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Research Article
Open Access

A Novel Anionic-phosphate-platinum Complex Effectively Targets a Cisplatinum-resistant Osteosarcoma in a Patient-derived Orthotopic Xenograft Mouse Model

KENTARO IGARASHI, KEI KAWAGUCHI, NORIO YAMAMOTO, KATSUHIRO HAYASHI, HIROAKI KIMURA, SHINJI MIWA, TAKASHI HIGUCHI, YUTA TANIGUCHI, HIROTAKA YONEZAWA, YOSHIHIRO ARAKI, SEI MORINAGA, SWETA MISRA, SCOTT D. NELSON, SARAH M. DRY, YUNFENG LI, AKIRA ODANI, SHREE RAM SINGH, HIROYUKI TSUCHIYA and ROBERT M. HOFFMAN
Cancer Genomics & Proteomics May 2020, 17 (3) 217-223; DOI: https://doi.org/10.21873/cgp.20182
KENTARO IGARASHI
1AntiCancer, Inc., San Diego, CA, U.S.A.
2Department of Surgery, University of California, San Diego, CA, U.S.A.
3Department of Orthopaedic Surgery, Kanazawa University, Kanazawa, Japan
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KEI KAWAGUCHI
1AntiCancer, Inc., San Diego, CA, U.S.A.
2Department of Surgery, University of California, San Diego, CA, U.S.A.
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NORIO YAMAMOTO
3Department of Orthopaedic Surgery, Kanazawa University, Kanazawa, Japan
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KATSUHIRO HAYASHI
3Department of Orthopaedic Surgery, Kanazawa University, Kanazawa, Japan
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HIROAKI KIMURA
3Department of Orthopaedic Surgery, Kanazawa University, Kanazawa, Japan
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SHINJI MIWA
3Department of Orthopaedic Surgery, Kanazawa University, Kanazawa, Japan
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TAKASHI HIGUCHI
3Department of Orthopaedic Surgery, Kanazawa University, Kanazawa, Japan
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YUTA TANIGUCHI
3Department of Orthopaedic Surgery, Kanazawa University, Kanazawa, Japan
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HIROTAKA YONEZAWA
3Department of Orthopaedic Surgery, Kanazawa University, Kanazawa, Japan
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YOSHIHIRO ARAKI
3Department of Orthopaedic Surgery, Kanazawa University, Kanazawa, Japan
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SEI MORINAGA
3Department of Orthopaedic Surgery, Kanazawa University, Kanazawa, Japan
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SWETA MISRA
4Mouse Cancer Genetics Program, National Cancer Institute, Frederick, MD, U.S.A.
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SCOTT D. NELSON
5Department of Pathology, University of California, Los Angeles, CA, U.S.A.
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SARAH M. DRY
5Department of Pathology, University of California, Los Angeles, CA, U.S.A.
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YUNFENG LI
5Department of Pathology, University of California, Los Angeles, CA, U.S.A.
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AKIRA ODANI
6Division of Pharmaceutical Sciences, Kanazawa University, Kanazawa, Japan
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SHREE RAM SINGH
7Basic Research Laboratory, National Cancer Institute, Frederick, MD, U.S.A.
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  • For correspondence: all@anticancer.com singhshr@mail.nih.gov tsuchi@med.kanazawa-u.ac.jp
HIROYUKI TSUCHIYA
3Department of Orthopaedic Surgery, Kanazawa University, Kanazawa, Japan
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  • For correspondence: all@anticancer.com singhshr@mail.nih.gov tsuchi@med.kanazawa-u.ac.jp
ROBERT M. HOFFMAN
1AntiCancer, Inc., San Diego, CA, U.S.A.
2Department of Surgery, University of California, San Diego, CA, U.S.A.
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  • For correspondence: all@anticancer.com singhshr@mail.nih.gov tsuchi@med.kanazawa-u.ac.jp
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    Figure 1.

    Structure of CDDP and 3Pt (10).

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    Figure 2.

    Growth-inhibition assay. Growth-inhibition of patient-derived osteosarcoma AC-OS01 calls treated with CDDP (A) or 3Pt (B). Cells were incubated with each drug for 72 h and then growth was assessed with the WST-8 method.

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    Figure 3.

    In vivo antitumor efficacy of CDDP and 3Pt on osteosarcoma PDOX mouse model. (A) Treatment protocol (B) Osteosarcoma was grown orthotopically in the right distal femur of nude mice and allowed to form tumors. Mice were treated with CDDP, 3Pt. [CDDP (20 μmol/kg=6 mg/kg/week i.p. for 2 weeks], or 3Pt (15 μmol/kg=41.1 mg/kg/week i.p. for 2 weeks). Tumor volume was measured at the indicated time points after the onset of treatment. N=8 mice/group. *p=0.0004, **p=0.0002.

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    Figure 4.

    Body weight. Bar graphs show body weight in each group at pre-treatment and 2 weeks after initiation of drug administration. There were no significant differences between any group. n.s.: no significant difference.

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    Figure 5.

    Tumor histology. H & E-stained sections of the untreated PDOX tumor (A), PDOX tumor treated with CDDP (B), PDOX tumor treated with 3Pt (C). White scale bars: 80 μm.

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Cancer Genomics - Proteomics: 17 (3)
Cancer Genomics & Proteomics
Vol. 17, Issue 3
May-June 2020
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A Novel Anionic-phosphate-platinum Complex Effectively Targets a Cisplatinum-resistant Osteosarcoma in a Patient-derived Orthotopic Xenograft Mouse Model
KENTARO IGARASHI, KEI KAWAGUCHI, NORIO YAMAMOTO, KATSUHIRO HAYASHI, HIROAKI KIMURA, SHINJI MIWA, TAKASHI HIGUCHI, YUTA TANIGUCHI, HIROTAKA YONEZAWA, YOSHIHIRO ARAKI, SEI MORINAGA, SWETA MISRA, SCOTT D. NELSON, SARAH M. DRY, YUNFENG LI, AKIRA ODANI, SHREE RAM SINGH, HIROYUKI TSUCHIYA, ROBERT M. HOFFMAN
Cancer Genomics & Proteomics May 2020, 17 (3) 217-223; DOI: 10.21873/cgp.20182

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A Novel Anionic-phosphate-platinum Complex Effectively Targets a Cisplatinum-resistant Osteosarcoma in a Patient-derived Orthotopic Xenograft Mouse Model
KENTARO IGARASHI, KEI KAWAGUCHI, NORIO YAMAMOTO, KATSUHIRO HAYASHI, HIROAKI KIMURA, SHINJI MIWA, TAKASHI HIGUCHI, YUTA TANIGUCHI, HIROTAKA YONEZAWA, YOSHIHIRO ARAKI, SEI MORINAGA, SWETA MISRA, SCOTT D. NELSON, SARAH M. DRY, YUNFENG LI, AKIRA ODANI, SHREE RAM SINGH, HIROYUKI TSUCHIYA, ROBERT M. HOFFMAN
Cancer Genomics & Proteomics May 2020, 17 (3) 217-223; DOI: 10.21873/cgp.20182
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Keywords

  • Osteosarcoma
  • cisplatinum-resistant
  • platinum complex
  • efficacy
  • 3Pt
  • PDOX
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