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Gu J, Zheng MQ, Holden D, Fowles K, Qiu L, Felchner Z, Zhang L, Ropchan J, Gropler RJ, Carson RE, Tu Z, Huang Y, Hillmer AT. PET Imaging of Sphingosine-1-Phosphate Receptor 1 with [18F]TZ4877 in Nonhuman Primates. RESEARCH SQUARE 2024:rs.3.rs-4350862. [PMID: 38854065 PMCID: PMC11160920 DOI: 10.21203/rs.3.rs-4350862/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
Purpose The sphingosine-1-phosphate receptor-1 (S1PR1) is involved in regulating responses to neuroimmune stimuli. There is a need for S1PR1-specific radioligands with clinically suitable brain pharmcokinetic properties to complement existing radiotracers. This work evaluated a promising S1PR1 radiotracer, [18F]TZ4877, in nonhuman primates. Procedures [18F]TZ4877 was produced via nucleophilic substitution of tosylate precursor with K[18F]/F- followed by deprotection. Brain PET imaging data were acquired with a Focus220 scanner in two Macaca mulatta (6, 13 years old) for 120-180 min following bolus injection of 118-163 MBq [18F]TZ4877, with arterial blood sampling and metabolite analysis to measure the parent input function and plasma free fraction (f P). Each animal was scanned at baseline, 15-18 min after 0.047-0.063 mg/kg of the S1PR1 inhibitor ponesimod, 33 min after 0.4-0.8 mg/kg of the S1PR1-specific compound TZ82112, and 167-195 min after 1 ng/kg of the immune stimulus endotoxin. Kinetic analysis with metabolite-corrected input function was performed to estimate the free fraction corrected total distribution volume (V T/f P). Whole-body dosimetry scans were acquired in 2 animals (1M, 1F) with a Biograph Vision PET/CT System, and absorbed radiation dose estimates were calculated with OLINDA. Results [18F]TZ4877 exhibited fast kinetics that were described by the reversible 2-tissue compartment model. Baseline [18F]TZ4877 f P was low (< 1%), and [18F]TZ4877 V T/f P values were 233-866 mL/cm3. TZ82112 dose-dependently reduced [18F]TZ4877 V T/f P, while ponesimod and endotoxin exhibited negligible effects on V T/f P, possibly due to scan timing relative to dosing. Dosimetry studies identified the critical organs of gallbladder (0.42 (M) and 0.31 (F) mSv/MBq) for anesthetized nonhuman primate. Conclusions [18F]TZ4877 exhibits reversible kinetic properties, but the low f P value limits quantification with this radiotracer. S1PR1 is a compelling PET imaging target, and these data support pursuing alternative F-18 labeled radiotracers for potential future human studies.
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Affiliation(s)
| | | | | | | | - Lin Qiu
- Washington University School of Medicine in Saint Louis: Washington University in St Louis School of Medicine
| | | | | | | | - Robert J Gropler
- Washington University School of Medicine in Saint Louis: Washington University in St Louis School of Medicine
| | | | - Zhude Tu
- Washington University School of Medicine in Saint Louis: Washington University in St Louis School of Medicine
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2
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Hallisey VM, Schwab SR. Get me out of here: Sphingosine 1-phosphate signaling and T cell exit from tissues during an immune response. Immunol Rev 2023; 317:8-19. [PMID: 37212181 DOI: 10.1111/imr.13219] [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: 05/02/2023] [Accepted: 05/03/2023] [Indexed: 05/23/2023]
Abstract
During an immune response, the duration of T cell residence in lymphoid and non-lymphoid tissues likely affects T cell activation, differentiation, and memory development. The factors that govern T cell transit through inflamed tissues remain incompletely understood, but one important determinant of T cell exit from tissues is sphingosine 1-phosphate (S1P) signaling. In homeostasis, S1P levels are high in blood and lymph compared to lymphoid organs, and lymphocytes follow S1P gradients out of tissues into circulation using varying combinations of five G-protein coupled S1P receptors. During an immune response, both the shape of S1P gradients and the expression of S1P receptors are dynamically regulated. Here we review what is known, and key questions that remain unanswered, about how S1P signaling is regulated in inflammation and in turn how S1P shapes immune responses.
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Affiliation(s)
- Victoria M Hallisey
- Department of Cell Biology, New York University Grossman School of Medicine, New York, New York, USA
| | - Susan R Schwab
- Department of Cell Biology, New York University Grossman School of Medicine, New York, New York, USA
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3
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Bishop D, Schwarz Q, Wiszniak S. Endothelial-derived angiocrine factors as instructors of embryonic development. Front Cell Dev Biol 2023; 11:1172114. [PMID: 37457293 PMCID: PMC10339107 DOI: 10.3389/fcell.2023.1172114] [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: 02/23/2023] [Accepted: 06/19/2023] [Indexed: 07/18/2023] Open
Abstract
Blood vessels are well-known to play roles in organ development and repair, primarily owing to their fundamental function in delivering oxygen and nutrients to tissues to promote their growth and homeostasis. Endothelial cells however are not merely passive conduits for carrying blood. There is now evidence that endothelial cells of the vasculature actively regulate tissue-specific development, morphogenesis and organ function, as well as playing roles in disease and cancer. Angiocrine factors are growth factors, cytokines, signaling molecules or other regulators produced directly from endothelial cells to instruct a diverse range of signaling outcomes in the cellular microenvironment, and are critical mediators of the vascular control of organ function. The roles of angiocrine signaling are only beginning to be uncovered in diverse fields such as homeostasis, regeneration, organogenesis, stem-cell maintenance, cell differentiation and tumour growth. While in some cases the specific angiocrine factor involved in these processes has been identified, in many cases the molecular identity of the angiocrine factor(s) remain to be discovered, even though the importance of angiocrine signaling has been implicated. In this review, we will specifically focus on roles for endothelial-derived angiocrine signaling in instructing tissue morphogenesis and organogenesis during embryonic and perinatal development.
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Hashemi E, Yoseph E, Tsai HC, Moreno M, Yeh LH, Mehta SB, Kono M, Proia R, Han MH. Visualizing Sphingosine-1-Phosphate Receptor 1(S1P 1) Signaling During Central Nervous System De- and Remyelination. Cell Mol Neurobiol 2023; 43:1219-1236. [PMID: 35917044 PMCID: PMC10444542 DOI: 10.1007/s10571-022-01245-0] [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: 09/06/2021] [Accepted: 06/14/2022] [Indexed: 11/24/2022]
Abstract
Multiple sclerosis (MS) is an inflammatory-demyelinating disease of the central nervous system (CNS) mediated by aberrant auto-reactive immune responses. The current immune-modulatory therapies are unable to protect and repair immune-mediated neural tissue damage. One of the therapeutic targets in MS is the sphingosine-1-phosphate (S1P) pathway which signals via sphingosine-1-phosphate receptors 1-5 (S1P1-5). S1P receptors are expressed predominantly on immune and CNS cells. Considering the potential neuroprotective properties of S1P signaling, we utilized S1P1-GFP (Green fluorescent protein) reporter mice in the cuprizone-induced demyelination model to investigate in vivo S1P - S1P1 signaling in the CNS. We observed S1P1 signaling in a subset of neural stem cells in the subventricular zone (SVZ) during demyelination. During remyelination, S1P1 signaling is expressed in oligodendrocyte progenitor cells in the SVZ and mature oligodendrocytes in the medial corpus callosum (MCC). In the cuprizone model, we did not observe S1P1 signaling in neurons and astrocytes. We also observed β-arrestin-dependent S1P1 signaling in lymphocytes during demyelination and CNS inflammation. Our findings reveal β-arrestin-dependent S1P1 signaling in oligodendrocyte lineage cells implying a role of S1P1 signaling in remyelination.
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Affiliation(s)
- Ezzat Hashemi
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, 1201 Welch Rd, MSLS BLG P212, Stanford, CA, 94305, USA
| | - Ezra Yoseph
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, 1201 Welch Rd, MSLS BLG P212, Stanford, CA, 94305, USA
| | - Hsing-Chuan Tsai
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, 1201 Welch Rd, MSLS BLG P212, Stanford, CA, 94305, USA
| | - Monica Moreno
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, 1201 Welch Rd, MSLS BLG P212, Stanford, CA, 94305, USA
| | - Li-Hao Yeh
- Chan Zuckerberg Biohub, San Francisco, CA, USA
| | | | - Mari Kono
- Genetics and Biochemistry Branch, National Institute of Diabetes and Digestive and Kidney Diseases, NIH, Bethesda, MD, USA
| | - Richard Proia
- Genetics and Biochemistry Branch, National Institute of Diabetes and Digestive and Kidney Diseases, NIH, Bethesda, MD, USA
| | - May H Han
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, 1201 Welch Rd, MSLS BLG P212, Stanford, CA, 94305, USA.
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5
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Zhang H, Liesveld JL, Calvi LM, Lipe BC, Xing L, Becker MW, Schwarz EM, Yeh SCA. The roles of bone remodeling in normal hematopoiesis and age-related hematological malignancies. Bone Res 2023; 11:15. [PMID: 36918531 PMCID: PMC10014945 DOI: 10.1038/s41413-023-00249-w] [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: 08/01/2022] [Revised: 12/24/2022] [Accepted: 01/26/2023] [Indexed: 03/16/2023] Open
Abstract
Prior research establishing that bone interacts in coordination with the bone marrow microenvironment (BMME) to regulate hematopoietic homeostasis was largely based on analyses of individual bone-associated cell populations. Recent advances in intravital imaging has suggested that the expansion of hematopoietic stem cells (HSCs) and acute myeloid leukemia cells is restricted to bone marrow microdomains during a distinct stage of bone remodeling. These findings indicate that dynamic bone remodeling likely imposes additional heterogeneity within the BMME to yield differential clonal responses. A holistic understanding of the role of bone remodeling in regulating the stem cell niche and how these interactions are altered in age-related hematological malignancies will be critical to the development of novel interventions. To advance this understanding, herein, we provide a synopsis of the cellular and molecular constituents that participate in bone turnover and their known connections to the hematopoietic compartment. Specifically, we elaborate on the coupling between bone remodeling and the BMME in homeostasis and age-related hematological malignancies and after treatment with bone-targeting approaches. We then discuss unresolved questions and ambiguities that remain in the field.
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Affiliation(s)
- Hengwei Zhang
- Center for Musculoskeletal Research, University of Rochester Medical Center, 601 Elmwood Ave, Box 665, Rochester, NY, 14642, USA.
- Department of Pathology and Laboratory Medicine, University of Rochester Medical Center, Rochester, NY, USA.
| | - Jane L Liesveld
- Wilmot Cancer Center, University of Rochester Medical Center, Rochester, NY, USA
- Department of Medicine, Division of Hematology/Oncology and Bone Marrow Transplantation Program, University of Rochester Medical Center, Rochester, NY, USA
| | - Laura M Calvi
- Wilmot Cancer Center, University of Rochester Medical Center, Rochester, NY, USA
- Department of Medicine, Division of Endocrinology/Metabolism, University of Rochester Medical Center, Rochester, NY, USA
| | - Brea C Lipe
- Wilmot Cancer Center, University of Rochester Medical Center, Rochester, NY, USA
- Department of Medicine, Division of Hematology/Oncology and Bone Marrow Transplantation Program, University of Rochester Medical Center, Rochester, NY, USA
| | - Lianping Xing
- Center for Musculoskeletal Research, University of Rochester Medical Center, 601 Elmwood Ave, Box 665, Rochester, NY, 14642, USA
- Department of Pathology and Laboratory Medicine, University of Rochester Medical Center, Rochester, NY, USA
| | - Michael W Becker
- Wilmot Cancer Center, University of Rochester Medical Center, Rochester, NY, USA
- Department of Medicine, Division of Hematology/Oncology and Bone Marrow Transplantation Program, University of Rochester Medical Center, Rochester, NY, USA
| | - Edward M Schwarz
- Center for Musculoskeletal Research, University of Rochester Medical Center, 601 Elmwood Ave, Box 665, Rochester, NY, 14642, USA
- Department of Pathology and Laboratory Medicine, University of Rochester Medical Center, Rochester, NY, USA
- Department of Orthopaedics, University of Rochester Medical Center, Rochester, NY, USA
- Department of Medicine, Division of Allergy/Immunology/Rheumatology, University of Rochester Medical Center, Rochester, NY, USA
- Department of Biomedical Engineering, University of Rochester, Rochester, NY, USA
| | - Shu-Chi A Yeh
- Center for Musculoskeletal Research, University of Rochester Medical Center, 601 Elmwood Ave, Box 665, Rochester, NY, 14642, USA.
- Department of Orthopaedics, University of Rochester Medical Center, Rochester, NY, USA.
- Department of Biomedical Engineering, University of Rochester, Rochester, NY, USA.
- Department of Physiology/Pharmacology, University of Rochester Medical Center, Rochester, NY, USA.
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6
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van Echten-Deckert G. The role of sphingosine 1-phosphate metabolism in brain health and disease. Pharmacol Ther 2023; 244:108381. [PMID: 36907249 DOI: 10.1016/j.pharmthera.2023.108381] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 03/02/2023] [Accepted: 03/06/2023] [Indexed: 03/13/2023]
Abstract
Lipids are essential structural and functional components of the central nervous system (CNS). Sphingolipids are ubiquitous membrane components which were discovered in the brain in the late 19th century. In mammals, the brain contains the highest concentration of sphingolipids in the body. Sphingosine 1-phosphate (S1P) derived from membrane sphingolipids evokes multiple cellular responses which, depending on its concentration and localization, make S1P a double-edged sword in the brain. In the present review we highlight the role of S1P in brain development and focus on the often contrasting findings regarding its contributions to the initiation, progression and potential recovery of different brain pathologies, including neurodegeneration, multiple sclerosis (MS), brain cancers, and psychiatric illnesses. A detailed understanding of the critical implications of S1P in brain health and disease may open the door for new therapeutic options. Thus, targeting S1P-metabolizing enzymes and/or signaling pathways might help overcome, or at least ameliorate, several brain illnesses.
