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Robinson ML, Hahn PG, Inouye BD, Underwood N, Whitehead SR, Abbott KC, Bruna EM, Cacho NI, Dyer LA, Abdala-Roberts L, Allen WJ, Andrade JF, Angulo DF, Anjos D, Anstett DN, Bagchi R, Bagchi S, Barbosa M, Barrett S, Baskett CA, Ben-Simchon E, Bloodworth KJ, Bronstein JL, Buckley YM, Burghardt KT, Bustos-Segura C, Calixto ES, Carvalho RL, Castagneyrol B, Chiuffo MC, Cinoğlu D, Cinto Mejía E, Cock MC, Cogni R, Cope OL, Cornelissen T, Cortez DR, Crowder DW, Dallstream C, Dáttilo W, Davis JK, Dimarco RD, Dole HE, Egbon IN, Eisenring M, Ejomah A, Elderd BD, Endara MJ, Eubanks MD, Everingham SE, Farah KN, Farias RP, Fernandes AP, Fernandes GW, Ferrante M, Finn A, Florjancic GA, Forister ML, Fox QN, Frago E, França FM, Getman-Pickering AS, Getman-Pickering Z, Gianoli E, Gooden B, Gossner MM, Greig KA, Gripenberg S, Groenteman R, Grof-Tisza P, Haack N, Hahn L, Haq SM, Helms AM, Hennecke J, Hermann SL, Holeski LM, Holm S, Hutchinson MC, Jackson EE, Kagiya S, Kalske A, Kalwajtys M, Karban R, Kariyat R, Keasar T, Kersch-Becker MF, Kharouba HM, Kim TN, Kimuyu DM, Kluse J, Koerner SE, Komatsu KJ, Krishnan S, Laihonen M, Lamelas-López L, LaScaleia MC, Lecomte N, Lehn CR, Li X, Lindroth RL, LoPresti EF, Losada M, Louthan AM, Luizzi VJ, Lynch SC, Lynn JS, Lyon NJ, Maia LF, Maia RA, Mannall TL, Martin BS, Massad TJ, McCall AC, McGurrin K, Merwin AC, Mijango-Ramos Z, Mills CH, Moles AT, Moore CM, Moreira X, Morrison CR, Moshobane MC, Muola A, Nakadai R, Nakajima K, Novais S, Ogbebor CO, Ohsaki H, Pan VS, Pardikes NA, Pareja M, Parthasarathy N, Pawar RR, Paynter Q, Pearse IS, Penczykowski RM, Pepi AA, Pereira CC, Phartyal SS, Piper FI, Poveda K, Pringle EG, Puy J, Quijano T, Quintero C, Rasmann S, Rosche C, Rosenheim LY, Rosenheim JA, Runyon JB, Sadeh A, Sakata Y, Salcido DM, Salgado-Luarte C, Santos BA, Sapir Y, Sasal Y, Sato Y, Sawant M, Schroeder H, Schumann I, Segoli M, Segre H, Shelef O, Shinohara N, Singh RP, Smith DS, Sobral M, Stotz GC, Tack AJM, Tayal M, Tooker JF, Torrico-Bazoberry D, Tougeron K, Trowbridge AM, Utsumi S, Uyi O, Vaca-Uribe JL, Valtonen A, van Dijk LJA, Vandvik V, Villellas J, Waller LP, Weber MG, Yamawo A, Yim S, Zarnetske PL, Zehr LN, Zhong Z, Wetzel WC. Plant size, latitude, and phylogeny explain within-population variability in herbivory. Science 2023; 382:679-683. [PMID: 37943897 DOI: 10.1126/science.adh8830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Accepted: 09/27/2023] [Indexed: 11/12/2023]
Abstract
Interactions between plants and herbivores are central in most ecosystems, but their strength is highly variable. The amount of variability within a system is thought to influence most aspects of plant-herbivore biology, from ecological stability to plant defense evolution. Our understanding of what influences variability, however, is limited by sparse data. We collected standardized surveys of herbivory for 503 plant species at 790 sites across 116° of latitude. With these data, we show that within-population variability in herbivory increases with latitude, decreases with plant size, and is phylogenetically structured. Differences in the magnitude of variability are thus central to how plant-herbivore biology varies across macroscale gradients. We argue that increased focus on interaction variability will advance understanding of patterns of life on Earth.
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Affiliation(s)
- M L Robinson
- Department of Entomology, Michigan State University, East Lansing, MI, USA
- Department of Biology, Utah State University, Logan, UT, USA
| | - P G Hahn
- Entomology and Nematology Department, University of Florida, Gainesville, FL, USA
| | - B D Inouye
- Department of Biological Science, Florida State University, Tallahassee, FL, USA
| | - N Underwood
- Department of Biological Science, Florida State University, Tallahassee, FL, USA
| | - S R Whitehead
- Department of Biological Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - K C Abbott
- Department of Biology, Case Western Reserve University, Cleveland, OH, USA
| | - E M Bruna
- Center for Latin American Studies, University of Florida, Gainesville, FL, USA
- Department of Wildlife Ecology and Conservation, University of Florida, Gainesville, FL, USA
| | - N I Cacho
- Instituto de Biología, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - L A Dyer
- Biology Department, University of Nevada, Reno, Reno, NV, USA
| | - L Abdala-Roberts
- Departamento de Ecología Tropical, Universidad Autónoma de Yucatán, Mérida, Yucatán, México
| | - W J Allen
- Bio-Protection Research Centre, University of Canterbury, Christchurch, New Zealand
| | - J F Andrade
- Departamento de Sistemática e Ecologia Universidade Federal da Paraíba, João Pessoa, Brazil
| | - D F Angulo
- Centro de Investigación Científica de Yucatán, Departamento de Recursos Naturales, Mérida, Yucatán, México
| | - D Anjos
- Instituto de Biologia, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil
| | - D N Anstett
- Department of Entomology, Michigan State University, East Lansing, MI, USA
- Plant Resilience Institute, Michigan State University, East Lansing, MI, USA
- Department of Plant Biology, Michigan State University, East Lansing, MI, USA
| | - R Bagchi
- Department of Ecology and Evolutionary Biology, University of Connecticut, Storrs, CT, USA
| | - S Bagchi
- Centre for Ecological Sciences, Indian Institute of Science, Bangalore, Karnataka, India
| | - M Barbosa
- Department of Genetics, Ecology and Evolution, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - S Barrett
- Department of Biodiversity Conservation & Attractions Western Australia, Albany, Western Australia, Australia
| | - C A Baskett
- Institute of Science and Technology Austria, Klosterneuburg, Austria
| | - E Ben-Simchon
- Department of Natural Resources, Institute of Plant Sciences, Agricultural Research Organization - Volcani Institute, Rishon Le Tzion, Israel
- Robert H. Smith Faculty of Agriculture, Food, and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - K J Bloodworth
- Department of Biology, University of North Carolina Greensboro, Greensboro, NC, USA
| | - J L Bronstein
- Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ, USA
| | - Y M Buckley
- School of Natural Sciences, Zoology, Trinity College Dublin, Dublin, Ireland
| | - K T Burghardt
- Department of Entomology, University of Maryland, College Park, MD, USA
| | - C Bustos-Segura
- Institute of Biology, University of Neuchatel, Neuchatel, Switzerland
| | - E S Calixto
- Entomology and Nematology Department, University of Florida, Gainesville, FL, USA
| | - R L Carvalho
- Institute of Advanced Studies, University of São Paulo, São Paulo, Brazil
| | | | - M C Chiuffo
- Grupo de Ecología de Invasiones, INIBIOMA, Universidad Nacional del Comahue, CONICET, San Carlos de Bariloche, Río Negro, Argentina
| | - D Cinoğlu
- Department of Integrative Biology, The University of Texas at Austin, Austin, TX, USA
| | - E Cinto Mejía
- Department of Entomology, Michigan State University, East Lansing, MI, USA
| | - M C Cock
- Facultad de Ciencias Exactas y Naturales, Instituto de Ciencias de la Tierra y Ambientales de La Pampa, Santa Rosa, La Pampa, Argentina
| | - R Cogni
- Department of Ecology, University of São Paulo, São Paulo, Brazil
| | - O L Cope
- Department of Entomology, Michigan State University, East Lansing, MI, USA
- Department of Biology, Whitworth University, Spokane, WA, USA
| | - T Cornelissen
- Department of Genetics, Ecology and Evolution, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - D R Cortez
- Department of Biology, California State University San Bernardino, San Bernardino, CA, USA
| | - D W Crowder
- Department of Entomology, Washington State University, Pullman, WA, USA
| | - C Dallstream
- Department of Biology, McGill University, Montreal, Quebec, Canada
| | - W Dáttilo
- Red de Ecoetología, Instituto de Ecología AC, Xalapa, Veracruz, Mexico
| | - J K Davis
- Department of Entomology, Cornell University, Ithaca, NY, USA
| | - R D Dimarco
- Department of Biology and Biochemistry, University of Houston, Houston, TX, USA
- Grupo de Ecología de Poblaciones de Insectos, IFAB, San Carlos de Bariloche, Río Negro, Argentina
| | - H E Dole
- Department of Entomology, Michigan State University, East Lansing, MI, USA
| | - I N Egbon
- Department of Animal and Environmental Biology, University of Benin, Benin City, Nigeria
| | - M Eisenring
- Forest Entomology, Swiss Federal Research Institute WSL, Birmensdorf, Switzerland
| | - A Ejomah
- Department of Animal and Environmental Biology, University of Benin, Benin City, Nigeria
| | - B D Elderd
- Department of Biological Sciences, Louisiana State University, Baton Rouge, LA, USA
| | - M-J Endara
- Grupo de Investigación en Ecología y Evolución en los Trópicos-EETROP, Universidad de las Américas, Quito, Ecuador
| | - M D Eubanks
- Department of Entomology, Texas A&M University, College Station, TX, USA
| | - S E Everingham
- Institute of Plant Sciences, University of Bern, Bern, Switzerland
- Evolution & Ecology Research Centre, University of New South Wales Sydney, Sydney, Australia
| | - K N Farah
- Department of Biology, Washington University in St. Louis, St. Louis, MO, USA
| | - R P Farias
- Instituto de Biologia, Universidade Federal da Bahia, Salvador, Bahia, Brasil
| | - A P Fernandes
- Department of Botany, Ganpat Parsekar College of Education Harmal, Pernem, Goa, India
| | - G W Fernandes
- Department of Genetics, Ecology and Evolution, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
- Knowledge Center for Biodiversity, Brazil
| | - M Ferrante
- Faculty of Agricultural Sciences and Environment, University of the Azores, Ponta Delgada, Portugal
- Department of Crop Sciences, University of Göttingen, Göttingen, Germany
| | - A Finn
- School of Natural Sciences, Zoology, Trinity College Dublin, Dublin, Ireland
| | - G A Florjancic
- Department of Biological Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - M L Forister
- Biology Department, University of Nevada, Reno, Reno, NV, USA
| | - Q N Fox
- Department of Biology, Washington University in St. Louis, St. Louis, MO, USA
| | - E Frago
- CIRAD, UMR CBGP, INRAE, Institut Agro, IRD, Université Montpellier, Montpellier, France
| | - F M França
- School of Biological Sciences, University of Bristol, Bristol, UK
- Programa de Pós-Graduação em Ecologia, Universidade Federal do Pará, Belém, Pará, Brasil
| | | | - Z Getman-Pickering
- Department of Mechanical and Industrial Engineering, University of Massachusetts Amherst, Amherst, MA, USA
| | - E Gianoli
- Departamento de Biología, Universidad de La Serena, La Serena, Chile
| | - B Gooden
- CSIRO Black Mountain Laboratories, CSIRO Health and Biosecurity, Canberra, Australia
| | - M M Gossner
- Forest Entomology, Swiss Federal Research Institute WSL, Birmensdorf, Switzerland
- Institute of Terrestrial Ecosystems, Department of Environmental Systems Science, ETH Zurich, Zurich, Switzerland
| | - K A Greig
- Department of Integrative Biology, The University of Texas at Austin, Austin, TX, USA
| | - S Gripenberg
- School of Biological Sciences, University of Reading, Reading, UK
| | - R Groenteman
- Manaaki Whenua - Landcare Research, Lincoln, New Zealand
| | - P Grof-Tisza
- Institute of Biology, University of Neuchatel, Neuchatel, Switzerland
| | - N Haack
- Independent Institute for Environmental Issues, Halle, Germany
| | - L Hahn
- Molecular Evolution and Systematics of Animals, University of Leipzig, Leipzig, Germany
| | - S M Haq
- Wildlife Crime Control Division, Wildlife Trust of India, Noida, Uttar Pradesh, India
| | - A M Helms
- Department of Entomology, Texas A&M University, College Station, TX, USA
| | - J Hennecke
- Systematic Botany and Functional Biodiversity, Leipzig University, Leipzig, Germany
- German Centre for Integrative Biodiversity Research (iDiv), Leipzig, Germany
| | - S L Hermann
- Department of Entomology, The Pennsylvania State University, University Park, PA, USA
| | - L M Holeski
- Department of Biological Sciences and Center for Adaptive Western Landscapes, Northern Arizona University, Flagstaff, AZ, USA
| | - S Holm
- Department of Environmental and Biological Sciences, University of Eastern Finland, Joensuu, Finland
- Department of Zoology, University of Tartu, Tartu, Estonia
| | - M C Hutchinson
- Department of Life and Environmental Sciences, University of California, Merced, Merced, CA, USA
| | - E E Jackson
- School of Biological Sciences, University of Reading, Reading, UK
| | - S Kagiya
- Field Science Center for Northern Biosphere, Hokkaido University, Sapporo, Hokkaido, Japan
| | - A Kalske
- Department of Biology, University of Turku, Turku, Finland
| | - M Kalwajtys
- Department of Entomology, Michigan State University, East Lansing, MI, USA
| | - R Karban
- Department of Entomology and Nematology, University of California Davis, Davis, CA, USA
| | - R Kariyat
- Department of Entomology and Plant Pathology, University of Arkansas, Fayetteville, AR, USA
| | - T Keasar
- Department of Biology and the Environment, University of Haifa - Oranim, Oranim, Tivon, Israel
| | - M F Kersch-Becker
- Department of Entomology, The Pennsylvania State University, University Park, PA, USA
| | - H M Kharouba
- Department of Biology, University of Ottawa, Ottawa, Ontario, Canada
| | - T N Kim
- Department of Entomology, Kansas State University, Manhattan, KS, USA
| | - D M Kimuyu
- Department of Natural Resources, Karatina University, Karatina, Kenya
| | - J Kluse
- Department of Biological Sciences, Louisiana State University, Baton Rouge, LA, USA
| | - S E Koerner
- Department of Biology, University of North Carolina Greensboro, Greensboro, NC, USA
| | - K J Komatsu
