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Zhu Q, Lu Y, Peng Y, He J, Wei Z, Li Z, Chen Y. [α2-macroglobulin alleviates glucocorticoid-induced avascular necrosis of the femoral head in mice by promoting proliferation, migration and angiogenesis of vascular endothelial cells]. Nan Fang Yi Ke Da Xue Xue Bao 2024; 44:712-719. [PMID: 38708505 DOI: 10.12122/j.issn.1673-4254.2024.04.13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/07/2024]
Abstract
OBJECTIVE To explore the mechanism underlying the protective effect of α2-macroglobulin (A2M) against glucocorticoid-induced femoral head necrosis. METHODS In a human umbilical vein endothelial cell (HUVEC) model with injuries induced by gradient concentrations of dexamethasone (DEX; 10-8-10-5 mol/L), the protective effects of A2M at 0.05 and 0.1 mg/mL were assessed by examining the changes in cell viability, migration, and capacity of angiogenesis using CCK-8 assay, Transwell and scratch healing assays and angiogenesis assay. The expressions of CD31 and VEGF-A proteins in the treated cells were detected using Western blotting. In BALB/c mouse models of avascular necrosis of the femoral head induced by intramuscular injections of methylprednisolone, the effects of intervention with A2M on femoral trabecular structure, histopathological characteristics, and CD31 expression were examined with Micro-CT, HE staining and immunohistochemical staining. RESULTS In cultured HUVECs, DEX treatment significantly reduced cell viability, migration and angiogenic ability in a concentration- and time-dependent manner (P<0.05), and these changes were obviously reversed by treatment with A2M in positive correlation with A2M concentration (P<0.05). DEX significantly reduced the expression of CD31 and VEGF-A proteins in HUVECs, while treatment with A2M restored CD31 and VEGF-A expressions in the cells (P<0.05). The mouse models of femoral head necrosis showed obvious trabecular damages in the femoral head, where a large number of empty lacunae and hypertrophic fat cells could be seen and CD31 expression was significantly decreased (P<0.05). A2M treatment of the mouse models significantly improved trabecular damages, maintained normal bone tissue structures, and increased CD31 expression in the femoral head (P<0.05). CONCLUSION A2M promotes proliferation, migration, and angiogenesis of DEX-treated HUVECs and alleviates methylprednisolone-induced femoral head necrosis by improving microcirculation damages and maintaining microcirculation stability in the femoral head.
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Affiliation(s)
- Q Zhu
- Department of Joint Surgery, Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510630, China
| | - Y Lu
- Department of Joint Surgery, Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510630, China
| | - Y Peng
- Department of Joint Surgery, Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510630, China
| | - J He
- Department of Joint Surgery, Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510630, China
| | - Z Wei
- Department of Joint Surgery, Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510630, China
| | - Z Li
- Department of Joint Surgery, Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510630, China
| | - Y Chen
- Department of Joint Surgery, Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510630, China
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Dastaviz F, Vahidi A, Khosravi T, Khosravi A, Sheikh Arabi M, Bagheri A, Rashidi M, Oladnabi M. Impact of umbelliprenin-containing niosome nanoparticles on VEGF-A and CTGF genes expression in retinal pigment epithelium cells. Int J Ophthalmol 2024; 17:7-15. [PMID: 38239942 PMCID: PMC10754669 DOI: 10.18240/ijo.2024.01.02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Accepted: 09/14/2023] [Indexed: 01/22/2024] Open
Abstract
AIM To investigate the impact of niosome nanoparticles carrying umbelliprenin (UMB), an anti-angiogenic and anti-inflammatory plant compound, on the expression of vascular endothelial growth factor (VEGF-A) and connective tissue growth factor (CTGF) genes in a human retinal pigment epithelium (RPE)-like retina-derived cell line. METHODS UMB-containing niosomes were created, optimized, and characterized. RPE-like cells were treated with free UMB and UMB-containing niosomes. The IC50 values of the treatments were determined using an MTT assay. Gene expression of VEGF-A and CTGF was evaluated using real-time polymerase chain reaction after RNA extraction and cDNA synthesis. Niosomes' characteristics, including drug entrapment efficiency, size, dispersion index, and zeta potential were assessed. Free UMB had an IC50 of 96.2 µg/mL, while UMB-containing niosomes had an IC50 of 25 µg/mL. RESULTS Treatment with UMB-containing niosomes and free UMB resulted in a significant reduction in VEGF-A expression compared to control cells (P=0.001). Additionally, UMB-containing niosomes demonstrated a significant reduction in CTGF expression compared to control cells (P=0.05). However, there was no significant reduction in the expression of both genes in cells treated with free UMB. CONCLUSION Both free UMB and niosome-encapsulated UMB inhibits VEGF-A and CTGF genes expression. However, the latter demonstrates significantly greater efficacy, potentially due to the lower UMB dosage and gradual delivery. These findings have implications for anti-angiogenesis therapeutic approaches targeting age-related macular degeneration.
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Affiliation(s)
- Farzad Dastaviz
- Stem Cell Research Center, Golestan University of Medical Sciences, Gorgan 4934174516, Iran
- Department of Medical Genetics, School of Advanced Technologies in Medicine, Golestan University of Medical Sciences, Gorgan 4934174516, Iran
| | - Akram Vahidi
- Department of Medical Genetics, School of Advanced Technologies in Medicine, Golestan University of Medical Sciences, Gorgan 4934174516, Iran
| | - Teymoor Khosravi
- Student Research Committee, Golestan University of Medical Sciences, Gorgan 4934174516, Iran
| | - Ayyoob Khosravi
- Stem Cell Research Center, Golestan University of Medical Sciences, Gorgan 4934174516, Iran
- Department of Molecular Medicine, Faculty of Advanced Medical Technologies, Golestan University of Medical Sciences, Gorgan 4934174516, Iran
| | - Mehdi Sheikh Arabi
- Department of Medical Nanotechnology, Faculty of Advanced Medical Technologies, Golestan University of Medical Sciences, Gorgan 4934174516, Iran
| | - Abouzar Bagheri
- Department of Clinical Biochemistry and Genetics, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari 4847191628, Iran
| | - Mohsen Rashidi
- Department Pharmacology, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari 4847191628, Iran
| | - Morteza Oladnabi
- Stem Cell Research Center, Golestan University of Medical Sciences, Gorgan 4934174516, Iran
- Department of Medical Genetics, School of Advanced Technologies in Medicine, Golestan University of Medical Sciences, Gorgan 4934174516, Iran
- Gorgan Congenital Malformations Research Center, Golestan University of Medical Sciences, Gorgan 4934174516, Iran
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Moghaddam SJK, Roushandeh AM, Roudkenar MH, Nemati S, Najafi-Ghalehlou N, Pakzad T, Hamidi M. Study of Three Potential Diagnostic Biomarkers in Nasopharyngeal Carcinoma Samples from Guilan, North of Iran. Int Arch Otorhinolaryngol 2023; 27:e461-e470. [PMID: 37564471 PMCID: PMC10411240 DOI: 10.1055/s-0042-1749371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 04/17/2022] [Indexed: 10/17/2022] Open
Abstract
Introduction Finding biomarkers for highly lethal cancers is a priority. Objective The current study was designed to understand the clinical significance of vascular endothelial growth factor (VEGF), latent membrane protein 1 (LMP1), and tumor necrosis factor-α (TNF-α) expression as the biomarkers, and evaluate their correlation with each other, in nasopharyngeal carcinoma (NPC) in the province of Guilan, North of Iran. Methods Gene expression was evaluated in 25 formalin-fixed paraffin-embedded (FFPE) blocks from cases of confirmed NPC and 20 FFPE samples of non-NPC by quantifying messenger ribonucleic acid (mRNA) and protein levels, using real-time polymerase chain reaction (PCR) and immunohistochemistry (IHC) methods, respectively. Furthermore, the correlations among the protein levels of different genes, along with the patients' demographic characteristics were assessed. Results Our findings on mRNA and protein levels demonstrated that the expression of the LMP1 gene in the NPC group was significantly elevated compared with that of the non-NPC group. In addition, the protein levels in the NPC group indicated a positive and significant correlation between LMP1 and VEGF expression. It was noted that both protein and mRNA levels showed no significant differences in the expression of TNF-α and VEGF genes between the NPC and control groups. Furthermore, there was no significant relationship between the expression of these proteins and the demographic characteristics of NPC patients. Conclusion Overall, a significant increase in LMP1 expression was observed in NPC patients, which may serve as a diagnostic biomarker for NPC. Also, LMP1 might be involved in NPC progression by inducing VEGF gene expression.
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Affiliation(s)
- Saghi Jani Kargar Moghaddam
- Department of Medical Biotechnology, Faculty of Paramedicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Amaneh Mohammadi Roushandeh
- Burn and Regenerative Medicine Research Center, Velayat Hospital, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Mehryar Habibi Roudkenar
- Burn and Regenerative Medicine Research Center, Velayat Hospital, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Shadman Nemati
- Otorhinolaryngology Research Center, Faculty of Medicine, Amiralmomenin Hospital, Guilan University of Medical Sciences, Rasht, Iran
| | - Nima Najafi-Ghalehlou
- Department of Laboratory Sciences, Faculty of Paramedicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Toofan Pakzad
- Department of Medical Biotechnology, Faculty of Paramedicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Masoud Hamidi
- Department of Medical Biotechnology, Faculty of Paramedicine, Guilan University of Medical Sciences, Rasht, Iran
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Canonica J, Foxton R, Garrido MG, Lin CM, Uhles S, Shanmugam S, Antonetti DA, Abcouwer SF, Westenskow PD. Delineating effects of angiopoietin-2 inhibition on vascular permeability and inflammation in models of retinal neovascularization and ischemia/reperfusion. Front Cell Neurosci 2023; 17:1192464. [PMID: 37377777 PMCID: PMC10291265 DOI: 10.3389/fncel.2023.1192464] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 05/26/2023] [Indexed: 06/29/2023] Open
Abstract
Introduction Clinical trials demonstrated that co-targeting angiopoietin-2 (Ang-2) and vascular endothelial growth factor (VEGF-A) with faricimab controls anatomic outcomes and maintains vision improvements, with strong durability, through 2 years in patients with neovascular age-related macular degeneration and diabetic macular edema. The mechanism(s) underlying these findings is incompletely understood and the specific role that Ang-2 inhibition plays requires further investigation. Methods We examined the effects of single and dual Ang-2/VEGF-A inhibition in diseased vasculatures of JR5558 mice with spontaneous choroidal neovascularization (CNV) and in mice with retinal ischemia/reperfusion (I/R) injuries. Results In JR5558 mice, Ang-2, VEGF-A, and dual Ang-2/VEGF-A inhibition reduced CNV area after 1 week; only dual Ang-2/VEGF-A inhibition decreased neovascular leakage. Only Ang-2 and dual Ang-2/VEGF-A inhibition maintained reductions after 5 weeks. Dual Ang-2/VEGF-A inhibition reduced macrophage/microglia accumulation around lesions after 1 week. Both Ang-2 and dual Ang-2/VEGF-A inhibition reduced macrophage/microglia accumulation around lesions after 5 weeks. In the retinal I/R injury model, dual Ang-2/VEGF-A inhibition was statistically significantly more effective than Ang-2 or VEGF-A inhibition alone in preventing retinal vascular leakage and neurodegeneration. Discussion These data highlight the role of Ang-2 in dual Ang-2/VEGF-A inhibition and indicate that dual inhibition has complementary anti-inflammatory and neuroprotective effects, suggesting a mechanism for the durability and efficacy of faricimab in clinical trials.
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Affiliation(s)
- Jérémie Canonica
- Roche Pharma Research and Early Development, Roche Innovation Center, Basel, Switzerland
| | - Richard Foxton
- Roche Pharma Research and Early Development, Roche Innovation Center, Basel, Switzerland
| | - Marina Garcia Garrido
- Roche Pharma Research and Early Development, Roche Innovation Center, Basel, Switzerland
| | - Cheng-Mao Lin
- Department of Ophthalmology and Visual Sciences, Kellogg Eye Center, University of Michigan Medicine, Ann Arbor, MI, United States
| | - Sabine Uhles
- Roche Pharma Research and Early Development, Roche Innovation Center, Basel, Switzerland
| | - Sumathi Shanmugam
- Department of Ophthalmology and Visual Sciences, Kellogg Eye Center, University of Michigan Medicine, Ann Arbor, MI, United States
| | - David A. Antonetti
- Department of Ophthalmology and Visual Sciences, Kellogg Eye Center, University of Michigan Medicine, Ann Arbor, MI, United States
| | - Steven F. Abcouwer
- Department of Ophthalmology and Visual Sciences, Kellogg Eye Center, University of Michigan Medicine, Ann Arbor, MI, United States
| | - Peter D. Westenskow
- Roche Pharma Research and Early Development, Roche Innovation Center, Basel, Switzerland
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Saetan N, Honsawek S, Tanavalee A, Ngarmukos S, Yuktanandana P, Poovorawan Y. Association between Common Variants in VEGFA Gene and the Susceptibility of Primary Knee Osteoarthritis. Cartilage 2022; 13:66-76. [PMID: 36314121 PMCID: PMC9924987 DOI: 10.1177/19476035221132260] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVES This study aimed to analyze the relationship between vascular endothelial growth factor A (VEGFA) gene polymorphisms, plasma VEGFA, and the susceptibility of knee osteoarthritis (OA). DESIGN A total of 404 subjects, 202 knee OA subjects and 202 healthy volunteers, were enrolled into the study. Four distinct polymorphisms of the VEGFA gene were evaluated using polymerase chain reaction-restriction fragment length polymorphism: -2578C/A (rs699947), -1154G/A (rs1570360), -634C/G (rs2010963), and +936C/T (rs3025039). Plasma VEGFA levels were analyzed using enzyme-linked immunosorbent assay. RESULTS The most common nucleotides in both knee OA subjects and healthy controls were CC for -2578C/A, GG for -1154G/A, CG for -634C/G, and CC for +936C/T in the VEGFA gene. Genotype distribution and allele frequencies of VEGFA -2578C/A, -1154G/A, -634C/G, and +936C/T single nucleotide polymorphisms did not differ between OA patients and the controls. Plasma VEGFA levels showed no difference between OA patients and the controls. In contrast, plasma VEGFA levels of -634C/C genotype were significantly higher in OA patients than in the controls (P = 0.035). According to the -2578A/A genotype, patients with early stage OA had a higher odds ratio than those with advanced stage OA (P = 0.023). CONCLUSIONS VEGFA -2578C/A (rs699947), -1154G/A (rs1570360), -634C/G (rs2010963), and +936C/T (rs3025039) polymorphisms may not be responsible for OA susceptibility in the Thai population. However, the OA patients with A/A genotype at the -2578C/A seemed to have a lower potential risk of developing severe OA than those with the C/A and C/C genotypes. These findings would help elucidate and facilitate a better understanding of the genetic fundamentals of OA.
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Affiliation(s)
- Natthaphon Saetan
- Biomedical Science Program, Faculty of
Graduate School, Chulalongkorn University, Bangkok, Thailand
| | - Sittisak Honsawek
- Department of Biochemistry, Center of
Excellence in Osteoarthritis and Musculoskeleton, Faculty of Medicine and King
Chulalongkorn Memorial Hospital, Thai Red Cross Society, Chulalongkorn University,
Bangkok, Thailand,Department of Orthopaedics, Vinai
Parkpian Orthopaedic Research Center, Faculty of Medicine, Chulalongkorn University
and King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok,
Thailand,Sittisak Honsawek, Department of
Biochemistry, Center of Excellence in Osteoarthritis and Musculoskeleton,
Faculty of Medicine and King Chulalongkorn Memorial Hospital, Thai Red Cross
Society, Chulalongkorn University, 1873 Rama IV Road, Patumwan, Bangkok 10330,
Thailand.
| | - Aree Tanavalee
- Department of Orthopaedics, Vinai
Parkpian Orthopaedic Research Center, Faculty of Medicine, Chulalongkorn University
and King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok,
Thailand
| | - Srihatach Ngarmukos
- Department of Orthopaedics, Vinai
Parkpian Orthopaedic Research Center, Faculty of Medicine, Chulalongkorn University
and King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok,
Thailand
| | - Pongsak Yuktanandana
- Department of Orthopaedics, Vinai
Parkpian Orthopaedic Research Center, Faculty of Medicine, Chulalongkorn University
and King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok,
Thailand
| | - Yong Poovorawan
- Center of Excellence in Clinical
Virology, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University
and King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok,
Thailand
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Sheng Q, Li G, Liu H, Liu P. Clinical evidence for elevated levels of caveolin-1 in circulation of patients with diabetic foot ulcers. Wound Repair Regen 2021; 30:107-116. [PMID: 34847261 DOI: 10.1111/wrr.12983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 08/23/2021] [Accepted: 10/05/2021] [Indexed: 12/01/2022]
Abstract
Caveolin-1 directly interacts vascular endothelial growth factor receptor-2 (VEGFR2) and therefore prevents VEGF-induced angiogenesis. In addition, the production of nitric oxide (NO), which is effective in reducing ischemia in diabetic foot ulcers (DFU), is suppressed by caveolin-1 in endothelial cells. The present study was designed to investigate the change of caveolin-1 concentrations in DFU patients. A total of 150 participants were consecutively enrolled, including 40 DFU patients (DFU group), 40 diabetes patients without DFU (type 2 diabetes mellitus [T2DM] group), and 70 participants without diabetes (control group). Significant increased levels of plasma caveolin-1, accompanied with decreased concentration of plasma VEGF-A (vascular endothelial growth factor-A) and NO, were detected in DFU patients. Moreover, Pearson's correlation analysis revealed a negative correlation between plasma caveolin-1 and VEGF-A as well as NO levels in DFU patients. Furthermore, DFU patients had higher expression of caveolin-1 in the popliteal artery, compared to those in control and T2DM groups. Simultaneously, the amounts of eNOS (an enzyme responsible for the production of NO) and VEGFR2 were attenuated in the popliteal artery of DFU patients. Taken together, our study provided clinical evidence for the possible association of elevated caveolin-1 levels and the development of DFU. This may be induced by the suppressed VEGF-A/VEGFR2 and eNOS/NO signalling axis.
