Journal
SMALL
Volume 17, Issue 37, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.202101897
Keywords
cascade reaction; chemodynamic therapy; dendritic cells; immune system activation; immunogenic cell death
Categories
Funding
- National Natural Science Foundation of China [81771976]
- National Key Research and Development Program of China [2018YFC1901202]
- State Key Laboratory of Pathogen and Biosecurity (Academy of Military Medical Science) [SKLPBS2134]
- Fundamental Research Funds for the Central Universities
- Southeast University
- Nanjing Medical University
Ask authors/readers for more resources
Traditional chemo-immunotherapy can induce T cell immune response through immunogenic cell death (ICD), but the limited ICD hinders lasting antitumor immunotherapeutic efficacy. A novel tadpole-ovoid Au@HMnMSNs nanoreactor is constructed to generate intratumoral hydroxyl radicals for enhanced ICD induction and DC maturation, along with DOX and ASA for recruitment of immune cells and inhibition of immunosuppressive cells.
Traditional chemo-immunotherapy can elicit T cell immune response by inducing immunogenic cell death (ICD), however, insufficient ICD limits the lasting antitumor immunotherapeutic efficacy. Herein, tadpole-ovoid manganese-doped hollow mesoporous silica coated gold nanoparticles (Au@HMnMSNs) as biodegradable catalytic cascade nanoreactors are constructed to generate intratumoral high-toxic hydroxyl radicals combined with DOX and Aspirin (ASA) for enhancing the induction of ICD and maturation of dendritic cells (DCs). The released Mn2+ can catalyze endogenous H2O2 to hydroxyl radicals, while internal gold nanoparticles mimetic glucose oxidase (GOx) converted glucose into H2O2 to accelerate the generation of hydroxyl radicals. On the other hand, tadpole oval-structured Au@HMnMSNs can avoid the inactivation of gold nanoparticles due to strong protein adsorption. The introduction of ASA is to recruit DCs and cytotoxic T lymphocytes (CTLs) to tumor sites and restrain the intratumoral infiltration of immunosuppressive cells by decreasing the expression of prostaglandin E2 (PGE(2)). Accordingly, this work presents a novel insight to introduce GOx-like catalytic cascade ICD nano-inducer into antitumor immunotherapy for synergistic tumor therapy.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available