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STAT3 and p53: Dual Target for Cancer Therapy. Biomedicines 2020; 8:biomedicines8120637. [PMID: 33371351 PMCID: PMC7767392 DOI: 10.3390/biomedicines8120637] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 12/15/2020] [Accepted: 12/19/2020] [Indexed: 02/06/2023] Open
Abstract
The tumor suppressor p53 is considered the "guardian of the genome" that can protect cells against cancer by inducing cell cycle arrest followed by cell death. However, STAT3 is constitutively activated in several human cancers and plays crucial roles in promoting cancer cell proliferation and survival. Hence, STAT3 and p53 have opposing roles in cellular pathway regulation, as activation of STAT3 upregulates the survival pathway, whereas p53 triggers the apoptotic pathway. Constitutive activation of STAT3 and gain or loss of p53 function due to mutations are the most frequent events in numerous cancer types. Several studies have reported the association of STAT3 and/or p53 mutations with drug resistance in cancer treatment. This review discusses the relationship between STAT3 and p53 status in cancer, the molecular mechanism underlying the negative regulation of p53 by STAT3, and vice versa. Moreover, it underlines prospective therapies targeting both STAT3 and p53 to enhance chemotherapeutic outcomes.
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Lin JZ, Lin N, Zhao WJ. Identification and validation of a six-lncRNA prognostic signature with its ceRNA networks and candidate drugs in lower-grade gliomas. Genomics 2020; 112:2990-3002. [PMID: 32447005 DOI: 10.1016/j.ygeno.2020.05.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 05/08/2020] [Accepted: 05/18/2020] [Indexed: 02/05/2023]
Abstract
Gliomas account for 75% of the primary malignant brain tumors and a majority of lower-grade gliomas (LGG) inevitably develop into glioblastoma. The dysregulation of lncRNAs play a crucial role in LGG. In the present study, we first screened out six differentially expressed lncRNAs (AC021739.2, AL031722.1, AL354740.1, FGD5-AS1, LINC00844, and NEAT1) based on TCGA and GTEx RNA-seq databases. LncRNA prognostic signature was then established by Kaplan-Meier and multivariate Cox proportional hazards regression, with its predictive value validated by time-dependent receiver operating characteristic (ROC) curves. After lncRNA-miRNA-mRNA regulatory networks were established by Cytoscape 3.7.2, Gene Oncology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses were performed, with results enriched in various malignancy-related functions and pathways. Finally, six putative drugs (irinotecan, camptothecin, mitoxantrone, azacitidine, mestranol, and enilconazole) were predicted by Connectivity Map. In conclusion, we identified a 6-lncRNA prognostic signature with its ceRNA networks, and six candidate drugs against LGG.
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Affiliation(s)
- Jia-Zhe Lin
- Neurosurgical Department, The First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Nuan Lin
- Obstetrics & Gynecology Department, The First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Wei-Jiang Zhao
- Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu 214122, China.
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Dai S, Gu H, Lin Q, Xing T, Chen M, Zhong T, Wu G, Feng Y, Liu H, Gao Y, Jian H, Zhang M, Mo H, Zhu H, Chen D, Xu J, Zou Y, Chi H, Zhu Y. Disequilibrium in the CD8 +CD28 +/CD8 +CD28 - T Lymphocyte Balance Is Related to Prognosis in Rats with Trinitrobenzenesulfonic Acid-Induced Colitis. Dig Dis Sci 2017; 62:639-651. [PMID: 28035546 DOI: 10.1007/s10620-016-4424-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Accepted: 12/16/2016] [Indexed: 12/18/2022]
Abstract
PURPOSE The CD8+CD28+/CD8+CD28- T lymphocyte balance is vital for human ulcerative colitis (UC) but has not been defined in experimental colitis. This investigation will try to identify the changes that occur in the CD8+CD28+/CD8+CD28- T lymphocyte balance during the progression of trinitrobenzenesulfonic acid (TNBS)-induced colitis in rats. METHODS The frequencies of blood CD8+CD28+ and CD8+CD28- T lymphocytes were detected in the rats belonging to the normal, model, and treated groups on five days using flow cytometry. The treated rats were administered with mesalazine and were euthanized after a 14-day treatment, as were the normal and model rats. The sensitivity and specificity of the CD8+CD28+/CD8+CD28- T lymphocyte balance in diagnosing early colitis were analyzed by receiver operating characteristics (ROC) curves. The frequencies of CD8+CD28+ and CD8+CD28- T lymphocytes in the colon tissue were tested via immunofluorescence. ELISA was used to measure the levels of the cytokines. Immunohistochemistry and Western blotting were used to detect the colonic expression of JAK3, STAT6, NFATc2, and GATA3. RESULTS We found that the ratio of CD8+CD28+/CD8+CD28- T lymphocytes decreased, as did the level of interleukin-7, but not IL-12p40, IL-13, or IL-15, in the blood; however, the ratio increased along with JAK3, STAT6, NFATc2, and GATA3 in the colon of the rats with colitis. The changes were effectively reversed through the administration of mesalazine for 13 days. Surprisingly, the balance in the blood could sensitively distinguish rats with early colitis from normal rats. CONCLUSION These data show that increase in CD8+CD28+ T cells in blood and decrease in CD8+CD28- T cells in colon are associated with experimental colitis.
