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Levina AS, Repkova MN, Netesova NA, Ternovoi VA, Mazurkov OY, Filippova EI, Mazurkova NA, Zarytova VF. Substantial Antiviral Potential of Deoxyribozymes Fixed on Anatase Nanoparticles Against Influenza A Viruses in vitro and in vivo. J Pharm Sci 2024; 113:1202-1208. [PMID: 37879408 DOI: 10.1016/j.xphs.2023.10.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 10/20/2023] [Accepted: 10/20/2023] [Indexed: 10/27/2023]
Abstract
Influenza A viruses (IAV) are a high threat to humanity because of a lack of proper effective antiviral drugs and resistance of viruses to existing vaccines. We describe the sufficient anti-IAV effect of Ans/PL-Dz nanocomposites that contain deoxyribozymes (Dz) immobilized on anatase TiO2 nanoparticles (Ans) through polylysine linker (PL). The Dz-containing nanocomposites appear to be more efficient than the Ans/PL-ODN nanocomposites that contain common oligodeoxyribonucleotides (ODN) targeted to the same RNA regions of the viral genome. The simultaneous use of nanocomposites that contain Dz and ODN, which are targeted to different sites of viral RNA provides a higher overall effect than the independent action of each of them (synergism). The inhibition of IAV with the proposed nanocomposites was shown to be effective, sequence-specific, and dose-dependent. The most efficient Ans/PL-Dz nanocomposite exhibited a high antiviral effect in vivo on mice models. The efficiency of IAV inhibition with this nanocomposite in vitro and in vivo is higher than that for the approved antiflu drug oseltamivir. The results open the prospect of creating a unique antiviral agent suitable for IAV suppression.
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Affiliation(s)
- Asya S Levina
- Institute of Chemical Biology and Fundamental Medicine, Siberian branch of RAS, pr. Lavrent'eva 8, Novosibirsk 630090, Russia.
| | - Marina N Repkova
- Institute of Chemical Biology and Fundamental Medicine, Siberian branch of RAS, pr. Lavrent'eva 8, Novosibirsk 630090, Russia
| | - Nina A Netesova
- FBRI State Research Center of Virology and Biotechnology "Vector", Koltsovo, Novosibirsk region 630559, Russia
| | - Vladimir A Ternovoi
- FBRI State Research Center of Virology and Biotechnology "Vector", Koltsovo, Novosibirsk region 630559, Russia
| | - Oleg Yu Mazurkov
- FBRI State Research Center of Virology and Biotechnology "Vector", Koltsovo, Novosibirsk region 630559, Russia
| | - Ekaterina I Filippova
- FBRI State Research Center of Virology and Biotechnology "Vector", Koltsovo, Novosibirsk region 630559, Russia
| | - Natalia A Mazurkova
- FBRI State Research Center of Virology and Biotechnology "Vector", Koltsovo, Novosibirsk region 630559, Russia
| | - Valentina F Zarytova
- Institute of Chemical Biology and Fundamental Medicine, Siberian branch of RAS, pr. Lavrent'eva 8, Novosibirsk 630090, Russia
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Xie J, Mo T, Li R, Zhang H, Liang G, Ma T, Chen J, Xie H, Wen X, Hu T, Xian Z, Pan W. The m 7G Reader NCBP2 Promotes Pancreatic Cancer Progression by Upregulating MAPK/ERK Signaling. Cancers (Basel) 2023; 15:5454. [PMID: 38001714 PMCID: PMC10670634 DOI: 10.3390/cancers15225454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 11/02/2023] [Accepted: 11/03/2023] [Indexed: 11/26/2023] Open
Abstract
PDAC is one of the most common malignant tumors worldwide. The difficulty of early diagnosis and lack of effective treatment are the main reasons for its poor prognosis. Therefore, it is urgent to identify novel diagnostic and therapeutic targets for PDAC patients. The m7G methylation is a common type of RNA modification that plays a pivotal role in regulating tumor development. However, the correlation between m7G regulatory genes and PDAC progression remains unclear. By integrating gene expression and related clinical information of PDAC patients from TCGA and GEO cohorts, m7G binding protein NCBP2 was found to be highly expressed in PDAC patients. More importantly, PDAC patients with high NCBP2 expression had a worse prognosis. Stable NCBP2-knockdown and overexpression PDAC cell lines were constructed to further perform in-vitro and in-vivo experiments. NCBP2-knockdown significantly inhibited PDAC cell proliferation, while overexpression of NCBP2 dramatically promoted PDAC cell growth. Mechanistically, NCBP2 enhanced the translation of c-JUN, which in turn activated MEK/ERK signaling to promote PDAC progression. In conclusion, our study reveals that m7G reader NCBP2 promotes PDAC progression by activating MEK/ERK pathway, which could serve as a novel therapeutic target for PDAC patients.
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Affiliation(s)
- Jiancong Xie
- Department of General Surgery (Pancreatic Hepatobiliary Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China; (J.X.); (H.Z.); (T.M.)
| | - Taiwei Mo
- Department of General Surgery, The First Affiliated Hospital of Jinan University, Guangzhou 510630, China;
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China; (R.L.); (G.L.); (J.C.); (H.X.); (X.W.); (T.H.)
| | - Ruibing Li
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China; (R.L.); (G.L.); (J.C.); (H.X.); (X.W.); (T.H.)
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China
- Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China
| | - Hao Zhang
- Department of General Surgery (Pancreatic Hepatobiliary Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China; (J.X.); (H.Z.); (T.M.)
| | - Guanzhan Liang
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China; (R.L.); (G.L.); (J.C.); (H.X.); (X.W.); (T.H.)
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China
- Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China
| | - Tao Ma
- Department of General Surgery (Pancreatic Hepatobiliary Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China; (J.X.); (H.Z.); (T.M.)
| | - Jing Chen
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China; (R.L.); (G.L.); (J.C.); (H.X.); (X.W.); (T.H.)
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China
- Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China
| | - Hanlin Xie
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China; (R.L.); (G.L.); (J.C.); (H.X.); (X.W.); (T.H.)
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China
- Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China
| | - Xiaofeng Wen
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China; (R.L.); (G.L.); (J.C.); (H.X.); (X.W.); (T.H.)
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China
- Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China
| | - Tuo Hu
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China; (R.L.); (G.L.); (J.C.); (H.X.); (X.W.); (T.H.)
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China
- Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China
| | - Zhenyu Xian
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China; (R.L.); (G.L.); (J.C.); (H.X.); (X.W.); (T.H.)
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China
- Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China
| | - Weidong Pan
- Department of General Surgery (Pancreatic Hepatobiliary Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China; (J.X.); (H.Z.); (T.M.)
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3
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Xiao L, Zhao Y, Yang M, Luan G, Du T, Deng S, Jia X. A promising nucleic acid therapy drug: DNAzymes and its delivery system. Front Mol Biosci 2023; 10:1270101. [PMID: 37753371 PMCID: PMC10518456 DOI: 10.3389/fmolb.2023.1270101] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 08/29/2023] [Indexed: 09/28/2023] Open
Abstract
Based on the development of nucleic acid therapeutic drugs, DNAzymes obtained through in vitro selection technology in 1994 are gradually being sought. DNAzymes are single-stranded DNA molecules with catalytic function, which specifically cleave RNA under the action of metal ions. Various in vivo and in vitro models have recently demonstrated that DNAzymes can target related genes in cancer, cardiovascular disease, bacterial and viral infection, and central nervous system disease. Compared with other nucleic acid therapy drugs, DNAzymes have gained more attention due to their excellent cutting efficiency, high stability, and low cost. Here, We first briefly reviewed the development and characteristics of DNAzymes, then discussed disease-targeting inhibition model of DNAzymes, hoping to provide new insights and ways for disease treatment. Finally, DNAzymes were still subject to some restrictions in practical applications, including low cell uptake efficiency, nuclease degradation and interference from other biological matrices. We discussed the latest delivery strategy of DNAzymes, among which lipid nanoparticles have recently received widespread attention due to the successful delivery of the COVID-19 mRNA vaccine, which provides the possibility for the subsequent clinical application of DNAzymes. In addition, the future development of DNAzymes was prospected.
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Affiliation(s)
- Lang Xiao
- School of Basic Medical Sciences, Chengdu Medical College, Chengdu, Sichuan, China
- Sichuan Key Laboratory of Noncoding RNA and Drugs, Chengdu Medical College, Chengdu, Sichuan, China
| | - Yan Zhao
- Life Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan, China
| | - Meng Yang
- School of Basic Medical Sciences, Chengdu Medical College, Chengdu, Sichuan, China
- Sichuan Key Laboratory of Noncoding RNA and Drugs, Chengdu Medical College, Chengdu, Sichuan, China
| | - Guangxin Luan
- School of Basic Medical Sciences, Chengdu Medical College, Chengdu, Sichuan, China
- Sichuan Key Laboratory of Noncoding RNA and Drugs, Chengdu Medical College, Chengdu, Sichuan, China
| | - Ting Du
- School of Basic Medical Sciences, Chengdu Medical College, Chengdu, Sichuan, China
- Sichuan Key Laboratory of Noncoding RNA and Drugs, Chengdu Medical College, Chengdu, Sichuan, China
| | - Shanshan Deng
- School of Basic Medical Sciences, Chengdu Medical College, Chengdu, Sichuan, China
- Sichuan Key Laboratory of Noncoding RNA and Drugs, Chengdu Medical College, Chengdu, Sichuan, China
| | - Xu Jia
- School of Basic Medical Sciences, Chengdu Medical College, Chengdu, Sichuan, China
- Sichuan Key Laboratory of Noncoding RNA and Drugs, Chengdu Medical College, Chengdu, Sichuan, China
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Gou B, Chu X, Xiao Y, Liu P, Zhang H, Gao Z, Song M. Single-Cell Analysis Reveals Transcriptomic Reprogramming in Aging Cardiovascular Endothelial Cells. Front Cardiovasc Med 2022; 9:900978. [PMID: 35615560 PMCID: PMC9124831 DOI: 10.3389/fcvm.2022.900978] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 04/04/2022] [Indexed: 11/18/2022] Open
Abstract
The senescence of cardiovascular endothelial cells (ECs) is a major risk factor in the development of aging-related cardiovascular diseases. However, the molecular dynamics in cardiovascular EC aging are poorly understood. Here, we characterized the transcriptomic landscape of cardiovascular ECs during aging and observed that ribosome biogenesis, inflammation, apoptosis and angiogenesis-related genes and pathways changed with age. We also highlighted the importance of collagen genes in the crosstalk between ECs and other cell types in cardiovascular aging. Moreover, transcriptional regulatory network analysis revealed Jun as a candidate transcription factor involved in murine cardiovascular senescence and we validated the upregulation of Jun in aged cardiovascular ECs both in vitro and in vivo. Altogether, our study reveals the transcriptomic reprogramming in the aging murine cardiovascular ECs, which deepens the understanding of the molecular mechanisms of cardiovascular aging and provides new insights into potential therapeutic targets against age-related cardiovascular diseases.
