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Biswas R, Swetha RG, Basu S, Roy A, Ramaiah S, Anbarasu A. Designing multi-epitope vaccine against human cytomegalovirus integrating pan-genome and reverse vaccinology pipelines. Biologicals 2024; 87:101782. [PMID: 39003966 DOI: 10.1016/j.biologicals.2024.101782] [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: 12/06/2023] [Revised: 05/13/2024] [Accepted: 07/08/2024] [Indexed: 07/16/2024] Open
Abstract
Human cytomegalovirus (HCMV) is accountable for high morbidity in neonates and immunosuppressed individuals. Due to the high genetic variability of HCMV, current prophylactic measures are insufficient. In this study, we employed a pan-genome and reverse vaccinology approach to screen the target for efficient vaccine candidates. Four proteins, envelope glycoprotein M, UL41A, US23, and US28, were shortlisted based on cellular localization, high solubility, antigenicity, and immunogenicity. A total of 29 B-cell and 44 T-cell highly immunogenic and antigenic epitopes with high global population coverage were finalized using immunoinformatics tools and algorithms. Further, the epitopes that were overlapping among the finalized B-cell and T-cell epitopes were linked with suitable linkers to form various combinations of multi-epitopic vaccine constructs. Among 16 vaccine constructs, Vc12 was selected based on physicochemical and structural properties. The docking and molecular simulations of VC12 were performed, which showed its high binding affinity (-23.35 kcal/mol) towards TLR4 due to intermolecular hydrogen bonds, salt bridges, and hydrophobic interactions, and there were only minimal fluctuations. Furthermore, Vc12 eliciting a good response was checked for its expression in Escherichia coli through in silico cloning and codon optimization, suggesting it to be a potent vaccine candidate.
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Affiliation(s)
- Rhitam Biswas
- Medical and Biological Computing Laboratory, School of Biosciences and Technology (SBST), Vellore Institute of Technology (VIT), Vellore, 632014, Tamil Nadu, India; Department of Biotechnology, SBST, VIT, Vellore, 632014, Tamil Nadu, India
| | - Rayapadi G Swetha
- Medical and Biological Computing Laboratory, School of Biosciences and Technology (SBST), Vellore Institute of Technology (VIT), Vellore, 632014, Tamil Nadu, India; Department of Biosciences, SBST, VIT, Vellore, 632014, Tamil Nadu, India
| | - Soumya Basu
- Department of Biotechnology, NIST University, Berhampur, 761008, Odisha, India
| | - Aditi Roy
- Medical and Biological Computing Laboratory, School of Biosciences and Technology (SBST), Vellore Institute of Technology (VIT), Vellore, 632014, Tamil Nadu, India; Department of Biotechnology, SBST, VIT, Vellore, 632014, Tamil Nadu, India
| | - Sudha Ramaiah
- Medical and Biological Computing Laboratory, School of Biosciences and Technology (SBST), Vellore Institute of Technology (VIT), Vellore, 632014, Tamil Nadu, India; Department of Biosciences, SBST, VIT, Vellore, 632014, Tamil Nadu, India
| | - Anand Anbarasu
- Medical and Biological Computing Laboratory, School of Biosciences and Technology (SBST), Vellore Institute of Technology (VIT), Vellore, 632014, Tamil Nadu, India; Department of Biotechnology, SBST, VIT, Vellore, 632014, Tamil Nadu, India.
