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Maugeri N, De Lorenzo R, Mazza MG, Palladini M, Ciceri F, Rovere-Querini P, Manfredi AA, Benedetti F. Preferential and sustained platelet activation in COVID-19 survivors with mental disorders. Sci Rep 2024; 14:16119. [PMID: 38997256 PMCID: PMC11245597 DOI: 10.1038/s41598-024-64094-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 06/05/2024] [Indexed: 07/14/2024] Open
Abstract
Pre-existing mental disorders are considered a risk factor for severe COVID-19 outcomes, possibly because of higher vascular burden. Moreover, an unconventional platelet activation characterizes COVID-19 and contributes to inflammatory and thrombotic manifestations. In the light of the inflammation theory of mental disorders, we hypothesized that patients with mental disorders could be sensitive to the SARS-CoV-2 elicited platelet activation. We investigated platelet activation in 141 COVID-19 survivors at one month after clearance of the virus, comparing subjects with or without an established pre-existing diagnosis of mental disorder according to the DSM-5. We found that platelets from patients with a positive history of psychiatric disorder underwent unconventional activation more frequently than conventional activation or no activation at all. Such preferential activation was not detected when platelets from patients without a previous psychiatric diagnosis were studied. When testing the effects of age, sex, and psychiatric history on the platelet activation, GLZM multivariate analysis confirmed the significant effect of diagnosis only. These findings suggest a preferential platelet activation during acute COVID-19 in patients with a pre-existing psychiatric disorder, mediated by mechanisms associated with thromboinflammation. This event could have contributed to the higher risk of severe outcome in the psychiatric population.
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Affiliation(s)
- Norma Maugeri
- Vita-Salute San Raffaele University, Milan, Italy.
- Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Via Olgettina 58, 20132, Milan, Italy.
| | - Rebecca De Lorenzo
- Vita-Salute San Raffaele University, Milan, Italy
- Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Via Olgettina 58, 20132, Milan, Italy
| | - Mario Gennaro Mazza
- Vita-Salute San Raffaele University, Milan, Italy
- Psychiatry & Clinical Psychobiology, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Mariagrazia Palladini
- Vita-Salute San Raffaele University, Milan, Italy
- Psychiatry & Clinical Psychobiology, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Fabio Ciceri
- Vita-Salute San Raffaele University, Milan, Italy
- Hematology and Bone Marrow Transplant Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Patrizia Rovere-Querini
- Vita-Salute San Raffaele University, Milan, Italy
- Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Via Olgettina 58, 20132, Milan, Italy
| | - Angelo A Manfredi
- Vita-Salute San Raffaele University, Milan, Italy
- Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Via Olgettina 58, 20132, Milan, Italy
| | - Francesco Benedetti
- Vita-Salute San Raffaele University, Milan, Italy
- Psychiatry & Clinical Psychobiology, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
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2
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Kalinina A, Grigorieva E, Smirnova A, Kazansky D, Khromykh L. Pharmacokinetic Parameters of Recombinant Human Cyclophilin A in Mice. Eur J Drug Metab Pharmacokinet 2024; 49:57-69. [PMID: 38040985 DOI: 10.1007/s13318-023-00871-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/15/2023] [Indexed: 12/03/2023]
Abstract
BACKGROUND AND OBJECTIVE Cyclophilin A (CypA) is an isomerase that functions as a chaperone, housekeeping protein, and cyclosporine A (CsA) ligand. Secreted CypA is a proinflammatory factor, chemoattractant, immune regulator, and factor of antitumor immunity. Experimental data suggest clinical applications of recombinant human CypA (rhCypA) as a biotherapeutic for cancer immunotherapy, stimulation of tissue regeneration, treatment of brain pathologies, and as a supportive treatment for CsA-based therapies. The objective of this study is to analyze the pharmacokinetics of rhCypA in a mouse model. METHODS rhCypA was isotope-labeled with 125I and injected intraperitoneally (i.p.) or subcutaneously (s/c) into female mice as a single dose of 100 μg per mouse, equivalent to the estimated first-in-human dose. Analysis of 125I-rhCypA biodistribution and excretion was performed by direct radiometry of the blood, viscera, and urine of mice 0.5-72 h following its administration. RESULTS rhCypA showed rapid and even tissue-organ distribution, with the highest tropism (fT = 1.56) and accumulation (maximum concentration, Cmax = 137-167 μg/g) in the kidneys, its primary excretory organ. rhCypA showed the lowest tropism to the bone marrow and the brain (fT = 0.07) but the longest retention in these organs [mean retention time (MRT) = 25-28 h]. CONCLUSION This study identified promising target organs for rhCypA's potential therapeutic effects. The mode of rhCypA accumulation and retention in organs could be primarily due to the expression of its receptors in them. For the first time, rhCypA was shown to cross the blood-brain barrier and accumulate in the brain. These rhCypA pharmacokinetic data could be extrapolated to humans as preliminary data for possible clinical trials.
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Affiliation(s)
- Anastasiia Kalinina
- Federal State Budgetary Institution "N.N. Blokhin National Medical Research Center of Oncology" of the Ministry of Health of the Russian Federation, Kashirskoe sh. 24, 115478, Moscow, Russian Federation
| | - Elena Grigorieva
- Federal State Budgetary Institution "N.N. Blokhin National Medical Research Center of Oncology" of the Ministry of Health of the Russian Federation, Kashirskoe sh. 24, 115478, Moscow, Russian Federation
| | - Anna Smirnova
- Federal State Budgetary Institution "N.N. Blokhin National Medical Research Center of Oncology" of the Ministry of Health of the Russian Federation, Kashirskoe sh. 24, 115478, Moscow, Russian Federation
| | - Dmitry Kazansky
- Federal State Budgetary Institution "N.N. Blokhin National Medical Research Center of Oncology" of the Ministry of Health of the Russian Federation, Kashirskoe sh. 24, 115478, Moscow, Russian Federation
| | - Ludmila Khromykh
- Federal State Budgetary Institution "N.N. Blokhin National Medical Research Center of Oncology" of the Ministry of Health of the Russian Federation, Kashirskoe sh. 24, 115478, Moscow, Russian Federation.
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3
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Tang OY, Binder ZA, O'Rourke DM, Bagley SJ. Optimizing CAR-T Therapy for Glioblastoma. Mol Diagn Ther 2023; 27:643-660. [PMID: 37700186 DOI: 10.1007/s40291-023-00671-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/14/2023] [Indexed: 09/14/2023]
Abstract
Chimeric antigen receptor T-cell therapies have transformed the management of hematologic malignancies but have not yet demonstrated consistent efficacy in solid tumors. Glioblastoma is the most common primary malignant brain tumor in adults and remains a major unmet medical need. Attempts at harnessing the potential of chimeric antigen receptor T-cell therapy for glioblastoma have resulted in glimpses of promise but have been met with substantial challenges. In this focused review, we discuss current and future strategies being developed to optimize chimeric antigen receptor T cells for efficacy in patients with glioblastoma, including the identification and characterization of new target antigens, reversal of T-cell dysfunction with novel chimeric antigen receptor constructs, regulatable platforms, and gene knockout strategies, and the use of combination therapies to overcome the immune-hostile microenvironment.
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Affiliation(s)
- Oliver Y Tang
- Warren Alpert Medical School, Brown University, Providence, RI, 02903, USA
| | - Zev A Binder
- Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Donald M O'Rourke
- Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Stephen J Bagley
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, 3400 Civic Center Blvd, Philadelphia, PA, 19104, USA.
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4
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Kakavandi S, Zare I, VaezJalali M, Dadashi M, Azarian M, Akbari A, Ramezani Farani M, Zalpoor H, Hajikhani B. Structural and non-structural proteins in SARS-CoV-2: potential aspects to COVID-19 treatment or prevention of progression of related diseases. Cell Commun Signal 2023; 21:110. [PMID: 37189112 PMCID: PMC10183699 DOI: 10.1186/s12964-023-01104-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Accepted: 03/15/2023] [Indexed: 05/17/2023] Open
Abstract
Coronavirus disease 2019 (COVID-19) is caused by a new member of the Coronaviridae family known as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). There are structural and non-structural proteins (NSPs) in the genome of this virus. S, M, H, and E proteins are structural proteins, and NSPs include accessory and replicase proteins. The structural and NSP components of SARS-CoV-2 play an important role in its infectivity, and some of them may be important in the pathogenesis of chronic diseases, including cancer, coagulation disorders, neurodegenerative disorders, and cardiovascular diseases. The SARS-CoV-2 proteins interact with targets such as angiotensin-converting enzyme 2 (ACE2) receptor. In addition, SARS-CoV-2 can stimulate pathological intracellular signaling pathways by triggering transcription factor hypoxia-inducible factor-1 (HIF-1), neuropilin-1 (NRP-1), CD147, and Eph receptors, which play important roles in the progression of neurodegenerative diseases like Alzheimer's disease, epilepsy, and multiple sclerosis, and multiple cancers such as glioblastoma, lung malignancies, and leukemias. Several compounds such as polyphenols, doxazosin, baricitinib, and ruxolitinib could inhibit these interactions. It has been demonstrated that the SARS-CoV-2 spike protein has a stronger affinity for human ACE2 than the spike protein of SARS-CoV, leading the current study to hypothesize that the newly produced variant Omicron receptor-binding domain (RBD) binds to human ACE2 more strongly than the primary strain. SARS and Middle East respiratory syndrome (MERS) viruses against structural and NSPs have become resistant to previous vaccines. Therefore, the review of recent studies and the performance of current vaccines and their effects on COVID-19 and related diseases has become a vital need to deal with the current conditions. This review examines the potential role of these SARS-CoV-2 proteins in the initiation of chronic diseases, and it is anticipated that these proteins could serve as components of an effective vaccine or treatment for COVID-19 and related diseases. Video Abstract.
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Affiliation(s)
- Sareh Kakavandi
- Department of Bacteriology and Virology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Iman Zare
- Research and Development Department, Sina Medical Biochemistry Technologies Co. Ltd., Shiraz, 7178795844, Iran
| | - Maryam VaezJalali
- Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Masoud Dadashi
- Department of Microbiology, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran
- Non-Communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Maryam Azarian
- Department of Radiology, Charité - Universitätsmedizin Berlin, 10117, Berlin, Germany
| | - Abdullatif Akbari
- Shiraz Neuroscience Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
- Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Marzieh Ramezani Farani
- Department of Biological Sciences and Bioengineering, Nano Bio High-Tech Materials Research Center, Inha University, Incheon, 22212, Republic of Korea
| | - Hamidreza Zalpoor
- Shiraz Neuroscience Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
- Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA), Universal Scientific Education and Research Network (USERN), Tehran, Iran.
| | - Bahareh Hajikhani
- Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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5
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Han JM, Jung HJ. Cyclophilin A/CD147 Interaction: A Promising Target for Anticancer Therapy. Int J Mol Sci 2022; 23:ijms23169341. [PMID: 36012604 PMCID: PMC9408992 DOI: 10.3390/ijms23169341] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 08/12/2022] [Accepted: 08/18/2022] [Indexed: 11/16/2022] Open
Abstract
Cyclophilin A (CypA), which has peptidyl-prolyl cis-trans isomerase (PPIase) activity, regulates multiple functions of cells by binding to its extracellular receptor CD147. The CypA/CD147 interaction plays a crucial role in the progression of several diseases, including inflammatory diseases, coronavirus infection, and cancer, by activating CD147-mediated intracellular downstream signaling pathways. Many studies have identified CypA and CD147 as potential therapeutic targets for cancer. Their overexpression promotes growth, metastasis, therapeutic resistance, and the stem-like properties of cancer cells and is related to the poor prognosis of patients with cancer. This review aims to understand the biology and interaction of CypA and CD147 and to review the roles of the CypA/CD147 interaction in cancer pathology and the therapeutic potential of targeting the CypA/CD147 axis. To validate the clinical significance of the CypA/CD147 interaction, we analyzed the expression levels of PPIA and BSG genes encoding CypA and CD147, respectively, in a wide range of tumor types using The Cancer Genome Atlas (TCGA) database. We observed a significant association between PPIA/BSG overexpression and poor prognosis, such as a low survival rate and high cancer stage, in several tumor types. Furthermore, the expression of PPIA and BSG was positively correlated in many cancers. Therefore, this review supports the hypothesis that targeting the CypA/CD147 interaction may improve treatment outcomes for patients with cancer.
