1
|
Schulz JA, Hartz AMS, Bauer B. ABCB1 and ABCG2 Regulation at the Blood-Brain Barrier: Potential New Targets to Improve Brain Drug Delivery. Pharmacol Rev 2023; 75:815-853. [PMID: 36973040 PMCID: PMC10441638 DOI: 10.1124/pharmrev.120.000025] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 03/10/2023] [Accepted: 03/10/2023] [Indexed: 03/29/2023] Open
Abstract
The drug efflux transporters ABCB1 and ABCG2 at the blood-brain barrier limit the delivery of drugs into the brain. Strategies to overcome ABCB1/ABCG2 have been largely unsuccessful, which poses a tremendous clinical problem to successfully treat central nervous system (CNS) diseases. Understanding basic transporter biology, including intracellular regulation mechanisms that control these transporters, is critical to solving this clinical problem.In this comprehensive review, we summarize current knowledge on signaling pathways that regulate ABCB1/ABCG2 at the blood-brain barrier. In Section I, we give a historical overview on blood-brain barrier research and introduce the role that ABCB1 and ABCG2 play in this context. In Section II, we summarize the most important strategies that have been tested to overcome the ABCB1/ABCG2 efflux system at the blood-brain barrier. In Section III, the main component of this review, we provide detailed information on the signaling pathways that have been identified to control ABCB1/ABCG2 at the blood-brain barrier and their potential clinical relevance. This is followed by Section IV, where we explain the clinical implications of ABCB1/ABCG2 regulation in the context of CNS disease. Lastly, in Section V, we conclude by highlighting examples of how transporter regulation could be targeted for therapeutic purposes in the clinic. SIGNIFICANCE STATEMENT: The ABCB1/ABCG2 drug efflux system at the blood-brain barrier poses a significant problem to successful drug delivery to the brain. The article reviews signaling pathways that regulate blood-brain barrier ABCB1/ABCG2 and could potentially be targeted for therapeutic purposes.
Collapse
Affiliation(s)
- Julia A Schulz
- Department of Pharmaceutical Sciences, College of Pharmacy (J.A.S., B.B.), Sanders-Brown Center on Aging and Department of Pharmacology and Nutritional Sciences, College of Medicine (A.M.S.H.), University of Kentucky, Lexington, Kentucky
| | - Anika M S Hartz
- Department of Pharmaceutical Sciences, College of Pharmacy (J.A.S., B.B.), Sanders-Brown Center on Aging and Department of Pharmacology and Nutritional Sciences, College of Medicine (A.M.S.H.), University of Kentucky, Lexington, Kentucky
| | - Björn Bauer
- Department of Pharmaceutical Sciences, College of Pharmacy (J.A.S., B.B.), Sanders-Brown Center on Aging and Department of Pharmacology and Nutritional Sciences, College of Medicine (A.M.S.H.), University of Kentucky, Lexington, Kentucky
| |
Collapse
|
2
|
Shchulkin AV, Abalenikhina YV, Sudakova EA, Mylnikov PY, Yakusheva EN. Mechanisms of Regulation of the P-Glycoprotein Transporter Protein Functioning under the Action of Nitric Oxide. BIOCHEMISTRY. BIOKHIMIIA 2022; 87:366-379. [PMID: 35527375 DOI: 10.1134/s000629792204006x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 03/21/2022] [Accepted: 03/21/2022] [Indexed: 06/14/2023]
Abstract
Mechanisms of regulation of the P-glycoprotein (Pgp) transporter under the action of nitric oxide (NO) were studied in Caco-2 cells. S-Nitrosoglutathione (GSNO) was used as a NO donor, which was added to the cells at concentrations 1, 10, 50, 100, and 500 µM and incubated for 3, 24, or 72 h. The amount of Pgp was analyzed using Western blotting, activity was determined by monitoring transport of its substrate, fexofenadine. The study showed that a short-term exposure to GSNO for 3 h at 500 µM concentration caused increase in the concentration of peroxynitrite in Caco-2 cells, which reduced the activity, but not the amount of Pgp. Increase in the duration of exposure to 24 h increased the amount and activity of Pgp at GSNO concentrations of 10 and 50 µM, increased the amount without increasing activity at 100 µM concentration, and decreased the amount of the transporter protein at 500 µM. Duration of exposure to GSNO of 72 h at concentration of 10 µM resulted in the increase of the amount and activity of Pgp, while at concentration of 100 and 500 µM it decreased the amount of the transport protein. At the same time, it was shown using specific inhibitors that the increase in the amount of Pgp under the influence of low concentrations of GSNO was realized through the NO-cGMP signaling pathway, and the effect of the higher concentration of GSNO and the respective development of nitrosative stress was realized through Nrf2 and the constitutive androstane receptor.
