The laboratory grew and stored human stem cells, which are capable of becoming any cell in the body, and made them available to scientists nationwide for use in experiments to study diseases such as diabetes and spinal cord injuries. When it is dismantled, several thousand vials of stem cellswill be sent back to the research centers where they originated, and the equipment will be given to other UMass labs.

Susan Windham-Bannister, president of the Massachusetts Life Sciences Center, a quasi-public agency that oversees the $1 billion life sciences initiative, defended the decision to initially fund the stem cell bank. She said there are many examples of technology that in hindsight are unnecessary, but at the time it was conceived, when the investment was made, it was absolutely state of the art. The center, she said, was one of them.

Originally, the bank was seen as a repository for embryonic stem cell lines that were being created but were not eligible for federal funding under Bush-era restrictions. The field has evolved significantly since then, with President Obamas loosening of restrictions on federal funding and the development of new technologies for making stem cells.

Still, stem cell banks are seen as useful by some. The California Institute for Regenerative Medicine, for example, is preparing to invest $10 million in its own stem cell banking initiative, and another $20 million to underwrite the creation of stem cells from patients with specific diseases.

Massachusetts Senate minority leader Bruce Tarr, Republican of Gloucester, said he was concerned that lawmakers had not been told the bank would close.

Given the fact that this is a resource that was created by an act of the Legislature, I would hope anyone seeking to change its status would consult with the Legislature, he said. The notion has always been we have been working hard to make Massachusetts a leader in stem cell research, and I dont know how ceasing the operations of the stem cell bank advances that goal.

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UMass stem cell lab to close