Tagged chimeric effector molecules and receptors thereof
First Claim
1. A single chain fusion protein, comprising an extracellular component and an intracellular component connected by a hydrophobic portion,wherein the extracellular component comprises a plurality of tag cassettes and a connector region comprising a hinge,wherein the intracellular component comprises an effector domain, andwherein at least one of the plurality of tag cassettes comprises a peptide having a length of up to 20 amino acids that includes the amino acid sequence of SEQ ID NO.:
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Abstract
The present disclosure relates to tagged chimeric effector molecules and receptor molecules thereof for genetically engineering a host cell, wherein the recombinant host cell can be identified, isolated, sorted, induced to proliferate, tracked or eliminated using the tag. An exemplary receptor molecule is a chimeric antigen receptor (CAR) having an extracellular domain comprising a binding domain for a target, a hinge region, and a tag cassette, a hydrophobic portion as a transmembrane domain and an intracellular part with an effector domain. An exemplary target is CD19. An exemplary tag is a Strep Tag®. T cells recombinantly modified for expression of such molecules may be used in adoptive immunotherapy.
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Citations
31 Claims
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1. A single chain fusion protein, comprising an extracellular component and an intracellular component connected by a hydrophobic portion,
wherein the extracellular component comprises a plurality of tag cassettes and a connector region comprising a hinge, wherein the intracellular component comprises an effector domain, and wherein at least one of the plurality of tag cassettes comprises a peptide having a length of up to 20 amino acids that includes the amino acid sequence of SEQ ID NO.:
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18. A nucleic acid molecule encoding a single chain fusion protein, the encoded single chain fusion protein comprising an extracellular component and an intracellular component connected by a hydrophobic portion,
wherein the extracellular component comprises a plurality of tag cassettes and a connector region comprising a hinge, wherein the intracellular component comprises an effector domain, and wherein at one of the plurality of tag cassettes comprises a peptide having a length of up to 20 amino acids that includes the amino acid sequence of SEQ ID NO.:
Specification