High expression of PAFAH1B3 results in poor prognosis in lung adenocarcinoma patients and is associated with tumor cell pyroptosis genes

Background Lung adenocarcinoma (LUAD) is a common cancer with a poor prognosis. Platelet-activating factor acetylhydrolase, isoform Ib, gamma subunit 29 kDa ( PAFAH1B3 ) plays an important role in the development of many types of human malignancies. However, the precise role and mechanisms of PAFAH1B3 in LUAD are still unknown.Therefore, we will initially explore the effect of PAFAH1B3 on LUAD in this study. Methods In this study, we first performed a pan-cancer analysis of PAFAH1B3 expression and prognosis using The Cancer Genome Atlas (TCGA), genotype-tissue expression (GTEx) data, and GEPIA database. Next, the relationship between PAFAH1B3 expression and LUAD immune infiltration and pyroptosis-related genes was explored by GEPIA database and TIMER database. The effect of PAFAH1B3 on LUAD was further explored by CCK-8, wound healing, and Transwell assays. Finally, non-coding RNA (ncRNA) that may be involved in the regulation of PAFAH1B3 was explored using Starbase database analysis. Results The results found that PAFAH1B3 may be an oncogene in LUAD and has a significant adverse relationship with tumor immune cell infiltration, immune cell biomarkers and pyroptosis-related gene expression. Meanwhile, cell experiments also found that PAFAH1B3 knockout significantly reduced the proliferation, migration and invasion of A549 cells. Conclusions PAFAH1B3 high expression in LUAD patients is associated with poor prognosis, tumor immune infiltration, and cell pyroptosis gene expression.