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Zhao Z, Ma S, Wu C, Li X, Ma X, Hu H, Wu J, Wang Y, Liu Z. Chimeric Peptides Quickly Modify the Surface of Personalized 3D Printing Titanium Implants to Promote Osseointegration. ACS APPLIED MATERIALS & INTERFACES 2021; 13:33981-33994. [PMID: 34260195 DOI: 10.1021/acsami.1c11207] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Titanium (Ti) and titanium alloys have been widely used in the field of biomedicine. However, the unmatched biomechanics and poor bioactivities of conventional Ti implants usually lead to insufficient osseointegration. To tackle these challenges, it is critical to develop a novel Ti implant that meets the bioadaptive requirements for load-bearing critical bone defects. Notably, three-dimensional (3D)-printed Ti implants mimic the microstructure and mechanical properties of natural bones. Additionally, eco-friendly techniques based on inorganic-binding peptides have been applied to modify Ti surfaces. Herein, in our study, Ti surfaces were modified to reinforce osseointegration using chimeric peptides constructed by connecting W9, RP1P, and minTBP-1 directly or via (GP)4, respectively. PR1P is derived from the extracellular VEGF-binding domain of prominin-1, which increases the expression of VEGF and promotes the binding of VEGF to endothelial cells, thereby accelerating angiogenesis. W9 induces osteoblast differentiation in bone marrow mesenchymal stem cells and human mesenchymal stem cells to promote bone formation. Overall, chimeric peptides promote osseointegration by promoting angiogenesis and osteogenesis. Additionally, chimeric peptides with P3&4 were more effective than those with P1&2 in improving osseointegration, which might be ascribed to the capacity of P3&4 to provide a greater range for chimeric peptides to express their activity. This work successfully used chimeric peptides to modify 3D-Ti implant surfaces to improve osseointegration on the implant-bone surface.
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Affiliation(s)
- Zhezhe Zhao
- School and Hospital of Stomatology, Tianjin Medical University, Tianjin 300070, People's Republic of China
| | - Shiqing Ma
- School and Hospital of Stomatology, Tianjin Medical University, Tianjin 300070, People's Republic of China
| | - Chenxuan Wu
- School and Hospital of Stomatology, Tianjin Medical University, Tianjin 300070, People's Republic of China
| | - Xuewen Li
- School and Hospital of Stomatology, Tianjin Medical University, Tianjin 300070, People's Republic of China
| | - Xinying Ma
- School and Hospital of Stomatology, Tianjin Medical University, Tianjin 300070, People's Republic of China
| | - Han Hu
- School and Hospital of Stomatology, Tianjin Medical University, Tianjin 300070, People's Republic of China
| | - Jie Wu
- School and Hospital of Stomatology, Tianjin Medical University, Tianjin 300070, People's Republic of China
| | - Yonglan Wang
- School and Hospital of Stomatology, Tianjin Medical University, Tianjin 300070, People's Republic of China
| | - Zihao Liu
- School and Hospital of Stomatology, Tianjin Medical University, Tianjin 300070, People's Republic of China
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Yue Z, Zhang L, Li C, Chen Y, Tai Y, Shen Y, Sun Z. Advances and potential of gene therapy for type 2 diabetes mellitus. BIOTECHNOL BIOTEC EQ 2019. [DOI: 10.1080/13102818.2019.1643783] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Affiliation(s)
- Zonghao Yue
- Department of Bioengineering, College of Life Sciences and Agronomy, Zhoukou Normal University, Zhoukou, PR China
- Department of Food Science, Institute of Food and Drug Inspection, Zhoukou Normal University, Zhoukou, PR China
| | - Lijuan Zhang
- Department of Bioengineering, College of Life Sciences and Agronomy, Zhoukou Normal University, Zhoukou, PR China
| | - Chunyan Li
- Department of Bioengineering, College of Life Sciences and Agronomy, Zhoukou Normal University, Zhoukou, PR China
| | - Yanjuan Chen
- Department of Bioengineering, College of Life Sciences and Agronomy, Zhoukou Normal University, Zhoukou, PR China
| | - Yaping Tai
- Department of Bioengineering, College of Life Sciences and Agronomy, Zhoukou Normal University, Zhoukou, PR China
| | - Yihao Shen
- Department of Bioengineering, College of Life Sciences and Agronomy, Zhoukou Normal University, Zhoukou, PR China
| | - Zhongke Sun
- Department of Bioengineering, College of Life Sciences and Agronomy, Zhoukou Normal University, Zhoukou, PR China
- Department of Food Science, Institute of Food and Drug Inspection, Zhoukou Normal University, Zhoukou, PR China
- Department of Molecular Engineering, College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, PR China
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Sun X, Tang X, Hu R, Luo M, Hill P, Fang B, Xu C. Biosynthetic bifunctional enzyme complex with high-efficiency luciferin-recycling to enhance the bioluminescence imaging. Int J Biol Macromol 2019; 130:705-714. [PMID: 30849466 DOI: 10.1016/j.ijbiomac.2019.03.036] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 02/26/2019] [Accepted: 03/04/2019] [Indexed: 10/27/2022]
Abstract
Firefly luciferase is a prominent reporter on molecular imaging with the advantage of longer wavelength on light emission and the ATP linear correlation, which makes it useful in most of current bioluminescence imaging model. However, the utility of this biomaterial was limited by the signal intensity and stability which are respectively affected by enzyme activity and substrate consumption. This study demonstrated a series of novel synthetic bifunctional enzyme complex of Firefly luciferase (Fluc) and Luciferin-regenerating enzyme (LRE). A peptide linker library was constructed for the fusion strategy on biosynthesis. The findings of both experimental data and structural simulation demonstrated that the intervention of fused LRE remarkably improve the stability of in vitro bioluminescence signal through luciferin recycling; and revealed the competitive relationship of Fluc and LRE on luciferin binding: Fluc performed higher activity with one copy number of rigid linker (EAAAK) at the C terminal while LRE acted more efficiently with two copy numbers of flexible linker (GGGGS) at the N terminal. With the advantage of signal intensity and stability, this fused bifunctional enzyme complex may expand the application of firefly luciferase to in vitro bioluminescence imaging.
