1
|
Sunshine HL, Cicchetto AC, Kaczor-Urbanowicz KE, Ma F, Pi D, Symons C, Turner M, Shukla V, Christofk HR, Vallim TA, Iruela-Arispe ML. Endothelial Jagged1 levels and distribution are post-transcriptionally controlled by ZFP36 decay proteins. Cell Rep 2024; 43:113627. [PMID: 38157296 PMCID: PMC10884959 DOI: 10.1016/j.celrep.2023.113627] [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: 06/12/2023] [Revised: 11/02/2023] [Accepted: 12/12/2023] [Indexed: 01/03/2024] Open
Abstract
Vascular morphogenesis requires a delicate gradient of Notch signaling controlled, in part, by the distribution of ligands (Dll4 and Jagged1). How Jagged1 (JAG1) expression is compartmentalized in the vascular plexus remains unclear. Here, we show that Jag1 mRNA is a direct target of zinc-finger protein 36 (ZFP36), an RNA-binding protein involved in mRNA decay that we find robustly induced by vascular endothelial growth factor (VEGF). Endothelial cells lacking ZFP36 display high levels of JAG1 and increase angiogenic sprouting in vitro. Furthermore, mice lacking Zfp36 in endothelial cells display mispatterned and increased levels of JAG1 in the developing retinal vascular plexus. Abnormal levels of JAG1 at the sprouting front alters NOTCH1 signaling, increasing the number of tip cells, a phenotype that is rescued by imposing haploinsufficiency of Jag1. Our findings reveal an important feedforward loop whereby VEGF stimulates ZFP36, consequently suppressing Jag1 to enable adequate levels of Notch signaling during sprouting angiogenesis.
Collapse
Affiliation(s)
- Hannah L Sunshine
- Molecular, Cellular, and Integrative Physiology Graduate Program, University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Cell and Development Biology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Andrew C Cicchetto
- Department of Biological Chemistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Karolina Elżbieta Kaczor-Urbanowicz
- Center for Oral and Head/Neck Oncology Research, UCLA Biosystems & Function, UCLA School of Dentistry, University of California, Los Angeles, Los Angeles, CA 90095-1668, USA; UCLA Section of Orthodontics, UCLA School of Dentistry, University of California, Los Angeles, Los Angeles, CA 90095, USA; UCLA Institute for Quantitative and Computational Biosciences, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Feiyang Ma
- Department of Cell and Development Biology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Danielle Pi
- Department of Cell and Development Biology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Chloe Symons
- Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Martin Turner
- Immunology Programme, The Babraham Institute, CB22 3AT Cambridge, UK
| | - Vipul Shukla
- Department of Cell and Development Biology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA; Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA; Center for Human Immunobiology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Heather R Christofk
- Department of Biological Chemistry, University of California, Los Angeles, Los Angeles, CA 90095, USA; Jonsson Comprehensive Cancer Center, University of California, Los Angeles, Los Angeles, CA 90095-1606, USA
| | - Thomas A Vallim
- Department of Biological Chemistry, University of California, Los Angeles, Los Angeles, CA 90095, USA; Jonsson Comprehensive Cancer Center, University of California, Los Angeles, Los Angeles, CA 90095-1606, USA
| | - M Luisa Iruela-Arispe
- Department of Cell and Development Biology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA; Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA.
| |
Collapse
|
2
|
Niu Y, Xi Y, Jing Y, Zhou Z, Sun X, Zhang G, Yuan T, Chang T, Dou G. Endothelial Notch Signaling Regulates the Function of the Retinal Pigment Epithelial Barrier via EC Angiocrine Signaling. Antioxidants (Basel) 2023; 12:1979. [PMID: 38001832 PMCID: PMC10669439 DOI: 10.3390/antiox12111979] [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: 09/15/2023] [Revised: 10/30/2023] [Accepted: 11/01/2023] [Indexed: 11/26/2023] Open
Abstract
The outer blood-retina barrier (oBRB), comprises tightly connected retinal pigment epithelium (RPE) cells, Bruch's membrane, and choroid blood vessels, and is essential for retinal health and normal visual function. Disruption of the RPE barrier and its dysfunction can lead to retinal disorders such as age-related macular degeneration (AMD). In the present study, we investigated the essential role of choroid endothelial cells (ECs) in the RPE barrier formation process and its dysfunction. We discovered that ECs promoted RPE barrier formation through angiocrine signaling. Through blocking or activating endothelial Notch signaling and conducting experiments in vitro and in vivo, we confirmed that endothelial Notch signaling regulated the expression of heparin-binding epidermal growth factor (HBEGF) and consequently impacted the expression and activity of matrix metalloproteinases (MMP)-9 in RPE cells. This modulation influenced the RPE extracellular matrix deposition, tight junctions and RPE barrier function. In in vivo experiments, the intravitreal administration of recombinant HBEGF (r-HBEGF) alleviated the RPE barrier disruption induced by subretinal injection (SI) or laser treatment and also rescued RPE barrier disruption in endothelial Notch-deficient mice. Our results showed that the endothelial Notch signaling drove HBEGF expression through angiocrine signaling and effectively improved RPE barrier function by regulating the MMP-9 expression in RPE cells. It suggests that the modulation of Notch signaling in the choroidal endothelium may offer a novel therapeutic strategy for retinal degenerative diseases.
Collapse
Affiliation(s)
- Yali Niu
- Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China; (Y.N.); (Y.J.); (Z.Z.); (X.S.); (G.Z.); (T.Y.)
- College of Life Sciences, Northwest University, Xi’an 710069, China;
| | - Yixuan Xi
- College of Life Sciences, Northwest University, Xi’an 710069, China;
| | - Yutong Jing
- Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China; (Y.N.); (Y.J.); (Z.Z.); (X.S.); (G.Z.); (T.Y.)
| | - Ziyi Zhou
- Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China; (Y.N.); (Y.J.); (Z.Z.); (X.S.); (G.Z.); (T.Y.)
| | - Xiaojia Sun
- Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China; (Y.N.); (Y.J.); (Z.Z.); (X.S.); (G.Z.); (T.Y.)
| | - Guoheng Zhang
- Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China; (Y.N.); (Y.J.); (Z.Z.); (X.S.); (G.Z.); (T.Y.)
| | - Tianhao Yuan
- Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China; (Y.N.); (Y.J.); (Z.Z.); (X.S.); (G.Z.); (T.Y.)
| | - Tianfang Chang
- Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China; (Y.N.); (Y.J.); (Z.Z.); (X.S.); (G.Z.); (T.Y.)
| | - Guorui Dou
- Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China; (Y.N.); (Y.J.); (Z.Z.); (X.S.); (G.Z.); (T.Y.)
| |
Collapse
|
3
|
Singh AK, Prajapati KS, Kumar S. Hesperidin potentially interacts with the catalytic site of gamma-secretase and modifies notch sensitive genes and cancer stemness marker expression in colon cancer cells and colonosphere. J Biomol Struct Dyn 2023; 41:8432-8444. [PMID: 36239003 DOI: 10.1080/07391102.2022.2134213] [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: 07/26/2022] [Accepted: 10/03/2022] [Indexed: 10/17/2022]
Abstract
Gamma secretase (GS) produces Notch Intracellular Domain (NICD) by trans-membrane cleavage of notch receptor. The NICD enters the nucleus and activates the notch signaling pathway (NSP) by activating notch-responsive gene transcription. Hyperactivation of NSP is related to cancer aggressiveness, therapy resistance, and poor therapy outcome, and decreased overall disease-free survival in patients. Till date, none of the GS inhibitors (GSI) has been clinically approved due to their toxicity in patients. Thus in the present study, we explored the GS catalytic site binding potential of hesperidin (natural flavone glycoside) and its effect on notch responsive gene expression in HCT-116 cells. Molecular docking, MM-GBSA binding energy calculations, and molecular dynamics (MD) simulation experiments were performed to study the GS catalytic site binding potential of hesperidin. The compound showed better GS catalytic site binding potential at the active site compared to experimentally validated GSI, N-N-(3, 5-Difluorophenacetyl)-L-alanyl-S-phenylglycine t-butyl ester (DAPT) in molecular docking and MM-GBSA experiments. MD simulation results showed that hesperidin forms stable and energetically favorable complex with gamma secretase in comparison to standard inhibitor (DAPT)-GS complex. Further, in vitro experiments showed that hesperidin inhibited cell growth and sphere formation potential in HCT-116 cells. Further, hesperidin treatment altered notch responsive genes (Hes1, Hey1, and E-cad) and cancer stemness/self-renewal markers expression at transcription levels. In conclusion, hesperidin produces toxicity in HCT-116 cells and decreases colonosphere formation by inhibiting transcription of notch signaling pathway target genes and stemness markers.Communicated by Ramaswamy H. Sarma.
Collapse
Affiliation(s)
- Atul Kumar Singh
- Molecular Signaling & Drug Discovery Laboratory, Department of Biochemistry, Central University of Punjab, Bathinda, Punjab, India
| | - Kumari Sunita Prajapati
- Molecular Signaling & Drug Discovery Laboratory, Department of Biochemistry, Central University of Punjab, Bathinda, Punjab, India
| | - Shashank Kumar
- Molecular Signaling & Drug Discovery Laboratory, Department of Biochemistry, Central University of Punjab, Bathinda, Punjab, India
| |
Collapse
|
4
|
Song P, Duan J, Ding J, Liu J, Fang Z, Xu H, Li Z, Du W, Xu M, Ling Y, He F, Tao K, Wang L. Cellular senescence primes liver fibrosis regression through Notch-EZH2. MedComm (Beijing) 2023; 4:e346. [PMID: 37614965 PMCID: PMC10442476 DOI: 10.1002/mco2.346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 06/27/2023] [Accepted: 07/12/2023] [Indexed: 08/25/2023] Open
Abstract
Cellular senescence plays a pivotal role in wound healing. At the initiation of liver fibrosis regression, accumulated senescent cells were detected and genes of senescence were upregulated. Flow cytometry combined with single-cell RNA sequencing analyses revealed that most of senescent cells were liver nonparenchymal cells. Removing senescent cells by dasatinib and quercetin (DQ), alleviated hepatic cellular senescence, impeded fibrosis regression, and disrupted liver sinusoids. Clearance of senescent cells not only decreased senescent macrophages but also shrank the proportion of anti-inflammatory M2 macrophages through apoptotic pathway. Subsequently, macrophages were depleted by clodronate, which diminished hepatic senescent cells and impaired fibrosis regression. Mechanistically, the change of the epigenetic regulator enhancer of zeste homolog2 (EZH2) accompanied with the emergence of hepatic senescent cells while liver fibrosis regressed. Blocking EZH2 signaling by EPZ6438 reduced hepatic senescent cells and macrophages, decelerating liver fibrosis regression. Moreover, the promoter region of EZH2 was transcriptionally suppressed by Notch-Hes1 (hairy and enhancer of split 1) signaling. Disruption of Notch in macrophages using Lyz2 (lysozyme 2) Cre-RBP-J (recombination signal binding protein Jκ) f/f transgenic mice, enhanced hepatic cellular senescence, and facilitated fibrosis regression by upregulating EZH2 and blocking EZH2 abrogated the above effects caused by Notch deficiency. Ultimately, adopting Notch inhibitor Ly3039478 or exosome-mediated RBP-J decoy oligodeoxynucleotides accelerated liver fibrosis regression by augmenting hepatic cellular senescence.
Collapse
Affiliation(s)
- Ping Song
- Department of Hepatobiliary SurgeryXi‐Jing HospitalFourth Military Medical UniversityXi'anChina
| | - Juan‐Li Duan
- Department of Hepatobiliary SurgeryXi‐Jing HospitalFourth Military Medical UniversityXi'anChina
| | - Jian Ding
- Department of Hepatobiliary SurgeryXi‐Jing HospitalFourth Military Medical UniversityXi'anChina
| | - Jing‐Jing Liu
- Department of Hepatobiliary SurgeryXi‐Jing HospitalFourth Military Medical UniversityXi'anChina
| | - Zhi‐Qiang Fang
- Department of Hepatobiliary SurgeryXi‐Jing HospitalFourth Military Medical UniversityXi'anChina
| | - Hao Xu
- Department of Hepatobiliary SurgeryXi‐Jing HospitalFourth Military Medical UniversityXi'anChina
| | - Zhi‐Wen Li
- Department of Hepatobiliary SurgeryXi‐Jing HospitalFourth Military Medical UniversityXi'anChina
| | - Wei Du
- Department of Hepatobiliary SurgeryXi‐Jing HospitalFourth Military Medical UniversityXi'anChina
| | - Ming Xu
- Department of Hepatobiliary SurgeryXi‐Jing HospitalFourth Military Medical UniversityXi'anChina
| | - Yu‐Wei Ling
- Department of Hepatobiliary SurgeryXi‐Jing HospitalFourth Military Medical UniversityXi'anChina
| | - Fei He
- Department of Hepatobiliary SurgeryXi‐Jing HospitalFourth Military Medical UniversityXi'anChina
| | - Kai‐Shan Tao
- Department of Hepatobiliary SurgeryXi‐Jing HospitalFourth Military Medical UniversityXi'anChina
| | - Lin Wang
- Department of Hepatobiliary SurgeryXi‐Jing HospitalFourth Military Medical UniversityXi'anChina
| |
Collapse
|
5
|
Yang Y, Zhong J, Cui D, Jensen LD. Up-to-date molecular medicine strategies for management of ocular surface neovascularization. Adv Drug Deliv Rev 2023; 201:115084. [PMID: 37689278 DOI: 10.1016/j.addr.2023.115084] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 08/30/2023] [Accepted: 09/04/2023] [Indexed: 09/11/2023]
Abstract
Ocular surface neovascularization and its resulting pathological changes significantly alter corneal refraction and obstruct the light path to the retina, and hence is a major cause of vision loss. Various factors such as infection, irritation, trauma, dry eye, and ocular surface surgery trigger neovascularization via angiogenesis and lymphangiogenesis dependent on VEGF-related and alternative mechanisms. Recent advances in antiangiogenic drugs, nanotechnology, gene therapy, surgical equipment and techniques, animal models, and drug delivery strategies have provided a range of novel therapeutic options for the treatment of ocular surface neovascularization. In this review article, we comprehensively discuss the etiology and mechanisms of corneal neovascularization and other types of ocular surface neovascularization, as well as emerging animal models and drug delivery strategies that facilitate its management.
