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Liu Z, Yang F, Fang M, Wu Q, Fan K, Huang D, Ye Y, Wan G, Song D. Rapid and Sensitive One-Tube Detection of Getah Virus Using RT-LAMP Combined with Pyrococcus furiosus Argonaute. Vet Sci 2025; 12:93. [PMID: 40005853 PMCID: PMC11860293 DOI: 10.3390/vetsci12020093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2024] [Revised: 01/22/2025] [Accepted: 01/23/2025] [Indexed: 02/27/2025] Open
Abstract
Getah virus (GETV) is a mosquito-borne virus that poses a significant threat to both animal and public health. Traditional diagnostic methods for GETV, such as RT-PCR and RT-qPCR, require expensive equipment and complex procedures, making them unsuitable for rapid, on-site detection. The combination of RT-LAMP and PfAgo offers a novel approach for nucleic acid detection, providing high specificity and effective without the need for sophisticated instruments. Herein, we developed a RT-LAMP combined with PfAgo assay for GETV detection. The RT-LAMP assay was conducted at 60~65 °C, and then the RT-LAMP product was cleaved, together with a fluorescent probe, mediated by PfAgo at 95 °C. After optimizing the primary reaction conditions, the detection limit of the RT-LAMP-PfAgo assay was 100 copies/µL. Importantly, there was no cross-reactivity with other viruses, including PEDV, PDCoV, PoRV, PRRSV, and CSFV. Compared to qPCR, analysis of 86 clinical samples showed that LAMP-PfAgo had a consistent positive rate with the qPCR method. In conclusion, we developed a valuable diagnostic tool for the rapid detection of GETV, enabling timely surveillance and control measures to mitigate the impact of GETV outbreaks.
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Affiliation(s)
- Zhong Liu
- Department of Preventive Veterinary Medicine, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, China; (Z.L.); (F.Y.); (M.F.); (Q.W.); (K.F.); (D.H.); (Y.Y.); (G.W.)
| | - Fosheng Yang
- Department of Preventive Veterinary Medicine, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, China; (Z.L.); (F.Y.); (M.F.); (Q.W.); (K.F.); (D.H.); (Y.Y.); (G.W.)
| | - Mengtao Fang
- Department of Preventive Veterinary Medicine, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, China; (Z.L.); (F.Y.); (M.F.); (Q.W.); (K.F.); (D.H.); (Y.Y.); (G.W.)
| | - Qi Wu
- Department of Preventive Veterinary Medicine, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, China; (Z.L.); (F.Y.); (M.F.); (Q.W.); (K.F.); (D.H.); (Y.Y.); (G.W.)
| | - Ke Fan
- Department of Preventive Veterinary Medicine, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, China; (Z.L.); (F.Y.); (M.F.); (Q.W.); (K.F.); (D.H.); (Y.Y.); (G.W.)
| | - Dongyan Huang
- Department of Preventive Veterinary Medicine, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, China; (Z.L.); (F.Y.); (M.F.); (Q.W.); (K.F.); (D.H.); (Y.Y.); (G.W.)
- Jiangxi Engineering Research Center for Animal Health Products, Jiangxi Agricultural University, Nanchang 330045, China
| | - Yu Ye
- Department of Preventive Veterinary Medicine, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, China; (Z.L.); (F.Y.); (M.F.); (Q.W.); (K.F.); (D.H.); (Y.Y.); (G.W.)
- Jiangxi Engineering Research Center for Animal Health Products, Jiangxi Agricultural University, Nanchang 330045, China
| | - Gen Wan
- Department of Preventive Veterinary Medicine, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, China; (Z.L.); (F.Y.); (M.F.); (Q.W.); (K.F.); (D.H.); (Y.Y.); (G.W.)
- Jiangxi Engineering Research Center for Animal Health Products, Jiangxi Agricultural University, Nanchang 330045, China
| | - Deping Song
- Department of Preventive Veterinary Medicine, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, China; (Z.L.); (F.Y.); (M.F.); (Q.W.); (K.F.); (D.H.); (Y.Y.); (G.W.)
- Jiangxi Engineering Research Center for Animal Health Products, Jiangxi Agricultural University, Nanchang 330045, China
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Sun Z, Wang M, Wang W, Li D, Wang J, Sui G. Getah virus capsid protein undergoes co-condensation with viral genomic RNA to facilitate virion assembly. Int J Biol Macromol 2024; 265:130847. [PMID: 38490381 DOI: 10.1016/j.ijbiomac.2024.130847] [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: 01/21/2024] [Revised: 03/10/2024] [Accepted: 03/11/2024] [Indexed: 03/17/2024]
Abstract
Getah virus (GETV) belongs to the Alphavirus genus in the Togaviridae family and is a zoonotic arbovirus causing disease in both humans and animals. The capsid protein (CP) of GETV regulates the viral core assembly, but the mechanism underlying this process is poorly understood. In this study, we demonstrate that CP undergoes liquid-liquid phase separation (LLPS) with the GETV genome RNA (gRNA) in vitro and forms cytoplasmic puncta in cells. Two regions of GETV gRNA (nucleotides 1-4000 and 5000-8000) enhance CP droplet formation in vitro and the lysine-rich Link region of CP is essential for its phase separation. CP(K/R) mutant with all lysines in the Link region replaced by arginines exhibits improved LLPS versus wild type (WT) CP, but CP(K/E) mutant with lysines substituted by glutamic acids virtually loses condensation ability. Consistently, recombinant virus mutant with CP(K/R) possesses significantly higher gRNA binding affinity, virion assembly efficiency and infectivity than the virus with WT-CP. Overall, our findings provide new insights into the understanding of GETV assembly and development of new antiviral drugs against alphaviruses.
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Affiliation(s)
- Zhenzhao Sun
- College of Life Science, Northeast Forestry University, Harbin 150040, People's Republic of China
| | - Ming Wang
- State Key Laboratory for Animal Disease Control and Prevention & National Data Center for Animal Infectious Diseases, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, People's Republic of China
| | - Wenmeng Wang
- College of Life Science, Northeast Forestry University, Harbin 150040, People's Republic of China
| | - Dangdang Li
- College of Life Science, Northeast Forestry University, Harbin 150040, People's Republic of China
| | - Jingfei Wang
- State Key Laboratory for Animal Disease Control and Prevention & National Data Center for Animal Infectious Diseases, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, People's Republic of China.
| | - Guangchao Sui
- College of Life Science, Northeast Forestry University, Harbin 150040, People's Republic of China.
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