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齐湘兵,北京生命科学研究所(National Institute of Biological Sciences,Beijing)化学中心主任,清华大学生物医学交叉研究院研究员,中国医学科学院协和医科大学博士生导师。2004年取得同济大学有机化学理学硕士学位后入职中科院上海有机化学研究所马大为实验室任职研究助理。2009年6月美国得克萨斯大学西南医学中心(University of Texas,Southwestern Medical School at Dallas)生物化学系获得博士学位(Joseph Ready),随后加入伊利诺伊大学香槟分校(UIUC)化学系任博士后研究助理。2010年8月加入得克萨斯大学西南医学中心生物化学系任高级研究助理。2013年10月起回国加入北京生命科学研究所(NIBS).目前实验室研究方向主要有:基于自然丰富的原材料的新颖有机合成方法学开发,基于高生物活性的天然产物的全合成和药物开发,基于高通量化合物筛选的药物化学和化学生物学等。结合构效关系优化苗头化合物小分子结构成特异性高活性分子探针和先导化合物,利用化学生物学手段探索未知的分子生物学机理并鉴定全新的生物医药靶点,进而开发尚未满足临床需求(Unmet Medical Needs)的原始创新(First-in-Class)药物,如抑制乙肝病毒感染,生物钟调节,小分子诱导蛋白降解等。目前已经在医药研发与合成化学领域杂志 Nature Chemistry, Science Translational Medicines, Chem, JACS, Angewandt以及JMC上发表多篇文章。
https://www.x-mol.com/groups/qixiangbing
http://qigroup.nibs.ac.cn/research/
目前实验室研究方向主要有具有生物活性的有机小分子药物开发, 化学小分子库的构建和高通量筛选,天然小分子全合成和生物仿生合成,同时开发新型化学小分子探针用于鉴定药物新靶点并通过探索化学生物学新策略研究小分子与靶点的相互作用关系调控重要的生物学机理。基于自然丰富的原材料的新颖有机合成方法学开发,基于高生物活性的天然产物的全合成和药物开发,基于高通量化合物筛选的药物化学和化学生物学等。结合构效关系优化苗头化合物小分子结构成特异性高活性分子探针和先导化合物,利用化学生物学手段探索未知的分子生物学机理并鉴定全新的生物医药靶点,进而开发尚未满足临床需求(Unmet Medical Needs)的原始创新(First-in-Class)药物,如抑制乙肝病毒感染,生物钟调节,小分子诱导蛋白降解等。
项目:
1.国家重点基础研究计划 (973计划):“病原体感染相关新蛋白靶点药物研发”课题(2014CB849603)
2.科技部“重点领域创新团队”计划-2019
3.国家自然科学基金:“基于呋喃选择性氧化重排和吲哚亲核加成串联反应的吲哚类生物碱的全合成”(21971018)
4.北京市青年拔尖人才支持计划
5.北京“高创计划”百千万工程领军人才
6.北京市海外高层次人才
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目前实验室研究方向主要有具有生物活性的有机小分子药物开发, 化学小分子库的构建和高通量筛选,天然小分子全合成和生物仿生合成,同时开发新型化学小分子探针用于鉴定药物新靶点并通过探索化学生物学新策略研究小分子与靶点的相互作用关系调控重要的生物学机理。基于自然丰富的原材料的新颖有机合成方法学开发,基于高生物活性的天然产物的全合成和药物开发,基于高通量化合物筛选的药物化学和化学生物学等。结合构效关系优化苗头化合物小分子结构成特异性高活性分子探针和先导化合物,利用化学生物学手段探索未知的分子生物学机理并鉴定全新的生物医药靶点,进而开发尚未满足临床需求(Unmet Medical Needs)的原始创新(First-in-Class)药物,如抑制乙肝病毒感染,生物钟调节,小分子诱导蛋白降解等。
Total Synthesis of Natural product:
Inspired by the rapid and efficient construction of molecular complexity from simple precursors in natural living system by enzymatic pathway, our lab is mainly focused on the biocatalysis development and the utilization of biomimetic synthesis of natural products and biologically valuable small molecules. The utility of biomass-derived building blocks will be demonstrated by the synthesis of a variety of natural products through environmentally friendly organocascade process that involve the formation of several chemical bonds and stereogenic centers simultaneously with excellent stereoselectivity. Structurally complex natural products are naturally produced in microorganisms through a series of elaborate biological pathways, so its biomimetic synthesis will be incorporated with organocascade transformations in the lab.
