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Yang Y, Hou G, Ji F, Zhou H, Lv R, Hu C. Maternal Supplementation with Ornithine Promotes Placental Angiogenesis and Improves Intestinal Development of Suckling Piglets. Animals (Basel) 2024; 14:689. [PMID: 38473074 DOI: 10.3390/ani14050689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 02/16/2024] [Accepted: 02/19/2024] [Indexed: 03/14/2024] Open
Abstract
The blood vessels of the placenta are crucial for fetal growth. Here, lower vessel density and ornithine (Orn) content were observed in placentae for low-birth-weight fetuses versus normal-birth-weight fetuses at day 75 of gestation. Furthermore, the Orn content in placentae decreased from day 75 to 110 of gestation. To investigate the role of Orn in placental angiogenesis, 48 gilts (Bama pig) were allocated into four groups. The gilts in the control group were fed a basal diet (CON group), while those in the experimental groups were fed a basal diet supplemented with 0.05% Orn (0.05% Orn group), 0.10% Orn (0.10% Orn group), and 0.15% Orn (0.15% Orn group), respectively. The results showed that 0.15% Orn and 0.10% Orn groups exhibited increased birth weight of piglets compared with the CON group. Moreover, the 0.15% Orn group was higher than the CON group in the blood vessel densities of placenta. Mechanistically, Orn facilitated placental angiogenesis by regulating vascular endothelial growth factor-A (VEGF-A). Furthermore, maternal supplementation with 0.15% Orn during gestation increased the jejunal and ileal villi height and the concentrations of colonic propionate and butyrate in suckling piglets. Collectively, these results showed that maternal supplementation with Orn promotes placental angiogenesis and improves intestinal development of suckling piglets.
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Affiliation(s)
- Yun Yang
- Tropical Crop Genetic Resource Research Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
- College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Guanyu Hou
- Tropical Crop Genetic Resource Research Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
| | - Fengjie Ji
- Tropical Crop Genetic Resource Research Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
| | - Hanlin Zhou
- Tropical Crop Genetic Resource Research Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
| | - Renlong Lv
- Tropical Crop Genetic Resource Research Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
| | - Chengjun Hu
- Tropical Crop Genetic Resource Research Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
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Yang J, Cheng J, Sun B, Li H, Wu S, Dong F, Yan X. Untargeted and stable isotope-assisted metabolomic analysis of MDA-MB-231 cells under hypoxia. Metabolomics 2018; 14:40. [PMID: 30830323 DOI: 10.1007/s11306-018-1338-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Accepted: 02/07/2018] [Indexed: 12/14/2022]
Abstract
INTRODUCTION Hypoxia commonly occurs in cancers and is highly related with the occurrence, development and metastasis of cancer. Treatment of triple negative breast cancer remains challenge. Knowledge about the metabolic status of triple negative breast cancer cell lines in hypoxia is valuable for the understanding of molecular mechanisms of this tumor subtype to develop effective therapeutics. OBJECTIVES Comprehensively characterize the metabolic profiles of triple negative breast cancer cell line MDA-MB-231 in normoxia and hypoxia and the pathways involved in metabolic changes in hypoxia. METHODS Differences in metabolic profiles affected pathways of MDA-MB-231 cells in normoxia and hypoxia were characterized using GC-MS based untargeted and stable isotope assisted metabolomic techniques. RESULTS Thirty-three metabolites were significantly changed in hypoxia and nine pathways were involved. Hypoxia increased glycolysis, inhibited TCA cycle, pentose phosphate pathway and pyruvate carboxylation, while increased glutaminolysis in MDA-MB-231 cells. CONCLUSION The current results provide metabolic differences of MDA-MB-231 cells in normoxia and hypoxia conditions as well as the involved metabolic pathways, demonstrating the power of combined use of untargeted and stable isotope-assisted metabolomic methods in comprehensive metabolomic analysis.
