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Chen X, Zhang X, Chen T, Jiang X, Wang X, Lei H, Wang Y. Inhibition of immunoproteasome promotes angiogenesis via enhancing hypoxia-inducible factor-1α abundance in rats following focal cerebral ischaemia. Brain Behav Immun 2018; 73:167-179. [PMID: 29679638 DOI: 10.1016/j.bbi.2018.04.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 04/08/2018] [Accepted: 04/16/2018] [Indexed: 01/19/2023] Open
Abstract
Angiogenesis after ischemic stroke contributes to the restoration of blood supply in the ischemic zone. Strategies to improve angiogenesis may facilitate the function recovery after stroke. Growing evidence shows that proteasome inhibitors enhance angioneurogenesis and induces a long-term neuroprotection after cerebral ischemia in rodents' models. We have previously reported that inhibition of the immunoproteasome subunit low molecular mass peptide 2 (LMP2) offers a strong neuroprotection in ischemic stroke rats. However, there are no data available to show the relationship between immunoproteasome and angiogenesis under ischemia stroke context. In this study, we identified that inhibition of immunoproteasome LMP2 was able to enhance angiogenesis and facilitate neurological functional recovery in rats after focal cerebral ischemia/reperfusion. In vitro, oxygen-glucose deprivation and reperfusion (OGD/R) significantly enhanced the expression of immunoproteasome LMP2 and proteasome activities in primary culture astrocytes, but these beneficial effects were abolished by knockdown of LMP2 with siRNA transfection. Along with this, protein abundance of HIF-1α was significantly increased by inhibition LMP2 in vivo and in vitro and was associated with angiogenesis and cell fates. However, these beneficial effects were partly abolished by HIF-1α inhibitor 2-methoxyestradiol (2ME). Taken together; this study highlights an important role for inhibition of LMP2 in promoting angiogenesis events in ischemic stroke, and point to HIF-1α as a key mediator of this response, suggesting that immunoproteasome inhibitors may be a promising strategy for stroke treatment.
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Affiliation(s)
- Xingyong Chen
- Department of Neurology, Fujian Provincial Hospital, Fujian Medical University Shengli Clinical College, Fuzhou 350001, PR China.
| | - Xu Zhang
- Department of Neurology, Fujian Provincial Hospital, Fujian Medical University Shengli Clinical College, Fuzhou 350001, PR China.
| | - Ting Chen
- Department of Neurology, Fujian Provincial Hospital, Fujian Medical University Shengli Clinical College, Fuzhou 350001, PR China.
| | - Xiulong Jiang
- Department of Neurology, Fujian Provincial Hospital, Fujian Medical University Shengli Clinical College, Fuzhou 350001, PR China.
| | - Xiaosong Wang
- Department of Neurology, Fujian Provincial Hospital, Fujian Medical University Shengli Clinical College, Fuzhou 350001, PR China.
| | - Huixin Lei
- Department of Neurology, Fujian Provincial Hospital, Fujian Medical University Shengli Clinical College, Fuzhou 350001, PR China.
| | - Yinzhou Wang
- Department of Neurology, Fujian Provincial Hospital, Fujian Medical University Shengli Clinical College, Fuzhou 350001, PR China.
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On the role of the immunoproteasome in transplant rejection. Immunogenetics 2018; 71:263-271. [PMID: 30220008 DOI: 10.1007/s00251-018-1084-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 09/04/2018] [Indexed: 12/14/2022]
Abstract
The immunoproteasome is expressed in cells of hematopoietic origin and is induced during inflammation by IFN-γ. Targeting the immunoproteasome with selective inhibitors has been shown to be therapeutically effective in pre-clinical models for autoimmune diseases, colitis-associated cancer formation, and transplantation. Immunoproteasome inhibition prevents activation and proliferation of lymphocytes, lowers MHC class I cell surface expression, reduces the expression of cytokines of activated immune cells, and curtails T helper 1 and 17 cell differentiation. This might explain the in vivo efficacy of immunoproteasome inhibition in different pre-clinical disease models for autoimmunity, cancer, and transplantation. In this review, we summarize the effect of immunoproteasome inhibition in different animal models for transplantation.
