Sangjune Kim
- Department of Biological Sciences and Biotechnology, Chungbuk National University, Cheongju, Republic of Korea
| | - Seok-Ho Hong
- Department of Internal Medicine, School of Medicine, Kangwon National University, Chuncheon, Republic of Korea.
- KW-Bio Co., Ltd, Chuncheon, South Korea.
| | - Jong-Hee Lee
- Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, Republic of Korea.
- National Primate Research Center (NPRC), Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju, Republic of Korea.
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Wan T, Rousseau H, Mattern C, Tabor M, Hodges MR, Ramchandran R, Spearman AD. Glenn circulation causes early and progressive shunting in a surgical model of pulmonary arteriovenous malformations. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.03.588015. [PMID: 38617317 PMCID: PMC11014550 DOI: 10.1101/2024.04.03.588015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
Background Pulmonary arteriovenous malformations (PAVMs) universally develop in patients with single ventricle congenital heart disease (CHD). Single ventricle PAVMs have been recognized for over 50 years, yet they are poorly understood, and we lack any medical therapies. To improve our understanding of single ventricle PAVM initiation and progression, we developed a surgical rat model of Glenn circulation and characterized PAVM physiology over multiple time points. Methods Using adult rats, we performed a left thoracotomy and end-to-end anastomosis of the left superior vena cava to the left pulmonary artery (unilateral Glenn), or sham surgical control. To assess for PAVM physiology in the left lung, we quantified intrapulmonary shunting using two independent methods (bubble echocardiography and fluorescent microsphere injection) at 2 weeks, 2 months, and 6 months. Additionally, we performed arterial blood gas measurements to assess oxygenation and plethysmography to assess ventilation. Results We identified pathologic intrapulmonary shunting by bubble echocardiography as early as 2 weeks post-Glenn surgery, and shunting continued chronically at 2- and 6-months post-Glenn. Shunting also progressed over time, demonstrated by increased shunting of 10µm microspheres at 6 months. Shunting was accompanied by mildly decreased arterial oxygenation, but there were no differences in ventilation as quantified by plethysmography. Conclusions Our surgical animal model of unilateral Glenn circulation re-creates the clinical condition of single ventricle PAVMs with early and progressive intrapulmonary shunting. This model is poised to characterize single ventricle PAVM pathophysiology and lead to mechanistic and therapeutic discovery. Graphic Abstract
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Eisa-Beygi S, Burrows PE, Link BA. Endothelial cilia dysfunction in pathogenesis of hereditary hemorrhagic telangiectasia. Front Cell Dev Biol 2022; 10:1037453. [PMID: 36438574 PMCID: PMC9686338 DOI: 10.3389/fcell.2022.1037453] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 10/21/2022] [Indexed: 09/09/2023] Open
Abstract
Hereditary hemorrhagic telangiectasia (HHT) is associated with defective capillary network, leading to dilated superficial vessels and arteriovenous malformations (AVMs) in which arteries connect directly to the veins. Loss or haploinsufficiency of components of TGF-β signaling, ALK1, ENG, SMAD4, and BMP9, have been implicated in the pathogenesis AVMs. Emerging evidence suggests that the inability of endothelial cells to detect, transduce and respond to blood flow, during early development, is an underpinning of AVM pathogenesis. Therefore, components of endothelial flow detection may be instrumental in potentiating TGF-β signaling in perfused blood vessels. Here, we argue that endothelial cilium, a microtubule-based and flow-sensitive organelle, serves as a signaling hub by coupling early flow detection with potentiation of the canonical TGF-β signaling in nascent endothelial cells. Emerging evidence from animal models suggest a role for primary cilia in mediating vascular development. We reason, on recent observations, that endothelial cilia are crucial for vascular development and that embryonic loss of endothelial cilia will curtail TGF-β signaling, leading to associated defects in arteriovenous development and impaired vascular stability. Loss or dysfunction of endothelial primary cilia may be implicated in the genesis of AVMs due, in part, to inhibition of ALK1/SMAD4 signaling. We speculate that AVMs constitute part of the increasing spectrum of ciliopathy-associated vascular defects.
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Affiliation(s)
- Shahram Eisa-Beygi
- Department of Cell Biology, Neurobiology, and Anatomy, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Patricia E. Burrows
- Department of Radiology, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Brian A. Link
- Department of Cell Biology, Neurobiology, and Anatomy, Medical College of Wisconsin, Milwaukee, WI, United States
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Pulmonary Vascular Sequelae of Palliated Single Ventricle Circulation: Arteriovenous Malformations and Aortopulmonary Collaterals. J Cardiovasc Dev Dis 2022; 9:jcdd9090309. [PMID: 36135454 PMCID: PMC9501802 DOI: 10.3390/jcdd9090309] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 09/12/2022] [Accepted: 09/14/2022] [Indexed: 11/16/2022] Open
Abstract
Children and adults with single ventricle congenital heart disease (CHD) develop many sequelae during staged surgical palliation. Universal pulmonary vascular sequelae in this patient population include two inter-related but distinct complications: pulmonary arteriovenous malformations (PAVMs) and aortopulmonary collaterals (APCs). This review highlights what is known and unknown about these vascular sequelae focusing on diagnostic testing, pathophysiology, and areas in need of further research.
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Orlich MM, Diéguez-Hurtado R, Muehlfriedel R, Sothilingam V, Wolburg H, Oender CE, Woelffing P, Betsholtz C, Gaengel K, Seeliger M, Adams RH, Nordheim A. Mural Cell SRF Controls Pericyte Migration, Vessel Patterning and Blood Flow. Circ Res 2022; 131:308-327. [PMID: 35862101 PMCID: PMC9348820 DOI: 10.1161/circresaha.122.321109] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Pericytes and vascular smooth muscle cells, collectively known as mural cells, are recruited through PDGFB (platelet-derived growth factor B)-PDGFRB (platelet-derived growth factor receptor beta) signaling. MCs are essential for vascular integrity, and their loss has been associated with numerous diseases. Most of this knowledge is based on studies in which MCs are insufficiently recruited or fully absent upon inducible ablation. In contrast, little is known about the physiological consequences that result from impairment of specific MC functions. Here, we characterize the role of the transcription factor SRF (serum response factor) in MCs and study its function in developmental and pathological contexts.
