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  1. Article ; Online: Gelatin-based electrospun and lyophilized scaffolds with nano scale feature for bone tissue engineering application: review.

    Singh, Yogendra Pratap / Dasgupta, Sudip

    Journal of biomaterials science. Polymer edition

    2022  Volume 33, Issue 13, Page(s) 1704–1758

    Abstract: The rebuilding of the normal functioning of the damaged human body bone tissue is one of the main objectives of bone tissue engineering (BTE). Fabricated scaffolds are mostly treated as artificial supports and as materials for regeneration of neo bone ... ...

    Abstract The rebuilding of the normal functioning of the damaged human body bone tissue is one of the main objectives of bone tissue engineering (BTE). Fabricated scaffolds are mostly treated as artificial supports and as materials for regeneration of neo bone tissues and must closely biomimetic the native extracellular matrix of bone. The materials used for developing scaffolds should be biodegradable, nontoxic, and biocompatible. For the resurrection of bone disorder, specifically natural and synthetic polymers such as chitosan, PCL, gelatin, PGA, PLA, PLGA, etc. meet the requirements for serving their functions as artificial bone substitute materials. Gelatin is one of the potential candidates which could be blended with other polymers or composites to improve its physicochemical, mechanical, and biological performances as a bone graft. Scaffolds are produced by several methods including electrospinning, self-assembly, freeze-drying, phase separation, fiber drawing, template synthesis, etc. Among them, freeze-drying and electrospinning are among the popular, simplest, versatile, and cost-effective techniques. The design and preparation of freeze-dried and electrospun scaffolds are of intense research over the last two decades. Freeze-dried and electrospun scaffolds offer a distinctive architecture at the micro to nano range with desired porosity and pore interconnectivity for selective movement of small biomolecules and play its role as an appropriate matrix very similar to the natural bone extracellular matrix. This review focuses on the properties and functionalization of gelatin-based polymer and its composite in the form of bone scaffolds fabricated primarily using lyophilization and electrospinning technique and their applications in BTE.
    MeSH term(s) Biocompatible Materials ; Bone and Bones ; Gelatin/chemistry ; Humans ; Polyesters/chemistry ; Polymers ; Porosity ; Tissue Engineering/methods ; Tissue Scaffolds/chemistry
    Chemical Substances Biocompatible Materials ; Polyesters ; Polymers ; Gelatin (9000-70-8)
    Language English
    Publishing date 2022-05-28
    Publishing country England
    Document type Journal Article ; Review ; Research Support, Non-U.S. Gov't
    ZDB-ID 1014190-x
    ISSN 1568-5624 ; 1568-5616 ; 0920-5063
    ISSN (online) 1568-5624 ; 1568-5616
    ISSN 0920-5063
    DOI 10.1080/09205063.2022.2068943
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: 3D Bioprinted Silk-Based In Vitro Osteochondral Model for Osteoarthritis Therapeutics.

    Singh, Yogendra Pratap / Moses, Joseph Christakiran / Bandyopadhyay, Ashutosh / Mandal, Biman B

    Advanced healthcare materials

    2022  Volume 11, Issue 24, Page(s) e2200209

    Abstract: 3D bioprinting of osteochondral tissue offers unique opportunities for enabling precise pharmacological interventions in osteoarthritis (OA). The current study investigates the screening potential of anti-inflammatory drugs using bioprinted inflamed ... ...

    Abstract 3D bioprinting of osteochondral tissue offers unique opportunities for enabling precise pharmacological interventions in osteoarthritis (OA). The current study investigates the screening potential of anti-inflammatory drugs using bioprinted inflamed human osteochondral units. The biomimetic hierarchical geometry is bioprinted using silk-based bioinks encapsulating pre-differentiated stem cells, creating an in vitro model. Inflammation is stimulated in the model, using tumor necrosis factor-alpha and Interleukin-1 beta pro-inflammatory cytokines. The resultant degeneration, akin to OA, is flagged by key markers like sulfated glycosaminoglycan, collagen, alkaline phosphatase, and downregulation of osteochondral transcript levels. In the next step, the screening of anti-inflammatory drugs is validated using celecoxib and rhein. Consequently, in the inflamed constructs, the initial upregulation of the key inflammatory mediators (nitric oxide, Prostaglandin E2), is subsequently downregulated, post-drug treatment. In addition, catabolic markers (matrix metalloproteinases and aggrecanase-1), indicative of hypertrophic and apoptosing chondrocytes, are significantly downregulated in the treatment groups; while the transcript and protein levels required for osteochondral health are attenuated. Therefore, the in vitro model mimicks the inflammation in the early stages of OA, and corroborates a potential high-throughput platform for screening novel anti-inflammatory drugs in OA therapeutics.
    MeSH term(s) Humans ; Silk/metabolism ; Osteoarthritis/drug therapy ; Chondrocytes/metabolism ; Inflammation/drug therapy ; Anti-Inflammatory Agents/therapeutic use ; Interleukin-1beta/metabolism
    Chemical Substances Silk ; Anti-Inflammatory Agents ; Interleukin-1beta
    Language English
    Publishing date 2022-06-19
    Publishing country Germany
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2649576-4
    ISSN 2192-2659 ; 2192-2640
    ISSN (online) 2192-2659
    ISSN 2192-2640
    DOI 10.1002/adhm.202200209
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Synergistic coupling between 3D bioprinting and vascularization strategies.

