دورية أكاديمية

Effective Treatment of Human Breast Carcinoma Xenografts with Single-Dose 211 At-Labeled Anti-HER2 Single-Domain Antibody Fragment.

التفاصيل البيبلوغرافية
العنوان: Effective Treatment of Human Breast Carcinoma Xenografts with Single-Dose 211 At-Labeled Anti-HER2 Single-Domain Antibody Fragment.
المؤلفون: Feng Y; Department of Radiology, Duke University Medical Center, Durham, North Carolina., Meshaw R; Department of Radiology, Duke University Medical Center, Durham, North Carolina., Zhao XG; Department of Radiology, Duke University Medical Center, Durham, North Carolina., Jannetti S; Department of Radiology, Duke University Medical Center, Durham, North Carolina., Vaidyanathan G; Department of Radiology, Duke University Medical Center, Durham, North Carolina., Zalutsky MR; Department of Radiology, Duke University Medical Center, Durham, North Carolina zalut001@mc.duke.edu.
المصدر: Journal of nuclear medicine : official publication, Society of Nuclear Medicine [J Nucl Med] 2023 Jan; Vol. 64 (1), pp. 124-130. Date of Electronic Publication: 2022 May 26.
نوع المنشور: Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't
اللغة: English
بيانات الدورية: Publisher: Society of Nuclear Medicine Country of Publication: United States NLM ID: 0217410 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1535-5667 (Electronic) Linking ISSN: 01615505 NLM ISO Abbreviation: J Nucl Med Subsets: MEDLINE
أسماء مطبوعة: Publication: Reston, VA : Society of Nuclear Medicine
Original Publication: [Chicago, Ill.] : S.N. Turiel & Assoc.
مواضيع طبية MeSH: Single-Domain Antibodies*/therapeutic use , Single-Domain Antibodies*/metabolism , Breast Neoplasms*/radiotherapy , Breast Neoplasms*/metabolism, Humans ; Animals ; Mice ; Female ; Heterografts ; Receptor, ErbB-2/metabolism ; Cell Line, Tumor ; Treatment Outcome
مستخلص: Single-domain antibody fragments (sdAbs) are attractive for targeted α-particle therapy, particularly with 211 At, because of their rapid accumulation in tumor and clearance from normal tissues. Here, we evaluate the therapeutic potential of this strategy with 5F7 and VHH_1028-2 sdAbs that bind with high affinity to domain IV of human epidermal growth factor receptor type 2 (HER2). Methods: The HER2-specific sdAbs and HER2-irrelevant VHH_2001 were labeled using N -succinimidyl-3- 211 At-astato-5-guanidinomethyl benzoate ( iso - 211 At-SAGMB). The cytotoxicity of iso- 211 At-SAGMB-5F7 and iso- 211 At-SAGMB-VHH_2001 were compared on HER2-expressing BT474 breast carcinoma cells. Three experiments in mice with subcutaneous BT474 xenografts were performed to evaluate the therapeutic effectiveness of single doses of iso- 211 At-SAGMB-5F7 (0.7-3.0 MBq), iso- 211 At-SAGMB-VHH_1028 (1.0-3.0 MBq), and iso- 211 At-SAGMB-VHH_1028 and iso- 211 At-SAGMB-VHH_2001 (∼1.0 MBq). Results: Clonogenic survival of BT474 cells was reduced after exposure to iso- 211 At-SAGMB-5F7 (D 0  = 1.313 kBq/mL) whereas iso- 211 At-SAGMB-VHH_2001 was ineffective. Dose-dependent tumor growth inhibition was observed with 211 At-labeled HER2-specific 5F7 and VHH_1028 but not with HER2-irrelevant VHH_2001. At the 3.0-MBq dose, complete tumor regression was seen in 3 of 4 mice treated with iso- 211 At-SAGMB-5F7 and 8 of 11 mice treated with iso- 211 At-SAGMB-VHH_1028; prolongation in median survival was 495% and 414%, respectively. Conclusion: Combining rapidly internalizing, high-affinity HER2-targeted sdAbs with the iso- 211 At-SAGMB residualizing prosthetic agent is a promising strategy for targeted α-particle therapy of HER2-expressing cancers.
(© 2023 by the Society of Nuclear Medicine and Molecular Imaging.)
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فهرسة مساهمة: Keywords: 211At; HER2; nanobody; radiopharmaceutical therapy; single-domain antibody fragment; α-emitter
المشرفين على المادة: 0 (Single-Domain Antibodies)
EC 2.7.10.1 (Receptor, ErbB-2)
تواريخ الأحداث: Date Created: 20220526 Date Completed: 20230106 Latest Revision: 20230703
رمز التحديث: 20231215
مُعرف محوري في PubMed: PMC9841253
DOI: 10.2967/jnumed.122.264071
PMID: 35618478
قاعدة البيانات: MEDLINE
الوصف
تدمد:1535-5667
DOI:10.2967/jnumed.122.264071