Collapse
Affiliation(s)
- Yunlong Yang
- Department of Cellular and Genetic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China.
| | - Junmu Zhong
- Department of Ophthalmology, Longyan First Hospital Affiliated to Fujian Medical University, Longyan 364000, Fujian Province, China
| | - Dongmei Cui
- Shenzhen Eye Hospital, Jinan University, Shenzhen Eye Institute, Shenzhen 518040, Guangdong Province, China
| | - Lasse D Jensen
- Department of Health, Medicine and Caring Sciences, Division of Diagnostics and Specialist Medicine, Unit of Cardiovascular Medicine, Linköping University, Linköping, Sweden.
| |
Collapse
|
6
|
Zhou ZY, Chang TF, Lin ZB, Jing YT, Wen LS, Niu YL, Bai Q, Guo CM, Sun JX, Wang YS, Dou GR. Microglial Galectin3 enhances endothelial metabolism and promotes pathological angiogenesis via Notch inhibition by competitively binding to Jag1. Cell Death Dis 2023; 14:380. [PMID: 37369647 DOI: 10.1038/s41419-023-05897-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 05/26/2023] [Accepted: 06/16/2023] [Indexed: 06/29/2023]
Abstract
Microglia were considered as immune cells in inflammation until their angiogenic role was widely understood. Although the pro-inflammatory role of microglia in retinal angiogenesis has been explored, little is known about its role in pro-angiogenesis and the microglia-endothelia interaction. Here, we report that galectin-3 (Gal3) released by activated microglia functions as a communicator between microglia and endothelia and competitively binds to Jag1, thus inhibiting the Notch signaling pathway and enhancing endothelial angiogenic metabolism to promote angiogenesis. These results suggest that Gal3 may be a novel and effective target in the treatment of retinal angiogenesis.
Collapse
Affiliation(s)
- Zi-Yi Zhou
- Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Tian-Fang Chang
- Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Zhi-Bin Lin
- Department of Hepatobiliary Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Yu-Tong Jing
- Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Li-Shi Wen
- Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Ya-Li Niu
- Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Qian Bai
- Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Chang-Mei Guo
- Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Jia-Xing Sun
- Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China.
| | - Yu-Sheng Wang
- Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China.
| | - Guo-Rui Dou
- Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China.
| |
Collapse
|
7
|
Gjølberg TT, Wik JA, Johannessen H, Krüger S, Bassi N, Christopoulos PF, Bern M, Foss S, Petrovski G, Moe MC, Haraldsen G, Fosse JH, Skålhegg BS, Andersen JT, Sundlisæter E. Antibody blockade of Jagged1 attenuates choroidal neovascularization. Nat Commun 2023; 14:3109. [PMID: 37253747 DOI: 10.1038/s41467-023-38563-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 05/08/2023] [Indexed: 06/01/2023] Open
Abstract
Antibody-based blocking of vascular endothelial growth factor (VEGF) reduces choroidal neovascularization (CNV) and retinal edema, rescuing vision in patients with neovascular age-related macular degeneration (nAMD). However, poor response and resistance to anti-VEGF treatment occurs. We report that targeting the Notch ligand Jagged1 by a monoclonal antibody reduces neovascular lesion size, number of activated phagocytes and inflammatory markers and vascular leakage in an experimental CNV mouse model. Additionally, we demonstrate that Jagged1 is expressed in mouse and human eyes, and that Jagged1 expression is independent of VEGF signaling in human endothelial cells. When anti-Jagged1 was combined with anti-VEGF in mice, the decrease in lesion size exceeded that of either antibody alone. The therapeutic effect was solely dependent on blocking, as engineering antibodies to abolish effector functions did not impair the therapeutic effect. Targeting of Jagged1 alone or in combination with anti-VEGF may thus be an attractive strategy to attenuate CNV-bearing diseases.
Collapse
Affiliation(s)
- Torleif Tollefsrud Gjølberg
- Department of Immunology, Oslo University Hospital Rikshospitalet, 0372, Oslo, Norway
- Institute of Clinical Medicine and Department of Pharmacology, University of Oslo and Oslo University Hospital, 0372, Oslo, Norway
- Center of Eye Research, Department of Ophthalmology, Oslo University Hospital and University of Oslo, 0450, Oslo, Norway
| | - Jonas Aakre Wik
- Department of Pathology, Oslo University Hospital Rikshospitalet, 0372, Oslo, Norway
- Department of Nutrition, Division of Molecular Nutrition, Institute of Basic Medical Sciences, University of Oslo, 0372, Oslo, Norway
| | - Hanna Johannessen
- Department of Pathology, Oslo University Hospital Rikshospitalet, 0372, Oslo, Norway
- Department of Pediatric Surgery, Oslo University Hospital Rikshospitalet, 0372, Oslo, Norway
| | - Stig Krüger
- Department of Pathology, Oslo University Hospital Rikshospitalet, 0372, Oslo, Norway
| | - Nicola Bassi
- Department of Pathology, Oslo University Hospital Rikshospitalet, 0372, Oslo, Norway
| | | | - Malin Bern
- Department of Immunology, Oslo University Hospital Rikshospitalet, 0372, Oslo, Norway
- Institute of Clinical Medicine and Department of Pharmacology, University of Oslo and Oslo University Hospital, 0372, Oslo, Norway
| | - Stian Foss
- Department of Immunology, Oslo University Hospital Rikshospitalet, 0372, Oslo, Norway
- Institute of Clinical Medicine and Department of Pharmacology, University of Oslo and Oslo University Hospital, 0372, Oslo, Norway
| | - Goran Petrovski
- Center of Eye Research, Department of Ophthalmology, Oslo University Hospital and University of Oslo, 0450, Oslo, Norway
| | - Morten C Moe
- Center of Eye Research, Department of Ophthalmology, Oslo University Hospital and University of Oslo, 0450, Oslo, Norway
| | - Guttorm Haraldsen
- Department of Pathology, Oslo University Hospital Rikshospitalet, 0372, Oslo, Norway
| | - Johanna Hol Fosse
- Department of Pathology, Oslo University Hospital Rikshospitalet, 0372, Oslo, Norway
| | - Bjørn Steen Skålhegg
- Department of Nutrition, Division of Molecular Nutrition, Institute of Basic Medical Sciences, University of Oslo, 0372, Oslo, Norway
| | - Jan Terje Andersen
- Department of Immunology, Oslo University Hospital Rikshospitalet, 0372, Oslo, Norway.
- Institute of Clinical Medicine and Department of Pharmacology, University of Oslo and Oslo University Hospital, 0372, Oslo, Norway.
| | - Eirik Sundlisæter
- Department of Pathology, Oslo University Hospital Rikshospitalet, 0372, Oslo, Norway.
| |
Collapse
|
8
|
Fernández-Chacón M, Mühleder S, Regano A, Garcia-Ortega L, Rocha SF, Torroja C, Sanchez-Muñoz MS, Lytvyn M, Casquero-Garcia V, De Andrés-Laguillo M, Muhl L, Orlich MM, Gaengel K, Camafeita E, Vázquez J, Benguría A, Iruela-Arispe ML, Dopazo A, Sánchez-Cabo F, Carter H, Benedito R. Incongruence between transcriptional and vascular pathophysiological cell states. NATURE CARDIOVASCULAR RESEARCH 2023; 2:2023530-549. [PMID: 37745941 PMCID: PMC7615119 DOI: 10.1038/s44161-023-00272-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 04/19/2023] [Indexed: 09/26/2023]
Abstract
The Notch pathway is a major regulator of endothelial transcriptional specification. Targeting the Notch receptors or Delta-like ligand 4 (Dll4) dysregulates angiogenesis. Here, by analyzing single and compound genetic mutants for all Notch signaling members, we find significant differences in the way ligands and receptors regulate liver vascular homeostasis. Loss of Notch receptors caused endothelial hypermitogenic cell-cycle arrest and senescence. Conversely, Dll4 loss triggered a strong Myc-driven transcriptional switch inducing endothelial proliferation and the tip-cell state. Myc loss suppressed the induction of angiogenesis in the absence of Dll4, without preventing the vascular enlargement and organ pathology. Similarly, inhibition of other pro-angiogenic pathways, including MAPK/ERK and mTOR, had no effect on the vascular expansion induced by Dll4 loss; however, anti-VEGFA treatment prevented it without fully suppressing the transcriptional and metabolic programs. This study shows incongruence between single-cell transcriptional states, vascular phenotypes and related pathophysiology. Our findings also suggest that the vascular structure abnormalization, rather than neoplasms, causes the reported anti-Dll4 antibody toxicity.
Collapse
Affiliation(s)
- Macarena Fernández-Chacón
- Molecular Genetics of Angiogenesis Group, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
- Faculty of Health Sciences, Universidad Loyola Andalucía, Seville, Spain
| | - Severin Mühleder
- Molecular Genetics of Angiogenesis Group, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Alvaro Regano
- Molecular Genetics of Angiogenesis Group, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Lourdes Garcia-Ortega
- Molecular Genetics of Angiogenesis Group, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Susana F. Rocha
- Molecular Genetics of Angiogenesis Group, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Carlos Torroja
- Bioinformatics Unit, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Maria S. Sanchez-Muñoz
- Molecular Genetics of Angiogenesis Group, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Mariya Lytvyn
- Molecular Genetics of Angiogenesis Group, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Verónica Casquero-Garcia
- Molecular Genetics of Angiogenesis Group, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Macarena De Andrés-Laguillo
- Molecular Genetics of Angiogenesis Group, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Lars Muhl
- Department of Medicine, Huddinge, Karolinska Institutet, Huddinge, Sweden
| | - Michael M. Orlich
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala, Sweden
| | - Konstantin Gaengel
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala, Sweden
| | - Emilio Camafeita
- Cardiovascular Proteomics Laboratory, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
- CIBER de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Jesús Vázquez
- Cardiovascular Proteomics Laboratory, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
- CIBER de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Alberto Benguría
- Genomics Unit, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - M. Luisa Iruela-Arispe
- Department of Cell and Development Biology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Ana Dopazo
- CIBER de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
- Genomics Unit, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Fátima Sánchez-Cabo
- Bioinformatics Unit, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
- CIBER de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Hannah Carter
- Division of Medical Genetics, Department of Medicine and Moores Cancer Center, University of California San Diego, La Jolla, CA, USA
| | - Rui Benedito
- Molecular Genetics of Angiogenesis Group, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| |
Collapse
|
9
|
Familial 4p Interstitial Deletion Provides New Insights and Candidate Genes Underlying This Rare Condition. Genes (Basel) 2023; 14:genes14030635. [PMID: 36980907 PMCID: PMC10048360 DOI: 10.3390/genes14030635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 02/27/2023] [Accepted: 03/01/2023] [Indexed: 03/06/2023] Open
Abstract
Chromosome 4p deletions can lead to two distinct phenotypic outcomes: Wolf-–Hirschhorn syndrome (a terminal deletion at 4p16.3) and less frequently reported proximal interstitial deletions (4p11-p16). Proximal 4p interstitial deletions can result in mild to moderate intellectual disability, facial dysmorphisms, and a tall thin body habitus. To date, only 35 cases of proximal 4p interstitial deletions have been reported, and only two of these cases have been familial. The critical region for this syndrome has been narrowed down to 4p15.33-15.2, but the underlying causative genes remain unclear. In this study, we report the case of a 3-year-old female with failure to thrive, developmental and motor delays, and morphological features. The mother also had a 4p15.2-p14 deletion, and the proband was found to have a 13.4-Mb 4p15.2-p14 deletion by chromosome microarray analysis. The deleted region encompasses 16 genes, five of which have a high likelihood of contributing to the phenotype: PPARGC1A, DHX15, RBPJ, STIM2, and PCDH7. These findings suggest that multiple genes are involved in this rare proximal 4p interstitial deletion syndrome. This case highlights the need for healthcare providers to be aware of proximal 4p interstitial deletions and the potential phenotypic manifestations.
Collapse
|
10
|
Hasan SS, Fischer A. Notch Signaling in the Vasculature: Angiogenesis and Angiocrine Functions. Cold Spring Harb Perspect Med 2023; 13:cshperspect.a041166. [PMID: 35667708 PMCID: PMC9899647 DOI: 10.1101/cshperspect.a041166] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Formation of a functional blood vessel network is a complex process tightly controlled by pro- and antiangiogenic signals released within the local microenvironment or delivered through the bloodstream. Endothelial cells precisely integrate such temporal and spatial changes in extracellular signals and generate an orchestrated response by modulating signaling transduction, gene expression, and metabolism. A key regulator in vessel formation is Notch signaling, which controls endothelial cell specification, proliferation, migration, adhesion, and arteriovenous differentiation. This review summarizes the molecular biology of endothelial Notch signaling and how it controls angiogenesis and maintenance of the established, quiescent vasculature. In addition, recent progress in the understanding of Notch signaling in endothelial cells for controlling organ homeostasis by transcriptional regulation of angiocrine factors and its relevance to disease will be discussed.
