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A fluorescence-based assay for monitoring clinical drug resistance
- Source :
- Journal of Clinical Pathology. 65:1003-1007
- Publication Year :
- 2012
- Publisher :
- BMJ, 2012.
-
Abstract
- Background and aimsMultidrug resistance (MDR) limits effectiveness in treating malignancy by modifying internalisation and/or externalisation of drugs through cancer cell membranes. In this study we describe an assay to monitor patients’ responses to chemotherapy.MethodsThe assay is based on the fluorescent properties of doxorubicin alone as well as in combination with methotrexate, vinblastine, doxorubicin and cisplatin (MVAC). The slide-based cell imaging technique was first optimised using a panel of breast and urothelial cancer cell lines and then extended to fine needle breast aspiration biopsy and urine cytology.ResultsThe drug fluorescence behaviour observed on smears of clinical specimens is identical to that obtained using fixed cultured cells. The fluorescence of sensitive cells to chemotherapy is mainly localised in the nucleus, whereas resistant cells show a weak fluorescence signal localised in the cytoplasm. The difference in terms of fluorescence intensity is also highlighted through fluorescence spectra. ConclusionsThe results suggest that the assay provides clinically valuable information in predicting responses to doxorubicin and/or MVAC therapy. Originally set up on a confocal microscope, the assay was also effective using a standard epifluorescence microscope; as such it is technically simple, reliable and inexpensive.
- Subjects :
- Cytoplasm
Pathology
medicine.medical_specialty
Biopsy, Fine-Needle
Breast Neoplasms
Biology
Vinblastine
Fluorescence
Pathology and Forensic Medicine
Predictive Value of Tests
Cell Line, Tumor
Antineoplastic Combined Chemotherapy Protocols
Biopsy
medicine
Fluorescence microscope
Humans
Doxorubicin
Urine cytology
Cell Nucleus
Cisplatin
medicine.diagnostic_test
Optical Imaging
General Medicine
Drug Resistance, Multiple
Multiple drug resistance
Methotrexate
Urinary Bladder Neoplasms
Drug Resistance, Neoplasm
Cancer cell
Female
Drug Screening Assays, Antitumor
medicine.drug
Subjects
Details
- ISSN :
- 14724146 and 00219746
- Volume :
- 65
- Database :
- OpenAIRE
- Journal :
- Journal of Clinical Pathology
- Accession number :
- edsair.doi.dedup.....4e11601d42de9c7ed84943b329e2e13b