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New 2-[(4-Amino-6-N-substituted-1,3,5-triazin-2-yl)methylthio]-N-(imidazolidin-2-ylidene)-4-chloro-5-methylbenzenesulfonamide Derivatives, Design, Synthesis and Anticancer Evaluation. Int J Mol Sci 2022; 23:ijms23137178. [PMID: 35806186 PMCID: PMC9267128 DOI: 10.3390/ijms23137178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 06/23/2022] [Accepted: 06/24/2022] [Indexed: 12/07/2022] Open
Abstract
In the search for new compounds with antitumor activity, new potential anticancer agents were designed as molecular hybrids containing the structures of a triazine ring and a sulfonamide fragment. Applying the synthesis in solution, a base of new sulfonamide derivatives 20–162 was obtained by the reaction of the corresponding esters 11–19 with appropriate biguanide hydrochlorides. The structures of the compounds were confirmed by spectroscopy (IR, NMR), mass spectrometry (HRMS or MALDI-TOF/TOF), elemental analysis (C,H,N) and X-ray crystallography. The cytotoxic activity of the obtained compounds toward three tumor cell lines, HCT-116, MCF-7 and HeLa, was examined. The results showed that some of the most active compounds belonged to the R1 = 4-trifluoromethylbenzyl and R1 = 3,5-bis(trifluoromethyl)benzyl series and exhibited IC50 values ranging from 3.6 µM to 11.0 µM. The SAR relationships were described, indicating the key role of the R2 = 4-phenylpiperazin-1-yl substituent for the cytotoxic activity against the HCT-116 and MCF-7 lines. The studies regarding the mechanism of action of the active compounds included the assessment of the inhibition of MDM2-p53 interactions, cell cycle analysis and apoptosis induction examination. The results indicated that the studied compounds did not inhibit MDM2-p53 interactions but induced G0/G1 and G2/M cell cycle arrest in a p53-independent manner. Furthermore, the active compounds induced apoptosis in cells harboring wild-type and mutant p53. The compound design was conducted step by step and assisted by QSAR models that correlated the activity of the compounds against the HCT-116 cell line with molecular descriptors.
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Identified a disintegrin and metalloproteinase with thrombospondin motifs 6 serve as a novel gastric cancer prognostic biomarker by bioinformatics analysis. Biosci Rep 2021; 41:228334. [PMID: 33851708 PMCID: PMC8065180 DOI: 10.1042/bsr20204359] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 04/01/2021] [Accepted: 04/06/2021] [Indexed: 12/15/2022] Open
Abstract
Objective: We aimed to explore the prognostic value of a disintegrin and metalloproteinase with thrombospondin motifs (ADAMTS) genes in gastric cancer (GC). Methods: The RNA-sequencing (RNA-seq) expression data for 351 GC patients and other relevant clinical data were acquired from The Cancer Genome Atlas (TCGA). Survival analysis and a genome-wide gene set enrichment analysis (GSEA) were performed to define the underlying molecular value of the ADAMTS genes in GC development. Besides, qRT-PCR and immunohistochemistry were all employed to validate the relationship between the expression of these genes and GC patient prognosis. Results: The Log rank test with both Cox regression and Kaplan–Meier survival analyses showed that ADAMTS6 expression profile correlated with the GC patients clinical outcome. Patients with a high expression of ADAMTS6 were associated with poor overall survival (OS). Comprehensive survival analysis of the ADAMTS genes suggests that ADAMTS6 might be an independent predictive factor for the OS in patients with GC. Besides, GSEA demonstrated that ADAMTS6 might be involved in multiple biological processes and pathways, such as the vascular endothelial growth factor A (VEGFA), kirsten rat sarcoma viral oncogene (KRAS), tumor protein P53, c-Jun N-terminal kinase (JNK), cadherin (CDH1) or tumor necrosis factor (TNF) pathways. It was also confirmed by immunohistochemistry and qRT-PCR that ADAMTS6 is highly expressed in GC, which may be related to the prognosis of GC patients. Conclusion: In summary, our study demonstrated that ADAMTS6 gene could be used as a potential molecular marker for GC prognosis.
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Jiang Y, Fan L. Evaluation of anticancer activities of Poria cocos ethanol extract in breast cancer: In vivo and in vitro, identification and mechanism. JOURNAL OF ETHNOPHARMACOLOGY 2020; 257:112851. [PMID: 32283190 DOI: 10.1016/j.jep.2020.112851] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 03/30/2020] [Accepted: 04/04/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Poria cocos Wolf (P. cocos), a well-known traditional East-Asian medicinal and edible fungus, is one of the most important components in Chinese medicine formulas like "Guizhi fuling wan" to treat hyperplasia of mammary glands and breast cancer. AIMING OF STUDY In this study, we attempted to verify the anticancer efficacy of the ethanol extract of P. cocos (PC) on the breast cancer as well as to investigate its most active compound and its underlying molecular mechanism in vivo and in vitro. MATERIALS AND METHODS The key anti-cancer components were separated and purified through chromatography and identified by spectral analyses. The in vivo anti-breast cancer efficacy and side effects of PC were evaluated in BALB/c nude mice that have been subcutaneously injected with breast cancer cells MDA-MB-231. Cytotoxicity, apoptosis and cell cycle arrest of PC were evaluated in vitro by cell viability assays and flow cytometry. The protein levels were examined via western blotting. RESULTS Pachymic acid (PA), separated and identified as the most active compound, induced the significant cytotoxicity on breast cancer cells MDA-MB-231(IC50 value, 2.13 ± 0.24 μg/mL) and was not active against the normal breast epithelium cells MCF-10A. The in vivo experiment revealed that PC could significantly inhibit the tumor development and the final mean tumor weight of the mice in the PC group (0.51 ± 0.12g) was significantly lower than that in the model group (1.22 ± 0.45g). Notably, compared to the first-line anticancer drug cisplatin, PC showed less side effects on the function of the vital organs and the muscle strength of the mice. Among in vitro study, PC significantly inhibited the cell growth of MDA-MB-231 by inducing cell apoptosis and cell cycle arrested at G0/G1 phase in a dose-dependent manner. The expression of cell cycle-associated cyclin D1, cyclin E, CDK2, and CDK4 were downregulated, while p53 and p21 expression were upregulated following the PA treatment. In addition, PA downregulated the apoptotic regulator Bcl-2, increased the expression of pro-apoptotic protein Bax, and promoted the release of cytochrome c and the activation of cleaved caspase-3, -9 and caspase -8 via mitochondria-mediated and death receptor-mediated signaling pathways. CONCLUSION This study verified the anticancer efficacy of PC on breast cancer in vivo and in vitro through induction of cell apoptosis and G0/G1 cell cycle arrest. The data also suggested that PA could be developed as an efficacious agent for breast cancer treatment with less side effects.
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Affiliation(s)
- Yu Jiang
- School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Liuping Fan
- School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.
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Yu L, Yu TT, Young KH. Cross-talk between Myc and p53 in B-cell lymphomas. Chronic Dis Transl Med 2019; 5:139-154. [PMID: 31891126 PMCID: PMC6926120 DOI: 10.1016/j.cdtm.2019.08.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Indexed: 02/07/2023] Open
Abstract
Myc and p53 proteins are closely associated with many physiological cellular functions, including immune response and lymphocyte survival, and are expressed in the lymphoid organs, which are sites for the development and activation of B-cell malignancies. Genetic alterations and other mechanisms resulting in constitutive activation, rearrangement, or mutation of MYC and TP53 contribute to the development of lymphomas, progression and therapy resistance by gene dysregulation, activation of downstream anti-apoptotic pathways, and unfavorable microenvironment interactions. The cross-talk between the Myc and p53 proteins contributes to the inferior prognosis in many types of B-cell lymphomas. In this review, we present the physiological roles of Myc and p53 proteins, and recent advances in understanding the pathological roles of Myc, p53, and their cross-talk in lymphoid neoplasms. In addition, we highlight clinical trials of novel agents that directly or indirectly inhibit Myc and/or p53 protein functions and their signaling pathways. Although, to date, these trials have failed to overcome drug resistance, the new results have highlighted the clinical efficiency of targeting diverse mechanisms of action with the goal of optimizing novel therapeutic opportunities to eradicate lymphoma cells.
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Affiliation(s)
- Li Yu
- Department of Hematology, The Second Affiliated Hospital to Nanchang University, Nanchang, Jiangxi 330006, China
- Hematopathology Division and Pathology Department, Duke University School of Medicine, Durham, NC 27710, USA
| | - Tian-Tian Yu
- Department of Hematology, The Second Affiliated Hospital to Nanchang University, Nanchang, Jiangxi 330006, China
| | - Ken H. Young
- Hematopathology Division and Pathology Department, Duke University School of Medicine, Durham, NC 27710, USA
- Duke University Medical Center and Cancer Institute, Durham, NC 27710, USA
- Corresponding author. Hematopathology Division and Pathology Department, Duke University School of Medicine, Duke University Medical Center and Cancer Institute, Durham, NC 27710, USA. Fax: +1-919-681-8868.
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Wang W, Shen XB, Jia W, Huang DB, Wang Y, Pan YY. The p53/miR-193a/EGFR feedback loop function as a driving force for non-small cell lung carcinoma tumorigenesis. Ther Adv Med Oncol 2019; 11:1758835919850665. [PMID: 31205511 PMCID: PMC6535738 DOI: 10.1177/1758835919850665] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 04/04/2019] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Non-small cell lung carcinoma (NSCLC) is a major worldwide health threat due to its low cure rate and high lethality. Emerging evidence suggests that epidermal growth factor receptor (EGFR) plays vital roles in cancer initiation and progression, and is considered an important cancer-driving protein. However, how EGFR expression is regulated during NSCLC development remains to be fully elucidated. METHODS In NSCLC clinical samples, EGFR protein levels were measured by western blotting and qRT-PCR, respectively. Combining microRNA (miRNA) target prediction software and the pulldown assay, we predicted microRNAs (miRNAs) that targeted EGFR. Next, three NSCLC cell lines, A549 (p53 WT), H322 (p53 mutant), and H1299 (p53 null), were used to demonstrate the direct targeting of EGFR by miR-193a. In addition, we investigated the biological effects of EGFR inhibition by miR-193a in vitro using Cell Counting Kit-8, 5-Ethynyl-2'-deoxyuridine (EdU), transwell, and apoptosis assays. Then, using ChIP and luciferase assays, we demonstrated that miR-193a was directly activated by p53 at the transcriptional level and that p53-induced-miR-193a and EGFR form a double-negative feedback loop. RESULTS We found that EGFR mRNA and protein were upregulated in NSCLC. We predicted that EGFR was a target of miR-193a and validated that miR-193a bound directly to the 3'-UTR of the EGFR mRNA. Moreover, miR-193a inhibited NSCLC proliferation and invasion, and promotes NSCLC apoptosis by directly downregulating EGFR. Then, we demonstrated that p53 directly activated miR-193a transcription, whereas EGFR functioned as a transcriptional repressor to negatively control miR-193a expression, forming a feedback loop. The loop promoted NSCLC cell proliferation and migration and accelerated tumor growth in xenograft mice. CONCLUSIONS This study highlights a double-negative feedback loop in NSCLC. The feedback loop is crucial because overexpressing EGFR strongly accelerated tumor growth, while miR-193a restoration blocked tumor growth in vivo. Our findings are in line with the emerging opinion that miRNAs and protein regulators form regulatory networks in critical biological processes and that their dysregulation can lead to cellular dysfunction. In conclusion, this study provides important insights into the molecular mechanisms of NSCLC progression and may help inform the development of new therapeutics for managing NSCLC.
