当前位置:首页>南昌>南昌大学黄小林、陈廷涛及一附院丁露联合港中深唐本忠院士团队:工程菌生物杂交微型机器人诱导肿瘤焦亡增效IL-2免疫治疗

南昌大学黄小林、陈廷涛及一附院丁露联合港中深唐本忠院士团队:工程菌生物杂交微型机器人诱导肿瘤焦亡增效IL-2免疫治疗

  • 2026-04-01 09:29:33
南昌大学黄小林、陈廷涛及一附院丁露联合港中深唐本忠院士团队:工程菌生物杂交微型机器人诱导肿瘤焦亡增效IL-2免疫治疗

01 导读

南昌大学黄小林研究员、陈廷涛研究员及南昌大学第一附属医院丁露联合香港中文大学(深圳)唐本忠院士在国际期刊《ACS Nano》(中科院1区,IF=16.1)发表题为“Engineered Bacteria-Driven Biohybrid Microrobots Potentiate IL-2 Immunotherapy by Evoking Pyroptosis”的研究论文。该研究开发了一种名为IL-2@Z/C/A的生物混合材料。该材料巧妙集成了能够分泌IL-2变体的工程化大肠杆菌(IL-2-EcN)、ZIF-8框架、聚集诱导发光(AIE)光敏剂及过氧化氢酶,通过诱导肿瘤细胞“焦亡”并重塑肿瘤微环境,显著提升了IL-2免疫治疗的效力,为实现冷肿瘤向热肿瘤的转变提供了全新策略。

02 研究背景

白细胞介素-2IL-2)是首个获FDA批准用于转移性黑色素瘤和肾细胞癌的免疫疗法,具有强大的促进T细胞增殖和效应功能。然而,天然IL-2的临床应用受到反应率低、严重的剂量依赖性毒性、半衰期短(<30分钟)以及脱靶激活免疫细胞等限制。为了突破这些瓶颈,研究者们转向蛋白质工程和工程化细菌载体。工程化细菌能够凭借其天然的趋化性,靶向定植于肿瘤的缺氧和坏死核心,并在原地充当“生物反应器”持续生产治疗药物。尽管如此,肿瘤内部极其严峻的缺氧和免疫抑制微环境(TME)依然阻碍了免疫细胞的有效浸润和激活。因此,亟需一种能够同时诱导免疫原性细胞死亡(ICD)并重塑微环境的协同治疗方案。细胞焦亡(Pyroptosis)作为一种高度促炎的程序性细胞死亡方式,能够通过释放促炎细胞因子和损伤相关分子模式(DAMPs),强力激活免疫系统。基于此,本研究通过构建生物混合机器人,旨在协同实现细胞焦亡诱导与局部IL-2精准递送。

03 研究结果

研究团队首先通过一锅法生物矿化策略,分泌IL-2变体的工程化大肠杆菌表面生成ZIF-8涂层,并同时负载AIE光敏剂(TEPy)和过氧化氢酶(CAT),构建了IL-2@Z/C/A微型机器人。SEMTEM表征证实,ZIF-8成功在细菌表面形成了一层均匀且致密的保护壳(Fig1),这不仅能有效防止药物在全身循环中发生提前泄露,还保护了细菌在到达肿瘤前的活性。

Fig.1IL-2@Z/C/A的合成与表征

在肿瘤细胞模拟酸性微环境的条件下,ZIF-8框架发生降解,释放出锌离子Zn2+AIE光敏剂和过氧化氢酶,并使细菌恢复代谢活力。进一步的研究发现,在白光照射下,AIE光敏剂产生的ROSZn2+、细菌来源的病原体相关分子模式(PAMPs)协同作用,激活了Cle-caspase/GSDMD介导的细胞焦亡通路(Fig. 2)。

Fig.IL-2@Z/C/A诱导肿瘤细胞焦亡

在体内实验中,IL-2@Z/C/A利用EcN的天然趋性精准聚集于肿瘤部位。进一步,过氧化氢酶分解肿瘤内的H2O2产生氧气,有效缓解肿瘤缺氧并逆转由HIF-1α导的免疫抑制。这种多重协同机制不仅促进了树突状细胞(DC)的成熟,还显著增加了肿瘤浸润性细胞毒性T淋巴细胞(CTLs)的数量。在黑色素瘤B16F10模型中,IL-2@Z/C/A联合抗PD-L1治疗实现了近乎完全的肿瘤退缩,并建立了强大的免疫记忆效应,有效预防了肿瘤复发和远端转移(Fig.3