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Affiliation(s)
- Shixue Dai
- Department of Rheumatology, TCM-Integrated Hospital, Southern Medical University, No. 13, Shiliugang Road, Haizhu District, Guangzhou, 510315, Guangdong, People's Republic of China.
- Department of Emergency, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong, People's Republic of China.
- Department of Gastroenterology, Guangdong General Hospital and Guangdong Academy of Medical Sciences, South China University of Technology, Guangzhou, 510080, People's Republic of China.
| | - Hongxiang Gu
- Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong, People's Republic of China
| | - Qianyi Lin
- Undergraduate of Grade 2013, The First Clinical College, Southern Medical University, Guangzhou, 510515, Guangdong, People's Republic of China
| | - Tiaosi Xing
- Department of Anatomy and Cell Biology, Brody School of Medicine, East Carolina University, Greenville, NC, 27834, USA
| | - Minhua Chen
- Undergraduate of Grade 2013, School of Public Health, Southern Medical University, Guangzhou, 510515, Guangdong, People's Republic of China
| | - Tao Zhong
- Department of Emergency, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong, People's Republic of China
| | - Gang Wu
- Department of Emergency, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong, People's Republic of China
| | - Yanling Feng
- Department of Gastroenterology, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, 223001, Jiangsu, People's Republic of China
| | - Hongbo Liu
- Department of Spleen and Stomach Diseases, Tai'an Hospital of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Tai'an, 271000, Shandong, People's Republic of China
| | - Yong Gao
- Department of Thoracic Surgery, The Fifth Affiliated Hospital, Southern Medical University, Guangzhou, 510900, Guangdong, People's Republic of China
| | - Hongjian Jian
- Department of Emergency, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong, People's Republic of China
| | - Minhai Zhang
- Department of Emergency, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong, People's Republic of China
| | - Hongmei Mo
- Department of Traditional Chinese Medicine, The Second Clinical Medical College, Guangdong Medical University, Dongguan, 523808, Guangdong, People's Republic of China
| | - Huanjie Zhu
- Department of Traditional Chinese Medicine, The Second Clinical Medical College, Guangdong Medical University, Dongguan, 523808, Guangdong, People's Republic of China
| | - Dongsheng Chen
- Department of Emergency, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong, People's Republic of China
| | - Jun Xu
- Department of Emergency, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong, People's Republic of China
| | - Ying Zou
- Department of Traditional Chinese Medicine, The Second Clinical Medical College, Guangdong Medical University, Dongguan, 523808, Guangdong, People's Republic of China
| | - Honggang Chi
- Department of Traditional Chinese Medicine, The Second Clinical Medical College, Guangdong Medical University, Dongguan, 523808, Guangdong, People's Republic of China
| | - Yuzhen Zhu
- Guangdong Key Laboratory for Research and Development of Natural Drug, Research Institute of Traditional Chinese Medicine, Guangdong Medical University, Zhanjiang, 524023, Guangdong, People's Republic of China
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Ling J, Wu X, Fu Z, Tan J, Xu Q. Systematic analysis of gene expression pattern in has-miR-197 over-expressed human uterine leiomyoma cells. Biomed Pharmacother 2015; 75:226-33. [PMID: 26311392 DOI: 10.1016/j.biopha.2015.07.039] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Accepted: 07/26/2015] [Indexed: 10/23/2022] Open
Abstract
INTRODUCTION Our previous study showed that the expression of miR-197 in leiomyoma was down-regulated compared with myometrium. Further, miR-197 has been identified to affect uterine leiomyoma cell proliferation, apoptosis, and metastasis ability, though the responsible molecular mechanism has not been well elucidated. In this study, we sought to determine the expression patterns of miR-197 targeted genes and to explore their potential functions, participating Pathways and the networks that are involved in the biological behavior of human uterine leiomyoma. METHODS After transfection of human uterine leiomyoma cells with miR-197, we confirmed the expression level of miR-197 using quantitative