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Affiliation(s)
- Michael M. Orlich
- Department of Molecular Biology, Interfaculty Institute for Cell Biology, University of Tuebingen, Germany (M.M.O., C.E.O., P.W., A.N.)
- International Max Planck Research School (IMPRS) “From Molecules to Organisms,” Tuebingen, Germany (M.M.O., A.N.)
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Sweden (M.M.O., C.B., K.G.)
- Now with Rudbeck Laboratory C11, Dag Hammarskjölds Väg 20, 751 85 Uppsala, Sweden (M.M.O.)
| | - Rodrigo Diéguez-Hurtado
- Department of Tissue Morphogenesis, Max Planck Institute for Molecular Biomedicine, Muenster, Germany (R.D.-H., R.H.A.)
- Faculty of Medicine, University of Muenster, Muenster, Germany (R.D.-H., R.H.A.)
| | - Regine Muehlfriedel
- Institute for Ophthalmic Research, Centre for Ophthalmology, University Clinic Tuebingen (UKT), Germany. (R.M., V.S., M.S.)
| | - Vithiyanjali Sothilingam
- Institute for Ophthalmic Research, Centre for Ophthalmology, University Clinic Tuebingen (UKT), Germany. (R.M., V.S., M.S.)
| | - Hartwig Wolburg
- Department of General Pathology and Pathological Anatomy, Institute of Pathology and Neuropathology, University Clinic Tuebingen (UKT), Germany. (H.W.)
| | - Cansu Ebru Oender
- Department of Molecular Biology, Interfaculty Institute for Cell Biology, University of Tuebingen, Germany (M.M.O., C.E.O., P.W., A.N.)
| | - Pascal Woelffing
- Department of Molecular Biology, Interfaculty Institute for Cell Biology, University of Tuebingen, Germany (M.M.O., C.E.O., P.W., A.N.)
| | - Christer Betsholtz
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Sweden (M.M.O., C.B., K.G.)
| | - Konstantin Gaengel
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Sweden (M.M.O., C.B., K.G.)
| | - Mathias Seeliger
- Institute for Ophthalmic Research, Centre for Ophthalmology, University Clinic Tuebingen (UKT), Germany. (R.M., V.S., M.S.)
| | - Ralf H. Adams
- Department of Tissue Morphogenesis, Max Planck Institute for Molecular Biomedicine, Muenster, Germany (R.D.-H., R.H.A.)
- Faculty of Medicine, University of Muenster, Muenster, Germany (R.D.-H., R.H.A.)
| | - Alfred Nordheim
- Department of Molecular Biology, Interfaculty Institute for Cell Biology, University of Tuebingen, Germany (M.M.O., C.E.O., P.W., A.N.)
- International Max Planck Research School (IMPRS) “From Molecules to Organisms,” Tuebingen, Germany (M.M.O., A.N.)
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Neurovascular Manifestations in Pediatric Patients With Hereditary Haemorrhagic Telangiectasia. Pediatr Neurol 2022; 129:24-30. [PMID: 35176532 DOI: 10.1016/j.pediatrneurol.2021.12.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 12/06/2021] [Accepted: 12/09/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Hereditary hemorrhagic telangiectasia (HHT) is a multiorgan vascular dysplasia with limited data regarding its neurovascular manifestations and genotype-phenotype correlation in children. The objective of this study was to describe the neurovascular findings in a large cohort of children with HHT and correlate between phenotype and genotype. METHODS This retrospective study was conducted on 221 children (<18 years) with a definite or possible diagnosis of HHT based on Curacao criteria, or with positive genetics for the mutated genes of ENG, ACVRL-1, and SMAD-4, who also underwent brain MRI and/or conventional angiography. Demographic and clinical information, imaging findings, and follow up information were gathered. RESULTS Two hundred twenty-one children with HHT (70.6% genetically confirmed, and 99.5% positive family history) were included, with a median age of 7 years (interquartile range: 3 to 11 years) and 58.8% male predominance. Neurovascular lesions were found in 64 of 221 (28.9%), with 3.1% prevalence of intracranial hemorrhage. The most commonly observed vascular malformations were developmental venous anomalies (48.5%) and brain arteriovenous malformations (AVMs) (31.2%), followed by capillary malformations (14.1%). Multiple AVMs were seen in 10.0% of the cohort. We found no instances of de novo AVM (1281.8 patient-years).A significantly higher proportion of patients with ENG mutations (19.7%) had brain AVM than those with ACVRL-1 (4.9%) and SMAD-4 (0%) mutations (P < 0.01). There was no significant difference in the hemorrhagic risk of shunting lesions associated with ENG (35.3%) or ACVRL-1 (33.3%) positivity (P = 0.9). CONCLUSIONS We describe the neurovascular imaging and genetic findings from a large pediatric cohort of HHT, to enhance clinical awareness and guide management of patients with HHT.
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Mahendra Y, He M, Rouf MA, Tjakra M, Fan L, Wang Y, Wang G. Progress and prospects of mechanotransducers in shear stress-sensitive signaling pathways in association with arteriovenous malformation. Clin Biomech (Bristol, Avon) 2021; 88:105417. [PMID: 34246943 DOI: 10.1016/j.clinbiomech.2021.105417] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 06/21/2021] [Accepted: 06/21/2021] [Indexed: 02/07/2023]
Abstract
Arteriovenous malformations are congenital vascular lesions characterized by a direct and tangled connection between arteries and veins, which disrupts oxygen circulation and normal blood flow. Arteriovenous malformations often occur in the patient with hereditary hemorrhagic telangiectasia. The attempts to elucidate the causative factors and pathogenic mechanisms of arteriovenous malformations are now still in progress. Some studies reported that shear stress in blood flow is one of the factors involved in arteriovenous malformations manifestation. Through several mechanotransducers harboring the endothelial cells membrane, the signal from shear stress is transduced towards the responsible signaling pathways in endothelial cells to maintain cell homeostasis. Any disruption in this well-established communication will give rise to abnormal endothelial cells differentiation and specification, which will later promote arteriovenous malformations. In this review, we discuss the update of several mechanotransducers that have essential roles in shear stress-induced signaling pathways, such as activin receptor-like kinase 1, Endoglin, Notch, vascular endothelial growth factor receptor 2, Caveolin-1, Connexin37, and Connexin40. Any disruption of these signaling potentially causes arteriovenous malformations. We also present some recent insights into the fundamental analysis, which attempts to determine potential and alternative solutions to battle arteriovenous malformations, especially in a less invasive and risky way, such as gene treatments.
