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Zheng H, Zhao H, Xiong H, Awais MM, Zeng S, Sun J. Bioproduction and immunogenic evaluation of SARS-CoV-2 prototype vaccine in silkworm BmN cells. Int J Biol Macromol 2024; 276:134027. [PMID: 39033889 DOI: 10.1016/j.ijbiomac.2024.134027] [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: 04/08/2024] [Revised: 07/17/2024] [Accepted: 07/18/2024] [Indexed: 07/23/2024]
Abstract
COVID-19, caused by the novel coronavirus SARS-CoV-2, has presented a significant challenge to global health, security, and the economy. Vaccination is considered a crucial measure in preventing virus transmission. The silkworm bioreactor has gained widespread usage in antigen presentation, monoclonal antibody preparation, and subunit vaccine development due to its safety, efficiency, convenience, and cost-effectiveness. In this study, we employed silkworm BmN cells and the silkworm MultiBac multigene co-expression system to successfully produce two prototype vaccines: a recombinant baculovirus vector vaccine (NPV) co-displaying the SARS-CoV-2 virus capsid protein and a capsid protein virus-like particle (VLP) vaccine. Following the purification of these vaccines, we immunized BALB/c mice to evaluate their immunogenicity. Our results demonstrated that both VLP and NPV prototype vaccines effectively elicited robust immune responses in mice. However, when equal inoculation doses between groups were compared, the recombinant NPV vaccine exhibited significantly higher serum antibody titers and increased expression of spleen cytokines and lymphocyte immune regulatory factors compared to the VLP group. These results suggested an increased immune efficacy of the recombinant NPV vaccine. Conversely, the VLP prototype vaccine displayed more pronounced effects on lymphocyte cell differentiation induction. This study successfully constructed two distinct morphological recombinant vaccine models and systematically elucidated their differences in humoral immune response and lymphocyte differentiation rate. Furthermore, it has fully harnessed the immense potential of silkworm bioreactors for vaccine research and development, providing valuable technical insights for studying mutated viruses like coronaviruses.
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Affiliation(s)
- Hao Zheng
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, Subtropical Sericulture and Mulberry Resources Protection and Safety Engineering Research Center, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong 510642, China
| | - Hengfeng Zhao
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, Subtropical Sericulture and Mulberry Resources Protection and Safety Engineering Research Center, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong 510642, China
| | - Haifan Xiong
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, Subtropical Sericulture and Mulberry Resources Protection and Safety Engineering Research Center, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong 510642, China
| | - Mian Muhammad Awais
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, Subtropical Sericulture and Mulberry Resources Protection and Safety Engineering Research Center, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong 510642, China
| | - Songrong Zeng
- Guangdong Provincial Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in Northern Region, Shaoguan University, Shaoguan 512005, China
| | - Jingchen Sun
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, Subtropical Sericulture and Mulberry Resources Protection and Safety Engineering Research Center, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong 510642, China.
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Lan W, Geng W, Jiang X, Chen F, Zhou M, Shen G, Lin P, Xia Q, Zhao P, Li Z. Transgenic silkworm expressing bioactive human ciliary neurotrophic factor for biomedical application. INSECT SCIENCE 2024. [PMID: 39219303 DOI: 10.1111/1744-7917.13442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2024] [Revised: 07/29/2024] [Accepted: 07/31/2024] [Indexed: 09/04/2024]
Abstract
Ciliary neurotrophic factor (CNTF) acts as a potent neuroprotective agent in neuronal survival and regeneration, and can also induce the differentiation of several stem cells into neurons, which highlights the broad application of CNTF in biomedicine. However, large-scale production of bioactive recombinant human CNTF protein remains to be explored. Herein, this study aims to express a bioactive human CNTF protein on a large scale by genetically engineering a silk gland bioreactor of silkworm. Our results showed that CNTF protein was successfully expressed in the middle silk gland (MSG) of silkworm, which can be secreted into the silks with the amount of 3.2 mg/g cocoons. The fabrication of human CNTF-functionalized silk material was able to promote proliferation and migration of neural cells when compared to the natural silk protein. Importantly, this functional silk material could also facilitate neurite outgrowth of mouse retinal ganglion cell (RGC-5) cells. All these data demonstrated a high bioactivity of the recombinant human CNTF protein expressed in the MSG of silkworm. The further fabrication of different silk materials with CNTF bioactivity will give biomedical applications in tissue engineering and neuroregeneration.
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Affiliation(s)
- Weiqun Lan
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City & Southwest University, Biological Science Research Center, Southwest University, Chongqing, China
- Key Laboratory for Germplasm Creation in Upper Reaches of the Yangtze River, Ministry of Agriculture and Rural Affairs, Chongqing, China
| | - Wenjing Geng
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City & Southwest University, Biological Science Research Center, Southwest University, Chongqing, China
- Key Laboratory for Germplasm Creation in Upper Reaches of the Yangtze River, Ministry of Agriculture and Rural Affairs, Chongqing, China
| | - Xuechun Jiang
- Weste College, Southwest University, Chongqing, China
| | - Feng Chen
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City & Southwest University, Biological Science Research Center, Southwest University, Chongqing, China
- Key Laboratory for Germplasm Creation in Upper Reaches of the Yangtze River, Ministry of Agriculture and Rural Affairs, Chongqing, China
| | - Mingyi Zhou
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City & Southwest University, Biological Science Research Center, Southwest University, Chongqing, China
- Key Laboratory for Germplasm Creation in Upper Reaches of the Yangtze River, Ministry of Agriculture and Rural Affairs, Chongqing, China
| | - Guanwang Shen
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City & Southwest University, Biological Science Research Center, Southwest University, Chongqing, China
- Key Laboratory for Germplasm Creation in Upper Reaches of the Yangtze River, Ministry of Agriculture and Rural Affairs, Chongqing, China
| | - Ping Lin
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City & Southwest University, Biological Science Research Center, Southwest University, Chongqing, China
- Key Laboratory for Germplasm Creation in Upper Reaches of the Yangtze River, Ministry of Agriculture and Rural Affairs, Chongqing, China
| | - Qingyou Xia
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City & Southwest University, Biological Science Research Center, Southwest University, Chongqing, China