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2
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Waghmare S, Guptasarma P. 'Nunchuck' proteins: Short flexible linkers resist proteolysis by facilitating motions in flanking domains to inhibit the approach of proteases. Biochem Biophys Res Commun 2024; 706:149730. [PMID: 38461648 DOI: 10.1016/j.bbrc.2024.149730] [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: 09/06/2023] [Revised: 02/18/2024] [Accepted: 02/26/2024] [Indexed: 03/12/2024]
Abstract
Peptides linking well-folded and non-interacting domains in fusion proteins can undergo proteolytic degradation. This leads to physical separation of the domains that were originally sought to be joined. In order to identify characteristics that determine linker degradation propensity, we selected a pair of thermostable, proteolytically-resistant domains, and joined them using five different linkers. We then assessed linker degradation propensities through size-exclusion chromatography, and denaturing and non-denaturing electrophoresis. The domains used were Coh2, an all-beta cohesin from C. thermocellum CipA, and BSX, a beta/alpha barrel xylanase from Bacillus sp. NG-27, while the linkers used were Rigid (3 repeats of N-EAAAK-C), Flexible (two repeats of N-SGGGG-C), Nat-full (42 residues of a Coh2-adjacent linker from CipA), Nat-half (a 21 residues-long derivative of Nat-full) and Nat-quarter (a 9 residues-long derivative of Nat-full). Both with proteolysis effected by proteases present in the environment, and with an exogenously-added protease (Subtilisin A), we found that Flexible underwent little or no degradation, whereas linkers of comparable length like Nat-quarter or Rigid underwent extensive degradation, as did longer linkers like Nat-Half and Nat-Full. Our analyses disfavor the likelihood of the sequence of Flexible being naturally resistant to proteolysis, and instead favor the explanation that the flexibility of Flexible facilitates movements of Coh2 relative to BSX which then serve to sterically prevent the approach of proteases. Thus, the construct incorporating Flexible appears to behave like a 'nunchuck' in which rods/spheres flanking a chain collide with approaching swords that are capable of severing the chain, to prevent severance.
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Affiliation(s)
- Snehal Waghmare
- Centre for Protein Science, Design and Engineering (CPSDE) and Hyperthermophile Enzyme Hydrolase Research Centre (HEHRC), Department of Biological Sciences, Indian Institute of Science Education and Research (IISER), Mohali, Knowledge City, Sector-81, SAS Nagar, Punjab, 140306, India
| | - Purnananda Guptasarma
- Centre for Protein Science, Design and Engineering (CPSDE) and Hyperthermophile Enzyme Hydrolase Research Centre (HEHRC), Department of Biological Sciences, Indian Institute of Science Education and Research (IISER), Mohali, Knowledge City, Sector-81, SAS Nagar, Punjab, 140306, India.
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3
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Liu Y, Li Y, Wei X, Ullah I, Uddin S, Wang J, Xia R, Wang M, Yang H, Li H. A comparative study on the effects of human serum albumin and α-melanocyte-stimulating hormone fusion proteins on the anti-neuroinflammatory in the central nervous system of adult mice. Neuropeptides 2024; 104:102410. [PMID: 38308948 DOI: 10.1016/j.npep.2024.102410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 01/19/2024] [Accepted: 01/22/2024] [Indexed: 02/05/2024]
Abstract
The immunomodulatory effects of α-melanocyte stimulating hormone (α-MSH) in the central nervous system (CNS) have been investigated for forty years. The clinical applications of α-MSH are limited due to its short half-life. Our previous study has indicated that the short half-life of α-MSH can be extended by fusion with carrier human serum albumin (HSA) and this fusion protein has also retained the anti-inflammatory effect on the CNS. This improvement is still far from the clinical requirements. Thus, we expected to enhance the half-life and activity of the fusion protein by optimizing the linker peptide to get closer to clinical requirements. In a previous study, we screened out two candidates in vitro experiments with a flexible linker peptide (fusion protein with flexible linker peptide, FPFL) and a rigid linker peptide (fusion protein with rigid linker peptide, FPRL), respectively. However, it was not sure whether the anti-inflammatory effects in vitro could be reproduced in vivo. Our results show that FPRL is the best candidate with a longer half-life compared to the traditional flexible linker peptides. Meanwhile, the ability of FPRL to penetrate the blood-brain barrier (BBB) was enhanced, and the inhibition of TNF-α and IL-6 was improved. We also found that the toxicity of FPRL was decreased. All of the results suggested that trying to choose the rigid linker peptide in some fusion proteins may be a potential choice for improving the unsatisfactory characteristics.
