标题：Curdlan sulfate/O-linked quaternized chitosan nanoparticles acting as potential adjuvants promote multiple arms of immune responses
作者：Zhang, Shu; Jiang, Honglei; Huang, Shengshi; Li, Pingli; Wang, Fengshan
作者机构：[Zhang, Shu; Jiang, Honglei; Wang, Fengshan] Shandong Univ, Sch Pharmaceut Sci, Inst Biochem & Biotechnol Drugs, Key Lab Chem Biol Nat Prod,Minist Edu 更多
通讯作者：Wang, Fengshan;Wang, FS
通讯作者地址：[Wang, FS]Shandong Univ, Sch Pharmaceut Sci, Inst Biochem & Biotechnol Drugs, Jinan 250012, Shandong, Peoples R China.
关键词：Curdlan sulfate; O-linked quaternized chitosan; Adjuvant; Nanoparticles;; Cross-presentation
摘要：Nasal immunization to prevent and treat diseases caused by infection through the respiratory tract cannot be actualized because of the lack of effective adjuvants. We have proven that compared with antigens loaded on CS or O-HTCC alone in nasal vaccination, antigens loaded on the nanoparticles of curdlan sulfate/O-(2-hydroxyl) propyl-3-trimethyl ammonium chitosan chloride (CS/O-HTCC) can induce stronger systemic and mucosal immune responses. In this study, we evaluated the immunostimulatory activity and mechanisms of CS/O-HTCC nanoparticles. The results showed that CS/O-HTCC nanoparticles can improve the activation of antigen-presenting cells, upregulate the production of inflammatory factors and cytokines, induce cross-presentation, and simultaneously activate type I interferon-related genes. CS/O-HTCC nanoparticles also activated the PI3K/AKT and MAPK pathways and significantly promoted IL-2 transcription to induce the proliferation of lymphocytes. The results revealed that CS/O-HTCC nanoparticles as a type of multifunctional adjuvant can improve multiple arms of immune responses.