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Affiliation(s)
- Jie Yang
- National Center of Biomedical Analysis, 27 Taiping Road, Beijing, 100039, China
| | - Jianhua Cheng
- National Center of Biomedical Analysis, 27 Taiping Road, Beijing, 100039, China
| | - Bo Sun
- National Center of Biomedical Analysis, 27 Taiping Road, Beijing, 100039, China
| | - Haijing Li
- National Center of Biomedical Analysis, 27 Taiping Road, Beijing, 100039, China
| | - Shengming Wu
- National Center of Biomedical Analysis, 27 Taiping Road, Beijing, 100039, China
| | - Fangting Dong
- National Center of Biomedical Analysis, 27 Taiping Road, Beijing, 100039, China.
| | - Xianzhong Yan
- National Center of Biomedical Analysis, 27 Taiping Road, Beijing, 100039, China.
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Effects of lentivirus-mediated ornithine decarboxylase gene on the proliferation and apoptosis of fibroblast-like synoviocytes in rats with arthritis. Life Sci 2018; 194:224-230. [PMID: 28986097 DOI: 10.1016/j.lfs.2017.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 09/23/2017] [Accepted: 10/02/2017] [Indexed: 11/24/2022]
Abstract
OBJECTIVE This study aimed to explore the effects of lentivirus-mediated ornithine decarboxylase (ODC) gene on the proliferation and apoptosis of fibroblast-like synoviocytes (FLSs) in rats with rheumatoid arthritis (RA). METHODS Twenty Lewis rats were randomized into control group (ten rats without processing) and RA group (ten rats of adjuvant-induced arthritis). The third-generation FLSs were randomized into test, control and blank groups. MTT assay and flow cytometry were employed to detect cell proliferation and apoptosis, respectively. Enzyme-linked immunosorbent assay (ELISA) was used to detect the levels of tumor necrosis factor α (TNF-α), interferon-γ (IFN-γ), and interleukin-2 (IL-2). RESULTS Lewis rats in the RA group became ill from 11days on and got seriously ill 18days after modeling. However, rats in the control group had no obvious change. MTT assay showed that the test group had higher cell proliferation than the blank and control groups (P1<0.001; P2<0.001). Flow cytometry revealed that the apoptosis of FLSs in the test group was significantly lower than that in the blank and control groups (P1<0.001; P2<0.001). ELISA showed that the test group had higher TNF-α, IFN-γ and IL-2 level than the control and blank groups (all P<0.001), but no significant difference was found between the control and blank groups (all P>0.05). CONCLUSION The results indicated that overexpression of ODC gene promotes the proliferation while suppressing apoptosis of FLSs in rats with RA.
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Canseven AG, Esmekaya MA, Kayhan H, Tuysuz MZ, Seyhan N. Effects of microwave exposure and Gemcitabine treatment on apoptotic activity in Burkitt's lymphoma (Raji) cells. Electromagn Biol Med 2014; 34:322-6. [PMID: 24901461 DOI: 10.3109/15368378.2014.919591] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
We investigated the effects of 1.8 MHz Global System for Mobile Communications (GSM)-modulated microwave (MW) radiation on apoptotic level and cell viability of Burkitt's lymphoma (Raji) cells with or without Gemcitabine, which exhibits cell phase specificity, primarily killing cells undergoing DNA synthesis (S-phase). Raji cells were exposed to 1.8 GHz GSM-modulated MW radiation at a specific absorption rate (SAR) of 0.350 W/kg in a CO2 incubator. The duration of the exposure was 24 h. The amount of apoptotic cells was analyzed using Annexin V-FITC and propidium iodide (PI) staining with flow cytometer. The apoptotic activity of MW exposed Raji cells was increased significantly. In addition, cell viability of exposed samples was significantly decreased. Combined exposure of MW and Gemcitabine increased the amount of apoptotic cells than MW radiation alone. Moreover, viability of MW + Gemcitabine exposed cells was lower than that of cells exposed only to MW. These results demonstrated that MW radiation exposure and Gemcitabine treatment have a synergistic effect on apoptotic activity of Raji cells.
