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Kurashiki R, Takahashi M, Okumura Y, Ono T, Endo H, Makino K, Fukui K, Yokoyama K, Ishikawa S, Yoshida KI, Ohshiro T, Suzuki H. Efficient pathway-driven scyllo-inositol production from myo-inositol using thermophilic cells and mesophilic inositol dehydrogenases: a novel strategy for pathway control. Appl Environ Microbiol 2024; 90:e0028124. [PMID: 38975762 PMCID: PMC11267878 DOI: 10.1128/aem.00281-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Accepted: 06/08/2024] [Indexed: 07/09/2024] Open
Abstract
Mesophilic enzymes, which are active at moderate temperatures, may dominate enzymatic reactions even in the presence of thermophilic crude enzymes. This study was conducted to investigate this hypothesis with mesophilic inositol dehydrogenases (IolG and IolX) produced in Geobacillus kaustophilus HTA426. To ensure the efficient production of mesophilic enzymes, we first screened for promoters induced at moderate temperatures using transcriptome analysis and identified four genes highly expressed at 30°C in the thermophile. We further characterized these promoters using fluorescent reporter assays to determine that the mti3 promoter could direct efficient gene expression at 40°C. We cloned the promoter into an Escherichia coli-Geobacillus shuttle plasmid and confirmed that the resulting vector functioned in G. kaustophilus and other thermophiles. We then used this vector for the cooperative expression of the iolG and iolX genes from Bacillus subtilis 168. G. kaustophilus cells carrying the expression vector were incubated at 60°C for cellular propagation and then at 40°C for the production of IolG and IolX. When the cells were permeabilized, IolG and IolX acted as catalysts to convert exogenous myo-inositol into scyllo-inositol at 30°C. In a scaled-up reaction, 10 g of myo-inositol was converted to 1.8 g of scyllo-inositol, which was further purified to yield 970 mg of pure powder. Notably, myo-inositol was degraded by intrinsic enzymes of G. kaustophilus at 60°C but not at 30°C, supporting our initial hypothesis. We indicate that this approach is useful for preparing enzyme cocktails without the need for purification. IMPORTANCE Enzyme cocktails are commonly employed for cell-free chemical synthesis; however, their preparation involves cumbersome processes. This study affirms that mesophilic enzymes in thermophilic crude extracts can function as specific catalysts at moderate temperatures, akin to enzyme cocktails. The catalyst was prepared by permeabilizing cells without the need for concentration, extraction, or purification processes; hence, its preparation was considerably simpler compared with conventional methods for enzyme cocktails. This approach was employed to produce pure scyllo-inositol from an economical substrate. Notably, this marks the first large-scale preparation of pure scyllo-inositol, holding potential pharmaceutical significance as scyllo-inositol serves as a promising agent for certain diseases but is currently expensive. Moreover, this approach holds promise for application in pathway engineering within living cells. The envisioned pathway is designed without chromosomal modification and is simply regulated by switching culture temperatures. Consequently, this study introduces a novel platform for both whole-cell and cell-free synthetic systems.
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Affiliation(s)
- Ryota Kurashiki
- Department of Engineering, Graduate School of Sustainability Science, Tottori University, Tottori, Japan
| | | | - Yuta Okumura
- Department of Engineering, Graduate School of Sustainability Science, Tottori University, Tottori, Japan
| | - Tatsuya Ono
- Department of Engineering, Graduate School of Sustainability Science, Tottori University, Tottori, Japan
| | - Hirofumi Endo
- Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University, Tottori, Japan
| | - Kohei Makino
- Graduate School of Science, Technology and Innovation, Kobe University, Kobe, Japan
| | - Kaho Fukui
- Graduate School of Science, Technology and Innovation, Kobe University, Kobe, Japan
| | - Kyosuke Yokoyama
- Graduate School of Science, Technology and Innovation, Kobe University, Kobe, Japan
| | - Shu Ishikawa
- Graduate School of Science, Technology and Innovation, Kobe University, Kobe, Japan
| | - Ken-ichi Yoshida
- Graduate School of Science, Technology and Innovation, Kobe University, Kobe, Japan
| | - Takashi Ohshiro
- Faculty of Engineering, Tottori University, Tottori, Japan
- Center for Research on Green Sustainable Chemistry, Tottori University, Tottori, Japan
| | - Hirokazu Suzuki
- Faculty of Engineering, Tottori University, Tottori, Japan
- Center for Research on Green Sustainable Chemistry, Tottori University, Tottori, Japan
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Park BH, Yun H, Jeong HJ. Soluble expression of recombinant coagulation factor IX protein using Escherichia coli. Biochem Biophys Rep 2024; 38:101714. [PMID: 38681671 PMCID: PMC11052911 DOI: 10.1016/j.bbrep.2024.101714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 04/01/2024] [Accepted: 04/13/2024] [Indexed: 05/01/2024] Open
Abstract
Hemophilia B is a congenital bleeding disorder caused by factor IX (FIX) deficiency. Generation of recombinant FIX (rFIX) is required for detecting a Hemophilia B indicator, anti-FIX antibody. In this study, we described a method for producing recombinant FIX (rFIX) using Escherichia coli. We constructed a FIX-expressing plasmid without a fusion tag protein-encoding gene and produced rFIX as a soluble form within five days. Dose-dependent curve was obtained from ELISA using anti-FIX antibody, indicating that the rFIX can be used as an antigen to detect anti-FIX antibody with high affinity and sensitivity.
