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. 2021 Sep 21;9:715868. doi: 10.3389/fcell.2021.715868

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Copyright © 2021 Giordano, Pirone, Muratore, Landaluze, Pérez, Lang, Garde-Lapido, Gonzalez-Lopez, Barroso-Gomila, Vertegaal, Aransay, Rodriguez, Rodriguez, Sutherland and Barrio.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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SALL1 and CBX4 interact in the nucleoplasm. (A–D) Confocal pictures of a proximity ligation assay (PLA) showing in situ interaction of SALL1 and CBX4 in the nucleus of U2OS cells, visualized as magenta spots. Cells were transfected with SALL1-HA or with the empty pcDNA3 vector as negative control. Antibodies used in the assay are indicated in magenta. Panel A shows SALL1 and CBX4 interaction, while panels B–D are negative controls. (E) Quantification of PLA signals per cell as in A–D. Bars represent mean plus SEM of three independent experiments. P-values were calculated using one-way ANOVA test. ***P-value < 0.001.