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Affiliation(s)
| | | | - Handan Kayhan
- b Department of Internal Medicine, Faculty of Medicine , Gazi University , Ankara , Turkey
| | - Mehmet Zahid Tuysuz
- b Department of Internal Medicine, Faculty of Medicine , Gazi University , Ankara , Turkey
| | - Nesrin Seyhan
- a Department of Biophysics and Division of Hematology and
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Lee MJ, Chen Y, Huang YP, Hsu YC, Chiang LH, Chen TY, Wang GJ. Exogenous polyamines promote osteogenic differentiation by reciprocally regulating osteogenic and adipogenic gene expression. J Cell Biochem 2013; 114:2718-28. [DOI: 10.1002/jcb.24620] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2012] [Accepted: 06/17/2013] [Indexed: 01/08/2023]
Affiliation(s)
- Mon-Juan Lee
- Department of Bioscience Technology; Chang Jung Christian University; Tainan; Taiwan
| | | | - Yuan-Pin Huang
- Department of Cosmetics and Fashion Styling; Cheng Shiu University; Kaohsiung; Taiwan
| | - Yi-Chiang Hsu
- Graduate Institute of Medical Sciences; Chang Jung Christian University; Tainan; Taiwan
| | - Lan-Hsin Chiang
- Department of Bioscience Technology; Chang Jung Christian University; Tainan; Taiwan
| | - Tzu-Yu Chen
- Department of Bioscience Technology; Chang Jung Christian University; Tainan; Taiwan
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Wang W, Xu CX, Hou GS, Chen YG, Xin JX, Liu XX. Downregulation of tumstatin expression by overexpression of ornithine decarboxylase. Oncol Rep 2013; 30:2042-8. [PMID: 24002681 PMCID: PMC3820612 DOI: 10.3892/or.2013.2708] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Accepted: 08/12/2013] [Indexed: 11/05/2022] Open
Abstract
Tumor angiogenesis, a pivotal process for cancer growth and metastasis, requires both upregulation of pro‑angiogenic molecules and downregulation of anti‑angiogenic molecules. Anti-angiogenesis therapy represents a promising way for cancer treatment. Tumstatin, a novel endogenous angiogenesis inhibitor, inhibits endothelial cell proliferation, pathological angiogenesis and tumor growth. Ornithine decarboxylase (ODC), overexpressed in various cancers, is associated with cell transformation, tumor invasion and angiogenesis. We found that the expression of tumstatin was suppressed in ODC-overexpressing human cancer cells and renal carcinoma tissues. We presumed that ODC overexpression may downregulate the expression of tumstatin. To be able to test this hypothesis, we generated HEK293 cells that overexpress ODC (ODC transfectants) and characterized the following experimental groups: PBS-treated group, mock transfectants, ODC transfectants, ODC transfectants transfected with pcDNA-ODCr (an antisense ODC-expressing plasmid) group and putrescine-treated group. The effect of ODC overexpression on tumstatin expression was examined by reverse transcriptase-polymerase chain reaction (RT-PCR), western blot analysis and dual luciferase reporter assay. ODC-overexpressing cells and putrescine-treated cells showed suppressed tumstatin mRNA and protein expression, and decreased tumstatin gene promoter activity. Thus, ODC overexpression suppresses the expression of tumstatin, which may provide fundamental evidence for the combination of anti-angiogenic therapy and conventional therapy for cancer treatment.
