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Truong AT, Lee SJ, Hamada K, Kiyomi A, Guo H, Yamada Y, Kikkawa Y, Okamoto CT, Nomizu M, MacKay JA. Synergy between Laminin-Derived Elastin-like Polypeptides (LELPs) Optimizes Cell Spreading. Biomacromolecules 2024. [PMID: 38814168 DOI: 10.1021/acs.biomac.4c00144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2024]
Abstract
A major component of the extracellular matrix (ECM), laminins, modulates cells via diverse receptors. Their fragments have emerging utility as components of "ECM-mimetics" optimized to promote cell-based therapies. Recently, we reported that a bioactive laminin peptide known as A99 enhanced cell binding and spreading via fusion to an elastin-like polypeptide (ELP). The ELP "handle" serves as a rapid, noncovalent strategy to concentrate bioactive peptide mixtures onto a surface. We now report that this strategy can be further generalized across an expanded panel of additional laminin-derived elastin-like polypeptides (LELPs). A99 (AGTFALRGDNPQG), A2G80 (VQLRNGFPYFSY), AG73 (RKRLQVQLSIRT), and EF1m (LQLQEGRLHFMFD) all promote cell spreading while showing morphologically distinct F-actin formation. Equimolar mixtures of A99:A2G80-LELPs have synergistic effects on adhesion and spreading. Finally, three of these ECM-mimetics promote the neurite outgrowth of PC-12 cells. The evidence presented here demonstrates the potential of ELPs to deposit ECM-mimetics with applications in regenerative medicine, cell therapy, and tissue engineering.
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Affiliation(s)
- Anh T Truong
- Department of Pharmacology and Pharmaceutical Sciences, Alfred E. Mann School of Pharmacy and Pharmaceutical Sciences, University of Southern California, Los Angeles, California 90089, United States
- Department of Clinical Biochemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo 192-0392, Japan
| | - Shin-Jae Lee
- Department of Biomedical Engineering, Viterbi School of Engineering, University of Southern California, Los Angeles, California 90089, United States
| | - Keisuke Hamada
- Department of Clinical Biochemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo 192-0392, Japan
| | - Anna Kiyomi
- Department of Drug Safety and Risk Management, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo 192-0392, Japan
| | - Hao Guo
- Department of Pharmacology and Pharmaceutical Sciences, Alfred E. Mann School of Pharmacy and Pharmaceutical Sciences, University of Southern California, Los Angeles, California 90089, United States
| | - Yuji Yamada
- Department of Clinical Biochemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo 192-0392, Japan
| | - Yamato Kikkawa
- Department of Clinical Biochemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo 192-0392, Japan
| | - Curtis T Okamoto
- Department of Pharmacology and Pharmaceutical Sciences, Alfred E. Mann School of Pharmacy and Pharmaceutical Sciences, University of Southern California, Los Angeles, California 90089, United States
| | - Motoyoshi Nomizu
- Department of Clinical Biochemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo 192-0392, Japan
| | - J Andrew MacKay
- Department of Pharmacology and Pharmaceutical Sciences, Alfred E. Mann School of Pharmacy and Pharmaceutical Sciences, University of Southern California, Los Angeles, California 90089, United States
- Department of Biomedical Engineering, Viterbi School of Engineering, University of Southern California, Los Angeles, California 90089, United States
- Department of Ophthalmology, Keck School of Medicine, University of Southern California, Los Angeles, California 90033, United States
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2
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Im JH, Shin SH, Lee MK, Lee SR, Lee JJ, Chung YG. Evaluation of anatomical and histological characteristics of human peripheral nerves: as an effort to develop an efficient allogeneic nerve graft. Cell Tissue Bank 2022; 23:591-606. [DOI: 10.1007/s10561-022-09998-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 02/13/2022] [Indexed: 12/14/2022]
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3
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Sorkin JA, Rechany Z, Almog M, Dietzmeyer N, Shapira Y, Haastert-Talini K, Rochkind S. A Rabbit Model for Peripheral Nerve Reconstruction Studies Avoiding Automutilation Behavior. J Brachial Plex Peripher Nerve Inj 2022; 17:e22-e29. [PMID: 35747584 PMCID: PMC9213117 DOI: 10.1055/s-0042-1747959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Accepted: 06/08/2021] [Indexed: 12/01/2022] Open
Abstract
Background
The rabbit sciatic nerve injury model may represent a valuable alternative for critical gap distance seen in humans but often leads to automutilation. In this study, we modified the complete sciatic nerve injury model for avoiding autophagy.
