1
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Thach B, Samarajeewa N, Li Y, Heng S, Tsai T, Pangestu M, Catt S, Nie G. Podocalyxin molecular characteristics and endometrial expression: high conservation between humans and macaques but divergence in mice†. Biol Reprod 2022; 106:1143-1158. [PMID: 35284933 DOI: 10.1093/biolre/ioac053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Revised: 01/31/2022] [Accepted: 03/03/2022] [Indexed: 11/14/2022] Open
Abstract
Podocalyxin (PODXL) is a newly identified key negative regulator of human endometrial receptivity, specifically down-regulated in the luminal epithelium at receptivity to permit embryo implantation. Here, we bioinformatically compared the molecular characteristics of PODXL among the human, rhesus macaque and mouse, determined by immunohistochemistry and in situ hybridization (mouse tissues) whether endometrial PODXL expression is conserved across the three species, and examined if PODXL inhibits mouse embryo attachment in vitro. The PODXL gene, mRNA and protein sequences showed greater similarities between humans and macaques than with mice. In all species, PODXL was expressed in endometrial luminal/glandular epithelia and endothelia. In macaques (n = 9), luminal PODXL was significantly down-regulated when receptivity is developed, consistent with the pattern found in women. At receptivity PODXL was also reduced in shallow glands, whereas endothelial expression was unchanged across the menstrual cycle. In mice, endometrial PODXL did not vary considerably across the estrous cycle (n = 16); however, around embryo attachment on d4.5 of pregnancy (n = 4), luminal PODXL was greatly reduced especially near the site of embryo attachment. Mouse embryos failed to attach or thrive when co-cultured on a monolayer of Ishikawa cells overexpressing PODXL. Thus, endometrial luminal PODXL expression is down-regulated for embryo implantation in all species examined, and PODXL inhibits mouse embryo implantation. Rhesus macaques share greater conservations with humans than mice in PODXL molecular characteristics and regulation, thus represent a better animal model for functional studies of endometrial PODXL for treatment of human fertility.
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Affiliation(s)
- Bothidah Thach
- Implantation and Pregnancy Research Laboratory, School of Health and Biomedical Sciences, RMIT University, Bundoora, Victoria, 3083, Australia.,Department of Molecular and Translational Science, Monash University, Clayton, Victoria, 3800, Australia.,Hudson Institute of Medical Research, Clayton, Victoria, 3168, Australia
| | - Nirukshi Samarajeewa
- Implantation and Pregnancy Research Laboratory, School of Health and Biomedical Sciences, RMIT University, Bundoora, Victoria, 3083, Australia
| | - Ying Li
- Implantation and Pregnancy Research Laboratory, School of Health and Biomedical Sciences, RMIT University, Bundoora, Victoria, 3083, Australia
| | - Sophea Heng
- Implantation and Pregnancy Research Laboratory, School of Health and Biomedical Sciences, RMIT University, Bundoora, Victoria, 3083, Australia
| | - Tesha Tsai
- Implantation and Pregnancy Research Laboratory, School of Health and Biomedical Sciences, RMIT University, Bundoora, Victoria, 3083, Australia
| | - Mulyoto Pangestu
- Department of Obstetrics and Gynaecology, Monash University, Clayton, Victoria, 3800, Australia
| | - Sally Catt
- Department of Obstetrics and Gynaecology, Monash University, Clayton, Victoria, 3800, Australia
| | - Guiying Nie
- Implantation and Pregnancy Research Laboratory, School of Health and Biomedical Sciences, RMIT University, Bundoora, Victoria, 3083, Australia.,Department of Molecular and Translational Science, Monash University, Clayton, Victoria, 3800, Australia.,Hudson Institute of Medical Research, Clayton, Victoria, 3168, Australia
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2
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Kirst C, Skriabine S, Vieites-Prado A, Topilko T, Bertin P, Gerschenfeld G, Verny F, Topilko P, Michalski N, Tessier-Lavigne M, Renier N. Mapping the Fine-Scale Organization and Plasticity of the Brain Vasculature. Cell 2020; 180:780-795.e25. [PMID: 32059781 DOI: 10.1016/j.cell.2020.01.028] [Citation(s) in RCA: 189] [Impact Index Per Article: 47.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 11/20/2019] [Accepted: 01/21/2020] [Indexed: 02/06/2023]
Abstract
The cerebral vasculature is a dense network of arteries, capillaries, and veins. Quantifying variations of the vascular organization across individuals, brain regions, or disease models is challenging. We used immunolabeling and tissue clearing to image the vascular network of adult mouse brains and developed a pipeline to segment terabyte-sized multichannel images from light sheet microscopy, enabling the construction, analysis, and visualization of vascular graphs composed of over 100 million vessel segments. We generated datasets from over 20 mouse brains, with labeled arteries, veins, and capillaries according to their anatomical regions. We characterized the organization of the vascular network across brain regions, highlighting local adaptations and functional correlates. We propose a classification of cortical regions based on the vascular topology. Finally, we analysed brain-wide rearrangements of the vasculature in animal models of congenital deafness and ischemic stroke, revealing that vascular plasticity and remodeling adopt diverging rules in different models.
