Abstract: The present invention relates to a peptide suppressing the phosphorylation of threonine(T120), the 120th residue of TSPYL5 (testis-specific Y-like protein 5), which is specifically as follows. The present inventors constructed T120D, the mutant of the 120th residue threonine(T120) of TSPYL5, and T120A-TSPYL5 gene and then transfected cells with them in order to investigate the effect of phosphorylation on T120 residue. As a result, wild-type TSPYL5 and T120D moved into nucleus and stayed there. But in the case of T120A-TSPYL5, TSPYL5 did not move into nucleus and instead it was expressed only in cytoplasm. The protein could not bind to AKT, either. Instead, ubiquitination of TSPYL5 was increased but SUMOylation was inhibited. Also, the expressions of ALDH1-A1, -A3, CD44 gene and protein were reduced, and thereby the growth and metastasis of lung cancer cells were suppressed and sphere formation was reduced.

Abstract: The present invention relates to a peptide suppressing the phosphorylation of threonine (T120), the 120th residue of TSPYL5 (testis-specific Y-like protein 5), which is specifically as follows. The present inventors constructed T120D, the mutant of the 120th residue threonine (T120) of TSPYL5, and T120A-TSPYL5 gene and then transfected cells with them in order to investigate the effect of phosphorylation on T120 residue. As a result, wild-type TSPYL5 and T120D moved into nucleus and stayed there. But in the case of T120A-TSPYL5, TSPYL5 did not move into nucleus and instead it was expressed only in cytoplasm. The protein could not bind to AKT, either. Instead, ubiquitination of TSPYL5 was increased but SUMOylation was inhibited. Also, the expressions of ALDH1-A1, -A3, CD44 gene and protein were reduced, and thereby the growth and metastasis of lung cancer cells were suppressed and sphere formation was reduced.

Abstract: The present invention relates to a pharmaceutical composition or an anticancer agent for preventing and treating non-small cell lung cancer, containing a substance for regulating the expression or activity of transmembrane 4 L six family member 4 (TM4SF4). More specifically, the present invention relates to a use of a substance for regulating the expression or activity of TM4SF4 as an anticancer drug or an anticancer agent with respect to non-small cell lung cancer, wherein it was ascertained that it is possible to decrease the growth, metastasis, and infiltration of adenocarcinoma cells and radioresistance by decreasing the expression of TM4SF4 in adenocarcinoma among non-small cell lung cancers and to decrease the growth, metastasis, and infiltration of the cells and radioresistance by increasing the expression of TM4SF4 in other non-small cell lung cancers except adenocarcinoma.

Abstract: The present invention relates to a pharmaceutical composition or an anticancer agent for preventing and treating non-small cell lung cancer, containing a substance for regulating the expression or activity of transmembrane 4 L six family member 4 (TM4SF4). More specifically, the present invention relates to a use of a substance for regulating the expression or activity of TM4SF4 as an anticancer drug or an anticancer agent with respect to non-small cell lung cancer, wherein it was ascertained that it is possible to decrease the growth, metastasis, and infiltration of adenocarcinoma cells and radioresistance by decreasing the expression of TM4SF4 in adenocarcinoma among non-small cell lung cancers and to decrease the growth, metastasis, and infiltration of the cells and radioresistance by increasing the expression of TM4SF4 in other non-small cell lung cancers except adenocarcinoma.