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Liang Z, Hu Y, Li CY, Yau WL, Tan K, Kuang Y. VPg-based bidirectional synthetic mRNA circuits enable orthogonal protein regulation for high-resolution cell separation. Chem Commun (Camb) 2024; 60:5427-5430. [PMID: 38685869 DOI: 10.1039/d4cc01725k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
Synthetic mRNA circuits commonly sense input to produce binary output signals for cell separation. Based on virus-origin cap-independent translation initiation machinery and RBP-aptamer interaction, we designed smart synthetic mRNA-based circuits that sense single input molecules to bidirectionally tune output signals in an orthogonal manner, enabling high-resolution separation of cell populations.
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Affiliation(s)
- Zhenghua Liang
- Department of Chemical and Biological Engineering, Hong Kong University of Science and Technology, Room 5578, Academic Bldg, Clear Water Bay, Kowloon, Hong Kong.
| | - Yaxin Hu
- Department of Chemical and Biological Engineering, Hong Kong University of Science and Technology, Room 5578, Academic Bldg, Clear Water Bay, Kowloon, Hong Kong.
| | - Cheuk Yin Li
- Department of Chemical and Biological Engineering, Hong Kong University of Science and Technology, Room 5578, Academic Bldg, Clear Water Bay, Kowloon, Hong Kong.
| | - Wai Laam Yau
- Department of Chemical and Biological Engineering, Hong Kong University of Science and Technology, Room 5578, Academic Bldg, Clear Water Bay, Kowloon, Hong Kong.
| | - Kaixin Tan
- Department of Chemical and Biological Engineering, Hong Kong University of Science and Technology, Room 5578, Academic Bldg, Clear Water Bay, Kowloon, Hong Kong.
| | - Yi Kuang
- Department of Chemical and Biological Engineering, Hong Kong University of Science and Technology, Room 5578, Academic Bldg, Clear Water Bay, Kowloon, Hong Kong.
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2
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Li CY, Liang Z, Liu L, Kuang Y. Intracellular Molecules Induced Extracellular Peptide Self-Assembly for Efficient and Effective In Situ Cell Purification. Angew Chem Int Ed Engl 2023; 62:e202306533. [PMID: 37483172 DOI: 10.1002/anie.202306533] [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: 05/10/2023] [Revised: 07/18/2023] [Accepted: 07/21/2023] [Indexed: 07/25/2023]
Abstract
Synthetic messenger RNA (mRNA) switches are powerful tools for in situ cell purification, especially for cells derived from stem cells. However, the retention effectiveness of the target cells is limited by the leaky expression of toxic protein. The elimination efficiency of non-target cells is also constrained due to the lack of signal amplification. In this study, we designed a novel approach that uses synthetic mRNA switch to convey intracellular marker molecule information into spatially controlled extracellular toxic assembly formation. The approach bypasses the use of toxic protein to ensure high target cell recovery effectiveness. Meanwhile, the marker molecule information is amplified at multiple levels to ensure high non-target cell elimination effectiveness. Our approach can be tailored to meet various in situ cell purification needs, promising high-quality in situ cell purification for a wide range of biomedical applications.
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Affiliation(s)
- Cheuk Yin Li
- Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, Hong Kong
| | - Zhenghua Liang
- Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, Hong Kong
| | - Lejian Liu
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, Hong Kong
| | - Yi Kuang
- Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, Hong Kong
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3
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Skourti E, Volpe A, Lang C, Johnson P, Panagaki F, Fruhwirth GO. Spatiotemporal quantitative microRNA-155 imaging reports immune-mediated changes in a triple-negative breast cancer model. Front Immunol 2023; 14:1180233. [PMID: 37359535 PMCID: PMC10285160 DOI: 10.3389/fimmu.2023.1180233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Accepted: 05/08/2023] [Indexed: 06/28/2023] Open
Abstract
Introduction MicroRNAs are small non-coding RNAs and represent key players in physiology and disease. Aberrant microRNA expression is central to the development and progression of cancer, with various microRNAs proposed as potential cancer biomarkers and drug targets. There is a need to better understand dynamic microRNA expression changes as cancers progress and their tumor microenvironments evolve. Therefore, spatiotemporal and non-invasive in vivo microRNA quantification in tumor models would be highly beneficial. Methods We developed an in vivo microRNA detector platform in which the obtained signals are positively correlated to microRNA presence, and which permitted stable expression in cancer cells as needed for long-term experimentation in tumor biology. It exploits a radionuclide-fluorescence dual-reporter for quantitative in vivo imaging of a microRNA of choice by radionuclide tomography and fluorescence-based downstream ex vivo tissue analyses. We generated and characterized breast cancer cells stably expressing various microRNA detectors and validated them in vitro. Results We found the microRNA detector platform to report on microRNA presence in cells specifically and accurately, which was independently confirmed by real-time PCR and through microRNA modulation. Moreover, we established various breast tumor models in animals with different levels of residual immune systems and observed microRNA detector read-outs by imaging. Applying the detector platform to the progression of a triple-negative breast cancer model, we found that miR-155 upregulation in corresponding tumors was dependent on macrophage presence in tumors, revealing immune-mediated phenotypic changes in these tumors as they progressed. Conclusion While applied to immunooncology in this work, this multimodal in vivo microRNA detector platform will be useful whenever non-invasive quantification of spatiotemporal microRNA changes in living animals is of interest.
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Affiliation(s)
- Elena Skourti
- Imaging Therapies and Cancer Group, Comprehensive Cancer Centre, School of Cancer and Pharmaceutical Sciences, King’s College London, London, United Kingdom
| | - Alessia Volpe
- Imaging Therapies and Cancer Group, Comprehensive Cancer Centre, School of Cancer and Pharmaceutical Sciences, King’s College London, London, United Kingdom
| | - Cameron Lang
- Imaging Therapies and Cancer Group, Comprehensive Cancer Centre, School of Cancer and Pharmaceutical Sciences, King’s College London, London, United Kingdom
| | - Preeth Johnson
- Imaging Therapies and Cancer Group, Comprehensive Cancer Centre, School of Cancer and Pharmaceutical Sciences, King’s College London, London, United Kingdom
| | - Fani Panagaki
- Imaging Therapies and Cancer Group, Comprehensive Cancer Centre, School of Cancer and Pharmaceutical Sciences, King’s College London, London, United Kingdom
- Department of Physics, King’s College London, London, United Kingdom
| | - Gilbert O. Fruhwirth
- Imaging Therapies and Cancer Group, Comprehensive Cancer Centre, School of Cancer and Pharmaceutical Sciences, King’s College London, London, United Kingdom
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4
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A Panel of Eight miRNAs Is Deregulated in HTLV-2 Infected PBMCs and BJABGu Cell Line. Int J Mol Sci 2022; 23:ijms23147583. [PMID: 35886938 PMCID: PMC9320395 DOI: 10.3390/ijms23147583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 07/05/2022] [Accepted: 07/06/2022] [Indexed: 02/05/2023] Open
Abstract
Despite human T-cell leukemia virus type 1 (HTLV-1) and HTLV-2 being retroviruses closely related at a genomic level, HTLV-2 differs from HTLV-1 in terms of pathogenicity in both single infection and coinfection contexts. Moreover, the HTLV-2 association with clinical outcomes is still debated and several mechanisms underlying HTLV-2 infection remain unexplored as well. Cellular miRNAs are key factors in the post-transcriptional regulation of gene expression and they are known to be potential targets for several pathogens to control the host microenvironment and, in particular, escape immune responses. Here, we identified a HTLV-2-related signature of eight miRNAs (miR-125a-3p, miR-381-3p, miR-502-5p, miR-708-5p, miR-548d-5p, miR-548c-5p, miR-1-3p, and miR-511-5p) in both HTLV-2 infected PBMC and BJABGu cell lines. Altered miRNA expression patterns were correlated with the impairment of Th cell differentiation and signaling pathways driven by cytokines and transcriptional factors such as the Runt-related transcription factor (RUNX) family members. Specifically, we demonstrated that the RUNX2 protein was significantly more expressed in the presence of Tax-2 compared with Tax-1 in an in vitro cell model. To the best of our knowledge, these data represent the first contribution to elucidating the HTLV-2 mediated alteration of host cell miRNA profiles that may impact on HTLV-2 replication and persistent infection.
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5
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Fujita Y, Hirosawa M, Hayashi K, Hatani T, Yoshida Y, Yamamoto T, Saito H. A versatile and robust cell purification system with an RNA-only circuit composed of microRNA-responsive ON and OFF switches. SCIENCE ADVANCES 2022; 8:eabj1793. [PMID: 34985961 PMCID: PMC8730616 DOI: 10.1126/sciadv.abj1793] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Human induced pluripotent stem cells (iPSCs) are promising cell resources for cell therapy and drug discovery. However, iPSC-derived differentiated cells are often heterogenous and need purification using a flow cytometer, which has high cost and time consumption for large-scale purification. MicroRNAs (miRNAs) can be used as cell selection markers, because their activity differs between cell types. Here, we show miRNA-responsive ON and OFF switch mRNAs for robust cell purification. The ON switch contains a miRNA-target sequence after the polyadenylate tail, triggering translational activation by sensing the target miRNA. By designing RNA-only circuits with miRNA-ON and -OFF switch mRNAs that encode a lethal ribonuclease, Barnase, and its inhibitor, Barstar, we efficiently purified specific cell types, including human iPSCs and differentiated cardiomyocytes, without flow cytometry. Synthetic mRNA circuits composed of ON and OFF switches provide a safe, versatile, and time-saving method to purify various cell types for biological and clinical applications.