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Affiliation(s)
- Christoph Kirst
- Laboratoire de Plasticité Structurale, Sorbonne Université, ICM Institut du Cerveau et de la Moelle Epinière, INSERM U1127, CNRS UMR7225, 75013 Paris, France; Center for Physics and Biology and Kavli Neural Systems Insittute, The Rockefeller University, 10065 New York, NY, USA; Kavli Institute for Fundamental Neuroscience and Anatomy Department, Sandler Neuroscience Building, Suite 514G, 675 Nelson Rising Lane, University of California, San Francisco, San Francisco, CA 94158, USA.
| | - Sophie Skriabine
- Laboratoire de Plasticité Structurale, Sorbonne Université, ICM Institut du Cerveau et de la Moelle Epinière, INSERM U1127, CNRS UMR7225, 75013 Paris, France
| | - Alba Vieites-Prado
- Laboratoire de Plasticité Structurale, Sorbonne Université, ICM Institut du Cerveau et de la Moelle Epinière, INSERM U1127, CNRS UMR7225, 75013 Paris, France
| | - Thomas Topilko
- Laboratoire de Plasticité Structurale, Sorbonne Université, ICM Institut du Cerveau et de la Moelle Epinière, INSERM U1127, CNRS UMR7225, 75013 Paris, France
| | - Paul Bertin
- Laboratoire de Plasticité Structurale, Sorbonne Université, ICM Institut du Cerveau et de la Moelle Epinière, INSERM U1127, CNRS UMR7225, 75013 Paris, France
| | | | - Florine Verny
- Laboratoire de Plasticité Structurale, Sorbonne Université, ICM Institut du Cerveau et de la Moelle Epinière, INSERM U1127, CNRS UMR7225, 75013 Paris, France
| | - Piotr Topilko
- Institut Mondor de Recherche Biomédicale, INSERM U955-Team 9, Créteil, France
| | - Nicolas Michalski
- Unité de Génétique et Physiologie de l'Audition, UMRS 1120, Institut Pasteur, INSERM, 75015 Paris, France
| | | | - Nicolas Renier
- Laboratoire de Plasticité Structurale, Sorbonne Université, ICM Institut du Cerveau et de la Moelle Epinière, INSERM U1127, CNRS UMR7225, 75013 Paris, France.
