scholarly journals Microfluidic-Based Droplets for Advanced Regenerative Medicine: Current Challenges and Future Trends

Biosensors ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 20
Author(s):  
Hojjatollah Nazari ◽  
Asieh Heirani-Tabasi ◽  
Sadegh Ghorbani ◽  
Hossein Eyni ◽  
Sajad Razavi Bazaz ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Stem Cells ◽  
Regenerative Medicine ◽  
Cell Therapy ◽  
Large Scale ◽  
Three Dimensional ◽  
3D Culture ◽  
Cell Encapsulation ◽  
Cost Effective ◽  
Culture Methods

Microfluidics is a promising approach for the facile and large-scale fabrication of monodispersed droplets for various applications in biomedicine. This technology has demonstrated great potential to address the limitations of regenerative medicine. Microfluidics provides safe, accurate, reliable, and cost-effective methods for encapsulating different stem cells, gametes, biomaterials, biomolecules, reagents, genes, and nanoparticles inside picoliter-sized droplets or droplet-derived microgels for different applications. Moreover, microenvironments made using such droplets can mimic niches of stem cells for cell therapy purposes, simulate native extracellular matrix (ECM) for tissue engineering applications, and remove challenges in cell encapsulation and three-dimensional (3D) culture methods. The fabrication of droplets using microfluidics also provides controllable microenvironments for manipulating gametes, fertilization, and embryo cultures for reproductive medicine. This review focuses on the relevant studies, and the latest progress in applying droplets in stem cell therapy, tissue engineering, reproductive biology, and gene therapy are separately evaluated. In the end, we discuss the challenges ahead in the field of microfluidics-based droplets for advanced regenerative medicine.

Engineered Biomimetic Nanofibers for Regenerative Medicine

2010 ◽  
Vol 76 ◽  
pp. 114-124
Author(s):  
Seeram Ramakrishna ◽  
Jayarama Reddy Venugopal ◽  
Susan Liao
Keyword(s):  
Tissue Engineering ◽  
Stem Cells ◽  
Regenerative Medicine ◽  
Cardiac Tissue ◽  
Three Dimensional ◽  
Electrospun Nanofibers ◽  
Cost Effective ◽  
Bioactive Molecules ◽  
Natural Polymers ◽  
Hematopoietic Stem

Attempts have been made to fabricate nanofibrous scaffolds to mimic the chemical composition and structural properties of extracellular matrix (ECM) for tissue/organ regeneration. Nanofibers with various patterns have been successfully produced from synthetic and natural polymers through a relatively simple technique of electrospinning. The resulting patterns can mimic some of the diverse tissue-specific orientation and three-dimensional (3D) fibrous structure. Studies on cell-nanofiber interactions have revealed the importance of nanotopography on cell adhesion, proliferation and differentiation. Our recent data showed that hematopoietic stem cells (HSCs) as well as mesenchymal stem cells (MSCs) can rapidly and effectively attached to the functionalized nanofibers. Mineralized 3D nanofibrous scaffold with bone marrow derived MSCs has been applied for bone tissue engineering. The use of injectable nanofibers for cardiac tissue engineering applications is attractive as they allow for the encapsulation of cardiomyocytes/MSCs as well as bioactive molecules for the repair of myocardial infarction. Duplicate 3D heart helix microstructure by the nanofibrous cardiac patch might provide functional support for infarcted myocardium. Furthermore, clinical applications of electrospun nanofibers for regenerative medicine are highly feasible due to the ease and flexibility of fabrication with the cost-effective method of making nanofibers.

scholarly journals Mesenchymal stem cell spheroids: potential cell materials for cell therapy

STEMedicine ◽  
2020 ◽  
Vol 2 (5) ◽  
pp. e67
Author(s):  
Zhongjuan Xu ◽  
Xingzhi Liu ◽  
Yu Wei ◽  
Zhe Zhao ◽  
Junjun Cao ◽  
...  
Keyword(s):  
Regenerative Medicine ◽  
Tissue Injury ◽  
Three Dimensional ◽  
3D Culture ◽  
Research Field ◽  
Three Dimensions ◽  
Spheroid Formation ◽  
Culture Methods ◽  
Differentiation Potential

Mesenchymal stromal/stem cells (MSCs) have been applied in clinical trials with an increasing number in recent years. MSCs showed their great potentials in regenerative medicine for their extensive sources, multilineage differentiation potential, low immunogenicity and self-renewal ability. However, the clinical application of MSCs still confronts many challenges including the requirement of large quantity of cells, low survival ability in vivo and the loss of main original characteristics due to two-dimensional (2D) culture although it is beneficial to cells fast expansion. Three-dimensional (3D) culture artificially creates an environment that permits cells to grow or interact with their surroundings in all three dimensions. Therefore, 3D culture was widely regarded as a more preferable and closer physiological microenvironment for cells growth. Recently, many different 3D spheroid culture methods have been developed to optimize MSCs biological characteristics to meet the demand of regenerative medicine. In this review, we comprehensively discussed the merits and demerits of different spheroid formation methods, expounded the mechanisms of spheroid formation and its microenvironment, and illustrated their optimized biological functions and the pre-clinical applications in various tissue injury and regeneration. In the end, we prospected the trends of this research field and proposed the key problems needed to be solved in the future.

