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Song XH, Tang J, Gao TT, Xu XF, Yang HX, Wu K, Yang CG, Cheng ZQ, Sun BY. Interleukin-12 receptor β2 from grass carp: Molecular characterization and its involvement in Aeromonas hydrophila-induced intestinal inflammation. FISH & SHELLFISH IMMUNOLOGY 2019; 87:226-234. [PMID: 30641187 DOI: 10.1016/j.fsi.2019.01.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 12/26/2018] [Accepted: 01/10/2019] [Indexed: 06/09/2023]
Abstract
Interleukin-12 receptor β2 (IL-12Rβ2) is a signaling subunit of heterodimeric receptors for IL-12 and IL-35. It plays important regulatory functions in the development of Th1 cells and in the expression of inflammatory cytokines in mammals and other higher vertebrates. However, little is known about IL-12Rβ2 in teleost fish. In this work, we have cloned and characterized IL-12Rβ2 from grass carp (Ctenopharyngodon idella). The full-length cDNA of grass carp IL-12Rβ2 is 2875 bp, which encodes a mature protein with 741 amino acids. This mature protein contains three fibronectin type III domains, a transmembrane helix, and CXW and WSXWS-like motifs that are characteristic of the type I cytokine receptor family. Phylogenetic analysis revealed that cyprinid fish IL-12Rβ2 formed a single branch, clearly separated from those of other vertebrates. We expressed and purified a recombinant grass carp IL-12Rβ2 protein containing major antigenic regions, which was used to raise a polyclonal antibody. The specificity of the antibody was assessed by Western blotting analysis of whole cell lysates from Escherichia coli cells expressing the recombinant IL-12Rβ2, grass carp intestinal intraepithelial lymphocytes, and cultured C. idella kidney cells. To explore the potential regulatory role of IL-12Rβ2 in inflammation, we generated an intestinal inflammation model by anal intubation of fish with Aeromonas hydrophila. Immunohistochemical staining of the inflamed intestines revealed that IL-12Rβ2 expression is consistent with inflammatory cell recruitment during intestinal inflammation. Real-time quantitative PCR revealed that IL-12Rβ2 is widely expressed in normal tissues and is up-regulated in most tissues after infecting with A. hydrophila. We found that IL-12Rβ2, IL-12p35, and interferon-γ were expressed in similar patterns in the intestines during inflammation. Taken together, our results suggest that IL-12Rβ2 is involved in the regulation of intestinal inflammation.
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Affiliation(s)
- Xue-Hong Song
- School of Biology and Basic Medical Sciences, Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu, 215123, China
| | - Jian Tang
- School of Biology and Basic Medical Sciences, Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu, 215123, China
| | - Tian-Tian Gao
- School of Biology and Basic Medical Sciences, Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu, 215123, China
| | - Xu-Fang Xu
- School of Biology and Basic Medical Sciences, Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu, 215123, China
| | - Hui-Xing Yang
- School of Biology and Basic Medical Sciences, Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu, 215123, China
| | - Kang Wu
- School of Biology and Basic Medical Sciences, Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu, 215123, China
| | - Cai-Gen Yang
- School of Biology and Basic Medical Sciences, Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu, 215123, China
| | - Zhong-Qin Cheng
- School of Biology and Basic Medical Sciences, Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu, 215123, China
| | - Bing-Yao Sun
- School of Biology and Basic Medical Sciences, Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu, 215123, China.