real-time PCR (qRT-PCR), and we detected the gene expression profiles after miR-197 over-expression through DNA microarray analysis. Further, we performed GO and Pathway analysis. The dominantly dys-regulated genes, which were up- or down-regulated by more than 10-fold, compared with parental cells, were confirmed using qRT-PCR technology. RESULT Compared with the control group, miR-197 was up-regulated by 30-fold after miR-197 lentiviral transfection. The microarray data showed that 872 genes were dys-regulated by more than 2-fold in human uterine leiomyoma cells after miR-197 overexpression, including 537 up-regulated and 335 down-regulated genes. The GO analysis indicated that the dys-regulated genes were primarily involved in response to stimuli, multicellular organ processes, and the signaling of biological progression. Further, Pathway analysis data showed that these genes participated in regulating several signaling Pathways, including the JAK/STAT signaling Pathway, the Toll-like receptor signaling Pathway, and cytokine-cytokine receptor interaction. The qRT-PCR results confirmed that 17 of the 66 selected genes, which were up- or down-regulated more than 10-fold by miR-197, were consistent with the microarray results, including tumorigenesis-related genes, such as DRT7, SLC549, SFMBT2, FLJ37956, FBLN2, C10orf35, HOXD12, CACNG7, and LOC100134279. CONCLUSION Our study explored gene expression patterns after miR-197 overexpression and confirmed 17 dominantly dys-regulated genes, which could expand the insights into the function of miR-197 and the molecular mechanisms during the development and progression of uterine leiomyomas. This study might afford new clues for understanding the pathogenesis of uterine leiomyomas, and it could likely provide a unique method for diagnosing or predicting prognosis in the clinical treatment of leiomyoma.
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Affiliation(s)
- Jing Ling
- Department of Obstetrics and Gynecology, Affiliated Jiangyin Hospital of South-East University, Jiangyin 214400, China
| | - Xiaoli Wu
- Department of Women Health Care, Nanjing Maternity and Child Health Care Hospital Affiliated to Nanjing Medical University, Nanjing 210004, China
| | - Ziyi Fu
- Nanjing Maternal and Child Health Medical Institute, Affiliated Nanjing Maternity and Child Health Hospital, Nanjing Medical University, Nanjing 210004, China
| | - Jie Tan
- Department of Obstetrics and Gynecology, Affiliated Jiangyin Hospital of South-East University, Jiangyin 214400, China.
| | - Qing Xu
- Department of Obstetrics and Gynecology, Affiliated Nanjing Maternity and Child Health Hospital, Nanjing Medical University, Nanjing 210004, China
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Lee M, Young Kim S, Kim J, Kim HS, Kim SM, Kim EJ. Mitogen-activated protein kinase phosphatase-1 inhibition and sustained extracellular signal-regulated kinase 1/2 activation in camptothecin-induced human colon cancer cell death. Cancer Biol Ther 2013; 14:1007-15. [PMID: 24005240 DOI: 10.4161/cbt.26044] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Camptothecins are commonly used chemotherapeutics; in some models, they enhance signaling via the mitogen-activated protein kinase (MAPK) pathway through effects on upstream kinases. To evaluate the impact of camptothecin (CPT) on MAPKs in human colon cancer, we studied HCT116 and CaCo2 colon cancer cells. We found that HCT116 cells highly express mitogen-activated protein kinase phosphatase-1 (MKP1), which selectively inactivates extracellular signal-regulated kinase (ERK), whereas MKP1 levels were undetectable in CaCo2 cells. CPT did not affect ERK activity in CaCo2 cells, but did induce a striking increase in ERK activity in HCT116 cells in association with a corresponding decrease in MKP1. The reduction in MKP1 expression occurred at a posttranscriptional level and was blocked by the proteasome inhibitor MG132, whereas that CPT-induced downregulation of MKP1 was not due to proteasome-mediated degradation. Treatment of HCT116 cells with CPT induced a sustained activation of nuclear ERK, which was required for CPT-induced apoptosis. P38 and JNK activity were unaffected by CPT, suggesting that the effects of CPT are mediated specifically by ERK. These results suggest that targeting dual-specificity MAPK phosphatases in colon cancer cells may be a viable strategy for optimizing camptothecin-based therapeutic protocols.
