1
|
Branched Poly( ε-caprolactone)-Based Copolyesters of Different Architectures and Their Use in the Preparation of Anticancer Drug-Loaded Nanoparticles. Int J Mol Sci 2022; 23:ijms232315393. [PMID: 36499719 PMCID: PMC9735713 DOI: 10.3390/ijms232315393] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 11/24/2022] [Accepted: 12/02/2022] [Indexed: 12/12/2022] Open
Abstract
Limitations associated with the use of linear biodegradable polyesters in the preparation of anticancer nano-based drug delivery systems (nanoDDS) have turned scientific attention to the utilization of branched-chain (co-)polymers. In this context, the present study evaluates the use of novel branched poly(ε-caprolactone) (PCL)-based copolymers of different architectures for the preparation of anticancer nanoparticle (NP)-based formulations, using paclitaxel (PTX) as a model drug. Specifically, three PCL-polyol branched polyesters, namely, a three-arm copolymer based on glycerol (PCL-GLY), a four-arm copolymer based on pentaerythritol (PCL-PE), and a five-arm copolymer based on xylitol (PCL-XYL), were synthesized via ring-opening polymerization and characterized by proton nuclear magnetic resonance (1H-NMR), gel permeation chromatography (GPC), intrinsic viscosity, differential scanning calorimetry (DSC), X-ray diffraction (XRD), and Fourier-transform infrared (FT-IR) spectroscopy and cytotoxicity. Then, PTX-loaded NPs were prepared by an oil-in-water emulsion. The size of the obtained NPs varied from 200 to 300 nm, while the drug was dispersed in crystalline form in all formulations. High encapsulation efficiency and high yields were obtained in all cases, while FTIR analysis showed no molecular drug polymer. Finally, in vitro drug release studies showed that the studied nanocarriers significantly enhanced the dissolution rate and extent of the drug.
Collapse
|
2
|
Pérez-Nava A, Espino-Saldaña AE, Pereida-Jaramillo E, Hernández-Vargas J, Martinez-Torres A, Vázquez-Lepe MO, Mota-Morales JD, Frontana Uribe BA, Betzabe González-Campos J. Surface collagen functionalization of electrospun poly(vinyl alcohol) scaffold for tissue engineering. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.12.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
3
|
Nishiuchi H, Tonami H. Control of mat thickness in electrospinning with transparent conductive glass collector. POLYM ENG SCI 2022. [DOI: 10.1002/pen.26005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hitachi Nishiuchi
- Department of Biomedical Engineering Osaka Institute of Technology Osaka Japan
| | - Hiroyuki Tonami
- Department of Biomedical Engineering Osaka Institute of Technology Osaka Japan
| |
Collapse
|
4
|
Kaur G, Narayanan G, Garg D, Sachdev A, Matai I. Biomaterials-Based Regenerative Strategies for Skin Tissue Wound Healing. ACS APPLIED BIO MATERIALS 2022; 5:2069-2106. [PMID: 35451829 DOI: 10.1021/acsabm.2c00035] [Citation(s) in RCA: 41] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Skin tissue wound healing proceeds through four major stages, including hematoma formation, inflammation, and neo-tissue formation, and culminates with tissue remodeling. These four steps significantly overlap with each other and are aided by various factors such as cells, cytokines (both anti- and pro-inflammatory), and growth factors that aid in the neo-tissue formation. In all these stages, advanced biomaterials provide several functional advantages, such as removing wound exudates, providing cover, transporting oxygen to the wound site, and preventing infection from microbes. In addition, advanced biomaterials serve as vehicles to carry proteins/drug molecules/growth factors and/or antimicrobial agents to the target wound site. In this review, we report recent advancements in biomaterials-based regenerative strategies that augment the skin tissue wound healing process. In conjunction with other medical sciences, designing nanoengineered biomaterials is gaining significant attention for providing numerous functionalities to trigger wound repair. In this regard, we highlight the advent of nanomaterial-based constructs for wound healing, especially those that are being evaluated in clinical settings. Herein, we also emphasize the competence and versatility of the three-dimensional (3D) bioprinting technique for advanced wound management. Finally, we discuss the challenges and clinical perspective of various biomaterial-based wound dressings, along with prospective future directions. With regenerative strategies that utilize a cocktail of cell sources, antimicrobial agents, drugs, and/or growth factors, it is expected that significant patient-specific strategies will be developed in the near future, resulting in complete wound healing with no scar tissue formation.
