Mex3d-flox Mouse

MEX3D, a member of the MEX3 (muscle excess 3) family, is an RNA-binding protein. It is involved in post-transcriptional regulation of biological processes, potentially participating in various pathways relevant to diseases [3].

In prostate cancer, MEX3D is highly upregulated by loss of PTEN and/or expression of the TMPRSS2/ERG fusion gene. It drives phenotypes such as soft-agar colony formation, invasion, and tumor formation in vivo, with TCF3 as a major target [1].

In cervical carcinoma, MEX3D is upregulated by HPV16 E7. Knocking down its expression reduces cell proliferation, inhibits colony formation, promotes apoptosis, and reduces tumor growth in mouse xenograft models. MEX3D acts as an RBP to destabilize TSC22D1 mRNA [2].

In non-small-cell lung cancer (NSCLC), overexpression of MEX3D is associated with significantly worse overall survival in patients with LUAD and LUSC, and is correlated with immune cell infiltration [3].

In conclusion, MEX3D is an important RNA-binding protein involved in post-transcriptional regulation. Its dysregulation contributes to the development of prostate cancer, cervical carcinoma, and NSCLC. Functional studies, especially those using in vivo models, have revealed its oncogenic roles in these cancer types, providing potential targets for therapeutic intervention.