Article(id=1308467945798128504, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1308467818098357056, articleNumber=null, orderNo=null, doi=10.16438/j.0513-4870.2025-0804, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1752163200000, receivedDateStr=2025-07-11, revisedDate=1759939200000, revisedDateStr=2025-10-09, acceptedDate=null, acceptedDateStr=null, onlineDate=1789892668436, onlineDateStr=2026-09-20, pubDate=1762876800000, pubDateStr=2025-11-12, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1789892668436, onlineIssueDateStr=2026-09-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1789892668436, creator=13701087609, updateTime=1789892668436, updator=13701087609, issue=Issue{id=1308467818098357056, tenantId=1146029695717560320, journalId=1189982191388893191, year='2025', volume='60', issue='11', pageStart='3263', pageEnd='3544', issueExtLink='null', onlineDate='null', pubDate='1762876800000', pubDateStr='2025-11-12', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1789892637990, creator='13701087609', updateTime=1789893243047, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1308470355954262098, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1308467818098357056, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1308470355954262099, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1308467818098357056, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=3318, endPage=3329, ext={EN=ArticleExt(id=1308467946142061434, articleId=1308467945798128504, tenantId=1146029695717560320, journalId=1189982191388893191, language=EN, title=Progress in targeted protein degradation for central nervous system diseases therapy, columnId=1308467818731696962, journalTitle=Acta Pharmaceutica Sinica, columnName=Special Reports: Recent advances in targeted protein degradation therapeutics, runingTitle=null, highlight=null, articleAbstract=
The development of therapeutic interventions for central nervous system (CNS) diseases poses significant challenges. These challenges are primarily attributable to the limitations imposed by the blood-brain barrier (BBB) permeability and the inherent complexity of protein aggregates. Targeted protein degradation (TPD) technology selectively removes pathogenic proteins through the ubiquitin-proteasome system or lysosomal pathways, offering a new strategy for CNS treatment. In comparison with conventional small molecule drugs, TPD employs an event-driven mode of action, capable of degrading β-amyloid and other "undruggable" targets, and demonstrating efficacy at sub-chemometric doses. This is anticipated to markedly reduce the complexity of CNS delivery. The disconnecting of pharmacodynamics and pharmacokinetics further reduces the risk of off-targeting, making it particularly suitable for the CNS, a therapeutic area that requires a high degree of drug safety. Three CNS degraders have already entered clinical trials. This review comprehensively elaborates on the application progress of TPD technologies based on different degradation systems in the treatment of CNS diseases, systematically analyzes the advantages and limitations of each technology, and discusses the common challenges and general optimization strategies for TPD application in CNS disease therapy. The findings aim to provide new insights for the in-depth application of TPD technology in the treatment of CNS diseases.
, authors=Xue ZHANG
1, Ya-xuan FENG
1, Liu ZHANG
1, Lu SUN
1, *, Hui-ning HE
1, 2, *, authorsList=Xue ZHANG, Ya-xuan FENG, Liu ZHANG, Lu SUN, Hui-ning HE, authorCompany=null, correspAuthors=Lu SUN, Hui-ning HE, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright ©2025 Acta Pharmaceutica Sinica. All rights reserved., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1308467949329732479, articleId=1308467945798128504, tenantId=1146029695717560320, journalId=1189982191388893191, language=CN, title=靶向蛋白降解技术在中枢神经系统疾病治疗中的应用进展, columnId=1308467818874303300, journalTitle=药学学报, columnName=专题报道: 靶向蛋白降解药物前沿进展评述, runingTitle=null, highlight=null, articleAbstract=
