Scientists develop artificial chemical receptor to assist viral transduction for T cell engineering

phys.org | 2/14/2017 | Staff
tiana_101 (Posted by) Level 3
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Engineered T cell immunotherapy, such as chimeric antigen receptor T cell (CAR-T) and T cell receptor T cell (TCR-T) therapy, has emerged as a potent therapeutic strategy for treating tumors.

However, the genetic manipulation of primary T cells remains inefficient, especially during the clinical manufacturing process. There's an urgent need to develop a reliable method for the preparation of engineered T cells.

Research - Team - Prof - Cai - Lintao

A research team led by Prof. Cai Lintao at the Shenzhen Institutes of Advanced Technology (SIAT) of the Chinese Academy of Sciences and other collaborators developed a "safe, efficient and universal" technique based on bioorthogonal chemistry and glycol-metabolic labeling for viral-mediated engineered T cell manufacturing. Their findings were published in Advanced Functional Materials.

In this strategy, the functional azide motifs were anchored on T cell surfaces via the intrinsic glycometabolism of exogenous azide-glucose, thus serving as an artificial ligand for viral binding. The complementary functional moiety dibenzocyclooctyne (DBCO)/-conjugated PEI1.8K (PEI-DBCO) was coated on the lentiviral surface, which strengthened the virus-T cell interaction through DBCO/azide bioorthogonal chemistry.

Chemical - Receptor - Binding - T - Cells

"We found that this artificial chemical receptor effectively facilitated viral binding to T cells and elevated the transduction efficiency of the lentivirus from 20 percent to 80 percent without any effect on T cell proliferation and...
(Excerpt) Read more at: phys.org
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