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Affiliation(s)
- Yoga Mahendra
- Key Laboratory for Biorheological Science and Technology of Ministry of Education State and Local Joint Engineering Laboratory for Vascular Implants Bioengineering College of Chongqing University, Chongqing 400030, China
| | - Mei He
- Chongqing University Cancer Hospital, Chongqing Cancer Institute, Chongqing Cancer Hospital, Chongqing, China
| | - Muhammad Abdul Rouf
- Key Laboratory for Biorheological Science and Technology of Ministry of Education State and Local Joint Engineering Laboratory for Vascular Implants Bioengineering College of Chongqing University, Chongqing 400030, China
| | - Marco Tjakra
- Key Laboratory for Biorheological Science and Technology of Ministry of Education State and Local Joint Engineering Laboratory for Vascular Implants Bioengineering College of Chongqing University, Chongqing 400030, China
| | - Longling Fan
- Key Laboratory for Biorheological Science and Technology of Ministry of Education State and Local Joint Engineering Laboratory for Vascular Implants Bioengineering College of Chongqing University, Chongqing 400030, China
| | - Yeqi Wang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education State and Local Joint Engineering Laboratory for Vascular Implants Bioengineering College of Chongqing University, Chongqing 400030, China.
| | - Guixue Wang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education State and Local Joint Engineering Laboratory for Vascular Implants Bioengineering College of Chongqing University, Chongqing 400030, China.
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The BMP Pathway in Blood Vessel and Lymphatic Vessel Biology. Int J Mol Sci 2021; 22:ijms22126364. [PMID: 34198654 PMCID: PMC8232321 DOI: 10.3390/ijms22126364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 05/31/2021] [Accepted: 06/01/2021] [Indexed: 11/16/2022] Open
Abstract
Bone morphogenetic proteins (BMPs) were originally identified as the active components in bone extracts that can induce ectopic bone formation. In recent decades, their key role has broadly expanded beyond bone physiology and pathology. Nowadays, the BMP pathway is considered an important player in vascular signaling. Indeed, mutations in genes encoding different components of the BMP pathway cause various severe vascular diseases. Their signaling contributes to the morphological, functional and molecular heterogeneity among endothelial cells in different vessel types such as arteries, veins, lymphatic vessels and capillaries within different organs. The BMP pathway is a remarkably fine-tuned pathway. As a result, its signaling output in the vessel wall critically depends on the cellular context, which includes flow hemodynamics, interplay with other vascular signaling cascades and the interaction of endothelial cells with peri-endothelial cells and the surrounding matrix. In this review, the emerging role of BMP signaling in lymphatic vessel biology will be highlighted within the framework of BMP signaling in the circulatory vasculature.
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Healy V, O'Halloran PJ, Husien MB, Bolger C, Farrell M. Intermixed arteriovenous malformation and hemangioblastoma: case report and literature review. CNS Oncol 2020; 9:CNS66. [PMID: 33244995 PMCID: PMC7737198 DOI: 10.2217/cns-2020-0021] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Accepted: 10/27/2020] [Indexed: 12/14/2022] Open
Abstract
We report the third presentation of an intermixed arteriovenous malformation and hemangioblastoma. The rare occurrence of the diagnostic histologic features of both a neoplasm and vascular malformation in a single lesion is more common in gliomas, as angioglioma, and is termed an 'intermixed' lesion. We review the literature concerning the developmental biology of each lesion, and potential interplay in the formation of an intermixed vascular neoplasm and vascular malformation. The roles of cellular origin, genetic susceptibility, favourable microenvironment, altered local gene expression and key regulatory pathways are reviewed. Our review supports angiography and genetic profiling in intermixed lesions to inform management strategies. Consideration should be given to multimodality therapeutic interventions as required, including microsurgical resection, stereotactic radiosurgery and further research to exploit emerging molecular targets.
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Affiliation(s)
- Vincent Healy
- Department of Neurosurgery, Beaumont Hospital, Dublin, Ireland
- Department of Neuroscience, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Philip J O'Halloran
- Department of Neurosurgery, Beaumont Hospital, Dublin, Ireland
- Department of Neuroscience, Royal College of Surgeons in Ireland, Dublin, Ireland
| | | | - Ciaran Bolger
- Department of Neurosurgery, Beaumont Hospital, Dublin, Ireland
- Department of Neuroscience, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Michael Farrell
- Department of Neurosurgery, Beaumont Hospital, Dublin, Ireland
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Potential Second-Hits in Hereditary Hemorrhagic Telangiectasia. J Clin Med 2020; 9:jcm9113571. [PMID: 33167572 PMCID: PMC7694477 DOI: 10.3390/jcm9113571] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 10/29/2020] [Accepted: 11/02/2020] [Indexed: 12/13/2022] Open
Abstract
Hereditary hemorrhagic telangiectasia (HHT) is an autosomal dominant genetic disorder that presents with telangiectases in skin and mucosae, and arteriovenous malformations (AVMs) in internal organs such as lungs, liver, and brain. Mutations in ENG (endoglin), ACVRL1 (ALK1), and MADH4 (Smad4) genes account for over 95% of HHT. Localized telangiectases and AVMs are present in different organs, with frequencies which differ among affected individuals. By itself, HHT gene heterozygosity does not account for the focal nature and varying presentation of the vascular lesions leading to the hypothesis of a “second-hit” that triggers the lesions. Accumulating research has identified a variety of triggers that may synergize with HHT gene heterozygosity to generate the vascular lesions. Among the postulated second-hits are: mechanical trauma, light, inflammation, vascular injury, angiogenic stimuli, shear stress, modifier genes, and somatic mutations in the wildtype HHT gene allele. The aim of this review is to summarize these triggers, as well as the functional mechanisms involved.
