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Guo Y, Feng L. N6-methyladenosine-mediated upregulation of LINC00520 accelerates breast cancer progression via regulating miR-577/POSTN axis and downstream ILK/AKT/mTOR signaling pathway. Arch Biochem Biophys 2022; 729:109381. [PMID: 36027936 DOI: 10.1016/j.abb.2022.109381] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 08/03/2022] [Accepted: 08/18/2022] [Indexed: 11/19/2022]
Abstract
Various lncRNAs have been reported to be closely associated with cancer initiation and progression in breast cancer (BC), including LINC00520. However, the role and underlying mechanisms by which LINC00520 affects BC aggressiveness have not been fully delineated, and this study aimed to explore this issue. Through performing qRT-PCR analysis, we proved that LINC00520 was significantly upregulated in BC tissues and cells, compared with normal tissues and cells. Higher expression of LINC00520 was closely related to higher tumor grade, poor differentiation and shorter survival in BC patients. Next, the loss-of-function experiments evidenced that silencing LINC00520 suppressed BC cell proliferation, migration and epithelial-mesenchymal transition (EMT) in vitro, and inhibited tumorigenesis in vivo. Interestingly, we found that LINC00520 expression was positively regulated by METTL3-mediated N6-methyladenosine(m6A) modification in BC. Furthermore, we identified the tumor-suppressor miR-577 as the binding target of LINC00520 in BC. Mechanistically, LINC00520 elevated POSTN level via sponging miR-577, resulting in the activation of the downstream tumor-promoting ILK/Akt/mTOR pathway. Finally, the rescuing experiments evidenced that both POSTN knockdown and ILK/Akt/mTOR pathway inhibitor OSU-T315 abrogated the promoting effects of miR-577 ablation on the malignant phenotypes in BC. Collectively, this study firstly verified that LINC00520 acted as a ceRNA of miR-577 to advance BC aggressiveness in a m6A-dependent manner, providing novel biomarkers for BC diagnosis and therapy.
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Affiliation(s)
- Yang Guo
- Department of Breast Surgery, The First Hospital of China Medical University, Shenyang, 110001, Liaoning, China.
| | - Liang Feng
- Department of Breast Surgery, The First Hospital of China Medical University, Shenyang, 110001, Liaoning, China.
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2
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Dong D, Fu Y, Chen F, Zhang J, Jia H, Li J, Wang H, Wen J. Hyperoxia sensitizes hypoxic HeLa cells to ionizing radiation by downregulating HIF‑1α and VEGF expression. Mol Med Rep 2021; 23:62. [PMID: 33215223 PMCID: PMC7706008 DOI: 10.3892/mmr.2020.11700] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 10/02/2020] [Indexed: 12/16/2022] Open
Abstract
The current study investigated whether hyperoxia may reverse hypoxia‑induced radioresistance (RR) in cervical cancer. Human HeLa cells exposed to hypoxic, normoxic or hyperoxic conditions were irradiated using X‑rays. Cell proliferation and apoptosis were analyzed using MTT assays and flow cytometry. The expression levels of hypoxia‑inducible factor‑1α (HIF‑1α), VEGF165, VEGFRs, Akt and ERK were measured via western blotting and/or ELISA. The results demonstrated that hypoxia stimulated HIF‑1α and VEGF expression, and induced RR in HeLa cells. The administration of recombinant VEGF or the forced expression of VEGF promoted RR, whereas inactivating HIF‑1α or blocking the VEGF‑VEGFR interaction abrogated hypoxia‑induced RR. Notably, hyperoxia decreased the level of hypoxia‑stimulated HIF‑1α and VEGF, and enhanced radiosensitivity in hypoxic HeLa cells. The results demonstrated that hyperoxia suppressed the hypoxia‑activated Akt and ERK signaling pathways in HeLa cells. Therefore, a high O2 concentration may be considered as a radiotherapeutic sensitizer for hypoxic HeLa cells.
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Affiliation(s)
- Dan Dong
- Department of Obstetrics and Gynecology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Yan Fu
- Department of Obstetrics and Gynecology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Feng Chen
- Department of Obstetrics and Gynecology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Jing Zhang
- Department of Obstetrics and Gynecology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Haiyan Jia
- Department of Obstetrics and Gynecology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Jia Li
- Department of Obstetrics and Gynecology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Huailin Wang
- Department of Obstetrics and Gynecology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Jihong Wen
- Department of Obstetrics and Gynecology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
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Chung HH, Bellefeuille SD, Miller HN, Gaborski TR. Extended live-tracking and quantitative characterization of wound healing and cell migration with SiR-Hoechst. Exp Cell Res 2018; 373:198-210. [PMID: 30399373 PMCID: PMC6327846 DOI: 10.1016/j.yexcr.2018.10.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 10/24/2018] [Accepted: 10/26/2018] [Indexed: 01/14/2023]
Abstract
Cell migration is essential to many life processes, including immune response, tissue repair, and cancer progression. A reliable quantitative characterization of the cell migration can therefore aid in the high throughput screening of drug efficacy in wound healing and cancer treatments. In this work, we report what we believe is the first use of SiR-Hoechst for extended live tracking and automated analysis of cell migration and wound healing. We showed through rigorous statistical comparisons that this far-red label does not affect migratory behavior. We observed excellent automated tracking of random cell migration, in which the motility parameters (speed, displacement, path length, directionality ratio, persistence time, and direction autocorrelation) obtained closely match those obtained from manual tracking. We also present an analysis framework to characterize the healing of a scratch wound from the perspective of single cells. The use of SiR-Hoechst is advantageous for the crowded environments in wound healing assays because as long as cell nuclei do not overlap, continuous tracking can be maintained even if there is cell-cell contact. In this paper, we report wound recovery based on the number of cells migrating into the wound over time, normalized by the initial cell count prior to the infliction of the wound. This normalized cell count approach is impervious to operator bias during the arbitration of wound edges and is also robust against variability that arises due to differences in the cell density of different samples. Additional wound healing characteristics were also defined based on the evolution of cell speed and directionality during healing. Not unexpected, the wound healing cells exhibited much higher tendency to maintain the same migratory direction in comparison to the randomly migrating cells. The use of SiR-Hoechst thus greatly simplified the automation of single cell and whole population analysis with high spatial and temporal resolution over extended periods of time.
