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Halpert G, Halperin Sheinfeld M, Monteran L, Sharif K, Volkov A, Nadler R, Schlesinger A, Barshak I, Kalechman Y, Blank M, Shoenfeld Y, Amital H. The tellurium-based immunomodulator, AS101 ameliorates adjuvant-induced arthritis in rats. Clin Exp Immunol 2021; 203:375-384. [PMID: 33205391 PMCID: PMC7874835 DOI: 10.1111/cei.13553] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 11/10/2020] [Accepted: 11/11/2020] [Indexed: 11/29/2022] Open
Abstract
Despite undeniable improvement in the management of rheumatoid arthritis (RA), the discovery of more effective, less toxic and, ideally, less immune suppressive drugs are much needed. In the current study, we set to explore the potential anti-rheumatic activity of the non-toxic, tellurium-based immunomodulator, AS101 in an experimental animal model of RA. The effect of AS101 was assessed on adjuvant-induced arthritis (AIA) rats. Clinical signs of arthritis were assessed. Histopathological examination was used to assess inflammation, synovial changes and tissue lesions. Very late antigen-4 (VLA-4)+ cellular infiltration was detected using immunohistochemical staining. Enzyme-linked immunosorbent assay (ELISA) was used to measure circulating anti-cyclic citrullinated-peptide autoantibody (ACPA) and real-time polymerase chain reaction (PCR) was used to measure the in-vitro effect of AS101 on interleukin (IL)-6 and IL-1β expression in activated primary human fibroblasts. Prophylactic treatment with intraperitoneal AS101 reduced clinical arthritis scores in AIA rats (P < 0·01). AS101 abrogated the migration of active chronic inflammatory immune cells, particularly VLA-4+ cells, into joint cartilage and synovium, reduced the extent of joint damage and preserved joint architecture. Compared to phosphate-buffered saline (PBS)-treated AIA rats, histopathological inflammatory scores were significantly reduced (P < 0·05). Furthermore, AS101 resulted in a marked reduction of circulating ACPA in comparison to PBS-treated rats (P < 0·05). Importantly, AS101 significantly reduced mRNA levels of proinflammatory mediators such as IL-6 (P < 0·05) and IL-1β (P < 0·01) in activated primary human fibroblasts. Taken together, we report the first demonstration of the anti-rheumatic/inflammatory activity of AS101 in experimental RA model, thereby supporting an alternative early therapeutic intervention and identifying a promising agent for therapeutic intervention.
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Affiliation(s)
- G. Halpert
- Zabludowicz Center for Autoimmune DiseasesSheba Medical Center, Tel Hashomer; Affiliated to Sackler Faculty of Medicine,Tel Aviv UniversityTel AvivIsrael
| | - M. Halperin Sheinfeld
- The Safdié Institute for Cancer, AIDS and Immunology Research; Faculty of Life SciencesBar‐Ilan UniversityRamat‐GanIsrael
| | - L. Monteran
- The Safdié Institute for Cancer, AIDS and Immunology Research; Faculty of Life SciencesBar‐Ilan UniversityRamat‐GanIsrael
- Present address:
Department of Pathology, Sackler Faculty of MedicineTel Aviv UniversityTel AvivIsrael
| | - K. Sharif
- Internal Medicine B and Zabludowicz Center for Autoimmune DiseasesSheba Medical Center, Tel Hashomer; Affiliated to Sackler Faculty of Medicine, Tel Aviv UniversityTel AvivIsrael
| | - A. Volkov
- Institute of PathologySheba Medical Center, Tel Hashomer; Sackler Faculty of Medicine, Tel‐Aviv UniversityTel‐AvivIsrael
| | - R. Nadler
- The Academic Center of Law and ScienceHod HasharonIsrael
| | - A. Schlesinger
- Department of GeriatricsRabin Medical Center (Beilinson Campus)Petah TikvaIsrael
- Sackler Faculty of MedicineTel Aviv UniversityTel AvivIsrael
| | - I. Barshak
- Institute of PathologySheba Medical Center, Tel Hashomer; Sackler Faculty of Medicine, Tel‐Aviv UniversityTel‐AvivIsrael
| | - Y. Kalechman
- The Safdié Institute for Cancer, AIDS and Immunology Research; Faculty of Life SciencesBar‐Ilan UniversityRamat‐GanIsrael
| | - M. Blank
- Zabludowicz Center for Autoimmune DiseasesSheba Medical Center, Tel Hashomer; Affiliated to Sackler Faculty of Medicine,Tel Aviv UniversityTel AvivIsrael
| | - Y. Shoenfeld
- Zabludowicz Center for Autoimmune DiseasesSheba Medical Center, Tel Hashomer; Affiliated to Sackler Faculty of Medicine,Tel Aviv UniversityTel AvivIsrael
- Laboratory of the Mosaics of AutoimmunitySaint Petersburg UniversitySaint PetersburgRussian Federation
| | - H. Amital
- Internal Medicine B and Zabludowicz Center for Autoimmune DiseasesSheba Medical Center, Tel Hashomer; Affiliated to Sackler Faculty of Medicine, Tel Aviv UniversityTel AvivIsrael
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Zheng S, Zhang H, Liu R, Huang CL, Li H, Deng ZY, Tsao R. Do short chain fatty acids and phenolic metabolites of the gut have synergistic anti-inflammatory effects? – New insights from a TNF-α-induced Caco-2 cell model. Food Res Int 2021; 139:109833. [DOI: 10.1016/j.foodres.2020.109833] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 10/08/2020] [Accepted: 10/19/2020] [Indexed: 12/23/2022]
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Liu A, Zhang B, Zhao W, Tu Y, Wang Q, Li J. Catalpol ameliorates psoriasis-like phenotypes via SIRT1 mediated suppression of NF-κB and MAPKs signaling pathways. Bioengineered 2020; 12:183-195. [PMID: 33323018 PMCID: PMC8806253 DOI: 10.1080/21655979.2020.1863015] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Psoriasis is a chronic inflammatory skin disease that affects approximately 2% of worldwide population, and causing long-term troubles to the patients. Therefore, it is urgent to develop safe and effective therapeutic drugs. Catalpol is a natural iridoid glucoside, that has several remarkable pharmacological effects, however, whether catalpol can alleviated psoriasis has not been explored. The goal of the present work is to study the role of catalpol in psoriasis in vivo and in vitro. Imiquimod-induced psoriasis-like mice were applied with different concentrations of catalpol for 8 consecutive days. The severity degree of psoriasis was estimated and the skin pathological changes were detected by H&E staining. Also, TNF-α-stimulated keratinocytes were treated with different concentrations of catalpol, then the oxidative stress and inflammation factors, as well as the expression of SIRT1 and activation of NF-kB and MAPK pathways were measured. The results showed that catalpol reduced the erythema, scaling, ear thickness, and changed pathological phenotypes in the lesioned skin region in mice. Treatment with catalpol significantly suppressed the oxidative stress and inflammatory reactions in vivo and in vitro, as reflected by the decreased secretion or expression of oxidative stress indicators and proinflammatory factors. Furthermore, the SIRT1 was up-regulated and the NF-κB and MAPKs signaling pathways were suppressed by the treatment of catalpol in vivo and in vitro. In summary, our data suggested that catalpol may have a therapeutic property of psoriasis by ameliorating oxidative stress and inflammation partly through SIRT1 mediated suppression of NF-κB and MAPKs pathways. Abbreviation: CAT: catalase; ELISA: enzyme-linked immunosorbent assay; GSH: glutathione; HRP: horseradish peroxidase; IMQ: imiquimod; JNK: c-Jun NH 2-terminal kinases; MAPKs: mitogen-activated protein kinases; MDA: malondialdehyde; NC: negative control group; NF-kB: nuclear factor kappa B; PASI: psoriasis area and severity index; PVDF: polyvinylidene difluoride membranes; qRT-PCR: quantitative real time polymerase chain reaction; ROS: reactive oxygen species; SDS-PAGE: sodium dodecyl sulfate-polyacrylamide gel; SIRT1: silent information regulator 1; SOD: Cu/Zn superoxide dismutase
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Affiliation(s)
- Aimin Liu
- Department of Dermatology, Henan Province Hospital of Traditional Chinese Medicine, The Second Affiliated Hospital of Henan University of Chinese Medicine , Zhengzhou, People's Republic of China
| | - Buxin Zhang
- Department of Dermatology, Henan Province Hospital of Traditional Chinese Medicine, The Second Affiliated Hospital of Henan University of Chinese Medicine , Zhengzhou, People's Republic of China
| | - Wei Zhao
- Department of Dermatology, Henan Province Hospital of Traditional Chinese Medicine, The Second Affiliated Hospital of Henan University of Chinese Medicine , Zhengzhou, People's Republic of China
| | - Yuanhui Tu
- Department of Dermatology, Henan Province Hospital of Traditional Chinese Medicine, The Second Affiliated Hospital of Henan University of Chinese Medicine , Zhengzhou, People's Republic of China
| | - Qingxing Wang
- Department of Dermatology, Henan Province Hospital of Traditional Chinese Medicine, The Second Affiliated Hospital of Henan University of Chinese Medicine , Zhengzhou, People's Republic of China
| | - Jing Li
- Department of Dermatology, Henan Province Hospital of Traditional Chinese Medicine, The Second Affiliated Hospital of Henan University of Chinese Medicine , Zhengzhou, People's Republic of China
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Zustakova M, Kratochvilova L, Slama P. Apoptosis of Eosinophil Granulocytes. BIOLOGY 2020; 9:biology9120457. [PMID: 33321726 PMCID: PMC7763668 DOI: 10.3390/biology9120457] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 12/04/2020] [Accepted: 12/08/2020] [Indexed: 12/27/2022]
Abstract
Simple Summary Eosinophil granulocytes (eosinophils) belong to the family of white blood cells that play important roles in the development of asthma and various types of allergy. Eosinophils are cells with a diameter of 12–17 µm and they originate from myeloid precursors. They were discovered by Paul Ehrlich in 1879 in the process of staining fixed blood smears with aniline dyes. Apoptosis (programmed cell death) is the process by which cells lose their functionality. Therefore, it is very important to study the apoptosis of eosinophils and their survival factors to understand how to develop new drugs based on the modulation of eosinophil apoptosis for the treatment of asthma and allergic diseases. Abstract In the past 10 years, the number of people in the Czech Republic with allergies has doubled to over three million. Allergic pollen catarrh, constitutional dermatitis and asthma are the allergic disorders most often diagnosed. Genuine food allergies today affect 6–8% of nursing infants, 3–5% of small children, and 2–4% of adults. These disorders are connected with eosinophil granulocytes and their apoptosis. Eosinophil granulocytes are postmitotic leukocytes containing a number of histotoxic substances that contribute to the initiation and continuation of allergic inflammatory reactions. Eosinophilia results from the disruption of the standard half-life of eosinophils by the expression of mechanisms that block the apoptosis of eosinophils, leading to the development of chronic inflammation. Glucocorticoids are used as a strong acting anti-inflammatory medicine in the treatment of hypereosinophilia. The removal of eosinophils by the mechanism of apoptosis is the effect of this process. This work sums up the contemporary knowledge concerning the apoptosis of eosinophils, its role in the aforementioned disorders, and the indications for the use of glucocorticoids in their related therapies.
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Kunjiappan S, Pavadai P, Vellaichamy S, Ram Kumar Pandian S, Ravishankar V, Palanisamy P, Govindaraj S, Srinivasan G, Premanand A, Sankaranarayanan M, Theivendren P. Surface receptor‐mediated targeted drug delivery systems for enhanced cancer treatment: A state‐of‐the‐art review. Drug Dev Res 2020; 82:309-340. [DOI: 10.1002/ddr.21758] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 10/16/2020] [Accepted: 10/23/2020] [Indexed: 12/18/2022]
Affiliation(s)
- Selvaraj Kunjiappan
- Department of Biotechnology Kalasalingam Academy of Research and Education Krishnankoil Tamilnadu India
| | - Parasuraman Pavadai
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy M.S. Ramaiah University of Applied Sciences Bengaluru Karnataka India
| | - Sivakumar Vellaichamy
- Department of Pharmaceutics Arulmigu Kalasalingam College of Pharmacy Krishnankoil Tamilnadu India
| | | | | | - Ponnusamy Palanisamy
- School of Mechanical Engineering Vellore Institute of Technology Vellore Tamilnadu India
| | - Saravanan Govindaraj
- Department of Pharmaceutical Chemistry MNR College of Pharmacy Sangareddy Telangana India
| | - Gowshiki Srinivasan
- Department of Biotechnology Kalasalingam Academy of Research and Education Krishnankoil Tamilnadu India
| | - Adhvitha Premanand
- Department of Biotechnology Kalasalingam Academy of Research and Education Krishnankoil Tamilnadu India
| | | | - Panneerselvam Theivendren
- Department of Pharmaceutical Chemistry Swamy Vivekananda College of Pharmacy Elayampalayam, Namakkal Tamilnadu India
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Sanchez-Schmitz G, Morrocchi E, Cooney M, Soni D, Khatun R, Palma P, Dowling DJ, Levy O. Neonatal monocytes demonstrate impaired homeostatic extravasation into a microphysiological human vascular model. Sci Rep 2020; 10:17836. [PMID: 33082466 PMCID: PMC7576166 DOI: 10.1038/s41598-020-74639-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 09/25/2020] [Indexed: 12/12/2022] Open
Abstract
Infections are most frequent at the extremes of life, especially among newborns, reflecting age-specific differences in immunity. Monocytes maintain tissue-homeostasis and defence-readiness by escaping circulation in the absence of inflammation to become tissue-resident antigen presenting cells in vivo. Despite equivalent circulating levels, neonates demonstrate lower presence of monocytes inside peripheral tissues as compared to adults. To study the ability of monocytes to undergo autonomous transendothelial extravasation under biologically accurate circumstances we engineered a three-dimensional human vascular-interstitial model including collagen, fibronectin, primary endothelial cells and autologous untreated plasma. This microphysiological tissue construct enabled age-specific autonomous extravasation of monocytes through a confluent human endothelium in the absence of exogenous chemokines and activation. Both CD16- and CD16+ newborn monocytes demonstrated lower adherence and extravasation as compared to adults. In contrast, pre-activated tissue constructs were colonized by newborn monocytes at the same frequency than adult monocytes, suggesting that neonatal monocytes are capable of colonizing inflamed tissues. The presence of autologous plasma neither improved newborn homeostatic extravasation nor shaped age-specific differences in endothelial cytokines that could account for this impairment. Newborn monocytes demonstrated significantly lower surface expression of CD31 and CD11b, and mechanistic experiments using blocking antibodies confirmed a functional role for CD31 and CD54 in neonatal homeostatic extravasation. Our data suggests that newborn monocytes are intrinsically impaired in extravasation through quiescent endothelia, a phenomenon that could contribute to the divergent immune responsiveness to vaccines and susceptibility to infection observed during early life.
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Affiliation(s)
- Guzman Sanchez-Schmitz
- Division of Infectious Diseases, Boston Children's Hospital, Boston, MA, USA.