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Fonseca CG, Barbacena P, Franco CA. Endothelial cells on the move: dynamics in vascular morphogenesis and disease. VASCULAR BIOLOGY 2020; 2:H29-H43. [PMID: 32935077 PMCID: PMC7487603 DOI: 10.1530/vb-20-0007] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 07/02/2020] [Indexed: 12/11/2022]
Abstract
The vascular system is a hierarchically organized network of blood vessels that play crucial roles in embryogenesis, homeostasis and disease. Blood vessels are built by endothelial cells – the cells lining the interior of blood vessels – through a process named vascular morphogenesis. Endothelial cells react to different biomechanical signals in their environment by adjusting their behavior to: (1) invade, proliferate and fuse to form new vessels (angiogenesis); (2) remodel, regress and establish a hierarchy in the network (patterning); and (3) maintain network stability (quiescence). Each step involves the coordination of endothelial cell differentiation, proliferation, polarity, migration, rearrangements and shape changes to ensure network integrity and an efficient barrier between blood and tissues. In this review, we highlighted the relevance and the mechanisms involving endothelial cell migration during different steps of vascular morphogenesis. We further present evidence on how impaired endothelial cell dynamics can contribute to pathology.
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Affiliation(s)
- Catarina G Fonseca
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal.,Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
| | - Pedro Barbacena
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | - Claudio A Franco
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal.,Instituto de Histologia e Biologia do Desenvolvimento, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
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Shoemaker LD, McCormick AK, Allen BM, Chang SD. Evidence for endothelial-to-mesenchymal transition in human brain arteriovenous malformations. Clin Transl Med 2020; 10:e99. [PMID: 32564509 PMCID: PMC7403663 DOI: 10.1002/ctm2.99] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 05/25/2020] [Accepted: 05/25/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Brain arteriovenous malformations (AVMs) are rare, potentially devastating cerebrovascular lesions that can occur in both children and adults. AVMs are largely sporadic and the basic disease biology remains unclear, limiting advances in both detection and treatment. This study aimed to investigate human brain AVMs for endothelial-to-mesenchymal transition (EndMT), a process recently implicated in cerebral cavernous malformations (CCMs). METHODS We used 29 paraffin-embedded and 13 fresh/frozen human brain AVM samples to profile expression of panels of EndMT-associated proteins and RNAs. CCMs, a cerebrovascular disease also characterized by abnormal vasculature, were used as a primary comparison, given that EndMT specifically contributes to CCM disease biology. AVM-derived cell lines were isolated from three fresh, surgical AVM samples and characterized by protein expression. RESULTS We observed high collagen deposition, high PAI-1 expression, and expression of EndMT-associated transcription factors such as KLF4, SNAI1, and SNAI2 and mesenchymal-associated markers such as VIM, ACTA2, and S100A4. SMAD-dependent TGF-β signaling was not strongly activated in AVMs and this pathway may be only partially involved in mediating EndMT. Using serum-free culture conditions, we isolated myofibroblast-like cell populations from AVMs that expressed a unique range of proteins associated with mature cell types and with EndMT. Conditioned medium from these cells led to increased proliferation of HUVECs and SMCs. CONCLUSIONS Collectively, our results suggest a role for EndMT in AVM disease. This may lead to new avenues for disease models to further our understanding of disease mechanisms, and to the development of improved diagnostics and therapeutics.
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Affiliation(s)
- Lorelei D. Shoemaker
- Stanford Neuromolecular Innovation ProgramDepartment of NeurosurgeryStanford UniversityStanfordCalifornia
| | - Aaron K. McCormick
- Stanford Neuromolecular Innovation ProgramDepartment of NeurosurgeryStanford UniversityStanfordCalifornia
| | - Breanna M. Allen
- Department of Microbiology & ImmunologyUniversity of CaliforniaSan FranciscoCalifornia
| | - Steven D. Chang
- Stanford Neuromolecular Innovation ProgramDepartment of NeurosurgeryStanford UniversityStanfordCalifornia
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Peacock HM, Tabibian A, Criem N, Caolo V, Hamard L, Deryckere A, Haefliger JA, Kwak BR, Zwijsen A, Jones EAV. Impaired SMAD1/5 Mechanotransduction and Cx37 (Connexin37) Expression Enable Pathological Vessel Enlargement and Shunting. Arterioscler Thromb Vasc Biol 2020; 40:e87-e104. [PMID: 32078368 DOI: 10.1161/atvbaha.119.313122] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
OBJECTIVE Impaired ALK1 (activin receptor-like kinase-1)/Endoglin/BMP9 (bone morphogenetic protein 9) signaling predisposes to arteriovenous malformations (AVMs). Activation of SMAD1/5 signaling can be enhanced by shear stress. In the genetic disease hereditary hemorrhagic telangiectasia, which is characterized by arteriovenous malformations, the affected receptors are those involved in the activation of mechanosensitive SMAD1/5 signaling. To elucidate how genetic and mechanical signals interact in AVM development, we sought to identify targets differentially regulated by BMP9 and shear stress. Approach and Results: We identify Cx37 (Connexin37) as a differentially regulated target of ligand-induced and mechanotransduced SMAD1/5 signaling. We show that stimulation of endothelial cells with BMP9 upregulated Cx37, whereas shear stress inhibited this expression. This signaling was SMAD1/5-dependent, and in the absence of SMAD1/5, there was an inversion of the expression pattern. Ablated SMAD1/5 signaling alone caused AVM-like vascular malformations directly connecting the dorsal aorta to the inlet of the heart. In yolk sacs of mouse embryos with an endothelial-specific compound heterozygosity for SMAD1/5, addition of TNFα (tumor necrosis factor-α), which downregulates Cx37, induced development of these direct connections bypassing the yolk sac capillary bed. In wild-type embryos undergoing vascular remodeling, Cx37 was globally expressed by endothelial cells but was absent in regions of enlarging vessels. TNFα and endothelial-specific compound heterozygosity for SMAD1/5 caused ectopic regions lacking Cx37 expression, which correlated to areas of vascular malformations. Mechanistically, loss of Cx37 impairs correct directional migration under flow conditions. CONCLUSIONS Our data demonstrate that Cx37 expression is differentially regulated by shear stress and SMAD1/5 signaling, and that reduced Cx37 expression is permissive for capillary enlargement into shunts.