Collapse
Affiliation(s)
- Sana S Hasan
- Division Vascular Signaling and Cancer, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Andreas Fischer
- Division Vascular Signaling and Cancer, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany.,Institute for Clinical Chemistry, University Medical Center Göttingen, 37075 Göttingen, Germany.,European Center for Angioscience (ECAS), Medical Faculty Mannheim, University of Heidelberg, 68167 Mannheim, Germany
| |
Collapse
|
11
|
Guo Q, Chen G, Cheng H, Qing Y, Truong L, Ma Q, Wang Y, Cheng J. Temporal regulation of notch activation improves arteriovenous fistula maturation. J Transl Med 2022; 20:543. [PMID: 36419038 PMCID: PMC9682688 DOI: 10.1186/s12967-022-03727-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 10/23/2022] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Arteriovenous fistula (AVF) maturation is a process involving remodeling of venous arm of the AVFs. It is a challenge to balance adaptive AVF remodeling and neointima formation. In this study we temporally controlled Notch activation to promote AVF maturation while avoiding neointima formation. METHODS Temporal Notch activation was controlled by regulating the expression of Notch transcription factor, RBP-Jκ, or dnMAML1 (dominant negative MAML2) in vascular smooth muscle cells (VSMCs). AVF mouse model was created and VSMC phenotype dynamic changes during AVF remodeling were determined. RESULTS Activated Notch was found in the nuclei of neointimal VSMCs in AVFs from uremic mice. We found that the VSMCs near the anastomosis became dedifferentiated and activated after AVF creation. These dedifferentiated VSMCs regained smooth muscle contractile markers later during AVF remodeling. However, global or VSMC-specific KO of RBP-Jκ at early stage (before or 1 week after AVF surgery) blocked VSMC differentiation and neointima formation in AVFs. These un-matured AVFs showed less intact endothelium and increased infiltration of inflammatory cells. Consequently, the VSMC fate in the neointima was completely shut down, leading to an un-arterialized AVF. In contrast, KO of RBP-Jκ at late stage (3 weeks after AVF surgery), it could not block neointima formation and vascular stenosis. Inhibition of Notch activation at week 1 or 2, could maintain VSMC contractile markers expression and facilitate AVF maturation. CONCLUSIONS This work uncovers the molecular and cellular events in each segment of AVF remodeling and found that neither sustained increasing nor blocking of Notch signaling improves AVF maturation. It highlights a novel strategy to improve AVF patency: temporally controlled Notch activation can achieve a balance between adaptive AVF remodeling and neointima formation to improve AVF maturation. TRANSLATIONAL PERSPECTIVE Adaptive vascular remodeling is required for AVF maturation. The balance of wall thickening of the vein and neointima formation in AVF determines the fate of AVF function. Sustained activation of Notch signaling in VSMCs promotes neointima formation, while deficiency of Notch signaling at early stage during AVF remodeling prevents VSMC accumulation and differentiation from forming a functional AVFs. These responses also delay EC regeneration and impair EC barrier function with increased inflammation leading to failed vascular remodeling of AVFs. Thus, a strategy to temporal regulate Notch activation will improve AVF maturation.
Collapse
Affiliation(s)
- Qunying Guo
- grid.12981.330000 0001 2360 039XDepartment of Nephrology, Key Laboratory of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Ministry of Health and Guangdong Province, Guangzhou, China ,grid.39382.330000 0001 2160 926XSection of Nephrology, Department of Medicine, Selzman Institute for Kidney Health, Baylor College of Medicine, Houston, TX 77030 USA
| | - Guang Chen
- grid.39382.330000 0001 2160 926XSection of Nephrology, Department of Medicine, Selzman Institute for Kidney Health, Baylor College of Medicine, Houston, TX 77030 USA ,grid.33199.310000 0004 0368 7223 Department of Integrated Traditional Chinese and Western Medicine, Tongji Medical College, Huangzhong University of Science and Technology, Wuhan, China
| | - Hunter Cheng
- grid.240145.60000 0001 2291 4776Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030 USA
| | - Ying Qing
- grid.39382.330000 0001 2160 926XSection of Nephrology, Department of Medicine, Selzman Institute for Kidney Health, Baylor College of Medicine, Houston, TX 77030 USA
| | - Luan Truong
- grid.63368.380000 0004 0445 0041Department of Pathology, Houston Methodist Hospital, Houston, TX 77030 USA
| | - Quan Ma
- grid.39382.330000 0001 2160 926XSection of Nephrology, Department of Medicine, Selzman Institute for Kidney Health, Baylor College of Medicine, Houston, TX 77030 USA
| | - Yun Wang
- grid.39382.330000 0001 2160 926XSection of Nephrology, Department of Medicine, Selzman Institute for Kidney Health, Baylor College of Medicine, Houston, TX 77030 USA
| | - Jizhong Cheng
- grid.39382.330000 0001 2160 926XSection of Nephrology, Department of Medicine, Selzman Institute for Kidney Health, Baylor College of Medicine, Houston, TX 77030 USA
| |
Collapse
|
12
|
Xu D, Qu X, Tian Y, Jie Z, Xi Z, Xue F, Ma X, Zhu J, Xia Q. Macrophage Notch1 inhibits TAK1 function and RIPK3-mediated hepatocyte necroptosis through activation of β-catenin signaling in liver ischemia and reperfusion injury. Cell Commun Signal 2022; 20:144. [PMID: 36114543 PMCID: PMC9479434 DOI: 10.1186/s12964-022-00901-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 05/20/2022] [Indexed: 11/10/2022] Open
Abstract
Background Notch signaling is highly conserved and critically involved in cell differentiation, immunity, and survival. Activation of the Notch pathway modulates immune cell functions during the inflammatory response. However, it remains unknown whether and how the macrophage Notch1 may control the innate immune signaling TAK1, and RIPK3-mediated hepatocyte necroptosis in liver ischemia and reperfusion injury (IRI). This study investigated the molecular mechanisms of macrophage Notch1 in modulating TAK1-mediated innate immune responses and RIPK3 functions in liver IRI. Methods Myeloid-specific Notch1 knockout (Notch1M−KO) and floxed Notch1 (Notch1FL/FL) mice (n = 6/group) were subjected to 90 min partial liver warm ischemia followed by 6 h of reperfusion. In a parallel in vitro study, bone marrow-derived macrophages (BMMs) were isolated from these conditional knockout mice and transfected with CRISPR/Cas9-mediated β-catenin knockout (KO) vector followed by LPS (100 ng/ml) stimulation. Results IR stress-induced Notch1 activation evidenced by increased nuclear Notch intracellular domain (NICD) expression in liver macrophages. Myeloid Notch1 deficiency exacerbated IR-induced liver damage, with increased serum ALT levels, macrophage/neutrophil accumulation, and proinflammatory cytokines/chemokines production compared to the Notch1FL/FL controls. Unlike in the Notch1FL/FL controls, Notch1M−KO enhanced TRAF6, TAK1, NF-κB, RIPK3, and MLKL but reduced β-catenin activation in ischemic livers. However, adoptive transfer of lentivirus β-catenin-modified macrophages markedly improved liver function with reduced TRAF6, p-TAK1, RIPK3 and p-MLKL in IR-challenged livers. Moreover, disruption of RIPK3 in Notch1M−KO mice with an in vivo mannose-mediated RIPK3 siRNA delivery system diminished IR-triggered hepatocyte death. In vitro studies showed that macrophage NICD and β-catenin co-localized in the nucleus, whereby β-catenin interacted with NICD in response to LPS stimulation. Disruption of β-catenin with a CRISPR/Cas9-mediated β-catenin KO in Notch1FL/FL macrophage augmented TRAF6 activation leading to enhanced TAK1 function. While CRISPR/Cas9-mediated TRAF6 KO in Notch1M−KO macrophage inhibited RIPK3-mediated hepatocyte necroptosis after co-culture with primary hepatocytes. Conclusions Macrophage Notch1 controls TAK1-mediated innate immune responses and RIPK3-mediated hepatocyte necroptosis through activation of β-catenin. β-catenin is required for the macrophage Notch1-mediated immune regulation in liver IRI. Our findings demonstrate that the macrophage Notch1-β-catenin axis is a crucial regulatory mechanism in IR-triggered liver inflammation and provide novel therapeutic potential in organ IRI and transplant recipients. Video abstract
Supplementary Information The online version contains supplementary material available at 10.1186/s12964-022-00901-8.
Collapse
|
13
|
Fang ZQ, Ruan B, Liu JJ, Duan JL, Yue ZS, Song P, Xu H, Ding J, Xu C, Dou GR, Wang L. Notch-triggered maladaptation of liver sinusoidal endothelium aggravates nonalcoholic steatohepatitis through endothelial nitric oxide synthase. Hepatology 2022; 76:742-758. [PMID: 35006626 DOI: 10.1002/hep.32332] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 01/06/2022] [Accepted: 01/06/2022] [Indexed: 01/04/2023]
Abstract
BACKGROUND AND AIMS Although NASH can lead to severe clinical consequences, including cirrhosis and hepatocellular carcinoma, no effective treatment is currently available for this disease. Increasing evidence indicates that LSECs play a critical role in NASH pathogenesis; however, the mechanisms involved in LSEC-mediated NASH remain to be fully elucidated. APPROACH AND RESULTS In the current study, we found that LSEC homeostasis was disrupted and LSEC-specific gene profiles were altered in methionine-choline-deficient (MCD) diet-induced NASH mouse models. Importantly, Notch signaling was found to be activated in LSECs of NASH mice. To then investigate the role of endothelial Notch in NASH progression, we generated mouse lines with endothelial-specific Notch intracellular domain (NICD) overexpression or RBP-J knockout to respectively activate or inhibit Notch signaling in endothelial cells. Notably, endothelial-specific overexpression of the NICD accelerated LSEC maladaptation and aggravated NASH, whereas endothelial cell-specific inhibition of Notch signaling restored LSEC homeostasis and improved NASH phenotypes. Furthermore, we demonstrated that endothelial-specific Notch activation exacerbated NASH by inhibiting endothelial nitric oxide synthase (eNOS) transcription, whereas administration of the pharmacological eNOS activator YC-1 alleviated hepatic steatosis and lipid accumulation resulting from Notch activation. Finally, to explore the therapeutic potential of using Notch inhibitors in NASH treatment, we applied two gamma-secretase inhibitors-DAPT and LY3039478-in an MCD diet-induced mouse model of NASH, and found that both inhibitors effectively ameliorated hepatic steatosis, inflammation, and liver fibrosis. CONCLUSIONS Endothelial-specific Notch activation triggered LSEC maladaptation and exacerbated NASH phenotypes in an eNOS-dependent manner. Genetic and pharmacological inhibition of Notch signaling effectively restored LSEC homeostasis and ameliorated NASH progression.
Collapse
Affiliation(s)
- Zhi-Qiang Fang
- Department of Hepatobiliary Surgery, Xi-Jing Hospital, Fourth Military Medical University, Xi'an, China
| | - Bai Ruan
- Department of Hepatobiliary Surgery, Xi-Jing Hospital, Fourth Military Medical University, Xi'an, China.,State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, China.,Center of Clinical Aerospace Medicine & Department of Aviation Medicine, Fourth Military Medical University, Xi'an, China
| | - Jing-Jing Liu
- Department of Hepatobiliary Surgery, Xi-Jing Hospital, Fourth Military Medical University, Xi'an, China
| | - Juan-Li Duan
- Department of Hepatobiliary Surgery, Xi-Jing Hospital, Fourth Military Medical University, Xi'an, China
| | - Zhen-Sheng Yue
- Department of Hepatobiliary Surgery, Xi-Jing Hospital, Fourth Military Medical University, Xi'an, China.,Department of Ophthalmology, Xi-Jing Hospital, Fourth Military Medical University, Xi'an, China
| | - Ping Song
- Department of Hepatobiliary Surgery, Xi-Jing Hospital, Fourth Military Medical University, Xi'an, China
| | - Hao Xu
- Department of Hepatobiliary Surgery, Xi-Jing Hospital, Fourth Military Medical University, Xi'an, China
| | - Jian Ding
- Department of Hepatobiliary Surgery, Xi-Jing Hospital, Fourth Military Medical University, Xi'an, China
| | - Chen Xu
- Department of Hepatobiliary Surgery, Xi-Jing Hospital, Fourth Military Medical University, Xi'an, China
| | - Guo-Rui Dou
- Department of Ophthalmology, Xi-Jing Hospital, Fourth Military Medical University, Xi'an, China
| | - Lin Wang
- Department of Hepatobiliary Surgery, Xi-Jing Hospital, Fourth Military Medical University, Xi'an, China.,State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, China
| |
Collapse
|
14
|
Notch activation suppresses endothelial cell migration and sprouting via miR-223-3p targeting Fbxw7. In Vitro Cell Dev Biol Anim 2022; 58:124-135. [PMID: 35194762 DOI: 10.1007/s11626-022-00649-y] [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: 09/09/2021] [Accepted: 01/07/2022] [Indexed: 01/10/2023]
Abstract
Angiogenesis involves temporo-spatially coordinated endothelial cell (EC) proliferation, differentiation, migration, and sprouting. Notch signaling is essential in regulating EC behaviors during angiogenesis, but its downstream mechanisms remain incompletely defined. In the current study, we show that miR-223-3p is a downstream molecule of Notch signaling and mediates the role of Notch signaling in regulating EC migration and sprouting. In human umbilical vein endothelial cells (HUVECs), Notch activation by immobilized Dll4, a Notch ligand, upregulated miR-223-3p, and Notch activation-mediated miR-223-3p upregulation could be blocked by a γ-secretase inhibitor (DAPT). miR-223-3p overexpression apparently repressed HUVEC migration, leading to attenuated lumen formation and sprouting capacities. Transcriptome comparison and subsequent qRT-PCR validation further indicated that miR-223-3p downregulated the expression of multiple genes involved in EC migration, axon guidance, extracellular matrix remodeling, and angiogenesis. In addition, miR-223-3p antagonist transfection abolished Notch-mediated repression of EC migration and sprouting. By quantitative reverse transcription-polymerase chain reaction (qRT-PCR), western blotting, and reporter assay analysis, we confirmed that miR-223-3p directly targeted F-box and WD repeat domain-containing 7 (Fbxw7). Meanwhile, Fbxw7 overexpression could efficiently rescue the impaired migration capacity of ECs under miR-223-3p overexpression. In summary, these results identify that Notch activation-induced miR-223-3p suppresses EC migration and sprouting via Fbxw7.
