scholarly journals Long Non-Coding RNA SNHG19 Promotes Breast Cancer Progression by Regulating miR-299-5p

2021 ◽  
Author(s):  
Hongquan Lu ◽  
Zhenjia Jiang
Keyword(s):  
Breast Cancer ◽  
Cell Proliferation ◽  
Tumor Growth ◽  
Cancer Cells ◽  
Cell Lines ◽  
Cancer Progression ◽  
Breast Cancer Cells ◽  
Migration And Invasion ◽  
Cancer Tissues

Abstract Background: Accumulating evidence has suggested that long noncoding RNA (lncRNA) played crucial roles in the development of human malignances including breast cancer. SNHG19 is a newly identified lncRNA which exerted oncogenic function in non-small cell lung cancer, but whether SNHG19 was involved the development of other cancer, such as breast cancer still unclear. Methods: qRT-PCR was performed to examine the expression of SNHG19 and miR-299-5p in breast cancer tissues and cell lines. Cell proliferation was measure using CCK-8 and colony formation assay. Cell migration and invasion ability was detected by wound healing assay and transwell invasion assay. Bioinformatics analysis, dual luciferase reporter assay, RIP assay and Pull down assay were used to verify the direct binding between SNHG19 and miR-299-5p. The xenotransplantation mouse model was established to explore the effect of SNHG19 on breast cancer tumor growth in vivo.Results: We found that SNHG19 expression level was up-regulated in breast cancer tissues and cell lines, while miR-299-5p expression was down-regulated in breast cancer tissues and it was negatively correlated with SNHG19 expression. Silence of SNHG19 inhibited breast cancer cells proliferation, migration and invasion in vitro. Moreover, SNHG19 knockdown suppressed tumor growth of breast cancer cells in vivo. Mechanistically, SNHG19 acted as a ceRNA (competitive endogenous RNA) to sponge miR-299-5p. Finally, the rescue assays further confirmed that miR-299-5p inhibitor reversed the inhibitory effects of SNHG19 knockdown on breast cancer cell proliferation, migration and invasion.Conclusions: In conclusion, our findings proved that SNHG19 promoted breast cancer progression via sponging miR-299-5p and might function as promising prognostic indicator and therapeutic target for breast cancer.

LncRNA NEAT1 accelerates breast cancer progression through regulating miR-410-3p/ CCND1 axis

2020 ◽  
Vol 29 (2) ◽  
pp. 277-290
Author(s):  
Xuan Liu ◽  
Weirong Yao ◽  
Haiwei Xiong ◽  
Qiang Li ◽  
Yingliang Li
Keyword(s):  
Breast Cancer ◽  
Tumor Growth ◽  
Cancer Cells ◽  
Cancer Progression ◽  
Breast Cancer Cells ◽  
Breast Cancer Progression ◽  
Cell Counting ◽  
Luciferase Reporter ◽  
Cancer Tissues

BACKGROUND: Breast cancer is the most common malignant tumor and usually occurs in women. Studies have shown that lncRNA nuclear enriched abundant transcript 1 (NEAT1) contributes to breast cancer progression. This study intends to further investigate the molecular mechanism of NEAT1 in breast cancer. METHODS: The expression levels of NEAT1, miR-410-3p and Cyclin D1 (CCND1) were detected by quantitative real-time PCR (qRT-PCR) in breast cancer tissues and cells. Kaplan-Meier analysis and the log-rank test were performed to determine the relationship between NEAT1 and overall survival. Cell Counting Kit-8 (CCK-8) assay analyzed cell proliferation. Transwell assay was performed to examine cell migration and invasion. The protein levels of CCND1 and epithelial-mesenchymal transition (EMT)-related proteins (E-cadherin, N-cadherin and Vimentin) were measured by western blot. The target relationship was predicted by bioinformatics analysis, and confirmed by luciferase reporter assay and RNA Immunoprecipitation (RIP) assay. Xenograft analysis was used to evaluate the tumor growth in vivo. RESULTS: NEAT1 and CCND1 were upregulated, while miR-410-3p was down-regulated in breast cancer tissues and cells. Higher NEAT1 expression level was associated with lower survival rate of breast cancer patients. Knockdown of miR-410-3p restored silenced NEAT1-mediated the inhibition of on proliferation, migration, invasion and EMT of breast cancer cells. In addition, NEAT1 regulated CCND1 expression by sponging miR-410-3p in breast cancer cells. NEAT1 knockdown blocked the tumor growth in vivo. CONCLUSION: NEAT1 induced breast cancer progression by regulating the miR-410-3p/CCND1 axis, indicating that NEAT1 may be a potential therapeutic target in breast cancer.

