Open Access

Nuclear IGF1R interacts with NuMA and regulates 53BP1‑dependent DNA double‑strand break repair in colorectal cancer

  • Authors:
    • Chen Yang
    • Yifan Zhang
    • Nelly Segar
    • Changhao Huang
    • Pengwei Zeng
    • Xiangzhou Tan
    • Linfeng Mao
    • Zhikang Chen
    • Felix Haglund
    • Olle Larsson
    • Zihua Chen
    • Yingbo Lin
  • View Affiliations

  • Published online on: June 22, 2021     https://doi.org/10.3892/or.2021.8119
  • Article Number: 168
  • Copyright: © Yang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

Metrics: Total Views: 0 (Spandidos Publications: | PMC Statistics: )
Total PDF Downloads: 0 (Spandidos Publications: | PMC Statistics: )


Abstract

Nuclear insulin‑like growth factor 1 receptor (nIGF1R) has been associated with poor overall survival and chemotherapy resistance in various types of cancer; however, the underlying mechanism remains unclear. In the present study, immunoprecipitation‑coupled mass spectrometry was performed in an IGF1R‑overexpressing SW480‑OE colorectal cancer cell line to identify the nIGF1R interactome. Network analysis revealed 197 proteins of interest which were involved in several biological pathways, including RNA processing, DNA double‑strand break (DSB) repair and SUMOylation pathways. Nuclear mitotic apparatus protein (NuMA) was identified as one of nIGF1R's colocalizing partners. Proximity ligation assay (PLA) revealed different levels of p53‑binding protein 1 (53BP1)‑NuMA colocalization between IGF1R‑positive (R+) and IGF1R‑negative (R) mouse embryonic fibroblasts following exposure to ionizing radiation (IR). 53BP1 was retained by NuMA in the R cells during IR‑induced DNA damage. By contrast, the level of NuMA‑53BP1 was markedly lower in R+ cells compared with R cells. The present data suggested a regulatory role of nIGF1R in 53BP1‑dependent DSB repair through its interaction with NuMA. Bright‑field PLA analysis on a paraffin‑embedded tissue microarray from patients with colorectal cancer revealed a significant association between increased nuclear colocalizing signals of NuMA‑53BP1 and a shorter overall survival. These results indicate that nIGF1R plays a role in facilitating 53BP1‑dependent DDR by regulating the NuMA‑53BP1 interaction, which in turn might affect the clinical outcome of patients with colorectal cancer.
View Figures
View References

Related Articles

Journal Cover

August-2021
Volume 46 Issue 2

Print ISSN: 1021-335X
Online ISSN:1791-2431

Sign up for eToc alerts

Recommend to Library

Copy and paste a formatted citation
x
Spandidos Publications style
Yang C, Zhang Y, Segar N, Huang C, Zeng P, Tan X, Mao L, Chen Z, Haglund F, Larsson O, Larsson O, et al: Nuclear IGF1R interacts with NuMA and regulates 53BP1‑dependent DNA double‑strand break repair in colorectal cancer. Oncol Rep 46: 168, 2021
APA
Yang, C., Zhang, Y., Segar, N., Huang, C., Zeng, P., Tan, X. ... Lin, Y. (2021). Nuclear IGF1R interacts with NuMA and regulates 53BP1‑dependent DNA double‑strand break repair in colorectal cancer. Oncology Reports, 46, 168. https://doi.org/10.3892/or.2021.8119
MLA
Yang, C., Zhang, Y., Segar, N., Huang, C., Zeng, P., Tan, X., Mao, L., Chen, Z., Haglund, F., Larsson, O., Chen, Z., Lin, Y."Nuclear IGF1R interacts with NuMA and regulates 53BP1‑dependent DNA double‑strand break repair in colorectal cancer". Oncology Reports 46.2 (2021): 168.
Chicago
Yang, C., Zhang, Y., Segar, N., Huang, C., Zeng, P., Tan, X., Mao, L., Chen, Z., Haglund, F., Larsson, O., Chen, Z., Lin, Y."Nuclear IGF1R interacts with NuMA and regulates 53BP1‑dependent DNA double‑strand break repair in colorectal cancer". Oncology Reports 46, no. 2 (2021): 168. https://doi.org/10.3892/or.2021.8119