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Lei Y, Shen HF, Li QW, Yang S, Xie HT, Li XF, Chen ML, Xia JW, Wang SC, Dai GQ, Zhou Y, Li YC, Huang SH, He DH, Zhou ZH, Cong JG, Lin XL, Lin TY, Wu AB, Xiao D, Xiao SJ, Zhang XK, Jia JS. Hairy gene homolog increases nasopharyngeal carcinoma cell stemness by upregulating Bmi-1. Aging (Albany NY) 2023; 15:204742. [PMID: 37219449 DOI: 10.18632/aging.204742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 05/09/2023] [Indexed: 05/24/2023]
Abstract
B-cell-specific Moloney murine leukemia virus integration site 1 (Bmi-1) is overexpressed in various cancer types. We found that Bmi-1 mRNA levels were elevated in nasopharyngeal carcinoma (NPC) cell lines. In immunohistochemical analyses, high Bmi-1 levels were observed in not only 5 of 38 non-cancerous nasopharyngeal squamous epithelial biopsies, but also in 66 of 98 NPC specimens (67.3%). High Bmi-1 levels were detected more frequently in T3-T4, N2-N3 and stage III-IV NPC biopsies than in T1-T2, N0-N1 and stage I-II NPC samples, indicating that Bmi-1 is upregulated in advanced NPC. In 5-8F and SUNE1 NPC cells, stable depletion of Bmi-1 using lentiviral RNA interference greatly suppressed cell proliferation, induced G1-phase cell cycle arrest, reduced cell stemness and suppressed cell migration and invasion. Likewise, knocking down Bmi-1 inhibited NPC cell growth in nude mice. Both chromatin immunoprecipitation and Western blotting assays demonstrated that Hairy gene homolog (HRY) upregulated Bmi-1 by binding to its promoter, thereby increasing the stemness of NPC cells. Immunohistochemistry and quantitative real-time PCR analyses revealed that HRY expression correlated positively with Bmi-1 expression in a cohort of NPC biopsies. These findings suggested that HRY promotes NPC cell stemness by upregulating Bmi-1, and that silencing Bmi-1 can suppress NPC progression.
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Affiliation(s)
- Ye Lei
- School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
- Laboratory Animal Center, Southern Medical University, Guangzhou 510515, China
- Guangzhou Southern Medical Laboratory Animal Sci and Tech Co. Ltd., Guangzhou 510515, China
| | - Hong-Fen Shen
- School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Qi-Wen Li
- School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Sheng Yang
- School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Hong-Ting Xie
- School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou 510515, China
| | - Xu-Feng Li
- School of Basic Medical Sciences, Guangxi Medical University, Nanning 530000, China
| | - Mei-Ling Chen
- School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou 510515, China
| | - Jia-Wei Xia
- The Third People’s Hospital of Kunming (The Sixth Affiliated Hospital of Dali University), Kunming 650041, China
| | - Sheng-Chun Wang
- Department of Pathology, School of Basic Medicine, Guangdong Medical University, Dongguan 523808, China
| | - Guan-Qi Dai
- School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Ying Zhou
- School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Ying-Chun Li
- School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Shi-Hao Huang
- School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Dan-Hua He
- School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Zhi-Hao Zhou
- School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Jin-Ge Cong
- School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
- Laboratory Animal Center, Southern Medical University, Guangzhou 510515, China
- Guangzhou Southern Medical Laboratory Animal Sci and Tech Co. Ltd., Guangzhou 510515, China
| | - Xiao-Lin Lin
- Cancer Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510315, China
| | - Tao-Yan Lin
- Department of Pharmacy, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Ai-Bing Wu
- Central People’s Hospital of Zhanjiang, Zhanjiang 524000, China
| | - Dong Xiao
- School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
- Laboratory Animal Center, Southern Medical University, Guangzhou 510515, China
- Guangzhou Southern Medical Laboratory Animal Sci and Tech Co. Ltd., Guangzhou 510515, China
- National Demonstration Center for Experimental Education of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Sheng-Jun Xiao
- Department of Pathology, The Second Affiliated Hospital, Guilin Medical University, Guilin 541199, China
| | - Xin-Ke Zhang
- Department of Pathology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Jun-Shuang Jia
- School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