- Precision Vaccines Program, Boston Children's Hospital, Boston, MA, USA.
- Harvard Medical School, Harvard University, Boston, MA, USA.
| | - Elena Morrocchi
- Division of Infectious Diseases, Boston Children's Hospital, Boston, MA, USA
- Precision Vaccines Program, Boston Children's Hospital, Boston, MA, USA
- Academic Department of Paediatrics (DPUO), Research Unit of Congenital and Perinatal Infections, Children's Hospital Bambino Gesù, Rome, Italy
| | - Mitchell Cooney
- Division of Infectious Diseases, Boston Children's Hospital, Boston, MA, USA
- Precision Vaccines Program, Boston Children's Hospital, Boston, MA, USA
| | - Dheeraj Soni
- Division of Infectious Diseases, Boston Children's Hospital, Boston, MA, USA
- Precision Vaccines Program, Boston Children's Hospital, Boston, MA, USA
- Harvard Medical School, Harvard University, Boston, MA, USA
| | - Rahima Khatun
- Division of Infectious Diseases, Boston Children's Hospital, Boston, MA, USA
- Precision Vaccines Program, Boston Children's Hospital, Boston, MA, USA
- Harvard Medical School, Harvard University, Boston, MA, USA
| | - Paolo Palma
- Academic Department of Paediatrics (DPUO), Research Unit of Congenital and Perinatal Infections, Children's Hospital Bambino Gesù, Rome, Italy
- Chair of Paediatrics, Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - David J Dowling
- Division of Infectious Diseases, Boston Children's Hospital, Boston, MA, USA
- Precision Vaccines Program, Boston Children's Hospital, Boston, MA, USA
- Harvard Medical School, Harvard University, Boston, MA, USA
| | - Ofer Levy
- Division of Infectious Diseases, Boston Children's Hospital, Boston, MA, USA
- Precision Vaccines Program, Boston Children's Hospital, Boston, MA, USA
- Harvard Medical School, Harvard University, Boston, MA, USA
- Broad Institute of Harvard and MIT, Cambridge, MA, USA
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57
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Israelov H, Ravid O, Atrakchi D, Rand D, Elhaik S, Bresler Y, Twitto-Greenberg R, Omesi L, Liraz-Zaltsman S, Gosselet F, Schnaider Beeri M, Cooper I. Caspase-1 has a critical role in blood-brain barrier injury and its inhibition contributes to multifaceted repair. J Neuroinflammation 2020; 17:267. [PMID: 32907600 PMCID: PMC7488082 DOI: 10.1186/s12974-020-01927-w] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Accepted: 08/13/2020] [Indexed: 12/23/2022] Open
Abstract
Background Excessive inflammation might activate and injure the blood-brain barrier (BBB), a common feature of many central nervous system (CNS) disorders. We previously developed an in vitro BBB injury model in which the organophosphate paraoxon (PX) affects the BBB endothelium by attenuating junctional protein expression leading to weakened barrier integrity. The objective of this study was to investigate the inflammatory cellular response at the BBB to elucidate critical pathways that might lead to effective treatment in CNS pathologies in which the BBB is compromised. We hypothesized that caspase-1, a core component of the inflammasome complex, might have important role in BBB function since accumulating evidence indicates its involvement in brain inflammation and pathophysiology. Methods An in vitro human BBB model was employed to investigate BBB functions related to inflammation, primarily adhesion and transmigration of peripheral blood mononuclear cells (PBMCs). Caspase-1 pathway was studied by measurements of its activation state and its role in PBMCs adhesion, transmigration, and BBB permeability were investigated using the specific caspase-1 inhibitor, VX-765. Expression level of adhesion and junctional molecules and the secretion of pro-inflammatory cytokines were measured in vitro and in vivo at the BBB endothelium after exposure to PX. The potential repair effect of blocking caspase-1 and downstream molecules was evaluated by immunocytochemistry, ELISA, and Nanostring technology. Results PX affected the BBB in vitro by elevating the expression of the adhesion molecules E-selectin and ICAM-1 leading to increased adhesion of PBMCs to endothelial monolayer, followed by elevated transendothelial-migration which was ICAM-1 and LFA-1 dependent. Blocking caspase-8 and 9 rescued the viability of the endothelial cells but not the elevated transmigration of PBMCs. Inhibition of caspase-1, on the other hand, robustly restored all of barrier insults tested including PBMCs adhesion and transmigration, permeability, and VE-cadherin protein levels. The in vitro inflammatory response induced by PX and the role of caspase-1 in BBB injury were corroborated in vivo in isolated blood vessels from hippocampi of mice exposed to PX and treated with VX-765. Conclusions These results shed light on the important role of caspase-1 in BBB insult in general and specifically in the inflamed endothelium, and suggest therapeutic potential for various CNS disorders, by targeting caspase-1 in the injured BBB.
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Affiliation(s)
- Hila Israelov
- The Joseph Sagol Neuroscience Center, Sheba Medical Center, 52621, Tel Hashomer, Ramat Gan, Israel
| | - Orly Ravid
- The Joseph Sagol Neuroscience Center, Sheba Medical Center, 52621, Tel Hashomer, Ramat Gan, Israel
| | - Dana Atrakchi
- The Joseph Sagol Neuroscience Center, Sheba Medical Center, 52621, Tel Hashomer, Ramat Gan, Israel
| | - Daniel Rand
- The Joseph Sagol Neuroscience Center, Sheba Medical Center, 52621, Tel Hashomer, Ramat Gan, Israel.,Sackler Faculty of Medicine, Tel-Aviv University, Tel Aviv, Israel
| | - Shirin Elhaik
- The Joseph Sagol Neuroscience Center, Sheba Medical Center, 52621, Tel Hashomer, Ramat Gan, Israel
| | - Yael Bresler
- The Joseph Sagol Neuroscience Center, Sheba Medical Center, 52621, Tel Hashomer, Ramat Gan, Israel.,Sackler Faculty of Medicine, Tel-Aviv University, Tel Aviv, Israel
| | - Rachel Twitto-Greenberg
- The Joseph Sagol Neuroscience Center, Sheba Medical Center, 52621, Tel Hashomer, Ramat Gan, Israel.,Sackler Faculty of Medicine, Tel-Aviv University, Tel Aviv, Israel
| | - Liora Omesi
- The Joseph Sagol Neuroscience Center, Sheba Medical Center, 52621, Tel Hashomer, Ramat Gan, Israel
| | - Sigal Liraz-Zaltsman
- The Joseph Sagol Neuroscience Center, Sheba Medical Center, 52621, Tel Hashomer, Ramat Gan, Israel.,Department of Pharmacology, The Institute for Drug Research, The Hebrew University of Jerusalem, Jerusalem, Israel.,Institute for Health and Medical Professions, Department of Sports Therapy, Ono Academic College, Kiryat Ono, Israel
| | - Fabien Gosselet
- UR 2465, Blood-brain barrier Laboratory (LBHE), Artois University, F-62300, Lens, France
| | - Michal Schnaider Beeri
- The Joseph Sagol Neuroscience Center, Sheba Medical Center, 52621, Tel Hashomer, Ramat Gan, Israel.,School of Psychology, Interdisciplinary Center (IDC), Herzliya, Israel.,Department of Psychiatry, The Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Itzik Cooper
- The Joseph Sagol Neuroscience Center, Sheba Medical Center, 52621, Tel Hashomer, Ramat Gan, Israel. .,School of Psychology, Interdisciplinary Center (IDC), Herzliya, Israel. .,The Nehemia Rubin Excellence in Biomedical Research - The TELEM Program, Sheba Medical Center, Tel-Hashomer, Israel.
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58
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Qian Y, Gao C, Zhao X, Song Y, Luo H, An S, Huang J, Zhang J, Jiang R. Fingolimod Attenuates Lung Injury and Cardiac Dysfunction after Traumatic Brain Injury. J Neurotrauma 2020; 37:2131-2140. [PMID: 32434456 DOI: 10.1089/neu.2019.6951] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Acute lung injury (ALI) and cardiac dysfunction are common in traumatic brain injury (TBI) patients and always indicate poor outcomes. Inflammatory responses play important roles in TBI-induced cardiac and pulmonary damage. Fingolimod, an immunomodulatory agent, alleviates brain edema, restores the integrity of the blood-brain barrier (BBB), and improves functional deficits by inhibiting multiple inflammatory responses. Fingolimod (1 mg/kg) was injected intraperitoneally at 2 h after the controlled cortical impact (CCI) model was established in adult male mice. The concentration of inflammatory cytokines in the lung and heart after TBI was measured with a cytokine array. The lung wet/dry weight ratio and Evans blue dye leakage were used to quantify pulmonary edema and capillary leakage. Immunofluorescence, electron microscopy, and echocardiographic examination were used to assess the pathology and functional deficits in hearts. We found that TBI caused significant heart and lung damage. The administration of fingolimod significantly reduced the elevated inflammatory cytokine production, neutrophil infiltration, the leakage of protein in bronchoalveolar lavage fluid (BALF), and the wet/dry weight ratio in lung tissue at 3 days after TBI. In addition, fingolimod treatment also alleviated the inflammatory response in the heart; decreased cardiac apoptosis, fibrosis, and histological microstructural changes; and improved cardiac function from 3 days after TBI and maintained it for 30 days after TBI as measured by echocardiography. These results suggest that TBI resulted in significant cardiac and pulmonary damage accompanied by significant inflammatory responses in heart and lung tissue. Fingolimod treatment reduced the inflammatory response and alleviated TBI-induced lung and heart injury.
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Affiliation(s)
- Yu Qian
- Department of Neurology, Tianjin Medical University General Hospital, Tianjin, China.,Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury Neuro-Repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, China
| | - Chuang Gao
- Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury Neuro-Repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, China.,Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
| | | | - Yiming Song
- Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury Neuro-Repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, China.,Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Hongliang Luo
- Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury Neuro-Repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, China.,Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Shuo An
- Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury Neuro-Repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, China.,Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Jinhao Huang
- Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury Neuro-Repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, China.,Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Jianning Zhang
- Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury Neuro-Repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, China.,Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Rongcai Jiang
- Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury Neuro-Repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, China.,Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
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Active constituents and mechanisms of Respiratory Detox Shot, a traditional Chinese medicine prescription, for COVID-19 control and prevention: Network-molecular docking-LC-MS E analysis. JOURNAL OF INTEGRATIVE MEDICINE 2020; 18:229-241. [PMID: 32307268 PMCID: PMC7195604 DOI: 10.1016/j.joim.2020.03.004] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 03/17/2020] [Indexed: 02/06/2023]
Abstract
OBJECTIVE Lung-toxin Dispelling Formula No. 1, referred to as Respiratory Detox Shot (RDS), was developed based on a classical prescription of traditional Chinese medicine (TCM) and the theoretical understanding of herbal properties within TCM. Therapeutic benefits of using RDS for both disease control and prevention, in the effort to contain the coronavirus disease 2019 (COVID-19), have been shown. However, the biochemically active constituents of RDS and their mechanisms of action are still unclear. The goal of the present study is to clarify the material foundation and action mechanism of RDS. METHODS To conduct an analysis of RDS, an integrative analytical platform was constructed, including target prediction, protein-protein interaction (PPI) network, and cluster analysis; further, the hub genes involved in the disease-related pathways were identified, and the their corresponding compounds were used for in vitro validation of molecular docking predictions. The presence of these validated compounds was also measured in samples of the RDS formula to quantify the abundance of the biochemically active constituents. In our network pharmacological study, a total of 26 bioinformatic programs and databases were used, and six networks, covering the entire Zang-fu viscera, were constructed to comprehensively analyze the intricate connections among the compounds-targets-disease pathways-meridians of RDS. RESULTS For all 1071 known chemical constituents of the nine ingredients in RDS, identified from established TCM databases, 157 passed drug-likeness screening and led to 339 predicted targets in the constituent-target network. Forty-two hub genes with core regulatory effects were extracted from the PPI network, and 134 compounds and 29 crucial disease pathways were implicated in the target-constituent-disease network. Twelve disease pathways attributed to the Lung-Large Intestine meridians, with six and five attributed to the Kidney-Urinary Bladder and Stomach-Spleen meridians, respectively. One-hundred and eighteen candidate constituents showed a high binding affinity with SARS-coronavirus-2 3-chymotrypsin-like protease (3CLpro), as indicated by molecular docking using computational pattern recognition. The in vitro activity of 22 chemical constituents of RDS was validated using the 3CLpro inhibition assay. Finally, using liquid chromatography mass spectrometry in data-independent analysis mode, the presence of seven out of these 22 constituents was confirmed and validated in an aqueous decoction of RDS, using reference standards in both non-targeted and targeted approaches. CONCLUSION RDS acts primarily in the Lung-Large Intestine, Kidney-Urinary Bladder and Stomach-Spleen meridians, with other Zang-fu viscera strategically covered by all nine ingredients. In the context of TCM meridian theory, the multiple components and targets of RDS contribute to RDS's dual effects of health-strengthening and pathogen-eliminating. This results in general therapeutic effects for early COVID-19 control and prevention.
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60
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Hsueh PY, Ju Y, Vega A, Edman MC, MacKay JA, Hamm-Alvarez SF. A Multivalent ICAM-1 Binding Nanoparticle which Inhibits ICAM-1 and LFA-1 Interaction Represents a New Tool for the Investigation of Autoimmune-Mediated Dry Eye. Int J Mol Sci 2020; 21:ijms21082758. [PMID: 32326657 PMCID: PMC7216292 DOI: 10.3390/ijms21082758] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 04/11/2020] [Accepted: 04/12/2020] [Indexed: 12/31/2022] Open
Abstract
The autoimmune disorder, Sjögren’s syndrome (SS), is characterized by lymphocytic infiltration and loss of function of exocrine glands such as the lacrimal gland (LG) and salivary gland. SS-associated changes in the LG are associated with the development of autoimmune-mediated dry eye disease. We have previously reported the accumulation of intercellular adhesion molecule 1 (ICAM-1) in the LG of Non-Obese Diabetic (NOD) mice, a murine model of autoimmune-mediated dry eye in SS, in both LG acinar cells and infiltrating lymphocytes. ICAM-1 initiates T-cell activation and can trigger T-cell migration through binding to lymphocyte function-associated 1 antigen (LFA). To modulate this interaction, this study introduces a new tool, a multivalent biopolymeric nanoparticle assembled from a diblock elastin-like polypeptide (ELP) using the S48I48 (SI) ELP scaffold fused with a mouse ICAM-1 targeting peptide to form IBP-SI. IBP-SI forms a multivalent, monodisperse nanoparticle with a radius of 21.9 nm. Unlike the parent SI, IBP-SI binds mouse ICAM-1 and is internalized by endocytosis into transfected HeLa cells before it accumulates in lysosomes. In vitro assays measuring lymphocyte adhesion to Tumor Necrosis Factor TNF-α-treated bEnd.3 cells, which express high levels of ICAM-1, show that adhesion is inhibited by IBP-SI but not by SI, with IC50 values of 62.7 μM and 81.2 μM, respectively, in two different assay formats. IBP-SI, but not SI, also blocked T-cell proliferation in a mixed lymphocyte reaction by 74% relative to proliferation in an untreated mixed cell reaction. These data suggest that a biopolymeric nanoparticle with affinity for ICAM-1 can disrupt ICAM-1 and LFA interactions in vitro and may have further utility as an in vivo tool or potential therapeutic.
