Single-cell transcriptional analysis of murine norovirus infection in a human intestinal cell line

被引:1
作者
Matsushima, Yuki [1 ]
Levenson, Eric A. [2 ]
Chaimongkol, Natthawan [1 ]
Harris, Loyall [1 ]
Zhao, Yongmei [3 ]
Turan, Sevilay [4 ]
Otaizo-Carrasquero, Francisco [5 ]
Ganesan, Sundar [6 ]
Hornick, Katherine M. [7 ]
Martens, Craig [5 ]
Sosnovtsev, Stanislav V. [1 ]
Green, Kim Y. [1 ]
机构
[1] NIAID, Caliciviruses Sect, Lab Infect Dis, Div Intramural Res,NIH, Bethesda, MD 20892 USA
[2] US FDA, Ctr Biol Evaluat & Res, Rockville, MD USA
[3] Frederick Natl Lab Canc Res, Sequencing Facil Bioinformat Grp, Bioinformat & Computat Sci Directorate, Frederick, MD USA
[4] Leidos Biomed Sci Inc, Frederick Natl Lab Canc Res, Frederick, MD USA
[5] NIAID, Genom Res Sect, Res Technol Branch, Div Intramural Res,NIH, Bethesda, MD USA
[6] NIAID, Biol Imaging Sect, Res Technol Branch, Div Intramural Res,NIH, Bethesda, MD USA
[7] NIAID, Collaborat Bioinformat Resource, Div Intramural Res, NIH, Bethesda, MD USA
关键词
noroviruses; single-cell RNA seq; transcriptomics; host response; FELINE CALICIVIRUS; REPLICATION; VIRUS; RECEPTOR; LACTOFERRIN; RECOVERY; MODEL; IRON;
D O I
10.1128/jvi.01617-24
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Noroviruses are a major agent of acute gastroenteritis in humans, but host cell requirements for efficient replication in vitro have not been established. We engineered a human intestinal cell line (designated mCD300lf-hCaco2) expressing the murine norovirus (MNV) receptor, mouse CD300lf to become fully permissive for MNV replication. To explore the replicative machinery and host response of these cells, we performed a single-cell RNA sequencing (scRNA-seq) transcriptomics analysis of an MNV infection over time. Marked similarities were observed between certain global features of MNV infection in human cells compared to those previously reported in mouse cells by whole population transcriptomics such as downregulation of ribosome biogenesis, mitochondrial dysfunction, and cell cycle preference for G1. Our scRNA-seq analysis allowed further resolution of an infected cell population into distinct clusters with varying levels of viral RNA and interferon-stimulated gene ISG15 transcripts. Cells with high viral replication displayed downregulated ribosomal protein small (RPS) and large (RPL) genes and mitochondrial complexes I, III, IV, and V genes during exponential viral propagation. Ferritin subunit genes FTL and FTH1 were also downregulated during active MNV replication, suggesting that inhibition of iron metabolism may increase replication efficiency. Consistent with this, transcriptional activation of these genes with ferric ammonium citrate and overexpression of FTL lowered virus yields. Comparative studies of cells that support varying levels of norovirus replication efficiency, as determined by scRNA-seq may lead to improved human cell-based culture systems and effective viral interventions. IMPORTANCE Human noroviruses cause acute gastroenteritis in all age groups. Vaccines and antiviral drugs are not yet available, in part, because it is difficult to propagate the viruses causing human disease in standard laboratory cell culture systems. In contrast, a norovirus found in mice [murine norovirus (MNV)] replicates efficiently in murine-based cell culture and has served as a model system. In this study, we established a new human intestinal cell line that was genetically modified to express the murine norovirus receptor so that the human cells became permissive to murine norovirus infection. We then defined the host response to MNV infection in the engineered human cell line at a single-cell resolution and identified cellular genes associated with the highest levels of MNV replication. This study may lead to the improvement of the current human norovirus cell culture systems and help to identify norovirus-host interactions that could be targeted for antiviral drugs.
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页数:24
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