Objective: To prepare monoclonal antibodies (mAbs) against S100A9, and characterize these antibodies' properties for functional studies.
Methods: We amplified cDNA fragment of S100A9 from adult human liver sample, then constructed the vectors pGEX-4T-1-S100A9 and pET-32a-S100A9 for protein expression. The S100A9 protein fused respectively with the His-tag and GST-tag were expressed in E.coli and purified for immunizing mice as antigen and hybridoma screening, respectively. After hybriodma screening, the titer of mAbs was determined by ELISA and the specificity was identified by Western blotting and indirect immunofluorescence technique.
Results: Both GST-tagged and His-tagged S100A9 fusion proteins were successfully constructed and expressed in E.coli. Eighteen hybridoma cell strains secreting S100A9 mAbs were obtained, of which 15 showed strong positive reaction but 3 showed weak positive reaction to the recombinant protein in Western blotting. Two hybridoma cell strains were capable of binding to S100A9 native protein in tumor tissue interstitial fluid.
Conclusion: We successfully prepared the mAbs against S100A9 protein, which provide the useful tool for further study on biological function and clinical detection of S100A9.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Uptake of rituximab biosimilars in Medicare and Medicaid in 2019-2022.
Am J Manag Care
December 2024
Department of Health Outcomes Research and Policy, Auburn University Harrison College of Pharmacy, 4306D Walker Building, Auburn University, Auburn, AL 36849-5506. Email:
Objectives: This study evaluated the uptake and costs of 3 biosimilars among Medicare and Medicaid populations for 2019 to 2022: rituximab-abbs (Truxima), rituximab-pvvr (Ruxience), and rituximab-arrx (Riabni).
Study Design: A retrospective, descriptive study.
Methods: Using the annually aggregated, product-level utilization and cost data of biologic and biosimilar rituximab products from CMS drug spending data, total claims and costs (reimbursement and out of pocket) for all rituximab products were identified and extracted from Medicare Part B, Medicare Part D, and Medicaid.
Virus Protein-Specific Immune Responses in Selective Depletion of Lymphocyte Populations Using Monoclonal Antibodies in Bolivian Squirrel Monkeys ().
Viral Immunol
January 2025
Department of Comparative Medicine, The University of Texas MD Anderson Cancer Center, Bastrop, Texas, USA.
The increasing use of immune suppressive monoclonal antibodies in the treatment of organ transplant recipients and patients with oncologic, neurological, and autoimmune diseases can lead to serious morbidity and mortality from the reactivation of viral agents that persist in humans. The squirrel monkey polyomaviruses are naturally found in Bolivian squirrel monkeys (SQM) and may be a useful model for the study of polyomavirus-associated pathogenesis and experimental treatment and prevention strategies. Two diverse groups of squirrel monkeys were given, a single dose of an anti-B cell antibody (rituximab) resulting in complete depletion of B cells (CD20+), while an anti-CD8 monoclonal antibody (7 pt-3F9) resulted in a transient depletion of CD8+ lymphocytes compared with control animals (group with no infusion with either of the monoclonal antibodies).
View Article and Find Full Text PDFSubcutaneous Administration of Therapeutic Monoclonal Antibody Drug Products Using a Syringe in Blinded Clinical Trials: Advances and Key Aspects Related to Blinding/Matching/Masking Strategies for Placebo Formulation.
Mol Pharm
January 2025
Drug Product Development-Steriles, Medicine Development and Supply, GSK, 1250 S. Collegeville Road, Collegeville, Pennsylvania 19426, United States.
Therapeutic monoclonal antibody (mAb) drug products are increasingly used to treat both chronic and acute diseases. These mAb drug products are often developed for subcutaneous (SC) injection to simplify dosing compared with intravenous (IV) infusion. For SC injection, the mAb liquid drug product is typically filled in a vial for use with a syringe or in a prefilled syringe, which can then be assembled into a safety syringe device or an autoinjector for direct administration.
View Article and Find Full Text PDFInhibition of Bruton's tyrosine kinase restricts neuroinflammation following intracerebral hemorrhage.
Theranostics
January 2025
Department of Neurology, Tianjin Neurological Institute, Tianjin Institute of Immunology, State Key Laboratory of Experimental Hematology, International Joint Laboratory of Ocular Diseases, Ministry of Education, Haihe Laboratory of Cell Ecosystem, Laboratory of Post-Neuroinjury Neurorepair and Regeneration in Central Nervous System Tianjin & Ministry of Education, Tianjin Medical University General Hospital, Tianjin 300052, China.
Intracerebral hemorrhage (ICH) is a devastating form of stroke with a lack of effective treatments. Following disease onset, ICH activates microglia and recruits peripheral leukocytes into the perihematomal region to amplify neural injury. Bruton's tyrosine kinase (BTK) controls the proliferation and survival of various myeloid cells and lymphocytes.
View Article and Find Full Text PDFEfficacy analysis of rituximab in treating patients with primary membranous nephropathy dependent on calcineurin inhibitors.
Front Immunol
January 2025
Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China.
Background: This study evaluated the efficacy of rituximab (RTX) in primary membranous nephropathy (PMN) patients with incomplete remission and drug dependence after long-term use of calmodulin inhibitors (CNIs). It aims for complete clinical and immunological remission, and cessation of CNI dependence.
Methods: Thirty-six patients were enrolled in the study with two groups: drug-dependent and partial remission or immune non-remission group.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!