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Affiliation(s)
- Pang-Yu Hsueh
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA 90033, USA; (P.-Y.H.); (Y.J.); (A.V.)
| | - Yaping Ju
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA 90033, USA; (P.-Y.H.); (Y.J.); (A.V.)
| | - Adrianna Vega
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA 90033, USA; (P.-Y.H.); (Y.J.); (A.V.)
| | - Maria C. Edman
- Department of Ophthalmology, USC Roski Eye Institute, University of Southern California, Los Angeles, CA 90033, USA;
| | - J. Andrew MacKay
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA 90033, USA; (P.-Y.H.); (Y.J.); (A.V.)
- Department of Biomedical Engineering, University of Southern California, Los Angeles, CA 90089, USA
- Correspondence: (J.A.M.); (S.F.H.-A.)
| | - Sarah F. Hamm-Alvarez
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA 90033, USA; (P.-Y.H.); (Y.J.); (A.V.)
- Department of Ophthalmology, USC Roski Eye Institute, University of Southern California, Los Angeles, CA 90033, USA;
- Correspondence: (J.A.M.); (S.F.H.-A.)
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61
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Mok SWF, Wong VKW, Lo HH, de Seabra Rodrigues Dias IR, Leung ELH, Law BYK, Liu L. Natural products-based polypharmacological modulation of the peripheral immune system for the treatment of neuropsychiatric disorders. Pharmacol Ther 2020; 208:107480. [DOI: 10.1016/j.pharmthera.2020.107480] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 12/31/2019] [Indexed: 02/06/2023]
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Nørgård MØ, Christensen M, Mutsaers HA, Nørregaard R. Phenformin Attenuates Renal Injury in Unilateral Ureteral Obstructed Mice without Affecting Immune Cell Infiltration. Pharmaceutics 2020; 12:pharmaceutics12040301. [PMID: 32224876 PMCID: PMC7238166 DOI: 10.3390/pharmaceutics12040301] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 03/23/2020] [Accepted: 03/23/2020] [Indexed: 01/14/2023] Open
Abstract
Phenformin and metformin are antihyperglycemic drugs that belong to the class of biguanides. Previously, we demonstrated that metformin elicits renoprotective effects in unilateral ureteral obstructed mice by reducing the infiltration of immune cells into the kidney. Since phenformin is a more potent drug as compared to metformin, we investigated the renoprotective properties of phenformin. We studied the efficacy of both drugs using mice that underwent unilateral ureteral obstruction. Renal damage was evaluated on RNA and protein level by qPCR, Western blotting, and immunohistochemistry. Moreover, we studied immune cell infiltration using flow cytometry. Both biguanides significantly reduced UUO-induced kidney injury, as illustrated by a reduction in KIM-1 protein expression. In addition, both metformin and phenformin impacted the gene expression of several inflammatory markers but to a different extent. Moreover, in contrast to metformin, phenformin did not impact immune cell infiltration into UUO kidneys. In conclusion, we demonstrated that phenformin has similar renoprotective effects as metformin, but the mechanism of action differs, and phenformin is more potent. The beneficial effects of phenformin are probably due to inhibition of the STAT3 pathway and mitochondrial complex I. Further research is needed to unveil the therapeutic potential of phenformin for the treatment of renal injury, either at low, non-toxic concentrations or as part of a combination therapy.
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Safley SA, Barber GF, Holdcraft RW, Gazda LS, Duncanson S, Poznansky MC, Sambanis A, Weber CJ. Multiple clinically relevant immunotherapies prolong the function of microencapsulated porcine islet xenografts in diabetic NOD mice without the use of anti‐CD154 mAb. Xenotransplantation 2020; 27:e12577. [DOI: 10.1111/xen.12577] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 12/06/2019] [Accepted: 12/09/2019] [Indexed: 11/28/2022]
Affiliation(s)
- Susan A. Safley
- Department of Surgery Emory University School of Medicine Atlanta GA
| | - Graham F. Barber
- Department of Surgery Emory University School of Medicine Atlanta GA
- Parker H. Petit Institute of Bioengineering and Bioscience Georgia Institute of Technology Atlanta GA
| | | | | | - Stephanie Duncanson
- School of Chemical & Biomolecular Engineering Department of Biomedical Engineering Georgia Institute of Technology Atlanta GA
- Oncorus Cambridge MA
| | - Mark C. Poznansky
- Vaccine and Immunotherapy Center Massachusetts General Hospital (East) Charlestown MA
| | - Athanassios Sambanis
- School of Chemical & Biomolecular Engineering Department of Biomedical Engineering Georgia Institute of Technology Atlanta GA
- W. M. Keck Foundation Los Angeles CA
| | - Collin J. Weber
- Department of Surgery Emory University School of Medicine Atlanta GA
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Manocha G, Ghatak A, Puig K, Combs C. Anti-α4β1 Integrin Antibodies Attenuated Brain Inflammatory Changes in a Mouse Model of Alzheimer's Disease. Curr Alzheimer Res 2019; 15:1123-1135. [PMID: 30068274 PMCID: PMC6302348 DOI: 10.2174/1567205015666180801111033] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 07/11/2018] [Accepted: 07/23/2018] [Indexed: 01/04/2023]
Abstract
BACKGROUND Alzheimer's disease (AD) is associated with age-associated central nervous system degeneration and dementia. This decline in the function correlates with deposition of Aβ peptide containing plaques and associated reactive gliosis. The inflammatory phenotype of microglia, in particular, is often considered detrimental to cognitive function in AD. In addition to the changes in the CNS, altered immune changes in the periphery have recently been observed in AD suggesting a critical immune- related communication between the periphery and the brain. OBJECTIVE We hypothesized that modulating the peripheral immune system may alter the proinflammatory gliosis associated with AD. Therapeutic antibodies against the α4β1 integrin receptor have been used clinically to attenuate the ability of various immune cells to adhere to endothelium and migrate into target tissues such as the intestines (Crohn's disease) or brain (multiple sclerosis). We hypothesized that a similar peripheral antibody-based therapy would attenuate gliosis by altering immune cell infiltration or phenotype in peripheral organs and the brain using an APP/PS1 mouse model of Alzheimer's disease. METHOD Littermate control wild-type and APP/PS1 mice were tail vein injected with either saline, isotype control (IgG2b), or an antibody recognizing α4-integrin, anti-CD49d, once a week for 4 consecutive weeks. To understand CNS and peripheral immune changes, brains and spleen were used. RESULTS/CONCLUSION Our data suggests that the antibody therapy was able to reduce microgliosis, astrogliosis, and synaptic changes in the APP/PS1 mice compared to isotype control injections without changing amyloid-β plaque load. Interestingly, both isotype control and antibody therapy also reduced the number of proinflammatory cytokines in the spleen although changes in the brain were less robust. The anti-CD49d and isotype control treatments also reduced CD4 immunoreactivity in the brains, suggesting a possible mechanism for attenuation of inflammation in the brain. This data suggests that it is indeed feasible to alter the immune component of AD brain changes using a clinically feasible strategy of delivering a particular subtype of IgG or epitope selective antibodies that target infiltration of the peripheral immune system.
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Affiliation(s)
- Gunjan Manocha
- Department of Biomedical Sciences, University of North Dakota, School of Medicine and Health Sciences, Grand Forks, North Dakota, ND 58202, United States
| | - Atreyi Ghatak
- Department of Biomedical Sciences, University of North Dakota, School of Medicine and Health Sciences, Grand Forks, North Dakota, ND 58202, United States
| | - Kendra Puig
- Presentation College Aberdeen, South Dakota, ND 58202, United States
| | - Colin Combs
- Department of Biomedical Sciences, University of North Dakota, School of Medicine and Health Sciences, Grand Forks, North Dakota, ND 58202, United States
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Peng Y, Liou B, Inskeep V, Blackwood R, Mayhew CN, Grabowski GA, Sun Y. Intravenous infusion of iPSC-derived neural precursor cells increases acid β-glucosidase function in the brain and lessens the neuronopathic phenotype in a mouse model of Gaucher disease. Hum Mol Genet 2019; 28:3406-3421. [PMID: 31373366 PMCID: PMC6891072 DOI: 10.1093/hmg/ddz184] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 07/12/2019] [Accepted: 07/18/2019] [Indexed: 02/07/2023] Open
Abstract
Gaucher disease (GD) is caused by GBA1 mutations leading to functional deficiency of acid-β-glucosidase (GCase). No effective treatment is available for neuronopathic GD (nGD). A subclass of neural stem and precursor cells (NPCs) expresses VLA4 (integrin α4β1, very late antigen-4) that facilitates NPC entry into the brain following intravenous (IV) infusion. Here, the therapeutic potential of IV VLA4+NPCs was assessed for nGD using wild-type mouse green fluorescent protein (GFP)-positive multipotent induced pluripotent stem cell (iPSC)-derived VLA4+NPCs. VLA4+NPCs successfully engrafted in the nGD (4L;C*) mouse brain. GFP-positive cells differentiated into neurons, astrocytes and oligodendrocytes in the brainstem, midbrain and thalamus of the transplanted mice and significantly improved sensorimotor function and prolonged life span compared to vehicle-treated 4L;C* mice. VLA4+NPC transplantation significantly decreased levels of CD68 and glial fibrillary acidic protein, as well as TNFα mRNA levels in the brain, indicating reduced neuroinflammation. Furthermore, decreased Fluoro-Jade C and NeuroSilver staining suggested inhibition of neurodegeneration. VLA4+NPC-engrafted 4L;C* midbrains showed 35% increased GCase activity, reduced substrate [glucosylceramide (GC, -34%) and glucosylsphingosine (GS, -11%)] levels and improved mitochondrial oxygen consumption rates in comparison to vehicle-4L;C* mice. VLA4+NPC engraftment in 4L;C* brain also led to enhanced expression of neurotrophic factors that have roles in neuronal survival and the promotion of neurogenesis. This study provides evidence that iPSC-derived NPC transplantation has efficacy in an nGD mouse model and provides proof of concept for autologous NPC therapy in nGD.
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Affiliation(s)
- Yanyan Peng
- Division of Human Genetics, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Benjamin Liou
- Division of Human Genetics, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Venette Inskeep
- Division of Human Genetics, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Rachel Blackwood
- Division of Human Genetics, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Christopher N Mayhew
- Division of Developmental Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229, USA
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - Gregory A Grabowski
- Division of Human Genetics, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Ying Sun
- Division of Human Genetics, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229, USA
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
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66
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Colamatteo A, Maggioli E, Azevedo Loiola R, Hamid Sheikh M, Calì G, Bruzzese D, Maniscalco GT, Centonze D, Buttari F, Lanzillo R, Perna F, Zuccarelli B, Mottola M, Cassano S, Galgani M, Solito E, De Rosa V. Reduced Annexin A1 Expression Associates with Disease Severity and Inflammation in Multiple Sclerosis Patients. THE JOURNAL OF IMMUNOLOGY 2019; 203:1753-1765. [PMID: 31462505 DOI: 10.4049/jimmunol.1801683] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Accepted: 07/25/2019] [Indexed: 12/13/2022]
Abstract
Chronic neuroinflammation is a key pathological hallmark of multiple sclerosis (MS) that suggests that resolution of inflammation by specialized proresolving molecules is dysregulated in the disease. Annexin A1 (ANXA1) is a protein induced by glucocorticoids that facilitates resolution of inflammation through several mechanisms that include an inhibition of leukocyte recruitment and activation. In this study, we investigated the ability of ANXA1 to influence T cell effector function in relapsing/remitting MS (RRMS), an autoimmune disease sustained by proinflammatory Th1/Th17 cells. Circulating expression levels of ANXA1 in naive-to-treatment RRMS subjects inversely correlated with disease score and progression. At the cellular level, there was an impaired ANXA1 production by CD4+CD25- conventional T and CD4+RORγt+ T (Th17) cells from RRMS subjects that associated with an increased migratory capacity in an in vitro model of blood brain barrier. Mechanistically, ANXA1 impaired monocyte maturation secondarily to STAT3 hyperactivation and potently reduced T cell activation, proliferation, and glycolysis. Together, these findings identify impaired disease resolution pathways in RRMS caused by dysregulated ANXA1 expression that could represent new potential therapeutic targets in RRMS.
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Affiliation(s)
- Alessandra Colamatteo
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli "Federico II," 80131 Naples, Italy
| | - Elisa Maggioli
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, EC1M 6BQ London, United Kingdom
| | - Rodrigo Azevedo Loiola
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, EC1M 6BQ London, United Kingdom
| | - Madeeha Hamid Sheikh
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, EC1M 6BQ London, United Kingdom
| | - Gaetano Calì
- Istituto per l'Endocrinologia e l'Oncologia Sperimentale "G. Salvatore," Consiglio Nazionale delle Ricerche, 80131 Naples, Italy
| | - Dario Bruzzese
- Dipartimento di Sanità Pubblica, Università degli Studi di Napoli "Federico II," 80131 Naples, Italy
| | - Giorgia Teresa Maniscalco
- Dipartimento di Neurologia, Centro Regionale Sclerosi Multipla, Azienda Ospedaliera "A. Cardarelli," 80131 Naples, Italy
| | - Diego Centonze
- Istituto di Ricovero e Cura a Carattere Scientifico Neuromed, 86077 Pozzilli, Italy.,Department of Systems Medicine, Tor Vergata University, 00133 Rome, Italy
| | - Fabio Buttari
- Istituto di Ricovero e Cura a Carattere Scientifico Neuromed, 86077 Pozzilli, Italy
| | - Roberta Lanzillo
- Dipartimento di Neuroscienze e Scienze Riproduttive ed Odontostomatologiche, Università degli Studi di Napoli "Federico II," 80131 Naples, Italy
| | - Francesco Perna
- Dipartimento di Medicina Clinica e Chirurgia, Università degli Studi di Napoli "Federico II," 80131 Naples, Italy
| | - Bruno Zuccarelli
- Unità Operativa Complessa di Medicina Trasfusionale, Azienda Ospedaliera Specialistica dei Colli Monaldi-Cotugno, Centro Traumatologico Ortopedico, 80131 Naples, Italy; and
| | - Maria Mottola
- Unità Operativa Complessa di Medicina Trasfusionale, Azienda Ospedaliera Specialistica dei Colli Monaldi-Cotugno, Centro Traumatologico Ortopedico, 80131 Naples, Italy; and
| | - Silvana Cassano
- Istituto per l'Endocrinologia e l'Oncologia Sperimentale "G. Salvatore," Consiglio Nazionale delle Ricerche, 80131 Naples, Italy
| | - Mario Galgani
- Istituto per l'Endocrinologia e l'Oncologia Sperimentale "G. Salvatore," Consiglio Nazionale delle Ricerche, 80131 Naples, Italy
| | - Egle Solito
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli "Federico II," 80131 Naples, Italy; .,William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, EC1M 6BQ London, United Kingdom
| | - Veronica De Rosa
- Istituto per l'Endocrinologia e l'Oncologia Sperimentale "G. Salvatore," Consiglio Nazionale delle Ricerche, 80131 Naples, Italy; .,Unità di NeuroImmunologia, Fondazione Santa Lucia, 00143 Rome, Italy
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67
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Chen Y, Zhang H, Mats L, Liu R, Deng Z, Mine Y, Tsao R. Anti-inflammatory Effect and Cellular Uptake Mechanism of Peptides from Common Bean ( Phaseolus vulga L.) Milk and Yogurts in Caco-2 Mono- and Caco-2/EA.hy926 Co-culture Models. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:8370-8381. [PMID: 31271280 DOI: 10.1021/acs.jafc.9b03079] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Naturally occurring dietary peptides derived from gastrointestinal digestates of common bean milk and yogurt were studied for their bioaccessibility, bioavailability, and anti-inflammatory activity in both Caco-2 mono- and Caco-2/EA.hy926 co-culture cell models. Anti-inflammatory activities of these peptide extracts were found to be strongly associated with cellular uptake by the intestinal epithelial cells. Mechanisms underlying the cellular uptake were studied by examining the role of peptide transporter 1 and calcium sensing reporter. Three peptides, including γ-glutamyl-S-methylcysteine, γ-glutamyl-leucine, and leucine-leucine-valine, were found to be transported across the Caco-2 cell monolayer and detected by liquid chromatography-tandem mass spectrometry. A strong anti-inflammatory effect was observed in the basolateral EA.hy926 cells (co-culture model), as shown in their inhibition of tumor necrosis factor α-induced pro-inflammatory mediators of the nuclear factor κB and mitogen-activated protein kinase signal cascades. The results suggest that these peptides can be absorbed and possibly have systemic inhibition on inflammatory responses in vascular endothelial cells, indicating potential preventive effects on vascular diseases.
