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Chauhan A, Alam MA, Kaur A, Malviya R. Advancements and Utilizations of Scaffolds in Tissue Engineering and Drug Delivery. Curr Drug Targets 2023; 24:13-40. [PMID: 36221880 DOI: 10.2174/1389450123666221011100235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 03/02/2022] [Accepted: 03/09/2022] [Indexed: 11/22/2022]
Abstract
The drug development process requires a thorough understanding of the scaffold and its three-dimensional structure. Scaffolding is a technique for tissue engineering and the formation of contemporary functioning tissues. Tissue engineering is sometimes referred to as regenerative medicine. They also ensure that drugs are delivered with precision. Information regarding scaffolding techniques, scaffolding kinds, and other relevant facts, such as 3D nanostructuring, are discussed in depth in this literature. They are specific and demonstrate localized action for a specific reason. Scaffold's acquisition nature and flexibility make it a new drug delivery technology with good availability and structural parameter management.
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Affiliation(s)
- Akash Chauhan
- Department of Pharmacy, School of Medical and Allied Sciences, Galgotias University, Greater Noida, Uttar Pradesh, India
| | - Md Aftab Alam
- Department of Pharmacy, School of Medical and Allied Sciences, Galgotias University, Greater Noida, Uttar Pradesh, India
| | - Awaneet Kaur
- Department of Pharmacy, School of Medical and Allied Sciences, Galgotias University, Greater Noida, Uttar Pradesh, India
| | - Rishabha Malviya
- Department of Pharmacy, School of Medical and Allied Sciences, Galgotias University, Greater Noida, Uttar Pradesh, India
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2
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Elia E, Brownell D, Chabaud S, Bolduc S. Tissue Engineering for Gastrointestinal and Genitourinary Tracts. Int J Mol Sci 2022; 24:ijms24010009. [PMID: 36613452 PMCID: PMC9820091 DOI: 10.3390/ijms24010009] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 12/10/2022] [Accepted: 12/14/2022] [Indexed: 12/24/2022] Open
Abstract
The gastrointestinal and genitourinary tracts share several similarities. Primarily, these tissues are composed of hollow structures lined by an epithelium through which materials need to flow with the help of peristalsis brought by muscle contraction. In the case of the gastrointestinal tract, solid or liquid food must circulate to be digested and absorbed and the waste products eliminated. In the case of the urinary tract, the urine produced by the kidneys must flow to the bladder, where it is stored until its elimination from the body. Finally, in the case of the vagina, it must allow the evacuation of blood during menstruation, accommodate the male sexual organ during coitus, and is the natural way to birth a child. The present review describes the anatomy, pathologies, and treatments of such organs, emphasizing tissue engineering strategies.
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Affiliation(s)
- Elissa Elia
- Centre de Recherche en Organogénèse Expérimentale/LOEX, Regenerative Medicine Division, CHU de Québec-Université Laval Research Center, Québec, QC G1J 1Z4, Canada
| | - David Brownell
- Centre de Recherche en Organogénèse Expérimentale/LOEX, Regenerative Medicine Division, CHU de Québec-Université Laval Research Center, Québec, QC G1J 1Z4, Canada
| | - Stéphane Chabaud
- Centre de Recherche en Organogénèse Expérimentale/LOEX, Regenerative Medicine Division, CHU de Québec-Université Laval Research Center, Québec, QC G1J 1Z4, Canada
| | - Stéphane Bolduc
- Centre de Recherche en Organogénèse Expérimentale/LOEX, Regenerative Medicine Division, CHU de Québec-Université Laval Research Center, Québec, QC G1J 1Z4, Canada
- Department of Surgery, Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
- Correspondence: ; Tel.: +1-418-525-4444 (ext. 42282)
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Haghdel M, Imanieh MH, Hosseinpour H, Ghasemi Y, Alizadeh AA. Development of Bio-artificial Esophageal Tissue Engineering Utilization for Circumferential Lesion Transplantation: A Narrative Review. IRANIAN JOURNAL OF MEDICAL SCIENCES 2022; 47:406-421. [PMID: 36117582 PMCID: PMC9445863 DOI: 10.30476/ijms.2021.89194.1991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 02/12/2021] [Accepted: 04/06/2021] [Indexed: 11/19/2022]
Abstract
The esophagus is the gastrointestinal tract's primary organ that transfers bolus into the stomach with peristaltic motion. Therefore, its lesions cause a significant disturbance in the nutrition and digestive system. Esophageal disease treatment sometimes requires surgical procedures that involve removal and circumferential full-thickness replacement. Unlike other organs, the esophagus has a limited regeneration ability and cannot be transplanted from donors. There are various methods of restoring the esophageal continuity; however, they are associated with certain flaws that lead to a non-functional recovery. As an exponentially growing science, tissue engineering has become a leading technique for the development of tissue replacement to repair damaged esophageal segments. Scaffold plays a significant role in the process of tissue engineering, as it acts as a template for the regeneration of growing tissue. A variety of scaffolds have been studied to replace the esophagus. Due to the many tissue quality challenges, the results are still inadequate and need to be improved. The success of esophageal tissue regeneration will finally depend on the scaffold's capability to mimic natural tissue properties and provide a qualified environment for regeneration. Thereby, scaffold fabrication techniques are fundamental. This article reviews the recent developments in esophageal tissue engineering for the treatment of circumferential lesions based on scaffold biomaterial engineering approaches.
