Abstract:
:Cell processes, including growth cones, respond to biophysical cues in their microenvironment to establish functional tissue architecture and intercellular networks. The mechanisms by which cells sense and translate biophysical cues into directed growth are unknown. We used photopolymerization to fabricate methacrylate platforms with patterned microtopographical features that precisely guide neurite growth and Schwann cell alignment. Pharmacologic inhibition of the transient receptor potential cation channel subfamily V member 1 (TRPV1) or reduced expression of TRPV1 by RNAi significantly disrupts neurite guidance by these microtopographical features. Exogenous expression of TRPV1 induces alignment of NIH3T3 fibroblasts that fail to align in the absence of TRPV1, further implicating TRPV1 channels as critical mediators of cellular responses to biophysical cues. Microtopographic features increase RhoA activity in growth cones and in TRPV1-expressing NIH3T3 cells. Further, Rho-associated kinase (ROCK) phosphorylation is elevated in growth cones and neurites on micropatterned surfaces. Inhibition of RhoA/ROCK by pharmacological compounds or reduced expression of either ROCKI or ROCKII isoforms by RNAi abolishes neurite and cell alignment, confirming that RhoA/ROCK signaling mediates neurite and cell alignment to microtopographic features. These studies demonstrate that microtopographical cues recruit TRPV1 channels and downstream signaling pathways, including RhoA and ROCK, to direct neurite and cell growth.
journal_name
Biomaterialsjournal_title
Biomaterialsauthors
Li S,Tuft BW,Xu L,Polacco MA,Clarke JC,Guymon CA,Hansen MRdoi
10.1016/j.biomaterials.2015.02.057subject
Has Abstractpub_date
2015-06-01 00:00:00pages
95-106eissn
0142-9612issn
1878-5905pii
S0142-9612(15)00181-7journal_volume
53pub_type
杂志文章相关文献
BIOMATERIALS文献大全abstract::In an effort to examine liver injury, immune response, and other physiological effects in mice caused by intragastric administration of nanoparticulate anatase titanium dioxide (5nm), we assessed T lymphocytes, B lymphocyte and NK lymphocyte counts, hematological indices, biochemical parameters of liver functions, and...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2009.10.003
更新日期:2010-02-01 00:00:00
abstract::Pancreatic cancer has the worst prognosis of all cancers due to disease aggressiveness and paucity of early detection platforms. We developed biomaterial scaffolds that recruit metastatic tumor cells and reflect the immune dysregulation of native metastatic sites. While this platform has shown promise in orthotopic br...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2020.120632
更新日期:2020-12-23 00:00:00
abstract::Scaffold design plays a crucial role in developing graft-based regenerative strategies, especially when intended to be used in a highly ordered nerve tissue. Here we describe a hybrid matrix approach, which combines the structural properties of collagen (type I) with the epitope-presenting ability of peptide amphiphil...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2011.09.093
更新日期:2012-01-01 00:00:00
abstract::In order to increase the functionality of islets encapsulated in a biohybrid artificial pancreas (BAP), it was proposed that co-encapsulation with insulinotropic agents would improve insulin secretion from islets. To prevent agents from leaking out, conjugation with high-molecular-weight polymers was inevitable. In th...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2004.09.045
更新日期:2005-06-01 00:00:00
abstract::The use of biochemical signaling to derive smooth muscle cells (SMCs) from mesenchymal stem cells (MSCs) has been explored, but the induction of a fully functional SMC phenotype remains to be a major challenge. Cell morphology has been shown to regulate MSC differentiation into various lineages, including SMCs. We eng...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2019.03.003
更新日期:2019-06-01 00:00:00
abstract::Dacron velour is often used to anchor a percutaneous device, like the catheter used in peritoneal dialysis. However, exit-site infections complicate this method of dialysis and are supposed to be related to the design of the catheter. In animal experiments, a percutaneous device provided with a titanium fibre mesh to ...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/0142-9612(96)84946-5
