Empowered Patient Podcast Leveraging Antibody Phage Display Library to Generate Unique Bispecific Antibodies for Solid Tumors with Dr. Jeng Her AP Biosciences
Dr. Jeng Her, Founder and CEO of AP Biosciences, is developing T-Cube bispecific antibodies that can target cancer cells and engage T-cells to kill them more effectively and safely than existing treatments. The company is focused on treating hard-to-treat cancers such as HER2-positive breast cancer, lung cancer, head and neck cancer, and pancreatic cancer. The T-Cube bispecific antibodies use CD137 instead of CD3 to activate T-cells, which can lead to better efficacy and safety compared to other T-cell engager antibodies.
Jeng explains, "So why not just take two, let's say, monospecific antibodies and then put them together and give them to the patient in the combination therapy? Instead, we wanted to develop bispecific antibodies by fusing two antibodies together into one single molecule. So what's the advantage? Eventually, what it comes down to is the therapeutic window of bispecific antibodies. This means you want your antibodies, your bispecific, to have better efficacy, better safety, and sometimes lower cost of goods since you are only expressing or producing one single drug molecule. So, the way we look at bispecific and the real advantage is not just the additive effect. It's not even the synergistic effect, which means we would like our bispecific antibodies to do something combination therapy cannot do. And that's the value of our bispecific antibodies."
"Basically, we have two technology platforms. The first one is an antibody phage display library. We call it Omni-mAb. This library is a live library, which means it has more than 100 billion antibody sequences. That's a collection of the 100 billion sequences. And whatever antigen, whatever conformation of the structure of antigens you have, you could isolate a very high-affinity antibody from the library in probably 4-6 weeks."
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