201
|
Otterbein LE, Foresti R, Motterlini R. Heme Oxygenase-1 and Carbon Monoxide in the Heart: The Balancing Act Between Danger Signaling and Pro-Survival. Circ Res 2017; 118:1940-1959. [PMID: 27283533 DOI: 10.1161/circresaha.116.306588] [Citation(s) in RCA: 137] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Accepted: 05/02/2016] [Indexed: 12/22/2022]
Abstract
Understanding the processes governing the ability of the heart to repair and regenerate after injury is crucial for developing translational medical solutions. New avenues of exploration include cardiac cell therapy and cellular reprogramming targeting cell death and regeneration. An attractive possibility is the exploitation of cytoprotective genes that exist solely for self-preservation processes and serve to promote and support cell survival. Although the antioxidant and heat-shock proteins are included in this category, one enzyme that has received a great deal of attention as a master protective sentinel is heme oxygenase-1 (HO-1), the rate-limiting step in the catabolism of heme into the bioactive signaling molecules carbon monoxide, biliverdin, and iron. The remarkable cardioprotective effects ascribed to heme oxygenase-1 are best evidenced by its ability to regulate inflammatory processes, cellular signaling, and mitochondrial function ultimately mitigating myocardial tissue injury and the progression of vascular-proliferative disease. We discuss here new insights into the role of heme oxygenase-1 and heme on cardiovascular health, and importantly, how they might be leveraged to promote heart repair after injury.
Collapse
Affiliation(s)
- Leo E Otterbein
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215
| | - Roberta Foresti
- Inserm, U955, Equipe 12, Créteil, 94000, France.,University Paris Est, Faculty of Medicine, Créteil, 94000, France
| | - Roberto Motterlini
- Inserm, U955, Equipe 12, Créteil, 94000, France.,University Paris Est, Faculty of Medicine, Créteil, 94000, France
| |
Collapse
|
202
|
Transforming growth factor β1 enhances heme oxygenase 1 expression in human synovial fibroblasts by inhibiting microRNA 519b synthesis. PLoS One 2017; 12:e0176052. [PMID: 28423042 PMCID: PMC5397058 DOI: 10.1371/journal.pone.0176052] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Accepted: 04/04/2017] [Indexed: 01/15/2023] Open
Abstract
Background Osteoarthritis (OA) is manifested by synovial inflammation and cartilage destruction that is directly linked to synovitis, joint swelling and pain. In the light of the role of synovium in the pathogenesis and the symptoms of OA, synovium-targeted therapy is a promising strategy to mitigate the symptoms and progression of OA. Transforming growth factor beta 1 (TGF-β1), a secreted homodimeric protein, possesses unique and potent anti-inflammatory and immune-regulatory properties in many cell types. Heme oxygenase 1 (HO-1) is an inducible anti-inflammatory and stress responsive enzyme that has been proven to prevent injuries caused by many diseases. Despite the similar anti-inflammatory profile and their involvement in the pathogenesis of arthritic diseases, no studies have as yet explored the possibility of any association between the expression of TGF-β1 and HO-1. Methodology/Principal findings TGF-β1-induced HO-1 expression was examined by HO-1 promoter assay, qPCR, and Western blotting. The siRNAs and enzyme inhibitors were utilized to determine the intermediate involved in the signal transduction pathway. We showed that TGF-β1 stimulated the synthesis of HO-1 in a concentration- and time-dependent manner, which can be mitigated by blockade of the phospholipase (PLC)γ/protein kinase C alpha (PKC)α pathway. We also showed that the expression of miRNA-519b, which blocks HO-1 transcription, is inhibited by TGF-β1, and the suppression of miRNA 519b could be reversed via blockade of the PLCγ/PKCα pathway. Conclusions/Significance TGF-β1 stimulated the expression of HO-1 via activating the PLCγ/PKCα pathway and suppressing the downstream expression of miRNA-519b. These results may shed light on the pathogenesis and treatment of OA.
Collapse
|
203
|
Tang J, Li CM, Li L, Wu J, Wang GL. Changes in expression and production of heme oxygenase-1 in rats with acute liver injury induced by lipopolysaccharide. J Toxicol Sci 2017; 41:469-77. [PMID: 27432233 DOI: 10.2131/jts.41.469] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
To investigate the changes of heme oxygenase-1 (HO-1) expression and production in rats with acute liver injury induced by lipopolysaccharide (LPS), and explore the role of HO-1 in the pathogenesis of liver injury. Liver injury was assessed histologically and the serum level of alanine transaminase (ALT) and aspartate transaminase (AST) were examined. The activity of super oxide dismutase (SOD) and the content of malondialdehyde (MDA) and carbon monoxide (CO) in liver tissues were also examined at the same time. HO-1 mRNA expression was examined at different time points following LPS treatment and the expression of HO-1 protein was determined by immunohistochemical staining. Administration of LPS caused severe hepatic damage, characterized by significant elevation of serum ALT and AST levels and hepatic MDA content as well as a remarkable reduction of liver SOD activity at 24 hr as compared with those in the control group. HO-1 activity was elevated significantly after modeling, showing a time-dependent manner from 6 to 24 hr, while expression of HO-1 protein was increased remarkably from 6 to 24 hr. Endogenous CO concentration in the liver of control rats remained very low but was elevated significantly after LPS treatment (6, 12, 24 hr), which was in accordance with the changes of HO-1. HO-1 activity and protein are increased significantly in rats with acute liver injury induced by LPS, suggesting that HO-1 plays an important role in the pathogenesis of acute hepatic damage.
Collapse
Affiliation(s)
- Juan Tang
- College of Animal Science and Technology, Nanjing Agricultural University, China
| | | | | | | | | |
Collapse
|
204
|
Characteristics of the heme catabolic pathway in mild unconjugated hyperbilirubinemia and their associations with inflammation and disease prevention. Sci Rep 2017; 7:755. [PMID: 28389660 PMCID: PMC5429724 DOI: 10.1038/s41598-017-00933-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 03/17/2017] [Indexed: 01/03/2023] Open
Abstract
Heme catabolism exerts physiological functions that impact health through depressing inflammation. Upon reactive pathway progression, as in Gilbert’s Syndrome (GS; UGT1A1*28 polymorphism), aggravated health effects have been determined. Based on lower inflammation and improved metabolic health reported for GS, inter-group differences in heme catabolism were explored. Therefore, a case-control study including 120 fasted, healthy, age- and gender matched subjects with/without GS, was conducted. Genetic expressions of HMOX-1 and BLVRA were measured. Additionally participants were genotyped for those polymorphisms that are known (UGT1A1*28) or likely (HMOX-1 microsatellites) to impact bilirubinemia. Intracellular interleukins (IL-6, IL-1β, TNFα), circulatory C-reactive protein (CRP), serum amyloid A (SAA) and haptoglobin (Hpt) were analysed as inflammatory markers. To assess intracellular heme oxygenase 1 (HO-1) isolated PBMCs were used. In GS vs. C, inflammation markers were significantly decreased. This was supported by an altered heme catabolism, indirectly reflecting in elevated unconjugated bilirubin (UCB; main phenotypic feature of GS) and iron, decreased hemopexin (Hpx) and Hpt and in up-regulated biliverdin reductase (BLVRA) gene expressions. Moreover, HMOX (GT)n short alleles were non-significantly more prominent in female GS individuals. Herewith, we propose a concept to elucidate why GS individuals encounter lower inflammation, and are thus less prone to oxidative-stress mediated diseases.
Collapse
|
205
|
Effects of Light-Emitting Diode Irradiation on Growth Characteristics and Regulation of Porphyrin Biosynthesis in Rice Seedlings. Int J Mol Sci 2017; 18:ijms18030641. [PMID: 28300754 PMCID: PMC5372653 DOI: 10.3390/ijms18030641] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 03/09/2017] [Accepted: 03/13/2017] [Indexed: 11/12/2022] Open
Abstract
We examined the effects of light quality on growth characteristics and porphyrin biosynthesis of rice seedlings grown under different wavelengths from light emitting diodes (LEDs). After 10 days of exposure to various wavelengths of LEDs, leaf area and shoot biomass were greater in seedlings grown under white and blue LEDs than those of green and red LEDs. Both green and red LED treatments drastically decreased levels of protoporphyrin IX (Proto IX) and Mg-porphyrins compared to those of white LED, while levels of Mg-Proto IX monomethyl ester and protochlorophyllide under blue LED were decreased by 21% and 49%, respectively. Transcript levels of PPO1 were greatly upregulated in seedlings grown under red LED compared to white LED, whereas transcript levels of HO2 and CHLD were upregulated under blue LED. Overall, most porphyrin biosynthetic genes in the Fe-porphyrin branch remained almost constant or upregulated, while most genes in the Mg-porphyrin branch were downregulated. Expression levels of nuclear-encoded photosynthetic genes Lhcb and RbcS noticeably decreased after exposure to blue and red LEDs, compared to white LED. Our study suggests that specific wavelengths of LED greatly influence characteristics of growth in plants partly through altering the metabolic regulation of the porphyrin biosynthetic pathway, and possibly contribute to affect retrograde signaling.
Collapse
|
206
|
Role of Gasotransmitters in Oxidative Stresses, Neuroinflammation, and Neuronal Repair. BIOMED RESEARCH INTERNATIONAL 2017; 2017:1689341. [PMID: 28386548 PMCID: PMC5366188 DOI: 10.1155/2017/1689341] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 01/12/2017] [Accepted: 02/07/2017] [Indexed: 12/21/2022]
Abstract
To date, three main gasotransmitters, that is, hydrogen sulfide (H2S), carbon monoxide (CO), and nitric oxide (NO), have been discovered to play major bodily physiological roles. These gasotransmitters have multiple functional roles in the body including physiologic and pathologic functions with respect to the cellular or tissue quantities of these gases. Gasotransmitters were originally known to have only detrimental and noxious effects in the body but that notion has much changed with years; vast studies demonstrated that these gasotransmitters are precisely involved in the normal physiological functioning of the body. From neuromodulation, oxidative stress subjugation, and cardiovascular tone regulation to immunomodulation, these gases perform critical roles, which, should they deviate from the norm, can trigger the genesis of a number of neurodegenerative diseases such as Alzheimer's disease (AD) and Parkinson's disease (PD). The purpose of this review is to discuss at great length physical and chemical properties and physiological actions of H2S, NO, and CO as well as shedding light on recently researched molecular targets. We particularly put emphasis on the roles in neuronal inflammation and neurodegeneration and neuronal repair.
Collapse
|
207
|
Dimethyl fumarate accelerates peripheral nerve regeneration via activation of the anti-inflammatory and cytoprotective Nrf2/HO-1 signaling pathway. Acta Neuropathol 2017; 133:489-491. [PMID: 28108787 DOI: 10.1007/s00401-017-1676-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 12/13/2016] [Accepted: 01/12/2017] [Indexed: 10/20/2022]
|
208
|
Moon SJ, Kim EK, Jhun JY, Lee HJ, Lee WS, Park SH, Cho ML, Min JK. The active metabolite of leflunomide, A77 1726, attenuates inflammatory arthritis in mice with spontaneous arthritis via induction of heme oxygenase-1. J Transl Med 2017; 15:31. [PMID: 28193225 PMCID: PMC5304395 DOI: 10.1186/s12967-017-1131-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 02/03/2017] [Indexed: 01/01/2023] Open
Abstract
Background Leflunomide is a low-molecular-weight compound that is widely used in the treatment of rheumatoid arthritis. Although leflunomide is thought to act through the inhibition of the de novo pyrimidine synthesis, the molecular mechanism of the drug remains largely unknown. We investigated the antiarthritis effects and mechanisms of action of the active metabolite of leflunomide, A77 1726, in interleukin-1 receptor antagonist-knockout (IL-1Ra-KO) mice. Methods 14- to 15-week-old male IL-1Ra-KO mice were treated with 10 or 30 mg/kg A77 1726 via intraperitoneal injection three times per week for 6 weeks. The effects of A77 1726 on arthritis severities were assessed by clinical scoring and histological analysis. The serum concentrations of IL-1β, tumor necrosis factor-α (TNF-α), and malondialdehyde were measured by enzyme-linked immunosorbent assay. Histologic analysis of the joints was performed using Safranin O, and immunohistochemical staining. The frequencies of interleukin-17-producing CD4+ T (Th17) cells were analyzed by flow cytometry. Heme oxygenase-1 (HO-1) expression in splenic CD4+ T cells isolated from A77 1726-treated arthritis mice were assessed by western blotting. Results A77 1726 treatment induced heme oxygenase-1 (HO-1) in Jurkat cells and primary mouse T cells. Interestingly, A77 1726 inhibited Th17 cell differentiation. In vivo, A77 1726 reduced the clinical arthritis severity of histological inflammation and cartilage destruction. The joints isolated from A77 1726-treated mice showed decreased expression of inducible nitric oxide synthase, nitrotyrosine, TNF-α, and IL-1β. The serum levels of TNF-α, IL-1β, and malondialdehyde were also decreased in A77 1726-treated mice. Whereas the number of Th17 cells in spleens was decreased in A77 1726-treated arthritis mice, a significant increase in the number of Treg cells in spleens was observed. Interestingly, HO-1 expression was significantly higher in splenic CD4+ T cells isolated from A77 1726-treated mice compared with those from vehicle-treated mice, whereas HO-1 expression of splenic non-CD4+ T cells did not differ between groups. Conclusion The inhibitory effects of A77 1726 on joint inflammation and oxidative stress in autoimmune arthritis may be associated with HO-1 induction in CD4+ T cells.
Collapse
Affiliation(s)
- Su-Jin Moon
- Division of Rheumatology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Eun-Kyung Kim
- The Rheumatism Research Center, Catholic Research Institute of Medical Science, The Catholic University of Korea, Seoul, South Korea
| | - Joo Yeon Jhun
- The Rheumatism Research Center, Catholic Research Institute of Medical Science, The Catholic University of Korea, Seoul, South Korea
| | - Hee Jin Lee
- Clinical Medicine Research Institute of Bucheon St. Mary's Hospital, The Catholic University of Korea, Bucheon-si, Gyeonggi-do, South Korea
| | - Weon Sun Lee
- Clinical Medicine Research Institute of Bucheon St. Mary's Hospital, The Catholic University of Korea, Bucheon-si, Gyeonggi-do, South Korea
| | - Sang-Hi Park
- Clinical Medicine Research Institute of Bucheon St. Mary's Hospital, The Catholic University of Korea, Bucheon-si, Gyeonggi-do, South Korea
| | - Mi-La Cho
- The Rheumatism Research Center, Catholic Research Institute of Medical Science, The Catholic University of Korea, Seoul, South Korea
| | - Jun-Ki Min
- Division of Rheumatology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, South Korea.
| |
Collapse
|
209
|
Wang W, Tabu K, Hagiya Y, Sugiyama Y, Kokubu Y, Murota Y, Ogura SI, Taga T. Enhancement of 5-aminolevulinic acid-based fluorescence detection of side population-defined glioma stem cells by iron chelation. Sci Rep 2017; 7:42070. [PMID: 28169355 PMCID: PMC5294410 DOI: 10.1038/srep42070] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Accepted: 01/05/2017] [Indexed: 01/20/2023] Open
Abstract
Cancer stem cells (CSCs) are dominantly responsible for tumor progression and chemo/radio-resistance, resulting in tumor recurrence. 5-aminolevulinic acid (ALA) is metabolized to fluorescent protoporphyrin IX (PpIX) specifically in tumor cells, and therefore clinically used as a reagent for photodynamic diagnosis (PDD) and therapy (PDT) of cancers including gliomas. However, it remains to be clarified whether this method could be effective for CSC detection. Here, using flow cytometry-based analysis, we show that side population (SP)-defined C6 glioma CSCs (GSCs) displayed much less 5-ALA-derived PpIX fluorescence than non-GSCs. Among the C6 GSCs, cells with ultralow PpIX fluorescence exhibited dramatically higher tumorigenicity when transplanted into the immune-deficient mouse brain. We further demonstrated that the low PpIX accumulation in the C6 GSCs was enhanced by deferoxamine (DFO)-mediated iron chelation, not by reserpine-mediated inhibition of PpIX-effluxing ABCG2. Finally, we found that the expression level of the gene for heme oxygenase-1 (HO-1), a heme degradation enzyme, was high in C6 GSCs, which was further up-regulated when treated with 5-ALA. Our results provide important new insights into 5-ALA-based PDD of gliomas, particularly photodetection of SP-defined GSCs by iron chelation based on their ALA-PpIX-Heme metabolism.