- Key Laboratory for Germplasm Creation in Upper Reaches of the Yangtze River, Ministry of Agriculture and Rural Affairs, Chongqing, China
| | - Ping Zhao
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City & Southwest University, Biological Science Research Center, Southwest University, Chongqing, China
- Key Laboratory for Germplasm Creation in Upper Reaches of the Yangtze River, Ministry of Agriculture and Rural Affairs, Chongqing, China
| | - Zhiqing Li
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City & Southwest University, Biological Science Research Center, Southwest University, Chongqing, China
- Key Laboratory for Germplasm Creation in Upper Reaches of the Yangtze River, Ministry of Agriculture and Rural Affairs, Chongqing, China
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3
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Wang F, Wang RY, Zhong DB, Zhao P, Xia QY. Highly efficient expression of human extracellular superoxide dismutase (rhEcSOD) with ultraviolet-B-induced damage-resistance activity in transgenic silkworm cocoons. INSECT SCIENCE 2024; 31:1150-1164. [PMID: 38010045 DOI: 10.1111/1744-7917.13289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 09/20/2023] [Accepted: 09/24/2023] [Indexed: 11/29/2023]
Abstract
Extracellular superoxide dismutase (EcSOD) protects tissues from oxidative stress, and thus is considered as a therapeutic agent for many diseases such as atherosclerosis, hypertension, and cancer. However, cost-effective production of bioactive recombinant human EcSOD (rhEcSOD) remains a challenge. Herein, we developed an efficient strategy for producing active rhEcSOD by transgenic silkworms. rhEcSOD was successfully synthesized as homodimers and homotetramers in the middle silk gland and spun into the cocoons with a concentration of 9.48 ± 0.21 mg/g. Purification of rhEcSOD from the cocoons could be conveniently achieved with a purity of 99.50% and a yield of 3.5 ± 0.5 mg/g. Additionally, N-glycosylation at the only site of N89 in rhEcSOD with 10 types were identified. The purified rhEcSOD gained the potent enzymatic activity of 4 162 ± 293 U/mg after Cu/Zn ions incorporation. More importantly, rhEcSOD was capable of penetrating and accumulating in the nuclei of cells to maintain cell morphology and attenuate ultraviolet B-induced cell apoptosis by eliminating reactive oxygen species and inhibiting the C-Jun N-terminal kinase signaling pathway. These results demonstrated that the transgenic silkworm could successfully produce rhEcSOD with enzymatic and biological activities for biomedical applications.
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Affiliation(s)
- Feng Wang
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, Biological Science Research Center, Southwest University, Chongqing, China
| | - Ri-Yuan Wang
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, Biological Science Research Center, Southwest University, Chongqing, China
| | - De-Bin Zhong
- Century Legend Biotechnology Research Institute (Chongqing) Co., Ltd., Chongqing, China
| | - Ping Zhao
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, Biological Science Research Center, Southwest University, Chongqing, China
| | - Qing-You Xia
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, Biological Science Research Center, Southwest University, Chongqing, China
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Huang K, Yan X, Li Z, Liu F, Cui K, Liu Q. Construction and Identification of a Breast Bioreactor for Human-Derived Hypoglycemic Protein Amylin. Life (Basel) 2024; 14:191. [PMID: 38398700 PMCID: PMC10890372 DOI: 10.3390/life14020191] [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: 11/29/2023] [Revised: 01/23/2024] [Accepted: 01/25/2024] [Indexed: 02/25/2024] Open
Abstract
The mammary gland of mammals can generate numerous bioactive proteins. To express the human amylin protein in the mammary glands of domestic animals, we engineered a transgenic mammary gland bioreactor. For this study, we produced transgenic mice through prokaryotic microinjection. RT-PCR, qPCR, and Western blotting confirmed the presence of transgenes in the mice. The ELISA assay indicated an amylin yield of approximately 1.44 μg/mL in the mice milk. Further research revealed that consuming milk containing amylin resulted in a slight, but insignificant enhancement in food consumption, blood sugar equilibrium, and glucose tolerance. The influence of amylin-fortified milk on the abundance of fecal strains in mice was examined, and a significant difference in the quantity of strains needed for fatty acid synthesis and metabolism was discovered. The amylin protein gathered from humans is safe to consume, as no harmful effects were detected in the mice. Our study examined the production of human amylin using a new safety strategy that could potentially alleviate diabetic symptoms in the future through oral administration of milk containing amylin.
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Affiliation(s)
- Kongwei Huang
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, School of Life Science and Engineering, Foshan University, Foshan 528225, China; (X.Y.); (K.C.)
| | - Xiuying Yan
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, School of Life Science and Engineering, Foshan University, Foshan 528225, China; (X.Y.); (K.C.)
| | - Zhipeng Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning 530004, China; (Z.L.); (F.L.)
| | - Fuhang Liu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning 530004, China; (Z.L.); (F.L.)
| | - Kuiqing Cui
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, School of Life Science and Engineering, Foshan University, Foshan 528225, China; (X.Y.); (K.C.)
| | - Qingyou Liu
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, School of Life Science and Engineering, Foshan University, Foshan 528225, China; (X.Y.); (K.C.)
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Sadeghi-Ardebili M, Hasannia S, Dabirmanesh B, Khavari-Nejad RA. Functional characterization of the dimeric form of PDGF-derived fusion peptide fabricated based on theoretical arguments. Sci Rep 2024; 14:1003. [PMID: 38200288 PMCID: PMC10781716 DOI: 10.1038/s41598-024-51707-2] [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] [Accepted: 01/08/2024] [Indexed: 01/12/2024] Open
Abstract
A skin wound leads to the loss of skin integrity and the influx of pathogens into the tissue. Platelet-derived growth factors (PDGFs) are cytokines released from alpha granules during wound healing and interact with their cell surface receptors and activate signals involved in chemotaxis, growth, proliferation, and differentiation pathways. Due to the low stability of growth factors (GFs), a new peptide-derived PDGF-BB was designed, expressed in the Shuffle strain of E. coli, and purified by Ni-NTA agarose affinity column chromatography. The effect of fusion peptide was then evaluated on L929 fibroblast cells and animal models with skin lesions. In vitro, studies showed that the peptide led to an increase in the migration of fibroblast cells in the scratch assay. Its positive effect on wound healing was also observed in the skin-injured rats after 3, 7, and 12 days. A significant rise in neutrophils and granular tissue formation, re-epithelialization, angiogenesis, and collagen formation was exhibited on the third day of treatment when compared to the control group. The results showed that, despite reducing PDGF size, the fusion peptide was able to maintain at least some of the known functions attributed to full-length PDGF and showed positive results in wound healing.
