1
|
Jiang T, Dong Y, Zhu W, Wu T, Chen L, Cao Y, Yu X, Peng Y, Wang L, Xiao Y, Zhong T. Underlying mechanisms and molecular targets of genistein in the management of type 2 diabetes mellitus and related complications. Crit Rev Food Sci Nutr 2023:1-13. [PMID: 37497995 DOI: 10.1080/10408398.2023.2240886] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
Abstract
Diabetes mellitus (DM) is a chronic metabolic disease caused by a complex interaction of genetic and environmental factors and is characterized by persistent hyperglycemia. Long-term hyperglycemia can cause macrovascular and microvascular damage, and compromise the heart, brain, kidney, peripheral nerves, eyes and other organs, leading to serious complications. Genistein, a phytoestrogen derived from soybean, is known for its various biological activities and therapeutic properties. Recent studies found that genistein not only has hypoglycemic activity but can also decrease insulin resistance. In addition, genistein has particular activity in the prevention and treatment of diabetic complications, such as nephropathy, cardiovascular disease, osteoarthrosis, encephalopathy and retinopathy. Therefore, the purpose of this review is to summarize the latest medical research and progress of genistein in DM and related complications and highlights its potential molecular mechanisms and therapeutic targets. Meanwhile, evidence is provided for the development and application of genistein as a potential drug or functional food in the prevention and treatment of diabetes and its related complications.
Collapse
Affiliation(s)
- Tao Jiang
- School of Pharmacy, Faculty of Medicine, Macau University of Science and Technology, Macao SAR, China
- School of Pharmacy and Food Science, Zhuhai College of Science and Technology, Zhuhai, Guangdong, China
| | - Yuhe Dong
- School of Pharmacy, Faculty of Medicine, Macau University of Science and Technology, Macao SAR, China
| | - Wanying Zhu
- Faculty of Chinese Medicine, Macau University of Science and Technology, Macao SAR, China
| | - Tong Wu
- Faculty of Chinese Medicine, Macau University of Science and Technology, Macao SAR, China
| | - Linyan Chen
- Faculty of Medicine, Macau University of Science and Technology, Macao SAR, China
| | - Yuantong Cao
- Faculty of Medicine, Macau University of Science and Technology, Macao SAR, China
| | - Xi Yu
- Faculty of Medicine, Macau University of Science and Technology, Macao SAR, China
| | - Ye Peng
- Faculty of Medicine, Macau University of Science and Technology, Macao SAR, China
| | - Ling Wang
- Faculty of Medicine, Macau University of Science and Technology, Macao SAR, China
| | - Ying Xiao
- Faculty of Medicine, Macau University of Science and Technology, Macao SAR, China
| | - Tian Zhong
- Faculty of Medicine, Macau University of Science and Technology, Macao SAR, China
| |
Collapse
|
2
|
Nassief SM, Amer ME, Shawky E, Sishtla K, Mas-Claret E, Muniyandi A, Corson TW, Mulholland DA, El-Masry S. Antiangiogenic Pterocarpan and Flavonoid Constituents of Erythrina lysistemon. JOURNAL OF NATURAL PRODUCTS 2023; 86:759-766. [PMID: 36938984 DOI: 10.1021/acs.jnatprod.2c00909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The roots of Erythrina lysistemon, growing in Egypt, yielded 24 flavonoid compounds, including 17 pterocarpans, two isoflavanones, one flavanone, two isoflavans, one 2-arylbenzofuran, and an isoflava-3-ene. Nine pterocarpans have not been reported previously (7-9, 11-14, 19, and 20), and 11 are reported here for the first time from this species. Structures were established using HRESIMS, NMR, and circular dichroism techniques. Selected compounds were tested for their ability to block the growth of human retinal endothelial cells and antiangiogenic activity in vitro. The isoflavonoids 5 and 6, and the pterocarpans 1, 2, 4, 20, and 22 demonstrated selective antiproliferative activities on endothelial cells compared to a nonendothelial cell type, with concentration-dependent antiangiogenic effects in vitro against HRECs, a cell type relevant to neovascular eye diseases.
Collapse
Affiliation(s)
- Sarah M Nassief
- Department of Pharmacognosy, Faculty of Pharmacy, University of Alexandria, Alkhartoom Square, Alexandria 21521, Egypt
| | - Masouda E Amer
- Department of Pharmacognosy, Faculty of Pharmacy, University of Alexandria, Alkhartoom Square, Alexandria 21521, Egypt
| | - Eman Shawky
- Department of Pharmacognosy, Faculty of Pharmacy, University of Alexandria, Alkhartoom Square, Alexandria 21521, Egypt
| | - Kamakshi Sishtla
- Eugene and Marilyn Glick Eye Institute, Department of Ophthalmology, Indiana University School of Medicine, 1160 W. Michigan St., Indianapolis, Indiana 46202, United States
| | - Eduard Mas-Claret
- Natural Products Research Group, Department of Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford GU2 7XH, United Kingdom
- Royal Botanic Gardens, Kew, Kew Green, Richmond TW9 3AE, United Kingdom
| | - Anbukkarasi Muniyandi
- Eugene and Marilyn Glick Eye Institute, Department of Ophthalmology, Indiana University School of Medicine, 1160 W. Michigan St., Indianapolis, Indiana 46202, United States
| | - Timothy W Corson
- Eugene and Marilyn Glick Eye Institute, Department of Ophthalmology, Indiana University School of Medicine, 1160 W. Michigan St., Indianapolis, Indiana 46202, United States
- Department of Pharmacology and Toxicology, Indiana University School of Medicine, 1160 West Michigan Street, Indianapolis, Indiana 46202, United States
| | - Dulcie A Mulholland
- Natural Products Research Group, Department of Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - Sawsan El-Masry
- Department of Pharmacognosy, Faculty of Pharmacy, University of Alexandria, Alkhartoom Square, Alexandria 21521, Egypt
| |
Collapse
|
3
|
Nutraceuticals: A Promising Therapeutic Approach in Ophthalmology. Nutrients 2022; 14:nu14235014. [PMID: 36501043 PMCID: PMC9740859 DOI: 10.3390/nu14235014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 11/15/2022] [Accepted: 11/17/2022] [Indexed: 11/27/2022] Open
Abstract
Oxidative stress represents one of the main factors driving the pathophysiology of multiple ophthalmic conditions including presbyopia, cataracts, dry eye disease (DED), glaucoma, age-related macular degeneration (AMD) and diabetic retinopathy (DR). Currently, different studies have demonstrated the role of orally administered nutraceuticals in these diseases. For instance, they have demonstrated to improve lens accommodation in presbyopia, reduce protein aggregation in cataracts, ameliorate tear film stability, break up time, and tear production in dry eye, and participate in the avoidance of retinal neuronal damage and a decrease in intraocular pressure in glaucoma, contribute to the delayed progression of AMD, or in the prevention or treatment of neuronal death in diabetic retinopathy. In this review, we summarized the nutraceuticals which have presented a positive impact in ocular disorders, emphasizing the clinical assays. The characteristics of the different types of nutraceuticals are specified along with the nutraceutical concentration used to achieve a therapeutic outcome in ocular diseases.