    Yeo, Miji / Sarkar, Anwita / Singh, Yogendra Pratap / Derman, Irem Deniz / Datta, Pallab / Ozbolat, Ibrahim T

    Biofabrication

    2023  Volume 16, Issue 1

    Abstract: Three-dimensional (3D) bioprinting offers promising solutions to the complex challenge of vascularization in biofabrication, thereby enhancing the prospects for clinical translation of engineered tissues and organs. While existing reviews have touched ... ...

    Abstract Three-dimensional (3D) bioprinting offers promising solutions to the complex challenge of vascularization in biofabrication, thereby enhancing the prospects for clinical translation of engineered tissues and organs. While existing reviews have touched upon 3D bioprinting in vascularized tissue contexts, the current review offers a more holistic perspective, encompassing recent technical advancements and spanning the entire multistage bioprinting process, with a particular emphasis on vascularization. The synergy between 3D bioprinting and vascularization strategies is crucial, as 3D bioprinting can enable the creation of personalized, tissue-specific vascular network while the vascularization enhances tissue viability and function. The review starts by providing a comprehensive overview of the entire bioprinting process, spanning from pre-bioprinting stages to post-printing processing, including perfusion and maturation. Next, recent advancements in vascularization strategies that can be seamlessly integrated with bioprinting are discussed. Further, tissue-specific examples illustrating how these vascularization approaches are customized for diverse anatomical tissues towards enhancing clinical relevance are discussed. Finally, the underexplored intraoperative bioprinting (IOB) was highlighted, which enables the direct reconstruction of tissues within defect sites, stressing on the possible synergy shaped by combining IOB with vascularization strategies for improved regeneration.
    MeSH term(s) Bioprinting/methods ; Printing, Three-Dimensional ; Tissue Engineering/methods ; Tissue Scaffolds
    Language English
    Publishing date 2023-11-20
    Publishing country England
    Document type Journal Article ; Review ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural
    ZDB-ID 2500944-8
    ISSN 1758-5090 ; 1758-5082
    ISSN (online) 1758-5090
    ISSN 1758-5082
    DOI 10.1088/1758-5090/ad0b3f
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Bioengineering and Clinical Translation of Human Lung and its Components.

    Derman, Irem Deniz / Singh, Yogendra Pratap / Saini, Shweta / Nagamine, Momoka / Banerjee, Dishary / Ozbolat, Ibrahim T

    Advanced biology

    2023  Volume 7, Issue 4, Page(s) e2200267

    Abstract: Clinical lung transplantation has rapidly established itself as the gold standard of treatment for end-stage lung diseases in a restricted group of patients since the first successful lung transplant occurred. Although significant progress has been made ... ...