中枢神经系统(central nervous system, CNS) 疾病药物研发面临血脑屏障(blood-brain barrier, BBB) 通透性低和以聚集状病理性蛋白为靶药物开发难度大等瓶颈。靶向蛋白降解技术(targeted protein degradation, TPD) 通过泛素-蛋白酶体系统或溶酶体途径选择性清除致病蛋白, 为CNS疾病治疗提供了新的策略。相较于传统小分子药物, 靶向蛋白降解药物采用事件驱动型作用机制, 可降解β-淀粉样蛋白等“不可成药”靶点, 且亚化学计量浓度即可生效, 有望显著降低CNS递送难度。其药效学与药代动力学的解耦特性进一步降低了脱靶风险, 尤其适用于CNS这一对药物安全性要求极高的治疗领域。目前已有3款用于CNS疾病治疗的靶向蛋白降解药物进入临床试验阶段。本综述详细阐述了基于不同降解系统的TPD技术在CNS疾病治疗中的应用进展, 系统地分析了各自技术的优势和局限性, 并对TPD应用于CNS疾病治疗面临的共性挑战和通用优化策略展开探讨, 以期为TPD技术在CNS疾病治疗中的深入应用提供新的启示。
, authors=张雪
1, 冯雅煊
1, 张柳
1, 孙璐
1, *, 贺慧宁
1, 2, *, authorsList=张雪, 冯雅煊, 张柳, 孙璐, 贺慧宁, authorCompany=null, correspAuthors=孙璐, 贺慧宁, authorNote=
作者贡献:
张雪和冯雅煊为共同负责文献调研、数据整理及初稿撰写; 张柳参与部分文献收集与图表制作; 贺慧宁和孙璐为通讯作者, 负责论文框架设计、修改及最终定稿。所有作者均对论文内容进行了审阅并同意最终版本。
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1, 2, *, address=
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Timeline of key events in the development of TPD technology in CNS disease applications. PROTACs: Proteolysis-targeting chimeras; PD: Parkinson's disease; CMA: Chaperone-mediated autophagy; ARV: Acid-recordering valency; LYTAC: Lysosome-targeting chimaeras; GlueTAC: Gluebody targeting chimera; AbTAC: Antibody-based PROTAC; ATTEC: Autophagosome tethering compound; AUTAC: Autophagy-targeting chimera, figureFileSmall=vEnD9vp+fFUeEncUBYeAfA==, figureFileBig=wjCPLfEr77k8lVpk5gS0fQ==, tableContent=null), ArticleFig(id=1308499693190086672, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308467945798128504, language=EN, label=null, caption=null, figureFileSmall=hiP4KcnJSQor4QHRoDUyQg==, figureFileBig=RnC0q3gdKVsvGF04QHwRdA==, tableContent=null), ArticleFig(id=1308499693253001233, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308467945798128504, language=CN, label=Fig.2, caption=
Representative compound structures for targeted protein degradation in CNS disease therapy, figureFileSmall=hiP4KcnJSQor4QHRoDUyQg==, figureFileBig=RnC0q3gdKVsvGF04QHwRdA==, tableContent=null), ArticleFig(id=1308499693315915794, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308467945798128504, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| Molecule | POI | Route of administration | Disease/indication | Phase | Clinical trial gov ID |
| CFT-8919 | EGFR-L858R | PO | CNS metastasized tumors | Phase Ⅰ | NCT06641609 |
| NX-5948 | BTK | PO | Primary CNS lymphoma | Phase Ⅰ | NCT05131022 |
| ARV-102 | LRRK2 | PO | Progressive supranuclear palsy and Parkinson's disease | Phase Ⅰ | EUCT2024-516888-84-00 |
| ORI-113 | mHTT | | Huntington's disease | Preclinical | |
| PRX302 | Tau | | Alzheimer disease | Preclinical | |
| PRX303 | α-Synuclein | | Parkinson disease | Preclinical | |
| APN tau degrader | Tau | | Tauopathies | Preclinical | |
| APN α-Syn degrader | α-Synuclein | | Synucleinopathies | Preclinical | |
| Amphista degrader | Multiple CNS targets | Ⅳ; PO | Multiple CNS indications | Preclinical | |
), ArticleFig(id=1308499693391413267, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308467945798128504, language=CN, label=Tab.1, caption=
Central nervous system (CNS) targeted protein degradations (TPDs) in clinical and preclinical development. PO: Peros; Ⅳ: Intravenous injection; POI: Protein of interest; EGFR: Epidermal growth factor receptor; BTK: Bruton's tyrosine kinase; mHTT: Mutant Huntingtin protein
, figureFileSmall=null, figureFileBig=null, tableContent=
| Molecule | POI | Route of administration | Disease/indication | Phase | Clinical trial gov ID |
| CFT-8919 | EGFR-L858R | PO | CNS metastasized tumors | Phase Ⅰ | NCT06641609 |
| NX-5948 | BTK | PO | Primary CNS lymphoma | Phase Ⅰ | NCT05131022 |
| ARV-102 | LRRK2 | PO | Progressive supranuclear palsy and Parkinson's disease | Phase Ⅰ | EUCT2024-516888-84-00 |
| ORI-113 | mHTT | | Huntington's disease | Preclinical | |
| PRX302 | Tau | | Alzheimer disease | Preclinical | |
| PRX303 | α-Synuclein | | Parkinson disease | Preclinical | |