- Department of Biology, University of North Carolina Greensboro, Greensboro, NC, USA
- Smithsonian Environmental Research Center, Edgewater, MD, USA
| | - S Krishnan
- Center for Sustainable Future, Amrita University and EIACP RP, Amrita Viswa Vidyapeetham, Coimbatore, India
| | - M Laihonen
- Biodiversity Unit, University of Turku, Turku, Finland
| | - L Lamelas-López
- Faculty of Agricultural Sciences and Environment, University of the Azores, Ponta Delgada, Portugal
| | - M C LaScaleia
- Department of Ecology and Evolutionary Biology, University of Connecticut, Storrs, CT, USA
| | - N Lecomte
- Canada Research Chair in Polar and Boreal Ecology, Department of Biology and Centre d'Études Nordiques, Université de Moncton, Moncton, Canada
| | - C R Lehn
- Biological Sciences Course, Instituto Federal Farroupilha, Panambi, RS, Brazil
| | - X Li
- College of Resources and Environmental sciences, Jilin Agricultural University, Changchun, China
| | - R L Lindroth
- Department of Entomology, University of Wisconsin-Madison, Madison, WI, USA
| | - E F LoPresti
- Department of Biological Sciences, University of South Carolina, Columbia, SC, USA
| | - M Losada
- Department of Soil Science and Agricultural Chemistry, University of Santiago de Compostela, Santiago de Compostela, A Coruña, Spain
| | - A M Louthan
- Division of Biology, Kansas State University, Manhattan, KS, USA
| | - V J Luizzi
- Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ, USA
| | - S C Lynch
- Division of Biology, Kansas State University, Manhattan, KS, USA
| | - J S Lynn
- Department of Biological Sciences, University of Bergen, Bergen, Norway
- Department of Earth and Environmental Sciences, University of Manchester, Manchester, UK
| | - N J Lyon
- Department of Entomology, Michigan State University, East Lansing, MI, USA
| | - L F Maia
- Bio-Protection Research Centre, University of Canterbury, Christchurch, New Zealand
- School of Biological Sciences, University of Bristol, Bristol, UK
| | - R A Maia
- Department of Genetics, Ecology and Evolution, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - T L Mannall
- Institute of Plant Sciences, University of Bern, Bern, Switzerland
| | - B S Martin
- Department of Plant Biology, Michigan State University, East Lansing, MI, USA
- Ecology, Evolution, and Behavior Program, Michigan State University, East Lansing, MI, USA
| | - T J Massad
- Department of Scientific Services, Gorongosa National Park, Sofala, Mozambique
| | - A C McCall
- Biology Department, Denison University, Granville, OH, USA
| | - K McGurrin
- Department of Entomology, University of Maryland, College Park, MD, USA
| | - A C Merwin
- Department of Biology and Geology, Baldwin Wallace University, Berea, OH, USA
| | - Z Mijango-Ramos
- Department of Integrative Biology, The University of Texas at Austin, Austin, TX, USA
| | - C H Mills
- Evolution & Ecology Research Centre, University of New South Wales Sydney, Sydney, Australia
| | - A T Moles
- Evolution & Ecology Research Centre, University of New South Wales Sydney, Sydney, Australia
| | - C M Moore
- Department of Biology, Colby College, Waterville, ME, USA
| | - X Moreira
- Misión Biológica de Galicia, Consejo Superior de Investigaciones Científicas, Pontevedra, Galicia, Spain
| | - C R Morrison
- Department of Integrative Biology, The University of Texas at Austin, Austin, TX, USA
| | - M C Moshobane
- South African National Biodiversity Institute, Pretoria National Botanical Garden, Brummeria, Silverton, South Africa
- Centre for Functional Biodiversity, University of KwaZulu-Natal, Scottsville, Pietermaritzburg, South Africa
| | - A Muola
- Division of Biotechnology and Plant Health, Norwegian Institute of Bioeconomy Research, Tromsø, Norway
| | - R Nakadai
- Faculty of Environment and Information Sciences, Yokohama National University, Yokohama, Kanagawa, Japan
| | - K Nakajima
- Insitute of Science and Engineering, Chuo University, Tokyo, Japan
- Institute of Cave Research, Shimohei-guun, Iwate Prefecture, Japan
| | - S Novais
- Red de Interacciones Multitróficas, Instituto de Ecología A.C., Xalapa, Veracruz, Mexico
| | - C O Ogbebor
- Nigerian Institute for Oil Palm Research, Benin City, Edo State, Nigeria
| | - H Ohsaki
- Department of Biological Sciences, Hirosaki University, Hirosaki, Aomori, Japan
| | - V S Pan
- Ecology, Evolution, and Behavior Program, Michigan State University, East Lansing, MI, USA
- Department of Integrative Biology, Michigan State University, East Lansing, MI, USA
| | - N A Pardikes
- Department of Biology, Utah State University, Logan, UT, USA
| | - M Pareja
- Departamento de Biologia Animal, Universidade Estadual de Campinas, Campinas, Brazil
| | - N Parthasarathy
- Department of Ecology and Evironmental Sciences, Pondicherry University, Puducherry, India
| | | | - Q Paynter
- Manaaki Whenua - Landcare Research, Auckland, New Zealand
| | - I S Pearse
- U.S. Geological Survey, Fort Collins Science Center, Fort Collins, CO, USA
| | - R M Penczykowski
- Department of Biology, Washington University in St. Louis, St. Louis, MO, USA
| | - A A Pepi
- Department of Biology, Tufts University, Medford, MA, USA
| | - C C Pereira
- Department of Genetics, Ecology and Evolution, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - S S Phartyal
- School of Ecology & Environment Studies, Nalanda University, Rajgir, India
| | - F I Piper
- Millennium Nucleus of Patagonian Limit of Life and Instituto de Ciencias Biológicas, Universidad de Talca, Talca, Chile
- Institute of Ecology and Biodiversity, Ñuñoa, Santiago
| | - K Poveda
- Department of Entomology, Cornell University, Ithaca, NY, USA
| | - E G Pringle
- Biology Department, University of Nevada, Reno, Reno, NV, USA
| | - J Puy
- School of Natural Sciences, Zoology, Trinity College Dublin, Dublin, Ireland
- Estación Biológica de Doñana, Consejo Superior de Investigaciones Científicas, Sevilla, Spain
| | - T Quijano
- Departamento de Ecología Tropical, Universidad Autónoma de Yucatán, Mérida, Yucatán, México
| | - C Quintero
- INIBIOMA, CONICET - Universidad Nacional del Comahue, San Carlos de Bariloche, Río Negro, Argentina
| | - S Rasmann
- Institute of Biology, University of Neuchatel, Neuchatel, Switzerland
| | - C Rosche
- German Centre for Integrative Biodiversity Research (iDiv), Leipzig, Germany
- Institute of Geobotany and Botanical Garden, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - L Y Rosenheim
- Department of Entomology and Nematology, University of California Davis, Davis, CA, USA
| | - J A Rosenheim
- Department of Entomology and Nematology, University of California Davis, Davis, CA, USA
| | - J B Runyon
- Rocky Mountain Research Station, USDA Forest Service, Bozeman, MT, USA
| | - A Sadeh
- Department of Natural Resources, Newe Ya'ar Research Center, Volcani Institute, Ramat Yishay, Israel
| | - Y Sakata
- Department of Biological Environment, Akita Prefectural University, Shimoshinjyo-Nakano, Akita, Japan
| | - D M Salcido
- Biology Department, University of Nevada, Reno, Reno, NV, USA
| | - C Salgado-Luarte
- Instituto de Investigación Multidisciplinario en Ciencia y Tecnología, Universidad de La Serena, La Serena, Chile
| | - B A Santos
- Departamento de Sistemática e Ecologia Universidade Federal da Paraíba, João Pessoa, Brazil
| | - Y Sapir
- The Botanic Garden, School of Plant Sciences and Food Security, Faculty of Life Science, Tel Aviv University, Tel Aviv, Israel
| | - Y Sasal
- INIBIOMA, CONICET - Universidad Nacional del Comahue, San Carlos de Bariloche, Río Negro, Argentina
| | - Y Sato
- Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, Switzerland
| | - M Sawant
- Department of Ecology, University of Pune, Maharashtra, India
| | - H Schroeder
- Department of Entomology, Cornell University, Ithaca, NY, USA
| | - I Schumann
- Department of Human Genetics, University of Leipzig, Leipzig, Germany
| | - M Segoli
- Mitrani Department of Desert Ecology, Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Ben-Gurion, Israel
| | - H Segre
- Department of Natural Resources, Institute of Plant Sciences, Agricultural Research Organization - Volcani Institute, Rishon Le Tzion, Israel
- Robert H. Smith Faculty of Agriculture, Food, and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
- Department of Natural Resources, Newe Ya'ar Research Center, Volcani Institute, Ramat Yishay, Israel
| | - O Shelef
- Department of Natural Resources, Institute of Plant Sciences, Agricultural Research Organization - Volcani Institute, Rishon Le Tzion, Israel
| | - N Shinohara
- Graduate School of Life Sciences, Tohoku University, Sendai, Japan
| | - R P Singh
- McGuire Center for Lepidoptera and Biodiversity, Florida Museum of Natural History, University of Florida, Gainesville, FL, USA
| | - D S Smith
- Department of Biology, California State University San Bernardino, San Bernardino, CA, USA
| | - M Sobral
- Department of Soil Science and Agricultural Chemistry, University of Santiago de Compostela, Santiago de Compostela, A Coruña, Spain
| | - G C Stotz
- Department of Plant and Environmental Sciences, Clemson University, Clemson, SC, USA
| | - A J M Tack
- Department of Ecology, Environment and Plant Sciences, Stockholm University, Stockholm, Sweden
| | - M Tayal
- Department of Plant and Environmental Sciences, Clemson University, Clemson, SC, USA
| | - J F Tooker
- Department of Entomology, The Pennsylvania State University, University Park, PA, USA
| | - D Torrico-Bazoberry
- Laboratorio de Comportamiento Animal y Humano, Centro de Investigación en Complejidad Social, Universidad del Desarrollo, Las Condes, Chile
| | - K Tougeron
- Écologie et Dynamique des Systèmes Anthropisés, Université de Picardie Jules Verne, UMR 7058 CNRS, Amiens, France
- Ecology of Interactions and Global Change, Institut de Recherche en Biosciences, Université de Mons, Mons, Belgium
| | - A M Trowbridge
- Department of Forest and Wildlife Ecology, University of Wisconsin, Madison, WI, USA
| | - S Utsumi
- Field Science Center for Northern Biosphere, Hokkaido University, Sapporo, Hokkaido, Japan
| | - O Uyi
- Department of Animal and Environmental Biology, University of Benin, Benin City, Nigeria
- Department of Entomology, University of Georgia, Tifton, GA, USA
| | - J L Vaca-Uribe
- Programa de ingeniría agroecológica, Corporación Universitaria Minuto de Dios, Bogotá, Colombia
| | - A Valtonen
- Department of Environmental and Biological Sciences, University of Eastern Finland, Joensuu, Finland
| | - L J A van Dijk
- Department of Ecology, Environment and Plant Sciences, Stockholm University, Stockholm, Sweden
- Department of Bioinformatics and Genetics, Swedish Museum of Natural History, Stockholm, Sweden
| | - V Vandvik
- Department of Biological Sciences, University of Bergen, Bergen, Norway
| | - J Villellas
- Department of Life Sciences, University of Alcalá, Madrid, Spain
| | - L P Waller
- Bioprotection Aotearoa, Lincoln University, Lincoln, New Zealand
| | - M G Weber
- Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI, USA
| | - A Yamawo
- Department of Biological Sciences, Hirosaki University, Hirosaki, Aomori, Japan
- Center for Ecological Research, Kyoto University, Otsu, Japan
| | - S Yim
- Biology Department, University of Nevada, Reno, Reno, NV, USA
| | - P L Zarnetske
- Ecology, Evolution, and Behavior Program, Michigan State University, East Lansing, MI, USA
- Department of Integrative Biology, Michigan State University, East Lansing, MI, USA
| | - L N Zehr
- Department of Entomology, Michigan State University, East Lansing, MI, USA
| | - Z Zhong
- Institute of Grassland Science, Key Laboratory of Vegetation Ecology, Ministry of Education/Jilin Songnen Grassland Ecosystem National Observation and Research Station, Northeast Normal University, Changchun, Jilin Province, China
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Beijing, China
| | - W C Wetzel
- Department of Entomology, Michigan State University, East Lansing, MI, USA
- Plant Resilience Institute, Michigan State University, East Lansing, MI, USA
- Ecology, Evolution, and Behavior Program, Michigan State University, East Lansing, MI, USA
- Department of Integrative Biology, Michigan State University, East Lansing, MI, USA
- W.K. Kellogg Biological Station, Michigan State University, Hickory Corners, MI, USA
- Land Resources and Environmental Sciences, Montana State University, Bozeman, MT, USA
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Kaur S, Kanungo R, Horiuchi W, Hagen G, Holt JD, Hu BS, Miyagi T, Suzuki T, Ameil F, Atkinson J, Ayyad Y, Bagchi S, Cortina-Gil D, Dillmann I, Estradé A, Evdokimov A, Farinon F, Geissel H, Guastalla G, Janik R, Knöbel R, Kurcewicz J, Litvinov YA, Marta M, Mostazo M, Mukha I, Nociforo C, Ong HJ, Otsuka T, Pietri S, Prochazka A, Scheidenberger C, Sitar B, Strmen P, Takechi M, Tanaka J, Tanihata I, Terashima S, Vargas J, Weick H, Winfield JS. Proton Distribution Radii of ^{16-24}O: Signatures of New Shell Closures and Neutron Skin. Phys Rev Lett 2022; 129:142502. [PMID: 36240396 DOI: 10.1103/physrevlett.129.142502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 07/31/2022] [Accepted: 08/30/2022] [Indexed: 06/16/2023]
Abstract
The root mean square radii of the proton density distribution in ^{16-24}O derived from measurements of charge changing cross sections with a carbon target at ∼900A MeV together with the matter radii portray thick neutron skin for ^{22-24}O despite ^{22,24}O being doubly magic. Imprints of the shell closures at N=14 and 16 are reflected in local minima of their proton radii that provide evidence for the tensor interaction causing them. The radii agree with ab initio calculations employing the chiral NNLO_{sat} interaction, though skin thickness predictions are challenged. Shell model predictions agree well with the data.
