Abstract：
:Cardiac fibrosis, an important pathological feature of structural remodeling, contributes to ventricular stiffness, diastolic dysfunction, arrhythmia and may even lead to sudden death. Matrix stiffness, one of the many mechanical factors acting on cells, is increasingly appreciated as an important mediator of myocardial cell behavior. Polydimethylsiloxane (PDMS) substrates were fabricated with different stiffnesses to mimic physiological and pathological heart tissues, and the way in which the elastic modulus of the substrate regulated matrix-degrading gelatinases in myocardial cells and cardiac fibroblasts was explored. Initially, an increase in cell spreading area was observed, concomitant with the increase in PDMS stiffness in both cells. Later, it was demonstrated that the MMP-2 gene expression and protein activity in myocardial cells and cardiac fibroblasts can be enhanced with an increase in PDMS substrate stiffness and, moreover, such gene- and protein-related increases had a significant linear correlation with the elastic modulus. In comparison, the MMP-9 gene and protein expressions were up-regulated in cardiac fibroblasts only, not in myocardial cells. These results implied that myocardial cells and cardiac fibroblasts in the myocardium could sense the stiffness in pathological fibrosis and showed a differential but positive response in the expression of matrix-degrading gelatinases when exposed to an increased stiffening of the matrix in the microenvironment. The phenomenon of cells sensing pathological matrix stiffness can help to increase understanding of the mechanism underlying myocardial fibrosis and may ultimately lead to planning cure strategies.
journal_name
Acta Biomaterjournal_title
Acta biomaterialiaauthors
Xie J,Zhang Q,Zhu T,Zhang Y,Liu B,Xu J,Zhao Hdoi
10.1016/j.actbio.2014.01.031subject
Has Abstractpub_date
2014-06-01 00:00:00pages
2463-72issue
6eissn
1742-7061issn
1878-7568pii
S1742-7061(14)00049-Xjournal_volume
10pub_type
杂志文章abstract：:Cationic polymer-based vectors have been considered a promising strategy in gene therapy area due to their inherent ability to condense genetic material and successfully transfect cells. However, they usually exhibit high cytotoxicity. In this work, it is proposed the use of a tailor-made gene carrier based on a tri-b...
journal_title：Acta biomaterialia
pub_type： 杂志文章
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更新日期：2017-01-01 00:00:00
abstract：:Blood-contacting medical devices are an integral part of modern medicine. Such devices may be used for only a few hours or may be implanted for life. Despite advances in biomaterial science, clotting on medical devices remains a common problem. Systemic administration of antiplatelet drugs or anticoagulants is often n...
journal_title：Acta biomaterialia
pub_type： 杂志文章,评审
doi：10.1016/j.actbio.2019.06.021
更新日期：2019-08-01 00:00:00
abstract：:The hemodynamic functionality of heart valves strongly depends on the distribution of collagen fibers, which are their main load-bearing constituents. It is known that collagen networks remodel in response to mechanical stimuli. Yet, the complex interplay between external load and collagen remodeling is poorly underst...
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pub_type： 杂志文章
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更新日期：2018-10-15 00:00:00
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journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2012.01.030
更新日期：2012-07-01 00:00:00
abstract：:Multicomponent formulations coupled with complex processing conditions govern the final properties of photopolymerizable dental composites. In this study, a single test substrate was fabricated to support multiple formulations with a gradient in degree of conversion (DC), allowing the evaluation of multiple processing...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2009.01.043
更新日期：2009-07-01 00:00:00
abstract：:It is important to understand the effects of mechanical stimulation on cell behaviors for homeostasis. Many studies have been performed on cell responses to mechanical stimuli, but the mechanosensing mechanism is still under debate. In the present study, experiments employing molecular dynamics (MD) simulations concer...
journal_title：Acta biomaterialia
pub_type： 杂志文章
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更新日期：2021-02-01 00:00:00
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journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2010.03.010
更新日期：2010-09-01 00:00:00
abstract：:Spatiotemporally controlled release of growth factors (GFs) is critical for regenerative processes such as angiogenesis. A common strategy is to encapsulate the GF within hydrogels, with release being controlled via diffusion and/or gel degradation (i.e., hydrolysis and/or proteolysis). However, simple encapsulation s...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2016.09.026
更新日期：2016-12-01 00:00:00
abstract：:The high brittleness and low strength of bioactive ceramics have severely restricted their application in bone repair despite the fact that they have been regarded as one of the most promising biomaterials. In the last few years, low-dimensional nanomaterials (LDNs), including carbon nanotubes, graphene and boron nitr...