更新日期:1996-06-01 00:00:00
abstract::Developing repair strategies for osteochondral tissue presents complex challenges due to its interfacial nature and complex zonal structure, consisting of subchondral bone, intermediate calcified cartilage and the superficial cartilage regions. In this study, the long term ability of a multi-layered biomimetic collage...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2016.02.006
更新日期:2016-05-01 00:00:00
abstract::The use of a composite graft of bovine trabecular demineralized bone matrix (DBM) and perichondrium has been found a reliable method for in vivo generation of cartilage. In the present study, the mechanism whereby this commercially available matrix increases cartilage formation was investigated. First, the time course...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/s0142-9612(98)00165-3
更新日期:1999-02-01 00:00:00
abstract::Boiling diluted alkali incubation was found to be an effective way to prepare bioactive Ti6Al4V surfaces, whether polished or not, as indicated in vitro after immersion in two different supersaturated calcification solutions (SCSs). The induction of calcium phosphate (Ca-P) precipitation from the SCSs is most probably...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/s0142-9612(97)00232-9
更新日期:1998-01-01 00:00:00
abstract::Following our recent report of attractive antibacterial properties of a designed amphiphilic peptide, A(9)K, we have investigated its antitumor activities by examining the modes of its action against different mammalian cell types. The peptide strongly inhibited the growth of cancerous HeLa cells and human promyelocyt...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2012.12.039
更新日期:2013-04-01 00:00:00
abstract::Bioengineered tissue equivalents should provide physiologically relevant biochemical and mechanical cues to support the growth and differentiation of seeded cells. Herein, tubular dense collagen constructs (TDCCs) with collagen content comparable to native extracellular matrix were used to investigate the effect of sh...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2012.11.025
更新日期:2013-03-01 00:00:00
abstract::Skeletal muscle is a highly organized tissue in which the extracellular matrix (ECM) is composed of highly-aligned cables of collagen with nanoscale feature sizes, and provides structural and functional support to muscle fibers. As such, the transplantation of disorganized tissues or the direct injection of cells into...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2013.10.067
更新日期:2014-02-01 00:00:00
abstract::Dense, reconstituted collagen membranes, using an optimized cross-linking protocol, were implanted subcutaneously into rats. After implantation, only a mild inflammatory response in the surrounding tissues was observed. The morphology of the fibroblasts around the membranes was seen to go through characteristic stages...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/0142-9612(95)98905-t
更新日期:1995-09-01 00:00:00
abstract::The main challenge for neural progenitor cell (NPC)-mediated repair of spinal cord injury (SCI) is lack of favorable environment to direct its differentiation towards neurons rather than glial cells. The myelin associated inhibitors have been demonstrated to promote NPC differentiation into glial lineage. Herein, to i...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2013.03.062
更新日期:2013-07-01 00:00:00
abstract::The purpose of this study was to quantify and compare the amount of water absorbed by six commercially available resin-modified glass ionomer cements and to investigate the possible influence of time and resin content on water sorption. The materials evaluated included Variglass used as a restoration, base and liner; ...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/0142-9612(95)00344-4
更新日期:1996-10-01 00:00:00
abstract::Different families of functionalized polymers with potential as biomaterials, or for biomaterial modification, have been investigated. In particular, degradation studies have been performed on poly(amidoamines), a family of polymers obtained by polyaddition of amines to bisacrylamides, and endowed with heparin-complex...