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Affiliation(s)
- Xiaohui Sun
- Engineering Research Center of Marine Biological Resources Comprehensive Utilization, Third Institute of Oceanography, Ministry of Natural Resources, 178 Daxue Road, Xiamen 361005, PR China
| | - Xu Tang
- Engineering Research Center of Marine Biological Resources Comprehensive Utilization, Third Institute of Oceanography, Ministry of Natural Resources, 178 Daxue Road, Xiamen 361005, PR China
| | - Rui Hu
- Engineering Research Center of Marine Biological Resources Comprehensive Utilization, Third Institute of Oceanography, Ministry of Natural Resources, 178 Daxue Road, Xiamen 361005, PR China
| | - Man Luo
- Engineering Research Center of Marine Biological Resources Comprehensive Utilization, Third Institute of Oceanography, Ministry of Natural Resources, 178 Daxue Road, Xiamen 361005, PR China
| | - Philip Hill
- University of Nottingham, School of Biosciences, Sutton Bonington Campus, Sutton Bonington, Loughbrough LE12 5RD, UK
| | - Baishan Fang
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, PR China
| | - Chang'an Xu
- Engineering Research Center of Marine Biological Resources Comprehensive Utilization, Third Institute of Oceanography, Ministry of Natural Resources, 178 Daxue Road, Xiamen 361005, PR China.
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An efficient thermostabilization strategy based on self-assembling amphipathic peptides for fusion tags. Enzyme Microb Technol 2019; 121:68-77. [DOI: 10.1016/j.enzmictec.2018.11.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 11/13/2018] [Accepted: 11/16/2018] [Indexed: 11/20/2022]
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Improved scFv Anti-LOX-1 Binding Activity by Fusion with LOX-1-Binding Peptides. BIOMED RESEARCH INTERNATIONAL 2017; 2017:8946935. [PMID: 29094051 PMCID: PMC5637825 DOI: 10.1155/2017/8946935] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 08/20/2017] [Indexed: 12/28/2022]
Abstract
The oxidized low-density lipoprotein receptor-1 (LOX-1) targeted single-chain variable fragment (scFvs) is a promising molecule for the targeted delivery of imaging and therapeutic molecules of atherosclerotic diseases; however, its applications are limited by the inherent low antigen affinity. In this study, the three-dimensional (3D) model of the anti-LOX-1 scFv was constructed and its docking with the LOX-1 protein was developed. To improve the LOX-1-binding activity, the anti-LOX-1 scFv was designed to fuse with one of three LOX-1-binding heptapeptides, LTPATAI, FQTPPQL, and LSIPPKA, at its N-terminus and C-terminus and in the linker region, which have different LOX-1-binding interfaces with the anti-LOX-1 scFv analyzed by an array of computational approaches. These scFv/peptide fusions were constructed, successfully expressed in Brevibacillus choshinensis hosts, and purified by a two-step column purification process. The antigen binding activity, structural characteristics, thermal stability, and stability in serum of these fusion proteins were examined. Results showed that the scFv with N-terminal fusing peptides proteins demonstrated increased LOX-1-binding activity without decrease in stability. These findings will help increase the application efficacy of LOX-1 targeting scFv in LOX-1-based therapy.