Collapse
Affiliation(s)
- Gurvinder Kaur
- Materials Science and Sensor Applications, Central Scientific Instruments Organization, Chandigarh 160030, India
| | - Ganesh Narayanan
- Fiber and Polymer Science Program, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Deepa Garg
- Materials Science and Sensor Applications, Central Scientific Instruments Organization, Chandigarh 160030, India
| | - Abhay Sachdev
- Materials Science and Sensor Applications, Central Scientific Instruments Organization, Chandigarh 160030, India
| | - Ishita Matai
- Department of Biotechnology, School of Biological Sciences, Amity University Punjab, Mohali 140306, India
| |
Collapse
|
5
|
Parhi B, Bharatiya D, Swain SK. Effect of polycaprolactone on physicochemical, biological, and mechanical properties of polyethylene oxide and polyamino acids nano block copolymers. J Appl Polym Sci 2022. [DOI: 10.1002/app.52116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Biswajit Parhi
- Department of Chemistry Veer Surendra Sai University of Technology Sambalpur India
| | - Debasrita Bharatiya
- Department of Chemistry Veer Surendra Sai University of Technology Sambalpur India
| | - Sarat K. Swain
- Department of Chemistry Veer Surendra Sai University of Technology Sambalpur India
| |
Collapse
|
6
|
Sharma D, Satapathy BK. Fabrication of optimally controlled electrosprayed polymer-free nano-particles of curcumin/β-cyclodextrin inclusion complex. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126504] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
7
|
Sharma D, Satapathy BK. Physicomechanical performance and encapsulation efficiency of β-cyclodextrin loaded functional electrospun mats based on aliphatic polyesters and their blends. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2021; 32:1489-1513. [PMID: 33977872 DOI: 10.1080/09205063.2021.1925393] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Designing complex-forming biodegradable and biocompatible electrospun mats (EMs) by incorporating β- cyclodextrin (β-CD) into polylactic acid (PLA)/poly(ε-caprolactone) (PCL) (70:30 w/w) blend based polyester matrix. The influence of β-CD loading on the morphological, thermal, and microstructural properties was investigated using scanning electron microscopy, differential scanning calorimetry (DSC), thermogravimetric analysis, X-ray diffraction, and Fourier transform infrared spectroscopy. The studies revealed the presence of characteristic interactions between the polymer matrix and β-CD moieties. Further, the quasi-static mechanical properties of EMs were evaluated using a universal testing machine. An enhancement in modulus and strength was obtained for ∼ 2.5-5 phr of β-CD content and beyond ∼ 5 phr of β-CD content, the mechanical properties of EMs were observed to deteriorate. The contact angle studies indicated a decrease in hydrophobicity of PLA/PCL-based EMs with the increase in β-CD content. The swelling and weight loss studies in phosphate buffer saline (PBS) indicated a subsequent release of β-CD from the EMs. FT-IR and 1H NMR spectra elucidated the removal of curcumin from ethanol-water solutions and its simultaneous encapsulation in β-CD hydrophobic cavities (released) of fabricated EMs. Thus, the study demonstrates the development of aliphatic polyester-based biodegradable-functional EMs with tunable physico-mechanical properties for biomedical applications, facilitating encapsulation and rapid removal of waste hydrophobic ultrafine molecules from the system.