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Affiliation(s)
- Bo Gou
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Xiaojing Chu
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, China
| | - Yi Xiao
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Pinxuan Liu
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Hao Zhang
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Zeyu Gao
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, China
| | - Moshi Song
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
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5
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DNAzymes, Novel Therapeutic Agents in Cancer Therapy: A Review of Concepts to Applications. J Nucleic Acids 2021; 2021:9365081. [PMID: 34760318 PMCID: PMC8575636 DOI: 10.1155/2021/9365081] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 10/06/2021] [Indexed: 11/17/2022] Open
Abstract
The past few decades have witnessed a rapid evolution in cancer drug research which is aimed at developing active biological interventions to regulate cancer-specific molecular targets. Nucleic acid-based therapeutics, including ribozymes, antisense oligonucleotides, small interference RNA (siRNA), aptamer, and DNAzymes, have emerged as promising candidates regulating cancer-specific genes at either the transcriptional or posttranscriptional level. Gene-specific catalytic DNA molecules, or DNAzymes, have shown promise as a therapeutic intervention against cancer in various in vitro and in vivo models, expediting towards clinical applications. DNAzymes are single-stranded catalytic DNA that has not been observed in nature, and they are synthesized through in vitro selection processes from a large pool of random DNA libraries. The intrinsic properties of DNAzymes like small molecular weight, higher stability, excellent programmability, diversity, and low cost have brought them to the forefront of the nucleic acid-based therapeutic arsenal available for cancers. In recent years, considerable efforts have been undertaken to assess a variety of DNAzymes against different cancers. However, their therapeutic application is constrained by the low delivery efficiency, cellular uptake, and target detection within the tumour microenvironment. Thus, there is a pursuit to identify efficient delivery methods in vivo before the full potential of DNAzymes in cancer therapy is realized. In this light, a review of the recent advances in the use of DNAzymes against cancers in preclinical and clinical settings is valuable to understand its potential as effective cancer therapy. We have thus sought to firstly provide a brief overview of construction and recent improvements in the design of DNAzymes. Secondly, this review stipulates the efficacy, safety, and tolerability of DNAzymes developed against major hallmarks of cancers tested in preclinical and clinical settings. Lastly, the recent advances in DNAzyme delivery systems along with the challenges and prospects for the clinical application of DNAzymes as cancer therapy are also discussed.
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Yoshitomi Y, Ikeda T, Saito-Takatsuji H, Yonekura H. Emerging Role of AP-1 Transcription Factor JunB in Angiogenesis and Vascular Development. Int J Mol Sci 2021; 22:ijms22062804. [PMID: 33802099 PMCID: PMC8000613 DOI: 10.3390/ijms22062804] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 03/06/2021] [Accepted: 03/09/2021] [Indexed: 02/07/2023] Open
Abstract
Blood vessels are essential for the formation and maintenance of almost all functional tissues. They play fundamental roles in the supply of oxygen and nutrition, as well as development and morphogenesis. Vascular endothelial cells are the main factor in blood vessel formation. Recently, research findings showed heterogeneity in vascular endothelial cells in different tissue/organs. Endothelial cells alter their gene expressions depending on their cell fate or angiogenic states of vascular development in normal and pathological processes. Studies on gene regulation in endothelial cells demonstrated that the activator protein 1 (AP-1) transcription factors are implicated in angiogenesis and vascular development. In particular, it has been revealed that JunB (a member of the AP-1 transcription factor family) is transiently induced in endothelial cells at the angiogenic frontier and controls them on tip cells specification during vascular development. Moreover, JunB plays a role in tissue-specific vascular maturation processes during neurovascular interaction in mouse embryonic skin and retina vasculatures. Thus, JunB appears to be a new angiogenic factor that induces endothelial cell migration and sprouting particularly in neurovascular interaction during vascular development. In this review, we discuss the recently identified role of JunB in endothelial cells and blood vessel formation.
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Rosenbach H, Victor J, Etzkorn M, Steger G, Riesner D, Span I. Molecular Features and Metal Ions That Influence 10-23 DNAzyme Activity. Molecules 2020; 25:E3100. [PMID: 32646019 PMCID: PMC7412337 DOI: 10.3390/molecules25133100] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 06/25/2020] [Accepted: 07/03/2020] [Indexed: 12/17/2022] Open
Abstract
Deoxyribozymes (DNAzymes) with RNA hydrolysis activity have a tremendous potential as gene suppression agents for therapeutic applications. The most extensively studied representative is the 10-23 DNAzyme consisting of a catalytic loop and two substrate binding arms that can be designed to bind and cleave the RNA sequence of interest. The RNA substrate is cleaved between central purine and pyrimidine nucleotides. The activity of this DNAzyme in vitro is considerably higher than in vivo, which was suggested to be related to its divalent cation dependency. Understanding the mechanism of DNAzyme catalysis is hindered by the absence of structural information. Numerous biological studies, however, provide comprehensive insights into the role of particular deoxynucleotides and functional groups in DNAzymes. Here we provide an overview of the thermodynamic properties, the impact of nucleobase modifications within the catalytic loop, and the role of different metal ions in catalysis. We point out features that will be helpful in developing novel strategies for structure determination and to understand the mechanism of the 10-23 DNAzyme. Consideration of these features will enable to develop improved strategies for structure determination and to understand the mechanism of the 10-23 DNAzyme. These insights provide the basis for improving activity in cells and pave the way for developing DNAzyme applications.
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Affiliation(s)
- Hannah Rosenbach
- Institut für Physikalische Biologie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, 40225 Duesseldorf, Germany; (H.R.); (J.V.); (M.E.); (G.S.); (D.R.)
| | - Julian Victor
- Institut für Physikalische Biologie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, 40225 Duesseldorf, Germany; (H.R.); (J.V.); (M.E.); (G.S.); (D.R.)
| | - Manuel Etzkorn
- Institut für Physikalische Biologie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, 40225 Duesseldorf, Germany; (H.R.); (J.V.); (M.E.); (G.S.); (D.R.)
- Institute of Biological Information Processing (IBI-7: Structural Biochemistry), Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany
| | - Gerhard Steger
- Institut für Physikalische Biologie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, 40225 Duesseldorf, Germany; (H.R.); (J.V.); (M.E.); (G.S.); (D.R.)
| | - Detlev Riesner
- Institut für Physikalische Biologie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, 40225 Duesseldorf, Germany; (H.R.); (J.V.); (M.E.); (G.S.); (D.R.)
| | - Ingrid Span
- Institut für Physikalische Biologie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, 40225 Duesseldorf, Germany; (H.R.); (J.V.); (M.E.); (G.S.); (D.R.)
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Strassheim D, Karoor V, Nijmeh H, Weston P, Lapel M, Schaack J, Sullivan T, Dempsey EC, Stenmark KR, Gerasimovskaya E. c-Jun, Foxo3a, and c-Myc Transcription Factors are Key Regulators of ATP-Mediated Angiogenic Responses in Pulmonary Artery Vasa Vasorum Endothelial Cells. Cells 2020; 9:cells9020416. [PMID: 32054096 PMCID: PMC7072142 DOI: 10.3390/cells9020416] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 02/06/2020] [Accepted: 02/07/2020] [Indexed: 12/14/2022] Open
Abstract
Angiogenic vasa vasorum (VV) expansion plays an essential role in the pathogenesis of hypoxia-induced pulmonary hypertension (PH), a cardiovascular disease. We previously showed that extracellular ATP released under hypoxic conditions is an autocrine/paracrine, the angiogenic factor for pulmonary artery (PA) VV endothelial cells (VVECs), acting via P2Y purinergic receptors (P2YR) and the Phosphoinositide 3-kinase (PI3K)-Akt-Mammalian Target of Rapamycin (mTOR) signaling. To further elucidate the molecular mechanisms of ATP-mediated VV angiogenesis, we determined the profile of ATP-inducible transcription factors (TFs) in VVECs using a TranSignal protein/DNA array. C-Jun, c-Myc, and Foxo3 were found to be upregulated in most VVEC populations and formed nodes connecting several signaling networks. siRNA-mediated knockdown (KD) of these TFs revealed their critical role in ATP-induced VVEC angiogenic responses and the regulation of downstream targets involved in tissue remodeling, cell cycle control, expression of endothelial markers, cell adhesion, and junction proteins. Our results showed that c-Jun was required for the expression of ATP-stimulated angiogenic genes, c-Myc was repressive to anti-angiogenic genes, and Foxo3a predominantly controlled the expression of anti-apoptotic and junctional proteins. The findings from our study suggest that pharmacological targeting of the components of P2YR-PI3K-Akt-mTOR axis and specific TFs reduced ATP-mediated VVEC angiogenic response and may have a potential translational significance in attenuating pathological vascular remodeling.
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Affiliation(s)
- Derek Strassheim
- Department of Medicine Cardiovascular and Pulmonary Research Laboratory, University of Colorado Denver, Aurora, CO 80045, USA; (D.S.); (V.K.); (T.S.); (E.C.D.); (K.R.S.)
| | - Vijaya Karoor
- Department of Medicine Cardiovascular and Pulmonary Research Laboratory, University of Colorado Denver, Aurora, CO 80045, USA; (D.S.); (V.K.); (T.S.); (E.C.D.); (K.R.S.)
| | - Hala Nijmeh
- Department of Pediatrics, Division of Critical Care Medicine, University of Colorado Denver, Aurora, CO 80045, USA; (H.N.); (P.W.); (M.L.)
| | - Philip Weston
- Department of Pediatrics, Division of Critical Care Medicine, University of Colorado Denver, Aurora, CO 80045, USA; (H.N.); (P.W.); (M.L.)
| | - Martin Lapel
- Department of Pediatrics, Division of Critical Care Medicine, University of Colorado Denver, Aurora, CO 80045, USA; (H.N.); (P.W.); (M.L.)
| | - Jerome Schaack
- Department of Microbiology, University of Colorado Denver, Aurora, CO 80045, USA;
| | - Timothy Sullivan
- Department of Medicine Cardiovascular and Pulmonary Research Laboratory, University of Colorado Denver, Aurora, CO 80045, USA; (D.S.); (V.K.); (T.S.); (E.C.D.); (K.R.S.)
| | - Edward C. Dempsey
- Department of Medicine Cardiovascular and Pulmonary Research Laboratory, University of Colorado Denver, Aurora, CO 80045, USA; (D.S.); (V.K.); (T.S.); (E.C.D.); (K.R.S.)
- Rocky Mountain Regional VA Medical Center, Aurora, CO 80045, USA
| | - Kurt R. Stenmark
- Department of Medicine Cardiovascular and Pulmonary Research Laboratory, University of Colorado Denver, Aurora, CO 80045, USA; (D.S.); (V.K.); (T.S.); (E.C.D.); (K.R.S.)
