Biologicals最新文献

{"title":"Histological and functional exploration of platelet activity post-SARS-CoV-2 vaccination","authors":"Muhammad Zuhair Yusuf ,&nbsp;Tahira Ghulam ,&nbsp;Zuneera Akram ,&nbsp;Syeda Pinar Nasir ,&nbsp;Rena Zaman","doi":"10.1016/j.biologicals.2025.101845","DOIUrl":"10.1016/j.biologicals.2025.101845","url":null,"abstract":"<div><div>The rapid spread of SARS-CoV-2 prompted swift deployment of early-stage vaccines. These vaccines were crucial for controlling the infection, but concerns about adverse effects, particularly thrombotic complications, arose. One major issue was the potential impact of vaccination on platelet activity. Conflicting findings in the literature, caused by differences in methodologies and platelet activation markers, contributed to uncertainty regarding the risk of thrombus formation after vaccination.</div><div>This study aimed to assess platelet activity before and after SARS-CoV-2 vaccination to evaluate thrombotic risk. Platelet function was analysed <em>in vitro</em>, using aggregation assays and histological examinations of platelet spreading. Key metrics, including adhesion, surface area coverage, and actin cytoskeletal changes, were measured upon platelet exposure to fibrinogen. Platelet aggregation was also assessed using agonists, like collagen, ADP, epinephrine, and ristocetin.</div><div>Platelet aggregation was influenced by ADP, epinephrine, and ristocetin in both pre- and post-vaccination samples. Analysis showed reduced platelet adhesion and spread area. However, actin cytoskeletal analysis revealed a post-vaccination increases in stress fibres and actin nodules, attaining a maximal response similar to pre-vaccination levels. The study identified modulation of the platelets to become active, but no significant correlation of platelet activity changes leading to a higher incidence of thrombotic events was found.</div></div>","PeriodicalId":55369,"journal":{"name":"Biologicals","volume":"91 ","pages":"Article 101845"},"PeriodicalIF":1.5,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144138154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A meta-analysis to re-evaluate the sensitivity and specificity of FMDV NSP ELISA tests","authors":"Beyhan Sareyyüpoğlu ,&nbsp;Ozlem Ilk","doi":"10.1016/j.biologicals.2025.101846","DOIUrl":"10.1016/j.biologicals.2025.101846","url":null,"abstract":"<div><div>Foot-and-mouth disease (FMD) serosurveillance is used as one of the disease control instruments. For this goal, it is necessary to differentiate infected animals from the vaccinated ones using non-structural protein (NSP) enzyme-linked immunoassays (ELISA). Various NSP ELISA have been developed. However, their sensitivity and specificity have shown variable results. Therefore, a meta-analysis was conducted to re-evaluate the sensitivity and specificity of these ELISAs. Experimental data were analyzed using R version 4.2.1, employing the rma.mv function in {metafor} package, and the impute covariance_matrix function from the {clubSandwich} package. Commercial kits, the highest sensitivity (0.82, 0.83) and specificity (0.97) were observed in Kit 1 and 3 groups. Differences in performance measures due to animal profiles were not statistically justified. In-house kits, performance measures varied by animal species and NSP protein. Specifically, sensitivity and specificity were lower in pigs (0.62 and 0.81) compared to cattle (0.93 and 0.97) and sheep (0.94 and 0.98) with 3ABC protein. No significant differences were found between sheep and cattle. Additionally, assays using protein 2C showed significantly lower sensitivity and specificity compared to those using protein 3ABC. The highest diagnostic measures were observed in cattle and sheep tested with the 3AB protein, followed by 3B and 3ABC proteins.</div></div>","PeriodicalId":55369,"journal":{"name":"Biologicals","volume":"91 ","pages":"Article 101846"},"PeriodicalIF":1.5,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144138153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Molecular characteristics of feline coronavirus in South Korea, 2016–2023","authors":"Sung-Hee Kim,&nbsp;Kyoung-Ki Lee,&nbsp;Ilseob Lee,&nbsp;Go-Eun Shin,&nbsp;Ji-Ung Jang,&nbsp;Yoon-A Joo,&nbsp;Kyunghyun Lee,&nbsp;Ah-Young Kim,&nbsp;Bok-Kyung Ku,&nbsp;Hye-Young Jeoung","doi":"10.1016/j.biologicals.2025.101844","DOIUrl":"10.1016/j.biologicals.2025.101844","url":null,"abstract":"<div><div>Feline coronavirus is highly contagious and ubiquitous in cat populations. FCoV is classified into two serotypes, types I and II, each including two biotypes, feline enteric coronavirus (FECV) and feline infectious peritonitis virus (FIPV)In this study, FCoV detected in samples collected by the Animal and Plant Quarantine Agency from 2016 to 2023, and analyzed