Collapse
|
15
|
Sun JX, Dou GR, Yang ZY, Liang L, Duan JL, Ruan B, Li MH, Chang TF, Xu XY, Chen JJ, Wang YS, Yan XC, Han H. Notch activation promotes endothelial quiescence by repressing MYC expression via miR-218. MOLECULAR THERAPY-NUCLEIC ACIDS 2021; 25:554-566. [PMID: 34589277 PMCID: PMC8463319 DOI: 10.1016/j.omtn.2021.07.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 07/26/2021] [Indexed: 11/26/2022]
Abstract
After angiogenesis-activated embryonic and early postnatal vascularization, endothelial cells (ECs) in most tissues enter a quiescent state necessary for proper tissue perfusion and EC functions. Notch signaling is essential for maintaining EC quiescence, but the mechanisms of action remain elusive. Here, we show that microRNA-218 (miR-218) is a downstream effector of Notch in quiescent ECs. Notch activation upregulated, while Notch blockade downregulated, miR-218 and its host gene Slit2, likely via transactivation of the Slit2 promoter. Overexpressing miR-218 in human umbilical vein ECs (HUVECs) significantly repressed cell proliferation and sprouting in vitro. Transcriptomics showed that miR-218 overexpression attenuated the MYC proto-oncogene, bHLH transcription factor (MYC, also known as c-myc) signature. MYC overexpression rescued miR-218-mediated proliferation and sprouting defects in HUVECs. MYC was repressed by miR-218 via multiple mechanisms, including reduction of MYC mRNA, repression of MYC translation by targeting heterogeneous nuclear ribonucleoprotein A1 (hnRNPA1), and promoting MYC degradation by targeting EYA3. Inhibition of miR-218 partially reversed Notch-induced repression of HUVEC proliferation and sprouting. In vivo, intravitreal injection of miR-218 reduced retinal EC proliferation accompanied by MYC repression, attenuated pathological choroidal neovascularization, and rescued retinal EC hyper-sprouting induced by Notch blockade. In summary, miR-218 mediates the effect of Notch activation of EC quiescence via MYC and is a potential treatment for angiogenesis-related diseases.
Collapse
Affiliation(s)
- Jia-Xing Sun
- State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an 710032, China.,Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Guo-Rui Dou
- Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Zi-Yan Yang
- State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an 710032, China
| | - Liang Liang
- State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an 710032, China
| | - Juan-Li Duan
- State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an 710032, China
| | - Bai Ruan
- State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an 710032, China
| | - Man-Hong Li
- Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Tian-Fang Chang
- Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Xin-Yuan Xu
- State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an 710032, China
| | - Juan-Juan Chen
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Yu-Sheng Wang
- Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Xian-Chun Yan
- State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an 710032, China
| | - Hua Han
- State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an 710032, China
| |
Collapse
|
16
|
Abstract
The Notch signalling pathway is one of the main regulators of endothelial biology. In the last 20 years the critical function of Notch has been uncovered in the context of angiogenesis, participating in tip-stalk specification, arterial-venous differentiation, vessel stabilization, and maturation processes. Importantly, pharmacological compounds targeting distinct members of the Notch signalling pathway have been used in the clinics for cancer therapy. However, the underlying mechanisms that support the variety of outcomes triggered by Notch in apparently opposite contexts such as angiogenesis and vascular homeostasis remain unknown. In recent years, advances in -omics technologies together with mosaic analysis and high molecular, cellular and temporal resolution studies have allowed a better understanding of the mechanisms driven by the Notch signalling pathway in different endothelial contexts. In this review we will focus on the main findings that revisit the role of Notch signalling in vascular biology. We will also discuss potential future directions and technologies that will shed light on the puzzling role of Notch during endothelial growth and homeostasis. Addressing these open questions may allow the improvement and development of therapeutic strategies based on modulation of the Notch signalling pathway.
Collapse
|
17
|
Christopoulos PF, Gjølberg TT, Krüger S, Haraldsen G, Andersen JT, Sundlisæter E. Targeting the Notch Signaling Pathway in Chronic Inflammatory Diseases. Front Immunol 2021; 12:668207. [PMID: 33912195 PMCID: PMC8071949 DOI: 10.3389/fimmu.2021.668207] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 03/24/2021] [Indexed: 12/14/2022] Open
Abstract
The Notch signaling pathway regulates developmental cell-fate decisions and has recently also been linked to inflammatory diseases. Although therapies targeting Notch signaling in inflammation in theory are attractive, their design and implementation have proven difficult, at least partly due to the broad involvement of Notch signaling in regenerative and homeostatic processes. In this review, we summarize the supporting role of Notch signaling in various inflammation-driven diseases, and highlight efforts to intervene with this pathway by targeting Notch ligands and/or receptors with distinct therapeutic strategies, including antibody designs. We discuss this in light of lessons learned from Notch targeting in cancer treatment. Finally, we elaborate on the impact of individual Notch members in inflammation, which may lay the foundation for development of therapeutic strategies in chronic inflammatory diseases.
Collapse
Affiliation(s)
| | - Torleif T. Gjølberg
- Institute of Clinical Medicine and Department of Pharmacology, University of Oslo and Oslo University Hospital, Oslo, Norway
- Centre for Eye Research and Department of Ophthalmology, University of Oslo and Oslo University Hospital, Oslo, Norway
- Department of Immunology, University of Oslo and Oslo University Hospital, Oslo, Norway
| | - Stig Krüger
- Department of Pathology, University of Oslo and Oslo University Hospital, Oslo, Norway
| | - Guttorm Haraldsen
- Department of Pathology, University of Oslo and Oslo University Hospital, Oslo, Norway
| | - Jan Terje Andersen
- Institute of Clinical Medicine and Department of Pharmacology, University of Oslo and Oslo University Hospital, Oslo, Norway
- Department of Immunology, University of Oslo and Oslo University Hospital, Oslo, Norway
| | - Eirik Sundlisæter
- Department of Pathology, University of Oslo and Oslo University Hospital, Oslo, Norway
| |
Collapse
|
18
|
Chen H, Feng Z, Li L, Fan L. MicroRNA-9 rescues hyperglycemia-induced endothelial cell dysfunction and promotes arteriogenesis through downregulating Notch1 signaling. Mol Cell Biochem 2021; 476:2777-2789. [PMID: 33721156 DOI: 10.1007/s11010-021-04075-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Accepted: 01/17/2021] [Indexed: 12/11/2022]
Abstract
Hyperglycemia-induced endothelial dysfunction plays a major role in the pathogenesis of diabetic vascular complications. MicroRNAs are potential therapeutic agents to improve hyperglycemia-induced endothelial dysfunction. This study examined the relationship of miR-9 with Notch1 signaling in hyperglycemia-induced endothelial dysfunction. Human umbilical vein endothelial cells (HUVECs) were exposed to 30 mM glucose concentration. Cell viability including proliferation, adhesion, migration and tube formation was significantly impaired. Quantitative real time polymerase chain reaction (qRT-PCR) or Western blot demonstrated that miR-9 expression remarkably decreased and expression of Notch1 and its effectors (Hes1, Hey1, Hey2) were upregulated. Transfection with miR-9 improved cell function, inhibited mRNA and protein expression of Notch1 and its effectors. Although basal expression of the arterial endothelium biomarker Ephrin B2 was almost undetectable in HUVECs, double-label immunofluorescence revealed that transfection with miR-9 upregulated Ephrin B2 expression. By contrast, such protective effects of miR-9 overexpression were eliminated due to use of miR-9 inhibitor. Dual luciferase assay further confirmed a significant inverse correlation between miR-9 and Notch1. In addition, Notch1 overactiviation was mimicked in HUVECs by transfecting with Notch1 intracellular domain (NICD1). MiR-9 significantly inhibited NICD1 mRNA expression and alleviated hyperglycemia-induced injury of the NICD1-overexpressing cells. Taken together, our data support upregulating miR-9 expression as a potential therapeutic strategy to antagonize hyperglycemia-induced injury by inhibiting Notch1 signaling.
Collapse
Affiliation(s)
- Huang Chen
- Department of Cardiology, Fujian Medical University Union Hospital, Xinquan Road 29#, Fuzhou, 350001, China.,Institute of Coronary Heart Disease of Fujian Province, Xinquan Road 29#, Fuzhou, 350001, China
| | - Zhihai Feng
- Department of Cardiology, Fujian Medical University Union Hospital, Xinquan Road 29#, Fuzhou, 350001, China.,Institute of Coronary Heart Disease of Fujian Province, Xinquan Road 29#, Fuzhou, 350001, China
| | - Lieyou Li
- Department of Cardiology, Fujian Medical University Union Hospital, Xinquan Road 29#, Fuzhou, 350001, China.,Institute of Coronary Heart Disease of Fujian Province, Xinquan Road 29#, Fuzhou, 350001, China
| | - Lin Fan
- Department of Cardiology, Fujian Medical University Union Hospital, Xinquan Road 29#, Fuzhou, 350001, China. .,Institute of Coronary Heart Disease of Fujian Province, Xinquan Road 29#, Fuzhou, 350001, China. .,Department of Geriatrics, Fujian Medical University Union Hospital, Xinquan Road 29#, Fuzhou, 350001, China. .,Institute of Geriatrics of Fujian Province, Xinquan Road 29#, Fuzhou, 350001, China.
| |
Collapse
|
19
|
Ristori T, Sjöqvist M, Sahlgren CM. Ex Vivo Models to Decipher the Molecular Mechanisms of Genetic Notch Cardiovascular Disorders. Tissue Eng Part C Methods 2021; 27:167-176. [PMID: 33403934 PMCID: PMC7984653 DOI: 10.1089/ten.tec.2020.0327] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 01/04/2020] [Indexed: 12/13/2022] Open
Abstract
Notch is an evolutionary, conserved, cell-cell signaling pathway that is central to several biological processes, from tissue morphogenesis to homeostasis. It is therefore not surprising that several genetic mutations of Notch components cause inherited human diseases, especially cardiovascular disorders. Despite numerous efforts, current in vivo models are still insufficient to unravel the underlying mechanisms of these pathologies, hindering the development of utmost needed medical therapies. In this perspective review, we discuss the limitations of current murine models and outline how the combination of microphysiological systems (MPSs) and targeted computational models can lead to breakthroughs in this field. In particular, while MPSs enable the experimentation on human cells in controlled and physiological environments, in silico models can provide a versatile tool to translate the in vitro findings to the more complex in vivo setting. As a showcase example, we focus on Notch-related cardiovascular diseases, such as Alagille syndrome, Adams-Oliver syndrome, and cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL). Impact statement In this review, a comprehensive overview of the limitations of current in vivo models of genetic Notch cardiovascular diseases is provided, followed by a discussion over the potential of microphysiological systems and computational models in overcoming these limitations and in potentiating drug testing and modeling of these pathologies.
Collapse
Affiliation(s)
- Tommaso Ristori
- Department of Biomedical Engineering, Technical University of Eindhoven, Eindhoven, The Netherlands
- Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, The Netherlands
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts, USA
| | - Marika Sjöqvist
- Faculty of Science and Engineering, Biosciences, Åbo Akademi University, Turku, Finland
- Turku Bioscience Centre, Åbo Akademi University and University of Turku, Turku, Finland
| | - Cecilia M. Sahlgren
- Department of Biomedical Engineering, Technical University of Eindhoven, Eindhoven, The Netherlands
- Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, The Netherlands
- Faculty of Science and Engineering, Biosciences, Åbo Akademi University, Turku, Finland
- Turku Bioscience Centre, Åbo Akademi University and University of Turku, Turku, Finland
| |
Collapse
|
20
|
Tezuka-Kagajo M, Maekawa M, Ogawa A, Hatta Y, Ishii E, Eguchi M, Higashiyama S. Development of Human CBF1-Targeting Single-Stranded DNA Aptamers with Antiangiogenic Activity In Vitro. Nucleic Acid Ther 2020; 30:365-378. [DOI: 10.1089/nat.2020.0875] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Affiliation(s)
- Mari Tezuka-Kagajo
- Department of Biochemistry and Molecular Genetics and Ehime University Graduate School of Medicine, Toon, Japan
- Department of Pediatrics, Ehime University Graduate School of Medicine, Toon, Japan
| | - Masashi Maekawa
- Department of Biochemistry and Molecular Genetics and Ehime University Graduate School of Medicine, Toon, Japan
- Division of Cell Growth and Tumor Regulation, Proteo-Science Center, Ehime University, Toon, Japan
| | - Atsushi Ogawa
- Division of Biomolecular Engineering, Proteo-Science Center, Ehime University, Matsuyama, Japan
| | - Yoshiko Hatta
- Division of Biomolecular Engineering, Proteo-Science Center, Ehime University, Matsuyama, Japan
| | - Eiichi Ishii
- Department of Pediatrics, Ehime University Graduate School of Medicine, Toon, Japan
| | - Mariko Eguchi
- Department of Pediatrics, Ehime University Graduate School of Medicine, Toon, Japan
| | - Shigeki Higashiyama
- Department of Biochemistry and Molecular Genetics and Ehime University Graduate School of Medicine, Toon, Japan
- Division of Cell Growth and Tumor Regulation, Proteo-Science Center, Ehime University, Toon, Japan
| |
Collapse
|
21
|
Guo Q, Huang F, Qing Y, Feng S, Xiao X, Wang Y, Liang M, Wang T, Mitch WE, Cheng J. Decreased Jagged1 expression in vascular smooth muscle cells delays endothelial regeneration in arteriovenous graft. Cardiovasc Res 2020; 116:2142-2155. [PMID: 31913453 DOI: 10.1093/cvr/cvz333] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 10/10/2019] [Accepted: 01/03/2020] [Indexed: 11/12/2022] Open
Abstract
AIMS It is well-established that endothelial dysfunction promotes activation of vascular smooth muscle cell (VSMC). Whether decreased accumulation of VSMCs affects endothelial regeneration and functions in arteriovenous graft (AVG) remodelling has not been studied. We sought to identify mechanisms by which the Notch ligand, Jagged1, in VSMCs regulates endothelial cell (EC) functions in AVGs. METHODS AND RESULTS AVGs were created in transgenic mice bearing VSMC-specific knockout (KO) or overexpression of Jagged1. VSMC migration, EC regeneration, and its barrier functions as well as AVG remodelling were evaluated. Jagged1 expression was induced in VSMCs of neointima in the AVGs. Jagged1 KO in VSMCs inhibited the accumulation of extracellular matrix as well as VSMC migration. Fewer α-SMA-positive VSMCs were found in AVGs created in VSMC-specific Jagged1 KO mice (VSMCJagged1 KO mice) vs. in WT mice. Decreased VSMCs in AVGs were associated with deterioration of EC functions. In AVGs created in transgenic mice bearing Jagged1 KO in VSMCs exhibited delayed EC regeneration and impaired EC barrier function. Barrier dysfunction of ECs increased inflammatory cell infiltration and dysregulation of AVG remodelling and arterialization. The increased expression of IL-1β in macrophages was associated with expression of adhesion markers in ECs in AVGs created in VSMCJagged1 KO mice. In contrast, AVGs created in mice with overexpression of Jagged1 in VSMCs exhibited improved EC regeneration plus decreased macrophage infiltration. This led to AVG remodelling and arterialization. In co-cultures of ECs and VSMCs, Jagged1 deficiency in VSMCs suppressed N-cadherin and integrin β3 expression in ECs. Inhibition of integrin β3 activation delayed EC spreading and migration. Notably, Jagged1 overexpression in VSMCs or treatment with recombinant Jagged1 stimulated the expression of N-cadherin and integrin β3 in ECs. Jagged1-induced responses were blocked by inhibition of Notch signalling. CONCLUSIONS Jagged1 expression in VSMCs maintains EC barrier functions and blocks infiltration of macrophages. These responses promote remodelling and arterialization of AVGs.