Collapse
|
3
|
Paskaš S, Krajnović T, Basile MS, Dunđerović D, Cavalli E, Mangano K, Mammana S, Al-Abed Y, Nicoletti F, Mijatović S, Maksimović-Ivanić D. Senescence as a main mechanism of Ritonavir and Ritonavir-NO action against melanoma. Mol Carcinog 2019; 58:1362-1375. [PMID: 30997718 DOI: 10.1002/mc.23020] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 03/26/2019] [Accepted: 04/01/2019] [Indexed: 12/19/2022]
Abstract
The main focus of this study is exploring the effect and mechanism of two HIV-protease inhibitors: Ritonavir and Ritonavir-nitric oxide (Ritonavir-NO) on in vitro growth of melanoma cell lines. NO modification significantly improved the antitumor potential of Ritonavir, as the IC50 values of Ritonavir-NO were approximately two times lower than IC50 values of the parental compound. Our results showed for the first time, that both compounds induced senescence in primary and metastatic melanoma cell lines. This transformation was manifested as a change in cell morphology, enlargement of nuclei, increased cellular granulation, upregulation of β-galactosidase activity, lipofuscin granules appearance, higher production of reactive oxygen species and persistent inhibition of proliferation. The expression of p53, as one of the key regulators of senescence, was upregulated after 48 hours of Ritonavir-NO treatment only in metastatic B16F10 cells, ranking it as a late-response event. The development of senescent phenotype was consistent with the alteration of the cytoskeleton-as we observed diminished expression of vinculin, α-actin, and β-tubulin. Permanent inhibition of S6 protein by Ritonavir-NO, but not Ritonavir, could be responsible for a stronger antiproliferative potential of the NO-modified compound. Taken together, induction of senescent phenotype may provide an excellent platform for developing therapeutic approaches based on selective killing of senescent cells.
Collapse
Affiliation(s)
- Svetlana Paskaš
- Department of Immunology, Institute for Biological Research "Siniša Stanković", Belgrade University, Belgrade, Serbia
| | - Tamara Krajnović
- Department of Immunology, Institute for Biological Research "Siniša Stanković", Belgrade University, Belgrade, Serbia
| | - Maria S Basile
- Department of Immunology, Institute for Biological Research "Siniša Stanković", Belgrade University, Belgrade, Serbia.,Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Duško Dunđerović
- Institute of Pathology, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Eugenio Cavalli
- Department of Experimental Neurology, IRCCS Centro Neurolesi "Bonino-Pulejo", Messina, Italy
| | - Katia Mangano
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Santa Mammana
- Department of Experimental Neurology, IRCCS Centro Neurolesi "Bonino-Pulejo", Messina, Italy
| | - Yousef Al-Abed
- Center for Molecular Innovation, The Feinstein Institute for Medical Research, Manhasset, New York
| | - Ferdinando Nicoletti
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Sanja Mijatović
- Department of Immunology, Institute for Biological Research "Siniša Stanković", Belgrade University, Belgrade, Serbia
| | - Danijela Maksimović-Ivanić
- Department of Immunology, Institute for Biological Research "Siniša Stanković", Belgrade University, Belgrade, Serbia
| |
Collapse
|
4
|
Abd Ellah NH, Taylor L, Ayres N, Elmahdy MM, Fetih GN, Jones HN, Ibrahim EA, Pauletti GM. NF-κB decoy polyplexes decrease P-glycoprotein-mediated multidrug resistance in colorectal cancer cells. Cancer Gene Ther 2016; 23:149-55. [PMID: 27125866 DOI: 10.1038/cgt.2016.17] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 02/14/2016] [Accepted: 02/26/2016] [Indexed: 11/09/2022]
Abstract
