Detection of macromolecular inversion-induced structural changes in osteosarcoma cells by FTIR microspectroscopy

Area of Science:

• Biochemistry
• Cell Biology
• Materials Science

Background:

• Fourier transform infrared (FTIR) microspectroscopy offers a detailed biochemical fingerprint of cells.
• Osteosarcoma is a significant bone cancer, and understanding cellular responses to treatment is crucial.
• Polymeric invertible micellar assemblies (IMAs) are novel drug delivery systems with potential therapeutic applications.

Purpose of the Study:

• To investigate the chemical changes in 143B osteosarcoma cells upon treatment with IMAs and curcumin-loaded IMAs.
• To compare these changes with untreated osteosarcoma cells.
• To evaluate the efficacy of FTIR microspectroscopy combined with principal component analysis (PCA) in assessing cellular interactions with drug delivery systems.

Main Methods:

• FTIR microspectroscopy was employed to analyze the biochemical composition of 143B osteosarcoma cells.
• Cells were treated with polymeric IMAs and curcumin-loaded IMAs, and compared to untreated controls.
• Principal component analysis (PCA) was used to analyze FTIR spectral data and identify significant chemical alterations.

Main Results:

• Noticeable changes in the cell surface chemical structures were confirmed in the 1480-900 cm^-1 spectral region.
• PCA analysis revealed distinct clustering patterns for untreated, IMA-treated, and curcumin-IMA-treated cancer cells.
• FTIR microspectroscopy effectively differentiated between various treatment groups, indicating specific cellular responses.

Conclusions:

• The combination of FTIR microspectroscopy and PCA is an efficient method for analyzing biochemical changes in osteosarcoma cells.
• This approach can effectively determine the interactions between cancer cells and drug-loaded polymeric micellar assemblies.
• FTIR-PCA analysis provides valuable insights into the cellular effects of novel drug delivery systems.