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Gold Nanoparticles in Single-Cell Analysis for Surface Enhanced Raman Scattering
Mine Altunbek1, Gamze Kuku2, Mustafa Culha3
1Department of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, Atasehir, Istanbul 34755, Turkey. m.altunbek@gmail.com.
Abstract:
The need for new therapeutic approaches in the treatment of challenging diseases such as cancer, which often consists of a highly heterogeneous and complex population of cells, brought up the idea of analyzing single cells. The development of novel techniques to analyze single cells has been intensively studied to fully understand specific alternations inducing abnormalities in cellular function. One of the techniques used for single cell analysis is surface-enhanced Raman spectroscopy (SERS) in which a noble metal nanoparticle is used to enhance Raman scattering. Due to its low toxicity and biocompatibility, gold nanoparticles (AuNPs) are commonly preferred as SERS substrates in single cell analysis. The intracellular uptake, localization and toxicity issues of AuNPs are the critical points for interpretation of data since the obtained SERS signals originate from molecules in close vicinity to AuNPs that are taken up by the cells. In this review, the AuNP-living cell interactions, cellular uptake and toxicity of AuNPs in relation to their physicochemical properties, and surface-enhanced Raman scattering from single cells are discussed.
Insights
Analyzing single cells with gold nanoparticles (AuNPs) using surface-enhanced Raman spectroscopy (SERS) offers insights into complex diseases like cancer. Understanding AuNP interactions within cells is crucial for accurate SERS data interpretation.
Area of Science:
- Biotechnology
- Nanotechnology
- Spectroscopy
Background:
- Challenging diseases like cancer involve complex, heterogeneous cell populations, necessitating advanced single-cell analysis techniques.
- Surface-enhanced Raman spectroscopy (SERS) is a powerful tool for single-cell analysis, utilizing noble metal nanoparticles to enhance Raman scattering.
- Gold nanoparticles (AuNPs) are favored SERS substrates due to their biocompatibility and low toxicity.
Purpose of the Study:
- To review the interactions between gold nanoparticles (AuNPs) and living cells for single-cell analysis.
- To discuss the cellular uptake and toxicity of AuNPs, considering their physicochemical properties.
- To explore the implications of AuNP behavior on surface-enhanced Raman scattering (SERS) data from single cells.
Main Methods:
- Review of literature on gold nanoparticle-cell interactions.
- Analysis of studies concerning AuNP cellular uptake and toxicity.
- Examination of surface-enhanced Raman spectroscopy (SERS) applications in single-cell analysis.
Main Results:
- Physicochemical properties of AuNPs significantly influence their intracellular uptake, localization, and potential toxicity.
- Accurate interpretation of SERS signals relies on understanding the proximity of AuNPs to cellular molecules.
- AuNP-cell interactions are critical determinants of SERS data reliability in single-cell studies.
Conclusions:
- Understanding AuNP behavior within living cells is essential for effective application of SERS in single-cell analysis.
- The review highlights the importance of characterizing AuNP properties to optimize SERS-based diagnostics and therapeutics.
- Further research into AuNP-cell dynamics will enhance the utility of SERS for studying cellular abnormalities.
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