BRINP3 and osteosarcoma: MAP4 interacts with BRINP3 at the protein level, and overexpression of MAP4 can partially reverse the inhibitory effect of downregulated BRINP3 on osteosarcoma cell proliferation and invasion, suggesting that downregulation of BRINP3 may inhibit osteosarcoma cell proliferation and invasion by inhibiting MAP4 expression.