当前位置:首页>郑州>IF 33.9! 恭喜郑州大学副校长"国自然"拿下双一区TOP!系统揭示泛素化调控癌症14大特征!

IF 33.9! 恭喜郑州大学副校长"国自然"拿下双一区TOP!系统揭示泛素化调控癌症14大特征!

  • 2026-04-30 04:11:32
IF 33.9! 恭喜郑州大学副校长"国自然"拿下双一区TOP!系统揭示泛素化调控癌症14大特征!

引言

introduction

📍郑州大学学术副校长

兼医学院院长董子钢《Molecular Cancer》:

泛素化失衡→驱动癌症14大特征。

核心机制:

系统揭示泛素化修饰在肿瘤发生发展中的多维度功能。

临床价值:

新型“靶向降解”药物(PROTAC

已在临床试验中让癌细胞蛋白消失,效果显著!

一张泛素图谱,重塑癌症治疗版图👏!

如果你也想利用国自然热点进行生信分析,快关注我们后台咨询吧!生信百事通,助力每一个科研梦想!

Chanpter 01

文献解读

标题:癌症中的泛素化与去泛素化:从机制探索到新型治疗策略

发表期刊:Molecular Cancer

影响因子:33.9/Q1

Chanpter 02

研究背景

泛素-蛋白酶体系统UPS)负责细胞内80%-90%的蛋白质降解,其调控异常是癌症发生发展的核心驱动因素,但E3泛素连接酶去泛素化酶DUBs) 在肿瘤十四大标志性特征中的整体作用网络尚缺乏系统性梳理。

Chanpter 03

研究方法

系统解析UPS持续增殖、免疫逃逸、代谢重编程等十四大癌症标志性特征中的分子调控机制,并归纳PROTACs如ARV-471、ARV-110)、分子胶如CC-90009)及多种E3/DUB抑制剂在临床试验中的最新进展。

Chanpter 04

研究思路

📌三大维度的研究思路框架已整理,点击图片查看。(5分钟获取核心要点)!

《首建“14标志物-UPS轴”:

癌症泛素调控新范式》

Chanpter 05

研究结果

1.泛素化调控

泛素化通过E1、E2、E3酶的级联反应,给目标蛋白打上不同的“标签”【图1】。

图1.泛素化与去泛素化过程发生于

泛素-蛋白酶体系统(UPS)中

其中,K48连接的泛素链是最经典的“死亡标签”,标记蛋白被26S蛋白酶体识别并降解。

图2.各类泛素(Ub)连接方式

DUBs则负责反向操作,移除泛素链“改判缓刑”【图2】。正是这种“贴标签”与“撕标签”的动态平衡,精密调控着肿瘤发生发展中的关键蛋白命运。

2.生长信号调控

EGFR信号通路的持续激活是多种癌症的驱动力。

图3.泛素化与去泛素化

对癌症特征的调控机制

研究发现,E3连接酶c-Cbl通过降解EGFR来“踩刹车”,而DUB酶Cezanne-1USP22则通过去泛素化稳定EGFR来“踩油门”,导致患者预后更差【图3】。

类似地,USP21通过稳定MEK2维持MAPK信号激活。靶向这些DUB,相当于拆除了癌细胞生长指令的“加速器”。

3.死亡与代谢

除了生长信号,癌细胞还需逃避死亡和重编程代谢。

图4.泛素-蛋白酶体系统(UPS)

