What question did this study set out to answer?

To develop a probiotic-based delivery platform that utilizes bacterial tumor tropism to deliver a responsive type I photosensitizer for tumor imaging and photodynamic immunotherapy.

September 17, 2026Analytical Chemistry

Probiotics-Driven Type I Photosensitizer for Tumor-Targeted Fluorescence Imaging and Photodynamic Immunotherapy

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Authors

JZJiayi ZhaoSichuan University XPXiu Pan YCYuan Chen

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Implication

Preclinical study reveals probiotic-driven photosensitizers enable tumor imaging and immune activation in mice, suggesting a potent strategy for targeted cancer theranostics.

Key Points

To develop a probiotic-based delivery platform that utilizes bacterial tumor tropism to deliver a responsive type I photosensitizer for tumor imaging and photodynamic immunotherapy.
Engineered Escherichia coli by conjugating it with a boric acid-functionalized type I photosensitizer (E. coli@ACR-DMP) designed to target hypoxic environments and respond to acidic tumor conditions.
Assessed tumor accumulation, fluorescence diagnostic capabilities, photodynamic ablation, and systemic immune activation in a 4T1 tumor-bearing mouse model.
E. coli@ACR-DMP selectively homed to hypoxic tumors and released photosensitizers in acidic conditions, enabling fluorescence tumor diagnosis.
Photodynamic tumor ablation combined with bacterial pathogen-associated molecular patterns promoted dendritic cell maturation and T-cell infiltration, significantly suppressing tumor growth and stimulating systemic antitumor immunity.

Cite This Study

Zhao et al. (2026) studied this question.

synapsesocial.com/papers/6aabb68c5f706d05830e5011 https://doi.org/10.1021/acs.analchem.6c04528

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Implication

Preclinical study reveals probiotic-driven photosensitizers enable tumor imaging and immune activation in mice, suggesting a potent strategy for targeted cancer theranostics.

Probiotics-Driven Type I Photosensitizer for Tumor-Targeted Fluorescence Imaging and Photodynamic Immunotherapy

Discussion

Member takes

Implication

Key Points

Cite This Study

Probiotics-Driven Type I Photosensitizer for Tumor-Targeted Fluorescence Imaging and Photodynamic Immunotherapy

Discussion

Member takes

Implication

Key Points

Cite This Study

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