1
|
Sun F, Wang W, Li Z, Li Y, Guo W, Kong Y. Design, expression and biological evaluation of DX-88mut as a novel selective factor XIa inhibitor for antithrombosis. Bioorg Chem 2024; 142:106951. [PMID: 37924755 DOI: 10.1016/j.bioorg.2023.106951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 10/21/2023] [Accepted: 10/28/2023] [Indexed: 11/06/2023]
Abstract
Thrombotic diseases, such as myocardial infarction, stroke, and deep vein thrombosis, severely threaten human health, and anticoagulation is an effective way to prevent such illnesses. However, most anticoagulant drugs in the clinic have different bleeding risks. Previous studies have shown that coagulation factor XI is an ideal target for safe anticoagulant drug development. Here, we designed the FXIa inhibitory peptide DX-88mut by replacing Loop1 (DGPCRAAHPR) and Loop2 (IYGGC) in DX-88, which is a clinical drug targeting PKa for the treatment of hereditary angioedema, using Loop1 (TGPCRAMISR) and Loop2 (FYGGC) in the FXIa inhibitory peptide PN2KPI, respectively. DX-88mut selectively inhibited FXIa against a panel of serine proteases with an IC50 value of 14.840 ± 0.453 nM, dose-dependently prolonged APTT in mouse, rat and human plasma, and potently inhibited FeCl3-induced carotid artery thrombosis in mice at a dose of 1 µmol/kg. Additionally, DX-88mut did not show a significant bleeding risk at a dose of 5 µmol/kg. Taken together, these results show that DX-88mut is a potential candidate for the development of a novel antithrombotic agent.
Collapse
Affiliation(s)
- Feilong Sun
- School of Life Science and Technology, China Pharmaceutical University, Longmian Street 639, Nanjing 211198, China
| | - Weihao Wang
- School of Life Science and Technology, China Pharmaceutical University, Longmian Street 639, Nanjing 211198, China
| | - Zhengyang Li
- School of Life Science and Technology, China Pharmaceutical University, Longmian Street 639, Nanjing 211198, China
| | - Yitong Li
- School of Life Science and Technology, China Pharmaceutical University, Longmian Street 639, Nanjing 211198, China
| | - Wei Guo
- School of Life Science and Technology, China Pharmaceutical University, Longmian Street 639, Nanjing 211198, China.
| | - Yi Kong
- School of Life Science and Technology, China Pharmaceutical University, Longmian Street 639, Nanjing 211198, China.
| |
Collapse
|
2
|
Shen C, Zhang M, Liang H, He J, Zhang B, Liang B. Gene cloning and functional study of PmKSPI from Pinctada fucata martensii. FISH & SHELLFISH IMMUNOLOGY 2022; 131:1157-1165. [PMID: 36400373 DOI: 10.1016/j.fsi.2022.11.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 09/28/2022] [Accepted: 11/11/2022] [Indexed: 06/16/2023]
Abstract
Kunitz-type serine protease inhibitors (KSPI) are a family of serine protease inhibitors (SPIs) and are extensively found in animals, plants, and microbes. SPI can inhibit proteases that may be harmful or unwanted to its cells. Here, a four-domain Kunitz-type SPI, PmKSPI, was cloned by RACE in the pearl oyster Pinctada fucata martensii. The full-length cDNA sequence of PmKSPI was 1318 bp, including the 5' UTR (25 bp), the 3' UTR (96 bp) and ORF (1197 bp). Homology analysis indicated that PmKSPI had the highest resemblance (30.14%) with its homolog in Crassostrea gigas. Phylogenetic analysis revealed that PmKSPI clustered with homologs in other molluscs. We found that PmKSPI mRNA expression in P. f. martensii was distributed in all six tissues, with the highest level in the mantle, and almost no expression in other tissues. After PAMPs challenge, expression of PmKSPI mRNA in the mantle was significantly up-regulated. The recombinant protein rPmKSPI significantly inhibited the growth of 5 kinds of Gram-negative bacteria but had little effect on Gram-positive bacterial activity. Transmission electron microscopy showed that plasmolysis occurred in two Gram-negative bacteria species when treated with rPmKSPI. rPmKSPI may thus have a bactericidal effect by destroying the bacterial cell membrane or cell walls and releasing its contents. Therefore, our results suggest that PmKSPI is tightly associated with the immunological defence of P. f. martensii.