- Department of Pediatrics, Division of Critical Care Medicine, University of Colorado Denver, Aurora, CO 80045, USA; (H.N.); (P.W.); (M.L.)
| | - Evgenia Gerasimovskaya
- Department of Medicine Cardiovascular and Pulmonary Research Laboratory, University of Colorado Denver, Aurora, CO 80045, USA; (D.S.); (V.K.); (T.S.); (E.C.D.); (K.R.S.)
- Department of Pediatrics, Division of Critical Care Medicine, University of Colorado Denver, Aurora, CO 80045, USA; (H.N.); (P.W.); (M.L.)
- Correspondence: ; Tel.: +1-303-724-5614
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Khachigian LM. Deoxyribozymes as Catalytic Nanotherapeutic Agents. Cancer Res 2019; 79:879-888. [DOI: 10.1158/0008-5472.can-18-2474] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 10/24/2018] [Accepted: 12/14/2018] [Indexed: 11/16/2022]
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10
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Meng L, Ma W, Lin S, Shi S, Li Y, Lin Y. Tetrahedral DNA Nanostructure-Delivered DNAzyme for Gene Silencing to Suppress Cell Growth. ACS APPLIED MATERIALS & INTERFACES 2019; 11:6850-6857. [PMID: 30698411 DOI: 10.1021/acsami.8b22444] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Lingxian Meng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
| | - Wenjuan Ma
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
| | - Shiyu Lin
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
| | - Sirong Shi
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
| | - Yanjing Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
| | - Yunfeng Lin
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
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11
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Ibrahim SAEF, Abudu A, Johnson E, Aftab N, Conrad S, Fluck M. The role of AP-1 in self-sufficient proliferation and migration of cancer cells and its potential impact on an autocrine/paracrine loop. Oncotarget 2018; 9:34259-34278. [PMID: 30344941 PMCID: PMC6188139 DOI: 10.18632/oncotarget.26047] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 08/13/2018] [Indexed: 12/11/2022] Open
Abstract
Activating protein-1 (AP-1) family members, especially Fra-1 and c-Jun, are highly expressed in invasive cancers and can mediate enhanced migration and proliferation. The aim of this study was to explore the significance of elevated levels of AP-1 family members under conditions that restrict growth. We observed that invasive MDA-MB-231 cells express high levels of Fra-1, c-Jun, and Jun-D during serum starvation and throughout the cell cycle compared to non-tumorigenic and non-invasive cell lines. We then analyzed Fra-1 levels in additional breast and other cancer cell lines. We found breast and lung cancer cells with higher levels of Fra-1 during serum starvation had relatively higher ability to proliferate and migrate under these conditions. Utilizing a dominant negative construct of AP-1, we demonstrated that proliferation and migration of MDA-MB-231 in the absence of serum requires AP-1 activity. Finally, we observed that MDA-MB-231 cells secrete factors(s) that induce Fra-1 expression and migration in non-tumorigenic and non-metastatic cells and that both the expression of and response to these factors require AP-1 activity. These results suggest the presence of an autocrine/paracrine loop that maintains high Fra-1 levels in aggressive cancer cells, enhancing their proliferative and metastatic ability and affecting neighbors to alter the tumor environment.
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Affiliation(s)
- Sherif Abd El-Fattah Ibrahim
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, MI, USA.,Department of Histology and Cell Biology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Aierken Abudu
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, MI, USA
| | - Eugenia Johnson
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, MI, USA
| | - Neelum Aftab
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, MI, USA
| | - Susan Conrad
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, MI, USA
| | - Michele Fluck
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, MI, USA
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12
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Cai H, Cho EA, Li Y, Sockler J, Parish CR, Chong BH, Edwards J, Dodds TJ, Ferguson PM, Wilmott JS, Scolyer RA, Halliday GM, Khachigian LM. Melanoma protective antitumor immunity activated by catalytic DNA. Oncogene 2018; 37:5115-5126. [DOI: 10.1038/s41388-018-0306-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 02/26/2018] [Accepted: 04/17/2018] [Indexed: 12/19/2022]
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13
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Ibrahim Abd El-fattah S, Abudu A, Jonhson E, Aftab N, Fluck M. The role of AP-1 in self-sufficient proliferation and migration of cancer cells and its potential impact on an autocrine/paracrine loop.. [DOI: 10.1101/271536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
ABSTRACTThe activating protein-1 (AP-1) family members are highly expressed in invasive cancers, but the consequences of this are not completely understood. The aim of this study was to explore the significance of elevated levels of AP-1 family members under conditions that restrict growth. We observed that invasive MDA-MB-231 cells express high levels of Fra-1, c-Jun and, Jun-D during serum starvation and throughout the cell cycle compared to non-tumorigenic and non-invasive cell lines. We then analyzed Fra-1 levels in additional breast and other cancer cell lines. We found a correlation between the high levels of Fra-1 during serum starvation and the ability of the cells to proliferate and migrate under these conditions. Utilizing a dominant negative construct of AP-1, we demonstrated that proliferation and migration of MDA-MB-231 in the absence of serum requires AP-1 activity. Finally, we observed that MDA-MB-231 cells secrete factors(s) that induce Fra-1 expression and migration in non-tumorigenic and non-metastatic cells and that both the expression of and response to these factors require AP-1 activity. These results suggest the presence of an autocrine/paracrine loop that maintains high Fra-1 levels in aggressive cancer cells, enhancing their proliferative and metastatic ability and affecting neighbors to alter the tumor environment.
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14
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Kole K, Scheenen W, Tiesinga P, Celikel T. Cellular diversity of the somatosensory cortical map plasticity. Neurosci Biobehav Rev 2017; 84:100-115. [PMID: 29183683 DOI: 10.1016/j.neubiorev.2017.11.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 11/21/2017] [Accepted: 11/21/2017] [Indexed: 01/23/2023]
Abstract
Sensory maps are representations of the sensory epithelia in the brain. Despite the intuitive explanatory power behind sensory maps as being neuronal precursors to sensory perception, and sensory cortical plasticity as a neural correlate of perceptual learning, molecular mechanisms that regulate map plasticity are not well understood. Here we perform a meta-analysis of transcriptional and translational changes during altered whisker use to nominate the major molecular correlates of experience-dependent map plasticity in the barrel cortex. We argue that brain plasticity is a systems level response, involving all cell classes, from neuron and glia to non-neuronal cells including endothelia. Using molecular pathway analysis, we further propose a gene regulatory network that could couple activity dependent changes in neurons to adaptive changes in neurovasculature, and finally we show that transcriptional regulations observed in major brain disorders target genes that are modulated by altered sensory experience. Thus, understanding the molecular mechanisms of experience-dependent plasticity of sensory maps might help to unravel the cellular events that shape brain plasticity in health and disease.
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Affiliation(s)
- Koen Kole
- Department of Neurophysiology, Donders Institute for Brain, Cognition, and Behaviour, Radboud University, Nijmegen, The Netherlands; Department of Neuroinformatics, Donders Institute for Brain, Cognition, and Behaviour, Radboud University, Nijmegen, The Netherlands.
| | - Wim Scheenen
- Department of Neurophysiology, Donders Institute for Brain, Cognition, and Behaviour, Radboud University, Nijmegen, The Netherlands
| | - Paul Tiesinga
- Department of Neuroinformatics, Donders Institute for Brain, Cognition, and Behaviour, Radboud University, Nijmegen, The Netherlands
| | - Tansu Celikel
- Department of Neurophysiology, Donders Institute for Brain, Cognition, and Behaviour, Radboud University, Nijmegen, The Netherlands
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15
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Zong S, Li W, Li H, Han S, Liu S, Shi Q, Hou F. Identification of hypoxia-regulated angiogenic genes in colorectal cancer. Biochem Biophys Res Commun 2017; 493:461-467. [PMID: 28928094 DOI: 10.1016/j.bbrc.2017.08.169] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 08/31/2017] [Indexed: 01/11/2023]
Abstract
The tumour hypoxia would trigger the angiogenesis switch for survival, and increase the ability of cancer cells to invade and metastasis. However, hypoxia regulated genes that invovled in angiogenesis in colorectal cancer (CRC) have not been explored in detail. The aim of this study was to explore angiogenic genes under hypoxia condition in CRC. Here, we found that endothelial cells tube formation and cancer cells invasion ability were promoted even under chronic hypoxia condition (72 h) in colon adenocarcinoma HCT-116 cells. Then, we explored the differentially expressed genes (DEGs) under chronic hypoxia condition by microarray from Gene Expression Omnibus (GEO) database. Subsequent bioinformatic analysis identified 17 genes that invovled in angiogenesis, blood vessel development, blood vessel morphgensis, vascular development. of these genes, VEGF-A, Smad7, Jun, IL-8, CXCR-4, PDGF-A, TGF-A, ANGPTL-4 expression levels up-regulated under hypoxia condition. Additionally, the gene expression level in acute hypoxia (24 h) was significantly higher than chronic condition (72 h). Finally, knockdown of hypoxia inducible factor (HIF-1α) by shRNA reversed the role of Smad7, CXCR-4, PDGF-A, TGF-A and ANGPTL-4 overexpression in HCT-116 cells, these findings provide the potential angiogenic targets for the treatment of colorectal cancer.
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Affiliation(s)
- Shaoqi Zong
- Department of Geriatrics, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200071, China.
| | - Wen Li
- Department of Geriatrics, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200071, China.
| | - Hongjia Li
- Department of Geriatrics, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200071, China
| | - Susu Han
- Department of Geriatrics, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200071, China
| | - Shanshan Liu
- Department of Geriatrics, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200071, China
| | - Qi Shi
- Department of Geriatrics, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200071, China.
| | - Fenggang Hou
- Department of Geriatrics, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200071, China.
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16
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APE1 modulates cellular responses to organophosphate pesticide-induced oxidative damage in non-small cell lung carcinoma A549 cells. Mol Cell Biochem 2017; 441:201-216. [PMID: 28887667 DOI: 10.1007/s11010-017-3186-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 09/01/2017] [Indexed: 12/15/2022]
Abstract
Monocrotophos (MCP) and chlorpyrifos (CP) are widely used organophosphate pesticides (OPPs), speculated to be linked with human pathologies including cancer. Owing to the fact that lung cells are most vulnerable to the environmental toxins, the development and progression of lung cancer can be caused by the exposure of OPPs. The present study investigates the oxidative DNA damage response evoked by MCP and CP in human non-small cell lung carcinoma A549 cells. A549 cells were exposed to MCP and CP; cytotoxicity and reactive oxygen species (ROS) generation were measured to select the non-toxic dose. In order to establish whether MCP and CP can initiate the DNA repair and cell survival signalling pathways in A549 cells, qRT-PCR and Western blotting techniques were used to investigate the mRNA and protein expression levels of DNA base excision repair (BER)-pathway enzymes and transcription factors (TFs) involved in cell survival mechanisms. A significant increase in cell viability and ROS generation was observed when exposed to low and moderate doses of MCP and CP at different time points (24, 48 and 72 h) studied. A549 cells displayed a dose-dependent accumulation of apurinic/apyrimidinic (AP) sites after 24 h exposure to MCP advocating for the activation of AP endonuclease-mediated DNA BER-pathway. Cellular responses to MCP- and CP-induced oxidative stress resulted in an imbalance in the mRNA and protein expression of BER-pathway enzymes, viz. PARP1, OGG1, APE1, XRCC1, DNA pol β and DNA ligase III α at different time points. The treatment of OPPs resulted in the upregulation of TFs, viz. Nrf2, c-jun, phospho-c-jun and inducible nitric oxide synthase. Immunofluorescent confocal imaging of A549 cells indicated that MCP and CP induces the translocation of APE1 within the cytoplasm at an early 6 h time point, whereas it promotes nuclear localization after 24 h of treatment, which suggests that APE1 subcellular distribution is dynamically regulated in response to OPP-induced oxidative stress. Furthermore, nuclear colocalization of APE1 and the TF c-jun was observed in response to the treatment of CP and MCP for different time points in A549 cells. Therefore, in this study we demonstrate that MCP- and CP-induced oxidative stress alters APE1-dependent BER-pathway and also mediates cell survival signalling mechanisms via APE1 regulation, thereby promoting lung cancer cell survival and proliferation.
