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Kopf S, Root A, Heinmaa I, Aristéia de Lima J, Åkesson D, Skrifvars M. Production and Characterization of Melt-Spun Poly(3-hydroxybutyrate)/Poly(3-hydroxybutyrate- co-4-hydroxybutyrate) Blend Monofilaments. ACS OMEGA 2024; 9:27415-27427. [PMID: 38947777 PMCID: PMC11209910 DOI: 10.1021/acsomega.4c02241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 05/16/2024] [Accepted: 05/31/2024] [Indexed: 07/02/2024]
Abstract
We investigated the melt-spinning potential of a poly(3-hydroxybutyrate)/poly(3-hydroxybutyrate-co-4-hydroxybutyrate) blend using a piston spinning machine with two different spinneret diameters (0.2 and 0.5 mm). Results from the differential scanning calorimetry, dynamic mechanical thermal analysis, and tensile testing showed distinct filament properties depending on the monofilaments' cross-sectional area. Finer filaments possessed different melting behaviors compared to the coarser filaments and the neat polymer, indicating the formation of a different type of polymer crystal. Additionally, the mechanical properties of the finer filament (tensile strength: 21.5 MPa and elongation at break: 341%) differed markedly from the coarser filament (tensile strength: 11.7 MPa, elongation at break: 12.3%). The hydrolytic stability of the filaments was evaluated for 7 weeks in a phosphate-buffered saline solution and showed a considerably reduced elongation at break of the thinner filaments. Overall, the results indicate considerable potential for further filament improvements to facilitate textile processing.
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Affiliation(s)
- Sabrina Kopf
- Swedish
Centre for Resource Recovery, Faculty of Textiles, Engineering and
Business, University of Borås, 501 90 Borås, Sweden
| | - Andrew Root
- MagSol, Tuhkanummenkuja 2, 00970 Helsinki, Finland
| | - Ivo Heinmaa
- National
Institute of Chemical Physics and Biophysics, 12618 Tallinn, Estonia
| | - Juliana Aristéia de Lima
- Swedish
Centre for Resource Recovery, Faculty of Textiles, Engineering and
Business, University of Borås, 501 90 Borås, Sweden
- Department
of Polymer, Fibre and Composite, RISE Research
Institutes of Sweden, 504
62 Borås, Sweden
| | - Dan Åkesson
- Swedish
Centre for Resource Recovery, Faculty of Textiles, Engineering and
Business, University of Borås, 501 90 Borås, Sweden
| | - Mikael Skrifvars
- Swedish
Centre for Resource Recovery, Faculty of Textiles, Engineering and
Business, University of Borås, 501 90 Borås, Sweden
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Nugraha AP, Narmada IB, Winoto ER, Ardani IGAW, Triwardhani A, Alida A, Pramusita A, Nur RM, Indrastie N, Nam HY, Ihsan IS, Riawan W, Rantam FA, Nugraha AP, Noor TNEBTA. Gingiva Mesenchymal Stem Cells Normoxic or Hypoxic Preconditioned Application Under Orthodontic Mechanical Force on Osterix, Osteopontin, and ALP Expression. Eur J Dent 2024; 18:501-509. [PMID: 37995729 PMCID: PMC11132784 DOI: 10.1055/s-0043-1772699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2023] Open
Abstract
OBJECTIVES The aim of this article was to investigate Osterix, ALP, and osteopontin expression in the compression and tension sides of alveolar bone after the application of normoxic/hypoxic-preconditioned GMSCs in rabbits (Oryctolagus cuniculus) induced with OMF. MATERIALS AND METHODS Forty-eight healthy, young male rabbits were divided into four groups: [-] OMF; [+] OMF; OMF with GMSCs normoxic-preconditioned; and OMF and GMSCs hypoxic-preconditioned. The central incisor and left mandibular molar in the experimental animals were moved, the mandibular first molar was moved mesially using nickel titanium (NiTi) and stainless steel ligature wire connected to a 50 g/mm2 light force closed coil spring. Allogeneic application of normoxic or hypoxic-preconditioned GMSCs was used in as many as 106 cells in a 20 µL phosphate buffered saline single dose and injected into experimental animals' gingiva after 1 day of OTM. On days 7, 14, and 28, all experimental animals were euthanized. Osterix, ALP, and osteopontin expressions were examined by immunohistochemistry. RESULTS Osterix, ALP, and osteopontin expressions were significantly different after allogeneic application of hypoxic-preconditioned GMSCs than normoxic-preconditioned GMSCs in the tension and compression of the alveolar bone side during OMF (p < 0.05). CONCLUSION Osterix, ALP, and osteopontin expressions were significantly more enhanced post-transplantation of GMSCs with hypoxic-preconditioning than after transplantation of normoxic-preconditioned GMSCs in rabbits (O. cuniculus) induced with OMF.
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Affiliation(s)
- Alexander Patera Nugraha
- Department of Orthodontics, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Ida Bagus Narmada
- Department of Orthodontics, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Ervina Restiwulan Winoto
- Department of Orthodontics, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - I Gusti Aju Wahju Ardani
- Department of Orthodontics, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Ari Triwardhani
- Department of Orthodontics, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Alida Alida
- Department of Orthodontics, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Adya Pramusita
- Department of Orthodontics, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Reyhan Mahendra Nur
- Department of Orthodontics, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Nuraini Indrastie
- Department of Orthodontics, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Hui Yin Nam
- Nanotechnology and Catalysis Research Centre (NANOCAT), Universiti Malaya, Kuala Lumpur, Malaysia
- Tissue Engineering Group, Department of Orthopaedic Surgery (NOCERAL), Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Igo Syaiful Ihsan
- Stem Cell Research and Development Center, Universitas Airlangga, Surabaya, Indonesia
| | - Wibi Riawan
- Biomolecular Biochemistry, Faculty of Medicine, Universitas Brawijaya, Malang, Indonesia
| | - Fedik Abdul Rantam
- Laboratory of Immunology and Virology Department of Microbiology, Faculty of Veterinary Medicine, Universitas Airlangga, Surabaya, Indonesia
| | | | - Tengku Natasha Eleena binti Tengku Ahmad Noor
- Membership of Faculty of Dental Surgery, Royal Collage of Surgeon, Edinburgh University, United Kingdom
- Malaysian Armed Forces Dental Officer, 609 Armed Forces Dental Clinic, Kem Semenggo, Kuching, Sarawak, Malaysia
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Mazio C, Mavaro I, Palladino A, Casale C, Urciuolo F, Banfi A, D'Angelo L, Netti PA, de Girolamo P, Imparato G, Attanasio C. Rapid innervation and physiological epidermal regeneration by bioengineered dermis implanted in mouse. Mater Today Bio 2024; 25:100949. [PMID: 38298559 PMCID: PMC10827562 DOI: 10.1016/j.mtbio.2024.100949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 01/02/2024] [Accepted: 01/06/2024] [Indexed: 02/02/2024] Open
Abstract
Tissue-engineered skin substitutes are promising tools to cover large and deep skin defects. However, the lack of a synergic and fast regeneration of the vascular network, nerves, and skin appendages limits complete skin healing and impairs functional recovery. It has been highlighted that an ideal skin substitute should mimic the structure of the native tissue to enhance clinical effectiveness. Here, we produced a pre-vascularized dermis (PVD) comprised of fibroblasts embedded in their own extracellular matrix (ECM) and a capillary-like network. Upon implantation in a mouse full-thickness skin defect model, we observed a very early innervation of the graft in 2 weeks. In addition, mouse capillaries and complete epithelialization were detectable as early as 1 week after implantation and, skin appendages developed in 2 weeks. These anatomical features underlie the interaction with the skin nerves, thus providing a further cue for reinnervation guidance. Further, the graft displays mechanical properties, collagen density, and assembly features very similar to the host tissue. Taken together our data show that the pre-existing ECM components of the PVD, physiologically organized and assembled similarly to the native tissue, support a rapid regeneration of dermal tissue. Therefore, our results suggest a promising potential for PVD in skin regeneration.
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Affiliation(s)
- Claudia Mazio
- Istituto Italiano di Tecnologia, Center for Advanced Biomaterials for HealthCare@CRIB, Italy
| | - Isabella Mavaro
- Istituto Italiano di Tecnologia, Center for Advanced Biomaterials for HealthCare@CRIB, Italy
- University of Naples Federico II, Department of Veterinary Medicine and Animal Production, Italy
| | - Antonio Palladino
- University of Naples Federico II, Department of Agricultural Sciences, Italy
| | - Costantino Casale
- University of Naples Federico II, Interdisciplinary Research Centre on Biomaterials (CRIB), Italy
| | - Francesco Urciuolo
- University of Naples Federico II, Department of Chemical, Materials and Industrial Production Engineering, Italy
| | - Andrea Banfi
- Basel University Hospital and University of Basel, Department of Biomedicine, Switzerland
| | - Livia D'Angelo
- University of Naples Federico II, Department of Veterinary Medicine and Animal Production, Italy
| | - Paolo A. Netti
- Istituto Italiano di Tecnologia, Center for Advanced Biomaterials for HealthCare@CRIB, Italy
- University of Naples Federico II, Interdisciplinary Research Centre on Biomaterials (CRIB), Italy
- University of Naples Federico II, Department of Chemical, Materials and Industrial Production Engineering, Italy
| | - Paolo de Girolamo
- University of Naples Federico II, Department of Veterinary Medicine and Animal Production, Italy
| | - Giorgia Imparato
- Istituto Italiano di Tecnologia, Center for Advanced Biomaterials for HealthCare@CRIB, Italy
| | - Chiara Attanasio
- University of Naples Federico II, Department of Veterinary Medicine and Animal Production, Italy
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He S, Li H, Chi B, Zhang X, Wang Y, Wu J, Huang Q. Construction of a dual-component hydrogel matrix for 3D biomimetic skin based on photo-crosslinked chondroitin sulfate/collagen. Int J Biol Macromol 2024; 254:127940. [PMID: 37951430 DOI: 10.1016/j.ijbiomac.2023.127940] [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: 07/11/2023] [Revised: 10/15/2023] [Accepted: 10/27/2023] [Indexed: 11/14/2023]
Abstract
The main challenge in the field of 3D biomimetic skin is to search for a suitable hydrogel matrix with good biocompatibility, appropriate mechanical property and inner porosity that can support the adhesion and proliferation of skin cells. In this study, photocurable chondroitin sulfate methacrylate (CSMA) and collagen methacrylate (CoLMA) synthesized from chondroitin sulfate (CS) and type I collagen I (CoL) in the dermal matrix were used to construct a photo-crosslinked dual-component CSMA-CoLMA hydrogel matrix. Due to the toughening effect of the dual-component, the CSMA-CoLMA hydrogel improved the intrinsic brittleness of the single-component CSMA hydrogel, presented good mechanical tunability. The average storage and elasticity modulus could reach 3.3 KPa and 30.3 KPa, respectively, which were close to those of natural skin. The CSMA-CoLMA hydrogel with a ratio of 8/6 showed suitable porous structure and good biocompatibility, supporting the adhesion and proliferation of skin cells. Furthermore, the expression of characteristic marker proteins was detected in the epidermal and dermal bi-layered models constructed with the hydrogel containing keratinocytes and fibroblasts. These results suggest that the dual-component CSMA-CoLMA hydrogel has promising potential as a matrix to construct 3D biomimetic skin.
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Affiliation(s)
- Shengsheng He
- Center of Skin Health and Cosmetic Development & Evaluation, China Pharmaceutical University, Nanjing 210009, China
| | - Huijuan Li
- College of Pharmacy, China Pharmaceutical University, Nanjing 210009, China.
| | - Baiyi Chi
- Center of Skin Health and Cosmetic Development & Evaluation, China Pharmaceutical University, Nanjing 210009, China
| | - Xingjiang Zhang
- Center of Skin Health and Cosmetic Development & Evaluation, China Pharmaceutical University, Nanjing 210009, China
| | - Yuzhe Wang
- Center of Skin Health and Cosmetic Development & Evaluation, China Pharmaceutical University, Nanjing 210009, China
| | - Jianxin Wu
- Center of Skin Health and Cosmetic Development & Evaluation, China Pharmaceutical University, Nanjing 210009, China
| | - Qing Huang
- Center of Skin Health and Cosmetic Development & Evaluation, China Pharmaceutical University, Nanjing 210009, China.
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Timofticiuc IA, Călinescu O, Iftime A, Dragosloveanu S, Caruntu A, Scheau AE, Badarau IA, Didilescu AC, Caruntu C, Scheau C. Biomaterials Adapted to Vat Photopolymerization in 3D Printing: Characteristics and Medical Applications. J Funct Biomater 2023; 15:7. [PMID: 38248674 PMCID: PMC10816811 DOI: 10.3390/jfb15010007] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/07/2023] [Accepted: 12/19/2023] [Indexed: 01/23/2024] Open
Abstract
Along with the rapid and extensive advancements in the 3D printing field, a diverse range of uses for 3D printing have appeared in the spectrum of medical applications. Vat photopolymerization (VPP) stands out as one of the most extensively researched methods of 3D printing, with its main advantages being a high printing speed and the ability to produce high-resolution structures. A major challenge in using VPP 3D-printed materials in medicine is the general incompatibility of standard VPP resin mixtures with the requirements of biocompatibility and biofunctionality. Instead of developing completely new materials, an alternate approach to solving this problem involves adapting existing biomaterials. These materials are incompatible with VPP 3D printing in their pure form but can be adapted to the VPP chemistry and general process through the use of innovative mixtures and the addition of specific pre- and post-printing steps. This review's primary objective is to highlight biofunctional and biocompatible materials that have been adapted to VPP. We present and compare the suitability of these adapted materials to different medical applications and propose other biomaterials that could be further adapted to the VPP 3D printing process in order to fulfill patient-specific medical requirements.
