A novel long noncoding RNA (lncRNA), LINC02657(LASTR), is a prognostic biomarker associated with immune infiltrates of lung adenocarcinoma based on unsupervised cluster analysis

PeerJ. 2023 Nov 28:11:e16167. doi: 10.7717/peerj.16167. eCollection 2023.

Abstract

Non-small cell lung cancer (NSCLC) has long been the deadliest malignancy worldwide, with adenocarcinoma (AD) being the most common pathological subtype. Here we focused on the value of LASTR in LUAD. Using expression analysis, enrichment analysis, immune cell infraction analysis, we found that the expression level of LASTR was significantly increased in LUAD tissue. Meanwhile, LASTR was significantly associated with differential infiltration of various immune cells. Kaplan-Meier survival analysis showed that LUAD related with a poor prognosis in terms of OS, PFI, and DSS compared with high-expression LASTR. The enrichment analysis showed that LASTR is related to the pathays like PI3K-AKT signaling pathway. Thus, the present findings could be helpful in a better understand of LASTR in LUAD. RT-PCR was used to verify the high expression of LASTR in LUAD tissues, and the apoptosis of LUAD cell lines was promoted by CCK8 and Transwell experiments to verify the ability of LASTR to promote the migration and invasion of lung cancer cells in vitro.

Keywords: Bioinformatics; LASTR; LUAD; Onclogy.

MeSH terms

  • Adenocarcinoma* / genetics
  • Biomarkers
  • Carcinoma, Non-Small-Cell Lung*
  • Cluster Analysis
  • Humans
  • Lung Neoplasms* / genetics
  • Phosphatidylinositol 3-Kinases
  • Prognosis
  • RNA, Long Noncoding* / genetics

Substances

  • RNA, Long Noncoding
  • Phosphatidylinositol 3-Kinases
  • Biomarkers

Grants and funding

The authors received no funding for this work.