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Affiliation(s)
- Wei Wang
- Department of Medical Oncology, The First Affiliated Hospital of USTC, Hefei, PR China
| | - Xia-Bo Shen
- Department of Medical Oncology, Anhui Provincial Hospital, Hefei, PR China
| | - Wei Jia
- Department of Medical Oncology, The First Affiliated Hospital of USTC, Hefei, PR China
| | - Da-Bing Huang
- Department of Medical Oncology, The First Affiliated Hospital of USTC, Hefei, PR China
| | - Yong Wang
- Department of Medical Oncology, The First Affiliated Hospital of USTC, Hefei, PR China
| | - Yue-Yin Pan
- Department of Medical Oncology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, No.17 Lujiang Road, Luyang District, Hefei 230001, Anhui Province, PR China
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Ma S, Lei Y, Zhang L, Wang J. Effects of zerumbone on proliferation and apoptosis of esophageal cancer cells and on P53 and Bcl-2 expression levels. Oncol Lett 2018; 16:4379-4383. [PMID: 30197671 PMCID: PMC6126338 DOI: 10.3892/ol.2018.9184] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 12/07/2017] [Indexed: 12/18/2022] Open
Abstract
The effects of zerumbone on the proliferation and apoptosis of esophagus cancer cells and on the P53 and Bcl-2 expression levels were studied. The esophagus cancer EC-109 cells were cultured and inoculated. The effect of zerumbone on proliferation of EC-109 cells was detected via the Cell Counting Kit-8 (CCK-8) method. Cell apoptosis was detected via TdT-mediated dUTP nick end-labeling (TUNEL) staining. Moreover, the mRNA expression levels of P53 and Bcl-2 were detected via reverse transcription-polymerase chain reaction (RT-PCR), and the protein expression levels of P53 and Bcl-2 were evaluated via western blotting. CCK-8 detection results showed that compared with control group, zerumbone in different concentrations could inhibit the activity of EC-109, and the proliferation inhibition rate was significantly increased in a concentration-dependent manner with the increase of concentration. TUNEL staining showed that cell apoptosis gradually occurred in administration group, and the number of apoptotic cells was increased in a concentration-dependent manner with the increase of concentration. RT-PCR detection results showed that the mRNA expression level of P53 in administration group was significantly increased compared with that in control group, but that of Bcl-2 was significantly decreased. Western blotting showed that the protein expression level of Bcl-2 in administration group in different concentrations was significantly increased with the increase of zerumbone concentration, but that of Bcl-2 was significantly decreased in a concentration-dependent manner. Zerumbone can inhibit the proliferation and induce apoptosis of esophageal cancer EC-109 cells, and its induction of apoptosis may be realized through upregulating the mRNA expression of P53 and downregulating the mRNA expression of Bcl-2, and upregulating the protein expression of P53 and downregulating the protein expression of Bcl-2.
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Affiliation(s)
- Shiyang Ma
- Department of Gastroenterology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710003, P.R. China
| | - Yali Lei
- Department of Gastroenterology, The Weinan Central Hospital, Weinan, Shaanxi 714000, P.R. China
| | - Li Zhang
- Department of Gastroenterology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710003, P.R. China
| | - Jinhai Wang
- Department of Gastroenterology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710003, P.R. China
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Wu X, Song M, Qiu P, Li F, Wang M, Zheng J, Wang Q, Xu F, Xiao H. A metabolite of nobiletin, 4'-demethylnobiletin and atorvastatin synergistically inhibits human colon cancer cell growth by inducing G0/G1 cell cycle arrest and apoptosis. Food Funct 2018; 9:87-95. [PMID: 29063088 DOI: 10.1039/c7fo01155e] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Combining different chemopreventive agents is a promising strategy to reduce cancer incidence and mortality due to potential synergistic interactions between these agents. Previously, we demonstrated that oral administration of nobiletin (NBT, a citrus flavonoid) at 0.05% (w/w, in diet) together with atorvastatin (ATST, a lipid-lowering drug) at 0.02% (w/w, in diet) produced much stronger inhibition against colon carcinogenesis in rats in comparison with that produced by NBT (at 0.1% w/w in diet) or ATST (at 0.04% w/w in diet) alone at higher doses. To further elucidate the mechanism of this promising synergy between NBT and ATST, herein, we measured the levels of NBT, its major metabolites and ATST in the colonic tissue of rats fed NBT (0.05% w/w, in diet) + ATST (0.02% w/w, in diet), and determined the mode of interaction between the major NBT metabolite and ATST in inhibiting colon cancer cell growth. HPLC-MS analysis showed that 4'-demethylnobiletin (4DN) is the most abundant metabolite of NBT with a level about 5-fold as high as that of NBT in the colonic tissue, which indicated the potential significance of 4DN in mediating the biological effects of NBT in the colon. We found that co-treatments of 4DN/ATST at 2 : 1 concentration ratio produced much stronger growth inhibitory effects on human colon cancer HT-29 cells than 4DN or ATST alone, and isobologram analysis confirmed that this enhanced inhibitory effect by the 4DN/ATST combination was highly synergistic. The co-treatment of 4DN/ATST led to G0/G1 cell cycle arrest and induced extensive apoptosis in HT-29 cells. Furthermore, the 4DN/ATST co-treatment profoundly modulated key signaling proteins related to the regulation of the cell cycle and apoptosis. Our results demonstrated a strong synergy produced by the 4DN/ATST co-treatment in inhibiting colon cancer cell growth, which provided a novel mechanism by which NBT/ATST in combination synergistically inhibit colon carcinogenesis.
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Affiliation(s)
- Xian Wu
- Department of Food Science, University of Massachusetts, Amherst, MA, USA.
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Derivatives of 6-cinnamamido-quinoline-4-carboxamide impair lysosome function and induce apoptosis. Oncotarget 2018; 7:38078-38090. [PMID: 27191263 PMCID: PMC5122373 DOI: 10.18632/oncotarget.9348] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Accepted: 05/02/2016] [Indexed: 01/04/2023] Open
Abstract
Autophagy is a lysosomal degradative process that protects cancer cells from multiple types of stress. In this study, we synthesized a series of derivatives of 6-cinnamamido-quinoline-4-carboxamide (CiQ), and investigated their effects on the proliferation and autophagy of cancer cells in vitro. These derivatives effectively inhibited the proliferation of a broad spectrum of cancer cell lines. Further study revealed that CiQ derivatives may induce autophagy and result in disruption of autophagy propagation. Consequently, these derivatives triggered massive apoptosis, as evidenced by caspase-9 activation and PARP cleavage. Blockage of autophagy by depletion of autophagy related gene ATG5 or BECN1 considerably alleviated CiQ-induced cell death, indicating that autophagy may mediate CiQ-induced cell death. Furthermore, treatment with CiQ derivatives increased lysosome membrane permeability (LMP) and enhanced accumulation of ubiquitinated proteins, which collectively indicate impaired lysosome function. In addition, treatment of cells with CiQ derivatives activated extracellular signal-regulated kinase (ERK); abrogation of ERK activation, either by treating cells with U0126, an inhibitor of mitogen-activated protein/ERK kinase 1 (MEK1), or by ectopically overexpressing a dominant-negative MEK1, significantly reduced CiQ derivative-induced LMP, LC3 and p62 accumulation, and cytotoxicity. These results indicate that CiQ derivatives activate ERK and disrupt lysosome function, thereby altering autophagic flux and resulting in apoptotic cell death.
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Zou B, Wang H, Liu Y, Qi P, Lei T, Sun M, Wang Y. Mangiferin induces apoptosis in human ovarian adenocarcinoma OVCAR3 cells via the regulation of Notch3. Oncol Rep 2017; 38:1431-1441. [PMID: 28714011 PMCID: PMC5549032 DOI: 10.3892/or.2017.5814] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 06/19/2017] [Indexed: 01/01/2023] Open
Abstract
Ovarian cancer is the most lethal gynecological malignancy in the world. Our previous studies showed that mangiferin, purified from plant source, possessed anti-neoplasm effect on human lung adenocarcinoma A549 cells. This study aimed to determine the apoptosis-inducing effect of mangiferin on human ovarian carcinoma OVCAR3 cells. By in vitro studies, we found mangiferin significantly inhibited viability of OVCAR3 cells, and remarkably increased the sensitivity of OVCAR3 cells to cisplatin. In addition, the activation of caspase-dependent apoptosis was observed in mangiferin treated ovarian cancer cells. Importantly, we observed an obviously downregulated Notch expression after mangiferin treatment, indicating the crucial role of Notch in mangiferin mediated apoptosis. In contrast, overexpression of Notch3 abrogated the apoptosis-inducing efficacy of mangiferin, further demonstrating that mangiferin induced apoptosis via Notch pathway. Furthermore, OVCAR3 cell xenograft models revealed that mangiferin treatment inhibited tumor growth and expanded survival of tumor xenograft mice. Based on these results, we concluded that mangiferin could significantly inhibit the proliferation and induce apoptosis in OVCAR3 cells. Our study also suggested the anti-neoplasm effect of mangiferin might be via the regulation of Notch3. Taken together, by targeting cell apoptosis pathways and enhancing the response to cisplatin treatment, mangiferin may represent a potential new drug for the treatment of human ovarian cancer.
