PIWI interacting RNAs perspectives: a new avenues in future cancer investigations
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Updated: Oct 14, 2025

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Published on: May 30, 2025
Pooneh Mokarram1,2, Maryam Niknam2, Mohammadamin Sadeghdoust3
1Autophagy Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
Abstract:
As a currently identified small non-coding RNAs (ncRNAs) category, the PIWI-interacting RNAs (piRNAs) are crucial mediators of cell biology. The human genome comprises over 30.000 piRNA genes. Although considered a new field in cancer research, the piRNA pathway is shown by the existing evidence as an active pathway in a variety of different types of cancers with critical impacts on main aspects of cancer progression. Among the regulatory molecules that contribute to maintaining the dynamics of cancer cells, the P-element Induced WImpy testis (PIWI) proteins and piRNAs, as new players, have not been broadly studied so far. Therefore, the identification of cancer-related piRNAs and the assessment of target genes of piRNAs may lead to better cancer prevention and therapy strategies. This review articleaimed to highlight the role and function of piRNAs based on existing data. Understanding the role of piRNA in cancer may provide perspectives on their applications as particular biomarker signature in diagnosis in early stage, prognosis and therapeutic strategies.
Insights
PIWI-interacting RNAs (piRNAs) are small non-coding RNAs vital in cell biology and cancer progression. Research into piRNAs and PIWI proteins offers new avenues for cancer biomarkers and therapies.
Area of Science:
- Molecular Biology
- Genetics
- Cancer Research
Background:
- PIWI-interacting RNAs (piRNAs) are a class of small non-coding RNAs regulating gene expression.
- The piRNA pathway is implicated in various cancers, influencing disease progression.
- PIWI proteins and piRNAs are emerging players in cancer cell dynamics.
Purpose of the Study:
- To review the current understanding of piRNA roles and functions in cancer.
- To highlight the potential of piRNAs in cancer diagnosis, prognosis, and therapy.
Main Methods:
- Literature review of existing data on piRNAs in cancer.
- Analysis of the piRNA pathway's involvement in cancer progression.
Main Results:
- The piRNA pathway is active in numerous cancer types.
- PiRNAs significantly impact key aspects of cancer development.
- Identification of cancer-related piRNAs and their targets is crucial.
Conclusions:
- Understanding piRNA functions in cancer is essential for developing novel strategies.
- PiRNAs show promise as diagnostic biomarkers for early cancer detection.
- PiRNAs may offer new therapeutic targets and prognostic indicators.
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