Collapse
Affiliation(s)
- Qunying Guo
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, China.,Section of Nephrology, Department of Medicine, Selzman Institute for Kidney Health, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Fengzhang Huang
- Section of Nephrology, Department of Medicine, Selzman Institute for Kidney Health, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Ying Qing
- Section of Nephrology, Department of Medicine, Selzman Institute for Kidney Health, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Shaozhen Feng
- Section of Nephrology, Department of Medicine, Selzman Institute for Kidney Health, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Xiaoguang Xiao
- Section of Nephrology, Department of Medicine, Selzman Institute for Kidney Health, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Yun Wang
- Section of Nephrology, Department of Medicine, Selzman Institute for Kidney Health, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Ming Liang
- Section of Nephrology, Department of Medicine, Selzman Institute for Kidney Health, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Tao Wang
- Duncan Cancer Center, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - William E Mitch
- Section of Nephrology, Department of Medicine, Selzman Institute for Kidney Health, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Jizhong Cheng
- Section of Nephrology, Department of Medicine, Selzman Institute for Kidney Health, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| |
Collapse
|
22
|
Di Marco B, Crouch EE, Shah B, Duman C, Paredes MF, Ruiz de Almodovar C, Huang EJ, Alfonso J. Reciprocal Interaction between Vascular Filopodia and Neural Stem Cells Shapes Neurogenesis in the Ventral Telencephalon. Cell Rep 2020; 33:108256. [PMID: 33053356 DOI: 10.1016/j.celrep.2020.108256] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 07/30/2020] [Accepted: 09/18/2020] [Indexed: 02/06/2023] Open
Abstract
Angiogenesis and neurogenesis are tightly coupled during embryonic brain development. However, little is known about how these two processes interact. We show that nascent blood vessels actively contact dividing neural stem cells by endothelial filopodia in the ventricular zone (VZ) of the murine ventral telencephalon; this association is conserved in the human ventral VZ. Using mouse mutants with altered vascular filopodia density, we show that this interaction leads to prolonged cell cycle of apical neural progenitors (ANPs) and favors early neuronal differentiation. Interestingly, pharmacological experiments reveal that ANPs induce vascular filopodia formation by upregulating vascular endothelial growth factor (VEGF)-A in a cell-cycle-dependent manner. This mutual relationship between vascular filopodia and ANPs works as a self-regulatory system that senses ANP proliferation rates and rapidly adjusts neuronal production levels. Our findings indicate a function of vascular filopodia in fine-tuning neural stem cell behavior, which is the basis for proper brain development.
Collapse
Affiliation(s)
- Barbara Di Marco
- Department of Clinical Neurobiology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
| | - Elizabeth E Crouch
- Department of Pediatrics, University of California San Francisco, 505 Parnassus Avenue, San Francisco, CA 94143, USA
| | - Bhavin Shah
- European Center for Angioscience, Medicine Faculty Mannheim and Heidelberg University, Ludolf-Krehl-Straße 13-17, 68167 Mannheim, Germany; Institute for Transfusion Medicine and Immunology, Medicine Faculty Mannheim and Heidelberg University, Friedrich-Ebert-Straße 107, 68167 Mannheim, Germany
| | - Ceren Duman
- Department of Clinical Neurobiology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
| | - Mercedes F Paredes
- Department of Neurology, University of California San Francisco, 505 Parnassus Avenue, San Francisco, CA 94143, USA
| | - Carmen Ruiz de Almodovar
- European Center for Angioscience, Medicine Faculty Mannheim and Heidelberg University, Ludolf-Krehl-Straße 13-17, 68167 Mannheim, Germany; Institute for Transfusion Medicine and Immunology, Medicine Faculty Mannheim and Heidelberg University, Friedrich-Ebert-Straße 107, 68167 Mannheim, Germany
| | - Eric J Huang
- Department of Pathology, University of California San Francisco, 505 Parnassus Avenue, San Francisco, CA 94143, USA
| | - Julieta Alfonso
- Department of Clinical Neurobiology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany.
| |
Collapse
|
23
|
Liu X, Shen S, Zhu L, Su R, Zheng J, Ruan X, Shao L, Wang D, Yang C, Liu Y. SRSF10 inhibits biogenesis of circ-ATXN1 to regulate glioma angiogenesis via miR-526b-3p/MMP2 pathway. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2020; 39:121. [PMID: 32600379 PMCID: PMC7325155 DOI: 10.1186/s13046-020-01625-8] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 06/18/2020] [Indexed: 12/13/2022]
Abstract
Background Angiogenesis plays an important role in the progress of glioma. RNA-binding proteins (RBPs) and circular RNAs (circRNAs), dysregulated in various tumors, have been verified to mediate diverse biological behaviors including angiogenesis. Methods Quantitative real-time PCR (qRT-PCR) and western blot were performed to detect the expression of SRSF10, circ-ATXN1, miR-526b-3p, and MMP2/VEGFA. The potential function of SRSF10/circ-ATXN1/miR-526b-3p axis in glioma-associated endothelial cells (GECs) angiogenesis was further studied. Results SRSF10 and circ-ATXN1 were significantly upregulated in GECs compared with astrocyte-associated endothelial cells (AECs). Knockdown of SRSF10 or circ-ATXN1 significantly inhibited cell viability, migration and tube formation of GECs where knockdown of SRSF10 exerted its function by inhibiting the formation of circ-ATXN1. Moreover, the combined knockdown of SRSF10 and circ-ATXN1 significantly enhanced the inhibitory effects on cell viability, migration and tube formation of GECs, compared with knockdown of SRSF10 and circ-ATXN1, respectively. MiR-526b-3p was downregulated in GECs. Circ-ATXN1 functionally targeted miR-526b-3p in an RNA-induced silencing complex. Up-regulation of miR-526b-3p inhibited cell viability, migration and tube formation of GECs. Furthermore, miR-526b-3p affected the angiogenesis of GECs via negatively regulating the expression of MMP2/VEGFA. Conclusion SRSF10/circ-ATXN1/miR-526b-3p axis played a crucial role in regulating the angiogenesis of GECs. The above findings provided new targets for anti-angiogenic therapy in glioma.
Collapse
Affiliation(s)
- Xiaobai Liu
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang, 110004, China.,Liaoning Clinical Medical Research Center in Nervous System Disease, Shenyang, 110004, China.,Key Laboratory of Neuro-Oncology in Liaoning Province, Shenyang, 110004, China
| | - Shuyuan Shen
- Department of Neurobiology, School of life Sciences, China Medical University, Shenyang, 110122, China.,Key Laboratory of Cell Biology, Ministry of Public Health of China, China Medical University, Shenyang, 110122, China.,Key Laboratory of Medical Cell Biology, Ministry of Education of China, China Medical University, Shenyang, 110122, China
| | - Lu Zhu
- Department of Neurobiology, School of life Sciences, China Medical University, Shenyang, 110122, China.,Key Laboratory of Cell Biology, Ministry of Public Health of China, China Medical University, Shenyang, 110122, China.,Key Laboratory of Medical Cell Biology, Ministry of Education of China, China Medical University, Shenyang, 110122, China
| | - Rui Su
- Department of Neurobiology, School of life Sciences, China Medical University, Shenyang, 110122, China.,Key Laboratory of Cell Biology, Ministry of Public Health of China, China Medical University, Shenyang, 110122, China.,Key Laboratory of Medical Cell Biology, Ministry of Education of China, China Medical University, Shenyang, 110122, China
| | - Jian Zheng
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang, 110004, China.,Liaoning Clinical Medical Research Center in Nervous System Disease, Shenyang, 110004, China.,Key Laboratory of Neuro-Oncology in Liaoning Province, Shenyang, 110004, China
| | - Xuelei Ruan
- Department of Neurobiology, School of life Sciences, China Medical University, Shenyang, 110122, China.,Key Laboratory of Cell Biology, Ministry of Public Health of China, China Medical University, Shenyang, 110122, China.,Key Laboratory of Medical Cell Biology, Ministry of Education of China, China Medical University, Shenyang, 110122, China
| | - Lianqi Shao
- Department of Neurobiology, School of life Sciences, China Medical University, Shenyang, 110122, China.,Key Laboratory of Cell Biology, Ministry of Public Health of China, China Medical University, Shenyang, 110122, China.,Key Laboratory of Medical Cell Biology, Ministry of Education of China, China Medical University, Shenyang, 110122, China
| | - Di Wang
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang, 110004, China.,Liaoning Clinical Medical Research Center in Nervous System Disease, Shenyang, 110004, China.,Key Laboratory of Neuro-Oncology in Liaoning Province, Shenyang, 110004, China
| | - Chunqing Yang
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang, 110004, China.,Liaoning Clinical Medical Research Center in Nervous System Disease, Shenyang, 110004, China.,Key Laboratory of Neuro-Oncology in Liaoning Province, Shenyang, 110004, China
| | - Yunhui Liu
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang, 110004, China. .,Liaoning Clinical Medical Research Center in Nervous System Disease, Shenyang, 110004, China. .,Key Laboratory of Neuro-Oncology in Liaoning Province, Shenyang, 110004, China.
| |
Collapse
|
24
|
Weighted gene co-expression network analysis of chronic kidney disease and hemodialysis patients. Meta Gene 2020. [DOI: 10.1016/j.mgene.2020.100689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
|
25
|
Abstract
Appropriate therapeutic modulation of endothelial proliferation and sprouting is essential for the effective inhibition of angiogenesis in cancer or its induction in cardiovascular disease. The current view is that an increase in growth factor concentration, and the resulting mitogenic activity, increases both endothelial proliferation and sprouting. Here, we modulate mitogenic stimuli in different vascular contexts by interfering with the function of the VEGF and Notch signalling pathways at high spatiotemporal resolution in vivo. Contrary to the prevailing view, our results indicate that high mitogenic stimulation induced by VEGF, or Notch inhibition, arrests the proliferation of angiogenic vessels. This is due to the existence of a bell-shaped dose-response to VEGF and MAPK activity that is counteracted by Notch and p21, determining whether endothelial cells sprout, proliferate, or become quiescent. The identified mechanism should be considered to achieve optimal therapeutic modulation of angiogenesis. High mitogenic stimuli have been suggested to promote endothelial cell proliferation and sprouting during angiogenesis. Here Pontes-Quero et al., by interfering with levels of VEGF and Notch signalling in single endothelial cells in vivo, find that high mitogenic stimuli instead arrest angiogenesis due to a bell-shaped dose-response to VEGF and MAPK activity that is counteracted by Notch and p21.
Collapse
|
26
|
NOTCH1 signaling induces pathological vascular permeability in diabetic retinopathy. Proc Natl Acad Sci U S A 2019; 116:4538-4547. [PMID: 30787185 DOI: 10.1073/pnas.1814711116] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Diabetic macular edema is a major complication of diabetes resulting in loss of central vision. Although heightened vessel leakiness has been linked to glial and neuronal-derived factors, relatively little is known on the mechanisms by which mature endothelial cells exit from a quiescent state and compromise barrier function. Here we report that endothelial NOTCH1 signaling in mature diabetic retinas contributes to increased vascular permeability. By providing both human and mouse data, we show that NOTCH1 ligands JAGGED1 and DELTA LIKE-4 are up-regulated secondary to hyperglycemia and activate both canonical and rapid noncanonical NOTCH1 pathways that ultimately disrupt endothelial adherens junctions in diabetic retinas by causing dissociation of vascular endothelial-cadherin from β-catenin. We further demonstrate that neutralization of NOTCH1 ligands prevents diabetes-induced retinal edema. Collectively, these results identify a fundamental process in diabetes-mediated vascular permeability and provide translational rational for targeting the NOTCH pathway (primarily JAGGED1) in conditions characterized by compromised vascular barrier function.
Collapse
|
27
|
Liu Y, Zheng Q, He G, Zhang M, Yan X, Yang Z, Zhang P, Wang L, Liu J, Liang L, Han H. Transmembrane protein 215 promotes angiogenesis by maintaining endothelial cell survival. J Cell Physiol 2018; 234:9525-9534. [PMID: 30370660 PMCID: PMC6587792 DOI: 10.1002/jcp.27641] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 10/02/2018] [Indexed: 01/08/2023]
Abstract
Sprouting angiogenesis is a major form of neovascularization of tissues suffering from hypoxia and other related stress. Endothelial cells (ECs) undergo proliferation, differentiation, programmed death, and migration during angiogenic sprouting, but the underlying molecular mechanisms regulating ECs in angiogenesis have been incompletely elucidated. Here we report that the transmembrane protein 215 (TMEM215) is involved in angiogenesis by regulating EC survival. The murine TMEM215 gene, which possesses two transcriptional starting sites as determined by 5′‐rapid amplification of complementary DNA (cDNA) ends (RACE), encodes a two‐pass TMEM. The TMEM215 transcripts were detected in ECs in addition to other tissues by quantitative reverse transcription‐polymerase chain reaction. Immunofluorescence showed that TMEM215 was expressed in the vasculature in retina, liver, and tumor, and colocalized with EC markers. We show that knockdown of TMEM215 in ECs induced strong cell death of ECs in vitro without affecting cell proliferation and migration, suggesting that TMEM215 was required for EC survival. Downregulation of TMEM215 expression compromised lumen formation and sprouting capacities of ECs in vitro. Moreover, intravitreous injection of TMEM215 small interfering RNA resulted in delayed and abnormal development of retinal vasculature with poor perfusion. These results identified TMEM215 as a novel molecule involved in angiogenesis by regulating the survival of ECs.
