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Fenaux H, Rafek R, Thouard, Decombe G, Vieux-Combe C, Hottelet C, Sulla P, Mouna L. Evaluation of the AltoStar AM16 system for the quantitation of AdV, CMV and HHV-6 DNA from clinical specimens. J Virol Methods 2024; 329:114982. [PMID: 38971380 DOI: 10.1016/j.jviromet.2024.114982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 06/05/2024] [Accepted: 06/11/2024] [Indexed: 07/08/2024]
Abstract
The vulnerability of immunocompromised patients to common or opportunistic viral infections is particularly high. The quantitation of viral load in clinical specimens is important for the diagnosis and management of the infection and reactivation in this patient population, particularly transplant recipients. As the new regulation "IVDR" regarding in vitro diagnosis methods is about to come into effect in France, diagnostic laboratories have to implement methods and systems compatible with this new regulation. Technical performance of the AltoStar® Adenovirus (AdV), Cytomegalovirus (CMV) and human Herpesvirus-6 (HHV-6) DNA PCR Kits 1.5 was assessed on the AltoStar Automation system AM16 using reference kits in 146 clinical samples. Overall agreement in clinical specimens was 87.5 % (28/32), 96.8 % (62/64), 100 % (22/22), 100 % (28/28) and 92.8 % (26/28) for AdV, CMV (WB samples and other matrices), HHV-6 A&B respectively. Quantitative results were highly correlated and estimated to be equivalent within a 0.057-0.648 log-amount difference.We found that altona kits on The AltoStar AM16 system are suitable for clinical monitoring of AdV, CMV and HHV-6 in immunocompromised hosts.
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Affiliation(s)
- H Fenaux
- AP-HP, hôpital Paul Brousse, Laboratoire de virologie, Villejuif 94800, France
| | - R Rafek
- AP-HP, hôpital Paul Brousse, Laboratoire de virologie, Villejuif 94800, France; Division of Virology, WHO Rubella National Reference Laboratory, Dept of Biology Genetics, Paul Brousse Hospital, Paris Saclay University Hospital, APHP, Villejuif, France
| | - Thouard
- AP-HP, hôpital Paul Brousse, Laboratoire de virologie, Villejuif 94800, France
| | - G Decombe
- AP-HP, hôpital Paul Brousse, Laboratoire de virologie, Villejuif 94800, France
| | - C Vieux-Combe
- AP-HP, hôpital Paul Brousse, Laboratoire de virologie, Villejuif 94800, France
| | - C Hottelet
- AP-HP, hôpital Paul Brousse, Laboratoire de virologie, Villejuif 94800, France
| | - Portet Sulla
- AP-HP, hôpital Paul Brousse, Laboratoire de virologie, Villejuif 94800, France; Division of Virology, WHO Rubella National Reference Laboratory, Dept of Biology Genetics, Paul Brousse Hospital, Paris Saclay University Hospital, APHP, Villejuif, France; Paris Saclay University, INSERM U1184, CEA, Center for Immunology of Viral, Auto-immune, Hematological and Bacterial diseases (IMVA-HB/IDMIT), Fontenay-aux-Roses, France
| | - L Mouna
- AP-HP, hôpital Paul Brousse, Laboratoire de virologie, Villejuif 94800, France; Division of Virology, WHO Rubella National Reference Laboratory, Dept of Biology Genetics, Paul Brousse Hospital, Paris Saclay University Hospital, APHP, Villejuif, France.