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Affiliation(s)
- Iosif-Aliodor Timofticiuc
- Department of Physiology, The “Carol Davila” University of Medicine and Pharmacy, 8 Eroii Sanitari Boulevard, 050474 Bucharest, Romania
| | - Octavian Călinescu
- Department of Biophysics, The “Carol Davila” University of Medicine and Pharmacy, 8 Eroii Sanitari Boulevard, 050474 Bucharest, Romania
| | - Adrian Iftime
- Department of Biophysics, The “Carol Davila” University of Medicine and Pharmacy, 8 Eroii Sanitari Boulevard, 050474 Bucharest, Romania
| | - Serban Dragosloveanu
- Department of Orthopaedics and Traumatology, The “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Department of Orthopaedics, “Foisor” Clinical Hospital of Orthopaedics, Traumatology and Osteoarticular TB, 021382 Bucharest, Romania
| | - Ana Caruntu
- Department of Oral and Maxillofacial Surgery, “Carol Davila” Central Military Emergency Hospital, 010825 Bucharest, Romania
- Department of Oral and Maxillofacial Surgery, Faculty of Dental Medicine, Titu Maiorescu University, 031593 Bucharest, Romania
| | - Andreea-Elena Scheau
- Department of Radiology and Medical Imaging, Fundeni Clinical Institute, 022328 Bucharest, Romania
| | - Ioana Anca Badarau
- Department of Physiology, The “Carol Davila” University of Medicine and Pharmacy, 8 Eroii Sanitari Boulevard, 050474 Bucharest, Romania
| | - Andreea Cristiana Didilescu
- Department of Embryology, Faculty of Dentistry, The “Carol Davila” University of Medicine and Pharmacy, 8 Eroii Sanitari Boulevard, 050474 Bucharest, Romania
| | - Constantin Caruntu
- Department of Physiology, The “Carol Davila” University of Medicine and Pharmacy, 8 Eroii Sanitari Boulevard, 050474 Bucharest, Romania
- Department of Dermatology, “Prof. N.C. Paulescu” National Institute of Diabetes, Nutrition and Metabolic Diseases, 011233 Bucharest, Romania
| | - Cristian Scheau
- Department of Physiology, The “Carol Davila” University of Medicine and Pharmacy, 8 Eroii Sanitari Boulevard, 050474 Bucharest, Romania
- Department of Radiology and Medical Imaging, “Foisor” Clinical Hospital of Orthopaedics, Traumatology and Osteoarticular TB, 021382 Bucharest, Romania
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Bashiri Z, Gholipourmalekabadi M, Khadivi F, Salem M, Afzali A, Cham TC, Koruji M. In vitro spermatogenesis in artificial testis: current knowledge and clinical implications for male infertility. Cell Tissue Res 2023; 394:393-421. [PMID: 37721632 DOI: 10.1007/s00441-023-03824-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 08/14/2023] [Indexed: 09/19/2023]
Abstract
Men's reproductive health exclusively depends on the appropriate maturation of certain germ cells known as sperm. Certain illnesses, such as Klinefelter syndrome, cryptorchidism, and syndrome of androgen insensitivity or absence of testis maturation in men, resulting in the loss of germ cells and the removal of essential genes on the Y chromosome, can cause non-obstructive azoospermia. According to laboratory research, preserving, proliferating, differentiating, and transplanting spermatogonial stem cells or testicular tissue could be future methods for preserving the fertility of children with cancer and men with azoospermia. Therefore, new advances in stem cell research may lead to promising therapies for treating male infertility. The rate of progression and breakthrough in the area of in vitro spermatogenesis is lower than that of SSC transplantation, but newer methods are also being developed. In this regard, tissue and cell culture, supplements, and 3D scaffolds have opened new horizons in the differentiation of stem cells in vitro, which could improve the outcomes of male infertility. Various 3D methods have been developed to produce cellular aggregates and mimic the organization and function of the testis. The production of an artificial reproductive organ that supports SSCs differentiation will certainly be a main step in male infertility treatment.
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Affiliation(s)
- Zahra Bashiri
- Stem Cell and Regenerative Medicine Research Center, Iran University of Medical Sciences, Shahid Hemmat Highway, Tehran, 1449614535, Iran.
- Department of Anatomy, School of Medicine, Iran University of Medical Sciences, Shahid Hemmat Highway, Tehran, 1449614535, Iran.
- Omid Fertility & Infertility Clinic, Hamedan, Iran.
| | - Mazaher Gholipourmalekabadi
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran
- Department of Tissue Engineering & Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
- Department of Medical Biotechnology, Faculty of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Farnaz Khadivi
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
- Department of Anatomy, School of Medicine, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Maryam Salem
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Azita Afzali
- Hajar Hospital, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Tat-Chuan Cham
- Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK, S7N 5B4, Canada
| | - Morteza Koruji
- Stem Cell and Regenerative Medicine Research Center, Iran University of Medical Sciences, Shahid Hemmat Highway, Tehran, 1449614535, Iran.
- Department of Anatomy, School of Medicine, Iran University of Medical Sciences, Shahid Hemmat Highway, Tehran, 1449614535, Iran.
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El-Wakil N, Kamel R, Mahmoud AA, Dufresne A, Abouzeid RE, Abo El-Fadl M, Maged A. Risedronate-loaded aerogel scaffolds for bone regeneration. Drug Deliv 2023; 30:51-63. [PMID: 36474425 PMCID: PMC9937015 DOI: 10.1080/10717544.2022.2152135] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Sugarcane bagasse-derived nanofibrillated cellulose (NFC), a type of cellulose with a fibrous structure, is potentially used in the pharmaceutical field. Regeneration of this cellulose using a green process offers a more accessible and less ordered cellulose II structure (amorphous cellulose; AmC). Furthermore, the preparation of cross-linked cellulose (NFC/AmC) provides a dual advantage by building a structural block that could exhibit distinct mechanical properties. 3D aerogel scaffolds loaded with risedronate were prepared in our study using NFC or cross-linked cellulose (NFC/AmC), then combined with different concentrations of chitosan. Results proved that the aerogel scaffolds composed of NFC and chitosan had significantly improved the mechanical properties and retarded drug release compared to all other fabricated aerogel scaffolds. The aerogel scaffolds containing the highest concentration of chitosan (SC-T3) attained the highest compressive strength and mean release time values (415 ± 41.80 kPa and 2.61 ± 0.23 h, respectively). Scanning electron microscope images proved the uniform highly porous microstructure of SC-T3 with interconnectedness. All the tested medicated as well as unmedicated aerogel scaffolds had the ability to regenerate bone as assessed using the MG-63 cell line, with the former attaining a higher effect than the latter. However, SC-T3 aerogel scaffolds possessed a lower regenerative effect than those composed of NFC only. This study highlights the promising approach of the use of biopolymers derived from agro-wastes for tissue engineering.
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Affiliation(s)
- Nahla El-Wakil
- Cellulose and Paper Department, National Research Centre, Giza, Egypt
| | - Rabab Kamel
- Pharmaceutical Technology Department, National Research Centre, Giza, Egypt
| | - Azza A. Mahmoud
- Pharmaceutics and Pharmaceutical Technology Department, Faculty of Pharmacy, Future University in Egypt, New Cairo, Egypt,CONTACT Azza A. Mahmoud Pharmaceutics and Pharmaceutical Technology Department, Faculty of Pharmacy, Future University in Egypt, New Cairo, Egypt
| | - Alain Dufresne
- CNRS, Grenoble INP, LGP2, Université Grenoble Alpes, Grenoble, France
| | - Ragab E. Abouzeid
- Cellulose and Paper Department, National Research Centre, Giza, Egypt
| | - Mahmoud T. Abo El-Fadl
- Biochemistry Department, Biotechnology Research Institute, National Research Centre, Giza, Egypt,Cancer Biology and Genetics Laboratory, Centre of Excellence for Advanced Sciences, National Research Centre, Giza, Egypt
| | - Amr Maged
- Pharmaceutics and Pharmaceutical Technology Department, Faculty of Pharmacy, Future University in Egypt, New Cairo, Egypt,Pharmaceutical Factory, Faculty of Pharmacy, Future University in Egypt, New Cairo, Egypt
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Poddar D, Singh A, Rao P, Mohanty S, Jain P. Modified-Hydroxyapatite-Chitosan Hybrid Composite Interfacial Coating on 3D Polymeric Scaffolds for Bone Tissue Engineering. Macromol Biosci 2023; 23:e2300243. [PMID: 37586699 DOI: 10.1002/mabi.202300243] [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: 05/30/2023] [Revised: 07/31/2023] [Indexed: 08/18/2023]
Abstract
Three dimensional (3D) scaffolds have huge limitations due to their low porosity, mechanical strength, and lack of direct cell-bioactive drug contact. Whereas bisphosphonate drug has the ability to stimulate osteogenesis in osteoblasts and bone marrow mesenchymal stem cells (hMSC) which attracted its therapeutic use. However it is hard administration low bioavailability, and lack of site-specificity, limiting its usage. The proposed scaffold architecture allows cells to access the bioactive surface at their apex by interacting at the scaffold's interfacial layer. The interface of 3D polycaprolactone (PCL) scaffolds has been coated with alendronate-modified hydroxyapatite (MALD) enclosed in a chitosan matrix, to mimic the native environment and stupulate the through interaction of cells to bioactive layer. Where the mechanical strength will be provided by the skeleton of PCL. In the MALD composite's hydroxyapatite (HAP) component will govern alendronate (ALD) release behavior, and HAP presence will drive the increase in local calcium ion concentration increases hMSC proliferation and differentiation. In results, MALD show release of 86.28 ± 0.22. XPS and SEM investigation of the scaffold structure, shows inspiring particle deposition with chitosan over the interface. All scaffolds enhanced cell adhesion, proliferation, and osteocyte differentiation for over a week without in vitro cell toxicity with 3.03 ± 0.2 kPa mechanical strength.
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Affiliation(s)
- Deepak Poddar
- Department of Chemistry, Netaji Subhas University of Technology, Dwarka Sector 3, New Delhi, 110078, India
- Department of Chemical Engineering, Indian Institute of Technology Delhi, New Delhi, 110016, India
| | - Ankita Singh
- Department of Chemistry, Netaji Subhas University of Technology, Dwarka Sector 3, New Delhi, 110078, India
| | - Pranshu Rao
- Stem Cell Facility, DBT-Centre of Excellence for Stem Cell Research, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Sujata Mohanty
- Stem Cell Facility, DBT-Centre of Excellence for Stem Cell Research, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Purnima Jain
- Department of Chemistry, Netaji Subhas University of Technology, Dwarka Sector 3, New Delhi, 110078, India
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Diniz MSDF, Mourão MM, Xavier LP, Santos AV. Recent Biotechnological Applications of Polyhydroxyalkanoates (PHA) in the Biomedical Sector-A Review. Polymers (Basel) 2023; 15:4405. [PMID: 38006129 PMCID: PMC10675258 DOI: 10.3390/polym15224405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 09/29/2023] [Accepted: 09/30/2023] [Indexed: 11/26/2023] Open
Abstract
Petroleum-derived plastics are materials of great importance for the contemporary lifestyle, and are widely used commercially because they are low cost, resistant, malleable, and weightless, in addition to their hydrophobic character. However, some factors that confer the qualities of these materials also cause problems, mainly environmental, associated with their use. The COVID-19 pandemic aggravated these impacts due to the high demand for personal protective equipment and the packaging sector. In this scenario, bioplastics are environmentally positive alternatives to these plastics due to their applicability in several areas ranging from packaging, to biomedicine, to agriculture. Polyhydroxyalkanoates (PHAs) are biodegradable biopolymers usually produced by microorganisms as an energy reserve. Their structural variability provides a wide range of applications, making them a viable option to replace polluting materials. PHAs can be applied in various biotechnology sectors, such as producing drug carriers and scaffolds for tissue engineering. This review aimed to survey works published in the last five years on the study and biotechnological application of PHAs in the biomedical sector, exploring the versatility and advantages of their use and helping to understand how to enhance their application.
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Affiliation(s)
- Matheus Silva da Fonseca Diniz
- Laboratory of Biotechnology of Enzymes and Biotransformations, Institute of Biological Sciences, Federal University of Pará, Belém 66075-110, Brazil; (M.M.M.); (L.P.X.)
| | | | | | - Agenor Valadares Santos
- Laboratory of Biotechnology of Enzymes and Biotransformations, Institute of Biological Sciences, Federal University of Pará, Belém 66075-110, Brazil; (M.M.M.); (L.P.X.)
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10
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Zhang Z, Zhao S, Sun Z, Zhai C, Xia J, Wen C, Zhang Y, Zhang Y. Enhancement of the therapeutic efficacy of mesenchymal stem cell-derived exosomes in osteoarthritis. Cell Mol Biol Lett 2023; 28:75. [PMID: 37770821 PMCID: PMC10540339 DOI: 10.1186/s11658-023-00485-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 08/29/2023] [Indexed: 09/30/2023] Open
Abstract
Osteoarthritis (OA), a common joint disorder with articular cartilage degradation as the main pathological change, is the major source of pain and disability worldwide. Despite current treatments, the overall treatment outcome is unsatisfactory. Thus, patients with severe OA often require joint replacement surgery. In recent years, mesenchymal stem cells (MSCs) have emerged as a promising therapeutic option for preclinical and clinical palliation of OA. MSC-derived exosomes (MSC-Exos) carrying bioactive molecules of the parental cells, including non-coding RNAs (ncRNAs) and proteins, have demonstrated a significant impact on the modulation of various physiological behaviors of cells in the joint cavity, making them promising candidates for cell-free therapy for OA. This review provides a comprehensive overview of the biosynthesis and composition of MSC-Exos and their mechanisms of action in OA. We also discussed the potential of MSC-Exos as a therapeutic tool for modulating intercellular communication in OA. Additionally, we explored bioengineering approaches to enhance MSC-Exos' therapeutic potential, which may help to overcome challenges and achieve clinically meaningful OA therapies.
