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Xie S, Hu Y, Jin J, Fu L, Zhang C, Yang Q, Niu Y, Sheng Z. Regulation of the stem‑like properties of estrogen receptor‑positive breast cancer cells through NR2E3/NR2C2 signaling. Exp Ther Med 2023; 26:474. [PMID: 37664670 PMCID: PMC10469576 DOI: 10.3892/etm.2023.12173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 07/31/2023] [Indexed: 09/05/2023] Open
Abstract
Cancer stem cells (CSCs) are major drivers of metastasis, drug resistance and recurrence in numerous cancers. However, critical factors that can modulate CSC stemness have not been clearly identified. Nuclear receptor subfamily 2 group E member 3 (nr2e3) expression has been previously reported to be positively associated with drug sensitivity and favorable clinical outcomes in patients with estrogen receptor (ER)+ breast cancer. This suggests that nr2e3 expression may be inversely associated with CSC stemness in this type of tumor cells. The present study aimed to investigate the regulatory roles of NR2E3 in the stem-like properties of ER+ breast cancer cells and to identify the underlying mechanisms. Bioinformatics analysis was performed using the data derived from the Cancer Genome Atlas database. Nr2e3-specific shRNA and nuclear receptor subfamily 2 group C member 2 (nr2c2) overexpressed plasmids were constructed to silence and enhance the expression of nr2e3 and nr2c2, respectively. Transwell and wound healing experiments were conducted to evaluate the migration and invasion ability of MCF7 cells, while colony formation tests were used to evaluate the clonality. Flow cytometry was used to detect the percentage of CD44+CD24-/low cells. Reverse transcription-quantitative PCR and western blotting were performed to detect expression at the mRNA and protein levels. The results showed that compared with normal breast tissues and MCF10A cells, the expression of nr2e3 was increased in ER+ breast tumor tissues and cell lines. Nr2e3 silencing promoted the migration, invasion and colony-forming ability of the ER+ MCF7 cells. It also increased the expression of epithelial-mesenchymal transition markers and stem cell-related transcription factors, in addition to the percentage of CD44+CD24-/low cells. The expression of nr2e3 and nr2c2 was found to be positively correlated. Nr2e3 knockdown decreased the mRNA and protein expression levels of nr2c2, whereas nr2c2 overexpression reversed the elevated CD44+CD24-/low cell ratio and the increased migratory activity caused by nr2e3 silencing. The results of the present study suggest that NR2E3 may serve an important role in modulating the stem-like properties of ER+ breast cancer cells, where NR2E3/NR2C2 signaling may be a therapeutic target in ER+ breast cancer.
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Affiliation(s)
- Shanglun Xie
- School of Life Sciences, Anhui Province Key Laboratory of Translational Cancer Research, Bengbu Medical College, Bengbu, Anhui 233030, P.R. China
| | - Yaru Hu
- Department of Ophthalmology, Fuyang People's Hospital, Fuyang, Anhui 236000, P.R. China
| | - Jiacheng Jin
- School of Life Sciences, Anhui Province Key Laboratory of Translational Cancer Research, Bengbu Medical College, Bengbu, Anhui 233030, P.R. China
| | - Lingzhi Fu
- Department of Ophthalmology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui 233099, P.R. China
| | - Cong Zhang
- School of Life Sciences, Anhui Province Key Laboratory of Translational Cancer Research, Bengbu Medical College, Bengbu, Anhui 233030, P.R. China
| | - Qing Yang
- Department of Ophthalmology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui 233099, P.R. China
| | - Yaxin Niu
- Department of Ophthalmology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui 233099, P.R. China
| | - Zhiyong Sheng
- School of Life Sciences, Anhui Province Key Laboratory of Translational Cancer Research, Bengbu Medical College, Bengbu, Anhui 233030, P.R. China
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Yu X, Zhou Z, Tang S, Zhang K, Peng X, Zhou P, Zhang M, Shen L, Yang L. MDK induces temozolomide resistance in glioblastoma by promoting cancer stem-like properties. Am J Cancer Res 2022; 12:4825-4839. [PMID: 36381313 PMCID: PMC9641408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Accepted: 08/15/2022] [Indexed: 06/16/2023] Open
Abstract
Glioblastoma (GBM) is the most frequently observed and aggressive type of high-grade malignant glioma. Temozolomide (TMZ) is the primary agent for GBM treatment. However, TMZ resistance remains a major challenge. In this study, we report that MDK is overexpressed in GBM, which leads to enhanced proliferation, apoptosis inhibition, increased invasion and TMZ resistance in GBM cells. It was also determined that MDK could significantly improve the stem-like properties of GBM cells. Mechanistically, MDK enhanced p-JNK through Notch1 and subsequently increased the expression of stemness markers, such as CD133 and Nanog, thereby promoting TMZ resistance. Finally, xenograft experiments and clinical sample analysis also demonstrated that MDK knockdown could significantly inhibit tumor growth in vivo, and the expression of MDK was positively correlated with Notch1, p-JNK and CD133. This study revealed that MDK induces TMZ resistance by improving the stem-like properties of GBM by upregulating the Notch1/p-JNK signaling pathway, which provides a possible target for therapeutic intervention of GBM, especially in TMZ-resistant GBM with high MDK expression.