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Affiliation(s)
- S Kaur
- Astronomy and Physics Department, Saint Mary's University, Halifax, Nova Scotia B3H 3C3, Canada
- Department of Physics and Atmospheric Science, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | - R Kanungo
- Astronomy and Physics Department, Saint Mary's University, Halifax, Nova Scotia B3H 3C3, Canada
- TRIUMF, Vancouver, British Columbia V6T 4A3, Canada
| | - W Horiuchi
- Department of Physics, Osaka Metropolitan University, Osaka 558-8585, Japan
- Nambu Yoichiro Institute of Theoretical and Experimental Physics (NITEP), Osaka Metropolitan University, Osaka 558-8585, Japan
- Department of Physics, Hokkaido University, Sapporo 060-0810, Japan
| | - G Hagen
- TRIUMF, Vancouver, British Columbia V6T 4A3, Canada
- Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - J D Holt
- TRIUMF, Vancouver, British Columbia V6T 4A3, Canada
| | - B S Hu
- TRIUMF, Vancouver, British Columbia V6T 4A3, Canada
| | - T Miyagi
- Technische Universität Darmstadt, Department of Physics, 64289 Darmstadt, Germany
- ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - T Suzuki
- Department of Physics, Nihon University, Setagaya-ku, Tokyo 156-8550, Japan
| | - F Ameil
- GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
| | - J Atkinson
- Astronomy and Physics Department, Saint Mary's University, Halifax, Nova Scotia B3H 3C3, Canada
| | - Y Ayyad
- Universidad de Santiago de Compostela, E-15706 Santiago de Compostella, Spain
| | - S Bagchi
- Astronomy and Physics Department, Saint Mary's University, Halifax, Nova Scotia B3H 3C3, Canada
- GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
| | - D Cortina-Gil
- Universidad de Santiago de Compostela, E-15706 Santiago de Compostella, Spain
| | - I Dillmann
- GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
- Justus-Liebig University, 35392 Giessen, Germany
| | - A Estradé
- Astronomy and Physics Department, Saint Mary's University, Halifax, Nova Scotia B3H 3C3, Canada
- GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
| | - A Evdokimov
- GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
| | - F Farinon
- GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
| | - H Geissel
- GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
- Justus-Liebig University, 35392 Giessen, Germany
| | - G Guastalla
- GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
| | - R Janik
- Faculty of Mathematics and Physics, Comenius University, 84215 Bratislava, Slovakia
| | - R Knöbel
- GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
| | - J Kurcewicz
- GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
| | - Yu A Litvinov
- GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
| | - M Marta
- GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
| | - M Mostazo
- Universidad de Santiago de Compostela, E-15706 Santiago de Compostella, Spain
| | - I Mukha
- GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
| | - C Nociforo
- GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
| | - H J Ong
- RCNP, Osaka University, Mihogaoka, Ibaraki, Osaka 567 0047, Japan
| | - T Otsuka
- Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
- RIKEN Nishina Center, Hirosawa, Wako, Saitama 351-0198, Japan
| | - S Pietri
- GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
| | - A Prochazka
- GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
| | - C Scheidenberger
- GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
- Justus-Liebig University, 35392 Giessen, Germany
| | - B Sitar
- Faculty of Mathematics and Physics, Comenius University, 84215 Bratislava, Slovakia
| | - P Strmen
- Faculty of Mathematics and Physics, Comenius University, 84215 Bratislava, Slovakia
| | - M Takechi
- GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
| | - J Tanaka
- RCNP, Osaka University, Mihogaoka, Ibaraki, Osaka 567 0047, Japan
| | - I Tanihata
- RCNP, Osaka University, Mihogaoka, Ibaraki, Osaka 567 0047, Japan
- School of Physics and Nuclear Energy Engineering and IRCNPC, Beihang University, Beijing 100191, China
| | - S Terashima
- School of Physics and Nuclear Energy Engineering and IRCNPC, Beihang University, Beijing 100191, China
| | - J Vargas
- Universidad de Santiago de Compostela, E-15706 Santiago de Compostella, Spain
| | - H Weick
- GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
| | - J S Winfield
- GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
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Bhowmik MD D, Das C, Verma P, Maity I, Mourya B, Saini B, Subbiah A, Bagchi S, Yadav R, Mahajan S, Agarwal S. POS-039 RENAL ABSCESSES (COMPLICATED BY ACUTE KIDNEY INJURY) IN YOUNG OTHERWISE HEALTHY NON-DIABETIC ADULTS WITHOUT URINARY TRACT ABNORMALITIES – A CASE SERIES. Kidney Int Rep 2022. [DOI: 10.1016/j.ekir.2022.07.056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022] Open
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4
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Agarwal S, Bagchi S, Bhowmik D, Mahajan S, Yadav R, Subbiah A, Srivastava A, Panigrahi D, Balloni V. POS-097 IMPACT OF UNIVERSAL PROPHYLAXIS ON INCIDENCE OF CMV INFECTION IN D+/R+ LIVING RENAL TRANSPLANT RECIPIENTS: SINGLE CENTER STUDY FROM INDIA. Kidney Int Rep 2022. [DOI: 10.1016/j.ekir.2022.07.115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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5
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Reticker-Flynn NE, Zhang W, Belk JA, Basto PA, Escalante NK, Pilarowski GOW, Bejnood A, Martins MM, Kenkel JA, Linde IL, Bagchi S, Yuan R, Chang S, Spitzer MH, Carmi Y, Cheng J, Tolentino LL, Choi O, Wu N, Kong CS, Gentles AJ, Sunwoo JB, Satpathy AT, Plevritis SK, Engleman EG. Lymph node colonization induces tumor-immune tolerance to promote distant metastasis. Cell 2022; 185:1924-1942.e23. [PMID: 35525247 PMCID: PMC9149144 DOI: 10.1016/j.cell.2022.04.019] [Citation(s) in RCA: 100] [Impact Index Per Article: 50.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 01/31/2022] [Accepted: 04/12/2022] [Indexed: 12/15/2022]
Abstract
For many solid malignancies, lymph node (LN) involvement represents a harbinger of distant metastatic disease and, therefore, an important prognostic factor. Beyond its utility as a biomarker, whether and how LN metastasis plays an active role in shaping distant metastasis remains an open question. Here, we develop a syngeneic melanoma mouse model of LN metastasis to investigate how tumors spread to LNs and whether LN colonization influences metastasis to distant tissues. We show that an epigenetically instilled tumor-intrinsic interferon response program confers enhanced LN metastatic potential by enabling the evasion of NK cells and promoting LN colonization. LN metastases resist T cell-mediated cytotoxicity, induce antigen-specific regulatory T cells, and generate tumor-specific immune tolerance that subsequently facilitates distant tumor colonization. These effects extend to human cancers and other murine cancer models, implicating a conserved systemic mechanism by which malignancies spread to distant organs.
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Affiliation(s)
| | - Weiruo Zhang
- Department of Biomedical Data Science, Stanford University, Stanford, CA 94305, USA
| | - Julia A Belk
- Department of Pathology, Stanford University, Stanford, CA 94305, USA
| | - Pamela A Basto
- Division of Oncology, Department of Medicine, Stanford University, Palo Alto, CA 94305, USA
| | | | | | - Alborz Bejnood
- Department of Biomedical Data Science, Stanford University, Stanford, CA 94305, USA
| | - Maria M Martins
- Department of Pathology, Stanford University, Stanford, CA 94305, USA
| | - Justin A Kenkel
- Department of Pathology, Stanford University, Stanford, CA 94305, USA
| | - Ian L Linde
- Department of Pathology, Stanford University, Stanford, CA 94305, USA
| | - Sreya Bagchi
- Department of Pathology, Stanford University, Stanford, CA 94305, USA
| | - Robert Yuan
- Department of Pathology, Stanford University, Stanford, CA 94305, USA
| | - Serena Chang
- Institute for Immunity, Transplantation, and Infection Operations, Stanford University, Palo Alto, CA 94305, USA; Department of Otolaryngology-Head & Neck Surgery, Stanford University, Palo Alto, CA 94305, USA
| | - Matthew H Spitzer
- Department of Microbiology and Immunology and Department of Otolaryngology-Head and Neck Surgery, University of California, San Francisco, CA, USA
| | - Yaron Carmi
- Department of Pathology, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Jiahan Cheng
- Department of Pathology, Stanford University, Stanford, CA 94305, USA
| | - Lorna L Tolentino
- Department of Pathology, Stanford University, Stanford, CA 94305, USA
| | - Okmi Choi
- Department of Pathology, Stanford University, Stanford, CA 94305, USA
| | - Nancy Wu
- Department of Pathology, Stanford University, Stanford, CA 94305, USA
| | - Christina S Kong
- Department of Pathology, Stanford University, Stanford, CA 94305, USA; Stanford Cancer Institute, Stanford University, Palo Alto, CA 94305, USA
| | - Andrew J Gentles
- Department of Biomedical Data Science, Stanford University, Stanford, CA 94305, USA; Department of Medicine, Stanford University, Palo Alto, CA 94305, USA
| | - John B Sunwoo
- Department of Otolaryngology-Head & Neck Surgery, Stanford University, Palo Alto, CA 94305, USA; Stanford Cancer Institute, Stanford University, Palo Alto, CA 94305, USA
| | - Ansuman T Satpathy
- Department of Pathology, Stanford University, Stanford, CA 94305, USA; Stanford Cancer Institute, Stanford University, Palo Alto, CA 94305, USA; Gladstone-UCSF Institute of Genomic Immunology, San Francisco, CA 94158, USA
| | - Sylvia K Plevritis
- Department of Biomedical Data Science, Stanford University, Stanford, CA 94305, USA; Department of Radiology, Stanford University, Palo Alto, CA 94305, USA
| | - Edgar G Engleman
- Department of Pathology, Stanford University, Stanford, CA 94305, USA; Stanford Cancer Institute, Stanford University, Palo Alto, CA 94305, USA.
