The expression levels of LAPTM4B were obviously decreased in both MG‐63 and U‐2 OS cells after the transfection of LAPTM4B‐targeted shRNA plasmids. (A) The results of quantitative PCR assays showed the obviously reduced expression levels of LAPTM4B in its short hairpin RNA (shRNA) plasmid‐transfected MG‐63 and U‐2 OS cells, respectively. (B) Immunoblot assays revealed the efficient decrease of LAPTM4B expression levels after the transfection of its shRNA plasmids in both MG‐63 and U‐2 OS cells. Results are presented as mean ± SD, * P