Toward Engineered Biosynthesis of Drugs in Human Cells

  • Shinya Matsuda
    Department of Pharmaceutical Sciences University of Shizuoka Shizuoka 422-8526 Japan
  • Yuta Tsunematsu
    Department of Pharmaceutical Sciences University of Shizuoka Shizuoka 422-8526 Japan
  • Takuma Matsushita
    Department of Pharmaceutical Sciences University of Shizuoka Shizuoka 422-8526 Japan
  • Yuji Ogata
    Department of Pharmaceutical Sciences University of Shizuoka Shizuoka 422-8526 Japan
  • Shihomi Hachiya
    Department of Pharmaceutical Sciences University of Shizuoka Shizuoka 422-8526 Japan
  • Shinji Kishimoto
    Department of Pharmaceutical Sciences University of Shizuoka Shizuoka 422-8526 Japan
  • Noriyuki Miyoshi
    Department of Pharmaceutical Sciences University of Shizuoka Shizuoka 422-8526 Japan
  • Kenji Watanabe
    Department of Pharmaceutical Sciences University of Shizuoka Shizuoka 422-8526 Japan

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<jats:title>Abstract</jats:title><jats:p>Biosynthetic genes are not only responsible for the formation of bioactive substances but also suited for other applications including gene therapy. To test the feasibility of human cells producing antibiotics in situ when provided with a heterologous biosynthetic gene, we focused on cytochrome P450, the class of enzymes important in conferring bioactivity to natural product precursors. We selected Fma‐P450 that plays a central role in the fumagillin antimicrobial biosynthesis in <jats:italic>Aspergillus fumigatus</jats:italic> to examine fungal metabolite production by HeLa cells that express <jats:italic>fma‐P450</jats:italic> heterologously. Here we show that HeLa cells harboring <jats:italic>fma‐P450</jats:italic> can biosynthesize 5‐hydroxyl‐β‐<jats:italic>trans</jats:italic>‐bergamoten and cytotoxic 5‐<jats:italic>epi</jats:italic>‐demethoxyfumagillol when supplemented with the nontoxic precursor β‐<jats:italic>trans</jats:italic>‐bergamotene. While the production level was insufficient to effect cell death, we demonstrate that programming human cells to autogenerate antibiotics by introducing a heterologous biosynthetic gene is feasible.</jats:p>

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