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Wang P, Huang B, Liu Y, Tan X, Liu L, Zhang B, Li Z, Kang L, Hu L. Corynoline protects chronic pancreatitis via binding to PSMA2 and alleviating pancreatic fibrosis. J Gastroenterol 2024:10.1007/s00535-024-02145-4. [PMID: 39145797 DOI: 10.1007/s00535-024-02145-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/01/2024] [Accepted: 08/07/2024] [Indexed: 08/16/2024]
Abstract
BACKGROUND Pancreatic fibrosis is the main pathological feature of chronic pancreatitis. There is a lack of medications that effectively alleviate or reverse pancreatic fibrosis and thus cure chronic pancreatitis. METHODS We screened drugs that could alleviate pancreatic fibrosis from 80 traditional Chinese medicine monomers and verified their efficacy and mechanisms. RESULTS We preliminarily identified corynoline as an antifibrotic candidate by drug screening among 80 compounds. In vitro, corynoline dose-dependently reduces collagen I synthesis in pancreatic stellate cells induced by TGF-β1 and inhibits its activation. Furthermore, we found that corynoline could alleviate the morphological disruption, such as acinar cell atrophy, collagen deposition etc., as well as reduced pancreatic weight in mice with chronic pancreatitis. We further validated the antifibrotic effect of corynoline in mRNA and protein levels. We also found that corynoline could inhibit NF-κB signaling pathway in vitro and in vivo. Next, we identified PSMA2 as the binding protein of corynoline by Lip-SMap and validated it using DARTS. Moreover, the siRNA of PSMA2 disrupts the anti-fibrotic effect of corynoline. CONCLUSION In conclusion, corynoline is a promising agent for the treatment of pancreatic fibrosis and chronic pancreatitis.
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Affiliation(s)
- Pengyuan Wang
- Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai, 200433, China
- Department of Gastroenterology, The 981st Hospital of PLA, Chengde, 067000, Hebei, China
- Shanghai Institute of Pancreatic Diseases, Shanghai, 200433, China
| | - Bangwei Huang
- Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai, 200433, China
- Shanghai Institute of Pancreatic Diseases, Shanghai, 200433, China
| | - Yu Liu
- Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai, 200433, China
- Shanghai Institute of Pancreatic Diseases, Shanghai, 200433, China
- Department of Gastroenterology, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, 210000, Jiangsu, China
- Department of Pharmacology, College of Pharmacy, Naval Medical University, Shanghai, 200433, China
| | - Xin Tan
- Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai, 200433, China
- Shanghai Institute of Pancreatic Diseases, Shanghai, 200433, China
| | - Libo Liu
- Department of Gastroenterology, The 981st Hospital of PLA, Chengde, 067000, Hebei, China
| | - Baoru Zhang
- Department of Gastroenterology, The 981st Hospital of PLA, Chengde, 067000, Hebei, China
| | - Zhaoshen Li
- Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai, 200433, China
- Shanghai Institute of Pancreatic Diseases, Shanghai, 200433, China
| | - Le Kang
- Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai, 200433, China.
- Shanghai Institute of Pancreatic Diseases, Shanghai, 200433, China.
| | - Lianghao Hu
- Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai, 200433, China.
- Shanghai Institute of Pancreatic Diseases, Shanghai, 200433, China.
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Wang R, Su D, Liu Y, Huang H, Qiu J, Cao Z, Yang G, Chen H, Luo W, Tao J, Weng G, Zhang T. The NF-κB/NUAK2 signaling axis regulates pancreatic cancer progression by targeting SMAD2/3. iScience 2024; 27:109406. [PMID: 38510132 PMCID: PMC10951638 DOI: 10.1016/j.isci.2024.109406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 01/13/2024] [Accepted: 02/29/2024] [Indexed: 03/22/2024] Open
Abstract
Nuclear factor kappa B (NF-κB) plays a pivotal role in the development of pancreatic cancer, and its phosphorylation has previously been linked to the regulation of NUAK2. However, the regulatory connection between NF-κB and NUAK2, as well as NUAK2's role in pancreatic cancer, remains unclear. In this study, we observed that inhibiting NUAK2 impeded the proliferation, migration, and invasion of pancreatic cancer cells while triggering apoptosis. NUAK2 overexpression partially resisted apoptosis and reversed the inhibitory effects of the NF-κB inhibitor. NF-κB transcriptionally regulated NUAK2 transcription by binding to the promoter region of NUAK2. Mechanistically, NUAK2 knockdown remarkably reduced the expression levels of p-SMAD2/3 and SMAD2/3, resulting in decreased nuclear translocation of SMAD4. In SMAD4-negative cells, NUAK2 knockdown impacted FAK signaling by downregulating SMAD2/3. Moreover, NUAK2 knockdown heightened the sensitivity of pancreatic cancer cells to gemcitabine, suggesting that NUAK2 inhibitors could be a promising strategy for pancreatic cancer treatment.
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Affiliation(s)
- Ruobing Wang
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Dan Su
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Yueze Liu
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Hua Huang
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Jiangdong Qiu
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Zhe Cao
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Gang Yang
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Hao Chen
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Wenhao Luo
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Jinxin Tao
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Guihu Weng
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Taiping Zhang
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
- Clinical Immunology Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
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Yang J, Ouedraogo SY, Wang J, Li Z, Feng X, Ye Z, Zheng S, Li N, Zhan X. Clinically relevant stratification of lung squamous carcinoma patients based on ubiquitinated proteasome genes for 3P medical approach. EPMA J 2024; 15:67-97. [PMID: 38463626 PMCID: PMC10923771 DOI: 10.1007/s13167-024-00352-w] [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: 12/03/2023] [Accepted: 01/30/2024] [Indexed: 03/12/2024]
Abstract
Relevance The proteasome is a crucial mechanism that regulates protein fate and eliminates misfolded proteins, playing a significant role in cellular processes. In the context of lung cancer, the proteasome's regulatory function is closely associated with the disease's pathophysiology, revealing multiple connections within the cell. Therefore, studying proteasome inhibitors as a means to identify potential pathways in carcinogenesis and metastatic progression is crucial in in-depth insight into its molecular mechanism and discovery of new therapeutic target to improve its therapy, and establishing effective biomarkers for patient stratification, predictive diagnosis, prognostic assessment, and personalized treatment for lung squamous carcinoma in the framework of predictive, preventive, and personalized medicine (PPPM; 3P medicine). Methods This study identified differentially expressed proteasome genes (DEPGs) in lung squamous carcinoma (LUSC) and developed a gene signature validated through Kaplan-Meier analysis and ROC curves. The study used WGCNA analysis to identify proteasome co-expression gene modules and their interactions with the immune system. NMF analysis delineated distinct LUSC subtypes based on proteasome gene expression patterns, while ssGSEA analysis quantified immune gene-set abundance and classified immune subtypes within LUSC samples. Furthermore, the study examined correlations between clinicopathological attributes, immune checkpoints, immune scores, immune cell composition, and mutation status across different risk score groups, NMF clusters, and immunity clusters. Results This study utilized DEPGs to develop an eleven-proteasome gene-signature prognostic model for LUSC, which divided samples into high-risk and low-risk groups with significant overall survival differences. NMF analysis identified six distinct LUSC clusters associated with overall survival. Additionally, ssGSEA analysis classified LUSC samples into four immune subtypes based on the abundance of immune cell infiltration with clinical relevance. A total of 145 DEGs were identified between high-risk and low-risk score groups, which had significant biological effects. Moreover, PSMD11 was found to promote LUSC progression by depending on the ubiquitin-proteasome system for degradation. Conclusions Ubiquitinated proteasome genes were effective in developing a prognostic model for LUSC patients. The study emphasized the critical role of proteasomes in LUSC processes, such as drug sensitivity, immune microenvironment, and mutation status. These data will contribute to the clinically relevant stratification of LUSC patients for personalized 3P medical approach. Further, we also recommend the application of the ubiquitinated proteasome system in multi-level diagnostics including multi-omics, liquid biopsy, prediction and targeted prevention of chronic inflammation and metastatic disease, and mitochondrial health-related biomarkers, for LUSC 3PM practice. Supplementary Information The online version contains supplementary material available at 10.1007/s13167-024-00352-w.
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Affiliation(s)
- Jingru Yang
- Medical Science and Technology Innovation Center, Shandong Key Laboratory of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, Shandong 250117 People's Republic of China
| | - Serge Yannick Ouedraogo
- Medical Science and Technology Innovation Center, Shandong Key Laboratory of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, Shandong 250117 People's Republic of China
| | - Jingjing Wang
- Department of Pathology, Shandong Cancer Hospital and Institute, Shandong First Medical University, 440 Jiyan Road, Jinan, Shandong 250117 People's Republic of China
| | - Zhijun Li
- Medical Science and Technology Innovation Center, Shandong Key Laboratory of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, Shandong 250117 People's Republic of China
| | - Xiaoxia Feng
- Medical Science and Technology Innovation Center, Shandong Key Laboratory of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, Shandong 250117 People's Republic of China
| | - Zhen Ye
- Medical Science and Technology Innovation Center, Shandong Key Laboratory of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, Shandong 250117 People's Republic of China
- School of Basic Medicine, Shandong First Medical University, 6699 Qingdao Road, Jinan, Shandong 250117 People's Republic of China
| | - Shu Zheng
- Medical Science and Technology Innovation Center, Shandong Key Laboratory of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, Shandong 250117 People's Republic of China
| | - Na Li
- Medical Science and Technology Innovation Center, Shandong Key Laboratory of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, Shandong 250117 People's Republic of China
| | - Xianquan Zhan
- Medical Science and Technology Innovation Center, Shandong Key Laboratory of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, Shandong 250117 People's Republic of China
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Zhou W, Feng Y, Lin C, CHAO CK, He Z, Zhao S, Xue J, Zhao X, Cao W. Yin Yang 1-Induced Long Noncoding RNA DUXAP9 Drives the Progression of Oral Squamous Cell Carcinoma by Blocking CDK1-Mediated EZH2 Degradation. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2207549. [PMID: 37401236 PMCID: PMC10477890 DOI: 10.1002/advs.202207549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 04/04/2023] [Indexed: 07/05/2023]
Abstract
LncRNAs play a critical role in oral squamous cell carcinoma (OSCC) progression. However, the function and detailed molecular mechanism of most lncRNAs in OSCC are not fully understood. Here, a novel nuclear-localized lncRNA, DUXAP9 (DUXAP9), that is highly expressed in OSCC is identified. A high level of DUXAP9 is positively associated with lymph node metastasis, poor pathological differentiation, advanced clinical stage, worse overall survival, and worse disease-specific survival in OSCC patients. Overexpression of DUXAP9 significantly promotes OSCC cell proliferation, migration, invasion, and xenograft tumor growth and metastasis, and upregulates N-cadherin, Vimentin, Ki67, PCNA, and EZH2 expression and downregulates E-cadherin in vitro and in vivo, whereas knockdown of DUXAP9 remarkably suppresses OSCC cell proliferation, migration, invasion, and xenograft tumor growth in vitro and in vivo in an EZH2-dependent manner. Yin Yang 1 (YY1) is found to activate the transcriptional expression of DUXAP9 in OSCC. Furthermore, DUXAP9 physically interacts with EZH2 and inhibits EZH2 degradation via the suppression of EZH2 phosphorylation, thereby blocking EZH2 translocation from the nucleus to the cytoplasm. Thus, DUXAP9 can serve as a promising target for OSCC therapy.
