The Role of Autophagy in M2 Polarization of Macrophages Induced by Micro/Nano Topography

Jing Luo,1,2,* Yide He,1,* Fanhui Meng,1,3,* Ning Yan,1 Yumei Zhang,1 Wen Song1 1State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral Diseases, Department of Prosthodontics, School of Stomatology, The Four...

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Autores principales:	Luo J, He Y, Meng F, Yan N, Zhang Y, Song W
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2020
Materias:	macrophages polarization micro/nano topography tio2 nanotubes autophagy erk Medicine (General) R5-920
Acceso en línea:	https://doaj.org/article/1cca18f15a6443feaad92aad77087bd9
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spelling	oai:doaj.org-article:1cca18f15a6443feaad92aad77087bd92021-12-02T12:05:08ZThe Role of Autophagy in M2 Polarization of Macrophages Induced by Micro/Nano Topography1178-2013https://doaj.org/article/1cca18f15a6443feaad92aad77087bd92020-10-01T00:00:00Zhttps://www.dovepress.com/the-role-of-autophagy-in-m2-polarization-of-macrophages-induced-by-mic-peer-reviewed-article-IJNhttps://doaj.org/toc/1178-2013Jing Luo,1,2,* Yide He,1,* Fanhui Meng,1,3,* Ning Yan,1 Yumei Zhang,1 Wen Song1 1State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral Diseases, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi’an 710032, People’s Republic of China; 2Department of Stomatology, General Hospital of Southern Theater Command, PLA, Guangzhou 510010, People’s Republic of China; 3State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Key Laboratory of Oral Diseases, Department of Dental Materials, School of Stomatology, The Fourth Military Medical University, Xi’an 710032, People’s Republic of China*These authors contributed equally to this workCorrespondence: Yumei Zhang Email wqtzym@fmmu.edu.cnWen Song Email songwenfmmu@hotmail.comBackground: The proper topography of implant surface can induce macrophages polarization, whereas the regulation mechanism has not been fully deciphered. The study aimed to examine the regulation mechanism of macrophages M2 polarization by titanium (Ti) implant surface micro/nano topography.Results: Firstly, the titanium implant micropits-nanotubular surface with &sim; 30 nm diameters (MNT) can induce the M2 polarization of RAW264.7 spontaneously, as indicated by the spindle-like cell morphological alteration and specific molecular marker arginase-1 (Arg1) expression. Next, the autophagic vacuoles (AVs) number is significantly increased on MNT surface, as confirmed by the monodansylcadaverine (MDC) and CYTO-ID staining as well as the transmission electron microscope (TEM) observation. In addition, increasing or decreasing the autophagosomes number by rapamycin or 3-methyladenine (3-MA) will result in augmentation or attenuation of Arg1. Furthermore, blocking the fusion between autophagosomes and lysosomes by bafilomycin also significantly reduces Arg1, even in the presence of rapamycin. Finally, the ERK phosphorylation is selectively upregulated on MNT surface and the AVs number and Arg1 expression are significantly suppressed by U0126 treatment.Conclusion: Our findings suggest that the ERK-Beclin-1-autophagy axis may play a pivotal role in the regulation of M2 polarization induced by nanotopography.Keywords: macrophages polarization, micro/nano topography, TiO2 nanotubes, autophagy, ERKLuo JHe YMeng FYan NZhang YSong WDove Medical Pressarticlemacrophages polarizationmicro/nano topographytio2 nanotubesautophagyerkMedicine (General)R5-920ENInternational Journal of Nanomedicine, Vol Volume 15, Pp 7763-7774 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	macrophages polarization micro/nano topography tio2 nanotubes autophagy erk Medicine (General) R5-920
spellingShingle	macrophages polarization micro/nano topography tio2 nanotubes autophagy erk Medicine (General) R5-920 Luo J He Y Meng F Yan N Zhang Y Song W The Role of Autophagy in M2 Polarization of Macrophages Induced by Micro/Nano Topography
description	Jing Luo,1,2,* Yide He,1,* Fanhui Meng,1,3,* Ning Yan,1 Yumei Zhang,1 Wen Song1 1State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral Diseases, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi’an 710032, People’s Republic of China; 2Department of Stomatology, General Hospital of Southern Theater Command, PLA, Guangzhou 510010, People’s Republic of China; 3State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Key Laboratory of Oral Diseases, Department of Dental Materials, School of Stomatology, The Fourth Military Medical University, Xi’an 710032, People’s Republic of China*These authors contributed equally to this workCorrespondence: Yumei Zhang Email wqtzym@fmmu.edu.cnWen Song Email songwenfmmu@hotmail.comBackground: The proper topography of implant surface can induce macrophages polarization, whereas the regulation mechanism has not been fully deciphered. The study aimed to examine the regulation mechanism of macrophages M2 polarization by titanium (Ti) implant surface micro/nano topography.Results: Firstly, the titanium implant micropits-nanotubular surface with &sim; 30 nm diameters (MNT) can induce the M2 polarization of RAW264.7 spontaneously, as indicated by the spindle-like cell morphological alteration and specific molecular marker arginase-1 (Arg1) expression. Next, the autophagic vacuoles (AVs) number is significantly increased on MNT surface, as confirmed by the monodansylcadaverine (MDC) and CYTO-ID staining as well as the transmission electron microscope (TEM) observation. In addition, increasing or decreasing the autophagosomes number by rapamycin or 3-methyladenine (3-MA) will result in augmentation or attenuation of Arg1. Furthermore, blocking the fusion between autophagosomes and lysosomes by bafilomycin also significantly reduces Arg1, even in the presence of rapamycin. Finally, the ERK phosphorylation is selectively upregulated on MNT surface and the AVs number and Arg1 expression are significantly suppressed by U0126 treatment.Conclusion: Our findings suggest that the ERK-Beclin-1-autophagy axis may play a pivotal role in the regulation of M2 polarization induced by nanotopography.Keywords: macrophages polarization, micro/nano topography, TiO2 nanotubes, autophagy, ERK
format	article
author	Luo J He Y Meng F Yan N Zhang Y Song W
author_facet	Luo J He Y Meng F Yan N Zhang Y Song W
author_sort	Luo J
title	The Role of Autophagy in M2 Polarization of Macrophages Induced by Micro/Nano Topography
title_short	The Role of Autophagy in M2 Polarization of Macrophages Induced by Micro/Nano Topography
title_full	The Role of Autophagy in M2 Polarization of Macrophages Induced by Micro/Nano Topography
title_fullStr	The Role of Autophagy in M2 Polarization of Macrophages Induced by Micro/Nano Topography
title_full_unstemmed	The Role of Autophagy in M2 Polarization of Macrophages Induced by Micro/Nano Topography
title_sort	role of autophagy in m2 polarization of macrophages induced by micro/nano topography
publisher	Dove Medical Press
publishDate	2020
url	https://doaj.org/article/1cca18f15a6443feaad92aad77087bd9
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The Role of Autophagy in M2 Polarization of Macrophages Induced by Micro/Nano Topography

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