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Affiliation(s)
- Bingyu Zou
- Department of Gynecology, Sichuan Academy of Medical Science and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China
| | - Hailian Wang
- Institute of Organ Transplantation, Sichuan Academy of Medical Science and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China
| | - Yilong Liu
- Department of Pharmacy, Sichuan Academy of Medical Science and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China
| | - Ping Qi
- Department of Pediatrics, Sichuan Academy of Medical Science and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China
| | - Tiantian Lei
- Department of Pharmacy, Medical School of University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, P.R. China
| | - Minghan Sun
- Department of Gynecology, Sichuan Academy of Medical Science and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China
| | - Yi Wang
- Department of Pharmacy, Sichuan Academy of Medical Science and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China
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Fan M, Shen J, Liu H, Wen Z, Yang J, Yang P, Liu K, Chang Y, Duan J, Lu K. Downregulation of PRRX1 via the p53-dependent signaling pathway predicts poor prognosis in hepatocellular carcinoma. Oncol Rep 2017; 38:1083-1090. [PMID: 28677793 DOI: 10.3892/or.2017.5785] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Accepted: 06/01/2017] [Indexed: 11/06/2022] Open
Abstract
Paired-related homeobox 1 (PRRX1) has been identified as a novel molecule associated with induction of epithelial-mesenchymal transition (EMT), acquisition of cancer stem cell like properties and poor prognosis in tumors. However, the function of PRRX1 in hepatocellular carcinoma has not been elucidated. In the present study, we observed that PRRX1 expression levels were downregulated and positively correlated with the downregulated expression of p53 in hepatocellular carcinoma specimens. Decreased expression of PRRX1 and/or p53 by siRNA induced both the migration and the invasion features of HCC cells in vitro. Furthermore, the loss of PRRX1 inhibits hepatocellular carcinoma (HCC) cell apoptosis, an anti-apoptotic expression profile was upregulated accompanied by downregulated expression of p53. HCC patients with low-expression of both PRRX1 and p53 had a significantly shorter overall and disease-free survival. These findings demonstrate that PRRX1 plays an important role in metastasis and apoptosis of HCC cells through the p53-dependent signaling pathway and is expected to become a novel biomarker associated with patient prognosis and survival.
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Affiliation(s)
- Mingming Fan
- Department of Laparoscopy, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, P.R. China
| | - Jun Shen
- The First Department of Hepatic Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, P.R. China
| | - Hu Liu
- Department of Laparoscopy, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, P.R. China
| | - Zhijian Wen
- Department of Hepatobiliary Pancreatic Vascular Surgery, No. 174 Hospital of PLA, Xiamen, Fujian, P.R. China
| | - Jue Yang
- Department of Laparoscopy, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, P.R. China
| | - Pinghua Yang
- Department of Laparoscopy, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, P.R. China
| | - Kai Liu
- Department of Laparoscopy, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, P.R. China
| | - Yanxin Chang
- Department of Laparoscopy, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, P.R. China
| | - Jicheng Duan
- Department of Laparoscopy, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, P.R. China
| | - Kai Lu
- Department of Laparoscopy, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, P.R. China
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Induction of p53-Independent Apoptosis and G1 Cell Cycle Arrest by Fucoidan in HCT116 Human Colorectal Carcinoma Cells. Mar Drugs 2017; 15:md15060154. [PMID: 28555064 PMCID: PMC5484104 DOI: 10.3390/md15060154] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 05/16/2017] [Accepted: 05/22/2017] [Indexed: 12/24/2022] Open
Abstract
It is well known that fucoidan, a natural sulfated polysaccharide present in various brown algae, mediates anticancer effects through the induction of cell cycle arrest and apoptosis. Nevertheless, the role of tumor suppressor p53 in the mechanism action of fucoidan remains unclear. Here, we investigated the anticancer effect of fucoidan on two p53 isogenic HCT116 (p53+/+ and p53-/-) cell lines. Our results showed that inhibition of cell viability, induction of apoptosis and DNA damage by treatment with fucoidan were similar in two cell lines. Flow cytometric analysis revealed that fucoidan resulted in G1 arrest in the cell cycle progression, which correlated with the inhibition of phosphorylation of retinoblastoma protein (pRB) and concomitant association of pRB with the transcription factor E2Fs. Furthermore, treatment with fucoidan obviously upregulated the expression of cyclin-dependent kinase (CDK) inhibitors, such as p21WAF1/CIP1 and p27KIP1, which was paralleled by an enhanced binding with CDK2 and CDK4. These events also commonly occurred in both cell lines, suggesting that fucoidan triggered G1 arrest and apoptosis in HCT116 cells by a p53-independent mechanism. Thus, given that most tumors exhibit functional p53 inactivation, fucoidan could be a possible therapeutic option for cancer treatment regardless of the p53 status.
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Chen X, Wu X, Ouyang W, Gu M, Gao Z, Song M, Chen Y, Lin Y, Cao Y, Xiao H. Novel ent-Kaurane Diterpenoid from Rubus corchorifolius L. f. Inhibits Human Colon Cancer Cell Growth via Inducing Cell Cycle Arrest and Apoptosis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:1566-1573. [PMID: 28169543 DOI: 10.1021/acs.jafc.6b05376] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The tender leaves of Rubus corchorifolius L. f. have been consumed as tea for drinking in China since ancient times. In this study, a novel ent-kaurane diterpenoid was isolated and identified from R. corchorifolius L. f. leaves as ent-kaur-2-one-16β,17-dihydroxy-acetone-ketal (DEK). DEK suppressed the growth of HCT116 human colon cancer cells with an IC50 value of 40 ± 0.21 μM, while it did not cause significant growth inhibition on CCD-18Co human colonic myofibroblasts at up to100 μM. Moreover, DEK induced extensive apoptosis and S phase cell cycle arrest in the colon cancer cells. Accordingly, DEK caused profound effects on multiple signaling proteins associated with cell proliferation, cell death, and inflammation. DEK significantly upregulated the expression levels of pro-apoptotic proteins such as cleaved caspase-3, cleaved caspase-9, cleaved PARP, p53, Bax, and tumor suppressor p21Cip1/Waf1, downregulated the levels of cell cycle regulating proteins such as cyclinD1, CDK2, and CDK4 and carcinogenic proteins such as EGFR and COX-2, and suppressed the activation of Akt. Overall, our results provide a basis for using DEK as a potential chemopreventive agent against colon carcinogenesis.
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Affiliation(s)
- Xuexiang Chen
- College of Food Science, South China Agricultural University , Guangzhou 510642, People's Republic of China
- Department of Food Science, University of Massachusetts , Amherst, Massachusetts 01003, United States
- College of Public Health, Guangzhou Medical University , Guangzhou 511436, People's Republic of China
| | - Xian Wu
- Department of Food Science, University of Massachusetts , Amherst, Massachusetts 01003, United States
| | - Wen Ouyang
- Pharmacy College, Hunan University of Traditional Chinese Medicine , Changsha 410007, People's Republic of China
| | - Min Gu
- Department of Food Science, University of Massachusetts , Amherst, Massachusetts 01003, United States
| | - Zili Gao
- Department of Food Science, University of Massachusetts , Amherst, Massachusetts 01003, United States
| | - Mingyue Song
- Department of Food Science, University of Massachusetts , Amherst, Massachusetts 01003, United States
| | - Yunjiao Chen
- College of Food Science, South China Agricultural University , Guangzhou 510642, People's Republic of China
- Guangdong Province Engineering Research Center for Bioactive Natural Products , Guangzhou 510642, People's Republic of China
| | - Yanyin Lin
- College of Food Science, South China Agricultural University , Guangzhou 510642, People's Republic of China
- Guangdong Province Engineering Research Center for Bioactive Natural Products , Guangzhou 510642, People's Republic of China
| | - Yong Cao
- College of Food Science, South China Agricultural University , Guangzhou 510642, People's Republic of China
- Guangdong Province Engineering Research Center for Bioactive Natural Products , Guangzhou 510642, People's Republic of China
| | - Hang Xiao
- Department of Food Science, University of Massachusetts , Amherst, Massachusetts 01003, United States
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Cao J, Han J, Xiao H, Qiao J, Han M. Effect of Tea Polyphenol Compounds on Anticancer Drugs in Terms of Anti-Tumor Activity, Toxicology, and Pharmacokinetics. Nutrients 2016; 8:nu8120762. [PMID: 27983622 PMCID: PMC5188417 DOI: 10.3390/nu8120762] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 11/17/2016] [Accepted: 11/21/2016] [Indexed: 12/16/2022] Open
Abstract
Multidrug resistance and various adverse side effects have long been major problems in cancer chemotherapy. Recently, chemotherapy has gradually transitioned from mono-substance therapy to multidrug therapy. As a result, the drug cocktail strategy has gained more recognition and wider use. It is believed that properly-formulated drug combinations have greater therapeutic efficacy than single drugs. Tea is a popular beverage consumed by cancer patients and the general public for its perceived health benefits. The major bioactive molecules in green tea are catechins, a class of flavanols. The combination of green tea extract or green tea catechins and anticancer compounds has been paid more attention in cancer treatment. Previous studies demonstrated that the combination of chemotherapeutic drugs and green tea extract or tea polyphenols could synergistically enhance treatment efficacy and reduce the adverse side effects of anticancer drugs in cancer patients. In this review, we summarize the experimental evidence regarding the effects of green tea-derived polyphenols in conjunction with chemotherapeutic drugs on anti-tumor activity, toxicology, and pharmacokinetics. We believe that the combination of multidrug cancer treatment with green tea catechins may improve treatment efficacy and diminish negative side effects.
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Affiliation(s)
- Jianhua Cao
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China.
| | - Jie Han
- Analytical Center, Beijing Normal University, Beijing 100875, China.
| | - Hao Xiao
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China.
| | - Jinping Qiao
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China.
| | - Mei Han
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China.
