1
|
Mills JT, Minogue SC, Snowden JS, Arden WKC, Rowlands DJ, Stonehouse NJ, Wobus CE, Herod MR. Amino acid substitutions in norovirus VP1 dictate host dissemination via variations in cellular attachment. J Virol 2023; 97:e0171923. [PMID: 38032199 PMCID: PMC10734460 DOI: 10.1128/jvi.01719-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 11/03/2023] [Indexed: 12/01/2023] Open
Abstract
IMPORTANCE All viruses initiate infection by utilizing receptors to attach to target host cells. These virus-receptor interactions can therefore dictate viral replication and pathogenesis. Understanding the nature of virus-receptor interactions could also be important for the development of novel therapies. Noroviruses are non-enveloped icosahedral viruses of medical importance. They are a common cause of acute gastroenteritis with no approved vaccine or therapy and are a tractable model for studying fundamental virus biology. In this study, we utilized the murine norovirus model system to show that variation in a single amino acid of the major capsid protein alone can affect viral infectivity through improved attachment to suspension cells. Modulating plasma membrane mobility reduced infectivity, suggesting an importance of membrane mobility for receptor recruitment and/or receptor conformation. Furthermore, different substitutions at this site altered viral tissue distribution in a murine model, illustrating how in-host capsid evolution could influence viral infectivity and/or immune evasion.
Collapse
Affiliation(s)
- Jake T. Mills
- Astbury Centre for Structural Molecular Biology, School of Molecular & Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
| | - Susanna C. Minogue
- Astbury Centre for Structural Molecular Biology, School of Molecular & Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
| | - Joseph S. Snowden
- Astbury Centre for Structural Molecular Biology, School of Molecular & Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
| | - Wynter K. C. Arden
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - David J. Rowlands
- Astbury Centre for Structural Molecular Biology, School of Molecular & Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
| | - Nicola J. Stonehouse
- Astbury Centre for Structural Molecular Biology, School of Molecular & Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
| | - Christiane E. Wobus
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Morgan R. Herod
- Astbury Centre for Structural Molecular Biology, School of Molecular & Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
| |
Collapse
|
2
|
Yin Y, Zhao X, Yang L, Wang K, Sun Y, Ye J. Dietary High Glycinin Reduces Growth Performance and Impairs Liver and Intestinal Health Status of Orange-Spotted Grouper ( Epinephelus coioides). Animals (Basel) 2023; 13:2605. [PMID: 37627396 PMCID: PMC10452031 DOI: 10.3390/ani13162605] [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: 07/20/2023] [Revised: 08/07/2023] [Accepted: 08/10/2023] [Indexed: 08/27/2023] Open
Abstract
The aim of the study was to investigate whether the negative effects of dietary glycinin are linked to the structural integrity damage, apoptosis promotion and microbiota alteration in the intestine of orange-spotted grouper (Epinephelus coioides). The basal diet (FM diet) was formulated to contain 48% protein and 11% lipid. Fish meal was replaced by soybean meal (SBM) in FM diets to prepare the SBM diet. Two experimental diets were prepared, containing 4.5% and 10% glycinin in the FM diets (G-4.5 and G-10, respectively). Triplicate groups of 20 fish in each tank (initial weight: 8.01 ± 0.10 g) were fed the four diets across an 8 week growth trial period. Fish fed SBM diets had reduced growth rate, hepatosomatic index, liver total antioxidant capacity and GSH-Px activity, but elevated liver MDA content vs. FM diets. The G-4.5 exhibited maximum growth and the G-10 exhibited a comparable growth with that of the FM diet group. The SBM and G-10 diets down-regulated intestinal tight junction function genes (occludin, claudin-3 and ZO-1) and intestinal apoptosis genes (caspase-3, caspase-8, caspase-9, bcl-2 and bcl-xL), but elevated blood diamine oxidase activity, D-lactic acid and endotoxin contents related to intestinal mucosal permeability, as well as the number of intestinal apoptosis vs FM diets. The intestinal abundance of phylum Proteobacteria and genus Vibrio in SBM diets were higher than those in groups receiving other diets. As for the expression of intestinal inflammatory factor genes, in SBM and G-10 diets vs. FM diets, pro-inflammatory genes (TNF-α, IL-1β and IL-8) were up-regulated, but anti-inflammatory genes (TGF-β1 and IL-10) were down-regulated. The results indicate that dietary 10% glycinin rather than 4.5% glycinin could decrease hepatic antioxidant ability and destroy both the intestinal microbiota profile and morphological integrity through disrupting the tight junction structure of the intestine, increasing intestinal mucosal permeability and apoptosis. These results further trigger intestinal inflammatory reactions and even enteritis, ultimately leading to the poor growth of fish.