scholarly journals Silencing of KIF3B Suppresses Breast Cancer Progression by Regulating EMT and Wnt/β-Catenin Signaling

2021 ◽  
Vol 10 ◽  
Author(s):  
Chengqin Wang ◽  
Runze Zhang ◽  
Xiao Wang ◽  
Yan Zheng ◽  
Huiqing Jia ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cancer Cells ◽  
Cell Lines ◽  
Cancer Progression ◽  
Breast Cancer Cells ◽  
Breast Cancer Progression ◽  
Migration And Invasion ◽  
Breast Cancer Cell Lines ◽  
Mesenchymal Transition ◽  
Cancer Tissues

Breast cancer is the most common malignant tumors in women. Kinesin family member 3B (KIF3B) is a critical regulator in mitotic progression. The objective of this study was to explore the expression, regulation, and mechanism of KIF3B in 103 cases of breast cancer tissues, 35 metastatic lymph nodes and breast cancer cell lines, including MDA-MB-231, MDA-MB-453, T47D, and MCF-7. The results showed that KIF3B expression was up-regulated in breast cancer tissues and cell lines, and the expression level was correlated with tumor recurrence and lymph node metastasis, while knockdown of KIF3B suppressed cell proliferation, migration, and invasion both in vivo and in vitro. In addition, UALCAN analysis showed that KIF3B expression in breast cancer is increased, and the high expression of KIF3B in breast cancer is associated with poor prognosis. Furthermore, we found that silencing of KIF3B decreased the expression of Dvl2, phospho-GSK-3β, total and nucleus β-catenin, then subsequent down-regulation of Wnt/β-catenin signaling target genes such as CyclinD1, C-myc, MMP-2, MMP-7 and MMP-9 in breast cancer cells. In addition, KIF3B depletion inhibited epithelial mesenchymal transition (EMT) in breast cancer cells. Taken together, our results revealed that KIF3B is up-regulated in breast cancer which is potentially involved in breast cancer progression and metastasis. Silencing KIF3B might suppress the Wnt/β-catenin signaling pathway and EMT in breast cancer cells.

scholarly journals Highly expressed SLCO1B3 inhibits the occurrence and development of breast cancer and can be used as a clinical indicator of prognosis

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Tiantian Tang ◽  
Guiying Wang ◽  
Sihua Liu ◽  
Zhaoxue Zhang ◽  
Chen Liu ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cell Proliferation ◽  
Cancer Cells ◽  
Cell Lines ◽  
Cancer Cell ◽  
Breast Cancer Cell ◽  
Breast Cancer Cells ◽  
Migration And Invasion ◽  
Breast Cancer Cell Lines

AbstractThe role of organic anion transporting polypeptide 1B3 (SLCO1B3) in breast cancer is still controversial. The clinical immunohistochemical results showed that a greater proportion of patients with negative lymph nodes, AJCC stage I, and histological grade 1 (P < 0.05) was positively correlated with stronger expression of SLCO1B3, and DFS and OS were also increased significantly in these patients (P = 0.041, P = 0.001). Further subgroup analysis showed that DFS and OS were significantly enhanced with the increased expression of SLCO1B3 in the ER positive subgroup. The cellular function assay showed that the ability of cell proliferation, migration and invasion was significantly enhanced after knockdown of SLCO1B3 expression in breast cancer cell lines. In contrast, the ability of cell proliferation, migration and invasion was significantly reduced after overexpress the SLCO1B3 in breast cancer cell lines (P < 0.05). Overexpression or knockdown of SLCO1B3 had no effect on the apoptotic ability of breast cancer cells. High level of SLCO1B3 expression can inhibit the proliferation, invasion and migration of breast cancer cells, leading to better prognosis of patients. The role of SLCO1B3 in breast cancer may be related to estrogen. SLCO1B3 will become a potential biomarker for breast cancer diagnosis and prognosis assessment.

