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자료유형
학술저널
저자정보
이송빈 (Interdisciplinary Graduate Program in Cancer Biology Seoul National University College of Medicine Seoul Korea.) 이우찬 (Department of Biomedical Sciences Seoul National University College of Medicine Seoul Korea.Genomic Medicine Institute Medical Research Center Seoul Korea.) 허우행 (Center for Medical Innovation Seoul National University Hospital Seoul Korea.) 손혜연 (Center for Medical Innovation Seoul National University Hospital Seoul Korea.) 허유정 (Interdisciplinary Graduate Program in Cancer Biology Seoul National University College of Medicine Seoul Korea.) 김종일 (Department of Biomedical Sciences Seoul National University College of Medicine Seoul Korea.Genomic Medicine Institute Medical Research Center Seoul Korea.) 문형곤 (Cancer Research Institute Seoul National University Seoul Korea.Department of Surgery Seoul National University Hospital Seoul Korea.Department of Surgery Seoul National University College of Medicine)
저널정보
한국유방암학회 Journal of Breast Cancer Journal of Breast Cancer Vol.26 No.1
발행연도
2023.2
수록면
60 - 76 (17page)
DOI
10.4048/jbc.2023.26.e1

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Purpose: Patients with triple-negative breast cancer (TNBC) have an increased risk of distant metastasis compared to those with other subtypes. In this study, we aimed to identify the genes associated with distant metastasis in TNBC and their underlying mechanisms. Methods: We established patient-derived xenograft (PDX) models using surgically resected breast cancer tissues from 31 patients with TNBC. Among these, 15 patients subsequently developed distant metastases. Candidate metastasis-associated genes were identified using RNA sequencing. In vitro wound healing, proliferation, migration, and invasion assays and in vivo tumor xenograft and metastasis assays were performed to determine the functional importance of aldo-keto reductase family 1 member C2 (AKR1C2). Additionally, we used the METABRIC dataset to investigate the potential role of AKR1C2 in regulating TNBC subtypes and their downstream signaling activities. Results: RNA sequencing of primary and PDX tumors showed that genes involved in steroid hormone biosynthesis, including AKR1C2, were significantly upregulated in patients who subsequently developed metastasis. In vitro and in vivo assays showed that silencing of AKR1C2 resulted in reduced cell proliferation, migration, invasion, tumor growth, and incidence of lung metastasis. AKR1C2 was upregulated in the luminal androgen receptor (LAR) subtype of TNBC in the METABRIC dataset, and AKR1C2 silencing resulted in the downregulation of LAR classifier genes in TNBC cell lines. The androgen receptor (AR) gene was a downstream mediator of AKR1C2-associated phenotypes in TNBC cells. AKR1C2 expression was associated with gene expression pathways that regulate AR expression, including JAK-STAT signaling or interleukin 6 (IL-6). The levels of phospho-signal transducer and activator of transcription and IL-6, along with secreted IL-6, were significantly downregulated in AKR1C2-silenced TNBC cells. Conclusion: Our data indicate that AKR1C2 is an important regulator of cancer growth and metastasis in TNBC and may be a critical determinant of LAR subtype features.

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