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Hu X, Gao S, Wang P, Zhou Y, Chen K, Chen Q, Wang B, Hu W, Cheng P, Eid R, Giraud-Panis MJ, Wang L, Gilson E, Ye J, Lu Y. The knockdown efficiency of telomere associated genes with specific methodology in a zebrafish cell line. Biochimie 2021; 190:12-19. [PMID: 34214617 DOI: 10.1016/j.biochi.2021.06.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 06/12/2021] [Accepted: 06/24/2021] [Indexed: 11/16/2022]
Abstract
Zebrafish is broadly used as a model organism in gene loss-of-function studies in vivo, but its employment in vitro is greatly limited by the lack of efficient gene knockdown approaches in zebrafish cell lines such as ZF4. In this article, we attempted to induce silencing of telomere associated genes in ZF4 by applying the frequently-used siRNA transfection technology and a novel moiety-linked morpholino (vivo-MO). By proceeding with integrated optimization of siRNAs transfection and vivo-MOs treatment, we compared five transfection reagents and vivo-MOs simultaneously to evaluate the efficiency of terfa silencing in ZF4. 48 h after siRNAs transfection, Lipofectamine™ 3000 and X-tremeGENE™ HP leaded to knockdown in 35% and 43% of terfa transcription, respectively, while vivo-MO-terfa modulated 58% down-expression of zfTRF2 in contrast to vivo-MO-ctrl 72 h after treatment. Further siRNAs transfection targeting telomere associated genes by X-tremeGENE™ HP showed silencing in 40-68% of these genes without significant cytotoxicity and off-target effect. Our results confirmed the feasibility of gene loss-of-function studies in a zebrafish cell line, offered a systematic optimizing strategy to employ gene silencing experiments, and presented Lipofectamine™ 3000, X-tremeGENE™ HP and vivo-morpholinos as candidate gene silencing approaches for zebrafish in vitro gene loss-of-function studies. Successfully knockdown of shelterin genes further opened a new field for telomeric study in zebrafish.
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Affiliation(s)
- Xuefei Hu
- Department of Geriatrics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, International Laboratory in Hematology and Cancer, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China; The State Key Laboratory of Medical Genomics, Pôle Sino-Français de Recherche en Sciences Du Vivant et Génomique, Shanghai, 200025, China; Department of Emergency, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Shuaiyun Gao
- Department of Geriatrics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, International Laboratory in Hematology and Cancer, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China; The State Key Laboratory of Medical Genomics, Pôle Sino-Français de Recherche en Sciences Du Vivant et Génomique, Shanghai, 200025, China; Department of Emergency, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Peng Wang
- Department of Geriatrics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, International Laboratory in Hematology and Cancer, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China; The State Key Laboratory of Medical Genomics, Pôle Sino-Français de Recherche en Sciences Du Vivant et Génomique, Shanghai, 200025, China; Department of Emergency, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Yulin Zhou
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Kehua Chen
- Department of Geriatrics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, International Laboratory in Hematology and Cancer, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China; The State Key Laboratory of Medical Genomics, Pôle Sino-Français de Recherche en Sciences Du Vivant et Génomique, Shanghai, 200025, China; Department of Emergency, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Qiaowen Chen
- Department of Geriatrics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, International Laboratory in Hematology and Cancer, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China; The State Key Laboratory of Medical Genomics, Pôle Sino-Français de Recherche en Sciences Du Vivant et Génomique, Shanghai, 200025, China; Department of Emergency, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Bo Wang
- Department of Geriatrics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, International Laboratory in Hematology and Cancer, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China; The State Key Laboratory of Medical Genomics, Pôle Sino-Français de Recherche en Sciences Du Vivant et Génomique, Shanghai, 200025, China; Department of Emergency, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Weiguo Hu
- Department of Geriatrics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, International Laboratory in Hematology and Cancer, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Peng Cheng
- Department of Geriatrics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, International Laboratory in Hematology and Cancer, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China; The State Key Laboratory of Medical Genomics, Pôle Sino-Français de Recherche en Sciences Du Vivant et Génomique, Shanghai, 200025, China; Department of Emergency, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Rita Eid
- University Côte D'Azur, CHU, IRCAN, Faculty of Medicine, 28 Avenue de Valombrose, 06107, Nice Cedex 2, France
| | - Marie-Josèph Giraud-Panis
- University Côte D'Azur, CHU, IRCAN, Faculty of Medicine, 28 Avenue de Valombrose, 06107, Nice Cedex 2, France
| | - Lei Wang
