Viral immunology最新文献

{"title":"Bovine Leukemia Virus Prevalence in Women with Breast Cancer and Premalignant Breast Lesions.","authors":"Muhammed Furkan Kürkçü, Gaye Ebru Şeker, Duray Şeker, Ayfer Bakır","doi":"10.1177/08828245261445779","DOIUrl":"https://doi.org/10.1177/08828245261445779","url":null,"abstract":"<p><p>The potential role of bovine leukemia virus (BLV), a zoonotic deltaretrovirus, in human breast carcinogenesis remains controversial, and evidence from seroepidemiological studies is limited. This study aimed to evaluate BLV IgG seroprevalence in women with malignant breast cancer and benign breast lesions and to explore the possible association between BLV exposure and breast cancer development. In this cross-sectional comparative study, a total of 124 women aged ≥18 years who presented to Ankara Etlik City Hospital between May and July 2024 were included. The malignant group comprised 82 women with histopathologically confirmed breast cancer, while the control group included 42 women with benign breast lesions. Serum samples were analyzed for BLV-specific IgG antibodies using a commercial enzyme-linked immunosorbent assay kit. Overall BLV IgG seroprevalence was 12.9% (16/124), with rates of 13.4% in the malignant group and 11.9% in the benign group, showing no statistically significant difference (<i>p</i> = 0.812). In the malignant group, BLV IgG seropositive patients were significantly older than seronegative patients, and seropositivity increased with age (<i>p</i> < 0.01). Although higher BLV IgG seropositivity were observed in invasive mucinous carcinoma cases, this association did not reach statistical significance in logistic regression analysis. Hematological parameters were evaluated to investigate potential systemic immune or inflammatory responses associated with BLV exposure; however, no significant associations were identified between BLV IgG seropositivity and these parameters. These findings suggest that BLV exposure, as reflected by humoral immune response, is not directly associated with breast cancer development but may represent cumulative or long-term exposure. Further large-scale, multicenter studies integrating molecular and serological approaches are warranted to clarify the potential role of BLV in human breast cancer etiology.</p>","PeriodicalId":23665,"journal":{"name":"Viral immunology","volume":" ","pages":"8828245261445779"},"PeriodicalIF":1.2,"publicationDate":"2026-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147782847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Maternal SARS-CoV-2 Antibodies in Mink Kits: Dynamics of Passive Immunity and Implications for Silent Farm-Wide Transmission Following Virus Re-Incursion.","authors":"Zoi Thomou, Chrysostomos I Dovas, Theofilos Poutahidis, Anagnostis Argiriou, Evangelia Mouchtaropoulou, Konstantinos Zaralis, Jacobus Johannes Hendrik Koenen, Serafeim C Chaintoutis","doi":"10.1177/08828245261444539","DOIUrl":"https://doi.org/10.1177/08828245261444539","url":null,"abstract":"<p><p>Maternal antibodies protect mink kits early in life, but their duration and impact on subsequent SARS-CoV-2 exposure remain unclear. We longitudinally characterized passive immunity in kits born to mothers previously infected with lineage B.1.1.305 on a commercial farm in Greece and related antibody kinetics to a later heterologous virus incursion. Breeder animals showed a 93.3% seropositivity rate after the initial outbreak. On day 20 postpartum, 81.4% of mothers and 69.8% of kits were positive for SARS-CoV-2 nucleocapsid (N)-specific antibodies by enzyme-linked immunosorbent assay (ELISA); a maternal S/P% >160.1% was associated with kit seropositivity at the same time-point (area under the curve 0.985; sensitivity 90%; specificity 100%). Kit seropositivity declined to 2.4% by D*56, consistent with the rapid waning of maternally derived antibodies. On D*87, 97.6% of kits had seroconverted, and 90.0% of mothers were seropositive; Analysis of oropharyngeal swabs by reverse transcription-quantitative polymerase chain reaction (RT-qPCR) and next generation sequencing (NGS) confirmed introduction of lineage B.1.177. No clinical signs or excess mortality were observed during this reinfection event. These data demonstrate efficient passive transfer, rapid loss of detectable antibodies by ∼8 weeks, and farm-wide seroconversion after re-exposure to a new lineage. The absence of disease despite widespread seroconversion suggests maternally acquired immunity may have mitigated illness but did not prevent infection. Silent SARS-CoV-2 circulation can therefore occur in partially immune mink farms, with important implications for biosecurity and targeted SARS-CoV-2 surveillance. To our knowledge, this is the first longitudinal study to track the dynamics of maternally derived SARS-CoV-2 antibodies in mink kits and link them to subsequent exposure outcomes.