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Affiliation(s)
- Yuhuan Chen
- State Key Laboratory of Food Science and Technology , University of Nanchang , Nanchang , Jiangxi 330047 , People's Republic of China
- Guelph Research & Development Centre , Agriculture and Agri-Food Canada , 93 Stone Road West , Guelph , Ontario N1G 5C9 , Canada
| | - Hua Zhang
- Guelph Research & Development Centre , Agriculture and Agri-Food Canada , 93 Stone Road West , Guelph , Ontario N1G 5C9 , Canada
| | - Lili Mats
- Guelph Research & Development Centre , Agriculture and Agri-Food Canada , 93 Stone Road West , Guelph , Ontario N1G 5C9 , Canada
| | - Ronghua Liu
- Guelph Research & Development Centre , Agriculture and Agri-Food Canada , 93 Stone Road West , Guelph , Ontario N1G 5C9 , Canada
| | - Zeyuan Deng
- State Key Laboratory of Food Science and Technology , University of Nanchang , Nanchang , Jiangxi 330047 , People's Republic of China
| | - Yoshinori Mine
- Department of Food Science , University of Guelph , 50 Stone Road East , Guelph , Ontario N1G 2W1 , Canada
| | - Rong Tsao
- Guelph Research & Development Centre , Agriculture and Agri-Food Canada , 93 Stone Road West , Guelph , Ontario N1G 5C9 , Canada
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Griffin JD, Leon MA, Salash JR, Shao M, Hartwell BL, Pickens CJ, Sestak JO, Berkland C. Acute B-Cell Inhibition by Soluble Antigen Arrays Is Valency-Dependent and Predicts Immunomodulation in Splenocytes. Biomacromolecules 2019; 20:2115-2122. [PMID: 30995843 DOI: 10.1021/acs.biomac.9b00328] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Antigen valency plays a fundamental role in directing the nature of an immune response to be stimulatory or tolerogenic. Soluble antigen arrays (SAgAs) are an antigen-specific immunotherapy that combats autoimmunity through the multivalent display of autoantigen. Although mechanistic studies have shown SAgAs to induce T- and B-cell anergy, the effect of SAgA valency has never been experimentally tested. Here, SAgAs of discrete antigen valencies were synthesized by click chemistry and evaluated for acute B-cell signaling inhibition as well as downstream immunomodulatory effects in splenocytes. Initial studies using the Raji B-cell line demonstrated SAgA valency dictated the extent of calcium flux. Lower valency constructs elicited the largest reductions in B-cell activation. In splenocytes from mice with experimental autoimmune encephalomyelitis, the same valency-dependent effects were evident in the downregulation of the costimulatory marker CD86. The reduction of calcium flux observed in Raji B-cells correlated strongly with downregulation in splenocyte CD86 expression after 72 h. Here, a thorough analysis of SAgA antigenic valency illustrates that low, but not monovalent, presentation of autoantigen was ideal for eliciting the most potent immunomodulatory effects.
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Affiliation(s)
| | | | | | | | | | | | | | - Cory Berkland
- Orion BioScience , Omaha , Nebraska 68198 , United States
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69
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Ni D, Lu S, Zhang J. Emerging roles of allosteric modulators in the regulation of protein-protein interactions (PPIs): A new paradigm for PPI drug discovery. Med Res Rev 2019; 39:2314-2342. [PMID: 30957264 DOI: 10.1002/med.21585] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Revised: 03/12/2019] [Accepted: 03/24/2019] [Indexed: 12/26/2022]
Abstract
Protein-protein interactions (PPIs) are closely implicated in various types of cellular activities and are thus pivotal to health and disease states. Given their fundamental roles in a wide range of biological processes, the modulation of PPIs has enormous potential in drug discovery. However, owing to the general properties of large, flat, and featureless interfaces of PPIs, previous attempts have demonstrated that the generation of therapeutic agents targeting PPI interfaces is challenging, rendering them almost "undruggable" for decades. To date, rapid progress in chemical and structural biology techniques has promoted the exploitation of allostery as a novel approach in drug discovery. By attaching to allosteric sites that are topologically and spatially distinct from PPI interfaces, allosteric modulators can achieve improved physiochemical properties. Thus, allosteric modulators may represent an alternative strategy to target intractable PPIs and have attracted intense pharmaceutical interest. In this review, we first briefly introduce the characteristics of PPIs and then present different approaches for investigating PPIs, as well as the latest methods for modulating PPIs. Importantly, we comprehensively review the recent progress in the development of allosteric modulators to inhibit or stabilize PPIs. Finally, we conclude with future perspectives on the discovery of allosteric PPI modulators, especially the application of computational methods to aid in allosteric PPI drug discovery.
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Affiliation(s)
- Duan Ni
- Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Clinical and Fundamental Research Center, Renji Hospital, Shanghai Jiao-Tong University School of Medicine, Shanghai, China
| | - Shaoyong Lu
- Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Clinical and Fundamental Research Center, Renji Hospital, Shanghai Jiao-Tong University School of Medicine, Shanghai, China.,Medicinal Bioinformatics Center, Shanghai Jiao-Tong University School of Medicine, Shanghai, China
| | - Jian Zhang
- Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Clinical and Fundamental Research Center, Renji Hospital, Shanghai Jiao-Tong University School of Medicine, Shanghai, China.,Medicinal Bioinformatics Center, Shanghai Jiao-Tong University School of Medicine, Shanghai, China.,Center for Single-Cell Omics, Shanghai Jiao-Tong University School of Medicine, Shanghai, China
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70
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Roxin Á, Zhang C, Huh S, Lepage M, Zhang Z, Lin KS, Bénard F, Perrin DM. A Metal-Free DOTA-Conjugated 18F-Labeled Radiotracer: [18F]DOTA-AMBF3-LLP2A for Imaging VLA-4 Over-Expression in Murine Melanoma with Improved Tumor Uptake and Greatly Enhanced Renal Clearance. Bioconjug Chem 2019; 30:1210-1219. [DOI: 10.1021/acs.bioconjchem.9b00146] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Áron Roxin
- Chemistry Department, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Chengcheng Zhang
- Molecular Oncology, British Columbia Cancer Agency Research Centre, 675 West 10th Avenue, Vancouver, British Columbia V5Z 1L3, Canada
| | - Sungjoon Huh
- Chemistry Department, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Mathieu Lepage
- Chemistry Department, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Zhengxing Zhang
- Molecular Oncology, British Columbia Cancer Agency Research Centre, 675 West 10th Avenue, Vancouver, British Columbia V5Z 1L3, Canada
| | - Kuo-Shyan Lin
- Molecular Oncology, British Columbia Cancer Agency Research Centre, 675 West 10th Avenue, Vancouver, British Columbia V5Z 1L3, Canada
| | - François Bénard
- Molecular Oncology, British Columbia Cancer Agency Research Centre, 675 West 10th Avenue, Vancouver, British Columbia V5Z 1L3, Canada
| | - David M. Perrin
- Chemistry Department, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
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Kopec BM, Ulapane KR, Moral MEG, Siahaan TJ. Methods of Delivering Molecules Through the Blood-Brain Barrier for Brain Diagnostics and Therapeutics. BLOOD-BRAIN BARRIER 2019. [DOI: 10.1007/978-1-4939-8946-1_2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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72
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Fujii T, Kuriyama N, Hayasaki A, Iizawa Y, Tanemura A, Kato H, Murata Y, Azumi Y, Kishiwada M, Mizuno S, Usui M, Sakurai H, Isaji S. Recombinant Human Soluble Thrombomodulin Attenuates Hepatic Ischemia and/or Reperfusion Injury by Inhibiting Leukocyte Accumulation in Mice With Normal and Fatty Liver. Transplant Proc 2018; 50:2807-2814. [DOI: 10.1016/j.transproceed.2018.03.044] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Accepted: 03/06/2018] [Indexed: 12/12/2022]
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73
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Kaminuma O, Saeki M, Nishimura T, Kitamura N, Watanabe N, Hiroi T, Mori A. Differential Contribution of Adhesion Molecules to Th1 and Th2 Cell-Mediated Lung and Bowel Inflammation. Biol Pharm Bull 2018; 40:1801-1805. [PMID: 28966255 DOI: 10.1248/bpb.b17-00279] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
CD4+ T cells play a critical role in the development of allergic inflammation in several target organs. Various adhesion molecules are involved in the local recruitment of T cells and other inflammatory cells. We investigated the differential contribution of adhesion molecules to T helper 1 (Th1) and Th2 cell-mediated allergic lung and bowel inflammation by employing their neutralizing antibodies. BALB/c mice transferred with in vitro-differentiated antigen-specific Th1 and Th2 cells were intratracheally or intrarectally challenged with a relevant antigen. Infiltration of infused T cells occurred, along with the accumulation of neutrophils and eosinophils in the lungs of Th1 and Th2 cell-transferred recipients, respectively. Th1-mediated neutrophil and Th2-mediated eosinophil accumulation in the large intestine, which occurred after intrarectal challenge with the antigen, was indicated by the significant elevation of myeloperoxidase (MPO) and eosinophil peroxidase (EPO) activity. Blocking experiments with neutralizing antibodies indicated that intercellular cell adhesion molecule (ICAM)-1; vascular cell adhesion molecule (VCAM)-1; and αL, β2, and β7 integrins participate in the accumulation of Th2 cells and eosinophils in the lungs. In contrast, the migration of Th1 cells and neutrophils was diminished by blockage of αL/β2-integrin and ICAM-1, respectively. Mucosal addressin cell adhesion molecule (MadCAM)-1, vascular cell adhesion molecule (VCAM)-1, α4, β1, and β7 contributed to Th1-mediated neutrophilic inflammation in the bowel, though only MadCAM-1, α4, αL, and β2 were involved in Th2-mediated eosinophilic inflammation. We conclude that distinct sets of adhesion molecules are involved in Th1- and Th2-mediated allergic lung and bowel inflammation.
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Affiliation(s)
- Osamu Kaminuma
- Allergy and Immunology Project, Tokyo Metropolitan Institute of Medical Science.,Center for Life Science Research.,Bioresource Center, RIKEN.,Clinical Research Center for Allergy and Rheumatology, National Hospital Organization, Sagamihara National Hospital
| | - Mayumi Saeki
- Allergy and Immunology Project, Tokyo Metropolitan Institute of Medical Science.,Bioresource Center, RIKEN
| | - Tomoe Nishimura
- Allergy and Immunology Project, Tokyo Metropolitan Institute of Medical Science
| | - Noriko Kitamura
- Allergy and Immunology Project, Tokyo Metropolitan Institute of Medical Science
| | - Nobumasa Watanabe
- Allergy and Immunology Project, Tokyo Metropolitan Institute of Medical Science
| | - Takachika Hiroi
- Allergy and Immunology Project, Tokyo Metropolitan Institute of Medical Science
| | - Akio Mori
- Allergy and Immunology Project, Tokyo Metropolitan Institute of Medical Science.,Clinical Research Center for Allergy and Rheumatology, National Hospital Organization, Sagamihara National Hospital
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74
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Xu S, Zhou GC. A Convenient Synthesis of a Lymphocyte Function-Associated Antigen-1 (LFA-1) Antagonist of ‘Compound 4’. JOURNAL OF CHEMICAL RESEARCH 2018. [DOI: 10.3184/174751918x15272594754006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The lymphocyte function-associated antigen-1 (LFA-1) antagonist of ‘Compound 4’ was synthesised by a convenient route using cheap, commercially available starting materials and catalysts under mild reaction conditions and by easily handled reactions. The total yield in the preparation of ‘Compound 4’ was more than 38% via Sonogashira coupling of an iodide and an alkyne, reduction of the alkyne catalysed by Raney nickel and later steps involving hydrolysis of an ester, condensation of an acid and an amine and a final hydrolysis of an ester.
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Affiliation(s)
- Sheng Xu
- School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing 211816, P.R. China
| | - Guo-Chun Zhou
- School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing 211816, P.R. China
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75
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Rutherford EJ, Hill ADK, Hopkins AM. Adhesion in Physiological, Benign and Malignant Proliferative States of the Endometrium: Microenvironment and the Clinical Big Picture. Cells 2018; 7:E43. [PMID: 29772648 PMCID: PMC5981267 DOI: 10.3390/cells7050043] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 05/09/2018] [Accepted: 05/11/2018] [Indexed: 12/13/2022] Open
Abstract
Although the developments in cellular and molecular biology over the last few decades have significantly advanced our understanding of the processes and players that regulate invasive disease, many areas of uncertainty remain. This review will discuss the contribution of dysregulated cell⁻cell and cell⁻matrix adhesion to the invasion in both benign and malignant contexts. Using the endometrium as an illustrative tissue that undergoes clinically significant invasion in both contexts, the adhesion considerations in the cells ("seed") and their microenvironment ("soil") will be discussed. We hope to orientate this discussion towards translational relevance for the diagnosis and treatment of endometrial conditions, which are currently associated with significant morbidity and mortality.
