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Cryo‐Immunoelectron Microscopy of Adherent Cells Improved by the Use of Electrospun Cell Culture Substrates
Authors:Thomas Schmiedinger  Georg F. Vogel  Oliver Eiter  Kristian Pfaller  Walter A. Kaufmann  Angelika Flörl  Karin Gutleben  Sabine Schönherr  Barbara Witting  Thomas W. Lechleitner  Hannes‐L. Ebner  Thomas Seppi  Michael W. Hess
Affiliation:1. Department of Therapeutic Radiology and Oncology, Innsbruck Medical University, , A‐6020 Innsbruck, Austria;2. Division of Histology and Embryology, Innsbruck Medical University, , A‐6020 Innsbruck, Austria;3. Division of Cell Biology, Biocenter, Innsbruck Medical University, , A‐6020 Innsbruck, Austria;4. Institute of Pharmacology, Innsbruck Medical University, , A‐6020 Innsbruck, Austria;5. Department for Trauma Surgery, Innsbruck Medical University, , A‐6020 Innsbruck, Austria
Abstract:
Electrospun nanofibres are an excellent cell culture substrate, enabling the fast and non‐disruptive harvest and transfer of adherent cells for microscopical and biochemical analyses. Metabolic activity and cellular structures are maintained during the only half a minute‐long harvest and transfer process. We show here that such samples can be optimally processed by means of cryofixation combined either with freeze‐substitution, sample rehydration and cryosection‐immunolabelling or with freeze‐fracture replica‐immunolabelling. Moreover, electrospun fibre substrates are equally suitable for complementary approaches, such as biochemistry, fluorescence microscopy and cytochemistry.
Keywords:cell culture  cryofixation  cryosections  electrospinning  freeze‐fracture replica labelling  freeze‐ substitution  gelatin nanofibres  high‐pressure freezing  immunogold
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