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Affiliation(s)
- Yoshihiko Fujita
- Department of Life Science Frontiers, Center for iPS Cell Research and Application, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
- Corresponding author. (H.S.); (Y.F.)
| | - Moe Hirosawa
- Department of Life Science Frontiers, Center for iPS Cell Research and Application, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Karin Hayashi
- Department of Life Science Frontiers, Center for iPS Cell Research and Application, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Takeshi Hatani
- Department of Cell Growth and Differentiation, Center for iPS Cell Research and Application, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Yoshinori Yoshida
- Department of Cell Growth and Differentiation, Center for iPS Cell Research and Application, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Takuya Yamamoto
- Department of Life Science Frontiers, Center for iPS Cell Research and Application, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
- Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Yoshida-Konoe-cho, Sakyo-ku, Kyoto 606-8501 Japan
- Medical-risk Avoidance based on iPS Cells Team, RIKEN Center for Advanced Intelligence Project (AIP), Kyoto 606-8507, Japan
| | - Hirohide Saito
- Department of Life Science Frontiers, Center for iPS Cell Research and Application, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
- Corresponding author. (H.S.); (Y.F.)
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6
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Yang L, Du W, Zheng Z, Wang L, Xiao L, Yang Q, Hao Q, Zhou J, Du J, Li J, Valencia CA, Dong B, Chow HY, Fu X, Dong B. Optimization of miR-22 expression cassette for rAAV delivery on diabetes. MOLECULAR BIOMEDICINE 2022; 3:1. [PMID: 34984525 PMCID: PMC8727650 DOI: 10.1186/s43556-021-00063-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 11/19/2021] [Indexed: 02/08/2023] Open
Abstract
MicroRNA-22 (miR-22) was suggested to be important for type 2 diabetes but its functions for this disease remained unclear. Recombinant adeno-associated virus (rAAV)-mediated miR delivery is a powerful approach to study miR functions in vivo, however, the overexpression of miR-22 by rAAV remains challenging because it is one of the most abundant miRs in the liver. In this study, a series of expression cassettes were designed and compared. It was shown that different lengths of primary miR-22 were overexpressed in HEK293 and HeLa cells but the longer ones were more efficiently expressed. miR-22 may be placed in either introns or the 3′ UTR of a transgene for efficient overexpression. RNA polymerase III or II promoters were successfully utilized for miR expression but the latter showed higher expression levels in cell lines. Specifically, miR-22 was expressed efficiently together with an EGFP gene. After screening, a liver-specific TTR promoter was chosen to overexpress miR-22 in diabetic mice fed a high-fat diet. It was shown that miR-22 was overexpressed 2-3 folds which improved the insulin sensitivity significantly. The approach utilized in this study to optimize miR overexpression is a powerful tool for the creation of efficient rAAV vectors for the other miRs.
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Affiliation(s)
- Li Yang
- Department of Geriatrics and National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China.,State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Wenya Du
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Zhaoyue Zheng
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Li Wang
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Lin Xiao
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Qingzhe Yang
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Qiukui Hao
- Department of Geriatrics and National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Jiao Zhou
- Department of Geriatrics and National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Jintao Du
- Department of Otorhinolaryngology Head & Neck Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Jun Li
- Department of Geriatrics and National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - C Alexander Valencia
- Department of Geriatrics and National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Birong Dong
- Department of Geriatrics and National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Hoi Yee Chow
- Department of Geriatrics and National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China.,State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Xianghui Fu
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China.
| | - Biao Dong
- Department of Geriatrics and National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China. .,State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China.
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7
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Oesinghaus L, Simmel FC. Kontrolle von Genexpression in Säugetierzellen mithilfe von parallel schaltbaren Guide‐RNAs für Cas12a**. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202107258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Lukas Oesinghaus
- Physics Department, E14 TU München Am Coulombwall 4a 85748 Garching Deutschland
| | - Friedrich C. Simmel
- Physics Department, E14 TU München Am Coulombwall 4a 85748 Garching Deutschland
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8
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Oesinghaus L, Simmel FC. Controlling Gene Expression in Mammalian Cells Using Multiplexed Conditional Guide RNAs for Cas12a*. Angew Chem Int Ed Engl 2021; 60:23894-23902. [PMID: 34533878 PMCID: PMC8596743 DOI: 10.1002/anie.202107258] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 08/13/2021] [Indexed: 12/26/2022]
Abstract
Spatiotemporal control of the activity of CRISPR-associated (Cas) proteins is of considerable interest for basic research and therapeutics. Here, we show that conditional guide RNAs (gRNAs) for Cas12a can be transcribed in mammalian cells by RNA polymerase II, followed by activation via input-dependent processing of the 3' tail of the gRNA transcript. We demonstrate processing using an RNA strand displacement mechanism, as well as microRNA-dependent processing, and cleavage by a guanine-responsive ribozyme. We further demonstrate that Cas12a along with several independently switchable gRNAs can be compactly integrated on a single transcript using stabilizing RNA triplexes, providing a route towards Cas12a-based gene regulation constructs with multi-input switching capabilities. The principle is shown to work in HEK and mouse fibroblast cells using luminescence, fluorescence, and is also demonstrated for the conditional upregulation of an endogenous gene.
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Affiliation(s)
- Lukas Oesinghaus
- Physics Department, E14TU MunichAm Coulombwall 4a85748GarchingGermany
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miRNAs Involved in Esophageal Carcinogenesis and miRNA-Related Therapeutic Perspectives in Esophageal Carcinoma. Int J Mol Sci 2021; 22:ijms22073640. [PMID: 33807389 PMCID: PMC8037581 DOI: 10.3390/ijms22073640] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 03/26/2021] [Accepted: 03/29/2021] [Indexed: 12/24/2022] Open
Abstract
MicroRNAs (miRNAs) are small non-coding RNAs that play a pivotal role in many aspects of cell biology, including cancer development. Within esophageal cancer, miRNAs have been proved to be involved in all phases of carcinogenesis, from initiation to metastatic spread. Several miRNAs have been found to be dysregulated in esophageal premalignant lesions, namely Barrett’s esophagus, Barrett’s dysplasia, and squamous dysplasia. Furthermore, numerous studies have investigated the alteration in the expression levels of many oncomiRNAs and tumor suppressor miRNAs in esophageal squamous cell carcinoma and esophageal adenocarcinoma, thus proving how miRNAs are able modulate crucial regulatory pathways of cancer development. Considering these findings, miRNAs may have a role not only as a diagnostic and prognostic tool, but also as predictive biomarker of response to anti-cancer therapies and as potential therapeutic targets. This review aims to summarize several studies on the matter, focusing on the possible diagnostic–therapeutic implications.
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Gollavilli PN, Parma B, Siddiqui A, Yang H, Ramesh V, Napoli F, Schwab A, Natesan R, Mielenz D, Asangani IA, Brabletz T, Pilarsky C, Ceppi P. The role of miR-200b/c in balancing EMT and proliferation revealed by an activity reporter. Oncogene 2021; 40:2309-2322. [PMID: 33654197 PMCID: PMC7994202 DOI: 10.1038/s41388-021-01708-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 02/08/2021] [Accepted: 02/09/2021] [Indexed: 12/16/2022]
Abstract
Since their discovery, microRNAs (miRNAs) have been widely studied in almost every aspect of biology and medicine, leading to the identification of important gene regulation circuits and cellular mechanisms. However, investigations are generally focused on the analysis of their downstream targets and biological functions in overexpression and knockdown approaches, while miRNAs endogenous levels and activity remain poorly understood. Here, we used the cellular plasticity-regulating process of epithelial-to-mesenchymal transition (EMT) as a model to show the efficacy of a fluorescent sensor to separate cells with distinct EMT signatures, based on miR-200b/c activity. The system was further combined with a CRISPR-Cas9 screening platform to unbiasedly identify miR-200b/c upstream regulating genes. The sensor allows to infer miRNAs fundamental biological properties, as profiling of sorted cells indicated miR-200b/c as a molecular switch between EMT differentiation and proliferation, and suggested a role for metabolic enzymes in miR-200/EMT regulation. Analysis of miRNAs endogenous levels and activity for in vitro and in vivo applications could lead to a better understanding of their biological role in physiology and disease.
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Affiliation(s)
- Paradesi Naidu Gollavilli
- Interdisciplinary Center for Clinical Research (IZKF), Friedrich-Alexander University of Erlangen-Nuremberg (FAU), Erlangen, Germany
| | - Beatrice Parma
- Interdisciplinary Center for Clinical Research (IZKF), Friedrich-Alexander University of Erlangen-Nuremberg (FAU), Erlangen, Germany
| | - Aarif Siddiqui
- Interdisciplinary Center for Clinical Research (IZKF), Friedrich-Alexander University of Erlangen-Nuremberg (FAU), Erlangen, Germany.,Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Denmark
| | - Hai Yang
- Department of Surgery, Friedrich-Alexander University of Erlangen- Nuremberg (FAU) and University Hospital of Erlangen, Erlangen, Germany
| | - Vignesh Ramesh
- Interdisciplinary Center for Clinical Research (IZKF), Friedrich-Alexander University of Erlangen-Nuremberg (FAU), Erlangen, Germany
| | - Francesca Napoli
- Interdisciplinary Center for Clinical Research (IZKF), Friedrich-Alexander University of Erlangen-Nuremberg (FAU), Erlangen, Germany.,Department of Oncology at San Luigi Hospital, University of Turin, Turin, Italy
| | - Annemarie Schwab
- Interdisciplinary Center for Clinical Research (IZKF), Friedrich-Alexander University of Erlangen-Nuremberg (FAU), Erlangen, Germany
| | - Ramakrishnan Natesan
- Department of Cancer Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA
| | - Dirk Mielenz
- Department of Molecular Immunology, Friedrich-Alexander University of Erlangen-Nuremberg, Erlangen, Germany
| | - Irfan Ahmed Asangani
- Department of Cancer Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA
| | - Thomas Brabletz
- Department of Experimental Medicine-I, Friedrich-Alexander University of Erlangen-Nuremberg, Erlangen, Germany
| | - Christian Pilarsky
- Department of Surgery, Friedrich-Alexander University of Erlangen- Nuremberg (FAU) and University Hospital of Erlangen, Erlangen, Germany
| | - Paolo Ceppi
- Interdisciplinary Center for Clinical Research (IZKF), Friedrich-Alexander University of Erlangen-Nuremberg (FAU), Erlangen, Germany. .,Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Denmark.
