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Chen H, Nio K, Tang H, Yamashita T, Okada H, Li Y, Doan PTB, Li R, Lv J, Sakai Y, Yamashita T, Mizukoshi E, Honda M, Kaneko S. BMP9-ID1 Signaling Activates HIF-1α and VEGFA Expression to Promote Tumor Angiogenesis in Hepatocellular Carcinoma. Int J Mol Sci 2022; 23:ijms23031475. [PMID: 35163396 PMCID: PMC8835914 DOI: 10.3390/ijms23031475] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/21/2022] [Accepted: 01/25/2022] [Indexed: 02/05/2023] Open
Abstract
Since hepatocellular carcinoma (HCC) is a typical hypervascular malignant tumor with poor prognosis, targeting angiogenesis is an important therapeutic strategy for advanced HCC. Involvement of bone morphologic protein 9 (BMP9), a transforming growth factor-beta superfamily member, has recently been reported in the development of liver diseases and angiogenesis. Here, we aimed to elucidate the role of BMP9 signaling in promoting HCC angiogenesis and to assess the antiangiogenic effect of BMP receptor inhibitors in HCC. By analyzing HCC tissue gene expression profiles, we found that BMP9 expression was significantly correlated with angiogenesis-associated genes, including HIF-1α and VEGFR2. In vitro, BMP9 induced HCC cell HIF-1α/VEGFA expression and VEGFA secretion. Silencing of the inhibitor of DNA-binding protein 1 (ID1), a transcription factor targeted by BMP9 signaling, suppressed BMP9-induced HIF-1α/VEGFA expression and VEGFA secretion, resulting in decreased human umbilical vein endothelial cell (HUVEC) lumen formation. BMP receptor inhibitors, which inhibit BMP9-ID1 signaling, suppressed BMP9-induced HIF-1α/VEGFA expression, VEGFA secretion, and HUVEC lumen formation. In vivo, the BMP receptor inhibitor LDN-212854 successfully inhibited HCC tumor growth and angiogenesis by inhibiting BMP9-ID1 signaling. In summary, BMP9-ID1 signaling promotes HCC angiogenesis by activating HIF-1α/VEGFA expression. Thus, targeting BMP9-ID1 signaling could be a pivotal therapeutic option for advanced HCC.
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Affiliation(s)
- Han Chen
- Center of Infectious Diseases, West China Hospital of Sichuan University, Chengdu 610041, China;
- Division of Infectious Diseases, State Key Laboratory of Biotherapy and Center of Infectious Diseases, West China Hospital of Sichuan University, Chengdu 610041, China
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa 9208641, Japan; (T.Y.); (H.O.); (Y.L.); (P.T.B.D.); (R.L.); (J.L.); (Y.S.); (T.Y.); (E.M.); (M.H.); (S.K.)
| | - Kouki Nio
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa 9208641, Japan; (T.Y.); (H.O.); (Y.L.); (P.T.B.D.); (R.L.); (J.L.); (Y.S.); (T.Y.); (E.M.); (M.H.); (S.K.)
- Correspondence: (K.N.); (H.T.); Tel.: +81-76-265-2235 (K.N.); +86-28-85422647 (H.T.); Fax: +81-76-234-4281 (K.N.); +86-28-85423052 (H.T.)
| | - Hong Tang
- Center of Infectious Diseases, West China Hospital of Sichuan University, Chengdu 610041, China;
- Division of Infectious Diseases, State Key Laboratory of Biotherapy and Center of Infectious Diseases, West China Hospital of Sichuan University, Chengdu 610041, China
- Correspondence: (K.N.); (H.T.); Tel.: +81-76-265-2235 (K.N.); +86-28-85422647 (H.T.); Fax: +81-76-234-4281 (K.N.); +86-28-85423052 (H.T.)
| | - Taro Yamashita
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa 9208641, Japan; (T.Y.); (H.O.); (Y.L.); (P.T.B.D.); (R.L.); (J.L.); (Y.S.); (T.Y.); (E.M.); (M.H.); (S.K.)
- Department of General Medicine, Kanazawa University Hospital, Kanazawa 9208641, Japan
| | - Hikari Okada
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa 9208641, Japan; (T.Y.); (H.O.); (Y.L.); (P.T.B.D.); (R.L.); (J.L.); (Y.S.); (T.Y.); (E.M.); (M.H.); (S.K.)
| | - Yingyi Li
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa 9208641, Japan; (T.Y.); (H.O.); (Y.L.); (P.T.B.D.); (R.L.); (J.L.); (Y.S.); (T.Y.); (E.M.); (M.H.); (S.K.)
| | - Phuong Thi Bich Doan
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa 9208641, Japan; (T.Y.); (H.O.); (Y.L.); (P.T.B.D.); (R.L.); (J.L.); (Y.S.); (T.Y.); (E.M.); (M.H.); (S.K.)
| | - Ru Li
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa 9208641, Japan; (T.Y.); (H.O.); (Y.L.); (P.T.B.D.); (R.L.); (J.L.); (Y.S.); (T.Y.); (E.M.); (M.H.); (S.K.)
| | - Junyan Lv
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa 9208641, Japan; (T.Y.); (H.O.); (Y.L.); (P.T.B.D.); (R.L.); (J.L.); (Y.S.); (T.Y.); (E.M.); (M.H.); (S.K.)
| | - Yoshio Sakai
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa 9208641, Japan; (T.Y.); (H.O.); (Y.L.); (P.T.B.D.); (R.L.); (J.L.); (Y.S.); (T.Y.); (E.M.); (M.H.); (S.K.)
| | - Tatsuya Yamashita
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa 9208641, Japan; (T.Y.); (H.O.); (Y.L.); (P.T.B.D.); (R.L.); (J.L.); (Y.S.); (T.Y.); (E.M.); (M.H.); (S.K.)
| | - Eishiro Mizukoshi
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa 9208641, Japan; (T.Y.); (H.O.); (Y.L.); (P.T.B.D.); (R.L.); (J.L.); (Y.S.); (T.Y.); (E.M.); (M.H.); (S.K.)
| | - Masao Honda
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa 9208641, Japan; (T.Y.); (H.O.); (Y.L.); (P.T.B.D.); (R.L.); (J.L.); (Y.S.); (T.Y.); (E.M.); (M.H.); (S.K.)
| | - Shuichi Kaneko
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa 9208641, Japan; (T.Y.); (H.O.); (Y.L.); (P.T.B.D.); (R.L.); (J.L.); (Y.S.); (T.Y.); (E.M.); (M.H.); (S.K.)
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Lu J, Zhao YL, Zhang XQ, Li LJ. The vascular endothelial growth factor signaling pathway regulates liver sinusoidal endothelial cells during liver regeneration after partial hepatectomy. Expert Rev Gastroenterol Hepatol 2021; 15:139-147. [PMID: 32902336 DOI: 10.1080/17474124.2020.1815532] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
INTRODUCTION Liver regeneration after partial hepatectomy is a very complex and well-regulated procedure. It utilizes all liver cell types, which are associated with signaling pathways involving growth factors, cytokines, and stimulatory and inhibitory feedback of several growth-related signals. Liver sinusoidal endothelial cells (LSECs) contribute to liver regeneration after partial hepatectomy. Vascular endothelial growth factor (VEGF) has various functions in LSECs. In this review, we summarize the relationship between VEGF and LSECs involving VEGF regulatory activity in the vascular endothelium. AREAS COVERED Maintenance of the fenestrated LSEC phenotype requires two VEGF pathways: VEGF stimulated-NO acting through the cGMP pathway and VEGF independent of nitric oxide (NO). The results suggest that VEGF is a key regenerating mediator of LSECs in the partial hepatectomy model. NO-independent pathway was also essential to the maintenance of the LSEC in liver regeneration. EXPERT OPINION Liver regeneration remains a fascinating and significative research field in recent years. The liver involved of molecular pathways except for LSEC-VEGF pathways that make the field of liver further depth studies should be put into effect to elaborate the undetermined confusions, which will be better to understand liver regeneration.
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Affiliation(s)
- Juan Lu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital of Medicine School, Zhejiang University , Hangzhou, China
| | - Ya-Lei Zhao
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital of Medicine School, Zhejiang University , Hangzhou, China
| | - Xiao-Qian Zhang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital of Medicine School, Zhejiang University , Hangzhou, China
| | - Lan-Juan Li
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital of Medicine School, Zhejiang University , Hangzhou, China
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Mak KM, Shin DW. Hepatic sinusoids versus central veins: Structures, markers, angiocrines, and roles in liver regeneration and homeostasis. Anat Rec (Hoboken) 2020; 304:1661-1691. [PMID: 33135318 DOI: 10.1002/ar.24560] [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] [Received: 07/27/2020] [Revised: 10/14/2020] [Accepted: 10/22/2020] [Indexed: 01/20/2023]
Abstract
The blood circulates through the hepatic sinusoids delivering nutrients and oxygen to the liver parenchyma and drains into the hepatic central vein, yet the structures and phenotypes of these vessels are distinctively different. Sinusoidal endothelial cells are uniquely fenestrated, lack basal lamina and possess organelles involved in endocytosis, pinocytosis, degradation, synthesis and secretion. Hepatic central veins are nonfenestrated but are also active in synthesis and secretion. Endothelial cells of sinusoids and central veins secrete angiocrines that play respective roles in hepatic regeneration and metabolic homeostasis. The list of markers for identifying sinusoidal endothelial cells is long and their terminologies are complex. Further, their uses vary in different investigations and, in some instances, could be confusing. Central vein markers are fewer but more distinctive. Here we analyze and categorize the molecular pathways/modules associated with the sinusoid-mediated liver regeneration in response to partial hepatectomy and chemical-induced acute or chronic injury. Similarly, we highlight the findings that central vein-derived angiocrines interact with Wnt/β-catenin in perivenous hepatocytes to direct gene expression and maintain pericentral metabolic zonation. The proposal that perivenous hepatocytes behave as stem/progenitor cells to provoke hepatic homeostatic cell renewal is reevaluated and newer concepts of broad zonal distribution of hepatocyte proliferation in liver homeostasis and regeneration are updated. Thus, this review integrates the structures, biology and physiology of liver sinusoids and central veins in mediating hepatic regeneration and metabolic homeostasis.
