{"title":"Machine learning can identify an antinuclear antibody pattern that may rule out systemic autoimmune rheumatic diseases","authors":"May Y. Choi","doi":"10.1016/j.jim.2025.113967","DOIUrl":"10.1016/j.jim.2025.113967","url":null,"abstract":"","PeriodicalId":16000,"journal":{"name":"Journal of immunological methods","volume":"544 ","pages":"Article 113967"},"PeriodicalIF":1.6,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145416700","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}
Ti Lu, Md Shafiullah Parvej, Sean K. Whittier, Suhrid Maiti, Zackary K. Dietz, Debaki R. Howlader, Mst Nusrat Zahan, Satabdi Biswas, William D. Picking, Wendy L. Picking
{"title":"A high-throughput multi-species platform using Biolayer Interferometry Immunosorbent Assay (BLI-ISA) as an alternative to indirect ELISA for vaccine development","authors":"Ti Lu, Md Shafiullah Parvej, Sean K. Whittier, Suhrid Maiti, Zackary K. Dietz, Debaki R. Howlader, Mst Nusrat Zahan, Satabdi Biswas, William D. Picking, Wendy L. Picking","doi":"10.1016/j.jim.2025.113980","DOIUrl":"10.1016/j.jim.2025.113980","url":null,"abstract":"<div><div>In vaccine development, the ELISA (Enzyme-Linked Immunosorbent Assay) is commonly used to compare the antibody titers of samples from several treatment groups. This often requires extensive sample preparation, manual labor, and long incubation and processing times. Biolayer Interferometry (BLI) has emerged as an alternative to the ELISA for the detection and quantification of antigen-specific antibodies in biological samples. However, the implementation of BLI as a replacement for the ELISA in vaccine development requires that experimental parameters are established for accurate and reproducible results. Here we give a general protocol for a biolayer interferometry immunosorbent assay (BLI-ISA) for the comparison of antigen-specific antibody levels in treatment group sera that uses secondary antibody binding responses as replacement for ELISA endpoint titers. BLI-ISA provides rapid relative measurements of antigen-specific antibody levels (in nm binding shift), yielding results consistent with ELISA endpoint titers (expressed in ELISA Units), thereby enabling reliable comparison across treatment groups within a fraction of the time required for conventional ELISA.</div></div>","PeriodicalId":16000,"journal":{"name":"Journal of immunological methods","volume":"544 ","pages":"Article 113980"},"PeriodicalIF":1.6,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145102864","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":"Challenges limiting the establishment of standardized clinical cutpoints for antibody tests used in the evaluation of hypersensitivity pneumonitis","authors":"Bethany Schuder, Anne Tebo","doi":"10.1016/j.jim.2025.113954","DOIUrl":"10.1016/j.jim.2025.113954","url":null,"abstract":"","PeriodicalId":16000,"journal":{"name":"Journal of immunological methods","volume":"544 ","pages":"Article 113954"},"PeriodicalIF":1.6,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145412483","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}
Pankaj Kumar , Anna Mammel , Ali Mousavi , Mary Encarnacion , Donald Biehl , Hans Frykman
{"title":"Determining reference values for the ALZPath plasma p-tau217 assay in a large cohort of elderly individuals with normal cognitive function","authors":"Pankaj Kumar , Anna Mammel , Ali Mousavi , Mary Encarnacion , Donald Biehl , Hans Frykman","doi":"10.1016/j.jim.2025.113930","DOIUrl":"10.1016/j.jim.2025.113930","url":null,"abstract":"","PeriodicalId":16000,"journal":{"name":"Journal of immunological methods","volume":"544 ","pages":"Article 113930"},"PeriodicalIF":1.6,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145416925","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}
Nicholas J. Jones, Kim A. Appler, Jodie A. Jarvis, Alexander C. Keyel, April D. Davis
{"title":"Temperature stability of rabies neutralizing antibodies","authors":"Nicholas J. Jones, Kim A. Appler, Jodie A. Jarvis, Alexander C. Keyel, April D. Davis","doi":"10.1016/j.jim.2025.113982","DOIUrl":"10.1016/j.jim.2025.113982","url":null,"abstract":"<div><div>Rabies serology is most importantly done to evaluate immune response following vaccine administration in patients who have been exposed to rabies or are highly likely to be. When detecting antibodies after vaccination it is best to target rabies neutralizing antibodies specifically. Clinical laboratories performing this testing are required to uphold a strict set of standards laid out by federal and state guidelines. Sample integrity throughout the process of testing, from collection to results is of the utmost importance. Samples may experience a wide range of temperature variation depending on how each sample is shipped or handled by the submitter. In order to uphold quality clinical testing it is important to study the stability of rabies neutralizing antibodies across a wide range of temperatures.</div></div>","PeriodicalId":16000,"journal":{"name":"Journal of immunological methods","volume":"544 ","pages":"Article 113982"},"PeriodicalIF":1.6,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145274753","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}
