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Luo J, Wang H, Chen J, Wei X, Feng J, Zhang Y, Zhou Y. The Application of Drugs and Nano-Therapies Targeting Immune Cells in Hypoxic Inflammation. Int J Nanomedicine 2024; 19:3441-3459. [PMID: 38617798 PMCID: PMC11015843 DOI: 10.2147/ijn.s456533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 03/29/2024] [Indexed: 04/16/2024] Open
Abstract
Immune cells are pivotal in the dynamic interplay between hypoxia and inflammation. During hypoxic conditions, HIF-1α, a crucial transcription factor, facilitates the adaptation of immune cells to the hypoxic micro-environment. This adaptation includes regulating immune cell metabolism, significantly impacting inflammation development. Strategies for anti-inflammatory and hypoxic relief have been proposed, aiming to disrupt the hypoxia-inflammation nexus. Research extensively focuses on anti-inflammatory agents and materials that target immune cells. These primarily mitigate hypoxic inflammation by encouraging M2-macrophage polarization, restraining neutrophil proliferation and infiltration, and maintaining Treg/TH17 balance. Additionally, oxygen-releasing nano-materials play a significant role. By alleviating hypoxia and clearing reactive oxygen species (ROS), these nano-materials indirectly influence immune cell functions. This paper delves into the response of immune cells under hypoxic conditions and the resultant effects on inflammation. It provides a comprehensive overview of various therapies targeting specific immune cells for anti-inflammatory purposes and explores nano-materials that either carry or generate oxygen to alleviate anoxic micro-environments.
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Affiliation(s)
- Jiaxin Luo
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, 130021, People’s Republic of China
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun, 130021, People’s Republic of China
| | - Hanchi Wang
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, 130021, People’s Republic of China
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun, 130021, People’s Republic of China
| | - Jingxia Chen
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, 130021, People’s Republic of China
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun, 130021, People’s Republic of China
| | - Xuyan Wei
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, 130021, People’s Republic of China
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun, 130021, People’s Republic of China
| | - Jian Feng
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, 130021, People’s Republic of China
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun, 130021, People’s Republic of China
| | - Yidi Zhang
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, 130021, People’s Republic of China
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun, 130021, People’s Republic of China
| | - Yanmin Zhou
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, 130021, People’s Republic of China
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun, 130021, People’s Republic of China
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Shanmuganathan S, Angayarkanni N. Chebulagic acid Chebulinic acid and Gallic acid, the active principles of Triphala, inhibit TNFα induced pro-angiogenic and pro-inflammatory activities in retinal capillary endothelial cells by inhibiting p38, ERK and NFkB phosphorylation. Vascul Pharmacol 2018; 108:23-35. [DOI: 10.1016/j.vph.2018.04.005] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2018] [Revised: 04/05/2018] [Accepted: 04/15/2018] [Indexed: 12/15/2022]
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Dos Santos DC, Saraiva Camara NO, David DSR, Malheiros DMAC. Expression patterns of CD56+ and CD16+ cells in renal transplant biopsies with acute rejection: Associations with microcirculation injuries and graft survival. Nephrology (Carlton) 2018; 22:993-1001. [PMID: 27538059 DOI: 10.1111/nep.12897] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 08/16/2016] [Accepted: 08/16/2016] [Indexed: 02/01/2023]
Abstract
BACKGROUND The study investigated whether immunohistochemical features of interstitial and glomerular CD56 and CD16 infiltrates - NK cells markers - could be associated with microcirculation injury scores - peritubular capillaritis (ptc) and glomerulitis (g) - and graft survival. METHODS The research analyzed the immunohistochemical pattern of CD56 and CD16 in interstitial and glomerular compartments of biopsies for-cause biopsies from 59 recipients diagnosed with acute rejection (mean = 135.5 days post-transplant). RESULTS Interstitial CD56+ cells had an increased expression for glomerulitis (g ≥ 1) (P = 0.02) and peritubular capillaritis (ptc ≥ 2) (P = 0.003) presence. It was noted that interstitial CD56 + cells with mean above 0.56 cells/mm2 had worse allograft survival. CD56+ cells in the interstitial compartment with mean less than or equal to 0.56cells/mm2 was related with absence or mild peritubular capillaritis (P = 0.012) and mean above 0.56 cells/mm2 , respectively, with glomerulitis (P = 0.002) presence. Interstitial CD16 cells showed greater positive results in relation to peritubular capillaritis (P = 0.0001) cases. Similarly, it was observed that glomerular CD16+ cells had higher positive results in glomerulitis (P = 0.009) presence. CONCLUSIONS The study findings showed that CD56+ cell infiltrated in the interstitial compartment was significantly associated with microcirculation injury scores, especially the glomerulitis, and graft survival.
