title: Diagnosis of colorectal cancer using Raman spectroscopy of laser-trapped single living epithelial cells.
abstract: A single-cell diagnostic technique for epithelial cancers is developed by utilizing laser trapping and Raman spectroscopy to differentiate cancerous and normal epithelial cells. Single-cell suspensions were prepared from surgically removed human colorectal tissues following standard primary culture protocols and examined in a near-infrared laser-trapping Raman spectroscopy system, where living epithelial cells were investigated one by one. A diagnostic model was built on the spectral data obtained from 8 patients and validated by the data from 2 new patients. Our technique has potential applications from epithelial cancer diagnosis to the study of cell dynamics of carcinogenesis.
authors.affiliation: Key Laboratory for Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, China. kunchen@siom.ac.cn
authors.forename: Kun
authors.initials: K
authors.lastname: Chen
authors.forename: Yejun
authors.initials: Y
authors.lastname: Qin
authors.forename: Feng
authors.initials: F
authors.lastname: Zheng
authors.forename: Menghong
authors.initials: M
authors.lastname: Sun
authors.forename: Daren
authors.initials: D
authors.lastname: Shi
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis* / Q000378:metabolism*; D000328:Adult; D000368:Aged; D014408:Biomarkers, Tumor / Q000032:analysis*; D015179:Colorectal Neoplasms / Q000175:diagnosis* / Q000378:metabolism*; D003936:Diagnosis, Computer-Assisted / Q000379:methods*; D005260:Female; D006801:Humans; D007413:Intestinal Mucosa / Q000378:metabolism / Q000473:pathology; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013059:Spectrum Analysis, Raman / Q000379:methods*; D014407:Tumor Cells, Cultured
chemical_list: D014408:Biomarkers, Tumor