Collapse
Affiliation(s)
- Yanxia Yin
- Xiamen Key Laboratory for Feed Quality Testing and Safety Evaluation, Fisheries College, Jimei University, Xiamen 361021, China; (Y.Y.); (X.Z.); (L.Y.); (K.W.); (Y.S.)
| | - Xingqiao Zhao
- Xiamen Key Laboratory for Feed Quality Testing and Safety Evaluation, Fisheries College, Jimei University, Xiamen 361021, China; (Y.Y.); (X.Z.); (L.Y.); (K.W.); (Y.S.)
| | - Lulu Yang
- Xiamen Key Laboratory for Feed Quality Testing and Safety Evaluation, Fisheries College, Jimei University, Xiamen 361021, China; (Y.Y.); (X.Z.); (L.Y.); (K.W.); (Y.S.)
| | - Kun Wang
- Xiamen Key Laboratory for Feed Quality Testing and Safety Evaluation, Fisheries College, Jimei University, Xiamen 361021, China; (Y.Y.); (X.Z.); (L.Y.); (K.W.); (Y.S.)
- Fujian Engineering Research Center of Aquatic Breeding and Healthy Aquaculture, Fisheries College, Jimei University, Xiamen 361021, China
| | - Yunzhang Sun
- Xiamen Key Laboratory for Feed Quality Testing and Safety Evaluation, Fisheries College, Jimei University, Xiamen 361021, China; (Y.Y.); (X.Z.); (L.Y.); (K.W.); (Y.S.)
- Fujian Engineering Research Center of Aquatic Breeding and Healthy Aquaculture, Fisheries College, Jimei University, Xiamen 361021, China
| | - Jidan Ye
- Xiamen Key Laboratory for Feed Quality Testing and Safety Evaluation, Fisheries College, Jimei University, Xiamen 361021, China; (Y.Y.); (X.Z.); (L.Y.); (K.W.); (Y.S.)
- Fujian Engineering Research Center of Aquatic Breeding and Healthy Aquaculture, Fisheries College, Jimei University, Xiamen 361021, China
| |
Collapse
|
3
|
Song T, Qin Y, Ke L, Wang X, Wang K, Sun Y, Ye J. Dietary Lactoferrin Supplementation Improves Growth Performance and Intestinal Health of Juvenile Orange-Spotted Groupers ( Epinephelus coioides). Metabolites 2022; 12:915. [PMID: 36295817 PMCID: PMC9607261 DOI: 10.3390/metabo12100915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 09/14/2022] [Accepted: 09/25/2022] [Indexed: 11/16/2022] Open
Abstract
A 56-day feeding trial was conducted to investigate the effects of dietary lactoferrin (LF) supplementation on the growth performance and intestinal health of juvenile orange-spotted groupers fed high-soybean-meal (SBM) diets. The control diet (FM) and high-soybean-meal diet (SBM60) were prepared to contain 480 g/kg protein and 110 g/kg fat. Three inclusion levels of 2, 6, and 10 g/kg LF were added into the SBM60 to prepare three diets (recorded as LF2, LF6, and LF10, respectively). The results showed that the supplementation of LF in SBM60 increased the growth rate in a dose-dependent manner. However, the feed utilization, hepatosomatic index, whole-body proximate composition, and the abundance and diversity of intestinal microbiota did not vary across the dietary treatments (p > 0.05). After the dietary intervention with LF, the contents of the intestinal malondialdehyde, endotoxin, and d-lactic acid, as well as the plasma low-density lipoprotein cholesterol, high-density lipoprotein cholesterol, and total cholesterol were lower, and the intestinal activities of the glutathione peroxidase, lipase, trypsin, and protease were higher in the LF2-LF10 groups than that in the SBM60 group (p < 0.05). The supplementation of LF in SBM60 increased the muscle layer thickness of the middle and distal intestine and the mucosal fold length of the middle intestine vs. the SBM60 diet (p < 0.05). Furthermore, the supplementation of LF in SBM60 resulted in an up-regulation of the mRNA levels for the IL-10 and TGF-β1 genes and a down-regulation of the mRNA levels of the IL-1β, IL-12, IL-8, and TNF-α genes vs. the SBM60 diet (p < 0.05). The above results showed that a dietary LF intervention improves the growth and alleviates soybean meal-induced enteritis in juvenile orange-spotted groupers. The dietary appropriate level of LF was at 5.8 g/kg, through the regression analysis of the percent weight gain against the dietary LF inclusion levels.
