Title:Circular RNAs: Emerging Modulators in the Pathophysiology of
Polycystic Ovary Syndrome and their Clinical Implications
Volume: 24
Issue: 2
Author(s): Sahar Mazloomi, Vahide Mousavi, Esmat Aghadavod*Alireza Mafi*
Affiliation:
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran
- Department of Clinical Biochemistry, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
- Department of Clinical Biochemistry, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
Keywords:
microRNAs, circRNAs, PCOS, biomarker, insulin resistance, hyperandrogenism.
Abstract:
Polycystic ovary syndrome (PCOS) is a prevalent endocrine/metabolic disorder
in women of reproductive age. PCOS is characterized by hyperandrogenism,
polycystic ovary morphology, and ovulatory dysfunction/anovulation. It involves multiple
effects in patients, including granulosa/theca cell hyperplasia, menstrual disturbances,
infertility, acne, obesity, insulin resistance, and cardiovascular disorders.
Biochemical analyses and the results of RNA sequencing studies in recent years have
shown a type of non-coding RNAs as a splicing product known as circular RNAs (circRNAs).
Several biological functions have been identified in relation to circRNAs, including
a role in miRNA sponge, protein sequestration, increased parental gene expression,
and translation leading to polypeptides. These circular molecules are more
plentiful and specialized than other types of RNAs. For this reason, they are referred to
as potential biomarkers in different diseases. Evidence suggests that circRNAs may
have regulatory potentials through different signaling pathways, such as the miRNA
network.
Probably most experts in the field of obstetricians are not aware of circRNAs as a
useful biomarker. Therefore, this review focused on the researches that have been
done on the involvement of circRNAs in PCOS and summarized recent supportive
evidence, and evaluated the circRNA association and mechanisms involved in PCOS.