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Affiliation(s)
- Xuehui Yu
- Department of Oncology, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South UniversityChangsha, Hunan, China
- Cancer Research Institute, School of Basic Medicine Science, Central South UniversityChangsha, Hunan, China
| | - Zhuan Zhou
- Department of Oncology, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South UniversityChangsha, Hunan, China
- Cancer Research Institute, School of Basic Medicine Science, Central South UniversityChangsha, Hunan, China
| | - Siyuan Tang
- Department of Oncology, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South UniversityChangsha, Hunan, China
| | - Kun Zhang
- Department of Oncology, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South UniversityChangsha, Hunan, China
| | - Xingzhi Peng
- Department of Oncology, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South UniversityChangsha, Hunan, China
- Cancer Research Institute, School of Basic Medicine Science, Central South UniversityChangsha, Hunan, China
| | - Peijun Zhou
- Department of Oncology, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South UniversityChangsha, Hunan, China
- Cancer Research Institute, School of Basic Medicine Science, Central South UniversityChangsha, Hunan, China
| | - Mingyu Zhang
- Department of Neurosurgery, Xiangya Hospital, Central South UniversityChangsha, Hunan, China
| | - Liangfang Shen
- Department of Oncology, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South UniversityChangsha, Hunan, China
| | - Lifang Yang
- Department of Oncology, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South UniversityChangsha, Hunan, China
- Cancer Research Institute, School of Basic Medicine Science, Central South UniversityChangsha, Hunan, China
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Li W, Yang X, Shi C, Zhou Z. Hsa_circ_002178 Promotes the Growth and Migration of Breast Cancer Cells and Maintains Cancer Stem-like Cell Properties Through Regulating miR-1258/KDM7A Axis. Cell Transplant 2021; 29:963689720960174. [PMID: 32951449 PMCID: PMC7784609 DOI: 10.1177/0963689720960174] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Breast cancer (BrCa) is the most common malignancy in women. Accumulating evidence demonstrated that abnormal circRNA expression is associated with the occurrence and progression of tumors. We analyzed the GSE101123 data and found that the expression of hsa_circ_002178 (circ_002178) was significantly increased in BrCa tissues. However, the role and possible underlying mechanisms of circ_002178 in BrCa still remain unrevealed. In this investigation, the expression levels of circ_002178 in cancer tissues or BrCa cells were significantly upregulated compared with those in paracancer tissues or normal cells. High expression of circ_002178 was correlated with the low survival rate, clinical tumor size, lymph node metastasis, and tumor, nodes, and metastases grade. After microsphere culture, the expression of circ_002178 in SUM149PT and MDA-MB-231 cells was significantly increased. Further investigation exhibited that overexpression of circ_002178 contributed to the formation of microspheres, the elevated protein levels of stemness marker, and the increased activity of ALDH1 in SUM149PT cells. Besides, the overexpression of circ_002178 also significantly promoted the growth, invasion, and migration of BrCa cells. Correspondingly, the knockdown of circ_002178 showed the opposite result in MDA-MB-231 cells. Hsa_circ_002178 was further proved to downregulate the level of miR-1258 and reduce the inhibitory effect of miR-1258 on KDM7A, thus regulating the stem-like characteristics of BrCa cells and promoting the growth and migration of BrCa cells. Taken together, targeting the circ_002178/miR-1258/KDM7A axis may be a prospective strategy for the diagnosis and therapies of BrCa in the future.