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6
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YADAV R, Kumar D, Sangha S, Kumar A, Bhowmik D, Mahajan S, Bagchi S, Agarwal S. POS-821 TO STUDY THE ASSOCIATION OF SERUM VITAMIN D WITH POST -TRANSPLANT DIABETES MELLITUS (PTDM) IN KIDNEY TRANSPLANT RECIPIENTS IN INDIAN SETTINGS. Kidney Int Rep 2022. [DOI: 10.1016/j.ekir.2022.01.857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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7
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Gupta A, Bhowmik D, Kaur G, Yadav R, Bagchi S. POS-241 FRAILTY: COROLLARY OR CAUSALITY OF MALNUTRITION. Kidney Int Rep 2022. [DOI: 10.1016/j.ekir.2022.01.260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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8
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Boomadevi S, Kundu A, Anthony SP, Pandiyan K, Sastikumar D, Saxena S, Bagchi S, Chakera J. Investigations on synthesis, growth, crystal structure, thermal, Dielectric and Terahertz Transmission properties of Organic NLO Crystal : (2-(2-hydroxy-3-methoxystyryl)-1-methylquinolinium-4-methylbenzenesulfonate (O-HMQ). J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.131099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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9
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Bagchi S, Yuan R, Engleman EG. Immune Checkpoint Inhibitors for the Treatment of Cancer: Clinical Impact and Mechanisms of Response and Resistance. Annu Rev Pathol 2020; 16:223-249. [PMID: 33197221 DOI: 10.1146/annurev-pathol-042020-042741] [Citation(s) in RCA: 852] [Impact Index Per Article: 213.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Immune checkpoint inhibitors (ICIs) have made an indelible mark in the field of cancer immunotherapy. Starting with the approval of anti-cytotoxic T lymphocyte-associated protein 4 (anti-CTLA-4) for advanced-stage melanoma in 2011, ICIs-which now also include antibodies against programmed cell death 1 (PD-1) and its ligand (PD-L1)-quickly gained US Food and Drug Administration approval for the treatment of a wide array of cancer types, demonstrating unprecedented extension of patient survival. However, despite the success of ICIs, resistance to these agents restricts the number of patients able to achieve durable responses, and immune-related adverse events complicate treatment. Thus, a better understanding of the requirements for an effective and safe antitumor immune response following ICI therapy is needed. Studies of both tumoral and systemic changes in the immune system following ICI therapy have yielded insight into the basis for both efficacy and resistance. Ultimately, by building on these insights, researchers should be able to combine ICIs with other agents, or design new immunotherapies, to achieve broader and more durable efficacy as well as greater safety. Here, we review the history and clinical utility of ICIs, the mechanisms of resistance to therapy, and local and systemic immune cell changes associated with outcome.
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Affiliation(s)
- Sreya Bagchi
- Department of Pathology, Stanford University School of Medicine, Stanford, California 94304, USA; ,
| | - Robert Yuan
- Department of Pathology, Stanford University School of Medicine, Stanford, California 94304, USA; ,
| | - Edgar G Engleman
- Department of Pathology, Stanford University School of Medicine, Stanford, California 94304, USA; ,
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10
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Yuan R, Bhattacharya N, Kenkel JA, Shen J, DiMaio MA, Bagchi S, Prestwood TR, Habtezion A, Engleman EG. Enteric Glia Play a Critical Role in Promoting the Development of Colorectal Cancer. Front Oncol 2020; 10:595892. [PMID: 33282743 PMCID: PMC7691584 DOI: 10.3389/fonc.2020.595892] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 10/16/2020] [Indexed: 12/15/2022] Open
Abstract
Enteric glia are a distinct population of peripheral glial cells in the enteric nervous system that regulate intestinal homeostasis, epithelial barrier integrity, and gut defense. Given these unique attributes, we investigated the impact of enteric glia depletion on tumor development in azoxymethane/dextran sodium sulfate (AOM/DSS)-treated mice, a classical model of colorectal cancer (CRC). Depleting GFAP+ enteric glia resulted in a profoundly reduced tumor burden in AOM/DSS mice and additionally reduced adenomas in the ApcMin /+ mouse model of familial adenomatous polyposis, suggesting a tumor-promoting role for these cells at an early premalignant stage. This was confirmed in further studies of AOM/DSS mice, as enteric glia depletion did not affect the properties of established malignant tumors but did result in a marked reduction in the development of precancerous dysplastic lesions. Surprisingly, the protective effect of enteric glia depletion was not dependent on modulation of anti-tumor immunity or intestinal inflammation. These findings reveal that GFAP+ enteric glia play a critical pro-tumorigenic role during early CRC development and identify these cells as a potential target for CRC prevention.
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Affiliation(s)
- Robert Yuan
- Department of Pathology, Stanford University School of Medicine (Blood Center), Palo Alto, CA, United States
| | - Nupur Bhattacharya
- Department of Pathology, Stanford University School of Medicine (Blood Center), Palo Alto, CA, United States
| | - Justin A Kenkel
- Department of Pathology, Stanford University School of Medicine (Blood Center), Palo Alto, CA, United States
| | - Jeanne Shen
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, United States
| | - Michael A DiMaio
- Department of Pathology, Marin Medical Laboratories, Novato, CA, United States
| | - Sreya Bagchi
- Department of Pathology, Stanford University School of Medicine (Blood Center), Palo Alto, CA, United States
| | - Tyler R Prestwood
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, United States
| | - Aida Habtezion
- Division of Gastroenterology and Hepatology, School of Medicine, Stanford University, Stanford, CA, United States
| | - Edgar G Engleman
- Department of Pathology, Stanford University School of Medicine (Blood Center), Palo Alto, CA, United States
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11
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Bagchi S, Kanungo R, Tanaka YK, Geissel H, Doornenbal P, Horiuchi W, Hagen G, Suzuki T, Tsunoda N, Ahn DS, Baba H, Behr K, Browne F, Chen S, Cortés ML, Estradé A, Fukuda N, Holl M, Itahashi K, Iwasa N, Jansen GR, Jiang WG, Kaur S, Macchiavelli AO, Matsumoto SY, Momiyama S, Murray I, Nakamura T, Novario SJ, Ong HJ, Otsuka T, Papenbrock T, Paschalis S, Prochazka A, Scheidenberger C, Schrock P, Shimizu Y, Steppenbeck D, Sakurai H, Suzuki D, Suzuki H, Takechi M, Takeda H, Takeuchi S, Taniuchi R, Wimmer K, Yoshida K. Two-Neutron Halo is Unveiled in ^{29}F. Phys Rev Lett 2020; 124:222504. [PMID: 32567915 DOI: 10.1103/physrevlett.124.222504] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 04/17/2020] [Accepted: 05/08/2020] [Indexed: 06/11/2023]
Abstract
We report the measurement of reaction cross sections (σ_{R}^{ex}) of ^{27,29}F with a carbon target at RIKEN. The unexpectedly large σ_{R}^{ex} and derived matter radius identify ^{29}F as the heaviest two-neutron Borromean halo to date. The halo is attributed to neutrons occupying the 2p_{3/2} orbital, thereby vanishing the shell closure associated with the neutron number N=20. The results are explained by state-of-the-art shell model calculations. Coupled-cluster computations based on effective field theories of the strong nuclear force describe the matter radius of ^{27}F but are challenged for ^{29}F.
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Affiliation(s)
- S Bagchi
- Astronomy and Physics Department, Saint Mary's University, Halifax, Nova Scotia B3H 3C3, Canada
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
- Justus-Liebig University, 35392 Giessen, Germany
| | - R Kanungo
- Astronomy and Physics Department, Saint Mary's University, Halifax, Nova Scotia B3H 3C3, Canada
- TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
| | - Y K Tanaka
- Astronomy and Physics Department, Saint Mary's University, Halifax, Nova Scotia B3H 3C3, Canada
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
- Justus-Liebig University, 35392 Giessen, Germany
| | - H Geissel
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
- Justus-Liebig University, 35392 Giessen, Germany
| | - P Doornenbal
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - W Horiuchi
- Department of Physics, Hokkaido University, Sapporo 060-0810, Japan
| | - G Hagen
- Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - T Suzuki
- Department of Physics, Nihon University, Setagaya-ku, Tokyo 156-8550, Japan
| | - N Tsunoda
- Center for Nuclear Study, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - D S Ahn
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - H Baba
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - K Behr
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - F Browne
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - S Chen
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - M L Cortés
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - A Estradé
- Department of Physics, Central Michigan University, Mount Pleasant, Michigan 48859, USA
| | - N Fukuda
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - M Holl
- Astronomy and Physics Department, Saint Mary's University, Halifax, Nova Scotia B3H 3C3, Canada
- TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
| | - K Itahashi
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - N Iwasa
- Department of Physics, Tohoku University, Miyagi 980-8577, Japan
| | - G R Jansen
- Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
- National Center for Computational Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - W G Jiang
- Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - S Kaur
- Astronomy and Physics Department, Saint Mary's University, Halifax, Nova Scotia B3H 3C3, Canada
- Department of Physics and Atmospheric Science, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | - A O Macchiavelli
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - S Y Matsumoto
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - S Momiyama
- Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - I Murray
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
- Institut de Physique Nucleaire, IN2P3, CNRS, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - T Nakamura
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - S J Novario
- Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - H J Ong
- RCNP, Osaka University, Mihogaoka, Ibaraki, Osaka 567 0047, Japan
| | - T Otsuka
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
- Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - T Papenbrock
- Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - S Paschalis
- Department of Physics, University of York, Heslington, York YO10 5DD, United Kingdom
| | - A Prochazka
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - C Scheidenberger
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
- Justus-Liebig University, 35392 Giessen, Germany
| | - P Schrock
- Center for Nuclear Study, University of Tokyo, RIKEN Campus, Wako, Saitama 351-0198, Japan
| | - Y Shimizu
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - D Steppenbeck
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
- Center for Nuclear Study, University of Tokyo, RIKEN Campus, Wako, Saitama 351-0198, Japan
| | - H Sakurai
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
- Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - D Suzuki
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - H Suzuki
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - M Takechi
- Graduate School of Science and Technology, Niigata University, Niigata 950-2102, Japan
| | - H Takeda
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - S Takeuchi
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - R Taniuchi
- Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
- Department of Physics, University of York, Heslington, York YO10 5DD, United Kingdom
| | - K Wimmer
- Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - K Yoshida
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
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12
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Tanaka M, Takechi M, Homma A, Fukuda M, Nishimura D, Suzuki T, Tanaka Y, Moriguchi T, Ahn DS, Aimaganbetov A, Amano M, Arakawa H, Bagchi S, Behr KH, Burtebayev N, Chikaato K, Du H, Ebata S, Fujii T, Fukuda N, Geissel H, Hori T, Horiuchi W, Hoshino S, Igosawa R, Ikeda A, Inabe N, Inomata K, Itahashi K, Izumikawa T, Kamioka D, Kanda N, Kato I, Kenzhina I, Korkulu Z, Kuk Y, Kusaka K, Matsuta K, Mihara M, Miyata E, Nagae D, Nakamura S, Nassurlla M, Nishimuro K, Nishizuka K, Ohnishi K, Ohtake M, Ohtsubo T, Omika S, Ong HJ, Ozawa A, Prochazka A, Sakurai H, Scheidenberger C, Shimizu Y, Sugihara T, Sumikama T, Suzuki H, Suzuki S, Takeda H, Tanaka YK, Tanihata I, Wada T, Wakayama K, Yagi S, Yamaguchi T, Yanagihara R, Yanagisawa Y, Yoshida K, Zholdybayev TK. Swelling of Doubly Magic ^{48}Ca Core in Ca Isotopes beyond N=28. Phys Rev Lett 2020; 124:102501. [PMID: 32216444 DOI: 10.1103/physrevlett.124.102501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 12/20/2019] [Accepted: 01/30/2020] [Indexed: 06/10/2023]
Abstract
Interaction cross sections for ^{42-51}Ca on a carbon target at 280 MeV/nucleon have been measured for the first time. The neutron number dependence of derived root-mean-square matter radii shows a significant increase beyond the neutron magic number N=28. Furthermore, this enhancement of matter radii is much larger than that of the previously measured charge radii, indicating a novel growth in neutron skin thickness. A simple examination based on the Fermi-type distribution, and mean field calculations point out that this anomalous enhancement of the nuclear size beyond N=28 results from an enlargement of the core by a sudden increase in the surface diffuseness of the neutron density distribution, which implies the swelling of the bare ^{48}Ca core in Ca isotopes beyond N=28.