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Affiliation(s)
- Byoung-Hee Park
- Industry-Academia Cooperation Foundation, Hongik University, 2639 Sejong-ro, Sejong-si, 30016, South Korea
| | - Hanool Yun
- Department of Biological and Chemical Engineering, Hongik University, 2639 Sejong-ro, Sejong-si, 30016, South Korea
| | - Hee-Jin Jeong
- Department of Biological and Chemical Engineering, Hongik University, 2639 Sejong-ro, Sejong-si, 30016, South Korea
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Yun H, Kim SH, Kim SH, Park HM, Jeong HJ. Efficient generation of recombinant anti-HER2 scFv with high yield and purity using a simple method. Biotechnol J 2024; 19:e2300745. [PMID: 39014926 DOI: 10.1002/biot.202300745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 06/17/2024] [Accepted: 06/19/2024] [Indexed: 07/18/2024]
Abstract
We developed a method to produce a soluble form of a single-chain fragment variable (scFv) targeting human epithelial growth factor receptor 2 (HER2) in Escherichia coli. By optimizing the orientations of the variable heavy (VH) and variable light (VL) domains and the His-tag, we identified the HL-His type antibody with the highest HER2-binding activity. Purification of HL-His yielded 40.7 mg from a 1 L culture, achieving >99% purity. The limit of detection was determined to be 2.9 ng, demonstrating high production yield, purity, and sensitivity. Moreover, we successfully labeled HER2+ cell lines with fluorescent dye-conjugated scFv, resulting in a significantly higher observed signal-to-background ratio, compared to that of HER2- cell lines. This highlights the potential of these fluorescent scFvs as valuable probes for HER2+ breast cancer diagnostics. Notably, the process for the complete scFv production was streamlined and required only 4-5 days. Additionally, the product maintained its activity after freeze storage, allowing for large-scale production and a wide range of practical applications.
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Affiliation(s)
- Hanool Yun
- Department of Biological and Chemical Engineering, Hongik University, Sejong-si, Republic of Korea
| | - Sun-Hee Kim
- Industry-Academia Cooperation Foundation, Hongik University, Sejong-si, Republic of Korea
| | - Seung-Hee Kim
- Department of Biological and Chemical Engineering, Hongik University, Sejong-si, Republic of Korea
| | - Hae-Min Park
- Department of Chemical Engineering and Applied Chemistry, Chungnam National University, Daejeon, Republic of Korea
| | - Hee-Jin Jeong
- Department of Biological and Chemical Engineering, Hongik University, Sejong-si, Republic of Korea
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Liu X, Ding Y, Shen Y, Liu S, Liu Y, Wang Y, Wang S, Gualerzi CO, Fabbretti A, Guan L, Kong L, Zhang H, Ma H, He C. Prokaryotic Expression and Functional Verification of Antimicrobial Peptide LR GG. Int J Mol Sci 2024; 25:7072. [PMID: 39000180 PMCID: PMC11241267 DOI: 10.3390/ijms25137072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2024] [Revised: 06/17/2024] [Accepted: 06/24/2024] [Indexed: 07/16/2024] Open
Abstract
The antimicrobial peptide LRGG (LLRLLRRGGRRLLRLL-NH2) was designed and chemically synthesized in a study conducted by Jia et al. Gram-negative bacteria were found to be sensitive to LRGG and exhibited a high therapeutic index. Genetic engineering methods were used to create the prokaryotic fusion expression vector pQE-GFP-LRGG, and the resulting corresponding fusion protein GFP-LRGG was subsequently expressed and purified. The precursor GFP was then removed by TEV proteolysis, and pure LRGG was obtained after another round of purification and endotoxin removal. The prokaryotic-expressed antimicrobial peptide LRGG displays a broad-spectrum antibacterial effect on Gram-negative bacteria, and its minimum inhibitory activity (MIC) against Escherichia coli can reach 2 μg/mL. Compared to the chemically synthesized LRGG, the prokaryotic-expressed LRGG exhibits similar temperature, pH, salt ion, serum stability, and cell selectivity. Furthermore, prokaryotic-expressed LRGG showed excellent therapeutic effects in both the infection model of cell selectivity and no embryotoxicity in a Galleria mellonella infection model. The mechanism by which LRGG causes bacterial death was found to be the disruption of the Gram-negative cell membrane.
