title: Proline-rich protein 11 regulates epithelial-to-mesenchymal transition to promote breast cancer cell invasion.
abstract: Breast cancer is the leading cause of cancer death in women world wide which is closely related to metastasis. Recent studies argue that breast cancer cells that have undergone epithelial-to-mesenchymal transition (EMT) acquire aggressive malignant properties, but the molecular mechanisms underlying this transition are poorly understood. In this study, we found that increased expression of proline-rich protein 11 (PRR11) was associated with the progression of breast cancer and that PRR11 protein levels were significantly elevated in breast cancer. High PRR11 levels also predict shorter overall survival of breast cancer patients. Moreover, we found that the forced expression of PRR11 decreased the expression of the epithelial marker E-cadherin but increased the mesenchymal markers in breast cancer cells. In contrast, silencing PRR11 in metastatic breast tumor cells promoted a shift toward an epithelial morphology concomitant with increased expression of E-cadherin and decreased expression of mesenchymal markers. PRR11 silencing also reduced the expression of EMT-inducing transcription factors (Snail, Slug, ZEB1 and ZEB2).
authors: Department of Endocrine and Breast Surgery, First Afflliated Hospital of Chongqing Medical University Chongqing 400016, China.
authors: Fanhan
authors: F
authors: Zhou
authors: Department of Endocrine and Breast Surgery, First Afflliated Hospital of Chongqing Medical University Chongqing 400016, China.
authors: Hongtao
authors: H
authors: Liu
authors: Department of Endocrine and Breast Surgery, First Afflliated Hospital of Chongqing Medical University Chongqing 400016, China.
authors: Xiang
authors: X
authors: Zhang
authors: Department of Endocrine and Breast Surgery, First Afflliated Hospital of Chongqing Medical University Chongqing 400016, China.
authors: Yuanyuan
authors: Y
authors: Shen
authors: Department of Endocrine and Breast Surgery, First Afflliated Hospital of Chongqing Medical University Chongqing 400016, China.
authors: Daofeng
authors: D
authors: Zheng
authors: Department of Endocrine and Breast Surgery, First Afflliated Hospital of Chongqing Medical University Chongqing 400016, China.
authors: Aijie
authors: A
authors: Zhang
authors: Department of Endocrine and Breast Surgery, First Afflliated Hospital of Chongqing Medical University Chongqing 400016, China.
authors: Yanmei
authors: Y
authors: Lai
authors: Department of Endocrine and Breast Surgery, First Afflliated Hospital of Chongqing Medical University Chongqing 400016, China.
authors: Hongyuan
authors: H
authors: Li
mesh_terms: D001943:Breast Neoplasms / Q000401:mortality / Q000473:pathology*; D045744:Cell Line, Tumor; D058750:Epithelial-Mesenchymal Transition / Q000502:physiology*; D005260:Female; D006801:Humans; D015151:Immunoblotting; D007150:Immunohistochemistry; D053208:Kaplan-Meier Estimate; D009361:Neoplasm Invasiveness / Q000473:pathology*; D011506:Proteins / Q000378:metabolism*; D060888:Real-Time Polymerase Chain Reaction
chemical_list: C524815:PRR11 protein, human; D011506:Proteins
keywords: EMT; PRR11; breast cancer; invasion; migration