Collapse
Affiliation(s)
- Tao Song
- Xiamen Key Laboratory for Feed Quality Testing and Safety Evaluation, Fisheries College of Jimei University, Xiamen 361021, China
| | - Yingmei Qin
- Xiamen Key Laboratory for Feed Quality Testing and Safety Evaluation, Fisheries College of Jimei University, Xiamen 361021, China
| | - Liner Ke
- Xiamen Key Laboratory for Feed Quality Testing and Safety Evaluation, Fisheries College of Jimei University, Xiamen 361021, China
| | - Xuexi Wang
- Key Laboratory of Marine Biotechnology of Fujian Province, College of Marine Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Kun Wang
- Xiamen Key Laboratory for Feed Quality Testing and Safety Evaluation, Fisheries College of Jimei University, Xiamen 361021, China
| | - Yunzhang Sun
- Xiamen Key Laboratory for Feed Quality Testing and Safety Evaluation, Fisheries College of Jimei University, Xiamen 361021, China
| | - Jidan Ye
- Xiamen Key Laboratory for Feed Quality Testing and Safety Evaluation, Fisheries College of Jimei University, Xiamen 361021, China
| |
Collapse
|
4
|
Cui WY, Yoo HJ, Li YG, Baek C, Min J. Facile and foldable point-of-care biochip for nucleic acid based-colorimetric detection of murine norovirus in fecal samples using G-quadruplex and graphene oxide coated microbeads. Biosens Bioelectron 2021; 199:113878. [PMID: 34915211 DOI: 10.1016/j.bios.2021.113878] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/06/2021] [Accepted: 12/09/2021] [Indexed: 11/02/2022]
Abstract
Norovirus is one of the most common causes of gastroenteritis, a disease characterized by diarrhea, vomiting, and stomach pain. A rapid on-site identification of the virus from fecal samples of patients is a prerequisite for accurate medical management. Here, we demonstrate a rapid nucleic acid-based detection platform as an on-site biosensing tool that can concentrate viruses from fecal samples. Moreover, it can perform RNA extraction and identification, and signal amplification using G-quadruplex and hemin containing DNA probes (G-DNA probes) and graphene oxide (GO)-coated microbeads. Briefly, murine noroviruses are lysed without chemicals on the surface of the GO microbeads. Subsequently, the target RNA is hybridized with G-DNA probes, and the resultant RNA/G-DNA probe complex is separated from unbound G-DNA probes using GO beads and is mixed with the detection buffer (ABTS/H2O2). Presence of murine noroviruses causes a colorimetric change of the buffer from colorless to green. Thus, we integrated all processes required to detect murine noroviruses in stool samples in a simple foldable microfluidic chip. Moreover, it can detect 101 pfu of the virus in 30 min in a fecal sample.
Collapse
Affiliation(s)
- Wen Ying Cui
- School of Integrative Engineering, Chung-Ang University, Heukseok-dong, Dongjak-gu, Seoul, 06974, South Korea
| | - Hyun Jin Yoo
- School of Integrative Engineering, Chung-Ang University, Heukseok-dong, Dongjak-gu, Seoul, 06974, South Korea
| | - Yun Guang Li
- School of Integrative Engineering, Chung-Ang University, Heukseok-dong, Dongjak-gu, Seoul, 06974, South Korea
| | - Changyoon Baek
- School of Integrative Engineering, Chung-Ang University, Heukseok-dong, Dongjak-gu, Seoul, 06974, South Korea
| | - Junhong Min
- School of Integrative Engineering, Chung-Ang University, Heukseok-dong, Dongjak-gu, Seoul, 06974, South Korea.