Multidrug resistance (MDR), a major cause for chemotherapy failure, has been linked to upregulation of ATP-dependent membrane efflux systems that limit intracellular accumulation of cytotoxic anticancer agents. P-glycoprotein (P-gp) encoded by the human ABCB1 gene was the first efflux transporter identified to contribute to MDR. ABCB1 gene expression is correlated with constitutive activation of the NF-κB signaling pathway in tumor cells. The objective of this research is to modulate P-gp activity in colon cancer cells using NF-κB decoy oligodeoxynucleotides (ODNs) that are effectively delivered into the nucleus of colorectal cancer cells by self-assembling nonviral nanoparticles comprising the novel poly[N-(2-hydroxypropyl)methacrylamide]-poly(N,N-dimethylaminoethylmethacrylate) diblock copolymer (pHPMA-b-pDMAEMA). Ethidium bromide intercalation and gel retardation assays demonstrated high DNA condensation capacity of pHPMA-b-pDMAEMA. Nanoparticles prepared with and without decoy ODNs did not significantly compromise cellular safety at N/P ratios ⩽4. Transfection efficiency of pHPMA-b-pDMAEMA polyplexes (N/P=4) in Caco-2 cells was comparable to TurboFect transfection standard, resulting in a 98% reduction in P-gp protein levels. As a pharmacodynamic consequence, intracellular accumulation of the P-gp substrate Rhodamine123 significantly increased by almost twofold. In conclusion, NF-κB ODN polyplexes fabricated with pHPMA-b-pDMAEMA polymer effectively reduced P-gp-mediated efflux activity in Caco-2 cells, suggesting successful interference with NF-κB-binding sites in the promoter region of the ABCB1 gene.
Collapse
Affiliation(s)
- N H Abd Ellah
- James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH, USA.,Faculty of Pharmacy, Assiut University, Assiut, Arab Republic of Egypt
| | - L Taylor
- Department of Chemistry, University of Cincinnati, Cincinnati, OH, USA
| | - N Ayres
- Department of Chemistry, University of Cincinnati, Cincinnati, OH, USA
| | - M M Elmahdy
- Faculty of Pharmacy, Assiut University, Assiut, Arab Republic of Egypt
| | - G N Fetih
- Faculty of Pharmacy, Assiut University, Assiut, Arab Republic of Egypt
| | - H N Jones
- Division of General and Thoracic Surgery and Reproductive Sciences, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - E A Ibrahim
- Faculty of Pharmacy, Assiut University, Assiut, Arab Republic of Egypt
| | - G M Pauletti
- James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH, USA
| |
Collapse
|
5
|
Lee NY, Rieckmann P, Kang YS. The Changes of P-glycoprotein Activity by Interferon-γ and Tumor Necrosis Factor-α in Primary and Immortalized Human Brain Microvascular Endothelial Cells. Biomol Ther (Seoul) 2013; 20:293-8. [PMID: 24130926 PMCID: PMC3794526 DOI: 10.4062/biomolther.2012.20.3.293] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Revised: 04/23/2012] [Accepted: 04/25/2012] [Indexed: 12/25/2022] Open
Abstract
The purpose of this study was to investigate the modification of expression and functionality of the drug transporter P-glycoprotein (P-gp) by tumor necrosis factor-alpha (TNF-α) and interferon-gamma (IFN-γ) at the blood-brain barrier (BBB). We used immortalized human brain microvessel endothelial cells (iHBMEC) and primary human brain microvessel endothelial cells (pHBMEC) as in vitro BBB model. To investigate the change of p-gp expression, we carried out real time PCR analysis and Western blotting. To test the change of p-gp activity, we performed rhodamin123 (Rh123) accumulation study in the cells. In results of real time PCR analysis, the P-gp mRNA expression was increased by TNF-α or IFN-γ treatment for 24 hr in both cell types. However, 48 hr treatment of TNF-α or IFN-γ did not affect P-gp mRNA expression. In addition, co-treatment of TNF-α and IFN-γ markedly increased the P-gp mRNA expression in both cells. TNF-α or IFN-γ did not influence P-gp protein expression whatever the concentration of cytokines or duration of treatment in both cells. However, P-gp expression was increased after treatments of both cytokines together in iHBMEC cells only compared with untreated control. Furthermore, in both cell lines, TNF-α or IFN-γ induced significant decrease of P-gp activity for 24 hr treatment. And, both cytokines combination treatment also decreased significantly P-gp activity. These results suggest that P-gp expression and function at the BBB is modulated by TNF-α or/and IFN-γ. Therefore, the distribution of P-gp depending drugs in the central nervous system can be modulated by neurological inflammatory diseases.
