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Assis-Mendonça GR, Campos LG, Delamain MT, de Brito ABC, Fanelli MF, Soares FA, de Souza CA, Vassallo J, Lima CSP. Association of single nucleotide variants in VEGFA and KDR with the risk and angiogenic features of diffuse large B-cell lymphoma. Leuk Lymphoma 2023; 64:2165-2177. [PMID: 37647140 DOI: 10.1080/10428194.2023.2248330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 07/14/2023] [Accepted: 08/10/2023] [Indexed: 09/01/2023]
Abstract
Diffuse large B-cell lymphoma (DLBCL) is the most common lymphoma subtype and dependent on angiogenesis (AG), whose main effectors are VEGFA and VEGFR2. Functional single nucleotide variants (SNVs) are described in VEGFA and KDR genes. However, it still unknown whether VEGFA - 2578C/A, -2489C/T, -1154G/A, -634G/C, -460C/T and KDR-604T/C, -271G/A, +1192G/A and +1719A/T SNVs act on DLBCL risk and angiogenic features. Genomic DNA from 168 DLBCL patients and 205 controls was used for SNV genotyping. Angiogenesis was immunohistochemically assessed in tumor biopsies, with reactions for VEGFA, VEGFR2, and CD34. VEGFA -1154GG genotype were associated with 1.6-fold higher DLBCL risk. KDR + 1192GG plus KDR + 1719 TT and KDR + 1192GG plus VEGFA - 2578CC combined genotypes are associated with 2.19- and 2.04-fold higher risks of DLBCL, respectively. VEGFA - 634GG or GC genotypes are associated with increased microvessel density and VEGFA levels. No relationship was observed between SNVs and cell-of-origin classification of DLBCL, but higher VEGFA and VEGFR2 were seen in non-germinal center tumors.
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Affiliation(s)
- Guilherme Rossi Assis-Mendonça
- School of Medical Sciences, Laboratory of Cancer Genetics, University of Campinas, Campinas, Brazil
- Young Physician Leaders Program, National Academy of Medicine, Rio de Janeiro, Brazil
| | - Letícia Goulart Campos
- School of Medical Sciences, Laboratory of Cancer Genetics, University of Campinas, Campinas, Brazil
| | | | | | | | - Fernando Augusto Soares
- Instituto D'Or de Pesquisa e Ensino (IDOR), Anatomic Pathology D'Or Hospitals Network, São Paulo, Brazil
| | - Cármino Antônio de Souza
- Hematology and Hemotherapy Center, University of Campinas, Campinas, Brazil
- Department of Internal Medicine, School of Medical Sciences, University of Campinas, Campinas, Brazil
| | - José Vassallo
- Instituto D'Or de Pesquisa e Ensino (IDOR), Anatomic Pathology D'Or Hospitals Network, São Paulo, Brazil
- Department of Pathology, School of Medical Sciences, University of Campinas, Campinas, Brazil
| | - Carmen Silvia Passos Lima
- School of Medical Sciences, Laboratory of Cancer Genetics, University of Campinas, Campinas, Brazil
- Department of Anesthesiology, Oncology and Radiology, School of Medical Sciences, University of Campinas, Campinas, Brazil
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Freitag-Wolf S, Schupp JC, Frye BC, Fischer A, Anwar R, Kieszko R, Mihailović-Vučinić V, Milanowski J, Jovanovic D, Zissel G, Bargagli E, Rottoli P, Bumbacea D, Jonkers R, Ho LP, Gaede KI, Dubaniewicz A, Marshall BG, Günther A, Petrek M, Keane MP, Haraldsdottir SO, Bonella F, Grah C, Peroš-Golubičić T, Kadija Z, Pabst S, Grohé C, Strausz J, Safrankova M, Millar A, Homolka J, Wuyts WA, Spencer LG, Pfeifer M, Valeyre D, Poletti V, Wirtz H, Prasse A, Schreiber S, Dempfle A, Müller-Quernheim J. Genetic and geographic influence on phenotypic variation in European sarcoidosis patients. Front Med (Lausanne) 2023; 10:1218106. [PMID: 37621457 PMCID: PMC10446882 DOI: 10.3389/fmed.2023.1218106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 07/25/2023] [Indexed: 08/26/2023] Open
Abstract
Introduction Sarcoidosis is a highly variable disease in terms of organ involvement, type of onset and course. Associations of genetic polymorphisms with sarcoidosis phenotypes have been observed and suggest genetic signatures. Methods After obtaining a positive vote of the competent ethics committee we genotyped 1909 patients of the deeply phenotyped Genetic-Phenotype Relationship in Sarcoidosis (GenPhenReSa) cohort of 31 European centers in 12 countries with 116 potentially disease-relevant single-nucleotide polymorphisms (SNPs). Using a meta-analysis, we investigated the association of relevant phenotypes (acute vs. sub-acute onset, phenotypes of organ involvement, specific organ involvements, and specific symptoms) with genetic markers. Subgroups were built on the basis of geographical, clinical and hospital provision considerations. Results In the meta-analysis of the full cohort, there was no significant genetic association with any considered phenotype after correcting for multiple testing. In the largest sub-cohort (Serbia), we confirmed the known association of acute onset with TNF and reported a new association of acute onset an HLA polymorphism. Multi-locus models with sets of three SNPs in different genes showed strong associations with the acute onset phenotype in Serbia and Lublin (Poland) demonstrating potential region-specific genetic links with clinical features, including recently described phenotypes of organ involvement. Discussion The observed associations between genetic variants and sarcoidosis phenotypes in subgroups suggest that gene-environment-interactions may influence the clinical phenotype. In addition, we show that two different sets of genetic variants are permissive for the same phenotype of acute disease only in two geographic subcohorts pointing to interactions of genetic signatures with different local environmental factors. Our results represent an important step towards understanding the genetic architecture of sarcoidosis.
