Dr. Pollen is using comparative genomics, single cell gene expression, and stem cell biology approaches to study genes uniquely expressed in human neural stem cells. Because the development of the human brain involves many of the same processes - increased proliferation, migration, and angiogenesis - that become dysregulated in brain tumors, these genes with specific neural stem cell expression may serve as therapeutic targets and diagnostic markers of brain tumor stem cells that initiate glioblastoma and other cancers.