1
|
Mohanty S, Suklabaidya S, Lavorgna A, Ueno T, Fujisawa JI, Ngouth N, Jacobson S, Harhaj EW. The tyrosine kinase KDR is essential for the survival of HTLV-1-infected T cells by stabilizing the Tax oncoprotein. Nat Commun 2024; 15:5380. [PMID: 38918393 PMCID: PMC11199648 DOI: 10.1038/s41467-024-49737-5] [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: 12/13/2023] [Accepted: 06/18/2024] [Indexed: 06/27/2024] Open
Abstract
Human T-cell leukemia virus type 1 (HTLV-1) infection is linked to the development of adult T-cell leukemia/lymphoma (ATLL) and the neuroinflammatory disease, HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP). The HTLV-1 Tax oncoprotein regulates viral gene expression and persistently activates NF-κB to maintain the viability of HTLV-1-infected T cells. Here, we utilize a kinome-wide shRNA screen to identify the tyrosine kinase KDR as an essential survival factor of HTLV-1-transformed cells. Inhibition of KDR specifically induces apoptosis of Tax expressing HTLV-1-transformed cell lines and CD4 + T cells from HAM/TSP patients. Furthermore, inhibition of KDR triggers the autophagic degradation of Tax resulting in impaired NF-κB activation and diminished viral transmission in co-culture assays. Tax induces the expression of KDR, forms a complex with KDR, and is phosphorylated by KDR. These findings suggest that Tax stability is dependent on KDR activity which could be exploited as a strategy to target Tax in HTLV-1-associated diseases.
Collapse
Affiliation(s)
- Suchitra Mohanty
- Department of Microbiology and Immunology, Penn State College School of Medicine, Hershey, PA, USA
| | - Sujit Suklabaidya
- Department of Microbiology and Immunology, Penn State College School of Medicine, Hershey, PA, USA
| | - Alfonso Lavorgna
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins School of Medicine, Baltimore, MD, USA
- Millipore-Sigma, Rockville, MD, USA
| | - Takaharu Ueno
- Department of Microbiology, Kansai Medical University, Osaka, Japan
| | | | - Nyater Ngouth
- Viral Immunology Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Steven Jacobson
- Viral Immunology Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Edward W Harhaj
- Department of Microbiology and Immunology, Penn State College School of Medicine, Hershey, PA, USA.
| |
Collapse
|
2
|
Yu S, Sun Z, Wang X, Ju T, Wang C, Liu Y, Qu Z, Liu K, Mei Z, Li N, Lu M, Wu F, Huang M, Pang X, Jia Y, Li Y, Zhang Y, Dou S, Jiang J, Li X, Yang B, Du W. Mettl13 protects against cardiac contractile dysfunction by negatively regulating C-Cbl-mediated ubiquitination of SERCA2a in ischemic heart failure. SCIENCE CHINA. LIFE SCIENCES 2023; 66:2786-2804. [PMID: 37450238 DOI: 10.1007/s11427-022-2351-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 04/14/2023] [Indexed: 07/18/2023]
Abstract
Ischemic heart failure (HF) remains a leading cause of morbidity and mortality. Maintaining homeostasis of cardiac function and preventing cardiac remodeling deterioration are critical to halting HF progression. Methyltransferase-like protein 13 (Mettl13) has been shown to regulate protein translation efficiency by acting as a protein lysine methyltransferase, but its role in cardiac pathology remains unexplored. This study aims to characterize the roles and mechanisms of Mettl13 in cardiac contractile function and HF. We found that Mettl13 was downregulated in the failing hearts of mice post-myocardial infarction (MI) and in a cellular model of oxidative stress. Cardiomyocyte-specific overexpression of Mettl13 mediated by AAV9-Mettl13 attenuated cardiac contractile dysfunction and fibrosis in response to MI, while silencing of Mettl13 impaired cardiac function in normal mice. Moreover, Mettl13 overexpression abrogated the reduction in cell shortening, Ca2+ transient amplitude and SERCA2a protein levels in the cardiomyocytes of adult mice with MI. Conversely, knockdown of Mettl13 impaired the contractility of cardiomyocytes, and decreased Ca2+ transient amplitude and SERCA2a protein expression in vivo and in vitro. Mechanistically, Mettl13 impaired the stability of c-Cbl by inducing lysine methylation of c-Cbl, which in turn inhibited ubiquitination-dependent degradation of SERCA2a. Furthermore, the inhibitory effects of knocking down Mettl13 on SERCA2a protein expression and Ca2+ transients were partially rescued by silencing c-Cbl in H2O2-treated cardiomyocytes. In conclusion, our study uncovers a novel mechanism that involves the Mettl13/c-Cbl/SERCA2a axis in regulating cardiac contractile function and remodeling, and identifies Mettl13 as a novel therapeutic target for ischemic HF.
Collapse
Affiliation(s)
- Shuting Yu
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - ZhiYong Sun
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Xiuzhu Wang
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Tiantian Ju
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Changhao Wang
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Yingqi Liu
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Zhezhe Qu
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - KuiWu Liu
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Zhongting Mei
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Na Li
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Meixi Lu
- Traditional Chinese Medicine School, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Fan Wu
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Min Huang
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Xiaochen Pang
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Yingqiong Jia
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Ying Li
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Yaozhi Zhang
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Shunkang Dou
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Jianhao Jiang
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Xin Li
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Baofeng Yang
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China.
- Northern Translational Medicine Research and Cooperation Center, Heilongjiang Academy of Medical Sciences, Harbin Medical University, Harbin, 150081, China.
- Research Unit of Noninfectious Chronic Diseases in Frigid Zone, Chinese Academy of Medical Sciences, 2019RU070, Harbin, 150081, China.
| | - Weijie Du
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China.
- Northern Translational Medicine Research and Cooperation Center, Heilongjiang Academy of Medical Sciences, Harbin Medical University, Harbin, 150081, China.
- Research Unit of Noninfectious Chronic Diseases in Frigid Zone, Chinese Academy of Medical Sciences, 2019RU070, Harbin, 150081, China.
| |
Collapse
|
3
|
Tarvestad-Laise KE, Ceresa BP. Modulating Growth Factor Receptor Signaling to Promote Corneal Epithelial Homeostasis. Cells 2023; 12:2730. [PMID: 38067157 PMCID: PMC10706396 DOI: 10.3390/cells12232730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 11/20/2023] [Accepted: 11/27/2023] [Indexed: 12/18/2023] Open
Abstract
The corneal epithelium is the first anatomical barrier between the environment and the cornea; it is critical for proper light refraction onto the retina and prevents pathogens (e.g., bacteria, viruses) from entering the immune-privileged eye. Trauma to the highly innervated corneal epithelium is extremely painful and if not resolved quickly or properly, can lead to infection and ultimately blindness. The healthy eye produces its own growth factors and is continuously bathed in tear fluid that contains these proteins and other nutrients to maintain the rapid turnover and homeostasis of the ocular surface. In this article, we review the roles of growth factors in corneal epithelial homeostasis and regeneration and some of the limitations to their use therapeutically.
Collapse
Affiliation(s)
- Kate E. Tarvestad-Laise
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY 40202, USA
| | - Brian P. Ceresa
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY 40202, USA
- Department of Ophthalmology and Vision Sciences, University of Louisville, Louisville, KY 40202, USA
| |
Collapse
|
4
|
Li XM, Zhao ZY, Yu X, Xia QD, Zhou P, Wang SG, Wu HL, Hu J. Exploiting E3 ubiquitin ligases to reeducate the tumor microenvironment for cancer therapy. Exp Hematol Oncol 2023; 12:34. [PMID: 36998063 DOI: 10.1186/s40164-023-00394-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 03/07/2023] [Indexed: 03/31/2023] Open
Abstract
AbstractTumor development relies on a complex and aberrant tissue environment in which cancer cells receive the necessary nutrients for growth, survive through immune escape, and acquire mesenchymal properties that mediate invasion and metastasis. Stromal cells and soluble mediators in the tumor microenvironment (TME) exhibit characteristic anti-inflammatory and protumorigenic activities. Ubiquitination, which is an essential and reversible posttranscriptional modification, plays a vital role in modulating the stability, activity and localization of modified proteins through an enzymatic cascade. This review was motivated by accumulating evidence that a series of E3 ligases and deubiquitinases (DUBs) finely target multiple signaling pathways, transcription factors and key enzymes to govern the functions of almost all components of the TME. In this review, we systematically summarize the key substrate proteins involved in the formation of the TME and the E3 ligases and DUBs that recognize these proteins. In addition, several promising techniques for targeted protein degradation by hijacking the intracellular E3 ubiquitin-ligase machinery are introduced.
Collapse
|
5
|
Deng Z. A relatively low glucose promotes the proliferation of vascular endothelial cells by suppressing VEGFR2 O-GlcNAcylation and its proteasome degradation. Int Ophthalmol 2022; 43:899-914. [PMID: 36089631 DOI: 10.1007/s10792-022-02492-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Accepted: 08/20/2022] [Indexed: 10/14/2022]
Abstract
PURPOSE Vascular endothelial growth factor receptors (VEGFRs) have been demonstrated to play a critical role in ischemic retinal diseases, as VEGFRs mediate hypoxia-induced neovascularization. Not only hypoxia, ischemia also induces the deficiency of glucose, yet its effects on VEGFR signal and neovascularization have seldom been studied. Bioinformatics analysis predicted that VEGFRs may be regulated by O-GlcNAcylation, while glucose deficiency influences the O-GlcNAcylation. METHODS In this study, we treated human retinal microvascular endothelial cells with low glucose (LG) alone or in combination with low oxygen (oxygen and glucose deprivation, OGD). Cell viability and apoptosis rate were used to evaluate cell growth characters. RESULTS LG (2.8 mmol/L) treatment induced mRNA and protein levels of VEGFR1, 2, 3 even in the presence of the protein synthesis inhibitor, cycloheximide (CHX), suggesting that the increase in VEGFR proteins is partially associated with post-translational modifications. Immunoprecipitation analysis showed that O-GlcNAc level was decreased by LG in both VEGFR1, 2, but a de-O-GlcNAc glycosylase inhibitor restored the O-GlcNAc levels. This inhibitor also abolished the LG-induced increase in VEGFR2 protein, whereas this effect was not disappeared in the presence of the proteasome inhibitor, MG132. Similar results were also observed under OGD condition. VEGFR2 knockdown more significantly retarded the growth of hRMECs and HUVECs than VEGFR1, 3 knockdown under LG and OGD conditions. CONCLUSIONS A relatively low glucose suppressed O-GlcNAcylation in VEGFR2, whereby inhibiting its proteasome degradation; up-regulated VEGFR2 promoted the proliferation of vascular endothelial cells under ischemic condition.
Collapse
|
6
|
Wang Y, Li J, Li X, Shi J, Jiang Z, Zhang CY. Graphene-based nanomaterials for cancer therapy and anti-infections. Bioact Mater 2022; 14:335-349. [PMID: 35386816 PMCID: PMC8964986 DOI: 10.1016/j.bioactmat.2022.01.045] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 01/19/2022] [Accepted: 01/26/2022] [Indexed: 12/11/2022] Open
Abstract
Graphene-based nanomaterials (GBNMs) has been thoroughly investigated and extensively used in many biomedical fields, especially cancer therapy and bacteria-induced infectious diseases treatment, which have attracted more and more attentions due to the improved therapeutic efficacy and reduced reverse effect. GBNMs, as classic two-dimensional (2D) nanomaterials, have unique structure and excellent physicochemical properties, exhibiting tremendous potential in cancer therapy and bacteria-induced infectious diseases treatment. In this review, we first introduced the recent advances in development of GBNMs and GBNMs-based treatment strategies for cancer, including photothermal therapy (PTT), photodynamic therapy (PDT) and multiple combination therapies. Then, we surveyed the research progress of applications of GBNMs in anti-infection such as antimicrobial resistance, wound healing and removal of biofilm. The mechanism of GBNMs was also expounded. Finally, we concluded and discussed the advantages, challenges/limitations and perspective about the development of GBNMs and GBNMs-based therapies. Collectively, we think that GBNMs could be potential in clinic to promote the improvement of cancer therapy and infections treatment.
Collapse
Affiliation(s)
- Yan Wang
- School of Physics, Beijing Institute of Technology, Beijing, 100081, China
- Institute of Biopharmaceutical and Health Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China
| | - Juan Li
- Advanced Research Institute for Multidisciplinary Science, Beijing Institute of Technology, Beijing, 100081, China
| | - Xiaobin Li
- Institute of Biopharmaceutical and Health Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China
| | - Jinping Shi
- School of Physics, Beijing Institute of Technology, Beijing, 100081, China
| | - Zhaotan Jiang
- School of Physics, Beijing Institute of Technology, Beijing, 100081, China
| | - Can Yang Zhang
- Institute of Biopharmaceutical and Health Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China
| |
Collapse
|
7
|
PRMT4-mediated arginine methylation promotes tyrosine phosphorylation of VEGFR-2 and regulates filopodia protrusions. iScience 2022; 25:104736. [PMID: 35942094 PMCID: PMC9356023 DOI: 10.1016/j.isci.2022.104736] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 06/09/2022] [Accepted: 07/07/2022] [Indexed: 11/24/2022] Open
Abstract
Through tightly controlled multilayer mechanisms, vascular endothelial growth factor receptor-2 (VEGFR-2) activation and its downstream signal transduction govern vasculogenesis and pathological angiogenesis, such as tumor angiogenesis. Therefore, it is critical to understand the molecular mechanisms governing VEGFR-2 signal transduction. We report that protein arginine methyltransferase 4 (PRMT4) via its highly conserved EVH1 and PH domain-like N-terminal domain binds to VEGFR-2 and mediates methylation of the juxtamembrane arginine 817 (R817) on VEGFR-2. Methylation of R817 selectively increases phosphorylation of tyrosine 820 (Y820). Phosphorylation of Y820 facilitates the c-Src binding with VEGFR-2 via Src homology domain 2 (SH2). Interfering with the methylation of R817 or phosphorylation of Y820 inhibits VEGFR-2-induced filopodia protrusions, a process that is critical for the core angiogenic responses of VEGFR-2. Methylation of R817 is an important previously unrecognized mechanism of the angiogenic signaling of VEGFR-2, with implications for the development of novel-targeted VEGFR-2 inhibitors. Arginine 817 methylation regulates phosphorylation of Y820 on VEGFR-2 Phosphorylation of Y820 recruits c-Src kinase to VEGFR-2, leading to its activation VEGFR-2/c-Src axis mediates filopodia protrusions in endothelial cells
Collapse
|
8
|
Saikia Q, Reeve H, Alzahrani A, Critchley WR, Zeqiraj E, Divan A, Harrison MA, Ponnambalam S. VEGFR endocytosis: Implications for angiogenesis. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2022; 194:109-139. [PMID: 36631189 DOI: 10.1016/bs.pmbts.2022.06.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The binding of vascular endothelial growth factor (VEGF) superfamily to VEGF receptor tyrosine kinases (VEGFRs) and co-receptors regulates vasculogenesis, angiogenesis and lymphangiogenesis. A recurring theme is that dysfunction in VEGF signaling promotes pathological angiogenesis, an important feature of cancer and pro-inflammatory disease states. Endocytosis of basal (resting) or activated VEGFRs facilitates signal attenuation and endothelial quiescence. However, increasing evidence suggest that activated VEGFRs can continue to signal from intracellular compartments such as endosomes. In this chapter, we focus on the evolving link between VEGFR endocytosis, signaling and turnover and the implications for angiogenesis. There is much interest in how such understanding of VEGFR dynamics can be harnessed therapeutically for a wide range of human disease states.