| |
Collapse
|
5
|
Development and Characterization of SYBR Green I Based RT-PCR Assay for Detection of Omsk Hemorrhagic Fever Virus. Virol Sin 2021; 36:1644-1647. [PMID: 34076867 DOI: 10.1007/s12250-021-00389-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Accepted: 03/17/2021] [Indexed: 10/21/2022] Open
|
6
|
Abstract
Not only since SARS-CoV-2, have transmission routes of viruses been of interest. Noroviruses e.g., can be transmitted via smear infection, are relatively stable in the environment and very resistant to chemical disinfection. Some studies determined the virucidal efficacy of laundering processes, but few studies focused on the virucidal efficacy of dishwashing processes. Here, especially consumer related conditions are of interest. Households for example are a hotspot of norovirus infection and thus a sufficient reduction of these and other viruses from dishes must be insured to avoid an infection via this route. The likelihood of such an event should not be underestimated, since it was shown that the washing machine can be a reservoir for the transmission of extended spectrum beta-lactamase producing bacteria in newborns. Although viruses do not replicate in these devices a transmission via contaminated cutlery e.g., cannot be excluded. Using a consumer related approach to determine the virucidal efficacy of dishwashers, we found a combination of a bleach containing dishwasher detergent, a cleaning temperature of 45 °C for 45 min and a rinsing temperature of 50 °C, to be sufficient to reduces viral titer of bovine corona virus, murine norovirus and modified vaccinia virus by 4.8, 4.2 and 3.8 logarithmic stages respectively.
Collapse
|
7
|
Role of lncRNAHCP5/microRNA-525-5p/PRC1 crosstalk in the malignant behaviors of ovarian cancer cells. Exp Cell Res 2020; 394:112129. [PMID: 32511950 DOI: 10.1016/j.yexcr.2020.112129] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 05/29/2020] [Accepted: 06/01/2020] [Indexed: 12/15/2022]
Abstract
PURPOSE Owing to the late diagnosis and frequent metastasis, ovarian cancer (OC) exhibits a high mortality rate. The study was intended to figure out the function of long non-coding RNA (lncRNA) HCP5 in OC metastasis. METHODS Microarray analysis was conducted to probe aberrantly expressed lncRNAs in OC tissues. Artificial silencing of lncRNA HCP5 was introduced in OC cells to identify its role in cell viability, invasion, migration, and epithelial-mesenchymal transition (EMT). The potential downstream targets of lncRNA HCP5 were predicted by bio-information system and validated through dual luciferase reporter gene assays. Silencing of microRNA-525-5p (miR-525-5p) was introduced in cells to probe its role in cell behaviors. Xenograft tumors were induced in nude mice for in vivo experiments. RESULTS High expression of lncRNA HCP5 was found in OC tissues and cells. Silencing of lncRNA HCP5 led to a decrease in cell proliferation, invasion, migration and EMT process. LncRNA HCP5 is mainly sub-localized in cytoplasm. LncRNA HCP5 could act as a sponge for miR-525-5p, which could further bind to polycomb repressive complex 1 (PRC1). Knockdown of miR-525-5p partly recovered the biological behaviors of OC cells inhibited by HCP5 silencing. In addition, HCP5 promoted Wnt/β-catenin signaling pathway activity. Silencing of lncRNA HCP5 also impeded growth and metastasis of tumor in mice. CONCLUSION The study suggested that lncRNA HCP5 might promote malignant behaviors of OC cells through the miR-525-5p/PRC1 crosstalk and the Wnt/β-catenin pathway. Silencing of HCP5 might serve as a novel option for OC treatment.
