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Identification of anti-ErbB2 dual variable domain immunoglobulin (DVD-Ig™) proteins with unique activities.


ABSTRACT: Inhibiting ErbB2 signaling with monoclonal antibodies (mAbs) or small molecules is an established therapeutic strategy in oncology. We have developed anti-ErbB2 Dual Variable Domain Immunoglobulin (DVD-Ig) proteins that capture the function of a combination of two anti-ErbB2 antibodies. In addition, some of the anti-ErbB2 DVD-Ig proteins gain the new functions of enhancing ErbB2 signaling and cell proliferation in N87 cells. We further found that two DVD-Ig proteins, DVD687 and DVD688, have two distinct mechanisms of actions in Calu-3 and N87 cells. DVD687 enhances cell cycle progression while DVD688 induces apoptosis in N87 cells. Using a half DVD687, we found that avidity may play a key role in the agonist activity of DVD687 in N87 cells.

SUBMITTER: Gu J 

PROVIDER: S-EPMC4019538 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature

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Identification of anti-ErbB2 dual variable domain immunoglobulin (DVD-Ig™) proteins with unique activities.

Gu Jinming J   Yang Jinsong J   Chang Qing Q   Lu Xiaoqing X   Wang Jieyi J   Chen Mingjiu M   Ghayur Tariq T   Gu Jijie J  

PloS one 20140513 5


Inhibiting ErbB2 signaling with monoclonal antibodies (mAbs) or small molecules is an established therapeutic strategy in oncology. We have developed anti-ErbB2 Dual Variable Domain Immunoglobulin (DVD-Ig) proteins that capture the function of a combination of two anti-ErbB2 antibodies. In addition, some of the anti-ErbB2 DVD-Ig proteins gain the new functions of enhancing ErbB2 signaling and cell proliferation in N87 cells. We further found that two DVD-Ig proteins, DVD687 and DVD688, have two  ...[more]

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