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D'Amato G, Phansalkar R, Naftaly JA, Fan X, Amir ZA, Rios Coronado PE, Cowley DO, Quinn KE, Sharma B, Caron KM, Vigilante A, Red-Horse K. Endocardium-to-coronary artery differentiation during heart development and regeneration involves sequential roles of Bmp2 and Cxcl12/Cxcr4. Dev Cell 2022; 57:2517-2532.e6. [PMID: 36347256 PMCID: PMC9833645 DOI: 10.1016/j.devcel.2022.10.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 07/28/2022] [Accepted: 10/18/2022] [Indexed: 11/09/2022]
Abstract
Endocardial cells lining the heart lumen are coronary vessel progenitors during embryogenesis. Re-igniting this developmental process in adults could regenerate blood vessels lost during cardiac injury, but this requires additional knowledge of molecular mechanisms. Here, we use mouse genetics and scRNA-seq to identify regulators of endocardial angiogenesis and precisely assess the role of CXCL12/CXCR4 signaling. Time-specific lineage tracing demonstrated that endocardial cells differentiated into coronary endothelial cells primarily at mid-gestation. A new mouse line reporting CXCR4 activity-along with cell-specific gene deletions-demonstrated it was specifically required for artery morphogenesis rather than angiogenesis. Integrating scRNA-seq data of endocardial-derived coronary vessels from mid- and late-gestation identified a Bmp2-expressing transitioning population specific to mid-gestation. Bmp2 stimulated endocardial angiogenesis in vitro and in injured neonatal mouse hearts. Our data demonstrate how understanding the molecular mechanisms underlying endocardial angiogenesis can identify new potential therapeutic targets promoting revascularization of the injured heart.
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Affiliation(s)
- Gaetano D'Amato
- Department of Biology, Stanford University, Stanford, CA, USA
| | - Ragini Phansalkar
- Department of Biology, Stanford University, Stanford, CA, USA; Department of Genetics, Stanford University School of Medicine, Stanford, CA, USA
| | | | - Xiaochen Fan
- Department of Biology, Stanford University, Stanford, CA, USA
| | - Zhainib A Amir
- Department of Biology, Stanford University, Stanford, CA, USA
| | | | - Dale O Cowley
- Animal Models Core, University of North Carolina, Chapel Hill, NC, USA
| | - Kelsey E Quinn
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Bikram Sharma
- Department of Biology, Ball State University, Muncie, IN, USA
| | - Kathleen M Caron
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Alessandra Vigilante
- Centre for Stem Cells and Regenerative Medicine & Institute for Liver Studies, King's College London, London, UK
| | - 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.
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8
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Xu L, Lu P, Wang Y. Sphingosine 1-phosphate receptor modulators for the treatment of inflammatory bowel disease and other immune-mediated diseases. Med Chem Res 2022. [DOI: 10.1007/s00044-022-02961-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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9
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Yazbeck P, Cullere X, Bennett P, Yajnik V, Wang H, Kawada K, Davis V, Parikh A, Kuo A, Mysore V, Hla T, Milstone D, Mayadas TN. DOCK4 Regulation of Rho GTPases Mediates Pulmonary Vascular Barrier Function. Arterioscler Thromb Vasc Biol 2022; 42:886-902. [PMID: 35477279 PMCID: PMC9233130 DOI: 10.1161/atvbaha.122.317565] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 04/12/2022] [Indexed: 01/10/2023]
Abstract
BACKGROUND The vascular endothelium maintains tissue-fluid homeostasis by controlling the passage of large molecules and fluid between the blood and interstitial space. The interaction of catenins and the actin cytoskeleton with VE-cadherin (vascular endothelial cadherin) is the primary mechanism for stabilizing AJs (adherens junctions), thereby preventing lung vascular barrier disruption. Members of the Rho (Ras homology) family of GTPases and conventional GEFs (guanine exchange factors) of these GTPases have been demonstrated to play important roles in regulating endothelial permeability. Here, we evaluated the role of DOCK4 (dedicator of cytokinesis 4)-an unconventional Rho family GTPase GEF in vascular function. METHODS We generated mice deficient in DOCK4' used DOCK4 silencing and reconstitution approaches in human pulmonary artery endothelial cells' used assays to evaluate protein localization, endothelial cell permeability, and small GTPase activation. RESULTS Our data show that DOCK4-deficient mice are viable. However, these mice have hemorrhage selectively in the lung, incomplete smooth muscle cell coverage in pulmonary vessels, increased basal microvascular permeability, and impaired response to S1P (sphingosine-1-phosphate)-induced reversal of thrombin-induced permeability. Consistent with this, DOCK4 rapidly translocates to the cell periphery and associates with the detergent-insoluble fraction following S1P treatment, and its absence prevents S1P-induced Rac-1 activation and enhancement of barrier function. Moreover, DOCK4-silenced pulmonary artery endothelial cells exhibit enhanced basal permeability in vitro that is associated with enhanced Rho GTPase activation. CONCLUSIONS Our findings indicate that DOCK4 maintains AJs necessary for lung vascular barrier function by establishing the normal balance between RhoA (Ras homolog family member A) and Rac-1-mediated actin cytoskeleton remodeling, a previously unappreciated function for the atypical GEF family of molecules. Our studies also identify S1P as a potential upstream regulator of DOCK4 activity.
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Affiliation(s)
- Pascal Yazbeck
- Department of Pathology, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA 02115
| | - Xavier Cullere
- Department of Pathology, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA 02115
| | - Paul Bennett
- Department of Pathology, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA 02115
| | - Vijay Yajnik
- Department of Medicine, Massachusetts General Hospital, 55 Fruit Street, Boston, MA 02445
| | - Huan Wang
- Department of Pathology, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA 02115
| | - Kenji Kawada
- Department of Medicine, Massachusetts General Hospital, 55 Fruit Street, Boston, MA 02445
| | - Vanessa Davis
- Department of Pathology, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA 02115
| | - Asit Parikh
- Department of Medicine, Massachusetts General Hospital, 55 Fruit Street, Boston, MA 02445
| | - Andrew Kuo
- Vascular Biology Program, Boston Children’s Hospital and Harvard Medical School, Boston, MA 20115
| | - Vijayashree Mysore
- Department of Pathology, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA 02115
| | - Timothy Hla
- Vascular Biology Program, Boston Children’s Hospital and Harvard Medical School, Boston, MA 20115
| | - David Milstone
- Department of Pathology, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA 02115
| | - Tanya N. Mayadas
- Department of Pathology, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA 02115
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10
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Abstract
Lysophospholipids, exemplified by lysophosphatidic acid (LPA) and sphingosine 1-phosphate (S1P), are produced by the metabolism and perturbation of biological membranes. Both molecules are established extracellular lipid mediators that signal via specific G protein-coupled receptors in vertebrates. This widespread signaling axis regulates the development, physiological functions, and pathological processes of all organ systems. Indeed, recent research into LPA and S1P has revealed their important roles in cellular stress signaling, inflammation, resolution, and host defense responses. In this review, we focus on how LPA regulates fibrosis, neuropathic pain, abnormal angiogenesis, endometriosis, and disorders of neuroectodermal development such as hydrocephalus and alopecia. In addition, we discuss how S1P controls collective behavior, apoptotic cell clearance, and immunosurveillance of cancers. Advances in lysophospholipid research have led to new therapeutics in autoimmune diseases, with many more in earlier stages of development for a wide variety of diseases, such as fibrotic disorders, vascular diseases, and cancer.
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Affiliation(s)
- Kuniyuki Kano
- Department of Health Chemistry, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113-0033, Japan; , .,AMED-LEAP, Japan Agency for Medical Research and Development, Tokyo 100-0004, Japan
| | - Junken Aoki
- Department of Health Chemistry, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113-0033, Japan; , .,AMED-LEAP, Japan Agency for Medical Research and Development, Tokyo 100-0004, Japan
| | - Timothy Hla
- Vascular Biology Program, Boston Children's Hospital, Boston, Massachusetts 02115, USA; .,Department of Surgery, Harvard Medical School, Boston, Massachusetts 02115, USA
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11
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Alegre-Cebollada J. Protein nanomechanics in biological context. Biophys Rev 2021; 13:435-454. [PMID: 34466164 PMCID: PMC8355295 DOI: 10.1007/s12551-021-00822-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 07/05/2021] [Indexed: 12/20/2022] Open
Abstract
How proteins respond to pulling forces, or protein nanomechanics, is a key contributor to the form and function of biological systems. Indeed, the conventional view that proteins are able to diffuse in solution does not apply to the many polypeptides that are anchored to rigid supramolecular structures. These tethered proteins typically have important mechanical roles that enable cells to generate, sense, and transduce mechanical forces. To fully comprehend the interplay between mechanical forces and biology, we must understand how protein nanomechanics emerge in living matter. This endeavor is definitely challenging and only recently has it started to appear tractable. Here, I introduce the main in vitro single-molecule biophysics methods that have been instrumental to investigate protein nanomechanics over the last 2 decades. Then, I present the contemporary view on how mechanical force shapes the free energy of tethered proteins, as well as the effect of biological factors such as post-translational modifications and mutations. To illustrate the contribution of protein nanomechanics to biological function, I review current knowledge on the mechanobiology of selected muscle and cell adhesion proteins including titin, talin, and bacterial pilins. Finally, I discuss emerging methods to modulate protein nanomechanics in living matter, for instance by inducing specific mechanical loss-of-function (mLOF). By interrogating biological systems in a causative manner, these new tools can contribute to further place protein nanomechanics in a biological context.
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Akhter MZ, Chandra Joshi J, Balaji Ragunathrao VA, Maienschein-Cline M, Proia RL, Malik AB, Mehta D. Programming to S1PR1 + Endothelial Cells Promotes Restoration of Vascular Integrity. Circ Res 2021; 129:221-236. [PMID: 33926208 PMCID: PMC8273089 DOI: 10.1161/circresaha.120.318412] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Md Zahid Akhter
- Pharmacology and Regenerative Medicine and Center for Lung and Vascular Biology, University of Illinois College of Medicine, Chicago (M.Z.A., J.C.J., V.A.B.R., A.B.M., D.M.)
| | - Jagdish Chandra Joshi
- Pharmacology and Regenerative Medicine and Center for Lung and Vascular Biology, University of Illinois College of Medicine, Chicago (M.Z.A., J.C.J., V.A.B.R., A.B.M., D.M.)
| | - Vijay Avin Balaji Ragunathrao
- Pharmacology and Regenerative Medicine and Center for Lung and Vascular Biology, University of Illinois College of Medicine, Chicago (M.Z.A., J.C.J., V.A.B.R., A.B.M., D.M.)
| | | | - Richard L Proia
- Genetics of Development and Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, NIH, Bethesda, MD (R.L.P.)
| | - Asrar B Malik
- Pharmacology and Regenerative Medicine and Center for Lung and Vascular Biology, University of Illinois College of Medicine, Chicago (M.Z.A., J.C.J., V.A.B.R., A.B.M., D.M.)
| | - Dolly Mehta
- Pharmacology and Regenerative Medicine and Center for Lung and Vascular Biology, University of Illinois College of Medicine, Chicago (M.Z.A., J.C.J., V.A.B.R., A.B.M., D.M.)
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Monocyte-derived S1P in the lymph node regulates immune responses. Nature 2021; 592:290-295. [PMID: 33658712 PMCID: PMC8475585 DOI: 10.1038/s41586-021-03227-6] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Accepted: 01/11/2021] [Indexed: 12/31/2022]
Abstract
The lipid chemoattractant sphingosine 1-phosphate (S1P) guides cells from the low-S1P environment of tissues into the high-S1P environment of circulatory fluids(1). Notably, S1P directs T cell exit from lymph nodes (LN), where T cells are initially activated, into lymph, from which T cells reach blood and ultimately inflamed tissues(1). T cells follow S1P gradients primarily using S1P receptor 1 (S1PR1)(1). While recent work has described how S1P gradients are established at steady-state, little is known about S1P distribution in disease, or about how changing S1P levels may affect immune responses. Here, we find that S1P concentrations increase in LN during an immune response. Hematopoietic cells, including inflammatory monocytes (iMo), are an important source of this S1P, an unexpected finding as endothelial cells provide lymph S1P(1). iMo require the early activation marker CD69 to supply this S1P, in part because CD69 expression is associated with reduced levels of S1pr5. CD69 acts as a “stand-your-ground” signal, keeping immune cells at a site of inflammation by regulating both S1P receptors and S1P gradients. Finally, increased S1P prolongs T cell residence time in LN, and exacerbates the severity of experimental autoimmune encephalomyelitis. This finding suggests the hypothesis that LN residence time regulates T cell differentiation, and points to novel uses of drugs targeting S1P signaling.
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Iwama T, Kano K, Saigusa D, Ekroos K, van Echten-Deckert G, Vogt J, Aoki J. Development of an On-Tissue Derivatization Method for MALDI Mass Spectrometry Imaging of Bioactive Lipids Containing Phosphate Monoester Using Phos-tag. Anal Chem 2021; 93:3867-3875. [PMID: 33577289 DOI: 10.1021/acs.analchem.0c04479] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Matrix-assisted laser desorption ionization-mass spectrometry imaging (MALDI-MSI) is an emerging label-free method for mapping the distribution of diverse molecular species in tissue sections. Despite recent progress in MALDI-MSI analyses of lipids, it is still difficult to visualize minor bioactive lipids including lysophosphatidic acid (LPA) and sphingosine-1-phosphate (S1P). Here, we have developed a novel on-tissue derivatization method using Phos-tag, a zinc complex that specifically binds to a phosphate monoester group. MALDI-MSI with Phos-tag derivatization made it possible to image LPA and S1P in the murine brain. Furthermore, we were able to visualize other low-abundance lipids containing phosphate monoester, such as phosphatidic acid and ceramide-1-phosphate. Compared with conventional MALDI-MS, this derivatization produced LPA images with high spatial accuracy discriminating LPA artificially produced during MALDI-MS analysis. In mice with deficiencies in enzymes that degrade LPA and S1P, we observed marked S1P and/or LPA accumulation in specific regions of the brain. Thus, the present study provides a simple and optimal way to reveal the spatial localization of potent bioactive lipid phosphates such as LPA and S1P in tissues.