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Affiliation(s)
- Daniela Cristina Dos Santos
- Department of Pathology, College of Medicine, São Paulo State University, Botucatu, São Paulo, Brazil.,Department of Pathology, College of Medicine, University of São Paulo, Brazil
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Zhang Y, Zhao C, Wei Y, Yang S, Cui C, Yang J, Zhang J, Qiao R. Increased circulating microparticles in women with preeclampsia. Int J Lab Hematol 2018. [PMID: 29520961 DOI: 10.1111/ijlh.12796] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
INTRODUCTION Preeclampsia (PE) is associated with hypercoagulability, endothelial dysfunction and inflammation, which generate microparticles (MPs). Therefore, MPs may be important for PE. METHODS We established a verified MP measurement procedure to detect MPs in nonpregnant women (n = 25), healthy pregnant women (n = 29) and PE women (n = 73) and compared their MP levels. RESULTS Microparticles prepared from platelets (PMPs), endothelial cells (EMPs) and leucocytes (LMPs) were confirmed by transmission electron microscopy and were analysed by our established flow cytofluorimetric approach, which showed good specificity for determining the cell origin and level of MPs. The levels of total MPs (tMPs) and PMPs in the healthy pregnant group were significantly higher than those in the nonpregnant group (158.78 vs 93.00 and 45.04 vs 17.41, P = .004 and P = .007, respectively) but were not significantly different from those of the PE group. However, EMPs and LMPs were significantly higher in the PE group than in the healthy pregnant group (14.62 vs 11.48 and 8.94 vs 5.03, P = .015 and P < .001, respectively). Furthermore, the area under the receiver operating characteristic curves (AUC) for EMPs, LMPs and the combined sum of EMPs and LMPs were 0.661, 0.746 and 0.718, respectively (P < . 05); at their optimal cut-off values, the sensitivities were 50.68%, 87.67% and 46.58%, respectively, and the specificities were 80.77%, 58.33% and 95.65%, respectively. CONCLUSION Determining the MP level, especially that of EMPs and LMPs, by a specificity-verified method may reflect the endothelial dysfunction and inflammation involved in PE pathogenesis.
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Affiliation(s)
- Y Zhang
- The Department of Laboratory Medicine, Peking University Third Hospital, Haidian, Beijing, China
| | - C Zhao
- The Department of Obstetrics and Gynecology, Peking University Third Hospital, Haidian, Beijing, China
| | - Y Wei
- The Department of Obstetrics and Gynecology, Peking University Third Hospital, Haidian, Beijing, China
| | - S Yang
- The Department of Laboratory Medicine, Peking University Third Hospital, Haidian, Beijing, China
| | - C Cui
- The Department of Laboratory Medicine, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - J Yang
- The Department of Obstetrics and Gynecology, Peking University Third Hospital, Haidian, Beijing, China
| | - J Zhang
- The Department of Laboratory Medicine, Peking University Third Hospital, Haidian, Beijing, China
| | - R Qiao
- The Department of Laboratory Medicine, Peking University Third Hospital, Haidian, Beijing, China
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Abstract
Preeclampsia is a hypertensive pregnancy disorder characterized by development of hypertension and proteinuria after 20 weeks of gestation that remains a leading cause of maternal and neonatal morbidity and mortality. While preeclampsia is believed to result from complex interactions between maternal and placental factors, the proximate pathophysiology of this syndrome remains elusive. Cell-to-cell communication is a critical signaling mechanism for feto-placental development in normal pregnancies. One mechanism of cellular communication relates to activated cell-derived sealed membrane vesicles called extracellular vesicles (EVs). The concentrations and contents of EVs in biological fluids depend upon their cells of origin and the stimuli which trigger their production. Research on EVs in preeclampsia has focused on EVs derived from the maternal vasculature (endothelium, vascular smooth muscle) and blood (erythrocytes, leukocytes, and platelets), as well as placental syncytiotrophoblasts. Changes in the concentrations and contents of these EVs may contribute to the pathophysiology of preeclampsia by accentuating the pro-inflammatory and pro-coagulatory states of pregnancy. This review focuses on possible interactions among placental- and maternal-derived EVs and their contents in the initiation and progression of the pathogenesis of preeclampsia. Understanding the contributions of EVs in the pathogenesis of preeclampsia may facilitate their use as diagnostic and prognostic biomarkers.
