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Stadlbauer V, Lanzerstorfer P, Neuhauser C, Weber F, Stübl F, Weber P, Wagner M, Plochberger B, Wieser S, Schneckenburger H, Weghuber J. Fluorescence Microscopy-Based Quantitation of GLUT4 Translocation: High Throughput or High Content? Int J Mol Sci 2020; 21:ijms21217964. [PMID: 33120934 PMCID: PMC7662403 DOI: 10.3390/ijms21217964] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 10/21/2020] [Accepted: 10/24/2020] [Indexed: 02/06/2023] Open
Abstract
Due to the global rise of type 2 diabetes mellitus (T2DM) in combination with insulin resistance, novel compounds to efficiently treat this pandemic disease are needed. Screening for compounds that induce the translocation of glucose transporter 4 (GLUT4) from the intracellular compartments to the plasma membrane in insulin-sensitive tissues is an innovative strategy. Here, we compared the applicability of three fluorescence microscopy-based assays optimized for the quantitation of GLUT4 translocation in simple cell systems. An objective-type scanning total internal reflection fluorescence (TIRF) microscopy approach was shown to have high sensitivity but only moderate throughput. Therefore, we implemented a prism-type TIR reader for the simultaneous analysis of large cell populations grown in adapted microtiter plates. This approach was found to be high throughput and have sufficient sensitivity for the characterization of insulin mimetic compounds in live cells. Finally, we applied confocal microscopy to giant plasma membrane vesicles (GPMVs) formed from GLUT4-expressing cells. While this assay has only limited throughput, it offers the advantage of being less sensitive to insulin mimetic compounds with high autofluorescence. In summary, the combined implementation of different fluorescence microscopy-based approaches enables the quantitation of GLUT4 translocation with high throughput and high content.
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Affiliation(s)
- Verena Stadlbauer
- School of Engineering, University of Applied Sciences Upper Austria, Stelzhamerstraße 23, 4600 Wels, Austria; (C.N.); (F.S.)
- FFoQSI GmbH-Austrian Competence Centre for Feed and Food Quality, Safety and Innovation, Technopark 1C, 3430 Tulln, Austria
- Correspondence: (V.S.); (P.L.); (J.W.); Tel.: +43-050804-44450 (V.S.); +43-050804-44402 (P.L.); +43-050804-44403 (J.W.)
| | - Peter Lanzerstorfer
- School of Engineering, University of Applied Sciences Upper Austria, Stelzhamerstraße 23, 4600 Wels, Austria; (C.N.); (F.S.)
- FFoQSI GmbH-Austrian Competence Centre for Feed and Food Quality, Safety and Innovation, Technopark 1C, 3430 Tulln, Austria
- Correspondence: (V.S.); (P.L.); (J.W.); Tel.: +43-050804-44450 (V.S.); +43-050804-44402 (P.L.); +43-050804-44403 (J.W.)
| | - Cathrina Neuhauser
- School of Engineering, University of Applied Sciences Upper Austria, Stelzhamerstraße 23, 4600 Wels, Austria; (C.N.); (F.S.)
- FFoQSI GmbH-Austrian Competence Centre for Feed and Food Quality, Safety and Innovation, Technopark 1C, 3430 Tulln, Austria
| | - Florian Weber
- School of Medical Engineering and Applied Social Sciences, University of Applied Sciences Upper Austria, Garnisonstraße 21, 4020 Linz, Austria; (F.W.); (B.P.)
| | - Flora Stübl
- School of Engineering, University of Applied Sciences Upper Austria, Stelzhamerstraße 23, 4600 Wels, Austria; (C.N.); (F.S.)
| | - Petra Weber
- Institute of Applied Research, Aalen University, Beethovenstraße 1, 73430 Aalen, Germany; (P.W.); (M.W.); (H.S.)
| | - Michael Wagner
- Institute of Applied Research, Aalen University, Beethovenstraße 1, 73430 Aalen, Germany; (P.W.); (M.W.); (H.S.)
| | - Birgit Plochberger
- School of Medical Engineering and Applied Social Sciences, University of Applied Sciences Upper Austria, Garnisonstraße 21, 4020 Linz, Austria; (F.W.); (B.P.)
| | - Stefan Wieser
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Spain;
| | - Herbert Schneckenburger
- Institute of Applied Research, Aalen University, Beethovenstraße 1, 73430 Aalen, Germany; (P.W.); (M.W.); (H.S.)
| | - Julian Weghuber
- School of Engineering, University of Applied Sciences Upper Austria, Stelzhamerstraße 23, 4600 Wels, Austria; (C.N.); (F.S.)
- FFoQSI GmbH-Austrian Competence Centre for Feed and Food Quality, Safety and Innovation, Technopark 1C, 3430 Tulln, Austria
- Correspondence: (V.S.); (P.L.); (J.W.); Tel.: +43-050804-44450 (V.S.); +43-050804-44402 (P.L.); +43-050804-44403 (J.W.)
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