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2014 ; 19
(11
): 111605
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Raman and coherent anti-Stokes Raman scattering microscopy studies of changes in
lipid content and composition in hormone-treated breast and prostate cancer
cells
#MMPMID24933682
Potcoava MC
; Futia GL
; Aughenbaugh J
; Schlaepfer IR
; Gibson EA
J Biomed Opt
2014[]; 19
(11
): 111605
PMID24933682
show ga
Increasing interest in the role of lipids in cancer cell proliferation and
resistance to drug therapies has motivated the need to develop better tools for
cellular lipid analysis. Quantification of lipids in cells is typically done by
destructive chromatography protocols that do not provide spatial information on
lipid distribution and prevent dynamic live cell studies. Methods that allow the
analysis of lipid content in live cells are therefore of great importance. Using
micro-Raman spectroscopy and coherent anti-Stokes Raman scattering (CARS)
microscopy, we generated a lipid profile for breast (T47D, MDA-MB-231) and
prostate (LNCaP, PC3) cancer cells upon exposure to medroxyprogesterone acetate
(MPA) and synthetic androgen R1881. Combining Raman spectra with CARS imaging, we
can study the process of hormone-mediated lipogenesis. Our results show that
hormone-treated cancer cells T47D and LNCaP have an increased number and size of
intracellular lipid droplets and higher degree of saturation than untreated
cells. MDA-MB-231 and PC3 cancer cells showed no significant changes upon
treatment. Principal component analysis with linear discriminant analysis of the
Raman spectra was able to differentiate between cancer cells that were treated
with MPA, R1881, and untreated.