
浏览全部资源
扫码关注微信
新疆维吾尔自治区人民医院乳腺、甲状腺科,新疆 乌鲁木齐 830000
张卫群,E-mail:18690829937@163.com
收稿日期:2024-08-20,
纸质出版日期:2025-06-25
移动端阅览
张倩,李琦,马楠等.低氧条件下敲低miR-221-3p表达对乳腺癌细胞干性维持及血管生成的影响[J].局解手术学杂志,2025,34(06):471-477.
ZHANG Qian,LI Qi,MA Nan,et al.Effects of knocking down miR-221-3p expression on the stemness maintenance and angiogenesis in breast cancer cells under hypoxia conditions[J].JOURNAL OF REGIONAL ANATOMY AND OPERATIVE SURGERY,2025,34(06):471-477.
张倩,李琦,马楠等.低氧条件下敲低miR-221-3p表达对乳腺癌细胞干性维持及血管生成的影响[J].局解手术学杂志,2025,34(06):471-477. DOI: 10.11659/jjssx.08E024072.
ZHANG Qian,LI Qi,MA Nan,et al.Effects of knocking down miR-221-3p expression on the stemness maintenance and angiogenesis in breast cancer cells under hypoxia conditions[J].JOURNAL OF REGIONAL ANATOMY AND OPERATIVE SURGERY,2025,34(06):471-477. DOI: 10.11659/jjssx.08E024072.
目的
2
探究低氧条件下微小RNA-221-3p(miR-221-3p)在乳腺癌细胞中的表达情况,以及敲低其表达对乳腺癌细胞干性维持与血管生成的影响。
方法
2
将人乳腺癌细胞系MCF-7分别在常氧条件和低氧条件下培养,实时荧光定量PCR(RT-qPCR)检测细胞中miR-221-3p表达。将MCF-7细胞分为常氧组(在常氧条件下培养MCF-7细胞)、低氧组(在低氧条件下培养MCF-7细胞)、低氧+miR-221-3p NC组(在低氧条件下培养MCF-7细胞并转染miR-221-3p NC)、低氧+miR-221-3p inhibitor组(在低氧条件下培养MCF-7细胞并转染miR-221-3p inhibitor)。CCK-8法检测各组细胞增殖活性;肿瘤球形成实验检测各组细胞肿瘤球数目;流式细胞术检测各组细胞中干性标志物乙醛脱氢酶1(ALDH1)标记的细胞比例;Western blot检测各组细胞中分化抗原簇蛋白133(CD133)、跨膜黏附分子(CD44)、性别决定区Y框蛋白2(SOX2)蛋白表达;体外管形成实验检测各组细胞上清液培养下的人脐静脉血管内皮细胞(HUVEC)管形成数目;Western blot检测各组细胞中低氧诱导因子-1α(HIF-1α)、血管内皮生长因子(VEGF)蛋白表达。
结果
2
与常氧组比较,低氧组细胞中miR-221-3p及CD133、CD44、SOX2、HIF-1α、VEGF蛋白表达水平显著上调(
P
<
0.05),细胞增殖活性、肿瘤球数目、ALDH1
+
细胞比例、HUVEC成管数目均显著增加/升高(
P
<
0.05);与低氧+miR-221-3p NC组比较,低氧+miR-221-3p inhibitor组细胞中miR-221-3p及CD133、CD44、SOX2、HIF-1α、VEGF蛋白表达水平显著下调(
P
<
0.05),细胞增殖活性、肿瘤球数目、ALDH1
+
细胞比例、HUVEC成管数目均显著减少/降低(
P
<
0.05)。
结论
2
在低氧条件下,乳腺癌细胞中miR-221-3p表达上调,敲低miR-221-3p表达能够降低乳腺癌细胞干性及血管生成能力。
Objective
2
To investigate the expression of microRNA-221-3p (miR-221-3p) in breast cancer cells under hypoxia conditions, and the effects of knocking down its expression on the stemness maintenance and angiogenesis in breast cancer cells.
Methods
2
Human breast cancer cell line MCF-7 were cultured under normoxic and hypoxic conditions, and the expression of miR-221-3p in cells was detected by quantitative real-time polymerase chain reaction (RT-qPCR). MCF-7 cells were divided into normoxic group (MCF-7 cells were cultured under normoxic conditions), hypoxic group (MCF-7 cells were cultured under hypoxic conditions), hypoxia+miR-221-3p NC group (MCF-7 cells were cultured under hypoxic conditions and transfected with miR-221-3p NC), hypoxia+miR-221-3p inhibitor group (MCF-7 cells were cultured under hypoxic conditions and transfected with miR-221-3p inhibitor). The proliferation activity of cells in each group was detected by CCK-8 method; the number of cell tumor spheres in each group was detected by tumor sphere formation assay; the proportion of cells labeled with the stemness marker aldehyde dehydrogenase 1 (ALDH1) in each group was detected by flow cytometry; the expression of cluster of differentiation 133 (CD133), cluster of differentiation 44 (CD44) and sex determination region Y-box protein 2 (SOX2) of cells in each group was detected by Western blot; the number of human umbilical vein endothelial cells (HUVEC) tubes formed by cell supernatant culture in each group was detected by in vitro tube formation experiment; the expression of hypoxia-inducible factor-1α (HIF-1α) and vascular endothelial growth factor (VEGF) of cells in each group was detected by Western blot.