Mengying Lun , Yumei Chen , Hongliang Liu , Yanhua Qi , Aiping Wang , Jingming Zhou
{"title":"Fluorescence immunochromatographic assay based on CdSe/ZnS quantum dots for the detection of OXA-48","authors":"Mengying Lun , Yumei Chen , Hongliang Liu , Yanhua Qi , Aiping Wang , Jingming Zhou","doi":"10.1016/j.jim.2025.113984","DOIUrl":"10.1016/j.jim.2025.113984","url":null,"abstract":"<div><div>The production of carbapenemase is the primary mechanism of bacterial resistance to carbapenem antibiotics. This resistance seriously compromises the efficacy of carbapenem antibiotics in treating infections and poses a significant challenge to clinical anti-infective therapy. Oxacillinase-48 (OXA-48) is a class D carbapenemase, whose genes are usually located on transferable elements and can spread between different strains and genera. Therefore, from the perspective of infection control, effective monitoring and prevention of OXA-48 are imperative. In this study, CdSe/ZnS quantum dots (QDs) were coupled with an anti-OXA-48 monoclonal antibody (mAb) as a fluorescent signal probe to establish a quantum dot-based fluorescent immunochromatographic strip. The test strip contains a Test line (T-line) coated with an anti-OXA-48 monoclonal antibody and a Control line (C-line) coated with Staphylococcus protein A (SPA). Based on a double-antibody sandwich detection mode, it can complete highly sensitive detection of OXA-48 within 10 min. The visual detection limit of this test strip for OXA-48 recombinant protein was 3.13 ng/mL, and there was no cross-reaction with other common carbapenemases (IMP-1, NDM-1, KPC-2, VIM-2, OXA-23). It can be positioned as a rapid and reliable OXA-48 detection tool, providing a novel method for the rapid identification of OXA-48-producing resistant bacterial strains in clinical practice.</div></div>","PeriodicalId":16000,"journal":{"name":"Journal of immunological methods","volume":"544 ","pages":"Article 113984"},"PeriodicalIF":1.6,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145228254","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}
Akpedje S. Dossou, Serena Kang, Tahira Kalhoro, Eduardo Castro Echeverry, Nathan C. Horton
{"title":"Evaluation of the i-Tracker infliximab and i-Tracker anti-infliximab total antibodies ECLIA on the random-access automated analyzer IDS-iSYS for the routine clinical monitoring of infliximab-treated patients","authors":"Akpedje S. Dossou, Serena Kang, Tahira Kalhoro, Eduardo Castro Echeverry, Nathan C. Horton","doi":"10.1016/j.jim.2025.113933","DOIUrl":"10.1016/j.jim.2025.113933","url":null,"abstract":"","PeriodicalId":16000,"journal":{"name":"Journal of immunological methods","volume":"544 ","pages":"Article 113933"},"PeriodicalIF":1.6,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145412970","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":"Isolation of HPRT gene depleted human TK6 lymphoblastoid cell line through gamma irradiation","authors":"P.R. Vivek Kumar , Anila Gopinathan , Deepak Sharma","doi":"10.1016/j.jim.2025.113985","DOIUrl":"10.1016/j.jim.2025.113985","url":null,"abstract":"<div><div>Ionizing radiation induced DNA DSBs can cause large deletions in the human genome. This property may be utilized for gene disruption to create knockout mutants. The X-linked hypoxanthine–guanine phosphoribosyl transferase (<em>HPRT</em>) gene is commonly used as a reporter to evaluate the frequency and molecular nature of somatic mutations in the human population. Mutations at the <em>HPRT</em> locus are measured through a T lymphocyte cloning assay. This assay relies on lymphoblast feeder cells that support T lymphocyte proliferation via cell-to-cell contact and by helping in the expression of functional interleukin-2 receptors. However, the feeder cells must be <em>HPRT</em>-depleted to prevent feeder cell DNA from serving as substrate during molecular analysis of T lymphocyte mutations. To the best of our knowledge, the human lymphoblastoid TK6 cell line available in Indian cell repositories has an intact <em>HPRT</em> gene (<em>HPRT</em>+). In this study, the parent TK6 cell line was subjected to the clastogenic effects of a high dose gamma radiation to isolate TK6 cells with a total deletion of the <em>HPRT</em> locus. The <em>HPRT</em>-depleted cell line (TK6<sub>LLrrL</sub>) was characterized by mPCR for the loss of exons and the extent of the deletion by flanking STS markers analysis. Further, the feeder cell function of TK6<sub>LLrrL</sub> was evaluated by estimating the cloning efficiency of human peripheral blood lymphocytes. Thus, the study demonstrates the potential of low LET gamma radiation to generate gene knockout cell line. The method described here can be applied to various cell types to produce functionally null cell lines for gene-specific studies.</div></div>","PeriodicalId":16000,"journal":{"name":"Journal of immunological methods","volume":"544 ","pages":"Article 113985"},"PeriodicalIF":1.6,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145280376","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}