301
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Wood FM. Skin regeneration: the complexities of translation into clinical practise. Int J Biochem Cell Biol 2014; 56:133-40. [PMID: 25448410 DOI: 10.1016/j.biocel.2014.10.025] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Revised: 10/22/2014] [Accepted: 10/22/2014] [Indexed: 12/01/2022]
Abstract
The integration of engineering into biological science has resulted in the capacity to provide tissue engineered solutions for tissue damage. Skin regeneration remains the goal of skin repair to reduce the long term consequences of scarring to the individual. A scar is abnormal in its architecture, chemistry and cell phenotype, tissue engineering of scaffolds and cells opens up the potential of tissue regeneration into the future. Tissue engineering solutions have been applied to skin many decades despite technical success the clinical application has been modest. To realise the potential of the developing technologies needs alignment of not only the science and engineering but also the commercial upscaling of production in a safe and regulated framework for clinical use. In addition the education and training for the introduction of new technology within the health system is essential, bringing together the technology and systems for utilisation to optimise the patient outcome. This article is part of a Directed Issue entitled: Regenerative Medicine: The challenge of translation.
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Affiliation(s)
- Fiona M Wood
- Burns Service of Western Australia, Burn Injury Research Unit, University of Western Australia, Australia.
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302
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Lee H, Kim G. Enhanced cellular activities of polycaprolactone/alginate-based cell-laden hierarchical scaffolds for hard tissue engineering applications. J Colloid Interface Sci 2014; 430:315-25. [DOI: 10.1016/j.jcis.2014.05.065] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 05/28/2014] [Accepted: 05/30/2014] [Indexed: 10/25/2022]
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303
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Eungdamrong NJ, Higgins C, Guo Z, Lee WH, Gillette B, Sia S, Christiano AM. Challenges and promises in modeling dermatologic disorders with bioengineered skin. Exp Biol Med (Maywood) 2014; 239:1215-24. [PMID: 24951469 DOI: 10.1177/1535370214538747] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The tremendous cost of drug development is often attributed to the long time interval between identifying lead compounds in preclinical studies to assessing clinical efficacy in randomized clinical trials. Many candidate molecules show promise in cell culture or animal models, only to fail in late stage in human investigations. There is a need for novel technologies that allow investigators to quickly and reliably predict drug safety and efficacy. The advent of microtechnology has made it possible to integrate multiple microphysiologic organ systems into a single microfabricated chip. This review focuses on three-dimensional engineered skin, which has enjoyed a long history of uses both in clinical treatments of refractory ulcers and as a laboratory model. We discuss current biological and engineering challenges in construction of a robust bioengineered skin and provide a blueprint for its potential utility to model dermatologic disorders such as psoriasis or cutaneous drug reactions.
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Affiliation(s)
- Narat J Eungdamrong
- The Ronald O. Perelman Department of Dermatology, New York University School of Medicine, New York, NY 10016, USA Departments of Dermatology, Columbia University College of Physicians & Surgeons, New York, NY 10032, USA
| | - Claire Higgins
- Departments of Dermatology, Columbia University College of Physicians & Surgeons, New York, NY 10032, USA
| | - Zongyou Guo
- Departments of Dermatology, Columbia University College of Physicians & Surgeons, New York, NY 10032, USA
| | - Wen-Han Lee
- Department of Biomedical Engineering, Columbia University, New York, NY 10027, USA
| | - Brian Gillette
- Department of Biomedical Engineering, Columbia University, New York, NY 10027, USA
| | - Samuel Sia
- Department of Biomedical Engineering, Columbia University, New York, NY 10027, USA
