1
|
Wang F, Ji YT, Tian C, Wang YC, Xu S, Wang RY, Yang QQ, Zhao P, Xia QY. An inducible constitutive expression system in Bombyx mori mediated by phiC31 integrase. INSECT SCIENCE 2021; 28:1277-1289. [PMID: 32803790 DOI: 10.1111/1744-7917.12866] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 08/05/2020] [Accepted: 08/07/2020] [Indexed: 06/11/2023]
Abstract
Inducible gene-expression systems play important roles in gene functional assays in the post-genome era. Streptomyces phage-derived phiC31 integrase, which mediates an irreversible site-specific cassette exchange between the phage attachment site (attP) and the bacterial attachment site (attB), provides a promising option for the construction of a controllable gene-expression system. Here, we report a phiC31 integrase-mediated promoter flip system (FLIP) for the inducible expression of target genes in silkworm (Bombyx mori). First, we constructed a FLIP reporter system, in which a BmAct4 promoter with enhanced translational efficiency was flanked by the attB and attP sites in a head-to-head orientation and further linked in a reverse orientation to a DsRed reporter gene. The coexpression of a C-terminal modified phiC31-NLS integrase carrying a simian virus 40 (SV40) nuclear localization signal (NLS) effectively flipped the BmAct4 promoter through an attB/attP exchange, thereby activating the downstream expression of DsRed in a silkworm embryo-derived cell line, BmE. Subsequently, the FLIP system, together with a system continuously expressing the phiC31-NLS integrase, was used to construct binary transgenic silkworm lines. Hybridization between FLIP and phiC31-NLS transgenic silkworm lines resulted in the successful flipping of the BmAct4 promoter, with an approximately 39% heritable transformation efficiency in silkworm offspring, leading to the constitutive and high-level expression of DsRed in silkworms, which accounted for approximately 0.81% of the silkworm pupal weight. Our successful development of the FLIP system offers an effective alternative for manipulating gene expression in silkworms and other lepidopteran species.
Collapse
Affiliation(s)
- Feng Wang
- State Key Laboratory of Silkworm Genome Biology, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Biological Science Research Center, Southwest University, Chongqing, China
| | - Yan-Ting Ji
- State Key Laboratory of Silkworm Genome Biology, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Biological Science Research Center, Southwest University, Chongqing, China
| | - Chi Tian
- State Key Laboratory of Silkworm Genome Biology, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Biological Science Research Center, Southwest University, Chongqing, China
| | - Yuan-Cheng Wang
- State Key Laboratory of Silkworm Genome Biology, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Biological Science Research Center, Southwest University, Chongqing, China
| | - Shen Xu
- State Key Laboratory of Silkworm Genome Biology, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Biological Science Research Center, Southwest University, Chongqing, China
| | - Ri-Yuan Wang
- State Key Laboratory of Silkworm Genome Biology, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Biological Science Research Center, Southwest University, Chongqing, China
| | - Qian-Qian Yang
- State Key Laboratory of Silkworm Genome Biology, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Biological Science Research Center, Southwest University, Chongqing, China
| | - Ping Zhao
- State Key Laboratory of Silkworm Genome Biology, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Biological Science Research Center, Southwest University, Chongqing, China
| | - Qing-You Xia
- State Key Laboratory of Silkworm Genome Biology, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Biological Science Research Center, Southwest University, Chongqing, China
| |
Collapse
|
2
|
Long D, Lu W, Hao Z, Xiang Z, Zhao A. Highly efficient and inducible DNA excision in transgenic silkworms using the FLP/FRT site-specific recombination system. Transgenic Res 2016; 25:795-811. [DOI: 10.1007/s11248-016-9970-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2016] [Accepted: 06/16/2016] [Indexed: 12/11/2022]
|
3
|
Bosch P, Forcato DO, Alustiza FE, Alessio AP, Fili AE, Olmos Nicotra MF, Liaudat AC, Rodríguez N, Talluri TR, Kues WA. Exogenous enzymes upgrade transgenesis and genetic engineering of farm animals. Cell Mol Life Sci 2015; 72:1907-29. [PMID: 25636347 PMCID: PMC11114025 DOI: 10.1007/s00018-015-1842-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 01/15/2015] [Accepted: 01/16/2015] [Indexed: 01/14/2023]
Abstract
Transgenic farm animals are attractive alternative mammalian models to rodents for the study of developmental, genetic, reproductive and disease-related biological questions, as well for the production of recombinant proteins, or the assessment of xenotransplants for human patients. Until recently, the ability to generate transgenic farm animals relied on methods of passive transgenesis. In recent years, significant improvements have been made to introduce and apply active techniques of transgenesis and genetic engineering in these species. These new approaches dramatically enhance the ease and speed with which livestock species can be genetically modified, and allow to performing precise genetic modifications. This paper provides a synopsis of enzyme-mediated genetic engineering in livestock species covering the early attempts employing naturally occurring DNA-modifying proteins to recent approaches working with tailored enzymatic systems.
Collapse
Affiliation(s)
- Pablo Bosch
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Fco-Qcas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba Republic of Argentina
| | - Diego O. Forcato
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Fco-Qcas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba Republic of Argentina
| | - Fabrisio E. Alustiza
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Fco-Qcas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba Republic of Argentina
| | - Ana P. Alessio
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Fco-Qcas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba Republic of Argentina
| | - Alejandro E. Fili
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Fco-Qcas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba Republic of Argentina
| | - María F. Olmos Nicotra
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Fco-Qcas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba Republic of Argentina
| | - Ana C. Liaudat
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Fco-Qcas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba Republic of Argentina
| | - Nancy Rodríguez
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Fco-Qcas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba Republic of Argentina
| | - Thirumala R. Talluri
- Friedrich-Loeffler-Institute, Institute of Farm Animal Genetics, Biotechnology, 31535 Neustadt, Germany
| | - Wilfried A. Kues
- Friedrich-Loeffler-Institute, Institute of Farm Animal Genetics, Biotechnology, 31535 Neustadt, Germany
| |
Collapse
|