let-7

Let-7 is a small molecule found in cells called a microRNA, which helps regulate gene activity. Its main role is to control how much certain proteins are produced by turning off or reducing the activity of specific genes. This regulation is crucial for normal growth, development, and maintaining healthy cell function. If let-7 levels are abnormal, it can contribute to issues like cancer, where cell growth becomes unregulated. Overall, let-7 acts as a fine-tuner in the body's genetic orchestra, ensuring cells function properly and maintain balance.