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Researchers Receive >$2 Million to Eradicate Common Type of Leukemia

Researchers Receive >$2 Million to Eradicate Common Type of Leukemia

Researchers Receive >$2 Million to Eradicate Common Type of Leukemia

Researchers Receive >$2 Million to Eradicate Common Type of Leukemia

The new research will be led by Christoph Rader (left) with Hans Renata (right) and William Roush (not pictured). Credit: Scott Wiseman
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Christoph Rader, PhD, associate professor at the Florida campus of The Scripps Research Institute, has been awarded a $2.875 million, five-year grant from the National Cancer Institute to develop unique antibody-drug conjugates engineered to eradicate one of the most common forms of leukemia, chronic lymphocytic leukemia (CLL).

“We want to attack the cancer without harming healthy cells and tissues,” Rader says. “To do this, we attach a highly potent drug to an antibody and then use the antibody to lead the drug payload to the cellular target.”

Doctors diagnose more than 20,000 people a year in the United States with chronic lymphocytic leukemia. The blood cancer originates in a type of white blood cells called lymphocytes, born in bone marrow. As the condition worsens over time, the cancerous cells accumulate, crowding out healthy blood cells. When they move into the blood stream, the malignant cells can spread to other organs and disrupt their healthy function. The illness can cause fatigue, fever and infections, swelling of the lymph nodes and weight loss. More than 4,500 people die each year of CLL in the United States.

The central challenge in fighting all cancers is attacking the malignancy without hurting other parts of the body. Antibodies, the immune system’s adaptable targeting system, recognize and bind to specific threats. Using them to attack cancer requires designing ways to attach drug payloads, and then identifying ideal points of attack. Rader’s team discovered a binding site on the surface of CLL lymphocytes, called FCMR, which pulls antibodies into the cells in a matter of minutes.

“This particular target is selectively expressed in CLL,” Rader says, which means antibodies that bind to the cancer won’t attack other, healthy cells.

Attaching the drug payload to the antibody requires a third element, a linking molecule. Working with Scripps Research chemists, including Assistant Professor Hans Renata, PhD, and Professor Emeritus William Roush, PhD, Rader’s group has devised several approaches that perform well.

“This draws on the unique interface of biology and chemistry we have here at Scripps Florida. We are creating new molecules with precise designs that are now able to selectively target CLL cells,” Rader says. “There is a dire need for the development of new, effective and safe therapies against chronic lymphocytic leukemia.”

This article has been republished from materials provided by The Scripps Research Institute. Note: material may have been edited for length and content. For further information, please contact the cited source.