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Affiliation(s)
- Minyoung Lee
- Division of Radiation Effect; Korea Institute of Radiological & Medical Sciences; Seoul, Korea
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Song X, Wang M, Zhang L, Zhang J, Wang X, Liu W, Gu X, Lv C. Changes in cell ultrastructure and inhibition of JAK1/STAT3 signaling pathway in CBRH-7919 cells with astaxanthin. Toxicol Mech Methods 2013; 22:679-86. [PMID: 22889354 DOI: 10.3109/15376516.2012.717119] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Astaxanthin (AST), a xanthophylls carotenoid, possesses significant anticancer effects. However, to date, the molecular mechanism of anticancer remains unclear. In the present research, we studied the anticancer mechanism of AST, including the changes in cell ultrastructure, such as the mitochondrion, rough endoplasmic reticulum (RER), Golgi complex, and cytoskeleton, the inhibition of Janus kinase 1(JAK1)/transduction and the activators of the transcription-3 (STAT3) signaling pathway using rat hepatocellular carcinoma CBRH-7919 cells. Cell apoptosis was evaluated and the expressions of JAK1, STAT3, non-metastasis23-1 (nm23-1), and apoptotic gene like B-cell lymphoma/leukemia-2 (bcl-2), B-cell lymphoma-extra large (bcl-xl), proto-oncogene proteins c myc (c-myc) and bcl-2- associated X (bax) were also examined. The results showed that AST could induce cancer cell apoptosis. Under transmission electron microscope, the ultrastructure of treated cells were not clearly distinguishable, the membranes of the mitochondrion, RER, Golgi complex were broken or loosened, and the endoplasmic reticulum (ER) was degranulated. Cytoskeleton depolymerization of the microtubule system led to the collapse of extended vimentin intermediate filament bundles into short agglomerations with disordered distributions. AST inhibited the expression of STAT3, its upstream activator JAK1, and the STAT3 target antiapoptotic genes bcl-2, bcl-xl, and c-myc. Conversely, AST enhanced the expressions of nm23-1 and bax. Overall, our findings demonstrate that AST could induce the apoptosis of CBRH-7919 cells, which are involved in cell ultrastructure and the JAK1/STAT3 signaling pathway.
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Affiliation(s)
- Xiaodong Song
- Medicine Research Center, Binzhou Medical University, Yantai, China
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Zhang L, Ma D, Zhang Y, He W, Yang J, Li C, Jiang H. Characterization of DNA topoisomerase-1 in Spodoptera exigua for toxicity evaluation of camptothecin and hydoxy-camptothecin. PLoS One 2013; 8:e56458. [PMID: 23451051 PMCID: PMC3579855 DOI: 10.1371/journal.pone.0056458] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Accepted: 01/14/2013] [Indexed: 11/20/2022] Open
Abstract
Camptothecin (CPT), a plant alkaloid originally isolated from the native Chinese tree, Camptotheca acuminate, exerts the toxic effect by targeting eukaryotic DNA topoisomerase 1 (DNA Topo1). Besides as potent anti-cancer agents, CPT and its derivatives are now being explored as potential pesticides for insect control. In this study, we assessed their toxicity to an insect homolog, the Topo1 protein from beet armyworms (Spodoptera exigua Hübner), a worldwide pest of many important crops. The S. exigua Topo1 gene contains an ORF of 2790 base pairs that is predicted to encode a polypeptide of 930 amino acids. The deduced polypeptide exhibits polymorphism at residue sites V420, L530, A653 and T729 (numbered according to human Topo1) among insect species, which are predicted to confer sensitivity to CPT. The DNA relaxation activity of this protein was subsequently examined using a truncated form that contained the residues 337–930 and was expressed in bacteria BL21 cells. The purified protein retained the ability to relax double-stranded DNA and was susceptible to CPT and its derivative hydroxy-camptothecin (HCPT) in a dose-dependent manner. The same inhibitory effect was also found on the native Topo1 extracted from IOZCAS-Spex-II cells, a cell line established from beet armyworms. Additionally, CPT and HCPT treatment reduced the steady accumulation of Topo1 protein despite the increased mRNA expression in response to the treatment. Our studies provide information of the S. exigua Topo1 gene and its amino acid polymorphism in insects and uncover some clues about potential mechanisms of CPT toxicity against insect pests. These results also are useful for development of more effective Topo1-targeted CPT insecticides in the future.