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Affiliation(s)
- Jang Mi Han
- Department of Life Science and Biochemical Engineering, Graduate School, Sun Moon University, Asan 31460, Korea
| | - Hye Jin Jung
- Department of Life Science and Biochemical Engineering, Graduate School, Sun Moon University, Asan 31460, Korea
- Department of Pharmaceutical Engineering and Biotechnology, Sun Moon University, Asan 31460, Korea
- Genome-Based BioIT Convergence Institute, Sun Moon University, Asan 31460, Korea
- Correspondence: ; Tel.: +82-41-530-2354; Fax: +82-41-530-2939
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The roles of Eph receptors, neuropilin-1, P2X7, and CD147 in COVID-19-associated neurodegenerative diseases: inflammasome and JaK inhibitors as potential promising therapies. Cell Mol Biol Lett 2022; 27:10. [PMID: 35109786 PMCID: PMC8809072 DOI: 10.1186/s11658-022-00311-1] [Citation(s) in RCA: 59] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 01/14/2022] [Indexed: 12/20/2022] Open
Abstract
The novel coronavirus disease 2019 (COVID-19) pandemic has spread worldwide, and finding a safe therapeutic strategy and effective vaccine is critical to overcoming severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Therefore, elucidation of pathogenesis mechanisms, especially entry routes of SARS-CoV-2 may help propose antiviral drugs and novel vaccines. Several receptors have been demonstrated for the interaction of spike (S) protein of SARS-CoV-2 with host cells, including angiotensin-converting enzyme (ACE2), ephrin ligands and Eph receptors, neuropilin 1 (NRP-1), P2X7, and CD147. The expression of these entry receptors in the central nervous system (CNS) may make the CNS prone to SARS-CoV-2 invasion, leading to neurodegenerative diseases. The present review provides potential pathological mechanisms of SARS-CoV-2 infection in the CNS, including entry receptors and cytokines involved in neuroinflammatory conditions. Moreover, it explains several neurodegenerative disorders associated with COVID-19. Finally, we suggest inflammasome and JaK inhibitors as potential therapeutic strategies for neurodegenerative diseases.
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7
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Galea I. The blood-brain barrier in systemic infection and inflammation. Cell Mol Immunol 2021; 18:2489-2501. [PMID: 34594000 PMCID: PMC8481764 DOI: 10.1038/s41423-021-00757-x] [Citation(s) in RCA: 210] [Impact Index Per Article: 70.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 08/04/2021] [Indexed: 02/08/2023] Open
Abstract
The vascular blood-brain barrier is a highly regulated interface between the blood and brain. Its primary function is to protect central neurons while signaling the presence of systemic inflammation and infection to the brain to enable a protective sickness behavior response. With increasing degrees and duration of systemic inflammation, the vascular blood-brain barrier becomes more permeable to solutes, undergoes an increase in lymphocyte trafficking, and is infiltrated by innate immune cells; endothelial cell damage may occasionally occur. Perturbation of neuronal function results in the clinical features of encephalopathy. Here, the molecular and cellular anatomy of the vascular blood-brain barrier is reviewed, first in a healthy context and second in a systemic inflammatory context. Distinct from the molecular and cellular mediators of the blood-brain barrier's response to inflammation, several moderators influence the direction and magnitude at genetic, system, cellular and molecular levels. These include sex, genetic background, age, pre-existing brain pathology, systemic comorbidity, and gut dysbiosis. Further progress is required to define and measure mediators and moderators of the blood-brain barrier's response to systemic inflammation in order to explain the heterogeneity observed in animal and human studies.
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Affiliation(s)
- Ian Galea
- grid.5491.90000 0004 1936 9297Clinical Neurosciences, Clinical & Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD UK
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8
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Kim HS, Kim HJ, Lee MR, Han I. EMMPRIN expression is associated with metastatic progression in osteosarcoma. BMC Cancer 2021; 21:1059. [PMID: 34565336 PMCID: PMC8474954 DOI: 10.1186/s12885-021-08774-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Accepted: 09/10/2021] [Indexed: 11/10/2022] Open
Abstract
Background Extracellular matrix metalloproteinase inducer (EMMPRIN), a cell-surface glycoprotein, is overexpressed in several cancer types. EMMPRIN induces a metastatic phenotype by triggering the production of matrix metalloproteinase proteins (MMPs) such as MMP1 and MMP2, and vascular endothelial growth factor (VEGF) in cancer cells and the surrounding stromal cells. The purpose of this study was to investigate the expression and role of EMMPRIN in osteosarcoma. Methods The level of EMMPRIN expression was evaluated using reverse transcriptase polymerase chain reaction (RT-PCR) in 6 tumor-derived osteosarcoma cell lines and compared with that in normal osteoblasts. To study the prognostic significance of EMMPRIN expression, immunohistochemistry was carried out in prechemotherapy biopsies of 54 patients. siRNA knockdown of EMMPRIN in SaOS-2 cells was conducted to explore the role of EMMPRIN. To study the role of EMMPRIN in tumor-stromal interaction in MMP production and invasion, co-culture of SaOS-2 cells with osteoblasts and fibroblasts was performed. Osteosarcoma 143B cells were injected into the tail vein of BALB/c mice and lung metastasis was analyzed. Results EMMRIN mRNA expression was significantly higher in 5 of 6 (83%) tumor-derived cells than in MG63 cells. 90% of specimens (50/54) stained positive for EMMPRIN by immunohistochemistry, and higher expression of EMMPRIN was associated with shorter metastasis-free survival (p = 0.023). Co-culture of SaOS-2 with osteoblasts resulted in increased production of pro-MMP2 and VEGF expression, which was inhibited by EMMPRIN-targeting siRNA. siRNA knockdown of EMMPRIN resulted in decreased invasion. EMMPRIN shRNA-transfected 143B cells showed decreased lung metastasis in vivo. Conclusions Our data suggest that EMMPRIN acts as a mediator of osteosarcoma metastasis by regulating MMP and VEGF production in cancer cells as well as stromal cells. EMMPRIN could serve as a therapeutic target in osteosarcoma.
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Affiliation(s)
- Han-Soo Kim
- Department of Orthopaedic Surgery, Seoul National University Hospital, 101 Daehak-ro Jongno-gu, Seoul, 03080, South Korea.,Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - Ha Jeong Kim
- Department of Orthopaedic Surgery, Seoul National University Hospital, 101 Daehak-ro Jongno-gu, Seoul, 03080, South Korea
| | - Mi Ra Lee
- Department of Orthopaedic Surgery, Seoul National University Hospital, 101 Daehak-ro Jongno-gu, Seoul, 03080, South Korea
| | - Ilkyu Han
- Department of Orthopaedic Surgery, Seoul National University Hospital, 101 Daehak-ro Jongno-gu, Seoul, 03080, South Korea. .,Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul, South Korea.
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9
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Dos Santos Souza I, Ziveri J, Bouzinba-Segard H, Morand P, Bourdoulous S. Meningococcus, this famous unknown. C R Biol 2021; 344:127-143. [PMID: 34213851 DOI: 10.5802/crbiol.56] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 06/07/2021] [Indexed: 01/04/2023]
Abstract
Neisseria meningitidis (meningococcus) is a Gram-negative bacterium responsible for two devastating forms of invasive diseases: purpura fulminans and meningitis. Since the first description of the epidemic nature of the illness at the dawn of the nineteenth century, the scientific knowledge of meningococcal infection has increased greatly. Major advances have been made in the management of the disease with the advent of antimicrobial therapy and the implementation of meningococcal vaccines. More recently, an extensive knowledge has been accumulated on meningococcal interaction with its human host, revealing key processes involved in disease progression and new promising therapeutic approaches.
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Affiliation(s)
- Isabel Dos Santos Souza
- CNRS, UMR8104, Paris, France.,Inserm, U1016, Institut Cochin, Paris, France.,Université de Paris, Faculté de Santé, France
| | - Jason Ziveri
- Inserm, U1016, Institut Cochin, Paris, France.,Inserm, U1016, Institut Cochin, Paris, France.,Université de Paris, Faculté de Santé, France
| | - Haniaa Bouzinba-Segard
- Inserm, U1016, Institut Cochin, Paris, France.,Inserm, U1016, Institut Cochin, Paris, France.,Université de Paris, Faculté de Santé, France
| | - Philippe Morand
- Inserm, U1016, Institut Cochin, Paris, France.,Inserm, U1016, Institut Cochin, Paris, France.,Université de Paris, Faculté de Santé, France
| | - Sandrine Bourdoulous
- Inserm, U1016, Institut Cochin, Paris, France.,Inserm, U1016, Institut Cochin, Paris, France.,Université de Paris, Faculté de Santé, France
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10
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Song Y, Bai L, Yan F, Chen C. Inhibition of EMMPRIN by microRNA-124 suppresses the growth, invasion and tumorigenicity of gliomas. Exp Ther Med 2021; 22:930. [PMID: 34306199 PMCID: PMC8281370 DOI: 10.3892/etm.2021.10362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Accepted: 03/17/2021] [Indexed: 11/11/2022] Open
Abstract
MicroRNAs (miR) are a group of non-coding, small RNAs, 18-20 nucleotides in length, that are frequently involved in the development of a variety of different types of cancer, including glioma, which is a type of severe tumor in the brain. Previous studies reported that miR-124 levels were downregulated in glioma specimens; however, the potential role of miR-124 in glioma currently remains unclear. The present study performed experiments, including dual-luciferase reporter assay (DLRA), MTT assay, transwell assay and flow cytometry, with the aim of elucidating the molecular mechanism of miR-124 in glioma. The results indicated that miR-124 expression was decreased in glioma tissues, accompanied by the increased expression of extracellular matrix metalloproteinase inducer (EMMPRIN). The expression of EMMPRIN was inhibited by miR-124 transfection. The DLRA results revealed that EMMPRIN directly targets miR-124. Furthermore, upon overexpression of miR-124 in the U87 cells, cell proliferation was significantly inhibited, apoptosis was increased, and cell migration and invasion were decreased. Furthermore, tumor growth was blocked by miR-124 in mice. Based on these results, the present study concluded that miR-124 is critical for amelioration of glioma by targeting EMMPRIN, thereby acting as a tumor suppressor. Thus, miR-124/EMMPRIN constitutes a plausible basis for the treatment of glioma.
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Affiliation(s)
- Yanbin Song
- Department of Neurosurgery, The First Hospital of Yulin, Yulin, Shanxi 719000, P.R. China
| | - Lei Bai
- Department of Neurosurgery, The First Hospital of Yulin, Yulin, Shanxi 719000, P.R. China
| | - Feiping Yan
- Department of Neurosurgery, The First Hospital of Yulin, Yulin, Shanxi 719000, P.R. China
| | - Chen Chen
- Department of Neurosurgery, The First Hospital of Yulin, Yulin, Shanxi 719000, P.R. China
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11
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Pan S, Su Y, Sun B, Hao R, Gao X, Han B. Knockout of CD147 inhibits the proliferation, invasion, and drug resistance of human oral cancer CAL27 cells in Vitro and in Vivo. Int J Biol Macromol 2021; 181:378-389. [PMID: 33766595 DOI: 10.1016/j.ijbiomac.2021.03.102] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 01/13/2021] [Accepted: 03/17/2021] [Indexed: 11/17/2022]
Abstract
With the development of modern biomedicine, research on the molecular mechanism of tumors has developed gradually. The CD147 gene has been applied to tumor molecular targeted therapy, and significant differences were found in the expression of the CD147 gene in different tumor tissues and normal tissues. Many previous studies have also shown that the expression of the CD147 gene plays a crucial role in the development of tumors. To understand whether CD147 can be used as a therapeutic target for oral cancer, CRISPR/Cas9 gene-editing technology was used to knock out the CD147 gene in cal27 cells to obtain knockout cell lines. Using CCK-8, Transwell, RT-PCR, and Western blotting, the proliferation and invasion abilities of the knockout cell lines were decreased significantly, and the expression of matrix metalloproteinase was also inhibited. Next, a subcutaneously transplanted tumor model in nude mice was constructed to detect the effect of the CD147 gene on tumors. Subcutaneous tumor growth and immunohistochemistry results showed that the proliferation and doxorubicin resistance of knockout cell line were significantly inhibited compared with those in the wild-type group. These results indicated that knocking out CD147 significantly reduced the proliferation and invasion of cal27 cells, and CD147 may be a potential therapeutic target for oral cancer.
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Affiliation(s)
- Siqi Pan
- Department of Biopharmacy, School of Pharmaceutical Sciences, Jilin University, Chang Chun, China
| | - Yu Su
- Department of Biopharmacy, School of Pharmaceutical Sciences, Jilin University, Chang Chun, China
| | - Bixi Sun
- Department of Biopharmacy, School of Pharmaceutical Sciences, Jilin University, Chang Chun, China
| | - Rubin Hao
- Department of Biopharmacy, School of Pharmaceutical Sciences, Jilin University, Chang Chun, China
| | - Xiaoshu Gao
- Department of Biopharmacy, School of Pharmaceutical Sciences, Jilin University, Chang Chun, China
| | - Bing Han
- Department of Biopharmacy, School of Pharmaceutical Sciences, Jilin University, Chang Chun, China.