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Affiliation(s)
- Mobin Haghdel
- Department of Tissue Engineering, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Hadi Imanieh
- Department of Pediatrics Gastroenterology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Hamidreza Hosseinpour
- Department of Surgery, Shiraz Laparoscopic Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Younes Ghasemi
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ali Akbar Alizadeh
- Department of Tissue Engineering, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
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Ramaraju H, Sferra SR, Kunisaki SM, Hollister SJ. Finite element analysis of esophageal atresia repair with biodegradable polymer sleeves. J Mech Behav Biomed Mater 2022; 133:105349. [DOI: 10.1016/j.jmbbm.2022.105349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 06/20/2022] [Accepted: 06/28/2022] [Indexed: 10/17/2022]
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Xu R, Fang X, Wu S, Wang Y, Zhong Y, Hou R, Zhang L, Shao L, Pang Q, Zhang J, Cui X, Zuo R, Yao L, Zhu Y. Development and Prospect of Esophageal Tissue Engineering. Front Bioeng Biotechnol 2022; 10:853193. [PMID: 35252159 PMCID: PMC8892191 DOI: 10.3389/fbioe.2022.853193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 01/31/2022] [Indexed: 11/13/2022] Open
Abstract
Currently, patients with esophageal cancer, especially advanced patients, usually use autologous tissue for esophageal alternative therapy. However, an alternative therapy is often accompanied by serious complications such as ischemia and leakage, which seriously affect the prognosis of patients. Tissue engineering has been widely studied as one of the ideal methods for the treatment of esophageal cancer. In view of the complex multi-layer structure of the natural esophagus, how to use the tissue engineering method to design the scaffold with structure and function matching with the natural tissue is the principle that the tissue engineering method must follow. This article will analyze and summarize the construction methods, with or without cells, and repair effects of single-layer scaffold and multi-layer scaffold. Especially in the repair of full-thickness and circumferential esophageal defects, the flexible design method and the binding force between the layers of the scaffold are very important. In short, esophageal tissue engineering technology has broad prospects and plays a more and more important role in the treatment of esophageal diseases.
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Affiliation(s)
- Rui Xu
- The Affiliated Hospital of Medical School, Ningbo University, Ningbo, China
- School of Medicine, Ningbo University, Ningbo, China
| | - Xinnan Fang
- School of Medicine, Ningbo University, Ningbo, China
| | - Shengqian Wu
- School of Medicine, Ningbo University, Ningbo, China
| | - Yiyin Wang
- School of Medicine, Ningbo University, Ningbo, China
| | - Yi Zhong
- School of Medicine, Ningbo University, Ningbo, China
| | - Ruixia Hou
- The Affiliated Hospital of Medical School, Ningbo University, Ningbo, China
- School of Medicine, Ningbo University, Ningbo, China
- *Correspondence: Ruixia Hou,
| | - Libing Zhang
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, China
| | - Lei Shao
- School of Medicine, Ningbo University, Ningbo, China
| | - Qian Pang
- School of Medicine, Ningbo University, Ningbo, China
| | - Jian Zhang
- The Affiliated Lihuili Hospital, Ningbo University, Ningbo, China
| | - Xiang Cui
- The Affiliated Lihuili Hospital, Ningbo University, Ningbo, China
| | - Rongyue Zuo
- The Affiliated Hospital of Medical School, Ningbo University, Ningbo, China
| | - Liwei Yao
- The Affiliated Hospital of Medical School, Ningbo University, Ningbo, China
| | - Yabin Zhu
- School of Medicine, Ningbo University, Ningbo, China
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Biological properties of a bionic scaffold for esophageal tissue engineering research. Colloids Surf B Biointerfaces 2019; 179:208-217. [PMID: 30959233 DOI: 10.1016/j.colsurfb.2019.03.072] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 03/24/2019] [Accepted: 03/31/2019] [Indexed: 12/26/2022]
Abstract
Polyurethane is a good matrix material with wide application prospects in tissue engineering because of its adjustable and mechanical properties. A novel biodegradable crosslinked poly(ester urethane) (CPU) with flexible poly(caprolactone) (PCL) and hydrophilic poly(ethylene glycol) (PEG) components has been synthesized using a ferric iron catalyst in our laboratory. In the present study, to promote the interaction between the CPU material and cells, the material was superficially modified by silk fibroin (SF) grafting using an aminolysis and glutaraldehyde crosslinking method to achieve a biocompatible material, CPU-SF. Considering the esophageal-specific architecture, three types of scaffolds were fabricated. S1 was a CPU-SF channel (200 μm in diameter and 30 μm in depth with 30 μm of wall thickness) to support muscle regeneration; S2 was the decellularized matrix of the esophageal mucosa/submucosa obtained by enzyme treatment; and S3 was a combination of S1 and S2, aiming to promote esophageal regeneration with histological structure and function. The biological properties and functions of the materials and scaffolds were investigated by qualitative and quantitative analyses using scanning electron microscopy, immunofluorescence staining, cell adhesion and proliferation measurements, and western blotting technology. The results showed that esophageal smooth muscle cells (SMCs) and epithelial cells (ECs) were very well supported by the scaffolds. In particular, SMCs exhibited guided directional growth and ECs infiltrated the acellular mucosa with retained biological functions when co-cultured on the composite scaffold S3. These findings suggest that the composite bionic scaffold will be a good alternative for esophageal replacement.