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Affiliation(s)
- Maryam Sadeghi-Ardebili
- Department of Biology, Science and Research Branch, Islamic Azad University, PO BoX 14515-775, Tehran, Iran
| | - Sadegh Hasannia
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, PO Box 14115-175, Tehran, Iran.
| | - Bahareh Dabirmanesh
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, PO Box 14115-175, Tehran, Iran
| | - Ramazan Ali Khavari-Nejad
- Department of Biology, Science and Research Branch, Islamic Azad University, PO BoX 14515-775, Tehran, Iran
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Wang SL, Li XW, Xu W, Yu QY, Fang SM. Advances of regenerated and functionalized silk biomaterials and application in skin wound healing. Int J Biol Macromol 2024; 254:128024. [PMID: 37972830 DOI: 10.1016/j.ijbiomac.2023.128024] [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: 08/09/2023] [Revised: 10/26/2023] [Accepted: 11/09/2023] [Indexed: 11/19/2023]
Abstract
The cocoon silk of silkworms (Bombyx mori) has multiple potential applications in biomedicine due to its good biocompatibility, mechanical properties, degradability, and plasticity. Numerous studies have confirmed that silk material dressings are more effective than traditional ones in the skin wound healing process. Silk material research has recently moved toward functionalized biomaterials and achieved remarkable results. Herein, we summarize the recent advances in functionalized silk materials and their efficacy in skin wound healing. In particular, transgenic technology has realized the specific expression of human growth factors in the silk glands of the silkworms, which lays the foundation for fabricating novel and low-cost functionalized materials. Without a green and safe preparation process, the best raw silk materials cannot be made into medically safe products. Therefore, we provide an overview of green and gentle approaches for silk degumming and silk sericin (SS) extraction. Moreover, we summarize and discuss the processing methods of silk fibroin (SF) and SS materials and their potential applications, such as burns, diabetic wounds, and other wounds. This review aims to enhance our understanding of new advances and directions in silk materials and guide future biomedical research.
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Affiliation(s)
- Sheng-Lan Wang
- College of Life Science, China West Normal University, Nanchong 637002, Sichuan, China
| | - Xiao-Wei Li
- School of Life Sciences, Chongqing University, Chongqing 400044, PR China
| | - Wei Xu
- Department of Dermatology, Chongqing Hospital of Traditional Chinese Medicine, No. 40 Daomenkou St., District Yuzhong, Chongqing 400011, China
| | - Quan-You Yu
- School of Life Sciences, Chongqing University, Chongqing 400044, PR China
| | - Shou-Min Fang
- College of Life Science, China West Normal University, Nanchong 637002, Sichuan, China.
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7
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Aramwit P, Jiang Q, Muppuri S, Reddy N. Transgenic modifications of silkworms as a means to obtain therapeutic biomolecules and protein fibers with exceptional properties. Biotechnol Bioeng 2023; 120:2827-2839. [PMID: 37243890 DOI: 10.1002/bit.28455] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 04/25/2023] [Accepted: 05/18/2023] [Indexed: 05/29/2023]
Abstract
Transgenic modification of Bombyx mori silkworms is a benign approach for the production of silk fibers with extraordinary properties and also to generate therapeutic proteins and other biomolecules for various applications. Silk fibers with fluorescence lasting more than a year, natural protein fibers with strength and toughness exceeding that of spider silk, proteins and therapeutic biomolecules with exceptional properties have been developed using transgenic technology. The transgenic modifications have been done primarily by modifying the silk sericin and fibroin genes and also the silk producing glands. Although the genetic modifications were typically performed using the sericin 1 and other genes, newer techniques such as CRISPR/Cas9 have enabled successful modifications of both the fibroin H-chain and L-chain. Such modifications have led to the production of therapeutic proteins and other biomolecules in reasonable quantities at affordable costs for tissue engineering and other medical applications. Transgenically modified silkworms also have distinct and long-lasting fluorescence useful for bioimaging applications. This review presents an overview of the transgenic techniques for modifications of B. mori silkworms and the properties obtained due to such modifications with particular focus on production of growth factors, fluorescent proteins, and high performance protein fibers.
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Affiliation(s)
- Pornanong Aramwit
- Department of Pharmacy Practice, Faculty of Pharmaceutical Sciences and Center of Excellence in Bioactive Resources for Innovative Clinical Applications, Chulalongkorn University, Bangkok, Thailand
- The Academy of Science, The Royal Society of Thailand, Dusit, Bangkok, Thailand
| | - Qiuran Jiang
- Key Laboratory of Textile Science &Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai, China
- College of Textiles, Donghua University, Shanghai, China
| | - Supritha Muppuri
- Center for Incubation, Innovation, Research and Consultancy, Jyothy Institute of Technology, Thataguni Post, Bengaluru, India
| | - Narendra Reddy
- Center for Incubation, Innovation, Research and Consultancy, Jyothy Institute of Technology, Thataguni Post, Bengaluru, India
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Zhang W, Li Z, Lan W, Guo H, Chen F, Wang F, Shen G, Xia Q, Zhao P. Bioengineered silkworm model for expressing human neurotrophin-4 with potential biomedical application. Front Physiol 2023; 13:1104929. [PMID: 36685209 PMCID: PMC9846172 DOI: 10.3389/fphys.2022.1104929] [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: 11/22/2022] [Accepted: 12/20/2022] [Indexed: 01/05/2023] Open
Abstract
Neurotrophin-4 (NT-4) is a neurotrophic factor that plays important roles in maintaining nerve cell survival, regulating neuronal differentiation and apoptosis, and promoting nerve injury repair. However, the source of sufficient NT-4 protein and efficient delivery of NT-4 remain a challenge. This study aims to express an activated human NT-4 protein in a large scale by genetically engineering silk gland bioreactor of silkworm as a host. We showed that the expression of human NT-4-functionalized silk material could promote proliferation of mouse HT22 cells when compared to the natural silk protein, and no obvious cytotoxicity was observed under the conditions of different silk materials. Importantly, this functional silk material was able to induce the potential differentiation of HT22 cells, promote peripheral neural cell migration and neurite outgrowth of chicken embryo dorsal root ganglion (DRG). All these results demonstrated a high bioactivity of human NT-4 protein produced in silk gland. Therefore, based on the silkworm model, the further fabrication of different silk materials-carrying active NT-4 protein with good mechanical properties and great biocompatibility will give promising applications in tissue engineering and neurons regeneration.