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3
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Jacob L, Boisserand LSB, Geraldo LHM, de Brito Neto J, Mathivet T, Antila S, Barka B, Xu Y, Thomas JM, Pestel J, Aigrot MS, Song E, Nurmi H, Lee S, Alitalo K, Renier N, Eichmann A, Thomas JL. Anatomy and function of the vertebral column lymphatic network in mice. Nat Commun 2019; 10:4594. [PMID: 31597914 PMCID: PMC6785564 DOI: 10.1038/s41467-019-12568-w] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 09/11/2019] [Indexed: 12/26/2022] Open
Abstract
Cranial lymphatic vessels (LVs) are involved in the transport of fluids, macromolecules and central nervous system (CNS) immune responses. Little information about spinal LVs is available, because these delicate structures are embedded within vertebral tissues and difficult to visualize using traditional histology. Here we show an extended vertebral column LV network using three-dimensional imaging of decalcified iDISCO+-clarified spine segments. Vertebral LVs connect to peripheral sensory and sympathetic ganglia and form metameric vertebral circuits connecting to lymph nodes and the thoracic duct. They drain the epidural space and the dura mater around the spinal cord and associate with leukocytes. Vertebral LVs remodel extensively after spinal cord injury and VEGF-C-induced vertebral lymphangiogenesis exacerbates the inflammatory responses, T cell infiltration and demyelination following focal spinal cord lesion. Therefore, vertebral LVs add to skull meningeal LVs as gatekeepers of CNS immunity and may be potential targets to improve the maintenance and repair of spinal tissues.
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Affiliation(s)
- Laurent Jacob
- Université Pierre et Marie Curie Paris 06 UMRS1127, Sorbonne Université, Institut du Cerveau et de la Moelle Epinière, Paris, France
| | | | - Luiz Henrique Medeiros Geraldo
- INSERM U970, Paris Cardiovascular Research Center, 56 Rue Leblanc, 75015, Paris, France
- Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Jose de Brito Neto
- Université Pierre et Marie Curie Paris 06 UMRS1127, Sorbonne Université, Institut du Cerveau et de la Moelle Epinière, Paris, France
- Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Thomas Mathivet
- INSERM U970, Paris Cardiovascular Research Center, 56 Rue Leblanc, 75015, Paris, France
| | - Salli Antila
- Wihuri Research Institute and Translational Cancer Medicine Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Besma Barka
- Université Pierre et Marie Curie Paris 06 UMRS1127, Sorbonne Université, Institut du Cerveau et de la Moelle Epinière, Paris, France
| | - Yunling Xu
- INSERM U970, Paris Cardiovascular Research Center, 56 Rue Leblanc, 75015, Paris, France
| | | | - Juliette Pestel
- Université Pierre et Marie Curie Paris 06 UMRS1127, Sorbonne Université, Institut du Cerveau et de la Moelle Epinière, Paris, France
| | - Marie-Stéphane Aigrot
- Université Pierre et Marie Curie Paris 06 UMRS1127, Sorbonne Université, Institut du Cerveau et de la Moelle Epinière, Paris, France
| | - Eric Song
- Department of Immunology, Yale University School of Medicine, New Haven, CT, 06510-3221, USA
| | - Harri Nurmi
- Wihuri Research Institute and Translational Cancer Medicine Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Seyoung Lee
- Department of Neurology, Yale University School of Medicine, New Haven, CT, 06511, USA
| | - Kari Alitalo
- Wihuri Research Institute and Translational Cancer Medicine Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Nicolas Renier
- Université Pierre et Marie Curie Paris 06 UMRS1127, Sorbonne Université, Institut du Cerveau et de la Moelle Epinière, Paris, France
| | - Anne Eichmann
- INSERM U970, Paris Cardiovascular Research Center, 56 Rue Leblanc, 75015, Paris, France
- Cardiovascular Research Center and the Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, CT, 06510-3221, USA
| | - Jean-Leon Thomas
- Université Pierre et Marie Curie Paris 06 UMRS1127, Sorbonne Université, Institut du Cerveau et de la Moelle Epinière, Paris, France.
- Department of Neurology, Yale University School of Medicine, New Haven, CT, 06511, USA.
