项目名称: 新型生物芯片固定化技术的研究与应用
项目编号: No.21202137
项目类型: 青年科学基金项目
立项/批准年度: 2013
项目学科: 有机化学
项目作者: 孙红燕
作者单位: 香港城市大学深圳研究院
项目金额: 25万元
中文摘要: 近二十年来,芯片技术取得了长足的发展,生物芯片的触角延伸至许多领域,如医学、药物学、食品学、司法鉴定学等,生物芯片技术为这些领域带来了巨大的创新机制与生命力。生物芯片的成功制备在很大程度上取决于芯片的固定化技术,我们致力于开发一项快速、高效且具备化学选择性的新型生物芯片固定技术。根据研究方案,我们将把Src蛋白来源的磷酸化多肽固定在载体表面,并研究不同酪氨酸磷酸酶对这些多肽底物的去磷酸化能力,这一研究将为探索酪氨酸磷酸酶对Src来源的多肽底物选择性和酪氨酸磷酸酶抑制剂的设计提供重要信息。另一方面,我们将把这一技术应用于蛋白质在芯片上的固定。我们将通过化学合成及分子生物学的手段实现Src蛋白的半合成,再将蛋白固定在芯片上,研究不同酪氨酸磷酸酶对蛋白底物的去磷酸化功能。通过该项研究,我们将能够发现新的酪氨酸磷酸酶对Src蛋白活性的调控机制,为揭示细胞信号传导提供关键信息。
中文关键词: 生物芯片;固定化技术;多肽芯片;生物正交反应;蛋白芯片
英文摘要: The last 20 years has witnessed tremendous development in microarray technology. Microarray can be employed to screen virtually any type of molecules, including DNA, small molecules, proteins and even live cells and tissue. Recently microarray technology has found extensive applications in many fields such as medicine, pharmaceutical science, food science and forensic science. Immobilization technology plays a critical role in the successful preparation of biochip. The physical and chemical properties of the solid support surface affect the immobilization rate dramatically. Herein we seek to develop a fast, highly efficient and chemoselective method to immobilize biomolecules site specifically onto array. We plan to synthesize a focused phosphopeptide library, whose sequence is based on Src kinase. We will immobilize these peptides onto array and study their dephosphorylation activity against various protein tyrosine phosphatases(PTPs). This approach can potentially serve as a useful tool to discover new PTP substrate and provide useful information for inhibitor design. Lastly we want to apply this approach to immobilize proteins onto array. Through the combination of organic synthesis and molecular biology approach, we will generate a full length Src protein via semisynthesis strategy. Following that, we will i
英文关键词: microarray;immobilization technology;peptide array;bioorthogonal reaction;protein array