ILF3-AS1 promotes cell proliferation and inhibits cell apoptosis of breast cancer by binding with miR-4429 to upregulate RAB14

2021 ◽  
pp. 096032712198942
Author(s):  
Xiaoxue Zhang ◽  
Xianxin Xie ◽  
Kuiran Gao ◽  
Xiaoming Wu ◽  
Yanwei Chen ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cell Proliferation ◽  
Cancer Cells ◽  
Breast Cancer Cell ◽  
Cell Apoptosis ◽  
Breast Cancer Cells ◽  
Migration And Invasion ◽  
Cancer Cell Proliferation ◽  
Breast Cancer Cell Proliferation ◽  
Cancer Tissues

As one of the leading causes of cancer-related deaths among women, breast cancer accounts for a 30% increase of incidence worldwide since 1970s. Recently, increasing studies have revealed that the long non-coding RNA ILF3-AS1 is involved in the progression of various cancers. Nevertheless, the role of ILF3-AS1 in breast cancer remains largely unknown. In the present study, we found that ILF3-AS1 was highly expressed in breast cancer tissues and cells. ILF3-AS1 silencing inhibited breast cancer cell proliferation, migration and invasion, and promoted cell apoptosis. ILF3-AS1 bound with miR-4429 in breast cancer cells. Moreover, RAB14 was a downstream target of miR-4429, and miR-4429 expression was negatively correlated with RAB14 or ILF3-AS1 expression in breast cancer tissues. The result of rescue experiments demonstrated that overexpression of RAB14 can reverse the inhibitory effect of ILF3-AS1 knockdown on breast cancer cell proliferation, migration and invasion. Overall, ILF3-AS1 promotes the malignant phenotypes of breast cancer cells by interacting with miR-4429 to regulate RAB14, which might offer a new insight into the underlying mechanism of breast cancer.

scholarly journals Atractylenolide-I Suppresses Tumorigenesis of Breast Cancer by Inhibiting Toll-Like Receptor 4-Mediated Nuclear Factor-κB Signaling Pathway

2020 ◽  
Vol 11 ◽  
Author(s):  
Fangyi Long ◽  
Hong Lin ◽  
Xiqian Zhang ◽  
Jianhui Zhang ◽  
Hongtao Xiao ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cancer Cells ◽  
Signaling Pathway ◽  
Breast Cancer Cells ◽  
Migration And Invasion ◽  
Toll Like Receptor ◽  
Toll Like Receptor 4 ◽  
Atractylenolide I ◽  
Cancer Tissues

Background: Toll-like receptor 4 (TLR4) is an essential sensor related to tumorigenesis, and overexpression of TLR4 in human tumors often correlates with poor prognosis. Atractylenolide‐I (AT-I), a novel TLR4-antagonizing agent, is a major bioactive component from Rhizoma Atractylodes Macrocephalae. Emerging evidence suggests that AT-I exerts anti-tumor effects on various cancers such as colorectal cancer, bladder cancer and melanoma. Nevertheless, the effects of AT-I on mammary tumorigenesis remain unclear.Methods: In order to ascertain the correlation of TLR4/NF-κB pathway with breast cancer, the expression of TLR4 and NF-κB in normal breast tissues and cancer tissues with different TNM-stages was detected by human tissue microarray and immunohistochemistry technology. The effects of AT-I on tumorigenesis were investigated by cell viability, colony formation, apoptosis, migration and invasion assays in two breast cancer cells (MCF-7 and MDA-MB-231), and N-Nitroso-N-methylurea induced rat breast cancer models were developed to evaluate the anti-tumor effects of AT-I in vivo. The possible underlying mechanisms were further explored by western blot and ELISA assays after a series of LPS treatment and TLR4 knockdown experiments.Results: We found that TLR4 and NF-κB were significantly up-regulated in breast cancer tissues, and was correlated with advanced TNM-stages. AT-I could inhibit TLR4 mediated NF-κB signaling pathway and decrease NF-κB-regulated cytokines in breast cancer cells, thus inhibiting cell proliferation, migration and invasion, and inducing apoptosis of breast cancer cells. Furthermore, AT-I could inhibit N-Nitroso-N-methylurea-induced rat mammary tumor progression through TLR4/NF-κB pathway.Conclusion: Our findings demonstrated that TLR4 and NF-κB were over expressed in breast cancer, and AT-I could suppress tumorigenesis of breast cancer via inhibiting TLR4-mediated NF-κB signaling pathway.