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Affiliation(s)
- Sarwat I. Gilani
- Department of Internal Medicine, Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN 55905 USA
- Department of Surgery, Mayo Clinic, 200 First Street SW, Rochester, MN 55905 USA
| | - Tracey L. Weissgerber
- Department of Internal Medicine, Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN 55905 USA
| | - Vesna D. Garovic
- Department of Internal Medicine, Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN 55905 USA
| | - Muthuvel Jayachandran
- Department of Surgery, Mayo Clinic, 200 First Street SW, Rochester, MN 55905 USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905 USA
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Pessina A, Leonetti C, Artuso S, Benetti A, Dessy E, Pascucci L, Passeri D, Orlandi A, Berenzi A, Bonomi A, Coccè V, Ceserani V, Ferri A, Dossena M, Mazzuca P, Ciusani E, Ceccarelli P, Caruso A, Portolani N, Sisto F, Parati E, Alessandri G. Drug-releasing mesenchymal cells strongly suppress B16 lung metastasis in a syngeneic murine model. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2015; 34:82. [PMID: 26264809 PMCID: PMC4534150 DOI: 10.1186/s13046-015-0200-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Accepted: 08/04/2015] [Indexed: 12/21/2022]
Abstract
BACKGROUND Mesenchymal stromal cells (MSCs) are considered an important therapeutic tool in cancer therapy. They possess intrinsic therapeutic potential and can also be in vitro manipulated and engineered to produce therapeutic molecules that can be delivered to the site of diseases, through their capacity to home pathological tissues. We have recently demonstrated that MSCs, upon in vitro priming with anti-cancer drug, become drug-releasing mesenchymal cells (Dr-MCs) able to strongly inhibit cancer cells growth. METHODS Murine mesenchymal stromal cells were loaded with Paclitaxel (Dr-MCsPTX) according to a standardized procedure and their ability to inhibit the growth of a murine B16 melanoma was verified by in vitro assays. The anti-metastatic activity of Dr-MCsPTX was then studied in mice injected i.v. with B16 melanoma cells that produced lung metastatic nodules. Lung nodules were counted under a dissecting stereomicroscope and metastasis investigated by histological analysis. RESULTS We found that three i.v. injections of Dr-MCsPTX on day 5, 10 and 15 after tumor injection almost completely abolished B16 lung metastasis. Dr-MCsPTX arrested into lung by interacting with endothelium and migrate toward cancer nodule through a complex mechanism involving primarily mouse lung stromal cells (mL-StCs) and SDF-1/CXCR4/CXCR7 axis. CONCLUSIONS Our results show for the first time that Dr-MCsPTX are very effective to inhibit lung metastasis formation. Actually, a cure for lung metastasis in humans is mostly unlikely and we do not know whether a therapy combining engineered MSCs and Dr-MCs may work synergistically. However, we think that our approach using Dr-MCs loaded with PTX may represent a new valid and additive therapeutic tool to fight lung metastases and, perhaps, primary lung cancers in human.
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Affiliation(s)
- Augusto Pessina
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Via Pascal 36, Milan, 20133, Italy.
