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Abo-Al-Ela HG. RNA Interference in Aquaculture: A Small Tool for Big Potential. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:4343-4355. [PMID: 33835783 DOI: 10.1021/acs.jafc.1c00268] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
For decades, the tight regulatory functions of DNA and RNA have been the focus of extensive research with the goal of harnessing RNA molecules (e.g., microRNA and small interfering RNA) to control gene expression and to study biological functions. RNA interference (RNAi) has shown evidence of mediating gene expression, has been utilized to study functional genomics, and recently has potential in therapeutic agents. RNAi is a natural mechanism and a well-studied tool that can be used to silence specific genes. This method is also used in aquaculture as a research tool and to enhance immune responses. RNAi methods do have their limitations (e.g., immune triggering); efficient and easy-to-use RNAi methods for large-scale applications need further development. Despite these limitations, RNAi methods have been successfully used in aquaculture, in particular shrimp. This review discusses the uses of RNAi in aquaculture, such as immune- and production-related issues and the possible limitations that may hinder the application of RNAi in the aquaculture industry. Our challenge is to develop a highly potent in vivo RNAi delivery platform that could complete the desired action with minimal side effects and which can be applied on a large-scale with relatively little expense in the aquaculture industry.
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Affiliation(s)
- Haitham G Abo-Al-Ela
- Genetics and Biotechnology, Department of Aquaculture, Faculty of Fish Resources, Suez University, Suez 43518, Egypt
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Jiang P, Fang X, Zhao Z, Yu X, Sun B, Yu H, Yang R. The effect of short/branched chain acyl-coenzyme A dehydrogenase gene on triglyceride synthesis of bovine mammary epithelial cells. Arch Anim Breed 2018. [DOI: 10.5194/aab-61-115-2018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Abstract. Short/branched chain acyl-CoA dehydrogenase (ACADSB) is a member of
the acyl-CoA dehydrogenase family of enzymes that catalyze the
dehydrogenation of acyl-CoA derivatives in the metabolism of fatty
acids. Our previous transcriptome analysis in dairy cattle showed
that ACADSB was differentially expressed and was associated with milk
fat metabolism. The aim of this study was to elucidate the
background of this differential expression and to evaluate the role
of ACADSB as a candidate for fat metabolism in dairy cattle. After
analysis of ACADSB mRNA abundance by qRT-PCR and Western blot,
overexpression and RNA interference (RNAi) vectors of ACADSB gene
were constructed and then transfected into bovine mammary
epithelial cells (bMECs) to examine the effects of ACADSB on
milk fat synthesis. The results showed that the ACADSB was
differentially expressed in mammary tissue of low and high milk fat
dairy cattle. Overexpression of ACADSB gene could significantly
increase the level of intracellular triglyceride (TG), while ACADSB
gene knockdown could significantly reduce the TG synthesis
in bMECs. This study suggested that the ACADSB was important in
TG synthesis in bMECs, and it could be a candidate gene
to regulate the metabolism of milk fat in dairy cattle.
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Wu X, Li K, Xie M, Yu M, Tang S, Li Z, Hu S. Construction and protective immunogenicity of DNA vaccine pNMB0315 against Neisseria meningitidis serogroup B. Mol Med Rep 2017; 17:3178-3185. [PMID: 29257302 DOI: 10.3892/mmr.2017.8255] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2017] [Accepted: 10/18/2017] [Indexed: 11/05/2022] Open
Abstract
Neisseria meningitidis (N. meningitidis) is a major cause of meningitis and sepsis. Capsular polysaccharide‑based vaccines against serogroups A, C, Y, and W135 are available; however, the development of a vaccine against N. meningitidis serogroup B (NMB) has been problematic. NMB0315 is an outer membrane protein of NMB that may be a virulence factor for N. meningitidis and a possible target for functional bactericidal antibodies. The present study aimed to develop a potent DNA vaccine against NMB by cloning the NMB0135 gene into the pcDNA3.1(+) vector to construct the recombinant plasmid pcDNA3.1(+)/NMB0315 (designated pNMB0315). pNMB0315 was transfected into eukaryotic COS‑7 and RAW264.7 cells to express the recombinant (r)NMB0315 protein. Protective immunogenicity of the DNA vaccine was assessed in an in vivo mouse model. The levels of rNMB0315‑specific immunoglobulin G (IgG), IgG1 and IgG2a antibodies in the pNMB0315‑immunized group increased dramatically up to week 6 following the initial vaccination, and were significantly higher compared with the levels in the Control groups. The serum concentrations of interleukin‑4 and interferon‑γ were significantly higher in the pNMB0315‑immunized group compared with the control groups. Following intraperitoneal challenge with a lethal dose of NMB strain MC58, the survival rate in the pNMB0315 + CpG group was 70% (14 out of 20 mice) at 14 days; by contrast, all mice in the control groups succumbed within 3 days. The serum bactericidal titers of the pNMB0315 + CpG group in vitro reached 1:128 following three immunizations. The results indicated that pNMB0315 may serve as a promising DNA vaccine against NMB.
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Affiliation(s)
- Xiaoxia Wu
- Laboratory of Anti‑infectious Immunity, Pathogenic Biology Institute, College of Basic Medicine, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Kaiming Li
- Laboratory of Anti‑infectious Immunity, Pathogenic Biology Institute, College of Basic Medicine, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Meihua Xie
- Laboratory of Anti‑infectious Immunity, Pathogenic Biology Institute, College of Basic Medicine, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Minjun Yu
- Laboratory of Anti‑infectious Immunity, Pathogenic Biology Institute, College of Basic Medicine, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Shuangyang Tang
- Laboratory of Anti‑infectious Immunity, Pathogenic Biology Institute, College of Basic Medicine, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Zhenyu Li
- Laboratory of Anti‑infectious Immunity, Pathogenic Biology Institute, College of Basic Medicine, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Sihai Hu
- Laboratory of Anti‑infectious Immunity, Pathogenic Biology Institute, College of Basic Medicine, University of South China, Hengyang, Hunan 421001, P.R. China
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