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Affiliation(s)
- Zehao Zhang
- School of Clinical Medicine, Jining Medical University, Jining, 272067, Shandong, China
| | - Sheng Zhao
- School of Clinical Medicine, Jining Medical University, Jining, 272067, Shandong, China
| | - Zhaofeng Sun
- School of Clinical Medicine, Jining Medical University, Jining, 272067, Shandong, China
| | - Chuanxing Zhai
- School of Clinical Medicine, Jining Medical University, Jining, 272067, Shandong, China
| | - Jiang Xia
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, Hong Kong, SAR, China
| | - Caining Wen
- Department of Joint Surgery and Sports Medicine, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, 272029, Shandong, China.
| | - Yuge Zhang
- Department of Joint Surgery and Sports Medicine, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, 272029, Shandong, China.
| | - Yuanmin Zhang
- Department of Joint Surgery and Sports Medicine, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, 272029, Shandong, China.
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11
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Asadi N, Sadeghzadeh H, Rahmani Del Bakhshayesh A, Nezami Asl A, Dadashpour M, Karimi Hajishoreh N, Kaamyabi S, Akbarzadeh A. Preparation and characterization of propolis reinforced eggshell membrane/ GelMA composite hydrogel for biomedical applications. BMC Biotechnol 2023; 23:21. [PMID: 37434201 DOI: 10.1186/s12896-023-00788-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 06/15/2023] [Indexed: 07/13/2023] Open
Abstract
Gelatin methacrylate-based hydrogels (GelMA) were widely used in tissue engineering and regenerative medicine. However, to manipulate their various chemical and physical properties and create high-efficiency hydrogels, different materials have been used in their structure. Eggshell membrane (ESM) and propolis are two nature-derived materials that could be used to improve the various characteristics of hydrogels, especially structural and biological properties. Hence, the main purpose of this study is the development of a new type of GelMA hydrogel containing ESM and propolis, for use in regenerative medicine. In this regard, in this study, after synthesizing GelMA, the fragmented ESM fibers were added to it and the GM/EMF hydrogel was made using a photoinitiator and visible light irradiation. Finally, GM/EMF/P hydrogels were prepared by incubating GM/EMF hydrogels in the propolis solution for 24 h. After various structural, chemical, and biological characterizations, it was found that the hydrogels obtained in this study offer improved morphological, hydrophilic, thermal, mechanical, and biological properties. The developed GM/EMF/P hydrogel presented more porosity with smaller and interconnected pores compared to the other hydrogels. GM/EMF hydrogels due to possessing EMF showed compressive strength up to 25.95 ± 1.69 KPa, which is more than the compressive strength provided by GM hydrogels (24.550 ± 4.3 KPa). Also, GM/EMF/P hydrogel offered the best compressive strength (44.65 ± 3.48) due to the presence of both EMF and propolis. GM scaffold with a contact angle of about 65.41 ± 2.199 θ showed more hydrophobicity compared to GM/EMF (28.67 ± 1.58 θ), and GM/EMF/P (26.24 ± 0.73 θ) hydrogels. Also, the higher swelling percentage of GM/EMF/P hydrogels (343.197 ± 42.79) indicated the high capacity of this hydrogel to retain more water than other scaffolds. Regarding the biocompatibility of the fabricated structures, MTT assay results showed that GM/EMF/P hydrogel significantly (p-value < 0.05) supported cell viability. Based on the results, it seems that GM/EMF/P hydrogel could be a promising biomaterial candidate for use in various fields of regenerative medicine.
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Affiliation(s)
- Nahideh Asadi
- Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hadi Sadeghzadeh
- Department of Tissue Engineering, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Azizeh Rahmani Del Bakhshayesh
- Department of Tissue Engineering, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Mehdi Dadashpour
- Department of Medical Biotechnology, Faculty of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | | | - Sharif Kaamyabi
- Department of Chemistry, Farhangian University, Tehran, Iran
| | - Abolfazl Akbarzadeh
- Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.
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12
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Al-Shalawi FD, Mohamed Ariff AH, Jung DW, Mohd Ariffin MKA, Seng Kim CL, Brabazon D, Al-Osaimi MO. Biomaterials as Implants in the Orthopedic Field for Regenerative Medicine: Metal versus Synthetic Polymers. Polymers (Basel) 2023; 15:2601. [PMID: 37376247 DOI: 10.3390/polym15122601] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 05/30/2023] [Accepted: 05/31/2023] [Indexed: 06/29/2023] Open
Abstract
Patients suffering bone fractures in different parts of the body require implants that will enable similar function to that of the natural bone that they are replacing. Joint diseases (rheumatoid arthritis and osteoarthritis) also require surgical intervention with implants such as hip and knee joint replacement. Biomaterial implants are utilized to fix fractures or replace parts of the body. For the majority of these implant cases, either metal or polymer biomaterials are chosen in order to have a similar functional capacity to the original bone material. The biomaterials that are employed most often for implants of bone fracture are metals such as stainless steel and titanium, and polymers such as polyethene and polyetheretherketone (PEEK). This review compared metallic and synthetic polymer implant biomaterials that can be employed to secure load-bearing bone fractures due to their ability to withstand the mechanical stresses and strains of the body, with a focus on their classification, properties, and application.
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Affiliation(s)
- Faisal Dakhelallah Al-Shalawi
- Department of Mechanical and Manufacturing Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia
| | - Azmah Hanim Mohamed Ariff
- Department of Mechanical and Manufacturing Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia
- Research Center Advanced Engineering Materials and Composites (AEMC), Faculty of Engineering, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia
| | - Dong-Won Jung
- Faculty of Applied Energy System, Major of Mechanical Engineering, Jeju National University, 102 Jejudaehak-ro, Jeju-si 63243, Republic of Korea
| | - Mohd Khairol Anuar Mohd Ariffin
- Department of Mechanical and Manufacturing Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia
| | - Collin Looi Seng Kim
- Department of Orthopaedic, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia
| | - Dermot Brabazon
- Advanced Manufacturing Research Centre, and Advanced Processing Technology Research Centre, School of Mechanical and Manufacturing Engineering, Dublin City University, Glasnevin, D09 V209 Dublin 9, Ireland
| | - Maha Obaid Al-Osaimi
- Department of Microbiology, Faculty of Agriculture, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia
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13
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Nathan KG, Genasan K, Kamarul T. Polyvinyl Alcohol-Chitosan Scaffold for Tissue Engineering and Regenerative Medicine Application: A Review. Mar Drugs 2023; 21:md21050304. [PMID: 37233498 DOI: 10.3390/md21050304] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 04/23/2023] [Accepted: 04/24/2023] [Indexed: 05/27/2023] Open
Abstract
Tissue engineering and regenerative medicine (TERM) holds great promise for addressing the growing need for innovative therapies to treat disease conditions. To achieve this, TERM relies on various strategies and techniques. The most prominent strategy is the development of a scaffold. Polyvinyl alcohol-chitosan (PVA-CS) scaffold emerged as a promising material in this field due to its biocompatibility, versatility, and ability to support cell growth and tissue regeneration. Preclinical studies showed that the PVA-CS scaffold can be fabricated and tailored to fit the specific needs of different tissues and organs. Additionally, PVA-CS can be combined with other materials and technologies to enhance its regenerative capabilities. Furthermore, PVA-CS represents a promising therapeutic solution for developing new and innovative TERM therapies. Therefore, in this review, we summarized the potential role and functions of PVA-CS in TERM applications.
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Affiliation(s)
- Kavitha Ganesan Nathan
- Department of Orthopedic Surgery, Faculty of Medicine, University Malaya, Kuala Lumpur 50603, Malaysia
| | - Krishnamurithy Genasan
- Department of Physiology, Faculty of Medicine, University Malaya, Kuala Lumpur 50603, Malaysia
| | - Tunku Kamarul
- Department of Orthopedic Surgery, Faculty of Medicine, University Malaya, Kuala Lumpur 50603, Malaysia
- Advanced Medical and Dental Institute (AMDI), University Sains Malaysia, Bertam, Kepala Batas 13200, Malaysia
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Thijssen Q, Quaak A, Toombs J, De Vlieghere E, Parmentier L, Taylor H, Van Vlierberghe S. Volumetric Printing of Thiol-Ene Photo-Cross-Linkable Poly(ε-caprolactone): A Tunable Material Platform Serving Biomedical Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2210136. [PMID: 36827642 DOI: 10.1002/adma.202210136] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 02/10/2023] [Indexed: 05/12/2023]
Abstract
Current thoroughly described biodegradable and cross-linkable polymers mainly rely on acrylate cross-linking. However, despite the swift cross-linking kinetics of acrylates, the concomitant brittleness of the resulting materials limits their applicability. Here, photo-cross-linkable poly(ε-caprolactone) networks through orthogonal thiol-ene chemistry are introduced. The step-growth polymerized networks are tunable, predictable by means of the rubber elasticity theory and it is shown that their mechanical properties are significantly improved over their acrylate cross-linked counterparts. Tunability is introduced to the materials, by altering Mc (or the molar mass between cross-links), and its effect on the thermal properties, mechanical strength and degradability of the materials is evaluated. Moreover, excellent volumetric printability is illustrated and the smallest features obtained via volumetric 3D-printing to date are reported, for thiol-ene systems. Finally, by means of in vitro and in vivo characterization of 3D-printed constructs, it is illustrated that the volumetrically 3D-printed materials are biocompatible. This combination of mechanical stability, tunability, biocompatibility, and rapid fabrication by volumetric 3D-printing charts a new path toward bedside manufacturing of biodegradable patient-specific implants.
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Affiliation(s)
- Quinten Thijssen
- Polymer Chemistry and Biomaterials Group, Centre of Macromolecular Chemistry, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, Ghent, 9000, Belgium
| | - Astrid Quaak
- Polymer Chemistry and Biomaterials Group, Centre of Macromolecular Chemistry, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, Ghent, 9000, Belgium
| | - Joseph Toombs
- Department of Mechanical Engineering, University of California, Berkeley, 6159 Etcheverry Hall, Berkeley, CA, 94720-1740, USA
| | - Elly De Vlieghere
- Polymer Chemistry and Biomaterials Group, Centre of Macromolecular Chemistry, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, Ghent, 9000, Belgium
| | - Laurens Parmentier
- Polymer Chemistry and Biomaterials Group, Centre of Macromolecular Chemistry, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, Ghent, 9000, Belgium
| | - Hayden Taylor
- Department of Mechanical Engineering, University of California, Berkeley, 6159 Etcheverry Hall, Berkeley, CA, 94720-1740, USA
| | - Sandra Van Vlierberghe
- Polymer Chemistry and Biomaterials Group, Centre of Macromolecular Chemistry, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, Ghent, 9000, Belgium
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15
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Kladovasilakis N, Charalampous P, Boumpakis A, Kontodina T, Tsongas K, Tzetzis D, Kostavelis I, Givissis P, Tzovaras D. Development of biodegradable customized tibial scaffold with advanced architected materials utilizing additive manufacturing. J Mech Behav Biomed Mater 2023; 141:105796. [PMID: 36965217 DOI: 10.1016/j.jmbbm.2023.105796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 02/20/2023] [Accepted: 03/20/2023] [Indexed: 03/27/2023]
Abstract
In the last decade, the development of customized biodegradable scaffolds and implants has attracted increased scientific interest due to the fact that additive manufacturing technologies allow for the rapid production of implants with high geometric complexity constructed via commercial biodegradable polymers. In this study, innovative designs of tibial scaffold in form of bone-brick configuration were developed to fill the bone gap utilizing advanced architected materials and bio-inspired diffusion canals. The architected materials and canals provide high porosity, as well as a high surface area to volume ratio in the scaffold facilitating that way in the tissue regeneration process and in withstanding the applied external loads. The cellular structures applied in this work were the Schwarz Diamond (SD) and a hybrid SD&FCC hybrid cellular material, which is a completely new architected material that derived from the combination of SD and Face Centered Cubic (FCC) structures. These designs were additively manufactured utilizing two biodegradable materials namely Polylactic acid (PLA) and Polycaprolactone (PCL), using the Fused Filament Fabrication (FFF) technique, in order to avoid the surgery, for the scaffold's removal after the bone regeneration. Furthermore, the additively manufactured scaffolds were examined in terms of compatibility and assembly with the bone's physical model, as well as, in terms of mechanical behavior under realistic static loads. In addition, non-linear finite element models (FEMs) were developed based on the experimental data to accurately simulate the mechanical response of the examined scaffolds. The Finite Element Analysis (FEA) results were compared with the experimental response and afterwards the stress concentration regions were observed and identified. Τhe proposed design of scaffold with SD&FCC lattice structure made of PLA material with a relative density of 20% revealed the best overall performance, showing that it is the most suitable candidate for further investigation (in-vivo test, clinical trials, etc.) and commercialization.