| | - Angela M Christiano
- Departments of Dermatology, Columbia University College of Physicians & Surgeons, New York, NY 10032, USA Department of Genetics & Development, Columbia University College of Physicians & Surgeons, New York, NY 10032, USA
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304
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Dias AD, Kingsley DM, Corr DT. Recent advances in bioprinting and applications for biosensing. BIOSENSORS 2014; 4:111-36. [PMID: 25587413 PMCID: PMC4264374 DOI: 10.3390/bios4020111] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Revised: 04/12/2014] [Accepted: 04/18/2014] [Indexed: 12/19/2022]
Abstract
Future biosensing applications will require high performance, including real-time monitoring of physiological events, incorporation of biosensors into feedback-based devices, detection of toxins, and advanced diagnostics. Such functionality will necessitate biosensors with increased sensitivity, specificity, and throughput, as well as the ability to simultaneously detect multiple analytes. While these demands have yet to be fully realized, recent advances in biofabrication may allow sensors to achieve the high spatial sensitivity required, and bring us closer to achieving devices with these capabilities. To this end, we review recent advances in biofabrication techniques that may enable cutting-edge biosensors. In particular, we focus on bioprinting techniques (e.g., microcontact printing, inkjet printing, and laser direct-write) that may prove pivotal to biosensor fabrication and scaling. Recent biosensors have employed these fabrication techniques with success, and further development may enable higher performance, including multiplexing multiple analytes or cell types within a single biosensor. We also review recent advances in 3D bioprinting, and explore their potential to create biosensors with live cells encapsulated in 3D microenvironments. Such advances in biofabrication will expand biosensor utility and availability, with impact realized in many interdisciplinary fields, as well as in the clinic.
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Affiliation(s)
- Andrew D Dias
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 Eighth St., Troy, NY 12180, USA; E-Mails: (A.D.D.); (D.M.K.)
| | - David M Kingsley
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 Eighth St., Troy, NY 12180, USA; E-Mails: (A.D.D.); (D.M.K.)
| | - David T Corr
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 Eighth St., Troy, NY 12180, USA; E-Mails: (A.D.D.); (D.M.K.)
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305
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Katis IN, Holloway JA, Madsen J, Faust SN, Garbis SD, Smith PJS, Voegeli D, Bader DL, Eason RW, Sones CL. Paper-based colorimetric enzyme linked immunosorbent assay fabricated by laser induced forward transfer. BIOMICROFLUIDICS 2014; 8:036502. [PMID: 24926392 PMCID: PMC4032417 DOI: 10.1063/1.4878696] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Accepted: 05/08/2014] [Indexed: 05/18/2023]
Abstract
We report the Laser Induced Forward Transfer (LIFT) of antibodies from a liquid donor film onto paper receivers for application as point-of-care diagnostic sensors. To minimise the loss of functionality of the active biomolecules during transfer, a dynamic release layer was employed to shield the biomaterial from direct exposure to the pulsed laser source. Cellulose paper was chosen as the ideal receiver because of its inherent bio-compatibility, liquid transport properties, wide availability and low cost, all of which make it an efficient and suitable platform for point-of-care diagnostic sensors. Both enzyme-tagged and untagged IgG antibodies were LIFT-printed and their functionality was confirmed via a colorimetric enzyme-linked immunosorbent assay. Localisation of the printed antibodies was exhibited, which can allow the creation of complex 2-d patterns such as QR codes or letters for use in a final working device. Finally, a calibration curve was determined that related the intensity of the colour obtained to the concentration of active antibodies to enable quantitative assessment of the device performance. The motivation for this work was to implement a laser-based procedure for manufacturing low-cost, point-of-care diagnostic devices on paper.