scholarly journals A chemical tool for improved culture of human pluripotent stem cells

2020 ◽  
Author(s):  
Laurence Silpa ◽  
Maximilian Schuessler ◽  
Gu Liu ◽  
Marcus Olivecrona ◽  
Lucia Groizard-Payeras ◽  
...  
Keyword(s):  
Stem Cells ◽  
Pluripotent Stem Cells ◽  
Large Scale ◽  
3D Culture ◽  
Cost Effective ◽  
Human Pluripotent Stem Cells ◽  
Directed Differentiation ◽  
Kinase C ◽  
2D And 3D ◽  
Cell Cell

AbstractThe large-scale and cost-effective production of quality-controlled human pluripotent stem cells (hPSC) for use in cell therapy and drug discovery requires chemically-defined xenobiotic-free culture systems that enable easy and homogeneous expansion of pluripotent cells. Through phenotypic screening, we have identified a small molecule, OXS8360 (an optimized derivative of (-)-Indolactam V ((-)-ILV)), that stably disrupts hPSC cell-cell contacts. Proliferation of hPSC in OXS8360 is normal, as are pluripotency signatures, directed differentiation to hallmark lineages and karyotype over extended passaging. In 3D culture, OXS8360-treated hPSC form smaller, more uniform aggregates, that are easier to dissociate, greatly facilitating expansion. The mode of action of OXS8360 involves disruption of the localisation of the cell-cell adhesion molecule E-cadherin, via activation of unconventional Protein Kinase C isoforms. OXS8360 media supplementation is therefore able to yield more uniform, disaggregated 2D and 3D hPSC cultures, providing the hPSC field with an affordable tool to improve hPSC quality and scalability.

3D printing in tissue engineering: a state of the art review of technologies and biomaterials

2020 ◽  
Vol 26 (7) ◽  
pp. 1313-1334 ◽  
Author(s):  
Nataraj Poomathi ◽  
Sunpreet Singh ◽  
Chander Prakash ◽  
Arjun Subramanian ◽  
Rahul Sahay ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
3D Printing ◽  
Regenerative Medicine ◽  
State Of The Art ◽  
Three Dimensional ◽  
Cost Effective ◽  
Cochrane Library ◽  
Content Type ◽  
Wide Range ◽  
Potential Applications

Purpose In the past decade, three-dimensional (3D) printing has gained attention in areas such as medicine, engineering, manufacturing art and most recently in education. In biomedical, the development of a wide range of biomaterials has catalysed the considerable role of 3D printing (3DP), where it functions as synthetic frameworks in the form of scaffolds, constructs or matrices. The purpose of this paper is to present the state-of-the-art literature coverage of 3DP applications in tissue engineering (such as customized scaffoldings and organs, and regenerative medicine). Design/methodology/approach This review focusses on various 3DP techniques and biomaterials for tissue engineering (TE) applications. The literature reviewed in the manuscript has been collected from various journal search engines including Google Scholar, Research Gate, Academia, PubMed, Scopus, EMBASE, Cochrane Library and Web of Science. The keywords that have been selected for the searches were 3 D printing, tissue engineering, scaffoldings, organs, regenerative medicine, biomaterials, standards, applications and future directions. Further, the sub-classifications of the keyword, wherever possible, have been used as sectioned/sub-sectioned in the manuscript. Findings 3DP techniques have many applications in biomedical and TE (B-TE), as covered in the literature. Customized structures for B-TE applications are easy and cost-effective to manufacture through 3DP, whereas on many occasions, conventional technologies generally become incompatible. For this, this new class of manufacturing must be explored to further capabilities for many potential applications. Originality/value This review paper presents a comprehensive study of the various types of 3DP technologies in the light of their possible B-TE application as well as provides a future roadmap.

scholarly journals МЕЗЕНХІМАЛЬНІ СТОВБУРОВІ КЛІТИНИ ОДОНТОГЕННОГО ПОХОДЖЕННЯ: ПЕРСПЕКТИВИ ТА МОЖЛИВОСТІ РЕГЕНЕРАТИВНОЇ МЕДИЦИНИ

2021 ◽  
Vol 116 (3) ◽  
pp. 33-40
Author(s):  
О.І. Годованець ◽  
К.Л. Гальчук ◽  
Т.І. Муринюк ◽  
Е.О. Саука
Keyword(s):  
Tissue Engineering ◽  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Stem Cell ◽  
Regenerative Medicine ◽  
Cell Therapy ◽  
Stem Cell Therapy ◽  
Web Of Science ◽  
Regenerative Dentistry