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Affiliation(s)
- Yiyao Liu
- Biopharmaceutical International Science and Technology Cooperation Base, School of Life Sciences, Lanzhou University, Tianshui Road No. 222, Lanzhou 730000, Gansu Province, People's Republic of China
| | - Yang Li
- Gansu High Throughput Screening and Creation Center for Health Products, School of Pharmacy, Lanzhou University, Tianshui Road No. 222, Lanzhou 730000, Gansu Province, People's Republic of China
| | - Xueyan Wei
- Biopharmaceutical International Science and Technology Cooperation Base, School of Life Sciences, Lanzhou University, Tianshui Road No. 222, Lanzhou 730000, Gansu Province, People's Republic of China
| | - Inam Ullah
- Biopharmaceutical International Science and Technology Cooperation Base, School of Life Sciences, Lanzhou University, Tianshui Road No. 222, Lanzhou 730000, Gansu Province, People's Republic of China
| | - Shahab Uddin
- Biopharmaceutical International Science and Technology Cooperation Base, School of Life Sciences, Lanzhou University, Tianshui Road No. 222, Lanzhou 730000, Gansu Province, People's Republic of China
| | - Jiatao Wang
- Gansu High Throughput Screening and Creation Center for Health Products, School of Pharmacy, Lanzhou University, Tianshui Road No. 222, Lanzhou 730000, Gansu Province, People's Republic of China
| | - Runjie Xia
- Biopharmaceutical International Science and Technology Cooperation Base, School of Life Sciences, Lanzhou University, Tianshui Road No. 222, Lanzhou 730000, Gansu Province, People's Republic of China
| | - Meizhu Wang
- Gansu High Throughput Screening and Creation Center for Health Products, School of Pharmacy, Lanzhou University, Tianshui Road No. 222, Lanzhou 730000, Gansu Province, People's Republic of China
| | - Hui Yang
- Institute of Biology, Gansu Academy of Sciences, Dingxi Road No. 229, Lanzhou 730000, Gansu Province, People's Republic of China
| | - Hongyu Li
- Biopharmaceutical International Science and Technology Cooperation Base, School of Life Sciences, Lanzhou University, Tianshui Road No. 222, Lanzhou 730000, Gansu Province, People's Republic of China; Gansu High Throughput Screening and Creation Center for Health Products, School of Pharmacy, Lanzhou University, Tianshui Road No. 222, Lanzhou 730000, Gansu Province, People's Republic of China.
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4
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Ma S, Ma B, Yang Y, Mu Y, Wei P, Yu X, Zhao B, Zou Z, Liu Z, Wang M, Deng J. Functionalized 3D Hydroxyapatite Scaffold by Fusion Peptides-Mediated Small Extracellular Vesicles of Stem Cells for Bone Tissue Regeneration. ACS APPLIED MATERIALS & INTERFACES 2024; 16:3064-3081. [PMID: 38215277 DOI: 10.1021/acsami.3c13273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2024]
Abstract
3D printing technology offers extensive applications in tissue engineering and regenerative medicine (TERM) because it can create a three-dimensional porous structure with acceptable porosity and fine mechanical qualities that can mimic natural bone. Hydroxyapatite (HA) is commonly used as a bone repair material due to its excellent biocompatibility and osteoconductivity. Small extracellular vesicles (sEVs) derived from bone marrow mesenchymal stem cells (BMSCs) can regulate bone metabolism and stimulate the osteogenic differentiation of stem cells. This study has designed a functionalized bone regeneration scaffold (3D H-P-sEVs) by combining the biological activity of BMSCs-sEVs and the 3D-HA scaffold to improve bone regeneration. The scaffold utilizes the targeting of fusion peptides to increase the loading efficiency of sEVs. The composition, structure, mechanical properties, and in vitro degradation performance of the 3D H-P-sEVs scaffolds were examined. The composite scaffold demonstrated good biocompatibility, substantially increased the expression of osteogenic-related genes and proteins, and had a satisfactory bone integration effect in the critical skull defect model of rats. In conclusion, the combination of EVs and 3D-HA scaffold via fusion peptide provides an innovative composite scaffold for bone regeneration and repair, improving osteogenic performance.