</p>","PeriodicalId":23665,"journal":{"name":"Viral immunology","volume":" ","pages":"8828245261444539"},"PeriodicalIF":1.2,"publicationDate":"2026-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147782754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vitamin D and Zinc in SARS-CoV-2 Infection: Immunomodulatory Mechanisms and Clinical Evidence.","authors":"Md Ekhlas Uddin, Md Asaduzzaman, Tasnim Ahmad, Sohel Ahmed, Sukalyan Kumar Kundu, Mohammad Mehedi Hasan Khan, Mohammad Mosaddequl Islam, Md Mosharraf Hossen, Md Ramjan Sheikh, Md Mominul Islam Sheikh","doi":"10.1177/08828245261426982","DOIUrl":"10.1177/08828245261426982","url":null,"abstract":"<p><p>The coronavirus disease 2019 (COVID-19) pandemic, caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has resulted in approximately 778 million reported cases and over 7 million deaths worldwide as of August 2025 (WHO COVID-19 Dashboard), predominantly due to variable acute and chronic lung infections accompanied by inflammatory responses within the pulmonary tract and vasculature. Despite ongoing research, no definitive cure has been identified. Preventive measures, including vaccines and monoclonal antibody-based interventions, have been developed to protect vulnerable populations, and hundreds of therapeutic candidates have been evaluated worldwide. Complementing these strategies, vitamin D and zinc (Zn) supplementation have emerged as promising, accessible adjunctive strategies due to their immunomodulatory and anti-inflammatory properties. This review synthesizes current experimental, clinical, and epidemiological evidence on the roles of vitamin D and Zn in modulating immune responses relevant to SARS-CoV-2 infection. Available data suggest that adequate vitamin D and Zn status may support immune function, reduce excessive inflammation, and potentially mitigate disease severity, particularly in deficient individuals. However, clinical trial outcomes remain heterogeneous. Overall, vitamin D and Zn supplementation may be considered supportive, adjunctive preventive measures. Further well-designed randomized controlled trials are required to define their optimal use in COVID-19 prevention and management.</p>","PeriodicalId":23665,"journal":{"name":"Viral immunology","volume":" ","pages":"97-112"},"PeriodicalIF":1.2,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147391123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Production and Evaluation of Anti-Sera Against Severe Acute Respiratory Syndrome Coronavirus 2 Variants Using a Syrian Hamster Model.","authors":"Yong Jun Choi, Bo Min An, Sang Won O, Jeong-Hyun Nam, Eun Ju Lee, Il-Hwan Kim, Jee Eun Rhee, Eun-Jin Kim","doi":"10.1177/08828245261424872","DOIUrl":"10.1177/08828245261424872","url":null,"abstract":"<p><p>The continuous emergence of novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants continues to influence the global coronavirus 2019 (COVID-19) pandemic. Even vaccinated individuals or those with prior infections may experience reinfection, depending on the immune evasion capacity of the circulating variants. Therefore, analyses of variant characteristics and immune escape are critical for informing public health policy. However, as COVID-19 has been downgraded in terms of infectious disease classification, the availability of patient sera has become increasingly limited, restricting the timely immunological analyses of emerging variants. To address this challenge, we established an antiserum production and neutralization assay system using a hamster model and demonstrated the utility of this animal serum-based approach. In this study, antisera against 10 circulating SARS-CoV-2 variants were generated in golden Syrian