Gamma 9 delta 2 T cell receptors
AssigneeGadeta B.V.
InventorsJürgen Herbert Ernst Kuball, Elsa-Cordula Gründer
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AssigneeGadeta B.V.
InventorsJürgen Herbert Ernst Kuball, Elsa-Cordula Gründer
Estimating the term…
The current invention provides methods to identify γ9δ2T-cell receptors (γ9δ2TCR) that mediate anti-tumor responses. Surprisingly, it was now found that the CDR3 regions of the γ9-T-cell receptor chain and the δ2-T-Cell receptor chain (δ2TCR chain) are of importance. Based on these findings, combinatorial-γδTCR-chain-exchange (CTE) is proposed as an efficient method for identifying γ9δ2TCRs that mediate anti-tumor responses. Using the method of the invention, specific sequences of the respective γ9TCR and δ2TCR chains were identified that mediate anti-tumor responses. Hence, the invention further provides for specific γ9δ2TCRs, or fragments thereof, that may be used e.g. in diagnostics or treatment of cancer. The invention further provides for nucleic acid sequences, genetic constructs and retroviral vectors that can be used to express the γ9δ2TCRs according to the invention.
A γ9δ2T-cell receptor, or a fragment thereof, comprising a γ9-T-cell receptor chain comprising a γ9-CDR3 region, wherein the amino acid sequence of the γ9-CDR3 region corresponding to amino acid residues 122-124 of SEQ ID NO. 1 is IQ (SEQ ID NO. 20) and a δ2-T-cell receptor chain comprising a δ2-CDR3 region wherein the amino acid sequence of the δ2-CDR3 region corresponding to amino acid residues 115-122 of SEQ ID NO. 2 is ALKRTD (SEQ ID NO. 15).
A γ9δ2T-cell receptor, or a fragment thereof, comprising:
A medicament comprising one selected from the group consisting of:
A γ9δ2T-cell receptor, or a fragment thereof, comprising a γ9-T-cell receptor chain comprising a γ9-CDR3 region, wherein the amino acid sequence of the γ9-CDR3 region corresponding to amino acid residues 122-124 of SEQ ID NO. 1 is modified and a δ2-T-cell receptor chain comprising a δ2-CDR3 region wherein the amino acid sequence of the δ2-CDR3 region corresponding to amino acid residues 115-122 of SEQ ID NO. 2 is modified, wherein the combinations of the amino acid modifications within the γ9δ2T-cell receptor, or a fragment thereof, are as listed in Table 1.
Dependencies are inferred from the claim text.