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Affiliation(s)
- Sandra Freitag-Wolf
- Institute of Medical Informatics and Statistics, Kiel University, Kiel, Germany
| | - Jonas C. Schupp
- Department of Pneumology, Faculty of Medicine, University Medical Centre, Freiburg, Germany
- Department of Respiratory Medicine, Hannover Medical School, German Center for Lung Research (DZL), Hannover, Germany
- Biomedical Research in End-Stage and Obstructive Lung Disease (BREATH), Hannover Medical School (MHH), German Center for Lung Research (DZL), Hannover, Germany
| | - Björn C. Frye
- Department of Pneumology, Faculty of Medicine, University Medical Centre, Freiburg, Germany
| | - Annegret Fischer
- Institute of Clinical Molecular Biology, Kiel University, Kiel, Germany
| | - Raihanatul Anwar
- Institute of Medical Informatics and Statistics, Kiel University, Kiel, Germany
| | - Robert Kieszko
- Department of Pneumonology, Oncology and Allergology, Medical University of Lublin, Lublin, Poland
| | | | - Janusz Milanowski
- Department of Pneumonology, Oncology and Allergology, Medical University of Lublin, Lublin, Poland
| | | | - Gernot Zissel
- Department of Pneumology, Faculty of Medicine, University Medical Centre, Freiburg, Germany
| | - Elena Bargagli
- Respiratory Diseases and Lung Transplant Unit, University Hospital, Siena, Italy
| | - Paola Rottoli
- Respiratory Diseases and Lung Transplant Unit, University Hospital, Siena, Italy
| | - Dragos Bumbacea
- Department of Cardio-Thoracic Medicine, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
| | - René Jonkers
- Pulmonology Department, Academic Medical Center Amsterdam, Amsterdam, Netherlands
| | - Ling-Pei Ho
- Oxford Sarcoidosis Service, Oxford University Hospitals NHS Foundation Trust, Churchill Hospital, Oxford, United Kingdom
| | | | - Anna Dubaniewicz
- Department of Pulmonology, Medical University of Gdansk, Gdansk, Poland
| | - Ben G. Marshall
- Department of Respiratory Medicine, University Hospital, Southampton, United Kingdom
| | - Andreas Günther
- Department of Pneumology and Intensive Care, University Hospital, Giessen, Germany
| | - Martin Petrek
- Faculty of Medicine and Dentistry, Palacký University and University Hospital Olomouc, Olomouc, Czechia
| | - Michael P. Keane
- Division of Pulmonary and Critical Care Medicine, University College Dublin and St Vincent’s University Hospital, Dublin, Ireland
| | | | - Francesco Bonella
- Ruhrlandklinik, Westdeutsches Lungenzentrum am Universitätsklinikum Essen, Universitätsklinik Essen, Essen, Germany
| | | | | | - Zamir Kadija
- Foundation IRCCS Policlinico San Matteo - Pulmonology Unit, Pavia, Italy
| | - Stefan Pabst
- Department of Pneumology, University Hospital, Bonn, Germany
| | | | | | - Martina Safrankova
- Thomayer Hospital and 1st Faculty of Medicine, Charles University, Praha, Czechia
| | - Ann Millar
- Pulmonary Department, University Hospital, Bristol, United Kingdom
| | - Jiří Homolka
- Prague General Hospital, Charles University, Prague, Czechia
| | - Wim A. Wuyts
- Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), University Hospital, Leuven, Belgium
| | - Lisa G. Spencer
- Liverpool Interstitial Lung Disease Service, Aintree Chest Centre, Liverpool University Hospitals NHS FT, Liverpool, United Kingdom
| | - Michael Pfeifer
- Department of Pneumology, University Hospital Regensburg, Regensburg, Germany
| | - Dominique Valeyre
- Groupe Hospitalier Avicenne-Jean Verdier-René Muret, Service de Pneumologie, Bobigny, France
| | - Venerino Poletti
- Pulmonary Unit, Department of Thoracic Diseases, Azienda USL Romagna, GB Morgagni-L-Pierantoni Hospital, Forlì, Italy
| | - Hubertus Wirtz
- Department of Pneumology, University Hospital Leipzig, Leipzig, Germany
| | - Antje Prasse
- Department of Pneumology, Faculty of Medicine, University Medical Centre, Freiburg, Germany
- Department of Respiratory Medicine, Hannover Medical School, German Center for Lung Research (DZL), Hannover, Germany
| | - Stefan Schreiber
- Institute of Clinical Molecular Biology, Kiel University, Kiel, Germany
- Department of Internal Medicine I, University Hospital Schleswig-Holstein, Kiel, Germany
| | - Astrid Dempfle
- Institute of Medical Informatics and Statistics, Kiel University, Kiel, Germany
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Wang C, Shi J, Cai J, Zhang Y, Zheng X, Zhang N. DriverRWH: discovering cancer driver genes by random walk on a gene mutation hypergraph. BMC Bioinformatics 2022; 23:277. [PMID: 35831792 PMCID: PMC9281118 DOI: 10.1186/s12859-022-04788-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 06/08/2022] [Indexed: 12/24/2022] Open
Abstract
Background Recent advances in next-generation sequencing technologies have helped investigators generate massive amounts of cancer genomic data. A critical challenge in cancer genomics is identification of a few cancer driver genes whose mutations cause tumor growth. However, the majority of existing computational approaches underuse the co-occurrence mutation information of the individuals, which are deemed to be important in tumorigenesis and tumor progression, resulting in high rate of false positive. Results To make full use of co-mutation information, we present a random walk algorithm referred to as DriverRWH on a weighted gene mutation hypergraph model, using somatic mutation data and molecular interaction network data to prioritize candidate driver genes. Applied to tumor samples of different cancer types from The Cancer Genome Atlas, DriverRWH shows significantly better performance than state-of-art prioritization methods in terms of the area under the curve scores and the cumulative number of known driver genes recovered in top-ranked candidate genes. Besides, DriverRWH discovers several potential drivers, which are enriched in cancer-related pathways. DriverRWH recovers approximately 50% known driver genes in the top 30 ranked candidate genes for more than half of the cancer types. In addition, DriverRWH is also highly robust to perturbations in the mutation data and gene functional network data. Conclusion DriverRWH is effective among various cancer types in prioritizes cancer driver genes and provides considerable improvement over other tools with a better balance of precision and sensitivity. It can be a useful tool for detecting potential driver genes and facilitate targeted cancer therapies. Supplementary Information The online version contains supplementary material available at 10.1186/s12859-022-04788-7.
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Affiliation(s)
- Chenye Wang
- School of Mathematics and Statistics, Shandong University, Weihai, 264209, China
| | - Junhan Shi
- School of Mathematics and Statistics, Shandong University, Weihai, 264209, China
| | - Jiansheng Cai
- Department of Mathematics, Weifang University, Weifang, 261061, Shandong, China
| | - Yusen Zhang
- School of Mathematics and Statistics, Shandong University, Weihai, 264209, China
| | - Xiaoqi Zheng
- Department of Mathematics, Shanghai Normal University, Shanghai, 200234, China
| | - Naiqian Zhang
- School of Mathematics and Statistics, Shandong University, Weihai, 264209, China.