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Affiliation(s)
- Nikolaos Kladovasilakis
- Centre for Research and Technology Hellas - Information Technologies Institute (CERTH/ITI), Thessaloniki, 57001, Greece; Digital Manufacturing and Materials Characterization Laboratory, School of Science and Technology, International Hellenic University, Thessaloniki, 57001, Greece.
| | - Paschalis Charalampous
- Centre for Research and Technology Hellas - Information Technologies Institute (CERTH/ITI), Thessaloniki, 57001, Greece
| | - Apostolos Boumpakis
- Centre for Research and Technology Hellas - Information Technologies Institute (CERTH/ITI), Thessaloniki, 57001, Greece
| | - Theodora Kontodina
- Centre for Research and Technology Hellas - Information Technologies Institute (CERTH/ITI), Thessaloniki, 57001, Greece
| | - Konstantinos Tsongas
- Digital Manufacturing and Materials Characterization Laboratory, School of Science and Technology, International Hellenic University, Thessaloniki, 57001, Greece; Department of Industrial Engineering and Management, School of Engineering, International Hellenic University, 57001, Thessaloniki, Greece
| | - Dimitrios Tzetzis
- Digital Manufacturing and Materials Characterization Laboratory, School of Science and Technology, International Hellenic University, Thessaloniki, 57001, Greece
| | - Ioannis Kostavelis
- Centre for Research and Technology Hellas - Information Technologies Institute (CERTH/ITI), Thessaloniki, 57001, Greece; Department of Supply Chain Management, School of Economics and Business Administration, International Hellenic University, 60100, Katerini, Greece
| | - Panagiotis Givissis
- 1st Orthopaedic Department of Aristotle University of Thessaloniki, School of Medicine, G. Papanikolaou Hospital, Exohi, Thessaloniki, 57010, Greece
| | - Dimitrios Tzovaras
- Centre for Research and Technology Hellas - Information Technologies Institute (CERTH/ITI), Thessaloniki, 57001, Greece
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16
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Horvath-Pereira BDO, Almeida GHDR, da Silva Júnior LN, do Nascimento PG, Horvath Pereira BDO, Fireman JVBT, Pereira MLDRF, Carreira ACO, Miglino MA. Biomaterials for Testicular Bioengineering: How far have we come and where do we have to go? Front Endocrinol (Lausanne) 2023; 14:1085872. [PMID: 37008920 PMCID: PMC10060902 DOI: 10.3389/fendo.2023.1085872] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 02/24/2023] [Indexed: 03/18/2023] Open
Abstract
Traditional therapeutic interventions aim to restore male fertile potential or preserve sperm viability in severe cases, such as semen cryopreservation, testicular tissue, germ cell transplantation and testicular graft. However, these techniques demonstrate several methodological, clinical, and biological limitations, that impact in their results. In this scenario, reproductive medicine has sought biotechnological alternatives applied for infertility treatment, or to improve gamete preservation and thus increase reproductive rates in vitro and in vivo. One of the main approaches employed is the biomimetic testicular tissue reconstruction, which uses tissue-engineering principles and methodologies. This strategy pursues to mimic the testicular microenvironment, simulating physiological conditions. Such approach allows male gametes maintenance in culture or produce viable grafts that can be transplanted and restore reproductive functions. In this context, the application of several biomaterials have been proposed to be used in artificial biological systems. From synthetic polymers to decellularized matrixes, each biomaterial has advantages and disadvantages regarding its application in cell culture and tissue reconstruction. Therefore, the present review aims to list the progress that has been made and the continued challenges facing testicular regenerative medicine and the preservation of male reproductive capacity, based on the development of tissue bioengineering approaches for testicular tissue microenvironment reconstruction.
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Affiliation(s)
| | | | | | - Pedro Gabriel do Nascimento
- Department of Surgery, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
| | | | | | | | - Ana Claudia Oliveira Carreira
- Department of Surgery, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
- Centre for Natural and Human Sciences, Federal University of ABC, São Paulo, Brazil
| | - Maria Angelica Miglino
- Department of Surgery, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
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17
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Alginate-Based Hydrogels and Scaffolds for Biomedical Applications. Mar Drugs 2023; 21:md21030177. [PMID: 36976226 PMCID: PMC10055882 DOI: 10.3390/md21030177] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/08/2023] [Accepted: 03/10/2023] [Indexed: 03/16/2023] Open
Abstract
Alginate is a natural polymer of marine origin and, due to its exceptional properties, has great importance as an essential component for the preparation of hydrogels and scaffolds for biomedical applications. The design of biologically interactive hydrogels and scaffolds with advanced, expected and required properties are one of the key issues for successful outcomes in the healing of injured tissues. This review paper presents the multifunctional biomedical applications of alginate-based hydrogels and scaffolds in selected areas, highlighting the key effect of alginate and its influence on the essential properties of the selected biomedical applications. The first part covers scientific achievements for alginate in dermal tissue regeneration, drug delivery systems, cancer treatment, and antimicrobials. The second part is dedicated to our scientific results obtained for the research opus of hydrogel materials for scaffolds based on alginate in synergy with different materials (polymers and bioactive agents). Alginate has proved to be an exceptional polymer for combining with other naturally occurring and synthetic polymers, as well as loading bioactive therapeutic agents to achieve dermal, controlled drug delivery, cancer treatment, and antimicrobial purposes. Our research was based on combinations of alginate with gelatin, 2-hydroxyethyl methacrylate, apatite, graphene oxide and iron(III) oxide, as well as curcumin and resveratrol as bioactive agents. Important features of the prepared scaffolds, such as morphology, porosity, absorption capacity, hydrophilicity, mechanical properties, in vitro degradation, and in vitro and in vivo biocompatibility, have shown favorable properties for the aforementioned applications, and alginate has been an important link in achieving these properties. Alginate, as a component of these systems, proved to be an indispensable factor and played an excellent “role” in the optimal adjustment of the tested properties. This study provides valuable data and information for researchers and demonstrates the importance of the role of alginate as a biomaterial in the design of hydrogels and scaffolds that are powerful medical “tools” for biomedical applications.
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Tissue Engineering Supporting Regenerative Strategies to Enhance Clinical Orthodontics and Dentofacial Orthopaedics: A Scoping, Perspective Review. Biomedicines 2023; 11:biomedicines11030795. [PMID: 36979774 PMCID: PMC10045353 DOI: 10.3390/biomedicines11030795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 02/01/2023] [Accepted: 02/20/2023] [Indexed: 03/08/2023] Open
Abstract
The personalized regenerative therapeutic strategies applicable in the structural and functional repair of maxillofacial/dental defects are expected to extend beyond the limits of what is currently possible in the management of dentofacial anomalies and treating malocclusions. The application of undifferentiated stem cells (SCs), including signaling molecule control and individualized tissue engineering based on targeted therapies, has been proposed to overcome therapeutic limitations and complications associated with treatments for craniofacial defects, including severe orthodontic discrepancies. This scoping, prospective review discusses comprehensively the current knowledge and prospects for improving clinical outcomes by the application of novel cell-required and cell-free regenerative strategies in biomedicine. The existing evidence, although scant, suggests that patients receiving an orthodontic treatment could benefit from precise tissue augmentation, allowing enhancement of tooth movement generated by orthognathic forces; faster, more predictable alignment of dental arches; optimal management of periodontal complications; and prevention of external root resorption. Ultimately, enriching orofacial tissues and “customizing” the repair of congenital/acquired defects in the craniofacial region can be vastly enhanced to provide a positive therapeutic outcome and improve patients’ quality of life.
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Huang WJ, Wang J. Development of 3D-Printed, Biodegradable, Conductive PGSA Composites for Nerve Tissue Regeneration. Macromol Biosci 2023; 23:e2200470. [PMID: 36525352 DOI: 10.1002/mabi.202200470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 12/07/2022] [Indexed: 12/23/2022]
Abstract
Nerve conduits are used to reconnect broken nerve bundles and provide protection to facilitate nerve regeneration. However, the low degradation rate and regeneration rate, as well as the requirement for secondary surgery are some of the most criticized drawbacks of existing nerve conduits. With high processing flexibility from the photo-curability, poly (glycerol sebacate) acrylate (PGSA) is a promising material with tunable mechanical properties and biocompatibility for the development of medical devices. Here, polyvinylpyrrolidone (PVP), silver nanoparticles (AgNPs), and graphene are embedded in biodegradable PGSA matrix. The polymer composites are then assessed for their electrical conductivity, biodegradability, three-dimensional-printability (3D-printability), and promotion of cell proliferation. Through the four-probe technique, it is shown that the PGSA composites are identified as highly conductive in swollen state. Furthermore, biodegradability is evaluated through enzymatic degradation and facilitated hydrolysis. Cell proliferation and guidance are significantly promoted by three-dimensional-printed microstructures and electrical stimulation on PGSA composites, especially on PGSA-PVP. Hence, microstructured nerve conduits are 3D-printed with PGSA-PVP. Guided cell growth and promoted proliferation are subsequently demonstrated by Schwann cell culture combined with electrical stimulation. Consequently, 3D-printed nerve conduits fabricated with PGSA composites hold great potential in nerve tissue regeneration through electrical stimulation.
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Affiliation(s)
- Wei-Jia Huang
- Department of Chemical Engineering, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu, ROC 30013, Taiwan
| | - Jane Wang
- Department of Chemical Engineering, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu, ROC 30013, Taiwan
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20
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Li G, Li Y, Zhang X, Gao P, Xia X, Xiao S, Wen J, Guo T, Yang W, Li J. Strontium and simvastatin dual loaded hydroxyapatite microsphere reinforced poly(ε-caprolactone) scaffolds promote vascularized bone regeneration. J Mater Chem B 2023; 11:1115-1130. [PMID: 36636931 DOI: 10.1039/d2tb02309a] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The promotion of vascular network formation in the early stages of implantation is considered a prerequisite for successful functional bone regeneration. In this study, we successfully constructed 3D printed scaffolds with strong mechanical strength and a controllable pore structure that can sustainably release strontium (Sr) ions and simvastatin (SIM) for up to 28 days by incorporation of Sr2+ and SIM-loaded hydroxyapatite microspheres (MHA) into a poly(ε-caprolactone) (PCL) matrix. In vitro cell experiments showed that Sr-doped scaffolds were beneficial to the proliferation and osteogenic differentiation of bone mesenchymal stem cells (BMSCs), an appropriate dose of SIM was beneficial to cell proliferation and angiogenesis, and a high dose of SIM was cytotoxic. The Sr- and SIM-dual-loaded scaffolds with an appropriate dose significantly induced osteogenic differentiation of BMSCs and tube formation of human umbilical vein endothelial cells (HUVECs) in vitro and promoted vascular network and functional bone formation in vivo. Ribose nucleic acid (RNA) sequencing analysis suggested that the mechanism of promotion of vascularized bone regeneration by fabricated scaffolds is that dual-loaded Sr2+ and SIM can upregulate osteogenic and vasculogenic-related genes and downregulate osteoclast-related genes, which is beneficial for vascular and new bone regeneration. The 3D printed composite scaffolds loaded with high-stability and low-cost inorganic Sr2+ ions and SIM small-molecule drugs hold great promise in the field of promoting vascularized bone regeneration.
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Affiliation(s)
- Gen Li
- Research Center for Nano-Biomaterials, Analytical and Testing Center, Sichuan University, Chengdu 610064, China.
| | - Yubao Li
- Research Center for Nano-Biomaterials, Analytical and Testing Center, Sichuan University, Chengdu 610064, China.
| | - Xianhui Zhang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education College of Bioengineering, Chongqing University, Chongqing 400044, China.
| | - Pengfei Gao
- Key Laboratory of Biorheological Science and Technology, Ministry of Education College of Bioengineering, Chongqing University, Chongqing 400044, China.
| | - Xue Xia
- Research Center for Nano-Biomaterials, Analytical and Testing Center, Sichuan University, Chengdu 610064, China.
| | - Shiqi Xiao
- Research Center for Nano-Biomaterials, Analytical and Testing Center, Sichuan University, Chengdu 610064, China.
| | - Jing Wen
- Research Center for Nano-Biomaterials, Analytical and Testing Center, Sichuan University, Chengdu 610064, China.
| | - Tao Guo
- Department of Orthopaedics, Guizhou Provincial People's hospital, Guiyang 550002, China
| | - Weihu Yang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education College of Bioengineering, Chongqing University, Chongqing 400044, China.
| | - Jidong Li
- Research Center for Nano-Biomaterials, Analytical and Testing Center, Sichuan University, Chengdu 610064, China.
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Advances in the One-Step Approach of Polymeric Materials Using Enzymatic Techniques. Polymers (Basel) 2023; 15:polym15030703. [PMID: 36772002 PMCID: PMC9922006 DOI: 10.3390/polym15030703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 01/23/2023] [Accepted: 01/27/2023] [Indexed: 01/31/2023] Open
Abstract
The formulation in which biochemical enzymes are administered in polymer science plays a key role in retaining their catalytic activity. The one-step synthesis of polymers with highly sequence-controlled enzymes is a strategy employed to provide enzymes with higher catalytic activity and thermostability in material sustainability. Enzyme-catalyzed chain growth polymerization reactions using activated monomers, protein-polymer complexation techniques, covalent and non-covalent interaction, and electrostatic interactions can provide means to develop formulations that maintain the stability of the enzyme during complex material processes. Multifarious applications of catalytic enzymes are usually attributed to their efficiency, pH, and temperature, thus, progressing with a critical structure-controlled synthesis of polymer materials. Due to the obvious economics of manufacturing and environmental sustainability, the green synthesis of enzyme-catalyzed materials has attracted significant interest. Several enzymes from microorganisms and plants via enzyme-mediated material synthesis have provided a viable alternative for the appropriate synthesis of polymers, effectively utilizing the one-step approach. This review analyzes more and deeper strategies and material technologies widely used in multi-enzyme cascade platforms for engineering polymer materials, as well as their potential industrial applications, to provide an update on current trends and gaps in the one-step synthesis of materials using catalytic enzymes.