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Affiliation(s)
- Qizhi Sheng
- Department of Orthopedics, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Guanglei Li
- Department of Orthopedics, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Huimin Liu
- Department of Paediatrics, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ping Liu
- Department of Orthopedics, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Miyata Y, Masato M, Mukae Y, Nakamura Y, Matsuda T, Harada J, Mitsunari K, Matsuo T, Ohba K, Sakai H. Pathological Roles of Prostaglandin E2-specific E-type Prostanoid Receptors in Hormone-sensitive and Castration-resistant Prostate Cancer. Anticancer Res 2021; 41:4333-4341. [PMID: 34475053 DOI: 10.21873/anticanres.15238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 08/03/2021] [Accepted: 08/04/2021] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM Prostaglandin (PG) E2 mediates malignant aggressiveness by binding to four specific E-type prostanoid receptors (EP1R - 4R). This study aimed to clarify the pathological significance of EPRs in hormone-sensitive prostate cancer (HSPC) and castration-resistant prostate cancer (CRPC). MATERIALS AND METHODS EP1R - 4R expression was examined in 102 HSPC and 27 CRPC specimens. The relationships between their expression and proliferation index (PI), apoptotic index (AI), and vascular endothelial growth factor (VEGF)-A expression were analyzed. RESULTS EP4R expression in CRPC was significantly higher compared to that in HSPC, even in advanced disease (T3/4, N1, and/or M1). EP4R expression was significantly correlated with PI, AI, and VEGF-A expression in CRPC. Such significant relationships were not detected between EP1R - 3R and CRPC. CONCLUSION EP4R expression in CRPC was significantly higher than that in HSPC and was associated with cancer cell proliferation, apoptosis, and pro-angiogenetic potential.
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Affiliation(s)
- Yasuyoshi Miyata
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Masahito Masato
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Yuta Mukae
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Yuichiro Nakamura
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Tsuyoshi Matsuda
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Junki Harada
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kensuke Mitsunari
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Tomohiro Matsuo
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kojiro Ohba
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Hideki Sakai
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
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Itashiki Y, Harada K, Takenawa T, Ferdous T, Ueyama Y, Mishima K. Antitumor effects of bevacizumab in combination with fluoropyrimidine drugs on human oral squamous cell carcinoma. Oncol Lett 2021; 22:730. [PMID: 34429770 PMCID: PMC8371954 DOI: 10.3892/ol.2021.12991] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Accepted: 01/05/2021] [Indexed: 01/13/2023] Open
Abstract
Vascular endothelial growth factor (VEGF) serves an important role in new blood vessel formation or angiogenesis, which is a critical event in tumor growth and metastasis. Bevacizumab is a humanized monoclonal antibody against VEGF-A, whereas S-1 is a fluoropyrimidine antineoplastic agent that induces apoptosis in various types of cancer cells. The present study evaluated the antitumor effects of bevacizumab in combination with 5-fluorouracil (5-FU) or S-1 against oral squamous cell carcinoma (OSCC) in vitro and in vivo. Two human OSCC cell lines were used, namely the high VEGF-A-expressing HSC-2 cells and the low VEGF-A-expressing SAS cells. MTT assay was used to evaluate the effect of bevacizumab and/or 5-FU against HSC-2 and SAS cell proliferation. Additionally, the antitumor effect of bevacizumab was evaluated alone and in combination with S-1 against HSC-2 tumors in nude mice. S-1 (6.9 mg/kg/day) was administered orally every day for 3 weeks, and bevacizumab (5 ml/kg/day) was injected intraperitoneally twice per week for 3 weeks. Apoptotic cells in mouse tumors were detected using the TUNEL method, and cell proliferation and microvessel density (MVD) were determined by immunohistochemical staining of Ki-67 and CD31, respectively. Bevacizumab alone did not inhibit OSCC cell proliferation in vitro, and did not exhibit any synergistic inhibitory effect in combination with 5-FU in vitro. However, combined bevacizumab and S-1 therapy exerted synergistic and significant antitumor effects in vivo on HSC-2 tumor xenografts, and induced apoptosis in tumor cells. Furthermore, this combination therapy led to decreased MVD and cell proliferative abilities, as well as increased apoptosis in residual tumors. The present findings suggested that the bevacizumab plus S-1 combination therapy may exert antitumor effects in high VEGF-A-expressing OSCC cells.
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Affiliation(s)
- Yasutaka Itashiki
- Department of Oral and Maxillofacial Surgery, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi 755-8505, Japan.,Department of Dentistry and Oral Surgery, National Hospital Organization Kanmon Medical Center, Shimonoseki, Yamaguchi 752-8510, Japan
| | - Koji Harada
- Department of Oral and Maxillofacial Surgery, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi 755-8505, Japan
| | - Takanori Takenawa
- Department of Oral and Maxillofacial Surgery, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi 755-8505, Japan
| | - Tarannum Ferdous
- Department of Oral and Maxillofacial Surgery, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi 755-8505, Japan
| | - Yoshiya Ueyama
- Department of Oral and Maxillofacial Surgery, Yamaguchi University, Ube, Yamaguchi 755-8505, Japan
| | - Katsuaki Mishima
- Department of Oral and Maxillofacial Surgery, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi 755-8505, Japan
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Yücel Ç, Sertoğlu E, Fırat Oğuz E, Hayran Y, Omma A, Özgürtaş T. Serum VEGF-A and VEGFR-1 levels in patients with adult immunoglobulin A vasculitis. Int J Rheum Dis 2021; 24:789-794. [PMID: 33890417 DOI: 10.1111/1756-185x.14115] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 03/11/2021] [Accepted: 03/25/2021] [Indexed: 01/16/2023]
Abstract
AIM Immunoglobulin A vasculitis (IgAV) is classified as a leukocytoclastic vasculitis characterized by immune deposits in endothelial walls of small vessels causing vascular endothelial injury. The aim of the present study is to evaluate levels of vascular endothelial growth factor-A (VEGF-A) and VEGF receptor-1 (VEGFR-1) levels in adult IgAV patients. METHOD Thirty-seven adult IgAV patients admitted to the Rheumatology Clinic meeting the IgAV American College of Rheumatology (ACR) criteria and 32 control subjects were enrolled in the study. Disease activity was categorized as "remission" or "active" according to Birmingham Vasculitis Activity Score (BVAS). Serum VEGF-A, VEGFR-1 levels and VEGFR-1/VEGF-A ratio were evaluated in patient and control groups. RESULTS Serum median VEGF-A, VEGFR-1 and VEGFR-1/VEGF-A ratios were significantly higher in the patient group when compared to controls (235.9 [155-308.4] pg/mL vs. 78.8 [29.7-210.3] pg/mL, 400 [277.2-724.3] pg/mL vs. 31.5 [12.5-214.4] pg/mL and 1.85 [0.57-2.97] vs. 0.46 [0.38-0.63] respectively, all P values <.001). VEGFR-1 had the strongest predictive value with a cut-off value of 0.6 with 75% sensitivity and 73% specificity (P < .001). CONCLUSION This study is the first report indicating elevated serum VEGF-A, VEGFR-1, and more importantly VEGFR-1/VEGF-A ratio can be good representatives of the inflammatory processes together with vascular endothelial injury in adult IgAV patients. VEGFR-1 seems to be a more important indicator of the ongoing inflammation.
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Affiliation(s)
- Çiğdem Yücel
- Department of Clinical Biochemistry, Gülhane Training and Research Hospital, University of Health Sciences, Ankara, Turkey
| | - Erdim Sertoğlu
- Department of Clinical Biochemistry, Gülhane Training and Research Hospital, University of Health Sciences, Ankara, Turkey
| | - Esra Fırat Oğuz
- Department of Clinical Biochemistry, Ankara City Hospital, Ankara, Turkey
| | - Yıldız Hayran
- Department of Dermatology, Ankara City Hospital, Ankara, Turkey
| | - Ahmet Omma
- Department of Rheumatology, Ankara City Hospital, Ankara, Turkey
| | - Taner Özgürtaş
- Department of Clinical Biochemistry, Gülhane Training and Research Hospital, University of Health Sciences, Ankara, Turkey
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10
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Vizio B, Bosco O, David E, Caviglia GP, Abate ML, Schiavello M, Pucci A, Smedile A, Paraluppi G, Romagnoli R, Lupia E, Bellone G, Montrucchio G. Cooperative Role of Thrombopoietin and Vascular Endothelial Growth Factor-A in the Progression of Liver Cirrhosis to Hepatocellular Carcinoma. Int J Mol Sci 2021; 22:1818. [PMID: 33673041 DOI: 10.3390/ijms22041818] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 02/08/2021] [Accepted: 02/09/2021] [Indexed: 12/11/2022] Open
Abstract
Primary thrombopoietic mediator thrombopoietin (THPO) is mainly produced by the liver; it may act as a growth factor for hepatic progenitors. Principal angiogenesis inducer vascular endothelial growth factor-A (VEGF-A) is critical for the complex vascular network within the liver architecture. As a cross-regulatory loop between THPO and VEGF-A has been demonstrated in the hematopoietic system, the two growth factors were hypothesized to cooperatively contribute to the progression from liver cirrhosis (LC) to hepatocellular carcinoma (HCC). The mRNA and protein expression levels of THPO, VEGF-A, and their receptors were examined, compared, and correlated in paired cancerous and LC tissues from 26 cirrhosis-related HCC patients, using qRT-PCR and immunohistochemistry. THPO and VEGF-A were alternatively silenced by small interfering RNA (siRNA) in human liver cancer cell lines Huh7 and HepG2. THPO and VEGF-A expressions significantly increased in tumor versus LC tissues. HCC and paired LC cells expressed similar levels of THPO receptor (R), whereas vascular endothelial growth factor receptor (VEGFR) -1 and VEGFR-2 levels were higher in HCC than in corresponding LC tissue samples. A significant linear correlation emerged between THPO and VEGF-A transcripts in HCC and, at the protein level, THPO and THPOR were significantly correlated with VEGF-A in tumor tissues. Both HCC and LC expressed similar levels of gene and protein hypoxia inducible factor (HIF)-1α. Positive cross-regulation occurred with the alternative administration of siRNAs targeting THPO and those targeting VEGF-A in hypoxic liver cancer cell lines. These results suggest THPO and VEGF-A might act as interdependently regulated autocrine and/or paracrine systems for cellular growth in HCC. This might be clinically interesting, since new classes of THPOR agonistic/antagonistic drugs may provide novel therapeutic options to correct the frequent hemostatic abnormality seen in HCC patients.
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11
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Kikuchi R, Tsuboi N, Sada KE, Nakatochi M, Yokoe Y, Suzuki A, Maruyama S, Murohara T, Matsushita T, Amano K, Atsumi T, Takasaki Y, Ito S, Hasegawa H, Dobashi H, Ito T, Makino H, Matsuo S. Vascular endothelial growth factor (VEGF)-A and VEGF-A 165b are associated with time to remission of granulomatosis with polyangiitis in a nationwide Japanese prospective cohort study. Ann Clin Biochem 2020; 58:86-94. [PMID: 33081494 DOI: 10.1177/0004563220968371] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND Effective prognostic markers are needed for antineutrophil cytoplasmic antibody-associated vasculitis (AAV). This study evaluated the clinical associations of serum vascular endothelial growth factor-A (sVEGF-A) and sVEGF-A165b (an antiangiogenic isoform of VEGF-A) concentrations with time to remission of AAV in a nationwide Japanese prospective follow-up cohort. METHODS We collected samples from patients with AAV who were enrolled in the nationwide Japanese cohort study (RemIT-JAV-RPGN). We measured sVEGF-A and sVEGF-A165b concentrations using enzyme-linked immunosorbent assays in 57 serum samples collected 6 months before and after initiation of AAV treatment. Patients were classified based on AAV disease subtypes: microscopic polyangiitis, granulomatosis with polyangiitis and eosinophilic granulomatosis with polyangiitis (EGPA). RESULTS Results revealed significant reductions in sVEGF-A and sVEGF-A165b concentrations in patients with microscopic polyangiitis and EGPA, respectively. However, despite the comparable concentrations of sVEGF-A and sVEGF-A165b during the 6 months of treatment in granulomatosis with polyangiitis patients, correlation analysis revealed that the differences in log2-transformed concentrations of sVEGF-A and sVEGF-A165b were inversely correlated with time to remission in granulomatosis with polyangiitis patients. CONCLUSION These results suggest that sVEGF-A and -A165b can serve as potential markers of time to remission in patients with granulomatosis with polyangiitis.
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Affiliation(s)
- Ryosuke Kikuchi
- Department of Medical Technique, Nagoya University Hospital, Nagoya, Japan
| | - Naotake Tsuboi
- Department of Nephrology, School of Medicine, Fujita Health University, Nagoya, Japan
| | - Ken-Ei Sada
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan.,Department of Clinical Epidemiology, Kochi Medical School, Kochi University, Nankoku, Japan
| | - Masahiro Nakatochi
- Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yuki Yokoe
- Department of Nephrology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Atsuo Suzuki
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Shoichi Maruyama
- Department of Nephrology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Toyoaki Murohara
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Tadashi Matsushita
- Department of Clinical Laboratory, Nagoya University Hospital, Nagoya, Japan.,Department of Transfusion Medicine, Nagoya University Hospital, Nagoya, Japan
| | | | - Koichi Amano
- Department of Rheumatology and Clinical Immunology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Tatsuya Atsumi
- Rheumatology, Endocrinology and Nephrology, Faculty of Medicine, Hokkaido University, Hokkaido, Japan
| | - Yoshinari Takasaki
- Department of Internal Medicine and Rheumatology, Juntendo University School of Medicine, Tokyo, Japan
| | - Satoshi Ito
- Department of Rheumatology, Niigata Rheumatic Center, Niigata, Japan
| | - Hitoshi Hasegawa
- Department of Hematology, Clinical Immunology, and Infectious Diseases, Ehime University Graduate School of Medicine, Ehime, Japan
| | - Hiroaki Dobashi
- Division of Hematology, Rheumatology and Respiratory Medicine, Department of Internal Medicine, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Takafumi Ito
- Division of Nephrology, Shimane University, Faculty of Medicine, Shimane, Japan
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12
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Yan Y, Yan Q, Qian L, Jiang Y, Chen X, Zeng S, Xu Z, Gong Z. S-adenosylmethionine administration inhibits levodopa-induced vascular endothelial growth factor-A expression. Aging (Albany NY) 2020; 12:21290-21307. [PMID: 33170152 PMCID: PMC7695432 DOI: 10.18632/aging.103863] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 07/17/2020] [Indexed: 02/06/2023]
Abstract
Background: Studies have demonstrated that S-adenosylmethionine could effectively affect the clinical wearing-off phenomena of levodopa, an antiparkinsonian agent; however, the detailed mechanisms for this effect need to be further clarified. Results: S-adenosylmethionine and levodopa had opposite effects on the protein stability of vascular endothelial growth factor-A. The analysis of tube formation and cell viability also showed the nonconforming functions of S-adenosylmethionine and levodopa on cell angiogenesis and proliferation. Meanwhile, S-adenosylmethionine could significantly abolish the increased angiogenesis and cell viability induced by levodopa. S-adenosylmethionine resulted in G1/S phase arrest, with decreased cyclin dependent kinase 4/6 and increased p16, a specific cyclin dependent kinase inhibitor. Mechanically, the different effects of levodopa and S-adenosylmethionine were dependent on the phosphorylation and activation of extracellular signal-regulated kinase. S-adenosylmethionine could be fitted into the predicted docking pocket in the crystal structure of vascular endothelial growth factor-A, enhancing its acetylation level and reducing half-life. Conclusions: These observations suggested that methyl donor S-adenosylmethionine could act as a potential agent against vascular endothelial growth factor-A-related diseases induced by levodopa treatment. Methods: We performed in vitro cytological analyses to assess whether S-adenosylmethionine intake could influence levodopa-induced vascular endothelial growth factor-A expression in human umbilical vein endothelial cells.