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Affiliation(s)
- Shiqing Ma
- Department of Stomatology, The Second Hospital of Tianjin Medical University, 23 Pingjiang Road, Hexi District, Tianjin 300211, China
| | - Beibei Ma
- School and Hospital of Stomatology, Tianjin Medical University, 12 Observatory Road, Tianjin 300070, China
| | - Yilin Yang
- School and Hospital of Stomatology, Tianjin Medical University, 12 Observatory Road, Tianjin 300070, China
| | - Yuzhu Mu
- School and Hospital of Stomatology, Tianjin Medical University, 12 Observatory Road, Tianjin 300070, China
| | - Pengfei Wei
- Beijing Biosis Healing Biological Technology Co., Ltd., No. 6 Plant West, Valley No. 1 Bio-medicine Industry Park, Beijing 102600, China
| | - Xueqiao Yu
- Beijing Biosis Healing Biological Technology Co., Ltd., No. 6 Plant West, Valley No. 1 Bio-medicine Industry Park, Beijing 102600, China
| | - Bo Zhao
- Beijing Biosis Healing Biological Technology Co., Ltd., No. 6 Plant West, Valley No. 1 Bio-medicine Industry Park, Beijing 102600, China
| | - Zhenyu Zou
- Department of Hernia and Abdominal Wall Surgery, Beijing Chaoyang Hospital, Capital Medical University, 5 Jingyuan Road, Shijingshan District, Beijing 100043, China
| | - Zihao Liu
- Tianjin Zhongnuo Dental Hospital, Dingfu Building at the intersection of Nanma Road and Nankai Sanma Road in Nankai District, Tianjin 300100, China
| | - Minggang Wang
- Department of Hernia and Abdominal Wall Surgery, Beijing Chaoyang Hospital, Capital Medical University, 5 Jingyuan Road, Shijingshan District, Beijing 100043, China
| | - Jiayin Deng
- School and Hospital of Stomatology, Tianjin Medical University, 12 Observatory Road, Tianjin 300070, China
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Milani B, dos Santos TW, Guerra MES, Oliveira S, Goulart C, André GO, Leite LCC, Converso TR, Darrieux M. Fusion of PspA to detoxified pneumolysin enhances pneumococcal vaccine coverage. PLoS One 2023; 18:e0291203. [PMID: 38096222 PMCID: PMC10721071 DOI: 10.1371/journal.pone.0291203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Accepted: 08/23/2023] [Indexed: 12/17/2023] Open
Abstract
Despite the implementation of conjugate vaccines in several countries, S. pneumoniae continues to pose a great burden worldwide, causing around 1 million annual deaths. Pneumococcal proteins have long been investigated as serotype-independent vaccines against this pathogen, with promising results. However, it is a consensus that one antigen alone will not be sufficient to provide long-term protection with wide coverage. Amongst the most well studied pneumococcal proteins are PspA and pneumolysin (Ply), two major virulence factors required by the bacterium for successful invasion of host tissues. PspA is highly immunogenic and protective, but it is structurally variable; pneumolysin is conserved among different pneumococci, but it is toxic to the host. To overcome these limitations, N-terminal PspA fragments have been genetically fused to non-toxic pneumolysin derivatives (PlD) to create PspA_PlD chimeras. Mouse immunization with these fusions confers protection against pneumococcal strains expressing heterologous PspAs, which correlates with antibody-induced complement C3 deposition on the surface of multiple pneumococcal strains. Analysis of mutant strains lacking PspA or Pneumolysin shows that both proteins contribute to the antibody-mediated enhancement in complement deposition induced by the fusion. These results expand previous data evaluating PspA_PlD and demonstrate that the fusion combines the protective traits of both proteins, inducing antibodies that efficiently promote complement deposition on multiple strains and cross-protection.
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Affiliation(s)
- Barbara Milani
- Laboratório de Microbiologia Molecular e Clínica, Universidade São Francisco, Bragança Paulista, Brazil
| | - Tanila Wood dos Santos
- Laboratório de Microbiologia Molecular e Clínica, Universidade São Francisco, Bragança Paulista, Brazil
- Programa de Pós-Graduação Interunidades em Biotecnologia-USP-IPT-IB, São Paulo, Brazil
| | | | - Sheila Oliveira
- Laboratório de Microbiologia Molecular e Clínica, Universidade São Francisco, Bragança Paulista, Brazil
| | - Cibelly Goulart
- Centro de Biotecnologia, Instituto Butantan, São Paulo, Brazil
| | - Greiciely O. André
- Laboratório de Microbiologia Molecular e Clínica, Universidade São Francisco, Bragança Paulista, Brazil
| | | | - Thiago R Converso
- Laboratório de Microbiologia Molecular e Clínica, Universidade São Francisco, Bragança Paulista, Brazil
| | - Michelle Darrieux
- Laboratório de Microbiologia Molecular e Clínica, Universidade São Francisco, Bragança Paulista, Brazil
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Chandpa HH, Panda AK, Meena CL, Meena J. Beyond the polysaccharide and glycoconjugate vaccines for Streptococcus pneumoniae: Does protein/peptide nanovaccines hold promises? Vaccine 2023; 41:7515-7524. [PMID: 37980259 DOI: 10.1016/j.vaccine.2023.11.020] [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: 08/31/2023] [Revised: 09/28/2023] [Accepted: 11/08/2023] [Indexed: 11/20/2023]
Abstract
Streptococcus pneumoniae having almost 98 serotypes and being common cause of acute otitis media, pneumonia, bacteremia, meningitis etc., which results in high mortality and morbidity globally. Although vaccines like PCV-13 and PPV-23 are available, some problems like serotype replacement and poor immunogenicity in children, old age and immunocompromised people has been observed. To overcome these drawbacks protein/peptide-based vaccine can be a good strategy as these provides wide serotype coverage. However, immunogenicity of protein subunit vaccines is lower, that issue can be solved by using adjuvants. Recently nanoparticles as an adjuvant for vaccine delivery being used, which has provided not only good immunogenicity but also improved delivery and efficiency of protein-based vaccines. In this review we have discussed the latest advancement of nanoparticles-based protein/peptide vaccine delivery for Streptococcus pneumoniae.