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Affiliation(s)
- Wenkai Zhou
- Department of Oral and Maxillofacial & Head and Neck OncologyShanghai Ninth People's HospitalCollege of StomatologyShanghai Jiao Tong University School of MedicineShanghai200011China
- National Center for StomatologyNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of StomatologyShanghai200011China
| | - Yisheng Feng
- National Center for StomatologyNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of StomatologyShanghai200011China
| | - Chengzhong Lin
- National Center for StomatologyNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of StomatologyShanghai200011China
- The 2nd Dental CenterShanghai Ninth People's HospitalCollege of StomatologyShanghai Jiao Tong University School of MedicineCollege of StomatologyShanghai Jiao Tong UniversityShanghai200011China
| | - Chi Kuan CHAO
- National Center for StomatologyNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of StomatologyShanghai200011China
| | - Ziqi He
- National Center for StomatologyNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of StomatologyShanghai200011China
| | - Shiyao Zhao
- National Center for StomatologyNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of StomatologyShanghai200011China
| | - Jieyuan Xue
- Department of CardiologyShanghai Chest HospitalShanghai Jiao Tong UniversityShanghai200030China
| | - Xu‐Yun Zhao
- Department of Biochemistry and Molecular Cell BiologyShanghai Key Laboratory for Tumor Microenvironment and InflammationKey Laboratory of Cell Differentiation and Apoptosis of the Chinese Ministry of EducationShanghai Jiao Tong University School of MedicineShanghai200025China
| | - Wei Cao
- Department of Oral and Maxillofacial & Head and Neck OncologyShanghai Ninth People's HospitalCollege of StomatologyShanghai Jiao Tong University School of MedicineShanghai200011China
- National Center for StomatologyNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of StomatologyShanghai200011China
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Is Curcumine Useful in the Treatment and Prevention of the Tendinopathy and Myotendinous Junction Injury? A Scoping Review. Nutrients 2023; 15:nu15020384. [PMID: 36678255 PMCID: PMC9860696 DOI: 10.3390/nu15020384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 01/04/2023] [Accepted: 01/10/2023] [Indexed: 01/15/2023] Open
Abstract
Physical activity in general and sports in particular, is a mechanism that produces stress and generates great force in the tendon and in the muscle-tendon unit, which increases the risk of injury (tendinopathies). Eccentric and repetitive contraction of the muscle precipitates persistent microtraumatism in the tendon unit. In the development of tendinopathies, the cellular process includes inflammation, apoptosis, vascular, and neuronal changes. Currently, treatments with oral supplements are frequently used. Curcumin seems to preserve, and even repair, damaged tendons. In this systematic review, we focus more especially on the benefits of curcumin. The biological actions of curcumin are diverse, but act around three systems: (a) inflammatory, (b) nuclear factor B (NF-κB) related apoptosis pathways, and (c) oxidative stress systems. A bibliographic search is conducted under the guidelines of the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) as a basis for reporting reliable systematic reviews to perform a Scoping review. After analysing the manuscripts, we can conclude that curcumin is a product that demonstrates a significant biological antialgic, anti-inflammatory, and antioxidant power. Therefore, supplementation has a positive effect on the inflammatory and regenerative response in tendinopathies. In addition, curcumin decreases and modulates the cell infiltration, activation, and maturation of leukocytes, as well as the production of pro-inflammatory mediators at the site of inflammation.
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Wu YQ, Tong T. Curcumae Rhizoma: A botanical drug against infectious diseases. Front Pharmacol 2023; 13:1015098. [PMID: 36703758 PMCID: PMC9871392 DOI: 10.3389/fphar.2022.1015098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 12/22/2022] [Indexed: 01/11/2023] Open
Abstract
Curcumae Rhizoma is the dry rhizome coming from Curcuma longa L. which grow widely in tropical south and southwest Asia. It has been used to treat conditions such as dermatoses, infections, stress, and depression. Moreover, in China, Curcumae Rhizoma and its active constituents have been made into different pharmaceutical preparations. Growing evidence suggests that these preparations can exert antioxidant, anti-inflammatory, and anti-cancer effects, which may play crucial roles in the treatment of various diseases, including cancer, infectious-, autoimmune-, neurological-, and cardiovascular diseases, as well as diabetes. The anti-infective effect of Curcumae Rhizoma has become a popular field of research around the world, including for the treatment of COVID-19, influenza virus, hepatitis B virus, human immunodeficiency virus, and human papilloma virus, among others. In this paper, the basic characteristics of Curcumae Rhizoma and its active constituents are briefly introduced, and we also give an overview on their applications and mechanisms in infectious diseases.
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Huang Q, Zhang Y, Zheng Y, Yang H, Yang Y, Mo Y, Li L, Zhang H. Molecular Mechanism of Curcumin and Its Analogs as Multifunctional Compounds against Pancreatic Cancer. Nutr Cancer 2022; 74:3096-3108. [PMID: 35583289 DOI: 10.1080/01635581.2022.2071451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 03/30/2022] [Accepted: 04/25/2022] [Indexed: 12/24/2022]
Abstract
Pancreatic cancer (PC) is one of the most common malignant tumors with a poor prognosis and high mortality. Surgical resection is the most effective treatment for PC; however, only a minority of patients have resectable tumors. Chemotherapy is the primary treatment for PC. Curcumin is a natural chemical substance obtained from plants with a wide range of pharmacological activities. Research evidence suggests that curcumin can influence PC development through multiple molecular mechanisms. The synthesis of novel curcumin analogs and preparation of curcumin nano-formulations are effective strategies to overcome the low bioavailability of curcumin in the treatment of PC. This review aims to summarize the mechanisms of action of curcumin in preclinical and clinical studies on PC and research progress in enhancing its bioavailability.
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Affiliation(s)
- Qun Huang
- Department of Ophthalmology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Ya Zhang
- Endocrinology Department, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yanlin Zheng
- Department of Ophthalmology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Hongjing Yang
- Department of Respiratory Medicine, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yang Yang
- Department of Respiratory Medicine, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Ya Mo
- Department of Ophthalmology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Liuying Li
- Department of Integrated Chinese and Western Medicine, The First People's Hospital of Zigong City, Zigong, China
| | - Hong Zhang
- Emergency Department, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
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Cui Z, Sun S, Li J, Li J, Sha T, He J, Zuo L. UBE2L3 promotes squamous cell carcinoma progression in the oral cavity and hypopharynx via activating the NF‐κB signaling by increasing IκBα degradation. Cell Biol Int 2022; 46:806-818. [PMID: 35128752 DOI: 10.1002/cbin.11772] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 01/04/2022] [Accepted: 01/22/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Zhi Cui
- The Third Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Jilin UniversityChangchunJilinChina
| | - Shiqun Sun
- Department of Prosthodontics, Hospital of Stomatology, Jilin UniversityChangchunJilinChina
| | - Jia Li
- Department of Oral and Maxillofacial Surgery Clinic, Hospital of Stomatology, Jilin UniversityChangchunJilinChina
| | - Jianing Li
- Department of Endodontics, Hospital of Stomatology, Jilin UniversityChangchunJilinChina
| | - Tong Sha
- The Third Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Jilin UniversityChangchunJilinChina
| | - Jie He
- Department of Dental Implantology, Hospital of Stomatology, Jilin UniversityChangchunJilinChina
| | - Linjing Zuo
- Department of Pedodontics, Hospital of Stomatology, Jilin UniversityChangchunJilinChina
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Sivakumar M, Yoithapprabhunath TR, Nirmal RM, Veeravarmal V, Dineshshankar J, Amsaveni R. Immunohistochemical analysis of Nuclear Factor-kappa B (NF-κB) between follicular and plexiform ameloblastomas: A pilot study. J Oral Maxillofac Pathol 2021; 24:466-471. [PMID: 33967482 PMCID: PMC8083443 DOI: 10.4103/jomfp.jomfp_150_20] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Revised: 08/13/2020] [Accepted: 09/04/2020] [Indexed: 12/04/2022] Open
Abstract
Background: Ameloblastoma among benign tumors holds a unique position by its locally destructive and invasive nature. Tumors that originate from the odontogenic apparatus or its remnants in the jaws show diverse clinical presentations, behavior and histologic patterns. The differed biological behavior behind follicular and plexiform ameloblastomas has never attained completeness because of the lack of rhythmic correlation regarding the exact mechanism. Nuclear factor-kappa B (NF-κB) pathways play a crucial role in survival, death and differentiation during physiologic and pathologic conditions. With this background, the study has been aimed to investigate the expression of NF-κB in follicular and plexiform ameloblastomas. Objective: The objective of this study was to analyze the immunohistochemical expression pattern of NF-κB in ameloblastoma and to compare the immunohistochemical expression pattern of NF-κB among the histological types of ameloblastoma, follicular and plexiform patterns. Methodology: Total 20 ameloblastomas (10 follicular, 10 plexiform) were immunostained with antihuman NF-κB p65 mouse IgG monoclonal antibody, and the pattern of staining is statistically analyzed using Chi-square test with the level of significance (P < 0.05). Results: Twelve (3 follicular, 9 plexiform) out of 20 ameloblastomas showed immunoreactivity to NF-κB p65. In ameloblastoma, only the peripheral preameloblast-like tall columnar cells showed reactivity, whereas the stellate reticulum-like cells are immunonegative. The staining pattern was membranous in the immunoreactive cells. The results were studied with the associated and inducing pathways from the literature, and a possible mechanism has been proposed. Conclusion: The expression pattern of NF-κB was found to be higher in plexiform ameloblastoma than follicular ameloblastoma.
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Affiliation(s)
- Muniapillai Sivakumar
- Department of Oral and Maxillofacial Pathology, Madha Dental College and Hospital, Chennai, Tamil Nadu, India
| | | | - Ramadas Madhavan Nirmal
- Department of Oral and Maxillofacial Pathology, Rajah Muthiah Dental College and Hospital, Chidambaram, Tamil Nadu, India
| | - Veeran Veeravarmal
- Department of Oral and Maxillofacial Pathology, Rajah Muthiah Dental College and Hospital, Chidambaram, Tamil Nadu, India
| | - Janardhanam Dineshshankar
- Department of Oral and Maxillofacial Pathology, Vivekanandha Dental College for Women, Namakkal, Tamil Nadu, India
| | - Ramamoorthy Amsaveni
- Department of Oral and Maxillofacial Pathology, Rajah Muthiah Dental College and Hospital, Chidambaram, Tamil Nadu, India
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Mu W, Cheng X, Zhang X, Liu Y, Lv Q, Liu G, Zhang J, Li X. Hinokiflavone induces apoptosis via activating mitochondrial ROS/JNK/caspase pathway and inhibiting NF-κB activity in hepatocellular carcinoma. J Cell Mol Med 2020; 24:8151-8165. [PMID: 32519392 PMCID: PMC7348176 DOI: 10.1111/jcmm.15474] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 05/07/2020] [Accepted: 05/12/2020] [Indexed: 01/01/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is the sixth most common malignancy with limited treatment options. Hinokiflavone (HF), a natural biflavonoid, has shown to inhibit the proliferation of melanoma, whereas its antitumour effect against HCC and the underlying mechanisms remain elusive. Here, we aimed at evaluating its antitumour effect against HCC in both in vitro and in vivo. Cell counting kit 8, colony formation assay, PI/RNase staining and Western blotting revealed that HF inhibited the proliferation of HCC cells via G0/G1 cell cycle arrest with p21/p53 up-regulation. DAPI staining, Annexin V-FITC/PI staining and Western blotting confirmed that HF triggered caspase-dependent apoptosis. Moreover, HF increased the levels of mitochondrial reactive oxygen species (mtROS) and activated c-Jun N-terminal kinase (JNK) pathway, as measured by MitoSOX Red staining and Western blotting. After respectively inhibiting mtROS (Mito-TEMPO) and JNK (SP600125), HF-induced apoptosis was reversed. Additionally, Western blotting documented that HF suppressed nuclear factor kappa B (NF-κB) activity and the anti-apoptotic genes downstream, contributing to cell apoptosis. Finally, in vivo studies demonstrated that HF significantly impaired tumour growth in HCC xenograft. Collectively, these findings suggested that HF induced apoptosis through activating mtROS/JNK/caspase pathway and inhibiting NF-κB signalling, which may represent a novel therapeutic agent for treating HCC.