hamsters, and they showed high titer of humoral and neutralizing antibody using enzyme-linked immunosorbent assay and plaque reduction neutralization test (PRNT) assay. In addition, we compared serum from an unvaccinated patient (<i>n</i> = 1) infected with the BA.5 variant with serum from a BA.5-infected hamster (<i>n</i> = 1). Although the number of comparable samples was limited, the PRNT₅₀ titer patterns in serum from an unvaccinated individual infected with BA.5 and in hamster antisera were similar. These findings indicate that antisera generated in the hamster model can provide timely immunogenicity assessments of newly emerging SARS-CoV-2 variants, thereby contributing to the rapid characterization of variant immune escape and the generation of essential data for future public health preparedness.</p>","PeriodicalId":23665,"journal":{"name":"Viral immunology","volume":" ","pages":"113-117"},"PeriodicalIF":1.2,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147356877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development and Evaluation of a Baculovirus-Expressed VP1-Based Immunoassay for BK Polyomavirus Serology and Preliminary Seroepidemiological Applications.","authors":"Negar Hemmati, Bahman Abedi Kiasari, Mohammedreza Hemmati","doi":"10.1177/08828245261424899","DOIUrl":"10.1177/08828245261424899","url":null,"abstract":"<p><p>BK polyomavirus (BKPyV) is highly prevalent and clinically relevant in immunocompromised populations, underscoring the need for reliable serological tools to support epidemiological monitoring and clinical follow-up. This study aimed to generate a recombinant VP1-based enzyme-linked immunosorbent assay (ELISA) using a baculovirus-Sf9 insect cell system and to explore its application in a human serum cohort. Recombinant VP1 was produced by baculovirus-mediated expression, purified by nickel-nitrilotriacetic acid affinity chromatography, and used to establish an indirect IgG ELISA. A plasmid-based transient expression approach in Sf9 cells was evaluated only as a feasibility experiment and did not yield sufficient VP1 for assay development. Analytical performance was assessed using a polymerase chain reaction (PCR)-defined serum panel (<i>n</i> = 30), and the assay was subsequently applied to 149 sera with unknown BKPyV status. Baculovirus-mediated expression generated high-purity VP1 with an average yield of approximately 1.55 mg/mL from a 10 mL culture. PCR-confirmed positive sera showed markedly higher optical density values than PCR-negative sera, with very good analytical discrimination in this small validation set (area under the curve = 0.996). In the cohort analysis, overall seroreactivity was 89.7%, antibody reactivity increased with age, and higher ELISA signals were observed in renal transplant and hemodialysis patients than in healthy individuals. Detectable reactivity in young children may reflect early exposure or passive maternal antibodies. These findings indicate that insect cell-derived BKPyV VP1 is a suitable antigen for serological assays and a practical platform for preliminary seroepidemiological applications, which require confirmation in larger independent validation cohorts.</p>","PeriodicalId":23665,"journal":{"name":"Viral immunology","volume":" ","pages":"118-128"},"PeriodicalIF":1.2,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147285369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prevalence of SEN Virus-D and SEN Virus-H Among Hemodialysis Patients in Diyala Province.","authors":"Ibtihal Hameed Mohsin, Ansam Dawod Salman, Luma Ghaeb Alsaadi","doi":"10.1177/08828245261438006","DOIUrl":"https://doi.org/10.1177/08828245261438006","url":null,"abstract":"<p><p>The SEN virus (SENV), a DNA virus that has been linked to blood transfusion, is a major cause of post-transfusion hepatitis. SENV-D and SENV-H are non-A to E hepatitis viruses. The present study was conducted to investigate the prevalence of SENV-D/H among dialysis patients and blood donors as control group in Diyala province/Iraq. This study includes 120 participants: 80 dialysis patients who have been attending the Ibn-Sina Dialysis Center-Diyala Directorate of Health were previously diagnosed with the disease, and 40 individuals as controls were selected at random from blood donors at the Central Blood Bank