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Calcitriol Suppressed Isoproterenol-induced Proliferation of Cardiac Fibroblasts via Integrin β3/FAK/Akt Pathway. Curr Med Sci 2023; 43:48-57. [PMID: 36680686 DOI: 10.1007/s11596-022-2681-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 11/24/2022] [Indexed: 01/22/2023]
Abstract
OBJECTIVE Cardiac fibroblasts (CFs) proliferation and extracellular matrix deposition are important features of cardiac fibrosis. Various studies have indicated that vitamin D displays an anti-fibrotic property in chronic heart diseases. This study explored the role of vitamin D in the growth of CFs via an integrin signaling pathway. METHODS MTT and 5-ethynyl-2'-deoxyuridine assays were performed to determine cell viability. Western blotting was performed to detect the expression of proliferating cell nuclear antigen (PCNA) and integrin signaling pathway. The fibronectin was observed by ELISA. Immunohistochemical staining was employed to evaluate the expression of integrin β3. RESULTS The PCNA expression in the CFs was enhanced after isoproterenol (ISO) stimulation accompanied by an elevated expression of integrin beta-3 (β3). The blockade of the integrin β3 with a specific integrin β3 antibody reduced the PCNA expression induced by the ISO. Decreasing the integrin β3 by siRNA reduced the ISO-triggered phosphorylation of FAK and Akt. Both the FAK inhibitor and Akt inhibitor suppressed the PCNA expression induced by the ISO in the CFs. Calcitriol (CAL), an active form of vitamin D, attenuated the ISO-induced CFs proliferation by downregulating the integrin β3 expression, and phosphorylation of FAK and Akt. Moreover, CAL reduced the increased levels of fibronectin and hydroxyproline in the CFs culture medium triggered by the ISO. The administration of calcitriol decreased the integrin β3 expression in the ISO-induced myocardial injury model. CONCLUSION These findings revealed a novel role for CAL in suppressing the CFs growth by the downregulation of the integrin β3/FAK/Akt pathway.
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2
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Lymphocytic Extracellular Signal-Regulated Kinase Dysregulation in Autism Spectrum Disorder. J Am Acad Child Adolesc Psychiatry 2023; 62:582-592.e2. [PMID: 36638885 DOI: 10.1016/j.jaac.2022.09.437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 08/06/2022] [Accepted: 01/03/2023] [Indexed: 01/11/2023]
Abstract
OBJECTIVE Extracellular signal-regulated kinase (ERK1/2) is a conserved central intracellular signaling cascade involved in many aspects of neuronal development and plasticity. Converging evidence support investigation of ERK1/2 activity in autism spectrum disorder (ASD). We previously reported enhanced baseline lymphocytic ERK1/2 activation in autism, and now we extend our work to investigate the early phase kinetics of lymphocytic ERK1/2 activation in idiopathic ASD. METHOD Study participants included 67 individuals with ASD (3-25 years of age), 65 age- and sex-matched typical developing control (TDC) subjects, and 36 age-, sex-, and IQ-matched developmental disability control (DDC) subjects matched to those with ASD and IQ <90. We completed an additional analysis comparing results from ASD, TDC, and DDC groups with data from 37 individuals with Fragile X syndrome (FXS). All subjects had blood lymphocyte samples analyzed by flow cytometry following stimulation with phorbol ester and sequentially analyzed for ERK1/2 activation (phosphorylation) at several time points. RESULTS The ASD group (mean = 5.81 minutes; SD = 1.5) had a significantly lower (more rapid) mean ERK1/2 T1/2 activation value than both the DDC group (mean = 6.78 minutes; SD = 1.6; p = .00078) and the TDC group (mean = 6.4 minutes; SD = 1.5; p = .025). More rapid ERK1/2 T1/2 activation times did correlate with increased social impairment across all study groups including the ASD cohort. Differences in ERK1/2 T1/2 activation were more pronounced in younger than in older individuals in the primary analysis. The ASD group additionally had more rapid activation times than the FXS group, and the FXS group activation kinetics did not differ from those of the TDC and DDC groups. CONCLUSION Our findings indicate that lymphocytic ERK1/2 activation kinetics are dysregulated in persons with ASD, marked by more rapid early phase activation. Group differences in ERK1/2 activation kinetics appear to be driven by findings from the youngest children analyzed. DIVERSITY & INCLUSION STATEMENT We worked to ensure sex and gender balance in the recruitment of human participants. We actively worked to promote sex and gender balance in our author group. The author list of this paper includes contributors from the location and/or community where the research was conducted who participated in the data collection, design, analysis, and/or interpretation of the work.
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IFN- α-2b Reduces Postoperative Arthrofibrosis in Rats by Inhibiting Fibroblast Proliferation and Migration through STAT1/p21 Signaling Pathway. Mediators Inflamm 2023; 2023:1699946. [PMID: 36915717 PMCID: PMC10008118 DOI: 10.1155/2023/1699946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 11/02/2022] [Accepted: 01/25/2023] [Indexed: 03/07/2023] Open
Abstract
Objective To investigate the effect of IFN-α-2b in preventing postoperative arthrofibrosis in rats, its antiproliferation effect on fibroblasts in vitro, and its molecular mechanism. Methods The rat model of arthrofibrosis was established and treated with different concentrations of drugs. Knee specimens were collected for histological and immunohistochemical staining to observe the effect of IFN-α-2b on arthrofibrosis in rats. The biological information was further mined according to the database data, and the possible regulatory mechanism of IFN-α-2b on fibroblasts was analyzed. The inhibitory effect of IFN-α-2b on fibroblast proliferation and migration in vitro was detected by cell counting kit-8 (CCK-8), immunofluorescence analysis, cell cycle test, EdU assay, wound healing test, and Transwell method, and the analysis results were verified by Western blotting method. Results The test results of rat knee joint specimens showed that IFN-α-2b significantly inhibited the degree of fibrosis after knee joint surgery, the number of fibroblasts in the operation area was less than that of the control group, and the expression of collagen and proliferation-related proteins decreased. In vitro experimental results show that IFN-α-2b can inhibit the proliferation and migration of fibroblasts. According to the results of database analysis, it is suggested that the STAT1/P21 pathway may be involved, and it has been verified and confirmed by Western blotting and other related methods. Conclusion IFN-α-2b can reduce surgery-induced arthrofibrosis by inhibiting fibroblast proliferation and migration, which may be related to the regulation of STAT1/p21 signaling pathway.
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ITGA2 induces STING expression in pancreatic cancer by inducing DNMT1 degradation. Cell Oncol (Dordr) 2022; 45:1421-1434. [PMID: 36331797 DOI: 10.1007/s13402-022-00731-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/08/2022] [Indexed: 11/06/2022] Open
Abstract
PURPOSE Integrin alpha 2 (ITGA2, also known as CD49b or VLA-2) is the alpha subunit of a transmembrane receptor for collagens and related proteins. Previously, we found that ITGA2 may regulate immune cell infiltration in pancreatic cancer by inducing PD-L1 expression. As yet, however, whether ITGA2 regulates immune cell infiltration in pancreatic cancer by other mechanisms remains unclear. METHODS RNA sequencing was performed to identify differentially expressed genes in ITGA2-silenced pancreatic cancer cells. Protein-protein interactions were detected via co-immunoprecipitation. The infiltration level of immune cells was assessed using an immunofluorescence staining assay. RESULTS We found that ITGA2 can activate the cytosolic DNA-sensing pathway and promote STING expression in pancreatic cancer cells. In addition, we found that ITGA2 induces DNMT1 degradation by disrupting the interaction between DNMT1 and Kindlin2 in pancreatic cancer cells. As a DNA methyltransferase, we found that DNMT1 overexpression induced by ITGA2 silencing significantly up-regulated the methylation level of the STING gene promoter. Finally, ITGA2 silencing combined with DNMT1 inhibitor treatment induced immune cell infiltration in pancreatic cancer. CONCLUSION Our data indicate that ITGA2 induces STING expression by interacting with DNMT1 and inducing the degradation of DNMT1. ITGA2 silencing combined with DNMT1 inhibitor treatment may be a novel therapeutic strategy for pancreatic cancer.
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Novel Functions of Integrins as Receptors of CD154: Their Role in Inflammation and Apoptosis. Cells 2022; 11:cells11111747. [PMID: 35681441 PMCID: PMC9179867 DOI: 10.3390/cells11111747] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 05/18/2022] [Accepted: 05/24/2022] [Indexed: 12/16/2022] Open
Abstract
CD154, an inflammatory mediator also known as CD40 ligand, has been identified as a novel binding partner for some members of the integrin family. The αIIbβ3, specifically expressed on platelets, was the first integrin to be described as a receptor for CD154 after CD40. Its interaction with soluble CD154 (sCD154) highly contributes to thrombus formation and stability. Identifying αIIbβ3 opened the door for investigating other integrins as partners of CD154. The αMβ2 expressed on myeloid cells was shown capable of binding CD154 and contributing as such to cell activation, adhesion, and release of proinflammatory mediators. In parallel, α5β1 communicates with sCD154, inducing pro-inflammatory responses. Additional pathogenic effects involving apoptosis-preventing functions were exhibited by the CD154–α5β1 dyad in T cells, conferring a role for such interaction in the survival of malignant cells, as well as the persistence of autoreactive T cells. More recently, CD154 receptors integrated two new integrin members, αvβ3 and α4β1, with little known as to their biological significance in this context. This article provides an overview of the novel role of integrins as receptors of CD154 and as critical players in pro-inflammatory and apoptotic responses.
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Weisz A, Abadi U, Mausbach L, Gurwitz D, Ellis M, Ashur-Fabian O. Nuclear αvβ3 integrin expression, post translational modifications and regulation in hematological malignancies. Hematol Oncol 2021; 40:72-81. [PMID: 34534368 DOI: 10.1002/hon.2927] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 09/05/2021] [Accepted: 09/07/2021] [Indexed: 11/09/2022]
Abstract
αvβ3 integrin, a plasma membrane protein, is amply expressed on an array of tumors. We identified nuclear αvβ3 pool in ovarian cancer cells and were interested to explore this phenomenon in two rare and aggressive types of leukemia, T-cell acute lymphoblastic leukemia (T-ALL) and Mast cell leukemia (MCL) using Jurkat and HMC-1 cell lines, respectively. Moreover, we collected primary cells from patients with chronic lymphocytic leukemia (CLL, n = 11), the most common chronic adult leukemia and used human lymphoblastoid cell lines (LCL) generated from normal B cells. Nuclear αvβ3 integrin was assessed by Western blots, confocal microscopy, and the ImageStream technology which combines flow-cytometry with microscopy. We further examined post translational modifications (phosphorylation/glycosylation), nuclear trafficking regulation using inhibitors for MAPK (U0126) and PI3K (LY294002), as well as nuclear interactions by performing Co-immunoprecipitation (Co-IP). αvβ3 integrin was identified in all cell models within the nucleus and is N-glycosylated. In primary CLL cells the β3 integrin monomer is tyrosine Y759 phosphorylated, suggesting an active receptor conformation. MAPK and PI3K inhibition in Jurkat and CLL cells led to αvβ3 enhancement in the nucleus and a reduction in the membrane. The nuclear αvβ3 integrin interacts with ERK, Histone H3 and Lamin B1 in Jurkat, Histone H3 in CLL cells, but not in control LCL cells. To conclude, this observational study provides the identification of nuclear αvβ3 in hematological malignancies and lays the basis for novel cancer-relevant actions, which may be independent from the membrane functions.
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Affiliation(s)
- Avivit Weisz
- Translational Oncology Laboratory, Hematology Institute and Blood Bank, Meir Medical Center, Kfar-Saba, Israel.,Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Uri Abadi
- Translational Oncology Laboratory, Hematology Institute and Blood Bank, Meir Medical Center, Kfar-Saba, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Lisa Mausbach
- Translational Oncology Laboratory, Hematology Institute and Blood Bank, Meir Medical Center, Kfar-Saba, Israel
| | - David Gurwitz
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
| | - Martin Ellis
- Translational Oncology Laboratory, Hematology Institute and Blood Bank, Meir Medical Center, Kfar-Saba, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Osnat Ashur-Fabian
- Translational Oncology Laboratory, Hematology Institute and Blood Bank, Meir Medical Center, Kfar-Saba, Israel.,Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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Simioni C, Conti I, Varano G, Brenna C, Costanzi E, Neri LM. The Complexity of the Tumor Microenvironment and Its Role in Acute Lymphoblastic Leukemia: Implications for Therapies. Front Oncol 2021; 11:673506. [PMID: 34026651 PMCID: PMC8131840 DOI: 10.3389/fonc.2021.673506] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Accepted: 03/30/2021] [Indexed: 12/15/2022] Open
Abstract
The microenvironment that surrounds a tumor, in addition to the tumor itself, plays an important role in the onset of resistance to molecularly targeted therapies. Cancer cells and their microenvironment interact closely between them by means of a molecular communication that mutually influences their biological characteristics and behavior. Leukemia cells regulate the recruitment, activation and program of the cells of the surrounding microenvironment, including those of the immune system. Studies on the interactions between the bone marrow (BM) microenvironment and Acute Lymphoblastic Leukemia (ALL) cells have opened a scenario of potential therapeutic targets which include cytokines and their receptors, signal transduction networks, and hypoxia-related proteins. Hypoxia also enhances the formation of new blood vessels, and several studies show how angiogenesis could have a key role in the pathogenesis of ALL. Knowledge of the molecular mechanisms underlying tumor-microenvironment communication and angiogenesis could contribute to the early diagnosis of leukemia and to personalized molecular therapies. This article is part of a Special Issue entitled: Innovative Multi-Disciplinary Approaches for Precision Studies in Leukemia edited by Sandra Marmiroli (University of Modena and Reggio Emilia, Modena, Italy) and Xu Huang (University of Glasgow, Glasgow, United Kingdom).