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Affiliation(s)
- Xiang Liu
- Engineering Research Center, The Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, College of Life Sciences, Jilin Agricultural University, Changchun 130118, China; (X.L.); (Y.W.)
| | - Yining Ding
- Engineering Research Center, The Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, College of Life Sciences, Jilin Agricultural University, Changchun 130118, China; (X.L.); (Y.W.)
| | - Yuhan Shen
- Engineering Research Center, The Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, College of Life Sciences, Jilin Agricultural University, Changchun 130118, China; (X.L.); (Y.W.)
| | - Sizhuo Liu
- Engineering Research Center, The Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, College of Life Sciences, Jilin Agricultural University, Changchun 130118, China; (X.L.); (Y.W.)
| | - Yuehua Liu
- Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou 310024, China
| | - Yuting Wang
- Engineering Research Center, The Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, College of Life Sciences, Jilin Agricultural University, Changchun 130118, China; (X.L.); (Y.W.)
| | - Shikun Wang
- Engineering Research Center, The Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, College of Life Sciences, Jilin Agricultural University, Changchun 130118, China; (X.L.); (Y.W.)
- Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou 310024, China
| | | | - Attilio Fabbretti
- School of Biosciences and Veterinary Medicine, University of Camerino, 62032 Camerino, Italy
| | - Lili Guan
- Engineering Research Center, The Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, College of Life Sciences, Jilin Agricultural University, Changchun 130118, China; (X.L.); (Y.W.)
| | - Lingcong Kong
- Engineering Research Center, The Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, College of Life Sciences, Jilin Agricultural University, Changchun 130118, China; (X.L.); (Y.W.)
| | - Haipeng Zhang
- Engineering Research Center, The Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, College of Life Sciences, Jilin Agricultural University, Changchun 130118, China; (X.L.); (Y.W.)
| | - Hongxia Ma
- Engineering Research Center, The Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, College of Life Sciences, Jilin Agricultural University, Changchun 130118, China; (X.L.); (Y.W.)
| | - Chengguang He
- Engineering Research Center, The Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, College of Life Sciences, Jilin Agricultural University, Changchun 130118, China; (X.L.); (Y.W.)
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Oliva B, Zervas A, Stougaard P, Westh P, Thøgersen MS. Metagenomic exploration of cold-active enzymes for detergent applications: Characterization of a novel, cold-active and alkali-stable GH8 endoglucanase from ikaite columns in SW Greenland. Microb Biotechnol 2024; 17:e14466. [PMID: 38829370 PMCID: PMC11146146 DOI: 10.1111/1751-7915.14466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 03/12/2024] [Accepted: 03/20/2024] [Indexed: 06/05/2024] Open
Abstract
Microbial communities from extreme environments are largely understudied, but are essential as producers of metabolites, including enzymes, for industrial processes. As cultivation of most microorganisms remains a challenge, culture-independent approaches for enzyme discovery in the form of metagenomics to analyse the genetic potential of a community are rapidly becoming the way forward. This study focused on analysing a metagenome from the cold and alkaline ikaite columns in Greenland, identifying 282 open reading frames (ORFs) that encoded putative carbohydrate-modifying enzymes with potential applications in, for example detergents and other processes where activity at low temperature and high pH is desired. Seventeen selected ORFs, representing eight enzyme families were synthesized and expressed in two host organisms, Escherichia coli and Aliivibrio wodanis. Aliivibrio wodanis demonstrated expression of a more diverse range of enzyme classes compared to E. coli, emphasizing the importance of alternative expression systems for enzymes from extremophilic microorganisms. To demonstrate the validity of the screening strategy, we chose a recombinantly expressed cellulolytic enzyme from the metagenome for further characterization. The enzyme, Cel240, exhibited close to 40% of its relative activity at low temperatures (4°C) and demonstrated endoglucanase characteristics, with a preference for cellulose substrates. Despite low sequence similarity with known enzymes, computational analysis and structural modelling confirmed its cellulase-family affiliation. Cel240 displayed activity at low temperatures and good stability at 25°C, activity at alkaline pH and increased activity in the presence of CaCl2, making it a promising candidate for detergent and washing industry applications.