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KDR polymorphism (1192G/A, 1719A/T) and modulation of ARV drug-induced hepatotoxicity. Microb Pathog 2021; 161:105243. [PMID: 34656700 DOI: 10.1016/j.micpath.2021.105243] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 10/11/2021] [Accepted: 10/11/2021] [Indexed: 01/16/2023]
Abstract
Kinase insert Domain containing Receptor (KDR)/Vascular Endothelial Growth Factor Receptor (VEGFR-2) participate in endothelial dysfunction, which can lead to chronic liver disease. KDR reflects naturally against the toxicants from the damaged liver cells. Association of KDR polymorphism has been reported with many diseases including liver disease, but its role has not been described in ARV induced hepatotoxicity. Hence, we examined the exonic regions KDR (1192G/A, 1719A/T) polymorphism from 165 HIV-infected individuals (34/165 had ARV induced hepatotoxicity, 131/165 were with no hepatotoxicity) and 160 normal uninfected individuals by PCR-RFLP. In univariate analysis, KDR 1719 TT genotype presented at greater frequency from all HIV positive individuals in contrast with normal uninfected individuals (7.87% vs. 4.4%, OR = 1.72, P = 0.38). Individuals with KDR 1719 TT genotype had a risk for increasing hepatotoxicity and its severity (OR = 1.91, P = 0.38). Individuals with haplotype AT had risk for increasing hepatotoxicity and its severity (OR = 1.60, P = 0.50; OR = 2.35, P = 0.27). Whereas haplotype AA was associated with reduced risk of developing hepatotoxicity (OR = 0.40, P = 0.04). Individuals with KDR 1719 TT genotype were at greater risk of advancement of HIV disease (OR = 2.31, P = 0.23). Individuals with KDR 1719 TT genotype had more vulnerability for developing hepatotoxicity among alcohol users (OR = 2.57, P = 0.23). Individuals with KDR 1719 TT genotype were at higher risk of developing hepatotoxicity and its severity among nevirapine and alcohol consumers (OR = 2.47, P = 0.24; OR = 5.42, P = 0.42). In multivariate analysis, hepatotoxicity patients taking ART inclusive of nevirapine was associated with the severity of hepatotoxicity (OR = 4.82, P = 0.002). In conclusion, KDR 1719 TT genotype and haplotype AT may have a risk for development of hepatotoxicity and its severity. Haplotype AA may have influence to reduce the risk of developing hepatotoxicity.
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Brito ABC, Delamain MT, Fanelli MF, Soares FA, de Souza CA, Vassallo J, Lima CSP. Angiogenesis' related genetic variants alter clinical features and prognosis of diffuse large B-cell lymphoma patients. Tumour Biol 2021; 43:129-140. [PMID: 34219681 DOI: 10.3233/tub-211510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVES Single nucleotide variants (SNVs) in vascular endothelial growth factor A (VEGFA) and VEGFA receptor (KDR) genes confer different inherited abilities in angiogenesis (AG) pathway. We aimed in the present study to evaluate influence of six VEGFA and four KDR SNVs in clinical features and survival of diffuse large B-cell lymphoma (DLBCL) patients. METHODS One hundred and sixty-eight DLBCL patients diagnosed between June 2009-September 2014 were enrolled in the study. Patients were homogeneously treated with R-CHOP. Genotypes were identified in genomic DNA by real-time polymerase chain reaction. RESULTS Patients with VEGFA -634CC and +936CT or TT genotypes were at increased risk of showing grade III / IV toxicities and not achieving complete remission with treatment, and shorter event-free and overall survival were seen in patients with VEGFA -1154GA or AA genotype and VEGFA ATAGCC haplotype. CONCLUSION Our data suggest that inherited abnormalities in AG's gene modulate clinical features and prognosis of DLBCL patients homogeneously treated with R-CHOP.
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Affiliation(s)
| | | | | | | | - Cármino Antônio de Souza
- Department of Internal Medicine, Faculty of Medical Sciences, University of Campinas, Campinas, São Paulo, Brazil.,Haematology and Haemotherapy Centre, University of Campinas, Campinas, São Paulo, Brazil
| | - José Vassallo
- A. C. Camargo Cancer Centre, São Paulo, São Paulo, Brazil.,Laboratory of Molecular and Investigative Pathology, Faculty of Medical Sciences, University of Campinas, Campinas, São Paulo, Brazil
| | - Carmen Silvia Passos Lima
- Department of Internal Medicine, Faculty of Medical Sciences, University of Campinas, Campinas, São Paulo, Brazil
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Mafu TS, September AV, Shamley D. KDR inferred haplotype is associated with upper limb dysfunction in breast cancer survivors of mixed ancestry. Cancer Manag Res 2019; 11:3829-3845. [PMID: 31118800 PMCID: PMC6502440 DOI: 10.2147/cmar.s191969] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Accepted: 03/29/2019] [Indexed: 01/27/2023] Open
Abstract
Introduction: Shoulder pain and disability are well-documented sequelae of breast cancer treatment. Angiogenesis signaling may have a role in the development of shoulder pain or shoulder disability in breast cancer survivors. The aim of this study was to determine if polymorphisms in angiogenesis-related genes are associated with shoulder pain or disability following breast cancer treatment. Participants and methods: A cross-sectional study was conducted on 220 South African breast cancer survivors. The study aimed to evaluate associations between shoulder pain/disability and seven single nucleotide polymorphisms (SNPs) within five angiogenesis-associated genes: KDR (rs2305948 C>T; rs7667298 C>T), NOS3 (rs1549758 C>T), MMP2 (rs708269 A>T), THBS2 (rs9766678 A>G) and TIMP3 (rs5754312 T>A; rs715572 G>A). In addition, associations between shoulder pain/disability and inferred haplotypes for KDR and TIMP3 SNPs were evaluated. Participants were grouped into no–low and moderate–high shoulder pain/disability based on total pain/disability scores: ≤30 and >30, respectively using the shoulder pain and disability index (SPADI). Results: No independent associations with shoulder pain/disability categories were found for all SNPs. However, 1 inferred haplotype (KDR “TT”) differed significantly (P=0.014) between the shoulder disability categories. After adjusting for participants’ age, the differences in KDR inferred haplotype frequencies between shoulder disability categories became non-significant (P=0.052). Conclusion: Our findings provide a preliminary suggestion of a possible association between polymorphisms in genes involved in angiogenesis and the presence of moderate–high shoulder disability among South African breast cancer survivors. A larger prospective cohort study is currently being conducted by our group.