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Affiliation(s)
- Taiga Iwama
- Department of Health Chemistry, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113-8654, Japan.,Laboratory of Molecular and Cellular Biochemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai980-8577, Japan
| | - Kuniyuki Kano
- Department of Health Chemistry, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113-8654, Japan.,Laboratory of Molecular and Cellular Biochemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai980-8577, Japan.,AMED-LEAP, Tokyo100-0004, Japan
| | - Daisuke Saigusa
- AMED-LEAP, Tokyo100-0004, Japan.,Department of Integrative Genomics, Tohoku Medical Megabank Organization, Tohoku University, Sendai980-8577, Japan.,Medical Biochemistry, Tohoku University School of Medicine, Sendai 980-8575, Japan
| | - Kim Ekroos
- Lipidomics Consulting Ltd., 02230 Espoo, Finland
| | | | - Johannes Vogt
- Department of Molecular and Translational Neurosciences, University Medical Hospital, University of Cologne, 50923 Cologne, Germany
| | - Junken Aoki
- Department of Health Chemistry, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113-8654, Japan.,Laboratory of Molecular and Cellular Biochemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai980-8577, Japan.,AMED-LEAP, Tokyo100-0004, Japan
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15
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Spampinato SF, Merlo S, Sano Y, Kanda T, Sortino MA. Protective effect of the sphingosine-1 phosphate receptor agonist siponimod on disrupted blood brain barrier function. Biochem Pharmacol 2021; 186:114465. [PMID: 33577891 DOI: 10.1016/j.bcp.2021.114465] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 02/04/2021] [Accepted: 02/04/2021] [Indexed: 02/07/2023]
Abstract
Sphingosine 1 phosphate (S1P) is a bioactive sphingolipid that exerts several functions in physiological and pathological conditions. The modulation of one of its receptors, S1P1, plays an important role in the egress of lymphocytes from lymph nodes and is a useful target in multiple sclerosis (MS) treatment. A new drug, siponimod (BAF-312) has been recently approved for the treatment of secondary progressive MS and has affinity for two S1P receptors, S1P1 and S1P5. The two receptors are expressed by endothelial cells that, as components of the blood-brain barrier (BBB), prevent the access of solutes and lymphocytes into the central nervous system, function often compromised in MS. Using an in vitro BBB model exposed to inflammatory cytokines (TNFα and IFNγ, 5 UI and 10 UI respectively), we evaluated the effects of BAF-312 (100 nM) on expression and function of endothelial tight junctional proteins (Zo-1 and claudin-5), regulation of transendothelial electrical resistance (TEER) and permeability to FITC-conjugated dextran. Zo-1 expression, as well as TEER values, were promptly recovered (24 h) when both S1P1 and S1P5 were activated by BAF-312. In contrast, at this time point, activation of S1P5 with the selective agonist UC-42-WP04 (300 nM) or with BAF-312, under blockade of S1P1 with the selective antagonist NIBR-0213 (1 μM), resulted in recovery of expression and localization of claudin-5 and reduction of TNFα/INFγ-induced expression of metalloproteinase 9. Only after a prolonged BAF-312 exposure (48 h), S1P1 was involved through activation of the PI3K/Akt pathway. The PI3K inhibitor LY294002 (10 µM) prevented in fact the effects of BAF-312 on all the parameters examined. In conclusion, BAF-312, by modulating both S1P1 and S1P5, may strengthen BBB properties, thus providing additional effects in the treatment of MS.
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Affiliation(s)
| | - Sara Merlo
- Department of Biomedical and Biotechnological Sciences, Section of Pharmacology, Catania, Italy
| | - Yasuteru Sano
- Department of Neurology and Clinical Neuroscience, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - Takashi Kanda
- Department of Neurology and Clinical Neuroscience, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - Maria Angela Sortino
- Department of Biomedical and Biotechnological Sciences, Section of Pharmacology, Catania, Italy.
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16
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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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17
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Thuy AV, Jeya Paul J, Weigel C, Ziegler AC, Guntinas-Lichius O, Gräler MH. Validation of a monoclonal antibody directed against the human sphingosine 1-phosphate receptor type 1. J Immunol Methods 2020; 490:112953. [PMID: 33359172 DOI: 10.1016/j.jim.2020.112953] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 12/08/2020] [Accepted: 12/17/2020] [Indexed: 11/30/2022]
Abstract
The sphingosine 1-phosphate receptor type 1 (S1PR1) has several important functions, including stabilizing endothelial barrier and maintaining lymphocyte circulation. These functions are critically dependent on the regulation of S1PR1 cell surface expression. Currently available antibodies against human S1PR1 are not able to pick up cell surface expression on living cells by flow cytometry due to intracellular epitopes or unspecific binding. Here we describe the generation of a mouse monoclonal antibody specific for the N-terminal region of human S1PR1. It has an immunoglobulin M (IgM) kappa isotype and detects cell surface expression of recombinant human S1PR1 on overexpressing cells. Due to unspecific intracellular cell staining, it cannot be used for staining of dead cells and tissue slides or in microscopic analyses. It is also not suitable for Western blot analysis and immunoprecipitation. However, the antibody can stain for endogenous S1PR1 on human endothelial cell lines and primary human umbilical vein endothelial cells (HUVEC). Incubation of these cells with various S1PR1 agonists revealed potent S1PR1 internalization, which was not the case with the specific antagonist W146. Surprisingly, human T and B cells isolated from blood and palatine tonsils did not show specific staining, demonstrating significantly lower endogenous S1PR1 surface expression on lymphocytes than on endothelial cells.
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Affiliation(s)
- Andreas V Thuy
- Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital, 07740 Jena, Germany; Center for Molecular Biomedicine, Jena University Hospital, 07745 Jena, Germany; Center for Sepsis Control and Care, Jena University Hospital, 07740 Jena, Germany
| | - Jefri Jeya Paul
- Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital, 07740 Jena, Germany; Center for Molecular Biomedicine, Jena University Hospital, 07745 Jena, Germany; Center for Sepsis Control and Care, Jena University Hospital, 07740 Jena, Germany
| | - Cynthia Weigel
- Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital, 07740 Jena, Germany; Center for Molecular Biomedicine, Jena University Hospital, 07745 Jena, Germany
| | - Anke C Ziegler
- Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital, 07740 Jena, Germany; Center for Molecular Biomedicine, Jena University Hospital, 07745 Jena, Germany
| | | | - Markus H Gräler
- Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital, 07740 Jena, Germany; Center for Molecular Biomedicine, Jena University Hospital, 07745 Jena, Germany; Center for Sepsis Control and Care, Jena University Hospital, 07740 Jena, Germany.
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18
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Balaji Ragunathrao VA, Anwar M, Akhter MZ, Chavez A, Mao DY, Natarajan V, Lakshmikanthan S, Chrzanowska-Wodnicka M, Dudek AZ, Claesson-Welsh L, Kitajewski JK, Wary KK, Malik AB, Mehta D. Sphingosine-1-Phosphate Receptor 1 Activity Promotes Tumor Growth by Amplifying VEGF-VEGFR2 Angiogenic Signaling. Cell Rep 2020; 29:3472-3487.e4. [PMID: 31825830 PMCID: PMC6927555 DOI: 10.1016/j.celrep.2019.11.036] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 09/06/2019] [Accepted: 11/07/2019] [Indexed: 12/24/2022] Open
Abstract
The vascular endothelial growth factor-A (VEGF-A)-VEGFR2 pathway drives tumor vascularization by activating proangiogenic signaling in endothelial cells (ECs). Here, we show that EC-sphingosine-1-phosphate receptor 1 (S1PR1) amplifies VEGFR2-mediated angiogenic signaling to enhance tumor growth. We show that cancer cells induce S1PR1 activity in ECs, and thereby, conditional deletion of S1PR1 in ECs (EC-S1pr1−/− mice) impairs tumor vascularization and growth. Mechanistically, we show that S1PR1 engages the heterotrimeric G-protein Gi, which amplifies VEGF-VEGFR2 signaling due to an increase in the activity of the tyrosine kinase c-Abl1. c-Abl1, by phosphorylating VEGFR2 at tyrosine-951, prolongs VEGFR2 retention on the plasmalemma to sustain Rac1 activity and EC migration. Thus, S1PR1 or VEGFR2 antagonists, alone or in combination, reverse the tumor growth in control mice to the level seen in EC-S1pr1−/− mice. Our findings suggest that blocking S1PR1 activity in ECs has the potential to suppress tumor growth by preventing amplification of VEGF-VEGFR2 signaling. Vijay Avin et al. demonstrate an essential role of endothelial cell (EC)-S1PR1 signaling in amplifying VEGFR2-mediated tumor growth. S1PR1 by Gi and c-Abl1 phosphorylates VEGFR2 at Y951, which retains VEGFR2 at EC plasmalemma, thus enabling EC migration, tumor angiogenesis, and growth.
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Affiliation(s)
- Vijay Avin Balaji Ragunathrao
- Department of Pharmacology and The Center for Lung and Vascular Biology, The University of Illinois College of Medicine, Chicago, IL 60612, USA
| | - Mumtaz Anwar
- Department of Pharmacology and The Center for Lung and Vascular Biology, The University of Illinois College of Medicine, Chicago, IL 60612, USA
| | - Md Zahid Akhter
- Department of Pharmacology and The Center for Lung and Vascular Biology, The University of Illinois College of Medicine, Chicago, IL 60612, USA
| | - Alejandra Chavez
- Department of Pharmacology and The Center for Lung and Vascular Biology, The University of Illinois College of Medicine, Chicago, IL 60612, USA
| | - De Yu Mao
- Department of Physiology, The University of Illinois College of Medicine, Chicago, IL 60612, USA
| | - Viswanathan Natarajan
- Department of Pharmacology and The Center for Lung and Vascular Biology, The University of Illinois College of Medicine, Chicago, IL 60612, USA; Department of Medicine, The University of Illinois College of Medicine, Chicago, IL 60612, USA
| | | | | | - Arkadiusz Z Dudek
- Department of Medicine, The University of Illinois College of Medicine, Chicago, IL 60612, USA
| | - Lena Claesson-Welsh
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Science for Life Laboratory, Uppsala University, 751 85 Uppsala, Sweden
| | - Jan K Kitajewski
- Department of Physiology, The University of Illinois College of Medicine, Chicago, IL 60612, USA
| | - Kishore K Wary
- Department of Pharmacology and The Center for Lung and Vascular Biology, The University of Illinois College of Medicine, Chicago, IL 60612, USA
| | - Asrar B Malik
- Department of Pharmacology and The Center for Lung and Vascular Biology, The University of Illinois College of Medicine, Chicago, IL 60612, USA
| | - Dolly Mehta
- Department of Pharmacology and The Center for Lung and Vascular Biology, The University of Illinois College of Medicine, Chicago, IL 60612, USA.
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19
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Anwar M, Mehta D. Post-translational modifications of S1PR1 and endothelial barrier regulation. Biochim Biophys Acta Mol Cell Biol Lipids 2020; 1865:158760. [PMID: 32585303 PMCID: PMC7409382 DOI: 10.1016/j.bbalip.2020.158760] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 06/09/2020] [Accepted: 06/15/2020] [Indexed: 12/16/2022]
Abstract
Sphingosine-1-phosphate receptor-1 (S1PR1), a G-protein coupled receptor that is expressed in endothelium and activated upon ligation by the bioactive lipid sphingosine-1-phosphate (S1P), is an important vascular-barrier protective mechanism at the level of adherens junctions (AJ). Loss of endothelial barrier function is a central factor in the pathogenesis of various inflammatory conditions characterized by protein-rich lung edema formation, such as acute respiratory distress syndrome (ARDS). While several S1PR1 agonists are available, the challenge of arresting the progression of protein-rich edema formation remains to be met. In this review, we discuss the role of S1PRs, especially S1PR1, in regulating endothelial barrier function. We review recent findings showing that replenishment of the pool of cell-surface S1PR1 may be crucial to the effectiveness of S1P in repairing the endothelial barrier. In this context, we discuss the S1P generating machinery and mechanisms that regulate S1PR1 at the cell surface and their impact on endothelial barrier function.
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Affiliation(s)
- Mumtaz Anwar
- Department of Pharmacology and Center for Lung and Vascular Biology, University of Illinois at Chicago Chicago, IL 60612, United States of America
| | - Dolly Mehta
- Department of Pharmacology and Center for Lung and Vascular Biology, University of Illinois at Chicago Chicago, IL 60612, United States of America.
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20
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Geng X, Yanagida K, Akwii RG, Choi D, Chen L, Ho Y, Cha B, Mahamud MR, Berman de Ruiz K, Ichise H, Chen H, Wythe JD, Mikelis CM, Hla T, Srinivasan RS. S1PR1 regulates the quiescence of lymphatic vessels by inhibiting laminar shear stress-dependent VEGF-C signaling. JCI Insight 2020; 5:137652. [PMID: 32544090 DOI: 10.1172/jci.insight.137652] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 06/10/2020] [Indexed: 12/11/2022] Open
Abstract
During the growth of lymphatic vessels (lymphangiogenesis), lymphatic endothelial cells (LECs) at the growing front sprout by forming filopodia. Those tip cells are not exposed to circulating lymph, as they are not lumenized. In contrast, LECs that trail the growing front are exposed to shear stress, become quiescent, and remodel into stable vessels. The mechanisms that coordinate the opposed activities of lymphatic sprouting and maturation remain poorly understood. Here, we show that the canonical tip cell marker Delta-like 4 (DLL4) promotes sprouting lymphangiogenesis by enhancing VEGF-C/VEGF receptor 3 (VEGFR3) signaling. However, in lumenized lymphatic vessels, laminar shear stress (LSS) inhibits the expression of DLL4, as well as additional tip cell markers. Paradoxically, LSS also upregulates VEGF-C/VEGFR3 signaling in LECs, but sphingosine 1-phosphate receptor 1 (S1PR1) activity antagonizes LSS-mediated VEGF-C signaling to promote lymphatic vascular quiescence. Correspondingly, S1pr1 loss in LECs induced lymphatic vascular hypersprouting and hyperbranching, which could be rescued by reducing Vegfr3 gene dosage in vivo. In addition, S1PR1 regulates lymphatic vessel maturation by inhibiting RhoA activity to promote membrane localization of the tight junction molecule claudin-5. Our findings suggest a potentially new paradigm in which LSS induces quiescence and promotes the survival of LECs by downregulating DLL4 and enhancing VEGF-C signaling, respectively. S1PR1 dampens LSS/VEGF-C signaling, thereby preventing sprouting from quiescent lymphatic vessels. These results also highlight the distinct roles that S1PR1 and DLL4 play in LECs when compared with their known roles in the blood vasculature.