通过多种机制在抵抗细胞死亡

过程中发挥关键作用

MDM2通过泛素化降解p53帮助癌细胞逃逸凋亡;IBRDC2则通过降解BAX抑制凋亡,而USP22通过稳定RIPK3抑制坏死性凋亡【图4】。

图5.泛素-蛋白酶体系统通过

多种途径调控肿瘤代谢

代谢层面,TRIM36泛素化HK2抑制糖酵解,OTUB2则去泛素化稳定PKM2为癌细胞“供能”【图5】。可见,UPS全面参与了凋亡、坏死与代谢重编程。

4.免疫逃逸

在肿瘤微环境中,PD-L1是癌细胞抑制T细胞的核心武器。

图6.泛素-蛋白酶体系统调控肿瘤免疫反应

USP22USP9X通过去泛素化稳定PD-L1,帮助癌细胞逃逸免疫攻击【图6】。

相反,SPOPFBXO22则促进PD-L1降解,增敏免疫治疗。

此外,TRIM28通过上调PD-L1促进胃癌免疫逃逸。调控UPS的E3/DUB平衡,有望逆转免疫抑制,提升现有免疫疗法响应率。

5.微环境调控

肿瘤转移不仅依赖癌细胞自身,还离不开基质“帮凶”。

图3.泛素化与去泛素化

对癌症特征的调控机制

FBXW2通过降解β-catenin抑制肺癌转移,而BAP1则稳定KLF5促进乳腺癌扩散【图3】。

更令人意外的是,肠道菌群代谢物丙酸盐能上调E3连接酶HECTD2,降解EHMT2诱导结直肠癌凋亡。

这些发现将UPS的调控视角,从癌细胞本身拓展到了复杂的微环境与微生物组网络。

6.PROTAC降解

靶向UPS本身也成为治疗策略。PROTACs采用“事件驱动”模式,诱导E3酶为靶点打上降解标签【图7】。

图7.泛素-蛋白酶体系统调控蛋白质作用

机制示意图及其对应治疗策略

临床阶段的ARV-110高效降解雄激素受体AR)对抗前列腺癌;ARV-471使雌激素受体ER)表达下调超90%,为攻克耐药突变提供了全新路径。

7.分子胶老药

相比PROTACs,分子胶水体小且成药性更佳。

图7.泛素-蛋白酶体系统调控蛋白质作用

机制示意图及其对应治疗策略

CC-90009强制募集CRL4⁽CRBN⁾降解GSPT1,在白血病II期临床中展现潜力。

老药吲哚美辛则利用SYVN1诱导整合素αvβ3降解,抑制食管鳞癌生长【图7】。这些策略共同拓宽了UPS在抗癌药物开发中的应用边界。

8.靶向DUB

耐药癌症治疗失败的核心原因。USP8抑制剂DC-U4106能有效抑制乳腺癌生长,并逆转肺癌细胞对吉非替尼的耐药性。

图7.泛素-蛋白酶体系统调控蛋白质作用

机制示意图及其对应治疗策略

在胰腺癌中,USP25/28抑制剂单用即表现出强效抗肿瘤活性【图7】。

这些证据表明,将DUB抑制剂与化疗或靶向药联用,可协同增效,克服现有疗法的耐药问题,为晚期患者带来新的治疗希望。

文章小结

Summary of the article

本研究证实UPS通过调控关键癌蛋白稳定性深度参与癌症全周期进程,靶向E3连接酶PROTAC技术已进入II期临床,展现出优于传统蛋白酶体抑制剂的精准降解优势,为抗癌药物开发提供了新策略。

有生信分析需求的同学快来联系生信百事通吧!有消息一定及时回复!

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  1. CONNECT:[ UseTime:0.001024s ] mysql:host=127.0.0.1;port=3306;dbname=i460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001530s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000663s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000677s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001425s ]
  6. SELECT * FROM `set` [ RunTime:0.000600s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001447s ]
  8. SELECT * FROM `article` WHERE `id` = 511386 LIMIT 1 [ RunTime:0.001158s ]
  9. UPDATE `article` SET `lasttime` = 1777714784 WHERE `id` = 511386 [ RunTime:0.004791s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000742s ]
  11. SELECT * FROM `article` WHERE `id` < 511386 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001348s ]
  12. SELECT * FROM `article` WHERE `id` > 511386 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001111s ]
  13. SELECT * FROM `article` WHERE `id` < 511386 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001719s ]
  14. SELECT * FROM `article` WHERE `id` < 511386 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001609s ]
  15. SELECT * FROM `article` WHERE `id` < 511386 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001722s ]
0.208718s