Collapse
Affiliation(s)
- Yuan Liu
- Center for Mitochondrial Biology & Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China.,State Key Laboratory of Cancer Biology, Department of Medical Genetics and Developmental Biology, Fourth Military Medical University, Xi'an, China
| | - Qijun Zheng
- Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, China
| | - Guangbin He
- Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, China
| | - Mei Zhang
- Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, China
| | - Xianchun Yan
- State Key Laboratory of Cancer Biology, Department of Medical Genetics and Developmental Biology, Fourth Military Medical University, Xi'an, China.,Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, China
| | - Ziyan Yang
- State Key Laboratory of Cancer Biology, Department of Medical Genetics and Developmental Biology, Fourth Military Medical University, Xi'an, China.,Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, China
| | - Peiran Zhang
- Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, China
| | - Lili Wang
- Key Laboratory of Synthetic and Natural Functional Molecular Chemistry of Ministry of Education, Shaanxi Key Laboratory of Modern Separation Science, Institute of Modern Separation Science, Northwest University, Xi'an, China
| | - Jiankang Liu
- Center for Mitochondrial Biology & Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - Liang Liang
- State Key Laboratory of Cancer Biology, Department of Medical Genetics and Developmental Biology, Fourth Military Medical University, Xi'an, China
| | - Hua Han
- State Key Laboratory of Cancer Biology, Department of Medical Genetics and Developmental Biology, Fourth Military Medical University, Xi'an, China.,Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, China
| |
Collapse
|
28
|
The role of the Notch signaling pathway in liver injury and repair. JOURNAL OF BIO-X RESEARCH 2018. [DOI: 10.1097/jbr.0000000000000014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
|
29
|
The Role of Dll4/Notch Signaling in Normal and Pathological Ocular Angiogenesis: Dll4 Controls Blood Vessel Sprouting and Vessel Remodeling in Normal and Pathological Conditions. J Ophthalmol 2018; 2018:3565292. [PMID: 30116629 PMCID: PMC6079472 DOI: 10.1155/2018/3565292] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 06/04/2018] [Indexed: 12/16/2022] Open
Abstract
Background Retina is the highest oxygen-demanding and vascularized tissue in the body. Retinal development and function require proper vascularization and blood vessel function and integrity. Dll4 is most prominently expressed in the endothelium of angiogenic blood vessels and in quiescent arteries and capillaries in all tissues and organs of the mammalian species, and it is the key regulator of blood vessel sprouting. Results Dll4 is a transmembrane protein that acts as a ligand for Notch receptors 1 and 4. Genetic deletion of Dll4 causes severe abnormalities in embryonic and postnatal vascular development. Deletion of even a single Dll4 allele results in almost complete embryonic lethality due to severe vascular abnormalities, the phenomenon called haploinsufficiency indicating the critical role of Dll4/Notch in vascular development. Dll4/Notch pathway interplays at multiple levels with other signaling pathways including VEGF, Wnt/Fzd, and genes controlling vascular toning. Multiple studies of the effects of Dll4 inhibition were performed in the developing retina to elucidate the key functions of Dll4 in normal and pathological angiogenesis. Several genetic approaches and therapeutic molecules were tested to evaluate the biological and therapeutic effects of acute and prolonged Dll4 inhibition in the eye and oncology. Conclusions All current studies demonstrated that Dll4 controls blood vessel sprouting, growth, and remodeling in normal and pathological conditions as well as arterial-venous differentiation. Genetic and therapeutic Dll4 modulation studies show that Dll4 inhibition can promote blood vessel sprouting and might be useful to stimulate vessel growth in the ischemic retina and Dll4 is the key modulator of the postangiogenic vascular remodeling that ultimately defines vascular patterning.
Collapse
|
30
|
SNAI1, an endothelial–mesenchymal transition transcription factor, promotes the early phase of ocular neovascularization. Angiogenesis 2018; 21:635-652. [DOI: 10.1007/s10456-018-9614-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Accepted: 04/07/2018] [Indexed: 12/27/2022]
|
31
|
Control of Blood Vessel Formation by Notch Signaling. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1066:319-338. [PMID: 30030834 DOI: 10.1007/978-3-319-89512-3_16] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Blood vessels span throughout the body to nourish tissue cells and to provide gateways for immune surveillance. Endothelial cells that line capillaries have the remarkable capacity to be quiescent for years but to switch rapidly into the activated state once new blood vessels need to be formed. In addition, endothelial cells generate niches for progenitor and tumor cells and provide organ-specific paracrine (angiocrine) factors that control organ development and regeneration, maintenance of homeostasis and tumor progression. Recent data indicate a pivotal role for blood vessels in responding to metabolic changes and that endothelial cell metabolism is a novel regulator of angiogenesis. The Notch pathway is the central signaling mode that cooperates with VEGF, WNT, BMP, TGF-β, angiopoietin signaling and cell metabolism to orchestrate angiogenesis, tip/stalk cell selection and arteriovenous specification. Here, we summarize the current knowledge and implications regarding the complex roles of Notch signaling during physiological and tumor angiogenesis, the dynamic nature of tip/stalk cell selection in the nascent vessel sprout and arteriovenous differentiation. Furthermore, we shed light on recent work on endothelial cell metabolism, perfusion-independent angiocrine functions of endothelial cells in organ-specific vascular beds and how manipulation of Notch signaling may be used to target the tumor vasculature.
Collapse
|
32
|
Azoitei N, Cobbaut M, Becher A, Van Lint J, Seufferlein T. Protein kinase D2: a versatile player in cancer biology. Oncogene 2017; 37:1263-1278. [PMID: 29259300 DOI: 10.1038/s41388-017-0052-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 09/14/2017] [Accepted: 09/15/2017] [Indexed: 12/23/2022]
Abstract
Protein kinase D2 (PKD2) is a serine/threonine kinase that belongs to the PKD family of calcium-calmodulin kinases, which comprises three isoforms: PKD1, PKD2, and PKD3. PKD2 is activated by many stimuli including growth factors, phorbol esters, and G-protein-coupled receptor agonists. PKD2 participation to uncontrolled growth, survival, neovascularization, metastasis, and invasion has been documented in various tumor types including pancreatic, colorectal, gastric, hepatic, lung, prostate, and breast cancer, as well as glioma multiforme and leukemia. This review discusses the versatile functions of PKD2 from the perspective of cancer hallmarks as described by Hanahan and Weinberg. The PKD2 status, signaling pathways affected in different tumor types and the molecular mechanisms that lead to tumorigenesis and tumor progression are presented. The latest developments of small-molecule inhibitors selective for PKD/PKD2, as well as the need for further chemotherapies that prevent, slow down, or eliminate tumors are also discussed in this review.
Collapse
Affiliation(s)
- Ninel Azoitei
- Center for Internal Medicine I, University of Ulm, Ulm, Germany.
| | - Mathias Cobbaut
- Laboratory for Protein Phosphorylation and Proteomics, Department of Cellular and Molecular Medicine, Leuven Cancer Institute, KU Leuven, Leuven, Belgium
| | | | - Johan Van Lint
- Laboratory for Protein Phosphorylation and Proteomics, Department of Cellular and Molecular Medicine, Leuven Cancer Institute, KU Leuven, Leuven, Belgium
| | | |
Collapse
|
33
|
Mitroi AF, Aschie M, Apostol A, Brinzan C, Cozaru G, Mitroi AN. A boy with 13.34-Mb interstitial deletion of chromosome 4p15: A new case report and review of the literature. Medicine (Baltimore) 2017; 96:e9301. [PMID: 29390495 PMCID: PMC5758197 DOI: 10.1097/md.0000000000009301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
RATIONALE To date, >40 cases have been described with interstitial deletions involving the 4p15 region. PATIENT CONCERNS AND DIAGNOSIS We report a case of a 3-year-old boy with an interstitial de novo deletion of approximately 13.34 Mb in 4p15.1-15.31 having mild developmental delay and multiple minor congenital abnormalities. LESSONS This case presents a clinical manifestation that is similar but not identical to other reported cases. In this report, we have provided a detailed description of a 3-year-old patient with an interstitial 4p deletion and mildly affected phenotype. We discuss the possible involvement of SLIT2, KCNIP4, and LGI2 in cortical development and RBPJ in skeletal abnormalities.
Collapse
Affiliation(s)
- Anca Florentina Mitroi
- Department of Pathology, Emergency Clinical County Hospital of Constanta, Romania
- CEDMOG Center, “Ovidius” University of Constanta, Romania
| | - Mariana Aschie
- Department of Pathology, Emergency Clinical County Hospital of Constanta, Romania
- CEDMOG Center, “Ovidius” University of Constanta, Romania
- Faculty of Medicine, “Ovidius” University of Constanta, Romania
| | - Adriana Apostol
- Department of Pediatrics, Emergency Clinical County Hospital of Constanta, Romania
| | - Costel Brinzan
- Department of Pathology, Emergency Clinical County Hospital of Constanta, Romania
| | - Georgeta Cozaru
- Department of Pathology, Emergency Clinical County Hospital of Constanta, Romania
- CEDMOG Center, “Ovidius” University of Constanta, Romania
| | | |
Collapse
|
34
|
|
35
|
The endothelial transcription factor ERG mediates Angiopoietin-1-dependent control of Notch signalling and vascular stability. Nat Commun 2017; 8:16002. [PMID: 28695891 PMCID: PMC5508205 DOI: 10.1038/ncomms16002] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Accepted: 05/17/2017] [Indexed: 02/06/2023] Open
Abstract
Notch and Angiopoietin-1 (Ang1)/Tie2 pathways are crucial for vascular maturation and stability. Here we identify the transcription factor ERG as a key regulator of endothelial Notch signalling. We show that ERG controls the balance between Notch ligands by driving Delta-like ligand 4 (Dll4) while repressing Jagged1 (Jag1) expression. In vivo, this regulation occurs selectively in the maturing plexus of the mouse developing retina, where Ang1/Tie2 signalling is active. We find that ERG mediates Ang1-dependent regulation of Notch ligands and is required for the stabilizing effects of Ang1 in vivo. We show that Ang1 induces ERG phosphorylation in a phosphoinositide 3-kinase (PI3K)/Akt-dependent manner, resulting in ERG enrichment at Dll4 promoter and multiple enhancers. Finally, we demonstrate that ERG directly interacts with Notch intracellular domain (NICD) and β-catenin and is required for Ang1-dependent β-catenin recruitment at the Dll4 locus. We propose that ERG coordinates Ang1, β-catenin and Notch signalling to promote vascular stability.
Collapse
|
36
|
Wang H, Xia Y, Fu S, Wang W, Xie C, Zhang Y, Gong F. Notch4 Signaling Pathway of Endothelial Progenitor Cells in a Kawasaki Disease Model Induced by Lactobacillus casei Cell Wall Extract. J Vasc Res 2016; 53:340-348. [PMID: 28013300 DOI: 10.1159/000449061] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Accepted: 08/04/2016] [Indexed: 11/19/2022] Open
Abstract
The Notch4 signaling pathway of endothelial progenitor cells (EPCs) may play a crucial role in Kawasaki disease (KD). We investigated the proliferation, adhesion, migration, angiogenesis, and expression levels of Notch4, recombination signal-binding protein-Jκ (RBP-Jκ), P-selectin, and vascular cell adhesion molecule-1 (VCAM-1) of bone marrow (BM) EPCs in a KD model induced by Lactobacillus casei cell wall extract. The numbers of BM EPCs decreased significantly in the KD models. The Notch4 expression level on the EPC surface was higher in the KD models than in the controls. The proliferative, adhesive, migratory, and angiogenic properties, and double immunofluorescence-binding rate of BM EPCs were significantly impaired in the KD models. The levels of Notch4 and P-selectin mRNA were lower in the KD models than in the controls on day 3. The RBP-Jκ mRNA levels were lower in the KD models than in the controls on days 3 and 7. The levels of RBP-Jκ and vascular endothelial growth factor receptor-2 proteins decreased in the early stage. In conclusion, the BM EPC functions and bioactivities in the KD models were impaired, and the Notch4 signaling pathway is associated with KD.
Collapse
Affiliation(s)
- Huafeng Wang
- The Children's Hospital of Zhejiang University School of Medicine, Hangzhou, PR China
| | | | | | | | | | | | | |
Collapse
|
37
|
Jagged-1 Signaling in the Bone Marrow Microenvironment Promotes Endothelial Progenitor Cell Expansion and Commitment of CD133+ Human Cord Blood Cells for Postnatal Vasculogenesis. PLoS One 2016; 11:e0166660. [PMID: 27846321 PMCID: PMC5112804 DOI: 10.1371/journal.pone.0166660] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 11/01/2016] [Indexed: 01/23/2023] Open
Abstract
Notch signaling is involved in cell fate decisions during murine vascular development and hematopoiesis in the microenvironment of bone marrow. To investigate the close relationship between hematopoietic stem cells and human endothelial progenitor cells (EPCs) in the bone marrow niche, we examined the effects of Notch signals [Jagged-1 and Delta-like ligand (Dll)-1] on the proliferation and differentiation of human CD133+ cell-derived EPCs. We established stromal systems using HESS-5 murine bone marrow cells transfected with human Jagged-1 (hJagged-1) or human Dll-1 (hDll-1). CD133+ cord blood cells were co-cultured with the stromal cells for 7 days, and then their proliferation, differentiation, and EPC colony formation was evaluated. We found that hJagged-1 induced the proliferation and differentiation of CD133+ cord blood EPCs. In contrast, hDll-1 had little effect. CD133+ cells stimulated by hJagged-1 differentiated into CD31+/KDR+ cells, expressed vascular endothelial growth factor-A, and showed enhanced EPC colony formation compared with CD133+ cells stimulated by hDll-1. To evaluate the angiogenic properties of hJagged-1- and hDll-1-stimulated EPCs in vivo, we transplanted these cells into the ischemic hindlimbs of nude mice. Transplantation of EPCs stimulated by hJagged-1, but not hDll-1, increased regional blood flow and capillary density in ischemic hindlimb muscles. This is the first study to show that human Notch signaling influences EPC proliferation and differentiation in the bone marrow microenvironment. Human Jagged-1 induced the proliferation and differentiation of CD133+ cord blood progenitors compared with hDll-1. Thus, hJagged-1 signaling in the bone marrow niche may be used to expand EPCs for therapeutic angiogenesis.