Collapse
Affiliation(s)
- Wenqian Wang
- Department of Stem Cell Regulation, Medical Research Institute, Tokyo Medical and Dental University (TMDU), Bunkyo-ku, Tokyo, 1138510, Japan
| | - Kouichi Tabu
- Department of Stem Cell Regulation, Medical Research Institute, Tokyo Medical and Dental University (TMDU), Bunkyo-ku, Tokyo, 1138510, Japan
| | - Yuichiro Hagiya
- Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, 4259-B102, Nagatsuta-cho, Midori-ku, Yokohama, 2268501, Japan
| | - Yuta Sugiyama
- Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, 4259-B102, Nagatsuta-cho, Midori-ku, Yokohama, 2268501, Japan
| | - Yasuhiro Kokubu
- Department of Stem Cell Regulation, Medical Research Institute, Tokyo Medical and Dental University (TMDU), Bunkyo-ku, Tokyo, 1138510, Japan
| | - Yoshitaka Murota
- Department of Stem Cell Regulation, Medical Research Institute, Tokyo Medical and Dental University (TMDU), Bunkyo-ku, Tokyo, 1138510, Japan
| | - Shun-ichiro Ogura
- Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, 4259-B102, Nagatsuta-cho, Midori-ku, Yokohama, 2268501, Japan
- School of Life Science and Technology, Tokyo Institute of Technology, 4259 B-47, Nagatsuta-cho, Midori-ku, Yokohama, 2268501, Japan
| | - Tetsuya Taga
- Department of Stem Cell Regulation, Medical Research Institute, Tokyo Medical and Dental University (TMDU), Bunkyo-ku, Tokyo, 1138510, Japan
| |
Collapse
|
210
|
Ben-Mordechai T, Kain D, Holbova R, Landa N, Levin LP, Elron-Gross I, Glucksam-Galnoy Y, Feinberg MS, Margalit R, Leor J. Targeting and modulating infarct macrophages with hemin formulated in designed lipid-based particles improves cardiac remodeling and function. J Control Release 2017; 257:21-31. [PMID: 28065861 DOI: 10.1016/j.jconrel.2017.01.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 12/28/2016] [Accepted: 01/02/2017] [Indexed: 12/11/2022]
Abstract
Uncontrolled activation of pro-inflammatory macrophages after myocardial infarction (MI) accelerates adverse left ventricular (LV) remodeling and dysfunction. Hemin, an iron-containing porphyrin, activates heme oxygenase-1 (HO-1), an enzyme with anti-inflammatory and cytoprotective properties. We sought to determine the effects of hemin formulated in a macrophage-targeted lipid-based carrier (denoted HA-LP) on LV remodeling and function after MI. Hemin encapsulation efficiency was ~100% at therapeutic dose levels. In vitro, hemin/HA-LP abolished TNF-α secretion from macrophages, whereas the same doses of free hemin and drug free HA-LP had no effect. Hemin/HA-LP polarized peritoneal and splenic macrophages toward M2 anti-inflammatory phenotype. We next induced MI in mice and allocated them to IV treatment with hemin/HA-LP (10mg/kg), drug free HA-LP, free hemin (10mg/kg) or saline, one day after MI. Active in vivo targeting to infarct macrophages was confirmed with HA-LP doped with PE-rhodamine. LV remodeling and function were assessed by echocardiography before, 7, and 30days after treatment. Significantly, hemin/HA-LP effectively and specifically targets infarct macrophages, switches infarct macrophages toward M2 anti-inflammatory phenotype, improves angiogenesis, reduces scar expansion and improves infarct-related regional function. In conclusion, macrophage-targeted lipid-based drug carriers with hemin switch macrophages into an anti-inflammatory phenotype, and improve infarct healing and repair. Our approach presents a novel strategy to modulate inflammation and improve infarct repair.
Collapse
Affiliation(s)
- Tamar Ben-Mordechai
- Sackler Faculty of Medicine, Neufeld Cardiac Research Institute, Tel Aviv University, Tel Aviv, Israel; Tamman Cardiovascular Research Institute, Leviev Heart Center, Sheba Medical Center, Tel-hashomer, Israel; Sheba Center for Regenerative Medicine, Stem Cell, and Tissue Engineering, Tel-Hashomer, Israel
| | - David Kain
- Sackler Faculty of Medicine, Neufeld Cardiac Research Institute, Tel Aviv University, Tel Aviv, Israel; Tamman Cardiovascular Research Institute, Leviev Heart Center, Sheba Medical Center, Tel-hashomer, Israel; Sheba Center for Regenerative Medicine, Stem Cell, and Tissue Engineering, Tel-Hashomer, Israel
| | - Radka Holbova
- Sackler Faculty of Medicine, Neufeld Cardiac Research Institute, Tel Aviv University, Tel Aviv, Israel; Tamman Cardiovascular Research Institute, Leviev Heart Center, Sheba Medical Center, Tel-hashomer, Israel; Sheba Center for Regenerative Medicine, Stem Cell, and Tissue Engineering, Tel-Hashomer, Israel
| | - Natalie Landa
- Sackler Faculty of Medicine, Neufeld Cardiac Research Institute, Tel Aviv University, Tel Aviv, Israel; Tamman Cardiovascular Research Institute, Leviev Heart Center, Sheba Medical Center, Tel-hashomer, Israel; Sheba Center for Regenerative Medicine, Stem Cell, and Tissue Engineering, Tel-Hashomer, Israel
| | - La-Paz Levin
- Sackler Faculty of Medicine, Neufeld Cardiac Research Institute, Tel Aviv University, Tel Aviv, Israel; Tamman Cardiovascular Research Institute, Leviev Heart Center, Sheba Medical Center, Tel-hashomer, Israel; Sheba Center for Regenerative Medicine, Stem Cell, and Tissue Engineering, Tel-Hashomer, Israel
| | - Inbar Elron-Gross
- Department of Biochemistry and Molecular Biology, The George S. Wise, Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Yifat Glucksam-Galnoy
- Department of Biochemistry and Molecular Biology, The George S. Wise, Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Micha S Feinberg
- Sackler Faculty of Medicine, Neufeld Cardiac Research Institute, Tel Aviv University, Tel Aviv, Israel; Tamman Cardiovascular Research Institute, Leviev Heart Center, Sheba Medical Center, Tel-hashomer, Israel
| | - Rimona Margalit
- Department of Biochemistry and Molecular Biology, The George S. Wise, Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Jonathan Leor
- Sackler Faculty of Medicine, Neufeld Cardiac Research Institute, Tel Aviv University, Tel Aviv, Israel; Tamman Cardiovascular Research Institute, Leviev Heart Center, Sheba Medical Center, Tel-hashomer, Israel; Sheba Center for Regenerative Medicine, Stem Cell, and Tissue Engineering, Tel-Hashomer, Israel.
| |
Collapse
|
211
|
Panka BA, de Grooth HJ, Spoelstra-de Man AME, Looney MR, Tuinman PR. Prevention or Treatment of Ards With Aspirin: A Review of Preclinical Models and Meta-Analysis of Clinical Studies. Shock 2017; 47:13-21. [PMID: 27984533 PMCID: PMC5175412 DOI: 10.1097/shk.0000000000000745] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
BACKGROUND The acute respiratory distress syndrome (ARDS) is a life-threating disorder that contributes significantly to critical illness. No specific pharmacological interventions directed at lung injury itself have proven effective in improving outcome of patients with ARDS. Platelet activation was identified as a key component in ARDS pathophysiology and may provide an opportunity for preventive and therapeutic strategies. We hypothesize that use of acetyl salicylic acid (ASA) may prevent and/or attenuate lung injury. METHODS We conducted a systematic review of preclinical studies and meta-analysis of clinical studies investigating the efficacy of ASA in the setting of lung injury. Medline, embase, and cochrane databases were searched. RESULTS The literature search yielded 1,314 unique articles. Fifteen preclinical studies and eight clinical studies fulfilled the in- and exclusion criteria. In the animal studies, the overall effect of ASA was positive, e.g., ASA improved survival and attenuated inflammation and pulmonary edema. Mechanisms of actions involved, among others, are interference with the neutrophil-platelets interaction, reduction of leukotrienes, neutrophil extracellular traps, and prostaglandins. High-dose ASA may be the drug of choice. A meta-analysis of three clinical studies showed an association between ASA use and a reduced incidence of ARDS (OR 0.59, 95% CI 0.36-0.98), albeit with substantial between-study heterogeneity. All studies had their own shortcomings in methodological quality. CONCLUSION This systematic review of preclinical studies and meta-analysis of clinical studies suggests a beneficial role for ASA in ARDS prevention and treatment. However, the currently available data is insufficient to justify an indication for ASA in ARDS. The body of literature does support further studies in humans. We suggest clinical trials in which the mechanisms of action of ASA in lung injury models are being evaluated to guide optimal timing and dose, before prospective randomized trials.
Collapse
Affiliation(s)
- Bernardo Amisa Panka
- *Department of Intensive Care Medicine, VU University Medical Centre, Amsterdam, The Netherlands †Department of Intensive Care Medicine, s' Lands Hospitaal Paramaribo, Paramaribo, Suriname ‡Research VUmc Intensive Care (REVIVE) and Institute for Cardiovascular Research (ICAR-VU), Amsterdam, The Netherlands §Department of Medicine, University of California, San Francisco; San Francisco, California
| | | | | | | | | |
Collapse
|
212
|
Heme oxygenase-1 in the forefront of a multi-molecular network that governs cell-cell contacts and filopodia-induced zippering in prostate cancer. Cell Death Dis 2016; 7:e2570. [PMID: 28032857 PMCID: PMC5261017 DOI: 10.1038/cddis.2016.420] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 11/11/2016] [Indexed: 01/02/2023]
Abstract
Prostate cancer (PCa) cells display abnormal expression of cytoskeletal proteins resulting in an augmented capacity to resist chemotherapy and colonize distant organs. We have previously shown that heme oxygenase 1 (HO-1) is implicated in cell morphology regulation in PCa. Here, through a multi 'omics' approach we define the HO-1 interactome in PCa, identifying HO-1 molecular partners associated with the integrity of the cellular cytoskeleton. The bioinformatics screening for these cytoskeletal-related partners reveal that they are highly misregulated in prostate adenocarcinoma compared with normal prostate tissue. Under HO-1 induction, PCa cells present reduced frequency in migration events, trajectory and cell velocity and, a significant higher proportion of filopodia-like protrusions favoring zippering among neighboring cells. Moreover forced expression of HO-1 was also capable of altering cell protrusions in transwell co-culture systems of PCa cells with MC3T3 cells (pre-osteoblastic cell line). Accordingly, these effects were reversed under siHO. Transcriptomics profiling evidenced significant modulation of key markers related to cell adhesion and cell–cell communication under HO-1 induction. The integration from our omics-based research provides a four molecular pathway foundation (ANXA2/HMGA1/POU3F1; NFRSF13/GSN; TMOD3/RAI14/VWF; and PLAT/PLAU) behind HO-1 regulation of tumor cytoskeletal cell compartments. The complementary proteomics and transcriptomics approaches presented here promise to move us closer to unravel the molecular framework underpinning HO-1 involvement in the modulation of cytoskeleton pathways, pushing toward a less aggressive phenotype in PCa.
Collapse
|
213
|
Microbial Translocation Associated with an Acute-Phase Response and Elevations in MMP-1, HO-1, and Proinflammatory Cytokines in Strongyloides stercoralis Infection. Infect Immun 2016; 85:IAI.00772-16. [PMID: 27821584 DOI: 10.1128/iai.00772-16] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Accepted: 10/31/2016] [Indexed: 12/25/2022] Open
Abstract
Microbial translocation, characterized by elevated levels of lipopolysaccharide (LPS) and related markers, is a common occurrence in HIV and some parasitic infections. This is usually associated with extensive inflammation and immune activation. To examine the occurrence of microbial translocation and the associated inflammatory response in asymptomatic Strongyloides stercoralis infection, we measured the plasma levels of LPS and other microbial translocation markers, acute-phase proteins, inflammatory markers, and proinflammatory cytokines in individuals with (infected [INF]) or without (uninfected [UN]) S. stercoralis infections. Finally, we also measured the levels of all of these markers in INF individuals following treatment of S. stercoralis infection. We show that INF individuals exhibit significantly higher plasma levels of microbial translocation markers (LPS, soluble CD14 [sCD14], intestinal fatty acid-binding protein [iFABP], and endotoxin core IgG antibody [EndoCAb]), acute-phase proteins (α-2 macroglobulin [α-2M], C-reactive protein [CRP], haptoglobin, and serum amyloid protein A [SAA]), inflammatory markers (matrix metalloproteinase 1 [MMP-1] and heme oxygenase 1 [HO-1]), and proinflammatory cytokines (interleukin-6 [IL-6], IL-8, monocyte chemoattractant protein 1 [MCP-1], and IL-1β) than do UN individuals. INF individuals exhibit significantly decreased levels of tissue inhibitor of metalloproteinases 4 (TIMP-4). Following treatment of S. stercoralis infection, the elevated levels of microbial translocation markers, acute-phase proteins, and inflammatory markers were all diminished. Our data thus show that S. stercoralis infection is characterized by microbial translocation and accompanying increases in levels of acute-phase proteins and markers of inflammation and provide data to suggest that microbial translocation is a feature of asymptomatic S. stercoralis infection and is associated with an inflammatory response.
Collapse
|
214
|
Roubalová L, Biedermann D, Papoušková B, Vacek J, Kuzma M, Křen V, Ulrichová J, Dinkova-Kostova AT, Vrba J. Semisynthetic flavonoid 7-O-galloylquercetin activates Nrf2 and induces Nrf2-dependent gene expression in RAW264.7 and Hepa1c1c7 cells. Chem Biol Interact 2016; 260:58-66. [PMID: 27777014 PMCID: PMC5148792 DOI: 10.1016/j.cbi.2016.10.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 10/06/2016] [Accepted: 10/19/2016] [Indexed: 01/06/2023]
Abstract
The natural flavonoid quercetin is known to activate the transcription factor Nrf2, which regulates the expression of cytoprotective enzymes such as heme oxygenase-1 (HO-1) and NAD(P)H:quinone oxidoreductase 1 (NQO1). In this study, a novel semisynthetic flavonoid 7-O-galloylquercetin (or quercetin-7-gallate, 3) was prepared by direct galloylation of quercetin, and its effect on the Nrf2 pathway was examined. A luciferase reporter assay showed that 7-O-galloylquercetin, like quercetin, significantly activated transcription via the antioxidant response element in a stably transfected human AREc32 reporter cell line. In addition, 7-O-galloylquercetin caused the accumulation of Nrf2 and induced the expression of HO-1 at both the mRNA and protein levels in murine macrophage RAW264.7 cells. The induction of HO-1 by 7-O-galloylquercetin was significantly suppressed by N-acetyl-l-cysteine and SB203580, indicating the involvement of reactive oxygen species and p38 mitogen-activated protein kinase activity, respectively. HPLC/MS analyses also showed that 7-O-galloylquercetin was not degalloylated to quercetin, but it was conjugated with glucuronic acid and/or methylated in RAW264.7 cells. Furthermore, 7-O-galloylquercetin was found to increase the protein levels of Nrf2 and HO-1, and also the activity of NQO1 in murine hepatoma Hepa1c1c7 cells. Taken together, we conclude that 7-O-galloylquercetin increases Nrf2 activity and induces Nrf2-dependent gene expression in RAW264.7 and Hepa1c1c7 cells.
