OncoTargets and Therapy (Apr 2021)

Expression and Prognosis of Sperm-Associated Antigen 1 in Human Breast Cancer

  • Lin S,
  • Lv Y,
  • Zheng L,
  • Mao G,
  • Peng F

Journal volume & issue
Vol. Volume 14
pp. 2689 – 2698

Abstract

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Shuangyan Lin,1 Yanbo Lv,1 Luoning Zheng,1 Genxiang Mao,2 Fang Peng1 1Department of Pathology, Zhejiang Hospital, Hangzhou, Zhejiang, People’s Republic of China; 2Department of Geriatrics, Zhejiang Provincial Key Laboratory of Geriatrics, Hangzhou, Zhejiang, People’s Republic of ChinaCorrespondence: Fang PengDepartment of Pathology, Zhejiang Hospital, 12 Lingyin Road, Hangzhou, Zhejiang, People’s Republic of ChinaEmail [email protected]: Sperm-associated antigen 1 (SPAG1) has been identified as a marker of pancreatic cancer progression and promoter of cell motility; however, its role in breast cancer is not completely understood.Methods: SPAG1 expression in breast cancer tissues and normal tissues was obtained from online databases. Knockdown function assays were designed and conducted to verify the functional role of SPAG1 in breast cancer cell lines. Cell counting and MTT assays were used to assess cell proliferation. Cell flow cytometry assay was used for cell cycle phase arrest, and fluorescence microscopy was used for colony formation assessment.Results: Both the mRNA and protein levels of SPAG1 were significantly higher in the breast cancer tissues than in the normal tissues. In addition, SPAG1 is significantly related to many clinicopathological features of breast cancer, such as age (> 51 years), estrogen receptor (ER) (+), progesterone receptor (PR) (+), and nodal status (+), non-triple negative breast cancer (TNBC), not basal-like and not basal-like and not TNBC. Survival analysis indicates that breast cancer patients with low expression of SPAG1 had a significantly better prognosis with relapse-free survival (RFS). Functional experiment analysis revealed that knockdown of SPAG1 suppressed cell proliferation and colony-forming ability.Conclusion: Our results suggested a possible role of SPAG1 in breast cancer pathogenesis.Keywords: breast cancer, SPAG1, UALCAN, proliferation, colony formation

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