圖 1. Differential ability of poly-IC and poly-ICLC to stimulate TLR3 and MDA5 receptors[3]
圖 2. Schematic poly(I: C)-induced TLR3 signaling pathways in astrocytes[4].
圖 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)在病毒學(xué)研究中也具有廣泛的應(yīng)用前景,Poly I:C(CAS No.:24939-03-5)能夠模擬病毒感染過程中產(chǎn)生的天然dsRNA,誘導(dǎo)機體產(chǎn)生類似病毒感染的免疫反應(yīng),刺激機體免疫系統(tǒng)清除入侵的病毒。例如,在小鼠模型中,通過注射Poly I:C,能夠?qū)崿F(xiàn)干擾素依賴性的途徑清除乙型肝炎病毒[7]。
4. Poly I:C (聚胞苷酸)用于疫苗佐劑研發(fā)
佐劑作為疫苗中的添加組分可以改善適應(yīng)性免疫反應(yīng)或刺激先天免疫系統(tǒng),在疫苗研發(fā)中,Poly I:C(Polyinosinic:polycytidylic acid,AbMole,M5062)是常用的佐劑之一,它能誘導(dǎo)干擾素γ(IFN-γ)、腫瘤壞死因子α(TNF-α)及多種趨化因子的表達(dá)[8]。此外,Poly I:C(Polyinosinic-polycytidylic acid)還能模擬病毒感染,激活巨噬細(xì)胞和樹突狀細(xì)胞,促進(jìn)抗原呈遞[9]。Poly (I:C)還可與宿主防御肽(HDP)、聚磷腈(polyphosphazene)等組成復(fù)合佐劑(如TriAdj),以協(xié)同增強免疫效果[10]。
范例詳解
Gene. 2024 Mar 1;897:148049.
中山大學(xué)第一附屬醫(yī)院的科研團(tuán)隊在上述論文中使用了AbMole的Poly I:C (Polyinosinic:polycytidylic acid,AbMole,M5062),以探究視黃酸誘導(dǎo)基因1(RIG-1)在DC(樹突細(xì)胞)活化和成熟中起關(guān)鍵作用。研究結(jié)果表明,抑制RIG-1表達(dá)能夠阻止DC的成熟,使其保持未成熟狀態(tài),表現(xiàn)為共刺激分子和主要組織相容性復(fù)合體(MHC)表達(dá)水平降低,吞噬能力增強,同時分泌更多的抗炎細(xì)胞因子(如IL-10和TGF-β)和更少的促炎細(xì)胞因子(如IL-12和TNF-α)。Poly(I:C)被用作RIG-1的激動劑,用于RIG-1對DC成熟的影響。
圖 4. RIG-1 inhibited DCs suppress poly(I:C)-induced maturation of BMDCs.
AbMole是ChemBridge中國區(qū)官方指定合作伙伴。

*本文所述試劑僅供科研使用
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