Journal
BIOMOLECULAR ENGINEERING
Volume 17, Issue 3, Pages 95-111Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S1389-0344(00)00073-3
Keywords
minimal residual cancer cells; solid tumors; tumor cell purification; prognosis; drug targeting; therapy monitoring
Funding
- Cancer Research UK [A7851] Funding Source: Medline
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The failure to reduce the mortality of patients with solid tumors is mainly a result of the early dissemination of cancer cells to secondary sites, which is usually missed by conventional diagnostic procedures used for tumor staging. PCR was shown to be superior to conventional techniques in detecting circulating tumor calls and micrometastases allowing the identification or one tumor cell in up to 10(7) normal cells in various sources such as blood, bone marrow. lymph nodes, urine or stool. The methods used are based on the detection of either genomic alterations in oncogenes and tumor suppressor genes or on the mRNA expression of tissue-specific and tumor-associated genes. The additional implementation of techniques fur cancer cell purification had a significant impact on analytical sensitivity and specificity of MRCC detection. For patients with e.g. melanoma, breast, colorectal or prostate cancer it was demonstrated that the presence of disseminated cancer cells defines a subgroup of patients with reduced rime to recurrence. The possibility to use easily accessible body fluids as a source for MRCC detection enables longitudinal observations of the disease. In this review we discuss the potential of molecular characterization of MRCC as a tool to improve prognostication, therapy selection and drug targeting as well as therapy monitoring, (C) 2001 Elsevier Science B.V. All rights reserved.
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