Collapse
Affiliation(s)
- Na-Young Lee
- College of Pharmacy, Research Center for Cell Fate Control, Sookmyung Women's University, Seoul 140-742, Republic of Korea
| | | | | |
Collapse
|
6
|
Knops N, Levtchenko E, van den Heuvel B, Kuypers D. From gut to kidney: transporting and metabolizing calcineurin-inhibitors in solid organ transplantation. Int J Pharm 2013; 452:14-35. [PMID: 23711732 DOI: 10.1016/j.ijpharm.2013.05.033] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Revised: 05/08/2013] [Accepted: 05/10/2013] [Indexed: 12/14/2022]
Abstract
Since their introduction circa 35 years ago, calcineurin-inhibitors (CNI) have become the cornerstone of immunosuppressive therapy in solid organ transplantation. However, CNI's possess a narrow therapeutic index with potential severe consequences of drug under- or overexposure. This demands a meticulous policy of Therapeutic Drug Monitoring (TDM) to optimize outcome. In clinical practice optimal dosing is difficult to achieve due to important inter- and intraindividual variation in CNI pharmacokinetics. A complex and often interdependent set of factors appears relevant in determining drug exposure. These include recipient characteristics such as age, race, body composition, organ function, and food intake, but also graft-related characteristics such as: size, donor-age, and time after transplantation can be important. Fundamental (in vitro) and clinical studies have pointed out the intrinsic relation between the aforementioned variables and the functional capacity of enzymes and transporters involved in CNI metabolism, primarily located in intestine, liver and kidney. Commonly occurring polymorphisms in genes responsible for CNI metabolism (CYP3A4, CYP3A5, CYP3A7, PXR, POR, ABCB1 (P-gp) and possibly UGT) are able to explain an important part of interindividual variability. In particular, a highly prevalent SNP in CYP3A5 has proven to be an important determinant of CNI dose requirements and drug-dose-interactions. In addition, a discrepancy in genotype between graft and receptor has to be taken into account. Furthermore, common phenomena in solid organ transplantation such as inflammation, ischemia- reperfusion injury, graft function, co-medication, altered food intake and intestinal motility can have a differential effect on the expression enzymes and transporters involved in CNI metabolism. Notwithstanding the built-up knowledge, predicting individual CNI pharmacokinetics and dose requirements on the basis of current clinical and experimental data remains a challenge.
Collapse
Affiliation(s)
- Noël Knops
- Department of Pediatric Nephrology and Solid Organ Transplantation, University Hospitals Leuven, Belgium.
| | | | | | | |
Collapse
|
7
|
Lee NY, Kang YS. The decrease of paclitaxel efflux by pretreatment of interferon-γ and tumor necrosis factor-α after intracerebral microinjection. Brain Res 2013; 1499:158-62. [PMID: 23313612 DOI: 10.1016/j.brainres.2013.01.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Revised: 11/26/2012] [Accepted: 01/03/2013] [Indexed: 11/18/2022]
Abstract
Paclitaxel is highly efficacious in the treatment of patients suffering from a broad spectrum of neoplastic diseases. However, its efficacy against malignant glioma is very moderate. Paclitaxel is known to be a substrate for P-glycoprotein (P-gp), so this transporter may be due to insufficient access of paclitaxel to the brain. First, we investigated the brain-to-blood transport of paclitaxel across the blood-brain barrier (BBB) using the brain efflux index method. [(3)H]Paclitaxel was eliminated from rat brain with an efflux transport rate of 1.87×10(-2)±0.16×10(-2)min(-1). The elimination of [(3)H]paclitaxel was inhibited by unlabeled paclitaxel and verapamil, suggesting a carrier-mediated transport process via P-gp. Furthermore, TNF-α and IFN-γ induced significant decrease of paclitaxel efflux 1 and 24h pre-treatment. These results suggest that P-gp efflux function at the BBB is reduced by TNF-α and IFN-γ. Therefore, the distribution of P-gp dependant drugs including paclitaxel in the central nervous system can be modulated by neurological diseases.