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Affiliation(s)
- Hanna M Peacock
- From the Department of Cardiovascular Sciences, Centre for Molecular and Vascular Biology (H.M.P., A.T., N.C., A.Z., E.A.V.J.), KU Leuven, Belgium
| | - Ashkan Tabibian
- From the Department of Cardiovascular Sciences, Centre for Molecular and Vascular Biology (H.M.P., A.T., N.C., A.Z., E.A.V.J.), KU Leuven, Belgium
| | - Nathan Criem
- From the Department of Cardiovascular Sciences, Centre for Molecular and Vascular Biology (H.M.P., A.T., N.C., A.Z., E.A.V.J.), KU Leuven, Belgium
| | - Vincenza Caolo
- Leeds Institute of Cardiovascular and Metabolic Medicine, School of Medicine, University of Leeds, United Kingdom (V.C.)
| | - Lauriane Hamard
- Department of Medicine, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Switzerland (L.H., J.-A.H.)
| | | | - Jacques-Antoine Haefliger
- Department of Medicine, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Switzerland (L.H., J.-A.H.)
| | - Brenda R Kwak
- Department of Pathology and Immunology, University of Geneva, Switzerland (B.R.K.)
| | - An Zwijsen
- From the Department of Cardiovascular Sciences, Centre for Molecular and Vascular Biology (H.M.P., A.T., N.C., A.Z., E.A.V.J.), KU Leuven, Belgium
| | - Elizabeth A V Jones
- From the Department of Cardiovascular Sciences, Centre for Molecular and Vascular Biology (H.M.P., A.T., N.C., A.Z., E.A.V.J.), KU Leuven, Belgium
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Castillo E, Prada-Arismendy J. Bevacizumab as a treatment option in gastrointestinal bleeding associated to hereditary hemorrhagic telangiectasia. Case Report. REVISTA DE LA FACULTAD DE MEDICINA 2019. [DOI: 10.15446/revfacmed.v67n3.68417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Introduction: Hereditary Hemorrhagic Telangiectasia (HHT) is an autosomal dominant genetic disease characterized by the presence of arteriovenous malformations in the nasal mucosa, the tips of fingers, and sometimes in the lungs, the gastrointestinal tract, the liver, the pancreas, the marrow and the brain. Its treatment is based on symptomatic control measures, but recently, the administration of anti-vascular endothelial growth factor (VEGF) molecules has been proposed as a treatment alternative, especially in patients with recurrent bleeding.Case presentation: The case of a 67-year-old man diagnosed with HHT and suffering from potentially life-threatening gastrointestinal GI bleeding is presented. The patient underwent several esophagogastric cauterization procedures but not positive outcomes were obtained, so he had to go to the Emergency Service of the hospital multiple times due to having low levels of hemoglobin (as low as 3.5g/dl). A bevacizumab based treatment was started by using a novel dosage regimen consisting of the administration of 6 5mg/kg bevacizumab dosages every 14 days. During the first week of treatment, hemoglobin levels increased to 14g/dl and the condition was stabilized.Conclusions: The findings reported here suggest that bevacizumab may be a therapeutic choice to be considered when treating patients with recurrent and refractory GI bleeding caused by HHT. However, a larger sample is required to determine if administering this medication is safe for these patients, as well as the appropriate dosage.
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15
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Yu H, Shin SM, Wang F, Xu H, Xiang H, Cai Y, Itson-Zoske B, Hogan QH. Transmembrane protein 100 is expressed in neurons and glia of dorsal root ganglia and is reduced after painful nerve injury. Pain Rep 2018; 4:e703. [PMID: 30801043 PMCID: PMC6370145 DOI: 10.1097/pr9.0000000000000703] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 10/08/2018] [Accepted: 10/30/2018] [Indexed: 12/16/2022] Open
Abstract
Introduction Tmem100 modulates interactions between TRPA1 and TRPV1. The cell specificity of Tmem100 expression in dorsal root ganglia (DRGs) is not well defined, nor is the effect of peripheral nerve injury on Tmem100 expression. Objective This study was designed to determine the cell specificity of Tmem100 expression in DRG and its subcellular localization, and to examine how Tmem100 expression may be altered in painful conditions. Methods Dorsal root ganglion Tmem100 expression was determined by immunohistochemistry, immunoblot, and quantitative real-time PCR, and compared between various experimental rat pain models and controls. Results Tmem100 is expressed in both neurons and perineuronal glial cells in the rat DRG. The plasma membrane and intracellular localization of Tmem100 are identified in 83% ± 6% of IB4-positive and 48% ± 6% of calcitonin gene-related peptide-positive neurons, as well as in medium- and large-sized neurons, with its immunopositivity colocalized to TRPV1 (94% ± 5%) and TRPA1 (96% ± 3%). Tmem100 is also detected in the perineuronal satellite glial cells and in some microglia. Tmem100 protein is significantly increased in the lumbar DRGs in the complete Freund adjuvant inflammatory pain. By contrast, peripheral nerve injury by spinal nerve ligation diminishes Tmem100 expression in the injured DRG, with immunoblot and immunohistochemistry experiments showing reduced Tmem100 protein levels in both neurons and satellite glial cells of DRGs proximal to injury, whereas Tmem100 is unchanged in adjacent DRGs. The spared nerve injury model also reduces Tmem100 protein in the injured DRGs. Conclusion Our data demonstrate a pain pathology-dependent alteration of DRG Tmem100 protein expression, upregulated during CFA inflammatory pain but downregulated during neuropathic pain.