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Affiliation(s)
- Lan Zhang
- Key Laboratory of Integrated Pest Management in Crops, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Dejun Ma
- Key Laboratory of Integrated Pest Management in Crops, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
- College of Agriculture, Yangtze University, Jingzhou, China
| | - Yanning Zhang
- Key Laboratory of Integrated Pest Management in Crops, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Weizhi He
- Key Laboratory of Integrated Pest Management in Crops, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jingjing Yang
- Key Laboratory of Integrated Pest Management in Crops, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou, China
| | - Chuanren Li
- College of Agriculture, Yangtze University, Jingzhou, China
| | - Hongyun Jiang
- Key Laboratory of Integrated Pest Management in Crops, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
- * E-mail:
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Gao W, Xu J, Liu L, Shen H, Zeng H, Shu Y. A systematic-analysis of predicted miR-21 targets identifies a signature for lung cancer. Biomed Pharmacother 2011; 66:21-8. [PMID: 22244963 DOI: 10.1016/j.biopha.2011.09.004] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2011] [Accepted: 09/06/2011] [Indexed: 01/04/2023] Open
Abstract
INTRODUCTION The well-known oncomiR-miR-21 was previously reported oncogenic activity in lung cancer. We sought to determine the expression of all predicted target genes of miR-21 and their potential function, pathways and networks, which are involved in the biological behavior of lung cancer. METHODS After a systematic review of English language studies of lung cancer-related molecules were pooled; genes were classified in three functional groups by gene ontology (GO) analysis. The key molecules were indentified by establishing lung cancer related networks and pathways. MiR-21 targets were predicted by computational method, followed by screening for matched gene symbols in NCBI human sequences and GO, pathway and network analysis. MiR-21 targets and their network, which are involved in the malignant mechanisms of lung cancer, were obtained by the final integrative analysis. RESULT We indentified the potential functions, pathways and networks of lung cancer relating molecules and miR-21 targets respectively in the initial analysis. In the final integrative analysis of lung cancer related miR-21-targets analysis, 24 hub genes were identified by overlap calculation, suggesting that miR-21 may play an important role in the development and progression of lung cancer through JAK/STAT signal pathway, MAPK signaling pathway, Wnt signaling pathway, cell cycle, PPAR signaling pathway, apoptosis pathway and other pathways. CONCLUSION Our data may help researchers to predict the molecular mechanisms of miR-21 in the development and progression of lung cancer comprehensively. Moreover, the present data indicate that miR-21-targets may be a series of promising candidates as biomarkers for lung cancer.
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Affiliation(s)
- W Gao
- Department of Oncology, the First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing 210029, China.
