Why are induced pluripotent stem cells an alternative to therapeutic cloning?

Induced pluripotent stem cells (iPS cells) serve as a significant alternative to therapeutic cloning primarily because they bypass the profound ethical and moral concerns associated with the use of human embryos.123

Therapeutic cloning requires the creation of cloned embryos—often involving the procurement of human eggs—to derive stem cells, a process that has faced substantial technical challenges and intense ethical controversy. In contrast, iPS cells are generated by reprogramming a patient's own adult somatic cells (such as skin cells) into a pluripotent state using specific genetic factors.4125

This approach offers several key advantages:
* Ethical Viability: Because iPS cells do not require the destruction or use of embryos, they provide a less controversial source of pluripotent cells.123
* Immune Compatibility: Like cells derived from therapeutic cloning, iPS cells can be patient-specific. Because they are derived from the patient's own tissue, they are highly valuable for transplantation therapies as they are unlikely to be rejected by the immune system.125
* Disease Modeling: iPS cells allow researchers to study genetic diseases by creating laboratory models that retain the patient's specific genotype, facilitating the development of personalized therapeutic strategies.153