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Affiliation(s)
- Yuanliang Yan
- Department of Pharmacy, Xiangya Hospital, Central South University, Hunan, China.,Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Hunan, China
| | - Qijia Yan
- Department of Pathology, Xiangya Hospital, Central South University, Hunan, China
| | - Long Qian
- Department of Pharmacy, Xiangya Hospital, Central South University, Hunan, China.,Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Hunan, China
| | - Yueping Jiang
- Department of Pharmacy, Xiangya Hospital, Central South University, Hunan, China
| | - Xi Chen
- Department of Pharmacy, Xiangya Hospital, Central South University, Hunan, China.,Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Hunan, China
| | - Shuangshuang Zeng
- Department of Pharmacy, Xiangya Hospital, Central South University, Hunan, China.,Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Hunan, China
| | - Zhijie Xu
- Department of Pathology, Xiangya Hospital, Central South University, Hunan, China
| | - Zhicheng Gong
- Department of Pharmacy, Xiangya Hospital, Central South University, Hunan, China.,Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Hunan, China
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13
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Luengas-Martinez A, Hardman-Smart J, Paus R, Young HS. Vascular endothelial growth factor-A as a promising therapeutic target for the management of psoriasis. Exp Dermatol 2020; 29:687-698. [PMID: 32654325 DOI: 10.1111/exd.14151] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 06/22/2020] [Accepted: 06/30/2020] [Indexed: 12/15/2022]
Abstract
Vascular endothelial growth factor-A (VEGF-A), the main angiogenic mediator, plays a critical role in the pathogenesis of several inflammatory immune-mediated diseases, including psoriasis. Even though anti-angiogenic therapies, such as VEGF inhibitors, are licensed for the treatment of various cancers and eye disease, VEGF-targeting interventions are not part of current psoriasis therapy. In this viewpoint essay, we argue that the existing preclinical research evidence on the role of VEGF-A in the pathogenesis of psoriasis as well as clinical observations in patients who have experienced psoriasis remission during oncological anti-VEGF-A therapy strongly suggests to systematically explore angiogenesis targeting also in the management of psoriasis. We also point out that some psoriasis therapies decrease circulating levels of VEGF-A and normalise the psoriasis-associated vascular pathology in the papillary dermis of plaques of psoriasis and that a subset of patients with constitutionally high levels of VEGF-A may benefit most from the anti-angiogenic therapy we advocate here. Given that novel, well-targeted personalised medicine therapies for the development of psoriasis need to be developed, we explore the hypothesis that VEGF-A and signalling through its receptors constitute a promising target for therapeutic intervention in the future management of psoriasis.
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Affiliation(s)
- Andrea Luengas-Martinez
- Centre for Dermatology Research and Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
| | | | - Ralf Paus
- Centre for Dermatology Research and Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK.,Dr. Philip Frost Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL, USA.,Monasterium Laboratory, Muenster, Germany
| | - Helen S Young
- Centre for Dermatology Research and Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
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14
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Hawke LG, Whitford MKM, Ormiston ML. The Production of Pro-angiogenic VEGF-A Isoforms by Hypoxic Human NK Cells Is Independent of Their TGF-β-Mediated Conversion to an ILC1-Like Phenotype. Front Immunol 2020; 11:1903. [PMID: 32983113 PMCID: PMC7477355 DOI: 10.3389/fimmu.2020.01903] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 07/15/2020] [Indexed: 11/13/2022] Open
Abstract
Circulating natural killer (NK) cells have been shown to adopt a type 1 innate lymphoid cell (ILC1)-like phenotype in response to TGF-β and secrete VEGF-A when exposed to hypoxia. Although these changes are often considered to be linked attributes of tissue residency, it has yet to be determined if TGF-β and hypoxia work in concert to coordinate NK cellular phenotype and angiogenic potential. Examination of human circulating NK cells treated with TGF-β demonstrated heterogeneity in their potential to adopt an ILC1-like phenotype, as indicated by the upregulation of CD9 and CD103 on only a subset of cells in culture. Culturing NK cells in chronic hypoxia did not induce a similar ILC1-like conversion and did not enhance the degree of conversion for cells exposed to TGF-β. Similarly, hypoxic culture of circulating NK cells induced VEGF-A secretion, but this production was not enhanced by TGF-β. Fluorescent in-situ hybridization flow cytometry demonstrated that hypoxia-induced VEGF-A production was uniform across all NK cells in culture and was not a selective feature of the cellular subset that adopted an ILC1-like phenotype in response to TGF-β. Examination of VEGF-A isoforms demonstrated that hypoxia induces the production of pro-angiogenic VEGF-A isoforms, including VEGF-A165 and VEGF-A121, and does not stimulate any meaningful production of anti-angiogenic isoforms, such as VEGF-Ab transcriptional variants or VEGF-Ax. In summary, TGF-β-mediated ILC1-like conversion and hypoxia-induced VEGF-A production are discrete processes in NK cells and are not part of a linked cellular program associated with tissue residency.
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Affiliation(s)
- Lindsey G Hawke
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON, Canada
| | - Mara K M Whitford
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON, Canada
| | - Mark L Ormiston
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON, Canada.,Department of Medicine, Queen's University, Kingston, ON, Canada
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15
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Mukae Y, Miyata Y, Nakamura Y, Araki K, Otsubo A, Yuno T, Mitsunari K, Matsuo T, Ohba K, Sakai H. Pathological roles of c-Met in bladder cancer: Association with cyclooxygenase-2, heme oxygenase-1, vascular endothelial growth factor-A and programmed death ligand 1. Oncol Lett 2020; 20:135-144. [PMID: 32565941 PMCID: PMC7285828 DOI: 10.3892/ol.2020.11540] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 02/18/2020] [Indexed: 02/02/2023] Open
Abstract
c-Met is a receptor tyrosine kinase that binds a specific ligand, namely hepatocyte growth factor (HGF). The HGF/c-Met system is important for malignant aggressiveness in various types of cancer, including bladder cancer (BC). However, although phosphorylation is the essential step required for biological activation of c-Met, pathological roles of phosphorylated c-Met at the clinical and molecular levels in patients with BC are not fully understood. In the present study, the expression levels of c-Met and the phosphorylation of two of its tyrosine residues (pY1234/pY1235 and pY1349) were immunohistochemically examined in 185 BC tissues. The associations between these expression levels and cancer cell invasion, metastasis, and cyclooxygenase-2 (COX-2), heme oxygenase-1 (HO-1), VEGF-A and programmed death ligand 1 (PD-L1) levels were investigated. c-Met was associated with muscle invasion (P=0.021), as well as the expression levels of HO-1 (P=0.028) and PD-L1 (P<0.001), whereas pY1349 c-Met was associated with muscle invasion (P=0.003), metastasis (P=0.025), and COX-2 (P=0.017), HO-1 (P=0.031) and PD-L1 (P=0.001) expression. By contrast, pY1234/1235 c-Met was associated with muscle invasion and metastasis (P=0.006 and P=0.012, respectively), but not with the panel of cancer-associated molecules. Furthermore, COX-2 and PD-L1 expression were associated with muscle invasion and metastasis, respectively (P=0.045 and P=0.036, respectively). Hence, c-Met serves important roles in muscle invasion by regulating HO-1 and PD-L1, whereas its phosphorylation at Y1349 is associated with muscle invasion and metastasis via the regulation of COX-2, HO-1 and PD-L1 in patients with BC. Furthermore, phosphorylation at Y1234/1235 may lead to muscle invasion and metastasis via alternate mechanisms associated with c-Met and pY1349 c-Met.
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Affiliation(s)
- Yuta Mukae
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8501, Japan
| | - Yasuyoshi Miyata
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8501, Japan
| | - Yuichiro Nakamura
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8501, Japan
| | - Kyohei Araki
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8501, Japan
| | - Asato Otsubo
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8501, Japan
| | - Tsutomu Yuno
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8501, Japan
| | - Kensuke Mitsunari
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8501, Japan
| | - Tomohiro Matsuo
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8501, Japan
| | - Kojiro Ohba
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8501, Japan
| | - Hideki Sakai
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8501, Japan
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16
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Saboory E, Gholizadeh-Ghaleh Aziz S, Samadi M, Biabanghard A, Chodari L. Exercise and insulin-like growth factor 1 supplementation improve angiogenesis and angiogenic cytokines in a rat model of diabetes-induced neuropathy. Exp Physiol 2020; 105:783-792. [PMID: 32053260 DOI: 10.1113/ep088069] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 02/11/2020] [Indexed: 12/15/2022]
Abstract
NEW FINDINGS What is the central question of this study? Do changes in levels of angiogenesis-related mediators [vascular endothelial growth factor-A (VEGF-A), thrombospondin-1 (TSP-1) and nuclear factor-κB (NF-κB)] in the sciatic nerve mediate diabetic neuropathy in the streptozotocin-induced type 1 diabetic male rat? Can exercise and insulin-like growth factor 1 (IGF-I) treatment improve the diabetes-related decrease in angiogenesis in sciatic nerve in these animals? What is the main finding and its importance? Levels of VEGF-A, TSP-1 and NF-κB change in the sciatic nerve of diabetic rats and might mediate diabetic neuropathy. Treatment with IGF-I and exercise could increase angiogenesis in the diabetic rats by increasing VEGF-A and decreasing TSP-1 and NF-κB expression in the sciatic nerve. ABSTRACT Diabetic neuropathy is a severe complication of diabetes that affects 40-50% of diabetic people in the world. The aim of this study was to characterize alterations in angiogenesis and related molecular mediators in the sciatic nerve in diabetic conditions alone or in diabetes in combination with exercise and/or administration of insulin-like growth factor 1 (IGF-I). Forty male Wistar rats were assigned into one of five groups, namely control, diabetes, diabetes + exercise, diabetes + IGF-I and diabetes + exercise + IGF-I. Type 1 diabetes was induced by i.p. injection of streptozotocin (60 mg kg-1 ). After 30 days of treatment with exercise or IGF-I alone or in combination, diabetic neuropathy was evaluated with a hotplate, glycated haemoglobin was measured, angiogenesis was determined by immunostaining for PECAM-1/CD31, and expressions of vascular endothelial growth factor-A (VEGF-A), thrombospondin-1 (TSP-1) and nuclear factor-κB (NF-κB) were determined by enzyme-linked immunosorbent assay.After 4 weeks, the diabetes group showed a significant decrease in capillary density and VEGF-A levels, but a significant increase in glycated haemoglobin in blood, TSP-1 and NF-κB levels in the sciatic nerve compared with the control group, and these effects were ameliorated by exercise and IGF-I. However, simultaneous treatment of diabetic rats with IGF-I and exercise did not have any synergistic effects. These findings indicate that diabetes-induced neuropathy may be associated, in part, with decreased angiogenesis mediated by overproduction of TSP-1 and NF-κB, in addition to reduced production of VEGF-A. The findings also showed that exercise and IGF-I can reduce neuropathy, followed by increased angiogenesis, by changes in TSP-1, NF-κB and VEGF-A production levels.
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Affiliation(s)
- Ehsan Saboory
- Zanjan Metabolic Diseases Research Center, Zanjan University of Medical Sciences, Urmia, Zanjan, Iran
| | | | - Mahrokh Samadi
- Department of Physiology, Faculty of Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | - Abdolrahman Biabanghard
- Department of Physiology, Faculty of Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | - Leila Chodari
- Department of Physiology, Faculty of Medicine, Urmia University of Medical Sciences, Urmia, Iran.,Neurophysiology Research Center, Cellular and Molecular Medicine Institute, Urmia University of Medical Sciences, Urmia, Iran
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17
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Chen MX, Liu YM, Li Y, Yang X, Wei WB. Elevated VEGF-A & PLGF concentration in aqueous humor of patients with uveal melanoma following Iodine-125 plaque radiotherapy. Int J Ophthalmol 2020; 13:599-605. [PMID: 32399411 DOI: 10.18240/ijo.2020.04.11] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Accepted: 03/12/2020] [Indexed: 12/12/2022] Open
Abstract
AIM To measure the concentration of vascular endothelial growth factor-A (VEGF-A), and placental growth factor (PLGF) in aqueous humor of uveal melanoma patients before and after Iodine-125 plaque therapy (IPT), determine the postoperative fluctuation and evaluate associated factors in vivo. METHODS Participants were 18 Chinese patients with uveal melanoma who were elected to IPT. Undiluted aqueous humor samples were collected at Iodine plaque implant and removal time, then stored immediately at -80°C until assayed. The concentration of VEGF-A, PLGF and other 7 cytokines comprising interleukin-2 (IL-2), IL-8, IL-10, interferon (IFN)-γ, programmed death (PD)-1, transforming growth factor (TGF)-β1 and insulin-like growth factor (IGF)-1 in aqueous humor was measured using Raybiotech immunoassay kit, a high throughput strategy. The VEGF-A and PLGF levels were compared across preoperation and postoperation subgroups, as well as those of other 7 interleukins. Correlation and grouped analyses were conducted to determine the independent effects of clinical parameters and other cytokines on VEGF-A and PLGF concentration or fluctuation. This study set a self-control design. RESULTS VEGF-A (P=0.038) and PLGF (P=0.026) were the only two increased cytokines after IPT. Preoperative and postoperative level of VEGF-A and PLGF (r=0.575, P=0.013; r=0.987, P<0.001) correlated with each other significantly. Level of VEGF-A (r=0.626, P=0.005; r=0.588, P=0.01) and PLGF (r=0.616, P=0.007; r=0.588, P=0.01) had positive correlation with tumor thickness consistently. Elevated VEGF-A or PLGF level were strong predictive factors of each other (P=0.007, OR=60.0). The elevated VEGF-A group showed a higher postoperative level of IFN-γ (P=0.005), IL-2 (P<0.001) and IL-10 (P=0.004) in aqueous humor. When the elevated PLGF group got similar results that a higher postoperative level of IFN-γ (P=0.007), IL-2 (P<0.001) and IL-10 (P=0.013) in aqueous humor. CONCLUSION This study reveals that VEGF-A and PLGF in aqueous humor significantly increased with tumor thickness and radiation process in uveal melanoma patients. VEGF-A and PLGF may be crucial in uveal melanoma genesis and radiotherapy reactions. Immune mediators comprised IFN-γ, IL-2 and IL-10 could play roles in the link between inflammation and angiogenesis in uveal melanoma when exposed to radiotherapy.