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14
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Sun Y, Wu X, Cai X, Song M, Zheng J, Pan C, Qiu P, Zhang L, Zhou S, Tang Z, Xiao H. Identification of pinostilbene as a major colonic metabolite of pterostilbene and its inhibitory effects on colon cancer cells. Mol Nutr Food Res 2016; 60:1924-32. [DOI: 10.1002/mnfr.201500989] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 03/12/2016] [Accepted: 03/14/2016] [Indexed: 01/08/2023]
Affiliation(s)
- Yue Sun
- School of Pharmacy Ocean University of China Qingdao P. R. China
- Department of Food Science University of Massachusetts Amherst MA USA
| | - Xian Wu
- Department of Food Science University of Massachusetts Amherst MA USA
| | - Xiaokun Cai
- Department of Food Science University of Massachusetts Amherst MA USA
| | - Mingyue Song
- Department of Food Science University of Massachusetts Amherst MA USA
| | - Jinkai Zheng
- Department of Food Science University of Massachusetts Amherst MA USA
- Institute of Agro‐Products Processing Science and Technology Chinese Academy of Agricultural Sciences Beijing P. R. China
| | - Che Pan
- Department of Food Science University of Massachusetts Amherst MA USA
| | - Peiju Qiu
- School of Pharmacy Ocean University of China Qingdao P. R. China
- Department of Food Science University of Massachusetts Amherst MA USA
| | - Lijuan Zhang
- School of Pharmacy Ocean University of China Qingdao P. R. China
| | - Shuangde Zhou
- College of Bioscience and Biotechnology Hunan Agricultural University Changsha Hunan P. R. China
| | - Zhonghai Tang
- College of Bioscience and Biotechnology Hunan Agricultural University Changsha Hunan P. R. China
| | - Hang Xiao
- Department of Food Science University of Massachusetts Amherst MA USA
- College of Bioscience and Biotechnology Hunan Agricultural University Changsha Hunan P. R. China
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15
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Shi W, Deng J, Tong R, Yang Y, He X, Lv J, Wang H, Deng S, Qi P, Zhang D, Wang Y. Molecular mechanisms underlying mangiferin-induced apoptosis and cell cycle arrest in A549 human lung carcinoma cells. Mol Med Rep 2016; 13:3423-32. [PMID: 26935347 PMCID: PMC4805064 DOI: 10.3892/mmr.2016.4947] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Accepted: 01/18/2016] [Indexed: 12/17/2022] Open
Abstract
Mangiferin, which is a C-glucosylxanthone (1,3,6,7-tetrahydroxyxanthone-C2-β-D-glucoside) purified from plant sources, has recently gained attention due to its various biological activities. The present study aimed to determine the apoptotic effects of mangiferin on A549 human lung adenocarcinoma cells. In vitro studies demonstrated that mangiferin exerted growth-inhibitory and apoptosis-inducing effects against A549 cells. In addition, mangiferin exhibited anti-tumor properties in A549 xenograft mice in vivo. Mangiferin triggered G2/M phase cell cycle arrest via down-regulating the cyclin-dependent kinase 1-cyclin B1 signaling pathway, and induced apoptotic cell death by inhibiting the protein kinase C-nuclear factor-κB pathway. In addition, mangiferin was able to enhance the antiproliferative effects of cisplatin on A549 cells, thus indicating the potential for a combined therapy. Notably, mangiferin exerted anticancer effects in vivo, where it was able to markedly decrease the volume and weight of subcutaneous tumor mass, and expand the lifespan of xenograft mice. The present study clarified the molecular mechanisms underlying mangiferin-induced antitumor activities, and suggested that mangiferin may be considered a potential antineoplastic drug for the future treatment of cancer.
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Affiliation(s)
- Wei Shi
- Department of Pediatrics, Sichuan Academy of Medical Science and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China
| | - Jiagang Deng
- Guangxi Province Key Laboratory, Guangxi University of Chinese Medicine, Nanning, Guangxi 530200, P.R. China
| | - Rongsheng Tong
- Department of Pharmacy, Sichuan Academy of Medical Science and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China
| | - Yong Yang
- Department of Pharmacy, Sichuan Academy of Medical Science and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China
| | - Xia He
- Department of Pharmacy, Sichuan Academy of Medical Science and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China
| | - Jianzhen Lv
- Guangxi Province Key Laboratory, Guangxi University of Chinese Medicine, Nanning, Guangxi 530200, P.R. China
| | - Hailian Wang
- Institute of Organ Transplantation, Sichuan Academy of Medical Science and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China
| | - Shaoping Deng
- Institute of Organ Transplantation, Sichuan Academy of Medical Science and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China
| | - Ping Qi
- Department of Pediatrics, Sichuan Academy of Medical Science and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China
| | - Dingding Zhang
- Sichuan Academy of Medical Science and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China
| | - Yi Wang
- Department of Pharmacy, Sichuan Academy of Medical Science and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China
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16
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The p53 tetramer shows an induced-fit interaction of the C-terminal domain with the DNA-binding domain. Oncogene 2015; 35:3272-81. [PMID: 26477317 PMCID: PMC4929483 DOI: 10.1038/onc.2015.388] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Revised: 08/08/2015] [Accepted: 09/03/2015] [Indexed: 12/15/2022]
Abstract
The Trp53 gene is the most frequently mutated gene in all human cancers. Its protein product p53 is a very powerful transcription factor that can activate different biochemical pathways and affect the regulation of metabolism, senescence, DNA damage response, cell cycle and cell death. The understanding of its function at the molecular level could be of pivotal relevance for therapy. Investigation of long-range intra- and interdomain communications in the p53 tetramer–DNA complex was performed by means of an atomistic model that included the tetramerization helices in the C-terminal domain, the DNA-binding domains and a consensus DNA-binding site of 18 base pairs. Nonsymmetric dynamics are illustrated in the four DNA-binding domains, with loop L1 switching from inward to outward conformations with respect to the DNA major groove. Direct intra- and intermonomeric long-range communications between the tetramerization and DNA-binding domains are noted. These long-distance conformational changes link the C terminus with the DNA-binding domain and provide a biophysical rationale for the reported functional regulation of the p53 C-terminal region. A fine characterization of the DNA deformation caused by p53 binding is obtained, with ‘static' deformations always present and measured by the slide parameter in the central thymine–adenine base pairs; we also detect ‘dynamic' deformations switched on and off by particular p53 tetrameric conformations and measured by the roll and twist parameters in the same base pairs. These different conformations can indeed modulate the electrostatic potential isosurfaces of the whole p53–DNA complex. These results provide a molecular/biophysical understanding of the evident role of the C terminus in post-translational modification that regulates the transcriptional function of p53. Furthermore, the unstructured C terminus is able to facilitate contacts between the core DNA-binding domains of the tetramer.
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Lu Z, Jiao D, Qiao J, Yang S, Yan M, Cui S, Liu Z. Restin suppressed epithelial-mesenchymal transition and tumor metastasis in breast cancer cells through upregulating mir-200a/b expression via association with p73. Mol Cancer 2015; 14:102. [PMID: 25972084 PMCID: PMC4429374 DOI: 10.1186/s12943-015-0370-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Accepted: 04/21/2015] [Indexed: 12/31/2022] Open
Abstract
Background Restin belongs to MAGE superfamily and is known as MAGE H1. Restin was firstly cloned from HL-60 cells treated with all-trans retinoic acid (ATRA). Previous studies showed a pro-apoptotic role of Restin in several cell lines. However, little information is available on its expression patterns and functions in vivo. Our study was performed to detect if Restin plays a role in breast cancer cells in vitro and in vivo. Methods and results Real-time PCR and western blot were conducted to detect Restin expression in multiple breast cancer cell lines and Restin level was negatively related with cell motility. Restin overexpression and knockdown stable cell lines were established by transducing lentivirus into MCF-7 and MDA-MB-231 cells. Cell morphology, wound closure assay, transwell migration and invasion assays were performed to detect if Restin inhibited EMT. Our data showed that Restin overexpressed cells exhibited classical epithelial cell morphology, and Restin overexpression resulted in activation of epithelial markers and suppression of mesenchymal markers, and inhibition of cell migration and invasion. Tumor xenograft model was used to characterize the biological functions of Restin in vivo. We found that Restin overexpression led to reduced lung metastasis. Real-time PCR, western blot, luciferase assay and ChIP assay were performed to identify the potential targets of Restin and the underlying molecular mechanisms. Among several master regulators of EMT, only ZEB1/2 levels were dramatically inhibited by Restin. Unexpectedly, Restin indirectly regulated ZEB1/2 expression at post-transcriptional level. We further identified mir-200a/b, well-characterized mediators controlling ZEB1/2 expression, were transcriptionally activated by Restin and the regulation was dependent on the p53 binding site in mir-200b/a/429 promoter. Further mechanical studies demonstrated Restin interacted with p73, one of p53 family members, which contributed to Restin-mediated activation of mir-200a/b and suppression of ZEB1/2. Conclusions Taken together, our results suggest that Restin inhibits EMT and tumor metastasis by controlling the expression of the tumor metastasis suppressor mir-200a/b via association with p73. Our findings not only establish a mechanistic link between Restin, EMT and tumor metastasis, but also provide strong evidence supporting the notion that MAGE Group II proteins may exert a tumor suppressive effect in vivo. Electronic supplementary material The online version of this article (doi:10.1186/s12943-015-0370-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Zhenduo Lu
- Department of Breast surgery, Breast Cancer Center, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, #127 Dongming Road, Zhengzhou, Henan, 450008, People's Republic of China.
| | - Dechuang Jiao
- Department of Breast surgery, Breast Cancer Center, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, #127 Dongming Road, Zhengzhou, Henan, 450008, People's Republic of China.
| | - Jianghua Qiao
- Department of Breast surgery, Breast Cancer Center, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, #127 Dongming Road, Zhengzhou, Henan, 450008, People's Republic of China.
| | - Sen Yang
- Department of Pathogen Biology, Basic Medical College of Zhengzhou University, #100 Science Road, Zhengzhou, 450001, People's Republic of China.
| | - Min Yan
- Department of Breast surgery, Breast Cancer Center, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, #127 Dongming Road, Zhengzhou, Henan, 450008, People's Republic of China.
| | - Shude Cui
- Department of Breast surgery, Breast Cancer Center, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, #127 Dongming Road, Zhengzhou, Henan, 450008, People's Republic of China.
| | - Zhenzhen Liu
- Department of Breast surgery, Breast Cancer Center, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, #127 Dongming Road, Zhengzhou, Henan, 450008, People's Republic of China.
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18
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The Regulatory Role of MicroRNAs in EMT and Cancer. JOURNAL OF ONCOLOGY 2015; 2015:865816. [PMID: 25883654 PMCID: PMC4389820 DOI: 10.1155/2015/865816] [Citation(s) in RCA: 206] [Impact Index Per Article: 22.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Accepted: 10/09/2014] [Indexed: 02/07/2023]
Abstract
The epithelial to mesenchymal transition (EMT) is a powerful process in tumor invasion, metastasis, and tumorigenesis and describes the molecular reprogramming and phenotypic changes that are characterized by a transition from polarized immotile epithelial cells to motile mesenchymal cells. It is now well known that miRNAs are important regulators of malignant transformation and metastasis. The aberrant expression of the miR-200 family in cancer and its involvement in the initiation and progression of malignant transformation has been well demonstrated. The metastasis suppressive role of the miR-200 members is strongly associated with a pathologic EMT. This review describes the most recent advances regarding the influence of miRNAs in EMT and the control they exert in major signaling pathways in various cancers. The ability of the autocrine TGF-β/ZEB/miR-200 signaling regulatory network to control cell plasticity between the epithelial and mesenchymal state is further discussed. Various miRNAs are reported to directly target EMT transcription factors and components of the cell architecture, as well as miRNAs that are able to reverse the EMT process by targeting the Notch and Wnt signaling pathways. The link between cancer stem cells and EMT is also reported and the most recent developments regarding clinical trials that are currently using anti-miRNA constructs are further discussed.