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Affiliation(s)
- Hongwei Yu
- Department of Anesthesiology, Medical College of Wisconsin, Milwaukee, WI, USA.,Zablocki Veterans Affairs Medical Center, Milwaukee, WI, USA
| | - Seung Min Shin
- Department of Anesthesiology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Fei Wang
- Department of Anesthesiology, Medical College of Wisconsin, Milwaukee, WI, USA.,Medical Experiment Center, Shaanxi University of Chinese Medicine, Xianyang, Shaanxi, PR of China
| | - Hao Xu
- Department of Anesthesiology, Medical College of Wisconsin, Milwaukee, WI, USA.,Department of Orthopedic Surgery, Affiliated Hospital of Qingdao University, Qingdao, PR of China
| | - Hongfei Xiang
- Department of Anesthesiology, Medical College of Wisconsin, Milwaukee, WI, USA.,Department of Orthopedic Surgery, Affiliated Hospital of Qingdao University, Qingdao, PR of China
| | - Yongsong Cai
- Department of Anesthesiology, Medical College of Wisconsin, Milwaukee, WI, USA.,Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, PR of China
| | - Brandon Itson-Zoske
- Department of Anesthesiology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Quinn H Hogan
- Department of Anesthesiology, Medical College of Wisconsin, Milwaukee, WI, USA.,Zablocki Veterans Affairs Medical Center, Milwaukee, WI, USA
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16
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Sipido KR, Vandevelde W. A virtual issue for the CBCS Summer School 2017: focus on hot topics. Cardiovasc Res 2018; 113:708-710. [PMID: 28525919 DOI: 10.1093/cvr/cvx083] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Affiliation(s)
- Karin R Sipido
- Department of Cardiovascular Sciences, Experimental Cardiology, KU Leuven, University of Leuven, Campus Gasthuisberg O/N1?704, Herestraat 49, B-3000 Leuven, Belgium
| | - Wouter Vandevelde
- Department of Cardiovascular Sciences, Experimental Cardiology, KU Leuven, University of Leuven, Campus Gasthuisberg O/N1?704, Herestraat 49, B-3000 Leuven, Belgium
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17
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Happle R. The concept of type 2 segmental mosaicism, expanding from dermatology to general medicine. J Eur Acad Dermatol Venereol 2018; 32:1075-1088. [PMID: 29405433 DOI: 10.1111/jdv.14838] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 12/19/2017] [Indexed: 12/11/2022]
Abstract
In autosomal dominant skin disorders, the well-known type 1 segmental mosaicism reflects heterozygosity for a postzygotic new mutation. By contrast, type 2 segmental mosaicism originates in a heterozygous embryo from an early postzygotic mutational event giving rise to loss of the corresponding wild-type allele, which results in a pronounced segmental involvement being superimposed on the ordinary, non-segmental phenotype. Today, this concept has been proven by molecular analysis in many cutaneous traits. The purpose of this review was to seek publications of cases suggesting an extracutaneous manifestation of type 2 segmental mosaicism. Case reports documenting a pronounced extracutaneous segmental involvement were collected from the literature available in PubMed and from personal communications to the author. Pertinent cases are compared to the description of cutaneous segmental mosaicism of type 1 or type 2 as reported in a given trait. In total, reports suggesting extracutaneous type 2 segmental mosaicism were found in 14 different autosomal dominant skin disorders. In this way, clinical evidence is accumulated that extracutaneous type 2 segmental mosaicism does likewise occur in many autosomal dominant skin disorders. So far, however, molecular proof of this particular form of mosaicism is lacking. The present review may stimulate readers to inform colleagues of other specialties on this new concept, in order to initiate further research in this particular field of knowledge that has important implications for diagnosis, treatment and genetic counselling.
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Affiliation(s)
- R Happle
- Department of Dermatology, Medical Center, University of Freiburg, Freiburg, Germany
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18
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Goumans MJ, Zwijsen A, Ten Dijke P, Bailly S. Bone Morphogenetic Proteins in Vascular Homeostasis and Disease. Cold Spring Harb Perspect Biol 2018; 10:cshperspect.a031989. [PMID: 28348038 DOI: 10.1101/cshperspect.a031989] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
It is well established that control of vascular morphogenesis and homeostasis is regulated by vascular endothelial growth factor (VEGF), fibroblast growth factor (FGF), Delta-like 4 (Dll4), angiopoietin, and ephrin signaling. It has become clear that signaling by bone morphogenetic proteins (BMPs), which have a long history of studies in bone and early heart development, are also essential for regulating vascular function. Indeed, mutations that cause deregulated BMP signaling are linked to two human vascular diseases, hereditary hemorrhagic telangiectasia and pulmonary arterial hypertension. These observations are corroborated by data obtained with vascular cells in cell culture and in mouse models. BMPs are required for normal endothelial cell differentiation and for venous/arterial and lymphatic specification. In adult life, BMP signaling orchestrates neo-angiogenesis as well as vascular inflammation, remodeling, and calcification responses to shear and oxidative stress. This review emphasizes the pivotal role of BMPs in the vascular system, based on studies of mouse models and human vascular disorders.
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Affiliation(s)
- Marie-José Goumans
- Department of Molecular Cell Biology, Leiden University Medical Center, 2300 RC Leiden, The Netherlands
| | - An Zwijsen
- VIB Center for the Biology of Disease, 3000 Leuven, Belgium.,KU Leuven Department of Human Genetics, 3000 Leuven, Belgium
| | - Peter Ten Dijke
- Department of Molecular Cell Biology, Leiden University Medical Center, 2300 RC Leiden, The Netherlands.,Cancer Genomics Centre Netherlands, Leiden University Medical Center, 2300 RC Leiden, The Netherlands
| | - Sabine Bailly
- Institut National de la Santé et de la Recherche Mécale (INSERM), U1036, 38000 Grenoble, France.,Laboratoire Biologie du Cancer et de l'Infection, Commissariat à l'Énergie Atomique et aux Energies Alternatives, Biosciences and Biotechnology Institute of Grenoble, 38000 Grenoble, France.,University of Grenoble Alpes, 38000 Grenoble, France
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19
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Cardiovascular Disease: An Introduction. BIOMATHEMATICAL AND BIOMECHANICAL MODELING OF THE CIRCULATORY AND VENTILATORY SYSTEMS 2018. [PMCID: PMC7123129 DOI: 10.1007/978-3-319-89315-0_1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Cardiovascular disease (CVD) is a collective term designating all types of affliction affecting the blood circulatory system, including the heart and vasculature, which, respectively, displaces and conveys the blood.
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20
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Phan DTT, Bender RHF, Andrejecsk JW, Sobrino A, Hachey SJ, George SC, Hughes CCW. Blood-brain barrier-on-a-chip: Microphysiological systems that capture the complexity of the blood-central nervous system interface. Exp Biol Med (Maywood) 2017; 242:1669-1678. [PMID: 28195514 PMCID: PMC5786363 DOI: 10.1177/1535370217694100] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The blood-brain barrier is a dynamic and highly organized structure that strictly regulates the molecules allowed to cross the brain vasculature into the central nervous system. The blood-brain barrier pathology has been associated with a number of central nervous system diseases, including vascular malformations, stroke/vascular dementia, Alzheimer's disease, multiple sclerosis, and various neurological tumors including glioblastoma multiforme. There is a compelling need for representative models of this critical interface. Current research relies heavily on animal models (mostly mice) or on two-dimensional (2D) in vitro models, neither of which fully capture the complexities of the human blood-brain barrier. Physiological differences between humans and mice make translation to the clinic problematic, while monolayer cultures cannot capture the inherently three-dimensional (3D) nature of the blood-brain barrier, which includes close association of the abluminal side of the endothelium with astrocyte foot-processes and pericytes. Here we discuss the central nervous system diseases associated with blood-brain barrier pathology, recent advances in the development of novel 3D blood-brain barrier -on-a-chip systems that better mimic the physiological complexity and structure of human blood-brain barrier, and provide an outlook on how these blood-brain barrier-on-a-chip systems can be used for central nervous system disease modeling. Impact statement The field of microphysiological systems is rapidly evolving as new technologies are introduced and our understanding of organ physiology develops. In this review, we focus on Blood-Brain Barrier (BBB) models, with a particular emphasis on how they relate to neurological disorders such as Alzheimer's disease, multiple sclerosis, stroke, cancer, and vascular malformations. We emphasize the importance of capturing the three-dimensional nature of the brain and the unique architecture of the BBB - something that until recently had not been well modeled by in vitro systems. Our hope is that this review will provide a launch pad for new ideas and methodologies that can provide us with truly physiological BBB models capable of yielding new insights into the function of this critical interface.