Cholesterol synthesis inhibitors prevent growth and metastasis of breast cancer cells

2017 ◽  
Author(s):  
◽  
Sandy Goyette
Keyword(s):  
Breast Cancer ◽  
Tumor Growth ◽  
Cancer Cells ◽  
Breast Cancer Cells ◽  
Hormone Replacement ◽  
Migration And Invasion ◽  
Breast Cancers ◽  
Mammosphere Formation ◽  
Increased Risk

[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Clinical trials and studies show that post-menopausal women undergoing hormone replacement therapy containing a combination of estrogen and progestin (P) have an increased risk of breast cancer compared with women taking estrogen alone or placebo. Using animal models, we previously showed that both natural and synthetic P accelerate the development of breast tumors in vivo and increase their metastasis to lymph nodes. Our studies included an assessment of medroxyprogesterone acetate (MPA), a synthetic P that is widely used clinically. Having established the deleterious effects associated with P, we sought to better understand the mechanisms underlying breast tumor growth and metastasis. We show that exposure of human breast cancer cells to synthetic P causes the overexpression of several cancer stem cell (CSC) markers, which we further demonstrate to be functionally significant, since mammosphere formation increases. Based on our observations, we contend that exposure of breast cancer cells to synthetic P, including MPA, leads to an enrichment of CSCs, which would likely support the development of P-accelerated tumors in vivo. An enriched CSC pool greatly increases the likelihood that resistance to therapy will arise, as well as raising the chance of metastasis. Our findings suggest that clinicians may be able to combat P-dependent tumor growth by blocking PR-mediated induction of CSC markers by immunotherapy, tissue-selective anti-Ps, or through a combination approach involving both immunotherapy against CD44 and small-molecule targeting of PR. We carried out a series of studies to determine whether RO 48-8076, an oxidosqualene cyclase (OSC) inhibitor, might reduce P-induced CSC expansion. In previous studies, we showed that RO diminishes tumor formation in vivo and found that it exerts its potent anti-tumor effects in part through PR degradation. This in turn reduces P-induced expression of CD44, a process we showed to be PR-dependent. Importantly, treatment of hormone-responsive breast cancer cells with RO abolished MPA-induced mammosphere formation. We therefore contend that RO may represent a novel means by which to prevent MPA-induced CSC expansion. RO treatment may also represent a novel strategy of reducing resistance to anti-hormone therapies, given that survival of stem cells following chemotherapy is the major reason why such treatments fail. In addition to being a novel treatment option for hormone-dependent breast cancers, we show that RO might also be used to treat highly aggressive triple negative breast cancers (TNBC). Herein we present in vivo data showing that RO reduces the metastasis of TNBCs to the lungs. We hypothesize that by virtue of its ability to downregulate MetAP2 protein, RO might target the metastatic cascade by inhibiting angiogenesis and cell cycle progression, or by inducing apoptosis. Further mechanistic studies are needed to elucidate the importance of RO-mediated MetAP2 downregulation. We also demonstrate that RO inhibits TNBC cell migration and invasion, though the mechanism through which RO exerts these effects requires more in-depth study. Nevertheless, we show that RO, a compound hitherto considered as simply an inhibitor of cholesterol biosynthesis, clearly possesses potent anti-cancer effects. Its potential as an agent which might be used to combat both hormone-dependent and hormone-independent breast cancers, including TNBC, warrants further investigation.

scholarly journals Atractylenolide-I suppresses tumorigenesis of breast cancer by inhibiting toll-like receptor 4 (TLR4)-mediated NF-κB signaling pathway

2020 ◽  
Author(s):  
Fangyi Long ◽  
Hong Lin ◽  
Xiqian Zhang ◽  
Jianhui Zhang ◽  
Hongtao Xiao ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cancer Cells ◽  
Signaling Pathway ◽  
Breast Cancer Cells ◽  
Migration And Invasion ◽  
Toll Like Receptor ◽  
Toll Like Receptor 4 ◽  
Atractylenolide I ◽  
Cancer Tissues