Results
2
Compared with normoxic group, the expression levels of miR-221-3p,and CD133, CD44, SOX2, HIF-1α, VEGF protein of cells in hypoxic group were significantly up-regulated (
P
<
0.05), and the cell proliferation activity, the number of tumor spheres, the proportion of ALDH1
+
cells and the number of HUVEC tubes were significantly increased (
P
<
0.05). Compared with hypoxia+miR-221-3p NC group, the expression levels of miR-221-3p,and CD133, CD44, SOX2, HIF-1α, VEGF protein of cells in hypoxia+miR-221-3p inhibitor group were significantly down-regulated (
P
<
0.05), and the cell proliferation activity, the number of tumor spheres, the proport
ion of ALDH1
+
cells, and the number of HUVEC were significantly decreased (
P
<
0.05).
Conclusion
2
Under hypoxic conditions, the expression of miR-221-3p in breast cancer cells is up-regulated, and knocking down the expression of miR-221-3p can reduce the stemness and angiogenesis ability of breast cancer cells.
Newman L . Oncologic anthropology:global variations in breast cancer risk,biology,and outcome [J]. J Surg Oncol , 2023 , 128 ( 6 ): 959 - 966 . doi: 10.1002/jso.27459 http://dx.doi.org/10.1002/jso.27459 .
Khan SA . Breast cancer risk reduction:current status and emerging trends to increase efficacy and reduce toxicity of preventive medication [J]. Surg Oncol Clin N Am , 2023 , 32 ( 4 ): 631 - 646 . doi: 10.1016/j.soc.2023.05.001 http://dx.doi.org/10.1016/j.soc.2023.05.001 .
Ullah A , Shehzadi S , Ullah N , et al . Hypoxia a typical target in human lung cancer therapy [J]. Curr Protein Pept Sci , 2024 , 25 ( 5 ): 376 - 385 . doi: 10.2174/0113892037252820231114045234 http://dx.doi.org/10.2174/0113892037252820231114045234 .
Kao TW , Bai GH , Wang TL , et al . Novel cancer treatment paradigm targeting hypoxia-induced factor in conjunction with current therapies to overcome resistance [J]. J Exp Clin Cancer Res , 2023 , 42 ( 1 ): 171 . doi: 10.1186/s13046-023-02724-y http://dx.doi.org/10.1186/s13046-023-02724-y .
Semenza GL . Mechanisms of breast cancer stem cell specification and self-renewal mediated by hypoxia-inducible factor 1 [J]. Stem Cells Transl Med , 2023 , 12 ( 12 ): 783 - 790 . doi: 10.1093/stcltm/szad061 http://dx.doi.org/10.1093/stcltm/szad061 .
Abolhasanzadeh N , Sarabandi S , Dehghan B , et al . Exploring the intricate relationship between miRNA dysregulation and breast cancer development:insights into the impact of environmental chemicals [J]. Front Immunol , 2024 , 15 : 1333563 . doi: 10.3389/fimmu.2024. 1333563 http://dx.doi.org/10.3389/fimmu.2024.1333563 .
Tapeh BE , Alivand MR , Solalii S . Potential interactions between miRNAS and hypoxia:a new layer in cancer hypoxia [J]. Anticancer Agents Med Chem , 2021 , 21 ( 17 ): 2315 - 2326 . doi: 10.2174/1871520621666 210201100326 http://dx.doi.org/10.2174/1871520621666210201100326 .
Fang Y , Zhang Q , Chen Z , et al . Clinical significance and immune characteristics analysis of miR-221-3p and its key target genes related to epithelial-mesenchymal transition in breast cancer [J]. Aging (Albany NY) , 2024 , 16 ( 1 ): 322 - 347 . doi: 10.18632/aging.205370 http://dx.doi.org/10.18632/aging.205370 .
Chen H . microRNA-based cancer diagnosis and therapy [J]. Int J Mol Sci , 2023 , 25 ( 1 ): 230 . doi: 10.3390/ijms25010230 http://dx.doi.org/10.3390/ijms25010230 .
Tan W , Li Z , Xia W , et al . miR-221-3p regulates hepatocellular carcinoma cell proliferation,migration and invasion via targeting LIFR [J]. Ann Hepatol , 2022 , 27 Suppl 1 : 100567 . doi: 10.1016/j.aohep. 2021.100567 http://dx.doi.org/10.1016/j.aohep.2021.100567 .
