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Jo SB, Park CY, Kang HK, Jung SY, Min BM. The laminin-211-derived PPFEGCIWN motif accelerates wound reepithelialization and increases phospho-FAK-Tyr397 and Rac1-GTP levels in a rat excisional wound splinting model. J Tissue Eng Regen Med 2020; 14:1100-1112. [PMID: 32592615 DOI: 10.1002/term.3084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 05/31/2020] [Accepted: 06/03/2020] [Indexed: 11/11/2022]
Abstract
We previously reported that the PPFEGCIWN motif (Ln2-LG3-P2-DN3), residues 2678-2686 of the human laminin α2 chain, promotes cell attachment of normal human epidermal keratinocytes (NHEKs) and dermal fibroblasts (NHDFs); however, its in vivo effects on cutaneous wound healing have not yet been examined. In this study, we sought to determine whether Ln2-LG3-P2-DN3 could promote full-thickness cutaneous wound healing by accelerating wound reepithelialization and wound closure in vivo. Ln2-LG3-P2-DN3 had significantly higher cell attachment and spreading activities than vehicle or scrambled peptide control in both NHEKs and NHDFs in vitro. The wound area was significantly smaller in rats treated with Ln2-LG3-P2-DN3 than in those treated with vehicle or scrambled peptide in the early phase of wound healing. Furthermore, Ln2-LG3-P2-DN3 significantly accelerated wound reepithelialization relative to vehicle or scrambled peptide and promoted FAK-Tyr397 phosphorylation and Rac1 activation. Collectively, our findings suggest that the PPFEGCIWN motif has potential as a therapeutic agent for cutaneous regeneration via the acceleration of wound reepithelization and wound closure.
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Affiliation(s)
- Seung Bin Jo
- Department of Oral Biochemistry and Program in Cancer and Developmental Biology, Dental Research Institute, Seoul National University School of Dentistry, Seoul, South Korea
| | - Cho Yeon Park
- Department of Oral Biochemistry and Program in Cancer and Developmental Biology, Dental Research Institute, Seoul National University School of Dentistry, Seoul, South Korea
| | - Hyun Ki Kang
- Department of Oral Biochemistry and Program in Cancer and Developmental Biology, Dental Research Institute, Seoul National University School of Dentistry, Seoul, South Korea
| | - Sung Youn Jung
- Department of Oral Biochemistry and Program in Cancer and Developmental Biology, Dental Research Institute, Seoul National University School of Dentistry, Seoul, South Korea
| | - Byung-Moo Min
- Department of Oral Biochemistry and Program in Cancer and Developmental Biology, Dental Research Institute, Seoul National University School of Dentistry, Seoul, South Korea
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Choi J, Kim S, Jo SB, Kang HK, Jung SY, Kim SW, Min B, Yeo IL. A laminin‐211‐derived bioactive peptide promotes the osseointegration of a sandblasted, large‐grit, acid‐etched titanium implant. J Biomed Mater Res A 2020; 108:1214-1222. [DOI: 10.1002/jbm.a.36895] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 01/21/2020] [Accepted: 02/04/2020] [Indexed: 12/14/2022]
Affiliation(s)
- Jung‐Yoo Choi
- Dental Research InstituteSeoul National University School of Dentistry Seoul Korea
| | - Sungjin Kim
- Department of ProsthodonticsSeoul National University School of Dentistry Seoul Korea
| | - Seung Bin Jo
- Department of Oral Biochemistry and Program in Cancer and Developmental BiologySeoul National University School of Dentistry Seoul Korea
| | - Hyun Ki Kang
- Department of Oral Biochemistry and Program in Cancer and Developmental BiologySeoul National University School of Dentistry Seoul Korea
| | - Sung Youn Jung
- Department of Oral Biochemistry and Program in Cancer and Developmental BiologySeoul National University School of Dentistry Seoul Korea
| | - Sang Wha Kim
- Department of Plastic Surgery, College of MedicineSeoul National University Seoul Korea
| | - Byung‐Moo Min
- Dental Research InstituteSeoul National University School of Dentistry Seoul Korea
- Department of Oral Biochemistry and Program in Cancer and Developmental BiologySeoul National University School of Dentistry Seoul Korea
| | - In‐Sung Luke Yeo
- Dental Research InstituteSeoul National University School of Dentistry Seoul Korea
- Department of ProsthodonticsSeoul National University School of Dentistry Seoul Korea
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Previtali SC, Zambon AA. LAMA2 Neuropathies: Human Findings and Pathomechanisms From Mouse Models. Front Mol Neurosci 2020; 13:60. [PMID: 32390798 PMCID: PMC7190814 DOI: 10.3389/fnmol.2020.00060] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 03/26/2020] [Indexed: 12/18/2022] Open
Abstract
Merosin deficient Congenital Muscular Dystrophy (MDC1A), or LAMA2-related muscular dystrophy (LAMA2-RD), is a recessive disorder resulting from mutations in the LAMA2 gene, encoding for the alpha-2 chain of laminin-211. The disease is predominantly characterized by progressive muscular dystrophy affecting patient motor function and reducing life expectancy. However, LAMA2-RD also comprises a developmentally-associated dysmyelinating neuropathy that contributes to the disease progression, in addition to brain abnormalities; the latter often underappreciated. In this brief review, we present data supporting the impact of peripheral neuropathy in the LAMA2-RD phenotype, including both mouse models and human studies. We discuss the molecular mechanisms underlying nerve abnormalities and involved in the laminin-211 pathway, which affects axon sorting, ensheathing and myelination. We conclude with some final considerations of consequences on nerve regeneration and potential therapeutic strategies.