| | - Carlo Leonetti
- Experimental Chemotherapy Laboratory, Regina Elena National Cancer Institute, Rome, Italy
| | - Simona Artuso
- Experimental Chemotherapy Laboratory, Regina Elena National Cancer Institute, Rome, Italy
| | - Anna Benetti
- Department of Clinical and Experimental Sciences, Institute of Pathological Anatomy, University of Brescia, Brescia, Italy
| | - Enrico Dessy
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Luisa Pascucci
- Department of Veterinary Medicine, University of Perugia, Perugia, Italy
| | - Daniela Passeri
- Department of Biopathology and Image Diagnostics, Anatomic Pathology Institute, University of Rome 'Tor Vergata', Rome, Italy
| | - Augusto Orlandi
- Department of Biopathology and Image Diagnostics, Anatomic Pathology Institute, University of Rome 'Tor Vergata', Rome, Italy
| | - Angiola Berenzi
- Department of Clinical and Experimental Sciences, Institute of Pathological Anatomy, University of Brescia, Brescia, Italy
| | - Arianna Bonomi
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Via Pascal 36, Milan, 20133, Italy
| | - Valentina Coccè
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Via Pascal 36, Milan, 20133, Italy
| | - Valentina Ceserani
- Cellular Neurobiology Laboratory, Department of Cerebrovascular Diseases, IRCCS Neurological Institute C. Besta, Milan, Italy
| | - Anna Ferri
- Cellular Neurobiology Laboratory, Department of Cerebrovascular Diseases, IRCCS Neurological Institute C. Besta, Milan, Italy
| | - Marta Dossena
- Cellular Neurobiology Laboratory, Department of Cerebrovascular Diseases, IRCCS Neurological Institute C. Besta, Milan, Italy
| | - Pietro Mazzuca
- Department of Microbiology, Brescia University, Brescia, Italy
| | - Emilio Ciusani
- Laboratory of Clinical Pathology and Neurogenetic Medicine, Fondazione IRCCS Neurological Institute Carlo Besta, Milan, Italy
| | - Piero Ceccarelli
- Department of Veterinary Medicine, University of Perugia, Perugia, Italy
| | - Arnaldo Caruso
- Department of Microbiology, Brescia University, Brescia, Italy
| | - Nazario Portolani
- Department of Medical and Surgical Sciences, University of Brescia, Brescia, Italy
| | - Francesca Sisto
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Via Pascal 36, Milan, 20133, Italy
| | - Eugenio Parati
- Cellular Neurobiology Laboratory, Department of Cerebrovascular Diseases, IRCCS Neurological Institute C. Besta, Milan, Italy
| | - Giulio Alessandri
- Cellular Neurobiology Laboratory, Department of Cerebrovascular Diseases, IRCCS Neurological Institute C. Besta, Milan, Italy
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Natural Killer Cells Play a Critical Role in Cardiac Allograft Vasculopathy in an Interleukin-6–Dependent Manner. Transplantation 2014; 98:1029-39. [DOI: 10.1097/tp.0000000000000405] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Tognarelli S, Gayet J, Lambert M, Dupuy S, Karras A, Cohen P, Guillevin L, de Menthon M, Caillat-Zucman S. Tissue-specific microvascular endothelial cells show distinct capacity to activate NK cells: implications for the pathophysiology of granulomatosis with polyangiitis. THE JOURNAL OF IMMUNOLOGY 2014; 192:3399-408. [PMID: 24600034 DOI: 10.4049/jimmunol.1301508] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The relevance of tissue specificity of microvascular endothelial cells (MECs) in the response to inflammatory stimuli and sensitivity to immune cell-mediated injury is not well defined. We hypothesized that such MEC characteristics might shape their interaction with NK cells through the use of different adhesion molecules and NK cell receptor ligands or the release of different soluble factors and render them more or less vulnerable to NK cell injury during autoimmune vasculitis, such as granulomatosis with polyangiitis (GPA). To generate a comprehensive expression profile of human MECs of renal, lung, and dermal tissue origin, we characterized, in detail, their response to inflammatory cytokines and to proteinase 3, a major autoantigen in GPA, and analyzed the effects on NK cell activation. In this study, we show that renal MECs were more susceptible than lung and dermal MECs to the effect of inflammatory signals, showing upregulation of ICAM-1 and VCAM-1 on their surface, as well as release of CCL2, soluble fractalkine, and soluble VCAM-1. Proteinase 3-stimulated renal and lung MECs triggered CD107a degranulation in control NK cell. Notably, NK cells from GPA patients expressed markers of recent in vivo activation (CD69, CD107a), degranulated more efficiently than did control NK cells in the presence of renal MECs, and induced direct killing of renal MECs in vitro. These results suggest that, upon inflammatory conditions in GPA, renal MECs may contribute to the recruitment and activation of NK cells in the target vessel wall, which may participate in the necrotizing vasculitis of the kidney during this disease.