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4
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Voelker MT, Fichtner F, Kasper M, Kamprad M, Sack U, Kaisers UX, Laudi S. Characterization of a double-hit murine model of acute respiratory distress syndrome. Clin Exp Pharmacol Physiol 2014; 41:844-53. [DOI: 10.1111/1440-1681.12283] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Revised: 06/16/2014] [Accepted: 06/21/2014] [Indexed: 11/27/2022]
Affiliation(s)
- Maria Theresa Voelker
- Department of Anesthesiology and Intensive Care Medicine; University Hospital of Leipzig; Leipzig Germany
| | - Falk Fichtner
- Department of Anesthesiology and Intensive Care Medicine; University Hospital of Leipzig; Leipzig Germany
| | - Michael Kasper
- Institute of Anatomy, Medical Faculty; Dresden University of Technology; Dresden Germany
| | - Manja Kamprad
- Institute of Clinical Immunology; University Hospital of Leipzig; Leipzig Germany
| | - Ulrich Sack
- Institute of Clinical Immunology; University Hospital of Leipzig; Leipzig Germany
| | - Udo X Kaisers
- Department of Anesthesiology and Intensive Care Medicine; University Hospital of Leipzig; Leipzig Germany
| | - Sven Laudi
- Department of Anesthesiology and Intensive Care Medicine; University Hospital of Leipzig; Leipzig Germany
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5
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Oh P, Testa JE, Borgstrom P, Witkiewicz H, Li Y, Schnitzer JE. In vivo proteomic imaging analysis of caveolae reveals pumping system to penetrate solid tumors. Nat Med 2014; 20:1062-8. [PMID: 25129480 DOI: 10.1038/nm.3623] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Accepted: 04/04/2014] [Indexed: 12/13/2022]
Abstract
Technologies are needed to map and image biological barriers in vivo that limit solid tumor delivery and, ultimately, the effectiveness of imaging and therapeutic agents. Here we integrate proteomic and imaging analyses of caveolae at the blood-tumor interface to discover an active transendothelial portal to infiltrate tumors. A post-translationally modified form of annexin A1 (AnnA1) is selectively concentrated in human and rodent tumor caveolae. To follow trafficking, we generated a specific AnnA1 antibody that targets caveolae in the tumor endothelium. Intravital microscopy of caveolae-immunotargeted fluorophores even at low intravenous doses showed rapid and robust pumping across the endothelium to enter mammary, prostate and lung tumors. Within 1 h, the fluorescence signal concentrated throughout tumors to exceed the peak levels in blood. This transvascular pumping required the expression of caveolin 1 and annexin A1. Tumor uptake with other antibodies were >100-fold less. This proteomic imaging strategy reveals a unique target, antibody and caveolae pumping system for solid tumor penetration.
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Affiliation(s)
- Phil Oh
- 1] Proteogenomics Research Institute for Systems Medicine, San Diego, California, USA. [2] Sidney Kimmel Cancer Center, San Diego, California, USA
| | - Jacqueline E Testa
- 1] Proteogenomics Research Institute for Systems Medicine, San Diego, California, USA. [2] Sidney Kimmel Cancer Center, San Diego, California, USA
| | - Per Borgstrom
- 1] Sidney Kimmel Cancer Center, San Diego, California, USA. [2]
| | - Halina Witkiewicz
- 1] Proteogenomics Research Institute for Systems Medicine, San Diego, California, USA. [2] Sidney Kimmel Cancer Center, San Diego, California, USA
| | - Yan Li
- 1] Proteogenomics Research Institute for Systems Medicine, San Diego, California, USA. [2] Sidney Kimmel Cancer Center, San Diego, California, USA
| | - Jan E Schnitzer
- 1] Proteogenomics Research Institute for Systems Medicine, San Diego, California, USA. [2] Sidney Kimmel Cancer Center, San Diego, California, USA
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6
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Expression of caveolin-1 and podocalyxin in rat lungs challenged with 2-kDa macrophage-activating lipopeptide and Flt3L. Cell Tissue Res 2014; 356:207-16. [PMID: 24419512 DOI: 10.1007/s00441-013-1771-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2013] [Accepted: 11/14/2013] [Indexed: 10/25/2022]
Abstract
