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Malignant tumor is the first of top ten death causes in Taiwan. The difficulty is not only the treatment of malignant tumor eradication, and it is more difficult to prevent cancer metastasis. It makes treatment time stretched and hard. The presence of circulating tumor cells (CTC), known as metastasis-derived cells in the circulation, is associated with a reduced survival in colorectal cancer patients. CTC are also an important indicator of tumor metastasis which contributes to the vast majority of cancer-related deaths. As a strong prognostic factor for overall survival in patients with metastatic cancers, much effort has been exerted to develop means to enumerate CTC and analyze their biological properties. Nevertheless, current approaches on CTC analysis suffered a number of drawbacks including high cost, labor extensive, inefficient, and damage to the isolated CTC. The main objective of this report is to improve the efficiency and sensitivity in identification and characterization of CTC derived from CRC. This report uses a fluid feature for detecting CTCs. Self –Assembled Cell Array(SACA) chip makes up with PC substrate. SACA chip rapidly make assemble cells become into a highly-dense monolayer under a microscope for in-parallel 2D image acquiring.. In the end CTCs can be count by the fluorescence microscope. It has IRB cooperated plan with hospital and allowed to get colorectal cancer and breast cancer patient blood sample to do the clinical research. This report provides an inexpensive and simple way to make chip and the process costs less than ten minutes. It also builds up the automatic imaging and in-situ cell capturing system to shorten the process time and isolate CTCs after process.
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