<i>STUB1</i> (CHIP) – a prognostic marker in cancer

<i>STUB1</i>, also known as CHIP (C-terminus of Hsc70-Interacting Protein), plays a vital role in cellular protein homeostasis through its E3 ubiquitin ligase activity. Recent evidence suggests that <i>STUB1</i> (CHIP) is implicated in various cancer types, influencing tumorigenesis by regulating the degradation of oncogenic and tumor suppressor proteins, <i>viz.</i>, c-Myc, PTEN, p53 <i>etc.</i> This study investigates the prognostic value of <i>STUB1</i> across multiple cancers through a comprehensive pan-cancer analysis utilizing large public databases, including The Cancer Genome Atlas (TCGA) and the Gene Expression Omnibus (GEO) and further validation of results in multiple cancer cell lines. Our analysis reveals distinct expression patterns of <i>STUB1</i> (CHIP) across different cancer types and highlights its correlation with clinical outcomes. In certain cancers, high <i>STUB1</i> (CHIP) expression is associated with worse prognosis, likely due to its role in degrading tumor suppressor proteins. Conversely, in other cancer types, low <i>STUB1</i> (CHIP) expression correlates with poor survival, possibly due to impaired degradation of oncogenic factors. The study provides crucial insights into the dual roles of <i>STUB1</i> (CHIP) in several cancer types, establishing it as a potential prognostic marker. Our investigation into the contextual role of <i>STUB1</i> (CHIP) within human tissue samples, employing immunoblotting and complementary assays, highlights its potential as a therapeutic target for restoring protein homeostasis and modulating cancer progression. Nonetheless, further research is necessary to comprehensively elucidate the mechanisms by which <i>STUB1</i> (CHIP) regulates tumorigenesis across various cancer types.