Published online Oct 15, 2022. doi: 10.4251/wjgo.v14.i10.1949
Peer-review started: May 19, 2022
First decision: June 6, 2022
Revised: June 20, 2022
Accepted: September 21, 2022
Article in press: September 21, 2022
Published online: October 15, 2022
Processing time: 147 Days and 20.6 Hours
There are few studies on the expression and role of ELL-associated factor 2 (EAF2) protein in colorectal cancer (CRC). The molecular mechanism of involvement of EAF2 in CRC invasion and metastasis remains unclear.
EAF2 may play a tumor suppressive and protective role in the development of CRC by inhibiting the invasion, metastasis, and angiogenesis of CRC cells.
We assessed the expression and localization of EAF2 protein in CRC specimens. Meanwhile, we cultured CRC cells in vitro to determine the expression of EAF2 protein and further investigate its effects on the biological function of CRC cells.
We used immunohistochemistry and western blot assay to detect the expression of EAF2 protein in CRC tissues from 70 patients. In addition, we applied plasmid transfection technology to study the effects of EAF2 on the invasion, migration, and angiogenesis of CRC cells in vitro.
EAF2 protein was lowly expressed in cancer tissues of patients with advanced CRC. Kaplan-Meier survival analysis showed that the survival rate of the group with high EAF2 level was higher than that of the group with low EAF2 level. In addition, EAF2 affected the biological functions of CRC cells by regulating the STAT3/TGF-β1 crosstalk pathway.
As a tumor suppressor, EAF2 may play a tumor suppressive and protective role in the development of CRC by inhibiting the invasion, metastasis, and angiogenesis of CRC cells via regulating the signal transducer and activator of transcription 3/transforming growth factor beta 1 crosstalk pathway. These findings may provide new diagnostic markers and novel therapeutic targets for CRC.
Our data is beneficial to elucidate the molecular mechanism of CRC invasion and metastasis as well as explore new potential molecular markers and the direction of targeted therapy.