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Affiliation(s)
- Wangyong Li
- Department of General Surgery, 117908The First People's Hospital of Wenling, Taizhou City, Zhejiang Province, P. R. China
| | - Xiaoyan Yang
- Department of Rehabilitation, 117908The First People's Hospital of Wenling, Taizhou City, Zhejiang Province, P. R. China
| | - Chengfei Shi
- Department of General Surgery, 117908The First People's Hospital of Wenling, Taizhou City, Zhejiang Province, P. R. China
| | - Zhengbo Zhou
- Department of Breast Surgery, 518873Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan City, Shandong Province, P. R. China
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Zhou H, Hu X, Li N, Li G, Sun X, Ge F, Jiang J, Yao J, Huang D, Yang L. Loganetin and 5-fluorouracil synergistically inhibit the carcinogenesis of gastric cancer cells via down-regulation of the Wnt/β-catenin pathway. J Cell Mol Med 2020; 24:13715-13726. [PMID: 33098378 PMCID: PMC7754039 DOI: 10.1111/jcmm.15932] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 09/01/2020] [Accepted: 09/11/2020] [Indexed: 12/17/2022] Open
Abstract
Although most gastrointestinal tumours are sensitive to 5-fluorouracil (5FU), drug resistance is commonly occurred after 5FU therapy in gastric cancer (GC). Loganetin is the primary active compound in Cornus officinali. However, the synergetic effects of loganetin and 5FU on GC remain unknown. Here, we investigated the synergetic effects and the underlying mechanism of loganetin and 5FU on proliferation, stem-like properties, migration, and invasion of GC both in vitro and in vivo. We found that loganetin alone inhibited the proliferation, stem-like properties, migration and invasion of GC cells in vitro. Importantly, the loganetin remarkably enhanced the anti-cancer effect of 5FU on GC cells and the Wnt/β-catenin pathway might be involved in this process. Animal experiments further confirmed the synergistic effects of 5FU and loganetin on inhibiting cell growth and metastasis of GC. These results suggested that loganetin could synergistically increase the effect of 5FU against GC, which sheds light on effective combinational drug strategies for GC treatment.
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Affiliation(s)
- Huaixiang Zhou
- Department of Medical Oncology, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, China
| | - Xiaoge Hu
- Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, China
| | - Na Li
- Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, China
| | - Guangyan Li
- State Key Laboratory of Genetics Manufacture Technology of Chinese Traditional Medicine, Lunan Pharmaceutical Group Co., Ltd, Linyi, China
| | - Xiaotian Sun
- Department of Internal Medicine, Clinic of August First Film Studio, Beijing, China
| | - Feimin Ge
- Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, China
| | - Jiahong Jiang
- Department of Medical Oncology, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, China.,Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, China
| | - Jingchun Yao
- State Key Laboratory of Genetics Manufacture Technology of Chinese Traditional Medicine, Lunan Pharmaceutical Group Co., Ltd, Linyi, China
| | - Dongsheng Huang
- Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, China
| | - Liu Yang
- Department of Medical Oncology, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, China.,Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, China
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Tian Y, Tian Y, Tu Y, Zhang G, Zeng X, Lin J, Ai M, Mao Z, Zheng R, Yuan Y. microRNA-124 inhibits stem-like properties and enhances radiosensitivity in nasopharyngeal carcinoma cells via direct repression of expression of JAMA. J Cell Mol Med 2020; 24:9533-9544. [PMID: 32681617 PMCID: PMC7520313 DOI: 10.1111/jcmm.15177] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 01/15/2020] [Accepted: 03/06/2020] [Indexed: 01/30/2023] Open
Abstract
Cancer stem cells (CSCs) are a source of tumour recurrence in patients with nasopharyngeal carcinoma (NPC); however, the function of microRNA‐124 (miR‐124) in NPC CSCs has not been clearly defined. In this study, we investigated the role of miR‐124 in NPC CSCs. qRT‐PCR was performed to measure miR‐124 expression in NPC tissues and cell lines and the effects of miR‐124 on stem‐like properties and radiosensitivity of NPC cells measured. Luciferase reporter assays and rescue experiments were used to investigate the interaction of miR‐124 with the 3′UTR of junctional adhesion molecule A (JAMA). Finally, we examined the effects of miR‐124 in an animal model and clinical samples. Down‐regulation of miR‐124 was detected in cancer tissues and was inversely associated with tumour stage and lymph node metastasis. Overexpression of miR‐124 inhibited stemness properties and enhanced radiosensitivity of NPC cells in vitro and in vivo via targeting JAMA. Up‐regulation of miR‐124 was correlated with superior overall survival of patients with NPC. Our study demonstrates that miR‐124 can inhibit stem‐like properties and enhance radiosensitivity by directly targeting JAMA in NPC. These findings provide novel insights into the molecular mechanisms underlying therapy failure in NPC.