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Xiao Q, Zhao XY, Jiang RC, Chen XH, Zhu X, Chen KF, Chen SY, Zhang XL, Qin Y, Liu YH, Luo JD. Increased expression of Sonic hedgehog restores diabetic endothelial progenitor cells and improves cardiac repair after acute myocardial infarction in diabetic mice. Int J Mol Med 2019; 44:1091-1105. [PMID: 31524224 PMCID: PMC6657988 DOI: 10.3892/ijmm.2019.4277] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Accepted: 07/03/2019] [Indexed: 12/19/2022] Open
Abstract
Damaged endothelial progenitor cells (EPCs) are associated with poor prognosis in diabetic myocardial infarction (DMI). Our previous studies revealed that an impaired Sonic hedgehog (Shh) pathway contributes to insufficient function in diabetic EPCs; however, the roles of the Shh pathway in diabetic EPC apoptosis under basal and hypoxic/ischemic conditions remain unknown. Therefore, the present study investigated whether Shh revitalized diabetic EPCs and consequently improved the deteriorative status of DMI. For this purpose, streptozotocin injection was used in male C57/BL6 mice to induce type-1 diabetes, and diabetic EPCs were isolated from the bone marrow. Apoptosis, cell function, and protein expression were investigated in EPCs in vitro. Mouse hearts were injected with adenovirus Shh-modified diabetic EPCs (DM-EPCShh) or control DM-EPCNull immediately after coronary artery ligation in vivo. Cardiac function, capillary numbers, fibrosis, and cell apoptosis were then detected. First, the in vitro results demonstrated that the apoptosis of diabetic EPCs was reduced following treatment with Shh protein for 24 h, under normal or hypoxic conditions. BMI1 proto-oncogene (Bmi1), an antiapoptotic protein found in several cells, was reduced in diabetic EPCs under normal or hypoxic conditions, but was upregulated after Shh protein stimulation. When Bmi1-siRNA was administered, the antiapoptotic effect of Shh protein was significantly reversed. In addition, p53, a Bmi1-targeted gene, was demonstrated to mediate the antiapoptotic effect of the Shh/Bmi1 pathway in diabetic EPCs. The Shh/Bmi1/p53 axis also enhanced the diabetic EPC function. In vivo, Shh-modified diabetic EPCs exhibited increased EPC retention and decreased apoptosis at 3 days post-DMI. At 14 days post-DMI, these cells presented enhanced capillary density, reduced myocardial fibrosis and improved cardiac function. In conclusion, the present results demonstrated that the Shh pathway restored diabetic EPCs through the Shh/Bmi1/p53 axis, suppressed myocardial apoptosis and improved myocardial angiogenesis, thus reducing cardiac fibrosis and finally restoring myocardial repair and cardiac function in DMI. Thus, the Shh pathway may serve as a potential target for autologous cell therapy in diabetic myocardial ischemia.
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Affiliation(s)
- Qing Xiao
- Key Laboratory of Molecular Target and Clinical Pharmacology, School of Pharmaceutical Sciences and The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511436, P.R. China
| | - Xiao-Ya Zhao
- Key Laboratory of Molecular Target and Clinical Pharmacology, School of Pharmaceutical Sciences and The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511436, P.R. China
| | - Ru-Chao Jiang
- Department of Pharmacology, Guangzhou Medical University, Guangzhou, Guangdong 511436, P.R. China
| | - Xiu-Hui Chen
- Department of Pharmacology, Guangzhou Medical University, Guangzhou, Guangdong 511436, P.R. China
| | - Xiang Zhu
- Department of Pharmacology, Guangzhou Medical University, Guangzhou, Guangdong 511436, P.R. China
| | - Kai-Feng Chen
- Department of Pharmacology, Guangzhou Medical University, Guangzhou, Guangdong 511436, P.R. China
| | - Sheng-Ying Chen
- Department of Pharmacology, Guangzhou Medical University, Guangzhou, Guangdong 511436, P.R. China
| | - Xiao-Ling Zhang
- Maternal and Children Hospital of Guangdong Province, Guangzhou, Guangdong 510260, P.R. China
| | - Yuan Qin
- Department of Pharmacology, Guangzhou Medical University, Guangzhou, Guangdong 511436, P.R. China
| | - Ying-Hua Liu
- Department of Pharmacology, Guangzhou Medical University, Guangzhou, Guangdong 511436, P.R. China
| | - Jian-Dong Luo
- Department of Pharmacology, Guangzhou Medical University, Guangzhou, Guangdong 511436, P.R. China
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Potential Research Tool of Stem Cells from Human Exfoliated Deciduous Teeth: Lentiviral Bmi-1 Immortalization with EGFP Marker. Stem Cells Int 2019; 2019:3526409. [PMID: 30984268 PMCID: PMC6431526 DOI: 10.1155/2019/3526409] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 12/15/2018] [Accepted: 01/01/2019] [Indexed: 12/20/2022] Open
Abstract