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Affiliation(s)
- Wan Mu
- Department of Pharmacy, Shanghai Eye Diseases Prevention and Treatment Center/Shanghai Eye Hospital, Shanghai General Hospital, National Clinical Research Center for Eye Diseases, Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai Engineering Center for Visual Science and Photomedicine, Shanghai engineering research center of precise diagnosis and treatment of eye diseases, Shanghai, China
| | - Xuefang Cheng
- Department of Clinical Pharmacy, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xue Zhang
- Department of Clinical Pharmacy, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ying Liu
- Department of Pharmacy, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Qianzhou Lv
- Department of Pharmacy, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Gaolin Liu
- Department of Pharmacy, Shanghai Eye Diseases Prevention and Treatment Center/Shanghai Eye Hospital, Shanghai General Hospital, National Clinical Research Center for Eye Diseases, Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai Engineering Center for Visual Science and Photomedicine, Shanghai engineering research center of precise diagnosis and treatment of eye diseases, Shanghai, China
| | - Jigang Zhang
- Department of Clinical Pharmacy, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaoyu Li
- Department of Pharmacy, Zhongshan Hospital, Fudan University, Shanghai, China
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Pore-forming toxins from sea anemones: from protein-membrane interaction to its implications for developing biomedical applications. ADVANCES IN BIOMEMBRANES AND LIPID SELF-ASSEMBLY 2020. [DOI: 10.1016/bs.abl.2020.02.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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12
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Fan Y, Li J, Wei W, Fang H, Duan Y, Li N, Zhang Y, Yu J, Wang J. Ku80 gene knockdown by the CRISPR/Cas9 technique affects the biological functions of human thyroid carcinoma cells. Oncol Rep 2019; 42:2486-2498. [PMID: 31578590 PMCID: PMC6826323 DOI: 10.3892/or.2019.7348] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 08/19/2019] [Indexed: 12/23/2022] Open
Abstract
In the present study, to evaluate the role of Ku80 in thyroid carcinoma (TC), 86 thyroid tissue samples from patients with a spectrum of thyroid disorders were examined for protein levels of Ku80, nuclear factor-κB (NF-κB) and RET/TC by immunohistochemistry. Furthermore, in TC cells, Ku80 mRNA was detected by reverse transcription-quantitative PCR analysis and silenced using the clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein 9 (Cas9) technique to assess its role. An antibody array was used to identify Ku80-related regulatory genes. The protein levels of Ku80 in the TC tissues were significantly higher than those in non-neoplastic adjacent tissue samples (P<0.01). The activation of NF-kB and expression of RET/TC in the TC group were significantly increased (P<0.05) and were correlated with the protein expression of Ku80 (P<0.05). In papillary TC cells, the mRNA levels of Ku80 were high; Ku80 knockdown resulted in reductions in proliferation, invasion and colony formation, increased apoptosis, and reduced levels of proteins involved in MAPK signaling, cell proliferation and apoptosis. The high expression of Ku80 in TC was found to be associated with the expression of RET/TC and activation of NF-κB, and Ku80 knockdown decreased the malignancy of TC cells.
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Affiliation(s)
- Yali Fan
- Department of Respiratory Medicine, Xi'an Central Hospital, The Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710003, P.R. China
| | - Jianying Li
- Department of Respiratory Medicine, Xi'an Central Hospital, The Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710003, P.R. China
| | - Wei Wei
- Department of Pathology, Xi'an No. 3 Hospital, The Affiliated Hospital of Northwest University, Xi'an, Shaanxi 710018, P.R. China
| | - Hangrong Fang
- Department of Pathology, Xi'an No. 3 Hospital, The Affiliated Hospital of Northwest University, Xi'an, Shaanxi 710018, P.R. China
| | - Ying Duan
- Department of Pathology, Xi'an No. 3 Hospital, The Affiliated Hospital of Northwest University, Xi'an, Shaanxi 710018, P.R. China
| | - Namiao Li
- Department of Respiratory Medicine, Xi'an Central Hospital, The Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710003, P.R. China
| | - Yingying Zhang
- Department of Respiratory Medicine, Xi'an Central Hospital, The Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710003, P.R. China
| | - Jun Yu
- Department of Emergency, Xi'an Central Hospital, The Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710003, P.R. China
| | - Juanhong Wang
- Department of Pathology, Xi'an No. 3 Hospital, The Affiliated Hospital of Northwest University, Xi'an, Shaanxi 710018, P.R. China
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Sun X, Ng TTH, Sham KWY, Zhang L, Chan MTV, Wu WKK, Cheng CHK. Bufalin, a Traditional Chinese Medicine Compound, Prevents Tumor Formation in Two Murine Models of Colorectal Cancer. Cancer Prev Res (Phila) 2019; 12:653-666. [PMID: 31431500 DOI: 10.1158/1940-6207.capr-19-0134] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 06/24/2019] [Accepted: 08/16/2019] [Indexed: 12/24/2022]
Abstract
Chemoprevention is cost-effective for colorectal cancer when targeted at intermediate- or high-risk populations. Bufalin is a cardiac glycoside extracted from the traditional Chinese medicine (TCM) "Chan Su," which has been used as an anticancer agent. On the basis of the relative safety of bufalin, we investigated whether bufalin could act as a chemoprophylactic agent to prevent colon tumorigenesis in two murine models, namely colitis-associated colorectal cancer and Apc germline mutation-developed colorectal cancer. Our results revealed that long-term (12-16 weeks) administration of low-dose bufalin (0.5 mg/kg) effectively suppressed tumorigenesis in both colorectal cancer models, accompanied by attenuated epithelial cell proliferation (reduced bromodeoxyuridine incorporation, lower levels of cyclin A, cyclin D1, cyclin E, and cyclin-dependent kinases-2/4, and higher levels of p21 and p27) and promoted apoptosis (increased TUNEL positivity and caspase-3/9 cleavages, reduced levels of Bcl-2, Bcl-xL and survivin, and increased levels of Bax and Bak). Bufalin also suppressed the expression of proinflammatory mediators [reduced levels of cyclooxygenase-2, tumor TNFα, IL1β, IL6, C-X-C motif chemokine ligand (CXCL)-1, CXCL-2, and CXCL-5] in the colitis-associated colorectal cancer model. These effects were associated with the inhibition of oncogenic NF-κB and PI3K/Akt pathways. Our findings unveil a novel chemoprophylactic action of bufalin in colorectal cancer in vivo and provided efficacy data and mechanistic evidence for further clinical evaluation of this TCM compound for colorectal cancer chemoprevention in individuals at risk of colorectal cancer.
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Affiliation(s)
- Xiao Sun
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong
| | - Tony T H Ng
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong
| | - Kathy W Y Sham
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong
| | - Lin Zhang
- State Key Laboratory of Digestive Diseases, Institute of Digestive Diseases and LKS Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong.,Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong, Hong Kong
| | - Matthew T V Chan
- Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong, Hong Kong
| | - William K K Wu
- State Key Laboratory of Digestive Diseases, Institute of Digestive Diseases and LKS Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong. .,Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong, Hong Kong.,CUHK Shenzhen Research Institute, Shenzhen, China
| | - Christopher H K Cheng
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong. .,CUHK Shenzhen Research Institute, Shenzhen, China
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14
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Ginkgolide B enhances gemcitabine sensitivity in pancreatic cancer cell lines via inhibiting PAFR/NF-кB pathway. Biomed Pharmacother 2019; 109:563-572. [DOI: 10.1016/j.biopha.2018.10.084] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 10/14/2018] [Accepted: 10/14/2018] [Indexed: 12/15/2022] Open
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15
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Chauhan PS, Singh DK, Dash D, Singh R. Intranasal curcumin regulates chronic asthma in mice by modulating NF-ĸB activation and MAPK signaling. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2018; 51:29-38. [PMID: 30466625 DOI: 10.1016/j.phymed.2018.06.022] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 05/04/2018] [Accepted: 06/18/2018] [Indexed: 06/09/2023]
Abstract
BACKGROUND Curcumin, a natural product found in the plant Curcuma longa, has been reported to have diverse range of molecular targets that influence numerous biochemical and molecular cascades including anti-inflammatory and antioxidant properties. PURPOSE The aim of the study was to investigate the therapeutic potential of intranasal curcumin on ovalbumin (OVA)-induced chronic asthma and to elucidate underlying molecular mechanisms. STUDY DESIGN/METHOD Mice were sensitized and exposed to 2% OVA aerosol for 2 times in a week for five consecutive weeks to study effect of intranasal curcumin on various MAPK pathway enzymes involved in chronic asthma and its effect on the activation of nuclear factor kB (NF-kB). RESULTS Curcumin treatment decreased the ROS level in BALF and nitrite level in blood serum of chronic asthmatic mice. Curcumin treatment had significantly decreased the phosphorylation of JNK, ERK1/2, and p38 and COX-2 expression thereby nuclear factor κB (NF-κB) activation and expression in lung tissues. CONCLUSION These results suggest that intranasal curcumin protects against asthma via action on mitogen-activated protein kinase (MAPK)/NF-κB signaling pathways.
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Affiliation(s)
- Preeti S Chauhan
- Department of Zoology, MMV Unit, Banaras Hindu University, India
| | - D K Singh
- Department of Physics, Udai Pratap Autonomous College, Varanasi, India
| | - D Dash
- Department of Biochemistry, Institute of Medical Sciences Banaras Hindu University, Varanasi 221005, India
| | - Rashmi Singh
- Department of Zoology, MMV Unit, Banaras Hindu University, India.
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16
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Curcumin ameliorates the in vitro efficacy of carfilzomib in human multiple myeloma U266 cells targeting p53 and NF-κB pathways. Toxicol In Vitro 2017; 47:186-194. [PMID: 29223572 DOI: 10.1016/j.tiv.2017.12.001] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 12/01/2017] [Accepted: 12/04/2017] [Indexed: 12/13/2022]
Abstract
Multiple myeloma (MM) is a malignant B-cell neoplasm with accumulation of malignant plasma cells in bone marrow. Pharmacological therapy improves response frequency even if with various associated toxicities. Herein, we investigated if combination of curcumin with carfilzomib (CFZ) can induce a better cytotoxic effect on in vitro cultured U266 cells. Cell viability data showed that curcumin significantly ameliorates CFZ cytotoxic effect. Furthermore, curcumin alone did not affect proteasome at the tested dose, confirming the involvement of different mechanisms in the observed effects. U266 cells exposure to curcumin or CFZ increased reactive species (RS) levels, although their production did not appear further potentiated following drugs combination. Interestingly, NF-κB nuclear accumulation was reduced by treatment with CFZ or curcumin, and was more deeply decreased in cells treated with CFZ-curcumin combinations, very likely due to the different mechanisms through which they target NF-κB. Our results confirmed the induction of p53/p21 axis and G0/G1 cell cycle arrest in anticancer activities of both drugs, an effect more pronounced for the CFZ-curcumin tested combinations. Furthermore, curcumin addition enhanced CFZ proapoptotic effect. These findings evidence that curcumin can ameliorate CFZ efficacy, and lead us to hypothesize that this effect might be useful to optimize CFZ therapy in MM patients.
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KIF3A knockdown sensitizes bronchial epithelia to apoptosis and aggravates airway inflammation in asthma. Biomed Pharmacother 2017; 97:1349-1355. [PMID: 29156524 DOI: 10.1016/j.biopha.2017.10.160] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 10/24/2017] [Accepted: 10/28/2017] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND KIF3A expression was decreased in asthmatic child patients and animal. Impaired KIF3A expression resulted in increased Th2 inflammation in mice and apoptosis in renal tubular epithelium and photoreceptor cells. This work aimed to investigate the role of KIF3A in epithelium apoptosis and bronchial inflammation in asthma. METHODS After establishment of ovalbumin induced asthma, the mice were infected with KIF3A adenovirus through nasal cavity inhalation. KIF3A expression and apoptosis in epithelia of nasal mucosa and bronchia were determined using qRT-PCR, western blotting, immunohistochemistry and TUNEL staining. The mRNA expression of COX-2, IL-4, IL-5, IL-13, IL-6, IL-10 and TNF-α was also measured. In vitro, human bronchial epithelial cell line 16HBE 14o- was stimulated with IL-4, IL-13 and TNF-α, accompanied by KIF3A knockdown or overexpression using siRNA or KIF3A adenovirus respectively. Apoptosis, mRNA expression of CCL17, CCL26, IL-5 and IL-8, and protein expression of COX-2 and β-catenin were determined using flow cytometry, qRT-PCR and western blotting. RESULTS KIF3A expression was reduced in epithelia of nasal mucosa and bronchia of asthmatic mice, and overexpression of KIF3A ameliorated epithelial cell apoptosis and bronchial inflammation in asthmatic mice. In vitro, KIF3A knockdown significantly promoted epithelium apoptosis, facilitated the transcription of CCL17, CCL26, IL-5 and IL-8, and increased the protein levels of COX-2 and β-catenin translocation, whereas overexpression of KIF3A exhibited the opposite effect. CONCLUSION KIF3A plays an important role in epithelium apoptosis and bronchial inflammation in asthma, and may be a potential target for asthma treatment.
