生物技术进展 ›› 2026, Vol. 16 ›› Issue (3): 665-676.DOI: 10.19586/j.2095-2341.2026.0036
伍宇婷1,2(
), 梁炜1,2, 王洪涛1,2, 刘翠翠1,2(
), 周家喜1,2(
)
收稿日期:2026-02-10
接受日期:2026-03-31
出版日期:2026-05-25
发布日期:2026-07-14
通讯作者:
刘翠翠,周家喜
作者简介:伍宇婷 E-mail: wuyuting@ihcams.ac.cn
基金资助:
Yuting WU1,2(
), Wei LIANG1,2, Hongtao WANG1,2, Cuicui LIU1,2(
), Jiaxi ZHOU1,2(
)
Received:2026-02-10
Accepted:2026-03-31
Online:2026-05-25
Published:2026-07-14
Contact:
Cuicui LIU,Jiaxi ZHOU
摘要:
血小板是血液中最小的无核血细胞,其中丰富的RNA和蛋白质是发挥凝血、免疫等功能的分子基础。RNA干扰是研究血小板基因功能的有力工具,但相关研究还处于初步探索阶段,目前尚无有效、稳定的血小板RNA干扰技术。为了建立高效、稳定的血小板RNA干扰技术,以小鼠外周血血小板为研究对象,分别从转染试剂、干扰RNA类型等方面进行体系优化。通过监测核酸转染效率、维持时间、血小板存活状态、基因干扰效率等进行系统评价,最终建立了以Mate Plus脂质纳米颗粒代替经典阳离子脂质体转染试剂Lipofectamine 2000、单链反义寡核苷酸代替传统双链小干扰RNA的高效RNA干扰体系,将干扰RNA的转染效率从10%以下提高至70%以上,且维持稳定转染48 h以上。在此基础上,以血小板中表达丰度极高的胸腺素β4(thymosin β4,Tmsb4x)基因为例,成功利用ASO/Mate-Plus体系实现Tmsb4x基因的有效敲降,其RNA水平降低30%以上。但是,Tmsb4x基因的敲降并不影响其蛋白表达,提示其可用于特异性研究血小板中RNA的功能。同时,仅Tmsb4x RNA的敲降可显著影响活化血小板的黏附铺展功能,提示该基因可能存在独立于蛋白外的RNA功能。综上,建立与优化的血小板RNA干扰技术,为研究血小板特定RNA功能以及血小板快速功能响应的分子基础提供了有力的工具。
中图分类号:
伍宇婷, 梁炜, 王洪涛, 刘翠翠, 周家喜. 血小板RNA干扰技术的建立与优化[J]. 生物技术进展, 2026, 16(3): 665-676.
Yuting WU, Wei LIANG, Hongtao WANG, Cuicui LIU, Jiaxi ZHOU. Establishment and Optimization of RNA Interference Technology in Platelets[J]. Current Biotechnology, 2026, 16(3): 665-676.
| 引物名称 | 引物序列(5'→3') |
|---|---|
| m-Tmsb4x-F | 5'-GCGAATCGTAATGAGGCGAG-3' |
| m-Tmsb4x-R | 5'-TGATGTGAAAGGGGCAGCAC-3' |
| m-Pf4-F | 5'-GAGGTGATCAAGGCAGGACG-3' |
| m-Pf4-R | 5'-TATAGGGGTGCTTGCCGGTC-3' |
表1 RT-qPCR引物序列
Table 1 RT-qPCR primer sequences
| 引物名称 | 引物序列(5'→3') |
|---|---|
| m-Tmsb4x-F | 5'-GCGAATCGTAATGAGGCGAG-3' |
| m-Tmsb4x-R | 5'-TGATGTGAAAGGGGCAGCAC-3' |
| m-Pf4-F | 5'-GAGGTGATCAAGGCAGGACG-3' |
| m-Pf4-R | 5'-TATAGGGGTGCTTGCCGGTC-3' |
图1 转染试剂M-Plus相较Lipo2000可高效介导血小板siRNA转染A:血小板siRNA转染实验示意图;B:免疫荧光染色显示siRNA在血小板中的定位;C:流式细胞术显示空白对照及2种转染试剂介导的血小板siRNA转染效率;D:统计图显示Lipo2000和M-Plus转染试剂介导的血小板siRNA转染效率;E:统计图显示空白对照及2种转染试剂处理下的血小板计数;F:流式检测空白对照及2种转染试剂处理下CD62P+活化血小板的比例。**、****表示差异在P0.01、P0.000 1水平上具有统计学意义;ns表示无统计学意义。
Fig. 1 M-Plus efficiently mediate siRNA transfection in platelets compared with Lipo2000
图2 ASO相较siRNA可显著提升血小板RNA转染的时效性A:流式检测48 h内无核血小板与有核细胞的siRNA转染率;B:血小板ASO和siRNA转染实验示意图;C:流式动态监测48 h内血小板siRNA和ASO转染效率;D:折线图显示48 h内血小板siRNA和ASO转染效率变化;E:统计图显示48 h内siRNA和ASO转染组的血小板计数变化;F:统计图显示48 h内siRNA和ASO转染组CD62P+活化血小板的比例变化。**、****表示差异在P0.01、P0.000 1水平上具有统计学意义;ns表示无统计学意义。
Fig. 2 ASO enhance the timeliness of RNA transfection in platelets compared with siRNA
图3 利用ASO/M-Plus转染系统可有效敲降血小板高丰度基因Tmsb4x的表达A:血小板中Tmsb4x基因靶向干扰实验示意图;B:流式检测转染24 h血小板中ASO-NC和ASO-Tmsb4x的转染率;C:统计显示ASO-NC和ASO-Tmsb4x转染组血小板的数量;D:RT-qPCR检测转染24 h 2组血小板中Tmsb4x的RNA表达;E:胞内流式检测转染24 h 2组血小板中TMSB4X蛋白表达;F:定量统计显示转染24 h 2组血小板中TMSB4X蛋白表达水平;G:胞内流式检测转染48 h 2组血小板中TMSB4X蛋白表达;H:定量统计显示转染48 h 2组血小板中TMSB4X蛋白表达水平
Fig. 3 The expression of the highly abundant platelet gene Tmsb4x could be effectively knocked down by using the ASO/M-Plus transfection system
图4 特异性敲降Tmsb4x RNA可显著降低血小板铺展面积A:设计探究敲降Tmsb4x对血小板的功能影响;B:流式统计激动剂凝血酶刺激前后2组血小板的CD62P阳性率;C:免疫荧光染色显示激动剂凝血酶刺激后2组血小板的黏附铺展形态;D:激动剂凝血酶刺激后2组血小板的铺展面积统计图。****表示差异在P0.000 1水平上具有统计学意义;ns表示无统计学意义。
Fig. 4 Specific knockdown of Tmsb4x RNA significantly reduce the platelet spreading area
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