学术前沿:上海交大科研团队癌症免疫治疗科研中获要紧发展
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">近年来,免疫原性细胞死亡(ICD)<span style="color: black;">做为</span>肿瘤免疫治疗的<span style="color: black;">科研</span>热点备受关注。</strong>然而,肿瘤对传统细胞死亡途径的抵抗严重限制了ICD的疗效。<span style="color: black;">因此呢</span>,迫切<span style="color: black;">必须</span><span style="color: black;">研发</span>一种<span style="color: black;">拥有</span>高免疫原性的新型癌细胞死亡方式。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">近期</span>上海交大药学院沈琦<span style="color: black;">科研</span>团队在著名学术期刊《Nano Today》<span style="color: black;">发布</span>了题为“<strong style="color: blue;">Biomimetic bacteria-derived nanoclusters enhance ferroptosis cancer immunotherapy through synergistic CRISPR-photothermo modulation</strong>”的<span style="color: black;">科研</span>成果。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="//q8.itc.cn/images01/20240326/357aef5d65364dfb802595c79f198fe0.png" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">铁死亡是一种以脂质过氧化(LPO)为<span style="color: black;">重点</span>特征的新型细胞死亡方式,<span style="color: black;">已然</span><span style="color: black;">导致</span>了广泛关注。越来越多的<span style="color: black;">科研</span><span style="color: black;">显示</span>,铁死亡能够<span style="color: black;">诱发</span><span style="color: black;">明显</span>的ICD,并释放危险<span style="color: black;">关联</span>分子模式(DAMPs),<span style="color: black;">重点</span><span style="color: black;">包含</span>表面暴露的钙网蛋白(CRT)和高迁移率群蛋白1(HMGB1)等。<strong style="color: blue;">然而,<span style="color: black;">日前</span>的铁死亡诱导剂如小分子<span style="color: black;">控制</span>剂及铁基纳米材料等递送效率低、成本高,且<span style="color: black;">没</span>法<span style="color: black;">供给</span>持久的LPO<span style="color: black;">干涉</span>效果,<span style="color: black;">引起</span>免疫原性铁死亡诱导不彻底。</strong><span style="color: black;">因此呢</span>,探索能够<span style="color: black;">明显</span>持久<span style="color: black;">干涉</span>LPO的<span style="color: black;">药品</span>体系<span style="color: black;">拥有</span><span style="color: black;">要紧</span><span style="color: black;">道理</span>。为此,上海交通大学药学院沈琦<span style="color: black;">科研</span>团队提出了一种全新的铁死亡调控策略,<span style="color: black;">经过</span>构建仿生细菌衍生纳米团簇,为基于铁死亡的肿瘤免疫治疗<span style="color: black;">供给</span>了一种新策略。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="//q6.itc.cn/images01/20240326/b00e21d04bf54aaea8f524cb2acef122.png" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">细菌<span style="color: black;">源自</span>的外膜囊泡(OMV),<span style="color: black;">拥有</span>天然的纳米尺寸和病原<span style="color: black;">关联</span>分子模式(PAMPs),能够激活toll样受体(TLR)通路,促进免疫系统细胞浸润肿瘤</strong>。基于此,沈琦<span style="color: black;">科研</span>团队创新性地结合了基因工程改造OMV的天然特性和墨鱼<span style="color: black;">源自</span>黑色素纳米粒(MNPs)的光热转化性能,结合基因编辑器(pCRISPR),构建仿生细菌衍生纳米团簇(TO@Mp)用于铁死亡<span style="color: black;">科研</span>。<span style="color: black;">经过</span>T7肽工程化OMV实现纳米团簇的靶向递送,在肿瘤细胞中激活铁死亡<span style="color: black;">关联</span>基因编辑和光热效应,<span style="color: black;">诱发</span><span style="color: black;">有效</span>LPO并触发ICD,促进DCs成熟并<span style="color: black;">诱发</span>肿瘤特异性T细胞免疫反应,<span style="color: black;">同期</span><span style="color: black;">经过</span>激活TLR通路,实现了强大的抗肿瘤效果。<a style="color: black;"><span style="color: black;">返回<span style="color: black;">外链论坛:http://www.fok120.com/</span>,查看<span style="color: black;">更加多</span></span></a></p>
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