Materials and Methods
In 20 adult female New Zealand White rabbits, instead of transecting the complete sciatic nerve, we unilaterally transected the tibial portion and preserved the peroneal portion. Thereby loss of sensation in the dorsal aspect of the paw was avoided. The tibial portion was repaired in a reversed autograft approach in a length of 2.6 cm. In an alternative repair approach, a gap of 2.6 cm in length was repaired with a chitosan-based nerve guide.
Results
During the 6-month follow-up period, there were no incidents of autotomy. Nerve regeneration of the tibial portion of the sciatic nerve was evaluated histologically and morphometrically. A clear difference between the distal segments of the healthy contralateral and the repaired tibial portion of the sciatic nerve was detectable, validating the model.
Conclusion
By transecting the isolated tibial portion of the rabbit sciatic nerve and leaving the peroneal portion intact, it was possible to eliminate automutilation behavior.
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Affiliation(s)
- Jonathan A Sorkin
- Research Center for Nerve Reconstruction, Department of Neurosurgery, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Ziv Rechany
- Research Center for Nerve Reconstruction, Department of Neurosurgery, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Mara Almog
- Research Center for Nerve Reconstruction, Department of Neurosurgery, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Nina Dietzmeyer
- Institute of Neuroanatomy and Cell Biology, Hannover Medical School, Hannover, Germany.,Center for Systems Neuroscience (ZSN), Hannover, Germany
| | - Yuval Shapira
- Division of Peripheral Nerve Reconstruction, Department of Neurosurgery, Tel Aviv Sourasky Medical Center, Tel Aviv University, Tel Aviv, Israel
| | - Kirsten Haastert-Talini
- Institute of Neuroanatomy and Cell Biology, Hannover Medical School, Hannover, Germany.,Center for Systems Neuroscience (ZSN), Hannover, Germany
| | - Shimon Rochkind
- Research Center for Nerve Reconstruction, Department of Neurosurgery, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Division of Peripheral Nerve Reconstruction, Department of Neurosurgery, Tel Aviv Sourasky Medical Center, Tel Aviv University, Tel Aviv, Israel
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Hsu YI, Mahara A, Yamaoka T. Identification of circulating cells interacted with integrin α4β1 ligand peptides REDV or HGGVRLY. Peptides 2021; 136:170470. [PMID: 33279572 DOI: 10.1016/j.peptides.2020.170470] [Citation(s) in RCA: 4] [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: 05/30/2020] [Revised: 11/25/2020] [Accepted: 11/28/2020] [Indexed: 12/14/2022]
Abstract
Recently, artificial blood vessels modified by integrin α4β1 ligand, such as REDV, showed endothelialization improvement and antithrombotic properties have been reported. Early endothelialization was affected by the type of circulating cells captured by the peptide in the initial transplantation state, however, it is still not clarified. In this study, we identified in vitro circulating cells bound with the peptides arginine-glutamic acid-aspartic acid-valine (REDV) or histidine-glycine-glycine-valine-arginine-leucine-tyrosine (HGGVRLY). The effect of free C- or N-terminal of HGGVRLY on the type of peptide-binding cells was also studied. The rat circulating cells were isolated from blood and incubated with 5(6)-carboxyfluorescein (5/6-FAM, F) labeled F-REDV (C-terminal free), F-HGGVRLY (C-terminal free), or HGGVRLY-F (N-terminal free). Furthermore, peptide-binding cells were identified by co-staining with various antibodies labeled with PE, PerCP/Cy5.5, or APC. N-terminal free HGGVRLY-F was found to bind to more circulating cells than C-terminal free F-REDV and F-HGGVRLY. The ratio of integrin α4β1 positive cell bound with F-REDV, F-HGGVRLY, or HGGVRLY-F reached over 90 %, demonstrating that HGGVRLY is also a ligand of integrin α4β1. Among identified cell types, we found that F-REDV mainly bounds with EPC and BMSC, while F-HGGVRLY with BMSC. HGGVRLY-F bounds with EPC and BMSC, exhibiting a higher EPC binding ratio than F-REDV and F-HGGVRLY.
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Affiliation(s)
- Yu-I Hsu
- Department of Biomedical Engineering, National Cerebral and Cardiovascular Center Research Institute, 6-1 Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
| | - Atsushi Mahara
- Department of Biomedical Engineering, National Cerebral and Cardiovascular Center Research Institute, 6-1 Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
| | - Tetsuji Yamaoka
- Department of Biomedical Engineering, National Cerebral and Cardiovascular Center Research Institute, 6-1 Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan.