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Evdokimov NM, Lamoral-Theys D, Mathieu V, Andolfi A, Frolova LV, Pelly SC, van Otterlo WAL, Magedov IV, Kiss R, Evidente A, Kornienko A. In search of a cytostatic agent derived from the alkaloid lycorine: synthesis and growth inhibitory properties of lycorine derivatives. Bioorg Med Chem 2011; 19:7252-61. [PMID: 22019045 PMCID: PMC3383042 DOI: 10.1016/j.bmc.2011.09.051] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2011] [Revised: 08/27/2011] [Accepted: 09/06/2011] [Indexed: 01/10/2023]
Abstract
As a continuation of our studies aimed at the development of a new cytostatic agent derived from an Amaryllidaceae alkaloid lycorine, we synthesized 32 analogues of this natural product. This set of synthetic analogues included compounds incorporating selective derivatization of the C1 versus C2 hydroxyl groups, aromatized ring C, lactamized N6 nitrogen, dihydroxylated C3-C3a olefin functionality, transposed olefin from C3-C3a to C2-C3 or C3a-C4, and C1 long-chain fatty esters. All synthesized compounds were evaluated for antiproliferative activities in vitro in a panel of tumor cell lines including those exhibiting resistance to proapoptotic stimuli and representing solid cancers associated with dismal prognoses, such as melanoma, glioblastoma, and non-small-cell lung cancer. Most active analogues were not discriminatory between cancer cells displaying resistance or sensitivity to apoptosis, indicating that these compounds are thus able to overcome the intrinsic resistance of cancer cells to pro-apoptotic stimuli. 1,2-Di-O-allyllycorine was identified as a lycorine analogue, which is 100 times more potent against a U373 human glioblastoma model than the parent natural product. Furthermore, a number of synthetic analogues were identified as promising for the forthcoming in vivo studies.
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Affiliation(s)
- Nikolai M. Evdokimov
- Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, USA
| | - Delphine Lamoral-Theys
- Laboratoire de Chimie Analytique, Toxicologie et Chimie Physique Appliquée and Université Libre de Bruxelles, Brussels, Belgium
| | - Véronique Mathieu
- Laboratoire de Toxicologie, Faculté de Pharmacie, Université Libre de Bruxelles, Brussels, Belgium
| | - Anna Andolfi
- Dipartimento di Scienze, del Suolo, della Pianta, dell'Ambiente e delle Produzioni Animali, Università di Napoli Federico II, Via Università 100, 80055 Portici, Italy
| | - Liliya V. Frolova
- Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, USA
| | - Stephen C. Pelly
- Department of Chemistry and Polymer Sciences, Stellenbosch University, Stellenbosch, Western Cape, South Africa
| | - Willem A. L. van Otterlo
- Department of Chemistry and Polymer Sciences, Stellenbosch University, Stellenbosch, Western Cape, South Africa
| | - Igor V. Magedov
- Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, USA
| | - Robert Kiss
- Laboratoire de Toxicologie, Faculté de Pharmacie, Université Libre de Bruxelles, Brussels, Belgium
| | - Antonio Evidente
- Dipartimento di Scienze, del Suolo, della Pianta, dell'Ambiente e delle Produzioni Animali, Università di Napoli Federico II, Via Università 100, 80055 Portici, Italy
| | - Alexander Kornienko
- Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, USA
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Qian CJ, Yao J, Si JM. Nuclear JAK2: form and function in cancer. Anat Rec (Hoboken) 2011; 294:1446-59. [PMID: 21809458 DOI: 10.1002/ar.21443] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2011] [Accepted: 05/19/2011] [Indexed: 12/23/2022]
Abstract
The conventional view of Janus kinase 2 (JAK2) is a nonreceptor tyrosine kinase which transmits information to the nucleus via the signal transducer and activator of transcriptions (STATs) without leaving the cytoplasm. However, accumulating data suggest that JAK2 may signal by exporting from cytoplasm to nucleus, where it guides the transcriptional machinery independent of STATs protein. Recent studies demonstrated that JAK2 is a crucial component of signaling pathways operating in the nucleus. Especially the latest landmark discovery confirmed that JAK2 goes into the nucleus and directly interacts with nucleoproteins, such as histone H3 at tyrosine 41 (H3Y41), nuclear factor 1-C2 (NF1-C2) and SWI/SNF-related helicases/ATPases (RUSH)-1α, indicating that JAK2 has a fresh nuclear function. Nuclear JAK2 is linked to a variety of cellular functions, such as cell cycle progression, apoptosis and genetic instability. The balance between these functions is an essential factor in determining whether a cell remains benign or becomes malignant. The aim of this review is intended to summarize the state of our knowledge on nuclear localization of JAK2 and nuclear JAK2 pathways, and to highlight the emerging roles for nuclear JAK2 in carcinogenesis.
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Affiliation(s)
- Cui-Juan Qian
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
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