In the drug therapy of tumor,efficient and stable drug screening platforms are required since the drug efficacy varies individually.Here,inspired by the microstructures of hepatic lobules,in which hepatocytes obtain n...In the drug therapy of tumor,efficient and stable drug screening platforms are required since the drug efficacy varies individually.Here,inspired by the microstructures of hepatic lobules,in which hepatocytes obtain nutrients from both capillary vessel and the central vein,we present a novel hierarchical hydrogel system with ordered micro-nano structure for liver cancer-on-a-chip construction and drug screening.The hierarchical hydrogel system was fabricated by using pregel to fill and replicate selfassembled colloidal crystal arrays and microcolumn array template.Due to the synergistic effect of its interconnected micro-nano structures,the resultant system could not only precisely control the size of cell spheroids but also realize adequate nutrient supply of cell spheroids.We have demonstrated that by integrating the hierarchical hydrogel system into a multichannel concentration gradients microfluidic chip,a functional liver cancer-on-a-chip could be constructed for high-throughput drug screening with good repeatability and high accuracy.These results indicated that the hierarchical hydrogel system and its derived liver cancer-on-a-chip are ideal platforms for drug screening and have great application potential in the field of personalized medicine.展开更多
In the drug therapy of tumor,efficient and stable drug screening platforms are required since the drug efficacy varies individually.Here,inspired by the microstructures of hepatic lobules,in which hepatocytes obtain n...In the drug therapy of tumor,efficient and stable drug screening platforms are required since the drug efficacy varies individually.Here,inspired by the microstructures of hepatic lobules,in which hepatocytes obtain nutrients from both capillary vessel and the central vein,we present a novel hierarchical hydrogel system with ordered micro-nano structure for liver cancer-on-a-chip construction and drug screening.The hierarchical hydrogel system was fabricated by using pregel to fill and replicate self-assembled colloidal crystal arrays and microcolumn array template.Due to the synergistic effect of its interconnected micro-nano structures,the resultant system could not only precisely control the size of cell spheroids but also realize adequate nutrient supply of cell spheroids.We have demonstrated that by integrating the hierarchical hydrogel system into a multichannel concentration gradients microfluidic chip,a functional liver cancer-on-a-chip could be constructed for high-throughput drug screening with good repeatability and high accuracy.These results indicated that the hierarchical hydrogel system and its derived liver cancer-on-a-chip are ideal platforms for drug screening and have great application potential in the field of personalized medicine.展开更多
基金supported by the National Key Research and Development Program of China(2020YFA0908200)the Strategic Priority Research Program of the Chinese Academy of Science(XDA16021103)+1 种基金the National Natural Science Foundation of China(52073060 and 61927805)the Shenzhen Fundamental Research Program(JCYJ20190813152616459).
文摘In the drug therapy of tumor,efficient and stable drug screening platforms are required since the drug efficacy varies individually.Here,inspired by the microstructures of hepatic lobules,in which hepatocytes obtain nutrients from both capillary vessel and the central vein,we present a novel hierarchical hydrogel system with ordered micro-nano structure for liver cancer-on-a-chip construction and drug screening.The hierarchical hydrogel system was fabricated by using pregel to fill and replicate selfassembled colloidal crystal arrays and microcolumn array template.Due to the synergistic effect of its interconnected micro-nano structures,the resultant system could not only precisely control the size of cell spheroids but also realize adequate nutrient supply of cell spheroids.We have demonstrated that by integrating the hierarchical hydrogel system into a multichannel concentration gradients microfluidic chip,a functional liver cancer-on-a-chip could be constructed for high-throughput drug screening with good repeatability and high accuracy.These results indicated that the hierarchical hydrogel system and its derived liver cancer-on-a-chip are ideal platforms for drug screening and have great application potential in the field of personalized medicine.
基金supported by the National Key Research and Development Program of China(2020YFA0908200)the Strategic Priority Research Program of the Chinese Acad.emy of Science(XDA16021103)+1 种基金the National Natural Science Foundation of China(52073060 and 61927805)andthe Shenzhen Fundamental Research Program(JCYJ20190813152616459).
文摘In the drug therapy of tumor,efficient and stable drug screening platforms are required since the drug efficacy varies individually.Here,inspired by the microstructures of hepatic lobules,in which hepatocytes obtain nutrients from both capillary vessel and the central vein,we present a novel hierarchical hydrogel system with ordered micro-nano structure for liver cancer-on-a-chip construction and drug screening.The hierarchical hydrogel system was fabricated by using pregel to fill and replicate self-assembled colloidal crystal arrays and microcolumn array template.Due to the synergistic effect of its interconnected micro-nano structures,the resultant system could not only precisely control the size of cell spheroids but also realize adequate nutrient supply of cell spheroids.We have demonstrated that by integrating the hierarchical hydrogel system into a multichannel concentration gradients microfluidic chip,a functional liver cancer-on-a-chip could be constructed for high-throughput drug screening with good repeatability and high accuracy.These results indicated that the hierarchical hydrogel system and its derived liver cancer-on-a-chip are ideal platforms for drug screening and have great application potential in the field of personalized medicine.
