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Niemczyk-Soczynska B, Kolbuk D, Mikulowski G, Ciechomska IA, Sajkiewicz P. Methylcellulose/agarose hydrogel loaded with short electrospun PLLA/laminin fibers as an injectable scaffold for tissue engineering/3D cell culture model for tumour therapies. RSC Adv 2023; 13:11889-11902. [PMID: 37077262 PMCID: PMC10107725 DOI: 10.1039/d3ra00851g] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 04/10/2023] [Indexed: 04/21/2023] Open
Abstract
This research aimed at designing and fabricating a smart thermosensitive injectable methylcellulose/agarose hydrogel system loaded with short electrospun bioactive PLLA/laminin fibers as a scaffold for tissue engineering applications or 3D cell culture models. Considering ECM-mimicking morphology and chemical composition, such a scaffold is capable of ensuring a hospitable environment for cell adhesion, proliferation, and differentiation. Its viscoelastic properties are beneficial from the practical perspective of minimally invasive materials that are introduced to the body via injection. Viscosity studies showed the shear-thinning character of MC/AGR hydrogels enabling the potential injection ability of highly viscous materials. Injectability tests showed that by tuning the injection rate, even a high amount of short fibers loaded inside of hydrogel could be efficiently injected into the tissue. Biological studies showed the non-toxic character of composite material with excellent viability, attachment, spreading, and proliferation of fibroblasts and glioma cells. These findings indicate that MC/AGR hydrogel loaded with short PLLA/laminin fibers is a promising biomaterial for both tissue engineering applications and 3D tumor culture models.
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Affiliation(s)
- Beata Niemczyk-Soczynska
- Institute of Fundamental Technological Research, Polish Academy of Sciences Pawinskiego 5b St. 02-106 Warsaw Poland
| | - Dorota Kolbuk
- Institute of Fundamental Technological Research, Polish Academy of Sciences Pawinskiego 5b St. 02-106 Warsaw Poland
| | - Grzegorz Mikulowski
- Institute of Fundamental Technological Research, Polish Academy of Sciences Pawinskiego 5b St. 02-106 Warsaw Poland
| | - Iwona A Ciechomska
- Nencki Institute of Experimental Biology PAS 3 Pasteur Street 02-093 Warsaw Poland
| | - Pawel Sajkiewicz
- Institute of Fundamental Technological Research, Polish Academy of Sciences Pawinskiego 5b St. 02-106 Warsaw Poland
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Robinson T, Eisenstein N, Cox S, Moakes R, Thompson A, Ahmed Z, Hughes E, Hill L, Stapley S, Grover L. Local injection of a hexametaphosphate formulation reduces heterotopic ossification in vivo. Mater Today Bio 2020; 7:100059. [PMID: 32613185 PMCID: PMC7322360 DOI: 10.1016/j.mtbio.2020.100059] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 05/22/2020] [Accepted: 05/24/2020] [Indexed: 12/17/2022] Open
Abstract
Heterotopic ossification (HO), the pathological formation of ectopic bone, is a debilitating condition which can cause chronic pain, limit joint movement, and prevent prosthetic limb fitting. The prevalence of this condition has risen in the military population, due to increased survivorship following blast injuries. Current prophylaxes, which aim to target the complex upstream biological pathways, are inconsistently effective and have a range of side-effects that make them unsuitable for combat-injured personnel. As such, many patients must undergo further surgery to remove the formed ectopic bone. In this study, a non-toxic, U.S. Food and Drug Administration (FDA) -approved calcium chelator, hexametaphosphate (HMP), is explored as a novel treatment paradigm for this condition, which targets the chemical, rather that biological, bone formation pathways. This approach allows not only prevention of pathological bone formation but also uniquely facilitates reversal, which current drugs cannot achieve. Targeted, minimally invasive delivery is achieved by loading HMP into an injectable colloidal alginate. These formulations significantly reduce the length of the ectopic bone formed in a rodent model of HO, with no effect on the adjacent skeletal bone. This study demonstrates the potential of localized dissolution as a new treatment and an alternative to surgery for pathological ossification and calcification conditions.
