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Poudel SB, Bhattarai G, Kwon TH, Lee JC. Biopotentials of Collagen Scaffold Impregnated with Plant-Cell-Derived Epidermal Growth Factor in Defective Bone Healing. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16093335. [PMID: 37176216 PMCID: PMC10179640 DOI: 10.3390/ma16093335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 04/20/2023] [Accepted: 04/21/2023] [Indexed: 05/15/2023]
Abstract
The combination of scaffolds with recombinant human epidermal growth factor (rhEGF) protein can enhance defective bone healing via synergistic activation to stimulate cellular growth, differentiation, and survival. We examined the biopotentials of an rhEGF-loaded absorbable collagen scaffold (ACS) using a mouse model of calvarial defects, in which the rhEGF was produced from a plant cell suspension culture system because of several systemic advantages. Here, we showed a successful and large-scale production of plant-cell-derived rhEGF protein (p-rhEGF) by introducing an expression vector that cloned with its cDNA under the control of rice α-amylase 3D promoter into rice calli (Oryza sativa L. cv. Dongjin). Implantation with p-rhEGF (5 μg)-loaded ACSs into critical-sized calvarial defects enhanced new bone formation and the expression of osteoblast-specific markers in the defected regions greater than implantation with ACSs alone did. The potency of p-rhEGF-induced bone healing was comparable with that of Escherichia coli-derived rhEGF protein. The exogenous addition of p-rhEGF increased the proliferation of human periodontal ligament cells and augmented the induction of interleukin 8, bone morphogenetic protein 2, and vascular endothelial growth factor in the cells. Collectively, this study demonstrates the successful and convenient production of p-rhEGF, as well as its potency to enhance ACS-mediated bone regeneration by activating cellular responses that are required for wound healing.
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Affiliation(s)
- Sher Bahadur Poudel
- Department of Molecular Pathobiology, New York University College of Dentistry, New York, NY 10010, USA
| | - Govinda Bhattarai
- Cluster for Craniofacial Development & Regeneration Research, Institute of Oral Biosciences, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Tae-Ho Kwon
- Natural Bio-Materials Inc., Iksan 54631, Republic of Korea
| | - Jeong-Chae Lee
- Cluster for Craniofacial Development & Regeneration Research, Institute of Oral Biosciences, Jeonbuk National University, Jeonju 54896, Republic of Korea
- Research Center of Bioactive Materials, Jeonbuk National University, Jeonju 54896, Republic of Korea
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Long-Term Potato Virus X (PVX)-Based Transient Expression of Recombinant GFP Protein in Nicotiana benthamiana Culture In Vitro. PLANTS 2021; 10:plants10102187. [PMID: 34685995 PMCID: PMC8537016 DOI: 10.3390/plants10102187] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 10/05/2021] [Accepted: 10/12/2021] [Indexed: 11/17/2022]
Abstract
Plant molecular farming has a great potential to produce valuable proteins. Transient expression technology provides high yields of recombinant proteins in greenhouse-grown plants, but every plant must be artificially agroinfiltrated, and open greenhouse systems are less controlled. Here, we propose to propagate agrobacteria-free plants with high-efficient long-term self-replicated transient gene expression in a well-controlled closed in vitro system. Nicotiana benthamiana plant tissue culture in vitro, with transient expression of recombinant GFP, was obtained through shoot induction from leaf explants infected by a PVX-based vector. The transient expression occurs in new tissues and regenerants due to the natural systemic distribution of viral RNA carrying the target gene. Gene silencing was delayed in plants grown in vitro, and GFP was detected in plants for five to six months. Agrobacteria-free, GFP-expressing plants can be micropropagated in vitro (avoiding an agroinfiltration step), "rejuvenated" through regeneration (maintaining culture for years), or transferred in soil. The mean GFP in the regenerants was 18% of the total soluble proteins (TSP) (0.52 mg/g of fresh leaf weight (FW). The highest value reached 47% TSP (2 mg/g FW). This study proposes a new method for recombinant protein production combining the advantages of transient expression technology and closed cultural systems.
