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Al-Huthaifi AM, Radman BA, Al-Alawi AA, Mahmood F, Liu TB. Mechanisms and Virulence Factors of Cryptococcus neoformans Dissemination to the Central Nervous System. J Fungi (Basel) 2024; 10:586. [PMID: 39194911 DOI: 10.3390/jof10080586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2024] [Revised: 07/31/2024] [Accepted: 08/15/2024] [Indexed: 08/29/2024] Open
Abstract
Cryptococcosis is a prevalent fungal infection of the central nervous system (CNS) caused by Cryptococcus neoformans, a yeast with a polysaccharide capsule in the basidiomycete group. Normally, C. neoformans infects the respiratory tract and then breaches the blood-brain barrier (BBB), leading to meningitis or meningoencephalitis, which leads to hundreds of thousands of deaths each year. Although the mechanism by which C. neoformans infiltrates the BBB to invade the brain has yet to be fully understood, research has revealed that C. neoformans can cross the BBB using transcellular penetration, paracellular traversal, and infected phagocytes (the "Trojan horse" mechanism). The secretion of multiple virulence factors by C. neoformans is crucial in facilitating the spread of infection after breaching the BBB and causing brain infections. Extensive research has shown that various virulence factors play a significant role in the dissemination of infection beyond the lungs. This review explores the mechanisms of C. neoformans entering the CNS and explains how it bypasses the BBB. Additionally, it aims to understand the interplay between the regulatory mechanisms and virulence factors of C. neoformans.
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Affiliation(s)
| | - Bakeel A Radman
- Cancer Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510315, China
| | | | - Fawad Mahmood
- Medical Research Institute, Southwest University, Chongqing 400715, China
| | - Tong-Bao Liu
- Medical Research Institute, Southwest University, Chongqing 400715, China
- Jinfeng Laboratory, Chongqing 401329, China
- Engineering Research Center for Cancer Biomedical and Translational Medicine, Southwest University, Chongqing 400715, China
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2
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Lee JE, Lee H, Baek E, Choi B, Yun HS, Yoo YK, Lee YS, Song GJ, Cho KS. The role of glial and neuronal Eph/ephrin signaling in Drosophila mushroom body development and sleep and circadian behavior. Biochem Biophys Res Commun 2024; 720:150072. [PMID: 38749187 DOI: 10.1016/j.bbrc.2024.150072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Accepted: 05/07/2024] [Indexed: 06/05/2024]
Abstract
The Eph receptor, a prototypically large receptor protein tyrosine kinase, interacts with ephrin ligands, forming a bidirectional signaling system that impacts diverse brain functions. Eph receptors and ephrins mediate forward and reverse signaling, affecting neurogenesis, axon guidance, and synaptic signaling. While mammalian studies have emphasized their roles in neurogenesis and synaptic plasticity, the Drosophila counterparts are less studied, especially in glial cells, despite structural similarities. Using RNAi to modulate Eph/ephrin expression in Drosophila neurons and glia, we studied their roles in brain development and sleep and circadian behavior. Knockdown of neuronal ephrin disrupted mushroom body development, while glial knockdown had minimal impact. Surprisingly, disrupting ephrin in neurons or glial cells altered sleep and circadian rhythms, indicating a direct involvement in these behaviors independent from developmental effects. Further analysis revealed distinct sleep phenotypes between neuronal and glial knockdowns, underscoring the intricate interplay within the neural circuits that govern behavior. Glia-specific knockdowns showed altered sleep patterns and reduced circadian rhythmicity, suggesting an intricate role of glia in sleep regulation. Our findings challenge simplistic models of Eph/ephrin signaling limited to neuron-glia communication and emphasize the complexity of the regulatory networks modulating behavior. Future investigations targeting specific glial subtypes will enhance our understanding of Eph/ephrin signaling's role in sleep regulation across species.
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Affiliation(s)
- Ji-Eun Lee
- Department of Biological Sciences, Konkuk University, Seoul, 05029, Republic of Korea
| | - Hyungi Lee
- Department of Biological Sciences, Konkuk University, Seoul, 05029, Republic of Korea
| | - Eunji Baek
- Department of Biological Sciences, Konkuk University, Seoul, 05029, Republic of Korea
| | - Byoungyun Choi
- Department of Biological Sciences, Konkuk University, Seoul, 05029, Republic of Korea
| | - Hye Sup Yun
- Department of Biological Sciences, Konkuk University, Seoul, 05029, Republic of Korea
| | - Yong Kyoung Yoo
- Department of Electronic Engineering, Catholic Kwandong University, Gangneung, Gangwon-do, 25601, Republic of Korea
| | - Young-Sun Lee
- Department of Medical Science, College of Medicine, Catholic Kwandong University, Gangneung, Gangwon-do, 25601, Republic of Korea; Translational Brain Research Center, International St. Mary's Hospital, Catholic Kwandong University, Incheon, 22711, Republic of Korea
| | - Gyun Jee Song
- Department of Medical Science, College of Medicine, Catholic Kwandong University, Gangneung, Gangwon-do, 25601, Republic of Korea; Translational Brain Research Center, International St. Mary's Hospital, Catholic Kwandong University, Incheon, 22711, Republic of Korea
| | - Kyoung Sang Cho
- Department of Biological Sciences, Konkuk University, Seoul, 05029, Republic of Korea; Korea Hemp Institute, Konkuk University, Seoul, 05029, Republic of Korea.
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3
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da Silva Feltran G, Augusto da Silva R, da Costa Fernandes CJ, Ferreira MR, Dos Santos SAA, Justulin Junior LA, Del Valle Sosa L, Zambuzzi WF. Vascular smooth muscle cells exhibit elevated hypoxia-inducible Factor-1α expression in human blood vessel organoids, influencing osteogenic performance. Exp Cell Res 2024; 440:114136. [PMID: 38909881 DOI: 10.1016/j.yexcr.2024.114136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 03/14/2024] [Accepted: 06/15/2024] [Indexed: 06/25/2024]
Abstract
Considering the importance of alternative methodologies to animal experimentation, we propose an organoid-based biological model for in vitro blood vessel generation, achieved through co-culturing endothelial and vascular smooth muscle cells (VSMCs). Initially, the organoids underwent comprehensive characterization, revealing VSMCs (α-SMA + cells) at the periphery and endothelial cells (CD31+ cells) at the core. Additionally, ephrin B2 and ephrin B4, genes implicated in arterial and venous formation respectively, were used to validate the obtained organoid. Moreover, the data indicates exclusive HIF-1α expression in VSMCs, identified through various methodologies. Subsequently, we tested the hypothesis that the generated blood vessels have the capacity to modulate the osteogenic phenotype, demonstrating the ability of HIF-1α to promote osteogenic signals, primarily by influencing Runx2 expression. Overall, this study underscores that the methodology employed to create blood vessel organoids establishes an experimental framework capable of producing a 3D culture model of both venous and arterial endothelial tissues. This model effectively guides morphogenesis from mesenchymal stem cells through paracrine signaling, ultimately leading to an osteogenic acquisition phenotype, with the dynamic involvement of HIF-1α.
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Affiliation(s)
- Geórgia da Silva Feltran
- Department of Chemical and Biological Sciences, Institute of Biosciences, Universidade Estadual Paulista - UNESP, Campus Botucatu, Botucatu, São Paulo, 18618-970, Brazil
| | - Rodrigo Augusto da Silva
- CEEpiRG, Program in Environmental and Experimental Pathology, Paulista University - UNIP, São Paulo, São Paulo, Brazil
| | - Célio Junior da Costa Fernandes
- Department of Chemical and Biological Sciences, Institute of Biosciences, Universidade Estadual Paulista - UNESP, Campus Botucatu, Botucatu, São Paulo, 18618-970, Brazil
| | - Marcel Rodrigues Ferreira
- Department of Chemical and Biological Sciences, Institute of Biosciences, Universidade Estadual Paulista - UNESP, Campus Botucatu, Botucatu, São Paulo, 18618-970, Brazil
| | | | - Luis Antônio Justulin Junior
- Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University - UNESP, Botucatu, São Paulo, Brazil
| | - Liliana Del Valle Sosa
- Electron Microscopy Center, Faculty of Medical Sciences, National University of Cordoba, Córdoba, Argentina
| | - Willian Fernando Zambuzzi
- Department of Chemical and Biological Sciences, Institute of Biosciences, Universidade Estadual Paulista - UNESP, Campus Botucatu, Botucatu, São Paulo, 18618-970, Brazil.
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Gurung RL, Zheng H, Koh HWL, Yiamunaa M, Liu JJ, Liu S, Chan C, Ang K, Tan CSH, Sobota RM, Subramaniam T, Sum CF, Lim SC. Plasma proteomics of diabetic kidney disease among Asians with younger-onset type 2 diabetes. J Clin Endocrinol Metab 2024:dgae266. [PMID: 38626182 DOI: 10.1210/clinem/dgae266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 02/29/2024] [Accepted: 04/15/2024] [Indexed: 04/18/2024]
Abstract
CONTEXT Patients with younger onset of type 2 diabetes (YT2D) have increased risk for kidney failure compared to those with late onset. However, the mechanism of diabetic kidney disease (DKD) progression in this high-risk group is poorly understood. OBJECTIVES To identify novel biomarkers and potential causal proteins associated with DKD progression in patients with YT2D. DESIGN AND PARTICIPANTS Among YT2D (T2D onset age ≤ 40 years), 144 DKD progressors (cases) were matched for T2D onset age, sex, and ethnicity with 292 non-progressors (controls) and divided into discovery and validation sets. DKD progression was defined as decline of estimated glomerular filtration rate (eGFR) of 3ml/min/1.73m2 or greater or 40% decline in eGFR from baseline. 1472 plasma proteins were measured through a multiplex immunoassay that uses a proximity extension assay technology. Multivariable logistic regression was used to identify proteins associated with DKD progression. Mendelian randomization (MR) was used to evaluate causal relationship between plasma proteins and DKD progression. RESULTS 42 plasma proteins were associated with DKD progression, independent of traditional cardio-renal risk factors, baseline eGFR and urine albumin-to-creatinine ratio (uACR). The proteins identified were related to inflammatory and remodelling biological processes. Our findings suggested angiogenin as one of the top signals (odds ratio =5.29, 95% CI 2.39-11.73, P = 4.03 × 10-5). Furthermore, genetically determined plasma angiogenin level was associated with increased odds of DKD progression. CONCLUSION Large-scale proteomic analysis identified novel proteomic biomarkers for DKD progression in YT2D. Genetic evidence suggest a causal role of plasma angiogenin in DKD progression.
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Affiliation(s)
- Resham Lal Gurung
- Clinical Research Unit, Khoo Teck Puat Hospital, Singapore
- Cardiovascular and Metabolic Disorders Signature Research Program, Duke-NUS Medical School, Singapore
| | - Huili Zheng
- Clinical Research Unit, Khoo Teck Puat Hospital, Singapore
| | - Hiromi Wai Ling Koh
- Institute of Molecular and Cell Biology, Singapore
- Diabetes Centre, Admiralty Medical Centre, Singapore
| | - M Yiamunaa
- Clinical Research Unit, Khoo Teck Puat Hospital, Singapore
| | - Jian-Jun Liu
- Clinical Research Unit, Khoo Teck Puat Hospital, Singapore
| | - Sylvia Liu
- Clinical Research Unit, Khoo Teck Puat Hospital, Singapore
| | - Clara Chan
- Clinical Research Unit, Khoo Teck Puat Hospital, Singapore
| | - Keven Ang
- Clinical Research Unit, Khoo Teck Puat Hospital, Singapore
| | | | - Radoslaw Mikolaj Sobota
- Institute of Molecular and Cell Biology, Singapore
- Diabetes Centre, Admiralty Medical Centre, Singapore
| | | | - Chee Fang Sum
- Clinical Research Unit, Khoo Teck Puat Hospital, Singapore
| | - Su Chi Lim
- Clinical Research Unit, Khoo Teck Puat Hospital, Singapore
- Institute of Molecular and Cell Biology, Singapore
- Saw Swee Hock School of Public Heath, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore
- Diabetes Centre, Admiralty Medical Centre, Singapore
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Liang LY, Geoghegan ND, Mlodzianoski M, Leis A, Whitehead LW, Surudoi MG, Young SN, Janes P, Shepherd D, Ghosal D, Rogers KL, Murphy JM, Lucet IS. Co-clustering of EphB6 and ephrinB1 in trans restrains cancer cell invasion. Commun Biol 2024; 7:461. [PMID: 38627519 PMCID: PMC11021433 DOI: 10.1038/s42003-024-06118-4] [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: 02/20/2024] [Accepted: 03/27/2024] [Indexed: 04/19/2024] Open
Abstract
EphB6 is an understudied ephrin receptor tyrosine pseudokinase that is downregulated in multiple types of metastatic cancers. Unlike its kinase-active counterparts which autophosphorylate and transmit signals upon intercellular interaction, little is known about how EphB6 functions in the absence of intrinsic kinase activity. Here, we unveil a molecular mechanism of cell-cell interaction driven by EphB6. We identify ephrinB1 as a cognate ligand of EphB6 and show that in trans interaction of EphB6 with ephrinB1 on neighboring cells leads to the formation of large co-clusters at the plasma membrane. These co-clusters exhibit a decreased propensity towards endocytosis, suggesting a unique characteristic for this type of cell-cell interaction. Using lattice light-sheet microscopy, 3D structured illumination microscopy and cryo-electron tomography techniques, we show that co-clustering of EphB6 and ephrinB1 promotes the formation of double-membrane tubular structures between cells. Importantly, we also demonstrate that these intercellular structures stabilize cell-cell adhesion, leading to a reduction in the invasive behavior of cancer cells. Our findings rationalize a role for EphB6 pseudokinase as a tumor suppressor when interacting with its ligands in trans.
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Affiliation(s)
- Lung-Yu Liang
- Walter and Eliza Hall Institute for Medical Research, 1G Royal Parade, Parkville, VIC, 3052, Australia
- Department of Medical Biology, University of Melbourne, 1G Royal Parade, Parkville, VIC, 3052, Australia
| | - Niall D Geoghegan
- Walter and Eliza Hall Institute for Medical Research, 1G Royal Parade, Parkville, VIC, 3052, Australia
- Department of Medical Biology, University of Melbourne, 1G Royal Parade, Parkville, VIC, 3052, Australia
| | - Michael Mlodzianoski
- Walter and Eliza Hall Institute for Medical Research, 1G Royal Parade, Parkville, VIC, 3052, Australia
- Department of Medical Biology, University of Melbourne, 1G Royal Parade, Parkville, VIC, 3052, Australia
| | - Andrew Leis
- Walter and Eliza Hall Institute for Medical Research, 1G Royal Parade, Parkville, VIC, 3052, Australia
- Department of Medical Biology, University of Melbourne, 1G Royal Parade, Parkville, VIC, 3052, Australia
| | - Lachlan W Whitehead
- Walter and Eliza Hall Institute for Medical Research, 1G Royal Parade, Parkville, VIC, 3052, Australia
- Department of Medical Biology, University of Melbourne, 1G Royal Parade, Parkville, VIC, 3052, Australia
| | - Minglyanna G Surudoi
- Walter and Eliza Hall Institute for Medical Research, 1G Royal Parade, Parkville, VIC, 3052, Australia
- Department of Medical Biology, University of Melbourne, 1G Royal Parade, Parkville, VIC, 3052, Australia
| | - Samuel N Young
- Walter and Eliza Hall Institute for Medical Research, 1G Royal Parade, Parkville, VIC, 3052, Australia
- Department of Medical Biology, University of Melbourne, 1G Royal Parade, Parkville, VIC, 3052, Australia
| | - Peter Janes
- Olivia Newton-John Cancer Research Institute and La Trobe School of Cancer Medicine, Level 5, ONJ Centre, 145 Studley Rd, Heidelberg, VIC, 3084, Australia
| | - Doulin Shepherd
- Department of Biochemistry and Pharmacology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, VIC, 3052, Australia
| | - Debnath Ghosal
- Department of Biochemistry and Pharmacology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, VIC, 3052, Australia
- ARC Centre for Cryo-electron Microscopy of Membrane Proteins, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, VIC, 3052, Australia
| | - Kelly L Rogers
- Walter and Eliza Hall Institute for Medical Research, 1G Royal Parade, Parkville, VIC, 3052, Australia
- Department of Medical Biology, University of Melbourne, 1G Royal Parade, Parkville, VIC, 3052, Australia
| | - James M Murphy
- Walter and Eliza Hall Institute for Medical Research, 1G Royal Parade, Parkville, VIC, 3052, Australia.