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Affiliation(s)
- Sara Tognarelli
- INSERM, U1016 Hôpital Saint-Vincent de Paul, 75014 Paris, France
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Zhang X, Valenzuela NM, Reed EF. HLA class I antibody-mediated endothelial and smooth muscle cell activation. Curr Opin Organ Transplant 2012; 17:446-51. [PMID: 22710387 PMCID: PMC3880156 DOI: 10.1097/mot.0b013e328355f1c2] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
PURPOSE OF REVIEW Advances in immunosuppression and patient management have successfully improved 1-year transplant outcome. Unfortunately, antibody-mediated rejection is a major barrier to long-term graft survival. This study summarizes the effects of antibodies on endothelial cell and smooth muscle cell (SMC) migration, proliferation and leukocyte recruitment, emphasizing the intracellular signaling pathways that orchestrate these distinct functional outcomes. RECENT FINDINGS Several studies have provided further insight into the effects of human leukocyte antigen (HLA) class I antibodies on vascular cells. We found that HLA I molecules partner with integrin β4 to transduce proliferative signaling, and identified proteins that associate with the cytoskeleton after HLA class I crosslinking. Natural killer cells have been strongly implicated in a murine model of donor-specific major histocompatibility complex I antibody-triggered neointimal thickening. A recently developed human arterial graft model revealed the role of matrix metalloproteinases in SMC mitogenesis by HLA class I antibodies. Using a donor transgenic for HLA-A2, Fukami et al. investigated the mechanisms of accommodation induced by low titers of HLA class I antibodies. SUMMARY Ligation of HLA class I molecules with antibodies leads to the activation of intracellular signals in endothelial cells and SMCs, which in turn promote actin cytoskeletal remodeling, survival, proliferation, and recruitment of leukocytes.
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Affiliation(s)
- Xiaohai Zhang
- Department of Pathology, UCLA Immunogenetics Center, David Geffen School of Medicine, University of California, Los Angeles, California 90095, USA
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Buschmann J, Meier-Bürgisser G, Bonavoglia E, Neuenschwander P, Milleret V, Giovanoli P, Calcagni M. Cellular response of healing tissue to DegraPol tube implantation in rabbit Achilles tendon rupture repair: anin vivohistomorphometric study. J Tissue Eng Regen Med 2012; 7:413-20. [DOI: 10.1002/term.538] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2011] [Revised: 09/01/2011] [Accepted: 11/03/2011] [Indexed: 11/07/2022]
Affiliation(s)
- Johanna Buschmann
- Division of Plastic and Reconstructive Surgery; University Hospital Zurich; Switzerland
| | | | | | | | - Vincent Milleret
- Department of Materials, Cells and Biomaterials; ETH Zurich; Switzerland
| | - Pietro Giovanoli
- Division of Plastic and Reconstructive Surgery; University Hospital Zurich; Switzerland
| | - Maurizio Calcagni
- Division of Plastic and Reconstructive Surgery; University Hospital Zurich; Switzerland
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Lin D, Lavender H, Soilleux EJ, O'Callaghan CA. NF-κB regulates MICA gene transcription in endothelial cell through a genetically inhibitable control site. J Biol Chem 2011; 287:4299-310. [PMID: 22170063 DOI: 10.1074/jbc.m111.282152] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Endothelial cells form a barrier between blood and the underlying vessel wall, which characteristically demonstrates inflammatory damage in atherosclerotic disease. MICA is a highly polymorphic ligand for the activating immune receptor NKG2D and can be expressed on endothelial cells. We hypothesized that damaged vessel walls, such as those involved in atherosclerosis, might express MICA, which could contribute to the vascular immunopathology. Immune activation resulting from MICA expression could play a significant role in the development of vascular damage. We have demonstrated that TNFα up-regulates MICA on human endothelial cells. The up-regulation is mediated by NF-κB, and we have defined the regulatory control site responsible for this at -130 bp upstream of the MICA transcription start site. This site overlaps with a heat shock response element and integrates input from the two pathways. We have shown that in atherosclerotic lesions there is expression of MICA on endothelial cells. Using lentivirus-mediated gene delivery in primary human endothelial cells, we were able to inhibit the MICA response to TNFα with a truncated HSF1 that lacked a transactivation domain. This highlights the potential for transcription-based therapeutic approaches in atherosclerotic vascular disease to reduce immune-mediated endothelial and vessel wall damage.