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Affiliation(s)
- Ioannis N Katis
- Optoelectronics Research Centre, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
| | - Judith A Holloway
- Clinical and Experimental Science, Faculty of Medicine and Institute for Life Sciences, University of Southampton and NIHR Wellcome Trust Clinical Research Facility and Respiratory Biomedical Research Unit, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
| | - Jens Madsen
- Clinical and Experimental Science, Faculty of Medicine and Institute for Life Sciences, University of Southampton and NIHR Wellcome Trust Clinical Research Facility and Respiratory Biomedical Research Unit, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
| | - Saul N Faust
- Clinical and Experimental Science, Faculty of Medicine and Institute for Life Sciences, University of Southampton and NIHR Wellcome Trust Clinical Research Facility and Respiratory Biomedical Research Unit, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
| | - Spiros D Garbis
- Institute for Life Sciences, Centre for Proteomic Research, Cancer Sciences, and Clinical and Experimental Medicine, University of Southampton, Highfield Campus, Southampton, United Kingdom
| | - Peter J S Smith
- Institute for Life Sciences and Centre for Biological Sciences, University of Southampton, Highfield, Southampton, United Kingdom
| | - David Voegeli
- Faculty of Health Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
| | - Dan L Bader
- Faculty of Health Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
| | - Robert W Eason
- Optoelectronics Research Centre, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
| | - Collin L Sones
- Optoelectronics Research Centre, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
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306
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Walters BD, Stegemann JP. Strategies for directing the structure and function of three-dimensional collagen biomaterials across length scales. Acta Biomater 2014; 10:1488-501. [PMID: 24012608 PMCID: PMC3947739 DOI: 10.1016/j.actbio.2013.08.038] [Citation(s) in RCA: 135] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Revised: 08/17/2013] [Accepted: 08/28/2013] [Indexed: 12/16/2022]
Abstract
Collagen type I is a widely used natural biomaterial that has found utility in a variety of biological and medical applications. Its well-characterized structure and role as an extracellular matrix protein make it a highly relevant material for controlling cell function and mimicking tissue properties. Collagen type I is abundant in a number of tissues, and can be isolated as a purified protein. This review focuses on hydrogel biomaterials made by reconstituting collagen type I from a solubilized form, with an emphasis on in vitro studies in which collagen structure can be controlled. The hierarchical structure of collagen from the nanoscale to the macroscale is described, with an emphasis on how structure is related to function across scales. Methods of reconstituting collagen into hydrogel materials are presented, including molding of macroscopic constructs, creation of microscale modules and electrospinning of nanoscale fibers. The modification of collagen biomaterials to achieve the desired structures and functions is also addressed, with particular emphasis on mechanical control of collagen structure, creation of collagen composite materials and crosslinking of collagenous matrices. Biomaterials scientists have made remarkable progress in rationally designing collagen-based biomaterials and in applying them both to the study of biology and for therapeutic benefit. This broad review illustrates recent examples of techniques used to control collagen structure and thereby to direct its biological and mechanical functions.
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Affiliation(s)
- B D Walters
- Department of Biomedical Engineering, University of Michigan, 1101 Beal Avenue, Ann Arbor, MI 48109, USA
| | - J P Stegemann
- Department of Biomedical Engineering, University of Michigan, 1101 Beal Avenue, Ann Arbor, MI 48109, USA.
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307
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Mathes SH, Ruffner H, Graf-Hausner U. The use of skin models in drug development. Adv Drug Deliv Rev 2014; 69-70:81-102. [PMID: 24378581 DOI: 10.1016/j.addr.2013.12.006] [Citation(s) in RCA: 185] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Revised: 12/10/2013] [Accepted: 12/17/2013] [Indexed: 12/12/2022]
Abstract
Three dimensional (3D) tissue models of the human skin are probably the most developed and understood in vitro engineered constructs. The motivation to accomplish organotypic structures was driven by the clinics to enable transplantation of in vitro grown tissue substitutes and by the cosmetics industry as alternative test substrates in order to replace animal models. Today a huge variety of 3D human skin models exist, covering a multitude of scientific and/or technical demands. This review summarizes and discusses different approaches of skin model development and sets them into the context of drug development. Although human skin models have become indispensable for the cosmetics industry, they have not yet started their triumphal procession in pharmaceutical research and development. For drug development these tissue models may be of particular interest for a) systemically acting drugs applied on the skin, and b) drugs acting at the site of application in the case of skin diseases or disorders. Although quite a broad spectrum of models covering different aspects of the skin as a biologically acting surface exists, these are most often single stand-alone approaches. In order to enable the comprehensive application into drug development processes, the approaches have to be synchronized to allow a cross-over comparison. Besides the development of biological relevant models, other issues are not less important in the context of drug development: standardized production procedures, process automation, establishment of significant analytical methods, and data correlation. For the successful routine use of engineered human skin models in drug development, major requirements were defined. If these requirements can be accomplished in the next few years, human organotypic skin models will become indispensable for drug development, too.