Collapse
|
4
|
Yousefi H, Komaki A, Shahidi S, Habibi P, Sadeghian R, Ahmadiasl N, Daghigh F. Diabetic neovascularization defects in the retina are improved by genistein supplementation in the ovariectomized rat. Inflammopharmacology 2021; 29:1579-1586. [PMID: 34581950 DOI: 10.1007/s10787-021-00852-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Accepted: 07/18/2021] [Indexed: 11/28/2022]
Abstract
Genistein seems to have a protective and therapeutic effect on conditions associated with neovascular growth in the retina. This study investigated the angiogenesis, antioxidant, and anti-inflammatory effect of genistein on the retinas in ovariectomized diabetic rats. In this study, 40 female albino Wistar rats were divided into four groups (n = 8 per group): sham, ovariectomized group (OVX), OVX + diabetes (OVX.D), and OVX.D + genistein (OVX.D.G). OVX induced by removal of bilateral ovaries and then high-fat diet (HFD) and a low dose of streptozotocin (STZ) (1 mg/kg; intraperitoneal (IP) injection) was used for diabetes induction (OVX.D) with 8 weeks of genistein treatment (OVX.D.G). At the end of 8 weeks, the retina was removed under anesthesia. The samples were used to measure extracellular signal-regulated kinase (ERK), matrix metalloproteinase 2 (MMP-2), vascular endothelial growth factor (VEGF), and nuclear factor NF-kappa-B (NF-κB) by western blotting and inflammatory factors ELISA and oxidative stress. Measurements of glutathione (GSH) and malondialdehyde (MDA) showed that OVX and especially OVX.D significantly decreased GSH and increased MDA level in the retina, but genistein reversed these effects in OVX.D.G groups. Also, OVX and OVX.D significantly increased VEGF, MMP-2, p-ERK, NF-κB, interleukin-1beta (IL-1β), and tumor necrosis factor alpha (TNFα) expression in the retina of OVX and OVX.D groups in comparison to the sham group (p < 0.05). However, a significant reduction of these proteins was observed in the genistein-treated group (p < 0.05). In conclusion, bilateral ovariectomy and subsequently estrogen deficiency caused the development of inflammation, neovascularization, and then retinopathy in STZ-induced diabetic ovariectomized rats. On the basis of the results, genistein administration may be a practical approach for improving symptoms and complications of ovariectomized diabetic retinopathy.
Collapse
Affiliation(s)
- Hadi Yousefi
- Neurophysiology Research Center, Hamadan University of Medical Sciences, Hamadan, Iran.,Department of Basic Medical Sciences, Khoy University of Medical Sciences, Khoy, Iran
| | - Alireza Komaki
- Neurophysiology Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Siamak Shahidi
- Neurophysiology Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Parisa Habibi
- Neurophysiology Research Center, Hamadan University of Medical Sciences, Hamadan, Iran.
| | - Reihaneh Sadeghian
- Medical Plants Research Center, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Nasser Ahmadiasl
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | |
Collapse
|
5
|
D'Aguanno S, Mallone F, Marenco M, Del Bufalo D, Moramarco A. Hypoxia-dependent drivers of melanoma progression. J Exp Clin Cancer Res 2021; 40:159. [PMID: 33964953 PMCID: PMC8106186 DOI: 10.1186/s13046-021-01926-6] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 03/23/2021] [Indexed: 02/07/2023] Open
Abstract
Hypoxia, a condition of low oxygen availability, is a hallmark of tumour microenvironment and promotes cancer progression and resistance to therapy. Many studies reported the essential role of hypoxia in regulating invasiveness, angiogenesis, vasculogenic mimicry and response to therapy in melanoma. Melanoma is an aggressive cancer originating from melanocytes located in the skin (cutaneous melanoma), in the uveal tract of the eye (uveal melanoma) or in mucosal membranes (mucosal melanoma). These three subtypes of melanoma represent distinct neoplasms in terms of biology, epidemiology, aetiology, molecular profile and clinical features.In this review, the latest progress in hypoxia-regulated pathways involved in the development and progression of all melanoma subtypes were discussed. We also summarized current knowledge on preclinical studies with drugs targeting Hypoxia-Inducible Factor-1, angiogenesis or vasculogenic mimicry. Finally, we described available evidence on clinical studies investigating the use of Hypoxia-Inducible Factor-1 inhibitors or antiangiogenic drugs, alone or in combination with other strategies, in metastatic and adjuvant settings of cutaneous, uveal and mucosal melanoma.Hypoxia-Inducible Factor-independent pathways have been also reported to regulate melanoma progression, but this issue is beyond the scope of this review.As evident from the numerous studies discussed in this review, the increasing knowledge of hypoxia-regulated pathways in melanoma progression and the promising results obtained from novel antiangiogenic therapies, could offer new perspectives in clinical practice in order to improve survival outcomes of melanoma patients.
