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Li H, Jia C, Li C, Wang Y, Du W, Jiang H. Anthracycline chemicals with anthracyclinone structure exert antitumor effects by inhibiting angiogenesis and lymphangiogenesis in a xenografted gastric tumor model. Gastric Cancer 2023; 26:863-877. [PMID: 37344705 DOI: 10.1007/s10120-023-01412-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 06/14/2023] [Indexed: 06/23/2023]
Abstract
BACKGROUND It is vital to screen or develop alternative therapeutic drugs with higher curative characteristics and fewer side effects for the clinical treatment of gastric cancer. METHODS Gastric cancer cells were exposed to different auramycin G doses while determining the impact on cell viability, migration, and invasion. Then the antitumor effects of auramycin G, 5-fluorouracil (5-Fu) and their combination were evaluated. Furthermore, the molecular mechanisms of angiogenesis and lymphangiogenesis regulated by auramycin G and its analogs were investigated. RESULTS Auramycin G inhibited cell viability in a dose-dependent manner, with a 50% inhibitory concentration of 23.72 ± 6.36 mg/L and 32.54 ± 5.91 mg/L for AGS and MGC803 cells, respectively. The migration and invasion of gastric cancer cells were significantly inhibited by 10 mg/L auramycin G, which was consistent with the down-regulation of the VEGFR2-VEGFA-pPI3K-pAkt-pErk1 and VEGFR3-VEGFC-pPI3K-pAkt-pmTOR proteins. Notably, the average tumor weights were significantly reduced in both the auramycin G (2.21 ± 0.45 g) of 50 mg/kg body weight and auramycin G + 5-fluorouracil (5-Fu) groups (1.33 ± 0.28 g), compared with the control (3.73 ± 0.56 g). Considering that auramycin G decreased the growth of blood and lymphatic vessels while reducing the degree of tumor malignancy, it effectively suppressed tumors by regulating the angiogenic and lymphangiogenic pathways. CONCLUSION The present study confirmed that auramycin G displayed a prominent antitumor activity in gastric tumor models, both in vitro and in vivo. Moreover, it was confirmed that auramycin G played a specific role in certain gastric cancer cell types, while the mechanism was validated to be associated with angiogenesis- and lymphangiogenesis-related pathway suppression.
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Affiliation(s)
- Huiying Li
- College of Biological Sciences and Technology, Beijing Key Laboratory of Food Processing and Safety in Forestry, Beijing Forestry University, Beijing, People's Republic of China
| | - Cuicui Jia
- College of Biological Sciences and Technology, Beijing Key Laboratory of Food Processing and Safety in Forestry, Beijing Forestry University, Beijing, People's Republic of China
| | - Chaonan Li
- College of Biological Sciences and Technology, Beijing Key Laboratory of Food Processing and Safety in Forestry, Beijing Forestry University, Beijing, People's Republic of China
| | - Yang Wang
- State Key Laboratory of Membrane Biology, School of Life Sciences, Tsinghua University-Peking University Joint Center for Life Sciences, Tsinghua University, Beijing, People's Republic of China
| | - Weimin Du
- College of Biological Sciences and Technology, Beijing Key Laboratory of Food Processing and Safety in Forestry, Beijing Forestry University, Beijing, People's Republic of China
| | - Hongpeng Jiang
- Department of General Surgery, Beijing Key Laboratory of Cancer Invasion and Metastasis Research and National Clinical Research Center for Digestive Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing, People's Republic of China.
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Wang H, Chen H, Fu Y, Liu M, Zhang J, Han S, Tian Y, Hou H, Hu Q. Effects of Smoking on Inflammatory-Related Cytokine Levels in Human Serum. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27123715. [PMID: 35744838 PMCID: PMC9227219 DOI: 10.3390/molecules27123715] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 06/02/2022] [Accepted: 06/07/2022] [Indexed: 11/16/2022]
Abstract
Cardiovascular and respiratory diseases, and several cancers resulting from tobacco smoking, are initially characterized by chronic systemic inflammation. Cytokine imbalances can result in inflammation, making it important to understand the pathological mechanisms behind cytokine production. In this study, we collected blood samples from 78 healthy male volunteers, including non-smokers (n = 30), current smokers (n = 30), and ex-smokers (n = 18), and utilized the liquid suspension chip technique to investigate and compare the expression levels of 17 cytokines and chemokines in the human serum of these volunteers. The results demonstrated that the expression levels of CXCL9/MIG and sIL-6R significantly increased after smoking, and continued to increase after quitting smoking. The expression levels of TARC, ITAC, and sVEGFR-3 increased after smoking but decreased after quitting smoking; the expression level of SAA significantly decreased after smoking and showed an upward trend after quitting smoking. Seven cytokines (IL-1β, BCA-1, TNF-α, CRP, ENA-78, MDC, and TNFRII) did not vary between the three groups, while four cytokines (IL-1α, IL-6, IL-8, and SCF) were not detected in any serum sample. In conclusion, this study assessed the physiological production of cytokines and chemokines, highlighting the differences in each due to smoking status. Our results could help evaluate the early development of smoking-related chronic diseases and cancers.