Collapse
Affiliation(s)
- Queen Saikia
- School of Molecular & Cellular Biology, University of Leeds, Leeds, United Kingdom
| | - Hannah Reeve
- School of Molecular & Cellular Biology, University of Leeds, Leeds, United Kingdom
| | - Areej Alzahrani
- School of Molecular & Cellular Biology, University of Leeds, Leeds, United Kingdom
| | - William R Critchley
- School of Molecular & Cellular Biology, University of Leeds, Leeds, United Kingdom
| | - Elton Zeqiraj
- School of Molecular & Cellular Biology, University of Leeds, Leeds, United Kingdom
| | - Aysha Divan
- School of Molecular & Cellular Biology, University of Leeds, Leeds, United Kingdom
| | - Michael A Harrison
- School of Biomedical Sciences, University of Leeds, Leeds, United Kingdom
| | | |
Collapse
|
9
|
Elangovan M, Ka J, Pak B, Choi W, Oh SR, Jin SW, Yoo YJ. Ubiquitin-conjugating enzyme V variant 1 enables cellular responses toward fibroblast growth factor signaling in endothelium. FASEB J 2021; 36:e22103. [PMID: 34921695 DOI: 10.1096/fj.202100808rrr] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 11/23/2021] [Accepted: 12/01/2021] [Indexed: 12/13/2022]
Abstract
Ubiquitination has been shown to provide an essential regulatory role in modulating the duration and amplitude of the signaling activity in angiogenesis. While successive enzymatic reactions mediated by three distinct types of enzymes commonly known as E1, E2, and E3 are required for ubiquitination, the role of E3s which govern the final step of ubiquitination has been extensively analyzed in angiogenesis. In contrast, the role of E2s, which determine the context and functional consequences of ubiquitination, remains largely unknown with respect to angiogenesis. To better elucidate the role of E2s in modulating endothelial behaviors during angiogenesis, we first systematically analyze the expression pattern of E2s in endothelial cells (ECs) using previously published scRNA-seq data and identify ubiquitin-conjugating enzyme variant 1 (UBE2V1), an unconventional E2 without innate catalytic activity, as one of the most abundantly expressed E2s in ECs. While ubiquitously expressed in diverse cell types, abrogation of UBE2V1 significantly impairs proliferation and viability of human umbilical vein endothelial cells (HUVECs) without affecting other cell types, suggesting that UBE2V1 is likely to possess nonredundant functions in ECs. Consistent with this idea, UBE2V1 appears to be critical for morphogenesis and migration of ECs during angiogenesis. Interestingly, we find that UBE2V1 is essential for fibroblast growth factor 2 (FGF2)-induced angiogenesis, but appears to have minor effects on vascular endothelial growth factor-A-induced angiogenesis in vitro as well as in vivo. Therefore, it seems that UBE2V1 could enable ECs to distinguish two related yet distinct angiogenic cues. Mechanistically, we show that UBE2V1 promotes ubiquitination of MEK kinase 1, a key mediator of FGF2 signaling, to enhance phosphorylation of extracellular signal-regulated kinase 1/2 in HUVECs. Taken together, our results illustrate the unique role of UBE2V1 as a key modulator for angiogenic behaviors in ECs.
Collapse
Affiliation(s)
- Muthukumar Elangovan
- Cell Logistics Research Center, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea.,School of Life Sciences, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea
| | - Jun Ka
- Cell Logistics Research Center, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea.,School of Life Sciences, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea
| | - Boryeong Pak
- Cell Logistics Research Center, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea.,School of Life Sciences, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea
| | - Woosoung Choi
- Cell Logistics Research Center, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea.,School of Life Sciences, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea
| | - Se-Ra Oh
- Cell Logistics Research Center, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea.,School of Life Sciences, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea
| | - Suk-Won Jin
- Cell Logistics Research Center, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea.,School of Life Sciences, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea
| | - Yung Joon Yoo
- School of Life Sciences, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea
| |
Collapse
|
10
|
Wang P, Jia Y, Han Y, Wang W, Zhu Y, Xu J, Guan C, Ying J, Deng S, Wang J, Zhang X, Chen M, Cheng C, Song H. Eimeria acervulina Microneme Protein 3 Inhibits Apoptosis of the Chicken Duodenal Epithelial Cell by Targeting the Casitas B-Lineage Lymphoma Protein. Front Vet Sci 2021; 8:636809. [PMID: 34141730 PMCID: PMC8204691 DOI: 10.3389/fvets.2021.636809] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 03/22/2021] [Indexed: 11/13/2022] Open
Abstract
Eimeria acervulina (E. acervulina) causes coccidiosis in poultry which persists as economic pain worldwide. Most damage to the intestinal mucosa results from apoptosis of the infected intestinal epithelial cells. The Microneme protein 3 (MIC3) protein is a key virulence factor in some parasites involved in host cell apoptosis inhibition. Here, we studied whether and how MIC3 affects the apoptosis in E. acervulina infected chicken duodenal epithelial cells. Through flow cytometry (FCM), we found that the presence of merozoites and the overexpression of MIC3 significantly decreased apoptosis and the activity of caspase-3 in chicken duodenal epithelial cells at 4, 6, and 8 h post merozoite infection (P < 0.01). Silencing the Casitas B-lineage lymphoma (CBL) protein, a host receptor for MIC3 with shRNA was shown to promote apoptosis in the chicken duodenal epithelial cells. The early apoptotic rate of host cells in the lentiviral-MIC3 group was significantly lower than that in the lentiviral-MIC3 + shRNA CBL group at 4 h after MIC3 expression (P < 0.01), and it was moderately decreased in the lentiviral-MIC3 + shRNA CBL group compared with that in the shRNA CBL group. Our data indicated that MIC3 inhibited early apoptosis of E. acervulina infected chicken duodenal epithelial cells by targeting host receptor-CBL protein. These findings unveiled one of the mechanisms of how intracellular parasites affect the apoptosis of infected host cells, which provided a deeper understanding of their pathogenesis.
Collapse
Affiliation(s)
- Pu Wang
- Key Laboratory of Applied Technology on Green-Eco Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health Inspection and Internet Technology, College of Animal Science and Technology, College of Veterinary Medicine, Zhejiang A&F University, Hangzhou, China
| | - Yukun Jia
- Key Laboratory of Applied Technology on Green-Eco Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health Inspection and Internet Technology, College of Animal Science and Technology, College of Veterinary Medicine, Zhejiang A&F University, Hangzhou, China
| | - Yue Han
- Key Laboratory of Applied Technology on Green-Eco Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health Inspection and Internet Technology, College of Animal Science and Technology, College of Veterinary Medicine, Zhejiang A&F University, Hangzhou, China
| | - Weirong Wang
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Yiran Zhu
- Jixian Honors College, Zhejiang A&F University, Hangzhou, China
| | - Jiali Xu
- Key Laboratory of Applied Technology on Green-Eco Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health Inspection and Internet Technology, College of Animal Science and Technology, College of Veterinary Medicine, Zhejiang A&F University, Hangzhou, China
| | - Chiyu Guan
- Key Laboratory of Applied Technology on Green-Eco Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health Inspection and Internet Technology, College of Animal Science and Technology, College of Veterinary Medicine, Zhejiang A&F University, Hangzhou, China
| | - Jinpeng Ying
- Key Laboratory of Applied Technology on Green-Eco Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health Inspection and Internet Technology, College of Animal Science and Technology, College of Veterinary Medicine, Zhejiang A&F University, Hangzhou, China
| | - Simin Deng
- Key Laboratory of Applied Technology on Green-Eco Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health Inspection and Internet Technology, College of Animal Science and Technology, College of Veterinary Medicine, Zhejiang A&F University, Hangzhou, China
| | - Jing Wang
- Key Laboratory of Applied Technology on Green-Eco Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health Inspection and Internet Technology, College of Animal Science and Technology, College of Veterinary Medicine, Zhejiang A&F University, Hangzhou, China
| | - Xian Zhang
- Key Laboratory of Applied Technology on Green-Eco Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health Inspection and Internet Technology, College of Animal Science and Technology, College of Veterinary Medicine, Zhejiang A&F University, Hangzhou, China
| | - Mianmian Chen
- Key Laboratory of Applied Technology on Green-Eco Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health Inspection and Internet Technology, College of Animal Science and Technology, College of Veterinary Medicine, Zhejiang A&F University, Hangzhou, China
| | - Changyong Cheng
- Key Laboratory of Applied Technology on Green-Eco Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health Inspection and Internet Technology, College of Animal Science and Technology, College of Veterinary Medicine, Zhejiang A&F University, Hangzhou, China
| | - Houhui Song
- Key Laboratory of Applied Technology on Green-Eco Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health Inspection and Internet Technology, College of Animal Science and Technology, College of Veterinary Medicine, Zhejiang A&F University, Hangzhou, China
| |
Collapse
|
11
|
Weidle UH, Nopora A. Clear Cell Renal Carcinoma: MicroRNAs With Efficacy in Preclinical In Vivo Models. Cancer Genomics Proteomics 2021; 18:349-368. [PMID: 33994361 PMCID: PMC8240043 DOI: 10.21873/cgp.20265] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/16/2021] [Accepted: 02/24/2021] [Indexed: 01/07/2023] Open
Abstract
In order to identify new targets and treatment modalities for clear cell renal carcinoma, we surveyed the literature with respect to microRNAs involved in this disease. In this review, we have focused on up- and down-regulated miRs which mediate efficacy in preclinical clear-cell renal carcinoma-related in vivo models. We have identified 10 up-regulated and 33 down-regulated micro-RNAs according to this criterion. As proof-of-concept, micro-RNAs interfering with VEGF (miR-205p) and mTOR (mir-99a) pathways, which are modulated by approved drugs for this disease, have been identified. miRs targeting hypoxia induced factor-2α (HIF-2α) (miR-145), E3 ubiquitinylases speckle-type POZ protein (SPOP) (miR 520/372/373) and casitas B-lineage lymphoma (CBL) (miR-200a-3p), interfere with druggable targets. Further identified miRs interfere with cell-cycle dependent kinases, such as CDK2 (miR-200c), CDK4, 6 (miR-1) and CDK4, 9 (206c). Transmembrane receptor Ral interacting protein of 76 kD (RLIP76), targeted by mir-137, has emerged as another important target for ccRCC. Additional miRs and their targets merrying further preclinical validation are discussed.
Collapse
Affiliation(s)
- Ulrich H Weidle
- Roche Pharma Research and Early Development, Roche Innovation Center Munich, Penzberg, Germany
| | - Adam Nopora
- Roche Pharma Research and Early Development, Roche Innovation Center Munich, Penzberg, Germany
| |
Collapse
|
12
|
Crotchett BLM, Ceresa BP. Knockout of c-Cbl slows EGFR endocytic trafficking and enhances EGFR signaling despite incompletely blocking receptor ubiquitylation. Pharmacol Res Perspect 2021; 9:e00756. [PMID: 33811466 PMCID: PMC8019067 DOI: 10.1002/prp2.756] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 02/25/2021] [Indexed: 12/17/2022] Open
Abstract
Epidermal growth factor receptor (EGFR) activity is necessary and sufficient for corneal epithelial homeostasis. However, the addition of exogenous Epidermal Growth Factor (EGF) does not reliably restore the corneal epithelium when wounded. This is likely due to high levels of endogenous EGF in tear fluid as well as desensitization of the EGFR following ligand stimulation. We hypothesize that preventing receptor downregulation is an alternative mechanism to enhance EGFR signaling and promote the restoration of compromised corneas. Ligand-dependent EGFR ubiquitylation is associated with the targeted degradation of the receptor. In this manuscript, we determine whether knockout of c-Cbl, an E3 ubiquitin ligase that ubiquitylates the EGFR, is sufficient to prolong EGFR phosphorylation and sustain signaling. Using CRISPR/Cas9 gene editing, we generated immortalized human corneal epithelial (hTCEpi) cells lacking c-Cbl. Knockout (KO) cells expressed the other E3 ligases at the same levels as the control cells, indicating other E3 ligases were not up-regulated. As compared to the control cells, EGF-stimulated EGFR ubiquitylation was reduced in KO cells, but not completely abolished. Similarly, EGF:EGFR trafficking was slowed, with a 35% decrease in the rate of endocytosis and a twofold increase in the receptor half-life. This resulted in a twofold increase in the magnitude of EGFR phosphorylation, with no change in duration. Conversely, Mitogen Activating Protein Kinase (MAPK) phosphorylation did not increase in magnitude but was sustained for 2-3 h as compared to control cells. We propose antagonizing c-Cbl will partially alter receptor ubiquitylation and endocytic trafficking but this is sufficient to enhance downstream signaling.
Collapse
Affiliation(s)
- Brandon L M Crotchett
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY, USA
| | - Brian P Ceresa
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY, USA.,Department of Visual Science, University of Louisville, Louisville, KY, USA
| |
Collapse
|
13
|
Shen C, Lu Y, Zhang J, Li Y, Zhang Y, Fan D. c-Casitas b-Lineage Lymphoma Downregulation Improves the Ability of Long-term Cultured Mesenchymal Stem Cells for Promoting Angiogenesis and Diabetic Wound Healing. Cell Transplant 2021; 30:963689721989605. [PMID: 33588607 PMCID: PMC7894690 DOI: 10.1177/0963689721989605] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The chronic wound induced by diabetes has poor efficacy and could lead to amputation. The repair function of mesenchymal stem cells (MSCs) impaired after long-term culture in vitro. Studies have shown that the proto-oncogene c-Casitas b-lineage lymphoma (c-Cbl) can regulate receptor- and non-receptor tyrosine kinase, which was also involved in the angiogenesis process. This study aimed to explore the regulative effect of c-Cbl on the proangiogenic functions of long-term cultured MSCs and evaluate its pro-healing effect on diabetic wounds. In this study, the c-Cbl level was downregulated by locked nucleic acid–modified antisense oligonucleotide gapmers (LNA Gapmers). We detected the effect of c-Cbl downregulation on long-term cultured MSCs in terms of phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt) signal, cellular proliferation, senescence, migration, and angiogenic factors paracrine activity in vitro. In vivo, we observed the pro-healing effect of long-term cultured MSCs, with or without c-Cbl downregulation, on the diabetic wound. We found that the phosphorylation level of c-Cbl increased and that of Akt decreased in passage 10 (P10) MSCs compared with passage 3 (P3) MSCs (P < 0.05). Additionally, the proliferation, paracrine, and migration capacity of P10 MSCs decreased significantly, accompanied by the increase of cellular senescence (P < 0.05). However, these functions, including PI3K/Akt activity of P10 MSCs, have been improved by c-Cbl downregulation (P < 0.05). Compared with P10 MSCs treatment, treatment with c-Cbl downregulated P10 MSCs accelerated diabetic wound healing, as defined by a more rapid wound closure (P < 0.05), more neovascularization (P < 0.05), and higher scores of wound histological assessment (P < 0.05) in a diabetic rat model. Our findings suggested that c-Cbl downregulation could attenuate the impairment of proangiogenic functions in MSCs induced by long-term culture in vitro and improve the effect of long-term cultured MSCs in promoting diabetic wound healing.