journal_title：Acta biomaterialia
pub_type： 杂志文章,评审
doi：10.1016/j.actbio.2017.05.020
更新日期：2017-10-01 00:00:00
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journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2017.01.040
更新日期：2017-03-15 00:00:00
abstract：:An important aim of bone regenerative medicine is to design biomaterials with controlled chemical and topographical features to guide stem cell fate towards osteoblasts without addition of specific osteogenic factors. Herein, we find that sprayed bioactive and biocompatible calcium phosphate substrates (CaP) with cont...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2016.11.042
更新日期：2017-02-01 00:00:00
abstract：UNLABELLED:Cellular microenvironments present cells with multiple stimuli, including not only soluble biochemical and insoluble matrix cues but also mechanical factors. Biomaterial array platforms have been used to combinatorially and efficiently probe and define two-dimensional (2D) and 3D microenvironmental cues to g...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2015.11.054
更新日期：2016-04-01 00:00:00
abstract：:A novel processing route was proposed for the fabrication of biodegradable Mg-Ca binary alloys with high Ca contents (2-3 wt.%) in sheet form with enhanced biocorrosion resistance by tailoring their microstructures. The effective refinement and dispersion of the Mg2Ca phase in the Mg-Ca alloys using extrusion followed...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2014.09.029
更新日期：2015-01-01 00:00:00
abstract：:A pH-sensitive copolymer PAsp(DIP)-b-PAsp(MEA) (PDPM) was synthesized and self-assembled to micelle loading chemotherapeutic drug doxorubicin (DOX) and introducing a gold nanocage structure for photothermo-chemotherapy and photoacoustic imaging. After further surface modification with polyethylene glycol (PEG), the DO...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2017.10.018
更新日期：2017-12-01 00:00:00
abstract：:Recently, the ligament-bone (LTB) junction has been emphasized for the effective transmission of mechanical force and the reduction in stress concentration between the soft ligament and hard bone tissue. The aim of this study was to regenerate an integrated LTB interface by inoculating LTB-relevant cells, isolated fro...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2010.08.017
更新日期：2011-01-01 00:00:00
abstract：UNLABELLED:Despite advances in polymeric nanoparticles (NPs) as effective delivery systems for anticancer drugs, rapid clearance from blood and poor penetration capacity in heterogeneous tumors still remain to be addressed. Here, a dual coating of poly (ethylene glycol)-poly (d,l-lactic acid) (PEG-PDLLA) and water-solu...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2015.10.017
更新日期：2016-01-01 00:00:00
abstract：:Vocal fold lamina propria extracellular matrix (ECM) is highly aligned and when injured, becomes disorganized with loss of the tissue's critical biomechanical properties. This study examines the effects of electrospun fiber scaffold architecture and elastin-like polypeptide (ELP4) coating on human vocal fold fibroblas...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2014.10.039
更新日期：2015-02-01 00:00:00
abstract：:Silicon-doped hydroxyapatite has been functionalized with biotin molecules as a new methodology for the attachment of proteins, peptides or growth factors through the formation of avidin-biotin complex in this material. Bioceramic biotinylation has been performed by esterification reaction between the OH groups of hyd...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2009.09.004
更新日期：2010-03-01 00:00:00
abstract：:Introducing neural stem/progenitor cells (NS/PCs) for repairing facial nerve injuries could be an alternative strategy for nerve gap reconstruction. However, the lack of success associated with current methods of applying NS/PCs to neurological disease is due to poor engraftment following transplantation into the host...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2016.11.064
更新日期：2017-03-01 00:00:00
abstract：:Despite their known osteoconductivity, clinical use of calcium phosphate cements is limited both by their relatively slow rate of resorption and by rheological properties incompatible with injectability. Bone in-growth and material resorption have been improved by the development of porous calcium phosphate cements. H...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2010.12.012
更新日期：2011-04-01 00:00:00
abstract：:Biocompatible polymer solutions that can crosslink in situ following injection to form stable hydrogels are of interest as depots for sustained delivery of therapeutic factors or cells, and as scaffolds for regenerative medicine. Here, injectable self-gelling alginate formulations obtained by mixing alginate microsphe...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2008.11.019
更新日期：2009-05-01 00:00:00
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journal_title：Acta biomaterialia
pub_type： 杂志文章,评审
doi：10.1016/j.actbio.2015.03.025
更新日期：2015-07-01 00:00:00
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journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2020.10.008
更新日期：2020-12-01 00:00:00
abstract：:Silk fibroin-chitosan (SFCS) scaffold is a naturally derived biocompatible matrix with potential reconstructive surgical applications. In this study, human adipose-derived mesenchymal stem cells (ASCs) were seeded on SFCS scaffolds and cell attachment was characterized by fluorescence, confocal, time-lapse, atomic for...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2009.10.034
更新日期：2010-04-01 00:00:00
abstract：UNLABELLED:Antimicrobial peptides (AMPs) are good candidates to treat burn wounds, a major cause of morbidity, impaired life quality and resources consumption in developed countries. We took advantage of a commercially available hydrogel, Carbopol®, a vehicle for topical administration that maintains a moist environmen...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2015.07.043
更新日期：2015-10-01 00:00:00
abstract：:Magnesium is a trace element in the human body, known to have important effects on cell differentiation and the mineralisation of calcified tissues. This study aimed to synthesise highly porous Ca-Mg silicate foamed scaffolds from preceramic polymers, with analysis of their biological response. Akermanite (Ak) and wol...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2016.12.043
更新日期：2017-03-01 00:00:00
abstract：:Photochemical internalisation (PCI) is a method for enhancing delivery of drugs to their intracellular target sites of action. In this study we investigated the efficacy of PCI using a porphyrin photosensitiser and a cytotoxic agent on spheroid and non-spheroid compressed collagen 3D constructs of ovarian cancer versu...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2018.09.041
更新日期：2018-11-01 00:00:00
abstract：:Self-assembling peptides programed by sequence design to form predefined nanostructures are useful for a variety of biomedical applications. However, assemblies of classic ionic self-complementary peptides are unstable in neutral pH, while charged peptide hydrogels have low mechanical strength. Here, we report on the ...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2017.03.041
更新日期：2017-06-01 00:00:00
abstract：:The development of polyelectrolyte multilayered coatings on magnesium alloy substrates that can be used for controlled delivery of growth factors and required biomolecules from the surface of these degradable implants could have a significant impact in the field of bone tissue regeneration. The current work reports on...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2013.05.013
更新日期：2013-11-01 00:00:00
abstract：UNLABELLED:Type I collagen is widely applied as a biomaterial for tissue regeneration. In the extracellular matrix, collagen provides strength but not elasticity under large deformations, a characteristic crucial for dynamic organs and generally imparted by elastic fibers. In this study, a methodology is described to i...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2016.08.038
更新日期：2016-10-15 00:00:00