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Affiliation(s)
- Wei Wang
- Institute of Biochemistry and Molecular Biology, School of Medicine, Shandong University, Jinan, Shandong 250012, P.R. China
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Zhu Q, Jin L, Casero RA, Davidson NE, Huang Y. Role of ornithine decarboxylase in regulation of estrogen receptor alpha expression and growth in human breast cancer cells. Breast Cancer Res Treat 2012; 136:57-66. [PMID: 22976807 PMCID: PMC3715085 DOI: 10.1007/s10549-012-2235-x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2012] [Accepted: 08/25/2012] [Indexed: 12/30/2022]
Abstract
Our previous studies demonstrated that specific polyamine analogues, oligoamines, down-regulated the activity of a key polyamine biosynthesis enzyme, ornithine decarboxylase (ODC), and suppressed expression of estrogen receptor alpha (ERα) in human breast cancer cells. However, the mechanism underlying the potential regulation of ERα expression by polyamine metabolism has not been explored. Here, we demonstrated that RNAi-mediated knockdown of ODC (ODC KD) down-regulated the polyamine pool, and hindered growth in ERα-positive MCF7 and T47D and ERα-negative MDA-MB-231 breast cancer cells. ODC KD significantly induced the expression and activity of the key polyamine catabolism enzymes, spermine oxidase (SMO) and spermidine/spermine N (1)-acetyltransferase (SSAT). However, ODC KD-induced growth inhibition could not be reversed by exogenous spermidine or overexpression of antizyme inhibitor (AZI), suggesting that regulation of ODC on cell proliferation may involve the signaling pathways independent of polyamine metabolism. In MCF7 and T47D cells, ODC KD, but not DFMO treatment, diminished the mRNA and protein expression of ERα. Overexpression of antizyme (AZ), an ODC inhibitory protein, suppressed ERα expression, suggesting that ODC plays an important role in regulation of ERα expression. Decrease of ERα expression by ODC siRNA altered the mRNA expression of a subset of ERα response genes. Our previous analysis showed that oligoamines disrupt the binding of Sp1 family members to an ERα minimal promoter element containing GC/CA-rich boxes. By using DNA affinity precipitation and mass spectrometry analysis, we identified ZBTB7A, MeCP2, PARP-1, AP2, and MAZ as co-factors of Sp1 family members that are associated with the ERα minimal promoter element. Taken together, these data provide insight into a novel antiestrogenic mechanism for polyamine biosynthesis enzymes in breast cancer.
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Affiliation(s)
- Qingsong Zhu
- The Sidney Kimmel Comprehensive Cancer Center, Johns, Hopkins University, Baltimore, MD, USA
| | - Lihua Jin
- The Sidney Kimmel Comprehensive Cancer Center, Johns, Hopkins University, Baltimore, MD, USA
| | - Robert A. Casero
- The Sidney Kimmel Comprehensive Cancer Center, Johns, Hopkins University, Baltimore, MD, USA
| | - Nancy E. Davidson
- Department of Pharmacology & Chemical Biology, University, of Pittsburgh, Pittsburgh, PA, USA
- University of Pittsburgh Cancer Institute, 5150 Centre Avenue, Suite 500, Pittsburgh, PA 15213, USA,
| | - Yi Huang
- Department of Pharmacology & Chemical Biology, University, of Pittsburgh, Pittsburgh, PA, USA
- University of Pittsburgh Cancer Institute, 5150 Centre Avenue, Suite 500, Pittsburgh, PA 15213, USA,
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Vascular endothelial cadherin is an endostatin receptor. Biologia (Bratisl) 2011. [DOI: 10.2478/s11756-011-0070-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Isobe K, Kuba K, Maejima Y, Suzuki JI, Kubota S, Isobe M. Inhibition of Endostatin/Collagen XVIII Deteriorates Left Ventricular Remodeling and Heart Failure in Rat Myocardial Infarction Model. Circ J 2010; 74:109-19. [DOI: 10.1253/circj.cj-09-0486] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Kazuya Isobe
- Department of Cardiovascular Medicine, Tokyo Medical and Dental University
| | - Keiji Kuba
- Medical Research Institute, MTT Program, Tokyo Medical and Dental University
- Department of Biological Informatics and Experimental Therapeutics, Akita University Graduate School of Medicine
| | - Yasuhiro Maejima
- Department of Cardiovascular Medicine, Tokyo Medical and Dental University
| | - Jun-ichi Suzuki
- Department of Cardiovascular Medicine, Tokyo Medical and Dental University
