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Yu HM, Yao XD, Zhang RM, Zhuang HF, Wang PW, Li YZ. Repression of let-7b-5p prevents the development of multifidus muscle dysfunction by promoting vitamin D accumulation via upregulation of electron transfer flavoprotein alpha subunit in a rat model of multifidus muscle injury. J Cell Biochem 2019; 120:7458-7473. [PMID: 30387180 DOI: 10.1002/jcb.28020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Accepted: 10/15/2018] [Indexed: 01/24/2023]
Abstract
Multifidus muscle dysfunction is associated with the multifidus muscle injury (MMI), which ultimately result in the low-back pain. Increasing evidence shows that microRNAs (miRs) may be involved in multifidus muscle dysfunction. In this study, we tested the hypothesis that downregulation of let-7b-5p may inhibit the multifidus muscle dysfunction development and progression. The target prediction program and luciferase activity determination confirmed electron transfer flavoprotein alpha subunit (ETFA) as a direct target gene of let-7b-5p. To study the mechanisms and functions of let-7b-5p in relation to ETFA in MMI progression, we prepared rats with experimental MMI, and a lentivirus-based packaging system was designed to upregulate expressions of let-7b-5p, and downregulate the expression of ETFA. ETFA was identified as a target gene of let-7b-5p. Older age, a longer duration of pain, and higher visual analog scale and Oswestry disability index scores for the patients with chronic low-back pain were linked to a more severe degree of degenerative muscle atrophy and fatty infiltration. Increased expression of let-7b-5p and decreased expression of ETFA and vitamin D receptor (VDR) were positively correlated with multifidus muscle dysfunction. Downregulated let-7b-5p could inhibit infiltration of collagen fibers, reverse the ultrastructural changes of multifidus muscle, and induce the VDR expression, thereby repair the MMI. The results provided a potential basis for let-7b-5p that could support targeted intervention in multifidus muscle dysfunction. Collectively, this study confirmed that downregulation of let-7b-5p has a potential inhibitory effect on the development of the function of the musculus myocytes by upregulating ETFA.
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Affiliation(s)
- Hai-Ming Yu
- Department of Orthopaedics, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
| | - Xue-Dong Yao
- Department of Orthopaedics, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
| | - Rong-Mou Zhang
- Department of Orthopaedics, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
| | - Hua-Feng Zhuang
- Department of Orthopaedics, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
| | - Pei-Wen Wang
- Department of Orthopaedics, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
| | - Yi-Zhong Li
- Department of Orthopaedics, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
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202
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Wu S, Han M, Zhang C. Overexpression of microRNA-186 inhibits angiogenesis in retinoblastoma via the Hedgehog signaling pathway by targeting ATAD2. J Cell Physiol 2019; 234:19059-19072. [PMID: 30993715 DOI: 10.1002/jcp.28545] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 02/27/2019] [Accepted: 03/06/2019] [Indexed: 12/13/2022]
Abstract
Retinoblastoma (RB) represents an aggressive malignancy in the eye during the period of infancy and childhood. We delineated the ability of microRNA-186 (miR-186) to influence viability, invasion, migration, angiogenesis, and apoptosis of RB via the Hedgehog signaling pathway by targeting AAA domain-containing protein 2 (ATAD2). The microarray-based analysis was adopted to identify differentially expressed genes (DEGs) related to RB. Subsequently, RB cells were treated with miR-186 mimic, miR-186 inhibitor, or si-ATAD2. The expression of miR-186, ATAD2, Hedgehog signaling pathway-related genes were evaluated, and the target relationship between miR-186 and ATAD2 was verified. Finally, cell proliferation, invasion, migration, apoptosis, and angiogenesis were assessed. ATAD2 was identified as a DEG and modulated by miR-186. Moreover, we revealed that ATAD2 was highly expressed, whereas miR-186 was lowly expressed, and the Hedgehog signaling pathway was activated in RB. Then, ATAD2 as a putative target of miR-186 was validated using a luciferase assay. miR-186 mimic or siRNA-ATAD2 in RB cells reduced cell viability, invasion, and migration coordinating with elevated apoptosis via impairing the Hedgehog signaling pathway, where repressed angiogenesis was observed. Overexpression of miR-186 attenuates RB via the inactivation of the Hedgehog signaling pathway by downregulating ATAD2.
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Affiliation(s)
- Shuai Wu
- Department of Orbital Disease & Ocular Plastic Surgery, The Second Hospital of Jilin University, Changchun, Jilin, People's Republic of China
| | - Mei Han
- Department of Strabismus & Pediatric Ophthalmology, The Second Hospital of Jilin University, Changchun, Jilin, People's Republic of China
| | - Chao Zhang
- Department of Strabismus & Pediatric Ophthalmology, The Second Hospital of Jilin University, Changchun, Jilin, People's Republic of China
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203
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Sun G, Liu M, Han H. Overexpression of microRNA‐190 inhibits migration, invasion, epithelial‐mesenchymal transition, and angiogenesis through suppression of protein kinase B‐extracellular signal‐regulated kinase signaling pathway via binding to stanniocalicin 2 in breast cancer. J Cell Physiol 2019; 234:17824-17838. [PMID: 30993707 DOI: 10.1002/jcp.28409] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 01/30/2019] [Indexed: 12/11/2022]
Affiliation(s)
- Guiming Sun
- Department of Oncology Liaocheng People's Hospital Liaocheng P.R. China
| | - Meirong Liu
- Department of Oncology Liaocheng People's Hospital Liaocheng P.R. China
| | - Hui Han
- Department of Oncology Liaocheng People's Hospital Liaocheng P.R. China
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204
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MicroRNA-143-5p targeting eEF2 gene mediates intervertebral disc degeneration through the AMPK signaling pathway. Arthritis Res Ther 2019; 21:97. [PMID: 30987676 PMCID: PMC6466769 DOI: 10.1186/s13075-019-1863-5] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 03/11/2019] [Indexed: 11/10/2022] Open
Abstract
Background Intervertebral disc degeneration (IDD) is a major contributor to back, neck, and radicular pain, and the treatment of IDD is costly and relatively ineffective. Dysregulation of microRNAs (miRNAs) has been reported to be involved in IDD. The purpose of our study is to illustrate the potential that miR-143-5p targeting eEF2 gene mediates IDD. Methods Following the establishment of the IDD rat models, expression of miR-143-5p, eEF2, Bcl-2, Bax, AMPK, mTOR, cyclinD, COL2, ACAN, and DCN was detected. The NP cells isolated from degenerative intervertebral disc (IVD) were introduced with a series of mimic, inhibitor, or AICAR to explore the functional role of miR-143-5p in IDD and to characterize the relationship between miR-143-5p and eEF2. Cell viability, cell cycle, apoptosis, and senescence were also evaluated. Results A reduction in eEF2, an increase in miR-143-5p, and activation of the AMPK signaling pathway were observed in degenerative IVD. Moreover, increased senescent NP cells were observed in degenerative IVD. eEF2 was confirmed as a target gene of miR-143-5p. miR-143-5p was found to activate the AMPK signaling pathway. The restoration of miR-143-5p or the activation of AMPK signaling pathway decreased COL2, ACAN, and DCN expression, coupled with the inhibition of NP cell proliferation and differentiation, and promotion of NP apoptosis and senescence. On the contrary, the inhibition of miR-143-5p led to the reversed results. Conclusion The results demonstrated that the inhibition of miR-143-5p may act as a suppressor for the progression of IDD.
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205
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Yang LX, Wu J, Guo ML, Zhang Y, Ma SG. Suppression of long non-coding RNA TNRC6C-AS1 protects against thyroid carcinoma through DNA demethylation of STK4 via the Hippo signalling pathway. Cell Prolif 2019; 52:e12564. [PMID: 30938030 PMCID: PMC6536409 DOI: 10.1111/cpr.12564] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 09/28/2018] [Accepted: 11/02/2018] [Indexed: 01/09/2023] Open
Abstract
Objectives Thyroid carcinoma (TC) represents a malignant neoplasm affecting the thyroid. Current treatment strategies include the removal of part of the thyroid; however, this approach is associated with a significant risk of developing hypothyroidism. In order to adequately understand the expression profiles of TNRC6C‐AS1 and STK4 and their potential functions in TC, an investigation into their involvement with Hippo signalling pathway and the mechanism by which they influence TC apoptosis and autophagy were conducted. Methods A microarray analysis was performed to screen differentially expressed lncRNAs associated with TC. TC cells were employed to evaluate the role of TNRC6C‐AS1 by over‐expression or silencing means. The interaction of TNRC6C‐AS1 with methylation of STK4 promoter was evaluated to elucidate its ability to elicit autophagy, proliferation and apoptosis. Results TNRC6C‐AS1 was up‐regulated while STK4 was down‐regulated, where methylation level was elevated. STK4 was verified as a target gene of TNRC6C‐AS1, which was enriched by methyltransferase. Methyltransferase’s binding to STK4 increased expression of its promoter. Over‐expressed TNRC6C‐AS1 inhibited STK4 by promoting STK4 methylation and reducing the total protein levels of MST1 and LATS1/2. The phosphorylation of YAP1 phosphorylation was decreased, which resulted in the promotion of SW579 cell proliferation and tumorigenicity. Conclusion Based on our observations, we subsequently confirmed the anti‐proliferative, pro‐apoptotic and pro‐autophagy capabilities of TNRC6C‐AS1 through STK4 methylation via the Hippo signalling pathway in TC.
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Affiliation(s)
- Liu-Xue Yang
- Department of Endocrinology and Metabolism, The Second Affiliated Hospital of Guilin Medical University, Guilin, China
| | - Ji Wu
- Department of Thyroid and Breast Surgery, Suqian Hospital Affiliated to Xuzhou Medical University, Suqian, China.,Department of Thyroid and Breast Surgery, Nanjing Drum Tower Hospital, Suqian, China
| | - Man-Li Guo
- Department of Endocrinology and Metabolism, Suqian People's Hospital, Nanjing Drum Tower Hospital, Suqian, China
| | - Yong Zhang
- Department of Endocrinology and Metabolism, Huai'an Hospital Affiliated to Xuzhou Medical College and Huai'an Second People's Hospital, Huai'an, China.,Department of Endocrinology and Metabolism, Suqian First Hospital, Suqian, China
| | - Shao-Gang Ma
- Department of Endocrinology and Metabolism, Suqian First Hospital, Suqian, China.,Department of Endocrinology and Metabolism, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, China
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206
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Lei JJ, Li HQ, Mo ZH, Liu KJ, Zhu LJ, Li CY, Chen WL, Zhang L. Long noncoding RNA CDKN2B‐AS1 interacts with transcription factor BCL11A to regulate progression of cerebral infarction through mediating MAP4K1 transcription. FASEB J 2019; 33:7037-7048. [DOI: 10.1096/fj.201802252r] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Jun-Jie Lei
- Department of NeurologyThe Fifth Affiliated Hospital of Sun Yat-sen UniversityZhuhaiChina
| | - Hui-Qing Li
- Department of NeurologyThe Fifth Affiliated Hospital of Sun Yat-sen UniversityZhuhaiChina
| | - Zhi-Huai Mo
- Department of NeurologyThe Fifth Affiliated Hospital of Sun Yat-sen UniversityZhuhaiChina
| | - Ke-Jia Liu
- Department of NeurologyThe Fifth Affiliated Hospital of Sun Yat-sen UniversityZhuhaiChina
| | - Ling-Juan Zhu
- Department of NeurologyThe Fifth Affiliated Hospital of Sun Yat-sen UniversityZhuhaiChina
| | - Chun-Yi Li
- Department of NeurologyThe Fifth Affiliated Hospital of Sun Yat-sen UniversityZhuhaiChina
| | - Wen-Li Chen
- Department of PharmacologyThe Fifth Affiliated Hospital of Sun Yat-sen UniversityZhuhaiChina
| | - Lei Zhang
- Department of NeurologyThe Fifth Affiliated Hospital of Sun Yat-sen UniversityZhuhaiChina
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207
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Chen YN, Ren CC, Yang L, Nai MM, Xu YM, Zhang F, Liu Y. MicroRNA let‑7d‑5p rescues ovarian cancer cell apoptosis and restores chemosensitivity by regulating the p53 signaling pathway via HMGA1. Int J Oncol 2019; 54:1771-1784. [PMID: 30816441 DOI: 10.3892/ijo.2019.4731] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Accepted: 10/04/2018] [Indexed: 11/06/2022] Open
Abstract
Ovarian cancer (OC) is the gynecological malignancy type with the highest mortality rate in females. The regulatory effect of microRNAs (miRs) on their target genes serves a key role in tumor development. Therefore, in the present study, whether miR let‑7d‑5p targeting high mobility group A1 (HMGA1) regulated biological characteristics and chemosensitivity of OC cells by mediating the p53 signaling pathway was investigated. The let‑7d‑5p level was detected in OC tissues and adjacent normal tissues, followed by detection in OC cell lines SKOV3, A2780, OVCAR‑3 and CaOV3, and human normal ovarian epithelial cell line (IOSE‑80), in order to select the OC cell line for the following experiments. Subsequently, OC cells were treated with the let‑7d‑5p mimic, siHMGA1 and Tenovin‑1. The targeting association between let‑7d‑5p and HMGA1 was then examined, and the OC cell viability, migration, cycle and apoptosis were evaluated. Subsequently, the chemosensitivity of OC cells to cisplatin was verified. Finally, expression levels of let‑7d‑5p, HMGA1, p21, B‑cell lymphoma‑2 (Bcl‑2)‑associated X (Bax), p27, p53 wild‑type (p53wt), p53 mutated (p53mut), proliferating cell nuclear antigen (PCNA), cyclin‑dependent kinase 2 (CDK2), matrix metallopeptidase (MMP)2, MMP9 and Bcl‑2 were determined. As demonstrated in the results, let‑7d‑5p expression was low in OC tissues and had an increased reduction in the OVCAR‑3 cell line. HMGA1 was confirmed as a target of let‑7d‑5p, and its expression was also silenced by let‑7d‑5p. let‑7d‑5p repressed OC cell viability, migration, cell cycle progression and apoptosis, while it promoted the chemosensitivity of OC cells to cisplatin by targeting HMGA1. The expression of let‑7d‑5p, p21, Bax, p27 and p53wt was increased, while that of HMGA1, p53mut, PCNA, CDK2, MMP2, MMP9 and Bcl‑2 was reduced following cell transfection. The results in the present study provided evidence that let‑7d‑5p may suppress proliferation, and facilitate apoptosis and cisplatin chemosensitivity of OC cells by silencing HMGA1 via the p53 signaling pathway.