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Affiliation(s)
- Meng-Xi Chen
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Beijing Key Laboratory of Intraocular tumor Diagnosis and Treatment, Beijing 100730, China
| | - Yue-Ming Liu
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Beijing Key Laboratory of Intraocular tumor Diagnosis and Treatment, Beijing 100730, China
| | - Yang Li
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Beijing Key Laboratory of Intraocular tumor Diagnosis and Treatment, Beijing 100730, China
| | - Xuan Yang
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Beijing Key Laboratory of Intraocular tumor Diagnosis and Treatment, Beijing 100730, China
| | - Wen-Bin Wei
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Beijing Key Laboratory of Intraocular tumor Diagnosis and Treatment, Beijing 100730, China
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18
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Sun P, Zhang K, Hassan SH, Zhang X, Tang X, Pu H, Stetler RA, Chen J, Yin KJ. Endothelium-Targeted Deletion of microRNA-15a/16-1 Promotes Poststroke Angiogenesis and Improves Long-Term Neurological Recovery. Circ Res 2020; 126:1040-1057. [PMID: 32131693 DOI: 10.1161/circresaha.119.315886] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
RATIONALE Angiogenesis promotes neurological recovery after stroke and is associated with longer survival of stroke patients. Cerebral angiogenesis is tightly controlled by certain microRNAs (miRs), such as the miR-15a/16-1 cluster, among others. However, the function of the miR-15a/16-1 cluster in endothelium on postischemic cerebral angiogenesis is not known. OBJECTIVE To investigate the functional significance and molecular mechanism of endothelial miR-15a/16-1 cluster on angiogenesis in the ischemic brain. METHODS AND RESULTS Endothelial cell-selective miR-15a/16-1 conditional knockout (EC-miR-15a/16-1 cKO) mice and wild-type littermate controls were subjected to 1 hour middle cerebral artery occlusion followed by 28-day reperfusion. Deletion of miR-15a/16-1 cluster in endothelium attenuates post-stroke brain infarction and atrophy and improves the long-term sensorimotor and cognitive recovery against ischemic stroke. Endothelium-targeted deletion of the miR-15a/16-1 cluster also enhances post-stroke angiogenesis by promoting vascular remodeling and stimulating the generation of newly formed functional vessels, and increases the ipsilateral cerebral blood flow. Endothelial cell-selective deletion of the miR-15a/16-1 cluster up-regulated the protein expression of pro-angiogenic factors VEGFA (vascular endothelial growth factor), FGF2 (fibroblast growth factor 2), and their receptors VEGFR2 (vascular endothelial growth factor receptor 2) and FGFR1 (fibroblast growth factor receptor 1) after ischemic stroke. Consistently, lentiviral knockdown of the miR-15a/16-1 cluster in primary mouse or human brain microvascular endothelial cell cultures enhanced in vitro angiogenesis and up-regulated pro-angiogenic proteins expression after oxygen-glucose deprivation, whereas lentiviral overexpression of the miR-15a/16-1 cluster suppressed in vitro angiogenesis and down-regulated pro-angiogenic proteins expression. Mechanistically, miR-15a/16-1 translationally represses pro-angiogenic factors VEGFA, FGF2, and their receptors VEGFR2 and FGFR1, respectively, by directly binding to the complementary sequences within 3'-untranslated regions of those messenger RNAs. CONCLUSIONS Endothelial miR-15a/16-1 cluster is a negative regulator for postischemic cerebral angiogenesis and long-term neurological recovery. Inhibition of miR-15a/16-1 function in cerebrovascular endothelium may be a legitimate therapeutic approach for stroke recovery.
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Affiliation(s)
- Ping Sun
- From the Department of Neurology, Pittsburgh Institute of Brain Disorders and Recovery, University of Pittsburgh School of Medicine, PA (P.S., K.Z., S.H.H., X.Z., X.T., H.P., R.A.S., J.C., K.-J.Y.)
| | - Kai Zhang
- From the Department of Neurology, Pittsburgh Institute of Brain Disorders and Recovery, University of Pittsburgh School of Medicine, PA (P.S., K.Z., S.H.H., X.Z., X.T., H.P., R.A.S., J.C., K.-J.Y.)
| | - Sulaiman H Hassan
- From the Department of Neurology, Pittsburgh Institute of Brain Disorders and Recovery, University of Pittsburgh School of Medicine, PA (P.S., K.Z., S.H.H., X.Z., X.T., H.P., R.A.S., J.C., K.-J.Y.)
| | - Xuejing Zhang
- From the Department of Neurology, Pittsburgh Institute of Brain Disorders and Recovery, University of Pittsburgh School of Medicine, PA (P.S., K.Z., S.H.H., X.Z., X.T., H.P., R.A.S., J.C., K.-J.Y.)
| | - Xuelian Tang
- From the Department of Neurology, Pittsburgh Institute of Brain Disorders and Recovery, University of Pittsburgh School of Medicine, PA (P.S., K.Z., S.H.H., X.Z., X.T., H.P., R.A.S., J.C., K.-J.Y.)
| | - Hongjian Pu
- From the Department of Neurology, Pittsburgh Institute of Brain Disorders and Recovery, University of Pittsburgh School of Medicine, PA (P.S., K.Z., S.H.H., X.Z., X.T., H.P., R.A.S., J.C., K.-J.Y.)
| | - R Anne Stetler
- From the Department of Neurology, Pittsburgh Institute of Brain Disorders and Recovery, University of Pittsburgh School of Medicine, PA (P.S., K.Z., S.H.H., X.Z., X.T., H.P., R.A.S., J.C., K.-J.Y.)
| | - Jun Chen
- From the Department of Neurology, Pittsburgh Institute of Brain Disorders and Recovery, University of Pittsburgh School of Medicine, PA (P.S., K.Z., S.H.H., X.Z., X.T., H.P., R.A.S., J.C., K.-J.Y.).,Geriatric Research, Education and Clinical Center, Veterans Affairs Pittsburgh Healthcare System, PA (J.C., K.-J.Y.)
| | - Ke-Jie Yin
- From the Department of Neurology, Pittsburgh Institute of Brain Disorders and Recovery, University of Pittsburgh School of Medicine, PA (P.S., K.Z., S.H.H., X.Z., X.T., H.P., R.A.S., J.C., K.-J.Y.).,Geriatric Research, Education and Clinical Center, Veterans Affairs Pittsburgh Healthcare System, PA (J.C., K.-J.Y.)
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19
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Ha X, Wang J, Chen K, Deng Y, Zhang X, Feng J, Li X, Zhu J, Ma Y, Qiu T, Wang C, Xie J, Zhang J. Free Fatty Acids Promote the Development of Prostate Cancer by Upregulating Peroxisome Proliferator-Activated Receptor Gamma. Cancer Manag Res 2020; 12:1355-1369. [PMID: 32158268 PMCID: PMC7048952 DOI: 10.2147/cmar.s236301] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 01/31/2020] [Indexed: 12/11/2022] Open
Abstract
Introduction As one of the most common forms of cancer that threatens men's health, prostate cancer (PCa) is under a trend of increasing morbidity and mortality in most countries. More and more studies have pointed out that obesity is closely linked to the occurrence and development of PCa, although there are still many undiscovered molecular mechanisms between the two. Methods In the present study, we compare serum lipid levels in patients with PCa and normal individuals. PCa cells (PC3 and 22RV1) were cultured in vitro, the TC/TG/HDL/GLU assay kit was used to detect the glucose and lipid metabolism level of PCa cells, the flow cytometry technique was used to detect the proliferation ability of PCa cells, and the Transwell was used to detect the invasion and migration ability of PCa cells. Western blot/quantitative real-time PCR was used to detect peroxisome proliferator-activated receptor γ (PPARγ) and vimentin/vascular endothelial growth factor-A (VEGF-A) expression levels, and immunohistochemistry was used to observe tumor-associated gene expression levels in nude mice. All data were analysed using the Independent samples t-test or rank sum test. Results We found higher levels of FFA in the serum of patients with PCa. In vitro experiments have demonstrated that high levels of FFA can promote the proliferation, migration and invasion of two PCa cells (PC3 and 22RV1) and affect the energy metabolism of PCa cells. The upregulated PPARγ plays a key role in this process, and vimentin may be involved in this signaling pathway. Conclusion We infer that high levels of FFA may promote PCa development by upregulating PPARγ expression.
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Affiliation(s)
- Xiaodan Ha
- Shihezi University School of Medicine, Bei-Er-Lu, Shihezi, Xinjiang 832000, People's Republic of China
| | - Jingzhou Wang
- Shihezi University School of Medicine, Bei-Er-Lu, Shihezi, Xinjiang 832000, People's Republic of China
| | - Keru Chen
- Shihezi University School of Medicine, Bei-Er-Lu, Shihezi, Xinjiang 832000, People's Republic of China
| | - Yuchun Deng
- Shihezi University School of Medicine, Bei-Er-Lu, Shihezi, Xinjiang 832000, People's Republic of China
| | - Xueting Zhang
- Shihezi University School of Medicine, Bei-Er-Lu, Shihezi, Xinjiang 832000, People's Republic of China
| | - Jiale Feng
- Shihezi University School of Medicine, Bei-Er-Lu, Shihezi, Xinjiang 832000, People's Republic of China
| | - Xue Li
- Shihezi University School of Medicine, Bei-Er-Lu, Shihezi, Xinjiang 832000, People's Republic of China
| | - Jiaojiao Zhu
- Shihezi University School of Medicine, Bei-Er-Lu, Shihezi, Xinjiang 832000, People's Republic of China
| | - Yinghua Ma
- Shihezi University School of Medicine, Bei-Er-Lu, Shihezi, Xinjiang 832000, People's Republic of China
| | - Tongtong Qiu
- Shihezi University School of Medicine, Bei-Er-Lu, Shihezi, Xinjiang 832000, People's Republic of China
| | - Cuizhe Wang
- Shihezi University School of Medicine, Bei-Er-Lu, Shihezi, Xinjiang 832000, People's Republic of China
| | - Jianxin Xie
- Shihezi University School of Medicine, Bei-Er-Lu, Shihezi, Xinjiang 832000, People's Republic of China
| | - Jun Zhang
- Shihezi University School of Medicine, Bei-Er-Lu, Shihezi, Xinjiang 832000, People's Republic of China
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20
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Abstract
Background: Neovascularization plays a crucial pathogenic role in tumor development and
vascular endothelial growth factor (VEGF-A) is a key signaling element that
drives angiogenesis, thereby facilitating hepatocellular cancer (HCC) growth
and metastasis. We aimed to define the relationship between serum VEGF-A
levels and clinical outcomes in a cohort of Turkish patients with HCC. Methods: We enrolled and prospectively followed 84 patients with HCC in our study.
Serum VEGF-A levels were measured and we assessed the association between
VEGF-A levels and clinical features. Results: Forty-eight patients had cirrhosis while 35 patients were noncirrhotic. Serum
VEGF-A levels were significantly lower in HCC patients with cirrhosis
compared to non-cirrhotic HCC patients (p = 0.03).In terms of viral
hepatitis subtype, 36 (%42.8) of patients were hepatitis B virus (HBV)
positive and 8 (%9.5) of patients were hepatitis C virus (HCV) positive.
Patients with serum VEGF-A levels ≥100 pg/mL had significantly lower OS
rates than patients with serum VEGF-A level <100 pg/mL (p = 0.01). The OS
rates were 5.8 and 14.2 months, respectively (p = 0.02). The median OS was
7.38 months (95% CI: 5.89-13.79 months). We observed a significant
relationship between serum VEGF-A level and tumor size. Patients with tumor
size ≤ 5cm had lower VEGF-A levels than patients with VEGF-A levels <5
cm. The VEGF-A levels were 132.7 and 342.1 pg/mL, respectively (p <
0.001). The median follow-up was 32 months. Conclusions: Serum VEGF-A level, a biological marker of angiogenesis, is an independent
predictor of survival in patients with HCC. Serum VEGF-A levels may be
utilized to predict response to treatment targeting serum VEGF-A in patients
with HCC.
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Affiliation(s)
- Sahin Lacin
- Department of Medical Oncology, Faculty of Medicine, 64173Yeditepe University, İstanbul, Turkey
| | - Suayib Yalcin
- Department of Medical Oncology, 64005Hacettepe University, Hacettepe Cancer Institute, Ankara, Turkey
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21
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Liu J, Liu Y, Gong W, Kong X, Wang C, Wang S, Liu A. Prognostic value of insulin-like growth factor 2 mRNA-binding protein 3 and vascular endothelial growth factor-A in patients with primary non-small-cell lung cancer. Oncol Lett 2019; 18:4744-4752. [PMID: 31611984 PMCID: PMC6781568 DOI: 10.3892/ol.2019.10835] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Accepted: 07/01/2019] [Indexed: 12/19/2022] Open
Abstract
Insulin-like growth factor 2 mRNA-binding protein 3 (IMP3) and vascular endothelial growth factor-A (VEGF-A) may play important roles in the process of tumor progression and tumor angiogenesis. The aim of the present study was to examine the co-expression of IMP3 and VEGF-A in primary human non-small cell lung cancer (NSCLC), to investigate the association between these two expression levels and determine the clinicopathological implications, including changes to microvessel density (MVD), and to assess the prognostic value of co-expression. Using immunohistochemical staining, the expression of IMP3, VEGF-A and CD34 expression was detected in 128 primary NSCLC tissue samples. According to the expression of IMP3 and VEGF-A, the cases were divided into four groups. Next, the clinicopathological features, MVD and survival time were investigated across the different groups. The immunohistochemical analyses demonstrated that there was a significant correlation between IMP3 and VEGF-A expression in NSCLC (r=0.181; P=0.041). Co-expression of IMP3 and VEGF-A was significantly associated with larger primary tumor size (P=0.016), poorer differentiation (P=0.014), more advanced Tumor-Node-Metastasis stage (P=0.012), increased MVD (P=0.004) and positive lymph node metastasis (P=0.002). Survival analysis demonstrated that cases with IMP3 and VEGF-A double-positive staining were significantly associated with lower survival rates compared with cases with double-negative staining (P=0.039). In the early NSCLC (I–IIa) subgroup, the mean survival time of the double-positive staining group was significantly shorter compared with that of the double-negative staining group (P=0.015). Co-expression of IMP3 and VEGF-A was associated with angiogenesis and a poorer prognosis in NSCLC, and may therefore play a critical role in NSCLC progression.
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Affiliation(s)
- Jiannan Liu
- Department of Oncology, Yuhuangding Hospital, Yantai, Shandong 264000, P.R. China
| | - Ying Liu
- Department of Oncology, Yuhuangding Hospital, Yantai, Shandong 264000, P.R. China
| | - Wenjing Gong
- Department of Oncology, Yuhuangding Hospital, Yantai, Shandong 264000, P.R. China
| | - Xiangshuo Kong
- Department of Oncology, Yuhuangding Hospital, Yantai, Shandong 264000, P.R. China
| | - Congcong Wang
- Department of Oncology, Yuhuangding Hospital, Yantai, Shandong 264000, P.R. China
| | - Shuhua Wang
- Department of Medical Record Information, Yuhuangding Hospital, Yantai, Shandong 264000, P.R. China
| | - Aina Liu
- Department of Oncology, Yuhuangding Hospital, Yantai, Shandong 264000, P.R. China
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22
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Stevens M, Star E, Lee M, Innes E, Li L, Bowler E, Harper S, Bates DO, Oltean S. The VEGF-A exon 8 splicing-sensitive fluorescent reporter mouse is a novel tool to assess the effects of splicing regulatory compounds in vivo. RNA Biol 2019; 16:1672-1681. [PMID: 31432737 PMCID: PMC6844573 DOI: 10.1080/15476286.2019.1652522] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Vascular endothelial growth factor (VEGF)-A is differentially spliced to give two functionally different isoform families; pro-angiogenic, pro-permeability VEGF-Axxx and anti-angiogenic, anti-permeability VEGF-Axxxb. VEGF-A splicing is dysregulated in several pathologies, including cancer, diabetes, and peripheral arterial disease. The bichromatic VEGF-A splicing-sensitive fluorescent reporter harboured in a transgenic mouse is a novel approach to investigate the splicing patterns of VEGF-A in vivo. We generated a transgenic mouse harbouring a splicing-sensitive fluorescent reporter designed to mimic VEGF-A terminal exon splicing (VEGF8ab) by insertion into the ROSA26 genomic locus. dsRED expression denotes proximal splice site selection (VEGF-Axxx) and eGFP expression denotes distal splice site selection (VEGF-Axxxb). We investigated the tissue-specific expression patterns in the eye, skeletal muscle, cardiac muscle, kidney, and pancreas, and determined whether the splicing pattern could be manipulated in the same manner as endogenous VEGF-A by treatment with the SRPK1 inhibitor SPHINX 31. We confirmed expression of both dsRED and eGFP in the eye, skeletal muscle, cardiac muscle, kidney, and pancreas, with the highest expression of both fluorescent proteins observed in the exocrine pancreas. The ratio of dsRED and eGFP matched that of endogenous VEGF-Axxx and VEGF-Axxxb. Treatment of the VEGF8ab mice with SPHINX 31 increased the mRNA and protein eGFP/dsRED ratio in the exocrine pancreas, mimicking endogenous VEGF-A splicing. The VEGF-A exon 8 splicing-sensitive fluorescent reporter mouse is a novel tool to assess splicing regulation in the individual cell-types and tissues, which provides a useful screening process for potentially therapeutic splicing regulatory compounds in vivo.