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19
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LEE SANGHAK, NAM JAEKOOK, PARK JONGKOOK, LEE JOOHO, MIN DOSIK, KUH HYOJEONG. Differential protein expression and novel biomarkers related to 5-FU resistance in a 3D colorectal adenocarcinoma model. Oncol Rep 2014; 32:1427-34. [DOI: 10.3892/or.2014.3337] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Accepted: 06/04/2014] [Indexed: 11/05/2022] Open
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20
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McCarty MF. AMPK activation--protean potential for boosting healthspan. AGE (DORDRECHT, NETHERLANDS) 2014; 36:641-663. [PMID: 24248330 PMCID: PMC4039279 DOI: 10.1007/s11357-013-9595-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Accepted: 10/22/2013] [Indexed: 06/01/2023]
Abstract
AMP-activated kinase (AMPK) is activated when the cellular (AMP+ADP)/ATP ratio rises; it therefore serves as a detector of cellular "fuel deficiency." AMPK activation is suspected to mediate some of the health-protective effects of long-term calorie restriction. Several drugs and nutraceuticals which slightly and safely impede the efficiency of mitochondrial ATP generation-most notably metformin and berberine-can be employed as clinical AMPK activators and, hence, may have potential as calorie restriction mimetics for extending healthspan. Indeed, current evidence indicates that AMPK activators may reduce risk for atherosclerosis, heart attack, and stroke; help to prevent ventricular hypertrophy and manage congestive failure; ameliorate metabolic syndrome, reduce risk for type 2 diabetes, and aid glycemic control in diabetics; reduce risk for weight gain; decrease risk for a number of common cancers while improving prognosis in cancer therapy; decrease risk for dementia and possibly other neurodegenerative disorders; help to preserve the proper structure of bone and cartilage; and possibly aid in the prevention and control of autoimmunity. While metformin and berberine appear to have the greatest utility as clinical AMPK activators-as reflected by their efficacy in diabetes management-regular ingestion of vinegar, as well as moderate alcohol consumption, may also achieve a modest degree of health-protective AMPK activation. The activation of AMPK achievable with any of these measures may be potentiated by clinical doses of the drug salicylate, which can bind to AMPK and activate it allosterically.
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Affiliation(s)
- Mark F McCarty
- Catalytic Longevity, 7831 Rush Rose Dr., Apt. 316, Carlsbad, CA, 92009, USA,
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21
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OVA66, a tumor associated protein, induces oncogenic transformation of NIH3T3 cells. PLoS One 2014; 9:e85705. [PMID: 24633332 PMCID: PMC3954546 DOI: 10.1371/journal.pone.0085705] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Accepted: 11/29/2013] [Indexed: 11/19/2022] Open
Abstract
The tumor associated antigen OVA66 has been demonstrated to be highly expressed in malignant tumors and implicated in various cellular processes. To further elucidate its oncogenic character, we established an OVA66 stably overexpressed NIH3T3 cell line and a vector transfected control, named NIH3T3-flagOVA66 and NIH3T3-mock, respectively. NIH3T3-flagOVA66 cells showed faster cell cycling, proliferation, cell migration and more resistance to 5-fluorouracil-induced apoptosis. When NIH3T3-flagOVA66 and NIH3T3-mock cells were injected into nude mice for xenograft tumorigenicity assays, the NIH3T3-flagOVA66 cells formed tumors whereas no tumors were observed in mice inoculated with NIH3T3-mock cells. Analysis of PI3K/AKT and ERK1/2 MAPK signaling pathways by serum stimulation indicated hyperactivation of AKT and ERK1/2 in NIH3T3-flagOVA66 cells compared with NIH3T3-mock cells, while a decreased level of p-AKT and p-ERK1/2 were observed in OVA66 knocked down HeLa cells. To further validate if the p-AKT or p-ERK1/2 is essential for OVA66 induced oncogenic transformation, we treated the cells with the PI3K/AKT specific inhibitor LY294002 and the ERK1/2 MAPK specific inhibitor PD98059 and found either inhibitor can attenuate the cell colony forming ability in soft agar and the cell viability of NIH3T3-flagOVA66 cells, suggesting aberrantly activated AKT and ERK1/2 signaling be indispensible of the tumorigenic role of OVA66. Our results indicate that OVA66 is important in oncogenic transformation, promoting proliferation, cell migration and reducing apoptosis via hyperactivating PI3K/AKT and ERK1/2 MAPK signaling pathway. Thus, OVA66 might be a novel target for early detection, prevention and treatment of tumors in the future.
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22
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Oral Squamous Cell Carcinoma From Users and Nonusers of Tobacco and Alcohol. Appl Immunohistochem Mol Morphol 2013; 21:148-53. [DOI: 10.1097/pai.0b013e3182558b65] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Periasamy VS, Alshatwi AA. Tea polyphenols modulate antioxidant redox system on cisplatin-induced reactive oxygen species generation in a human breast cancer cell. Basic Clin Pharmacol Toxicol 2013; 112:374-84. [PMID: 23145928 DOI: 10.1111/bcpt.12035] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2012] [Accepted: 11/12/2012] [Indexed: 01/07/2023]
Abstract
Tea polyphenols (TPP) have potent antioxidant and anticancer properties, particularly in patients undergoing radiation or chemotherapy. However, few studies have been conducted on treatments using a combination of TPP and the conventional chemical anticancer drug cisplatin (CP). This study was designed to investigate the mechanism of the cytotoxicity of total TPP and CP, which may synergistically induce cell death in cancer cells. Here, breast cancer cells (MCF-7) were treated with various concentrations of TPP alone or in combination with the chemotherapeutic drug CP. The effect of TPP on cell growth, intracellular reactive oxygen species (ROS) level, apoptosis and gene expression of caspase-3, caspase-8 and caspase-9 and p53 was investigated. The MTT (3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay revealed that the MCF-7 cells were less sensitive to growth inhibition by TPP treatment than either CP or the combination therapy. Propidium iodide nuclear staining indicated that exposure to this combination increased the proportion of apoptotic nuclei compared with a single-agent treatment. Flow cytometry analysis was used to quantify changes in intracellular ROS. Detection of activated caspases by fluorescently labelled inhibitors of caspases (FLICA) combined with the plasma membrane permeability assay demonstrated that the percentage of early and late apoptotic/secondary necrotic cells was higher in the cells treated with the combination than in those treated with either TPP or CP alone. The combined TPP and CP treatment synergistically induced apoptosis through both caspase-8 and caspase-9 activation and p53 over-expression. This suggests that TPP plus CP may be used as an efficient antioxidant-based combination therapy for estrogen receptor (ER)-positive and p53-positive breast cancer.
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Affiliation(s)
- Vaiyapuri S Periasamy
- Nanobiotechnology and Molecular Biology Research Laboratory, Department of Food Science and Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh, Kingdom of Saudi Arabia
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Lehmann S, Bykov VJ, Ali D, Andrén O, Cherif H, Tidefelt U, Uggla B, Yachnin J, Juliusson G, Moshfegh A, Paul C, Wiman KG, Andersson PO. Targeting p53 in Vivo: A First-in-Human Study With p53-Targeting Compound APR-246 in Refractory Hematologic Malignancies and Prostate Cancer. J Clin Oncol 2012; 30:3633-9. [DOI: 10.1200/jco.2011.40.7783] [Citation(s) in RCA: 306] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Purpose APR-246 (PRIMA-1MET) is a novel drug that restores transcriptional activity of unfolded wild-type or mutant p53. The main aims of this first-in-human trial were to determine maximum-tolerated dose (MTD), safety, dose-limiting toxicities (DLTs), and pharmacokinetics (PK) of APR-246. Patients and Methods APR-246 was administered as a 2-hour intravenous infusion once per day for 4 consecutive days in 22 patients with hematologic malignancies and prostate cancer. Acute myeloid leukemia (AML; n = 7) and prostate cancer (n = 7) were the most frequent diagnoses. Starting dose was 2 mg/kg with dose escalations up to 90 mg/kg. Results MTD was defined as 60 mg/kg. The drug was well tolerated, and the most common adverse effects were fatigue, dizziness, headache, and confusion. DLTs were increased ALT/AST (n = 1), dizziness, confusion, and sensory disturbances (n = 2). PK showed little interindividual variation and were neither dose nor time dependent; terminal half-life was 4 to 5 hours. Tumor cells showed cell cycle arrest, increased apoptosis, and upregulation of p53 target genes in several patients. Global gene expression analysis revealed changes in genes regulating proliferation and cell death. One patient with AML who had a p53 core domain mutation showed a reduction of blast percentage from 46% to 26% in the bone marrow, and one patient with non-Hodgkin's lymphoma with a p53 splice site mutation showed a minor response. Conclusion We conclude that APR-246 is safe at predicted therapeutic plasma levels, shows a favorable pharmacokinetic profile, and can induce p53-dependent biologic effects in tumor cells in vivo.
