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Yu HY, Gao DM, Zhou W, Xia BB, He ZY, Wu B, Jiang MZ, Wang ML, Zhao J. Expression, Purification, and Bioactivity of a Soluble Recombinant Ovine Interferon-tau in Escherichia Coli. J Vet Res 2021; 65:101-108. [PMID: 33817402 PMCID: PMC8009580 DOI: 10.2478/jvetres-2021-0011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 01/27/2021] [Indexed: 11/20/2022] Open
Abstract
INTRODUCTION Ovine interferon-tau (oIFN-τ) is a newly discovered type I interferon. This study used biochemical techniques to transform the oIFN-τ gene into Escherichia coli to obtain the mass and soluble expression of the recombinant protein. MATERIAL AND METHODS First, total RNA was extracted from fresh sheep embryonic tissues with TRIzol reagent and then used as a template to reverse transcribe and amplify the mature oIFN-τ gene with RT-PCR. The amplified product was next digested with the HindIII and XhoI restriction enzymes and inserted into the pET-32a(+) vector to construct the prokaryotic expression plasmid. The corrected in-frame recombinant plasmid, pET-32a(+)-oIFN-τ, was transformed into E. coli Rosetta (DE3) competent cells. After induction with isopropyl-beta-D-thiogalactopyranoside (IPTG), the recombinant protein was detected in bacteria. Finally, the bacteria were lysed by sonication, and the recombinant protein was purified by nickel affinity chromatography and DEAE anion exchange chromatography. RESULTS The protein was confirmed to be oIFN-τ, which mainly existed in the soluble lysate fraction, as proven by SDS-PAGE and Western blot assays. CONCLUSION Purified IFN-τ exists mostly in a soluble form, and its anti-vesicular stomatitis virus (VSV) activity reached 7.08×10(6)IU/mL.
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Affiliation(s)
- Hai-Yang Yu
- Department of Microbiology, Anhui Medical University, Hefei, Anhui Province, 230032, P.R. China
| | - Dong-Mei Gao
- Department of Clinical Laboratory, Third Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, 230032, P.R. China
| | - Wei Zhou
- Wuhu Interferon Bio-products Industry Research Institute Co., Ltd., Wuhu, Anhui Province, 241007, P.R. China
| | - Bing-Bing Xia
- Wuhu Interferon Bio-products Industry Research Institute Co., Ltd., Wuhu, Anhui Province, 241007, P.R. China
| | - Zhi-Yuan He
- Wuhu Interferon Bio-products Industry Research Institute Co., Ltd., Wuhu, Anhui Province, 241007, P.R. China
| | - Bo Wu
- Wuhu Interferon Bio-products Industry Research Institute Co., Ltd., Wuhu, Anhui Province, 241007, P.R. China
| | - Min-Zhi Jiang
- Wuhu Interferon Bio-products Industry Research Institute Co., Ltd., Wuhu, Anhui Province, 241007, P.R. China
| | - Ming-Li Wang
- Department of Microbiology, Anhui Medical University, Hefei, Anhui Province, 230032, P.R. China
- Wuhu Interferon Bio-products Industry Research Institute Co., Ltd., Wuhu, Anhui Province, 241007, P.R. China
| | - Jun Zhao
- Department of Microbiology, Anhui Medical University, Hefei, Anhui Province, 230032, P.R. China
- Wuhu Interferon Bio-products Industry Research Institute Co., Ltd., Wuhu, Anhui Province, 241007, P.R. China
- Wuhu Overseas Students Pioneer Park, Wuhu, Anhui Province, 241007, P.R. China
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Zhao J, Yu HY, Zhao Y, Li SQ, Fu XL, Zhou W, Xia BB, Wang ML, Chen J. Pharmacokinetics of the recombinant ovine interferon-tau in lambs. Pol J Vet Sci 2019; 22:75-82. [PMID: 30997764 DOI: 10.24425/pjvs.2018.125610] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
In the current study, twenty lambs, aged 4 months, half male and half female, were classified into four groups, with five in each group. The experimental three groups of lambs were given intravenous (IV), intramuscular (IM) and subcutaneous (SC) administrations of recombinant ovine interferon-τ (roIFN-τ). The fourth group (normal control) of lambs was given normal saline injections in the same way. After administrations, blood samples were collected from the tested animals at different time points post injection, and the serum titers of roIFN-τ were measured using cytopathic effect (CPE) inhibition bioassay. The results of calculating pharmacokinetic (PK) parameters using DAS software showed that the PK characteristics of roIFN-τ through IV injection conformed to the two-compartment open model, whose half-life of distribution phases (T1/2α) was 0.33±0.034 h and the elimination half-life(T1/2β) was 5.01±0.24 h. However, the PK features of IM injection and SC injection of roIFN-τ conformed to the one compartment open model, whose Tmax were 3.11±0.26 h and 4.83±0.43 h, respectively, together with an elimination half life(T1/2β) of 9.11±0.76 h and 7. 43±0.58 h, and an absorption half-life (T1/2k(a)) of 1.13±0.31 h and 1.85±0.40 h, respectively. The bioavailability of roIFN-τ after IM administration reaches 73.57%, which is greater than that of SC administration (53.43%). These results indicate that the drug administration effect can be preferably obtained following a single dose IM administration of the roIFN-τ aqueous preparation. This study will facilitate the clinical application of roIFN-τ as a potential antiviral agent in future work.
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Affiliation(s)
- J Zhao
- Department of Microbiology, Anhui Medical University, Hefei, Anhui Province, 230032, China.,Anhui JiuChuan Biotech Co., Ltd., Wuhu, Anhui Province, 241007, China.,Wuhu Overseas Students Pioneer Park, Wuhu, Anhui Province, 241000, China.,Wuhu Interferon Bio-products Industry Research Institute Co., Ltd., Wuhu, Anhui Province, 241000, China
| | - H Y Yu
- Department of Microbiology, Anhui Medical University, Hefei, Anhui Province, 230032, China
| | - Y Zhao
- Anhui JiuChuan Biotech Co., Ltd., Wuhu, Anhui Province, 241007, China
| | - S Q Li
- Anhui JiuChuan Biotech Co., Ltd., Wuhu, Anhui Province, 241007, China
| | - X L Fu
- Anhui JiuChuan Biotech Co., Ltd., Wuhu, Anhui Province, 241007, China
| | - W Zhou
- Anhui JiuChuan Biotech Co., Ltd., Wuhu, Anhui Province, 241007, China
| | - B B Xia
- Anhui JiuChuan Biotech Co., Ltd., Wuhu, Anhui Province, 241007, China
| | - M L Wang
- Department of Microbiology, Anhui Medical University, Hefei, Anhui Province, 230032, China.,Anhui JiuChuan Biotech Co., Ltd., Wuhu, Anhui Province, 241007, China.,Wuhu Overseas Students Pioneer Park, Wuhu, Anhui Province, 241000, China.,Wuhu Interferon Bio-products Industry Research Institute Co., Ltd., Wuhu, Anhui Province, 241000, China
| | - J Chen
- Department of Microbiology, Anhui Medical University, Hefei, Anhui Province, 230032, China.,Department of Pathology and Cell Biology, Columbia University, New York 10032, USA
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