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11
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Frei T, Cella F, Tedeschi F, Gutiérrez J, Stan GB, Khammash M, Siciliano V. Characterization and mitigation of gene expression burden in mammalian cells. Nat Commun 2020; 11:4641. [PMID: 32934213 PMCID: PMC7492461 DOI: 10.1038/s41467-020-18392-x] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 08/18/2020] [Indexed: 12/19/2022] Open
Abstract
Despite recent advances in circuit engineering, the design of genetic networks in mammalian cells is still painstakingly slow and fraught with inexplicable failures. Here, we demonstrate that transiently expressed genes in mammalian cells compete for limited transcriptional and translational resources. This competition results in the coupling of otherwise independent exogenous and endogenous genes, creating a divergence between intended and actual function. Guided by a resource-aware mathematical model, we identify and engineer natural and synthetic miRNA-based incoherent feedforward loop (iFFL) circuits that mitigate gene expression burden. The implementation of these circuits features the use of endogenous miRNAs as elementary components of the engineered iFFL device, a versatile hybrid design that allows burden mitigation to be achieved across different cell-lines with minimal resource requirements. This study establishes the foundations for context-aware prediction and improvement of in vivo synthetic circuit performance, paving the way towards more rational synthetic construct design in mammalian cells.
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Affiliation(s)
- Timothy Frei
- Department of Biosystems Science and Engineering (D-BSSE), ETH Zürich, Mattenstrasse 26, Basel, 4058, Switzerland
| | - Federica Cella
- Istituto Italiano di Tecnologia-IIT, Largo Barsanti e Matteucci, Naples, 80125, Italy
- University of Genoa, Genoa, 16132, Italy
| | - Fabiana Tedeschi
- Istituto Italiano di Tecnologia-IIT, Largo Barsanti e Matteucci, Naples, 80125, Italy
| | - Joaquín Gutiérrez
- Department of Biosystems Science and Engineering (D-BSSE), ETH Zürich, Mattenstrasse 26, Basel, 4058, Switzerland
| | - Guy-Bart Stan
- Department of Bioengineering and Centre for Synthetic Biology, Imperial College London, London, SW7 2AZ, UK
| | - Mustafa Khammash
- Department of Biosystems Science and Engineering (D-BSSE), ETH Zürich, Mattenstrasse 26, Basel, 4058, Switzerland.
| | - Velia Siciliano
- Istituto Italiano di Tecnologia-IIT, Largo Barsanti e Matteucci, Naples, 80125, Italy.
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12
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Evsen L, Li X, Zhang S, Razin S, Doetzlhofer A. let-7 miRNAs inhibit CHD7 expression and control auditory-sensory progenitor cell behavior in the developing inner ear. Development 2020; 147:147/15/dev183384. [PMID: 32816902 DOI: 10.1242/dev.183384] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 07/07/2020] [Indexed: 11/20/2022]
Abstract
The evolutionarily conserved lethal-7 (let-7) microRNAs (miRNAs) are well-known activators of proliferative quiescence and terminal differentiation. However, in the murine auditory organ, let-7g overexpression delays the differentiation of mechano-sensory hair cells (HCs). To address whether the role of let-7 in auditory-sensory differentiation is conserved among vertebrates, we manipulated let-7 levels within the chicken auditory organ: the basilar papilla. Using a let-7 sponge construct to sequester let-7 miRNAs, we found that endogenous let-7 miRNAs are essential for limiting the self-renewal of HC progenitor cells. Furthermore, let-7b overexpression experiments revealed that, similar to mice, higher than normal let-7 levels slow/delay HC differentiation. Finally, we identify CHD7, a chromatin remodeler, as a candidate for mediating the repressive function of let-7 in HC differentiation and inner ear morphogenesis. Our analysis uncovered an evolutionarily conserved let-7-5p-binding site within the chicken Chd7 gene and its human and murine homologs, and we show that let-7g overexpression in mice limits CHD7 expression in the developing inner ear, retina and brain. Haploinsufficiency of CHD7 in humans causes CHARGE syndrome and attenuation of let-7 function may be an effective method for treating CHD7 deficiency.
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Affiliation(s)
- Lale Evsen
- The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Xiaojun Li
- The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Shuran Zhang
- The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Sharjil Razin
- The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Angelika Doetzlhofer
- The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA .,Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
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Su J, Wu F, Xia H, Wu Y, Liu S. Accurate cancer cell identification and microRNA silencing induced therapy using tailored DNA tetrahedron nanostructures. Chem Sci 2019; 11:80-86. [PMID: 32110359 PMCID: PMC7012044 DOI: 10.1039/c9sc04823e] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 10/30/2019] [Indexed: 12/16/2022] Open
Abstract
Accurate cancer cell identification and efficient therapy are extremely desirable and challenging in clinics. Here, we reported the first example of DNA tetrahedron nanostructures (DTNSs) to real-time monitor and image three intracellular miRNAs based on the fluorescence "OFF" to "ON" mode, as well as to realize cancer therapy induced by miRNA silencing. DTNSs were self-assembled by seven customized single-stranded nucleic acid chains containing three recognition sequences for target miRNAs. In the three vertexes of DTNSs, fluorophores and quenchers were brought into close proximity, inducing fluorescence quenching. In the presence of target miRNAs, fluorophores and quenchers would be separated, resulting in fluorescence recovery. Owing to the unique tetrahedron-like spatial structure, DTNSs displayed improved resistance to enzymatic digestion and high cellular uptake efficiency, and exhibited the ability to simultaneously monitor three intracellular miRNAs. DTNSs not only effectively distinguished tumor cells from normal cells, but also identified cancer cell subtypes, which avoided false-positive signals and significantly improved the accuracy of cancer diagnosis. Moreover, the DTNSs could also act as an anti-cancer drug; antagomir-21 (one recognition sequence) was detached from DTNSs to silence endogenous miRNA-21 inside cells, which would suppress cancer cell migration and invasion, and finally induce cancer cell apoptosis; the result was demonstrated by experiments in vitro and in vivo. It is anticipated that the development of smart nanoplatforms will open a door for cancer diagnosis and treatment in clinical systems.
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Affiliation(s)
- Juan Su
- Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device , School of Chemistry and Chemical Engineering , Southeast University , Nanjing 211189 , China
| | - Fubing Wu
- Department of Pathology , School of Basic Medical Sciences , Department of Oncology , The Affiliated Sir Run Run Hospital , State Key Laboratory of Reproductive Medicine , Key Laboratory of Antibody Technique of National Health Commission , Nanjing Medical University , Nanjing 211166 , China
| | - Hongping Xia
- Department of Pathology , School of Basic Medical Sciences , Department of Oncology , The Affiliated Sir Run Run Hospital , State Key Laboratory of Reproductive Medicine , Key Laboratory of Antibody Technique of National Health Commission , Nanjing Medical University , Nanjing 211166 , China
| | - Yafeng Wu
- Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device , School of Chemistry and Chemical Engineering , Southeast University , Nanjing 211189 , China
| | - Songqin Liu
- Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device , School of Chemistry and Chemical Engineering , Southeast University , Nanjing 211189 , China
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14
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Zhao J, Chu H, Zhao Y, Lu Y, Li L. A NIR Light Gated DNA Nanodevice for Spatiotemporally Controlled Imaging of MicroRNA in Cells and Animals. J Am Chem Soc 2019; 141:7056-7062. [DOI: 10.1021/jacs.9b01931] [Citation(s) in RCA: 154] [Impact Index Per Article: 30.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Jian Zhao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety and CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Hongqian Chu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety and CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Ya Zhao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety and CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Yi Lu
- Department of Chemistry, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Lele Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety and CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
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15
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Markova SV, Larionova MD, Vysotski ES. Shining Light on the Secreted Luciferases of Marine Copepods: Current Knowledge and Applications. Photochem Photobiol 2019; 95:705-721. [PMID: 30585639 DOI: 10.1111/php.13077] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Accepted: 12/18/2018] [Indexed: 01/02/2023]
Abstract
Copepod luciferases-a family of small secretory proteins of 18.4-24.3 kDa, including a signal peptide-are responsible for bright secreted bioluminescence of some marine copepods. The copepod luciferases use coelenterazine as a substrate to produce blue light in a simple oxidation reaction without any additional cofactors. They do not share sequence or structural similarity with other identified bioluminescent proteins including coelenterazine-dependent Renilla and Oplophorus luciferases. The small size, strong luminescence activity and high stability, including thermostability, make secreted copepod luciferases very attractive candidates as reporter proteins which are particularly useful for nondisruptive reporter assays and for high-throughput format. The most known and extensively investigated representatives of this family are the first cloned GpLuc and MLuc luciferases from copepods Gaussia princeps and Metridia longa, respectively. Immediately after cloning, these homologous luciferases were successfully applied as bioluminescent reporters in vivo and in vitro, and since then, the scope of their applications continues to grow. This review is an attempt to systemize and critically evaluate the data scattered through numerous articles regarding the main structural features of copepod luciferases, their luminescent and physicochemical properties. We also review the main trends of their application as bioluminescent reporters in cell and molecular biology.