Collapse
|
38
|
Ramo K, Sugamura K, Craige S, Keaney JF, Davis RJ. Suppression of ischemia in arterial occlusive disease by JNK-promoted native collateral artery development. eLife 2016; 5:e18414. [PMID: 27504807 PMCID: PMC4999312 DOI: 10.7554/elife.18414] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Accepted: 08/08/2016] [Indexed: 12/29/2022] Open
Abstract
Arterial occlusive diseases are major causes of morbidity and mortality. Blood flow to the affected tissue must be restored quickly if viability and function are to be preserved. We report that disruption of the mixed-lineage protein kinase (MLK) - cJun NH2-terminal kinase (JNK) signaling pathway in endothelial cells causes severe blockade of blood flow and failure to recover in the murine femoral artery ligation model of hindlimb ischemia. We show that the MLK-JNK pathway is required for the formation of native collateral arteries that can restore circulation following arterial occlusion. Disruption of the MLK-JNK pathway causes decreased Dll4/Notch signaling, excessive sprouting angiogenesis, and defects in developmental vascular morphogenesis. Our analysis demonstrates that the MLK-JNK signaling pathway is a key regulatory mechanism that protects against ischemia in arterial occlusive disease.
Collapse
Affiliation(s)
- Kasmir Ramo
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, United States
| | - Koichi Sugamura
- Cardiovascular Medicine Division, University of Massachusetts Medical School, Worcester, United States
- Department of Medicine, University of Massachusetts Medical School, Worcester, United States
| | - Siobhan Craige
- Cardiovascular Medicine Division, University of Massachusetts Medical School, Worcester, United States
- Department of Medicine, University of Massachusetts Medical School, Worcester, United States
| | - John F Keaney
- Cardiovascular Medicine Division, University of Massachusetts Medical School, Worcester, United States
- Department of Medicine, University of Massachusetts Medical School, Worcester, United States
| | - Roger J Davis
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, United States
- Howard Hughes Medical Institute, Worcester, United States
| |
Collapse
|
39
|
Myeloid-Specific Blockade of Notch Signaling Attenuates Choroidal Neovascularization through Compromised Macrophage Infiltration and Polarization in Mice. Sci Rep 2016; 6:28617. [PMID: 27339903 PMCID: PMC4919651 DOI: 10.1038/srep28617] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 06/06/2016] [Indexed: 11/09/2022] Open
Abstract
Macrophages have been recognized as an important inflammatory component in choroidal neovascularization (CNV). However, it is unclear how these cells are activated and polarized, how they affect angiogenesis and what the underlining mechanisms are during CNV. Notch signaling has been implicated in macrophage activation. Previously we have shown that inducible disruption of RBP-J, the critical transcription factor of Notch signaling, in adult mice results in enhanced CNV, but it is unclear what is the role of macrophage-specific Notch signaling in the development of CNV. In the current study, by using the myeloid specific RBP-J knockout mouse model combined with the laser-induced CNV model, we show that disruption of Notch signaling in macrophages displayed attenuated CNV growth, reduced macrophage infiltration and activation, and alleviated angiogenic response after laser induction. The inhibition of CNV occurred with reduced expression of VEGF and TNF-α in infiltrating inflammatory macrophages in myeloid specific RBP-J knockout mice. These changes might result in direct inhibition of EC lumen formation, as shown in an in vitro study. Therefore, clinical intervention of Notch signaling in CNV needs to pinpoint myeloid lineage to avoid the counteractive effects of global inhibition.
Collapse
|
40
|
Lu J, Xia Y, Chen K, Zheng Y, Wang J, Lu W, Yin Q, Wang F, Zhou Y, Guo C. Oncogenic role of the Notch pathway in primary liver cancer. Oncol Lett 2016; 12:3-10. [PMID: 27347091 DOI: 10.3892/ol.2016.4609] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2015] [Accepted: 04/08/2016] [Indexed: 02/07/2023] Open
Abstract
Primary liver cancer, which includes hepatocellular carcinoma (HCC), intrahepatic cholangiocarcinoma (ICC) and fibrolamellar HCC, is one of the most common malignancies and the third leading cause of cancer-associated mortality, worldwide. Despite the development of novel therapies, the prognosis of liver cancer patients remains extremely poor. Thus, investigation of the genetic background and molecular mechanisms underlying the development and progression of this disease has gained significant attention. The Notch signaling pathway is a crucial determinant of cell fate during development and disease in several organs. In the liver, Notch signaling is involved in biliary tree development and tubulogenesis, and is also significant in the development of HCC and ICC. These findings suggest that the modulation of Notch pathway activity may have therapeutic relevance. The present review summarizes Notch signaling during HCC and ICC development and discusses the findings of recent studies regarding Notch expression, which reveal novel insights into its function in liver cancer progression.
Collapse
Affiliation(s)
- Jie Lu
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University, School of Medicine, Shanghai 200072, P.R. China
| | - Yujing Xia
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University, School of Medicine, Shanghai 200072, P.R. China
| | - Kan Chen
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University, School of Medicine, Shanghai 200072, P.R. China
| | - Yuanyuan Zheng
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University, School of Medicine, Shanghai 200072, P.R. China
| | - Jianrong Wang
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University, School of Medicine, Shanghai 200072, P.R. China; Department of Gastroenterology, The First Clinical Medical College of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Wenxia Lu
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University, School of Medicine, Shanghai 200072, P.R. China; Department of Gastroenterology, The First Clinical Medical College of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Qin Yin
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University, School of Medicine, Shanghai 200072, P.R. China; Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Fan Wang
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University, School of Medicine, Shanghai 200072, P.R. China
| | - Yingqun Zhou
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University, School of Medicine, Shanghai 200072, P.R. China
| | - Chuanyong Guo
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University, School of Medicine, Shanghai 200072, P.R. China
| |
Collapse
|
41
|
Gao X, Wang Y, Hou HY, Lyu Y, Wang HY, Yao LB, Zhang J, Cao F, Wang YS. In vivo bioluminescence imaging of hyperglycemia exacerbating stem cells on choroidal neovascularization in mice. Int J Ophthalmol 2016; 9:519-27. [PMID: 27162722 DOI: 10.18240/ijo.2016.04.07] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Accepted: 11/20/2015] [Indexed: 12/11/2022] Open
Abstract
AIM To investigate the influence of hyperglycemia on the severity of choroidal neovascularization (CNV), especially the involvement of bone marrow-derived cells (BMCs) and underlying mechanisms. METHODS BMCs from firefly luciferase (Fluc)/green fluorescent protein (GFP) double transgenic mice were transplanted into C57BL/6J wide-type mice. The recipient mice were injected intraperitoneally with streptozotocin (STZ) daily for 5 consecutive days to induce diabetes mellitus (DM), followed by CNV laser photocoagulation. The BMCs recruitment in CNV exposed to hyperglycemia was firstly examined in Fluc/GFP chimeric mice by in vivo optical bioluminescence imaging (BLI) and in vitro Fluc assays. The CNV severity was evaluated by H&E staining and choroidal flatmount. The expression of vascular endothelial growth factor (VEGF) and stromal cell derived factor-1 (SDF-1) was detected by Western Blot. RESULTS BLI showed that the BMCs exerted dynamic effects in CNV model in Fluc/GFP chimeric mice exposed to hyperglycemia. The signal intensity of transplanted Fluc(+)GFP(+) BMCs in the DM chimeric mice was significantly higher than that in the control chimeric mice with CNV induction at days 5, 7, 14 and 21 (121861.67±9948.81 vs 144998.33±13787.13 photons/second/cm(2)/sr for control and DM mice, P 5d<0.05; 178791.67±30350.8 vs 240166.67±22605.3, P 7d<0.05; 124176.67±16253.52 vs 196376.67±18556.79, P 14d<0.05; 97951.60±10343.09 vs 119510.00±14383.76, P 21d<0.05), which was consistent with in vitro Fluc assay at day 7 [relative light units of Fluc (RLU1)], 215.00±52.05 vs 707.33±88.65, P<0.05; RLU1/ relative light units of renilla luciferase (RLU2), 0.90±0.17 vs 1.83±0.17, P<0.05]. The CNVs in the DM mice were wider than those in the control group at days 5, 7, 14 and 21 (147.83±17.36 vs 220.33±20.17 µm, P 5d<0.05; 212.17±24.63 vs 326.83±19.49, P 7d<0.05; 163.17±18.24 vs 265.17±20.55, P 14d<0.05; 132.00±10.88 vs 205.33±12.98, P 21d<0.05). The average area of CNV in the DM group was larger at 7d (20688.67±3644.96 vs 32218.00±4132.69 µm(2), P<0.05). The expression of VEGF and SDF-1 was enhanced in the DM mice. CONCLUSION Hyperglycemia promots the vasculogenesis of CNV, especially the contribution of BMCs, which might be triggered by VEGF and SDF-1 production.
Collapse
Affiliation(s)
- Xiang Gao
- Department of Ophthalmology, Xijing Hospital, Eye Institute of Chinese PLA, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Yu Wang
- Department of Ophthalmology, Xijing Hospital, Eye Institute of Chinese PLA, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Hui-Yuan Hou
- Department of Ophthalmology, Xijing Hospital, Eye Institute of Chinese PLA, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Yang Lyu
- Department of Ophthalmology, Xijing Hospital, Eye Institute of Chinese PLA, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Hai-Yan Wang
- Department of Ophthalmology, Xijing Hospital, Eye Institute of Chinese PLA, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Li-Bo Yao
- State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Jian Zhang
- State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Feng Cao
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Yu-Sheng Wang
- Department of Ophthalmology, Xijing Hospital, Eye Institute of Chinese PLA, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| |
Collapse
|
42
|
Digilio MC, Marino B, Baban A, Dallapiccola B. Cardiovascular malformations in Adams-Oliver syndrome. Am J Med Genet A 2016; 167A:1175-7. [PMID: 25885069 DOI: 10.1002/ajmg.a.36764] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2014] [Accepted: 08/14/2014] [Indexed: 01/04/2023]
Affiliation(s)
- M Cristina Digilio
- Medical Genetics and Pediatric Cardiology, Bambino Gesu, Pediatric Hospital, IRCCS, Rome, Italy
| | | | | | | |
Collapse
|
43
|
Bone marrow-derived cells in ocular neovascularization: contribution and mechanisms. Angiogenesis 2016; 19:107-18. [PMID: 26880135 PMCID: PMC4819501 DOI: 10.1007/s10456-016-9497-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2015] [Accepted: 02/02/2016] [Indexed: 01/16/2023]
Abstract
Ocular neovascularization often leads to severe vision loss. The role of bone marrow-derived cells (BMCs) in the development of ocular neovascularization, and its significance, is increasingly being recognized. In this review, we discuss their contribution and the potential mechanisms that mediate the effect of BMCs on the progression of ocular neovascularization. The sequence of events by which BMCs participate in ocular neovascularization can be roughly divided into four phases, i.e., mobilization, migration, adhesion and differentiation. This process is delicately regulated and liable to be affected by multiple factors. Cytokines such as vascular endothelial growth factor, granulocyte colony-stimulating factor and erythropoietin are involved in the mobilization of BMCs. Studies have also demonstrated a key role of cytokines such as stromal cell-derived factor-1, tumor necrosis factor-α, as well as vascular endothelial growth factor, in regulating the migration of BMCs. The adhesion of BMCs is mainly regulated by vascular cell adhesion molecule-1, intercellular adhesion molecule-1 and vascular endothelial cadherin. However, the mechanisms regulating the differentiation of BMCs are largely unknown at present. In addition, BMCs secrete cytokines that interact with the microenvironment of ocular neovascularization; their contribution to ocular neovascularization, especially choroidal neovascularization, can be aggravated by several risk factors. An extensive regulatory network is thought to modulate the role of BMCs in the development of ocular neovascularization. A comprehensive understanding of the involved mechanisms will help in the development of novel therapeutic strategies related to BMCs. In this review, we have limited the discussion to the recent progress in this field, especially the research conducted at our laboratory.
Collapse
|
44
|
Yan XC, Cao J, Liang L, Wang L, Gao F, Yang ZY, Duan JL, Chang TF, Deng SM, Liu Y, Dou GR, Zhang J, Zheng QJ, Zhang P, Han H. miR-342-5p Is a Notch Downstream Molecule and Regulates Multiple Angiogenic Pathways Including Notch, Vascular Endothelial Growth Factor and Transforming Growth Factor β Signaling. J Am Heart Assoc 2016; 5:JAHA.115.003042. [PMID: 26857067 PMCID: PMC4802463 DOI: 10.1161/jaha.115.003042] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Background Endothelial cells (ECs) form blood vessels through angiogenesis that is regulated by coordination of vascular endothelial growth factor (VEGF), Notch, transforming growth factor β, and other signals, but the detailed molecular mechanisms remain unclear. Methods and Results Small RNA sequencing initially identified miR‐342‐5p as a novel downstream molecule of Notch signaling in ECs. Reporter assay, quantitative reverse transcription polymerase chain reaction and Western blot analysis indicated that miR‐342‐5p targeted endoglin and modulated transforming growth factor β signaling by repressing SMAD1/5 phosphorylation in ECs. Transfection of miR‐342‐5p inhibited EC proliferation and lumen formation and reduced angiogenesis in vitro and in vivo, as assayed by using a fibrin beads–based sprouting assay, mouse aortic ring culture, and intravitreal injection of miR‐342‐5p agomir in P3 pups. Moreover, miR‐342‐5p promoted the migration of ECs, accompanied by reduced endothelial markers and increased mesenchymal markers, indicative of increased endothelial–mesenchymal transition. Transfection of endoglin at least partially reversed endothelial–mesenchymal transition induced by miR‐342‐5p. The expression of miR‐342‐5p was upregulated by transforming growth factor β, and inhibition of miR‐342‐5p attenuated the inhibitory effects of transforming growth factor β on lumen formation and sprouting by ECs. In addition, VEGF repressed miR‐342‐5p expression, and transfection of miR‐342‐5p repressed VEGFR2 and VEGFR3 expression and VEGF‐triggered Akt phosphorylation in ECs. miR‐342‐5p repressed angiogenesis in a laser‐induced choroidal neovascularization model in mice, highlighting its clinical potential. Conclusions miR‐342‐5p acts as a multifunctional angiogenic repressor mediating the effects and interaction among angiogenic pathways.