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Affiliation(s)
- Yan-Nan Chen
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Chen-Chen Ren
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Li Yang
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Man-Man Nai
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Yi-Ming Xu
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Feng Zhang
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Yan Liu
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
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208
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Qu Y, Zhang Y, Wu J, Jie L, Deng J, Zhao D, Yu Q. Retracted
: Downregulated microRNA‐135a ameliorates rheumatoid arthritis by inactivation of the phosphatidylinositol 3‐kinase/AKT signaling pathway via phosphatidylinositol 3‐kinase regulatory subunit 2. J Cell Physiol 2019; 234:17663-17676. [DOI: 10.1002/jcp.28390] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 01/10/2019] [Accepted: 01/16/2019] [Indexed: 12/19/2022]
Affiliation(s)
- Yuan Qu
- Department of Rheumatology and Clinical Immunology Zhujiang Hospital of Southern Medical University Guangzhou China
| | - Yu‐Ping Zhang
- Department of Rheumatology and Clinical Immunology Zhujiang Hospital of Southern Medical University Guangzhou China
| | - Jing Wu
- Department of Rheumatology and Clinical Immunology Zhujiang Hospital of Southern Medical University Guangzhou China
| | - Li‐Gang Jie
- Department of Rheumatology and Clinical Immunology Zhujiang Hospital of Southern Medical University Guangzhou China
| | - Jia‐Xin Deng
- Department of Rheumatology and Clinical Immunology Zhujiang Hospital of Southern Medical University Guangzhou China
| | - Dong‐Bao Zhao
- Department of Rheumatology and Immunology Changhai Hospital, Second Military Medical University Shanghai China
| | - Qing‐Hong Yu
- Department of Rheumatology and Clinical Immunology Zhujiang Hospital of Southern Medical University Guangzhou China
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209
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Song S, Lin S, Liu J, Zhang M, Du Y, Zhang D, Xu W, Wang H. Retracted
: Targeting of SPP1 by microRNA‐340 inhibits gastric cancer cell epithelial–mesenchymal transition through inhibition of the PI3K/AKT signaling pathway. J Cell Physiol 2019; 234:18587-18601. [DOI: 10.1002/jcp.28497] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 02/19/2019] [Accepted: 02/20/2019] [Indexed: 12/17/2022]
Affiliation(s)
- Su‐Zhen Song
- Department of Internal Medicine Shandong University of Traditional Chinese Medicine Jinan Shandong People's Republic of China
| | - Sen Lin
- Department of Digestive Disease The Second Hospital of Shandong University Jinan Shandong People's Republic of China
| | - Jia‐Ning Liu
- Department of Thyroid and Pancreatic Disease The Second Hospital of Shandong University Jinan Shandong People's Republic of China
| | - Ming‐Bao Zhang
- Department of Digestive Disease The Second Hospital of Shandong University Jinan Shandong People's Republic of China
| | - Ya‐Ting Du
- Department of Digestive Disease The Second Hospital of Shandong University Jinan Shandong People's Republic of China
| | - Dong‐Dong Zhang
- Department of Digestive Disease The Second Hospital of Shandong University Jinan Shandong People's Republic of China
| | - Wei‐Hua Xu
- Department of Digestive Disease The Second Hospital of Shandong University Jinan Shandong People's Republic of China
| | - Hong‐Bo Wang
- Department of Digestive Disease The Second Hospital of Shandong University Jinan Shandong People's Republic of China
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210
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Dong Y, Wang J, Du KX, Jia TM, Zhu CL, Zhang Y, Xu FL. MicroRNA-135a participates in the development of astrocytes derived from bacterial meningitis by downregulating HIF-1α. Am J Physiol Cell Physiol 2019; 316:C711-C721. [PMID: 30726113 DOI: 10.1152/ajpcell.00440.2018] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Accumulating evidence has highlighted the potential of microRNAs (miRs) as biomarkers in various human diseases. However, the roles of miRs in bacterial meningitis (BM), a severe infectious condition, still remain unclear. Thus, the present study aimed to investigate the effects of miR-135a on proliferation and apoptosis of astrocytes in BM. Neonatal rats were injected with Streptococcus pneumoniae to establish the BM model. The expression of miR-135a and hypoxia-inducible factor 1α (HIF-1α) in the BM rat models were characterized, followed by determination of their interaction. Using gain- and loss-of-function approaches, the effects of miR-135a on proliferation, apoptosis, and expression of glial fibrillary acidic protein (GFAP), in addition to apoptosis-related factors in astrocytes were examined accordingly. The regulatory effect of HIF-1α was also determined along with the overexpression or knockdown of HIF-1α. The results obtained indicated that miR-135a was poorly expressed, whereas HIF-1α was highly expressed in the BM rat models. In addition, restored expression levels of miR-135a were determined to promote proliferation while inhibiting the apoptosis of astrocytes, along with downregulated Bax and Bad, as well as upregulated Bcl-2, Bcl-XL, and GFAP. As a target gene of miR-135a, HIF-1α expression was determined to be diminished by miR-135a. The upregulation of HIF-1α reversed the miR-135a-induced proliferation of astrocytes. Taken together, the key findings of the current study present evidence suggesting that miR-135a can downregulate HIF-1α and play a contributory role in the development of astrocytes derived from BM, providing a novel theoretical perspective for BM treatment approaches.
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Affiliation(s)
- Yan Dong
- Department of Pediatrics, Third Affiliated Hospital of Zhengzhou University , Zhengzhou , China.,Henan Provincial Key Laboratory of Child Brain Injury , Zhengzhou , China
| | - Jun Wang
- Department of Children Rehabilitation, Third Affiliated Hospital of Zhengzhou University , Zhengzhou , China
| | - Kai-Xian Du
- Department of Pediatrics, Third Affiliated Hospital of Zhengzhou University , Zhengzhou , China
| | - Tian-Ming Jia
- Department of Pediatrics, Third Affiliated Hospital of Zhengzhou University , Zhengzhou , China
| | - Chang-Lian Zhu
- Department of Pediatrics, Third Affiliated Hospital of Zhengzhou University , Zhengzhou , China.,Henan Provincial Key Laboratory of Child Brain Injury , Zhengzhou , China.,Center for Brain Repair and Rehabilitation, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg , Gothenburg , Sweden
| | - Yan Zhang
- Clinical Laboratory, Henan Red Cross Blood Center , Zhengzhou , China
| | - Fa-Lin Xu
- Department of Pediatrics, Third Affiliated Hospital of Zhengzhou University , Zhengzhou , China
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211
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Zhou ZQ, Chen Y, Chai M, Tao R, Lei YH, Jia YQ, Shu J, Ren J, Li G, Wei WX, Han YD, Han Y. Adipose extracellular matrix promotes skin wound healing by inducing the differentiation of adipose‑derived stem cells into fibroblasts. Int J Mol Med 2019; 43:890-900. [PMID: 30535488 PMCID: PMC6317660 DOI: 10.3892/ijmm.2018.4006] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 11/20/2018] [Indexed: 12/25/2022] Open
Abstract
Fibroblasts are the major effector cells of skin wound healing. Adipose‑derived stem cells can differentiate into fibroblasts under certain conditions. In the present study, it was hypothesized that adipose‑derived stem cells (ADSCs) could be induced by the adipose extracellular matrix (ECM) to differentiate into fibroblasts in order to promote skin wound healing. First, flow cytometry was used to detect the ratio of fibroblasts and relative expression of the fibroblast markers cytokeratin 19 (CK19) and vimentin in ADSCs. Then, the effect of the adipose ECM during the differentiation of ADSCs into fibroblasts was investigated by detecting the total amount of collagen fibers and degree of fibrosis, and the proliferation and cell cycle of differentiated fibroblasts, using the MTT assay and flow cytometry analysis respectively. Finally, a mouse skin wound model was established and treated with PBS, ADSC suspension or ECM + ADSCs to compare wound healing rate and expression of collagen I and collagen III by immunohistochemistry. Following induction of ADSCs with the adipose ECM, more fibroblasts were found, expression of CK19 and vimentin increased, and a greater degree of fibrosis occurred, which revealed the positive effect of the adipose ECM on the differentiation of ADSCs into fibroblasts. In addition, the induced fibroblasts had enhanced proliferation activity, with more cells in the S phase and fewer in the G2/M phase. The in vivo experiment indicated that the ECM produced by the ADSCs had a faster wound healing rate and increased expression of collagen I and collagen III compared with mice injected with PBS or ADSCs alone, which verified that ADSCs induced by the adipose ECM had a positive effect on skin wound healing. The present study demonstrated that the adipose ECM in combination with ADSCs may be a novel therapeutic target for the repair of skin injury, due to the ability of the adipose ECM to induce the differentiation of ADSCs into fibroblasts and to facilitate the wound healing process.
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Affiliation(s)
- Zhi-Qiang Zhou
- Department of Plastic and Reconstructive Surgery, General Hospital of Chinese PLA, Beijing 100853
| | - Yi Chen
- Institute of Bioengineering, Academy of Military Medical Research, Academy of Military Science of Chinese PLA, Beijing 100071, P.R. China
| | - Mi Chai
- Department of Plastic and Reconstructive Surgery, General Hospital of Chinese PLA, Beijing 100853
| | - Ran Tao
- Department of Plastic and Reconstructive Surgery, General Hospital of Chinese PLA, Beijing 100853
| | - Yong-Hong Lei
- Department of Plastic and Reconstructive Surgery, General Hospital of Chinese PLA, Beijing 100853
| | - Yi-Qing Jia
- Department of Plastic and Reconstructive Surgery, General Hospital of Chinese PLA, Beijing 100853
| | - Jun Shu
- Department of Plastic and Reconstructive Surgery, General Hospital of Chinese PLA, Beijing 100853
| | - Jing Ren
- Department of Plastic and Reconstructive Surgery, General Hospital of Chinese PLA, Beijing 100853
| | - Guo Li
- Department of Plastic and Reconstructive Surgery, General Hospital of Chinese PLA, Beijing 100853
| | - Wen-Xin Wei
- Department of Plastic and Reconstructive Surgery, General Hospital of Chinese PLA, Beijing 100853
| | - Yu-Di Han
- Department of Plastic and Reconstructive Surgery, General Hospital of Chinese PLA, Beijing 100853
| | - Yan Han
- Department of Plastic and Reconstructive Surgery, General Hospital of Chinese PLA, Beijing 100853
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212
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Efficacy of Biophysical Energies on Healing of Diabetic Skin Wounds in Cell Studies and Animal Experimental Models: A Systematic Review. Int J Mol Sci 2019; 20:ijms20020368. [PMID: 30654555 PMCID: PMC6359711 DOI: 10.3390/ijms20020368] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 01/04/2019] [Accepted: 01/14/2019] [Indexed: 12/22/2022] Open
Abstract
We have systematically assessed published cell studies and animal experimental reports on the efficacy of selected biophysical energies (BPEs) in the treatment of diabetic foot ulcers. These BPEs include electrical stimulation (ES), pulsed electromagnetic field (PEMF), extracorporeal shockwave (ECSW), photo energies and ultrasound (US). Databases searched included CINAHL, MEDLINE and PubMed from 1966 to 2018. Studies reviewed include animal and cell studies on treatment with BPEs compared with sham, control or other BPEs. Information regarding the objective measures of tissue healing and data was extracted. Eighty-two studies were eventually selected for the critical appraisal: five on PEMF, four each on ES and ECSW, sixty-six for photo energies, and three about US. Based on the percentage of original wound size affected by the BPEs, both PEMF and low-level laser therapy (LLL) demonstrated a significant clinical benefit compared to the control or sham treatment, whereas the effect of US did not reveal a significance. Our results indicate potential benefits of selected BPEs in diabetic wound management. However, due to the heterogeneity of the current clinical trials, comprehensive studies using well-designed trials are warranted to confirm the results.
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213
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Liu L, Yang L, Chang H, Chen YN, Zhang F, Feng S, Peng J, Ren CC, Zhang XA. CP‑31398 attenuates endometrial cancer cell invasion, metastasis and resistance to apoptosis by downregulating MDM2 expression. Int J Oncol 2019; 54:942-954. [PMID: 30628640 PMCID: PMC6365028 DOI: 10.3892/ijo.2019.4681] [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: 02/05/2018] [Accepted: 10/26/2018] [Indexed: 12/21/2022] Open
Abstract
Endometrial cancer (EC) is one of the most common malignancies of the female reproductive system, and metastasis is a major cause of mortality. In this study, we aimed to explore the role of CP-31398 in the migration, invasion and apoptosis of EC cells by its regulation of the expression of the murine double minute 2 (MDM2) gene. For this purpose, EC tissues and adjacent normal tissues were collected, and the positive expression rate of MDM2 in these tissues was assessed. Subsequently, the cellular 50% inhibitory concentration (IC50) of CP-31398 was measured. The EC RL95-2 and KLE cell lines had a higher MDM2 expression and were thus selected for use in subsequent experiments. The EC cells were then treated with CP-31398 (2 µg/ml), and were transfected with siRNA against MDM2 or an MDM2 overexpression plasmid in order to examine the effects of CP-31398 and MDM2 on EC cell activities. The expression of p53, p21, Bad, Bax, B-cell lymphoma-2 (Bcl-2), cytochrome c (Cyt-c), caspase-3, Cox-2, matrix metalloproteinase (MMP)-2 and MMP-9 was measured to further confirm the effects of CP-31398 on cell migration, invasion and apoptosis. Our results indicated that MDM2 was highly expressed in EC tissues. Notably, EC cell viability decreased with the increasing concentrations of CP-31398. The EC cells treated with CP-31398 or siRNA against MDM2 exhibited an increased apoptosis and a suppressed migration and invasion, corresponding to an increased expression of p53, p21, Bad, Bax, Cyt-c and caspase-3, as well as to a decreased expression of Bcl-2, Cox-2, MMP-2 and MMP-9. Moreover, treatment with CP-31398 and siRNA against MDM2 further enhanced these effects. Taken together, the findings of this study indicate that the CP-31398-mediated downregulation of MDM2 may suppress EC progression via its inhibitory role in EC cell migration, invasion and resistance to apoptosis. Therefore, treatment with CP-31398 may prove to be possible therapeutic strategy for EC.
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Affiliation(s)
- Ling Liu
- Department of Gynecologic Oncology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Li Yang
- Department of Gynecologic Oncology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Hui Chang
- Laboratory of Tumor Precision Medicine, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Yan-Nan Chen
- Department of Gynecologic Oncology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Feng Zhang
- Department of Gynecologic Oncology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Shuo Feng
- Department of Gynecologic Oncology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Juan Peng
- Department of Gynecologic Oncology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Chen-Chen Ren
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Xiao-An Zhang
- Department of Imaging, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
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214
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Gao LM, Zheng Y, Wang P, Zheng L, Zhang WL, Di Y, Chen LL, Yin XB, Tian Q, Shi SS, Xu SF. Tumor-suppressive effects of microRNA-181d-5p on non-small-cell lung cancer through the CDKN3-mediated Akt signaling pathway in vivo and in vitro. Am J Physiol Lung Cell Mol Physiol 2019; 316:L918-L933. [PMID: 30628487 DOI: 10.1152/ajplung.00334.2018] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
The involvement of several microRNAs (miRs) in the initiation and development of tumors through the suppression of the target gene expression has been highlighted. The aberrant expression of miR-181d-5p and cyclin-dependent kinase inhibitor 3 (CDKN3) in non-small-cell lung cancer (NSCLC) was then screened by microarray analysis. In the present study, we performed a series of in vivo and in vitro experiments for the purpose of investigating their roles in NSCLC and the underlying mechanism. There was a high expression of CDKN3, whereas miR-181d-5p was downregulated in NSCLC. Quantitative RT-PCR, Western blot analysis, and dual-luciferase reporter gene assay further identified that CDKN3 could be negatively regulated by miR-181d-5p. Moreover, the upregulation of miR-181d-5p or silencing of CDKN3 could inactivate the Akt signaling pathway. A549 with the lowest miR-181d-5p and H1975 with the highest CDKN3 among the five NSCLC cell lines (H1299, A549, H1975, NCI-H157, and GLC-82) were adopted for in vitro experiments, in which expression of miR-181d-5p and CDKN3 was altered by transfection of miR-181d-5p mimic/inhibitor or siRNA-targeting CDKN3. Afterwards, cell proliferation, apoptosis, invasion, migration, and angiogenesis, as well as epithelial-mesenchymal transition (EMT), were evaluated, and tumorigenicity was assessed. In addition, an elevation in miR-181d-5p or depletion in CDKN3 led to significant reductions in proliferation, invasion, migration, angiogenesis, EMT, and tumorigenicity of NSCLC cells, coupling with increased cell apoptosis. In conclusion, this study highlights the tumor-suppressive effects of miR-181d-5p on NSCLC via Akt signaling pathway inactivation by suppressing CDKN3, thus providing a promising therapeutic strategy for the treatment of NSCLC.