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Affiliation(s)
- M Tanaka
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
- Research Center for Superheavy Elements, Kyushu University, Fukuoka 819-0395, Japan
| | - M Takechi
- Department of Physics, Niigata University, Ikarashi, Niigata 951-2181, Japan
| | - A Homma
- Department of Physics, Niigata University, Ikarashi, Niigata 951-2181, Japan
| | - M Fukuda
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - D Nishimura
- Department of Physics, Tokyo City University, Setagaya, Tokyo 158-8557, Japan
| | - T Suzuki
- Department of Physics, Saitama University, Saitama 338-8570, Japan
| | - Y Tanaka
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - T Moriguchi
- Institute of Physics, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - D S Ahn
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - A Aimaganbetov
- Institute of Nuclear Physics, 050032 Almaty, Kazakhstan
- L.N. Gumilyov Eurasian National University, 010008 Astana, Kazakhstan
| | - M Amano
- Institute of Physics, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - H Arakawa
- Department of Physics, Saitama University, Saitama 338-8570, Japan
| | - S Bagchi
- Astronomy and Physics Department, Saint Mary's University, Halifax, Nova Scotia B3H 3C3, Canada
- Justus Liebig University, 35392 Giessen, Germany
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
| | - K-H Behr
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
| | - N Burtebayev
- Institute of Nuclear Physics, 050032 Almaty, Kazakhstan
| | - K Chikaato
- Department of Physics, Niigata University, Ikarashi, Niigata 951-2181, Japan
| | - H Du
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - S Ebata
- Department of Physics, Saitama University, Saitama 338-8570, Japan
- School of Environment and Society, Tokyo Institute of Technology, Meguro, Tokyo 152-8551, Japan
| | - T Fujii
- Department of Physics, Saitama University, Saitama 338-8570, Japan
| | - N Fukuda
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - H Geissel
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
| | - T Hori
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - W Horiuchi
- Department of Physics, Hokkaido University, Sapporo 060-0810, Japan
| | - S Hoshino
- Department of Physics, Niigata University, Ikarashi, Niigata 951-2181, Japan
| | - R Igosawa
- Department of Physics, Saitama University, Saitama 338-8570, Japan
| | - A Ikeda
- Department of Physics, Niigata University, Ikarashi, Niigata 951-2181, Japan
| | - N Inabe
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - K Inomata
- Department of Physics, Saitama University, Saitama 338-8570, Japan
| | - K Itahashi
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - T Izumikawa
- Institute for Research Promotion, Niigata University, Niigata 950-8510, Japan
| | - D Kamioka
- Institute of Physics, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - N Kanda
- Department of Physics, Niigata University, Ikarashi, Niigata 951-2181, Japan
| | - I Kato
- Department of Physics, Saitama University, Saitama 338-8570, Japan
| | - I Kenzhina
- Institute of Nuclear Physics, 050032 Almaty, Kazakhstan
- Al-Farabi Kazakh National University, 050040 Almaty, Kazakhstan
| | - Z Korkulu
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - Y Kuk
- Institute of Nuclear Physics, 050032 Almaty, Kazakhstan
- L.N. Gumilyov Eurasian National University, 010008 Astana, Kazakhstan
| | - K Kusaka
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - K Matsuta
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - M Mihara
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - E Miyata
- Department of Physics, Niigata University, Ikarashi, Niigata 951-2181, Japan
| | - D Nagae
- Research Center for Superheavy Elements, Kyushu University, Fukuoka 819-0395, Japan
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - S Nakamura
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - M Nassurlla
- Institute of Nuclear Physics, 050032 Almaty, Kazakhstan
- Al-Farabi Kazakh National University, 050040 Almaty, Kazakhstan
| | - K Nishimuro
- Department of Physics, Saitama University, Saitama 338-8570, Japan
| | - K Nishizuka
- Department of Physics, Niigata University, Ikarashi, Niigata 951-2181, Japan
| | - K Ohnishi
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - M Ohtake
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - T Ohtsubo
- Department of Physics, Niigata University, Ikarashi, Niigata 951-2181, Japan
| | - S Omika
- Department of Physics, Saitama University, Saitama 338-8570, Japan
| | - H J Ong
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - A Ozawa
- Institute of Physics, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - A Prochazka
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
| | - H Sakurai
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
- Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - C Scheidenberger
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
| | - Y Shimizu
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - T Sugihara
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - T Sumikama
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - H Suzuki
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - S Suzuki
- Institute of Physics, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - H Takeda
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - Y K Tanaka
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
| | - I Tanihata
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
- School of Physics and Nuclear Energy Engineering, Beihang University, 100191 Beijing, China
| | - T Wada
- Department of Physics, Niigata University, Ikarashi, Niigata 951-2181, Japan
| | - K Wakayama
- Department of Physics, Saitama University, Saitama 338-8570, Japan
| | - S Yagi
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - T Yamaguchi
- Department of Physics, Saitama University, Saitama 338-8570, Japan
- Tomonaga Center for the History of the Universe, University of Tsukuba, Ibaraki 305-8571, Japan
| | - R Yanagihara
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Y Yanagisawa
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - K Yoshida
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
| | - T K Zholdybayev
- Institute of Nuclear Physics, 050032 Almaty, Kazakhstan
- Al-Farabi Kazakh National University, 050040 Almaty, Kazakhstan
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Caamaño M, Roger T, Moro AM, Grinyer GF, Pancin J, Bagchi S, Sambi S, Gibelin J, Itagaki N, Fernández–Domínguez B, Benlliure J, Cortina-Gil D, Farget F, Jacquot B, Pérez Loureiro D, Pietras B, Raabe R, Ramos D, Rodríguez–Tajes C, Savajols H, Vandebrouck M. Structure of superheavy hydrogen 7H. EPJ Web Conf 2020. [DOI: 10.1051/epjconf/202023204002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The properties of nuclei with extreme neutron–to–proton ratios reveal the limitations of state-ofthe-art nuclear models and are key to understand nuclear forces. 7H, with six neutrons and a single proton, is the nuclear system with the most unbalanced neutron–to–proton ratio ever known, but its sheer existence and properties are still a challenge for experimental efforts and theoretical models. We report here the first measurement of the basic characteristics and structure of the ground state of 7H; they depict a system with a triton core surrounded by an extended four-neutron halo, built by neutron pairing, that decays through a unique four–neutron emission with a relatively long half-life. These properties are a prime example of new phenomena occurring in almost pure-neutron nuclear matter, beyond the binding limits of the nuclear landscape, that are yet to be described within our current models.
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Bagchi S, Genardi S, Wang CR. Linking CD1-Restricted T Cells With Autoimmunity and Dyslipidemia: Lipid Levels Matter. Front Immunol 2018; 9:1616. [PMID: 30061888 PMCID: PMC6055000 DOI: 10.3389/fimmu.2018.01616] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 06/29/2018] [Indexed: 11/13/2022] Open
Abstract
Dyslipidemia, or altered blood lipid content, is a risk factor for developing cardiovascular disease. Furthermore, several autoimmune diseases, including systemic lupus erythematosus, psoriasis, diabetes, and rheumatoid arthritis, are correlated highly with dyslipidemia. One common thread between both autoimmune diseases and altered lipid levels is the presence of inflammation, suggesting that the immune system might act as the link between these related pathologies. Deciphering the role of innate and adaptive immune responses in autoimmune diseases and, more recently, obesity-related inflammation, have been active areas of research. The broad picture suggests that antigen-presenting molecules, which present self-peptides to autoreactive T cells, can result in either aggravation or amelioration of inflammation. However, very little is known about the role of self-lipid reactive T cells in dyslipidemia-associated autoimmune events. Given that a range of autoimmune diseases are linked to aberrant lipid profiles and a majority of lipid-specific T cells are reactive to self-antigens, it is important to examine the role of these T cells in dyslipidemia-related autoimmune ailments and determine if dysregulation of these T cells can be drivers of autoimmune conditions. CD1 molecules present lipids to T cells and are divided into two groups based on sequence homology. To date, most of the information available on lipid-reactive T cells comes from the study of group 2 CD1d-restricted natural killer T (NKT) cells while T cells reactive to group 1 CD1 molecules remain understudied, despite their higher abundance in humans compared to NKT cells. This review evaluates the mechanisms by which CD1-reactive, self-lipid specific T cells contribute to dyslipidemia-associated autoimmune disease progression or amelioration by examining available literature on NKT cells and highlighting recent progress made on the study of group 1 CD1-restricted T cells.
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Affiliation(s)
| | | | - Chyung-Ru Wang
- Department of Microbiology and Immunology, Northwestern University, Chicago, IL, United States
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15
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Shah A, Stelzle D, Lee K, Alam S, Clifford S, Longenecker C, Strachan F, Bagchi S, Whiteley W, Rajagopalan S, Kottilil S, Nair H, Newby D, McAllister D, Mills N. P448Global burden of cardiovascular disease in people living with the human immunodeficiency virus. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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16
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Bagchi S, He Y, Zhang H, Cao L, Van Rhijn I, Moody DB, Gudjonsson JE, Wang CR. CD1b-autoreactive T cells contribute to hyperlipidemia-induced skin inflammation in mice. J Clin Invest 2017; 127:2339-2352. [PMID: 28463230 DOI: 10.1172/jci92217] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Accepted: 03/03/2017] [Indexed: 01/09/2023] Open
Abstract
A large proportion of human T cells are autoreactive to group 1 CD1 proteins, which include CD1a, CD1b, and CD1c. However, the physiological role of the CD1 proteins remains poorly defined. Here, we have generated a double-transgenic mouse model that expresses human CD1b and CD1c molecules (hCD1Tg) as well as a CD1b-autoreactive TCR (HJ1Tg) in the ApoE-deficient background (hCD1Tg HJ1Tg Apoe-/- mice) to determine the role of CD1-autoreactive T cells in hyperlipidemia-associated inflammatory diseases. We found that hCD1Tg HJ1Tg Apoe-/- mice spontaneously developed psoriasiform skin inflammation characterized by T cell and neutrophil infiltration and a Th17-biased cytokine response. Anti-IL-17A treatment ameliorated skin inflammation in vivo. Additionally, phospholipids and cholesterol preferentially accumulated in diseased skin and these autoantigens directly activated CD1b-autoreactive HJ1 T cells. Furthermore, hyperlipidemic serum enhanced IL-6 secretion by CD1b+ DCs and increased IL-17A production by HJ1 T cells. In psoriatic patients, the frequency of CD1b-autoreactive T cells was increased compared with that in healthy controls. Thus, this study has demonstrated the pathogenic role of CD1b-autoreactive T cells under hyperlipidemic conditions in a mouse model of spontaneous skin inflammation. As a large proportion of psoriatic patients are dyslipidemic, this finding is of clinical significance and indicates that self-lipid-reactive T cells might serve as a possible link between hyperlipidemia and psoriasis.
