北京大学定量生物学中心

学术报告

题 目： Multivalent binding and selectivity in biology 

报告人：Prof. Dr. Jure Dobnikar

Institute of Physics, Chinese Academy of Sciences, Beijing, China

时 间：2016年10月10日13:00-14:00

地 点：北京大学老化学楼东配楼一层101会议室

主持人：刘峰研究员

摘 要:

One of the key challenges in biomedicine and nanoscience is to design ligand-coated carriers that can bind selectively to surfaces that display the cognate receptors either above a threshold concentration or in a specific geometric arrangement. Such carriers would enable selective targeting, which is crucial in biomedical applications such as drug delivery. Similarly, many biological processes rely on chemical activation based on molecular or marcomolecular recognition. In recent years, it has been repeatedly demonstrated that "super selectivity" can be achieved with nanoparticles that can form multiple weak reversible bonds to a large number of ligands simultaneously. In such systems, the fraction of bound particles varies sharply with the receptor concentration and nanoparticles can be designed such that they approach the on-off binding behavior ideal for receptor-concentration selective targeting. I will discuss our recent work on cell targeting, molecular recognition in polymer networks, and immune system activation by DNA-peptide complexes recruiting TLR9 receptors.

报告人简介：

Prof. Jure Dobnikar is the associate professor from the institute of Physics, CAS. He got his PhD degree in physics at University of Ljubljana, Slovenia in 2001. His main research interests are in colloidal interactions，dynamic self-assembly，multivalent binding in biological systems，bacterial motility and physics of bacterial populations.