Caveolin-1 is one of the important regulators of vascular permeability in inflamed lungs. Podocalyxin is a CD34 protein expressed on vascular endothelium and has a role in podocyte development in the kidney. Few data are available on the expression of caveolin-1 and podocalyxin in lungs challenged with Toll-like receptor 2 (TLR2) agonists such as mycoplasma-derived macrophage activating lipopeptide or with immune modulators such as Fms-like tyrosine kinase receptor-3 ligand (Flt3L), which expands dendritic cell populations in the lung. Because of the significance of pathogen-derived molecules that act through TLR2 and of the role of immune modulators in lung physiology, we examine the immunohistochemical expression of caveolin-1 and podocalyxin in lungs from rats challenged with a 2-kDa macrophage-activating lipopeptide (MALP-2) and Flt3L. Normal rat lungs expressed caveolin-1 in alveolar septa, vascular endothelium and airway epithelium, especially along the lateral borders of epithelial cells but not in alveolar macrophages. MALP-2 and Flt3L decreased and increased, respectively, the expression of caveolin-1. Caveolin-1 expression seemed to increase in microvessels in bronchiole-associated lymphoid tissue (BALT) in Flt3L-challenged lungs but not in normal or MALP-2-treated lungs. Podocalyxin was absent in the epithelium and alveolar macrophages but was present in the vasculature of control, Flt3L- and MALP-2-treated rats. Compared with control and MALP-2-treated rats, Flt3L-treated lungs showed greater expression of podocalyxin in BALT vasculature and at the interface of monocytes and the endothelium. These immunohistochemical data describing the altered expression of caveolin-1 and podocalyxin in lungs treated with MALP-2 or Flt3L encourage further mechanistic studies on the role of podocalyxin and caveolin-1 in lung inflammation.
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7
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Konii H, Sato K, Kikuchi S, Okiyama H, Watanabe R, Hasegawa A, Yamamoto K, Itoh F, Hirano T, Watanabe T. Stimulatory Effects of Cardiotrophin 1 on Atherosclerosis. Hypertension 2013; 62:942-50. [DOI: 10.1161/hypertensionaha.113.01653] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Cardiotrophin 1 (CT-1), an interleukin-6 family cytokine, was recently shown to be expressed in the intima of early atherosclerotic lesions in the human carotid artery. CT-1 stimulates proatherogenic molecule expression in human vascular endothelial cells and monocyte migration. However, it has not been reported whether CT-1 accelerates atherosclerosis. This study was performed to examine the stimulatory effects of CT-1 on human macrophage foam cell formation and vascular smooth muscle cell migration and proliferation in vitro, and on the development of atherosclerotic lesions in apolipoprotein E–deficient (ApoE
−/−
) mice in vivo. CT-1 was expressed at high levels in endothelial cells and macrophages in both humans and ApoE
−/−
mice. CT-1 significantly enhanced oxidized low-density lipoprotein–induced foam cell formation associated with increased levels of CD36 and acyl-CoA:cholesterol acyltransferase-1 expression in human monocyte–derived macrophages. CT-1 significantly stimulated the migration, proliferation, and collagen-1 expression in human aortic vascular smooth muscle cells. Four-week infusion of CT-1 into ApoE
−/−
mice significantly accelerated the development of aortic atherosclerotic lesions with increased monocyte/macrophage infiltration, vascular smooth muscle cell proliferation, and collagen-1 content in the aortic wall. Activation of inflammasome, such as apoptosis-associated speck-like protein containing a caspase recruitment domain, nuclear factor κB, and cyclooxygenase-2, was observed in exudate peritoneal macrophages from ApoE
−/−
mice infused with CT-1. Infusion of anti–CT-1–neutralizing antibody alone into ApoE
−/−
mice significantly suppressed monocyte/macrophage infiltration in atherosclerotic lesions. These results indicate that CT-1 accelerates the development of atherosclerotic lesions by stimulating the inflammasome, foam cell formation associated with CD36 and acyl-CoA:cholesterol acyltransferase-1 upregulation in macrophages, and migration, proliferation, and collagen-1 production in vascular smooth muscle cells.