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Affiliation(s)
- Ki M Mak
- Department of Medical Education and Center for Anatomy and Functional Morphology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Da Wi Shin
- Department of Medical Education and Center for Anatomy and Functional Morphology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
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Dong ZR, Sun D, Yang YF, Zhou W, Wu R, Wang XW, Shi K, Yan YC, Yan LJ, Yao CY, Chen ZQ, Zhi XT, Li T. TMPRSS4 Drives Angiogenesis in Hepatocellular Carcinoma by Promoting HB-EGF Expression and Proteolytic Cleavage. Hepatology 2020; 72:923-939. [PMID: 31867749 DOI: 10.1002/hep.31076] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 12/01/2019] [Indexed: 12/15/2022]
Abstract
BACKGROUND AND AIMS Heparin-binding epidermal growth factor (HB-EGF), a member of the epidermal growth factor family, plays a pivotal role in the progression of several malignancies, but its role and regulatory mechanisms in hepatocellular carcinoma (HCC) remain obscure. Here, we report that transmembrane protease serine 4 (TMPRSS4) significantly enhanced the expression and proteolytic cleavage of HB-EGF to promote angiogenesis and HCC progression. APPROACH AND RESULTS A mechanistic analysis revealed that TMPRSS4 not only increased the transcriptional and translational levels of HB-EGF precursor, but also promoted its proteolytic cleavage by enhancing matrix metallopeptidase 9 expression through the EGF receptor/Akt/mammalian target of rapamycin/ hypoxia-inducible factor 1 α signaling pathway. In addition, HB-EGF promoted HCC proliferation and invasion by the EGF receptor/phosphoinositide 3-kinase/Akt signaling pathway. The level of HB-EGF in clinical samples of serum or HCC tissues from patients with HCC was positively correlated with the expression of TMPRSS4 and the microvessel density, and was identified as a prognostic factor for overall survival and recurrence-free survival, which suggests that HB-EGF can serve as a potential therapeutic target for HCC. More importantly, we provide a demonstration that treatment with the HB-EGF inhibitor cross-reacting material 197 alone or in combination with sorafenib can significantly suppress angiogenesis and HCC progression. CONCLUSIONS HB-EGF can be regulated by TMPRSS4 to promote HCC proliferation, invasion, and angiogenesis, and the combination of the HB-EGF inhibitor cross-reacting material 197 with sorafenib might be used for individualized treatment of HCC.
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Affiliation(s)
- Zhao-Ru Dong
- Department of General Surgery, Qilu Hospital, Shandong University, Jinan, China
| | - Dong Sun
- Department of General Surgery, Qilu Hospital, Shandong University, Jinan, China.,The First Central Clinical College, Tianjin Medical University, Tianjin, China
| | - Ya-Fei Yang
- Department of General Surgery, Qilu Hospital, Shandong University, Jinan, China
| | - Wei Zhou
- Department of General Surgery, Qilu Hospital, Shandong University, Jinan, China
| | - Rui Wu
- Department of General Surgery, Qilu Hospital, Shandong University, Jinan, China
| | - Xiao-Wei Wang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital, Shandong University, Jinan, China
| | - Kai Shi
- Department of General Surgery, Qilu Hospital, Shandong University, Jinan, China
| | - Yu-Chuan Yan
- Department of General Surgery, Qilu Hospital, Shandong University, Jinan, China
| | - Lun-Jie Yan
- Department of General Surgery, Qilu Hospital, Shandong University, Jinan, China
| | - Cheng-Yu Yao
- Department of General Surgery, Qilu Hospital, Shandong University, Jinan, China
| | - Zhi-Qiang Chen
- Department of General Surgery, Qilu Hospital, Shandong University, Jinan, China
| | - Xu-Ting Zhi
- Department of General Surgery, Qilu Hospital, Shandong University, Jinan, China
| | - Tao Li
- Department of General Surgery, Qilu Hospital, Shandong University, Jinan, China
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Roles of Id1/HIF-1 and CDK5/HIF-1 in cell cycle reentry induced by amyloid-beta peptide in post-mitotic cortical neuron. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2020; 1867:118628. [DOI: 10.1016/j.bbamcr.2019.118628] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 12/17/2019] [Accepted: 12/19/2019] [Indexed: 12/25/2022]
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6
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Bera R, Chiu MC, Huang YJ, Lin TH, Kuo MC, Shih LY. RUNX1 mutations promote leukemogenesis of myeloid malignancies in ASXL1-mutated leukemia. J Hematol Oncol 2019; 12:104. [PMID: 31640815 PMCID: PMC6805634 DOI: 10.1186/s13045-019-0789-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Accepted: 09/09/2019] [Indexed: 12/21/2022] Open
Abstract
Background Additional sex combs-like 1 (ASXL1) mutations have been described in all forms of myeloid neoplasms including chronic myelomonocytic leukemia (CMML) and associated with inferior outcomes, yet the molecular pathogenesis of ASXL1 mutations (ASXL1-MT) remains poorly understood. Transformation of CMML to secondary AML (sAML) is one of the leading causes of death in CMML patients. Previously, we observed that transcription factor RUNX1 mutations (RUNX1-MT) coexisted with ASXL1-MT in CMML and at myeloid blast phase of chronic myeloid leukemia. The contribution of RUNX1 mutations in the pathogenesis of myeloid transformation in ASXL1-mutated leukemia, however, remains unclear. Methods To evaluate the leukemogenic role of RUNX1-MT in ASXL1-mutated cells, we co-expressed RUNX1-MT (R135T) and ASXL1-MT (R693X) in different cell lines and performed immunoblot, co-immunoprecipitation, gene expression microarray, quantitative RT-PCR, cell proliferation, differentiation, and clonogenic assays for in vitro functional analyses. The in vivo effect was investigated using the C57BL/6 mouse bone marrow transplantation (BMT) model. Results Co-expression of two mutant genes increased myeloid stem cells in animal model, suggesting that cooperation of RUNX1 and ASXL1 mutations played a critical role in leukemia transformation. The expression of RUNX1 mutant in ASXL1-mutated myeloid cells augmented proliferation, blocked differentiation, and increased self-renewal activity. At 9 months post-BMT, mice harboring combined RUNX1 and ASXL1 mutations developed disease characterized by marked splenomegaly, hepatomegaly, and leukocytosis with a shorter latency. Mice transduced with both ASXL1 and RUNX1 mutations enhanced inhibitor of DNA binding 1 (ID1) expression in the spleen, liver, and bone marrow cells. Bone marrow samples from CMML showed that ID1 overexpressed in coexisted mutations of RUNX1 and ASXL1 compared to normal control and either RUNX1-MT or ASXL1-MT samples. Moreover, the RUNX1 mutant protein was more stable than WT and increased HIF1-α and its target ID1 gene expression in ASXL1 mutant cells. Conclusion The present study demonstrated the biological and functional evidence for the critical role of RUNX1-MT in ASXL1-mutated leukemia in the pathogenesis of myeloid malignancies.
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Affiliation(s)
- Rabindranath Bera
- Division of Hematology-Oncology, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Ming-Chun Chiu
- Division of Hematology-Oncology, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Ying-Jung Huang
- Division of Hematology-Oncology, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Tung-Huei Lin
- Division of Hematology-Oncology, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Ming-Chung Kuo
- Division of Hematology-Oncology, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan.,College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Lee-Yung Shih
- Division of Hematology-Oncology, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan. .,College of Medicine, Chang Gung University, Taoyuan, Taiwan. .,Division of Hematology-Oncology, Chang Gung Memorial Hospital, 199, Tung-Hwa North Road, Taipei, Taiwan, 10590.
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7
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Genome-wide association analysis for body weight identifies candidate genes related to development and metabolism in rainbow trout (Oncorhynchus mykiss). Mol Genet Genomics 2019; 294:563-571. [PMID: 30635785 DOI: 10.1007/s00438-018-1518-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 12/03/2018] [Indexed: 01/12/2023]
Abstract
Growth is one of the most important traits from both a physiological and economic perspective in aquaculture species. Thus, identifying the genomic regions and genes underpinning genetic variation for this trait is of particular interest in several fish species, including rainbow trout. In this work, we perform a genome-wide association study (GWAS) to identify the genomic regions associated with body weight at tagging (BWT) and at 18 months (BW18M) using a dense SNP panel (57 k) and 4596 genotyped rainbow trout from 105 full-sib families belonging to a Chilean breeding population. Analysis was performed by means of single-step GBLUP approach. Genetic variance explained by 20 adjacent SNP windows across the whole genome is reported. To further explore candidate genes, we focused on windows that explained the highest proportion of genetic variance in the top 10 chromosomes for each trait. The main window from the top 10 chromosomes was explored by BLAST using the first and last SNP position of each window to determine the target nucleotide sequence. As expected, the percentage of genetic variance explained by windows was relatively low, due to the polygenic nature of body weight. The most important genomic region for BWT and BW18M were located on chromosomes 15 and 24 and they explained 2.14% and 3.02% of the genetic variance for each trait, respectively. Candidate genes including several growth factors, genes involved in development of skeletal muscle and bone tissue and nutrient metabolism were identified within the associated regions for both traits BWT and BW18M. These results indicate that body weight is polygenic in nature in rainbow trout, with the most important loci explaining as much as 3% of the genetic variance for the trait. The genes identified here represent good candidates for further functional validation to uncover biological mechanisms underlying variation for growth in rainbow trout.
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Gomez-Roman N, Sahasrabudhe NM, McGregor F, Chalmers AJ, Cassidy J, Plumb J. Hypoxia-inducible factor 1 alpha is required for the tumourigenic and aggressive phenotype associated with Rab25 expression in ovarian cancer. Oncotarget 2017; 7:22650-64. [PMID: 26967059 PMCID: PMC5008389 DOI: 10.18632/oncotarget.7998] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Accepted: 02/16/2016] [Indexed: 01/06/2023] Open
Abstract
The small GTPase Rab25 has been functionally linked to tumour progression and aggressiveness in ovarian cancer and promotes invasion in three-dimensional environments. This type of migration has been shown to require the expression of the hypoxia-inducible factor 1 alpha (HIF-1α). In this report we demonstrate that Rab25 regulates HIF-1α protein expression in an oxygen independent manner in a panel of cancer cell lines. Regulation of HIF-1α protein expression by Rab25 did not require transcriptional upregulation, but was dependent on de novo protein synthesis through the Erbb2/ERK1/2 and p70S6K/mTOR pathways. Rab25 expression induced HIF-1 transcriptional activity, increased cisplatin resistance, and conferred intraperitoneal growth to the A2780 cell line in immunocompromised mice. Targeting HIF1 activity by silencing HIF-1β re-sensitised cells to cisplatin in vitro and reduced tumour formation of A2780-Rab25 expressing cells in vivo in a mouse ovarian peritoneal carcinomatosis model. Similar effects on cisplatin resistance in vitro and intraperitoneal tumourigenesis in vivo were obtained after HIF1b knockdown in the ovarian cancer cell line SKOV3, which expresses endogenous Rab25 and HIF-1α at atmospheric oxygen concentrations. Our results suggest that Rab25 tumourigenic potential and chemoresistance relies on HIF1 activity in aggressive and metastatic ovarian cancer. Targeting HIF-1 activity may potentially be effective either alone or in combination with standard chemotherapy for aggressive metastatic ovarian cancer.