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Cicchelero L, Denies S, Vanderperren K, Stock E, Van Brantegem L, de Rooster H, Sanders NN. Immunological, anti-angiogenic and clinical effects of intratumoral interleukin 12 electrogene therapy combined with metronomic cyclophosphamide in dogs with spontaneous cancer: A pilot study. Cancer Lett 2016; 400:205-218. [PMID: 27693635 DOI: 10.1016/j.canlet.2016.09.015] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 09/08/2016] [Accepted: 09/13/2016] [Indexed: 12/18/2022]
Abstract
The immunological, anti-angiogenic and clinical effects of metronomic cyclophosphamide and 3 consecutive intratumoral interleukin (IL)-12 gene therapy (electrogene therapy (EGT)) treatments were evaluated in 6 dogs with spontaneous cancer. In all dogs, a decrease in peripheral leukocytes 2 days after IL-12 EGT coincided with erythema and swelling of the tumor. In the tumor, a transient increase in IL-12 levels was measured, whereas a continuous increase in interferon γ (IFNγ) and thrombospondin 1 (TSP-1) were determined in contrast to a continuous decrease in vascular endothelial growth factor (VEGF). In the serum, a transient increase in IL-12 and IL-10 levels were noted in contrast to a transient decrease in VEGF and TSP-1. The treatment resulted in a significant anti-angiogenic effect. Although all primary tumors continued to progress in time, this progression was slower than before treatment according to the contrast-enhanced ultrasound data. Besides the encouraging immunostimulatory and anti-angiogenic effects observed in all dogs we also noticed in 4 out of 6 dogs clinically relevant improvements in quality of life and weight. These results hold great promise for combinatorial strategies of IL-12 EGT and metronomic chemotherapy with conventional antitumor (immuno)therapies.
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Affiliation(s)
- Laetitia Cicchelero
- Laboratory of Gene Therapy, Department of Nutrition, Genetics and Ethology, Faculty of Veterinary Medicine, Ghent University, Heidestraat 19, B-9820 Merelbeke, Belgium
| | - Sofie Denies
- Laboratory of Gene Therapy, Department of Nutrition, Genetics and Ethology, Faculty of Veterinary Medicine, Ghent University, Heidestraat 19, B-9820 Merelbeke, Belgium
| | - Katrien Vanderperren
- Department of Medical Imaging of Domestic Animals, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium
| | - Emmelie Stock
- Department of Medical Imaging of Domestic Animals, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium
| | - Leen Van Brantegem
- Department of Pathology, Bacteriology and Poultry Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium
| | - Hilde de Rooster
- Small Animal Hospital, Department of Medicine and Clinical Biology of Small Animals, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium; Cancer Research Institute Ghent (CRIG), Ghent University, Belgium.
| | - Niek N Sanders
- Laboratory of Gene Therapy, Department of Nutrition, Genetics and Ethology, Faculty of Veterinary Medicine, Ghent University, Heidestraat 19, B-9820 Merelbeke, Belgium; Cancer Research Institute Ghent (CRIG), Ghent University, Belgium.
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Meng X, Guo A, Gong W, Jia W, Luo X, Zhai J, Dou Y, Cai X. Molecular characterization, tissue distribution and expression analysis of interleukin-12 receptor β2 chain in sheep. Gene 2012; 499:124-9. [PMID: 22265841 DOI: 10.1016/j.gene.2011.12.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2011] [Revised: 11/14/2011] [Accepted: 12/06/2011] [Indexed: 10/14/2022]
Abstract
Ovine β2 subunit of the interleukin (IL)-12 receptor (IL-12Rβ2) was cloned from mRNA preparation of mitogen-activated peripheral blood mononuclear cells (PBMCs). The complete coding sequence for ovine IL-12 Rβ2 was found to be 2586 nucleotides in length encoding 862-amino-acid residue protein. It showed 96.4% homology at the nucleotide level and 94.1% homology at the amino acid level with bovine IL-12 Rβ2. The ovine IL-12 Rβ2 subunit shares common structural and functional elements with their counterparts from the other species. Phylogenetic tree showed that ovine IL-12Rβ2 was clustered into the Artiodactyla group, together with those of cattle and pig, which was distinct from the other groups. Real-time RT-PCR was used to investigate expression of the IL-12Rβ2 in different tissues of sheep in order to determine the characterization of this receptor in tissue. Expression analysis showed that IL-12Rβ2 mRNA expression was detected at all the detected tissues with the exception of thymus.
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Affiliation(s)
- Xuelian Meng
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Xujiaping 1, Yanchangpu, Chengguan District, Lanzhou 730046, China
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