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Affiliation(s)
- Wenchang Zhang
- State Key Laboratory of Silkworm Genome Biology, Biological Science Research Center, Southwest University, Chongqing, China,Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City & Southwest University, Chongqing, China,Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing, China
| | - Zhiqing Li
- State Key Laboratory of Silkworm Genome Biology, Biological Science Research Center, Southwest University, Chongqing, China,Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City & Southwest University, Chongqing, China,Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing, China
| | - Weiqun Lan
- State Key Laboratory of Silkworm Genome Biology, Biological Science Research Center, Southwest University, Chongqing, China,Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City & Southwest University, Chongqing, China,Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing, China
| | - Hao Guo
- State Key Laboratory of Silkworm Genome Biology, Biological Science Research Center, Southwest University, Chongqing, China,Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City & Southwest University, Chongqing, China,Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing, China
| | - Feng Chen
- State Key Laboratory of Silkworm Genome Biology, Biological Science Research Center, Southwest University, Chongqing, China,Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City & Southwest University, Chongqing, China,Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing, China
| | - Feng Wang
- State Key Laboratory of Silkworm Genome Biology, Biological Science Research Center, Southwest University, Chongqing, China,Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City & Southwest University, Chongqing, China,Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing, China
| | - Guanwang Shen
- State Key Laboratory of Silkworm Genome Biology, Biological Science Research Center, Southwest University, Chongqing, China,Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City & Southwest University, Chongqing, China,Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing, China
| | - Qingyou Xia
- State Key Laboratory of Silkworm Genome Biology, Biological Science Research Center, Southwest University, Chongqing, China,Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City & Southwest University, Chongqing, China,Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing, China
| | - Ping Zhao
- State Key Laboratory of Silkworm Genome Biology, Biological Science Research Center, Southwest University, Chongqing, China,Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City & Southwest University, Chongqing, China,Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing, China,*Correspondence: Ping Zhao,
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Sabarees G, Tamilarasi G, Velmurugan V, Alagarsamy V, Sibuh BZ, Sikarwar M, Taneja P, Kumar A, Gupta PK. Emerging trends in silk fibroin based nanofibers for impaired wound healing. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Xu S, Yang Q, Wang R, Tian C, Ji Y, Tan H, Zhao P, Kaplan DL, Wang F, Xia Q. Genetically engineered pH-responsive silk sericin nanospheres with efficient therapeutic effect on ulcerative colitis. Acta Biomater 2022; 144:81-95. [PMID: 35288310 DOI: 10.1016/j.actbio.2022.03.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Revised: 02/20/2022] [Accepted: 03/07/2022] [Indexed: 02/07/2023]
Abstract
Ulcerative colitis (UC) is one type of inflammatory bowel disease (IBD) and lactoferrin (LF) is a promising protein drug to treat UC. However, targeted LF delivery to optimize bioavailability, targeting and effectiveness remains a challenge. Here, we report an effective strategy to fabricate silk sericin nanospheres systems for the delivery of recombinant human lactoferrin (SS-NS-rhLF). The system is based on the use of optimized transgenic silkworms to generate genetically engineered silk fibers (rhLF-silks). The rhLF silks were used for fabricating SS-NS-rhLF by ethanol precipitation. The SS-NS-rhLF were stable with a spherical morphology with an average diameter of 123 nm. The negatively charged sericins in a pH ≥ 5.5 environment achieved specific targeting of the SS-NS-rhLF to positively charged colonic sites. The SS-NS-rhLF achieved efficient uptake by cells in the inflamed colon of mice when compared to free lactoferrin in solution (SOL-rhLF). Furthermore, oral administration of the SS-NS-rhLF with low dose of rhLF significantly relived symptoms of UC in mice and achieved comparable therapeutic effect to the high dose of SOL-rhLF by supporting the reformation of cell structure and length of colon tissue, reducing the release of inflammatory factors, inhibiting the activation of the NF-κB inflammatory pathway, and maintaining a stable intestinal microbial population in mice. These results showed that the SS-NS-rhLF is a promising system for colitis treatment. STATEMENT OF SIGNIFICANCE: Targeting and effective delivery of multiple biological functional protein human lactoferrin (rhLF) is a promising strategy to treat ulcerative colitis in the clinic. Here, rhLF-transgenic silk cocoons were used to fabricate a rhLF-sericin nanosphere delivery system (SS-NS-rhLF). The fabricated SS-NS-rhLF showed identical spherical morphology, stable structure, sustainable rhLF release, efficient cell uptake and negative charge in an environment of pH above 5.5, thus realized the specific targeting to the positively charged colonic sites to treat UC mice through oral administration. The therapeutic effect of SS-NS-rhLF with a low rhLF dose in the UC mice was comparable to the high dose of free rhLF treatment in solution form, suggesting that the SS-NS-rhLF is a promising system for colitis treatment.
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Rao SS, Prabhu A, Kudkuli J, Surya S, Rekha P. Hyaluronic acid sustains platelet stability with prolonged growth factor release and accelerates wound healing by enhancing proliferation and collagen deposition in diabetic mice. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2021.102898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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12
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Hu J, Peng P, Li J, Zhang Q, Li R, Wang X, Gu M, Hu Z, Hu S, Liu X, Jiao X, Peng D, Liu X. Single Dose of Bivalent H5 and H7 Influenza Virus-Like Particle Protects Chickens Against Highly Pathogenic H5N1 and H7N9 Avian Influenza Viruses. Front Vet Sci 2021; 8:774630. [PMID: 34859093 PMCID: PMC8632145 DOI: 10.3389/fvets.2021.774630] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Accepted: 10/05/2021] [Indexed: 11/13/2022] Open
Abstract
Both H5N1 and H7N9 subtype avian influenza viruses cause enormous economic losses and pose considerable threats to public health. Bivalent vaccines against both two subtypes are more effective in control of H5N1 and H7N9 viruses in poultry and novel egg-independent vaccines are needed. Herein, H5 and H7 virus like particle (VLP) were generated in a baculovirus expression system and a bivalent H5+H7 VLP vaccine candidate was prepared by combining these two antigens. Single immunization of the bivalent VLP or commercial inactivated vaccines elicited effective antibody immune responses, including hemagglutination inhibition, virus neutralizing and HA-specific IgG antibodies. All vaccinated birds survived lethal challenge with highly pathogenic H5N1 and H7N9 viruses. Furthermore, the bivalent VLP significantly reduced viral shedding and virus replication in chickens, which was comparable to that observed for the commercial inactivated vaccine. However, the bivalent VLP was better than the commercial vaccine in terms of alleviating pulmonary lesions caused by H7N9 virus infection in chickens. Therefore, our study suggests that the bivalent H5+H7 VLP vaccine candidate can serve as a critical alternative for the traditional egg-based inactivated vaccines against H5N1 and H7N9 avian influenza virus infection in poultry.