Collapse
|
8
|
Duan R, Li C, Wang F, Han F, Zhu L. The Long Noncoding RNA ZFAS1 Potentiates the Development of Hepatocellular Carcinoma via the microRNA-624/MDK/ERK/JNK/P38 Signaling Pathway. Onco Targets Ther 2020; 13:4431-4444. [PMID: 32547074 PMCID: PMC7250709 DOI: 10.2147/ott.s246278] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 04/22/2020] [Indexed: 12/14/2022] Open
Abstract
Background A long noncoding RNA (lncRNA), ZNFX1 antisense RNA 1 (ZFAS1), was increased in multiple cancers, including hepatocellular carcinoma (HCC), resulting in malignancy development and progression. However, the mechanisms involving the interaction between ZFAS1 and microRNA-624 (miRNA-624) remain largely unknown. Therefore, the goal of this study was to probe the functional role of ZFAS1 in the development of HCC and its underlying mechanism. Methods Firstly, differentially expressed lncRNAs in HCC tissues were screened out by microarray. Subsequently, the prognostic effect of ZFAS1 patients with HCC was analyzed by the Kaplan-Meier analysis and The Cancer Genome Atlas database. ZFAS1 regulation on miRNA-624 was determined after si-ZFAS1 and/or miRNA-624 inhibitor were transfected into HepG2 and SMMC7721 cell lines. Finally, the effects of ZFAS1 on the growth and metastasis of HCC were observed by in vivo tumorigenesis and metastasis tests. Results ZFAS1 was overexpressed in HCC tissues and cells and indicated worse prognosis and shorter survival in patients with HCC. Silencing of ZFAS1 inhibited the malignancy of HCC cells, but miR-624 inhibitor could partially reverse the repressive role of si-ZFAS1. Moreover, ZFAS1 induced the extracellular-regulated protein kinases/c-Jun N-terminal kinase (ERK/JNK)/P38 pathway by binding to midkine (MDK) through miR-624, thus promoting the occurrence of HCC. Conclusion Collectively, ZFAS1 depletion inhibited the occurrence of HCC by downregulating the MDK/ERK/JNK/P38 pathway through restoring miR-624 expression. Inhibition of ZFAS1 may act as an innovative target to suppress occurrence in HCC.
Collapse
Affiliation(s)
- Rui Duan
- Department of Hepatological Surgery, The First People's Hospital of Jingmen, Jingmen, Hubei 448000, People's Republic of China
| | - Caiyan Li
- Department of Clinical Laboratory, The Second People's Hospital of Jingmen, Jingmen 448000, Hubei, People's Republic of China
| | - Fan Wang
- Department of Hepatological Surgery, The First People's Hospital of Jingmen, Jingmen, Hubei 448000, People's Republic of China
| | - Fei Han
- Department of Oncology, Affiliated Hospital of Chongqing Medical University, Chongqing 400000, People's Republic of China
| | - Ling Zhu
- Department of Hepatological Surgery, The First People's Hospital of Jingmen, Jingmen, Hubei 448000, People's Republic of China
| |
Collapse
|
9
|
Zhong Q, Chen Y, Chen Z. LncRNA MINCR regulates irradiation resistance in nasopharyngeal carcinoma cells via the microRNA-223/ZEB1 axis. Cell Cycle 2019; 19:53-66. [PMID: 31760895 PMCID: PMC6927709 DOI: 10.1080/15384101.2019.1692176] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Emerging evidence suggests long non-coding RNA (lncRNA) could sponge microRNAs (miRs) and monitor gene expression. In this study, we intended to search the network involving lncRNA MINCR/miR-223/ZEB1 in nasopharyngeal carcinoma (NPC) cell radiosensitivity. MINCR expression in NPC tissues, precancerous lesions and chronic nasopharyngeal mucosal inflammation tissues, and in NP460, CNE2 and CNE2R cells was detected. The associations between MINCR expression and prognosis and radiotherapy efficacy of NPC patients were evaluated. The interactions among MINCR, miR-223 and ZEB1 were verified via dual luciferase reporter gene assay, RNA pull-down and FISH assays. The gain- and loss-of-functions were performed to explore their effects on NPC cell viability, apoptosis and radiosensitivity. Levels of MINCR, miR-223, ZEB1, and AKT/PI3K-related proteins were detected after different treatments. An in vivo analysis was carried out in nude mice. Consequently, MINCR was upregulated in NPC, and linked with worse prognosis and radiotherapy efficacy. MINCR intervention weakened NPC cell radioresistance. MINCR sponged miR-223 to regulate ZEB1. Inactivating AKT eliminated the increased radioresistance of CNE2 cells induced by overexpressing MINCR. Briefly, MINCR diminished NPC cell radiosensitivity by sponging miR-223, increasing ZEB1 and activating the AKT/PI3K axis. This study may offer novel insight for NPC treatment.
