Cited by 40Lung Cancer Treatments and MutationsHER2/EGFR in Cancer ResearchLung Cancer Diagnosis and Treatment

EGFR-targeted therapy results in dramatic early lung tumor regression accompanied by imaging response and immune infiltration in EGFR mutant transgenic mouse models

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Venugopalan, Abhilash, Lee, Min-Jung, Niu, Gang, Medina-Echeverz, José, Tomita, Yusuke, Lizak, Martin J., Cultraro, Constance M., Simpson, Robert Mark +3 more·2016·Oncotarget

Abstract

// Abhilash Venugopalan 1 , Min-Jung Lee 2 , Gang Niu 3 , José Medina-Echeverz 1 , Yusuke Tomita 2 , Martin J. Lizak 4 , Constance M. Cultraro 1 , Robert Mark Simpson 5 , Xiaoyuan Chen 3 , Jane B. Trepel 2 and Udayan Guha 1 1 Thoracic and Gastrointestinal Oncology Branch, National Cancer Institute, Bethesda, MD, USA 2 Developmental Therapeutics Branch, National Cancer Institute, Bethesda, MD, USA 3 Laboratory of Molecular Imaging and Nanomedicine, National Institute of Biomedical Imaging and Bioengineering, Bethesda, MD, USA 4 Mouse Imaging Facility, National Institute of Neurological Disorder and Stroke, National Institutes of Health, Bethesda, MD, USA 5 Laboratory of Cancer Biology and Genetics, National Cancer Institute, Bethesda, MD, USA Correspondence to: Udayan Guha, email: // Keywords : lung cancer, EGFR, TKI, imaging, immune-infiltration Received : May 23, 2016 Accepted : July 22, 2016 Published : August 02, 2016 Abstract Lung adenocarcinoma patients harboring kinase domain mutations in Epidermal growth factor receptor (EGFR) have significant clinical benefit from EGFR-targeted tyrosine kinase inhibitors (TKIs). Although a majority of patients experience clinical symptomatic benefit immediately, an objective response can only be demonstrated after 6-8 weeks of treatment. Evaluation of patient response by imaging shows that 30-40% of patients do not respond due to intrinsic resistance to these TKIs. We investigated immediate-early effects of EGFR-TKI treatment in mutant EGFR-driven transgenic mouse models by FDG-PET and MRI and correlated the effects on the tumor and the tumor microenvironment. Within 24 hours of erlotinib treatment we saw approximately 65% tumor regression in mice with TKI-sensitive EGFR L858R lung adenocarcinoma. However, mice with EGFR L858R/T790M -driven tumors did not respond to either erlotinib or afatinib monotherapy, but did show a significant tumor response to afatinib-cetuximab combination treatment. The imaging responses correlated with the inhibition of downstream EGFR signaling, increased apoptosis, and decreased proliferation in the tumor tissues. In EGFR L858R -driven tumors, we saw a significant increase in CD45 + leukocytes, NK cells, dendritic cells, macrophages and lymphocytes, particularly CD8 + T cells. In response to erlotinib, these dendritic cells and macrophages had significantly higher MHC class II expression, indicating increased antigen-presenting capabilities. Together, results of our study provide novel insight into the immediate-early therapeutic response to EGFR TKIs in vivo .

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  • Erlotinib upregulates MHC class II in DCs and macrophages, improving antigen presentation by immune cells.

    “MHC class II upregulation by DCs and macrophages”

    From Immunomodulation by targeted anticancer agents (2021) · cites this paper as Venugopalan et al., 2016

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Authors
Venugopalan, A., Lee, M.-J., Niu, G., Medina-Echeverz, J., Tomita, Y., Lizak, M. J., Cultraro, C. M., Simpson, R. M., Chen, X., Trepel, J. B., & Guha, U.
Affiliations
  • National Institutes of Health (US)
  • National Institute of Biomedical Imaging and Bioengineering (US)
  • Thoracic and Gastrointestinal Oncology Branch, National Cancer Institute, Bethesda, MD, USA
  • National Cancer Institute (US)
Corresponding author
Guha, Udayan
Venue
Oncotarget
Published
2016-08-02
Volume
7
Issue
34
Pages
54137-54156
ISSN
1949-2553 (ISSN-L)
OpenAlex
W2479511981
Cited by
40
References
52
Citations by year
2026: 1 · 2025: 3 · 2024: 1 · 2023: 12 · 2022: 6 · 2021: 7 · 2020: 3 · 2019: 3 · 2018: 2 · 2017: 2
FWCI
2.09
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Oncotarget (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • Lung Cancer Research Foundation
  • Memorial Sloan-Kettering Cancer Center
  • Frederick National Laboratory for Cancer Research
  • National Institutes of Health
  • National Cancer Institute
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Lung Cancer Treatments and Mutations
  • Health Sciences › Medicine › Oncology › HER2/EGFR in Cancer Research
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Lung Cancer Diagnosis and Treatment
Keywords
anti-EGFR therapy, tyrosine kinase inhibitors, lung adenocarcinoma, L858R mutation, T790M mutation, erlotinib, afatinib, cetuximab, combination therapy, tumor microenvironment, immune cell infiltration, FDG-PET imaging, magnetic resonance imaging, transgenic mouse model
MeSH terms
Cetuximab, Erlotinib Hydrochloride, Adenocarcinoma of Lung, Adenocarcinoma, Animals, Humans, Lung Neoplasms, Mutation, Apoptosis, Xenograft Model Antitumor Assays, Protein Kinase Inhibitors, Positron-Emission Tomography, Mice, ErbB Receptors

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