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Matuszczak E, Weremijewicz A, Komarowska M, Sankiewicz A, Markowska D, Debek W, Gorodkiewicz E, Milewski R, Hermanowicz A. Immunoproteasome in the Plasma of Pediatric Patients With Moderate and Major Burns, and Its Correlation With Proteasome and UCHL1 Measured by SPR Imaging Biosensors. J Burn Care Res 2018. [DOI: 10.1093/jbcr/iry011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Ewa Matuszczak
- Department of Pediatric Surgery, Medical University of Bialystok, Poland
| | - Artur Weremijewicz
- Department of Pediatric Surgery, Medical University of Bialystok, Poland
| | - Marta Komarowska
- Department of Pediatric Surgery, Medical University of Bialystok, Poland
| | - Anna Sankiewicz
- Department of Electrochemistry, University of Bialystok, Poland
| | - Diana Markowska
- Department of Electrochemistry, University of Bialystok, Poland
| | - Wojciech Debek
- Department of Pediatric Surgery, Medical University of Bialystok, Poland
| | | | - Robert Milewski
- Department of Statistics, Medical University of Bialystok, Poland
| | - Adam Hermanowicz
- Department of Pediatric Surgery, Medical University of Bialystok, Poland
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Matuszczak E, Sankiewicz A, Debek W, Gorodkiewicz E, Milewski R, Hermanowicz A. Immunoproteasome in the blood plasma of children with acute appendicitis, and its correlation with proteasome and UCHL1 measured by SPR imaging biosensors. Clin Exp Immunol 2017; 191:125-132. [PMID: 28940383 DOI: 10.1111/cei.13056] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/19/2017] [Indexed: 12/19/2022] Open
Abstract
The aim of this study was to determinate the immunoproteasome concentration in the blood plasma of children with appendicitis, and its correlation with circulating proteasome and ubiquitin carboxyl-terminal hydrolase L1 (UCHL1). Twenty-seven children with acute appendicitis, managed at the Paediatric Surgery Department, were included randomly into the study (age 2 years 9 months up to 14 years, mean age 9·5 ± 1 years). There were 10 girls and 17 boys; 18 healthy, age-matched subjects, admitted for planned surgeries served as controls. Mean concentrations of immunoproteasome, 20S proteasome and UCHL1 in the blood plasma of children with appendicitis before surgery 24 h and 72 h after the appendectomy were higher than in the control group. The immunoproteasome, 20S proteasome and UCHL1 concentrations in the blood plasma of patients with acute appendicitis were highest before surgery. The immunoproteasome, 20S proteasome and UCHL1 concentration measured 24 and 72 h after the operation decreased slowly over time and still did not reach the normal range (P < 0·05). There was no statistical difference between immunoproteasome, 20S proteasome and UCHL1 concentrations in children operated on laparoscopically and children after classic appendectomy. The immunoproteasome concentration may reflect the metabolic response to acute state inflammation, and the process of gradual ebbing of the inflammation may thus be helpful in the assessment of the efficacy of treatment. The method of operation - classic open appendectomy or laparoscopic appendectomy - does not influence the general trend in immunoproteasome concentration in children with appendicitis.
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Affiliation(s)
- E Matuszczak
- Paediatric Surgery Department, Medical University of Bialystok, Bialystok, Poland
| | - A Sankiewicz
- Electrochemistry Department, University of Bialystok, Bialystok, Poland
| | - W Debek
- Paediatric Surgery Department, Medical University of Bialystok, Bialystok, Poland
| | - E Gorodkiewicz
- Electrochemistry Department, University of Bialystok, Bialystok, Poland
| | - R Milewski
- Statistics Department, Medical University of Bialystok, Bialystok, Poland
| | - A Hermanowicz
- Paediatric Surgery Department, Medical University of Bialystok, Bialystok, Poland
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Sankiewicz A, Markowska A, Lukaszewski Z, Puzan B, Gorodkiewicz E. Methods for 20S Immunoproteasome and 20S Constitutive Proteasome Determination Based on SPRI Biosensors. Cell Mol Bioeng 2017; 10:174-185. [PMID: 28356996 PMCID: PMC5352758 DOI: 10.1007/s12195-017-0478-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Accepted: 01/17/2017] [Indexed: 11/03/2022] Open
Abstract
The 20S proteasome, released into the circulation, is a novel cancer biomarker. It exists in two forms: the constitutive proteasome (20Sc) and the immunoproteasome (20Si), which both have separate diagnostic significance. The aim of this work was to develop new methods for 20Si and 20Sc determination. Five alternative specific biosensors usable with the surface plasmon resonance imaging (SPRI) technique for 20Si determination have been developed. Specific 20Si entrapment on the biosensor surface from an analyzed solution was achieved by means of an immobilized specific 20Si receptor. Four of the biosensors contain newly synthesized specific 20Si receptors, while the fifth contains the inhibitor ONX 0914. A method for 20Sc determination using an SPRI biosensor containing PSI inhibitor has been developed. By the introduction of an inhibitor blocking 20Si, 20Sc is selectively determined. All of the methods developed for 20Si and 20Sc determination exhibit good selectivity and satisfactory precision, recoveries and dynamic response ranges. 20Si and 20Sc were determined in blood plasma samples from healthy donors and patients with acute leukemia. In the case of these patients 20Si was the major component, and its level was more than one order of magnitude higher than in the healthy donors.
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Affiliation(s)
- Anna Sankiewicz
- Department of Electrochemistry, Institute of Chemistry, University of Bialystok, Ciolkowskiego 1K, 15-245 Bialystok, Poland
| | - Agnieszka Markowska
- Department of Organic Chemistry, Medical University of Bialystok, Kilinskiego 1, 15-089 Bialystok, Poland
| | - Zenon Lukaszewski
- Faculty of Chemical Technology, Poznan University of Technology, pl. Sklodowskiej-Curie 5, 60-965 Poznan, Poland
| | - Beata Puzan
- Department of Electrochemistry, Institute of Chemistry, University of Bialystok, Ciolkowskiego 1K, 15-245 Bialystok, Poland
| | - Ewa Gorodkiewicz
- Department of Electrochemistry, Institute of Chemistry, University of Bialystok, Ciolkowskiego 1K, 15-245 Bialystok, Poland
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