- Department of Medical Biology, University of Melbourne, 1G Royal Parade, Parkville, VIC, 3052, Australia.
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, 3052, Australia.
| | - Isabelle S Lucet
- Walter and Eliza Hall Institute for Medical Research, 1G Royal Parade, Parkville, VIC, 3052, Australia.
- Department of Medical Biology, University of Melbourne, 1G Royal Parade, Parkville, VIC, 3052, Australia.
- ARC Centre for Cryo-electron Microscopy of Membrane Proteins, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, VIC, 3052, Australia.
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6
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Stewen J, Kruse K, Godoi-Filip AT, Zenia, Jeong HW, Adams S, Berkenfeld F, Stehling M, Red-Horse K, Adams RH, Pitulescu ME. Eph-ephrin signaling couples endothelial cell sorting and arterial specification. Nat Commun 2024; 15:2539. [PMID: 38570531 PMCID: PMC10991410 DOI: 10.1038/s41467-024-46300-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 02/21/2024] [Indexed: 04/05/2024] Open
Abstract
Cell segregation allows the compartmentalization of cells with similar fates during morphogenesis, which can be enhanced by cell fate plasticity in response to local molecular and biomechanical cues. Endothelial tip cells in the growing retina, which lead vessel sprouts, give rise to arterial endothelial cells and thereby mediate arterial growth. Here, we have combined cell type-specific and inducible mouse genetics, flow experiments in vitro, single-cell RNA sequencing and biochemistry to show that the balance between ephrin-B2 and its receptor EphB4 is critical for arterial specification, cell sorting and arteriovenous patterning. At the molecular level, elevated ephrin-B2 function after loss of EphB4 enhances signaling responses by the Notch pathway, VEGF and the transcription factor Dach1, which is influenced by endothelial shear stress. Our findings reveal how Eph-ephrin interactions integrate cell segregation and arteriovenous specification in the vasculature, which has potential relevance for human vascular malformations caused by EPHB4 mutations.
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Affiliation(s)
- Jonas Stewen
- Department of Tissue Morphogenesis, Max Planck Institute for Molecular Biomedicine, D-48149, Münster, Germany
| | - Kai Kruse
- Department of Tissue Morphogenesis, Max Planck Institute for Molecular Biomedicine, D-48149, Münster, Germany
- Bioinformatics Service Unit, Max Planck Institute for Molecular Biomedicine, D-48149, Münster, Germany
| | - Anca T Godoi-Filip
- Department of Tissue Morphogenesis, Max Planck Institute for Molecular Biomedicine, D-48149, Münster, Germany
| | - Zenia
- Department of Tissue Morphogenesis, Max Planck Institute for Molecular Biomedicine, D-48149, Münster, Germany
| | - Hyun-Woo Jeong
- Department of Tissue Morphogenesis, Max Planck Institute for Molecular Biomedicine, D-48149, Münster, Germany
- Sequencing Core Facility, Max Planck Institute for Molecular Biomedicine, D-48149, Münster, Germany
| | - Susanne Adams
- Department of Tissue Morphogenesis, Max Planck Institute for Molecular Biomedicine, D-48149, Münster, Germany
| | - Frank Berkenfeld
- Department of Tissue Morphogenesis, Max Planck Institute for Molecular Biomedicine, D-48149, Münster, Germany
| | - Martin Stehling
- Flow Cytometry Unit, Max Planck Institute for Molecular Biomedicine, D-48149, Münster, Germany
| | - Kristy Red-Horse
- Department of Biology, Stanford University, Stanford, CA, USA
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, USA
- Howard Hughes Medical Institute, Stanford, CA, USA
| | - Ralf H Adams
- Department of Tissue Morphogenesis, Max Planck Institute for Molecular Biomedicine, D-48149, Münster, Germany.
| | - Mara E Pitulescu
- Department of Tissue Morphogenesis, Max Planck Institute for Molecular Biomedicine, D-48149, Münster, Germany.
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Asadi F, Gunawardana SC, Dolle RE, Piston DW. An orally available compound suppresses glucagon hypersecretion and normalizes hyperglycemia in type 1 diabetes. JCI Insight 2024; 9:e172626. [PMID: 38258903 PMCID: PMC10906223 DOI: 10.1172/jci.insight.172626] [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: 05/31/2023] [Accepted: 12/05/2023] [Indexed: 01/24/2024] Open
Abstract
Suppression of glucagon hypersecretion can normalize hyperglycemia during type 1 diabetes (T1D). Activating erythropoietin-producing human hepatocellular receptor type-A4 (EphA4) on α cells reduced glucagon hypersecretion from dispersed α cells and T1D islets from both human donor and mouse models. We synthesized a high-affinity small molecule agonist for the EphA4 receptor, WCDD301, which showed robust plasma and liver microsome metabolic stability in both mouse and human preparations. In islets and dispersed islet cells from nondiabetic and T1D human donors, WCDD301 reduced glucagon secretion comparable to the natural EphA4 ligand, Ephrin-A5. In diabetic NOD and streptozotocin-treated mice, once-daily oral administration of WCDD301 formulated with a time-release excipient reduced plasma glucagon and normalized blood glucose for more than 3 months. These results suggest that targeting the α cell EphA4 receptor by sustained release of WCDD301 is a promising pharmacologic pathway for normalizing hyperglycemia in patients with T1D.
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Affiliation(s)
| | | | - Roland E. Dolle
- Center for Drug Discovery, Washington University School of Medicine, St. Louis, Missouri, USA
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8
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Lanser DM, Bennett AB, Vu K, Gelli A. Macropinocytosis as a potential mechanism driving neurotropism of Cryptococcus neoformans. Front Cell Infect Microbiol 2023; 13:1331429. [PMID: 38149006 PMCID: PMC10750359 DOI: 10.3389/fcimb.2023.1331429] [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: 11/01/2023] [Accepted: 11/27/2023] [Indexed: 12/28/2023] Open
Abstract
Cryptococcus neoformans can invade the central nervous system by crossing the blood-brain barrier via a transcellular mechanism that relies on multiple host factors. In this narrative, we review the evidence that a direct interplay between C. neoformans and brain endothelial cells forms the basis for invasion and transmigration across the brain endothelium. Adherence and internalization of C. neoformans is dependent on transmembrane proteins, including a hyaluronic acid receptor and an ephrin receptor tyrosine kinase. We consider the role of EphA2 in facilitating the invasion of the central nervous system by C. neoformans and highlight experimental evidence supporting macropinocytosis as a potential mechanism of internalization and transcytosis. How macropinocytosis might be conclusively demonstrated in the context of C. neoformans is also discussed.
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Affiliation(s)
| | | | | | - Angie Gelli
- Department of Pharmacology, School of Medicine, University of California, Davis, Davis, CA, United States
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9
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Nawaz S, Kulyar MFEA, Mo Q, Yao W, Iqbal M, Li J. Homeostatic Regulation of Pro-Angiogenic and Anti-Angiogenic Proteins via Hedgehog, Notch Grid, and Ephrin Signaling in Tibial Dyschondroplasia. Animals (Basel) 2023; 13:3750. [PMID: 38136788 PMCID: PMC10740744 DOI: 10.3390/ani13243750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 11/21/2023] [Accepted: 11/28/2023] [Indexed: 12/24/2023] Open
Abstract
Precise coupling of two fundamental mechanisms, chondrogenesis and osteogenesis via angiogenesis, plays a crucial role during rapid proliferation of growth plates, and alteration in their balance might lead to pathogenic conditions. Tibial dyschondroplasia (TD) is characterized by an avascular, non-mineralized, jade-white "cartilaginous wedge" with impaired endochondral ossification and chondrocyte proliferation at the proximal end of a tibial bone in rapidly growing poultry birds. Developing vascular structures are dynamic with cartilage growth and are regulated through homeostatic balance among pro and anti-angiogenic proteins and cytokines. Pro-angiogenic factors involves a wide spectrum of multifactorial mitogens, such as vascular endothelial growth factors (VEGF), platelet-derived growth factors (PDGF), basic fibroblast growth factor (bFGF), placental growth factors, transforming growth factor-β (TGF-β), and TNF-α. Considering their regulatory role via the sonic hedgehog, notch-gridlock, and ephrin-B2/EphB4 pathways and inhibition through anti-angiogenic proteins like angiostatin, endostatin, decoy receptors, vasoinhibin, thrombospondin, PEX, and troponin, their possible role in persisting inflammatory conditions like TD was studied in the current literature review. Balanced apoptosis and angiogenesis are vital for physiological bone growth. Any homeostatic imbalance among apoptotic, angiogenetic, pro-angiogenic, or anti-angiogenic proteins ultimately leads to pathological bone conditions like TD and osteoarthritis. The current review might substantiate solid grounds for developing innovative therapeutics for diseases governed by the disproportion of angiogenesis and anti-angiogenesis proteins.
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Affiliation(s)
- Shah Nawaz
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China; (S.N.); (M.F.-e.-A.K.); (W.Y.); (M.I.)
| | - Muhammad Fakhar-e-Alam Kulyar
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China; (S.N.); (M.F.-e.-A.K.); (W.Y.); (M.I.)
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Quan Mo
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China; (S.N.); (M.F.-e.-A.K.); (W.Y.); (M.I.)
| | - Wangyuan Yao
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China; (S.N.); (M.F.-e.-A.K.); (W.Y.); (M.I.)
| | - Mudassar Iqbal
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China; (S.N.); (M.F.-e.-A.K.); (W.Y.); (M.I.)
- Faculty of Veterinary and Animal Sciences, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Jiakui Li
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China; (S.N.); (M.F.-e.-A.K.); (W.Y.); (M.I.)
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10
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Shi X, Lingerak R, Herting CJ, Ge Y, Kim S, Toth P, Wang W, Brown BP, Meiler J, Sossey-Alaoui K, Buck M, Himanen J, Hambardzumyan D, Nikolov DB, Smith AW, Wang B. Time-resolved live-cell spectroscopy reveals EphA2 multimeric assembly. Science 2023; 382:1042-1050. [PMID: 37972196 PMCID: PMC11114627 DOI: 10.1126/science.adg5314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Accepted: 11/01/2023] [Indexed: 11/19/2023]
Abstract
Ephrin type-A receptor 2 (EphA2) is a receptor tyrosine kinase that initiates both ligand-dependent tumor-suppressive and ligand-independent oncogenic signaling. We used time-resolved, live-cell fluorescence spectroscopy to show that the ligand-free EphA2 assembles into multimers driven by two types of intermolecular interactions in the ectodomain. The first type entails extended symmetric interactions required for ligand-induced receptor clustering and tumor-suppressive signaling that inhibits activity of the oncogenic extracellular signal-regulated kinase (ERK) and protein kinase B (AKT) protein kinases and suppresses cell migration. The second type is an asymmetric interaction between the amino terminus and the membrane proximal domain of the neighboring receptors, which supports oncogenic signaling and promotes migration in vitro and tumor invasiveness in vivo. Our results identify the molecular interactions that drive the formation of the EphA2 multimeric signaling clusters and reveal the pivotal role of EphA2 assembly in dictating its opposing functions in oncogenesis.
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Affiliation(s)
- Xiaojun Shi
- Division of Cancer Biology, Department of Medicine, MetroHealth Medical Center, Cleveland, OH 44109, USA
- Department of Medicine, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Ryan Lingerak
- Division of Cancer Biology, Department of Medicine, MetroHealth Medical Center, Cleveland, OH 44109, USA
- Department of Physiology and Biophysics, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Cameron J. Herting
- Department of Pediatrics, Aflac Cancer and Blood Disorders Center, Emory University, Atlanta, GA 30322, USA
| | - Yifan Ge
- Department of Molecular Biology, Massachusetts General Hospital and Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Soyeon Kim
- Division of Cancer Biology, Department of Medicine, MetroHealth Medical Center, Cleveland, OH 44109, USA
- Department of Medicine, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Paul Toth
- Department of Chemistry, University of Akron, Akron, OH 44325, USA
| | - Wei Wang
- Division of Cancer Biology, Department of Medicine, MetroHealth Medical Center, Cleveland, OH 44109, USA
| | - Benjamin P. Brown
- Department of Chemistry, Center for Structural Biology, Vanderbilt University, Nashville, TN 37232, USA
| | - Jens Meiler
- Department of Chemistry, Center for Structural Biology, Vanderbilt University, Nashville, TN 37232, USA
| | - Khalid Sossey-Alaoui
- Division of Cancer Biology, Department of Medicine, MetroHealth Medical Center, Cleveland, OH 44109, USA
| | - Matthias Buck
- Department of Physiology and Biophysics, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
- Case Comprehensive Cancer Center, Cleveland, OH 44106, USA
| | - Juha Himanen
- Structural Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Dolores Hambardzumyan
- Departments Oncological Sciences and Neurosurgery, Tisch Cancer Institute, Icahn School of Medicine, Mount Sinai, New York, NY 10029, USA
| | - Dimitar B. Nikolov
- Structural Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Adam W. Smith
- Department of Chemistry, University of Akron, Akron, OH 44325, USA
| | - Bingcheng Wang
- Division of Cancer Biology, Department of Medicine, MetroHealth Medical Center, Cleveland, OH 44109, USA
- Department of Medicine, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
- Case Comprehensive Cancer Center, Cleveland, OH 44106, USA
- Department of Pharmacology, Case Western Reserve University, Cleveland, OH 44106, USA
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11
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Ostrem BEL, Godfrey D, Caruso PA, Musolino PL. Monogenic Causes of Cerebrovascular Disease in Childhood: A Case Series. Pediatr Neurol 2023; 149:39-43. [PMID: 37776659 DOI: 10.1016/j.pediatrneurol.2023.08.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 08/16/2023] [Accepted: 08/18/2023] [Indexed: 10/02/2023]
Abstract
BACKGROUND Despite an increase in the number of genes associated with pediatric stroke, imaging phenotypes in children have not been well reported. Guidelines are needed to facilitate the identification and treatment of patients with monogenic causes of cerebrovascular disorders. METHODS We performed a retrospective review of imaging and medical records of patients aged zero to 21 years with monogenic causes of vascular malformations, small or large vessel disease, transient ischemic attacks, and/or ischemic or hemorrhagic stroke. We classified patients according to their imaging phenotype and reviewed neurological and systemic features and management strategies. We reviewed the literature to identify genes associated with cerebrovascular disorders presenting in childhood. RESULTS We identified 18 patients with monogenic causes of cerebrovascular disorders and classified each patient as belonging to one or more of three cerebrovascular phenotypes according to predominant imaging characteristics: small vessel disease, large vessel disease, and/or vascular malformations. Preventative treatments included aspirin, N-acetylcysteine, tocilizumab, therapeutic low-molecular-weight heparin, and resection of vascular malformations. CONCLUSIONS Classifying pediatric patients with cerebrovascular disorders by imaging phenotype can aid in determining the next steps in genetic testing and treatment.
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Affiliation(s)
- Bridget E L Ostrem
- Department of Neurology, Massachusetts General Hospital, Boston, Massachusetts; Department of Neurology, University of California, San Francisco, San Francisco, California.
| | - Deena Godfrey
- Department of Neurology, Massachusetts General Hospital, Boston, Massachusetts
| | - Paul A Caruso
- Department of Radiology, Massachusetts General Hospital, Boston, Massachusetts; Lenox Hill Radiology and Medical Imaging Associates, New York, New York
| | - Patricia L Musolino
- Department of Neurology, Massachusetts General Hospital, Boston, Massachusetts
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12
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Thompson D, Odufuwa AE, Brissette CA, Watt JA. Transcriptome and methylome of the supraoptic nucleus provides insights into the age-dependent loss of neuronal plasticity. Front Aging Neurosci 2023; 15:1223273. [PMID: 37711995 PMCID: PMC10498476 DOI: 10.3389/fnagi.2023.1223273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 08/08/2023] [Indexed: 09/16/2023] Open
Abstract
The age-dependent loss of neuronal plasticity is a well-known phenomenon that is poorly understood. The loss of this capacity for axonal regeneration is emphasized following traumatic brain injury, which is a major cause of disability and death among adults in the US. We have previously shown the intrinsic capacity of magnocellular neurons within the supraoptic nucleus to undergo axonal regeneration following unilateral axotomization in an age-dependent manner. The aim of this research was to determine the age-dependent molecular mechanisms that may underlie this phenomenon. As such, we characterized the transcriptome and DNA methylome of the supraoptic nucleus in uninjured 35-day old rats and 125-day old rats. Our data indicates the downregulation of a large number of axonogenesis related transcripts in 125-day old rats compared to 35-day old rats. Specifically, several semaphorin and ephrin genes were downregulated, as well as growth factors including FGF's, insulin-like growth factors (IGFs), and brain-derived neurotrophic factor (BDNF). Differential methylation analysis indicates enrichment of biological processes involved in axonogenesis and axon guidance. Conversely, we observed a robust and specific upregulation of MHCI related transcripts. This may involve the activator protein 1 (AP-1) transcription factor complex as motif analysis of differentially methylated regions indicate enrichment of AP-1 binding sites in hypomethylated regions. Together, our data suggests a loss of pro-regenerative capabilities with age which would prevent axonal growth and appropriate innervation following injury.