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Affiliation(s)
- Carolina Simioni
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy.,Laboratory for Technologies of Advanced Therapies (LTTA) - Electron Microscopy Center, University of Ferrara, Ferrara, Italy
| | - Ilaria Conti
- Department of Translational Medicine, University of Ferrara, Ferrara, Italy
| | - Gabriele Varano
- Department of Translational Medicine, University of Ferrara, Ferrara, Italy
| | - Cinzia Brenna
- Department of Translational Medicine, University of Ferrara, Ferrara, Italy
| | - Eva Costanzi
- Department of Translational Medicine, University of Ferrara, Ferrara, Italy
| | - Luca M Neri
- Laboratory for Technologies of Advanced Therapies (LTTA) - Electron Microscopy Center, University of Ferrara, Ferrara, Italy.,Department of Translational Medicine, University of Ferrara, Ferrara, Italy
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Awan T, Babendreyer A, Mahmood Alvi A, Düsterhöft S, Lambertz D, Bartsch JW, Liedtke C, Ludwig A. Expression levels of the metalloproteinase ADAM8 critically regulate proliferation, migration and malignant signalling events in hepatoma cells. J Cell Mol Med 2021; 25:1982-1999. [PMID: 33314720 PMCID: PMC7882935 DOI: 10.1111/jcmm.16015] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 10/01/2020] [Accepted: 10/05/2020] [Indexed: 12/14/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is one of the most common metastatic tumours. Tumour growth and metastasis depend on the induction of cell proliferation and migration by various mediators. Here, we report that the A Disintegrin and Metalloproteinase (ADAM) 8 is highly expressed in murine HCC tissues as well as in murine and human hepatoma cell lines Hepa1-6 and HepG2, respectively. To establish a dose-dependent role of different ADAM8 expression levels for HCC progression, ADAM8 expression was either reduced via shRNA- or siRNA-mediated knockdown or increased by using a retroviral overexpression vector. These two complementary approaches revealed that ADAM8 expression levels correlated positively with proliferation, clonogenicity, migration and matrix invasion and negatively with apoptosis of hepatoma cells. Furthermore, the analysis of pro-migratory and proliferative signalling pathways revealed that ADAM8 expression level was positively associated with expression of β1 integrin as well as with the activation of focal adhesion kinase (FAK), mitogen-activated protein kinase (MAPK), Src kinase and Rho A GTPase. Finally, up-regulation of promigatory signalling and cell migration was also seen with a proteolytically inactive ADAM8 mutant. These findings reveal that ADAM8 is critically up-regulated in hepatoma cells contributes to cell proliferation and survival and furthermore induces pro-migratory signalling pathways independently of its proteolytic activity. By this, ADAM8 can promote cell functions most relevant for HCC growth and metastasis.
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Affiliation(s)
- Tanzeela Awan
- Institute of Molecular PharmacologyRWTH Aachen UniversityAachenGermany
| | - Aaron Babendreyer
- Institute of Molecular PharmacologyRWTH Aachen UniversityAachenGermany
| | - Abid Mahmood Alvi
- Institute of Molecular PharmacologyRWTH Aachen UniversityAachenGermany
| | - Stefan Düsterhöft
- Institute of Molecular PharmacologyRWTH Aachen UniversityAachenGermany
| | - Daniela Lambertz
- Department of Medicine IIIUniversity Hospital RWTH Aachen UniversityAachenGermany
| | - Jörg W. Bartsch
- Department of NeurosurgeryPhilipps University MarburgUniversity Hospital MarburgMarburgGermany
| | - Christian Liedtke
- Department of Medicine IIIUniversity Hospital RWTH Aachen UniversityAachenGermany
| | - Andreas Ludwig
- Institute of Molecular PharmacologyRWTH Aachen UniversityAachenGermany
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Li L, Wei JR, Dong J, Lin QG, Tang H, Jia YX, Tan W, Chen QY, Zeng TT, Xing S, Qin YR, Zhu YH, Li Y, Guan XY. Laminin γ2-mediating T cell exclusion attenuates response to anti-PD-1 therapy. SCIENCE ADVANCES 2021; 7:7/6/eabc8346. [PMID: 33536206 PMCID: PMC7857690 DOI: 10.1126/sciadv.abc8346] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Accepted: 12/17/2020] [Indexed: 05/10/2023]
Abstract
PD-1/PD-L1 blockade therapies provide notable clinical benefits for patients with advanced cancers, but the factors influencing the effectiveness of the treatment remain incompletely cataloged. Here, the up-regulation of laminin γ2 (Ln-γ2) predicted the attenuated efficacy of anti-PD-1 drugs and was associated with unfavorable outcomes in patients with lung cancer or esophageal cancer. Furthermore, Ln-γ2 was transcriptionally activated by transforming growth factor-β1 (TGF-β1) secreted from cancer-associated fibroblasts via JNK/AP1 signaling, which blocked T cell infiltration into the tumor nests by altering the expression of T cell receptors. Coadministration of the TGF-β receptor inhibitor galunisertib and chemotherapy drugs provoked vigorous antitumor activity of anti-PD-1 therapy in mouse tumor models. Therefore, Ln-γ2 may represent a useful biomarker to optimize clinical decisions and predict the response of cancer patients to treatment with anti-PD-1 drugs.
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Affiliation(s)
- Lei Li
- State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, China.
- Department of Clinical Oncology, The University of Hong Kong, Hong Kong 00852, China
- Department of Clinical Oncology Center, The University of Hongkong-Shenzhen Hospital, Shenzhen 518058, China
| | - Jia-Ru Wei
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
| | - Jun Dong
- State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Qing-Guang Lin
- State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Hong Tang
- Department of Internal Medicine, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou 450008, China
| | - Yong-Xu Jia
- Department of Clinical Oncology, The First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China
| | - Wanlin Tan
- State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Qing-Yun Chen
- State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Ting-Ting Zeng
- State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Shan Xing
- State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Yan-Ru Qin
- Department of Clinical Oncology, The First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China
| | - Ying-Hui Zhu
- State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Yan Li
- State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Xin-Yuan Guan
- State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, China.
- Department of Clinical Oncology, The University of Hong Kong, Hong Kong 00852, China
- Department of Clinical Oncology Center, The University of Hongkong-Shenzhen Hospital, Shenzhen 518058, China
- Department of Clinical Oncology, The First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China
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10
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Lambrou GI, Adamaki M, Hatziagapiou K, Vlahopoulos S. Gene Expression and Resistance to Glucocorticoid-Induced Apoptosis in Acute Lymphoblastic Leukemia: A Brief Review and Update. Curr Drug Res Rev 2021; 12:131-149. [PMID: 32077838 DOI: 10.2174/2589977512666200220122650] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 12/29/2019] [Accepted: 01/23/2020] [Indexed: 01/18/2023]
Abstract
BACKGROUND Resistance to glucocorticoid (GC)-induced apoptosis in Acute Lymphoblastic Leukemia (ALL), is considered one of the major prognostic factors for the disease. Prednisolone is a corticosteroid and one of the most important agents in the treatment of acute lymphoblastic leukemia. The mechanics of GC resistance are largely unknown and intense ongoing research focuses on this topic. AIM The aim of the present study is to review some aspects of GC resistance in ALL, and in particular of Prednisolone, with emphasis on previous and present knowledge on gene expression and signaling pathways playing a role in the phenomenon. METHODS An electronic literature search was conducted by the authors from 1994 to June 2019. Original articles and systematic reviews selected, and the titles and abstracts of papers screened to determine whether they met the eligibility criteria, and full texts of the selected articles were retrieved. RESULTS Identification of gene targets responsible for glucocorticoid resistance may allow discovery of drugs, which in combination with glucocorticoids may increase the effectiveness of anti-leukemia therapies. The inherent plasticity of clinically evolving cancer justifies approaches to characterize and prevent undesirable activation of early oncogenic pathways. CONCLUSION Study of the pattern of intracellular signal pathway activation by anticancer drugs can lead to development of efficient treatment strategies by reducing detrimental secondary effects.
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Affiliation(s)
- George I Lambrou
- First Department of Pediatrics, National and Kapodistrian University of Athens, Choremeio Research Laboratory, Athens, Greece
| | - Maria Adamaki
- First Department of Pediatrics, National and Kapodistrian University of Athens, Choremeio Research Laboratory, Athens, Greece
| | - Kyriaki Hatziagapiou
- First Department of Pediatrics, National and Kapodistrian University of Athens, Choremeio Research Laboratory, Athens, Greece
| | - Spiros Vlahopoulos
- First Department of Pediatrics, National and Kapodistrian University of Athens, Choremeio Research Laboratory, Athens, Greece
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11
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Liu C, Leon-Plata P, Zaroudi M, Dusza M, Lee CY, Liu Y. Heterogeneous Polymeric Particles Encapsulating Human T cells for Controlled Activation, Proliferation, and Delivery. ACS APPLIED BIO MATERIALS 2020; 3:7357-7362. [PMID: 35019477 DOI: 10.1021/acsabm.0c00992] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report a particulate cell delivery platform, toroidal spiral particles (TSPs), for continuous cell activation, expansion, and local sustained release. Biocompatible TSPs, generated by a self-assembly process of polymeric droplet sedimentation in an aqueous solution and subsequent polymer solidification, possess many engineering design flexibilities to manipulate the microenvironment of the cells to control cell proliferation, migration, and release kinetics. These millimeter-size particles with desired mechanical and physicochemical properties may be potentially used for adoptive cellular therapy (ACT) delivery by a minimally invasive procedure to the tumor mass.
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12
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Co-operation of ABT-199 and gemcitabine in impeding DNA damage repair and inducing cell apoptosis for synergistic therapy of T-cell acute lymphoblastic leukemia. Anticancer Drugs 2020; 30:138-148. [PMID: 30320607 DOI: 10.1097/cad.0000000000000702] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
T-cell acute lymphoblastic leukemia (T-ALL) is a high-risk subtype of acute lymphoblastic leukemia with limited therapeutic options available. Here, we evaluated the therapeutic potential of the combination of the Bcl-2 antagonist ABT-199 and cytotoxic agent gemcitabine in T-ALL cell lines. Our results showed that the combination of ABT-199 and gemcitabine exhibited synergistic cytotoxicity and induced significant apoptosis in human T-ALL cell lines (Jurkat and Molt4). The augmented apoptosis induced by combination treatment was accompanied by the greater extent of mitochondrial depolarization and enhanced DNA damage. Importantly, single agent induced DNA damage alone but did not inhibit RAD51/BRCA1-mediated repair for DNA double-strand breaks. In contrast, the combination of ABT-199 and gemcitabine disrupted RAD51/BRCA1-dependent DNA repair and remarkably activated caspase-3 and PARP to trigger apoptosis. Moreover, ABT-199 exerted an antagonistic action towards Bcl-2 and Bcl-xL, but to a certain extent moderately increased Mcl-1 level that could be compromised by gemcitabine. In conclusion, our study showed that the combination of ABT-199 and gemcitabine exhibited synergistic cytotoxicity in T-ALL cells by cooperatively targeting DNA damage repair pathway and Bcl-2 family proteins.
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13
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Floren M, Restrepo Cruz S, Termini CM, Marjon KD, Lidke KA, Gillette JM. Tetraspanin CD82 drives acute myeloid leukemia chemoresistance by modulating protein kinase C alpha and β1 integrin activation. Oncogene 2020; 39:3910-3925. [PMID: 32203165 PMCID: PMC7210072 DOI: 10.1038/s41388-020-1261-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 03/03/2020] [Accepted: 03/05/2020] [Indexed: 02/07/2023]
Abstract
A principal challenge in treating acute myeloid leukemia (AML) is chemotherapy refractory disease. As such, there remains a critical need to identify key regulators of chemotherapy resistance in AML. In this study, we demonstrate that the membrane scaffold, CD82, contributes to the chemoresistant phenotype of AML. Using an RNA-seq approach, we identified the increased expression of the tetraspanin family member, CD82, in response to the chemotherapeutic, daunorubicin. Analysis of the TARGET and BEAT AML databases identifies a correlation between CD82 expression and overall survival of AML patients. Moreover, using a combination of cell lines and patient samples, we find that CD82 overexpression results in significantly reduced cell death in response to chemotherapy. Investigation of the mechanism by which CD82 promotes AML survival in response to chemotherapy identified a crucial role for enhanced protein kinase c alpha (PKCα) signaling and downstream activation of the β1 integrin. In addition, analysis of β1 integrin clustering by super-resolution imaging demonstrates that CD82 expression promotes the formation of dense β1 integrin membrane clusters. Lastly, evaluation of survival signaling following daunorubicin treatment identified robust activation of p38 mitogen-activated protein kinase (MAPK) downstream of PKCα and β1 integrin signaling when CD82 is overexpressed. Together, these data propose a mechanism where CD82 promotes chemoresistance by increasing PKCα activation and downstream activation/clustering of β1 integrin, leading to AML cell survival via activation of p38 MAPK. These observations suggest that the CD82-PKCα signaling axis may be a potential therapeutic target for attenuating chemoresistance signaling in AML.
