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新疆医科大学第一附属医院耳鼻喉科,新疆 乌鲁木齐 830054
阿依恒•曲库尔汗,E-mail:ayhen979@sina.com
纸质出版日期:2023-05-25,
收稿日期:2022-10-21,
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张波,王松,阿依恒·曲库尔汗 .lncRNA NEAT1通过抑制miR-let-7a激活BZW2促进喉乳头状瘤细胞的增殖和凋亡逃逸[J].局解手术学杂志,2023,32(05):382-388.
ZHANG Bo,WANG Song,Ayiheng·Qukuerhan .lncRNA NEAT1 promoting the proliferation and apoptosis escape of laryngeal papilloma cells by activating BZW2 through the inhibition of miR-let-7a[J].JOURNAL OF REGIONAL ANATOMY AND OPERATIVE SURGERY,2023,32(05):382-388.
张波,王松,阿依恒·曲库尔汗 .lncRNA NEAT1通过抑制miR-let-7a激活BZW2促进喉乳头状瘤细胞的增殖和凋亡逃逸[J].局解手术学杂志,2023,32(05):382-388. DOI: 10.11659/jjssx.10E022108.
ZHANG Bo,WANG Song,Ayiheng·Qukuerhan .lncRNA NEAT1 promoting the proliferation and apoptosis escape of laryngeal papilloma cells by activating BZW2 through the inhibition of miR-let-7a[J].JOURNAL OF REGIONAL ANATOMY AND OPERATIVE SURGERY,2023,32(05):382-388. DOI: 10.11659/jjssx.10E022108.
目的
2
探讨长链非编码RNA核富集转录本1(lncRNA NEAT1)对喉乳头状瘤(LP)细胞的增殖和凋亡逃逸的调控作用和机制。
方法
2
培养人喉乳头状瘤细胞Hs840.T,将正常人口腔上皮细胞(HOECs)作为对照。将Hs840.T分为lncRNA NEAT1过表达载体(pcDNA-NEAT1)组、pcDNA-NEAT1阴性对照(pcDNA-NC)组、沉默lncRNA NEAT1的小干扰RNA载体(siNEAT1)组、siNEAT1的阴性对照(siNC)组、miR-let-7a的模拟物(mimic)组、mimic阴性对照(mimic-NC)组、miR-let-7a抑制剂(inhibitor)组、inhibitor阴性对照(inhibitor-NC)组、沉默碱性亮氨酸拉链和W2结构域2(BZW2)的小干扰RNA载体(siBZW2)组、siBZW2的阴性对照(siBZW2-NC)组、pcDNA-NEAT1联合siBZW2给药(pcDNA-NEAT1+siBZW2)组、pcDNA-NEAT1联合siBZW2-NC给药(pcDNA-NEAT1+siBZW2-NC)组。qRT-PCR检测各组中lncRNA NEAT1及其预测靶分子miR-let-7a的表达。Western blot和qRT-PCR检测BZW2的表达。双荧光素酶报告基因实验检测Hs840.T中lncRNA NEAT1和miR-let-7a以及miR-let-7a和BZW2的靶向关系。MTT实验测定Hs840.T的增殖能力。Annexin V-FITC/PI双染法检测Hs840.T的凋亡逃逸能力。
结果
2
Hs840.T中的lncRNA NEAT1和BZW2表达高于HOECs(
P
<
0.05),而miR-let-7a表达低于HOECs(
P
<
0.05)。双荧光素酶报告基因实验结果表明,Hs840.T中lncRNA NEAT1吸附抑制miR-let-7a并上调BZW2的表达(
P
<
0.05),且BZW2是miR-let-7a的靶基因。与pcDNA-NC组相比,pcDNA-NEAT1组Hs840.T的增殖率增加(
P
<
0.05),早期、晚期凋亡率均降低(
P
<
0.05);与siNC组相比,siNEAT1组Hs840.T的增殖率降低(
P
<
0.05),早期、晚期凋亡率均增加(
P
<
0.05)。另外,与pcDNA-NEAT1+siBZW2-NC组相比,pcDNA-NEAT1+siBZW2组Hs840.T的增殖率降低(
P
<
0.05),早期、晚期凋亡率均增高(
P
<
0.05)。
结论
2
lncRNA NEAT1通过抑制miR-let-7a激活BZW2促进LP细胞的增殖和凋亡逃逸。
Objective
2
To investigate the regulatory effect of long non-coding RNA nuclear enriched abundant transcript 1 (lncRNA NEAT1) on the proliferation and apoptosis escape of laryngeal papilloma (LP) cells and its mechanism.
