Details

Autor(en) / Beteiligte

• Zheng, Di-Wei
• Chen, Ying
• Li, Zi-Hao
• Xu, Lu
• Li, Chu-Xin
• Li, Bin
• Fan, Jin-Xuan
• Cheng, Si-Xue
• Zhang, Xian-Zheng

Titel

Optically-controlled bacterial metabolite for cancer therapy

Ist Teil von

• Nature communications, 2018-04, Vol.9 (1), p.1680-12, Article 1680

Ort / Verlag

England: Nature Publishing Group

Erscheinungsjahr

2018

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Bacteria preferentially accumulating in tumor microenvironments can be utilized as natural vehicles for tumor targeting. However, neither current chemical nor genetic approaches alone can fully satisfy the requirements on both stability and high efficiency. Here, we propose a strategy of "charging" bacteria with a nano-photocatalyst to strengthen their metabolic activities. Carbon nitride (C N ) is combined with Escherichia coli (E. coli) carrying nitric oxide (NO) generation enzymes for photo-controlled bacterial metabolite therapy (PMT). Under light irradiation, photoelectrons produced by C N can be transferred to E. coli to promote the enzymatic reduction of endogenous NO to cytotoxic NO with a 37-fold increase. In a mouse model, C N loaded bacteria are perfectly accumulated throughout the tumor and the PMT treatment results in around 80% inhibition of tumor growth. Thus, synthetic materials-remodeled microorganism may be used to regulate focal microenvironments and increase therapeutic efficiency.