CircAHNAK1 inhibits proliferation and metastasis of triple-negative breast cancer by modulating miR-421 and RASA1.

Abstract:

BACKGROUND:There is increasing evidence that circular RNAs (circRNAs) participate in regulating cancer progression. However, the function and potential molecular mechanisms of circRNA in triple negative breast cancer (TNBC) are currently largely unclear. RESULTS:We found that circAHNAK1 was significantly down-regulated in TNBC, and its expression was negatively associated with RFS and OS. Overexpression of circAHNAK1 can inhibit TNBC proliferation, migration and invasion in vitro. In vivo studies confirmed that circAHNAK1 inhibited TNBC tumor growth and metastasis. Mechanistic analysis indicated that circAHNAK1 acted as a miR-421 ceRNA (competitive endogenous RNA) to attenuate the inhibitory effect of miR-421 on its target gene RASA1. CONCLUSIONS:In conclusion, CircAHNAK1 inhibits proliferation and metastasis of TNBC by modulating miR-421 and RASA1. METHODS:CircRNA microarrays were used to screen for differential circRNA expression profiles. qRT-PCR was used to detect the expression levels of circRNAs. The effect of circAHNAK1 on recurrence -free survival (RFS) and overall survival (OS) in patients with TNBC was subsequently analyzed. The role of circAHNKA1 in the progression of TNBC was further evaluated by multiple in vivo and in vitro assays. Finally, we focused on the regulation of circAHNAK1 on miR-421 and its targeted gene RASA1 in TNBC.

journal_name

Aging (Albany NY)

journal_title

Aging

authors

Xiao W,Zheng S,Zou Y,Yang A,Xie X,Tang H,Xie X

doi

10.18632/aging.102539

subject

Has Abstract

pub_date

2019-12-19 00:00:00

pages

12043-12056

issue

24

issn

1945-4589

pii

102539

journal_volume

11

pub_type

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