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5
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Kambe Y, Ogino S, Yamanaka H, Morimoto N, Yamaoka T. Adipose tissue regeneration in a 3D-printed poly(lactic acid) frame-supported space in the inguinal region of rats. Biomed Mater Eng 2020; 31:203-210. [PMID: 32683340 DOI: 10.3233/bme-201103] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Adipose tissue engineering has been studied as an alternative to current options for breast reconstruction, such as lipofilling, flap reconstruction, and silicone implants. Previously, we demonstrated that a poly(L-lactic acid) mesh containing a collagen sponge, containing neither cells nor growth factors, could be filled with the regenerated adipose tissues when implanted in rodent models. However, the main factor contributing to adipogenesis remained unclear. OBJECTIVE We aimed to clarify whether adipogenesis can be achieved by the space provided by the mesh or by the bioactivity of collagen. METHODS A three-dimensional (3D) poly(lactic acid) (PLA) frame, which was stiff enough to maintain its shape, was fabricated by 3D printing. The frame with (PLA+ColI) or without (PLA only) a type I collagen hydrogel was implanted in the inguinal region of rats for up to 12 months. Adipose tissue regeneration in the PLA only and PLA+ColI groups was evaluated histologically. RESULTS The 3D PLA frame maintained its structure for 12 months in vivo and oil red O (ORO)-positive adipose tissues were regenerated in the frame. No significant difference in the ORO-positive area was detected between the PLA only and PLA+ColI groups. CONCLUSION The space supported by the frame was a key factor in adipogenesis in vivo.
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Affiliation(s)
- Yusuke Kambe
- Department of Biomedical Engineering, National Cerebral and Cardiovascular Center (NCVC) Research Institute, 6-1 Kishibe-Shimmachi, Suita, Osaka, Japan
| | - Shuichi Ogino
- Department of Plastic and Reconstructive Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin, Kawahara-cho, Sakyo-ku, Kyoto, Japan
| | - Hiroki Yamanaka
- Department of Plastic and Reconstructive Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin, Kawahara-cho, Sakyo-ku, Kyoto, Japan
| | - Naoki Morimoto
- Department of Plastic and Reconstructive Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin, Kawahara-cho, Sakyo-ku, Kyoto, Japan
| | - Tetsuji Yamaoka
- Department of Biomedical Engineering, National Cerebral and Cardiovascular Center (NCVC) Research Institute, 6-1 Kishibe-Shimmachi, Suita, Osaka, Japan
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6
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Truong AT, Hamada K, Yamada Y, Guo H, Kikkawa Y, Okamoto CT, MacKay JA, Nomizu M. Evaluation of extracellular matrix mimetic laminin bioactive peptide and elastin‐like polypeptide. FASEB J 2020; 34:6729-6740. [DOI: 10.1096/fj.201902794r] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 02/19/2020] [Accepted: 03/14/2020] [Indexed: 11/11/2022]
Affiliation(s)
- Anh Tan Truong
- Department of Pharmacology and Pharmaceutical Sciences School of Pharmacy University of Southern California Los Angeles CA USA
- Department of Clinical Biochemistry School of Pharmacy Tokyo University of Pharmacy and Life Sciences Hachioji Japan
| | - Keisuke Hamada
- Department of Clinical Biochemistry School of Pharmacy Tokyo University of Pharmacy and Life Sciences Hachioji Japan
| | - Yuji Yamada
- Department of Clinical Biochemistry School of Pharmacy Tokyo University of Pharmacy and Life Sciences Hachioji Japan
| | - Hao Guo
- Department of Pharmacology and Pharmaceutical Sciences School of Pharmacy University of Southern California Los Angeles CA USA
| | - Yamato Kikkawa
- Department of Clinical Biochemistry School of Pharmacy Tokyo University of Pharmacy and Life Sciences Hachioji Japan
| | - Curtis T. Okamoto
- Department of Pharmacology and Pharmaceutical Sciences School of Pharmacy University of Southern California Los Angeles CA USA
| | - J. Andrew MacKay
- Department of Pharmacology and Pharmaceutical Sciences School of Pharmacy University of Southern California Los Angeles CA USA
- Department of Biomedical Engineering University of Southern California Los Angeles CA USA
- Department of Ophthalmology University of Southern California Los Angeles CA USA
| | - Motoyoshi Nomizu
- Department of Clinical Biochemistry School of Pharmacy Tokyo University of Pharmacy and Life Sciences Hachioji Japan
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7
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Dixon AR, Jariwala SH, Bilis Z, Loverde JR, Pasquina PF, Alvarez LM. Bridging the gap in peripheral nerve repair with 3D printed and bioprinted conduits. Biomaterials 2018; 186:44-63. [DOI: 10.1016/j.biomaterials.2018.09.010] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 09/06/2018] [Accepted: 09/07/2018] [Indexed: 01/14/2023]
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8
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Bandiera A, Passamonti S, Dolci LS, Focarete ML. Composite of Elastin-Based Matrix and Electrospun Poly(L-Lactic Acid) Fibers: A Potential Smart Drug Delivery System. Front Bioeng Biotechnol 2018; 6:127. [PMID: 30258842 PMCID: PMC6143670 DOI: 10.3389/fbioe.2018.00127] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 08/24/2018] [Indexed: 11/13/2022] Open