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Affiliation(s)
- Hanae Konii
- From the Laboratory of Cardiovascular Medicine, Tokyo University of Pharmacy and Life Sciences, Japan (H.K., K.S., S.K., H.O., R.W., A.H., K.Y., F.I., T.W.); and Division of Diabetes, Metabolism, and Endocrinology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan (T.H.)
| | - Kengo Sato
- From the Laboratory of Cardiovascular Medicine, Tokyo University of Pharmacy and Life Sciences, Japan (H.K., K.S., S.K., H.O., R.W., A.H., K.Y., F.I., T.W.); and Division of Diabetes, Metabolism, and Endocrinology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan (T.H.)
| | - Sayaka Kikuchi
- From the Laboratory of Cardiovascular Medicine, Tokyo University of Pharmacy and Life Sciences, Japan (H.K., K.S., S.K., H.O., R.W., A.H., K.Y., F.I., T.W.); and Division of Diabetes, Metabolism, and Endocrinology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan (T.H.)
| | - Hazuki Okiyama
- From the Laboratory of Cardiovascular Medicine, Tokyo University of Pharmacy and Life Sciences, Japan (H.K., K.S., S.K., H.O., R.W., A.H., K.Y., F.I., T.W.); and Division of Diabetes, Metabolism, and Endocrinology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan (T.H.)
| | - Rena Watanabe
- From the Laboratory of Cardiovascular Medicine, Tokyo University of Pharmacy and Life Sciences, Japan (H.K., K.S., S.K., H.O., R.W., A.H., K.Y., F.I., T.W.); and Division of Diabetes, Metabolism, and Endocrinology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan (T.H.)
| | - Akinori Hasegawa
- From the Laboratory of Cardiovascular Medicine, Tokyo University of Pharmacy and Life Sciences, Japan (H.K., K.S., S.K., H.O., R.W., A.H., K.Y., F.I., T.W.); and Division of Diabetes, Metabolism, and Endocrinology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan (T.H.)
| | - Keigo Yamamoto
- From the Laboratory of Cardiovascular Medicine, Tokyo University of Pharmacy and Life Sciences, Japan (H.K., K.S., S.K., H.O., R.W., A.H., K.Y., F.I., T.W.); and Division of Diabetes, Metabolism, and Endocrinology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan (T.H.)
| | - Fumiko Itoh
- From the Laboratory of Cardiovascular Medicine, Tokyo University of Pharmacy and Life Sciences, Japan (H.K., K.S., S.K., H.O., R.W., A.H., K.Y., F.I., T.W.); and Division of Diabetes, Metabolism, and Endocrinology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan (T.H.)
| | - Tsutomu Hirano
- From the Laboratory of Cardiovascular Medicine, Tokyo University of Pharmacy and Life Sciences, Japan (H.K., K.S., S.K., H.O., R.W., A.H., K.Y., F.I., T.W.); and Division of Diabetes, Metabolism, and Endocrinology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan (T.H.)
| | - Takuya Watanabe
- From the Laboratory of Cardiovascular Medicine, Tokyo University of Pharmacy and Life Sciences, Japan (H.K., K.S., S.K., H.O., R.W., A.H., K.Y., F.I., T.W.); and Division of Diabetes, Metabolism, and Endocrinology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan (T.H.)
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8
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Griffin NM, Schnitzer JE. Overcoming key technological challenges in using mass spectrometry for mapping cell surfaces in tissues. Mol Cell Proteomics 2010; 10:R110.000935. [PMID: 20548103 DOI: 10.1074/mcp.r110.000935] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Plasma membranes form a critical biological interface between the inside of every cell and its external environment. Their roles in multiple key cellular functions make them important drug targets. However the protein composition of plasma membranes in general is poorly defined as the inherent properties of lipid embedded proteins, such as their hydrophobicity, low abundance, poor solubility and resistance to digestion and extraction makes them difficult to isolate, solubilize, and identify on a large scale by traditional mass spectrometry methods. Here we describe some of the significant advances that have occurred over the past ten years to address these challenges including: i) the development of new and improved membrane isolation techniques via either subfractionation or direct labeling and isolation of plasma membranes from cells and tissues; ii) modification of mass spectrometry methods to adapt to the hydrophobic nature of membrane proteins and peptides; iii) improvements to digestion protocols to compensate for the shortage of trypsin cleavage sites in lipid-embedded proteins, particularly multi-spanning proteins, and iv) the development of numerous bioinformatics tools which allow not only the identification and quantification of proteins, but also the prediction of membrane protein topology, membrane post-translational modifications and subcellular localization. This review emphasis the importance and difficulty of defining cells in proper patho- and physiological context to maintain the in vivo reality. We focus on how key technological challenges associated with the isolation and identification of cell surface proteins in tissues using mass spectrometry are being addressed in order to identify and quantify a comprehensive plasma membrane for drug and target discovery efforts.
