1. Super-Long SERS Active Single Silver Nanowires for Molecular Imaging in 2D and 3D Cell Culture Models
- Author
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Xiao-Tong Pan, Xuan-Ye Yang, Tian-Qi Mao, Kang Liu, Zao-Zao Chen, Li-Na Ji, De-Chen Jiang, Kang Wang, Zhong-Ze Gu, and Xing-Hua Xia
- Subjects
Ag nanowire ,cell culture model ,SERS ,machine learning ,spatial resolution ,Silver ,Nanowires ,Clinical Biochemistry ,Biomedical Engineering ,General Medicine ,Spectrum Analysis, Raman ,Molecular Imaging ,Analytical Chemistry ,Nucleic Acids ,Cell Culture Techniques, Three Dimensional ,Instrumentation ,Engineering (miscellaneous) ,Biotechnology - Abstract
Establishing a systematic molecular information analysis strategy for cell culture models is of great significance for drug development and tissue engineering technologies. Here, we fabricated single silver nanowires with high surface-enhanced Raman scattering activity to extract SERS spectra in situ from two-dimensional (2D) and three-dimensional (3D) cell culture models. The silver nanowires were super long, flexible and thin enough to penetrate through multiple cells. A single silver nanowire was used in combination with a four-dimensional microcontroller as a cell endoscope for spectrally analyzing the components in cell culture models. Then, we adopted a machine learning algorithm to analyze the obtained spectra. Our results show that the abundance of proteins differs significantly between the 2D and 3D models, and that nucleic acid-rich and protein-rich regions can be distinguished with satisfactory accuracy.
- Published
- 2022