during the period from 1/5/2025 to 30/11/2025. Full information had been taken directly from the patients, and the information had been arranged in an informative formula sheet, which includes age and gender. All study subjects were screened for nested polymerase chain reaction. The SENV-D prevalence was 10 (12.50%) and 0.00% for dialysis patients and controls, respectively, and SENV-H was 5 (6.25%) and 1 (2.50%) for dialysis patients and controls, respectively. The SENV co-infection rate of genotypes D and H was 3 (7.50%) in the dialysis group, and no cases in the control group were found. A very strong association was found between the distinct SENV genotypes and Hepatitis B virus (HBV) or Hepatitis C virus (HCV) status. Positivity for SENV was also correlated with high serum Aspartate Aminotransferase (AST) and Alanine aminotransferase (ALT). SENV-D and SENV-H were more prevalent among hemodialysis patients than in normal blood donors. The presence of SEN-V in both groups indicates its categorization as a blood-borne virus and suggests risk for transmission by blood exposure.</p>","PeriodicalId":23665,"journal":{"name":"Viral immunology","volume":" ","pages":"8828245261438006"},"PeriodicalIF":1.2,"publicationDate":"2026-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147575398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Expression of Concern: \"Variations in the S and P Regions of the Hepatitis B Virus Genome Under Immunosuppression <i>In Vitro</i> and <i>In Vivo</i>\".","authors":"","doi":"10.1177/08828245261428999","DOIUrl":"https://doi.org/10.1177/08828245261428999","url":null,"abstract":"","PeriodicalId":23665,"journal":{"name":"Viral immunology","volume":" ","pages":"8828245261428999"},"PeriodicalIF":1.2,"publicationDate":"2026-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147487684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Single-Cell and Mendelian Randomization Analyses Identify Key Genes Common to COVID-19 and Multiple Sclerosis.","authors":"Shuping Chen, Jun Ruan, Sikai Cheng, Huifang Zheng, Tianyu Chang, Guichun Bao, Zijing Zhu, Xinglin Li, Wei Zhao, Kunwen Zheng","doi":"10.1177/08828245261426986","DOIUrl":"https://doi.org/10.1177/08828245261426986","url":null,"abstract":"<p><p>The pathophysiology of multiple sclerosis (MS) bears notable similarities to the dysregulated inflammatory response occurring during coronavirus disease 2019 (COVID-19) infection. B cells play a pivotal role among immune cells in the pathogenesis of both these diseases. Consequently, clarifying the molecular mechanism underlying B cell function in COVID-19 and MS is of great significance for formulating more efficient treatment strategies. A comprehensive analysis integrating single-cell RNA sequencing (scRNA-seq), genome-wide association study, and expression quantitative trait locus data from patients with COVID-19 and MS was performed. Gene set enrichment analysis revealed pathways and functional roles associated with the key genes, while pseudotime analysis tracked their expression patterns across different B cell developmental trajectories. The results of scRNA-seq analysis showed that, in comparison with the healthy control group, the proportion of B cells rose in patients with COVID-19 and those with MS. Through differential expression analysis and Mendelian randomization analysis, <i>DR1</i>, <i>IKZF3</i>, and <i>RUVBL2</i> were identified as risk factors for both COVID-19 and MS, whereas <i>ANAPC5</i> was characterized as a protective factor against these two conditions. The findings of the pseudotime analysis indicated that only <i>IKZF3</i> had differential expression across different branches of B cells. <i>IKZF3</i>'s role in promoting immune inflammation and inhibiting metabolism could potentially be linked to the onset and comorbidity of COVID-19 and MS. This emphasizes not only the possible interaction mechanisms between these two diseases but also their clinical significance.