Collapse
Affiliation(s)
- Lenka Roubalová
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, Olomouc 77515, Czech Republic; Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, Olomouc 77515, Czech Republic
| | - David Biedermann
- Institute of Microbiology, Laboratory of Biotransformation, Czech Academy of Sciences, Vídeňská 1083, Prague 14220, Czech Republic
| | - Barbora Papoušková
- Regional Centre of Advanced Technologies and Materials, Department of Analytical Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, Olomouc 77146, Czech Republic
| | - Jan Vacek
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, Olomouc 77515, Czech Republic
| | - Marek Kuzma
- Institute of Microbiology, Laboratory of Biotransformation, Czech Academy of Sciences, Vídeňská 1083, Prague 14220, Czech Republic
| | - Vladimír Křen
- Institute of Microbiology, Laboratory of Biotransformation, Czech Academy of Sciences, Vídeňská 1083, Prague 14220, Czech Republic
| | - Jitka Ulrichová
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, Olomouc 77515, Czech Republic; Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, Olomouc 77515, Czech Republic
| | - Albena T Dinkova-Kostova
- Jacqui Wood Cancer Centre, Division of Cancer Research, School of Medicine, University of Dundee, Dundee DD1 9SY, Scotland, UK
| | - Jiří Vrba
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, Olomouc 77515, Czech Republic; Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, Olomouc 77515, Czech Republic.
| |
Collapse
|
215
|
Lee DS, Keo S, Cheng SK, Oh H, Kim YC. Protective effects of Cambodian medicinal plants on tert-butyl hydroperoxide-induced hepatotoxicity via Nrf2-mediated heme oxygenase-1. Mol Med Rep 2016; 15:451-459. [DOI: 10.3892/mmr.2016.6011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Accepted: 09/13/2016] [Indexed: 11/06/2022] Open
|
216
|
Montana G, Lampiasi N. Substance P Induces HO-1 Expression in RAW 264.7 Cells Promoting Switch towards M2-Like Macrophages. PLoS One 2016; 11:e0167420. [PMID: 27907187 PMCID: PMC5132328 DOI: 10.1371/journal.pone.0167420] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 11/14/2016] [Indexed: 01/31/2023] Open
Abstract
Substance P (SP) is a neuropeptide that mediates many physiological as well as inflammatory responses. Recently, SP has been implicated in the resolution of inflammation through induction of M2 macrophages phenotype. The shift between M1-like and M2-like, allowing the resolution of inflammatory processes, also takes place by means of hemeoxygenase-1 (HO-1). HO-1 is induced in response to oxidative stress and inflammatory stimuli and modulates the immune response through macrophages polarisation. SP induces HO-1 expression in human periodontal ligament (PDL), the latter potentially plays a role in cytoprotection. We demonstrated that SP promotes M2-like phenotype from resting as well as from M1 macrophages. Indeed, SP triggers the production of interleukine-10 (IL-10), interleukine-4 (IL-4) and arginase-1 (Arg1) without nitric oxide (NO) generation. In addition, SP increases HO-1 expression in a dose- and time-dependent manner. Here we report that SP, without affecting cell viability, significantly reduces the production of pro-inflammatory cytokines and enzymes, such as tumor necrosis factor-alpha (TNF-α), interleukine-6 (IL-6), inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2), and ameliorates migration and phagocytic properties in LPS-stimulated RAW 264.7 cells. M2-like conversion required retention of NF-κB p65 into the cytoplasm and HO-1 induced expression. Silencing of the HO-1 mRNA expression reversed the induction of pro-inflammatory cytokines in RAW 264.7 stimulated by LPS and down-regulated anti-inflammatory hallmarks of M2 phenotype. In conclusion, our data show that SP treatment might be associated with anti-inflammatory effects in LPS-stimulated RAW 264.7 cells by suppressing NF-κB activation and inducing HO-1 expression.
Collapse
Affiliation(s)
- Giovanna Montana
- Istituto di Biomedicina e Immunologia Molecolare “Alberto Monroy”, Consiglio Nazionale delle Ricerche, Via Ugo La Malfa, Palermo, Italy
| | - Nadia Lampiasi
- Istituto di Biomedicina e Immunologia Molecolare “Alberto Monroy”, Consiglio Nazionale delle Ricerche, Via Ugo La Malfa, Palermo, Italy
- * E-mail:
| |
Collapse
|
217
|
Morrow MP, Kraynyak KA, Sylvester AJ, Shen X, Amante D, Sakata L, Parker L, Yan J, Boyer J, Roh C, Humeau L, Khan AS, Broderick K, Marcozzi-Pierce K, Giffear M, Lee J, Trimble CL, Kim JJ, Sardesai NY, Weiner DB, Bagarazzi ML. Augmentation of cellular and humoral immune responses to HPV16 and HPV18 E6 and E7 antigens by VGX-3100. MOLECULAR THERAPY-ONCOLYTICS 2016; 3:16025. [PMID: 28054033 PMCID: PMC5147865 DOI: 10.1038/mto.2016.25] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 09/03/2016] [Indexed: 12/24/2022]
Abstract
We have previously demonstrated the immunogenicity of VGX-3100, a multicomponent DNA immunotherapy for the treatment of Human Papillomavirus (HPV)16/18-positive CIN2/3 in a phase 1 clinical trial. Here, we report on the ability to boost immune responses with an additional dose of VGX-3100. Patients completing our initial phase 1 trial were offered enrollment into a follow on trial consisting of a single boost dose of VGX-3100. Data show both cellular and humoral immune responses could be augmented above pre-boost levels, including the induction of interferon (IFN)γ production, tumor necrosis factor (TNF)α production, CD8+ T cell activation and the synthesis of lytic proteins. Moreover, observation of antigen-specific regulation of immune-related gene transcripts suggests the induction of a proinflammatory response following the boost. Analysis of T cell receptor (TCR) sequencing suggests the localization of putative HPV-specific T cell clones to the cervical mucosa, which underscores the putative mechanism of action of lesion regression and HPV16/18 elimination noted in our double-blind placebo-controlled phase 2B trial. Taken together, these data indicate that VGX-3100 drives the induction of robust cellular and humoral immune responses that can be augmented by a fourth "booster" dose. These data could be important in the scope of increasing the clinical efficacy rate of VGX-3100.
Collapse
Affiliation(s)
| | | | | | - Xuefei Shen
- Inovio Pharmaceuticals , Plymouth Meeting, Pennsylvania, USA
| | - Dinah Amante
- Inovio Pharmaceuticals , Plymouth Meeting, Pennsylvania, USA
| | - Lindsay Sakata
- Inovio Pharmaceuticals , Plymouth Meeting, Pennsylvania, USA
| | - Lamar Parker
- Unified Women's Clinical Research , Winston-Salem, North Carolina, USA
| | - Jian Yan
- Inovio Pharmaceuticals , Plymouth Meeting, Pennsylvania, USA
| | - Jean Boyer
- Inovio Pharmaceuticals , Plymouth Meeting, Pennsylvania, USA
| | - Christian Roh
- Inovio Pharmaceuticals , Plymouth Meeting, Pennsylvania, USA
| | - Laurent Humeau
- Inovio Pharmaceuticals , Plymouth Meeting, Pennsylvania, USA
| | - Amir S Khan
- Inovio Pharmaceuticals , Plymouth Meeting, Pennsylvania, USA
| | - Kate Broderick
- Inovio Pharmaceuticals , Plymouth Meeting, Pennsylvania, USA
| | | | - Mary Giffear
- Inovio Pharmaceuticals , Plymouth Meeting, Pennsylvania, USA
| | - Jessica Lee
- Inovio Pharmaceuticals , Plymouth Meeting, Pennsylvania, USA
| | | | - J Joseph Kim
- Inovio Pharmaceuticals , Plymouth Meeting, Pennsylvania, USA
| | | | | | | |
Collapse
|
218
|
Gasparova I, Kubatka P, Opatrilova R, Caprnda M, Filipova S, Rodrigo L, Malan L, Mozos I, Rabajdova M, Nosal V, Kobyliak N, Valentova V, Petrovic D, Adamek M, Kruzliak P. Perspectives and challenges of antioxidant therapy for atrial fibrillation. Naunyn Schmiedebergs Arch Pharmacol 2016; 390:1-14. [PMID: 27900409 DOI: 10.1007/s00210-016-1320-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Accepted: 11/18/2016] [Indexed: 12/26/2022]
Abstract
Atrial fibrillation (AF) is the most common sustained arrhythmia associated with significant morbidity and mortality. The mechanisms underlying the pathogenesis of AF are poorly understood, although electrophysiological remodeling has been described as an important initiating step. There is growing evidence that oxidative stress is involved in the pathogenesis of AF. Many known triggers of oxidative stress, such as age, diabetes, smoking, and inflammation, are linked with an increased risk of arrhythmia. Numerous preclinical studies and clinical trials reported the importance of antioxidant therapy in the prevention of AF, using vitamins C and E, polyunsaturated fatty acids, statins, or nitric oxide donors. The aim of our work is to give a current overview and analysis of opportunities, challenges, and benefits of antioxidant therapy in AF.
Collapse
Affiliation(s)
- Iveta Gasparova
- Institute of Biology, Genetics and Medical Genetics, Faculty of Medicine, Comenius University and University Hospital, Bratislava, Slovak Republic, Slovakia
| | - Peter Kubatka
- Department of Medical Biology, Jessenius Faculty of Medicine, Comenius University in Bratislava, Martin, Slovak Republic, Slovakia
| | - Radka Opatrilova
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
| | - Martin Caprnda
- 2nd Department of Internal Medicine, Faculty of Medicine, Comenius University, Bratislava, Slovakia
| | - Slavomira Filipova
- Department of Cardiology, National Institute of Cardiovascular Diseases, Bratislava, Slovakia
| | - Luis Rodrigo
- Faculty of Medicine, University of Oviedo, Central University of Asturias (HUCA), Oviedo, Spain
| | - Leone Malan
- Hypertension in Africa Research Team (HART), North-West University, Potchefstroom Campus, Potchefstroom, South Africa
| | - Ioana Mozos
- Department of Functional Sciences, Victor Babes University of Medicine and Pharmacy, Timisoara, Romania
| | - Miroslava Rabajdova
- Department of Medical and Clinical Biochemistry, Faculty of Medicine, Pavol Jozef Safarik University, Kosice, Slovakia
| | - Vladimir Nosal
- Clinic of Neurology, Jessenius Faculty of Medicine, Comenius University and University Hospital in Martin, Martin, Slovak Republic
| | - Nazarii Kobyliak
- Department of Endocrinology, Bogomolets National Medical University, Kyiv, Ukraine
| | - Vanda Valentova
- Department of Medical Biology, Jessenius Faculty of Medicine, Comenius University in Bratislava, Martin, Slovak Republic, Slovakia
| | - Daniel Petrovic
- Institute of Histology and Embryology, Faculty of Medicine, University of Ljublana, Ljublana, Slovenia
| | - Mariusz Adamek
- Department of Thoracic Surgery, Medical University of Silesia, Zabrze, Poland
| | - Peter Kruzliak
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic. .,2nd Department of Surgery, Faculty of Medicine, Masaryk University, Brno, Czech Republic.
| |
Collapse
|
219
|
Patel A, Zhang S, Shrestha AK, Maturu P, Moorthy B, Shivanna B. Omeprazole induces heme oxygenase-1 in fetal human pulmonary microvascular endothelial cells via hydrogen peroxide-independent Nrf2 signaling pathway. Toxicol Appl Pharmacol 2016; 311:26-33. [PMID: 27725188 PMCID: PMC5089963 DOI: 10.1016/j.taap.2016.10.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 09/24/2016] [Accepted: 10/05/2016] [Indexed: 12/25/2022]
Abstract
Omeprazole (OM) is an aryl hydrocarbon receptor (AhR) agonist and a proton pump inhibitor that is used to treat humans with gastric acid related disorders. Recently, we showed that OM induces NAD (P) H quinone oxidoreductase-1 (NQO1) via nuclear factor erythroid 2-related factor 2 (Nrf2)-dependent mechanism. Heme oxygenase-1 (HO-1) is another cytoprotective and antioxidant enzyme that is regulated by Nrf2. Whether OM induces HO-1 in fetal human pulmonary microvascular endothelial cells (HPMEC) is unknown. Therefore, we tested the hypothesis that OM will induce HO-1 expression via Nrf2 in HPMEC. OM induced HO-1 mRNA and protein expression in a dose-dependent manner. siRNA-mediated knockdown of AhR failed to abrogate, whereas knockdown of Nrf2 abrogated HO-1 induction by OM. To identify the underlying molecular mechanisms, we determined the effects of OM on cellular hydrogen peroxide (H2O2) levels since oxidative stress mediated by the latter is known to activate Nrf2. Interestingly, the concentration at which OM induced HO-1 also increased H2O2 levels. Furthermore, H2O2 independently augmented HO-1 expression. Although N-acetyl cysteine (NAC) significantly decreased H2O2 levels in OM-treated cells, we observed that OM further increased HO-1 mRNA and protein expression in NAC-pretreated compared to vehicle-pretreated cells, suggesting that OM induces HO-1 via H2O2-independent mechanisms. In conclusion, we provide evidence that OM transcriptionally induces HO-1 via AhR - and H2O2 - independent, but Nrf2 - dependent mechanisms. These results have important implications for human disorders where Nrf2 and HO-1 play a beneficial role.