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Affiliation(s)
- M Stevens
- Institute of Biomedical and Clinical Science, Medical School, College of Medicine and Health, University of Exeter, Exeter, UK
| | - E Star
- Bristol Renal, School of Clinical Sciences, University of Bristol, Bristol, UK
| | - M Lee
- Bristol Renal, School of Clinical Sciences, University of Bristol, Bristol, UK
| | - E Innes
- Institute of Biomedical and Clinical Science, Medical School, College of Medicine and Health, University of Exeter, Exeter, UK
| | - L Li
- Institute of Biomedical and Clinical Science, Medical School, College of Medicine and Health, University of Exeter, Exeter, UK
| | - E Bowler
- Institute of Biomedical and Clinical Science, Medical School, College of Medicine and Health, University of Exeter, Exeter, UK
| | - S Harper
- Institute of Biomedical and Clinical Science, Medical School, College of Medicine and Health, University of Exeter, Exeter, UK.,School of Physiology, Pharmacology & Neuroscience, University of Bristol, Bristol, UK
| | - D O Bates
- Cancer Biology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham, UK
| | - S Oltean
- Institute of Biomedical and Clinical Science, Medical School, College of Medicine and Health, University of Exeter, Exeter, UK
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23
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Aiken J, Mandel ER, Riddell MC, Birot O. Hyperglycaemia correlates with skeletal muscle capillary regression and is associated with alterations in the murine double minute-2/forkhead box O1/thrombospondin-1 pathway in type 1 diabetic BioBreeding rats. Diab Vasc Dis Res 2019; 16:28-37. [PMID: 30360646 DOI: 10.1177/1479164118805928] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Type 1 diabetes can have deleterious effects on skeletal muscle and its microvasculature. Our laboratory has recently identified murine double minute-2 as a master regulator of muscle microvasculature by controlling expression levels of two key molecular actors of the angio-adaptive process: the pro-angiogenic vascular endothelial growth factor-A and the anti-angiogenic thrombospondin-1. Here, we show for the first time that in the soleus and plantaris muscles of the diabetes-prone BioBreeding rats, a rodent model of autoimmune type 1 diabetes, murine double minute-2 protein levels are significantly decreased, coinciding with elevated protein levels of thrombospondin-1 and its transcription factor forkhead box O1. Significant capillary regression was observed to similar extent in soleus and plantaris muscles of type 1 diabetic rats. Elevated blood glucose levels were correlated with the loss of capillaries, the reduction in murine double minute-2 expression and with the elevations in thrombospondin-1. Vascular endothelial growth factor-A protein levels were unaltered or even increased in diabetic animals, yet type 1 diabetic animals had less vascular endothelial growth factor receptor-2 abundance. The vascular endothelial growth factor-A/thrombospondin-1 ratio, a good indicator of skeletal muscle angio-adaptive environment, was decreased in type 1 diabetic muscle. Our results suggest that the murine double minute-2-forkhead box O1-thrombospondin-1 pathway plays an important role in angio-regulation of the skeletal muscle in the pathophysiological context of type 1 diabetes.
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Affiliation(s)
- Julian Aiken
- Muscle Health Research Centre, School of Kinesiology and Health Science, Faculty of Health, York University, Toronto, ON, Canada
| | - Erin R Mandel
- Muscle Health Research Centre, School of Kinesiology and Health Science, Faculty of Health, York University, Toronto, ON, Canada
| | - Michael C Riddell
- Muscle Health Research Centre, School of Kinesiology and Health Science, Faculty of Health, York University, Toronto, ON, Canada
| | - Olivier Birot
- Muscle Health Research Centre, School of Kinesiology and Health Science, Faculty of Health, York University, Toronto, ON, Canada
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24
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Zhou P, Xiong T, Chen J, Li F, Qi T, Yuan J. Clinical significance of melanoma cell adhesion molecule CD146 and VEGFA expression in epithelial ovarian cancer. Oncol Lett 2018; 17:2418-2424. [PMID: 30675307 DOI: 10.3892/ol.2018.9840] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 10/26/2018] [Indexed: 12/19/2022] Open
Abstract
Ovarian cancer is the fifth most common type of cancer in females; however, its asymptomatic progression and the lack of an efficient screening strategy leads to late diagnosis. The present study aimed to investigate the expression levels of cluster of differentiation (CD)146 and vascular endothelial growth factor A (VEGFA) in epithelial ovarian cancer, and their clinical significance. A total of 52 ovarian samples were tested, of which 22 were from patients with epithelial ovarian cancer and 30 were from non-cancer patients. The relative gene expression of CD146 and VEGFA was quantified using reverse transcription-quantitative polymerase chain reaction analysis. Western blotting was used to determine the protein expression levels. The relative gene expression levels of CD146 and VEGFA in tumor tissues were significantly increased compared with the control (4.92±0.44 vs. 1.05±0.06 and 3.08±0.17 vs. 1.06±0.07, P<0.01). The protein expression levels of CD146 and VEGFA in tumor tissue were also significantly increased compared with the control (0.70±0.02 vs. 0.41±0.07 and 0.54±0.01 vs. 0.26±0.01, P<0.01). There was a positive correlation between the expression levels of CD146 and VEGFA genes (r=0.78) and between the two proteins (r=0.69). Dot density frequency analysis indicated that CD146 and VEGFA were specifically present in tumor tissues. In conclusion, CD146 and VEGFA are co-overexpressed in ovarian cancer; their potential as tumor biomarkers or therapeutic targets for the treatment of ovarian cancer requires further investigation.
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Affiliation(s)
- Ping Zhou
- Department of Gynecology and Obstetrics, Cancer Hospital Affiliated to Xinjiang Medical University, Wulumuqi, Xinjiang 830011, P.R. China
| | - Tingchuan Xiong
- Department of Gynecology and Obstetrics, Cancer Hospital Affiliated to Xinjiang Medical University, Wulumuqi, Xinjiang 830011, P.R. China
| | - Jingxin Chen
- Department of Gynaecology and Obstetrics, Dongfang Hospital Affiliated to Tongji University, Shanghai 200120, P.R. China
| | - Fen Li
- Department of Gynecology and Obstetrics, Cancer Hospital Affiliated to Xinjiang Medical University, Wulumuqi, Xinjiang 830011, P.R. China
| | - Tingting Qi
- Department of Gynecology and Obstetrics, Cancer Hospital Affiliated to Xinjiang Medical University, Wulumuqi, Xinjiang 830011, P.R. China
| | - Jianlin Yuan
- Department of Gynecology and Obstetrics, Cancer Hospital Affiliated to Xinjiang Medical University, Wulumuqi, Xinjiang 830011, P.R. China
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25
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Sun Y, An N, Li J, Xia J, Tian Y, Zhao P, Liu X, Huang H, Gao J, Zhang X. miRNA-206 regulates human pulmonary microvascular endothelial cell apoptosis via targeting in chronic obstructive pulmonary disease. J Cell Biochem 2018; 120:6223-6236. [PMID: 30335896 DOI: 10.1002/jcb.27910] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Accepted: 09/25/2018] [Indexed: 12/23/2022]
Abstract
Chronic obstructive pulmonary disease (COPD) is a leading cause of death due to tis high morbidity and mortality. microRNAs have emerged as new biomarkers for the prognosis and diagnosis of patients with COPD. In this study, we aimed to investigate the expression of microRNA-206 (miR-206) in lung tissues from COPD patients and to explore the regulatory role of miR-206 in the human pulmonary microvascular endothelial cells (HPMECs). Our results showed that cigarette smoke extract (CSE) promoted cell apoptosis, increased caspase-3 activity, and upregulated the expression of miR-206 in HPMECs, which was significantly reversed by the miR-206 knockdown. Transfection with miR-206 mimics led to cell apoptosis and was closely related to changes in the protein expression levels of caspase-3, caspase-9, and Bcl-2 in HPMECs. Further bioinformatics prediction analysis revealed that the 3'-untranslated region (3'UTR) of Notch3 and vascular endothelial growth factor-A (VEGFA) harbored miR-206-binding sites, and overexpression of miR-206 repressed the luciferase activity of the vectors containing Notch3 and VEGFA 3'UTR. Overexpression of either Notch3 or VEGFA attenuated miR-206-induced cell apoptosis in HPMECs. More importantly, miR-206 expression was upregulated in the lung tissues from COPD patients and was positively corrected with forced expiratory volume 1% predicted in COPD patients, while Notch3 and VEGFA mRNA levels were downregulated and were negatively correlated with the expression level of miR-206 in the lung tissues from COPD patients. In conclusion, our results showed that miR-206 was upregulated in COPD patients and CSE-treated HPMECs, promoted cell apoptosis via directly targeting Notch3 and VEGFA in HPMECs.
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Affiliation(s)
- Ying Sun
- Basic Medicine College, Henan University of Chinese Medicine, Zhengzhou, China.,Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou, China.,Collaborative Innovation Center for Respiratory Disease Diagnosis and Treatment & Chinese Medicine Development of Henan Province, Henan University of Chinese Medicine, Zhengzhou, China
| | - Na An
- Department of Medicine, Henan University of Chinese Medicine, Zhengzhou, China
| | - Jiansheng Li
- Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou, China.,Collaborative Innovation Center for Respiratory Disease Diagnosis and Treatment & Chinese Medicine Development of Henan Province, Henan University of Chinese Medicine, Zhengzhou, China
| | - Jinchan Xia
- Basic Medicine College, Henan University of Chinese Medicine, Zhengzhou, China.,Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou, China.,Collaborative Innovation Center for Respiratory Disease Diagnosis and Treatment & Chinese Medicine Development of Henan Province, Henan University of Chinese Medicine, Zhengzhou, China
| | - Yange Tian
- Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou, China.,Collaborative Innovation Center for Respiratory Disease Diagnosis and Treatment & Chinese Medicine Development of Henan Province, Henan University of Chinese Medicine, Zhengzhou, China
| | - Peng Zhao
- Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou, China.,Collaborative Innovation Center for Respiratory Disease Diagnosis and Treatment & Chinese Medicine Development of Henan Province, Henan University of Chinese Medicine, Zhengzhou, China
| | - Xuefang Liu
- Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou, China.,Collaborative Innovation Center for Respiratory Disease Diagnosis and Treatment & Chinese Medicine Development of Henan Province, Henan University of Chinese Medicine, Zhengzhou, China
| | - Haiying Huang
- Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou, China.,Collaborative Innovation Center for Respiratory Disease Diagnosis and Treatment & Chinese Medicine Development of Henan Province, Henan University of Chinese Medicine, Zhengzhou, China
| | - Jianfeng Gao
- Basic Medicine College, Henan University of Chinese Medicine, Zhengzhou, China
| | - Xiaoli Zhang
- Basic Medicine College, Henan University of Chinese Medicine, Zhengzhou, China
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26
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Jeon HH, Yu Q, Lu Y, Spencer E, Lu C, Milovanova T, Yang Y, Zhang C, Stepanchenko O, Vafa RP, Coelho PG, Graves DT. FOXO1 regulates VEGFA expression and promotes angiogenesis in healing wounds. J Pathol 2018; 245:258-264. [PMID: 29574902 DOI: 10.1002/path.5075] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 02/07/2018] [Accepted: 03/13/2018] [Indexed: 02/05/2023]
Abstract
Angiogenesis is a critical aspect of wound healing. We investigated the role of keratinocytes in promoting angiogenesis in mice with lineage-specific deletion of the transcription factor FOXO1. The results indicate that keratinocyte-specific deletion of Foxo1 reduces VEGFA expression in mucosal and skin wounds and leads to reduced endothelial cell proliferation, reduced angiogenesis, and impaired re-epithelialization and granulation tissue formation. In vitro FOXO1 was needed for VEGFA transcription and expression. In a porcine dermal wound-healing model that closely resembles healing in humans, local application of a FOXO1 inhibitor reduced angiogenesis. This is the first report that FOXO1 directly regulates VEGFA expression and that FOXO1 is needed for normal angiogenesis during wound healing. Copyright © 2018 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
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Affiliation(s)
- Hyeran Helen Jeon
- Department of Orthodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA.,Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Quan Yu
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA.,Department of Orthodontics, Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, PR China
| | - Yongjian Lu
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA.,Department of Stomatology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, PR China
| | - Evelyn Spencer
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Chanyi Lu
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Tatyana Milovanova
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Yang Yang
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA.,State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, PR China
| | - Chenying Zhang
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA.,Department of Preventive Dentistry, Peking University School and Hospital of Stomatology, Beijing, PR China
| | - Olga Stepanchenko
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Rameen P Vafa
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Paulo G Coelho
- Biomaterials and Biomimetics, College of Dentistry, New York University, New York, NY, USA.,Hansjörg Wyss Department of Plastic Surgery, Langone Medical Center, New York University, New York, NY, USA
| | - Dana T Graves
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
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27
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Zeng C, Wen M, Liu X. Fibroblast activation protein in osteosarcoma cells promotes angiogenesis via AKT and ERK signaling pathways. Oncol Lett 2018; 15:6029-6035. [PMID: 29552230 DOI: 10.3892/ol.2018.8027] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2016] [Accepted: 01/10/2018] [Indexed: 12/15/2022] Open
Abstract
Although it is established as a marker of cancer-associated fibroblasts, the expression of fibroblast activation protein (FAP) is not restricted to stromal cells; its expression in multiple types of tumor cell and its pro-tumor functions have been reported. However, the role of FAP in angiogenesis in osteosarcoma remains uncharacterized. In the present study, it was identified that the mRNA and protein expression levels of FAP and vascular endothelial growth factor-A (VEGF-A) corresponded to each other in MG63, U2-OS and HOS osteosarcoma cells. Subsequent to upregulating FAP in MG63 cells, VEGF-A mRNA and protein expression significantly increased; subsequent to downregulating FAP in U2-OS cells, VEGF-A mRNA and protein expression significantly declined. These changes in VEGF-A level were also detected in the cell supernatant with ELISA. Conditioned medium (CM) from MG63 cells overexpressing FAP promoted the phosphorylation of AKT and extracellular signal-regulated kinase (ERK) in human umbilical vein endothelial cells (HUVECs), as well as the proliferation rate. The CM from U2-OS cells with FAP knockdown inhibited the proliferation rate of HUVECs. The phosphorylation of AKT and ERK was increased in MG63 cells overexpressing FAP, but reduced in U2-OS cells with FAP knockdown. Furthermore, treatment with the AKT inhibitor LY294002 or the ERK inhibitor U0126 inhibited the upregulation of VEGF-A induced by FAP expression. Collectively, the results suggest that FAP expression in osteosarcoma cells promotes angiogenesis.
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Affiliation(s)
- Chao Zeng
- Department of Orthopedics, Weifang Traditional Chinese Medical Hospital, Weifang, Shandong 261041, P.R. China
| | - Ming Wen
- Department of Orthopedics, Weifang Traditional Chinese Medical Hospital, Weifang, Shandong 261041, P.R. China
| | - Xiaomei Liu
- Oncology and Hematology Department, Huangdao District People's Hospital, Qingdao, Shandong 266000, P.R. China
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Zhang X, Luo H. Effects of thalidomide on growth and VEGF-A expression in SW480 colon cancer cells. Oncol Lett 2017; 15:3313-3320. [PMID: 29435073 DOI: 10.3892/ol.2017.7645] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 11/02/2017] [Indexed: 12/31/2022] Open
Abstract
Lymphatic and hematogenous spread are the most common ways for tumors to metastasize. Angiogenesis is essential for tumor growth and metastasis. Vascular endothelial growth factor (VEGF) particularly VEGF-A is important in the process of angiogenesis. The current research has indicated that thalidomide (THD) may be able to inhibit angiogenesis, stimulate the activity of the immune system and inhibit the adherence of cancer cells to stromal cells. These changes may lead to suppression of tumor occurrence and development. To date, to the best of our knowledge, the effects of THD on colon cancer SW480 cells have not been reported. In the present study, the effects of THD and a combination of THD and oxaliplatin (L-OHP) on the proliferation of SW480 cells have been investigated. Furthermore, the expression of VEGF-A and hypoxia-inducible factor 1 (HIF-1) was analyzed using MTT assay, quantitative polymerase chain reaction and western blot analysis. The results indicated that THD was able to inhibit SW480 cells in dose-and-time dependent manner and inhibit the expression of VEGF-A and HIF-1α. Furthermore, treatment with THD and L-OHP had synergistic inhibitory effect, which may provide a novel treatment strategy for advanced colorectal cancer.
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Affiliation(s)
- Xin Zhang
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Hesheng Luo
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
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29
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Zhang Y, Cao ZP, Mao RM, Du ZB, Mi L, Luo XY, Tian MH, Zhu BL. [The Changes of HIF-1α and VEGF-A in Myocardial Tissue of Rats with Arrhythmias]. Fa Yi Xue Za Zhi 2017; 33:225-231. [PMID: 29230983 DOI: 10.3969/j.issn.1004-5619.2017.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Indexed: 11/18/2022]
Abstract
OBJECTIVES To observe the expression changes of hypoxia inducible factor-1α(HIF-1α) and vascular endothelial growth factor-A (VEGF-A) in rats with arrhythmias, and to explore the differences of the expression pattern in the two indicators of acute myocardial ischemia caused by arrhythmias and coronary insufficiency. METHODS The arrhythmia was induced by CaCl₂, and the expression changes of HIF-1α and VEGF-A were detected by immunohistochemistry, Western blotting and real-time PCR within 6 h after the arrhythmia in rats. RESULTS The expression of HIF-1α and VEGF-A showed diffuse in the myocardial tissue of rats died from arrhythmias. Both of them increased in the early arrhythmia, then decreased. Extensive myocardial ischemia happened at the beginning of arrhythmia occurrence and its range didn't expand with time. CONCLUSIONS The expressions of HIF-1α and VEGF-A in myocardium of the rats with arrhythmia can provide evidence for the differential diagnosis of acute myocardial ischemia caused by fatal arrhythmia and coronary insufficiency.