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Affiliation(s)
- Duc TT Phan
- Department of Molecular Biology & Biochemistry, University of California, Irvine, Irvine, CA 92697, USA
| | - R Hugh F Bender
- Department of Molecular Biology & Biochemistry, University of California, Irvine, Irvine, CA 92697, USA
| | - Jillian W Andrejecsk
- Department of Molecular Biology & Biochemistry, University of California, Irvine, Irvine, CA 92697, USA
| | - Agua Sobrino
- Department of Molecular Biology & Biochemistry, University of California, Irvine, Irvine, CA 92697, USA
| | - Stephanie J Hachey
- Department of Molecular Biology & Biochemistry, University of California, Irvine, Irvine, CA 92697, USA
| | - Steven C George
- Department of Biomedical Engineering, Washington University in St. Louis, St. Louis, MO 63130, USA
| | - Christopher CW Hughes
- Department of Molecular Biology & Biochemistry, University of California, Irvine, Irvine, CA 92697, USA
- Department of Biomedical Engineering, University of California, Irvine, Irvine, CA 92697, USA
- The Edwards Lifesciences Center for Advanced Cardiovascular Technology, University of California, Irvine, Irvine, CA 92697, USA
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21
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Abstract
Correct organization of the vascular tree requires the balanced activities of several signaling pathways that regulate tubulogenesis and vascular branching, elongation, and pruning. When this balance is lost, the vessels can be malformed and fragile, and they can lose arteriovenous differentiation. In this review, we concentrate on the transforming growth factor (TGF)-β/bone morphogenetic protein (BMP) pathway, which is one of the most important and complex signaling systems in vascular development. Inactivation of these pathways can lead to altered vascular organization in the embryo. In addition, many vascular malformations are related to deregulation of TGF-β/BMP signaling. Here, we focus on two of the most studied vascular malformations that are induced by deregulation of TGF-β/BMP signaling: hereditary hemorrhagic telangiectasia (HHT) and cerebral cavernous malformation (CCM). The first of these is related to loss-of-function mutation of the TGF-β/BMP receptor complex and the second to increased signaling sensitivity to TGF-β/BMP. In this review, we discuss the potential therapeutic targets against these vascular malformations identified so far, as well as their basis in general mechanisms of vascular development and stability.
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Affiliation(s)
- Sara I Cunha
- From the Department of Immunology, Genetics, and Pathology, Uppsala University, Sweden (S.I.C., P.U.M., E.D.); FIRC Institute of Molecular Oncology, Milan, Italy (E.D., M.G.L.); and Istituto di Ricerche Farmacologiche Mario Negri, Milan, Italy (M.G.L.)
| | - Peetra U Magnusson
- From the Department of Immunology, Genetics, and Pathology, Uppsala University, Sweden (S.I.C., P.U.M., E.D.); FIRC Institute of Molecular Oncology, Milan, Italy (E.D., M.G.L.); and Istituto di Ricerche Farmacologiche Mario Negri, Milan, Italy (M.G.L.)
| | - Elisabetta Dejana
- From the Department of Immunology, Genetics, and Pathology, Uppsala University, Sweden (S.I.C., P.U.M., E.D.); FIRC Institute of Molecular Oncology, Milan, Italy (E.D., M.G.L.); and Istituto di Ricerche Farmacologiche Mario Negri, Milan, Italy (M.G.L.).
| | - Maria Grazia Lampugnani
- From the Department of Immunology, Genetics, and Pathology, Uppsala University, Sweden (S.I.C., P.U.M., E.D.); FIRC Institute of Molecular Oncology, Milan, Italy (E.D., M.G.L.); and Istituto di Ricerche Farmacologiche Mario Negri, Milan, Italy (M.G.L.)
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22
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Franco CA, Gerhardt H. Blood flow boosts BMP signaling to keep vessels in shape. J Cell Biol 2017; 214:793-5. [PMID: 27672213 PMCID: PMC5037414 DOI: 10.1083/jcb.201609038] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Accepted: 09/12/2016] [Indexed: 11/22/2022] Open
Abstract
Bone morphogenic proteins (BMPs) and blood flow regulate vascular remodeling and homeostasis. In this issue, Baeyens et al. (2016. J. Cell Biol http://dx.doi.org/10.1083/jcb.201603106) show that blood flow sensitizes endothelial cells to BMP9 signaling by triggering Alk1/ENG complexing to suppress cell proliferation and to recruit mural cells, thereby establishing endothelial quiescence.
