PMID- 30407835 OWN - NLM STAT- MEDLINE DCOM- 20190909 LR - 20190909 IS - 1543-8392 (Electronic) IS - 1543-8384 (Linking) VI - 15 IP - 12 DP - 2018 Dec 3 TI - Characterization of Novel (18)F-Labeled Phenoxymethylpyridine Derivatives as Amylin Imaging Probes. PG - 5574-5584 LID - 10.1021/acs.molpharmaceut.8b00756 [doi] AB - Deposition of islet amyloid consisting of amylin constitutes one of pathological hallmarks of type 2 diabetes mellitus (T2DM), and it may be involved in the development and progression of T2DM. However, the details about the relationship between the deposition of islet amyloid and the pathology of T2DM remain unclear, since no useful imaging tracer enabling the visualization of pancreatic amylin is available. In the present study, we synthesized and evaluated six novel (18)F-labeled phenoxymethylpyridine (PMP) derivatives as amylin imaging probes. All (18)F-labeled PMP derivatives showed not only affinity for islet amyloid in the post-mortem T2DM pancreatic sections but also excellent pharmacokinetics in normal mice. Furthermore, ex vivo autoradiographic studies demonstrated that [(18)F]FPMP-5 showed intense labeling of islet amyloids in the diabetes model mouse pancreas in vivo. The preclinical studies suggested that [(18)F]FPMP-5 may have potential as an imaging probe that targets amylin aggregates in the T2DM pancreas. FAU - Watanabe, Hiroyuki AU - Watanabe H AD - Department of Patho-Functional Bioanalysis, Graduate School of Pharmaceutical Sciences , Kyoto University , 46-29 Yoshida Shimoadachi-cho , Sakyo-ku, Kyoto 606-8501 , Japan. FAU - Yoshimura, Masashi AU - Yoshimura M AD - Department of Patho-Functional Bioanalysis, Graduate School of Pharmaceutical Sciences , Kyoto University , 46-29 Yoshida Shimoadachi-cho , Sakyo-ku, Kyoto 606-8501 , Japan. FAU - Sano, Kohei AU - Sano K AD - Division of Clinical Radiology Service , Kyoto University Hospital , 54 Shogoin Kawahara-cho , Sakyo-ku, Kyoto 606-8507 , Japan. FAU - Shimizu, Yoichi AU - Shimizu Y AD - Division of Clinical Radiology Service , Kyoto University Hospital , 54 Shogoin Kawahara-cho , Sakyo-ku, Kyoto 606-8507 , Japan. FAU - Kaide, Sho AU - Kaide S AD - Department of Patho-Functional Bioanalysis, Graduate School of Pharmaceutical Sciences , Kyoto University , 46-29 Yoshida Shimoadachi-cho , Sakyo-ku, Kyoto 606-8501 , Japan. FAU - Nakamoto, Yuji AU - Nakamoto Y AD - Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine , Kyoto University , 54 Shogoin Kawahara-cho , Sakyo-ku, Kyoto 606-8507 , Japan. FAU - Togashi, Kaori AU - Togashi K AD - Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine , Kyoto University , 54 Shogoin Kawahara-cho , Sakyo-ku, Kyoto 606-8507 , Japan. FAU - Ono, Masahiro AU - Ono M AUID- ORCID: 0000-0002-2497-039X AD - Department of Patho-Functional Bioanalysis, Graduate School of Pharmaceutical Sciences , Kyoto University , 46-29 Yoshida Shimoadachi-cho , Sakyo-ku, Kyoto 606-8501 , Japan. FAU - Saji, Hideo AU - Saji H AUID- ORCID: 0000-0002-3077-9321 AD - Department of Patho-Functional Bioanalysis, Graduate School of Pharmaceutical Sciences , Kyoto University , 46-29 Yoshida Shimoadachi-cho , Sakyo-ku, Kyoto 606-8501 , Japan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20181108 PL - United States TA - Mol Pharm JT - Molecular pharmaceutics JID - 101197791 RN - 0 (Fluorine Radioisotopes) RN - 0 (Islet Amyloid Polypeptide) RN - 0 (Molecular Probes) RN - 0 (Pyridines) RN - 0 (Radiopharmaceuticals) RN - GZ5I74KB8G (Fluorine-18) SB - IM MH - Animals MH - Autoradiography/methods MH - Diabetes Mellitus, Type 2/*diagnostic imaging/genetics/pathology MH - Disease Models, Animal MH - Fluorine Radioisotopes/administration & dosage/chemistry/pharmacokinetics MH - Humans MH - Islet Amyloid Polypeptide/genetics/*metabolism MH - Islets of Langerhans/diagnostic imaging/pathology MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Mice, Transgenic MH - Molecular Probes/administration & dosage/chemistry/*pharmacokinetics MH - Pyridines/administration & dosage/chemistry/pharmacokinetics MH - Radiopharmaceuticals/administration & dosage/chemistry/*pharmacokinetics MH - Tissue Distribution OTO - NOTNLM OT - amylin OT - fluorine-18 OT - imaging OT - type 2 diabetes EDAT- 2018/11/09 06:00 MHDA- 2019/09/10 06:00 CRDT- 2018/11/09 06:00 PHST- 2018/11/09 06:00 [pubmed] PHST- 2019/09/10 06:00 [medline] PHST- 2018/11/09 06:00 [entrez] AID - 10.1021/acs.molpharmaceut.8b00756 [doi] PST - ppublish SO - Mol Pharm. 2018 Dec 3;15(12):5574-5584. doi: 10.1021/acs.molpharmaceut.8b00756. Epub 2018 Nov 8.