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17
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Paiva KBS, Granjeiro JM. Matrix Metalloproteinases in Bone Resorption, Remodeling, and Repair. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2017; 148:203-303. [PMID: 28662823 DOI: 10.1016/bs.pmbts.2017.05.001] [Citation(s) in RCA: 119] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Matrix metalloproteinases (MMPs) are the major protease family responsible for the cleavage of the matrisome (global composition of the extracellular matrix (ECM) proteome) and proteins unrelated to the ECM, generating bioactive molecules. These proteins drive ECM remodeling, in association with tissue-specific and cell-anchored inhibitors (TIMPs and RECK, respectively). In the bone, the ECM mediates cell adhesion, mechanotransduction, nucleation of mineralization, and the immobilization of growth factors to protect them from damage or degradation. Since the first description of an MMP in bone tissue, many other MMPs have been identified, as well as their inhibitors. Numerous functions have been assigned to these proteins, including osteoblast/osteocyte differentiation, bone formation, solubilization of the osteoid during bone resorption, osteoclast recruitment and migration, and as a coupling factor in bone remodeling under physiological conditions. In turn, a number of pathologies, associated with imbalanced bone remodeling, arise mainly from MMP overexpression and abnormalities of the ECM, leading to bone osteolysis or bone formation. In this review, we will discuss the functions of MMPs and their inhibitors in bone cells, during bone remodeling, pathological bone resorption (osteoporosis and bone metastasis), bone repair/regeneration, and emergent roles in bone bioengineering.
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Affiliation(s)
- Katiucia B S Paiva
- Laboratory of Extracellular Matrix Biology and Cellular Interaction (LabMec), Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil.
| | - José M Granjeiro
- National Institute of Metrology, Quality and Technology (InMetro), Bioengineering Laboratory, Duque de Caxias, RJ, Brazil; Fluminense Federal University, Dental School, Niterói, RJ, Brazil
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18
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Abstract
Emerging pathogenic viruses such as Ebola and Middle Eastern Respiratory Syndrome coronavirus (MERS-CoV) can cause acute infections through the evasion of the host's antiviral immune responses and by inducing the upregulation of inflammatory cytokines. This immune dysregulation, termed a cytokine storm or hypercytokinemia, is potentially fatal and is a significant underlying factor in increased mortality of infected patients. The prevalence of global outbreaks in recent years has offered opportunities to study the progression of various viral infections and have provided an improved understanding of hypercytokinemia associated with these diseases. However, despite this increased knowledge and the study of the infections caused by a range of emerging viruses, the therapeutic options still remain limited. This review aims to explore alternative experimental strategies for treating hypercytokinemia induced by the Ebola, avian influenza and Dengue viruses; outlining their modes of action, summarizing their preclinical assessments and potential clinical applications.
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Zhang Z, Zhang S, Wang S. DNAzymes Dz13 target the c-jun possess antiviral activity against influenza A viruses. Microb Pathog 2016; 103:155-161. [PMID: 28039102 DOI: 10.1016/j.micpath.2016.12.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 11/13/2016] [Accepted: 12/17/2016] [Indexed: 12/27/2022]
Abstract
The emergence of anti-influenza A virus drugs resistant strain highlights the need for more effective therapy. Our earlier study demonstrated that c-jun, a downstream molecule of JNK, might be important in viral infections and inflammatory responses. In the present study, we explored the function of DNAzymes Dz13 that target c-jun in influenza A virus infected mice. Dz13 displayed non-toxic side effects on A549 cells and BALB/c mice. Moreover, Dz13-treated mice had enhanced survival after influenza compared with untreated mice. Simultaneously, the pulmonary inflammatory responses and viral burden were decreased in Dz13 treated mice. Furthermore, proliferation levels of infection-induced CD4+ and CD8+ T cells were impaired. These data demonstrated that Dz13 could reduce viral replication and inflammatory response in vivo, suggesting that Dz13 may potentially be used to treat influenza A viral infection.
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Affiliation(s)
- Zhaopei Zhang
- Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Shouping Zhang
- Henan Institute of Science and Technology, Xinxiang 453003, China; Postdoctoral Research Base, Henan Institute of Science and Technology, Xinxiang 453003, China; Post-doctoral Research Station, Henan Agriculture University, Zhengzhou 450002, China
| | - Sanhu Wang
- Henan Institute of Science and Technology, Xinxiang 453003, China.
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20
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Yang X, Li Z, Zhang L, He J, Sun LQ. Selection and antitumor activity of anti-Bcl-2 DNAzymes. Biochem Biophys Res Commun 2016; 479:544-550. [PMID: 27666476 DOI: 10.1016/j.bbrc.2016.09.107] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Accepted: 09/21/2016] [Indexed: 11/19/2022]
Abstract
Apoptosis pathway has become one of the important targets for therapeutic exploration for cancer therapy. The increased Bcl-2 protein level and phosphorylation is implicated in a decreased chemotherapeutic response in many cancers. BCL-2 inhibitors have been developed as direct inducers of apoptosis. However, resistance to BCL2 inhibitors has been emerging and thus considerable effort has been made to seek novel approaches to BCL2 suppression. In this report we describe an in vitro DNAzyme selection strategy resulting in molecules that are effective in suppressing expression of the target gene BCL-2 in vitro. A 3'-inverted modification was shown to significantly increase the DNAzyme stability in serum and the modified DNAzyme delivered by an osmotic pump chemosensitized human prostate cancer to Taxol in vivo. Thus this study provides an alternative strategy for potential BCL-2-targetd therapy.
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Affiliation(s)
- Xinhui Yang
- Center for Molecular Medicine, Xiangya Hospital, Collaborative Innovation Center for Cancer Medicine, Central South University, Changsha, 410078, China
| | - Zhi Li
- Center for Molecular Medicine, Xiangya Hospital, Collaborative Innovation Center for Cancer Medicine, Central South University, Changsha, 410078, China; Key Laboratory of Molecular Radiation Oncology, Hunan Province, China
| | - Lu Zhang
- Center for Molecular Medicine, Xiangya Hospital, Collaborative Innovation Center for Cancer Medicine, Central South University, Changsha, 410078, China; Key Laboratory of Molecular Radiation Oncology, Hunan Province, China
| | - Jiang He
- Center for Molecular Medicine, Xiangya Hospital, Collaborative Innovation Center for Cancer Medicine, Central South University, Changsha, 410078, China; Key Laboratory of Molecular Radiation Oncology, Hunan Province, China
| | - Lun-Quan Sun
- Center for Molecular Medicine, Xiangya Hospital, Collaborative Innovation Center for Cancer Medicine, Central South University, Changsha, 410078, China; Key Laboratory of Molecular Radiation Oncology, Hunan Province, China.
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21
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Retta SF, Glading AJ. Oxidative stress and inflammation in cerebral cavernous malformation disease pathogenesis: Two sides of the same coin. Int J Biochem Cell Biol 2016; 81:254-270. [PMID: 27639680 PMCID: PMC5155701 DOI: 10.1016/j.biocel.2016.09.011] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 09/08/2016] [Accepted: 09/13/2016] [Indexed: 12/14/2022]
Abstract
CCM proteins play pleiotropic roles in various redox-sensitive signaling pathways. CCM proteins modulate the crosstalk between redox signaling and autophagy that govern cell homeostasis and stress responses. Oxidative stress and inflammation are emerging as key focal determinants of CCM lesion formation, progression and severity. The pleiotropic functions of CCM proteins may prevent vascular dysfunctions triggered by local oxidative stress and inflammatory events. The distinct therapeutic compounds proposed so far for CCM disease share the ability to modulate redox signaling and autophagy.
Cerebral Cavernous Malformation (CCM) is a vascular disease of proven genetic origin, which may arise sporadically or is inherited as an autosomal dominant condition with incomplete penetrance and highly variable expressivity. CCM lesions exhibit a range of different phenotypes, including wide inter-individual differences in lesion number, size, and susceptibility to intracerebral hemorrhage (ICH). Lesions may remain asymptomatic or result in pathological conditions of various type and severity at any age, with symptoms ranging from recurrent headaches to severe neurological deficits, seizures, and stroke. To date there are no direct therapeutic approaches for CCM disease besides the surgical removal of accessible lesions. Novel pharmacological strategies are particularly needed to limit disease progression and severity and prevent de novo formation of CCM lesions in susceptible individuals. Useful insights into innovative approaches for CCM disease prevention and treatment are emerging from a growing understanding of the biological functions of the three known CCM proteins, CCM1/KRIT1, CCM2 and CCM3/PDCD10. In particular, accumulating evidence indicates that these proteins play major roles in distinct signaling pathways, including those involved in cellular responses to oxidative stress, inflammation and angiogenesis, pointing to pathophysiological mechanisms whereby the function of CCM proteins may be relevant in preventing vascular dysfunctions triggered by these events. Indeed, emerging findings demonstrate that the pleiotropic roles of CCM proteins reflect their critical capacity to modulate the fine-tuned crosstalk between redox signaling and autophagy that govern cell homeostasis and stress responses, providing a novel mechanistic scenario that reconciles both the multiple signaling pathways linked to CCM proteins and the distinct therapeutic approaches proposed so far. In addition, recent studies in CCM patient cohorts suggest that genetic susceptibility factors related to differences in vascular sensitivity to oxidative stress and inflammation contribute to inter-individual differences in CCM disease susceptibility and severity. This review discusses recent progress into the understanding of the molecular basis and mechanisms of CCM disease pathogenesis, with specific emphasis on the potential contribution of altered cell responses to oxidative stress and inflammatory events occurring locally in the microvascular environment, and consequent implications for the development of novel, safe, and effective preventive and therapeutic strategies.
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Affiliation(s)
- Saverio Francesco Retta
- Department of Clinical and Biological Sciences, School of Medicine and Surgery, University of Torino, Regione Gonzole 10, 10043 Orbassano, Torino, Italy; CCM Italia Research Network(1).
| | - Angela J Glading
- University of Rochester Medical Center, School of Medicine and Dentistry, 601 Elmwood Ave, 14642 Rochester, NY, USA.