journal_title:Biomaterials
pub_type: 杂志文章,评审
doi:10.1016/0142-9612(94)90275-5
更新日期:1994-12-01 00:00:00
abstract::MicroRNAs (miRNA, miR) have been reported as cancer biomarkers that regulate tumor suppressor genes. Hence, simultaneous detecting and inhibiting of miRNA function will be useful as a cancer theragnostics probe to minimize side effects and invasiveness. In this study, we developed a cancer-targeting therangostics prob...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2011.09.023
更新日期:2012-01-01 00:00:00
abstract::The aim of this study was to evaluate the physical-chemical properties, in vivo biocompatibility and antimicrobial activity of bioactive glasses (BG) used as a controlled release device for tetracycline hydrochloride and an inclusion complex formed by tetracycline and beta-cyclodextrin at 1:1 molar ratio. The BG as we...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/s0142-9612(03)00524-6
更新日期:2004-01-01 00:00:00
abstract::Previous studies have shown that high impact strength can be conferred on denture-base poly(methyl methacrylate) polymers by modification with acrylic-terminated butadiene-styrene block copolymers, and that the acrylic end-group was necessary for effective reinforcement. It is now shown that, by solvent extraction stu...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/0142-9612(92)90135-b
更新日期:1992-01-01 00:00:00
abstract::An implantable, anti-microbial delivery device for the treatment of periodontal disease has been developed. In this polymer-based delivery system, the encapsulation efficiency, release characteristics, and bioactivity of anti-microbial agent were controlled by the complexation of the drug with cyclodextrins of differi...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2003.09.113
更新日期:2004-08-01 00:00:00
abstract::Improving the immunogenicity of subunit vaccines, in particular skewing of the immune response towards Th1 type immunity, is crucial for the development of effective vaccines against intracellular infections and for the development of anti-cancer vaccines. Small molecule TLR7/8 agonist hold high potential for this pur...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2018.03.026
更新日期:2018-09-01 00:00:00
abstract::Theranostic nanoagents which integrate diagnostic and therapeutic moieties into a single platform have attracted broad attention in cancer therapy, however the development of more effective and less toxic diagnostic and therapeutic interventions is still of great urgency. Herein, novel core-shell PB@MIL-100(Fe) dual m...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2016.05.027
更新日期:2016-09-01 00:00:00
abstract::We report a reducible copolymer self-assembled with superparamagnetic iron oxide nanoparticles (SPIONs) to deliver doxorubicin (DOX) for cancer therapy. The copolymer of reducible polyamidoamine (rPAA) with poly(ethylene glycol)(PEG)/dodecyl amine graft was synthesized by Michael addition. rPAA@SPIONs were formed by t...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2013.10.057
更新日期:2014-01-01 00:00:00
abstract::This study describes a family of hollow nanoscale constructs able to display a large and reversible change in size, within a narrow temperature interval. These thermoresponsive nanostructures are generated by crosslinking functionalized amphiphilic molecules, such as poly(ethylene oxide)-poly(propylene oxide)-poly(eth...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2009.02.026
更新日期:2009-07-01 00:00:00
abstract::We studied the adhesion and proliferation of human endothelial cells on photochemically modified polytetrafluoroethylene samples. The polymer surfaces were modified by exposure to the ultraviolet light of a Xe(2)(*)-excimer lamp at a wavelength of 172 nm in an ammonia atmosphere. Treatment times were between 10 and 20...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/s0142-9612(03)00460-5
更新日期:2003-12-01 00:00:00
abstract::A novel class of hyperbranched polymers based on polyglycerol (PG) and poly(ethylene glycol) (PEG) are synthesized by multibranching anionic ring opening polymerization. Multivalent cationic sites are added to these polymers by a post-amination and quarternization reactions. Blood compatibility studies using these pol...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2006.06.021
更新日期:2006-11-01 00:00:00
abstract::In order to assess the suitability of polymer tissue scaffolds for use in regenerative medicine, methods to characterise scaffolds are needed. This requires the scaffold's structure to be determined for which X-ray microscopic computed tomography (X-ray micro CT) is widely used. However, because scaffolds are generall...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2009.04.035
更新日期:2009-09-01 00:00:00
abstract::Polyethylene terephthalate (PET), ethylene-vinyl alcohol copolymer (EVOH) and Nylon 6 in plate form were treated with silane-coupling agents, a titanium alkoxide-alcohol solution and a hot HCl solution to form a thin crystalline titanium oxide layer. When placed in a simulated body fluid with ion concentrations nearly...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2005.10.004
更新日期:2006-03-01 00:00:00
abstract::The concentrations of soluble copper and tin which were generated by the corrosion of a number of different amalgams in both an artificial saliva and Ringer's solution are reported. Besides variations in solution composition, the effects of solution agitation and abrasive particle wear upon the release of soluble spec...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/0142-9612(84)90015-2
更新日期:1984-07-01 00:00:00
abstract::Platelet concentrates (PCs) constitute new biological mediators used in osseous reconstructive surgery. In this study, we assessed (i) the effects of various concentrations of calcium and thrombin on the kinetics of platelet-derived growth factor (PDGF-BB), transforming growth factor-beta1(TGF-beta 1), basic fibroblas...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2003.11.013
更新日期:2004-08-01 00:00:00