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Affiliation(s)
- Xin Geng
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma, USA
| | - Keisuke Yanagida
- Vascular Biology Program, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Racheal G Akwii
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, Texas, USA
| | - Dongwon Choi
- Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Lijuan Chen
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma, USA
| | - YenChun Ho
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma, USA
| | - Boksik Cha
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma, USA
| | - Md Riaj Mahamud
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma, USA
| | - Karen Berman de Ruiz
- Cardiovascular Research Institute, Baylor College of Medicine, Houston, Texas, USA
| | - Hirotake Ichise
- Institute for Animal Research, Faculty of Medicine, University of Ryukyus, Nishihara-cho, Okinawa, Japan
| | - Hong Chen
- Vascular Biology Program, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Joshua D Wythe
- Cardiovascular Research Institute, Baylor College of Medicine, Houston, Texas, USA
| | - Constantinos M Mikelis
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, Texas, USA
| | - Timothy Hla
- Vascular Biology Program, Boston Children's Hospital, Boston, Massachusetts, USA
| | - R Sathish Srinivasan
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma, USA.,Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
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21
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Murine platelet production is suppressed by S1P release in the hematopoietic niche, not facilitated by blood S1P sensing. Blood Adv 2020; 3:1702-1713. [PMID: 31171507 DOI: 10.1182/bloodadvances.2019031948] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 04/17/2019] [Indexed: 02/06/2023] Open
Abstract
The bioactive lipid mediator sphingosine 1-phosphate (S1P) was recently assigned critical roles in platelet biology: whereas S1P1 receptor-mediated S1P gradient sensing was reported to be essential for directing proplatelet extensions from megakaryocytes (MKs) toward bone marrow sinusoids, MK sphingosine kinase 2 (Sphk2)-derived S1P was reported to further promote platelet shedding through receptor-independent intracellular actions, and platelet aggregation through S1P1 Yet clinical use of S1P pathway modulators including fingolimod has not been associated with risk of bleeding or thrombosis. We therefore revisited the role of S1P in platelet biology in mice. Surprisingly, no reduction in platelet counts was observed when the vascular S1P gradient was ablated by impairing S1P provision to plasma or S1P degradation in interstitial fluids, nor when gradient sensing was impaired by S1pr1 deletion selectively in MKs. Moreover, S1P1 expression and signaling were both undetectable in mature MKs in situ, and MK S1pr1 deletion did not affect platelet aggregation or spreading. When S1pr1 deletion was induced in hematopoietic progenitor cells, platelet counts were instead significantly elevated. Isolated global Sphk2 deficiency was associated with thrombocytopenia, but this was not replicated by MK-restricted Sphk2 deletion and was reversed by compound deletion of either Sphk1 or S1pr2, suggesting that this phenotype arises from increased S1P export and S1P2 activation secondary to redistribution of sphingosine to Sphk1. Consistent with clinical observations, we thus observe no essential role for S1P1 in facilitating platelet production or activation. Instead, S1P restricts megakaryopoiesis through S1P1, and can further suppress thrombopoiesis through S1P2 when aberrantly secreted in the hematopoietic niche.
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22
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The S1P-S1PR Axis in Neurological Disorders-Insights into Current and Future Therapeutic Perspectives. Cells 2020; 9:cells9061515. [PMID: 32580348 PMCID: PMC7349054 DOI: 10.3390/cells9061515] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 06/18/2020] [Accepted: 06/19/2020] [Indexed: 12/21/2022] Open
Abstract
Sphingosine 1-phosphate (S1P), derived from membrane sphingolipids, is a pleiotropic bioactive lipid mediator capable of evoking complex immune phenomena. Studies have highlighted its importance regarding intracellular signaling cascades as well as membrane-bound S1P receptor (S1PR) engagement in various clinical conditions. In neurological disorders, the S1P–S1PR axis is acknowledged in neurodegenerative, neuroinflammatory, and cerebrovascular disorders. Modulators of S1P signaling have enabled an immense insight into fundamental pathological pathways, which were pivotal in identifying and improving the treatment of human diseases. However, its intricate molecular signaling pathways initiated upon receptor ligation are still poorly elucidated. In this review, the authors highlight the current evidence for S1P signaling in neurodegenerative and neuroinflammatory disorders as well as stroke and present an array of drugs targeting the S1P signaling pathway, which are being tested in clinical trials. Further insights on how the S1P–S1PR axis orchestrates disease initiation, progression, and recovery may hold a remarkable potential regarding therapeutic options in these neurological disorders.
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23
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Ding BS, Yang D, Swendeman SL, Christoffersen C, Nielsen LB, Friedman SL, Powell CA, Hla T, Cao Z. Aging Suppresses Sphingosine-1-Phosphate Chaperone ApoM in Circulation Resulting in Maladaptive Organ Repair. Dev Cell 2020; 53:677-690.e4. [PMID: 32544390 DOI: 10.1016/j.devcel.2020.05.024] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 03/14/2020] [Accepted: 05/22/2020] [Indexed: 02/06/2023]
Abstract
Here, we show that the liver-derived apolipoprotein M (ApoM) protects the lung and kidney from pro-fibrotic insults and that this circulating factor is attenuated in aged mice. Aged mouse hepatocytes exhibit transcriptional suppression of ApoM. This leads to reduced sphingosine-1-phosphate (S1P) signaling via the S1P receptor 1 (S1PR1) in the vascular endothelial cells of lung and kidney. Suboptimal S1PR1 angiocrine signaling causes reduced resistance to injury-induced vascular leak and leads to organ fibrosis. Plasma transfusion from Apom transgenic mice but not Apom knockout mice blocked fibrosis in the lung. Similarly, infusion of recombinant therapeutics, ApoM-Fc fusion protein enhanced kidney and lung regeneration and attenuated fibrosis in aged mouse after injury. Furthermore, we identified that aging alters Sirtuin-1-hepatic nuclear factor 4α circuit in hepatocytes to downregulate ApoM. These data reveal an integrative organ adaptation that involves circulating S1P chaperone ApoM+ high density lipoprotein (HDL), which signals via endothelial niche S1PR1 to spur regeneration over fibrosis.
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Affiliation(s)
- Bi-Sen Ding
- Fibrosis Research Center, Mount Sinai-National Jewish Respiratory Institute, Division of Pulmonary, Critical Care, and Sleep Medicine, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Ansary Stem Cell Institute, Division of Regenerative Medicine, Department of Medicine, Weill Cornell Medicine, New York, NY 10065, USA.
| | - Dawei Yang
- Fibrosis Research Center, Mount Sinai-National Jewish Respiratory Institute, Division of Pulmonary, Critical Care, and Sleep Medicine, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Steve L Swendeman
- Vascular Biology Program, Boston Children's Hospital, Department of Surgery, Harvard Medical School, Boston, MA 02115, USA
| | - Christina Christoffersen
- Department of Clinical Biochemistry, Righosiptalet, and Department of Biomedical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Lars B Nielsen
- Department of Clinical Biochemistry, Righosiptalet, and Department of Biomedical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark; Aarhus University, 8000 Aarhus, Denmark
| | - Scott L Friedman
- Division of Liver Diseases, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Charles A Powell
- Fibrosis Research Center, Mount Sinai-National Jewish Respiratory Institute, Division of Pulmonary, Critical Care, and Sleep Medicine, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Timothy Hla
- Vascular Biology Program, Boston Children's Hospital, Department of Surgery, Harvard Medical School, Boston, MA 02115, USA
| | - Zhongwei Cao
- Fibrosis Research Center, Mount Sinai-National Jewish Respiratory Institute, Division of Pulmonary, Critical Care, and Sleep Medicine, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Ansary Stem Cell Institute, Division of Regenerative Medicine, Department of Medicine, Weill Cornell Medicine, New York, NY 10065, USA.
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24
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Abstract
The signaling lipid sphingosine 1-phosphate (S1P) plays critical roles in an immune response. Drugs targeting S1P signaling have been remarkably successful in treatment of multiple sclerosis, and they have shown promise in clinical trials for colitis and psoriasis. One mechanism of these drugs is to block lymphocyte exit from lymph nodes, where lymphocytes are initially activated, into circulation, from which lymphocytes can reach sites of inflammation. Indeed, S1P can be considered a circulation marker, signaling to immune cells to help them find blood and lymphatic vessels, and to endothelial cells to stabilize the vasculature. That said, S1P plays pleiotropic roles in the immune response, and it will be important to build an integrated view of how S1P shapes inflammation. S1P can function so effectively because its distribution is exquisitely tightly controlled. Here we review how S1P gradients regulate immune cell exit from tissues, with particular attention to key outstanding questions in the field.
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Affiliation(s)
- Audrey A.L. Baeyens
- Skirball Institute of Biomolecular Medicine, New York University School of Medicine, New York, NY 10016, USA;,
| | - Susan R. Schwab
- Skirball Institute of Biomolecular Medicine, New York University School of Medicine, New York, NY 10016, USA;,
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25
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Cartier A, Hla T. Sphingosine 1-phosphate: Lipid signaling in pathology and therapy. Science 2020; 366:366/6463/eaar5551. [PMID: 31624181 DOI: 10.1126/science.aar5551] [Citation(s) in RCA: 321] [Impact Index Per Article: 80.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 07/30/2019] [Indexed: 12/13/2022]
Abstract
Sphingosine 1-phosphate (S1P), a metabolic product of cell membrane sphingolipids, is bound to extracellular chaperones, is enriched in circulatory fluids, and binds to G protein-coupled S1P receptors (S1PRs) to regulate embryonic development, postnatal organ function, and disease. S1PRs regulate essential processes such as adaptive immune cell trafficking, vascular development, and homeostasis. Moreover, S1PR signaling is a driver of multiple diseases. The past decade has witnessed an exponential growth in this field, in part because of multidisciplinary research focused on this lipid mediator and the application of S1PR-targeted drugs in clinical medicine. This has revealed fundamental principles of lysophospholipid mediator signaling that not only clarify the complex and wide ranging actions of S1P but also guide the development of therapeutics and translational directions in immunological, cardiovascular, neurological, inflammatory, and fibrotic diseases.
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Affiliation(s)
- Andreane Cartier
- Vascular Biology Program, Boston Children's Hospital and Department of Surgery, Harvard Medical School, Boston, MA 02115, USA
| | - Timothy Hla
- Vascular Biology Program, Boston Children's Hospital and Department of Surgery, Harvard Medical School, Boston, MA 02115, USA.
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26
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Engelbrecht E, Levesque MV, He L, Vanlandewijck M, Nitzsche A, Niazi H, Kuo A, Singh SA, Aikawa M, Holton K, Proia RL, Kono M, Pu WT, Camerer E, Betsholtz C, Hla T. Sphingosine 1-phosphate-regulated transcriptomes in heterogenous arterial and lymphatic endothelium of the aorta. eLife 2020; 9:52690. [PMID: 32091396 PMCID: PMC7054001 DOI: 10.7554/elife.52690] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Accepted: 02/22/2020] [Indexed: 12/17/2022] Open
Abstract
Despite the medical importance of G protein-coupled receptors (GPCRs), in vivo cellular heterogeneity of GPCR signaling and downstream transcriptional responses are not understood. We report the comprehensive characterization of transcriptomes (bulk and single-cell) and chromatin domains regulated by sphingosine 1-phosphate receptor-1 (S1PR1) in adult mouse aortic endothelial cells. First, S1PR1 regulates NFκB and nuclear glucocorticoid receptor pathways to suppress inflammation-related mRNAs. Second, S1PR1 signaling in the heterogenous endothelial cell (EC) subtypes occurs at spatially-distinct areas of the aorta. For example, a transcriptomically distinct arterial EC population at vascular branch points (aEC1) exhibits ligand-independent S1PR1/ß-arrestin coupling. In contrast, circulatory S1P-dependent S1PR1/ß-arrestin coupling was observed in non-branch point aEC2 cells that exhibit an inflammatory gene expression signature. Moreover, S1P/S1PR1 signaling regulates the expression of lymphangiogenic and inflammation-related transcripts in an adventitial lymphatic EC (LEC) population in a ligand-dependent manner. These insights add resolution to existing concepts of endothelial heterogeneity, GPCR signaling and S1P biology.
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Affiliation(s)
- Eric Engelbrecht
- Vascular Biology Program, Boston Children's Hospital, Deapartment of Surgery, Harvard Medical School, Boston, United States
| | - Michel V Levesque
- Vascular Biology Program, Boston Children's Hospital, Deapartment of Surgery, Harvard Medical School, Boston, United States
| | - Liqun He
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden.,Karolinska Institutet/AstraZeneca Integrated Cardio Metabolic Centre (KI/AZ ICMC), Karolinska Institutet, Huddinge, Sweden
| | - Michael Vanlandewijck
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden.,Karolinska Institutet/AstraZeneca Integrated Cardio Metabolic Centre (KI/AZ ICMC), Karolinska Institutet, Huddinge, Sweden
| | - Anja Nitzsche
- Université de Paris, INSERM U970, Paris Cardiovascular Research Center, Paris, France
| | - Hira Niazi
- Université de Paris, INSERM U970, Paris Cardiovascular Research Center, Paris, France
| | - Andrew Kuo
- Vascular Biology Program, Boston Children's Hospital, Deapartment of Surgery, Harvard Medical School, Boston, United States
| | - Sasha A Singh
- Center for Interdisciplinary Cardiovascular Sciences, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, United States
| | - Masanori Aikawa
- Center for Interdisciplinary Cardiovascular Sciences, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, United States
| | - Kristina Holton
- Harvard Medical School Research Computing, Boston, United States
| | - Richard L Proia
- Genetics of Development and Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, United States
| | - Mari Kono
- Genetics of Development and Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, United States
| | - William T Pu
- Department of Cardiology, Boston Children's Hospital, Harvard Medical School, Boston, United States.,Harvard Stem Cell Institute, Harvard University, Cambridge, United States
| | - Eric Camerer
- Université de Paris, INSERM U970, Paris Cardiovascular Research Center, Paris, France
| | - Christer Betsholtz
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden.,Karolinska Institutet/AstraZeneca Integrated Cardio Metabolic Centre (KI/AZ ICMC), Karolinska Institutet, Huddinge, Sweden
| | - Timothy Hla
- Vascular Biology Program, Boston Children's Hospital, Deapartment of Surgery, Harvard Medical School, Boston, United States
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27
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Endothelial sphingosine 1-phosphate receptors promote vascular normalization and antitumor therapy. Proc Natl Acad Sci U S A 2020; 117:3157-3166. [PMID: 31988136 PMCID: PMC7022165 DOI: 10.1073/pnas.1906246117] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Tumor progression is dependent on angiogenesis, which supplies nutrients and enables gas exchange and metastatic dissemination. However, tumor vessels are dysfunctional and immature, which hinders the effectiveness of various therapeutics. Sphingosine 1-phosphate receptors in endothelial cells are essential for developmental angiogenesis and physiological functions such as the maintenance of the vascular barrier and vascular tone. This study shows that endothelial sphingosine 1-phosphate receptors determine the tumor vascular phenotype and maturation and that function of S1P receptor-1 is needed for tumor vascular normalization, which allows better blood circulation and enhances antitumor therapeutic efficacy in mouse models. Sphingosine 1-phosphate receptor-1 (S1PR1) is essential for embryonic vascular development and maturation. In the adult, it is a key regulator of vascular barrier function and inflammatory processes. Its roles in tumor angiogenesis, tumor growth, and metastasis are not well understood. In this paper, we show that S1PR1 is expressed and active in tumor vessels. Murine tumor vessels that lack S1PR1 in the vascular endothelium (S1pr1 ECKO) show excessive vascular sprouting and branching, decreased barrier function, and poor perfusion accompanied by loose attachment of pericytes. Compound knockout of S1pr1, 2, and 3 genes further exacerbated these phenotypes, suggesting compensatory function of endothelial S1PR2 and 3 in the absence of S1PR1. On the other hand, tumor vessels with high expression of S1PR1 (S1pr1 ECTG) show less branching, tortuosity, and enhanced pericyte coverage. Larger tumors and enhanced lung metastasis were seen in S1pr1 ECKO, whereas S1pr1 ECTG showed smaller tumors and reduced metastasis. Furthermore, antitumor activity of a chemotherapeutic agent (doxorubicin) and immune checkpoint inhibitor blocker (anti-PD-1 antibody) were more effective in S1pr1 ECTG than in the wild-type counterparts. These data suggest that tumor endothelial S1PR1 induces vascular normalization and influences tumor growth and metastasis, thus enhancing antitumor therapies in mouse models. Strategies to enhance S1PR1 signaling in tumor vessels may be an important adjunct to standard cancer therapy of solid tumors.