Collapse
Affiliation(s)
- Simona D'Aguanno
- Preclinical Models and New Therapeutic Agents Unit, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | - Fabiana Mallone
- Department of Sense Organs, Sapienza University of Rome, Rome, Italy
| | - Marco Marenco
- Department of Sense Organs, Sapienza University of Rome, Rome, Italy
| | - Donatella Del Bufalo
- Preclinical Models and New Therapeutic Agents Unit, IRCCS Regina Elena National Cancer Institute, Rome, Italy.
| | | |
Collapse
|
6
|
Multifaceted implementation of nanotechnology in ameliorating therapeutic efficacy of soy phytoestrogens: Comprehensive review on the state of art. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2020.102269] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
7
|
Lecerf JM, Arnoldi A, Rowland I, Trabal J, Widhalm K, Aiking H, Messina M. Soyfoods, glycemic control and diabetes. NUTR CLIN METAB 2020. [DOI: 10.1016/j.nupar.2020.02.437] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
8
|
Haiaty S, Rashidi MR, Akbarzadeh M, Maroufi NF, Yousefi B, Nouri M. Targeting vasculogenic mimicry by phytochemicals: A potential opportunity for cancer therapy. IUBMB Life 2020; 72:825-841. [PMID: 32026601 DOI: 10.1002/iub.2233] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Accepted: 01/06/2020] [Indexed: 12/18/2022]
Abstract
Vasculogenic mimicry (VM) is regarded as a process where very aggressive cancer cells generate vascular-like patterns without the presence of endothelial cells. It is considered as the main mark of malignant cancer and has pivotal role in cancer metastasis and progression in various types of cancers. On the other hand, resistance to the antiangiogenesis therapies leads to the cancer recurrence. Therefore, development of novel chemotherapies and their combinations is urgently needed for abolition of VM structures and also for better tumor therapy. Hence, identifying compounds that target VM structures might be superior therapeutic factors for cancers treatment and controlling the recurrence and metastasis. In recent times, naturally occurring compounds, especially phytochemicals have obtained great attention due to their safe properties. Phytochemicals are also capable of targeting VM structure and also their main signaling pathways. Consequently, in this review article, we illustrated key signaling pathways in VM, and the phytochemicals that affect these structures including curcumin, genistein, lycorine, luteolin, columbamine, triptolide, Paris polyphylla, dehydroeffusol, jatrorrhizine hydrochloride, grape seed proanthocyanidins, resveratrol, isoxanthohumol, dehydrocurvularine, galiellalactone, oxacyclododecindione, brucine, honokiol, ginsenoside Rg3, and norcantharidin. The recognition of these phytochemicals and their safety profile may lead to new therapeutic agents' development for VM elimination in different types of tumors.
Collapse
Affiliation(s)
- Sanya Haiaty
- Stem Cell and Regenerative Medicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Biochemistry and Clinical Laboratories, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad-Reza Rashidi
- Stem Cell and Regenerative Medicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Maryam Akbarzadeh
- Stem Cell and Regenerative Medicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Biochemistry, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Nazila F Maroufi
- Department of Biochemistry and Clinical Laboratories, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Bahman Yousefi
- Department of Biochemistry and Clinical Laboratories, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Nouri
- Stem Cell and Regenerative Medicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Biochemistry and Clinical Laboratories, Tabriz University of Medical Sciences, Tabriz, Iran.,Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| |
Collapse
|
9
|
Li C, Chen R, Xu M, Qiao J, Yan L, Guo XD. Hyaluronic acid modified MPEG-b-PAE block copolymer aqueous micelles for efficient ophthalmic drug delivery of hydrophobic genistein. Drug Deliv 2018; 25:1258-1265. [PMID: 29847210 PMCID: PMC6058726 DOI: 10.1080/10717544.2018.1474972] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
The ophthalmic drug delivery is a challenge in the clinical treatment of ocular diseases. The traditional drug administration usually shows apparent limitations, such as the low bioavailability from the reason of low penetration of the cornea and the short survival time of drug in the eyes. To overcome these shortcomings, we propose an amphiphilic polymer micelle modified with hyaluronic acid (HA) for high efficient ophthalmic delivery of genistein, a widely used hydrophobic drug for treatment of ocular angiogenesis. The MPEG-b-PAE copolymer was synthesized by the Michael addition reaction, and the final drug carrier MPEG-b-PAE-g-HA was obtained by the process of esterification. Then, genistein was packaged in this drug carrier, getting the final micelles with size of about 84.5 nm. The cell viability tests showed that the micelles take no obvious cytotoxicity to the human cornea epithelium cells. The functionalities of drug slow release and cornea penetration ability were demonstrated in a series ex vivo experiments. Further, the vascular inhibition test illustrated that the micelles could significantly inhibit the angiogenesis of human umbilical vein endothelial cells. These results indicate that the constructed polymer has high feasibility to be used as drug carrier in the treatment of ocular diseases.