Collapse
Affiliation(s)
- Qingmu Zhong
- Department of Radiation Oncology, First Hospital of Quanzhou Affiliated to Fujian Medical University, Quanzhou, Fujian, P.R. China
| | - Yifeng Chen
- Department of Pathology, First Hospital of Quanzhou Affiliated to Fujian Medical University, Quanzhou, Fujian, P.R. China
| | - Zilong Chen
- Department of Radiation Oncology, First Hospital of Quanzhou Affiliated to Fujian Medical University, Quanzhou, Fujian, P.R. China
| |
Collapse
|
10
|
Ma L, Zeng F, Cong F, Huang B, Zhu Y, Wu M, Xu F, Yuan W, Huang R, Guo P. Development and evaluation of a broadly reactive reverse transcription recombinase polymerase amplification assay for rapid detection of murine norovirus. BMC Vet Res 2018; 14:399. [PMID: 30547776 PMCID: PMC6295035 DOI: 10.1186/s12917-018-1736-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2018] [Accepted: 12/05/2018] [Indexed: 11/10/2022] Open
Abstract
Background Murine norovirus (MNV) is recognized as the most prevalent viral pathogen in captive mouse colonies. The rapid detection assay for MNV would be a useful tool for monitoring and preventing MNV infection. A recombinase polymerase amplification (RPA) assay was established in this study to provide a solution for rapid and sensitive detection of MNV. Results The detection limit of the RT-RPA assay for the detection of MNV was 1 × 102 copies of RNA molecules per reaction. The assay was specific since there was no cross-reaction with other common murine viruses. In addition, the broad reactivity of the RT-RPA assay was validated using the synthesized template carrying seven point mutations among several MNV strains. The MNV RT-RPA assay could detect as few as 1 × 102 copies of the mutant per reaction, suggesting the assay could be broadly reactive against a large diversity of MNV strains. Forty eight clinical samples including 16 gastric tissue specimens, 16 cecal tissue specimens and 16 fecal specimens were tested for the validation of the new developed RT-RPA assay. The detection results of RT-RPA and RT-qPCR for clinical samples were very similar, except that a gastric tissue sample which was positive by RT-qPCR, with a RNA titer of 27 copies, was negative by RT-RPA. Conclusions A broadly reactive RT-RPA assay was successfully established for MNV detection.
Collapse
Affiliation(s)
- Lei Ma
- Guangdong Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou, China
| | - Fanwen Zeng
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510640, China
| | - Feng Cong
- Guangdong Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou, China
| | - Bihong Huang
- Guangdong Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou, China
| | - Yujun Zhu
- Guangdong Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou, China
| | - Miaoli Wu
- Guangdong Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou, China
| | - Fengjiao Xu
- Guangdong Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou, China
| | - Wen Yuan
- Guangdong Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou, China
| | - Ren Huang
- Guangdong Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou, China
| | - Pengju Guo
- Guangdong Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou, China.
| |
Collapse
|
11
|
Moreira JCDO, Rodrigues DM, Gilioli R, Costa FF, Albuquerque DM. A semi-nested RT-PCR assay for detection of norovirus in rat fecal samples. Exp Anim 2018; 68:169-176. [PMID: 30531093 PMCID: PMC6511519 DOI: 10.1538/expanim.18-0049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Norovirus is a highly prevalent pathogen that can infect a wide range of host species.
Thus far, there have only been two reports of norovirus infection in rats. Diagnostic
assays for the detection of norovirus are well established, but a specific molecular assay
for the diagnosis of norovirus infection in laboratory rats has not yet been reported. In
this study, we describe the development of a sensitive, semi-nested RT-PCR assay for
detection of norovirus in fecal samples from Rattus norvegicus, reared in
animal facilities under different sanitary barrier conditions. Additionally, we describe
the first report of the presence of norovirus in rat colonies from Brazilian animal
facilities.