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28
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Dixit D, Okuniewska M, Schwab SR. Secrets and lyase: Control of sphingosine 1-phosphate distribution. Immunol Rev 2020; 289:173-185. [PMID: 30977198 DOI: 10.1111/imr.12760] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 03/05/2019] [Accepted: 03/09/2019] [Indexed: 12/26/2022]
Abstract
The signaling lipid sphingosine 1-phosphate (S1P) plays key roles in many physiological processes. In the immune system, S1P's best-described function is to draw cells out of tissues into circulation. Here, we will review models of S1P distribution in the thymus, lymph nodes, spleen, and nonlymphoid tissues. These models have been challenging to construct, because of the lack of tools to map lipid gradients. Nonetheless, evidence to date suggests that S1P distribution is exquisitely tightly controlled, and that concentrations of signaling-available S1P cannot be predicted by standard rules of thumb. The fine regulation of S1P gradients may explain how S1P can simultaneously direct multiple cell movements both between tissues and circulation and within tissues. It may also make it feasible to develop drugs that enable spatially specific modulation of S1P signaling.
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Affiliation(s)
- Dhaval Dixit
- Skirball Institute of Biomolecular Medicine, New York University School of Medicine, New York City, New York
| | - Martyna Okuniewska
- Skirball Institute of Biomolecular Medicine, New York University School of Medicine, New York City, New York
| | - Susan R Schwab
- Skirball Institute of Biomolecular Medicine, New York University School of Medicine, New York City, New York
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29
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Simmons S, Sasaki N, Umemoto E, Uchida Y, Fukuhara S, Kitazawa Y, Okudaira M, Inoue A, Tohya K, Aoi K, Aoki J, Mochizuki N, Matsuno K, Takeda K, Miyasaka M, Ishii M. High-endothelial cell-derived S1P regulates dendritic cell localization and vascular integrity in the lymph node. eLife 2019; 8:41239. [PMID: 31570118 PMCID: PMC6773441 DOI: 10.7554/elife.41239] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2018] [Accepted: 09/10/2019] [Indexed: 02/06/2023] Open
Abstract
While the sphingosine-1-phosphate (S1P)/sphingosine-1-phosphate receptor-1 (S1PR1) axis is critically important for lymphocyte egress from lymphoid organs, S1PR1-activation also occurs in vascular endothelial cells (ECs), including those of the high-endothelial venules (HEVs) that mediate lymphocyte immigration into lymph nodes (LNs). To understand the functional significance of the S1P/S1PR1-Gi axis in HEVs, we generated Lyve1;Spns2Δ/Δ conditional knockout mice for the S1P-transporter Spinster-homologue-2 (SPNS2), as HEVs express LYVE1 during development. In these mice HEVs appeared apoptotic and were severely impaired in function, morphology and size; leading to markedly hypotrophic peripheral LNs. Dendritic cells (DCs) were unable to interact with HEVs, which was also observed in Cdh5CRE-ERT2;S1pr1Δ/Δ mice and wildtype mice treated with S1PR1-antagonists. Wildtype HEVs treated with S1PR1-antagonists in vitro and Lyve1-deficient HEVs show severely reduced release of the DC-chemoattractant CCL21 in vivo. Together, our results reveal that EC-derived S1P warrants HEV-integrity through autocrine control of S1PR1-Gi signaling, and facilitates concomitant HEV-DC interactions.
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Affiliation(s)
- Szandor Simmons
- Department of Immunology and Cell Biology, Graduate School of Medicine and Frontier Biosciences, Osaka University, Osaka, Japan.,WPI Immunology Frontier Research Center, Osaka University, Osaka, Japan.,JST CREST, Tokyo, Japan
| | - Naoko Sasaki
- Department of Microbiology and Immunology, Laboratory of Immune Regulation, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Eiji Umemoto
- WPI Immunology Frontier Research Center, Osaka University, Osaka, Japan.,Department of Microbiology and Immunology, Laboratory of Immune Regulation, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Yutaka Uchida
- Department of Immunology and Cell Biology, Graduate School of Medicine and Frontier Biosciences, Osaka University, Osaka, Japan.,JST CREST, Tokyo, Japan
| | - Shigetomo Fukuhara
- Department of Cell Biology, National Cerebral and Cardiovascular Center Research Institute, Osaka, Japan
| | - Yusuke Kitazawa
- Department of Anatomy (Macro), Dokkyo Medical University, Tochigi, Japan
| | - Michiyo Okudaira
- Laboratory of Molecular and Cellular Biochemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Miyagi, Japan
| | - Asuka Inoue
- Laboratory of Molecular and Cellular Biochemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Miyagi, Japan
| | - Kazuo Tohya
- Department of Anatomy, Kansai University of Health Sciences, Osaka, Japan
| | - Keita Aoi
- Department of Immunology and Cell Biology, Graduate School of Medicine and Frontier Biosciences, Osaka University, Osaka, Japan.,WPI Immunology Frontier Research Center, Osaka University, Osaka, Japan.,JST CREST, Tokyo, Japan
| | - Junken Aoki
- Laboratory of Molecular and Cellular Biochemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Miyagi, Japan
| | - Naoki Mochizuki
- Department of Cell Biology, National Cerebral and Cardiovascular Center Research Institute, Osaka, Japan
| | - Kenjiro Matsuno
- Department of Anatomy (Macro), Dokkyo Medical University, Tochigi, Japan
| | - Kiyoshi Takeda
- WPI Immunology Frontier Research Center, Osaka University, Osaka, Japan.,Department of Microbiology and Immunology, Laboratory of Immune Regulation, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Masayuki Miyasaka
- WPI Immunology Frontier Research Center, Osaka University, Osaka, Japan.,MediCity Research Laboratory, University of Turku, Turku, Finland.,Interdisciplinary Program for Biomedical Sciences, Institute for Academic Initiatives, Osaka University, Osaka, Japan
| | - Masaru Ishii
- Department of Immunology and Cell Biology, Graduate School of Medicine and Frontier Biosciences, Osaka University, Osaka, Japan.,WPI Immunology Frontier Research Center, Osaka University, Osaka, Japan.,JST CREST, Tokyo, Japan
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30
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Design, synthesis and anticancer activity of constrained sphingolipid-phenoxazine/phenothiazine hybrid constructs targeting protein phosphatase 2A. Bioorg Med Chem Lett 2019; 29:2681-2685. [PMID: 31383588 DOI: 10.1016/j.bmcl.2019.07.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 07/12/2019] [Accepted: 07/13/2019] [Indexed: 12/13/2022]
Abstract
Inspired by the cytotoxicity of perphenazine toward cancer cells and its ability to activate the serine/threonine protein phosphatase 2A (PP2A), we prepared series of ether-carbon linked analogs of a constrained synthetic sphingolipid analog 3, known for its cytotoxicity, nutrient transporter down-regulation and vacuolation properties, incorporating the tricyclic neuroleptics phenoxazine and phenothiazine to represent hybrid structures with possible synergistic cytotoxic activity. While the original activity of the lead compound 3 was diminished by fusion with the phenoxazine or phenothiazine tethered moieties, the corresponding 3-pyridyltetryl ether analog 10 showed cytotoxicity and nutrient transporter down-regulation similar to the lead compound 3, although it separated these PP2A-dependent phenotypes from that of vacuolation.
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31
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Li H, Zhou X, Li Y, Ma X, Gonzales RJ, Qiu S, Shi FD, Liu Q. The selective sphingosine 1‐phosphate receptor 1 modulator RP101075 improves microvascular circulation after cerebrovascular thrombosis. FASEB J 2019; 33:10935-10941. [DOI: 10.1096/fj.201900282r] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Handong Li
- Department of Basic Medical SciencesUniversity of Arizona College of MedicinePhoenixArizonaUSA
| | - Xing Zhou
- Department of Basic Medical SciencesSchool of MedicineInstitute for ImmunologyTsinghua UniversityBeijingChina
| | - Yujing Li
- Department of Basic Medical SciencesUniversity of Arizona College of MedicinePhoenixArizonaUSA
- Barrow Neurological InstituteSt. Joseph's HospitalMedical CenterPhoenixArizonaUSA
| | - Xiaokuang Ma
- Department of Basic Medical SciencesUniversity of Arizona College of MedicinePhoenixArizonaUSA
| | - Rayna J. Gonzales
- Department of Basic Medical SciencesUniversity of Arizona College of MedicinePhoenixArizonaUSA
| | - Shenfeng Qiu
- Department of Basic Medical SciencesUniversity of Arizona College of MedicinePhoenixArizonaUSA
| | - Fu-Dong Shi
- Barrow Neurological InstituteSt. Joseph's HospitalMedical CenterPhoenixArizonaUSA
| | - Qiang Liu
- Department of Basic Medical SciencesUniversity of Arizona College of MedicinePhoenixArizonaUSA
- Barrow Neurological InstituteSt. Joseph's HospitalMedical CenterPhoenixArizonaUSA
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32
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Hisano Y, Kono M, Cartier A, Engelbrecht E, Kano K, Kawakami K, Xiong Y, Piao W, Galvani S, Yanagida K, Kuo A, Ono Y, Ishida S, Aoki J, Proia RL, Bromberg JS, Inoue A, Hla T. Lysolipid receptor cross-talk regulates lymphatic endothelial junctions in lymph nodes. J Exp Med 2019; 216:1582-1598. [PMID: 31147448 PMCID: PMC6605750 DOI: 10.1084/jem.20181895] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 03/29/2019] [Accepted: 05/06/2019] [Indexed: 12/16/2022] Open
Abstract
Sphingosine 1-phosphate (S1P) and lysophosphatidic acid (LPA) activate G protein-coupled receptors (GPCRs) to regulate biological processes. Using a genome-wide CRISPR/dCas9-based GPCR signaling screen, LPAR1 was identified as an inducer of S1PR1/β-arrestin coupling while suppressing Gαi signaling. S1pr1 and Lpar1-positive lymphatic endothelial cells (LECs) of lymph nodes exhibit constitutive S1PR1/β-arrestin signaling, which was suppressed by LPAR1 antagonism. Pharmacological inhibition or genetic loss of function of Lpar1 reduced the frequency of punctate junctions at sinus-lining LECs. Ligand activation of transfected LPAR1 in endothelial cells remodeled junctions from continuous to punctate structures and increased transendothelial permeability. In addition, LPAR1 antagonism in mice increased lymph node retention of adoptively transferred lymphocytes. These data suggest that cross-talk between LPAR1 and S1PR1 promotes the porous junctional architecture of sinus-lining LECs, which enables efficient lymphocyte trafficking. Heterotypic inter-GPCR coupling may regulate complex cellular phenotypes in physiological milieu containing many GPCR ligands.
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Affiliation(s)
- Yu Hisano
- Vascular Biology Program, Boston Children's Hospital, Department of Surgery, Harvard Medical School, Boston, MA
| | - Mari Kono
- Genetics of Development and Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD
| | - Andreane Cartier
- Vascular Biology Program, Boston Children's Hospital, Department of Surgery, Harvard Medical School, Boston, MA
| | - Eric Engelbrecht
- Vascular Biology Program, Boston Children's Hospital, Department of Surgery, Harvard Medical School, Boston, MA
| | - Kuniyuki Kano
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Kouki Kawakami
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Yanbao Xiong
- Department of Surgery, University of Maryland School of Medicine, Baltimore, MD
| | - Wenji Piao
- Department of Surgery, University of Maryland School of Medicine, Baltimore, MD
| | - Sylvain Galvani
- Vascular Biology Program, Boston Children's Hospital, Department of Surgery, Harvard Medical School, Boston, MA
| | - Keisuke Yanagida
- Vascular Biology Program, Boston Children's Hospital, Department of Surgery, Harvard Medical School, Boston, MA
| | - Andrew Kuo
- Vascular Biology Program, Boston Children's Hospital, Department of Surgery, Harvard Medical School, Boston, MA
| | - Yuki Ono
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Satoru Ishida
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Junken Aoki
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Richard L Proia
- Genetics of Development and Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD
| | - Jonathan S Bromberg
- Department of Surgery, University of Maryland School of Medicine, Baltimore, MD
| | - Asuka Inoue
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Timothy Hla
- Vascular Biology Program, Boston Children's Hospital, Department of Surgery, Harvard Medical School, Boston, MA
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33
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Xiao L, Zhou Y, Friis T, Beagley K, Xiao Y. S1P-S1PR1 Signaling: the "Sphinx" in Osteoimmunology. Front Immunol 2019; 10:1409. [PMID: 31293578 PMCID: PMC6603153 DOI: 10.3389/fimmu.2019.01409] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 06/04/2019] [Indexed: 12/24/2022] Open
Abstract
The fundamental interaction between the immune and skeletal systems, termed as osteoimmunology, has been demonstrated to play indispensable roles in the maintenance of balance between bone resorption and formation. The pleiotropic sphingolipid metabolite, sphingosine 1-phosphate (S1P), together with its cognate receptor, sphingosine-1-phosphate receptor-1 (S1PR1), are known as key players in osteoimmunology due to the regulation on both immune system and bone remodeling. The role of S1P-S1PR1 signaling in bone remodeling can be directly targeting both osteoclastogenesis and osteogenesis. Meanwhile, inflammatory cell function and polarization in both adaptive immune (T cell subsets) and innate immune cells (macrophages) are also regulated by this signaling axis, suggesting that S1P-S1PR1 signaling could aslo indirectly regulate bone remodeling via modulating the immune system. Therefore, it could be likely that S1P-S1PR1 signaling might take part in the maintenance of continuous bone turnover under physiological conditions, while lead to the pathogenesis of bone deformities during inflammation. In this review, we summarized the immunological regulation of S1P-S1PR1 signal axis during bone remodeling with an emphasis on how osteo-immune regulators are affected by inflammation, an issue with relevance to chronical bone disorders such as rheumatoid arthritis, spondyloarthritis and periodontitis.
