STING pathway expression identifies NSCLC with an immune-responsive phenotype Journal Article


Authors: Della Corte, C. M.; Sen, T.; Gay, C. M.; Ramkumar, K.; Diao, L.; Cardnell, R. J.; Rodriguez, B. L.; Stewart, C. A.; Papadimitrakopoulou, V. A.; Gibson, L.; Fradette, J. J.; Wang, Q.; Fan, Y.; Peng, D. H.; Negrao, M. V.; Wistuba, I. I.; Fujimoto, J.; Solis Soto, L. M.; Behrens, C.; Skoulidis, F.; Heymach, J. V.; Wang, J.; Gibbons, D. L.; Byers, L. A.
Article Title: STING pathway expression identifies NSCLC with an immune-responsive phenotype
Abstract: Introduction: Although the combination of anti–programmed cell death-1 or anti–programmed cell death ligand-1 (PD-L1) with platinum chemotherapy is a standard of care for NSCLC, clinical responses vary. Even though predictive biomarkers (which include PD-L1 expression, tumor mutational burden, and inflamed immune microenvironment) are validated for immunotherapy, their relevance to chemoimmunotherapy combinations is less clear. We have recently reported that activation of the stimulator of interferon genes (STING) innate immune pathway enhances immunotherapy response in SCLC. Here, we hypothesize that STING pathway activation may predict and underlie predictive correlates of antitumor immunity in NSCLC. Methods: We analyzed transcriptomic and proteomic profiles in two NSCLC cohorts from our institution (treatment-naive patients in the Profiling of Resistance Patterns and Oncogenic Signaling Pathways in Evaluation of Cancers of the Thorax study and relapsed patients in the Biomarker-Integrated Approaches of Targeted Therapy for Lung Cancer Elimination study) and The Cancer Genome Atlas (N = 1320). Tumors were stratified by STING activation on the basis of protein or mRNA expression of cyclic GMP-AMP synthase, phospho-STING, and STING-mediated chemokines (chemokine ligand 5 [CCL5] and C-X-C motif chemokine 10 [CXCL10]). STING activation in patient tumors and in platinum-treated preclinical NSCLC models was correlated with biomarkers of immunotherapy response. Results: STING activation is associated with higher levels of intrinsic DNA damage, targetable immune checkpoints, and chemokines in treatment-naive and relapsed lung adenocarcinoma. We observed that tumors with lower STING and immune gene expression show higher frequency of serine-threonine kinase 11 (STK11) mutations; however, we identified a subset of these tumors that are TP53 comutated and display high immune- and STING-related gene expression. Treatment with cisplatin increases STING pathway activation and PD-L1 expression in multiple NSCLC preclinical models, including adeno- and squamous cell carcinoma. Conclusions: STING pathway activation in NSCLC predicts features of immunotherapy response and is enhanced by cisplatin treatment. This suggests a possible predictive biomarker and mechanism for improved response to chemoimmunotherapy combinations. © 2020 International Association for the Study of Lung Cancer
Keywords: signal transduction; controlled study; protein expression; gene mutation; cancer recurrence; squamous cell carcinoma; cisplatin; nonhuman; biological marker; phenotype; dna damage; cancer immunotherapy; gene expression; animal experiment; animal model; cohort analysis; lung cancer; in vivo study; in vitro study; protein p53; oncogene; lung adenocarcinoma; dna; immune response; immunotherapy; messenger rna; tumor immunity; innate immunity; gamma interferon inducible protein 10; programmed death 1 ligand 1; non small cell lung cancer; protein kinase lkb1; rantes; immune checkpoints; human; priority journal; article; stk11 gene; sting
Journal Title: Journal of Thoracic Oncology
Volume: 15
Issue: 5
ISSN: 1556-0864
Publisher: Elsevier Inc.  
Date Published: 2020-05-01
Start Page: 777
End Page: 791
Language: English
DOI: 10.1016/j.jtho.2020.01.009
PUBMED: 32068166
PROVIDER: scopus
PMCID: PMC7202130
DOI/URL:
Notes: Article -- Export Date: 1 June 2020 -- Source: Scopus
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  1. Triparna Sen
    6 Sen