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Wang X, Cheng J, Shen L, Chen M, Sun K, Li J, Li M, Ma C, Wei L. Rab5c promotes RSV and ADV replication by autophagy in respiratory epithelial cells. Virus Res 2024; 341:199324. [PMID: 38242290 PMCID: PMC10830860 DOI: 10.1016/j.virusres.2024.199324] [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: 12/01/2023] [Revised: 01/15/2024] [Accepted: 01/16/2024] [Indexed: 01/21/2024]
Abstract
Respiratory system diseases caused by respiratory viruses are common and exert tremendous pressure on global healthcare system. In our previous studies, we found that Long non-coding RNA NRAV (Lnc NRAV) and its target molecule Rab5c plays a significant role in respiratory virus infection. However, the mechanism by which Rab5c affects virus replication remains unclear. Rab5c, a protein mainly localized on the cell membranes and in early endosomes and phagosomes, participates in endocytosis mediated by clathrin and regulates the fusion of early endosome, maturation of early phagosomes, and autophagy. Therefore, we inferred that Rab5c impacts virus replication, which might be related to endocytosis or autophagy. We selected RSV (respiratory syncytial virus) as a representative enveloped virus and ADV (Adenovirus) as a representative non-enveloped virus to explore the possible mechanism of RSV and ADV replication promoted by Rab5c in A549 cells and in Rab5c-overexpressing mice. Here, we confirmed that the activated Rab5c promotes RSV and ADV replication and the inactivated Rab5c inhibits their replication. However, Rab5c promoting RSV and ADV replication is not mediated by endocytosis rather by autophagy in respiratory epithelial cells. Our study showed that Rab5c upregulates LC3-Ⅱ (microtubule-associated protein 1 light chain 3 beta) protein expression levels by interacting with Beclin1, a key autophagy molecule, which can induce autophagy and promote replication of ADV and RSV. This study enriches the understanding of the interaction between respiratory viruses and Rab5c, providing new insights for virus prevention and treatment.
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Affiliation(s)
- Xiuli Wang
- Department of Immunology, Hebei Medical University, Shijiazhuang, Hebei, China; Key Laboratory of Immune Mechanism and Intervention on Serious Disease in Hebei Province, Shijiazhuang, Hebei, China; Clinical Laboratory, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Jing Cheng
- Department of Immunology, Hebei Medical University, Shijiazhuang, Hebei, China; Key Laboratory of Immune Mechanism and Intervention on Serious Disease in Hebei Province, Shijiazhuang, Hebei, China
| | - Linchao Shen
- Department of Immunology, Hebei Medical University, Shijiazhuang, Hebei, China; Key Laboratory of Immune Mechanism and Intervention on Serious Disease in Hebei Province, Shijiazhuang, Hebei, China
| | - Meixi Chen
- Department of Immunology, Hebei Medical University, Shijiazhuang, Hebei, China; Key Laboratory of Immune Mechanism and Intervention on Serious Disease in Hebei Province, Shijiazhuang, Hebei, China; Clinical Laboratory, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Keran Sun
- Department of Immunology, Hebei Medical University, Shijiazhuang, Hebei, China; Key Laboratory of Immune Mechanism and Intervention on Serious Disease in Hebei Province, Shijiazhuang, Hebei, China
| | - Jian Li
- Department of Immunology, Hebei Medical University, Shijiazhuang, Hebei, China; Key Laboratory of Immune Mechanism and Intervention on Serious Disease in Hebei Province, Shijiazhuang, Hebei, China; Department of Pathogen Biology, Hebei Medical University, Shijiazhuang, Hebei, China
| | - Miao Li
- Department of Immunology, Hebei Medical University, Shijiazhuang, Hebei, China; Key Laboratory of Immune Mechanism and Intervention on Serious Disease in Hebei Province, Shijiazhuang, Hebei, China
| | - Cuiqing Ma
- Department of Immunology, Hebei Medical University, Shijiazhuang, Hebei, China; Key Laboratory of Immune Mechanism and Intervention on Serious Disease in Hebei Province, Shijiazhuang, Hebei, China
| | - Lin Wei
- Department of Immunology, Hebei Medical University, Shijiazhuang, Hebei, China; Key Laboratory of Immune Mechanism and Intervention on Serious Disease in Hebei Province, Shijiazhuang, Hebei, China.
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Wang F, Li X, Liu Z, Zhao X, Zhao C, Hou G, Liu Q, Liu X. A Magnetic-Optical Triple-Mode Lateral Flow Immunoassay for Sensitive and Rapid Detection of Respiratory Adenovirus. Anal Chem 2024; 96:2059-2067. [PMID: 38258754 DOI: 10.1021/acs.analchem.3c04696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
Human respiratory adenovirus (ADV) is a highly infectious respiratory virus with potential for pandemics. There are currently no specific drugs to treat ADV worldwide, so early rapid detection of ADV infection is essential. In this study, we developed an innovative magnetic-optical triple-mode lateral flow immunoassay (LFIA) using magnetic quantum dots as immunomarkers. This novel approach addresses the need for rapid and accurate ADV detection, allowing for multimodal quantitative/semiquantitative analysis of magnetic, fluorescent, and visible signals within a mere 15 min. The lower limit of detection (LOD) for magnetic, fluorescent, and visual signals was determined to be 5.6 × 103, 1.2 × 103, and 1.95 × 104 copies/mL, respectively. The detection range for ADV using this approach was 1.2 × 103-5 × 107 copies/mL. Additionally, semiquantitative analysis, which is user-friendly and does not necessitate specialized equipment, was successfully implemented. Notably, seven respiratory viruses showed no cross-reactivity with the generated LFIA test strips. The intrabatch repeatability exhibited a coefficient of variation (CV) of less than 5%, while the interbatch repeatability had a CV of less than 15%. Furthermore, recovery values ranged from 95% to 106.8% for samples analyzed concurrently with dual signals at the same spiking concentration. The assay developed in this study boasts a wide detection range and exceptional sensitivity and specificity. This technique is exceptionally well-suited for on-site rapid detection, with the potential for personal self-testing and early ADV infection diagnosis. Its versatility extends to a broad array of application scenarios.