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18
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Ozer J, Fishman D, Eilam B, Golan-Goldhirsh A, Gopas J. Anti-Metastatic Effect of Semi-Purified Nuphar Lutea Leaf Extracts. J Cancer 2017. [PMID: 28638458 PMCID: PMC5479249 DOI: 10.7150/jca.18435] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Nuphar lutea L. SM., leaf and rhizome extracts (NUP), contain nupharidines as active components. Nupharidines belong to the sesquiterpene lactones class of a naturally occurring plant terpenoids. This family of compounds has gained considerable interest for treating infection, inflammation and cancer. NF-κB is a central, downstream regulator of inflammation, cell proliferation and apoptosis. In our previous work we demonstrated strong inhibition of NF-κB activity and induction of apoptosis by NUP. In addition, NUP exhibited anti-inflammatory properties and partial protection from LPS-induced septic shock by modulating ERK pathway and cytokine secretion in macrophages. In the present study, we examined the effect of NUP in a B16 melanoma experimental murine lung metastasis model and its ability to affect the ERK and NF-κB pathways in variety of cell lines. We showed that NUP and cisplatin combined treatment was synergistic and reduced the lung metastatic load. In addition NUP treatment inhibited TNFα-induced IκBα degradation and NF- κB nuclear translocation. We also observed that NUP induced ERK activation. Furthermore, ERK inhibition prevented NF-κB inactivation by NUP. Overall, our work implies that co-administration of NF-κB inhibitors such as NUP, with standard anti-cancer drugs, may act as "sensitizers" for more effective chemotherapy.
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Affiliation(s)
- Janet Ozer
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Daniel Fishman
- Department of Physiology and Cell Biology, Faculty of Health Sciences Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Brit Eilam
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Avi Golan-Goldhirsh
- The Jacob Blaustein Institutes for Desert Research (BIDR), French Associates Institute for Agriculture and Biotechnology of Drylands, Sede Boqer Campus 84990 Israel
| | - Jacob Gopas
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences Ben-Gurion University of the Negev, Beer Sheva, Israel.,Dept. of Oncology, Soroka University Medical Center, Beer Sheva, Israel
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19
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Kaplan GS, Torcun CC, Grune T, Ozer NK, Karademir B. Proteasome inhibitors in cancer therapy: Treatment regimen and peripheral neuropathy as a side effect. Free Radic Biol Med 2017; 103:1-13. [PMID: 27940347 DOI: 10.1016/j.freeradbiomed.2016.12.007] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Revised: 10/22/2016] [Accepted: 12/04/2016] [Indexed: 01/10/2023]
Abstract
Proteasomal system plays an important role in protein turnover, which is essential for homeostasis of cells. Besides degradation of oxidized proteins, it is involved in the regulation of many different signaling pathways. These pathways include mainly cell differentiation, proliferation, apoptosis, transcriptional activation and angiogenesis. Thus, proteasomal system is a crucial target for treatment of several diseases including neurodegenerative diseases, cystic fibrosis, atherosclerosis, autoimmune diseases, diabetes and cancer. Over the last fifteen years, proteasome inhibitors have been tested to highlight their mechanisms of action and used in the clinic to treat different types of cancer. Proteasome inhibitors are mainly used in combinational therapy along with classical chemo-radiotherapy. Several studies have proved their significant effects but serious side effects such as peripheral neuropathy, limits their use in required effective doses. Recent studies focus on peripheral neuropathy as the primary side effect of proteasome inhibitors. Therefore, it is important to delineate the underlying mechanisms of peripheral neuropathy and develop new inhibitors according to obtained data. This review will detail the role of proteasome inhibition in cancer therapy and development of peripheral neuropathy as a side effect. Additionally, new approaches to prevent treatment-limiting side effects will be discussed in order to help researchers in developing effective strategies to overcome side effects of proteasome inhibitors.
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Affiliation(s)
- Gulce Sari Kaplan
- Department of Biochemistry, School of Medicine/Genetic and Metabolic Diseases Research and Investigation Center, Marmara University, 34854 Maltepe, Istanbul, Turkey
| | - Ceyda Corek Torcun
- Department of Biochemistry, School of Medicine/Genetic and Metabolic Diseases Research and Investigation Center, Marmara University, 34854 Maltepe, Istanbul, Turkey
| | - Tilman Grune
- Department for Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), Nuthetal, Germany
| | - Nesrin Kartal Ozer
- Department of Biochemistry, School of Medicine/Genetic and Metabolic Diseases Research and Investigation Center, Marmara University, 34854 Maltepe, Istanbul, Turkey
| | - Betul Karademir
- Department of Biochemistry, School of Medicine/Genetic and Metabolic Diseases Research and Investigation Center, Marmara University, 34854 Maltepe, Istanbul, Turkey.
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20
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Enomoto A, Yamada J, Morita A, Miyagawa K. Bisdemethoxycurcumin enhances X-ray-induced apoptosis possibly through p53/Bcl-2 pathway. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2017; 815:1-5. [PMID: 28283087 DOI: 10.1016/j.mrgentox.2016.12.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Revised: 12/13/2016] [Accepted: 12/20/2016] [Indexed: 01/26/2023]
Abstract
Bisdemethoxycurcumin (BDMC), which is isolated from the rhizomes of Curcuma longa, has anti-inflammatory and anti-carcinogenic activities. Here we found that BDMC enhanced X-ray-induced apoptosis in human T-cell leukemia MOLT-4 cells. Knockdown of p53 significantly attenuated the radiosensitizing effect of BDMC. However, BDMC did not enhance X-ray-mediated activation of the p53 signaling pathway via p53's transactivation or mitochondrial translocation. On the other hand, BDMC promoted the X-ray-induced dephosphorylation at Ser 70 in Bcl-2's flexible loop regulatory domain and Bcl-2 binding to p53. Overexpressing Bcl-2 completely blocked the BDMC's radiosensitization effect. Our results indicate that BDMC stimulates the dephosphorylation and p53-binding activity of Bcl-2 and suggest that BDMC may induce a neutralization of Bcl-2's anti-apoptotic function, thereby enhancing X-ray-induced apoptosis.
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Affiliation(s)
- Atsushi Enomoto
- Laboratory of Molecular Radiology, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033, Japan.
| | - Junko Yamada
- Radiation Safety Office, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033, Japan
| | - Akinori Morita
- Department of Biomedical Science and Technology, Graduate School of Biomedical Sciences, Tokushima University, 3-18-15 Kuramotocho, Tokushima 770-8509, Japan
| | - Kiyoshi Miyagawa
- Laboratory of Molecular Radiology, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033, Japan
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21
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Chatterjee A, Debnath K, Rao NKH. A comparative evaluation of the efficacy of curcumin and chlorhexidine mouthrinses on clinical inflammatory parameters of gingivitis: A double-blinded randomized controlled clinical study. J Indian Soc Periodontol 2017; 21:132-137. [PMID: 29398858 PMCID: PMC5771110 DOI: 10.4103/jisp.jisp_136_17] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Aim: The aim of this study was to assess the efficacy of 0.1% curcumin mouthwash and to compare it with 0.2% chlorhexidine gluconate as an antiplaque agent and its effect on gingival inflammation. Materials and Methods: One hundred and fifty subjects, age between 20 and 30 years were recruited. Study population were randomly divided into three groups. In Group A, 50 subjects were advised the experimental mouthwash. Group B subjects used placebo mouthrinse, and chlorhexidine mouth wash was given to Group C. The subjects were advised to use 10 ml of mouthwash for 1 min twice a day 30 min after brushing. Parameters were recorded for plaque, gingival, and sulcus bleeding indices at day 0, 7, 14, and 28 days along with subjective assessment of taste. Results: On intragroup comparison between curcumin, chlorhexidine, and placebo mouthwash, the mean percentage reduction of the plaque index (PI) between 0 and 28 days were 0.58,0.57 and 1.17, respectively (P < 0.01), percentage reduction of gingival index (GI) between 0 and 28 days were 0.65, 0.66, and 1.09, respectively (P < 0.01) and sulcus bleeding index (SBI) showed a percentage reduction of 0.69, 0.66, and 1.13, respectively The intergroup comparison revealed chlorhexidine and curcumin mouthwash were statistically significant with P < 0.001 as compared to placebo. Conclusion: Curcumin mouthwash has shown an antiplaque and antigingivitis properties comparable to chlorhexidine mouthwash. Thus, curcumin mouthwash and chlorhexidine gluconate can be effectively used as an adjunct to scaling and root planning.
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Affiliation(s)
- Anirban Chatterjee
- Department of Periodontics and Implantology, Oxford Dental College, Bengaluru, Karnataka, India
| | - Koel Debnath
- Department of Periodontics and Implantology, Oxford Dental College, Bengaluru, Karnataka, India
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Yashiro M. Molecular Alterations of Colorectal Cancer with Inflammatory Bowel Disease. Dig Dis Sci 2015; 60:2251-63. [PMID: 25840920 DOI: 10.1007/s10620-015-3646-4] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 03/26/2015] [Indexed: 12/18/2022]
Abstract
Inflammatory bowel disease (IBD) is an important etiologic factor in the development of colorectal cancer (CRC). The risk of CRC begins to increase 8 or 10 years after the diagnosis of IBD. This type of cancer is called colitis-associated CRC (CA-CRC). The molecular pathogenesis of inflammatory epithelium might play a critical role in the development of CA-CRC. Genetic alterations detected in CA-CRC such as genetic mutations, microsatellite instability, and DNA hypermethylation are also recognized in sporadic CRC; however, there are differences in the timing and frequency of molecular events between CA-CRC and sporadic CRC. Interaction between gene-environmental factors, including inflammation, lifestyle, psychological stress, and prior appendectomy, might be associated with the etiopathology of IBD. The mucosal inflammatory mediators, such as oxidant stress, free radicals, and chemokines, may cause the genetic alterations. Understanding the molecular mechanisms of CA-CRC might be important to develop clinical efficacies for patients with IBD. This review discusses the molecular characteristics of CA-CRC, especially ulcerative colitis-associated CRC, including clinical features, signaling pathways, and interactions between genetic alterations and environment involved in inflammatory carcinogenesis.
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Affiliation(s)
- Masakazu Yashiro
- Department of Surgical Oncology, Oncology Institute of Geriatrics and Medical Science, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka, 545-8585, Japan,
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Han M, Li Z, Guo Y, Zhang J, Wang X. A nanoparticulate drug-delivery system for glaucocalyxin A: formulation, characterization, increased in vitro, and vivo antitumor activity. Drug Deliv 2015; 23:2457-2463. [PMID: 25715810 DOI: 10.3109/10717544.2015.1012311] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Glaucocalyxin A (GLA) is a phytochemical component with multiple pharmacological activities; however, glaucocalyxin A's wider use has been restricted by its poor solubility. In this study, GLA nanosuspensions were prepared with precipitation-combined ultrasonication and were characterized by dynamic light scattering (DLS), transmission electron microscope (TEM), and differential scanning calorimetry (DSC). The GLA nanosuspensions were spherical with a smooth surface and a small size of 143 nm, the drug payload achieved 8.95%, and the maximum GLA concentration reached 1 mg/mL. The lyophilized powders for the GLA nanosuspensions were amorphous and displayed a biphasic drug release pattern with an initial burst release and a consequent sustained release. In contrast to the free drug solution, GLA nanosuspensions showed higher in vitro antitumor activity against HepG2 cells (IC50 value of 1.793 versus 2.884 μg/mL at 24 h, p < 0.01). Meanwhile, nanosuspensions displayed better anticancer efficacy than free GLA on H22 bearing mice (54.11% versus 36.02% tumor inhibition rate). These results indicate that GLA nanosuspensions have great potential for the treatment of hepatic cancer.