Collapse
Affiliation(s)
| | - Daniele Masselli Rodrigues
- Cidade Universitária "Zeferino Vaz" Barão Geraldo, 250, 5 de Junho Street, Campinas - São Paulo 13083-970, Brazil
| | - Rovilson Gilioli
- Cidade Universitária "Zeferino Vaz" Barão Geraldo, 250, 5 de Junho Street, Campinas - São Paulo 13083-970, Brazil
| | - Fernando Ferreira Costa
- Cidade Universitária "Zeferino Vaz" Barão Geraldo, 480 Carlos Chagas Street, Campinas - São Paulo 13083-878, Brazil
| | | |
Collapse
|
12
|
Rodrigues DM, Moreira JCDO, Lancellotti M, Gilioli R, Corat MAF. Murine norovirus infection in Brazilian animal facilities. Exp Anim 2016; 66:115-124. [PMID: 28049885 PMCID: PMC5411298 DOI: 10.1538/expanim.16-0027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Murine norovirus (MNV) is a single-stranded positive-sense RNA virus of the
Caliciviridae family. MNV has been reported to infect laboratory mice
with the ability to cause lethal infections in strains lacking components of the innate
immune response. Currently, MNV is considered the most prevalent infectious agent detected
in laboratory mouse facilities. In this study, mice in 22 laboratory animal facilities
within Brazil were analyzed for MNV infection. Using primers targeting a conserved region
of the viral capsid, MNV was detected by RT-PCR in 137 of 359 mice from all 22 facilities.
Nucleotide sequencing and phylogenetic analysis of the capsid region from the viral genome
showed identity ranging from 87% to 99% when compared to reported MNV sequences. In
addition, RAW264.7 cells inoculated with a mouse fecal suspension displayed cytopathic
effect after the fifth passage. This study represents the first report of MNV in mouse
colonies in Brazilian laboratory animal facilities, emphasizing the relevance of a health
surveillance program in such environments.
Collapse
Affiliation(s)
- Daniele Masselli Rodrigues
- Multidisciplinary Center for Biological Research on Laboratory Animal Science (CEMIB), Animal Health Laboratory, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Josélia Cristina de Oliveira Moreira
- Multidisciplinary Center for Biological Research on Laboratory Animal Science (CEMIB), Animal Health Laboratory, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Marcelo Lancellotti
- Department of Biochemistry, Institute of Biology, University of Campinas, Campinas, São Paulo 13083-970, Brazil
| | - Rovilson Gilioli
- Multidisciplinary Center for Biological Research on Laboratory Animal Science (CEMIB), Animal Health Laboratory, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Marcus Alexandre Finzi Corat
- Multidisciplinary Center for Biological Research on Laboratory Animal Science (CEMIB), Animal Health Laboratory, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| |
Collapse
|
13
|
Ghosh S, Sow A, Guillot C, Jeng A, Ndow G, Njie R, Toure S, Diop M, Mboup S, Kane CT, Lemoine M, Thursz M, Zoulim F, Mendy M, Chemin I. Implementation of an in-house quantitative real-time polymerase chain reaction method for Hepatitis B virus quantification in West African countries. J Viral Hepat 2016; 23:897-904. [PMID: 27353593 DOI: 10.1111/jvh.12561] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Accepted: 05/03/2016] [Indexed: 12/16/2022]
Abstract
Hepatitis B virus (HBV) is a major cause of chronic liver disease worldwide. HBV infection is diagnosed by serological tests, while real-time polymerase chain reaction (qRT-PCR) assays are used to quantify viral load, which is a crucial parameter to determine viral replication and to monitor antiviral treatments. However, measuring viral load in resource-limited countries remains nonsystematic, due to the high cost of commercial kits. Here, we describe the development, validation and implementation of a low-cost, in-house qRT-PCR assay to monitor HBV viral load in chronic carriers enrolled in the PROLIFICA programme in the Gambia and Senegal. Over 1500 HBsAg-positive patients, including 210 chronically infected HBV patients, who were given antiviral treatment (tenofovir), were monitored by qRT-PCR using the SYBR Green- and HBV-specific primers. Twenty-four tenofovir-treated patients were followed up and their viral load was tested every 3 months over the 12-month experimental time course. Compared to commercial assays, our in-house assay was shown to be (i) highly reliable, with good intra- and interassay reproducibility over a wide range (45-4.5 × 108 copies mL-1 ), (ii) very similar in the viral loads detected (R2 = .90), (iii) highly sensitive, as it detected loads as low as 30 copies mL-1 (~5 IU mL-1 ), (iv) cheaper (2- to 3-fold), (v) easier to implement and (vi) more rapid. Based on our experience, we recommend this assay as a reliable alternative to commercial assays, for monitoring HBV viraemia in resource-limited, highly endemic countries to reduce the cost and technical obstacles associated with commercial kits.