Collapse
Affiliation(s)
- Na-Young Lee
- College of Pharmacy and Research Center for Cell Fate Control, Sookmyung Women's University, Seoul 140-742, Korea
| | | |
Collapse
|
8
|
Kobori T, Harada S, Nakamoto K, Tokuyama S. Functional Alterations of Intestinal P-Glycoprotein under Diabetic Conditions. Biol Pharm Bull 2013; 36:1381-90. [DOI: 10.1248/bpb.b13-00369] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Takuro Kobori
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University
| | - Shinichi Harada
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University
| | - Kazuo Nakamoto
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University
| | - Shogo Tokuyama
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University
| |
Collapse
|
9
|
Duan R, Hu N, Liu HY, Li J, Guo HF, Liu C, Liu L, Liu XD. Biphasic regulation of P-glycoprotein function and expression by NO donors in Caco-2 cells. Acta Pharmacol Sin 2012; 33:767-74. [PMID: 22543702 DOI: 10.1038/aps.2012.25] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
AIM To investigate the effects of nitric oxide (NO) donors on the function and expression of P-glycoprotein (P-gp) in Caco-2 cells. METHODS Caco-2 cells were exposed to NO donors for designated times. P-gp function and expression were assessed using Rhodamine123 uptake assay and Western blotting, respectively. Intracellular reactive oxygen species (iROS) and intracellular reactive nitrogen species (iRNS) levels were measured using ROS and RNS assay kits, respectively. RESULTS Exposure of Caco-2 cells to 0.1 or 2 mmol/L of sodium nitroprusside (SNP) affected the function and expression of P-gp in concentration- and time-dependent manners. A short-term (4 h) exposure reduced P-gp function and expression accompanied with significantly increased levels of iROS and iRNS. In contrast, a long-term (24 h) exposure stimulated the P-gp function and expression. The stimulatory effects of 2 mmol/L SNP was less profound as compared to those caused by 0.1 mmol/L SNP. The other NO donors SIN-1 and SNAP showed similar effects. Neither the NO scavenger PTIO (2 mmol/L) nor soluble guanylate cyclase inhibitor ODQ (50 μmol/L) reversed the SNP-induced alteration of P-gp function. On the other hand, free radical scavengers ascorbate, glutathione and uric acid (2 mmol/L for each), PKC inhibitor chelerythrine (5 μmol/L), PI3K/Akt inhibitor wortmannin (1 μmol/L) and p38 MAPK inhibitor SB203580 (10 μmol/L) reversed the upregulation of P-gp function by the long-term exposure to SNP, but these agents had no effect on the impaired P-gp function following the short-term exposure to SNP. CONCLUSION NO donors time-dependently regulate P-gp function and expression in Caco-2 cells: short-term exposure impairs P-gp function and expression, whereas long-term exposure stimulates P-gp function and expression. The regulation occurs via a NO-independent mechanism.
Collapse
|
10
|
The associations of IL-18 serum levels and promoter polymorphism with tacrolimus pharmacokinetics and hepatic allograft dysfunction in Chinese liver transplantation recipients. Gene 2012; 491:251-5. [DOI: 10.1016/j.gene.2011.10.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2011] [Revised: 09/26/2011] [Accepted: 10/01/2011] [Indexed: 01/28/2023]
|
11
|
Robertson SJ, Mokgokong R, Kania KD, Guedj AS, Hladky SB, Barrand MA. Nitric oxide contributes to hypoxia-reoxygenation-induced P-glycoprotein expression in rat brain endothelial cells. Cell Mol Neurobiol 2011; 31:1103-11. [PMID: 21618049 DOI: 10.1007/s10571-011-9711-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Accepted: 05/13/2011] [Indexed: 11/29/2022]
Abstract
Ischemia-reperfusion leads to increased levels at the blood-brain barrier of the multidrug efflux transporter, P-glycoprotein that provides protection to the brain by limiting access of unwanted substances. This is coincident with the production of nitric oxide. This present study using immortalized rat brain endothelial cells (GPNTs) examines whether following hypoxia-reoxygenation, nitric oxide contributes to the alterations in P-glycoprotein levels. After 6 h of hypoxia, both nitric oxide and reactive oxygen species, detected intracellularly using fluorescent monitoring dyes, were produced in the subsequent reoxygenation phase coincident with increased P-glycoprotein. The evidence that nitric oxide can directly affect P-glycoprotein expression was sought by applying S-nitroso-N-acetyl-DL: -penicillamine that as shown increased the nitric oxide generation. Sodium nitroprusside, though more effective at increasing P-glycoprotein expression, appeared to produce different reactive species. Real time RT-PCR analysis revealed the predominant form of nitric oxide synthase in these cells to be endothelial, inhibition of which partially prevented the increase in P-glycoprotein during reoxygenation. These data indicate that the production of nitric oxide by endothelial nitric oxide synthase during reoxygenation can influence P-glycoprotein expression in cells of the blood-rat brain barrier, highlighting another route by which nitric oxide may protect the brain.