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Affiliation(s)
- Muskan Floren
- Department of Pathology, University of New Mexico Health Sciences Center, Albuquerque, NM, USA
| | - Sebastian Restrepo Cruz
- Department of Pathology, University of New Mexico Health Sciences Center, Albuquerque, NM, USA
| | - Christina M Termini
- Department of Pathology, University of New Mexico Health Sciences Center, Albuquerque, NM, USA
| | - Kristopher D Marjon
- Department of Pathology, University of New Mexico Health Sciences Center, Albuquerque, NM, USA
| | - Keith A Lidke
- Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM, USA
- University of New Mexico Comprehensive Cancer Center, Albuquerque, NM, 87131, USA
| | - Jennifer M Gillette
- Department of Pathology, University of New Mexico Health Sciences Center, Albuquerque, NM, USA.
- University of New Mexico Comprehensive Cancer Center, Albuquerque, NM, 87131, USA.
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14
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Naci D, Berrazouane S, Barabé F, Aoudjit F. Cell adhesion to collagen promotes leukemia resistance to doxorubicin by reducing DNA damage through the inhibition of Rac1 activation. Sci Rep 2019; 9:19455. [PMID: 31857649 PMCID: PMC6923425 DOI: 10.1038/s41598-019-55934-w] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 12/04/2019] [Indexed: 01/13/2023] Open
Abstract
Chemoresistance is a major hurdle in anti-cancer therapy. Growing evidence indicates that integrin-mediated cell adhesion to extracellular matrix plays a major role in chemoresistance. However, the underlying mechanisms are not fully understood. We have previously shown that the collagen-binding integrin α2β1 promoted doxorubicin resistance in acute T cell lymphoblastic leukemia (T-ALL). In this study, we found that acute myeloid leukemia (AML) cell lines also express α2β1 integrin and collagen promoted their chemoresistance as well. Furthermore, we found that high levels of α2 integrin correlate with worse overall survival in AML. Our results showed that doxorubicin-induced apoptosis in leukemic cells is associated with activation of Ras-related C3 botulinum toxin substrate 1 (Rac1) and that collagen inhibited this pathway. The protective effect of collagen is associated with the inhibition of Rac1-induced DNA damage as evaluated by the comet assay and the phosphorylated levels of histone H2AX (γ-H2AX). Together these results show that by inhibiting pro-apoptotic Rac1, α2β1 integrin can be a major pathway protecting leukemic cells from genotoxic agents and may thus represent an important therapeutic target in anti-cancer treatment.
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Affiliation(s)
- Dalila Naci
- Centre de recherche du CHU de Québec-Université Laval, Axe des maladies infectieuses et immunitaires, Québec, Canada.,The Hospital for Sick Children, University of Toronto, Toronto, Canada
| | - Sofiane Berrazouane
- Centre de recherche du CHU de Québec-Université Laval, Axe des maladies infectieuses et immunitaires, Québec, Canada
| | - Frédéric Barabé
- Centre de recherche du CHU de Québec-Université Laval, Axe des maladies infectieuses et immunitaires, Québec, Canada.,Département de Médicine, Faculté de Médecine, Université Laval, Québec, Canada
| | - Fawzi Aoudjit
- Centre de recherche du CHU de Québec-Université Laval, Axe des maladies infectieuses et immunitaires, Québec, Canada. .,Département de Microbiologie-infectiologie et Immunologie, Faculté de Médecine, Université Laval, Québec, Canada.
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15
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Dang Q, Chen L, Xu M, You X, Zhou H, Zhang Y, Shi W. The γ-secretase inhibitor GSI-I interacts synergistically with the proteasome inhibitor bortezomib to induce ALK+ anaplastic large cell lymphoma cell apoptosis. Cell Signal 2019; 59:76-84. [PMID: 30878517 DOI: 10.1016/j.cellsig.2019.03.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 03/11/2019] [Accepted: 03/12/2019] [Indexed: 12/21/2022]
Abstract
Single agent treatment of the γ-secretase inhibitor (GSI-I) or proteasome inhibitor in anaplastic lymphoma kinase positive anaplastic large cell lymphoma (ALK+ ALCL) shows limited response and considerable toxicity. Here, we examined the effects of the combination of low dose GSI-I and the proteasome inhibitor bortezomib (BTZ) in ALK+ ALCL cells in vivo and in vitro. We found that ALK+ ALCL cells treated with the BTZ and GSI-I combination treatment showed elevated apoptosis, consistent with increased caspase activation, compared with BTZ or GSI-I alone. The combination treatment also inhibited AKT and extracellular signal-related kinase pathways, as well as stress-related cascades, including the c-jun N-terminal kinase and stress-activated kinases. Moreover, combined treatment in a murine xenograft model resulted in increased apoptosis in tumor tissues and reduced tumor growth. Our results reveal the synergistic anti-tumor effects of low dose inhibitors against γ-secretase and the proteasome and suggest the potential application of the tolerable BTZ/GSI-I combined agents in treating ALK+ ALCL in future clinical treatment.
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Affiliation(s)
- Qingxiu Dang
- Department of Hematology, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu, China
| | - Lili Chen
- Department of Hematology, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu, China
| | - Mengqi Xu
- Department of Hematology, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu, China
| | - Xuefen You
- Department of Hematology, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu, China
| | - Hong Zhou
- Department of Hematology, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu, China
| | - Yaping Zhang
- Department of Hematology, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu, China.
| | - Wenyu Shi
- Department of Hematology, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu, China.
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16
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Tao Y, Zhang H, Huang S, Pei L, Feng M, Zhao X, Ouyang Z, Yao S, Jiang R, Wei K. miR-199a-3p promotes cardiomyocyte proliferation by inhibiting Cd151 expression. Biochem Biophys Res Commun 2019; 516:28-36. [PMID: 31186138 DOI: 10.1016/j.bbrc.2019.05.174] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 05/30/2019] [Indexed: 11/16/2022]
Abstract
Adult mammalian cardiomyocytes have extremely limited capacity to regenerate, and it is believed that a strong intrinsic mechanism is prohibiting the cardiomyocytes from entering the cell cycle. microRNAs that promote proliferation in cardiomyocyte can be used as probes to identify novel genes suppressing cardiomyocytes proliferation, thus dissecting the mechanism(s) preventing cardiomyocytes from duplication. In particular, miR-199a-3p has been found as a potent activator of proliferation in rodent cardiomyocyte, although its molecular targets remain elusive. Here, we identified Cd151 as a direct target of miR-199a-3p, and its expression is greatly suppressed by miR-199a-3p. Cd151 gain-of-function reduced cardiomyocyte proliferation, conversely Cd151 loss-of-function increased cardiomyocytes proliferation. Overexpression of Cd151 blocks the activating effect of miR-199a-3p on cardiomyocyte proliferation, suggesting Cd151 is a functional target of miR-199a-3p in cardiomyocytes. Mechanistically, we found that Cd151 induces p38 expression, a known negative regulator of cardiomyocyte proliferation, and pharmacological inhibition of p38 rescued the inhibitory effect of Cd151 on proliferation. Together, this work proposes Cd151 as a novel suppressor of cardiomyocyte proliferation, which may provide a new molecular target for developing therapies to promote cardiac regeneration.
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Affiliation(s)
- Ying Tao
- Institute for Regenerative Medicine, Shanghai East Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Science and Technology, Tongji University, Shanghai 200092, China
| | - Hongjie Zhang
- Institute for Regenerative Medicine, Shanghai East Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Science and Technology, Tongji University, Shanghai 200092, China
| | - Shiqi Huang
- Institute for Regenerative Medicine, Shanghai East Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Science and Technology, Tongji University, Shanghai 200092, China
| | - Lijuan Pei
- Institute for Regenerative Medicine, Shanghai East Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Science and Technology, Tongji University, Shanghai 200092, China
| | - Mengying Feng
- Institute for Regenerative Medicine, Shanghai East Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Science and Technology, Tongji University, Shanghai 200092, China
| | - Xiaodong Zhao
- Institute for Regenerative Medicine, Shanghai East Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Science and Technology, Tongji University, Shanghai 200092, China
| | - Zhaohui Ouyang
- Institute for Regenerative Medicine, Shanghai East Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Science and Technology, Tongji University, Shanghai 200092, China
| | - Su Yao
- Institute for Regenerative Medicine, Shanghai East Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Science and Technology, Tongji University, Shanghai 200092, China
| | - Rui Jiang
- Institute for Regenerative Medicine, Shanghai East Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Science and Technology, Tongji University, Shanghai 200092, China
| | - Ke Wei
- Institute for Regenerative Medicine, Shanghai East Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Science and Technology, Tongji University, Shanghai 200092, China.
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17
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Peláez R, Pariente A, Pérez-Sala Á, Larrayoz IM. Integrins: Moonlighting Proteins in Invadosome Formation. Cancers (Basel) 2019; 11:cancers11050615. [PMID: 31052560 PMCID: PMC6562994 DOI: 10.3390/cancers11050615] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 04/26/2019] [Accepted: 04/28/2019] [Indexed: 12/24/2022] Open
Abstract
Invadopodia are actin-rich protrusions developed by transformed cells in 2D/3D environments that are implicated in extracellular matrix (ECM) remodeling and degradation. These structures have an undoubted association with cancer invasion and metastasis because invadopodium formation in vivo is a key step for intra/extravasation of tumor cells. Invadopodia are closely related to other actin-rich structures known as podosomes, which are typical structures of normal cells necessary for different physiological processes during development and organogenesis. Invadopodia and podosomes are included in the general term 'invadosomes,' as they both appear as actin puncta on plasma membranes next to extracellular matrix metalloproteinases, although organization, regulation, and function are slightly different. Integrins are transmembrane proteins implicated in cell-cell and cell-matrix interactions and other important processes such as molecular signaling, mechano-transduction, and cell functions, e.g., adhesion, migration, or invasion. It is noteworthy that integrin expression is altered in many tumors, and other pathologies such as cardiovascular or immune dysfunctions. Over the last few years, growing evidence has suggested a role of integrins in the formation of invadopodia. However, their implication in invadopodia formation and adhesion to the ECM is still not well known. This review focuses on the role of integrins in invadopodium formation and provides a general overview of the involvement of these proteins in the mechanisms of metastasis, taking into account classic research through to the latest and most advanced work in the field.
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Affiliation(s)
- Rafael Peláez
- Biomarkers and Molecular Signaling Group, Neurodegenerative Diseases Area Center for Biomedical Research of La Rioja, CIBIR, c.p., 26006. Logroño, Spain.
| | - Ana Pariente
- Biomarkers and Molecular Signaling Group, Neurodegenerative Diseases Area Center for Biomedical Research of La Rioja, CIBIR, c.p., 26006. Logroño, Spain.
| | - Álvaro Pérez-Sala
- Biomarkers and Molecular Signaling Group, Neurodegenerative Diseases Area Center for Biomedical Research of La Rioja, CIBIR, c.p., 26006. Logroño, Spain.
| | - Ignacio M Larrayoz
- Biomarkers and Molecular Signaling Group, Neurodegenerative Diseases Area Center for Biomedical Research of La Rioja, CIBIR, c.p., 26006. Logroño, Spain.
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18
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Beta1 integrin blockade overcomes doxorubicin resistance in human T-cell acute lymphoblastic leukemia. Cell Death Dis 2019; 10:357. [PMID: 31043590 PMCID: PMC6494825 DOI: 10.1038/s41419-019-1593-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 04/09/2019] [Accepted: 04/12/2019] [Indexed: 02/06/2023]
Abstract
Growing evidence indicates that cell adhesion to extracellular matrix (ECM) plays an important role in cancer chemoresistance. Leukemic T cells express several adhesion receptors of the β1 integrin subfamily with which they interact with ECM. However, the role of β1 integrins in chemoresistance of T-cell acute lymphoblastic leukemia (T-ALL) is still ill defined. In this study, we demonstrate that interactions of human T-ALL cell lines and primary blasts with three-dimensional matrices including Matrigel and collagen type I gel promote their resistance to doxorubicin via β1 integrin. The blockade of β1 integrin with a specific neutralizing antibody sensitized xenografted CEM leukemic cells to doxorubicin, diminished the leukemic burden in the bone marrow and resulted in the extension of animal survival. Mechanistically, Matrigel/β1 integrin interaction enhanced T-ALL chemoresistance by promoting doxorubicin efflux through the activation of the ABCC1 drug transporter. Finally, our findings showed that Matrigel/β1 interaction enhanced doxorubicin efflux and chemoresistance by activating the FAK-related proline-rich tyrosine kinase 2 (PYK2) as both PYK2 inhibitor and siRNA diminished the effect of Matrigel. Collectively, these results support the role of β1 integrin in T-ALL chemoresistance and suggest that the β1 integrin pathway can constitute a therapeutic target to avoid chemoresistance and relapsed-disease in human T-ALL.