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Affiliation(s)
- Sreya Bagchi
- Department of Microbiology and Immunology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Ying He
- Department of Microbiology and Immunology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Hong Zhang
- Department of Microbiology and Immunology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Liang Cao
- Department of Microbiology and Immunology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Ildiko Van Rhijn
- Department of Medicine, Division of Rheumatology, Immunology and Allergy, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.,Department of Infectious Diseases and Immunology, School of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
| | - D Branch Moody
- Department of Medicine, Division of Rheumatology, Immunology and Allergy, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | | | - Chyung-Ru Wang
- Department of Microbiology and Immunology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
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Agarwal SK, Bhowmik D, Mahajan S, Bagchi S. Pegylated interferon monotherapy for hepatitis C virus infection in patients on hemodialysis: A single center study. Indian J Nephrol 2016; 26:244-51. [PMID: 27512295 PMCID: PMC4964683 DOI: 10.4103/0971-4065.172228] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
There is no published study from India on hepatitis C virus (HCV) treatment in dialysis patients. Patients on dialysis with HCV infection treated with pegylated interferon (Peg-INF) monotherapy were studied. All patients were subjected to HCV-polymerase chain reaction, viral load, genotype, and liver biopsy. Quantitative HCV-RNA was performed monthly. Patients with genotype 1 and 4 were given 12 month therapy while those with genotypes 2 and 3 were given 6 months therapy. Response was classified as per standard criteria of rapid virological response (RVR), early virological response (EVR), end of treatment response (ETR), and sustained virological response (SVR). A total of 85 patients were treated. Mean age was 35.2 ± 10.5 (range 15-67) years, and 77.6% were males. HCV genotypes were 1 in 40.9%, 2 in 12%, 3 in 36.1%, 4 in 3.6%, and others in 7.2%. Mean viral load was 10(6) copies/mL. Mean liver biopsy grade was 4 ± 1.7 and stage 0.8 ± 0.8. Mean time from diagnosis of HCV infection and the treatment start was 10.7 ± 14.3 months. One patient died of unrelated illness, one was lost to follow-up, and three could not sustain treatment due to cost. Forty-three of the 80 (54%) patients had RVR while 49 (61%) patients had EVR and ETR. There was no difference in term of RVR related to genotype. Fifty -four percentage had SVR. Mild flu-like symptoms were seen in all patients. Sixty-four (80%) patients required increase in erythropoietin doses. Twenty-eight (35%) patients developed leukopenia (three treatment-limiting) and 16 (20%) developed thrombocytopenia (one treatment-limiting). Five patients developed tuberculosis, five bacterial pneumonia, and one bacterial knee monoarthritis. None of the patients developed depression. Our study concludes that Peg-INF monotherapy resulted in 54% RVR and SVR in dialysis patients with HCV infection. Therapy was well-tolerated with minimal side effects. There was no effect of viral genotype on response to therapy.
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Affiliation(s)
- S K Agarwal
- Department of Nephrology, All India Institute of Medical Sciences, New Delhi, India
| | - D Bhowmik
- Department of Nephrology, All India Institute of Medical Sciences, New Delhi, India
| | - S Mahajan
- Department of Nephrology, All India Institute of Medical Sciences, New Delhi, India
| | - S Bagchi
- Department of Nephrology, All India Institute of Medical Sciences, New Delhi, India
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Bagchi S, Li S, Wang CR. CD1b-autoreactive T cells recognize phospholipid antigens and contribute to antitumor immunity against a CD1b + T cell lymphoma. Oncoimmunology 2016; 5:e1213932. [PMID: 27757307 DOI: 10.1080/2162402x.2016.1213932] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 07/08/2016] [Accepted: 07/11/2016] [Indexed: 12/21/2022] Open
Abstract
Adoptive immunotherapy for cancer treatment is an emerging field of study. Till now, several tumor-derived, peptide-specific T cell responses have been harnessed for treating cancers. However, the contribution of lipid-specific T cells in tumor immunity has been understudied. CD1 molecules, which present self- and foreign lipid antigens to T cells, are divided into group 1 (CD1a, CD1b, and CD1c) and group 2 (CD1d). Although the role of CD1d-restricted natural killer T cells (NKT) in several tumor models has been well established, the contribution of group 1 CD1-restricted T cells in tumor immunity remains obscure due to the lack of group 1 CD1 expression in mice. In this study, we used a double transgenic mouse model expressing human group 1 CD1 molecules (hCD1Tg) and a CD1b-restricted, self-lipid reactive T cell receptor (HJ1Tg) to study the potential role of group 1 CD1-restricted autoreactive T cells in antitumor response. We found that HJ1 T cells recognized phospholipids and responded more potently to lipid extracted from tumor cells than the equivalent amount of lipids extracted from normal cells. Additionally, the autoreactivity of HJ1 T cells was enhanced upon treatment with various intracellular toll-like receptor (TLR) agonists, including CpG oligodeoxynucleotides (ODN), R848, and poly (I:C). Interestingly, the adoptive transfer of HJ1 T cells conferred protection against the CD1b-transfected murine T cell lymphoma (RMA-S/CD1b) and CpG ODN enhanced the antitumor effect. Thus, this study, for the first time, demonstrates the antitumor potential of CD1b-autoreactive T cells and their potential use in adoptive immunotherapy.
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Affiliation(s)
- Sreya Bagchi
- Department of Microbiology and Immunology, Northwestern University , Chicago, IL, USA
| | - Sha Li
- Department of Microbiology and Immunology, Northwestern University, Chicago, IL, USA; Department of Microbiology, Cornell University, Ithaca, NY, USA
| | - Chyung-Ru Wang
- Department of Microbiology and Immunology, Northwestern University , Chicago, IL, USA
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19
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Singh A, Das CJ, Gupta AK, Bagchi S. Role of diffusion weighted imaging in diagnosis of post transplant lymphoproliferative disorders: Case reports and review of literature. Indian J Nephrol 2016; 26:212-5. [PMID: 27194838 PMCID: PMC4862269 DOI: 10.4103/0971-4065.163430] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Post transplant lymphoproliferative disorder include a spectrum of conditions occurring in immunosuppressed post transplant recipients, lymphoma being the most ominous. 18F-fludeoxyglucose positron emission tomography with computed tomography CT) is the current imaging gold standard for lymphoma imaging as it allows both morphological and functional assessment. CT and/or conventional magnetic resonance imaging (MRI) are used for morphological evaluation in transplant recipients. Integrating diffusion weighted imaging with apparent diffusion coefficient analysis in MRI protocol enhances its sensitivity and may prove invaluable in response assessment in transplant recipients.
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Affiliation(s)
- A Singh
- Department of Radiology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India
| | - C J Das
- Department of Radiology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India
| | - A K Gupta
- Department of Radiology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India
| | - S Bagchi
- Department of Nephrology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India
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20
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Bagchi S, Jayaram Kumar K. Studies on water soluble polysaccharides from Pithecellobium dulce (Roxb.) Benth. seeds. Carbohydr Polym 2016; 138:215-21. [DOI: 10.1016/j.carbpol.2015.11.018] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2015] [Revised: 10/27/2015] [Accepted: 11/06/2015] [Indexed: 12/28/2022]
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21
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Zhao J, Siddiqui S, Shang S, Bian Y, Bagchi S, He Y, Wang CR. Mycolic acid-specific T cells protect against Mycobacterium tuberculosis infection in a humanized transgenic mouse model. eLife 2015; 4. [PMID: 26652001 PMCID: PMC4718816 DOI: 10.7554/elife.08525] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Accepted: 11/01/2015] [Indexed: 11/25/2022] Open
Abstract
Group 1 CD1 molecules, CD1a, CD1b and CD1c, present lipid antigens from Mycobacterium tuberculosis (Mtb) to T cells. Mtb lipid-specific group 1 CD1-restricted T cells have been detected in Mtb-infected individuals. However, their role in protective immunity against Mtb remains unclear due to the absence of group 1 CD1 expression in mice. To overcome the challenge, we generated mice that expressed human group 1 CD1 molecules (hCD1Tg) and a CD1b-restricted, mycolic-acid specific TCR (DN1Tg). Using DN1Tg/hCD1Tg mice, we found that activation of DN1 T cells was initiated in the mediastinal lymph nodes and showed faster kinetics compared to Mtb Ag85B-specific CD4+ T cells after aerosol infection with Mtb. Additionally, activated DN1 T cells exhibited polyfunctional characteristics, accumulated in lung granulomas, and protected against Mtb infection. Therefore, our findings highlight the vaccination potential of targeting group 1 CD1-restricted lipid-specific T cells against Mtb infection. DOI:http://dx.doi.org/10.7554/eLife.08525.001 Most cases of tuberculosis are caused by a bacterium called Mycobacterium tuberculosis, which is believed to have infected one third of the world’s population. Most of these infections are dormant and don’t cause any symptoms. However, active infections can be deadly if left untreated and often require six months of treatment with multiple antibiotics. One reason why these infections are so difficult to treat is because the M. tuberculosis cell walls contain fatty molecules known as mycolic acids, which make the bacteria less susceptible to antibiotics. These molecules also help the bacteria to subvert and then hide from the immune system. The prevalence of the disease and the increasing problem of antibiotic resistance have spurred the search for an effective vaccine against tuberculosis. While most efforts have focused on using protein fragments in tuberculosis vaccines, some evidence suggests that human immune cells can recognize fatty molecules such as mycolic acids and that these cells could help manage and control M. tuberculosis infections. However, it has been difficult to determine whether these immune cells genuinely play a protective role against the disease because most vaccine research uses mouse models and mice do not have an equivalent of these immune cells. Now, Zhao et al. have engineered a “humanized” mouse model that produces the fatty molecule-specific immune cells, and show that these mice do respond to the presence of mycolic acids. Infecting the genetically engineered mice with M. tuberculosis revealed that the fatty molecule-specific immune cells were quickly activated within lymph nodes at the center of the chest. These cells later accumulated at sites in the lung where the bacteria reside, and ultimately protected against M. tuberculosis infection. The results show that these specific immune cells can counteract M. tuberculosis, and highlight the potential of using mycolic acids to generate an effective vaccine that provides protection against tuberculosis. DOI:http://dx.doi.org/10.7554/eLife.08525.002
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Affiliation(s)
- Jie Zhao
- Department of Microbiology and Immunology, Northwestern University, Chicago, United States
| | - Sarah Siddiqui
- Department of Microbiology and Immunology, Northwestern University, Chicago, United States
| | - Shaobin Shang
- Department of Microbiology and Immunology, Northwestern University, Chicago, United States
| | - Yao Bian
- Department of Microbiology and Immunology, Northwestern University, Chicago, United States
| | - Sreya Bagchi
- Department of Microbiology and Immunology, Northwestern University, Chicago, United States
| | - Ying He
- Department of Microbiology and Immunology, Northwestern University, Chicago, United States
| | - Chyung-Ru Wang
- Department of Microbiology and Immunology, Northwestern University, Chicago, United States
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Bagchi S, Tayyab M, Ramakrishna B, Upadhyay A, Mandal T, Chakera JA, Naik PA, Gupta PD. Micrometer-sized negative-ion accelerator based on ultrashort laser pulse interaction with transparent solids. Phys Rev E Stat Nonlin Soft Matter Phys 2015; 92:051103. [PMID: 26651640 DOI: 10.1103/physreve.92.051103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Indexed: 06/05/2023]
Abstract
We report here energetic (>100 keV) negative hydrogen ions (H(-)) generated in the interaction of moderately intense (10(18) W cm(-2)) ultrashort laser pulses (45 fs) with transparent hydrogen containing solid targets. An unambiguous and consistent detection of negative hydrogen ions, with a flux of 8×10(11)H(-) ions/sr, has been observed in every single laser shot, using a Thomson parabola ion spectrograph. Simple estimates based on charge transfer cross sections match well with experimental observations. Our method offers the implementation of an intense, ultrashort laser based negative-ion source at a higher repetition rate, which can be important for various applications.
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Affiliation(s)
- S Bagchi
- Laser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, India
| | - M Tayyab
- Laser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, India
| | - B Ramakrishna
- Laser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, India
| | - A Upadhyay
- Laser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, India
| | - T Mandal
- Laser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, India
| | - J A Chakera
- Laser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, India
| | - P A Naik
- Laser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, India
| | - P D Gupta
- Laser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, India
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Bagchi S, Zhang H, He Y, Wang CR. Self-lipid specific T cells, restricted by CD1b, contribute to the development of hyperlipidemia-associated skin inflammation (BA11P.133). The Journal of Immunology 2015. [DOI: 10.4049/jimmunol.194.supp.184.15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
Psoriasis, a chronic inflammatory skin disease, is associated with hyperlipidemia. While conventional T cells usually exacerbate psoriasis, the role of self-lipid reactive CD1-restricted T cells requires further study. CD1 molecules present lipid antigens to T cells and are divided in to two groups. Group 1 includes CD1a, CD1b, CD1c while CD1d belongs to group 2. Humans express both group 1 and group 2 CD1 molecules whereas mice only have CD1d. Thus, due to the lack of a suitable animal model, the role of autoreactive group 1 CD1-restricted T cells in hyperlipidemia-associated inflammatory diseases is unknown. To overcome this challenge, our lab generated mice that expressed human CD1b and a CD1b-autoreactive T cell receptor (hCD1Tg/HJ1Tg). hCD1Tg/HJ1Tg mice were crossed to the ApoE-/- background to examine the role of CD1b-restricted T cells in hyperlipidemia (hCD1Tg/HJ1Tg/ApoE-/-). Interestingly, hCD1Tg/HJ1Tg/ApoE-/- mice developed severe psoriasis-like skin inflammation characterized by T cell and neutrophil infiltration along with a Th17-biased cytokine milieu. They also showed significantly increased polar lipid accumulation in the skin as compared to hCD1Tg/HJ1Tg/ApoE+ mice. This suggested that the presence of excessive lipids in the skin resulted in activation of CD1b-autoreacitve T cells, leading to the onset of skin pathology. This work demonstrates that autoreactive group 1 CD1-reactive T cells might serve as a link between inflammatory processes and hyperlipidemia.