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Affiliation(s)
| | | | | | | | | | | | | | - Hongwei Hou
- Correspondence: (H.H.); (Q.H.); Tel.: +86-135-9809-8330 (H.H.); +86-139-0384-3190 (Q.H.); Fax: +86-0371-67672625 (H.H. & Q.H.)
| | - Qingyuan Hu
- Correspondence: (H.H.); (Q.H.); Tel.: +86-135-9809-8330 (H.H.); +86-139-0384-3190 (Q.H.); Fax: +86-0371-67672625 (H.H. & Q.H.)
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3
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Wang K, Liu Y, Huang S, Li H, Hou J, Huang J, Chen J, Feng K, Liang M, Chen G, Wu Z. Does an imbalance in circulating vascular endothelial growth factors (VEGFs) cause atrial fibrillation in patients with valvular heart disease? J Thorac Dis 2019; 11:5509-5516. [PMID: 32030270 DOI: 10.21037/jtd.2019.11.32] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Background The pathogenesis of atrial fibrillation (AF) remains unclear. Vascular endothelial growth factors (VEGFs) can stimulate fibrosis within the atrium and ventricle. We hypothesized that there is a relationship between the serum VEGFs/soluble vascular endothelial growth factor receptor (sVEGFRs) levels and AF in patients with valvular heart disease (VHD). This provides a new paradigm for studying AF. Methods The plasma levels of VEGF-A, VEGF-C, sVEGFR-1 and sVEGFR-2 were detected by enzyme-linked immunosorbent assay (ELISA). A total of 100 people, consisting of AF patients (long-standing, persistent AF; n=49), sinus rhythm (SR) patients (n=31) and healthy controls (n=20), were included in this study. Results The plasma levels of VEGF-A were significantly higher in AF patients compared to healthy control (P<0.05). The plasma levels of sVEGFR-1 were significantly higher in AF compared to SR (P<0.05). The plasma levels of sVEGFR-2 were significantly lower in AF patients compared to SR patients and healthy controls (both P<0.05). There was a significant and negative correlation between AF and the sVEGFR-2 levels in the groups (r=-0.432, P=0.000). Conclusions An imbalance in VEGFs and sVEGFRs may contribute to AF by breaking the balance of angiogenesis and lymphangiogenesis. Additionally, sVEGFR-2 may be an important biomarker of AF.
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Affiliation(s)
- Keke Wang
- Department of Cardiac Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China.,Department of Emergency, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Yanyan Liu
- Department of Pathology, The First Affiliated Hospital of Traditional Medicine University, Guangzhou 510405, China
| | - Suiqing Huang
- Department of Cardiac Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China.,Key Laboratory of Assisted Circulation, Ministry of Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Huayang Li
- Department of Cardiac Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Jian Hou
- Department of Cardiac Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China.,Key Laboratory of Assisted Circulation, Ministry of Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Jiaxing Huang
- Department of Cardiac Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Jiantao Chen
- Department of Cardiac Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Kangni Feng
- Department of Cardiac Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Mengya Liang
- Department of Cardiac Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Guangxian Chen
- Department of Cardiac Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Zhongkai Wu
- Department of Cardiac Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China.,Key Laboratory of Assisted Circulation, Ministry of Health, Sun Yat-sen University, Guangzhou 510080, China
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Pirouzpanah S, Varshosaz P, Fakhrjou A, Montazeri V. The contribution of dietary and plasma folate and cobalamin to levels of angiopoietin-1, angiopoietin-2 and Tie-2 receptors depend on vascular endothelial growth factor status of primary breast cancer patients. Sci Rep 2019; 9:14851. [PMID: 31619709 PMCID: PMC6795805 DOI: 10.1038/s41598-019-51050-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 09/20/2019] [Indexed: 12/12/2022] Open
Abstract