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19
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Wang Z, Li C, Xing R, Shao Y, Zhao X, Zhang W, Guo M. β-Integrin mediates LPS-induced coelomocyte apoptosis in sea cucumber Apostichopus japonicus via the integrin/FAK/caspase-3 signaling pathway. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2019; 91:26-36. [PMID: 30339873 DOI: 10.1016/j.dci.2018.10.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 10/13/2018] [Accepted: 10/15/2018] [Indexed: 06/08/2023]
Abstract
Lipopolysaccharides (LPS) can induce the apoptosis of coelomocytes in Apostichopus japonicus (A. japonicus), and β-integrin serves as an apoptotic inhibitor during this process. However, the underlying mechanism in invertebrates is largely unknown. Integrin/focal adhesion kinase (FAK) signaling pathway modulates the apoptosis in vertebrates. In this study, a novel FAK was identified from A. japonicus (designated as AjFAK) by β-integrin (designated as AjITGB) -mediated GST-pull down assay. This interaction was further validated in the LPS-exposed coelomocytes through co-immunoprecipitation and immunofluorescence analyses. To investigate the functional role of AjFAK in AjITGB-mediated coelomocyte apoptosis, we cloned the full-length cDNA of AjFAK and characterized its relationship with AjITGB through real-time PCR. The mRNA expression levels of AjFAK exhibited consistent expression patterns with those of AjITGB in our previous work with 0.48- and 0.22-fold decreases at 12 and 96 h in LPS-exposed coelomocytes and in Vibrio splendidus challenged sea cucumber, respectively. Moreover, the expression level of AjFAK decreased to 0.35-fold in AjITGB knockdown treatment by specific small interference RNA (siRNA). We further performed an assay for the apoptotic rate of coelomocytes in AjITGB, AjFAK, and AjITGB/AjFAK silencing conditions and found that their apoptotic percentages increased to 26%, 25%, and 30%, respectively, compared with those of the control. Finally, the expression levels of four caspases from A. japonicus were also investigated to determine the apoptotic effector. After AjITGB or AjFAK was silenced, the mRNA levels of caspase-3 were 6.6-fold and 2.5-fold higher than those of the control, respectively. In addition, the enzymatic activity of caspase-3 was enhanced to 1.82- and 1.79-fold that of the control in the two groups. However, no significant changes were detected in caspase-2/6/8. All our results supported that β-integrin mediated the LPS-induced coelomocyte apoptosis in sea cucumber via the integrin/FAK/caspase-3 signaling pathway.
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Affiliation(s)
- Zhenhui Wang
- School of Marine Sciences, Ningbo University, Ningbo, Zhejiang Province, 315211, PR China
| | - Chenghua Li
- School of Marine Sciences, Ningbo University, Ningbo, Zhejiang Province, 315211, PR China; College of Life Sciences, Yantai University, Yantai, 264005, PR China.
| | - Ronglian Xing
- College of Life Sciences, Yantai University, Yantai, 264005, PR China
| | - Yina Shao
- School of Marine Sciences, Ningbo University, Ningbo, Zhejiang Province, 315211, PR China
| | - Xuelin Zhao
- School of Marine Sciences, Ningbo University, Ningbo, Zhejiang Province, 315211, PR China
| | - Weiwei Zhang
- School of Marine Sciences, Ningbo University, Ningbo, Zhejiang Province, 315211, PR China
| | - Ming Guo
- School of Marine Sciences, Ningbo University, Ningbo, Zhejiang Province, 315211, PR China
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20
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Adorno-Cruz V, Liu H. Regulation and functions of integrin α2 in cell adhesion and disease. Genes Dis 2018; 6:16-24. [PMID: 30906828 PMCID: PMC6411621 DOI: 10.1016/j.gendis.2018.12.003] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Accepted: 12/24/2018] [Indexed: 12/23/2022] Open
Abstract
Integrins are cell adhesion molecules that are composed of an alpha (α) subunit and a beta (β) subunit with affinity for different extracellular membrane components. The integrin family includes 24 known members that actively regulate cellular growth, differentiation, and apoptosis. Each integrin heterodimer has a particular function in defined contexts as well as some partially overlapping features with other members in the family. As many reviews have covered the general integrin family in molecular and cellular studies in life science, this review will focus on the specific regulation, function, and signaling of integrin α2 subunit (CD49b, VLA-2; encoded by the gene ITGA2) in partnership with β1 (CD29) subunit in normal and cancer cells. Its roles in cell adhesion, cell motility, angiogenesis, stemness, and immune/blood cell regulations are discussed. The pivotal role of integrin α2 in many diseases such as cancer suggests its potential to be used as a novel therapeutic target.
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Affiliation(s)
- Valery Adorno-Cruz
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA.,Department of Pharmacology Graduate Program, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Huiping Liu
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA.,Department of Medicine, Hematology/Oncology Division, Northwestern University, Chicago, IL 60611, USA.,Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA.,Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
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21
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Abderrazak A, El Azreq MA, Naci D, Fortin PR, Aoudjit F. Alpha2beta1 Integrin (VLA-2) Protects Activated Human Effector T Cells From Methotrexate-Induced Apoptosis. Front Immunol 2018; 9:2269. [PMID: 30374344 PMCID: PMC6197073 DOI: 10.3389/fimmu.2018.02269] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 09/12/2018] [Indexed: 01/18/2023] Open
Abstract
β1 integrins are critical for T cell migration, survival and costimulation. The integrin α2β1, which is a receptor for collagen, also named VLA-2, is a major costimulatory pathway of effector T cells and has been implicated in arthritis pathogenesis. Herein, we have examined its ability to promote methotrexate (MTX) resistance by enhancing effector T cells survival. Our results show that attachment of anti-CD3-activated human polarized Th17 cells to collagen but not to fibronectin or laminin led to a significant reduction of MTX-induced apoptosis. The anti-CD3+collagen-rescued cells still produce significant amounts of IL-17 and IFNγ upon their reactivation indicating that their inflammatory nature is preserved. Mechanistically, we found that the prosurvival role of anti-CD3+collagen involves activation of the MTX transporter ABCC1 (ATP Binding Cassette subfamily C Member 1). Finally, the protective effect of collagen/α2β1 integrin on MTX-induced apoptosis also occurs in memory CD4+ T cells isolated from rheumatoid arthritis (RA) patients suggesting its clinical relevance. Together these results show that α2β1 integrin promotes MTX resistance of effector T cells, and suggest that it could contribute to the development of MTX resistance that is seen in RA.
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Affiliation(s)
- Amna Abderrazak
- Axe de Recherche sur les Maladies Infectieuses et Immunitaires, Centre de Recherche du CHU De Québec-Université Laval, Québec, QC, Canada
| | - Mohammed-Amine El Azreq
- Axe de Recherche sur les Maladies Infectieuses et Immunitaires, Centre de Recherche du CHU De Québec-Université Laval, Québec, QC, Canada
| | - Dalila Naci
- Axe de Recherche sur les Maladies Infectieuses et Immunitaires, Centre de Recherche du CHU De Québec-Université Laval, Québec, QC, Canada
| | - Paul R Fortin
- Axe de Recherche sur les Maladies Infectieuses et Immunitaires, Centre de Recherche du CHU De Québec-Université Laval, Québec, QC, Canada.,Division de Rhumatologie, Département de Médecine, Faculté de Médecine, Université Laval, Québec, QC, Canada
| | - Fawzi Aoudjit
- Axe de Recherche sur les Maladies Infectieuses et Immunitaires, Centre de Recherche du CHU De Québec-Université Laval, Québec, QC, Canada.,Département de Microbiologie-Infectiologie et D'immunologie, Faculté de Médecine, Université Laval, Québec, QC, Canada
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22
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Zhang J, Mo HQ, Tian FJ, Zeng WH, Liu XR, Ma XL, Li X, Qin S, Fan CF, Lin Y. EIF5A1 promotes trophoblast migration and invasion via ARAF-mediated activation of the integrin/ERK signaling pathway. Cell Death Dis 2018; 9:926. [PMID: 30206208 PMCID: PMC6134074 DOI: 10.1038/s41419-018-0971-5] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 08/03/2018] [Accepted: 08/20/2018] [Indexed: 12/17/2022]
Abstract
Trophoblast dysfunction is one mechanism implicated in the etiology of recurrent miscarriage (RM). Regulation of trophoblast function, however, is complex and the mechanisms contributing to dysregulation remain to be elucidated. Herein, we found EIF5A1 expression levels to be significantly decreased in cytotrophoblasts in RM villous tissues compared with healthy controls. Using the HTR-8/SVneo cell line as a model system, we found that overexpression of EIF5A1 promotes trophoblast proliferation, migration and invasion in vitro. Knockdown of EIF5A1 or inhibiting its hypusination with N1-guanyl-1,7-diaminoheptane (GC7) suppresses these activities. Similarly, mutating EIF5A1 to EIF5A1K50A to prevent hypusination abolishes its effects on proliferation, migration and invasion. Furthermore, upregulation of EIF5A1 increases the outgrowth of trophoblasts in a villous explant culture model, whereas knockdown has the opposite effect. Suppression of EIF5A1 hypusination also inhibits the outgrowth of trophoblasts in explants. Mechanistically, ARAF mediates the regulation of trophoblast migration and invasion by EIF5A1. Hypusinated EIF5A1 regulates the integrin/ERK signaling pathway via controlling the translation of ARAF. ARAF level is also downregulated in trophoblasts of RM villous tissues and expression of ARAF is positively correlated with EIF5A1. Together, our results suggest that EIF5A1 may be a regulator of trophoblast function at the maternal-fetal interface and low levels of EIF5A1 and ARAF may be associated with RM.
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Affiliation(s)
- Jing Zhang
- International Peace Maternity & Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P. R. China
- Institute of Embryo-Fetal Original Adult Disease Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China
| | - Hui-Qin Mo
- International Peace Maternity & Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P. R. China
- Institute of Embryo-Fetal Original Adult Disease Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China
| | - Fu-Ju Tian
- International Peace Maternity & Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P. R. China
- Institute of Embryo-Fetal Original Adult Disease Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China
| | - Wei-Hong Zeng
- International Peace Maternity & Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P. R. China
- Institute of Embryo-Fetal Original Adult Disease Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China
| | - Xiao-Rui Liu
- International Peace Maternity & Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P. R. China
- Institute of Embryo-Fetal Original Adult Disease Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China
| | - Xiao-Ling Ma
- International Peace Maternity & Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P. R. China
- Institute of Embryo-Fetal Original Adult Disease Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China
| | - Xiao Li
- International Peace Maternity & Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P. R. China
- Institute of Embryo-Fetal Original Adult Disease Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China
| | - Shi Qin
- International Peace Maternity & Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P. R. China
- Institute of Embryo-Fetal Original Adult Disease Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China
| | - Cui-Fang Fan
- Department of Obstetrics and Gynecology, Renmin Hospital of Wuhan University, Wuhan, P. R. China
| | - Yi Lin
- International Peace Maternity & Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P. R. China.
- Institute of Embryo-Fetal Original Adult Disease Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China.
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23
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Li YQ, Chen JT, Yin SM, Nie DN, He ZY, Xie SF, Wang XJ, Wu YD, Xiao J, Liu HY, Wang JY, Yang WJ, Ma LP. Regulation of mPGES-1 composition and cell growth via the MAPK signaling pathway in jurkat cells. Exp Ther Med 2018; 16:3211-3219. [PMID: 30214544 DOI: 10.3892/etm.2018.6538] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 06/22/2018] [Indexed: 12/15/2022] Open
Abstract
Previous studies have suggested that microsomal prostaglandin E synthase-1 (mPGES-1) is highly expressed and closely associated with mitogen-activated protein kinase (MAPK) signaling pathways in various types of malignant cells. However, their expression patterns and function with respect to T-cell acute lymphoblastic leukemia (T-ALL) remain largely unknown. The present study investigated whether mPGES-1 served a crucial role in T-ALL and aimed to identify interactions between mPGES-1 and the MAPK signaling pathway in T-ALL. The results indicated that mPGES-1 overexpression in T-ALL jurkat cells was significantly decreased by RNA silencing. Decreasing mPGES-1 on a consistent basis may inhibit cell proliferation, induce apoptosis and arrest the cell cycle in T-ALL jurkat cells. Microarray and western blot analyses revealed that c-Jun N-terminal kinase served a role in the mPGES-1/prostaglandin E2/EP4/MAPK positive feedback loops. In addition, P38 and extracellular signal-regulated kinase 1/2 exhibited negative feedback effects on mPGES-1. In conclusion, the results suggested that cross-talk between mPGES-1 and the MAPK signaling pathway was very complex. Therefore, the combined regulation of mPGES-1 and the MAPK signaling pathway may be developed into a new candidate therapy for T-ALL in the future.
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Affiliation(s)
- Yi-Qing Li
- Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetic and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Jiao-Ting Chen
- Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetic and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China.,Department of Hematology, The Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510655, P.R. China
| | - Song-Mei Yin
- Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Da-Nian Nie
- Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Zhi-Yuan He
- Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Shuang-Feng Xie
- Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Xiu-Ju Wang
- Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Yu-Dan Wu
- Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Jie Xiao
- Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Hong-Yun Liu
- Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Jie-Yu Wang
- Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Wen-Juan Yang
- Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Li-Ping Ma
- Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China
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24
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Zhang Y, Feng J, Fu H, Liu C, Yu Z, Sun Y, She X, Li P, Zhao C, Liu Y, Liu T, Liu Q, Liu Q, Li G, Wu M. Coagulation Factor X Regulated by CASC2c Recruited Macrophages and Induced M2 Polarization in Glioblastoma Multiforme. Front Immunol 2018; 9:1557. [PMID: 30034397 PMCID: PMC6043648 DOI: 10.3389/fimmu.2018.01557] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2018] [Accepted: 06/25/2018] [Indexed: 12/18/2022] Open
Abstract
Tumor-associated macrophages (TAMs) constitute a major component of inflammatory cells in the glioblastoma multiforme (GBM) tumor microenvironment. TAMs have been implicated in GBM angiogenesis, invasion, local tumor recurrence, and immunosuppression. Coagulation factor X (FX) is a vitamin K-dependent plasma protein that plays a role in the regulation of blood coagulation. In this study, we first found that FX was highly expressed and positively correlated with TAM density in human GBM. FX exhibited a potent chemotactic capacity to recruit macrophages and promoted macrophages toward M2 subtype polarization, accelerating GBM growth. FX bound to extracellular signal-related kinase (ERK)1/2 and inhibited p-ERK1/2 in GBM cells. FX was secreted in the tumor microenvironment and increased the phosphorylation and activation of ERK1/2 and AKT in macrophages, which may have been responsible for the M2 subtype macrophage polarization. Moreover, although the lncRNA CASC2c has been verified to function as a miR-101 competing endogenous RNA (ceRNA) to promote miR-101 target genes in GBM cells, we first confirmed that CASC2c did not function as a miR-338-3p ceRNA to promote FX expression, and that FX was a target gene of miR-338-3p. CASC2c interacted with and reciprocally repressed miR-338-3p. Both CASC2c and miR-388-3p bound to FX and commonly inhibited its expression and secretion. CASC2c repressed M2 subtype macrophage polarization. Taken together, our findings revealed a novel mechanism highlighting CASC2c and FX as potential therapeutic targets to improve GBM patients by altering the GBM microenvironment.