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Affiliation(s)
- Yunhong Tian
- State Key Laboratory of Respiratory Disease, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, China
| | - Yunming Tian
- Department of Radiation Oncology, Hui Zhou Municipal Central Hospital, Huizhou, China
| | - Yinuo Tu
- State Key Laboratory of Respiratory Disease, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, China
| | - Guoqian Zhang
- State Key Laboratory of Respiratory Disease, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, China
| | - Xing Zeng
- State Key Laboratory of Respiratory Disease, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, China
| | - Jie Lin
- State Key Laboratory of Respiratory Disease, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, China
| | - Meiling Ai
- State Key Laboratory of Respiratory Disease, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, China
| | - Zixu Mao
- Department of Pharmacology and Chemical Biology, School of Medicine, Emory University, Atlanta, GA, USA
| | - Ronghui Zheng
- State Key Laboratory of Respiratory Disease, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, China
| | - Yawei Yuan
- State Key Laboratory of Respiratory Disease, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, China
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Gao Y, Wang F, Zhang L, Kang M, Zhu L, Xu L, Liang W, Zhang W. LINC00311 promotes cancer stem-like properties by targeting miR-330-5p/TLR4 pathway in human papillary thyroid cancer. Cancer Med 2020; 9:1515-1528. [PMID: 31894666 PMCID: PMC7013059 DOI: 10.1002/cam4.2815] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 11/17/2019] [Accepted: 12/17/2019] [Indexed: 12/21/2022] Open
Abstract
Growing evidence has suggested that long noncoding RNAs (lncRNAs) play an essential role in the progression of papillary thyroid cancer (PTC). LncRNA LINC00311 was found to be able to regulate many cellular process in several diseases. However, the function and regulatory mechanism of LINC00311 remains unclear in PTC. In the present study, the results showed that the expression of LINC00311 was upregulated in PTC tissues and cells. Furthermore, knockdown of LINC00311 dramatically suppressed spheroid formation, proliferation, migration, and invasion in PTC cells in vitro. Mechanistic investigations revealed that LINC00311 was negatively correlated with the expression of miR‐330‐5p, meanwhile, TLR4 was a direct target of miR‐330‐5p. In addition, rescue assays further determined that LINC00311 contributed to the progression of PTC through regulating TLR4 expression. Taken together, these findings indicated that LINC00311 could promote cancer stem‐like properties by targeting miR‐330‐5p/TLR4 pathway in PTC.