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Affiliation(s)
- Jiao Hu
- Animal Infectious Disease Laboratory, School of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China.,Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-Food Safety and Quality, Ministry of Agriculture of China (26116120), Yangzhou University, Yangzhou, China
| | - Peipei Peng
- Animal Infectious Disease Laboratory, School of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China.,Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-Food Safety and Quality, Ministry of Agriculture of China (26116120), Yangzhou University, Yangzhou, China
| | - Jun Li
- Animal Infectious Disease Laboratory, School of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China.,Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-Food Safety and Quality, Ministry of Agriculture of China (26116120), Yangzhou University, Yangzhou, China
| | - Qi Zhang
- Animal Infectious Disease Laboratory, School of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China.,Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-Food Safety and Quality, Ministry of Agriculture of China (26116120), Yangzhou University, Yangzhou, China
| | - Rumeng Li
- Animal Infectious Disease Laboratory, School of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China.,Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-Food Safety and Quality, Ministry of Agriculture of China (26116120), Yangzhou University, Yangzhou, China
| | - Xiaoquan Wang
- Animal Infectious Disease Laboratory, School of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China.,Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-Food Safety and Quality, Ministry of Agriculture of China (26116120), Yangzhou University, Yangzhou, China
| | - Min Gu
- Animal Infectious Disease Laboratory, School of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China.,Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-Food Safety and Quality, Ministry of Agriculture of China (26116120), Yangzhou University, Yangzhou, China
| | - Zenglei Hu
- Animal Infectious Disease Laboratory, School of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, China
| | - Shunlin Hu
- Animal Infectious Disease Laboratory, School of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China.,Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-Food Safety and Quality, Ministry of Agriculture of China (26116120), Yangzhou University, Yangzhou, China
| | - Xiaowen Liu
- Animal Infectious Disease Laboratory, School of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China.,Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-Food Safety and Quality, Ministry of Agriculture of China (26116120), Yangzhou University, Yangzhou, China
| | - Xinan Jiao
- Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-Food Safety and Quality, Ministry of Agriculture of China (26116120), Yangzhou University, Yangzhou, China.,Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China
| | - Daxin Peng
- Animal Infectious Disease Laboratory, School of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China.,Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-Food Safety and Quality, Ministry of Agriculture of China (26116120), Yangzhou University, Yangzhou, China
| | - Xiufan Liu
- Animal Infectious Disease Laboratory, School of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China.,Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-Food Safety and Quality, Ministry of Agriculture of China (26116120), Yangzhou University, Yangzhou, China
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13
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Wu M, Huang S, Ye X, Ruan J, Zhao S, Ye J, Zhong B. Human epidermal growth factor-functionalized cocoon silk with improved cell proliferation activity for the fabrication of wound dressings. J Biomater Appl 2021; 36:722-730. [PMID: 33663262 DOI: 10.1177/0885328221997981] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Human epidermal growth factor (hEGF) is a key factor involved in wound healing owing to its powerful ability to stimulate cell proliferation. In this study, we used piggyBac transposon technology to produce transgenic silkworms expressing the hEGF protein fused to truncated heavy chain (FibH-hEGF). The FibH-hEGF fusion protein was successfully expressed and secreted into silkworm cocoons. Compared to wild-type silk, the transgenic silkworm silk had the similar morphology about silks fiber surface and cocoon nets, while the secondary structure between the transgenic silk and wild-type silk was different. Most importantly, transgenic silkworm cocoon silk powder extract significantly increased human fibroblast FIB cell proliferation for a long duration with no apparent cytotoxicity. Our study provides a promising method for obtaining cost-effective and functional biomaterials for the fabrication of wound dressings.
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Affiliation(s)
- Meiyu Wu
- College of Animal Science, 12377Zhejiang University, Hangzhou, Zhejiang, China
| | - Shenyu Huang
- College of Animal Science, 12377Zhejiang University, Hangzhou, Zhejiang, China
| | - Xiaogang Ye
- College of Animal Science, 12377Zhejiang University, Hangzhou, Zhejiang, China
| | - Jinghua Ruan
- College of Animal Science, 12377Zhejiang University, Hangzhou, Zhejiang, China
| | - Shuo Zhao
- College of Animal Science, 12377Zhejiang University, Hangzhou, Zhejiang, China
| | - Juan Ye
- College of Animal Science, 12377Zhejiang University, Hangzhou, Zhejiang, China
| | - Boxiong Zhong
- College of Animal Science, 12377Zhejiang University, Hangzhou, Zhejiang, China
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14
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Zhou T, Zhou B, Zhao Y, Li Q, Song G, Zhu Z, Long Y, Cui Z. Development of a Mucus Gland Bioreactor in Loach Paramisgurnus dabryanus. Int J Mol Sci 2021; 22:ijms22020687. [PMID: 33445609 PMCID: PMC7827776 DOI: 10.3390/ijms22020687] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 01/03/2021] [Accepted: 01/07/2021] [Indexed: 12/15/2022] Open
Abstract
Most currently available bioreactors have some defects in the expression, activity, or purification of target protein and peptide molecules, whereas the mucus gland of fish can overcome these defects to become a novel bioreactor for the biopharmaceutical industry. In this study, we have evaluated the practicability of developing a mucus gland bioreactor in loach (Paramisgurnus dabryanus). A transgenic construct pT2-krt8-IFN1 was obtained by subcloning the promoter of zebrafish keratin 8 gene and the type I interferon (IFN1) cDNA of grass carp into the SB transposon. The IFN1 expressed in CIK cells exhibited an antiviral activity against the replication of GCRV873 and activated two genes downstream of JAK-STAT signaling pathway. A transgenic loach line was then generated by microinjection of the pT2-krt8-IFN1 plasmids and in vitro synthesized capped SB11 mRNA. Southern blots indicated that a single copy of IFN1 gene was stably integrated into the genome of transgenic loach. The expression of grass carp IFN1 in transgenic loaches was detected with RT-PCR and Western blots. About 0.0825 µg of grass carp IFN1 was detected in 20 µL mucus from transgenic loaches. At a viral titer of 1 × 103 PFU/mL, plaque numbers on plates containing mucus from transgenic loaches reduced by 18% in comparison with those of the control, indicating that mucus of IFN1-transgenic loaches exhibited an antiviral activity. Thus, we have successfully created a mucus gland bioreactor that has great potential for the production of various proteins and peptides.