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Affiliation(s)
- Emily J Rutherford
- Department of Surgery, Royal College of Surgeons in Ireland, RCSI Smurfit Building, Beaumont Hospital, Dublin 9, Ireland.
| | - Arnold D K Hill
- Department of Surgery, Royal College of Surgeons in Ireland, RCSI Smurfit Building, Beaumont Hospital, Dublin 9, Ireland.
| | - Ann M Hopkins
- Department of Surgery, Royal College of Surgeons in Ireland, RCSI Smurfit Building, Beaumont Hospital, Dublin 9, Ireland.
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76
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Roxin Á, Zhang C, Huh S, Lepage ML, Zhang Z, Lin KS, Bénard F, Perrin DM. Preliminary evaluation of 18F-labeled LLP2A-trifluoroborate conjugates as VLA-4 (α 4β 1 integrin) specific radiotracers for PET imaging of melanoma. Nucl Med Biol 2018; 61:11-20. [PMID: 29597141 DOI: 10.1016/j.nucmedbio.2018.02.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 02/15/2018] [Accepted: 02/26/2018] [Indexed: 12/11/2022]
Abstract
INTRODUCTION The transmembrane α4β1 integrin receptor, or very-late antigen 4 (VLA-4), is associated with tumor metastasis and angiogenesis, the development of chemotherapeutic drug resistance, and is overexpressed in multiple myelomas, osteosarcomas, lymphomas, leukemias, and melanomas. The peptidomimetic, LLP2A, is a high-affinity ligand with specificity for the extracellular portion of VLA-4 and several conjugates have been evaluated in vivo by NIR-fluorescence, 111In-SPECT and 68Ga- and 64Cu-PET imaging, but to date, not with 18F-PET. METHODS Using two highly stable organotrifluoroborate prosthetic groups: ammoniumdimethyl-trifluoroborate (AMBF3) and a new N-pyridinyl-para-trifluoroborate (N-Pyr-p-BF3), both capable of facile aqueous 18F-labeling by isotope exchange (IEX), we present the first PET imaging evaluations of two [18F]R-BF3--PEG2-LLP2A tracers using VLA-4 overexpressing B16-F10 murine melanoma tumor mouse models. RESULTS Here, we demonstrate successful one-step 18F-labeling of both conjugates with wet NCA [18F]F- in radiochemical yields of up to 11.6% within 75 min at molar activities of 40-100 GBq/μmol. Average tumor uptake values based on ex vivo biodistribution values were 4.4%ID/g (11) and 2.8%ID/g (12) using 18F-labeled LLP2A-conjugates with the two prosthetic groups: N-Pyr-p-BF3 (5) and alkyl-N,N-dimethylammonio-BF3 (AMBF3) (7), respectively, and was found to be target-specific as evidenced by in vivo blocking controls. Dynamic PET scanning and biodistribution studies revealed slow clearance of the [18F]R-BF3--PEG2-LLP2A tracers from the tumors, and also substantial uptake in the intestines, gall bladder, liver and bladder. Observed bone uptake was blockable, consistent with known VLA-4 expression in hematopoietic stem cells found in bone marrow. CONCLUSIONS These studies show that these [18F]R-BF3--PEG2-LLP2A conjugates (11 and 12) are promising VLA-4 targeting radiotracers, yet, further optimization will be required to reduce uptake in the gastro-intestinal tract.
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Affiliation(s)
- Áron Roxin
- Chemistry Department, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Chengcheng Zhang
- Molecular Oncology, British Columbia Cancer Agency Research Center, 765 West 10th Avenue, Vancouver, British Columbia V5Z 1L3, Canada
| | - Sungjoon Huh
- Chemistry Department, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Mathieu L Lepage
- Chemistry Department, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Zhengxing Zhang
- Molecular Oncology, British Columbia Cancer Agency Research Center, 765 West 10th Avenue, Vancouver, British Columbia V5Z 1L3, Canada
| | - Kuo-Shyan Lin
- Molecular Oncology, British Columbia Cancer Agency Research Center, 765 West 10th Avenue, Vancouver, British Columbia V5Z 1L3, Canada
| | - François Bénard
- Molecular Oncology, British Columbia Cancer Agency Research Center, 765 West 10th Avenue, Vancouver, British Columbia V5Z 1L3, Canada
| | - David M Perrin
- Chemistry Department, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada.
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77
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In vasculitis of small muscular arteries, activation of vessel-infiltrating CD8 T cells seems to be antigen-independent. Virchows Arch 2017; 472:271-279. [PMID: 29128969 DOI: 10.1007/s00428-017-2264-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 09/24/2017] [Accepted: 11/02/2017] [Indexed: 10/18/2022]
Abstract
The etiology of polyarteritis nodosa (PAN) and localized PAN is still unknown, although a T cell-mediated immune mechanism has been considered. CD8 T cells participate not only in the antigen-dependent adaptive immune system, but also in the antigen-independent innate immune system. Non-antigen-activated CD8 T cells express a unique phenotype: granzyme B (GrB) positive /CD25 negative /programmed death-1 (PD-1) negative. The aims of this study were to assess the participation of T cells, especially innate CD8 T cells, in the development of vasculitis. Twenty-eight consecutive cases of skin biopsy specimens with cutaneous vasculitis of small muscular arteries (CVSMA) were retrieved. The series comprises of 21 cases of cutaneous arteritis, three cases of PAN, and four cases of rheumatoid vasculitis. Cases of antineutrophil cytoplasmic antibody-associated vasculitis were excluded. The phenotypes of infiltrating lymphocytes in vasculitis lesions were evaluated by immunohistochemistry. In most cases of CVSMA, the number of CD8 T cells infiltrating the intima was higher than that of CD4 T cells, and significant numbers of GrB-positive cells, which represent activated CD8 T cells, were observed. However, GrB/CD25-double-positive cells, which correspond to antigen-activated T cells, were very few in a small number of cases. Cells positive for PD-1, which is also expressed on antigen-activated CD8 T cells, were not detected. We conclude that a T cell-mediated immune mechanism, involving cytotoxic CD8 T cells, may play a role in the development of CVSMA. Low expression of CD25 in activated CD8 T cells suggests that activation was antigen-independent.
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78
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Hassan B, Fouilloux I, Baroukh B, Llorens A, Biosse Duplan M, Gosset M, Cherruau M, Saffar JL. Coordination of early cellular reactions during activation of bone resorption in the rat mandible periosteum: An immunohistochemical study. Heliyon 2017; 3:e00430. [PMID: 29226261 PMCID: PMC5714552 DOI: 10.1016/j.heliyon.2017.e00430] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 09/26/2017] [Accepted: 10/16/2017] [Indexed: 11/17/2022] Open
Abstract
The activation step of bone remodeling remains poorly characterized. Activation comprises determination of the site to be remodeled, osteoclast precursor recruitment, their migration to the site of remodeling, and differentiation. These actions involve different compartments and cell types. The aim of this study was to investigate events and cell types involved during activation. We used a bone remodeling model in rats where extractions of the upper jaw molars initiate remodeling of the antagonist lower jaw (mandible) cortex along the periosteum. In this model osteoclastic resorption peaks 4 days after extractions. We previously reported that mast cell activation in the periosteum fibrous compartment is an early event of activation, associated with recruitment of circulating monocyte osteoclast precursors. By using immunohistochemistry, we observed 9 hours after induction a spatially oriented expression of InterCellular Adhesion Molecule-1 in the vessels that was inhibited by antagonists of histamine receptors 1 and 2. It was followed at 12 hours by the recruitment of ED1+ monocytes. In parallel, at 9 hours, Vascular Cellular Adhesion Molecule-1+ fibroblast-like cells scattered in the fibrous compartment of the periosteum between the vessels and the osteogenic compartment increased; these cells may be implicated in osteoclast precursor migration. Receptor Activator of NF KappaB Ligand+ cells increased at 12 hours in the osteogenic compartment and reached a peak at 18 hours. At 24 hours the numbers of osteogenic cells and subjacent osteocytes expressing semaphorin 3a, a repulsive for osteoclast precursors, decreased before returning to baseline at 48 hours. These data show that during activation the two periosteum compartments and several cell types are coordinated to recruit and guide osteoclast precursors towards the bone surface.
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Affiliation(s)
- Bassam Hassan
- EA2496 Laboratoire Pathologies, Imagerie et Biothérapies oro-faciales, Faculté de Chirurgie Dentaire, Université Paris Descartes, Sorbonne Paris Cité, Montrouge, France
| | - Isabelle Fouilloux
- EA2496 Laboratoire Pathologies, Imagerie et Biothérapies oro-faciales, Faculté de Chirurgie Dentaire, Université Paris Descartes, Sorbonne Paris Cité, Montrouge, France
- Assistance Publique − Hôpitaux de Paris, Paris, France
| | - Brigitte Baroukh
- EA2496 Laboratoire Pathologies, Imagerie et Biothérapies oro-faciales, Faculté de Chirurgie Dentaire, Université Paris Descartes, Sorbonne Paris Cité, Montrouge, France
| | - Annie Llorens
- EA2496 Laboratoire Pathologies, Imagerie et Biothérapies oro-faciales, Faculté de Chirurgie Dentaire, Université Paris Descartes, Sorbonne Paris Cité, Montrouge, France
| | - Martin Biosse Duplan
- INSERM U1163, Institut Imagine, Université Paris Descartes, Sorbonne Paris Cité, Hôpital Necker-Enfants Malades Paris, France
- Assistance Publique − Hôpitaux de Paris, Paris, France
| | - Marjolaine Gosset
- EA2496 Laboratoire Pathologies, Imagerie et Biothérapies oro-faciales, Faculté de Chirurgie Dentaire, Université Paris Descartes, Sorbonne Paris Cité, Montrouge, France
- Assistance Publique − Hôpitaux de Paris, Paris, France
| | - Marc Cherruau
- EA2496 Laboratoire Pathologies, Imagerie et Biothérapies oro-faciales, Faculté de Chirurgie Dentaire, Université Paris Descartes, Sorbonne Paris Cité, Montrouge, France
- Assistance Publique − Hôpitaux de Paris, Paris, France
| | - Jean-Louis Saffar
- EA2496 Laboratoire Pathologies, Imagerie et Biothérapies oro-faciales, Faculté de Chirurgie Dentaire, Université Paris Descartes, Sorbonne Paris Cité, Montrouge, France
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79
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Cheng G, Shan XF, Wang XL, Dong WW, Li Z, Liu XH, Zhang W, Xing K, Chang FJ. Endothelial damage effects of circulating microparticles from patients with stable angina are reduced by aspirin through ERK/p38 MAPKs pathways. Cardiovasc Ther 2017; 35. [PMID: 28520220 DOI: 10.1111/1755-5922.12273] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 04/11/2017] [Accepted: 05/14/2017] [Indexed: 01/11/2023] Open
Affiliation(s)
- Gong Cheng
- Department of Cardiology; Shaanxi Provincial People's Hospital; Xi'an Shaanxi China
| | - Xue-Feng Shan
- Department of Children's Cardiac surgery; First Affiliated Hospital of Xinjiang Medical University; Urumuqi Xinjiang China
| | - Xu-Lang Wang
- Department of Nursing; Xian'yang Vocational and Technical College; Xian'yang Shaanxi China
| | - Wei-Wei Dong
- Xinjiang Petroleum Institute; Urumuqi Xinjiang China
| | - Zhe Li
- Department of Cardiology; Shaanxi Provincial People's Hospital; Xi'an Shaanxi China
| | - Xin-Hong Liu
- Department of Cardiology; Shaanxi Provincial People's Hospital; Xi'an Shaanxi China
| | - Wei Zhang
- Department of Cardiology; Shaanxi Provincial People's Hospital; Xi'an Shaanxi China
| | - Kun Xing
- Department of Cardiology; Shaanxi Provincial People's Hospital; Xi'an Shaanxi China
| | - Feng-Jun Chang
- Department of Cardiology; Shaanxi Provincial People's Hospital; Xi'an Shaanxi China
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80
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A Protective Role of Glibenclamide in Inflammation-Associated Injury. Mediators Inflamm 2017; 2017:3578702. [PMID: 28740332 PMCID: PMC5504948 DOI: 10.1155/2017/3578702] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 03/26/2017] [Accepted: 04/06/2017] [Indexed: 12/13/2022] Open
Abstract
Glibenclamide is the most widely used sulfonylurea drug for the treatment of type 2 diabetes mellitus (DM). Recent studies have suggested that glibenclamide reduced adverse neuroinflammation and improved behavioral outcomes following central nervous system (CNS) injury. We reviewed glibenclamide's anti-inflammatory effects: abundant evidences have shown that glibenclamide exerted an anti-inflammatory effect in respiratory, digestive, urological, cardiological, and CNS diseases, as well as in ischemia-reperfusion injury. Glibenclamide might block KATP channel, Sur1-Trpm4 channel, and NOD-like receptor pyrin domain containing 3 (NLRP3) inflammasome activation, decrease the production of proinflammatory mediators (TNF-α, IL-1β, and reactive oxygen species), and suppress the accumulation of inflammatory cells. Glibenclamide's anti-inflammation warrants further investigation.
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81
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Liu SC, Chiu CP, Tsai CH, Hung CY, Li TM, Wu YC, Tang CH. Soya-cerebroside, an extract of Cordyceps militaris, suppresses monocyte migration and prevents cartilage degradation in inflammatory animal models. Sci Rep 2017; 7:43205. [PMID: 28225075 PMCID: PMC5320555 DOI: 10.1038/srep43205] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Accepted: 01/20/2017] [Indexed: 01/15/2023] Open
Abstract
Pathophysiological events that modulate the progression of structural changes in osteoarthritis (OA) include the secretion of inflammatory molecules, such as proinflammatory cytokines. Interleukin-1beta (IL-1β) is the prototypical inflammatory cytokine that activates OA synovial cells to release cytokines and chemokines in support of the inflammatory response. The monocyte chemoattractant protein-1 (MCP-1/CCL2) is one of the key chemokines that regulate migration and infiltration of monocytes in response to inflammation. We show in this study that IL-1β-induced MCP-1 expression and monocyte migration in OA synovial fibroblasts (OASFs) is effectively inhibited by soya-cerebroside, an extract of Cordyceps militaris. We found that soya-cerebroside up-regulated of microRNA (miR)-432 expression via inhibiting AMPK and AKT signaling pathways in OASFs. Soya-cerebroside also effectively decreased monocyte infiltration and prevented cartilage degradation in a rat inflammatory model. Our findings are the first to demonstrate that soya-cerebroside inhibits monocyte/macrophage infiltration into synoviocytes, attenuating synovial inflammation and preventing cartilage damage by reducing MCP-1 expression in vitro and in vivo. Taken together, we suggest a novel therapeutic strategy based on the use of soya-cerebroside for the management of OA.