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Affiliation(s)
- Yan Zhang
- Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya Medical School, Central South University, Changsha, China.,The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, China
| | - Jianbo Feng
- Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya Medical School, Central South University, Changsha, China.,The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, China
| | - Haijuan Fu
- Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya Medical School, Central South University, Changsha, China.,The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, China
| | - Changhong Liu
- Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya Medical School, Central South University, Changsha, China.,The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, China
| | - Zhibin Yu
- Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya Medical School, Central South University, Changsha, China.,The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, China
| | - Yingnan Sun
- Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya Medical School, Central South University, Changsha, China
| | - Xiaoling She
- The Second Xiangya Hospital, Central South University, Changsha, China
| | - Peiyao Li
- Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya Medical School, Central South University, Changsha, China.,The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, China
| | - Chunhua Zhao
- Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya Medical School, Central South University, Changsha, China.,The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, China
| | - Yang Liu
- Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya Medical School, Central South University, Changsha, China.,The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, China
| | - Tao Liu
- Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya Medical School, Central South University, Changsha, China.,The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, China
| | - Qiang Liu
- The Third Xiangya Hospital, Central South University, Changsha, China
| | - Qing Liu
- The Xiangya Hospital, Central South University, Changsha, China
| | - Guiyuan Li
- Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya Medical School, Central South University, Changsha, China.,The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, China
| | - Minghua Wu
- Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya Medical School, Central South University, Changsha, China.,The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, China
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25
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Therapeutic Targeting of mTOR in T-Cell Acute Lymphoblastic Leukemia: An Update. Int J Mol Sci 2018; 19:ijms19071878. [PMID: 29949919 PMCID: PMC6073309 DOI: 10.3390/ijms19071878] [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: 06/13/2018] [Revised: 06/22/2018] [Accepted: 06/24/2018] [Indexed: 12/14/2022] Open
Abstract
T-cell acute lymphoblastic leukemia (T-ALL) is an aggressive blood malignancy that arises from the clonal expansion of transformed T-cell precursors. Although T-ALL prognosis has significantly improved due to the development of intensive chemotherapeutic protocols, primary drug-resistant and relapsed patients still display a dismal outcome. In addition, lifelong irreversible late effects from conventional therapy are a growing problem for leukemia survivors. Therefore, novel targeted therapies are required to improve the prognosis of high-risk patients. The mechanistic target of rapamycin (mTOR) is the kinase subunit of two structurally and functionally distinct multiprotein complexes, which are referred to as mTOR complex 1 (mTORC1) and mTORC2. These two complexes regulate a variety of physiological cellular processes including protein, lipid, and nucleotide synthesis, as well as autophagy in response to external cues. However, mTOR activity is frequently deregulated in cancer, where it plays a key oncogenetic role driving tumor cell proliferation, survival, metabolic transformation, and metastatic potential. Promising preclinical studies using mTOR inhibitors have demonstrated efficacy in many human cancer types, including T-ALL. Here, we highlight our current knowledge of mTOR signaling and inhibitors in T-ALL, with an emphasis on emerging evidence of the superior efficacy of combinations consisting of mTOR inhibitors and either traditional or targeted therapeutics.
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26
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Wei T, Liu L, Zhou X. Cortex Dictamni extracts inhibit over-proliferation and migration of rat airway smooth muscle cells via FAK/p38/Bcl-2 signaling pathway. Biomed Pharmacother 2018; 102:1-8. [PMID: 29547743 DOI: 10.1016/j.biopha.2018.03.039] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 03/09/2018] [Accepted: 03/09/2018] [Indexed: 02/08/2023] Open
Abstract
Airway smooth muscle (ASM) is a prominent effecter in maintaining bronchial muscle contraction and responsible for airway hyper-responsiveness (AHR); the phenotype change and over-proliferation of airway smooth muscle cells (ASMCs) play key roles in the pathogenesis of asthma. The aim of this study was to investigate the anti-proliferation effects of Cortex Dictamni aqueous extract (CDAE) and ethanol extract (CDE) on ASMCs and the possible underline mechanisms. Cell proliferation rates were determined by MTT assay; matrix metalloproteinases-2 (MMP-2) activity was examined by gelatin zymography; cell proliferation and migration were appraised by in-vitro cell-gap closure assessment; protein expressions of p38, Bcl-2 and FAK of ASMCs were evaluated by western blotting and Ca2+ influx of cells was measured by confocal laser microscope. Our data demonstrated that the proliferation, migration and MMP-2 expressions of ASMCs were inhibited by CDAE or CDE; the protein expressions of p38, Bcl-2 and FAK in ASMCs were substantially reduced by CDAE and CDE detected by western blotting or immunocytochemistry; also the increased calcium influx has been observed instantaneously after ASMCs were stimulated by CDAE or CDE. These findings suggested that Cortex Dictamni extracts might have inhibitory effects on ASMCs over-proliferation which could be one of the underline mechanisms for the therapy of asthma.
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Affiliation(s)
- Tao Wei
- The School of Pharmaceutical Engineering and Life Science, Changzhou University, Jiangsu, 213164, China
| | - Lei Liu
- The Institute of Biomedical Engineering and Health Sciences, Changzhou University, Jiangsu, 213164, China
| | - Xiaoying Zhou
- The School of Pharmaceutical Engineering and Life Science, Changzhou University, Jiangsu, 213164, China; The School of Medicine, The University of Southampton, Southampton, SO16 6YD, UK.
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27
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Jiao Y, Tan S, Xiong J. Proteomic changes of CD4 +/CD25 +/forkhead box p3 + regulatory T cells in a 30-day rat model of sepsis survival. Exp Ther Med 2017; 14:5619-5628. [PMID: 29285101 DOI: 10.3892/etm.2017.5233] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 07/20/2017] [Indexed: 02/07/2023] Open
Abstract
Sepsis is defined as life threatening organ dysfunction arising from a dysregulated host response to infection. The outcomes of sepsis include early mortality, delayed mortality and recovery, and depend on the inflammatory response. Previous studies have demonstrated that regulatory T cells (Tregs) are important in determining the outcome of sepsis, as their suppressive function serves a role in maintaining immune homeostasis. However, Treg-mediated immunosuppression during the course of sepsis remains unclear and little is known about the survival of patients following diagnosis. Studying the survivors of sepsis may explain the mechanisms of natural recovery. Therefore, a 30-day rat model of sepsis survival was established in the current study. Cluster of differentiation CD4+/CD25+/forkhead box p3+ Tregs were isolated from the blood and spleens of rats undergoing cecal ligation and puncture or sham surgery, using flow cytometry. Proteomic analysis was performed using nano high-performance liquid chromatography-mass spectrometry. Several different biological pathways associated with uncommon differentially-expressed proteins were identified in the blood and spleen survivor and sham groups. Extracellular-regulated kinase/mitogen-activated protein kinase, as well as integrin and actin cytoskeletal pathway elements, including Ras-related protein 1b, talin 1 and filamin A, were associated with Tregs in the blood. Pathway elements associated with cell cycle regulators in the B-cell translocation gene family of proteins, tumor necrosis factor receptor superfamily member 4, Hippo signaling, P70-S6 kinase 1, phosphatidylinositol 3-kinase/protein kinase B signaling and 1,25-dihydroxyvitamin D3 biosynthesis were associated with Tregs from the spleen including phosphatase 2A activator regulatory factor 4, histone arginine methyltransferase, CD4, major histocompatibility complex class I antigens, 14-3-3 protein θ and nicotinamide adenine dinucleotide phosphate cytochrome P450 reductase. These results explain the mechanism by which Tregs naturally recover and indicates that Tregs in the blood and spleen vary. Differentially-expressed proteins serving a role in these pathways provide additional insight for the identification of new targets for the diagnosis and treatment of sepsis.
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Affiliation(s)
- Yuxia Jiao
- Department of Anesthesiology, The Second Hospital of Dalian Medical University, Dalian, Liaoning 116027, P.R. China
| | - Siqi Tan
- Department of Anesthesiology, The Second Hospital of Dalian Medical University, Dalian, Liaoning 116027, P.R. China
| | - Junyu Xiong
- Department of Anesthesiology, The Second Hospital of Dalian Medical University, Dalian, Liaoning 116027, P.R. China
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28
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Oliveira ML, Akkapeddi P, Alcobia I, Almeida AR, Cardoso BA, Fragoso R, Serafim TL, Barata JT. From the outside, from within: Biological and therapeutic relevance of signal transduction in T-cell acute lymphoblastic leukemia. Cell Signal 2017. [PMID: 28645565 DOI: 10.1016/j.cellsig.2017.06.011] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
T-cell acute lymphoblastic leukemia (T-ALL) is an aggressive hematological cancer that arises from clonal expansion of transformed T-cell precursors. In this review we summarize the current knowledge on the external stimuli and cell-intrinsic lesions that drive aberrant activation of pivotal, pro-tumoral intracellular signaling pathways in T-cell precursors, driving transformation, leukemia expansion, spread or resistance to therapy. In addition to their pathophysiological relevance, receptors and kinases involved in signal transduction are often attractive candidates for targeted drug development. As such, we discuss also the potential of T-ALL signaling players as targets for therapeutic intervention.
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Affiliation(s)
- Mariana L Oliveira
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Portugal
| | - Padma Akkapeddi
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Portugal
| | - Isabel Alcobia
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Portugal; Instituto de Histologia e Biologia do Desenvolvimento, Faculdade de Medicina, Universidade de Lisboa, Portugal
| | - Afonso R Almeida
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Portugal
| | - Bruno A Cardoso
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Portugal
| | - Rita Fragoso
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Portugal
| | - Teresa L Serafim
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Portugal
| | - João T Barata
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Portugal.
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29
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Kadiri M, El Azreq MA, Berrazouane S, Boisvert M, Aoudjit F. Human Th17 Migration in Three-Dimensional Collagen Involves p38 MAPK. J Cell Biochem 2017; 118:2819-2827. [PMID: 28198034 DOI: 10.1002/jcb.25932] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Accepted: 02/10/2017] [Indexed: 12/16/2022]
Abstract
T cell migration across extracellular matrix (ECM) is an important step of the adaptive immune response but is also involved in the development of inflammatory autoimmune diseases. Currently, the molecular mechanisms regulating the motility of effector T cells in ECM are not fully understood. Activation of p38 MAPK has been implicated in T cell activation and is critical to the development of immune and inflammatory responses. In this study, we examined the implication of p38 MAPK in regulating the migration of human Th17 cells through collagen. Using specific inhibitor and siRNA, we found that p38 is necessary for human Th17 migration in three-dimensional (3D) collagen and that 3D collagen increases p38 phosphorylation. We also provide evidence that the collagen receptor, discoidin domain receptor 1 (DDR1), which promotes Th17 migration in 3D collagen, is involved in p38 activation. Together, our findings suggest that targeting DDR1/p38 MAPK pathway could be beneficial for the treatment of Th17-mediated inflammatory diseases. J. Cell. Biochem. 118: 2819-2827, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Maleck Kadiri
- Axe de Recherche sur les Maladies Infectieuses et Immunitaires, Centre de Recherche du Centre Hospitalier Universitaire de Québec, Québec, Quebec, Canada
| | - Mohammed-Amine El Azreq
- Axe de Recherche sur les Maladies Infectieuses et Immunitaires, Centre de Recherche du Centre Hospitalier Universitaire de Québec, Québec, Quebec, Canada
| | - Sofiane Berrazouane
- Axe de Recherche sur les Maladies Infectieuses et Immunitaires, Centre de Recherche du Centre Hospitalier Universitaire de Québec, Québec, Quebec, Canada
| | - Marc Boisvert
- Axe de Recherche sur les Maladies Infectieuses et Immunitaires, Centre de Recherche du Centre Hospitalier Universitaire de Québec, Québec, Quebec, Canada
| | - Fawzi Aoudjit
- Axe de Recherche sur les Maladies Infectieuses et Immunitaires, Centre de Recherche du Centre Hospitalier Universitaire de Québec, Québec, Quebec, Canada.,Département de Microbiologie-Immunologie, Faculté de Médecine, Université Laval, Québec, Quebec, Canada
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30
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Zhou X, Zhao R, Schwarz K, Mangeat M, Schwarz EC, Hamed M, Bogeski I, Helms V, Rieger H, Qu B. Bystander cells enhance NK cytotoxic efficiency by reducing search time. Sci Rep 2017; 7:44357. [PMID: 28287155 PMCID: PMC5347013 DOI: 10.1038/srep44357] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Accepted: 02/10/2017] [Indexed: 11/24/2022] Open
Abstract
Natural killer (NK) cells play a central role during innate immune responses by eliminating pathogen-infected or tumorigenic cells. In the microenvironment, NK cells encounter not only target cells but also other cell types including non-target bystander cells. The impact of bystander cells on NK killing efficiency is, however, still elusive. In this study we show that the presence of bystander cells, such as P815, monocytes or HUVEC, enhances NK killing efficiency. With bystander cells present, the velocity and persistence of NK cells were increased, whereas the degranulation of lytic granules remained unchanged. Bystander cell-derived H2O2 was found to mediate the acceleration of NK cell migration. Using mathematical diffusion models, we confirm that local acceleration of NK cells in the vicinity of bystander cells reduces their search time to locate target cells. In addition, we found that integrin β chains (β1, β2 and β7) on NK cells are required for bystander-enhanced NK migration persistence. In conclusion, we show that acceleration of NK cell migration in the vicinity of H2O2-producing bystander cells reduces target cell search time and enhances NK killing efficiency.