The aim of this study was to determine the association of dietary folate and cobalamin with plasma levels of Angiopoietins (ANG), vascular endothelial growth factor-C (VEGF-C) and tyrosine kinase receptor-2 (Tie-2) of primary breast cancer patients. Women (n = 177), aged 30 to 75 years diagnosed with breast cancer were recruited from an ongoing case series study. Dietary intake of nutrients was estimated by using a validated food frequency questionnaire. Enzyme-linked immunosorbent assay was applied to measure biomarkers. MCF-7 cell cultures were supplemented with folic acid (0–40 μM) for 24 h to measure cell viability and fold change of expression by the real-time reverse transcriptase-polymerase chain reaction. Structural equation modeling was applied to analyze the structural relationships between the measured variables of nutrients and Angiopoietins. Dietary intake of folate and cobalamin showed a significant inverse correlation with plasma ANG-1 and ANG-2 (P < 0.05), particularly in subjects with estrogen-receptor positive tumors or low plasma VEGF-C. Plasma folate was positively associated with the ratio of ANG-1/ANG-2 (P < 0.05). Residual intake levels of total cobalamin were inversely associated with plasma ANG-1 when plasma stratum of VEGF-C was high (P < 0.05). Structural equation modeling identified a significant inverse contribution of folate profiles on the latent variable of Angiopoietins (coefficient β = −0.99, P < 0.05). Folic acid treatment resulted in dose-dependent down-regulations on ANGPT1 and ANGPT1/ANGPT2 ratio but VEGF and ANGPT2/VEGF were upregulated at folic acid >20 μM. Studying the contributing role of dietary folate to pro-angiogenic biomarkers in breast cancer patients can infer the preventive role of folate in the ANGs/VEGF-C-dependent cascade of tumor metastasis. By contrast, high concentrations of folic acid in vitro supported VEGF-C-dependent ANGPT2 overexpression might potentiate micro-lymphatic vessel development to support malignant cell dissemination.
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Affiliation(s)
- Saeed Pirouzpanah
- Molecular Medicine Research Center, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, 5166614711, Iran.
| | - Parisa Varshosaz
- Drug Applied Research Center/ and also Department of Biochemistry and Dietetics, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, 5166614711, Iran.,Student's Research Committee, Tabriz University of Medical Sciences, Tabriz, 5165665811, Iran
| | - Ashraf Fakhrjou
- Department of Pathology, School of Medicine, Tabriz University of Medical Sciences, Tabriz, 5156913193, Iran
| | - Vahid Montazeri
- Department of Thoracic Surgery, Faculty of Medicine, Surgery Ward, Tabriz University of Medical Sciences, and also Nour-Nejat Hospital, Tabriz, 5138665793, Iran
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De Rosa L, Di Stasi R, D'Andrea LD. Pro-angiogenic peptides in biomedicine. Arch Biochem Biophys 2018; 660:72-86. [DOI: 10.1016/j.abb.2018.10.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 10/11/2018] [Accepted: 10/13/2018] [Indexed: 12/12/2022]
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6
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Li Y, Weng Y, Zhong L, Chong H, Chen S, Sun Y, Li W, Shi Q. VEGFR3 inhibition chemosensitizes lung adenocarcinoma A549 cells in the tumor-associated macrophage microenvironment through upregulation of p53 and PTEN. Oncol Rep 2017; 38:2761-2773. [PMID: 29048623 PMCID: PMC5780029 DOI: 10.3892/or.2017.5969] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 05/25/2017] [Indexed: 12/22/2022] Open
Abstract
In lung adenocarcinoma, loss of p53 and PTEN in tumors are associated with decreased response to chemotherapy and decreased survival. A means to pharmacologically upregulate p53 and PTEN protein expression could improve the prognosis of patients with p53- and PTEN-deficient tumors. In the present study we revealed that vascular endothelial growth factor receptor 3 (VEGFR3) inhibition in lung adenocarcinoma cells was associated with improved expression levels of both p53 and PTEN in the tumor-associated macrophage (TAM) microenvironment. Inhibition of VEGFR3 in lung adenocarcinoma cells was associated with growth arrest and decreased migration and invasion. The upregulation of p53 and PTEN protein expression after VEGFR3 inhibition decreased chemotherapy resistance and improved chemosensitivity in co-cultured A549 cells in which p53 and PTEN expression were decreased. Finally, we demonstrated that TAMs promoted the expression of VEGF-C and its receptor VEGFR3. Western blot analysis revealed the co-cultured A549 cells with TAMs are a primary source of VEGF-C and VEGFR3 in the tumor microenvironment. Our studies revealed that VEGFR3 inhibition may be a pharmacological means to upregulate p53 and PTEN protein expression and improve the outcome of patients with p53- and PTEN-deficient tumors.
