Journal of Innovative Optical Health Sciences, Volume. 6, Issue 2, 1350014(2013)

RAMAN SPECTROSCOPIC STUDY ON PREDICTION OF TREATMENT RESPONSE IN CERVICAL CANCERS

S. RUBINA1, M. S. VIDYASAGAR2, and C. MURALI KRISHNA1、*
Author Affiliations
  • 1Chilakapati Laboratory, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre Kharghar 410210, India
  • 2Department of Radiotherapy and Oncology Shirdi Sai Baba Cancer Hospital, Kasturba Medical College Manipal University, Manipal 576 104, India
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    Concurrent chemoradiotherapy (CCRT) is the choice of treatment for locally advanced cervical cancers; however, tumors exhibit diverse response to treatment. Early prediction of tumor response leads to individualizing treatment regimen. Response evaluation criteria in solid tumors (RECIST), the current modality of tumor response assessment, is often subjective and carried out at the first visit after treatment, which is about four months. Hence, there is a need for better predictive tool for radioresponse. Optical spectroscopic techniques, sensitive to molecular alteration, are being pursued as potential diagnostic tools. Present pilot study aims to explore the fiber-optic-based Raman spectroscopy approach in prediction of tumor response to CCRT, before taking up extensive in vivo studies. Ex vivo Raman spectra were acquired from biopsies collected from 11 normal (148 spectra), 16 tumor (201 spectra) and 13 complete response (151 CR spectra), one partial response (8 PR spectra) and one nonresponder (8 NR spectra) subjects. Data was analyzed using principal component linear discriminant analysis (PC-LDA) followed by leaveone- out cross-validation (LOO-CV). Findings suggest that normal tissues can be efficiently classified from both pre- and post-treated tumor biopsies, while there is an overlap between preand post-CCRT tumor tissues. Spectra of CR, PR and NR tissues were subjected to principal component analysis (PCA) and a tendency of classification was observed, corroborating previous studies. Thus, this study further supports the feasibility of Raman spectroscopy in prediction of tumor radioresponse and prospective noninvasive in vivo applications.

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    S. RUBINA, M. S. VIDYASAGAR, C. MURALI KRISHNA. RAMAN SPECTROSCOPIC STUDY ON PREDICTION OF TREATMENT RESPONSE IN CERVICAL CANCERS[J]. Journal of Innovative Optical Health Sciences, 2013, 6(2): 1350014

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    Paper Information

    Received: Jan. 7, 2013

    Accepted: Jan. 27, 2013

    Published Online: Jan. 10, 2019

    The Author Email: KRISHNA C. MURALI (mchilakapati@actrec.gov.in)

    DOI:10.1142/s1793545813500144

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