AI Article Synopsis

  • Non-small cell lung cancer (NSCLC) is a major cause of cancer-related deaths, but its progression mechanisms are still not completely understood.
  • A study involving 347 NSCLC patients found that high levels of STYK1 and low levels of SPINT2 are linked to worse patient outcomes, tumor growth, and spread.
  • STYK1 promotes cancer cell activity by decreasing SPINT2 levels, suggesting that targeting both proteins could be a promising new treatment approach for NSCLC.

Article Abstract

Non-small cell lung cancer (NSCLC) is the leading cause of cancer deaths worldwide. However, the molecular mechanisms underlying NSCLC progression remains not fully understood. In this study, 347 patients with complete clinicopathologic characteristics who underwent NSCLC surgery were recruited for the investigation. We verified that elevated serine threonine tyrosine kinase 1 (STYK1) or decreased serine peptidase inhibitor Kunitz type 2 (SPINT2/HAI-2) expression significantly correlated with poor prognosis, tumor invasion, and metastasis of NSCLC patients. STYK1 overexpression promoted NSCLC cells proliferation, migration, and invasion. STYK1 also induced epithelial-mesenchymal transition by E-cadherin downregulation and Snail upregulation. Moreover, RNA-seq, quantitative polymerase chain reaction (qRT-PCR), and western blot analyses confirmed that STYK1 overexpression significantly decreased the SPINT2 level in NSCLC cells, and SPINT2 overexpression obviously reversed STYK1-mediated NSCLC progression both in vitro and in vivo. Further survival analyses showed that NSCLC patients with high STYK1 level and low SPINT2 level had the worst prognosis and survival. These results indicated that STYK1 facilitated NSCLC progression via reducing SPINT2 expression. Therefore, targeting STYK1 and SPINT2 may be a novel therapeutic strategy for NSCLC.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6547759PMC
http://dx.doi.org/10.1038/s41419-019-1659-1DOI Listing

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