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Pellegrino L, Cocchiola R, Francolini I, Lopreiato M, Piozzi A, Zanoni R, Scotto d'Abusco A, Martinelli A. Taurine grafting and collagen adsorption on PLLA films improve human primary chondrocyte adhesion and growth. Colloids Surf B Biointerfaces 2017; 158:643-649. [PMID: 28763771 DOI: 10.1016/j.colsurfb.2017.07.047] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 06/15/2017] [Accepted: 07/19/2017] [Indexed: 10/19/2022]
Abstract
Biocompatible and degradable poly(α-hydroxy acids) are one of the most widely used materials in scaffolds for tissue engineering. Nevertheless, they often need surface modification to improve interaction with cells. Aminolysis is a common method to increase the polymer hydrophilicity and to introduce surface functional groups, able to covalently link or absorb, through electrostatic interaction, bioactive molecules or macromolecules. For this purpose, multi-functional amines, such as diethylenediamine or hexamethylenediamine are used. However, common drawbacks are their toxicity and the introduction of positive charges on the surface. Thus, these kind of modified surfaces are unable to link directly proteins, such as collagens, a promising substrate for many cell types, in particular chondrocytes and osteoblasts. In this work, poly(L-lactide) (PLLA) film surface was labelled with negatively charged sulfonate groups by grafting taurine (TAU) through an aminolysis reaction. The novel modified PLLA film (PLLA-TAU) was able to interact directly with collagen. The reaction was carried out in mild conditions by using a solution of tetrabutylammonium salt of TAU in methanol. ATR-FTIR, XPS and contact angle measurements were used to verify the outcome of the reaction. After the exchange of tetrabutylamonium cation with Na+, collagen was absorbed on the TAU grafted PLLA film (PLLA-TAU-COLL). In vitro biological tests with human primary chondrocytes showed that PLLA-TAU and PLLA-TAU-COLL improved cell viability and adhesion, compared to the unmodified polymer, suggesting that these modifications make PLLA substrate suitable for cartilage repair.
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Affiliation(s)
- Luca Pellegrino
- Department of Chemistry, Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy
| | - Rossana Cocchiola
- Department of Biochemical Sciences, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy
| | - Iolanda Francolini
- Department of Chemistry, Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy
| | - Mariangela Lopreiato
- Department of Biochemical Sciences, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy
| | - Antonella Piozzi
- Department of Chemistry, Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy
| | - Robertino Zanoni
- Department of Chemistry, Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy
| | - Anna Scotto d'Abusco
- Department of Biochemical Sciences, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy
| | - Andrea Martinelli
- Department of Chemistry, Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy.
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Lee E, Milan A, Urbani L, De Coppi P, Lowdell MW. Decellularized material as scaffolds for tissue engineering studies in long gap esophageal atresia. Expert Opin Biol Ther 2017; 17:573-584. [PMID: 28303723 DOI: 10.1080/14712598.2017.1308482] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
INTRODUCTION Esophageal atresia refers to an anomaly in foetal development in which the esophagus terminates in a blind end. Whilst surgical correction is achievable in most patients, when a long gap is present it still represents a major challenge associated with higher morbidity and mortality. In this context, tissue engineering could represent a successful alternative to restore oesophageal function and structure. Naturally derived biomaterials made of decellularized tissues retain native extracellular matrix architecture and composition, providing a suitable bed for the anchorage and growth of relevant cell types. Areas covered: This review outlines the various strategies and challenges in esophageal tissue engineering, highlighting the evolution of ideas in the development of decellularized scaffolds for clinical use. It explores the interplay between clinical needs, ethical dilemmas, and manufacturing challenges in the development of a tissue engineered decellularized scaffold for oesophageal atresia. Expert opinion: Current progress on oesophageal tissue engineering has enabled effective repair of patch defects, whilst the development of a full circumferential construct remains a challenge. Despite the different approaches available and the improvements achieved, a gold standard for fully functional tissue engineered oesophageal constructs has not been defined yet.
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Affiliation(s)
- Esmond Lee
- a Centre for Cell, Gene & Tissue Therapeutics , Royal Free Hospital , London , UK.,b Institute for Stem Cell Biology and Regenerative Medicine , Stanford University , Stanford , CA , USA.,c Bioprocessing Technology Institute, Agency for Science Technology and Research (A*STAR) , Singapore
| | - Anna Milan
- d Stem Cells and Regenerative Medicine Section , UCL Great Ormond Street Institute of Child Health , London , UK
| | - Luca Urbani
- d Stem Cells and Regenerative Medicine Section , UCL Great Ormond Street Institute of Child Health , London , UK
| | - Paolo De Coppi
- d Stem Cells and Regenerative Medicine Section , UCL Great Ormond Street Institute of Child Health , London , UK
| | - Mark W Lowdell
- a Centre for Cell, Gene & Tissue Therapeutics , Royal Free Hospital , London , UK
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Walthers CM, Lyall CJ, Nazemi AK, Rana PV, Dunn JCY. Collagen and heparan sulfate coatings differentially alter cell proliferation and attachment in vitro and in vivo. TECHNOLOGY 2016; 4:159-169. [PMID: 28713850 PMCID: PMC5507618 DOI: 10.1142/s2339547816400033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Tissue engineering is an innovative field of research applied to treat intestinal diseases. Engineered smooth muscle requires dense smooth muscle tissue and robust vascularization to support contraction. The purpose of this study was to use heparan sulfate (HS) and collagen coatings to increase the attachment of smooth muscle cells (SMCs) to scaffolds and improve their survival after implantation. SMCs grown on biologically coated scaffolds were evaluated for maturity and cell numbers after 2, 4 and 6 weeks in vitro and both 2 and 6 weeks in vivo. Implants were also assessed for vascularization. Collagen-coated scaffolds increased attachment, growth and maturity of SMCs in culture. HS-coated implants increased angiogenesis after 2 weeks, contributing to an increase in SMC survival and growth compared to HS-coated scaffolds grown in vitro. The angiogenic effects of HS may be useful for engineering intestinal smooth muscle.
