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Investigation of depth-resolved nanoscale structural changes in regulated cell proliferation and chromatin decondensation

Uttam, Shikhar
; 
Bista, Rajan K.
; 
Staton, Kevin
; 
Alexandrov, Sergey
; 
Choi, Serah
; 
Bakkenist, Christopher J.
; 
Hartman, Douglas J.
; 
Brand, Randall E.
; 
Liu, Yang
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http://hdl.handle.net/10379/7176
 https://doi.org/10.13025/15672
Publication Date
2013
Keywords
DOMAIN PHASE MICROSCOPY, LIGHT-SCATTERING, SPECTROSCOPIC MICROSCOPY, BIOLOGICAL CELLS, REFRACTIVE-INDEX, CANCER, DIAGNOSIS, DYNAMICS, MARKERS
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Citation
Uttam, S,Bista, RK,Staton, K,Alexandrov, S,Choi, S,Bakkenist, CJ,Hartman, DJ,Brand, RE,Liu, Y (2013) 'Investigation of depth-resolved nanoscale structural changes in regulated cell proliferation and chromatin decondensation'. Biomedical Optics Express, 4 :596-613. doi: 10.1364/BOE.4.000596
Abstract
We present depth-resolved spatial-domain low-coherence quantitative phase microscopy, a simple approach that utilizes coherence gating to construct a depth-resolved structural feature vector quantifying sub-resolution axial structural changes at different optical depths within the sample. We show that this feature vector is independent of sample thickness variation, and identifies nanoscale structural changes in clinically prepared samples. We present numerical simulations and experimental validation to demonstrate the feasibility of the approach. We also perform experiments using unstained cells to investigate the nanoscale structural changes in regulated cell proliferation through cell cycle and chromatin decondensation induced by histone acetylation. (C) 2013 Optical Society of America
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National Cancer Institute
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Attribution-NonCommercial-NoDerivs 3.0 Ireland
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School of Physics (Scholarly Articles)