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Modified human glucagon-like peptide-1 (GLP-1) produced in E. coli has a long-acting therapeutic effect in type 2 diabetic mice. PLoS One 2017; 12:e0181939. [PMID: 28750064 PMCID: PMC5531477 DOI: 10.1371/journal.pone.0181939] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 07/10/2017] [Indexed: 01/17/2023] Open
Abstract
Glucagon-like peptide 1 (GLP-1) is a very potent insulinotropic hormone secreted into the blood stream after eating. Thus, it has potential to be used in therapeutic treatment of diabetes. The half-life of GLP-1, however, is very short due to its rapid cleavage by dipeptidyl peptidase IV (DPP-IV). This presents a great challenge if it is to be used as a therapeutic drug. GLP-1, like many other small peptides, is commonly produced through chemical synthesis, but is limited by cost and product quantity. In order to overcome these problems, a sequence encoding a six codon-optimized tandem repeats of modified GLP-1 was constructed and expressed in the E. coli to produce a protease-resistant protein, 6×mGLP-1. The purified recombinant 6×mGLP-1, with a yield of approximately 20 mg/L, could be digested with trypsin to obtain single peptides. The single mGLP-1 peptides significantly stimulated the proliferation of a mouse pancreatic β cell line, MIN6. The recombinant peptide also greatly improved the oral glucose tolerance test of mice, exerted a positive glucoregulatory effect, and most notably had a glucose lowering effect for as long as 16.7 hours in mice altered to create a type 2 diabetic condition and exerted a positive glucoregulatory effect in db/db mice. These results indicate that recombinant 6×mGLP-1 has great potential to be used as an effective and cost-efficient drug for the treatment of type 2 diabetes.
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Xu F, Wang KY, Wang N, Li G, Liu D. Bioactivity of a modified human Glucagon-like peptide-1. PLoS One 2017; 12:e0171601. [PMID: 28152036 PMCID: PMC5289641 DOI: 10.1371/journal.pone.0171601] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Accepted: 01/22/2017] [Indexed: 12/18/2022] Open
Abstract
Diabetes has become the third largest cause of death in humans worldwide. Therefore, effective treatment for this disease remains a critical issue. Glucagon-like peptide-1 (GLP-1) plays an important role in glucose homeostasis, and therefore represents a promising candidate to use for the treatment of diabetes. Native GLP-1, however, is quickly degraded in in the circulatory system; which limits its clinical application. In the present study, a chemically-synthesized, modified analogue of human GLP-1 (mGLP-1) was designed. Our analyses indicated that, relative to native GLP-1, mGLP-1 is more resistant to trypsin and pancreatin degradation. mGLP-1 promotes mouse pancreatic β-cell proliferation by up-regulating the expression level of cyclin E, CDK2, Bcl-2 and down-regulating Bax, p21, and stimulates insulin secretion. An oral glucose tolerance test indicated that mGLP-1 significantly improved glucose tolerance in mice. Intraperitoneal injections of mGLP-1 into streptozotocin (STZ)-induced type 2 diabetic mice significantly reduced blood sugar levels and stimulated insulin secretion. Oral gavages of mGLP-1 in diabetic mice did not result in significant hypoglycemic activity.
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Affiliation(s)
- Fangfang Xu
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Kevin Yueju Wang
- Department of Natural Sciences, Northeastern State University, Broken Arrow, Oklahoma, United States of America
| | - Nan Wang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Gangqiang Li
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Dehu Liu
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
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Effect of Linker Length and Flexibility on the Clostridium thermocellum Esterase Displayed on Bacillus subtilis Spores. Appl Biochem Biotechnol 2016; 182:168-180. [DOI: 10.1007/s12010-016-2318-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Accepted: 10/31/2016] [Indexed: 01/23/2023]
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Kong Y, Tong Y, Chen C, Gao M, Gao X, Yao W. Alleviation of high-fat diet-induced atherosclerosis and glucose intolerance by a novel GLP-1 fusion protein in ApoE(-/-) mice. Endocrine 2016; 53:71-80. [PMID: 26832342 DOI: 10.1007/s12020-015-0831-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Accepted: 12/09/2015] [Indexed: 12/11/2022]
Abstract
We have previously constructed an engineered anti-diabetic fusion protein using glucagon-like peptide-1 and the globular domain of adiponectin. Herein, we evaluated the therapeutic effects of this fusion protein (GAD) on high-fat diet (HFD)-fed ApoE(-/-) mice. The lipid-lowering effect of GAD was determined in C57BL/6 mice using a lipid tolerance test. The effects of GAD on HFD-induced glucose intolerance, atherosclerosis, and hepatic steatosis were evaluated in HFD-fed ApoE(-/-) mice using glucose tolerance test, histological examinations and real-time quantitative PCR. The anti-inflammation activity of GAD was assessed in vitro on macrophages. GAD improved lipid metabolism in C57BL/6 mice. GAD treatment alleviated glucose intolerance, reduced blood lipid level, and attenuated atherosclerotic lesion in HFD-fed ApoE(-/-) mice, which was associated with a repressed macrophage infiltration in the vessel wall. GAD treatment also blocked hepatic macrophage infiltration and prevented hepatic inflammation. GAD suppressed lipopolysaccharide-triggered inflammation responses on macrophages, which can be abolished by H89, an inhibitor of protein kinase A. These findings demonstrate that GAD is able to generate a variety of metabolic benefits in HFD-fed ApoE(-/-) mice and indicate that this engineered fusion protein is a promising lead structure for anti-atherosclerosis drug discovery.
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Affiliation(s)
- Yuelin Kong
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Yue Tong
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Chen Chen
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Mingming Gao
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, Athens, GA, USA
| | - Xiangdong Gao
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, People's Republic of China.
| | - Wenbing Yao
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, People's Republic of China.
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