Collapse
Affiliation(s)
- Cong Li
- a Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering , Beijing University of Chemical Technology , Beijing , China
| | - Rui Chen
- b CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety , National Center for Nanoscience and Technology , Beijing , China.,c Laboratory of Molecular Toxicology, State Key Laboratory of Integrated Management of Pest Insects and Rodents , Institute of Zoology, Chinese Academy of Sciences , Beijing , China
| | - Mengzhen Xu
- b CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety , National Center for Nanoscience and Technology , Beijing , China
| | - Jiyan Qiao
- b CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety , National Center for Nanoscience and Technology , Beijing , China
| | - Liang Yan
- d CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety , Institute of High Energy Physics, Chinese Academy of Sciences , Beijing , China
| | - Xin Dong Guo
- a Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering , Beijing University of Chemical Technology , Beijing , China
| |
Collapse
|
10
|
Ribeiro A, Abreu RM, Dias MM, Barreiro MF, Ferreira IC. Antiangiogenic compounds: well-established drugs versus emerging natural molecules. Cancer Lett 2018; 415:86-105. [DOI: 10.1016/j.canlet.2017.12.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 11/17/2017] [Accepted: 12/01/2017] [Indexed: 12/19/2022]
|
11
|
Homoisoflavonoids as potential antiangiogenic agents for retinal neovascularization. Biomed Pharmacother 2017; 95:818-827. [PMID: 28892793 DOI: 10.1016/j.biopha.2017.09.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Revised: 08/16/2017] [Accepted: 09/03/2017] [Indexed: 11/20/2022] Open
Abstract
A number of people worldwide have been suffering from ocular neovascularization that may be treated by a variety of drugs but these may possess adverse effects. Therefore, small antiangiogenic molecules with higher potency and lower toxic effects are intended. However, homoisoflavonoids of natural origin show the potential antiangiogenic effect in ocular neovascularization. These homoisoflavonoids are judged quantitatively in terms of statistical validation through multi-chemometric modeling approaches for the betterment and refinement of their structures required for higher antiangiogenic activity targeted to ocular neovascularization. These approaches may be utilized to design better antiangiogenic homoisoflavonoids.
Collapse
|
12
|
Sun Q, Heilmann J, König B. Natural phenolic metabolites with anti-angiogenic properties - a review from the chemical point of view. Beilstein J Org Chem 2015; 11:249-64. [PMID: 25815077 PMCID: PMC4361970 DOI: 10.3762/bjoc.11.28] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 01/27/2015] [Indexed: 12/11/2022] Open
Abstract
Considering the many secondary natural metabolites available from plants, phenolic compounds play a particularly important role in human health as they occur in significant amounts in many fruits, vegetables and medicinal plants. In this review natural phenolic compounds of plant origin with significant anti-angiogenic properties are discussed. Thirteen representatives from eight different natural or natural-like phenolic subclasses are presented with an emphasis on their synthesis and methods to modify the parent compounds. When available, the consequence of structural variation on the pharmacological activity of the molecules is described.
Collapse
Affiliation(s)
- Qiu Sun
- Institute of Organic Chemistry, University of Regensburg, Universitätsstr. 31, 93053 Regensburg, Germany
| | - Jörg Heilmann
- Institute of Pharmacy, University of Regensburg, Universitätsstr. 31, 93053 Regensburg, Germany
| | - Burkhard König
- Institute of Organic Chemistry, University of Regensburg, Universitätsstr. 31, 93053 Regensburg, Germany
| |
Collapse
|
13
|
Zhang H, Wang X, Xu K, Wang Y, Wang Y, Liu X, Zhang X, Wang L, Li X. 17β-estradiol ameliorates oxygen-induced retinopathy in the early hyperoxic phase. Biochem Biophys Res Commun 2015; 457:700-5. [PMID: 25619134 DOI: 10.1016/j.bbrc.2015.01.052] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Accepted: 01/13/2015] [Indexed: 01/28/2023]
Abstract
Retinopathy of prematurity (ROP) is a major and leading cause of blindness in premature infants. It has been realized that early treatment for ROP is important. However, all the early treatments of ROP are focusing on peripheral retinal ablation which does not surmount the limit of extinguishing retinal neovascularization and protecting the retinas of children with ROP from the injury of ablation. In this study, we investigated the morphological changes of retina and oxidative stress alterations in the early phase of oxygen-induced retinopathy (OIR) and tested the effects of 17β-estradiol (17β-E2), a nonselective estrogen receptor (ER) agonist, on early phase OIR development. We found that large central capillary-free areas were induced in the retinas of pups exposed to hyperoxia on postnatal day 9 (P9), whereas vascularization was almost complete in the retinas of pups exposed to normoxia at the same age. The concentrations of malondiadehyde (MDA), an end-product of oxidative stress, and nicotinamide adenine dinucleotide phosphate (NADPH) oxidase, a major enzyme producing free radicals, as well as the activity of NADPH oxidase were significantly elevated in the retinas of pups exposed to hyperoxia on P9 and postnatal day 13 (P13) compared to those in age matched pups exposed to normoxia. Treatment with 17β-E2 decreased not only the percentage of the central capillary-free area to total retina area but also the concentrations of MDA and NADPH oxidase as well as the activity of NADPH oxidase in a dose-dependent manner in pups exposed to hyperoxia on p9 and P13. The concentration of VEGF was significantly decreased on P9 but increased on P14 in the retinas of pups exposed to hyperoxia, whereas it was significantly elevated on P9 but decreased on P14 in the retinas of pups treated with 17β-E2. The effect of 17β-E2 could be reversed by the co-treatment with ICI182780, a high affinity estrogen receptor antagonist, which suggested that 17β-E2 might exert its effect on early hyperoxic phase of OIR through estrogen receptor. Our results suggest that treatment with antioxidant drugs at early hyperoxic phase of ROP even before the appearance of retinal neovascularization may be more effective than their application to ROP at late phase, which may abolish the deleterious factors that contribute to retinal neovascularization and promote retinal blood vessels to develop healthily.
