Chitosan-Poly(Acrylic Acid) Nanoparticles Loaded with R848 and MnCl2 Inhibit Melanoma via Regulating Macrophage Polarization and Dendritic Cell Maturation

Xinghan Liu,1 Yujun Xu,1 Lijie Yin,1 Yayi Hou,1,2 Shuli Zhao3 1The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing, 210093, People’s Republic of China; 2Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing...

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Autores principales:	Liu X, Xu Y, Yin L, Hou Y, Zhao S
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2021
Materias:	t cell sting nf-"κ" b antigen-presenting cell Medicine (General) R5-920
Acceso en línea:	https://doaj.org/article/17ecb5a09c534a1399987c03837d6927
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spelling	oai:doaj.org-article:17ecb5a09c534a1399987c03837d69272021-12-02T18:45:47ZChitosan-Poly(Acrylic Acid) Nanoparticles Loaded with R848 and MnCl2 Inhibit Melanoma via Regulating Macrophage Polarization and Dendritic Cell Maturation1178-2013https://doaj.org/article/17ecb5a09c534a1399987c03837d69272021-08-01T00:00:00Zhttps://www.dovepress.com/chitosan-polyacrylic-acid-nanoparticles-loaded-with-r848-and-mncl2-inh-peer-reviewed-fulltext-article-IJNhttps://doaj.org/toc/1178-2013Xinghan Liu,1 Yujun Xu,1 Lijie Yin,1 Yayi Hou,1,2 Shuli Zhao3 1The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing, 210093, People’s Republic of China; 2Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing, 210093, People’s Republic of China; 3General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006, People’s Republic of ChinaCorrespondence: Yayi HouThe State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing, 210093, People’s Republic of China, Tel/Fax +86-25-8968-8441Email yayihou@nju.edu.cnShuli ZhaoGeneral Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006, People’s Republic of China, Tel/Fax +86-25-8968-8441Email shulizhao79@163.comPurpose: Since immune cells in the tumor microenvironment (TME) can affect the development and progression of tumors, strategies modulating immune cells are considered to have an important therapeutic effect. As a TLR7/8 agonist, R848 effectively activates the innate immune cells to exert an anti-tumor effect. Mn2+ has been reported to strongly promote the maturation of antigen-presenting cells (APCs), thereby enhancing the cytotoxicity of CD8+ T cells. Thus, we tried to investigate whether chitosan-poly(acrylic acid) nanoparticles (CS-PAA NPs) loaded with R848 and MnCl2 (R-M@CS-PAA NPs) could exert an anti-tumor effect by regulating the function of immune cells.Methods: R-M@CS-PAA NPs were prepared, and their basic characteristics, anti-tumor effect, and potential mechanisms were explored both in vitro and in vivo.Results: R-M@CS-PAA NPs easily released MnCl2 and R848 at low pH. In B16F10 mouse melanoma model, R-M@CS-PAA NPs exerted the most significant anti-melanoma effect compared with the control group and CS-PAA NPs loaded with R848 or MnCl2 alone. FITC-labeled R-M@CS-PAA NPs were displayed to be accumulated at the tumor site. R-M@CS-PAA NPs significantly increased the infiltration of M1 macrophages and CD8+ T cells but reduced the number of suppressive immune cells in the TME. Moreover, in vitro experiments showed that R-M@CS-PAA NPs polarized macrophages into the M1 phenotype to inhibit the proliferation of B16F10 cells. R-M@CS-PAA NPs also enhanced the killing function of CD8+ T cells to B16F10 cells. Of note, R-M@CS-PAA NPs not only promoted the maturation of APCs such as dendritic cells and macrophages by STING and NF-&kcy;B pathways, but also enhanced the ability of dendritic cells to present ovalbumin to OT-I CD8+ T cells to enhance the cytotoxicity of OT-I CD8+ T cells to ovalbumin-expressing B16F10 cells.Conclusion: These data indicate that the administration of R-M@CS-PAA NPs is an effective therapeutic strategy against melanoma.Keywords: T cell, STING, NF-&kcy;B, antigen-presenting cellLiu XXu YYin LHou YZhao SDove Medical Pressarticlet cellstingnf-"κ" bantigen-presenting cellMedicine (General)R5-920ENInternational Journal of Nanomedicine, Vol Volume 16, Pp 5675-5692 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	t cell sting nf-"κ" b antigen-presenting cell Medicine (General) R5-920