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Affiliation(s)
- Natividad Gomez-Roman
- Wolfson Wohl Translational Cancer Research Centre, Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
| | | | - Fiona McGregor
- Wolfson Wohl Translational Cancer Research Centre, Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
| | - Anthony J Chalmers
- Wolfson Wohl Translational Cancer Research Centre, Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
| | - Jim Cassidy
- Wolfson Wohl Translational Cancer Research Centre, Institute of Cancer Sciences, University of Glasgow, Glasgow, UK.,Current address: VP Oncology at Bristol Myers Squibb, Princeton, New Jersey, USA
| | - Jane Plumb
- Wolfson Wohl Translational Cancer Research Centre, Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
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9
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Zou X, Zhang L, Yuan J, Yang C, Wu Z, Song J, Zhu W, Mao Y, Chen L. Endogenous hormone 2-methoxyestradiol suppresses venous hypertension-induced angiogenesis through up- and down-regulating p53 and id-1. J Cell Mol Med 2017; 22:957-967. [PMID: 29193609 PMCID: PMC5783857 DOI: 10.1111/jcmm.13399] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Accepted: 08/22/2017] [Indexed: 11/28/2022] Open
Abstract
Brain arteriovenous malformations (AVMs) which associate with angiogenesis due to local hypertension, chronic cerebral ischaemia and tissue hypoxia usually lead to haemorrhage, however, the therapeutic medicine for the disease is still lacking. 2‐methoxyestradiol (2‐ME) has been shown effective in the anti‐angiogenic treatment. This study was conducted to examine whether and how 2‐ME could improve the vascular malformations. Intracranial venous hypertension (VH) model produced in adult male Sprague‐Dawley rats and culture of human umbilical vein endothelial cells (HUVECs) at the anoxia condition were used to induce in vivo and in vitro angiogenesis, respectively. Lentiviral vectors of ID‐1 and p53 genes and of their siRNA were intracranially injected into rats and transfected into HUVECs to overexpress and down‐regulate these molecules. 2‐ME treatment not only reduced the in vivo progression of brain tissue angiogenesis in the intracranial VH rats and the in vitro increases in microvasculature formation, cellular migration and HIF‐1α expression induced by anoxia in HUVECs but also reversed the up‐regulation of ID‐1 and down‐regulation of p53 in both the in vivo and in vitro angiogenesis models. All of the anti‐angiogenesis effects of 2‐ME observed in VH rats and anoxic HUVECs were abrogated by ID‐1 overexpression and p53 knockdown. Our data collectively suggest that 2‐ME treatment inhibits hypoxia/anoxia‐induced angiogenesis dependently on ID‐1 down‐regulation and p53 up‐regulation, providing a potential alternative medical treatment for un‐ruptured AVM patients.
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Affiliation(s)
- Xiang Zou
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Li Zhang
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jie Yuan
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Chunjie Yang
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Zehan Wu
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Jianping Song
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Wei Zhu
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Ying Mao
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China.,State Key Laboratory of Medical Neurobiology, School of Basic Medical Sciences, Institutes of Brain Science, Fudan University, Shanghai, China
| | - Liang Chen
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
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Shin DH, Park JH, Lee JY, Won HY, Jang KS, Min KW, Jang SH, Woo JK, Oh SH, Kong G. Overexpression of Id1 in transgenic mice promotes mammary basal stem cell activity and breast tumorigenesis. Oncotarget 2016; 6:17276-90. [PMID: 25938540 PMCID: PMC4627307 DOI: 10.18632/oncotarget.3640] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Accepted: 04/06/2015] [Indexed: 11/25/2022] Open
Abstract
Inhibitor of differentiation/DNA binding (Id)1 is a crucial regulator of mammary development and breast cancer progression. However, its effect on stemness and tumorigenesis in mammary epithelial cells remains undefined. Herein, we demonstrate that Id1 induces mammary tumorigenesis by increasing normal and malignant mammary stem cell (MaSC) activities in transgenic mice. MaSC-enriched basal cell expansion and increased self-renewal and in vivo regenerative capacity of MaSCs are observed in the mammary glands of MMTV-Id1 transgenic mice. Furthermore, MMTV-Id1 mice develop ductal hyperplasia and mammary tumors with highly expressed basal markers. Id1 also increases breast cancer stem cell (CSC) population and activity in human breast cancer lines. Moreover, the effects of Id1 on normal and malignant stem cell activities are mediated by the Wnt/c-Myc pathway. Collectively, these findings provide in vivo genetic evidence of Id1 functions as an oncogene in breast cancer and indicate that Id1 regulates mammary basal stem cells by activating the Wnt/c-Myc pathway, thereby contributing to breast tumor development.
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Affiliation(s)
- Dong-Hui Shin
- Department of Pathology, College of Medicine, Hanyang University, Seoul, Republic of Korea
| | - Ji-Hye Park
- Institute for Bioengineering and Biopharmaceutical Research (IBBR), Hanyang University, Seoul, Republic of Korea
| | - Jeong-Yeon Lee
- Institute for Bioengineering and Biopharmaceutical Research (IBBR), Hanyang University, Seoul, Republic of Korea
| | - Hee-Young Won
- Department of Pathology, College of Medicine, Hanyang University, Seoul, Republic of Korea
| | - Ki-Seok Jang
- Department of Pathology, College of Medicine, Hanyang University, Seoul, Republic of Korea
| | - Kyueng-Whan Min
- Department of Pathology, College of Medicine, Hanyang University, Seoul, Republic of Korea
| | - Si-Hyong Jang
- Department of Pathology, College of Medicine, Hanyang University, Seoul, Republic of Korea
| | - Jong-Kyu Woo
- College of Pharmacy, Gachon University, Incheon, Republic of Korea
| | - Seung Hyun Oh
- College of Pharmacy, Gachon University, Incheon, Republic of Korea
| | - Gu Kong
- Department of Pathology, College of Medicine, Hanyang University, Seoul, Republic of Korea.,Institute for Bioengineering and Biopharmaceutical Research (IBBR), Hanyang University, Seoul, Republic of Korea
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11
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Edhayan G, Ohara RA, Stinson WA, Amin MA, Isozaki T, Ha CM, Haines GK, Morgan R, Campbell PL, Arbab AS, Friday SC, Fox DA, Ruth JH. Inflammatory properties of inhibitor of DNA binding 1 secreted by synovial fibroblasts in rheumatoid arthritis. Arthritis Res Ther 2016; 18:87. [PMID: 27071670 PMCID: PMC4830090 DOI: 10.1186/s13075-016-0984-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Accepted: 03/29/2016] [Indexed: 01/08/2023] Open
Abstract
Background Inhibitor of DNA binding 1 (Id1) is a nuclear protein containing a basic helix-loop-helix (bHLH) domain that regulates cell growth by selective binding and prevention of gene transcription. Sources of Id1 production in rheumatoid arthritis synovial tissue (RA ST) and its range of functional effects in RA remain to be clarified. Methods We analyzed Id1 produced from synovial fibroblasts and endothelial cells (ECs) with histology and real-time polymerase chain reaction (RT-PCR). Fibroblast supernatants subjected to differential centrifugation to isolate and purify exosomes were measured for Id1 by enzyme-linked immunosorbent assay (ELISA). Western blotting of Id1-stimulated ECs was performed to determine the kinetics of intracellular protein phosphorylation. EC intracellular signaling pathways induced by Id1 were subsequently targeted with silencing RNA (siRNA) for angiogenesis inhibition. Results By PCR and histologic analysis, we found that the primary source of Id1 in STs is from activated fibroblasts that correlate with inflammatory scores in human RA ST and in joints from K/BxN serum-induced mice. Normal (NL) and RA synovial fibroblasts increase Id1 production with stimulation by transforming growth factor beta (TGF-β). Most of the Id1 released by RA synovial fibroblasts is contained within exosomes. Endothelial progenitor cells (EPCs) and human dermal microvascular ECs (HMVECs) activate the Jnk signaling pathway in response to Id1, and Jnk siRNA reverses Id1-induced HMVEC vessel formation in Matrigel plugs in vivo. Conclusions Id1 is a pleotropic molecule affecting angiogenesis, vasculogenesis, and fibrosis. Our data shows that Id1 is not only an important nuclear protein, but also can be released from fibroblasts via exosomes. The ability of extracellular Id1 to activate signaling pathways expands the role of Id1 in the orchestration of tissue inflammation.
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Affiliation(s)
- Gautam Edhayan
- Division of Rheumatology, Department of Internal Medicine and Clinical Autoimmunity Center of Excellence, University of Michigan Medical School, 109 Zina Pitcher Drive, 4023 BSRB, Ann Arbor, MI, 48109-2200, USA
| | - Ray A Ohara
- Division of Rheumatology, Department of Internal Medicine and Clinical Autoimmunity Center of Excellence, University of Michigan Medical School, 109 Zina Pitcher Drive, 4023 BSRB, Ann Arbor, MI, 48109-2200, USA
| | - W Alex Stinson
- Division of Rheumatology, Department of Internal Medicine and Clinical Autoimmunity Center of Excellence, University of Michigan Medical School, 109 Zina Pitcher Drive, 4023 BSRB, Ann Arbor, MI, 48109-2200, USA
| | - M Asif Amin
- Division of Rheumatology, Department of Internal Medicine and Clinical Autoimmunity Center of Excellence, University of Michigan Medical School, 109 Zina Pitcher Drive, 4023 BSRB, Ann Arbor, MI, 48109-2200, USA
| | - Takeo Isozaki
- Division of Rheumatology, Department of Internal Medicine and Clinical Autoimmunity Center of Excellence, University of Michigan Medical School, 109 Zina Pitcher Drive, 4023 BSRB, Ann Arbor, MI, 48109-2200, USA
| | - Christine M Ha
- Division of Rheumatology, Department of Internal Medicine and Clinical Autoimmunity Center of Excellence, University of Michigan Medical School, 109 Zina Pitcher Drive, 4023 BSRB, Ann Arbor, MI, 48109-2200, USA
| | | | - Rachel Morgan
- Division of Rheumatology, Department of Internal Medicine and Clinical Autoimmunity Center of Excellence, University of Michigan Medical School, 109 Zina Pitcher Drive, 4023 BSRB, Ann Arbor, MI, 48109-2200, USA
| | - Phillip L Campbell
- Division of Rheumatology, Department of Internal Medicine and Clinical Autoimmunity Center of Excellence, University of Michigan Medical School, 109 Zina Pitcher Drive, 4023 BSRB, Ann Arbor, MI, 48109-2200, USA
| | - Ali S Arbab
- Henry Ford Hospital, Detroit, MI, 48202, USA
| | - Sean C Friday
- Division of Rheumatology, Department of Internal Medicine and Clinical Autoimmunity Center of Excellence, University of Michigan Medical School, 109 Zina Pitcher Drive, 4023 BSRB, Ann Arbor, MI, 48109-2200, USA
| | - David A Fox
- Division of Rheumatology, Department of Internal Medicine and Clinical Autoimmunity Center of Excellence, University of Michigan Medical School, 109 Zina Pitcher Drive, 4023 BSRB, Ann Arbor, MI, 48109-2200, USA
| | - Jeffrey H Ruth
- Division of Rheumatology, Department of Internal Medicine and Clinical Autoimmunity Center of Excellence, University of Michigan Medical School, 109 Zina Pitcher Drive, 4023 BSRB, Ann Arbor, MI, 48109-2200, USA.