Collapse
Affiliation(s)
- Chengcheng Shen
- Department of Plastic and Cosmetic Surgery, Xinqiao Hospital, Army Medical University, Chongqing, China
| | - Yuangang Lu
- Department of Plastic and Cosmetic Surgery, Daping Hospital, Army Medical University, Chongqing, China
| | - Jianghe Zhang
- Department of Plastic and Cosmetic Surgery, Xinqiao Hospital, Army Medical University, Chongqing, China
| | - Yujie Li
- Department of Plastic and Cosmetic Surgery, Xinqiao Hospital, Army Medical University, Chongqing, China
| | - Yiming Zhang
- Department of Plastic and Cosmetic Surgery, Xinqiao Hospital, Army Medical University, Chongqing, China
| | - Dongli Fan
- Department of Plastic and Cosmetic Surgery, Xinqiao Hospital, Army Medical University, Chongqing, China
| |
Collapse
|
14
|
Chen S, Sun Q, Sun D, Willette-Brown J, Anderson MJ, Gu Q, Lewandoski M, Hu Y, Zhu F, Wei F, Zhang J. C-CBL is required for inhibition of angiogenesis through modulating JAK2/STAT3 activity in ROP development. Biomed Pharmacother 2020; 132:110856. [PMID: 33125970 PMCID: PMC8336301 DOI: 10.1016/j.biopha.2020.110856] [Citation(s) in RCA: 6] [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: 06/23/2020] [Revised: 09/10/2020] [Accepted: 09/11/2020] [Indexed: 11/29/2022] Open
Abstract
Purpose: The incidence of retinopathy of prematurity (ROP) has increased continuously in recent years. However, the therapeutic effects of current treatments still remain undesired. This study aims to investigate the role of C-CBL in retinal angiogenesis in ROP and its potential as a therapeutic target. Methods: Mouse retina microvascular endothelial cells (mRMECs) and induced experimental ROP/ oxygen-induced retinopathy (OIR) mice were employed to investigate the role of C-CBL in angiogenesis with combined molecular and cellular approaches, and histopathology methods. OIR mouse pups at postnatal day 12 (P12) were either injected intravitreally with adenovirus overexpressing c-Cbl or c-Cbl siRNA. Retinal neovascularization and avascular status were evaluated by retinal immunofluorescence (IF) staining, whole-mounts and hematoxylin and eosin (H&E) staining. Results: C-CBL inhibits neovascularization by negatively regulating JAK2/STAT3/VEGF signaling axis in a ubiquitination-dependent manner. Knockdown of c-Cbl by siRNA reduced ubiquitin-mediated JAK2 degradation and increased levels of p-JAK2, p-STAT3, VEGF, and neovascularization in mRMECs, which can be reversed by JAK2 inhibitor treatment. While knockdown of c-Cbl significantly increased neovascular (NV) zone in the retinas, c-Cbl overexpression inhibited neovascularization in the retinal tissues in OIR mice. Conclusion: We found that C-CBL is required for anti-neovascularization process in ROP development by inhibiting JAK2/STAT3-dependent angiogenesis. Thus, our finding strongly suggest that C-CBL may be a potential novel therapeutic target for treating ROP.
Collapse
Affiliation(s)
- Shimei Chen
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China; Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai, 200080, China; Shanghai Engineering Center for Visual Science and Photomedicine, Shanghai, 200080, China; National Clinical Research Center for Eye Diseases, Shanghai, 20080, China; Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases, Shanghai, 20080, China
| | - Qiao Sun
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China; Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai, 200080, China; Shanghai Engineering Center for Visual Science and Photomedicine, Shanghai, 200080, China; National Clinical Research Center for Eye Diseases, Shanghai, 20080, China; Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases, Shanghai, 20080, China
| | - Dandan Sun
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China; Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai, 200080, China; Shanghai Engineering Center for Visual Science and Photomedicine, Shanghai, 200080, China; National Clinical Research Center for Eye Diseases, Shanghai, 20080, China; Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases, Shanghai, 20080, China
| | - Jami Willette-Brown
- Laboratory of Cancer Immunometabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD, 21702, USA
| | - Matthew J Anderson
- Cancer and Developmental Biology Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD, 21702, USA
| | - Qing Gu
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China; Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai, 200080, China; Shanghai Engineering Center for Visual Science and Photomedicine, Shanghai, 200080, China
| | - Mark Lewandoski
- Cancer and Developmental Biology Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD, 21702, USA
| | - Yinling Hu
- Laboratory of Cancer Immunometabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD, 21702, USA
| | - Feng Zhu
- Laboratory of Cancer Immunometabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD, 21702, USA.
| | - Fang Wei
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China; Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai, 200080, China; Shanghai Engineering Center for Visual Science and Photomedicine, Shanghai, 200080, China; National Clinical Research Center for Eye Diseases, Shanghai, 20080, China; Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases, Shanghai, 20080, China.
| | - Jian Zhang
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China; Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai, 200080, China; Shanghai Engineering Center for Visual Science and Photomedicine, Shanghai, 200080, China; National Clinical Research Center for Eye Diseases, Shanghai, 20080, China; Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases, Shanghai, 20080, China.
| |
Collapse
|
15
|
Li Y, Xu X, Liu X, Li B, Han Y, Zheng Y, Chen D, Yeung KWK, Cui Z, Li Z, Liang Y, Zhu S, Wang X, Wu S. Photoelectrons Mediating Angiogenesis and Immunotherapy through Heterojunction Film for Noninvasive Disinfection. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:2000023. [PMID: 32999817 PMCID: PMC7507565 DOI: 10.1002/advs.202000023] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 05/31/2020] [Indexed: 05/23/2023]
Abstract
A light-inspired hydroxyapatite (Hap)/nitrogen-doped carbon dots (NCDs) modified graphene oxide (GO) heterojunction film is developed, which shows a promoted separation of interfacial electrons and holes and an inhibited recombination efficiency via hole depletion. The metabolism of bacteria on this film is significantly inhibited under light irradiation, due to the enhanced photocatalytic and photothermal effects. In addition, the electron transfer from the plasmonic membrane to the GO/NCD/Hap film further inhibits the adenosine triphosphate process of bacteria, thus leading to the synergetic antibacterial efficacy. Meanwhile, the electron transfer between film and cell membrane induces the Ca2+ flow after irradiation, which can promote the migration and proliferation of cells and alkaline phosphatase enhancement, thus favoring the tissue reconstruction. An in vivo test discloses that the vascular injury repair is achieved through the Ca2+-activated PLCγ1/ERK pathway, identified by the enhanced CD31 expression. Moreover, the increased CD4+/CD8+ lymphocytes are ameliorative by activating the PI3K/P-AKT pathway. Consequently, the electron transfer boosts the synergic photodynamic and photothermal therapeutic effects for bacterial infection by Ca2+ flow for immunotherapy. This mild phototherapy approach with GO/NCDs/Hap, which can simultaneously repair injured vessels and relieve inflammation reactions, will increase the clinical application of noninvasive phototherapy in the near future.
Collapse
Affiliation(s)
- Yuan Li
- The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of ChinaSchool of Materials Science and EngineeringTianjin UniversityTianjin300072China
| | - Xiaomo Xu
- Hubei Key Laboratory of Polymer MaterialsMinistry‐of‐Education Key Laboratory for the Green Preparation and Application of Functional MaterialsSchool of Materials Science and EngineeringHubei UniversityWuhan430062China
| | - Xiangmei Liu
- Hubei Key Laboratory of Polymer MaterialsMinistry‐of‐Education Key Laboratory for the Green Preparation and Application of Functional MaterialsSchool of Materials Science and EngineeringHubei UniversityWuhan430062China
| | - Bo Li
- State Key Laboratory for Mechanical Behavior of MaterialsSchool of Materials Science and EngineeringXi'an Jiaotong UniversityXi'anShaanxi710049China
| | - Yong Han
- State Key Laboratory for Mechanical Behavior of MaterialsSchool of Materials Science and EngineeringXi'an Jiaotong UniversityXi'anShaanxi710049China
| | - Yufeng Zheng
- State Key Laboratory for Turbulence and Complex SystemDepartment of Materials Science and EngineeringCollege of EngineeringPeking UniversityBeijing100871China
| | - Da‐fu Chen
- Laboratory Bone Tissue EngineeringBeijing Research Institute Orthopaedics and TraumatologyBeijing JiShuiTan HospitalBeijing100035P. R. China
| | - Kelvin Wai Kwok Yeung
- Department of Orthopaedics and TraumatologyLi Ka Shing Faculty of MedicineThe University of Hong KongPokfulamHong Kong999077China
| | - Zhenduo Cui
- The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of ChinaSchool of Materials Science and EngineeringTianjin UniversityTianjin300072China
| | - Zhaoyang Li
- The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of ChinaSchool of Materials Science and EngineeringTianjin UniversityTianjin300072China
| | - Yanqin Liang
- The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of ChinaSchool of Materials Science and EngineeringTianjin UniversityTianjin300072China
| | - Shengli Zhu
- The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of ChinaSchool of Materials Science and EngineeringTianjin UniversityTianjin300072China
| | - Xianbao Wang
- Hubei Key Laboratory of Polymer MaterialsMinistry‐of‐Education Key Laboratory for the Green Preparation and Application of Functional MaterialsSchool of Materials Science and EngineeringHubei UniversityWuhan430062China
| | - Shuilin Wu
- The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of ChinaSchool of Materials Science and EngineeringTianjin UniversityTianjin300072China
| |
Collapse
|
16
|
Hong Y, Keylock A, Jensen B, Jacques TS, Ogunbiyi O, Omoyinmi E, Saunders D, Mallick AA, Tooley M, Newbury-Ecob R, Rankin J, Williams HJ, Ganesan V, Brogan PA, Eleftheriou D. Cerebral arteriopathy associated with heterozygous variants in the casitas B-lineage lymphoma gene. NEUROLOGY-GENETICS 2020; 6:e448. [PMID: 32637631 PMCID: PMC7323481 DOI: 10.1212/nxg.0000000000000448] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 04/28/2020] [Indexed: 11/18/2022]
Abstract
Objective To report a series of patients with cerebral arteriopathy associated with heterozygous variants in the casitas B-lineage lymphoma (CBL) gene and examine the functional role of the identified mutant Cbl protein. We hypothesized that mutated Cbl fails to act as a negative regulator of the RAS-mitogen-activated protein kinases (MAPK) signaling pathway, resulting in enhanced vascular fibroblast proliferation and migration and enhanced angiogenesis and collateral vessel formation. Methods We performed whole-exome sequencing in 11 separate families referred to Great Ormond Street Hospital, London, with suspected genetic cause for clinical presentation with severe progressive cerebral arteriopathy. Results We identified heterozygous variants in the CBL gene in 5 affected cases from 3 families. We show that impaired CBL-mediated degradation of cell surface tyrosine kinase receptors and dysregulated intracellular signaling through the RAS-MAPK pathway contribute to the pathogenesis of the observed arteriopathy. Mutated CBL failed to control the angiogenic signal relay of vascular endothelial growth factor receptor 2, leading to prolonged tyrosine kinase signaling, thus driving angiogenesis and collateral vessel formation. Mutant Cbl promoted myofibroblast migration and proliferation contributing to vascular occlusive disease; these effects were abrogated following treatment with a RAF-RAS-MAPK pathway inhibitor. Conclusions We provide a possible mechanism for the arteriopathy associated with heterozygous CBL variants. Identification of the key role for the RAS-MAPK pathway in CBL-mediated cerebral arteriopathy could facilitate identification of novel or repurposed druggable targets for treating these patients and may also provide therapeutic clues for other cerebral arteriopathies.
Collapse
Affiliation(s)
- Ying Hong
- UCL Great Ormond Street Institute of Child Health (Y.H., A.K., B.J., T.S.J., E.O., D.S., V.G., P.A.B., D.E.); Histopathology Department (O.O.), Great Ormond Street Hospital, London; Paediatric Neurology Department (A.A.M.), and Genetics Department (M.T., R.N.-E.), Bristol Royal Hospital for Children; Genetics Department (J.R.), Royal Devon and Exeter NHS Foundation Trust, Exeter; Centre for Translational Omics-GOSgene (H.J.W.), UCL GOS Institute of Child Health; and Centre for Adolescent Rheumatology Versus Arthritis (D.E.), London, United Kingdom
| | - Annette Keylock
- UCL Great Ormond Street Institute of Child Health (Y.H., A.K., B.J., T.S.J., E.O., D.S., V.G., P.A.B., D.E.); Histopathology Department (O.O.), Great Ormond Street Hospital, London; Paediatric Neurology Department (A.A.M.), and Genetics Department (M.T., R.N.-E.), Bristol Royal Hospital for Children; Genetics Department (J.R.), Royal Devon and Exeter NHS Foundation Trust, Exeter; Centre for Translational Omics-GOSgene (H.J.W.), UCL GOS Institute of Child Health; and Centre for Adolescent Rheumatology Versus Arthritis (D.E.), London, United Kingdom
| | - Barbara Jensen
- UCL Great Ormond Street Institute of Child Health (Y.H., A.K., B.J., T.S.J., E.O., D.S., V.G., P.A.B., D.E.); Histopathology Department (O.O.), Great Ormond Street Hospital, London; Paediatric Neurology Department (A.A.M.), and Genetics Department (M.T., R.N.-E.), Bristol Royal Hospital for Children; Genetics Department (J.R.), Royal Devon and Exeter NHS Foundation Trust, Exeter; Centre for Translational Omics-GOSgene (H.J.W.), UCL GOS Institute of Child Health; and Centre for Adolescent Rheumatology Versus Arthritis (D.E.), London, United Kingdom
| | - Thomas S Jacques
- UCL Great Ormond Street Institute of Child Health (Y.H., A.K., B.J., T.S.J., E.O., D.S., V.G., P.A.B., D.E.); Histopathology Department (O.O.), Great Ormond Street Hospital, London; Paediatric Neurology Department (A.A.M.), and Genetics Department (M.T., R.N.-E.), Bristol Royal Hospital for Children; Genetics Department (J.R.), Royal Devon and Exeter NHS Foundation Trust, Exeter; Centre for Translational Omics-GOSgene (H.J.W.), UCL GOS Institute of Child Health; and Centre for Adolescent Rheumatology Versus Arthritis (D.E.), London, United Kingdom
| | - Olumide Ogunbiyi
- UCL Great Ormond Street Institute of Child Health (Y.H., A.K., B.J., T.S.J., E.O., D.S., V.G., P.A.B., D.E.); Histopathology Department (O.O.), Great Ormond Street Hospital, London; Paediatric Neurology Department (A.A.M.), and Genetics Department (M.T., R.N.-E.), Bristol Royal Hospital for Children; Genetics Department (J.R.), Royal Devon and Exeter NHS Foundation Trust, Exeter; Centre for Translational Omics-GOSgene (H.J.W.), UCL GOS Institute of Child Health; and Centre for Adolescent Rheumatology Versus Arthritis (D.E.), London, United Kingdom
| | - Ebun Omoyinmi
- UCL Great Ormond Street Institute of Child Health (Y.H., A.K., B.J., T.S.J., E.O., D.S., V.G., P.A.B., D.E.); Histopathology Department (O.O.), Great Ormond Street Hospital, London; Paediatric Neurology Department (A.A.M.), and Genetics Department (M.T., R.N.-E.), Bristol Royal Hospital for Children; Genetics Department (J.R.), Royal Devon and Exeter NHS Foundation Trust, Exeter; Centre for Translational Omics-GOSgene (H.J.W.), UCL GOS Institute of Child Health; and Centre for Adolescent Rheumatology Versus Arthritis (D.E.), London, United Kingdom
| | - Dawn Saunders
- UCL Great Ormond Street Institute of Child Health (Y.H., A.K., B.J., T.S.J., E.O., D.S., V.G., P.A.B., D.E.); Histopathology Department (O.O.), Great Ormond Street Hospital, London; Paediatric Neurology Department (A.A.M.), and Genetics Department (M.T., R.N.-E.), Bristol Royal Hospital for Children; Genetics Department (J.R.), Royal Devon and Exeter NHS Foundation Trust, Exeter; Centre for Translational Omics-GOSgene (H.J.W.), UCL GOS Institute of Child Health; and Centre for Adolescent Rheumatology Versus Arthritis (D.E.), London, United Kingdom
| | - Andrew A Mallick
- UCL Great Ormond Street Institute of Child Health (Y.H., A.K., B.J., T.S.J., E.O., D.S., V.G., P.A.B., D.E.); Histopathology Department (O.O.), Great Ormond Street Hospital, London; Paediatric Neurology Department (A.A.M.), and Genetics Department (M.T., R.N.-E.), Bristol Royal Hospital for Children; Genetics Department (J.R.), Royal Devon and Exeter NHS Foundation Trust, Exeter; Centre for Translational Omics-GOSgene (H.J.W.), UCL GOS Institute of Child Health; and Centre for Adolescent Rheumatology Versus Arthritis (D.E.), London, United Kingdom
