scholarly journals Controlled Liposome Delivery from Chitosan-Based Thermosensitive Hydrogel for Regenerative Medicine

2022 ◽  
Vol 23 (2) ◽  
pp. 894
Author(s):  
Franco Furlani ◽  
Arianna Rossi ◽  
Maria Aurora Grimaudo ◽  
Giada Bassi ◽  
Elena Giusto ◽  
...  
Keyword(s):  
Regenerative Medicine ◽  
Tissue Regeneration ◽  
Controlled Delivery ◽  
Cell Uptake ◽  
Gelation Temperature ◽  
Thermosensitive Hydrogel ◽  
Chitosan Coating ◽  
Nanocomposite System ◽  
Potential Applications ◽  
Thermosensitive Hydrogels

This work describes the development of an injectable nanocomposite system based on a chitosan thermosensitive hydrogel combined with liposomes for regenerative medicine applications. Liposomes with good physicochemical properties are prepared and embedded within the chitosan network. The resulting nanocomposite hydrogel is able to provide a controlled release of the content from liposomes, which are able to interact with cells and be internalized. The cellular uptake is enhanced by the presence of a chitosan coating, and cells incubated with liposomes embedded within thermosensitive hydrogels displayed a higher cell uptake compared to cells incubated with liposomes alone. Furthermore, the gelation temperature of the system resulted to be equal to 32.6 °C; thus, the system can be easily injected in the target site to form a hydrogel at physiological temperature. Given the peculiar performance of the selected systems, the resulting thermosensitive hydrogels are a versatile platform and display potential applications as controlled delivery systems of liposomes for tissue regeneration.

scholarly journals Additive Manufacturing of Biopolymers for Tissue Engineering and Regenerative Medicine: An Overview, Potential Applications, Advancements, and Trends

2021 ◽  
Vol 2021 ◽  
pp. 1-20 ◽  
Author(s):  
Dhinakaran Veeman ◽  
M. Swapna Sai ◽  
P. Sureshkumar ◽  
T. Jagadeesha ◽  
L. Natrayan ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Additive Manufacturing ◽  
3D Printing ◽  
Regenerative Medicine ◽  
Tissue Regeneration ◽  
Three Dimensional ◽  
Porous Scaffolds ◽  
Wide Range ◽  
Potential Applications ◽  
Pharmaceutical Industries

As a technique of producing fabric engineering scaffolds, three-dimensional (3D) printing has tremendous possibilities. 3D printing applications are restricted to a wide range of biomaterials in the field of regenerative medicine and tissue engineering. Due to their biocompatibility, bioactiveness, and biodegradability, biopolymers such as collagen, alginate, silk fibroin, chitosan, alginate, cellulose, and starch are used in a variety of fields, including the food, biomedical, regeneration, agriculture, packaging, and pharmaceutical industries. The benefits of producing 3D-printed scaffolds are many, including the capacity to produce complicated geometries, porosity, and multicell coculture and to take growth factors into account. In particular, the additional production of biopolymers offers new options to produce 3D structures and materials with specialised patterns and properties. In the realm of tissue engineering and regenerative medicine (TERM), important progress has been accomplished; now, several state-of-the-art techniques are used to produce porous scaffolds for organ or tissue regeneration to be suited for tissue technology. Natural biopolymeric materials are often better suited for designing and manufacturing healing equipment than temporary implants and tissue regeneration materials owing to its appropriate properties and biocompatibility. The review focuses on the additive manufacturing of biopolymers with significant changes, advancements, trends, and developments in regenerative medicine and tissue engineering with potential applications.

scholarly journals Induced Pluripotent Stem Cells in Dental and Nondental Tissue Regeneration: A Review of an Unexploited Potential

2020 ◽  
Vol 2020 ◽  
pp. 1-24 ◽  
Author(s):  
Israa Ahmed Radwan ◽  
Dina Rady ◽  
Marwa M. S. Abbass ◽  
Sara El Moshy ◽  
Nermeen AbuBakr ◽  
...  
Keyword(s):  
Stem Cells ◽  
Regenerative Medicine ◽  
Induced Pluripotent Stem Cells ◽  
Tissue Regeneration ◽  
Pluripotent Stem Cells ◽  
Disease Modeling ◽  
Potential Applications ◽  
Induced Pluripotent