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Affiliation(s)
- Henry H Chung
- Biomedical Engineering, Rochester Institute of Technology, 160 Lomb Memorial Drive, Rochester, NY 14623, United States
| | - Sean D Bellefeuille
- Biomedical Engineering, Rochester Institute of Technology, 160 Lomb Memorial Drive, Rochester, NY 14623, United States
| | - Hayley N Miller
- Biomedical Engineering, Rochester Institute of Technology, 160 Lomb Memorial Drive, Rochester, NY 14623, United States
| | - Thomas R Gaborski
- Biomedical Engineering, Rochester Institute of Technology, 160 Lomb Memorial Drive, Rochester, NY 14623, United States.
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Zhang TZ, Hua T, Han LK, Zhang Y, Li GY, Zhang QL, Su GF. Antiapoptotic role of the cellular repressor of E1A-stimulated genes (CREG) in retinal photoreceptor cells in a rat model of light-induced retinal injury. Biomed Pharmacother 2018; 103:1355-1361. [PMID: 29864918 DOI: 10.1016/j.biopha.2018.04.081] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 04/10/2018] [Accepted: 04/10/2018] [Indexed: 10/17/2022] Open
Abstract
OBJECTIVE Light injury-induced apoptosis of retinal photoreceptor cells can lead to vision loss. The mechanism underlying such injury remains unclear, and there are no effective therapies at present. The aim of this study was to examine the potential antiapoptotic role of the cellular repressor of E1A-stimulated genes (CREG) in retinal cells in a rat model of light-induced retinal damage. METHODS CREG proteins were injected into the vitreous space of rats in which light retinal injury was induced. An equal volume of PBS was injected into the vitreous space of a control group. Retinas were collected for H&E staining and Western blotting analysis 1, 3, and 7 days later. Inhibitors or agonist for P38, JNK, and AKT were injected into the vitreous space to verify CREG function. RESULTS In rats with light-induced retinal injury, the CREG treatment inhibited the expression of apoptosis-related proteins caspase-3, caspase-8, and caspase-9 and signaling proteins phosphorylated ERK (P-ERK), phosphorylated JNK (P-JNK), phosphorylated P38 (P-P38), and phosphorylated AKT (P-AKT). An inhibitor of PI3K-AKT and an agonists of P38 and JNK abrogated the inhibitory effect of CREG on caspase-3 expression. CONCLUSION CREG protected retinal cells against apoptosis by inhibiting P38/MAPK and JNK/MAPK signaling pathways and activating the PI3K-AKT signaling pathway.
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Affiliation(s)
- Tian-Zi Zhang
- Affiliated Hospital of Inner Mongolia University for the Nationalities, Inner Mongolia, China
| | - Ting Hua
- Affiliated Hospital of Inner Mongolia University for the Nationalities, Inner Mongolia, China
| | - Li-Kun Han
- Affiliated Hospital of Inner Mongolia University for the Nationalities, Inner Mongolia, China
| | - Yan Zhang
- Department of Ophthalmology, Second Hospital of JiLin University, ChangChun, China
| | - Guang-Yu Li
- Department of Ophthalmology, Second Hospital of JiLin University, ChangChun, China
| | - Qiu-Li Zhang
- Affiliated Hospital of Inner Mongolia University for the Nationalities, Inner Mongolia, China.
| | - Guan-Fang Su
- Department of Ophthalmology, Second Hospital of JiLin University, ChangChun, China.
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Younis LT, Abu Hassan MI, Taiyeb Ali TB, Bustami TJ. 3D TECA hydrogel reduces cellular senescence and enhances fibroblasts migration in wound healing. Asian J Pharm Sci 2017; 13:317-325. [PMID: 32104405 PMCID: PMC7032142 DOI: 10.1016/j.ajps.2017.12.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 08/08/2017] [Accepted: 12/04/2017] [Indexed: 12/11/2022] Open
Abstract
This study was designed to investigate the effect of 3D TECA hydrogel on the inflammatory-induced senescence marker, and to assess the influence of the gel on the periodontal ligament fibroblasts (PDLFs) migration in wound healing in vitro. PDLFs were cultured with 20 ng/ml TNF-α to induce inflammation in the presence and absence of 50 µM 3D TECA gel for 14 d. The gel effect on the senescence maker secretory associated-β-galactosidase (SA-β-gal) activity was measured by a histochemical staining. Chromatin condensation and DNA synthesis of the cells were assessed by 4′,6-diamidino-2-phenylindole and 5-ethynyl-2′-deoxyuridine fluorescent staining respectively. For evaluating fibroblasts migration, scratch wound healing assay and Pro-Plus Imaging software were used. The activity of senescence marker, SA-β-gal, was positive in the samples with TNF-α-induced inflammation. SA-β-gal percentage is suppressed (>65%, P < 0.05) in the treated cells with TECA gel as compared to the non-treated cells. Chromatin foci were obvious in the non-treated samples. DNA synthesis was markedly recognized by the fluorescent staining in the treated compared to non-treated cultures. Scratch wound test indicated that the cells migration rate was significantly higher (14.9 µm2/h, P < 0.05) in the treated versus (11 µm2/h) for control PDLFs. The new formula of 3D TECA suppresses the inflammatory-mediated cellular senescence and enhanced fibroblasts proliferation and migration. Therefore, 3D TECA may be used as an adjunct to accelerate repair and healing of periodontal tissues.