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Affiliation(s)
- Trevor S Mafu
- Division of Exercise Science and Sports Medicine, Department of Human Biology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - Alison V September
- Division of Exercise Science and Sports Medicine, Department of Human Biology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - Delva Shamley
- Clinical Research Centre, Faculty of Health Sciences, University of Cape Town, Rondebosch, South Africa
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Ziegler J, Zalles M, Smith N, Saunders D, Lerner M, Fung KM, Patel M, Wren JD, Lupu F, Battiste J, Towner RA. Targeting ELTD1, an angiogenesis marker for glioblastoma (GBM), also affects VEGFR2: molecular-targeted MRI assessment. AMERICAN JOURNAL OF NUCLEAR MEDICINE AND MOLECULAR IMAGING 2019; 9:93-109. [PMID: 30911439 PMCID: PMC6420708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 01/21/2019] [Indexed: 06/09/2023]
Abstract
Glioblastomas (GBM) are deadly brain tumors that currently do not have long-term patient treatments available. GBM overexpress the angiogenesis factor VEGF and its receptor VEGFR2. ETLD1 (epidermal growth factor, latrophilin and seven transmembrane domain-containing protein 1), a G-protein coupled receptor (GPCR) protein, we discovered as a biomarker for high-grade gliomas, is also a novel regulator of angiogenesis. Since it was established that VEGF regulates ELTD1, we wanted to establish if VEGFR2 is also associated with ELTD1, by targeted antibody inhibition. G55 glioma-bearing mice were treated with either anti-ELTD1 or anti-VEGFR2 antibodies. With the use of MRI molecular imaging probes, we were able to detect in vivo levels of either ELTD1 (anti-ELTD1 probe) or VEGFR2 (anti-VEGFR2 probe). Protein expressions were obtained for ELTD1, VEGF or VEGFR2 via immunohistochemistry (IHC). VEGFR2 levels were significantly decreased (P < 0.05) with anti-ELTD1 antibody treatment, and ELTD1 levels were significantly decreased (P < 0.05) with anti-VEGFR2 antibody treatment, both compared to untreated tumors. IHC from mouse tumor tissues established that VEGFR2 and ELTD1 were co-localized. The mouse anti-ELTD1 antibody treatment study indicated that anti-VEGFR2 antibody treatment does not significantly increase survival, decrease tumor volumes, or alter tumor perfusion (measured as relative cerebral blood flow or rCBF). Conversely, anti-ELTD1 antibody treatment was able to significantly increase animal survival (P < 0.01), decrease tumor volumes (P < 0.05), and reduce change in rCBF (P < 0.001), when compared to untreated or IgG-treated tumor bearing mice. Anti-ELTD1 antibody therapy could be beneficial in targeting ELTD1, as well as simultaneously affecting VEGFR2, as a possible GBM treatment.
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Affiliation(s)
- Jadith Ziegler
- Advanced Magnetic Resonance Center, Oklahoma Medical Research FoundationOklahoma, OK, USA
- Department of Pathology, University of Oklahoma Health Sciences CenterOklahoma, OK, USA
| | - Michelle Zalles
- Advanced Magnetic Resonance Center, Oklahoma Medical Research FoundationOklahoma, OK, USA
- Oklahoma Center for Neuroscience, University of Oklahoma Health Sciences CenterOklahoma, OK, USA
| | - Nataliya Smith
- Advanced Magnetic Resonance Center, Oklahoma Medical Research FoundationOklahoma, OK, USA
| | - Debra Saunders
- Advanced Magnetic Resonance Center, Oklahoma Medical Research FoundationOklahoma, OK, USA
| | - Megan Lerner
- Surgery Research Laboratory, University of Oklahoma Health Sciences CenterOklahoma, OK, USA
| | - Kar-Ming Fung
- Department of Pathology, University of Oklahoma Health Sciences CenterOklahoma, OK, USA
- Stephenson Cancer Center, University of Oklahoma Health Sciences CenterOklahoma, OK, USA
| | - Maulin Patel
- Cardiovascular Biology, Oklahoma Medical Research FoundationOklahoma, OK, USA
| | - Jonathan D Wren
- Arthritis and Clinical Immunology, Oklahoma Medical Research FoundationOklahoma, OK, USA
| | - Florea Lupu
- Cardiovascular Biology, Oklahoma Medical Research FoundationOklahoma, OK, USA
| | - James Battiste
- Stephenson Cancer Center, University of Oklahoma Health Sciences CenterOklahoma, OK, USA
- Department of Neurology, University of Oklahoma Health Sciences CenterOklahoma, OK, USA
| | - Rheal A Towner
- Advanced Magnetic Resonance Center, Oklahoma Medical Research FoundationOklahoma, OK, USA
- Department of Pathology, University of Oklahoma Health Sciences CenterOklahoma, OK, USA
- Oklahoma Center for Neuroscience, University of Oklahoma Health Sciences CenterOklahoma, OK, USA
- Stephenson Cancer Center, University of Oklahoma Health Sciences CenterOklahoma, OK, USA
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Oszajca K, Szemraj M, Szemraj J, Jurowski P. Association analysis of genetic polymorphisms and expression levels of selected genes involved in extracellular matrix turnover and angiogenesis with the risk of age-related macular degeneration. Ophthalmic Genet 2018; 39:684-698. [PMID: 30289322 DOI: 10.1080/13816810.2018.1525752] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
BACKGROUND Age-related macular degeneration is a progressive eye disease affecting the macula and causing acute visual loss particularly in elder people. The aim of the study was an attempt to discern an influence of expression levels and functional genetic polymorphisms of selected genes related to the extracellular matrix turnover or neovascularization on age-related macular degeneration occurrence and progression. METHODS We conducted a case-control study of 200 polish patients with recognized age-related macular degeneration (dry and wet) and compared the results with those obtained from matched 100 healthy control subjects. TaqMan Genotyping Assays were employed to examine the following single nucleotide polymorphisms: matrix metalloproteinase (MMP)-2 -735C/T, MMP-7 -181A/G, MMP-9 -1702T/A, and -1562C/T; tissue inhibitors of metalloproteinase (TIMP)-2 -418G/C; vascular endothelial growth factor (VEGF) +405 G/C and +936 C/T, VEGFR-2 +1719 T/A and -271 G/A. Real-time polymerase chain reaction was assessed to determine the mRNA quantity. Serum levels of proteins were measured using enzyme-linked immunosorbent assay. RESULTS The single nucleotide polymorphism genotyping showed that TT genotype for MMP-9 -1702T/A and CC genotype for VEGF +936C/T increase markedly the risk of age-related macular degeneration but do not influence on its progression. Additionally, the possible protective effect of CC genetic variant in MMP-9 -1562C/T polymorphism against progression of age-related macular degeneration was observed. We also found significant differences in systemic expression levels of MMP-2, -7, -9, TIMP-2, vascular endothelial growth factor, VEGFR-2, and pigment epithelium-derived factor between studied group. The research demonstrated evident differences in serum levels of MMP-2, -7, -9, TIMP-2, vascular endothelial growth factor, and pigment epithelium-derived factor between wet and dry age-related macular degeneration patients. CONCLUSIONS We can conclude that disturbances in angiogenic homeostasis and processes of extracellular matrix turnover occurring in age-related macular degeneration-affected ocular tissues may be reflected in changes in systemic expression levels of the investigated genes.
