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circPTP4A2 knockdown suppresses NSCLC progression via regulating proliferation and activating anti-tumor immunity

Chun Wang1, Bin Xu1, Chengzhi Tao1

  • 1Department of Respiratory Medicine, Nanjing Chest Hospital, Affiliated Nanjing Brain Hospital, Nanjing Medical University, 215 Guangzhou Road, Nanjing City, Jiangsu Province, 210029, China.

Journal of Cardiothoracic Surgery
|July 16, 2024
PubMed
Abstract

Insights

Circular RNA PTP4A2 (circPTP4A2) is upregulated in non-small cell lung cancer (NSCLC), acting as a potential diagnostic biomarker. Silencing circPTP4A2 inhibits NSCLC progression and enhances antitumor immunity.

Area of Science:

  • Oncology
  • Molecular Biology
  • Immunology

Background:

  • Non-small cell lung cancer (NSCLC) is a leading cause of cancer mortality worldwide.
  • Circular RNAs (circRNAs) are emerging as significant regulators in various cancers, including NSCLC.
  • The specific role of circPTP4A2 in NSCLC pathogenesis and progression remains largely unexplored.

Purpose of the Study:

  • To investigate the clinical significance of circPTP4A2 as a diagnostic biomarker in NSCLC.
  • To elucidate the functional role of circPTP4A2 in regulating NSCLC cell proliferation, invasion, and immune escape.

Main Methods:

  • Serum and tissue samples from NSCLC patients and healthy controls were analyzed for circPTP4A2 expression using RT-qPCR.
  • NSCLC cell lines were treated to assess circPTP4A2 stability and its effects on cell proliferation and invasion via CCK-8 and Transwell assays.
  • The role of circPTP4A2 in immune escape was evaluated using ELISA and cytotoxicity assays.

Main Results:

  • CircPTP4A2 expression was significantly upregulated in both serum and tissues of NSCLC patients compared to healthy individuals.
  • Elevated circPTP4A2 levels demonstrated potential in differentiating NSCLC patients from healthy controls.
  • Knockdown of circPTP4A2 effectively repressed NSCLC cell proliferation, invasion, and immune escape.

Conclusions:

  • CircPTP4A2 exhibits potential as a valuable diagnostic biomarker for NSCLC.
  • Silencing circPTP4A2 impedes NSCLC progression and bolsters antitumor immunity, suggesting it as a promising therapeutic target for NSCLC treatment and immunotherapy.
Keywords:
DiagnosisHsa_circ_0007364ImmuneNSCLCProgression

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