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Affiliation(s)
- Li-Ming Gao
- Department of Oncology, the First Hospital of Qinhuangdao , Qinhuangdao , People's Republic of China
| | - Yue Zheng
- Department of Gastroenterology, the First Hospital of Qinhuangdao , Qinhuangdao , People's Republic of China
| | - Ping Wang
- Department of Respiratory, Chinese PLA General Hospital , Beijing , People's Republic of China
| | - Lei Zheng
- Department of Oncology, the First Hospital of Qinhuangdao , Qinhuangdao , People's Republic of China
| | - Wen-Li Zhang
- Department of Imaging, the First Hospital of Qinhuangdao , Qinhuangdao , People's Republic of China
| | - Ya Di
- Department of Oncology, the First Hospital of Qinhuangdao , Qinhuangdao , People's Republic of China
| | - Lan-Lan Chen
- Department of Oncology, the First Hospital of Qinhuangdao , Qinhuangdao , People's Republic of China
| | - Xiao-Bo Yin
- Department of Respiratory, the First Hospital of Qinhuangdao , Qinhuangdao , People's Republic of China
| | - Qi Tian
- Department of Respiratory, the First Hospital of Qinhuangdao , Qinhuangdao , People's Republic of China
| | - Shan-Shan Shi
- Department of Respiratory, the First Hospital of Qinhuangdao , Qinhuangdao , People's Republic of China
| | - Shu-Feng Xu
- Department of Respiratory, the First Hospital of Qinhuangdao , Qinhuangdao , People's Republic of China
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215
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Liu D, Song L, Liang Q, Hao L, Zhang Z, Han C. Long noncoding RNA LEF1‐AS1 silencing suppresses the initiation and development of prostate cancer by acting as a molecular sponge of miR‐330‐5p via LEF1 repression. J Cell Physiol 2019; 234:12727-12744. [PMID: 30613973 DOI: 10.1002/jcp.27893] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 11/14/2018] [Indexed: 02/06/2023]
Affiliation(s)
- Da‐Chuang Liu
- Department of Urology Xuzhou Central Hospital Xuzhou P. R. China
- Xuzhou Institute of Medical Science Xuzhou P. R. China
| | - Lin‐Lin Song
- Department of Respiratory Xuzhou Central Hospital Xuzhou P. R. China
| | - Qing Liang
- Department of Urology Xuzhou Central Hospital Xuzhou P. R. China
| | - Lin Hao
- Department of Urology Xuzhou Central Hospital Xuzhou P. R. China
| | - Zhi‐Guo Zhang
- Department of Urology Xuzhou Central Hospital Xuzhou P. R. China
| | - Cong‐Hui Han
- Department of Urology Xuzhou Central Hospital Xuzhou P. R. China
- Xuzhou Institute of Medical Science Xuzhou P. R. China
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216
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Wang HB, Wei H, Wang JS, Li L, Chen AY, Li ZG. Down-regulated expression of LINC00518 prevents epithelial cell growth and metastasis in breast cancer through the inhibition of CDX2 methylation and the Wnt signaling pathway. Biochim Biophys Acta Mol Basis Dis 2019; 1865:708-723. [PMID: 30611858 DOI: 10.1016/j.bbadis.2019.01.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 12/07/2018] [Accepted: 01/02/2019] [Indexed: 01/02/2023]
Abstract
Breast cancer (BC)-related mortality is associated with the potential metastatic properties of the primary breast tumors. The following study was conducted with the main focus on the effect of LINC00518 on the growth and metastasis of BC epithelial cells via the Wnt signaling pathway through regulation of the methylation of CDX2 gene. Initially, differentially expressed long intergenic non-protein coding RNAs (lincRNAs) related to BC were screened out in the Cancer Genome Atlas (TCGA) database, after which we detected the LINC00518 expression and localization in BC tissues and cells. Then the CDX2 positive expression and methylation level were identified. The targeting relationship of LINC00518 and CDX2, and binding methyltransferase in the promoter region were examined. BC epithelial cell proliferation, colony formation ability, invasion, migration and apoptosis were further evaluated. The lincRNA expression data related to BC downloaded from the TCGA database revealed that there was a high expression of LINC00518 in BC, and a negative correlation between LINC00518 and CDX2. In addition, LINC00518 promotes CDX2 methylation by recruiting DNA methyltransferase through activating the Wnt signaling pathway. The down-regulation of LINC00518 inhibited proliferation, invasion, migration, and EMT of BC epithelial cells while enhancing apoptosis. The inhibitory effects of LINC00518 down-regulation was reversed by CDX2 down-regulation. In conclusion, our findings revealed that down-regulation of LINC00518 might have the ability to suppress BC progression by up-regulating CDX2 expression through the reduction of methylation and blockade of the Wnt signaling pathway, resulting in the inhibition of proliferation and promotion of apoptosis of BC epithelial cells.
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Affiliation(s)
- Hong-Bin Wang
- Department of Breast Surgery (No. 2 Sickroom), Harbin Medical University Cancer Hospital, Harbin 150081, PR China
| | - Hong Wei
- Department of In-Patient Ultrasound, The 2nd Affiliated Hospital of Harbin Medical University, Harbin 150081, PR China
| | - Jin-Song Wang
- Department of Breast Surgery (No. 2 Sickroom), Harbin Medical University Cancer Hospital, Harbin 150081, PR China
| | - Lin Li
- Department of Breast Surgery (No. 2 Sickroom), Harbin Medical University Cancer Hospital, Harbin 150081, PR China
| | - An-Yue Chen
- Department of Breast Surgery (No. 2 Sickroom), Harbin Medical University Cancer Hospital, Harbin 150081, PR China
| | - Zhi-Gao Li
- Department of Breast Surgery (No. 2 Sickroom), Harbin Medical University Cancer Hospital, Harbin 150081, PR China.
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217
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Zhang S, Jiang H, Xu Z, Jiang Y, She Y, Huang X, Feng S, Chen W, Chen S, Chen Y, Qiu G, Zhong S. The resistance of esophageal cancer cells to paclitaxel can be reduced by the knockdown of long noncoding RNA DDX11-AS1 through TAF1/TOP2A inhibition. Am J Cancer Res 2019; 9:2233-2248. [PMID: 31720085 PMCID: PMC6834486 DOI: pmid/31720085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 08/18/2019] [Indexed: 02/05/2023] Open
Abstract
Esophageal cancer (EC) is one of the most common malignancies in the world. The currently used chemotherapeutic drug for the treatment of EC is paclitaxel (PTX), the efficacy of which is affected by the development of drug resistance. The present study aims to define the role of the long noncoding RNA (lncRNA) DDX11-AS1 in the progression of EC with the involvement of PTX-resistant EC cells. First, EC and adjacent normal tissue samples were collected from 82 patients with EC, after which the expression levels of DDX11-AS1, TOP2A and TAF1 were determined. The results showed that DDX11-AS1, TOP2A and TAF1 were highly expressed in EC tissues, and there was a positive correlation between the expression levels of DDX11-AS1 and TOP2A. A PTX-resistant EC cell line was constructed. Next, we evaluated the effects of DDX11-AS1 and TOP2A on the resistance of EC cells to PTX, and the regulatory relationships between DDX11-AS1, TOP2A and TAF1 were investigated. DDX11-AS1 could promote TOP2A transcription via TAF1, and the knockdown of TOP2A or DDX11-AS1 could increase the sensitivity of EC cells to PTX. The effect of DDX11-AS1 on the growth of PTX-inhibited tumors was confirmed using a tumor formation assay in nude mice. It was verified that knocking down DDX11-AS1 reduced the expression level of TOP2A and inhibited tumor growth. In conclusion, our findings suggest that DDX11-AS1 knockdown results in reduced resistance of EC cells to PTX by inhibiting TOP2A transcription via TAF1. Therefore, DDX11-AS1 knockdown could be a promising therapeutic strategy for EC.
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Affiliation(s)
- Shuyao Zhang
- Department of Pharmacy, Guangzhou Red Cross Hospital Affiliated of Ji-Nan University Medical CollegeGuangzhou 510220, Guangdong Province, P. R. China
- Clinical Pharmacy Research Center, Shantou University Medical CollegeShantou 515031, Guangdong Province, P. R. China
| | - Hong Jiang
- Department of Nursing, Guangzhou Red Cross Hospital Affiliated of Ji-Nan University Medical CollegeGuangzhou 510220, Guangdong Province, P. R. China
| | - Zhe Xu
- Department of Urology, Cancer Hospital of Shantou University Medical CollegeShantou 515031, Guangdong Province, P. R. China
| | - Yi Jiang
- Department of Digestive Oncology, Cancer Hospital of Shantou University Medical CollegeShantou 515031, Guangdong Province, P. R. China
| | - Yuqi She
- Clinical Pharmacy Research Center, Shantou University Medical CollegeShantou 515031, Guangdong Province, P. R. China
| | - Xiaoting Huang
- Clinical Pharmacy Research Center, Shantou University Medical CollegeShantou 515031, Guangdong Province, P. R. China
| | - Shanna Feng
- Clinical Pharmacy Research Center, Shantou University Medical CollegeShantou 515031, Guangdong Province, P. R. China
| | - Wanying Chen
- Clinical Pharmacy Research Center, Shantou University Medical CollegeShantou 515031, Guangdong Province, P. R. China
| | - Shuang Chen
- Clinical Pharmacy Research Center, Shantou University Medical CollegeShantou 515031, Guangdong Province, P. R. China
| | - Yun Chen
- Clinical Pharmacy Research Center, Shantou University Medical CollegeShantou 515031, Guangdong Province, P. R. China
| | - Guodong Qiu
- Clinical Pharmacy Research Center, Shantou University Medical CollegeShantou 515031, Guangdong Province, P. R. China
| | - Shilong Zhong
- Clinical Pharmacy Research Center, Shantou University Medical CollegeShantou 515031, Guangdong Province, P. R. China
- Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical SciencesGuangzhou 510080, Guangdong Province, P. R. China
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218
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Lu S, Xu Q. MicroRNA-23a inhibits melanoma cell proliferation, migration, and invasion in mice through a negative feedback regulation of sdcbp and the MAPK/ERK signaling pathway. IUBMB Life 2018; 71:587-600. [PMID: 30589231 DOI: 10.1002/iub.1979] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 10/23/2018] [Accepted: 11/10/2018] [Indexed: 12/15/2022]
Abstract
Melanoma is the main cause of death associated with skin cancer. Surgical resection and adjuvant therapy are currently effective treatments, but the recurrence rate is very high. The understanding of microRNA (miR) dynamics after surgical resection of melanoma is essential to accurately explain the changes in the recurrence of melanoma. In this study, we hypothesized that microRNA-23a (miR-23a) affects the cell proliferation, migration, and invasion of melanoma with a mechanism related to SDCBP and the MAPK/ERK signaling pathway. To validate this, we performed a series of experiments in cells of melanoma modeled. Initially, positive expression of SDCBP and morphology of normal and melanoma tissues and cells were observed. Expression of miR-23a, SDCBP, and MAPK/ERK signaling pathway-related genes was identified in melanoma tissues. Melanoma cells transfected with mimic or inhibitor of miR-23a or si-SDCBP were detected to validate effect of miR-23a on SDCBP and the MAPK/ERK signaling pathway. MTT assay, scratch test, transwell assay, and flow cytometry were performed to evaluate cell viability, invasion, metastasis, and apoptosis in vitro, respectively. Tumorigenicity assay in nude mice was conducted to test the tumorigenesis of the transfected cells in vivo. High positive expression of SDCBP and abnormal morphology were observed in melanoma tissues and cells. Reduced expression of miR-23a and increased expression of SDCBP and MAPK/ERK signaling pathway-related genes were identified in the melanoma tissues of melanoma mice. Overexpressed miR-23a dampened SDCBP and the MAPK/ERK signaling pathway. The melanoma cells with overexpressed miR-23a presented ascended cell apoptosis and descended cell proliferation, migration, invasion as well as tumor size. Taken together, our study demonstrated that miR-23a could inhibit the development of melanoma in mice through a negative feedback regulation of SDCBP and the MAPK/ERK signaling pathway. © 2018 IUBMB Life, 71(5):587-600, 2019.
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Affiliation(s)
- Shelian Lu
- Department of Neurobiology, Beijing Institute for Brain Disorders, Beijing Center of Neural Regeneration and Repair, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Capital Medical University, Beijing, China
| | - Qunyuan Xu
- Department of Neurobiology, Beijing Institute for Brain Disorders, Beijing Center of Neural Regeneration and Repair, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Capital Medical University, Beijing, China
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219
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Hu ZG, Zheng CW, Su HZ, Zeng YL, Lin CJ, Guo ZY, Zhong FD, Yuan GD, He SQ. MicroRNA-329-mediated PTTG1 downregulation inactivates the MAPK signaling pathway to suppress cell proliferation and tumor growth in cholangiocarcinoma. J Cell Biochem 2018; 120:9964-9978. [PMID: 30582202 DOI: 10.1002/jcb.28279] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Accepted: 11/19/2018] [Indexed: 12/14/2022]
Abstract
Cholangiocarcinoma (CCA) is a severe malignancy usually producing a poor prognosis and high mortality rate. MicroRNAs (miRNAs) have been reported in association with CCA; however, the role miR-329 plays in the CCA condition still remains unclear. Therefore, this study was conducted to explore the underlying mechanism of which miR-329 is influencing the progression of CCA. This work studied the differential analysis of the expression chips of CCA obtained from the Gene Expression Omnibus database. Next, to determine both the expression and role of pituitary tumor transforming gene-1 (PTTG1) in CCA, the miRNAs regulating PTTG1 were predicted. In the CCA cells that had been intervened with miR-329 upregulation or inhibition, along with PTTG1 silencing, expression of miR-329, PTTG1, p-p38/p38, p-ERK5/ERK5, proliferating cell nuclear antigen (PCNA), Cyclin D1, Bcl-2-associated X protein (Bax), B-cell CLL/lymphoma 2 (Bcl-2), and caspase-3 were determined. The effects of both miR-329 and PTTG1 on cell proliferation, cell-cycle distribution, and apoptosis were also assayed. The miR-329 was likely to affect the CCA development through regulation of the PTTG1-mediated mitogen-activated protein kinase (MAPK) signaling pathway. The miR-329 targeted PTTG1, leading to inactivation of the MAPK signaling pathway. Upregulation of miR-329 and silencing of PTTG1 inhibited the CCA cell proliferation, induced cell-cycle arrest, and subsequently promoted apoptosis with elevations in Bax, cleaved caspase-3, and total caspase-3, but showed declines in PCNA, Cyclin D1, and Bcl-2. Moreover, miR-329 was also found to suppress the tumor growth by downregulation of PTTG1. To summarize, miR-329 inhibited the expression of PTTG1 to inactivate the MAPK signaling pathway, thus suppressing the CCA progression, thereby providing a therapeutic basis for the CCA treatment.
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Affiliation(s)
- Zhi-Gao Hu
- Department of General Surgery, Xiangya Hospital, Central South University, Changsha, People's Republic of China.,Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, People's Republic of China
| | - Chao-Wen Zheng
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, People's Republic of China
| | - Hui-Zhao Su
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, People's Republic of China
| | - Yong-Lian Zeng
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, People's Republic of China
| | - Cheng-Jie Lin
- Department of General Surgery, Xiangya Hospital, Central South University, Changsha, People's Republic of China.,Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, People's Republic of China
| | - Zhen-Ya Guo
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, People's Republic of China
| | - Fu-Di Zhong
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, People's Republic of China
| | - Guan-Dou Yuan
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, People's Republic of China
| | - Song-Qing He
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, People's Republic of China
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220
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Lan Y, Li YJ, Li DJ, Li P, Wang JY, Diao YP, Ye GD, Li YF. Long noncoding RNA MEG3 prevents vascular endothelial cell senescence by impairing miR-128-dependent Girdin downregulation. Am J Physiol Cell Physiol 2018; 316:C830-C843. [PMID: 30576236 DOI: 10.1152/ajpcell.00262.2018] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Long noncoding RNAs (lncRNAs) are commonly associated with various biological functions, in which the function of lncRNA maternally expressed gene 3 (MEG3) has been identified in various cancers. Strikingly, an association between MEG3 with microRNAs (miRNAs), mRNAs, and proteins has been reported. This study investigates the role of MEG3 in vascular endothelial cell (VEC) senescence. Expression of Girdin and miR-128 was monitored in the blood vessel samples of young and old mice/healthy volunteers, along with the measurement of human umbilical vein endothelial cells (HUVECs). The relationship between MEG3/Girdin and miR-128 was determined and verified. Loss- and gain-of-function approaches were applied to analyze the regulatory effects of MEG3 on platelet phagocytosis and lipoprotein oxidation of HUVEC membrane. In addition, the effect of MEG3 on HUVEC senescence was evaluated by detection of the reactive oxygen species, telomerase activity, and telomere length. To further analyze the MEG3-mediated regulatory mechanism, miR-128 upregulation and inhibition were introduced into the HUVECs. Downregulated Girdin and upregulated miR-128 were found in the blood vessels of old individuals and old mice, as well as in senescent HUVECs. MEG3 downregulation was found to be capable of inhibiting Girdin but enhancing miR-128 expression. It was also indicated to inhibit platelet phagocytosis and reduce telomerase activity and telomere length, while enhancing lipoprotein oxidation and reactive oxygen species production, which ultimately contributed in preventing and protecting HUEVCs from senescence. These findings provide evidence supporting that MEG3 leads to miR-128 downregulation and Girdin upregulation, which promotes platelet phagocytosis, thus protecting VECs from senescence.