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12
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Wang P, Hao X, Li X, Yan Y, Tian W, Xiao L, Wang Z, Dong J. Curcumin inhibits adverse psychological stress-induced proliferation and invasion of glioma cells via down-regulating the ERK/MAPK pathway. J Cell Mol Med 2021; 25:7190-7203. [PMID: 34169637 PMCID: PMC8335680 DOI: 10.1111/jcmm.16749] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 05/29/2021] [Accepted: 06/09/2021] [Indexed: 12/13/2022] Open
Abstract
Curcumin is a natural polyphenol extracted from the rhizome of Curcuma that has an important antitumour effect, but its effect on adverse psychological stress‐induced tumour proliferation and invasion has not been reported to date. Here, we found that curcumin not only inhibited the growth of xenografts in chronically stressed nude mice, but also decreased the expression of matrix metalloproteinase (MMP)‐2/9 and CD147 in tumour tissues. Exogenous norepinephrine (NE) was used to stimulate glioma cells to simulate the stress environment in vitro, and it was found that curcumin inhibited the NE‐induced proliferation and invasion of glioma cells in a dose‐dependent manner. Further research found that the effects of NE on glioma cells could lead to the activation of the mitogen‐activated protein kinase (MAPK) signalling pathway through β‐adrenergic receptor, while curcumin suppressed the level of extracellular signal–regulated kinase (ERK)1/2 phosphorylation. In addition, blocking ERK1/2 expression with U0126 resulted in the down‐regulated expression of CD147, which further led to the decreased expression of MMP‐2 and MMP‐9. Curcumin could also inhibit the expression of cyclin D1/CDK4/6 and anti‐apoptotic protein Bcl‐2/Bcl‐XL induced by NE, and induced cell cycle changes and increased apoptosis. Therefore, curcumin may be a potential candidate drug for preventing and treating the progression of glioma induced by adverse psychological stress.
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Affiliation(s)
- Ping Wang
- Department of Molecular Biology and Biochemistry, Weifang Medical University, Weifang, China
| | - Xinwei Hao
- Department of Molecular Biology and Biochemistry, Weifang Medical University, Weifang, China
| | - Xiaohan Li
- Department of Molecular Biology and Biochemistry, Weifang Medical University, Weifang, China
| | - Yizhi Yan
- Department of Molecular Biology and Biochemistry, Weifang Medical University, Weifang, China
| | - Wenxiu Tian
- Department of Molecular Biology and Biochemistry, Weifang Medical University, Weifang, China
| | - Lin Xiao
- Department of Molecular Biology and Biochemistry, Weifang Medical University, Weifang, China
| | - Zhenming Wang
- Department of Clinical Laboratory, Weifang People's Hospital, Weifang, China
| | - Junhong Dong
- Department of Molecular Biology and Biochemistry, Weifang Medical University, Weifang, China
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13
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Dos Santos Souza I, Maïssa N, Ziveri J, Morand PC, Coureuil M, Nassif X, Bourdoulous S. Meningococcal disease: A paradigm of type-IV pilus dependent pathogenesis. Cell Microbiol 2021; 22:e13185. [PMID: 32185901 DOI: 10.1111/cmi.13185] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 01/31/2020] [Accepted: 02/03/2020] [Indexed: 01/11/2023]
Abstract
Neisseria meningitidis (meningococcus) is a Gram-negative bacterium responsible for two devastating forms of invasive diseases: purpura fulminans and meningitis. Interaction with both peripheral and cerebral microvascular endothelial cells is at the heart of meningococcal pathogenesis. During the last two decades, an essential role for meningococcal type IV pili in vascular colonisation and disease progression has been unravelled. This review summarises 20 years of research on meningococcal type IV pilus-dependent virulence mechanisms, up to the identification of promising anti-virulence compounds that target type IV pili.
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Affiliation(s)
- Isabel Dos Santos Souza
- Inserm, U1016, Institut Cochin, Paris, France.,CNRS, UMR8104, Paris, France.,Faculté de Santé, Université de Paris, Paris, France
| | - Nawal Maïssa
- Inserm, U1016, Institut Cochin, Paris, France.,CNRS, UMR8104, Paris, France.,Faculté de Santé, Université de Paris, Paris, France
| | - Jason Ziveri
- Inserm, U1016, Institut Cochin, Paris, France.,CNRS, UMR8104, Paris, France.,Faculté de Santé, Université de Paris, Paris, France
| | - Philippe C Morand
- Inserm, U1016, Institut Cochin, Paris, France.,CNRS, UMR8104, Paris, France.,Faculté de Santé, Université de Paris, Paris, France
| | - Mathieu Coureuil
- Faculté de Santé, Université de Paris, Paris, France.,Inserm, U1151, Institut-Necker-Enfants-Malades, Paris, France.,CNRS, UMR 8253, Paris, France
| | - Xavier Nassif
- Faculté de Santé, Université de Paris, Paris, France.,Inserm, U1151, Institut-Necker-Enfants-Malades, Paris, France.,CNRS, UMR 8253, Paris, France.,Assistance Publique - Hôpitaux de Paris, Hôpital Necker Enfants Malades, Paris, France
| | - Sandrine Bourdoulous
- Inserm, U1016, Institut Cochin, Paris, France.,CNRS, UMR8104, Paris, France.,Faculté de Santé, Université de Paris, Paris, France
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14
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Han KY, Chang JH, Azar DT. Proteomics-Based Characterization of the Effects of MMP14 on the Protein Content of Exosomes from Corneal Fibroblasts. Protein Pept Lett 2021; 27:979-988. [PMID: 32268857 DOI: 10.2174/0929866527666200408142827] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 02/15/2020] [Accepted: 02/17/2020] [Indexed: 12/17/2022]
Abstract
BACKGROUND Exosomes secreted by corneal fibroblasts contain matrix metalloproteinase (MMP) 14, which is known to influence pro-MMP2 accumulation on exosomes. Accordingly, we hypothesized that the enzymatic activity of MMP14 may alter the protein content of corneal fibroblast- secreted exosomes. OBJECTIVE The aim of this study was to investigate the effects of MMP14 on the composition and biological activity of corneal fibroblast-derived exosomes. METHODS Knock out of the catalytic domain (ΔExon4) of MMP14 in corneal fibroblasts was used to determine the effect of MMP14 expression on the characteristics of fibroblast-secreted exosomes. The amount of secreted proteins and their size distribution were measured using Nano Tracking Analysis. Proteins within exosomes from wild-type (WT) and ΔExon4-deficient fibroblasts were identified by liquid chromatography-tandem mass spectrometry (MS/MS) proteomics analysis. The proteolytic effects of MMP14 were evaluated in vitro via MS identification of eliminated proteins. The biological functions of MMP14-carrying exosomes were investigated via fusion to endothelial cells and flow cytometric assays. RESULTS Exosomes isolated from WT and ΔExon4-deficient fibroblasts exhibited similar size distributions and morphologies, although WT fibroblasts secreted a greater amount of exosomes. The protein content, however, was higher in ΔExon4-deficient fibroblast-derived exosomes than in WT fibroblast-derived exosomes. Proteomics analysis revealed that WT-derived exosomes included proteins that regulated cell migration, and ΔExon4 fibroblast-derived exosomes contained additional proteins that were cleaved by MMP14. CONCLUSION Our findings suggest that MMP14 expression influences the protein composition of exosomes secreted by corneal fibroblasts, and through those biological components, MMP14 in corneal fibroblasts derived-exosomes may regulate corneal angiogenesis.
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Affiliation(s)
- Kyu-Yeon Han
- Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, College of Medicine, University of Illinois at Chicago, Chicago, IL 60612, United States
| | - Jin-Hong Chang
- Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, College of Medicine, University of Illinois at Chicago, Chicago, IL 60612, United States
| | - Dimitri T Azar
- Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, College of Medicine, University of Illinois at Chicago, Chicago, IL 60612, United States
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15
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Hyperactivation of P2X7 receptors as a culprit of COVID-19 neuropathology. Mol Psychiatry 2021; 26:1044-1059. [PMID: 33328588 PMCID: PMC7738776 DOI: 10.1038/s41380-020-00965-3] [Citation(s) in RCA: 88] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 11/04/2020] [Accepted: 11/17/2020] [Indexed: 12/14/2022]
Abstract
Scientists and health professionals are exhaustively trying to contain the coronavirus disease 2019 (COVID-19) pandemic by elucidating viral invasion mechanisms, possible drugs to prevent viral infection/replication, and health cares to minimize individual exposure. Although neurological symptoms are being reported worldwide, neural acute and long-term consequences of SARS-CoV-2 are still unknown. COVID-19 complications are associated with exacerbated immunoinflammatory responses to SARS-CoV-2 invasion. In this scenario, pro-inflammatory factors are intensely released into the bloodstream, causing the so-called "cytokine storm". Both pro-inflammatory factors and viruses may cross the blood-brain barrier and enter the central nervous system, activating neuroinflammatory responses accompanied by hemorrhagic lesions and neuronal impairment, which are largely described processes in psychiatric disorders and neurodegenerative diseases. Therefore, SARS-CoV-2 infection could trigger and/or worse brain diseases. Moreover, patients with central nervous system disorders associated to neuroimmune activation (e.g. depression, Parkinson's and Alzheimer's disease) may present increased susceptibility to SARS-CoV-2 infection and/or achieve severe conditions. Elevated levels of extracellular ATP induced by SARS-CoV-2 infection may trigger hyperactivation of P2X7 receptors leading to NLRP3 inflammasome stimulation as a key mediator of neuroinvasion and consequent neuroinflammatory processes, as observed in psychiatric disorders and neurodegenerative diseases. In this context, P2X7 receptor antagonism could be a promising strategy to prevent or treat neurological complications in COVID-19 patients.
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16
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Peptidome profiles in melamine diet-induced bladder stones in C57BL/6 mice. Toxicol Appl Pharmacol 2019; 385:114786. [DOI: 10.1016/j.taap.2019.114786] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 10/04/2019] [Accepted: 10/21/2019] [Indexed: 12/19/2022]
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17
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Aoki M, Koga K, Miyazaki M, Hamasaki M, Koshikawa N, Oyama M, Kozuka-Hata H, Seiki M, Toole BP, Nabeshima K. CD73 complexes with emmprin to regulate MMP-2 production from co-cultured sarcoma cells and fibroblasts. BMC Cancer 2019; 19:912. [PMID: 31510956 PMCID: PMC6739984 DOI: 10.1186/s12885-019-6127-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Accepted: 09/03/2019] [Indexed: 12/14/2022] Open
Abstract
Background Interaction between cancer cells and fibroblasts mediated by extracellular matrix metalloproteinase inducer (emmprin, CD147) is important in the invasion and proliferation of cancer cells. However, the exact mechanism of emmprin mediated stimulation of matrix metalloprotease-2 (MMP-2) production from fibroblasts has not been elucidated. Our previous studies using an inhibitory peptide against emmprin suggested the presence of a molecule on the cell membrane which forms a complex with emmprin. Here we show that CD73 expressed on fibroblasts interacts with emmprin and is a required factor for MMP-2 production in co-cultures of sarcoma cells with fibroblasts. Methods CD73 along with CD99 was identified by mass spectrometry analysis as an emmprin interacting molecule from a co-culture of cancer cells (epithelioid sarcoma cell line FU-EPS-1) and fibroblasts (immortalized fibroblasts cell line ST353i). MMP-2 production was measured by immunoblot and ELISA. The formation of complexes of CD73 with emmprin was confirmed by immunoprecipitation, and their co-localization in tumor cells and fibroblasts was shown by fluorescent immunostaining and proximity ligation assays. Results Stimulated MMP-2 production in co-culture of cancer cells and fibroblasts was completely suppressed by siRNA knockdown of CD73, but not by CD99 knockdown. MMP-2 production was not suppressed by CD73-specific enzyme inhibitor (APCP). However, MMP-2 production was decreased by CD73 neutralizing antibodies, suggesting that CD73-mediated suppression of MMP-2 production is non-enzymatic. In human epithelioid sarcoma tissues, emmprin was immunohistochemically detected to be mainly expressed in tumor cells, and CD73 was expressed in fibroblasts and tumor cells: emmprin and CD73 were co-localized predominantly on tumor cells. Conclusion This study provides a novel insight into the role of CD73 in emmprin-mediated regulation of MMP-2 production.
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Affiliation(s)
- M Aoki
- Department of Pathology, Fukuoka University School of Medicine, 7-45-1 Nanakuma, Jonan-ku, Fukuoka, 814-0180, Japan
| | - K Koga
- Department of Pathology, Fukuoka University School of Medicine, 7-45-1 Nanakuma, Jonan-ku, Fukuoka, 814-0180, Japan
| | - M Miyazaki
- Department of Pathology, Fukuoka University School of Medicine, 7-45-1 Nanakuma, Jonan-ku, Fukuoka, 814-0180, Japan
| | - M Hamasaki
- Department of Pathology, Fukuoka University School of Medicine, 7-45-1 Nanakuma, Jonan-ku, Fukuoka, 814-0180, Japan
| | - N Koshikawa
- Division of Cancer Cell Research, Kanagawa Cancer Center Research Institute, Yokohama, Japan.,Division of Cancer Cell Research, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - M Oyama
- Medical Proteomics Laboratory, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - H Kozuka-Hata
- Medical Proteomics Laboratory, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - M Seiki
- Division of Cancer Cell Research, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - B P Toole
- Regenerative Medicine & Cell Biology, Medical University of South Carolina, Charleston, USA
| | - K Nabeshima
- Department of Pathology, Fukuoka University School of Medicine, 7-45-1 Nanakuma, Jonan-ku, Fukuoka, 814-0180, Japan.
