基于微流控平臺(tái)的細(xì)胞共培養(yǎng)及生物微環(huán)境模擬的研究
[Abstract]:Microfluidic chip technology has been widely used in cell related research recently because of its advantages such as less consumption of sample reagent, diversity of structure and function, high degree of integration and close to cell scale. Significant research progress has been made by combining different analysis and detection methods and integrating different functional structure units. The biggest advantage of microfluidic chip is its integrated function, which can integrate many different cells or tissues into one system in an orderly way, which is also an important development direction of cell related research. Co-culture and interaction of several related cells in vivo can better maintain the function and biological characteristics of the cells, which is of great significance for the establishment of a more perfect biological model in vitro. In this thesis, we have carried out a series of studies on cell co-culture on microfluidic chips. First of all, we review the development of microfluidic technology and its application in cell research, especially in cell co-culture and biological microenvironment simulation. The advantages and significance of cell co-culture on microfluidic chip were analyzed and demonstrated. Secondly, hepatoma cells and breast cancer cells were co-cultured on microfluidic chip, and a liver-tumor model on microfluidic chip was established. The metabolism and action of capecitabine, a precursor drug, was successfully realized. The raw drug and its intermediate metabolites were detected by mass spectrometry. Using this platform, not only can the activity of cell state, proliferation detection and direct observation by microscope, but also the signal molecules or intermediate products in the system can be detected and identified by mass spectrometry. Thirdly, a method of using inkjet to co-culture different cells in microfluidic chip was developed, which successfully printed and integrated the hepatoma cells and glioma cells into the microfluidic chip at the same time. It is used for metabolism and diffusion of precursor drugs. This method can greatly improve the efficiency of accurate location and co-culture of many cells in microfluidic chips, and has the advantages of convenience, efficiency, automation and so on. Fourthly, glioma cells, endothelial cells and macrophages were co-cultured on microfluidic chips. The microenvironment of glioma was simulated to a certain extent, and the interaction between cells, the morphological changes and phenotypic changes of glioma cells in microenvironment were also studied. At the same time, we observed the epithelium-mesenchymal transformation of tumor cells in microenvironment, and also detected the migration of tumor cells. The phenotypic changes of macrophages in microenvironment were analyzed by cytokine changes.
【學(xué)位授予單位】:清華大學(xué)
【學(xué)位級(jí)別】:博士
【學(xué)位授予年份】:2016
【分類號(hào)】:Q813.1
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