Collapse
Affiliation(s)
- Chenghao Shen
- Fisheries College of Guangdong Ocean University, Zhanjiang, Guangdong, 524088, China
| | - Meizhen Zhang
- Fisheries College of Guangdong Ocean University, Zhanjiang, Guangdong, 524088, China
| | - Haiying Liang
- Fisheries College of Guangdong Ocean University, Zhanjiang, Guangdong, 524088, China; Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, Zhanjiang, Guangdong, 524088, China.
| | - Junjun He
- Fisheries College of Guangdong Ocean University, Zhanjiang, Guangdong, 524088, China
| | - Bin Zhang
- Fisheries College of Guangdong Ocean University, Zhanjiang, Guangdong, 524088, China
| | - Bidan Liang
- Fisheries College of Guangdong Ocean University, Zhanjiang, Guangdong, 524088, China
| |
Collapse
|
3
|
Chen H, Siu SWI, Wong CTT, Qiu J, Cheung AKK, Lee SMY. Anti-epileptic Kunitz-like peptides discovered in the branching coral Acropora digitifera through transcriptomic analysis. Arch Toxicol 2022; 96:2589-2608. [PMID: 35604417 DOI: 10.1007/s00204-022-03311-4] [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: 02/24/2022] [Accepted: 04/27/2022] [Indexed: 11/29/2022]
Abstract
Approximately 50 million people are suffering from epilepsy worldwide. Corals have been used for treating epilepsy in traditional Chinese medicine, but the mechanism of this treatment is unknown. In this study, we analyzed the transcriptome of the branching coral Acropora digitifera and obtained its Kyoto Encyclopedia of Genes and Genomes (KEGG), EuKaryotic Orthologous Groups (KOG) and Gene Ontology (GO) annotation. Combined with multiple sequence alignment and phylogenetic analysis, we discovered three polypeptides, we named them AdKuz1, AdKuz2 and AdKuz3, from A. digitifera that showed a close relationship to Kunitz-type peptides. Molecular docking and molecular dynamics simulation indicated that AdKuz1 to 3 could interact with GABAA receptor but AdKuz2-GABAA remained more stable than others. The biological experiments showed that AdKuz1 and AdKuz2 exhibited an anti-inflammatory effect by decreasing the aberrant level of nitric oxide (NO), IL-6, TNF-α and IL-1β induced by LPS in BV-2 cells. In addition, the pentylenetetrazol (PTZ)-induced epileptic effect on zebrafish was remarkably suppressed by AdKuz1 and AdKuz2. AdKuz2 particularly showed superior anti-epileptic effects compared to the other two peptides. Furthermore, AdKuz2 significantly decreased the expression of c-fos and npas4a, which were up-regulated by PTZ treatment. In addition, AdKuz2 reduced the synthesis of glutamate and enhanced the biosynthesis of gamma-aminobutyric acid (GABA). In conclusion, the results indicated that AdKuz2 may affect the synthesis of glutamate and GABA and enhance the activity of the GABAA receptor to inhibit the symptoms of epilepsy. We believe, AdKuz2 could be a promising anti-epileptic agent and its mechanism of action should be further investigated.
Collapse
Affiliation(s)
- Hanbin Chen
- State Key Laboratory of Quality Research in Chinese Medicine and Institute of Chinese Medical Sciences, University of Macau, Macao, China.,Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong, China
| | - Shirley Weng In Siu
- Institute of Science and Environment, University of Saint Joseph, Macao, China
| | - Clarence Tsun Ting Wong
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hong Kong, China
| | - Jianwen Qiu
- Department of Biology and Hong Kong Branch of the Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Hong Kong Baptist University, Hong Kong, China.,Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
| | - Alex Kwok-Kuen Cheung
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong, China.
| | - Simon Ming Yuen Lee
- State Key Laboratory of Quality Research in Chinese Medicine and Institute of Chinese Medical Sciences, University of Macau, Macao, China. .,Department of Pharmaceutical Sciences, Faculty of Health Sciences, University of Macau, Macao, China.
| |
Collapse
|
4
|
Chen HB, Luo CD, Ai GX, Wang YF, Li CL, Tan LH, Lee SMY, Cheung AKK, Su ZR, Wu XL, Xie JH, Zeng HF. A comparative investigation of the interaction and pharmacokinetics of hemoglobin with berberine and its oxymetabolite. J Pharm Biomed Anal 2021; 199:114032. [PMID: 33774454 DOI: 10.1016/j.jpba.2021.114032] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 03/17/2021] [Accepted: 03/18/2021] [Indexed: 10/21/2022]
Abstract
Berberine (BBR), isolated from Coptis chinensis, is one type of isoquinoline alkaloids. BBR exerts numerous of bioactivities but the plasma concentration is really low. In our previous study, a new oxymetabolite (OBB) has been discovered and showed superior anti-inflammatory effect comparing with BBR. The aim of this study is to investigate the interaction, metabolite and pharmacokinetics of BBR with hemoglobin. Sprague-Dawley rats were used to carry out the interaction, metabolite and pharmacokinetics of BBR and OBB in vivo. Fluorescence spectra were used to analyse the interaction in vitro. Results showed that OBB could be generated after intravenous injection or incubating with BBR in vitro and in vivo; Both BBR and OBB exerted much stronger binding interaction with hemoglobin than plasma and affect the conformation of bovine hemoglobin and change the fluorescence spectral properties; BBR and OBB were mainly presented and transported in the proteins-bound form. These results provide a new insight to understand the dynamic equilibrium of BBR and OBB within body from the perspective of new metabolic pathways.