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Affiliation(s)
- Luay Thanoon Younis
- Faculty of Dentistry, Universiti Teknologi MARA, Sungai Buloh 47000, Malaysia
| | | | - Tara Bai Taiyeb Ali
- Faculty of Dentistry, Universiti Teknologi MARA, MAHSA University, Jenjarom 42610, Malaysia
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Xia XW, Zhou YQ, Luo H, Zeng C. Inhibitory effect of D3 dopamine receptors on neuropeptide Y‑induced migration in vascular smooth muscle cells. Mol Med Rep 2017; 16:5606-5610. [PMID: 28849020 DOI: 10.3892/mmr.2017.7271] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Accepted: 06/22/2017] [Indexed: 11/06/2022] Open
Abstract
Abnormal migration of vascular smooth muscle cells (VSMCs) serves an important role in hypertension, atherosclerosis and restenosis following angioplasty, which is regulated numerous hormonal and humoral factors, including neuropeptide Y (NPY) and dopamine. Dopamine and NPY are both sympathetic neurotransmitters, and a previous study reported that NPY increased VSMC proliferation, while dopamine receptor inhibited it. Therefore, the authors wondered whether or not there is an inhibitory effect of dopamine receptor on NPY‑mediated VSMC migration. The present study demonstrated that stimulation with NPY dose‑dependence (10‑10‑10‑7M, 24 h) increased VSMC migration, the stimulatory effect of NPY was via the Y1 receptor. This is because, in the presence of the Y1 receptor antagonist, BIBP3226 (10‑7 M), the stimulatory effect of NPY on VSMC migration was blocked. Activation of the D3 receptor by PD128907 dose‑dependence (10‑11‑10‑8 M) reduced the stimulatory effect of NPY on VSMC migration. The effect of PD128907 was via the D3 receptor, because the inhibitory effect of PD128907 on NPY‑mediated migration was blocked by the D3 receptor antagonist, U99194. The authors' further study suggested that the inhibitory effect of the D3 receptor was via the PKA signaling pathway, in the presence of the PKA inhibitor, 14‑22 (10‑6 M), the inhibitory effect of PD128907 on VSMC migration was blocked. Moreover, the inhibitory effect of PD128907 was imitated by PKA activator, Sp‑cAMP [S], in the presence of Sp‑cAMP [S], the NPY‑mediated stimulatory effect on VSMC migration was abolished. The present study indicated that activation of the D3 receptor inhibits NPY Y1‑mediated migration on VSMCs, PKA is involved in the signaling pathway.
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Affiliation(s)
- Xue-Wei Xia
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing Institute of Cardiology, Chongqing Cardiovascular Clinical Research Center, Chongqing 400042, P.R. China
| | - Yong-Qiao Zhou
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing Institute of Cardiology, Chongqing Cardiovascular Clinical Research Center, Chongqing 400042, P.R. China
| | - Hao Luo
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing Institute of Cardiology, Chongqing Cardiovascular Clinical Research Center, Chongqing 400042, P.R. China
| | - Chunyu Zeng
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing Institute of Cardiology, Chongqing Cardiovascular Clinical Research Center, Chongqing 400042, P.R. China
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Zeng B, Liu L, Wang S, Dai Z. ILK regulates MSCs survival and angiogenesis partially through AKT and mTOR signaling pathways. Acta Histochem 2017; 119:400-406. [PMID: 28457660 DOI: 10.1016/j.acthis.2017.04.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Accepted: 04/18/2017] [Indexed: 01/17/2023]
Abstract
Mesenchymal stem cells (MSCs) exert therapeutic effects on treating acute myocardial infarction (AMI). Angiogenesis in ischemic heart can promote the supply of oxygen and nutrients to both ischemic myocardium and transplanted stem cells. Focus is then given to the evolving strategies amied at angiogenesis. ILK has been reported to be an important factor regulating apoptosis and angiogenesis. This study examined the role and mechanism of ILK in MSCs survival and angiogenesis. In hypoxic condition, upregulation of ILK expression increased the phosphorylation of Akt and mTOR, resulting in markedly enchanced MSCs survival and VEGF expression; while significantly inhibited MSCs survival and VEGF expression was detected in MSCs with ILK kinase inactivation, which was associated with a reduction of phosphorylation of Akt and mTOR. In addition, it also caused an inhibitory effects of ILK on MSCs survival and VEGF expression, which was abolished by Akt or mTOR inhibitor. Furthermore, it was observed that ILK-overexpressed MSCs increased MSCs survival at 4days and angiogenesis at 3 weeks after transplantation into infracted myocardium as compared with GFP-MSCs group and ILK-SiRNA-MSCs group. This enhanced response was associated with attenuated left ventricular (LV) chamber dilation, reduced LV fibrosis, decreased infarct size and improved LV function. These findings reveal ILK play a pivotal role in regulating MSCs survival and VEGF expression partially through Akt and mTOR signaling pathway. In addition, transplantation of ILK-overexpressed MSCs into infracted myocardium resulted in reduced fibrosis, improved cardiac function and remodeling, which mainly medicated through increased MSCs survival and angiogenesis.