Collapse
Affiliation(s)
- Deepika Sharma
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, New Delhi, India
| | - Bhabani K Satapathy
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, New Delhi, India
| |
Collapse
|
8
|
Electrospinning preparation and spectral characterizations of the inclusion complex of ferulic acid and γ-cyclodextrin with encapsulation into polyvinyl alcohol electrospun nanofibers. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128767] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
9
|
Eghbalifam N, Shojaosadati SA, Hashemi-Najafabadi S, Khorasani AC. Synthesis and characterization of antimicrobial wound dressing material based on silver nanoparticles loaded gum Arabic nanofibers. Int J Biol Macromol 2020; 155:119-130. [DOI: 10.1016/j.ijbiomac.2020.03.194] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 03/20/2020] [Accepted: 03/22/2020] [Indexed: 11/30/2022]
|
10
|
Gao S, Jiang JY, Liu YY, Fu Y, Zhao LX, Li CY, Ye F. Enhanced Solubility, Stability, and Herbicidal Activity of the Herbicide Diuron by Complex Formation with β-Cyclodextrin. Polymers (Basel) 2019; 11:E1396. [PMID: 31450656 PMCID: PMC6780809 DOI: 10.3390/polym11091396] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 08/22/2019] [Accepted: 08/22/2019] [Indexed: 11/16/2022] Open
Abstract
The herbicide diuron is hardly soluble in water and most organic solvents and is usually made into a wettable powder or mixed with soil when used, which causes environmental risk and a reduction in herbicidal efficacy. In this study, the physicochemical properties were changed by using β-cyclodextrin (β-CD) to encapsulate diuron to form an inclusion complex. Some key technologies, including X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and nuclear magnetic resonance (1H NMR), were used to characterize the inclusion complex. The stoichiometry of the inclusion complex was determined by recording the 1H NMR spectrum or by using a diagram of inclusion ratios. A phase solubility study proved that the formed inclusion complex exhibited higher water solubility. Thermogravimetric analysis (TGA) demonstrated that the formed inclusion complex exhibited better thermal stability. Biological activity studies indicated that the herbicidal activity, in terms of herbicide removal, of the formed inclusion complex was higher than that of the original diuron. In general, the formation of the inclusion complex could reduce the environmental damage caused by diuron and enhance its herbicidal activity, providing an environmentally friendly method for using diuron.
Collapse
Affiliation(s)
- Shuang Gao
- College of Science, Northeast Agricultural University, Harbin 150030, China
| | - Jing-Yu Jiang
- College of Science, Northeast Agricultural University, Harbin 150030, China
| | - Yan-Yan Liu
- College of Science, Northeast Agricultural University, Harbin 150030, China
| | - Ying Fu
- College of Science, Northeast Agricultural University, Harbin 150030, China
| | - Li-Xia Zhao
- College of Science, Northeast Agricultural University, Harbin 150030, China
| | - Chun-Yan Li
- College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China.
| | - Fei Ye
- College of Science, Northeast Agricultural University, Harbin 150030, China.