| | - Madeleine Tooley
- UCL Great Ormond Street Institute of Child Health (Y.H., A.K., B.J., T.S.J., E.O., D.S., V.G., P.A.B., D.E.); Histopathology Department (O.O.), Great Ormond Street Hospital, London; Paediatric Neurology Department (A.A.M.), and Genetics Department (M.T., R.N.-E.), Bristol Royal Hospital for Children; Genetics Department (J.R.), Royal Devon and Exeter NHS Foundation Trust, Exeter; Centre for Translational Omics-GOSgene (H.J.W.), UCL GOS Institute of Child Health; and Centre for Adolescent Rheumatology Versus Arthritis (D.E.), London, United Kingdom
| | - Ruth Newbury-Ecob
- UCL Great Ormond Street Institute of Child Health (Y.H., A.K., B.J., T.S.J., E.O., D.S., V.G., P.A.B., D.E.); Histopathology Department (O.O.), Great Ormond Street Hospital, London; Paediatric Neurology Department (A.A.M.), and Genetics Department (M.T., R.N.-E.), Bristol Royal Hospital for Children; Genetics Department (J.R.), Royal Devon and Exeter NHS Foundation Trust, Exeter; Centre for Translational Omics-GOSgene (H.J.W.), UCL GOS Institute of Child Health; and Centre for Adolescent Rheumatology Versus Arthritis (D.E.), London, United Kingdom
| | - Julia Rankin
- UCL Great Ormond Street Institute of Child Health (Y.H., A.K., B.J., T.S.J., E.O., D.S., V.G., P.A.B., D.E.); Histopathology Department (O.O.), Great Ormond Street Hospital, London; Paediatric Neurology Department (A.A.M.), and Genetics Department (M.T., R.N.-E.), Bristol Royal Hospital for Children; Genetics Department (J.R.), Royal Devon and Exeter NHS Foundation Trust, Exeter; Centre for Translational Omics-GOSgene (H.J.W.), UCL GOS Institute of Child Health; and Centre for Adolescent Rheumatology Versus Arthritis (D.E.), London, United Kingdom
| | - Hywel J Williams
- UCL Great Ormond Street Institute of Child Health (Y.H., A.K., B.J., T.S.J., E.O., D.S., V.G., P.A.B., D.E.); Histopathology Department (O.O.), Great Ormond Street Hospital, London; Paediatric Neurology Department (A.A.M.), and Genetics Department (M.T., R.N.-E.), Bristol Royal Hospital for Children; Genetics Department (J.R.), Royal Devon and Exeter NHS Foundation Trust, Exeter; Centre for Translational Omics-GOSgene (H.J.W.), UCL GOS Institute of Child Health; and Centre for Adolescent Rheumatology Versus Arthritis (D.E.), London, United Kingdom
| | - Vijeya Ganesan
- UCL Great Ormond Street Institute of Child Health (Y.H., A.K., B.J., T.S.J., E.O., D.S., V.G., P.A.B., D.E.); Histopathology Department (O.O.), Great Ormond Street Hospital, London; Paediatric Neurology Department (A.A.M.), and Genetics Department (M.T., R.N.-E.), Bristol Royal Hospital for Children; Genetics Department (J.R.), Royal Devon and Exeter NHS Foundation Trust, Exeter; Centre for Translational Omics-GOSgene (H.J.W.), UCL GOS Institute of Child Health; and Centre for Adolescent Rheumatology Versus Arthritis (D.E.), London, United Kingdom
| | - Paul A Brogan
- UCL Great Ormond Street Institute of Child Health (Y.H., A.K., B.J., T.S.J., E.O., D.S., V.G., P.A.B., D.E.); Histopathology Department (O.O.), Great Ormond Street Hospital, London; Paediatric Neurology Department (A.A.M.), and Genetics Department (M.T., R.N.-E.), Bristol Royal Hospital for Children; Genetics Department (J.R.), Royal Devon and Exeter NHS Foundation Trust, Exeter; Centre for Translational Omics-GOSgene (H.J.W.), UCL GOS Institute of Child Health; and Centre for Adolescent Rheumatology Versus Arthritis (D.E.), London, United Kingdom
| | - Despina Eleftheriou
- UCL Great Ormond Street Institute of Child Health (Y.H., A.K., B.J., T.S.J., E.O., D.S., V.G., P.A.B., D.E.); Histopathology Department (O.O.), Great Ormond Street Hospital, London; Paediatric Neurology Department (A.A.M.), and Genetics Department (M.T., R.N.-E.), Bristol Royal Hospital for Children; Genetics Department (J.R.), Royal Devon and Exeter NHS Foundation Trust, Exeter; Centre for Translational Omics-GOSgene (H.J.W.), UCL GOS Institute of Child Health; and Centre for Adolescent Rheumatology Versus Arthritis (D.E.), London, United Kingdom
| |
Collapse
|
17
|
Lyle C, Richards S, Yasuda K, Napoleon MA, Walker J, Arinze N, Belghasem M, Vellard I, Yin W, Ravid JD, Zavaro E, Amraei R, Francis J, Phatak U, Rifkin IR, Rahimi N, Chitalia VC. c-Cbl targets PD-1 in immune cells for proteasomal degradation and modulates colorectal tumor growth. Sci Rep 2019; 9:20257. [PMID: 31882749 PMCID: PMC6934810 DOI: 10.1038/s41598-019-56208-1] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 12/04/2019] [Indexed: 12/11/2022] Open
Abstract
Casitas B lymphoma (c-Cbl) is an E3 ubiquitin ligase and a negative regulator of colorectal cancer (CRC). Despite its high expression in immune cells, the effect of c-Cbl on the tumor microenvironment remains poorly understood. Here we demonstrate that c-Cbl alters the tumor microenvironment and suppresses Programmed cell death-1 (PD-1) protein, an immune checkpoint receptor. Using syngeneic CRC xenografts, we observed significantly higher growth of xenografts and infiltrating immune cells in c-Cbl+/− compared to c-Cbl+/+ mice. Tumor-associated CD8+ T-lymphocytes and macrophages of c-Cbl+/− mice showed 2–3-fold higher levels of PD-1. Functionally, macrophages from c-Cbl+/− mice showed a 4–5-fold reduction in tumor phagocytosis, which was restored with an anti-PD-1 neutralizing antibody suggesting regulation of PD-1 by c-Cbl. Further mechanistic probing revealed that C-terminus of c-Cbl interacted with the cytoplasmic tail of PD-1. c-Cbl destabilized PD-1 through ubiquitination- proteasomal degradation depending on c-Cbl’s RING finger function. This data demonstrates c-Cbl as an E3 ligase of PD-1 and a regulator of tumor microenvironment, both of which were unrecognized components of its tumor suppressive activity. Advancing immune checkpoint and c-Cbl biology, our study prompts for probing of PD-1 regulation by c-Cbl in conditions driven by immune checkpoint abnormalities such as cancers and autoimmune diseases.
Collapse
Affiliation(s)
- Chimera Lyle
- Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Sean Richards
- Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Kei Yasuda
- Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | | | - Joshua Walker
- Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Nkiruka Arinze
- Department of Surgery, Boston University School of Medicine, Boston, MA, USA
| | - Mostafa Belghasem
- Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Irva Vellard
- Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Wenqing Yin
- Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | | | - Elias Zavaro
- Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Razie Amraei
- Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Jean Francis
- Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Uma Phatak
- Department of Surgery, Boston University School of Medicine, Boston, MA, USA
| | - Ian R Rifkin
- Department of Medicine, Boston University School of Medicine, Boston, MA, USA.,Veterans Affairs Boston Healthcare System, Boston, MA, USA
| | - Nader Rahimi
- Department of Surgery, Boston University School of Medicine, Boston, MA, USA
| | - Vipul C Chitalia
- Department of Medicine, Boston University School of Medicine, Boston, MA, USA. .,Veterans Affairs Boston Healthcare System, Boston, MA, USA. .,Global co-creation Labs, Institute of Medical Engineering and Sciences, Massachusetts Institute of Technology, Boston, MA, USA.
| |
Collapse
|
18
|
Lyle CL, Belghasem M, Chitalia VC. c-Cbl: An Important Regulator and a Target in Angiogenesis and Tumorigenesis. Cells 2019; 8:cells8050498. [PMID: 31126146 PMCID: PMC6563115 DOI: 10.3390/cells8050498] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Revised: 05/09/2019] [Accepted: 05/10/2019] [Indexed: 02/07/2023] Open
Abstract
Casitas B lineage lymphoma (c-Cbl) is a multifunctional protein with a ubiquitin E3 ligase activity capable of degrading diverse sets of proteins. Although previous work had focused mainly on c-Cbl mutations in humans with hematological malignancies, recent emerging evidence suggests a critical role of c-Cbl in angiogenesis and human solid organ tumors. The combination of its unique structure, modular function, and ability to channelize cues from a rich network of signaling cascades, empowers c-Cbl to assume a central role in these disease models. This review consolidates the structural and functional insights based on recent studies that highlight c-Cbl as a target with tantalizing therapeutic potential in various models of angiogenesis and tumorigenesis.
Collapse
Affiliation(s)
- Chimera L Lyle
- Department of Medicine, Boston University Medical Center, Boston, MA 02118, USA.
| | - Mostafa Belghasem
- Department of Pathology and Laboratory Medicine, Boston University Medical Center, Boston, MA 02118, USA.
| | - Vipul C Chitalia
- Department of Medicine, Boston University Medical Center, Boston, MA 02118, USA.
- Boston Veterans Affairs Healthcare System, Boston, MA 02118, USA.
| |
Collapse
|
19
|
SUMOylation of VEGFR2 regulates its intracellular trafficking and pathological angiogenesis. Nat Commun 2018; 9:3303. [PMID: 30120232 PMCID: PMC6098000 DOI: 10.1038/s41467-018-05812-2] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 07/12/2018] [Indexed: 12/22/2022] Open
Abstract
Regulation of VEGFR2 represents an important mechanism for the control of angiogenesis. VEGFR2 activity can be regulated by post-translational modifications such as ubiquitination and acetylation. However, whether VEGFR2 can be regulated by SUMOylation has not been investigated. Here we show that endothelial-specific deletion of the SUMO endopeptidase SENP1 reduces pathological angiogenesis and tissue repair during hindlimb ischemia, and VEGF-induced angiogenesis in the cornea, retina, and ear. SENP1-deficient endothelial cells show increased SUMOylation of VEGFR2 and impaired VEGFR2 signalling. SUMOylation at lysine 1270 retains VEGFR2 in the Golgi and reduces its surface expression, attenuating VEGFR2-dependent signalling. Moreover, we find that SENP1 is downregulated and VEGFR2 hyper-SUMOylated in diabetic settings and that expression of a non-SUMOylated form of VEGFR2 rescues angiogenic defects in diabetic mice. These results show that VEGFR2 is regulated by deSUMOylation during pathological angiogenesis, and propose SENP1 as a potential therapeutic target for the treatment of diabetes-associated angiogenesis.
Collapse
|
20
|
Kumaradevan S, Lee SY, Richards S, Lyle C, Zhao Q, Tapan U, Jiangliu Y, Ghumman S, Walker J, Belghasem M, Arinze N, Kuhnen A, Weinberg J, Francis J, Hartshorn K, Kolachalama VB, Cifuentes D, Rahimi N, Chitalia VC. c-Cbl Expression Correlates with Human Colorectal Cancer Survival and Its Wnt/β-Catenin Suppressor Function Is Regulated by Tyr371 Phosphorylation. THE AMERICAN JOURNAL OF PATHOLOGY 2018; 188:1921-1933. [PMID: 30029779 DOI: 10.1016/j.ajpath.2018.05.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 04/19/2018] [Accepted: 05/09/2018] [Indexed: 12/16/2022]
Abstract
The proto-oncogene β-catenin drives colorectal cancer (CRC) tumorigenesis. Casitas B-lineage lymphoma (c-Cbl) inhibits CRC tumor growth through targeting nuclear β-catenin by a poorly understood mechanism. In addition, the role of c-Cbl in human CRC remains largely underexplored. Using a novel quantitative histopathologic technique, we demonstrate that patients with high c-Cbl-expressing tumors had significantly better median survival (3.7 years) compared with low c-Cbl-expressing tumors (1.8 years; P = 0.0026) and were more than twice as likely to be alive at 3 years compared with low c-Cbl tumors (P = 0.0171). Our data further demonstrate that c-Cbl regulation of nuclear β-catenin requires phosphorylation of c-Cbl Tyr371 because its mutation compromises its ability to target β-catenin. The tyrosine 371 (Y371H) mutant interacted with but failed to ubiquitinate nuclear β-catenin. The nuclear localization of the c-Cbl-Y371H mutant contributed to its dominant negative effect on nuclear β-catenin. The biological importance of c-Cbl-Y371H was demonstrated in various systems, including a transgenic Wnt-8 zebrafish model. c-Cbl-Y371H mutant showed augmented Wnt/β-catenin signaling, increased Wnt target genes, angiogenesis, and CRC tumor growth. This study demonstrates a strong link between c-Cbl and overall survival of patients with CRC and provides new insights into a possible role of Tyr371 phosphorylation in Wnt/β-catenin regulation, which has important implications in tumor growth and angiogenesis in CRC.
Collapse
Affiliation(s)
- Sowmiya Kumaradevan
- Department of Medicine, Boston University School of Medicine, Boston, Massachusetts
| | - Shin Yin Lee
- Hematology and Oncology Section, Boston University School of Medicine, Boston, Massachusetts
| | - Sean Richards
- Department of Medicine, Boston University School of Medicine, Boston, Massachusetts
| | - Chimera Lyle
- Department of Medicine, Boston University School of Medicine, Boston, Massachusetts
| | - Qing Zhao
- Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, Massachusetts
| | - Umit Tapan
- Hematology and Oncology Section, Boston University School of Medicine, Boston, Massachusetts
| | - Yilan Jiangliu
- Department of Medicine, Boston University School of Medicine, Boston, Massachusetts
| | - Shmyle Ghumman
- Department of Medicine, Boston University School of Medicine, Boston, Massachusetts
| | - Joshua Walker
- Department of Medicine, Boston University School of Medicine, Boston, Massachusetts
| | - Mostafa Belghasem
- Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, Massachusetts
| | - Nkiruka Arinze
- Department of Surgery, Boston University School of Medicine, Boston, Massachusetts
| | - Angela Kuhnen
- Department of Surgery, Boston University School of Medicine, Boston, Massachusetts
| | - Janice Weinberg
- Department of Biostatistics, Boston University School of Public Health, Boston, Massachusetts
| | - Jean Francis
- Department of Medicine, Boston University School of Medicine, Boston, Massachusetts
| | - Kevan Hartshorn
- Hematology and Oncology Section, Boston University School of Medicine, Boston, Massachusetts
| | - Vijaya B Kolachalama
- Section of Computational Biomedicine, Boston University School of Medicine, Boston, Massachusetts
| | - Daniel Cifuentes
- Department of Biochemistry, Boston University School of Medicine, Boston, Massachusetts
| | - Nader Rahimi
- Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, Massachusetts
| | - Vipul C Chitalia
- Department of Medicine, Boston University School of Medicine, Boston, Massachusetts; Department of Surgery, Boston University School of Medicine, Boston, Massachusetts.
| |
Collapse
|
21
|
Pang Y, Wang K, Wang Y, Chenlin Z, Lei W, Zhang Y. Tumor-promoting and pro-angiogenic effects of roxarsone via VEGFR2/PLCγ/PKC signaling. Chem Biol Interact 2018; 292:110-120. [PMID: 30028964 DOI: 10.1016/j.cbi.2018.07.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 07/01/2018] [Accepted: 07/16/2018] [Indexed: 01/21/2023]
Abstract
Roxarsone is an organoarsenic feed additive used in livestock and poultry production that is released into the environment, where it poses a risk to human health. It is known to have a tumor-promoting effect that is brought about by pro-angiogenic factors such as vascular endothelial growth factor (VEGF) and it receptors (VEGFR). However, little information is available about the other signaling molecules that could be involved. This study aims to investigate the role of PLCγ/PKC signaling in roxarsone-induced angiogenesis in a mouse B16-F10 melanoma xenograft model and rat vascular endothelial cells (ECs). Results showed treatment with 5 mg/kg and 25 mg/kg roxarsone resulted in an obvious increase in the weight and volume of B16-F10 xenografts and PLCγ/PKC phosphorylation in a dose-dependent manner in C57BL/6 mice. SU5416, a VEGFR2 inhibitor, significantly attenuated the tumor growth induced by roxarsone. Further, 1.0 μmol/L roxarsone treatment in rat ECs was observed to significantly increase the optical density rate in the MTT assay, the number of BrdU-positive cells in the proliferation assay, the migration distance in the scratch test, and the number of meshes formed in the tube formation assay. In addition, treatment with 1.0 μmol/L roxarsone was associated with significantly higher phosphorylation of PLCγ/PKC than the control treatment. U73122, a PLCγ inhibitor, was found significantly to combat the effects of 1.0 μmol/L roxarsone on the ECs. Roxarsone is capable of promoting the growth of mouse B16-F10 xenografts and tube formation in vascular ECs. Moreover, VEGFR2/PLCγ/PKC signaling may play a regulatory role in in vivo and in vitro roxarsone-induced angiogenesis.