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Poly(lactic acid) and Nanocrystalline Cellulose Methacrylated Particles for Preparation of Cryogelated and 3D-Printed Scaffolds for Tissue Engineering. Polymers (Basel) 2023; 15:polym15030651. [PMID: 36771954 PMCID: PMC9920993 DOI: 10.3390/polym15030651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/20/2023] [Accepted: 01/24/2023] [Indexed: 02/01/2023] Open
Abstract
Different parts of bones possess different properties, such as the capacity for remodeling cell content, porosity, and protein composition. For various traumatic or surgical tissue defects, the application of tissue-engineered constructs seems to be a promising strategy. Despite significant research efforts, such constructs are still rarely available in the clinic. One of the reasons is the lack of resorbable materials, whose properties can be adjusted according to the intended tissue or tissue contacts. Here, we present our first results on the development of a toolbox, by which the scaffolds with easily tunable mechanical and biological properties could be prepared. Biodegradable poly(lactic acid) and nanocrystalline cellulose methacrylated particles were obtained, characterized, and used for preparation of three-dimensional scaffolds via cryogelation and 3D printing approaches. The composition of particles-based ink for 3D printing was optimized in order to allow formation of stable materials. Both the modified-particle cytotoxicity and the matrix-supported cell adhesion were evaluated and visualized in order to confirm the perspectives of materials application.
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Ivanova EA, Dzyuman AN, Dvornichenko MV. Local biocompatibility and biochemical profile of hepatic cytolysis in subcutaneous implantation of polylactide matrices. BULLETIN OF SIBERIAN MEDICINE 2023. [DOI: 10.20538/1682-0363-2022-4-63-71] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The aim of the study was to investigate local biocompatibility and systemic effects of nonwoven polylactide (PLA) matrices on blood and liver parameters after their subcutaneous implantation in Wistar rats.Materials and methods. Bioabsorbable fibrous PLA matrices were produced by electrospinning and had dimensions (10 × 10 mm², thickness of no more than 0.5 mm; fiber diameter in the matrix ~1 μm) appropriate for subcutaneous implantation in white laboratory rats. Polymer implants were sterilized in ethylene oxide vapor. Thirty days after the implantation of PLA matrices, local biocompatibility according to GOST ISO 10993-6-2011, cellular parameters (total leukocyte count, hemogram, erythrocyte count, hemoglobin concentration), and biochemical blood parameters (lactate concentration, alanine aminotransferase (ALT) and aspartate aminotransferase (AST) levels) were studied, and a standard histologic evaluation of the liver was performed.Results. PLA matrix samples were mild local irritants on a scale of 1–1.9 points according to GOST ISO 10993-6-2011 criteria 30 days after the subcutaneous implantation. The median density of distribution of multinucleated giant cells (MNGCs) in the connective tissue around and in PLA matrices was 1,500 (1,350; 1,550) per 1 mm² of a slice. Pronounced leukocytic reaction due to lymphocytosis was noted (an increase by 1.7 times compared with a sham-operated (SO) control group, р < 0.02). The absence of a significant neutrophil count in the blood revealed sterile inflammation proceeding in the subcutaneous tissue around the PLA materials. Normalization of hepatic cytolysis markers (ALT and AST activity) in the blood without pronounced changes in the structure of the liver and the number of binuclear hepatocytes was noted. These markers were increased in SO controls (ALT up to 123% and AST up to 142%, p < 0.001 compared with values in the intact group).Conclusion. Nonwoven PLA matrices are biocompatible with subcutaneous tissue, undergo bioresorption by MNGCs, and have a distant protective effect on the functional state of the liver in laboratory animals. Hypotheses on the detected systemic effect during subcutaneous implantation of PLA matrices were discussed; however, specific mechanisms require further study.
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Voniatis C, Závoti O, Manikion K, Budavári B, Hajdu AJ. Fabrication of Mechanically Enhanced, Suturable, Fibrous Hydrogel Membranes. MEMBRANES 2023; 13:116. [PMID: 36676923 PMCID: PMC9867240 DOI: 10.3390/membranes13010116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/09/2023] [Accepted: 01/10/2023] [Indexed: 06/17/2023]
Abstract
Poly(vinyl-alcohol) hydrogels have already been successfully utilised as drug carrier systems and tissue engineering scaffolds. However, lacking mechanical strength and suturability hinders any prospects for clinical and surgical applications. The objective of this work was to fabricate mechanically robust PVA membranes, which could also withstand surgical manipulation and suturing. Electrospun membranes and control hydrogels were produced with 61 kDa PVA. Using a high-speed rotating cylindrical collector, we achieved fibre alignment (fibre diameter: 300 ± 50 nm). Subsequently, we created multilayered samples with different orientations to achieve multidirectional reinforcement. Finally, utilising glutaraldehyde as a cross-linker, we created insoluble fibrous-hydrogel membranes. Mechanical studies were performed, confirming a fourfold increase in the specific loading capacities (from 0.21 to 0.84 Nm2/g) in the case of the monolayer samples. The multilayered membranes exhibited increased resistance from both horizontal and vertical directions, which varies according to the specific arrangement. Finally, the cross-linked fibrous hydrogel samples not only exhibited specific loading capacities significantly higher than their counterpart bulk hydrogels but successfully withstood suturing. Although cross-linking optimisation and animal experiments are required, these membranes have great prospects as alternatives to current surgical meshes, while the methodology could also be applied in other systems as well.
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Affiliation(s)
- Constantinos Voniatis
- Department of Surgery, Transplantation and Gastroenterology, Semmelweis University, 1082 Budapest, Hungary
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, 1085 Budapest, Hungary
| | - Olivér Závoti
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, 1085 Budapest, Hungary
| | - Kenigen Manikion
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, 1085 Budapest, Hungary
| | - Bálint Budavári
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, 1085 Budapest, Hungary
| | - Angela Jedlovszky Hajdu
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, 1085 Budapest, Hungary
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Calore AR, Srinivas V, Groenendijk L, Serafim A, Stancu IC, Wilbers A, Leoné N, Sanchez AA, Auhl D, Mota C, Bernaerts K, Harings JAW, Moroni L. Manufacturing of scaffolds with interconnected internal open porosity and surface roughness. Acta Biomater 2023; 156:158-176. [PMID: 35868592 DOI: 10.1016/j.actbio.2022.07.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 07/06/2022] [Accepted: 07/07/2022] [Indexed: 01/18/2023]
Abstract
Manufacturing of three-dimensional scaffolds with multiple levels of porosity are an advantage in tissue regeneration approaches to influence cell behavior. Three-dimensional scaffolds with surface roughness and intra-filament open porosity were successfully fabricated by additive manufacturing combined with chemical foaming and porogen leaching without the need of toxic solvents. The decomposition of sodium citrate, a chemical blowing agent, generated pores within the scaffold filaments, which were interconnected and opened to the external environment by leaching of a water-soluble sacrificial phase, as confirmed by micro-CT and buoyancy measurements. The additional porosity did not result in lower elastic modulus, but in higher strain at maximum load, i.e. scaffold ductility. Human mesenchymal stromal cells cultured for 24 h adhered in greater numbers on these scaffolds when compared to plain additive-manufactured ones, irrespectively of the scaffold pre-treatment method. Additionally, they showed a more spread and random morphology, which is known to influence cell fate. Cells cultured for a longer period exhibited enhanced metabolic activity while secreting higher osteogenic markers after 7 days in culture. STATEMENT OF SIGNIFICANCE: Inspired by the function of hierarchical cellular structures in natural materials, this work elucidates the development of scaffolds with multiscale porosity by combining in-situ foaming and additive manufacturing, and successive porogen leaching. The resulting scaffolds displayed enhanced mechanical toughness and multiscale pore network interconnectivity, combined with early differentiation of adult mesenchymal stromal cells into the osteogenic lineage.
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Affiliation(s)
- Andrea Roberto Calore
- MERLN Institute for Technology-Inspired Regenerative Medicine, Complex Tissue Regeneration department, Maastricht University, Maastricht, the Netherlands; Aachen-Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, Geleen, the Netherlands
| | - Varun Srinivas
- Aachen-Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, Geleen, the Netherlands
| | - Linda Groenendijk
- Aachen-Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, Geleen, the Netherlands
| | - Andrada Serafim
- Advanced Polymer Materials Group, University Politehnica of Bucharest, Romania
| | | | | | - Nils Leoné
- MERLN Institute for Technology-Inspired Regenerative Medicine, Complex Tissue Regeneration department, Maastricht University, Maastricht, the Netherlands
| | - Ane Albillos Sanchez
- MERLN Institute for Technology-Inspired Regenerative Medicine, Complex Tissue Regeneration department, Maastricht University, Maastricht, the Netherlands
| | - Dietmar Auhl
- Aachen-Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, Geleen, the Netherlands; Polymerwerkstoffe und -technologien, Technische Universität Berlin, the Netherlands
| | - Carlos Mota
- MERLN Institute for Technology-Inspired Regenerative Medicine, Complex Tissue Regeneration department, Maastricht University, Maastricht, the Netherlands
| | - Katrien Bernaerts
- Aachen-Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, Geleen, the Netherlands
| | - Jules A W Harings
- Aachen-Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, Geleen, the Netherlands.
| | - Lorenzo Moroni
- MERLN Institute for Technology-Inspired Regenerative Medicine, Complex Tissue Regeneration department, Maastricht University, Maastricht, the Netherlands.
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Sasmal PK, Ganguly S. Polymer in hemostasis and follow‐up wound healing. J Appl Polym Sci 2023. [DOI: 10.1002/app.53559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
| | - Somenath Ganguly
- Department of Chemical Engineering Indian Institute of Technology Kharagpur India
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Lin CW, Wu PT, Chuang EY, Fan YJ, Yu J. Design and Investigation of an Eco-Friendly Wound Dressing Composed of Green Bioresources- Soy Protein, Tapioca Starch, and Gellan Gum. Macromol Biosci 2022; 22:e2200288. [PMID: 36106681 DOI: 10.1002/mabi.202200288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 09/03/2022] [Indexed: 01/15/2023]
Abstract
In the fields of biomedicine and tissue engineering, natural polymer-based tissue-engineered scaffolds are used in multiple applications. As a plant-derived polymer, soy protein, containing multiple amino acids, is structurally similar to components of the extra-cellular matrix (ECM) of tissues. It is biological safety provided a good potential to be material for pure natural scaffolds. Moreover, as a protein, the properties of soy protein can be easily adjusted by modifying the functional groups on it. In addition, by blending soy protein with other synthetic and natural polymers, the mechanical characteristics and bioactive behavior of scaffolds can be facilitated for a variety of bio-applications. In this research, soy protein and polysaccharides tapioca starch are used, and gellan gum to develop a protein-based composite scaffold for cell engineering. The morphology and surface chemical composition are characterized via micro-computed tomography (micro-CT), scanning electron microscope (SEM), and fourier-transform infrared (FTIR) spectroscopy. The soy/tapioca/gellan gum (STG) composite scaffolds selectively help the adhesion and proliferation of L929 fibroblast cells while improving the migration of L929 fibroblast cells in STG composite scaffolds as the increase of soy protein proportion of the scaffold. In addition, STG composite scaffolds show great potential in the wound healing model to enhance rapid epithelialization and tissue granulation.
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Affiliation(s)
- Che-Wei Lin
- School of Biomedical Engineering, Taipei Medical University, Taipei, 10675, Taiwan
| | - Po-Ting Wu
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania, 19104, USA
| | - Er-Yuan Chuang
- School of Biomedical Engineering, Taipei Medical University, Taipei, 10675, Taiwan
| | - Yu-Jui Fan
- School of Biomedical Engineering, Taipei Medical University, Taipei, 10675, Taiwan
| | - Jiashing Yu
- Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan
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Surface Modification of Electrospun Bioresorbable and Biostable Scaffolds by Pulsed DC Magnetron Sputtering of Titanium for Gingival Tissue Regeneration. Polymers (Basel) 2022; 14:polym14224922. [PMID: 36433049 PMCID: PMC9698656 DOI: 10.3390/polym14224922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 11/10/2022] [Accepted: 11/11/2022] [Indexed: 11/16/2022] Open
Abstract
In this study, polymer scaffolds were fabricated from biodegradable poly(lactide-co-glycolide) (PLGA) and from non-biodegradable vinylidene fluoride-tetrafluoroethylene (VDF-TeFE) by electrospinning. These polymer scaffolds were subsequently surface-modified by sputtering titanium targets in an argon atmosphere. Direct current pulsed magnetron sputtering was applied to prevent a significant influence of discharge plasma on the morphology and mechanical properties of the nonwoven polymer scaffolds. The scaffolds with initially hydrophobic properties show higher hydrophilicity and absorbing properties after surface modification with titanium. The surface modification by titanium significantly increases the cell adhesion of both the biodegradable and the non-biodegradable scaffolds. Immunocytochemistry investigations of human gingival fibroblast cells on the surface-modified scaffolds indicate that a PLGA scaffold exhibits higher cell adhesion than a VDF-TeFE scaffold.