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Affiliation(s)
- Bin Zeng
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, PR China.
| | - Lei Liu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, PR China
| | - Shaofeng Wang
- Department of Internal Medicine, Jiangxia District Hospital of Traditional Chinese Medicine, Jiangxia, Hubei, PR China
| | - Zhiguo Dai
- The First People's Hospital of Cardiology, Jinmen, Hubei, PR China
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Ascione F, Vasaturo A, Caserta S, D'Esposito V, Formisano P, Guido S. Comparison between fibroblast wound healing and cell random migration assays in vitro. Exp Cell Res 2016; 347:123-132. [PMID: 27475838 DOI: 10.1016/j.yexcr.2016.07.015] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Revised: 07/13/2016] [Accepted: 07/14/2016] [Indexed: 11/29/2022]
Abstract
Cell migration plays a key role in many biological processes, including cancer growth and invasion, embryogenesis, angiogenesis, inflammatory response, and tissue repair. In this work, we compare two well-established experimental approaches for the investigation of cell motility in vitro: the cell random migration (CRM) and the wound healing (WH) assay. In the former, extensive tracking of individual live cells trajectories by time-lapse microscopy and elaborate data processing are used to calculate two intrinsic motility parameters of the cell population under investigation, i.e. the diffusion coefficient and the persistence time. In the WH assay, a scratch is made in a confluent cell monolayer and the closure time of the exposed area is taken as an easy-to-measure, empirical estimate of cell migration. To compare WH and CRM we applied the two assays to investigate the motility of skin fibroblasts isolated from wild type and transgenic mice (TgPED) overexpressing the protein PED/PEA-15, which is highly expressed in patients with type 2 diabetes. Our main result is that the cell motility parameters derived from CRM can be also estimated from a time-resolved analysis of the WH assay, thus showing that the latter is also amenable to a quantitative analysis for the characterization of cell migration. To our knowledge this is the first quantitative comparison of these two widely used techniques.
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Affiliation(s)
- Flora Ascione
- Dipartimento di Ingegneria Chimica dei Materiali e della Produzione Industriale (DICMAPI), Università di Napoli Federico II, P.le Tecchio, 80, 80125 Napoli, Italy
| | - Angela Vasaturo
- Dipartimento di Ingegneria Chimica dei Materiali e della Produzione Industriale (DICMAPI), Università di Napoli Federico II, P.le Tecchio, 80, 80125 Napoli, Italy
| | - Sergio Caserta
- Dipartimento di Ingegneria Chimica dei Materiali e della Produzione Industriale (DICMAPI), Università di Napoli Federico II, P.le Tecchio, 80, 80125 Napoli, Italy; CEINGE Biotecnologie Avanzate, Via Sergio Pansini, 5, 80131 Naples, Italy; Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), UdR INSTM Napoli Federico II, P.le Tecchio, 80, 80125 Napoli, Italy.
| | - Vittoria D'Esposito
- Dipartimento di Scienze Mediche Traslazionali (DISMET), Università di Napoli Federico II, Via Pansini 5, 80131 Napoli, Italy
| | - Pietro Formisano
- Dipartimento di Scienze Mediche Traslazionali (DISMET), Università di Napoli Federico II, Via Pansini 5, 80131 Napoli, Italy; Istituto di Endocrinologia ed Oncologia Sperimentale del CNR, Via Pansini 5, 80131 Napoli, Italy
| | - Stefano Guido
- Dipartimento di Ingegneria Chimica dei Materiali e della Produzione Industriale (DICMAPI), Università di Napoli Federico II, P.le Tecchio, 80, 80125 Napoli, Italy; CEINGE Biotecnologie Avanzate, Via Sergio Pansini, 5, 80131 Naples, Italy; Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), UdR INSTM Napoli Federico II, P.le Tecchio, 80, 80125 Napoli, Italy
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Liu Y, Tian X, Li Y, Liu D, Liu M, Zhang X, Zhang Q, Yan C, Han Y. Up-Regulation of CREG Expression by the Transcription Factor GATA1 Inhibits High Glucose- and High Palmitate-Induced Apoptosis in Human Umbilical Vein Endothelial Cells. PLoS One 2016; 11:e0154861. [PMID: 27139506 PMCID: PMC4854376 DOI: 10.1371/journal.pone.0154861] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 04/20/2016] [Indexed: 01/14/2023] Open
Abstract
Background Endothelial cell (EC) apoptosis plays a vital role in the pathogenesis of atherosclerosis in patients with diabetes mellitus (DM), but the underlying mechanism remains unclear. Cellular repressor of E1A-stimulated genes (CREG) is a novel gene reported to be involved in maintaining the homeostasis of ECs. Therefore, in the present study, we investigated the role of CREG in high glucose/high palmitate-induced EC apoptosis and to decipher the upstream regulatory mechanism underlying the transcriptional regulation of CREG. Methods The expression of CREG and the rate of apoptosis were assessed in lower-limb atherosclerotic lesions from patients with type 2 DM (T2DM). Primary human umbilical vein endothelial cells (HUVECs) were isolated and cultured in a high glucose/high palmitate medium (25 mmol/L D-glucose, 0.4 mmol/L palmitate), and the over-expression and knock-down of CREG were performed in HUVECs to determine the role of CREG in EC apoptosis. The upstream regulatory mechanism of CREG was identified using a promoter-binding transcription-factor profiling array, chromatin immunoprecipitation (ChIP) assay and a mutation analysis. Results Compared with normal arteries from non-diabetic patients, reduced CREG expression and increased apoptosis were found in the endothelium of atherosclerotic lesions from patients with T2DM. In vitro treatment of HUVECs with a high glucose/high palmitate medium also resulted in decreased CREG expression and increased apoptosis. Moreover, high glucose/high palmitate induced-HUVEC apoptosis was increased by the knock-down of CREG and rescued by the over-expression of CREG. We also demonstrated that GATA1 was able to bind to the promoter of the human CREG gene. A deletion mutation at -297/-292 in the CREG promoter disrupted GATA1 binding and reduced the activation of CREG transcription by approximately 83.3%. Finally, the overexpression of GATA1 abrogated the high glucose/high palmitate-induced apoptosis in HUVECs. Conclusions The over-expression of CREG inhibits high glucose/high palmitate-induced apoptosis in HUVECs. CREG is transcriptionally upregulated by GATA1. Thus, CREG might be a potential therapeutic target for intervention of vascular complications related to diabetes.
