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For the First Time, a Glioma ¨C Brain Cancer ¨C may be Eliminated by a Chinese Research/Medical Team, Using a Novel Stem Cell Based Therapy of Cellonis Biotech, Beijing
Date:12/17/2009

er treatments with Traditional Chinese Medicine (TCM) and cell therapies.

The role of cancer stem cells in the tumors

Scientists previously believed that tumors are lumps of cancer tissue that must be completely removed or destroyed to cure a patient. But over the past few years, researchers have learned that cancer stem cells (CSCs), comprising a small population of cells, appear to be responsible for the initiation, upkeep and relapse of malignant tumors. Even if a tumor is almost completely obliterated, it will regenerate from the surviving CSCs and become even more resistant to treatment than before.

Current therapies, including cell therapy, generally do not target CSCs. This allows CSCs to survive until after chemotherapy or radiation treatments. Killing those cells is a promising strategy to eliminate tumors and prevent them from re-growing.

Prof. Lily Shum: Perfect integration of stem cells and immunotherapies

"The CSCs may explain why common treatments, particularly chemotherapy, are not sufficient to kill tumors. In fact, despite the continuous development of new chemotherapeutic agents, brain tumors can develop and remain resistant to those therapies. The integration of stem cells and immune technologies seems to give us a chance to find out a new way to target at CSCs," says Prof. Lily Shum, PhD, the chief scientist of Cellonis.

"The difficult issue in our project is how to capture and classify CSCs. With our patented technologies, we are able to isolate the CSCs from patient's brain tumor tissues, culture them and induce the multi-drug and radiation resistance. These cells possess very strong carcinogenicity, self-renewal, and also a very strong drug and radiation resistance."

Lily Shum adds, "The Dendritic Cell (DC) is a very useful tool to conduct a specific immune response against brain CSCs." As we know, DC is an antigen-presenting cell
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