Exosomal circular RNAs: New player in breast cancer progression and therapeutic targets
Bashdar Mahmud Hussen, Sayran Mohamadtahr, Snur Rasool Abdullah, Hazha Jamal Hidayat, Mohammed Fatih Rasul, Goran Sedeeq Hama Faraj, Soudeh Ghafouri‐Fard, Mohammad Taheri, Maryam Khayamzadeh, Elena Jamali
Abstract
exocytosis. Their cargo contains lipids, proteins, DNA, and different forms of RNA, including circular RNAs. Circular RNAs are new class of non-coding RNAs with a closed-loop shape involved in several types of cancer, including breast cancer. Exosomes contained a lot of circRNAs which are called exosomal circRNAs. By interfering with several biological pathways, exosomal circRNAs can have either a proliferative or suppressive role in cancer. The involvement of exosomal circRNAs in breast cancer has been studied with consideration to tumor development and progression as well as its effects on therapeutic resistance. However, its exact mechanism is still unclear, and there have not been available clinical implications of exo-circRNAs in breast cancer. Here, we highlight the role of exosomal circRNAs in breast cancer progression and to highlight the most recent development and potential of circRNAas therapeutic targets and diagnostics for breast cancer.