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Affiliation(s)
- Stephanie H Mathes
- Institute of Chemistry and Biological Chemistry, Zurich University of Applied Sciences (ZHAW), Einsiedlerstrasse 31, 8820 Waedenswil, Switzerland
| | - Heinz Ruffner
- Developmental and Molecular Pathways (DMP), Novartis Institutes for BioMedical Research (NIBR), Fabrikstrasse 22, 4056 Basel, Switzerland
| | - Ursula Graf-Hausner
- Institute of Chemistry and Biological Chemistry, Zurich University of Applied Sciences (ZHAW), Einsiedlerstrasse 31, 8820 Waedenswil, Switzerland.
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308
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Hribar KC, Soman P, Warner J, Chung P, Chen S. Light-assisted direct-write of 3D functional biomaterials. LAB ON A CHIP 2014; 14:268-75. [PMID: 24257507 DOI: 10.1039/c3lc50634g] [Citation(s) in RCA: 129] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Light-assisted 3D direct-printing of biomaterials and cellular-scaffolds has the potential to develop novel lab-on-a-chip devices (LOCs) for a variety of biomedical applications, from drug discovery and diagnostic testing to in vitro tissue engineering and regeneration. Direct-writing describes a broad family of fabrication methods that typically employ computer-controlled translational stages to manufacture structures at multi-length scales. This review focuses on light-assisted direct-write fabrication for generating 3D functional scaffolds with precise micro- and nano-architecture, using both synthetic as well as naturally derived biomaterials. Two bioprinting approaches are discussed in detail - projection printing and laser-based systems - where each method is capable of modulating multiple scaffold parameters, such as 3D architecture, mechanical properties (e.g. stiffness), Poisson's ratio, chemical gradients, biological cell distributions, and porosity. The light-assisted direct-writing techniques described in this review provide the reader with alternative approaches to fabricate 3D biomaterials for utility in LOCs.
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Affiliation(s)
- Kolin C Hribar
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA.
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309
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Annabi N, Tamayol A, Uquillas JA, Akbari M, Bertassoni LE, Cha C, Camci-Unal G, Dokmeci MR, Peppas NA, Khademhosseini A. 25th anniversary article: Rational design and applications of hydrogels in regenerative medicine. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:85-123. [PMID: 24741694 PMCID: PMC3925010 DOI: 10.1002/adma.201303233] [Citation(s) in RCA: 843] [Impact Index Per Article: 84.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Hydrogels are hydrophilic polymer-based materials with high water content and physical characteristics that resemble the native extracellular matrix. Because of their remarkable properties, hydrogel systems are used for a wide range of biomedical applications, such as three-dimensional (3D) matrices for tissue engineering, drug-delivery vehicles, composite biomaterials, and as injectable fillers in minimally invasive surgeries. In addition, the rational design of hydrogels with controlled physical and biological properties can be used to modulate cellular functionality and tissue morphogenesis. Here, the development of advanced hydrogels with tunable physiochemical properties is highlighted, with particular emphasis on elastomeric, light-sensitive, composite, and shape-memory hydrogels. Emerging technologies developed over the past decade to control hydrogel architecture are also discussed and a number of potential applications and challenges in the utilization of hydrogels in regenerative medicine are reviewed. It is anticipated that the continued development of sophisticated hydrogels will result in clinical applications that will improve patient care and quality of life.