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22
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Zhang L, Zhao W, Liang C, Yi X, Pei Y, Lin Y, He J, Li W. VEGFR-1 targeted DNAzyme via transcatheter arterial delivery influences tumor vasculature assessed through dynamic contrast-enhanced magnetic resonance imaging. Oncol Rep 2016; 36:1339-44. [PMID: 27431919 DOI: 10.3892/or.2016.4933] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Accepted: 03/09/2016] [Indexed: 11/06/2022] Open
Abstract
DNAzymes are synthetic single-stranded DNA oligonucleotides that bind and cleave target mRNA in a sequence-specific manner. Although the therapeutic potential has been demonstrated in both preclinical and clinical settings, the efficient delivery and in vivo assessment of the DNAzyme efficacy remain the vital unsolved issue. In the present study, we examined the feasibility of using transcatheter arterial chemoembolization (TACE) strategy to deliver a DNAzyme targeting VEGFR-1 and monitoring its effect on tumor angiogenesis in vivo via dynamic contrast enhanced magnetic resonance imaging (DCE-MRI). In a rabbit liver cancer model (VX2), we showed that the DNAzyme was efficiently delivered into the tumor by TACE. DCE-MRI revealed that the VEGFR-1-targeted DNAzyme affected the tumor vasculature through inhibiting VEGFR-1 expression in vivo, which was reflected by a reduction of Ktrans and Kep, the parameters of tumor microvascular permeability. Our findings offer an efficient strategy of delivery and assessment of the VEGFR-1 DNAzyme, and further demonstrate the feasibility of DNAzyme for cancer therapy.
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Affiliation(s)
- Liqing Zhang
- Department of Radiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Wei Zhao
- Department of Radiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Chen Liang
- Department of Interventional Radiology, Hospital of Finance and Commerce, Changsha, Hunan 410008, P.R. China
| | - Xiaoping Yi
- Department of Radiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Yigang Pei
- Department of Radiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Yiting Lin
- Center for Molecular Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Jiang He
- Center for Molecular Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Wenzheng Li
- Department of Radiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
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23
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Li Y, McRobb LS, Khachigian LM. Inhibition of intimal thickening after vascular injury with a cocktail of vascular endothelial growth factor and cyclic Arg-Gly-Asp peptide. Int J Cardiol 2016; 220:185-91. [PMID: 27379921 DOI: 10.1016/j.ijcard.2016.06.300] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Revised: 06/10/2016] [Accepted: 06/28/2016] [Indexed: 11/28/2022]
Abstract
BACKGROUND Percutaneous coronary intervention is widely used for the treatment of coronary artery disease; however, significant challenges such as restenosis remain. Key to solving these problems is to inhibit smooth muscle cell activation while enhancing re-endothelialization. Early growth response-1 (Egr-1) is a transcription factor that regulates vascular smooth muscle cell (SMC) proliferation and migration through its control of an array of downstream genes. METHODS A "cocktail" of vascular endothelial growth factor (VEGF)-A, VEGF-D and cyclic RGD was tested for its ability to inhibit neointima formation and accelerate re-endothelialization following balloon injury to carotid arteries of rats. RESULTS In vitro, the cocktail stimulated endothelial cell growth yet inhibited smooth muscle cell growth. In vivo, cocktail-treated injured arteries exhibited reduced intimal thickening by >50% (P<0.05). It increased both re-endothelialization and endothelial nitric oxide synthase (NOS) expression. Cocktail reduced Egr-1 expression, an effect blocked by the NOS inhibitor L-N(G)-nitroarginine methyl ester (L-NAME) that also prevented cocktail inhibition of neointima inhibition. CONCLUSIONS This combination may potentially be useful for the treatment of restenosis with concomitant stimulation of revascularization.
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Affiliation(s)
- Yue Li
- School of Medical Sciences, University of New South Wales, Sydney, NSW 2052, Australia
| | - Lucinda S McRobb
- School of Medical Sciences, University of New South Wales, Sydney, NSW 2052, Australia; Clinical Medicine, Faculty of Medicine and Health Sciences, Macquarie University, Sydney, NSW 2109, Australia
| | - Levon M Khachigian
- School of Medical Sciences, University of New South Wales, Sydney, NSW 2052, Australia.
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24
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Liu Y, Long Y, Xing Z, Zhang D. C-Jun recruits the NSL complex to regulate its target gene expression by modulating H4K16 acetylation and promoting the release of the repressive NuRD complex. Oncotarget 2016; 6:14497-506. [PMID: 25971333 PMCID: PMC4546482 DOI: 10.18632/oncotarget.3988] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Accepted: 04/15/2015] [Indexed: 11/25/2022] Open
Abstract
The proto-oncogene c-Jun plays essential roles in various cellular processes, including cell proliferation, cell differentiation, and cellular apoptosis. Enormous efforts have been made to understand the mechanisms regulating c-Jun activation. The males absent on the first (MOF)-containing non-specific lethal (NSL) complex has been shown to positively regulate gene expression. However, the biological function of the NSL complex is largely unknown. Here we present evidence showing that c-Jun recruits the NSL complex to c-Jun target genes upon activation. The NSL complex catalyzes H4K16 acetylation at c-Jun target genes, thereby promoting c-Jun target gene transcription. More interestingly, we also found that the NSL complex promotes the release of the repressive NuRD complex from c-Jun target genes, thus activating c-Jun. Our findings not only reveal a new mechanism regulating c-Jun activation, but also identify the NSL complex as a c-Jun co-activator in c-Jun-regulated gene expression, expanding our knowledge of the function of the NSL complex in gene expression regulation.
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Affiliation(s)
- Yan Liu
- College of Life Sciences, Hebei United University, Tangshan, China
| | - Yuehong Long
- College of Life Sciences, Hebei United University, Tangshan, China
| | - Zhaobin Xing
- College of Life Sciences, Hebei United University, Tangshan, China
| | - Daoyong Zhang
- Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, PA, USA
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Gong L, Zhao Z, Lv YF, Huan SY, Fu T, Zhang XB, Shen GL, Yu RQ. DNAzyme-based biosensors and nanodevices. Chem Commun (Camb) 2015; 51:979-95. [PMID: 25336076 DOI: 10.1039/c4cc06855f] [Citation(s) in RCA: 205] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
DNAzymes, screened through in vitro selection, have shown great promise as molecular tools in the design of biosensors and nanodevices. The catalytic activities of DNAzymes depend specifically on cofactors and show multiple enzymatic turnover properties, which make DNAzymes both versatile recognition elements and outstanding signal amplifiers. Combining nanomaterials with unique optical, magnetic and electronic properties, DNAzymes may yield novel fluorescent, colorimetric, surface-enhanced Raman scattering (SERS), electrochemical and chemiluminescent biosensors. Moreover, some DNAzymes have been utilized as functional components to perform arithmetic operations or as "walkers" to move along DNA tracks. DNAzymes can also function as promising therapeutics, when designed to complement target mRNAs or viral RNAs, and consequently lead to down-regulation of protein expression. This feature article focuses on the most significant achievements in using DNAzymes as recognition elements and signal amplifiers for biosensors, and highlights the applications of DNAzymes in logic gates, DNA walkers and nanotherapeutics.
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Affiliation(s)
- Liang Gong
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
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Abstract
Gene-silencing strategies based on catalytic nucleic acids have been rapidly developed in the past decades. Ribozymes, antisense oligonucleotides and RNA interference have been actively pursued for years due to their potential application in gene inactivation. Pioneered by Joyce et al., a new class of catalytic nucleic acid composed of deoxyribonucleotides has emerged via an in vitro selection system. The therapeutic potential of these RNA-cleaving DNAzymes have been shown both in vitro and in vivo. Although they rival the activity and stability of synthetic ribozymes, they are limited by inefficient delivery to the intracellular targets. Recent successes in clinical testing of the DNAzymes in cancer patients have revitalized the potential clinical utility of DNAzymes.
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Yu X, Yang L, Cairns MJ, Dass C, Saravolac E, Li X, Sun LQ. Chemosensitization of solid tumors by inhibition of Bcl-xL expression using DNAzyme. Oncotarget 2015; 5:9039-48. [PMID: 25344863 PMCID: PMC4253417 DOI: 10.18632/oncotarget.1996] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
DNAzymes are a novel class of gene suppressors that selectively bind to an RNA substrate by Watson-Crick base pairing and cleave phosphodiester bonds. To explore the potential for therapeutic use of catalytic DNA molecules, active DNAzymes targeting the bcl-xL gene were generated through a multiplex in vitro selection. The DNAzyme-mediated down-regulation of the bcl-xL expression was demonstrated in various cancer cell lines by Western blots. Treatment of the cells with the active DNAzyme led to increases in percentage of apoptotic cells and cytochrome c release from mitochondria, a hall marker of apoptosis. When combined with chemotherapeutics such as Taxol, the DNAzyme significantly sensitised a panel of cancer cells to apoptosis as measured by cell survival assay. In Taxol-resistant cells, down-regulation of bcl-xL expression by the DNAzyme reversed the chemo-resistant phenotype of the cancer cells. In a xenograft mouse model, the DNAzyme was delivered into the tumors via an ALZET osmotic pump and shown to chemosensitize PC3 tumor when treating with Taxol. The results from the present study demonstrate that bcl-xL DNAzyme treatment facilitates apoptosis in solid tumors and suggest the potential use of bcl-xL DNAzyme in combination with chemotherapeutics for cancer therapy.
