Mol Biotechnol. 2022 Jun;64(6):660-669.doi: 10.1007/s12033-022-00452-w. Epub 2022 Jan 22.

Clinical Potential of lncRNA PPP1R26-AS1 in Breast Cancer and Its Contribution to Cancer Progression

Affiliations

Affiliations

  • 1 Department of Medical Oncology, Shanghai Sixth People’s Hospital, No. 222, Huanhuxi Third Road, Shanghai, 201306, China.
  • 2 Department of Geriatrics, Shanghai Sixth People’s Hospital, Shanghai, 201306, China.
  • 3 Department of Medical Oncology, Shanghai Sixth People’s Hospital, No. 222, Huanhuxi Third Road, Shanghai, 201306, China. zhoumx_6@163.com.
# Contributed equally.

Abstract

Breast cancer has become the most leading diagnosed tumor worldwide in 2020. In this study, the biomarker potential and influence on the cellular function of lncRNA PPP1R26-AS1 was investigated in breast cancer. Expression levels of lncRNA PPP1R26-AS1 in breast tissues and cells were detected by RT-qPCR. Association between lncRNA PPP1R26-AS1 level and clinical parameters was investigated by Chi-square analysis. The prognostic potential was assessed by Kaplan-Meier and multivariate Cox regression analysis. Knockdown of lncRNA PPP1R26-AS1 was subjected to study the effect on cell proliferation, invasion, and migration by CCK-8 and transwell assay. The bind between PPP1R26-AS1 and miR-1226-3p was investigated. LncRNA PPP1R26-AS1 was highly expressed in breast tissues and cell lines. This upregulation was correlated with pTNM, positive ER status, luminal B subtype, positive nodal status, and shorter overall survival in breast cancer patients. Significant decreases in proliferation, migration, and invasion activity were observed upon knockdown of lncRNA PPP1R26-AS1. lncRNA PPP1R26-AS1 could act as ceRNA to bind with miR-1226-3p in breast cancer. LncRNA PPP1R26-AS1, as oncogenic lncRNA, could provide a new perspective on the development of prognostic biomarkers and a new approach in tailoring the treatment personalized in breast cancer.

Keywords: Breast cancer; Cellular function; Prognosis; lncRNA PPP1R26-AS1.

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