PET‐CT Imaging of Polymeric Nanoparticle Tumor Accumulation in Patients

IHC Miedema, GJC Zwezerijnen, MC Huisman, Ellen Doeleman, Ron H. J. Mathijssen, Twan Lammers, Qizhi Hu, G* van Dongen, Cristianne Rijcken, DJ Vugts, C. W. Menke

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Several FDA/EMA-approved nanomedicines have demonstrated improved pharmacokinetics and toxicity profiles compared to their conventional chemotherapeutic counterparts. The next step to increase therapeutic efficacy depends on tumor accumulation, which can be highly heterogeneous. A clinical tool for patient stratification is urgently awaited. Therefore, a docetaxel-entrapping polymeric nanoparticle ( 89Zr-CPC634) is radiolabeled, and positron emission tomography/computed tomography (PET/CT) imaging is performed in seven patients with solid tumors with two different doses of CPC634: an on-treatment (containing 60 mg m −2 docetaxel) and a diagnostic (1–2 mg docetaxel) dose (NCT03712423). Pharmacokinetic half-life for 89Zr-CPC634 is mean 97.0 ± 14.4 h on-treatment, and 62.4 ± 12.9 h for the diagnostic dose (p = 0.003). At these doses accumulation is observed in 46% and 41% of tumor lesions with a median accumulation in positive lesions 96 h post-injection of 4.94 and 4.45%IA kg −1 (p = 0.91), respectively. In conclusion, PET/CT imaging with a diagnostic dose of 89Zr-CPC634 accurately reflects on-treatment tumor accumulation and thus opens the possibility for patient stratification in cancer nanomedicine with polymeric nanoparticles.

Original languageEnglish
Article number2201043
JournalAdvanced Materials
Volume34
Issue number21
DOIs
Publication statusPublished - 26 May 2022

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