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The Johns Hopkins University School of Medicine

Office of Research Administration733 North BroadwayBRB, Suite 117
Baltimore, MD 21205
United States

Mentor Name: Jeffery Rubens

Mentor: Alan Friedman

Mentor: Jeffery Rubens

Mentor: Brian Ladle

Mentor: Challice Bonifant

Mentor: Linda Resar

Bone marrow transplantation, also known as hematopoietic stem cell transplantation (HSCT) is the only curative treatment for many malignant disorders, such as aggressive types of leukemia and lymphoma. It is also increasingly used to treat disorders other than cancer. Unfortunately, successful outcomes following HSCT can be limited by either cancer relapse, or graft-versus-host disease (GVHD), a complication wherein the new, donor, immune system attacks the patient causing significant multi-organ injury and dysfunction, which can be fatal.

Improved treatment of pediatric spinal cord gliomas will require better models to help us understand why these tumors form, and with which to test new therapies. Over the last 10 years, our understanding of the molecular changes which drive these tumors has improved, making it feasible to create such models using stem cells isolated from the fetal mouse spinal cord. We have introduced genetic drivers associated with spinal ependymoma, as well as low- and high-grade spinal astrocytoma, into murine spinal neural stem and progenitor cells.

Background

H3 G34R and BCOR ITD alterations are genetic events recently found in a subset of pediatric “high-grade gliomas” – aggressive brain tumors for which no cures currently exist. These genes are thought to regulate many signaling pathways through "epigenetic" modification of the overall DNA structure. However, we do not currently understand in detail how they make brain cells into tumors, and few models which can be used to the testing of therapies models exist.

Mentor: Dr. Jeffrey Rubens

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