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Affiliation(s)
- Meihua Han
- a Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College , Beijing , PR China
| | - Zhitao Li
- b School of Pharmacy, Heilongjiang University of Chinese Medicine , Harbin , PR China , and
| | - Yifei Guo
- a Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College , Beijing , PR China
| | - Jian Zhang
- c College of Pharmaceutical Sciences, Soochow University , Suzhou , PR China
| | - Xiangtao Wang
- a Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College , Beijing , PR China
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Uwagawa T, Yanaga K. Effect of NF-κB inhibition on chemoresistance in biliary-pancreatic cancer. Surg Today 2015; 45:1481-8. [PMID: 25673034 DOI: 10.1007/s00595-015-1129-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Accepted: 01/26/2015] [Indexed: 12/13/2022]
Abstract
Biliary cancer and pancreatic cancer are considered to be difficult diseases to cure. Although complete resection provides the only means of curing these cancers, the rate of resectability is not high. Therefore, chemotherapy is often selected in patients with advanced unresectable biliary-pancreatic cancer. Many combination chemotherapy regimens have been applied in clinical trials. However, the survival time is not satisfactory. On the other hand, most chemotherapeutic agents induce anti-apoptotic transcriptional factor nuclear factor kappa b (NF-κB) activation, and agent-induced NF-κB activation is deeply involved in the onset of chemoresistance. Recently, novel approaches to potentiating chemosensitivity in cases of biliary-pancreatic cancer using NF-κB inhibitors with cytotoxic agents have been reported, most of which comprise translational research, although some clinical trials have also been conducted. Nevertheless, to date, there is no breakthrough chemotherapy regimen for these diseases. As some reports show promising data, combination chemotherapy consisting of a NF-κB inhibitor with chemotherapeutic agents seems to improve chemosensitivity and prolong the survival time of biliary-pancreatic cancer patients.
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Affiliation(s)
- Tadashi Uwagawa
- Department of Surgery, The Jikei University School of Medicine, Tokyo, Japan.
| | - Katsuhiko Yanaga
- Department of Surgery, The Jikei University School of Medicine, Tokyo, Japan
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25
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Foersch S, Neurath MF. Colitis-associated neoplasia: molecular basis and clinical translation. Cell Mol Life Sci 2014; 71:3523-35. [PMID: 24830703 PMCID: PMC11113942 DOI: 10.1007/s00018-014-1636-x] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2013] [Revised: 04/07/2014] [Accepted: 04/28/2014] [Indexed: 02/07/2023]
Abstract
Crohn's disease and ulcerative colitis are both associated with an increased risk of inflammation-associated colorectal carcinoma. Colitis-associated cancer (CAC) is one of the most important causes for morbidity and mortality in patients with inflammatory bowel diseases (IBD). Colitis-associated neoplasia distinctly differs from sporadic colorectal cancer in its biology and the underlying mechanisms. This review discusses the molecular mechanisms of CAC and summarizes the most important genetic alterations and signaling pathways involved in inflammatory carcinogenesis. Then, clinical translation is evaluated by discussing new endoscopic techniques and their contribution to surveillance and early detection of CAC. Last, we briefly address different types of concepts for prevention (i.e., anti-inflammatory therapeutics) and treatment (i.e., surgical intervention) of CAC and give an outlook on this important aspect of IBD.
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Affiliation(s)
- Sebastian Foersch
- Department of Medicine 1, FAU Erlangen-Nürnberg, Ulmenweg 18, 91054, Erlangen, Germany,
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Sun B, Karin M. The therapeutic value of targeting inflammation in gastrointestinal cancers. Trends Pharmacol Sci 2014; 35:349-57. [PMID: 24881011 DOI: 10.1016/j.tips.2014.04.011] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2014] [Revised: 04/28/2014] [Accepted: 04/30/2014] [Indexed: 12/22/2022]
Abstract
Inflammation has been implicated in the initiation and progression of gastrointestinal (GI) cancers. Inflammation also plays important roles in subverting immune tolerance, escape from immune surveillance, and conferring resistance to chemotherapeutic agents. Targeting key regulators and mediators of inflammation represents an attractive strategy for GI cancer prevention and treatment. However, the targeting of inflammation in GI cancer is not straightforward and sometimes inflammation may contribute to tumor regression. We discuss the origins and effects of inflammation in GI cancer and how to target it successfully.
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Affiliation(s)
- Beicheng Sun
- Liver Transplantation Center of the First Affiliated Hospital and Cancer Center, Nanjing Medical University, Nanjing, Jiangsu Province, P.R. China.
| | - Michael Karin
- Laboratory of Gene Regulation and Signal Transduction, Department of Pharmacology and Pathology, Cancer Center, UCSD School of Medicine, La Jolla, CA 92093-0723, USA.
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Bone morphogenetic protein-7 antagonizes tumor necrosis factor-α-induced activation of nuclear factor κB and up-regulation of the ADAMTS, leading to decreased degradation of disc matrix macromolecules aggrecan and collagen II. Spine J 2014; 14:505-12. [PMID: 24176808 DOI: 10.1016/j.spinee.2013.08.016] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Revised: 07/23/2013] [Accepted: 08/20/2013] [Indexed: 02/03/2023]
Abstract
BACKGROUND CONTEXT Tumor necrosis factor-α (TNF-α) is a regulatory cytokine that can increase the activity of enzymes such as ADAMTS (a disintegrin and metalloproteinase with thrombospondin motifs), which degrade disc matrix. ADAMTS are enzymes that break down disc matrix and thereby mediate disc degeneration. Bone morphogenetic protein-7 (BMP-7), on the other hand, stimulates synthesis of the disc extracellular matrix and is a potential therapeutic molecule for the treatment of disc degeneration. However, the effects of BMP-7 on TNF-α and ADAMTS are unknown. PURPOSE We investigated the effects of BMP-7 on the catabolic regulators such as TNF-α and ADAMTS and evaluated the molecular mechanism by which BMP-7 affects the catabolic regulators. STUDY DESIGN This was an in vitro study in which we used human intervertebral disc cells cultured in alginate beads. METHODS Human intervertebral disc cells were cultured in alginate beads, and treated with TNF-α, or TNF- α plus BMP-7, pharmacological inhibitor of ERK1/2 (U0126), p38 (SB203580), or NFκB (BAY 11-7082). The mRNA levels of target genes were measured by real-time polymerase chain reaction, and the protein levels were determined by the Western blots. The nuclear factor (NF)κB activity was analyzed by measured phosphorylation and nuclear translocation of the NFκB protein p65. RESULTS TNF-α activated NFκB signaling and induced up-regulation of the catabolic regulators ADAMTS-4 and ADAMTS-5, contributing to degradation of the disc matrix macromolecules aggrecan and collagen II. BMP-7 antagonized the TNF-α-induced activation of NFκB protein p65 and blocked TNF-α-induced up-regulation of ADAMTS-4 and ADAMTS-5, leading to reversing TNF-α-mediated degradation of aggrecan and collagen II. Moreover, BMP-7 antagonized the TNF-α-induced activation of NFκB signaling by suppressing phosphorylation and nucleus translocation of NFκB protein p65. CONCLUSION BMP-7 antagonizes TNF-α-induced activation of NFκB and up-regulation of ADAMTS, leading to decreased degradation of disc matrix macromolecules. These data indicate that BMP-7 has a dual mechanism of action on disc metabolism: (1) the previously well-described positive effect on disc matrix synthesis and (2) an anticatabolic effect that is described here. This understanding is important as BMP-7 is being considered for treatment of disc degeneration.
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Tripathi V, Popescu NC, Zimonjic DB. DLC1 suppresses NF-κB activity in prostate cancer cells due to its stabilizing effect on adherens junctions. SPRINGERPLUS 2014; 3:27. [PMID: 24683532 PMCID: PMC3967735 DOI: 10.1186/2193-1801-3-27] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Accepted: 01/09/2014] [Indexed: 01/06/2023]
Abstract
DLC1 (Deleted in Liver Cancer 1) gene encodes a RhoGTPase-activating protein (RhoGAP), which exerts most of its tumor suppressor functions through suppression of small Rho GTPases proteins RhoA, RhoB, RhoC and to some degree Cdc42, but not Rac. RhoGTPases are implicated in NF-κB activation in highly invasive prostate carcinoma (PCA), with consequences on cell proliferation, survival and metastatic capacity. Here we demonstrate that DLC1 transduction in two androgen-independent (AI) and highly metastatic PCA cell lines negatively regulates NF-κB activity in a GAP- and α-catenin-dependent manner. Expressed DLC1 protein suppresses the phosphorylation of NF-κB inhibitor, IκBα, causes its relocation from membrane ruffles into cytoplasm and attenuates its ubiquitination and subsequent degradation. DLC1-mediated NF-kB suppression and its effects are comparable to NF-κB inhibition using either shRNA knockdown or peptide inhibitor. Expression of transduced DLC1 suppressed the expression of NF-κB mediated genes. Such effects were found to be reliant on presence of calcium, indicating that the observed modifications are dependent on, and enabled by DLC-mediated stabilization of adherens junctions. These results expand the multitude of DLC1 interactions with other genes that modulate its oncosuppressive function, and may have potential therapeutic implications.
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Affiliation(s)
- Veenu Tripathi
- Laboratory of Experimental Carcinogenesis, National Cancer Institute, National Institutes of Health, 37 Convent Drive, MSC 4262, Bethesda, Maryland 20892 USA
| | - Nicholas C Popescu
- Laboratory of Experimental Carcinogenesis, National Cancer Institute, National Institutes of Health, 37 Convent Drive, MSC 4262, Bethesda, Maryland 20892 USA
| | - Drazen B Zimonjic
- Laboratory of Experimental Carcinogenesis, National Cancer Institute, National Institutes of Health, 37 Convent Drive, MSC 4262, Bethesda, Maryland 20892 USA
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Lu Y, Jeong YT, Li X, Kim MJ, Park PH, Hwang SL, Son JK, Chang HW. Emodin Isolated from Polygoni cuspidati Radix Inhibits TNF-α and IL-6 Release by Blockading NF-κB and MAP Kinase Pathways in Mast Cells Stimulated with PMA Plus A23187. Biomol Ther (Seoul) 2014; 21:435-41. [PMID: 24404333 PMCID: PMC3879914 DOI: 10.4062/biomolther.2013.068] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Revised: 10/28/2013] [Accepted: 10/31/2013] [Indexed: 11/13/2022] Open
Abstract
Emodin, a naturally occurring anthraquinone derivative isolated from Polygoni cuspidati radix, has several beneficial pharmacologic effects, which include anti-cancer, anti-diabetic, and anti-inflammatory activities. In this study, the authors examined the effect of emodin on the production of proinflammatory cytokines, such as, tumor necrosis factor (TNF)-α and interleukin (IL)-6, in mouse bone marrow-derived mast cells (BMMCs) stimulated with phorbol 12-myristate 13-acetate (PMA) plus the calcium ionophore A23187. To investigate the mechanism responsible for the regulation of pro-inflammatory cytokine production by emodin, the authors assessed its effects on the activations of transcriptional factor nuclear factor-κB (NF-κB) and mitogen-activated protein kinases (MAPKs). Emodin attenuated the nuclear translocation of (NF)-κB p65 and its DNA-binding activity by reducing the phosphorylation and degradation of IκBα and the phosphorylation of IκB kinase B (IKK). Furthermore, emodin dose-dependently attenuated the phosphorylations of MAPKs, such as, extracellular signal-regulated kinase 1/2 (ERK1/2), p38 MAP kinase, and the stress-activated protein kinases (SAPK)/c-Jun-N-terminal kinase (JNK). Taken together, the findings of this study suggest that the anti-inflammatory effects of emodin on PMA plus A23187-stimulated BMMCs are mediated via the inhibition of NF-κB activation and of the MAPK pathway.