    Abstract Clinical lung transplantation has rapidly established itself as the gold standard of treatment for end-stage lung diseases in a restricted group of patients since the first successful lung transplant occurred. Although significant progress has been made in lung transplantation, there are still numerous obstacles on the path to clinical success. The development of bioartificial lung grafts using patient-derived cells may serve as an alternative treatment modality; however, challenges include developing appropriate scaffold materials, advanced culture strategies for lung-specific multiple cell populations, and fully matured constructs to ensure increased transplant lifetime following implantation. This review highlights the development of tissue-engineered tracheal and lung equivalents over the past two decades, key problems in lung transplantation in a clinical environment, the advancements made in scaffolds, bioprinting technologies, bioreactors, organoids, and organ-on-a-chip technologies. The review aims to fill the lacuna in existing literature toward a holistic bioartificial lung tissue, including trachea, capillaries, airways, bifurcating bronchioles, lung disease models, and their clinical translation. Herein, the efforts are on bridging the application of lung tissue engineering methods in a clinical environment as it is thought that tissue engineering holds enormous promise for overcoming the challenges associated with the clinical translation of bioengineered human lung and its components.
    MeSH term(s) Humans ; Tissue Engineering ; Bioengineering ; Lung ; Biomedical Engineering ; Lung Transplantation
    Language English
    Publishing date 2023-01-19
    Publishing country Germany
    Document type Journal Article ; Review ; Research Support, N.I.H., Extramural
    ISSN 2701-0198
    ISSN (online) 2701-0198
    DOI 10.1002/adbi.202200267
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Preparation, characterization, and bioactivity of reinforced monetite with chitosan-gelatin electrospun composite scaffold for bone tissue engineering.

    Singh, Yogendra Pratap / Purohit, ShivDutt / Gupta, Mukesh Kumar / Bhaskar, Rakesh / Han, Sung Soo / Dasgupta, Sudip

    Biomedical materials (Bristol, England)

    2023  Volume 18, Issue 5

    Abstract: In this study, chitosan-gelatin-monetite (CGM)-based electrospun scaffolds have been developed that closely mimicked the microstructure and chemical composition of the extracellular matrix of natural bone. CGM-based nanofibrous composite scaffolds were ... ...

    Abstract In this study, chitosan-gelatin-monetite (CGM)-based electrospun scaffolds have been developed that closely mimicked the microstructure and chemical composition of the extracellular matrix of natural bone. CGM-based nanofibrous composite scaffolds were prepared with the help of the electrospinning technique, post-cross-linked using ethyl(dimethylaminopropyl)carbodiimide and N-hydroxysuccinimide solution to improve their stability in an aqueous environment. The prepared chitosan/gelatin (CG) scaffold showed an average fiber diameter of 308 ± 17 nm, whereas 5 and 7 wt% monetite containing CGM
    MeSH term(s) Tissue Engineering/methods ; Chitosan/chemistry ; Gelatin/chemistry ; Tissue Scaffolds/chemistry ; Bone and Bones ; Cell Proliferation
    Chemical Substances Chitosan (9012-76-4) ; calcium phosphate, dibasic, anhydrous (L11K75P92J) ; Gelatin (9000-70-8)
    Language English
    Publishing date 2023-07-26
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2265222-X
    ISSN 1748-605X ; 1748-6041
    ISSN (online) 1748-605X
    ISSN 1748-6041
    DOI 10.1088/1748-605X/ace7a3
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Monetite addition into gelatin based freeze-dried scaffolds for improved mechanical and osteogenic properties.

    Singh, Yogendra Pratap / Dasgupta, Sudip / Bhaskar, Rakesh / Agrawal, Ashish Kumar

    Biomedical materials (Bristol, England)

    2021  Volume 16, Issue 6

    Abstract: This study was aimed at fabricating monetite nanoparticles impregnated gelatin-based composite scaffold to improve the chemical, mechanical and osteogenic properties. Scaffolds were fabricated using a freeze-drying technique of the slurry containing a ... ...

    Abstract This study was aimed at fabricating monetite nanoparticles impregnated gelatin-based composite scaffold to improve the chemical, mechanical and osteogenic properties. Scaffolds were fabricated using a freeze-drying technique of the slurry containing a varying proportion of gelatin and monetite. The lyophilized scaffolds were cross-linked with 0.25 wt% glutaraldehyde solution to obtain a three-dimensional (3D) interconnected porous microstructure with improved mechanical strength and stability in a physiological environment. The fabricated scaffolds possessed >80% porosity having 3D interconnected pore size distribution varying between 65 and 270 μm as evident from field emission scanning electron microscopy analysis. The average pore size of the prepared scaffold decreased with monetite addition as reflected in values of 210 μm for pure gelatin GM
    MeSH term(s) Calcium Phosphates ; Chitosan/chemistry ; Gelatin/chemistry ; Humans ; Porosity ; Tissue Engineering/methods ; Tissue Scaffolds/chemistry
    Chemical Substances Calcium Phosphates ; Gelatin (9000-70-8) ; Chitosan (9012-76-4) ; calcium phosphate, dibasic, anhydrous (L11K75P92J)
    Language English
    Publishing date 2021-11-01
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2265222-X
    ISSN 1748-605X ; 1748-6041
    ISSN (online) 1748-605X
    ISSN 1748-6041
    DOI 10.1088/1748-605X/ac2e17
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Overcoming the Dependence on Animal Models for Osteoarthritis Therapeutics - The Promises and Prospects of In Vitro Models.