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Affiliation(s)
- Yong Lan
- National Center of Gerontology, Department of Vascular Surgery, Beijing Hospital , Beijing , People's Republic of China
| | - Yong-Jun Li
- National Center of Gerontology, Department of Vascular Surgery, Beijing Hospital , Beijing , People's Republic of China
| | - Da-Jun Li
- National Center of Gerontology, Department of Vascular Surgery, Beijing Hospital , Beijing , People's Republic of China
| | - Peng Li
- National Center of Gerontology, Department of Vascular Surgery, Beijing Hospital , Beijing , People's Republic of China
| | - Ji-Yang Wang
- National Center of Gerontology, Department of Vascular Surgery, Beijing Hospital , Beijing , People's Republic of China
| | - Yong-Peng Diao
- National Center of Gerontology, Department of Vascular Surgery, Beijing Hospital , Beijing , People's Republic of China
| | - Guo-Dong Ye
- National Center of Gerontology, Department of Vascular Surgery, Beijing Hospital , Beijing , People's Republic of China
| | - Yang-Fang Li
- Beijing Neurosurgical Institute, Capital Medical University , Beijing , People's Republic of China
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221
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Zhu ZD, Ye JM, Fu XM, Wang XC, Ye JY, Wu XR, Hua P, Liao YQ, Xuan W, Duan JL, Li WY, Fu H, Xia ZH, Zhang X. DDAH2 alleviates myocardial fibrosis in diabetic cardiomyopathy through activation of the DDAH/ADMA/NOS/NO pathway in rats. Int J Mol Med 2018; 43:749-760. [PMID: 30569164 PMCID: PMC6317674 DOI: 10.3892/ijmm.2018.4034] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Accepted: 11/27/2018] [Indexed: 01/02/2023] Open
Abstract
Diabetic cardiomyopathy (DCM) is a form of idiopathic heart disease, with signs including hypertrophy of myocardial cells, hypertension‑independent fibrosis and coronary artery disease. Considering the involvement of dimethylarginine dimethylaminohydrolase 2 (DDAH2) in diabetes, it was hypothesized that DDAH2 may be beneficial to cardiac function and myocardial fibrosis during the progression of DCM with involvement of the DDAH/asymmetric NG, NGdimethyl‑L‑arginine (ADMA)/nitric oxide synthase (NOS)/nitric oxide (NO) signaling pathway. Following establishment of diabetic rat models, diabetes‑related blood biochemical indices and cardiac function were measured in diabetic rats treated with lentivirus expressing DDAH2, short hairpin RNA against DDAH2, or L‑NNA (inhibitor of NOS) to identify the roles of DDAH2 in DCM. The functional roles of DDAH2 in DCM were further determined through detection of the levels of collagen I, matrix metalloproteinase 2 (MMP2) and tissue inhibitor of metalloproteinase 2 (TIMP2). The H9C2 myocardial cell line was selected for in vitro experiments. The effects of DDAH2 on the migration of myocardial cells under high glucose conditions were also examined. To further investigate the underlying regulatory mechanism of DDAH2 in DCM, the contents of ADMA and NO, and the activities of DDAH and NOS were observed. The DCM model rats treated with DDAH2 exhibited reduced left ventricular end‑diastolic pressure, and decreased blood glucose, total cholesterol, triglyceride, fasting blood glucose, and fasting insulin levels, but exhibited increased left ventricular systolic pressure and maximum rate of left ventricular pressure rise/fall levels in myocardial tissues. Myocardial cells under high glucose conditions treated with DDAH2 showed reductions in collagen I, MMP2 and TIMP2, indicating that DDAH2 reduced cell migration. Decreased levels of ADMA and NO but increased levels of DDAH and NOS were observed following treatment with DDAH2, indicating that the DDAH/ADMA/NOS/NO pathway was activated. These results reveal that the overexpression of DDAH2 attenuates myocardial fibrosis and protects against DCM through activation of the DDAH/ADMA/NOS/NO pathway in DCM rats. These results indicate that DDAH2 is a potential therapeutic candidate for the treatment of DCM.
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Affiliation(s)
- Zhen-Dong Zhu
- Yunnan Research Center for Geriatric Diseases, The First People's Hospital of Yunnan Province, Affiliated Hospital of Kunming Science and Technology University, Kunming, Yunnan 650032, P.R. China
| | - Ji-Ming Ye
- Department of Pharmacy, The First People's Hospital of Yunnan Province, Affiliated Hospital of Kunming Science and Technology University, Kunming, Yunnan 650032, P.R. China
| | - Xue-Mei Fu
- Department of Geriatrics, The First People's Hospital of Yunnan Province, Affiliated Hospital of Kunming Science and Technology University, Kunming, Yunnan 650032, P.R. China
| | - Xue-Chang Wang
- Department of Pharmacy, the Third People's Hospital of Yunnan Province, The Second Affiliated Hospital of Dali University, Kunming, Yunnan 650011, P.R. China
| | - Ji-Yun Ye
- Pathogenic Organisms Department of Experimental Center, School of Basic Medical Sciences, Kunming Medical University, Kunming, Yunnan 650500, P.R. China
| | - Xin-Ran Wu
- Center Laboratory, The Third People's Hospital of Yunnan Province, The Second Affiliated Hospital of Dali University, Kunming, Yunnan 650011, P.R. China
| | - Peng Hua
- Department of Pharmacy, the Third People's Hospital of Yunnan Province, The Second Affiliated Hospital of Dali University, Kunming, Yunnan 650011, P.R. China
| | - Yu-Qiong Liao
- Department of Geriatrics, The First People's Hospital of Yunnan Province, Affiliated Hospital of Kunming Science and Technology University, Kunming, Yunnan 650032, P.R. China
| | - Wei Xuan
- Department of Geriatrics, The First People's Hospital of Yunnan Province, Affiliated Hospital of Kunming Science and Technology University, Kunming, Yunnan 650032, P.R. China
| | - Jin-Lan Duan
- Department of Geriatrics, The First People's Hospital of Yunnan Province, Affiliated Hospital of Kunming Science and Technology University, Kunming, Yunnan 650032, P.R. China
| | - Wei-Yuan Li
- Department of Geriatrics, The First People's Hospital of Yunnan Province, Affiliated Hospital of Kunming Science and Technology University, Kunming, Yunnan 650032, P.R. China
| | - Hui Fu
- Clinic Laboratory, The First People's Hospital of Yunnan Province, Affiliated Hospital of Kunming Science and Technology University, Kunming, Yunnan 650032, P.R. China
| | - Zhong-Hua Xia
- Clinical Medical College of Dali University, Dali, Yunnan 671003, P.R. China
| | - Xuan Zhang
- School of Pharmaceutical Science and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, Yunnan 650500, P.R. China
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Ye CY, Zheng CP, Ying WW, Weng SS. Up-regulation of microRNA-497 inhibits the proliferation, migration and invasion but increases the apoptosis of multiple myeloma cells through the MAPK/ERK signaling pathway by targeting Raf-1. Cell Cycle 2018; 17:2666-2683. [PMID: 30382763 PMCID: PMC6343711 DOI: 10.1080/15384101.2018.1542895] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Multiple myeloma (MM) is a cancer that occurs in plasma cells, which fall under the category of white blood cells that are in charge of antibody production. According to previous studies, microRNA-497 (miR-497) functions as a tumor suppressor in several types of cancer, including gastric cancer and colorectal cancer. Therefore, the present study aims to investigate the effects of miR-497 on cellular function of human MM cells through the mitogen-activated protein kinase/extracellular signal-regulated kinase (MAPK/ERK) signaling pathway by targeting Raf-1. The differentially expressed genes and miRs in MM, and the relationship between the miR and gene were verified. It was found that Raf-1 was a target gene of miR-497. The data obtained from MM tissues showed increased Raf-1 level and decreased miR-497 level. MM cells were treated with mimic, inhibitor and siRNA in order to evaluate the role of miR-497, Raf-1 and MAPK/ERK in MM. The expression pattern of miR-497, Raf-1, ERK1/2, survivin, B-cell lymphoma-2 (Bcl-2) and BCL2-Associated X (Bax) as well as the extent of ERK1/2 phosphorylation were determined. Retored miR-497 and si-Raf-1 resulted in increases in the Bax expression and cell apoptosis and decreases in the expressions of Raf-1, MEK-2, survivin, Bcl-2, along with the extent of ERK1/2 phosphorylation. In addition, the biological function evaluations of MM cells revealed that miR-497 mimic or si-Raf-1 led to suppression in cell proliferation, invasion and migration. In conclusion, our results have demonstrated that miR-497 targets Raf-1 in order to inhibit the progression of MM by blocking the MAPK/ERK signaling pathway.
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Affiliation(s)
- Cheng-Yu Ye
- a Department of Hematologic Oncology , Wenzhou Central Hospital, Dingli Clinical Medical School of Wenzhou Medical University , Wenzhou , P.R. China
| | - Cui-Ping Zheng
- a Department of Hematologic Oncology , Wenzhou Central Hospital, Dingli Clinical Medical School of Wenzhou Medical University , Wenzhou , P.R. China
| | - Wei-Wei Ying
- b Wenzhou Medical University , Wenzhou , P.R. China
| | - Shan-Shan Weng
- a Department of Hematologic Oncology , Wenzhou Central Hospital, Dingli Clinical Medical School of Wenzhou Medical University , Wenzhou , P.R. China
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Dong Y, Han LL, Xu ZX. Suppressed microRNA-96 inhibits iNOS expression and dopaminergic neuron apoptosis through inactivating the MAPK signaling pathway by targeting CACNG5 in mice with Parkinson's disease. Mol Med 2018; 24:61. [PMID: 30486773 PMCID: PMC6263543 DOI: 10.1186/s10020-018-0059-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 11/04/2018] [Indexed: 12/15/2022] Open
Abstract
Background There have been a number of reports implicating the association of microRNAs (miRs) and the MAPK signaling pathway with the dopaminergic neuron, which is involved in the development of Parkinson’s disease (PD). The present study was conducted with aims of exploring the role of miR-96 in the activation of iNOS and apoptosis of dopaminergic neuron through the MAPK signaling pathway in mice with PD. Methods The miR and the differentially expressed gene in PD were screened out and the relationship between them was verified. A mouse model of PD induced by MPTP and was then constructed and treated with miR-96 mimic/inhibitor and CACNG5 overexpression plasmid to extract nigral dopaminergic neuron for the purpose of detecting the effect of miR-96 on PD. The TH and iNOS positive neuronal cells, the apoptotic neuronal cells by TUNEL staining, and expression of miR-96, CACNG5, iNOS, p38MAPK, p-p38MAPK, c-Fos, Bax, and Bcl-2 in substantia nigra dopaminergic neuronal tissues were evaluated. Results The results obtained from the aforementioned procedure were then verified by cell culture of the SH-SY5Y cells, followed by treatment with miR-96 mimic/inhibitor, CACNG5 overexpression plasmid and the inhibitor of the MAPK signaling pathway. CACNG5 was confirmed as a target gene of miR-96. The inhibition of miR-96 resulted in a substantial increase in nigral cells, TH positive cells and expression of CACNG5 and Bcl-2 in nigral dopaminergic neuronal tissues, and a decrease in iNOS positive cells, apoptotic neuronal cells, and expression of iNOS, p38MAPK, p-p38MAPK, c-Fos, and Bax. Conclusion The above results implicated that the downregulation of miR-96 inhibits the activation of iNOS and apoptosis of dopaminergic neuron through the blockade of the MAPK signaling pathway by promoting CACNG5 in mice with PD.
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Affiliation(s)
- Yue Dong
- Department of Neurology , China-Japan Union Hospital, Jilin University, No. 126, Xiantai Street, Erdao District, Changchun, 130012, Jilin Province, People's Republic of China
| | - Li-Li Han
- Department of Neurology, Cangzhou Central Hospital, Cangzhou, 061000, People's Republic of China
| | - Zhong-Xin Xu
- Department of Neurology , China-Japan Union Hospital, Jilin University, No. 126, Xiantai Street, Erdao District, Changchun, 130012, Jilin Province, People's Republic of China.
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Liu HC, Zeng J, Zhang B, Liu XQ, Dai M. Inhibitory effect of MSH6 gene silencing in combination with cisplatin on cell proliferation of human osteosarcoma cell line MG63. J Cell Physiol 2018; 234:9358-9369. [PMID: 30456894 DOI: 10.1002/jcp.27620] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 09/25/2018] [Indexed: 12/23/2022]
Abstract
Osteosarcoma (OS) is one of the most common primary bone malignancies, with the survival rate of patients with OS remaining low. Therefore, we conducted this study to identify the potential role combination of both MSH6 gene silencing and cisplatin (DDP) plays in OS cell proliferation and apoptosis. Microarray-based gene expression profiling was used to identify the differentially expressed genes (DEGs) in patients with OS, as well as microRNAs (miRNAs) that regulate the candidate gene. OS tissues from 67 patients with OS along with normal tissues from 24 amputee patients were collected for detection of the positive expression of mutS homolog 6 (MSH6) protein, mRNA, and protein expressions of c-myc, cyclin D1, l-2, B-cell lymphoma 2 (Bcl-2), Stathmin, proliferating cell nuclear antigen (PCNA), and Bcl-2-associated X (Bax). Moreover, after MSH6 silencing and DDP were treated on the selected human OS cell line MG63 with the highest expression of MSH6, cell viability, cell cycle distribution, and apoptosis were detected. The microarray analysis showed that MSH6 was upregulated in OS chip data. Furthermore, silencing MSH6 combined with DDP reduced expressions of c-myc, cyclin D1, Bcl-2, Stathmin, and PCNA, and elevated Bax expression, whereas inhibiting OS cell viability, impeding cell cycle distribution, and inducing apoptosis. In conclusion, our preliminary results indicated that the combination of MSH6 gene silencing coupled with DDP may have a better effect on the inhibition of OS cell proliferation and promote apoptosis, potentially providing targets for the OS treatment.
