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GD2 Ganglioside oligosaccharide(GD2神經(jīng)節(jié)苷脂寡糖)是一種在生物體細(xì)胞膜中發(fā)現(xiàn)的復(fù)雜糖脂分子。作為神經(jīng)節(jié)苷脂家族的一部分,GD2因其在多種癌癥中的異常表達(dá)而備受關(guān)注,并成為癌癥免疫治療的一個(gè)潛在靶點(diǎn)。以下是對(duì)GD2神經(jīng)節(jié)苷脂寡糖的一些基本介紹:
結(jié)構(gòu)特征:
GD2是一種含有兩個(gè)唾液酸的二唾液酸神經(jīng)節(jié)苷脂。它的基本結(jié)構(gòu)由三個(gè)碳水化合物殘基和兩個(gè)唾液酸組成,通過(guò)糖苷鍵與一個(gè)神經(jīng)酰胺(ceramide)的疏水部分相連。這種結(jié)構(gòu)使得GD2具有兩親性,即既有親水的糖鏈部分也有疏水的脂肪酸鏈部分。


生物學(xué)功能:
GD2在生理?xiàng)l件下的表達(dá)通常受到限制,主要在神經(jīng)系統(tǒng)中表達(dá)。它參與多種生物學(xué)過(guò)程,包括細(xì)胞信號(hào)傳導(dǎo)、細(xì)胞識(shí)別和神經(jīng)發(fā)育。GD2在細(xì)胞膜上形成微域,影響細(xì)胞表面受體的信號(hào)傳導(dǎo)。
癌癥關(guān)聯(lián):
在多種神經(jīng)外胚層來(lái)源的癌癥中,如神經(jīng)母細(xì)胞瘤、黑色素瘤和一些小細(xì)胞肺癌等,GD2的表達(dá)水平常常上調(diào)。在癌癥中,GD2的過(guò)表達(dá)與增強(qiáng)的細(xì)胞存活和侵襲性相關(guān)聯(lián)。此外,GD2的抗體結(jié)合可以導(dǎo)致免疫獨(dú)立的細(xì)胞死亡機(jī)制,并可能作為免疫檢查點(diǎn)影響T細(xì)胞功能。
免疫治療應(yīng)用:
鑒于GD2在癌癥中的異常表達(dá),它已成為免疫治療的有希望的靶點(diǎn)。研究者正在開發(fā)方法來(lái)量化患者樣本中的GD2水平。此外,正在測(cè)試多種治療策略,包括基于初始抗體成功的衍生物,如雙特異性抗體和免疫細(xì)胞因子,以激活患者的免疫系統(tǒng)。GD2特異性抗體可以直接誘導(dǎo)腫瘤細(xì)胞死亡,這為癌癥治療提供了新的視角。
研究表明,GD2的表達(dá)水平與腫瘤細(xì)胞對(duì)GD2抗體介導(dǎo)的細(xì)胞毒性的敏感性相關(guān)。此外,GD2抗體不僅能夠被動(dòng)地結(jié)合到腫瘤細(xì)胞表面,還能夠直接誘導(dǎo)GD2陽(yáng)性腫瘤細(xì)胞迅速死亡。GD2神經(jīng)節(jié)苷脂寡糖作為一種潛在的生物標(biāo)志物和治療靶點(diǎn),在癌癥免疫治療領(lǐng)域具有重要的研究?jī)r(jià)值。未來(lái)的研究可能會(huì)揭示更多關(guān)于GD2在癌癥發(fā)展和治療中的作用,以及如何更有效地利用GD2靶向治療來(lái)提高癌癥患者的治療效果。
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| GLY094-BT-FLUO-A | GD2 Ganglioside oligosaccharide linked to biotin and fluorescein (Linker-BT-FLUO A) |
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| GLY094-MAL-A | GD2 Ganglioside oligosaccharide linked to maleimide (Linker-MAL A) |
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| GLY094-90% | GD2 Ganglioside oligosaccharide (>90% NMR) |
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| GLY094-BT-STEA-A | GD2 Ganglioside oligosaccharide linked to biotin and stearic chain (Linker-BT-STEA A) |
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| GLY094-CRM197 | GD2 Ganglioside oligosaccharide grafted on CRM197 |
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| GLY094-N3-B | GD2 Ganglioside oligosaccharide with terminal azide (Linker-N3 B) |
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| GLY094-R1-R2 | GD2 Ganglioside oligosaccharide with customizable dual functionalization |
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| GLY094-BSA | GD2 Ganglioside oligosaccharide grafted on BSA |
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| GLY094-BT-A | GD2 Ganglioside oligosaccharide linked to biotin (Linker-BT A) |
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| GLY094-BT-B | GD2 Ganglioside oligosaccharide linked to biotin (Linker-BT B) |
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| GLY094-BT-C | GD2 Ganglioside oligosaccharide linked to biotin (Linker-BT C) |
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| GLY094-DBCO-A | GD2 Ganglioside oligosaccharide with DBCO (Linker-DBCO A) |
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| GLY094-DBT-A | GD2 Ganglioside oligosaccharide linked to desthiobiotin (Linker-DBT-A) |
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| GLY094-FLUO-A | GD2 Ganglioside oligosaccharide linked to fluorescein (Linker-FLUO A) |
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| GLY094-GEL-A | GD2 Ganglioside oligosaccharide grafted on gel for affinity chromatography (Linker-GEL A) |
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| GLY094-GEL-B | GD2 Ganglioside oligosaccharide grafted on gel for affinity chromatography (Linker-GEL B) |
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| GLY094-HSA | GD2 Ganglioside oligosaccharide grafted on HSA |
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| GLY094-KLH | GD2 Ganglioside oligosaccharide grafted on KLH |
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| GLY094-LIPO-A | GD2 Ganglioside oligosaccharide with cyclic di-thiol (Linker-LIPO A) |
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| GLY094-N3-A | GD2 Ganglioside oligosaccharide with terminal azide (Linker-N3 A) |
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| GLY094-NH2-A | GD2 Ganglioside oligosaccharide with free terminal amine (Linker-NH2 A) |
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| GLY094-NH2-B | GD2 Ganglioside oligosaccharide with free terminal amine (Linker-NH2 B) |
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| GLY094-NH2-C | GD2 Ganglioside oligosaccharide with free terminal amine (Linker-NH2 C) |
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| GLY094-NH2-D | GD2 Ganglioside oligosaccharide with free terminal amine (Linker-NH2 D) | ![]() |
| GLY094-OVA | GD2 Ganglioside oligosaccharide grafted on OVA |
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| GLY094-STEA-A | GD2 Ganglioside oligosaccharide with stearic chain (Linker-STEA A) |
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| GLY094-YNE-A | GD2 Ganglioside oligosaccharide with terminal alkyne (Linker-CΞCH A) |
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| GLY094-YNE-B | GD2 Ganglioside oligosaccharide with terminal alkyne (Linker-CΞCH B) |
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| GLY094-YNE-C | GD2 Ganglioside oligosaccharide with terminal alkyne (Linker-CΞCH C) | ![]() |
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