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Affiliation(s)
- Shan-Chi Liu
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan.,Department of Orthopedic Surgery, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Ching-Peng Chiu
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chun-Hao Tsai
- Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan.,Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan
| | - Chun-Yin Hung
- Department of Orthopaedic Surgery, China Medical University Beigang Hospital, Yun-Lin County, Taiwan
| | - Te-Mao Li
- School of Chinese Medicine, China Medical University, Taichung, Taiwan
| | - Yang-Chang Wu
- School of Pharmacy, College of Pharmacy, China Medical University, Taichung, Taiwan.,Research Center for Chinese Herbal Medicine, China Medical University, Taichung, Taiwan.,Chinese Medicine Research and Development Center, China Medical University Hospital, Taiwan.,Center of Molecular Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Chih-Hsin Tang
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan.,Department of Pharmacology, School of Medicine, China Medical University, Taichung, Taiwan.,Department of Biotechnology, College of Health Science, Asia University, Taichung, Taiwan
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82
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Filipello F, Pozzi D, Proietti M, Romagnani A, Mazzitelli S, Matteoli M, Verderio C, Grassi F. Ectonucleotidase activity and immunosuppression in astrocyte-CD4 T cell bidirectional signaling. Oncotarget 2017; 7:5143-56. [PMID: 26784253 PMCID: PMC4868677 DOI: 10.18632/oncotarget.6914] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Accepted: 01/01/2016] [Indexed: 12/04/2022] Open
Abstract
Astrocytes play a crucial role in neuroinflammation as part of the glia limitans, which regulates infiltration of the brain parenchyma by leukocytes. The signaling pathways and molecular events, which result from the interaction of activated T cells with astrocytes are poorly defined. Here we show that astrocytes promote the expression and enzymatic activity of CD39 and CD73 ectonucleotidases in recently activated CD4 cells by a contact dependent mechanism that is independent of T cell receptor interaction with class II major histocompatibility complex (MHC). Transforming growth factor-β (TGF-β) is robustly upregulated and sufficient to promote ectonucleotidases expression. T cell adhesion to astrocyte results in differentiation to an immunosuppressive phenotype defined by expression of the transcription factor Rorγt, which characterizes the CD4 T helper 17 subset. CD39 activity in T cells in turn inhibits spontaneous calcium oscillations in astrocytes that correlated with enhanced and reduced transcription of CCL2 chemokine and Sonic hedgehog (Shh), respectively. We hypothesize this TCR-independent interaction promote an immunosuppressive program in T cells to control possible brain injury by deregulated T cell activation during neuroinflammation. On the other hand, the increased secretion of CCL2 with concomitant reduction of Shh might promote leukocytes extravasation into the brain parenchyma.
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Affiliation(s)
- Fabia Filipello
- Laboratory of Pharmacology and Brain Pathology, Humanitas Clinical and Research Center, Rozzano, Italy
| | - Davide Pozzi
- Laboratory of Pharmacology and Brain Pathology, Humanitas Clinical and Research Center, Rozzano, Italy
| | - Michele Proietti
- Institute for Research in Biomedicine, Bellinzona, Switzerland.,Center of Chronic Immunodeficiency, University Medical Center, Freiburg, Germany
| | - Andrea Romagnani
- Institute for Research in Biomedicine, Bellinzona, Switzerland.,Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
| | - Sonia Mazzitelli
- Laboratory of Pharmacology and Brain Pathology, Humanitas Clinical and Research Center, Rozzano, Italy.,Hertie Institute for Clinical Brain Research, University of Tubingen, Department of Cellular Neurology, Tubingen, Germany
| | - Michela Matteoli
- Laboratory of Pharmacology and Brain Pathology, Humanitas Clinical and Research Center, Rozzano, Italy.,CNR Institute of Neuroscience, Milano, Italy
| | - Claudia Verderio
- Laboratory of Pharmacology and Brain Pathology, Humanitas Clinical and Research Center, Rozzano, Italy.,CNR Institute of Neuroscience, Milano, Italy
| | - Fabio Grassi
- Institute for Research in Biomedicine, Bellinzona, Switzerland.,Department of Medical Biotechnology and Translational Medicine, University of Milan, Istituto Nazionale di Genetica Molecolare, Milan, Italy
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83
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Abstract
Peptides have been used as drugs to treat various health conditions, and they are also being developed as diagnostic agents. Due to their receptor selectivity, peptides have recently been utilized for drug delivery to target drug molecules to specific types of cells (i.e. cancer cells, immune cells) to lower the side effects of the drugs. In this case, the drug is conjugated to the carrier peptide for directing the drug to the target cells (e.g. cancer cells) with higher expression of a specific receptor that recognizes the carrier peptide. As a result, the drug is directed to the target diseased cells without affecting the normal cells. Peptides are also being developed for improving drug delivery through the intestinal mucosa barrier (IMB) and the blood-brain barrier (BBB). These peptides were derived from intercellular junction proteins such as occludins, claudins, and cadherins and improve drug delivery through the IMB and BBB via the paracellular pathways. It is hypothesized that the peptides modulate protein-protein interactions in the intercellular junctions of the IMB and BBB to increase the porosity of paracellular pathways of the barriers. These modulator peptides have been shown to enhance brain delivery of small molecules and medium-sized peptides as well as a large protein such as 65 kDa albumin. In the future, this method has the potential to improve oral and brain delivery of therapeutic and diagnostic peptides and proteins.
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84
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Moral MEG, Siahaan TJ. Conjugates of Cell Adhesion Peptides for Therapeutics and Diagnostics Against Cancer and Autoimmune Diseases. Curr Top Med Chem 2017; 17:3425-3443. [PMID: 29357802 PMCID: PMC5835217 DOI: 10.2174/1568026618666180118154514] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Revised: 12/29/2017] [Accepted: 01/11/2018] [Indexed: 12/27/2022]
Abstract
Overexpressed cell-surface receptors are hallmarks of many disease states and are often used as markers for targeting diseased cells over healthy counterparts. Cell adhesion peptides, which are often derived from interacting regions of these receptor-ligand proteins, mimic surfaces of intact proteins and, thus, have been studied as targeting agents for various payloads to certain cell targets for cancers and autoimmune diseases. Because many cytotoxic agents in the free form are often harmful to healthy cells, the use of cell adhesion peptides in targeting their delivery to diseased cells has been studied to potentially reduce required effective doses and associated harmful side-effects. In this review, multiple cell adhesion peptides from extracellular matrix and ICAM proteins were used to selectively direct drug payloads, signal-inhibitor peptides, and diagnostic molecules, to diseased cells over normal counterparts. RGD constructs have been used to improve the selectivity and efficacy of diagnostic and drug-peptide conjugates against cancer cells. From this precedent, novel conjugates of antigenic and cell adhesion peptides, called Bifunctional Peptide Inhibitors (BPIs), have been designed to selectively regulate immune cells and suppress harmful inflammatory responses in autoimmune diseases. Similar peptide conjugations with imaging agents have delivered promising diagnostic methods in animal models of rheumatoid arthritis. BPIs have also been shown to generate immune tolerance and suppress autoimmune diseases in animal models of type-1 diabetes, rheumatoid arthritis, and multiple sclerosis. Collectively, these studies show the potential of cell adhesion peptides in improving the delivery of drugs and diagnostic agents to diseased cells in clinical settings.
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Affiliation(s)
- Mario E G Moral
- Department of Pharmaceutical Chemistry, The University of Kansas, Simons Laboratory, 2095 Constant Ave., Lawrence, Kansas 66047, United States
| | - Teruna J Siahaan
- Department of Pharmaceutical Chemistry, The University of Kansas, Simons Laboratory, 2095 Constant Ave., Lawrence, Kansas 66047, United States
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85
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Park RJ, Wang T, Koundakjian D, Hultquist JF, Lamothe-Molina P, Monel B, Schumann K, Yu H, Krupzcak KM, Garcia-Beltran W, Piechocka-Trocha A, Krogan NJ, Marson A, Sabatini DM, Lander ES, Hacohen N, Walker BD. A genome-wide CRISPR screen identifies a restricted set of HIV host dependency factors. Nat Genet 2016; 49:193-203. [PMID: 27992415 DOI: 10.1038/ng.3741] [Citation(s) in RCA: 227] [Impact Index Per Article: 28.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 11/15/2016] [Indexed: 12/14/2022]
Abstract
Host proteins are essential for HIV entry and replication and can be important nonviral therapeutic targets. Large-scale RNA interference (RNAi)-based screens have identified nearly a thousand candidate host factors, but there is little agreement among studies and few factors have been validated. Here we demonstrate that a genome-wide CRISPR-based screen identifies host factors in a physiologically relevant cell system. We identify five factors, including the HIV co-receptors CD4 and CCR5, that are required for HIV infection yet are dispensable for cellular proliferation and viability. Tyrosylprotein sulfotransferase 2 (TPST2) and solute carrier family 35 member B2 (SLC35B2) function in a common pathway to sulfate CCR5 on extracellular tyrosine residues, facilitating CCR5 recognition by the HIV envelope. Activated leukocyte cell adhesion molecule (ALCAM) mediates cell aggregation, which is required for cell-to-cell HIV transmission. We validated these pathways in primary human CD4+ T cells through Cas9-mediated knockout and antibody blockade. Our findings indicate that HIV infection and replication rely on a limited set of host-dispensable genes and suggest that these pathways can be studied for therapeutic intervention.
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Affiliation(s)
- Ryan J Park
- Ragon Institute of Massachusetts General Hospital (MGH), Massachusetts Institute of Technology (MIT), and Harvard University, Cambridge, Massachusetts, USA.,Harvard-MIT Health Sciences and Technology, Harvard Medical School, Boston, Massachusetts, USA.,Broad Institute of MIT and Harvard University, Cambridge, Massachusetts, USA
| | - Tim Wang
- Broad Institute of MIT and Harvard University, Cambridge, Massachusetts, USA.,Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.,Whitehead Institute for Biomedical Research, Cambridge, Massachusetts, USA.,David H. Koch Institute for Integrative Cancer Research at MIT, Cambridge, Massachusetts, USA
| | - Dylan Koundakjian
- Ragon Institute of Massachusetts General Hospital (MGH), Massachusetts Institute of Technology (MIT), and Harvard University, Cambridge, Massachusetts, USA
| | - Judd F Hultquist
- Department of Cellular and Molecular Pharmacology, California Institute for Quantitative Biosciences, QB3, University of California at San Francisco (UCSF), San Francisco, California, USA.,Gladstone Institute of Virology and Immunology, J. David Gladstone Institutes, San Francisco, California, USA
| | - Pedro Lamothe-Molina
- Ragon Institute of Massachusetts General Hospital (MGH), Massachusetts Institute of Technology (MIT), and Harvard University, Cambridge, Massachusetts, USA.,Biological Sciences in Public Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Blandine Monel
- Ragon Institute of Massachusetts General Hospital (MGH), Massachusetts Institute of Technology (MIT), and Harvard University, Cambridge, Massachusetts, USA.,Howard Hughes Medical Institute, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Kathrin Schumann
- Department of Microbiology and Immunology, University of California at San Francisco, San Francisco, California, USA
| | - Haiyan Yu
- Broad Institute of MIT and Harvard University, Cambridge, Massachusetts, USA
| | - Kevin M Krupzcak
- Whitehead Institute for Biomedical Research, Cambridge, Massachusetts, USA
| | - Wilfredo Garcia-Beltran
- Ragon Institute of Massachusetts General Hospital (MGH), Massachusetts Institute of Technology (MIT), and Harvard University, Cambridge, Massachusetts, USA.,Harvard-MIT Health Sciences and Technology, Harvard Medical School, Boston, Massachusetts, USA
| | - Alicja Piechocka-Trocha
- Ragon Institute of Massachusetts General Hospital (MGH), Massachusetts Institute of Technology (MIT), and Harvard University, Cambridge, Massachusetts, USA
| | - Nevan J Krogan
- Department of Cellular and Molecular Pharmacology, California Institute for Quantitative Biosciences, QB3, University of California at San Francisco (UCSF), San Francisco, California, USA.,Gladstone Institute of Virology and Immunology, J. David Gladstone Institutes, San Francisco, California, USA
| | - Alexander Marson
- Department of Microbiology and Immunology, University of California at San Francisco, San Francisco, California, USA.,Diabetes Center, University of California at San Francisco, San Francisco, California, USA.,Department of Medicine, University of California at San Francisco, San Francisco, California, USA.,Innovative Genomics Initiative (IGI), University of California, Berkeley, Berkeley, California, USA.,UCSF Helen Diller Family Comprehensive Cancer Center, University of California at San Francisco, San Francisco, California, USA
| | - David M Sabatini
- Broad Institute of MIT and Harvard University, Cambridge, Massachusetts, USA.,Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.,Whitehead Institute for Biomedical Research, Cambridge, Massachusetts, USA.,David H. Koch Institute for Integrative Cancer Research at MIT, Cambridge, Massachusetts, USA.,Howard Hughes Medical Institute, Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Eric S Lander
- Broad Institute of MIT and Harvard University, Cambridge, Massachusetts, USA.,Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.,Department of Systems Biology, Harvard Medical School, Boston, Massachusetts, USA
| | - Nir Hacohen
- Broad Institute of MIT and Harvard University, Cambridge, Massachusetts, USA.,Massachusetts General Hospital Cancer Center, Boston, Massachusetts, USA
| | - Bruce D Walker
- Ragon Institute of Massachusetts General Hospital (MGH), Massachusetts Institute of Technology (MIT), and Harvard University, Cambridge, Massachusetts, USA.,Broad Institute of MIT and Harvard University, Cambridge, Massachusetts, USA.,Howard Hughes Medical Institute, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA.,Institute of Medical Engineering and Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
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86
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Neovestitol, an isoflavonoid isolated from Brazilian red propolis, reduces acute and chronic inflammation: involvement of nitric oxide and IL-6. Sci Rep 2016; 6:36401. [PMID: 27819273 PMCID: PMC5098247 DOI: 10.1038/srep36401] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Accepted: 10/10/2016] [Indexed: 12/25/2022] Open
Abstract
Isoflavonoids have been largely studied due to their distinct biological activities identified thus far. Herein, we evaluated the activity of neovestitol, an isoflavonoid isolated from Brazilian red propolis, in acute and chronic inflammation. As for acute inflammation, we found that neovestitol reduced neutrophil migration, leukocyte rolling and adhesion, as well as expression of ICAM-1 in the mesenteric microcirculation during lipopolysaccharide-induced acute peritonitis. No changes were observed in the levels of TNF-α, CXCL1/KC and CXCL2/MIP-2 upon pretreatment with neovestitol. The administration of an inducible nitric oxide synthase (iNOS) inhibitor abolished the inhibitory effects of neovestitol in neutrophil migration and ICAM-1 expression. Nitrite levels increased upon treatment with neovestitol. No effects of neovestitol were observed on the chemotaxis of neutrophils in vitro. As for chronic inflammation, neovestitol also reduced the clinical score and joint damage in a collagen-induced arthritis model. There was no change in the frequency of IL-17-producing TCD4+ cells. In addition, pretreatment with neovestitol reduced the levels of IL-6. These results demonstrate a potential anti-inflammatory activity of neovestitol, which may be useful for therapeutic purposes and/or as a nutraceutical.