Мета: Провести аналіз літературних джерел у напрямку науково-теоретичних та клінічних аспек- тів щодо можливостей використання мезенхімаль- них стовбурових клітин, отриманих з різних джерел щелепно-лицевої ділянки. Матеріали і методи: Під час дослідження викорис- тано бібліосемантичний метод та структурно-логіч- ний аналіз. Для пошуку сучасної наукової літератури були використані електронні бази даних PubMed, MEDLINE, Scopus, Web of Science та EMBASE за клю- човими словами «regenerative medicine», «regenerative dentistry», «stem cells», «dental mesenchymal stem cells», «stem cell therapy», «tissue engineering». Висновки: На основі проведеного аналізу літера- тури прослідковується неабиякий інтерес науковців до стовбурових клітин одонтогенного походження та їх використання у регенеративній практиці не лише стоматологічного спрямування, але і для ліку- вання соматичних хвороб різного генезу. Це пов’язано із неінвазивним та більш простим методом забору матеріалу, порівняно із кістковим мозком людини чи ембріональними тканинами. Стовбурові клітини різ- няться за походженням, диференційною активністю та джерелом їх отримання, а також мають ваго- мий потенціал до диференціації за напрямком різних клітинних ліній залежно від впливу факторів росту та живильного середовища. При одержанні нових чистих культур вдається встановити їх походження шляхом ідентифікації експресії маркерів, характерних для стовбурових клітин. Тим не менш, незважаючи на високі очікування від подальшого розвитку реге- неративної терапії, науковцям необхідно детальніше вивчити можливості використання цих клітин на етапах клінічного випробування, дослідити імуноло- гічну поведінку стовбурових клітин одонтогенного походження в тому чи іншому середовищі.

scholarly journals Adipose-Derived Stem Cells for Tissue Engineering and Regenerative Medicine Applications

2016 ◽  
Vol 2016 ◽  
pp. 1-19 ◽  
Author(s):  
Ru Dai ◽  
Zongjie Wang ◽  
Roya Samanipour ◽  
Kyo-in Koo ◽  
Keekyoung Kim
Keyword(s):  
Tissue Engineering ◽  
Stem Cells ◽  
Regenerative Medicine ◽  
Three Dimensional ◽  
Adipose Derived Stem Cells ◽  
Tissue Engineering Scaffolds ◽  
Stem Cell Source ◽  
Proliferation And Differentiation ◽  
Mesenchymal Stem Cell Source

Adipose-derived stem cells (ASCs) are a mesenchymal stem cell source with properties of self-renewal and multipotential differentiation. Compared to bone marrow-derived stem cells (BMSCs), ASCs can be derived from more sources and are harvested more easily. Three-dimensional (3D) tissue engineering scaffolds are better able to mimic thein vivocellular microenvironment, which benefits the localization, attachment, proliferation, and differentiation of ASCs. Therefore, tissue-engineered ASCs are recognized as an attractive substitute for tissue and organ transplantation. In this paper, we review the characteristics of ASCs, as well as the biomaterials and tissue engineering methods used to proliferate and differentiate ASCs in a 3D environment. Clinical applications of tissue-engineered ASCs are also discussed to reveal the potential and feasibility of using tissue-engineered ASCs in regenerative medicine.

In vitro Three Dimensional Scaffold-free Construct of Human Adipose-derived Stem Cells in Coculture with Endothelial Cells and Fibroblasts

2017 ◽  
Vol 68 (6) ◽  
pp. 1341-1344
Author(s):  
Grigore Berea ◽  
Gheorghe Gh. Balan ◽  
Vasile Sandru ◽  
Paul Dan Sirbu
Keyword(s):  
Tissue Engineering ◽  
Stem Cells ◽  
Endothelial Cells ◽  
Single Cell ◽  
Cell Line ◽  
Bone Repair ◽  
Umbilical Vein ◽  
Human Fibroblasts ◽  
Three Dimensional ◽  
Adipose Derived Stem Cells

Complex interactions between stem cells, vascular cells and fibroblasts represent the substrate of building microenvironment-embedded 3D structures that can be grafted or added to bone substitute scaffolds in tissue engineering or clinical bone repair. Human Adipose-derived Stem Cells (hASCs), human umbilical vein endothelial cells (HUVECs) and normal dermal human fibroblasts (NDHF) can be mixed together in three dimensional scaffold free constructs and their behaviour will emphasize their potential use as seeding points in bone tissue engineering. Various combinations of the aforementioned cell lines were compared to single cell line culture in terms of size, viability and cell proliferation. At 5 weeks, viability dropped for single cell line spheroids while addition of NDHF to hASC maintained the viability at the same level at 5 weeks Fibroblasts addition to the 3D construct of stem cells and endothelial cells improves viability and reduces proliferation as a marker of cell differentiation toward osteogenic line.

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