Collapse
Affiliation(s)
- Han-Bin Chen
- The First Affiliated Hospital of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, 510405, People's Republic of China; State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, People's Republic of China; Muscle Physiology Laboratory, Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong, People's Republic of China
| | - Chao-Dan Luo
- Guangxi Institute of Subtropical Agricultural Products Processing, Guangxi Subtropical Crops Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, 530001, People's Republic of China; School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, People's Republic of China
| | - Gao-Xiang Ai
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, People's Republic of China
| | - Yong-Fu Wang
- First School of Clinical Medicine, Guangzhou University of Chinese Medicine, Guangzhou, 510120, People's Republic of China
| | - Cai-Lan Li
- Department of Pharmacology, Zunyi Medical University, Zhuhai Campus, Zhuhai, 519041, People's Republic of China
| | - Li-Hua Tan
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, People's Republic of China
| | - Simon Ming-Yuen Lee
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, People's Republic of China
| | - Alex Kwok-Kuen Cheung
- Muscle Physiology Laboratory, Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong, People's Republic of China
| | - Zi-Ren Su
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, People's Republic of China
| | - Xiao-Li Wu
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, People's Republic of China.
| | - Jian-Hui Xie
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510120, People's Republic of China; State Key Laboratory of Dampness Syndrome of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510120, People's Republic of China; Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangzhou, 510120, People's Republic of China.
| | - Hui-Fang Zeng
- The First Affiliated Hospital of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, 510405, People's Republic of China.
| |
Collapse
|
5
|
Vizcaíno AJ, Galafat A, Sáez MI, Martínez TF, Alarcón FJ. Partial Characterization of Protease Inhibitors of Ulva ohnoi and Their Effect on Digestive Proteases of Marine Fish. Mar Drugs 2020; 18:md18060319. [PMID: 32570719 PMCID: PMC7344585 DOI: 10.3390/md18060319] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 06/12/2020] [Accepted: 06/16/2020] [Indexed: 01/14/2023] Open
Abstract
This piece of research evaluates the presence of protease inhibitors in the macroalga Ulva ohnoi and provides an initial overview of their mode of action. The ability of Ulva protease inhibitors to inhibit digestive proteases of three marine fish species, as well as their capacity to hamper the hydrolysis of a reference protein by those fish proteases, were assessed. In addition, thermal stability and the mode of inhibition on trypsin and chymotrypsin were also studied. Dose-response inhibition curves and in vitro protein hydrolysis assays revealed a noticeable inhibition of fish enzymes when Ulva concentration increased in the assay. The thermal treatment of Ulva reduced markedly the inhibitory effect on fish digestive protease. Finally, Lineweaver-Burk plots indicated that trypsin and chymotrypsin inhibition consisted of a mixed-type inhibition mechanism in which the inhibitory effect depends on Ulva concentration. Overall, the results confirmed the presence of protease inhibitors in Ulva, though heat treatment was enough for inactivating these compounds.
Collapse
|
6
|
Yu H, Si Y, Liu Y, Liu J, Xu X, Zhang Q, Wang X. Molecular characterization, expression and immune functions of cystatin B in Japanese flounder (Paralichthys olivaceus). FISH & SHELLFISH IMMUNOLOGY 2018; 81:463-469. [PMID: 30064019 DOI: 10.1016/j.fsi.2018.07.054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 07/19/2018] [Accepted: 07/27/2018] [Indexed: 06/08/2023]
Abstract
Cystatin B is an intracellular inhibitor that regulates the activities of cysteine proteases. In this study, cystatin B in Japanese flounder (Paralichthys olivaceus) was characterized and its immune function was analyzed. This gene had a high similarity with the sequence of cystatin B in other fish species, and the derived peptide shared typical features of cystatin proteins including the QXVXG motif. The results of quantitative real-time PCR showed that cystatin B mRNA was constitutively expressed in all examined tissues, with the highest level in gill. The stimulations of lipopolysaccharide, peptidoglycan and polyinosinic-polycytidylic acid effectively increased the expression level of cystatin B mRNA. Functional analysis implied that the recombinant P. olivaceus cystatin B purified from Escherichia coli had cysteine protease inhibitory activity and could inhibit bacterial growth by binding to bacteria. Furthermore, we found that P. olivaceus cystatin B had no effects on the expression of inflammatory factors cytokines tumor necrosis factor α, interleukin 10, interleukin 1β and interferon γ. These results indicate that cystatin B of P. olivaceus is potentially involved in immune responses against invading microbial pathogens, and provide a better understanding of the immune mechanisms of cystatins in teleosts.
Collapse
Affiliation(s)
- Haiyang Yu
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, 266003, Qingdao, Shandong, China
| | - Yu Si
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, 266003, Qingdao, Shandong, China
| | - Yuxiang Liu
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, 266003, Qingdao, Shandong, China
| | - Jinxiang Liu
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, 266003, Qingdao, Shandong, China
| | - Xin Xu
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, 266003, Qingdao, Shandong, China
| | - Quanqi Zhang
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, 266003, Qingdao, Shandong, China
| | - Xubo Wang
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, 266003, Qingdao, Shandong, China.
| |
Collapse
|