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Affiliation(s)
- Y Zhang
- School of Forensic Medicine, China Medical University, Shenyang 110122, China
| | - Z P Cao
- School of Forensic Medicine, China Medical University, Shenyang 110122, China
| | - R M Mao
- School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Public Security Department of Liaoning Provincial, Shenyang 110032, China; 3. HeBei North University, Zhangjiakou 075000, China
| | - Z B Du
- School of Forensic Medicine, China Medical University, Shenyang 110122, China
| | - L Mi
- School of Forensic Medicine, China Medical University, Shenyang 110122, China.,HeBei North University, Zhangjiakou 075000, China
| | - X Y Luo
- School of Forensic Medicine, China Medical University, Shenyang 110122, China
| | - M H Tian
- School of Forensic Medicine, China Medical University, Shenyang 110122, China
| | - B L Zhu
- School of Forensic Medicine, China Medical University, Shenyang 110122, China
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30
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Bačić I, Karlo R, Zadro AŠ, Zadro Z, Skitarelić N, Antabak A. Tumor angiogenesis as an important prognostic factor in advanced non-small cell lung cancer (Stage IIIA). Oncol Lett 2017; 15:2335-2339. [PMID: 29434942 PMCID: PMC5777107 DOI: 10.3892/ol.2017.7576] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Accepted: 11/07/2017] [Indexed: 12/03/2022] Open
Abstract
The aim of the present study was to evaluate angiogenesis by determining the micro vascular density (MVD) and the expression of vascular endothelial growth factor (VEGF-A) in advanced non-small cell lung cancer (NSCLC) tumor samples, and to analyze their associations with clinical parameters and survival. Tumor tissue specimens of fifty patients (41 males and 9 females), who underwent radical surgical treatment for NSCLC in stage IIIA (T1-3N2) were collected for immunohistochemical analysis. MVD evaluation was performed using an anti-CD31 monoclonal antibody and VEGF-A expression using a polyclonal anti-VEGF-A antibody. The results were associated with two-year survival. Statistical analysis revealed significant associations in the level of angiogenesis (high MVD) and shorter survival of patients with NSCLC (P=0.0007). VEGF-A expression showed no association with micro vascular density (P=0.51) or survival (P=0.68). There was no significant association between MVD and VEGF-A. The measurable, clinical MVD parameters could be used as a reliable prognostic factor for the survival of patients with advanced NSCLC.
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Affiliation(s)
- Ivan Bačić
- Department of Surgery, Zadar General Hospital, Zadar 23000, Croatia.,Department of Health Studies, University of Zadar, Zadar 23000, Croatia
| | - Robert Karlo
- Department of Surgery, Zadar General Hospital, Zadar 23000, Croatia.,Department of Health Studies, University of Zadar, Zadar 23000, Croatia
| | - Ana Šoštarić Zadro
- Department of Radiology, University Hospital for Infectious Diseases, Zagreb 10000, Croatia
| | - Zvonko Zadro
- Department of Surgery, University Hospital, Sveti Duh, University of Zagreb, Zagreb 10000, Croatia
| | - Neven Skitarelić
- Department of Health Studies, University of Zadar, Zadar 23000, Croatia.,Department of Otorhinolaryngology, Zadar General Hospital, Zadar 23000, Croatia
| | - Anko Antabak
- Surgery Clinic, University Hospital Centre Zagreb, Zagreb 10000, Croatia
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Waltl I, Zehetner C, Seifarth C, Handle F, Kieselbach GF, Angermann R, Kralinger MT. Effects of Intravitreal Aflibercept on Galectin-1 and Vascular Endothelial Growth Factor-A Plasma Levels in Patients with Diabetic Retinopathy. Curr Eye Res 2017; 43:368-375. [PMID: 29172741 DOI: 10.1080/02713683.2017.1403632] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
PURPOSE To analyze the interaction between aflibercept and galectin-1 and evaluate the plasma levels of galectin-1 and vascular endothelial growth factor (VEGF)-A after intravitreal injection of aflibercept in patients with diabetic retinopathy (DR). METHODS Interaction of galectin-1 with aflibercept was determined via immunoprecipitation. Seventeen patients with type 2 diabetes and diabetic macular edema (DME) were each treated with a single intravitreal injection of aflibercept (2.0 mg, 50 µL) monthly for three consecutive months. Plasma galectin-1 and VEGF-A levels were measured just before an injection was administered, 1 week after the first injection, and 2 months after the last injection. Nineteen age- and sex-matched healthy participants served as controls. RESULTS Irrespective of the tested galectin-1 concentration, 24% of added galectin-1 was precipitated by aflibercept. Baseline plasma concentrations of galectin-1 were 22.0 and 23.0 ng/mL in the control and aflibercept-treated groups, respectively. Systemic galectin-1 levels increased to 27.0 and 24.0 ng/mL at 7 days and 4 weeks, respectively, after treatment. At week 8, plasma galectin-1 levels significantly increased to 36.0 ng/mL. This level persisted for 20 weeks. Systemic VEGF-A levels significantly reduced to below the minimum detectable dose in 16 DME patients at 7 days after treatment. This level persisted for 4 weeks. Plasma VEGF-A levels were reduced at weeks 8 (p = 0.099) and 20 (p = 0.023). Decreased plasma VEGF-A levels were observed in all patients after treatment. CONCLUSION We confirmed that physiological aflibercept levels precipitate galectin-1 in in vitro assays. Additionally, systemic upregulation of galectin-1 might be induced by intravitreal aflibercept, which may be relevant in the clinical outcomes of DR treatment.
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Affiliation(s)
- Inga Waltl
- a Department of Ophthalmology , Medical University Innsbruck , Innsbruck , Austria
| | - Claus Zehetner
- a Department of Ophthalmology , Medical University Innsbruck , Innsbruck , Austria
| | - Christof Seifarth
- a Department of Ophthalmology , Medical University Innsbruck , Innsbruck , Austria
| | - Florian Handle
- b Department of Urology, Division of Experimental Urology , Medical University Innsbruck , Innsbruck , Austria
| | - Gerhard F Kieselbach
- a Department of Ophthalmology , Medical University Innsbruck , Innsbruck , Austria
| | - Reinhard Angermann
- a Department of Ophthalmology , Medical University Innsbruck , Innsbruck , Austria
| | - Martina T Kralinger
- a Department of Ophthalmology , Medical University Innsbruck , Innsbruck , Austria
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32
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Michinaga S. The Endothelin ET B Receptor Antagonist BQ788 Protects against Brain Edema after Fluid Percussion Injury by Decreasing Vascular Endothelial Growth Factor-A Expression in Mice. YAKUGAKU ZASSHI 2017; 137:1241-1246. [PMID: 28966265 DOI: 10.1248/yakushi.17-00134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Brain edema is a severe morbid complication of brain injury, characterized by excessive fluid accumulation and an elevation of intracranial pressure. However, effective anti-brain edema drugs are lacking. One of the causes of brain edema is disruption of blood-brain barrier (BBB) function, which results in extravasation of intravascular fluid. After brain damage, astrocytes are activated, and astrocyte-derived vascular endothelial growth factor-A (VEGF-A) is known to induce BBB dysfunction. Therefore maintaining BBB integrity by regulating astrocyte function is a potentially effective strategy for treating brain edema. In this review, we focus on the endothelin ETB receptor and its role in regulation of astrocyte functions. In mice, brain damage was induced by fluid percussion injury (FPI), and the resulting BBB disruption and brain edema were observed in the mouse cerebrum. BQ788, a selective ETB receptor antagonist, attenuated the FPI-induced BBB disruption and brain edema. Levels of brain VEGF-A increased after FPI, mainly in reactive astrocytes. BQ788 suppressed the FPI-induced increase in VEGF-A expression in reactive astrocytes. Moreover, intraventricular administration of VEGF neutralizing antibody also attenuated FPI-induced BBB disruption and brain edema. Claudin-5 is an endothelial tight junction protein essential for normal BBB structure and function. Levels of claudin-5 protein were reduced by FPI. Furthermore, VEGF neutralizing antibody blocked FPI-induced decrease in claudin-5. These results suggest that the ETB receptor antagonist BQ788 protects against brain edema by inhibiting VEGF-A-mediated decrease in claudin-5.
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Affiliation(s)
- Shotaro Michinaga
- Laboratory of Pharmacology, Faculty of Pharmacy, Osaka Ohtani University
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33
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Wang N, Chen H, Teng Y, Ding X, Wu H, Jin X. Artesunate inhibits proliferation and invasion of mouse hemangioendothelioma cells in vitro and of tumor growth in vivo. Oncol Lett 2017; 14:6170-6176. [PMID: 29113263 DOI: 10.3892/ol.2017.6986] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Accepted: 06/09/2017] [Indexed: 01/01/2023] Open
Abstract
Artesunate has been demonstrated to be a novel potential antitumor agent in numerous studies. However, its efficacy in infantile hemangioma is unknown. The aim of the present study was to investigate the role of artesunate in the control of vascular tumor biological behavior and molecular mechanism using mouse hemangioendothelioma endothelial (EOMA) cells and a nude mouse model. Cell viability, apoptosis and invasion were determined by an MTT assay, flow cytometric analysis and Transwell invasion assay, respectively. Reverse transcription-quantitative polymerase chain reaction and western blotting were utilized to examine the expression of genes and proteins. Inoculated EOMA cells were injected into the subcutaneous tissues of nude mice to observe the effect of artesunate therapy on the vascular tumor, an effect that was similar to that of pingyangmycin (PYM). It was identified that artesunate treatment (0-600 µg/ml) inhibited cell growth in a time- and dose-dependent manner. Artesunate at 300 µg/ml significantly reduced the proliferation and invasion of EOMA cells, and significantly decreased the expression of vascular endothelial growth factor (VEGF)-A, VEGFR-1, VEGFR-2 and hypoxia inducible factor-1α over time; caspase-3 was simultaneously upregulated in vitro. Artesunate significantly inhibited tumor growth, and the curative effect was similar to that observed with PYM in vivo. It was concluded that artesunate could effectively inhibit the growth of vascular tumors, and thus could be a novel drug candidate for the treatment of infantile hemangioma.
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Affiliation(s)
- Ning Wang
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Medical University, Yuzhong, Chongqing 400014, P.R. China.,Key Laboratory of Pediatrics in Chongqing, Chongqing Medical University, Yuzhong, Chongqing 400014, P.R. China.,China International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing Medical University, Yuzhong, Chongqing 400014, P.R. China
| | - Hongxia Chen
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Medical University, Yuzhong, Chongqing 400014, P.R. China.,Key Laboratory of Pediatrics in Chongqing, Chongqing Medical University, Yuzhong, Chongqing 400014, P.R. China.,China International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing Medical University, Yuzhong, Chongqing 400014, P.R. China
| | - Yinping Teng
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Medical University, Yuzhong, Chongqing 400014, P.R. China.,Key Laboratory of Pediatrics in Chongqing, Chongqing Medical University, Yuzhong, Chongqing 400014, P.R. China.,China International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing Medical University, Yuzhong, Chongqing 400014, P.R. China
| | - Xionghui Ding
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Medical University, Yuzhong, Chongqing 400014, P.R. China.,China International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing Medical University, Yuzhong, Chongqing 400014, P.R. China
| | - Huan Wu
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Medical University, Yuzhong, Chongqing 400014, P.R. China.,Key Laboratory of Pediatrics in Chongqing, Chongqing Medical University, Yuzhong, Chongqing 400014, P.R. China.,China International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing Medical University, Yuzhong, Chongqing 400014, P.R. China
| | - Xianqing Jin
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Medical University, Yuzhong, Chongqing 400014, P.R. China.,Key Laboratory of Pediatrics in Chongqing, Chongqing Medical University, Yuzhong, Chongqing 400014, P.R. China.,China International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing Medical University, Yuzhong, Chongqing 400014, P.R. China.,Department of Neonatal Gastrointestinal Surgery Children's Hospital, Chongqing Medical University, Yuzhong, Chongqing 400014, P.R. China
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Abstract
Background Infantile hemangiomas (IHs) are the most common benign vascular tumor of infancy. They occur more frequently in female infants. The cause of hemangioma is currently unknown; however, current studies suggested the importance of estrogen (E2) signaling in hemangioma proliferation. Methods Hemangioma-derived stem cells (HemSCs) were cultured with estrogen for 48–72 h; the cell viability and proliferation were evaluated with the messenger RNA (mRNA) and protein expression levels of fibroblast growth factor 2 (FGF2), vascular endothelial growth factor-A (VEGF-A) and estrogen receptor-α (ER-α), by application of several in vitro assays, such as methyl thiazolyl tetrazolium (MTT), reverse transcriptase–polymerase chain reaction (RT-PCR), real-time PCR, enzyme-linked immunosorbent assay (ELISA) and Western blotting. Also, the cell population’s response to external estrogen was investigated by in vivo experiments. HemSCs and human umbilical vein endothelial cells (HUVECs) were mixed and injected subcutaneously into 20 flank of BALB/c-nu mice, which were randomly divided into 5 groups based on different E2 treatment doses (0, 0.01, 0.1 and 1 mg, respectively), 0.1 mg dimethyl sulfoxide (DMSO) as control. Each group of mice were treated intramuscularly every week, then 2 and 4 weeks later, the subcutaneous implants were harvested and evaluated the tumor tissues with microvessel density (MVD) assay and immunohistochemistry. Results The study demonstrated that application of E2 increased the expression of FGF2, VEGF-A, and ER-α in HemSCs with the optimal concentration from 10−9 to 10−5 M. Two-week treatment of E2 promoted expression of VEGF-A and FGF2 in HemSCs culture. Morphological, histological and immunohistological improvements were observed in vivo using murine IH model in which HemSCs and HUVECs were implanted into BALB/c-nu mice that were post-injected with E2. In the grafts, mean MVD was markedly increased. Conclusion The results suggested that E2 promotes angiogenesis via combination with ER-α to up-regulate the expression of VEGF-A in HemSCs, promoting proliferation of IHs. These findings provide critical insight into the potential mechanisms of E2 action on IHs.
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Affiliation(s)
- Ling Zhang
- Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Center for Specialty Strategy Research of Shanghai Jiao Tong University China Hospital Development Institute
| | - Hai Wei Wu
- Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Center for Specialty Strategy Research of Shanghai Jiao Tong University China Hospital Development Institute
| | - Weien Yuan
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai, People's Republic of China
| | - Jia Wei Zheng
- Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Center for Specialty Strategy Research of Shanghai Jiao Tong University China Hospital Development Institute
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Nakagawa M, Nishizaki N, Endo A, Someya T, Saito Y, Mizutani A, Hara T, Murano Y, Sakuraya K, Hara S, Umino D, Hirano D, Fujinaga S, Ohtomo Y, Shimizu T. Impaired nephrogenesis in neonatal rats with oxygen-induced retinopathy. Pediatr Int 2017; 59:704-710. [PMID: 28207964 DOI: 10.1111/ped.13264] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 02/10/2017] [Accepted: 02/13/2017] [Indexed: 12/20/2022]
Abstract
BACKGROUND Preterm neonates are born while nephrogenesis is ongoing, and are commonly exposed to factors in a hyperoxic environment that can impair renal development. Oxidative stress has also been implicated in the development of retinopathy of prematurity (ROP). The rat model of oxygen-induced retinopathy (OIR) is the most clinically relevant model of ROP because its biologic features closely resemble those of ROP in preterm infants. We investigated impaired renal development in a rat model of OIR. METHODS Newborn Sprague-Dawley rats were maintained in either a normoxic (room air, 21% O2 ; control group) or a controlled hyperoxic (80% O2 ; OIR group) environment from birth to postnatal day (P) 12. All pups were then raised in room air from P12 to P19. RESULTS The hyperoxic environment led to significantly higher urinary excretion of 8-hydroxy-2'-deoxyguanosine, a marker of oxidative DNA damage, and a reduction in nephrogenic zone width at P5 in OIR pups. Additionally, glomerular count was significantly reduced by 20% in the OIR group, and avascular and neovascular changes in the retina were observed only in the OIR group at P19. Messenger RNA levels of vascular endothelial growth factor-A (VEGF-A) and platelet-derived growth factor-β, essential angiogenic cytokines for glomerulogenesis, in the renal cortex were significantly lower at P5 and significantly higher at P19 in the OIR group compared with controls. CONCLUSION Renal impairment was caused by exposure to a hyperoxic environment during nephrogenesis, and the pathology of the impaired nephrogenesis in this OIR model reflects the characteristics of ROP observed in preterm infants.