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Affiliation(s)
- Stefano Carlo Previtali
- Neuromuscular Repair Unit, Institute of Experimental Neurology (InSpe), Division of Neuroscience, IRCCS Ospedale San Raffaele, Milan, Italy.,Department of Neurology, IRCCS Ospedale San Raffaele, Milan, Italy
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López-Cebral R, Silva-Correia J, Reis RL, Silva TH, Oliveira JM. Peripheral Nerve Injury: Current Challenges, Conventional Treatment Approaches, and New Trends in Biomaterials-Based Regenerative Strategies. ACS Biomater Sci Eng 2017; 3:3098-3122. [DOI: 10.1021/acsbiomaterials.7b00655] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- R. López-Cebral
- 3Bs Research Group, Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal
- ICVS/3Bs, PT Government Associate Laboratory, University of Minho, Braga/Guimarães, Portugal
| | - J. Silva-Correia
- 3Bs Research Group, Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal
- ICVS/3Bs, PT Government Associate Laboratory, University of Minho, Braga/Guimarães, Portugal
| | - R. L. Reis
- 3Bs Research Group, Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal
- ICVS/3Bs, PT Government Associate Laboratory, University of Minho, Braga/Guimarães, Portugal
| | - T. H. Silva
- 3Bs Research Group, Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal
- ICVS/3Bs, PT Government Associate Laboratory, University of Minho, Braga/Guimarães, Portugal
| | - J. M. Oliveira
- 3Bs Research Group, Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal
- ICVS/3Bs, PT Government Associate Laboratory, University of Minho, Braga/Guimarães, Portugal
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Li BB, Yin YX, Yan QJ, Wang XY, Li SP. A novel bioactive nerve conduit for the repair of peripheral nerve injury. Neural Regen Res 2016; 11:150-5. [PMID: 26981105 PMCID: PMC4774210 DOI: 10.4103/1673-5374.175062] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The use of a nerve conduit provides an opportunity to regulate cytokines, growth factors and neurotrophins in peripheral nerve regeneration and avoid autograft defects. We constructed a poly-D-L-lactide (PDLLA)-based nerve conduit that was modified using poly{(lactic acid)-co-[(glycolic acid)-alt-(L-lysine)]} and β-tricalcium phosphate. The effectiveness of this bioactive PDLLA-based nerve conduit was compared to that of PDLLA-only conduit in the nerve regeneration following a 10-mm sciatic nerve injury in rats. We observed the nerve morphology in the early period of regeneration, 35 days post injury, using hematoxylin-eosin and methylene blue staining. Compared with the PDLLA conduit, the nerve fibers in the PDLLA-based bioactive nerve conduit were thicker and more regular in size. Muscle fibers in the soleus muscle had greater diameters in the PDLLA bioactive group than in the PDLLA only group. The PDLLA-based bioactive nerve conduit is a promising strategy for repair after sciatic nerve injury.
