( non-ablative conditioning which leaves...)Cellerant Therapeutics Reversed Autoimmune Disease in Lupus Mice,with Transplant of Purified Donor Blood Stem Cells,Health

non-ablative conditioning, which leaves the subject's immune system intact, and fully myeloablative conditioning, which eradicates the subject's immune system, prior to purified HSC treatment. Traditionally, full, and potentially lethal, myeloablative treatment was considered critical for engraftment success. The researchers found that non-ablative conditioning prior to HSC treatment was not only sufficient to ensure engraftment, but the procedure resulted in improved overall survival. The recipient subjects developed durable mixed chimerism, where the resulting immune system was a mixture of donor and recipient cells. Subjects with established autoimmune disease experienced a reversal of symptoms, including decreased appearance of proteinuria, of circulating immune complexes and of auto-antibodies to nuclear antigens.

The donors and recipients in this study were haplo-mismatched, yet successful engraftment was achieved and graft-versus-host disease (GVHD) was avoided. These results suggest that using a HCT treatment that has been purified of all or most host T cells and NK cells may eliminate the need for complete donor/patient stem cell matching. T-cells were not found to be necessary for engraftment in the procedures performed.

About HSC

Cellerant's highly purified hematopoietic (blood-forming) adult stem cells are isolated from donors or patients undergoing stem cell transplants. This process is designed to provide an improved outcome when used for stem cell transplant indications where a high level of purity is desired or required. After purification, this material contains only stem and progenitor cells, with no detectable contaminating cells such as tumor cells or the T-cells which cause graft-versus-host disease in donor-to-patient transplants. Cellerant is developing hematopoietic stem cells for cancer, genetic blood disorders and autoimmune disease.

About Lupus

Systemic lupus erythematosus (SLE), also called lupus, is an
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