Collapse
Affiliation(s)
- Yanhua Pang
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, PR China.
| | - Kai Wang
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, PR China.
| | - Yujing Wang
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, PR China
| | - Zhongri Chenlin
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, PR China
| | - Weiwei Lei
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, PR China
| | - Yumei Zhang
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, PR China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious, Diseases and Zoonoses, Yangzhou, PR China.
| |
Collapse
|
22
|
c-Cbl mediates the degradation of tumorigenic nuclear β-catenin contributing to the heterogeneity in Wnt activity in colorectal tumors. Oncotarget 2018; 7:71136-71150. [PMID: 27661103 PMCID: PMC5342068 DOI: 10.18632/oncotarget.12107] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 08/21/2016] [Indexed: 01/04/2023] Open
Abstract
Despite the loss of Adenomatous Polyposis Coli (APC) in a majority of colorectal cancers (CRC), not all CRCs bear hallmarks of Wnt activation, such as nuclear β-catenin. This underscores the presence of other Wnt regulators that are important to define, given the pathogenic and prognostic roles of nuclear β-catenin in human CRC. Herein, we investigated the effect of Casitas B-lineage lymphoma (c-Cbl) on nuclear β-catenin, which is an oncoprotein upregulated in CRC due to loss-of-function APC or gain-of-function CTNNB1 mutations. Despite mechanistic rationale and recent discoveries of c-Cbl's mutations in solid tumors, little is known about its functional importance in CRC. Our study in a cohort of human CRC patients demonstrated an inverse correlation between nuclear β-catenin and c-Cbl. Further investigation showed that the loss of c-Cbl activity significantly enhanced nuclear β-catenin and CRC tumor growth in cell culture and a mouse xenograft model. c-Cbl interacted with and downregulated β-catenin in a manner that was independent of CTNNB1 or APC mutation status. This study demonstrates a previously unrecognized function of c-Cbl as a negative regulator of CRC.
Collapse
|
23
|
Smith GA, Fearnley GW, Abdul-Zani I, Wheatcroft SB, Tomlinson DC, Harrison MA, Ponnambalam S. Ubiquitination of basal VEGFR2 regulates signal transduction and endothelial function. Biol Open 2017; 6:1404-1415. [PMID: 28798148 PMCID: PMC5665470 DOI: 10.1242/bio.027896] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Accepted: 08/04/2017] [Indexed: 01/19/2023] Open
Abstract
Cell surface receptors can undergo recycling or proteolysis but the cellular decision-making events that sort between these pathways remain poorly defined. Vascular endothelial growth factor A (VEGF-A) and vascular endothelial growth factor receptor 2 (VEGFR2) regulate signal transduction and angiogenesis, but how signaling and proteolysis is regulated is not well understood. Here, we provide evidence that a pathway requiring the E1 ubiquitin-activating enzyme UBA1 controls basal VEGFR2 levels, hence metering plasma membrane receptor availability for the VEGF-A-regulated endothelial cell response. VEGFR2 undergoes VEGF-A-independent constitutive degradation via a UBA1-dependent ubiquitin-linked pathway. Depletion of UBA1 increased VEGFR2 recycling from endosome-to-plasma membrane and decreased proteolysis. Increased membrane receptor availability after UBA1 depletion elevated VEGF-A-stimulated activation of key signaling enzymes such as PLCγ1 and ERK1/2. Although UBA1 depletion caused an overall decrease in endothelial cell proliferation, surviving cells showed greater VEGF-A-stimulated responses such as cell migration and tubulogenesis. Our study now suggests that a ubiquitin-linked pathway regulates the balance between receptor recycling and degradation which in turn impacts on the intensity and duration of VEGF-A-stimulated signal transduction and the endothelial response.
Collapse
Affiliation(s)
- Gina A Smith
- Endothelial Cell Biology Unit, School of Molecular & Cellular Biology, University of Leeds, Leeds LS2 9JT, UK
| | - Gareth W Fearnley
- Endothelial Cell Biology Unit, School of Molecular & Cellular Biology, University of Leeds, Leeds LS2 9JT, UK
| | - Izma Abdul-Zani
- Endothelial Cell Biology Unit, School of Molecular & Cellular Biology, University of Leeds, Leeds LS2 9JT, UK
| | - Stephen B Wheatcroft
- Leeds Institute of Cardiovascular & Metabolic Medicine, Faculty of Medicine & Health, University of Leeds, Leeds LS2 9JT, UK
| | - Darren C Tomlinson
- Endothelial Cell Biology Unit, School of Molecular & Cellular Biology, University of Leeds, Leeds LS2 9JT, UK
| | | | - Sreenivasan Ponnambalam
- Endothelial Cell Biology Unit, School of Molecular & Cellular Biology, University of Leeds, Leeds LS2 9JT, UK
| |
Collapse
|
24
|
Smith G, Tomlinson D, Harrison M, Ponnambalam S. Chapter Eight - Ubiquitin-Mediated Regulation of Cellular Responses to Vascular Endothelial Growth Factors. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2016; 141:313-38. [DOI: 10.1016/bs.pmbts.2016.02.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
25
|
Arafa E, Bondzie PA, Rezazadeh K, Meyer RD, Hartsough E, Henderson JM, Schwartz JH, Chitalia V, Rahimi N. TMIGD1 is a novel adhesion molecule that protects epithelial cells from oxidative cell injury. THE AMERICAN JOURNAL OF PATHOLOGY 2015; 185:2757-67. [PMID: 26342724 DOI: 10.1016/j.ajpath.2015.06.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Revised: 05/18/2015] [Accepted: 06/18/2015] [Indexed: 10/23/2022]
Abstract
Oxidative damage to renal tubular epithelial cells is a fundamental pathogenic mechanism implicated in both acute kidney injury and chronic kidney diseases. Because epithelial cell survival influences the outcome of acute kidney injury and chronic kidney diseases, identifying its molecular regulators could provide new insight into pathobiology and possible new therapeutic strategies for these diseases. We have identified transmembrane and immunoglobulin domain-containing 1 (TMIGD1) as a novel adhesion molecule, which is highly conserved in humans and other species. TMIGD1 is expressed in renal tubular epithelial cells and promotes cell survival. The extracellular domain of TMIGD1 contains two putative immunoglobulin domains and mediates self-dimerization. Our data suggest that TMIGD1 regulates transepithelial electric resistance and permeability of renal epithelial cells. TMIGD1 controls cell migration, cell morphology, and protects renal epithelial cells from oxidative- and nutrient-deprivation-induced cell injury. Hydrogen peroxide-induced oxidative cell injury downregulates TMIGD1 expression and targets it for ubiquitination. Moreover, TMIGD1 expression is significantly affected in both acute kidney injury and in deoxy-corticosterone acetate and sodium chloride (deoxy-corticosterone acetate salt)-induced chronic hypertensive kidney disease mouse models. Taken together, we have identified TMIGD1 as a novel cell adhesion molecule expressed in kidney epithelial cells that protects kidney epithelial cells from oxidative cell injury to promote cell survival.
Collapse
Affiliation(s)
- Emad Arafa
- Department of Pathology, Boston University Medical Campus, Boston, Massachusetts
| | - Philip A Bondzie
- Department of Pathology, Boston University Medical Campus, Boston, Massachusetts
| | - Kobra Rezazadeh
- Department of Pathology, Boston University Medical Campus, Boston, Massachusetts
| | - Rosana D Meyer
- Department of Pathology, Boston University Medical Campus, Boston, Massachusetts
| | - Edward Hartsough
- Department of Pathology, Boston University Medical Campus, Boston, Massachusetts
| | - Joel M Henderson
- Department of Pathology, Boston University Medical Campus, Boston, Massachusetts
| | - John H Schwartz
- Renal Section, Department of Medicine, Boston Medical Center, Boston University School of Medicine, Boston, Massachusetts
| | - Vipul Chitalia
- Renal Section, Department of Medicine, Boston Medical Center, Boston University School of Medicine, Boston, Massachusetts
| | - Nader Rahimi
- Department of Pathology, Boston University Medical Campus, Boston, Massachusetts; Department of Ophthalmology, School of Medicine, Boston University Medical Campus, Boston, Massachusetts.
| |
Collapse
|
26
|
Ji W, Li Y, He Y, Yin M, Zhou HJ, Boggon TJ, Zhang H, Min W. AIP1 Expression in Tumor Niche Suppresses Tumor Progression and Metastasis. Cancer Res 2015; 75:3492-504. [PMID: 26139244 DOI: 10.1158/0008-5472.can-15-0088] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Accepted: 06/12/2015] [Indexed: 11/16/2022]
Abstract
Studies from tumor cells suggest that tumor-suppressor AIP1 inhibits epithelial-mesenchymal transition (EMT). However, the role of AIP1 in the tumor microenvironment has not been examined. We show that a global or vascular endothelial cell (EC)-specific deletion of the AIP1 gene in mice augments tumor growth and metastasis in melanoma and breast cancer models. AIP1-deficient vascular environment not only enhances tumor neovascularization and increases premetastatic niche formation, but also secretes tumor EMT-promoting factors. These effects from AIP1 loss are associated with increased VEGFR2 signaling in the vascular EC and could be abrogated by systemic administration of VEGFR2 kinase inhibitors. Mechanistically, AIP1 blocks VEGFR2-dependent signaling by directly binding to the phosphotyrosine residues within the activation loop of VEGFR2. Our data reveal that AIP1, by inhibiting VEGFR2-dependent signaling in tumor niche, suppresses tumor EMT switch, tumor angiogenesis, and tumor premetastatic niche formation to limit tumor growth and metastasis.
Collapse
Affiliation(s)
- Weidong Ji
- The First Affiliated Hospital, Center for Translational Medicine, Sun Yat-sen University, Guangzhou, China
| | - Yonghao Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Yun He
- School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Mingzhu Yin
- Department of Pathology, Vascular Biology Program/Yale Cancer Center, Yale University School of Medicine, New Haven, Connecticut
| | - Huanjiao Jenny Zhou
- Department of Pathology, Vascular Biology Program/Yale Cancer Center, Yale University School of Medicine, New Haven, Connecticut
| | - Titus J Boggon
- Department of Pharmacology, Yale University School of Medicine, New Haven, Connecticut
| | - Haifeng Zhang
- Department of Pathology, Vascular Biology Program/Yale Cancer Center, Yale University School of Medicine, New Haven, Connecticut
| | - Wang Min
- The First Affiliated Hospital, Center for Translational Medicine, Sun Yat-sen University, Guangzhou, China. Department of Pathology, Vascular Biology Program/Yale Cancer Center, Yale University School of Medicine, New Haven, Connecticut.
| |
Collapse
|
27
|
Wang J, Li L, Jiang H. c-Cbl inhibition: A novel therapeutic approach for attenuating myocardial ischemia and reperfusion injury. Int J Cardiol 2015; 186:50-1. [PMID: 25804470 DOI: 10.1016/j.ijcard.2015.03.254] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2015] [Accepted: 03/17/2015] [Indexed: 11/27/2022]
Affiliation(s)
- Jichun Wang
- Department of Cardiology, Renmin Hospital of Wuhan University, Cardiovascular Research Institute of Wuhan University, Jiefang Road 238, Wuchang, 430060 Wuhan, PR China
| | - Li Li
- Department of Cardiology, The First College of Clinical Medical Sciences, China Three Gorges University, Yichang, Hubei, PR China
| | - Hong Jiang
- Department of Cardiology, Renmin Hospital of Wuhan University, Cardiovascular Research Institute of Wuhan University, Jiefang Road 238, Wuchang, 430060 Wuhan, PR China.
| |
Collapse
|
28
|
Shivanna S, Harrold I, Shashar M, Meyer R, Kiang C, Francis J, Zhao Q, Feng H, Edelman ER, Rahimi N, Chitalia VC. The c-Cbl ubiquitin ligase regulates nuclear β-catenin and angiogenesis by its tyrosine phosphorylation mediated through the Wnt signaling pathway. J Biol Chem 2015; 290:12537-46. [PMID: 25784557 DOI: 10.1074/jbc.m114.616623] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Indexed: 01/08/2023] Open
Abstract
Wnt signaling plays important roles in both the tumor-induced angiogenesis and tumorigenesis through the transcriptionally active nuclear β-catenin. Recently, c-Cbl was identified as a unique E3 ubiquitin ligase targeting the active nuclear β-catenin. However, little is known about the molecular mechanisms by which c-Cbl regulates ubiquitination and degradation of active β-catenin. Here, we demonstrate that Wnt activation promotes the phosphorylation of c-Cbl at tyrosine 731(Tyr-731), which increases c-Cbl dimerization and binding to β-catenin. Tyr-731 phosphorylation and dimerization mediate c-Cbl nuclear translocation and lead to the degradation of nuclearly active β-catenin in the Wnt-on phase. c-Cbl activation also inhibits expression of the pro-angiogenic Wnt targets, IL-8 and VEGF. Phospho-Tyr-731-inactive mutant c-Cbl (Y731F) enhances and phosphomimetic mutant c-Cbl (Y731E) suppresses angiogenesis in zebrafish. Taken together, we have identified a novel mechanism for the regulation of active nuclear β-catenin by c-Cbl and its critical role in angiogenesis. This mechanism can be further explored to modulate both the pathological angiogenesis and the tumorigenesis.
Collapse
Affiliation(s)
| | - Itrat Harrold
- Section of Hematology and Medical Oncology, Departments of Pharmacology and Medicine, and
| | | | - Rosanna Meyer
- the Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, Massachusetts 02118
| | - Chrystelle Kiang
- the Institute of Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, and the Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115
| | | | - Qing Zhao
- the Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, Massachusetts 02118
| | - Hui Feng
- Section of Hematology and Medical Oncology, Departments of Pharmacology and Medicine, and
| | - Elazer R Edelman
- the Institute of Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, and the Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115
| | - Nader Rahimi
- the Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, Massachusetts 02118
| | | |
Collapse
|
29
|
Rahimi N, Costello CE. Emerging roles of post-translational modifications in signal transduction and angiogenesis. Proteomics 2014; 15:300-9. [PMID: 25161153 DOI: 10.1002/pmic.201400183] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2014] [Revised: 07/14/2014] [Accepted: 08/20/2014] [Indexed: 01/02/2023]
Abstract
The vascular endothelial growth factor receptor-2 (VEGFR-2) belongs to the family of receptor tyrosine kinases and is a key player in vasculogenesis and pathological angiogenesis. An emerging picture of PTMs of VEGFR-2 suggests that they play central roles in generating a highly dynamic and complex signaling system that regulates key angiogenic responses ranging from endothelial cell differentiation, proliferation, migration to permeability. Recent MS analysis of VEGFR-2 uncovered previously unrecognized PTMs on VEGFR-2 with a distinct function. The ligand binding extracellular domain of VEGFR-2 is composed of seven immunoglobulin-like domains highly decorated with N-glycosylation, while its cytoplasmic domain is subject to multiple PTMs including Tyr, Ser/Thr phosphorylation, Arg and Lys methylation, acetylation and ubiquitination. Here we review the PTMs on VEGFR-2, their importance in angiogenic signaling relays and possible novel therapeutic potentials.
