Drug-Eluting Microarrays for Cell-Based Screening of Chemical-Induced Apoptosis

详细信息    查看全文

• 作者：Cheong Hoon Kwon ; Ian Wheeldon ; Nezamoddin N. Kachouie ; Seung Hwan Lee ; Hojae Bae ; Shilpa Sant ; Junji Fukuda ; Jeong Won Kang ; Ali Khademhosseini
• 刊名：Analytical Chemistry
• 出版年：2011
• 出版时间：June 1, 2011
• 年：2011
• 卷：83
• 期：11
• 页码：4118-4125
• 全文大小：1021K
• 年卷期：v.83,no.11(June 1, 2011)
• ISSN：1520-6882

文摘

Traditional high-throughput screening (HTS) is carried out in centralized facilities that require extensive robotic liquid and plate handling equipment. This model of HTS is restrictive as such facilities are not accessible to many researchers. We have designed a simple microarray platform for cell-based screening that can be carried out at the benchtop. The device creates a microarray of 2100 individual cell-based assays in a standard microscope slide format. A microarray of chemical-laden hydrogels addresses a matching array of cell-laden microwells thus creating a microarray of sealed microscale cell cultures each with unique conditions. We demonstrate the utility of the device by screening the extent of apoptosis and necrosis in MCF-7 breast cancer cells in response to exposure to a small library of chemical compounds. From a set of screens we produced a rank order of chemicals that preferentially induce apoptosis over necrosis in MCF-7 cells. Treatment with doxorubicin induced high levels of apoptosis in comparison with staurosporine, ethanol, and hydrogen peroxide, whereas treatment with 100 渭M ethanol induced minimal apoptosis with high levels of necrosis. We anticipate broad application of the device for various research and discovery applications as it is easy to use, scalable, and can be fabricated and operated with minimal peripheral equipment.