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Affiliation(s)
- Hu-Cheng Liu
- Department of Orthopedics, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jin Zeng
- Department of Orthopedics, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Bin Zhang
- Department of Orthopedics, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Xu-Qiang Liu
- Department of Orthopedics, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Min Dai
- Department of Orthopedics, The First Affiliated Hospital of Nanchang University, Nanchang, China
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Zhou WM, Wu GL, Huang J, Li JG, Hao C, He QM, Chen XD, Wang GX, Tu XH. Low expression of PDK1 inhibits renal cell carcinoma cell proliferation, migration, invasion and epithelial mesenchymal transition through inhibition of the PI3K-PDK1-Akt pathway. Cell Signal 2018; 56:1-14. [PMID: 30465826 DOI: 10.1016/j.cellsig.2018.11.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 11/16/2018] [Accepted: 11/19/2018] [Indexed: 11/18/2022]
Abstract
As the most commonly occurring form of primary renal tumor, renal cell carcinoma (RCC) is a malignancy accompanied by a high mortality rate. 3-phosphoinositide-dependent protein kinase 1 (PDK1) has been established as a protein target and generated considerable interest in both the pharmaceutical and academia industry. The aim of the current study was to investigate the effect of si-PDK1 on the RCC cell apoptosis, proliferation, migration, invasion and epithelial mesenchymal transition (EMT) in connection with the PI3K-PDK1-Akt pathway. Microarray analysis from the GEO database was adopted to identify differentially expressed genes (DEGs) related to RCC, after which the positive expression of the PDK1 protein in tissue was determined accordingly. The optimal silencing si-RNA was subsequently selected and RCC cell lines 786-O and A498 were selected and transfected with either a si-PDK1 or activator of the PI3K-PDK1-Akt pathway for grouping purposes. The mRNA and protein expressions of PDK1, the PI3K-PDK1-Akt pathway-, EMT- and apoptosis-related genes were then evaluated. The effect of si-PDK1 on cell proliferation, apoptosis, invasion and migration was then analyzed. Through microarray analysis of GSE6344, GSE53757, GSE14762 and GSE781, PDK1 was examined. PDK1 was determined to be highly expressed in RCC tissues. Si-PDK1 exhibited marked reductions in relation to the mRNA and protein expression of PDK1, PI3K, AKT as well as Vimentin while elevated mRNA and protein expressions of E-cadherin were detected, which ultimately suggested that cell migration, proliferation and invasion had been inhibited coupled with enhanced levels of cell apoptosis. While a notable observation was made highlighting that the PI3K-PDK1-Akt pathway antagonized the effect of PDK1 silencing. Taken together, the key observations of this study provide evidence suggesting that high expressions of PDK1 are found in RCC, while highlighting that silencing PDK1 could inhibit RCC cell proliferation, migration, invasion and EMT by repressing the PI3K-PDK1-Akt pathway.
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Affiliation(s)
- Wei-Min Zhou
- Jiangxi Medical College, Nanchang University, Nanchang 330006, PR China; Department of Urology, Jiangxi Cancer Hospital, Nanchang 330029, PR China
| | - Gao-Liang Wu
- Department of Urology, Jiangxi Cancer Hospital, Nanchang 330029, PR China
| | - Ji Huang
- Department of Urology, Jiangxi Cancer Hospital, Nanchang 330029, PR China
| | - Jin-Gao Li
- Department of Radiotherapy, Jiangxi Cancer Hospital, Nanchang 330029, PR China
| | - Chao Hao
- Department of Urology, Jiangxi Cancer Hospital, Nanchang 330029, PR China
| | - Qiu-Ming He
- Department of Urology, Jiangxi Cancer Hospital, Nanchang 330029, PR China
| | - Xiao-Dan Chen
- Department of Science and Education, Jiangxi Cancer Hospital, Nanchang 330029, PR China
| | - Gong-Xian Wang
- Jiangxi Medical College, Nanchang University, Nanchang 330006, PR China; Department of Urology, The First Affiliated Hospital of Nanchang University, Nanchang 330006, PR China.
| | - Xin-Hua Tu
- Department of Urology, Jiangxi Cancer Hospital, Nanchang 330029, PR China.
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Gao JX, Li Y, Wang SN, Chen XC, Lin LL, Zhang H. Overexpression of microRNA-183 promotes apoptosis of substantia nigra neurons via the inhibition of OSMR in a mouse model of Parkinson's disease. Int J Mol Med 2018; 43:209-220. [PMID: 30431059 PMCID: PMC6257840 DOI: 10.3892/ijmm.2018.3982] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Accepted: 10/24/2018] [Indexed: 12/13/2022] Open
Abstract
The present study aimed to investigate the effect of microRNA-183 (miR-183) on substantia nigra neurons by targeting oncostatin M receptor (OSMR) in a mouse model of Parkinson’s disease (PD). The positive expression rates of OSMR and the apoptosis of substantia nigra neurons were detected by immunohistochemistry and terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick end-labeling, respectively. Substantia nigra neurons in normal and PD mice were cultured in vitro. The association between miR-183 and OSMR was verified using a dual luciferase reporter gene assay. The expression of miR-183 and the phosphoinositide 3-kinase-Akt signaling pathway-associated genes were detected by reverse transcription-quantitative polymerase chain reaction and western blot analysis, respectively. Cell apoptosis was detected by flow cytometry. OSMR is the target gene of miR-183. The number of OSMR-positive cells and the apoptotic rate of substantia nigra neurons were increased in the PD group. Neurons transfected with miR-183 mimic exhibited elevated expression levels of miR-183, B-cell lymphoma 2 (Bcl-2)-associated X protein (Bax) and caspase-9 and increased apoptotic rate, and reduced expression levels of OSMR, Akt, phosphorylated (p-)Akt, glycogen synthase kinase-3 (GSK-3β), p-GSK-3β, Bcl-2, insulin-like growth factor 1 (IGF-1), mammalian target of rapamycin (mTOR) and p-mTOR. The miR-183 inhibitor decreased the expression levels of miR-183, Bax and caspase-9 and the apoptotic rate; however, increased the expression of OSMR, Akt, p-Akt, GSK-3β, p-GSK-3β, Bcl-2, IGF-1, mTOR and p-mTOR. The results of the present study provide evidence that the overexpression of miR-183 promotes the apoptosis of substantia nigra neurons by inhibiting the expression of OSMR.
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Affiliation(s)
- Jin-Xia Gao
- Department of Anesthesiology, The Second Hospital of Dalian Medical University, Dalian, Liaoning 116027, P.R. China
| | - Yu Li
- Department of Neurology, The Second Hospital of Dalian Medical University, Dalian, Liaoning 116027, P.R. China
| | - Sai-Nan Wang
- Department of Neurology, The Second Hospital of Dalian Medical University, Dalian, Liaoning 116027, P.R. China
| | - Xing-Chi Chen
- Department of Neurology, The Second Hospital of Dalian Medical University, Dalian, Liaoning 116027, P.R. China
| | - Lu-Lu Lin
- Department of Neurology, The Second Hospital of Dalian Medical University, Dalian, Liaoning 116027, P.R. China
| | - Hui Zhang
- Department of Neurology, The Second Hospital of Dalian Medical University, Dalian, Liaoning 116027, P.R. China
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Huang YX, Nie XG, Li GD, Fan DS, Song LL, Zhang XL. Downregulation of microRNA‑182 inhibits cell viability, invasion and angiogenesis in retinoblastoma through inhibition of the PI3K/AKT pathway and CADM2 upregulation. Int J Oncol 2018; 53:2615-2626. [PMID: 30320366 DOI: 10.3892/ijo.2018.4587] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 07/02/2018] [Indexed: 11/06/2022] Open
Abstract
Retinoblastoma (RB) is a well‑vascularized tumor dependent on angiogenesis. The present study aimed to explore whether microRNA (miR)‑182 regulates cell viability, invasion and angiogenesis in RB via the phosphatidylinositol‑3‑OH kinase (PI3K)/protein kinase B (AKT) signaling pathway and by targeting cell adhesion molecule 2 (CADM2). The expression levels of miR‑182 and CADM2 were initially detected in RB tissues from patients with RB who underwent ophthalmectomy, and normal retinal tissues collected from other trauma patients who underwent eye enucleation. To determine whether CADM2 was targeted by miR‑182, a dual luciferase reporter assay was conducted. Subsequently, Y79 and WERI‑Rb‑1 RB cells were transfected with a miR‑182 mimic or miR‑182 inhibitor, or small interfering RNA against CADM2, in order to investigate the effects of miR‑182 on viability and invasion, which were detected using MTT and Transwell assays, respectively. In addition, to determine whether the regulatory mechanism underlying the effects of miR‑182 was associated with the PI3K/AKT signaling pathway, the expression levels of associated genes were detected by reverse transcription‑quantitative polymerase chain reaction and western blot analysis. A xenograft tumor model in nude mice was also established, in order to evaluate the effects of miR‑182 on tumor growth and angiogenesis. The results indicated that miR‑182 expression was increased and CADM2 expression was reduced in RB tissues; CADM2 was confirmed to be targeted and negatively regulated by miR‑182. When the expression of miR‑182 was downregulated, cell viability, invasion, tumor volume and angiogenesis were significantly decreased. Furthermore, the expression levels of PI3K/AKT signaling pathway‑associated genes were increased in response to miR‑182 overexpression or CADM2 silencing. Taken together, these results suggested that inhibition of miR‑182 may suppress cell viability, invasion and angiogenesis in RB through inactivation of the PI3K/AKT pathway and CADM2 upregulation. This mechanism may reveal a novel potential therapeutic target.
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Affiliation(s)
- Yan-Xia Huang
- Department of Ophthalmology, Luoyang Central Hospital, Luoyang, Henan 471009, P.R. China
| | - Xin-Gang Nie
- Department of Ophthalmology, Luoyang Central Hospital, Luoyang, Henan 471009, P.R. China
| | - Guang-Da Li
- Department of Ophthalmology, Linyi People's Hospital, Linyi, Shandong 276003, P.R. China
| | - Dong-Sheng Fan
- Department of Ophthalmology, Luoyang Central Hospital, Luoyang, Henan 471009, P.R. China
| | - Li-Li Song
- Department of Ophthalmology, Luoyang Central Hospital, Luoyang, Henan 471009, P.R. China
| | - Xin-Lin Zhang
- Department of Ophthalmology, Luoyang Central Hospital, Luoyang, Henan 471009, P.R. China
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Wu DM, Hong XW, Wen X, Han XR, Wang S, Wang YJ, Shen M, Fan SH, Zhuang J, Zhang ZF, Shan Q, Li MQ, Hu B, Sun CH, Lu J, Zheng YL. MCL1 gene silencing promotes senescence and apoptosis of glioma cells via inhibition of the PI3K/Akt signaling pathway. IUBMB Life 2018; 71:81-92. [PMID: 30296359 DOI: 10.1002/iub.1944] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 07/27/2018] [Accepted: 08/17/2018] [Indexed: 12/13/2022]
Abstract
Glioma is known to be the most prevalent primary brain tumor. In recent years, there has been evidence indicating myeloid cell leukemia-1 (MCL1) plays a role in brain glioblastoma. Therefore, the present study was conducted with aims of exploring the ability of MCL1 silencing to influence glioma cell senescence and apoptosis through the mediation of the phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt) signaling pathway. Glioma and tumor-adjacent tissues were collected in order to detect the presence of higher levels of MCL1 protein expression. Next, the mRNA and protein expression of MCL1, PI3K, Akt, B cell lymphoma 2 (Bcl2), Bcl2-associated X (Bax), B lymphoma Mo-MLV insertion region 1 homolog (Bmi-1), and phosphatase and tensin homolog (PTEN) were determined. Cell counting kit-8 assay was applied to detect cell proliferation, β-galactosidase staining for cell senescence, and flow cytometry for cell cycle entry and apoptosis. Initially, the results revealed higher positive expression rate of MCL1 protein, increased mRNA and protein expression of MCL1, PI3K, Akt, Bmi-1, and Bcl-2 and decreased that of Bax and PTEN in human glioma tissues. The silencing of MCL1 resulted in a decrease in mRNA and protein expression of PI3K, Akt, Bmi-1, and Bcl-2 and an increase in Bax and PTEN expressions in glioma cells. Moreover, silencing of MCL1 also inhibited cell proliferation and cell cycle entry in glioma cells, and promoted glioma cell senescence and apoptosis. In conclusion, the aforementioned results collectively suggested that the silencing of MCL1 promotes senescence and apoptosis in glioma cells through inhibiting the PI3K/Akt signaling pathway. Thus, decreasing the expression of MCL1 might have therapeutic functions in glioma. © 2018 IUBMB Life, 71(1):81-92, 2019.
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Affiliation(s)
- Dong-Mei Wu
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, 221116, China.,College of Health Sciences, Jiangsu Normal University, Xuzhou, 221116, Jiangsu Province, People's Republic of China
| | - Xiao-Wu Hong
- Department of Immunology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Xin Wen
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, 221116, China.,College of Health Sciences, Jiangsu Normal University, Xuzhou, 221116, Jiangsu Province, People's Republic of China
| | - Xin-Rui Han
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, 221116, China.,College of Health Sciences, Jiangsu Normal University, Xuzhou, 221116, Jiangsu Province, People's Republic of China
| | - Shan Wang
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, 221116, China.,College of Health Sciences, Jiangsu Normal University, Xuzhou, 221116, Jiangsu Province, People's Republic of China
| | - Yong-Jian Wang
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, 221116, China.,College of Health Sciences, Jiangsu Normal University, Xuzhou, 221116, Jiangsu Province, People's Republic of China
| | - Min Shen
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, 221116, China.,College of Health Sciences, Jiangsu Normal University, Xuzhou, 221116, Jiangsu Province, People's Republic of China
| | - Shao-Hua Fan
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, 221116, China.,College of Health Sciences, Jiangsu Normal University, Xuzhou, 221116, Jiangsu Province, People's Republic of China
| | - Juan Zhuang
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, 221116, China.,School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, 221008, China.,Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, School of Life Sciences, Huaiyin Normal University, Huaian, 223300, China
| | - Zi-Feng Zhang
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, 221116, China.,College of Health Sciences, Jiangsu Normal University, Xuzhou, 221116, Jiangsu Province, People's Republic of China
| | - Qun Shan
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, 221116, China.,College of Health Sciences, Jiangsu Normal University, Xuzhou, 221116, Jiangsu Province, People's Republic of China
| | - Meng-Qiu Li
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, 221116, China.,College of Health Sciences, Jiangsu Normal University, Xuzhou, 221116, Jiangsu Province, People's Republic of China
| | - Bin Hu
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, 221116, China.,College of Health Sciences, Jiangsu Normal University, Xuzhou, 221116, Jiangsu Province, People's Republic of China
| | - Chun-Hui Sun
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, 221116, China.,College of Health Sciences, Jiangsu Normal University, Xuzhou, 221116, Jiangsu Province, People's Republic of China
| | - Jun Lu
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, 221116, China.,College of Health Sciences, Jiangsu Normal University, Xuzhou, 221116, Jiangsu Province, People's Republic of China
| | - Yuan-Lin Zheng
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, 221116, China.,College of Health Sciences, Jiangsu Normal University, Xuzhou, 221116, Jiangsu Province, People's Republic of China
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Zhao XB, Qin Y, Niu YL, Yang J. RETRACTED: Matrine inhibits hypoxia/reoxygenation-induced apoptosis of cardiac microvascular endothelial cells in rats via the JAK2/STAT3 signaling pathway. Biomed Pharmacother 2018; 106:117-124. [PMID: 29957461 DOI: 10.1016/j.biopha.2018.06.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Revised: 06/01/2018] [Accepted: 06/02/2018] [Indexed: 11/16/2022] Open
Abstract
This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy). This article has been retracted at the request of the Editor-in-Chief. An Expression of Concern for this article was previously published while an investigation was conducted (see related editorial: https://doi.org/10.1016/j.biopha.2022.113812). This retraction notice supersedes the Expression of Concern published earlier. Concerns were raised about the provenance of the flow cytometry data shown in Figure 5A, as detailed here: https://pubpeer.com/publications/46C8B5439C5C617A60494BA4C15479; and here: https://docs.google.com/spreadsheets/d/1r0MyIYpagBc58BRF9c3luWNlCX8VUvUuPyYYXzxWvgY/edit#gid=262337249. Independent analysis also identified additional suspected image duplications between the Bax and Bcl-2 Western blots in Figure 6A. The journal requested the corresponding author comment on these concerns and provide the associated raw data. The authors did not respond to this request and therefore the Editor-in-Chief decided to retract the article.
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Affiliation(s)
- Xue-Bin Zhao
- Emergency Department, Jining NO.1 People's Hospital, Jining 272011, PR China
| | - Yi Qin
- Department of Cardiovascular, Rizhao Central Hospital, Rizhao 276800, PR China
| | - Yu-Ling Niu
- Department of Community Care, First People's Hospital of Jinan, Jinan 250000, PR China
| | - Jun Yang
- Tianmen Vocational College, Te No. 1, Xueyuan Road, Tianmen, Hubei Province 431700, PR China.