Collapse
Affiliation(s)
- Samantha J Robertson
- Department of Pharmacology, University of Cambridge, Tennis Court Road, Cambridge CB2 1PD, UK
| | | | | | | | | | | |
Collapse
|
12
|
Fujiya M, Inaba Y, Musch MW, Hu S, Kohgo Y, Chang EB. Cytokine regulation of OCTN2 expression and activity in small and large intestine. Inflamm Bowel Dis 2011; 17:907-16. [PMID: 20722056 PMCID: PMC2990793 DOI: 10.1002/ibd.21444] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2010] [Accepted: 07/13/2010] [Indexed: 12/21/2022]
Abstract
BACKGROUND The organic cation transporter OCTN2 is located on the IBD5 risk allele and has been implicated in the pathogenesis of inflammatory bowel diseases (IBD). OCTN2 is expressed in the apical membrane and transports many solutes including bacteria-derived mediators that may be involved in host-microbial interactions. To explore its role further, we examined potential regulatory factors in human IBD and in experimental models of OCTN2 expression. METHODS Human colonic epithelial cells (Caco2BBE) were used to investigate the effects of inflammatory mediators on OCTN2 activity and expression. Apical membrane expression of OCTN2 was assessed by surface biotinylation. Rag-1(-/-) -deficient mice were used to determine the potential role of adaptive immune cells in the regulation of OCTN2 expression. C57Bl/6 mice were treated with the cytokines interferon-gamma (IFN-γ) and tumor necrosis factor-alpha (TNF-α) to determine the effects on OCTN2 expression and activity. OCTN2 expression in human IBD specimens was assessed by Western blotting and immunohistochemistry. RESULTS OCTN2 activity and expression are regulated by the state of intestinal inflammation. OCTN2 expression in colonic tissues of Rag-1(-/-) -deficient mice was reduced. Treatment with IFN-γ and TNF-α increased intestinal OCTN2 expression, particularly in the colon. IFN-γ increased both total and apical membrane expression of Caco2BBE OCTN2, whereas TNF-α stimulated apical expression. Colonic epithelial OCTN2 expression was increased in actively inflamed areas of both Crohn's disease and ulcerative colitis. CONCLUSIONS Intestinal epithelial OCTN2 expression is increased by intestinal inflammation, most likely through increased levels of proinflammatory cytokines. These findings suggest that OCTN2 may participate to restoration of intestinal homeostasis under conditions of inflammation-associated stress.