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Affiliation(s)
- Yanxia Liu
- Graduate School of Third Military Medical University, Chongqing, China
- Department of Cardiology and Cardiovascular Research Institute, General Hospital of Shenyang Military Region, Shenyang, China
| | - Xiaoxiang Tian
- Department of Cardiology and Cardiovascular Research Institute, General Hospital of Shenyang Military Region, Shenyang, China
| | - Yang Li
- Department of Cardiology and Cardiovascular Research Institute, General Hospital of Shenyang Military Region, Shenyang, China
| | - Dan Liu
- Department of Cardiology and Cardiovascular Research Institute, General Hospital of Shenyang Military Region, Shenyang, China
| | - Meili Liu
- Department of Cardiology and Cardiovascular Research Institute, General Hospital of Shenyang Military Region, Shenyang, China
| | - Xiaolin Zhang
- Department of Cardiology and Cardiovascular Research Institute, General Hospital of Shenyang Military Region, Shenyang, China
| | - Quanyu Zhang
- Department of Cardiology and Cardiovascular Research Institute, General Hospital of Shenyang Military Region, Shenyang, China
| | - Chenghui Yan
- Department of Cardiology and Cardiovascular Research Institute, General Hospital of Shenyang Military Region, Shenyang, China
| | - Yaling Han
- Department of Cardiology and Cardiovascular Research Institute, General Hospital of Shenyang Military Region, Shenyang, China
- * E-mail:
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Clark DJ, Mei Y, Sun S, Zhang H, Yang AJ, Mao L. Glycoproteomic Approach Identifies KRAS as a Positive Regulator of CREG1 in Non-small Cell Lung Cancer Cells. Am J Cancer Res 2016; 6:65-77. [PMID: 26722374 PMCID: PMC4679355 DOI: 10.7150/thno.12350] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Accepted: 09/09/2015] [Indexed: 01/05/2023] Open
Abstract
Protein glycosylation plays a fundamental role in a multitude of biological processes, and the associated aberrant expression of glycoproteins in cancer has made them attractive biomarkers and therapeutic targets. In this study, we examined differentially expressed glycoproteins in cell lines derived from three different states of lung tumorigenesis: an immortalized bronchial epithelial cell (HBE) line, a non-small cell lung cancer (NSCLC) cell line harboring a Kirsten rat sarcoma viral oncogene homolog (KRAS) activation mutation and a NSCLC cell line harboring an epidermal growth factor receptor (EGFR) activation deletion. Using a Triple SILAC proteomic quantification strategy paired with hydrazide chemistry N-linked glycopeptide enrichment, we quantified 118 glycopeptides in the three cell lines derived from 82 glycoproteins. Proteomic profiling revealed 27 glycopeptides overexpressed in both NSCLC cell lines, 6 glycopeptides overexpressed only in the EGFR mutant cells and 19 glycopeptides overexpressed only in the KRAS mutant cells. Further investigation of a panel of NSCLC cell lines found that Cellular repressor of E1A-stimulated genes (CREG1) overexpression was closely correlated with KRAS mutation status in NSCLC cells and could be down-regulated by inhibition of KRAS expression. Our results indicate that CREG1 is a down-stream effector of KRAS in a sub-type of NSCLC cells and a novel candidate biomarker or therapeutic target for KRAS mutant NSCLC.
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11
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Zhou Y, Shi W, Luo H, Yue R, Wang Z, Wang W, Liu L, Wang WE, Wang H, Zeng C. Inhibitory effect of D1-like dopamine receptors on neuropeptide Y-induced proliferation in vascular smooth muscle cells. Hypertens Res 2015; 38:807-12. [PMID: 26178154 DOI: 10.1038/hr.2015.84] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 04/17/2015] [Accepted: 05/17/2015] [Indexed: 02/05/2023]
Abstract
Proliferation of vascular smooth muscle cells (VSMCs) is thought to have a key role in the development of atherosclerotic lesions. Neuropeptide Y (NPY), norepinephrine and dopamine are sympathetic neurotransmitters. NPY has been particularly shown to stimulate proliferation of VSMCs. NPY, norepinephrine and dopamine are all sympathetic transmitters. In our previous study, we found that in the presence of the dopamine receptor, the α1-adrenergic receptor-mediated VSMC proliferation is reduced. We hypothesize that the activation of the D1-like receptor might inhibit the NPY-mediated VSMC proliferation. In our present study, we found that NPY, mainly via the Y1 receptor, increased VSMC proliferation. This was determined by [(3)H]-thymidine incorporation, in a concentration (10(-11) to 10(-8) M)-dependent manner. In the presence of the D1-like receptor agonist, fenoldopam (10(-12) to 10(-5) M), the stimulatory effect of NPY on VSMC proliferation was reduced. The involvement of the D1-like receptor was confirmed when the inhibitory effect of fenoldopam was reversed in the presence of the D1-like receptor antagonist SCH-23390 (10(-8) M). Moreover, the inhibitory effect of fenoldopam on NPY-mediated VSMC proliferation was also blocked in the presence of the PKA inhibitor 14-22 (10(-6) M). Protein kinase A activator 8-(4-chlorophenylthio) adenosine-3,5-cyclic monophosphorothioate, Sp-isomer sodium salt (10(-6) M) could simulate the stimulatory effect of fenoldopam. It indicated that the inhibitory effect of D1-like receptors on NPY-mediated VSMC proliferation may have an important role in the regulation of blood pressure or prevention of atherosclerosis.