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Affiliation(s)
- Katarzyna Oszajca
- a Department of Medical Biochemistry , Medical University of Lodz , Lodz , Poland
| | - Maciej Szemraj
- b Department of Ophthalmology and Visual Rehabilitation , Central Veterans' Hospital , Lodz , Poland
| | - Janusz Szemraj
- a Department of Medical Biochemistry , Medical University of Lodz , Lodz , Poland
| | - Piotr Jurowski
- b Department of Ophthalmology and Visual Rehabilitation , Central Veterans' Hospital , Lodz , Poland
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Hu K, Xie X, Wang R, Wu F, Zhang Y. Association of the rs2071559 (T/C) polymorphism with lymphatic metastasis in patients with nasopharyngeal carcinoma. Oncol Lett 2017; 14:7681-7686. [PMID: 29344214 PMCID: PMC5755165 DOI: 10.3892/ol.2017.7209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Accepted: 01/12/2017] [Indexed: 11/05/2022] Open
Abstract
Vascular endothelial growth factor (VEGF) and its receptor, VEGFR2, serve a critical role in angiogenesis and lymphangiogenesis, which are involved in the initiation and progression of malignancies. Specific single nucleotide polymorphisms of VEGF and VEGFR2 have been shown to modulate gene expression and influence malignancy aggressiveness. The aim of the present study was to determine whether the VEGFR2 rs2071559 (T/C) polymorphism is associated with the risk of developing nasopharyngeal carcinoma (NPC) and the aggressiveness of NPC in a southern Chinese population. A case-control study comprising 171 NPC patients and 184 healthy individuals was performed. Genotyping of the rs2071559 polymorphism was performed by quantitative polymerase chain reaction using TaqMan probes. Genotype and allele distribution of the rs2071559 polymorphism was not associated with the risk of NPC following adjustment for age, sex and ethnicity by multivariate logistic regression analyses. Regional lymph node metastasis was significantly correlated with the rs2071559 C allele and the related genotypes (OR 0.402, 95% CI 0.193-0.835, P=0.016; and OR 0.347, 95% CI 0.145-0.829, P=0.024, respectively). No correlations between genotype or allele distribution and the primary tumor size, distant metastasis, clinical stage, or histological type were observed. The rs2071559 polymorphism was shown to have an association with lymphatic metastasis in patients with NPC; however, the precise molecular mechanism should be elucidated in additional studies.
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Affiliation(s)
- Kai Hu
- Department of Radiation Oncology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Xiujing Xie
- Department of Ultrasonic Medicine, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Rensheng Wang
- Department of Radiation Oncology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Fang Wu
- Department of Radiation Oncology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Yong Zhang
- Department of Radiation Oncology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
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Mazdeh M, Noroozi R, Gharesouran J, Sayad A, Komaki A, Eftekharian MM, Habibi M, Toghi M, Taheri M. The Importance of VEGF-KDR Signaling Pathway Genes should Not Be Ignored When the Risk of Developing Multiple Sclerosis is Taken into Consideration. J Mol Neurosci 2017; 62:73-78. [PMID: 28401369 DOI: 10.1007/s12031-017-0912-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Accepted: 03/21/2017] [Indexed: 12/29/2022]
Abstract
Vascular endothelial growth factor (VEGF) and its receptor kinase insert domain-containing receptor (KDR) pathway trigger the process of angiogenesis as well as inflammation, which contributes to the development and progression of demyelinating lesions in multiple sclerosis. This work is a case-control study comprising of a total of 400 subjects with multiple sclerosis and 400 healthy controls. Participants were subjected to neurological examination and peripheral blood sampling for genotyping. Polymorphisms in the VEGF and KDR genes were assessed using the restriction fragment length polymorphism (RFLP-PCR) method. A significantly higher frequency of the T allele and TT genotype of the VEGF 936C > T (rs3025039) polymorphism was found in the multiple sclerosis group than in the healthy control group (P = 0.01 [OR = 1.41] and P = 0.01 [OR = 3.12], respectively). In addition, VEGF 936C > T showed an association with patients in a recessive model. However, the KDR -604T > C (rs2071559) polymorphism showed no significant difference in either allelic or genotype frequency between the two groups. Taken together, the results of the present study suggests that the T allele of the rs3025039 in VEGF gene could be considered a risk factor for developing multiple sclerosis in the Iranian population.
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Affiliation(s)
- Mehrdokht Mazdeh
- Neurophysiology Research Center, Hamadan University of Medical Sciences, Hamadan, Iran.,Department of Neurology, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Rezvan Noroozi
- Young Researchers and Elite Club, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
| | - Jalal Gharesouran
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, 8th Floor, SBUMS Bldg., Next to Ayatollah Taleghani Hospital, Evin, Tehran, 198396-3113, Iran.,Department of Medical Genetics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Arezou Sayad
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, 8th Floor, SBUMS Bldg., Next to Ayatollah Taleghani Hospital, Evin, Tehran, 198396-3113, Iran
| | - Alireza Komaki
- Neurophysiology Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
| | | | - Mohsen Habibi
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, 8th Floor, SBUMS Bldg., Next to Ayatollah Taleghani Hospital, Evin, Tehran, 198396-3113, Iran
| | - Mehdi Toghi
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, 8th Floor, SBUMS Bldg., Next to Ayatollah Taleghani Hospital, Evin, Tehran, 198396-3113, Iran
| | - Mohammad Taheri
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, 8th Floor, SBUMS Bldg., Next to Ayatollah Taleghani Hospital, Evin, Tehran, 198396-3113, Iran. .,Urogenital Stem Cell Research Center, No 23, Shahid Labbafi Nejad Educational Hospital, Shahid Beheshti University of Medical Sciences, Amir Ebrahimi St, Pasdaran Ave, Tehran, Iran.
