Magnetic Beads Enhance Adhesion of NIH 3T3 Fibroblasts: A Proof-of-Principle In Vitro Study for Implant-Mediated Long-Term Drug Delivery to the Inner Ear

Long-term drug delivery to the inner ear may be achieved by functionalizing cochlear implant (CI) electrodes with cells providing neuroprotective factors. However, effective strategies in order to coat implant surfaces with cells need to be developed. Our vision is to make benefit of electromagnetic...

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Veröffentlicht in:PloS one 2016-02, Vol.11 (2), p.e0150057-e0150057
Hauptverfasser: Aliuos, Pooyan, Schulze, Jennifer, Schomaker, Markus, Reuter, Günter, Stolle, Stefan R O, Werner, Darja, Ripken, Tammo, Lenarz, Thomas, Warnecke, Athanasia
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creator Aliuos, Pooyan
Schulze, Jennifer
Schomaker, Markus
Reuter, Günter
Stolle, Stefan R O
Werner, Darja
Ripken, Tammo
Lenarz, Thomas
Warnecke, Athanasia
description Long-term drug delivery to the inner ear may be achieved by functionalizing cochlear implant (CI) electrodes with cells providing neuroprotective factors. However, effective strategies in order to coat implant surfaces with cells need to be developed. Our vision is to make benefit of electromagnetic field attracting forces generated by CI electrodes to bind BDNF-secreting cells that are labelled with magnetic beads (MB) onto the electrode surfaces. Thus, the effect of MB-labelling on cell viability and BDNF production were investigated. Murine NIH 3T3 fibroblasts-genetically modified to produce BDNF-were labelled with MB. Atomic force and bright field microscopy illustrated the internalization of MB by fibroblasts after 24 h of cultivation. Labelling cells with MB did not expose cytotoxic effects on fibroblasts and allowed adhesion on magnetic surfaces with sufficient BDNF release. Our data demonstrate a novel approach for mediating enhanced long-term adhesion of BDNF-secreting fibroblasts on model electrode surfaces for cell-based drug delivery applications in vitro and in vivo. This therapeutic strategy, once transferred to cells suitable for clinical application, may allow the biological modifications of CI surfaces with cells releasing neurotrophic or other factors of interest.
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However, effective strategies in order to coat implant surfaces with cells need to be developed. Our vision is to make benefit of electromagnetic field attracting forces generated by CI electrodes to bind BDNF-secreting cells that are labelled with magnetic beads (MB) onto the electrode surfaces. Thus, the effect of MB-labelling on cell viability and BDNF production were investigated. Murine NIH 3T3 fibroblasts-genetically modified to produce BDNF-were labelled with MB. Atomic force and bright field microscopy illustrated the internalization of MB by fibroblasts after 24 h of cultivation. Labelling cells with MB did not expose cytotoxic effects on fibroblasts and allowed adhesion on magnetic surfaces with sufficient BDNF release. Our data demonstrate a novel approach for mediating enhanced long-term adhesion of BDNF-secreting fibroblasts on model electrode surfaces for cell-based drug delivery applications in vitro and in vivo. 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subjects Adhesion
Animals
Atomic force microscopy
Beads
Biology and Life Sciences
Biomedical materials
Brain research
Brain-derived neurotrophic factor
Brain-Derived Neurotrophic Factor - administration & dosage
Brain-Derived Neurotrophic Factor - genetics
Cell Survival - drug effects
Coating effects
Cochlea
Cochlear Implants
Cultivation
Cytotoxicity
Data processing
Drug delivery
Drug Delivery Systems
Drug Implants
Ear, Inner - drug effects
Electrodes
Electromagnetic fields
Emulsion polymerization
Fibroblasts
Genetic modification
Hair
Hearing impairment
Hearing loss
Inner ear
Internalization
Labeling
Labelling
Magnetics
Medical schools
Medicine and Health Sciences
Mice
Microscopy
Neurons
Neuroprotection
NIH 3T3 Cells
Otolaryngology
Physical Sciences
Physiological aspects
Research and Analysis Methods
Signal transduction
Studies
Surgery
Surgical implants
Transplants & implants
title Magnetic Beads Enhance Adhesion of NIH 3T3 Fibroblasts: A Proof-of-Principle In Vitro Study for Implant-Mediated Long-Term Drug Delivery to the Inner Ear
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-28T06%3A37%3A46IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-gale_plos_&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Magnetic%20Beads%20Enhance%20Adhesion%20of%20NIH%203T3%20Fibroblasts:%20A%20Proof-of-Principle%20In%20Vitro%20Study%20for%20Implant-Mediated%20Long-Term%20Drug%20Delivery%20to%20the%20Inner%20Ear&rft.jtitle=PloS%20one&rft.au=Aliuos,%20Pooyan&rft.date=2016-02-26&rft.volume=11&rft.issue=2&rft.spage=e0150057&rft.epage=e0150057&rft.pages=e0150057-e0150057&rft.issn=1932-6203&rft.eissn=1932-6203&rft_id=info:doi/10.1371/journal.pone.0150057&rft_dat=%3Cgale_plos_%3EA444363791%3C/gale_plos_%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=1771271295&rft_id=info:pmid/26918945&rft_galeid=A444363791&rft_doaj_id=oai_doaj_org_article_bbbfe577304a4c5aa1f302d1c6572589&rfr_iscdi=true