Related Experiment Video
Updated: May 15, 2025
10:27
In Silico Identification and Characterization of circRNAs During Host-Pathogen Interactions
Published on: October 21, 2022
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Transcriptome analysis reveals PTBP1 as a key regulator of circRNA biogenesis
Mohan Wang1,2, Shanshan Zheng2, Yan Zhang1,2
1National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, 430070, China.
BMC Biology
|May 11, 2025
Summary
This study identifies PTBP1 as a key regulator of circular RNA (circRNA) biogenesis. PTBP1 upregulation is linked to increased circRNA levels and cell proliferation, particularly in leukemia.
Area of Science:
- Molecular Biology
- RNA Biology
- Cancer Research
Background:
- Circular RNAs (circRNAs) are non-coding RNAs involved in cellular processes.
- Dysregulated circRNA expression is linked to various diseases.
- The regulatory mechanisms of circRNA biogenesis remain incompletely understood.
Purpose of the Study:
- To identify novel regulatory factors of circRNA biogenesis.
- To elucidate the role of PTBP1 in circRNA production.
- To investigate the clinical relevance of PTBP1-mediated circRNA regulation in leukemia.
Main Methods:
- Whole transcriptome profiling across 10 cell lines.
- PTBP1 knockdown and minigene reporter assays.
- Analysis of clinical samples and ceRNA network construction.
Main Results:
- PTBP1 was identified as a crucial regulator of circRNA biogenesis.
- PTBP1 knockdown significantly reduced circRNA levels and cell proliferation.
- PTBP1 binds to flanking introns, promoting circSPPL3 back splicing.
- PTBP1 and circRNAs are upregulated in acute myeloid leukemia.
Conclusions:
- PTBP1 is a novel regulator of circRNA biogenesis.
- PTBP1 plays a role in promoting circRNA production in vivo.
- A potential link exists between PTBP1, circRNA expression, and leukemia.
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