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Affiliation(s)
- Noelle M Griffin
- Proteogenomics Research Institute for Systems Medicine, San Diego, California 92121, USA
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9
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Chrastina A, Valadon P, Massey K, Schnitzer J. Lung vascular targeting using antibody to aminopeptidase P: CT-SPECT imaging, biodistribution and pharmacokinetic analysis. J Vasc Res 2010; 47:531-43. [PMID: 20431301 PMCID: PMC2945271 DOI: 10.1159/000313880] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2009] [Accepted: 12/30/2009] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS Aminopeptidase P (APP) is specifically enriched in caveolae on the luminal surface of pulmonary vascular endothelium. APP antibodies bind lung endothelium in vivo and are rapidly and actively pumped across the endothelium into lung tissue. Here we characterize the immunotargeting properties and pharmacokinetics of the APP-specific recombinant antibody 833c. METHODS We used in situ binding, biodistribution analysis and in vivo imaging to assess the lung targeting of 833c. RESULTS More than 80% of 833c bound during the first pass through isolated perfused lungs. Dynamic SPECT acquisition showed that 833c rapidly and specifically targeted the lungs in vivo, reaching maximum levels within 2 min after intravenous injection. CT-SPECT imaging revealed specific targeting of 833c to the thoracic cavity and co-localization with a lung perfusion marker, Tc99m-labeled macroaggregated albumin. Biodistribution analysis confirmed lung-specific uptake of 833c which declined by first-order kinetics (t(½) = 110 h) with significant levels of 833c still present 30 days after injection. CONCLUSION These data show that APP expressed in endothelial caveolae appears to be readily accessible to circulating antibody rather specifically in lung. Targeting lung-specific caveolar APP provides an extraordinarily rapid and specific means to target pulmonary vasculature and potentially deliver therapeutic agents into the lung tissue.
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MESH Headings
- Aminopeptidases/immunology
- Aminopeptidases/metabolism
- Animals
- Antibodies, Monoclonal/administration & dosage
- Antibodies, Monoclonal/genetics
- Antibodies, Monoclonal/pharmacokinetics
- Antibody Specificity
- Caveolae/enzymology
- Cell Line
- Endothelium, Vascular/diagnostic imaging
- Endothelium, Vascular/enzymology
- Haplorhini
- Humans
- Injections, Intravenous
- Iodine Radioisotopes
- Lung/blood supply
- Lung/diagnostic imaging
- Male
- Perfusion
- Perfusion Imaging/methods
- Protein Binding
- Radiopharmaceuticals/administration & dosage
- Radiopharmaceuticals/pharmacokinetics
- Rats
- Rats, Sprague-Dawley
- Recombinant Proteins/pharmacokinetics
- Tissue Distribution
- Tomography, Emission-Computed, Single-Photon
- Tomography, X-Ray Computed
- Transfection
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Affiliation(s)
| | | | | | - J.E. Schnitzer
- Proteogenomics Research Institute for Systems Medicine, San Diego, Calif., USA
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10
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Nowakowski A, Alonso-Martín S, González-Manchón C, Larrucea S, Fernández D, Vilar M, Cerdán S, Ayuso MS, Parrilla R. Ventricular enlargement associated with the panneural ablation of the podocalyxin gene. Mol Cell Neurosci 2010; 43:90-7. [DOI: 10.1016/j.mcn.2009.09.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2009] [Revised: 09/14/2009] [Accepted: 09/25/2009] [Indexed: 10/20/2022] Open
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11
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Abstract
A major goal of molecular medicine is to target imaging agents or therapeutic compounds to a single organ. Targeting imaging agents to a single organ could facilitate the high-resolution, in vivo imaging of molecular events. In addition, genetic and acquired diseases primary to a single organ, such as cystic fibrosis, tuberculosis, lung cancer, pulmonary fibrosis, pulmonary hypertension, and acute respiratory distress syndrome, could be specifically targeted in the lung. By targeting and concentrating imaging agents or therapeutics to the lungs, deleterious side effects can be avoided with greater efficacy at much lower dosages. Pathologic changes can be identified earlier and followed over time. In addition, therapeutics that have been abandoned due to toxicities may find renewed utility when coupled with specific targeting agents such as antibodies. To achieve these goals, distinct molecular signatures must be found for each organ or disease-state.