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Affiliation(s)
| | | | | | - John A. Watt
- Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND, United States
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13
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Hanover G, Vizeacoumar FS, Banerjee SL, Nair R, Dahiya R, Osornio-Hernandez AI, Morales AM, Freywald T, Himanen JP, Toosi BM, Bisson N, Vizeacoumar FJ, Freywald A. Integration of cancer-related genetic landscape of Eph receptors and ephrins with proteomics identifies a crosstalk between EPHB6 and EGFR. Cell Rep 2023; 42:112670. [PMID: 37392382 DOI: 10.1016/j.celrep.2023.112670] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 05/05/2023] [Accepted: 06/05/2023] [Indexed: 07/03/2023] Open
Abstract
Eph receptors and their ephrin ligands are viewed as promising targets for cancer treatment; however, targeting them is hindered by their context-dependent functionalities. To circumvent this, we explore molecular landscapes underlying their pro- and anti-malignant activities. Using unbiased bioinformatics approaches, we construct a cancer-related network of genetic interactions (GIs) of all Ephs and ephrins to assist in their therapeutic manipulation. We also apply genetic screening and BioID proteomics and integrate them with machine learning approaches to select the most relevant GIs of one Eph receptor, EPHB6. This identifies a crosstalk between EPHB6 and EGFR, and further experiments confirm the ability of EPHB6 to modulate EGFR signaling, enhancing the proliferation of cancer cells and tumor development. Taken together, our observations show EPHB6 involvement in EGFR action, suggesting its targeting might be beneficial in EGFR-dependent tumors, and confirm that the Eph family genetic interactome presented here can be effectively exploited in developing cancer treatment approaches.
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Affiliation(s)
- Glinton Hanover
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Saskatchewan, Royal University Hospital, Room 2841, 103 Hospital Drive, Saskatoon, SK S7N 0W8, Canada; Department of Biochemistry, Microbiology and Immunology, University of Saskatchewan, GA20 Health Sciences, 107 Wiggins Road, Saskatoon, SK S7N 5E5, Canada
| | - Frederick S Vizeacoumar
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Saskatchewan, Royal University Hospital, Room 2841, 103 Hospital Drive, Saskatoon, SK S7N 0W8, Canada
| | - Sara L Banerjee
- Department of Molecular Biology, Medical Biochemistry and Pathology, PROTEO and Centre de Recherche du Centre Hospitalier Universitaire (CHU) de Quebec-Université Laval, Division Oncologie, 9 Rue McMahon, Québec, QC G1R 3S3, Canada
| | - Raveena Nair
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Saskatchewan, Royal University Hospital, Room 2841, 103 Hospital Drive, Saskatoon, SK S7N 0W8, Canada; Department of Biochemistry, Microbiology and Immunology, University of Saskatchewan, GA20 Health Sciences, 107 Wiggins Road, Saskatoon, SK S7N 5E5, Canada
| | - Renuka Dahiya
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Saskatchewan, Royal University Hospital, Room 2841, 103 Hospital Drive, Saskatoon, SK S7N 0W8, Canada
| | - Ana I Osornio-Hernandez
- Department of Molecular Biology, Medical Biochemistry and Pathology, PROTEO and Centre de Recherche du Centre Hospitalier Universitaire (CHU) de Quebec-Université Laval, Division Oncologie, 9 Rue McMahon, Québec, QC G1R 3S3, Canada
| | - Alain Morejon Morales
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Saskatchewan, Royal University Hospital, Room 2841, 103 Hospital Drive, Saskatoon, SK S7N 0W8, Canada; Department of Biochemistry, Microbiology and Immunology, University of Saskatchewan, GA20 Health Sciences, 107 Wiggins Road, Saskatoon, SK S7N 5E5, Canada
| | - Tanya Freywald
- Cancer Research, Saskatchewan Cancer Agency and Division of Oncology, University of Saskatchewan, 4D30.2 Health Sciences Building, 107 Wiggins Road, Saskatoon, SK S7N 5E5, Canada
| | - Juha P Himanen
- Department of Biochemistry, University of Turku, 20500 Turku, Finland
| | - Behzad M Toosi
- Department of Small Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, SK S7N 5B4, Canada
| | - Nicolas Bisson
- Department of Molecular Biology, Medical Biochemistry and Pathology, PROTEO and Centre de Recherche du Centre Hospitalier Universitaire (CHU) de Quebec-Université Laval, Division Oncologie, 9 Rue McMahon, Québec, QC G1R 3S3, Canada.
| | - Franco J Vizeacoumar
- Cancer Research, Saskatchewan Cancer Agency and Division of Oncology, University of Saskatchewan, 4D30.2 Health Sciences Building, 107 Wiggins Road, Saskatoon, SK S7N 5E5, Canada.
| | - Andrew Freywald
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Saskatchewan, Royal University Hospital, Room 2841, 103 Hospital Drive, Saskatoon, SK S7N 0W8, Canada.
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14
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Ujiié Y, Ishitani Y, Nagai Y, Takaki Y, Toyofuku T, Ishii S. Unique evolution of foraminiferal calcification to survive global changes. SCIENCE ADVANCES 2023; 9:eadd3584. [PMID: 37343099 DOI: 10.1126/sciadv.add3584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 05/15/2023] [Indexed: 06/23/2023]
Abstract
Foraminifera, the most ancient known calcium carbonate-producing eukaryotes, are crucial players in global biogeochemical cycles and well-used environmental indicators in biogeosciences. However, little is known about their calcification mechanisms. This impedes understanding the organismal responses to ocean acidification, which alters marine calcium carbonate production, potentially leading to biogeochemical cycle changes. We conducted comparative single-cell transcriptomics and fluorescent microscopy and identified calcium ion (Ca2+) transport/secretion genes and α-carbonic anhydrases that control calcification in a foraminifer. They actively take up Ca2+ to boost mitochondrial adenosine triphosphate synthesis during calcification but need to pump excess intracellular Ca2+ to the calcification site to prevent cell death. Unique α-carbonic anhydrase genes induce the generation of bicarbonate and proton from multiple CO2 sources. These control mechanisms have evolved independently since the Precambrian to enable the development of large cells and calcification despite decreasing Ca2+ concentrations and pH in seawater. The present findings provide previously unknown insights into the calcification mechanisms and their subsequent function in enduring ocean acidification.
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Affiliation(s)
- Yurika Ujiié
- Marine Core Research Institute, Kochi University, Kōchi, Japan
| | - Yoshiyuki Ishitani
- Institute for Extra-cutting-edge Science and Technology Avant-garde Research (X-star), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Japan
| | - Yukiko Nagai
- Institute for Extra-cutting-edge Science and Technology Avant-garde Research (X-star), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Japan
- National Museum of Nature and Science, Tokyo, Japan
| | - Yoshihiro Takaki
- Institute for Extra-cutting-edge Science and Technology Avant-garde Research (X-star), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Japan
| | - Takashi Toyofuku
- Institute for Extra-cutting-edge Science and Technology Avant-garde Research (X-star), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Japan
- Tokyo University of Marine Science and Technology (TUMSAT), Tokyo, Japan
| | - Shun'ichi Ishii
- Institute for Extra-cutting-edge Science and Technology Avant-garde Research (X-star), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Japan
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15
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Tang L, Liu C, Rosenberger P. Platelet formation and activation are influenced by neuronal guidance proteins. Front Immunol 2023; 14:1206906. [PMID: 37398659 PMCID: PMC10310924 DOI: 10.3389/fimmu.2023.1206906] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Accepted: 06/05/2023] [Indexed: 07/04/2023] Open
Abstract
Platelets are anucleate blood cells derived from megakaryocytes. They link the fundamental functions of hemostasis, inflammation and host defense. They undergo intracellular calcium flux, negatively charged phospholipid translocation, granule release and shape change to adhere to collagen, fibrin and each other, forming aggregates, which are key to several of their functions. In all these dynamic processes, the cytoskeleton plays a crucial role. Neuronal guidance proteins (NGPs) form attractive and repulsive signals to drive neuronal axon navigation and thus refine neuronal circuits. By binding to their target receptors, NGPs rearrange the cytoskeleton to mediate neuron motility. In recent decades, evidence has indicated that NGPs perform important immunomodulatory functions and influence platelet function. In this review, we highlight the roles of NGPs in platelet formation and activation.
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16
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Lin HH, Kuo MW, Fan TC, Yu AL, Yu J. YULINK regulates vascular formation in zebrafish and HUVECs. Biol Res 2023; 56:7. [PMID: 36843032 PMCID: PMC9969694 DOI: 10.1186/s40659-023-00415-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 01/18/2023] [Indexed: 02/28/2023] Open
Abstract
BACKGROUND The distinct arterial and venous cell fates are dictated by a combination of various genetic factors which form diverse types of blood vessels such as arteries, veins, and capillaries. We report here that YULINK protein is involved in vasculogenesis, especially venous formation. METHODS In this manuscript, we employed gene knockdown, yeast two-hybrid, FLIM-FRET, immunoprecipitation, and various imaging technologies to investigate the role of YULINK gene in zebrafish and human umbilical vein endothelial cells (HUVECs). RESULTS Knockdown of YULINK during the arterial-venous developmental stage of zebrafish embryos led to the defective venous formation and abnormal vascular plexus formation. Knockdown of YULINK in HUVECs impaired their ability to undergo cell migration and differentiation into a capillary-like tube formation. In addition, the phosphorylated EPHB4 was decreased in YULINK knockdown HUVECs. Yeast two-hybrid, FLIM-FRET, immunoprecipitation, as well as imaging technologies showed that YULINK colocalized with endosome related proteins (EPS15, RAB33B or TICAM2) and markers (Clathrin and RHOB). VEGF-induced VEGFR2 internalization was also compromised in YULINK knockdown HUVECs, demonstrating to the involvement of YULINK. CONCLUSION This study suggests that YULINK regulates vasculogenesis, possibly through endocytosis in zebrafish and HUVECs.
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Affiliation(s)
- Hsin-Hung Lin
- grid.28665.3f0000 0001 2287 1366Chemical Biology and Molecular Biophysics Program, International Graduate Program, Academia Sinica, Taipei, Taiwan ,grid.454210.60000 0004 1756 1461Institute of Stem Cell and Translational Cancer Research, Chang Gung Memorial Hospital at Linkou, 333 Taoyuan, Taiwan
| | - Ming-Wei Kuo
- grid.454210.60000 0004 1756 1461Institute of Stem Cell and Translational Cancer Research, Chang Gung Memorial Hospital at Linkou, 333 Taoyuan, Taiwan
| | - Tan-Chi Fan
- grid.454210.60000 0004 1756 1461Institute of Stem Cell and Translational Cancer Research, Chang Gung Memorial Hospital at Linkou, 333 Taoyuan, Taiwan
| | - Alice L. Yu
- grid.454210.60000 0004 1756 1461Institute of Stem Cell and Translational Cancer Research, Chang Gung Memorial Hospital at Linkou, 333 Taoyuan, Taiwan ,grid.266100.30000 0001 2107 4242Department of Pediatrics, University of California, San Diego, CA USA
| | - John Yu
- Institute of Stem Cell and Translational Cancer Research, Chang Gung Memorial Hospital at Linkou, 333, Taoyuan, Taiwan. .,Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, Taiwan.
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17
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Vascular and Neuronal Network Formation Regulated by Growth Factors and Guidance Cues. Life (Basel) 2023; 13:life13020283. [PMID: 36836641 PMCID: PMC9965086 DOI: 10.3390/life13020283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/15/2022] [Accepted: 01/18/2023] [Indexed: 01/21/2023] Open
Abstract
Blood vessels and nerves are distributed throughout the body and show a high degree of anatomical parallelism and functional crosstalk. These networks transport oxygen, nutrients, and information to maintain homeostasis. Thus, disruption of network formation can cause diseases. Nervous system development requires the navigation of the axons of neurons to their correct destination. Blood vessel formation occurs via vasculogenesis and angiogenesis. Vasculogenesis is the process of de novo blood vessel formation, and angiogenesis is the process whereby endothelial cells sprout from pre-existing vessels. Both developmental processes require guidance molecules to establish precise branching patterns of these systems in the vertebrate body. These network formations are regulated by growth factors, such as vascular endothelial growth factor; and guidance cues, such as ephrin, netrin, semaphorin, and slit. Neuronal and vascular structures extend lamellipodia and filopodia, which sense guidance cues that are mediated by the Rho family and actin cytosol rearrangement, to migrate to the goal during development. Furthermore, endothelial cells regulate neuronal development and vice versa. In this review, we describe the guidance molecules that regulate neuronal and vascular network formation.
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18
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Wang L, Peng Q, Xie Y, Yin N, Xu J, Chen A, Yi J, Shi W, Tang J, Xiang J. Cell-cell contact-driven EphB1 cis- and trans- signalings regulate cancer stem cells enrichment after chemotherapy. Cell Death Dis 2022; 13:980. [PMID: 36402751 PMCID: PMC9675789 DOI: 10.1038/s41419-022-05385-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 10/24/2022] [Accepted: 10/27/2022] [Indexed: 11/21/2022]
Abstract
Reactivation of chemotherapy-induced dormant cancer cells is the main cause of relapse and metastasis. The molecular mechanisms underlying remain to be elucidated. In this study, we introduced a cellular model that mimics the process of cisplatin responsiveness in NSCLC patients. We found that during the process of dormancy and reactivation induced by cisplatin, NSCLC cells underwent sequential EMT-MET with enrichment of cancer stem cells. The ATAC-seq combined with motif analysis revealed that OCT4-SOX2-TCF-NANOG motifs were associated with the enrichment of cancer stem cells induced by chemotherapy. Gene expression profiling suggested a dynamic regulatory mechanism during the process of enrichment of cancer stem cells, where Nanog showed upregulation in the dormant state and SOX2 showed upregulation in the reactivated state. Further, we showed that EphB1 and p-EphB1 showed dynamic expression in the process of cancer cell dormancy and reactivation, where the expression profiles of EphB1 and p-EphB1 showed negatively correlated. In the dormant EMT cells which showed disrupted cell-cell contacts, ligand-independent EphB1 promoted entry of lung cancer cells into dormancy through activating p-p38 and downregulating E-cadherin. On the contrary, in the state of MET, in which cell-cell adhesion was recovered, interactions of EphB1 and ligand EphrinB2 in trans promoted the stemness of cancer cells through upregulating Nanog and Sox2. In conclusion, lung cancer stem cells were enriched during the process of cellular response to chemotherapy. EphB1 cis- and trans- signalings function in the dormant and reactivated state of lung cancer cells respectively. It may provide a therapeutic strategy that target the evolution process of cancer cells induced by chemotherapy.