| |
Collapse
|
11
|
Narayanan G, Caydamli Y, Tekinalp H, Matai I, Boy R, Chung C, Shen J, Gupta BS, Tonelli AE. Thermal, mechanical, and topographical evaluation of nonstoichiometric α‐cyclodextrin/poly(ε‐caprolactone) pseudorotaxane nucleated poly(ε‐caprolactone) composite films. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/polb.24741] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ganesh Narayanan
- Fiber and Polymer Science Program North Carolina State University Raleigh North Carolina 27695
| | - Yavuz Caydamli
- Fiber and Polymer Science Program North Carolina State University Raleigh North Carolina 27695
| | - Halil Tekinalp
- Carbon and Composites Group Oak Ridge National Laboratory Oak Ridge Tennessee 37831
| | - Ishita Matai
- Ubiquitous Analytical Techniques Division CSIR‐Central Scientific Instruments Organization Chandigarh 160030 India
| | - Ramiz Boy
- Department of Textile Engineering Namık Kemal University Corlu/Tekirdag Turkey
| | - Ching‐Chang Chung
- Department of Materials Science and Engineering North Carolina State University Raleigh North Carolina 27606
| | - Jialong Shen
- Fiber and Polymer Science Program North Carolina State University Raleigh North Carolina 27695
| | - Bhupender S. Gupta
- Fiber and Polymer Science Program North Carolina State University Raleigh North Carolina 27695
| | - Alan E. Tonelli
- Fiber and Polymer Science Program North Carolina State University Raleigh North Carolina 27695
| |
Collapse
|
12
|
Narayanan G, Shen J, Boy R, Gupta BS, Tonelli AE. Aliphatic Polyester Nanofibers Functionalized with Cyclodextrins and Cyclodextrin-Guest Inclusion Complexes. Polymers (Basel) 2018; 10:E428. [PMID: 30966463 PMCID: PMC6415270 DOI: 10.3390/polym10040428] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 03/27/2018] [Accepted: 04/04/2018] [Indexed: 12/20/2022] Open
Abstract
The fabrication of nanofibers by electrospinning has gained popularity in the past two decades; however, only in this decade, have polymeric nanofibers been functionalized using cyclodextrins (CDs) or their inclusion complexes (ICs). By combining electrospinning of polymers with free CDs, nanofibers can be fabricated that are capable of capturing small molecules, such as wound odors or environmental toxins in water and air. Likewise, combining polymers with cyclodextrin-inclusion complexes (CD-ICs), has shown promise in enhancing or controlling the delivery of small molecule guests, by minor tweaking in the technique utilized in fabricating these nanofibers, for example, by forming core⁻shell or multilayered structures and conventional electrospinning, for controlled and rapid delivery, respectively. In addition to small molecule delivery, the thermomechanical properties of the polymers can be significantly improved, as our group has shown recently, by adding non-stoichiometric inclusion complexes to the polymeric nanofibers. We recently reported and thoroughly characterized the fabrication of polypseudorotaxane (PpR) nanofibers without a polymeric carrier. These PpR nanofibers show unusual rheological and thermomechanical properties, even when the coverage of those polymer chains is relatively sparse (~3%). A key advantage of these PpR nanofibers is the presence of relatively stable hydroxyl groups on the outer surface of the nanofibers, which can subsequently be taken advantage of for bioconjugation, making them suitable for biomedical applications. Although the number of studies in this area is limited, initial results suggest significant potential for bone tissue engineering, and with additional bioconjugation in other areas of tissue engineering. In addition, the behaviors and uses of aliphatic polyester nanofibers functionalized with CDs and CD-ICs are briefly described and summarized. Based on these observations, we attempt to draw conclusions for each of these combinations, and the relationships that exist between their presence and the functional behaviors of their nanofibers.
Collapse
Affiliation(s)
- Ganesh Narayanan
- Fiber and Polymer Science Program, North Carolina State University, Raleigh, NC 27695, USA.
| | - Jialong Shen
- Fiber and Polymer Science Program, North Carolina State University, Raleigh, NC 27695, USA.
| | - Ramiz Boy
- Department of Textile Engineering, Namık Kemal University, Corlu/Tekirdag 59860, Turkey.
| | - Bhupender S Gupta
- Fiber and Polymer Science Program, North Carolina State University, Raleigh, NC 27695, USA.
- Department of Textile Engineering Chemistry and Science, North Carolina State University, Raleigh, NC 27695, USA.
| | - Alan E Tonelli
- Fiber and Polymer Science Program, North Carolina State University, Raleigh, NC 27695, USA.
