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Article

Knockdown of SASS6 reduces growth of MDA‑MB‑231 triple‑negative breast cancer cells through arrest of the cell cycle at the G2/M phase

  • Authors:
    • Lili Du
    • Jiexian Jing
    • Yan Wang
    • Xiaoqin Xu
    • Ting Sun
    • Yanchun Shi
    • Weigang Wang
    • Baoguo Tian
    • Cunzhi Han
    • Xianwen Zhao
    • Huibo Chang
  • View Affiliations / Copyright

    Affiliations: Department of Etiology, Shanxi Cancer Hospital, Taiyuan, Shanxi 030013, P.R. China, Department of Biochemistry and Immunology, Capital Institute of Pediatrics, Beijing 100020, P.R. China
  • Article Number: 101
    |
    Published online on: April 13, 2021
       https://doi.org/10.3892/or.2021.8052
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Abstract

Spindle assembly abnormal protein 6 homolog (SASS6) is crucial for centriole duplication; however, the role of SASS6 in the proliferation of cancer cells remains unclear. In the present study, the expression and functional role of SASS6 in triple negative breast cancer (TNBC) was assessed. Immunohistochemical staining was performed using an anti‑SASS6 antibody in TNBC and normal tissues. Lentivirus‑mediated RNA interference was used to knockdown SASS6 in MDA‑MB‑231 TNBC cells. Cell viability was determined using an MTT assay, and cell cycle distribution and apoptosis were measured using flow cytometry. Additionally, PathScan intracellular signaling arrays were used to detect the presence of intracellular signaling molecules. The results revealed that SASS6 expression was increased in TNBC tissues compared with the control tissue. Moreover, SASS6 knockdown significantly suppressed the growth of MDA‑MB‑231 cells. MDA‑MB‑231 cell cycle progression was arrested at the G2/M phase and cyclin dependent kinase 1 (CDK1), cyclin B1 and PCNA expression in MDA‑MB‑231 cells was decreased following SASS6 knockdown. Furthermore, the phosphorylation of STAT3, BAD and rpS6 was reduced following SASS6 knockdown. A strong correlation between SASS6 and CDK1 expression was observed in TNBC tissues based on immunohistochemical staining analysis (R=0.989; P<0.001). In conclusion, the present study revealed the crucial role of SASS6 in promoting MDA‑MB‑231 cell growth, regulating cell cycle progression and its ability to downregulate the CDK1/cyclin B1 signaling pathway, thus highlighting the potential of SASS6 as a therapeutic target for treatment of TNBC, and merits further investigation in animal models or in preclinical and clinical studies.
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Copy and paste a formatted citation
Spandidos Publications style
Du L, Jing J, Wang Y, Xu X, Sun T, Shi Y, Wang W, Tian B, Han C, Zhao X, Zhao X, et al: Knockdown of SASS6 reduces growth of MDA‑MB‑231 triple‑negative breast cancer cells through arrest of the cell cycle at the G2/M phase. Oncol Rep 45: 101, 2021.
APA
Du, L., Jing, J., Wang, Y., Xu, X., Sun, T., Shi, Y. ... Chang, H. (2021). Knockdown of SASS6 reduces growth of MDA‑MB‑231 triple‑negative breast cancer cells through arrest of the cell cycle at the G2/M phase. Oncology Reports, 45, 101. https://doi.org/10.3892/or.2021.8052
MLA
Du, L., Jing, J., Wang, Y., Xu, X., Sun, T., Shi, Y., Wang, W., Tian, B., Han, C., Zhao, X., Chang, H."Knockdown of SASS6 reduces growth of MDA‑MB‑231 triple‑negative breast cancer cells through arrest of the cell cycle at the G2/M phase". Oncology Reports 45.6 (2021): 101.
Chicago
Du, L., Jing, J., Wang, Y., Xu, X., Sun, T., Shi, Y., Wang, W., Tian, B., Han, C., Zhao, X., Chang, H."Knockdown of SASS6 reduces growth of MDA‑MB‑231 triple‑negative breast cancer cells through arrest of the cell cycle at the G2/M phase". Oncology Reports 45, no. 6 (2021): 101. https://doi.org/10.3892/or.2021.8052
Copy and paste a formatted citation
x
Spandidos Publications style
Du L, Jing J, Wang Y, Xu X, Sun T, Shi Y, Wang W, Tian B, Han C, Zhao X, Zhao X, et al: Knockdown of SASS6 reduces growth of MDA‑MB‑231 triple‑negative breast cancer cells through arrest of the cell cycle at the G2/M phase. Oncol Rep 45: 101, 2021.
APA
Du, L., Jing, J., Wang, Y., Xu, X., Sun, T., Shi, Y. ... Chang, H. (2021). Knockdown of SASS6 reduces growth of MDA‑MB‑231 triple‑negative breast cancer cells through arrest of the cell cycle at the G2/M phase. Oncology Reports, 45, 101. https://doi.org/10.3892/or.2021.8052
MLA
Du, L., Jing, J., Wang, Y., Xu, X., Sun, T., Shi, Y., Wang, W., Tian, B., Han, C., Zhao, X., Chang, H."Knockdown of SASS6 reduces growth of MDA‑MB‑231 triple‑negative breast cancer cells through arrest of the cell cycle at the G2/M phase". Oncology Reports 45.6 (2021): 101.
Chicago
Du, L., Jing, J., Wang, Y., Xu, X., Sun, T., Shi, Y., Wang, W., Tian, B., Han, C., Zhao, X., Chang, H."Knockdown of SASS6 reduces growth of MDA‑MB‑231 triple‑negative breast cancer cells through arrest of the cell cycle at the G2/M phase". Oncology Reports 45, no. 6 (2021): 101. https://doi.org/10.3892/or.2021.8052
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