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Affiliation(s)
- Hitesh Harsukhbhai Chandpa
- ImmunoEngineering and Therapeutics Laboratory, Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India
| | - Amulya Kumar Panda
- Panacea Biotec Limited, Mohan Cooperative Industrial Estate, Badarpur, New Delhi 110044, India
| | - Chhuttan Lal Meena
- Drug Design Laboratory, National Institute of Immunology, New Delhi 110067, India
| | - Jairam Meena
- ImmunoEngineering and Therapeutics Laboratory, Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India.
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Li S, Liang H, Zhao SH, Yang XY, Guo Z. Recent progress in pneumococcal protein vaccines. Front Immunol 2023; 14:1278346. [PMID: 37818378 PMCID: PMC10560988 DOI: 10.3389/fimmu.2023.1278346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 09/07/2023] [Indexed: 10/12/2023] Open
Abstract
Pneumococcal infections continue to pose a significant global health concern, necessitating the development of effective vaccines. Despite the progress shown by pneumococcal polysaccharide and conjugate vaccines, their limited coverage and the emergence of non-vaccine serotypes have highlighted the need for alternative approaches. Protein-based pneumococcal vaccines, targeting conserved surface proteins of Streptococcus pneumoniae, have emerged as a promising strategy. In this review, we provide an overview of the advancements made in the development of pneumococcal protein vaccines. We discuss the key protein vaccine candidates, highlight their vaccination results in animal studies, and explore the challenges and future directions in protein-based pneumococcal vaccine.
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Affiliation(s)
- Sha Li
- Zhuhai Key Laboratory of Basic and Applied Research in Chinese Medicine, School of Bioengineering, Zunyi Medical University, Zhuhai, Guangdong, China
| | - Hangeri Liang
- Zhuhai Key Laboratory of Basic and Applied Research in Chinese Medicine, School of Bioengineering, Zunyi Medical University, Zhuhai, Guangdong, China
| | - Shui-Hao Zhao
- Center for Biological Science and Technology, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai, Guangdong, China
| | - Xiao-Yan Yang
- Zhuhai Key Laboratory of Basic and Applied Research in Chinese Medicine, School of Bioengineering, Zunyi Medical University, Zhuhai, Guangdong, China
| | - Zhong Guo
- Center for Biological Science and Technology, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai, Guangdong, China
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Ji X, Peng Z, Song J, Zhang G, Zhang J. Fusion of Substrate-Binding Domains Enhances the Catalytic Capacity of Keratinases and Promotes Enzymatic Conversion of Feather Waste. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:11579-11586. [PMID: 37462367 DOI: 10.1021/acs.jafc.3c03064] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/03/2023]
Abstract
The unique role of keratinases in keratin hydrolysis has garnered huge interest in the recovery of feather waste. However, owing to the high hydrophobicity of feather keratins, the catalytic capacity of keratinases for hydrolyzing feathers is typically low. In this study, we aimed to improve the keratinase feather hydrolysis efficiency by fusing a substrate-binding domain into the enzyme. We screened several carbohydrate-binding modules (CBMs) and linking peptides. We selected the most promising candidates to construct, clone, and express a fusion keratinase enzyme KerZ1/CBM-L8 with a feather hydrolysis efficiency of 7.8 × 10-8 g/U. Compared with those of KerZ1, KerZ1/CBM-L8 has a feather hydrolysis efficiency that is 2.71 times higher, a kcat value that is 179% higher, which translates to higher catalytic efficiency, and Km and binding constant (K) values that are lower, which indicate a higher KerZ1/CBM-L8-keratin binding affinity. Moreover, the number of binding sites to the substrate (N), determined using isothermal titration calorimetry, was 24.1 times higher than that of KerZ1. Thus, the fusion of the substrate-binding domain improved the binding ability of the keratinase enzyme to the hydrophobic substrate, which improved its feather hydrolysis efficiency. Therefore, using the fusion keratinase would significantly improve the recovery of feather waste.