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Affiliation(s)
- Svetlana V Markova
- Photobiology Laboratory, Institute of Biophysics SB RAS, Federal Research Center "Krasnoyarsk Science Center SB RAS", Krasnoyarsk, Russia.,Siberian Federal University, Krasnoyarsk, Russia.,N.N. Blokhin National Medical Research Center of Oncology, Ministry of Health of Russia, Moscow, Russia
| | - Marina D Larionova
- Photobiology Laboratory, Institute of Biophysics SB RAS, Federal Research Center "Krasnoyarsk Science Center SB RAS", Krasnoyarsk, Russia.,N.N. Blokhin National Medical Research Center of Oncology, Ministry of Health of Russia, Moscow, Russia
| | - Eugene S Vysotski
- Photobiology Laboratory, Institute of Biophysics SB RAS, Federal Research Center "Krasnoyarsk Science Center SB RAS", Krasnoyarsk, Russia.,N.N. Blokhin National Medical Research Center of Oncology, Ministry of Health of Russia, Moscow, Russia
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16
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Na HK, Wi JS, Son HY, Ok JG, Huh YM, Lee TG. Discrimination of single nucleotide mismatches using a scalable, flexible, and transparent three-dimensional nanostructure-based plasmonic miRNA sensor with high sensitivity. Biosens Bioelectron 2018; 113:39-45. [DOI: 10.1016/j.bios.2018.04.033] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 04/06/2018] [Accepted: 04/16/2018] [Indexed: 01/20/2023]
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17
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Hu J, Liu MH, Zhang CY. Integration of isothermal amplification with quantum dot-based fluorescence resonance energy transfer for simultaneous detection of multiple microRNAs. Chem Sci 2018; 9:4258-4267. [PMID: 29780556 PMCID: PMC5944210 DOI: 10.1039/c8sc00832a] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 04/10/2018] [Indexed: 12/14/2022] Open
Abstract
The integration of quantum dot-based fluorescence resonance energy transfer with rolling circle amplification enables simultaneous sensitive detection of multiple microRNAs.
MicroRNAs (miRNAs) are small non-coding RNAs that regulate important physiological processes, and their dysregulation is associated with various human diseases. Simultaneous sensitive detection of multiple miRNAs may facilitate early clinical diagnosis. In this research, we demonstrate for the first time the integration of hyperbranched rolling circle amplification (HRCA) with quantum dot (QD)-based fluorescence resonance energy transfer (FRET) for the simultaneous detection of multiple microRNAs with a single-color QD as the donor and two fluorescent dyes as the acceptors. We used miR-21 and miR-221 as target miRNAs. We designed two circular templates which may specifically hybridize with miR-21 and miR-221, respectively, for the initiation of the HRCA reaction. The products of the HRCA reaction may hybridize with both capture probes and reporter probes to form the biotinylated acceptor-labeled sandwich hybrids. The resultant sandwich hybrids can assemble on the surface of the QD, enabling efficient FRET between the QD and the acceptors, with the Cy3 signal indicating the presence of miR-21 and the Texas Red signal indicating the presence of miR-221. This assay has significant advantages of simplicity and low cost. The HRCA reaction can be performed under isothermal conditions with the same reverse primer for different target miRNAs, and the products of the HRCA reaction for both miR-21 and miR-221 can specifically hybridize with the same capture probes. This assay exhibits excellent specificity and high sensitivity with a detection limit of 7.2 × 10–16 M for miR-21 and 1.6 × 10–17 M for miR-221, and it can be used for simultaneous detection of multiple miRNAs in human cancer cells, holding great potential in biomedical research and clinical diagnosis.
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Affiliation(s)
- Juan Hu
- College of Chemistry, Chemical Engineering and Materials Science , Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong , Key Laboratory of Molecular and Nano Probes , Ministry of Education , Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals , Shandong Normal University , Jinan 250014 , China . ; ; Tel: +86 531 86186033
| | - Ming-Hao Liu
- College of Chemistry, Chemical Engineering and Materials Science , Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong , Key Laboratory of Molecular and Nano Probes , Ministry of Education , Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals , Shandong Normal University , Jinan 250014 , China . ; ; Tel: +86 531 86186033
| | - Chun-Yang Zhang
- College of Chemistry, Chemical Engineering and Materials Science , Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong , Key Laboratory of Molecular and Nano Probes , Ministry of Education , Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals , Shandong Normal University , Jinan 250014 , China . ; ; Tel: +86 531 86186033
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18
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Eckenfelder A, Ségéral E, Pinzón N, Ulveling D, Amadori C, Charpentier M, Nidelet S, Concordet JP, Zagury JF, Paillart JC, Berlioz-Torrent C, Seitz H, Emiliani S, Gallois-Montbrun S. Argonaute proteins regulate HIV-1 multiply spliced RNA and viral production in a Dicer independent manner. Nucleic Acids Res 2017; 45:4158-4173. [PMID: 28003477 PMCID: PMC5397155 DOI: 10.1093/nar/gkw1289] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Accepted: 12/13/2016] [Indexed: 11/30/2022] Open
Abstract
Argonaute (Ago) proteins associate with microRNAs (miRNAs) to form the core of the RNA-induced silencing complex (RISC) that mediates post-transcriptional gene silencing of target mRNAs. As key players in anti-viral defense, Ago proteins are thought to have the ability to interact with human immunodeficiency virus type 1 (HIV-1) RNA. However, the role of this interaction in regulating HIV-1 replication has been debated. Here, we used high throughput sequencing of RNA isolated by cross-linking immunoprecipitation (HITS-CLIP) to explore the interaction between Ago2 and HIV-1 RNA in infected cells. By only considering reads of 50 nucleotides length in our analysis, we identified more than 30 distinct binding sites for Ago2 along the viral RNA genome. Using reporter assays, we found four binding sites, located near splice donor sites, capable of repressing Luciferase gene expression in an Ago-dependent manner. Furthermore, inhibition of Ago1 and Ago2 levels in cells expressing HIV-1 led to an increase of viral multiply spliced transcripts and to a strong reduction in the extracellular CAp24 level. Depletion of Dicer did not affect these activities. Our results highlight a new role of Ago proteins in the control of multiply spliced HIV-1 transcript levels and viral production, independently of the miRNA pathway.
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Affiliation(s)
- Agathe Eckenfelder
- INSERM, U1016, Institut Cochin, Paris 75014, France.,CNRS, UMR8104, Paris 75014, France.,Université Paris Descartes, Sorbonne Paris Cité, Paris 75006, France
| | - Emmanuel Ségéral
- INSERM, U1016, Institut Cochin, Paris 75014, France.,CNRS, UMR8104, Paris 75014, France.,Université Paris Descartes, Sorbonne Paris Cité, Paris 75006, France
| | - Natalia Pinzón
- CNRS, UPR 1142, Institut de Génétique Humaine, Montpellier 34396, France
| | - Damien Ulveling
- CNAM, Laboratoire Génomique, Bioinformatique et Applications (EA 4627), Paris 75003, France
| | - Céline Amadori
- INSERM, U1016, Institut Cochin, Paris 75014, France.,CNRS, UMR8104, Paris 75014, France.,Université Paris Descartes, Sorbonne Paris Cité, Paris 75006, France
| | - Marine Charpentier
- INSERM, U1154, CNRS, UMR7196, Museum National d'Histoire Naturelle, Paris 75231, France
| | - Sabine Nidelet
- Plateforme MGX, Institut de Génomique Fonctionnelle, CNRS, UMR5203, INSERM, U661, Montpellier 34094, France
| | - Jean-Paul Concordet
- INSERM, U1154, CNRS, UMR7196, Museum National d'Histoire Naturelle, Paris 75231, France
| | - Jean-François Zagury
- CNAM, Laboratoire Génomique, Bioinformatique et Applications (EA 4627), Paris 75003, France
| | - Jean-Christophe Paillart
- Architecture et Réactivité de l'ARN, Université de Strasbourg, CNRS, IBMC, Strasbourg 67084, France
| | - Clarisse Berlioz-Torrent
- INSERM, U1016, Institut Cochin, Paris 75014, France.,CNRS, UMR8104, Paris 75014, France.,Université Paris Descartes, Sorbonne Paris Cité, Paris 75006, France
| | - Hervé Seitz
- CNRS, UPR 1142, Institut de Génétique Humaine, Montpellier 34396, France
| | - Stéphane Emiliani
- INSERM, U1016, Institut Cochin, Paris 75014, France.,CNRS, UMR8104, Paris 75014, France.,Université Paris Descartes, Sorbonne Paris Cité, Paris 75006, France
| | - Sarah Gallois-Montbrun
- INSERM, U1016, Institut Cochin, Paris 75014, France.,CNRS, UMR8104, Paris 75014, France.,Université Paris Descartes, Sorbonne Paris Cité, Paris 75006, France
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19
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Deletion of the B-B' and C-C' regions of inverted terminal repeats reduces rAAV productivity but increases transgene expression. Sci Rep 2017; 7:5432. [PMID: 28710345 PMCID: PMC5511163 DOI: 10.1038/s41598-017-04054-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 05/09/2017] [Indexed: 11/30/2022] Open
Abstract
Inverted terminal repeats (ITRs) of the adeno-associated virus (AAV) are essential for rescue, replication, packaging, and integration of the viral genome. While ITR mutations have been identified in previous reports, we designed a new truncated ITR lacking the B-B’ and C-C’ regions named as ITRΔBC and investigated its effects on viral genome replication, packaging, and expression of recombinant AAV (rAAV). The packaging ability was compared between ITRΔBC rAAV and wild-type (wt) ITR rAAV. Our results showed the productivity of ITRΔBC rAAV was reduced 4-fold, which is consistent with the 8-fold decrease in the replication of viral genomic DNA of ITRΔBC rAAV compared with wt ITR rAAV. Surprisingly, transgene expression was significantly higher for ITRΔBC rAAV. A preliminary exploration of the underlying mechanisms was carried out by inhibiting and degrading the ataxia telangiectasia mutated (ATM) protein and the Mre11 complex (MRN), respectively, since the rAAV expression was inhibited by the ATM and/or MRN through cis interaction or binding with wt ITRs. We demonstrated that the inhibitory effects were weakened on ITRΔBC rAAV expression. This study suggests deletion in ITR can affect the transgene expression of AAV, which provides a new way to improve the AAV expression through ITRs modification.
