Journal
CANCERS
Volume 13, Issue 24, Pages -Publisher
MDPI
DOI: 10.3390/cancers13246228
Keywords
STAT3; lung cancer; NSCLC; drug resistance; tumor microenvironment; chemotherapy; immunotherapy; tyrosine kinase inhibitors; clinical trials
Categories
Funding
- NHMRC [GNT1166447]
- NHMRC
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Persistent activation of STAT3 in non-small cell lung cancer is associated with poor prognosis, making it a potential therapeutic target. Understanding the molecular and immunological mechanisms of STAT3 activation can provide insights into its role in NSCLC development, serving as prognostic and predictive biomarker. Current STAT3-targeting therapies in clinical trials face challenges in clinical settings.
Simple Summary Persistent activation of STAT3 is frequently observed in non-small cell lung cancer and is associated with a poor prognosis. Given the multifaceted role of STAT3 signaling in NSCLC tumor development and progression, this pathway represents a promising therapeutic target for anti-cancer therapy. In this review, we discuss the molecular and immunological mechanisms by which persistent STAT3 activation promotes NSCLC development, and the utility of STAT3 as a prognostic and predictive biomarker. We also provide an update of STAT3-targeting therapies that are currently undergoing Phase I/II clinical trials, and discuss the challenges associated with these treatment modalities in the clinic. Non-small cell lung cancer (NSCLC) is the most common type of lung cancer and accounts for 85% of lung cancer cases. Aberrant activation of the Signal Transducer and Activator of Transcription 3 (STAT3) is frequently observed in NSCLC and is associated with a poor prognosis. Pre-clinical studies have revealed an unequivocal role for tumor cell-intrinsic and extrinsic STAT3 signaling in NSCLC by promoting angiogenesis, cell survival, cancer cell stemness, drug resistance, and evasion of anti-tumor immunity. Several STAT3-targeting strategies have also been investigated in pre-clinical models, and include preventing upstream receptor/ligand interactions, promoting the degradation of STAT3 mRNA, and interfering with STAT3 DNA binding. In this review, we discuss the molecular and immunological mechanisms by which persistent STAT3 activation promotes NSCLC development, and the utility of STAT3 as a prognostic and predictive biomarker in NSCLC. We also provide a comprehensive update of STAT3-targeting therapies that are currently undergoing clinical evaluation, and discuss the challenges associated with these treatment modalities in human patients.
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