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Affiliation(s)
- Tong Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; (T.Z.); (B.Z.); (Y.Z.); (Q.L.); (G.S.); (Z.Z.)
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Bolan Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; (T.Z.); (B.Z.); (Y.Z.); (Q.L.); (G.S.); (Z.Z.)
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yasong Zhao
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; (T.Z.); (B.Z.); (Y.Z.); (Q.L.); (G.S.); (Z.Z.)
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qing Li
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; (T.Z.); (B.Z.); (Y.Z.); (Q.L.); (G.S.); (Z.Z.)
| | - Guili Song
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; (T.Z.); (B.Z.); (Y.Z.); (Q.L.); (G.S.); (Z.Z.)
| | - Zuoyan Zhu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; (T.Z.); (B.Z.); (Y.Z.); (Q.L.); (G.S.); (Z.Z.)
| | - Yong Long
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; (T.Z.); (B.Z.); (Y.Z.); (Q.L.); (G.S.); (Z.Z.)
- Correspondence: (Y.L.); (Z.C.); Tel.: +86-27-68780100 (Y.L.); +86-27-68780090 (Z.C.)
| | - Zongbin Cui
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; (T.Z.); (B.Z.); (Y.Z.); (Q.L.); (G.S.); (Z.Z.)
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China
- Correspondence: (Y.L.); (Z.C.); Tel.: +86-27-68780100 (Y.L.); +86-27-68780090 (Z.C.)
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15
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Transdermal peptide conjugated to human connective tissue growth factor with enhanced cell proliferation and hyaluronic acid synthesis activities produced by a silkworm silk gland bioreactor. Appl Microbiol Biotechnol 2020; 104:9979-9990. [DOI: 10.1007/s00253-020-10836-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 07/19/2020] [Accepted: 08/14/2020] [Indexed: 12/12/2022]
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16
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Leem JW, Fraser MJ, Kim YL. Transgenic and Diet-Enhanced Silk Production for Reinforced Biomaterials: A Metamaterial Perspective. Annu Rev Biomed Eng 2020; 22:79-102. [PMID: 32160010 DOI: 10.1146/annurev-bioeng-082719-032747] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Silk fibers, which are protein-based biopolymers produced by spiders and silkworms, are fascinating biomaterials that have been extensively studied for numerous biomedical applications. Silk fibers often have remarkable physical and biological properties that typical synthetic materials do not exhibit. These attributes have prompted a wide variety of silk research, including genetic engineering, biotechnological synthesis, and bioinspired fiber spinning, to produce silk proteins on a large scale and to further enhance their properties. In this review, we describe the basic properties of spider silk and silkworm silk and the important production methods for silk proteins. We discuss recent advances in reinforced silk using silkworm transgenesis and functional additive diets with a focus on biomedical applications. We also explain that reinforced silk has an analogy with metamaterials such that user-designed atypical responses can be engineered beyond what naturally occurring materials offer. These insights into reinforced silk can guide better engineering of superior synthetic biomaterials and lead to discoveries of unexplored biological and medical applications of silk.
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Affiliation(s)
- Jung Woo Leem
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana 47907, USA
| | - Malcolm J Fraser
- Department of Biological Sciences, University of Notre Dame, Notre Dame, Indiana 46556, USA.,Eck Institute for Global Health, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - Young L Kim
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana 47907, USA.,Purdue University Center for Cancer Research, Regenstrief Center for Healthcare Engineering, and Purdue Quantum Science and Engineering Institute, West Lafayette, Indiana 47907, USA;
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17
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Shen G, Liu H, Lin Y, Xing D, Zhang Y, Xia Q. Effects of Certain cis-Regulatory Elements on Stage-Specific vitellogenin Expression in the Bombyx mori (Lepidoptera: Bombycidae). JOURNAL OF INSECT SCIENCE (ONLINE) 2020; 20:5859241. [PMID: 32556319 PMCID: PMC7300837 DOI: 10.1093/jisesa/ieaa054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Indexed: 06/11/2023]
Abstract
Bombyx mori vitellogenin (BmVg) is highly upregulated during pupation, and the 20-hydroxyecdysone and amino acids may regulate stage-specific BmVg expression. However, previous studies showed that other factors may also affect stage-specific BmVg expression. Here, we characterized effective BmVg transcription factors by identifying the corresponding cis-regulatory elements (CREs). We prepared transgenic B. mori, in which DsRed was driven by various lengths of BmVg promoter. qRT-PCR analysis showed that DsRed expression driven by a 1.0-kb BmVg promoter (VgP1.0K) was consistent with endogenous BmVg. VgP1.0K specificity was closer to the endogenous BmVg promoter than that of VgP0.8K. These results suggest that CREs affecting stage-specific BmVg expression were localized to the 1.0-kb BmVg promoter. We investigated the effects of certain CREs that could influence the stage specificity of BmVg promoter on BmVg expression in transgenic B. mori. The relative DsRed expression was significantly reduced in transgenic female B. mori and the peak in DsRed expression was delayed after E-box CRE mutation. These results demonstrate that the E-box element enhanced BmVg expression and also affected stage-specific BmVg expression. Moreover, the relative DsRed expression was significantly increased in transgenic female of B. mori after 3×BD CRE mutation in BmVg promoter. However, the stage specificity of the mutated promoter was consistent with that of the endogenous BmVg promoter. The 3×BD element downregulated BmVg but had no effect on stage-specific BmVg expression. The present study promoted the process of elucidating the regulatory network for stage-specific BmVg expression and furnished a theoretical basis for the application of BmVg promoter.