李兴亮 , 吴紫瑶 , 马继春 , 等 . miR-221-3p在人类消化道肿瘤中的研究进展 [J]. 医学研究杂志 , 2023 , 52 ( 2 ): 172 - 176 . doi: 10.11969/j.issn.1673-548X.2023.02.036 http://dx.doi.org/10.11969/j.issn.1673-548X.2023.02.036 .
Ma J , Li X , Qiu Z , et al . Correlation of miR-221-3p differential expression with clinical characteristics of gastric cancer patients [J]. Mol Biol Rep , 2024 , 51 ( 1 ): 69 . doi: 10.1007/s11033-023-08924-1 http://dx.doi.org/10.1007/s11033-023-08924-1 .
Chang W , Chang Q , Lu H , et al . MiR-221-3p facilitates thyroid cancer cell proliferation and inhibit apoptosis by targeting FOXP2 through hedgehog pathway [J]. Mol Biotechnol , 2022 , 64 ( 8 ): 919 - 927 . doi: 10.1007/s12033-022-00473-5 http://dx.doi.org/10.1007/s12033-022-00473-5 .
Shao X , Zheng Y , Huang Y , et al . Hsa-miR-221-3p promotes proliferation and migration in HER2-positive breast cancer cells by targeting LASS2 and MBD2 [J]. Histol Histopathol , 2022 , 37 ( 11 ): 1099 - 1112 . doi: 10.14670/HH-18-483 http://dx.doi.org/10.14670/HH-18-483 .
Macharia LW , Muriithi W , Heming CP , et al . The genotypic and phenotypic impact of hypoxia microenvironment on glioblastoma cell lines [J]. BMC Cancer , 2021 , 21 ( 1 ): 1248 . doi: 10.1186/s12885-021-08978-z http://dx.doi.org/10.1186/s12885-021-08978-z .
Yu F , Deng X , Zhong Y , et al . Hypoxic papillary thyroid carcinoma cells-secreted exosomes deliver miR-221-3p to normoxic tumor cells to elicit a pro-tumoral effect by regulating the ZFAND5 [J]. Exp Cell Res , 2023 , 431 ( 1 ): 113716 . doi: 10.1016/j.yexcr.2023.113716 http://dx.doi.org/10.1016/j.yexcr.2023.113716 .
Radak M , Fallahi H . Cell-cell communication in stem cells and cancer:alone but in touch [J]. Fundam Clin Pharmacol , 2024 , 38 ( 3 ): 479 - 488 . doi: 10.1111/fcp.12982 http://dx.doi.org/10.1111/fcp.12982 .
Guido CB , Sosa LDV , Perez PA , et al . Changes of stem cell niche during experimental pituitary tumor development [J]. J Neuroendocrinol , 2021 , 33 ( 12 ): e13051 . doi: 10.1111/jne.13051 http://dx.doi.org/10.1111/jne.13051 .
刘翠翠 , 张立行 , 柳素玲 . 肿瘤干细胞标志物ALDH1A1通过重塑免疫微环境促进乳腺癌进展 [J]. 中国细胞生物学学报 , 2022 , 44 ( 3 ): 405 - 412 . doi: 10.11844/cjcb.2022.03.0001 http://dx.doi.org/10.11844/cjcb.2022.03.0001 .
Grabovenko FI , Kisil OV , Pavlova GV , et al . Protein CD133 as a tumor stem cell marker [J]. Zh Vopr Neirokhir Im N N Burdenko , 2022 , 86 ( 6 ): 113 - 120 . doi: 10.17116/neiro202286061113 http://dx.doi.org/10.17116/neiro202286061113 .
Hassn Mesrati M , Syafruddin SE , Mohtar MA , et al . CD44:a multifunctional mediator of cancer progression [J]. Biomolecules , 2021 , 11 ( 12 ): 1850 . doi: 10.3390/biom11121850 http://dx.doi.org/10.3390/biom11121850 .
Zhi S , Chen C , Huang H , et al . Hypoxia-inducible factor in breast cancer:role and target for breast cancer treatment [J]. Front Immunol , 2024 , 15 : 1370800 . doi: 10.3389/fimmu.2024.1370800 http://dx.doi.org/10.3389/fimmu.2024.1370800 .
Ricciuti B , Foglietta J , Bianconi V , et al . Enzymes involved in tumor-driven angiogenesis:a valuable target for anticancer therapy [J]. Semin Cancer Biol , 2019 , 56 : 87 - 99 . doi: 10.1016/j.semcancer. 2017.11.005 http://dx.doi.org/10.1016/j.semcancer.2017.11.005 .
0
浏览量
0
下载量
0
CSCD
关联资源
相关文章
相关作者
相关机构
京公网安备11010802024621