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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 PLoS+One
2015 ; 10
(10
): e0140935
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Qualitative and Quantitative Analysis of ROS-Mediated Oridonin-Induced
Oesophageal Cancer KYSE-150 Cell Apoptosis by Atomic Force Microscopy
#MMPMID26496199
Pi J
; Cai H
; Jin H
; Yang F
; Jiang J
; Wu A
; Zhu H
; Liu J
; Su X
; Yang P
; Cai J
PLoS One
2015[]; 10
(10
): e0140935
PMID26496199
show ga
High levels of intracellular reactive oxygen species (ROS) in cells is recognized
as one of the major causes of cancer cell apoptosis and has been developed into a
promising therapeutic strategy for cancer therapy. However, whether apoptosis
associated biophysical properties of cancer cells are related to intracellular
ROS functions is still unclear. Here, for the first time, we determined the
changes of biophysical properties associated with the ROS-mediated oesophageal
cancer KYSE-150 cell apoptosis using high resolution atomic force microscopy
(AFM). Oridonin was proved to induce ROS-mediated KYSE-150 cell apoptosis in a
dose dependent manner, which could be reversed by N-acetylcysteine (NAC)
pretreatment. Based on AFM imaging, the morphological damage and ultrastructural
changes of KYSE-150 cells were found to be closely associated with ROS-mediated
oridonin-induced KYSE-150 cell apoptosis. The changes of cell stiffness
determined by AFM force measurement also demonstrated ROS-dependent changes in
oridonin induced KYSE-150 cell apoptosis. Our findings not only provided new
insights into the anticancer effects of oridonin, but also highlighted the use of
AFM as a qualitative and quantitative nanotool to detect ROS-mediated cancer cell
apoptosis based on cell biophysical properties, providing novel information of
the roles of ROS in cancer cell apoptosis at nanoscale.