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12
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Wen D, Zou YF, Gao YH, Zhao Q, Xie YY, Shen PY, Xu YW, Xu J, Chen YX, Feng XB, Shi H, Zhang W. Inhibitor of DNA Binding 1 Is Induced during Kidney Ischemia-Reperfusion and Is Critical for the Induction of Hypoxia-Inducible Factor-1α. BIOMED RESEARCH INTERNATIONAL 2016; 2016:4634386. [PMID: 27127787 PMCID: PMC4835634 DOI: 10.1155/2016/4634386] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2015] [Revised: 02/25/2016] [Accepted: 02/28/2016] [Indexed: 01/18/2023]
Abstract
In this study, rat models of acute kidney injury (AKI) induced by renal ischemia-reperfusion (I/R) and HK-2 cell models of hypoxia-reoxygenation (H/R) were established to investigate the expression of inhibitor of DNA binding 1 (ID1) in AKI, and the regulation relationship between ID1 and hypoxia-inducible factor 1 alpha (HIF-1α). Through western blot, quantitative real-time PCR, immunohistochemistry, and other experiment methods, the induction of ID1 after renal I/R in vivo was observed, which was expressed mainly in renal tubular epithelial cells (TECs). ID1 expression was upregulated in in vitro H/R models at both the protein and mRNA levels. Via RNAi, it was found that ID1 induction was inhibited with silencing of HIF-1α. Moreover, the suppression of ID1 mRNA expression could lead to decreased expression and transcription of HIF-1α during hypoxia and reoxygenation. In addition, it was demonstrated that both ID1 and HIF-1α can regulate the transcription of twist. This study demonstrated that ID1 is induced in renal TECs during I/R and can regulate the transcription and expression of HIF-1α.
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Affiliation(s)
- Dan Wen
- Department of Nephrology, Ruijin Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200025, China
| | - Yan-Fang Zou
- Department of Nephrology, Ruijin Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200025, China
| | - Yao-Hui Gao
- Department of Science and Education, MinHang Central Hospital, Shanghai, China
| | - Qian Zhao
- Shanghai Universities E-Institute for Chemical Biology, Key Laboratory of Cell Differentiation and Apoptosis of National Ministry of Education, School of Medicine, Shanghai Jiaotong University, Shanghai 200025, China
| | - Yin-Yin Xie
- Shanghai Institute of Hematology, Shanghai, China
| | - Ping-Yan Shen
- Department of Nephrology, Ruijin Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200025, China
| | - Yao-Wen Xu
- Department of Nephrology, Ruijin Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200025, China
| | - Jing Xu
- Department of Nephrology, Ruijin Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200025, China
| | - Yong-Xi Chen
- Department of Nephrology, Ruijin Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200025, China
| | - Xiao-Bei Feng
- Department of Nephrology, Ruijin Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200025, China
| | - Hao Shi
- Department of Nephrology, Ruijin Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200025, China
| | - Wen Zhang
- Department of Nephrology, Ruijin Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200025, China
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The Wnt/β-catenin signaling/Id2 cascade mediates the effects of hypoxia on the hierarchy of colorectal-cancer stem cells. Sci Rep 2016; 6:22966. [PMID: 26965643 PMCID: PMC4786801 DOI: 10.1038/srep22966] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Accepted: 02/22/2016] [Indexed: 01/03/2023] Open
Abstract
Hypoxia, a feature common to most solid tumors, is known to regulate many aspects of tumorigenesis. Recently, it was suggested that hypoxia increased the size of the cancer stem-cell (CSC) subpopulations and promoted the acquisition of a CSC-like phenotype. However, candidate hypoxia-regulated mediators specifically relevant to the stemness-related functions of colorectal CSCs have not been examined in detail. In the present study, we showed that hypoxia specifically promoted the self-renewal potential of CSCs. Through various in vitro studies, we found that hypoxia-induced Wnt/β-catenin signaling increased the occurrence of CSC-like phenotypes and the level of Id2 expression in colorectal-cancer cells. Importantly, the levels of hypoxia-induced CSC-sphere formation and Id2 expression were successfully attenuated by treatment with a Wnt/β-catenin-signaling inhibitor. We further demonstrated, for the first time, that the degree of hypoxia-induced CSC-sphere formation (CD44(+) subpopulation) in vitro and of tumor metastasis/dissemination in vivo were markedly suppressed by knocking down Id2 expression. Taken together, these data suggested that Wnt/β-catenin signaling mediated the hypoxia-induced self-renewal potential of colorectal-cancer CSCs through reactivating Id2 expression.
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14
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Tsou PS, Rabquer BJ, Ohara RA, Stinson WA, Campbell PL, Amin MA, Balogh B, Zakhem G, Renauer PA, Lozier A, Arasu E, Haines GK, Kahaleh B, Schiopu E, Khanna D, Koch AE. Scleroderma dermal microvascular endothelial cells exhibit defective response to pro-angiogenic chemokines. Rheumatology (Oxford) 2015; 55:745-54. [PMID: 26705326 DOI: 10.1093/rheumatology/kev399] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVES Angiogenesis plays a critical role in SSc (scleroderma). The aim of this study was to examine the expression of growth-regulated protein-γ (Gro-γ/CXCL3), granulocyte chemotactic protein 2 (GCP-2/CXCL6) and their receptor CXCR2 in endothelial cells (ECs) isolated from SSc skin and determine whether these cells mount an angiogenic response towards pro-angiogenic chemokines. The downstream signalling pathways as well as the pro-angiogenic transcription factor inhibitor of DNA-binding protein 1 (Id-1) were also examined. METHODS Skin biopsies were obtained from patients with dcSSc. ECs were isolated via magnetic positive selection. Angiogenesis was measured by EC chemotaxis assay. RESULTS Gro-γ/CXCL3 and GCP-2/CXCL6 were minimally expressed in both skin types but elevated in SSc serum. Pro-angiogenic chemokine mRNA was greater in SSc ECs than in normal ECs. SSc ECs did not migrate to vascular endothelial growth factor (VEGF), Gro-γ/CXCL3, GCP-2/CXCL6 or CXCL16. The signalling pathways stimulated by these chemokines were also dysregulated. Id-1 mRNA in SSc ECs was lower compared with normal ECs, and overexpression of Id-1 in SSc ECs increased their ability to migrate towards VEGF and CXCL16. CONCLUSION Our results show that SSc ECs are unable to respond to pro-angiogenic chemokines despite their increased expression in serum and ECs. This might be due to the differences in the signalling pathways activated by these chemokines in normal vs SSc ECs. In addition, the lower expression of Id-1 also decreases the angiogenic response. The inability of pro-angiogenic chemokines to promote EC migration provides an additional mechanism for the impaired angiogenesis that characterizes SSc.
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Affiliation(s)
- Pei-Suen Tsou
- Division of Rheumatology, Department of Internal Medicine, University of Michigan Scleroderma Program,
| | - Bradley J Rabquer
- Division of Rheumatology, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Biology Department, Albion College, Albion, MI
| | - Ray A Ohara
- Division of Rheumatology, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
| | - William A Stinson
- Division of Rheumatology, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
| | - Phillip L Campbell
- Division of Rheumatology, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
| | - M Asif Amin
- Division of Rheumatology, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
| | - Beatrix Balogh
- Division of Rheumatology, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
| | - George Zakhem
- Division of Rheumatology, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
| | - Paul A Renauer
- Division of Rheumatology, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
| | - Ann Lozier
- Division of Rheumatology, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
| | - Eshwar Arasu
- Division of Rheumatology, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
| | | | - Bashar Kahaleh
- Department of Medicine, University of Toledo Medical Center, Toledo, OH and
| | - Elena Schiopu
- Division of Rheumatology, Department of Internal Medicine, University of Michigan Scleroderma Program
| | - Dinesh Khanna
- Division of Rheumatology, Department of Internal Medicine, University of Michigan Scleroderma Program
| | - Alisa E Koch
- Division of Rheumatology, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, VA Medical Service, Ann Arbor, MI, USA
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Zou X, Zhou L, Zhu W, Mao Y, Chen L. Effectiveness of 2-methoxyestradiol in alleviating angiogenesis induced by intracranial venous hypertension. J Neurosurg 2015; 125:746-53. [PMID: 26654177 DOI: 10.3171/2015.6.jns15159] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECT Intracranial dural arteriovenous fistulas (DAVFs) are complex intracranial vascular malformations that can lead to hemorrhage. The authors recently found that chronic local hypoperfusion seems to be the main cause of angiogenesis in the dura mater, which leads to the formation of DAVFs. As a natural derivative of estradiol, 2-methoxyestradiol (2-ME) has an antiangiogenic effect and can be used safely in patients with advanced carcinoid tumors. This study was conducted to examine the antiangiogenic effects of 2-ME on a rat DAVF model. METHODS Male Sprague-Dawley rats (n = 72) were used in the experiments. Intracranial venous hypertension was induced for modeling, and 2-ME was used in the early or late stage for treatment. The effects were examined by immunohistochemistry, Western blot analysis, and quantitative real-time polymerase chain reaction assays. RESULTS 2-Methoxyestradiol significantly reduced angiogenesis in the dura in early- and late-intervention treatment groups, as proven by the results of immunohistochemical staining, Western blotting, real-time polymerase chain reaction assays, and microvessel density counts. The antiangiogenic effect even lasted for up to 2 weeks after 2-ME cessation. CONCLUSIONS These data collectively suggest that 2-ME can reduce the angiogenic effect caused by venous hypertension in a rat DAVF model, mainly by suppressing the inhibitor of differentiation 1 (ID-1) and hypoxia-inducible factor 1α (HIF-1α) pathways.
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Affiliation(s)
- Xiang Zou
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Liangfu Zhou
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Wei Zhu
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Ying Mao
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Liang Chen
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
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16
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Hung YH, Chang SH, Huang CT, Yin JH, Hwang CS, Yang LY, Yang DI. Inhibitor of Differentiation-1 and Hypoxia-Inducible Factor-1 Mediate Sonic Hedgehog Induction by Amyloid Beta-Peptide in Rat Cortical Neurons. Mol Neurobiol 2014; 53:793-809. [PMID: 25502463 DOI: 10.1007/s12035-014-9046-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Accepted: 12/02/2014] [Indexed: 12/21/2022]
Abstract
One major pathological hallmark of Alzheimer's disease (AD) is the accumulation of senile plaques mainly composed of neurotoxic amyloid beta-peptide (Aβ) in the patients' brains. Sonic hedgehog (SHH) is a morphogen critically involved in the embryonic development of the central nervous system (CNS). In the present study, we tested whether Aβ may induce SHH expression and explored its underlying mechanisms. We found that both Aβ25-35 and Aβ1-42 enhanced SHH expression in the primary cortical neurons derived from fetal rat brains. Immunohistochemistry revealed heightened expression of SHH in the cortex and hippocampus of aged (9 and 12 months old) AD transgenic mouse brains as compared to age-matched littermate controls. Chromatin immunoprecipitation (ChIP) assay demonstrated that Aβ25-35 enhanced binding of hypoxia-inducible factor-1 (HIF-1) to the promoter of the Shh gene in primary cortical cultures; consistently, Aβ25-35 induction of SHH was abolished by HIF-1α small interfering RNA (siRNA). Aβ25-35 also time-dependently induced inhibitor of differentiation-1 (Id1) that has been shown to stabilize HIF-1α; further, Aβ25-35-mediated induction of HIF-1α and SHH was both suppressed by Id1 siRNA. Pharmacological induction of HIF-1α by cobalt chloride and application of the cell-permeable recombinant Id1 proteins were both sufficient to induce SHH expression. Finally, both the SHH pathway inhibitor cyclopamine and its neutralizing antibody attenuated Aβ cytotoxicity, albeit to a minor extent. These results thus established a signaling cascade of "Aβ → Id1 → HIF-1 → SHH" in primary rat cortical cultures; furthermore, SHH may in part contribute to Aβ neurotoxicity.