Collapse
Affiliation(s)
- Nader Rahimi
- Department of Pathology, Boston University School of Medicine, Boston, MA, USA
| | | |
Collapse
|
30
|
Pires IM, Blokland NJG, Broos AWT, Poujade FA, Senra JM, Eccles SA, Span PN, Harvey AJ, Hammond EM. HIF-1α-independent hypoxia-induced rapid PTK6 stabilization is associated with increased motility and invasion. Cancer Biol Ther 2014; 15:1350-7. [PMID: 25019382 PMCID: PMC4130728 DOI: 10.4161/cbt.29822] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 06/25/2014] [Accepted: 07/02/2014] [Indexed: 12/30/2022] Open
Abstract
PTK6/Brk is a non-receptor tyrosine kinase overexpressed in cancer. Here we demonstrate that cytosolic PTK6 is rapidly and robustly induced in response to hypoxic conditions in a HIF-1-independent manner. Furthermore, a proportion of hypoxic PTK6 subsequently re-localized to the cell membrane. We observed that the rapid stabilization of PTK6 is associated with a decrease in PTK6 ubiquitylation and we have identified c-Cbl as a putative PTK6 E3 ligase in normoxia. The consequences of hypoxia-induced PTK6 stabilization and subcellular re-localization to the plasma membrane include increased cell motility and invasion, suggesting PTK6 targeting as a therapeutic approach to reduce hypoxia-regulated metastatic potential. This could have particular significance for breast cancer patients with triple negative disease.
Collapse
Affiliation(s)
- Isabel M Pires
- CR-UK/MRC Oxford Institute for Radiation Oncology; Department of Oncology; University of Oxford; Oxford, UK
- School of Biological, Biomedical and Environmental Sciences; University of Hull; Hull, UK
| | - Nina JG Blokland
- CR-UK/MRC Oxford Institute for Radiation Oncology; Department of Oncology; University of Oxford; Oxford, UK
| | - Agnieke WT Broos
- CR-UK/MRC Oxford Institute for Radiation Oncology; Department of Oncology; University of Oxford; Oxford, UK
| | - Flore-Anne Poujade
- School of Biological, Biomedical and Environmental Sciences; University of Hull; Hull, UK
| | - Joana M Senra
- CR-UK/MRC Oxford Institute for Radiation Oncology; Department of Oncology; University of Oxford; Oxford, UK
| | - Suzanne A Eccles
- Cancer Research UK Cancer Therapeutics Unit; The Institute of Cancer Research; Sutton, UK
| | - Paul N Span
- Radboud University Nijmegen Medical Centre; Radiation Oncology; Nijmegen, the Netherlands
| | - Amanda J Harvey
- Biosciences; Brunel Institute for Cancer Genetics and Pharmacogenomics; Brunel University; Uxbridge, UK
| | - Ester M Hammond
- CR-UK/MRC Oxford Institute for Radiation Oncology; Department of Oncology; University of Oxford; Oxford, UK
| |
Collapse
|
31
|
Yamada KH, Nakajima Y, Geyer M, Wary KK, Ushio-Fukai M, Komarova Y, Malik AB. KIF13B regulates angiogenesis through Golgi to plasma membrane trafficking of VEGFR2. J Cell Sci 2014; 127:4518-30. [PMID: 25128562 DOI: 10.1242/jcs.156109] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Although the trafficking of newly synthesized VEGFR2 to the plasma membrane is a key determinant of angiogenesis, the molecular mechanisms of Golgi to plasma membrane trafficking are unknown. Here, we have identified a key role of the kinesin family plus-end molecular motor KIF13B in delivering VEGFR2 cargo from the Golgi to the endothelial cell surface. KIF13B is shown to interact directly with VEGFR2 on microtubules. We also observed that overexpression of truncated versions of KIF13B containing the binding domains that interact with VEGFR2 inhibited VEGF-induced capillary tube formation. KIF13B depletion prevented VEGF-mediated endothelial migration, capillary tube formation and neo-vascularization in mice. Impairment in trafficking induced by knockdown of KIF13B shunted VEGFR2 towards the lysosomal degradation pathway. Thus, KIF13B is an essential molecular motor required for the trafficking of VEGFR2 from the Golgi, and its delivery to the endothelial cell surface mediates angiogenesis.
Collapse
Affiliation(s)
- Kaori H Yamada
- Department of Pharmacology, University of Illinois College of Medicine, Chicago, IL 60612, USA Center of Lung and Vascular Biology, University of Illinois College of Medicine, Chicago, IL 60612, USA
| | - Yuki Nakajima
- Department of Pharmacology, University of Illinois College of Medicine, Chicago, IL 60612, USA Center of Lung and Vascular Biology, University of Illinois College of Medicine, Chicago, IL 60612, USA
| | - Melissa Geyer
- Department of Pharmacology, University of Illinois College of Medicine, Chicago, IL 60612, USA Center of Lung and Vascular Biology, University of Illinois College of Medicine, Chicago, IL 60612, USA
| | - Kishore K Wary
- Department of Pharmacology, University of Illinois College of Medicine, Chicago, IL 60612, USA Center of Lung and Vascular Biology, University of Illinois College of Medicine, Chicago, IL 60612, USA
| | - Masuko Ushio-Fukai
- Department of Pharmacology, University of Illinois College of Medicine, Chicago, IL 60612, USA
| | - Yulia Komarova
- Department of Pharmacology, University of Illinois College of Medicine, Chicago, IL 60612, USA Center of Lung and Vascular Biology, University of Illinois College of Medicine, Chicago, IL 60612, USA
| | - Asrar B Malik
- Department of Pharmacology, University of Illinois College of Medicine, Chicago, IL 60612, USA Center of Lung and Vascular Biology, University of Illinois College of Medicine, Chicago, IL 60612, USA
| |
Collapse
|
32
|
Rafiq K, Kolpakov MA, Seqqat R, Guo J, Guo X, Qi Z, Yu D, Mohapatra B, Zutshi N, An W, Band H, Sanjay A, Houser SR, Sabri A. c-Cbl inhibition improves cardiac function and survival in response to myocardial ischemia. Circulation 2014; 129:2031-43. [PMID: 24583314 PMCID: PMC4045410 DOI: 10.1161/circulationaha.113.007004] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND The proto-oncogene Casitas b-lineage lymphoma (c-Cbl) is an adaptor protein with an intrinsic E3 ubiquitin ligase activity that targets receptor and nonreceptor tyrosine kinases, resulting in their ubiquitination and downregulation. However, the function of c-Cbl in the control of cardiac function is currently unknown. In this study, we examined the role of c-Cbl in myocyte death and cardiac function after myocardial ischemia. METHODS AND RESULTS We show increased c-Cbl expression in human ischemic and dilated cardiomyopathy hearts and in response to pathological stress stimuli in mice. c-Cbl-deficient mice demonstrated a more robust functional recovery after myocardial ischemia/reperfusion injury and significantly reduced myocyte apoptosis and improved cardiac function. Ubiquitination and downregulation of key survival c-Cbl targets, epidermal growth factor receptors and focal adhesion kinase, were significantly reduced in c-Cbl knockout mice. Inhibition of c-Cbl expression or its ubiquitin ligase activity in cardiac myocytes offered protection against H2O2 stress. Interestingly, c-Cbl deletion reduced the risk of death and increased cardiac functional recovery after chronic myocardial ischemia. This beneficial effect of c-Cbl deletion was associated with enhanced neoangiogenesis and increased expression of vascular endothelial growth factor-a and vascular endothelial growth factor receptor type 2 in the infarcted region. CONCLUSIONS c-Cbl activation promotes myocyte apoptosis, inhibits angiogenesis, and causes adverse cardiac remodeling after myocardial infarction. These findings point to c-Cbl as a potential therapeutic target for the maintenance of cardiac function and remodeling after myocardial ischemia.
Collapse
Affiliation(s)
- Khadija Rafiq
- From the Cardiovascular Research Center and Department of Physiology, Temple University School of Medicine, Philadelphia, PA (K.R., M.A.K., R.S., J.G., X.G., Z.Q., D.Y., S.R.H., A. Sabri); Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha (B.M., N.Z., W.A., H.B.); and Department of Surgery, University of Connecticut Health Center, Farmington (A. Sanjay)
| | - Mikhail A Kolpakov
- From the Cardiovascular Research Center and Department of Physiology, Temple University School of Medicine, Philadelphia, PA (K.R., M.A.K., R.S., J.G., X.G., Z.Q., D.Y., S.R.H., A. Sabri); Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha (B.M., N.Z., W.A., H.B.); and Department of Surgery, University of Connecticut Health Center, Farmington (A. Sanjay)
| | - Rachid Seqqat
- From the Cardiovascular Research Center and Department of Physiology, Temple University School of Medicine, Philadelphia, PA (K.R., M.A.K., R.S., J.G., X.G., Z.Q., D.Y., S.R.H., A. Sabri); Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha (B.M., N.Z., W.A., H.B.); and Department of Surgery, University of Connecticut Health Center, Farmington (A. Sanjay)
| | - Jianfen Guo
- From the Cardiovascular Research Center and Department of Physiology, Temple University School of Medicine, Philadelphia, PA (K.R., M.A.K., R.S., J.G., X.G., Z.Q., D.Y., S.R.H., A. Sabri); Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha (B.M., N.Z., W.A., H.B.); and Department of Surgery, University of Connecticut Health Center, Farmington (A. Sanjay)
| | - Xinji Guo
- From the Cardiovascular Research Center and Department of Physiology, Temple University School of Medicine, Philadelphia, PA (K.R., M.A.K., R.S., J.G., X.G., Z.Q., D.Y., S.R.H., A. Sabri); Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha (B.M., N.Z., W.A., H.B.); and Department of Surgery, University of Connecticut Health Center, Farmington (A. Sanjay)
| | - Zhao Qi
- From the Cardiovascular Research Center and Department of Physiology, Temple University School of Medicine, Philadelphia, PA (K.R., M.A.K., R.S., J.G., X.G., Z.Q., D.Y., S.R.H., A. Sabri); Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha (B.M., N.Z., W.A., H.B.); and Department of Surgery, University of Connecticut Health Center, Farmington (A. Sanjay)
| | - Daohai Yu
- From the Cardiovascular Research Center and Department of Physiology, Temple University School of Medicine, Philadelphia, PA (K.R., M.A.K., R.S., J.G., X.G., Z.Q., D.Y., S.R.H., A. Sabri); Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha (B.M., N.Z., W.A., H.B.); and Department of Surgery, University of Connecticut Health Center, Farmington (A. Sanjay)
| | - Bhopal Mohapatra
- From the Cardiovascular Research Center and Department of Physiology, Temple University School of Medicine, Philadelphia, PA (K.R., M.A.K., R.S., J.G., X.G., Z.Q., D.Y., S.R.H., A. Sabri); Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha (B.M., N.Z., W.A., H.B.); and Department of Surgery, University of Connecticut Health Center, Farmington (A. Sanjay)
| | - Neha Zutshi
- From the Cardiovascular Research Center and Department of Physiology, Temple University School of Medicine, Philadelphia, PA (K.R., M.A.K., R.S., J.G., X.G., Z.Q., D.Y., S.R.H., A. Sabri); Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha (B.M., N.Z., W.A., H.B.); and Department of Surgery, University of Connecticut Health Center, Farmington (A. Sanjay)
| | - Wei An
- From the Cardiovascular Research Center and Department of Physiology, Temple University School of Medicine, Philadelphia, PA (K.R., M.A.K., R.S., J.G., X.G., Z.Q., D.Y., S.R.H., A. Sabri); Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha (B.M., N.Z., W.A., H.B.); and Department of Surgery, University of Connecticut Health Center, Farmington (A. Sanjay)
| | - Hamid Band
- From the Cardiovascular Research Center and Department of Physiology, Temple University School of Medicine, Philadelphia, PA (K.R., M.A.K., R.S., J.G., X.G., Z.Q., D.Y., S.R.H., A. Sabri); Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha (B.M., N.Z., W.A., H.B.); and Department of Surgery, University of Connecticut Health Center, Farmington (A. Sanjay)
| | - Archana Sanjay
- From the Cardiovascular Research Center and Department of Physiology, Temple University School of Medicine, Philadelphia, PA (K.R., M.A.K., R.S., J.G., X.G., Z.Q., D.Y., S.R.H., A. Sabri); Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha (B.M., N.Z., W.A., H.B.); and Department of Surgery, University of Connecticut Health Center, Farmington (A. Sanjay)
| | - Steven R Houser
- From the Cardiovascular Research Center and Department of Physiology, Temple University School of Medicine, Philadelphia, PA (K.R., M.A.K., R.S., J.G., X.G., Z.Q., D.Y., S.R.H., A. Sabri); Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha (B.M., N.Z., W.A., H.B.); and Department of Surgery, University of Connecticut Health Center, Farmington (A. Sanjay)
| | - Abdelkarim Sabri
- From the Cardiovascular Research Center and Department of Physiology, Temple University School of Medicine, Philadelphia, PA (K.R., M.A.K., R.S., J.G., X.G., Z.Q., D.Y., S.R.H., A. Sabri); Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha (B.M., N.Z., W.A., H.B.); and Department of Surgery, University of Connecticut Health Center, Farmington (A. Sanjay).
| |
Collapse
|
33
|
Hartsough EJ, Meyer RD, Chitalia V, Jiang Y, Marquez VE, Zhdanova IV, Weinberg J, Costello CE, Rahimi N. Lysine methylation promotes VEGFR-2 activation and angiogenesis. Sci Signal 2013; 6:ra104. [PMID: 24300896 PMCID: PMC4108444 DOI: 10.1126/scisignal.2004289] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Activation of vascular endothelial growth factor receptor-2 (VEGFR-2), an endothelial cell receptor tyrosine kinase, promotes tumor angiogenesis and ocular neovascularization. We report the methylation of VEGFR-2 at multiple Lys and Arg residues, including Lys(1041), a residue that is proximal to the activation loop of the kinase domain. Methylation of VEGFR-2 was independent of ligand binding and was not regulated by ligand stimulation. Methylation of Lys(1041) enhanced tyrosine phosphorylation and kinase activity in response to ligands. Additionally, interfering with the methylation of VEGFR-2 by pharmacological inhibition or by site-directed mutagenesis revealed that methylation of Lys(1041) was required for VEGFR-2-mediated angiogenesis in zebrafish and tumor growth in mice. We propose that methylation of Lys(1041) promotes the activation of VEGFR-2 and that similar posttranslational modification could also regulate the activity of other receptor tyrosine kinases.
Collapse
Affiliation(s)
- Edward J. Hartsough
- Departments of Pathology and Ophthalmology, School of Medicine, Boston University Medical Campus, Boston, MA 02118, USA
| | - Rosana D. Meyer
- Departments of Pathology and Ophthalmology, School of Medicine, Boston University Medical Campus, Boston, MA 02118, USA
| | - Vipul Chitalia
- Harvard-MIT Division of Health Science and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Yan Jiang
- Department of Biochemistry and Center for Biomedical Mass Spectrometry, School of Medicine, Boston University Medical Campus, Boston, MA 02118, USA
| | - Victor E. Marquez
- Chemical Biology Laboratory, National Cancer Institute at Frederick, Frederick, MD 21702, USA
| | - Irina V. Zhdanova
- Department of Anatomy and Neurobiology, Boston University Medical Campus, Boston, MA 02118, USA
| | - Janice Weinberg
- School of Public Health, Boston University Medical Campus, Boston, MA 02118, USA
| | - Catherine E. Costello
- Department of Biochemistry and Center for Biomedical Mass Spectrometry, School of Medicine, Boston University Medical Campus, Boston, MA 02118, USA
| | - Nader Rahimi
- Departments of Pathology and Ophthalmology, School of Medicine, Boston University Medical Campus, Boston, MA 02118, USA
| |
Collapse
|
34
|
Hartsough EJ, Meyer RD, Chitalia V, Jiang Y, Marquez VE, Zhdanova IV, Weinberg J, Costello CE, Rahimi N. Lysine methylation promotes VEGFR-2 activation and angiogenesis. Sci Signal 2013. [PMID: 24300896 DOI: 10.1126/scisignal.200415] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2023]
Abstract
Activation of vascular endothelial growth factor receptor-2 (VEGFR-2), an endothelial cell receptor tyrosine kinase, promotes tumor angiogenesis and ocular neovascularization. We report the methylation of VEGFR-2 at multiple Lys and Arg residues, including Lys(1041), a residue that is proximal to the activation loop of the kinase domain. Methylation of VEGFR-2 was independent of ligand binding and was not regulated by ligand stimulation. Methylation of Lys(1041) enhanced tyrosine phosphorylation and kinase activity in response to ligands. Additionally, interfering with the methylation of VEGFR-2 by pharmacological inhibition or by site-directed mutagenesis revealed that methylation of Lys(1041) was required for VEGFR-2-mediated angiogenesis in zebrafish and tumor growth in mice. We propose that methylation of Lys(1041) promotes the activation of VEGFR-2 and that similar posttranslational modification could also regulate the activity of other receptor tyrosine kinases.