Abstract Background: Toll-like receptor 4 (TLR4) is an essential sensor related to tumorigenesis, and overexpression of TLR4 in human tumors often correlates with poor prognosis. Atractylenolide I (AT-I) is a major bioactive component from Rhizoma Atractylodes Macrocephalae. Emerging evidence suggests that AT-I exerts anti-tumor effects on various cancers such as colorectal cancer, bladder cancer and melanoma. Nevertheless, the effects of AT-I on mammary tumorigenesis remain unclear.Methods: In order to ascertain the correlation of TLR4/NF-κB pathway with breast cancer, the expression of TLR4 and NF-κB in normal breast tissues and cancer tissues with different TNM-stages was detected by human tissue microarray (TMA) and immunohistochemistry technology. The effects of AT-I on tumorigenesis were investigated by cell viability, colony formation, apoptosis, migration and invasion assays in two breast cancer cells (MCF-7 and MDA-MB-231), and N-Nitroso-N-methylurea (NMU) induced rat breast cancer models were developed to evaluate the anti-tumor effects of AT-I in vivo. The possible underlying mechanisms were further explored by western blot and ELISA assays after a series of LPS treatment and TLR4 knockdown experiments.Results：We found that TLR4 and NF-κB were significantly up-regulated in breast cancer tissues, and was correlated with advanced TNM-stages. AT-I could inhibit TLR4 mediated NF-κB signaling pathway and decrease NF-κB-regulated cytokines in breast cancer cells, thus inhibiting cell proliferation, migration and invasion, and inducing apoptosis of breast cancer cells. Furthermore, AT-I could inhibit NMU-induced rat mammary tumor progression through TLR4/NF-κB pathway.Conclusions: Our findings demonstrated that TLR4 and NF-κB were over expressed in breast cancer, and AT-I could suppress tumorigenesis of breast cancer via inhibiting TLR4-mediated NF-κB signaling pathway.

scholarly journals MicroRNA-137 Inhibits Cancer Progression by Targeting Del-1 in Triple-Negative Breast Cancer Cells

2019 ◽  
Vol 20 (24) ◽  
pp. 6162 ◽  
Author(s):  
Soo Jung Lee ◽  
Jae-Hwan Jeong ◽  
Seung Hee Kang ◽  
Jieun Kang ◽  
Eun Ae Kim ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cell Proliferation ◽  
Cancer Cells ◽  
Cancer Progression ◽  
Triple Negative Breast Cancer ◽  
Breast Cancer Cells ◽  
Triple Negative ◽  
Luciferase Reporter ◽  
Migration And Invasion ◽  
Mirna Regulation

MicroRNAs (miRNAs) can be used to target a variety of human malignancy by targeting their oncogenes or tumor suppressor genes. The developmental endothelial locus-1 (Del-1) might be under miRNA regulation. This study investigated microRNA-137 (miR-137) function and Del-1 expression in triple-negative breast cancer (TNBC) cells and tissues. Del-1 mRNA and miRNA-137 levels were determined via qRT-PCR in breast cancer cells (MDA-MB-231, MCF7, SK-BR3, and T-47D) and tissues from 30 patients with TNBC. The effects of miR-137 on cell proliferation, migration, and invasion were determined using MTT assays, wound healing, and Matrigel transwell assays. The luciferase reporter assay revealed direct binding of miR-137 to the 3′-UTR of Del-1. miR-137 inhibited cell proliferation, migration, and invasion of MDA-MB-231 cells. Among the 30 TNBC specimens, miR-137 was downregulated and Del-1 level in plasma was significantly elevated relative to normal controls. It is concluded that miR-137 regulates Del-1 expression in TNBC by directly binding to the Del-1 gene and cancer progression. The results implicate miR-137 as a new therapeutic biomarker for patients with TNBC.

scholarly journals Activation of the KDM5A/miRNA-495/YTHDF2/m6A-MOB3B axis facilitates prostate cancer progression

2020 ◽  
Vol 39 (1) ◽  
Author(s):  
Chen Du ◽  
Caihong Lv ◽  
Yue Feng ◽  
Siwen Yu
Keyword(s):  
Prostate Cancer ◽  
Cell Proliferation ◽  
Tumor Growth ◽  
Cell Lines ◽  
Cancer Progression ◽  
Ectopic Expression ◽  
Luciferase Reporter ◽  
Migration And Invasion