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18
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Jiang Z, Zhang H, Liu C, Yin J, Tong S, Lv J, Wei S, Wu S. β3GnT8 Promotes Colorectal Cancer Cells Invasion via CD147/MMP2/Galectin3 Axis. Front Physiol 2018; 9:588. [PMID: 29875690 PMCID: PMC5974207 DOI: 10.3389/fphys.2018.00588] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Accepted: 05/02/2018] [Indexed: 01/10/2023] Open
Abstract
β1,3-N-acetylglucosaminyltransferase (β3GnT8) and β3GnT2 are key enzymes that catalyzes the formation of polylactosamine glycan structures by transferring GlcNAc to tetra-antennary β1-6-branched N-glycan and it also has an important effect on the progression of various types of human cancer. They have been reported to participate in tumor invasion and metastasis by regulating the expression of matrix metalloproteinases (MMPs), CD147, and polylactosamine. However, whether β3GnT8 and β3GnT2 play a role in colorectal cancer and, if so, the underlying mechanisms remain unclear. In our study, we detected the expression of β3GnT8, CD147, MMP2, and galectin3 by immunohistochemistry on 90 paraffin-embedded slices. And β3GnT8, CD147, MMP2, and galectin3 were over-expressed in colorectal cancer tissues. We found that overexpression of β3GnT8 and β3GnT2 promoted invasion of colorectal cancer cells, whereas knockdown of β3GnT8 and β3GnT2 inhibited the invasive activity. Mechanistically, β3GnT8 and β3GnT2 regulated the expression of HG-CD147 and the level of polylactosamines in colorectal cancer cells. Together, these results illustrate that the novel role and the molecular mechanism of β3GnT8 and β3GnT2 in promotion of colorectal cancer invasion. These results suggest that the potential use of β3GnT8 as a tumor target for the therapy of colorectal cancer.
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Affiliation(s)
- Zhi Jiang
- Department of Biochemistry and Molecular Biology, School of Medicine, Soochow University, Suzhou, China
| | - Huan Zhang
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, China.,First People's Hospital of Changshu City, Changshu Hospital Affiliated to Soochow University, Changshu, China
| | - Chunliang Liu
- Department of Biochemistry and Molecular Biology, School of Medicine, Soochow University, Suzhou, China.,Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Jun Yin
- Department of General Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Shan Tong
- Department of General Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Junxing Lv
- Department of Biochemistry and Molecular Biology, School of Medicine, Soochow University, Suzhou, China
| | - Shaohua Wei
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Shiliang Wu
- Department of Biochemistry and Molecular Biology, School of Medicine, Soochow University, Suzhou, China
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19
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Garcia-Romero N, Esteban-Rubio S, Rackov G, Carrión-Navarro J, Belda-Iniesta C, Ayuso-Sacido A. Extracellular vesicles compartment in liquid biopsies: Clinical application. Mol Aspects Med 2018; 60:27-37. [DOI: 10.1016/j.mam.2017.11.009] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 11/08/2017] [Accepted: 11/14/2017] [Indexed: 02/07/2023]
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20
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Hu X, Su J, Zhou Y, Xie X, Peng C, Yuan Z, Chen X. Repressing CD147 is a novel therapeutic strategy for malignant melanoma. Oncotarget 2018; 8:25806-25813. [PMID: 28445958 PMCID: PMC5421970 DOI: 10.18632/oncotarget.15709] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 01/22/2017] [Indexed: 12/21/2022] Open
Abstract
CD147/basigin, a transmembrane protein, is a member of the immunoglobulin super family. Accumulating evidence has revealed the role of CD147 in the development and progression of various cancers, including malignant melanoma (MM). MM is a malignancy of pigment-producing cells that causes the greatest number of skin cancer-related deaths worldwide. CD147 is overexpressed in MM and plays an important role in cell viability, apoptosis, proliferation, invasion, and metastasis, probably by mediating vascular endothelial growth factor (VEGF) production, glycolysis, and multi-drug resistance (MDR). As a matrix metalloproteinase (MMP) inducer, CD147 could also promote surrounding fibroblasts to secrete abundant MMPs to further stimulate tumor cell invasion. Targeting CD147 has been shown to suppress MM in vitro and in vivo, highlighting the therapeutic potential of CD147 silencing in MM treatment. In this review article, we discuss CD147 and its biological roles, regulatory mechanisms, and potential application as a molecular target for MM.
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Affiliation(s)
- Xing Hu
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, China
| | - Juan Su
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, China
| | - Youyou Zhou
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, China
| | - Xiaoyun Xie
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, China
| | - Cong Peng
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, China
| | - Zhimin Yuan
- Department of Genetics and Complex Diseases, Harvard T.H Chan School of Public Health, Boston, MA, USA
| | - Xiang Chen
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, China
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21
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Liu C, Qiu H, Lin D, Wang Z, Shi N, Tan Z, Liu J, Jiang Z, Wu S. c-Jun-dependent β3GnT8 promotes tumorigenesis and metastasis of hepatocellular carcinoma by inducing CD147 glycosylation and altering N-glycan patterns. Oncotarget 2018; 9:18327-18340. [PMID: 29719608 PMCID: PMC5915075 DOI: 10.18632/oncotarget.24192] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 12/01/2017] [Indexed: 12/15/2022] Open
Abstract
β3GnT8, a key polylactosamine synthase, plays a vital role in progression of various types of human cancer. The role of β3GnT8 in hepatocellular carcinoma (HCC) and the underlying mechanisms, however, remain largely unknown. In this study, we found that β3GnT8 and polylactosamine were highly expressed in HCC tissues compared with those in adjacent paracancer tissues. Overexpression of β3GnT8 promoted while knockdown of β3GnT8 inhibited HCC cell invasion and migration in vitro. Importantly, enhanced tumorigenesis was observed in nude mice inoculated with β3GnT8-overexpressing HCC cells, suggesting that β3GnT8 is important for HCC development in vitro and in vivo. Mechanistically, β3GnT8 modulated the N-glycosylation patterns of CD147 and altered the polylactosamine structures in HCC cells by physically interacting with CD147. In addition, our data showed the c-Jun could directly bind to the promoter of β3GnT8 gene and regulate β3GnT8 expression. β3GnT8 regulated HCC cell invasion and migration in a C-Jun-dependent manner. Collectively, our study identified β3GnT8 as a novel regulator for HCC invasion and tumorigenesis. Targeting β3GnT8 may be a potential therapeutic strategy against HCC.
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Affiliation(s)
- Chunliang Liu
- Department of Biochemistry and Molecular Biology, The First Affiliated Hospital of Soochow University, Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Hao Qiu
- Department of Biochemistry and Molecular Biology, The First Affiliated Hospital of Soochow University, Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Dandan Lin
- Department of Biochemistry and Molecular Biology, The First Affiliated Hospital of Soochow University, Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Zerong Wang
- Department of Infectious Diseases, The Fifth People's Hospital of Suzhou, Suzhou, Jiangsu 215007, P.R. China
| | - Ning Shi
- Department of Physiology and Pharmacology, University of Georgia, Athens 30602 GA, USA
| | - Zengqi Tan
- College of Life Science, Northwest University, Xian, Shanxi 710069, P.R. China
| | - Jun Liu
- Department of Biochemistry and Molecular Biology, The First Affiliated Hospital of Soochow University, Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Zhi Jiang
- Department of Biochemistry and Molecular Biology, The First Affiliated Hospital of Soochow University, Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Shiliang Wu
- Department of Biochemistry and Molecular Biology, The First Affiliated Hospital of Soochow University, Soochow University, Suzhou, Jiangsu 215123, P.R. China
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22
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Lee SJ, Kwon S, Gatti JR, Korcari E, Gresser TE, Felix PC, Keep SG, Pasquale KC, Bai T, Blanchett-Anderson SA, Wu NW, Obeng-Nyarko C, Senagbe KM, Young KC, Maripudi S, Yalavarthi BC, Korcari D, Liu AY, Schaffler BC, Keep RF, Wang MM. Large-scale identification of human cerebrovascular proteins: Inter-tissue and intracerebral vascular protein diversity. PLoS One 2017; 12:e0188540. [PMID: 29190776 PMCID: PMC5708641 DOI: 10.1371/journal.pone.0188540] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Accepted: 11/08/2017] [Indexed: 12/21/2022] Open
Abstract
The human cerebrovascular system is responsible for regulating demand-dependent perfusion and maintaining the blood-brain barrier (BBB). In addition, defects in the human cerebrovasculature lead to stroke, intracerebral hemorrhage, vascular malformations, and vascular cognitive impairment. The objective of this study was to discover new proteins of the human cerebrovascular system using expression data from the Human Protein Atlas, a large-scale project which allows public access to immunohistochemical analysis of human tissues. We screened 20,158 proteins in the HPA and identified 346 expression patterns correlating to blood vessels in human brain. Independent experiments showed that 51/52 of these distributions could be experimentally replicated across different brain samples. Some proteins (40%) demonstrated endothelial cell (EC)-enriched expression, while others were expressed primarily in vascular smooth muscle cells (VSMC; 18%); 39% of these proteins were expressed in both cell types. Most brain EC markers were tissue oligospecific; that is, they were expressed in endothelia in an average of 4.8 out of 9 organs examined. Although most markers expressed in endothelial cells of the brain were present in all cerebral capillaries, a significant number (21%) were expressed only in a fraction of brain capillaries within each brain sample. Among proteins found in cerebral VSMC, virtually all were also expressed in peripheral VSMC and in non-vascular smooth muscle cells (SMC). Only one was potentially brain specific: VHL (Von Hippel-Lindau tumor suppressor). HRC (histidine rich calcium binding protein) and VHL were restricted to VSMC and not found in non-vascular tissues such as uterus or gut. In conclusion, we define a set of brain vascular proteins that could be relevant to understanding the unique physiology and pathophysiology of the human cerebrovasculature. This set of proteins defines inter-organ molecular differences in the vasculature and confirms the broad heterogeneity of vascular cells within the brain.
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Affiliation(s)
- Soo Jung Lee
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Soonhyung Kwon
- School of Social Work, University of Michigan, Ann Arbor, Michigan, United States of America
| | - John R. Gatti
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Ejona Korcari
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Ty E. Gresser
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Princess C. Felix
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Simon G. Keep
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Kevin C. Pasquale
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Tongxu Bai
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, United States of America
| | | | - Nancy W. Wu
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Charissa Obeng-Nyarko
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Kossi M. Senagbe
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Kathy C. Young
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Snehaa Maripudi
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Bharath C. Yalavarthi
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Dajana Korcari
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Andre Y. Liu
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Benjamin C. Schaffler
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Richard F. Keep
- Department of Neurosurgery, University of Michigan, Ann Arbor, Michigan, United States of America
- Department of Molecular & Integrative Physiology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Michael M. Wang
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, United States of America
- Department of Molecular & Integrative Physiology, University of Michigan, Ann Arbor, Michigan, United States of America
- Neurology Service, VA Ann Arbor Healthcare System, Ann Arbor, Michigan, United States of America
- * E-mail:
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Wang S, Liu C, Liu X, He Y, Shen D, Luo Q, Dong Y, Dong H, Pang Z. Effects of matrix metalloproteinase inhibitor doxycycline and CD147 antagonist peptide-9 on gallbladder carcinoma cell lines. Tumour Biol 2017; 39:1010428317718192. [PMID: 29034777 DOI: 10.1177/1010428317718192] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Gallbladder carcinoma is the most common and aggressive malignancy of the biliary tree and highly expresses CD147, which is closely related to disease prognosis in a variety of human cancers. Doxycycline exhibited anti-tumor properties in many cancer cells. CD147 antagonist peptide-9 is a polypeptide and can specifically bind to CD147. The effect of these two drugs on gallbladder cancer cells has not been studied. The aim of this study is to investigate the effect of doxycycline and antagonist peptide-9 on gallbladder carcinoma cells and the possible mechanism of inhibition on cancer cell of doxycycline. To investigate the effects of doxycycline and antagonist peptide-9 on gallbladder carcinoma cells (GBC-SD and SGC-996), cell proliferation, CD147 expression, and early-stage apoptosis rate were measured after treated with doxycycline. Matrix metalloproteinase-2 and matrix metalloproteinase-9 activities were measured after treated with different concentrations of doxycycline, antagonist peptide-9, and their combination. The results demonstrated that doxycycline inhibited cell proliferation, reduced CD147 expression level, and induced an early-stage apoptosis response in GBC-SD and SGC-996 cells. The matrix metalloproteinase-2 and matrix metalloproteinase-9 activities were inhibited by antagonist peptide-9 and doxycycline, and the inhibitory effects were enhanced by combined drugs in gallbladder carcinoma cell lines. Taken together, doxycycline showed inhibitory effects on gallbladder carcinoma cell lines and reduced the expression of CD147, and this may be the mechanism by which doxycycline inhibits cancer cells. This study provides new information and tries to implement the design of adjuvant therapy method for gallbladder carcinoma.
