Hepatitis B virus hijacks MRE11-RAD50-NBS1 complex to form its minichromosome. by Kaitao Zhao, Jingjing Wang, Zichen Wang, Mengfei Wang, Chen Li, Zaichao Xu, Qiong Zhan, Fangteng Guo, Xiaoming Cheng, Yuchen Xia

“…However, MRN knockdown after HBV infection showed no effect on viral replication, which indicated that MRN complex inhibited the formation of cccDNA without affecting its stability or transcriptional activity. …”
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Exploring Echinacea angustifolia for anti-viral compounds against Zika virus RNA-dependent RNA polymerase: a computational study by Mai M. El-Daly, Leena H. Bajrai, Thamir A. Alandijany, Isra M. Alsaady, Hattan S. Gattan, Meshari M. Alhamdan, Vivek Dhar Dwivedi, Esam I. Azhar

“…This study explores the potential of compounds from Echinacea angustifolia (E. angustifolia) to inhibit the activity of ZIKV’s RNA-dependent RNA polymerase (RDRP), a key enzyme in the viral replication process and an ideal candidate for antiviral therapy. …”
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CD8+ T cells from SIV elite controller macaques recognize Mamu-B*08-bound epitopes and select for widespread viral variation. by John T Loffredo, Thomas C Friedrich, Enrique J León, Jason J Stephany, Denise S Rodrigues, Sean P Spencer, Alex T Bean, Dominic R Beal, Benjamin J Burwitz, Richard A Rudersdorf, Lyle T Wallace, Shari M Piaskowski, Gemma E May, John Sidney, Emma Gostick, Nancy A Wilson, David A Price, Esper G Kallas, Helen Piontkivska, Austin L Hughes, Alessandro Sette, David I Watkins

“…SIV replication was rapidly controlled with the reappearance of CD8+ cells, implicating that these cells actively suppress viral replication in ECs.<h4>Methods and findings</h4>Here we show that three ECs in that study made at least seven robust CD8+ T cell responses directed against novel epitopes in Vif, Rev, and Nef restricted by the MHC class I molecule Mamu-B*08. …”
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scRNA seq of an F1 cross of Marek’s disease resistant and susceptible chickens identifies allele specific expression signatures enriched in transcription modulators by Deborah Velez-Irizarry, Hans Cheng, Cari Hearn

“…SNPs with ASE also mapped genes important for an adequate immune response including GNLY (cytotoxic activity) and PDIA3 (component of MHC class I peptide loading complex), and genes known to promote viral replication (MCM5 and EIF3M). These results show that functional variants associated with susceptibility to MD may have a bigger impact in subsets of immune cell types, and by characterizing the transcriptomes of these subtypes we can unravel molecular signatures specific to MD genomic resistance.…”
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Evaluation of Melongosides as Potential Inhibitors of NS2B-NS3 Activator-Protease of Dengue Virus (Serotype 2) by Using Molecular Docking and Dynamics Simulation Approach by Partha Biswas, Ommay Hany Rumi, Dhrubo Ahmed Khan, Md Nasir Ahmed, Nusratun Nahar, Rownak Jahan, Md Nazmul Hasan Zilani, Tridib K Paul, Anamul Hasan, Tohmina Afroze Bondhon, Khoshnur Jannat, Md Nazmul Hasan, Mohammed Rahmatullah

“…The present study aimed to determine, in silico, the binding energies of the steroidal saponins, melongosides, to NS2B-NS3 activator protease of DENV-2, which plays an essential role in the viral replication. The blind molecular docking studies carried out gave binding energies (ΔG = −kcal/mol) of melongosides B, F, G, H, N, O, and P as 7.7, 8.2, 7.6, 7.8, 8.3, 8.0, and 8.0, respectively. …”
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Single-cell transcriptomics of bronchoalveolar lavage during PRRSV infection with different virulence by Byeonghwi Lim, Seung-Chai Kim, Hwan-Ju Kim, Jae-Hwan Kim, Young-Jun Seo, Chiwoong Lim, Yejee Park, Sunirmal Sheet, Dahye Kim, Do-Hwan Lim, Kyeongsoon Park, Kyung-Tai Lee, Won-Il Kim, Jun-Mo Kim