Collapse
Affiliation(s)
- Mikihiro Fujiya
- Department of Gastroenterology, Hepatology, and Life Style Diseases, Asahikawa Medical School, Asahikawa, Japan
| | - Yuhei Inaba
- Department of Medicine, Knapp Center for Biomedical Discovery, University of Chicago, Chicago Illinois
| | - Mark W. Musch
- Department of Medicine, Knapp Center for Biomedical Discovery, University of Chicago, Chicago Illinois
| | - Shien Hu
- Department of Medicine, Knapp Center for Biomedical Discovery, University of Chicago, Chicago Illinois
| | - Yutaka Kohgo
- Department of Gastroenterology, Hepatology, and Life Style Diseases, Asahikawa Medical School, Asahikawa, Japan
| | - Eugene B. Chang
- Department of Medicine, Knapp Center for Biomedical Discovery, University of Chicago, Chicago Illinois,To Whom Correspondence Should be addressed: Eugene B. Chang, M. D., Martin Boyer Professor of Medicine, Department of Medicine, MC 6084, The University of Chicago, 5841 S. Maryland Ave., Chicago, IL, 60637, Phone: 773-702-6458 fax: 773 702-2281,
| |
Collapse
|
13
|
Takizawa Y, Kishimoto H, Kitazato T, Tomita M, Hayashi M. Effects of nitric oxide on mucosal barrier dysfunction during early phase of intestinal ischemia/reperfusion. Eur J Pharm Sci 2011; 42:246-52. [DOI: 10.1016/j.ejps.2010.11.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2010] [Revised: 10/26/2010] [Accepted: 11/26/2010] [Indexed: 10/18/2022]
|
14
|
Nawa A, Fujita-Hamabe W, Tokuyama S. Regulatory Action of Nitric Oxide Synthase on Ileal P-glycoprotein Expression under Streptozotocin-Induced Diabetic Condition. Biol Pharm Bull 2011; 34:436-8. [DOI: 10.1248/bpb.34.436] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Ayaka Nawa
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University
| | - Wakako Fujita-Hamabe
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University
| | - Shogo Tokuyama
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University
| |
Collapse
|
15
|
Regulation of P-glycoprotein in renal proximal tubule epithelial cells by LPS and TNF-alpha. J Biomed Biotechnol 2010; 2010:525180. [PMID: 20300455 PMCID: PMC2841251 DOI: 10.1155/2010/525180] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2009] [Revised: 11/13/2009] [Accepted: 12/08/2009] [Indexed: 02/04/2023] Open
Abstract
During endotoxemia, the ATP-dependent drug efflux pump P-glycoprotein (Abcb1/P-gp) is upregulated in kidney proximal tubule epithelial cells. The signaling pathway through which lipopolysaccharide (LPS) or tumor necrosis factor-α (TNF-α) regulates P-gp expression and activity was investigated further in the present study. Exposure of rat kidney proximal tubule cells to TNF-α alone or TNF-α and LPS increased P-gp gene and protein expression levels and efflux activity, suggesting de novo P-gp synthesis. Upon exposure to TNF-α in combination with LPS, P-gp activity in renal proximal tubule cells is increased under influence of nitric oxide (NO) produced by inducible NO synthase. Upon exposure to TNF-α alone, P-gp upregulation seems to involve TLR4 activation and nuclear factor kappaB (NF-κB) translocation, a pathway that is likely independent of NO. These findings indicate that at least two pathways regulate P-gp expression in the kidney during endotoxemia.
Collapse
|
16
|
Zídek Z, Anzenbacher P, Kmonícková E. Current status and challenges of cytokine pharmacology. Br J Pharmacol 2009; 157:342-61. [PMID: 19371342 PMCID: PMC2707982 DOI: 10.1111/j.1476-5381.2009.00206.x] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2008] [Revised: 01/13/2009] [Accepted: 01/19/2009] [Indexed: 12/12/2022] Open
Abstract
The major concern of pharmacology about cytokines has originated from plentiful data showing association between gross changes in their production and pathophysiological processes. Despite the enigmatic role of cytokines in diseases, a number of them have become a subject of cytokine and anti-cytokine immunotherapies. Production of cytokines can be influenced by many endogenous and exogenous stimuli including drugs. Cells of the immune system, such as macrophages and lymphocytes, are richly endowed with receptors for the mediators of physiological functions, such as biogenic amines, adenosine, prostanoids, steroids, etc. Drugs, agonists or antagonists of these receptors can directly or indirectly up- and down-regulate secretion of cytokines and expression of cytokine receptors. Vice versa, cytokines interfere with drug pharmacokinetics and pharmacodynamics through the interactions with cytochrome P450 and multiple drug resistance proteins. The aim of the review is to encourage more intensive studies in these fields of cytokine pharmacology. It also outlines major areas of searching promising candidates for immunotherapeutic interventions.