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20
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Reid CA, Boye SL, Hauswirth WW, Lipinski DM. miRNA-mediated post-transcriptional silencing of transgenes leads to increased adeno-associated viral vector yield and targeting specificity. Gene Ther 2017; 24:462-469. [DOI: 10.1038/gt.2017.50] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2017] [Revised: 06/05/2017] [Accepted: 06/08/2017] [Indexed: 12/21/2022]
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21
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Lee YH, Hsueh YW, Peng YH, Chang KC, Tsai KJ, Sun HS, Su IJ, Chiang PM. Low-cell-number, single-tube amplification (STA) of total RNA revealed transcriptome changes from pluripotency to endothelium. BMC Biol 2017; 15:22. [PMID: 28327113 PMCID: PMC5360049 DOI: 10.1186/s12915-017-0359-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 02/15/2017] [Indexed: 12/24/2022] Open
Abstract
Background In addition to messenger RNA (mRNA), noncoding RNAs (ncRNAs) are essential components in cellular machineries for translation and splicing. Besides their housekeeping functions, ncRNAs are involved in cell type-specific regulation of translation, mRNA stability, genome structure, and accessibility. To have a comprehensive understanding of the identities and functions of different cell types, a method to comprehensively quantify both mRNA and ncRNA in a sensitive manner is highly desirable. Methods Here we tried to develop a system capable of concurrently profiling both mRNA and ncRNA by polyadenylating RNA in samples before reverse transcription. The sensitivity of the system was maximized by avoiding purification from cell lysis to amplified cDNA and by optimizing the buffer conditions. The single-tube amplification (STA) system was applied to single to 100 cells of 293T cells, human pluripotent stem cells (hPSCs) and their differentiated endothelial progenies to validate its quantitative power and sensitivity by qPCR and high-throughput sequencing. Results Using microRNA (miRNA) as an example, we showed that complementary DNA (cDNA) from ncRNAs could be amplified and specifically detected from a few cells within a single tube. The sensitivity of the system was maximized by avoiding purification from cell lysis to amplified cDNA and by optimizing the buffer conditions. With 100 human embryonic stem cells (hESCs) and their differentiated endothelial cells as input for high-throughput sequencing, the single-tube amplification (STA) system revealed both well-known and other miRNAs selectively enriched in each cell type. The selective enrichment of the miRNAs was further verified by qPCR with 293FT cells and a human induced pluripotent stem cell (hiPSC) line. In addition, the detection of other non-miRNA transcripts indicated that the STA target was not limited to miRNA, but extended to other ncRNAs and mRNAs as well. Finally, the STA system was capable of detecting miRNA and mRNA expression down to single cells, albeit with some loss of sensitivity and power. Conclusions Overall, STA offered a simple and sensitive way to concurrently quantify both mRNA and ncRNA expression in low-cell-number samples for both qPCR and high-throughput sequencing. Electronic supplementary material The online version of this article (doi:10.1186/s12915-017-0359-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yi-Hsuan Lee
- Department of Pathology, National Taiwan University Hospital, Taipei, Taiwan
| | - Ya-Wen Hsueh
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, No. 35, Xiaodong Rd, Tainan, 70457, Taiwan
| | - Yao-Hung Peng
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, No. 35, Xiaodong Rd, Tainan, 70457, Taiwan
| | - Kung-Chao Chang
- Department of Pathology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Kuen-Jer Tsai
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, No. 35, Xiaodong Rd, Tainan, 70457, Taiwan
| | - H Sunny Sun
- Institute of Molecular Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Ih-Jen Su
- Division of Infectious Diseases, National Health Research Institutes, Tainan, Taiwan
| | - Po-Min Chiang
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, No. 35, Xiaodong Rd, Tainan, 70457, Taiwan.
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22
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Kumar N, Barua S, Thachamvally R, Tripathi BN. Systems Perspective of Morbillivirus Replication. J Mol Microbiol Biotechnol 2016; 26:389-400. [DOI: 10.1159/000448842] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Accepted: 08/02/2016] [Indexed: 11/19/2022] Open
Abstract
Systems biology refers to system-wide changes in biological components such as RNA/DNA (genomics), protein (proteomics) and lipids (lipidomics). In this review, we provide comprehensive information about morbillivirus replication. Besides discussing the role of individual viral/host proteins in virus replication, we also discuss how systems-level analyses could improve our understanding of morbillivirus replication, host-pathogen interaction, immune response and disease resistance. Finally, we discuss how viroinformatics is likely to provide important insights for understanding genome-genome, genome-protein and protein-protein interactions.
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23
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Sladitschek HL, Neveu PA. Bidirectional Promoter Engineering for Single Cell MicroRNA Sensors in Embryonic Stem Cells. PLoS One 2016; 11:e0155177. [PMID: 27152616 PMCID: PMC4859538 DOI: 10.1371/journal.pone.0155177] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Accepted: 04/03/2016] [Indexed: 12/19/2022] Open
Abstract
MicroRNAs have emerged as important markers and regulators of cell identity. Precise measurements of cellular miRNA levels rely traditionally on RNA extraction and thus do not allow to follow miRNA expression dynamics at the level of single cells. Non-invasive miRNA sensors present an ideal solution but they critically depend on the performance of suitable ubiquitous promoters that reliably drive expression both in pluripotent and differentiated cell types. Here we describe the engineering of bidirectional promoters that drive the expression of precise ratiometric fluorescent miRNA sensors in single mouse embryonic stem cells (mESCs) and their differentiated derivatives. These promoters are based on combinations of the widely used CAG, EF1α and PGK promoters as well as the CMV and PGK enhancers. miR-142-3p, which is known to be bimodally expressed in mESCs, served as a model miRNA to gauge the precision of the sensors. The performance of the resulting miRNA sensors was assessed by flow cytometry in single stable transgenic mESCs undergoing self-renewal or differentiation. EF1α promoters arranged back-to-back failed to drive the robustly correlated expression of two transgenes. Back-to-back PGK promoters were shut down during mESC differentiation. However, we found that a back-to-back arrangement of CAG promoters with four CMV enhancers provided both robust expression in mESCs undergoing differentiation and the best signal-to-noise for measurement of miRNA activity in single cells among all the sensors we tested. Such a bidirectional promoter is therefore particularly well suited to study the dynamics of miRNA expression during cell fate transitions at the single cell level.
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Affiliation(s)
- Hanna L. Sladitschek
- Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, Heidelberg, Baden-Württemberg, Germany
| | - Pierre A. Neveu
- Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, Heidelberg, Baden-Württemberg, Germany
- * E-mail:
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24
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Shah P, Choi SW, Kim HJ, Cho SK, Bhang YJ, Ryu MY, Thulstrup PW, Bjerrum MJ, Yang SW. Locking-to-unlocking system is an efficient strategy to design DNA/silver nanoclusters (AgNCs) probe for human miRNAs. Nucleic Acids Res 2015; 44:e57. [PMID: 26681688 PMCID: PMC4824086 DOI: 10.1093/nar/gkv1377] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Accepted: 11/19/2015] [Indexed: 12/18/2022] Open
Abstract
MicroRNAs (miRNAs), small non-coding RNA molecules, are important biomarkers for research and medical purposes. Here, we describe the development of a fast and simple method using highly fluorescent oligonucleotide-silver nanocluster probes (DNA/AgNCs) to efficiently detect specific miRNAs. Due to the great sequence diversity of miRNAs in humans and other organisms, a uniform strategy for miRNA detection is attractive. The concept presented is an oligonucleotide-based locking-to-unlocking system that can be endowed with miRNA complementarity while maintaining the same secondary structure. The locking-to-unlocking system is based on fold-back anchored DNA templates that consist of a cytosine-rich loop for AgNCs stabilization, an miRNA recognition site and an overlap region for hairpin stabilization. When an miRNA is recognized, fluorescence in the visible region is specifically extinguished in a concentration-dependent manner. Here, the exact composition of the fold-back anchor for the locking-to-unlocking system has been systematically optimized, balancing propensity for loop-structure formation, encapsulation of emissive AgNCs and target sensitivity. It is demonstrated that the applied strategy successfully can detect a number of cancer related miRNAs in RNA extracts from human cancer cell lines.