Collapse
Affiliation(s)
- Ananddeep Patel
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Texas Children's Hospital, Baylor College of Medicine, Houston, TX 77030, United States
| | - Shaojie Zhang
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Texas Children's Hospital, Baylor College of Medicine, Houston, TX 77030, United States
| | - Amrit Kumar Shrestha
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Texas Children's Hospital, Baylor College of Medicine, Houston, TX 77030, United States
| | - Paramahamsa Maturu
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Texas Children's Hospital, Baylor College of Medicine, Houston, TX 77030, United States
| | - Bhagavatula Moorthy
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Texas Children's Hospital, Baylor College of Medicine, Houston, TX 77030, United States
| | - Binoy Shivanna
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Texas Children's Hospital, Baylor College of Medicine, Houston, TX 77030, United States.
| |
Collapse
|
220
|
Venkatachalam AB, Livingstone SM, Hu Q, Ray A, Wood C, Cimen S, Alwayn IPJ. Delivery of Soluble Heme Oxygenase 1 Cell-Penetrating Peptide into Liver Cells in in vitro and ex vivo Models of Cold Ischemia. Eur Surg Res 2016; 58:51-68. [PMID: 27838689 DOI: 10.1159/000451079] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 09/26/2016] [Indexed: 11/19/2022]
Abstract
BACKGROUND/PURPOSE Liver transplantation is the treatment of choice in patients with end-stage liver disease. During liver transplantation, ischemia-reperfusion injury (IRI) occurs, which is an inevitable consequence of the transplantation process. To reduce the extent of cellular injury, one of the proteins that have been extensively investigated is heme oxygenase 1 (HO-1), which plays an important role in protecting the organs against IRI. The aim of this study was to introduce an active and functional HO-1 protein conjugated to a cell-penetrating peptide (CPP) in vitro and ex vivo into liver cells in hypothermic and anoxic conditions and to assert its cytoprotective effects. METHODS We generated an enzymatically active soluble (s)HO-1-CPP recombinant protein. The ability of the sHO-1-CPP protein to penetrate McA-RH7777, Clone 9, and Hep G2 cells, primary hepatocytes, and Kupffer and human umbilical vein endothelial cells in vitro, as well as its ability to penetrate a whole liver ex vivo under hypothermic and anoxic conditions, was assessed. An in vitro hypoxia-reoxygenation (HR) model was used to determine the cytoprotective effect of the sHO-1-CPP protein. RESULTS We showed that our recombinant protein sHO-1-CPP can cross cell membranes into rodent and human liver cells in vitro, and the results were further validated ex vivo, where rodent livers were perfused with an organ preservation solution supplemented with sHO-1-CPP under anoxic and hypothermic conditions. Immunohistochemistry revealed an intracellular localization of sHO-1-CPP in zones 1-3 of the perfused livers. The CPP did not exert any significant toxicity on the cells. Treating cells with sHO-1-CPP showed significant cytoprotection in the in vitro HR model. CONCLUSIONS Our findings show that the recombinant protein sHO-1-CPP can be successfully delivered to cells of a whole organ in an ex vivo hypothermic and anoxic perfusion model and that it provides cytoprotection to hepatocytes in an in vitro HR model. These results hold great potential for future repair and protection of donor organs. Future experiments are planned to confirm these data in in vivo models of IRI.
Collapse
|
221
|
Gupta N, Singh T, Chaudhary R, Garg SK, Sandhu GS, Mittal V, Gupta R, Bodin R, Sule S. Bilirubin in coronary artery disease: Cytotoxic or protective? World J Gastrointest Pharmacol Ther 2016; 7:469-476. [PMID: 27867680 PMCID: PMC5095566 DOI: 10.4292/wjgpt.v7.i4.469] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2016] [Revised: 07/07/2016] [Accepted: 08/29/2016] [Indexed: 02/06/2023] Open
Abstract
Bilirubin has traditionally been considered a cytotoxic waste product. However, recent studies have shown bilirubin to have anti-oxidant, anti-inflammatory, vasodilatory, anti-apoptotic and anti-proliferative functions. These properties potentially confer bilirubin a new role of protection especially in coronary artery disease (CAD), which is a low grade inflammatory process exacerbated by oxidative stress. In fact, recent literature reports an inverse relationship between serum concentration of bilirubin and the presence of CAD. In this article, we review the current literature exploring the association between levels of bilirubin and risk of CAD. We conclude that current evidence is inconclusive regarding the protective effect of bilirubin on CAD. A causal relationship between low serum bilirubin level and increased risk of CAD is not currently established.
Collapse
|
222
|
Li Y, Wang X, Yang J, Xie X, Li M, Niu J, Tong L, Tang B. Fluorescent Probe Based on Azobenzene-Cyclopalladium for the Selective Imaging of Endogenous Carbon Monoxide under Hypoxia Conditions. Anal Chem 2016; 88:11154-11159. [PMID: 27748113 DOI: 10.1021/acs.analchem.6b03376] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Carbon monoxide (CO), a crucial gas message molecule, plays an important role in the regulation of physiological and pathological process. Hypoxia-induced CO is involved in modulating various cellular activities, including signal transduction, proliferation, and apoptosis. However, tracking CO fluctuation in the hypoxic cells is still a challenge due to lack of straightforward, visualized, and noninvasive tools. In this work, based on metal palladium-catalyzed reaction, we present the rational design, synthesis, and biological utility of an azobenzene-cyclopalladium-based fluorescent probe, ACP-2, for CO monitoring. ACP-2 exhibits capacity of detecting CO in aqueous buffer solution and live cells with high sensitivity and specificity. Utilizing ACP-2, we displayed a direct and visual evidence of endogenous CO up-regulation in live cells induced by hypoxia. Moreover, CO up-regulation during oxygen-glucose deprivation/reperfusion (OGD/R) was also imaged and certified by ACP-2.
Collapse
Affiliation(s)
- Yong Li
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University , Jinan 250014, P. R. China
| | - Xu Wang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University , Jinan 250014, P. R. China
| | - Jie Yang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University , Jinan 250014, P. R. China
| | - Xilei Xie
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University , Jinan 250014, P. R. China
| | - Mengmeng Li
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University , Jinan 250014, P. R. China
| | - Jinye Niu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University , Jinan 250014, P. R. China
| | - Lili Tong
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University , Jinan 250014, P. R. China
| | - Bo Tang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University , Jinan 250014, P. R. China
| |
Collapse
|
223
|
Okada S. The pathophysiological role of acute inflammation after spinal cord injury. Inflamm Regen 2016; 36:20. [PMID: 29259693 PMCID: PMC5725917 DOI: 10.1186/s41232-016-0026-1] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Accepted: 08/10/2016] [Indexed: 11/10/2022] Open
Abstract
Traumatic spinal cord injury (SCI) causes irreparable severe motor and sensory dysfunction. Mechanical trauma rapidly leads to blood-spinal cord barrier disruption, neural cell death, axonal damage, and demyelination, followed by a cascade of secondary injury that expands the additional inflammatory reaction at the lesion site. Although the role of inflammation in this phase is complex, a number of studies have suggested that inflammatory responses spread the damage to the surrounding tissue, induce apoptotic cell death, and impair spontaneous regeneration and functional recovery. However, recent advances in experimental technology, such as the depletion antibodies for a specific fraction of inflammatory cells and the genetically engineered mice deficient only in specific cells, suggest the beneficial aspects of inflammatory cells, such as a neuroprotective effect, the removal of cellular debris, and the attenuation of the inflammatory reaction in general. In this review, I summarize our recent findings about the biological role of inflammatory cells, especially infiltrating neutrophils and activated microglia after SCI. A better understanding of the pathophysiological role of inflammation in the acute phase of SCI will aid in the development of therapeutic strategy to enhance the functional recovery after SCI.
Collapse
Affiliation(s)
- Seiji Okada
- Department of Advanced Initiatives, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582 Japan.,Orthopaedics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| |
Collapse
|
224
|
Lee DS, Jeong GS. Butein provides neuroprotective and anti-neuroinflammatory effects through Nrf2/ARE-dependent haem oxygenase 1 expression by activating the PI3K/Akt pathway. Br J Pharmacol 2016; 173:2894-909. [PMID: 27465039 PMCID: PMC5055139 DOI: 10.1111/bph.13569] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 07/12/2016] [Accepted: 07/16/2016] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND AND PURPOSE Butein, 3,4,2',4'-tetrahydroxychalcone, has various pharmacological effects. However, no study has demonstrated the specific neurobiological mechanisms of the effects of butein in neuronal cells. The present study examined the role of butein as an antioxidative and anti-inflammatory inducer of haem oxygenase 1 (HO1) in mouse hippocampal HT22, BV2 microglial and primary mouse hippocampus neurons. EXPERIMENTAL APPROACH We investigated the neuroprotective effects of butein on glutamate-induced HT22 cell and primary mouse hippocampal neuron death and its anti-neuroinflammatory effects on LPS-induced activation of BV2 cells. We elucidated the underlying mechanisms by assessing the involvement of NF-κB, HO1, nuclear factor-E2-related factor 2 (Nrf2) and Akt signalling. KEY RESULTS Butein decreased cellular oxidative injury and the production of ROS in glutamate-treated HT22 cells and primary mouse hippocampal neurons. Furthermore, butein suppressed LPS-induced pro-inflammatory enzymes and mediators in BV2 microglia. Butein inhibited IL-6, IL-1β and TNF-α production and mRNA expression. In addition, butein decreased NO and PGE2 production and inducible NOS and COX-2 expression through the NF-κB signalling pathway. Butein up-regulated Nrf2/ARE-mediated HO1 expression through the PI3K/Akt pathway and this was positively associated with its cytoprotective effects and anti-neuroinflammatory actions. CONCLUSION AND IMPLICATIONS Our results indicate that butein effectively prevents glutamate-induced oxidative damage and LPS-induced activation and that the induction of HO1 by butein through the PI3K/Akt pathway and Nrf2 activation appears to play a pivotal role in its effects on neuronal cells. Our results provide evidence for the neuroprotective properties of butein.
Collapse
Affiliation(s)
- Dong-Sung Lee
- College of Pharmacy, Chosun University, Gwangju, Korea
| | | |
Collapse
|
225
|
Cavaillon JM, Annane D. Invited review: Compartmentalization of the inflammatory response in sepsis and SIRS. ACTA ACUST UNITED AC 2016. [DOI: 10.1177/09680519060120030301] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Sepsis and systemic inflammatory response syndrome (SIRS) are associated with an exacerbated production of both pro- and anti-inflammatory mediators that are mainly produced within tissues. Although a systemic process, the pathophysiological events differ from organ to organ, and from organ to peripheral blood, leading to the concept of compartmentalization. The nature of the insult ( e.g. burn, hemorrhage, trauma, peritonitis), the cellular composition of each compartment ( e.g . nature of phagocytes, nature of endothelial cells), and its micro-environment ( e.g. local presence of granulocyte-macrophage colony stimulating factor [GM-CSF] in the lungs, low levels of arginine in the liver, release of endotoxin from the gut), and leukocyte recruitment, have a great influence on local inflammation and on tissue injury. High levels of pro-inflammatory mediators ( e.g. interleukin-1 [IL-1], tumor necrosis factor [TNF], gamma interferon [IFN-γ], high mobility group protein-1 [HMGB1], macrophage migration inhibitory factor [MIF]) produced locally and released into the blood stream initiate remote organ injury as a consequence of an organ cross-talk. The inflammatory response within the tissues is greatly influenced by the local delivery of neuromediators by the cholinergic and sympathetic neurons. Acetylcholine and epinephrine contribute with IL-10 and other mediators to the anti-inflammatory compensatory response initiated to dampen the inflammatory process. Unfortunately, this regulatory response leads to an altered immune status of leukocytes that can increase the susceptibility to further infection. Again, the nature of the insult, the nature of the leukocytes, the presence of circulating microbial components, and the nature of the triggering agent employed to trigger cells, greatly influence the immune status of the leukocytes that may differ from one compartment to another. While anti-inflammatory mediators predominate within the blood stream to avoid igniting new inflammatory foci, their presence within tissues may not always be sufficient to prevent the initiation of a deleterious inflammatory response in the different compartments.
Collapse
Affiliation(s)
| | - Djillali Annane
- Service de Réanimation, Hôpital Raymond Poincaré, Assistance Publique - Hôpitaux de Paris, Faculté de Médecine Paris Ile de France Ouest, Université de Versailles Saint-Quentin-en-Yvelines, Garches, France
| |
Collapse
|
226
|
Resveratrol Protects Oxidative Stress-Induced Intestinal Epithelial Barrier Dysfunction by Upregulating Heme Oxygenase-1 Expression. Dig Dis Sci 2016; 61:2522-34. [PMID: 27146412 DOI: 10.1007/s10620-016-4184-4] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Accepted: 04/26/2016] [Indexed: 12/12/2022]
Abstract
BACKGROUND/AIM Obstructive jaundice (OJ) is frequently complicated by infections and has been associated with increased bacterial translocation, intestinal epithelial hyperpermeability, and oxidative stress, but the mechanism remains unclear. The potential effect of resveratrol (Res) on modifying intestinal epithelial dysfunction was evaluated both in vitro and in vivo. METHODS Caco-2 cells (in vitro) and male Wistar rats (n = 60; in vivo) were used to evaluate the role of Res on intestinal epithelial dysfunction. Hydrogen peroxide was used to induce oxidative stress in the Caco-2 cells. In bile duct-ligated group, OJ was successfully established on Day 7 after bile duct ligation, whereas sham-operated and vehicle-treated rats served as controls. Western blot and RT-qPCR were performed to analyze TJ proteins expression in epithelium isolated from rat intestine. RESULTS Intestinal hyperpermeability was associated with decreased expression and phosphorylation of occludin and zonula occluden (ZO-1), but increased oxidation in Caco-2 cells and the intestinal epithelium. Res treatment increased the epithelial expression and phosphorylation of occludin and ZO-1 in a concentration-dependent manner. Moreover, Res which protected Caco-2 cells from H2O2-induced oxidative damage clearly reduced malondialdehyde level and intracellular reactive oxygen species accumulation, but increased the expression levels of superoxide dismutase and heme oxygenase-1 (HO-1). Further studies showed that Res also inhibited H2O2-induced protein kinase C activity and p38 phosphorylation. Interestingly, these effects of Res were abolished by the HO-1 inhibitor zinc protoporphyrin or knockdown of HO-1 by siRNA. CONCLUSIONS Res protected gut barrier function possibly by initiating HO-1-dependent signaling which is essential for common expression of key tight junction proteins. It also provides a rationale to develop Res clinical applications of intestinal disorders.
Collapse
|
227
|
Trio PZ, Fujisaki S, Tanigawa S, Hisanaga A, Sakao K, Hou DX. DNA Microarray Highlights Nrf2-Mediated Neuron Protection Targeted by Wasabi-Derived Isothiocyanates in IMR-32 Cells. GENE REGULATION AND SYSTEMS BIOLOGY 2016; 10:73-83. [PMID: 27547033 PMCID: PMC4982521 DOI: 10.4137/grsb.s39440] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 05/15/2016] [Accepted: 05/21/2016] [Indexed: 11/05/2022]
Abstract
6-(Methylsulfinyl)hexyl isothiocyanate (6-MSITC), 6-(methylthio)hexyl isothiocyanate (6-MTITC), and 4-(methylsulfinyl)butyl isothiocyanate (4-MSITC) are isothiocyanate (ITC) bioactive compounds from Japanese Wasabi. Previous in vivo studies highlighted the neuroprotective potential of ITCs since ITCs enhance the production of antioxidant-related enzymes. Thus, in this present study, a genome-wide DNA microarray analysis was designed to profile gene expression changes in a neuron cell line, IMR-32, stimulated by these ITCs. Among these ITCs, 6-MSITC caused the expression changes of most genes (263), of which 100 genes were upregulated and 163 genes were downregulated. Gene categorization showed that most of the differentially expressed genes are involved in oxidative stress response, and pathway analysis further revealed that Nrf2-mediated oxidative stress pathway is the top of the ITC-modulated signaling pathway. Finally, real-time polymerase chain reaction (PCR) and Western blotting confirmed the gene expression and protein products of the major targets by ITCs. Taken together, Wasabi-derived ITCs might target the Nrf2-mediated oxidative stress pathway to exert neuroprotective effects.