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Association of VEGFR-2 Gene Polymorphisms With Clopidogrel Resistance in Patients With Coronary Heart Disease. Am J Ther 2017; 23:e1663-e1670. [PMID: 25738571 DOI: 10.1097/mjt.0000000000000231] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Vascular endothelial growth factor receptor 2 (VEGFR-2) plays a central role in atherogenesis. We investigated the correlation between VEGFR-2 polymorphisms and the risk of clopidogrel resistance (CR) in patients with coronary heart disease (CHD). The study involved 275 patients with CHD undergoing percutaneous coronary intervention and on antiplatelet clopidogrel therapy. The participants were divided into CR group (n = 59) and non-CR group (NCR, n = 216) based on maximum platelet aggregation measurements. VEGFR-2 gene polymorphisms, +1192C>T (rs2305948), +1416T>A (rs1870377), and -271A>G (rs7667298), were genotyped using polymerase chain reaction-restriction fragment length polymorphism. Enzyme-linked immunosorbent assay was used to measure serum transforming growth factor, beta receptor 2 levels. CR was found in 59 patients (20.45%). A significantly higher proportion of patients in the CR group had a history of diabetes mellitus compared with the NCR group (P < 0.05). Genotype and allele frequency of VEGFR-2 +1192C>T (rs2305948) was significantly higher in the CR group than in the NCR group (all P < 0.01). In the VEGFR-2 +1192C>T (rs2305948), the angina pectoris, recurrent myocardial infarction, and combined end point events were significantly more prevalent in the TT carriers than in the CC + CT carriers. In VEGFR-2 -271A>G (rs7667298), the GG carriers had a lower proportion of target lesion revascularization and angina pectoris in contrast to the AA + AG carriers (all P < 0.05). Based on our results, VEGFR-2 +1192C>T (rs2305948) polymorphism is strongly associated with increased CR and main adverse cardiovascular event incidence in patients with CHD undergoing percutaneous coronary intervention. Additionally, patients with CHD with diabetes mellitus history were more likely to develop CR. The associations of +1416T>A (rs1870377) and -271A>G (rs7667298) polymorphisms with CR were inconclusive and will need to be examined further.
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Shahsavari S, Noormohammadi Z, Zare Karizi S. Association of kinase insert domain-containing receptor (KDR) gene polymorphism/ haplotypes with recurrent spontaneous abortion and genetic structure. Int J Reprod Biomed 2015; 13:755-64. [PMID: 27141535 PMCID: PMC4827512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Recurrent spontaneous abortion is one of the diseases that can lead to physical, psychological, and, economical problems for both individuals and society. Recently a few numbers of genetic polymorphisms in kinase insert domain-containing receptor (KDR) gene are examined that can endanger the life of the fetus in pregnant women. OBJECTIVE The risk of KDR gene polymorphisms was investigated in Iranian women with idiopathic recurrent spontaneous abortion (RSA). MATERIALS AND METHODS A case controlled study was performed. One hundred idiopathic recurrent spontaneous abortion patients with at least two consecutive pregnancy losses before 20 weeks of gestational age with normal karyotypes were included in the study. Also, 100 healthy women with at least one natural pregnancy were studied as control group. Two functional SNPs located in KDR gene; rs1870377 (Q472H), and rs2305948 (V297I) as well as one tag SNP in the intron region (rs6838752) were genotyped by using PCR based restriction fragment length polymorphism (PCR-RFLP) technique. Haplotype frequency was determined for these three SNPs' genotypes. Analysis of genetic STRUCTURE and K means clustering were performed to study genetic variation. RESULTS Functional SNP (rs1870377) was highly linked to tag SNP (rs6838752) (D´ value=0. 214; χ(2) = 16.44, p<0. 001). K means clustering showed that k = 8 as the best fit for the optimal number of genetic subgroups in our studied materials. This result was in agreement with Neighbor Joining cluster analysis. CONCLUSION In our study, the allele and genotype frequencies were not associated with RSA between patient and control individuals. Inconsistent results in different populations with different allele frequencies among RSA patients and controls may be due to ethnic variation and used sample size.
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Genetic Variations of Kinase Inserts Domain Receptor (KDR) Gene Are Associated with the Risk of Astrocytomas. Mol Neurobiol 2015; 53:2541-9. [PMID: 26081139 DOI: 10.1007/s12035-015-9239-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Accepted: 05/26/2015] [Indexed: 02/08/2023]
Abstract
Astrocytomas is one of the most common central nervous system (CNS) tumors with high mortality rate. Kinase insert domain receptor (KDR) is involved in the regulation of tumor angiogenesis, migration, and vascular permeability. The aim of the study was to explore the relationship between KDR polymorphisms and risk of astrocytomas. Blood samples were collected from 157 astrocytomas patients and 160 healthy controls. Three tag-SNPs (rs2071559C/T, rs2305948T/C, and rs1870377A/T) were identified from the International HapMap Project Databases and genotyped using the method of polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). We evaluated the astrocytomas risk caused by individual SNPs and haplotype using odds ratios (ORs) and their 95 % confidence intervals (CIs). In the overall individual SNP analysis, the C allele of rs2071559 was correlated with an increased risk of astrocytomas. However, individuals with mutant allele A and genotype TA + AA of rs1870377 showed a protective effect against astrocytomas. Subgroup analysis based on WHO tumor grade revealed that the C allele of rs2071559 had more influence with the risk of astrocytomas in the grade III-IV (OR = 1.91) subgroup than the grade I-II (OR = 1.47) group. Genotype TT of rs2305948 was found to be significantly associated with susceptibility of astrocytomas only in the grade III-IV subgroup. The protective effect of rs1870377 did not reveal significant difference between the grade III-IV and grade I-II subgroups. Meanwhile, stratified analysis demonstrated that mutation of rs2071559 and rs2305948 could elevate the risk of astrocytomas more significantly in the subgroup of smokers than the nonsmokers. Interestingly, the protective effect of rs1870377 was more obvious in the nonsmokers than the smokers. Additionally, haplotype-specific analysis showed that haplotype CCT and CTT were related with an increased risk of astrocytomas. We found that individual with variants of rs2071559*C and rs2305948*T might significantly elevate the risk of astrocytomas, while mutants of rs1870377*A was associated with the decreased risk of astrocytomas. Further studies about ethnically diverse populations with larger sample size should be performed to confirm the correlation between KDR gene polymorphisms and risk of astrocytomas.
