Cited by 1,539Cancer Immunotherapy and BiomarkersImmunotherapy and Immune ResponsesT-cell and B-cell Immunology

Loss of PTEN Promotes Resistance to T Cell–Mediated Immunotherapy

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Peng, Weiyi, Chen, Jie Qing, Liu, Chengwen, Malu, Shruti, Creasy, Caitlin, Tetzlaff, Michael T., Xu, Chunyu, McKenzie, Jodi A. +36 more·2016·Cancer Discovery

Published version of a preprint

Abstract

T cell–mediated immunotherapies are promising cancer treatments. However, most patients still fail to respond to these therapies. The molecular determinants of immune resistance are poorly understood. We show that loss of PTEN in tumor cells in preclinical models of melanoma inhibits T cell–mediated tumor killing and decreases T-cell trafficking into tumors. In patients, PTEN loss correlates with decreased T-cell infiltration at tumor sites, reduced likelihood of successful T-cell expansion from resected tumors, and inferior outcomes with PD-1 inhibitor therapy. PTEN loss in tumor cells increased the expression of immunosuppressive cytokines, resulting in decreased T-cell infiltration in tumors, and inhibited autophagy, which decreased T cell–mediated cell death. Treatment with a selective PI3Kβ inhibitor improved the efficacy of both anti–PD-1 and anti–CTLA-4 antibodies in murine models. Together, these findings demonstrate that PTEN loss promotes immune resistance and support the rationale to explore combinations of immunotherapies and PI3K–AKT pathway inhibitors. Significance: This study adds to the growing evidence that oncogenic pathways in tumors can promote resistance to the antitumor immune response. As PTEN loss and PI3K–AKT pathway activation occur in multiple tumor types, the results support the rationale to further evaluate combinatorial strategies targeting the PI3K–AKT pathway to increase the efficacy of immunotherapy. Cancer Discov; 6(2); 202–16. ©2015 AACR. See related commentary by Rizvi and Chan, p. 128. This article is highlighted in the In This Issue feature, p. 109

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Crossref · 10.1158/2159-8290.cd-15-0283

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  • Tumor-intrinsic activation of the Wnt/β-catenin pathway and deletion or mutation of Pten lead to deficient T cell infiltration into the tumor microenvironment and resistance to checkpoint blockade immunotherapy.

    “Tumor-intrinsic activation of the Wnt/β-catenin pathway (15) and deletion or mutation of Pten (16) have been shown to lead to deficient T cell infiltration into the tumor microenvironment and resistance to checkpoint blockade immunotherapy.”
  • Inhibition of the PI3K/AKT/mTOR pathway improves the efficacy of anti-PD-1 and anti-CTLA-4 antibodies in mouse models.

    “Inhibition of the PI3K/AKT/mTOR pathway improves the efficacy of anti-PD-1 and anti-CTLA-4 antibodies in mouse models [226,230,231].”
  • Combinatorial biomarker strategies that capture host and tumor-immune ecosystem features are essential.

    “Combinatorial biomarker strategies that capture attributes of the host and tumor-immune ecosystem will be essential (Fig. 2; refs.121-124).”

    From The Next Decade of Immune Checkpoint Therapy (2021) · cites this paper as [124]

  • PTEN loss is associated with increased PI3K-AKT signaling and correlates with CD8 T-cell exclusion and poor clinical responses to immune checkpoint therapy.

    “In addition, PTEN loss is also associated with increased signaling through the PI3K-AKT pathway and correlated with exclusion of CD8 T cells and poor clinical responses to ICT (124).”

    From The Next Decade of Immune Checkpoint Therapy (2021) · cites this paper as [124]

  • PTEN competence is associated with a higher incidence of PD-L1+ cases in melanoma patients.

    “PTEN competence is associated with an increased incidence of PD-L1 cases in melanoma patients (Peng et al., 2016)”

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

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Authors
Peng, W., Chen, J. Q., Liu, C., Malu, S., Creasy, C., Tetzlaff, M. T., Xu, C., McKenzie, J. A., Zhang, C., Liang, X., Williams, L. J., Deng, W., Chen, G., Mbofung, R., Lazar, A. J., Torres-Cabala, C. A., Cooper, Z. A., Chen, P.-L., Tieu, T. N., Spranger, S., Yu, X., Bernatchez, C., Forget, M.-A., Haymaker, C., Amaria, R., McQuade, J. L., Glitza, I. C., Cascone, T., Li, H. S., Kwong, L. N., Heffernan, T. P., Hu, J., Bassett, R. L., Bosenberg, M. W., Woodman, S. E., Overwijk, W. W., Lizée, G., Roszik, J., Gajewski, T. F., Wargo, J. A., Gershenwald, J. E., Radvanyi, L., Davies, M. A., & Hwu, P.
Affiliations
  • The University of Texas MD Anderson Cancer Center (US)
  • University of Chicago (US)
  • 1Department of Melanoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas.
  • Yale University (US)
Corresponding author
Hwu, Patrick
Venue
Cancer Discovery
Published
2016-02-01
Volume
6
Issue
2
Pages
202-216
ISSN
  • 2159-8274 (ISSN-L)
  • 2159-8290
OpenAlex
W2201379305
Cited by
1,539
References
54
Citations by year
2026: 88 · 2025: 134 · 2024: 131 · 2023: 157 · 2022: 176 · 2021: 204 · 2020: 209 · 2019: 150 · 2018: 124 · 2017: 110 · 2016: 53 · 2015: 1
FWCI
41.93
Type
journal article
Language
en
Open access
Locations
  • Cancer Discovery (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (UL1TR000371)
  • National Cancer Institute (K99CA204595, U54CA163125, T32CA009666, R00CA204595, P01CA128913, R01CA154710, K08CA160692, R01CA116206, P30CA016672, P30CA016359, P50CA093459, R01CA187076)
  • National Center for Advancing Translational Sciences
Topics
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
Keywords
PTEN loss, melanoma, PD-1 inhibitors, CTLA-4, T cell infiltration, PI3K/Akt signaling, autophagy, immunosuppressive cytokines, tumor immune microenvironment, combination immunotherapy
MeSH terms
Aminopyridines, Animals, Antibodies, Drug Synergism, Humans, Immunotherapy, Melanoma, Morpholines, T-Lymphocytes, Drug Resistance, Neoplasm, Cell Line, Tumor, PTEN Phosphohydrolase, Mice, CTLA-4 Antigen, Programmed Cell Death 1 Receptor

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