图 1. Differential ability of poly-IC and poly-ICLC to stimulate TLR3 and MDA5 receptors[3]
图 2. Schematic poly(I: C)-induced TLR3 signaling pathways in astrocytes[4].
图 3. dsRNA-induced TLR3-TICAM-1-mediated cellular responses in myeloid DCs[6]
3. Poly (I:C)(聚胞苷酸)用于病毒研究
Poly I:C(Polyinosinic-polycytidylic acid,聚胞苷酸,AbMole,M5062)在病毒学研究中也具有广泛的应用前景,Poly I:C(CAS No.:24939-03-5)能够模拟病毒感染过程中产生的天然dsRNA,诱导机体产生类似病毒感染的免疫反应,刺激机体免疫系统清除入侵的病毒。例如,在小鼠模型中,通过注射Poly I:C,能够实现干扰素依赖性的途径清除乙型肝炎病毒[7]。
4. Poly I:C (聚胞苷酸)用于疫苗佐剂研发
佐剂作为疫苗中的添加组分可以改善适应性免疫反应或刺激先天免疫系统,在疫苗研发中,Poly I:C(Polyinosinic:polycytidylic acid,AbMole,M5062)是常用的佐剂之一,它能诱导干扰素γ(IFN-γ)、肿瘤坏死因子α(TNF-α)及多种趋化因子的表达[8]。此外,Poly I:C(Polyinosinic-polycytidylic acid)还能模拟病毒感染,激活巨噬细胞和树突状细胞,促进抗原呈递[9]。Poly (I:C)还可与宿主防御肽(HDP)、聚磷腈(polyphosphazene)等组成复合佐剂(如TriAdj),以协同增强免疫效果[10]。
范例详解
Gene. 2024 Mar 1;897:148049.
中山大学第一附属医院的科研团队在上述论文中使用了AbMole的Poly I:C (Polyinosinic:polycytidylic acid,AbMole,M5062),以探究视黄酸诱导基因1(RIG-1)在DC(树突细胞)活化和成熟中起关键作用。研究结果表明,抑制RIG-1表达能够阻止DC的成熟,使其保持未成熟状态,表现为共刺激分子和主要组织相容性复合体(MHC)表达水平降低,吞噬能力增强,同时分泌更多的抗炎细胞因子(如IL-10和TGF-β)和更少的促炎细胞因子(如IL-12和TNF-α)。Poly(I:C)被用作RIG-1的激动剂,用于RIG-1对DC成熟的影响。
图 4. RIG-1 inhibited DCs suppress poly(I:C)-induced maturation of BMDCs.
AbMole是ChemBridge中国区官方指定合作伙伴。

*本文所述试剂仅供科研使用
参考文献及鸣谢
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