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Poudel SB, Min CK, Lee JH, Shin YJ, Kwon TH, Jeon YM, Lee JC. Local supplementation with plant-derived recombinant human FGF2 protein enhances bone formation in critical-sized calvarial defects. J Bone Miner Metab 2019; 37:900-912. [PMID: 30843129 DOI: 10.1007/s00774-019-00993-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Accepted: 01/31/2019] [Indexed: 12/11/2022]
Abstract
Numerous studies have demonstrated the advantages of plant cell suspension culture systems in producing bioactive recombinant human growth factors. This study investigated the biological activity of recombinant basic human fibroblast growth factor (rhFGF2) protein produced by a plant culture system to enhance new bone formation in a bone defect mouse model. The human FGF2 cDNA gene was cloned into a plant expression vector driven by the rice α-amylase 3D promoter. The vector was introduced into rice calli (Oryza sativa L. cv. Dongjin), and the clone with the highest expression of rhFGF2 was selected. Maximum accumulation of rhFGF2 protein (approximately 28 mg/l) was reached at 13 day post-incubation. Male C57BL/6 mice underwent calvarial defect surgery and the defects were loaded with absorbable collagen sponge (ACS) only (ACS group) or ACS impregnated with 5 μg of plant-derived rhFGF2 (p-FGF2) protein or E. coli-derived rhFGF2 (e-FGF2) protein. Similar to the effects of e-FGF2, local delivery with p-FGF2 enhanced bone healing in the damaged region to higher levels than the ACS group. Exogenous addition of p-FGF2 or e-FGF2 exhibited similar effects on proliferation, mineralization, and osteogenic marker expression in MC3T3-E1 cells. Together, the current findings support the usefulness of this plant-based expression system for the production of biologically active rhFGF2.
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Affiliation(s)
- Sher Bahadur Poudel
- Institute of Oral Biosciences and School of Dentistry, Chonbuk National University, Jeonju, 54896, Republic of Korea
| | - Chang-Ki Min
- Institute of Oral Biosciences and School of Dentistry, Chonbuk National University, Jeonju, 54896, Republic of Korea
| | - Jeong-Hoon Lee
- Institute of Oral Biosciences and School of Dentistry, Chonbuk National University, Jeonju, 54896, Republic of Korea
| | - Yun-Ji Shin
- Natural Bio-Materials Inc., Iksan, 54631, Republic of Korea
| | - Tae-Ho Kwon
- Natural Bio-Materials Inc., Iksan, 54631, Republic of Korea
| | - Young-Mi Jeon
- Institute of Oral Biosciences and School of Dentistry, Chonbuk National University, Jeonju, 54896, Republic of Korea.
- School of Dentistry, Research Institute of Clinical Medicine, Chonbuk National University, Jeonju, 54896, Republic of Korea.
| | - Jeong-Chae Lee
- Institute of Oral Biosciences and School of Dentistry, Chonbuk National University, Jeonju, 54896, Republic of Korea.
- Research Center of Bioactive Materials, Chonbuk National University, Jeonju, 54896, Republic of Korea.
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Mad’ Atari MFB, Folta KM. Transformation improvement with the Standardized Pressure Agrobacterium Infiltration Device (SPAID). BMC Res Notes 2019; 12:144. [PMID: 30876440 PMCID: PMC6419847 DOI: 10.1186/s13104-019-4117-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 02/06/2019] [Indexed: 11/25/2022] Open
Abstract
OBJECTIVE The treatment of plant tissue with Agrobacterium tumefaciens is often a critical first step to both stable and transient plant transformation. In both applications bacterial suspensions are oftentimes physically introduced into plant tissues using hand-driven pressure from a needleless syringe. While effective, this approach has several drawbacks that limit reproducibility. Pressure must be provided with the syringe perfectly perpendicular to the tissue surface. The researcher must also attempt to provide even and consistent pressure, both within and between experimental replicates. These factors mean that the procedures do not always translate well between research groups or biological replicates. RESULTS We have devised a method to introduce Agrobacterium suspensions into plant leaves with greater reproducibility. Using a decommissioned dissecting microscope as an armature, a syringe body with the bacterial suspension is mounted to the nosepiece. Gentle, even pressure is applied by rotating the focus knob. The treatment force is measured using a basic kitchen scale. The development of the Standardized Pressure Agrobacterium Infiltration Device (SPAID) provides a means to deliver consistent amounts of bacterial suspensions into plant tissues with the goal of increasing reproducibility between replicates and laboratories.