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Affiliation(s)
- Ya Li
- Department of Laboratory Medicine, M.O.E., Key Laboratory of Laboratory Medicine Diagnostics, Chongqing Medical University, Chongqing 400016, P.R.China
| | - Yaguang Weng
- Department of Laboratory Medicine, M.O.E., Key Laboratory of Laboratory Medicine Diagnostics, Chongqing Medical University, Chongqing 400016, P.R.China
| | - Liang Zhong
- Department of Laboratory Medicine, M.O.E., Key Laboratory of Laboratory Medicine Diagnostics, Chongqing Medical University, Chongqing 400016, P.R.China
| | - Huimin Chong
- Department of Laboratory Medicine, M.O.E., Key Laboratory of Laboratory Medicine Diagnostics, Chongqing Medical University, Chongqing 400016, P.R.China
| | - Sicheng Chen
- Department of Clinical Medicine, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Yanting Sun
- Department of Laboratory Medicine, M.O.E., Key Laboratory of Laboratory Medicine Diagnostics, Chongqing Medical University, Chongqing 400016, P.R.China
| | - Wang Li
- Department of Laboratory Medicine, M.O.E., Key Laboratory of Laboratory Medicine Diagnostics, Chongqing Medical University, Chongqing 400016, P.R.China
| | - Qiong Shi
- Department of Laboratory Medicine, M.O.E., Key Laboratory of Laboratory Medicine Diagnostics, Chongqing Medical University, Chongqing 400016, P.R.China
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Matrone A, Valerio L, Pieruzzi L, Giani C, Cappagli V, Lorusso L, Agate L, Puleo L, Viola D, Bottici V, Del Re M, Molinaro E, Danesi R, Elisei R. Protein kinase inhibitors for the treatment of advanced and progressive radiorefractory thyroid tumors: From the clinical trials to the real life. Best Pract Res Clin Endocrinol Metab 2017; 31:319-334. [PMID: 28911728 DOI: 10.1016/j.beem.2017.06.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The last ten years have been characterized by the introduction in the clinical practice of new drugs named tyrosine kinase inhibitors for the treatment of several human tumors. After the positive conclusion of two international multicentric, randomized phase III clinical trials, two of these drugs, sorafenib and lenvatinib, have been recently approved and they are now available for the treatment of advanced and progressive radioiodine refractory thyroid tumors. We have been involved in most clinical trials performed with different tyrosine kinase inhibitors in different histotypes of thyroid cancer thus acquiring a lot of experience in the management of both drugs and their adverse events. Aim of this review is to give an overview of both the rationale for the use of these inhibitors in thyroid cancer and the major results of the clinical trials. Some suggestions for the management of treated patients in the real life are also provided.
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Affiliation(s)
- Antonio Matrone
- Unit of Endocrinology, Department of Clinical and Experimental Medicine, University Hospital of Pisa, Via Paradisa 2, 56124 Pisa, Italy
| | - Laura Valerio
- Unit of Endocrinology, Department of Clinical and Experimental Medicine, University Hospital of Pisa, Via Paradisa 2, 56124 Pisa, Italy
| | - Letizia Pieruzzi
- Unit of Endocrinology, Department of Clinical and Experimental Medicine, University Hospital of Pisa, Via Paradisa 2, 56124 Pisa, Italy
| | - Carlotta Giani
- Unit of Endocrinology, Department of Clinical and Experimental Medicine, University Hospital of Pisa, Via Paradisa 2, 56124 Pisa, Italy
| | - Virginia Cappagli
- Unit of Endocrinology, Department of Clinical and Experimental Medicine, University Hospital of Pisa, Via Paradisa 2, 56124 Pisa, Italy
| | - Loredana Lorusso
- Unit of Endocrinology, Department of Clinical and Experimental Medicine, University Hospital of Pisa, Via Paradisa 2, 56124 Pisa, Italy
| | - Laura Agate
- Unit of Endocrinology, Department of Clinical and Experimental Medicine, University Hospital of Pisa, Via Paradisa 2, 56124 Pisa, Italy
| | - Luciana Puleo
- Unit of Endocrinology, Department of Clinical and Experimental Medicine, University Hospital of Pisa, Via Paradisa 2, 56124 Pisa, Italy
| | - David Viola
- Unit of Endocrinology, Department of Clinical and Experimental Medicine, University Hospital of Pisa, Via Paradisa 2, 56124 Pisa, Italy
| | - Valeria Bottici
- Unit of Endocrinology, Department of Clinical and Experimental Medicine, University Hospital of Pisa, Via Paradisa 2, 56124 Pisa, Italy
| | - Marzia Del Re
- Unit of Pharmacology, Department of Clinical and Experimental Medicine, University Hospital of Pisa, Via Paradisa 2, 56124 Pisa, Italy
| | - Eleonora Molinaro
- Unit of Endocrinology, Department of Clinical and Experimental Medicine, University Hospital of Pisa, Via Paradisa 2, 56124 Pisa, Italy
| | - Romano Danesi
- Unit of Pharmacology, Department of Clinical and Experimental Medicine, University Hospital of Pisa, Via Paradisa 2, 56124 Pisa, Italy
| | - Rossella Elisei
- Unit of Endocrinology, Department of Clinical and Experimental Medicine, University Hospital of Pisa, Via Paradisa 2, 56124 Pisa, Italy.