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Affiliation(s)
- Nasim Annabi
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02139, USA. Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, 02115, USA
| | - Ali Tamayol
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02139, USA. Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Jorge Alfredo Uquillas
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02139, USA. Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Mohsen Akbari
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02139, USA. Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, 02115, USA
| | - Luiz E. Bertassoni
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02139, USA. Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Chaenyung Cha
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02139, USA. Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Gulden Camci-Unal
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02139, USA. Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Mehmet R. Dokmeci
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02139, USA. Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Nicholas A. Peppas
- Department of Biomedical Engineering, Biomedical Engineering Building 3.110B, The University of Texas at Austin, 1 University Station, C0800, Austin, Texas, 78712–1062, USA
| | - Ali Khademhosseini
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02139, USA. Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, 02115, USA
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310
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Yeo M, Kim G. Cell-printed hierarchical scaffolds consisting of micro-sized polycaprolactone (PCL) and electrospun PCL nanofibers/cell-laden alginate struts for tissue regeneration. J Mater Chem B 2014; 2:314-324. [DOI: 10.1039/c3tb21163k] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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311
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Oral Presentations. Regen Med 2013. [DOI: 10.2217/rme.13.op] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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312
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Malda J, Visser J, Melchels FP, Jüngst T, Hennink WE, Dhert WJA, Groll J, Hutmacher DW. 25th anniversary article: Engineering hydrogels for biofabrication. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:5011-28. [PMID: 24038336 DOI: 10.1002/adma.201302042] [Citation(s) in RCA: 1086] [Impact Index Per Article: 98.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Revised: 06/19/2013] [Indexed: 05/19/2023]
Abstract
With advances in tissue engineering, the possibility of regenerating injured tissue or failing organs has become a realistic prospect for the first time in medical history. Tissue engineering - the combination of bioactive materials with cells to generate engineered constructs that functionally replace lost and/or damaged tissue - is a major strategy to achieve this goal. One facet of tissue engineering is biofabrication, where three-dimensional tissue-like structures composed of biomaterials and cells in a single manufacturing procedure are generated. Cell-laden hydrogels are commonly used in biofabrication and are termed "bioinks". Hydrogels are particularly attractive for biofabrication as they recapitulate several features of the natural extracellular matrix and allow cell encapsulation in a highly hydrated mechanically supportive three-dimensional environment. Additionally, they allow for efficient and homogeneous cell seeding, can provide biologically-relevant chemical and physical signals, and can be formed in various shapes and biomechanical characteristics. However, despite the progress made in modifying hydrogels for enhanced bioactivation, cell survival and tissue formation, little attention has so far been paid to optimize hydrogels for the physico-chemical demands of the biofabrication process. The resulting lack of hydrogel bioinks have been identified as one major hurdle for a more rapid progress of the field. In this review we summarize and focus on the deposition process, the parameters and demands of hydrogels in biofabrication, with special attention to robotic dispensing as an approach that generates constructs of clinically relevant dimensions. We aim to highlight this current lack of effectual hydrogels within biofabrication and initiate new ideas and developments in the design and tailoring of hydrogels. The successful development of a "printable" hydrogel that supports cell adhesion, migration, and differentiation will significantly advance this exciting and promising approach for tissue engineering.