- Department of Advanced Clinical Science and Therapeutics, Graduate School of Medicine, University of Tokyo
| | - Shunichiro Kubota
- Department of Life Sciences, Graduate School of Arts and Sciences, University of Tokyo
| | - Mitsuaki Isobe
- Department of Cardiovascular Medicine, Tokyo Medical and Dental University
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Li W. Treatment of prostate cancer cells with adenoviral vector-mediated antisense RNA using androgen-dependent and androgen-independent promoters. Med Oncol 2009; 27:519-30. [PMID: 19517275 DOI: 10.1007/s12032-009-9243-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2009] [Accepted: 05/26/2009] [Indexed: 11/25/2022]
Abstract
The present study was designed to develop a novel antisense approach to prostate cancer therapy. We constructed ODC/AdoMetDC double antisense RNA recombinant adenovirus mediated by a prostate-specific androgen-dependent promoter (pADxsi-P2-AdoMetDC-ODC-PolyA) or a prostate-specific androgen-independent promoter (pADxsi-P1-AdoMetDC-ODC-PolyA). Western blot analysis was performed to detect the ODC and AdoMetDC protein levels. The growth curves for each group of cells were determined by MTT assay. Flow cytometry was conducted to detect cell apoptosis, proliferation, and cell cycle distribution in order to demonstrate the effects of the recombinant adenoviruses on the prostate cancer cells. RT-PCR, Western blotting, MTT, and tumor growth inhibition assay in nude mice demonstrated that pADxsi-P1-AdoMetDC-ODC-PolyA and pADxsi-P2-AdoMetDC-ODC-PolyA exhibited inhibitory effects on cell proliferation at both the gene and protein levels. Meanwhile, inhibiting effects of the pADxsi-P2-AdoMetDC-ODC-PolyA is more profound than those of the pADxsi-P1-AdoMetDC-ODC-PolyA vector. Both of the adenoviral vectors exhibited significant inhibitory effects on the growth of prostate tumors, and the inhibitory effects of the pADxsi-P2-AdoMetDC-ODC-PolyA vector were stronger than those of the pADxsi-P1-AdoMetDC-ODC-PolyA vector.
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Affiliation(s)
- Wei Li
- Biomedical Engineering Institution, School of Control Science and Engineering, Shandong University, Jinan, Shandong 250061, China.
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López-García C, López-Contreras AJ, Cremades A, Castells MT, Marín F, Schreiber F, Peñafiel R. Molecular and morphological changes in placenta and embryo development associated with the inhibition of polyamine synthesis during midpregnancy in mice. Endocrinology 2008; 149:5012-23. [PMID: 18583422 DOI: 10.1210/en.2008-0084] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Polyamines play an essential role in murine development, as demonstrated by both gene ablation in ornithine decarboxylase (ODC)-deficient embryos and pharmacological treatments of pregnant mice. However, the molecular and cellular mechanisms by which ODC inhibition affects embryonic development during critical periods of pregnancy are mostly unknown. Our present results demonstrate that the contragestational effect of alpha-difluoromethylornithine (DFMO), a suicide inhibitor of ODC, when given at d 7-9 of pregnancy, is associated with embryo growth arrest and marked alterations in the development of yolk sac and placenta. Blood island formation as well as the transcript levels of embryonary globins alpha-like x chain and beta-like y-chain was markedly decreased in the yolk sac. At the placental level, abnormal chorioallantoic attachment, absence of the spongiotrophoblast layer and a deficient development of the labyrinthine zone were evident. Real-time RT-PCR analysis showed that transcript levels of the steroidogenic genes steroidogenic acute regulatory protein, 3beta-hydroxysteroid dehydrogenase VI, and 17alpha-hydroxylase were markedly decreased by DFMO treatment in the developing placenta at d 9 and 10 of pregnancy. Plasma values of progesterone and androstenedione were also decreased by DFMO treatment. Transcriptomic analysis also detected changes in the expression of several genes involved in placentation and the differentiation of trophoblastic lineages. In conclusion, our results indicate that ODC inhibition at d 8 of pregnancy is related to alterations in yolk sac formation and trophoblast differentiation, affecting processes such as vasculogenesis and steroidogenesis.
