PAR2 缺陷调整炎症微环境,以放大 STING 信号,通过阳离子 CRISPR/Cas9 纳米粒子减轻癌症转移
Xiujuan Fu1, Jianbin Li1, Yue Wu1
1Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
概括
这项研究表明,利用纳米粒子传递的CRISPR/Cas9基因编辑来准蛋白酶激活受体2 (PAR2),可以通过减少炎症和促进抗瘤反应来预防乳腺癌转移.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 纳米技术纳米技术
背景情况:
- 转移是乳腺癌死亡率和治疗失败的主要原因.
- 炎症显著促进瘤的进展,蛋白酶激活受体2 (PAR2) 在瘤细胞和炎症中发挥作用.
- 在乳腺癌通过炎症途径转移中,PAR2的作用尚未得到充分研究.
研究的目的:
- 为了研究PAR2在乳腺癌转移中的作用.
- 开发一个有效和安全的CRISPR/Cas9传递系统,以准PAR2.
- 为了探索PAR2缺乏症作为一种治疗策略,对抗乳腺癌转移.
主要方法:
- 构造的阳离子牛血清白蛋白 (BSA) 纳米颗粒用于封装CRISPR/Cas9等离子体向PAR2 (tBSA/Cas9-PAR2).
- 利用tBSA/Cas9-PAR2进行体外和体内基因编辑以诱导PAR2缺乏.
- 分析了PAR2缺乏对NLRP3炎症酶,STING信号,ROS积累和EMT的影响.
主要成果:
- tBSA/Cas9-PAR2有效地将CRISPR/Cas9传递到炎症和癌细胞中,以精确编辑PAR2基因.
- 在瘤微环境中,PAR2缺乏抑制了NLRP3炎症酶信号,并增强了STING信号.
- PAR2 缺乏导致反应性氧物种 (ROS) 的增加和表皮细胞-介质细胞转变 (EMT) 的逆转,抑制乳腺癌转移.
结论:
- 通过调节炎症微环境,PAR2在乳腺癌的进展中发挥着关键作用.
- 通过tBSA/Cas9-PAR2实现的PAR2缺乏,有效地抑制了乳腺癌转移.
- 用CRISPR/Cas9针对PAR2提供了一种有前途的治疗策略,用于对抗乳腺癌转移.
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