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Affiliation(s)
- Guanwang Shen
- Biological Science Research Center of Southwest University, Chongqing, China
- Chongqing Key Laboratory of Sericulture Science, Chongqing, China
| | - Hongling Liu
- Biological Science Research Center of Southwest University, Chongqing, China
- Chongqing Key Laboratory of Sericulture Science, Chongqing, China
| | - Ying Lin
- Biological Science Research Center of Southwest University, Chongqing, China
- Chongqing Key Laboratory of Sericulture Science, Chongqing, China
| | - Dongxu Xing
- Sericulture and Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Yujing Zhang
- Biological Science Research Center of Southwest University, Chongqing, China
- Chongqing Key Laboratory of Sericulture Science, Chongqing, China
| | - Qingyou Xia
- Biological Science Research Center of Southwest University, Chongqing, China
- Chongqing Key Laboratory of Sericulture Science, Chongqing, China
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18
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Chouhan D, Mandal BB. Silk biomaterials in wound healing and skin regeneration therapeutics: From bench to bedside. Acta Biomater 2020; 103:24-51. [PMID: 31805409 DOI: 10.1016/j.actbio.2019.11.050] [Citation(s) in RCA: 154] [Impact Index Per Article: 38.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 11/25/2019] [Accepted: 11/26/2019] [Indexed: 02/08/2023]
Abstract
Silk biomaterials are known for biomedical and tissue engineering applications including drug delivery and implantable devices owing to their biocompatible and a wide range of ideal physico-chemical properties. Herein, we present a critical overview of the progress of silk-based matrices in skin regeneration therapeutics with an emphasis on recent innovations and scientific findings. Beginning with a brief description of numerous varieties of silks, the review summarizes our current understanding of the biological properties of silk that help in the wound healing process. Various silk varieties such as silkworm silk fibroin, silk sericin, native spider silk and recombinant silk materials have been explored for cutaneous wound healing applications from the past few decades. With an aim to harness the regenerative properties of silk, numerous strategies have been applied to develop functional bioactive wound dressings and viable bio-artificial skin grafts in recent times. The review examines multiple inherent properties of silk that aid in the critical events of the healing process such as cell migration, cell proliferation, angiogenesis, and re-epithelialization. A detailed insight into the progress of silk-based cellular skin grafts is also provided that discusses various co-culture strategies and development of bilayer and tri-layer human skin equivalent under in vitro conditions. In addition, functionalized silk matrices loaded with bioactive molecules and antibacterial compounds are discussed, which have shown great potential in treating hard-to-heal wounds. Finally, clinical studies performed using silk-based translational products are reviewed that validate their regenerative properties and future applications in this area. STATEMENT OF SIGNIFICANCE: The review article discusses the recent advances in silk-based technologies for wound healing applications, covering various types of silk biomaterials and their properties suitable for wound repair and regeneration. The article demonstrates the progress of silk-based matrices with an update on the patented technologies and clinical advancements over the years. The rationale behind this review is to highlight numerous properties of silk biomaterials that aid in all the critical events of the wound healing process towards skin regeneration. Functionalization strategies to fabricate silk dressings containing bioactive molecules and antimicrobial compounds for drug delivery to the wound bed are discussed. In addition, a separate section describes the approaches taken to generate living human skin equivalent that have recently contributed in the field of skin tissue engineering.
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19
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Wang F, Hou K, Chen W, Wang Y, Wang R, Tian C, Xu S, Ji Y, Yang Q, Zhao P, Yu L, Lu Z, Zhang H, Li F, Wang H, He B, Kaplan DL, Xia Q. Transgenic PDGF-BB/sericin hydrogel supports for cell proliferation and osteogenic differentiation. Biomater Sci 2020; 8:657-672. [DOI: 10.1039/c9bm01478k] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The present study demonstrates fabrication of PDGF-BB functionalized sericin hydrogel to explore biomaterials-related utility in bone tissue engineering.
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20
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Wang Y, Xu S, Wang R, Chen W, Hou K, Tian C, Ji Y, Yang Q, Yu L, Lu Z, Zhao P, Xia Q, Wang F. Genetic fabrication of functional silk mats with improved cell proliferation activity for medical applications. Biomater Sci 2019; 7:4536-4546. [PMID: 31536077 DOI: 10.1039/c9bm01285k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Functional silk mats with improved cell proliferation activity are promising medical materials to accelerate damaged wound healing and tissue repair. In this study, novel functional silk mats were fabricated from human fibroblast growth factor (FGF)-containing cocoons generated by expressing human acid FGF1 and basic FGF2 in silkworms. First, functional silk mats containing FGF1 and FGF2 proteins alone or in combination were fabricated by physically cutting genetically engineered cocoons. Compared to those of normal silk mats, the physical properties of these functional silk mats such as silk fibre diameter, internal secondary structure, and mechanical properties were significantly changed. The expressed FGF1 and FGF2 proteins in these silk mats were efficiently and gradually released over 15 days. Moreover, these silk mats significantly promoted NIH/3T3 cell proliferation and growth by activating the extracellular signal-regulated kinase (ERK) pathway, and the silk mat containing FGF1 and FGF2 proteins showed higher cell proliferation. Importantly, this silk mat caused no obvious cytotoxicity or cell inflammation. These results suggest that these functional silk mats have potential medical applications.