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Affiliation(s)
- Jos Malda
- Department of Orthopaedics, University Medical Center Utrecht, P.O. Box 85500, 3508, GA Utrecht, The Netherlands; Institute of Health and Biomedical Innovation, Queensland University of TechnologyKelvin Grove Urban Village, Brisbane, QLD 4059, Australia; Department of Equine Sciences, Faculty of Veterinary Sciences, Utrecht University, Yalelaan 112, 3584 CM, Utrecht, The Netherlands
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313
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Petrak D, Atefi E, Yin L, Chilian W, Tavana H. Automated, spatio-temporally controlled cell microprinting with polymeric aqueous biphasic system. Biotechnol Bioeng 2013; 111:404-12. [DOI: 10.1002/bit.25100] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Revised: 08/15/2013] [Accepted: 08/16/2013] [Indexed: 02/02/2023]
Affiliation(s)
- David Petrak
- Department of Biomedical Engineering; The University of Akron; Akron Ohio 44325
| | - Ehsan Atefi
- Department of Biomedical Engineering; The University of Akron; Akron Ohio 44325
| | - Liya Yin
- Department of Integrative Medical Sciences, College of Medicine; Northeast Ohio Medical University; Rootstown Ohio
| | - William Chilian
- Department of Integrative Medical Sciences, College of Medicine; Northeast Ohio Medical University; Rootstown Ohio
| | - Hossein Tavana
- Department of Biomedical Engineering; The University of Akron; Akron Ohio 44325
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314
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Ahn S, Lee H, Kim G. Functional cell-laden alginate scaffolds consisting of core/shell struts for tissue regeneration. Carbohydr Polym 2013; 98:936-42. [PMID: 23987431 DOI: 10.1016/j.carbpol.2013.07.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2013] [Revised: 06/04/2013] [Accepted: 07/03/2013] [Indexed: 10/26/2022]
Abstract
We report an innovative cell-dispensing process using a three-axis robot system coupled with a micro-core/shell nozzle and an aerosol cross-linking process to achieve controlled mechanical properties and high cell viability of porous cell-laden alginate scaffolds. The scaffolds were fabricated into layer-by-layer struts, which were used to design the pore structure. The struts consisted of a core/shell region; a low weight fraction of alginate and cells (MC3T3-E1) was injected in the shell region to efficiently exchange nutrients and metabolic wastes, while a high weight fraction of alginate without cells was deposited in the core region to improve the mechanical properties of the cell-laden scaffold. After 10 days of cell culture, the cell viability (95%) in the shell region improved significantly compared to 70% for the cells homogeneously distributed in the struts, and the mechanical properties were enhanced from 1.4 to 15.7 kPa. Stained nuclei and F-actin images showed that the laden cells proliferated well on the functional hydrogel scaffold after 20 days of cell culture, indicating that the cells concentrated in the shell region of the struts survived and increased their metabolic functions during several incubation periods compared to the standard cell-laden scaffold. This innovative cell-dispensing technique represents a promising fabrication tool for obtaining bottom-up scaffolds for various tissue regenerations.
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Affiliation(s)
- SeungHyun Ahn
- Department of Bio-Mechatronic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon, South Korea
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315
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Pereira RF, Barrias CC, Granja PL, Bartolo PJ. Advanced biofabrication strategies for skin regeneration and repair. Nanomedicine (Lond) 2013; 8:603-21. [DOI: 10.2217/nnm.13.50] [Citation(s) in RCA: 207] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Skin is the largest organ of human body, acting as a barrier with protective, immunologic and sensorial functions. Its permanent exposure to the external environment can result in different kinds of damage with loss of variable volumes of extracellular matrix. For the treatment of skin lesions, several strategies are currently available, such as the application of autografts, allografts, wound dressings and tissue-engineered substitutes. Although proven clinically effective, these strategies are still characterized by key limitations such as patient morbidity, inadequate vascularization, low adherence to the wound bed, the inability to reproduce skin appendages and high manufacturing costs. Advanced strategies based on both bottom-up and top-down approaches offer an effective, permanent and viable alternative to solve the abovementioned drawbacks by combining biomaterials, cells, growth factors and advanced biomanufacturing techniques. This review details recent advances in skin regeneration and repair strategies, and describes their major advantages and limitations. Future prospects for skin regeneration are also outlined.
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Affiliation(s)
- Rúben F Pereira
- Centre for Rapid & Sustainable Product Development, Polytechnic Institute of Leiria, Portugal
- Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Cristina C Barrias
- Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
| | - Pedro L Granja
- Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
- Faculdade de Engenharia da Universidade do Porto, Departamento de Engenharia Metalúrgica & Materiais, Porto, Portugal
| | - Paulo J Bartolo
- Centre for Rapid & Sustainable Product Development, Polytechnic Institute of Leiria, Portugal.