    Singh, Yogendra Pratap / Moses, Joseph Christakiran / Bhardwaj, Nandana / Mandal, Biman B

    Advanced healthcare materials

    2021  Volume 10, Issue 20, Page(s) e2100961

    Abstract: Osteoarthritis (OA) is a musculoskeletal disease characterized by progressive degeneration of osteochondral tissues. Current treatment is restricted to the reduction of pain and loss of function of the joint. To better comprehend the OA ... ...

    Abstract Osteoarthritis (OA) is a musculoskeletal disease characterized by progressive degeneration of osteochondral tissues. Current treatment is restricted to the reduction of pain and loss of function of the joint. To better comprehend the OA pathophysiological conditions, several models are employed, however; there is no consensus on a suitable model. In this review, different in vitro models being developed for possible therapeutic intervention of OA are outlined. Herein, various in vitro OA models starting from 2D model, co-culture model, 3D models, dynamic culture model to advanced technologies-based models such as 3D bioprinting, bioassembly, organoids, and organ-on-chip-based models are discussed with their advantages and disadvantages. Besides, different growth factors, cytokines, and chemicals being utilized for induction of OA condition are reviewed in detail. Furthermore, there is focus on scrutinizing different molecular and possible therapeutic targets for better understanding the mechanisms and OA therapeutics. Finally, the underlying challenges associated with in vitro models are discussed followed by future prospective. Taken together, a comprehensive overview of in vitro OA models, factors to induce OA-like conditions, and intricate molecular targets with the potential to develop personalized osteoarthritis therapeutics in the future with clinical translation is provided.
    MeSH term(s) Animals ; Coculture Techniques ; Disease Models, Animal ; Models, Animal ; Osteoarthritis/drug therapy
    Language English
    Publishing date 2021-07-24
    Publishing country Germany
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2649576-4
    ISSN 2192-2659 ; 2192-2640
    ISSN (online) 2192-2659
    ISSN 2192-2640
    DOI 10.1002/adhm.202100961
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: High-throughput microgel biofabrication via air-assisted co-axial jetting for cell encapsulation, 3D bioprinting, and scaffolding applications.

    Pal, Vaibhav / Singh, Yogendra Pratap / Gupta, Deepak / Alioglu, Mecit Altan / Nagamine, Momoka / Kim, Myoung Hwan / Ozbolat, Ibrahim T

    Biofabrication

    2023  Volume 15, Issue 3

    Abstract: Microgels have recently received widespread attention for their applications in a wide array of domains such as tissue engineering, regenerative medicine, and cell and tissue transplantation because of their properties like injectability, modularity, ... ...

    Abstract Microgels have recently received widespread attention for their applications in a wide array of domains such as tissue engineering, regenerative medicine, and cell and tissue transplantation because of their properties like injectability, modularity, porosity, and the ability to be customized in terms of size, form, and mechanical properties. However, it is still challenging to mass (high-throughput) produce microgels with diverse sizes and tunable properties. Herein, we utilized an air-assisted co-axial device (ACAD) for continuous production of microgels in a high-throughput manner. To test its robustness, microgels of multiple hydrogels and their combination, including alginate (Alg), gelatin methacrylate (GelMA) and Alg-GelMA, were formed at a maximum production rate of ∼65 000 microgels s
    MeSH term(s) Humans ; Microgels ; Cell Encapsulation ; Bioprinting ; Tissue Engineering ; Hydrogels ; Gelatin ; Tissue Scaffolds ; Printing, Three-Dimensional
    Chemical Substances Microgels ; Hydrogels ; Gelatin (9000-70-8)
    Language English
    Publishing date 2023-04-04
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, U.S. Gov't, Non-P.H.S. ; Research Support, Non-U.S. Gov't
    ZDB-ID 2500944-8
    ISSN 1758-5090 ; 1758-5082
    ISSN (online) 1758-5090
    ISSN 1758-5082
    DOI 10.1088/1758-5090/acc4eb
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: 3D Bioprinting Using Cross-Linker-Free Silk-Gelatin Bioink for Cartilage Tissue Engineering.