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Affiliation(s)
- Sören Lehmann
- Sören Lehmann, Dina Ali, and Christer Paul, Karolinska University Hospital, Huddinge; Vladimir J.N. Bykov, Ali Moshfegh, and Klas G. Wiman, Karolinska Institutet, Stockholm; Ove Andrén, Örebro University; Ulf Tidefelt and Bertil Uggla, Örebro University Hospital, Örebro; Honar Cherif and Jeffrey Yachnin, Uppsala University Hospital, Uppsala; Gunnar Juliusson, Skåne University Hospital, Lund; and Per-Ola Andersson, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Vladimir J.N. Bykov
- Sören Lehmann, Dina Ali, and Christer Paul, Karolinska University Hospital, Huddinge; Vladimir J.N. Bykov, Ali Moshfegh, and Klas G. Wiman, Karolinska Institutet, Stockholm; Ove Andrén, Örebro University; Ulf Tidefelt and Bertil Uggla, Örebro University Hospital, Örebro; Honar Cherif and Jeffrey Yachnin, Uppsala University Hospital, Uppsala; Gunnar Juliusson, Skåne University Hospital, Lund; and Per-Ola Andersson, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Dina Ali
- Sören Lehmann, Dina Ali, and Christer Paul, Karolinska University Hospital, Huddinge; Vladimir J.N. Bykov, Ali Moshfegh, and Klas G. Wiman, Karolinska Institutet, Stockholm; Ove Andrén, Örebro University; Ulf Tidefelt and Bertil Uggla, Örebro University Hospital, Örebro; Honar Cherif and Jeffrey Yachnin, Uppsala University Hospital, Uppsala; Gunnar Juliusson, Skåne University Hospital, Lund; and Per-Ola Andersson, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Ove Andrén
- Sören Lehmann, Dina Ali, and Christer Paul, Karolinska University Hospital, Huddinge; Vladimir J.N. Bykov, Ali Moshfegh, and Klas G. Wiman, Karolinska Institutet, Stockholm; Ove Andrén, Örebro University; Ulf Tidefelt and Bertil Uggla, Örebro University Hospital, Örebro; Honar Cherif and Jeffrey Yachnin, Uppsala University Hospital, Uppsala; Gunnar Juliusson, Skåne University Hospital, Lund; and Per-Ola Andersson, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Honar Cherif
- Sören Lehmann, Dina Ali, and Christer Paul, Karolinska University Hospital, Huddinge; Vladimir J.N. Bykov, Ali Moshfegh, and Klas G. Wiman, Karolinska Institutet, Stockholm; Ove Andrén, Örebro University; Ulf Tidefelt and Bertil Uggla, Örebro University Hospital, Örebro; Honar Cherif and Jeffrey Yachnin, Uppsala University Hospital, Uppsala; Gunnar Juliusson, Skåne University Hospital, Lund; and Per-Ola Andersson, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Ulf Tidefelt
- Sören Lehmann, Dina Ali, and Christer Paul, Karolinska University Hospital, Huddinge; Vladimir J.N. Bykov, Ali Moshfegh, and Klas G. Wiman, Karolinska Institutet, Stockholm; Ove Andrén, Örebro University; Ulf Tidefelt and Bertil Uggla, Örebro University Hospital, Örebro; Honar Cherif and Jeffrey Yachnin, Uppsala University Hospital, Uppsala; Gunnar Juliusson, Skåne University Hospital, Lund; and Per-Ola Andersson, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Bertil Uggla
- Sören Lehmann, Dina Ali, and Christer Paul, Karolinska University Hospital, Huddinge; Vladimir J.N. Bykov, Ali Moshfegh, and Klas G. Wiman, Karolinska Institutet, Stockholm; Ove Andrén, Örebro University; Ulf Tidefelt and Bertil Uggla, Örebro University Hospital, Örebro; Honar Cherif and Jeffrey Yachnin, Uppsala University Hospital, Uppsala; Gunnar Juliusson, Skåne University Hospital, Lund; and Per-Ola Andersson, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Jeffrey Yachnin
- Sören Lehmann, Dina Ali, and Christer Paul, Karolinska University Hospital, Huddinge; Vladimir J.N. Bykov, Ali Moshfegh, and Klas G. Wiman, Karolinska Institutet, Stockholm; Ove Andrén, Örebro University; Ulf Tidefelt and Bertil Uggla, Örebro University Hospital, Örebro; Honar Cherif and Jeffrey Yachnin, Uppsala University Hospital, Uppsala; Gunnar Juliusson, Skåne University Hospital, Lund; and Per-Ola Andersson, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Gunnar Juliusson
- Sören Lehmann, Dina Ali, and Christer Paul, Karolinska University Hospital, Huddinge; Vladimir J.N. Bykov, Ali Moshfegh, and Klas G. Wiman, Karolinska Institutet, Stockholm; Ove Andrén, Örebro University; Ulf Tidefelt and Bertil Uggla, Örebro University Hospital, Örebro; Honar Cherif and Jeffrey Yachnin, Uppsala University Hospital, Uppsala; Gunnar Juliusson, Skåne University Hospital, Lund; and Per-Ola Andersson, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Ali Moshfegh
- Sören Lehmann, Dina Ali, and Christer Paul, Karolinska University Hospital, Huddinge; Vladimir J.N. Bykov, Ali Moshfegh, and Klas G. Wiman, Karolinska Institutet, Stockholm; Ove Andrén, Örebro University; Ulf Tidefelt and Bertil Uggla, Örebro University Hospital, Örebro; Honar Cherif and Jeffrey Yachnin, Uppsala University Hospital, Uppsala; Gunnar Juliusson, Skåne University Hospital, Lund; and Per-Ola Andersson, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Christer Paul
- Sören Lehmann, Dina Ali, and Christer Paul, Karolinska University Hospital, Huddinge; Vladimir J.N. Bykov, Ali Moshfegh, and Klas G. Wiman, Karolinska Institutet, Stockholm; Ove Andrén, Örebro University; Ulf Tidefelt and Bertil Uggla, Örebro University Hospital, Örebro; Honar Cherif and Jeffrey Yachnin, Uppsala University Hospital, Uppsala; Gunnar Juliusson, Skåne University Hospital, Lund; and Per-Ola Andersson, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Klas G. Wiman
- Sören Lehmann, Dina Ali, and Christer Paul, Karolinska University Hospital, Huddinge; Vladimir J.N. Bykov, Ali Moshfegh, and Klas G. Wiman, Karolinska Institutet, Stockholm; Ove Andrén, Örebro University; Ulf Tidefelt and Bertil Uggla, Örebro University Hospital, Örebro; Honar Cherif and Jeffrey Yachnin, Uppsala University Hospital, Uppsala; Gunnar Juliusson, Skåne University Hospital, Lund; and Per-Ola Andersson, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Per-Ola Andersson
- Sören Lehmann, Dina Ali, and Christer Paul, Karolinska University Hospital, Huddinge; Vladimir J.N. Bykov, Ali Moshfegh, and Klas G. Wiman, Karolinska Institutet, Stockholm; Ove Andrén, Örebro University; Ulf Tidefelt and Bertil Uggla, Örebro University Hospital, Örebro; Honar Cherif and Jeffrey Yachnin, Uppsala University Hospital, Uppsala; Gunnar Juliusson, Skåne University Hospital, Lund; and Per-Ola Andersson, Sahlgrenska University Hospital, Gothenburg, Sweden
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Wang N, Xu HL, Zhao X, Wen X, Wang FT, Wang SY, Fu LL, Liu B, Bao JK. Network-based identification of novel connections among apoptotic signaling pathways in cancer. Appl Biochem Biotechnol 2012; 167:621-31. [PMID: 22581077 DOI: 10.1007/s12010-012-9704-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2011] [Accepted: 04/23/2012] [Indexed: 02/05/2023]
Abstract
MicroRNAs (miRNAs), highly conserved, non-coding endogenous RNA and nearly ~22 nucleotides (nt) in length, are well-known to regulate several apoptotic pathways in cancer. In this study, we computationally constructed the initial human apoptotic PPI network by several online databases, and further integrated these high-throughput datasets into a Naïve Bayesian model to predict protein functional connections. Based on the modified apoptotic network, we identified several apoptotic hub proteins such as TP53, SRC, M3K3/5/8, cyclin-dependent kinase2/6, TNFR16/19, and TGF-β receptor 1/2. Subsequently, we identified some microRNAs that could target the aforementioned apoptotic hub proteins by using TargetScan, PicTar, and Diana-MicroH. In conclusion, these results demonstrate the PPI network-based identification of new connections amongst apoptotic pathways in cancer, which may shed new light on the intricate relationships between core apoptotic pathways and some targeted miRNAs in human cancers.
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Affiliation(s)
- Nan Wang
- School of Life Sciences and The State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu 610064, China
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26
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Wu Q, Qian YM, Zhao XL, Wang SM, Feng XJ, Chen XF, Zhang SH. Expression and prognostic significance of centromere protein A in human lung adenocarcinoma. Lung Cancer 2012; 77:407-14. [PMID: 22542705 DOI: 10.1016/j.lungcan.2012.04.007] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2011] [Revised: 03/16/2012] [Accepted: 04/05/2012] [Indexed: 10/28/2022]
Abstract
BACKGROUND Centromere protein A (CENP-A), one of the fundamental components of the human active kinetochore, is frequently upregulated in many cancers and plays important roles in cell cycle regulation, cell survival, and genetic stability. The aim of the present study was to explore the expression and prognostic significance of CENP-A in lung adenocarcinoma. EXPERIMENTAL DESIGN The expression of CENP-A was detected in 20 fresh human lung adenocarcinoma specimens and corresponding non-tumorous lung tissues by real-time polymerase chain reaction (RT-PCR) and Western blotting analysis. Using immunohistochemistry, we analyzed CENP-A protein expression in additional 309 lung adenocarcinomas. The clinicopathological and prognostic significance of CENP-A expression was analyzed. RESULTS RT-PCR and Western blotting analysis revealed an enhanced expression of CENP-A in lung adenocarcinomas relative to adjacent non-tumorous lung tissues at both transcriptional and translational levels. Immunohistochemistry showed that 146 of 309 lung adenocarcinomas (47.3%) had high expression of CENP-A. CENP-A overexpression was significantly correlated with pathological grade (P=0.009), pT status (P=0.017), pN status (P=0.002), pleural invasion (P=0.013), high Ki-67 expression (P=0.003), and P53 positivity (P=0.001). Patients with high CENP-A expression had shorter overall survival time compared with those with low CENP-A expression. Multivariate analysis identified CENP-A as an independent prognostic factor for lung adenocarcinoma. CONCLUSION Our results demonstrate that elevated CENP-A expression is closely associated with lung adenocarcinoma progression and has an independent prognostic value in predicting overall survival for patients with lung adenocarcinoma.
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Affiliation(s)
- Qing Wu
- Department of Respiratory Medicine, Hangzhou Hospital of Traditional Chinese Medicine, Zhejiang University of Traditional Chinese Medicine, Hangzhou 310007, PR China
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27
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Campos A, Souza CB, Lhullier C, Falkenberg M, Schenkel EP, Ribeiro-do-Valle RM, Siqueira JM. Anti-tumour effects of elatol, a marine derivative compound obtained from red algae Laurencia microcladia. ACTA ACUST UNITED AC 2012; 64:1146-54. [PMID: 22775218 DOI: 10.1111/j.2042-7158.2012.01493.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVES This paper aims to evaluate the anti-tumour properties of elatol, a compound (sesquiterpene) isolated from algae Laurencia microcladia. METHODS In-vitro and in-vivo anti-tumour properties of elatol were investigated using: MTT assays to assess the cytotoxic effects; flow cytometry analysis to examine the cell cycle and apoptosis; Western blot analysis for determination of the expression of cell cycle and apoptosis proteins; and study of in-vivo tumour growth in mice (C57Bl6 mice bearing B16F10 cells). KEY FINDINGS Elatol exhibited a cytotoxic effect, at least in part, by inducing cell cycle arrest in the G(1) and the sub-G(1) phases, leading cells to apoptosis. Western blot analysis demonstrated that elatol reduced the expression of cyclin-D1, cyclin-E, cyclin-dependent kinase (cdk)2 and cdk4. A decrease in bcl-xl and an increase in bak, caspase-9 and p53 expression was also observed. In the in-vivo experiment, treatment with elatol was able to reduce tumour growth in C57Bl6 mice. CONCLUSIONS Elatol promotes a delay in the cell cycle, probably in the G(1)/S transition, activating the apoptotic process and this could be responsible, at least in part, for the in-vivo effects observed. Taken together, the in-vitro and in-vivo experiments suggested that elatol has anti-tumour properties. Further studies should be conducted to clarify the mechanism of action.
