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Zebrafish provide insights into causes and treatment of human diseases
Date:7/6/2012

ghts into the fundamental processes disrupted in SMA.

Acute T-cell Lymphoblastic Leukemia and Lymphoma (T-ALL/T-LBL)

Human acute T-cell lymphoblastic leukemias (ALL) and lymphomas (LBL) have high relapse rates in pediatric patients and high mortality rates in adults. Hui Feng, M.D., Ph.D., currently at the Pharmacology Department and Center for Cancer Research at Boston University School of Medicine, is using a zebrafish model of leukemia to search for promising targets for new molecular treatments for these diseases.

To date, studies have identified several biological pathways involved in ALL and LBL, all with a known oncogene in common called c-Myc. However, Myc is so common, involved in regulating more than 15 percent of all genes, that it is very hard to study.

"Because this is a huge list of downstream targets, it is very challenging to predict which genes in the pathway to target to treat Myc-related cancers," said Dr. Feng.

In work performed in collaboration with Thomas Look, M.D., at the Dana-Farber Cancer Institute, Dr. Feng is combining the power of zebrafish genetics with human clinical studies to hone in on potential genes of interest.

Using a fish strain that reliably develops T-cell lymphoma by two months of age, they identified a novel gene called DLST that is involved in metabolism and energy production in cells. Evidence from human cancer cell lines and patients indicate that abnormally high levels of the protein may be involved in the human disease as well.

Reducing DLST activity in the fish significantly delayed tumor progression and growth, suggesting it is a promising target for developing new therapies for ALL and LBL.


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Contact: Phyllis Edelman
pedelman@genetics-gsa.org
301-634-7302
Genetics Society of America
Source:Eurekalert

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