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Affiliation(s)
- Christopher M Walthers
- Department of Bioengineering and Department of Surgery, University of California, Los Angeles, 10833 Le Conte Avenue, Los Angeles, CA 90095, USA
| | - Chase J Lyall
- Department of Bioengineering and Department of Surgery, University of California, Los Angeles, 10833 Le Conte Avenue, Los Angeles, CA 90095, USA
| | - Alireza K Nazemi
- Department of Bioengineering and Department of Surgery, University of California, Los Angeles, 10833 Le Conte Avenue, Los Angeles, CA 90095, USA
| | - Puneet V Rana
- Department of Bioengineering and Department of Surgery, University of California, Los Angeles, 10833 Le Conte Avenue, Los Angeles, CA 90095, USA
| | - James C Y Dunn
- Department of Bioengineering and Department of Surgery, University of California, Los Angeles, 10833 Le Conte Avenue, Los Angeles, CA 90095, USA
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Hou L, Gong C, Zhu Y. In vitro construction and in vivo regeneration of esophageal bilamellar muscle tissue. J Biomater Appl 2016; 30:1373-84. [DOI: 10.1177/0885328215627585] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
In order to induce esophageal muscle cells’ orientation, the silicon wafer with prototype 1 and prototype 2 was designed. Prototype 1 has micro-channels of 200 µm width and 30 µm depth with 30 µm wide wall as the interval. Prototype 2 has channels of 100 µm width and 30 µm depth with a discontinuous wall which has 30 µm gap for each 100 µm channel. The poly(ester urethane) scaffolds with pattern prototype 1 and prototype 2 were fabricated using solution casting method and abbreviated as PU1 and PU2, respectively. Silk fibroin was grafted individually on PU1 and PU2 surface (PU1-SF, PU2-SF) using our previous protocol, aiming at improving scaffolds’ biocompatibility. The primary esophageal smooth muscle cell was seeded to evaluate the scaffolds’ cytocompatibility in vitro. Characterizations like MTT assay, immunocytochemistry, scanning electron microscope, and Western blotting were applied. After that, poly(ester urethane) scaffolds with double patterns, prototype 1 on the exterior, and prototype 2 in the lumen were implanted into the rabbit esophagous to test the regeneration of the muscle tissue. Results from these preliminary tests showed that the growth and differentiation of primary smooth muscle cells were promoted, but also the muscle tissue with endocircular and exolongitudinal architecture was in regenerating, against non-constitution in the animals without the patterned scaffold or with poly(ester urethane) plane membrane at the defaulted sites. This micro-channel pattern together with silk fibroin grafting and vascular endothelial growth factor coating greatly promoted the regeneration of esophageal muscle with normal histological structure.
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Affiliation(s)
- Lei Hou
- The Medical School, Ningbo University, Ningbo, China
| | | | - Yabin Zhu
- The Medical School, Ningbo University, Ningbo, China
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Poghosyan T, Catry J, Luong-Nguyen M, Bruneval P, Domet T, Arakelian L, Sfeir R, Michaud L, Vanneaux V, Gottrand F, Larghero J, Cattan P. Esophageal tissue engineering: Current status and perspectives. J Visc Surg 2015; 153:21-9. [PMID: 26711880 DOI: 10.1016/j.jviscsurg.2015.11.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Tissue engineering, which consists of the combination and in vivo implantation of elements required for tissue remodeling toward a specific organ phenotype, could be an alternative for classical techniques of esophageal replacement. The current hybrid approach entails creation of an esophageal substitute composed of an acellular matrix and autologous epithelial and muscle cells provides the most successful results. Current research is based on the use of mesenchymal stem cells, whose potential for differentiation and proangioogenic, immune-modulator and anti-inflammatory properties are important assets. In the near future, esophageal substitutes could be constructed from acellular "intelligent matrices" that contain the molecules necessary for tissue regeneration; this should allow circumvention of the implantation step and still obtain standardized in vivo biological responses. At present, tissue engineering applications to esophageal replacement are limited to enlargement plasties with absorbable, non-cellular matrices. Nevertheless, the application of existing clinical techniques for replacement of other organs by tissue engineering in combination with a multiplication of translational research protocols for esophageal replacement in large animals should soon pave the way for health agencies to authorize clinical trials.
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Affiliation(s)
- T Poghosyan
- Service de chirurgie digestive, oncologique et métabolique, hôpital Ambroise-Paré, AP-HP, 92100 Boulogne-Billancourt, France; CIC de biothérapies, Inserm UMR 1160, institut universitaire d'hématologie, hôpital Saint-Louis, 1, avenue Claude-Vellefaux, 75010 Paris, France
| | - J Catry
- CIC de biothérapies, Inserm UMR 1160, institut universitaire d'hématologie, hôpital Saint-Louis, 1, avenue Claude-Vellefaux, 75010 Paris, France; Service de chirurgie générale, digestive et endocrinienne, hôpital Saint-Louis, AP-HP, 75010 Paris, France
| | - M Luong-Nguyen
- CIC de biothérapies, Inserm UMR 1160, institut universitaire d'hématologie, hôpital Saint-Louis, 1, avenue Claude-Vellefaux, 75010 Paris, France; Service de chirurgie générale, digestive et endocrinienne, hôpital Saint-Louis, AP-HP, 75010 Paris, France
| | - P Bruneval
- Service d'anatomopathologie, hôpital européen Georges-Pompidou, AP-HP, 75015 Paris, France
| | - T Domet
- CIC de biothérapies, Inserm UMR 1160, institut universitaire d'hématologie, hôpital Saint-Louis, 1, avenue Claude-Vellefaux, 75010 Paris, France; Unité de thérapie cellulaire, hôpital Saint-Louis, AP-HP, 75010 Paris, France
| | - L Arakelian
- CIC de biothérapies, Inserm UMR 1160, institut universitaire d'hématologie, hôpital Saint-Louis, 1, avenue Claude-Vellefaux, 75010 Paris, France
| | - R Sfeir
- Centre de référence des affections congénitales et malformatives de l'œsophage, CHRU de Lille, 59000 Lille, France
| | - L Michaud
- Centre de référence des affections congénitales et malformatives de l'œsophage, CHRU de Lille, 59000 Lille, France
| | - V Vanneaux
- CIC de biothérapies, Inserm UMR 1160, institut universitaire d'hématologie, hôpital Saint-Louis, 1, avenue Claude-Vellefaux, 75010 Paris, France; Unité de thérapie cellulaire, hôpital Saint-Louis, AP-HP, 75010 Paris, France
| | - F Gottrand
- Centre de référence des affections congénitales et malformatives de l'œsophage, CHRU de Lille, 59000 Lille, France
| | - J Larghero
- CIC de biothérapies, Inserm UMR 1160, institut universitaire d'hématologie, hôpital Saint-Louis, 1, avenue Claude-Vellefaux, 75010 Paris, France; Unité de thérapie cellulaire, hôpital Saint-Louis, AP-HP, 75010 Paris, France
| | - P Cattan
- CIC de biothérapies, Inserm UMR 1160, institut universitaire d'hématologie, hôpital Saint-Louis, 1, avenue Claude-Vellefaux, 75010 Paris, France; Service de chirurgie générale, digestive et endocrinienne, hôpital Saint-Louis, AP-HP, 75010 Paris, France.
