 Exosomes are small vesicles secreted from cells that contain mRNA molecules which can influence the development of cancer. These mRNAs can regulate the expression of genes involved in drug resistance, cell proliferation, and apoptosis, as well as affecting the spread of cancer. This suggests that mRNAs may serve as potential biomarkers for diagnosing and monitoring cancer. This article was authored by Shahid Hussein, Saeeda Imanzara Bakhari, Shing Shing Fan, and others.