Collapse
Affiliation(s)
- Phoebe Zapanta Trio
- The United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima, Japan
| | - Satoru Fujisaki
- Department of Food Sciences and Biotechnology, Faculty of Agriculture, Kagoshima University, Kagoshima, Japan
| | - Shunsuke Tanigawa
- The United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima, Japan.; Present address: Program for Leading Graduate Schools, Health Life Science, Kumamoto University, Kumamoto, Japan
| | - Ayami Hisanaga
- The United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima, Japan
| | - Kozue Sakao
- The United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima, Japan.; Department of Food Sciences and Biotechnology, Faculty of Agriculture, Kagoshima University, Kagoshima, Japan
| | - De-Xing Hou
- The United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima, Japan.; Department of Food Sciences and Biotechnology, Faculty of Agriculture, Kagoshima University, Kagoshima, Japan
| |
Collapse
|
228
|
Kwon MY, Park E, Lee SJ, Chung SW. Heme oxygenase-1 accelerates erastin-induced ferroptotic cell death. Oncotarget 2016; 6:24393-403. [PMID: 26405158 PMCID: PMC4695193 DOI: 10.18632/oncotarget.5162] [Citation(s) in RCA: 416] [Impact Index Per Article: 52.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Accepted: 08/28/2015] [Indexed: 02/06/2023] Open
Abstract
The oncogenic RAS-selective lethal small molecule Erastin triggers a unique iron-dependent form of nonapoptotic cell death termed ferroptosis. Ferroptosis is dependent upon the production of intracellular iron-dependent reactive oxygen species (ROS), but not other metals. However, key regulators remain unknown. The heme oxygenase (HO) is a major intracellular source of iron. In this study, the role of heme oxygenase in Erastin-triggered ferroptotic cancer cell death has been investigated. Zinc protoporphyrin IX (ZnPP), a HO-1 inhibitor, prevented Erastin-triggered ferroptotic cancer cell death. Furthermore, Erastin induced the protein and mRNA levels of HO-1 in HT-1080 fibrosarcoma cells. HO-1+/+ and HO-1-/- fibroblast, HO-1 overexpression, and chycloheximide-treated experiments revealed that the expression of HO-1 has a decisive effects in Erastin-triggered cell death. Hemin and CO-releasing molecules (CORM) promote Erastin-induced ferroptotic cell death, not by biliverdin and bilirubin. In addition, hemin and CORM accelerate the HO-1 expression in the presence of Erastin and increase membranous lipid peroxidation. Thus, HO-1 is an essential enzyme for iron-dependent lipid peroxidation during ferroptotic cell death.
Collapse
Affiliation(s)
- Min-Young Kwon
- School of Biological Sciences, College of Natural Sciences, University of Ulsan, Ulsan 680-749, South Korea
| | - Eunhee Park
- School of Biological Sciences, College of Natural Sciences, University of Ulsan, Ulsan 680-749, South Korea
| | - Seon-Jin Lee
- Genome Structure Research Center, Korea Research Institute of Bioscience and Biotechnology, Yuseong-gu, Daejeon 305-806, South Korea
| | - Su Wol Chung
- School of Biological Sciences, College of Natural Sciences, University of Ulsan, Ulsan 680-749, South Korea
| |
Collapse
|
229
|
Choi EY, Lee SS, Hyeon JY, Choe SH, Keum BR, Lim JM, Park DC, Choi IS, Cho KK. Effects of β-Glucan on the Release of Nitric Oxide by Macrophages Stimulated with Lipopolysaccharide. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2016; 29:1664-1674. [PMID: 27488844 PMCID: PMC5088388 DOI: 10.5713/ajas.16.0418] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Revised: 06/20/2016] [Accepted: 07/19/2016] [Indexed: 01/14/2023]
Abstract
This research analyzed the effect of β-glucan that is expected to alleviate the production of the inflammatory mediator in macrophagocytes, which are processed by the lipopolysaccharide (LPS) of Escherichia. The incubated layer was used for a nitric oxide (NO) analysis. The DNA-binding activation of the small unit of nuclear factor-κB was measured using the enzyme-linked immunosorbent assay-based kit. In the RAW264.7 cells that were vitalized by Escherichia coli (E. coli) LPS, the β-glucan inhibited both the combatant and rendering phases of the inducible NO synthase (iNOS)-derived NO. β-Glucan increased the expression of the heme oxygenase-1 (HO-1) in the cells that were stimulated by E. coli LPS, and the HO-1 activation was inhibited by the tin protoporphyrin IX (SnPP). This shows that the NO production induced by LPS is related to the inhibition effect of β-glucan. The phosphorylation of c-Jun N-terminal kinases (JNK) and the p38 induced by the LPS were not influenced by the β-glucan, and the inhibitory κB-α (IκB-α) decomposition was not influenced either. Instead, β-glucan remarkably inhibited the phosphorylation of the signal transducer and activator of transcription-1 (STAT1) that was induced by the E. coli LPS. Overall, the β-glucan inhibited the production of NO in macrophagocytes that was vitalized by the E .coli LPS through the HO-1 induction and the STAT1 pathways inhibition in this research. As the host immune response control by β-glucan weakens the progress of the inflammatory disease, β-glucan can be used as an effective immunomodulator.
Collapse
Affiliation(s)
- E Y Choi
- Department of Life Science, Silla University, Busan 617-736, Korea
| | - S S Lee
- Division of Applied Life Science, Graduate School of Gyeongsang National University, IALS, Jinju 660-701, Korea
| | - J Y Hyeon
- Department of Life Science, Silla University, Busan 617-736, Korea
| | - S H Choe
- Department of Life Science, Silla University, Busan 617-736, Korea
| | - B R Keum
- Department of Life Science, Silla University, Busan 617-736, Korea
| | - J M Lim
- Glucan Corporation, Gijang-gun, Busan 46048, Korea
| | - D C Park
- Glucan Corporation, Gijang-gun, Busan 46048, Korea
| | - I S Choi
- Department of Life Science, Silla University, Busan 617-736, Korea
| | - K K Cho
- Department of Animal Resources Technology, Gyeongnam National University of Science and Technology, Jinju 52725, Korea
| |
Collapse
|
230
|
Vercellotti GM, Zhang P, Nguyen J, Abdulla F, Chen C, Nguyen P, Nowotny C, Steer CJ, Smith A, Belcher JD. Hepatic Overexpression of Hemopexin Inhibits Inflammation and Vascular Stasis in Murine Models of Sickle Cell Disease. Mol Med 2016; 22:437-451. [PMID: 27451971 DOI: 10.2119/molmed.2016.00063] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Accepted: 07/11/2016] [Indexed: 02/02/2023] Open
Abstract
Sickle cell disease (SCD) patients have low serum hemopexin (Hpx) levels due to chronic hemolysis. We hypothesize that in SCD mice, hepatic overexpression of hemopexin will scavenge the proximal mediator of vascular activation, heme, and will inhibit inflammation and microvascular stasis. To examine the protective role of Hpx in SCD, we transplanted bone marrow from NY1DD SCD mice into Hpx™/™ or Hpx+/+ C57BL/6 mice. Dorsal skin fold chambers were implanted in week 13 post-transplant and microvascular stasis (% non-flowing venules) evaluated in response to heme infusion. Hpx™/™ sickle mice had significantly greater microvascular stasis in response to heme infusion than Hpx+/+ sickle mice (p<0.05), demonstrating the protective effect of Hpx in SCD. We utilized Sleeping Beauty (SB) transposon-mediated gene transfer to overexpress wild-type rat Hpx (wt-Hpx) in NY1DD and Townes-SS SCD mice. Control SCD mice were treated with lactated Ringer's solution (LRS) or a luciferase (Luc) plasmid. Plasma and hepatic Hpx were significantly increased compared to LRS and Luc controls. Microvascular stasis in response to heme infusion in NY1DD and Townes-SS mice overexpressing wt-Hpx had significantly less stasis than controls (p<0.05). Wt-Hpx overexpression markedly increased hepatic nuclear Nrf2 expression, HO-1 activity and protein, the heme-Hpx binding protein and scavenger receptor, CD91/LRP1 and decreased NF-κB activation. Two missense (ms)-Hpx SB-constructs that bound neither heme nor the Hpx receptor, CD91/LRP1, did not prevent heme-induced stasis. In conclusion, increasing Hpx levels in transgenic sickle mice via gene transfer activates the Nrf2/HO-1 anti-oxidant axis and ameliorates inflammation and vaso-occlusion.
Collapse
Affiliation(s)
- Gregory M Vercellotti
- Division of Hematology, Oncology and Transplantation, Department of Medicine, 420 Delaware St SE, MMC 480, University of Minnesota, Minneapolis, Minnesota, USA.,Vascular Biology Center, University of Minnesota, Minneapolis, Minnesota, USA
| | - Ping Zhang
- Division of Hematology, Oncology and Transplantation, Department of Medicine, 420 Delaware St SE, MMC 480, University of Minnesota, Minneapolis, Minnesota, USA.,Vascular Biology Center, University of Minnesota, Minneapolis, Minnesota, USA
| | - Julia Nguyen
- Division of Hematology, Oncology and Transplantation, Department of Medicine, 420 Delaware St SE, MMC 480, University of Minnesota, Minneapolis, Minnesota, USA.,Vascular Biology Center, University of Minnesota, Minneapolis, Minnesota, USA
| | - Fuad Abdulla
- Division of Hematology, Oncology and Transplantation, Department of Medicine, 420 Delaware St SE, MMC 480, University of Minnesota, Minneapolis, Minnesota, USA.,Vascular Biology Center, University of Minnesota, Minneapolis, Minnesota, USA
| | - Chunsheng Chen
- Division of Hematology, Oncology and Transplantation, Department of Medicine, 420 Delaware St SE, MMC 480, University of Minnesota, Minneapolis, Minnesota, USA.,Vascular Biology Center, University of Minnesota, Minneapolis, Minnesota, USA
| | - Phong Nguyen
- Division of Hematology, Oncology and Transplantation, Department of Medicine, 420 Delaware St SE, MMC 480, University of Minnesota, Minneapolis, Minnesota, USA.,Vascular Biology Center, University of Minnesota, Minneapolis, Minnesota, USA
| | - Carlos Nowotny
- Division of Hematology, Oncology and Transplantation, Department of Medicine, 420 Delaware St SE, MMC 480, University of Minnesota, Minneapolis, Minnesota, USA.,Vascular Biology Center, University of Minnesota, Minneapolis, Minnesota, USA
| | - Clifford J Steer
- Division of Gastroenterology, Department of Medicine, and Department of Genetics, Cell Biology and Development, 420 Delaware St SE, MMC 36, University of Minnesota, Minneapolis, Minnesota, USA
| | - Ann Smith
- Division of Molecular Biology and Biochemistry, School of Biological Sciences, University of Missouri-Kansas City, Kansas City, Missouri, USA
| | - John D Belcher
- Division of Hematology, Oncology and Transplantation, Department of Medicine, 420 Delaware St SE, MMC 480, University of Minnesota, Minneapolis, Minnesota, USA.,Vascular Biology Center, University of Minnesota, Minneapolis, Minnesota, USA
| |
Collapse
|
231
|
Denaës T, Lodder J, Chobert MN, Ruiz I, Pawlotsky JM, Lotersztajn S, Teixeira-Clerc F. The Cannabinoid Receptor 2 Protects Against Alcoholic Liver Disease Via a Macrophage Autophagy-Dependent Pathway. Sci Rep 2016; 6:28806. [PMID: 27346657 PMCID: PMC4921859 DOI: 10.1038/srep28806] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 06/10/2016] [Indexed: 02/06/2023] Open
Abstract
Kupffer cells, the resident macrophages of the liver, play a major role in the pathogenesis of alcoholic liver disease. We have previously demonstrated that CB2 receptor protects against alcoholic liver disease by inhibiting alcohol-induced inflammation and steatosis via the regulation of Kupffer cell activation. Here, we explored the mechanism underlying these effects and hypothesized that the anti-inflammatory properties of CB2 receptor in Kupffer cells rely on activation of autophagy. For this purpose, mice invalidated for CB2 receptor (CB2Mye−/− mice) or for the autophagy gene ATG5 (ATG5Mye−/− mice) in the myeloid lineage, and their littermate wild-type mice were subjected to chronic-plus-binge ethanol feeding. CB2Mye−/− mice showed exacerbated alcohol-induced pro-inflammatory gene expression and steatosis. Studies in cultured macrophages demonstrated that CB2 receptor activation by JWH-133 stimulated autophagy via a heme oxygenase-1 dependent pathway. Moreover, JWH-133 reduced the induction of inflammatory genes by lipopolysaccharide in wild-type macrophages, but not in ATG5-deficient cells. The CB2 agonist also protected from alcohol-induced liver inflammation and steatosis in wild-type mice, but not in ATG5Mye−/− mice demonstrating that macrophage autophagy mediates the anti-inflammatory and anti-steatogenic effects of CB2 receptor. Altogether these results demonstrate that CB2 receptor activation in macrophages protects from alcohol-induced steatosis by inhibiting hepatic inflammation through an autophagy-dependent pathway.
Collapse
Affiliation(s)
- Timothé Denaës
- INSERM U955, Institut Mondor de Recherche Biomédicale, Créteil, F-94000 France.,Université Paris-Est, Faculté de Médecine, UMR-S955, Créteil, F-94000 France
| | - Jasper Lodder
- INSERM U955, Institut Mondor de Recherche Biomédicale, Créteil, F-94000 France.,Université Paris-Est, Faculté de Médecine, UMR-S955, Créteil, F-94000 France
| | - Marie-Noële Chobert
- INSERM U955, Institut Mondor de Recherche Biomédicale, Créteil, F-94000 France.,Université Paris-Est, Faculté de Médecine, UMR-S955, Créteil, F-94000 France
| | - Isaac Ruiz
- INSERM U955, Institut Mondor de Recherche Biomédicale, Créteil, F-94000 France.,Université Paris-Est, Faculté de Médecine, UMR-S955, Créteil, F-94000 France
| | - Jean-Michel Pawlotsky
- INSERM U955, Institut Mondor de Recherche Biomédicale, Créteil, F-94000 France.,Université Paris-Est, Faculté de Médecine, UMR-S955, Créteil, F-94000 France
| | - Sophie Lotersztajn
- INSERM U955, Institut Mondor de Recherche Biomédicale, Créteil, F-94000 France.,Université Paris-Est, Faculté de Médecine, UMR-S955, Créteil, F-94000 France.,INSERM U1149, Center for Research on Inflammation, Paris, F-75018, France.,Université Paris Diderot, Sorbonne Paris Cité, Laboratoire d'Excellence Inflammex, Faculté de Médecine, Site Xavier Bichat, Paris, F-75018, France
| | - Fatima Teixeira-Clerc
- INSERM U955, Institut Mondor de Recherche Biomédicale, Créteil, F-94000 France.,Université Paris-Est, Faculté de Médecine, UMR-S955, Créteil, F-94000 France
| |
Collapse
|
232
|
Go H, La P, Namba F, Ito M, Yang G, Brydun A, Igarashi K, Dennery PA. MiR-196a regulates heme oxygenase-1 by silencing Bach1 in the neonatal mouse lung. Am J Physiol Lung Cell Mol Physiol 2016; 311:L400-11. [PMID: 27343195 DOI: 10.1152/ajplung.00428.2015] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 06/18/2016] [Indexed: 12/30/2022] Open
Abstract
In the lung, heme oxygenase-1 (HO-1) is developmentally regulated, with its highest expression in the first days of life. In addition, neonatal mice have limited HO-1 induction in hyperoxia compared with adults. However, few reports have addressed the functional effect of microRNAs (miRNAs) in the regulation of HO-1 in vivo. The aims of the present study were to characterize changes in lung miRNA expression during postnatal development and in response to hyperoxic exposure, and to identify miRNAs that target lung HO-1 gene expression. Neonatal (<12 h old) and adult (2 mo old) mice were exposed to room air or hyperoxia (95% oxygen) for 72 h. TaqMan low-density array rodent miRNA assays were used to calculate miRNA expression changes between control and hyperoxia groups in neonatal and adult lungs. In neonates, we identified miR-196a, which binds to the 3'-untranslated region of the transcriptional repressor BTB and CNC homology 1 (Bach1) and regulates its expression, and subsequently leads to higher levels of lung HO-1 mRNA compared with levels in adults. Despite the increase at baseline, miR-196a was degraded in hyperoxia resulting in limited HO-1 induction in neonatal mice lungs. Furthermore, the developmental differences in lung HO-1 gene expression can be explained in part by the variation in miRNA-196a and its effect on Bach1. This report is the first to show developmental differences in lung miR-196a and its effect on Bach1 and HO-1 expression at baseline and in hyperoxia.