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Affiliation(s)
- Xiaohui Yu
- Center for Molecular Medicine, Xiangya Hospital, Central South University, Changsha, China
| | - Lifang Yang
- Center for Molecular Medicine, Xiangya Hospital, Central South University, Changsha, China. Cancer Research Institute, Central South University, Changsha, China
| | - Murray J Cairns
- Schizophrenia Research Institute, Sydney, NSW, Australia and School of Biomedical Sciences, Faculty of Health and Medicine, University of Newcastle, NSW, Australia
| | - Crispin Dass
- Health Science, School of Pharmacy, Curtin University, WA, Australia
| | | | - Xiong Li
- Center for Molecular Medicine, Xiangya Hospital, Central South University, Changsha, China
| | - Lun-Quan Sun
- Center for Molecular Medicine, Xiangya Hospital, Central South University, Changsha, China
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Chiu CT, Chen JH, Chou FP, Lin HH. Hibiscus sabdariffa Leaf Extract Inhibits Human Prostate Cancer Cell Invasion via Down-Regulation of Akt/NF-kB/MMP-9 Pathway. Nutrients 2015; 7:5065-87. [PMID: 26115086 PMCID: PMC4516987 DOI: 10.3390/nu7075065] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Revised: 06/10/2015] [Accepted: 06/16/2015] [Indexed: 12/30/2022] Open
Abstract
Hibiscus sabdariffa leaf has been previously shown to possess hypoglycemic, hypolipidemic, and antioxidant effects, and induce tumor cell apoptosis. However, the molecular mechanisms involved in the anticancer activity of H. sabdariffa leaf extract (HLE) are poorly understood. The object of the study was to examine the anti-invasive potential of HLE. First, HLE was demonstrated to be rich in polyphenols. The results of wound-healing assay and in vitro transwell assay revealed that HLE dose-dependently inhibited the migration and invasion of human prostate cancer LNCaP (lymph node carcinoma of the prostate) cells under non-cytotoxic concentrations. Our results further showed that HLE exerted an inhibitory effect on the activity and expressions of matrix metalloproteinase-9 (MMP-9). The HLE-inhibited MMP-9 expression appeared to be a consequence of nuclear factor-kappaB (NF-κB) inactivation because its DNA-binding activity was suppressed by HLE. Molecular data showed all these influences of HLE might be mediated via inhibition of protein kinase B (PKB, also known as Akt)/NF-κB/MMP-9 cascade pathway, as demonstrated by the transfection of Akt1 overexpression vector. Finally, the inhibitory effect of HLE was proven by its inhibition on the growth of LNCaP cells and the expressions of metastasis-related molecular proteins in vivo. These findings suggested that the inhibition of MMP-9 expression by HLE may act through the suppression of the Akt/NF-κB signaling pathway, which in turn led to the reduced invasiveness of the cancer cells.
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Affiliation(s)
- Chun-Tang Chiu
- Institute of Biochemistry and Biotechnology, Chung Shan Medical University, No. 110, Sec. 1, Jianguo N. Road, Taichung City 40201, Taiwan.
| | - Jing-Hsien Chen
- School of Nutrition, Chung Shan Medical University, No. 110, Sec. 1, Jianguo N. Road, Taichung City 40201, Taiwan.
| | - Fen-Pi Chou
- Institute of Biochemistry and Biotechnology, Chung Shan Medical University, No. 110, Sec. 1, Jianguo N. Road, Taichung City 40201, Taiwan.
| | - Hui-Hsuan Lin
- School of Medical Laboratory and Biotechnology, Chung Shan Medical University, No. 110, Sec. 1, Jianguo N. Road, Taichung City 40201, Taiwan.
- Department of Clinical Laboratory, Chung Shan Medical University Hospital, No. 110, Sec. 1, Jianguo N. Road, Taichung City 40201, Taiwan.
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Wang X, Zhang L, Ding N, Yang X, Zhang J, He J, Li Z, Sun LQ. Identification and characterization of DNAzymes targeting DNA methyltransferase I for suppressing bladder cancer proliferation. Biochem Biophys Res Commun 2015; 461:329-33. [DOI: 10.1016/j.bbrc.2015.04.033] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Accepted: 04/07/2015] [Indexed: 10/23/2022]
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Fokina AA, Stetsenko DA, François JC. DNA enzymes as potential therapeutics: towards clinical application of 10-23 DNAzymes. Expert Opin Biol Ther 2015; 15:689-711. [PMID: 25772532 DOI: 10.1517/14712598.2015.1025048] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
INTRODUCTION Ongoing studies on the inhibition of gene expression at the mRNA level have identified several types of specific inhibitors such as antisense oligonucleotides, small interfering RNA, ribozymes and DNAzymes (Dz). After its discovery in 1997, the 10-23 Dz (which can cleave RNA efficiently and site-specifically, has flexible design, is independent from cell mechanisms, does not require expensive chemical modifications for effective use in vivo) has been employed to downregulate a range of therapeutically important genes. Recently, 10-23 Dzs have taken their first steps into clinical trials. AREAS COVERED This review focuses predominantly on Dz applications as potential antiviral, antibacterial, anti-cancer and anti-inflammatory agents as well as for the treatment of cardiovascular disease and diseases of CNS, summarizing results of their clinical trials up to the present day. EXPERT OPINION In comparison with antisense oligonucleotides and small interfering RNAs, Dzs do not usually show off-target effects due to their high specificity and lack of immunogenicity in vivo. As more results of clinical trials carried out so far are gradually becoming available, Dzs may turn out to be safe and well-tolerated therapeutics in humans. Therefore, there is a good chance that we may witness a deoxyribozyme drug reaching the clinic in the near future.
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Affiliation(s)
- Alesya A Fokina
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences , 8 Lavrentiev Avenue, Novosibirsk 630090 , Russia
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31
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Development of a protective dermal drug delivery system for therapeutic DNAzymes. Int J Pharm 2015; 479:150-8. [DOI: 10.1016/j.ijpharm.2014.12.043] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Revised: 12/16/2014] [Accepted: 12/19/2014] [Indexed: 11/18/2022]
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32
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Regulatory roles of c-jun in H5N1 influenza virus replication and host inflammation. Biochim Biophys Acta Mol Basis Dis 2014; 1842:2479-88. [DOI: 10.1016/j.bbadis.2014.04.017] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Revised: 04/16/2014] [Accepted: 04/18/2014] [Indexed: 11/22/2022]
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Friedhuber AM, Chandolu V, Manchun S, Donkor O, Sriamornsak P, Dass CR. Nucleotropic doxorubicin nanoparticles decrease cancer cell viability, destroy mitochondria, induce autophagy and enhance tumour necrosis. J Pharm Pharmacol 2014; 67:68-77. [DOI: 10.1111/jphp.12322] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Accepted: 08/10/2014] [Indexed: 12/16/2022]
Abstract
Abstract
Objective
Doxorubicin (Dox) is used clinically against various neoplasias, but suffers from serious side effects, and for the past three decades, this shortcoming has spurred research towards finding better drug delivery systems (DDSs) for this frontline drug.
Methods
A non-targeted nucleotropic Dox-loaded nanoparticle (DNP) DDS is described, which has a simple chemical design, is easy to formulate and administer, is inexpensive, non-biohazardous and may prove to be useful clinically.
Key findings
The DNP formulated via vortex-assisted complex coarcevation enhanced (300-fold) cell-inhibitory activity of the drug in a panel of human cancer cells (osteosarcoma, breast, prostate and colorectal cancer) and enhanced (10-fold) efficacy against osteosarcoma (OS) in vivo. The slow-release DNPs localised to the endoplasmic reticulum disrupted the mitochondria and entered the nucleus. Prominent cytosolic vacuolisation, budding off of portions of the cytoplasm, both suggestive of autophagy, were observed. Mice that were administered with DNPs intratumorally had the smallest tumours at the end of the study, with more necrotic hotspots.
Conclusion
This promising nucleotropic DDS enhances the cell delivery and activity of Dox against a variety of human cancer cell lines and in OS tumours in mice.
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Affiliation(s)
- Anna M Friedhuber
- Department of Pathology, University of Melbourne, Melbourne, Australia
| | - Vijay Chandolu
- Cancer Research Lab, Victoria University, Melbourne, Australia
| | - Somkamon Manchun
- Department of Pharmaceutical Technology, Silpakorn University, Nakhon Pathom, Thailand
| | - Osaana Donkor
- College of Health and Biomedicine, Victoria University, Melbourne, Australia
| | - Pornsak Sriamornsak
- Department of Pharmaceutical Technology, Silpakorn University, Nakhon Pathom, Thailand
- Pharmaceutical Biopolymer Group (PBiG), Silpakorn University, Nakhon Pathom, Thailand
| | - Crispin R Dass
- School of Pharmacy, Curtin University, Perth, Australia
- Biosciences Research Precinct, Curtin University, Perth, Australia
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Wang W, Bian K, Vallabhaneni S, Zhang B, Wu RC, O'Malley BW, Long W. ERK3 promotes endothelial cell functions by upregulating SRC-3/SP1-mediated VEGFR2 expression. J Cell Physiol 2014; 229:1529-37. [PMID: 24585635 DOI: 10.1002/jcp.24596] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Accepted: 02/24/2014] [Indexed: 01/08/2023]
Abstract
Despite a regain of interest recently in ERK3 kinase signaling, the molecular regulations of both ERK3 gene expression and protein kinase activity are still largely unknown. While it is shown that disruption of ERK3 gene causes neonatal lethality, cell type-specific functions of ERK3 signaling remain to be explored. In this study, we report that ERK3 gene expression is upregulated by cytokines through c-Jun in endothelial cells; c-Jun binds to the ERK3 gene and regulates its transcription. We further reveal a new role for ERK3 in regulating endothelial cell migration, proliferation and tube formation by upregulating SRC-3/SP-1-mediated VEGFR2 expression. The underlying molecular mechanism involves ERK3-stimulated formation of a transcriptional complex involving coactivator SRC-3, transcription factor SP-1 and the secondary coactivator CBP. Taken together, our study identified a molecular regulatory mechanism of ERK3 gene expression and revealed a previously unknown role of ERK3 in regulating endothelial cell functions.
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Affiliation(s)
- Wei Wang
- Department of Molecular and Cellular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, Texas
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Therapeutic potential of siRNA and DNAzymes in cancer. Tumour Biol 2014; 35:9505-21. [PMID: 25149153 DOI: 10.1007/s13277-014-2477-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Accepted: 08/07/2014] [Indexed: 02/07/2023] Open
Abstract
Cancer is characterized by uncontrolled cell growth, invasion, and metastasis and possess threat to humans worldwide. The scientific community is facing numerous challenges despite several efforts to cure cancer. Though a number of studies were done earlier, the molecular mechanism of cancer progression is not completely understood. Currently available treatments like surgery resection, adjuvant chemotherapy, and radiotherapy are not completely effective in curing all the cancers. Recent advances in the antisense technology provide a powerful tool to investigate various cancer pathways and target them. Small interfering RNAs (siRNAs) could be effective in downregulating the cancer-associated genes, but their in vivo delivery is the main obstacle. DNA enzymes (DNAzymes) have great potential in the treatment of cancer due to high selectivity and significant catalytic efficiency. In this review, we are focusing on antisense molecules such as siRNA and DNAzymes in cancer therapeutics development. This review also describes the challenges and approaches to overcome obstacles involved in using siRNA and DNAzymes in the treatment of cancers.
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Pastushenko I, Vermeulen PB, Van den Eynden GG, Rutten A, Carapeto FJ, Dirix LY, Van Laere S. Mechanisms of tumour vascularization in cutaneous malignant melanoma: clinical implications. Br J Dermatol 2014; 171:220-33. [PMID: 24641095 DOI: 10.1111/bjd.12973] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/11/2014] [Indexed: 01/02/2023]
Abstract
Malignant melanoma represents < 10% of all skin cancers but is responsible for the majority of skin-cancer-related deaths. Metastatic melanoma has historically been considered as one of the most therapeutically challenging malignancies. Fortunately, for the first time after decades of basic research and clinical investigation, new drugs have produced major clinical responses. Angiogenesis has been considered an important target for cancer treatment. Initial efforts have focused primarily on targeting endothelial and tumour-related vascular endothelial growth factor signalling. Here, we review different mechanisms of tumour vascularization described in melanoma and discuss the potential clinical implications.
