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Two-Step Synthesis of Galactosylated Human Serum Albumin as a Targeted Optical Imaging Agent for Peritoneal Carcinomatosis

  1. Author:
    Regino, C. A. S.
    Ogawa, M.
    Alford, R.
    Wong, K. J.
    Kosaka, N.
    Williams, M.
    Feild, B. J.
    Takahashi, M.
    Choyke, P. L.
    Kobayashi, H.
  2. Author Address

    [Regino, Celeste Aida S.; Ogawa, Mikako; Alford, Raphael; Wong, Karen J.; Kosaka, Noboyuki; Williams, Mark; Choyke, Peter L.; Kobayashi, Hisataka] NCI, Mol Imaging Program, Ctr Canc Res, NIH, Bethesda, MD 20892 USA. [Alford, Raphael] Case Western Reserve Univ, Sch Med, Cleveland, OH 44106 USA. [Williams, Mark] NCI, Lab Anim Sci Program, SAIC Frederick Inc, Frederick, MD 21702 USA. [Feild, Brian J.; Takahashi, Masatoshi] Shimazdu Sci Instruments, Columbia, MD 21046 USA.;Kobayashi, H, NCI, Mol Imaging Program, Ctr Canc Res, NIH, 10 Ctr Dr,Bldg 10,Room 1B40,MSC 1088, Bethesda, MD 20892 USA.;kobayash@mail.nih.gov
    1. Year: 2010
    2. Date: Feb
  1. Journal: Journal of Medicinal Chemistry
    1. 53
    2. 4
    3. Pages: 1579-1586
  2. Type of Article: Article
  3. ISSN: 0022-2623
  1. Abstract:

    An optical probe, RG-(gal)(28)GSA, was synthesized to improve the detection of peritoneal implants by targeting the beta-D-galactose receptors highly expressed oil the cell surface of a wide variety of cancers arising from the ovary, pancreas, colon, and stomach. Evaluation of RG-(gal)(28)GSA, RG-(gal)(20)GSA, glucose-analogue RG-(glu)(28)GSA, and control RG-HSA demonstrates specificity for the galactose, binding to several human adenocarcinoma cell lines, and cellular internalization. Studies using peritoneally disseminated SHIN3 xenografts in mice also confirmed a preference for galactose with the ability to detect submillimeter size lesions. Preliminary toxicity study for RG-(gal)(28)GSA using Balb/c mice reveal 110 toxic effects up to 100x of the standard imaging dose of 1 mg/kg administered either intraperitoneally or intravenously. These data Indicate that RG-(gal)(28)GSA can selectively target a variety of human adenocarcinomas, can Improve intraoperative or endoscopic tumor detection and resection, and may have little or no toxic in vivo effects hence, it may be clinically translatable.

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External Sources

  1. DOI: 10.1021/jm901228u
  2. WOS: 000274581200014

Library Notes

  1. Fiscal Year: FY2009-2010
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