共查询到20条相似文献,搜索用时 15 毫秒
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Fengbo Sun Xiaodan Sun Hetong Wang Chunxu Li Yu Zhao Jingjing Tian Yuanhua Lin 《International journal of molecular sciences》2022,23(10)
Polylactic acid–glycolic acid (PLGA) has been widely used in bone tissue engineering due to its favorable biocompatibility and adjustable biodegradation. 3D printing technology can prepare scaffolds with rich structure and function, and is one of the best methods to obtain scaffolds for bone tissue repair. This review systematically summarizes the research progress of 3D-printed, PLGA-based scaffolds. The properties of the modified components of scaffolds are introduced in detail. The influence of structure and printing method change in printing process is analyzed. The advantages and disadvantages of their applications are illustrated by several examples. Finally, we briefly discuss the limitations and future development direction of current 3D-printed, PLGA-based materials for bone tissue repair. 相似文献
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Tissue engineering has attracted significant attention since the 1980s, and the applications of tissue engineering have been expanding. To produce a cell-dense tissue, cell sheet technology has been studied as a promising strategy. Fundamental techniques involving tissue engineering are mainly introduced in this review. First, the technologies to fabricate a cell sheet were reviewed. Although temperature-responsive polymer-based technique was a trigger to establish and spread cell sheet technology, other methodologies for cell sheet fabrication have also been reported. Second, the methods to improve the function of the cell sheet were investigated. Adding electrical and mechanical stimulation on muscle-type cells, building 3D structures, and co-culturing with other cell species can be possible strategies for imitating the physiological situation under in vitro conditions, resulting in improved functions. Finally, culture methods to promote vasculogenesis in the layered cell sheets were introduced with in vivo, ex vivo, and in vitro bioreactors. We believe the present review that shows and compares the fundamental technologies and recent advances for cell-sheet-based tissue engineering should promote further development of tissue engineering. The development of cell sheet technology should promote many bioengineering applications. 相似文献
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组织工程中的生物材料是用于植入人体代替或修复人体组织和器官的一类特殊物资,当它嵌入人体内,可引起细胞的应答,结果产生具有生理功能的结构,用于组织工程的许多生物材料目前已被合成。本文主要从生物材料应用的角度,阐述了近年来这个领域的发展,同时提出组织工程中生物材料的两种模型表面。 相似文献
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可注射水凝胶在组织工程中应用进展 总被引:5,自引:1,他引:4
组织工程采用可注射原位形成水凝胶,与预成型支架相比具有特定的优势:能填充任意形状的缺损,并在很大程度上降低植入对机体组织的侵入性,且能与各种治疗药物混合。本文介绍了可注射凝胶形成过程及几种水凝胶系统.并以实例说明可注射水凝胶在组织工程中的应用。 相似文献
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Pawe Dec Andrzej Modrzejewski Andrzej Pawlik 《International journal of molecular sciences》2023,24(1)
The treatment of bone defects remains one of the major challenges in modern clinical practice. Nowadays, with the increased incidence of bone disease in an aging population, the demand for materials to repair bone defects continues to grow. Recent advances in the development of biomaterials offer new possibilities for exploring modern bone tissue engineering strategies. Both natural and synthetic biomaterials have been used for tissue repair. A variety of porous structures that promote cell adhesion, differentiation, and proliferation enable better implant integration with increasingly better physical properties. The selection of a suitable biomaterial on which the patient’s new tissue will grow is one of the key issues when designing a modern tissue scaffold and planning the entire treatment process. The purpose of this article is to present a comprehensive literature review of existing and novel biomaterials used in the surgical treatment of bone tissue defects. The materials described are divided into three groups—organic, inorganic, and synthetic polymers—taking into account current trends. This review highlights different types of existing and novel natural and synthetic materials used in bone tissue engineering and their advantages and disadvantages for bone defects regeneration. 相似文献
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Gordana Vunjak-Novakovic 《Israel journal of chemistry》2013,53(9-10):767-776
Bioengineering platforms that combine cell/tissue specific transport and signaling with precise control of culture conditions and multiparametric insights into the cell function are critical to our efforts to study tissue development, regeneration, and disease under conditions that predict the human in vivo context. Because living cells respond to the entire context of their environment – in vivo and in vitro, under normal and pathological conditions – the biological foundation of our bioengineering designs that is often described as the “biomimetic paradigm” is critical for unlocking the biological potential of the cells. This brief review focuses on some of the key principles for designing and using biologically inspired engineering platforms. Four examples are used to illustrate the designs and applications of biomimetic platforms. 相似文献
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Vincenzo Vindigni Roberta Cortivo Laura Iacobellis Giovanni Abatangelo Barbara Zavan 《International journal of molecular sciences》2009,10(7):2972-2985
Tissue engineering is a multidisciplinary field focused on in vitro reconstruction of mammalian tissues. In order to allow a similar three-dimensional organization of in vitro cultured cells, biocompatible scaffolds are needed. This need has provided immense momentum for research on “smart scaffolds” for use in cell culture. One of the most promising materials for tissue engineering and regenerative medicine is a hyaluronan derivative: a benzyl ester of hyaluronan (HYAFF®). HYAFF® can be processed to obtain several types of devices such as tubes, membranes, non-woven fabrics, gauzes, and sponges. All these scaffolds are highly biocompatible. In the human body they do not elicit any adverse reactions and are resorbed by the host tissues. Human hepatocytes, dermal fibroblasts and keratinocytes, chondrocytes, Schwann cells, bone marrow derived mesenchymal stem cells and adipose tissue derived mesenchymal stem cells have been successfully cultured in these meshes. The same scaffolds, in tube meshes, has been applied for vascular tissue engineering that has emerged as a promising technology for the design of an ideal, responsive, living conduit with properties similar to that of native tissue. 相似文献