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Affiliation(s)
- Lan Xiao
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD, Australia.,The Australia-China Centre for Tissue Engineering and Regenerative Medicine, Queensland University of Technology, Brisbane, QLD, Australia
| | - Yinghong Zhou
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD, Australia.,The Australia-China Centre for Tissue Engineering and Regenerative Medicine, Queensland University of Technology, Brisbane, QLD, Australia.,Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangzhou, China
| | - Thor Friis
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD, Australia
| | - Kenneth Beagley
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD, Australia.,The Australia-China Centre for Tissue Engineering and Regenerative Medicine, Queensland University of Technology, Brisbane, QLD, Australia
| | - Yin Xiao
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD, Australia.,The Australia-China Centre for Tissue Engineering and Regenerative Medicine, Queensland University of Technology, Brisbane, QLD, Australia.,Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangzhou, China
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34
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Lu E, Cyster JG. G-protein coupled receptors and ligands that organize humoral immune responses. Immunol Rev 2019; 289:158-172. [PMID: 30977196 PMCID: PMC6464390 DOI: 10.1111/imr.12743] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Accepted: 01/22/2019] [Indexed: 12/26/2022]
Abstract
B-cell responses are dynamic processes that depend on multiple types of interactions. Rare antigen-specific B cells must encounter antigen and specialized systems are needed-unique to each lymphoid tissue type-to ensure this happens efficiently. Lymphoid tissue barrier cells act to ensure that pathogens, while being permitted entry for B-cell recognition, are blocked from replication or dissemination. T follicular helper (Tfh) cells often need to be primed by dendritic cells before supporting B-cell responses. For most responses, antigen-specific helper T cells and B cells need to interact, first to initiate clonal expansion and the plasmablast response, and later to support the germinal center (GC) response. Newly formed plasma cells need to travel to supportive niches. GC B cells must become confined to the follicle center, organize into dark and light zones, and interact with Tfh cells. Memory B cells need to be positioned for rapid responses following reinfection. Each of these events requires the actions of multiple G-protein coupled receptors (GPCRs) and their ligands, including chemokines and lipid mediators. This review will focus on the guidance cue code underlying B-cell immunity, with an emphasis on findings from our laboratory and on newer advances in related areas. We will discuss our recent identification of geranylgeranyl-glutathione as a ligand for P2RY8. Our goal is to provide the reader with a focused knowledge about the GPCRs guiding B-cell responses and how they might be therapeutic targets, while also providing examples of how multiple types of GPCRs can cooperate or act iteratively to control cell behavior.
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Affiliation(s)
- Erick Lu
- Howard Hughes Medical Institute and Department of Microbiology and Immunology, University of California San Francisco, San Francisco, California
| | - Jason G Cyster
- Howard Hughes Medical Institute and Department of Microbiology and Immunology, University of California San Francisco, San Francisco, California
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35
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Talmont F, Moulédous L, Baranger M, Gomez-Brouchet A, Zajac JM, Deffaud C, Cuvillier O, Hatzoglou A. Development and characterization of sphingosine 1-phosphate receptor 1 monoclonal antibody suitable for cell imaging and biochemical studies of endogenous receptors. PLoS One 2019; 14:e0213203. [PMID: 30845158 PMCID: PMC6405204 DOI: 10.1371/journal.pone.0213203] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 02/15/2019] [Indexed: 11/18/2022] Open
Abstract
Although sphingosine-1-phosphate receptor 1 (S1P1) has been shown to trigger several S1P targeted functions such as immune cell trafficking, cell proliferation, migration, or angiogenesis, tools that allow the accurate detection of endogenous S1P1 localization and trafficking remain to be obtained and validated. In this study, we developed and characterized a novel monoclonal S1P1 antibody. Mice were immunized with S1P1 produced in the yeast Pichia pastoris and nine hybridoma clones producing monoclonal antibodies were created. Using different technical approaches including Western blot, immunoprecipitation and immunocytochemistry, we show that a selected clone, hereinafter referred to as 2B9, recognizes human and mouse S1P1 in various cell lineages. The interaction between 2B9 and S1P1 is specific over receptor subtypes, as the antibody does not binds to S1P2 or S1P5 receptors. Using cell-imaging methods, we demonstrate that 2B9 binds to an epitope located at the intracellular domain of S1P1; reveals cytosolic and membrane localization of the endogenous S1P1; and receptor internalization upon S1P or FTY720-P stimulation. Finally, loss of 2B9 signal upon knockdown of endogenous S1P1 by specific small interference RNAs further confirms its specificity. 2B9 was also able to detect S1P1 in human kidney and spinal cord tissue by immunohistochemistry. Altogether, our results suggest that 2B9 could be a useful tool to detect, quantify or localize low amounts of endogenous S1P1 in various physiological and pathological processes.
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Affiliation(s)
- Franck Talmont
- Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Lionel Moulédous
- Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS, Toulouse, France
| | | | - Anne Gomez-Brouchet
- Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS, Toulouse, France.,Service d'anatomie et cytologie pathologiques, IUCT Oncopole, Toulouse, France
| | - Jean-Marie Zajac
- Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS, Toulouse, France
| | | | - Olivier Cuvillier
- Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Anastassia Hatzoglou
- Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS, Toulouse, France
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36
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Wang J, Kano K, Saigusa D, Aoki J. Measurement of the Spatial Distribution of S1P in Small Quantities of Tissues: Development and Application of a Highly Sensitive LC-MS/MS Method Combined with Laser Microdissection. ACTA ACUST UNITED AC 2019; 8:A0072. [PMID: 30805275 PMCID: PMC6372364 DOI: 10.5702/massspectrometry.a0072] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 12/03/2018] [Indexed: 11/23/2022]
Abstract
Sphingosine-1-phosphate (S1P) acts as an extracellular signaling molecule with diverse biological functions. Tissues appear to have an S1P gradient, which is functionally relevant in the biological significance of S1P, although its existence has not been measured directly. Here, we report a highly sensitive method to determine the distribution of S1P, using a column-switching LC-MS/MS system combined with laser microdissection (LMD). Column switching using narrow core Capcell Pak C18 analytical and trap columns with 0.3 mm inner diameter improved the performance of the LC-MS/MS system. The calibration curve of S1P showed good linearity (r>0.999) over the range of 0.05–10 nM (1–200 fmol/injection). The accuracy of the method was confirmed by measuring S1P-spiked laser microdissected mice tissue sections. To evaluate our S1P analytical method, we quantified S1P extracted from micro-dissected mouse brain and spleen. These results show that this method can measure low S1P concentrations and determine S1P distribution in tissue microenvironments.
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Affiliation(s)
- Jiao Wang
- Laboratory of Molecular and Cellular Biochemistry, Graduate School of Pharmaceutical Sciences, Tohoku University
| | - Kuniyuki Kano
- Laboratory of Molecular and Cellular Biochemistry, Graduate School of Pharmaceutical Sciences, Tohoku University.,AMED·LEAP
| | - Daisuke Saigusa
- Department of Integrative Genomics, Tohoku Medical Megabank Organization, Tohoku University.,Medical Biochemistry, Tohoku University School of Medicine.,AMED·LEAP
| | - Junken Aoki
- Laboratory of Molecular and Cellular Biochemistry, Graduate School of Pharmaceutical Sciences, Tohoku University.,AMED·LEAP
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37
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Liu H, Jin H, Han J, Yue X, Yang H, Zayed MA, Gropler RJ, Tu Z. Upregulated Sphingosine 1-Phosphate Receptor 1 Expression in Human and Murine Atherosclerotic Plaques. Mol Imaging Biol 2019; 20:448-456. [PMID: 29134505 DOI: 10.1007/s11307-017-1141-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
PURPOSE Dysregulation of sphingosine 1-phosphate receptor 1 (S1PR1) signaling contributes to inflammation-related pathophysiological changes in cardiovascular diseases including atherosclerosis (AS). S1PR1-targeting compounds significantly reduce lesion size in murine models of AS. Therefore, characterization of S1PR1 expression in vitro and in vivo in atherosclerotic plaque could enable mechanistic studies and inform S1PR1 targeted therapies. PROCEDURES H&E staining and immunostaining studies were performed on variably diseased human femoral endarterectomy plaque specimens, as well as mouse aortic sections from ApoE-/- mice maintained on a high-fat diet (AS mice). In vitro autoradiography study in human femoral plaques was used to confirm the tracer specificity. Micro positron emission tomography (PET) and ex vivo autoradiography studies were conducted in AS mice and their controls using a S1PR1-specific radioligand [11C]TZ3321 for in vivo and ex vivo quantification of S1PR1 expression in mouse aortic plaques. RESULTS Increased S1PR1 expression was observed in areas of human femoral endarterectomy plaque specimens with foam cell accumulation compared with control tissue; in vitro autoradiography study indicated that SEW2781, a S1PR1 compound was able to reduce the uptake of [11C]TZ3321 by 56 %. S1PR1 levels were also upregulated in AS mouse aortic plaques. MicroPET data showed the aorta-to-blood tracer uptake ratio in AS mice was approximately 20 % higher than that in controls. Autoradiographic study also revealed elevated tracer accumulation in AS mouse aorta. CONCLUSIONS Upregulated S1PR1 expression in human and mouse atherosclerotic plaques was successfully identified by immunostaining and radioligand-based methods. This data demonstrates that [11C]TZ3321 PET provides great promise in imaging S1PR1 expression in atherosclerotic plaques.
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Affiliation(s)
- Hui Liu
- Department of Radiology, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Hongjun Jin
- Department of Radiology, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Junbin Han
- Department of Radiology, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Xuyi Yue
- Department of Radiology, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Hao Yang
- Department of Radiology, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Mohamed A Zayed
- Department of Surgery, Section of Vascular Surgery, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Robert J Gropler
- Department of Radiology, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Zhude Tu
- Department of Radiology, Washington University School of Medicine, St. Louis, MO, 63110, USA.
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38
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Ho Wei L, Arastoo M, Georgiou I, Manning DR, Riobo-Del Galdo NA. Activation of the Gi protein-RHOA axis by non-canonical Hedgehog signaling is independent of primary cilia. PLoS One 2018; 13:e0203170. [PMID: 30148884 PMCID: PMC6110505 DOI: 10.1371/journal.pone.0203170] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 08/15/2018] [Indexed: 12/15/2022] Open
Abstract
Primary cilia are solitary organelles that emanate from the plasma membrane during growth arrest in almost all mammalian cells. The canonical Hedgehog (HH) pathway requires trafficking of the G protein-coupled receptor SMOOTHENED (SMO) and the GLI transcription factors to the primary cilium upon binding of a HH ligand to PATCHED1. However, it is unknown if activation of the small GTPase RHOA by SMO coupling to heterotrimeric Gi proteins, a form of non-canonical HH signaling, requires localization of SMO in the primary cilium. In this study, we compared RHOA and Gi protein stimulation by activation of SMO or sphingosine 1-phosphate receptor (S1P) receptors in WT and KIF3A-deficient mouse embryonic fibroblasts that lack primary cilia. We found that activation of SMO in response to Sonic HH (SHH) or purmorphamine (PUR), a small molecule agonist of SMO, stimulates Gi proteins and RHOA independently of the presence of primary cilia, similar to the effects of S1P. However, while S1P induced a fast activation of AKT that is sensitive to the Gi inhibitor pertussis toxin, HH pathway activators did not significantly activate AKT, suggesting that RHOA activation is not downstream of AKT. Our findings demonstrate that early events in some forms of non-canonical HH signaling occur in extraciliary membranes, which might be particularly relevant for actively-cycling cells, for some cancers characterized by loss of primary cilia, and in ciliopathies.
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Affiliation(s)
- Lan Ho Wei
- Department of Biochemistry and Molecular Biology, Thomas Jefferson University, Philadelphia, Pennsylvania, United States of America
| | - Mohammad Arastoo
- Leeds Institute of Cancer and Pathology, University of Leeds, Leeds, United Kingdom
| | - Ioanna Georgiou
- Leeds Institute of Cancer and Pathology, University of Leeds, Leeds, United Kingdom
| | - David R. Manning
- Department of Systems Pharmacology and Translational Therapeutics, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Natalia A. Riobo-Del Galdo
- Leeds Institute of Cancer and Pathology, University of Leeds, Leeds, United Kingdom
- School of Molecular and Cellular Biology, University of Leeds, Leeds, United Kingdom
- * E-mail:
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39
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Liu H, Jin H, Yue X, Han J, Baum P, Abendschein DR, Tu Z. PET Study of Sphingosine-1-Phosphate Receptor 1 Expression in Response to Vascular Inflammation in a Rat Model of Carotid Injury. Mol Imaging 2018; 16:1536012116689770. [PMID: 28654378 PMCID: PMC5470136 DOI: 10.1177/1536012116689770] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Sphingosine-1-phosphate receptor (S1PR) activation plays a key role in vascular inflammatory response. Here, we report in vivo validation of [11C]TZ3321, a potent S1PR1 radioligand, for imaging vascular inflammation in a rat model of carotid injury. The right common carotid artery of male adult Sprague-Dawley rats was injured by balloon overinflation that denuded the endothelium and distended the vessel wall. Animals received a 60-minute micro-positron emission tomography (micro PET) scan with [11C]TZ3321 at 72 hours after injury. Ex vivo autoradiography was also conducted. The expression and cellular location of S1PR1 were examined by immunohistological analysis. Three-dimensional (3D) reconstruction of the first 100-second microPET/computed tomography (CT) image indicated the location of bilateral common carotid arteries. [11C]TZ3321 displayed significantly higher accumulation (standardized uptake values: 0.93 ± 0.07 vs 0.78 ± 0.09, n = 6, P = .001) in the injured carotid artery than in the contralateral side. Increased tracer uptake in the injured artery was confirmed by autoradiography (photostimulated luminescence measures: 85.5 ± 0.93 vs 71.48 ± 6.22, n = 2). Concordantly, high S1PR1expression was observed in infiltrated inflammatory cells in the injured artery. Our studies demonstrate [11C]TZ3321 microPET is able to detect the acute upregulation of S1PR1 expression in inflamed carotid artery. Therefore, [11C]TZ3321 has potential to be a PET radiotracer for detecting early inflammatory response and monitoring therapeutic efficacy of vascular inflammation.