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Affiliation(s)
- Shihang Wang
- Department of General Surgery, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Chao Liu
- Department of General Surgery, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xinjiang Liu
- Department of General Surgery, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yanxin He
- Department of General Surgery, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Dongfang Shen
- Department of General Surgery, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Qiankun Luo
- Department of General Surgery, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yuxi Dong
- Department of General Surgery, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Haifeng Dong
- Department of General Surgery, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Zhigang Pang
- Department of General Surgery, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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Liu C, Qiu H, Yu M, Wang Z, Yuan Y, Jiang Z, Shao X, Hua D, Liu M, Wu S. c-Jun-mediated β-1,3-N-acetylglucosaminyltransferase 8 expression: A novel mechanism regulating the invasion and metastasis of colorectal carcinoma cells. Oncol Lett 2017; 14:3722-3728. [PMID: 28927138 DOI: 10.3892/ol.2017.6624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Accepted: 02/03/2017] [Indexed: 11/05/2022] Open
Abstract
β-1,3-N-Acetylglucosaminyltransferase 8 (β3GnT8) is a key enzyme that catalyzes the formation of polylactosamine glycan structures by transferring GlcNAc to tetra-antennary β1-6-branched N-glycans, and it has been reported to participate in tumor invasion and metastasis by regulating the expression of matrix metalloproteinases (MMPs), cluster of differentiation 147 (CD147) and polylactosamine. By contrast, the role of transcription factor c-Jun in cell cycle progression has been well established. c-Jun has an important role in tumor cell invasion and metastasis. However, the precise molecular mechanisms by which c-Jun regulates these processes in colorectal carcinoma cells are not fully elucidated. In the present study, c-Jun had a significant effect on the invasive and migratory abilities of SW480 and LoVo cells. Additionally, overexpression of c-Jun was able to increase the expression of β3GnT8, MMPs, CD147 and polylactosamine. Similarly, knockdown of c-Jun was able to decrease the expression of β3GnT8, MMPs, CD147 and polylactosamine. These results suggest that c-Jun is able to regulate colorectal carcinoma cell invasion and metastasis via β3GnT8. A chromatin immunoprecipitation assay indicated that c-Jun is able to bind directly to the promoter regions of β3GnT8 in SW480 and LoVo cells. This leads to transcriptional activation of β3GnT8, which in turn regulates the expression of tumor invasion and metastasis-associated genes. The results of the present study demonstrate a novel mechanism underlying colorectal carcinoma cell invasion and metastasis, where β3GnT8 is transcriptionally activated via c-Jun binding to its promoter.
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Affiliation(s)
- Chunliang Liu
- Department of Biochemistry and Molecular Biology, School of Medicine, Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Hao Qiu
- Department of Biochemistry and Molecular Biology, School of Medicine, Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Meiyun Yu
- Department of Biochemistry and Molecular Biology, School of Medicine, Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Zerong Wang
- The Fifth People's Hospital of Suzhou, Suzhou, Jiangsu 215007, P.R. China
| | - Yaqin Yuan
- Department of Biochemistry and Molecular Biology, School of Medicine, Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Zhi Jiang
- Department of Biochemistry and Molecular Biology, School of Medicine, Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Xuejun Shao
- The Affiliated Children's Hospital of Soochow University, Suzhou, Jiangsu 215025, P.R. China
| | - Dong Hua
- The Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu 214062, P.R. China
| | - Min Liu
- Suzhou Hospital of Traditional Chinese Medicine, Suzhou, Jiangsu 215009, P.R. China
| | - Shiliang Wu
- Department of Biochemistry and Molecular Biology, School of Medicine, Soochow University, Suzhou, Jiangsu 215123, P.R. China
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Abstract
Gliomas are the most common primary brain tumors. This meta-analysis aimed to systematically evaluate the relationship between CD147 expression in tissues and the clinicopathological features of patients with glioma. We searched PubMed (1966-2016), EMBASE (1980-2016), Cochrane Library (1996-2016), Web of Science (1945-2016), China National Knowledge Infrastructure (1982-2016), and Wan Fang databases (1988-2016). Quality assessment of the literature was performed using the Newcastle-Ottawa Scale, with Revman 5.3 and Stata 14.0 for analysis. In total, 1806 glioma patients from 19 studies were included, and patients with CD147 overexpression had poorer overall survival [hazard ratio (HR) = 2.211, P < 0.0001], a higher risk of recurrence (HR = 2.20, P = 0.0025), and a lower 5-year survival rate [odds ratio (OR) 0.12; 95% CI 0.08-0.19; P < 0.00001]. We observed significant differences in CD147 expression when comparing glioma tissues versus non-cancerous brain tissues (OR 20.42; 95% CI 13.94-29.91; P < 0.00001), tumor grades III-IV versus grades I-II (OR 5.88, 95% CI 4.15-8.34; P < 0.00001), and large versus small tumors (OR 1.58, 95% CI 1.04-2.40; P = 0.03). We also observed a significant correlation with matrix metalloproteinase (MMP) 2 (OR 39.11, 95% CI 11.47-133.34; P < 0.00001) and MMP9 (OR 13.35, 95% CI 4.67-38.18; P < 0.00001). CD147 expression did not differ based on patient's age (young vs. old, P = 0.89) or gender (female vs. male, P = 0.57). CD147 expression may be a potential prognostic biomarker for poorer overall and relapse-free survival, and may affect the 5-year survival rate in glioma patients. CD147 expression is also closely correlated with poor clinical characteristics in glioma patients.
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Xu B, Jiang C, Han H, Liu H, Tang M, Liu L, Ji W, Lu X, Yang X, Zhang Y, Liu Y. Icaritin inhibits the invasion and epithelial-to-mesenchymal transition of glioblastoma cells by targeting EMMPRIN via PTEN/AKt/HIF-1α signalling. Clin Exp Pharmacol Physiol 2016; 42:1296-307. [PMID: 26356761 DOI: 10.1111/1440-1681.12488] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 08/28/2015] [Accepted: 09/06/2015] [Indexed: 12/23/2022]
Abstract
Icaritin, a hydrolytic product of icariin from the Epimedium genus, exerts anti-tumour effects on a variety of tumour cell types, mainly by inhibiting cell proliferation and inducing apoptosis. However, little is known about the role of icaritin in cancer invasion and epithelial-to-mesenchymal transition (EMT). In the present study, the glioblastoma (GBM) cell line U87MG was used as a model to investigate the effects of icaritin on the invasion and EMT of cancer cells. The results showed that icaritin significantly inhibited the invasion and EMT of GBM cells by targeting extracellular matrix metalloproteinase (EMMPRIN). Furthermore, the findings strongly indicate that the modulatory effect of icaritin on EMMPRIN is mediated via the PTEN/Akt/HIF-1α signalling pathway. The data provide the first experimental evidence of the inhibitory effect of icaritin on cancer cell invasion and EMT, thus highlighting the potential of icaritin to be employed as a promising anti-cancer agent in the treatment of GBM.
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Affiliation(s)
- Bo Xu
- Department of Neurology, Provincial Hospital of Shandong University, Jinan, Shandong, China.,Department of Neurology, The Second Affiliated Hospital, Medical College of Qingdao University, Qingdao, Shandong, China
| | - Chuanwu Jiang
- Department of Neurology and Department of Neurosurgery, Qingdao Hiser Medical Centre, Qingdao, Shandong, China
| | - Hongxing Han
- Department of Neurology, Qilu Hospital of Shandong University, Jinan and Department of Neurology Linyi People's Hospital, Linyi, Shandong, China
| | - Hong Liu
- Department of Neurology and Department of Neurosurgery, Qingdao Hiser Medical Centre, Qingdao, Shandong, China
| | - Ming Tang
- Department of Neurology and Department of Neurosurgery, Qingdao Hiser Medical Centre, Qingdao, Shandong, China
| | - Longxi Liu
- Department of Neurology and Department of Neurosurgery, Qingdao Hiser Medical Centre, Qingdao, Shandong, China
| | - Wenyan Ji
- Department of Neurology and Department of Neurosurgery, Qingdao Hiser Medical Centre, Qingdao, Shandong, China
| | - Xuechao Lu
- Department of Neurology and Department of Neurosurgery, Qingdao Hiser Medical Centre, Qingdao, Shandong, China
| | - Xiuli Yang
- Department of Neurology and Department of Neurosurgery, Qingdao Hiser Medical Centre, Qingdao, Shandong, China
| | - Yunxu Zhang
- Department of Neurology and Department of Neurosurgery, Qingdao Hiser Medical Centre, Qingdao, Shandong, China
| | - Yongji Liu
- Department of Neurology and Department of Neurosurgery, Qingdao Hiser Medical Centre, Qingdao, Shandong, China
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The effects of CD147 on the cell proliferation, apoptosis, invasion, and angiogenesis in glioma. Neurol Sci 2016; 38:129-136. [PMID: 27761842 DOI: 10.1007/s10072-016-2727-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Accepted: 09/30/2016] [Indexed: 10/20/2022]
Abstract
To analyze the effects of extracellular matrix metalloproteinase inducer (CD147) on glioma proliferation, apoptosis, invasion, and angiogenesis. Tissue samples were obtained from 101 glioma cases while normal brain tissues were obtained from 30 brain injury cases. Immunohistochemical assay was performed to detect the expressions of CD147, CD34, and VEGF in tissue samples. QRT-PCR was performed to detect the relative expression of CD147 mRNA in human glioma cell lines. CD147 siRNA was transfected into glioma cell line U251. Cell proliferation, apoptosis, invasion, and angiogenesis were tested by MTT, flow cytometry, Transwell assay, and vasculogenic mimicry assay, respectively. Expressions of relative proteins were analyzed with western blot. CD147 was positively expressed with the percentage of 0, 37.5, 44.8, 67.9, and 85.7 % in normal tissues and glioma tissues with WHO grades I-IV, respectively, and the scores of MVDand VEGF were associated with the expression of CD147. CD147 was significantly upregulated in the human glioma cell lines (P < 0.05). Downregulated the expression of CD147 suppressed cell proliferation, blocked cell cycle, induced apoptosis, inhibited cell invasion and angiogenesis in glioma cells in vitro. The expression of CD147 was significantly associated with WHO tumor grade and angiogenesis; silencing of CD147 contributed to inhibition of glioma proliferation, invasion, and angiogenesis. Our study provided firm evidence that CD 147 is a potential glioma target for anti-angiogenic therapies.
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Nambiar J, Bose C, Venugopal M, Banerji A, Patel TB, Kumar GB, Nair BG. Anacardic acid inhibits gelatinases through the regulation of Spry2, MMP-14, EMMPRIN and RECK. Exp Cell Res 2016; 349:139-151. [PMID: 27737732 DOI: 10.1016/j.yexcr.2016.10.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2016] [Revised: 09/24/2016] [Accepted: 10/09/2016] [Indexed: 01/31/2023]
Abstract
Earlier studies from our laboratory have identified Anacardic acid (AA) as a potent inhibitor of gelatinases (MMP-2 and 9), which are over-expressed in a wide variety of cancers (Omanakuttan et al., 2012). Disruption of the finely tuned matrix metalloproteinase (MMP) activator/inhibitor balance plays a decisive role in determining the fate of the cell. The present study demonstrates for the first time, that in addition to regulating the expression as well as activity of gelatinases, AA also inhibits the expression of its endogenous activators like MMP-14 and Extracellular Matrix MetalloProteinase Inducer (EMMPRIN) and induces the expression of its endogenous inhibitor, REversion-inducing Cysteine-rich protein with Kazal motifs (RECK). In addition to modulating gelatinases, AA also inhibits the expression of various components of the Epidermal Growth Factor (EGF) pathway like EGF, Protein Kinase B (Akt) and Mitogen-activated protein kinases (MAPK). Furthermore, AA also activates the expression of Sprouty 2 (Spry2), a negative regulator of EGF pathway, and silencing Spry2 results in up-regulation of expression of gelatinases as well as MMP-14. The present study thus elucidates a novel mechanism of action of AA and provides a strong basis for utilizing this molecule as a template for cancer therapeutics.
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Affiliation(s)
- Jyotsna Nambiar
- Amrita School of Biotechnology, Amrita Vishwa Vidyapeetham, Amritapuri, Clappana P.O., Kollam 690525, Kerala, India
| | - Chinchu Bose
- Amrita School of Biotechnology, Amrita Vishwa Vidyapeetham, Amritapuri, Clappana P.O., Kollam 690525, Kerala, India
| | - Meera Venugopal
- Amrita School of Biotechnology, Amrita Vishwa Vidyapeetham, Amritapuri, Clappana P.O., Kollam 690525, Kerala, India
| | - Asoke Banerji
- Amrita School of Biotechnology, Amrita Vishwa Vidyapeetham, Amritapuri, Clappana P.O., Kollam 690525, Kerala, India
| | - Tarun B Patel
- Albany College of Pharmacy and Health Sciences, New York, USA
| | - Geetha B Kumar
- Amrita School of Biotechnology, Amrita Vishwa Vidyapeetham, Amritapuri, Clappana P.O., Kollam 690525, Kerala, India
| | - Bipin G Nair
- Amrita School of Biotechnology, Amrita Vishwa Vidyapeetham, Amritapuri, Clappana P.O., Kollam 690525, Kerala, India.