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Affiliation(s)
- Pratik Shah
- UNIK Center for Synthetic Biology, University of Copenhagen, Thorvaldsensvej 40, DK-1871 Frederiksberg C, Copenhagen, Denmark
| | - Suk Won Choi
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100, Copenhagen, Denmark
| | - Ho-Jin Kim
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100, Copenhagen, Denmark
| | - Seok Keun Cho
- UNIK Center for Synthetic Biology, University of Copenhagen, Thorvaldsensvej 40, DK-1871 Frederiksberg C, Copenhagen, Denmark
| | - Yong-Joo Bhang
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100, Copenhagen, Denmark
| | - Moon Young Ryu
- UNIK Center for Synthetic Biology, University of Copenhagen, Thorvaldsensvej 40, DK-1871 Frederiksberg C, Copenhagen, Denmark
| | - Peter Waaben Thulstrup
- Seoulin Bioscience Co. Ltd. 4F. #A, KOREA BIO PARK, 700, Daewangpangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, Korea
| | - Morten Jannik Bjerrum
- Seoulin Bioscience Co. Ltd. 4F. #A, KOREA BIO PARK, 700, Daewangpangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, Korea
| | - Seong Wook Yang
- UNIK Center for Synthetic Biology, University of Copenhagen, Thorvaldsensvej 40, DK-1871 Frederiksberg C, Copenhagen, Denmark Department of Systems Biology, College of Life Science and Biotechnology, Yonsei University, Korea
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25
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Trapani I, Toriello E, de Simone S, Colella P, Iodice C, Polishchuk EV, Sommella A, Colecchi L, Rossi S, Simonelli F, Giunti M, Bacci ML, Polishchuk RS, Auricchio A. Improved dual AAV vectors with reduced expression of truncated proteins are safe and effective in the retina of a mouse model of Stargardt disease. Hum Mol Genet 2015; 24:6811-25. [PMID: 26420842 PMCID: PMC4634381 DOI: 10.1093/hmg/ddv386] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Accepted: 09/14/2015] [Indexed: 01/02/2023] Open
Abstract
Stargardt disease (STGD1) due to mutations in the large ABCA4 gene is the most common inherited macular degeneration in humans. We have shown that dual adeno-associated viral (AAV) vectors effectively transfer ABCA4 to the retina of Abca4-/- mice. However, they express both lower levels of transgene compared with a single AAV and truncated proteins. To increase productive dual AAV concatemerization, which would overcome these limitations, we have explored the use of either various regions of homology or heterologous inverted terminal repeats (ITR). In addition, we tested the ability of various degradation signals to decrease the expression of truncated proteins. We found the highest levels of transgene expression using regions of homology based on either alkaline phosphatase or the F1 phage (AK). The use of heterologous ITR does not decrease the levels of truncated proteins relative to full-length ABCA4 and impairs AAV vector production. Conversely, the inclusion of the CL1 degradation signal results in the selective degradation of truncated proteins from the 5'-half without affecting full-length protein production. Therefore, we developed dual AAV hybrid ABCA4 vectors including homologous ITR2, the photoreceptor-specific G protein-coupled receptor kinase 1 promoter, the AK region of homology and the CL1 degradation signal. We show that upon subretinal administration these vectors are both safe in pigs and effective in Abca4-/- mice. Our data support the use of improved dual AAV vectors for gene therapy of STGD1.
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Affiliation(s)
- Ivana Trapani
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli 80078, Italy
| | | | - Sonia de Simone
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli 80078, Italy
| | - Pasqualina Colella
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli 80078, Italy
| | - Carolina Iodice
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli 80078, Italy
| | - Elena V Polishchuk
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli 80078, Italy
| | - Andrea Sommella
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli 80078, Italy
| | - Linda Colecchi
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli 80078, Italy
| | - Settimio Rossi
- Eye Clinic, Multidisciplinary Department of Medical, Surgical and Dental Sciences, Second University of Naples, 80121, Naples, Italy
| | - Francesca Simonelli
- Eye Clinic, Multidisciplinary Department of Medical, Surgical and Dental Sciences, Second University of Naples, 80121, Naples, Italy
| | - Massimo Giunti
- Department of Veterinary Medical Sciences, University of Bologna, Bologna 40064, Italy and
| | - Maria L Bacci
- Department of Veterinary Medical Sciences, University of Bologna, Bologna 40064, Italy and
| | - Roman S Polishchuk
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli 80078, Italy
| | - Alberto Auricchio
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli 80078, Italy, Medical Genetics, Department of Translational Medicine, Federico II University, Naples 80131, Italy
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Yu C, Qian L, Uttamchandani M, Li L, Yao SQ. Single-Vehicular Delivery of Antagomir and Small Molecules to Inhibit miR-122 Function in Hepatocellular Carcinoma Cells by using "Smart" Mesoporous Silica Nanoparticles. Angew Chem Int Ed Engl 2015; 54:10574-8. [PMID: 26179591 DOI: 10.1002/anie.201504913] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Indexed: 12/19/2022]
Abstract
MicroRNAs (miRNAs) regulate a variety of biological processes. The liver-specific, highly abundant miR-122 is implicated in many human diseases including cancer. Its inhibition has been found to result in a dramatic loss in the ability of Hepatitis C virus (HCV) to infect host cells. Both antisense technology and small molecules have been used to independently inhibit endogenous miR-122 function, but not in combination. Intracellular stability, efficient delivery, hydrophobicity, and controlled release are some of the current challenges associated with these novel therapeutic methods. Reported herein is the first single-vehicular system, based on mesoporous silica nanoparticles (MSNs), for simultaneous cellular delivery of miR-122 antagomir and small molecule inhibitors. The controlled release of both types of inhibitors depends on the expression levels of endogenous miR-122, thus enabling these drug-loaded MSNs to achieve combination inhibition of its targeted mRNAs in Huh7 cells.
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Affiliation(s)
- Changmin Yu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543 (Singapore) http://staff.science.nus.edu.sg/∼syao
| | - Linghui Qian
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543 (Singapore) http://staff.science.nus.edu.sg/∼syao
| | - Mahesh Uttamchandani
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543 (Singapore) http://staff.science.nus.edu.sg/∼syao
| | - Lin Li
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543 (Singapore) http://staff.science.nus.edu.sg/∼syao
| | - Shao Q Yao
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543 (Singapore) http://staff.science.nus.edu.sg/∼syao.
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Yu C, Qian L, Uttamchandani M, Li L, Yao SQ. Single-Vehicular Delivery of Antagomir and Small Molecules to Inhibit miR-122 Function in Hepatocellular Carcinoma Cells by using “Smart” Mesoporous Silica Nanoparticles. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201504913] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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28
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Martinho C, Confraria A, Elias CA, Crozet P, Rubio-Somoza I, Weigel D, Baena-González E. Dissection of miRNA pathways using arabidopsis mesophyll protoplasts. MOLECULAR PLANT 2015; 8:261-75. [PMID: 25680775 DOI: 10.1016/j.molp.2014.10.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Revised: 09/10/2014] [Accepted: 10/10/2014] [Indexed: 05/03/2023]
Abstract
MicroRNAs (miRNAs) control gene expression mostly post-transcriptionally by guiding transcript cleavage and/or translational repression of complementary mRNA targets, thereby regulating developmental processes and stress responses. Despite the remarkable expansion of the field, the mechanisms underlying miRNA activity are not fully understood. In this article, we describe a transient expression system in Arabidopsis mesophyll protoplasts, which is highly amenable for the dissection of miRNA pathways. We show that by transiently overexpressing primary miRNAs and target mimics, we can manipulate miRNA levels and consequently impact on their targets. Furthermore, we developed a set of luciferase-based sensors for quantifying miRNA activity that respond specifically to both endogenous and overexpressed miRNAs and target mimics. We demonstrate that these miRNA sensors can be used to test the impact of putative components of the miRNA pathway on miRNA activity, as well as the impact of specific mutations, by either overexpression or the use of protoplasts from the corresponding mutants. We further show that our miRNA sensors can be used for investigating the effect of chemicals on miRNA activity. Our cell-based transient expression system is fast and easy to set up, and generates quantitative results, being a powerful tool for assaying miRNA activity in vivo.
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Affiliation(s)
- Cláudia Martinho
- Plant Stress Signaling, Instituto Gulbenkian de Ciência, Rua da Quinta Grande - 6, 2780-156 Oeiras, Portugal
| | - Ana Confraria
- Plant Stress Signaling, Instituto Gulbenkian de Ciência, Rua da Quinta Grande - 6, 2780-156 Oeiras, Portugal
| | - Carlos Alexandre Elias
- Plant Stress Signaling, Instituto Gulbenkian de Ciência, Rua da Quinta Grande - 6, 2780-156 Oeiras, Portugal
| | - Pierre Crozet
- Plant Stress Signaling, Instituto Gulbenkian de Ciência, Rua da Quinta Grande - 6, 2780-156 Oeiras, Portugal
| | - Ignacio Rubio-Somoza
- Department of Molecular Biology, Max Planck Institute for Developmental Biology, D-72076 Tübingen, Germany
| | - Detlef Weigel
- Department of Molecular Biology, Max Planck Institute for Developmental Biology, D-72076 Tübingen, Germany
| | - Elena Baena-González
- Plant Stress Signaling, Instituto Gulbenkian de Ciência, Rua da Quinta Grande - 6, 2780-156 Oeiras, Portugal.
