Expression of autophagy-related markers beclin-1, light chain 3A, light chain 3B and p62 according to the molecular subtype of breast cancer

被引:85
作者
Choi, Junjeong [2 ]
Jung, Woohee [1 ]
Koo, Ja Seung [1 ]
机构
[1] Yonsei Univ, Coll Med, Dept Pathol, Seoul 120752, South Korea
[2] Yonsei Univ, Wonju Coll Med, Dept Pathol, Wonju, South Korea
基金
新加坡国家研究基金会;
关键词
autophagy; breast cancer; immunohistochemistry; molecular subtype; PROTEIN EXPRESSION; PROGNOSTIC-FACTORS; OXIDATIVE STRESS; TUMOR-STROMA; FIBROBLASTS; PATTERNS; INFLAMMATION; SURVIVAL; HYPOXIA; GROWTH;
D O I
10.1111/his.12002
中图分类号
Q2 [细胞生物学];
学科分类号
071009 ; 090102 ;
摘要
Choi J, Jung W & Koo J S (2013) Histopathology 62, 275-286 Expression of autophagy-related markers beclin-1, light chain 3A, light chain 3B and p62 according to the molecular subtype of breast cancer Aims: To investigate the relationship between the expression of autophagy-related proteins, including beclin-1, light chain (LC) 3A, LC3B, and p62, and prognosis in invasive breast cancer. Methods and results: We constructed tissue microarrays from the breast cancer cells of 489 patients, and classified molecular subtypes using surrogate immunohistochemical stains. The tumoral expression levels of LC3A and LC3B were highest in triple-negative breast cancer (TNBC) (P < 0.001), whereas these types of tumour had the lowest expression levels of these markers in the stroma (P = 0.005 and P < 0.001, respectively). Cytoplasmic beclin-1 expression was highest in TNBC, but nuclear expression was lowest (P < 0.001). p62 cytoplasmic and nuclear expression were highest in HER2-type tumours (P = 0.001 and P < 0.001, respectively). Tumoral LC3A and LC3B expression were associated with high histological grade (P < 0.001, and P < 0.028, respectively), but nuclear p62 expression was associated with lower histological grade (P = 0.004). Conclusions: Autophagy-related markers are differentially expressed according to the molecular subtype of breast cancer. In particular, expression of LC3A, LC3B and beclin-1 was highest in TNBC tumour cells, whereas that of LC3A and LC3B in the tumour stroma was lowest in TNBC.
引用
收藏
页码:275 / 286
页数:12
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