Abstract Background Accumulating evidence supports that lysine-specific demethylase 5 (KDM5) family members act as oncogenic drivers. This study was performed to elucidate the potential effects of KDM5A on prostate cancer (PCa) progression via the miR-495/YTHDF2/m6A-MOB3B axis. Methods The expression of KDM5A, miR-495, YTHDF2 and MOB3B was validated in human PCa tissues and cell lines. Ectopic expression and knockdown experiments were developed in PCa cells to evaluate their effects on PCa cell proliferation, migration, invasion and apoptosis. Mechanistic insights into the interaction among KDM5A, miR-495, YTHDF2 and MOB3B were obtained after dual luciferase reporter, ChIP, and PAR-CLIP assays. Me-RIP assay was used to determine m6A modification level of MOB3B mRNA in PCa cells. Mouse xenograft models of PCa cells were also established to monitor the tumor growth. Results KDM5A was highly expressed in human PCa tissues and cell lines. Upregulated KDM5A stimulated PCa cell proliferation, migration and invasion, but reduced cell apoptosis. Mechanistically, KDM5A, as a H3K4me3 demethylase, bound to the miR-495 promoter, which led to inhibition of its transcription and expression. As a target of miR-495, YTHDF2 could inhibit MOB3B expression by recognizing m6A modification of MOB3B mRNA and inducing mRNA degradation. Furthermore, KDM5A was found to downregulate MOB3B expression, consequently augmenting PCa cell proliferation, migration and invasion in vitro and promoting tumor growth in vivo via the miR-495/YTHDF2 axis. Conclusion In summary, our study highlights the potential of histone demethylase KDM5A activity in enhancing PCa progression, and suggests KDM5A as a promising target for PCa treatment.

LncRNA HOTAIR promotes breast cancer progression through regulating the miR-129-5p/FZD7 axis

2020 ◽  
pp. 1-10
Author(s):  
Dongdi Wu ◽  
Jia Zhu ◽  
Ying Fu ◽  
Chenqin Li ◽  
Biao Wu
Keyword(s):  
Breast Cancer ◽  
Cell Proliferation ◽  
Tumor Growth ◽  
Western Blot ◽  
Cancer Progression ◽  
Breast Cancer Progression ◽  
Western Blot Assay ◽  
Qrt Pcr ◽  
Cancer Tissues

Breast cancer is the most common malignancies worldwide. LncRNA HOX transcript antisense intergenic RNA (HOTAIR) has been shown to promote progression and metastasis of various cancers, including breast cancer. This reasearch aimed to investigate the downstream regulatory pathways of HOTAIR in breast cancer. The levels of HOTAIR and miR-129-5p were examined in breast cancer tissues and SKBR3 and MCF7 cells by quantitative real-time PCR (qRT-PCR). Cell proliferation was examined by Cell Counting Kit-8 (CCK-8) assay. Cell migration and invasion were estimated by transwell assay. Epithelial-to-mesenchymal transition (EMT)-related markers (E-cadherin, N-cadherin and Vimentin) were measured by Western blot assay. The expression of Frizzled 7 (FZD7) was detected using qRT-PCR or Western blot assay. Bioinformatics analysis, luciferase reporter assay or RNA Immunoprecipitation (RIP) assay was performed to explore the molecular mechanism of HOTAIR in breast cancer. Xenograft analysis was utilized to evaluate the tumor growth in vivo. HOTAIR and FZD7 were upregulated, while miR-129-5p was down-regulated in breast cancer tissues and cells. Knockdown of miR-129-5p reversed the effect of HOTAIR knockdown on cell proliferation, migration, invasion and EMT. FZD7 restored the inhibition of miR-129-5p on breast cancer progression. Furthermore, HOTAIR was a sponge of miR-129-5p and FZD7 was a target of miR-129-5p. Knockdown of HOTAIR inhibited the tumor growth in vivo. HOTAIR facilitated breast cancer progression by regulating the miR-129-5p/FZD7 axis, indicating that HOTAIR may be a potential biomarker and therapeutic target for breast cancer.

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