Collapse
Affiliation(s)
- Edward J Hartsough
- 1Departments of Pathology and Ophthalmology, School of Medicine, Boston University Medical Campus, Boston, MA 02118, USA
| | | | | | | | | | | | | | | | | |
Collapse
|
35
|
Snoek BC, Wilt LHAMD, Jansen G, Peters GJ. Role of E3 ubiquitin ligases in lung cancer. World J Clin Oncol 2013; 4:58-69. [PMID: 23936758 PMCID: PMC3708064 DOI: 10.5306/wjco.v4.i3.58] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Revised: 01/10/2013] [Accepted: 06/06/2013] [Indexed: 02/06/2023] Open
Abstract
E3 ubiquitin ligases are a large family of proteins that catalyze the ubiquitination of many protein substrates for targeted degradation by the 26S proteasome. Therefore, E3 ubiquitin ligases play an essential role in a variety of biological processes including cell cycle regulation, proliferation and apoptosis. E3 ubiquitin ligases are often found overexpressed in human cancers, including lung cancer, and their deregulation has been shown to contribute to cancer development. However, the lack of specific inhibitors in clinical trials is a major issue in targeting E3 ubiquitin ligases with currently only one E3 ubiquitin ligase inhibitor being tested in the clinical setting. In this review, we focus on E3 ubiquitin ligases that have been found deregulated in lung cancer. Furthermore, we discuss the processes in which they are involved and evaluate them as potential anti-cancer targets. By better understanding the mechanisms by which E3 ubiquitin ligases regulate biological processes and their exact role in carcinogenesis, we can improve the development of specific E3 ubiquitin ligase inhibitors and pave the way for novel treatment strategies for cancer patients.
Collapse
|
36
|
Chitalia V, Shivanna S, Martorell J, Meyer R, Edelman E, Rahimi N. c-Cbl, a ubiquitin E3 ligase that targets active β-catenin: a novel layer of Wnt signaling regulation. J Biol Chem 2013; 288:23505-17. [PMID: 23744067 DOI: 10.1074/jbc.m113.473801] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Regulation of transcriptionally active nuclear β-catenin during the Wnt-on phase is crucial to ensure controlled induction of Wnt target genes. Several ubiquitin E3 ligases are known to regulate cytosolic β-catenin during the Wnt-off phase, but little is known about the fate of active nuclear β-catenin in the Wnt-on phase. We now describe ubiquitination of active β-catenin in the Wnt-on phase by a RING finger ubiquitin E3 ligase, Casitas B-lineage lymphoma (c-Cbl) in endothelial cells. c-Cbl binds preferentially to nuclearly active β-catenin in the Wnt-on phase via the armadillo repeat region. Wild-type c-Cbl suppresses and E3 ligase-deficient c-Cbl-70Z increases Wnt signaling. Wnt induces nuclear translocation of c-Cbl where it ubiquitinates nuclear β-catenin. Deletion of the c-Cbl UBA domain abrogates its dimerization, binding to β-catenin, Wnt-induced c-Cbl nuclear translocation, and ubiquitination of nuclear β-catenin. c-Cbl activity inhibits pro-angiogenic Wnt targets IL-8 and VEGF levels and angiogenesis in a β-catenin-dependent manner. This study defines for the first time c-Cbl as a ubiquitin E3 ligase that targets nuclearly active β-catenin in the Wnt-on phase and uncovers a novel layer of regulation of Wnt signaling.
Collapse
Affiliation(s)
- Vipul Chitalia
- Renal Section, Department of Medicine, Boston Medical Center, Boston University School of Medicine, Boston, Massachusetts 02118, USA.
| | | | | | | | | | | |
Collapse
|
37
|
Nakayama M, Berger P. Coordination of VEGF receptor trafficking and signaling by coreceptors. Exp Cell Res 2013; 319:1340-7. [PMID: 23499743 DOI: 10.1016/j.yexcr.2013.03.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Revised: 02/25/2013] [Accepted: 03/02/2013] [Indexed: 02/01/2023]
Abstract
During development, regeneration and in certain pathological settings, the vasculature is expanded and remodeled substantially. Proper morphogenesis and function of blood vessels are essential in multicellular organisms. Upon stimulation with growth factors including vascular endothelial growth factors (VEGFs), the activation, internalization and sorting of receptor tyrosine kinases (RTKs) orchestrate developmental processes and the homeostatic maintenance of all organs including the vasculature. Previously, RTK signaling was thought to occur exclusively at the plasma membrane, a process that was subsequently terminated by endocytosis and receptor degradation. However, this model turned out to be an oversimplification and there is now a substantial amount of reports indicating that receptor internalization and trafficking to intracellular compartments depends on coreceptors leading to the activation of specific signaling pathways. Here we review the latest findings concerning endocytosis and intracellular trafficking of VEGFRs. The body of evidence is compelling that VEGF receptor trafficking is coordinated with other proteins such as Neuropilin-1, ephrin-B2, VE-cadherin and protein phosphatases.
Collapse
Affiliation(s)
- Masanori Nakayama
- Max-Planck-Institute for Molecular Biomedicine, Department of Tissue Morphogenesis, D-48149 Münster, Germany
| | | |
Collapse
|
38
|
Bruns AF, Yuldasheva N, Latham AM, Bao L, Pellet-Many C, Frankel P, Stephen SL, Howell GJ, Wheatcroft SB, Kearney MT, Zachary IC, Ponnambalam S. A heat-shock protein axis regulates VEGFR2 proteolysis, blood vessel development and repair. PLoS One 2012; 7:e48539. [PMID: 23139789 PMCID: PMC3491040 DOI: 10.1371/journal.pone.0048539] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2012] [Accepted: 09/26/2012] [Indexed: 11/18/2022] Open
Abstract
Vascular endothelial growth factor A (VEGF-A) binds to the VEGFR2 receptor tyrosine kinase, regulating endothelial function, vascular physiology and angiogenesis. However, the mechanism underlying VEGFR2 turnover and degradation in this response is unclear. Here, we tested a role for heat-shock proteins in regulating the presentation of VEGFR2 to a degradative pathway. Pharmacological inhibition of HSP90 stimulated VEGFR2 degradation in primary endothelial cells and blocked VEGF-A-stimulated intracellular signaling via VEGFR2. HSP90 inhibition stimulated the formation of a VEGFR2-HSP70 complex. Clathrin-mediated VEGFR2 endocytosis is required for this HSP-linked degradative pathway for targeting VEGFR2 to the endosome-lysosome system. HSP90 perturbation selectively inhibited VEGF-A-stimulated human endothelial cell migration in vitro. A mouse femoral artery model showed that HSP90 inhibition also blocked blood vessel repair in vivo consistent with decreased endothelial regeneration. Depletion of either HSP70 or HSP90 caused defects in blood vessel formation in a transgenic zebrafish model. We conclude that perturbation of the HSP70-HSP90 heat-shock protein axis stimulates degradation of endothelial VEGFR2 and modulates VEGF-A-stimulated intracellular signaling, endothelial cell migration, blood vessel development and repair.
Collapse
Affiliation(s)
- Alexander F. Bruns
- Endothelial Cell Biology Unit, School for Molecular and Cellular Biology, University of Leeds, Leeds, United Kingdom
| | - Nadira Yuldasheva
- Division of Cardiovascular and Diabetes Research, Faculty of Medicine and Health, University of Leeds, Leeds, United Kingdom
| | - Antony M. Latham
- Endothelial Cell Biology Unit, School for Molecular and Cellular Biology, University of Leeds, Leeds, United Kingdom
| | - Leyuan Bao
- Endothelial Cell Biology Unit, School for Molecular and Cellular Biology, University of Leeds, Leeds, United Kingdom
| | - Caroline Pellet-Many
- Centre for Cardiovascular Biology and Medicine, University College London, London, United Kingdom
| | - Paul Frankel
- Centre for Cardiovascular Biology and Medicine, University College London, London, United Kingdom
| | - Sam L. Stephen
- Endothelial Cell Biology Unit, School for Molecular and Cellular Biology, University of Leeds, Leeds, United Kingdom
| | - Gareth J. Howell
- Endothelial Cell Biology Unit, School for Molecular and Cellular Biology, University of Leeds, Leeds, United Kingdom
| | - Stephen B. Wheatcroft
- Division of Cardiovascular and Diabetes Research, Faculty of Medicine and Health, University of Leeds, Leeds, United Kingdom
| | - Mark T. Kearney
- Division of Cardiovascular and Diabetes Research, Faculty of Medicine and Health, University of Leeds, Leeds, United Kingdom
| | - Ian C. Zachary
- Centre for Cardiovascular Biology and Medicine, University College London, London, United Kingdom
| | - Sreenivasan Ponnambalam
- Endothelial Cell Biology Unit, School for Molecular and Cellular Biology, University of Leeds, Leeds, United Kingdom
- * E-mail:
| |
Collapse
|
39
|
Mohapatra B, Ahmad G, Nadeau S, Zutshi N, An W, Scheffe S, Dong L, Feng D, Goetz B, Arya P, Bailey TA, Palermo N, Borgstahl GEO, Natarajan A, Raja SM, Naramura M, Band V, Band H. Protein tyrosine kinase regulation by ubiquitination: critical roles of Cbl-family ubiquitin ligases. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2012; 1833:122-39. [PMID: 23085373 DOI: 10.1016/j.bbamcr.2012.10.010] [Citation(s) in RCA: 163] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2012] [Revised: 10/05/2012] [Accepted: 10/08/2012] [Indexed: 12/20/2022]
Abstract
Protein tyrosine kinases (PTKs) coordinate a broad spectrum of cellular responses to extracellular stimuli and cell-cell interactions during development, tissue homeostasis, and responses to environmental challenges. Thus, an understanding of the regulatory mechanisms that ensure physiological PTK function and potential aberrations of these regulatory processes during diseases such as cancer are of broad interest in biology and medicine. Aside from the expected role of phospho-tyrosine phosphatases, recent studies have revealed a critical role of covalent modification of activated PTKs with ubiquitin as a critical mechanism of their negative regulation. Members of the Cbl protein family (Cbl, Cbl-b and Cbl-c in mammals) have emerged as dominant "activated PTK-selective" ubiquitin ligases. Structural, biochemical and cell biological studies have established that Cbl protein-dependent ubiquitination targets activated PTKs for degradation either by facilitating their endocytic sorting into lysosomes or by promoting their proteasomal degradation. This mechanism also targets PTK signaling intermediates that become associated with Cbl proteins in a PTK activation-dependent manner. Cellular and animal studies have established that the relatively broadly expressed mammalian Cbl family members Cbl and Cbl-b play key physiological roles, including their critical functions to prevent the transition of normal immune responses into autoimmune disease and as tumor suppressors; the latter function has received validation from human studies linking mutations in Cbl to human leukemia. These newer insights together with embryonic lethality seen in mice with a combined deletion of Cbl and Cbl-b genes suggest an unappreciated role of the Cbl family proteins, and by implication the ubiquitin-dependent control of activated PTKs, in stem/progenitor cell maintenance. Future studies of existing and emerging animal models and their various cell lineages should help test the broader implications of the evolutionarily-conserved Cbl family protein-mediated, ubiquitin-dependent, negative regulation of activated PTKs in physiology and disease.
Collapse
Affiliation(s)
- Bhopal Mohapatra
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Mohapatra B, Ahmad G, Nadeau S, Zutshi N, An W, Scheffe S, Dong L, Feng D, Goetz B, Arya P, Bailey TA, Palermo N, Borgstahl GEO, Natarajan A, Raja SM, Naramura M, Band V, Band H. Protein tyrosine kinase regulation by ubiquitination: critical roles of Cbl-family ubiquitin ligases. BIOCHIMICA ET BIOPHYSICA ACTA 2012. [PMID: 23085373 DOI: 10.1016/j.bbamcr] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Protein tyrosine kinases (PTKs) coordinate a broad spectrum of cellular responses to extracellular stimuli and cell-cell interactions during development, tissue homeostasis, and responses to environmental challenges. Thus, an understanding of the regulatory mechanisms that ensure physiological PTK function and potential aberrations of these regulatory processes during diseases such as cancer are of broad interest in biology and medicine. Aside from the expected role of phospho-tyrosine phosphatases, recent studies have revealed a critical role of covalent modification of activated PTKs with ubiquitin as a critical mechanism of their negative regulation. Members of the Cbl protein family (Cbl, Cbl-b and Cbl-c in mammals) have emerged as dominant "activated PTK-selective" ubiquitin ligases. Structural, biochemical and cell biological studies have established that Cbl protein-dependent ubiquitination targets activated PTKs for degradation either by facilitating their endocytic sorting into lysosomes or by promoting their proteasomal degradation. This mechanism also targets PTK signaling intermediates that become associated with Cbl proteins in a PTK activation-dependent manner. Cellular and animal studies have established that the relatively broadly expressed mammalian Cbl family members Cbl and Cbl-b play key physiological roles, including their critical functions to prevent the transition of normal immune responses into autoimmune disease and as tumor suppressors; the latter function has received validation from human studies linking mutations in Cbl to human leukemia. These newer insights together with embryonic lethality seen in mice with a combined deletion of Cbl and Cbl-b genes suggest an unappreciated role of the Cbl family proteins, and by implication the ubiquitin-dependent control of activated PTKs, in stem/progenitor cell maintenance. Future studies of existing and emerging animal models and their various cell lineages should help test the broader implications of the evolutionarily-conserved Cbl family protein-mediated, ubiquitin-dependent, negative regulation of activated PTKs in physiology and disease.
Collapse
Affiliation(s)
- Bhopal Mohapatra
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
41
|
Horowitz A, Seerapu HR. Regulation of VEGF signaling by membrane traffic. Cell Signal 2012; 24:1810-20. [PMID: 22617029 DOI: 10.1016/j.cellsig.2012.05.007] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Accepted: 05/09/2012] [Indexed: 01/13/2023]
Abstract
Recent findings have drawn attention to the role of membrane traffic in the signaling of vascular endothelial growth factor (VEGF). The significance of this development stems from the pivotal function of VEGF in vasculogenesis and angiogenesis. The outline of the regulation of VEGF receptor (VEGFR) signaling by membrane traffic is similar to that of the epidermal growth factor receptor (EGFR), a prototype of the intertwining between membrane traffic and signaling. There are, however, unique features in VEGFR signaling that are conferred in part by the involvement of the co-receptor neuropilin (Nrp). Nrp1 and VEGFR2 are integrated into membrane traffic through the adaptor protein synectin, which recruits myosin VI, a molecular motor that drives inward trafficking [17,21,64]. The recent detection of only mild vascular defects in a knockin mouse model that expresses Nrp1 lacking a cytoplasmic domain [104], questions the co-receptor's role in VEGF signaling and membrane traffic. The regulation of endocytosis by ephrin-B2 is another feature unique to VEGR2/3 [18,19], but it awaits a mechanistic explanation. Current models do not fully explain how membrane traffic bridges between VEGFR and the downstream effectors that produce its functional outcome, such as cell migration. VEGF-A appears to accomplish this task in part by recruiting endocytic vesicles carrying RhoA to internalized active VEGFR2 [58].