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Affiliation(s)
- Bianca Oliva
- Section for Protein Chemistry and Enzyme Technology, Department of Biotechnology and BiomedicineTechnical University of DenmarkLyngbyDenmark
- Present address:
Synthetic and Molecular Biology Laboratory, Department of Biotechnology, Lorena School of EngineeringUniversity of São PauloLorenaSPBrazil
| | - Athanasios Zervas
- Section for Environmental Microbiology, Department of Environmental ScienceAarhus UniversityRoskildeDenmark
| | - Peter Stougaard
- Section for Environmental Microbiology, Department of Environmental ScienceAarhus UniversityRoskildeDenmark
| | - Peter Westh
- Section for Protein Chemistry and Enzyme Technology, Department of Biotechnology and BiomedicineTechnical University of DenmarkLyngbyDenmark
| | - Mariane Schmidt Thøgersen
- Section for Environmental Microbiology, Department of Environmental ScienceAarhus UniversityRoskildeDenmark
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6
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Lin TH, Cheng SY, Lin YF, Chen PT. Development of the Low-Temperature Inducible System for Recombinant Protein Production in Escherichia coli Nissle 1917. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:7318-7325. [PMID: 38506339 DOI: 10.1021/acs.jafc.4c01075] [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: 03/21/2024]
Abstract
The pET system is commonly used for producing foreign proteins in Escherichia coli, but its reliance on the costly and metabolically demanding inducer IPTG limits its industrial use. This study engineered a low-temperature inducible system (LTIS) in E. coli Nissle 1917 (EcN) by combining the T7 expression system with the thermal inducible mechanism CI857-λPRPL to generate the new LTIS strain, ENL7P. The strain ENL7P-sfGFP-Km underwent overnight culture at 37 °C for 14-16 h, followed by subculturing at 30 °C for 24 h. This resulted in a notable 5.53-fold increase in the sfGFP induction rate when the strain was cultivated under 37-30 °C conditions. Moreover, gene expression was induced using a two-stage strategy. Initially, the strain was cultured overnight at 39 °C for 14-16 h, followed by a subculture at 30 °C for 6 h, and finally, another subculture at 30 °C for 24 h. This cultivation strategy led to an impressive 158.37-fold induction rate for sfGFP. Similar effects could be achieved through utilization of the LTIS system for inducing the production of thermophilic trehalose synthase from Thermus antranikianii (TaTS). The results of this study proved that the LTIS system has the potential for industrial applications.
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Affiliation(s)
- Tzu-Han Lin
- Department of Biotechnology and Food Technology, Southern Taiwan University of Science and Technology, Tainan 710, Taiwan
| | - Shu-Yun Cheng
- Department of Biotechnology and Food Technology, Southern Taiwan University of Science and Technology, Tainan 710, Taiwan
| | - Yi-Fen Lin
- Department of Biotechnology and Food Technology, Southern Taiwan University of Science and Technology, Tainan 710, Taiwan
| | - Po-Ting Chen
- Department of Biotechnology and Food Technology, Southern Taiwan University of Science and Technology, Tainan 710, Taiwan
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7
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Hernández-Sánchez A, Páez-Pérez ED, Alfaro-Saldaña E, Olivares-Illana V, García-Meza JV. Understanding a Core Pilin of the Type IVa Pili of Acidithiobacillus thiooxidans, PilV. J Microbiol Biotechnol 2024; 34:527-537. [PMID: 38346803 PMCID: PMC11016768 DOI: 10.4014/jmb.2310.10033] [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: 10/25/2023] [Revised: 12/22/2023] [Accepted: 12/29/2023] [Indexed: 04/17/2024]
Abstract
Pilins are protein subunits of pili. The pilins of type IV pili (T4P) in pathogenic bacteria are well characterized, but anything is known about the T4P proteins in acidophilic chemolithoautotrophic microorganisms such as the genus Acidithiobacillus. The interest in T4P of A. thiooxidans is because of their possible role in cell recruitment and bacterial aggregation on the surface of minerals during biooxidation of sulfide minerals. In this study we present a successful ad hoc methodology for the heterologous expression and purification of extracellular proteins such as the minor pilin PilV of the T4P of A. thiooxidans, a pilin exposed to extreme conditions of acidity and high oxidation-reduction potentials, and that interact with metal sulfides in an environment rich in dissolved minerals. Once obtained, the model structure of A. thiooxidans PilV revealed the core basic architecture of T4P pilins. Because of the acidophilic condition, we carried out in silico characterization of the protonation status of acidic and basic residues of PilV in order to calculate the ionization state at specific pH values and evaluated their pH stability. Further biophysical characterization was done using UV-visible and fluorescence spectroscopy and the results showed that PilV remains soluble and stable even after exposure to significant changes of pH. PilV has a unique amino acid composition that exhibits acid stability, with significant biotechnology implications such as biooxidation of sulfide minerals. The biophysics profiles of PilV open new paradigms about resilient proteins and stimulate the study of other pilins from extremophiles.