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Affiliation(s)
- Lujuan Wang
- grid.216417.70000 0001 0379 7164Hunan Cancer Hospital, the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan PR China ,grid.216417.70000 0001 0379 7164Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, Hunan China ,grid.216417.70000 0001 0379 7164NHC Key Laboratory of Carcinogenesis and the Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan China ,grid.216417.70000 0001 0379 7164Hunan Key Laboratory of Tumor Models and Individualized Medicine, Department of Orthopaedics, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Qiu Peng
- grid.216417.70000 0001 0379 7164Hunan Cancer Hospital, the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan PR China ,grid.216417.70000 0001 0379 7164Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, Hunan China ,grid.216417.70000 0001 0379 7164NHC Key Laboratory of Carcinogenesis and the Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan China
| | - Yaohuan Xie
- grid.216417.70000 0001 0379 7164Hunan Cancer Hospital, the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan PR China ,grid.216417.70000 0001 0379 7164Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, Hunan China ,grid.216417.70000 0001 0379 7164NHC Key Laboratory of Carcinogenesis and the Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan China
| | - Na Yin
- grid.216417.70000 0001 0379 7164Hunan Cancer Hospital, the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan PR China ,grid.216417.70000 0001 0379 7164Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, Hunan China ,grid.216417.70000 0001 0379 7164NHC Key Laboratory of Carcinogenesis and the Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan China
| | - Jiaqi Xu
- grid.216417.70000 0001 0379 7164Hunan Cancer Hospital, the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan PR China ,grid.216417.70000 0001 0379 7164Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, Hunan China ,grid.216417.70000 0001 0379 7164NHC Key Laboratory of Carcinogenesis and the Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan China
| | - Anqi Chen
- grid.216417.70000 0001 0379 7164Department of thoracic surgery, the Second Xiangya Hospital, Central South University, Changsha, Hunan 410013 China ,grid.216417.70000 0001 0379 7164Hunan Key laboratory of Early Diagnosis and Precise Treatment of Lung Cancer, the Second Xiangya Hospital, Central South University, Changsha, 410013 Hunan China
| | - Junqi Yi
- grid.216417.70000 0001 0379 7164Department of thoracic surgery, the Second Xiangya Hospital, Central South University, Changsha, Hunan 410013 China ,grid.216417.70000 0001 0379 7164Hunan Key laboratory of Early Diagnosis and Precise Treatment of Lung Cancer, the Second Xiangya Hospital, Central South University, Changsha, 410013 Hunan China
| | - Wenhua Shi
- grid.216417.70000 0001 0379 7164Hunan Cancer Hospital, the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan PR China ,grid.216417.70000 0001 0379 7164Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, Hunan China ,grid.216417.70000 0001 0379 7164NHC Key Laboratory of Carcinogenesis and the Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan China
| | - Jingqun Tang
- grid.216417.70000 0001 0379 7164Department of thoracic surgery, the Second Xiangya Hospital, Central South University, Changsha, Hunan 410013 China ,grid.216417.70000 0001 0379 7164Hunan Key laboratory of Early Diagnosis and Precise Treatment of Lung Cancer, the Second Xiangya Hospital, Central South University, Changsha, 410013 Hunan China
| | - Juanjuan Xiang
- grid.216417.70000 0001 0379 7164Hunan Cancer Hospital, the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan PR China ,grid.216417.70000 0001 0379 7164Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, Hunan China ,grid.216417.70000 0001 0379 7164NHC Key Laboratory of Carcinogenesis and the Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan China
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Mapping the Universe of Eph Receptor and Ephrin Ligand Transcripts in Epithelial and Fiber Cells of the Eye Lens. Cells 2022; 11:cells11203291. [PMID: 36291158 PMCID: PMC9600312 DOI: 10.3390/cells11203291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 10/14/2022] [Accepted: 10/15/2022] [Indexed: 11/17/2022] Open
Abstract
The eye lens is a transparent, ellipsoid organ in the anterior chamber of the eye that is required for fine focusing of light onto the retina to transmit a clear image. Cataracts, defined as any opacity in the lens, remains the leading cause of blindness in the world. Recent studies in humans and mice indicate that Eph–ephrin bidirectional signaling is important for maintaining lens transparency. Specifically, mutations and polymorphisms in the EphA2 receptor and the ephrin-A5 ligand have been linked to congenital and age-related cataracts. It is unclear what other variants of Ephs and ephrins are expressed in the lens or whether there is preferential expression in epithelial vs. fiber cells. We performed a detailed analysis of Eph receptor and ephrin ligand mRNA transcripts in whole mouse lenses, epithelial cell fractions, and fiber cell fractions using a new RNA isolation method. We compared control samples with EphA2 knockout (KO) and ephrin-A5 KO samples. Our results revealed the presence of transcripts for 12 out of 14 Eph receptors and 8 out of 8 ephrin ligands in various fractions of lens cells. Using specific primer sets, RT-PCR, and sequencing, we verified the variant of each gene that is expressed, and we found two epithelial-cell-specific genes. Surprisingly, we also identified one Eph receptor variant that is expressed in KO lens fibers but is absent from control lens fibers. We also identified one low expression ephrin variant that is only expressed in ephrin-A5 control samples. These results indicate that the lens expresses almost all Ephs and ephrins, and there may be many receptor–ligand pairs that play a role in lens homeostasis.
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Wirth D, Paul MD, Pasquale EB, Hristova K. Direct quantification of ligand-induced lipid and protein microdomains with distinctive signaling properties. CHEMSYSTEMSCHEM 2022; 4:e202200011. [PMID: 36337751 PMCID: PMC9634703 DOI: 10.1002/syst.202200011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Indexed: 11/08/2022]
Abstract
Lipid rafts are ordered lipid domains that are enriched in saturated lipids, such as the ganglioside GM1. While lipid rafts are believed to exist in cells and to serve as signaling platforms through their enrichment in signaling components, they have not been directly observed in the plasma membrane without treatments that artificially cluster GM1 into large lattices. Here, we report that microscopic GM1-enriched domains can form, in the plasma membrane of live mammalian cells expressing the EphA2 receptor tyrosine kinase in response to its ligand ephrinA1-Fc. The GM1-enriched microdomains form concomitantly with EphA2-enriched microdomains. To gain insight into how plasma membrane heterogeneity controls signaling, we quantify the degree of EphA2 segregation and study initial EphA2 signaling steps in both EphA2-enriched and EphA2-depleted domains. By measuring dissociation constants, we demonstrate that the propensity of EphA2 to oligomerize is similar in EphA2-enriched and -depleted domains. However, surprisingly, EphA2 interacts preferentially with its downstream effector SRC in EphA2-depleted domains. The ability to induce microscopic GM1-enriched domains in live cells using a ligand for a transmembrane receptor will give us unprecedented opportunities to study the biophysical chemistry of lipid rafts.
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Affiliation(s)
- Daniel Wirth
- Department of Materials Science and Engineering, Johns Hopkins University, 3400 Charles Street, Baltimore, MD 21218
| | - Michael D. Paul
- Program in Molecular Biophysics, Johns Hopkins University, 3400 Charles Street, Baltimore, MD 21218
| | - Elena B. Pasquale
- Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Road, La Jolla, CA 92037
| | - Kalina Hristova
- Department of Materials Science and Engineering, Johns Hopkins University, 3400 Charles Street, Baltimore, MD 21218
- Program in Molecular Biophysics, Johns Hopkins University, 3400 Charles Street, Baltimore, MD 21218
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21
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Coral holobiont cues prime Endozoicomonas for a symbiotic lifestyle. THE ISME JOURNAL 2022; 16:1883-1895. [PMID: 35444262 PMCID: PMC9296628 DOI: 10.1038/s41396-022-01226-7] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 02/23/2022] [Accepted: 03/14/2022] [Indexed: 12/11/2022]
Abstract
Endozoicomonas are prevalent, abundant bacterial associates of marine animals, including corals. Their role in holobiont health and functioning, however, remains poorly understood. To identify potential interactions within the coral holobiont, we characterized the novel isolate Endozoicomonas marisrubri sp. nov. 6c and assessed its transcriptomic and proteomic response to tissue extracts of its native host, the Red Sea coral Acropora humilis. We show that coral tissue extracts stimulated differential expression of genes putatively involved in symbiosis establishment via the modulation of the host immune response by E. marisrubri 6c, such as genes for flagellar assembly, ankyrins, ephrins, and serpins. Proteome analyses revealed that E. marisrubri 6c upregulated vitamin B1 and B6 biosynthesis and glycolytic processes in response to holobiont cues. Our results suggest that the priming of Endozoicomonas for a symbiotic lifestyle involves the modulation of host immunity and the exchange of essential metabolites with other holobiont members. Consequently, Endozoicomonas may play an important role in holobiont nutrient cycling and may therefore contribute to coral health, acclimatization, and adaptation.
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22
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New Diagnostic Biomarker-Soluble Erythropoietin-producing hepatocellular receptor A2 (EphA2) for colon cancer. Indian J Surg 2022. [DOI: 10.1007/s12262-022-03360-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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23
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Murugan S, Cheng C. Roles of Eph-Ephrin Signaling in the Eye Lens Cataractogenesis, Biomechanics, and Homeostasis. Front Cell Dev Biol 2022; 10:852236. [PMID: 35295853 PMCID: PMC8918484 DOI: 10.3389/fcell.2022.852236] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 02/04/2022] [Indexed: 01/26/2023] Open
Abstract
The eye lens is responsible for fine focusing of light onto the retina, and its function relies on tissue transparency and biomechanical properties. Recent studies have demonstrated the importance of Eph-ephrin signaling for the maintenance of life-long lens homeostasis. The binding of Eph receptor tyrosine kinases to ephrin ligands leads to a bidirectional signaling pathway that controls many cellular processes. In particular, dysfunction of the receptor EphA2 or the ligand ephrin-A5 lead to a variety of congenital and age-related cataracts, defined as any opacity in the lens, in human patients. In addition, a wealth of animal studies reveal the unique and overlapping functions of EphA2 and ephrin-A5 in lens cell shape, cell organization and patterning, and overall tissue optical and biomechanical properties. Significant differences in lens phenotypes of mouse models with disrupted EphA2 or ephrin-A5 signaling indicate that genetic modifiers likely affect cataract phenotypes and progression, suggesting a possible reason for the variability of human cataracts due to Eph-ephrin dysfunction. This review summarizes the roles of EphA2 and ephrin-A5 in the lens and suggests future avenues of study.
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24
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Cecchini A, Cornelison DDW. Eph/Ephrin-Based Protein Complexes: The Importance of cis Interactions in Guiding Cellular Processes. Front Mol Biosci 2022; 8:809364. [PMID: 35096972 PMCID: PMC8793696 DOI: 10.3389/fmolb.2021.809364] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 12/21/2021] [Indexed: 12/13/2022] Open
Abstract
Although intracellular signal transduction is generally represented as a linear process that transmits stimuli from the exterior of a cell to the interior via a transmembrane receptor, interactions with additional membrane-associated proteins are often critical to its success. These molecules play a pivotal role in mediating signaling via the formation of complexes in cis (within the same membrane) with primary effectors, particularly in the context of tumorigenesis. Such secondary effectors may act to promote successful signaling by mediating receptor-ligand binding, recruitment of molecular partners for the formation of multiprotein complexes, or differential signaling outcomes. One signaling family whose contact-mediated activity is frequently modulated by lateral interactions at the cell surface is Eph/ephrin (EphA and EphB receptor tyrosine kinases and their ligands ephrin-As and ephrin-Bs). Through heterotypic interactions in cis, these molecules can promote a diverse range of cellular activities, including some that are mutually exclusive (cell proliferation and cell differentiation, or adhesion and migration). Due to their broad expression in most tissues and their promiscuous binding within and across classes, the cellular response to Eph:ephrin interaction is highly variable between cell types and is dependent on the cellular context in which binding occurs. In this review, we will discuss interactions between molecules in cis at the cell membrane, with emphasis on their role in modulating Eph/ephrin signaling.
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Affiliation(s)
- Alessandra Cecchini
- Division of Biological Sciences, University of Missouri, Columbia, MO, United States
- Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, MO, United States
| | - D. D. W. Cornelison
- Division of Biological Sciences, University of Missouri, Columbia, MO, United States
- Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, MO, United States
- *Correspondence: D. D. W. Cornelison,
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25
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Szabo MP, Mishra S, Knupp A, Young JE. The role of Alzheimer's disease risk genes in endolysosomal pathways. Neurobiol Dis 2022; 162:105576. [PMID: 34871734 PMCID: PMC9071255 DOI: 10.1016/j.nbd.2021.105576] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 11/23/2021] [Accepted: 12/02/2021] [Indexed: 12/25/2022] Open
Abstract
There is ample pathological and biological evidence for endo-lysosomal dysfunction in Alzheimer's disease (AD) and emerging genetic studies repeatedly implicate endo-lysosomal genes as associated with increased AD risk. The endo-lysosomal network (ELN) is essential for all cell types of the central nervous system (CNS), yet each unique cell type utilizes cellular trafficking differently (see Fig. 1). Challenges ahead involve defining the role of AD associated genes in the functionality of the endo-lysosomal network (ELN) and understanding how this impacts the cellular dysfunction that occurs in AD. This is critical to the development of new therapeutics that will impact, and potentially reverse, early disease phenotypes. Here we review some early evidence of ELN dysfunction in AD pathogenesis and discuss the role of selected AD-associated risk genes in this pathway. In particular, we review genes that have been replicated in multiple genome-wide association studies(Andrews et al., 2020; Jansen et al., 2019; Kunkle et al., 2019; Lambert et al., 2013; Marioni et al., 2018) and reviewed in(Andrews et al., 2020) that have defined roles in the endo-lysosomal network. These genes include SORL1, an AD risk gene harboring both rare and common variants associated with AD risk and a role in trafficking cargo, including APP, through the ELN; BIN1, a regulator of clathrin-mediated endocytosis whose expression correlates with Tau pathology; CD2AP, an AD risk gene with roles in endosome morphology and recycling; PICALM, a clathrin-binding protein that mediates trafficking between the trans-Golgi network and endosomes; and Ephrin Receptors, a family of receptor tyrosine kinases with AD associations and interactions with other AD risk genes. Finally, we will discuss how human cellular models can elucidate cell-type specific differences in ELN dysfunction in AD and aid in therapeutic development.
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Affiliation(s)
- Marcell P Szabo
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA 98109, United States of America; Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA 98109, United States of America
| | - Swati Mishra
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA 98109, United States of America; Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA 98109, United States of America
| | - Allison Knupp
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA 98109, United States of America; Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA 98109, United States of America
| | - Jessica E Young
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA 98109, United States of America; Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA 98109, United States of America.
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26
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Zhang J, Chen Y, Yan L, Zhang X, Zheng X, Qi J, Yang F, Li J. EphA3 deficiency in hypothalamus promotes high fat diet-induced obesity in mice. J Biomed Res 2022; 37:179-193. [PMID: 37013864 DOI: 10.7555/jbr.36.20220168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
Erythropoietin-producing hepatocellular carcinoma A3 (EphA3) is a member of the largest subfamily of tyrosine kinase receptors-Eph receptors. Previous studies have shown that EphA3 is associated with tissue development. Recently, we have found that the expression of EphA3 is elevated in the hypothalamus of mice with diet-induced obesity (DIO). However, the role of EphA3 in hypothalamic-controlled energy metabolism remains unclear. In the current study, we demonstrated that the deletion of EphA3 in the hypothalamus by CRISPR/Cas9-mediated gene editing promotes obesity in male mice with high-fat diet feeding rather than those with normal chow diet feeding. Moreover, the deletion of hypothalamic EphA3 promotes high-fat DIO by increasing food intake and reducing energy expenditure. Knockdown of EphA3 leads to smaller intracellular vesicles in GT1-7 cells. The current study reveals that hypothalamic EphA3 plays important roles in promoting DIO.
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Affiliation(s)
- Jubiao Zhang
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu 211166, China
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu 211166, China
- The Affiliated Eye Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Yang Chen
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu 211166, China
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu 211166, China
- The Affiliated Eye Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Lihong Yan
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu 211166, China
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu 211166, China
- The Affiliated Eye Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Xin Zhang
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu 211166, China
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu 211166, China
- The Affiliated Eye Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Xiaoyan Zheng
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu 211166, China
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Junxia Qi
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu 211166, China
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Fen Yang
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu 211166, China
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Juxue Li
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu 211166, China
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu 211166, China
- The Affiliated Eye Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
- The Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210011, China
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27
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Chan JM, Quintanal-Villalonga Á, Gao VR, Xie Y, Allaj V, Chaudhary O, Masilionis I, Egger J, Chow A, Walle T, Mattar M, Yarlagadda DVK, Wang JL, Uddin F, Offin M, Ciampricotti M, Qeriqi B, Bahr A, de Stanchina E, Bhanot UK, Lai WV, Bott MJ, Jones DR, Ruiz A, Baine MK, Li Y, Rekhtman N, Poirier JT, Nawy T, Sen T, Mazutis L, Hollmann TJ, Pe'er D, Rudin CM. Signatures of plasticity, metastasis, and immunosuppression in an atlas of human small cell lung cancer. Cancer Cell 2021; 39:1479-1496.e18. [PMID: 34653364 PMCID: PMC8628860 DOI: 10.1016/j.ccell.2021.09.008] [Citation(s) in RCA: 185] [Impact Index Per Article: 61.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 07/26/2021] [Accepted: 09/15/2021] [Indexed: 12/11/2022]
Abstract
Small cell lung cancer (SCLC) is an aggressive malignancy that includes subtypes defined by differential expression of ASCL1, NEUROD1, and POU2F3 (SCLC-A, -N, and -P, respectively). To define the heterogeneity of tumors and their associated microenvironments across subtypes, we sequenced 155,098 transcriptomes from 21 human biospecimens, including 54,523 SCLC transcriptomes. We observe greater tumor diversity in SCLC than lung adenocarcinoma, driven by canonical, intermediate, and admixed subtypes. We discover a PLCG2-high SCLC phenotype with stem-like, pro-metastatic features that recurs across subtypes and predicts worse overall survival. SCLC exhibits greater immune sequestration and less immune infiltration than lung adenocarcinoma, and SCLC-N shows less immune infiltrate and greater T cell dysfunction than SCLC-A. We identify a profibrotic, immunosuppressive monocyte/macrophage population in SCLC tumors that is particularly associated with the recurrent, PLCG2-high subpopulation.