- Department of Textile Engineering Chemistry and Science, North Carolina State University, Raleigh, NC 27695, USA.
| |
Collapse
|
13
|
Narayanan G, Nair LS, Laurencin CT. Regenerative Engineering of the Rotator Cuff of the Shoulder. ACS Biomater Sci Eng 2018; 4:751-786. [PMID: 33418763 DOI: 10.1021/acsbiomaterials.7b00631] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Rotator cuff tears often heal poorly, leading to re-tears after repair. This is in part attributed to the low proliferative ability of the resident cells (tendon fibroblasts and tendon-stem cells) upon injury to the rotator cuff tissue and the low vascularity of the tendon insertion. In addition, surgical outcomes of current techniques used in clinical settings are often suboptimal, leading to the formation of neo-tissue with poor biomechanics and structural characteristics, which results in re-tears. This has prompted interest in a new approach, which we term as "Regenerative Engineering", for regenerating rotator cuff tendons. In the Regenerative Engineering paradigm, roles played by stem cells, scaffolds, growth factors/small molecules, the use of local physical forces, and morphogenesis interplayed with clinical surgery techniques may synchronously act, leading to synergistic effects and resulting in successful tissue regeneration. In this regard, various cell sources such as tendon fibroblasts and adult tissue-derived stem cells have been isolated, characterized, and investigated for regenerating rotator cuff tendons. Likewise, numerous scaffolds with varying architecture, geometry, and mechanical characteristics of biologic and synthetic origin have been developed. Furthermore, these scaffolds have been also fabricated with biochemical cues (growth factors and small molecules), facilitating tissue regeneration. In this Review, various strategies to regenerate rotator cuff tendons using stem cells, advanced materials, and factors in the setting of physical forces under the Regenerative Engineering paradigm are described.
Collapse
Affiliation(s)
- Ganesh Narayanan
- Institute for Regenerative Engineering, University of Connecticut Health Center, Farmington, Connecticut 06030, United States.,Raymond and Beverly Sackler Center for Biomedical, Biological, Physical and Engineering Sciences, University of Connecticut Health Center, Farmington, Connecticut 06030, United States.,Department of Orthopaedic Surgery, University of Connecticut Health Center, Farmington, Connecticut 06030, United States
| | - Lakshmi S Nair
- Institute for Regenerative Engineering, University of Connecticut Health Center, Farmington, Connecticut 06030, United States.,Raymond and Beverly Sackler Center for Biomedical, Biological, Physical and Engineering Sciences, University of Connecticut Health Center, Farmington, Connecticut 06030, United States.,Department of Orthopaedic Surgery, University of Connecticut Health Center, Farmington, Connecticut 06030, United States.,Department of Biomedical Engineering, University of Connecticut, Storrs, Connecticut 06269, United States.,Department of Materials Science and Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Cato T Laurencin
- Institute for Regenerative Engineering, University of Connecticut Health Center, Farmington, Connecticut 06030, United States.,Raymond and Beverly Sackler Center for Biomedical, Biological, Physical and Engineering Sciences, University of Connecticut Health Center, Farmington, Connecticut 06030, United States.,Department of Orthopaedic Surgery, University of Connecticut Health Center, Farmington, Connecticut 06030, United States.,Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut 06030, United States.,Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, Connecticut 06269, United States.,Department of Biomedical Engineering, University of Connecticut, Storrs, Connecticut 06269, United States.,Department of Materials Science and Engineering, University of Connecticut, Storrs, Connecticut 06269, United States.,Connecticut Institute for Clinical and Translational Science, University of Connecticut Health Center, Farmington, Connecticut 06030, United States
| |
Collapse
|
14
|
An ECM-Mimicking, Mesenchymal Stem Cell-Embedded Hybrid Scaffold for Bone Regeneration. BIOMED RESEARCH INTERNATIONAL 2017; 2017:8591073. [PMID: 29270436 PMCID: PMC5706071 DOI: 10.1155/2017/8591073] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 09/25/2017] [Accepted: 10/15/2017] [Indexed: 12/23/2022]
Abstract
While biologically feasible, bone repair is often inadequate, particularly in cases of large defects. The search for effective bone regeneration strategies has led to the emergence of bone tissue engineering (TE) techniques. When integrating electrospinning techniques, scaffolds featuring randomly oriented or aligned fibers, characteristic of the extracellular matrix (ECM), can be fabricated. In parallel, mesenchymal stem cells (MSCs), which are capable of both self-renewing and differentiating into numerous tissue types, have been suggested to be a suitable option for cell-based tissue engineering therapies. This work aimed to create a novel biocompatible hybrid scaffold composed of electrospun polymeric nanofibers combined with osteoconductive ceramics, loaded with human MSCs, to yield a tissue-like construct to promote in vivo bone formation. Characterization of the cell-embedded scaffolds demonstrated their resemblance to bone tissue extracellular matrix, on both micro- and nanoscales and MSC viability and integration within the electrospun nanofibers. Subcutaneous implantation of the cell-embedded scaffolds in the dorsal side of mice led to new bone, muscle, adipose, and connective tissue formation within 8 weeks. This hybrid scaffold may represent a step forward in the pursuit of advanced bone tissue engineering scaffolds.