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29
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Evaluating Soluble EMMPRIN as a Marker of Disease Activity in Multiple Sclerosis: Studies of Serum and Cerebrospinal Fluid. PLoS One 2016; 11:e0163802. [PMID: 27727297 PMCID: PMC5058493 DOI: 10.1371/journal.pone.0163802] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2016] [Accepted: 09/14/2016] [Indexed: 11/19/2022] Open
Abstract
Extracellular matrix metalloproteinase inducer (EMMPRIN, CD147) is an inducer of matrix metalloproteinases and has roles in leukocyte activation and migration. We reported previously that in MS and its animal model, experimental autoimmune encephalomyelitis, cell surface-associated EMMPRIN was significantly elevated in leukocytes around inflammatory perivascular cuffs in the CNS. In this study we report that activated T-cells can secrete soluble form of EMMPRIN (sEMMPRIN) upon activation. As sEMMPRIN is also present in biological fluids, we determined whether sEMMPRIN is altered in the CSF and sera of MS subjects. Sera from individuals without neurological conditions served as controls, while CSFs collected from subjects undergoing discectomy, and without evidence of CNS pathology, were used as a comparator group. We found that serum levels of sEMMPRIN from clinically stable MS patients or other inflammatory conditions did not differ from control subjects. Paired serum and CSF samples demonstrated poor correlation of sEMMPRIN. Interestingly, sEMMPRIN levels were approximately 60% higher in CSFs compared to sera. sEMMPRIN CSF levels were significantly higher in secondary progressive compared to primary progressive subjects. Thus we conclude that measurement of sEMMPRIN in serum is not informative for disease activity in MS. The differential expression of sEMMPRIN in the CSF of primary and secondary progressive MS invites hypotheses of the still undefined roles of EMMPRIN in the CNS.
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Kong X, Wang Y, Dai C, Ma W, Wang R. Is CD147 a New Biomarker Reflecting Histological Malignancy of Gliomas? Mol Neurobiol 2016; 54:1568-1576. [PMID: 27206428 DOI: 10.1007/s12035-016-9894-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2016] [Accepted: 04/21/2016] [Indexed: 10/21/2022]
Abstract
CD147 belongs to immunoglobulin superfamily and can stimulate the surrounding fibroblasts to secret matrix metalloproteinases (MMPs). Studies showed that when compared with their normal counterparts, CD47 expression level increased in lung carcinoma tissue, breast cancer tissue, and bladder cancer tissue. They increase in line with a tumor's malignant progression, invasiveness, and metastasis. However, the precise implications and utility of the presence of CD147 in the WHO grading system for gliomas have rarely been reported; in addition, the signal transduction pathways regarding CD147 remain unclear and controversial. Thus, in performing a meta-analysis, it is essential to reach a reliable conclusion. The related literatures were incorporated into the present meta-analysis after careful assessment, and odds ratios (ORs) with 95 % confidence intervals (95 % CIs) were calculated. Heterogeneity evaluation was estimated. Ten studies involving 615 patients were found to be eligible, nine of which were conducted in China and the remaining one in Japan. Analysis of eight studies involving dichotomous data revealed that CD147 overexpression in glioma tissue was related to higher WHO grading (III + IV; OR, 9.900; 95 % CI, 5.943, 16.491; P = 0.000) closely, whereas analysis of three studies of continuous data type indicated that there were no statistical associations (standard mean difference, -1.894; 95 % CI, -4.081, 0.293; P = 0.090). In accordance with funnel plot, Egger test, and Begg test, there was no publication bias. Considering that the continuous data make up only a small proportion of the overall analysis, we believe that our study indicates that CD147 overexpression is potentially related to higher WHO grade. Certainly, more data compiled based on evidence-based medicine are required to further support this conclusion.
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Affiliation(s)
- Xiangyi Kong
- Department of Neurosurgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, No. 1 Shuaifuyuan Hutong of Dongcheng District, Beijing, 100730, China
| | - Yu Wang
- Department of Neurosurgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, No. 1 Shuaifuyuan Hutong of Dongcheng District, Beijing, 100730, China
| | - Congxin Dai
- Department of Neurosurgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, No. 1 Shuaifuyuan Hutong of Dongcheng District, Beijing, 100730, China
| | - Wenbin Ma
- Department of Neurosurgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, No. 1 Shuaifuyuan Hutong of Dongcheng District, Beijing, 100730, China
| | - Renzhi Wang
- Department of Neurosurgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, No. 1 Shuaifuyuan Hutong of Dongcheng District, Beijing, 100730, China.
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Ren YX, Wang SJ, Fan JH, Sun SJ, Li X, Padhiar AA, Zhang JN. CD147 stimulates hepatoma cells escaping from immune surveillance of T cells by interaction with Cyclophilin A. Biomed Pharmacother 2016; 80:289-297. [PMID: 27133068 DOI: 10.1016/j.biopha.2016.03.036] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 03/25/2016] [Indexed: 11/17/2022] Open
Abstract
T cells play an important role in tumor immune surveillance. CD147 is a member of immunoglobulin superfamily present on the surface of many tumor cells and mediates malignant cell behaviors. Cyclophilin A (CypA) is an intracellular protein promoting inflammation when released from cells. CypA is a natural ligand for CD147. In this study, CD147 specific short hairpin RNAs (shRNA) were transfected into murine hepatocellular carcinoma Hepa1-6 cells to assess the effects of CD147 on hepatoma cells escaping from immune surveillance of T cells. We found extracellular CypA stimulated cell proliferation through CD147 by activating ERK1/2 signaling pathway. Downregulation of CD147 expression on Hepa1-6 cells significantly suppressed tumor progression in vivo, and decreased cell viability when co-cultured with T cells in vitro. Importantly, knockdown of CD147 on Hepa1-6 cells resulted in significantly increased T cells chemotaxis induced by CypA both in vivo and in vitro. These findings provide novel mechanisms how tumor cells escaping from immune surveillance of T cells. We provide a potential therapy for hepatocellular carcinoma by targeting CD147 or CD147-CypA interactions.
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Affiliation(s)
- Yi-Xin Ren
- Department of Biochemistry, Dalian Medical University, 9 South Lvshun Road Western Section, Dalian 116044, Liaoning, China; Department of Parasitology, Dalian Medical University, 9 South Lvshun Road Western Section, Dalian 116044, Liaoning, China
| | - Shu-Jing Wang
- Department of Biochemistry, Dalian Medical University, 9 South Lvshun Road Western Section, Dalian 116044, Liaoning, China
| | - Jian-Hui Fan
- Department of Biochemistry, Dalian Medical University, 9 South Lvshun Road Western Section, Dalian 116044, Liaoning, China
| | - Shi-Jie Sun
- Department of Immunology, Dalian Medical University, 9 South Lvshun Road Western Section, Dalian 116044, Liaoning, China
| | - Xia Li
- Department of Immunology, Dalian Medical University, 9 South Lvshun Road Western Section, Dalian 116044, Liaoning, China
| | - Arshad Ahmed Padhiar
- Department of Biochemistry, Dalian Medical University, 9 South Lvshun Road Western Section, Dalian 116044, Liaoning, China
| | - Jia-Ning Zhang
- Department of Biochemistry, Dalian Medical University, 9 South Lvshun Road Western Section, Dalian 116044, Liaoning, China; School of Life Science and Medicine, Dalian University of Technology, 2 Linggong Road, Dalian 116024, Liaoning, China.
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Abstract
Gliomas are characterized by their invasiveness, angiogenesis, glycolysis and poor prognosis. Determining how to inhibit angiogenesis and glycolysis and induce cell death in gliomas is essential to the development of an effective therapy. CD147, a highly glycosylated transmembrane glycoprotein with two Ig-like extracellular domains that belongs to the immunoglobulin superfamily, plays an important role in the regulation of tumor invasiveness, angiogenesis and glycolysis by inducing the secretion of matrix metalloproteinases and vascular endothelial growth factor and by interacting with monocarboxylate transporters. In this review, we first summarize the roles played by CD147 in gliomas and then propose that CD147 may be a complementary prognostic biomarker and a possible therapeutic target for glioma treatment.
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Affiliation(s)
- Fei Fei
- a 1 Department of Ophthalmology, Xijing Hospital, Fourth Military Medical University, Xi'an 71032, P.R. China.,b 2 Department of Cell Biology, College of Basic Medicine, Fourth Military Medical University, Xi'an, 710032, P.R. China
| | - Sanzhong Li
- c 3 Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, P.R. China
| | - Zhou Fei
- c 3 Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, P.R. China
| | - Zhinan Chen
- b 2 Department of Cell Biology, College of Basic Medicine, Fourth Military Medical University, Xi'an, 710032, P.R. China
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Kaushik DK, Hahn JN, Yong VW. EMMPRIN, an upstream regulator of MMPs, in CNS biology. Matrix Biol 2015; 44-46:138-46. [PMID: 25644103 DOI: 10.1016/j.matbio.2015.01.018] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Revised: 01/24/2015] [Accepted: 01/24/2015] [Indexed: 01/24/2023]
Abstract
Matrix metalloproteinases (MMPs) are engaged in pathologies associated with infections, tumors, autoimmune disorders and neurological dysfunctions. With the identification of an upstream regulator of MMPs, EMMPRIN (Extracellular matrix metalloproteinase inducer, CD147), it is relevant to address if EMMPRIN plays a role in the pathology of central nervous system (CNS) diseases. This would enable the possibility of a more upstream and effective therapeutic target. Indeed, conditions including gliomas, Alzheimer's disease (AD), multiple sclerosis (MS), and other insults such as hypoxia/ischemia show elevated levels of EMMPRIN which correlate with MMP production. In contrast, given EMMPRIN's role in CNS homeostasis with respect to regulation of monocarboxylate transporters (MCTs) and interactions with adhesion molecules including integrins, we need to consider that EMMPRIN may also serve important regulatory or protective functions. This review summarizes the current understanding of EMMPRIN's involvement in CNS homeostasis, its possible roles in escalating or reducing neural injury, and the mechanisms of EMMPRIN including and apart from MMP induction.
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Affiliation(s)
| | | | - V Wee Yong
- Hotchkiss Brain Institute, University of Calgary, Calgary, Canada.
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Chen H, Lam Fok K, Jiang X, Chan HC. New insights into germ cell migration and survival/apoptosis in spermatogenesis: Lessons from CD147. SPERMATOGENESIS 2014; 2:264-272. [PMID: 23248767 PMCID: PMC3521748 DOI: 10.4161/spmg.22014] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
CD147, also named basigin (Bsg) or extracellular matrix (ECM) metalloproteinase inducer (EMMPRIN), is a highly glycosylated protein first identified as a tumor cell surface molecule. In cancer, it is well established that CD147 promotes metastasis by stimulating the production of MMPs. Recent studies have also suggested that it may be associated with tumor growth and angiogenesis. Interestingly, CD147 is expressed in germ cells of different development stages in the testis and its knockout mice are infertile, indicating an essential role of CD147 in spermatogenesis. While the detailed involvement of CD147 in spermatogenesis remains elusive, our recent findings have revealed a dual role of CD147 in germ cell development. On the one hand, it regulates the migration of spermatogonia and spermatocytes via the induction of MMP-2 production; on the other hand, it specifically regulates the survival/apoptosis of spermatocytes but not spermatogonia through a p53-independent pathway. In this review, we aim to provide an overview on the functions of CD147, comparing its roles in cancer and the testis, thereby providing new insights into the regulatory mechanisms underlying the process of spermatogenesis.
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Affiliation(s)
- Hao Chen
- The Second People's Hospital of Shenzhen; The First Affiliated Hospital of Shenzhen University; Shenzhen, P.R. China ; Epithelial Cell Biology Research Center; School of Biomedical Sciences; Faculty of Medicine; The Chinese University of Hong Kong; Shatin, Hong Kong
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35
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shRNA-Mediated EMMPRIN Silencing Inhibits Human Leukemic Monocyte Lymphoma U937 Cell Proliferation and Increases Chemosensitivity to Adriamycin. Cell Biochem Biophys 2014; 71:827-35. [DOI: 10.1007/s12013-014-0270-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Invasive meningococcal disease: a disease of the endothelial cells. Trends Mol Med 2014; 20:571-8. [PMID: 25178566 DOI: 10.1016/j.molmed.2014.08.002] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Revised: 08/06/2014] [Accepted: 08/07/2014] [Indexed: 02/04/2023]
Abstract
Neisseria meningitidis is an extracellular pathogen, which, once in the bloodstream, has the ability to form microcolonies on the apical surface of endothelia. Pathogen interaction with microvessels is mediated by bacterial type IV pili and two receptors on endothelial cells: CD147 and the β2-adrenoceptor. CD147 facilitates the adhesion of diplococci to the endothelium, whereas the β2-adrenoceptor facilitates cell signaling, and crossing of the blood-brain barrier. In this review, we discuss how meningococcal interaction with endothelial cells is responsible for the specific clinical features of invasive meningococcal infection such as meningitis, and a peripheral thrombotic/vascular leakage syndrome possibly leading to purpura fulminans.