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Affiliation(s)
- Yu-Hsing Hung
- Institute of Brain Science and Brain Research Center, National Yang-Ming University, No. 155, Section 2, Linong Street, Beitou District, Taipei City, 11221, Taiwan
| | - Shih-Hsin Chang
- Institute of Brain Science and Brain Research Center, National Yang-Ming University, No. 155, Section 2, Linong Street, Beitou District, Taipei City, 11221, Taiwan
| | - Chao-Tzu Huang
- Institute of Brain Science and Brain Research Center, National Yang-Ming University, No. 155, Section 2, Linong Street, Beitou District, Taipei City, 11221, Taiwan
| | - Jiu-Haw Yin
- Department of Neurology, Cheng Hsin General Hospital, Taipei City, 11212, Taiwan
| | - Chi-Shin Hwang
- Department of Neurology, Taipei City Hospital, Taipei City, 10341, Taiwan
| | - Liang-Yo Yang
- Department of Physiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei City, 11031, Taiwan
| | - Ding-I Yang
- Institute of Brain Science and Brain Research Center, National Yang-Ming University, No. 155, Section 2, Linong Street, Beitou District, Taipei City, 11221, Taiwan.
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17
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ID proteins regulate diverse aspects of cancer progression and provide novel therapeutic opportunities. Mol Ther 2014; 22:1407-1415. [PMID: 24827908 DOI: 10.1038/mt.2014.83] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Accepted: 04/28/2014] [Indexed: 12/12/2022] Open
Abstract
The inhibitor of differentiation (ID) proteins are helix-loop-helix transcriptional repressors with established roles in stem cell self-renewal, lineage commitment, and niche interactions. While deregulated expression of ID proteins in cancer was identified more than a decade ago, emerging evidence has revealed a central role for ID proteins in neoplastic progression of multiple tumor types that often mirrors their function in physiological stem and progenitor cells. ID proteins are required for the maintenance of cancer stem cells, self-renewal, and proliferation in a range of malignancies. Furthermore, ID proteins promote metastatic dissemination through their role in remodeling the tumor microenvironment and by promoting tumor-associated endothelial progenitor cell proliferation and mobilization. Here, we discuss the latest findings in this area and the clinical opportunities that they provide.
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18
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Inhibitor of differentiation 1 is a candidate prognostic marker in multicentric Castleman’s disease. Ann Hematol 2014; 93:1177-83. [DOI: 10.1007/s00277-014-2024-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2013] [Accepted: 01/27/2014] [Indexed: 02/02/2023]
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19
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Mineva ND, Paulson KE, Naber SP, Yee AS, Sonenshein GE. Epigallocatechin-3-gallate inhibits stem-like inflammatory breast cancer cells. PLoS One 2013; 8:e73464. [PMID: 24039951 PMCID: PMC3770659 DOI: 10.1371/journal.pone.0073464] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Accepted: 07/22/2013] [Indexed: 01/09/2023] Open
Abstract
Inflammatory Breast Cancer (IBC) is a highly aggressive form of cancer characterized by high rates of proliferation, lymphangiogenesis and metastasis, and an overall poor survival. As regular green tea consumption has been associated with improved prognosis of breast cancer patients, including decreased risk of recurrence, here the effects of the green tea polyphenol epigallocatechin-3-gallate (EGCG) were tested on two IBC lines: SUM-149 and SUM-190. EGCG decreased expression of genes that promote proliferation, migration, invasion, and survival. Consistently, growth, invasive properties, and survival of IBC cells were reduced by EGCG treatment. EGCG also reduced lymphangiogenesis-promoting genes, in particular VEGF-D. Conditioned media from EGCG-treated IBC cells displayed decreased VEGF-D secretion and reduced ability to promote lymphangiogenesis in vitro as measured by hTERT-HDLEC lymphatic endothelial cell migration and tube formation. Tumorsphere formation by SUM-149 cells was robustly inhibited by EGCG, suggesting effects on self-renewal ability. Stem-like SUM-149 cells with high aldehyde dehydrogenase (ALDH) activity, previously implicated in poor patient prognosis, were isolated. EGCG treatment reduced growth and induced apoptosis of the stem-like SUM-149 cells in culture. In an orthotopic mouse model, EGCG decreased growth of pre-existing tumors derived from ALDH-positive stem-like SUM-149 cells and their expression of VEGF-D, which correlated with a significant decrease in peritumoral lymphatic vessel density. Thus, EGCG inhibits the overall aggressive IBC phenotype. Reduction of the stem-like cell compartment by EGCG may explain the decreased risk of breast cancer recurrence among green tea drinkers. Recent clinical trials demonstrate the efficacy of green tea polyphenol extracts in treatment of prostate cancer and lymphocytic leukemia with low toxicity. Given the poor prognosis of IBC patients, our findings suggest further exploration of EGCG or green tea in combinatorial treatments against active IBC disease or in maintenance regimens to avoid recurrence is warranted.
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Affiliation(s)
- Nora D. Mineva
- Department of Biochemistry, Tufts University School of Medicine, Boston, Massachusetts, United States of America
| | - K. Eric Paulson
- Department of Biochemistry, Tufts University School of Medicine, Boston, Massachusetts, United States of America
| | - Stephen P. Naber
- Department of Pathology and Laboratory Medicine, Tufts Medical Center, Boston, Massachusetts, United States of America
| | - Amy S. Yee
- Department of Biochemistry, Tufts University School of Medicine, Boston, Massachusetts, United States of America
| | - Gail E. Sonenshein
- Department of Biochemistry, Tufts University School of Medicine, Boston, Massachusetts, United States of America
- * E-mail:
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Du S, Wang S, Wu Q, Hu J, Li T. Decorin inhibits angiogenic potential of choroid-retinal endothelial cells by downregulating hypoxia-induced Met, Rac1, HIF-1α and VEGF expression in cocultured retinal pigment epithelial cells. Exp Eye Res 2013; 116:151-60. [PMID: 24016866 DOI: 10.1016/j.exer.2013.08.019] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2013] [Revised: 08/17/2013] [Accepted: 08/27/2013] [Indexed: 01/10/2023]
Abstract
Choroidal neovascularization (CNV) is one of the most common causes of severe vision loss. Decorin, a multiple receptor tyrosine kinase inhibitor, has been recently shown to play an important regulatory role in angiogenic response. This study aims to investigate whether the overexpression of decorin in retinal pigment epithelial (RPE) cells under hypoxia alters the in vitro angiogenic ability of cocultured choroid-retinal endothelial cells and to explore the possible mechanisms involved. Human RPE cells (ARPE-19) were subjected to hypoxia with or without decorin pretreatment, and RNA interference technique was used to knock down the Met gene in ARPE-19 cells. Cell viability was determined using the Cell Counting Kit-8 assay. Expression of Met, Rac1 and hypoxia-inducible factor-1 alpha (HIF-1α) was evaluated by western blot and quantitative real-time polymerase chain reaction (qRT-PCR). Vascular endothelial growth factor (VEGF) expression was evaluated by enzyme-linked immunosorbent assay (ELISA) and qRT-PCR. We then constructed a recombinant lentiviral vector carrying the decorin gene to transduce ARPE-19 cells. The overexpression of decorin in transduced RPE cells was confirmed by qRT-PCR and western blot. The transduced RPE cells were then cocultured with rhesus macaque choroid-retinal endothelial cells (RF/6A) in a transwell coculture system to observe the effects of decorin overexpression in ARPE-19 cells on the proliferation, migration and tube formation of RF/6A cells. In response to hypoxia, the VEGF concentrations in the culture supernatants increased greatly at 24 and 48 h, and this effect was inhibited significantly and nearly equally in the presence of 50-200 nM decorin. Decorin pretreatment before hypoxia exposure effectively reduced the hypoxia-induced expression of Met, Rac1, HIF-1α and VEGF in ARPE-19 cells. Transfection of small interfering RNA against Met to ARPE-19 cells also resulted in significant downregulation of Rac1, HIF-1α and VEGF under hypoxia, and this effect was similar to that noted with decorin pretreatment alone or with their combination. Results from the coculture system showed that the overexpression of decorin in ARPE-19 cells significantly inhibited the proliferation, migration and tube formation of RF/6A cells. These results indicate that Met pathway activation plays an important role in the upregulation of VEGF in RPE cells under hypoxia. Decorin may interfere with angiogenesis by downregulating hypoxia-induced Met, Rac1, HIF-1α and VEGF expression in RPE cells, which suggests a potential strategy for the inhibition of CNV.
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Affiliation(s)
- Shanshan Du
- Department of Ophthalmology, The Sixth People's Hospital, Shanghai Jiaotong University, 600 Yishan Road, Shanghai 200233, China
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Abstract
Liver sinusoidal endothelial cells (LSECs) have long been noted to contribute to liver regeneration after liver injury. In normal liver, the major cellular source of HGF is the hepatic stellate cell, but after liver injury, HGF expression has been thought to increase markedly in proliferating LSECs. However, emerging data suggest that even after injury, LSEC expression of HGF does not increase greatly. In contrast, bone marrow progenitor cells of LSECs (BM SPCs), which are rich in HGF, are recruited to the liver after injury. This Review examines liver regeneration from the perspective that BM SPCs that have been recruited to the liver, rather than mature LSECs, drive liver regeneration.
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Affiliation(s)
- Laurie D DeLeve
- Division of Gastrointestinal and Liver Diseases and USC Research Center for Liver Disease, Keck School of the University of Southern California, Los Angeles, California 90033, USA.
