Gene delivery is the process of introducing genetic material into cells to treat diseases or enhance biological functions. This technique is crucial in gene therapy, where faulty genes are replaced or repaired to combat genetic disorders. Various methods, such as viral vectors and nanoparticles, are used to transport the desired genes into target cells effectively. The success of gene delivery depends on several factors, including the type of cells being targeted and the method of delivery. Researchers are continually exploring new technologies to improve the efficiency and safety of gene delivery systems, aiming to make treatments like those for cancer and genetic disorders more effective.