spellingShingle	t cell sting nf-"κ" b antigen-presenting cell Medicine (General) R5-920 Liu X Xu Y Yin L Hou Y Zhao S Chitosan-Poly(Acrylic Acid) Nanoparticles Loaded with R848 and MnCl2 Inhibit Melanoma via Regulating Macrophage Polarization and Dendritic Cell Maturation
description	Xinghan Liu,1 Yujun Xu,1 Lijie Yin,1 Yayi Hou,1,2 Shuli Zhao3 1The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing, 210093, People’s Republic of China; 2Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing, 210093, People’s Republic of China; 3General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006, People’s Republic of ChinaCorrespondence: Yayi HouThe State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing, 210093, People’s Republic of China, Tel/Fax +86-25-8968-8441Email yayihou@nju.edu.cnShuli ZhaoGeneral Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006, People’s Republic of China, Tel/Fax +86-25-8968-8441Email shulizhao79@163.comPurpose: Since immune cells in the tumor microenvironment (TME) can affect the development and progression of tumors, strategies modulating immune cells are considered to have an important therapeutic effect. As a TLR7/8 agonist, R848 effectively activates the innate immune cells to exert an anti-tumor effect. Mn2+ has been reported to strongly promote the maturation of antigen-presenting cells (APCs), thereby enhancing the cytotoxicity of CD8+ T cells. Thus, we tried to investigate whether chitosan-poly(acrylic acid) nanoparticles (CS-PAA NPs) loaded with R848 and MnCl2 (R-M@CS-PAA NPs) could exert an anti-tumor effect by regulating the function of immune cells.Methods: R-M@CS-PAA NPs were prepared, and their basic characteristics, anti-tumor effect, and potential mechanisms were explored both in vitro and in vivo.Results: R-M@CS-PAA NPs easily released MnCl2 and R848 at low pH. In B16F10 mouse melanoma model, R-M@CS-PAA NPs exerted the most significant anti-melanoma effect compared with the control group and CS-PAA NPs loaded with R848 or MnCl2 alone. FITC-labeled R-M@CS-PAA NPs were displayed to be accumulated at the tumor site. R-M@CS-PAA NPs significantly increased the infiltration of M1 macrophages and CD8+ T cells but reduced the number of suppressive immune cells in the TME. Moreover, in vitro experiments showed that R-M@CS-PAA NPs polarized macrophages into the M1 phenotype to inhibit the proliferation of B16F10 cells. R-M@CS-PAA NPs also enhanced the killing function of CD8+ T cells to B16F10 cells. Of note, R-M@CS-PAA NPs not only promoted the maturation of APCs such as dendritic cells and macrophages by STING and NF-&kcy;B pathways, but also enhanced the ability of dendritic cells to present ovalbumin to OT-I CD8+ T cells to enhance the cytotoxicity of OT-I CD8+ T cells to ovalbumin-expressing B16F10 cells.Conclusion: These data indicate that the administration of R-M@CS-PAA NPs is an effective therapeutic strategy against melanoma.Keywords: T cell, STING, NF-&kcy;B, antigen-presenting cell
format	article
author	Liu X Xu Y Yin L Hou Y Zhao S
author_facet	Liu X Xu Y Yin L Hou Y Zhao S
author_sort	Liu X
title	Chitosan-Poly(Acrylic Acid) Nanoparticles Loaded with R848 and MnCl2 Inhibit Melanoma via Regulating Macrophage Polarization and Dendritic Cell Maturation
title_short	Chitosan-Poly(Acrylic Acid) Nanoparticles Loaded with R848 and MnCl2 Inhibit Melanoma via Regulating Macrophage Polarization and Dendritic Cell Maturation
title_full	Chitosan-Poly(Acrylic Acid) Nanoparticles Loaded with R848 and MnCl2 Inhibit Melanoma via Regulating Macrophage Polarization and Dendritic Cell Maturation
title_fullStr	Chitosan-Poly(Acrylic Acid) Nanoparticles Loaded with R848 and MnCl2 Inhibit Melanoma via Regulating Macrophage Polarization and Dendritic Cell Maturation
title_full_unstemmed	Chitosan-Poly(Acrylic Acid) Nanoparticles Loaded with R848 and MnCl2 Inhibit Melanoma via Regulating Macrophage Polarization and Dendritic Cell Maturation
title_sort	chitosan-poly(acrylic acid) nanoparticles loaded with r848 and mncl2 inhibit melanoma via regulating macrophage polarization and dendritic cell maturation
publisher	Dove Medical Press
publishDate	2021
url	https://doaj.org/article/17ecb5a09c534a1399987c03837d6927
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_version_	1718377665723891712

Chitosan-Poly(Acrylic Acid) Nanoparticles Loaded with R848 and MnCl2 Inhibit Melanoma via Regulating Macrophage Polarization and Dendritic Cell Maturation

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