Cell-based therapies currently represent the state of art for tissue regenerative treatment approaches for various diseases and disorders. Induced pluripotent stem cells (iPSCs), reprogrammed from adult somatic cells, using vectors carrying definite transcription factors, have manifested a breakthrough in regenerative medicine, relying on their pluripotent nature and ease of generation in large amounts from various dental and nondental tissues. In addition to their potential applications in regenerative medicine and dentistry, iPSCs can also be used in disease modeling and drug testing for personalized medicine. The current review discusses various techniques for the production of iPSC-derived osteogenic and odontogenic progenitors, the therapeutic applications of iPSCs, and their regenerative potential in vivo and in vitro. Through the present review, we aim to explore the potential applications of iPSCs in dental and nondental tissue regeneration and to highlight different protocols used for the generation of different tissues and cell lines from iPSCs.

scholarly journals Nanocomposite scaffolds for accelerating chronic wound healing by enhancing angiogenesis

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Hamed Nosrati ◽  
Reza Aramideh Khouy ◽  
Ali Nosrati ◽  
Mohammad Khodaei ◽  
Mehdi Banitalebi-Dehkordi ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Wound Healing ◽  
Tissue Regeneration ◽  
Molecular Mechanisms ◽  
Healing Process ◽  
The Body ◽  
Key Factors ◽  
Potential Applications ◽  
Nanocomposite Scaffolds

AbstractSkin is the body’s first barrier against external pathogens that maintains the homeostasis of the body. Any serious damage to the skin could have an impact on human health and quality of life. Tissue engineering aims to improve the quality of damaged tissue regeneration. One of the most effective treatments for skin tissue regeneration is to improve angiogenesis during the healing period. Over the last decade, there has been an impressive growth of new potential applications for nanobiomaterials in tissue engineering. Various approaches have been developed to improve the rate and quality of the healing process using angiogenic nanomaterials. In this review, we focused on molecular mechanisms and key factors in angiogenesis, the role of nanobiomaterials in angiogenesis, and scaffold-based tissue engineering approaches for accelerated wound healing based on improved angiogenesis.

Development of Multilayered Chlorogenate-Peptide Based Biocomposite Scaffolds for Potential Applications in Ligament Tissue Engineering - An In Vitro Study

2017 ◽  
Vol 34 ◽  
pp. 37-56 ◽  
Author(s):  
Harrison T. Pajovich ◽  
Alexandra M. Brown ◽  
Andrew M. Smith ◽  
Sara K. Hurley ◽  
Jessica R. Dorilio ◽  
...  
Keyword(s):  
Tissue Regeneration ◽  
Type I Collagen ◽  
Phase Changes ◽  
Peptide Sequence ◽  
Proteoglycan Synthesis ◽  
Type I ◽  
Average Roughness ◽  
Potential Applications ◽  
Self Assembled

In this work, for the first time, chlorogenic acid, a natural phytochemical, was conjugated to a lactoferrin derived antimicrobial peptide sequence RRWQWRMKKLG to develop a self-assembled template. To mimic the components of extracellular matrix, we then incorporated Type I Collagen, followed by a sequence of aggrecan peptide (ATEGQVRVNSIYQDKVSL) onto the self-assembled templates for potential applications in ligament tissue regeneration. Mechanical properties and surface roughness were studied and the scaffolds displayed a Young’s Modulus of 169 MP and an average roughness of 72 nm respectively. Thermal phase changes were studied by DSC analysis. Results showed short endothermic peaks due to water loss and an exothermic peak due to crystallization of the scaffold caused by rearrangement of the components. Biodegradability studies indicated a percent weight loss of 27.5 % over a period of 37 days. Furthermore, the scaffolds were found to adhere to fibroblasts, the main cellular component of ligament tissue. The scaffolds promoted cell proliferation and displayed actin stress fibers indicative of cell motility and attachment. Collagen and proteoglycan synthesis were also promoted, demonstrating increased expression and deposition of collagen and proteoglycans. Additionally, the scaffolds exhibited antimicrobial activity against Staphylococcus epidermis bacteria, which is beneficial for minimizing biofilm formation if potentially used as implants. Thus, we have developed a novel biocomposite that may open new avenues to enhance ligament tissue regeneration.

Biodegradable porous beads and their potential applications in regenerative medicine

2012 ◽  
Vol 22 (23) ◽  
pp. 11442 ◽  
Author(s):  
Sung-Wook Choi ◽  
Yu Zhang ◽  
Yi-Chun Yeh ◽  
A. Lake Wooten ◽  
Younan Xia
Keyword(s):  
Regenerative Medicine ◽  
Potential Applications ◽  
Porous Beads

scholarly journals Tuning the Thermogelation and Rheology of Poly(2-Oxazoline)/poly(2-Oxazine)s Based Thermosensitive Hydrogels for 3D Bioprinting.