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Liu NN, Dong ZL, Han LL. MicroRNA-410 inhibition of the TIMP2-dependent MAPK pathway confers neuroprotection against oxidative stress-induced apoptosis after ischemic stroke in mice. Brain Res Bull 2018; 143:45-57. [PMID: 30240841 DOI: 10.1016/j.brainresbull.2018.09.009] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 09/11/2018] [Accepted: 09/16/2018] [Indexed: 11/29/2022]
Abstract
Ischemic stroke (IS) is an acute cerebral event characterized by a high incidence rate, high disability rate as well as a high mortality. More recently, accumulative literature has provided evidence highlighting the role played by microRNAs (miRs) in the development of neurons. Hence, the aim of the present study was to investigate the neuroprotective role of miR-410 in IS. Microarray-based gene expression profiling of AMI was conducted in order to identify differentially expressed genes (DEGs) and the corresponding miRs regulating these genes. IS models were established to assess neurology on a scoring basis. Superoxide dismutase (SOD), glutathione peroxidase (GSH-Px) activity and malondialdehyde (MDA) were all subsequently assessed. The functional role of miR-410 in IS was determined based on ectopic expression, knockdown and reporter assay experiments in hippocampal neurons. The expressions of microRNA-410, TIMP2, ERK, p38MAPK, JNK were all examined accordingly. The survival rate was assessed by MTT assay, and cell cycle and apoptosis by flow cytometry. After the loss of hippocampal neurons, infarct size as well as oxidative stress injury had been detected, microarray technology revealed that TIMP2 was differentially expressed in IS and that miR-410 regulated TIMP2. Initial observations revealed elevated levels of TIMP2 expression and MDA activity, in addition to evidence obtained indicated that the MAPK pathway had been activated along with decreased SOD, GSH-Px activity and miR-410 expression in IS mice. Ectopic expression of miR-410 was observed to inactivate the MAPK pathway, TIMP2 expression and hippocampal neuron apoptosis, while elevated hippocampal neuron survival rates and cell cycle entry were detected. Furthermore, TIMP2 as a direct target gene of miR-410, was determined to be negatively regulated by miR-410, while the MAPK pathway was found to be inhibited following TIMP2 knockdown. Our results revealed that the overexpression of miR-410 could ameliorate hippocampal neuron loss, reduce infarct size and oxidative stress injury in IS mice. Taken together, the key evidence of the current study elucidated the distinct nature of the inhibitory effect on IS as a result of overexpressed miR-410 whereby the conferral of neuroprotection was observed in oxidative stress-induced apoptosis post IS through the TIMP2-dependent repression of the MAPK pathway in mice.
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Affiliation(s)
- Ning-Ning Liu
- Department of Neurology, Cangzhou Central Hospital, Cangzhou, 061000, PR China.
| | - Zhi-Ling Dong
- Department of Neurology, Cangzhou Central Hospital, Cangzhou, 061000, PR China
| | - Li-Li Han
- Department of Neurology, Cangzhou Central Hospital, Cangzhou, 061000, PR China
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231
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Liu QG, Li YJ, Yao L. Knockdown of AGR2 induces cell apoptosis and reduces chemotherapy resistance of pancreatic cancer cells with the involvement of ERK/AKT axis. Pancreatology 2018; 18:678-688. [PMID: 30055941 DOI: 10.1016/j.pan.2018.07.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Revised: 07/04/2018] [Accepted: 07/06/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND Pancreatic cancer (PC), an aggressive human malignancy, presents with a striking resistance to chemotherapy. Interesting, AGR2 has been found to be upregulated in various cancers and has been found to promote the dissemination of PC cells. Thereby, a series of in-vitro experiments were performed to investigate the relationship between AGR2 and the ERK/AKT axis, and to explore whether it affects PC cells. METHODS Positive expression of AGR2 protein in the PC and paracancerous tissues collected from 138 patients with PC was detected using immunohistochemistry. After treatment with FGF2 (an ERK/AKT axis agonist), siRNA against AGR2 or their combination respectively, cell viability, chemotherapy resistance, radiotherapy resistance, migration, invasion and apoptosis in PC cells were detected using CCK8 assay, MTT assay, clone formation assay, wound healing assay, Transwell assay and flow cytometry, respectively. The expressions of AGR2 and ERK/AKT axis-related genes and proteins in tissues and cells were detected using reverse transcription quantitative polymerase chain reaction and Western blot assay. RESULTS PC tissues exhibited highly-expressed AGR2 and abnormally activated ERK/AKT axis. FGF2 promoted the expression of AGR2, ERK/AKT axis activation, cell viability, chemotherapy resistance, migration and invasion, but decreased cell apoptosis in PC cells. However, knockdown of AGR2 resulted in inhibition of the ERK/AKT axis, reduced PC cell viability, chemotherapy resistance, migration and invasion but increased cell apoptosis in PC cells. CONCLUSION The findings reveal that AGR2 silencing could promote cell apoptosis and inhibit cell migration, invasion and chemotherapy resistance of PC cell with the involvement of the ERK/AKT axis.
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Affiliation(s)
- Qing-Guo Liu
- Department of Gastroenterological Surgery, Tangshan Gongren Hospital, Tangshan, 063000, PR China
| | - Yan-Ju Li
- Department of Gastroenterological Surgery, Tangshan Gongren Hospital, Tangshan, 063000, PR China.
| | - Lan Yao
- Tangshan Central Blood Station, Tangshan, 063000, PR China
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232
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Wang BQ, Yang B, Yang HC, Wang JY, Hu S, Gao YS, Bu XY. MicroRNA-499a decelerates glioma cell proliferation while accelerating apoptosis through the suppression of Notch1 and the MAPK signaling pathway. Brain Res Bull 2018; 142:96-106. [DOI: 10.1016/j.brainresbull.2018.06.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 05/12/2018] [Accepted: 06/10/2018] [Indexed: 12/30/2022]
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233
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Qin L, Yang W, Wang YX, Wang ZJ, Li CC, Li M, Liu JY. RETRACTED: MicroRNA-497 promotes proliferation and inhibits apoptosis of cardiomyocytes through the downregulation of Mfn2 in a mouse model of myocardial ischemia-reperfusion injury. Biomed Pharmacother 2018; 105:103-114. [PMID: 29852387 DOI: 10.1016/j.biopha.2018.04.181] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 04/24/2018] [Accepted: 04/24/2018] [Indexed: 11/29/2022] Open
Abstract
This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/policies/article-withdrawal). This article has been retracted at the request of the Editor-in-Chief. An Expression of Concern for this article was previously published while an investigation was conducted (see related editorial: https://doi.org/10.1016/j.biopha.2022.113812). This retraction notice supersedes the Expression of Concern published earlier. Concern was raised about the reliability of the images shown in Figure 1, and the Western blots in Figures 6C and 8E, which appear to contain similar features to those found in other publications, as detailed here: https://pubpeer.com/publications/5E5DF69C11DAD50FBE63CD4F95990F; and here: https://docs.google.com/spreadsheets/d/1r0MyIYpagBc58BRF9c3luWNlCX8VUvUuPyYYXzxWvgY/edit#gid=262337249. Additional concerns were raised over the provenance of the flow cytometry data in Figure 10C, that appear to contain repeating features. Furthermore, the myocardial infarct images in Figure 5A appear to actually show brain slices. Independent analysis also identified additional suspected image duplications within Figures 3A and 4. The journal requested the corresponding author comment on these concerns and provide the associated raw data. The authors did not respond to this request and therefore the Editor-in-Chief decided to retract the article.
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Affiliation(s)
- Lei Qin
- Department of Cardiovascular Internal Medicine, Kaifeng Central Hospital, Kaifeng, 475000, PR China
| | - Wen Yang
- Department of Cardiovascular Internal Medicine, Kaifeng Central Hospital, Kaifeng, 475000, PR China
| | - Yao-Xin Wang
- Department of Cardiovascular Internal Medicine, Kaifeng Central Hospital, Kaifeng, 475000, PR China
| | - Zhen-Jun Wang
- Department of Cardiovascular Internal Medicine, Kaifeng Central Hospital, Kaifeng, 475000, PR China
| | - Chen-Chen Li
- Department of Cardiovascular Internal Medicine, Kaifeng Central Hospital, Kaifeng, 475000, PR China
| | - Man Li
- Department of Cardiovascular Internal Medicine, Kaifeng Central Hospital, Kaifeng, 475000, PR China
| | - Jie-Yun Liu
- Department of Cardiovascular Internal Medicine, Kaifeng Central Hospital, Kaifeng, 475000, PR China.
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Up-regulation of microRNA-340 promotes osteosarcoma cell apoptosis while suppressing proliferation, migration, and invasion by inactivating the CTNNB1-mediated Notch signaling pathway. Biosci Rep 2018; 38:BSR20171615. [PMID: 29769415 PMCID: PMC6117618 DOI: 10.1042/bsr20171615] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 05/14/2018] [Accepted: 05/15/2018] [Indexed: 01/04/2023] Open
Abstract
Osteosarcoma (OS) is the most common histological form of primary bone cancer. It is most prevalent in teenagers and young adults. The present study aims at exploring the regulatory effect of microRNA-340 (miR-340) on OS cell proliferation, invasion, migration, and apoptosis via regulating the Notch signaling pathway by targeting β-catenin (cadherin-associated protein) 1 (CTNNB1). OS tissues belonging to 45 patients and normal femoral head tissues of 45 amputees were selected. Cells were allocated to different groups. In situ hybridization was performed to determine the positive rate of miR-340 expression while immunohistochemistry was used to determine that of CTNNB1 and B-cell lymphoma 2 (Bcl-2). We used a series of experiments to measure the expressions of related factors and assess rates of cell proliferation, migration, invasion, cycle, and apoptosis respectively. Our results show that miR-340 was expressed a higher level in normal tissue than OS tissue. Expression of Notch, CTNNB1, hairy and enhancer of split 1 (Hes1), Bcl-2, Runt-related transcription factor 2 (Runx2), and osteocalcin increased and that of miR-340, Bcl-2 interacting mediator of cell death (BIM), and Bcl-2 associated protein X (Bax) decreased in OS tissues. U-2OS cell line had the highest miR-340 expression. We also found that the up-regulation of miR-340 had increased expression of miR-340, BIM, and Bax but decreased expression of Notch, CTNNB1, Hes1, Bcl-2, Runx2, and osteocalcin. Up-regulation of miR-340p lead to increased cell apoptosis, suppressed cell proliferation, migration, and invasion. Our study demonstrates that overexpression of miR-340 could suppress OS cell proliferation, migration, and invasion as well as promoting OS cell apoptosis by inactivating the Notch signaling pathway via down-regulating CTNNB1. Functional miR-340 overexpression might be a future therapeutic strategy for OS.
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235
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Wu D, Wen X, Wang Y, Han X, Wang S, Shen M, Fan S, Zhuang J, Zhang Z, Shan Q, Li M, Hu B, Sun C, Lu J, Chen G, Zheng Y. Retracted
: Effect of microRNA‐186 on oxidative stress injury of neuron by targeting interleukin 2 through the janus kinase‐signal transducer and activator of transcription pathway in a rat model of Alzheimer’s disease. J Cell Physiol 2018; 233:9488-9502. [DOI: 10.1002/jcp.26843] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2018] [Accepted: 05/10/2018] [Indexed: 01/05/2023]
Affiliation(s)
- Dong‐Mei Wu
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science Jiangsu Normal University Xuzhou China
- College of Health Sciences Jiangsu Normal University Xuzhou Jiangsu China
| | - Xin Wen
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science Jiangsu Normal University Xuzhou China
- College of Health Sciences Jiangsu Normal University Xuzhou Jiangsu China
| | - Yong‐Jian Wang
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science Jiangsu Normal University Xuzhou China
- College of Health Sciences Jiangsu Normal University Xuzhou Jiangsu China
| | - Xin‐Rui Han
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science Jiangsu Normal University Xuzhou China
- College of Health Sciences Jiangsu Normal University Xuzhou Jiangsu China
| | - Shan Wang
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science Jiangsu Normal University Xuzhou China
- College of Health Sciences Jiangsu Normal University Xuzhou Jiangsu China
| | - Min Shen
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science Jiangsu Normal University Xuzhou China
- College of Health Sciences Jiangsu Normal University Xuzhou Jiangsu China
| | - Shao‐Hua Fan
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science Jiangsu Normal University Xuzhou China
- College of Health Sciences Jiangsu Normal University Xuzhou Jiangsu China
| | - Juan Zhuang
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science Jiangsu Normal University Xuzhou China
- School of Environment Science and Spatial Informatics China University of Mining and Technology Xuzhou China
- Jiangsu Key Laboratory for Eco‐Agricultural Biotechnology Around Hongze Lake, School of Life Sciences Huaiyin Normal University Huaian China
| | - Zi‐Feng Zhang
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science Jiangsu Normal University Xuzhou China
- College of Health Sciences Jiangsu Normal University Xuzhou Jiangsu China
| | - Qun Shan
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science Jiangsu Normal University Xuzhou China
- College of Health Sciences Jiangsu Normal University Xuzhou Jiangsu China
| | - Meng‐Qiu Li
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science Jiangsu Normal University Xuzhou China
- College of Health Sciences Jiangsu Normal University Xuzhou Jiangsu China
| | - Bin Hu
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science Jiangsu Normal University Xuzhou China
- College of Health Sciences Jiangsu Normal University Xuzhou Jiangsu China
| | - Chun‐Hui Sun
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science Jiangsu Normal University Xuzhou China
- College of Health Sciences Jiangsu Normal University Xuzhou Jiangsu China
| | - Jun Lu
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science Jiangsu Normal University Xuzhou China
- College of Health Sciences Jiangsu Normal University Xuzhou Jiangsu China
| | - Gui‐Quan Chen
- State Key Laboratory of Pharmaceutical Biotechnology, Model Animal Research Center Nanjing University Nanjing China
- MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center Nanjing University Nanjing China
| | - Yuan‐Lin Zheng
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science Jiangsu Normal University Xuzhou China
- College of Health Sciences Jiangsu Normal University Xuzhou Jiangsu China
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236
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Liu Y, Zhang Y, Yang Q. Retracted
: Downregulated expression of microRNA‐329 inhibits apoptosis of nigral dopaminergic neurons by regulating CDKN2D expression via the FoxO3a signaling pathway in rats with Parkinson's disease. J Cell Physiol 2018; 233:8617-8629. [DOI: 10.1002/jcp.26608] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 03/22/2018] [Indexed: 01/03/2023]
Affiliation(s)
- Yuan‐Yuan Liu
- Department of Neurologythe First Affiliated Hospital of Jinzhou Medical UniversityJinzhouP.R. China
| | - Yi‐Nan Zhang
- Department of Neurologythe First Affiliated Hospital of Jinzhou Medical UniversityJinzhouP.R. China
| | - Qing‐Shan Yang
- Department of Radiation Oncologythe First Affiliated Hospital of Jinzhou Medical UniversityJinzhouLiaoning ProvinceP.R. China
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237
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Wang YZ, Yang L, Li CF. Protective effect of atorvastatin meditated by HMGCR gene on diabetic rats with atherosclerosis: An in vivo and in vitro study. Biomed Pharmacother 2018; 104:240-251. [PMID: 29775891 DOI: 10.1016/j.biopha.2018.04.179] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 04/24/2018] [Accepted: 04/24/2018] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND Accelerated atherosclerosis in patients suffering from diabetes represents a major cause of morbidity and mortality. The aim of present study was to investigate the protective effects conferred by atorvastatin (AVT) meditated by the HMGCR gene in diabetic rats with atherosclerosis. METHODS Serum triglyceride (TG), total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), very-low-density lipoprotein cholesterol (VLDL-C), fasting blood glucose (FBG) and serum insulin (INS) were all determined by means of in vivo experiments. Following the establishment of the diabetic model of atherosclerosis, the expressions of HMGCR, low density lipoprotein receptor (LDLR), fatty acid synthase (FASN) were detected by reverse transcription quantitative polymerase chain reaction (RT-qPCR) and Western blot analysis in the vitro experiments. Flow cytometry was adopted in order to detect cell cycle and apoptosis. RESULTS The in vivo experiments results indicated that FBG and INS among the diabetic arteriosclerosis rats exhibited markedly higher levels; after injected with AVT and HMGCR, decreased contents of TC, TG, LDL-C and VLDL-C, while increased contents of HDL-C as well as an increased positive rate of HMGCR protein expression were observed. In vitro experiment, the mRNA and protein expression of LDLR were increased and FASN were decreased in cells transfected with HMGCR and AVT; with a greater number of cells arrested at the S phase and less in the G0/G1 phase, as well as data indicating the rate of apoptosis was inhibited after HMGCR and AVT transfection processes. CONCLUSION The key findings of the present study suggested that the protective effect conferred by AVT in diabetic rats with atherosclerosis was associated with the overexpression of the HMGCR gene, thus presenting a novel target for atherosclerosis treatment.