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Affiliation(s)
- Carlos López-García
- Department of Biochemistry and Molecular Biology B and Immunology, Faculty of Medicine, University of Murcia, Campus de Espinardo, 30100 Murcia, Spain
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Leong WF, Chow VTK. Transcriptomic and proteomic analyses of rhabdomyosarcoma cells reveal differential cellular gene expression in response to enterovirus 71 infection. Cell Microbiol 2006; 8:565-80. [PMID: 16548883 PMCID: PMC7162300 DOI: 10.1111/j.1462-5822.2005.00644.x] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Insights into the host antiviral strategies as well as viral disease manifestations can be achieved through the elucidation of host- and virus-mediated transcriptional responses. An oligo-based microarray was employed to analyse mRNAs from rhabdomyosarcoma cells infected with the MS/7423/87 strain of enterovirus 71 (EV71) at 20 h post infection. Using Acuity software and LOWESS normalization, 152 genes were found to be downregulated while 39 were upregulated by greater than twofold. Altered transcripts include those encoding components of cytoskeleton, protein translation and modification; cellular transport proteins; protein degradation mediators; cell death mediators; mitochondrial-related and metabolism proteins; cellular receptors and signal transducers. Changes in expression profiles of 15 representative genes were authenticated by real-time reverse transcription polymerase chain reaction (RT-PCR), which also compared the transcriptional responses of cells infected with EV71 strain 5865/Sin/000009 isolated from a fatal case during the Singapore outbreak in 2000. Western blot analyses of APOB, CLU, DCAMKL1 and ODC1 proteins correlated protein and transcript levels. Two-dimensional proteomic maps highlighted differences in expression of cellular proteins (CCT5, CFL1, ENO1, HSPB1, PSMA2 and STMN1) following EV71 infection. Expression of several apoptosis-associated genes was modified, coinciding with apoptosis attenuation observed in poliovirus infection. Interestingly, doublecortin and CaM kinase-like 1 (DCAMKL1) involved in brain development, was highly expressed during infection. Thus, microarray, real-time RT-PCR and proteomic analyses can elucidate the global view of the numerous and complex cellular responses that contribute towards EV71 pathogenesis.
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Affiliation(s)
- Wai Fook Leong
- Human Genome Laboratory, Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Kent Ridge, Singapore 117597
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Takahashi Y, Li L, Kamiryo M, Asteriou T, Moustakas A, Yamashita H, Heldin P. Hyaluronan fragments induce endothelial cell differentiation in a CD44- and CXCL1/GRO1-dependent manner. J Biol Chem 2005; 280:24195-204. [PMID: 15843382 DOI: 10.1074/jbc.m411913200] [Citation(s) in RCA: 100] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Hyaluronan is a glycosaminoglycan of the extracellular matrix. In tumors and during chronic inflammatory diseases, hyaluronan is degraded to smaller fragments, which are known to stimulate endothelial cell differentiation. In this study, we have compared the molecular mechanisms through which hyaluronan dodecasaccharides (HA12), and the known angiogenic factor, fibroblast growth factor 2 (FGF-2), induce capillary endothelial cell sprouting in a three-dimensional collagen gel. The gene expression profiles of unstimulated and HA12- or FGF-2-stimulated endothelial cells were compared using a microarray analysis approach. The data revealed that both FGF-2 and HA12 promoted endothelial cell morphogenesis in a process depending on the expression of ornithine decarboxylase (Odc) and ornithine decarboxylase antizyme inhibitor (Oazi) genes. Among the genes selectively up-regulated in response to HA12 was the chemokine CXCL1/GRO1 gene. The notion that the induction of CXCL1/GRO1 is of importance for HA12-induced endothelial cell sprouting was supported by the fact that morphogenesis was inhibited by antibodies specifically neutralizing the CXCL1/GRO1 protein product. HA12-stimulated endothelial cell differentiation was exerted via binding to CD44 since it was inhibited by antibodies blocking CD44 function. Our data show that hyaluronan fragments and FGF-2 affect endothelial cell morphogenesis by the induction of overlapping but also by distinct sets of genes.