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Affiliation(s)
- Yu Gao
- Department of Radiotherapy, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Fan Wang
- Department of Radiotherapy, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Li Zhang
- Department of Radiotherapy, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Mei Kang
- Department of Radiotherapy, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Liyang Zhu
- Department of Radiotherapy, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Lei Xu
- Department of Radiotherapy, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Wei Liang
- Department of Radiotherapy, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Wei Zhang
- Department of Endocrinology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
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Yu A, Wang Y, Bian Y, Chen L, Guo J, Shen W, Chen D, Liu S, Sun X. IL-1β promotes the nuclear translocaiton of S100A4 protein in gastric cancer cells MGC803 and the cell's stem-like properties through PI3K pathway. J Cell Biochem 2018; 119:8163-8173. [PMID: 29932233 DOI: 10.1002/jcb.26813] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 02/23/2018] [Indexed: 12/16/2022]
Abstract
It has been shown that nuclear expression of S100A4 is significantly correlated with increased metastasis and reduced survival in patients with gastric cancer and many other cancers. However, the factors which could influence the nuclear contents of S100A4 in cancer cells are not clear. It has also been reported that Interleukin-1β (IL-1β) promotes the nuclear translocation of S100A4 in chondrocytes. Previous studies have shown that IL-1β promotes the stemness of colon cancer cells, and S100A4 is also involved in maintaining cancer-initiating cells in head and neck cancers. We speculate that IL-1β might promote the nuclear translocation of S100A4 protein in MGC803 gastric cancer cells and therefore enhance their stem-like properties. The results from Western-blot and qRT-PCR analysis showed that IL-1β increased the nuclear and total cellular content of S100A4 protein and S100A4 mRNA level in MGC803 cells. LY294002, a pharmacological inhibitor of Phosphoinositide 3-kinase (PI3K) reversed the above effects. Functional studies indicated that IL-1β promoted the colony-forming and spheroid-forming capabilities of the cells and the expression of SOX2 and NANOG gene. PI3K or S100A4 inhibition reversed the IL-1β-mediated increase in colony and spheroid-forming capabilities of the cells. LY294002 also reversed the elevated SOX2 and NANOG expression induced by IL-1β. Our study demonstrated that IL-1β promote the nuclear translocation of S100A4 protein in gastric cancer cells MGC803, which are PI3K dependent, suggesting the existence of IL-1β-PI3K-S100A4 pathway for the first time. The study also showed that IL-1β promoted stem-like properties of the cells through the new pathway.
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Affiliation(s)
- Aiwen Yu
- Department of Medical Genetics, China Medical University, Shenyang, Liaoning, China.,Department of Rehabilitation, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yu Wang
- Department of Medical Genetics, China Medical University, Shenyang, Liaoning, China
| | - Yue Bian
- Department of Medical Genetics, China Medical University, Shenyang, Liaoning, China
| | - Lisha Chen
- Department of Medical Genetics, China Medical University, Shenyang, Liaoning, China
| | - Junfu Guo
- Department of Medical Genetics, China Medical University, Shenyang, Liaoning, China
| | - Wei Shen
- Department of Medical Genetics, China Medical University, Shenyang, Liaoning, China
| | - Danqi Chen
- Department of Medical Genetics, China Medical University, Shenyang, Liaoning, China
| | - Shanshan Liu
- Department of Medical Genetics, China Medical University, Shenyang, Liaoning, China
| | - Xiuju Sun
- Department of Medical Genetics, China Medical University, Shenyang, Liaoning, China
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Huang J, Zhou L, Chen H, Wu C, Duo Z, Zhang Y. EZH2 is overexpressed in laryngeal squamous cell carcinoma and enhances the stem-like properties of AMC-HN-8 cells. Oncol Lett 2016; 12:837-846. [PMID: 27446358 PMCID: PMC4950628 DOI: 10.3892/ol.2016.4704] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Accepted: 05/03/2016] [Indexed: 01/12/2023] Open
Abstract
The enhancer of zeste 2 polycomb repressive complex 2 subunit (EZH2) histone methyltransferase is the catalytic subunit of polycomb repressive complex 2 (PRC2), which is important for epigenetic regulation. EZH2 is highly expressed in various types of tumors, and its high-level expression promotes the progression and invasion of certain tumors. However, the expression level of EZH2 and its functions in laryngeal squamous cell carcinomas are unknown. In the present study, the level of EZH2 expression in laryngeal squamous cell carcinomas was evaluated using immunochemical staining and reverse transcription-quantitative polymerase chain reaction. EZH2 was overexpressed in AMC-HN-8 cells with lentiviral transfection. Cell proliferation, apoptosis, cell-cycle, chemotherapy-sensitivity and in vivo tumorigenic assays were performed. The results indicated that EZH2 was highly expressed in laryngeal squamous cell carcinomas. Additionally, EZH2 overexpression promoted proliferation, accelerated cell-cycle progression and enhanced the tumorigenicity in laryngeal squamous cancer cells. More importantly, EZH2 enhanced the chemotherapy resistance of these cells. Overall, the results indicated that EZH2 promotes the progression of laryngeal squamous cell cancer and could be a potential chemotherapeutic target for the treatment of such cancer.