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Affiliation(s)
- Da Lin
- Henry Wellcome Building for Molecular Physiology, University of Oxford, Roosevelt Drive, Oxford OX3 7BN, United Kingdom
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Himadri P, Kumari SS, Chitharanjan M, Dhananjay S. Role of Oxidative Stress and Inflammation in Hypoxia-Induced Cerebral Edema: A Molecular Approach. High Alt Med Biol 2010; 11:231-44. [DOI: 10.1089/ham.2009.1057] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- P. Himadri
- Department of Experimental Biology, Defence Institute of Physiology and Allied Sciences, Delhi, India
| | - Sarada S. Kumari
- Department of Experimental Biology, Defence Institute of Physiology and Allied Sciences, Delhi, India
| | - M. Chitharanjan
- Department of Experimental Biology, Defence Institute of Physiology and Allied Sciences, Delhi, India
| | - S. Dhananjay
- Department of Experimental Biology, Defence Institute of Physiology and Allied Sciences, Delhi, India
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Host-microbe interactions and defense mechanisms in the development of amoebic liver abscesses. Clin Microbiol Rev 2009; 22:65-75, Table of Contents. [PMID: 19136434 DOI: 10.1128/cmr.00029-08] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
SUMMARY Amoebiasis by Entamoeba histolytica is a major public health problem in developing countries and leads to several thousand deaths per year. The parasite invades the intestine (provoking diarrhea and dysentery) and the liver, where it forms abscesses (amoebic liver abscesses [ALAs]). The liver is the organ responsible for filtering blood coming from the intestinal tract, a task that implies a particular structure and immune features. Amoebae use the portal route and break through the sinusoidal endothelial barrier to reach the hepatic parenchyma. When faced with systemic and cell-mediated defenses, trophozoites adapt to their new environment and modulate host responses, leading to parasite survival and the formation of inflammatory foci. Cytopathogenic effects and the onset of inflammation may be caused by diffusible products originating from parasites and/or immune cells either by their secretion or by their release after cell death. Liver infection thus results from the interplay between E. histolytica and hepatic cells. Despite its importance in terms of public health burden, the lack of integrated data on ALA genesis means that we have only an incomplete description of the initiation and development of hepatic amoebiasis. Here, we review the main steps of ALA development as well as the responses triggered in both the host and the parasite. Transcriptome studies highlighted parasite factors involved in adherence to human cells, cytopathogenic effects, and adaptative and stress responses. An understanding of their role in ALA development will help to unravel the host-pathogen interactions and their evolution throughout the infection.
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Roles of cyclooxygenase-2 in microvascular endothelial cell proliferation induced by basic fibroblast growth factor. Chin Med J (Engl) 2008. [DOI: 10.1097/00029330-200812020-00023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Lilienfeld BG, Schildknecht A, Imbach LL, Mueller NJ, Schneider MKJ, Seebach JD. Characterization of porcine UL16-binding protein 1 endothelial cell surface expression. Xenotransplantation 2008; 15:136-44. [PMID: 18447887 DOI: 10.1111/j.1399-3089.2008.00453.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Natural killer (NK) cells participate in the immune response against solid organ allo- and xenografts and are tightly regulated through signals mediated by inhibiting and activating receptors expressed on their cell surface. Human NK cytotoxicity against porcine endothelial cells (pEC) is mediated by the interaction of the activating human NK receptor hNKG2D and its corresponding ligand on pEC, porcine UL-16 binding protein 1 (pULBP1). The aim of the present study was to characterize the regulation of pULBP1 cell-surface expression on primary porcine aortic endothelial cells (PAEC). METHODS A monoclonal antibody (mAb; aE5-63) directed against pULBP1 was generated by immunizing C57BL/6 mice with the pEC line PEDSV.15, and used in cellular ELISA to determine pULBP1 cell surface expression. PAEC were either left untreated or stimulated with human or porcine cytokines [interferon gamma (IFN-gamma), tumor necrosis factor alpha (TNF-alpha)], human serum, cultured under hypoxic conditions, or infected with human or porcine cytomegalovirus (CMV). RESULTS Neither human nor porcine IFN-gamma stimulation changed pULBP1 expression, whereas both human and porcine TNF-alpha stimulation as well as human and porcine CMV infection significantly decreased pULBP1 expression on PAEC. Coculture of PAEC with human serum strongly increased pULBP1 expression depending on the binding of human anti-pig antibodies. Exposure of PAEC to hypoxia only slightly increased pULBP1 expression. CONCLUSIONS In conclusion, (i) the novel anti-pULBP1 IgM mAb aE5-63 represents a useful tool to study pULBP1/hNKG2D-mediated responses in xenotransplantation, and (ii) the expression of pULBP1, a human-pig cross-species functional hNKG2D ligand, on the surface of PAEC is modulated by various stimuli associated with transplantation.
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Affiliation(s)
- Benjamin G Lilienfeld
- Department of Internal Medicine, Laboratory for Transplantation Immunology, University Hospital Zurich, Zurich, Switzerland
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Agrawal S, Tripathi P, Naik S. Roles and mechanism of natural killer cells in clinical and experimental transplantation. Expert Rev Clin Immunol 2008; 4:79-91. [DOI: 10.1586/1744666x.4.1.79] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
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