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Tian WX, Li JK, Qin P, Wang R, Ning GB, Qiao JG, Li HQ, Bi DR, Pan SY, Guo DZ. Screening of differentially expressed genes in the growth plate of broiler chickens with tibial dyschondroplasia by microarray analysis. BMC Genomics 2013; 14:276. [PMID: 23617778 PMCID: PMC3648502 DOI: 10.1186/1471-2164-14-276] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2012] [Accepted: 04/18/2013] [Indexed: 12/18/2022] Open
Abstract
Background Tibial dyschondroplasia (TD) is a common skeletal disorder in broiler chickens. It is characterized by the presence of a non-vascularized and unmineralized cartilage in the growth plate. Previous studies have investigated differential expression of genes related to cartilage development during latter stages of TD. The aim of our study was to identify differentially expressed genes (DEGs) in the growth plate of broiler chickens, which were associated with early stage TD. We induced TD using tetramethylthiuram disulfide (thiram) for 1, 2, and 6 days and determined DEGs with chicken Affymetrix GeneChip assays. The identified DEGs were verified by quantitative polymerase chain reaction (qPCR) assays. Results We identified 1630 DEGs, with 82, 1385, and 429 exhibiting at least 2.0-fold changes (P < 0.05) at days 1, 2, and 6, respectively. These DEGs participate in a variety of biological processes, including cytokine production, oxidation reduction, and cell surface receptor linked signal transduction on day 1; lipid biosynthesis, regulation of growth, cell cycle, positive and negative gene regulation, transcription and transcription regulation, and anti-apoptosis on day 2; and regulation of cell proliferation, transcription, dephosphorylation, catabolism, proteolysis, and immune responses on day 6. The identified DEGs were associated with the following pathways: neuroactive ligand-receptor interaction on day 1; synthesis and degradation of ketone bodies, terpenoid backbone biosynthesis, ether lipid metabolism, JAK-STAT, GnRH signaling pathway, ubiquitin mediated proteolysis, TGF-β signaling, focal adhesion, and Wnt signaling on day 2; and arachidonic acid metabolism, mitogen-activated protein kinase (MAPK) signaling, JAK-STAT, insulin signaling, and glycolysis on day 6. We validated seven DEGs by qPCR. Conclusions Our findings demonstrate previously unrecognized changes in gene transcription associated with early stage TD. The DEGs we identified by microarray analysis will be used in future studies to clarify the molecular pathogenic mechanisms of TD. From these findings, potential pathways involved in early stage TD warrant further investigation.
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Affiliation(s)
- Wen-xia Tian
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
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Park MJ, Park SH, Moon SE, Koo JS, Moon HS, Joo BS. Decreased Expression of Inhibitor of DNA-binding (Id) Proteins and Vascular Endothelial Growth Factor and Increased Apoptosis in Ovarian Aging. Dev Reprod 2013; 17:17-24. [PMID: 25949117 PMCID: PMC4282215 DOI: 10.12717/dr.2013.17.1.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2013] [Revised: 02/07/2013] [Accepted: 03/05/2013] [Indexed: 11/17/2022]
Abstract
This study examined the expression of inhibitor of DNA-binding (Id) proteins and vascular endothelial growth factor (VEGF) in the ovary according to female age using a mice model as the first step in investigating the potential role of Ids and VEGF in ovarian aging. C57BL inbred female mice of three age groups (6-9, 14-16, and 23-26 weeks) were injected with 5 IU pregnant mare’s serum gonadotropin (PMSG) in order to synchronize the estrus cycle. After 48 h, ovarian expression of Ids and VEGF was analyzed by reverse transcriptase-polymerase chain reaction (RT-PCR), western blot and immunohistochemistry. Ovarian apoptosis was examined by ovarian expression of Bcl-2 and Bcl-xL. Expression of Id-1 and VEGF was decreased with advancing female age, but not Id-2, Id-3, and Id-4. In particular, their expressions were significantly decreased in aged mice of 23-26 weeks compared with the young mice of 6-9 weeks (p < 0.05). In contrast, ovarian apoptosis was greatly increased in the aged mice compared to the young mice. This result suggests that Id-1 may have an implicated role in ovarian aging by associating with VEGF.
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Affiliation(s)
- Min Jung Park
- Center for Reproductive Medicine, Good Moonhwa Hospital, Busan 601-803, Korea
| | - Sea Hee Park
- Center for Reproductive Medicine, Good Moonhwa Hospital, Busan 601-803, Korea
| | - Sung Eun Moon
- Department of Obstetrics and Gynecology, Good Moonhwa Hospital, Busan 601-803, Korea
| | - Ja Seong Koo
- Department of Obstetrics and Gynecology, Good Moonhwa Hospital, Busan 601-803, Korea
| | - Hwa Sook Moon
- Department of Obstetrics and Gynecology, Good Moonhwa Hospital, Busan 601-803, Korea
| | - Bo Sun Joo
- Center for Reproductive Medicine, Good Moonhwa Hospital, Busan 601-803, Korea
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Park SS, Park MJ, Joo BS, Joo JK, Son JB, Lee KS. Improvement of ovarian response and oocyte quality of aged female by administration of bone morphogenetic protein-6 in a mouse model. Reprod Biol Endocrinol 2012; 10:117. [PMID: 23273273 PMCID: PMC3551793 DOI: 10.1186/1477-7827-10-117] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2012] [Accepted: 12/21/2012] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Advancing female age remains a difficult problem in infertility treatment. Ovarian angiogenesis plays an important role in follicular development and the activation of ovarian angiogenesis has been emerged as a new strategy for the improvement of age-related decline of oocyte quality. BMP-6 affect gonadotropin signals in granulosa cells and it promotes normal fertility by enabling appropriate response to LH and normal oocyte quality. BMP-6 has a potential role in regulation of angiogenesis and regulates the expression of inhibitor of DNA-binding proteins (Ids). Ids involved in the control and timing of follicle selection and granulosa cells differentiation. Especially, Id-1 is well-characterized target of BMP-6 signaling. Therefore, this study investigated whether co-administration of BMP-6 during superovulation process improves ovarian response, oocyte quality and expression of Id-1 and vascular endothelial growth factor (VEGF) in the ovary of aged female using a mouse model. METHODS Aged C57BL/6 female mice (26-31 weeks old) were superovulated by injection with 0.1 mL of 5 IU equine chorionic gonadotropin (eCG) containing recombinant mouse BMP-6 at various doses (0, 0.01, 0.1, 1, and 10 ng), followed by injection with 5 IU human chorionic gonadotropin (hCG) 48 h later. Then, the mice were immediately paired with an individual male. The aged control group was superovulated without BMP-6. Young mice of 6-9 weeks old were superovulated without BMP-6 as a positive control for superovulation and in vitro culture of embryos. Eighteen hours after hCG injection, zygotes were retrieved and cultured for 4 days. Both ovaries of each mouse were provided in the examination of ovarian expression of Id-1 and VEGF by reverse transcriptase-polymerase chain reaction, western blot, and immunohistochemistry. RESULTS Administration of 0.1 ng BMP-6 significantly increased the number and blastocyst formation rate of oocytes ovulated and ovarian expression of Id-1 and VEGF compared to aged control mice. These increased levels were comparable to those of young control mice. CONCLUSIONS This result suggests that BMP-6 during ovulation induction plays an important role in improvement of oocyte quality and ovarian response of aged female, possibly by regulating of ovarian Id-1 and VEGF expression.
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Affiliation(s)
- Seung S Park
- Department of Obstetrics and Gynecology, Medical Research Institute, Pusan National University School of Medicine, Busan, Korea
| | - Min J Park
- Center for Reproductive Medicine, Good Moonhwa Hospital, Busan, Korea
| | - Bo S Joo
- Center for Reproductive Medicine, Good Moonhwa Hospital, Busan, Korea
| | - Jong K Joo
- Department of Obstetrics and Gynecology, Medical Research Institute, Pusan National University School of Medicine, Busan, Korea
| | - Jung B Son
- Department of Obstetrics and Gynecology, Medical Research Institute, Pusan National University School of Medicine, Busan, Korea
| | - Kyu S Lee
- Department of Obstetrics and Gynecology, Medical Research Institute, Pusan National University School of Medicine, Busan, Korea
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Hong J, Shao T, Sun X, Li G, Xu J. Interferon-γ up-regulates major-histocompatibility-complex class I-related chain A expression and enhances major-histocompatibility-complex class I-related chain A-mediated cytolysis of human corneal epithelium by natural killer cells in vitro. J Interferon Cytokine Res 2012; 32:115-20. [PMID: 22257014 DOI: 10.1089/jir.2011.0003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Natural killer (NK) cells are important in the ocular surface innate response against viral and bacterial infection. Major-histocompatibility-complex class I-related chain A (MICA) antigens are ligands of natural killer group 2D, an activating or coactivating receptor expressed on NK cells. Recent studies demonstrated that interferon-gamma (IFN-γ) could modulate MICA expression in tumor cells. However, little is known about MICA expression and regulation in human corneal epithelium. Our study assessed whether the proinflammatory cytokine, IFN-γ, affects MICA expression in human corneal epithelium. We identified low levels of surface MICA expression in corneal epithelium using flow cytometry. IFN-γ promoted surface MICA expression in corneal epithelium and increased soluble MICA levels in a dose-dependent manner. IFN-γ also enhanced NK cell-mediated cytotoxicity against the corneal epithelium. Anti-MICA antibodies could further block this process. In summary, we describe a novel IFN-γ function in the regulation of the innate response in ocular surfaces.
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Affiliation(s)
- Jiaxu Hong
- Department of Ophthalmology, Eye, Ear, Nose, and Throat Hospital, School of Shanghai Medicine, Fudan University, Shanghai, China
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Loss of Mel-18 induces tumor angiogenesis through enhancing the activity and expression of HIF-1α mediated by the PTEN/PI3K/Akt pathway. Oncogene 2011; 30:4578-89. [PMID: 21602890 DOI: 10.1038/onc.2011.174] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Mel-18 has been implicated in several processes in tumor progression, in which the Akt pathway is involved as an important key molecular event. However, the function of Mel-18 in human cancers has not been fully established yet. Here, we examined the effect of Mel-18 on tumor angiogenesis in human breast cancer, and found that Mel-18 was a novel regulator of HIF-1α. Mel-18 negatively regulated the HIF-1α expression and its target gene VEGF transcription during both normoxia and hypoxia. We demonstrated that Mel-18 regulated the HIF-1α expression and activity via the PI3K/Akt pathway. Loss of Mel-18 downregulated Phosphatase and tensin homolog deleted on chromosome 10 (PTEN) expression, consequently activating the PI3K/Akt/MDM2 pathway, and leading to an increase of HIF-1α protein level. Mel-18 modulated the HIF-1α transcriptional activity via regulating the cytoplasmic retention of FOXO3a, a downstream effector of Akt, and recruitment of HIF-1α/CBP complex to the VEGF promoter. Furthermore, our data shows that Mel-18 blocked tumor angiogenesis both in vitro and in vivo. Mel-18 overexpression inhibited in vitro tube formation in human umbilical endothelial cells (HUVECs). Xenografts in NOD/SCID mice derived from stably Mel-18 knocked down MCF7 human breast cancer cells showed increased tumor volume, microvessel density, and phospho-Akt and HIF-1α expression levels. In conclusion, our findings provide that Mel-18 is a novel regulator of tumor angiogenesis through regulating HIF-1α and its target VEGF expressions mediated by the PTEN/PI3K/Akt pathway, suggesting a new tumor-suppressive role of Mel-18 in human breast cancer.
