Indoleamine 2,3-dioxygenase expression predicts impaired survival of invasive cervical cancer patients treated with radical hysterectomy

被引:57
作者
Inaba, Tomoko
Ino, Kazuhiko [1 ]
Kajiyamaa, Hiroaki
Shibata, Kiyosumi
Yamamoto, Eiko
Kondo, Shinji
Umezu, Tomokazu
Nawa, Akihiro
Takikawa, Osamu [2 ]
Kikkawa, Fumitaka
机构
[1] Nagoya Univ, Dept Obstet & Gynecol, Grad Sch Med, Showa Ku, Nagoya, Aichi 4668550, Japan
[2] Natl Ctr Geriatr & Gerontol, Natl Inst Longev Sci, Obu, Japan
关键词
Cervical cancer; Immunohistochemistry; Indoleamine 2,3-dioxygenase; Prognostic factor; Survival; HISTOPATHOLOGIC PROGNOSTIC-FACTORS; TUMOR-INFILTRATING LYMPHOCYTES; PLASMACYTOID DENDRITIC CELLS; REGULATORY T-CELLS; TRYPTOPHAN DEGRADATION; MULTIVARIATE-ANALYSIS; CARCINOMA-CELLS; HLA-EXPRESSION; ASSOCIATION; PROLIFERATION;
D O I
10.1016/j.ygyno.2010.02.028
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Objective. Indoleamine 2,3-dioxygenase (IOU) is a tryptophan-catabolizing enzyme that induces tolerance to host immune surveillance within the tumor microenvironment. The present study aimed to investigate IDO expression and its prognostic significance in invasive cervical cancer. Methods. Immunohistochemical expression of IDO in tumor tissues and its association with clinicopathological factors and survival were analyzed in 112 stage IB-IIB cervical cancer patients treated with radical hysterectomy and pelvic lymphadenectomy. Results. IDO was diffusely expressed in tumor cells in 29 (26%) cases and focally expressed at the invasive front in 29 (26%) cases, while the other 54 (48%) cases were IOU-negative. IDO expression was positively correlated with clinical stage, lymph node metastasis, and lymph-vascular space invasion, but not with histological type. Patients with diffuse IDO expression had significantly reduced overall survival (OS) and disease-free survival (DFS) compared to patients with no 100 expression. The 5-year OS/DFS rates for the IDO-negative, focally positive, and diffusely positive groups were 92.3%/84.9%, 89.5%/75.8%, and 65.5%/51.7%, respectively. When we analyzed patients with stage IB disease alone (n = 67), the OS and DFS for the IDO-diffusely positive group were significantly lower than those for the IDO-negative group. In multivariate analysis, diffuse 100 expression was found to be an independent prognostic factor for impaired OS and DFS. Conclusions. Diffuse expression of IDO in the tumor obtained from Stage IB-IIB cervical cancer patients who underwent radical hysterectomy was correlated with an unfavorable clinical outcome. These findings suggest that IDO may be a novel post-operative prognostic indicator for stage IB-IIB cervical cancer. (C) 2010 Elsevier Inc. All rights reserved.
引用
收藏
页码:423 / 428
页数:6
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