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Affiliation(s)
- Yongqiao Zhou
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, China
- Chongqing Institute of Cardiology, Chongqing, China
- Department of Cardiology, The First Affiliated Hospital of Shantou University Medical College, Shantou, China
| | - Weibin Shi
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, China
- Chongqing Institute of Cardiology, Chongqing, China
| | - Hao Luo
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, China
- Chongqing Institute of Cardiology, Chongqing, China
| | - Rongchuan Yue
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, China
- Chongqing Institute of Cardiology, Chongqing, China
| | - Zhen Wang
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, China
- Chongqing Institute of Cardiology, Chongqing, China
| | - Wei Wang
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, China
- Chongqing Institute of Cardiology, Chongqing, China
| | - Li Liu
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, China
- Chongqing Institute of Cardiology, Chongqing, China
| | - Wei Eric Wang
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, China
- Chongqing Institute of Cardiology, Chongqing, China
| | - Hongyong Wang
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, China
- Chongqing Institute of Cardiology, Chongqing, China
| | - Chunyu Zeng
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, China
- Chongqing Institute of Cardiology, Chongqing, China
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Liu P, Zhao Y, Yan Y, Hu Y, Yang W, Cai K. Construction of extracellular microenvironment to improve surface endothelialization of NiTi alloy substrate. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 55:1-7. [DOI: 10.1016/j.msec.2015.05.047] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Revised: 03/22/2015] [Accepted: 05/15/2015] [Indexed: 12/13/2022]
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Sun M, Tian X, Liu Y, Zhu N, Li Y, Yang G, Peng C, Yan C, Han Y. Cellular repressor of E1A-stimulated genes inhibits inflammation to decrease atherosclerosis in ApoE−/− mice. J Mol Cell Cardiol 2015; 86:32-41. [DOI: 10.1016/j.yjmcc.2015.07.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Revised: 06/19/2015] [Accepted: 07/05/2015] [Indexed: 12/27/2022]
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Kowalewski-Nimmerfall E, Schähs P, Maresch D, Rendic D, Krämer H, Mach L. Drosophila melanogaster cellular repressor of E1A-stimulated genes is a lysosomal protein essential for fly development. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2014; 1843:2900-12. [PMID: 25173815 PMCID: PMC4331662 DOI: 10.1016/j.bbamcr.2014.08.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Revised: 08/20/2014] [Accepted: 08/22/2014] [Indexed: 01/01/2023]
Abstract
Mammalian cellular repressor of E1A-stimulated genes is a lysosomal glycoprotein implicated in cellular growth and differentiation. The genome of the fruit fly Drosophila melanogaster encodes a putative orthologue (dCREG), suggesting evolutionarily conserved physiological functions of this protein. In D. melanogaster S2 cells, dCREG was found to localize in lysosomes. Further studies revealed that intracellular dCREG is subject of proteolytic maturation. Processing and turnover could be substantially reduced by RNAi-mediated silencing of cathepsin L. In contrast to mammalian cells, lysosomal delivery of dCREG does not depend on its carbohydrate moiety. Furthermore, depletion of the putative D. melanogaster lysosomal sorting receptor lysosomal enzyme receptor protein did not compromise cellular retention of dCREG. We also investigated the developmental consequences of dCREG ablation in whole D. melanogaster flies. Ubiquitous depletion of dCREG proved lethal at the late pupal stage once a knock-down efficiency of > 95% was achieved. These results demonstrate that dCREG is essential for proper completion of fly development. The lysosomal localization of CREG is evolutionarily conserved. Lysosomal delivery of CREG is mediated by different mechanisms in mammals and flies. Cathepsin L is the main protease responsible for CREG processing and turnover. CREG deficiency causes developmental lethality in D. melanogaster.
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Affiliation(s)
- Elisabeth Kowalewski-Nimmerfall
- Department of Applied Genetics and Cell Biology, University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria
| | - Philipp Schähs
- Department of Applied Genetics and Cell Biology, University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria
| | - Daniel Maresch
- Department of Chemistry, University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria
| | - Dubravko Rendic
- Department of Chemistry, University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria
| | - Helmut Krämer
- Department of Neuroscience, University of Texas Southwestern Medical Center, 6000 Harry Hines Blvd., Dallas, TX 75390-9111, USA; Department of Cell Biology, University of Texas Southwestern Medical Center, 6000 Harry Hines Blvd., Dallas, TX 75390-9111, USA
| | - Lukas Mach
- Department of Applied Genetics and Cell Biology, University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria.