“…In highly virulent infection, faster viral replication results in an earlier peak lung-damage time point, marked by significant interstitial pneumonia, a significant decrease in macrophages, and an influx of lymphocytes. …”
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Lipopolysaccharide Increases Immune Activation and Alters T Cell Homeostasis in SHIVB’WHU Chronically Infected Chinese Rhesus Macaque by Gao-Hong Zhang, Run-Dong Wu, Hong-Yi Zheng, Xiao-Liang Zhang, Ming-Xu Zhang, Ren-Rong Tian, Guang-Ming Liu, Wei Pang, Yong-Tang Zheng

“…LPS administration affected the virus/host equilibrium by elevating the levels of viral replication and activating T lymphocytes. LPS induced upregulation of CD8+ naïve T cells and downregulated the number of CD4+ and CD8+ T effector memory cells. …”
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Distal protein-protein interactions contribute to nirmatrelvir resistance by Eric M. Lewandowski, Xiujun Zhang, Haozhou Tan, Aiden Jaskolka-Brown, Navita Kohaal, Aliaksandra Frazier, Jesper J. Madsen, Lian M. C. Jacobs, Jun Wang, Yu Chen

“…., P252L, T21I, L50F), which restore the fitness of viral replication. To probe the role of the non-active site mutations in fitness rescue, here we use an Mpro triple mutant (L50F/E166A/L167F) that confers nirmatrelvir drug resistance with a viral fitness level similar to the wild-type. …”
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Characterization and functional analysis of chicken hnRNP protein by Ke Wang, Manzi Huang, Qinghua Zeng, Huansheng Wu

“…These insights into the role of chicken hnRNPs in viral replication and immune response could pave the way for new therapeutic strategies against IBDV.…”
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G-quadruplex-forming small RNA inhibits coronavirus and influenza A virus replication by Ryoya Sekine, Kouki Takeda, Tsukasa Suenaga, Satsuki Tsuno, Takumi Kaiya, Maki Kiso, Seiya Yamayoshi, Yoshihide Takaku, Shiho Ohno, Yoshiki Yamaguchi, Seiichi Nishizawa, Kazuhiro Sumitomo, Kazufumi Ikuta, Teru Kanda, Yoshihiro Kawaoka, Hidekazu Nishimura, Shusuke Kuge

“…Unlike previous antiviral strategies that target the G-quadruplexes of the viral genome, we now show that excess exogenous G-quadruplex-forming small RNA displaces genomic RNA from ribonucleoprotein, effectively inhibiting viral replication. The approach has the potential to facilitate the creation of versatile middle-molecule antivirals featuring lipid nanoparticle-free delivery.…”
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Th2 Regulation of Viral Myocarditis in Mice: Different Roles for TLR3 versus TRIF in Progression to Chronic Disease by Eric D. Abston, Michael J. Coronado, Adriana Bucek, Djahida Bedja, Jaewook Shin, Joseph B. Kim, Eunyong Kim, Kathleen L. Gabrielson, Dimitrios Georgakopoulos, Wayne Mitzner, DeLisa Fairweather

“…Although TLR3- or TRIF-deficient mice developed similarly worse acute CVB3 myocarditis and viral replication compared to control mice, disease was significantly worse in TRIF compared to TLR3-deficient mice. …”
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hnRNPH1 Inhibits Influenza Virus Replication by Binding Viral RNA by Ruixue Xue, Danqi Bao, Tianxin Ma, Shiqi Niu, Zihua Wu, Xuehua Lv, Yunxiang Zhang, Guanlong Xu, Dawei Yan, Zhifei Zhang, Xue Pan, Minghao Yan, Qiaoyang Teng, Chunxiu Yuan, Zejun Li, Qinfang Liu

“…Given that a large number of progeny viral RNA occupies the nucleus, whether there is any host protein located in the nucleus that recognizes the viral RNA and inhibits the viral replication remains largely unknown. In this study, to explore the role of hnRNPH1 in influenza virus infection, we knocked down and over-expressed the hnRNPH1 proteins in 293T cells, then infected the cells with the influenza virus. …”
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Fusion to Flaviviral Leader Peptide Targets HIV-1 Reverse Transcriptase for Secretion and Reduces Its Enzymatic Activity and Ability to Induce Oxidative Stress but Has No Major Eff... by Anastasia Latanova, Stefan Petkov, Yulia Kuzmenko, Athina Kilpeläinen, Alexander Ivanov, Olga Smirnova, Olga Krotova, Sergey Korolev, Jorma Hinkula, Vadim Karpov, Maria Isaguliants, Elizaveta Starodubova