Collapse
Affiliation(s)
- Hayato Go
- Department of Neonatology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania; Department of Pediatrics, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Ping La
- Department of Neonatology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Fumihiko Namba
- Department of Neonatology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania; Department of Pediatrics, Saitama Medical Center, Saitama, Japan
| | - Masato Ito
- Department of Pediatrics, Saitama Medical Center, Saitama, Japan
| | - Guang Yang
- Department of Neonatology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Andrey Brydun
- Department of Biochemistry, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Kazuhiko Igarashi
- Department of Biochemistry, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Phyllis A Dennery
- Department of Neonatology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania; Department of Pediatrics, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania and Alpert Medical School at Brown University, Providence, Rhode Island; and
| |
Collapse
|
233
|
Maharshak N, Ryu HS, Fan TJ, Onyiah JC, Schulz S, Otterbein SL, Wong R, Hansen JJ, Otterbein LE, Carroll IM, Plevy SE. Escherichia coli heme oxygenase modulates host innate immune responses. Microbiol Immunol 2016; 59:452-65. [PMID: 26146866 DOI: 10.1111/1348-0421.12282] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Revised: 06/24/2015] [Accepted: 06/28/2015] [Indexed: 12/13/2022]
Abstract
Induction of mammalian heme oxygenase (HO)-1 and exposure of animals to carbon monoxide (CO) ameliorates experimental colitis. When enteric bacteria, including Escherichia coli, are exposed to low iron conditions, they express an HO-like enzyme, chuS, and metabolize heme into iron, biliverdin and CO. Given the abundance of enteric bacteria residing in the intestinal lumen, our postulate was that commensal intestinal bacteria may be a significant source of CO and those that express chuS and other Ho-like molecules suppress inflammatory immune responses through release of CO. According to real-time PCR, exposure of mice to CO results in changes in enteric bacterial composition and increases E. coli 16S and chuS DNA. Moreover, the severity of experimental colitis correlates positively with E. coli chuS expression in IL-10 deficient mice. To explore functional roles, E. coli were genetically modified to overexpress chuS or the chuS gene was deleted. Co-culture of chuS-overexpressing E. coli with bone marrow-derived macrophages resulted in less IL-12p40 and greater IL-10 secretion than in wild-type or chuS-deficient E. coli. Mice infected with chuS-overexpressing E. coli have more hepatic CO and less serum IL-12 p40 than mice infected with chuS-deficient E. coli. Thus, CO alters the composition of the commensal intestinal microbiota and expands populations of E. coli that harbor the chuS gene. These bacteria are capable of attenuating innate immune responses through expression of chuS. Bacterial HO-like molecules and bacteria-derived CO may represent novel targets for therapeutic intervention in inflammatory conditions.
Collapse
Affiliation(s)
- Nitsan Maharshak
- Department of Medicine and Center for GI Biology and Diseases, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, 27599.,Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, 27599.,Department of Gastroenterology and Liver Diseases, Tel Aviv Medical Center, Affiliated to the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, 6997801, Israel
| | - Hyungjin Sally Ryu
- Department of Medicine and Center for GI Biology and Diseases, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, 27599
| | - Ting-Jia Fan
- Department of Medicine and Center for GI Biology and Diseases, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, 27599
| | - Joseph C Onyiah
- Department of Medicine and Center for GI Biology and Diseases, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, 27599.,Division of Gastroenterology and Hepatology, Department of Medicine, University of Colorado, Aurora, CO and Denver VA Medical Center, Denver, Colorado, 80220
| | - Stephanie Schulz
- Department of Pediatrics, Division of Neonatal and Developmental Medicine, Stanford University School of Medicine, Palo Alto, California, 94305
| | - Sherrie L Otterbein
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, 02115, USA
| | - Ron Wong
- Department of Pediatrics, Division of Neonatal and Developmental Medicine, Stanford University School of Medicine, Palo Alto, California, 94305
| | - Jonathan J Hansen
- Department of Medicine and Center for GI Biology and Diseases, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, 27599.,Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, 27599
| | - Leo E Otterbein
- Department of Pediatrics, Division of Neonatal and Developmental Medicine, Stanford University School of Medicine, Palo Alto, California, 94305
| | - Ian M Carroll
- Department of Medicine and Center for GI Biology and Diseases, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, 27599
| | - Scott E Plevy
- Department of Medicine and Center for GI Biology and Diseases, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, 27599.,Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, 27599
| |
Collapse
|
234
|
Filippone EJ, Farber JL. Hemophagocytic lymphohistiocytosis: an update for nephrologists. Int Urol Nephrol 2016; 48:1291-1304. [DOI: 10.1007/s11255-016-1294-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Accepted: 04/11/2016] [Indexed: 12/11/2022]
|
235
|
Liu D, Wang X, Qin W, Chen J, Wang Y, Zhuang M, Sun B. Suppressive effect of exogenous carbon monoxide on endotoxin-stimulated platelet over-activation via the glycoprotein-mediated PI3K-Akt-GSK3β pathway. Sci Rep 2016; 6:23653. [PMID: 27020460 PMCID: PMC4810323 DOI: 10.1038/srep23653] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Accepted: 03/10/2016] [Indexed: 12/15/2022] Open
Abstract
Platelet activation is an important event involved in the pathophysiological processes of the coagulation system. Clinical evidence has shown that platelets undergo distinctive pathological processes during sepsis. Unfortunately, how platelets physiologically respond to inflammation or sepsis is not well understood. In this study, we used a lipopolysaccharide (LPS)-stimulated platelet model to systemically investigate alterations in membrane glycoprotein expression, molecular signaling, morphology and critical functions of platelets. We found that platelet adhesion, aggregation, secretion, and spreading on immobilized fibrinogen and the expression of platelet membrane glycoproteins were significantly increased by LPS stimulation, and these changes were accompanied by a significant decrease in cGMP levels and an abnormal distribution of platelet α-granules. Exogenous CO reversed these alterations. Profound morphological changes in LPS-stimulated platelets were observed using atomic force microscopy and phase microscopy. Furthermore, the elevated activities of PI3Ks, AKt and GSK-3β were effectively suppressed by exogenous CO, leading to the improvement of platelet function. Together, these results provide evidence that platelet over-activation persists under LPS-stimulation and that exogenous CO plays an important role in suppressing platelet activation via the glycoprotein-mediated PI3K-Akt-GSK3β pathway.
Collapse
Affiliation(s)
- Dadong Liu
- Department of Critical Care Medicine, Affiliated Hospital, Jiangsu University, Zhenjiang, Jiangsu Province, China
| | - Xu Wang
- Department of Burns and Plastic Surgery, Affiliated Hospital, Jiangsu University, Zhenjiang, Jiangsu Province, China
| | - Weiting Qin
- Department of Burns and Plastic Surgery, Affiliated Hospital, Jiangsu University, Zhenjiang, Jiangsu Province, China
| | - Jingjia Chen
- Department of Burns and Plastic Surgery, Affiliated Hospital, Jiangsu University, Zhenjiang, Jiangsu Province, China
| | - Yawei Wang
- School of Science, Jiangsu University, Zhenjiang, Jiangsu Province, China
| | - Mingfeng Zhuang
- Department of Burns and Plastic Surgery, Affiliated Hospital, Jiangsu University, Zhenjiang, Jiangsu Province, China
| | - Bingwei Sun
- Department of Burns and Plastic Surgery, Affiliated Hospital, Jiangsu University, Zhenjiang, Jiangsu Province, China
| |
Collapse
|
236
|
Human Cytomegalovirus-Encoded Human Interleukin-10 (IL-10) Homolog Amplifies Its Immunomodulatory Potential by Upregulating Human IL-10 in Monocytes. J Virol 2016; 90:3819-3827. [PMID: 26792743 DOI: 10.1128/jvi.03066-15] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 01/14/2016] [Indexed: 12/16/2022] Open
Abstract
UNLABELLED The human cytomegalovirus (HCMV) gene UL111A encodes cytomegalovirus-encoded human interleukin-10 (cmvIL-10), a homolog of the potent immunomodulatory cytokine human interleukin 10 (hIL-10). This viral homolog exhibits a range of immunomodulatory functions, including suppression of proinflammatory cytokine production and dendritic cell (DC) maturation, as well as inhibition of major histocompatibility complex (MHC) class I and class II. Here, we present data showing that cmvIL-10 upregulates hIL-10, and we identify CD14(+)monocytes and monocyte-derived macrophages and DCs as major sources of hIL-10 secretion in response to cmvIL-10. Monocyte activation was not a prerequisite for cmvIL-10-mediated upregulation of hIL-10, which was dose dependent and controlled at the transcriptional level. Furthermore, cmvIL-10 upregulated expression of tumor progression locus 2 (TPL2), which is a regulator of the positive hIL-10 feedback loop, whereas expression of a negative regulator of the hIL-10 feedback loop, dual-specificity phosphatase 1 (DUSP1), remained unchanged. Engagement of the hIL-10 receptor (hIL-10R) by cmvIL-10 led to upregulation of heme oxygenase 1 (HO-1), an enzyme linked with suppression of inflammatory responses, and this upregulation was required for cmvIL-10-mediated upregulation of hIL-10. We also demonstrate an important role for both phosphatidylinositol 3-kinase (PI3K) and STAT3 in the upregulation of HO-1 and hIL-10 by cmvIL-10. In addition to upregulating hIL-10, cmvIL-10 could exert a direct immunomodulatory function, as demonstrated by its capacity to upregulate expression of cell surface CD163 when hIL-10 was neutralized. This study identifies a mechanistic basis for cmvIL-10 function, including the capacity of this viral cytokine to potentially amplify its immunosuppressive impact by upregulating hIL-10 expression. IMPORTANCE Human cytomegalovirus (HCMV) is a large, double-stranded DNA virus that causes significant human disease, particularly in the congenital setting and in solid-organ and hematopoietic stem cell transplant patients. A prominent feature of HCMV is the wide range of viral gene products that it encodes which function to modulate host defenses. One of these is cmvIL-10, which is a homolog of the potent immunomodulatory cytokine human interleukin 10 (hIL-10). In this study, we report that, in addition to exerting a direct biological impact, cmvIL-10 upregulates the expression of hIL-10 by primary blood-derived monocytes and that it does so by modulating existing cellular pathways. This capacity of cmvIL-10 to upregulate hIL-10 represents a mechanism by which HCMV may amplify its immunomodulatory impact during infection.
Collapse
|
237
|
Wang D, Lu Z, Zhang H, Jin SF, Yang H, Li YM, Shi LY. Daphnetin Alleviates Experimental Autoimmune Encephalomyelitis via Regulating Dendritic Cell Activity. CNS Neurosci Ther 2016; 22:558-67. [PMID: 27013083 DOI: 10.1111/cns.12537] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Revised: 02/16/2016] [Accepted: 02/18/2016] [Indexed: 12/13/2022] Open
Abstract
AIMS Daphnetin, a coumarin derivative extracted from Daphne odora var. marginata, has been reported to have antiinflammatory and immunosuppressive properties. Our previous study indicated that it was able to remarkably suppress the neuroinflammation and suggested its potential application in treating neuroinflammatory diseases. Multiple sclerosis (MS), a Th cell-mediated autoimmune disease, is the most common inflammatory demyelinating disease of the central nervous system (CNS). We examined whether daphnetin treatment can protect mice against experimental autoimmune encephalomyelitis (EAE), an animal model for MS. METHODS To assess the effect of daphnetin in neuroinflammatory diseases, the EAE mice were established and treated with daphnetin at 8 mg/kg for 28 days. The severity of neuroinflammation and demyelination in the spinal cords was examined histopathologically. Infiltration of CD4(+) T cells into the CNS was assessed by immunohistochemistry, and the cytokine production was determined by ELISA. Meanwhile, the effect of daphnetin on the activity of dendritic cells (DCs) was evaluated, as assessed by DCs' capability to express surface markers, secrete cytokines, and activate naïve CD4(+) T cells. Furthermore, we explored the molecular mechanisms whereby DAPH regulated DCs' activity and thereby CD4(+) T cell responses. RESULTS The administration of daphnetin markedly alleviated the clinical symptoms of EAE and reduced the CNS inflammation and demyelination in experimental mice. Th1 and Th17 cell responses were profoundly repressed in daphnetin-treated EAE mice. Mechanistically, daphnetin treatment significantly repressed the activation, maturation, and antigen-presenting capability of DCs. NF-κB signaling was significantly reduced in daphnetin-treated DCs, along with a concomitant induction of heme oxygenase-1, a negative regulator of inflammatory signaling. CONCLUSIONS Our findings for the first time demonstrate the property of daphnetin in regulating DCs' function and subsequently Th development. Given the low or absent toxicity associated with daphnetin, our data may suggest a novel safe and effective approach to control autoimmune neuroinflammation.
Collapse
Affiliation(s)
- Dan Wang
- State Key Laboratory of Natural Medicines, Department of Physiology, China Pharmaceutical University, Nanjing, China.,Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou, China
| | - Zhe Lu
- Department of Basic Medical Science, Key Lab of Immunology and Molecular Medicine, School of Medicine, Hangzhou Normal University, Hangzhou, China
| | - Hang Zhang
- Department of Basic Medical Science, Key Lab of Immunology and Molecular Medicine, School of Medicine, Hangzhou Normal University, Hangzhou, China
| | - Su-Feng Jin
- Department of Basic Medical Science, Key Lab of Immunology and Molecular Medicine, School of Medicine, Hangzhou Normal University, Hangzhou, China
| | - Hao Yang
- Department of Basic Medical Science, Key Lab of Immunology and Molecular Medicine, School of Medicine, Hangzhou Normal University, Hangzhou, China
| | - Yun-Man Li
- State Key Laboratory of Natural Medicines, Department of Physiology, China Pharmaceutical University, Nanjing, China
| | - Li-Yun Shi
- Department of Basic Medical Science, Key Lab of Immunology and Molecular Medicine, School of Medicine, Hangzhou Normal University, Hangzhou, China.,Department of Microbiology and Immunology, Nanjing University of Chinese Medicine, Nanjing, China
| |
Collapse
|
238
|
Impact of Enhanced Production of Endogenous Heme Oxygenase-1 by Pitavastatin on Survival and Functional Activities of Bone Marrow-derived Mesenchymal Stem Cells. J Cardiovasc Pharmacol 2016; 65:601-6. [PMID: 25714596 PMCID: PMC4461382 DOI: 10.1097/fjc.0000000000000231] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Although mesenchymal stem cells (MSCs) have a therapeutic potential for the repair of tissue injuries, their poor viability in damaged tissue limits their effectiveness. Statins can induce an increased production of heme oxygenase-1 (HO-1), which may prevent this detrimental effect in MSCs. We investigated the protective effect of statin-induced overexpression of HO-1 by examining changes in gene expression and function in MSCs after pitavastatin treatment. The relative expression of the HO-1 and endothelial nitric oxide synthase genes in MSCs was significantly increased after treatment with pitavastatin (MSCs). Immunocytological analysis showed that MSCs also stained with phospho-Akt. After exposure to oxidative stress, MSCs showed increased resistance to induced cell death compared with control MSCs. Under serum starvation conditions, MSCs treated with 1 μM pitavastatin showed enhanced cell proliferation and a marked increase in vascular endothelial growth factor production compared with control MSCs. Interestingly, MSCs showed enhanced tube formation under both normoxia and hypoxia. These results demonstrate that pitavastatin can enhance endogenous HO-1 expression in MSCs, which may protect the cells into the environment of oxidative stress with partial activation of endothelial nitric oxide synthase and Akt phosphorylation.