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Affiliation(s)
- Mayu Nakagawa
- Department of Pediatrics and Adolescent Medicine, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Naoto Nishizaki
- Department of Pediatrics and Adolescent Medicine, Faculty of Medicine, Juntendo University, Tokyo, Japan
| | - Amane Endo
- Department of Pediatrics and Adolescent Medicine, Faculty of Medicine, Juntendo University, Tokyo, Japan
| | - Tomonosuke Someya
- Department of Pediatrics and Adolescent Medicine, Faculty of Medicine, Juntendo University, Tokyo, Japan
| | - Yuta Saito
- Department of Ophthalmology, Showa University School of Medicine, Tokyo, Japan
| | - Akira Mizutani
- Department of Pediatrics and Adolescent Medicine, Faculty of Medicine, Juntendo University, Tokyo, Japan
| | - Taichi Hara
- Department of Pediatrics and Adolescent Medicine, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Yayoi Murano
- Department of Pediatrics and Adolescent Medicine, Faculty of Medicine, Juntendo University, Tokyo, Japan
| | - Koji Sakuraya
- Department of Pediatrics and Adolescent Medicine, Faculty of Medicine, Juntendo University, Tokyo, Japan
| | - Satoshi Hara
- Department of Pediatrics and Adolescent Medicine, Faculty of Medicine, Juntendo University, Tokyo, Japan
| | - Daisuke Umino
- Department of Pediatrics and Adolescent Medicine, Faculty of Medicine, Juntendo University, Tokyo, Japan
| | - Daishi Hirano
- Department of Pediatrics, Jikei University School of Medicine, Tokyo, Japan
| | - Shuichiro Fujinaga
- Department of Nephrology, Saitama Children's Medical Center, Saitama, Japan
| | - Yoshiyuki Ohtomo
- Department of Pediatrics and Adolescent Medicine, Faculty of Medicine, Juntendo University, Tokyo, Japan
| | - Toshiaki Shimizu
- Department of Pediatrics and Adolescent Medicine, Graduate School of Medicine, Juntendo University, Tokyo, Japan
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Rother S, Samsonov SA, Moeller S, Schnabelrauch M, Rademann J, Blaszkiewicz J, Köhling S, Waltenberger J, Pisabarro MT, Scharnweber D, Hintze V. Sulfated Hyaluronan Alters Endothelial Cell Activation in Vitro by Controlling the Biological Activity of the Angiogenic Factors Vascular Endothelial Growth Factor-A and Tissue Inhibitor of Metalloproteinase-3. ACS Appl Mater Interfaces 2017; 9:9539-9550. [PMID: 28248081 DOI: 10.1021/acsami.7b01300] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Several pathologic conditions such as rheumatoid arthritis, ocular neovascularization, cancer, or atherosclerosis are often associated with abnormal angiogenesis, which requires innovative biomaterial-based treatment options to control the activity of angiogenic factors. Here, we studied how sulfated hyaluronan (sHA) and oversulfated chondroitin sulfate derivatives as potential components of functional biomaterials modulate vascular endothelial growth factor-A (VEGF-A) signaling and endothelial cell activity in vitro. Tissue inhibitor of metalloproteinase-3 (TIMP-3), an effective angiogenesis inhibitor, exerts its activity by competing with VEGF-A for binding to VEGF receptor-2 (VEGFR-2). However, even though TIMP-3 and VEGF-A are known to interact with glycosaminoglycans (GAGs), the potential role and mechanism by which GAGs alter the VEGF-A/TIMP-3 regulated VEGFR-2 signaling remains unclear. Combining surface plasmon resonance, immunobiochemical analysis, and molecular modeling, we demonstrate the simultaneous binding of VEGF-A and TIMP-3 to sHA-coated surfaces and identified a novel mechanism by which sulfated GAG derivatives control angiogenesis: GAG derivatives block the binding of VEGF-A and TIMP-3 to VEGFR-2 thereby reducing their biological activity in a defined, sulfation-dependent manner. This effect was stronger for sulfated GAG derivatives than for native GAGs. The simultaneous formation of TIMP-3/sHA complexes partially rescues the sHA inhibited VEGF-A/VEGFR-2 signaling and endothelial cell activation. These results provide novel insights into the regulation of angiogenic factors by GAG derivatives and highlight the potential of sHA derivatives for the treatment of diseases associated with increased VEGF-A and VEGFR-2 levels.
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Affiliation(s)
- Sandra Rother
- Institute of Materials Science, Max Bergmann Center of Biomaterials, Technische Universität Dresden , 01069 Dresden, Germany
| | - Sergey A Samsonov
- Structural Bioinformatics, BIOTEC Technische Universität Dresden , Tatzberg 47-51, 01307 Dresden, Germany
| | | | | | - Jörg Rademann
- Institute of Pharmacy & Institute of Chemistry and Biochemistry, Freie Universität Berlin , Königin-Luise-Strasse 2, 14195 Berlin, Germany
- Institute of Medical Physics and Biophysics, Universität Leipzig , Härtelstrasse 16/18, 04107 Leipzig, Germany
| | - Joanna Blaszkiewicz
- Institute of Pharmacy & Institute of Chemistry and Biochemistry, Freie Universität Berlin , Königin-Luise-Strasse 2, 14195 Berlin, Germany
- Institute of Medical Physics and Biophysics, Universität Leipzig , Härtelstrasse 16/18, 04107 Leipzig, Germany
| | - Sebastian Köhling
- Institute of Pharmacy & Institute of Chemistry and Biochemistry, Freie Universität Berlin , Königin-Luise-Strasse 2, 14195 Berlin, Germany
- Institute of Medical Physics and Biophysics, Universität Leipzig , Härtelstrasse 16/18, 04107 Leipzig, Germany
| | - Johannes Waltenberger
- Department of Cardiovascular Medicine, University of Münster , Albert-Schweitzer-Campus 1, 48149 Münster, Germany
| | - M Teresa Pisabarro
- Structural Bioinformatics, BIOTEC Technische Universität Dresden , Tatzberg 47-51, 01307 Dresden, Germany
| | - Dieter Scharnweber
- Institute of Materials Science, Max Bergmann Center of Biomaterials, Technische Universität Dresden , 01069 Dresden, Germany
| | - Vera Hintze
- Institute of Materials Science, Max Bergmann Center of Biomaterials, Technische Universität Dresden , 01069 Dresden, Germany
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Yang T, Yao Q, Cao F, Liu Q, Liu B, Wang XH. Silver nanoparticles inhibit the function of hypoxia-inducible factor-1 and target genes: insight into the cytotoxicity and antiangiogenesis. Int J Nanomedicine 2016; 11:6679-6692. [PMID: 27994464 PMCID: PMC5154724 DOI: 10.2147/ijn.s109695] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Hypoxia-inducible factor-1 (HIF-1) is a transcription factor that is activated upon exposure to hypoxic stress. It modulates a number of cellular responses including proliferation, apoptosis, angiogenesis, and metabolism by activating a panel of target genes in response to hypoxia. The HIF-1 level is often upregulated in the hypoxic microenvironment of solid tumors, which contributes to cancer treatment failure. Here we report that silver nanoparticles (AgNPs), which are widely used as an antimicrobial agent, are an effective inhibitor of HIF-1. AgNPs inhibited the activation of a HIF-dependent reporter construct after the cells were exposed to hypoxic conditions or treated with cobalt chloride, a hypoxia mimetic agent. The AgNPs also interfered with the accumulation of HIF-1α protein and the induction of the endogenous HIF target genes, VEGF-A and GLUT1. Since both HIF-1 and vascular endothelial growth factor-A play an important role in angiogenesis, AgNPs also inhibited angiogenesis in vitro. Our data reveal a new mechanism of how AgNPs act on cellular function, that is, they disrupt HIF signaling pathway. This finding provides a novel insight into how AgNPs can inhibit cancer cell growth and angiogenesis.
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Affiliation(s)
- Tieshan Yang
- Laboratory for Biomedical Photonics, Institute of Laser Engineering, Beijing University of Technology
| | - Qian Yao
- Laboratory for Biomedical Photonics, Institute of Laser Engineering, Beijing University of Technology
| | - Fei Cao
- Laboratory for Biomedical Photonics, Institute of Laser Engineering, Beijing University of Technology
| | - Qianqian Liu
- Laboratory for Biomedical Photonics, Institute of Laser Engineering, Beijing University of Technology
| | - Binlei Liu
- Cancer Institute and Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People's Republic of China
| | - Xiu-Hong Wang
- Laboratory for Biomedical Photonics, Institute of Laser Engineering, Beijing University of Technology
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Hsu PY, Hsi E, Wang TM, Lin RT, Liao YC, Juo SHH. MicroRNA let-7g possesses a therapeutic potential for peripheral artery disease. J Cell Mol Med 2016; 21:519-529. [PMID: 27696675 PMCID: PMC5323674 DOI: 10.1111/jcmm.12997] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 08/23/2016] [Indexed: 12/28/2022] Open
Abstract
Peripheral artery disease (PAD) is a manifestation of systemic atherosclerosis and conveys a significant health burden globally. Critical limb ischaemia encompasses the most severe consequence of PAD. Our previous studies indicate that microRNA let‐7g prevents atherosclerosis and improves endothelial functions. This study aimed to investigate whether and how let‐7g therapy may improve blood flow to ischaemic limbs. The present study shows that let‐7g has multiple pro‐angiogenic effects on mouse ischaemic limb model and could be a potential therapeutic agent for PAD. Mice receiving intramuscular injection of let‐7g had more neovascularization, better local perfusion and increased recruitment of endothelial progenitor cells after hindlimb ischaemia. The therapeutic effects of let‐7g's on angiogenesis are mediated by multiple regulatory machinery. First, let‐7g increased expression of vascular endothelial growth factor‐A (VEGF‐A) and VEGF receptor‐2 (VEGFR‐2) through targeting their upstream regulators HIF‐3α and TP53. In addition, let‐7g affected the splicing factor SC35 which subsequently enhanced the alternative splicing of VEGF‐A from the anti‐angiogenic isoform VEGF‐A165b towards the pro‐angiogenic isoform VEGF‐A164a. The pleiotropic effects of let‐7g on angiogenesis imply that let‐7g may possess a therapeutic potential in ischaemic diseases.
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Affiliation(s)
- Po-Yuan Hsu
- Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
| | - Edward Hsi
- Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
| | - Tzu-Ming Wang
- Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
| | - Ruey-Tay Lin
- Department of Neurology, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yi-Chu Liao
- Department of Neurology, National Yang-Ming University School of Medicine, Taipei, Taiwan.,Department of Neurology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Suh-Hang H Juo
- Department of Medical Research, China Medical University Hospital, Taichung, Taiwan.,Department of Neurology, Kaohsiung Medical University, Kaohsiung, Taiwan.,Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan
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Duan Q, Ni L, Wang P, Chen C, Yang L, Ma B, Gong W, Cai Z, Zou M, Wang DW. Deregulation of XBP1 expression contributes to myocardial vascular endothelial growth factor-A expression and angiogenesis during cardiac hypertrophy in vivo. Aging Cell 2016; 15:625-33. [PMID: 27133203 PMCID: PMC4933664 DOI: 10.1111/acel.12460] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/08/2016] [Indexed: 01/18/2023] Open
Abstract
Endoplasmic reticulum (ER) stress has been reported to be involved in many cardiovascular diseases such as atherosclerosis, diabetes, myocardial ischemia, and hypertension that ultimately result in heart failure. XBP1 is a key ER stress signal transducer and an important pro‐survival factor of the unfolded protein response (UPR) in mammalian cells. The aim of this study was to establish a role for XBP1 in the deregulation of pro‐angiogenic factor VEGF expression and potential regulatory mechanisms in hypertrophic and failing heart. Western blots showed that myocardial XBP1s protein was significantly increased in both isoproterenol (ISO)‐induced and pressure‐overload‐induced hypertrophic and failing heart compared to normal control. Furthermore, XBP1 silencing exacerbates ISO‐induced cardiac dysfunction along with a reduction of myocardial capillary density and cardiac expression of pro‐angiogenic factor VEGF‐A in vivo. Consistently, experiments in cultured cardiomyocytes H9c2 (2‐1) cells showed that UPR‐induced VEGF‐A upregulation was determined by XBP1 expression level. Importantly, VEGF‐A expression was increased in failing human heart tissue and blood samples and was correlated with the levels of XBP1. These results suggest that XBP1 regulates VEGF‐mediated cardiac angiogenesis, which contributes to the progression of adaptive hypertrophy, and might provide novel targets for prevention and treatment of heart failure.
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Affiliation(s)
- Quanlu Duan
- Division of Cardiology, Department Internal Medicine, Tongji Hospital Tongji Medical College, Huazhong University of Science and Technology Wuhan 430030 People's Republic of China
| | - Li Ni
- Division of Cardiology, Department Internal Medicine, Tongji Hospital Tongji Medical College, Huazhong University of Science and Technology Wuhan 430030 People's Republic of China
| | - Peihua Wang
- Division of Cardiology, Department Internal Medicine, Tongji Hospital Tongji Medical College, Huazhong University of Science and Technology Wuhan 430030 People's Republic of China
| | - Chen Chen
- Division of Cardiology, Department Internal Medicine, Tongji Hospital Tongji Medical College, Huazhong University of Science and Technology Wuhan 430030 People's Republic of China
| | - Lei Yang
- Division of Cardiology, Department Internal Medicine, Tongji Hospital Tongji Medical College, Huazhong University of Science and Technology Wuhan 430030 People's Republic of China
| | - Ben Ma
- Division of Cardiology, Department Internal Medicine, Tongji Hospital Tongji Medical College, Huazhong University of Science and Technology Wuhan 430030 People's Republic of China
| | - Wei Gong
- Division of Cardiology, Department Internal Medicine, Tongji Hospital Tongji Medical College, Huazhong University of Science and Technology Wuhan 430030 People's Republic of China
| | - Zhejun Cai
- Division of Cardiology, Department Internal Medicine, Tongji Hospital Tongji Medical College, Huazhong University of Science and Technology Wuhan 430030 People's Republic of China
| | - Ming‐Hui Zou
- Center for Molecular and Translational Medicine Georgia State University Atlanta 30303 GA USA
| | - Dao Wen Wang
- Division of Cardiology, Department Internal Medicine, Tongji Hospital Tongji Medical College, Huazhong University of Science and Technology Wuhan 430030 People's Republic of China
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Abstract
Angiogenesis is a critical process in the development of tumor malignancy and occurs at various stages of tumor progression. Interleukin-8 (IL-8) is a pro-angiogenic factor produced by tumor-infiltrating macrophages that has been revealed to facilitate the development of angiogenesis in various cancers. However, whether IL-8 activates angiogenesis in gastric cancer remains unclear. The present study investigated the effect of IL-8 on the migration and canalization capacities of human umbilical vein endothelial cells (HUVECs). In addition, the protein and messenger RNA (mRNA) expression of selected angiogenesis markers, consisting of vascular endothelial growth factor (VEGF)-A, VEGF receptor (VEGFR)-1 and VEGFR-2, were assessed in the HUVECs. The HUVECs were co-cultured with human gastric cancer SGC7901 cells and exposed to various concentrations of IL-8 (0, 0.2, 0.5, 0.8 and 1.0 ng/ml). The migration and canalization abilities of the cells were detected by Transwell chamber and tube formation assays. Protein expression was detected using immunofluorescence and western blot analysis, and mRNA levels were assessed using reverse transcription quantitative polymerase chain reaction. The protein and mRNA levels of VEGF-A, VEGFR-1 and VEGFR-2 were measured in HUVECs cultured for 24 h. IL-8 at concentrations of 0.5, 0.8 and 1.0 ng/ml significantly promoted HUVEC cell migration (P=0.005, P=0.001 and P<0.001, respectively) and tube formation (P=0.039, P=0.003 and P<0.001, respectively). IL-8 at concentrations of 0.2, 0.5, 0.8 and 1.0 ng/ml significantly elevated the protein levels of VEGF-A (P<0.001) and VEGFR-2 (P=0.034, P<0.001, P<0.001 and P<0.001, respectively). IL-8 at concentrations of 0.8 and 1.0 ng/ml significantly elevated the protein levels of VEGF-1 (P=0.037 and P=0.002, respectively). Similarly, IL-8 at concentrations of 0.5, 0.8 and 1.0 ng/ml significantly upregulated the mRNA levels of VEGF-A (P=0.046, P=0.001 and P<0.001, respectively) and VEGFR-1 (P=0.042, P<0.001 and P<0.001, respectively). IL-8 at concentrations of 0.2, 0.5, 0.8 and 1.0 ng/ml significantly upregulated the mRNA levels of VEGFR-2 (P=0.003, P=0.005, P<0.001 and P<0.001, respectively). In conclusion, IL-8 may be a potent promoter of angiogenesis in gastric cancer.
