Small interfering RNA (siRNA)

Small interfering RNA (siRNA) is a molecule that plays a crucial role in regulating gene expression within cells. It works by targeting specific messenger RNA (mRNA) molecules, which carry instructions from DNA for making proteins. When siRNA binds to its matching mRNA, it triggers the destruction of that mRNA, preventing the production of the corresponding protein. This process is part of a natural defense mechanism against viruses and is also used in research and medical applications to silence harmful genes. In essence, siRNA serves as a molecular tool to control gene activity in living organisms.