Collapse
Affiliation(s)
- Xian-Chun Yan
- State Key Laboratory of Cancer Biology, Department of Medical Genetics and Developmental Biology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Jing Cao
- State Key Laboratory of Cancer Biology, Department of Medical Genetics and Developmental Biology, Xijing Hospital, Fourth Military Medical University, Xi'an, China Department of Respiratory Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Liang Liang
- State Key Laboratory of Cancer Biology, Department of Medical Genetics and Developmental Biology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Li Wang
- State Key Laboratory of Cancer Biology, Department of Medical Genetics and Developmental Biology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Fang Gao
- State Key Laboratory of Cancer Biology, Department of Medical Genetics and Developmental Biology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Zi-Yan Yang
- State Key Laboratory of Cancer Biology, Department of Medical Genetics and Developmental Biology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Juan-Li Duan
- State Key Laboratory of Cancer Biology, Department of Medical Genetics and Developmental Biology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Tian-Fang Chang
- State Key Laboratory of Cancer Biology, Department of Medical Genetics and Developmental Biology, Xijing Hospital, Fourth Military Medical University, Xi'an, China Department of Ophthalmology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - San-Ming Deng
- State Key Laboratory of Cancer Biology, Department of Medical Genetics and Developmental Biology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Yuan Liu
- State Key Laboratory of Cancer Biology, Department of Medical Genetics and Developmental Biology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Guo-Rui Dou
- Department of Ophthalmology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Jian Zhang
- Department of Respiratory Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Qi-Jun Zheng
- Department of Cardiovascular Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Ping Zhang
- State Key Laboratory of Cancer Biology, Department of Medical Genetics and Developmental Biology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Hua Han
- State Key Laboratory of Cancer Biology, Department of Medical Genetics and Developmental Biology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| |
Collapse
|
45
|
Tian DM, Liang YM, Zhang YQ. Endothelium-targeted human Delta-like 1 enhances the regeneration and homing of human cord blood stem and progenitor cells. J Transl Med 2016; 14:5. [PMID: 26740017 PMCID: PMC4704259 DOI: 10.1186/s12967-015-0761-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 12/26/2015] [Indexed: 02/07/2023] Open
Abstract
Background Umbilical cord blood (UCB) is becoming an alternative cell source for hematopoietic stem cell transplantation (HSCT). However, umbilical cord blood transplantation (UCBT) has been severely limited by low and finite numbers of hematopoietic stem cells and their delayed engraftment. New strategies are needed to improve ex vivo expansion efficiency and in vivo haematopoietic recovery. Methods We produced an endothelium-targeted soluble Notch ligand, the Delta-Serrate-Lag-2 (DSL) domain of human Delta-like 1 fused with a RGD motif (hD1R), and tested the effects of this protein on human umbilical cord blood hematopoietic stem and progenitor cell (UCB-HSPC) ex vivo and in vivo. Results hD1R-mediated ex vivo expansion system was able to significantly increase the absolute number of UCB-HSPCs. The hD1R-expanded cells had the enhanced homing and maintained long-term hematopoietic stem cell repopulation capacity in the bone marrow of immunodeficient nonobese diabetic-severe combined immunodeficient (NOD/SCID) mice. Moreover, systemic administration of hD1R promoted the in vivo regeneration of donor cells in recipient mice and accelerated hematopoietic recovery, particularly in settings wherein the HSPCs dose was limiting. Conclusions Our results indicated that hD1R might be applied in improving hematopoietic recovery and HSC engraftment in human UCBT. Electronic supplementary material The online version of this article (doi:10.1186/s12967-015-0761-0) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Deng-Mei Tian
- Department of Hematology, 309th Hospital, Chinese People's Liberation Army, Hei-san hu Street #17, 100091, Beijing, China.
| | - Ying-Min Liang
- Department of Hematology, Tangdu Hospital, Fourth Military Medical University, Xi'an, China.
| | - Yong-Qing Zhang
- Department of Hematology, 309th Hospital, Chinese People's Liberation Army, Hei-san hu Street #17, 100091, Beijing, China.
| |
Collapse
|
46
|
Okawa S, del Sol A. A computational strategy for predicting lineage specifiers in stem cell subpopulations. Stem Cell Res 2015; 15:427-34. [PMID: 26368290 DOI: 10.1016/j.scr.2015.08.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Revised: 07/17/2015] [Accepted: 08/16/2015] [Indexed: 10/23/2022] Open
Abstract
Stem cell differentiation is a complex biological event. Our understanding of this process is partly hampered by the co-existence of different cell subpopulations within a given population, which are characterized by different gene expression states driven by different underlying transcriptional regulatory networks (TRNs). Such cellular heterogeneity has been recently explored with the modern single-cell gene expression profiling technologies, such as single-cell RT-PCR and RNA-seq. However, the identification of cell subpopulation-specific TRNs and genes determining specific lineage commitment (i.e., lineage specifiers) remains a challenge due to the slower development of appropriate computational and experimental workflows. Here, we propose a computational method for predicting lineage specifiers for different cell subpopulations in binary-fate differentiation events. Our method first reconstructs subpopulation-specific TRNs, which is more realistic than reconstructing a single TRN representing multiple cell subpopulations. Then, it predicts lineage specifiers based on a model that assumes that each parental stem cell subpopulation is in a stable state maintained by its specific TRN stability core. In addition, this stable state is maintained in the parental cell subpopulation by the balanced gene expression pattern of pairs of opposing lineage specifiers for mutually exclusive different daughter cell subpopulations. To this end, we devised a statistical metric for identifying opposing lineage specifier pairs that show a significant ratio change upon differentiation. Application of this computational method to three different stem cell systems predicted known and putative novel lineage specifiers, which could be experimentally tested. Our method does not require pre-selection of putative candidate genes, and can be applied to any binary-fate differentiation system for which single-cell gene expression data are available. Furthermore, this method is compatible with both single-cell RT-PCR and single-cell RNA-seq data. Given the increasing importance of single-cell gene expression data in stem cell biology and regenerative medicine, approaches like ours would be useful for the identification of lineage specifiers and their associated TRN stability cores.
Collapse
Affiliation(s)
- Satoshi Okawa
- Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, 7, Avenue des Hauts-Fourneaux, L-4362 Esch-sur-Alzette, Luxembourg
| | - Antonio del Sol
- Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, 7, Avenue des Hauts-Fourneaux, L-4362 Esch-sur-Alzette, Luxembourg.
| |
Collapse
|
47
|
Endothelial cells-targeted soluble human Delta-like 4 suppresses both physiological and pathological ocular angiogenesis. SCIENCE CHINA-LIFE SCIENCES 2015; 58:425-31. [DOI: 10.1007/s11427-015-4834-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Accepted: 01/13/2015] [Indexed: 12/21/2022]
|
48
|
Ogawa M, Sawaguchi S, Furukawa K, Okajima T. N-acetylglucosamine modification in the lumen of the endoplasmic reticulum. Biochim Biophys Acta Gen Subj 2015; 1850:1319-24. [PMID: 25791024 DOI: 10.1016/j.bbagen.2015.03.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Revised: 03/07/2015] [Accepted: 03/11/2015] [Indexed: 12/25/2022]
Abstract
BACKGROUND O-linked β-N-acetylglucosamine (O-GlcNAc) modification of epidermal growth factor (EGF) domains catalyzed by EGF domain O-GlcNAc transferase (EOGT) is the first example of GlcNAc modification in the lumen of the endoplasmic reticulum (ER). SCOPE OF REVIEW This review summarizes current knowledge on the EOGT-catalyzed O-GlcNAc modification of EGF domains obtained through biochemical characterization, genetic analysis in Drosophila, and identification of human EOGT mutation. Additionally, this review discusses GTDC2-another ER protein homologous to EOGT that catalyzes the GlcNAc modification of O-mannosylated α-dystroglycan-and other components of the biosynthetic pathway involved in GlcNAc modification in the ER lumen. MAJOR CONCLUSIONS GlcNAc modification in the ER lumen has been identified as a novel type of protein modification that regulates specific protein function. Moreover, abnormal GlcNAc modification in the ER lumen is responsible for Adams-Oliver syndrome and Walker-Warburg syndrome. GENERAL SIGNIFICANCE Elucidation of the biological function of GlcNAc modification in the ER lumen will provide new insights into the unique roles of O-glycans, whose importance has been demonstrated in multifunctional glycoproteins such as Notch receptors and α-dystroglyan.
Collapse
Affiliation(s)
- Mitsutaka Ogawa
- Department of Biochemistry II, Nagoya University Graduate School of Medicine, 65 Tsurumai, Showa-ku, Nagoya 466-0065, Japan; Department of Bioscience, Nagahama Institute of Bio-Science and Technology, 1266 Tamura, Nagahama, Shiga 526-0829, Japan
| | - Shogo Sawaguchi
- Department of Biochemistry II, Nagoya University Graduate School of Medicine, 65 Tsurumai, Showa-ku, Nagoya 466-0065, Japan
| | - Koichi Furukawa
- Department of Biochemistry II, Nagoya University Graduate School of Medicine, 65 Tsurumai, Showa-ku, Nagoya 466-0065, Japan
| | - Tetsuya Okajima
- Department of Biochemistry II, Nagoya University Graduate School of Medicine, 65 Tsurumai, Showa-ku, Nagoya 466-0065, Japan.
| |
Collapse
|
49
|
RBPJ inhibition impairs the growth of lung cancer. Tumour Biol 2015; 36:3751-6. [PMID: 25589461 DOI: 10.1007/s13277-014-3015-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Accepted: 12/23/2014] [Indexed: 12/11/2022] Open
Abstract
The exact effects of the modulation of Notch signaling pathway on cell growth have been shown to depend on tumor cell type. Recombination signal-binding protein Jκ (RBPJ) is a key transcription factor downstream of receptor activation in Notch signaling pathway. Here, we evaluated the effects of RBPJ inhibition on the growth of lung cancer cells. We found that a short hairpin interfering RNA (shRNA) for RBPJ efficiently inhibited RBPJ expression in lung cancer cells, resulting in a significant decrease in the cell growth. Further analyses showed that RBPJ inhibition altered the levels of its downstream targets, including p21, p27, CDK2, Hes1, Bcl-2, and SKP2, to prevent the cells from growing. Our data thus suggest that shRNA intervention of RBPJ expression could be a promising therapeutic approach for treating human lung cancer.
Collapse
|
50
|
Nielsen CM, Cuervo H, Ding VW, Kong Y, Huang EJ, Wang RA. Deletion of Rbpj from postnatal endothelium leads to abnormal arteriovenous shunting in mice. Development 2014; 141:3782-92. [PMID: 25209249 DOI: 10.1242/dev.108951] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Arteriovenous malformations (AVMs) are tortuous vessels characterized by arteriovenous (AV) shunts, which displace capillaries and shunt blood directly from artery to vein. Notch signaling regulates embryonic AV specification by promoting arterial, as opposed to venous, endothelial cell (EC) fate. To understand the essential role of endothelial Notch signaling in postnatal AV organization, we used inducible Cre-loxP recombination to delete Rbpj, a mediator of canonical Notch signaling, from postnatal ECs in mice. Deletion of endothelial Rbpj from birth resulted in features of AVMs by P14, including abnormal AV shunting and tortuous vessels in the brain, intestine and heart. We further analyzed brain AVMs, as they pose particular health risks. Consistent with AVM pathology, we found cerebral hemorrhage, hypoxia and necrosis, and neurological deficits. AV shunts originated from capillaries (and possibly venules), with the earliest detectable morphological abnormalities in AV connections by P8. Prior to AV shunt formation, alterations in EC gene expression were detected, including decreased Efnb2 and increased Pai1, which encodes a downstream effector of TGFβ signaling. After AV shunts had formed, whole-mount immunostaining showed decreased Efnb2 and increased Ephb4 expression within AV shunts, suggesting that ECs were reprogrammed from arterial to venous identity. Deletion of Rbpj from adult ECs led to tortuosities in gastrointestinal, uterine and skin vascular beds, but had mild effects in the brain. Our results demonstrate a temporal requirement for Rbpj in postnatal ECs to maintain proper artery, capillary and vein organization and to prevent abnormal AV shunting and AVM pathogenesis.
Collapse
Affiliation(s)
- Corinne M Nielsen
- Laboratory for Accelerated Vascular Research, Department of Surgery, University of California, San Francisco, CA 94143, USA
| | - Henar Cuervo
- Laboratory for Accelerated Vascular Research, Department of Surgery, University of California, San Francisco, CA 94143, USA
| | - Vivianne W Ding
- Laboratory for Accelerated Vascular Research, Department of Surgery, University of California, San Francisco, CA 94143, USA
| | - Yupeng Kong
- Laboratory for Accelerated Vascular Research, Department of Surgery, University of California, San Francisco, CA 94143, USA
| | - Eric J Huang
- Department of Pathology, University of California, San Francisco, CA 94143, USA
| | - Rong A Wang
- Laboratory for Accelerated Vascular Research, Department of Surgery, University of California, San Francisco, CA 94143, USA
| |
Collapse
|