ArticleCurrent pharmaceutical design2012
Removal of the tag from His-tagged ILYd4, a human CD59 inhibitor, significantly improves its physical properties and its activity.
Article in Current pharmaceutical design, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 12 citations in OpenAlex.
- Engineering Self-Assembling Protein Nanoparticles for Therapeutic Delivery.Bioconjugate chemistry · 2022Review
- Modulation of Endolysin LysECD7 Bactericidal Activity by Different Peptide Tag Fusion.Biomolecules · 2020Article
- How Does Complement Affect Hematological Malignancies: From Basic Mechanisms to Clinical Application.Frontiers in immunology · 2020Review
- Rapid degradation of the complement regulator, CD59, by a novel inhibitor.The Journal of biological chemistry · 2014Article
- Protein engineering to target complement evasion in cancer.FEBS letters · 2014Review
Corrections and comments
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Authors and funding
14 authors at 4 institutions in 2 countries.
Funding
Abstract
Complement dependent cytotoxicity (CDC) significantly contributes to Rituximab (RTX) and Ofatumumab (OFA) efficacies in the treatment of B-cell non-Hodgkin's lymphoma (NHL) and chronic lymphocytic leukemia (CLL). Human CD59 (hCD59) is a key complement regulatory protein that restricts the formation of the membrane attack complex and thereby inhibits CDC. hCD59 is an important determinant of the sensitivity of NHL and CLL to RTX and OFA treatment. Recently, we developed a specific and potent hCD59 inhibitor, His-tagged ILYd4, which consists of 30 amino acid sequences extending from the N-terminus of ILYd4. Our previously published results indicate that His-tagged ILYd4 can be used as a lead candidate to further develop a potential therapeutic adjuvant for RTX and OFA treatment of RTX-resistant NHL and CLL. However, these studies were conducted using ILYd4 tagged on the N-terminus with 30 additional amino acids (AA) containing 6 X His used for immobilized metal affinity chromatograph. As a further step towards the development of ILYd4-based therapeutics, we investigated the impact of the removal of this extraneous sequence on the anti-hCD59 activity. In this paper, we report the generation and characterization of tag-free ILYd4. We demonstrate that tag-free ILYd4 has over threefold higher anti-hCD59 activities than the His-tagged ILYd4. The enhanced RTX-mediated CDC effect on B-cell malignant cells comes from tag-free ILYd4's improved functionality and physical properties including better solubility, reduced tendency to aggregation, and greater thermal stability. Therefore, tag-free ILYd4 is a better candidate for the further development for the clinical application.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.