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Affiliation(s)
- Yue Lu
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China, College of Pharmacy, Yeungnam University, Gyeongsan 712-749, Republic of Korea ; College of Pharmacy, Yeungnam University, Gyeongsan 712-749, Republic of Korea
| | - Yong-Tae Jeong
- College of Pharmacy, Yeungnam University, Gyeongsan 712-749, Republic of Korea
| | - Xian Li
- College of Pharmacy, Yeungnam University, Gyeongsan 712-749, Republic of Korea
| | - Mi Jin Kim
- College of Pharmacy, Yeungnam University, Gyeongsan 712-749, Republic of Korea
| | - Pil-Hoon Park
- College of Pharmacy, Yeungnam University, Gyeongsan 712-749, Republic of Korea
| | - Seung-Lark Hwang
- College of Pharmacy, Yeungnam University, Gyeongsan 712-749, Republic of Korea
| | - Jong Keun Son
- College of Pharmacy, Yeungnam University, Gyeongsan 712-749, Republic of Korea
| | - Hyeun Wook Chang
- College of Pharmacy, Yeungnam University, Gyeongsan 712-749, Republic of Korea
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Kim H, Lee HJ, Oh Y, Choi SG, Hong SH, Kim HJ, Lee SY, Choi JW, Su Hwang D, Kim KS, Kim HJ, Zhang J, Youn HJ, Noh DY, Jung YK. The DUSP26 phosphatase activator adenylate kinase 2 regulates FADD phosphorylation and cell growth. Nat Commun 2014; 5:3351. [PMID: 24548998 PMCID: PMC3948464 DOI: 10.1038/ncomms4351] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Accepted: 01/30/2014] [Indexed: 01/16/2023] Open
Abstract
Adenylate kinase 2 (AK2), which balances adenine nucleotide pool, is a multi-functional protein. Here we show that AK2 negatively regulates tumour cell growth. AK2 forms a complex with dual-specificity phosphatase 26 (DUSP26) phosphatase and stimulates DUSP26 activity independently of its AK activity. AK2/DUSP26 phosphatase protein complex dephosphorylates fas-associated protein with death domain (FADD) and regulates cell growth. AK2 deficiency enhances cell proliferation and induces tumour formation in a xenograft assay. This anti-growth function of AK2 is associated with its DUSP26-stimulating activity. Downregulation of AK2 is frequently found in tumour cells and human cancer tissues showing high levels of phospho-FADD(Ser194). Moreover, reconstitution of AK2 in AK2-deficient tumour cells retards both cell proliferation and tumourigenesis. Consistent with this, AK2(+/-) mouse embryo fibroblasts exhibit enhanced cell proliferation with a significant alteration in phospho-FADD(Ser191). These results suggest that AK2 is an associated activator of DUSP26 and suppresses cell proliferation by FADD dephosphorylation, postulating AK2 as a negative regulator of tumour growth.
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Affiliation(s)
- Hyunjoo Kim
- School of Biological Science/Bio-Max Institute, Seoul National University, Gwanak-gu, Seoul 151-747, Korea
- These authors contributed equally to this work
| | - Ho-June Lee
- Department of Discovery Oncology, Genentech, Inc. 1 DNA Way, South San Francisco, California 94080, USA
- These authors contributed equally to this work
| | - Yumin Oh
- School of Biological Science/Bio-Max Institute, Seoul National University, Gwanak-gu, Seoul 151-747, Korea
| | - Seon-Guk Choi
- School of Biological Science/Bio-Max Institute, Seoul National University, Gwanak-gu, Seoul 151-747, Korea
| | - Se-Hoon Hong
- School of Biological Science/Bio-Max Institute, Seoul National University, Gwanak-gu, Seoul 151-747, Korea
| | - Hyo-Jin Kim
- Department of Discovery Oncology, Genentech, Inc. 1 DNA Way, South San Francisco, California 94080, USA
| | - Song-Yi Lee
- School of Biological Science/Bio-Max Institute, Seoul National University, Gwanak-gu, Seoul 151-747, Korea
| | - Ji-Woo Choi
- Center for Neuroscience, Korea Institute of Science and Technology, Seoul 136-791, Korea
| | - Deog Su Hwang
- School of Biological Science/Bio-Max Institute, Seoul National University, Gwanak-gu, Seoul 151-747, Korea
| | - Key-Sun Kim
- Center for Neuroscience, Korea Institute of Science and Technology, Seoul 136-791, Korea
| | - Hyo-Joon Kim
- Department of Biochemistry, Hanyang University, Ansan, Kyeonggi-do 425-791, Korea
| | - Jianke Zhang
- Department of Microbiology and Immunology, Thomas Jefferson University, Philadelphia, Pennsylvania 19107, USA
| | - Hyun-Jo Youn
- Department of Surgery, Chonbuk National University Medical School, Jeonju 561-180, Korea
| | - Dong-Young Noh
- Department of Surgery, Seoul National University College of Medicine, Seoul 110-744, Korea
| | - Yong-Keun Jung
- School of Biological Science/Bio-Max Institute, Seoul National University, Gwanak-gu, Seoul 151-747, Korea
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Mariottini GL, Pane L. Cytotoxic and cytolytic cnidarian venoms. A review on health implications and possible therapeutic applications. Toxins (Basel) 2013; 6:108-51. [PMID: 24379089 PMCID: PMC3920253 DOI: 10.3390/toxins6010108] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 12/11/2013] [Accepted: 12/13/2013] [Indexed: 01/20/2023] Open
Abstract
The toxicity of Cnidaria is a subject of concern for its influence on human activities and public health. During the last decades, the mechanisms of cell injury caused by cnidarian venoms have been studied utilizing extracts from several Cnidaria that have been tested in order to evaluate some fundamental parameters, such as the activity on cell survival, functioning and metabolism, and to improve the knowledge about the mechanisms of action of these compounds. In agreement with the modern tendency aimed to avoid the utilization of living animals in the experiments and to substitute them with in vitro systems, established cell lines or primary cultures have been employed to test cnidarian extracts or derivatives. Several cnidarian venoms have been found to have cytotoxic properties and have been also shown to cause hemolytic effects. Some studied substances have been shown to affect tumour cells and microorganisms, so making cnidarian extracts particularly interesting for their possible therapeutic employment. The review aims to emphasize the up-to-date knowledge about this subject taking in consideration the importance of such venoms in human pathology, the health implications and the possible therapeutic application of these natural compounds.
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Affiliation(s)
- Gian Luigi Mariottini
- Department of Earth, Environment and Life Sciences, University of Genova, Viale Benedetto XV 5, Genova I-16132, Italy.
| | - Luigi Pane
- Department of Earth, Environment and Life Sciences, University of Genova, Viale Benedetto XV 5, Genova I-16132, Italy.
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Qiu ZK, Shen D, Chen YS, Yang QY, Guo CC, Feng BH, Chen ZP. Enhanced MGMT expression contributes to temozolomide resistance in glioma stem-like cells. CHINESE JOURNAL OF CANCER 2013; 33:115-22. [PMID: 23958055 PMCID: PMC3935013 DOI: 10.5732/cjc.012.10236] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
O6-methylguanine DNA methyltransferase (MGMT) can remove DNA alkylation adducts, thereby repairing damaged DNA and contributing to the drug resistance of gliomas to alkylating agents. In addition, glioma stem-like cells (GSCs) have been demonstrated to be involved in the recurrence and treatment resistance of gliomas. In this study, we aimed to investigate MGMT expression and regulatory mechanisms in GSCs and the association of MGMT with temozolomide (TMZ) sensitivity. GSCs were enriched from one MGMT-positive cell line (SF-767) and 7 MGMT-negative cell lines (U251, SKMG-4, SKMG-1, SF295, U87, MGR1, and MGR2) through serum-free clone culture. GSCs from the U251G, SKMG-4G, SF295G, and SKMG-1G cell lines became MGMT-positive, but those from the U87G, MGR1G, and MGR2G cell lines remained MGMT-negative. However, all the GSCs and their parental glioma cell lines were positive for nuclear factor-κB (NF-κB). In addition, GSCs were more resistant to TMZ than their parental glioma cell lines (P < 0.05). However, there was no significant difference in the 50% inhibition concentration (IC50) of TMZ between MGMT-positive and MGMT-negative GSCs (P > 0.05). When we treated the MGMT-positive GSCs with TMZ plus MG-132 (an NF-κB inhibitor), the antitumor activity was significantly enhanced compared to that of GSCs treated with TMZ alone (P < 0.05). Furthermore, we found that MGMT expression decreased through the down-regulation of NF-κB expression by MG-132. Our results show that MG-132 may inhibit NF-κB expression and further decrease MGMT expression, resulting in a synergistic effect on MGMT-positive GSCs. These results indicate that enhanced MGMT expression contributes to TMZ resistance in MGMT-positive GSCs.
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Affiliation(s)
- Zhi-Kun Qiu
- State Key Laboratory of Oncology in South China; Department of Neurosurgery/Neuro-oncology, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong 510060, P. R. China.
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Genschik P, Sumara I, Lechner E. The emerging family of CULLIN3-RING ubiquitin ligases (CRL3s): cellular functions and disease implications. EMBO J 2013; 32:2307-20. [PMID: 23912815 DOI: 10.1038/emboj.2013.173] [Citation(s) in RCA: 203] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Accepted: 07/12/2013] [Indexed: 01/07/2023] Open
Abstract
Protein ubiquitylation is a post-translational modification that controls all aspects of eukaryotic cell functionality, and its defective regulation is manifested in various human diseases. The ubiquitylation process requires a set of enzymes, of which the ubiquitin ligases (E3s) are the substrate recognition components. Modular CULLIN-RING ubiquitin ligases (CRLs) are the most prevalent class of E3s, comprising hundreds of distinct CRL complexes with the potential to recruit as many and even more protein substrates. Best understood at both structural and functional levels are CRL1 or SCF (SKP1/CUL1/F-box protein) complexes, representing the founding member of this class of multimeric E3s. Another CRL subfamily, called CRL3, is composed of the molecular scaffold CULLIN3 and the RING protein RBX1, in combination with one of numerous BTB domain proteins acting as substrate adaptors. Recent work has firmly established CRL3s as major regulators of different cellular and developmental processes as well as stress responses in both metazoans and higher plants. In humans, functional alterations of CRL3s have been associated with various pathologies, including metabolic disorders, muscle, and nerve degeneration, as well as cancer. In this review, we summarize recent discoveries on the function of CRL3s in both metazoans and plants, and discuss their mode of regulation and specificities.
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Affiliation(s)
- Pascal Genschik
- Unité Propre de Recherche 2357, Centre National de la Recherche Scientifique, Institut de Biologie Moléculaire des Plantes, Conventionné avec l'Université de Strasbourg, Strasbourg, France.
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Huang JJ, Wu XW, Jia JM, Guo XK, Xue X, Jiang ZY, Zhang SL, Zhang XJ, Sun HP, You QD. Novel IKKβ inhibitors discovery based on the co-crystal structure by using binding-conformation-based and ligand-based method. Eur J Med Chem 2013; 63:269-78. [PMID: 23501112 DOI: 10.1016/j.ejmech.2013.01.045] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Revised: 01/18/2013] [Accepted: 01/24/2013] [Indexed: 12/25/2022]
Abstract
IκB kinase β (IKKβ), an attractive anti-inflammation and anti-cancer target, plays a crucial role in the activation of NF-κB signalling pathway. To identify novel IKKβ inhibitors, we combined structure-based and ligand-based methods based on the co-crystal structure of IKKβ. According to the chemical similarity, 162 reported IKKβ inhibitors were divided into five classes. For each class, a 3D pharmacophore model was established based on the binding conformations of the compounds. The validated models were further used in virtual screening. Twelve drugable compounds were retained for biological test, resulting in two novel inhibitors with IC50 values lower than 10 μM. Compared to other models, our method considers the crystal structure of IKKβ for the first time.
