What question did this study set out to answer?

To determine whether providing oxygen following photodynamic therapy can inhibit hypoxia-induced tumor metastasis.

October 11, 2022Nano Letters

Post-Remedial Oxygen Supply: A New Perspective on Photodynamic Therapy to Suppress Tumor Metastasis

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Authors

CQChaoqiang QiaoXidian University ZYZuo YangXidian University XLXuelan LiuSouth China Normal University

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Implication

Preclinical study demonstrates that post-treatment oxygen delivery suppresses photodynamic therapy-induced metastasis in breast cancer models, suggesting safer protocols for oxygen-dependent...

Key Points

To determine whether providing oxygen following photodynamic therapy can inhibit hypoxia-induced tumor metastasis.
Engineered tumor-targeting Ce6@BSA and PFC@BSA nanoparticles to deliver photodynamic therapy and post-treatment oxygen supply in a 4T1 orthotopic breast cancer murine model.
Evaluated metastatic outcomes using clinical regimens combining an FDA-approved photosensitizer (hypericin) with supplemental oxygen inhalation.
Photodynamic therapy alone heightened tumor metastasis by activating the HIF-1α signaling pathway under therapy-induced hypoxia.
Post-treatment oxygen supply blocked the HIF-1α pathway, significantly suppressing photodynamic therapy-induced metastasis in both nanoparticle and hypericin-based protocols.

Cite This Study

Qiao et al. (2022) studied this question.

synapsesocial.com/papers/6a895a06de654513746219fe https://doi.org/10.1021/acs.nanolett.2c02983

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Implication

Preclinical study demonstrates that post-treatment oxygen delivery suppresses photodynamic therapy-induced metastasis in breast cancer models, suggesting safer protocols for oxygen-dependent...

Post-Remedial Oxygen Supply: A New Perspective on Photodynamic Therapy to Suppress Tumor Metastasis

Discussion

Member takes

Implication

Key Points

Cite This Study

Post-Remedial Oxygen Supply: A New Perspective on Photodynamic Therapy to Suppress Tumor Metastasis

Discussion

Member takes

Implication

Key Points

Cite This Study

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