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Affiliation(s)
- I Pastushenko
- Department of Dermatology, Hospital Clínico Universitario 'Lozano Blesa', Zaragoza, 50009, Spain
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Zhang E, Feng X, Liu F, Zhang P, Liang J, Tang X. Roles of PI3K/Akt and c-Jun signaling pathways in human papillomavirus type 16 oncoprotein-induced HIF-1α, VEGF, and IL-8 expression and in vitro angiogenesis in non-small cell lung cancer cells. PLoS One 2014; 9:e103440. [PMID: 25058399 PMCID: PMC4110025 DOI: 10.1371/journal.pone.0103440] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Accepted: 07/02/2014] [Indexed: 11/22/2022] Open
Abstract
Background and Objectives Human papillomavirus (HPV)-16 infection may be related to non-smoking associated lung cancer. Our previous studies have found that HPV-16 oncoproteins promoted angiogenesis via enhancing hypoxia-inducible factor-1α (HIF-1α), vascular endothelial growth factor (VEGF), and interleukin-8 (IL-8) expression in non-small cell lung cancer (NSCLC) cells. In this study, we further investigated the roles of PI3K/Akt and c-Jun signaling pathways in it. Methods Human NSCLC cell lines, A549 and NCI-H460, were stably transfected with pEGFP-16 E6 or E7 plasmids. Western blotting was performed to analyze the expression of HIF-1α, p-Akt, p-P70S6K, p-P85S6K, p-mTOR, p-JNK, and p-c-Jun proteins. VEGF and IL-8 protein secretion and mRNA levels were determined by ELISA and Real-time PCR, respectively. The invitro angiogenesis was observed by human umbilical vein endothelial cells (HUVECs) tube formation assay. Co-immunoprecipitation was performed to analyze the interaction between c-Jun and HIF-1α. Results HPV-16 E6 and E7 oncoproteins promoted the activation of Akt, P70S6K, P85S6K, mTOR, JNK, and c-Jun. LY294002, a PI3K inhibitor, inhibited HPV-16 oncoprotein-induced activation of Akt, P70S6K, and P85S6K, expression of HIF-1α, VEGF, and IL-8, and invitro angiogenesis. c-Jun knockdown by specific siRNA abolished HPV-16 oncoprotein-induced HIF-1α, VEGF, and IL-8 expression and invitro angiogenesis. Additionally, HPV-16 oncoproteins promoted HIF-1α protein stability via blocking proteasome degradation pathway, but c-Jun knockdown abrogated this effect. Furthermore, HPV-16 oncoproteins increased the quantity of c-Jun binding to HIF-1α. Conclusions PI3K/Akt signaling pathway and c-Jun are involved in HPV-16 oncoprotein-induced HIF-1α, VEGF, and IL-8 expression and invitro angiogenesis. Moreover, HPV-16 oncoproteins promoted HIF-1α protein stability possibly through enhancing the interaction between c-Jun and HIF-1α, thus making a contribution to angiogenesis in NSCLC cells.
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MESH Headings
- Carcinoma, Non-Small-Cell Lung/blood supply
- Carcinoma, Non-Small-Cell Lung/metabolism
- Carcinoma, Non-Small-Cell Lung/virology
- Cell Line, Tumor
- Chromones/pharmacology
- Genes, jun/drug effects
- Humans
- Hypoxia-Inducible Factor 1, alpha Subunit
- In Vitro Techniques
- Interleukin-8/metabolism
- Lung Neoplasms/blood supply
- Lung Neoplasms/metabolism
- Lung Neoplasms/virology
- MAP Kinase Signaling System/drug effects
- Morpholines/pharmacology
- Neovascularization, Pathologic/metabolism
- Neovascularization, Pathologic/virology
- Oncogene Proteins, Viral/genetics
- Oncogene Proteins, Viral/metabolism
- Papillomavirus E7 Proteins/genetics
- Papillomavirus E7 Proteins/metabolism
- Repressor Proteins/genetics
- Repressor Proteins/metabolism
- Vascular Endothelial Growth Factor A
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Affiliation(s)
- Erying Zhang
- Institute of Biochemistry and Molecular Biology, Guangdong Medical College, Zhanjiang, Guangdong, China
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical College, Zhanjiang, Guangdong, China
| | - Xiaowei Feng
- Institute of Biochemistry and Molecular Biology, Guangdong Medical College, Zhanjiang, Guangdong, China
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical College, Zhanjiang, Guangdong, China
| | - Fei Liu
- Institute of Biochemistry and Molecular Biology, Guangdong Medical College, Zhanjiang, Guangdong, China
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical College, Zhanjiang, Guangdong, China
| | - Peihua Zhang
- Institute of Plastic Surgery, Affiliated Hospital of Guangdong Medical College, Zhanjiang, Guangdong, China
| | - Jie Liang
- Institute of Plastic Surgery, Affiliated Hospital of Guangdong Medical College, Zhanjiang, Guangdong, China
| | - Xudong Tang
- Institute of Biochemistry and Molecular Biology, Guangdong Medical College, Zhanjiang, Guangdong, China
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical College, Zhanjiang, Guangdong, China
- * E-mail:
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Jiang H, Wortsman J, Matsuoka L, Granese J, Carlson JA, Mihm M, Slominski A. Molecular spectrum of pigmented skin lesions: from nevus to melanoma. ACTA ACUST UNITED AC 2014. [DOI: 10.1586/17469872.1.5.679] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Jun proteins and AP-1 in tumorigenesis. Mol Oncol 2013. [DOI: 10.1017/cbo9781139046947.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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You X, Yang YC, Ke X, Hong SL, Hu GH. Fluorescence visualization screening for EBV-LMP1-targeted DNAzymes. Otolaryngol Head Neck Surg 2013; 150:251-8. [PMID: 24323909 DOI: 10.1177/0194599813514514] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVES To develop a novel screening method for DNAzymes targeting the LMP1 carboxy region. STUDY DESIGN To design a method to screen special DNAzymes toward the Epstein-Barr virus (EBV)-associated carcinoma before clinic use. SETTING Key Laboratory of the Ministry of Education-Molecular Biology of Infectious Diseases in Chongqing Medical University. SUBJECTS AND METHODS Four novel 10-23 DNAzymes (DZ509, DZ1037, DZ893, and DZ827) targeting the EBV-LMP1 gene were designed and evaluated by detecting enhanced green fluorescence protein (EGFP) expression of LMP1 mRNA and the protein in the nasopharyngeal carcinoma (NPC) cell line CNE2 transfected with the pEGFP-C1-LMP1c vector. The screened specific DNAzymes were then transfected into NPC cell lines C666-1 while a mutant oligonucleotide mutDZ509 and an antisense oligonucleotide ASODN509 were designed as positive and negative controls. Cell proliferation, cell apoptosis, LMP1 mRNA, and the protein were assessed using 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) assay, Annexin V-fluorescence isothiocyanate (FITC), reverse transcription polymerase chain reaction (RT-PCR), and Western blots. RESULTS The inhibition rates of fluorescence expression of the DNAzymes DZ509, DZ1037, DZ893, and DZ827 were 91.25%, 65.84%, 49.02%, and 44.56%, respectively. The results were in accordance with the inhibition effects of mRNA and protein expression. The screened DZ509 could effectively knock down endogenous LMP1 expression in C666-1 cells, inhibit cell proliferation, and induce cell apoptosis compared with mutDZ509 and ASODN509. CONCLUSION LMP1 could present a potential target for DNAzymes toward the EBV-associated carcinoma, and the EGFP expression vector could be a visible method for screening special DNAzymes before clinic use.
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Affiliation(s)
- Xi You
- Department of Otolaryngology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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Romanchikova N, Trapencieris P, Zemītis J, Turks M. A novel matrix metalloproteinase-2 inhibitor triazolylmethyl aziridine reduces melanoma cell invasion, angiogenesis and targets ERK1/2 phosphorylation. J Enzyme Inhib Med Chem 2013; 29:765-72. [DOI: 10.3109/14756366.2013.855207] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
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42
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Cao Y, Yang L, Jiang W, Wang X, Liao W, Tan G, Liao Y, Qiu Y, Feng D, Tang F, Hou BL, Zhang L, Fu J, He F, Liu X, Jiang W, Yang T, Sun LQ. Therapeutic evaluation of Epstein-Barr virus-encoded latent membrane protein-1 targeted DNAzyme for treating of nasopharyngeal carcinomas. Mol Ther 2013; 22:371-377. [PMID: 24322331 PMCID: PMC3916047 DOI: 10.1038/mt.2013.257] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Accepted: 10/15/2013] [Indexed: 11/24/2022] Open
Abstract
The ability of the 10–23 DNAzyme to specifically cleave RNA with high efficiency has fuelled expectation that this agent may have useful applications for targeted therapy. Here, we, for the first time, investigated the antitumor and radiosensitizing effects of a DNAzyme (DZ1) targeted to the Epstein-Barr virus (EBV)-LMP1 mRNA of nasopharyngeal carcinoma (NPC) in patients. Preclinical studies indicated that the DNAzyme was safe and well tolerated. A randomized and double-blind clinical study was conducted in 40 NPC patients who received DZ1 or saline intratumorally, in conjunction with radiation therapy. Tumor regression, patient survival, EBV DNA copy number and tumor microvascular permeability were assessed in a 3-month follow-up. The mean tumor regression rate at week 12 was significantly higher in DZ1 treated group than in the saline control group. Molecular imaging analysis showed that DZ1 impacted on tumor microvascular permeability as evidenced by a faster decline of the Ktrans in DZ1-treated patients. The percentage of the samples with undetectable level of EBV DNA copy in the DZ1 group was significantly higher than that in the control group. No adverse events that could be attributed to the DZ1 injection were observed in patients.
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Affiliation(s)
- Ya Cao
- Cancer Research Institute and Key laboratory of Ministry of Education, Central South University, Changsha, China.
| | - Lifang Yang
- Cancer Research Institute and Key laboratory of Ministry of Education, Central South University, Changsha, China
| | - Wuzhong Jiang
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China
| | - Xiaoyi Wang
- Department of Radiology, Xiangya Hospital, Central South University, Changsha, China
| | - Weihua Liao
- Department of Radiology, Xiangya Hospital, Central South University, Changsha, China
| | - Guolin Tan
- Department of ENT, Xiangya Third Hospital, Central South University, Changsha, China
| | - Yuping Liao
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China
| | - Yuanzheng Qiu
- Department of ENT, Xiangya Hospital, Central South University, Changsha, China
| | - Deyun Feng
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
| | - Faqing Tang
- Department of Clinical Chemistry, Xiangya Hospital, Central South University, Changsha, China
| | - Bob L Hou
- Department of Radiology, West Virginia University, Morgantown, West Virginia, USA
| | - Ling Zhang
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China
| | - Jia Fu
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China
| | - Fengjiao He
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China
| | - Xiaoyu Liu
- Department of Radiology, Xiangya Hospital, Central South University, Changsha, China
| | - Wenjuan Jiang
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China
| | - Tubao Yang
- School of Public Health, Central South University, Changsha, China
| | - Lun-Quan Sun
- Center for Molecular Medicine, Xiangya Hospital, Central South University, Changsha, China.