Collapse
Affiliation(s)
- Hongbing Zhang
- Eye Institute of Shaanxi Province and Xi'an First Hospital, #30, Fenxiang, Nanda Avenue, Xi'an 710002, PR China.
| | - Xiaodong Wang
- Eye Institute of Shaanxi Province and Xi'an First Hospital, #30, Fenxiang, Nanda Avenue, Xi'an 710002, PR China; Department of Internal Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Kun Xu
- Eye Institute of Shaanxi Province and Xi'an First Hospital, #30, Fenxiang, Nanda Avenue, Xi'an 710002, PR China
| | - Yao Wang
- Eye Institute of Shaanxi Province and Xi'an First Hospital, #30, Fenxiang, Nanda Avenue, Xi'an 710002, PR China
| | - Yani Wang
- Eye Institute of Shaanxi Province and Xi'an First Hospital, #30, Fenxiang, Nanda Avenue, Xi'an 710002, PR China
| | - Xianning Liu
- Eye Institute of Shaanxi Province and Xi'an First Hospital, #30, Fenxiang, Nanda Avenue, Xi'an 710002, PR China
| | - Xianjiao Zhang
- Eye Institute of Shaanxi Province and Xi'an First Hospital, #30, Fenxiang, Nanda Avenue, Xi'an 710002, PR China
| | - Liang Wang
- Eye Institute of Shaanxi Province and Xi'an First Hospital, #30, Fenxiang, Nanda Avenue, Xi'an 710002, PR China
| | - Xiaogang Li
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA; Department of Biochemistry and Molecular Biology, University of Kansas Medical Center, Kansas City, KS 66160, USA.
| |
Collapse
|
14
|
Sulaiman RS, Basavarajappa HD, Corson TW. Natural product inhibitors of ocular angiogenesis. Exp Eye Res 2014; 129:161-71. [PMID: 25304218 DOI: 10.1016/j.exer.2014.10.002] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Revised: 10/03/2014] [Accepted: 10/06/2014] [Indexed: 12/21/2022]
Abstract
Natural products are characterized by high chemical diversity and biochemical specificity; therefore, they are appealing as lead compounds for drug discovery. Given the importance of angiogenesis to many pathologies, numerous natural products have been explored as potential anti-angiogenic drugs. Ocular angiogenesis underlies blinding eye diseases such as retinopathy of prematurity (ROP) in children, proliferative diabetic retinopathy (DR) in adults of working age, and age-related macular degeneration (AMD) in the elderly. Despite the presence of effective therapy in many cases, these diseases are still a significant health burden. Anti-VEGF biologics are the standard of care, but may cause ocular or systemic side effects after intraocular administration and patients may be refractory. Many anti-angiogenic compounds inhibit tumor growth and metastasis alone or in combination therapy, but a more select subset of them has been tested in the context of ocular neovascular diseases. Here, we review the promise of natural products as anti-angiogenic agents, with a specific focus on retinal and choroidal neovascularization. The multifunctional curcumin and the chalcone isoliquiritigenin have demonstrated promising anti-angiogenic effects in mouse models of DR and choroidal neovascularization (CNV) respectively. The homoisoflavanone cremastranone and the flavonoid deguelin have been shown to inhibit ocular neovascularization in more than one disease model. The isoflavone genistein and the flavone apigenin on the other hand are showing potential in the prevention of retinal and choroidal angiogenesis with long-term administration. Many other products with anti-angiogenic potential in vitro such as the lactone withaferin A, the flavonol quercetin, and the stilbenoid combretastatin A4 are awaiting investigation in different ocular disease-relevant animal models. These natural products may serve as lead compounds for the design of more specific, efficacious, and affordable drugs with minimal side effects.
Collapse
Affiliation(s)
- Rania S Sulaiman
- Eugene and Marilyn Glick Eye Institute, Department of Ophthalmology, Indiana University School of Medicine, Indianapolis, IN, United States; Department of Pharmacology and Toxicology, Indiana University School of Medicine, Indianapolis, IN, United States; Department of Biochemistry, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Halesha D Basavarajappa
- Eugene and Marilyn Glick Eye Institute, Department of Ophthalmology, Indiana University School of Medicine, Indianapolis, IN, United States; Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Timothy W Corson
- Eugene and Marilyn Glick Eye Institute, Department of Ophthalmology, Indiana University School of Medicine, Indianapolis, IN, United States; Department of Pharmacology and Toxicology, Indiana University School of Medicine, Indianapolis, IN, United States; Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN, United States; Melvin and Bren Simon Cancer Center, Indiana University School of Medicine, Indianapolis, IN, United States.
| |
Collapse
|
15
|
Aghamohammadi A, Hosseinimehr SJ. Antiangiogenic Agents in Natural Products for the Treatment of Gynecologic Disorders. Nutr Cancer 2014; 66:206-13. [DOI: 10.1080/01635581.2014.865136] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
16
|
Vadlapatla RK, Vadlapudi AD, Mitra AK. Hypoxia-inducible factor-1 (HIF-1): a potential target for intervention in ocular neovascular diseases. Curr Drug Targets 2013; 14:919-35. [PMID: 23701276 DOI: 10.2174/13894501113149990015] [Citation(s) in RCA: 91] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2013] [Accepted: 05/20/2013] [Indexed: 12/29/2022]
Abstract
Constant oxygen supply is essential for proper tissue development, homeostasis and function of all eukaryotic organisms. Cellular response to reduced oxygen levels is mediated by the transcriptional regulator hypoxia-inducible factor-1 (HIF-1). It is a heterodimeric complex protein consisting of an oxygen dependent subunit (HIF-1α) and a constitutively expressed nuclear subunit (HIF-1β). In normoxic conditions, de novo synthesized cytoplasmic HIF-1α is degraded by 26S proteasome. Under hypoxic conditions, HIF-1α is stabilized, binds with HIF-1β and activates transcription of various target genes. These genes play a key role in regulating angiogenesis, cell survival, proliferation, chemotherapy, radiation resistance, invasion, metastasis, genetic instability, immortalization, immune evasion, metabolism and stem cell maintenance. This review highlights the importance of hypoxia signaling in development and progression of various vision threatening pathologies such as diabetic retinopathy, retinopathy of prematurity, age-related macular degeneration and glaucoma. Further, various inhibitors of HIF-1 pathway that may have a viable potential in the treatment of oxygen-dependent ocular diseases are also discussed.