2021 ◽  
Author(s):  
Malik Salman Haider ◽  
Taufiq Ahmad ◽  
Mengshi Yang ◽  
Chen Hu ◽  
Lukas Hahn ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Stem Cells ◽  
Gel Strength ◽  
Adipose Derived Stem Cells ◽  
3D Bioprinting ◽  
Thermosensitive Hydrogel ◽  
Clay Nanoparticles ◽  
Hydrogel Matrix ◽  
Thermosensitive Hydrogels ◽  
3D Printed

As one kind of smart material, thermogelling polymers find applications in biofabrication, drug delivery and regenerative medicine. Here, we reported on a novel thermosensitive hydrogel which can be 3D printed using extrusion based printing. Gel strength was found around 3kPa storage modulus with pronounced shear thinning and rapid recovery after stress. Addition of clay nanoparticles (Laponite XLG) improved the rheological profile further. Human adipose derived stem cells were added to the hydrogel matrix, which remained fully viable after printing. Therefore, the presented materials adds to the available material toolbox for 3D bioprinting. <br>

Synthesis and characterization of a photocrosslinkable chitosan–gelatin hydrogel aimed for tissue regeneration

RSC Advances ◽  
2015 ◽  
Vol 5 (78) ◽  
pp. 63478-63488 ◽  
Author(s):  
Sofia M. Saraiva ◽  
Sónia P. Miguel ◽  
Maximiano P. Ribeiro ◽  
Paula Coutinho ◽  
Ilídio J. Correia
Keyword(s):  
Tissue Engineering ◽  
Regenerative Medicine ◽  
Tissue Regeneration ◽  
Synthesis And Characterization ◽  
Native Structure ◽  
Engineering Applications ◽  
Gelatin Hydrogel

In the area of regenerative medicine different approaches have been studied to restore the native structure of damaged tissues. Herein, the suitability of a photocrosslinkable hydrogel for tissue engineering applications was studied.

scholarly journals Immune physiology in tissue regeneration and aging, tumor growth, and regenerative medicine

Aging ◽  
2009 ◽  
Vol 1 (2) ◽  
pp. 157-181 ◽  
Author(s):  
Antonin Bukovsky ◽  
Michael R. Caudle ◽  
Ray J. Carson ◽  
Francisco Gaytán ◽  
Mahmoud Huleihel ◽  
...  
Keyword(s):  
Regenerative Medicine ◽  
Tumor Growth ◽  
Tissue Regeneration

scholarly journals A Mixed Thermosensitive Hydrogel System for Sustained Delivery of Tacrolimus for Immunosuppressive Therapy

Pharmaceutics ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 413 ◽  
Author(s):  
Hsiu-Chao Lin ◽  
Madonna Rica Anggelia ◽  
Chih-Chi Cheng ◽  
Kuan-Lin Ku ◽  
Hui-Yun Cheng ◽  
...  
Keyword(s):  
Immunosuppressive Therapy ◽  
In Vitro Release ◽  
Aqueous Solubility ◽  
Immunosuppressive Agent ◽  
Sustained Delivery ◽  
Thermosensitive Hydrogel ◽  
Thermosensitive Hydrogels ◽  
Hydrogel System

Tacrolimus is an immunosuppressive agent for acute rejection after allotransplantation. However, the low aqueous solubility of tacrolimus poses difficulties in formulating an injection dosage. Polypeptide thermosensitive hydrogels can maintain a sustained release depot to deliver tacrolimus. The copolymers, which consist of poloxamer and poly(l-alanine) with l-lysine segments at both ends (P–Lys–Ala–PLX), are able to carry tacrolimus in an in situ gelled form with acceptable biocompatibility, biodegradability, and low gelling concentrations from 3 to 7 wt %. By adding Pluronic F-127 to formulate a mixed hydrogel system, the drug release rate can be adjusted to maintain suitable drug levels in animals with transplants. Under this formulation, the in vitro release of tacrolimus was stable for more than 100 days, while in vivo release of tacrolimus in mouse model showed that rejection from skin allotransplantation was prevented for at least three weeks with one single administration. Using these mixed hydrogel systems for sustaining delivery of tacrolimus demonstrates advancement in immunosuppressive therapy.

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