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Affiliation(s)
- Joseph M Chan
- Department of Medicine, Thoracic Oncology Service, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Program for Computational and Systems Biology, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY 10016, USA
| | - Álvaro Quintanal-Villalonga
- Department of Medicine, Thoracic Oncology Service, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Vianne Ran Gao
- Program for Computational and Systems Biology, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY 10016, USA; Weill Cornell Medical College, New York, NY 10065, USA
| | - Yubin Xie
- Program for Computational and Systems Biology, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY 10016, USA; Weill Cornell Medical College, New York, NY 10065, USA
| | - Viola Allaj
- Department of Medicine, Thoracic Oncology Service, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Ojasvi Chaudhary
- Program for Computational and Systems Biology, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY 10016, USA
| | - Ignas Masilionis
- Program for Computational and Systems Biology, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY 10016, USA
| | - Jacklynn Egger
- Department of Medicine, Thoracic Oncology Service, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Andrew Chow
- Department of Medicine, Thoracic Oncology Service, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Thomas Walle
- Department of Medical Oncology; German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Clinical Cooperation Unit Virotherapy; National Center for Tumor Diseases (NCT), Heidelberg, Germany
| | - Marissa Mattar
- Antitumor Assessment Core Facility, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Dig V K Yarlagadda
- Program for Computational and Systems Biology, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY 10016, USA
| | - James L Wang
- Department of Computer Science, Columbia University, New York, NY 10027, USA
| | - Fathema Uddin
- Department of Medicine, Thoracic Oncology Service, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Michael Offin
- Department of Medicine, Thoracic Oncology Service, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Metamia Ciampricotti
- Department of Medicine, Thoracic Oncology Service, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Besnik Qeriqi
- Antitumor Assessment Core Facility, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Amber Bahr
- Antitumor Assessment Core Facility, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Elisa de Stanchina
- Antitumor Assessment Core Facility, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Molecular Pharmacology Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Umesh K Bhanot
- Precision Pathology Center, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - W Victoria Lai
- Department of Medicine, Thoracic Oncology Service, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Matthew J Bott
- Thoracic Service, Department of Surgery, Fiona and Stanley Druckenmiller Center for Lung Cancer Research, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - David R Jones
- Thoracic Service, Department of Surgery, Fiona and Stanley Druckenmiller Center for Lung Cancer Research, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Arvin Ruiz
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Marina K Baine
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Yanyun Li
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Natasha Rekhtman
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - John T Poirier
- Perlmutter Cancer Center, New York University Langone Health, New York, NY 10065, USA
| | - Tal Nawy
- Program for Computational and Systems Biology, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY 10016, USA
| | - Triparna Sen
- Department of Medicine, Thoracic Oncology Service, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Weill Cornell Medical College, New York, NY 10065, USA
| | - Linas Mazutis
- Institute of Biotechnology, Vilnius University, Vilnius, Lithuania
| | - Travis J Hollmann
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Dana Pe'er
- Program for Computational and Systems Biology, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY 10016, USA; Parker Institute for Cancer Immunotherapy, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA.
| | - Charles M Rudin
- Department of Medicine, Thoracic Oncology Service, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Molecular Pharmacology Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Weill Cornell Medical College, New York, NY 10065, USA.
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28
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Chen Y, Liu Y, Gao X. The Application of Single-Cell Technologies in Cardiovascular Research. Front Cell Dev Biol 2021; 9:751371. [PMID: 34708045 PMCID: PMC8542723 DOI: 10.3389/fcell.2021.751371] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Accepted: 09/21/2021] [Indexed: 12/21/2022] Open
Abstract
Cardiovascular diseases (CVDs) are the leading cause of deaths in the world. The intricacies of the cellular composition and tissue microenvironment in heart and vasculature complicate the dissection of molecular mechanisms of CVDs. Over the past decade, the rapid development of single-cell omics technologies generated vast quantities of information at various biological levels, which have shed light on the cellular and molecular dynamics in cardiovascular development, homeostasis and diseases. Here, we summarize the latest single-cell omics techniques, and show how they have facilitated our understanding of cardiovascular biology. We also briefly discuss the clinical value and future outlook of single-cell applications in the field.
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Affiliation(s)
- Yinan Chen
- Fuwai Hospital, Chinese Academy of Medical Sciences, Shenzhen, China.,State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yang Liu
- Department of Vascular Surgery, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xiang Gao
- Department of Vascular Surgery, The Second Hospital of Hebei Medical University, Shijiazhuang, China
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29
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Abstract
Brain arteriovenous malformation (bAVM) is the most common cause of intracranial hemorrhage (ICH), particularly in young patients. However, the exact cause of bAVM bleeding and rupture is not yet fully understood. In bAVMs, blood bypasses the entire capillary bed and directly flows from arteries to veins. The vessel walls in bAVMs have structural defects, which impair vascular integrity. Mural cells are essential structural and functional components of blood vessels and play a critical role in maintaining vascular integrity. Changes in mural cell number and coverage have been implicated in bAVMs. In this review, we discussed the roles of mural cells in bAVM pathogenesis. We focused on 1) the recent advances in human and animal studies of bAVMs; 2) the importance of mural cells in vascular integrity; 3) the regulatory signaling pathways that regulate mural cell function. More specifically, the platelet-derived growth factor-B (PDGF-B)/PDGF receptor-β (PDGFR-β), EphrinB2/EphB4, and angiopoietins/tie2 signaling pathways that regulate mural cell-recruitment during vascular remodeling were discussed in detail.
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30
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Light TP, Brun D, Guardado-Calvo P, Pederzoli R, Haouz A, Neipel F, Rey FA, Hristova K, Backovic M. Human herpesvirus 8 molecular mimicry of ephrin ligands facilitates cell entry and triggers EphA2 signaling. PLoS Biol 2021; 19:e3001392. [PMID: 34499637 PMCID: PMC8454987 DOI: 10.1371/journal.pbio.3001392] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 09/21/2021] [Accepted: 08/16/2021] [Indexed: 01/19/2023] Open
Abstract
Human herpesvirus 8 (HHV-8) is an oncogenic virus that enters cells by fusion of the viral and endosomal cellular membranes in a process mediated by viral surface glycoproteins. One of the cellular receptors hijacked by HHV-8 to gain access to cells is the EphA2 tyrosine kinase receptor, and the mechanistic basis of EphA2-mediated viral entry remains unclear. Using X-ray structure analysis, targeted mutagenesis, and binding studies, we here show that the HHV-8 envelope glycoprotein complex H and L (gH/gL) binds with subnanomolar affinity to EphA2 via molecular mimicry of the receptor’s cellular ligands, ephrins (Eph family receptor interacting proteins), revealing a pivotal role for the conserved gH residue E52 and the amino-terminal peptide of gL. Using FSI-FRET and cell contraction assays, we further demonstrate that the gH/gL complex also functionally mimics ephrin ligand by inducing EphA2 receptor association via its dimerization interface, thus triggering receptor signaling for cytoskeleton remodeling. These results now provide novel insight into the entry mechanism of HHV-8, opening avenues for the search of therapeutic agents that could interfere with HHV-8–related diseases. Herpesviruses are known to hijack cellular receptors to enter cells, but this study shows that human herpesvirus 8 takes this to another level by using its envelope glycoprotein complex gH/gL to mimic the EphA2 receptor’s natural ligands, ephrins.
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Affiliation(s)
- Taylor P Light
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, Maryland, United States of America.,Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, Maryland, United States of America
| | - Delphine Brun
- Department of Virology, Structural Virology Unit, Institut Pasteur, Paris, France.,CNRS, UMR 3569, Paris, France
| | - Pablo Guardado-Calvo
- Department of Virology, Structural Virology Unit, Institut Pasteur, Paris, France.,CNRS, UMR 3569, Paris, France
| | - Riccardo Pederzoli
- Department of Virology, Structural Virology Unit, Institut Pasteur, Paris, France.,CNRS, UMR 3569, Paris, France
| | - Ahmed Haouz
- CNRS, UMR 3569, Paris, France.,Crystallography Platform C2RT, Institut Pasteur, Paris, France
| | - Frank Neipel
- Crystallography Platform C2RT, Institut Pasteur, Paris, France
| | - Félix A Rey
- Department of Virology, Structural Virology Unit, Institut Pasteur, Paris, France.,CNRS, UMR 3569, Paris, France
| | - Kalina Hristova
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, Maryland, United States of America.,Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, Maryland, United States of America
| | - Marija Backovic
- Department of Virology, Structural Virology Unit, Institut Pasteur, Paris, France.,CNRS, UMR 3569, Paris, France
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31
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Pérez-Cremades D, Paes AB, Vidal-Gómez X, Mompeón A, Hermenegildo C, Novella S. Regulatory Network Analysis in Estradiol-Treated Human Endothelial Cells. Int J Mol Sci 2021; 22:ijms22158193. [PMID: 34360960 PMCID: PMC8348965 DOI: 10.3390/ijms22158193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/16/2021] [Accepted: 07/26/2021] [Indexed: 11/24/2022] Open
Abstract
Background/Aims: Estrogen has been reported to have beneficial effects on vascular biology through direct actions on endothelium. Together with transcription factors, miRNAs are the major drivers of gene expression and signaling networks. The objective of this study was to identify a comprehensive regulatory network (miRNA–transcription factor–downstream genes) that controls the transcriptomic changes observed in endothelial cells exposed to estradiol. Methods: miRNA/mRNA interactions were assembled using our previous microarray data of human umbilical vein endothelial cells (HUVEC) treated with 17β-estradiol (E2) (1 nmol/L, 24 h). miRNA–mRNA pairings and their associated canonical pathways were determined using Ingenuity Pathway Analysis software. Transcription factors were identified among the miRNA-regulated genes. Transcription factor downstream target genes were predicted by consensus transcription factor binding sites in the promoter region of E2-regulated genes by using JASPAR and TRANSFAC tools in Enrichr software. Results: miRNA–target pairings were filtered by using differentially expressed miRNAs and mRNAs characterized by a regulatory relationship according to miRNA target prediction databases. The analysis identified 588 miRNA–target interactions between 102 miRNAs and 588 targets. Specifically, 63 upregulated miRNAs interacted with 295 downregulated targets, while 39 downregulated miRNAs were paired with 293 upregulated mRNA targets. Functional characterization of miRNA/mRNA association analysis highlighted hypoxia signaling, integrin, ephrin receptor signaling and regulation of actin-based motility by Rho among the canonical pathways regulated by E2 in HUVEC. Transcription factors and downstream genes analysis revealed eight networks, including those mediated by JUN and REPIN1, which are associated with cadherin binding and cell adhesion molecule binding pathways. Conclusion: This study identifies regulatory networks obtained by integrative microarray analysis and provides additional insights into the way estradiol could regulate endothelial function in human endothelial cells.
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Huang Y, Qian JY, Cheng H, Li XM. Effects of shear stress on differentiation of stem cells into endothelial cells. World J Stem Cells 2021; 13:894-913. [PMID: 34367483 PMCID: PMC8316872 DOI: 10.4252/wjsc.v13.i7.894] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 04/20/2021] [Accepted: 06/22/2021] [Indexed: 02/06/2023] Open
Abstract
Stem cell transplantation is an appealing potential therapy for vascular diseases and an indispensable key step in vascular tissue engineering. Substantial effort has been made to differentiate stem cells toward vascular cell phenotypes, including endothelial cells (ECs) and smooth muscle cells. The microenvironment of vascular cells not only contains biochemical factors that influence differentiation but also exerts hemodynamic forces, such as shear stress and cyclic strain. More recently, studies have shown that shear stress can influence the differentiation of stem cells toward ECs. A deep understanding of the responses and underlying mechanisms involved in this process is essential for clinical translation. This review highlights current data supporting the role of shear stress in stem cell differentiation into ECs. Potential mechanisms and signaling cascades for transducing shear stress into a biological signal are proposed. Further study of stem cell responses to shear stress will be necessary to apply stem cells for pharmacological applications and cardiovascular implants in the realm of regenerative medicine.
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Affiliation(s)
- Yan Huang
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China
| | - Jia-Yi Qian
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China
| | - Hong Cheng
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China
| | - Xiao-Ming Li
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China
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Yu Z, Li W, Lan J, Hayakawa K, Ji X, Lo EH, Wang X. EphrinB2-EphB2 signaling for dendrite protection after neuronal ischemia in vivo and oxygen-glucose deprivation in vitro. J Cereb Blood Flow Metab 2021; 41:1744-1755. [PMID: 33325764 PMCID: PMC8221775 DOI: 10.1177/0271678x20973119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
In order to rescue neuronal function, neuroprotection should be required not only for the neuron soma but also the dendrites. Here, we propose the hypothesis that ephrin-B2-EphB2 signaling may be involved in dendritic degeneration after ischemic injury. A mouse model of focal cerebral ischemia with middle cerebral artery occlusion (MCAO) method was used for EphB2 signaling test in vivo. Primary cortical neuron culture and oxygen-glucose deprivation were used to assess EphB2 signaling in vitro. siRNA and soluble ephrin-B2 ectodomain were used to block ephrin-B2-Ephb2 signaling. In the mouse model of focal cerebral ischemia and in neurons subjected to oxygen-glucose deprivation, clustering of ephrin-B2 with its receptor EphB2 was detected. Phosphorylation of EphB2 suggested activation of this signaling pathway. RNA silencing of EphB2 prevented neuronal death and preserved dendritic length. To assess therapeutic potential, we compared the soluble EphB2 ectodomain with the NMDA antagonist MK801 in neurons after oxygen-glucose deprivation. Both agents equally reduced lactate dehydrogenase release as a general marker of neurotoxicity. However, only soluble EphB2 ectodomain protected the dendrites. These findings provide a proof of concept that ephrin-B2-EphB2 signaling may represent a novel therapeutic target to protect both the neuron soma as well as dendrites against ischemic injury.
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Affiliation(s)
- Zhanyang Yu
- Neuroprotection Research Laboratory, Departments of Radiology and Neurology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - Wenlu Li
- Neuroprotection Research Laboratory, Departments of Radiology and Neurology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - Jing Lan
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Capital Medical University, Beijing, China.,Cerebrovascular Research Institute, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Kazuhide Hayakawa
- Neuroprotection Research Laboratory, Departments of Radiology and Neurology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - Xunming Ji
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Capital Medical University, Beijing, China.,Cerebrovascular Research Institute, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Eng H Lo
- Neuroprotection Research Laboratory, Departments of Radiology and Neurology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - Xiaoying Wang
- Neuroprotection Research Laboratory, Departments of Radiology and Neurology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA.,Clinical Neuroscience Research Center, Department of Neurosurgery, Tulane University School of Medicine, New Orleans, LA, USA
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Ng XW, Chung YH, Piston DW. Intercellular Communication in the Islet of Langerhans in Health and Disease. Compr Physiol 2021; 11:2191-2225. [PMID: 34190340 PMCID: PMC8985231 DOI: 10.1002/cphy.c200026] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Blood glucose homeostasis requires proper function of pancreatic islets, which secrete insulin, glucagon, and somatostatin from the β-, α-, and δ-cells, respectively. Each islet cell type is equipped with intrinsic mechanisms for glucose sensing and secretory actions, but these intrinsic mechanisms alone cannot explain the observed secretory profiles from intact islets. Regulation of secretion involves interconnected mechanisms among and between islet cell types. Islet cells lose their normal functional signatures and secretory behaviors upon dispersal as compared to intact islets and in vivo. In dispersed islet cells, the glucose response of insulin secretion is attenuated from that seen from whole islets, coordinated oscillations in membrane potential and intracellular Ca2+ activity, as well as the two-phase insulin secretion profile, are missing, and glucagon secretion displays higher basal secretion profile and a reverse glucose-dependent response from that of intact islets. These observations highlight the critical roles of intercellular communication within the pancreatic islet, and how these communication pathways are crucial for proper hormonal and nonhormonal secretion and glucose homeostasis. Further, misregulated secretions of islet secretory products that arise from defective intercellular islet communication are implicated in diabetes. Intercellular communication within the islet environment comprises multiple mechanisms, including electrical synapses from gap junctional coupling, paracrine interactions among neighboring cells, and direct cell-to-cell contacts in the form of juxtacrine signaling. In this article, we describe the various mechanisms that contribute to proper islet function for each islet cell type and how intercellular islet communications are coordinated among the same and different islet cell types. © 2021 American Physiological Society. Compr Physiol 11:2191-2225, 2021.
