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Updated: Jun 14, 2025

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LncRNA USP2-AS1 facilitates colorectal cancer development through the PHLDA2/PI3K/AKT axis
Jing Zhu1, Shuhui Lin1, Lisha Chang1
1Department of Oncology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China.
Abstract:
Colorectal cancer (CRC) is one of the most common malignant tumors worldwide, seriously threatening human health. Researchers have revealed that long non-coding RNAs (lncRNAs) are involved in the development of multiple cancers, including CRC. In this study, we explored the expression level, roles, and mechanisms of lncRNA USP2-AS1 in CRC. We discovered that USP2-AS1 was overexpressed in CRC and was relevant to the poor prognosis of CRC patients. Functional experiments clarified that USP2-AS1 facilitated CRC cell growth and migration and reduced apoptosis. Animal experiments demonstrated that USP2-AS1 could promote tumor growth in vivo. Mechanistically, we verified that USP2-AS1 could bind to IGF2BP2, thereby enhancing the stability of PHLDA2 mRNA. Additionally, USP2-AS1 could absorb miR-134-5p to upregulate PHLDA2 expression. Furthermore, our results showed that USP2-AS1 could activate the PI3K/AKT signalling pathway by upregulating the expression of PHLDA2. In conclusion, USP2-AS1 could upregulate PHLDA2 expression by recruiting IGF2BP2 and competitively binding miR-134-5p, thus activating the PI3K/AKT signalling pathway and facilitating CRC malignant progression. Our results prove that USP2-AS1 is a prospective target of CRC.
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