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Calcium Receptor Vital For Stem Cell Migration to Bone Marrow

A new discovery of a dictator molecule that governs the migration of blood stem cells to the bone marrow, resulting in subsequent production of blood cell components and immune stem cells could // hold the key to the development of more effective stem cell therapy for malignant and non-malignant conditions in the future.

"This is another remarkable example of how bone and bone marrow interact. A receptor known to participate in the body's regulation of calcium and bone also is critical for stem cells to engraft in the bone marrow and regenerate blood and immune cells", said David Scadden, one of the senior researchers.

"It reminds us how tissues interact and how looking closely at where stem cells reside may tell us a lot about how to manipulate them", he added. Bone marrow transplantation is a life saving treatment option for a number of people suffering from hematological malignancies and other condition such as sickle cell anemia and thalassemia.

The hematopoietic stem cells that have a remarkable regenerative capacity play a very critical role in the production of blood cell components such as the red blood cell, white blood cell and platelets. It also governs the production of various cellular components of the immune system. More than 10 million of these cells are being produced everyday.

The success of bone marrow transplantation lies in the direction of the obtained stem cells from the donor (through bone marrow aspiration) to a specific region such as the brain or bone marrow to induce renewal and recovery. The stem cell preparation is usually administered in the form of an intravenous infusion.

The stem cells are usually found in the peripheral layer, close to the inner surface of the bone, within the bone marrow cavity. Previous studies had already established that the stem cells are regulated by the adjacent bone forming cells (osteoblasts) to some degree. Hence it is quite probable that factors
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