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Wang G, Qiu J, Hu J, Tang C, Yin T. Id1: a novel therapeutic target for patients with atherosclerotic plaque rupture. Med Hypotheses 2011; 76:627-8. [PMID: 21288647 DOI: 10.1016/j.mehy.2011.01.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2010] [Accepted: 01/09/2011] [Indexed: 10/18/2022]
Abstract
Plaque neovascularization and inflammation are responsible for plaque destabilization and rupture. However, the precise triggers for inflammation and neovascularization in atherosclerosis are largely unknown. Id1 (inhibitor of DNA-binding) protein is a helix-loop-helix transcription factor and plays an important role in angiogenesis and inflammation. The expression of Id1 can be up-regulated by plaque formation factors such as vascular endothelial growth factor (VEGF), hypoxia, NAD(P)H oxidase, and TNF-alpha. Moreover, Id1 is critical to endothelial progenitor cell (EPC) population formation and angiogenesis. Evidence from diverse sources has suggested that Id1 may affect plaque destabilization through angiogenesis and inflammation. Herein we hypothesize that Id1 is an important protein for the development and progression of atherosclerotic plaque destabilization and hence blocking the expression of Id1 may serve as new targets for antiatherogenic therapy.
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Affiliation(s)
- Guixue Wang
- Key Laboratory of Biorheological Science and Technology, Chongqing University, Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400044, China.
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Lunde IG, Anton SL, Bruusgaard JC, Rana ZA, Ellefsen S, Gundersen K. Hypoxia inducible factor 1 links fast-patterned muscle activity and fast muscle phenotype in rats. J Physiol 2011; 589:1443-54. [PMID: 21262877 DOI: 10.1113/jphysiol.2010.202762] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Exercise influences muscle phenotype by the specific pattern of action potentials delivered to the muscle, triggering intracellular signalling pathways. PO2 can be reduced by an order of magnitude in working muscle. In humans, carriers of a hyperactive polymorphism of the transcription factor hypoxia inducible factor 1α (HIF-1α) have 50% more fast fibres, and this polymorphism is prevalent among strength athletes. We have investigated the putative role of HIF-1α in mediating activity changes in muscle.When rat muscles were stimulated with short high frequency bursts of action potentials known to induce a fast muscle phenotype, HIF-1α increased by about 80%. In contrast, a pattern consisting of long low frequency trains known to make fast muscles slow reduced the HIF-1α level of the fast extensor digitorum longus (EDL) muscle by 44%. Nuclear protein extracts from normal EDL contained 2.3-fold more HIF-1α and 4-fold more HIF-1β than the slow soleus muscle, while von-Hippel-Lindau protein was 4.8-fold higher in slow muscles. mRNA displayed a reciprocal pattern; thus FIH-1 mRNA was almost 2-fold higher in fast muscle, while the HIF-1α level was half, and consequently protein/mRNA ratio for HIF-1α was more than 4-fold higher in the fast muscle, suggesting that HIF-1α is strongly suppressed post-transcriptionally in slow muscles.When HIF-1α was overexpressed for 14 days after somatic gene transfer in adult rats, a slow-to-fast transformation was observed, encompassing an increase in fibre cross sectional area, oxidative enzyme activity and myosin heavy chain. The latter was shown to be regulated at the mRNA level in C2C12 myotubes.
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Affiliation(s)
- Ida G Lunde
- Department of Molecular Biosciences, University of Oslo, PO Box 1041, Blindern, N-0316 Oslo, Norway
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Id1 enhances RING1b E3 ubiquitin ligase activity through the Mel-18/Bmi-1 polycomb group complex. Oncogene 2010; 29:5818-27. [PMID: 20697353 DOI: 10.1038/onc.2010.317] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The helix-loop-helix inhibitor of differentiation and DNA binding (Id1) is well known as an oncogene in various tumors. Although it has been reported that Id1 promotes several oncogenic processes, it is still unclear whether Id1 functions through epigenetic transcriptional regulation. In this study, we examined the effect of Id1 on polycomb group (PcG) proteins, which are crucial epigenetic gene silencers, and found that Id1 regulated the expression of Mel-18 and Bmi-1, both of which belong to polycomb repressive complex 1. We also confirmed that Id1 induced Mel-18 downregulation, which was mediated by the Akt pathway, and consequently upregulated the transcription of its target gene, c-Myc. Using a promoter-reporter, we demonstrated that Id1 regulated Bmi-1 transcription through c-Myc binding to its E-box in the promoter. Finally, we examined the activity of E3 ligase RING1b, whose catalytic activity is increased by binding with the RING finger protein Bmi-1, and found that Id1 overexpression enhanced RING1b E3 ligase activity leading to accumulation of H2A ubiquitination and ubiquitin/proteasome-mediated degradation of geminin. Taken together, our study provided a novel link between Id1 and PcG proteins and suggested that Id1 may contribute to tumor development through PcG-mediated epigenetic regulation.
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Maw MK, Fujimoto J, Tamaya T. Overexpression of inhibitor of DNA-binding (ID)-1 protein related to angiogenesis in tumor advancement of ovarian cancers. BMC Cancer 2009; 9:430. [PMID: 20003244 PMCID: PMC2796680 DOI: 10.1186/1471-2407-9-430] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2009] [Accepted: 12/10/2009] [Indexed: 08/30/2023] Open
Abstract
Background The inhibitor of DNA-binding (ID) has been involved in cell cycle regulation, apoptosis and angiogenesis. This prompted us to study ID functions in tumor advancement of ovarian cancers. Methods Sixty patients underwent surgery for ovarian cancers. In ovarian cancers, the levels of ID-1, ID-2 and ID-3 mRNAs were determined by real-time reverse transcription-polymerase chain reaction. The histoscore with the localization of ID-1 was determined by immunohistochemistry. Patient prognosis was analyzed with a 36-month survival rate. Microvessel counts were determined by immunohistochemistry for CD34 and factor VIII-related antigen. Results ID-1 histoscores and mRNA levels both significantly (p < 0.001) increased in ovarian cancers according to clinical stage, regardless of histopathological type. Furthermore, 30 patients with high ID-1 expression had a lower survival rate (53%) compared to patients with low ID-1 expression (80%). ID-1 histoscores and mRNA levels significantly (p < 0.0001) correlated with microvessel counts in ovarian cancers. Conclusion ID-1 increased in ovarian cancer cells during tumor progression. Moreover, ID-1 expression levels correlated with microvessel counts. Therefore, ID-1 might work on tumor advancement via angiogenesis and is considered to be a candidate for a prognostic indicator in ovarian cancers.
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Affiliation(s)
- Min Khine Maw
- Department of Obstetrics and Gynecology, Graduate School of Medicine, Gifu University School of Medicine, 1-1 Yanagido, Gifu City 501-1194, Japan.
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Del Duca D, Wong G, Trieu P, Rodaros D, Kouremenos A, Tadevosyan A, Vaniotis G, Villeneuve LR, Tchervenkov CI, Nattel S, Allen BG, Hébert TE, Rohlicek CV. Association of neonatal hypoxia with lasting changes in left ventricular gene expression: an animal model. J Thorac Cardiovasc Surg 2009; 138:538-46, 546.e1. [PMID: 19698832 DOI: 10.1016/j.jtcvs.2009.04.042] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2008] [Revised: 04/01/2009] [Accepted: 04/27/2009] [Indexed: 11/25/2022]
Abstract
OBJECTIVE Innovations in pediatric cardiovascular surgery have resulted in significant improvements in survival for children with congenital heart disease. In adults with such disease, however, surgical morbidity and mortality remain significant. We hypothesized that hypoxemia in early life causes lasting changes in gene expression in the developing heart and that such changes may persist into later life, affecting the physiology of the adult myocardium. METHODS Microarray expression analyses were performed with left ventricular tissue from 10- and 90-day-old rats exposed to hypoxia (inspired oxygen fraction 0.12) for the first 10 days after birth then subsequently reared in ambient air and with tissue from age-matched rats reared entirely in ambient air. Changes in expression of selected genes were confirmed with real-time reverse transcriptase polymerase chain reaction. Left ventricular cardiomyocytes were isolated from adult animals in both groups, and cellular morphology and viability were compared. RESULTS Microarray analyses revealed significant changes in 1945 and 422 genes in neonates and adults, respectively. Changes in genes associated with adaptive vascular remodeling and energy homeostasis, as well as regulation of apoptosis, were confirmed by real-time reverse transcriptase polymerase chain reaction. The viability of cardiomyocytes isolated from hypoxic animals was significantly lower than in those from control animals (36.7% +/- 13.3% vs 85.0% +/- 2.9%, P = .024). CONCLUSIONS Neonatal hypoxia is associated with significant changes in left ventricular gene expression in both neonatal and adult rats. This may have physiologic implications for the adult myocardium.
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Affiliation(s)
- Danny Del Duca
- Division of Cardiovascular Surgery, Montréal Children's Hospital-McGill University Health Centre, Montréal, Québec, Canada
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Cao Y, Liu X, Zhang W, Deng X, Zhang H, Liu Y, Chen L, Thompson EA, Townsend CM, Ko TC. TGF-beta repression of Id2 induces apoptosis in gut epithelial cells. Oncogene 2009; 28:1089-98. [PMID: 19137015 DOI: 10.1038/onc.2008.456] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Transforming growth factor-beta (TGF-beta) regulates epithelial tissue homeostasis by activating processes that control cell cycle arrest, differentiation and apoptosis. Disruption of the TGF-beta signaling pathway often occurs in colorectal cancers. Earlier, we have shown that TGF-beta induces apoptosis through the transcription factor Smad3. Affymetrix oligonucleotide microarrays were used to identify TGF-beta/Smad3 target genes that regulate apoptosis in rat intestinal epithelial cells (RIE-1). We found that TGF-beta repressed the expression of the inhibitor of differentiation (Id) gene family. Knockdown of Id1 and Id2 gene expression induced apoptosis in RIE-1 cells, whereas overexpression of Id2 attenuated TGF-beta-induced apoptosis. TranSignal Protein/DNA arrays were used to identify the hypoxia-inducing factor-1 (HIF-1) as a downstream target of TGF-beta. HIF-1 is a basic helix-loop-helix protein, and overexpression of Id2 blocked HIF-1 activation by TGF-beta. Furthermore, knockdown of HIF-1 blocked TGF-beta-induced apoptosis. Thus, we have identified HIF-1 as a novel mediator downstream of Id2 in the pathway of TGF-beta-induced apoptosis.
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Affiliation(s)
- Y Cao
- Department of Surgery, University of Texas Health Science Center, Houston, TX 77030, USA.