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Affiliation(s)
- Yong-Zhi Wang
- Department of Cardiology, PLA No. 254 Hospital, Tianjin 300142, PR China
| | - Lei Yang
- Department of Cardiology, Laiwu Steel Group Co. Ltd, Laiwu 271100, PR China
| | - Chuan-Fang Li
- Department of Cardiology, Affliated Hospital of Jining Medical University, No. 89, Guhuai Road, Jining 272000, PR China.
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238
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Low-level laser irradiation modifies the effect of hyperglycemia on adhesion molecule levels. Lasers Med Sci 2018; 33:1521-1526. [PMID: 29725945 DOI: 10.1007/s10103-018-2511-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 04/17/2018] [Indexed: 10/17/2022]
Abstract
Endothelium plays a key role in maintaining vascular homeostasis by secreting active factors involved in many biological processes such as hemostasis, angiogenesis, and inflammation. Hyperglycemia in diabetic patients causes dysfunction of endothelial cells. Soluble fractions of adhesion molecules like sE-selectin and vascular cell adhesion molecule (sVCAM) are considered as markers of endothelial damage. The low-level laser therapy (LLLT) effectively supports the conventional treatment of vascular complications in diabetes, for example hard-to-heal wounds in patients with diabetic foot syndrome. The aim of our study was to evaluate the effect of low-energy laser at the wavelength of 635 nm (visible light) and 830 nm (infrared) on the concentration of adhesion molecules: sE-selectin and sVCAM in the supernatant of endothelial cell culture of HUVEC line. Cells were cultured under high-glucose conditions of 30 mM/L. We have found an increase in sE-selectin and sVCAM levels in the supernatant of cells cultured under hyperglycemic conditions. This fact confirms detrimental influence of hyperglycemia on vascular endothelial cell cultures. LLLT can modulate the inflammation process. It leads to a decrease in sE-selectin and sVCAM concentration in the supernatant and an increase in the number of endothelial cells cultured under hyperglycemic conditions. The influence of LLLT is greater at the wavelength of 830 nm.
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239
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Fekrazad R, Sarrafzadeh A, Kalhori KA, Khan I, Arany PR, Giubellino A. Improved Wound Remodeling Correlates with Modulated TGF-beta Expression in Skin Diabetic Wounds Following Combined Red and Infrared Photobiomodulation Treatments. Photochem Photobiol 2018; 94:775-779. [DOI: 10.1111/php.12914] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Accepted: 01/04/2018] [Indexed: 12/29/2022]
Affiliation(s)
- Reza Fekrazad
- Laser Research Center in Medical Sciences; AJA University of Medical Sciences; Tehran Iran
| | - Arash Sarrafzadeh
- Oral and Maxillofacial Department; Shahid Beheshti University of Medical Sciences; Tehran Iran
| | | | - Imran Khan
- National Institutes of Health; Bethesda MD USA
| | - Praveen R. Arany
- National Institutes of Health; Bethesda MD USA
- Oral Biology and Biomedical Engineering; University at Buffalo; Buffalo NY USA
| | - Alessio Giubellino
- National Institutes of Health; Bethesda MD USA
- Department of Laboratory Medicine and Pathology; University of Minnesota; Minneapolis MN USA
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240
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Houreld NN, Ayuk SM, Abrahamse H. Cell Adhesion Molecules are Mediated by Photobiomodulation at 660 nm in Diabetic Wounded Fibroblast Cells. Cells 2018; 7:cells7040030. [PMID: 29659538 PMCID: PMC5946107 DOI: 10.3390/cells7040030] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 04/09/2018] [Accepted: 04/12/2018] [Indexed: 12/13/2022] Open
Abstract
Diabetes affects extracellular matrix (ECM) metabolism, contributing to delayed wound healing and lower limb amputation. Application of light (photobiomodulation, PBM) has been shown to improve wound healing. This study aimed to evaluate the influence of PBM on cell adhesion molecules (CAMs) in diabetic wound healing. Isolated human skin fibroblasts were grouped into a diabetic wounded model. A diode laser at 660 nm with a fluence of 5 J/cm2 was used for irradiation and cells were analysed 48 h post-irradiation. Controls consisted of sham-irradiated (0 J/cm2) cells. Real-time reverse transcription (RT) quantitative polymerase chain reaction (qPCR) was used to determine the expression of CAM-related genes. Ten genes were up-regulated in diabetic wounded cells, while 25 genes were down-regulated. Genes were related to transmembrane molecules, cell–cell adhesion, and cell–matrix adhesion, and also included genes related to other CAM molecules. PBM at 660 nm modulated gene expression of various CAMs contributing to the increased healing seen in clinical practice. There is a need for new therapies to improve diabetic wound healing. The application of PBM alongside other clinical therapies may be very beneficial in treatment.
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Affiliation(s)
- Nicolette N Houreld
- Laser Research Centre, Faculty of Health Sciences, University of Johannesburg, P.O. Box 17011, Doornfontein, Johannesburg 2028, South Africa.
| | - Sandra M Ayuk
- Laser Research Centre, Faculty of Health Sciences, University of Johannesburg, P.O. Box 17011, Doornfontein, Johannesburg 2028, South Africa.
| | - Heidi Abrahamse
- Laser Research Centre, Faculty of Health Sciences, University of Johannesburg, P.O. Box 17011, Doornfontein, Johannesburg 2028, South Africa.
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241
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Zhou Y, Wang ZF, Li W, Hong H, Chen J, Tian Y, Liu ZY. Protective effects of microRNA-330 on amyloid β-protein production, oxidative stress, and mitochondrial dysfunction in Alzheimer's disease by targeting VAV1 via the MAPK signaling pathway. J Cell Biochem 2018; 119:5437-5448. [PMID: 29369410 DOI: 10.1002/jcb.26700] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 01/23/2018] [Indexed: 12/13/2022]
Abstract
This study aims to explore the effect of miR-330 targeting VAV1 on amyloid β-protein (Aβ) production, oxidative stress (OS), and mitochondrial dysfunction in Alzheimer's disease (AD) mice through the MAPK signaling pathway. Putative targeted gene of miR-330 was performed by a miRNA target prediction website and dual-luciferase reporter gene assay. AD mouse model was successfully established. Fourteen C57 mice were randomized into AD and control groups. The positive protein expression rate of VAV1 was measured by immunohistochemistry. Neuron cells were assigned into control, blank, negative control (NC), miR-330 mimics, miR-330 inhibitors, siRNA-VAV1, and miR-330 inhibitors + siRNA-VAV1 groups. Expression of miR-330, VAV1, ERK1, JNK1, P38MAPK, Aβ, COX, and lipoprotein receptor-related protein-1 (LRP-1) were determined using RT-qPCR and Western blotting. Colorimetry was applied to measure the levels of OS parameters of superoxide dismutase (SOD) and malondialdehyde (MDA). Aβ production in brain tissue was detected using ELISA, while that in neuron cell was measured by radioimmunoassay. MiR-330 was down-regulated in neuron cells of AD mice and VAV1 was negatively regulated by miR-330. Compared with the control group, the positive protein expression rate of VAV1 was significantly elevated in the AD group. Overexpression of miR-330 decreased the expression of VAV1, ERK1, JNK1, P38MAPK, and Aβ, but increased the expression of COX and LRP-1. AD mice revealed elevated Aβ production and MDA with decreased SOD level. The result indicates that overexpressed miR-330 targeting VAV1 through the MAPK signaling pathway reduces Aβ production and alleviates OS and mitochondrial dysfunction in AD.
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Affiliation(s)
- Ying Zhou
- Department of Neurology, The First Hospital of Changsha, Changsha, P. R. China
| | - Zhou-Fan Wang
- Department of Neurology, The First Hospital of Changsha, Changsha, P. R. China
| | - Wei Li
- Department of Neurology, The First Hospital of Changsha, Changsha, P. R. China
| | - Hui Hong
- Department of Neurology, The First Hospital of Changsha, Changsha, P. R. China
| | - Juan Chen
- Department of Neurology, The First Hospital of Changsha, Changsha, P. R. China
| | - Yi Tian
- Department of Neurology, The First Hospital of Changsha, Changsha, P. R. China
| | - Zhao-Yun Liu
- Department of Cardiology, Changsha Central Hospital, Changsha, P. R. China
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242
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Li G, Cao X, Li Y, Qiu YY, Li Y, Liu X, Sun X. MicroRNA‐374b inhibits cervical cancer cell proliferation and induces apoptosis through the p38/ERK signaling pathway by binding to JAM‐2. J Cell Physiol 2018; 233:7379-7390. [PMID: 29575013 DOI: 10.1002/jcp.26574] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 02/27/2018] [Indexed: 02/03/2023]
Affiliation(s)
- Guang‐Cai Li
- Medical Insurance Management OfficeLinyi People's HospitalLinyiP.R. China
| | - Xiao‐Yun Cao
- Medical Insurance Management OfficeEconomic and Technological Development Zone People's Hospital of LinyiLinyiP.R. China
| | - Ying‐Ni Li
- Department of Obstetrics and GynecologyEconomic and Technological Development Zone People's Hospital of LinyiLinyiP.R. China
| | - Yu‐ Yan Qiu
- Department of Obstetrics and GynecologyEconomic and Technological Development Zone People's Hospital of LinyiLinyiP.R. China
| | - Ying‐Na Li
- Department of Obstetrics and GynecologyEconomic and Technological Development Zone People's Hospital of LinyiLinyiP.R. China
| | - Xing‐Jie Liu
- Residency Office of Educational DepartmentLinyi People's HospitalLinyiP.R. China
| | - Xiang‐Xiu Sun
- Department of Obstetrics and GynecologyLinyi People's HospitalLinyiP.R. China
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Wu DM, Wang S, Shen M, Wang YJ, Zhang B, Wu ZQ, Lu J, Zheng YL. S100A9 gene silencing inhibits the release of pro-inflammatory cytokines by blocking the IL-17 signalling pathway in mice with acute pancreatitis. J Cell Mol Med 2018; 22:2378-2389. [PMID: 29441717 PMCID: PMC5867138 DOI: 10.1111/jcmm.13532] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 12/09/2017] [Indexed: 12/13/2022] Open
Abstract
The study aimed to investigate whether S100A9 gene silencing mediating the IL‐17 pathway affected the release of pro‐inflammatory cytokines in acute pancreatitis (AP). Kunming mice were assigned to the normal, AP, AP + negative control (NC), AP + shRNA, AP + IgG and AP + anti IL‐17 groups. ELISA was applied to measure expressions of AMY, LDH, CRP, TNF‐α, IL‐6 and IL‐8. The cells were distributed into the control, blank, NC, shRNA1 and shRNA2 groups. MTT assay, flow cytometry, RT‐qPCR and Western blotting were used to evaluate cell proliferation, cell cycle and apoptosis, and expressions of S100A9, TLR4, RAGE, IL‐17, HMGB1 and S100A12 in tissues and cells. Compared with the normal group, the AP group displayed increased expressions of AMY, LDH, CRP, TNFα, IL‐6, IL‐8, S100A9, TLR4, RAGE, IL‐17, HMGB1 and S100A12. The AP + shRNA and AP + anti IL‐17 groups exhibited an opposite trend. The in vivo results: Compare with the control group, the blank, NC, shRNA1 and shRNA2 groups demonstrated increased expressions of S100A9, TLR4, RAGE, IL‐17, HMGB1 and S100A12, as well as cell apoptosis and cells at the G1 phase, with reduced proliferation. Compared with the blank and NC groups, the shRNA1 and shRNA2 groups had declined expressions of S100A9, TLR4, RAGE, IL‐17, HMGB1 and S100A12, as well as cell apoptosis and cells at the G1 phase, with elevated proliferation. The results indicated that S100A9 gene silencing suppressed the release of pro‐inflammatory cytokines through blocking of the IL‐17 pathway in AP.
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Affiliation(s)
- Dong-Mei Wu
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, China.,College of Health Sciences, Jiangsu Normal University, Xuzhou, China
| | - Shan Wang
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, China.,College of Health Sciences, Jiangsu Normal University, Xuzhou, China
| | - Min Shen
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, China.,College of Health Sciences, Jiangsu Normal University, Xuzhou, China
| | - Yong-Jian Wang
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, China.,College of Health Sciences, Jiangsu Normal University, Xuzhou, China
| | - Bo Zhang
- Department of General Surgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Zi-Qi Wu
- Department of General Surgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Jun Lu
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, China.,College of Health Sciences, Jiangsu Normal University, Xuzhou, China
| | - Yuan-Lin Zheng
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, China.,College of Health Sciences, Jiangsu Normal University, Xuzhou, China
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244
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Correlations of EZH2 and SMYD3 gene polymorphisms with breast cancer susceptibility and prognosis. Biosci Rep 2018; 38:BSR20170656. [PMID: 29089464 PMCID: PMC5794497 DOI: 10.1042/bsr20170656] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 10/24/2017] [Accepted: 10/26/2017] [Indexed: 12/19/2022] Open
Abstract
The aim of the present study was to investigate the correlation of enhancer of Zeste homolog 2 (EZH2) and SET and MYND domain containing 3 (SMYD3) gene polymorphisms with breast cancer susceptibility and prognosis. A total of 712 patients with breast cancer and 783 healthy individuals were selected. Normal breast epithelial cells MCF-10A and breast cancer cells MCF-7, MDA-MB-231, T47D, and Bcap-37 were cultured. Polymerase chain reaction (PCR)-restriction fragment length polymorphism method was applied for genotyping. Reverse-transcription quantitative PCR (RT-qPCR) and Western blotting were used to examine EZH2 and SMYD3 expression in breast cancer tissues and cells. The risk factors and prognostic factors for breast cancer were estimated. The C allele of EZH2 rs12670401 (odds ratio (OR) =1.255, 95% confidence interval (95% CI): 1.085-1.452), T allele of EZH2 rs6464926 (OR =1.240, 95% CI: 1.071-1.435), and three alleles of SMYD3 variable number of tandem repeats (VNTRs) (OR =1.305, 95% CI: 1.097-1.552) could increase susceptibility to breast cancer. Combined genotypes of EZH2 rs12670401 (TC + CC) and EZH2 rs6464926 (CT + TT) were associated with breast cancer susceptibility. Breast cancer tissues had higher EZH2 and SMYD3 expression. EZH2 rs12670401, EZH2 rs6464926, age of menarche, and menopausal status were associated with breast cancer susceptibility. Patients with TT genotype of EZH2 rs12670401 or with CC genotype of EZH2 rs6464926 had higher overall survival (OS). EZH2 rs12670401, EZH2 rs6464926, and clinical staging were independent prognostic factors for breast cancer. SMYD3 VNTR polymorphism exhibited no association with susceptibility and prognosis. EZH2 rs12670401 and rs6464926 polymorphisms, EZH2 and SMYD3 expression, clinical staging, lymph node metastasis, human epidermal growth factor receptor-2 (HER2) status, and metastasis may be correlated with breast cancer susceptibility and prognosis.
