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Strengthened EPR effect of AIEgen-Poly(I:C) composite nanoparticles to facilitate antigen cross-presentation and improve melanoma prognosis by evoking immunity.
- Source :
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Chemical Engineering Journal . Oct2023, Vol. 473, pN.PAG-N.PAG. 1p. - Publication Year :
- 2023
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Abstract
- • Combination of DTQE-3+ with Poly(I:C) for photodynamic-immuno bimodal therapy. • P@AP composite nanoparticles induce ICD and promote antigen presentation massively. • Recruitment of pAPC by nanoparticle facilitates antigen cross-presentation in vivo. • Bimodal therapy with photodynamic and immune boosts the prognosis of melanoma. Nanoparticles offer a promising platform for drug delivery due to their long circulation time, enhanced solubility, low toxicity and excellent targeting of lesions. Herein, we report an AIEgen -Poly (I:C) composite nanoparticle (P@AP) for dual-modality tumor photodynamic-immunotherapy. Its specific size and capacity for partial degradation under acidic conditions determine its enhanced EPR effect. By complexing with the immunoadjuvant Poly(I:C), the immune silencing mechanism induced by apoptosis can be overcome and ICD is evoked efficiently at the cellular level. In the process of antigen presentation, P@AP , as an exogenous antigen, on the one hand, strengthens the expression of antigen presentation signal molecule MHC II and activates CD4+ T cells, on the other hand, enhancing pAPC infiltration by the increase of endogenous antigens represented by damage-associated molecular patterns while expressing MHC I via antigenic cross-presentation remarkably induces activation of CD8+ T cells, directly enhancing the killing of target cells. Massive immune arousal results in sustained tissue-resident memory T-cell residency in melanoma and reduces expression of CD4+ subsets of Treg cells, thereby prolonging the survival of subcutaneous melanoma mice and ridding of the poor prognosis of malignant melanoma stemming from its auto-immunosuppressive properties. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13858947
- Volume :
- 473
- Database :
- Academic Search Index
- Journal :
- Chemical Engineering Journal
- Publication Type :
- Academic Journal
- Accession number :
- 171846499
- Full Text :
- https://doi.org/10.1016/j.cej.2023.145205