Medicinal Chemistry:
Besides discovery of small molecule catalysis and natural product biomimetic synthesis, we are also interested in developing novel reagents for practical transformations to rapidly assemble unnatural complex molecules. The combination of chemical synthesis and biosynthesis of biologically valuable molecules is an important part of our pursuits for exciting discoveries of biomaterials, chemical biology as well as pharmaceutical agents to solve serious health problem in living system.
HTS is a drug-discovery process widely used in the pharmaceutical companies and biomedical research institutes. Using robotics, data processing and control software, liquid handling devices and sensitive detectors, HTS conduct extremely scalable assay to test the biological or biochemical activity of a large number of small molecules for discovering active agents for receptors, enzymes, ion-channels or other pharmacological targets in the molecular and cellular level of biomolecular pathway. Typically, HTS assays are performed in microtiter plates with a 96 or 384 well format. HTS is one of main facilities in our lab to provide comprehensive services including the use of HTS technology, compounds in various libraries, a database of results from screens and lead optimization. On a collaborative basis, HTS has the capability to support cellular and biochemical assays using absorbance, fluorescent kinetics, fluorescence resonance energy transfer, AlphaScreen, bioluminescence and cellular fluorescence imaging. In addition, HTS has expertise in adapting those biological and biochemical bench-top assays into high-throughput screening settings. Our HTS libraries are designed for diversity around not only well-established pharmacophore, but also very strict molecular property profiles that were balanced between diversity, physicochemical favorability, intrinsic complexity, and synthetic tractability. Encouraged by the fact that a significant number of marketed drugs are derived from natural products, we are also interested in expanding natural chemical products in compound libraries and developing effective strategy to diversify the core backbone structure of natural products. We will design and explore biomimetric synthetic pathways to build up the molecule efficiently. Easily modified structure and high selective strategy will be preferred. The organocascade type assembling of complex structure will eventually result in the discovery of novel bio-valuable molecules to diversify the library.
Saturation of carbon or heteroatoms, especially sp3-hybridized and stereogenic atoms in pharmacophore allows the preparation of architecturally more complex molecules for the exploration of more diverse chemical space. While biological activity of small molecule and clinical success are highly correlated with greater complexity of the molecule, the increasing sp3 character of carbon may improve the complexity and therefore increase the opportunity to adjust molecular shape by out-of-plane 3-D interaction of receptor/ligand that are not accessible for a flat aromatic ring, and thus improve potency and selectivity. While aromatic features can provide an opportunity to develop π-π interactions or π-cation interactions, an overall level of saturation may provide the molecule with an opportunity to better place these types of moieties in a 3D environment, which is generally observed in binding pockets of target proteins.
These criteria have also been applied to molecular complexity of natural product-like drug candidates by reducing the aromatic character of a molecule, which might further improve physical characteristics not only for better druggability, but also for better bioavailability. In our lab, we mainly focus on the synthetic logic and strategy for the activation, functionalization and formation of sp3-carbon-carbone single bond.
Carbon-carbon single bonds are among the most abundant and the strongest inert bonds in organic compounds. Activating them for chemical modification is one of the most challenging problems in organic synthesis. Furthermore, the selective activation or cleavage of the terminal vs. internal C-C single bonds of aliphatic chain is still unsolved! In addition, the presence of more active C-H bond is superimposed obstacle for selective activation of C-C bond.
SP3-C-C single bond activation:
http://qigroup.nibs.ac.cn/publications/
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