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中科院深圳先进院王宇研究员Nature Biotechnology:CRISmers+GRAPE-LM RNA适配体进化新范式

  • 2026-02-07 20:30:06
中科院深圳先进院王宇研究员Nature Biotechnology:CRISmers+GRAPE-LM RNA适配体进化新范式
核酸适配体(aptamer)由诺奖得主Jack Szostak命名,是一类短的单链DNAssDNA)或RNA寡核苷酸,能够折叠形成特定三维结构,并以结构分子的方式高亲和力结合蛋白或小分子,从而具备开发成为核酸药物和诊断探针的潜力(1, 2)。然而,适配体发现长期依赖指数富集的配体系统进化技术(SELEX),通常需要多轮、强人工参与的筛选与优化;更关键的是,在体外简化条件下获得的适配体,亲和力和特异性常常不高,限制了其开发成核酸药物和探针的潜力(3)
王宇课题组在既往工作中提出CRISmersCRISPR/Cas-based aptamers screening system),将适配体筛选从溶液和细胞表面体系推进到细胞内环境,使筛选过程天然包含内源生物学机制,体现了内源折叠构象、相互作用特异性、充分的分子竞争等关键变量,从源头提升生物学相关性(4, 5)。在CRISmers筛选体系中,每个细胞作为一个独立的物理微单元,其作用类似于微流控液滴,能够有效隔离不同分子间的交叉反应,从而显著降低背景噪音。与此同时,该系统以细胞存活等表型变化作为功能性的筛选输出方式,相较于传统的体外亲和力筛选,其功能相关性也同时得到了显著提升。这些工作此前发表于Advanced ScienceAdvanced Healthcare Materials
不过,胞内筛选不可避免面临递送与细胞数量带来的通量上限:以CRISmers为代表的胞内筛选体系,文库规模受转染/递送效率与细胞摄入能力限制,可能错过大量潜在有效序列。也正是在这一瓶颈处,AI驱动的数字进化开始展现决定性价值。
在最新工作中,中科院深圳先进院王宇研究员团队进一步提出GRAPE-LMGenerator of RNA Aptamers Powered by activity-guided Evolution and Language Model),胞内筛选数据核酸语言模型耦合为一条端到端的一轮式高效进化路径:模型以Transformer条件自编码器为骨架,融合核酸语言模型,并由CRISmers在胞内环境产生的筛选数据提供活性引导,实现RNA适配体的一轮进化与生成6)。在GRAPE-LM中,活性引导机制将模型推向更高活性的方向,预训练核酸语言模型用于提出合理的高质量候选序列。该框架在三类跨度显著的靶标上完成验证:人T细胞受体CD3εSARS-CoV-2刺突蛋白RBD,以及人源致癌转录因子c-Myc(胞内无序蛋白)。
更重要的是,GRAPE-LM实验进化从传统的多轮循环,重构为物理进化 + 数字优化的两阶段:第一阶段由CRISmers在细胞内完成一轮筛选,第二阶段由语言模型在更大序列空间中进行数字化优化与外推;在三类靶标上,仅用一轮即可获得优于既往SELEX 6–16轮所得到的适配体的先导序列。这种效率跃迁也体现在起始文库需求上:CRISmers+GRAPE-LM路线可在约10^8规模的起始文库上工作,而经典SELEX常需要10^14–10^16量级;换言之,前者仅需后者约百万分之一到亿分之一的初始文库规模。
CRISmers+GRAPE-LM的新范式中,CRISPR脱离了基因编辑的框架,在这里扮演的是高保真胞内RNA数据发动机,捕获SELEX等体外方法难以复现的胞内内源生物学机制GRAPE-LM则通过外推有限起始文库,补足CRISmers通量受限的短板,并且引导生成更高活性RNA适配体。
这一工作仅仅将CRISmersGRAPE-LM两个工具使用一次。面向未来,多轮迭代有望进一步提升分子质量和成药性。此外,GRAPE-LM仅仅应用了语言模型,物理模型的加入有望实现生成能力的进一步加强。该技术路线也已成功用于多肽分子的高效发现,并与某知名药企合作开展药物开发(未发表结果)。
在与王宇的通讯中,领域开创者Jack Szostak评价CRISmersGRAPE-LM的工作非常有创造性,令人印象深刻“very creative and impressive”)。在论文审稿过程中,审稿人评价该工作超级创新“super innovative”),并被编辑团队选为亮点论文,邀请作者发表Research Briefing介绍论文成果和研究历程(7)。同时,Nature Biotechnology编辑团队发表评论,表达了对这项工作的兴奋”(“exciting”)
深圳大学人工智能学院助理教授张军中国科学院深圳先进技术研究院合成生物学研究所助理研究员张菊为该论文的共同第一作者。中国科学院深圳先进技术研究院合成生物学研究所王宇研究员为通讯作者。天津大学药学院张阳教授张军助理教授为共同通讯作者。唐少轩、刘传承、蔡雨珊、曾浩、孟翔杰、柳贝为参与作者,对本项工作做出重要贡献。本项工作得到了国家自然科学基金、重点研发计划等项目的大力支持。