Collapse
Affiliation(s)
- Ramya Krishna Vadlapatla
- Division of Pharmaceutical Sciences, School of Pharmacy, University of Missouri-Kansas City, 2464 Charlotte Street, Kansas City, MO 64108-2718, USA
| | | | | |
Collapse
|
17
|
Bohni N, Cordero-Maldonado ML, Maes J, Siverio-Mota D, Marcourt L, Munck S, Kamuhabwa AR, Moshi MJ, Esguerra CV, de Witte PAM, Crawford AD, Wolfender JL. Integration of Microfractionation, qNMR and zebrafish screening for the in vivo bioassay-guided isolation and quantitative bioactivity analysis of natural products. PLoS One 2013; 8:e64006. [PMID: 23700445 PMCID: PMC3660303 DOI: 10.1371/journal.pone.0064006] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Accepted: 04/09/2013] [Indexed: 12/17/2022] Open
Abstract
Natural products (NPs) are an attractive source of chemical diversity for small-molecule drug discovery. Several challenges nevertheless persist with respect to NP discovery, including the time and effort required for bioassay-guided isolation of bioactive NPs, and the limited biomedical relevance to date of in vitro bioassays used in this context. With regard to bioassays, zebrafish have recently emerged as an effective model system for chemical biology, allowing in vivo high-content screens that are compatible with microgram amounts of compound. For the deconvolution of the complex extracts into their individual constituents, recent progress has been achieved on several fronts as analytical techniques now enable the rapid microfractionation of extracts, and microflow NMR methods have developed to the point of allowing the identification of microgram amounts of NPs. Here we combine advanced analytical methods with high-content screening in zebrafish to create an integrated platform for microgram-scale, in vivo NP discovery. We use this platform for the bioassay-guided fractionation of an East African medicinal plant, Rhynchosia viscosa, resulting in the identification of both known and novel isoflavone derivatives with anti-angiogenic and anti-inflammatory activity. Quantitative microflow NMR is used both to determine the structure of bioactive compounds and to quantify them for direct dose-response experiments at the microgram scale. The key advantages of this approach are (1) the microgram scale at which both biological and analytical experiments can be performed, (2) the speed and the rationality of the bioassay-guided fractionation – generic for NP extracts of diverse origin – that requires only limited sample-specific optimization and (3) the use of microflow NMR for quantification, enabling the identification and dose-response experiments with only tens of micrograms of each compound. This study demonstrates that a complete in vivo bioassay-guided fractionation can be performed with only 20 mg of NP extract within a few days.
Collapse
Affiliation(s)
- Nadine Bohni
- School of Pharmaceutical Sciences, EPGL, University of Geneva, University of Lausanne, Geneva, Switzerland
| | - María Lorena Cordero-Maldonado
- Laboratory for Molecular Biodiscovery, Department of Pharmaceutical and Pharmacological Sciences, University of Leuven, Leuven, Belgium
- Faculty of Chemistry Sciences, School of Biochemistry and Pharmacy, University of Cuenca, Cuenca, Ecuador
| | - Jan Maes
- Laboratory for Molecular Biodiscovery, Department of Pharmaceutical and Pharmacological Sciences, University of Leuven, Leuven, Belgium
| | - Dany Siverio-Mota
- Laboratory for Molecular Biodiscovery, Department of Pharmaceutical and Pharmacological Sciences, University of Leuven, Leuven, Belgium
| | - Laurence Marcourt
- School of Pharmaceutical Sciences, EPGL, University of Geneva, University of Lausanne, Geneva, Switzerland
| | - Sebastian Munck
- VIB Center for the Biology of Disease, University of Leuven, Leuven, Belgium
| | - Appolinary R. Kamuhabwa
- Faculty of Pharmacy, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
| | - Mainen J. Moshi
- Faculty of Pharmacy, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
| | - Camila V. Esguerra
- Laboratory for Molecular Biodiscovery, Department of Pharmaceutical and Pharmacological Sciences, University of Leuven, Leuven, Belgium
| | - Peter A. M. de Witte
- Laboratory for Molecular Biodiscovery, Department of Pharmaceutical and Pharmacological Sciences, University of Leuven, Leuven, Belgium
| | - Alexander D. Crawford
- Laboratory for Molecular Biodiscovery, Department of Pharmaceutical and Pharmacological Sciences, University of Leuven, Leuven, Belgium
- * E-mail:
| | - Jean-Luc Wolfender
- School of Pharmaceutical Sciences, EPGL, University of Geneva, University of Lausanne, Geneva, Switzerland
| |
Collapse
|
18
|
Ma Y, Lovekamp-Swan T, Bekele W, Dohi A, Schreihofer DA. Hypoxia-inducible factor and vascular endothelial growth factor are targets of dietary soy during acute stroke in female rats. Endocrinology 2013; 154:1589-97. [PMID: 23456363 DOI: 10.1210/en.2012-2120] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Dietary soy and soy isoflavones are neuroprotective in experimental cerebral ischemia. Because these isoflavones have estrogenic properties, we hypothesized that, like estrogens, they would inhibit acute vascular injury and the detrimental acute increase in hypoxia-induced vascular endothelial growth factor (VEGF) that leads to cerebral edema after stroke. Mature ovariectomized female Sprague Dawley rats were fed soy-free or soy-containing diets for 4 weeks followed by 90 minutes of transient middle cerebral artery occlusion. Similar to estrogens, dietary soy significantly reduced cerebral edema and vascular apoptosis 24 hours after stroke. Soy also inhibited the ischemia-induced increase in cortical VEGF and VEGF receptor (VEGFR)-2 protein expression observed 4 and 24 hours after stroke, although mRNA levels increased. The reduction in VEGF/VEGFR-2 was associated both with decreases in receptor phosphorylation and signaling to AKT and endothelial nitric oxide synthase. Furthermore degradation of the VEGFR-2 was increased with dietary soy. The primary ischemic stimulus for VEGF, hypoxia-inducible factor 1α (HIF1α), was similarly reduced by dietary soy 4 hours after transient middle cerebral artery occlusion in both the cortex and striatum. The inhibition of HIF1α activity was further confirmed by a significant decrease in the HIF1α-activated apoptotic mediator BCL2/adenovirus E1B 19 kDa protein-interacting protein 3 (Nip3-like protein X). These data suggest that soy isoflavones target events early in the ischemic cascade as part of their neuroprotective actions and counterbalance some of the detrimental effects of the endogenous response to cerebral injury.