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Affiliation(s)
- Hui Liu
- 1 Department of Radiology, Washington University School of Medicine, St Louis, MO, USA
| | - Hongjun Jin
- 1 Department of Radiology, Washington University School of Medicine, St Louis, MO, USA
| | - Xuyi Yue
- 1 Department of Radiology, Washington University School of Medicine, St Louis, MO, USA
| | - Junbin Han
- 1 Department of Radiology, Washington University School of Medicine, St Louis, MO, USA
| | - Pamela Baum
- 2 Center for Cardiovascular Research, Department of Internal Medicine, Washington University School of Medicine, St Louis, MO, USA
| | - Dana R Abendschein
- 2 Center for Cardiovascular Research, Department of Internal Medicine, Washington University School of Medicine, St Louis, MO, USA
| | - Zhude Tu
- 1 Department of Radiology, Washington University School of Medicine, St Louis, MO, USA
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40
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Jékely G, Melzer S, Beets I, Kadow ICG, Koene J, Haddad S, Holden-Dye L. The long and the short of it - a perspective on peptidergic regulation of circuits and behaviour. J Exp Biol 2018; 221:jeb166710. [PMID: 29439060 DOI: 10.1242/jeb.166710] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Neuropeptides are the most diverse class of chemical modulators in nervous systems. They contribute to extensive modulation of circuit activity and have profound influences on animal physiology. Studies on invertebrate model organisms, including the fruit fly Drosophila melanogaster and the nematode Caenorhabditis elegans, have enabled the genetic manipulation of peptidergic signalling, contributing to an understanding of how neuropeptides pattern the output of neural circuits to underpin behavioural adaptation. Electrophysiological and pharmacological analyses of well-defined microcircuits, such as the crustacean stomatogastric ganglion, have provided detailed insights into neuropeptide functions at a cellular and circuit level. These approaches can be increasingly applied in the mammalian brain by focusing on circuits with a defined and identifiable sub-population of neurons. Functional analyses of neuropeptide systems have been underpinned by systematic studies to map peptidergic networks. Here, we review the general principles and mechanistic insights that have emerged from these studies. We also highlight some of the challenges that remain for furthering our understanding of the functional relevance of peptidergic modulation.
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Affiliation(s)
- Gáspár Jékely
- Living Systems Institute, University of Exeter, Stocker Road, Exeter, EX4 4QD, UK
| | - Sarah Melzer
- Howard Hughes Medical Institute, Department of Neurobiology, 200 Longwood Avenue, Boston, MA 02115, USA
| | - Isabel Beets
- MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge, CB2 0QH, UK
| | - Ilona C Grunwald Kadow
- Technical University of Munich, TUM School of Life Sciences, ZIEL - Institute for Food and Health, 85354 Freising, Germany
| | - Joris Koene
- Vrije Universiteit - Ecological Science, De Boelelaan 1085, 1081 HV Amsterdam, The Netherlands
| | - Sara Haddad
- Volen Center for Complex Systems, Brandeis University, Mailstop 013, 415 South Street, Waltham, MA 02454, USA
| | - Lindy Holden-Dye
- Biological Sciences, Highfield Campus, University of Southampton, Southampton, SO17 1BJ, UK
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41
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Camerer E. Endotoxemia rocks sphingolipid metabolism at the blood-brain barrier: An Editorial Highlight for 'Alteration of sphingolipid metabolism as a putative mechanism underlying LPS-induced BBB disruption' on page 172. J Neurochem 2017; 144:115-117. [PMID: 29285771 DOI: 10.1111/jnc.14246] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 10/18/2017] [Indexed: 11/28/2022]
Abstract
In this issue of the Journal of Neurochemistry, Vutukuri et al. evaluate the impact of endotoxemia-induced encephalopathy on the sphingosine-1-phosphate (S1P) signaling pathway at the blood-brain barrier (BBB). Four hours after intraperitoneal administration of lipopolysaccharides (LPS, 4 mg/kg) to mice, they first demonstrate BBB dysfunction and then evaluate changes in sphingolipid metabolites in serum, isolated brain microvessels (MBMV), and whole brain. In parallel, they investigate the fate of indicated S1P generating and metabolizing enzymes and S1P receptors in brain and MBMV. S1P levels decreased in serum and brain and a similar tendency was observed in MBMV. Sphk2 expression was strongly reduced in MBMV together with an up-regulation of lipid phosphate and S1P phosphatases, resulting in a net decrease in S1P levels despite a compensatory increase in Sphk1 expression. The implications of disturbed sphingolipid metabolism for the pathogenesis of septic encephalopathy will depend on the net impact of these changes on S1P receptor signaling at the BBB and the importance of the S1P pathway in regulating vascular homeostasis in this context.
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Affiliation(s)
- Eric Camerer
- INSERM U970, Paris Cardiovascular Research Center, Paris, France.,Université Paris-Descartes, Paris, France
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42
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Kono M, Conlon EG, Lux SY, Yanagida K, Hla T, Proia RL. Bioluminescence imaging of G protein-coupled receptor activation in living mice. Nat Commun 2017; 8:1163. [PMID: 29079828 PMCID: PMC5660082 DOI: 10.1038/s41467-017-01340-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 09/06/2017] [Indexed: 01/04/2023] Open
Abstract
G protein-coupled receptors (GPCRs), a superfamily of cell-surface receptors involved in virtually all physiological processes, are the major target class for approved drugs. Imaging GPCR activation in real time in living animals would provide a powerful way to study their role in biology and disease. Here, we describe a mouse model that enables the bioluminescent detection of GPCR activation in real time by utilizing the clinically important GPCR, sphingosine-1-phosphate receptor 1 (S1P1). A synthetic S1P1 signaling pathway, designed to report the interaction between S1P1 and β-arrestin2 via the firefly split luciferase fragment complementation system, is genetically encoded in these mice. Upon receptor activation and subsequent β-arrestin2 recruitment, an active luciferase enzyme complex is produced, which can be detected by in vivo bioluminescence imaging. This imaging strategy reveals the dynamics and spatial specificity of S1P1 activation in normal and pathophysiologic contexts in vivo and can be applied to other GPCRs. G protein-coupled receptors are involved in numerous physiological functions, thus, they represent potential pharmaceutical targets. Here Kono et al. describe a new mouse model to image GPCR activation in real-time by exploiting firefly split luciferase fragment complementation that can be detected by bioluminescence imaging.
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Affiliation(s)
- Mari Kono
- Genetics of Development and Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, NIH, Bethesda, MD, 20892, USA
| | - Elizabeth G Conlon
- Genetics of Development and Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, NIH, Bethesda, MD, 20892, USA
| | - Samantha Y Lux
- Genetics of Development and Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, NIH, Bethesda, MD, 20892, USA
| | - Keisuke Yanagida
- Vascular Biology Program, Boston Children's Hospital, Department of Surgery, Harvard Medical School, Boston, MA, 02115, USA
| | - Timothy Hla
- Vascular Biology Program, Boston Children's Hospital, Department of Surgery, Harvard Medical School, Boston, MA, 02115, USA
| | - Richard L Proia
- Genetics of Development and Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, NIH, Bethesda, MD, 20892, USA.
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43
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Swendeman SL, Xiong Y, Cantalupo A, Yuan H, Burg N, Hisano Y, Cartier A, Liu CH, Engelbrecht E, Blaho V, Zhang Y, Yanagida K, Galvani S, Obinata H, Salmon JE, Sanchez T, Di Lorenzo A, Hla T. An engineered S1P chaperone attenuates hypertension and ischemic injury. Sci Signal 2017; 10:10/492/eaal2722. [PMID: 28811382 DOI: 10.1126/scisignal.aal2722] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Endothelial dysfunction, a hallmark of vascular disease, is restored by plasma high-density lipoprotein (HDL). However, a generalized increase in HDL abundance is not beneficial, suggesting that specific HDL species mediate protective effects. Apolipoprotein M-containing HDL (ApoM+HDL), which carries the bioactive lipid sphingosine 1-phosphate (S1P), promotes endothelial function by activating G protein-coupled S1P receptors. Moreover, HDL-bound S1P is limiting in several inflammatory, metabolic, and vascular diseases. We report the development of a soluble carrier for S1P, ApoM-Fc, which activated S1P receptors in a sustained manner and promoted endothelial function. In contrast, ApoM-Fc did not modulate circulating lymphocyte numbers, suggesting that it specifically activated endothelial S1P receptors. ApoM-Fc administration reduced blood pressure in hypertensive mice, attenuated myocardial damage after ischemia/reperfusion injury, and reduced brain infarct volume in the middle cerebral artery occlusion model of stroke. Our proof-of-concept study suggests that selective and sustained targeting of endothelial S1P receptors by ApoM-Fc could be a viable therapeutic strategy in vascular diseases.
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Affiliation(s)
- Steven L Swendeman
- Vascular Biology Program, Boston Children's Hospital, Boston, MA 02115, USA.,Department of Surgery, Harvard Medical School, Boston, MA 02115, USA
| | - Yuquan Xiong
- Vascular Biology Program, Boston Children's Hospital, Boston, MA 02115, USA.,Department of Surgery, Harvard Medical School, Boston, MA 02115, USA
| | - Anna Cantalupo
- Center for Vascular Biology, Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, Cornell University, New York, NY 10065, USA
| | - Hui Yuan
- Vascular Biology Program, Boston Children's Hospital, Boston, MA 02115, USA.,Department of Surgery, Harvard Medical School, Boston, MA 02115, USA
| | - Nathalie Burg
- Center for Vascular Biology, Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, Cornell University, New York, NY 10065, USA.,Hospital for Special Surgery, New York, NY 10021, USA
| | - Yu Hisano
- Vascular Biology Program, Boston Children's Hospital, Boston, MA 02115, USA.,Department of Surgery, Harvard Medical School, Boston, MA 02115, USA
| | - Andreane Cartier
- Vascular Biology Program, Boston Children's Hospital, Boston, MA 02115, USA.,Department of Surgery, Harvard Medical School, Boston, MA 02115, USA
| | - Catherine H Liu
- Center for Vascular Biology, Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, Cornell University, New York, NY 10065, USA
| | - Eric Engelbrecht
- Vascular Biology Program, Boston Children's Hospital, Boston, MA 02115, USA.,Department of Surgery, Harvard Medical School, Boston, MA 02115, USA
| | - Victoria Blaho
- Center for Vascular Biology, Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, Cornell University, New York, NY 10065, USA
| | - Yi Zhang
- Center for Vascular Biology, Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, Cornell University, New York, NY 10065, USA
| | - Keisuke Yanagida
- Vascular Biology Program, Boston Children's Hospital, Boston, MA 02115, USA.,Department of Surgery, Harvard Medical School, Boston, MA 02115, USA
| | - Sylvain Galvani
- Vascular Biology Program, Boston Children's Hospital, Boston, MA 02115, USA.,Department of Surgery, Harvard Medical School, Boston, MA 02115, USA
| | - Hideru Obinata
- Gunma University Initiative for Advanced Research, Gunma 371-8511, Japan
| | - Jane E Salmon
- Hospital for Special Surgery, New York, NY 10021, USA
| | - Teresa Sanchez
- Center for Vascular Biology, Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, Cornell University, New York, NY 10065, USA
| | - Annarita Di Lorenzo
- Center for Vascular Biology, Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, Cornell University, New York, NY 10065, USA
| | - Timothy Hla
- Vascular Biology Program, Boston Children's Hospital, Boston, MA 02115, USA. .,Department of Surgery, Harvard Medical School, Boston, MA 02115, USA.,Center for Vascular Biology, Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, Cornell University, New York, NY 10065, USA
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44
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Temporally precise labeling and control of neuromodulatory circuits in the mammalian brain. Nat Methods 2017; 14:495-503. [PMID: 28369042 DOI: 10.1038/nmeth.4234] [Citation(s) in RCA: 104] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Accepted: 02/18/2017] [Indexed: 11/08/2022]
Abstract
Few tools exist to visualize and manipulate neurons that are targets of neuromodulators. We present iTango, a light- and ligand-gated gene expression system based on a light-inducible split tobacco etch virus protease. Cells expressing the iTango system exhibit increased expression of a marker gene in the presence of dopamine and blue-light exposure, both in vitro and in vivo. We demonstrated the iTango system in a behaviorally relevant context, by inducing expression of optogenetic tools in neurons under dopaminergic control during a behavior of interest. We thereby gained optogenetic control of these behaviorally relevant neurons. We applied the iTango system to decipher the roles of two classes of dopaminergic neurons in the mouse nucleus accumbens in a sensitized locomotor response to cocaine. Thus, the iTango platform allows for control of neuromodulatory circuits in a genetically and functionally defined manner with spatial and temporal precision.
