Stem Cell Donor Quotes

The cure for HIV?” “In 2007, a man named Timothy Ray Brown, known later as the Berlin patient, was cured of HIV. Brown was diagnosed with acute myeloid leukemia. His HIV-positive status complicated his treatment. During chemotherapy, he battled sepsis, and his physicians had to explore less traditional approaches. His hematologist, Dr. Gero Hutter, decided on a stem cell therapy: a full bone marrow transplant. Hutter actually passed over the matched bone marrow donor for a donor with a specific genetic mutation: CCR5-Delta 32. CCR5-Delta 32 makes cells immune to HIV.” “Incredible.” “Yes. At first, we thought the Delta 32 mutation must have arisen during the Black Death in Europe—about four to sixteen percent of Europeans have at least one copy. But we’ve traced it back further. We thought perhaps smallpox, but we’ve found Bronze Age DNA samples that carry it. The mutation’s origins are a mystery, but one thing is certain: the bone marrow transplant with CCR5-Delta 32 cured both Brown’s leukemia and HIV. After the transplant, he stopped taking his antiretrovirals and has never again tested positive for HIV.

Similar things happen in so many diseases – the insulin-secreting cells that are lost when teenagers develop type 1 diabetes, the brain cells that are lost in Alzheimer’s disease, the cartilage producing cells that disappear during osteoarthritis – the list goes on and on. It would be great if we could replace these with new cells, identical to our own. This way we wouldn’t have to deal with all the rejection issues that make organ transplants such a challenge, or with the lack of availability of donors. Using stem cells in this way is referred to as therapeutic cloning; creating cells identical to a specific individual in order to treat a disease.

Human pluripotent stem cells are considered a suitable source of dopaminergic neurons because the supply of early human foetuses as graft donors is limited. Also, since they are obtained as a result of elective abortion, there are inevitably some ethical issues. Abortion is opposed by more people than oppose the use of human preimplantation embryos to grow embryonic stem cells. So there is a significant body of opinion who consider it is all right to use human embryonic stem cells but not all right to use human foetal grafts. Accordingly, Parkinson’s disease is usually listed among the priority diseases for treatment with human ES cells, or more recently, with iPS cells.