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Mekky RY, El-Ekiaby NM, Hamza MT, Elemam NM, El-Sayed M, Esmat G, Abdelaziz AI. Mir-194 is a hepatocyte gate keeper hindering HCV entry through targeting CD81 receptor. J Infect 2014; 70:78-87. [PMID: 25218426 DOI: 10.1016/j.jinf.2014.08.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Revised: 08/28/2014] [Accepted: 08/31/2014] [Indexed: 02/07/2023]
Abstract
OBJECTIVE The tetraspanin CD81 is one of the main receptors involved in hepatitis C virus entry. Herein, we aimed to explore the role of microRNAs in regulating CD81 receptor expression and function. PATIENTS AND METHODS Bioinformatics analysis was carried out to select potential mircroRNAs that binds CD81 3'untranslated region. Liver biopsies taken from 28 HCV genotype- 4 patients and 10 healthy donors were screened. Naïve, JFH1 and ED43/JFH1- infected- Huh7 cells were transfected with mimics and inhibitors followed by analyzing CD81 protein and mRNA expression. This was done using flow cytometry and Q-RT PCR, respectively. HCV entry into Huh7 cells was investigated post-transfection. Binding confirmation was done using luciferase reporter vector harboring wild/mutant target sites of microRNA. The impact of Epigallocatechin-gallate on modulating microRNA/CD81 expression was assessed. RESULTS Bioinformatics revealed that CD81 is a potential down-stream target for miR-194. A significant inverse correlation was found between miR-194 and CD81 expression in liver biopsies of HCV patients. Forcing the expression of miR-194 showed a down-regulation of CD81 protein, mRNA expression and significantly abrogated the HCV infectivity of Huh7 cells. Stimulation with EGCG enhanced mir-194 expression and down-regulated CD81 expression. CONCLUSION This study showed that mir-194 hinders HCV entry through targeting CD81 receptors.
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Affiliation(s)
- Radwa Yehia Mekky
- The Molecular Pathology Research Group, Department of Pharmacology and Toxicology, German University in Cairo, New Cairo City, Main Entrance Al Tagamoa Al Khames, 11835, Cairo, Egypt
| | - Nada Magdy El-Ekiaby
- The Molecular Pathology Research Group, Department of Pharmacology and Toxicology, German University in Cairo, New Cairo City, Main Entrance Al Tagamoa Al Khames, 11835, Cairo, Egypt
| | - Mohammed Tarif Hamza
- Department of Clinical Pathology, Ain Shams University, Khalifa El-Maamon St, Abbasiya square, 11566, Cairo, Egypt
| | - Noha Mousaad Elemam
- The Molecular Pathology Research Group, Department of Pharmacology and Toxicology, German University in Cairo, New Cairo City, Main Entrance Al Tagamoa Al Khames, 11835, Cairo, Egypt
| | - Mohammed El-Sayed
- Department of Tropical Medicine and Hepatology, Cairo University Kasr El-Aini St, Cairo, Egypt
| | - Gamal Esmat
- Department of Tropical Medicine and Hepatology, Cairo University Kasr El-Aini St, Cairo, Egypt
| | - Ahmed Ihab Abdelaziz
- The Molecular Pathology Research Group, Department of Pharmacology and Toxicology, German University in Cairo, New Cairo City, Main Entrance Al Tagamoa Al Khames, 11835, Cairo, Egypt.
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30
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Chen X, Chen J, Liu X, Guo Z, Sun X, Zhang J. The real-time dynamic monitoring of microRNA function in cholangiocarcinoma. PLoS One 2014; 9:e99431. [PMID: 24918778 PMCID: PMC4053425 DOI: 10.1371/journal.pone.0099431] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Accepted: 05/11/2014] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Although many studies have confirmed a relationship between microRNAs (miRNAs) and cholangiocarcinoma (CCA), the real-time dynamics of miRNA function have not been examined. METHODS miRNA reporter constructs were generated using a recombinant adeno-associated virus vector, which contained complementary sequences for six miRNAs (miR-200a, miR-200b, miR-21, miR-146a, miR-155, and miR-221), along with two independent expression cassettes encoding the fluorescent reporter genes Fluc and Gluc. The spatio-temporal function of each miRNA was monitored both in CCA and control tissues. RESULTS All miRNAs participated in CCA development, with distinct patterns of expression over time. The activity of miR-21 was significantly lower in female T3N0M0 CCA tissue relative to controls at three time points, yet was higher in two male T3N1M0 CCA tissues. The difference in miR-200b function between two male T3N1M0 CCA tissues and their corresponding controls peaked at 24 h, while function in a female T3N0M0 CCA was detected only at 72 h. The four remaining miRNAs (miR-200a, miR146a, miR-155, and miR-221) displayed patient-specific activity patterns in both CCA and control tissues. CONCLUSION Significant variability was observed in the temporal function of all six miRNAs, which may play an important role in the development of CCA.
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Affiliation(s)
- Xue Chen
- Department of Gastroenterology, Beijing An Zhen Hospital, Capital Medical University, Beijing, China
| | - Jing Chen
- Department of Gastroenterology, Beijing Tong Ren Hospital, Capital Medical University, Beijing, China
| | - Xinjuan Liu
- Department of Gastroenterology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Zihao Guo
- Department of Gastroenterology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Xiaoxin Sun
- Department of Gastroenterology, Beijing An Zhen Hospital, Capital Medical University, Beijing, China
| | - Jie Zhang
- Department of Gastroenterology, Beijing An Zhen Hospital, Capital Medical University, Beijing, China
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31
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Cui J, Cheng Y, Zhang P, Sun M, Gao F, Liu C, Cai J. Down Regulation of miR200c Promotes Radiation-Induced Thymic Lymphoma by Targeting BMI1. J Cell Biochem 2014; 115:1033-42. [DOI: 10.1002/jcb.24754] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2013] [Accepted: 12/17/2013] [Indexed: 12/19/2022]
Affiliation(s)
- Jianguo Cui
- Department of Radiation Medicine; Second Military Medical University; Xiangyin Road Shanghai 200433 PR China
| | - Ying Cheng
- Department of Radiation Medicine; Second Military Medical University; Xiangyin Road Shanghai 200433 PR China
| | - Pei Zhang
- Department of Radiation Medicine; Second Military Medical University; Xiangyin Road Shanghai 200433 PR China
| | - Mingjuan Sun
- Department of Biochemistry and Molecular Biology; Second Military Medical University; Xiangyin Road Shanghai 200433 PR China
| | - Fu Gao
- Department of Radiation Medicine; Second Military Medical University; Xiangyin Road Shanghai 200433 PR China
| | - Cong Liu
- Department of Radiation Medicine; Second Military Medical University; Xiangyin Road Shanghai 200433 PR China
| | - Jianming Cai
- Department of Radiation Medicine; Second Military Medical University; Xiangyin Road Shanghai 200433 PR China
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32
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Jamali AA, Pourhassan-Moghaddam M, Dolatabadi JEN, Omidi Y. Nanomaterials on the road to microRNA detection with optical and electrochemical nanobiosensors. Trends Analyt Chem 2014. [DOI: 10.1016/j.trac.2013.10.008] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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33
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MiRNA-199a-3p regulates C2C12 myoblast differentiation through IGF-1/AKT/mTOR signal pathway. Int J Mol Sci 2013; 15:296-308. [PMID: 24378853 PMCID: PMC3907811 DOI: 10.3390/ijms15010296] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Revised: 12/10/2013] [Accepted: 12/11/2013] [Indexed: 11/17/2022] Open
Abstract
MicroRNAs constitute a class of ~22-nucleotide non-coding RNAs. They modulate gene expression by associating with the 3' untranslated regions (3' UTRs) of messenger RNAs (mRNAs). Although multiple miRNAs are known to be regulated during myoblast differentiation, their individual roles in muscle development are still not fully understood. In this study, we showed that miR-199a-3p was highly expressed in skeletal muscle and was induced during C2C12 myoblasts differentiation. We also identified and confirmed several genes of the IGF-1/AKT/mTOR signal pathway, including IGF-1, mTOR, and RPS6KA6, as important cellular targets of miR-199a-3p in myoblasts. Overexpression of miR-199a-3p partially blocked C2C12 myoblast differentiation and the activation of AKT/mTOR signal pathway, while interference of miR-199a-3p by antisense oligonucleotides promoted C2C12 differentiation and myotube hypertrophy. Thus, our studies have established miR-199a-3p as a potential regulator of myogenesis through the suppression of IGF-1/AKT/mTOR signal pathway.
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34
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Tiago DM, Marques CL, Roberto VP, Cancela ML, Laizé V. Mir-20a regulates in vitro mineralization and BMP signaling pathway by targeting BMP-2 transcript in fish. Arch Biochem Biophys 2013; 543:23-30. [PMID: 24361749 DOI: 10.1016/j.abb.2013.12.009] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Revised: 12/02/2013] [Accepted: 12/12/2013] [Indexed: 12/29/2022]
Abstract
MicroRNAs (miRNAs) are important regulators of vertebrate development but their role during skeletogenesis remains unknown. In this regard, we investigated the mineralogenic activity of miR-20a, a miRNA associated with osteogenesis, in fish bone-derived cells. Expression of miR-20a was up-regulated during differentiation and its overexpression inhibited mineralization, suggesting a role in fish tissue calcification. In this regard, a conserved miR-20a binding site was identified in bone morphogenetic protein 2 (BMP-2) 3'UTR and its functionality was evidenced through luciferase assays, and further confirmed by western-blot and qPCR. Type II BMP receptor (BMPR2) is also targeted by miR-20a in mammalian systems and evidence was collected for the presence of a binding site in fish sequences. We propose that miR-20a is a regulator of BMP pathway through specific action on BMP-2 and possibly BMPR2. Overexpression of miR-20a was also shown to up-regulate matrix Gla protein (MGP) transcript, a physiological inhibitor of calcification previously found to form a complex with BMP-2. We propose that MGP may play a role in the anti-mineralogenic effect promoted by miR-20a by decreasing availability of BMP-2. This study gives new insights into miRNA-mediated regulation of BMP-2, and sheds light into the potential role of miR-20a as a regulator of skeletogenesis.