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Affiliation(s)
- Sreya Bagchi
- 1Microbiology-Immunology, Northwestern Univ., Chicago, IL
| | - Hong Zhang
- 1Microbiology-Immunology, Northwestern Univ., Chicago, IL
| | - Ying He
- 1Microbiology-Immunology, Northwestern Univ., Chicago, IL
| | - Chyung-Ru Wang
- 1Microbiology-Immunology, Northwestern Univ., Chicago, IL
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Weng X, Liao CM, Bagchi S, Cardell SL, Stein PL, Wang CR. The adaptor protein SAP regulates type II NKT-cell development, cytokine production, and cytotoxicity against lymphoma. Eur J Immunol 2014; 44:3646-57. [PMID: 25236978 DOI: 10.1002/eji.201444848] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Revised: 08/19/2014] [Accepted: 09/16/2014] [Indexed: 11/09/2022]
Abstract
CD1d-restricted NKT cells represent a unique lineage of immunoregulatory T cells that are divided into two groups, type I and type II, based on their TCR usage. Because there are no specific tools to identify type II NKT cells, little is known about their developmental requirements and functional regulation. In our previous study, we showed that signaling lymphocytic activation molecule associated protein (SAP) is essential for the development of type II NKT cells. Here, using a type II NKT-cell TCR transgenic mouse model, we demonstrated that CD1d-expressing hematopoietic cells, but not thymic epithelial cells, meditate efficient selection of type II NKT cells. Furthermore, we showed that SAP regulates type II NKT-cell development by controlling early growth response 2 protein and promyelocytic leukemia zinc finger expression. SAP-deficient 24αβ transgenic T cells (24αβ T cells) exhibited an immature phenotype with reduced Th2 cytokine-producing capacity and diminished cytotoxicity to CD1d-expressing lymphoma cells. The impaired IL-4 production by SAP-deficient 24αβ T cells was associated with reduced IFN regulatory factor 4 and GATA-3 induction following TCR stimulation. Collectively, these data suggest that SAP is critical for regulating type II NKT cell responses. Aberrant responses of these T cells may contribute to the immune dysregulation observed in X-linked lymphoproliferative disease caused by mutations in SAP.
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Affiliation(s)
- Xiufang Weng
- Department of Microbiology and Immunology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
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Tayyab M, Bagchi S, Ramakrishna B, Mandal T, Upadhyay A, Ramis R, Chakera JA, Naik PA, Gupta PD. Role of target material in proton acceleration from thin foils irradiated by ultrashort laser pulses. Phys Rev E Stat Nonlin Soft Matter Phys 2014; 90:023103. [PMID: 25215835 DOI: 10.1103/physreve.90.023103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Indexed: 06/03/2023]
Abstract
We report on the proton acceleration studies from thin metallic foils of varying atomic number (Z) and thicknesses, investigated using a 45 fs, 10 TW Ti:sapphire laser system. An optimum foil thickness was observed for efficient proton acceleration for our laser conditions, dictated by the laser ASE prepulse and hot electron propagation behavior inside the material. The hydrodynamic simulations for ASE prepulse support the experimental observation. The observed maximum proton energy at different thicknesses for a given element is in good agreement with the reported scaling laws. The results with foils of different atomic number Z suggest that a judicious choice of the foil material can enhance the proton acceleration efficiency, resulting into higher proton energy.
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Affiliation(s)
- M Tayyab
- Laser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, India
| | - S Bagchi
- Laser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, India
| | - B Ramakrishna
- Laser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, India
| | - T Mandal
- Laser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, India
| | - A Upadhyay
- Laser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, India
| | - R Ramis
- E.T.S.I. Aeronáuticos, Universidad Politécnica de Madrid, 28040 Madrid, Spain
| | - J A Chakera
- Laser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, India
| | - P A Naik
- Laser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, India
| | - P D Gupta
- Laser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, India
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Bagchi S, Sachdev SS, Nalwa A, Das CJ, Sinha S, Suri V, Mahajan S, Bhowmik D, Agarwal S. Multiple intracranial space-occupying lesions in a renal transplant recipient from an area endemic for tuberculosis (TB): TB vs. toxoplasmosis. Transpl Infect Dis 2014; 16:838-42. [PMID: 25040057 DOI: 10.1111/tid.12262] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Revised: 03/05/2014] [Accepted: 04/18/2014] [Indexed: 11/28/2022]
Abstract
Renal transplant recipients may present with intracranial space-occupying lesions (SOLs) due to infections as well as a post-transplant lymphoproliferative disorder (PTLD). Here, we discuss a renal transplant recipient who presented with neurologic symptoms and magnetic resonance imaging (MRI) of the brain showed multiple focal SOLs. Tuberculosis (TB), toxoplasmosis, nocardiosis, fungal infections, and PTLD were considered in the differential diagnosis. MRI spectroscopy was suggestive of an infectious cause, such as toxoplasmosis or TB. Serologic tests using Toxoplasma were negative. A brain biopsy followed by immunohistochemical staining using Toxoplasma antibody demonstrated multiple intravascular cysts of toxoplasma. This case highlights the diagnostic dilemma in an immunocompromised patient with multiple focal brain lesions, especially in areas where TB is endemic.
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Affiliation(s)
- S Bagchi
- Department of Nephrology, All India Institute of Medical Sciences, New Delhi, India
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Zhao J, Bagchi S, Wang CR. Type II natural killer T cells foster the antitumor activity of CpG-oligodeoxynucleotides. Oncoimmunology 2014; 3:e28977. [PMID: 25057452 PMCID: PMC4091550 DOI: 10.4161/onci.28977] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Accepted: 04/23/2014] [Indexed: 01/15/2023] Open
Abstract
Type II natural killer T (NKT) cells in cancer immunity are typically associated with suppression of tumor immunosurveillance through secretion of IL-13. We previously demonstrated that CpG oligonucleotide therapy activated Type II NKT cells to produce T helper type 1 (Th1) rather than T helper type 2 (Th2) cytokines. This cytokine skewing may manifest in Type II NKT cell antitumor properties in an immunotherapeutic setting.
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Affiliation(s)
- Jie Zhao
- Department of Microbiology and Immunology; Feinberg School of Medicine; Northwestern University; Chicago, IL USA
| | - Sreya Bagchi
- Department of Microbiology and Immunology; Feinberg School of Medicine; Northwestern University; Chicago, IL USA
| | - Chyung-Ru Wang
- Department of Microbiology and Immunology; Feinberg School of Medicine; Northwestern University; Chicago, IL USA
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Basu M, Das P, Dhar G, Datta S, Chattopaddhyay S, Bagchi S, Pal R. Pattern and Determinants of Overweight and Obesity Among Future Physicians. Nepal J Epidemiol 2014. [DOI: 10.3126/nje.v4i1.10134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Background Overweight including obesity is a leading cause of present day morbidity and kills more people than underweight. Keeping this background in mind this study had been conducted to establish the pattern of overweight and obesity in the midst of undergraduate medical group and to find out the association of overweight (plump) and obesity with probable hazardous factors. Materials and Methods This descriptive observational study had been conducted among undergraduate medical group for the duration of May to June 2011. Simple random sampling was adopted to select the students under study. A pretested, predesigned self-administered questionnaire was utilized for data collection. Body Mass Index (BMI) was assessed through weight and height and acted as forecaster of heavy figure and or obesity. Overweight and or obesity were analyzed to see the association with certain socio-demographic variables, dietary habits, family history of overweight and or obesity, life style issues, computer use etc. After collection of data, these were analyzed using tabulation, proportion and Chi square through Epi-Info software. Results The study subjects were young adults. The general pattern of overweight (plump) and obesity was 18.0 percent and 4.0 percent respectively. Overweight and or obesity was found significantly high among male students, fast food and soft drinks takers, low takers of fruits and vegetables, alcohol consumers, students with lack of exercise and family history of obesity. Overweight and obesity were not found associated with type of diet (vegetarian or non-vegetarian) and smoking. Conclusion Presence of probable associated factors with regard to overweight (plump) and obesity exists amid medical undergraduate pupils.DOI: http://dx.doi.org/10.3126/nje.v4i1.10134 Nepal Journal of Epidemiology 2014;4 (1): 323-329
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Schmid MV, Bagchi S, Bönig S, Csatlós M, Dillmann I, Dimopoulou C, Egelhof P, Eremin V, Furuno T, Geissel H, Gernhäuser R, Harakeh MN, Hartig AL, Ilieva S, Kalantar-Nayestanaki N, Kiselev O, Kollmus H, Kozhuharov C, Krasznahorkay A, Kröll T, Kuilman M, Litvinov S, Litvinov YA, Mahjour-Shafiei M, Mutterer M, Nagae D, Najafi MA, Nociforo C, Nolden F, Popp U, Rigollet C, Roy S, Scheidenberger C, Steck M, Streicher B, Stuhl L, Thürauf M, Uesaka T, Weick H, Winfield JS, Winters D, Woods PJ, Yamaguchi T, Yue K, Zamora JC, Zenihiro J. First EXL experiment with stored radioactive beam: Proton scattering on56Ni. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20146603093] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Zhao J, Weng X, Bagchi S, Wang CR. Characterization of polyclonal type II NKT cells and their role in CpG oligodeoxynucleotides-mediated anti-tumor response (P2112). The Journal of Immunology 2013. [DOI: 10.4049/jimmunol.190.supp.132.46] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
CD1d-restricted NKT cells are innate-like T cells with potent immunomodulatory function via rapid production of both Th1 and Th2 cytokines. NKT cells comprise well-characterized type I NKT cells which can be detected by α-GalCer (α-galactosylceramide) loaded CD1d tetramer and less-studied type II NKT cells which do not recognize α-GalCer. Here we characterized type II NKT cells on a polyclonal level by using an IL-4 reporter mouse model. We found type II NKT cells, like type I NKT cells, exhibit an activated phenotype and are dependent on the transcriptional regulator PLZF (promyelocytic leukemia zinc finger) and the adaptor molecule SAP (signaling lymphocyte activation molecule-associated protein) for their development. Compared to type I NKT cells, type II NKT cells produce lower levels of IFN-γ but comparable amounts of IL-13 in response to polyclonal TCR stimulation, suggesting they may play different roles in regulating immune responses. However, type II NKT cells can be activated by CpG oligodeoxynucletides to produce IFN-γ, but not IL-4 or IL-13. Importantly, CpG-activated type II NKT cells contribute to the anti-tumor effect of CpG in the B16 melanoma model. Taken together, our data reveal the characteristics of polyclonal type II NKT cells and their potential role in anti-tumor immunotherapy.
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Affiliation(s)
- Jie Zhao
- 1Microbiology and Immunology, Feinberg Sch. of Med., Northwestern Univ., Chicago, IL
| | - Xiufang Weng
- 1Microbiology and Immunology, Feinberg Sch. of Med., Northwestern Univ., Chicago, IL
| | - Sreya Bagchi
- 1Microbiology and Immunology, Feinberg Sch. of Med., Northwestern Univ., Chicago, IL
| | - Chyung-Ru Wang
- 1Microbiology and Immunology, Feinberg Sch. of Med., Northwestern Univ., Chicago, IL
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Leela C, Bagchi S, Tewari SP, Kiran PP. Shockwave and cavitation bubble dynamics of atmospheric air. EPJ Web of Conferences 2013. [DOI: 10.1051/epjconf/20135919003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Zekker I, Vlaeminck SE, Bagchi S, Courtens E, De Clippeleir H, Kerckhof FM, Boon N. Selecting nitrifying inocula on different ammonium concentrations. Commun Agric Appl Biol Sci 2012; 77:275-279. [PMID: 22558795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Affiliation(s)
- I Zekker
- Laboratory of Microbial Ecology and Technology (LabMET), Ghent University, Coupure Links 653, 9000 Gent, Belgium
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Biswas R, Bagchi S, Urewar C, Gupta D, Nandy T. Treatment of wastewater from a low-temperature carbonization process industry through biological and chemical oxidation processes for recycle/reuse: a case study. Water Sci Technol 2010; 61:2563-2573. [PMID: 20453329 DOI: 10.2166/wst.2010.181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Low-temperature carbonization (LTC) of coal generates highly complex wastewater warranting stringent treatment. Developing a techno-economically viable treatment facility for such wastewaters is a challenging task. The paper discusses a case study pertaining to an existing non-performing effluent treatment plant (ETP). The existing ETP comprising an ammonia stripper followed by a single stage biological oxidation was unable to treat 1,050 m(3)/d of effluent as per the stipulated discharge norms. The treated effluent from the existing ETP was characterized with high concentrations of ammonia (75-345 mg N/l), COD (313-1,422 mg/l) and cyanide (0.5-4 mg/l). Studies were undertaken to facilitate recycling/reuse of the treated effluent within the plant. A second stage biooxidation process was investigated at pilot scale for the treatment of the effluent from the ETP. This was further subjected to tertiary treatment with 0.5% dose of 4% hypochlorite which resulted in effluent with pH: 6.6-6.8, COD: 73-121 mg/l, and BOD(5):<10 mg/l. Phenol, cyanide and ammonia were below detectable limits and the colourless effluent was suitable for recycle and reuse. Thus, a modified treatment scheme comprising ammonia pre-stripping followed by two-stage biooxidation process and a chemical oxidation step with hypochlorite at tertiary stage was proposed for recycle/reuse of LTC wastewater.