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Affiliation(s)
- Xiao Zhou
- Biophysics, Center for Integrative Physiology and Molecular Medicine, School of Medicine, Saarland University, 66421 Homburg, Germany
| | - Renping Zhao
- Biophysics, Center for Integrative Physiology and Molecular Medicine, School of Medicine, Saarland University, 66421 Homburg, Germany
| | - Karsten Schwarz
- Department of Theoretical Physics, Saarland University, 66123 Saarbrücken, Germany
| | - Matthieu Mangeat
- Department of Theoretical Physics, Saarland University, 66123 Saarbrücken, Germany
| | - Eva C. Schwarz
- Biophysics, Center for Integrative Physiology and Molecular Medicine, School of Medicine, Saarland University, 66421 Homburg, Germany
| | - Mohamed Hamed
- Center for Bioinformatics, Saarland University, 66041 Saarbrücken, Germany
- Institute for Biostatistics and Informatics in Medicine and Ageing Research, Rostock University Medical Center, 18057 Rostock, Germany
| | - Ivan Bogeski
- Biophysics, Center for Integrative Physiology and Molecular Medicine, School of Medicine, Saarland University, 66421 Homburg, Germany
| | - Volkhard Helms
- Center for Bioinformatics, Saarland University, 66041 Saarbrücken, Germany
| | - Heiko Rieger
- Department of Theoretical Physics, Saarland University, 66123 Saarbrücken, Germany
| | - Bin Qu
- Biophysics, Center for Integrative Physiology and Molecular Medicine, School of Medicine, Saarland University, 66421 Homburg, Germany
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31
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Pan L, Zhao Y, Yuan Z, Farouk MH, Zhang S, Bao N, Qin G. The Integrins Involved in Soybean Agglutinin-Induced Cell Cycle Alterations in IPEC-J2. Mol Cells 2017; 40:109-116. [PMID: 28222496 PMCID: PMC5339501 DOI: 10.14348/molcells.2017.2207] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 12/09/2016] [Accepted: 01/06/2017] [Indexed: 12/26/2022] Open
Abstract
Soybean agglutinin (SBA) is an anti-nutritional factor of soybean, affecting cell proliferation and inducing cytotoxicity. Integrins are transmembrane receptors, mediating a variety of cell biological processes. This research aims to study the effects of SBA on cell proliferation and cell cycle progression of the intestinal epithelial cell line from piglets (IPEC-J2), to identify the integrin subunits especially expressed in IPEC-J2s, and to analyze the functions of these integrins on IPEC-J2 cell cycle progression and SBA-induced IPEC-J2 cell cycle alteration. The results showed that SBA lowered cell proliferation rate as the cell cycle progression from G0/G1 to S phase (P < 0.05) was inhibited. Moreover, SBA lowered mRNA expression of cell cycle-related gene CDK4, Cyclin E and Cyclin D1 (P < 0.05). We successfully identified integrins α2, α3, α6, β1, and β4 in IPEC-J2s. These five subunits were crucial to maintain normal cell proliferation and cell cycle progression in IPEC-J2s. Restrain of either these five subunits by their inhibitors, lowered cell proliferation rate, and arrested the cells at G0/G1 phase of cell cycle (P < 0.05). Further analysis indicated that integrin α2, α6, and β1 were involved in the blocking of G0/G1 phase induced by SBA. In conclusion, these results suggested that SBA lowered the IPEC-J2 cell proliferation rate through the perturbation of cell cycle progression. Furthermore, integrins were important for IPEC-J2 cell cycle progression, and they were involved in the process of SBA-induced cell cycle progression alteration, which provide a basis for further revealing SBA anti-proliferation and anti-nutritional mechanism.
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Affiliation(s)
- Li Pan
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science, Jilin Province, College of Animal Science and Technology, Jilin Agricultural University, Changchun,
P. R. China
| | - Yuan Zhao
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science, Jilin Province, College of Animal Science and Technology, Jilin Agricultural University, Changchun,
P. R. China
| | - Zhijie Yuan
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science, Jilin Province, College of Animal Science and Technology, Jilin Agricultural University, Changchun,
P. R. China
| | - Mohammed Hamdy Farouk
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science, Jilin Province, College of Animal Science and Technology, Jilin Agricultural University, Changchun,
P. R. China
- Animal production Department, Faculty of Agriculture, Al-Azhar University, Nasr City, Cairo,
Egypt
| | - Shiyao Zhang
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science, Jilin Province, College of Animal Science and Technology, Jilin Agricultural University, Changchun,
P. R. China
| | - Nan Bao
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science, Jilin Province, College of Animal Science and Technology, Jilin Agricultural University, Changchun,
P. R. China
| | - Guixin Qin
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science, Jilin Province, College of Animal Science and Technology, Jilin Agricultural University, Changchun,
P. R. China
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32
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Erickson CA, Ray B, Wink LK, Bayon BL, Pedapati EV, Shaffer R, Schaefer TL, Lahiri DK. Initial analysis of peripheral lymphocytic extracellular signal related kinase activation in autism. J Psychiatr Res 2017; 84:153-160. [PMID: 27743527 PMCID: PMC5903443 DOI: 10.1016/j.jpsychires.2016.09.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Revised: 08/02/2016] [Accepted: 09/01/2016] [Indexed: 12/31/2022]
Abstract
BACKGROUND Dysregulation of extracellular signal-related kinase (ERK) activity has been potentially implicated in the pathophysiology of autistic disorder (autism). ERK is part of a central intracellular signaling cascade responsible for a myriad of cellular functions. ERK is expressed in peripheral blood lymphocytes, and measurement of activated (phosphorylated) lymphocytic ERK is commonly executed in many areas of medicine. We sought to conduct the first study of ERK activation in humans with autism by utilizing a lymphocytic ERK activation assay. We hypothesized that ERK activation would be enhanced in peripheral blood lymphocytes from persons with autism compared to those of neurotypical control subjects. METHOD We conducted an initial study of peripheral lymphocyte ERK activation in 45 subjects with autism and 26 age- and gender-matched control subjects (total n = 71). ERK activation was measured using a lymphocyte counting method (primary outcome expressed as lymphocytes staining positive for cytosolic phosphorylated ERK divided by total cells counted) and additional Western blot analysis of whole cell phosphorylated ERK adjusted for total ERK present in the lymphocyte lysate sample. RESULTS Cytosolic/nuclear localization of pERK activated cells were increased by almost two-fold in the autism subject group compared to matched neurotypical control subjects (cell count ratio of 0.064 ± 0.044 versus 0.034 ± 0.031; p = 0.002). Elevated phosphorylated ERK levels in whole cell lysates also showed increased activated ERK in the autism group compared to controls (n = 54 total) in Western blot analysis. CONCLUSIONS The results of this first in human ERK activation study are consistent with enhanced peripheral lymphocytic ERK activation in autism, as well as suggesting that cellular compartmentalization of activated ERK may be altered in this disorder. Future work will be required to explore the impact of concomitant medication use and other subject characteristics such as level of cognitive functioning on ERK activation. TRIAL REGISTRATION Not applicable.
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Affiliation(s)
- Craig A Erickson
- Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA.
| | - Balmiki Ray
- Department of Psychiatry, Indiana University School of Medicine, Neuroscience Research Center, 320 West 15th Street, NB 200C, Indianapolis, IN 46202, USA.
| | - Logan K Wink
- Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA.
| | - Baindu L Bayon
- Department of Psychiatry, Indiana University School of Medicine, Neuroscience Research Center, 320 West 15th Street, NB 200C, Indianapolis, IN 46202, USA.
| | - Ernest V Pedapati
- Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA.
| | - Rebecca Shaffer
- Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA.
| | - Tori L Schaefer
- Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA.
| | - Debomoy K Lahiri
- Department of Psychiatry, Indiana University School of Medicine, Neuroscience Research Center, 320 West 15th Street, NB 200C, Indianapolis, IN 46202, USA.
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Shi L, Fu S, Fahim S, Pan S, Lina H, Mu X, Niu Y. TNF-alpha stimulation increases dental pulp stem cell migration in vitro through integrin alpha-6 subunit upregulation. Arch Oral Biol 2016; 75:48-54. [PMID: 28043012 DOI: 10.1016/j.archoralbio.2016.12.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 09/19/2016] [Accepted: 12/14/2016] [Indexed: 01/09/2023]
Abstract
OBJECTIVE The dissemination of stem cells into tissues requiring inflammatory and reparative response is fundamentally dependent upon their chemotactic migration. Expression of TNF-α is up regulated in inflamed pulps. Dental pulp cells are also known to express integrin α6 subunit. Expression of integrin subunit α6 has been linked to the acquisition of migratory potential in a wide variety of cell types in both pathological and physiological capacities. Therefore, in this study we examined the effects of a pleiotropic cytokine TNF-α on the migration of hDPSCs and investigated its relationship with expression of integrin α6 in hDPSCs during chemotactic migration. DESIGN hDPSC cultures were established. Protein expression profile of α6 integrin subunit was determined. Effect of exogenous TNF-α (50ng/mL) on hDPSCs' migration potential was evaluated by transwell inserts and in vitro scratch assay. Upregulation/downregulation of TNF-α mediated migration was assayed in presence/absence of integrin α6 respectively. To suppress integrin α6 expression, cells were transfected with integrin α6 siRNA and then cell migration and cytoskeletal changes were evaluated. RESULTS Our results showed significant increase of hDPSCs' migration after stimulation with TNF-α. By knockdown of integrin α6, which is upregulated by TNF-α, we observed a decrease in the TNF-α directed chemotaxis of hDPSCs. CONCLUSION In this study, we show that activation of integrin α6 brought about by TNF-α led to an increase in migratory activity in DPSCs in vitro thus describing a novel association between a cytokine TNF-α and α6 chain of an adhesion receptor integrin in regulating migration of hDPSCs.
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Affiliation(s)
- Lei Shi
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, 143 Yiman Street, Nangang District, Harbin, 150001, China; Oral Biomedical Research Institute of Harbin Medical University, 143 Yiman Street, Nangang District, Harbin, 150001, China.
| | - Shanqi Fu
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, 143 Yiman Street, Nangang District, Harbin, 150001, China.
| | - Sidra Fahim
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, 143 Yiman Street, Nangang District, Harbin, 150001, China.
| | - Shuang Pan
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, 143 Yiman Street, Nangang District, Harbin, 150001, China; Oral Biomedical Research Institute of Harbin Medical University, 143 Yiman Street, Nangang District, Harbin, 150001, China.
| | - He Lina
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, 143 Yiman Street, Nangang District, Harbin, 150001, China.
| | - Xiaodan Mu
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, 143 Yiman Street, Nangang District, Harbin, 150001, China.
| | - Yumei Niu
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, 143 Yiman Street, Nangang District, Harbin, 150001, China; Oral Biomedical Research Institute of Harbin Medical University, 143 Yiman Street, Nangang District, Harbin, 150001, China.
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Wang G, Wang X, Huang X, Yang H, Pang S, Xie X, Zeng S, Lin J, Diao Y. Inhibition of integrin β3, a binding partner of kallistatin, leads to reduced viability, invasion and proliferation in NCI-H446 cells. Cancer Cell Int 2016; 16:90. [PMID: 27980455 PMCID: PMC5134261 DOI: 10.1186/s12935-016-0365-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Accepted: 11/23/2016] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Kallistatin is a serine proteinase inhibitor and heparin-binding protein. It is considered an endogenous angiogenic inhibitor. In addition, multiple studies demonstrated that kallistatin directly inhibits cancer cell growth. However, the molecular mechanisms underlying these effects remain unclear. METHODS Pull-down, immunoprecipitation, and immunoblotting were used for binding experiments. To elucidate the mechanisms, integrin β3 knockdown (siRNA) or blockage (antibody treatment) on the cell surface of small the cell lung cancer NCI-H446 cell line was used. RESULTS Interestingly, kallistatin was capable of binding integrin β3 on the cell surface of NCI-H446 cells. Meanwhile, integrin β3 knockdown or blockage resulted in loss of antitumor activities induced by kallistatin. Furthermore, kallistatin suppressed tyrosine phosphorylation of integrin β3 and its downstream signaling pathways, including FAK/-Src, AKT and Erk/MAPK. Viability, proliferation and migration of NCI-H446 cells were inhibited by kallistatin, with Bcl-2 and Grb2 downregulation, and Bax, cleaved caspase-9 and caspase 3 upregulation. CONCLUSIONS These findings reveal a novel role for kallistatin in preventing small cell lung cancer growth and mobility, by direct interaction with integrin β3, leading to blockade of the related signaling pathway.