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Affiliation(s)
- Claudio A Franco
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - Holger Gerhardt
- Max-Delbrück Center for Molecular Medicine, 13125 Berlin, Germany Department of Oncology, Vascular Patterning Laboratory, Vesalius Research Center, 3000 Leuven, Belgium German Center for Cardiovascular Research, 13347 Berlin, Germany Berlin Institute of Health, 10117 Berlin, Germany
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23
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Franco CA, Gerhardt H. Morph or Move? How Distinct Endothelial Cell Responses to Blood Flow Shape Vascular Networks. Dev Cell 2017. [DOI: 10.1016/j.devcel.2017.06.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Tachida Y, Izumi N, Sakurai T, Kobayashi H. Mutual interaction between endothelial cells and mural cells enhances BMP9 signaling in endothelial cells. Biol Open 2017; 6:370-380. [PMID: 28298363 PMCID: PMC5374394 DOI: 10.1242/bio.020503] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Hereditary hemorrhagic telangiectasia is characterized by the formation of abnormal vascular networks and caused by the mutation of genes involved in BMP9 signaling. It is also known that the interaction between endothelial cells (ECs) and mural cells (MCs) is critical to maintain vessel integrity. However, it has not yet fully been uncovered whether the EC–MC interaction affects BMP9 signaling or not. To elucidate this point, we analyzed BMP9 signaling in a co-culture of several types of human primary culture ECs and MCs. The co-culture activated the Notch pathway in both types of cells in a co-culture- and BMP9-dependent manner. In HUVECs, the genes induced by BMP9 were significantly and synergistically induced in the presence of pericytes, fibroblasts or mesenchymal stem cells. The synergistic induction was greatly reduced in a non-contact condition. In fibroblasts, PDGFRB expression was potently induced in the presence of HUVECs, and BMP9 additively increased this response. Taken together, these results suggest that the EC–MC interaction potentiates BMP9 signaling both in ECs and MCs and plays a critical role in the maintenance of proper vessel functions. Summary: A mutual interaction between endothelial cells and mural cells enhances BMP9 signaling in endothelial cells, with implications for the maintenance of vascular integrity and vascular disease research.
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Affiliation(s)
- Yuki Tachida
- Pain and Neuroscience Laboratories, R&D Division, Daiichi Sankyo Co., Ltd., Tokyo 140-8710, Japan
| | - Nanae Izumi
- End-Organ Disease Laboratories, R&D Division, Daiichi Sankyo Co., Ltd., Tokyo 140-8710, Japan
| | - Toyo Sakurai
- Hit Discovery and Cell Processing Research Group Biological Research Department, Daiichi Sankyo RD Novare Co., Ltd., Tokyo 134-8630, Japan
| | - Hideki Kobayashi
- Pain and Neuroscience Laboratories, R&D Division, Daiichi Sankyo Co., Ltd., Tokyo 140-8710, Japan
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25
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Pardanaud L, Pibouin-Fragner L, Dubrac A, Mathivet T, English I, Brunet I, Simons M, Eichmann A. Sympathetic Innervation Promotes Arterial Fate by Enhancing Endothelial ERK Activity. Circ Res 2016; 119:607-20. [PMID: 27354211 DOI: 10.1161/circresaha.116.308473] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 06/24/2016] [Indexed: 12/31/2022]
Abstract
RATIONALE Arterial endothelial cells are morphologically, functionally, and molecularly distinct from those found in veins and lymphatic vessels. How arterial fate is acquired during development and maintained in adult vessels is incompletely understood. OBJECTIVE We set out to identify factors that promote arterial endothelial cell fate in vivo. METHODS AND RESULTS We developed a functional assay, allowing us to monitor and manipulate arterial fate in vivo, using arteries isolated from quails that are grafted into the coelom of chick embryos. Endothelial cells migrate out from the grafted artery, and their colonization of host arteries and veins is quantified. Here we show that sympathetic innervation promotes arterial endothelial cell fate in vivo. Removal of sympathetic nerves decreases arterial fate and leads to colonization of veins, whereas exposure to sympathetic nerves or norepinephrine imposes arterial fate. Mechanistically, sympathetic nerves increase endothelial ERK (extracellular signal-regulated kinase) activity via adrenergic α1 and α2 receptors. CONCLUSIONS These findings show that sympathetic innervation promotes arterial endothelial fate and may lead to novel approaches to improve arterialization in human disease.
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Affiliation(s)
- Luc Pardanaud
- From the INSERM U970, Paris Center for Cardiovascular Research (PARCC), Paris, France (L.P., L.P.-F., T.M., A.E.); Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT (A.D., M.S., A.E.); and INSERM U1050, Collège de France, Centre Interdisciplinaire de Recherche en Biologie (CIRB), Paris, France (I.E., I.B.).
| | - Laurence Pibouin-Fragner
- From the INSERM U970, Paris Center for Cardiovascular Research (PARCC), Paris, France (L.P., L.P.-F., T.M., A.E.); Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT (A.D., M.S., A.E.); and INSERM U1050, Collège de France, Centre Interdisciplinaire de Recherche en Biologie (CIRB), Paris, France (I.E., I.B.)
| | - Alexandre Dubrac
- From the INSERM U970, Paris Center for Cardiovascular Research (PARCC), Paris, France (L.P., L.P.-F., T.M., A.E.); Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT (A.D., M.S., A.E.); and INSERM U1050, Collège de France, Centre Interdisciplinaire de Recherche en Biologie (CIRB), Paris, France (I.E., I.B.)
| | - Thomas Mathivet
- From the INSERM U970, Paris Center for Cardiovascular Research (PARCC), Paris, France (L.P., L.P.-F., T.M., A.E.); Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT (A.D., M.S., A.E.); and INSERM U1050, Collège de France, Centre Interdisciplinaire de Recherche en Biologie (CIRB), Paris, France (I.E., I.B.)
| | - Isabel English
- From the INSERM U970, Paris Center for Cardiovascular Research (PARCC), Paris, France (L.P., L.P.-F., T.M., A.E.); Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT (A.D., M.S., A.E.); and INSERM U1050, Collège de France, Centre Interdisciplinaire de Recherche en Biologie (CIRB), Paris, France (I.E., I.B.)
| | - Isabelle Brunet
- From the INSERM U970, Paris Center for Cardiovascular Research (PARCC), Paris, France (L.P., L.P.-F., T.M., A.E.); Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT (A.D., M.S., A.E.); and INSERM U1050, Collège de France, Centre Interdisciplinaire de Recherche en Biologie (CIRB), Paris, France (I.E., I.B.)
| | - Michael Simons
- From the INSERM U970, Paris Center for Cardiovascular Research (PARCC), Paris, France (L.P., L.P.-F., T.M., A.E.); Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT (A.D., M.S., A.E.); and INSERM U1050, Collège de France, Centre Interdisciplinaire de Recherche en Biologie (CIRB), Paris, France (I.E., I.B.)
| | - Anne Eichmann
- From the INSERM U970, Paris Center for Cardiovascular Research (PARCC), Paris, France (L.P., L.P.-F., T.M., A.E.); Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT (A.D., M.S., A.E.); and INSERM U1050, Collège de France, Centre Interdisciplinaire de Recherche en Biologie (CIRB), Paris, France (I.E., I.B.).
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