“…Reverse transcriptase (RT) is a key enzyme in viral replication and susceptibility to ART and a crucial target of immunotherapy against drug-resistant HIV-1. …”
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Severe COVID-19 disease is associated with genetic factors affecting plasma ACE2 receptor and CRP concentrations by Verena Vogi, David Haschka, Lukas Forer, Simon Schwendinger, Verena Petzer, Stefan Coassin, Ivan Tancevski, Thomas Sonnweber, Judith Löffler-Ragg, Elisabeth Puchhammer-Stöckl, Marianne Graninger, Dominik Wolf, Florian Kronenberg, Johannes Zschocke, Emina Jukic, Günter Weiss

“…Furthermore, specific single nucleotide polymorphisms (SNPs) that contribute to either of the two Polygenic Scores predicting basal CRP levels are associated with different traits that represent risk factors for COVID-19 disease initiation (ACE2 receptor, viral replication) and progression (CRP). We suggest that genetically determined enforced CRP formation may contribute to strengthening of innate immune responses and better initial pathogen control thereby reducing the risk of subsequent hyperinflammation and adverse course of COVID-19.…”
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Structural insights into dynamics of the BMV TLS aminoacylation by Wen Yang, Ran Yi, Jing Yao, Yongxiang Gao, Shanshan Li, Qingguo Gong, Kaiming Zhang

“…Abstract Brome Mosaic Virus (BMV) utilizes a tRNA-like structure (TLS) within its 3’ untranslated region to mimic host tRNA functions, aiding aminoacylation and viral replication. This study explores the structural dynamics of BMV TLS interacting with tyrosyl-tRNA synthetase (TyrRS) during aminoacylation. …”
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Isoleucine at position 137 of haemagglutinin acts as a mammalian adaptation marker of H9N2 avian influenza virus by Weiwei Ma, Chenyang Ren, Lin Shi, Bo Meng, Yali Feng, Ying Zhang

“…Further studies revealed that the threonine (T) to I mutation at HA position 137 enhanced viral replication in vitro and in vivo. Moreover, the HA-T137I substitution in H9N2 avian influenza virus increased the guinea pig transmission efficiency. …”
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Evaluation of the Expression of Infection-Related Long Noncoding RNAs among COVID-19 Patients: A Case-Control Study by Zahra Firoozi, Elham Mohammadisoleimani, Farzaneh Bagheri, Atefeh Taheri, Babak Pezeshki, Mohammad Mehdi Naghizadeh, Abdolreza Daraei, Jalal Karimi, Yousef Gholampour, Yaser Mansoori, Zahra Montaseri

“…The considerable higher expression of ISR, ATV, and HEAL lncRNAs and the significant area under curve (AUC) in ROC curve demonstrate that these RNAs probably have a potential role in controlling the host innate immune responses and regulate the viral replication of SARS-CoV-2. However, these assumptions need further in vitro and in vivo investigations to be confirmed.…”
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Molecular-genetic pathways of hepatitis C virus regulation of the expression of cellular factors PREB and PLA2G4C, which play an important role in virus replication by E. L. Mishchenko, A. A. Makarova, E. A. Antropova, A. S. Venzel, T. V. Ivanisenko, P. S. Demenkov, V. A. Ivanisenko

“…Identifying the host factors, exploring their role in HCV RNA replication, and studying viral effects on their expression is essential for understanding the mechanisms of viral replication and developing novel, effective curative approaches. …”
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Antiviral Activity and Underlying Mechanism of <i>Moslae herba</i> Aqueous Extract for Treating SARS-CoV-2 by Yan Feng, Qiong Ge, Jian Gao, Zhuoying Wu, Yunyi Zhang, Haiyan Mao, Beibei Wu, Changping Xu

“…AEMH exerted anti-SARS-CoV-2 effects by inhibiting viral replication and reducing cell death caused by infection (IC₅₀ is 170 μg/mL for omicron strain). …”
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Immunologic and inflammatory consequences of SARS-CoV-2 infection and its implications in renal disease by Hiam Naiditch, Michael R. Betts, H. Benjamin Larman, Moshe Levi, Avi Z. Rosenberg

“…Delayed transcription of Type I and Type III interferons by SARS-CoV-2 may lead to early disinhibition of viral replication. Cytokines such as interleukin-1 (IL-1), IL-6, IL-12, and tumor necrosis factor α (TNFα), some of which may be produced through mechanisms involving nuclear factor kappa B (NF-κB), likely contribute to the hyperinflammatory state in patients with severe COVID-19. …”
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