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Zheng GH, Wen X, Wang YJ, Han XR, Shan Q, Li W, Zhao T, Wu DM, Lu J, Zheng YL. MicroRNA-381-induced down-regulation of CXCR4 promotes the proliferation of renal tubular epithelial cells in rat models of renal ischemia reperfusion injury. J Cell Biochem 2018; 119:3149-3161. [PMID: 29073721 DOI: 10.1002/jcb.26466] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 10/24/2017] [Indexed: 11/06/2022]
Abstract
This study aims to explore whether microRNA-381 (miR-381) mediating CXCR4 affects the renal tubular epithelial cells (RTEC) of renal ischemia reperfusion (I/R) injury. Forty-eight rats were assigned into the I/R (n = 24, successfully established as I/R model) and sham (n = 24) groups. After collecting kidney tissues, immunohistochemistry, and microvascular density (MVD) counting were conducted for CXCR4 positive expression and MVD numbers. RTECs were assigned into the sham, blank, negative control (NC), miR-381 mimics, miR-381 inhibitor, si-CXCR4, and miR-381 inhibitor + si-CXCR4 groups. RT-qPCR and Western blotting were performed for relative expressions in tissues and cells. Cell proliferation and apoptosis were measured by MTT assay and flow cytometry. Results showed that compared with the sham group, positive expression of CXCR4 and MVD number were higher in the I/R group, which exhibited decreased miR-381 and increased expression of CXCR4, stromal cell-derived factor-1 (SDF1), vascular endothelial growth factor (VEGF), hypoxia-inducible factor 1 (HIF-1α) and Tie-2. Dual luciferase reporter gene assay verified that CXCR4 is a target gene of miR-381. MiR-381 expression was lower in the miR-381 inhibitor + si-CXCR4 and miR-381 inhibitor groups and higher in the miR-381 mimics group than the blank and NC groups. Compared with the blank and NC groups, the miR-381 mimics and si-CXCR4 groups exhibited higher cell proliferation but lower cell apoptosis and expression of CXCR4, SDF1, VEGF, HIF-1α, and Tie-2, whereas the miR-381 inhibitor group exhibited the opposite trend. In conclusion, miR-381 may promote RTEC proliferation in rats with renal I/R injury by down-regulating CXCR4.
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Affiliation(s)
- Gui-Hong Zheng
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, P.R. China
| | - Xin Wen
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, P.R. China
| | - Yong-Jian Wang
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, P.R. China
| | - Xin-Rui Han
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, P.R. China
| | - Qun Shan
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, P.R. China
| | - Wang Li
- Department of Nephrology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, P.R. China
| | - Tian Zhao
- Department of Nephrology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, P.R. China
| | - Dong-Mei Wu
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, P.R. China
| | - Jun Lu
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, P.R. China
| | - Yuan-Lin Zheng
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, P.R. China
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Yan XL, Zhang XB, Ao R, Guan L. Effects of shRNA-Mediated Silencing of PKM2 Gene on Aerobic Glycolysis, Cell Migration, Cell Invasion, and Apoptosis in Colorectal Cancer Cells. J Cell Biochem 2017; 118:4792-4803. [PMID: 28543190 DOI: 10.1002/jcb.26148] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Accepted: 05/18/2017] [Indexed: 01/06/2023]
Abstract
This study aims to explore the effects of shRNA-mediated silencing on Pyruvate kinase type M2 (PKM2) gene during aerobic glycolysis in colorectal cancer (CRC) cells. CRC tissues and adjacent normal tissues were obtained from 136 patients diagnosed with qRT-PCR, Western blotting, and immunohistochemistry (IHC) were performed to detect mRNA and protein expressions of PKM2. CRC cells were divided into a blank, vector, and PKM2-shRNA groups. Hexokinase (HK) and PKM2 activity were both determined by glucose-6-phosphate dehydrogenase (G-6-PD) coupled colorimetric assay and enzyme coupling rate method. The extracellular lactate concentration was measured by ultraviolet spectrophotometer and caspase activity was measured using spectrophotometry. The proliferation, cell cycle, apoptosis, invasion, and migration of CRC cells were detected by cell counting kit-8 (CCK-8) assay, flow cytometry, transwell assay, and scratch test. Three groups of nude mice were injected with 0.2 mL single-cell suspension from the blank, vector, and PKM2-shRNA groups, respectively. PKM2 protein content in CRC tissues was higher than that in adjacent normal tissues. Results showed that the PKM2-shRNA group exhibited significantly lower mRNA and protein expressions of PKM2, decreased PKM2 activity, reduced lactate metabolism level, increased cell apoptosis rate, elevated caspase-3 and caspase-9 activity, weakened proliferation, and a reduction in cell invasion and migration ability compared to the vector and blank groups. The optical density (OD) value was lower in the PKM2-shRNA group than in the blank and vector groups. These findings indicate that shRNA-mediated silencing of PKM2 gene promotes apoptosis and inhibits aerobic glycolysis, proliferation, migration, and invasion in CRC cells. J. Cell. Biochem. 118: 4792-4803, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Xiao-Ling Yan
- Department of Pathology, Tianjin Huanhu Hospital, Tianjin 300350, P. R. China
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases, Tianjin 300350, P. R. China
| | - Xue-Bin Zhang
- Department of Pathology, Tianjin Huanhu Hospital, Tianjin 300350, P. R. China
| | - Ran Ao
- Department of Gastroenterology, The First Hospital of China Medical University, Shenyang 110001, P. R. China
| | - Lin Guan
- Department of Gastroenterology, The First Hospital of China Medical University, Shenyang 110001, P. R. China
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Jin PY, Lu HJ, Tang Y, Fan SH, Zhang ZF, Wang Y, Li XN, Wu DM, Lu J, Zheng YL. The effect of DNA-PKcs gene silencing on proliferation, migration, invasion and apoptosis, and in vivo tumorigenicity of human osteosarcoma MG-63 cells. Biomed Pharmacother 2017; 96:1324-1334. [PMID: 29203385 DOI: 10.1016/j.biopha.2017.11.079] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 11/14/2017] [Accepted: 11/14/2017] [Indexed: 12/22/2022] Open
Abstract
The purpose of this study was to explore the role by which the DNA-dependent protein kinase complex catalytic subunit (DNA-PKcs) influences osteosarcoma MG-63 cell apoptosis, proliferation, migration and invasion. Osteosarcoma tissues and adjacent normal tissues were obtained from 57 osteosarcoma patients. Human osteosarcoma MG-63 cells were assigned into designated groups including the blank, siRNA-negative control (NC) and siRNA-DNA-PKcs groups. RT-qPCR and Western blotting methods were employed to evaluate the mRNA and protein expressions of DNA-PKcs. A cell counting kit-8 (CCK-8) assay was performed to assess cell viability. The evaluation of cell migration and invasion were conducted by means of Scratch test and Transwell assay. Flow cytometry with PI and annexin V/PI double staining was applied for the analysis of the cell cycle and apoptosis. Twenty-Four Balb/c nude mice were recruited and randomly divided into the blank, siRNA-NC and siRNA-DNA-PKcs groups. Tumorigenicity of the Balb/c nude mice was conducted to evaluate the rate of tumor formation, as well as for the assessment of tumor size and weight, and confirm the number of lung metastatic nodules in the mice post transfection. Osteosarcoma tissues were found to possess greater expression of DNA-PKcs than that of the adjacent normal tissues. DNA-PKcs expression in osteosarcoma tissues were correlated with the clinical stage and metastasis. Compared with the blank and siRNA-NC groups, proliferation, miration, as well as the invasion abilities of the MG-63 cells increased. Furthermore, an increase in apoptosis and cells at the G1 stage in the MG-63 cells was observed, while there were reductions in the cells detected at the S stage. The mRNA and protein expressions of CyclinD1, PCNA, Bcl-2 decreased while those of Bax increased in the siRNA-DNA-PKcs group. The tumor formation rate, tumor diameter, weight and lung metastatic nodules among the nude mice in the siRNA-DNA-PKcs group were all lower than those in the blank and siRNA-NC groups. The observations and findings of the study suggested that the silencing of DNA-PKcs inhibits the proliferation, migration and invasion, while acting to promote cell apoptosis in MG-63 cells and osteosarcoma growth in nude mice.
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Effects of microRNA-708 on Epithelial-Mesenchymal Transition, Cell Proliferation and Apoptosis in Melanoma Cells by Targeting LEF1 through the Wnt Signaling Pathway. Pathol Oncol Res 2017; 25:377-389. [PMID: 29138985 DOI: 10.1007/s12253-017-0334-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Accepted: 10/18/2017] [Indexed: 12/22/2022]
Abstract
This study was conducted in order to elucidate the role microRNA-708 (miR-708) plays between proliferation, invasion, migration, and epithelial-mesenchymal transition (EMT) involving melanoma cells by targeting using LEF1 through the Wnt signaling pathway. Male Kunming mice were selected and subsequently divided into normal and model groups to take part in this study. Following cell line selection, the B16 cells with the highest miR-708 expression were selected and assigned into the control, blank, negative control (NC), miR-708 mimic, miR-708 inhibitor, siRNA-LEF1, and miR-708 inhibitor + siRNA-LEF1 groups. A Bioinformatics Web service and dual-luciferase reporter assay were conducted in order to determine the relationship between LEF1 and miR-708. The RT-qPCR method was performed in order to detect the miR-708 expression and mRNA expressions of LEF1, β-catenin, Wnt3a, N-cadherin, Bcl-2, Bax, Caspase3, E-cadherin, and western blotting was used in order to detect the protein expressions of these genes. MTT assay, scratch test, Transwell assay, and flow cytometry were all conducted in order to detect the cell proliferation, migration, invasion, and cycle/apoptosis, respectively. LEF1 was verified as the target gene of miR-708. In comparison with the normal group, the model group had reduced expressions of miR-708, Bax, Caspase3, and E-cadherin, while showing elevated expressions of LEF1, β-catenin, Bcl-2, Wnt3a, and N-cadherin. In comparison to the blank and control groups, the miR-708, mimic, and siRNA-LEF1 groups had elevated expressions of Bax, Caspase3, and E-cadherin, while also showing enhanced cell apoptosis. The miR-708, mimic, and siRNA-LEF1 groups also had decreased expressions of LEF1, β-catenin, Bcl-2, Wnt3a, and N-cadherin, and reduced optical density value 48 h and 72 h after transfection. Besides, these two groups showed declined cell migration and invasion, as well as lengthened G0/G1 phase (increased cell number) and shortened S phase (decreased cell number). Our findings demonstrated that an overexpressed miR-708 inhibits the proliferation, invasion, migration, and EMT, but also promotes the apoptosis of melanoma cells by targeting LEF1 through the suppression of the Wnt signaling pathway.
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249
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Zhang ZF, Wang YJ, Fan SH, Du SX, Li XD, Wu DM, Lu J, Zheng YL. MicroRNA-182 downregulates Wnt/β-catenin signaling, inhibits proliferation, and promotes apoptosis in human osteosarcoma cells by targeting HOXA9. Oncotarget 2017; 8:101345-101361. [PMID: 29254169 PMCID: PMC5731879 DOI: 10.18632/oncotarget.21167] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Accepted: 09/04/2017] [Indexed: 12/12/2022] Open
Abstract
We investigated the mechanisms by which microRNA (miR)-182 promotes apoptosis and inhibits proliferation in human osteosarcoma (OS) cells. Levels of miR-182 and Homeobox A9 (HOXA9) expression were compared between human OS and normal cells. Subjects were divided into OS and normal groups. We analyzed the target relationship of miR-182 and Homeobox A9 (HOXA9). Cells were then assigned into blank, negative control, miR-182 mimics, miR-182 inhibitors, siRNA-HOXA9, or and miR-182 inhibitors + siRNA-HOXA9 groups. Cell function was assayed by CCK-8, flow cytometry and wound healing assay. Additionally, we analyzed OS tumor growth in a xenograft mouse model. Dual-luciferase reporter assays indicated miR-182 directly targets HOXA9. Reverse transcription quantitative PCR and western blotting revealed elevated expression of miR-182, WIF-1, BIM, and Bax, and reduced expression of HOXA9, Wnt, β-catenin, Survivin, Cyclin D1, c-Myc, Mcl-1, Bcl-xL, and Snail in osteosarcoma cells treated with miR-182 mimic or siRNA-HOXA9 as compared to controls. Osteosarcoma cells also exhibited decreased cell proliferation, migration, and tumor growth, and increased apoptosis when treated with miR-182 mimic or siRNA-HOXA9. Correspondingly, in a xenograft mouse model, osteosarcoma tumor volume and growth were increased when cells were treated with miR-182 inhibitor and decreased by miR-182 mimic or siRNA-HOXA9. These results indicate that miR-182 downregulates Wnt/β-catenin signaling, inhibits cell proliferation, and promotes apoptosis in osteosarcoma cells by suppressing HOXA9 expression.
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Affiliation(s)
- Zi-Feng Zhang
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou 221116, P.R. China
| | - Yong-Jian Wang
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou 221116, P.R. China
| | - Shao-Hua Fan
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou 221116, P.R. China
| | - Shi-Xin Du
- Department of Orthopedics, The Third Affiliated Hospital, Shenzhen University, Shenzhen 518002, P.R. China
| | - Xue-Dong Li
- Department of Orthopedics, The Third Affiliated Hospital, Shenzhen University, Shenzhen 518002, P.R. China
| | - Dong-Mei Wu
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou 221116, P.R. China
| | - Jun Lu
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou 221116, P.R. China
| | - Yuan-Lin Zheng
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou 221116, P.R. China
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Effects of microRNA-136 on melanoma cell proliferation, apoptosis, and epithelial-mesenchymal transition by targetting PMEL through the Wnt signaling pathway. Biosci Rep 2017; 37:BSR20170743. [PMID: 28724603 PMCID: PMC5587917 DOI: 10.1042/bsr20170743] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 07/16/2017] [Accepted: 07/18/2017] [Indexed: 12/17/2022] Open
Abstract
The study aims to evaluate the effects of miR-136 on the proliferation, apoptosis, and epithelial–mesenchymal transition (EMT) of melanoma cells by targetting premelanosome protein (PMEL) through the Wnt signaling pathway. After establishment of melanoma mouse models, melanoma (model group) and normal tissues (normal group) were collected. Immunohistochemistry was performed to determine PMEL protein concentration. Mouse melanoma cells were assigned into control, blank, negative control (NC), miR-136 mimics, miR-136 inhibitors, siRNA-PMEL, and miR-136 inhibitors + siRNA-PMEL, LiC1 (Wnt signaling pathway activator), and siRNA-PMEL+ LiCl groups. MTT, Scratch test, Transwell assay, and flow cytometry were performed to measure cell proliferation, migration, invasion, and apoptosis. Quantitative real-time PCR (qRT-PCR) and Western blotting were performed to evaluate miR-136, PMEL, β-catenin, Wnt3a, Bcl-2, Bax, Caspase, E-cadherin, and N-cadherin expressions. PMEL is highly expressed in melanoma tissues. MiR-136, Bax, Caspase, and E-cadherin expressions decreased in the model group, whereas PMEL, β-catenin, Bcl-2, Wnt3a, and N-cadherin expressions increased. Bax, Caspase, and E-cadherin expressions increased in the miR-136 mimics and siRNA-PMEL groups, whereas the expressions decreased in the miR-136 inhibitors group and LiC1 group. PMEL, β-catenin, Bcl-2, Wnt3a, and N-cadherin expressions, cell proliferation, migration, and invasion decreased, and the apoptosis rate inceased in the miR-136 mimics and siRNA-PMEL groups; whereas the tendencies were opposite to those in the miR-136 inhibitors group and LiC1 group. In the siRNA-PMEL+ LiCl group, PMEL expression decreased. These findings indicated that overexpression of miR-136 inhibits melanoma cell EMT, proliferation, migration, invasion, and promotes apoptosis by targetting PMEL through down-regulation of the Wnt signaling pathway.
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