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Samp1 is a component of TAN lines and is required for nuclear movement

Authors: Thibaud Jegou; Edgar R. Gomes; Joana Borrego-Pinto; Iain W. Mattaj; Mátyás Gorjánácz; Birgit Koch; Daniel S. Osorio; +2 Authors

Samp1 is a component of TAN lines and is required for nuclear movement

Abstract

The position of the nucleus is regulated in different developmental stages and cellular events. During polarization, the nucleus moves away from the future leading edge and this movement is required for proper cell migration. Nuclear movement requires the LINC complex components nesprin-2G and SUN2, which form transmembrane actin-associated nuclear (TAN) lines at the nuclear envelope. Here we show that the nuclear envelope protein Samp1 (NET5) is involved in nuclear movement during fibroblast polarization and migration. Moreover, we demonstrate that Samp1 is a component of TAN lines that contain nesprin-2G and SUN2. Finally, Samp1 associates with SUN2 and lamin A/C, and the presence of Samp1 at the nuclear envelope requires lamin A/C. These results support a role for Samp1 in the association between the LINC complex and lamins during nuclear movement.

Keywords

Cell Nucleus, Nuclear Envelope, Telomere-Binding Proteins, Membrane Proteins, Nuclear Proteins, Nerve Tissue Proteins, Lamin Type A, Cell Line, Mice, Cell Movement, Animals, RNA Interference, Schizosaccharomyces pombe Proteins, RNA, Small Interfering

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Powered by OpenAIRE graph
citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
94
Top 10%
Top 10%
Top 10%