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12
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Zilberman M, Egozi D, Shemesh M, Keren A, Mazor E, Baranes-Zeevi M, Goldstein N, Berdicevsky I, Gilhar A, Ullmann Y. Hybrid wound dressings with controlled release of antibiotics: Structure-release profile effects and in vivo study in a guinea pig burn model. Acta Biomater 2015; 22:155-63. [PMID: 25922303 DOI: 10.1016/j.actbio.2015.04.029] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Revised: 04/18/2015] [Accepted: 04/21/2015] [Indexed: 11/17/2022]
Abstract
Over the last decades, wound dressings have evolved from a crude traditional gauze dressing to tissue-engineered scaffolds. Many types of wound dressing formats are commercially available or have been investigated. We developed and studied hybrid bilayer wound dressings which combine a drug-loaded porous poly(dl-lactic-co-glycolic acid) top layer with a spongy collagen sublayer. Such a structure is very promising because it combines the advantageous properties of both layers. The antibiotic drug gentamicin was incorporated into the top layer for preventing and/or defeating infections. In this study, we examined the effect of the top layer's structure on the gentamicin release profile and on the resulting in vivo wound healing. The latter was tested on a guinea pig burn model, compared to the neutral non-adherent dressing material Melolin® (Smith & Nephew) and Aquacel® Ag (ConvaTec). The release kinetics of gentamicin from the various studied formulations exhibited burst release values between 8% and 38%, followed by a drug elution rate that decreased with time and lasted for at least 7 weeks. The hybrid dressing, with relatively slow gentamicin release, enabled the highest degree of wound healing (28%), which is at least double that obtained by the other dressing formats (8-12%). It resulted in the lowest degree of wound contraction and a relatively low amount of inflammatory cells compared to the controls. This dressing was found to be superior to hybrid wound dressings with fast gentamicin release and to the neat hybrid dressing without drug release. Since this dressing exhibited promising results and does not require frequent bandage changes, it offers a potentially valuable concept for treating large infected burns.
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Affiliation(s)
- Meital Zilberman
- Dept. of Biomedical Engineering, Tel-Aviv University, Tel-Aviv 69978, Israel.
| | - Dana Egozi
- Dept. of Plastic Surgery, Kaplan Medical Center, Rehovot, Israel
| | - Maoz Shemesh
- Dept. of Biomedical Engineering, Tel-Aviv University, Tel-Aviv 69978, Israel
| | - Aviad Keren
- Faculty of Medicine, Technion - Israel Institute of Technology, Haifa 32000, Israel; Dept. of Plastic Surgery and the Burn Unit, Rambam Health Care Campus, Haifa, Israel
| | - Eytan Mazor
- Dept. of Biomedical Engineering, Tel-Aviv University, Tel-Aviv 69978, Israel
| | - Maya Baranes-Zeevi
- Dept. of Biomedical Engineering, Tel-Aviv University, Tel-Aviv 69978, Israel
| | - Nyra Goldstein
- Faculty of Medicine, Technion - Israel Institute of Technology, Haifa 32000, Israel; Dept. of Plastic Surgery and the Burn Unit, Rambam Health Care Campus, Haifa, Israel
| | - Israela Berdicevsky
- Faculty of Medicine, Technion - Israel Institute of Technology, Haifa 32000, Israel
| | - Amos Gilhar
- Faculty of Medicine, Technion - Israel Institute of Technology, Haifa 32000, Israel
| | - Yehuda Ullmann
- Faculty of Medicine, Technion - Israel Institute of Technology, Haifa 32000, Israel; Dept. of Plastic Surgery and the Burn Unit, Rambam Health Care Campus, Haifa, Israel
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13
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Hou L, Jin J, Lv J, Chen L, Zhu Y, Liu X. Constitution and in vivo test of micro-porous tubular scaffold for esophageal tissue engineering. J Biomater Appl 2015. [DOI: 10.1177/0885328215596285] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Current clinical techniques in treating long-gap esophageal defects often lead to complications and high morbidity. Aiming at long-gap synthetic esophageal substitute, we had synthesized a biodegradable copolymer, poly(L-lactide-co-caprolactone) (PLLC), with low glass transition temperature. In this work, we developed a tubular PLLC porous scaffold using a self-designed tubular mold and thermal induced phase separation (TIPS) method. In order to enhance the interaction between tissue and scaffold, fibrin, a natural fibrous protein derived from blood fibrinogen, was coated on the scaffold circumferential surface. The fibrin density was measured to be 1.23 ± 0.04 mg/cm2. Primary epithelial cell culture demonstrated the improved in vitro biocompatibility. In animal study with partial scaffold implantation, in situ mucosa regeneration was observed along the degradation of the scaffold. These indicate that fibrin incorporated PLLC scaffold can greatly improve epithelial regeneration in esophagus repair, therefore serve as a good candidate for long-term evaluation of post-implantation at excision site.