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Affiliation(s)
- Yuancheng Wang
- Biological Science Research Center, Southwest University, Chongqing 400715, People's Republic of China. and Chongqing Key Laboratory of Sericultural Science, Southwest University, Chongqing 400715, People's Republic of China
| | - Sheng Xu
- Biological Science Research Center, Southwest University, Chongqing 400715, People's Republic of China. and Chongqing Key Laboratory of Sericultural Science, Southwest University, Chongqing 400715, People's Republic of China
| | - Riyuan Wang
- Biological Science Research Center, Southwest University, Chongqing 400715, People's Republic of China. and Chongqing Key Laboratory of Sericultural Science, Southwest University, Chongqing 400715, People's Republic of China
| | - Wenjing Chen
- Biological Science Research Center, Southwest University, Chongqing 400715, People's Republic of China. and Chongqing Key Laboratory of Sericultural Science, Southwest University, Chongqing 400715, People's Republic of China
| | - Kai Hou
- Biological Science Research Center, Southwest University, Chongqing 400715, People's Republic of China. and Chongqing Key Laboratory of Sericultural Science, Southwest University, Chongqing 400715, People's Republic of China
| | - Chi Tian
- Biological Science Research Center, Southwest University, Chongqing 400715, People's Republic of China. and Chongqing Key Laboratory of Sericultural Science, Southwest University, Chongqing 400715, People's Republic of China
| | - Yanting Ji
- Biological Science Research Center, Southwest University, Chongqing 400715, People's Republic of China. and Chongqing Key Laboratory of Sericultural Science, Southwest University, Chongqing 400715, People's Republic of China
| | - Qianqian Yang
- Biological Science Research Center, Southwest University, Chongqing 400715, People's Republic of China. and Chongqing Key Laboratory of Sericultural Science, Southwest University, Chongqing 400715, People's Republic of China
| | - Ling Yu
- Institute for Clean Energy & Advanced Materials, Faculty of Materials & Energy, Southwest University, Chongqing, 400715, People's Republic of China
| | - Zhisong Lu
- Institute for Clean Energy & Advanced Materials, Faculty of Materials & Energy, Southwest University, Chongqing, 400715, People's Republic of China
| | - Ping Zhao
- Biological Science Research Center, Southwest University, Chongqing 400715, People's Republic of China. and Chongqing Key Laboratory of Sericultural Science, Southwest University, Chongqing 400715, People's Republic of China
| | - Qingyou Xia
- Biological Science Research Center, Southwest University, Chongqing 400715, People's Republic of China. and Chongqing Key Laboratory of Sericultural Science, Southwest University, Chongqing 400715, People's Republic of China and Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing 400715, People's Republic of China
| | - Feng Wang
- Biological Science Research Center, Southwest University, Chongqing 400715, People's Republic of China. and Chongqing Key Laboratory of Sericultural Science, Southwest University, Chongqing 400715, People's Republic of China and Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing 400715, People's Republic of China
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21
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A silkworm based silk gland bioreactor for high-efficiency production of recombinant human lactoferrin with antibacterial and anti-inflammatory activities. J Biol Eng 2019; 13:61. [PMID: 31312254 PMCID: PMC6612213 DOI: 10.1186/s13036-019-0186-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 06/11/2019] [Indexed: 02/06/2023] Open
Abstract
Background Silk glands are used by silkworms to spin silk fibers for making their cocoons. These have recently been regarded as bioreactor hosts for the cost-effective production of other valuable exogenous proteins and have drawn wide attention. Results In this study, we established a transgenic silkworm strain which synthesizes the recombinant human lactoferrin (rhLF) in the silk gland and spins them into the cocoon by our previously constructed silk gland based bioreactor system. The yield of the rhLF with the highest expression level was estimated to be 12.07 mg/g cocoon shell weight produced by the transgenic silkworm strain 34. Utilizing a simple purification protocol, 9.24 mg of the rhLF with recovery of 76.55% and purity of 95.45% on average could be purified from 1 g of the cocoons. The purified rhLF was detected with a secondary structure similar with the commercially purchased human lactoferrin. Eight types of N-glycans which dominated by the GlcNAc (4) Man (3) (61.15%) and the GlcNAc (3) Man (3) (17.98%) were identified at the three typical N-glycosylation sites of the rhLF. Biological activities assays showed the significant evidence that the purified rhLF could relief the lipopolysaccharide (LPS)-induced cell inflammation in RAW264.7 cells and exhibit potent antibacterial bioactivities against the Escherichia coli (E. coli) and Bacillus subtilis. Conclusions These results show that the middle silk gland of silkworm can be an efficient bioreactor for the mass production of rhLF and the potential application in anti-inflammation and antibacterial. Electronic supplementary material The online version of this article (10.1186/s13036-019-0186-z) contains supplementary material, which is available to authorized users.
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22
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Wang Y, Wang F, Xu S, Wang R, Chen W, Hou K, Tian C, Wang F, Yu L, Lu Z, Zhao P, Xia Q. Genetically engineered bi-functional silk material with improved cell proliferation and anti-inflammatory activity for medical application. Acta Biomater 2019; 86:148-157. [PMID: 30586645 DOI: 10.1016/j.actbio.2018.12.036] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 11/14/2018] [Accepted: 12/21/2018] [Indexed: 01/01/2023]
Abstract
Functional silk is a promising material for future medical applications. These include fabrication of diverse silk fiber and silk protein-regenerated biomaterials such as silk sutures, hydrogel, films, and 3D scaffolds for wound healing and tissue regeneration and reconstruction. Here, a novel bi-functional silk with improved cell proliferation and anti-inflammatory activities was created by co-expressing the human basic fibroblast growth factor (FGF2) and transforming growth factor-β1 (TGF_β1) genes in silkworm. First, both FGF2 and TGF_β1 genes were confirmed to be successfully expressed in silk thread. The characterization of silk properties by SEM, FTIR, and mechanical tests showed that this new silk (FT silk) had a similar diameter, inner molecular composition, and mechanical properties as those of normal silk. Additionally, expressed FGF2 and TGF_β1 proteins were continuously and slowly released from FT silk for one week. Most importantly, the FGF2 and TGF_β1 contained in FT silk not only promoted cell proliferation by activating the ERK pathway but also significantly reduced LPS-induced inflammation responses in macrophages by mediating the Smad pathway. Moreover, this FT silk had no apparent toxicity for cell growth and caused no cell inflammation. These properties suggest that it has a potential for medical applications. STATEMENT OF SIGNIFICANCE: Silk spun by domestic silkworm is a promising material for fabricating various silk protein regenerated biomaterials in medical area, since it owes good biocompatibility, biodegradability and low immunogenicity. Recently, fabricating various functional silk fibers and regenerated silk protein biomaterials which has ability of releasing functional protein factor is the hot point field. This study is a first time to create a novel bi-functional silk material with the improved cell proliferation and anti-inflammatory activity by genetic engineered technology. This novel silk has a great application potential as new and novel medical material, and this study also provides a new strategy to create various functional or multifunctional silk fiber materials in future.
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