</p>","PeriodicalId":23665,"journal":{"name":"Viral immunology","volume":" ","pages":"8828245261426986"},"PeriodicalIF":1.2,"publicationDate":"2026-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147499817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"LPS and IL-4 Stimulation Favor Murine Norovirus Infection of B Cells.","authors":"Carlos Emilio Miguel-Rodríguez, Jesús Iván Antonio-Buendia, Ana Lorena Gutierrez-Escolano, Leopoldo Santos-Argumedo","doi":"10.1177/08828245261429121","DOIUrl":"https://doi.org/10.1177/08828245261429121","url":null,"abstract":"<p><p>Noroviruses are single-stranded positive-polarity RNA viruses classified in the family Caliciviridae. Human noroviruses (HuNoVs) are a leading cause of acute viral gastroenteritis worldwide. Despite their ability to infect various epithelial and nonepithelial cell types, establishing robust <i>in vitro</i> culture systems for HuNoVs remains challenging. As a result, murine norovirus 1 (MNV-1) has become a widely used model for investigating norovirus biology and pathogenesis, due to its ability to replicate efficiently in primary dendritic cells and macrophages. Although different B-cell lines are susceptible to MNV-1 infection, the susceptibility of primary B lymphocytes has been poorly characterized. Here, we demonstrate that MNV-1 infects primary B lymphocytes, with infection levels increased by prior stimulation with lipopolysaccharide and interleukin-4. The enhanced infection does not appear to result from increased virion binding but instead to an increased cellular permissiveness. These findings provide new insights into the cellular tropism of MNV-1 and suggest that the activation status of B-cell influences their susceptibility to infection. This model may improve our understanding of norovirus-host-cell interactions in adaptive immune cells and could aid in the development of more representative <i>in vitro</i> systems for studying norovirus pathogenesis.</p>","PeriodicalId":23665,"journal":{"name":"Viral immunology","volume":" ","pages":"8828245261429121"},"PeriodicalIF":1.2,"publicationDate":"2026-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147373085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Serological Markers and EBV DNA of Epstein-Barr Virus Infection in a Health Examination Cohort from Chongqing, China.","authors":"Zhuojun Ou, Cong Wang, Peng Zhao, Lanxin Peng, Jing Tan, Yu He, Yu Xiang","doi":"10.1177/08828245261426990","DOIUrl":"https://doi.org/10.1177/08828245261426990","url":null,"abstract":"<p><p>This study aimed to characterize Epstein-Barr virus (EBV) serological markers and EBV DNA profiles in a healthy examination cohort from Chongqing, China, and to examine their associations with routine hematological and biochemical parameters. This retrospective cross-sectional study included adults undergoing routine health examinations in Chongqing between 2019 and 2024. EBV serology (EA-IgA and VCA-IgA) was assessed in 4,535 individuals using ELISA, and EBV DNA was measured in 6,508 individuals by quantitative PCR. Hematological indices and liver and renal function markers were compared across EBV antibody subgroups and EBV DNA status. Multivariable linear regression analyses were performed with adjustment for age and sex. VCA-IgA seroprevalence was significantly higher than EA-IgA (13.38% vs. 6.09%, <i>p</i> < 0.001), with both peaking in the 41-50-year age group. EBV DNA was detected in 7.24% of individuals, with positivity increasing with age (≥61 years: 12.09%) and being higher in males than females (7.81% vs. 6.06%, <i>p</i> = 0.010). Among EBV DNA-positive individuals, 86.17% had low viral loads (<10⁴ copies/mL). After adjustment, EBV seropositivity and EBV DNA positivity were independently associated with statistically significant differences in leukocyte subsets and hepatic and renal markers; however, all median values remained within established clinical reference ranges. EBV infection markers in this inland Chinese health examination population exhibited distinct age- and sex-related distributions and showed independent associations with subtle physiological variations rather than overt pathology. Importantly, EBV serological markers and EBV DNA demonstrated differential association patterns, indicating that they convey complementary and nonredundant biological information in assessing EBV infection status.</p>","PeriodicalId":23665,"journal":{"name":"Viral immunology","volume":" ","pages":"8828245261426990"},"PeriodicalIF":1.2,"publicationDate":"2026-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147356874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}