| APN tau degrader | Tau | | Tauopathies | Preclinical | |
| APN α-Syn degrader | α-Synuclein | | Synucleinopathies | Preclinical | |
| Amphista degrader | Multiple CNS targets | Ⅳ; PO | Multiple CNS indications | Preclinical | |
), ArticleFig(id=1308499693466910740, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308467945798128504, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| Technology | Advantage | Potential problem |
| PROTACs | A degrader of 'undruggable' proteins with a clear mechanism to overcome resistance, under extensive exploration | High molecular mass, suboptimal bioavailability, restricted substrate scope (excluding intracellular soluble proteins), and limited E3 ligase ligands |
| Molecular glue | Low molecular weight; favorable pharmacokinetics; operable via ubiquitin-proteasome or lysosomal pathways; broad degradation scope | Few available molecular glues; lack of design principles |
| Trim-Away | Rapid action against 'undruggable' targets, broad cellular applicability, and compatibility with extensive antibody libraries | Ineffective against extracellular, membrane, and organelle proteins; lacking efficient delivery reagents |
| LYTACs | Ubiquitin-proteasome-independent mechanism; degrades membrane-associated and extracellular targets | Elevated molecular mass, ambiguous mechanism of action, and limited LTR-dependent cell specificity |
| endoTAC | Across BBB ability; avoid proteasome pathway dependence | Dependent on endocytosis efficiency; low endocytosis activity |
| AbTACs | Targeted degradation of membrane proteins and cell surface proteins | High antibody molecular weight; low penetrate BBB ability; immunogenic reaction |
| AUTACs | Degradation of diverse substrates — polymeric proteins, non-protein biomolecules, and organelles | Undefined target ubiquitination profile; premature degradation escape |
| ATTECs | Ubiquitination-independent; relatively low molecular weight; capable of targeting non-protein substrates | Absence of rational design rules; ill-defined LC3-binding pharmacophores |
| CMA | Depends on selective autophagy process and does not require vacuole formation | Pathologically impaired in late HD; age-dependent activity decline; elusive selective degradation mechanism |
| GlueTACs | High affinity and overcoming off-target effects | Low safety profile and uncertain half life |
), ArticleFig(id=1308499693554991125, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308467945798128504, language=CN, label=Tab.2, caption=
Advantages and limitations of different TPD technologies. LYTACs: Lysosome-targeting chimaeras; LTR: Lysosome-targeting receptor; endoTAC: Lysosome-shuttle-like nano-chimera; BBB: Blood-brain barrier; AbTACs: Antibody-based PROTACs; AUTACs: Autophagy-targeting chimeras; ATTECs: Autophagosome tethering compounds; HD: Huntington's disease; GlueTACs: Gluebody targeting chimera
, figureFileSmall=null, figureFileBig=null, tableContent=
| Technology | Advantage | Potential problem |
| PROTACs | A degrader of 'undruggable' proteins with a clear mechanism to overcome resistance, under extensive exploration | High molecular mass, suboptimal bioavailability, restricted substrate scope (excluding intracellular soluble proteins), and limited E3 ligase ligands |
| Molecular glue | Low molecular weight; favorable pharmacokinetics; operable via ubiquitin-proteasome or lysosomal pathways; broad degradation scope | Few available molecular glues; lack of design principles |
| Trim-Away | Rapid action against 'undruggable' targets, broad cellular applicability, and compatibility with extensive antibody libraries | Ineffective against extracellular, membrane, and organelle proteins; lacking efficient delivery reagents |
| LYTACs | Ubiquitin-proteasome-independent mechanism; degrades membrane-associated and extracellular targets | Elevated molecular mass, ambiguous mechanism of action, and limited LTR-dependent cell specificity |