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Affiliation(s)
- Jun Shi
- Department of Traditional Chinese Medicine, Shanghai Changzheng Hospital, The Second Military Medical University, Shanghai 200003, P.R. China
| | - Pin-Kang Wei
- Department of Traditional Chinese Medicine, Shanghai Changzheng Hospital, The Second Military Medical University, Shanghai 200003, P.R. China
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Miyata Y, Mitsunari K, Asai A, Takehara K, Mochizuki Y, Sakai H. Pathological significance and prognostic role of microvessel density, evaluated using CD31, CD34, and CD105 in prostate cancer patients after radical prostatectomy with neoadjuvant therapy. Prostate 2015; 75:84-91. [PMID: 25307287 PMCID: PMC4282783 DOI: 10.1002/pros.22894] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Accepted: 08/18/2014] [Indexed: 01/22/2023]
Abstract
BACKGROUND Neoadjuvant hormonal therapy (NHT) is performed to improve the outcome in organ-confined prostate cancer. However, there is little information regarding the relationship between angiogenesis and NHT. The aim of this study was to identify a suitable method to evaluate the angiogenic status of tissue, and to determine the prognostic value of this method for biochemical recurrence in patients who had undergone radical prostatectomy after NHT. METHODS We analyzed 108 formalin-fixed specimens from patients treated by radical prostatectomy. NHT was administered in 48 patients (52.9%) and 60 patients who had a similar Gleason score and pT stage were selected as a non-NHT treated control group. Microvessel density (MVD) was measured using anti-CD31, anti-CD34, and anti-CD105 antibodies. The expressions of vascular endothelial growth factor (VEGF)-A and thrombospondin (TSP)-1 were also evaluated by immunohistochemistry. The prognostic value of CD31-, CD34-, and CD105-MVD for biochemical recurrence was investigated. RESULTS The mean/SD of CD105-MVD in the NHT group (13.3/4.7) was significantly (P < 0.001) lower than that in the non-NHT group (125.8/7.3). In the NHT group, CD105-MVD was associated with pT stage and it was positively correlated with VEGF-A expression (r = 0.56, P < 0.001) and negatively correlated with TSP-1 expression (r = 0.42, P = 0.003). CD105-MVD was identified as a significant predictor of biochemical recurrence (BCR) in patients treated with NHT (log rank test, P < 0.001). Although CD31- and CD34-MVD were significantly associated with pT stage or Gleason score in non-NHT group, they were not associated with pathological features and BCR in NHT group. CONCLUSIONS Our results indicate that CD105-MVD reflects the angiogenic conditions in prostate cancer tissues treated with NHT. CD105-MVD was also identified as a significant and independent predictor of biochemical recurrence in prostate cancer patients who underwent radical prostatectomy with NHT.
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Affiliation(s)
- Yasuyoshi Miyata
- Department of Urology, Nagasaki University Graduate School of Biomedical SciencesNagasaki, Japan
- Correspondence to: Yasuyoshi Miyata, M.D., Ph.D., Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan., E-mail:
| | - Kensuke Mitsunari
- Department of Urology, Nagasaki University Graduate School of Biomedical SciencesNagasaki, Japan
| | - Akihiro Asai
- Department of Urology, Nagasaki University Graduate School of Biomedical SciencesNagasaki, Japan
| | - Kosuke Takehara
- Department of Urology, Nagasaki University Graduate School of Biomedical SciencesNagasaki, Japan
| | - Yasushi Mochizuki
- Department of Urology, Nagasaki University Graduate School of Biomedical SciencesNagasaki, Japan
| | - Hideki Sakai
- Department of Urology, Nagasaki University Graduate School of Biomedical SciencesNagasaki, Japan
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Yang S, Gao Q, Jiang W. Relationship between tumour angiogenesis and expression of cyclo-oxygenase-2 and vascular endothelial growth factor-A in human renal cell carcinoma. J Int Med Res 2014; 43:110-7. [PMID: 25488950 DOI: 10.1177/0300060514545799] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
OBJECTIVE *These authors contributed equally to this work. To study the relationship between tumour angiogenesis and expression of cyclo-oxygenase (COX)-2 and vascular endothelial growth factor (VEGF)-A in human renal cell carcinoma. METHODS Archival samples of primary human renal cell carcinoma tissue and surrounding normal renal tissue (control samples) obtained from patients diagnosed with renal cell carcinoma were analysed for COX-2 and VEGF-A expression by immunohistochemistry using specific monoclonal antibodies. Tumour microvasculature was examined using factor VIII-related antigen antibody staining. RESULTS A total of 33 renal cell carcinoma and 12 control renal tissue specimens were included. COX-2 and VEGF-A genes were overexpressed in tumour specimens compared with normal epithelia. A significant correlation was found between COX-2 and VEGF-A expression. Microvessel density was found to be increased in tumour tissues that expressed COX-2 and VEGF-A. CONCLUSION Microvessel density was increased in tumour tissues that expressed COX-2 and VEGF-A, suggesting that COX-2 and VEGF-A are related to tumour angiogenesis in human renal cell carcinoma.
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Affiliation(s)
- Sheng Yang
- Department of Internal Medicine Oncology, The Union Hospital of Fujian Medical University, Fuzhou, China Fujian Provincial Key Laboratory of Tumour Translational Medicine, Fuzhou, China
| | - Qin Gao
- Teaching and Research Department of Thoracic Surgery, Union Clinical Medical College of Fujian Medical University, Fuzhou, China
| | - Wei Jiang
- Department of Urology, The Union Hospital of Fujian Medical University, Fuzhou, China
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Steinhoff M, Schauber J, Leyden JJ. New insights into rosacea pathophysiology: a review of recent findings. J Am Acad Dermatol 2014; 69:S15-26. [PMID: 24229632 DOI: 10.1016/j.jaad.2013.04.045] [Citation(s) in RCA: 203] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Accepted: 04/21/2013] [Indexed: 02/06/2023]
Abstract
Rosacea is a common, chronic inflammatory skin disease of poorly understood origin. Based on its clinical features (flushing, chronic inflammation, fibrosis) and trigger factors, a complex pathobiology involving different regulatory systems can be anticipated. Although a wealth of research has shed new light over recent years on its pathophysiology, the precise interplay of the various dysregulated systems (immune, vascular, nervous) is still poorly understood. Most authors agree on 4 major clinical subtypes of rosacea: erythematotelangiectatic rosacea, papulopustular rosacea, phymatous rosacea, and ocular rosacea. Still, it needs to be elucidated whether these subtypes develop in a consecutive serial fashion or if any subtypes may occur individually as part of a syndrome. Because rosacea often affects multiple family members, a genetic component is also suspected, but the genetic basis of rosacea remains unclear. During disease manifestation and early stage, the innate immune system and neurovascular dysregulation seem to be driving forces in rosacea pathophysiology. Dissection of major players for disease progression and in advanced stages is severely hampered by the complex activation of the innate and adaptive immune systems, enhanced neuroimmune communication, profound blood vessel and possibly lymphatic vessel changes, and activation of almost every resident cell in the skin. This review discusses some of the recent findings and aims to build unifying hypotheses for a modern understanding of rosacea pathophysiology.
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Affiliation(s)
- Martin Steinhoff
- Department of Dermatology, University of California, San Francisco, California.
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Abstract
Sturge-Weber syndrome (SWS) consists of a capillary-venous vascular malformation of the brain, skin and eye. Urine vascular biomarkers have been demonstrated to be abnormal in other vascular anomalies and to correlate with clinical severity and progression. The current study investigated the use of urinary matrix metalloproteinase (MMP)-2, MMP-9, vascular endothelial growth factor (VEGF), and basic fibroblast growth factor (bFGF) levels to non-invasively monitor the progression of SWS. Fifty-four urine samples were collected from patients seen at the Hunter Nelson Sturge-Weber Center at Kennedy Krieger Institute. Urine was analyzed for MMP-2, MMP-9, VEGF and bFGF levels and correlated with clinical outcome at the time of urine collection (n = 48) and 1 year following urine collection (n = 22). Analysis revealed that MMP-2 (p = 0.033) and MMP-9 (p = 0.010) were significantly more likely to be present in the urine of SWS subjects compared to controls and that bFGF was significantly more likely to be present at abnormal levels (p = 0.005). MMP-2 correlated with a more severe clinical score at the time of urine collection, while both MMP-2 and MMP-9 levels correlated with greater disease severity at time of collection. bFGF levels correlated with improved clinical score 1 year after urine collection. These results suggest that MMP-2 and MMP-9 levels may be useful in assessing SWS progression, as well as indicating which patients might benefit from more aggressive treatment, while bFGF levels may be useful in judging the efficacy of neurologic treatment in SWS.
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Affiliation(s)
- Aditya K Sreenivasan
- Department of Neurology and Developmental Medicine, Kennedy Krieger Institute, Baltimore, MD 21205, USA
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Aprahamian TR. Elevated adiponectin expression promotes adipose tissue vascularity under conditions of diet-induced obesity. Metabolism 2013; 62:1730-8. [PMID: 23993424 PMCID: PMC3834157 DOI: 10.1016/j.metabol.2013.07.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Revised: 07/22/2013] [Accepted: 07/23/2013] [Indexed: 12/17/2022]
Abstract
OBJECTIVE Despite the clinical prevalence of obesity, only recently has the importance of adipose tissue microenvironment been addressed at a molecular level. Here, I focused on the fat-derived cytokine adiponectin as a model system to understand the mechanism underlying adipose tissue vascularity, perfusion, inflammation, and systemic metabolic function. MATERIALS/METHODS Wild type, adiponectin-deficient, and adiponectin transgenic-overexpressing mice were maintained on chow diet or high fat/high sucrose diet for 32weeks. Vascularization of adipose tissue was examined by confocal microscopy and perfusion was determined by recovery of injected microspheres. Adipose tissue inflammation and systemic metabolic function were also assessed. RESULTS Modest over-expression of adiponectin led to a marked increase in adipose tissue vascularity and perfusion, and this was associated with diminished hypoxia and an increase in vascular endothelial growth factor-A (VEGF-A) expression in the obese mice. Adiponectin over-expression in diet-induced obese mice also led to the virtual absence of macrophage infiltration and the elimination of crown-like structures. Adiponectin transgenic mice also displayed a remarkable sensitivity to insulin and diminished hepatic steatosis. Under the conditions of these experiments, adiponectin deficiency did not diminish adipose tissue perfusion or worsen metabolic function compared to wild type mice fed the high fat/high sucrose diet. CONCLUSION These data demonstrate that increased circulating adiponectin levels, and the obese environment, are associated with increased adipose tissue vascularization and perfusion, and improved metabolic function under conditions of long term diet-induced obesity.
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Affiliation(s)
- Tamar R Aprahamian
- Department of Medicine-Renal Section, Boston University School of Medicine, 650 Albany Street, X536, Boston, MA 02118, USA.
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de Linde Henriksen M, Andersen PH, Mietelka K, Farina L, Thomsen PD, Plummer CE, Mangan BG, Heegaard S, Coleman JK, Toft N, Brooks DE. Equine deep stromal abscesses (51 cases - 2004-2009)--Part 2: the histopathology and immunohistochemical aspect with attention to the histopathologic diagnosis, vascular response, and infectious agents. Vet Ophthalmol 2013; 17 Suppl 1:14-22. [PMID: 24131662 DOI: 10.1111/vop.12102] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
PURPOSE To investigate histopathologic and immunohistochemical aspects of equine deep stromal abscesses (DSA) with a focus on the histopathologic diagnosis, presumptive etiology, and the immunohistochemical expression of three angiogenesis-related factors: vascular endothelial growth factor-A (VEGF-A), pigment epithelium-derived factor (PEDF), and interleukin-1 receptor antagonist (IL-1ra). SAMPLE POPULATION Paraffin-embedded biopsy samples from 51 DSA. The biopsies were collected from full-thickness penetrating keratoplasty or split-thickness lamellar keratoplasty surgeries at the University of Florida Veterinary Medical Center in the period from 2004 to 2009. PROCEDURE The histopathologic and immunohistochemical findings were tested for association between each other. Prevalence calculation and test for association with qualitative data analysis was used for data evaluation. RESULTS Fungal hyphae were found histologically in 47.1% (n = 24) of the DSA cases. Histopathologically, most fungal DSA showed suppurative keratitis (n = 34; 66.7%) and little to no stromal vascularization infiltrating the abscess (negative association, P = 0.005). All three angiogenesis-related factors were expressed to some degree in DSA tissue. A negative association between VEGF-A and PEDF when compared to the presence of fungal hyphae (P < 0.001, P = 0.023) indicated that cases positive for these two factors will most probably not have fungal hyphae present. CONCLUSION Abnormally decreased VEGF-A expression is suggested as the reason for the slow vascularization and delayed resolution of fungal DSA, whereas PEDF and IL-ra did not seem to have any influence on the vascularization process. Clinical and histopathologic characteristics of DSA make it possible to suggest an etiology for an equine DSA with an unknown etiology.
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Affiliation(s)
- Michala de Linde Henriksen
- Faculty of Health and Medical Sciences, Department of Veterinary Clinical and Animal Sciences, University of Copenhagen, Frederiksberg, Denmark; Departments of Large and Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL, USA; Department of Veterinary Clinical Sciences, Comparative Ophthalmology, College of Veterinary Medicine, University of Minnesota, Saint Paul, MN, USA
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Hale LJ, Hurcombe J, Lay A, Santamaría B, Valverde AM, Saleem MA, Mathieson PW, Welsh GI, Coward RJ. Insulin directly stimulates VEGF-A production in the glomerular podocyte. Am J Physiol Renal Physiol 2013; 305:F182-8. [PMID: 23698113 DOI: 10.1152/ajprenal.00548.2012] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Podocytes are critically important for maintaining the integrity of the glomerular filtration barrier and preventing albuminuria. Recently, it has become clear that to achieve this, they need to be insulin sensitive and produce an optimal amount of VEGF-A. In other tissues, insulin has been shown to regulate VEGF-A release, but this has not been previously examined in the podocyte. Using in vitro and in vivo approaches, in the present study, we now show that insulin regulates VEGF-A in the podocyte in both mice and humans via the insulin receptor (IR). Insulin directly increased VEGF-A mRNA levels and protein production in conditionally immortalized wild-type human and murine podocytes. Furthermore, when podocytes were rendered insulin resistant in vitro (using stable short hairpin RNA knockdown of the IR) or in vivo (using transgenic podocyte-specific IR knockout mice), podocyte VEGF-A production was impaired. Importantly, in vivo, this occurs before the development of any podocyte damage due to podocyte insulin resistance. Modulation of VEGF-A by insulin in the podocyte may be another important factor in the development of glomerular disease associated with conditions in which insulin signaling to the podocyte is deranged.
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Affiliation(s)
- L J Hale
- Academic and Children's Renal Unit, University of Bristol, Learning and Research building, Southmead Hospital, Bristol, United Kingdom
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Miyagami S, Koide K, Sekizawa A, Ventura W, Yotsumoto J, Oishi S, Okai T. Physiological changes in the pattern of placental gene expression early in the first trimester. Reprod Sci 2012; 20:710-4. [PMID: 23232967 DOI: 10.1177/1933719112466309] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE To assess the physiological changes in the placental expression pattern of a panel of genes related to angiogenesis and oxidative stress during the early part of the first trimester of pregnancy. METHODS AND RESULTS The expression of a selected panel of genes was quantified by reverse transcriptase-polymerase chain reaction in samples of villous trophoblasts obtained from women between 6 and 11 weeks of gestation undergoing elective artificial abortion. We found that the levels of messenger RNA (mRNA) expression of placental growth factor (PlGF), heme oxygenase 1(HO-1), and superoxide dismutase (SOD) increased significantly with gestational age (r = .37, P = .001; r = .24, P =.04; and r = .52, P < .001, respectively). Conversely, the mRNA expression level of fms-like tyrosine kinase 1 (FLT-1) decreased significantly (r = -.30, P = .009). CONCLUSION During the early part of the first trimester of pregnancy, the placental gene expression levels of PlGF, HO-1, and SOD increase with gestational age, whereas the expression of FLT-1 decreases. The alteration in this pattern of gene expression in early pregnancy may therefore play an important role in placenta-related disorders such as preeclampsia.
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Affiliation(s)
- Satoshi Miyagami
- Department of Obstetrics and Gynecology, Showa University School of Medicine, Tokyo, Japan
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