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Affiliation(s)
- R Biswas
- National Environmental Engineering Research Institute, Nagpur, India.
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Abstract
This paper reviews the patterns of occurrence, measurement and the effect of birth weight discordance on fetal and neonatal mortality in multiple pregnancies (twins and triplets). Birth weight discordance is fairly common among multiple pregnancies, and about one-quarter of the twin deliveries are affected by a birth weight discordance of 15%, while nearly 5% of twin gestations experience severe discordance (>or= 35%). Factors influencing birth weight discordance are exaggerated in triplet deliveries. Approximately 20% of triplet sets experience a birth weight discordance of 25 - 35% and nearly 10% experience severe forms of discordance. Frequencies of discordant sets at >25% discordance along the range of birth weight deciles show an inverse logarithmic relationship in twins, while the best-fit function in triplets is polynomial. Birth weight discordance is significantly associated with both fetal and neonatal mortality. Neonatal demise among the severely discordant smaller twin is significantly more frequent than in a non-discordant smaller twin. The magnitude of the effect is greater when one or both of the discordant twins are concomitantly small for gestational age.
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Affiliation(s)
- S Bagchi
- Department of Maternal and Child Health, University of Alabama at Birmingham, Alabama, USA
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Abstract
The Cul4A gene, which encodes a core component of a cullin-based E3 ubiquitin ligase complex, is over-expressed in breast and hepatocellular cancers. In breast cancers, over-expression of Cul4A strongly correlates with poor prognosis. Also, Cul4A is required for early embryonic development. Early lethality of mouse embryos prevented a detailed analysis of the functions of Cul4A. Here, we used a strain of mice carrying floxed alleles of Cul4A to study its role in cell division, in vitro and in vivo. Embryonic fibroblasts exhibit a severe deficiency in cell proliferation following deletion of Cul4A. We observed that the Cul4A protein is abundantly expressed in brain, liver and in the mammary tissue of pregnant mice. Deletion of Cul4A in liver impairs hepatocyte proliferation during regeneration following carbon tetrachloride induced injury. The Cul4A-deleted cells are slow in entering S phase, and are deficient in progressing through early M phase. Several cell cycle regulators, including p53 and p27Kip1, are de-regulated in the Cul4A-deleted cells. Expression of a dominant negative mutant of p53 causes significant reversal of the proliferation defects in Cul4A-deleted cells. The Cul4A-deleted cells exhibit aberrant number of centrosome, multipolar spindles and micronuclei formation. Furthermore, those cells are sensitive to UV irradiation and exhibit reduced levels of unscheduled DNA synthesis. Together, our observations indicate that Cul4A is required for efficient cell proliferation, control of the centrosome amplification and genome stability.
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Affiliation(s)
- D Kopanja
- Department of Biochemistry and Molecular Genetics, College of Medicine, University of Illinois, Chicago, IL 60607, USA
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Bagchi S. Promising results for new tuberculosis therapy. CMAJ 2008; 178:19. [DOI: 10.1503/cmaj.071681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Bagchi S. Faster malaria testing. CMAJ 2007; 177:1016. [DOI: 10.1503/cmaj.071188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Abstract
A 10-month-old female child presented with intermittent high grade fever, pain and diffuse swelling in the left knee joint with history of ecchymosis in different areas of the body. There was radiological features of acute osteomyelitis, low fibrinogen level and bacteremia due to the presence of coagulase positive staphylococcus aureus. The child responded nicely to the treatment for acute osteomyelitis and congenital hypofibrinogenemia. So, in congenital hypofibrinogenemia, a joint swelling might be a resultant of an acute osteomyelitis, not mere hemarthrosis.
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Roy SK, Roy SK, Bagchi S, Bajpayee A, Pal R, Biswas R. Study of KAP of the private medical practitioners about national disease control programmes. Indian J Public Health 2005; 49:256-7. [PMID: 16479915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023] Open
Abstract
This study was carried out among the Private Allopathic Medical Practitioners (PMPs) at Khardah Municipal area (West Bengal) to find out their perception & practice about management protocol of diseases like acute respiratory infections and diarrhoel diseases in children, malaria and tuberculosis. Data was collected by interviewing the PMPs with pre-designed open-ended questionnaire. It was supplemented by analysing sample prescriptions of the same diseases. The study revealed that PMPs knowledge and practice were not at par with national guidelines. The need for periodic sensitization of PMPs regarding national disease control programme was emphasized.
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Affiliation(s)
- S K Roy
- Dept. of PSM, MGM Medical College, Kishanganj, Bihar
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Rajeev PP, Ayyub P, Bagchi S, Kumar GR. Nanostructures, local fields, and enhanced absorption in intense light-matter interaction. Opt Lett 2004; 29:2662-2664. [PMID: 15552678 DOI: 10.1364/ol.29.002662] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Recent literature has reported impressive enhancements in hard-x-ray emission from short-lived solid plasmas by modulation of the interacting surface with nanostructures. We show that the modification of local electric fields near surface structures results in excessive absorption and enhanced x-ray production. A simple model based on local field variations explains the observed x-ray enhancements quantitatively.
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Affiliation(s)
- P P Rajeev
- Tata Institute of Fundamental Research, 1 Homi Bhabha Road, Mumbai 400 005, India
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Squillante E, Morshed G, Bagchi S, Mehta KA. Microencapsulation of beta-galactosidase with Eudragit L-100. J Microencapsul 2003; 20:153-67. [PMID: 12554371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
Microcapsules containing beta-galactosidase (lactase) were prepared by solvent evaporation using the pH sensitive polymer, Eudragit L-100. Formulations were prepared using various polymer-enzyme ratios with total solids content of the internal phase using sucrose stearate as a droplet stabilizer. Particle size distributions were invariant to relative proportion of ingredients but were dependent on stirring conditions. Although sucrose stearate had no effect on particle size distribution, release rate or encapsulation efficiency, its presence at a minimum 2% level was necessary to ensure intact microcapsules. Encapsulation efficiencies were higher for formulations prepared with 15% compared to 10% total solid content. DSC results revealed an interaction between encapsulated Eudragit L-100-enzyme-sucrose stearate vs their physical mixtures. The enzyme activities of the freshly prepared product vs those stored under stressed condition (40 degrees C and 75% RH) were 68 and 40% of their pre-processing activity, respectively. In vitro dissolution showed no enzyme release at 1 h in acidic media but 80% of the lactase was released from the microcapsules over 2.5 h in pH 6.8 media, thus establishing the feasibility of lactase microencapsulation to retard enzyme release in an acidic environment and ensuring release at intestinal pH.
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Affiliation(s)
- E Squillante
- College of Pharmacy, St John's University, 8000 Utopia Parkway, Jamaica, NY 11439, USA.
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Grey W, Katircioglu K, Bagchi S, Shi D, Gallego G, Seybold D, Stefanis S. An analytic approach for quantifying the value of e-business initiatives. ACTA ACUST UNITED AC 2003. [DOI: 10.1147/sj.423.0484] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Affiliation(s)
- E. Squillante
- College of Pharmacy, St. John's University, 8000 Utopia Parkway, JamaicaNY, 11439, USA
| | - G. Morshed
- College of Pharmacy, St. John's University, 8000 Utopia Parkway, JamaicaNY, 11439, USA
| | - S. Bagchi
- College of Pharmacy, St. John's University, 8000 Utopia Parkway, JamaicaNY, 11439, USA
| | - K. A. Mehta
- Rohm Pharma Polymers, Deguss Corporation, 2 Turner Place, Piscataway, NJ, 08855, USA
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De JK, Bagchi S, Bhadra UK, Chatterjee SN, Munshi AKD. Computerised tomographic study of tuberculous meningitis in children. J Indian Med Assoc 2002; 100:603-4, 606. [PMID: 12452514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/27/2023]
Abstract
Twenty-one patients with clinical and laboratory diagnosis of tuberculous meningitis were studied at the paediatric department and neuroradiology unit of Bangur Institute of Neurology, both attached to IPGME & R, Kolkata, during the period from 1st February, 1996 to 31 st July, 1996. The age group of the patients were between 1 and 8 years. It clearly appears that CT is an extremely powerful investigative modality for the diagnosis, management and follow-up assessment of development of any complications like hydrocephalus, cerebral infarction, etc. CT examination also can predict the prognosis of the patients.
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Affiliation(s)
- J K De
- Calcutta National Medical College, Kolkata
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Wang J, Sampath A, Raychaudhuri P, Bagchi S. Both Rb and E7 are regulated by the ubiquitin proteasome pathway in HPV-containing cervical tumor cells. Oncogene 2001; 20:4740-9. [PMID: 11498796 DOI: 10.1038/sj.onc.1204655] [Citation(s) in RCA: 80] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2001] [Revised: 05/17/2001] [Accepted: 05/23/2001] [Indexed: 12/31/2022]
Abstract
High-risk human papillomaviruses (HPVs) are etiologically linked to human cervical and oral cancers. The E6 and E7 oncoproteins encoded by HPV target host cell tumor suppressor proteins. E6 induces proteolysis of p53 through the ubiquitin-proteasome pathway. Recent studies showed that overexpression of E7 caused proteolytic degradation of the tumor suppressor Rb. However, unlike p53, Rb is not regulated by proteolysis in normal cells. In addition, it was unclear whether in its natural context E7 regulates Rb through the ubiquitin-proteasome pathway. Therefore, we sought to determine whether Rb is regulated by the ubiquitin-proteasome pathway in HPV-containing tumor cells. We carried out a detailed analysis in Caski cells, that are derived from HPV-containing cervical cancer tissues. Studies with various protease inhibitors revealed that Rb is regulated specifically by the ubiquitin-proteasome pathway in HPV-containing cervical tumor cells. Several inhibitors of the 26S proteasome significantly increased the level of Rb in the Caski cells. Rb controls cell growth by forming complexes with the E2F-family transcription factors. Surprisingly, in spite of a significant accumulation of the hypophosphorylated form of Rb, no Rb/E2F complex was detectable in the proteasome inhibitor treated cells. Further analysis revealed that there was an increased accumulation of the E7 oncoprotein. We showed that the proteasome inhibitors simultaneously blocked the proteolysis of E7 and Rb, suggesting that E7 is also regulated by the ubiquitin-dependent proteolysis in cervical cancer cells. Taken together, this study suggests that targeted inhibition of Rb proteolysis will be required for restoring Rb function in HPV-containing cervical cancer cells.
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Affiliation(s)
- J Wang
- Center for Molecular Biology of Oral Diseases, College of Dentistry (M/C 860), University of Illinois at Chicago, 60612, USA
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Datta A, Bagchi S, Nag A, Shiyanov P, Adami GR, Yoon T, Raychaudhuri P. The p48 subunit of the damaged-DNA binding protein DDB associates with the CBP/p300 family of histone acetyltransferase. Mutat Res 2001; 486:89-97. [PMID: 11425514 DOI: 10.1016/s0921-8777(01)00082-9] [Citation(s) in RCA: 108] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
DDB has been implicated in DNA repair as well as transcription. Mutations in DDB have been correlated with the repair-deficiency disease, xeroderma pigmentosum group E (XP-E). The XP-E cells exhibit deficiencies in global genomic repair, suggesting a role for DDB in that process. DDB also possesses a transcription stimulatory activity. We showed that DDB could function as a transcriptional partner of E2F1. But the mechanism by which DDB stimulates E2F-regulated transcription or carry out its DNA repair function is not understood. To investigate the mechanisms, we looked for nuclear proteins that interact with DDB. Here we show that DDB associates with the CBP/p300 family of proteins, in vivo and in vitro. We suggest that DDB participates in global genomic repair by recruiting CBP/p300 to the damaged-chromatin. It is possible that the histone acetyltransferase activities of the CBP/p300 proteins induce chromatin remodeling at the damaged-sites to allow recruitment of the repair complexes. The observation offers insights into both transcription and repair functions of DDB.
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Affiliation(s)
- A Datta
- Department of Biochemistry and Molecular Biology (M/C 536), College of Medicine, University of Illinois at Chicago, 1819 W. Polk Street, Chicago, IL 60612, USA
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