Collapse
Affiliation(s)
- Z Zídek
- Department of Pharmacology, Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, v.v.i., Vídenská 1083, 142 20 Prague 4, Czech Republic.
| | | | | |
Collapse
|
17
|
Ronaldson PT, Persidsky Y, Bendayan R. Regulation of ABC membrane transporters in glial cells: Relevance to the pharmacotherapy of brain HIV-1 infection. Glia 2008; 56:1711-35. [DOI: 10.1002/glia.20725] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
18
|
Kimura A, Ishida Y, Hayashi T, Wada T, Yokoyama H, Sugaya T, Mukaida N, Kondo T. Interferon-gamma plays protective roles in sodium arsenite-induced renal injury by up-regulating intrarenal multidrug resistance-associated protein 1 expression. THE AMERICAN JOURNAL OF PATHOLOGY 2006; 169:1118-28. [PMID: 17003472 PMCID: PMC1780179 DOI: 10.2353/ajpath.2006.060024] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Subcutaneous injection of sodium arsenite (NaAs, 12.5 mg/kg) into BALB/c [wild-type (WT)] mice causes acute renal dysfunction characterized by severe hemorrhages, acute tubular necrosis, and cast formation, with increases in serum blood urea nitrogen and creatinine levels. Concomitant enhancement in intrarenal interferon (IFN)-gamma expression prompted us to examine its roles in this pathology. IFN-gamma-deficient (IFN-gamma-/-) mice exhibited higher serum blood urea nitrogen and creatinine levels and exaggerated histopathological changes, compared with WT mice. Eventually, IFN-gamma-/- mice exhibited a high mortality (87.5%) within 24 hours after NaAs challenge, whereas most WT mice survived. The intrarenal arsenic concentration was significantly higher in IFN-gamma-/- mice later than 10 hours after NaAs treatment, with attenuated intrarenal expression of multidrug resistance-associated protein (MRP) 1, a main transporter for NaAs efflux, compared with WT mice. NF-E2-related factor (Nrf) 2 protein, a transcription factor crucial for MRP1 gene expression, was similarly increased in the kidneys of both strains of mice after NaAs treatment. In contrast, the absence of IFN-gamma augmented transforming growth factor-beta-Smad3 signal pathway and eventually enhanced the expression of activating transcription factor 3, which is presumed to repress Nrf2-mediated MRP1 gene expression. Thus, IFN-gamma can protect against NaAs-induced acute renal injury, probably by maintaining Nrf2-mediated intrarenal MRP1 gene expression.
Collapse
Affiliation(s)
- Akihiko Kimura
- Department of Forensic Medicine, Wakayama Medical University, 811-1 Kimiidera, Wakayama 641-8509, Japan.
| | | | | | | | | | | | | | | |
Collapse
|
19
|
Park SG, Ryu HM, Lim SO, Kim YI, Hwang SB, Jung G. Interferon-gamma inhibits hepatitis B virus-induced NF-kappaB activation through nuclear localization of NF-kappaB-inducing kinase. Gastroenterology 2005; 128:2042-53. [PMID: 15940636 DOI: 10.1053/j.gastro.2005.03.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND & AIMS Nuclear factor-kappaB (NF-kappaB) signaling pathway is an important regulating pathway in liver diseases, including hepatocellular carcinoma. In our study, immunohistochemical analysis showed that NF-kappaB-inducing kinase (NIK), an upstream kinase of IkappaB kinases, nuclear localization occurs only in liver tissues obtained from hepatitis B surface antigen (HBsAg)(+) patients but not in tissues from HBsAg(-) patients. The aim of the present study was to identify the inducer of NIK nuclear localization and determine whether the NIK nuclear localization affects the hepatitis B virus (HBV)-mediated NF-kappaB activation. METHODS The experiments were performed on HepG2.2.15 cells and on HepG2 cells transfected with pHBV1.2x, a plasmid encoding all HBV messages, using NF-kappaB-dependent luciferase reporter gene assay, electrophoretic mobility shift assay, immunoblot analysis, and fluorescent microscopy analysis. RESULTS HBV induced NIK-dependent NF-kappaB activation. However, interferon (IFN)-gamma induced NIK nuclear localization and inhibited NF-kappaB activation in HepG2.2.15 cells and in HepG2 cells transfected with pHBV1.2x. When NIK nuclear localization was inhibited by deletion of nuclear localization signal on NIK, IFN-gamma did not induce the NIK nuclear localization and did not inhibit NF-kappaB activation. CONCLUSIONS IFN-gamma selectively inhibits HBV-mediated NF-kappaB activation. This inhibition is accomplished by NIK nuclear localization, which is a novel mechanism of NF-kappaB inhibition.
Collapse
Affiliation(s)
- Sung Gyoo Park
- School of Biological Sciences, Seoul National University, Korea
| | | | | | | | | | | |
Collapse
|