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Affiliation(s)
- Xue W Ng
- Department of Cell Biology and Physiology, Washington University, St Louis, Missouri, USA
| | - Yong H Chung
- Department of Cell Biology and Physiology, Washington University, St Louis, Missouri, USA
| | - David W Piston
- Department of Cell Biology and Physiology, Washington University, St Louis, Missouri, USA
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35
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Qiu Y, Fung L, Schilling TF, Nie Q. Multiple morphogens and rapid elongation promote segmental patterning during development. PLoS Comput Biol 2021; 17:e1009077. [PMID: 34161317 PMCID: PMC8259987 DOI: 10.1371/journal.pcbi.1009077] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 07/06/2021] [Accepted: 05/13/2021] [Indexed: 12/21/2022] Open
Abstract
The vertebrate hindbrain is segmented into rhombomeres (r) initially defined by distinct domains of gene expression. Previous studies have shown that noise-induced gene regulation and cell sorting are critical for the sharpening of rhombomere boundaries, which start out rough in the forming neural plate (NP) and sharpen over time. However, the mechanisms controlling simultaneous formation of multiple rhombomeres and accuracy in their sizes are unclear. We have developed a stochastic multiscale cell-based model that explicitly incorporates dynamic morphogenetic changes (i.e. convergent-extension of the NP), multiple morphogens, and gene regulatory networks to investigate the formation of rhombomeres and their corresponding boundaries in the zebrafish hindbrain. During pattern initiation, the short-range signal, fibroblast growth factor (FGF), works together with the longer-range morphogen, retinoic acid (RA), to specify all of these boundaries and maintain accurately sized segments with sharp boundaries. At later stages of patterning, we show a nonlinear change in the shape of rhombomeres with rapid left-right narrowing of the NP followed by slower dynamics. Rapid initial convergence improves boundary sharpness and segment size by regulating cell sorting and cell fate both independently and coordinately. Overall, multiple morphogens and tissue dynamics synergize to regulate the sizes and boundaries of multiple segments during development. In segmental pattern formation, chemical gradients control gene expression in a concentration-dependent manner to specify distinct gene expression domains. Despite the stochasticity inherent to such biological processes, precise and accurate borders form between segmental gene expression domains. Previous work has revealed synergy between gene regulation and cell sorting in sharpening borders that are initially rough. However, it is still poorly understood how size and boundary sharpness of multiple segments are regulated in a tissue that changes dramatically in its morphology as the embryo develops. Here we develop a stochastic multiscale cell-base model to investigate these questions. Two novel strategies synergize to promote accurate segment formation, a combination of long- and short-range morphogens plus rapid tissue convergence, with one responsible for pattern initiation and the other enabling pattern refinement.
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Affiliation(s)
- Yuchi Qiu
- Department of Mathematics, University of California, Irvine, California, United States of America
| | - Lianna Fung
- Department of Developmental and Cell Biology, University of California, Irvine, California, United States of America
- The NSF-Simons Center for Multiscale Cell Fate Research, University of California, Irvine, California, United States of America
| | - Thomas F. Schilling
- Department of Developmental and Cell Biology, University of California, Irvine, California, United States of America
- The NSF-Simons Center for Multiscale Cell Fate Research, University of California, Irvine, California, United States of America
- * E-mail: (TFS); (QN)
| | - Qing Nie
- Department of Mathematics, University of California, Irvine, California, United States of America
- Department of Developmental and Cell Biology, University of California, Irvine, California, United States of America
- The NSF-Simons Center for Multiscale Cell Fate Research, University of California, Irvine, California, United States of America
- * E-mail: (TFS); (QN)
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Vaught DB, Merkel AR, Lynch CC, Edwards J, Tantawy MN, Hilliard T, Wang S, Peterson T, Johnson RW, Sterling JA, Brantley‐Sieders D. EphA2 Is a Clinically Relevant Target for Breast Cancer Bone Metastatic Disease. JBMR Plus 2021; 5:e10465. [PMID: 33869989 PMCID: PMC8046157 DOI: 10.1002/jbm4.10465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 12/22/2020] [Accepted: 01/12/2021] [Indexed: 11/23/2022] Open
Abstract
EphA2 receptor tyrosine kinase (RTK) is highly expressed in breast tumor cells across multiple molecular subtypes and correlates with poor patient prognosis. In this study, the potential role of EphA2 in this clinically relevant phenomenon is investigated as metastasis of breast cancer to bone is a major cause of morbidity and mortality in patients. It was found that the EphA2 function in breast cancer cells promotes osteoclast activation and the development of osteolytic bone disease. Blocking EphA2 function molecularly and pharmacologically in breast tumors reduced the number and size of bone lesions and the degree of osteolytic disease in intratibial and intracardiac mouse models, which correlated with a significant decrease in the number of osteoclasts at the tumor-bone interface. EphA2 loss of function in tumor cells impaired osteoclast progenitor differentiation in coculture, which is mediated, at least in part, by reduced expression of IL-6. EPHA2 transcript levels are enriched in human breast cancer bone metastatic lesions relative to visceral metastatic sites; EphA2 protein expression was detected in breast tumor cells in bone metastases in patient samples, supporting the clinical relevance of the study's findings. These data provide a strong rationale for the development and application of molecularly targeted therapies against EphA2 for the treatment of breast cancer bone metastatic disease. © 2021 The Authors. JBMR Plus published by Wiley Periodicals LLC. on behalf of American Society for Bone and Mineral Research.
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Affiliation(s)
- David B Vaught
- Department of Cancer BiologyVanderbilt University School of MedicineNashvilleTNUSA
| | - Alyssa R Merkel
- Vanderbilt Center for Bone BiologyVanderbilt University School of MedicineNashvilleTNUSA
| | - Conor C Lynch
- Department of Tumor BiologyH. Lee Moffitt Cancer CenterTampaFLUSA
| | | | - Mohammed Noor Tantawy
- Radiology and Vanderbilt Institute of Imaging SciencesVanderbilt University School of MedicineNashvilleTNUSA
| | - Timothy Hilliard
- Radiology and Vanderbilt Institute of Imaging SciencesVanderbilt University School of MedicineNashvilleTNUSA
| | - Shan Wang
- Department of Medicine, Division of Rheumatology and ImmunologyVanderbilt University School of MedicineNashvilleTNUSA
| | - Todd Peterson
- Radiology and Vanderbilt Institute of Imaging SciencesVanderbilt University School of MedicineNashvilleTNUSA
| | - Rachelle W Johnson
- Vanderbilt Center for Bone BiologyVanderbilt University School of MedicineNashvilleTNUSA
- Vanderbilt‐Ingram Cancer CenterVanderbilt University School of MedicineNashvilleTNUSA
- Department of Tumor BiologyH. Lee Moffitt Cancer CenterTampaFLUSA
- Division of Clinical PharmacologyVanderbilt University School of MedicineNashvilleTNUSA
| | - Julie A Sterling
- Vanderbilt Center for Bone BiologyVanderbilt University School of MedicineNashvilleTNUSA
- Department of Veterans Affairs, Tennessee Valley Healthcare System (VISN 9)Vanderbilt UniversityNashvilleTNUSA
| | - Dana Brantley‐Sieders
- Vanderbilt‐Ingram Cancer CenterVanderbilt University School of MedicineNashvilleTNUSA
- Department of Tumor BiologyH. Lee Moffitt Cancer CenterTampaFLUSA
- Radiology and Vanderbilt Institute of Imaging SciencesVanderbilt University School of MedicineNashvilleTNUSA
- Department of Medicine, Division of Rheumatology and ImmunologyVanderbilt University School of MedicineNashvilleTNUSA
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von Zastrow M, Sorkin A. Mechanisms for Regulating and Organizing Receptor Signaling by Endocytosis. Annu Rev Biochem 2021; 90:709-737. [PMID: 33606955 DOI: 10.1146/annurev-biochem-081820-092427] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Intricate relationships between endocytosis and cellular signaling, first recognized nearly 40 years ago through the study of tyrosine kinase growth factor receptors, are now known to exist for multiple receptor classes and to affect myriad physiological and developmental processes. This review summarizes our present understanding of how endocytosis orchestrates cellular signaling networks, with an emphasis on mechanistic underpinnings and focusing on two receptor classes-tyrosine kinase and G protein-coupled receptors-that have been investigated in particular detail. Together, these examples provide a useful survey of the current consensus, uncertainties, and controversies in this rapidly advancing area of cell biology.
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Affiliation(s)
- Mark von Zastrow
- Department of Psychiatry, University of California, San Francisco, California 94143, USA;
| | - Alexander Sorkin
- Department of Cell Biology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15261, USA;
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38
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Nitzsche A, Poittevin M, Benarab A, Bonnin P, Faraco G, Uchida H, Favre J, Garcia-Bonilla L, Garcia MCL, Léger PL, Thérond P, Mathivet T, Autret G, Baudrie V, Couty L, Kono M, Chevallier A, Niazi H, Tharaux PL, Chun J, Schwab SR, Eichmann A, Tavitian B, Proia RL, Charriaut-Marlangue C, Sanchez T, Kubis N, Henrion D, Iadecola C, Hla T, Camerer E. Endothelial S1P 1 Signaling Counteracts Infarct Expansion in Ischemic Stroke. Circ Res 2021; 128:363-382. [PMID: 33301355 PMCID: PMC7874503 DOI: 10.1161/circresaha.120.316711] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
RATIONALE Cerebrovascular function is critical for brain health, and endogenous vascular protective pathways may provide therapeutic targets for neurological disorders. S1P (Sphingosine 1-phosphate) signaling coordinates vascular functions in other organs, and S1P1 (S1P receptor-1) modulators including fingolimod show promise for the treatment of ischemic and hemorrhagic stroke. However, S1P1 also coordinates lymphocyte trafficking, and lymphocytes are currently viewed as the principal therapeutic target for S1P1 modulation in stroke. OBJECTIVE To address roles and mechanisms of engagement of endothelial cell S1P1 in the naive and ischemic brain and its potential as a target for cerebrovascular therapy. METHODS AND RESULTS Using spatial modulation of S1P provision and signaling, we demonstrate a critical vascular protective role for endothelial S1P1 in the mouse brain. With an S1P1 signaling reporter, we reveal that abluminal polarization shields S1P1 from circulating endogenous and synthetic ligands after maturation of the blood-neural barrier, restricting homeostatic signaling to a subset of arteriolar endothelial cells. S1P1 signaling sustains hallmark endothelial functions in the naive brain and expands during ischemia by engagement of cell-autonomous S1P provision. Disrupting this pathway by endothelial cell-selective deficiency in S1P production, export, or the S1P1 receptor substantially exacerbates brain injury in permanent and transient models of ischemic stroke. By contrast, profound lymphopenia induced by loss of lymphocyte S1P1 provides modest protection only in the context of reperfusion. In the ischemic brain, endothelial cell S1P1 supports blood-brain barrier function, microvascular patency, and the rerouting of blood to hypoperfused brain tissue through collateral anastomoses. Boosting these functions by supplemental pharmacological engagement of the endothelial receptor pool with a blood-brain barrier penetrating S1P1-selective agonist can further reduce cortical infarct expansion in a therapeutically relevant time frame and independent of reperfusion. CONCLUSIONS This study provides genetic evidence to support a pivotal role for the endothelium in maintaining perfusion and microvascular patency in the ischemic penumbra that is coordinated by S1P signaling and can be harnessed for neuroprotection with blood-brain barrier-penetrating S1P1 agonists.
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MESH Headings
- Animals
- Blood-Brain Barrier/drug effects
- Blood-Brain Barrier/metabolism
- Blood-Brain Barrier/pathology
- Blood-Brain Barrier/physiopathology
- Cerebral Arteries/drug effects
- Cerebral Arteries/metabolism
- Cerebral Arteries/pathology
- Cerebral Arteries/physiopathology
- Cerebrovascular Circulation
- Disease Models, Animal
- Endothelial Cells/metabolism
- Endothelial Cells/pathology
- Female
- Infarction, Middle Cerebral Artery/metabolism
- Infarction, Middle Cerebral Artery/pathology
- Infarction, Middle Cerebral Artery/physiopathology
- Infarction, Middle Cerebral Artery/prevention & control
- Ischemic Attack, Transient/metabolism
- Ischemic Attack, Transient/pathology
- Ischemic Attack, Transient/physiopathology
- Ischemic Attack, Transient/prevention & control
- Ischemic Stroke/metabolism
- Ischemic Stroke/pathology
- Ischemic Stroke/physiopathology
- Ischemic Stroke/prevention & control
- Lysophospholipids/metabolism
- Male
- Mice, 129 Strain
- Mice, Inbred C57BL
- Mice, Knockout
- Microcirculation
- Neuroprotective Agents/pharmacology
- Signal Transduction
- Sphingosine/analogs & derivatives
- Sphingosine/metabolism
- Sphingosine-1-Phosphate Receptors/agonists
- Sphingosine-1-Phosphate Receptors/genetics
- Sphingosine-1-Phosphate Receptors/metabolism
- Vascular Patency
- Mice
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Affiliation(s)
- Anja Nitzsche
- Université de Paris, Paris Cardiovascular Research Centre, INSERM
| | - Marine Poittevin
- Université de Paris, Paris Cardiovascular Research Centre, INSERM
- Institut des Vaisseaux et du Sang, Hôpital Lariboisière
| | - Ammar Benarab
- Université de Paris, Paris Cardiovascular Research Centre, INSERM
| | - Philippe Bonnin
- Université de Paris, INSERM U965 and Physiologie Clinique - Explorations-Fonctionnelles, AP-HP, Hôpital Lariboisière
| | - Giuseppe Faraco
- Feil Family Brain and Mind Research Institute, Weill Cornell Medical College, Cornell University, New York
| | - Hiroki Uchida
- Center for Vascular Biology, Weill Cornell Medical College, Cornell University, New York
| | - Julie Favre
- MITOVASC Institute, CARFI Facility, CNRS UMR 6015, INSERM U1083, Angers University
| | - Lidia Garcia-Bonilla
- Feil Family Brain and Mind Research Institute, Weill Cornell Medical College, Cornell University, New York
| | - Manuela C. L. Garcia
- MITOVASC Institute, CARFI Facility, CNRS UMR 6015, INSERM U1083, Angers University
| | - Pierre-Louis Léger
- Institut des Vaisseaux et du Sang, Hôpital Lariboisière
- INSERM U1141, Hôpital Robert Debré
| | - Patrice Thérond
- Assistance Publique-Hôpitaux de Paris (AP-HP), Service de Biochimie, Hôpital de Bicêtre, Le Kremlin Bicêtre, France; Université Paris-Sud
- UFR de Pharmacie, EA 4529, Châtenay-Malabry, France
| | - Thomas Mathivet
- Université de Paris, Paris Cardiovascular Research Centre, INSERM
| | - Gwennhael Autret
- Université de Paris, Paris Cardiovascular Research Centre, INSERM
| | | | - Ludovic Couty
- Université de Paris, Paris Cardiovascular Research Centre, INSERM
| | - Mari Kono
- National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Institutes of Health, Bethesda, MD, USA
| | - Aline Chevallier
- Université de Paris, Paris Cardiovascular Research Centre, INSERM
| | - Hira Niazi
- Université de Paris, Paris Cardiovascular Research Centre, INSERM
| | | | - Jerold Chun
- Neuroscience Drug Discovery, Sanford Burnham Prebys Medical Discovery Institute, La Jolla
| | - Susan R. Schwab
- Skirball Institute of Biomolecular Medicine, New York University School of Medicine, New York
| | - Anne Eichmann
- Université de Paris, Paris Cardiovascular Research Centre, INSERM
| | | | - Richard L. Proia
- National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Institutes of Health, Bethesda, MD, USA
| | | | - Teresa Sanchez
- Center for Vascular Biology, Weill Cornell Medical College, Cornell University, New York
| | - Nathalie Kubis
- Université de Paris, INSERM U965 and Physiologie Clinique - Explorations-Fonctionnelles, AP-HP, Hôpital Lariboisière
- Université de Paris, INSERM U1148, Hôpital Bichat, Paris, France
| | - Daniel Henrion
- MITOVASC Institute, CARFI Facility, CNRS UMR 6015, INSERM U1083, Angers University
| | - Costantino Iadecola
- Feil Family Brain and Mind Research Institute, Weill Cornell Medical College, Cornell University, New York
| | - Timothy Hla
- Vascular Biology Program, Boston Children's Hospital
| | - Eric Camerer
- Université de Paris, Paris Cardiovascular Research Centre, INSERM
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Yoon J, Garo J, Lee M, Sun J, Hwang YS, Daar IO. Rab11fip5 regulates telencephalon development via ephrinB1 recycling. Development 2021; 148:dev196527. [PMID: 33462110 PMCID: PMC7875491 DOI: 10.1242/dev.196527] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 12/25/2020] [Indexed: 12/12/2022]
Abstract
Rab11 family-interacting protein 5 (Rab11fip5) is an adaptor protein that binds to the small GTPase Rab11, which has an important function in endosome recycling and trafficking of cellular proteins to the plasma membrane. Rab11fip5 is involved in many cellular processes, such as cytoskeleton rearrangement, iron uptake and exocytosis in neuroendocrine cells, and is also known as a candidate gene for autism-spectrum disorder. However, the role of Rab11fip5 during early embryonic development is not clearly understood. In this study, we identified Rab11fip5 as a protein that interacts with ephrinB1, a transmembrane ligand for Eph receptors. The PDZ binding motif in ephrinB1 and the Rab-binding domain in Rab11fip5 are necessary for their interaction in a complex. EphrinB1 and Rab11fip5 display overlapping expression in the telencephalon of developing amphibian embryos. The loss of Rab11fip5 function causes a reduction in telencephalon size and a decrease in the expression level of ephrinB1. Moreover, morpholino oligonucleotide-mediated knockdown of Rab11fip5 decreases cell proliferation in the telencephalon. The overexpression of ephrinB1 rescues these defects, suggesting that ephrinB1 recycling by the Rab11/Rab11fip5 complex is crucial for proper telencephalon development.
