CircAGO2 promotes colorectal cancer progression by inhibiting heat shock protein family B (small) member 8 via miR-1-3p/retinoblastoma binding protein 4 axis

Abstract This paper was to uncover the mechanism of circular RNA Argonaute 2 (circAGO2) in colorectal cancer (CRC) progression. The expression of circAGO2 was detected in CRC cells and tissues, and the relationship between clinicopathological features of CRC and circAGO2 level was evaluated. The growth and invasion of CRC cells and subcutaneous xenograft of nude mice were measured to evaluate the effect of circAGO2 on CRC development. Bioinformatics databases were applied to analyze levels of retinoblastoma binding protein 4 (RBBP4) and heat shock protein family B 8 (HSPB8) in cancer tissues. The relevance of circAGO2 and RBBP4 expression and the relationship between RBBP4 and HSPB8 during histone acetylation were assessed. The targeting relationship between miR-1-3p and circAGO2 or RBBP4 was predicted and confirmed. The effects of miR-1-3p and RBBP4 on biological functions of CRC cells were also verified. CircAGO2 was upregulated in CRC. CircAGO2 promoted the growth and invasion of CRC cells. CircAGO2 competitively bound to miR-1-3p and regulated RBBP4 expression, thus inhibiting HSPB8 transcription by promoting histone deacetylation. Silencing circAGO2 enhanced miR-1-3p expression and reduced RBBP4 expression, while suppression of miR-1-3p downgraded levels of miR-1-3p, up-regulated RBBP4, and facilitated cell proliferation and invasion in the presence of silencing circAGO2. RBBP4 silencing decreased RBBP4 expression and reduced proliferation and invasion of cells where circAGO2 and miR-1-3p were silenced. CircAGO2 overexpression decoyed miR-1-3p to increase RBBP4 expression, which inhibited HSPB8 transcription via histone deacetylation in HSPB8 promoter region, promoting proliferation and invasion of CRC cells..

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:23

Enthalten in:

Functional & integrative genomics - 23(2023), 2 vom: 07. März

Sprache:

Englisch

Beteiligte Personen:

Zhu, Xijia [VerfasserIn]
Luo, Xishun [VerfasserIn]
Long, Xiangkai [VerfasserIn]
Jiang, Shiyu [VerfasserIn]
Xie, Xinyang [VerfasserIn]
Zhang, Qiqi [VerfasserIn]
Wang, Haipeng [VerfasserIn]

Links:

Volltext [lizenzpflichtig]

BKL:

42.13$jMolekularbiologie

44.48$jMedizinische Genetik

Themen:

Circular RNA Argonaute 2
Colorectal cancer
Heat shock protein family B (small) member 8
MicroRNA-1-3p
Retinoblastoma binding protein 4

Anmerkungen:

© The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

doi:

10.1007/s10142-023-00990-9

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

OLC2134343443

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