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Affiliation(s)
- Araceli Hernández-Sánchez
- Geomicrobiología, Metalurgia, Universidad Autónoma de San Luis Potosí, Sierra Leona 550, San Luis Potosí, 78210, SLP, México
| | - Edgar D. Páez-Pérez
- Geomicrobiología, Metalurgia, Universidad Autónoma de San Luis Potosí, Sierra Leona 550, San Luis Potosí, 78210, SLP, México
| | - Elvia Alfaro-Saldaña
- Geomicrobiología, Metalurgia, Universidad Autónoma de San Luis Potosí, Sierra Leona 550, San Luis Potosí, 78210, SLP, México
| | - Vanesa Olivares-Illana
- Laboratorio de Interacciones Biomoleculares y Cáncer. Instituto de Física, Universidad Autónoma de San Luis Potosí, Av. Parque Chapultepec 1570, Privadas del Pedregal, San Luis Potosí, 78210, SLP, México
| | - J. Viridiana García-Meza
- Geomicrobiología, Metalurgia, Universidad Autónoma de San Luis Potosí, Sierra Leona 550, San Luis Potosí, 78210, SLP, México
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8
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Zhou Q, Huang D, Yang H, Hong Z, Wang C. Improvement of Carotenoids' Production by Increasing the Activity of Beta-Carotene Ketolase with Different Strategies. Microorganisms 2024; 12:377. [PMID: 38399781 PMCID: PMC10891602 DOI: 10.3390/microorganisms12020377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 02/04/2024] [Accepted: 02/06/2024] [Indexed: 02/25/2024] Open
Abstract
Canthaxanthin is an important antioxidant with wide application prospects, and β-carotene ketolase is the key enzyme involved in the biosynthesis of canthaxanthin. However, the challenge for the soluble expression of β-carotene ketolase is that it hinders the large-scale production of carotenoids such as canthaxanthin and astaxanthin. Hence, this study employed several strategies aiming to improve the soluble expression of β-carotene ketolase and its activity, including selecting optimal expression vectors, screening induction temperatures, adding soluble expression tags, and adding a molecular chaperone. Results showed that all these strategies can improve the soluble expression and activity of β-carotene ketolase in Escherichia coli. In particular, the production of soluble β-carotene ketolase was increased 8 times, with a commercial molecular chaperon of pG-KJE8, leading to a 1.16-fold enhancement in the canthaxanthin production from β-carotene. Interestingly, pG-KJE8 could also enhance the soluble expression of β-carotene ketolase derived from eukaryotic microalgae. Further research showed that the production of canthaxanthin and echinenone was significantly improved by as many as 30.77 times when the pG-KJE8 was added, indicating the molecular chaperone performed differently among different β-carotene ketolase. This study not only laid a foundation for further research on the improvement of β-carotene ketolase activity but also provided new ideas for the improvement of carotenoid production.
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Affiliation(s)
- Qiaomian Zhou
- Guangdong Technology Research Center for Marine Algal Bioengineering, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China; (Q.Z.); (D.H.)
| | - Danqiong Huang
- Guangdong Technology Research Center for Marine Algal Bioengineering, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China; (Q.Z.); (D.H.)
- Shenzhen Engineering Laboratory for Marine Algal Biological Development and Application, Shenzhen 518060, China
| | - Haihong Yang
- Guangdong Technology Research Center for Marine Algal Bioengineering, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China; (Q.Z.); (D.H.)
| | - Zeyu Hong
- Guangdong Technology Research Center for Marine Algal Bioengineering, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China; (Q.Z.); (D.H.)
| | - Chaogang Wang
- Guangdong Technology Research Center for Marine Algal Bioengineering, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China; (Q.Z.); (D.H.)