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Affiliation(s)
- Lei Hou
- The Medical School, Ningbo University, Ningbo, China
| | - Jiachang Jin
- The Medical School, Ningbo University, Ningbo, China
| | - Jingjing Lv
- The Medical School, Ningbo University, Ningbo, China
| | - Ling Chen
- The Medical School, Ningbo University, Ningbo, China
| | - Yabin Zhu
- The Medical School, Ningbo University, Ningbo, China
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14
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Londono R, Badylak SF. Regenerative Medicine Strategies for Esophageal Repair. TISSUE ENGINEERING PART B-REVIEWS 2015; 21:393-410. [PMID: 25813694 DOI: 10.1089/ten.teb.2015.0014] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Pathologies that involve the structure and/or function of the esophagus can be life-threatening. The esophagus is a complex organ comprising nonredundant tissue that does not have the ability to regenerate. Currently available interventions for esophageal pathology have limited success and are typically associated with significant morbidity. Hence, there is currently an unmet clinical need for effective methods of esophageal repair. The present article presents a review of esophageal disease along with the anatomic and functional consequences of each pathologic process, the shortcomings associated with currently available therapies, and the latest advancements in the field of regenerative medicine with respect to strategies for esophageal repair from benchtop to bedside.
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Affiliation(s)
- Ricardo Londono
- 1 McGowan Institute for Regenerative Medicine, University of Pittsburgh , Pittsburgh, Pennsylvania.,2 School of Medicine, University of Pittsburgh , Pittsburgh, Pennsylvania
| | - Stephen F Badylak
- 1 McGowan Institute for Regenerative Medicine, University of Pittsburgh , Pittsburgh, Pennsylvania.,3 Department of Bioengineering, University of Pittsburgh , Pittsburgh, Pennsylvania.,4 Department of Surgery, University of Pittsburgh , Pittsburgh, Pennsylvania
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15
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Shemesh M, Zilberman M. Structure-property effects of novel bioresorbable hybrid structures with controlled release of analgesic drugs for wound healing applications. Acta Biomater 2014; 10:1380-91. [PMID: 24316366 DOI: 10.1016/j.actbio.2013.11.025] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Revised: 11/19/2013] [Accepted: 11/26/2013] [Indexed: 10/25/2022]
Abstract
Over the last decades, wound dressings have developed from the traditional gauze dressing to tissue-engineered scaffolds. A wound dressing should ideally maintain a moist environment at the wound surface, allow gas exchange, act as a barrier to micro-organisms and remove excess exudates. In order to provide these characteristics, we developed and studied bioresorbable hybrid structures which combine a synthetic porous drug-loaded top layer with a spongy collagen sublayer. The top layer, prepared using the freeze-drying of inverted emulsions technique, was loaded with the analgesic drugs ibuprofen or bupivacaine, for controlled release to the wound site. Our investigation focused on the effects of the emulsion's parameters on the microstructure and on the resulting drug-release profile, as well as on the physical and mechanical properties. The structure of the semi-occlusive top layer enables control over vapor transmission, in addition to strongly affecting the drug release profile. Release of the analgesic drugs lasted from several days to more than 100 days. Higher organic:aqueous phase ratios and polymer contents reduced the burst release of both drugs and prolonged their release due to a lower porosity. The addition of reinforcing fibers to this layer improved the mechanical properties. Good binding of the two components, PDLGA and collagen, was achieved due to our special method of preparation, which enables a third interfacial layer in which both materials are mixed to create an "interphase". These new PDLGA/collagen structures demonstrated a promising potential for use in various wound healing applications.
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16
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Luc G, Durand M, Collet D, Guillemot F, Bordenave L. Esophageal tissue engineering. Expert Rev Med Devices 2014; 11:225-41. [PMID: 24387697 DOI: 10.1586/17434440.2014.870470] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Esophageal tissue engineering is still in an early state, and ideal methods have not been developed. Since the beginning of the 20th century, advances have been made in the materials that can be used to produce an esophageal substitute. Three approaches to scaffold-based tissue engineering have yielded good results. The first development concerned non-absorbable constructs based on silicone and collagen. The need to remove the silicone tube is the main disadvantage of this material. Polymeric absorbable scaffolds have been used since the 1990s. The main polymeric material used is poly (glycolic) acid combined with collagen. The problem of stenosis remains prevalent in most studies using an absorbable construct. Finally, decellularized scaffolds have been used since 2000. The promises of this new approach are unfulfilled. Indeed, stenosis occurs when the esophageal defect is circumferential regardless of the scaffold materials. Cell supplementation can decrease the rate of stenosis, but the type(s) of cells and their roles have not been defined. Finally, esophageal tissue engineering cannot provide a functional esophageal substitute, and further development is necessary prior to conducting human clinical studies.