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Affiliation(s)
- Jing-Jie Huang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
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Venè R, Benelli R, Minghelli S, Astigiano S, Tosetti F, Ferrari N. Xanthohumol impairs human prostate cancer cell growth and invasion and diminishes the incidence and progression of advanced tumors in TRAMP mice. Mol Med 2012; 18:1292-302. [PMID: 22952060 DOI: 10.2119/molmed.2012.00174] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Accepted: 08/28/2012] [Indexed: 01/08/2023] Open
Abstract
Despite recent advances in understanding the biological basis of prostate cancer, management of the disease, especially in the phase resistant to androgen ablation, remains a significant challenge. The long latency and high incidence of prostate carcinogenesis provides the opportunity to intervene with chemoprevention to prevent or eradicate prostate malignancies. In this study, we have used human hormone-resistant prostate cancer cells, DU145 and PC3, as an in vitro model to assess the efficacy of xanthohumol (XN) against cell growth, motility and invasion. We observed that treatment of prostate cancer cells with low micromolar doses of XN inhibits proliferation and modulates focal adhesion kinase (FAK) and AKT phosphorylation leading to reduced cell migration and invasion. Oxidative stress by increased production of reactive oxygen species (ROS) was associated with these effects. Transgenic adenocarcinoma of the mouse prostate (TRAMP) transgenic mice were used as an in vivo model of prostate adenocarcinoma. Oral gavage of XN, three times per week, beginning at 4 wks of age, induced a decrease in the average weight of the urogenital (UG) tract, delayed advanced tumor progression and inhibited the growth of poorly differentiated prostate carcinoma. The ability of XN to inhibit prostate cancer in vitro and in vivo suggests that XN may be a novel agent for the management of prostate cancer.
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Affiliation(s)
- Roberta Venè
- Molecular Oncology and Angiogenesis, IRCCS Azienda Ospedaliera Universitaria San Martino, IST, Istituto Nazionale per la Ricerca sul Cancro, Genova, Italy
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Abstract
Inflammatory bowel diseases (IBD) are accompanied by an increased risk of developing colitis-associated carcinoma (CAC). These tumors are one of the most important causes of morbidity and mortality in patients with IBD and distinctly differ from sporadic colorectal cancer in their biology and underlying mechanisms. First, this review discusses risk factors for the development of CAC and summarizes some of the most important genetic alterations and molecular pathways involved in inflammatory carcinogenesis. Then, new endoscopic techniques, such as chromoendoscopy and confocal laser endomicroscopy, and their contribution to surveillance and early detection of CAC are presented. Last, we briefly address different types of concepts for prevention (i.e. anti-inflammatory agents) and treatment (i.e. surgical resection) of CAC and give an outlook on this important aspect of IBD.
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Affiliation(s)
- Sebastian Foersch
- Department of Medicine I, Friedrich Alexander University, Erlangen, Germany
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Rana C, Vaish V, Piplani H, Nehru B, Sanyal SN. Nuclear Factor-κB is expressed in early colon cancer and its down-regulation by Curcumin and Diclofenac is associated with the suppression of proliferation and the induction of apoptosis. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.bionut.2012.07.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Growth inhibition and apoptosis induced by osthole, a natural coumarin, in hepatocellular carcinoma. PLoS One 2012; 7:e37865. [PMID: 22662241 PMCID: PMC3360675 DOI: 10.1371/journal.pone.0037865] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2012] [Accepted: 04/25/2012] [Indexed: 01/05/2023] Open
Abstract
Background Hepatocellular carcinoma (HCC) is one of the most commonly diagnosed tumors worldwide and is known to be resistant to conventional chemotherapy. New therapeutic strategies are urgently needed for treating HCC. Osthole, a natural coumarin derivative, has been shown to have anti-tumor activity. However, the effects of osthole on HCC have not yet been reported. Methods and Findings HCC cell lines were treated with osthole at various concentrations for 24, 48 and 72 hours. The proliferations of the HCC cells were measured by MTT assays. Cell cycle distribution and apoptosis were determined by flow cytometry. HCC tumor models were established in mice by subcutaneously injection of SMMC-7721 or Hepa1-6 cells and the effect of osthole on tumor growths in vivo and the drug toxicity were studied. NF-κB activity after osthole treatment was determined by electrophoretic mobility shift assays and the expression of caspase-3 was measured by western blotting. The expression levels of other apoptosis-related genes were also determined by real-time PCR (PCR array) assays. Osthole displayed a dose- and time-dependent inhibition of the HCC cell proliferations in vitro. It also induced apoptosis and caused cell accumulation in G2 phase. Osthole could significantly suppress HCC tumor growth in vivo with no toxicity at the dose we used. NF-κB activity was significantly suppressed by osthole at the dose- and time-dependent manner. The cleaved caspase-3 was also increased by osthole treatment. The expression levels of some apoptosis-related genes that belong to TNF ligand family, TNF receptor family, Bcl-2 family, caspase family, TRAF family, death domain family, CIDE domain and death effector domain family and CARD family were all increased with osthole treatment. Conclusion Osthole could significantly inhibit HCC growth in vitro and in vivo through cell cycle arrest and inducing apoptosis by suppressing NF-κB activity and promoting the expressions of apoptosis-related genes.
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Han NR, Kim IK, Kim HM, Jeong HJ. Methallyl isothiocyanate inhibits the caspase-1 activity through the inhibition of intracellular calcium levels. Biochimie 2012; 94:816-22. [DOI: 10.1016/j.biochi.2011.11.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2011] [Accepted: 11/26/2011] [Indexed: 02/02/2023]
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Kanterman J, Sade-Feldman M, Baniyash M. New insights into chronic inflammation-induced immunosuppression. Semin Cancer Biol 2012; 22:307-18. [PMID: 22387003 DOI: 10.1016/j.semcancer.2012.02.008] [Citation(s) in RCA: 125] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Accepted: 02/15/2012] [Indexed: 01/11/2023]
Abstract
Chronic inflammation is a common factor linking various pathologies that differ in their etiology and physiology such as cancer, autoimmune diseases, and infections. At a certain stage of each of these diseases, while the chronic inflammation proceeds, some key players of the immune system become immunosuppressed as natural killer (NK) cells and T cells. The suppressive environment induced during chronic inflammation is governed by a complex processes characterized by the accumulation and activation of immune suppressor cells, pro-inflammatory cytokines, chemokines, growth and angiogenic factors, and by the activation of several inflammatory signaling pathways mediated predominantly by NFκB and STAT3 transcription factors. A substantial body of evidence supports the notion that the development of a suppressive environment during chronic inflammation limits the success of immune-based and conventional therapies, skewing the balance in favor of a developing pathology. Thus, appropriate, well-designed and fine tuned immune interventions that could resolve inflammatory responses and associated immunosuppression could enhance disease regression and reinforce successful responses to a given therapy. This review describes the interrelationship between chronic inflammation and induced immunosuppression, and explains the current evidence linking inflammation and pathological processes, as found in cancer. We further highlight potential strategies, harnessing the immunosuppressive environment in treating autoimmune diseases and facilitating transplantation. In parallel, we emphasize the use of modalities to combat chronic inflammation-induced immunosuppression in cancer, to enhance the success of immune-based therapies leading to tumor regression. In both cases, the urgent necessity of identifying biomarkers for the evaluation of host immune status is discussed, with the goal of developing optimal personalized treatments.
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Affiliation(s)
- Julia Kanterman
- The Lautenberg Center for General and Tumor Immunology, The Hebrew University-Hadassah Medical School, Jerusalem, Israel
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Abstract
Cancer is one of the most frightful diseases mostly resulting in mortality; it has recently become more possible to overcome with the help of new therapies. In this direction, carcinogenesis is defined as a complicated process that can include several different factors that contribute to its progress. Proteasome is implicated in cancer studies as it is the main degradation system for oxidatively damaged proteins and also for several proteins playing a role in the cell cycle and transcription, which are important for cancer improvement. Because of this crucial role of proteasome in cancer development, myriad in vitro and in vivo studies have focused on the proteasome in different cancer cases. In this chapter, the involvement of proteasome in the degradation of cancer-related proteins is explained with the results of representative studies. Related to these proteins, the use of proteasome inhibitors in cancer treatment is reviewed.
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D'Aguanno S, D'Agnano I, De Canio M, Rossi C, Bernardini S, Federici G, Urbani A. Shotgun proteomics and network analysis of neuroblastoma cell lines treated with curcumin. MOLECULAR BIOSYSTEMS 2012; 8:1068-77. [DOI: 10.1039/c2mb05498a] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Han NR, Kim HM, Jeong HJ. Inactivation of cystein-aspartic acid protease (caspase)-1 by saikosaponin A. Biol Pharm Bull 2011; 34:817-23. [PMID: 21628878 DOI: 10.1248/bpb.34.817] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This work investigates the anti-inflammatory mechanism of saikosaponin A (SA), a major component of Bupleurum falcatum LINNE. SA significantly inhibited phorbol myristate acetate (PMA) plus A23187-induced the production and expression of interleukin (IL)-6 and tumor necrosis factor (TNF)-α in human mast cell (HMC)-1 cells. SA suppressed PMA plus A23187-induced phosphorylation of extracellular signal-regulated kinase and p38. When HMC-1 cells were treated with SA, translocation of nuclear factor (NF)-κB/Rel A into nucleus and degradation of inhibitor of NF-κB (IκB) in cytoplasm were inhibited. SA decreased PMA plus A23187-induced cysteine-aspartic acid protease (caspase)-1 activity. IL-1β production was also inhibited by SA. Finally, SA significantly decreased the number of nasal rubs and serum TNF-α level in the ovalbumin-sensitized allergic rhinitis mouse model. The underlying mechanism involves, at least in part, inactivation of caspase-1, which provides new evidence for therapeutic application of SA to target inflammatory processes.
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Affiliation(s)
- Na-Ra Han
- Department of Pharmacology, College of Oriental Medicine, Kyung Hee University, Seoul, Republic of Korea
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Grover A, Shandilya A, Punetha A, Bisaria VS, Sundar D. Inhibition of the NEMO/IKKβ association complex formation, a novel mechanism associated with the NF-κB activation suppression by Withania somnifera's key metabolite withaferin A. BMC Genomics 2010; 11 Suppl 4:S25. [PMID: 21143809 PMCID: PMC3005936 DOI: 10.1186/1471-2164-11-s4-s25] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Background Nuclear Factor kappa B (NF-κB) is a transcription factor involved in the regulation of cell signaling responses and is a key regulator of cellular processes involved in the immune response, differentiation, cell proliferation, and apoptosis. The constitutive activation of NF-κB contributes to multiple cellular outcomes and pathophysiological conditions such as rheumatoid arthritis, asthma, inflammatory bowel disease, AIDS and cancer. Thus there lies a huge therapeutic potential beneath inhibition of NF-κB signalling pathway for reducing these chronic ailments. Withania somnifera, a reputed herb in ayurvedic medicine, comprises a large number of steroidal lactones known as withanolides which show plethora of pharmacological activities like anti- inflammatory, antitumor, antibacterial, antioxidant, anticonvulsive, and immunosuppressive. Though a few studies have been reported depicting the effect of WA (withaferin A) on suppression of NF-κB activation, the mechanism behind this is still eluding the researchers. The study conducted here is an attempt to explore NF-κB signalling pathway modulating capability of Withania somnifera’s major constituent WA and to elucidate its possible mode of action using molecular docking and molecular dynamics simulations studies. Results Formation of active IKK (IκB kinase) complex comprising NEMO (NF-κB Essential Modulator) and IKKβ subunits is one of the essential steps for NF-κB signalling pathway, non-assembly of which can lead to prevention of the above mentioned vulnerable disorders. As observed from our semi-flexible docking analysis, WA forms strong intermolecular interactions with the NEMO chains thus building steric as well as thermodynamic barriers to the incoming IKKβ subunits, which in turn pave way to naive complex formation capability of NEMO with IKKβ. Docking of WA into active NEMO/IKKβ complex using flexible docking in which key residues of the complex were kept flexible also suggest the disruption of the active complex. Thus the molecular docking analysis of WA into NEMO and active NEMO/IKKβ complex conducted in this study provides significant evidence in support of the proposed mechanism of NF-κB activation suppression by inhibition or disruption of active NEMO/IKKβ complex formation being accounted by non-assembly of the catalytically active NEMO/IKKβ complex. Results from the molecular dynamics simulations in water show that the trajectories of the native protein and the protein complexed with WA are stable over a considerably long time period of 2.6 ns. Conclusions NF-κB is one of the most attractive topics in current biological, biochemical, and pharmacological research, and in the recent years the number of studies focusing on its inhibition/regulation has increased manifolds. Small ligands (both natural and synthetic) are gaining particular attention in this context. Our computational analysis provided a rationalization of the ability of naturally occurring withaferin A to alter the NF-κB signalling pathway along with its proposed mode of inhibition of the pathway. The absence of active IKK multisubunit complex would prevent degradation of IκB proteins, as the IκB proteins would not get phosphorylated by IKK. This would ultimately lead to non-release of NF-κB and its further translocation to the nucleus thus arresting its nefarious acts. Conclusively our results strongly suggest that withaferin A is a potent anticancer agent as ascertained by its potent NF-κB modulating capability. Moreover the present MD simulations made clear the dynamic structural stability of NEMO/IKKβ in complex with the drug WA, together with the inhibitory mechanism.
