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Sánchez MF, Tampé R. Ligand-independent receptor clustering modulates transmembrane signaling: a new paradigm. Trends Biochem Sci 2023; 48:156-171. [PMID: 36115755 DOI: 10.1016/j.tibs.2022.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 07/22/2022] [Accepted: 08/02/2022] [Indexed: 01/25/2023]
Abstract
Cell-surface receptors mediate communication between cells and their environment. Lateral membrane organization and dynamic receptor cluster formation are fundamental in signal transduction and cell signaling. However, it is not yet fully understood how receptor clustering modulates a wide variety of physiologically relevant processes. Recent growing evidence indicates that biological responses triggered by membrane receptors can be modulated even in the absence of the natural receptor ligand. We review the most recent findings on how ligand-independent receptor clustering can regulate transmembrane signaling. We discuss the latest technologies to control receptor assembly, such as DNA nanotechnology, optogenetics, and optochemistry, focusing on the biological relevance and unraveling of ligand-independent signaling.
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Affiliation(s)
- M Florencia Sánchez
- Institute of Biochemistry, Biocenter, Goethe University Frankfurt, Max-von-Laue-Strasse 9, 60438 Frankfurt am Main, Germany
| | - Robert Tampé
- Institute of Biochemistry, Biocenter, Goethe University Frankfurt, Max-von-Laue-Strasse 9, 60438 Frankfurt am Main, Germany.
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Sánchez MF, Dietz MS, Müller U, Weghuber J, Gatterdam K, Wieneke R, Heilemann M, Lanzerstorfer P, Tampé R. Dynamic in Situ Confinement Triggers Ligand-Free Neuropeptide Receptor Signaling. NANO LETTERS 2022; 22:8363-8371. [PMID: 36219818 PMCID: PMC9614963 DOI: 10.1021/acs.nanolett.2c03506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 09/25/2022] [Indexed: 06/16/2023]
Abstract
Membrane receptor clustering is fundamental to cell-cell communication; however, the physiological function of receptor clustering in cell signaling remains enigmatic. Here, we developed a dynamic platform to induce cluster formation of neuropeptide Y2 hormone receptors (Y2R) in situ by a chelator nanotool. The multivalent interaction enabled a dynamic exchange of histidine-tagged Y2R within the clusters. Fast Y2R enrichment in clustered areas triggered ligand-independent signaling as determined by an increase in cytosolic calcium and cell migration. Notably, the calcium and motility response to ligand-induced activation was amplified in preclustered cells, suggesting a key role of receptor clustering in sensitizing the dose response to lower ligand concentrations. Ligand-independent versus ligand-induced signaling differed in the binding of arrestin-3 as a downstream effector, which was recruited to the clusters only in the presence of the ligand. This approach allows in situ receptor clustering, raising the possibility to explore different receptor activation modalities.
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Affiliation(s)
- M. Florencia Sánchez
- Institute
of Biochemistry, Biocenter, Goethe University
Frankfurt, Max-von-Laue-Str.
9, 60438 Frankfurt
am Main, Germany
| | - Marina S. Dietz
- Institute
of Physical and Theoretical Chemistry, Goethe
University Frankfurt, Max-von-Laue-Str. 7, 60438 Frankfurt am Main, Germany
| | - Ulrike Müller
- School
of Engineering and Environmental Sciences, University of Applied Sciences Upper Austria, 4600 Wels, Austria
| | - Julian Weghuber
- School
of Engineering and Environmental Sciences, University of Applied Sciences Upper Austria, 4600 Wels, Austria
- FFoQSI
- Austrian Competence Centre for Feed and Food Quality, Safety &
Innovation, FFoQSI GmbH, Technopark 1D, 3430 Tulln, Austria
| | - Karl Gatterdam
- Institute
of Biochemistry, Biocenter, Goethe University
Frankfurt, Max-von-Laue-Str.
9, 60438 Frankfurt
am Main, Germany
| | - Ralph Wieneke
- Institute
of Biochemistry, Biocenter, Goethe University
Frankfurt, Max-von-Laue-Str.
9, 60438 Frankfurt
am Main, Germany
| | - Mike Heilemann
- Institute
of Physical and Theoretical Chemistry, Goethe
University Frankfurt, Max-von-Laue-Str. 7, 60438 Frankfurt am Main, Germany
| | - Peter Lanzerstorfer
- School
of Engineering and Environmental Sciences, University of Applied Sciences Upper Austria, 4600 Wels, Austria
| | - Robert Tampé
- Institute
of Biochemistry, Biocenter, Goethe University
Frankfurt, Max-von-Laue-Str.
9, 60438 Frankfurt
am Main, Germany
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