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Storey CM, Altai M, Bicak M, Veach DR, Lückerath K, Adrian G, McDevitt MR, Kalidindi T, Park JE, Herrmann K, Abou D, Zedan W, Peekhaus N, Klein RJ, Damoiseaux R, Larson SM, Lilja H, Thorek D, Ulmert D. Quantitative In Vivo Imaging of the Androgen Receptor Axis Reveals Degree of Prostate Cancer Radiotherapy Response. Mol Cancer Res 2023; 21:307-315. [PMID: 36608299 PMCID: PMC10355285 DOI: 10.1158/1541-7786.mcr-22-0736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 12/13/2022] [Accepted: 01/03/2023] [Indexed: 01/09/2023]
Abstract
Noninvasive biomarkers for androgen receptor (AR) pathway activation are urgently needed to better monitor patient response to prostate cancer therapies. AR is a critical driver and mediator of resistance of prostate cancer but currently available noninvasive prostate cancer biomarkers to monitor AR activity are discordant with downstream AR pathway activity. External beam radiotherapy (EBRT) remains a common treatment for all stages of prostate cancer, and DNA damage induced by EBRT upregulates AR pathway activity to promote therapeutic resistance. [89Zr]11B6-PET is a novel modality targeting prostate-specific protein human kallikrein 2 (hK2), which is a surrogate biomarker for AR activity. Here, we studied whether [89Zr]11B6-PET can accurately assess EBRT-induced AR activity.Genetic and human prostate cancer mouse models received EBRT (2-50 Gy) and treatment response was monitored by [89Zr]11B6-PET/CT. Radiotracer uptake and expression of AR and AR target genes was quantified in resected tissue.EBRT increased AR pathway activity and [89Zr]11B6 uptake in LNCaP-AR and 22RV1 tumors. EBRT increased prostate-specific [89Zr]11B6 uptake in prostate cancer-bearing mice (Hi-Myc x Pb_KLK2) with no significant changes in uptake in healthy (Pb_KLK2) mice, and this correlated with hK2 protein levels. IMPLICATIONS hK2 expression in prostate cancer tissue is a proxy of EBRT-induced AR activity that can noninvasively be detected using [89Zr]11B6-PET; further clinical evaluation of hK2-PET for monitoring response and development of resistance to EBRT in real time is warranted.
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Affiliation(s)
- Claire M Storey
- Department of Molecular & Medical Pharmacology, University of California Los Angeles (UCLA), Los Angeles, USA
| | - Mohamed Altai
- Division of Oncology and Pathology, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Mesude Bicak
- Hasso Plattner Institute for Digital Health, Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, USA
| | - Darren R Veach
- Department of Radiology, Memorial Sloan Kettering Cancer Center (MSKCC), New York, USA
| | - Katharina Lückerath
- Department of Nuclear Medicine, University Hospital Essen, University of Duisburg-Essen, DKTK, Essen, Germany
| | - Gabriel Adrian
- Division of Oncology and Pathology, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Michael R McDevitt
- Department of Radiology, Memorial Sloan Kettering Cancer Center (MSKCC), New York, USA
| | - Teja Kalidindi
- Department of Radiology, Memorial Sloan Kettering Cancer Center (MSKCC), New York, USA
| | - Julie E Park
- Department of Molecular & Medical Pharmacology, University of California Los Angeles (UCLA), Los Angeles, USA
| | - Ken Herrmann
- Department of Nuclear Medicine, University Hospital Essen, University of Duisburg-Essen, DKTK, Essen, Germany
| | - Diane Abou
- Department of Radiology, Washington University School of Medicine, St. Louis, USA
- Siteman Cancer Center, Washington University School of Medicine, St. Louis, USA
| | - Wahed Zedan
- Division of Oncology and Pathology, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Norbert Peekhaus
- Division of Oncology and Pathology, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Robert J Klein
- Icahn Institute for Genomics and Multiscale Biology, Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, USA
| | - Robert Damoiseaux
- Department of Molecular & Medical Pharmacology, University of California Los Angeles (UCLA), Los Angeles, USA
- California NanoSystems Institute, UCLA, Los Angeles, USA
| | - Steven M Larson
- Department of Radiology, Memorial Sloan Kettering Cancer Center (MSKCC), New York, USA
- Department of Radiology, Weill Cornell Medical College, New York, USA
| | - Hans Lilja
- Genitourinary Oncology Service, Department of Medicine, MSKCC, New York, USA
- Urology Service, Department of Surgery, MSKCC, New York, USA
- Department of Laboratory Medicine, MSKCC, New York, USA
- Department of Translational Medicine, Lund University, Malmö, Sweden
| | - Daniel Thorek
- Department of Radiology, Washington University School of Medicine, St. Louis, USA
- Siteman Cancer Center, Washington University School of Medicine, St. Louis, USA
- Department of Biomedical Engineering, Washington University School of Medicine, St. Louis, USA
| | - David Ulmert
- Department of Molecular & Medical Pharmacology, University of California Los Angeles (UCLA), Los Angeles, USA
- Division of Oncology and Pathology, Department of Clinical Sciences, Lund University, Lund, Sweden
- California NanoSystems Institute, UCLA, Los Angeles, USA
- Department of Urology, Institute of Urologic Oncology, UCLA, Los Angeles, USA
- Jonsson Comprehensive Cancer Center, David Geffen School of Medicine, UCLA, Los Angeles, USA
- Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, UCLA, Los Angeles, USA
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