Collapse
|
239
|
Bach1 Induces Endothelial Cell Apoptosis and Cell-Cycle Arrest through ROS Generation. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:6234043. [PMID: 27057283 PMCID: PMC4789484 DOI: 10.1155/2016/6234043] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 01/29/2016] [Accepted: 02/04/2016] [Indexed: 12/29/2022]
Abstract
The transcription factor BTB and CNC homology 1 (Bach1) regulates genes involved in the oxidative stress response and cell-cycle progression. We have recently shown that Bach1 impairs cell proliferation and promotes apoptosis in cultured endothelial cells (ECs), but the underlying mechanisms are largely uncharacterized. Here we demonstrate that Bach1 upregulation impaired the blood flow recovery from hindlimb ischemia and this effect was accompanied both by increases in reactive oxygen species (ROS) and cleaved caspase 3 levels and by declines in the expression of cyclin D1 in the injured tissues. We found that Bach1 overexpression induced mitochondrial ROS production and caspase 3-dependent apoptosis and its depletion attenuated H2O2-induced apoptosis in cultured human microvascular endothelial cells (HMVECs). Bach1-induced apoptosis was largely abolished when the cells were cultured with N-acetyl-l-cysteine (NAC), a ROS scavenger. Exogenous expression of Bach1 inhibited the cell proliferation and the expression of cyclin D1, induced an S-phase arrest, and increased the expression of cyclin E2, which were partially blocked by NAC. Taken together, our results suggest that Bach1 suppresses cell proliferation and induces cell-cycle arrest and apoptosis by increasing mitochondrial ROS production, suggesting that Bach1 may be a promising treatment target for the treatment of vascular diseases.
Collapse
|
240
|
Azuma J, Wong RJ, Morisawa T, Hsu M, Maegdefessel L, Zhao H, Kalish F, Kayama Y, Wallenstein MB, Deng AC, Spin JM, Stevenson DK, Dalman RL, Tsao PS. Heme Oxygenase-1 Expression Affects Murine Abdominal Aortic Aneurysm Progression. PLoS One 2016; 11:e0149288. [PMID: 26894432 PMCID: PMC4760983 DOI: 10.1371/journal.pone.0149288] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Accepted: 01/10/2016] [Indexed: 01/29/2023] Open
Abstract
Heme oxygenase-1 (HO-1), the rate-limiting enzyme in heme degradation, is a cytoprotective enzyme upregulated in the vasculature by increased flow and inflammatory stimuli. Human genetic data suggest that a diminished HO-1 expression may predispose one to abdominal aortic aneurysm (AAA) development. In addition, heme is known to strongly induce HO-1 expression. Utilizing the porcine pancreatic elastase (PPE) model of AAA induction in HO-1 heterozygous (HO-1+/-, HO-1 Het) mice, we found that a deficiency in HO-1 leads to augmented AAA development. Peritoneal macrophages from HO-1+/- mice showed increased gene expression of pro-inflammatory cytokines, including MCP-1, TNF-alpha, IL-1-beta, and IL-6, but decreased expression of anti-inflammatory cytokines IL-10 and TGF-beta. Furthermore, treatment with heme returned AAA progression in HO-1 Het mice to a wild-type profile. Using a second murine AAA model (Ang II-ApoE-/-), we showed that low doses of the HMG-CoA reductase inhibitor rosuvastatin can induce HO-1 expression in aortic tissue and suppress AAA progression in the absence of lipid lowering. Our results support those studies that suggest that pleiotropic statin effects might be beneficial in AAA, possibly through the upregulation of HO-1. Specific targeted therapies designed to induce HO-1 could become an adjunctive therapeutic strategy for the prevention of AAA disease.
Collapse
Affiliation(s)
- Junya Azuma
- Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, CA, United States of America
| | - Ronald J. Wong
- Department of Pediatrics, Division of Neonatal and Developmental Medicine, Stanford University School of Medicine, Stanford, CA, United States of America
- * E-mail:
| | - Takeshi Morisawa
- Department of Pediatrics, Division of Neonatal and Developmental Medicine, Stanford University School of Medicine, Stanford, CA, United States of America
| | - Mark Hsu
- Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, CA, United States of America
| | - Lars Maegdefessel
- Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, CA, United States of America
| | - Hui Zhao
- Department of Pediatrics, Division of Neonatal and Developmental Medicine, Stanford University School of Medicine, Stanford, CA, United States of America
| | - Flora Kalish
- Department of Pediatrics, Division of Neonatal and Developmental Medicine, Stanford University School of Medicine, Stanford, CA, United States of America
| | - Yosuke Kayama
- Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, CA, United States of America
- Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, United States of America
| | - Matthew B. Wallenstein
- Department of Pediatrics, Division of Neonatal and Developmental Medicine, Stanford University School of Medicine, Stanford, CA, United States of America
| | - Alicia C. Deng
- Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, CA, United States of America
- Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, United States of America
| | - Joshua M. Spin
- Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, CA, United States of America
- Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, United States of America
| | - David K. Stevenson
- Department of Pediatrics, Division of Neonatal and Developmental Medicine, Stanford University School of Medicine, Stanford, CA, United States of America
| | - Ronald L. Dalman
- Division of Vascular Surgery, Stanford University School of Medicine, Stanford, CA, United States of America
| | - Philip S. Tsao
- Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, CA, United States of America
- Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, United States of America
| |
Collapse
|
241
|
Li L, Tang J, Sun Y, Wu J, Yu P, Wang G. Upregulation of HO-1 Attenuates LPS-Stimulated Proinflammatory Responses Through Downregulation of p38 Signaling Pathways in Rat Ovary. Inflammation 2016; 38:1085-92. [PMID: 25448262 DOI: 10.1007/s10753-014-0074-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Heme oxygenase-1 (HO-1) plays a key role in the regulation of the inflammatory response. However, the specific mechanism underlying the anti-inflammatory role of HO-1 in the reproductive system is unclear. The aim of this study was to evaluate the role of the mechanism of HO-1 in the regulation of the inflammatory response stimulated by lipopolysaccharide (LPS) in rat ovary. LPS-stimulated inflammatory models were established. Rats were pretreated with HO-1 activator (hemin) or inhibitor (ZnPP) before LPS stimulation, and we evaluated the expression of HO-1 by real-time PCR and Western blot. The messenger RNA (mRNA) expression and secretion of IL-1β and IL-6 in rat ovary were analyzed using real-time PCR and ELISA. In addition, we also analyzed the p38 and p-p38 protein expression in the ovary. Our results demonstrate that HO-1 is an anti-inflammatory factor in LPS-stimulated ovary, which regulates the inflammatory response through downregulation of p38 signaling pathways in rat ovary.
Collapse
Affiliation(s)
- Lian Li
- College of Animal Science and Technology, Nanjing Agricultural University, 210095, Nanjing, People's Republic of China,
| | | | | | | | | | | |
Collapse
|
242
|
Bu Y, Chen M, Gao T, Wang X, Li X, Gao F. Mechanisms of hydrocephalus after intraventricular haemorrhage in adults. Stroke Vasc Neurol 2016; 1:23-27. [PMID: 28959460 PMCID: PMC5435187 DOI: 10.1136/svn-2015-000003] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 02/01/2016] [Accepted: 02/02/2016] [Indexed: 11/04/2022] Open
Abstract
Intraventricular haemorrhage (IVH) is defined as the eruption of blood in the cerebroventricular system and occurs mostly secondary to intracerebral haemorrhage (ICH) in adults. Hydrocephalus is a severe complication of IVH that can serve as an independent predictor of increased mortality. In this mini-review, we focus on the mechanisms of hydrocephalus after adult IVH, including blood-clot blockage, barrier impairment, inflammation and blood components, and attempt to reconcile the current research findings into a unified framework. We expect our theoretical framework to help guide future clinical and basic research leading to improved monitoring and intervention for IVH and subsequent hydrocephalus.
Collapse
Affiliation(s)
- Yaoyao Bu
- Department of Neurology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Meiyuan Chen
- Department of Neurology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Ting Gao
- Department of Neurology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Xiao Wang
- Department of Neurology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Xuting Li
- Department of Neurology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Feng Gao
- Department of Neurology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| |
Collapse
|
243
|
Ji X, Damera K, Zheng Y, Yu B, Otterbein LE, Wang B. Toward Carbon Monoxide-Based Therapeutics: Critical Drug Delivery and Developability Issues. J Pharm Sci 2016; 105:406-416. [PMID: 26869408 PMCID: PMC4755352 DOI: 10.1016/j.xphs.2015.10.018] [Citation(s) in RCA: 132] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 10/17/2015] [Accepted: 10/19/2015] [Indexed: 12/20/2022]
Abstract
Carbon monoxide (CO) is an intrinsic signaling molecule with importance on par with that of nitric oxide. During the past decade, pharmacologic studies have amply demonstrated the therapeutic potential of carbon monoxide. However, such studies were mostly based on CO inhalation and metal-based CO-releasing molecules. The field is now at the stage that a major effort is needed to develop pharmaceutically acceptable forms of CO for delivery via various routes such as oral, injection, infusion, or topical applications. This review examines the state of the art, discusses the existing hurdles to overcome, and proposes developmental strategies necessary to address remaining drug delivery issues.
Collapse
Affiliation(s)
- Xingyue Ji
- Department of Chemistry and the Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia, 30303
| | - Krishna Damera
- Department of Chemistry and the Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia, 30303
| | - Yueqin Zheng
- Department of Chemistry and the Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia, 30303
| | - Bingchen Yu
- Department of Chemistry and the Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia, 30303
| | - Leo E Otterbein
- Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, 02215
| | - Binghe Wang
- Department of Chemistry and the Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia, 30303.
| |
Collapse
|
244
|
Galeotti C, Hegde P, Das M, Stephen-Victor E, Canale F, Muñoz M, Sharma VK, Dimitrov JD, Kaveri SV, Bayry J. Heme oxygenase-1 is dispensable for the anti-inflammatory activity of intravenous immunoglobulin. Sci Rep 2016; 6:19592. [PMID: 26796539 PMCID: PMC4726216 DOI: 10.1038/srep19592] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 11/30/2015] [Indexed: 02/06/2023] Open
Abstract
Intravenous immunoglobulin G (IVIG) is used in the therapy of various autoimmune and inflammatory conditions. The mechanisms by which IVIG exerts anti-inflammatory effects are not completely understood. IVIG interacts with numerous components of the immune system including dendritic cells, macrophages, T and B cells and modulate their functions. Recent studies have reported that heme oxygenase-1 (HO-1) pathway plays an important role in the regulation of inflammatory response in several pathologies. Several therapeutic agents exert anti-inflammatory effects via induction of HO-1. Therefore, we aimed at exploring if anti-inflammatory effects of IVIG are mediated via HO-1 pathway. Confirming the previous reports, we report that IVIG exerts anti-inflammatory effects on innate cells as shown by the inhibitory effects on IL-6 and nitric oxide production and confers protection in experimental autoimmune encephalomyelitis (EAE) model. However, these effects were not associated with an induction of HO-1 either in innate cells such as monocytes, dendritic cells and macrophages or in the kidneys and liver of IVIG-treated EAE mice. Also, inhibition of endogenous HO-1 did not modify anti-inflammatory effects of IVIG. These results thus indicate that IVIG exerts anti-inflammatory effects independent of HO-1 pathway.
Collapse
Affiliation(s)
- Caroline Galeotti
- Institut National de la Santé et de la Recherche Médicale Unité 1138, Paris, F-75006, France.,Sorbonne Universités, UPMC Univ Paris 06, UMR S 1138, Paris, F-75006, France.,Centre de Recherche des Cordeliers, Equipe - Immunopathology and therapeutic immunointervention, Paris, F-75006, France.,Department of Pediatric Rheumatology, National Referral Centre of Auto-inflammatory Diseases, CHU de Bicêtre, le Kremlin Bicêtre, F-94270, France
| | - Pushpa Hegde
- Institut National de la Santé et de la Recherche Médicale Unité 1138, Paris, F-75006, France.,Centre de Recherche des Cordeliers, Equipe - Immunopathology and therapeutic immunointervention, Paris, F-75006, France
| | - Mrinmoy Das
- Institut National de la Santé et de la Recherche Médicale Unité 1138, Paris, F-75006, France.,Sorbonne Universités, UPMC Univ Paris 06, UMR S 1138, Paris, F-75006, France.,Centre de Recherche des Cordeliers, Equipe - Immunopathology and therapeutic immunointervention, Paris, F-75006, France
| | - Emmanuel Stephen-Victor
- Institut National de la Santé et de la Recherche Médicale Unité 1138, Paris, F-75006, France.,Sorbonne Universités, UPMC Univ Paris 06, UMR S 1138, Paris, F-75006, France.,Centre de Recherche des Cordeliers, Equipe - Immunopathology and therapeutic immunointervention, Paris, F-75006, France
| | - Fernando Canale
- Institut National de la Santé et de la Recherche Médicale Unité 1138, Paris, F-75006, France.,Centre de Recherche des Cordeliers, Equipe - Immunopathology and therapeutic immunointervention, Paris, F-75006, France
| | - Marcos Muñoz
- Institut National de la Santé et de la Recherche Médicale Unité 1138, Paris, F-75006, France.,Centre de Recherche des Cordeliers, Equipe - Immunopathology and therapeutic immunointervention, Paris, F-75006, France
| | - Varun K Sharma
- Institut National de la Santé et de la Recherche Médicale Unité 1138, Paris, F-75006, France.,Centre de Recherche des Cordeliers, Equipe - Immunopathology and therapeutic immunointervention, Paris, F-75006, France
| | - Jordan D Dimitrov
- Institut National de la Santé et de la Recherche Médicale Unité 1138, Paris, F-75006, France.,Sorbonne Universités, UPMC Univ Paris 06, UMR S 1138, Paris, F-75006, France.,Centre de Recherche des Cordeliers, Equipe - Immunopathology and therapeutic immunointervention, Paris, F-75006, France.,Université Paris Descartes, Sorbonne Paris Cité, UMR S 1138, Paris, F-75006, France
| | - Srini V Kaveri
- Institut National de la Santé et de la Recherche Médicale Unité 1138, Paris, F-75006, France.,Sorbonne Universités, UPMC Univ Paris 06, UMR S 1138, Paris, F-75006, France.,Centre de Recherche des Cordeliers, Equipe - Immunopathology and therapeutic immunointervention, Paris, F-75006, France.,Université Paris Descartes, Sorbonne Paris Cité, UMR S 1138, Paris, F-75006, France.,International Associated Laboratory IMPACT (Institut National de la Santé et de la Recherche Médicale, France - Indian council of Medical Research, India), National Institute of Immunohaematology, Mumbai, 400012, India
| | - Jagadeesh Bayry
- Institut National de la Santé et de la Recherche Médicale Unité 1138, Paris, F-75006, France.,Sorbonne Universités, UPMC Univ Paris 06, UMR S 1138, Paris, F-75006, France.,Centre de Recherche des Cordeliers, Equipe - Immunopathology and therapeutic immunointervention, Paris, F-75006, France.,Université Paris Descartes, Sorbonne Paris Cité, UMR S 1138, Paris, F-75006, France.,International Associated Laboratory IMPACT (Institut National de la Santé et de la Recherche Médicale, France - Indian council of Medical Research, India), National Institute of Immunohaematology, Mumbai, 400012, India
| |
Collapse
|
245
|
Cross-talk between two antioxidants, thioredoxin reductase and heme oxygenase-1, and therapeutic implications for multiple myeloma. Redox Biol 2016; 8:175-85. [PMID: 26795735 PMCID: PMC4732019 DOI: 10.1016/j.redox.2016.01.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 01/05/2016] [Accepted: 01/08/2016] [Indexed: 02/06/2023] Open
Abstract
Multiple myeloma (MM) is characterized by an accumulation of abnormal clonal plasma cells in the bone marrow. Despite recent advancements in anti-myeloma therapies, MM remains an incurable disease. Antioxidant molecules are upregulated in many cancers, correlating with tumor proliferation, survival, and chemoresistance and therefore, have been suggested as potential therapeutic targets. This study investigated the cross-talk between two antioxidant molecules, thioredoxin reductase (TrxR) and heme oxygenase-1 (HO-1), and their therapeutic implications in MM. We found that although auranofin, a TrxR inhibitor, significantly inhibited TrxR activity by more than 50% at lower concentrations, myeloma cell proliferation was only inhibited at higher concentrations of auranofin. Inhibition of TrxR using lower auranofin concentrations induced HO-1 protein expression in myeloma cells. Using a sub-lethal concentration of auranofin to inhibit TrxR activity in conjunction with HO-1 inhibition significantly decreased myeloma cell growth and induced apoptosis. TrxR was shown to regulate HO-1 via the Nrf2 signaling pathway in a ROS-dependent manner. Increased HO-1 mRNA levels were observed in bortezomib-resistant myeloma cells compared to parent cells and HO-1 inhibition restored the sensitivity to bortezomib in bortezomib-resistant myeloma cells. These findings indicate that concurrent inhibition of HO-1 with either a TrxR inhibitor or with bortezomib would improve therapeutic outcomes in MM patients. Hence, our findings further support the need to target multiple antioxidant systems alone or in combination with other therapeutics to improve therapeutic outcomes in MM patients. TrxR inhibition induces HO-1 expression in myeloma cells. Inhibiting TrxR and HO-1 together induces myeloma cell apoptosis. HO-1 serves as a secondary anti-apoptotic mechanism in TrxR-inhibited myeloma cells. HO-1 inhibition overcomes bortezomib resistance in myeloma cells.