genetic diversity of FCoV for currently circulation in Korea. In a total of 925 cats, FCoV was detected in 294 cats (31.8 %). Among the 73 cases with a final diagnosis, 47.9 % (35/73) were finally found to be FIPV, and 52.1 % (38/73) were confirmed to be FECV. Of the 294 FCoV-positive cases, 24 partial S genes were successfully sequenced. Partial S2 subunit sequencing indicated that types I and II accounted for 91.7 % (22/24) and 8.3 % (2/24) of the cases, respectively. One case, 23D103, contained a different six-nucleotide deletion in the S gene. Phylogenetic analysis of types I and II showed clear discrimination based on the S gene. Types I and II also exhibited 63.2–99.8 % nucleotide acid homology with the S gene of the reference strains. This study provides updated information regarding the current infection status and molecular characteristics of FCoV in Korea.</div></div>","PeriodicalId":55369,"journal":{"name":"Biologicals","volume":"91 ","pages":"Article 101844"},"PeriodicalIF":1.5,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vaccination and surveillance for high pathogenicity avian influenza in poultry—current situation and perspectives","authors":"Nancy C. Sajjadi ,&nbsp;Celia Abolnik ,&nbsp;Francesca Baldinelli ,&nbsp;Ian Brown ,&nbsp;Angus Cameron ,&nbsp;Sjaak de Wit ,&nbsp;Madhur Dhingra ,&nbsp;Olivier Espeisse ,&nbsp;Jean Luc Guerrin ,&nbsp;Timm Harder ,&nbsp;Jeremy Ho ,&nbsp;Tze-Hoong Chua ,&nbsp;Khaled Hussein ,&nbsp;Nicholas Lyons ,&nbsp;Isabella Monne ,&nbsp;Yukitake Okamuro ,&nbsp;Damian Tago Pacheco ,&nbsp;Gounalan Pavade ,&nbsp;Nicolas Poncon ,&nbsp;Teguh Yodiantara Prajitno ,&nbsp;Arjan Stegeman","doi":"10.1016/j.biologicals.2025.101840","DOIUrl":"10.1016/j.biologicals.2025.101840","url":null,"abstract":"&lt;div&gt;&lt;div&gt;The International Alliance for Biological Standardization (IABS), in collaboration with the World Organization for Animal Health (WOAH) convened a hybrid meeting on 22–23 October 2024 at the WOAH Headquarters (HQ) in Paris, France to discuss the global state of vaccination and surveillance for high pathogenicity avian influenza (HPAI) in poultry. The primary objective of the meeting was to advance vaccination acceptance to both control virus spread and reduce disease. Vaccination is increasingly recognized as a tool to complement biosecurity, movement controls and stamping-out of infected flocks. However, concerns persist regarding the risk of undetected, sustained transmission (silent infection) in vaccinated flocks as a result of inadequate surveillance. This has contributed to both vaccination hesitancy and trade barriers. The meeting aimed to assess the current state of the art regarding HPAI surveillance programs in vaccinated populations and their effectiveness. Representatives of multiple stakeholders were invited to share their experiences and perspectives on the use of vaccination and accompanying surveillance to control the growing H5N1 panzootic and its global impact. Several conclusions and recommendations emerged as essential to advancing the acceptance of vaccination strategies. These included (1) the utility of quantitative reverse transcriptase polymerase chain reaction (RT-qPCR) as a sensitive, specific and economical tool to detect virus in vaccinated populations, (2) regular testing of dead birds within a flock as a highly effective method for early detection of outbreaks in vaccinated flocks and demonstrating freedom from infection and, (3) the importance of collecting information on circulating field strains in the selection of candidate vaccine antigens to ensure adequate efficacy. Testing sentinel birds was deemed less effective for surveillance and serological testing of vaccinated birds was considered more useful for assessing immunity levels than for determining the infection status of a flock. There was broad agreement on the need to standardize surveillance outcomes in terms of accepted confidence levels to promote safe and fair trade. However, it was acknowledged that context and pragmatic considerations will shape the development of situation specific plans, which must be statistically valid, scientifically sound, economically feasible and operationally sustainable for both governments and industry. Concomitantly, it was recommended that trade policies tied to vaccination and surveillance should be based solely on science and risks. To this end, enforcement of existing international rules and resolution of disputes are considered a shared responsibility. Peer reviewed publications were proposed as a central mechanism for developing the stronger guidelines needed to facilitate fair trade agreements and enable implementation of global vaccination programs. Rapid dissemination of information, consistent messag","PeriodicalId":55369,"journal":{"name":"Biologicals","volume":"91 ","pages":"Article 101840"},"PeriodicalIF":1.5,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143937011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A comprehensive review of current diagnostic techniques for Monkeypox virus detection","authors":"Salma Madihi,&nbsp;Abdelouaheb Benani","doi":"10.1016/j.biologicals.2025.101841","DOIUrl":"10.1016/j.biologicals.2025.101841","url":null,"abstract":"<div><div>Monkeypox (Mpox) is an infectious disease caused by the Monkeypox virus (MPXV), initially confined to Central and Western Africa, but now spreading globally. The clinical manifestations are often atypical in the current Mpox outbreak, in addition to the critical challenges in MPXV typing and the difficulty in reliably distinguishing between clades. Therefore, diagnosing Mpox based on clinical signs and symptoms only can be challenging. Current treatment is not specific to MPXV and primarily involves supportive care and antiviral drugs that inhibit viral DNA synthesis, such as Tecovirimat and Brincidofovir. This review provides a comprehensive overview of current laboratory techniques for MPXV detection, encompassing both direct and indirect diagnostic methods. It highlights recent advancements, evaluates the strengths and limitations of each approach, and proposes innovative strategies to enhance global diagnostic capabilities, including the potential roles of computational drug discovery and immunoinformatics in designing multi-epitope vaccines targeting MPXV and its variants. The most effective measure to control MPXV spread remains vaccination, timely diagnosis, isolation of infected individuals, maintaining personal hygiene, and avoiding contact with contaminated persons, objects, and animal waste.</div></div>","PeriodicalId":55369,"journal":{"name":"Biologicals","volume":"91 ","pages":"Article 101841"},"PeriodicalIF":1.5,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143916769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to “Multiple factors shape technology transfer for the development and manufacture of vaccines in Latin America and the Caribbean” [Biologicals 90 (2025) 101826]","authors":"Nelson Campos ,&nbsp;María de los Ángeles Cortés ,&nbsp;Tomás A. Pippo ,&nbsp;Judit Rius ,&nbsp;James Fitzgerald ,&nbsp;Andrés Couve","doi":"10.1016/j.biologicals.2025.101830","DOIUrl":"10.1016/j.biologicals.2025.101830","url":null,"abstract":"","PeriodicalId":55369,"journal":{"name":"Biologicals","volume":"90 ","pages":"Article 101830"},"PeriodicalIF":1.5,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143904471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aims and Scope/Editorial Board/Publishing Details","authors":"","doi":"10.1016/S1045-1056(25)00026-0","DOIUrl":"10.1016/S1045-1056(25)00026-0","url":null,"abstract":"","PeriodicalId":55369,"journal":{"name":"Biologicals","volume":"90 ","pages":"Article 101835"},"PeriodicalIF":1.5,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143904129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Construction and evaluation of a novel Stx2a-based immunotoxin against epidermal growth factor receptor (EGFR)","authors":"Negar Akhzari ,&nbsp;Jafar Amani ,&nbsp;Golnaz Tajadod ,&nbsp;Shohreh Zare Karizi ,&nbsp;Sedigheh Arbabian","doi":"10.1016/j.biologicals.2025.101833","DOIUrl":"10.1016/j.biologicals.2025.101833","url":null,"abstract":"<div><div>Immunotoxins (ITs) are chimeric proteins that combine the targeting specificity of a monoclonal antibody or antibody fragment with the cytotoxic properties of a toxin. They offer a promising strategy for cancer therapy by selectively delivering cytotoxic payloads to tumor cells. The epidermal growth factor receptor (EGFR) is frequently overexpressed in various cancers, making it an attractive target for IT-based therapies.</div><div>In this study, we designed and constructed a novel IT composed of a single-chain variable fragment (scFv) derived from Panitumumab, a humanized monoclonal antibody targeting EGFR, and the Shiga toxin A subunit 2 (Stx2a), a potent cytotoxic agent. The IT was designed using computational tools to optimize the linker region between the scFv and Stx2a domains. The recombinant IT was expressed in a prokaryotic host and purified to homogeneity.</div><div>The cytotoxic activity of the IT was evaluated in vitro against human colorectal carcinoma (HCT-116) and human embryonic kidney (HEK293) cells. The IT demonstrated significant cytotoxicity against HCT-116 cells, while exhibiting minimal toxicity to non-target cells. To enhance the delivery and efficacy of the IT, we encapsulated it in chitosan nanoparticles. The nanoparticle-based formulation showed improved cellular uptake and enhanced cytotoxicity compared to the free IT.