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Affiliation(s)
- Fei Wang
- The First Affiliated Hospital of Jinzhou Medical University, Jinzhou 121001, PR China
- Bioinformatics Center of Academy of Military Medical Sciences, Beijing 100850, PR China
| | - Xiaoyan Li
- Bioinformatics Center of Academy of Military Medical Sciences, Beijing 100850, PR China
| | - Zhining Liu
- The First Affiliated Hospital of Jinzhou Medical University, Jinzhou 121001, PR China
| | - Xin Zhao
- The First Affiliated Hospital of Jinzhou Medical University, Jinzhou 121001, PR China
| | - Changxu Zhao
- Bioinformatics Center of Academy of Military Medical Sciences, Beijing 100850, PR China
| | - Guangzheng Hou
- Bioinformatics Center of Academy of Military Medical Sciences, Beijing 100850, PR China
| | - Qiqi Liu
- Bioinformatics Center of Academy of Military Medical Sciences, Beijing 100850, PR China
| | - Xin Liu
- The First Affiliated Hospital of Jinzhou Medical University, Jinzhou 121001, PR China
- Jinzhou Medical University Huludao Central Hospital Teaching Base, Huludao 125001,PR China
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Mah J, Huang C, Sahoo MK, Pinsky BA. Evaluation of an automated system for the quantitation of human Herpesvirus-6 DNA from clinical specimens. Pract Lab Med 2023; 36:e00329. [PMID: 37649537 PMCID: PMC10462668 DOI: 10.1016/j.plabm.2023.e00329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 07/19/2023] [Accepted: 08/01/2023] [Indexed: 09/01/2023] Open
Abstract
Background Quantitation of human herpesvirus-6 (HHV-6) DNA in clinical specimens is important for the diagnosis and management of HHV-6-associated infection and reactivation in immunocompromised patients, particularly transplant recipients. Methods The analytical performance of the Altona RealStar ASR HHV-6 qPCR on the semi-automated AltoStar AM16 system was assessed using HHV-6 reference material in plasma and cerebral spinal fluid (CSF). Qualitative and quantitative agreement was determined using 123 clinical EDTA plasma specimens tested using a laboratory-developed HHV-6 qPCR. Results The 95% Lower Limit of Detection was 20 IU/mL [95% confidence interval (CI): 10 to 29] in plasma and 78 IU/mL (95% CI: 55 to 146) in CSF. The assay was linear from 7.0 to 2.0 log10 IU/mL in both matrices. Overall agreement of the RealStar ASR HHV-6 qPCR on the AltoStar AM16 with a laboratory-developed test was 95.9% (95% CI: 90.8 to 98.7). Passing-Bablok analysis of specimens quantifiable by both methods and at levels >1000 copies/mL revealed a regression line of Y = 1.00*X-0.20, with neither systematic (95% CI Y-intercept: -0.66 to 0.26) nor proportional (95% CI slope: 0.89 to 1.10) bias compared to the reference. Conclusions The RealStar ASR HHV-6 qPCR on the AltoStar AM16 provides accurate quantitation for clinical monitoring of HHV-6 in immunocompromised hosts.
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Affiliation(s)
- Jordan Mah
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | - ChunHong Huang
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | - Malaya K. Sahoo
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | - Benjamin A. Pinsky
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
- Department of Medicine, Division of Infectious Diseases and Geographic Medicine, Stanford University School of Medicine, Stanford, CA, USA
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