Abstract
Stimuli-responsive hydrogel matrices are inspiring manifold applications in controlled delivery of bioactive compounds. Elastin-derived polypeptides form hydrogel matrices that may release bioactive moieties as a function of local increase of active elastases, as it would occur in several processes like inflammation. In view of the development of a patch for healing wounds, recombinant elastin-based polypeptides were combined with a proteolysis-resistant scaffold, made of electrospun poly-L-lactic acid (PLLA) fibers. The results of this study demonstrated the compatibility of these two components. An efficient procedure to obtain a composite material retaining the main features of each component was established. The release of the elastin moiety was monitored by means of a simple protocol. Our data showed that electrospun PLLA can form a composite with fusion proteins bound to elastin-derived polypeptides. Therefore, our approach allows designing a therapeutic agent delivery platform to realize devices capable of responding and interacting with biological systems at the molecular level.
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Affiliation(s)
| | | | - Luisa Stella Dolci
- Department of Chemistry "G. Ciamician" and National Consortium of Materials Science and Technology (INSTM, Bologna RU), Alma Mater Studiorum - Università di Bologna, Bologna, Italy
| | - Maria Letizia Focarete
- Department of Chemistry "G. Ciamician" and National Consortium of Materials Science and Technology (INSTM, Bologna RU), Alma Mater Studiorum - Università di Bologna, Bologna, Italy.,Health Sciences and Technologies-Interdepartmental Center for Industrial Research, Alma Mater Studiorum - Università di Bologna, Bologna, Italy
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9
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Golafshan N, Kharaziha M, Alehosseini M. A three-layered hollow tubular scaffold as an enhancement of nerve regeneration potential. Biomed Mater 2018; 13:065005. [DOI: 10.1088/1748-605x/aad8da] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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10
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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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11
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Wu W, Cheng R, das Neves J, Tang J, Xiao J, Ni Q, Liu X, Pan G, Li D, Cui W, Sarmento B. Advances in biomaterials for preventing tissue adhesion. J Control Release 2017; 261:318-336. [DOI: 10.1016/j.jconrel.2017.06.020] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2017] [Revised: 06/19/2017] [Accepted: 06/20/2017] [Indexed: 10/19/2022]
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12
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Recombinant production and purification of short hydrophobic Elastin-like polypeptides with low transition temperatures. Protein Expr Purif 2016; 121:81-7. [DOI: 10.1016/j.pep.2016.01.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 01/14/2016] [Accepted: 01/19/2016] [Indexed: 11/21/2022]
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13
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Efficient bridging of 20 mm rat sciatic nerve lesions with a longitudinally micro-structured collagen scaffold. Biomaterials 2016; 75:112-122. [DOI: 10.1016/j.biomaterials.2015.10.009] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Revised: 08/29/2015] [Accepted: 10/04/2015] [Indexed: 11/20/2022]
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14
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Yeo GC, Aghaei-Ghareh-Bolagh B, Brackenreg EP, Hiob MA, Lee P, Weiss AS. Fabricated Elastin. Adv Healthc Mater 2015; 4:2530-2556. [PMID: 25771993 PMCID: PMC4568180 DOI: 10.1002/adhm.201400781] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2014] [Revised: 02/09/2015] [Indexed: 12/18/2022]
Abstract
The mechanical stability, elasticity, inherent bioactivity, and self-assembly properties of elastin make it a highly attractive candidate for the fabrication of versatile biomaterials. The ability to engineer specific peptide sequences derived from elastin allows the precise control of these physicochemical and organizational characteristics, and further broadens the diversity of elastin-based applications. Elastin and elastin-like peptides can also be modified or blended with other natural or synthetic moieties, including peptides, proteins, polysaccharides, and polymers, to augment existing capabilities or confer additional architectural and biofunctional features to compositionally pure materials. Elastin and elastin-based composites have been subjected to diverse fabrication processes, including heating, electrospinning, wet spinning, solvent casting, freeze-drying, and cross-linking, for the manufacture of particles, fibers, gels, tubes, sheets and films. The resulting materials can be tailored to possess specific strength, elasticity, morphology, topography, porosity, wettability, surface charge, and bioactivity. This extraordinary tunability of elastin-based constructs enables their use in a range of biomedical and tissue engineering applications such as targeted drug delivery, cell encapsulation, vascular repair, nerve regeneration, wound healing, and dermal, cartilage, bone, and dental replacement.