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87
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Humeres C, Vivar R, Boza P, Muñoz C, Bolivar S, Anfossi R, Osorio JM, Olivares-Silva F, García L, Díaz-Araya G. Cardiac fibroblast cytokine profiles induced by proinflammatory or profibrotic stimuli promote monocyte recruitment and modulate macrophage M1/M2 balance in vitro. J Mol Cell Cardiol 2016; 101:S0022-2828(16)30392-3. [PMID: 27983968 DOI: 10.1016/j.yjmcc.2016.10.014] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 10/24/2016] [Accepted: 10/25/2016] [Indexed: 12/13/2022]
Abstract
Macrophage polarization plays an essential role in cardiac remodeling after injury, evolving from an initial accumulation of proinflammatory M1 macrophages to a greater balance of anti-inflammatory M2 macrophages. Whether cardiac fibroblasts themselves influence this process remains an intriguing question. In this work, we present evidence for a role of cardiac fibroblasts (CF) as regulators of macrophage recruitment and skewing. Adult rat CF, were treated with lipopolysaccharide (LPS) or TGF-β1, to evaluate ICAM-1 and VCAM-1 expression using Western blot and proinflammatory/profibrotic cytokine secretion using LUMINEX. We performed in vitro migration and adhesion assays of rat spleen monocytes to layers of TGF-β1- or LPS-pretreated CF. Finally, TGF-β1- or LPS-pretreated CF were co-cultured with monocyte, to evaluate their effects on macrophage polarization, using flow cytometry and cytokine secretion. There was a significant increase in monocyte adhesion to LPS- or TGF-β1-stimulated CF, associated with increased CF expression of ICAM-1 and VCAM-1. siRNA silencing of either ICAM-1 or VCAM-1 inhibited monocyte adhesion to LPS-pretreated CF; however, monocyte adhesion to TGF-β1-treated CF was dependent on only VCAM-1 expression. Pretreatment of CF with LPS or TGF-β1 increased monocyte migration to CF, and this effect was completely abolished with an MCP-1 antibody blockade. LPS-treated CF secreted elevated levels of TNF-α and MCP-1, and when co-cultured with monocyte, LPS-treated CF stimulated increased macrophage M1 polarization and secretion of proinflammatory cytokines (TNF-α, IL-12 and MCP-1). On the other hand, CF stimulated with TGF-β1 produced an anti-inflammatory cytokine profile (high IL-10 and IL-5, low TNF-α). When co-cultured with monocytes, the TGF-β1 stimulated fibroblasts skewed monocyte differentiation towards M2 macrophages accompanied by increased IL-10 and decreased IL-12 levels. Taken together, our results show for the first time that CF can recruit monocytes (via MCP-1-mediated chemotaxis and adhesion to ICAM-1/VCAM-1) and induce their differentiation to M1 or M2 macrophages (through the CF cytokine profile induced by proinflammatory or profibrotic stimuli).
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Affiliation(s)
- Claudio Humeres
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile,Chile
| | - Raúl Vivar
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile,Chile; Centro Avanzado de Enfermedades Crónicas (ACCDis), Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile,Chile
| | - Pia Boza
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile,Chile
| | - Claudia Muñoz
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile,Chile
| | - Samir Bolivar
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile,Chile
| | - Renatto Anfossi
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile,Chile
| | - Jose Miguel Osorio
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile,Chile
| | - Francisco Olivares-Silva
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile,Chile
| | - Lorena García
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile,Chile; Centro Avanzado de Enfermedades Crónicas (ACCDis), Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile,Chile
| | - Guillermo Díaz-Araya
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile,Chile; Centro Avanzado de Enfermedades Crónicas (ACCDis), Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile,Chile.
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88
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Christensen M, Jensen JB, Jakobsen S, Jessen N, Frøkiær J, Kemp BE, Marciszyn AL, Li H, Pastor-Soler NM, Hallows KR, Nørregaard R. Renoprotective Effects of Metformin are Independent of Organic Cation Transporters 1 &2 and AMP-activated Protein Kinase in the Kidney. Sci Rep 2016; 6:35952. [PMID: 27782167 PMCID: PMC5080611 DOI: 10.1038/srep35952] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Accepted: 10/07/2016] [Indexed: 01/11/2023] Open
Abstract
The type-2 diabetes drug metformin has proven to have protective effects in several renal disease models. Here, we investigated the protective effects in a 3-day unilateral ureteral obstruction (3dUUO) mouse model. Compared with controls, ureteral obstructed animals displayed increased tubular damage and inflammation. Metformin treatment attenuated inflammation, increased the anti-oxidative response and decreased tubular damage. Hepatic metformin uptake depends on the expression of organic cation transporters (OCTs). To test whether the effects of metformin in the kidney are dependent on these transporters, we tested metformin treatment in OCT1/2-/- mice. Even though exposure of metformin in the kidney was severely decreased in OCT1/2-/- mice when evaluated with [11C]-Metformin and PET/MRI, we found that the protective effects of metformin were OCT1/2 independent when tested in this model. AMP-activated protein kinase (AMPK) has been suggested as a key mediator of the effects of metformin. When using an AMPK-β1 KO mouse model, the protective effects of metformin still occurred in the 3dUUO model. In conclusion, these results show that metformin has a beneficial effect in early stages of renal disease induced by 3dUUO. Furthermore, these effects appear to be independent of the expression of OCT1/2 and AMPK-β1, the most abundant AMPK-β isoform in the kidney.
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Affiliation(s)
| | - Jonas B. Jensen
- Department of Clinical Medicine, Aarhus University, Denmark
- Department of Nuclear Medicine and PET Centre, Aarhus University Hospital, Denmark
| | - Steen Jakobsen
- Department of Nuclear Medicine and PET Centre, Aarhus University Hospital, Denmark
| | - Niels Jessen
- Department of Clinical Medicine, Aarhus University, Denmark
| | - Jørgen Frøkiær
- Department of Clinical Medicine, Aarhus University, Denmark
- Department of Nuclear Medicine and PET Centre, Aarhus University Hospital, Denmark
| | - Bruce E. Kemp
- St. Vincent’s Institute of Medical Research, University of Melbourne, Mary MacKillop Institute for Health Research Australian Catholic University, Victoria Parade, Fitzroy VIC 3065, Australia
| | - Allison L. Marciszyn
- Renal-Electrolyte Division, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Hui Li
- Renal-Electrolyte Division, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
- Division of Nephrology and Hypertension, Department of Medicine and USC/UKRO Kidney Research Center, University of Southern California Keck School of Medicine, Los Angeles, CA, USA
| | - Núria M. Pastor-Soler
- Renal-Electrolyte Division, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
- Division of Nephrology and Hypertension, Department of Medicine and USC/UKRO Kidney Research Center, University of Southern California Keck School of Medicine, Los Angeles, CA, USA
| | - Kenneth R. Hallows
- Renal-Electrolyte Division, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
- Division of Nephrology and Hypertension, Department of Medicine and USC/UKRO Kidney Research Center, University of Southern California Keck School of Medicine, Los Angeles, CA, USA
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89
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Kulkarni M, Bowman E, Gabriel J, Amburgy T, Mayne E, Zidar DA, Maierhofer C, Turner AN, Bazan JA, Koletar SL, Lederman MM, Sieg SF, Funderburg NT. Altered Monocyte and Endothelial Cell Adhesion Molecule Expression Is Linked to Vascular Inflammation in Human Immunodeficiency Virus Infection. Open Forum Infect Dis 2016; 3:ofw224. [PMID: 28066794 PMCID: PMC5198584 DOI: 10.1093/ofid/ofw224] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 10/14/2016] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Human immunodeficiency virus (HIV)-infected individuals have increased risk for vascular thrombosis, potentially driven by interactions between activated leukocytes and the endothelium. METHODS Monocyte subsets (CD14+CD16-, CD14+CD16+, CD14DimCD16+) from HIV negative (HIV-) and antiretroviral therapy-treated HIV positive (HIV+) participants (N = 19 and 49) were analyzed by flow cytometry for adhesion molecule expression (lymphocyte function-associated antigen 1 [LFA-1], macrophage-1 antigen [Mac-1], CD11c/CD18, very late antigen [VLA]-4) and the fractalkine receptor (CX3CR1); these receptors recognize ligands (intercellular adhesion molecules [ICAMs], vascular cell adhesion molecule [VCAM]-1, fractalkine) on activated endothelial cells (ECs) and promote vascular migration. Plasma markers of monocyte (soluble [s]CD14, sCD163) and EC (VCAM-1, ICAM-1,2, fractalkine) activation and systemic (tumor necrosis factor receptor [TNFR-I], TNFR-II) and vascular (lipoprotein-associated phospholipase A2 [Lp-PLA2]) inflammation were measured by enzyme-linked immunosorbent assay. RESULTS Proportions of CD16+ monocyte subsets were increased in HIV+ participants. Among all monocyte subsets, levels of LFA-1 were increased and CX3CR1 levels were decreased in HIV+ participants (P < .01). Levels of sCD163, sCD14, fractalkine, ICAM-1, VCAM-1, TNFR-II, and Lp-PLA2 were also increased in HIV+ participants (P < .05), and levels of sCD14, TNFR-I, and TNFR-II were directly related to ICAM-1 and VCAM-1 levels in HIV+ participants. Expression of CX3CR1 on monocyte subsets was inversely related to plasma Lp-PLA2 (P < .05 for all). CONCLUSIONS Increased proportions of CD16+ monocytes, cells with altered adhesion molecule expression, combined with elevated levels of their ligands, may promote vascular inflammation in HIV infection.
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Affiliation(s)
- Manjusha Kulkarni
- School of Health and Rehabilitation Sciences, Division of Medical Laboratory Science, Ohio State University , Columbus
| | - Emily Bowman
- School of Health and Rehabilitation Sciences, Division of Medical Laboratory Science, Ohio State University , Columbus
| | - Janelle Gabriel
- School of Health and Rehabilitation Sciences, Division of Medical Laboratory Science, Ohio State University , Columbus
| | - Taylor Amburgy
- School of Health and Rehabilitation Sciences, Division of Medical Laboratory Science, Ohio State University , Columbus
| | - Elizabeth Mayne
- National Health Laboratory Service and Faculty of Health Sciences, University of Witwatersrand , Johannesburg
| | - David A Zidar
- Harrington Heart & Vascular Institute, University Hospitals Case Medical Center , Cleveland, Ohio
| | - Courtney Maierhofer
- Department of Medicine, Division of Infectious Diseases, Ohio State University , Columbus
| | - Abigail Norris Turner
- Department of Medicine, Division of Infectious Diseases, Ohio State University , Columbus
| | - Jose A Bazan
- Department of Medicine, Division of Infectious Diseases, Ohio State University , Columbus
| | - Susan L Koletar
- Department of Medicine, Division of Infectious Diseases, Ohio State University , Columbus
| | - Michael M Lederman
- Department of Internal Medicine, Division of Infectious Diseases, Case Western Reserve University/University Hospitals of Cleveland , Ohio
| | - Scott F Sieg
- Department of Internal Medicine, Division of Infectious Diseases, Case Western Reserve University/University Hospitals of Cleveland , Ohio
| | - Nicholas T Funderburg
- School of Health and Rehabilitation Sciences, Division of Medical Laboratory Science, Ohio State University , Columbus
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90
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Amano W, Nakajima S, Yamamoto Y, Tanimoto A, Matsushita M, Miyachi Y, Kabashima K. JAK inhibitor JTE-052 regulates contact hypersensitivity by downmodulating T cell activation and differentiation. J Dermatol Sci 2016; 84:258-265. [PMID: 27665390 DOI: 10.1016/j.jdermsci.2016.09.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 09/08/2016] [Accepted: 09/13/2016] [Indexed: 12/30/2022]
Abstract
BACKGROUND Using JAK inhibitors to inhibit cytokine signaling is presumed to be a possible means of treating skin inflammatory disorders such as contact dermatitis. OBJECTIVE To clarify the action site of JAK inhibitors in skin inflammatory disorders. METHODS We analyzed the mechanism of action of the JAK inhibitor JTE-052 using murine skin inflammation models, including contact hypersensitivity (CHS) and irritant contact dermatitis. Cells isolated from ear tissue or lymph node (LN) were analyzed by flow cytometry. The amounts of cytokines in the culture medium were measured by ELISA or bead array system. Proliferation of LN cells was evaluated by measurement of tritiated thymidine incorporation. RESULTS Oral administration of JTE-052 during both sensitization and elicitation phase attenuated CHS, but did not affect croton oil-induced irritant contact dermatitis. JTE-052 potently inhibited T cell proliferation and activation by antigen presentation in vitro, and attenuated skin inflammation in a sensitized-lymphocyte transfer model without suppressing T cell migration. JTE-052 did not affect hapten-induced cutaneous dendritic cell migration into draining lymph nodes or their costimulatory molecule expressions. CONCLUSION The JAK inhibitor JTE-052 exerts an inhibitory effect on antigen-specific T cell activation and subsequent inflammation in acquired skin immunity, such as CHS.
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Affiliation(s)
- Wataru Amano
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan; Central Pharmaceutical Research Institute, Japan Tobacco, Japan
| | - Saeko Nakajima
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yasuo Yamamoto
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan; Central Pharmaceutical Research Institute, Japan Tobacco, Japan
| | - Atsuo Tanimoto
- Central Pharmaceutical Research Institute, Japan Tobacco, Japan
| | | | - Yoshiki Miyachi
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Kenji Kabashima
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan.
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91
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Kim MY, Cho JY. Molecular association of CD98, CD29, and CD147 critically mediates monocytic U937 cell adhesion. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2016; 20:515-23. [PMID: 27610038 PMCID: PMC5014998 DOI: 10.4196/kjpp.2016.20.5.515] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 07/05/2016] [Accepted: 07/25/2016] [Indexed: 12/15/2022]
Abstract
Adhesion events of monocytes represent an important step in inflammatory responses induced by chemokines. The β1-integrin CD29 is a major adhesion molecule regulating leukocyte migration and extravasation. Although several adhesion molecules have been known as regulators of CD29, the molecular interactions between CD29 and its regulatory adhesion molecules (such as CD98 and CD147) have not been fully elucidated. Therefore, in this study, we examined whether these molecules are functionally, biochemically, and cell-biologically associated using monocytic U937 cells treated with aggregation-stimulating and blocking antibodies, as well as enzyme inhibitors. The surface levels of CD29, CD98, and CD147 (but not CD43, CD44, and CD82) were increased. The activation of CD29, CD98, and CD147 by ligation of them with aggregation-activating antibodies triggered the induction of cell-cell adhesion, and sensitivity to various enzyme inhibitors and aggregation-blocking antibodies was similar for CD29-, CD98-, and CD147-induced U937 cell aggregation. Molecular association between these molecules and the actin cytoskeleton was confirmed by confocal microscopy and immunoprecipitation. These results strongly suggest that CD29 might be modulated by its biochemical and cellular regulators, including CD98 and CD147, via the actin cytoskeleton.