BioMed科技」关注生物医药×化学材料交叉前沿研究进展!交流、合作,请添加杨主编微信!

参考文献:
1.Z. Du, X. Q. Wu, Y. Dang, Q. Wu, T. Fu, L. He, X. Q. Wang, S. Mou, X. H. Fang, F. L. Qu, W. H. Tan, Molecular bioengineering of functional nucleic acids. Nat Rev Bioeng, (2025).https://doi.org/10.1038/s44222-025-00361-y
2.A. D. Ellington, J. W. Szostak, Invitro Selection of RNA Molecules That Bind Specific Ligands. Nature346, 818-822 (1990).doi: 10.1038/346818a0.
3.C. Tuerk, L. Gold, Systematic Evolution of Ligands by Exponential Enrichment - RNA Ligands to Bacteriophage-T4 DNA-Polymerase. Science249, 505-510 (1990).doi: 10.1126/science.2200121.
4.J. Zhang, A. R. Zhu, M. Mei, J. Qu, Y. L. Huang, Y. S. Shi, M. Y. Xue, J. F. Zhang, R. L. Zhang, B. Zhou, X. Tan, J. C. Zhao, Y. Wang, Repurposing CRISPR/Cas to Discover SARS-CoV-2 Detecting and Neutralizing Aptamers. Adv Sci10e2300656 (2023).doi: 10.1002/advs.202300656.
5.J. Zhang, A. R. Zhu, S. X. Wei, Y. S. Shi, C. J. Chen, T. Huang, T. Tang, J. X. Zhao, Y. S. Cai, C. S. Han, J. C. Zhao, Y. Wang, Identification of Pan-Coronavirus Neutralizing Aptamers Through CRISmers Targeting the Conserved Fusion Peptide. Adv Healthc Mater14e2501869 (2025).doi: 10.1002/adhm.202501869.
6. J. Zhang, J. Zhang, S. X. Tang, C. C. Liu, Y. S. Cai, H. Zeng, X. J. Meng, B. Liu, Y. Zhang, Y. Wang, Single-round evolution of RNA aptamers with GRAPE-LMNat Biotechnol, (2026).doi10.1038/s41587-026-03007-5
7. J. Zhang, Y. Zhang, Y. Wang, Generative AI powered by nucleic acid language model enables one-round evolution of RNA aptamersNat Biotechnol,(2026).doi10.1038/s41587-026-03008-4
原文链接:
https://www.nature.com/articles/s41587-026-03007-5
来源:课题组供稿声明:仅代表作者个人观点,作者水平有限,如有不科学之处,请在下方留言指正!

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  1. CONNECT:[ UseTime:0.000590s ] mysql:host=127.0.0.1;port=3306;dbname=c460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000915s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.015515s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000351s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000572s ]
  6. SELECT * FROM `set` [ RunTime:0.010849s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000607s ]
  8. SELECT * FROM `article` WHERE `id` = 487096 LIMIT 1 [ RunTime:0.005740s ]
  9. UPDATE `article` SET `lasttime` = 1770474870 WHERE `id` = 487096 [ RunTime:0.011824s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000437s ]
  11. SELECT * FROM `article` WHERE `id` < 487096 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001803s ]
  12. SELECT * FROM `article` WHERE `id` > 487096 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.007759s ]
  13. SELECT * FROM `article` WHERE `id` < 487096 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.228203s ]
  14. SELECT * FROM `article` WHERE `id` < 487096 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.268190s ]
  15. SELECT * FROM `article` WHERE `id` < 487096 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.081302s ]
0.704083s