hsa_circRNA_0000596促进宫颈癌细胞侵袭和转移的机制研究

张广凤; 陈珏; 王成海

doi:10.7619/jcmp.20242338

hsa_circRNA_0000596促进宫颈癌细胞侵袭和转移的机制研究

张广凤^{1, 2},
陈珏³,
王成海^1, ,

1.
扬州大学医学院病理学教研室, 江苏扬州, 225009
2.
江苏省宝应县人民医院妇科, 江苏宝应, 225800
3.
扬州大学附属医院肿瘤科, 江苏扬州, 225012

基金项目:

江苏省中医药科技发展计划项目 ZD202330

详细信息

通讯作者:
王成海, E-mail: chwang@yzu.edu.cn

中图分类号: R737.3;R319;R363
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出版历程
- 收稿日期: 2024-06-02
- 修回日期: 2024-07-28
- 刊出日期: 2024-10-27

Mechanism of hsa_circRNA_0000596 in promoting invasion and metastasis of cervical cancer cells

1.
Teaching and Research Office of Pathology, Medical College of Yangzhou University, Yangzhou, Jiangsu, 225009
2.
Department of Gynecology, Baoying County People's Hospital of Jiangsu Province, Baoying, Jiangsu, 225800
3.
Department of Oncology, the Affiliated Hospital of Yangzhou University, Yangzhou, Jiangsu, 225012

摘要

摘要:
目的
探讨hsa_circRNA_000596(circ-596)促进宫颈癌细胞侵袭和转移的作用机制。
方法
收集69例宫颈鳞状细胞癌(CSCC)手术患者的CSCC组织、癌旁正常宫颈组织及临床资料。采用RNA原位杂交(RISH)技术检测circ-596阳性表达情况, 并分析其与CSCC患者临床特征的关系。采用Transwell实验检测宫颈癌细胞的侵袭能力; 采用实时荧光定量聚合酶链反应(qRT-PCR)实验检测circ-596对下游靶基因的影响; 采用双荧光素酶报告基因实验验证miR-197-3p对下游靶基因RNF146的调控作用; 采用Rescue实验分析circ-596对miR-197-3p/RNF146信号通路及细胞侵袭能力的影响。
结果
circ-596在CSCC组织中主要呈阳性表达，阳性表达率为63.77%(44/69), 高于癌旁正常组织的17.39%(12/69), 差异有统计学意义(χ²=8.254, P=0.004)。circ-596阳性表达与肿瘤分化程度、淋巴结转移均密切相关(P < 0.05)。Transwell实验结果显示，与对照细胞相比，过表达circ-596的宫颈癌细胞侵袭数目增加，敲低circ-596表达的细胞侵袭数目减少，差异均有统计学意义(P < 0.05)。生物信息学预测结果显示, miR-197-3p是circ-596的下游靶基因, RNF146是miR-197-3p的下游靶基因。qRT-PCR实验结果显示，过表达circ-596能下调miR-197-3p的表达，降低circ-596表达能上调miR-197-3p的表达，差异有统计学意义(P < 0.05)。双荧光素酶报告基因实验结果显示, miR-197-3p与RNF146基因的3'UTR结合，从而抑制荧光素酶相对活性。Rescue实验结果显示, circ-596能够抑制miR-197-3p的表达，进而促进RNF146的表达，提升宫颈癌细胞的侵袭能力。
结论
CSCC组织中circ-596主要呈阳性表达，且其阳性表达情况与肿瘤分化程度和淋巴结转移密切相关。circ-596通过结合miR-197-3p, 促进RNF146的表达，进而促进宫颈癌细胞的侵袭和转移。
- 宫颈鳞状细胞癌 /
- hsa_circRNA_0000596 /
- 微小RNA-197-3p /
- RNF146基因 /
- 侵袭 /
- 转移
Abstract:
Objective
To investigate the mechanism of hsa_circRNA_000596 (circ-596) in promoting invasion and metastasis of cervical cancer cells.
Methods
The cervical squamous cell carcinoma (CSCC) tissue, normal cervical tissue adjacent to cancer and clinical data of 69 cases with CSCC were collected. RNA in situ hybridization (RISH) was used to detect the expression of circ-596 and analyze its association with clinical data of CSCC. The invasive ability of cervical cancer cells was detected by Transwell assay; the regulation of downstream target gene by circ-596 was detected by quantitative reverse transcriptase PCR (qRT-PCR). Dual luciferase reporting experiment was used to verify the regulation of miR-197-3p on the downstream target gene RNF146; the regulation of miR-197-3p/RNF146 by circ-596 and its effect on invasion ability were analyzed in rescue experiment.
Results
Circ-596 was mainly positively expressed in CSCC tissues, and the positive expression rate was 63.77%(44/69), which was higher than 17.39% (12/69) in adjacent normal tissues (χ²=8.254, P=0.004). Circ-596 positive expression was closely correlated with tumor differentiation and lymph node metastasis (P < 0.05). The results of Transwell experiment showed that compared with the control cells, the number of cervical cancer cells with overexpression of circ-596 increased, and the number of cells with knockdown expression of circ-596 decreased (P < 0.05). Bioinformatics prediction results showed that miR-197-3p was the downstream target gene of circ-596, and RNF146 was the downstream target gene of miR-197-3p. The results of qRT-PCR showed that overexpression of circ-596 could down-regulate the expression of miR-197-3p, and down-expression of circ-596 could up-regulate the expression of miR-197-3p (P < 0.05). The results of dual luciferase reporter gene experiments showed that miR-197-3p bound to the 3'UTR of RNF146 gene, thereby inhibiting the relative activity of luciferase. Rescue experiment results showed that circ-596 could inhibit the expression of miR-197-3p, and thereby promoting the expression of RNF146, and enhancing the invasion ability of cervical cancer cells.
Conclusion
Circ-596 is mainly positively expressed in CSCC tissues, and its positive expression is closely related to the degree of tumor differentiation and lymph node metastasis. Circ-596 promotes the expression of RNF146 by binding to miR-197-3p, thereby promoting the invasion and metastasis of cervical cancer cells.
- cervical squamous cell carcinoma /
- hsa_circRNA_0000596 /
- microRNA 197-3p /
- RNF146 gene /
- invasion /
- metastasis