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Affiliation(s)
- Guoquan Wang
- Institute of Molecular Medicine, Huaqiao University, Quanzhou, 362021 China
| | - Xiao Wang
- Institute of Molecular Medicine, Huaqiao University, Quanzhou, 362021 China
| | - Xiaoping Huang
- Institute of Molecular Medicine, Huaqiao University, Quanzhou, 362021 China.,College of Chemical Engineering and Materials Sciences, Quanzhou Normal University, Quanzhou, 326000 China.,School of Chemistry and Chemical Engineering of Guangxi Normal University, Guilin, 541004 China
| | - Huiyong Yang
- Institute of Molecular Medicine, Huaqiao University, Quanzhou, 362021 China
| | - Suqiu Pang
- Institute of Molecular Medicine, Huaqiao University, Quanzhou, 362021 China
| | - Xiaolan Xie
- College of Chemical Engineering and Materials Sciences, Quanzhou Normal University, Quanzhou, 326000 China
| | - Shulan Zeng
- School of Chemistry and Chemical Engineering of Guangxi Normal University, Guilin, 541004 China
| | - Junsheng Lin
- Institute of Molecular Medicine, Huaqiao University, Quanzhou, 362021 China
| | - Yong Diao
- Institute of Molecular Medicine, Huaqiao University, Quanzhou, 362021 China
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Research advances on structure and biological functions of integrins. SPRINGERPLUS 2016; 5:1094. [PMID: 27468395 PMCID: PMC4947080 DOI: 10.1186/s40064-016-2502-0] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Accepted: 06/02/2016] [Indexed: 12/18/2022]
Abstract
Integrins are an important family of adhesion molecules that were first discovered two decades ago. Integrins are transmembrane heterodimeric glycoprotein receptors consisting of α and β subunits, and are comprised of an extracellular domain, a transmembrane domain, and a cytoplasmic tail. Therein, integrin cytoplasmic domains may associate directly with numerous cytoskeletal proteins and intracellular signaling molecules, which are crucial for modulating fundamental cell processes and functions including cell adhesion, proliferation, migration, and survival. The purpose of this review is to describe the unique structure of each integrin subunit, primary cytoplasmic association proteins, and transduction signaling pathway of integrins, with an emphasis on their biological functions.
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Bachsais M, Naddaf N, Yacoub D, Salti S, Alaaeddine N, Aoudjit F, Hassan GS, Mourad W. The Interaction of CD154 with the α5β1 Integrin Inhibits Fas-Induced T Cell Death. PLoS One 2016; 11:e0158987. [PMID: 27391025 PMCID: PMC4938623 DOI: 10.1371/journal.pone.0158987] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 06/26/2016] [Indexed: 11/19/2022] Open
Abstract
CD154, a critical regulator of the immune response, is usually associated with chronic inflammatory, autoimmune diseases as well as malignant disorders. In addition to its classical receptor CD40, CD154 is capable of binding other receptors, members of the integrin family, the αIIbβ3, αMβ2 and α5β1. Given the role attributed to integrins and particularly the β1 integrins in inhibiting apoptotic events in normal as well as malignant T cells, we were highly interested in investigating the role of the CD154/α5β1 interaction in promoting survival of malignant T cells contributing as such to tumor development and/or propagation. To support our hypothesis, we first show that soluble CD154 binds to the T-cell acute lymphoblastic leukemia cell line, Jurkat E6.1 in a α5β1-dependent manner. Binding of soluble CD154 to α5β1 integrin of Jurkat cells leads to the activation of key survival proteins, including the p38 and ERK1/2 mitogen-activated protein kinases (MAPKs), phosphoinositide 3 kinase (PI-3K), and Akt. Interestingly, soluble CD154 significantly inhibits Fas-mediated apoptosis in T cell leukemia-lymphoma cell lines, Jurkat E6.1 and HUT78 cells, an important hallmark of T cell survival during malignancy progression. These anti-apoptotic effects were mainly mediated by the activation of the PI-3K/Akt pathway but also involved the p38 and the ERK1/2 MAPKs cascades. Our data also demonstrated that the CD154-triggered inhibition of the Fas-mediated cell death response was dependent on a suppression of caspase-8 cleavage, but independent of de novo protein synthesis or alterations in Fas expression on cell surface. Together, our results highlight the impact of the CD154/α5β1 interaction in T cell function/survival and identify novel targets for the treatment of malignant disorders, particularly of T cell origin.
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Affiliation(s)
- Meriem Bachsais
- Laboratoire d’Immunologie Cellulaire et Moléculaire, Centre Hospitalier de l’Université de Montréal, 900 rue Saint-Denis, Tour Viger, Room 10-482, Montréal, QC, Canada
| | - Nadim Naddaf
- Laboratoire d’Immunologie Cellulaire et Moléculaire, Centre Hospitalier de l’Université de Montréal, 900 rue Saint-Denis, Tour Viger, Room 10-482, Montréal, QC, Canada
| | - Daniel Yacoub
- Laboratoire d’Immunologie Cellulaire et Moléculaire, Centre Hospitalier de l’Université de Montréal, 900 rue Saint-Denis, Tour Viger, Room 10-482, Montréal, QC, Canada
| | - Suzanne Salti
- Laboratoire d’Immunologie Cellulaire et Moléculaire, Centre Hospitalier de l’Université de Montréal, 900 rue Saint-Denis, Tour Viger, Room 10-482, Montréal, QC, Canada
| | - Nada Alaaeddine
- Department of Pathology, 11-5076, Faculty of Medicine, St Joseph University, Beirut, Lebanon
| | - Fawzi Aoudjit
- Centre de recherche en immunologie et rhumatologie, CHUL, 2705, Boul Laurier, QC, Canada
| | - Ghada S. Hassan
- Laboratoire d’Immunologie Cellulaire et Moléculaire, Centre Hospitalier de l’Université de Montréal, 900 rue Saint-Denis, Tour Viger, Room 10-482, Montréal, QC, Canada
| | - Walid Mourad
- Laboratoire d’Immunologie Cellulaire et Moléculaire, Centre Hospitalier de l’Université de Montréal, 900 rue Saint-Denis, Tour Viger, Room 10-482, Montréal, QC, Canada
- * E-mail:
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Shi H, Lin B, Huang Y, Wu J, Zhang H, Lin C, Wang Z, Zhu J, Zhao Y, Fu X, Lou Z, Li X, Xiao J. Basic fibroblast growth factor promotes melanocyte migration via activating PI3K/Akt-Rac1-FAK-JNK and ERK signaling pathways. IUBMB Life 2016; 68:735-47. [DOI: 10.1002/iub.1531] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2016] [Accepted: 06/07/2016] [Indexed: 12/18/2022]
Affiliation(s)
- Hongxue Shi
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering; Wenzhou Medical University; Wenzhou China
| | - Beibei Lin
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering; Wenzhou Medical University; Wenzhou China
| | - Yan Huang
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering; Wenzhou Medical University; Wenzhou China
| | - Jiang Wu
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering; Wenzhou Medical University; Wenzhou China
| | - Hongyu Zhang
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering; Wenzhou Medical University; Wenzhou China
| | - Cai Lin
- Wound Healing and Cell Biology Laboratory; Institute of Basic Medical Science, Chinese PLA General Hospital; Beijing China
| | - Zhouguang Wang
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering; Wenzhou Medical University; Wenzhou China
| | - Jingjing Zhu
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering; Wenzhou Medical University; Wenzhou China
| | - Yingzhen Zhao
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering; Wenzhou Medical University; Wenzhou China
| | - Xiaobing Fu
- Wound Healing and Cell Biology Laboratory; Institute of Basic Medical Science, Chinese PLA General Hospital; Beijing China
| | - Zhencai Lou
- Department of Otorhinolaryngology; The Affiliated YiWu Hospital, Wenzhou Medical University; Yiwu China
| | - Xiaokun Li
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering; Wenzhou Medical University; Wenzhou China
| | - Jian Xiao
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering; Wenzhou Medical University; Wenzhou China
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Na HS, Park MH, Song YR, Kim S, Kim HJ, Lee JY, Choi JI, Chung J. Elevated MicroRNA-128 in Periodontitis Mitigates Tumor Necrosis Factor-α Response via p38 Signaling Pathway in Macrophages. J Periodontol 2016; 87:e173-82. [PMID: 27240473 DOI: 10.1902/jop.2016.160033] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Periodontitis is a chronic inflammatory disease resulting from an inflammatory response to subgingival plaque bacteria, including Porphyromonas gingivalis. MicroRNA (miRNA) is a current focus in regulating the inflammatory processes. In this study, the inflammatory miRNA expression in gingival tissues of patients with periodontitis and of healthy individuals is compared, and its role in regulating the inflammatory response is examined. METHODS Gingival tissues from patients with periodontitis and healthy individuals were collected for miRNA microarray. THP-1 and CA9-22 cells were challenged with P. gingivalis, and miRNA expression was determined by real-time polymerase chain reaction. Target genes for miRNA were predicted using TargetScanHuman database, and miRNA gene expressions were reviewed using public databases. For the functional study, THP-1 cells were transfected with a miRNA-128 mimic, and target gene expression was compared with THP-1 cells challenged with P. gingivalis. For the tolerance test, THP-1 cells transfected with miRNA-128 mimic were treated with phorbol 12-myristate 13-acetate (PMA) or paraformaldehyde (PFA)-fixed Escherichia coli. Tumor necrosis factor (TNF)-α production was determined by enzyme-linked immunosorbent assay, and mitogen-activated protein kinase (MAPK) protein phosphorylation was determined by Western blot. RESULTS Gingival tissues from patients with periodontitis showed increased expression of miRNA-128, miRNA-34a, and miRNA-381 and decreased expression of miRNA-15b, miRNA-211, miRNA-372, and miRNA-656. THP-1 cells and CA9-22 cells challenged with P. gingivalis showed increased miRNA-128 expression. Among the predicted miRNA-128 target genes, several genes that are involved in MAPK signaling pathway showed similar gene expression pattern between P. gingivalis challenge and miRNA-128 mimic transfection. In THP-1 cells transfected with miRNA-128 mimic, TNF-α production was lower, and phosphorylation of p38 was inhibited when challenged with PMA or PFA-fixed E. coli. CONCLUSION miRNA-128 may be involved in mitigating the inflammatory response induced by P. gingivalis in periodontitis.
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Affiliation(s)
- Hee Sam Na
- Department of Oral Microbiology, School of Dentistry, Pusan National University, Yangsan, Korea
| | - Mi Hee Park
- Department of Oral Microbiology, School of Dentistry, Pusan National University, Yangsan, Korea
| | - Yu Ri Song
- Department of Oral Microbiology, School of Dentistry, Pusan National University, Yangsan, Korea
| | - Seyeon Kim
- Department of Oral Microbiology, School of Dentistry, Pusan National University, Yangsan, Korea
| | - Hyung-Joon Kim
- Department of Oral Physiology, School of Dentistry, Pusan National University
| | - Ju Youn Lee
- Department of Periodontics, School of Dentistry, Pusan National University
| | - Jeom-Il Choi
- Department of Periodontics, School of Dentistry, Pusan National University
| | - Jin Chung
- Department of Oral Microbiology, School of Dentistry, Pusan National University, Yangsan, Korea
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Xia JB, Mao CZ, Chen ZY, Liu GH, Wu HY, Zhou DC, Park KS, Zhao H, Kim SK, Cai DQ, Qi XF. The CXCL10/CXCR3 axis promotes cardiac microvascular endothelial cell migration via the p38/FAK pathway in a proliferation-independent manner. Exp Mol Pathol 2016; 100:257-65. [PMID: 26835911 DOI: 10.1016/j.yexmp.2016.01.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Revised: 01/11/2016] [Accepted: 01/29/2016] [Indexed: 01/15/2023]
Abstract
CXCL10 is a chemokine with potent chemotactic activity for immune and non-immune cells expressing its receptor CXCR3. Previous studies have demonstrated that CXCL10 is involved in myocardial infarction. However, the role of CXCL10 in cardiac microvascular endothelial cell (CMEC) regulation and related mechanisms remains unclear. In this study, we investigated the effects of CXCL10 on the CMEC migration and explored its potential molecular mechanism by wound healing, cell proliferation and viability analysis. Furthermore, migration-related signaling pathways, including FAK, Erk, p38 and Smad, were examined by Western blotting. We found that CXCL10 significantly promotes CMEC migration under normal conditions and during hypoxia/ischemia. However, no significant differences in CMEC proliferation and viability were observed with or without CXCL10 treatment. CXCL10-mediated CMEC migration was greatly blocked by treatment with an anti-CXCR3 antibody. Although CXCL10 treatment promoted phosphorylation and activation of the FAK, Erk, and p38 pathways during hypoxia/ischemia, CXCL10-mediated CMEC migration was significantly blocked by p38 and FAK inhibitors, but not by an Erk inhibitor. Furthermore, CXCL10-mediated FAK activation was suppressed by the p38 inhibitor. These findings indicated that the CXCL10/CXCR3 pathway promotes the migration of CMECs under normal conditions and during hypoxia/ischemia in a proliferation-independent manner, at least in part, through regulation of the p38/FAK pathways.