Methods
2
Human laryngeal papilloma cells Hs840.T were cultured
and the normal human oral epithelial cells (HOECs) were used as the control.Then
the Hs840.T were divided into the lncRNA NEAT1 over-expression vector (pcDNA-NEAT1) group
pcDNA-NEAT1 negative control (pcDNA-NC) group
lncRNA NEAT1 silencing small interfering RNA vector (siNEAT1) group
siNEAT1 negative control (siNC) group
mimic of miR-let-7a (mimic) group
mimic negative control (mimic-NC) group
inhibitor of miR-let-7a (inhibitor) group
inhibitor negative control (inhibitor-NC) group
basic leucine zipper and W2 domains 2 (BZW2) silencing small interfering RNA vector (siBZW2) group
siBZW2 negative control (siBZW2-NC) group
combined administration of pcDNA-NEAT1 and siBZW2 (pcDNA-NEAT1+siBZW2) group
and combined administration of pcDNA-NEAT1 and siBZW2-NC (pcDNA-NEAT1+siBZW2-NC) group.qRT-PCR was used to detect the expression of lncRNA NEAT1 and its predicted target molecule miR-let-7a in each group.Western blot and qRT-PCR were used to detect the expression of BZW2.Dual-luciferase reporter gene assay was used to investigate the targeting relationship between lncRNA NEAT1 and miR-let-7a and the targeting relationship between miR-let-7a and BZW2 in Hs840.T.MTT assay was used to determine the proliferation ability of Hs840.T.Annexin V-FITC/PI double staining assay was used to determine the apoptosis escape ability of Hs840.T.
Results
2
The expression of lncRNA NEAT1 and BZW2 in Hs840.T were higher than those in HOECs (
P
<
0.05)
while the expression of miR-let-7a in Hs840.T was lower than that in HOECs (
P
<
0.05).The results of dual-luciferase reporter gene assay showed that lncRNA NEAT1 sponged and inhibited miR-let-7a
thereby up regulating the expression of BZW2 in Hs840.T (
P
<
0.05)
and BZW2 was a target gene of miR-let-7a.Compared with the pcDNA-NC group
the pcDNA-NEAT1 group showed a higher proliferation rate of Hs840.T(
P
<
0.05)
and lower early and later apoptosis rates (
P
<
0.05);compared with the siNC group
the siNEAT1 group showed a lower proliferation rate of Hs840.T (
P
<
0.05)
and higher early and later apoptosis rates (
P
<
0.05).In addition
compared with the pcDNA-NEAT1+siBZW2-NC group
the pcDNA-NEAT1+siBZW2 group showed a lower proliferation rate of Hs840.T (
P
<
0.05)
and higher early and later apoptosis rates (
P
<
0.05).
Conclusion
2
lncRNA NEAT1 promotes the proliferation and apoptosis escape of LP cells by activating BZW2 through the inhibition of miR-let-7a.
喉乳头状瘤长链非编码RNA核富集转录本1miR-let-7a碱性亮氨酸拉链和W2结构域2细胞凋亡细胞增殖
laryngeal papillomalong non-coding RNA nuclear enriched abundant transcript 1miR-let-7abasic leucine zipper and W2 domains 2cell apoptosiscell proliferation
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