Collapse
|
246
|
Ni W, Mao S, Xi G, Keep RF, Hua Y. Role of Erythrocyte CD47 in Intracerebral Hematoma Clearance. Stroke 2016; 47:505-11. [PMID: 26732568 DOI: 10.1161/strokeaha.115.010920] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Accepted: 12/01/2015] [Indexed: 12/30/2022]
Abstract
BACKGROUND AND PURPOSE Enhancing hematoma clearance through phagocytosis may reduce brain injury after intracerebral hemorrhage. In the current study, we investigated the role of cluster of differentiation 47 (CD47) in regulating erythrophagocytosis and brain injury after intracerebral hemorrhage in nude mice. METHODS This study was in 2 parts. First, male adult nude mice had an intracaudate injection of 30 μL saline, blood from male adult wild-type (WT) mice, or blood from CD47 knockout mice. Second, mice had an intracaudate injection of 30 μL CD47 knockout blood with clodronate or control liposomes. Clodronate liposomes were also tested in saline-injected mice. All mice then had magnetic resonance imaging to measure hematoma size and brain swelling. Brains were used for immunohistochemistry and Western blot. RESULTS Erythrophagocytosis occurred in and around the hematoma. Injection of CD47 knockout blood resulted in quicker clot resolution, less brain swelling, and less neurological deficits compared with wild-type blood. Higher brain heme oxygenase-1 levels and more microglial activation (mostly M2 polarized microglia) at day 3 were found after CD47 knockout blood injection. Co-injection of clodronate liposomes, to deplete phagocytes, caused more severe brain swelling and less clot resolution. CONCLUSIONS These results indicated that CD47 has a key role in hematoma clearance after intracerebral hemorrhage.
Collapse
Affiliation(s)
- Wei Ni
- From the Department of Neurosurgery, University of Michigan, Ann Arbor
| | - Shanshan Mao
- From the Department of Neurosurgery, University of Michigan, Ann Arbor
| | - Guohua Xi
- From the Department of Neurosurgery, University of Michigan, Ann Arbor
| | - Richard F Keep
- From the Department of Neurosurgery, University of Michigan, Ann Arbor
| | - Ya Hua
- From the Department of Neurosurgery, University of Michigan, Ann Arbor.
| |
Collapse
|
247
|
Chen QY, Wang GG, Li W, Jiang YX, Lu XH, Zhou PP. Heme Oxygenase-1 Promotes Delayed Wound Healing in Diabetic Rats. J Diabetes Res 2016; 2016:9726503. [PMID: 26798657 PMCID: PMC4699015 DOI: 10.1155/2016/9726503] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Revised: 09/07/2015] [Accepted: 09/13/2015] [Indexed: 12/26/2022] Open
Abstract
Diabetic ulcers are one of the most serious and costly chronic complications for diabetic patients. Hyperglycemia-induced oxidative stress may play an important role in diabetes and its complications. The aim of the study was to explore the effect of heme oxygenase-1 on wound closure in diabetic rats. Diabetic wound model was prepared by making an incision with full thickness in STZ-induced diabetic rats. Wounds from diabetic rats were treated with 10% hemin ointment for 21 days. Increase of HO-1 protein expression enhanced anti-inflammation and antioxidant in diabetic rats. Furthermore, HO-1 increased the levels of VEGF and ICAM-1 and expressions of CBS and CSE protein. In summary, HO-1 promoted the wound closure by augmenting anti-inflammation, antioxidant, and angiogenesis in diabetic rats.
Collapse
MESH Headings
- Administration, Cutaneous
- Angiogenesis Inducing Agents/administration & dosage
- Angiogenic Proteins/metabolism
- Animals
- Anti-Inflammatory Agents/administration & dosage
- Antioxidants/administration & dosage
- Cytokines/metabolism
- Diabetes Mellitus, Experimental/complications
- Diabetes Mellitus, Experimental/enzymology
- Diabetes Mellitus, Experimental/pathology
- Enzyme Induction
- Heme Oxygenase (Decyclizing)/biosynthesis
- Hemin/administration & dosage
- Inflammation Mediators/metabolism
- Male
- Neovascularization, Physiologic/drug effects
- Ointments
- Oxidative Stress/drug effects
- Rats, Sprague-Dawley
- Skin/blood supply
- Skin/drug effects
- Skin/enzymology
- Skin/injuries
- Skin/pathology
- Time Factors
- Wound Healing/drug effects
- Wounds, Penetrating/complications
- Wounds, Penetrating/drug therapy
- Wounds, Penetrating/enzymology
- Wounds, Penetrating/pathology
Collapse
Affiliation(s)
- Qing-Ying Chen
- Medical Department, General Hospital of Jinan Military Command, 25 Shifan Road, Jinan, Shandong 250031, China
- *Qing-Ying Chen: and
| | - Guo-Guang Wang
- Department of Pathophysiology, Wannan Medical College, Wuhu 241002, China
- *Guo-Guang Wang:
| | - Wei Li
- Department of Pathophysiology, Wannan Medical College, Wuhu 241002, China
| | - Yu-Xin Jiang
- Department of Physiology, Wannan Medical College, Wuhu 241002, China
| | - Xiao-Hua Lu
- Department of Pathophysiology, Wannan Medical College, Wuhu 241002, China
| | - Ping-Ping Zhou
- Department of Physiology, Wannan Medical College, Wuhu 241002, China
| |
Collapse
|
248
|
Yeom M, Kim JH, Min JH, Hwang MK, Jung HS, Sohn Y. Xanthii fructus inhibits inflammatory responses in LPS-stimulated RAW 264.7 macrophages through suppressing NF-κB and JNK/p38 MAPK. JOURNAL OF ETHNOPHARMACOLOGY 2015; 176:394-401. [PMID: 26560439 DOI: 10.1016/j.jep.2015.11.020] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 10/12/2015] [Accepted: 11/06/2015] [Indexed: 06/05/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Xanthii fructus (XF) has long been used to treat a variety of inflammatory conditions in Korean traditional medicine, but the underlying mechanisms that could explain the anti-inflammatory actions of XF remain largely unknown. AIM OF THE STUDY This study aimed to elucidate the anti-inflammatory effects of X. fructus (XF) and to examine its underlying molecular mechanisms in lipopolysaccharide (LPS)-stimulated RAW 264.7 macrophages. MATERIALS AND METHODS The effect of XF on LPS-induced mRNA and protein expressions of inflammatory mediators and cytokines were determined. Moreover, the activation of the nuclear factor-κB (NF-κB) and mitogen-activated protein kinase (MAPK) signaling pathways and the expression of heme oxygenase-1 (HO-1) were explored to elucidate the anti-inflammatory mechanisms. RESULTS XF significantly inhibited LPS-induced production of inflammatory mediators, interleukin-6 (IL-6), nitric oxide (NO), and prostaglandin E2 (PGE2), without any cytotoxicity. However, it did not affect tissue necrosis factor (TNF)-α or IL-1β production in LPS-stimulated RAW 264.7 cells. Expression levels of inducible nitric oxide synthase (iNOS) mRNA and protein were inhibited dose-dependently by XF in LPS-stimulated RAW 264.7 cells, but there were no changes in cyclooxygenase-2 (COX-2) mRNA and protein. XF significantly attenuated LPS-induced phosphorylation and degradation of inhibitory kappa Bα (IκBα) and consequently reduced the nuclear translocation of p65 NF-κB. Pretreatment with XF also strongly inhibited the LPS-induced phosphorylation of p38 kinase and JNK, whereas the phosphorylation of ERK1/2 was not affected. In addition, XF led to an increase in HO-1 expression. CONCLUSION Taken together, our findings support that XF inhibits LPS-induced inflammatory responses by blocking NF-κB activation, inhibiting JNK/p38 MAPK phosphorylation, and enhancing HO-1 expression in macrophages, suggesting that it could be an attractive therapeutic candidate for various inflammatory diseases.
Collapse
Affiliation(s)
- Mijung Yeom
- Acupuncture and Meridian Science Research Center, College of Korean Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea
| | - Jae-Hyun Kim
- Department of Anatomy, College of Korean Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea
| | - Ju-Hee Min
- Department of Anatomy, College of Korean Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea
| | - Man Ki Hwang
- Inuri Medical Group, Seoul 137-877, Republic of Korea
| | - Hyuk-Sang Jung
- Department of Anatomy, College of Korean Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea
| | - Youngjoo Sohn
- Department of Anatomy, College of Korean Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea.
| |
Collapse
|
249
|
Wong RJ, Zenclussen AC. Editorial: Heme Oxygenases: Novel Regulators of Reproductive Processes. Front Pharmacol 2015; 6:282. [PMID: 26640438 PMCID: PMC4661693 DOI: 10.3389/fphar.2015.00282] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Accepted: 11/10/2015] [Indexed: 11/13/2022] Open
Affiliation(s)
- Ronald J Wong
- Division of Neonatal and Developmental Medicine, Department of Pediatrics, Stanford University School of Medicine Stanford, CA, USA
| | - Ana C Zenclussen
- Experimental Obstetrics and Gynecology, Medical Faculty, Otto-von-Guericke University, Magdeburg Magdeburg, Germany
| |
Collapse
|
250
|
Choi EY, Choe SH, Hyeon JY, Park HR, Choi JI, Choi IS, Kim SJ. NCX 4040, a nitric oxide-donating aspirin derivative, inhibits Prevotella intermedia lipopolysaccharide-induced production of proinflammatory mediators in murine macrophages. Eur J Pharmacol 2015; 768:87-95. [PMID: 26511379 DOI: 10.1016/j.ejphar.2015.10.032] [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: 07/25/2015] [Revised: 09/15/2015] [Accepted: 10/19/2015] [Indexed: 10/22/2022]
Abstract
In this study, the effects and underlying mechanisms of NCX 4040, a nitric oxide (NO)-donating aspirin derivative, on the production of proinflammatory mediators were examined using murine macrophages exposed to lipopolysaccharide (LPS) from Prevotella intermedia, a pathogen implicated in the etiology of periodontal disease. NCX 4040 significantly reduced P. intermedia LPS-induced production of inducible NO synthase (iNOS)-derived NO, IL-1β and IL-6 as well as their mRNA expression in RAW264.7 cells. Notably, NCX 4040 was much more effective than the parental compound aspirin in reducing LPS-induced production of inflammatory mediators. NCX 4040 induced the expression of heme oxygenase-1 (HO-1) in cells treated with P. intermedia LPS, and the suppressive effect of NCX 4040 on LPS-induced NO production was significantly reversed by SnPP, a competitive HO-1 inhibitor. NCX 4040 did not influence LPS-induced phosphorylation of JNK and p38. IκB-α degradation as well as nuclear translocation and DNA-binding activities of NF-κB p65 and p50 subunits induced by P. intermedia LPS were significantly reduced by NCX 4040. Besides, LPS-induced phosphorylation of STAT1 and STAT3 was significantly down-regulated by NCX 4040. Further, NCX 4040 elevated the SOCS1 mRNA in cells stimulated with LPS. This study indicates that NCX 4040 inhibits P. intermedia LPS-induced production of NO, IL-1β and IL-6 in murine macrophages through anti-inflammatory HO-1 induction and suppression of NF-κB, STAT1 and STAT3 activation, which is associated with the activation of SOCS1 signaling. NCX 4040 could potentially be a promising tool in the treatment of periodontal disease, although further studies are required to verify this.
Collapse
Affiliation(s)
- Eun-Young Choi
- Department of Biological Science, College of Medical and Life Sciences, Silla University, Busan, Korea
| | - So-Hui Choe
- Department of Biological Science, College of Medical and Life Sciences, Silla University, Busan, Korea
| | - Jin-Yi Hyeon
- Department of Biological Science, College of Medical and Life Sciences, Silla University, Busan, Korea
| | - Hae Ryoun Park
- Department of Oral Pathology, School of Dentistry, Pusan National University, Yangsan, Gyeongsangnam-do, Korea; Institute of Translational Dental Sciences, Pusan National University, Yangsan, Gyeongsangnam-do, Korea
| | - Jeom-Il Choi
- Department of Periodontology, School of Dentistry, Pusan National University, Yangsan, Gyeongsangnam-do, Korea; Dental Research Institute, Pusan National University Dental Hospital, Yangsan, Gyeongsangnam-do, Korea
| | - In Soon Choi
- Department of Biological Science, College of Medical and Life Sciences, Silla University, Busan, Korea
| | - Sung-Jo Kim
- Department of Periodontology, School of Dentistry, Pusan National University, Yangsan, Gyeongsangnam-do, Korea; Dental Research Institute, Pusan National University Dental Hospital, Yangsan, Gyeongsangnam-do, Korea; Institute of Translational Dental Sciences, Pusan National University, Yangsan, Gyeongsangnam-do, Korea.
| |
Collapse
|