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Clinical relevance of vascular endothelial growth factor type A (VEGFA) and VEGF receptor type 2 (VEGFR2) gene polymorphism in chronic lymphocytic leukemia. Blood Cells Mol Dis 2015; 54:139-43. [DOI: 10.1016/j.bcmd.2014.11.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Accepted: 11/14/2014] [Indexed: 01/20/2023]
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Shahsavari S, Noormohammadi Z, Zare Karizi S. Association of kinase insert domain-containing receptor (KDR) gene polymorphism/ haplotypes with recurrent spontaneous abortion and genetic structure. Int J Reprod Biomed 2015. [DOI: 10.29252/ijrm.13.12.755] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
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Mahlman M, Huusko JM, Karjalainen MK, Kaukola T, Marttila R, Ojaniemi M, Haataja R, Lavoie PM, Rämet M, Hallman M. Genes Encoding Vascular Endothelial Growth Factor A (VEGF-A) and VEGF Receptor 2 (VEGFR-2) and Risk for Bronchopulmonary Dysplasia. Neonatology 2015; 108:53-9. [PMID: 25998098 DOI: 10.1159/000381279] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Accepted: 02/26/2015] [Indexed: 11/19/2022]
Abstract
BACKGROUND Bronchopulmonary dysplasia (BPD) is one of the main consequences of prematurity, with notably high heritability. Vascular endothelial growth factor A (VEGF-A) and its main receptor, vascular endothelial growth factor receptor 2 (VEGFR-2), have been implicated in the pathogenesis of BPD. OBJECTIVE To study whether common polymorphisms of the genes encoding VEGF-A and VEGFR-2 are associated with BPD. METHODS In this association study, six tagging single nucleotide polymorphism (tSNPs) for VEGFA and 25 tSNPs for VEGFR2 were genotyped in a prospectively collected, genetically homogeneous discovery population of 160 infants (44 infants with grade 2-3 BPD) born before 30 completed gestational weeks. The replication population of 328 infants included 120 cases of BPD. RESULTS VEGFR2 SNP rs4576072 was associated with BPD grade 2-3 with a minor allele frequency in 23.9% of the cases compared to 9.1% in controls (p = 0.0005, odds ratio 3.15, 95% CI: 1.62-6.12) in the discovery population. This association was not observed in the more heterogeneous replication population. CONCLUSIONS In line with the results of recent large-scale genetic studies, our findings indicate that common polymorphisms of the genes encoding VEGF-A and VEGFR-2 are not consistently associated with BPD. This finding does not rule out the involvement of VEGFA and VEGFR2 in BPD pathogenesis since, in addition to common variations within the gene region, other mechanisms also play important roles in the regulation of gene function.
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Affiliation(s)
- Mari Mahlman
- PEDEGO Research Center, and Medical Research Center Oulu, University of Oulu, Oulu, Finland
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Jang MJ, Jeon YJ, Kim JW, Cho YK, Lee SK, Hwang SG, Oh D, Kim NK. Association of VEGF and KDR single nucleotide polymorphisms with colorectal cancer susceptibility in Koreans. Mol Carcinog 2012; 52 Suppl 1:E60-9. [PMID: 23169005 DOI: 10.1002/mc.21980] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2011] [Revised: 10/17/2012] [Accepted: 10/22/2012] [Indexed: 12/16/2022]
Abstract
Vascular endothelial growth factor (VEGF) and its receptor kinase insert domain-containing receptor (KDR) play crucial roles in angiogenesis, which contributes to the development and progression of solid tumors. The aim of this study was to investigate the associations of VEGF (-2578C > A, -1154G > A, -634G > C, and 936C > T) and KDR (-604T > C and 1192G > A) polymorphisms with the development of colorectal cancer (CRC). A total of 882 participants (390 CRC patients and 492 controls) were enrolled in the study. The genotyping of VEGF and KDR polymorphisms was performed by polymerase chain reaction-restriction fragment length polymorphism assay. We found that the CT and TT genotype of the 936C > T was associated with an increased risk of CRC compared with the CC genotype as the dominant model for the T allele. In addition, we also found a increased CRC risk with TC + CC genotype of KDR -604T > C compared with TT genotype in CRC patients and control subjects. Similarly, KDR 1192G > A also showed significant association between 1192G > A variants and risk of CRC. In the haplotype analyses, haplotype -2578A/-1154A/-634G/936T of VEGF polymorphisms and haplotype -604C/1192G and -604C/1192A of KDR polymorphisms were associated with an increased susceptibility of CRC. Our results suggest that the VEGF 936C > T, KDR -604T > C, and KDR 1192G > A polymorphisms may be contribute to CRC risk in the Korean population.
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Affiliation(s)
- Moon Ju Jang
- Department of Internal Medicine, School of Medicine, CHA University, Seongnam, South Korea
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An SJ, Huang YS, Chen ZH, Su J, Yang Y, Chen JG, Yan HH, Lin QX, Yang JJ, Yang XN, Zhou Q, Zhang XC, Wu YL. Posttreatment plasma VEGF levels may be associated with the overall survival of patients with advanced non-small cell lung cancer treated with bevacizumab plus chemotherapy. Med Oncol 2012; 29:627-32. [PMID: 21461966 DOI: 10.1007/s12032-011-9924-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2010] [Accepted: 03/22/2011] [Indexed: 12/26/2022]
Abstract
We sought to find blood-based biomarkers that can be used to predict efficacy in advanced non-small cell lung cancer patients treated with bevacizumab plus chemotherapy. Blood was collected before treatment and after 6 weeks of therapy from patients who were participating in a phase 4 trial. Plasma vascular endothelial growth factor (VEGF) levels were evaluated by ELISA. A total of eight single nucleotide polymorphisms in four candidate genes were analyzed by PCR and sequencing. A total of 45 patients enrolled in a clinical trial at Guangdong General Hospital between August 2007 and March 2008 were used as subjects. The median survival times of OS was 25.6 and 13.4 months in the low and high groups, respectively, when the median posttreatment plasma VEGF level (46.63 pg/ml) was used as the cut-off point (P = 0.0284). Patients carrying the AA genotype at the -6C > A polymorphism in laminin 5 (LN5) were more likely to exhibit reduced hemoglobin compared with patients carrying the CA/CC genotype (OR = 8.364, χ(2) = 5.34, P = 0.021). Similar associations were found at the -89A > G and -260C > A polymorphisms in LN5. Patients with the CC genotype at the -6C > A polymorphism in LN5 had an increased risk of neutropenia than those with the CA/AA genotype (OR = 4.444, χ(2) = 5.116, P = 0.030). Our results show improved survival in patients with lower posttreatment plasma VEGF levels treated with bevacizumab plus chemotherapy; thus, the posttreatment plasma VEGF level may be a promising biomarker to predict clinical benefit early in the course of therapy. Polymorphisms in LN5 were associated with a reduced level of hemoglobin and neutropenia.