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综述了最近几年国内外组织工程支架的研究状况,重点介绍了组织工程支架的制备技术(包括浇铸/沥滤致孔、低热高压、分相、超临界CO2、静电纺丝等),选用材料以及在皮肤、软骨、骨和心血管等组织修复中应用的最新进展。 相似文献
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Dylan Jack Richards Yu Tan Jia Jia Hai Yao Ying Mei 《Israel journal of chemistry》2013,53(9-10):805-814
Tissue engineering aims to fabricate functional tissue for applications in regenerative medicine and drug testing. More recently, 3D printing has shown great promise in tissue fabrication with a structural control from the micro- to the macroscale by using a layer-by-layer approach. Whether through scaffold-based or scaffold-free approaches, the standard for 3D-printed tissue engineering constructs is to provide a biomimetic structural environment that facilitates tissue formation and promotes host tissue integration (e.g., cellular infiltration, vascularization, and active remodeling). This review will cover several approaches that have advanced the field of 3D printing through novel fabrication methods of tissue engineering constructs. It will also discuss the applications of synthetic and natural materials for 3D printing facilitated tissue fabrication. 相似文献
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纤维素具有良好的生物相容性和可降解性,在生物组织工程领域作为支架材料的研究近年来受到研究者的关注。文章介绍了组织工程支架的性能要求,以及纤维素、细菌纤维素用于组织工程支架的研究现状。针对组织工程支架的分子设计、纳米化趋势,提出了纳米纤维素纤维用于组织工程支架的设想。并综述了纳米纤维素纤维制备的最新研究进展,预测了未来纤维素组织工程支架的发展趋势及前景。 相似文献
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从生物合成聚肽、自组装聚肽和肽/非肽聚合物3个方面,综述了与组织工程相关的聚肽研究的最新进展,并展望了此类材料的优势及发展方向。 相似文献
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David Brownell Stphane Chabaud Stphane Bolduc 《International journal of molecular sciences》2022,23(20)
Female gynecological organ dysfunction can cause infertility and psychological distress, decreasing the quality of life of affected women. Incidence is constantly increasing due to growing rates of cancer and increase of childbearing age in the developed world. Current treatments are often unable to restore organ function, and occasionally are the cause of female infertility. Alternative treatment options are currently being developed in order to face the inadequacy of current practices. In this review, pathologies and current treatments of gynecological organs (ovaries, uterus, and vagina) are described. State-of-the-art of tissue engineering alternatives to common practices are evaluated with a focus on in vivo models. Tissue engineering is an ever-expanding field, integrating various domains of modern science to create sophisticated tissue substitutes in the hope of repairing or replacing dysfunctional organs using autologous cells. Its application to gynecology has the potential of restoring female fertility and sexual wellbeing. 相似文献
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This is an overview of the development of process systems engineering (PSE) in a smaller world. Two different spatio-temporal scopes are identified for microscale and nanoscale process systems. The features and challenges for each scale are reviewed, and different methodologies used by them discussed. Comparison of these two new areas with traditional process systems engineering is described. If microscale PSE could be considered as an extension of traditional PSE, nanoscale PSE should be accepted as a new discipline which has looser connection with the extant core of chemical engineering. Since "molecular factories" is the next frontier of processing scale, nanoscale PSE will be the new theory to handle the design, simulation and operation of those active processing systems. 相似文献
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《国际聚合物材料杂志》2012,61(4):230-247
AbstractMany people, especially old and middle-aged, suffer from pain and disabilities caused by cartilage degradation. There are many surgical methods for cartilage treatment, however, none of them have shown acceptable results in long-term. Tissue engineering would be an acceptable approach for cartilage treatment. This includes cells, a carrier such as a matrix scaffold and signaling molecule. An ideal scaffold for cartilage tissue engineering should meet some requirements includes biocompatibility, biodegradability, and sufficient mechanical characteristic. While there are many suitable scaffolds made by natural and synthesis polymers, alginate- a natural polymer- has received good attention. Alginate offers many advantages for cartilage treatment; it has great potential in having tunable mechanical properties and easy manufacturing process. In the present paper, focusing on alginate as main scaffold constructive component, different studies on alginate based scaffolds in the form of physically, chemically and biologically crosslinked hydrogel, sponge, fiber, micro/nano particles and 3?D printed for articular cartilage tissue engineering are discussed and reviewed. 相似文献
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Jeanny S. Maciel Sara Azevedo Clara R. Correia Ana M. S. Costa Rui R. Costa Francisco A. Magalhes Aliny Abreu de Sousa Monteiro Jos Francisco Gomes Costa Regina C. M de Paula Judith P. A. Feitosa Joo F. Mano 《大分子材料与工程》2019,304(3)
In the last few years, several strategies have been proposed to fabricate scaffolds for tissue engineering (TE) applications; however, they are based on harsh and time‐consuming techniques. The choice for natural polymers such as cashew gum (CG) allows to circumvent the demands of biocompatibility and degradability of TE systems. In this work, CG, a polysaccharide derived from Anacardium occidentale trees, is functionalized with aldehyde groups through periodate oxidation. The resultant oxidized cashew gum (CGO) is mixed with gelatin (GE) to yield a covalently crosslinked hydrogel. CGO/GE sponges are obtained by employing a freeze‐drying methodology to the previously obtained hydrogels. The mechanical properties, swelling ability, and porosity of the GE/CGO sponges are tuned by using CGO with different degrees of oxidation. The resultant sponges can maintain high levels of water absorption and recover their initial mechanical properties after cyclic compression. Moreover, these porous and mechanically robust devices can support the adhesion and proliferation of cells, which can envision their application for the regeneration of soft tissues. 相似文献