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Affiliation(s)
- Andreza Campos
- Department of Pharmacology Department of Pharmaceutical Sciences, Federal University of Santa Catarina, Florianópolis, SC, Brazil
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28
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Upreti M, Koonce NA, Hennings L, Chambers TC, Griffin RJ. Pegylated IFN-α sensitizes melanoma cells to chemotherapy and causes premature senescence in endothelial cells by IRF-1 mediated signaling. Cell Death Dis 2011; 1:e67. [PMID: 21197417 PMCID: PMC3010727 DOI: 10.1038/cddis.2010.43] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Pegylated interferon-α2b (pIFN-α) is an integral part of the drug regimen currently employed against melanoma. Interferon regulatory factor-1 (IRF-1) has an important role in the transcriptional regulation of the IFN response, cell cycle and apoptosis. We have studied pIFN-α-induced responses when combined with the chemotherapy agent, vinblastine (VBL), in tumor and endothelial cell lines and the connection to IRF-1 signaling. Levels of IRF-1/IRF-2 protein expression were found to be decreased in tumor versus normal tissues. pIFN-α induced IRF-1 signaling in human melanoma (M14) and endothelial (EA.hy926) cells and enhanced cell death when combined with VBL. Upon combined IFN-α and VBL treatment, p21 expression, poly (ADP-ribose) polymerase cleavage and activated Bak levels were increased in M14 cells. An increase in p21 and cyclin D1 expression occurred in EA.hy926 cells after 6 h of treatment with pIFN-α, which dissipated by 24 h. This biphasic response, characteristic of cellular senescence, was more pronounced upon combined treatment. Exposure of the EA.hy926 cells to pIFN-α was associated with an enlarged, multinucleated, β-galactosidase-positive senescent phenotype. The overall therapeutic mechanism of IFN-α combined with chemotherapy may be due to both direct tumor cell death via IRF-1 signaling and by premature senescence of endothelial cells and subsequent effects on angiogenesis in the tumor microenvironment.
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Affiliation(s)
- M Upreti
- Department of Radiation Oncology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
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29
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Hu C, Li X, Wang W, Zhang L, Tao L, Dong X, Sheng R, Yang B, Hu Y. Design, synthesis, and biological evaluation of imidazoline derivatives as p53-MDM2 binding inhibitors. Bioorg Med Chem 2011; 19:5454-61. [PMID: 21855354 DOI: 10.1016/j.bmc.2011.07.050] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2011] [Revised: 07/22/2011] [Accepted: 07/24/2011] [Indexed: 10/17/2022]
Abstract
Three series of novel imidazoline derivatives were designed, synthesized, and evaluated for their p53-MDM2 binding inhibitory activities, and anti-proliferation activities against PC3, A549, KB, and HCT116 cancer cell lines. Five of the tested compounds showed enhanced p53-MDM2 binding inhibitory potency and anti-proliferation activities in comparison with that of Nutlin-1. Flow cytometric analysis indicated that compound 7c, one of the most potent p53-MDM2 binding inhibitors with a K(i) value of 0.6 μM, showed its ability to arrest cell cycle progression.
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Affiliation(s)
- Chunqi Hu
- ZJU-ENS Joint Laboratory of Medicinal Chemistry, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
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30
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D'agostino L, Giordano A. NSP 5a3a: a potential novel cancer target in head and neck carcinoma. Oncotarget 2011; 1:423-35. [PMID: 21311098 DOI: 10.18632/oncotarget.100913] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
NSP 5a3a along with three other distinct though similar splice variants were initially identified corresponding to locus HCMOGT-1 on chromosome 17p11.2 [1]. Secondary structure analysis of the novel structural protein (NSP) isoforms revealed similarity to Spectrin like proteins containing coiled coil domains [1]. The NSP 5a3a isoform had been found to be highly expressed in-vitro in particular cancer cell lines while very low to un-detectable levels in normal body tissues [1]. Subsequent investigation of this isoform revealed its novel interaction with B23 [2], a multifunctional nucleolar protein involved in ribosome biogenesis, rRNA transcription, mitosis, cell growth control, and apoptosis [3]. Subsequent investigation, elucidated NSP 5a3a's potential involvement in cellular processes such as ribosome biogenesis and rRNA processing by validating NSP 5a3a's novel interaction with B23 and ribonuclear protein hnRNP-L possibly implicating NSP 5a3a's involvement in cellular activities such as RNA metabolism and processing [4]. In this preliminary investigation, we wanted to observe the effect that over-expressing NSP 5a3a may have on cell cycle and its potential application in cancer treatment in aggressive cancers such as head and neck carcinomas. Over-expressed NSP 5a3a in HN30 cells induced a significant degree of apoptosis, an average of a 10.85 fold increase compared to controls 3 days post-transfection. This effect was more significant then the apoptosis observed between Fadu cells over-expressing NSP 5a3a and its controls. Though, the apoptosis induced in the WI38 control cell line showed an average of a 13.2 fold increase between treated and controls comparable to the HN30 cell line 3 days post-transfection. Molecular analysis indentified a novel p73 dependent mechanism independent of p53 and caspase 3 activity through which NSP 5a3a is inducing apoptosis. We propose NSP 5a3a as a potential therapeutic target for site directed cancer treatment in perhaps certain head and neck carcinomas by induction of apoptosis.
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Affiliation(s)
- Luca D'agostino
- Sbarro Institute for Cancer Research and Molecular Medicine and Department of Biology, College of Science and Technology Temple University, 1900 North 12th street room 431, Philadelphia, PA 19122, USA.
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Kim T, Veronese A, Pichiorri F, Lee TJ, Jeon YJ, Volinia S, Pineau P, Marchio A, Palatini J, Suh SS, Alder H, Liu CG, Dejean A, Croce CM. p53 regulates epithelial-mesenchymal transition through microRNAs targeting ZEB1 and ZEB2. ACTA ACUST UNITED AC 2011; 208:875-83. [PMID: 21518799 PMCID: PMC3092351 DOI: 10.1084/jem.20110235] [Citation(s) in RCA: 425] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
By transactivating expression of miRNAs that repress expression of the ZEB1 and ZEB2 transcription factors, p53 inhibits the epithelial–mesenchymal transition. p53 suppresses tumor progression and metastasis. Epithelial–mesenchymal transition (EMT) is a key process in tumor progression and metastasis. The transcription factors ZEB1 and ZEB2 promote EMT. Here, we show that p53 suppresses EMT by repressing expression of ZEB1 and ZEB2. By profiling 92 primary hepatocellular carcinomas (HCCs) and 9 HCC cell lines, we found that p53 up-regulates microRNAs (miRNAs), including miR-200 and miR-192 family members. The miR-200 family members transactivated by p53 then repress ZEB1/2 expression. p53-regulated miR-192 family members also repress ZEB2 expression. Inhibition or overexpression of the miRNAs affects p53-regulated EMT by altering ZEB1 and ZEB2 expression. Our findings indicate that p53 can regulate EMT, and that p53-regulated miRNAs are critical mediators of p53-regulated EMT.
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Affiliation(s)
- Taewan Kim
- Department of Molecular Virology, Immunology and Medical Genetics, Comprehensive Cancer Center, 2 Molecular, Cellular, and Developmental Biology Program, The Ohio State University, Columbus, OH 43210, USA
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Liu W, Yu YH, Ouyang XN, Wang L, Wu YM, Chen J, Xiong XS. Clinical significance of P53 and Ki67 expression in gastric cancer. Shijie Huaren Xiaohua Zazhi 2011; 19:367-373. [DOI: 10.11569/wcjd.v19.i4.367] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the correlation of P53 and Ki67 protein expression with the clinicopathological parameters in gastric cancer.
METHODS: A total of 1 107 surgical specimens of gastric cancer were collected from the Fuzhou General Hospital of Nanjing Military Command, The expression of P53 and Ki67 was examined by immunohistochemistry in 775 gastric cancer specimens taken from patients with complete clinical data.
RESULTS: The positive rates of P53 and Ki67 protein expression were 46.84% and 78.97%, respectively. Higher positive rates of P53 and Ki67 protein expression were noted in intestinal-type gastric cancer than in diffuse-type gastric cancer (54.7% vs 38.0%, 86.0% vs 70.0%, both P < 0.05) and in well-differentiated cancer than in poorly-differentiated cancer (54.7 vs 35.4%, 87.0% vs 67.2%, both P < 0.05). A higher positive rate of P53 protein expression was noted in gastroesophageal junction (GEJ) cancer than in gastric cancer (53.7% vs 41.9%, P < 0.05) and in cancer without distant metastasis than in that with distant metastasis (49.0% vs 30.3%, P < 0.05). A higher positive rate of Ki67 protein expression was noted in invasive cancer than in less invasive cancer ( 80.3% vs 60.4%, P < 0.05) and in cancer with lymph node metastasis than in that without lymph node metastasis (81.4% vs 72.6 %, P < 0.05).
CONCLUSION: P53 and Ki67 protein expression might be associated with the development, invasion, and metastasis of gastric cancer, and can be used to evaluate the malignant behavior and prognosis of gastric cancer.
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Oliveira LR, Ribeiro-Silva A. Prognostic significance of immunohistochemical biomarkers in oral squamous cell carcinoma. Int J Oral Maxillofac Surg 2011; 40:298-307. [PMID: 21269808 DOI: 10.1016/j.ijom.2010.12.003] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2009] [Revised: 11/03/2010] [Accepted: 12/16/2010] [Indexed: 12/16/2022]
Abstract
Advances in understanding of the molecular mechanisms underlying oral squamous cell carcinoma (OSCC) have resulted in an increasing number of biomarkers that can be used to predict the behaviour of this disease. The authors conducted a literature review of studies examining the role of immunohistochemistry-based protein biomarkers in predicting OSCC outcome. Only articles published in PubMed-indexed journals over the past 5 years were considered. 22 molecular biomarkers were identified and classified into five groups based on their biological functions: cell cycle acceleration and proliferation; tumour suppression and apoptosis; hypoxia; angiogenesis; and cell adhesion and matrix degradation. The cell cycle acceleration and proliferation biomarkers showed the most divergent prognostic findings. Studies on tumour suppression and apoptosis biomarkers were the most prevalent. There were only a few studies examining molecular biomarkers of hypoxia and angiogenesis, and studies examining cell adhesion and matrix degradation biomarkers have shown that this group has the greatest potential for assessing prognostic parameters. Amongst the several proteins analysed, the immunohistochemical expression levels of epithelial growth factor receptor (EGFR), p53, and matrix metalloproteinases (MMPs) have demonstrated the greatest potential for survival prediction in OSCC, but this review demonstrates that their prognostic relevance is debatable and requires further standardisation.