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Affiliation(s)
- Mohamad Fadhli bin Mad’ Atari
- Horticultural Sciences Department, University of Florida, 1301 Fifield Hall, PO Box 110690, Gainesville, FL 32611 USA
- Present Address: School of Biological Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia
| | - Kevin M. Folta
- Horticultural Sciences Department, University of Florida, 1301 Fifield Hall, PO Box 110690, Gainesville, FL 32611 USA
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PVDF nanofibers obtained by solution blow spinning with use of a commercial airbrush. JOURNAL OF POLYMER RESEARCH 2019. [DOI: 10.1007/s10965-019-1731-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Poudel SB, Bhattarai G, Kook SH, Shin YJ, Kwon TH, Lee SY, Lee JC. Recombinant human IGF-1 produced by transgenic plant cell suspension culture enhances new bone formation in calvarial defects. Growth Horm IGF Res 2017; 36:1-10. [PMID: 28787635 DOI: 10.1016/j.ghir.2017.07.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Revised: 07/20/2017] [Accepted: 07/28/2017] [Indexed: 12/16/2022]
Abstract
Transgenic plant cell suspension culture systems have been utilized extensively as convenient and efficient expression systems for the production of recombinant human growth factors. We produced insulin-like growth factor-1 using a plant suspension culture system (p-IGF-1) and explored its effect on new bone formation in calvarial defects. We also compared the bone regenerating potential of p-IGF-1 with commercial IGF-1 derived from Escherichia coli (e-IGF-1). Male C57BL/6 mice underwent calvarial defect surgery, and the defects were loaded with absorbable collagen sponge (ACS) only (ACS group) or ACS impregnated with 13μg of p-IGF-1 (p-IGF-1 group) or e-IGF-1 (e-IGF-1 group). The sham group did not receive any treatment with ACS or IGFs after surgery. Live μCT and histological analyses showed critical-sized bone defects in the sham group, whereas greater bone formation was observed in the p-IGF-1 and e-IGF-1 groups than the ACS group both 5 and 10weeks after surgery. Bone mineral density, bone volume, and bone surface values were also higher in the IGF groups than in the ACS group. Local delivery of p-IGF-1 or e-IGF-1 more greatly enhanced the expression of osteoblast-specific markers, but inhibited osteoclast formation, in newly formed bone compared with ACS control group. Specifically, p-IGF-1 treatment induced higher expression of alkaline phosphatase, osteocalcin, and osteopontin in the defect site than did e-IGF-1. Furthermore, treatment with p-IGF-1, but not e-IGF-1, increased mineralization of MC3T3-E1 cells, with the attendant upregulation of osteogenic marker genes. Collectively, our findings suggest the potential of p-IGF-1 in promoting the processes required for bone regeneration.
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Affiliation(s)
- Sher Bahadur Poudel
- Cluster for Craniofacial Development & Regeneration Research, Institute of Oral Biosciences, Chonbuk National University, Jeonju 54896, South Korea
| | - Govinda Bhattarai
- Cluster for Craniofacial Development & Regeneration Research, Institute of Oral Biosciences, Chonbuk National University, Jeonju 54896, South Korea
| | - Sung-Ho Kook
- Cluster for Craniofacial Development & Regeneration Research, Institute of Oral Biosciences, Chonbuk National University, Jeonju 54896, South Korea; Department of Bioactive Material Sciences, Research Center of Bioactive Materials, Chonbuk National University, Jeonju 54896, South Korea
| | - Yun-Ji Shin
- Natural Bio-Materials Inc., Iksan 54631, South Korea
| | - Tae-Ho Kwon
- Natural Bio-Materials Inc., Iksan 54631, South Korea
| | - Seung-Youp Lee
- Research Institute of Clinical Medicine of Chonbuk National University, Biomedical Research Institute of Chonbuk National University Hospital, Jeonju 54896, South Korea.
| | - Jeong-Chae Lee
- Cluster for Craniofacial Development & Regeneration Research, Institute of Oral Biosciences, Chonbuk National University, Jeonju 54896, South Korea; Department of Bioactive Material Sciences, Research Center of Bioactive Materials, Chonbuk National University, Jeonju 54896, South Korea.
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