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Home > Press > The mechanism of a novel circular RNA circZFR that promotes colorectal cancer progression

The level of circZFR is associated with CRC stage and survival, and circZFR promotes CRC growth and metastasis in vivo

CREDIT
©Science China Press
The level of circZFR is associated with CRC stage and survival, and circZFR promotes CRC growth and metastasis in vivo CREDIT ©Science China Press

Abstract:
This study is reported by Zhangfa Song’s group from the Sir Run Run Shaw Hospital, Zhejiang University School of Medicine. The research team identified circZFR using circRNA microarray and competing endogenous RNA (ceRNA) microarray, and they confirmed that circZFR is a promising biomarker for CRC diagnosis and prognosis. Currently, the morbidity and mortality of CRC remain high due to the lack of early symptoms and effective early screening technology. Metastasis and recurrence remain the most common causes of death related to CRC. Therefore, it is crucial to find novel biomarkers for CRC diagnosis and prognosis, as well as unravel their mechanisms of action.

The mechanism of a novel circular RNA circZFR that promotes colorectal cancer progression

Beijing, China | Posted on July 5th, 2024

The team studied the function of circZFR, as well as the upstream and downstream events that promote CRC progression. Highly expressed circZFR promotes the proliferation and migration of CRC cells directly or via exosomes. In mouse models, circZFR stimulates tumor growth, and lung and liver metastasis. Mechanistically, ESRP1 in CRC cells may enhance the production of circZFR. The oncogenic protein BCLAF1 binds to circZFR, preventing the ubiquitinated degradation of BCLAF1. In addition, circZFR sponges miR-3127-5p to boost RTKN2 expression. These findings support the use of circZFR as a potential biomarker for CRC diagnosis and a desirable target for future treatment.

The study further shows that the TCP1-CD-QDs nanocarrier is able to carry and deliver circZFR siRNA (si-circZFR) to the vasculature of CRC tissues, effectively inhibiting tumor growth. “The unique looping structure of circRNAs renders them extremely stable, implying that these molecules have a strong biomarker potential for early screening, diagnosis, and prognosis. Our study on circZFR will provide help for researchers in this field to explore more novel functional circRNAs”. Zhangfa Song – the lead author of the study – noted.

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Bei Yan
Science China Press

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Zhangfa Song
Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China

Copyright © Science China Press

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