研究方向 1. 粘细菌发育生物学 主要以粘细菌为模型研究多细胞结构形态发生。粘细菌是最简单的具有多细胞发育结构的生物体之一,在生命的起源上要先于简单多细胞无脊椎动物。粘细菌发育生物学有两个问题令人关注。一是细胞间的通讯,由于粘细菌的发育涉及数万个细胞的相互作用,因此细胞间对话是多细胞形态发生正常进行的基础,然而迄今为止该细菌细胞间对话通路仍不完整、清晰。二是发育相关基因包括非编码RNA的克隆、调控及功能分析,时空调控及功能分析强调在不同层次特别是在整体水平进行系统性研究。本实验室利用生物化学、组学、分子遗传学等实验技术,围绕上述两个中心问题探讨粘细菌发育的分子机制。最近我们在粘细菌中鉴定了一条chaperone/usher(CU)蛋白分泌通路,CU通路与菌毛生物合成相关。我们正在研究粘细菌CU通路介导蛋白分泌的分子过程和调节机制,这不仅有助于揭示该模式生物发育分化路径,同时也有助于理解菌毛这一细胞表面黏附性致病因子的组装机制,为抗感染药物研制提供新思路。 2. 炎症性自身免疫病 主要以类风湿性关节炎(RA)为代表。RA是常见的慢性进行性炎症性自身免疫病,其病理特征为炎性细胞增生浸润为主的滑膜炎症并侵及软骨和骨,导致关节破坏、功能障碍甚至残废,在我国RA患病率超过0.3%,全球患病率达0.5%。RA一直无特效疗法,1998年全球第一个治疗RA的生物制剂—TNFα单抗的诞生使RA治疗取得突破性的进展,但TNFα阻断剂仅在60-70% RA患者显示疗效,且这种治疗作用往往只是部分改善关节炎症和骨质损伤。本实验室致力于RA发病分子机制研究,以发现、鉴定新的RA诊断标记和治疗靶标。
近期论文(通讯作者)
1. Xiaohua Mao#, Zhenyi Su#, Adnan K. Mookhtiar. Long non-coding RNA: a versatile regulator of the NF-κB signaling circuit.Immunology 2017, 150(4):379-388. 2. Gui Zhao, Zhenyi Su, Dan Song, Yimin Mao, Xiaohua Mao. The long noncoding RNA MALAT1 regulates the lipopolysaccharide-induced inflammation response through its interaction with NF-kB. FEBS Lett. 2016, 590:2884. 3. Daoyong Wang, Shihui Xu, Dan Song, Stefan Knight, Xiaohua Mao.A gene encoding a potential adenosine 5'-phosphosulfate kinase is necessary for timely development of Myxococcus xanthus. Microbiology 2016, 162(4):672-83. 4. Shanshan Cao, Miaomiao Wu, Shihui Xu, Xiuwen Yan, Xiaohua Mao. Identification of a putative flavin adenine dinucleotide-binding monooxygenase as a regulator for Myxococcus xanthus development. J Bacterioal 2015, 197(7):1185-1196. 5. Juanli Duan, Jinlai Dong, Tiantian Zhang, Zhenyi Su, Jie Ding, Yu Zhang, Xiaohua Mao. Polyethyleneimine-functionalized iron oxide nanoparticles for systemic siRNA delivery in experimental arthritis. Nanomedicine 2014; 9(6):789. 6. Miaomiao Wu, Shihui Xu, Wei Zhu, Xiaohua Mao. The archaic chaperone-usher pathways may depend on donor strand exchange for intersubunit interactions. Microbiology 2014; 160:2200. 7. Wei Zhu, Miaomiao Wu, Shanshan Cao, Yongxing Peng, Xiaohua Mao. Characterization of McuB, a periplasmic chaperone-like protein involved in the assembly of Myxococcus spore coat. J Bacteriol. 2013;195(13):3105-14. 8. Tiantian Zhang, Xuehua Bai, Xiaohua Mao. Systemic Delivery of Small Interfering RNA Targeting the Interleukin-2/15 Receptor β Chain Prevents Disease Progression in Experimental Arthritis. PLoS ONE 2013; 8(11): e78619. 9. Xiaoyan Leng, Wei Zhu,Jing Jin, Xiaohua Mao. Evidence that a chaperone–usher-like pathway of Myxococcus xanthus functions in spore coat formation. Microbiology 2011, 157:1886–1896 10. Deling Wang, Xianglei Deng, Xiaoyan Leng, Xiaohua Mao. Interleukin-15 receptor-directed immunotoxins atteunuate disease severity in rat adjuvant arthritis. Mol Immunol 2010, 47:1535-43
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