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Author:

Niu, Dong (Niu, Dong.) | Zhang, Yanli (Zhang, Yanli.) | Chen, Jinlan (Chen, Jinlan.) | Li, Dachao (Li, Dachao.) | He, Chunmeng (He, Chunmeng.) | Liu, Hongzhong (Liu, Hongzhong.)

Indexed by:

SCIE Scopus Web of Science

Abstract:

Mechanotransduction is the process by which cells convert external forces and physical constraints into biochemical signals that control several aspects of cellular behavior. A number of approaches have been proposed to investigate the mechanisms of mechanotransduction; however, it remains a great challenge to develop a platform for dynamic multivariate mechanical stimulation of single cells and small colonies of cells. In this study, we combined polydimethylsiloxane (PDMS) and PDMS/Mxene nanoplatelets (MNPs) to construct a soft bilayer nanocomposite for extracellular mechanical stimulation. Fast backlash actuation of the bilayer as a result of near-infrared irradiation caused mechanical force stimulation of cells in a controllable manner. The excellent controllability of the light intensity and frequency allowed backlash bending acceleration and frequency to be manipulated. As gastric gland carcinoma cell line MKN-45 was the research subject, mechanical force loading conditions could trigger apoptosis of the cells in a stimulation duration time-dependent manner. Cell apoptotic rates were positively related to the duration time. In the case of 6 min mechanical force loading, apoptotic cell percentage rose to 34.46% from 5.5% of the control. This approach helps apply extracellular mechanical forces, even with predesigned loading cycles, and provides a solution to study cell mechanotransduction in complex force conditions. It is also a promising therapeutic technique for combining physical therapy and biomechanics.

Keyword:

adjustability controllability extracellular force loading mechanotransduction Mxene photomechanical soft bilayer

Author Community:

  • [ 1 ] [Niu, Dong]Xi An Jiao Tong Univ, State Key Lab Mfg Syst Engn, Xian 710049, Peoples R China
  • [ 2 ] [Chen, Jinlan]Xi An Jiao Tong Univ, State Key Lab Mfg Syst Engn, Xian 710049, Peoples R China
  • [ 3 ] [Li, Dachao]Xi An Jiao Tong Univ, State Key Lab Mfg Syst Engn, Xian 710049, Peoples R China
  • [ 4 ] [He, Chunmeng]Xi An Jiao Tong Univ, State Key Lab Mfg Syst Engn, Xian 710049, Peoples R China
  • [ 5 ] [Liu, Hongzhong]Xi An Jiao Tong Univ, State Key Lab Mfg Syst Engn, Xian 710049, Peoples R China
  • [ 6 ] [Zhang, Yanli]Xizang Minzu Univ, Med Coll, Key Lab Mol Genet Mech & Intervent Res High Altit, Xianyang 712082, Peoples R China
  • [ 7 ] [Liu, Hongzhong]Xi An Jiao Tong Univ, Joint Key Lab Graphene, Xian 710049, Peoples R China

Reprint Author's Address:

  • [Liu, H.]State Key Laboratory for Manufacturing Systems Engineering, China;;

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Source :

MATERIALS

Year: 2022

Issue: 19

Volume: 15

3 . 6 2 3

JCR@2020

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:7

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 10

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