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316
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Ferris CJ, Gilmore KG, Wallace GG, In het Panhuis M. Biofabrication: an overview of the approaches used for printing of living cells. Appl Microbiol Biotechnol 2013; 97:4243-58. [PMID: 23525900 DOI: 10.1007/s00253-013-4853-6] [Citation(s) in RCA: 131] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2012] [Revised: 03/09/2013] [Accepted: 03/11/2013] [Indexed: 02/01/2023]
Abstract
The development of cell printing is vital for establishing biofabrication approaches as clinically relevant tools. Achieving this requires bio-inks which must not only be easily printable, but also allow controllable and reproducible printing of cells. This review outlines the general principles and current progress and compares the advantages and challenges for the most widely used biofabrication techniques for printing cells: extrusion, laser, microvalve, inkjet and tissue fragment printing. It is expected that significant advances in cell printing will result from synergistic combinations of these techniques and lead to optimised resolution, throughput and the overall complexity of printed constructs.
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Affiliation(s)
- Cameron J Ferris
- Soft Materials Group, School of Chemistry, University of Wollongong, Wollongong, NSW 2522, Australia
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317
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Michael S, Sorg H, Peck CT, Koch L, Deiwick A, Chichkov B, Vogt PM, Reimers K. Tissue engineered skin substitutes created by laser-assisted bioprinting form skin-like structures in the dorsal skin fold chamber in mice. PLoS One 2013; 8:e57741. [PMID: 23469227 PMCID: PMC3587634 DOI: 10.1371/journal.pone.0057741] [Citation(s) in RCA: 314] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2012] [Accepted: 01/24/2013] [Indexed: 02/07/2023] Open
Abstract
Tissue engineering plays an important role in the production of skin equivalents for the therapy of chronic and especially burn wounds. Actually, there exists no (cellularized) skin equivalent which might be able to satisfactorily mimic native skin. Here, we utilized a laser-assisted bioprinting (LaBP) technique to create a fully cellularized skin substitute. The unique feature of LaBP is the possibility to position different cell types in an exact three-dimensional (3D) spatial pattern. For the creation of the skin substitutes, we positioned fibroblasts and keratinocytes on top of a stabilizing matrix (Matriderm®). These skin constructs were subsequently tested in vivo, employing the dorsal skin fold chamber in nude mice. The transplants were placed into full-thickness skin wounds and were fully connected to the surrounding tissue when explanted after 11 days. The printed keratinocytes formed a multi-layered epidermis with beginning differentiation and stratum corneum. Proliferation of the keratinocytes was mainly detected in the suprabasal layers. In vitro controls, which were cultivated at the air-liquid-interface, also exhibited proliferative cells, but they were rather located in the whole epidermis. E-cadherin as a hint for adherens junctions and therefore tissue formation could be found in the epidermis in vivo as well as in vitro. In both conditions, the printed fibroblasts partly stayed on top of the underlying Matriderm® where they produced collagen, while part of them migrated into the Matriderm®. In the mice, some blood vessels could be found to grow from the wound bed and the wound edges in direction of the printed cells. In conclusion, we could show the successful 3D printing of a cell construct via LaBP and the subsequent tissue formation in vivo. These findings represent the prerequisite for the creation of a complex tissue like skin, consisting of different cell types in an intricate 3D pattern.