Collapse
Affiliation(s)
- Yulin Ma
- Department of Physiology, Medical College of Georgia, Augusta, Georgia 30912, USA
| | | | | | | | | |
Collapse
|
19
|
Kim H, Choi JS, Kim KS, Yang JA, Joo CK, Hahn SK. Flt1 peptide-hyaluronate conjugate micelle-like nanoparticles encapsulating genistein for the treatment of ocular neovascularization. Acta Biomater 2012; 8:3932-40. [PMID: 22824530 DOI: 10.1016/j.actbio.2012.07.016] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2012] [Revised: 06/21/2012] [Accepted: 07/11/2012] [Indexed: 10/28/2022]
Abstract
Flt1 peptide of GNQWFI is an antagonistic peptide for vascular endothelial growth factor receptor 1 (VEGFR1 or Flt1). In this work, Flt1 peptide-hyaluronate (HA) conjugates were successfully synthesized and the resulting micelle-like nanoparticles were exploited to encapsulate genistein, an inhibitor of tyrosine-specific protein kinases, for the treatment of ocular neovascularization. The mean diameter of genistein-loaded Flt1 peptide-HA conjugate micelles was measured to be 172.0±18.7 nm, with a drug-loading efficiency of 40-50%. In vitro release tests of genistein from the genistein-loaded Flt1 peptide-HA conjugate micelles exhibited the controlled release for longer than 24h. In vitro biological activity of genistein/Flt1 peptide-HA micelles was corroborated from the synergistic anti-proliferation of human umbilical vein endothelial cells (HUVECs). Furthermore, we could confirm the anti-angiogenic effect of genistein/Flt1 peptide-HA micelles from the statistically significant suppression of corneal neovascularization in silver nitrate cauterized corneas of SD rats. The retinal vascular hyperpermeability was also drastically reduced by the treatment in diabetic retinopathy model rats.
Collapse
|
20
|
Seng WL, Lin Y, Tang S, Zhong L. Development of a Hypoxia-Induced Zebrafish Choroidal Neovascularization Model. Zebrafish 2011. [DOI: 10.1002/9781118102138.ch16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
|
21
|
Jeong SJ, Koh W, Lee EO, Lee HJ, Lee HJ, Bae H, Lü J, Kim SH. Antiangiogenic phytochemicals and medicinal herbs. Phytother Res 2010; 25:1-10. [DOI: 10.1002/ptr.3224] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
22
|
|
23
|
Krenn L, Paper DH. Inhibition of angiogenesis and inflammation by an extract of red clover (Trifolium pratense L.). PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2009; 16:1083-1088. [PMID: 19665361 DOI: 10.1016/j.phymed.2009.05.017] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2008] [Revised: 05/05/2009] [Accepted: 05/29/2009] [Indexed: 05/28/2023]
Abstract
Antiangiogenic compounds are gaining more and more interest as a new approach in the prevention and treatment of cancer and inflammatory diseases. The objective of this study was the evaluation of the antiangiogenic effect of a red clover extract (RCE) used in food supplements for menopausal complaints as well as of its main isoflavones in an in vivo system, the chorioallantoic membrane assay of fertilized hen's eggs. At a dosage of 250 microg/pellet the red clover extract showed excellent inhibition of angiogenesis. The antiangiogenic activity of the non-methylated isoflavones daidzein and genistein was higher than that of the methylated compounds formononentin and biochanin A. The results demonstrate that RCE is not only suitable for menopausal complaints, but might also be a powerful chemopreventive agent against chronic diseases e.g. which have a high incidence especially in elderly female.
Collapse
Affiliation(s)
- L Krenn
- Department of Anatomy, Chonbuk National University Medical School, Jeonju, Jeonbuk 561-756, Republic of Korea
| | | |
Collapse
|
24
|
Cong R, Sun Q, Yang L, Gu H, Zeng Y, Wang B. Effect of Genistein on vasculogenic mimicry formation by human uveal melanoma cells. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2009; 28:124. [PMID: 19735546 PMCID: PMC2743660 DOI: 10.1186/1756-9966-28-124] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2009] [Accepted: 09/07/2009] [Indexed: 02/07/2023]
Abstract
BACKGROUND Vasculogenic mimicry (VM) was increasingly recognized as a form of aggressive melanoma acquiring blood supply. Genistein had attracted much attention as a potential anticancer agent. Therefore, we examined the effect of Genistein on VM in human uveal melanoma cells. METHODS VM structure was detected by periodic acid-Schiff (PAS) staining for uveal melanoma C918 cells cultured on the three-dimensional type I collagen gels after exposed to Genistein. We used reverse transcription polymerase chain reaction (RT-PCR) and Western Blot analysis to examine the effect of Genistein on vascular endothelial cadherin (VE-cadherin) mRNA and protein expression. The nude mice models of human uveal melanoma C918 cells were established to assess the number of VM using immunohistochemical and PAS double-staining. RESULTS Genistein inhibited the survival of C918 cells in vitro. The ectopic model study showed that VM in tumor tissue sections were significantly reduced by Genistein in vivo. In vitro, the VM structure was found in control, 25 and 50 microM Genistein-treatment groups but not in 100 and 200 microM. RT-PCR and Western Blot showed that 100 and 200 microM concentration of Genistein could significantly decrease VE-cadherin mRNA and protein expression of C918 cells compared with control (P < 0.05). However, the 25 and 50 microM Genistein slightly decreased the VE-cadherin level in vitro (P > 0.05). CONCLUSION Genistein inhibits VM formation of uveal melanoma cells in vivo and in vitro. One possible underlying molecular mechanism by which Genistein could inhibit VM formation of uveal melanoma is related to down-regulation of VE-cadherin.