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AP-1/c-Jun transcription factors: regulation and function in malignant melanoma. Eur J Cell Biol 2013; 93:76-81. [PMID: 24315690 DOI: 10.1016/j.ejcb.2013.10.003] [Citation(s) in RCA: 114] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2013] [Revised: 10/01/2013] [Accepted: 10/21/2013] [Indexed: 11/23/2022] Open
Abstract
Malignant melanoma is an aggressive form of skin cancer with an increasing incidence worldwide. One way to address the pathology of the disease is through molecular research. In addition to the analysis of melanoma-relevant signaling pathways, the investigation of important transcription factors is a fundamental objective. The AP-1 transcription factor family is known to play an important role in melanoma progression and development. The AP-1 family member c-Jun is highly expressed and active in melanoma cells, and the mechanisms and signaling pathways regulating c-Jun protein are diverse. In addition to the common regulation and activation of c-Jun by mitogen-activated protein kinases (MAPKs), there are several other signaling pathways and interactions leading to c-Jun protein expression and thus AP-1 activation. In malignant melanoma, and many other cancer types, c-Jun has mainly oncogenic functions; however, other AP-1 proteins also have anti-oncogenic roles. Interestingly, several studies have revealed that a strong AP-1 activity in melanoma mainly depends on c-Jun. Recently, it has also been shown that the c-Jun protein is regulated and activated by several other mechanisms, including miRNAs and the cytoskeleton. In summary, there are a variety of mechanisms underlying the induction of c-Jun protein expression and activity leading to tumor progression and development, and this diverse regulatory machinery is due to the heterogeneity of different tumor types, particularly in malignant melanoma.
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Cheng JC, Bai A, Beckham TH, Marrison ST, Yount CL, Young K, Lu P, Bartlett AM, Wu BX, Keane BJ, Armeson KE, Marshall DT, Keane TE, Smith MT, Jones EE, Drake RR, Bielawska A, Norris JS, Liu X. Radiation-induced acid ceramidase confers prostate cancer resistance and tumor relapse. J Clin Invest 2013; 123:4344-58. [PMID: 24091326 DOI: 10.1172/jci64791] [Citation(s) in RCA: 94] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2012] [Accepted: 07/11/2013] [Indexed: 01/06/2023] Open
Abstract
Escape of prostate cancer (PCa) cells from ionizing radiation-induced (IR-induced) killing leads to disease progression and cancer relapse. The influence of sphingolipids, such as ceramide and its metabolite sphingosine 1-phosphate, on signal transduction pathways under cell stress is important to survival adaptation responses. In this study, we demonstrate that ceramide-deacylating enzyme acid ceramidase (AC) was preferentially upregulated in irradiated PCa cells. Radiation-induced AC gene transactivation by activator protein 1 (AP-1) binding on the proximal promoter was sensitive to inhibition of de novo ceramide biosynthesis, as demonstrated by promoter reporter and ChIP-qPCR analyses. Our data indicate that a protective feedback mechanism mitigates the apoptotic effect of IR-induced ceramide generation. We found that deregulation of c-Jun induced marked radiosensitization in vivo and in vitro, which was rescued by ectopic AC overexpression. AC overexpression in PCa clonogens that survived a fractionated 80-Gy IR course was associated with increased radioresistance and proliferation, suggesting a role for AC in radiotherapy failure and relapse. Immunohistochemical analysis of human PCa tissues revealed higher levels of AC after radiotherapy failure than those in therapy-naive PCa, prostatic intraepithelial neoplasia, or benign tissues. Addition of an AC inhibitor to an animal model of xenograft irradiation produced radiosensitization and prevention of relapse. These data indicate that AC is a potentially tractable target for adjuvant radiotherapy.
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Chen Y, Yang L, Huang S, Li Z, Zhang L, He J, Xu Z, Liu L, Cao Y, Sun L. Delivery system for DNAzymes using arginine-modified hydroxyapatite nanoparticles for therapeutic application in a nasopharyngeal carcinoma model. Int J Nanomedicine 2013; 8:3107-18. [PMID: 23983464 PMCID: PMC3747848 DOI: 10.2147/ijn.s48321] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
DNAzymes are synthetic, single-stranded, catalytic nucleic acids that bind and cleave target mRNA in a sequence-specific manner, and have been explored for genotherapeutics. One bottleneck restricting their application is the lack of an efficient delivery system. As an inorganic nanomaterial with potentially wide application, nano-hydroxyapatite particles (nHAP) have attracted increasing attention as new candidates for nonviral vectors. In this study, we developed an nHAP-based delivery system and explored its cellular uptake mechanisms, intracellular localization, and biological effects. Absorption of arginine-modified nanohydroxyapatite particles (Arg-nHAP) and DZ1 (latent membrane protein 1 [LMP1]-targeted) reached nearly 100% efficiency under in vitro conditions. Using specific inhibitors, cellular uptake of the Arg-nHAP/DZ1 complex was shown to be mediated by the energy-dependent endocytosis pathway. Further, effective intracellular delivery and nuclear localization of the complex was confirmed by confocal microscopy. Biologically, the complex successfully downregulated the expression of LMP1 in nasopharyngeal carcinoma cells. In a mouse tumor xenograft model, the complex was shown to be delivered efficiently to tumor tissue, downregulating expression of LMP1 and suppressing tumor growth. These results suggest that Arg-nHAP may be an efficient vector for nucleic acid-based drugs with potential clinical application.
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Affiliation(s)
- Yan Chen
- Center for Molecular Medicine, Xiangya Hospital, Changsha, People's Republic of China
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Cheng Q, Fan H, Ngo D, Beaulieu E, Leung P, Lo CY, Burgess R, van der Zwan YG, White SJ, Khachigian LM, Hickey MJ, Morand EF. GILZ Overexpression Inhibits Endothelial Cell Adhesive Function through Regulation of NF-κB and MAPK Activity. THE JOURNAL OF IMMUNOLOGY 2013; 191:424-33. [DOI: 10.4049/jimmunol.1202662] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Cho EA, Moloney FJ, Cai H, Au-Yeung A, China C, Scolyer RA, Yosufi B, Raftery MJ, Deng JZ, Morton SW, Hammond PT, Arkenau HT, Damian DL, Francis DJ, Chesterman CN, Barnetson RS, Halliday GM, Khachigian LM. Safety and tolerability of an intratumorally injected DNAzyme, Dz13, in patients with nodular basal-cell carcinoma: a phase 1 first-in-human trial (DISCOVER). Lancet 2013; 381:1835-43. [PMID: 23660123 PMCID: PMC3951714 DOI: 10.1016/s0140-6736(12)62166-7] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
BACKGROUND The nuclear transcription factor c-Jun is preferentially expressed in basal-cell carcinoma. Dz13 is a deoxyribozyme that targets JUN messenger RNA and has inhibited the growth of a range of tumours in mice. We did a phase 1 study to assess safety and tolerability in human beings. METHODS Adults with nodular basal-cell carcinoma were recruited from Royal Prince Alfred Hospital, Sydney, Australia, between September, 2010, and October, 2011. Patients were assigned to receive one intratumoral injected dose of 10, 30, or 100 μg Dz13, in a 50 μL volume of lipid carrier, and were assessed for adverse effects in the first 24 h then at 7, 14, and 28 days after injection. Treated tumours were surgically excised 14 days after injection and compared with the baseline biopsy samples for expression of c-Jun and tumorigenesis markers. FINDINGS Nine patients were recruited, of whom three received each dose of Dz13. All patients completed the study with no drug-related serious adverse events. No systemic Dz13 exposure was detected. c-Jun expression was reduced in the excised tumours of all nine (100%) patients, compared with baseline, and histological tumour depth had decreased in five (56%) of nine. Proportions of cells positive for caspases 3, 8, and 9 and P53 were increased, but those of cells positive for Bcl-2 and MMP-9 were decreased. Infiltration by inflammatory and immune cells was stimulated. INTERPRETATION Dz13 was safe and well tolerated after single intratumoral injections at all doses. FUNDING Cancer Institute NSW, Cancer Council Australia, and National Health and Medical Research Council.
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Affiliation(s)
- Eun-Ae Cho
- Dermatology, Sydney Medical School, Bosch Institute, Royal Prince Alfred Hospital at University of Sydney, Sydney NSW, Australia
| | - Fergal J. Moloney
- Dermatology, Sydney Medical School, Bosch Institute, Royal Prince Alfred Hospital at University of Sydney, Sydney NSW, Australia
| | - Hong Cai
- Centre for Vascular Research, University of New South Wales, Sydney NSW, Australia
| | - Annie Au-Yeung
- Centre for Vascular Research, University of New South Wales, Sydney NSW, Australia
| | - Carlos China
- Woolcock Institute of Medical Research, Sydney NSW, Australia
| | - Richard A. Scolyer
- Tissue Pathology and Diagnostic Oncology, Royal Prince Alfred Hospital, Sydney NSW, Australia
| | | | - Mark J. Raftery
- Mark Wainwright Analytical Centre, University of New South Wales, Sydney NSW, Australia
| | - Jason Z. Deng
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge MA, USA
| | - Stephen W. Morton
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge MA, USA
| | - Paula T. Hammond
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge MA, USA
| | | | - Diona L. Damian
- Dermatology, Sydney Medical School, Bosch Institute, Royal Prince Alfred Hospital at University of Sydney, Sydney NSW, Australia
| | | | - Colin N. Chesterman
- Centre for Vascular Research, University of New South Wales, Sydney NSW, Australia
| | - Ross St.C Barnetson
- Dermatology, Sydney Medical School, Bosch Institute, Royal Prince Alfred Hospital at University of Sydney, Sydney NSW, Australia
| | - Gary M. Halliday
- Dermatology, Sydney Medical School, Bosch Institute, Royal Prince Alfred Hospital at University of Sydney, Sydney NSW, Australia
| | - Levon M. Khachigian
- Centre for Vascular Research, University of New South Wales, Sydney NSW, Australia
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Zhang L, Yang L, Li JJ, Sun L. Potential use of nucleic acid-based agents in the sensitization of nasopharyngeal carcinoma to radiotherapy. Cancer Lett 2012; 323:1-10. [DOI: 10.1016/j.canlet.2012.03.030] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2012] [Revised: 03/26/2012] [Accepted: 03/26/2012] [Indexed: 11/27/2022]
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50
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Khachigian LM, Cai H, Moloney FJ, Parish CR, Chong BH, Stocker R, Barnetson RSC, Halliday GM. Destroying c-jun Messenger: new insights into biological mechanisms of DNAzyme function. Oncotarget 2012; 3:594-5. [PMID: 22805148 PMCID: PMC3442292 DOI: 10.18632/oncotarget.549] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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