Collapse
|
15
|
Electrospun Fibers of Cyclodextrins and Poly(cyclodextrins). Molecules 2017; 22:molecules22020230. [PMID: 28165381 PMCID: PMC6155744 DOI: 10.3390/molecules22020230] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 01/21/2017] [Accepted: 01/30/2017] [Indexed: 11/28/2022] Open
Abstract
Cyclodextrins (CDs) can endow electrospun fibers with outstanding performance characteristics that rely on their ability to form inclusion complexes. The inclusion complexes can be blended with electrospinnable polymers or used themselves as main components of electrospun nanofibers. In general, the presence of CDs promotes drug release in aqueous media, but they may also play other roles such as protection of the drug against adverse agents during and after electrospinning, and retention of volatile fragrances or therapeutic agents to be slowly released to the environment. Moreover, fibers prepared with empty CDs appear particularly suitable for affinity separation. The interest for CD-containing nanofibers is exponentially increasing as the scope of applications is widening. The aim of this review is to provide an overview of the state-of-the-art on CD-containing electrospun mats. The information has been classified into three main sections: (i) fibers of mixtures of CDs and polymers, including polypseudorotaxanes and post-functionalization; (ii) fibers of polymer-free CDs; and (iii) fibers of CD-based polymers (namely, polycyclodextrins). Processing conditions and applications are analyzed, including possibilities of development of stimuli-responsive fibers.
Collapse
|
16
|
Polycaprolactone/Amino-β-Cyclodextrin Inclusion Complex Prepared by an Electrospinning Technique. Polymers (Basel) 2016; 8:polym8110395. [PMID: 30974680 PMCID: PMC6432087 DOI: 10.3390/polym8110395] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Revised: 10/26/2016] [Accepted: 11/01/2016] [Indexed: 01/07/2023] Open
Abstract
Electrospun scaffolds of neat poly-ε-caprolactone (PCL), poly-ε-caprolactone/β-cyclodextrin inclusion complex (PCL/β-CD) and poly-ε-caprolactone amino derivative inclusion complex (PCL/β-CD-NH₂) were prepared by the electrospinning technique. The obtained mats were analyzed by a theoretical model using the Hartree⁻Fock method with an STO-3G basis set, and characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy-attenuated total reflectance (FTIR-ATR), differential scanning calorimetry (DSC), confocal-Raman spectroscopy, proton nuclear magnetic resonance (¹HNMR) and contact angle measure (CA). Different mixtures of solvents, such as dimethylformamide (DMF)-tetrahydrofuran (THF), dichlormethane (DCM)-dimethyl sulfoxide (DMSO) and 2,2,2-Trifluoroethanol (TFE), were tested in the fiber preparation. The results indicate that electrospun nanofibers have a pseudorotaxane structure and when it was prepared using a 2,2,2-Trifluoroethanol (TFE) as solvent, the nanofibers were electrospun well and, with the other solvents, fibers present defects such as molten fibers and bead-like defects into the fiber structure. This work provides insights into the design of PCL/β-CD-NH₂ based scaffolds that could have applications in the biomedical field.