- Shenzhen Engineering Laboratory for Marine Algal Biological Development and Application, Shenzhen 518060, China
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Xu MN, Zhong MZ, Feng SN, Xu YQ, Peng XM, Zeng K, Huang XW. Production of recombinant HPV11/16 E6/E7-MBP-His 6 fusion proteins and their potential to induce cytokine secretion by immune cells in peripheral blood. Virol J 2024; 21:10. [PMID: 38183109 PMCID: PMC10768090 DOI: 10.1186/s12985-023-02281-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 12/28/2023] [Indexed: 01/07/2024] Open
Abstract
Human papillomavirus (HPV) infection poses a significant threat to public health worldwide. Targeting the function of HPV E6 and E7 proteins and activating the host immune response against these proteins represent promising therapeutic strategies for combating HPV-related diseases. Consequently, the efficient production of soluble, high-purity E6 and E7 proteins is crucial for function and host immune response studies. In this context, we selected the pMCSG19 protein expression vector for Escherichia coli to produce soluble MBP-His6 tagged HPV11/16 E6/E7 proteins, achieving relatively high purity and yield. Notably, these proteins exhibited low toxicity to peripheral blood mononuclear cells (PBMCs) and did not compromise their viability. Additionally, the recombinant proteins were capable of inducing the secretion of multiple cytokines by immune cells in peripheral blood, indicating their potential to elicit immune responses. In conclusion, our study offers a novel approach for the production of HPV11/16 E6/E7 fusion proteins with relatively high purity and yield. The fusing HPV11/16 E6/E7 proteins to MBP-His6 tag may serve as a valuable method for large-scale protein production in future research endeavors.
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Affiliation(s)
- Mei-Nian Xu
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Mei-Zhen Zhong
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Si-Ning Feng
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yan-Qin Xu
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xiao-Ming Peng
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Kang Zeng
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, China.
| | - Xiao-Wen Huang
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, China.
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10
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Debnath N, Yadav P, Mehta PK, Gupta P, Kumar D, Kumar A, Gautam V, Yadav AK. Designer probiotics: Opening the new horizon in diagnosis and prevention of human diseases. Biotechnol Bioeng 2024; 121:100-117. [PMID: 37881101 DOI: 10.1002/bit.28574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 07/19/2023] [Accepted: 09/23/2023] [Indexed: 10/27/2023]
Abstract
Probiotic microorganisms have been used for therapeutic purposes for over a century, and recent advances in biotechnology and genetic engineering have opened up new possibilities for developing therapeutic approaches using indigenous probiotic microorganisms. Diseases are often related to metabolic and immunological factors, which play a critical role in their onset. With the help of advanced genetic tools, probiotics can be modified to produce or secrete important therapeutic peptides directly into mucosal sites, increasing their effectiveness. One potential approach to enhancing human health is through the use of designer probiotics, which possess immunogenic characteristics. These genetically engineered probiotics hold promise in providing novel therapeutic options. In addition to their immunogenic properties, designer probiotics can also be equipped with sensors and genetic circuits, enabling them to detect a range of diseases with remarkable precision. Such capabilities may significantly advance disease diagnosis and management. Furthermore, designer probiotics have the potential to be used in diagnostic applications, offering a less invasive and more cost-effective alternative to conventional diagnostic techniques. This review offers an overview of the different functional aspects of the designer probiotics and their effectiveness on different diseases and also, we have emphasized their limitations and future implications. A comprehensive understanding of these functional attributes may pave the way for new avenues of prevention and the development of effective therapies for a range of diseases.
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Affiliation(s)
- Nabendu Debnath
- Centre for Molecular Biology, Central University of Jammu, Samba, Jammu and Kashmir (UT), India
| | - Pooja Yadav
- Centre for Molecular Biology, Central University of Jammu, Samba, Jammu and Kashmir (UT), India
| | - Praveen K Mehta
- Centre for Molecular Biology, Central University of Jammu, Samba, Jammu and Kashmir (UT), India
| | - Priyamvada Gupta
- Centre of Experimental Medicine and Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Deepak Kumar
- Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Ashwani Kumar
- Department of Nutrition Biology, Central University of Haryana, Mahendergarh, Haryana, India
| | - Vibhav Gautam
- Centre of Experimental Medicine and Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Ashok K Yadav
- Centre for Molecular Biology, Central University of Jammu, Samba, Jammu and Kashmir (UT), India
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