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Tarallo V, De Falco S. The vascular endothelial growth factors and receptors family: Up to now the only target for anti-angiogenesis therapy. Int J Biochem Cell Biol 2015; 64:185-9. [PMID: 25936669 DOI: 10.1016/j.biocel.2015.04.008] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Revised: 04/16/2015] [Accepted: 04/17/2015] [Indexed: 10/23/2022]
Abstract
Angiogenesis is a complex biological phenomenon essential for a correct embryonic development and for post-natal growth. In adult life, it is a tightly regulated process but in several pathological conditions, angiogenesis results abnormal with either excessive or insufficient proliferation of blood vessels. The pro-angiogenic members of VEGF family, VEGF-A, VEGF-B and placental growth factor (PlGF), and the related receptors, VEGFR-1 and VEGFR-2, have a central and decisive role in pathological angiogenesis. Indeed, they are the targets for anti-angiogenic drugs currently approved: bevacizumab and ranibizumab, that specifically inhibit VEGF-A; aflibercept, that is able to prevent the activity of VEGF-A, VEGF-B and PlGF; several multirtarget tyrosine kinase inhibitors that are able to prevent VEGFR-1 and/or VEGFR-2 signaling. The anti-angiogenesis therapy has represented one of the most active fields of drug discovery of last decade and promises to be further expanded due the wide number of diseases for which it may by applied.
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Affiliation(s)
- Valeria Tarallo
- Angiogenesis Lab, Institute of Genetics and Biophysics 'Adriano Buzzati-Traverso' - CNR, 80131 Naples, Italy.
| | - Sandro De Falco
- Angiogenesis Lab, Institute of Genetics and Biophysics 'Adriano Buzzati-Traverso' - CNR, 80131 Naples, Italy; IRCCS MultiMedica, 20099 Milan, Italy.
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Lim JJ, Yang K, Taylor-Harding B, Wiedemeyer WR, Buckanovich RJ. VEGFR3 inhibition chemosensitizes ovarian cancer stemlike cells through down-regulation of BRCA1 and BRCA2. Neoplasia 2015; 16:343-53.e1-2. [PMID: 24862760 DOI: 10.1016/j.neo.2014.04.003] [Citation(s) in RCA: 97] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Revised: 04/02/2014] [Accepted: 04/03/2014] [Indexed: 11/28/2022] Open
Abstract
In ovarian cancer, loss of BRCA gene expression in tumors is associated with improved response to chemotherapy and increased survival. A means to pharmacologically downregulate BRCA gene expression could improve the outcomes of patients with BRCA wild-type tumors. We report that vascular endothelial growth factor receptor 3 (VEGFR3) inhibition in ovarian cancer cells is associated with decreased levels of both BRCA1 and BRCA2. Inhibition of VEGFR3 in ovarian tumor cells was associated with growth arrest. CD133(+) ovarian cancer stemlike cells were preferentially susceptible to VEGFR3-mediated growth inhibition. VEGFR3 inhibition-mediated down-regulation of BRCA gene expression reversed chemotherapy resistance and restored chemosensitivity in resistant cell lines in which a BRCA2 mutation had reverted to wild type. Finally, we demonstrate that tumor-associated macrophages are a primary source of VEGF-C in the tumor microenvironment. Our studies suggest that VEGFR3 inhibition may be a pharmacologic means to downregulate BRCA genes and improve the outcomes of patients with BRCA wild-type tumors.
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Affiliation(s)
- Jaeyoung J Lim
- Division of Hematology Oncology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Kun Yang
- Division of Hematology Oncology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Barbie Taylor-Harding
- Department of Obstetrics and Gynecology, University of California, Los Angeles, CA, USA
| | - W Ruprecht Wiedemeyer
- Department of Obstetrics and Gynecology, University of California, Los Angeles, CA, USA
| | - Ronald J Buckanovich
- Division of Hematology Oncology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA; Division of Gynecology and Oncology, Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, MI, USA.
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