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Affiliation(s)
- Abhinav Grover
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology (IIT) Delhi, Hauz Khas, New Delhi, India.
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Kim JH, Cha JY, Cheong HS, Park JS, Jang AS, Uh ST, Kim MK, Choi IS, Cho SH, Park BL, Bae JS, Park CS, Shin HD. KIF3A, a cilia structural gene on chromosome 5q31, and its polymorphisms show an association with aspirin hypersensitivity in asthma. J Clin Immunol 2010; 31:112-21. [PMID: 20922562 DOI: 10.1007/s10875-010-9462-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2010] [Accepted: 09/07/2010] [Indexed: 11/28/2022]
Abstract
INTRODUCTION The kinesin family number 3A (KIF3A) gene on the human chromosomal 5q31-33 region, which is known as a susceptibility locus for immune diseases including asthma, plays a crucial role in generation of cilia. RESULTS A treatment with aspirin in the human bronchial epithelial cells increased the mRNA expression level of KIF3A compared to that of the untreated control (P ≤ 0.01), and nasal polyp epithelia from aspirin-intolerant asthma (AIA) patients also showed a higher expression of KIF3A protein than aspirin-tolerant asthma controls. Further logistic analyses revealed that most polymorphisms of KIF3A were significantly associated with AIA (P = 0.0004-0.02; P(corr) = 0.004-0.04) and the decline of forced expiratory volume at 1 s (FEV(1))% by aspirin provocation (P = 0.004-0.04; P(corr) = 0.03). DISCUSSION Our findings suggest that the KIF3A gene and/or its polymorphisms might have a susceptibility effect on AIA, providing a new step toward controlling aspirin intolerance in asthmatics.
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Affiliation(s)
- Jeong-Hyun Kim
- Department of Life Science, Sogang University, Seoul 121-742, Republic of Korea
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Gao LW, Zhang J, Yang WH, Wang B, Wang JW. Glaucocalyxin A induces apoptosis in human leukemia HL-60 cells through mitochondria-mediated death pathway. Toxicol In Vitro 2010; 25:51-63. [PMID: 20851175 DOI: 10.1016/j.tiv.2010.09.006] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2010] [Revised: 08/19/2010] [Accepted: 09/13/2010] [Indexed: 10/19/2022]
Abstract
Glaucocalyxin A (GLA) is a biologically active ent-kauranoid diterpenoid isolated from Rabdosia japonica var. glaucocalyx, a traditional Chinese medicinal herb, which has been shown to inhibit tumor cell proliferation. However, the mechanism underlying GLA-induced cytotoxicity remains unclear. In this study, we focused on the effect of GLA induction on apoptosis, the mitochondria-mediated death pathway and the accumulation of reactive oxygen species (ROS) in human leukemia cells (HL-60). GLA could induce a dose-dependent apoptosis in HL-60 cells as characterized by cell morphology, DNA fragmentation, activation of caspase-3, -9 and an increased expression ratio of Bax/Bcl-2. The mitochondrial membrane potential (Δψ(m)) loss and cytochrome c release from mitochondria to cytosol were observed during the induction. Moreover, GLA caused a time- and dose-dependent elevation of intracellular ROS level in HL-60 cells, and N-acetyl-l-cysteine (NAC, a well-known antioxidant) could block GLA-induced ROS generation and apoptosis. These data suggest that GLA induces apoptosis in HL-60 cells through ROS-dependent mitochondrial dysfunction pathway.
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Affiliation(s)
- Li Wen Gao
- School of Pharmaceutical Sciences, Soochow University, Suzhou, PR China
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Li H, Sekine M, Tung N, Avraham HK. Wild-type BRCA1, but not mutated BRCA1, regulates the expression of the nuclear form of beta-catenin. Mol Cancer Res 2010; 8:407-20. [PMID: 20215423 DOI: 10.1158/1541-7786.mcr-09-0403] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
BRCA1 is an essential caretaker protein in the surveillance of DNA damage, is mutated in approximately 50% of all hereditary breast cancer cases, and its expression is frequently decreased in sporadic breast cancer. beta-Catenin is a multifunctional protein that forms adhesion complex with E-cadherins, alpha-catenin, and actin, and plays a central role in Wnt signaling through its nuclear translocation and activation of beta-catenin-responsive genes. Although significant progress has been made in understanding the Wnt/beta-catenin and BRCA1 signaling cascades, it is not known whether there is a link between beta-catenin and BRCA1. We observed that the expression of the active nuclear form of beta-catenin (also known as ABC, Ser37/Thr41-nonphosphorylated beta-catenin, dephosphorylated beta-catenin) was lower or absent in the nucleus in most BRCA1 familial breast cancer tissues (17 cases) compared with sporadic breast cancer (14 samples) and normal breast tissues. Wild-type-BRCA1, but not mutated BRCA1, interacted with beta-catenin and increased the levels of beta-catenin protein expression in vitro. Furthermore, H(2)O(2) induced the interaction of the nuclear form of beta-catenin with BRCA1. The active form of beta-catenin protein was downregulated upon exposure to H(2)O(2) in the nucleus of BRCA1-deficient HCC1937 breast cancer cells, whereas reconstitution of WT-BRCA1 in HCC1937 cells inhibited this downregulation. This study provides evidence of a novel interaction between BRCA1 and beta-catenin, and that loss of BRCA1 leads to impaired expression of the nuclear form of beta-catenin, which may contribute to the pathogenesis of breast cancer.
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Affiliation(s)
- Huchun Li
- Division of Experimental Medicine, Beth Israel Deaconess Medical Center, Harvard Institutes of Medicine, 99 Brookline Avenue, RN-330C, Boston, MA 02115, USA
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Fedorov S, Dyshlovoy S, Monastyrnaya M, Shubina L, Leychenko E, Kozlovskaya E, Jin JO, Kwak JY, Bode AM, Dong Z, Stonik V. The anticancer effects of actinoporin RTX-A from the sea anemone Heteractis crispa (=Radianthus macrodactylus). Toxicon 2009; 55:811-7. [PMID: 19944712 DOI: 10.1016/j.toxicon.2009.11.016] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2009] [Revised: 11/13/2009] [Accepted: 11/17/2009] [Indexed: 11/30/2022]
Abstract
Four isoforms of actinoporins were isolated in 2002-2004 from the tropical sea anemone Heteractis crispa (=Radianthus macrodactylus). Their potent hemolytic activities and effects on Ehrlich ascites carcinoma bearing mice were also studied. In this study, the individual actinoporin (RTX-A) demonstrated potential cancer-preventive activity at extremely low and non-cytotoxic concentrations. The substance suppressed the malignant transformation of mouse JB6 P(+) Cl41 cells stimulated by epidermal growth factor (EGF) in soft agar with the inhibition of number of the colonies C(50) (INCC(50))=0.034 nM. Actinoporin RTX-A also was shown to inhibit the phenotype expression of HeLa human cancer cells with an INCC(50)=0.03 nM. The cytotoxic effect of RTX-A against JB6 P(+) Cl41 cells and HeLa, THP-1, MDA-MB-231, and SNU-C4 human tumor cell lines was high (IC(50)=0.57, 2.26, 1.11, 30.0 and 4.66 nM), but significantly less than their capacity to suppress tumor cell colony formation or phenotype expression. RTX-A also induced apoptosis and inhibited basal AP-1, NF-kappaB, and p53-dependent transcriptional activity in JB6 Cl41 cells. These results confirmed that actinoporin RTX-A from H. crispa, at least partially, might exhibit cancer-preventive and anticancer cytotoxic properties through the induction of p53-independent apoptosis and inhibition of the oncogenic AP-1 and NF-kappaB nuclear factors activity.
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Affiliation(s)
- Sergey Fedorov
- Pacific Institute of Bioorganic Chemistry of the Far Eastern Branch of the Russian Academy of Sciences, pr. 100 let Vladivostoku, 159, Vladivostok 690022, Russia.
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Li J, Jia H, Xie L, Wang X, Wang X, He H, Lin Y, Hu L. Association of Constitutive Nuclear Factor-κB Activation With Aggressive Aspects and Poor Prognosis in Cervical Cancer. Int J Gynecol Cancer 2009; 19:1421-6. [DOI: 10.1111/igc.0b013e3181b70445] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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Mezhybovska M, Yudina Y, Abhyankar A, Sjölander A. Beta-catenin is involved in alterations in mitochondrial activity in non-transformed intestinal epithelial and colon cancer cells. Br J Cancer 2009; 101:1596-605. [PMID: 19826421 PMCID: PMC2778528 DOI: 10.1038/sj.bjc.6605342] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Alteration in respiratory activity and mitochondrial DNA (mtDNA) transcription seems to be an important feature of cancer cells. Leukotriene D(4) (LTD(4)) is a proinflammatory mediator implicated in the pathology of chronic inflammation and cancer. We have shown earlier that LTD(4) causes translocation of beta-catenin both to the mitochondria, in which it associates with the survival protein Bcl-2 identifying a novel role for beta-catenin in cell survival, and to the nucleus in which it activates the TCF/LEF transcription machinery. METHODS Here we have used non-transformed intestinal epithelial Int 407 cells and Caco-2 colon cancer cells, transfected or not with wild type and mutated (S33Y) beta-catenin to analyse its effect on mitochondria activity. We have measured the ATP/ADP ratio, and transcription of the mtDNA genes ND2, ND6 and 16 s in these cells stimulated or not with LTD(4). RESULTS We have shown for the first time that LTD(4) triggers a cellular increase in NADPH dehydrogenase activity and ATP/ADP ratio. In addition, LTD(4) significantly increased the transcription of mtDNA genes. Overexpression of wild-type beta-catenin or a constitutively active beta-catenin mutant mimicked the effect of LTD(4) on ATP/ADP ratio and mtDNA transcription. These elevations in mitochondrial activity resulted in increased reactive oxygen species levels and subsequent activations of the p65 subunit of NF-kappaB. CONCLUSIONS The present novel data show that LTD(4), presumably through beta-catenin accumulation in the mitochondria, affects mitochondrial activity, lending further credence to the idea that inflammatory signalling pathways are intrinsically linked with potential oncogenic signals.
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Affiliation(s)
- M Mezhybovska
- Cell and Experimental Pathology, Department of Laboratory Medicine, Malmö University Hospital, Lund University, Malmö, SE-205 02, Sweden
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