| endoTAC | Across BBB ability; avoid proteasome pathway dependence | Dependent on endocytosis efficiency; low endocytosis activity |
| AbTACs | Targeted degradation of membrane proteins and cell surface proteins | High antibody molecular weight; low penetrate BBB ability; immunogenic reaction |
| AUTACs | Degradation of diverse substrates — polymeric proteins, non-protein biomolecules, and organelles | Undefined target ubiquitination profile; premature degradation escape |
| ATTECs | Ubiquitination-independent; relatively low molecular weight; capable of targeting non-protein substrates | Absence of rational design rules; ill-defined LC3-binding pharmacophores |
| CMA | Depends on selective autophagy process and does not require vacuole formation | Pathologically impaired in late HD; age-dependent activity decline; elusive selective degradation mechanism |
| GlueTACs | High affinity and overcoming off-target effects | Low safety profile and uncertain half life |
), ArticleFig(id=1308499693617905686, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308467945798128504, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| Degradation pathway | Technology | Target | Studied in CNS disease |
| Ubiquitin-proteasome pathway | PROTACs | Tau protein[13]; α-syn[15]; LRRK2[16]; BTK[18] | Alzheimer's disease; Parkinson's disease; Frontotemporal dementia; Glioblastoma |
| Ubiquitin-proteasome pathway | Trim-Away | mHTT[23], tau protein[25, 26] | Alzheimer's disease; Parkinson's disease |
| Endosome-lysosome pathway | LYTACs | ApoE4[35] | Alzheimer's disease |
| Autophagy-lysosome pathway | AUTACs | Tau protein[21], α-syn[43] | Alzheimer's disease; Parkinson's disease |
| Autophagy-lysosome pathway | ATTECs | mHTT[44]; non-protein cellular components[45] | Huntington's disease; cerebral atherosclerosis |
| Autophagy-lysosome pathway | AUTOTACs | Tau protein[49], α-syn[51] | Parkinson's disease; Alzheimer's disease |
| Autophagy-lysosome pathway | CMAs | CDK5[52], PSD-95[53], DAPK1[53], α-syn[53], mHTT[55] | Ischemic stroke; Huntington's disease; Parkinson's disease; Alzheimer's disease; Amyotrophic lateral sclerosis |
| Ubiquitin-proteasome pathway or autophagy-lysosome pathway | Molecular glue | mHTT[21] | Huntington's disease |
| Ribonuclease pathway | RiboTACs | G4C2 RNA[64] | Amyotrophic lateral sclerosis; frontotemporal dementia |
), ArticleFig(id=1308499693693403159, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1308467945798128504, language=CN, label=Tab.3, caption=
Application of targeted protein degradation technology in the treatment of CNS diseases. PSD: Postsynaptic density protein
, figureFileSmall=null, figureFileBig=null, tableContent=
| Degradation pathway | Technology | Target | Studied in CNS disease |
| Ubiquitin-proteasome pathway | PROTACs | Tau protein[13]; α-syn[15]; LRRK2[16]; BTK[18] | Alzheimer's disease; Parkinson's disease; Frontotemporal dementia; Glioblastoma |
| Ubiquitin-proteasome pathway | Trim-Away | mHTT[23], tau protein[25, 26] | Alzheimer's disease; Parkinson's disease |
| Endosome-lysosome pathway | LYTACs | ApoE4[35] | Alzheimer's disease |
| Autophagy-lysosome pathway | AUTACs | Tau protein[21], α-syn[43] | Alzheimer's disease; Parkinson's disease |
| Autophagy-lysosome pathway | ATTECs | mHTT[44]; non-protein cellular components[45] | Huntington's disease; cerebral atherosclerosis |
| Autophagy-lysosome pathway | AUTOTACs | Tau protein[49], α-syn[51] | Parkinson's disease; Alzheimer's disease |
| Autophagy-lysosome pathway | CMAs | CDK5[52], PSD-95[53], DAPK1[53], α-syn[53], mHTT[55] | Ischemic stroke; Huntington's disease; Parkinson's disease; Alzheimer's disease; Amyotrophic lateral sclerosis |
| Ubiquitin-proteasome pathway or autophagy-lysosome pathway | Molecular glue | mHTT[21] | Huntington's disease |
| Ribonuclease pathway | RiboTACs | G4C2 RNA[64] | Amyotrophic lateral sclerosis; frontotemporal dementia |
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