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MESH Headings
- Adenocarcinoma/drug therapy
- Adenocarcinoma/metabolism
- Adenocarcinoma/mortality
- Adult
- Aged
- Antibodies, Monoclonal, Humanized/administration & dosage
- Antineoplastic Combined Chemotherapy Protocols/therapeutic use
- Bevacizumab
- Carcinoma, Large Cell/drug therapy
- Carcinoma, Large Cell/metabolism
- Carcinoma, Large Cell/mortality
- Carcinoma, Non-Small-Cell Lung/drug therapy
- Carcinoma, Non-Small-Cell Lung/metabolism
- Carcinoma, Non-Small-Cell Lung/mortality
- Cell Adhesion Molecules/genetics
- Enzyme-Linked Immunosorbent Assay
- Female
- Follow-Up Studies
- Humans
- Lung Neoplasms/drug therapy
- Lung Neoplasms/metabolism
- Lung Neoplasms/mortality
- Male
- Middle Aged
- Neoplasm Recurrence, Local/drug therapy
- Neoplasm Recurrence, Local/metabolism
- Neoplasm Recurrence, Local/mortality
- Neoplasm Staging
- Organoplatinum Compounds/administration & dosage
- Polymorphism, Genetic/genetics
- Prognosis
- Survival Rate
- Vascular Endothelial Growth Factor A/metabolism
- Kalinin
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Affiliation(s)
- She-Juan An
- Medical Research Center of Guangdong General Hospital, Guangdong Lung Cancer Institute, Guangdong Academy of Medical Sciences, 510080 Guangzhou, Guangdong, Peoples Republic of China
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Uzunoglu FG, Kaufmann C, Wikman H, Güngör C, Bohn BA, Nentwich MF, Reeh M, Pantel K, Bockhorn M, Kutup A, Mann O, Izbicki JR, Vashist YK. Vascular Endothelial Growth Factor Receptor 2 Gene Polymorphisms as Predictors for Tumor Recurrence and Overall Survival in Non-Small-Cell Lung Cancer. Ann Surg Oncol 2012; 19:2159-68. [DOI: 10.1245/s10434-012-2227-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2011] [Indexed: 12/13/2022]
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Glubb DM, Cerri E, Giese A, Zhang W, Mirza O, Thompson EE, Chen P, Das S, Jassem J, Rzyman W, Lingen MW, Salgia R, Hirsch FR, Dziadziuszko R, Ballmer-Hofer K, Innocenti F. Novel functional germline variants in the VEGF receptor 2 gene and their effect on gene expression and microvessel density in lung cancer. Clin Cancer Res 2011; 17:5257-67. [PMID: 21712447 DOI: 10.1158/1078-0432.ccr-11-0379] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
PURPOSE VEGF receptor 2 (VEGFR-2) plays a crucial role in mediating angiogenic endothelial cell responses via the VEGF pathway, and angiogenesis inhibitors targeting VEGFR-2 are in clinical use. As angiogenesis is a host-driven process, functional heritable variation in KDR, the gene encoding VEGFR-2, may affect VEGFR-2 function and, ultimately, the extent of tumor angiogenesis. EXPERIMENTAL DESIGN We resequenced KDR using 24 DNAs each from healthy Caucasian, African American, and Asian groups. Nonsynonymous genetic variants were assessed for function by phosphorylation assays. Luciferase reporter gene assays were used to examine effects of variants on gene expression. KDR mRNA and protein expression and microvessel density (MVD) were measured in non-small cell lung cancer (NSCLC) tumor samples, and matching patient DNA samples were genotyped to test for associations with variants of interest. RESULTS KDR resequencing led to the discovery of 120 genetic variants, of which 25 had not been previously reported. Q472H had increased VEGFR-2 protein phosphorylation and associated with increased MVD in NSCLC tumor samples. -2854C and -2455A increased luciferase expression and associated with higher KDR mRNA levels in NSCLC samples. -271A reduced luciferase expression and associated with lower VEGFR-2 levels in NSCLC samples. -906C and 23408G associated with higher KDR mRNA levels in NSCLC samples. CONCLUSIONS This study has defined KDR genetic variation in 3 populations and identified common variants that impact on tumoral KDR expression and vascularization. These findings may have important implications for understanding the molecular basis of genetic associations between KDR variation and clinical phenotypes related to VEGFR-2 function.
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Nguewa PA, Calvo A, Pullamsetti SS, Banat GA, Grimminger F, Savai R. Tyrosine kinase inhibitors with antiangiogenic properties for the treatment of non-small cell lung cancer. Expert Opin Investig Drugs 2010; 20:61-74. [PMID: 21142806 DOI: 10.1517/13543784.2011.541153] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
IMPORTANCE OF THE FIELD The 5-year survival rate in NSCLC remains < 15% in spite of new chemotherapeutic regimens and targeted therapies. Tyrosine kinase inhibitors (TKIs) with antiangiogenic properties show promise as a new therapeutic approach for NSCLC in recent studies. AREAS COVERED IN THIS REVIEW This article reviews significant preclinical and clinical studies related to TKI therapy. Many drugs that target tyrosine kinases involved in tumor angiogenesis have recently been developed. Results of preclinical experiments and clinical trials for NSCLC are quite promising. However, response rates are low and the duration of therapeutic response is short. Mechanisms of resistance may reduce the efficacy of TKI therapy, and biomarkers of response are needed to select patients who are more likely to benefit from the therapy. Studies in mice have shown that antiangiogenic TKIs may increase metastasis, although no clear clinical evidence supports these results. WHAT THE READER WILL GAIN An understanding of the mechanisms of action, clinical trial results, biomarkers of response, adverse effects and possible mechanisms of resistance associated with novel TKI therapy in NSCLC. TAKE HOME MESSAGE More preclinical and clinical research on the efficacy of TKIs in treating NSCLC is needed, but present results offer great hope for patients.
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Affiliation(s)
- Paul A Nguewa
- Center for Applied Medical Research (CIMA), Division of Oncology, University of Navarra, Pamplona, 31008, Spain
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Sun S, Yan PS, Huang THM, Lin S. Identifying differentially methylated genes using mixed effect and generalized least square models. BMC Bioinformatics 2009; 10:404. [PMID: 20003206 PMCID: PMC2800121 DOI: 10.1186/1471-2105-10-404] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2009] [Accepted: 12/09/2009] [Indexed: 11/10/2022] Open
Abstract
Background DNA methylation plays an important role in the process of tumorigenesis. Identifying differentially methylated genes or CpG islands (CGIs) associated with genes between two tumor subtypes is thus an important biological question. The methylation status of all CGIs in the whole genome can be assayed with differential methylation hybridization (DMH) microarrays. However, patient samples or cell lines are heterogeneous, so their methylation pattern may be very different. In addition, neighboring probes at each CGI are correlated. How these factors affect the analysis of DMH data is unknown. Results We propose a new method for identifying differentially methylated (DM) genes by identifying the associated DM CGI(s). At each CGI, we implement four different mixed effect and generalized least square models to identify DM genes between two groups. We compare four models with a simple least square regression model to study the impact of incorporating random effects and correlations. Conclusions We demonstrate that the inclusion (or exclusion) of random effects and the choice of correlation structures can significantly affect the results of the data analysis. We also assess the false discovery rate of different models using CGIs associated with housekeeping genes.
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Affiliation(s)
- Shuying Sun
- Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, Ohio 44106, USA.
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