Collapse
Affiliation(s)
- S Ghosh
- INSERM U1052, CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon Université Claude Bernard, Lyon, France
| | - A Sow
- La Dantec, Dakar, Senegal
| | - C Guillot
- INSERM U1052, CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon Université Claude Bernard, Lyon, France
| | - A Jeng
- MRC, The Gambia Unit, Banjul, The Gambia
| | - G Ndow
- MRC, The Gambia Unit, Banjul, The Gambia
- Department of Hepatology, Imperial College London, London, UK
| | - R Njie
- MRC, The Gambia Unit, Banjul, The Gambia
- Laboratory Services and Biobank Group (DIR/LSB), IARC, Lyon, France
| | - S Toure
- MRC, The Gambia Unit, Banjul, The Gambia
| | - M Diop
- La Dantec, Dakar, Senegal
| | | | | | - M Lemoine
- Department of Hepatology, Imperial College London, London, UK
| | - M Thursz
- Department of Hepatology, Imperial College London, London, UK
| | - F Zoulim
- INSERM U1052, CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon Université Claude Bernard, Lyon, France
- Department of Hepatology, Hospices Civils de Lyon, Lyon, France
| | - M Mendy
- Laboratory Services and Biobank Group (DIR/LSB), IARC, Lyon, France
| | - I Chemin
- INSERM U1052, CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon Université Claude Bernard, Lyon, France.
| |
Collapse
|
14
|
Hsu CC, Piotrowski SL, Meeker SM, Smith KD, Maggio-Price L, Treuting PM. Histologic Lesions Induced by Murine Norovirus Infection in Laboratory Mice. Vet Pathol 2016; 53:754-63. [PMID: 26792844 DOI: 10.1177/0300985815618439] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Murine noroviruses (MNVs) are highly prevalent in laboratory mice, can cause persistent infections, and have been shown to infect macrophages, dendritic cells, and B cells. To address the potential impact of MNV infection on research outcomes, numerous studies have been conducted with various mouse models of human disease and have generated mixed results, ranging from no impact to significant disease. Many of these studies included histologic evaluations after MNV infection, and these results have similarly been variable in terms of whether MNV induces lesions, despite the fact that localization of MNV by viral culture and molecular techniques have demonstrated systemic distribution regardless of mouse immune status. The aim of this review is to summarize the histologic findings that have been reported with MNV infection in several mouse models. The studies demonstrate that experimental infection of MNV in wild-type mice results in minimal to no histologic changes. In contrast, immunodeficient mice consistently have detectable MNV-induced lesions that are typically inflammatory and, in the most severe cases, accompanied by necrosis. In these, the liver is commonly affected, with more variable lesions reported in the lung, gastrointestinal tract, mesenteric lymph nodes, brain, and spleen. In specific disease models including atherosclerosis, MNV infection had a variable impact that was dependent on the mouse model, viral strain, timing of infection, or other experimental variables. It is important to recognize the reported MNV lesions to help discern the possible influence of MNV infection on data generated in mouse models.
Collapse
Affiliation(s)
- C C Hsu
- Department of Comparative Medicine, University of Washington, Seattle, WA, USA
| | - S L Piotrowski
- Department of Comparative Medicine, University of Washington, Seattle, WA, USA The University of Texas Health Science Center at Houston, Center for Laboratory Animal Medicine and Care, Houston, TX, USA
| | - S M Meeker
- Department of Comparative Medicine, University of Washington, Seattle, WA, USA
| | - K D Smith
- Department of Pathology, University of Washington, Seattle, WA, USA
| | - L Maggio-Price
- Department of Comparative Medicine, University of Washington, Seattle, WA, USA
| | - P M Treuting
- Department of Comparative Medicine, University of Washington, Seattle, WA, USA
| |
Collapse
|