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Fu H, Yu B, Wang H, Tong H, Jiang L, Zhang Y, Meng G, Sun M, Lin J. Knowledge domain and hotspots concerning photosensitive hydrogels for tissue engineering applications: A bibliometric and visualized analysis (1996-2022). Front Bioeng Biotechnol 2022; 10:1067111. [DOI: 10.3389/fbioe.2022.1067111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 10/31/2022] [Indexed: 11/16/2022] Open
Abstract
Objective: The aim of tissue engineering (TE) is to replace the damaged tissues or failed organs, or restore their missing functions. The important means to achieve this aim is to integrate biomaterials and life elements. Hydrogels are very attractive biomaterials in the field of TE. In particular, engineering extracellular matrices (ECMs) formed by photosensitive hydrogels have captivated much attention, because photopolymerization has many advantages over traditional polymerization approaches, such as rapidity of reaction, spatiotemporal controllability of polymerization process, and operability at physiological temperature, especially it can realize the fabrications of engineering ECMs in the presence of living cells. There have been many excellent reviews on the applications of photosensitive hydrogels in TE in recent years, however, it is inevitable that researchers may have left out many important facts due to exploring the literature from one or a few aspects. It is also a great challenge for researchers to explore the internal relationships among countries, institutions, authors, and references from a large number of literatures in related fields. Therefore, bibliometrics may be a powerful tool to solve the above problems. A bibliometric and visualized analysis of publications concerning the photosensitive hydrogels for TE applications was performed, and the knowledge domain, research hotspots and frontiers in this topic were identified according to the analysis results.Methods: We identified and retrieved the publications regarding the photosensitive hydrogels for TE applications between 1996 and 2022 from Web of Science Core Collection (WoSCC). Bibliometric and visualized analysis employing CiteSpace software and R-language package Bibliometrix were performed in this study.Results: 778 publications meeting the eligibility criteria were identified and retrieved from WoSCC. Among those, 2844 authors worldwide participated in the studies in this field, accompanied by an average annual article growth rate of 15.35%. The articles were co-authored by 800 institutions from 46 countries/regions, and the United States published the most, followed by China and South Korea. As the two countries that published the most papers, the United States and China could further strengthen cooperation in this field. Univ Colorado published the most articles (n = 150), accounting for 19.28% of the total. The articles were distributed in 112 journals, among which Biomaterials (n = 66) published the most articles, followed by Acta Biomaterialia (n = 54) and Journal of Biomedical Materials Research Part A (n = 42). The top 10 journals published 47.8% of the 778 articles. The most prolific author was Anseth K (n = 33), followed by Khademhosseini A (n = 29) and Bryant S (n = 22). A total of 1443 keywords were extracted from the 778 articles and the keyword with the highest centrality was “extracellular matrix” (centrality: 0.12). The keywords appeared recently with strong citation bursts were “gelatin”, “3d printing” and “3d bioprinting”, representing the current research hotspots in this field. “Gelma”, “3d printing” and “thiol-ene” were the research frontiers in recent years.Conclusion: This bibliometric and visualized study offered a comprehensive understanding of publications regarding the photosensitive hydrogels for TE applications from 1996 to 2022, including the knowledge domain, research hotspots and frontiers in this filed. The outcome of this study would provide insights for scholars in the related research filed.
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Chen X, Huang Z, Yang Q, Zeng X, Bai R, Wang L. 3D biodegradable shape changing composite scaffold with programmable porous structures for bone engineering. Biomed Mater 2022; 17. [DOI: 10.1088/1748-605x/aca133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 11/08/2022] [Indexed: 11/19/2022]
Abstract
Abstract
This study developed a biodegradable composite porous polyurethane scaffold based on polycaprolactone and polyethylene glycol by sequential in-situ foaming salt leaching and freeze-drying process with responsive shape changing performance. Biomineral hydroxyapatite (HA) was introduced into the polyurethane matrix as inorganic fillers. Infrared spectroscopy results proved a successful synthesis, scanning electron microscopy showed that the scaffold’s porosity decreased with the addition of HA while the average pore size increased. X-ray diffraction and differential scanning calorimetry showed that the addition of HA lowered the melting point of the scaffold, resulting in a transition temperature close to the human body temperature. From the bending experiments, it could be demonstrated that PUHA20 has excellent shape memory performance with shape fixity ratio >98.9% and shape recovery ratio >96.2%. Interestingly, the shape-changing capacity could be influenced by the porous structures with variation of HA content. The shape recovery speed was further accelerated when the material was immersed in phosphate buffered saline at 37 °C. Additionally, in vitro mineralization experiments showed that the scaffold incorporating HA had good osteoconductivity, and implantation assessment proved that scaffolds had good in vivo biocompatibility. This scaffold is a promising candidate for implantation of bone defects.
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Vuković JS, Filipović VV, Babić Radić MM, Vukomanović M, Milivojevic D, Ilic-Tomic T, Nikodinovic-Runic J, Tomić SL. In Vitro and In Vivo Biocompatible and Controlled Resveratrol Release Performances of HEMA/Alginate and HEMA/Gelatin IPN Hydrogel Scaffolds. Polymers (Basel) 2022; 14:polym14204459. [PMID: 36298041 PMCID: PMC9610835 DOI: 10.3390/polym14204459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 10/02/2022] [Accepted: 10/17/2022] [Indexed: 01/19/2023] Open
Abstract
Scaffold hydrogel biomaterials designed to have advantageous biofunctional properties, which can be applied for controlled bioactive agent release, represent an important concept in biomedical tissue engineering. Our goal was to create scaffolding materials that mimic living tissue for biomedical utilization. In this study, two novel series of interpenetrating hydrogel networks (IPNs) based on 2-hydroxyethyl methacrylate/gelatin and 2-hydroxyethyl methacrylate/alginate were crosslinked using N-ethyl-N'-(3-dimethyl aminopropyl)carbodiimide hydrochloride (EDC) and N-hydroxysuccinimide (NHS). Characterization included examining the effects of crosslinker type and concentration on structure, morphological and mechanical properties, in vitro swelling, hydrophilicity as well as on the in vitro cell viability (fibroblast cells) and in vivo (Caenorhabditis elegans) interactions of novel biomaterials. The engineered IPN hydrogel scaffolds show an interconnected pore morphology and porosity range of 62.36 to 85.20%, favorable in vitro swelling capacity, full hydrophilicity, and Young's modulus values in the range of 1.40 to 7.50 MPa. In vitro assay on healthy human fibroblast (MRC5 cells) by MTT test and in vivo (Caenorhabditis elegans) survival assays show the advantageous biocompatible properties of novel IPN hydrogel scaffolds. Furthermore, in vitro controlled release study of the therapeutic agent resveratrol showed that these novel scaffolding systems are suitable controlled release platforms. The results revealed that the use of EDC and the combination of EDC/NHS crosslinkers can be applied to prepare and tune the properties of the IPN 2-hydroxyethyl methacrylate/alginate and 2-hydroxyethyl methacrylate/gelatin hydrogel scaffolds series, which have shown great potential for biomedical engineering applications.
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Affiliation(s)
- Jovana S. Vuković
- University of Belgrade, Faculty of Technology and Metallurgy, Karnegijeva 4, 11000 Belgrade, Serbia
| | - Vuk V. Filipović
- University of Belgrade, Institute of Molecular Genetics and Genetic Engineering, Vojvode Stepe 444a, 11000 Belgrade, Serbia
| | - Marija M. Babić Radić
- University of Belgrade, Faculty of Technology and Metallurgy, Karnegijeva 4, 11000 Belgrade, Serbia
| | - Marija Vukomanović
- Advanced Materials Department, Jožef Stefan Institute, Jamova Cesta 39, 1000 Ljubljana, Slovenia
| | - Dusan Milivojevic
- University of Belgrade, Institute of Molecular Genetics and Genetic Engineering, Vojvode Stepe 444a, 11000 Belgrade, Serbia
| | - Tatjana Ilic-Tomic
- University of Belgrade, Institute of Molecular Genetics and Genetic Engineering, Vojvode Stepe 444a, 11000 Belgrade, Serbia
| | - Jasmina Nikodinovic-Runic
- University of Belgrade, Institute of Molecular Genetics and Genetic Engineering, Vojvode Stepe 444a, 11000 Belgrade, Serbia
| | - Simonida Lj. Tomić
- University of Belgrade, Faculty of Technology and Metallurgy, Karnegijeva 4, 11000 Belgrade, Serbia
- Correspondence: ; Tel.: +381-11-3303-630
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García-Cerna S, Sánchez-Pacheco U, Meneses-Acosta A, Rojas-García J, Campillo-Illanes B, Segura-González D, Peña-Malacara C. Evaluation of Poly-3-Hydroxybutyrate (P3HB) Scaffolds Used for Epidermal Cells Growth as Potential Biomatrix. Polymers (Basel) 2022; 14:polym14194021. [PMID: 36235969 PMCID: PMC9572615 DOI: 10.3390/polym14194021] [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: 08/22/2022] [Revised: 09/13/2022] [Accepted: 09/20/2022] [Indexed: 11/16/2022] Open
Abstract
Advances in tissue engineering have made possible the construction of organs and tissues with the use of biomaterials and cells. Three important elements are considered: a specific cell culture, an adequate environment, and a scaffold. The present study aimed to develop P3HB scaffolds by 3D printing and evaluate their biocompatibility with HaCaT epidermal cells, as a potential model that allows the formation of functional tissue. By using a method of extraction and purification with ethanol and acetone, a biopolymer having suitable properties for use as a tissue support was obtained. This polymer exhibited a higher molecular weight (1500 kDa) and lower contact angle (less than 90°) compared to the material obtained using the conventional method. The biocompatibility analysis reveals that the scaffold obtained using the ethanol–acetone method and produced by 3D printing without pores was not cytotoxic, did not self-degrade, and allowed high homogenous cell proliferation of HaCaT cells. In summary, it is possible to conclude that the P3HB scaffold obtained by 3D printing and a simplified extraction method is a suitable support for the homogeneous development of HaCaT keratinocyte cell lineage, which would allow the evaluation of this material to be used as a biomatrix for tissue engineering.
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Affiliation(s)
- Sandra García-Cerna
- Laboratorio 7 de la Facultad de Farmacia, Universidad Autonoma del Estado de Morelos, Avenida Universidad No. 1001, Chamilpa, Cuernavaca C.P. 62209, Morelos, Mexico
| | - Uriel Sánchez-Pacheco
- Laboratorio 7 de la Facultad de Farmacia, Universidad Autonoma del Estado de Morelos, Avenida Universidad No. 1001, Chamilpa, Cuernavaca C.P. 62209, Morelos, Mexico
| | - Angélica Meneses-Acosta
- Laboratorio 7 de la Facultad de Farmacia, Universidad Autonoma del Estado de Morelos, Avenida Universidad No. 1001, Chamilpa, Cuernavaca C.P. 62209, Morelos, Mexico
| | - José Rojas-García
- CIATEQ A. C. Plasticos y Materiales Avanzados. Av. Del Retablo 150, Queretaro C.P. 76150, Queretaro, Mexico
| | - Bernardo Campillo-Illanes
- Instituto de Ciencias Fisicas, Universidad Nacional Autonoma de Mexico, Avenida Universidad S/N, Chamilpa, Cuernavaca C.P. 62210, Morelos, Mexico
| | - Daniel Segura-González
- Departamento de Ingenieria Celular y Biocatalisis, Instituto de Biotecnologia, Universidad Nacional Autonoma de Mexico, Apdo. Post. 510-3, Cuernavaca C.P. 62250, Morelos, Mexico
| | - Carlos Peña-Malacara
- Departamento de Ingenieria Celular y Biocatalisis, Instituto de Biotecnologia, Universidad Nacional Autonoma de Mexico, Apdo. Post. 510-3, Cuernavaca C.P. 62250, Morelos, Mexico
- Correspondence: ; Tel.: +52-(777)-329-1617
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Jing X, Fu H, Yu B, Sun M, Wang L. Two-photon polymerization for 3D biomedical scaffolds: Overview and updates. Front Bioeng Biotechnol 2022; 10:994355. [PMID: 36072288 PMCID: PMC9441635 DOI: 10.3389/fbioe.2022.994355] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 07/29/2022] [Indexed: 01/23/2023] Open
Abstract
The needs for high-resolution, well-defined and complex 3D microstructures in diverse fields call for the rapid development of novel 3D microfabrication techniques. Among those, two-photon polymerization (TPP) attracted extensive attention owing to its unique and useful characteristics. As an approach to implementing additive manufacturing, TPP has truly 3D writing ability to fabricate artificially designed constructs with arbitrary geometry. The spatial resolution of the manufactured structures via TPP can exceed the diffraction limit. The 3D structures fabricated by TPP could properly mimic the microenvironment of natural extracellular matrix, providing powerful tools for the study of cell behavior. TPP can meet the requirements of manufacturing technique for 3D scaffolds (engineering cell culture matrices) used in cytobiology, tissue engineering and regenerative medicine. In this review, we demonstrated the development in 3D microfabrication techniques and we presented an overview of the applications of TPP as an advanced manufacturing technique in complex 3D biomedical scaffolds fabrication. Given this multidisciplinary field, we discussed the perspectives of physics, materials science, chemistry, biomedicine and mechanical engineering. Additionally, we dived into the principles of tow-photon absorption (TPA) and TPP, requirements of 3D biomedical scaffolders, developed-to-date materials and chemical approaches used by TPP and manufacturing strategies based on mechanical engineering. In the end, we draw out the limitations of TPP on 3D manufacturing for now along with some prospects of its future outlook towards the fabrication of 3D biomedical scaffolds.