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Zhou W, Wang G, Guo S. Regulation of angiogenesis via Notch signaling in breast cancer and cancer stem cells. Biochim Biophys Acta Rev Cancer 2013; 1836:304-20. [PMID: 24183943 DOI: 10.1016/j.bbcan.2013.10.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2013] [Revised: 10/14/2013] [Accepted: 10/18/2013] [Indexed: 02/07/2023]
Abstract
Breast cancer angiogenesis is elicited and regulated by a number of factors including the Notch signaling. Notch receptors and ligands are expressed in breast cancer cells as well as in the stromal compartment and have been implicated in carcinogenesis. Signals exchanged between neighboring cells through the Notch pathway can amplify and consolidate molecular differences, which eventually dictate cell fates. Notch signaling and its crosstalk with many signaling pathways play an important role in breast cancer cell growth, migration, invasion, metastasis and angiogenesis, as well as cancer stem cell (CSC) self-renewal. Therefore, significant attention has been paid in recent years toward the development of clinically useful antagonists of Notch signaling. Better understanding of the structure, function and regulation of Notch intracellular signaling pathways, as well as its complex crosstalk with other oncogenic signals in breast cancer cells will be essential to ensure rational design and application of new combinatory therapeutic strategies. Novel opportunities have emerged from the discovery of Notch crosstalk with inflammatory and angiogenic cytokines and their links to CSCs. Combinatory treatments with drugs designed to prevent Notch oncogenic signal crosstalk may be advantageous over λ secretase inhibitors (GSIs) alone. In this review, we focus on the more recent advancements in our knowledge of aberrant Notch signaling contributing to breast cancer angiogenesis, as well as its crosstalk with other factors contributing to angiogenesis and CSCs.
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Affiliation(s)
- Weiqiang Zhou
- Key Laboratory of Environmental Pollution and Microecology of Liaoning Province, Shenyang Medical College, No. 146 North Huanghe St, Huanggu Dis, Shenyang City, Liaoning Pro 110034, PR China.
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Tao J, Yan C, Tian X, Liu S, Li Y, Zhang J, Sun M, Ma X, Han Y. CREG promotes the proliferation of human umbilical vein endothelial cells through the ERK/cyclin E signaling pathway. Int J Mol Sci 2013; 14:18437-56. [PMID: 24018888 PMCID: PMC3794788 DOI: 10.3390/ijms140918437] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Revised: 08/15/2013] [Accepted: 08/28/2013] [Indexed: 11/26/2022] Open
Abstract
Cellular repressor of E1A-stimulated genes (CREG) is a recently discovered secreted glycoprotein involved in homeostatic modulation. We previously reported that CREG is abundantly expressed in the adult vascular endothelium and dramatically downregulated in atherosclerotic lesions. In addition, CREG participates in the regulation of apoptosis, inflammation and wound healing of vascular endothelial cells. In the present study, we attempted to investigate the effect of CREG on the proliferation of vascular endothelial cells and to decipher the underlying molecular mechanisms. Overexpression of CREG in human umbilical vein endothelial cells (HUVEC) was obtained by infection with adenovirus carrying CREG. HUVEC proliferation was investigated by flow cytometry and 5-bromo-2′-deoxy-uridine (BrdU) incorporation assays. The expressions of cyclins, cyclin-dependent kinases and signaling molecules were also examined. In CREG-overexpressing cells, we observed a marked increase in the proportion of the S and G2 population and a decrease in the G0/G1 phase population. The number of BrdU positively-stained cells also increased, obviously. Furthermore, silencing of CREG expression by specific short hairpin RNA effectively inhibited the proliferation of human umbilical vein endothelial cells (HUVEC). CREG overexpression induced the expression of cyclin E in both protein and mRNA levels to regulate cell cycle progression. Further investigation using inhibitor blocking analysis identified that ERK activation mediated the CREG modulation of the proliferation and cyclin E expression in HUVEC. In addition, blocking vascular endothelial growth factor (VEGF) in CREG-overexpressed HUVEC and supplementation of VEGF in CREG knocked-down HUVEC identified that the pro-proliferative effect of CREG was partially mediated by VEGF-induced ERK/cyclin E activation. These results suggest a novel role of CREG to promote HUVEC proliferation through the ERK/cyclin E signaling pathway.
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Affiliation(s)
- Jie Tao
- Graduate School of Third Military Medical University, Chongqing 400038, China; E-Mail:
| | - Chenghui Yan
- Cardiovascular Research Institute and Key laboratory of Cardiology, Shenyang Northern Hospital, Shenyang 110840, China; E-Mails: (C.Y.); (X.T.); (S.L.); (Y.L.); (J.Z.); (M.S.)
| | - Xiaoxiang Tian
- Cardiovascular Research Institute and Key laboratory of Cardiology, Shenyang Northern Hospital, Shenyang 110840, China; E-Mails: (C.Y.); (X.T.); (S.L.); (Y.L.); (J.Z.); (M.S.)
| | - Shaowei Liu
- Cardiovascular Research Institute and Key laboratory of Cardiology, Shenyang Northern Hospital, Shenyang 110840, China; E-Mails: (C.Y.); (X.T.); (S.L.); (Y.L.); (J.Z.); (M.S.)
| | - Yang Li
- Cardiovascular Research Institute and Key laboratory of Cardiology, Shenyang Northern Hospital, Shenyang 110840, China; E-Mails: (C.Y.); (X.T.); (S.L.); (Y.L.); (J.Z.); (M.S.)
| | - Jian Zhang
- Cardiovascular Research Institute and Key laboratory of Cardiology, Shenyang Northern Hospital, Shenyang 110840, China; E-Mails: (C.Y.); (X.T.); (S.L.); (Y.L.); (J.Z.); (M.S.)
| | - Mingyu Sun
- Cardiovascular Research Institute and Key laboratory of Cardiology, Shenyang Northern Hospital, Shenyang 110840, China; E-Mails: (C.Y.); (X.T.); (S.L.); (Y.L.); (J.Z.); (M.S.)