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Affiliation(s)
- Mi-Yeon Kim
- School of Systems Biomedical Science, Soongsil University, Seoul 06978, Korea
| | - Jae Youl Cho
- Depatment of Genetic Engineering, Sungkyunkwan University, Suwon 16419, Korea
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92
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Kachlany SC. Mechanisms of LtxA (Leukotoxin), a Potent New Anti-Inflammatory Agent for the Treatment of Alopecia Areata. J Investig Dermatol Symp Proc 2016; 17:19-22. [PMID: 26551939 DOI: 10.1038/jidsymp.2015.34] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Alopecia areata is an autoimmune condition where activated, pro-inflammatory white blood cells (WBCs) attack the hair follicles, resulting in hair loss. Migration of these activated WBCs from the blood stream and into the follicle tissue requires interaction between the integrin, lymphocyte function-associated antigen-1 (LFA-1) on WBCs, and ICAM-1 on vascular endothelial cells. High levels of active LFA-1 are uniquely expressed on WBCs that are involved in autoimmune and inflammatory conditions. The natural biologic agent LtxA (Leukothera) preferentially targets and depletes disease activated and malignant WBCs by binding to active LFA-1. The experimental drug has demonstrated significant therapeutic efficacy against autoimmune/inflammatory conditions such as psoriasis and allergic asthma in mouse models for these diseases. In addition, when injected into rodents, rhesus macaques, and dogs, LtxA was demonstrated to be physiologically active, biologically specific, and extremely well-tolerated. LFA-1 is an attractive target for therapy because it is only normally present on WBCs and has been shown to be activated and overexpressed on WBCs that are responsible for autoimmune/inflammatory conditions.
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Affiliation(s)
- Scott C Kachlany
- Department of Oral Biology, Rutgers University School of Dental Medicine, Newark, New Jersey, USA.,Actinobac Biomed, Inc., Kendall Park, New Jersey, USA
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93
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Grabmaier U, Kania G, Kreiner J, Grabmeier J, Uhl A, Huber BC, Lackermair K, Herbach N, Todica A, Eriksson U, Weckbach LT, Brunner S. Soluble Vascular Cell Adhesion Molecule-1 (VCAM-1) as a Biomarker in the Mouse Model of Experimental Autoimmune Myocarditis (EAM). PLoS One 2016; 11:e0158299. [PMID: 27501319 PMCID: PMC4976901 DOI: 10.1371/journal.pone.0158299] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Accepted: 06/13/2016] [Indexed: 01/02/2023] Open
Abstract
Vascular cell adhesion molecule-1 (VCAM-1) is strongly upregulated in hearts of mice with coxsackie virus-induced as well as in patients with viral infection-triggered dilated cardiomyopathy. Nevertheless, the role of its soluble form as a biomarker in inflammatory heart diseases remains unclear. Therefore, we investigated whether plasma levels of soluble VCAM-1 (sVCAM-1) directly correlated with disease activity and progression of cardiac dysfunction in the mouse model of experimental autoimmune myocarditis (EAM). EAM was induced by immunization of BALB/c mice with heart-specific myosin-alpha heavy chain peptide together with complete Freund`s adjuvant. ELISA revealed strong expression of cardiac VCAM-1 (cVCAM-1) throughout the course of EAM in immunized mice compared to control animals. Furthermore, sVCAM-1 was elevated in the plasma of immunized compared to control mice at acute and chronic stages of the disease. sVCAM-1 did not correlate with the degree of acute cardiac inflammation analyzed by histology or cardiac cytokine expression investigated by ELISA. Nevertheless, heart to body weight ratio correlated significantly with sVCAM-1 at chronic stages of EAM. Cardiac systolic dysfunction studied with positron emission tomography indicated a weak relationship with sVCAM-1 at the chronic stage of the disease. Our data provide evidence that plasma levels of sVCAM-1 are elevated throughout all stages of the disease but showed no strong correlation with the severity of EAM.
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Affiliation(s)
- U. Grabmaier
- Medical Department I, Ludwig-Maximilians-University, Munich, Germany
- * E-mail:
| | - G. Kania
- Research of Systemic Autoimmune Diseases, Division of Rheumatology, University Hospital of Zurich, Zurich, Switzerland
| | - J. Kreiner
- Medical Department I, Ludwig-Maximilians-University, Munich, Germany
| | - J. Grabmeier
- Medical Department I, Ludwig-Maximilians-University, Munich, Germany
| | - A. Uhl
- Medical Department I, Ludwig-Maximilians-University, Munich, Germany
| | - B. C. Huber
- Medical Department I, Ludwig-Maximilians-University, Munich, Germany
| | - K. Lackermair
- Medical Department I, Ludwig-Maximilians-University, Munich, Germany
| | - N. Herbach
- Institute of Veterinary Pathology, Ludwig-Maximilians-University, Munich, Germany
| | - A. Todica
- Department of Nuclear Medicine, Ludwig-Maximilians-University, Munich, Germany
| | - U. Eriksson
- Cardioimmunology, Center of Molecular Cardiology, University of Zurich, Zurich, Switzerland
| | - L. T. Weckbach
- Medical Department I, Ludwig-Maximilians-University, Munich, Germany
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-University, Munich, Germany
| | - S. Brunner
- Medical Department I, Ludwig-Maximilians-University, Munich, Germany
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94
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Walker D, Li Y, Roxin Á, Schaffer P, Adam MJ, Perrin DM. Facile synthesis and 18F-radiolabeling of α 4β 1-specific LLP2A-aryltrifluoroborate peptidomimetic conjugates. Bioorg Med Chem Lett 2016; 26:5126-5131. [PMID: 27623550 DOI: 10.1016/j.bmcl.2016.08.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 08/04/2016] [Accepted: 08/05/2016] [Indexed: 12/11/2022]
Abstract
The peptidomimetic, LLP2A, is a specific, high-affinity ligand for α4β1 integrin receptors. Previously, several PEGylated LLP2A conjugates were evaluated in vivo as imaging agents for the detection of lymphoma, leukemia, multiple myeloma and melanoma tumours via NIR-fluorescence, 111In-SPECT, and 64Cu- and 68Ga-PET imaging. Despite these successes, to date there is no report of an 18F-labeled LLP2A conjugate. Notably, fluorine-18 is a preferred radionuclide for PET imaging, yet its short half-life and general inactivity under aqueous conditions present challenges for peptide labeling. A simple method for labeling complex biomolecules can be achieved with arylboronic acids that readily capture aqueous [18F]-fluoride ion resulting in an 18F-labeled aryltrifluoroborate ([18F]-ArBF3-) radioprosthetic group. Herein, we present the first radiosynthesis of an 18F-labeled LLP2A conjugate by both one-step 18F-labeling and one-pot two-step 18F-labeling post-'click' conjugation of the 18F-alkynyl-ArBF3- prosthetic. Competition with a fluorescent conjugate of LLP2A demonstrated specific binding of the non-radioactive isotopolog ArBF3--PEG2-LLP2A to α4β1 integrin-expressing MOLT-4 leukemia cells, as evidenced and confirmed by fluorescence microscopy. This work provides a key first step in the development of an expanding library of [18F]-R-BF3--LLP2A radiotracers for PET imaging.
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Affiliation(s)
- Daniel Walker
- Chemistry Department, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Ying Li
- Chemistry Department, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Áron Roxin
- Chemistry Department, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Paul Schaffer
- Triumf, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada
| | - Michael J Adam
- Triumf, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada
| | - David M Perrin
- Chemistry Department, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada.
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95
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LFA-1 integrin antibodies inhibit leukocyte α4β1-mediated adhesion by intracellular signaling. Blood 2016; 128:1270-81. [PMID: 27443292 DOI: 10.1182/blood-2016-03-705160] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Accepted: 07/12/2016] [Indexed: 02/03/2023] Open
Abstract
Binding of intercellular adhesion molecule-1 to the β2-integrin leukocyte function associated antigen-1 (LFA-1) is known to induce cross-talk to the α4β1 integrin. Using different LFA-1 monoclonal antibodies, we have been able to study the requirement and mechanism of action for the cross-talk in considerable detail. LFA-1-activating antibodies and those inhibitory antibodies that signal to α4β1 induce phosphorylation of Thr-758 on the β2-chain, which is followed by binding of 14-3-3 proteins and signaling through the G protein exchange factor Tiam1. This results in dephosphorylation of Thr-788/789 on the β1-chain of α4β1 and loss of binding to its ligand vascular cell adhesion molecule-1. The results show that with LFA-1 antibodies, we can activate LFA-1 and inhibit α4β1, inhibit both LFA-1 and α4β1, inhibit LFA-1 but not α4β1, or not affect LFA-1 or α4β1 These findings are important for the understanding of integrin regulation and for the interpretation of the effect of integrin antibodies and their use in clinical applications.
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96
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Mankame T, Hokanson R, Chowdhary R, Busbee D. Altered gene expression in human cells induced by the agricultural chemical Enable. Toxicol Ind Health 2016; 20:89-102. [PMID: 15942997 DOI: 10.1191/0748233704th198oa] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Steroid hormones bind to highly specific nuclear receptors, regulating gene expression that results in normal fetal growth and development and/or in normal adult physiological function. Many industrial and agricultural chemicals may bind one or more nuclear receptors, acting as mimics of steroid hormones, and are called endocrine disruptive chemicals (EDC) because they alter the expression of endocrine-regulated genes. A widely used fungicide, Enable (fenbuconazole), was evaluated to examine its capacity to alter endocrine-regulated gene expression. Cells of an oestrogen-dependent human breast cancer-derived line, MCF-7, were treated with a range, 0.033-3.3 ppb (ng/mL), of Enable, and gene expression was compared to that of untreated cells. Microarray analysis using a chip with 600 gene spots showed downregulation of eight genes and upregulation of 34 genes in cells treated with 3.3 ppb of Enable, compared to untreated cells. Specific genes were selected for consideration. Real-time PCR confirmed results obtained from analysis of the microarray data for the genes phenol sulphotransferase (PST), intercellular adhesion molecule-1 (ICAM-1), transforming growth factor b-3 (TGF b-3) and calreticulin. These studies were designed to provide base-line data on the gene expression-altering capacity of a specific chemical at a low dose, and will allow assessment of the possible deleterious effects that may be caused in human cells by exposure to the agricultural chemical Enable.
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Affiliation(s)
- T Mankame
- Department of Anatomy and Public Health, College of Veterinary Medicine, Texas A&M University, TX 77843, USA
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97
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Phenotyping of Leukocytes and Leukocyte-Derived Extracellular Vesicles. J Immunol Res 2016; 2016:6391264. [PMID: 27195303 PMCID: PMC4852366 DOI: 10.1155/2016/6391264] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 03/04/2016] [Accepted: 03/20/2016] [Indexed: 12/11/2022] Open
Abstract
Extracellular vesicles (EVs) have a demonstrated involvement in modulating the immune system. It has been proposed that EVs could be used as biomarkers for detection of inflammatory and immunological disorders. Consequently, it is of great interest to investigate EVs in more detail with focus on immunological markers. In this study, five major leukocyte subpopulations and the corresponding leukocyte-derived EVs were phenotyped with focus on selected immunological lineage-specific markers and selected vesicle-related markers. The leukocyte-derived EVs displayed phenotypic differences in the 34 markers investigated. The majority of the lineage-specific markers used for identification of the parent cell types could not be detected on EVs released from monocultures of the associated cell types. In contrast, the vesicular presentation of CD9, CD63, and CD81 correlated to the cell surface expression of these markers, however, with few exceptions. Furthermore, the cellular expression of CD9, CD63, and CD81 varied between leukocytes present in whole blood and cultured leukocytes. In summary, these data demonstrate that the cellular and vesicular presentation of selected lineage-specific and vesicle-related markers may differ, supporting the accumulating observations that sorting of molecular cargo into EVs is tightly controlled.
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98
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Cellular signaling in sinecatechins-treated external genital and perianal warts: unraveling the mechanism of action of a botanical therapy. Virol Sin 2016; 30:214-7. [PMID: 25822119 DOI: 10.1007/s12250-014-3520-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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99
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Sackstein R. Fulfilling Koch's postulates in glycoscience: HCELL, GPS and translational glycobiology. Glycobiology 2016; 26:560-70. [PMID: 26933169 DOI: 10.1093/glycob/cww026] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 02/23/2016] [Indexed: 12/16/2022] Open
Abstract
Glycoscience-based research that is performed expressly to address medical necessity and improve patient outcomes is called "translational glycobiology". In the 19th century, Robert Koch proposed a set of postulates to rigorously establish causality in microbial pathogenesis, and these postulates can be reshaped to guide knowledge into how naturally-expressed glycoconjugates direct molecular processes critical to human well-being. Studies in the 1990s indicated that E-selectin, an endothelial lectin that binds sialofucosylated carbohydrate determinants, is constitutively expressed on marrow microvessels, and investigations in my laboratory indicated that human hematopoietic stem cells (HSCs) uniquely express high levels of a specialized glycoform of CD44 called "hematopoietic cell E-/L-selectin ligand" (HCELL) that functions as a highly potent E-selectin ligand. To assess the role of HCELL in directing HSC migration to marrow, a method called "glycosyltransferase-programmed stereosubstitution" (GPS) was developed to custom-modify CD44 glycans to enforce HCELL expression on viable cell surfaces. Human mesenchymal stem cells (MSCs) are devoid of E-selectin ligands, but GPS-based glycoengineering of CD44 on MSCs licenses homing of these cells to marrow in vivo, providing direct evidence that HCELL serves as a "bone marrow homing receptor". This review will discuss the molecular basis of cell migration in historical context, will describe the discovery of HCELL and its function as the bone marrow homing receptor, and will inform on how glycoengineering of CD44 serves as a model for adapting Koch's postulates to elucidate the key roles that glycoconjugates play in human biology and for realizing the immense impact of translational glycobiology in clinical medicine.
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Affiliation(s)
- Robert Sackstein
- Department of Dermatology and Department of Medicine, Brigham & Women's Hospital, Boston, MA, USA Harvard Skin Disease Research Center Program of Excellence in Glycosciences, Harvard Medical School, 77 Avenue Louis Pasteur, Room 671, Boston, MA 02115, USA
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100
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Abstract
Antigen-experienced T cells, also known as memory T cells, are functionally and phenotypically distinct from naive T cells. Their enhanced expression of adhesion molecules and reduced requirement for co-stimulation enables them to mount potent and rapid recall responses to subsequent antigen encounters. Memory T cells generated in response to prior antigen exposures can cross-react with other nonidentical, but similar, antigens. This heterologous cross-reactivity not only enhances protective immune responses, but also engenders de novo alloimmunity. This latter characteristic is increasingly recognized as a potential barrier to allograft acceptance that is worthy of immunotherapeutic intervention, and several approaches have been investigated. Calcineurin inhibition effectively controls memory T-cell responses to allografts, but this benefit comes at the expense of increased infectious morbidity. Lymphocyte depletion eliminates allospecific T cells but spares memory T cells to some extent, such that patients do not completely lose protective immunity. Co-stimulation blockade is associated with reduced adverse-effect profiles and improved graft function relative to calcineurin inhibition, but lacks efficacy in controlling memory T-cell responses. Targeting the adhesion molecules that are upregulated on memory T cells might offer additional means to control co-stimulation-blockade-resistant memory T-cell responses.
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