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Study Offers Clues for Optimizing Bone Marrow Transplants

April 30, 2019
  • bone_marrow.gif
    Stem cells that were successfully transplanted don’t behave normally as in a healthy person without a bone marrow transplant, found a new USC and Stanford study, conducted in mice.

    Bone marrow transplants, which involve transplanting healthy blood stem cells, offer the best treatment for many types of cancers, blood disorders and immune diseases. Even though 22,000 of these procedures are performed each year in the US, much remains to be understood about how they work.

    The findings appeared in Proceedings of the National Academy of the Sciences (PNAS).

    "Our research has important implications for understanding and optimizing bone marrow transplants and certain types of gene therapy," said lead researcher and co-corresponding author Rong Lu, assistant professor of stem cell biology and regenerative medicine at USC. The other co-corresponding author is Irving Weissman, director of the Stanford Institute for Stem Cell Biology and Regenerative Medicine.

    In a series of experiments, scientists learned that when transplanted into an irradiated mouse, only a very small minority of the stem cells produce blood and immune cells, while many other stem cells become dormant and do nothing. In addition, post-radiation, this handful of "super producer" stem cells also become biased towards producing only certain types of immune cells. However, the overall blood and immune system, still tends to remain balanced.

    Source-Eurekalert

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