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Biological evaluation of 3-[$$^{18}$$F]fluoro-$$alpha$$-methyl-D-tyrosine (D-[$$^{18}$$F]FAMT) as a novel amino acid tracer for positron emission tomography

Ohshima, Yasuhiro; Hanaoka, Hirofumi*; Tominaga, Hideyuki*; Kanai, Yoshikatsu*; Kaira, Kyoichi*; Yamaguchi, Aiko*; Nagamori, Shushi*; Oriuchi, Noboru*; Tsushima, Yoshito*; Endo, Keigo*; Ishioka, Noriko

Since D-amino acid is not distributed much in the non-target organs and is rapidly excreted in the urine, radiotracer using D-amino acid would allow clear PET image of the tumor early after administration. In this study, we prepared 3-[$$^{18}$$F]fluoro-$$alpha$$-methyl-D-tyrosine (D-[$$^{18}$$F]FAMT) and evaluated its usefulness. In biodistribution studies, D-[$$^{18}$$F]FAMT showed rapid clearance from the blood, marked accumulation and retention in the tumor and low accumulation in non-target organs. The amount of D-[$$^{18}$$F]FAMT in the tumor was also lowered, tumor-to-blood ratio and tumor-to-muscle ratio of D-[$$^{18}$$F]FAMT were similar to those of correspondign L-isomer, 3-[$$^{18}$$F]fluoro-$$alpha$$-methyl-L-tyrosine (L-[$$^{18}$$F]FAMT), at every timepoint. Consequently, PET imaging with D-[$$^{18}$$F]FAMT could not show clear image of the tumor early after the administration. However, D-[$$^{18}$$F]FAMT enabled higher tumor-to-background contrast than L-[$$^{18}$$F]FAMT. In conclusions, D-[$$^{18}$$F]FAMT showed rapid blood clearance, low accumulation in non-target organs, and tumor-selective image compared with L-[$$^{18}$$F]FAMT. Thus, D-[$$^{18}$$F]FAMT could potentially serve as a novel PET tracer for imaging malignant tumors.

Language

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English

Journal

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Annals of Nuclear Medicine

Volume

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27

Number

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4

Pages

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p.314 - 324

Publication Year/Month

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2013/05

Meeting title

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Held date

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Location (city)

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Location (country)

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Patent information

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PDF

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Paper URL

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https://doi.org/10.1007/s12149-013-0687-7

DOI for research data

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Link to research data related to this paper/report.

Keywords

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no keyword

Research Facility

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Press Release

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Article of JAEA R&D Review

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Clear Imaging of Tumor with D-Amino Acid; Development of a Novel Amino Acid Tracer, D-[$$^{18}$$F]FAMT, for PET Diagnosis of Cancer[/]

Cooperating Institute

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群馬大学

Accesses

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- Accesses

InCites™

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Percentile:48.78

Category:Radiology, Nuclear Medicine & Medical Imaging

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