TEM Structure, Nanomechanical Property, and Adhesive Force of Magnetron-Sputtered Cr-DLC Coating on a Nitrided Ti6Al4V Alloy

Author(s):  
Kong Weicheng ◽  
Li Kangmei ◽  
Hu Jun
2020 ◽  
Author(s):  
Debayan Dasgupta ◽  
Dharma Pally ◽  
Deepak K. Saini ◽  
Ramray Bhat ◽  
Ambarish Ghosh

The dissemination of cancer is brought about by continuous interaction of malignant cells with their surrounding tissue microenvironment. Understanding and quantifying the remodeling of local extracellular matrix (ECM) by invading cells can therefore provide fundamental insights into the dynamics of cancer dissemination. In this paper, we use an active and untethered nanomechanical tool, realized as magnetically driven nanorobots, to locally probe a 3D tissue culture microenvironment consisting of cancerous and non-cancerous epithelia, embedded within reconstituted basement membrane (rBM) matrix. Our assay is designed to mimic the in vivo histopathological milieu of a malignant breast tumor. We find that nanorobots preferentially adhere to the ECM near cancer cells: this is due to the distinct charge conditions of the cancer-remodeled ECM. Surprisingly, quantitative measurements estimate that the adhesive force increases with the metastatic ability of cancer cell lines, while the spatial extent of the remodeled ECM was measured to be approximately 40 μm for all cancer cell lines studied here. We hypothesized and experimentally confirmed that specific sialic acid linkages specific to cancer-secreted ECM may be a major contributing factor in determining this adhesive behavior. The findings reported here can lead to promising applications in cancer diagnosis, quantification of cancer aggression, in vivo drug delivery applications, and establishes the tremendous potential of magnetic nanorobots for fundamental studies of cancer biomechanics.


2006 ◽  
Vol 43 (11) ◽  
pp. 559-574
Author(s):  
M. N. Mungole ◽  
M. Surender ◽  
S. Bhargava
Keyword(s):  

2019 ◽  
Vol 45 (9) ◽  
pp. 12461-12468 ◽  
Author(s):  
Minpeng Dong ◽  
Yebiao Zhu ◽  
Chunting Wang ◽  
Lei Shan ◽  
Jinlong Li

Author(s):  
Gözde Çelebi Efe ◽  
Elif Yenilmez ◽  
İbrahim Altinsoy ◽  
Serbülent Türk ◽  
Cuma Bindal

Vacuum ◽  
2021 ◽  
pp. 110350
Author(s):  
Hulin Wu ◽  
Ping Gong ◽  
Suying Hu ◽  
Lin Xiang ◽  
Enlei Wang ◽  
...  

2021 ◽  
Vol 1950 (1) ◽  
pp. 012046
Author(s):  
Ashutosh Roushan ◽  
U. Srinivas Rao ◽  
Karali Patra ◽  
Priyabrata Sahoo
Keyword(s):  

Sign in / Sign up

Export Citation Format

Share Document