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Affiliation(s)
- Guillaume Luc
- Department of Digestive Surgery, University Hospital Haut-Lévêque, Av de Magellan, 33604 Pessac cedex, France
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17
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Del Gaudio C, Baiguera S, Ajalloueian F, Bianco A, Macchiarini P. Are synthetic scaffolds suitable for the development of clinical tissue-engineered tubular organs? J Biomed Mater Res A 2013; 102:2427-47. [PMID: 23894109 DOI: 10.1002/jbm.a.34883] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Revised: 07/11/2013] [Accepted: 07/17/2013] [Indexed: 02/06/2023]
Abstract
Transplantation of tissues and organs is currently the only available treatment for patients with end-stage diseases. However, its feasibility is limited by the chronic shortage of suitable donors, the need for life-long immunosuppression, and by socioeconomical and religious concerns. Recently, tissue engineering has garnered interest as a means to generate cell-seeded three-dimensional scaffolds that could replace diseased organs without requiring immunosuppression. Using a regenerative approach, scaffolds made by synthetic, nonimmunogenic, and biocompatible materials have been developed and successfully clinically implanted. This strategy, based on a viable and ready-to-use bioengineered scaffold, able to promote novel tissue formation, favoring cell adhesion and proliferation, could become a reliable alternative to allotransplatation in the next future. In this article, tissue-engineered synthetic substitutes for tubular organs (such as trachea, esophagus, bile ducts, and bowel) are reviewed, including a discussion on their morphological and functional properties.
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Affiliation(s)
- Costantino Del Gaudio
- University of Rome "Tor Vergata", Department of Industrial Engineering, Intrauniversitary Consortium for Material Science and Technology (INSTM), Research Unit Tor Vergata, Rome, Italy
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18
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Shen Q, Shi P, Gao M, Yu X, Liu Y, Luo L, Zhu Y. Progress on materials and scaffold fabrications applied to esophageal tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:1860-6. [DOI: 10.1016/j.msec.2013.01.064] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Revised: 01/01/2013] [Accepted: 01/26/2013] [Indexed: 12/29/2022]
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19
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Wang X, Boire TC, Bronikowski C, Zachman AL, Crowder SW, Sung HJ. Decoupling polymer properties to elucidate mechanisms governing cell behavior. TISSUE ENGINEERING PART B-REVIEWS 2012; 18:396-404. [PMID: 22536977 DOI: 10.1089/ten.teb.2012.0011] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Determining how a biomaterial interacts with cells ("structure-function relationship") reflects its eventual clinical applicability. Therefore, a fundamental understanding of how individual material properties modulate cell-biomaterial interactions is pivotal to improving the efficacy and safety of clinically translatable biomaterial systems. However, due to the coupled nature of material properties, their individual effects on cellular responses are difficult to understand. Structure-function relationships can be more clearly understood by the effective decoupling of each individual parameter. In this article, we discuss three basic decoupling strategies: (1) surface modification, (2) cross-linking, and (3) combinatorial approaches (i.e., copolymerization and polymer blending). Relevant examples of coupled material properties are briefly reviewed in each section to highlight the need for improved decoupling methods. This follows with examples of more effective decoupling techniques, mainly from the perspective of three primary classes of synthetic materials: polyesters, polyethylene glycol, and polyacrylamide. Recent strides in decoupling methodologies, especially surface-patterning and combinatorial techniques, offer much promise in further understanding the structure-function relationships that largely govern the success of future advancements in biomaterials, tissue engineering, and drug delivery.
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Affiliation(s)
- Xintong Wang
- Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee 37235, USA
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20
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Characterization and hepatocytes adhesion of galactosylated poly(D,L-lactic-co-glycolic acid) surface. Macromol Res 2011. [DOI: 10.1007/s13233-012-0005-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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21
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Tan J, Chua C, Leong K, Chian K, Leong W, Tan L. Esophageal tissue engineering: An in-depth review on scaffold design. Biotechnol Bioeng 2011; 109:1-15. [DOI: 10.1002/bit.23323] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2011] [Revised: 08/29/2011] [Accepted: 08/31/2011] [Indexed: 01/29/2023]
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22
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Huber A, Badylak SF. Phenotypic changes in cultured smooth muscle cells: limitation or opportunity for tissue engineering of hollow organs? J Tissue Eng Regen Med 2011; 6:505-11. [PMID: 21755602 DOI: 10.1002/term.451] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2010] [Accepted: 05/23/2011] [Indexed: 01/27/2023]
Abstract
Smooth muscle cells (SMCs) are typically used as a cell source for the reconstruction of hollow organs by conventional tissue engineering techniques. However, the necessity for and advantage of the use of tissue-specific SMCs are unknown. The present study investigated the phenotypic changes that occur following isolation and in vitro expansion of rat SMC populations isolated from three different tissues: the aorta, oesophagus and urinary bladder. rSMCs were isolated by enzymatic dispersion and expanded by conventional cell culture techniques, yielding microscopically homogeneous populations. SMC phenotypes were monitored according to their expression of marker proteins during the first two passages. Two of the three SMC populations (rSMC-a and rSMC-e) showed a marked change in their marker protein profiles during the first two passages, which resulted in a homogeneous phenotype that was neither fully contractile nor fully synthetic. SMCs from the urinary bladder did not show such a shift. Differences between the three rSMC populations were observed with regard to proliferative activity and gene expression patterns, suggesting the retention of some tissue-specific cell characteristics. In summary, phenotypic changes in SMCs occur as a result of conventional cell isolation and expansion techniques, thus questioning the necessity for a tissue-specific cell source for regenerative medicine applications.
