What question did this study set out to answer?

To engineer a tumor-colonizing bacterial bioreactor that sustainably produces localized hydrogen peroxide and catalytically converts it into cytotoxic hydroxyl radicals for targeted cancer therapy.

February 25, 2019Advanced Materials

Engineered Bacterial Bioreactor for Tumor Therapy via Fenton‐Like Reaction with Localized H₂O₂ Generation

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To engineer a tumor-colonizing bacterial bioreactor that sustainably produces localized hydrogen peroxide and catalytically converts it into cytotoxic hydroxyl radicals for targeted cancer therapy.
Engineered Escherichia coli MG1655 to overexpress the NDH-2 respiratory chain enzyme (Ec-pE) to promote tumor colonization and elevate localized H2O2 generation.
Covalently linked magnetic Fe3O4 nanoparticles to the bacterial surface to catalyze a Fenton-like reaction converting H2O2 into cytotoxic hydroxyl radicals (•OH).
Engineered bacteria achieved effective tumor colonization and sustained in situ H2O2 production without the need for external H2O2 administration.
The integrated nanoparticle catalyst successfully generated toxic hydroxyl radicals via Fenton-like chemistry, inducing severe apoptotic cell death in tumor tissue.

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Implication

Preclinical study demonstrates self-supplied Fenton-like tumor apoptosis using engineered bacteria and catalytic nanoparticles, indicating a targeted platform for anticancer bio-chemodynamic therapy.

Cite This Study

Fan et al. (2019) studied this question.

synapsesocial.com/papers/69de8ad06bae133e7de93bc7 https://doi.org/10.1002/adma.201808278

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Implication

Preclinical study demonstrates self-supplied Fenton-like tumor apoptosis using engineered bacteria and catalytic nanoparticles, indicating a targeted platform for anticancer bio-chemodynamic therapy.

Engineered Bacterial Bioreactor for Tumor Therapy via Fenton‐Like Reaction with Localized H₂O₂ Generation

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Discussion

Implication

Cite This Study

Engineered Bacterial Bioreactor for Tumor Therapy via Fenton‐Like Reaction with Localized H₂O₂ Generation

Key Points

Discussion

Implication

Cite This Study

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