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Affiliation(s)
- Bin-Bin Li
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei Province, China; Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan University of Technology, Wuhan, Hubei Province, China
| | - Yi-Xia Yin
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei Province, China; Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan University of Technology, Wuhan, Hubei Province, China
| | - Qiong-Jiao Yan
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei Province, China; Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan University of Technology, Wuhan, Hubei Province, China
| | - Xin-Yu Wang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei Province, China; Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan University of Technology, Wuhan, Hubei Province, China
| | - Shi-Pu Li
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei Province, China; Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan University of Technology, Wuhan, Hubei Province, China
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Kang HK, Kim OB, Min SK, Jung SY, Jang DH, Kwon TK, Min BM, Yeo IS. The effect of the DLTIDDSYWYRI motif of the human laminin α2 chain on implant osseointegration. Biomaterials 2013; 34:4027-4037. [PMID: 23465831 DOI: 10.1016/j.biomaterials.2013.02.023] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2012] [Accepted: 02/11/2013] [Indexed: 10/27/2022]
Abstract
Considerable effort has been directed towards replacing lost teeth using tissue-engineering methods such as titanium implants. A number of studies have tried to modify bioinert titanium surfaces by coating them with functionally bioactive molecules for faster and stronger osseointegration than pure titanium surfaces. Recently, peptides have been recognized as valuable scientific tools in the field of tissue-engineering. The DLTIDDSYWYRI motif of the human laminin-2 α2 chain has been previously reported to promote the attachment of various cell types; however, the in vivo effects of the DLTIDDSYWYRI motif on new bone formation have not yet been studied. To examine whether a laminin-2-derived peptide can promote osseointegration by accelerating new bone formation in vivo, we applied titanium implants coated with the DLTIDDSYWYRI motif in a rabbit tibia model. The application of the DLTIDDSYWYRI motif-treated implant to tibia wounds enhanced collagen deposition and alkaline phosphatase expression. It significantly promoted implant osseointegration compared with treatment with scrambled peptide-treated implants by increasing the bone-to-implant contact ratio and bone area. These findings support the hypothesis that the DLTIDDSYWYRI motif acts as an effective osseointegration accelerator by enhancing new bone formation.
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Affiliation(s)
- Hyun Ki Kang
- Department of Oral Biochemistry and Program in Cancer and Developmental Biology, Dental Research Institute, Seoul National University School of Dentistry, 28 Yeonkun-Dong, Chongno-Ku, Seoul 110-749, Republic of Korea.
| | - O Bok Kim
- Department of Oral Biochemistry and Program in Cancer and Developmental Biology, Dental Research Institute, Seoul National University School of Dentistry, 28 Yeonkun-Dong, Chongno-Ku, Seoul 110-749, Republic of Korea.
| | - Seung-Ki Min
- Department of Oral and Maxillofacial Surgery, Seoul National University School of Dentistry, 28 Yeonkun-Dong, Chongno-Ku, Seoul 110-749, Republic of Korea.
| | - Sung Youn Jung
- Department of Oral Biochemistry and Program in Cancer and Developmental Biology, Dental Research Institute, Seoul National University School of Dentistry, 28 Yeonkun-Dong, Chongno-Ku, Seoul 110-749, Republic of Korea.
| | - Da Hyun Jang
- Department of Oral Biochemistry and Program in Cancer and Developmental Biology, Dental Research Institute, Seoul National University School of Dentistry, 28 Yeonkun-Dong, Chongno-Ku, Seoul 110-749, Republic of Korea.
| | - Taek-Ka Kwon
- Department of Dentistry, St. Vincent Hospital, Catholic University of Korea, Ji-Dong, Paldal-Ku, Suwon 442-723, Republic of Korea.
| | - Byung-Moo Min
- Department of Oral Biochemistry and Program in Cancer and Developmental Biology, Dental Research Institute, Seoul National University School of Dentistry, 28 Yeonkun-Dong, Chongno-Ku, Seoul 110-749, Republic of Korea.
| | - In-Sung Yeo
- Department of Prosthodontics and Dental Research Institute, Seoul National University School of Dentistry, 28 Yeonkun-Dong, Chongno-Ku, Seoul 110-749, Republic of Korea.
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Gonzalez-Perez F, Udina E, Navarro X. Extracellular matrix components in peripheral nerve regeneration. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2013; 108:257-75. [PMID: 24083438 DOI: 10.1016/b978-0-12-410499-0.00010-1] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Injured axons of the peripheral nerve are able to regenerate and, eventually, reinnervate target organs. However, functional recovery is usually poor after severe nerve injuries. The switch of Schwann cells to a proliferative state, secretion of trophic factors, and the presence of extracellular matrix (ECM) molecules (such as collagen, laminin, or fibronectin) in the distal stump are key elements to create a permissive environment for axons to grow. In this review, we focus attention on the ECM components and their tropic role in axonal regeneration. These components can also be used as molecular cues to guide the axons through artificial nerve guides in attempts to better mimic the natural environment found in a degenerating nerve. Most used scaffolds tested are based on natural molecules that form the ECM, but use of synthetic polymers and functionalization of hydrogels are bringing new options. Progress in tissue engineering will eventually lead to the design of composite artificial nerve grafts that may replace the use of autologous nerve grafts to sustain regeneration over long gaps.
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Affiliation(s)
- Francisco Gonzalez-Perez
- Institute of Neurosciences and Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Bellaterra, Spain
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