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Affiliation(s)
- Stefanie Michael
- Department of Plastic, Hand- and Reconstructive Surgery, Hannover Medical School, Hannover, Germany
- * E-mail:
| | - Heiko Sorg
- Department of Plastic, Hand- and Reconstructive Surgery, Hannover Medical School, Hannover, Germany
| | - Claas-Tido Peck
- Department of Plastic, Hand- and Reconstructive Surgery, Hannover Medical School, Hannover, Germany
| | - Lothar Koch
- Laser Zentrum Hannover e.V., Hannover, Germany
| | | | | | - Peter M. Vogt
- Department of Plastic, Hand- and Reconstructive Surgery, Hannover Medical School, Hannover, Germany
| | - Kerstin Reimers
- Department of Plastic, Hand- and Reconstructive Surgery, Hannover Medical School, Hannover, Germany
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318
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Lu K, Gordon R, Cao T. Reverse engineering the mechanical and molecular pathways in stem cell morphogenesis. J Tissue Eng Regen Med 2013; 9:169-73. [DOI: 10.1002/term.1672] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2011] [Revised: 10/05/2012] [Accepted: 11/05/2012] [Indexed: 01/28/2023]
Affiliation(s)
- Kai Lu
- Institute for Integrated Cell-Material Sciences; Kyoto University; Japan
| | - Richard Gordon
- Embryogenesis Center; Gulf Specimen Marine Laboratory; Panacea FL 32346 USA
| | - Tong Cao
- Stem Cell Laboratory, Faculty of Dentistry; National University of Singapore
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319
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Velasquillo C, Galue EA, Rodriquez L, Ibarra C, Ibarra-Ibarra LG. Skin 3D Bioprinting. Applications in Cosmetology. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/jcdsa.2013.31a012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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320
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Mota C, Puppi D, Chiellini F, Chiellini E. Additive manufacturing techniques for the production of tissue engineering constructs. J Tissue Eng Regen Med 2012; 9:174-90. [PMID: 23172792 DOI: 10.1002/term.1635] [Citation(s) in RCA: 156] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Revised: 08/02/2012] [Accepted: 09/27/2012] [Indexed: 02/06/2023]
Abstract
'Additive manufacturing' (AM) refers to a class of manufacturing processes based on the building of a solid object from three-dimensional (3D) model data by joining materials, usually layer upon layer. Among the vast array of techniques developed for the production of tissue-engineering (TE) scaffolds, AM techniques are gaining great interest for their suitability in achieving complex shapes and microstructures with a high degree of automation, good accuracy and reproducibility. In addition, the possibility of rapidly producing tissue-engineered constructs meeting patient's specific requirements, in terms of tissue defect size and geometry as well as autologous biological features, makes them a powerful way of enhancing clinical routine procedures. This paper gives an extensive overview of different AM techniques classes (i.e. stereolithography, selective laser sintering, 3D printing, melt-extrusion-based techniques, solution/slurry extrusion-based techniques, and tissue and organ printing) employed for the development of tissue-engineered constructs made of different materials (i.e. polymeric, ceramic and composite, alone or in combination with bioactive agents), by highlighting their principles and technological solutions.
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Affiliation(s)
- Carlos Mota
- Laboratory of Bioactive Polymeric Materials for Biomedical and Environmental Applications (BIOLab), UdR-INSTM, Department of Chemistry and Industrial Chemistry, University of Pisa, San Piero a Grado, (Pi), Italy
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321
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Yan J, Huang Y, Chrisey DB. Laser-assisted printing of alginate long tubes and annular constructs. Biofabrication 2012; 5:015002. [DOI: 10.1088/1758-5082/5/1/015002] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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322
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Ahn S, Lee H, Bonassar LJ, Kim G. Cells (MC3T3-E1)-Laden Alginate Scaffolds Fabricated by a Modified Solid-Freeform Fabrication Process Supplemented with an Aerosol Spraying. Biomacromolecules 2012; 13:2997-3003. [DOI: 10.1021/bm3011352] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- SeungHyun Ahn
- Department of Mechanical Engineering, Chosun University, GwangJu, South Korea
| | - HyeongJin Lee
- Department of Mechanical Engineering, Chosun University, GwangJu, South Korea
| | - Lawrence J. Bonassar
- Department of Biomedical Engineering, Cornell University, Weill Hall, Ithaca, New York, United
States
| | - GeunHyung Kim
- Department of Mechanical Engineering, Chosun University, GwangJu, South Korea
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323
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Ahn S, Lee H, Puetzer J, Bonassar LJ, Kim G. Fabrication of cell-laden three-dimensional alginate-scaffolds with an aerosol cross-linking process. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm33749e] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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