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Affiliation(s)
- Jing-Bo Xia
- Key Laboratory of Regenerative Medicine (JNU-CUHK), Ministry of Education and Department of Developmental & Regenerative Biology, Ji Nan University, Guangzhou 510632, China
| | - Cheng-Zhou Mao
- Key Laboratory of Regenerative Medicine (JNU-CUHK), Ministry of Education and Department of Developmental & Regenerative Biology, Ji Nan University, Guangzhou 510632, China
| | - Zhuo-Ying Chen
- Key Laboratory of Regenerative Medicine (JNU-CUHK), Ministry of Education and Department of Developmental & Regenerative Biology, Ji Nan University, Guangzhou 510632, China
| | - Guang-Hui Liu
- Key Laboratory of Regenerative Medicine (JNU-CUHK), Ministry of Education and Department of Developmental & Regenerative Biology, Ji Nan University, Guangzhou 510632, China
| | - Hai-Yan Wu
- Key Laboratory of Regenerative Medicine (JNU-CUHK), Ministry of Education and Department of Developmental & Regenerative Biology, Ji Nan University, Guangzhou 510632, China
| | - Deng-Cheng Zhou
- Key Laboratory of Regenerative Medicine (JNU-CUHK), Ministry of Education and Department of Developmental & Regenerative Biology, Ji Nan University, Guangzhou 510632, China
| | - Kyu-Sang Park
- Department of Physiology, Yonsei University Wonju College of Medicine, Wonju, Gangwon 220-701, South Korea
| | - Hui Zhao
- School of Biomedical Sciences, Faculty of Medicine, Chinese University of Hong Kong, Hong Kong, China
| | - Soo-Ki Kim
- Department of Microbiology, Yonsei University Wonju College of Medicine, Wonju, Gangwon 220-701, South Korea.
| | - Dong-Qing Cai
- Key Laboratory of Regenerative Medicine (JNU-CUHK), Ministry of Education and Department of Developmental & Regenerative Biology, Ji Nan University, Guangzhou 510632, China.
| | - Xu-Feng Qi
- Key Laboratory of Regenerative Medicine (JNU-CUHK), Ministry of Education and Department of Developmental & Regenerative Biology, Ji Nan University, Guangzhou 510632, China.
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Gomes-Cornélio AL, Rodrigues EM, Salles LP, Mestieri LB, Faria G, Guerreiro-Tanomaru JM, Tanomaru-Filho M. Bioactivity of MTA Plus, Biodentine and an experimental calcium silicate-based cement on human osteoblast-like cells. Int Endod J 2016; 50:39-47. [PMID: 26610093 DOI: 10.1111/iej.12589] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Accepted: 11/20/2015] [Indexed: 01/16/2023]
Abstract
AIM To compare the bioactivity of Biodentine (BIO, Septodont), MTA Plus (MTA P, Avalon) and calcium silicate experimental cement (CSC) with resin (CSCR) associated with zirconium (CSCR ZrO2 ) or niobium (CSCR Nb2 O5 ) oxide as radiopacifiers. METHODOLOGY According to the relevance of osteoblastic cell response for mineralized tissue repair, human osteoblastic cells (Saos-2) were exposed to test materials and assessed for viability (MTT), cell proliferation, gene expression of alkaline phosphatase (ALP) osteogenic marker by real-time PCR (RT-qPCR), ALP activity assay and alizarin red staining (ARS) to detect mineralization nodule deposition in osteogenic medium. Unexposed cells acted as the control group (C). Statistical analysis was carried out using ANOVA and the Bonferroni post-test (P < 0.05). RESULTS All tested cements showed dose-dependent responses in cell viability (MTT). Exposed cells revealed good viability (80-130% compared to the control group) in the highest dilutions of all types of cement. MTA P, BIO and CSCR ZrO2 significantly increased the velocity of cell proliferation after three days of cell exposure in the wound-healing assay (P < 0.05), which corroborated MTT data. On day 3, the ALP transcript level increased, especially to CSCR Nb2 O5 (P < 0.05). All cements exhibited suitable ALP enzyme activity, highlighting the 7-day period of cell exposure. ARS, CSCR Nb2 O5 , revealed a significant potential to induce mineralization in vitro. CONCLUSIONS All materials had suitable biocompatibility and bioactivity. The MTA P, BIO and CSCR ZrO2 groups had the highest viability rates and velocity of proliferation whilst the CSCR Nb2 O5 group produced more mineralized nodules.
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Affiliation(s)
- A L Gomes-Cornélio
- Department of Restorative Dentistry, Araraquara Dental School, UNESP - Univ Estadual Paulista, Araraquara, SP, Brazil
| | - E M Rodrigues
- Department of Restorative Dentistry, Araraquara Dental School, UNESP - Univ Estadual Paulista, Araraquara, SP, Brazil
| | - L P Salles
- Cellular Biology Department, Institute of Biological Sciences, University of Brasília, Distrito Federal, Brazil
| | - L B Mestieri
- Department of Restorative Dentistry, Araraquara Dental School, UNESP - Univ Estadual Paulista, Araraquara, SP, Brazil
| | - G Faria
- Department of Restorative Dentistry, Araraquara Dental School, UNESP - Univ Estadual Paulista, Araraquara, SP, Brazil
| | - J M Guerreiro-Tanomaru
- Department of Restorative Dentistry, Araraquara Dental School, UNESP - Univ Estadual Paulista, Araraquara, SP, Brazil
| | - M Tanomaru-Filho
- Department of Restorative Dentistry, Araraquara Dental School, UNESP - Univ Estadual Paulista, Araraquara, SP, Brazil
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Crosstalk between SDF-1/CXCR4 and SDF-1/CXCR7 in cardiac stem cell migration. Sci Rep 2015; 5:16813. [PMID: 26578388 PMCID: PMC4649491 DOI: 10.1038/srep16813] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Accepted: 10/20/2015] [Indexed: 12/20/2022] Open
Abstract
Stromal cell-derived factor 1 (SDF-1) is a chemokine that can be expressed in injured cardiomyocytes after myocardial infarction (MI). By combining with its receptor CXCR4, SDF-1 induced stem and progenitor cells migration. CXCR7, a novel receptor for SDF-1, has been identified recently. We aimed to explore the roles of SDF-1/CXCR4 and SDF-1/CXCR7 pathway and their crosstalk in CSCs migration. In the present study, CXCR4 and CXCR7 expression were identified in CSCs. Transwell assay showed that SDF-1 caused CSCs migration in a dose- and time-dependent manner, which could be significantly suppressed by CXCR4 or CXCR7 siRNA. Phospho-ERK, phospho-Akt and Raf-1 significantly elevated in CSCs with SDF-1 stimulation. Knockdown of CXCR4 or CXCR7 significantly decreased phospho-ERK or phospho-Akt, respectively, and eventually resulted in the inhibition of CSCs migration. Moreover, western blot showed that MK2206 (Akt inhibitor) increased the expression of phospho-ERK and Raf-1, whereas PD98059 (ERK inhibitor) had no effect on phospho-Akt and Raf-1. GW5074 (Raf-1 inhibitor) upregulated the expression of phospho-ERK, but had no effect on phospho-Akt. The present study indicated that SDF-1/CXCR7/Akt and SDF-1/CXCR4/ERK pathway played important roles in CSCs migration. Akt phosphorylation inhibited Raf-1 activity, which in turn dephosphorylated ERK and negatively regulated CSCs migration.
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Chiarini F, Lonetti A, Evangelisti C, Buontempo F, Orsini E, Evangelisti C, Cappellini A, Neri LM, McCubrey JA, Martelli AM. Advances in understanding the acute lymphoblastic leukemia bone marrow microenvironment: From biology to therapeutic targeting. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2015; 1863:449-463. [PMID: 26334291 DOI: 10.1016/j.bbamcr.2015.08.015] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Revised: 08/26/2015] [Accepted: 08/27/2015] [Indexed: 02/07/2023]
Abstract
The bone marrow (BM) microenvironment regulates the properties of healthy hematopoietic stem cells (HSCs) localized in specific niches. Two distinct microenvironmental niches have been identified in the BM, the "osteoblastic (endosteal)" and "vascular" niches. Nevertheless, these niches provide sanctuaries where subsets of leukemic cells escape chemotherapy-induced death and acquire a drug-resistant phenotype. Moreover, it is emerging that leukemia cells are able to remodel the BM niches into malignant niches which better support neoplastic cell survival and proliferation. This review focuses on the cellular and molecular biology of microenvironment/leukemia interactions in acute lymphoblastic leukemia (ALL) of both B- and T-cell lineage. We shall also highlight the emerging role of exosomes/microvesicles as efficient messengers for cell-to-cell communication in leukemia settings. Studies on the interactions between the BM microenvironment and ALL cells have led to the discovery of potential therapeutic targets which include cytokines/chemokines and their receptors, adhesion molecules, signal transduction pathways, and hypoxia-related proteins. The complex interplays between leukemic cells and BM microenvironment components provide a rationale for innovative, molecularly targeted therapies, designed to improve ALL patient outcome. A better understanding of the contribution of the BM microenvironment to the process of leukemogenesis and leukemia persistence after initial remission, may provide new targets that will allow destruction of leukemia cells without adversely affecting healthy HSCs. This article is part of a Special Issue entitled: Tumor Microenvironment Regulation of Cancer Cell Survival, Metastasis,Inflammation, and Immune Surveillance edited by Peter Ruvolo and Gregg L. Semenza.
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Affiliation(s)
- Francesca Chiarini
- Institute of Molecular Genetics, National Research Council, Rizzoli Orthopedic Institute, Bologna, Italy
| | - Annalisa Lonetti
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Camilla Evangelisti
- Institute of Molecular Genetics, National Research Council, Rizzoli Orthopedic Institute, Bologna, Italy
| | - Francesca Buontempo
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Ester Orsini
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Cecilia Evangelisti
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Alessandra Cappellini
- Department of Human Social and Health Sciences, University of Cassino, Cassino, Italy
| | - Luca M Neri
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - James A McCubrey
- Department of Microbiology & Immunology, Brody School of Medicine, East Carolina University, Greenville, NC, USA
| | - Alberto M Martelli
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy.
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Naci D, Vuori K, Aoudjit F. Alpha2beta1 integrin in cancer development and chemoresistance. Semin Cancer Biol 2015; 35:145-53. [PMID: 26297892 DOI: 10.1016/j.semcancer.2015.08.004] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Revised: 08/10/2015] [Accepted: 08/14/2015] [Indexed: 01/06/2023]
Abstract
Extracellular matrix, via its receptors the integrins, has emerged as a crucial factor in cancer development. The α2β1 integrin is a major collagen receptor that is widely expressed and known to promote cell migration and control tissue homeostasis. Growing evidence suggests that it can be a key pathway in cancer. Recent studies have shown that α2β1 integrin is a regulator of cancer metastasis either by promoting or inhibiting the dissemination process of cancer cells. The α2β1 integrin signaling can also enhance tumor angiogenesis. Emerging evidence supports a role for α2β1 integrin in cancer chemoresistance especially in hematological malignancies originating from the T cell lineage. In addition, α2β1 integrin has been associated with cancer stem cells. In this review, we will discuss the complex role of α2β1 integrin in these processes. Collagen is a major matrix protein of the tumor microenvironment and thus, understanding how α2β1 integrin regulates cancer pathogenesis is likely to lead to new therapeutic approaches and agents for cancer treatment.
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Affiliation(s)
- Dalila Naci
- Centre de recherche du CHU de Québec, Axe des maladies infectieuses et immunitaires and Département de Microbiologie-Immunologie, Faculté de Médecine, Université Laval, Québec, Canada
| | - Kristiina Vuori
- Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92037, USA
| | - Fawzi Aoudjit
- Centre de recherche du CHU de Québec, Axe des maladies infectieuses et immunitaires and Département de Microbiologie-Immunologie, Faculté de Médecine, Université Laval, Québec, Canada.
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Pseudorabies virus triggers glycoprotein gE-mediated ERK1/2 activation and ERK1/2-dependent migratory behavior in T cells. J Virol 2014; 89:2149-56. [PMID: 25473050 DOI: 10.1128/jvi.02549-14] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
UNLABELLED The interaction between viruses and immune cells of the host may lead to modulation of intracellular signaling pathways and to subsequent changes in cellular behavior that are of benefit for either virus or host. ERK1/2 (extracellular signal regulated kinase 1/2) signaling represents one of the key cellular signaling axes. Here, using wild-type and gE null virus, recombinant gE, and gE-transfected cells, we show that the gE glycoprotein of the porcine Varicellovirus pseudorabies virus (PRV) triggers ERK1/2 phosphorylation in Jurkat T cells and primary porcine T lymphocytes. PRV-induced ERK1/2 signaling resulted in homotypic T cell aggregation and increased motility of T lymphocytes. Our study reveals a new function of the gE glycoprotein of PRV and suggests that PRV, through activation of ERK1/2 signaling, has a substantial impact on T cell behavior. IMPORTANCE Herpesviruses are known to be highly successful in evading the immune system of their hosts, subverting signaling pathways of the host to their own advantage. The ERK1/2 signaling pathway, being involved in many cellular processes, represents a particularly attractive target for viral manipulation. Glycoprotein E (gE) is an important virulence factor of alphaherpesviruses, involved in viral spread. In this study, we show that gE has the previously uncharacterized ability to trigger ERK1/2 phosphorylation in T lymphocytes. We also show that virus-induced ERK1/2 signaling leads to increased migratory behavior of T cells and that migratory T cells can spread the infection to susceptible cells. In conclusion, our results point to a novel function for gE and suggest that virus-induced ERK1/2 activation may trigger PRV-carrying T lymphocytes to migrate and infect other cells susceptible to PRV replication.
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