Increased Tc22 and Treg/CD8 Ratio Contribute to Aggressive Growth of Transplant Associated Squamous Cell Carcinoma
Open Access
- 7 May 2013
- journal article
- research article
- Published by Public Library of Science (PLoS) in PLOS ONE
- Vol. 8 (5), e62154
- https://doi.org/10.1371/journal.pone.0062154
Abstract
Immune suppressed organ transplant recipients suffer increased morbidity and mortality from primary cutaneous SCC. We studied tumor microenvironment in transplant-associated SCC (TSCC), immune-competent SCC and normal skin by IHC, IF and RT-PCR on surgical discard. We determined T cell polarization in TSCC and SCC by intracellular cytokine staining of T cell crawl outs from human skin explants. We studied the effects of IL-22, an inducer of keratinocyte proliferation, on SCC proliferation in vitro. SCC and TSCC are both associated with significantly higher numbers of CD3+ and CD8+ T cells compared to normal skin. TSCC showed a higher proportion of Foxp3+ T regs to CD8+ T cells compared to SCC and a lower percentage of IFN-γ producing CD4+ T cells. TSCC, however, had a higher percentage of IL-22 producing CD8+ T cells compared to SCC. TSCC showed more diffuse Ki67 and IL-22 receptor (IL-22R) expression by IHC. IL-22 induced SCC proliferation in vitro despite serum starvation. Diminished cytotoxic T cell function in TSCC due to decreased CD8/T-reg ratio may permit tumor progression. Increased IL-22 and IL-22R expression could accelerate tumor growth in transplant patients. IL-22 may be an attractive candidate for targeted therapy of SCC without endangering allograft survival.Keywords
This publication has 62 references indexed in Scilit:
- Tumor-infiltrating Lymphocytes, Tumor Characteristics, and Recurrence in Patients With Early Breast CancerAmerican Journal of Clinical Oncology, 2013
- Pro-tumour activity of interleukin-22 in HPAFII human pancreatic cancer cellsClinical and Experimental Immunology, 2012
- Identification and Characterization of Tumor-Initiating Cells in Human Primary Cutaneous Squamous Cell CarcinomaJournal of Investigative Dermatology, 2012
- A Subpopulation of CD163-Positive Macrophages Is Classically Activated in PsoriasisJournal of Investigative Dermatology, 2010
- Ki-67 expression is superior to mitotic count and novel proliferation markers PHH3, MCM4 and mitosin as a prognostic factor in thick cutaneous melanomaBMC Cancer, 2010
- Myeloid Dendritic Cells from Human Cutaneous Squamous Cell Carcinoma Are Poor Stimulators of T-Cell ProliferationJournal of Investigative Dermatology, 2009
- IL-22–producing “T22” T cells account for upregulated IL-22 in atopic dermatitis despite reduced IL-17–producing TH17 T cellsJournal of Allergy and Clinical Immunology, 2009
- Constitutive activation and targeted disruption of signal transducer and activator of transcription 3 (Stat3) in mouse epidermis reveal its critical role in UVB-induced skin carcinogenesisOncogene, 2009
- Aberrant expression of IL-22 receptor 1 and autocrine IL-22 stimulation contribute to tumorigenicity in ALK+ anaplastic large cell lymphomaLeukemia, 2008
- A role for T cell-derived interleukin 22 in psoriatic skin inflammationClinical and Experimental Immunology, 2007