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Pathogenic Neisseria meningitidis utilizes CD147 for vascular colonization. Nat Med 2014; 20:725-31. [PMID: 24880614 PMCID: PMC7095922 DOI: 10.1038/nm.3563] [Citation(s) in RCA: 114] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Accepted: 04/10/2014] [Indexed: 01/07/2023]
Abstract
Neisseria meningitidis is a cause of meningitis epidemics worldwide and of rapidly progressing fatal septic shock. A crucial step in the pathogenesis of invasive meningococcal infections is the adhesion of bloodborne meningococci to both peripheral and brain endothelia, leading to major vascular dysfunction. Initial adhesion of pathogenic strains to endothelial cells relies on meningococcal type IV pili, but the endothelial receptor for bacterial adhesion remains unknown. Here, we report that the immunoglobulin superfamily member CD147 (also called extracellular matrix metalloproteinase inducer (EMMPRIN) or Basigin) is a critical host receptor for the meningococcal pilus components PilE and PilV. Interfering with this interaction potently inhibited the primary attachment of meningococci to human endothelial cells in vitro and prevented colonization of vessels in human brain tissue explants ex vivo and in humanized mice in vivo. These findings establish the molecular events by which meningococci target human endothelia, and they open new perspectives for treatment and prevention of meningococcus-induced vascular dysfunctions.
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Novel regulators of spermatogenesis. Semin Cell Dev Biol 2014; 29:31-42. [PMID: 24594193 DOI: 10.1016/j.semcdb.2014.02.008] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Revised: 02/14/2014] [Accepted: 02/17/2014] [Indexed: 02/07/2023]
Abstract
Spermatogenesis is a multistep process that supports the production of millions of sperm daily. Understanding of the molecular mechanisms that regulate spermatogenesis has been a major focus for decades. Yet, the regulators involved in different cellular processes of spermatogenesis remain largely unknown. Human diseases that result in defective spermatogenesis have provided hints on the molecular mechanisms regulating this process. In this review, we have summarized recent findings on the function and signaling mechanisms of several genes that are known to be associated with disease or pathological processes, including CFTR, CD147, YWK-II and CT genes, and discuss their potential roles in regulating different processes of spermatogenesis.
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Futamura N, Nishida Y, Urakawa H, Kozawa E, Ikuta K, Hamada S, Ishiguro N. EMMPRIN co-expressed with matrix metalloproteinases predicts poor prognosis in patients with osteosarcoma. Tumour Biol 2014; 35:5159-65. [PMID: 24481662 DOI: 10.1007/s13277-014-1668-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2013] [Accepted: 01/17/2014] [Indexed: 01/29/2023] Open
Abstract
Several studies have focused on the relationships between the expression of extracellular matrix metalloproteinase inducer (EMMPRIN) and the prognosis of patients with malignant tumors. However, few of these have investigated the expression of EMMPRIN in osteosarcoma. We examined expression levels of EMMPRIN immunohistochemically in 53 cases of high-grade osteosarcoma of the extremities and analyzed the correlation of its expression with patient prognosis. The correlation between matrix metalloproteinases (MMPs) and EMMPRIN expression and the prognostic value of co-expression were also analyzed. Staining positivity for EMMPRIN was negative in 7 cases, low in 17, moderate in 19, and strong in 10. The overall and disease-free survivals (OS and DFS) in patients with higher EMMPRIN expression (strong-moderate) were significantly lower than those in the lower (weak-negative) group (0.037 and 0.024, respectively). In multivariate analysis, age (P=0.004), location (P=0.046), and EMMPRIN expression (P=0.038) were significant prognostic factors for overall survival. EMMPRIN expression (P=0.024) was also a significant prognostic factor for disease-free survival. Co-expression analyses of EMMPRIN and MMPs revealed that strong co-expression of EMMPRIN and membrane-type 1 (MT1)-MMP had a poor prognostic value (P=0.056 for DFS, P=0.006 for OS). EMMPRIN expression and co-expression with MMPs well predict the prognosis of patients with extremity osteosarcoma, making EMMPRIN a possible therapeutic target in these patients.
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Affiliation(s)
- Naohisa Futamura
- Department of Orthopaedic Surgery, Nagoya University Graduate School and School of Medicine, 65-Tsurumai, Showa, Nagoya, Aichi, 466-8550, Japan
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Hoelscher M, Richter N, Melle C, von Eggeling F, Schaenzer A, Nestler U. SELDI-TOF analysis of glioblastoma cyst fluid is an approach for assessing cellular protein expression. Neurol Res 2013; 35:993-1001. [PMID: 24225180 PMCID: PMC3823932 DOI: 10.1179/016164113x13756993777580] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
OBJECTIVES In about 10% of glioblastoma patients, preoperative MRI discloses the presence of tumor cysts. Whereas the impact of cystic appearance on prognosis has been discussed extensively, only little is known about the tumor cyst fluid. In this study, we tested the feasibility of the surface enhanced laser desorption ionization time of flight (SELDI-TOF) technique to detect cyst fluid proteins. METHODS Cyst fluid was collected from 21 glioblastoma patients for SELDI-TOF analysis and compared to control cerebrospinal fluids from 15 patients with spinal stenosis. Resulting protein peaks with significant differences between groups were further described, using the molecular weight in an internet search of protein databases and publications. Two potential cyst fluid proteins, basigin and ferritin light chain, were selected for immunohistological detection in the histologic slides of the patients, metallothionein (MT) served as negative control. RESULTS As supposed from the results of the SELDI-TOF analysis, basigin and ferritin were detected immunohistochemically in the cyst wall, whereas MT was more equally distributed between the cyst wall and the surrounding tumor tissue. Median survival time of the patients was 20 months (range 2 to 102 months) and correlated with age, but not with expression of the three proteins. DISCUSSION The SELDI-TOF approach reveals a number of proteins, potentially present in glioblastoma cyst fluid. Identification of these proteins in tumor cells may help understand the pathogenetic pathways and the prognostic value of cystic changes.
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Affiliation(s)
- Martin Hoelscher
- Department of Neurosurgery, Justus Liebig University, Giessen, Germany
| | - Nina Richter
- Department of Neurosurgery, Justus Liebig University, Giessen, Germany
| | - Christian Melle
- Institute of Human Genetics, CUCA, Jena University Hospital, Jena, Germany
| | | | - Anne Schaenzer
- Institute for Neuropathology, Justus Liebig University, Giessen, Germany
| | - Ulf Nestler
- Department of Neurosurgery, Justus Liebig University, Giessen, Germany
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Sayegh ET, Kaur G, Bloch O, Parsa AT. Systematic review of protein biomarkers of invasive behavior in glioblastoma. Mol Neurobiol 2013; 49:1212-44. [PMID: 24271659 DOI: 10.1007/s12035-013-8593-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2013] [Accepted: 11/11/2013] [Indexed: 12/26/2022]
Abstract
Glioblastoma (GBM) is an aggressive and incurable brain tumor with a grave prognosis. Recurrence is inevitable even with maximal surgical resection, in large part because GBM is a highly invasive tumor. Invasiveness also contributes to the failure of multiple cornerstones of GBM therapy, including radiotherapy, temozolomide chemotherapy, and vascular endothelial growth factor blockade. In recent years there has been significant progress in the identification of protein biomarkers of invasive phenotype in GBM. In this article, we comprehensively review the literature and survey a broad spectrum of biomarkers, including proteolytic enzymes, extracellular matrix proteins, cell adhesion molecules, neurodevelopmental factors, cell signaling and transcription factors, angiogenic effectors, metabolic proteins, membrane channels, and cytokines and chemokines. In light of the marked variation seen in outcomes in GBM patients, the systematic use of these biomarkers could be used to form a framework for better prediction, prognostication, and treatment selection, as well as the identification of molecular targets for further laboratory investigation and development of nascent, directed therapies.
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Affiliation(s)
- Eli T Sayegh
- Department of Neurological Surgery, Northwestern University Feinberg School of Medicine, 676 N. St. Clair Street, Suite 2210, Chicago, IL, 60611-2911, USA
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Li R, Pan Y, He B, Xu Y, Gao T, Song G, Sun H, Deng Q, Wang S. Downregulation of CD147 expression by RNA interference inhibits HT29 cell proliferation, invasion and tumorigenicity in vitro and in vivo. Int J Oncol 2013; 43:1885-94. [PMID: 24064772 DOI: 10.3892/ijo.2013.2108] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Accepted: 09/02/2013] [Indexed: 11/06/2022] Open
Abstract
We investigated the effect of CD147 silencing on HT29 cell proliferation and invasion. We constructed a novel short hairpin RNA (shRNA) expression vector pYr-mir30-shRNA. The plasmid was transferred to HT29 cells. The expression of CD147, MCT1 (lactate transporters monocarboxylate transporter 1) and MCT4 (lactate transporters monocarboxylate transporter 4) were monitored by quantitative PCR and western blotting, respectively. The MMP-2 (matrix metalloproteinase-2) and MMP-9 (matrix metalloproteinase-9) activities were determined by gelatin zymography assay, while the intracellular lactate concentration was determined by the lactic acid assay kit. WST-8 assay was used to determine the HT29 cell proliferation and the chemosensitivity. Invasion assay was used to determine the invasion of HT29 cells. In addition, we established a colorectal cancer model, and detected CD147 expression in vivo. The results showed that the expression of CD147 and MCT1 was significantly reduced at both mRNA and protein levels, and also the activity of MMP-2 and MMP-9 was reduced. The proliferation and invasion were decreased, but chemosensitivity to cisplatin was increased. In vivo, the CD147 expression was also significantly decreased, and reduced the tumor growth after CD147 gene silencing. The results demonstrated that silencing of CD147 expression inhibited the proliferation and invasion, suggesting CD147 silencing might be an adjuvant gene therapy strategy to chemotherapy.
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Affiliation(s)
- Rui Li
- Department of Life Sciences, Nanjing Normal University, Nanjing, Jiangsu 210006, P.R. China
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43
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Sato M, Nakai Y, Nakata W, Yoshida T, Hatano K, Kawashima A, Fujita K, Uemura M, Takayama H, Nonomura N. EMMPRIN promotes angiogenesis, proliferation, invasion and resistance to sunitinib in renal cell carcinoma, and its level predicts patient outcome. PLoS One 2013; 8:e74313. [PMID: 24073208 PMCID: PMC3779201 DOI: 10.1371/journal.pone.0074313] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Accepted: 07/26/2013] [Indexed: 01/21/2023] Open
Abstract
PURPOSE Extracellular matrix metalloproteinase inducer (EMMPRIN) has been reported to play crucial roles, including in angiogenesis, in several carcinomas. However, the correlation between EMMPRIN levels and angiogenesis expression profile has not been reported, and the role of EMMPRIN in renal cell carcinoma (RCC) is unclear. In the present study, we evaluated the association of EMMPRIN with angiogenesis, its value in prognosis, and its roles in RCC. EXPERIMENTAL DESIGN EMMPRIN expression was examined in 50 RCC patients treated with radical nephrectomy. Angiogenesis, proliferation, and invasion activity were evaluated using EMMPRIN knockdown RCC cell lines. The size of EMMPRIN-overexpressing xenografts was measured and the degree of angiogenesis was quantified. EMMPRIN expression was evaluated in RCC patients who received sunitinib therapy and in sunitinib-resistant cells. Further, the relation between EMMPRIN expression and sensitivity to sunitinib was examined. RESULTS EMMPRIN score was significantly associated with clinicopathological parameters in RCC patients, as well as being significantly correlated with microvessel area (MVA) in immature vessels and with prognosis. Down-regulation of EMMPRIN by siRNA led to decreased VEGF and bFGF expression, cell proliferation, and invasive potential. EMMPRIN over-expressing xenografts showed accelerated growth and MVA of immature vessels. EMMPRIN expression was significantly increased in patients who received sunitinib therapy as well as in sunitinib-resistant 786-O cells (786-suni). EMMPRIN-overexpressing RCC cells were resistant to sunitinib. CONCLUSION Our findings indicate that high expression of EMMPRIN in RCC plays important roles in tumor progression and sunitinib resistance. Therefore, EMMPRIN could be a novel target for the treatment of RCC.