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McCracken AN, McMonigle RJ, Tessier J, Fransson R, Perryman MS, Chen B, Keebaugh A, Selwan E, Barr SA, Kim SM, Roy SG, Liu G, Fallegger D, Sernissi L, Brandt C, Moitessier N, Snider AJ, Clare S, Müschen M, Huwiler A, Kleinman MT, Hanessian S, Edinger AL. Phosphorylation of a constrained azacyclic FTY720 analog enhances anti-leukemic activity without inducing S1P receptor activation. Leukemia 2017; 31:669-677. [PMID: 27573555 PMCID: PMC5332311 DOI: 10.1038/leu.2016.244] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 07/19/2016] [Accepted: 08/22/2016] [Indexed: 02/07/2023]
Abstract
The frequency of poor outcomes in relapsed leukemia patients underscores the need for novel therapeutic approaches. The Food and Drug Administration-approved immunosuppressant FTY720 limits leukemia progression by activating protein phosphatase 2A and restricting nutrient access. Unfortunately, FTY720 cannot be re-purposed for use in cancer patients due to on-target toxicity associated with S1P receptor activation at the elevated, anti-neoplastic dose. Here we show that the constrained azacyclic FTY720 analog SH-RF-177 lacks S1P receptor activity but maintains anti-leukemic activity in vitro and in vivo. SH-RF-177 was not only more potent than FTY720, but killed via a distinct mechanism. Phosphorylation is dispensable for FTY720's anti-leukemic actions. However, chemical biology and genetic approaches demonstrated that the sphingosine kinase 2 (SPHK2)-mediated phosphorylation of SH-RF-177 led to engagement of a pro-apoptotic target and increased potency. The cytotoxicity of membrane-permeant FTY720 phosphonate esters suggests that the enhanced potency of SH-RF-177 stems from its more efficient phosphorylation. The tight inverse correlation between SH-RF-177 IC50 and SPHK2 mRNA expression suggests a useful biomarker for SH-RF-177 sensitivity. In summary, these studies indicate that FTY720 analogs that are efficiently phosphorylated but fail to activate S1P receptors may be superior anti-leukemic agents compared to compounds that avoid cardiotoxicity by eliminating phosphorylation.
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Affiliation(s)
- Alison N. McCracken
- Department of Developmental and Cell Biology, University of California, Irvine CA 92697
| | - Ryan J. McMonigle
- Department of Developmental and Cell Biology, University of California, Irvine CA 92697
| | - Jérémie Tessier
- Department of Chemistry, Université de Montréal, Quebec, Canada H3C 3J7
| | - Rebecca Fransson
- Department of Chemistry, Université de Montréal, Quebec, Canada H3C 3J7
| | | | - Bin Chen
- Department of Chemistry, Université de Montréal, Quebec, Canada H3C 3J7
| | - Andrew Keebaugh
- School of Medicine, University of California, Irvine, CA 92697
| | - Elizabeth Selwan
- Department of Developmental and Cell Biology, University of California, Irvine CA 92697
| | - Sarah A. Barr
- Department of Developmental and Cell Biology, University of California, Irvine CA 92697
| | - Seong M. Kim
- Department of Developmental and Cell Biology, University of California, Irvine CA 92697
| | - Saurabh G. Roy
- Department of Developmental and Cell Biology, University of California, Irvine CA 92697
| | - Gang Liu
- Department of Developmental and Cell Biology, University of California, Irvine CA 92697
| | - Daniel Fallegger
- Institute of Pharmacology, University of Bern, Bern, Switzerland
| | - Lorenzo Sernissi
- Department of Chemistry, Université de Montréal, Quebec, Canada H3C 3J7
| | - Cordelia Brandt
- The Wellcome Trust Sanger Genome Campus, Wellcome Trust Sanger Institute, Hinxton, Cambridge, CB10 1SA, United Kingdom
| | - Nicolas Moitessier
- Department of Chemistry, McGill University, Montréal, Québec, Canada H3A 0B8
| | - Ashley J. Snider
- Cancer Center and Department of Medicine, Stony Brook University, Stony Brook, NY11794
- Northport Veterans Affairs Medical Center, Northport, NY 11768
| | - Simon Clare
- The Wellcome Trust Sanger Genome Campus, Wellcome Trust Sanger Institute, Hinxton, Cambridge, CB10 1SA, United Kingdom
| | - Markus Müschen
- Department of Laboratory Medicine, University of California, San Francisco, CA 94143
| | - Andrea Huwiler
- Institute of Pharmacology, University of Bern, Bern, Switzerland
| | | | - Stephen Hanessian
- Department of Chemistry, Université de Montréal, Quebec, Canada H3C 3J7
- Department of Pharmaceutical Sciences, University of California Irvine, Irvine CA 92697
| | - Aimee L. Edinger
- Department of Developmental and Cell Biology, University of California, Irvine CA 92697
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St-Cyr Giguère F, Attiori Essis S, Chagniel L, Germain M, Cyr M, Massicotte G. The sphingosine-1-phosphate receptor 1 agonist SEW2871 reduces Tau-Ser262 phosphorylation in rat hippocampal slices. Brain Res 2017; 1658:51-59. [DOI: 10.1016/j.brainres.2017.01.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 01/10/2017] [Accepted: 01/12/2017] [Indexed: 12/13/2022]
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Mauer AS, Hirsova P, Maiers JL, Shah VH, Malhi H. Inhibition of sphingosine 1-phosphate signaling ameliorates murine nonalcoholic steatohepatitis. Am J Physiol Gastrointest Liver Physiol 2017; 312:G300-G313. [PMID: 28039158 PMCID: PMC5401989 DOI: 10.1152/ajpgi.00222.2016] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 11/28/2016] [Accepted: 12/11/2016] [Indexed: 01/31/2023]
Abstract
Nonalcoholic steatohepatitis (NASH) is a lipotoxic disorder, wherein proinflammatory lipids, such as ceramide and its derivative sphingosine 1-phosphate (S1P), contribute to macrophage-associated liver inflammation. For example, we have previously demonstrated a role for S1P in steatotic hepatocyte-derived S1P-enriched extracellular vesicles in macrophage chemotaxis in vitro. Therefore, we hypothesized that FTY720, an S1P antagonist, would ameliorate NASH by inhibiting proinflammatory monocyte chemotaxis. To test our hypothesis, NASH was established in C57BL/6 male mice by feeding a diet high in fructose, saturated fat, and cholesterol for 22 wk. Then mice received daily intraperitoneal injections of FTY720 for 2 wk before analysis of liver injury, inflammation, and fibrosis. FTY720-treated mice with NASH demonstrated improved liver histology with a significant reduction in hepatocyte ballooning and inflammatory foci. Hepatomegaly was reversed, and liver triglycerides were reduced following FTY720 administration to mice with NASH. Correspondingly, serum ALT levels, hepatic inflammatory macrophage accumulation, and the expression of Ly6C in recruited myeloid cells was reduced in FTY720-treated mice. Hepatic collagen accumulation and expression of α-smooth muscle actin were significantly lowered as well. Body composition, energy consumption and utilization, and hepatic sphingolipid composition remained unchanged following FTY720 administration. FTY720 ameliorates murine nonalcoholic steatohepatitis. Reduction in liver injury and inflammation is associated with a reduction in hepatic macrophage accumulation, likely due to dampened recruitment of circulating myeloid cells into the liver. Nonalcoholic steatohepatitis may be a novel indication for the therapeutic use of FTY720.NEW & NOTEWORTHY There are no approved pharmacologic therapies for nonalcoholic steatohepatitis (NASH), the leading cause of chronic liver disease worldwide. This study describes the use of FTY720, a novel small molecule, for the amelioration of NASH in a mouse model. We demonstrate that 2-wk administration of FTY720 to mice with NASH led to a reduction in liver injury, inflammation, and fibrosis. These data provide a preclinical rationale for studying this drug in human NASH.
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Affiliation(s)
- Amy S Mauer
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Petra Hirsova
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Jessica L Maiers
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Vijay H Shah
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Harmeet Malhi
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
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Pyne NJ, Pyne S. Sphingosine 1-Phosphate Receptor 1 Signaling in Mammalian Cells. Molecules 2017; 22:molecules22030344. [PMID: 28241498 PMCID: PMC6155263 DOI: 10.3390/molecules22030344] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Revised: 02/15/2017] [Accepted: 02/18/2017] [Indexed: 12/16/2022] Open
Abstract
The bioactive lipid, sphingosine 1-phosphate (S1P) binds to a family of G protein-coupled receptors, termed S1P1-S1P5. These receptors function in, for example, the cardiovascular system to regulate vascular barrier integrity and tone, the nervous system to regulate neuronal differentiation, myelination and oligodendrocyte/glial cell survival and the immune system to regulate T- and B-cell subsets and trafficking. S1P receptors also participate in the pathophysiology of autoimmunity, inflammatory disease, cancer, neurodegeneration and others. In this review, we describe how S1P1 can form a complex with G-protein and β-arrestin, which function together to regulate effector pathways. We also discuss the role of the S1P1-Platelet derived growth factor receptor β functional complex (which deploys G-protein/β-arrestin and receptor tyrosine kinase signaling) in regulating cell migration. Possible mechanisms by which different S1P-chaperones, such as Apolipoprotein M-High-Density Lipoprotein induce biological programmes in cells are also described. Finally, the role of S1P1 in health and disease and as a target for clinical intervention is appraised.
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Affiliation(s)
- Nigel J Pyne
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow G4 0RE, UK.
| | - Susan Pyne
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow G4 0RE, UK.
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TAKEDA A, SASAKI N, MIYASAKA M. The molecular cues regulating immune cell trafficking. PROCEEDINGS OF THE JAPAN ACADEMY. SERIES B, PHYSICAL AND BIOLOGICAL SCIENCES 2017; 93:183-195. [PMID: 28413196 PMCID: PMC5489428 DOI: 10.2183/pjab.93.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2016] [Accepted: 01/26/2017] [Indexed: 05/28/2023]
Abstract
Lymphocyte recirculation between the blood and the lymphoid/non-lymphoid tissues is an essential homeostatic mechanism that regulates humoral and cellular immune responses in vivo. This system promotes the encounter of naïve T and B cells with their specific cognate antigen presented by dendritic cells, and with the regulatory cells with which they need to interact to initiate, maintain, and terminate immune responses. The constitutive lymphocyte trafficking is mediated by particular types of blood vessels, including the high endothelial venules (HEVs) in lymph nodes and Peyer's patches, and the flat-walled venules in non-lymphoid tissues including the skin. The lymphocyte migration across HEVs involves tethering/rolling, arrest/firm adhesion/intraluminal crawling, and transendothelial migration. On the other hand, relatively little is known about how lymphocytes and other types of cells migrate across the venules of non-lymphoid tissues. Here we summarize recent findings about the molecular mechanisms that govern immune cell trafficking, including the roles of chemokines and lysophospholipids in regulating immune cell motility and endothelial permeability.
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Affiliation(s)
- Akira TAKEDA
- MediCity Research Laboratory, University of Turku, Turku, Finland
| | - Naoko SASAKI
- Department of Microbiology and Immunology, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Masayuki MIYASAKA
- MediCity Research Laboratory, University of Turku, Turku, Finland
- Interdisciplinary Program for Biomedical Sciences, Institute of Academic Initiatives, Osaka University, Suita, Japan
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50
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Ding BS, Liu CH, Sun Y, Chen Y, Swendeman SL, Jung B, Chavez D, Cao Z, Christoffersen C, Nielsen LB, Schwab SR, Rafii S, Hla T. HDL activation of endothelial sphingosine-1-phosphate receptor-1 (S1P 1) promotes regeneration and suppresses fibrosis in the liver. JCI Insight 2016; 1:e87058. [PMID: 28018969 PMCID: PMC5161208 DOI: 10.1172/jci.insight.87058] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Regeneration of hepatic sinusoidal vasculature is essential for non-fibrotic liver regrowth and restoration of its metabolic capacity. However, little is known about how this specialized vascular niche is regenerated. Here we show that activation of endothelial sphingosine-1-phosphate receptor-1 (S1P1) by its natural ligand bound to HDL (HDL-S1P) induces liver regeneration and curtails fibrosis. In mice lacking HDL-S1P, liver regeneration after partial hepatectomy was impeded and associated with aberrant vascular remodeling, thrombosis and peri-sinusoidal fibrosis. Notably, this "maladaptive repair" phenotype was recapitulated in mice that lack S1P1 in the endothelium. Reciprocally, enhanced plasma levels of HDL-S1P or administration of SEW2871, a pharmacological agonist specific for S1P1 enhanced regeneration of metabolically functional vasculature and alleviated fibrosis in mouse chronic injury and cholestasis models. This study shows that natural and pharmacological ligands modulate endothelial S1P1 to stimulate liver regeneration and inhibit fibrosis, suggesting that activation of this pathway may be a novel therapeutic strategy for liver fibrosis.
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Affiliation(s)
- Bi-Sen Ding
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, State Key Laboratory of Biotherapy, West China Second University Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, China.,Ansary Stem Cell Institute, Division of Regenerative Medicine, Department of Medicine, Weill Cornell Medicine, New York, New York, USA
| | - Catherine H Liu
- Center for Vascular Biology, Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, Cornell University, New York, New York, USA
| | - Yue Sun
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, State Key Laboratory of Biotherapy, West China Second University Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, China
| | - Yutian Chen
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, State Key Laboratory of Biotherapy, West China Second University Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, China
| | - Steven L Swendeman
- Center for Vascular Biology, Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, Cornell University, New York, New York, USA.,Vascular Biology Program, Boston Children's Hospital, Department of Surgery, Harvard Medical School, Boston, Massachusetts, USA
| | - Bongnam Jung
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Deebly Chavez
- Ansary Stem Cell Institute, Division of Regenerative Medicine, Department of Medicine, Weill Cornell Medicine, New York, New York, USA
| | - Zhongwei Cao
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, State Key Laboratory of Biotherapy, West China Second University Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, China.,Ansary Stem Cell Institute, Division of Regenerative Medicine, Department of Medicine, Weill Cornell Medicine, New York, New York, USA
| | - Christina Christoffersen
- Department of Clinical Biochemistry, Rigshospitalet, Copenhagen, Denmark.,Department of Biomedical Sciences
| | - Lars Bo Nielsen
- Department of Clinical Biochemistry, Rigshospitalet, Copenhagen, Denmark.,Department of Biomedical Sciences.,Department of Clinical Medicine, University of Copenhagen, Denmark
| | - Susan R Schwab
- Department of Pathology, Skirball Institute, New York University School of Medicine, New York, New York, USA
| | - Shahin Rafii
- Ansary Stem Cell Institute, Division of Regenerative Medicine, Department of Medicine, Weill Cornell Medicine, New York, New York, USA
| | - Timothy Hla
- Center for Vascular Biology, Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, Cornell University, New York, New York, USA.,Vascular Biology Program, Boston Children's Hospital, Department of Surgery, Harvard Medical School, Boston, Massachusetts, USA
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