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Affiliation(s)
- Xian Jing
- Key Laboratory of Micro/Nano and Ultra-precision Manufacturing, School of Mechatronic Engineering, Changchun University of Technology, Changchun, Jilin, China
| | - Hongxun Fu
- Key Laboratory of Micro/Nano and Ultra-precision Manufacturing, School of Mechatronic Engineering, Changchun University of Technology, Changchun, Jilin, China
| | - Baojun Yu
- Key Laboratory of Micro/Nano and Ultra-precision Manufacturing, School of Mechatronic Engineering, Changchun University of Technology, Changchun, Jilin, China
- *Correspondence: Baojun Yu,
| | - Meiyan Sun
- College of Laboratory Medicine, Jilin Medical University, Jilin, China
| | - Liye Wang
- College of Pharmacy, University of Houston, Houston, TX, United States
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Nemets EA, Lazhko AE, Grigoriev AM, Basok YB, Kirillova AD, Sevastianov VI. Biocompatible and functional properties of a microdispersed tissue-specific 3D matrix from decellularized porcine cartilage. RUSSIAN JOURNAL OF TRANSPLANTOLOGY AND ARTIFICIAL ORGANS 2022. [DOI: 10.15825/1995-1191-2022-4-73-84] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In contrast to decellularization of soft tissues for use as tissue-specific matrices in the creation of tissue-engineered constructs, decellularization of cartilage tissue requires several processing techniques, which can negatively affect the biocompatibility and functional properties of the native extracellular matrix (ECM).Objective: to study the biocompatible and functional properties of microdispersed tissue-specific 3D matrix from a porcine cartilage that is decellularized by sequential use of chemical, physical and enzymatic techniques.Materials and methods. For decellularization, microdispersed cartilage particles (MCPs), obtained by cryomilling, were incubated in detergent solutions (sodium dodecyl sulfate and Triton X-100), then treated with supercritical carbon dioxide (scCO2) with 10% ethanol and DNase I. The Ames test (Salmonella typhimurium reverse mutation assay) was used to determine the genotoxicity of decellularized microdispersed cartilage particles (dMCPs). Local and general toxic effects, as well as resorption of dMCPs were studied in vivo on sexually mature outbred rats. Decellularized MCP specimens (10 mg) were implanted into the thigh muscle tissue. Viability of human adipose-derived mesenchymal stem/stromal cells (hAdMSCs), when cultured on dMCPs, was analyzed by in vivo microscopy, stained with fluorescent Calcein AM dye. Cell metabolic activity was assessed using PrestoBlue™ Cell Viability Reagent.Results. It has been proven that porcine dMCPs implanted in rat muscle after treatment with scCO2 do not exhibit local and general toxic effects, and do not show genotoxicity and negative effects on the reproductive system of animals. After 6 months of in vivo experiment, most (87%) of the implanted decellularized cartilage was resorbed. It was shown that the resulting matrices are able to support adhesion and proliferation of hAdMSCs. Conclusion. Porcine dMCP specimens are suitable for biocompatible medical products in terms of local and general toxic effects, genotoxicity and reproductive toxicity, and can be used as a matrix for creating cell- and tissue-engineered cartilage constructs.
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Affiliation(s)
- E. A. Nemets
- Shumakov National Medical Research Center of Transplantology and Artificial Organs
| | | | - A. M. Grigoriev
- Shumakov National Medical Research Center of Transplantology and Artificial Organs
| | - Yu. B. Basok
- Shumakov National Medical Research Center of Transplantology and Artificial Organs
| | - A. D. Kirillova
- Shumakov National Medical Research Center of Transplantology and Artificial Organs
| | - V. I. Sevastianov
- Shumakov National Medical Research Center of Transplantology and Artificial Organs; Institute of Biomedical Research and Technology
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Golshayan NS, Karbasi S, Masaeli E, Bahremandi-Toloue E, Nasr-Esfahani MH, Rafienia M. Evaluation of the effects of glucosamine sulfate on poly(3- hydroxybutyrate) -chitosan/carbon nanotubes electrospun scaffold for cartilage tissue engineering applications. POLYM-PLAST TECH MAT 2022. [DOI: 10.1080/25740881.2022.2046086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Affiliation(s)
- Negin Sadat Golshayan
- Department of Biomaterials and Tissue Engineering, School of Advanced Technologies in Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Saeed Karbasi
- Department of Biomaterials and Tissue Engineering, School of Advanced Technologies in Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
- Dental Implants Research Center, Dental Research Institute, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, Australia
| | - Elahe Masaeli
- Department of Animal Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Elahe Bahremandi-Toloue
- Department of Biomaterials and Tissue Engineering, School of Advanced Technologies in Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohammad Hossein Nasr-Esfahani
- Department of Animal Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Mohammad Rafienia
- Department of Biomaterials and Tissue Engineering, School of Advanced Technologies in Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
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36
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Advanced Biomaterials, Coatings, and Techniques: Applications in Medicine and Dentistry. COATINGS 2022. [DOI: 10.3390/coatings12060797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The field of biomaterials is very extensive, encompassing both the materials themselves and the manufacturing methods, which are constantly developing [...]
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Furdella KJ, Higuchi S, Kim K, Doetschman T, Wagner WR, Vande Geest JP. ACUTE ELUTION OF TGFβ2 AFFECTS THE SMOOTH MUSCLE CELLS IN A COMPLIANCE-MATCHED VASCULAR GRAFT. Tissue Eng Part A 2022; 28:640-650. [PMID: 35521649 DOI: 10.1089/ten.tea.2021.0161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Transforming growth factor beta 2 (TGFβ2) is a pleiotropic growth factor that plays a vital role in smooth muscle cell (SMC) function. Our prior in vitro work has shown that SMC response can be modulated with TGFβ2 stimulation in a dose dependent manner. In particular, we have shown that increasing concentrations of TGFβ2 shift SMCs from a migratory to a synthetic behavior. In this work, electrospun compliance-matched and hypocompliant TGFβ2-eluting TEVGs were implanted into Sprague Dawley rats for 5 days to observe SMC population and collagen production. TEVGs were fabricated using a combined computational and experimental approach that varied the ratio of gelatin:polycaprolactone to be either compliance-matched or twice as stiff as rat aorta (hypocompliant). TGFβ2 concentrations of 0, 10, 100 ng/mg were added to both graft types (n=3 in each group) and imaged in vivo using ultrasound. Histological markers (SMC, macrophage, collagen, and elastin) were evaluated following explantation at 5 days. In vivo ultrasound showed that compliance-matched TEVGs became stiffer as TGFβ2 increased (100 ng/mg TEVGS compared to rat aorta, p<0.01) while all hypocompliant grafts remained stiffer than control rat aorta. In vivo velocity and diameter were also not significantly different than control vessels. The compliance-matched 10 ng/mg group had an elevated SMC signal (myosin heavy chain) compared to the 0 and 100 ng/mg grafts (p=0.0009 & 0.0006 ). Compliance-matched TEVGs containing 100 ng/mg TGFβ2 had an increase in collagen production (p<0.01), general immune response (p<0.05), and a decrease in SMC population to the 0 and 10 ng/mg groups. All hypocompliant groups were found to be similar, suggesting a lower rate of TGFβ2 release in these TEVGs. Our results suggest that TGFβ2 can modulate in vivo SMC phenotype over an acute implantation period, which is consistent with our prior in vitro work. To the author's knowledge, this is first in vivo rat study that evaluates a TGFβ2-eluting TEVG.
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Affiliation(s)
- Kenneth John Furdella
- University of Pittsburgh Swanson School of Engineering, 110071, Bioengineering, Pittsburgh, Pennsylvania, United States;
| | - Shinichi Higuchi
- University of Pittsburgh Swanson School of Engineering, 110071, McGowan Institute for Regenerative Medicine, Pittsburgh, Pennsylvania, United States;
| | - Kang Kim
- University of Pittsburgh Swanson School of Engineering, 110071, Department of Bioengineering, Pittsburgh, Pennsylvania, United States;
| | - Tom Doetschman
- University of Arizona Biochemistry and Molecular and Cellular Biology program, 242717, Tucson, Arizona, United States;
| | - William R Wagner
- University of Pittsburgh, 6614, McGowan Institute for Regenerative Medicine, Pittsburgh, Pennsylvania, United States;
| | - Jonathan P Vande Geest
- University of Pittsburgh Swanson School of Engineering, 110071, Bioengineering, Pittsburgh, Pennsylvania, United States;
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Atari M, Mohammadalizadeh Z, Zargar Kharazi A, Haghjooy Javanmard S. The effect of different solvent systems on physical properties of electrospun poly(glycerol sebacate)/poly(ɛ-caprolactone) blend. POLYM-PLAST TECH MAT 2022. [DOI: 10.1080/25740881.2021.2022161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Affiliation(s)
- Mehdi Atari
- Department of Materials Engineering, Isfahan University of Technology, Isfahan, Iran
- Applied Physiology Research Center, Isfahan Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Zahra Mohammadalizadeh
- Department of Biomaterials, Nanotechnology and Tissue Engineering, School of Advanced Medical Technology, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Anoushe Zargar Kharazi
- Applied Physiology Research Center, Isfahan Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
- Department of Biomaterials, Nanotechnology and Tissue Engineering, School of Advanced Medical Technology, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Shaghayegh Haghjooy Javanmard
- Applied Physiology Research Center, Isfahan Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
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Grivet-Brancot A, Boffito M, Ciardelli G. Use of Polyesters in Fused Deposition Modeling for Biomedical Applications. Macromol Biosci 2022; 22:e2200039. [PMID: 35488769 DOI: 10.1002/mabi.202200039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 04/11/2022] [Indexed: 11/09/2022]
Abstract
In recent years, 3D printing techniques experienced a growing interest in several sectors, including the biomedical one. Their main advantage resides in the possibility to obtain complex and personalized structures in a cost-effective way impossible to achieve with traditional production methods. This is especially true for Fused Deposition Modeling (FDM), one of the most diffused 3D printing methods. The easy customization of the final products' geometry, composition and physico-chemical properties is particularly interesting for the increasingly personalized approach adopted in modern medicine. Thermoplastic polymers are the preferred choice for FDM applications, and a wide selection of biocompatible and biodegradable materials is available to this aim. Moreover, these polymers can also be easily modified before and after printing to better suit the body environment and the mechanical properties of biological tissues. This review focuses on the use of thermoplastic aliphatic polyesters for FDM applications in the biomedical field. In detail, the use of poly(ε-caprolactone), poly(lactic acid), poly(lactic-co-glycolic acid), poly(hydroxyalkanoate)s, thermo-plastic poly(ester urethane)s and their blends has been thoroughly surveyed, with particular attention to their main features, applicability and workability. The state-of-the-art is presented and current challenges in integrating the additive manufacturing technology in the medical practice are discussed. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Arianna Grivet-Brancot
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Corso Duca degli Abruzzi, 24, Torino, 10129, Italy.,Department of Surgical Sciences, Università di Torino, Corso Dogliotti 14, Torino, 10126, Italy
| | - Monica Boffito
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Corso Duca degli Abruzzi, 24, Torino, 10129, Italy
| | - Gianluca Ciardelli
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Corso Duca degli Abruzzi, 24, Torino, 10129, Italy
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Kh. Kara G, Tadjarodi A, Kehtari M. Designing a novel 3D nanofibrous scaffold based on nanoalloy AuAg NPs (AuAg@ PAN NFs) for osteogenic differentiation of human adipose derived mesenchymal stem cells (hADMSCs). Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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41
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Three-dimensional scaffolds for tissue bioengineering cartilages. Biocybern Biomed Eng 2022. [DOI: 10.1016/j.bbe.2022.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Kumar Reddy Sanapalli B, Tyagi R, Shaik AB, Ranakishor P, Bhandare RR, Annadurai S, Venkata Satyanarayana Reddy Karri V. L-Glutamic acid loaded collagen chitosan composite scaffold as regenerative medicine for the accelerated healing of diabetic wounds. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.103841] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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43
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Kamel R, Mabrouk M, El-Sayed SAM, Beherei HH, Abouzeid RE, Abo El-Fadl MT, Mahmoud AA, Maged A. Nanofibrillated cellulose/glucosamine 3D aerogel implants loaded with rosuvastatin and bioactive ceramic for dental socket preservation. Int J Pharm 2022; 616:121549. [PMID: 35131357 DOI: 10.1016/j.ijpharm.2022.121549] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 01/20/2022] [Accepted: 02/01/2022] [Indexed: 11/19/2022]
Abstract
Recycling of agro-wastes presents a great economic and ecologic value. In this study, TEMPO-oxidized nanofibrillated cellulose (TONFC) originating from sugarcane bagasse pulp was exploited in regenerative medicine. TONFC in combination with glucosamine HCl (G) were used to prepare a 3D aerogel implant loaded with rosuvastatin as an integrative approach for extraction-socket healing. Comparing the prepared devices, aerogel composed of TONFC: G (4:1 wt ratio) had the best mechanical properties and integrity. Strontium borate-based bioactive ceramic particles were prepared and characterized for crystal structure, shape, porosity, and zeta potential. The particles had a crystalline diffraction pattern relative to Sr3B2O6, and they were rod in shape with nanopores with a zeta potential value of -16 mV. The prepared bioactive ceramic (BC) was then added in different concentrations (3 or 6% w/w) to the selected aerogel implant. The BC had a concentration-dependent effect on the aerogel properties as it ameliorated its mechanical performance (compressive strength = 90 and 150 kPa for 3 and 6%, respectively) and retarded drug release (mean release time = 2.34 and 3.4 h for 3 and 6%, respectively) (p < 0.05). The microphotograph of the selected aerogel implant loaded with BC showed a rough surface with an interconnective porous structure. During cell biology testing, the selected implant loaded with the lower BC concentration had the highest ability to increase MG-63 cells proliferation. In conclusion, TONFC is a promising material to formulate rosuvastatin-loaded aerogel implant with the aid of glucosamine and bioactive ceramic for dental socket preservation.
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Affiliation(s)
- Rabab Kamel
- Pharmaceutical Technology Department, National Research Centre, Dokki, 12622 Cairo, Egypt
| | - Mostafa Mabrouk
- Refractories, Ceramics and Building Materials Department, National Research Centre, Dokki, 12622 Cairo, Egypt
| | - Sara A M El-Sayed
- Refractories, Ceramics and Building Materials Department, National Research Centre, Dokki, 12622 Cairo, Egypt
| | - Hanan H Beherei
- Refractories, Ceramics and Building Materials Department, National Research Centre, Dokki, 12622 Cairo, Egypt
| | - Ragab E Abouzeid
- Cellulose and Paper Department, National Research Centre, Dokki, 12622 Cairo, Egypt
| | - Mahmoud T Abo El-Fadl
- Biochemistry Department, Biotechnology Research Institute, National Research Centre, Dokki, 12622 Cairo, Egypt; Cancer Biology and Genetics Laboratory, Centre of Excellence for Advanced Sciences, National Research Centre, Dokki, 12622 Cairo, Egypt
| | - Azza A Mahmoud
- Pharmaceutics and Pharmaceutical Technology Department, Faculty of Pharmacy, Future University in Egypt, Egypt.
| | - Amr Maged
- Pharmaceutics and Pharmaceutical Technology Department, Faculty of Pharmacy, Future University in Egypt, Egypt; Pharmaceutical Factory, Faculty of Pharmacy, Future University in Egypt, Egypt.
