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2017 ; 7
(1
): 2296
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Revealing chemical processes and kinetics of drug action within single living
cells via plasmonic Raman probes
#MMPMID28536451
Li SS
; Guan QY
; Meng G
; Chang XF
; Wei JW
; Wang P
; Kang B
; Xu JJ
; Chen HY
Sci Rep
2017[May]; 7
(1
): 2296
PMID28536451
show ga
Better understanding the drug action within cells may extend our knowledge on
drug action mechanisms and promote new drugs discovery. Herein, we studied the
processes of drug induced chemical changes on proteins and nucleic acids in human
breast adenocarcinoma (MCF-7) cells via time-resolved plasmonic-enhanced Raman
spectroscopy (PERS) in combination with principal component analysis (PCA). Using
three popular chemotherapy drugs (fluorouracil, cisplatin and camptothecin) as
models, chemical changes during drug action process were clearly discriminated.
Reaction kinetics related to protein denaturation, conformational modification,
DNA damage and their associated biomolecular events were calculated. Through rate
constants and reaction delay times, the different action modes of these drugs
could be distinguished. These results may provide vital insights into
understanding the chemical reactions associated with drug-cell interactions.