PMID- 29450576 OWN - NLM STAT- MEDLINE DCOM- 20181217 LR - 20190701 IS - 1619-7089 (Electronic) IS - 1619-7070 (Print) IS - 1619-7070 (Linking) VI - 45 IP - 8 DP - 2018 Jul TI - ImmunoPET imaging of CD38 in murine lymphoma models using (89)Zr-labeled daratumumab. PG - 1372-1381 LID - 10.1007/s00259-018-3941-3 [doi] AB - PURPOSE: CD38 is considered a potential biomarker for multiple myeloma (MM) and has shown a strong link with chronic lymphocytic leukemia due to high and uniform expression on plasma cells. In vivo evaluation of CD38 expression may provide useful information about lesion detection and prognosis of treatment in MM. In this study, immunoPET imaging with (89)Zr-labeled daratumumab was used for differentiation of CD38 expression in murine lymphoma models to provide a potential non-invasive method for monitoring CD38 in the clinic. METHODS: Daratumumab was radiolabeled with (89)Zr (t(1/2) = 78.4 h) via conjugation with desferrioxamine (Df). After Western blot (WB) was used to screen CD38 expression in five lymphoma cell lines, flow cytometry and cellular binding assays were performed to test the binding ability of labeled or conjugated daratumumab with CD38 in vitro. PET imaging and biodistribution studies were performed to evaluate CD38 expression after injection of (89)Zr-Df-daratumumab. (89)Zr-Df-IgG was also evaluated as a non-specific control group in the Ramos model. Finally, CD38 expression in tumor tissues was verified by histological analysis. RESULTS: Using WB screening, the Ramos cell line was found to express the highest level of CD38 while the HBL-1 cell line had the lowest expression. Df-conjugated and (89)Zr-labeled daratumumab displayed similar high binding affinities with Ramos cells. PET imaging of (89)Zr-Df-daratumumab showed a high tumor uptake of up to 26.6 +/- 8.0 %ID/g for Ramos at 120 h post-injection, and only up to 6.6 +/- 2.9 %ID/g for HBL-1 (n = 4). Additionally, (89)Zr-Df-IgG demonstrated a low tumor uptake in the Ramos model (only 4.3 +/- 0.8 %ID/g at 120 h post-injection). Ex vivo biodistribution studies showed similar trends with imaging results. Immunofluorescence staining of tumor tissues verified higher CD38 expression of Ramos than that of HBL-1. CONCLUSIONS: The role of (89)Zr-Df-daratumumab was investigated for evaluating CD38 expression in lymphoma models non-invasively and was found to be to a promising imaging agent of CD38-positive hematological diseases such as MM in future clinical applications. FAU - Kang, Lei AU - Kang L AD - Department of Nuclear Medicine, Peking University First Hospital, Beijing, 100034, China. AD - Department of Radiology, University of Wisconsin - Madison, Madison, WI, 53705, USA. FAU - Jiang, Dawei AU - Jiang D AD - Department of Radiology, University of Wisconsin - Madison, Madison, WI, 53705, USA. AD - Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Laboratory of Evolutionary Theranostics, School of Biomedical Engineering, Health Science Center, Shenzhen University, Nanhai Ave 3688, Shenzhen, 518060, China. FAU - England, Christopher G AU - England CG AD - Department of Medical Physics, University of Wisconsin - Madison, Madison, WI, 53705, USA. FAU - Barnhart, Todd E AU - Barnhart TE AD - Department of Medical Physics, University of Wisconsin - Madison, Madison, WI, 53705, USA. FAU - Yu, Bo AU - Yu B AD - Department of Radiology, University of Wisconsin - Madison, Madison, WI, 53705, USA. FAU - Rosenkrans, Zachary T AU - Rosenkrans ZT AD - School of Pharmacy, University of Wisconsin - Madison, Madison, WI, 53705, USA. FAU - Wang, Rongfu AU - Wang R AD - Department of Nuclear Medicine, Peking University First Hospital, Beijing, 100034, China. FAU - Engle, Jonathan W AU - Engle JW AD - Department of Medical Physics, University of Wisconsin - Madison, Madison, WI, 53705, USA. FAU - Xu, Xiaojie AU - Xu X AD - Department of Medical Molecular Biology, Beijing Institute of Biotechnology, Beijing, 100850, China. miraclexxj@126.com. FAU - Huang, Peng AU - Huang P AD - Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Laboratory of Evolutionary Theranostics, School of Biomedical Engineering, Health Science Center, Shenzhen University, Nanhai Ave 3688, Shenzhen, 518060, China. peng.huang@szu.edu.cn. FAU - Cai, Weibo AU - Cai W AUID- ORCID: 0000-0003-4641-0833 AD - Department of Radiology, University of Wisconsin - Madison, Madison, WI, 53705, USA. wcai@uwhealth.org. AD - Department of Medical Physics, University of Wisconsin - Madison, Madison, WI, 53705, USA. wcai@uwhealth.org. AD - School of Pharmacy, University of Wisconsin - Madison, Madison, WI, 53705, USA. wcai@uwhealth.org. AD - University of Wisconsin Carbone Cancer Center, Madison, WI, 53705, USA. wcai@uwhealth.org. LA - eng GR - 125246-RSG-13-099-01-CCE/American Cancer Society/International GR - JCYJ20160422091238319/Basic Research Program of Shenzhen/International GR - 1R01CA169365/EB/NIBIB NIH HHS/United States GR - 1R01EB021336/NH/NIH HHS/United States GR - 81401465/National Natural Science Foundation of China/International GR - P30 CA014520/CA/NCI NIH HHS/United States GR - Z171100001117024/Beijing Nova Program/International GR - 81441051/National Natural Science Foundation of China/International GR - T32 CA009206/CA/NCI NIH HHS/United States GR - P30CA014520/NH/NIH HHS/United States GR - T32CA009206/NH/NIH HHS/United States GR - R01 CA169365/CA/NCI NIH HHS/United States GR - 51573096/National Natural Science Foundation of China/International GR - R01 EB021336/EB/NIBIB NIH HHS/United States GR - JCYJ20170412111100742/Basic Research Program of Shenzhen/International GR - Z141107002514159/Beijing Capital Special Development Application Program/International PT - Journal Article DEP - 20180215 PL - Germany TA - Eur J Nucl Med Mol Imaging JT - European journal of nuclear medicine and molecular imaging JID - 101140988 RN - 0 (Antibodies, Monoclonal) RN - 0 (Radioisotopes) RN - 4Z63YK6E0E (daratumumab) RN - C6V6S92N3C (Zirconium) RN - EC 3.2.2.6 (ADP-ribosyl Cyclase 1) RN - NTM296JU95 (Zirconium-89) SB - IM MH - ADP-ribosyl Cyclase 1/*metabolism MH - Animals MH - Antibodies, Monoclonal/*pharmacokinetics MH - Cell Line, Tumor MH - Lymphoma/*diagnostic imaging MH - Mice MH - Mice, Nude MH - Positron-Emission Tomography MH - Radioisotopes MH - Tissue Distribution MH - Zirconium PMC - PMC5994170 MID - NIHMS932278 OTO - NOTNLM OT - 89Zr OT - B-cell lymphoma OT - CD38 OT - Cancer OT - Daratumumab OT - ImmunoPET OT - Positron emission tomography (PET) COIS- Conflict of Interest: The authors declare that they have no conflict of interest. EDAT- 2018/02/17 06:00 MHDA- 2018/12/18 06:00 PMCR- 2019/07/01 CRDT- 2018/02/17 06:00 PHST- 2017/10/19 00:00 [received] PHST- 2018/01/04 00:00 [accepted] PHST- 2018/02/17 06:00 [pubmed] PHST- 2018/12/18 06:00 [medline] PHST- 2018/02/17 06:00 [entrez] PHST- 2019/07/01 00:00 [pmc-release] AID - 10.1007/s00259-018-3941-3 [pii] AID - 10.1007/s00259-018-3941-3 [doi] PST - ppublish SO - Eur J Nucl Med Mol Imaging. 2018 Jul;45(8):1372-1381. doi: 10.1007/s00259-018-3941-3. Epub 2018 Feb 15.