Fig.IL-2@Z/C/A协同免疫治疗显著增强肿瘤抑制效果

04 研究结论

综上所述,这项研究开发了一种极具潜力的生物混合微型机器人平台,通过将局部IL-2递送与Zn2+/AIE/PAMPs介导的细胞焦亡诱导相结合,阐明了“细胞焦亡增强ICD→缺氧缓解→IL-2局部增效”的协同机制。该系统成功将免疫原性极低的“冷肿瘤”转化为响应性良好的“热肿瘤”,为提高临床免疫检查点阻断疗法的响应率提供了新思路

05 作者简介

黄小林,博士,研究员,博士生导师,南昌大学国际食品创新研究院副院长,食品学院食品营养与安全系主任,入选国家级青年拔尖人才、全球前2%顶尖科学家、江西省“千人计划”科技创新高端人才、江西省首批“青年井冈”学者、江西省杰出青年基金获得者、江西普通高校金牌青年教师(教学名师)。长期从事食品安全快速检测的基础理论与应用研究。主持国家重点研发计划青年科学家项目、国家自然科学基金等国家及省部级项目10余项。以第一或通讯作者在Nature Communications等期刊发表高水平论文120余篇,他引超7000次,h-index 53。授权国家发明专利30余件,参与制定国家及地方标准5项。获中国国际大学生创新大赛国家金奖2项、江西省自然科学一等奖2项、江西省教学成果一等奖1项、中国食品科学技术学会科学技术奖自然科学奖二等奖1项。担任Frontiers in Bioengineering and Biotechnology期刊副主编以及Nano-Micro Letters等多个SCI期刊的编委及客座主编。

陈廷涛,研究员/赣江特聘教授,博士生导师,南昌大学药学院副院长/转化医学研究院副院长、生物工程药物江西省重点实验室主任,生物工程药物及其技术国家地方联合工程研究中心、江西省国家科技创新平台培育平台“生物工程药物技术创新中心”微生物方向负责人。担任Canadian Journal of Infectious Diseases & Medical Microbiology主编(IF=2.6),以第一/通讯作者在Cell ReportsGut MicrobesAdvanced Science等期刊发表SCI论文170篇,获微生物学领域2025年全球前2%科学家;授权专利40件;主持国家重点研发计划等国家/省部级项目19项,横向课题36项,总经费逾4700万。

获得江西省双千计划(科技创新高端人才项目)、省杰出青年、省优势科技创新团队、省新世纪百千万人才、省主要学科学术和技术带头人;获产学研合作创新奖、发明创业奖-创新奖、全国高校教师教学创新大赛等国家/省级奖励5项;指导本科生获包括互联网+//铜奖在内的国家级奖项31项,省级奖项9项。

与青岛东海药业、美华生物、善恩康、中科微智、中科嘉亿、深圳保时健、江西善行、瑞康医药、成都倍特益康恩、杭州远大、上海医药、博雅生物等公司研发部门合作,共同致力于益生菌的基础研究与产业转化,开展益生菌临床研究50余项;近5年共给合作企业带来新增销售额13.26亿元,新增利润逾1.92亿元。

原文链接

https://doi.org/10.1021/acsnano.5c21475

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  1. CONNECT:[ UseTime:0.000441s ] mysql:host=127.0.0.1;port=3306;dbname=aa460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000613s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.017973s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.003334s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000586s ]
  6. SELECT * FROM `set` [ RunTime:0.000195s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000586s ]
  8. SELECT * FROM `article` WHERE `id` = 485382 LIMIT 1 [ RunTime:0.005887s ]
  9. UPDATE `article` SET `lasttime` = 1775855085 WHERE `id` = 485382 [ RunTime:0.012253s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000953s ]
  11. SELECT * FROM `article` WHERE `id` < 485382 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.002693s ]
  12. SELECT * FROM `article` WHERE `id` > 485382 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001615s ]
  13. SELECT * FROM `article` WHERE `id` < 485382 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001340s ]
  14. SELECT * FROM `article` WHERE `id` < 485382 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.011797s ]
  15. SELECT * FROM `article` WHERE `id` < 485382 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.005721s ]
0.139681s