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Nanoscale cellular changes in field carcinogenesis detected by partial wave spectroscopy
Hariharan Subramanian1, Hemant K Roy, Prabhakar Pradhan
1Biomedical Engineering Department, Northwestern University, Evanston, Illinois, USA.
Cancer Research
|June 25, 2009
Summary
Partial wave spectroscopy (PWS) reveals nanoscale architectural changes in cancer cells and surrounding normal cells. This technique can identify tumors by detecting widespread nanoarchitectural alterations in organ tissues.
Area of Science:
- Biophysics
- Cancer Research
- Nanotechnology
Background:
- Traditional optical microscopy is limited by diffraction, hindering nanoscale understanding of cell morphology in disease.
- Nanoscale alterations in cell architecture are crucial in carcinogenesis but previously difficult to quantify.
Purpose of the Study:
- To introduce and utilize partial wave spectroscopy (PWS) for nanoscale quantification of cell structure.
- To investigate nanoscale architectural changes in tumor and non-tumor cells during carcinogenesis.
Main Methods:
- Development and application of partial wave spectroscopy (PWS), an optical microscopy technique.
- Quantification of statistical properties of cell structure at the nanoscale.
- Analysis of colon, pancreatic, and lung cancer tissues.
Main Results:
- PWS detected increased disorder strength in the nanoscale architecture of tumor cells.
- Significantly, PWS also revealed similar nanoscale architectural alterations in microscopically normal cells distant from the tumor.
- These organ-wide nanoarchitectural changes were observed across multiple cancer types (colon, pancreatic, lung).
Conclusions:
- Carcinogenesis involves widespread, organ-wide alterations in cell nanoarchitecture, affecting even morphologically normal-appearing cells.
- PWS offers a novel method for detecting these nanoscale changes.
- PWS can potentially identify patients with malignant or premalignant tumors by analyzing accessible tissue sites.
