Open Access Nano Express

Direct observation of CD4 T cell morphologies and their cross-sectional traction force derivation on quartz nanopillar substrates using focused ion beam technique

Dong-Joo Kim1, Gil-Sung Kim1, Jung-Hwan Hyung1, Won-Yong Lee2, Chang-Hee Hong1 and Sang-Kwon Lee2*

Author Affiliations

1 Basic Research Laboratory (BRL), Department of Semiconductor Science and Technology, Chonbuk National University, Jeonju 561-756, Republic of Korea

2 Department of Physics, Chung-Ang University, Seoul 156-756, Republic of Korea

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Nanoscale Research Letters 2013, 8:332  doi:10.1186/1556-276X-8-332

Published: 23 July 2013

Abstract

Direct observations of the primary mouse CD4 T cell morphologies, e.g., cell adhesion and cell spreading by culturing CD4 T cells in a short period of incubation (e.g., 20 min) on streptavidin-functionalized quartz nanopillar arrays (QNPA) using a high-content scanning electron microscopy method were reported. Furthermore, we first demonstrated cross-sectional cell traction force distribution of surface-bound CD4 T cells on QNPA substrates by culturing the cells on top of the QNPA and further analysis in deflection of underlying QNPA via focused ion beam-assisted technique.

Keywords:
Cell traction force; Cell adhesion; CD4 T cell; Cell migration; Focused ion beam