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Affiliation(s)
- Jiameng Huang
- Department of Otolaryngology-Head and Neck Surgery, Affiliated Eye, Ear, Nose and Throat Hospital of Fudan University, Shanghai 200031, P.R. China
| | - Liang Zhou
- Department of Otolaryngology-Head and Neck Surgery, Affiliated Eye, Ear, Nose and Throat Hospital of Fudan University, Shanghai 200031, P.R. China
| | - Hui Chen
- Department of Otolaryngology-Head and Neck Surgery, Affiliated Eye, Ear, Nose and Throat Hospital of Fudan University, Shanghai 200031, P.R. China
| | - Chunping Wu
- Department of Otolaryngology-Head and Neck Surgery, Affiliated Eye, Ear, Nose and Throat Hospital of Fudan University, Shanghai 200031, P.R. China
| | - Zhang Duo
- Department of Otolaryngology-Head and Neck Surgery, Affiliated Eye, Ear, Nose and Throat Hospital of Fudan University, Shanghai 200031, P.R. China
| | - Yanping Zhang
- Research Center, Affiliated Eye, Ear, Nose and Throat Hospital of Fudan University, Shanghai 200031, P.R. China
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Chen Z, Che Q, He X, Wang F, Wang H, Zhu M, Sun J, Wan X. Stem cell protein Piwil1 endowed endometrial cancer cells with stem-like properties via inducing epithelial-mesenchymal transition. BMC Cancer 2015; 15:811. [PMID: 26506848 PMCID: PMC4624602 DOI: 10.1186/s12885-015-1794-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 10/15/2015] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Stem cell protein Piwil1 functions as an oncogene in various tumor types. However, the exact function and mechanism of Piwil1 in endometrial cancer remains unclear. METHODS The expression of Piwil1 and its relationships with clinicopathological factors were investigated using immunohistochemistry. Up- or down-regulation of Piwil1 were achieved by stable or transient transfection with plasmids or short hairpin RNA (shRNA). Effects of Piwil1 on cancer cells viability, invasion and migration were evaluated by MTT, plate colony formation, transwell assay and nude mouse tumor xenograft assay. The stem-like properties of endometrial cancer cells was detected by spheroid formation assay. Effects of Piwil1 on expression levels of target genes were detected by qRT-PCR, western blotting and Immunofluorescence. RESULTS Compared with atypical hyperplasia and normal tissues, Piwil1 was much higher in endometrial carcinoma tissues. We found that Piwil1 expression was significantly correlated with FIGO stage, lymphovascular space involvement, lymph node metastasis and level of myometrial invasion. Overexpression of Piwil1 functioned to maintain stem-like characteristics, including enhancing tumor cell viability, migration, invasion and sphere-forming activity. Conversely, Piwil1 knockdown inhibited cell viability, migration, invasion, sphere-forming activity in vitro and tumor formation in xenograft model in vivo. Furthermore, study of the expression of epithelial and mesenchymal markers showed that Piwil1 was responsible for an EMT-like phenotype associated with an increase in mesenchymal markers and suppression of E-cadherin. Moreover, Piwil1 augmented expression levels of CD44 and ALDH1 expression, two known endometrial CSC markers, as well as other stemness-associated genes. CONCLUSIONS Our results suggested that stem cell protein Piwil1 play important roles in regulating EMT and the acquisition of stem-like properties of endometrial cancer cells. Therefore, it indicated that Piwil1 may represent a promising target for developing a novel treatment strategy for endometrial cancer.
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Affiliation(s)
- Zheng Chen
- Department of Obstetrics and Gynecology, Shanghai First People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai, China.
| | - Qi Che
- Department of Obstetrics and Gynecology, Shanghai First People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai, China.
| | - Xiaoying He
- Department of Obstetrics and Gynecology, International Peace Maternity and Child Health Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Fangyuan Wang
- Department of Obstetrics and Gynecology, Shanghai First People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai, China.
| | - Huihui Wang
- Department of Obstetrics and Gynecology, Shanghai First People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai, China.
| | - Minjiao Zhu
- Department of Obstetrics and Gynecology, Shanghai First People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai, China.
| | - Jing Sun
- Department of Obstetrics and Gynecology, Shanghai First Maternity and Infant Hospital, Tong Ji University School of Medicine, No. 536, Changle Road, Shanghai, 200080, China.
| | - Xiaoping Wan
- Department of Obstetrics and Gynecology, Shanghai First Maternity and Infant Hospital, Tong Ji University School of Medicine, No. 536, Changle Road, Shanghai, 200080, China.
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