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Affiliation(s)
- Xiaomei Ji
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
- Science Center for Future Foods, Jiangnan University, Wuxi 214122, China
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Zheng Peng
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
- Science Center for Future Foods, Jiangnan University, Wuxi 214122, China
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Jie Song
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
- Science Center for Future Foods, Jiangnan University, Wuxi 214122, China
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Guoqiang Zhang
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
- Science Center for Future Foods, Jiangnan University, Wuxi 214122, China
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Juan Zhang
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
- Science Center for Future Foods, Jiangnan University, Wuxi 214122, China
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology, Jiangnan University, Wuxi 214122, China
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Zheng J, Yang J, Zhang Z, Liang X, Liu S, Pan Y, Wei J, Huang Y, Huang X, Qin Q. An improved oral vaccine with molecular adjuvant β-defensin protects grouper against nervous necrosis virus infection. FISH & SHELLFISH IMMUNOLOGY 2023; 136:108709. [PMID: 36972841 DOI: 10.1016/j.fsi.2023.108709] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Revised: 03/16/2023] [Accepted: 03/24/2023] [Indexed: 06/18/2023]
Abstract
Nervous necrosis virus (NNV) is one of the most important fish viral pathogens infecting more than 120 fish species worldwide. Due to the mass mortality rates often seen among larvae and juveniles, few effective vaccines against NNV were developed up to now. Here, the protective effect of recombinant coat protein (CP) from red-spotted grouper nervous necrosis virus (RGNNV) fused with grouper β-defensin (DEFB) as an oral vaccine was evaluated using Artemia as a biocarrier delivery system in pearl gentian grouper (Epinephelus lanceolatus♂ × Epinephelus fuscoguttatus♀). Feeding with Artemia encapsulated with E. coli expressing control vector (control group), CP, or CP-DEFB showed no obvious side effects on the growth of groupers. ELISA and antibody neutralization assay showed that CP-DEFB oral vaccination group induced higher anti-RGNNV CP specific antibodies and exhibited higher neutralization potency than the CP and control group. Meanwhile, the expression levels of several immune and inflammatory factors in the spleen and kidney after feeding with CP-DEFB were also significantly increased compared with the CP group. Consistently, after challenge with RGNNV, groupers fed CP-DEFB and CP exhibited 100% and 88.23% relative percentage survival (RPS), respectively. Moreover, the lower transcription levels of viral genes and milder pathological changes in CP-DEFB group were detected compared with the CP and control group. Thus, we proposed that grouper β-defensin functioned as an efficient molecular adjuvant for an improved oral vaccine against nervous necrosis virus infection.
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Affiliation(s)
- Jiaying Zheng
- College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China; University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, Guangzhou, China
| | - Jiahui Yang
- College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China; University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, Guangzhou, China
| | - Zemiao Zhang
- College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China; University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, Guangzhou, China
| | - Xia Liang
- College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China; University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, Guangzhou, China
| | - Shijia Liu
- College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China; University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, Guangzhou, China
| | - Ying Pan
- College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China; University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, Guangzhou, China
| | - Jingguang Wei
- College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China; University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, Guangzhou, China
| | - Youhua Huang
- College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China; University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, Guangzhou, China
| | - Xiaohong Huang
- College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China; University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, Guangzhou, China.
| | - Qiwei Qin
- College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China; University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, Guangzhou, China; Fishery Institute of South China Agricultural University, Nansha, Guangzhou, China.
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