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Zuo S, Ji Y, Wang J, Guo J. Expression and clinical implication of HIF-1alpha and VEGF-C in non-small cell lung cancer. ACTA ACUST UNITED AC 2008; 28:674-6. [PMID: 19107364 DOI: 10.1007/s11596-008-0613-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2008] [Indexed: 11/26/2022]
Abstract
To study the expression and implication of HIF-1alpha and VEGF-C in non-small cell lung cancer (NSCLC) and its relationship with clinical pathological features of NSCLC, immunohistochemical SP was used to detect the expression of HIF-1alpha and VEGF-C proteins in 48 NSCLC tissues and the same para-cancerous tissues. The positive rates of HIF-1alpha and VEGF-C were 70.8% (34/48) and 68.8% (33/48) respectively. The expression of HIF-1alpha protein was detected in a significantly greater proportion in NSCLC carcinoma tissues than that in para-cancerous tissues (12.5% and 16.7%, P<0.05). The positive rates of HIF-1alpha and VEGF-C were correlated with lymph node metastasis and TNM stage. No relationship was found between the two factors and age, sex, pathological subtypes and histological grades. The positive rates between HIF-1alpha and VEGF-C were correlated (P<0.05). HIF-1alpha and VEGF-C were over-expressed in NSCLC. They may be involved in the carcinogenesis of NSCLC, and play an important role in invasion and metastasis of NSCLC. HIF-1alpha and VEGF-C work synergically in the process of NSCLC.
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Affiliation(s)
- Shunqing Zuo
- Department of Thoracic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
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Id-1 activates Akt-mediated Wnt signaling and p27(Kip1) phosphorylation through PTEN inhibition. Oncogene 2008; 28:824-31. [PMID: 19079342 DOI: 10.1038/onc.2008.451] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Inhibitor of differentiation-1 (Id-1) has been accepted as a putative oncogene to promote oncogenic processes through inactivation of tumor suppressors and activation of growth promoting pathways. Here, we show that Id-1 activates the Akt pathway by inhibition of phosphatase and tensin homologue deleted on chromosome 10 (PTEN) transcription through downregulation of p53. Id-1 negatively regulated both p53 and PTEN at the transcriptional level. In promoter assay with serial deletion and chromatin immunoprecipitation assay, the binding of p53 to the PTEN promoter was reduced by Id-1, suggesting that Id-1 regulates PTEN transcription through its p53 modulation. This led to Akt phosphorylation at Ser473 and the activation of the Akt-mediated canonical Wnt signaling pathway. The glycogen synthase kinase-3beta phosphorylation at Ser9, stabilization and nuclear localization of beta-catenin, T-cell factor (TCF)/lymphoid enhancer factor transactivation activity and cyclin D1 expression were enhanced by Id-1. On the other hand, Akt-mediated p27(Kip1) phosphorylation at Thr157 and its cytosolic localization were also increased in Id-1 overexpressing MCF7 cells. In conclusion, our results disclose Id-1 as a novel PTEN inhibitor that could activate the Akt pathway and its downstream effectors, the Wnt/TCF pathway and p27(Kip1) phosphorylation and suggest that the oncogenic function of Id-1 may be partly attributed to its PTEN inhibition in human breast carcinogenesis.
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Meteoglu I, Meydan N, Erkus M. Id-1: regulator of EGFR and VEGF and potential target for colorectal cancer therapy. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2008; 27:69. [PMID: 19014499 PMCID: PMC2588562 DOI: 10.1186/1756-9966-27-69] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/20/2008] [Accepted: 11/12/2008] [Indexed: 05/03/2023]
Abstract
Background The helix-loop-helix transcription factor Id-1 (an inhibitor of differentiation and DNA binding) plays a role in development and progression of many tumours. Id-1 is known to exert its effects on the epidermal growth factor receptor (EGFR) and the vascular endothelial growth factor (VEGF). The aim of this study was to reveal whether there was a relationship between Id-1 and EGFR and VEGF in colorectal carcinoma. Methods Tumour and non-tumour tissue specimens from 46 cases of colorectal carcinoma were exposed to immunohistochemical staining for Id-1, EGFR and VEGF. The relationship between the degree of staining and tumour grade, tumour stage and all tumour markers was investigated. Results Tumour cells showed positive staining for Id-1 in 43 cases (93.5%), for EGFR in 41 cases (89%) and for VEGF in 42 cases (91%). There was a significant relation between the tumour grade and the degree of staining for Id-1, EGFR and VEGF. The relation between the tumour stage and the degree of staining for Id-1, EGFR and VEGF was also significant. There was a significant relation between Id-1 expression and EGFR and VEGF expressions. Non-tumoural tissue specimens were not stained with Id-1 and EGFR antibodies in any of the cases, but stained with VEGF antibody in 3 cases. Conclusion This study revealed that Id-1, EGFR and VEGF took part in development and progression of colorectal carcinomas and that Id-1 was associated with regulations of EGFR and VEGF. The results of this study support the idea that not only EGFR and VEGF but also Id-1 could be new targets in cancer treatment.
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Affiliation(s)
- Ibrahim Meteoglu
- Adnan Menderes University, Medical Faculty, Department of Pathology, 09100-Aydin/Turkey.
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Tsunedomi R, Iizuka N, Tamesa T, Sakamoto K, Hamaguchi T, Somura H, Yamada M, Oka M. Decreased ID2 promotes metastatic potentials of hepatocellular carcinoma by altering secretion of vascular endothelial growth factor. Clin Cancer Res 2008; 14:1025-31. [PMID: 18281534 DOI: 10.1158/1078-0432.ccr-07-1116] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE We aimed to explore the molecular and biological functions of Inhibitor of DNA binding/differentiation 2 (ID2), which was found to be responsible for portal vein invasion of hepatocellular carcinoma (HCC). EXPERIMENTAL DESIGN We measured ID2 mRNA levels in 92 HCC patients by real-time reverse transcription-PCR and examined the relation to clinicopathologic features. To clarify the precise roles of ID2, we did in vitro analysis with expression vectors and small interfering RNAs. Effects of ID2 on cell invasive potential and expression of vascular endothelial growth factor (VEGF) and hypoxia-inducible factor-1alpha were analyzed by Matrigel-coated invasion chamber, ELISA, and Western blot analysis, respectively. RESULTS ID2 mRNA level correlated inversely with portal vein invasion (P < 0.001), tumor-node-metastasis stage (P < 0.001), tumor size (P < 0.001), and early intrahepatic recurrence (P < 0.05). When limited to a cohort of hepatitis C virus-related HCCs, patients with low levels of ID2 had significantly shorter disease-free survival time than those with high levels of ID2. Invasive potential of cells transfected with ID2 expression vector was lower than that of empty vector-transfected cells. Cells overexpressing ID2 also showed decreased VEGF secretion and hypoxia-inducible factor-1alpha protein levels. The results of ID2-knockdown experiments were opposite to those of ID2 overexpression experiments. CONCLUSIONS On the basis of our clinical and in vitro data, we suggest that ID2 plays a significant role in the metastatic process during progression of HCC. This action might be explained, at least in part, by altered cell mobility due to decreased secretion of VEGF.
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Affiliation(s)
- Ryouichi Tsunedomi
- Department of Digestive Surgery and Surgical Oncology, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
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Fong GH. Mechanisms of adaptive angiogenesis to tissue hypoxia. Angiogenesis 2008; 11:121-40. [PMID: 18327686 DOI: 10.1007/s10456-008-9107-3] [Citation(s) in RCA: 139] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2007] [Accepted: 02/25/2008] [Indexed: 12/18/2022]
Abstract
Angiogenesis is mostly an adaptive response to tissue hypoxia, which occurs under a wide variety of situations ranging from embryonic development to tumor growth. In general, angiogenesis is dependent on the accumulation of hypoxia inducible factors (HIFs), which are heterodimeric transcription factors of alpha and beta subunits. Under normoxia, HIF heterodimers are not abundantly present due to oxygen dependent hydroxylation, polyubiquitination, and proteasomal degradation of alpha subunits. Under hypoxia, however, alpha subunits are stabilized and form heterodimers with HIF-1beta which is not subject to oxygen dependent regulation. The accumulation of HIFs under hypoxia allows them to activate the expression of many angiogenic genes and therefore initiates the angiogenic process. In recent years, however, it has become clear that various other mechanisms also participate in fine tuning angiogenesis. In this review, I discuss the relationship between hypoxia and angiogenesis under five topics: (1) regulation of HIF-alpha abundance and activity by oxygen tension and other conditions including oxygen independent mechanisms; (2) hypoxia-regulated expression of angiogenic molecules by HIFs and other transcription factors; (3) responses of vascular cells to hypoxia; (4) angiogenic phenotypes due to altered HIF signaling in mice; and (5) role of the HIF pathway in pathological angiogenesis. Studies discussed under these topics clearly indicate that while mechanisms of oxygen-regulated HIF-alpha stability provide exciting opportunities for the development of angiogenesis or anti-angiogenesis therapies, it is also highly important to consider various other mechanisms for the optimization of these procedures.
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Affiliation(s)
- Guo-Hua Fong
- Center for Vascular Biology, Department of Cell Biology, University of Connecticut Health Center, 263 Farmington Avenue, Farmington, CT 06030-3501, USA.
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Luan Y, Yu XP, Yang N, Frenkel S, Chen L, Liu CJ. p204 protein overcomes the inhibition of core binding factor alpha-1-mediated osteogenic differentiation by Id helix-loop-helix proteins. Mol Biol Cell 2008; 19:2113-26. [PMID: 18287524 DOI: 10.1091/mbc.e07-10-1057] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Id proteins play important roles in osteogenic differentiation; however, the molecular mechanism remains unknown. In this study, we established that inhibitor of differentiation (Id) proteins, including Id1, Id2, and Id3, associate with core binding factor alpha-1 (Cbfa1) to cause diminished transcription of the alkaline phosphatase (ALP) and osteocalcin (OCL) gene, leading to less ALP activity and osteocalcin (OCL) production. Id acts by inhibiting the sequence-specific binding of Cbfa1 to DNA and by decreasing the expression of Cbfa1 in cells undergoing osteogenic differentiation. p204, an interferon-inducible protein that interacts with both Cbfa1 and Id2, overcame the Id2-mediated inhibition of Cbfa1-induced ALP activity and OCL production. We show that 1) p204 disturbed the binding of Id2 to Cbfa1 and enabled Cbfa1 to bind to the promoters of its target genes and 2) that p204 promoted the translocation from nucleus to the cytoplasm and accelerated the degradation of Id2 by ubiquitin-proteasome pathway during osteogenesis. Nucleus export signal (NES) of p204 is required for the p204-enhanced cytoplasmic translocation and degradation of Id2, because a p204 mutant lacking NES lost these activities. Together, Cbfa1, p204, and Id proteins form a regulatory circuit and act in concert to regulate osteoblast differentiation.
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Affiliation(s)
- Yi Luan
- Department of Orthopaedic Surgery, New York University School of Medicine, New York, NY 10003, USA
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Kim H, Chung H, Kim HJ, Lee JY, Oh MY, Kim Y, Kong G. Id-1 regulates Bcl-2 and Bax expression through p53 and NF-κB in MCF-7 breast cancer cells. Breast Cancer Res Treat 2007; 112:287-96. [DOI: 10.1007/s10549-007-9871-6] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2007] [Accepted: 12/14/2007] [Indexed: 10/22/2022]
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