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Lasso peptide microcin J25 variant containing RGD motif as a PET probe for integrin a v ß 3 in tumor imaging.
Mohri, Kohta; Nhat, Kim Phuong Huynh; Zouda, Maki; Warashina, Shota; Wada, Yasuhiro; Watanabe, Yasuyoshi; Tagami, Shunsuke; Mukai, Hidefumi.
Afiliação
  • Mohri K; Laboratory for Molecular Delivery and Imaging Technology, RIKEN Center for Biosystems Dynamics Research, 6-7-3 Minatojima-Minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan.
  • Nhat KPH; Laboratory for Advanced Biomolecular Engineering, RIKEN Center for Biosystems Dynamics Research, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan.
  • Zouda M; Laboratory for Molecular Delivery and Imaging Technology, RIKEN Center for Biosystems Dynamics Research, 6-7-3 Minatojima-Minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan.
  • Warashina S; Laboratory for Molecular Delivery and Imaging Technology, RIKEN Center for Biosystems Dynamics Research, 6-7-3 Minatojima-Minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan.
  • Wada Y; Laboratory for Pathophysiological and Health Science, RIKEN Center for Biosystems Dynamics Research, 6-7-3 Minatojima-Minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan.
  • Watanabe Y; Laboratory for Pathophysiological and Health Science, RIKEN Center for Biosystems Dynamics Research, 6-7-3 Minatojima-Minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan.
  • Tagami S; Laboratory for Advanced Biomolecular Engineering, RIKEN Center for Biosystems Dynamics Research, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan. Electronic address: shunsuke.tagami@riken.jp.
  • Mukai H; Laboratory for Molecular Delivery and Imaging Technology, RIKEN Center for Biosystems Dynamics Research, 6-7-3 Minatojima-Minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan; Department of Pharmaceutical Informatics, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki
Eur J Pharm Sci ; 180: 106339, 2023 Jan 01.
Article em En | MEDLINE | ID: mdl-36414157
Microcin J25 (MccJ25), a lasso peptide, has a unique 3-D interlocked structure that provides high stability under acidic conditions, at high temperatures, and in the presence of proteases. In this study, we generated a positron emission tomography (PET) probe based on MccJ25 analog with an RGD motif and investigated their pharmacokinetics and utility for integrin αvß3 imaging in tumors. The MccJ25 variant with an RGD motif in the loop region and a lysine substitution at the C-terminus (MccJ25(RGDF)GtoK) was produced in E. coli transfected with plasmid DNA containing the MccJ25 biosynthetic gene cluster (mcjABCD). [64Cu]Cu-MccJ25(RGDF)GtoK was synthesized using the C-terminal lysine labeled with copper-64 (t1/2 = 12.7 h) via a bifunctional chelator; it showed stability in 90% mouse plasma for 45 min. Using PET imaging for integrin αvß3 positive U87MG tumor bearing mice, [64Cu]Cu-MccJ25(RGDF)GtoK could clearly distinguish the tumor, and its accumulation was significantly higher than that of MccJ25(GIGT)GtoK without the binding motif for integrin αvß3. Furthermore, MccJ25(RGDF)GtoK enabled visualization of only U87MG tumors but not MCF-7 tumors with low integrin αvß3 expression in double tumor-bearing mice. In ex vivo biodistribution analysis, the integrin αvß3 non-specific accumulation of [64Cu]Cu-MccJ25(RGDF)GtoK was significantly lower in various tissues, except for the kidneys, as compared to the control probe ([64Cu]Cu-cyclic RGD peptide). These results of the present study indicate that 64Cu-labeling methods are appropriate for the synthesis of MccJ25-based PET probes, and [64Cu]Cu-MccJ25 variants are useful tools for cancer molecular imaging.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Sondas Moleculares / Integrina alfaVbeta3 / Tomografia por Emissão de Pósitrons / Neoplasias Limite: Animals Idioma: En Revista: Eur J Pharm Sci Assunto da revista: FARMACIA / FARMACOLOGIA / QUIMICA Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Japão País de publicação: Holanda

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Sondas Moleculares / Integrina alfaVbeta3 / Tomografia por Emissão de Pósitrons / Neoplasias Limite: Animals Idioma: En Revista: Eur J Pharm Sci Assunto da revista: FARMACIA / FARMACOLOGIA / QUIMICA Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Japão País de publicação: Holanda