STAT1-associated intratumoural T(H)1 immunity predicts chemotherapy resistance in high-grade serous ovarian cancer

被引：49

作者：

Au, Katrina K. ^{[1
]}

Le Page, Cecile ^{[2
,3
]}

Ren, Runhan ^{[1
]}

Meunier, Liliane ^{[2
,3
]}

Clement, Isabelle ^{[2
,3
]}

Tyrishkin, Kathrin ^{[4
]}

Peterson, Nichole ^{[5
]}

Kendall-Dupont, Jennifer ^{[2
,3
]}

Childs, Timothy ^{[4
]}

Francis, Julie-Ann ^{[5
]}

Graham, Charles H. ^{[1
]}

Craig, Andrew W. ^{[1
,6
]}

Squire, Jeremy A. ^{[7
,8
]}

Mes-Masson, Anne-Marie ^{[2
,3
,9
]}

Koti, Madhuri ^{[1
,5
,6
]}

机构：

[1] Queens Univ, Dept Biomed & Mol Sci, Kingston, ON K7L 3N6, Canada

[2] CRCHUM, Montreal, PQ H2X 0A9, Canada

[3] Inst Canc Montreal, Montreal, PQ H2X 0A9, Canada

[4] Kingston Gen Hosp, Dept Pathol & Mol Med, Kingston, ON K7L 3N6, Canada

[5] Kingston Gen Hosp, Dept Obstet & Gynecol, Kingston, ON K7L 3N6, Canada

[6] Queens Univ, Queens Canc Res Inst, Canc Biol & Genet Div, Kingston, ON K7L 3N6, Canada

[7] Univ Sao Paulo, Fac Med Ribeirao Preto, Dept Genet, Av Bandeirantes, BR-3900 Ribeirao Preto, SP, Brazil

[8] Univ Sao Paulo, Fac Med Ribeirao Preto, Dept Pathol, Av Bandeirantes, BR-3900 Ribeirao Preto, SP, Brazil

[9] Univ Montreal, Dept Med, Montreal, PQ H3C 3J7, Canada

来源：

JOURNAL OF PATHOLOGY CLINICAL RESEARCH | 2016年 / 2卷 / 04期

关键词：

interferon; intratumoural CD8(+) T cell; ovarian cancer; chemoresistance; STAT1;

D O I：

10.1002/cjp2.55

中图分类号：

R36 [病理学];

学科分类号：

100104 ;

摘要：

High-grade serous ovarian carcinoma (HGSC) accounts for 70% of all epithelial ovarian cancers but clinical management is challenged by a lack of accurate prognostic and predictive biomarkers of chemotherapy response. This study evaluated the role of Signal Transducer and Activator of Transcription 1 (STAT1) as an independent prognostic and predictive biomarker and its correlation with intratumoural CD8(+) T cells in a second independent biomarker validation study. Tumour STAT1 expression and intratumoural CD8(+) T cell infiltration were assessed by immunohistochemistry as a multicentre validation study conducted on 734 chemotherapy-naive HGSCs. NanoString-based profiling was performed to correlate expression of STAT1 target genes CXCL9, CXCL10 and CXCL11 with CD8A transcript expression in 143 primary tumours. Multiplexed cytokine analysis of pre-treatment plasma from resistant and sensitive patients was performed to assess systemic levels of STAT1-induced cytokines. STAT1 was validated as a prognostic and predictive biomarker in both univariate and multivariate models and its expression correlated significantly with intra-epithelial CD8(+.) T cell infiltration in HGSC. STAT1 levels increased the prognostic and predictive value of intratumoural CD8(+) T cells, confirming their synergistic role as biomarkers in HGSC. In addition, expression of STAT1 target genes (CXCL9, CXCL10 and CXCL11) correlated significantly with levels of, and CD8A transcripts from intratumoural CD8(+) T cells within the resistant and sensitive tumours. Our findings provide compelling evidence that high levels of STAT1, STAT1-induced chemokines and CD8(+) T cells correlate with improved chemotherapy response in HGSC. These results identify STAT1 and its target genes as novel biomarkers of chemosensitivity in HGSC. These findings provide new translational opportunities for patient stratification for immunotherapies based on emerging biomarkers of inflammation in HGSC. An improved understanding of the role of interferon-inducible genes will be foundational for developing immunomodulatory therapies in ovarian cancer.

引用

页码：259 / 270

页数：12

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