</div><div>Our findings suggest that the designed IT has the potential to be a promising therapeutic agent against EGFR-expressing cancers. Further studies are warranted to evaluate its efficacy in vivo and to optimize its formulation for clinical applications.</div></div>","PeriodicalId":55369,"journal":{"name":"Biologicals","volume":"91 ","pages":"Article 101833"},"PeriodicalIF":1.5,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Expression, purification, and immunogenicity study of human papillomavirus type 52 virus-like particles produced in Hansenula polymorpha","authors":"Sheila Chairunnisa ,&nbsp;Apon Zaenal Mustopa ,&nbsp;Budiman Bela ,&nbsp;Rosyida Khusniatul Arifah ,&nbsp;Rifqiyah Nur Umami ,&nbsp;Moh Egy Rahman Firdaus ,&nbsp;Nurlaili Ekawati ,&nbsp;Herman Irawan ,&nbsp;Shasmita Irawan ,&nbsp;Maritsa Nurfatwa ,&nbsp;Ai Hertati ,&nbsp;Sri Swasthikawati ,&nbsp;Ela Novianti ,&nbsp;Arizah Kusumawati ,&nbsp;Huda Salahudin Darusman","doi":"10.1016/j.biologicals.2025.101831","DOIUrl":"10.1016/j.biologicals.2025.101831","url":null,"abstract":"<div><div>Human papillomavirus type 52 (HPV 52) infection is epidemiologically predominant in low-middle income countries in South-East Asia and remains a threat for global health. This study aims to assess the immunogenicity of prophylactic vaccine candidate formulated from HPV 52 L1 virus-like particles (VLPs). A codon-optimized and N-terminally truncated HPV 52 L1 gene was cloned using pHIPZ4 plasmid and expressed in <em>Hansenula polymorpha</em>. Protein purification was performed by one-step cation exchange chromatography and was confirmed by sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) and Western blot. The VLPs formation was confirmed by transmission electron microscopy (TEM) prior to formulation using AlPO₄ adjuvant and immunization of BALB/c mouse. The mouse sera were analyzed by enzyme-linked immunosorbent assay (ELISA), and green fluorescent protein (GFP) pseudovirion-based neutralization assay was performed for immunogenicity study. The purified HPV 52 L1 protein was successfully assembled into VLPs and showed a recovery yield of 51.76 %. The L1 antigen demonstrated a high antibody titer production, suggesting that the vaccine formulation induced humoral immune response in mouse model. Moreover, the antibody from mouse sera were able to neutralize HPV 52 pseudovirus infections in human embryonic kidney 293 (HEK293) cells. These findings suggest that the production of HPV 52 L1 VLPs using <em>H. polymorpha</em> expression system induces immune response, thus potentially can be developed as alternative HPV vaccine.</div></div>","PeriodicalId":55369,"journal":{"name":"Biologicals","volume":"90 ","pages":"Article 101831"},"PeriodicalIF":1.5,"publicationDate":"2025-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143824533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mass spectrometry analysis of bovine tuberculins - 3R potential in batch potency testing","authors":"Elisabeth Balks ,&nbsp;Jan-Hendrik Trösemeier ,&nbsp;Michael D. Mühlebach ,&nbsp;Andreas Reuter","doi":"10.1016/j.biologicals.2025.101825","DOIUrl":"10.1016/j.biologicals.2025.101825","url":null,"abstract":"<div><div>Tuberculin purified protein derivatives (tuberculin PPDs) are heat-treated, protein-enriched products of lysed mycobacteria. Tuberculin PPDs reveal a delayed hypersensitivity in individuals earlier sensitized to mycobacteria and are thereby used to detect tuberculosis. For batch potency testing of tuberculins, the European Pharmacopoeia advises intradermal injection of products into previously sensitized guinea pigs. Batch potency is reflected by the size of the resulting skin lesions as compared to a reference tuberculin. This procedure is quite compromising and results are highly variable, often requiring test repeats. In a proof of concept study, we evaluated the suitability of a combination of liquid chromatography and mass spectrometry (LC-MS^E) to record qualitative protein profiles of bovine PPD tuberculin concentrates. Six batches of bovine PPD tuberculin concentrates from three manufacturers and the WHO International Standard for PPD of <em>Mycobacterium bovis</em> tuberculin were studied. In total, 35 proteins were identified by LC-MS^E followed by MS database search. Eight proteins were consistently found in all batches of all bovine tuberculin PPD products. Our results suggest that LC-MS^E can be used for the analysis of PPD tuberculin concentrates and that it can be further developed in the future into quantitative MS methods for batch analysis, i.e. consistency testing.</div></div>","PeriodicalId":55369,"journal":{"name":"Biologicals","volume":"90 ","pages":"Article 101825"},"PeriodicalIF":1.5,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143783633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}