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IMEC, a leading European research center in nanotechnology, the Institüt für Mikrotechnik Mainz (IMM), one of the leading European research centers in microfluidics, and their partners within the European Sixth Framework Project MASCOT achieve a major milestone in the development of a lab-on-chip for the detection and therapy evaluation of breast cancer. This is the first time that a lab-on-chip system including many complex sample preparation steps and multiplexed detection was conceived and is being implemented. All modules for sample preprocessing and detection are ready for further miniaturization and integration in a single lab-on-chip platform. The system will be clinically validated in a breast cancer therapy study in Oslo.
Circulating tumor diagnostics is a promising methodology to individually follow up cancer patients in an early or advanced phase during therapy, thereby improving the medical doctor's therapy decisions. In the case of breast cancer, 5 ml of blood contains only 2 to 3 tumor cells. To detect cancer from blood, these rare circulating tumor cells need to be isolated, enriched and their genetic content has to be identified. Current diagnostics performed in medical laboratories are labor intensive, expensive and time-consuming. They require many sample preprocessing steps in different medical instruments so that the full analysis takes more than a day. A lab-on-chip system however can bring huge advantages both to the patient and the healthcare system. They enable a fast, easy-to-use, cost-effective test method which can be performed at regular times in a doctor's office or even near the patient's bed. Lab-on-chip systems are a labor-saving and minimally invasive solution for cancer cell detection, therapy selection and monitoring.
The project partners developed a modular platform where each module has its specific task and autonomy and as such can also be used for many different medical applications. The first module is the incubation module performing the mixing of the blood sample with functionalized magnetic beads which specifically bind the tumor cells. The second module is used for tumor cell isolation and counting using a combination of dielectrophoresis and magnetic sensing with single cell sensitivity. In the third module, the amplification module, the cell wall of the tumor cells is destroyed and the genetic material (i.e. the mRNA) is extracted and amplified based on multiplex ligation dependent probe amplification (MLPA).
Within this module, specific assays amplify about 20 markers that are expressed in breast carcinoma cells. In the final detection module, the amplified genetic material is detected using an array of electrochemical sensors. The different building blocks have been developed and validated on spiked blood samples. The modules are now ready for further hetero-integration into a single lab-on-chip. By miniaturizing and merging the microfluidic and electronic functionalities the reliability and accuracy of the patient's analysis will be improved. The clinical use of the system will be evaluated to compare it to more conventional approaches in a breast cancer therapy follow-up study.
Within the framework of the MASCOT project, IMEC collaborates with the Institut für Mikrotechnik Mainz (Germany), AdnaGenAG (Germany), Universitat Rovira i Virgili in Sweden, NorwegianRadium Hospital (Norway), MRC Holland (The Netherlands), and FuijerebioDiagnosticsAB (Spain). The project's aim is to develop an integrated microsystem for the magnetic isolation and analysis of single circulating tumor cells for oncology diagnostics and therapy follow-up. MASCOT was partly funded by the European Commission (IST-027652).
IMEC performs world-leading research in nanotechnology. IMEC leverages its scientific knowledge with the innovative power of its industrial partners. In ICT, healthcare and energy, IMEC delivers industry-relevant technology solutions. In a unique high-tech environment, IMEC’s international top talent is committed to providing the building blocks for a better life in a sustainable society.
IMEC is headquartered in Leuven, Belgium, and has offices in Belgium, the Netherlands, Taiwan, US, China and Japan. Its staff of more than 1,650 people include over 550 industrial residents and guest researchers. In 2008, IMEC's revenue (P&L) was 270 million euro.
Further information on IMEC can be found at www.imec.be.
IMEC is a registered trademark for the activities of IMEC International (a legal entity set up under Belgian law as a "stichting van openbaar nut"), IMEC in Belgium (IMEC vzw supported by the Flemish Government), stichting IMEC Nederland (IMEC-NL) and IMEC Taiwan Co. (IMEC-TW).
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