- Department of Geriatrics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, International Laboratory in Hematology and Cancer, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Eric Gilson
- Department of Geriatrics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, International Laboratory in Hematology and Cancer, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China; University Côte D'Azur, CHU, IRCAN, Faculty of Medicine, 28 Avenue de Valombrose, 06107, Nice Cedex 2, France
| | - Jing Ye
- Department of Geriatrics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, International Laboratory in Hematology and Cancer, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China; The State Key Laboratory of Medical Genomics, Pôle Sino-Français de Recherche en Sciences Du Vivant et Génomique, Shanghai, 200025, China; Department of Emergency, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
| | - Yiming Lu
- Department of Geriatrics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, International Laboratory in Hematology and Cancer, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China; The State Key Laboratory of Medical Genomics, Pôle Sino-Français de Recherche en Sciences Du Vivant et Génomique, Shanghai, 200025, China; Department of Emergency, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
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Ding C, Wang X, Ma J, Xie M, Dong Q, Liu Q. Exploration of the bacterial invasion capacity of Listeria monocytogenes in ZF4 cells. Microb Pathog 2018; 124:238-243. [PMID: 30145253 DOI: 10.1016/j.micpath.2018.08.045] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 08/15/2018] [Accepted: 08/23/2018] [Indexed: 11/19/2022]
Abstract
Despite the results from zebrafish challenged model have demonstrated that Listeria monocytogenes (Lm) has strong adjuvant effects when this attenuated pathogenic bacteria is viewed as aquaculture vaccine vector, the underlying mechanism is not clear and extensive investigations are required. To further explore the potential of Lm in the field of aquaculture vaccine, zebrafish embryonic fibroblast cell line (ZF4) was used to evaluate the invasion ability of Lm. The data from cellular level showed that Lm had the lower invasion tendentiousness in ZF4 cells while bacterial invasion capacity was compared between zebrafish embryos cell line and human intestinal epithelial cell line. In ZF4 cells, there is no significant difference in bacterial invasion capacity between wild strain EGD-e and double-deleted strain ΔactA/inlB, which suggested that this attenuated effect was not showed in zebrafish cells. In addition, translation analysis indicated that the expressions of CD4 and CD8a in ZF4 cells increased after 2-h infection of the two Lm strains. These results further demonstrated that Lm presented multiple advantages including lower pathogenicity and antigen presentation when attenuated stain was viewed as aquaculture vaccine vector.
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Affiliation(s)
- Chengchao Ding
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, PR China
| | - Xiang Wang
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, PR China
| | - Junfei Ma
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, PR China
| | - Manman Xie
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, PR China
| | - Qingli Dong
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, PR China
| | - Qing Liu
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, PR China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, PR China.
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Abstract
Zebrafish (Danio rerio) has become an increasingly important model for in vivo and in vitro studies on host-pathogen interaction, offering scientists with optical accessibility and genetic tractability, and a vertebrate-type immunity that can be separated into innate and adaptive ones. Although it is shown in previous studies that few species of viruses can naturally infect zebrafish, the spring viraemia of carp virus (SVCV), a rhabdovirus that causes contagious acute hemorrhagic viraemia in a variety of cyprinid fishes, can infect zebrafish by both injection and static immersion methods in laboratory conditions. In addition, SVCV can infect zebrafish fibroblast cell line (ZF4 cells), together with the Epithelioma papulosum cyprini (EPC) cell line (EPC cells), a common cell line used widely in fish disease research. The infection and propagation of SVCV in zebrafish and especially in these cell lines can be employed conveniently in laboratory for functional assays of zebrafish genes. The zebrafish, ZF4 and EPC cell, and SVCV can serve as a simple and efficient model system in understanding host-virus interactions. In the present chapter, we provide detailed protocols for the host-virus interaction analysis based on zebrafish embryos, ZF4/EPC cells, and SVCV, including infection methods of zebrafish embryos and cell lines, analyses of immune responses by quantitative PCR (qPCR) and RNA sequencing (RNA-Seq), antiviral assays based on ZF4 and EPC cells, and the analysis of host-virus interaction using luciferase assays. These protocols should provide efficient and typical means to address host-virus interactions in a more general biological sense.
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Affiliation(s)
- Peng Fei Zou
- College of Fisheries, Jimei University, 43 Yindou Road, Xiamen, Fujian Province, 361021, China
| | - Pin Nie
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei Province, 430072, China.
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