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Affiliation(s)
- T.E. Robinson
- Healthcare Technologies Institute, School of Chemical Engineering, University of Birmingham, Edgbaston, B15 2TT, UK
- Royal Centre for Defence Medicine, Birmingham Research Park, Vincent Drive, Edgbaston, B15 2SQ, UK
| | - N.M. Eisenstein
- Healthcare Technologies Institute, School of Chemical Engineering, University of Birmingham, Edgbaston, B15 2TT, UK
- Royal Centre for Defence Medicine, Birmingham Research Park, Vincent Drive, Edgbaston, B15 2SQ, UK
| | - S.C. Cox
- Healthcare Technologies Institute, School of Chemical Engineering, University of Birmingham, Edgbaston, B15 2TT, UK
| | - R.J.A. Moakes
- Healthcare Technologies Institute, School of Chemical Engineering, University of Birmingham, Edgbaston, B15 2TT, UK
| | - A.M. Thompson
- Neuroscience and Opthalmology, Institute of Inflammation and Ageing, University of Birmingham, Edgbaston, B15 2TT, UK
| | - Z. Ahmed
- Neuroscience and Opthalmology, Institute of Inflammation and Ageing, University of Birmingham, Edgbaston, B15 2TT, UK
| | - E.A.B. Hughes
- Healthcare Technologies Institute, School of Chemical Engineering, University of Birmingham, Edgbaston, B15 2TT, UK
- NIHR Surgical Reconstruction and Microbiology Research Centre, Queen Elizabeth Hospital, Edgbaston, B15 2TH, UK
| | - L.J. Hill
- School of Biomedical Sciences, Institute of Clinical Sciences, University of Birmingham, Edgbaston, B15 2TT, UK
| | - S.A. Stapley
- Royal Centre for Defence Medicine, Birmingham Research Park, Vincent Drive, Edgbaston, B15 2SQ, UK
| | - L.M. Grover
- Healthcare Technologies Institute, School of Chemical Engineering, University of Birmingham, Edgbaston, B15 2TT, UK
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Robinson TE, Hughes EAB, Bose A, Cornish EA, Teo JY, Eisenstein NM, Grover LM, Cox SC. Filling the Gap: A Correlation between Objective and Subjective Measures of Injectability. Adv Healthc Mater 2020; 9:e1901521. [PMID: 31977153 DOI: 10.1002/adhm.201901521] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 01/13/2020] [Indexed: 12/20/2022]
Abstract
Various injectable biomaterials are developed for the minimally invasive delivery of therapeutics. Typically, a mechanical tester is used to ascertain the force required to inject these biomaterials through a given syringe-needle system. However, currently there is no method to correlate the force measured in the laboratory to the perceived effort required to perform that injection by the end user. In this article, the injection force (F) for a variety of biomaterials, displaying a range of rheological properties, is compared with the effort scores from a 50 person panel study. The maximum injection force measured at crosshead speed 1 mm s-1 is a good proxy for injection effort, with an R2 of 0.89. This correlation leads to the following conclusions: participants can easily inject 5 mL of substance for F < 12 N; considerable effort is required to inject 5 mL for 12 N < F < 38 N; great effort is required and <5 mL can be injected for 38 N < F < 64 N; and materials are entirely non-injectable for F > 64 N. These values may be used by developers of injectable biomaterials to make decisions about formulations and needle sizes early in the translational process.
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Affiliation(s)
- Thomas E. Robinson
- School of Chemical EngineeringUniversity of Birmingham Edgbaston B15 2TT UK
| | - Erik A. B. Hughes
- School of Chemical EngineeringUniversity of Birmingham Edgbaston B15 2TT UK
| | - Aniruddha Bose
- School of Chemical EngineeringUniversity of Birmingham Edgbaston B15 2TT UK
| | | | - Jun Y. Teo
- School of Chemical EngineeringUniversity of Birmingham Edgbaston B15 2TT UK
| | - Neil M. Eisenstein
- School of Chemical EngineeringUniversity of Birmingham Edgbaston B15 2TT UK
| | - Liam M. Grover
- School of Chemical EngineeringUniversity of Birmingham Edgbaston B15 2TT UK
| | - Sophie C. Cox
- School of Chemical EngineeringUniversity of Birmingham Edgbaston B15 2TT UK
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