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Animals
- Apoptosis
- Basigin/physiology
- Blotting, Western
- Carcinoma, Renal Cell/blood supply
- Carcinoma, Renal Cell/mortality
- Carcinoma, Renal Cell/pathology
- Cell Movement
- Cell Proliferation
- Down-Regulation
- Drug Resistance, Neoplasm
- Female
- Humans
- Immunoenzyme Techniques
- Indoles/pharmacology
- Kidney/drug effects
- Kidney/metabolism
- Kidney/pathology
- Kidney Neoplasms/blood supply
- Kidney Neoplasms/mortality
- Kidney Neoplasms/pathology
- Male
- Mice
- Mice, Inbred BALB C
- Middle Aged
- Neoplasm Invasiveness
- Neoplasm Staging
- Neovascularization, Pathologic/metabolism
- Pyrroles/pharmacology
- RNA, Messenger/genetics
- RNA, Small Interfering/genetics
- Real-Time Polymerase Chain Reaction
- Reverse Transcriptase Polymerase Chain Reaction
- Sunitinib
- Tumor Cells, Cultured
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Affiliation(s)
- Mototaka Sato
- The Department of Urology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yasutomo Nakai
- The Department of Urology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Wataru Nakata
- The Department of Urology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Takahiro Yoshida
- The Department of Urology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Koji Hatano
- The Department of Urology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Atsunari Kawashima
- The Department of Urology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Kazutoshi Fujita
- The Department of Urology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Motohide Uemura
- The Department of Urology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Hitoshi Takayama
- The Department of Urology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Norio Nonomura
- The Department of Urology, Osaka University Graduate School of Medicine, Osaka, Japan
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Yang M, Yuan Y, Zhang H, Yan M, Wang S, Feng F, Ji P, Li Y, Li B, Gao G, Zhao J, Wang L. Prognostic significance of CD147 in patients with glioblastoma. J Neurooncol 2013; 115:19-26. [PMID: 23925827 DOI: 10.1007/s11060-013-1207-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Accepted: 07/15/2013] [Indexed: 12/21/2022]
Abstract
CD147, also known as extracellular matrix metalloproteinase inducer, is a widely distributed cell surface glycoprotein that belongs to the immunoglobulin superfamily. CD147 has been proved to be enriched on the surface of many tumor cells, promoting tumor growth, invasion and metastasis by its stimulation effect on adjacent fibroblasts to produce matrix metalloproteinases. In this study, we aimed to explore the expression pattern of CD147 in glioblastoma (GBM) and investigate whether it could be used to assess subsequent prognosis of patients. For that, we recruited a total of 206 patients with pathologically confirmed GBM and 36 normal control brain tissue specimens. The expression of CD147 in GBM and normal tissues was investigated by immunohistochemistry assay. Genetic factors including MGMT and IDH1 mutation were also investigated to justify the prognostic significance of CD147. Results showed that CD147 expression was increased in GBM compared with that in normal tissues. Kaplan-Meier analysis showed that increased CD147 expression was associated with poor overall survival of patients with GBM. Moreover, Cox's proportional hazards model revealed that CD147 expression was an independent and significant prognostic marker of overall survival in GBM patients. These results proved that CD147 expression was relatively abundant in GBM and can be potentially used to predict prognosis and treatment response in GBM patients.
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Affiliation(s)
- Min Yang
- Institute of Orthopaedics and Traumatology of PLA of China, Xijing Hospital, The Fourth Military Medical University, Xi'an, 710032, Shaanxi, People's Republic of China
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Sweeny L, Hartman YE, Zinn KR, Prudent JR, Marshall DJ, Shekhani MS, Rosenthal EL. A novel extracellular drug conjugate significantly inhibits head and neck squamous cell carcinoma. Oral Oncol 2013; 49:991-7. [PMID: 23920309 DOI: 10.1016/j.oraloncology.2013.07.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2013] [Revised: 07/13/2013] [Accepted: 07/17/2013] [Indexed: 12/01/2022]
Abstract
OBJECTIVES Despite advances in treatment modalities, head and neck squamous cell carcinoma (HNSCC) remains a challenge to treat with poor survival and high morbidity, necessitating a therapy with greater efficacy. EDC22 is an extracellular drug conjugate of the monoclonal antibody targeting CD147 (glycoprotein highly expressed on HNSCC cells) linked with a small drug molecule inhibitor of Na, K-ATPase. In this study, EDC22's potential as a treatment modality for HNSCC was performed. MATERIALS AND METHODS HNSCC cell lines (FADU, OSC-19, Cal27, SCC-1) were cultured in vitro and proliferation and cell viability were assessed following treatment with a range of concentrations of EDC22 (0.25-5.00μg/mL). Mice bearing HNSCC xenografts (OSC-19, SCC-1) were treated with either EDC22 (3-10mg/kg), anti-CD147 monoclonal antibody, cisplatin (1mg/kg) or radiation therapy (2Gy/week) monotherapy or in combination. RESULTS In vitro, treatment with minimal concentration of EDC22 (0.25μg/mL) significantly decreased cellular proliferation and cell viability (p<0.0001). In vivo, systemic treatment with EDC22 significantly decreased primary tumor growth rate in both an orthotopic mouse model (OSC-19) and a flank tumor mouse model (SCC-1) (p<0.05). In addition, EDC22 therapy resulted in a greater reduction in tumor growth in vivo compared to radiation monotherapy (p<0.05) and a similar reduction in tumor growth compared to cisplatin monotherapy. Combination therapy provided no significant further reduction in tumor growth relative to EDC22 monotherapy. CONCLUSION EDC22 is a potent inhibitor of HNSCC cell proliferation in vitro and in vivo, warranting further investigations of its clinical potential in the treatment of HNSCC.
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Affiliation(s)
- Larissa Sweeny
- University of Alabama at Birmingham, Department of Surgery, Division of Otolaryngology - Head and Neck Surgery, 1670 University Boulevard, Volker Hall G082, Birmingham, AL 35233, USA
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EMMPRIN expression positively correlates with WHO grades of astrocytomas and meningiomas. J Neurooncol 2013; 114:281-90. [PMID: 23817808 PMCID: PMC3744650 DOI: 10.1007/s11060-013-1184-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2012] [Accepted: 06/22/2013] [Indexed: 11/25/2022]
Abstract
High-grade primary brain tumors possessed poor outcome due to invasiveness. Extracellular matrix metalloproteinase inducer (EMMPRIN) stimulates peri-tumoral fibroblasts to secrete matrix metalloproteinase and promote invasiveness. This study hypothesized that high-grade brain tumors overexpress EMMPRIN. Analyzing the public delinked database from the Gene Expression Omnibus profile, the results showed that the EMMPRIN mRNA level was higher in WHO grade IV (n = 81) than in grade III (n = 19, p < 0.0005) astrocytomas and non-tumor brain tissue controls (n = 23, p < 0.00001). The results of tissue microarray-based immunohistochemical (IHC) staining revealed that EMMPRIN levels positively correlated with WHO grades for astrocytomas (p = 0.008) and meningiomas (p = 0.048). EMMPRIN mRNA levels in conventional glioma cell lines (n = 36) was not less than those in glioma primary culture cells (n = 27) and glioblastoma stem-like cells (n = 12). The GBM8401, U87MG, and LN229 human glioma cell lines also overexpressed EMMPRIN. Hematoxylin and eosin, IHC, and immunofluorescence staining of xenografts confirmed that high-grade brain tumors overexpressed EMMPRIN. Lastly, Kaplan–Meier analysis revealed poorer survival in WHO grade IV (n = 56) than in grade III astrocytomas (n = 21, by log-rank test; p = 0.0001, 95 % CI: 1.842–3.053). However, in high-grade astrocytomas, there was no difference in survival between high and low EMMPRIN mRNA levels. Thus, this study identified that high-grade brain tumors overexpress EMMPRIN, which positively correlates with WHO grades in human astrocytomas and meningiomas, and suggests that EMMPRIN may be a therapeutic target of brain tumor.
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Abstract
Cerebral endothelial cells participate in the blood-brain barrier and regulate activity-dependent changes in brain blood flow. It has been assumed that all cerebral endothelial cells are similar, but genetic studies in mice suggest that there are heterogeneous populations of endothelial cells in rodent brain. In this study, we tested for molecular heterogeneity of endothelial cells in the human brain. Human brains (five A and five O blood type patients) from autopsies were analyzed by immunohistochemistry and immunofluorescence using antibodies against von Willebrand factor (vWF) and A and H blood group antigens. vWF and ABO antigens were confined to the endothelium. Although all endothelial cells expressed vWF, capillary endothelial cells from A blood type brains showed a heterogeneous expression of A and H antigens, with individual cells expressing either one or both antigens. There were no differences between the gray and the white matter in the percentage of A-reactive or H-reactive capillaries. We conclude that ABO antigen expression in the human brain is modulated at the level of the individual endothelial cell. Future studies are warranted to determine whether differences in capillary permeability and cerebral autoregulation vary over short distances within the brain.
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Tian L, Zhang Y, Chen Y, Cai M, Dong H, Xiong L. EMMPRIN is an independent negative prognostic factor for patients with astrocytic glioma. PLoS One 2013; 8:e58069. [PMID: 23516431 PMCID: PMC3596336 DOI: 10.1371/journal.pone.0058069] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Accepted: 01/29/2013] [Indexed: 11/30/2022] Open
Abstract
Extracellular matrix metalloproteinase inducer (EMMPRIN), also known as CD147, is a member of the immunoglobulin superfamily that is present on the surface of tumor cells and stimulates adjacent fibroblasts to produce matrix metalloproteinases (MMPs). It has been proved to be associated with tumor invasion and metastasis in various human malignancies. In our study, the protein expression level of EMMPRIN in 306 cases of astrocytic glioma is investigated by immunohistochemistry assay. Statistical analysis was utilized to evaluate the association of EMMPRIN with clinicopathological characteristics and prognosis of patients. It was proved that EMMPRIN protein expression was increased in glioma compared with that in normal brain tissue. Moreover, EMMPRIN immunohistochemical staining was correlated with WHO grade and Karnofsky performance score for strong positive EMMPRIN staining is more frequently detected in glioma of advanced grade or low KPS score. It is also demonstrated that EMMPRIN could be an independent negative prognostic factor in glioma for patients with glioma of strong EMMPRIN staining tend to have high risk of death. These results proved that EMMPRIN is associated with prognosis of glioma, which may also suggest the potential role of EMMPRIN in glioma management.
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Affiliation(s)
- Li Tian
- Department of Anesthesiology, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi, China
| | - Yang Zhang
- Department of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi, China
| | - Yu Chen
- Department of Anesthesiology, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi, China
| | - Min Cai
- Department of Anesthesiology, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi, China
| | - Hailong Dong
- Department of Anesthesiology, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi, China
- * E-mail: (HD); (LX)
| | - Lize Xiong
- Department of Anesthesiology, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi, China
- * E-mail: (HD); (LX)
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Huang T, Chen MH, Wu MY, Wu XY. Correlation between expression of extracellular matrix metalloproteinase inducer and matrix metalloproteinase-2 and cervical lymph node metastasis of nasopharyngeal carcinoma. Ann Otol Rhinol Laryngol 2013; 122:210-5. [PMID: 23577575 DOI: 10.1177/000348941312200311] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
OBJECTIVES We evaluated the expression of extracellular matrix metalloproteinase inducer (EMMPRIN) and matrix metalloproteinase-2 (MMP-2) in nasopharyngeal carcinoma (NPC) and studied their relationship with cervical lymph node metastasis. METHODS Immunohistochemical staining was used to detect the expression of EMMPRIN and MMP-2 in specimens from patients with chronic nasopharyngitis (CN), nonmetastastic NPC (NM-NPC), and lymph node-metastatic NPC (LNM-NPC). RESULTS The rates of positive EMMPRIN expression in CN, NM-NPC, and LNM-NPC were 13.3%, 30.0%, and 66.7%, respectively. Significant differences were found between the rates in CN and LNM-NPC (p <0.01) and between the rates in NM-NPC and LNM-NPC (p = 0.01). In the LNM-NPC group, NPC cells had a higher rate of expression of EMMPRIN in tumor metastases than in the primary tumor (81.8% versus 66.7%; p = 0.01). The rates of positive MMP-2 expression in CN, NM-NPC, and LNM-NPC were 13.3%, 35.0%, and 60.6%, respectively. A significant difference was found between the rates in CN and LNM-NPC (p < 0.01). In the LNM-NPC group, NPC cells had a higher rate of MMP-2 expression in tumor metastases than in the primary tumor (72.7% versus 60.6%; p <0.01). The expressions of MMP-2 and EMMPRIN were highly correlated (rs = 0.466; p <0.01). CONCLUSIONS Nasopharyngeal carcinoma cells may attain enhanced metastastic capability through the expression of MMP-2 induced by EMMPRIN.
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Affiliation(s)
- Tian Huang
- Institute of Inflammation and Immune Diseases, Shantou University Medical College, Shantou, People's Republic of China
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50
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Tu Y, Fu J, Wang J, Fu G, Wang L, Zhang Y. Extracellular matrix metalloproteinase inducer is associated with severity of brain oedema following experimental subarachnoid haemorrhage in rats. J Int Med Res 2013; 40:1089-98. [PMID: 22906282 DOI: 10.1177/147323001204000328] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE Brain oedema is a major cause of clinical deterioration and death following brain trauma; cellular mechanisms involved in its development remain elusive. This study investigated the role of extracellular matrix metalloproteinase inducer (EMMPRIN) in brain oedema. METHODS The monofilament puncture model was used to induce subarachnoid haemorrhage. Adult male Sprague-Dawley rats were divided into five groups (n = 20 per group): sham-operated, sacrificed immediately after surgery (sham group); sacrificed 12, 24 or 72 h after subarachnoid haemorrhage induction (SAH-12, SAH-24 and SAH-72 groups, respectively); treated with EMMPRIN inhibitor immediately after subarachnoid haemorrhage, sacrificed at 24 h (SAH-inhibition group). Mean brain water content, and EMMPRIN mRNA and protein levels, were determined. RESULTS Compared with the sham group, mean brain water content, EMMPRIN mRNA and protein levels in the SAH-12, SAH-24 and SAH-72 groups increased rapidly and significantly (maximal at 24 h). EMMPRIN inhibition significantly reduced mean brain water content and EMMPRIN mRNA and protein levels in the SAH-inhibition group, compared with the SAH-24 group. CONCLUSIONS EMMPRIN upregulation may be important in the formation of brain oedema; inhibition of EMMPRIN activity may provide a potential approach to reduce oedema after subarachnoid haemorrhage.
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Affiliation(s)
- Y Tu
- Experimental Surgery Department, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
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