Surface morphology live-cell imaging reveals how macropinocytosis inhibitors affect membrane dynamics
Surface morphology live-cell imaging reveals how macropinocytosis inhibitors affect membrane dynamics
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表面形态活细胞成像揭示巨胞饮抑制剂如何影响膜动力学
DOI:
10.1016/j.electacta.2022.141783
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发表时间:
2023
影响因子:
6.6
通讯作者:
Shiku Hitoshi
中科院分区:
文献类型:
--
作者:
Ida Hiroki;Taira Noriko;Azuma Koichi;Kumatani Akichika;Akishiba Misao;Futaki Shiroh;Takahashi Yasufumi;Shiku Hitoshi
Macropinocytosis is a unique endocytic pathway that involves dynamic membrane ruffling and is important in various cellular functions beyond nutrient uptake. Due to its impact, macropinocytosis has been the subject of various studies and macropinocytosis inhibitors have been widely used. However, inhibitors exhibit offtarget effects and could be less specific for macropinocytosis, thereby affecting various cellular mechanisms with effects on nanoscale membrane dynamics that remain elusive. In this study, we revealed how five different inhibitors affect membrane dynamics before and after treatment using scanning ion conductance microscopic imaging on living cells. Our results indicated that cytochalasins and sodium azide exhibited similar slowing effects on horizontal ruffle movements, even though their inhibitory mechanisms are different. In contrast, ruffle deformation and elongation were less strongly inhibited compared to the movements along cell membrane direction. These results suggested the involvement of mechanisms beyond actin polymerization. The ruffles disappeared and the cell surface smoothened upon the 5-(N-ethyl-N-isopropyl)-Amiloride treatment. In the presence of wortmannin, we observed active ruffles but no cup-like structures. These findings and scanning ion conductance microscopy live-cell imaging would potentially contribute to a better understanding of inhibitor effects.
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影响因子:
5.3
作者:
Feng Xiao;Jingying Li;K. Huang;Xin Li;Yaping Xiong;Miao-jing Wu;Lei Wu;Wei Kuang;Shi-gang Lv;Lei Wu;Xin-gen Zhu;Hua Guo
通讯作者:
Feng Xiao;Jingying Li;K. Huang;Xin Li;Yaping Xiong;Miao-jing Wu;Lei Wu;Wei Kuang;Shi-gang Lv;Lei Wu;Xin-gen Zhu;Hua Guo
影响因子:
3.5
作者:
R. Walters;P. Hawkins;F. Cooke;A. Eguinoa;L. Stephens
通讯作者:
L. Stephens
DOI:
10.1158/1538-7445.am2015-1640
发表时间:
2015
期刊:
影响因子:
--
作者:
Matthew R Trendowski
通讯作者:
Matthew R Trendowski
影响因子:
17.1
作者:
Leitao SM;Drake B;Pinjusic K;Pierrat X;Navikas V;Nievergelt AP;Brillard C;Djekic D;Radenovic A;Persat A;Constam DB;Anders J;Fantner GE
通讯作者:
Fantner GE
影响因子:
3.8
作者:
L. Stevens;Katy Moffat;Lyndsay Cooke;K. Nomikou;P. Mertens;T. Jackson;K. Darpel
通讯作者:
K. Darpel