HTML全文

图 1 不同组织中circ-596 RNA表达的RISH实验结果

A: CSCC组织(circ-596阳性物质为棕黄色颗粒，即红色箭头所指); B: 癌旁正常宫颈组织(circ-596呈阴性反应)。

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图 2 circ-596表达对宫颈癌SiHa细胞侵袭能力的影响

2组比较, *P < 0.05。

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图 3 circ-596对miR-197-3p的影响

与NC比较, *P < 0.05。

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图 4 双荧光素酶报告基因实验结果

A: RNF146 3′UTR与miR-197-3p种子序列存在结合位点; B: 双荧光素酶报告质粒与野生型或突变型RNF146 3′UTR的关系图; C: 野生型或突变型RNF146 3′UTR质粒与miR-197-3p共转染后的荧光素酶相对活性(与NC比较, *P < 0.05)。

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图 5 Rescue实验检测circ-596对miR-197-3p/RNF146信号通路和细胞侵袭能力的影响

A: 各组细胞miR-197-3p相对表达量(与NC组比较, *P < 0.05); B: 各组细胞RNF146蛋白表达量(与NC组比较, *P < 0.05); C: 各组细胞的Transwell侵袭实验结果。

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表 1 CSCC组织中circ-596表达情况与患者临床特征的关系[n(%)]

特征	分类	阳性表达组(n=44)	正常或阴性表达组(n=25)	χ²	P
年龄	<50岁	25(56.82)	14(56.00)	0.004	0.947
	≥50岁	19(43.18)	11(44.00)
人乳头瘤病毒感染	有	24(54.55)	13(52.00)	0.042	0.839
	无	20(45.45)	12(48.00)
肿瘤直径	≤4 cm	30(68.18)	16(64.00)	0.125	0.723
	>4 cm	14(31.82)	9(36.00)
肿瘤分化程度	高分化	14(31.82)	16(64.00)	6.719	0.010
	中-低分化	30(68.18)	9(36.00)
淋巴结转移	有	22(50.00)	5(20.00)	6.024	0.014
	无	22(50.00)	20(80.00)
TNM分期	Ⅰ~Ⅱ期	22(50.00)	14(56.00)	0.641	0.423
	Ⅲ期	22(50.00)	11(44.00)

下载: 导出CSV

表 2 宫颈癌细胞侵袭数目、miR-197-3p RNA表达量、RNF146蛋白水平(n=3)

组别	miR-197-3p相对表达量	侵袭细胞数目/(个/视野)	RNF146蛋白表达量
NC组	1.963±0.177	65.6±6.4	1.000±0
circ-596组	1.167±0.121^*	97.2±7.6^*	1.901±0.059^*
anti-circ-596组	3.900±0.173^*	44.1±3.1^*	0.602±0.058^*
circ-596+miR-197-3p组	2.067±0.120	67.8±5.8	1.102±0.057
circ-596+anti-miR-197-3p组	0.700±0.058^*	127.9±6.7^*	3.701±0.153^*
anti-circ-596+miR-197-3p组	5.300±0.289^*	26.5±2.2^*	0.334±0.086^*
anti-circ-596 +anti-miR-197-3p组	2.000±0.208	68.3±3.1	1.033±0.088
与NC组比较, *P < 0.05。

下载: 导出CSV

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施引文献(2)

期刊类型引用(2)

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