Collapse
Affiliation(s)
- Rihong Cong
- Department of Pharmacology, Nanjing Medical University, Nanjing, PR China.
| | | | | | | | | | | |
Collapse
|
25
|
Luo H, Jiang BH, King SM, Chen YC. Inhibition of Cell Growth and VEGF Expression in Ovarian Cancer Cells by Flavonoids. Nutr Cancer 2008; 60:800-9. [DOI: 10.1080/01635580802100851] [Citation(s) in RCA: 133] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
|
26
|
Pan JS, Zhu HJ, Zhang B, Li H, Yan H, Wang B. Inhibitive effect of genistein on hypoxia-induced basic fibroblast growth factor expression in human retinal pigment epithelium cells. J Ocul Pharmacol Ther 2006; 22:103-9. [PMID: 16722796 DOI: 10.1089/jop.2006.22.103] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
AIM The time course changes of basic fibroblast growth factor (bFGF) expression induced by hypoxia and the effects of genistein on hypoxia-induced bFGF expression in the human retinal pigment epithelium (RPE) cells were studied. METHODS The bFGF mRNA expression was examined by reverse transcription polymerase chain reaction. The bFGF protein expression was detected by Western blot. RESULTS Hypoxia significantly increased bFGF mRNA expression. The maximal level detected at 24 h was approximately two times that at the start of treatment. With pretreatment of genistein (10, 20, 50, 100, and 200 microM) for 30 min, the elevated expression of bFGF mRNA was suppressed in a concentration-dependent manner. bFGF mRNA expression was reduced to 30.4% by 200 microM of genistein when compared with that untreated with genistein. Hypoxia treatment also remarkably increased the expression of bFGF protein. At 24 h after hypoxia, when the highest expression of bFGF protein was observed, it was approximately two times as much as that at the start of treatment. Genistein (10, 20, 50, 100, and 200 microM) could also suppress bFGF protein expression in a concentration-dependent manner. The highest suppression was observed when exposed to 200 microM of genistein, which was 43% of control. CONCLUSIONS These results suggested that suppression of bFGF expression in RPE cells might partly account for the inhibitive effect of genistein on retinal neovascularization in vivo.
Collapse
Affiliation(s)
- Jin-Shun Pan
- Department of Pharmacology, Nanjing Medical University, Nanjing, People's Republic of China
| | | | | | | | | | | |
Collapse
|
27
|
Lee CC, Chen SC, Tsai SC, Wang BW, Liu YC, Lee HM, Shyu KG. Hyperbaric oxygen induces VEGF expression through ERK, JNK and c-Jun/AP-1 activation in human umbilical vein endothelial cells. J Biomed Sci 2005; 13:143-56. [PMID: 16328781 DOI: 10.1007/s11373-005-9037-7] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2005] [Accepted: 09/15/2005] [Indexed: 10/25/2022] Open
Abstract
Hyperbaric oxygen (HBO) is increasingly used in a number of areas of medical practice, such as selected problem infections and wounds. The beneficial effects of HBO in treating ischemia-related wounds may be mediated by stimulating angiogenesis. We sought to investigate VEGF, the main angiogenic regulator, regulated by HBO in human umbilical vein endothelial cells (HUVECs). In this study, we found that VEGF was up regulated both at mRNA and protein levels in HUVECs treated with HBO dose- and time-dependently. Since there are several AP-1 sites in the VEGF promoter, and the c-Jun/AP-1 is activated through stress-activated protein kinase/c-Jun N-terminal kinase (SAPK/JNK) and extracellular signal regulated kinase (ERK), we further examined the c-Jun, JNK and ERK that might be involved in the VEGF induced by HBO. The VEGF mRNA induced by HBO was blocked by both PD98059 and SP600125, the ERK and JNK inhibitors respectively. HBO induced phospho-ERK and phospho-JNK expressions within 15 min. We further demonstrated that c-Jun phosphorylation was induced within 60 min of HBO treatment. HBO also induced the nuclear AP-1 binding ability within 30-60 min, but the AP-1 induction was blocked by treatment with either the ERK or JNK inhibitor. To verify that the VEGF expression induced by HBO is through the AP-1 trans-activation and VEGF promoter, both the VEGF promoter and AP-1 driving luciferase activity were found increased by the cells treated with HBO. The c-Jun mRNA, which is also driven by AP-1, was also induced by HBO, and the induction of c-Jun was blocked by ERK and JNK inhibitors. We suggest that VEGF induced by HBO is through c-Jun/AP-1 activation, and through simultaneous activation of ERK and JNK pathways.
Collapse
Affiliation(s)
- Chun-Chung Lee
- Department of Medical Education and Research, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
| | | | | | | | | | | | | |
Collapse
|
28
|
Wang B, Zhu H, Sun H, Pan J, Yuan Z, Yu R. Plasma 8-Isoprostane Concentrations in Patients with Age-Related Cataracts. Clin Chem 2005; 51:1541-4. [PMID: 16040854 DOI: 10.1373/clinchem.2005.050955] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Bin Wang
- Department of Pharmacology, School of Basic Medical Science, Nanjing Medical University, Nanjing, China.
| | | | | | | | | | | |
Collapse
|