Collapse
Affiliation(s)
- Arie Horowitz
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic Lerner College of Medicine, 9500 Euclid Avenue, Cleveland, OH 44195, USA.
| | | |
Collapse
|
42
|
Abstract
A strict physiological balance between endogenous proangiogenic and antiangiogenic factors controls endothelial cell functions, such that endothelial cell growth is normally restrained. However, in pathologic angiogenesis, a shift occurs in the balance of regulators, favoring endothelial growth. Much of the control of angiogenic events is instigated through hypoxia-induced VEGF expression. The ubiquitin-proteasome system (UPS) plays a central role in fine-tuning the functions of core proangiogenic proteins, including VEGF, VEGFR-2, angiogenic signaling proteins (e.g., the PLCγ1 and PI3 kinase/AKT pathways), and other non-VEGF angiogenic pathways. The emerging mechanisms by which ubiquitin modification of angiogenic proteins control angiogenesis involve both proteolytic and nonproteolytic functions. Here, I review recent advances that link the UPS to regulation of angiogenesis and highlight the potential therapeutic value of the UPS in angiogenesis-associated diseases.
Collapse
Affiliation(s)
- Nader Rahimi
- Department of Pathology, Boston University Medical Campus, 670 Albany St., Room 510, Boston, MA 02118, USA.
| |
Collapse
|
43
|
Baldys A, Raymond JR. Role of c-Cbl carboxyl terminus in serotonin 5-HT2A receptor recycling and resensitization. J Biol Chem 2011; 286:24656-65. [PMID: 21464131 DOI: 10.1074/jbc.m110.119891] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
The 5-hydroxytryptamine 2A receptor (5-HT(2A)R) undergoes constitutive and agonist-dependent internalization. Despite many advances in our understanding of G protein-coupled receptor trafficking, the exact mechanism of endocytic sorting of G protein-coupled receptors remains obscure. Recently, we have reported a novel finding documenting a global role for the ubiquitin ligase c-Cbl in regulating vesicular sorting of epidermal growth factor receptor (Baldys, A., Göoz, M., Morinelli, T. A., Lee, M. H., Raymond, J. R., Jr., Luttrell, L. M., and Raymond, J. R., Sr. (2009) Biochemistry 48, 1462-1473). Thus, we tested the hypothesis that c-Cbl might play a role in 5-HT(2A)R recycling. In this study, we demonstrated an association of 5-HT(2A)R with c-Cbl. Furthermore, down-regulation of c-Cbl by RNA interference blocked efficient recycling of 5-HT(2A)R to the plasma membrane. Immunofluorescence microscopy revealed that 5-HT(2A) receptors were trapped in early endosome antigen 1- and Rab11-positive sorting endosomes in cells overexpressing c-Cbl mutants lacking carboxyl termini. This inhibitory effect was associated with a relative decrease in association of c-Cbl truncation proteins with the 5-HT(2A)R, compared with that observed for the full-length c-Cbl fusion protein. Consistent with the delayed recycling, 5-HT(2A)R resensitization was greatly attenuated in the presence of c-Cbl mutants lacking carboxyl termini, as detected by changes in the cytosolic calcium. Taken together, these studies have led to the discovery that the C-terminal region of c-Cbl plays a crucial role in the temporal and spatial control of 5-HT(2A)R recycling.
Collapse
Affiliation(s)
- Aleksander Baldys
- Nephrology Division, Department of Medicine, Medical University of South Carolina, Ralph H. Johnson Veterans Affairs Medical Center, Charleston, South Carolina 29425, USA
| | | |
Collapse
|
44
|
PEST motif serine and tyrosine phosphorylation controls vascular endothelial growth factor receptor 2 stability and downregulation. Mol Cell Biol 2011; 31:2010-25. [PMID: 21402774 DOI: 10.1128/mcb.01006-10] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
The internalization and degradation of vascular endothelial growth factor receptor 2 (VEGFR-2), a potent angiogenic receptor tyrosine kinase, is a central mechanism for the regulation of the coordinated action of VEGF in angiogenesis. Here, we show that VEGFR-2 is ubiquitinated in response to VEGF, and Lys 48-linked polyubiquitination controls its degradation via the 26S proteosome. The degradation and ubiquitination of VEGFR-2 is controlled by its PEST domain, and the phosphorylation of Ser1188/Ser1191 is required for the ubiquitination of VEGFR-2. F-box-containing β-Trcp1 ubiquitin E3 ligase is recruited to S1188/S1191 VEGFR-2 and mediates the ubiquitination and degradation of VEGFR-2. The PEST domain also controls the activation of p38 mitogen-activated protein kinase (MAPK) through phospho-Y1173. The activation of p38 stabilizes VEGFR-2, and its inactivation accelerates VEGFR-2 downregulation. The VEGFR-2-mediated activation of p38 is established through the protein kinase A (PKA)/MKK6 pathway. PKA is recruited to VEGFR-2 through AKAP1/AKAP149, and its phosphorylation requires Y1173 of VEGFR-2. The study has identified a unique mechanism in which VEGFR-2 stability and degradation is modulated. The PEST domain acts as a dual modulator of VEGFR-2; the phosphorylation of S1188/S1191 controls ubiquitination and degradation via β-Trcp1, where the phosphorylation of Y1173 through PKA/p38 MAPK controls the stability of VEGFR-2.
Collapse
|
45
|
Meyer RD, Husain D, Rahimi N. c-Cbl inhibits angiogenesis and tumor growth by suppressing activation of PLCγ1. Oncogene 2011; 30:2198-206. [PMID: 21242968 PMCID: PMC3969724 DOI: 10.1038/onc.2010.597] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Angiogenesis is regulated by highly coordinated function of various proteins with pro- and anti-angiogenic functions. Among the many cytoplasmic signaling proteins that are activated by VEGFR-2, activation of PLCγ1 is considered to have a pivotal role in angiogenic signaling. In previous study we have identified c-Cbl as a negative regulator of PLCγ1 in endothelial cells, the biochemical and biological significance of c-Cbl, however, in angiogenesis in vivo and molecular mechanisms involved were remained elusive. In this study, we report that genetic inactivation of c-Cbl in mice results in enhanced tumor angiogenesis and retinal neovascularization. Endothelial cells derived from c-Cbl null mice displayed elevated cell proliferation and tube formation in response to VEGF stimulation. Loss of c-Cbl also resulted in robust activation of PLCγ1 and increased intracellular calcium release. c-Cbl-dependent ubiquitination selectively inhibited tyrosine phosphorylation of PLCγ1 and mostly refrained from ubiquitin-mediated degradation. Hence, we propose c-Cbl as an angiogenic suppressor protein where upon activation it uniquely modulates PLCγ1 activation by ubiquitination and subsequently inhibits VEGF-driven angiogenesis.
Collapse
Affiliation(s)
- R D Meyer
- Department of Pathology, Boston University Medical Campus, Boston, MA 02118, USA
| | | | | |
Collapse
|
46
|
Duan L, Raja SM, Chen G, Virmani S, Williams SH, Clubb RJ, Mukhopadhyay C, Rainey MA, Ying G, Dimri M, Chen J, Reddi AL, Naramura M, Band V, Band H. Negative regulation of EGFR-Vav2 signaling axis by Cbl ubiquitin ligase controls EGF receptor-mediated epithelial cell adherens junction dynamics and cell migration. J Biol Chem 2011; 286:620-33. [PMID: 20940296 PMCID: PMC3013022 DOI: 10.1074/jbc.m110.188086] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2010] [Indexed: 02/04/2023] Open
Abstract
The E3 ubiquitin ligase Casitas B lymphoma protein (Cbl) controls the ubiquitin-dependent degradation of EGF receptor (EGFR), but its role in regulating downstream signaling elements with which it associates and its impact on biological outcomes of EGFR signaling are less clear. Here, we demonstrate that stimulation of EGFR on human mammary epithelial cells disrupts adherens junctions (AJs) through Vav2 and Rac1/Cdc42 activation. In EGF-stimulated cells, Cbl regulates the levels of phosphorylated Vav2 thereby attenuating Rac1/Cdc42 activity. Knockdown of Cbl and Cbl-b enhanced the EGF-induced disruption of AJs and cell motility. Overexpression of constitutively active Vav2 activated Rac1/Cdc42 and reorganized junctional actin cytoskeleton; these effects were suppressed by WT Cbl and enhanced by a ubiquitin ligase-deficient Cbl mutant. Cbl forms a complex with phospho-EGFR and phospho-Vav2 and facilitates phospho-Vav2 ubiquitinylation. Cbl can also interact with Vav2 directly in a Cbl Tyr-700-dependent manner. A ubiquitin ligase-deficient Cbl mutant enhanced the morphological transformation of mammary epithelial cells induced by constitutively active Vav2; this effect requires an intact Cbl Tyr-700. These results indicate that Cbl ubiquitin ligase plays a critical role in the maintenance of AJs and suppression of cell migration through down-regulation of EGFR-Vav2 signaling.
Collapse
Affiliation(s)
- Lei Duan
- From the Eppley Institute for Cancer and Allied Diseases, and
- the Department of Medicine, NorthShore University Health Systems, Northwestern University, Evanston, Illinois 60201
| | - Srikumar M. Raja
- From the Eppley Institute for Cancer and Allied Diseases, and
- the Department of Medicine, NorthShore University Health Systems, Northwestern University, Evanston, Illinois 60201
| | - Gengsheng Chen
- the Department of Medicine, NorthShore University Health Systems, Northwestern University, Evanston, Illinois 60201
| | - Sumeet Virmani
- the Department of Medicine, NorthShore University Health Systems, Northwestern University, Evanston, Illinois 60201
| | | | - Robert J. Clubb
- From the Eppley Institute for Cancer and Allied Diseases, and
| | | | - Mark A. Rainey
- From the Eppley Institute for Cancer and Allied Diseases, and
- the Department of Medicine, NorthShore University Health Systems, Northwestern University, Evanston, Illinois 60201
| | - Guoguang Ying
- the Department of Medicine, NorthShore University Health Systems, Northwestern University, Evanston, Illinois 60201
| | - Manjari Dimri
- the Department of Medicine, NorthShore University Health Systems, Northwestern University, Evanston, Illinois 60201
| | - Jing Chen
- the Department of Medicine, NorthShore University Health Systems, Northwestern University, Evanston, Illinois 60201
| | - Alagarsamy L. Reddi
- the Department of Medicine, NorthShore University Health Systems, Northwestern University, Evanston, Illinois 60201
| | - Mayumi Naramura
- From the Eppley Institute for Cancer and Allied Diseases, and
- the Department of Medicine, NorthShore University Health Systems, Northwestern University, Evanston, Illinois 60201
| | - Vimla Band
- From the Eppley Institute for Cancer and Allied Diseases, and
- Genetics, Cell Biology and Anatomy, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska 68198-5950 and
- the Department of Medicine, NorthShore University Health Systems, Northwestern University, Evanston, Illinois 60201
| | - Hamid Band
- From the Eppley Institute for Cancer and Allied Diseases, and
- Departments of Biochemistry and Molecular Biology, Pathology and Microbiology, Pharmacology and Neuroscience, and
- the Department of Medicine, NorthShore University Health Systems, Northwestern University, Evanston, Illinois 60201
| |
Collapse
|
47
|
Husain D, Meyer RD, Mehta M, Pfeifer WM, Chou E, Navruzbekov G, Ahmed E, Rahimi N. Role of c-Cbl-dependent regulation of phospholipase Cgamma1 activation in experimental choroidal neovascularization. Invest Ophthalmol Vis Sci 2010; 51:6803-9. [PMID: 20592236 DOI: 10.1167/iovs.10-5255] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
PURPOSE Activation of phospholipase Cγ1 (PLCγ1) by vascular endothelial growth factor receptor (VEGFR)-2 is necessary for proliferation and tube formation of endothelial cells in vitro. Previous work has demonstrated that Casitas B-lineage lymphoma (c-Cbl) promotes ubiquitination of PLCγ1 and suppression of its tyrosine phosphorylation. This study was designed to evaluate the importance of PLCγ1 and c-Cbl in experimental choroidal neovascularization (CNV). METHODS The role of PLCγ1 was studied in three models of angiogenesis: the endothelial cell culture system, the chorioallantoic membrane (CAM) assay, and the laser-induced CNV model. Endothelial cells were analyzed for the role of PLCγ1 in promoting tube formation. CAMs were incubated with pharmacologic agents that either inhibit or stimulate PLCγ1. CNV was induced in wild-type and c-Cbl-knockout mice, and the progression of CNV was evaluated by fluorescein angiography. RESULTS Activation of PLCγ1 was necessary for tube formation of endothelial cells. PLCγ1 stimulation increased the growth of blood vessels and conversely, PLCγ1 inhibition decreased the growth of blood vessels in the CAM model. CNV lesions in the c-Cbl-knockout mice were significantly greater in number, more confluent, and increased in size with time, compared with those in the control wild-type mice. CONCLUSIONS The data show that PLCγ1 plays an important role in angiogenesis. Loss of c-Cbl results in enhanced CNV in the eye. The study also shows that c-Cbl plays an important role in ocular angiogenesis, suggesting that modulation of c-Cbl activity or inhibition of PLCγ1 would be a compelling target for antiangiogenesis therapy.
Collapse
Affiliation(s)
- Deeba Husain
- Department of Ophthalmology, Boston University School of Medicine, Boston, MA 02114, USA.
| | | | | | | | | | | | | | | |
Collapse
|
48
|
Bruns AF, Herbert SP, Odell AF, Jopling HM, Hooper NM, Zachary IC, Walker JH, Ponnambalam S. Ligand-stimulated VEGFR2 signaling is regulated by co-ordinated trafficking and proteolysis. Traffic 2010; 11:161-74. [PMID: 19883397 DOI: 10.1111/j.1600-0854.2009.01001.x] [Citation(s) in RCA: 113] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Vascular endothelial growth factor A (VEGF-A)-induced signaling through VEGF receptor 2 (VEGFR2) regulates both physiological and pathological angiogenesis in mammals. However, the temporal and spatial mechanism underlying VEGFR2-mediated intracellular signaling is not clear. Here, we define a pathway for VEGFR2 trafficking and proteolysis that regulates VEGF-A-stimulated signaling and endothelial cell migration. Ligand-stimulated VEGFR2 activation and ubiquitination preceded proteolysis and cytoplasmic domain removal associated with endosomes. A soluble VEGFR2 cytoplasmic domain fragment displayed tyrosine phosphorylation and activation of downstream intracellular signaling. Perturbation of endocytosis by the depletion of either clathrin heavy chain or an ESCRT-0 subunit caused differential effects on ligand-stimulated VEGFR2 proteolysis and signaling. This novel VEGFR2 proteolysis was blocked by the inhibitors of 26S proteasome activity. Inhibition of proteasome activity prolonged VEGF-A-induced intracellular signaling to c-Akt and endothelial nitric oxide synthase (eNOS). VEGF-A-stimulated endothelial cell migration was dependent on VEGFR2 and VEGFR tyrosine kinase activity. Inhibition of proteasome activity in this assay stimulated VEGF-A-mediated endothelial cell migration. VEGFR2 endocytosis, ubiquitination and proteolysis could also be stimulated by a protein kinase C-dependent pathway. Thus, removal of the VEGFR2 carboxyl terminus linked to phosphorylation, ubiquitination and trafficking is necessary for VEGF-stimulated endothelial signaling and cell migration.
Collapse
Affiliation(s)
- Alexander F Bruns
- Endothelial Cell Biology Unit, Institute of Molecular and Cellular Biology, LIGHT Laboratories, University of Leeds, Leeds LS2 9JT, UK
| | | | | | | | | | | | | | | |
Collapse
|
49
|
Abstract
The intracellular trafficking of receptors provides a way to control the overall sensitivity of a cell to receptor stimulation. These sorting pathways are also used to shape the balance of signals that are generated in response to receptor activation. The major pro-angiogenic growth factor receptor is VEGFR2 (vascular endothelial growth factor 2). VEGFR2 activates a very similar set of signalling pathways to other RTKs (receptor tyrosine kinases); however, its intracellular trafficking is very different. Furthermore, VEGFR2 can form a complex with a range of different angiogenic regulators that in turn regulate the trafficking of VEGFR2 through the endosomal pathway. This regulated trafficking of VEGFR2 has important consequences for angiogenic signalling and is a clear demonstration of how the endosomal pathway plays a critical role in connecting receptor signalling pathways to cellular events.
Collapse
|
50
|
|