ArticleInternational journal of oncology2018
Preclinical evaluation of a novel engineered recombinant human anti-CD44v6 antibody for potential use in radio-immunotherapy.
Article in International journal of oncology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Peptide-based inhibition of CD44v6 renders liver carcinomas more susceptible to therapeutic intervention.Journal of molecular medicine (Berlin, Germany) · 2025Article
- Utilizing CD44v6 and V600EBRAF-mutation for in vitro targeted combination therapy of thyroid carcinomas.Heliyon · 2023Article
- Review
- Article
- A review of advances in the last decade on targeted cancer therapy usingAmerican journal of nuclear medicine and molecular imaging · 2021Review
- Enhancing the therapeutic effects of in vitro targeted radionuclide therapy of 3D multicellular tumor spheroids using the novel stapled MDM2/X-p53 antagonist PM2.EJNMMI research · 2020Article
- Immune-Based Approaches for the Treatment of Pediatric Malignancies.Annual review of cancer biology · 2020Article
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Authors and funding
5 authors.
Funding
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Abstract
CD44v6 is overexpressed in a variety of cancers, rendering it a promising target for radio-immunotherapy (RIT). In this study, we have characterized a novel engineered recombinant monoclonal anti-CD44v6 antibody, AbN44v6, and assessed its potential for use in RIT using either 177Lu or 131I as therapeutic radionuclides. In vitro affinity and specificity assays characterized the binding of the antibody labeled with 177Lu, 125I or 131I. The therapeutic effects of 177Lu-AbN44v6 and 131I-AbN44v6 were investigated using two in vitro 3D tumor models with different CD44v6 expression. Finally, the normal tissue biodistribution and dosimetry for 177Lu-AbN44v6 and 125I-AbN44v6/131I-AbN44v6 were assessed in vivo using a mouse model. All AbN44v6 radioconjugates demonstrated CD44v6-specific binding in vitro. In the in vitro 3D tumor models, dose-dependent therapeutic effects were observed with both 177Lu-AbN44v6 and 131I-AbN44v6, with a greater significant therapeutic effect observed on the cells with a higher CD44v6 expression. Biodistribution experiments demonstrated a greater uptake of 177Lu-AbN44v6 in the liver, spleen and bone, compared to 125I-AbN44v6, whereas 125I-AbN44v6 demonstrated a longer circulation time. In dosimetric calculations, the critical organs for 177Lu-AbN44v6 were the liver and spleen, whereas the kidneys and red marrow were considered the critical organs for 131I-AbN44v6. The effective dose was in the order of 0.1 mSv/MBq for both labels. In conclusion, AbN44v6 bound specifically and with high affinity to CD44v6. Furthermore, in vitro RIT demonstrated growth inhibition in a CD44v6-specific activity-dependent manner for both radioconjugates, demonstrating that both 177Lu-AbN44v6 and 131I-AbN44v6 may be promising RIT candidates. Furthermore, biodistribution and dosimetric analysis supported the applicability of both conjugates for RIT. The CD44v6-specific therapeutic effects observed with radiolabeled AbN44v6 in the 3D tumor models in vitro, combined with the beneficial dosimetry in vivo, render AbN44v6 a potential candidate for RIT.
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