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Affiliation(s)
- Daniel M Tiago
- Centre of Marine Sciences (CCMAR/CIMAR-LA), University of Algarve, Faro, Portugal.
| | - Cátia L Marques
- Centre of Marine Sciences (CCMAR/CIMAR-LA), University of Algarve, Faro, Portugal; PhD Program in Biomedical Sciences, University of Algarve, Faro, Portugal
| | - Vânia P Roberto
- Centre of Marine Sciences (CCMAR/CIMAR-LA), University of Algarve, Faro, Portugal; PhD Program in Biomedical Sciences, University of Algarve, Faro, Portugal
| | - M Leonor Cancela
- Centre of Marine Sciences (CCMAR/CIMAR-LA), University of Algarve, Faro, Portugal; Department of Biomedical Sciences and Medicine, University of Algarve, Faro, Portugal
| | - Vincent Laizé
- Centre of Marine Sciences (CCMAR/CIMAR-LA), University of Algarve, Faro, Portugal
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Hemphill J, Deiters A. DNA Computation in Mammalian Cells: MicroRNA Logic Operations. J Am Chem Soc 2013; 135:10512-8. [DOI: 10.1021/ja404350s] [Citation(s) in RCA: 172] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- James Hemphill
- Department
of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, United
States
| | - Alexander Deiters
- Department
of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, United
States
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36
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Chen J, Liu X, Chen X, Guo Z, Liu J, Hao J, Zhang J. Real-time monitoring of miRNA function in pancreatic cell lines using recombinant AAV-based miRNA Asensors. PLoS One 2013; 8:e66315. [PMID: 23776656 PMCID: PMC3679063 DOI: 10.1371/journal.pone.0066315] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Accepted: 05/04/2013] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND MicroRNAs (miRNAs) are reportedly involved in pancreatic ductal adenocarcinoma (PDAC) development. Current methods do not allow us to reliably monitor miRNA function. Asensors are adeno-associated virus (AAV) vector miRNA sensors for real-time consecutive functional monitoring of miRNA profiling in living cells. METHODS miR-200a, -200b, -21, -96, -146a, -10a, -155, and -221 in three PDAC cell lines (BxPC-3, CFPAC-1, SW1990), pancreatic epithelioid carcinoma cells (PANC-1), and human pancreatic nestin-expressing cells (hTERT-HPNE) were monitored by Asensors. Subsequently, the real-time consecutive functional profile of all miRNAs was evaluated. RESULTS Selected miRNAs were detectable in all cell lines with high sensitivity and reproducibility. In the three PDAC cell lines, BxPC-3, CFPAC-1, and SW1990, the calibrated signal unit of the eight miRNAs Asensors was significantly lower than that of the Asensor control. However, in PANC-1 cells, miR-200a and -155 showed upregulation of target gene expression at 24 hours after infection with the sensors; at 48 hours, miR-200b and -155 displayed upregulation of reporter expression; and at 72 hours, reporter gene expression was upregulated by miR-200a and -200b. The result that miRNA could upregulate gene expression was further confirmed in miR-155 of hTERT-HPNE cells. Furthermore, miRNA activity varied among cell/tissue types and time. CONCLUSION It is possible that miRNA participates in the pathophysiology of pancreatic cancer, but the current popular methods do not accurately reveal the real-time miRNA function. Thus, this report provided a convenient, accurate, and sensitive approach to miRNA research.
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Affiliation(s)
- Jing Chen
- Department of Gastroenterology, Beijing Chaoyang Hospital, Capital Medical University, Chaoyang District, Beijing, China
| | - Xinjuan Liu
- Department of Gastroenterology, Beijing Chaoyang Hospital, Capital Medical University, Chaoyang District, Beijing, China
| | - Xue Chen
- Department of Gastroenterology, Beijing Chaoyang Hospital, Capital Medical University, Chaoyang District, Beijing, China
| | - Zihao Guo
- Department of Gastroenterology, Beijing Chaoyang Hospital, Capital Medical University, Chaoyang District, Beijing, China
| | - Juan Liu
- Management of Hospital Infection, Zhengzhou Tenth People's Hospital, Zhengzhou, Henan, China
| | - Jianyu Hao
- Department of Gastroenterology, Beijing Chaoyang Hospital, Capital Medical University, Chaoyang District, Beijing, China
| | - Jie Zhang
- Department of Gastroenterology, Beijing Chaoyang Hospital, Capital Medical University, Chaoyang District, Beijing, China
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37
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van Rijn S, Nilsson J, Noske DP, Vandertop WP, Tannous BA, Würdinger T. Functional multiplex reporter assay using tagged Gaussia luciferase. Sci Rep 2013; 3:1046. [PMID: 23308339 PMCID: PMC3541509 DOI: 10.1038/srep01046] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Accepted: 12/03/2012] [Indexed: 12/02/2022] Open
Abstract
We have developed a multiplex reporter system to monitor multiple biological variables in real-time. The secreted Gaussia luciferase was fused to ten different epitope tags (Gluc(tag)), each expressed in different tumor cells. By immunobinding of the tags followed by Gluc(tag) detection, this system allowed the independent and real-time monitoring of mixed cell cultures in vitro and of mixed subcutaneous and intracranial tumor subpopulations in vivo.
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Affiliation(s)
- Sjoerd van Rijn
- Neuro-oncology Research Group, Department of Neurosurgery, Cancer Center Amsterdam, VU University Medical Center, Amsterdam, The Netherlands
| | - Jonas Nilsson
- Neuro-oncology Research Group, Department of Neurosurgery, Cancer Center Amsterdam, VU University Medical Center, Amsterdam, The Netherlands
- Department of Radiation Sciences, Oncology, Umeå University, Umeå, Sweden
| | - David P. Noske
- Neuro-oncology Research Group, Department of Neurosurgery, Cancer Center Amsterdam, VU University Medical Center, Amsterdam, The Netherlands
| | - W. Peter Vandertop
- Neuro-oncology Research Group, Department of Neurosurgery, Cancer Center Amsterdam, VU University Medical Center, Amsterdam, The Netherlands
| | - Bakhos A. Tannous
- Neuroscience Center, Department of Neurology, Massachusetts General Hospital and Neuroscience Program, Harvard Medical School, Boston, MA, USA
| | - Thomas Würdinger
- Neuro-oncology Research Group, Department of Neurosurgery, Cancer Center Amsterdam, VU University Medical Center, Amsterdam, The Netherlands
- Neuroscience Center, Department of Neurology, Massachusetts General Hospital and Neuroscience Program, Harvard Medical School, Boston, MA, USA
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38
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Tian W, Dong X, Wu X, Wu Z. High-throughput functional microRNA profiling using recombinant AAV-based microRNA sensor arrays. Methods Mol Biol 2013; 1039:261-77. [PMID: 24026702 PMCID: PMC5012187 DOI: 10.1007/978-1-62703-535-4_21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
There is a lack of methods for high-throughput functional microRNA (miRNA) profiling. In this chapter, we describe a recombinant adeno-associated virus-based miRNA sensor array (miRNA Asensor array), which is able to profile functional miRNAs in cultured cells. The preparation of an miRNA Asensor array and its usage are discussed.
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Affiliation(s)
- Wenhong Tian
- College of Life Science, Jilin University, Changchun, Jilin, China
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39
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Attenuation of Semliki Forest virus neurovirulence by microRNA-mediated detargeting. J Virol 2012; 87:335-44. [PMID: 23077310 DOI: 10.1128/jvi.01940-12] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Artificial target sequences for tissue-specific miRNAs have recently been introduced as a new means for altering the tissue tropism of viral replication. This approach can be used to improve the safety of oncolytic viruses for cancer virotherapy by restricting their replication in unwanted tissues, such as the liver. Semliki Forest virus (SFV) is a positive-strand RNA virus and, similar to the related alphaviruses, like Sindbis virus, has potential as a gene therapy vector and an oncolytic virotherapy agent, but this potential is limited by the neurovirulence of these alphaviruses. Here, we have generated a replicative SFV4 carrying six tandem targets for the neuron-specific miR124 between the viral nonstructural protein 3 and 4 (nsp3 and nsp4) genes. When administered intraperitoneally into adult BALB/c mice, SFV4-miRT124 displayed an attenuated spread into the central nervous system (CNS) and greatly increased survival. Peripheral replication was not affected, indicating neuron-specific attenuation. Moreover, a strong protective SFV immunity was elicited in these animals. Intracranial infection of adult mice with SFV4-miRT124 showed greatly reduced infection of neurons in the brain but led to the infection of oligodendrocytes in the corpus callosum. Taken together, our data show that miR124-mediated attenuation of neurovirulence is a feasible and promising strategy for generating safer oncolytic alphavirus virotherapy agents.
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