| | - Xinliang Ma
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA 19107, USA; E-Mail:
| | - Yaling Han
- Cardiovascular Research Institute and Key laboratory of Cardiology, Shenyang Northern Hospital, Shenyang 110840, China; E-Mails: (C.Y.); (X.T.); (S.L.); (Y.L.); (J.Z.); (M.S.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +86-24-2305-6123; Fax: +86-24-2392-2184
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Endothelin-1 promotes vascular endothelial growth factor-dependent angiogenesis in human chondrosarcoma cells. Oncogene 2013; 33:1725-35. [DOI: 10.1038/onc.2013.109] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2012] [Revised: 01/25/2013] [Accepted: 02/07/2013] [Indexed: 01/01/2023]
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Duan Y, Liu S, Tao J, You Y, Yang G, Yan C, Han Y. Cellular repressor of E1A stimulated genes enhances endothelial monolayer integrity. Mol Biol Rep 2013; 40:3891-900. [PMID: 23580165 DOI: 10.1007/s11033-012-2373-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Accepted: 12/17/2012] [Indexed: 10/27/2022]
Abstract
Cellular repressor of E1A stimulated genes (CREG) is a novel modulator that maintains the homeostasis of vascular cells. The present study aimed to investigate the effects of CREG on tumor necrosis factor (TNF)-α-mediated inflammatory injury of vascular endothelial cells. Human umbilical vein endothelial cells (HUVECs) were cultured and CREG overexpressing (VC), knockdown (VS) and mock-transfected (VE) HUVECs were challenged with TNF-α. We demonstrated that TNF-α prompted robust intercellular filamentous actin (F-actin) stress fiber formation as examined by rhodamin-phalloidin staining. Transwell assay and rhodamine B isothiocyanate-dextran staining indicated that TNF-α induced intercellular hyperpermeability of the HUVEC monolayers. These effects were attenuated in VC cells with forced CREG overexpression but significantly potentiated in VS cells with CREG silencing. After TNF-α stimulation, interleukin (IL)-6 and IL-8 secretions in VE cells were markedly increased and inducible nitric oxidase (iNOS) expression substantially elevated, whereas these effects were pronouncedly damped in VC cells. Conversely, in VS cells, the increase in inflammatory markers was substantially potentiated. Immunofluorescence staining demonstrated that nuclear factor κB (NF-κB) slowly and transiently translocated into the nuclei of VC cells upon TNF-α stimulation. However, a more swift and sustained nuclear translocation was observed in VS as compared to VE cells. Corresponding changes in the pattern of its protein expression was also observed. These data suggested that CREG can inhibit NF-κB activation, TNF-α-induced inflammatory responses and the hyperpermeability of endothelial cells, and may therefore represent a potential therapeutic target for pathological vascular injury.
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Affiliation(s)
- Yan Duan
- Department of Cardiology, Shenyang Northern Hospital, Cardiovascular Research Institute, 83 Wenhua Road, Shenyang, 110016, China
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Deng J, Han Y, Sun M, Tao J, Yan C, Kang J, Li S. Nanoporous CREG-eluting stent attenuates in-stent neointimal formation in porcine coronary arteries. PLoS One 2013; 8:e60735. [PMID: 23573278 PMCID: PMC3616099 DOI: 10.1371/journal.pone.0060735] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2012] [Accepted: 03/01/2013] [Indexed: 11/18/2022] Open
Abstract
Background The goal of this study was to evaluate the efficacy of a nanoporous CREG-eluting stent (CREGES) in inhibiting neointimal formation in a porcine coronary model. Methods In vitro proliferation assays were performed using isolated human endothelial and smooth muscle cells to investigate the cell-specific pharmacokinetic effects of CREG and sirolimus. We implanted CREGES, control sirolimus-eluting stents (SES) or bare metal stents (BMS) into pig coronary arteries. Histology and immunohistochemistry were performed to assess the efficacy of CREGES in inhibiting neointimal formation. Results CREG and sirolimus inhibited in vitro vascular smooth muscle cell proliferation to a similar degree. Interestingly, human endothelial cell proliferation was only significantly inhibited by sirolimus and was increased by CREG. CREGES attenuated neointimal formation after 4 weeks in porcine coronary model compared with BMS. No differences were found in the injury and inflammation scores among the groups. Scanning electron microscopy and CD31 staining by immunohistochemistry demonstrated an accelerated reendothelialization in the CREGES group compared with the SES or BMS control groups. Conclusions The current study suggests that CREGES reduces neointimal formation, promotes reendothelialization in porcine coronary stent model.
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Affiliation(s)
- Jie Deng
- Department of Cardiology, Institute of Cardiovascular Research of People’s Liberation Army, Shenyang Northern Hospital, Shenyang, Liaoning, China
| | - Yaling Han
- Department of Cardiology, Institute of Cardiovascular Research of People’s Liberation Army, Shenyang Northern Hospital, Shenyang, Liaoning, China
- * E-mail:
| | - Mingyu Sun
- Department of Cardiology, Institute of Cardiovascular Research of People’s Liberation Army, Shenyang Northern Hospital, Shenyang, Liaoning, China
| | - Jie Tao
- Department of Cardiology, Institute of Cardiovascular Research of People’s Liberation Army, Shenyang Northern Hospital, Shenyang, Liaoning, China
| | - Chenghui Yan
- Department of Cardiology, Institute of Cardiovascular Research of People’s Liberation Army, Shenyang Northern Hospital, Shenyang, Liaoning, China
| | - Jian Kang
- Department of Cardiology, Institute of Cardiovascular Research of People’s Liberation Army, Shenyang Northern Hospital, Shenyang, Liaoning, China
| | - Shaohua Li
- Division of Vascular Surgery, Department of Surgery, Robert Wood Johnson Medical School-UMDNJ, New Jersey, United States of America
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