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Injectable pH-responsive adhesive hydrogels for bone tissue engineering inspired by the underwater attachment strategy of marine mussels. BIOMATERIALS ADVANCES 2022; 133:112606. [PMID: 35525750 PMCID: PMC9933951 DOI: 10.1016/j.msec.2021.112606] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 11/19/2021] [Accepted: 12/07/2021] [Indexed: 11/21/2022]
Abstract
A major challenge in tissue engineering is the development of alternatives to traditional bone autografts and allografts that can regenerate critical-sized bone defects. Here we present the design of injectable pH-responsive double-crosslinked adhesive hydrogels inspired by the molecular mechanism and environmental post-processing of marine mussel adhesive. Nine adhesive hydrogel formulations were developed through the conjugation of crosslinkable catechol functional groups (DOPA) and the synthetic oligomer oligo[poly(ethylene glycol) fumarate] (OPF), varying the DOPA content (w/w%) and molecular weight (MW) of the OPF backbone to produce formulations with a range of swelling ratios, porosities, and crosslink densities. DOPA incorporation altered the surface chemistry, mechanical properties, and surface topography of hydrogels, resulting in an increase in material stiffness, slower degradation, and enhanced pre-osteoblast cell attachment and proliferation. When injected within simulated bone defects, DOPA-mediated interfacial adhesive interactions also prevented the displacement of scaffolds, an effect that was maintained even after swelling within physiological conditions. Taken together, OPF-DOPA hydrogels represent a promising new material to enhanced tissue integration and the prevention of the post-implantation migration of scaffolds that can occur due to biomechanical loading in vivo.
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45
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Blume C, Kraus X, Heene S, Loewner S, Stanislawski N, Cholewa F, Blume H. Vascular implants – new aspects for in situ tissue engineering. Eng Life Sci 2022; 22:344-360. [PMID: 35382534 PMCID: PMC8961049 DOI: 10.1002/elsc.202100100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 12/10/2021] [Accepted: 12/19/2021] [Indexed: 12/12/2022] Open
Abstract
Conventional synthetic vascular grafts require ongoing anticoagulation, and autologous venous grafts are often not available in elderly patients. This review highlights the development of bioartificial vessels replacing brain‐dead donor‐ or animal‐deriving vessels with ongoing immune reactivity. The vision for such bio‐hybrids exists in a combination of biodegradable scaffolds and seeding with immune‐neutral cells, and here different cells sources such as autologous progenitor cells or stem cells are relevant. This kind of in situ tissue engineering depends on a suitable bioreactor system with elaborate monitoring systems, three‐dimensional (3D) visualization and a potential of cell conditioning into the direction of the targeted vascular cell phenotype. Necessary bioreactor tools for dynamic and pulsatile cultivation are described. In addition, a concept for design of vasa vasorum is outlined, that is needed for sustainable nutrition of the wall structure in large caliber vessels. For scaffold design and cell adhesion additives, different materials and technologies are discussed. 3D printing is introduced as a relatively new field with promising prospects, for example, to create complex geometries or micro‐structured surfaces for optimal cell adhesion and ingrowth in a standardized and custom designed procedure. Summarizing, a bio‐hybrid vascular prosthesis from a controlled biotechnological process is thus coming more and more into view. It has the potential to withstand strict approval requirements applied for advanced therapy medicinal products.
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Affiliation(s)
- Cornelia Blume
- Institute for Technical Chemistry Leibniz University Hannover Hannover Germany
| | - Xenia Kraus
- Institute for Technical Chemistry Leibniz University Hannover Hannover Germany
| | - Sebastian Heene
- Institute for Technical Chemistry Leibniz University Hannover Hannover Germany
| | - Sebastian Loewner
- Institute for Technical Chemistry Leibniz University Hannover Hannover Germany
| | - Nils Stanislawski
- Institute for Microelectronic Systems Leibniz University Hannover Hannover Germany
| | - Fabian Cholewa
- Institute for Microelectronic Systems Leibniz University Hannover Hannover Germany
| | - Holger Blume
- Institute for Microelectronic Systems Leibniz University Hannover Hannover Germany
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Fabrication of an Antimicrobial Peptide-Loaded Silk Fibroin/Gelatin Bilayer Sponge to Apply as a Wound Dressing; An In Vitro Study. Int J Pept Res Ther 2021. [DOI: 10.1007/s10989-021-10333-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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47
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A quantitative analysis of cell bridging kinetics on a scaffold using computer vision algorithms. Acta Biomater 2021; 136:429-440. [PMID: 34571272 DOI: 10.1016/j.actbio.2021.09.042] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 09/19/2021] [Accepted: 09/21/2021] [Indexed: 01/01/2023]
Abstract
Tissue engineering involves the seeding of cells into a structural scaffolding to regenerate the architecture of damaged or diseased tissue. To effectively design a scaffold, an understanding of how cells collectively sense and react to the geometry of their local environment is needed. Advances in the development of melt electro-writing have allowed micron and submicron polymeric fibres to be accurately printed into porous, complex and three-dimensional structures. By using melt electrowriting, we created a geometrically relevant in vitro scaffold model to study cellular spatial-temporal kinetics. These scaffolds were paired with custom computer vision algorithms to investigate cell nuclei, cell membrane actin and scaffold fibres over different pore sizes (200-600 µm) and time points (28 days). We find that cells proliferated much faster in the smaller (200 µm) pores which halved the time until confluence versus larger (500 and 600 µm) pores. Our analysis of stained actin fibres revealed that cells were highly aligned to the fibres and the leading edge of the pore filling front, and we found that cells behind the leading edge were not aligned in any particular direction. This study provides a systematic understanding of cellular spatial temporal kinetics within a 3D in vitro model to inform the design of more effective synthetic tissue engineering scaffolds for tissue regeneration. STATEMENT OF SIGNIFICANCE: Advances in the development of melt electro-writing have allowed micron and submicron polymeric fibres to be accurately printed into porous, complex and three-dimensional structures. By using melt electrowriting, we created a geometrically relevant in vitro model to study cellular spatial-temporal kinetics to provide a systematic understanding of cellular spatial temporal kinetics within a 3D in vitro model. The insights presented in this work help to inform the design of more effective synthetic tissue engineering scaffolds by reducing cell culture time; which is valuable information for the implant or lab-grown-meat industries.
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Liu X, Lu X, Wang Z, Yang X, Dai G, Yin J, Huang Y. Effect of bore fluid composition on poly(lactic-co-glycolic acid) hollow fiber membranes fabricated by dry-jet wet spinning. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Habanjar O, Diab-Assaf M, Caldefie-Chezet F, Delort L. 3D Cell Culture Systems: Tumor Application, Advantages, and Disadvantages. Int J Mol Sci 2021; 22:12200. [PMID: 34830082 PMCID: PMC8618305 DOI: 10.3390/ijms222212200] [Citation(s) in RCA: 140] [Impact Index Per Article: 46.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/05/2021] [Accepted: 11/07/2021] [Indexed: 01/09/2023] Open
Abstract
The traditional two-dimensional (2D) in vitro cell culture system (on a flat support) has long been used in cancer research. However, this system cannot be fully translated into clinical trials to ideally represent physiological conditions. This culture cannot mimic the natural tumor microenvironment due to the lack of cellular communication (cell-cell) and interaction (cell-cell and cell-matrix). To overcome these limitations, three-dimensional (3D) culture systems are increasingly developed in research and have become essential for tumor research, tissue engineering, and basic biology research. 3D culture has received much attention in the field of biomedicine due to its ability to mimic tissue structure and function. The 3D matrix presents a highly dynamic framework where its components are deposited, degraded, or modified to delineate functions and provide a platform where cells attach to perform their specific functions, including adhesion, proliferation, communication, and apoptosis. So far, various types of models belong to this culture: either the culture based on natural or synthetic adherent matrices used to design 3D scaffolds as biomaterials to form a 3D matrix or based on non-adherent and/or matrix-free matrices to form the spheroids. In this review, we first summarize a comparison between 2D and 3D cultures. Then, we focus on the different components of the natural extracellular matrix that can be used as supports in 3D culture. Then we detail different types of natural supports such as matrigel, hydrogels, hard supports, and different synthetic strategies of 3D matrices such as lyophilization, electrospiding, stereolithography, microfluid by citing the advantages and disadvantages of each of them. Finally, we summarize the different methods of generating normal and tumor spheroids, citing their respective advantages and disadvantages in order to obtain an ideal 3D model (matrix) that retains the following characteristics: better biocompatibility, good mechanical properties corresponding to the tumor tissue, degradability, controllable microstructure and chemical components like the tumor tissue, favorable nutrient exchange and easy separation of the cells from the matrix.
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Affiliation(s)
- Ola Habanjar
- Université Clermont-Auvergne, INRAE, UNH, Unité de Nutrition Humaine, CRNH-Auvergne, 63000 Clermont-Ferrand, France; (O.H.); (F.C.-C.)
| | - Mona Diab-Assaf
- Equipe Tumorigénèse Pharmacologie Moléculaire et Anticancéreuse, Faculté des Sciences II, Université Libanaise Fanar, Beyrouth 1500, Liban;
| | - Florence Caldefie-Chezet
- Université Clermont-Auvergne, INRAE, UNH, Unité de Nutrition Humaine, CRNH-Auvergne, 63000 Clermont-Ferrand, France; (O.H.); (F.C.-C.)
| | - Laetitia Delort
- Université Clermont-Auvergne, INRAE, UNH, Unité de Nutrition Humaine, CRNH-Auvergne, 63000 Clermont-Ferrand, France; (O.H.); (F.C.-C.)
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Morel A, Guex AG, Itel F, Domaschke S, Ehret AE, Ferguson SJ, Fortunato G, Rossi RM. Tailoring the multiscale architecture of electrospun membranes to promote 3D cellular infiltration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 130:112427. [PMID: 34702512 DOI: 10.1016/j.msec.2021.112427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 09/08/2021] [Accepted: 09/09/2021] [Indexed: 10/20/2022]
Abstract
Controlling the architecture of engineered scaffolds is of outmost importance to induce a targeted cell response and ultimately achieve successful tissue regeneration upon implantation. Robust, reliable and reproducible methods to control scaffold properties at different levels are timely and highly important. However, the multiscale architectural properties of electrospun membranes are very complex, in particular the role of fiber-to-fiber interactions on mechanical properties, and their effect on cell response remain largely unexplored. The work reported here reveals that the macroscopic membrane stiffness, observed by stress-strain curves, cannot be predicted solely based on the Young's moduli of the constituting fibers but is rather influenced by interactions on the microscale, namely the number of fiber-to-fiber bonds. To specifically control the formation of these bonds, solvent systems of the electrospinning solution were fine-tuned, affecting the membrane properties at every length-scale investigated. In contrast to dichloromethane that is characterized by a high vapor pressure, the use of trifluoroacetic acid, a solvent with a lower vapor pressure, favors the generation of fiber-to-fiber bonds. This ultimately led to an overall increased Young's modulus and yield stress of the membrane despite a lower stiffness of the constituting fibers. With respect to tissue engineering applications, an experimental setup was developed to investigate the effect of architectural parameters on the ability of cells to infiltrate and migrate within the scaffold. The results reveal that differences in fiber-to-fiber bonds significantly affect the infiltration of normal human dermal fibroblasts into the membranes. Membranes of loose fibers with low numbers of fiber-to-fiber bonds, as obtained from spinning solutions using dichloromethane, promote cellular infiltration and are thus promising candidates for the formation of a 3D tissue.
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Affiliation(s)
- Alexandre Morel
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biomimetic Membranes and Textiles, 9014 St. Gallen, Switzerland; Institute for Biomechanics, Department of Health Sciences and Technology, ETH Zürich, 8092 Zürich, Switzerland
| | - Anne Géraldine Guex
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biomimetic Membranes and Textiles, 9014 St. Gallen, Switzerland; Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biointerfaces, 9014 St. Gallen, Switzerland.
| | - Fabian Itel
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biomimetic Membranes and Textiles, 9014 St. Gallen, Switzerland
| | - Sebastian Domaschke
- Institute for Mechanical Systems, Department of Mechanical and Process Engineering, ETH Zürich, 8092 Zürich, Switzerland; Empa, Swiss Federal Laboratories for Materials Science and Technology, Experimental Continuum Mechanics, 8600 Dübendorf, Switzerland
| | - Alexander E Ehret
- Institute for Mechanical Systems, Department of Mechanical and Process Engineering, ETH Zürich, 8092 Zürich, Switzerland; Empa, Swiss Federal Laboratories for Materials Science and Technology, Experimental Continuum Mechanics, 8600 Dübendorf, Switzerland
| | - Stephen J Ferguson
- Institute for Biomechanics, Department of Health Sciences and Technology, ETH Zürich, 8092 Zürich, Switzerland
| | - Giuseppino Fortunato
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biomimetic Membranes and Textiles, 9014 St. Gallen, Switzerland
| | - René M Rossi
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biomimetic Membranes and Textiles, 9014 St. Gallen, Switzerland.
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