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Affiliation(s)
- Jaeho Yoon
- Cancer and Developmental Biology Laboratory (CDBL), Center for Cancer Research (CCR) - Frederick, National Cancer Institute, Frederick, MD 21702, USA
| | - Jerlin Garo
- Cancer and Developmental Biology Laboratory (CDBL), Center for Cancer Research (CCR) - Frederick, National Cancer Institute, Frederick, MD 21702, USA
| | - Moonsup Lee
- Cancer and Developmental Biology Laboratory (CDBL), Center for Cancer Research (CCR) - Frederick, National Cancer Institute, Frederick, MD 21702, USA
| | - Jian Sun
- Cancer and Developmental Biology Laboratory (CDBL), Center for Cancer Research (CCR) - Frederick, National Cancer Institute, Frederick, MD 21702, USA
| | - Yoo-Seok Hwang
- Cancer and Developmental Biology Laboratory (CDBL), Center for Cancer Research (CCR) - Frederick, National Cancer Institute, Frederick, MD 21702, USA
| | - Ira O Daar
- Cancer and Developmental Biology Laboratory (CDBL), Center for Cancer Research (CCR) - Frederick, National Cancer Institute, Frederick, MD 21702, USA
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40
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Zhu Y, Hryniuk A, Foley T, Hess B, Lohnes D. Cdx2 Regulates Intestinal EphrinB1 through the Notch Pathway. Genes (Basel) 2021; 12:genes12020188. [PMID: 33525395 PMCID: PMC7911442 DOI: 10.3390/genes12020188] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 01/23/2021] [Indexed: 01/07/2023] Open
Abstract
The majority of colorectal cancers harbor loss-of-function mutations in APC, a negative regulator of canonical Wnt signaling, leading to intestinal polyps that are predisposed to malignant progression. Comparable murine APC alleles also evoke intestinal polyps, which are typically confined to the small intestine and proximal colon, but do not progress to carcinoma in the absence of additional mutations. The Cdx transcription factors Cdx1 and Cdx2 are essential for homeostasis of the intestinal epithelium, and loss of Cdx2 has been associated with more aggressive subtypes of colorectal cancer in the human population. Consistent with this, concomitant loss of Cdx1 and Cdx2 in a murine APC mutant background leads to an increase in polyps throughout the intestinal tract. These polyps also exhibit a villous phenotype associated with the loss of EphrinB1. However, the basis for these outcomes is poorly understood. To further explore this, we modeled Cdx2 loss in SW480 colorectal cancer cells. We found that Cdx2 impacted Notch signaling in SW480 cells, and that EphrinB1 is a Notch target gene. As EphrinB1 loss also leads to a villus tumor phenotype, these findings evoke a mechanism by which Cdx2 impacts colorectal cancer via Notch-dependent EphrinB1 signaling.
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Affiliation(s)
- Yalun Zhu
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada; (Y.Z.); (A.H.); (T.F.); (B.H.)
| | - Alexa Hryniuk
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada; (Y.Z.); (A.H.); (T.F.); (B.H.)
- Department of Human Anatomy and Cell Science, Rady Faculty of Health Sciences, Max Rady College of Medicine, University of Manitoba, 745 Bannatyne Avenue, Winnipeg, MB R3E 0J9, Canada
| | - Tanya Foley
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada; (Y.Z.); (A.H.); (T.F.); (B.H.)
| | - Bradley Hess
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada; (Y.Z.); (A.H.); (T.F.); (B.H.)
| | - David Lohnes
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada; (Y.Z.); (A.H.); (T.F.); (B.H.)
- Correspondence: ; Tel.: +1-613-562-5800 (ext. 8684)
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Li T, Wang H, Liu R, Wang X, Huang L, Wu Z, Yin X, Zou S, Duan P. The role of EphB4/ephrinB2 signaling in root repair after orthodontically-induced root resorption. Am J Orthod Dentofacial Orthop 2021; 159:e217-e232. [PMID: 33487501 DOI: 10.1016/j.ajodo.2020.07.035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Revised: 07/01/2020] [Accepted: 07/01/2020] [Indexed: 12/28/2022]
Abstract
INTRODUCTION This study aimed to investigate the effect of EphB4/ephrinB2 signaling on orthodontically-induced root resorption repair and the possible molecular mechanism behind it. METHODS Seventy-two 6-week-old male Wistar rats were randomly divided into 3 groups: blank control group, physiological regeneration group (PHY), and EphB4 inhibitor local injection group (INH). A root repair model was built on experimental rats of the PHY and INH groups. The animals in the INH groups received a daily periodontal local injection of EphB4 inhibitor NVP-BHG712, whereas the blank control group and PHY groups received only the vehicle. RESULTS Histologic staining and microcomputed tomography analysis showed that root regeneration was inhibited in the INH group compared with the PHY group with a greater number of osteoclasts. Immunohistochemical staining showed active EphB4/ephrinB2 signaling activities during root regeneration. The cementogenesis-related factors cementum attachment protein, alkaline phosphatase, osteopontin, and runt-related transcription factor 2, and osteoclastic-related factors RANKL and osteoprotegerin were affected by regulated EphB4/ephrinB2 signaling. CONCLUSIONS These findings demonstrated that the EphB4/ephrinB2 signaling might be a promising therapeutic target for novel therapeutic approaches to reduce orthodontically-induced root resorption through enhancement of cementogenesis.
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Affiliation(s)
- Tiancheng Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China School and Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Han Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China School and Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Ruojing Liu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China School and Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xin Wang
- Oral Diagnosis and Treatment Center, Aviation General Hospital, China Medical University, Beijing, China
| | - Li Huang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China School and Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Zuping Wu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China School and Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xing Yin
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China School and Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Shujuan Zou
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China School and Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Peipei Duan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China School and Hospital of Stomatology, Sichuan University, Chengdu, China.
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Kim A, Seong KM, Choi YY, Shim S, Park S, Lee SS. Inhibition of EphA2 by Dasatinib Suppresses Radiation-Induced Intestinal Injury. Int J Mol Sci 2020; 21:ijms21239096. [PMID: 33265912 PMCID: PMC7730170 DOI: 10.3390/ijms21239096] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 11/24/2020] [Accepted: 11/25/2020] [Indexed: 12/16/2022] Open
Abstract
Radiation-induced multiorgan dysfunction is thought to result primarily from damage to the endothelial system, leading to a systemic inflammatory response that is mediated by the recruitment of leukocytes. The Eph–ephrin signaling pathway in the vascular system participates in various disease developmental processes, including cancer and inflammation. In this study, we demonstrate that radiation exposure increased intestinal inflammation via endothelial dysfunction, caused by the radiation-induced activation of EphA2, an Eph receptor tyrosine kinase, and its ligand ephrinA1. Barrier dysfunction in endothelial and epithelial cells was aggravated by vascular endothelial–cadherin disruption and leukocyte adhesion in radiation-induced inflammation both in vitro and in vivo. Among all Eph receptors and their ligands, EphA2 and ephrinA1 were required for barrier destabilization and leukocyte adhesion. Knockdown of EphA2 in endothelial cells reduced radiation-induced endothelial dysfunction. Furthermore, pharmacological inhibition of EphA2–ephrinA1 by the tyrosine kinase inhibitor dasatinib attenuated the loss of vascular integrity and leukocyte adhesion in vitro. Mice administered dasatinib exhibited resistance to radiation injury characterized by reduced barrier leakage and decreased leukocyte infiltration into the intestine. Taken together, these data suggest that dasatinib therapy represents a potential approach for the protection of radiation-mediated intestinal damage by targeting the EphA2–ephrinA1 complex.
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Affiliation(s)
- Areumnuri Kim
- Laboratory of Radiation Exposure and Therapeutics, National Radiation Emergency Medical Center, KIRAMS, Seoul 01812, Korea; (S.S.); (S.P.); (S.S.L.)
- Correspondence:
| | - Ki Moon Seong
- Laboratory of Biodosimetry, National Radiation Emergency Medical Center, KIRAMS, Seoul 01812, Korea; (K.M.S.); (Y.Y.C.)
| | - You Yeon Choi
- Laboratory of Biodosimetry, National Radiation Emergency Medical Center, KIRAMS, Seoul 01812, Korea; (K.M.S.); (Y.Y.C.)
| | - Sehwan Shim
- Laboratory of Radiation Exposure and Therapeutics, National Radiation Emergency Medical Center, KIRAMS, Seoul 01812, Korea; (S.S.); (S.P.); (S.S.L.)
| | - Sunhoo Park
- Laboratory of Radiation Exposure and Therapeutics, National Radiation Emergency Medical Center, KIRAMS, Seoul 01812, Korea; (S.S.); (S.P.); (S.S.L.)
- Laboratory of Biodosimetry, National Radiation Emergency Medical Center, KIRAMS, Seoul 01812, Korea; (K.M.S.); (Y.Y.C.)
| | - Seung Sook Lee
- Laboratory of Radiation Exposure and Therapeutics, National Radiation Emergency Medical Center, KIRAMS, Seoul 01812, Korea; (S.S.); (S.P.); (S.S.L.)
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Creeden JF, Alganem K, Imami AS, Henkel ND, Brunicardi FC, Liu SH, Shukla R, Tomar T, Naji F, McCullumsmith RE. Emerging Kinase Therapeutic Targets in Pancreatic Ductal Adenocarcinoma and Pancreatic Cancer Desmoplasia. Int J Mol Sci 2020; 21:ijms21228823. [PMID: 33233470 PMCID: PMC7700673 DOI: 10.3390/ijms21228823] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/16/2020] [Accepted: 11/19/2020] [Indexed: 02/08/2023] Open
Abstract
Kinase drug discovery represents an active area of therapeutic research, with previous pharmaceutical success improving patient outcomes across a wide variety of human diseases. In pancreatic ductal adenocarcinoma (PDAC), innovative pharmaceutical strategies such as kinase targeting have been unable to appreciably increase patient survival. This may be due, in part, to unchecked desmoplastic reactions to pancreatic tumors. Desmoplastic stroma enhances tumor development and progression while simultaneously restricting drug delivery to the tumor cells it protects. Emerging evidence indicates that many of the pathologic fibrotic processes directly or indirectly supporting desmoplasia may be driven by targetable protein tyrosine kinases such as Fyn-related kinase (FRK); B lymphoid kinase (BLK); hemopoietic cell kinase (HCK); ABL proto-oncogene 2 kinase (ABL2); discoidin domain receptor 1 kinase (DDR1); Lck/Yes-related novel kinase (LYN); ephrin receptor A8 kinase (EPHA8); FYN proto-oncogene kinase (FYN); lymphocyte cell-specific kinase (LCK); tec protein kinase (TEC). Herein, we review literature related to these kinases and posit signaling networks, mechanisms, and biochemical relationships by which this group may contribute to PDAC tumor growth and desmoplasia.
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Affiliation(s)
- Justin F. Creeden
- Department of Neurosciences, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43614, USA; (K.A.); (A.S.I.); (N.D.H.); (R.S.); (R.E.M.)
- Department of Cancer Biology, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43614, USA; (F.C.B.); (S.-H.L.)
- Department of Surgery, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 6038, USA
- Correspondence: ; Tel.: +1-419-383-6474
| | - Khaled Alganem
- Department of Neurosciences, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43614, USA; (K.A.); (A.S.I.); (N.D.H.); (R.S.); (R.E.M.)
| | - Ali S. Imami
- Department of Neurosciences, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43614, USA; (K.A.); (A.S.I.); (N.D.H.); (R.S.); (R.E.M.)
| | - Nicholas D. Henkel
- Department of Neurosciences, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43614, USA; (K.A.); (A.S.I.); (N.D.H.); (R.S.); (R.E.M.)
| | - F. Charles Brunicardi
- Department of Cancer Biology, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43614, USA; (F.C.B.); (S.-H.L.)
- Department of Surgery, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 6038, USA
| | - Shi-He Liu
- Department of Cancer Biology, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43614, USA; (F.C.B.); (S.-H.L.)
- Department of Surgery, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 6038, USA
| | - Rammohan Shukla
- Department of Neurosciences, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43614, USA; (K.A.); (A.S.I.); (N.D.H.); (R.S.); (R.E.M.)
| | - Tushar Tomar
- PamGene International BV, 5200 BJ’s-Hertogenbosch, The Netherlands; (T.T.); (F.N.)
| | - Faris Naji
- PamGene International BV, 5200 BJ’s-Hertogenbosch, The Netherlands; (T.T.); (F.N.)
| | - Robert E. McCullumsmith
- Department of Neurosciences, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43614, USA; (K.A.); (A.S.I.); (N.D.H.); (R.S.); (R.E.M.)
- Neurosciences Institute, ProMedica, Toledo, OH 6038, USA
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Esteban-Villarrubia J, Soto-Castillo JJ, Pozas J, San Román-Gil M, Orejana-Martín I, Torres-Jiménez J, Carrato A, Alonso-Gordoa T, Molina-Cerrillo J. Tyrosine Kinase Receptors in Oncology. Int J Mol Sci 2020; 21:E8529. [PMID: 33198314 PMCID: PMC7696731 DOI: 10.3390/ijms21228529] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 11/07/2020] [Accepted: 11/09/2020] [Indexed: 02/07/2023] Open
Abstract
Tyrosine kinase receptors (TKR) comprise more than 60 molecules that play an essential role in the molecular pathways, leading to cell survival and differentiation. Consequently, genetic alterations of TKRs may lead to tumorigenesis and, therefore, cancer development. The discovery and improvement of tyrosine kinase inhibitors (TKI) against TKRs have entailed an important step in the knowledge-expansion of tumor physiopathology as well as an improvement in the cancer treatment based on molecular alterations over many tumor types. The purpose of this review is to provide a comprehensive review of the different families of TKRs and their role in the expansion of tumor cells and how TKIs can stop these pathways to tumorigenesis, in combination or not with other therapies. The increasing growth of this landscape is driving us to strengthen the development of precision oncology with clinical trials based on molecular-based therapy over a histology-based one, with promising preliminary results.