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Affiliation(s)
- L R Oliveira
- Department of Pathology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
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34
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Abstract
Adrenocortical carcinomas (ACCs) are heterogeneous tumors with a poor prognosis. The rarity of this disorder causes a lack of treatment experience and material availability which is necessary to optimize existing treatments and to develop novel therapeutic strategies. Although surgery is still the treatment of choice, adjuvant therapies are urgently needed as the rate of recurrence for these tumors is high. In recent years molecular characterization of surgical tumor specimen has aided in the understanding of disease mechanisms and definition of therapeutic targets also in adrenocortical carcinoma. However, most of the functional properties of potential target molecules are still unpredictable from pure expression and sequence analysis. For functional studies of gene products, mouse models remain to be intensively utilized as an experimental system due to the similarity to humans with respect to genome organization, development and physiology. Here we give an overview on rodent models that have been described to either have adrenocortical tumors as part of their phenotype or have been utilized for therapeutic screens as adrenocortical tumor models.
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Affiliation(s)
- Constanze Hantel
- Department of Medicine, Endocrine Research, University Hospital Innenstadt, Ludwig Maximilians University, Ziemssenstr. 1, D-80336 Munich, Germany
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35
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Qiu P, Guan H, Dong P, Li S, Ho CT, Pan MH, McClements DJ, Xiao H. The p53-, Bax- and p21-dependent inhibition of colon cancer cell growth by 5-hydroxy polymethoxyflavones. Mol Nutr Food Res 2010; 55:613-22. [PMID: 21462329 DOI: 10.1002/mnfr.201000269] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2010] [Revised: 09/05/2010] [Accepted: 09/23/2010] [Indexed: 11/09/2022]
Abstract
SCOPE Previously, we reported that 5-hydroxy polymethoxyflavones (5OH-PMFs) isolated from orange, namely 5-hydroxy-6,7,8,3',4'-pentamethoxyflavone, 5-hydroxy-3,6,7,8,3',4'-hexamethoxyflavone (5HHMF) and 5-hydroxy-6,7,8,4'-tetramethoxyflavone (5HTMF), potently induced apoptosis and cell-cycle arrest in multiple human colon cancer cells. Herein, using isogenic variants of HCT116 human colon cancer cells, we investigated the effects of p53, Bax and p21 on the apoptosis and cell-cycle arrest induced by different 5OH-PMFs. METHODS AND RESULTS Annexin V/PI co-staining assay demonstrated that 5HHMF and 5HTMF significantly induced apoptosis in HCT116 (p53(+/+) ) cells but not in HCT116 (p53(-/-) ) cells. Furthermore, 5HHMF and 5HTMF significantly induced apoptosis in HCT116 (Bax(+/-) ) cells, whereas their pro-apoptotic effects on HCT116 (Bax(-/-) ) cells were marginal. All three 5OH-PMFs increased G0/G1 cell population of HCT116 (p53(+/+) ) cells, and these effects were abolished in HCT116 (p53(-/-) ) and HCT116 (p21(-/-) ) cells. Immunoblotting analysis showed that 5HHMF and 5HTMF increased the levels of cleaved caspase-3, cleaved PARP in both HCT116 (p53(+/+) ) and HCT116 (Bax(+/-) ) cells and these effects were much weaker in HCT116 (p53(-/-) ) and HCT116 (Bax(-/-) ) cells. CONCLUSION Our results demonstrated that 5OH-PMFs, especially 5HHMF and 5HTMF, induce apoptosis and cell-cycle arrest by p53-, Bax- and p21-dependent mechanism.
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Affiliation(s)
- Peiju Qiu
- Marine Drug and Food Institute, Ocean University of China, Qingdao, Shandong, P. R. China
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36
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D'agostino L, Giordano A. NSP 5a3a: a potential novel cancer target in head and neck carcinoma. Oncotarget 2010; 1:423-435. [PMID: 21311098 PMCID: PMC3248119 DOI: 10.18632/oncotarget.176] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2010] [Accepted: 09/29/2010] [Indexed: 11/25/2022] Open
Abstract
NSP 5a3a along with three other distinct though similar splice variants were initially identified corresponding to locus HCMOGT-1 on chromosome 17p11.2 [1]. Secondary structure analysis of the novel structural protein (NSP) isoforms revealed similarity to Spectrin like proteins containing coiled coil domains [1]. The NSP 5a3a isoform had been found to be highly expressed in-vitro in particular cancer cell lines while very low to un-detectable levels in normal body tissues [1]. Subsequent investigation of this isoform revealed its novel interaction with B23 [2], a multifunctional nucleolar protein involved in ribosome biogenesis, rRNA transcription, mitosis, cell growth control, and apoptosis [3]. Subsequent investigation, elucidated NSP 5a3a's potential involvement in cellular processes such as ribosome biogenesis and rRNA processing by validating NSP 5a3a's novel interaction with B23 and ribonuclear protein hnRNP-L possibly implicating NSP 5a3a's involvement in cellular activities such as RNA metabolism and processing [4]. In this preliminary investigation, we wanted to observe the effect that over-expressing NSP 5a3a may have on cell cycle and its potential application in cancer treatment in aggressive cancers such as head and neck carcinomas. Over-expressed NSP 5a3a in HN30 cells induced a significant degree of apoptosis, an average of a 10.85 fold increase compared to controls 3 days post-transfection. This effect was more significant then the apoptosis observed between Fadu cells over-expressing NSP 5a3a and its controls. Though, the apoptosis induced in the WI38 control cell line showed an average of a 13.2 fold increase between treated and controls comparable to the HN30 cell line 3 days post-transfection. Molecular analysis indentified a novel p73 dependent mechanism independent of p53 and caspase 3 activity through which NSP 5a3a is inducing apoptosis. We propose NSP 5a3a as a potential therapeutic target for site directed cancer treatment in perhaps certain head and neck carcinomas by induction of apoptosis.
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Banerjee M, Singh P, Panda D. Curcumin suppresses the dynamic instability of microtubules, activates the mitotic checkpoint and induces apoptosis in MCF-7 cells. FEBS J 2010; 277:3437-48. [PMID: 20646066 DOI: 10.1111/j.1742-4658.2010.07750.x] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
In this study, curcumin, a potential anticancer agent, was found to dampen the dynamic instability of individual microtubules in living MCF-7 cells. It strongly reduced the rate and extent of shortening states, and modestly reduced the rate and extent of growing states. In addition, curcumin decreased the fraction of time microtubules spent in the growing state and strongly increased the time microtubules spent in the pause state. Brief treatment with curcumin depolymerized mitotic microtubules, perturbed microtubule-kinetochore attachment and disturbed the mitotic spindle structure. Curcumin also perturbed the localization of the kinesin protein Eg5 and induced monopolar spindle formation. Further, curcumin increased the accumulation of Mad2 and BubR1 at the kinetochores, indicating that it activated the mitotic checkpoint. In addition, curcumin treatment increased the metaphase/anaphase ratio, indicating that it can delay mitotic progression from the metaphase to anaphase. We provide evidence suggesting that the affected cells underwent apoptosis via the p53-dependent apoptotic pathway. The results support the idea that kinetic stabilization of microtubule dynamics assists in the nuclear translocation of p53. Curcumin exerted additive effects when combined with vinblastine, a microtubule depolymerizing drug, whereas the combination of curcumin with paclitaxel, a microtubule-stabilizing drug, produced an antagonistic effect on the inhibition of MCF-7 cell proliferation. The results together suggested that curcumin inhibited MCF-7 cell proliferation by inhibiting the assembly dynamics of microtubules.
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Affiliation(s)
- Mithu Banerjee
- Department of Biosciences & Bioengineering, Indian Institute of Technology Bombay, Mumbai, India
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Cottage CT, Bailey B, Fischer KM, Avitabile D, Avitable D, Collins B, Tuck S, Quijada P, Gude N, Alvarez R, Muraski J, Sussman MA. Cardiac progenitor cell cycling stimulated by pim-1 kinase. Circ Res 2010; 106:891-901. [PMID: 20075333 DOI: 10.1161/circresaha.109.208629] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
RATIONALE Cardioprotective effects of Pim-1 kinase have been previously reported but the underlying mechanistic basis may involve a combination of cellular and molecular mechanisms that remain unresolved. The elucidation of the mechanistic basis for Pim-1 mediated cardioprotection provides important insights for designing therapeutic interventional strategies to treat heart disease. OBJECTIVE Effects of cardiac-specific Pim-1 kinase expression on the cardiac progenitor cell (CPC) population were examined to determine whether Pim-1 mediates beneficial effects through augmenting CPC activity. METHODS AND RESULTS Transgenic mice created with cardiac-specific Pim-1 overexpression (Pim-wt) exhibit enhanced Pim-1 expression in both cardiomyocytes and CPCs, both of which show increased proliferative activity assessed using 5-bromodeoxyuridine (BrdU), Ki-67, and c-Myc relative to nontransgenic controls. However, the total number of CPCs was not increased in the Pim-wt hearts during normal postnatal growth or after infarction challenge. These results suggest that Pim-1 overexpression leads to asymmetric division resulting in maintenance of the CPC population. Localization and quantitation of cell fate determinants Numb and alpha-adaptin by confocal microscopy were used to assess frequency of asymmetric division in the CPC population. Polarization of Numb in mitotic phospho-histone positive cells demonstrates asymmetric division in 65% of the CPC population in hearts of Pim-wt mice versus 26% in nontransgenic hearts after infarction challenge. Similarly, Pim-wt hearts had fewer cells with uniform alpha-adaptin staining indicative of symmetrically dividing CPCs, with 36% of the CPCs versus 73% in nontransgenic sections. CONCLUSIONS These findings define a mechanistic basis for enhanced myocardial regeneration in transgenic mice overexpressing Pim-1 kinase.
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Affiliation(s)
- Christopher T Cottage
- San Diego State Heart Institute, San Diego State University, 5500 Campanile Dr, San Diego, CA 92182, USA
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