Stem cells from human exfoliated deciduous teeth (SHED) are a favourable source for tissue engineering, for its great proliferative capacity and the ease of collection. However, the transplantation of stem cells and the study of stem cell-based tissue engineering require massive stem cells. After long-term expansion, stem cells face many challenges, including limited lifespan, senescence, and loss of stemness. Therefore, a cell line capable of overcoming those problems should be built. In this study, we generated a Bmi-1-immortalized SHED cell line with an enhanced green fluorescent protein (EGFP) marker (SHED-Bmi1-EGFP) using lentiviral transduction. We compared this cell line with the original SHED for cell morphology under a microscope. The expression of Bmi-1 was detected with Western blot. Replicative lifespan determination and colony-forming efficiency assessment were using to assay proliferation capability. Senescence-associated β-galactosidase assay was performed to assay the senescence level of cells. Moreover, multipotency, karyotype, and tumour formation in nude mice of SHED and SHED-Bmi1-EGFP were also tested. Our results confirmed that Bmi-1 immortalization did not affect the main features of SHED. SHED-Bmi1-EGFP could be passaged for a long time and stably expressed EGFP. SHED-Bmi1-EGFP at a late passage showed low activity of β-galactosidase and similar multilineage differentiation as SHED at an early passage. The immortalized cells had no potential tumourigenicity ability in vivo. Moreover, we provided some suggestions for potential applications of the immortalized SHED cell line with the EGFP marker. Thus, the immortalized cell line we built can be used as a functional tool in the lab for long-term studies of SHED and stem cell-based regeneration.
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Saboor-Maleki S, Rassouli FB, Matin MM, Iranshahi M. Auraptene Attenuates Malignant Properties of Esophageal Stem-Like Cancer Cells. Technol Cancer Res Treat 2016; 16:519-527. [PMID: 27207438 DOI: 10.1177/1533034616650119] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The high incidence of esophageal squamous cell carcinoma has been reported in selected ethnic populations including North of Iran. Low survival rate of esophageal carcinoma is partially due to the presence of stem-like cancer cells with chemotherapy resistance. In the current study, we aimed to determine the effects of auraptene, an interesting dietary coumarin with various biological activities, on malignant properties of stem-like esophageal squamous cell carcinoma, in terms of sensitivity to anticancer drugs and expression of specific markers. To do so, the half maximal inhibitory concentration values of auraptene, cisplatin, paclitaxel, and 5-fluorouracil were determined on esophageal carcinoma cells (KYSE30 cell line). After administrating combinatorial treatments, including nontoxic concentrations of auraptene + cisplatin, paclitaxel, or 5-fluorouracil, sensitivity of cells to chemical drugs and also induced apoptosis were assessed. In addition, quantitative real-time polymerase chain reaction was used to study changes in the expression of tumor suppressor proteins 53 and 21 ( P53 and P21), cluster of differentiation 44 ( CD44), and B cell-specific Moloney murine leukemia virus integration site 1 ( BMI-1) upon treatments. Results of thiazolyl blue assay revealed that auraptene significantly ( P < .05) increased toxicity of cisplatin, paclitaxel, and 5-fluorouracil in KYSE30 cells, specifically 72 hours after treatment. Conducting an apoptosis assay using flow cytometry also confirmed the synergic effects of auraptene. Results of quantitative real-time polymerase chain reaction revealed significant ( P < .05) upregulation of P53 and P21 upon combinatorial treatments and also downregulation of CD44 and BMI-1 after auraptene administration. Current study provided evidence, for the first time, that auraptene attenuates the properties of esophageal stem-like cancer cells through enhancing sensitivity to chemical agents and reducing the expression of CD44 and BMI-1 markers.
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Affiliation(s)
- Saffiyeh Saboor-Maleki
- 1 Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Fatemeh B Rassouli
- 1 Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran.,2 Cell and Molecular Biotechnology Research Group, Institute of Biotechnology, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Maryam M Matin
- 1 Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran.,2 Cell and Molecular Biotechnology Research Group, Institute of Biotechnology, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Mehrdad Iranshahi
- 3 Biotechnology Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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