Background: Hyaluronan Mediated Motility Receptor (HMMR), as one of the key surface binding proteins of HA, is up-regulated in many tumors. What’s more, the expression level of HMMR is usually correlate with tumor progression and prognosis. However, the relationship between the expression of HMMR and the prognosis and immune infiltration of hepatocellular carcinoma (HCC) is still unclear.
Methods: We analyzed the expression level of HMMR by TIMER database, GEO database and GEPIA database. The correlation between the HMMR expression and tumor prognosis was analyzed via the Kaplan-Meier plots. The TIMER database and GEPIA database were used to study the relationship between HMMR expression and immune infiltration. GO and KEGG enrichment analysis were used to explore the potential biological functions of HMMR.
Results: HMMR expression was significantly higher in several human cancers, including HCC, than in corresponding normal tissues. High HMMR expression associated with poorer overall survival, disease-specific survival, progression-free survival and relapse-free survival in HCC patients. HMMR showed strong correlation with tumor-infiltrating B cells, CD4 + and CD8 + T cells, macrophages, neutrophils, and dendritic cells. Several immune marker genes expression, including CD86, IRF5, CD11b, KIRIDL4, CD11c, IFN-γ, STAT3, STAT5B, and CTLA4, have markedly positive correlations with HMMR expression. Enrichment analysis found that HMMR is mainly involved in cell cycle, DNA replication and repair, PLK1 pathway, E2F pathway, ATR pathway and AURORA B pathway.
Conclusions: HMMR is a potential prognostic biomarker that influence tumor progression and correlated with tumor immune cells infiltration in HCC.