JOURNAL ARTICLE
REVIEW

A new approach to gene therapy using Sleeping Beauty to genetically modify clinical-grade T cells to target CD19

Harjeet Singh, Helen Huls, Partow Kebriaei, Laurence J N Cooper
Immunological Reviews 2014, 257 (1): 181-90
24329797
The advent of efficient approaches to the genetic modification of T cells has provided investigators with clinically appealing methods to improve the potency of tumor-specific clinical grade T cells. For example, gene therapy has been successfully used to enforce expression of chimeric antigen receptors (CARs) that provide T cells with ability to directly recognize tumor-associated antigens without the need for presentation by human leukocyte antigen. Gene transfer of CARs can be undertaken using viral-based and non-viral approaches. We have advanced DNA vectors derived from the Sleeping Beauty (SB) system to avoid the expense and manufacturing difficulty associated with transducing T cells with recombinant viral vectors. After electroporation, the transposon/transposase improves the efficiency of integration of plasmids used to express CAR and other transgenes in T cells. The SB system combined with artificial antigen-presenting cells (aAPC) can selectively propagate and thus retrieve CAR(+) T cells suitable for human application. This review describes the translation of the SB system and aAPC for use in clinical trials and highlights how a nimble and cost-effective approach to developing genetically modified T cells can be used to implement clinical trials infusing next-generation T cells with improved therapeutic potential.

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