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Affiliation(s)
- Jorge Esteban-Villarrubia
- Medical Oncology Department, University Hospital Ramon y Cajal, 28034 Madrid, Spain; (J.E.-V.); (J.J.S.-C.); (J.P.); (M.S.R.-G.); (I.O.-M.); (J.T.-J.)
| | - Juan José Soto-Castillo
- Medical Oncology Department, University Hospital Ramon y Cajal, 28034 Madrid, Spain; (J.E.-V.); (J.J.S.-C.); (J.P.); (M.S.R.-G.); (I.O.-M.); (J.T.-J.)
| | - Javier Pozas
- Medical Oncology Department, University Hospital Ramon y Cajal, 28034 Madrid, Spain; (J.E.-V.); (J.J.S.-C.); (J.P.); (M.S.R.-G.); (I.O.-M.); (J.T.-J.)
| | - María San Román-Gil
- Medical Oncology Department, University Hospital Ramon y Cajal, 28034 Madrid, Spain; (J.E.-V.); (J.J.S.-C.); (J.P.); (M.S.R.-G.); (I.O.-M.); (J.T.-J.)
| | - Inmaculada Orejana-Martín
- Medical Oncology Department, University Hospital Ramon y Cajal, 28034 Madrid, Spain; (J.E.-V.); (J.J.S.-C.); (J.P.); (M.S.R.-G.); (I.O.-M.); (J.T.-J.)
| | - Javier Torres-Jiménez
- Medical Oncology Department, University Hospital Ramon y Cajal, 28034 Madrid, Spain; (J.E.-V.); (J.J.S.-C.); (J.P.); (M.S.R.-G.); (I.O.-M.); (J.T.-J.)
| | - Alfredo Carrato
- Medical Oncology Department, Ramón y Cajal Health Research Institute (IRYCIS), CIBERONC, Alcalá University, University Hospital Ramon y Cajal, 28034 Madrid, Spain; (A.C.); (J.M.-C.)
| | - Teresa Alonso-Gordoa
- Medical Oncology Department, Ramón y Cajal Health Research Institute (IRYCIS), CIBERONC, Alcalá University, University Hospital Ramon y Cajal, 28034 Madrid, Spain; (A.C.); (J.M.-C.)
| | - Javier Molina-Cerrillo
- Medical Oncology Department, Ramón y Cajal Health Research Institute (IRYCIS), CIBERONC, Alcalá University, University Hospital Ramon y Cajal, 28034 Madrid, Spain; (A.C.); (J.M.-C.)
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Arcas A, Wilkinson DG, Nieto MÁ. The Evolutionary History of Ephs and Ephrins: Toward Multicellular Organisms. Mol Biol Evol 2020; 37:379-394. [PMID: 31589243 PMCID: PMC6993872 DOI: 10.1093/molbev/msz222] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Eph receptor (Eph) and ephrin signaling regulate fundamental developmental processes through both forward and reverse signaling triggered upon cell–cell contact. In vertebrates, they are both classified into classes A and B, and some representatives have been identified in many metazoan groups, where their expression and functions have been well studied. We have extended previous phylogenetic analyses and examined the presence of Eph and ephrins in the tree of life to determine their origin and evolution. We have found that 1) premetazoan choanoflagellates may already have rudimental Eph/ephrin signaling as they have an Eph-/ephrin-like pair and homologs of downstream-signaling genes; 2) both forward- and reverse-downstream signaling might already occur in Porifera since sponges have most genes involved in these types of signaling; 3) the nonvertebrate metazoan Eph is a type-B receptor that can bind ephrins regardless of their membrane-anchoring structure, glycosylphosphatidylinositol, or transmembrane; 4) Eph/ephrin cross-class binding is specific to Gnathostomata; and 5) kinase-dead Eph receptors can be traced back to Gnathostomata. We conclude that Eph/ephrin signaling is of older origin than previously believed. We also examined the presence of protein domains associated with functional characteristics and the appearance and conservation of downstream-signaling pathways to understand the original and derived functions of Ephs and ephrins. We find that the evolutionary history of these gene families points to an ancestral function in cell–cell interactions that could contribute to the emergence of multicellularity and, in particular, to the required segregation of cell populations.
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Affiliation(s)
- Aida Arcas
- Instituto de Neurociencias (CSIC-UMH), Avda, San Juan de Alicante, Spain
| | - David G Wilkinson
- Neural Development Laboratory, The Francis Crick Institute, London, United Kingdom
| | - M Ángela Nieto
- Instituto de Neurociencias (CSIC-UMH), Avda, San Juan de Alicante, Spain
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Broggini T, Piffko A, Hoffmann CJ, Ghori A, Harms C, Adams RH, Vajkoczy P, Czabanka M. Ephrin-B2-EphB4 communication mediates tumor-endothelial cell interactions during hematogenous spread to spinal bone in a melanoma metastasis model. Oncogene 2020; 39:7063-7075. [PMID: 32989254 DOI: 10.1038/s41388-020-01473-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 08/21/2020] [Accepted: 09/15/2020] [Indexed: 11/09/2022]
Abstract
Metastases account for the majority of cancer deaths. Bone represents one of the most common sites of distant metastases, and spinal bone metastasis is the most common source of neurological morbidity in cancer patients. During metastatic seeding of cancer cells, endothelial-tumor cell interactions govern extravasation to the bone and potentially represent one of the first points of action for antimetastatic treatment. The ephrin-B2-EphB4 pathway controls cellular interactions by inducing repulsive or adhesive properties, depending on forward or reverse signaling. Here, we report that in an in vivo metastatic melanoma model, ephrin-B2-mediated activation of EphB4 induces tumor cell repulsion from bone endothelium, translating in reduced spinal bone metastatic loci and improved neurological function. Selective ephrin-B2 depletion in endothelial cells or EphB4 inhibition increases bone metastasis and shortens the time window to hind-limb locomotion deficit from spinal cord compression. EphB4 overexpression in melanoma cells ameliorates the metastatic phenotype and improves neurological outcome. Timely harvesting of bone tissue after tumor cell injection and intravital bone microscopy revealed less tumor cells attached to ephrin-B2-positive endothelial cells. These results suggest that ephrin-B2-EphB4 communication influences bone metastasis formation by altering melanoma cell repulsion/adhesion to bone endothelial cells, and represents a molecular target for therapeutic intervention.
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Affiliation(s)
- Thomas Broggini
- Department of Neurosurgery, Universitätsmedizin Charite, D-10117, Berlin, Germany.,Department of Physics, University of California at San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA
| | - Andras Piffko
- Department of Neurosurgery, Universitätsmedizin Charite, D-10117, Berlin, Germany.,Department of Neurosurgery, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Germany
| | - Christian J Hoffmann
- Department of Experimental Neurology, Center for Stroke Research Berlin, Universitätsmedizin Charite, D-10117, Berlin, Germany
| | - Adnan Ghori
- Department of Neurosurgery, Universitätsmedizin Charite, D-10117, Berlin, Germany
| | - Christoph Harms
- Department of Experimental Neurology, Center for Stroke Research Berlin, Universitätsmedizin Charite, D-10117, Berlin, Germany
| | - Ralf H Adams
- Max-Planck-Institute for Molecular Biomedicine, Department of Tissue Morphogenesis, and University of Münster, Faculty of Medicine, D-48149, Münster, Germany
| | - Peter Vajkoczy
- Department of Neurosurgery, Universitätsmedizin Charite, D-10117, Berlin, Germany
| | - Marcus Czabanka
- Department of Neurosurgery, Universitätsmedizin Charite, D-10117, Berlin, Germany.
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Adu-Gyamfi EA, Czika A, Liu TH, Gorleku PN, Fondjo LA, Djankpa FT, Ding YB, Wang YX. Ephrin and Eph receptor signaling in female reproductive physiology and pathology†. Biol Reprod 2020; 104:71-82. [PMID: 32940657 DOI: 10.1093/biolre/ioaa171] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 08/19/2020] [Accepted: 09/13/2020] [Indexed: 12/12/2022] Open
Abstract
Ephrins are ligands of Eph receptors (Ephs); both of which are sorted into two classes, A and B. There are five types of ephrin-As (ephrin-A1-5) and three types of ephrin-Bs (ephrin-B1-3). Also, there are 10 types of EphAs (EphA1-10) and six types of EphBs (EphB1-6). Binding of ephrins to the Eph receptors activates signaling cascades that regulate several biological processes such as cellular proliferation, differentiation, migration, angiogenesis, and vascular remodeling. Clarification of their roles in the female reproductive system is crucial to understanding the physiology and pathology of this system. Such knowledge will also create awareness regarding the importance of these molecules in diagnostic, prognostic, and therapeutic medicine. Hence, we have discussed the involvement of these molecules in the physiological and pathological events that occur within the female reproductive system. The evidence so far suggests that the ephrins and the Eph receptors modulate folliculogenesis, ovulation, embryo transport, implantation, and placentation. Abnormal expression of some of these molecules is associated with polycystic ovarian syndrome, ovarian cancer, tubal pregnancy, endometrial cancer, uterine leiomyoma (fibroids), cervical cancer, and preeclampsia, suggesting the need to utilize these molecules in the clinical setting. To enhance a quick development of this gradually emerging field in female reproductive medicine, we have highlighted some "gaps in knowledge" that need prospective investigation.
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Affiliation(s)
- Enoch Appiah Adu-Gyamfi
- Department of Reproductive Sciences, School of Basic Medicine, Chongqing Medical University, Chongqing, People's Republic of China.,Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, People's Republic of China
| | - Armin Czika
- Department of Reproductive Sciences, School of Basic Medicine, Chongqing Medical University, Chongqing, People's Republic of China.,Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, People's Republic of China
| | - Tai-Hang Liu
- Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, People's Republic of China
| | - Philip Narteh Gorleku
- Department of Medical Imaging, School of Medical Sciences, University of Cape Coast, Cape Coast, Republic of Ghana
| | - Linda Ahenkorah Fondjo
- Department of Molecular Medicine, School of Medicine and Dentistry, Kwame Nkrumah University of Science and Technology, Kumasi, Republic of Ghana
| | - Francis Tanam Djankpa
- Department of Physiology, School of Medical Sciences, University of Cape Coast, Cape Coast, Republic of Ghana
| | - Yu-Bin Ding
- Department of Reproductive Sciences, School of Basic Medicine, Chongqing Medical University, Chongqing, People's Republic of China.,Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, People's Republic of China
| | - Ying-Xiong Wang
- Department of Reproductive Sciences, School of Basic Medicine, Chongqing Medical University, Chongqing, People's Republic of China.,Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, People's Republic of China
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Herrera-Espejo S, Santos-Zorrozua B, Alvarez-Gonzalez P, Martin-Guerrero I, M de Pancorbo M, Garcia-Orad A, Lopez-Lopez E. A Genome-Wide Study of Single-Nucleotide Polymorphisms in MicroRNAs and Further In Silico Analysis Reveals Their Putative Role in Susceptibility to Late-Onset Alzheimer's Disease. Mol Neurobiol 2020; 58:55-64. [PMID: 32892277 DOI: 10.1007/s12035-020-02103-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 08/27/2020] [Indexed: 02/07/2023]
Abstract
Late-onset Alzheimer's disease (LOAD) is a neurodegenerative disorder of growing relevance in an aging society for which predictive biomarkers are needed. Many genes involved in LOAD are tightly controlled by microRNAs (miRNAs), which can be modulated by single-nucleotide polymorphisms (SNPs). Our aim was to determine the association between SNPs in miRNAs and LOAD. We selected all SNPs in pre-miRNAs with a minor allele frequency (MAF) > 1% and genotyped them in a cohort of 229 individuals diagnosed with LOAD and 237 unrelated healthy controls. In silico analyses were performed to predict the effect of SNPs on miRNA stability and detect downstream pathways. Four SNPs were associated with LOAD risk with a p value < 0.01 (rs74704964 in hsa-miR-518d, rs71363366 in hsa-miR-1283-2, rs11983381 in hsa-miR-4653, and rs10934682 in hsa-miR-544b). In silico analyses support a possible functional effect of those SNPs in miRNA levels and in the regulation of pathways of relevance for the development of LOAD. Although the results are promising, additional studies are needed to validate the association between SNPs in miRNAs and the risk of developing LOAD. Graphical abstract.
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Affiliation(s)
- Soraya Herrera-Espejo
- Department of Genetics, Physical Anthropology and Animal Physiology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Borja Santos-Zorrozua
- Department of Genetics, Physical Anthropology and Animal Physiology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Paula Alvarez-Gonzalez
- Department of Genetics, Physical Anthropology and Animal Physiology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Idoia Martin-Guerrero
- Department of Genetics, Physical Anthropology and Animal Physiology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Leioa, Spain.,BioCruces Bizkaia Health Research Institute, Barakaldo, Spain
| | - Marian M de Pancorbo
- BIOMICs Research Group, Centro de Investigación "Lascaray" Ikergunea, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Africa Garcia-Orad
- Department of Genetics, Physical Anthropology and Animal Physiology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Leioa, Spain.,BioCruces Bizkaia Health Research Institute, Barakaldo, Spain
| | - Elixabet Lopez-Lopez
- Department of Genetics, Physical Anthropology and Animal Physiology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Leioa, Spain. .,BioCruces Bizkaia Health Research Institute, Barakaldo, Spain.
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London M, Gallo E. Critical role of EphA3 in cancer and current state of EphA3 drug therapeutics. Mol Biol Rep 2020; 47:5523-5533. [PMID: 32621117 DOI: 10.1007/s11033-020-05571-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Accepted: 06/05/2020] [Indexed: 12/14/2022]
Abstract
The erythropoietin-producing human hepatocellular (Eph) receptors are transmembrane glycoprotein members of the tyrosine kinase receptors family. The Ephs may bind to various ephrin ligands resulting in the phosphorylation of their tyrosine kinase domain and the activation of the Eph receptor. In this review we focus on EphA3, one receptor of the 14 different Ephs, as it carries out both redundant and restricted functions in the germline development of mammals and in the maintenance of various adult tissues. The loss of EphA3 regulation is correlated with various human malignancies, the most notable being cancer. This receptor is overexpressed and/or mutated in multiple tumors, and is also associated with poor prognosis and decreased survival in patients. Here we highlight the role of EphA3 in normal and malignant tissues that are specific to cancer; these include hematologic disorders, gastric cancer, glioblastoma multiforme, colorectal cancer, lung cancer, renal cell carcinoma, and prostate cancer. Moreover, various anticancer agents against EphA3 have been developed to either inhibit its kinase domain activity or to function as agonists. Thus, we examine the most potent small molecule drugs and mAb-based therapeutics against EphA3 that are currently in pre-clinical or clinical stages.
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Affiliation(s)
- Max London
- Department of Molecular Genetics, Donnelly Centre, University of Toronto, 160 College Street, Toronto, ON, M5S 3E1, Canada
| | - Eugenio Gallo
- Department of Molecular Genetics, Donnelly Centre, University of Toronto, 160 College Street, Toronto, ON, M5S 3E1, Canada.
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50
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Coucha M, Barrett AC, Bailey J, Abdelghani M, Abdelsaid M. Increased Ephrin-B2 expression in pericytes contributes to retinal vascular death in rodents. Vascul Pharmacol 2020; 131:106761. [PMID: 32585189 DOI: 10.1016/j.vph.2020.106761] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 06/03/2020] [Accepted: 06/04/2020] [Indexed: 12/29/2022]
Abstract
AIMS Diabetes-induced retinal vascular cell death aggravates diabetic retinopathy (DR) to the proliferative stage and blindness. Pericytes play a crucial role in retinal capillaries survival, stability, and angiogenesis. Ephrin-B2 is a tyrosine kinase that regulates pericytes/endothelial cells communication during angiogenesis; yet, its role in DR is still unclear. We hypothesize that diabetes increases Ephrin-B2 signaling in pericytes, which contributes to inflammation and retinal vascular cell death. METHODS Selective inhibition of the Ephrin-B2 expression in the retinal pericytes was achieved using an intraocular injection of adeno-associated virus (AAV) with a specific pericyte promotor. Vascular death was determined by retinal trypsin digest. Pathological angiogenesis was assessed using the oxygen-induced retinopathy model in pericyte-Ephrin-B2 knockout mice, wild type, and wild type injected with AAV. Angiogenic properties, inflammatory, and apoptotic markers were measured in human retinal pericytes (HRP) grown under diabetic conditions. KEY FINDING Diabetes significantly increased the expression of Ephrin-B2, inflammatory, and apoptotic markers in the diabetic retinas and HRP. These effects were prevented by silencing Ephrin-B2 in HRP. Moreover, Ephrin-B2 silencing in retinal pericytes decreased pathological angiogenesis and acellular capillaries formation in diabetic retinas. SIGNIFICANCE Increased Ephrin-B2 expression in the pericytes contributed to diabetes-induced retinal inflammation and vascular death. These results identify pericytes-Ephrin-B2 as a therapeutic target for DR.
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Affiliation(s)
- Maha Coucha
- Department of Pharmaceutical Sciences, School of Pharmacy, South University, Savannah, GA, USA
| | - Amy C Barrett
- Department of Biomedical Sciences, School of Medicine, Mercer University, Savannah, GA, USA
| | - Joseph Bailey
- Department of Biomedical Sciences, School of Medicine, Mercer University, Savannah, GA, USA
| | - Maryam Abdelghani
- Department of Biomedical Sciences, School of Medicine, Mercer University, Savannah, GA, USA
| | - Mohammed Abdelsaid
- Department of Biomedical Sciences, School of Medicine, Mercer University, Savannah, GA, USA.
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