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Affiliation(s)
- Alexander Huber
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, PA, USA
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23
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Self-assembled composite matrix in a hierarchical 3-D scaffold for bone tissue engineering. Acta Biomater 2011; 7:2244-55. [PMID: 21195810 DOI: 10.1016/j.actbio.2010.12.031] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2010] [Revised: 12/27/2010] [Accepted: 12/29/2010] [Indexed: 11/21/2022]
Abstract
It is of high clinical relevance in bone tissue engineering that scaffolds promote a high seeding efficiency of cells capable of osteogenic differentiation, such as human bone marrow-derived mesenchymal stem cells (hMSCs). We evaluated the effects of a novel polycaprolactone (PCL) scaffold on hMSC seeding efficiency, proliferation, distribution and differentiation. Porous PCL meshes prepared by fused deposition modeling (FDM) were embedded in matrix of hyaluronic acid, methylated collagen and terpolymer via polyelectrolyte complex coacervation. Scaffolds were cultured statically and dynamically in osteogenic stimulation medium for up to 28 days. Compared to naked PCL scaffolds, embedded scaffolds provided a higher cell seeding efficiency (t-test, P<0.05), a more homogeneous cell distribution and more osteogenically differentiated cells, verified by a more pronounced gene expression of the bone markers alkaline phosphatase, osteocalcin, bone sialoprotein I and bone sialoprotein II. Dynamic culture resulted in higher amounts of DNA (day 14 and day 21) and calcium (day 21 and day 28), compared to static culture. Dynamic culture and the embedding synergistically enhanced the calcium deposition of hMSC on day 21 and day 28. This in vitro study provides evidence that hybrid scaffolds made from natural and synthetic polymers improve cellular seeding efficiency, proliferation, distribution and osteogenic differentiation.
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Wang Y, Zhao Z, Li Y, Li Y, Wu J, Fan X, Yang P. Up-regulated alpha-actin expression is associated with cell adhesion ability in 3-D cultured myocytes subjected to mechanical stimulation. Mol Cell Biochem 2009; 338:175-81. [PMID: 20024607 DOI: 10.1007/s11010-009-0351-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2009] [Accepted: 12/03/2009] [Indexed: 12/15/2022]
Abstract
This study was aimed to investigate the alteration of alpha-actin in three-dimensionally (3-D) cultured myocytes under cyclic tensile stress loading. Myocytes were collected from neonatal SD rat's lateral pterygoid muscle for primary cell culture. The third-passage cells were implanted and 3-D cultured in poly lactic-co-glycolic acid (PLGA) scaffold, and then subjected to cyclic tensile stress (0.5 Hz, 2,000 microstrain) for 0, 2, 4, 8, 12, and 24 h through a four-point bending strain system. The alpha-actin mRNA was investigated by semi-quantitative RT-PCR. The alpha-actin protein expression was examined by immunofluorescent cytochemistry, laser confocal scanning microscopy (LCSM), and image analysis technology. The dynamic adhesion of myocytes to PLGA scaffolds was investigated by fluorescence microscope and the viability of the myocytes was measured by MTT assay. After mechanical loading, the alpha-actin mRNA increased at 2 h and then declined. The alpha-actin protein expression kept increased until peaked at 12 h, but declined at 24 h. The time course changing of alpha-actin protein expression parallelled with that of cell adhesion ability. It is concluded that alpha-actin expression is probably associated with cell adhesion ability in myocytes subjected to mechanical stimulation.
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Affiliation(s)
- Yu Wang
- Department of Orthodontics, State Key Laboratory of Oral Diseases, West China Stomatology Hospital Sichuan University, Chengdu, Sichuan, People's Republic of China
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Sokolsky-Papkov M, Agashi K, Olaye A, Shakesheff K, Domb AJ. Polymer carriers for drug delivery in tissue engineering. Adv Drug Deliv Rev 2007; 59:187-206. [PMID: 17540473 DOI: 10.1016/j.addr.2007.04.001] [Citation(s) in RCA: 267] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2007] [Accepted: 04/19/2007] [Indexed: 01/18/2023]
Abstract
Growing demand for tissues and organs for transplantation and the inability to meet this need using by autogeneic (from the host) or allogeneic (from the same species) sources has led to the rapid development of tissue engineering as an alternative. Tissue engineering aims to replace or facilitate the regrowth of damaged or diseased tissue by applying a combination of biomaterials, cells and bioactive molecules. This review focuses on synthetic polymers that have been used for tissue growth scaffold fabrication and their applications in both cell and extracellular matrix support and controlling the release of cell growth and differentiation supporting drugs.
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Affiliation(s)
- Marina Sokolsky-Papkov
- Department of Medicinal Chemistry and Natural Products, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
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26
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Zhu Y, Chan-Park MB. Density quantification of collagen grafted on biodegradable polyester: Its application to esophageal smooth muscle cell. Anal Biochem 2007; 363:119-27. [PMID: 17292321 DOI: 10.1016/j.ab.2007.01.007] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2006] [Revised: 12/18/2006] [Accepted: 01/09/2007] [Indexed: 11/23/2022]
Abstract
An improved technique for quantification of collagen immobilized on polymeric substrates is needed as tissue engineering evolves. Current immobilized protein quantification methods are indirect, time-consuming, and/or inaccurate. In this study, Sirius red colorimetric microassay was shown to be feasible for quantifying the density of collagen immobilized on aminolyzed poly(L-lactic acid) (PLLA) surfaces using the specific bonding of Sirius dye to collagen. It offers a number of advantages over traditional methods, including direct staining, high sensitivity, and high stability of the dye. The detection limit is approximately 0.1 microg/cm(2), and the dynamic range is greater than 50. Sirius red dye has not been used previously for quantification of protein immobilized on polymers. The collagen densities achieved with each of the two crosslinking reagents investigated, namely glutaraldehyde (GA) and genipin, were compared. The latter is an alternative crosslinker derived from a traditional Chinese medicine. The collagen densities immobilized by the two reagents were measured to be similar. This was confirmed by the similar behaviors of esophageal primary smooth muscle cells (ESMCs) on these two modified PLLA membranes; collagen grafted with either coupler was found to greatly promote, to a similar extent, cell attachment and both short-term (4 days) and long-term (12 days) proliferation compared with unmodified PLLA. Smooth muscle cells on both modified membranes were stained to display contractile alpha-actin protein filaments.
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Affiliation(s)
- Yabin Zhu
- Biomedical Engineering Research Center, Nanyang Technological University, 639798 Singapore
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