    Singh, Yogendra Pratap / Bandyopadhyay, Ashutosh / Mandal, Biman B

    ACS applied materials & interfaces

    2019  Volume 11, Issue 37, Page(s) 33684–33696

    Abstract: Cartilage tissue is deprived of intrinsic self-regeneration capability; hence, its damage often progresses to a chronic condition which reduces the quality of life. Toward the fabrication of functional tissue substitutes, three-dimensional (3D) ... ...

    Abstract Cartilage tissue is deprived of intrinsic self-regeneration capability; hence, its damage often progresses to a chronic condition which reduces the quality of life. Toward the fabrication of functional tissue substitutes, three-dimensional (3D) bioprinting has progressed vastly over the last few decades. However, this progress is challenged by the difficulty in developing suitable bioink materials as most of them require toxic chemical cross-linking. In this study, our goal was to develop a cross-linker-free bioink with optimal rheology for polymer extrusion, aqueous, and nontoxic processing and offers structural support for cartilage regeneration. Toward this, we use the self-gelling ability of silk fibroin blends (
    MeSH term(s) Animals ; Cartilage/chemistry ; Cartilage/cytology ; Cartilage/metabolism ; Chondrocytes/cytology ; Chondrocytes/metabolism ; Fibroins/chemistry ; Gelatin/chemistry ; Printing, Three-Dimensional ; Swine ; Tissue Engineering ; Tissue Scaffolds/chemistry
    Chemical Substances Gelatin (9000-70-8) ; Fibroins (9007-76-5)
    Language English
    Publishing date 2019-09-10
    Publishing country United States
    Document type Journal Article
    ISSN 1944-8252
    ISSN (online) 1944-8252
    DOI 10.1021/acsami.9b11644
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Silk Fibroin Scaffold-Based 3D Co-Culture Model for Modulation of Chondrogenesis without Hypertrophy via Reciprocal Cross-talk and Paracrine Signaling.

    Bhardwaj, Nandana / Singh, Yogendra Pratap / Mandal, Biman B

    ACS biomaterials science & engineering

    2019  Volume 5, Issue 10, Page(s) 5240–5254

    Abstract: In this study, the effect of cellular cross-talk on modulation of chondrogenesis and hypertrophy while minimizing the usage of articular chondrocytes (ACs) has been investigated. Herein, co-culture of ACs with adipose-derived human mesenchymal stem cells ...

    Abstract In this study, the effect of cellular cross-talk on modulation of chondrogenesis and hypertrophy while minimizing the usage of articular chondrocytes (ACs) has been investigated. Herein, co-culture of ACs with adipose-derived human mesenchymal stem cells (ADhMSCs) was employed for cross-talk within silk fibroin (SF)-based three-dimensional (3D) scaffolds. The co-culture model was developed by co-culturing four different ratios of ADhMSCs to ACs: 1:0, 3:1, 1:1, and 0:1 on porous 3D SF scaffolds for 21 days. The co-culture groups were cultured in defined media without adding any exogenous growth factors except the monoculture group, ADhMSC-only controls. The co-cultured constructs indicated significantly higher cellular viability and proliferation than the control monoculture groups. The supernatants of co-culture groups indicated significantly higher levels of TGF-β1 and IL-10, which confirmed the production of the morphogens/signaling molecules by chondrocytes for induction of ADhMSCs differentiation toward the chondrogenic phenotype. Biochemical assays indicated enhanced accumulation of sulfated glycosaminoglycans, collagen, and high DNA content along with high cellularity in co-culture groups than chondrocyte-only controls. Co-culture groups revealed synergistic interactions between cells as indicated by the interaction index value ranging from 2-3. Furthermore, upregulation of putative chondrogenic markers-aggrecan, sox-9, and collagen II, and significantly reduced expression of hypertrophic genes-collagen type X and MMP-13 was revealed in co-culture constructs. Histological and immunohistochemical staining also demonstrated even distribution and deposition of ECM in co-cultured constructs. Taken together, this work presents the potential of the developed 3D co-culture model toward modulation of chondrogenesis and hypertrophy via 3D microenvironment induced by physicochemical and biological properties of SF scaffolds, synergistic interactions between cells, and paracrine signaling in the co-culture system.
    Language English
    Publishing date 2019-09-05
    Publishing country United States
    Document type Journal Article
    ISSN 2373-9878
    ISSN (online) 2373-9878
    DOI 10.1021/acsbiomaterials.9b00573
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