Collapse
|
17
|
Boy R, Narayanan G, Chung CC, Kotek R. Novel cellulose-collagen blend biofibers prepared from an amine/salt solvent system. Int J Biol Macromol 2016; 92:1197-1204. [DOI: 10.1016/j.ijbiomac.2016.08.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 07/18/2016] [Accepted: 08/05/2016] [Indexed: 11/27/2022]
|
18
|
Narayanan G, Chung CC, Aguda R, Boy R, Hartman M, Mehraban N, Gupta BS, Tonelli AE. Correlation of the stoichiometries of poly(ε-caprolactone) and α-cyclodextrin pseudorotaxanes with their solution rheology and the molecular orientation, crystallite size, and thermomechanical properties of their nanofibers. RSC Adv 2016. [DOI: 10.1039/c6ra23536k] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Pseudorotaxane nanofibers based on biomedical polymers, such as poly(ε-caprolactone) (PCL), and α-cyclodextrins (α-CD) open new horizons for a variety of biomedical applications.
Collapse
Affiliation(s)
- Ganesh Narayanan
- Fiber and Polymer Science Program
- North Carolina State University
- Raleigh
- USA
| | - Ching-Chang Chung
- Department of Materials Science and Engineering
- North Carolina State University
- Raleigh
- USA
| | - Remil Aguda
- Department of Forest Biomaterials
- North Carolina State University
- Raleigh
- USA
| | - Ramiz Boy
- Fiber and Polymer Science Program
- North Carolina State University
- Raleigh
- USA
| | - Matthew Hartman
- Department of Biomedical Engineering
- North Carolina State University
- Raleigh
- USA
| | - Nahid Mehraban
- Fiber and Polymer Science Program
- North Carolina State University
- Raleigh
- USA
| | - Bhupender S. Gupta
- Fiber and Polymer Science Program
- North Carolina State University
- Raleigh
- USA
| | - Alan E. Tonelli
- Fiber and Polymer Science Program
- North Carolina State University
- Raleigh
- USA
| |
Collapse
|
19
|
Narayanan G, Aguda R, Hartman M, Chung CC, Boy R, Gupta BS, Tonelli AE. Fabrication and Characterization of Poly(ε-caprolactone)/α-Cyclodextrin Pseudorotaxane Nanofibers. Biomacromolecules 2015; 17:271-9. [DOI: 10.1021/acs.biomac.5b01379] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Ganesh Narayanan
- Fiber and Polymer Science Program, ‡Department of Forest
Biomaterials, §Department of Biomedical
Engineering, and ∥Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Remil Aguda
- Fiber and Polymer Science Program, ‡Department of Forest
Biomaterials, §Department of Biomedical
Engineering, and ∥Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Matthew Hartman
- Fiber and Polymer Science Program, ‡Department of Forest
Biomaterials, §Department of Biomedical
Engineering, and ∥Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Ching-Chang Chung
- Fiber and Polymer Science Program, ‡Department of Forest
Biomaterials, §Department of Biomedical
Engineering, and ∥Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Ramiz Boy
- Fiber and Polymer Science Program, ‡Department of Forest
Biomaterials, §Department of Biomedical
Engineering, and ∥Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Bhupender S. Gupta
- Fiber and Polymer Science Program, ‡Department of Forest
Biomaterials, §Department of Biomedical
Engineering, and ∥Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Alan E. Tonelli
- Fiber and Polymer Science Program, ‡Department of Forest
Biomaterials, §Department of Biomedical
Engineering, and ∥Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| |
Collapse
|