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Affiliation(s)
- Yoshinori Takahashi
- Ludwig Institute for Cancer Research, Box 595, Biomedical Center, Uppsala University, S-751 24 Uppsala, Sweden
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Moehler TM, Ho AD, Goldschmidt H, Barlogie B. Angiogenesis in hematologic malignancies. Crit Rev Oncol Hematol 2003; 45:227-44. [PMID: 12633837 DOI: 10.1016/s1040-8428(02)00135-x] [Citation(s) in RCA: 93] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Angiogenesis is defined as the formation of new capillaries from preexisting blood vessels and plays an important role in the progression of solid tumors. Recently a similar relationship has been described in several hematologic malignancies. Expression of the angiogenic peptides vascular endothelial growth factor (VEGF) and basic fibroblast growth factor correlates with clinical characteristics in leukemia and non-Hodgkin's-lymphoma and the serum/plasma concentrations serve as predictors of poor prognosis. Increased bone marrow microvessels in multiple myeloma (MM) are correlated with decreased overall survival. Thalidomide which has antiangiogenic effects and direct cytotoxic effects was found to be effective in MM, myelodysplastic syndrome and acute myeloid leukemia (AML). Preliminary data indicate activity of VEGF-tyrosine kinase inhibitors in AML. Clinical research is now aimed at testing antiangiogenic treatment strategies in several hematologic neoplasms as well as identifying the best candidate patients for specific approaches.
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Affiliation(s)
- T M Moehler
- Department of Internal Medicine V, University of Heidelberg, Heidelberg, Germany
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Abstract
Antiangiogenic drugs are unique for having highly specific targets while carrying the potential to be effective against a wide variety of tumors. Moreover, some of the major limitations of cytotoxic therapies likely will be avoided by this entirely new class of anticancer weapons. After the realization of the potential advantages of antiangiogenic therapy, the field of angiogenesis research is growing exponentially. Still, there is much to learn about the machinery that tumors use to recruit new blood vessels, and the results of the clinical trials will show the best way to apply that knowledge for cancer therapy.
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MESH Headings
- Angiogenesis Inhibitors/pharmacology
- Angiogenesis Inhibitors/therapeutic use
- Angiostatins
- Animals
- Antibodies, Monoclonal/pharmacology
- Antibodies, Monoclonal/therapeutic use
- Anticarcinogenic Agents/pharmacology
- Anticarcinogenic Agents/therapeutic use
- Cell Hypoxia/physiology
- Child
- Clinical Trials as Topic
- Collagen/physiology
- Cyclooxygenase Inhibitors/pharmacology
- Cyclooxygenase Inhibitors/therapeutic use
- Drug Design
- Endostatins
- Endothelium, Vascular/drug effects
- Endothelium, Vascular/pathology
- Ephrins/physiology
- Growth Substances/physiology
- Humans
- Immunotherapy
- Integrin alphaVbeta3/antagonists & inhibitors
- Integrin alphaVbeta3/physiology
- Ligases/physiology
- Matrix Metalloproteinase Inhibitors
- Matrix Metalloproteinases/physiology
- Mice
- Neoplasm Proteins/antagonists & inhibitors
- Neoplasm Proteins/physiology
- Neoplasms/blood supply
- Neoplasms/drug therapy
- Neovascularization, Pathologic/drug therapy
- Outcome Assessment, Health Care
- Peptide Fragments/physiology
- Plasminogen/physiology
- Protease Inhibitors/pharmacology
- Protease Inhibitors/therapeutic use
- Receptors, Eph Family/antagonists & inhibitors
- Receptors, Eph Family/physiology
- Receptors, Growth Factor/antagonists & inhibitors
- Receptors, Growth Factor/physiology
- Thrombospondins/physiology
- Tumor Suppressor Proteins
- Ubiquitin-Protein Ligases
- Von Hippel-Lindau Tumor Suppressor Protein
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Affiliation(s)
- Kerim Kaban
- Department of Thoracic Head and Neck Medical Oncology, University of Texas M. D. Anderson Cancer Center, Houston, TX 77030, USA
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