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Agarwal N, Lippmann ES, Shusta EV. Identification and expression profiling of blood-brain barrier membrane proteins. J Neurochem 2009; 112:625-35. [PMID: 19895664 DOI: 10.1111/j.1471-4159.2009.06481.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Blood-brain barrier (BBB) membrane proteins play crucial roles in the proper functioning of the BBB as well as in disease progression. Previously, we developed a novel approach for identifying membrane proteins expressed at the BBB, which we referred to as multiplex expression cloning. In this study, the proteome coverage of the multiplex expression cloning approach was expanded to allow the identification of a total of 30 BBB membrane proteins that are diverse in function and abundance. To unveil those membrane proteins that are enriched at the BBB and hence partially responsible for some of its unique characteristics, the transcript abundance levels for all 30 BBB membrane proteins were compared with those found in microvessels derived from lung, liver, heart, and kidney. Such quantitative PCR profiling of RNA samples from laser capture microdissected microvessels revealed that the transcripts for five membrane proteins, namely Lutheran glycoprotein, carbonic anhydrase IV, uncoupling protein 2, podocalyxin, and solute carrier family 38, member 5, were BBB selective, in that expression was elevated in brain microvessels when compared with all of the vascular beds tested. Many other membrane protein transcripts, whereas not as BBB-restricted, showed selective expression within subsets of tissues indicating other potential parallels and contrasts between vascular beds in the body. The identification of BBB membrane proteins could help better understand the molecular mechanisms responsible for BBB function and those with selective expression may have utility for BBB-targeted therapies.
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Affiliation(s)
- Nitin Agarwal
- Department of Chemical and Biological Engineering, University of Wisconsin - Madison, Madison, Wisconsin 53706, USA
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Testa JE, Chrastina A, Oh P, Li Y, Witkiewicz H, Czarny M, Buss T, Schnitzer JE. Immunotargeting and cloning of two CD34 variants exhibiting restricted expression in adult rat endothelia in vivo. Am J Physiol Lung Cell Mol Physiol 2009; 297:L251-62. [PMID: 19465515 DOI: 10.1152/ajplung.90565.2008] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Mapping protein expression of endothelial cells (EC) in vivo is fundamental to understanding cellular function and may yield new tissue-selective targets. We have developed a monoclonal antibody, MAb J120, to a protein expressed primarily in rat lung and heart endothelium. The antigen was identified as CD34, a marker of hematopoietic stem cells and global marker of endothelial cells in human and mouse tissues. PCR-based cloning identified two CD34 variant proteins, full length and truncated, both of which are expressed on luminal endothelial cell plasma membranes (P) isolated from lung. Truncated CD34 predominated in heart P, and neither variant was detected in P from kidney or liver. CD34 in lung was readily accessible to (125)I-J120 inoculated intravenously, and immunohistochemistry showed strong CD34 expression in lung EC. Few microvessels stained in heart and kidney, and no CD34 was detected in vessels of other organs or in lymphatics. We present herein the first complete sequence of a rat CD34 variant and show for the first time that the encoded truncated variant is endogenously expressed on EC in vivo. We also demonstrate that CD34 expression in rat EC, unlike mouse and human, is restricted in its distribution enabling quite specific lung targeting in vivo.
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Affiliation(s)
- Jacqueline E Testa
- Proteogenomics Research Institute For Systems Medicine, Sidney Kimmel Cancer Center, San Diego, CA 92121, USA.
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