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Affiliation(s)
- Giselle C. Yeo
- Charles Perkins Centre, The University of Sydney, NSW 2006, Australia
- School of Molecular Bioscience, The University of Sydney, NSW 2006, Australia
| | - Behnaz Aghaei-Ghareh-Bolagh
- Charles Perkins Centre, The University of Sydney, NSW 2006, Australia
- School of Molecular Bioscience, The University of Sydney, NSW 2006, Australia
| | - Edwin P. Brackenreg
- Charles Perkins Centre, The University of Sydney, NSW 2006, Australia
- School of Molecular Bioscience, The University of Sydney, NSW 2006, Australia
| | - Matti A. Hiob
- Charles Perkins Centre, The University of Sydney, NSW 2006, Australia
- School of Molecular Bioscience, The University of Sydney, NSW 2006, Australia
| | - Pearl Lee
- Charles Perkins Centre, The University of Sydney, NSW 2006, Australia
- School of Molecular Bioscience, The University of Sydney, NSW 2006, Australia
| | - Anthony S. Weiss
- Charles Perkins Centre, The University of Sydney, NSW 2006, Australia
- School of Molecular Bioscience, The University of Sydney, NSW 2006, Australia
- Bosch Institute, The University of Sydney, NSW 2006, Australia
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15
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Therapeutic-designed electrospun bone scaffolds: mesoporous bioactive nanocarriers in hollow fiber composites to sequentially deliver dual growth factors. Acta Biomater 2015; 16:103-16. [PMID: 25617805 DOI: 10.1016/j.actbio.2014.12.028] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Revised: 11/28/2014] [Accepted: 12/30/2014] [Indexed: 11/21/2022]
Abstract
A novel therapeutic design of nanofibrous scaffolds, holding a capacity to load and deliver dual growth factors, that targets bone regeneration is proposed. Mesoporous bioactive glass nanospheres (MBNs) were used as bioactive nanocarriers for long-term delivery of the osteogenic enhancer fibroblast growth factor 18 (FGF18). Furthermore, a core-shell structure of a biopolymer fiber made of polyethylene oxide/polycaprolactone was introduced to load FGF2, another type of cell proliferative and angiogenic growth factor, safely within the core while releasing it more rapidly than FGF18. The prepared MBNs showed enlarged mesopores of about 7 nm, with a large surface area and pore volume. The protein-loading capacity of MBNs was as high as 13% when tested using cytochrome C, a model protein. The protein-loaded MBNs were smoothly incorporated within the core of the fiber by electrospinning, while preserving a fibrous morphology. The incorporation of MBNs significantly increased the apatite-forming ability and mechanical properties of the core-shell fibers. The possibility of sequential delivery of two experimental growth factors, FGF2 and FGF18, incorporated either within the core-shell fiber (FGF2) or within MBNs (FGF18), was demonstrated by the use of cytochrome C. In vitro studies using rat mesenchymal stem cells demonstrated the effects of the FGF2-FGF18 loadings: significant stimulation of cell proliferation as well as the induction of alkaline phosphate activity and cellular mineralization. An in vivo study performed on rat calvarium defects for 6 weeks demonstrated that FGF2-FGF18-loaded fiber scaffolds had significantly higher bone-forming ability, in terms of bone volume and density. The current design utilizing novel MBN nanocarriers with a core-shell structure aims to release two types of growth factors, FGF2 and FGF18, in a sequential manner, and is considered to provide a promising therapeutic scaffold platform that is effective for bone regeneration.
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16
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Soto CM. Protein engineering and other bio-synthetic routes for bio-based materials: current uses and potential applications. Front Chem 2014; 2:83. [PMID: 25353016 PMCID: PMC4195369 DOI: 10.3389/fchem.2014.00083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Accepted: 09/19/2014] [Indexed: 11/13/2022] Open
Affiliation(s)
- Carissa M Soto
- U. S. Naval Research Laboratory, Center for Bio/Molecular Science and Engineering Washington, DC, USA
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