Difference between revisions of "Part:BBa K4040016"

 
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<partinfo>BBa_K4040016 short</partinfo>
 
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===Structure and function of the CARγ===
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Researchers have identified that the common γ subunit of Fc receptors (FcRγ) have the potential ability to enhance the phagocytosis efficiency of the macrophages. We consequently constructed a chimeric antigen receptor containing the critical function domain of the FcRγ, expecting the permitting function of the FcRγ. There are three parts in our CAR, an αS-scFv extracellular domain targeting the spike(S) protein of the SARS-CoV-2, a CD8 hinge and a CD8 transmembrane domain presented in the αCD19 CAR for T cells permitting the signal transduction, a intracellular domain with the same structure of the FcRγ for the enhancement of the phagocytosis efficiency.
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===The mechanism of the CARγ===
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The function domain of the CARγ mainly lies in the intracellular domain, namely the cytosolic Immunoreceptor Tyrosine-based Activation Motifs (ITAMs). The cytosolic Immunoreceptor Tyrosine-based Activation Motifs (ITAMs) in the intracellular domain of the CARγ will be phosphorylated by Src family kinases when the CARγ is stimulated by its ligands S protein. The expression of S protein on the surface of SARS-CoV-2 is actually a strong stimulus of CARγ-macrophages. The activated Immunoreceptor Tyrosine-based Activation Motifs (ITAMs) will expose the SH2 binding domains for the SH2 matching domain. And the SH2 matching domain contains the kinase ZAP70 and the Syk in the T cells and the macrophages respectively. Protein Syk, a phagocytic signaling effector can then active the downstream signaling transduction cascades and initiate the phagocytosis in our CARγ-macrophages eventually.
  
 
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<span class='h3bb'>Sequence and Features</span>
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===Sequence and Features===
 
<partinfo>BBa_K4040016 SequenceAndFeatures</partinfo>
 
<partinfo>BBa_K4040016 SequenceAndFeatures</partinfo>
  

Revision as of 09:40, 21 September 2021


Synthetic Receptor CARγ

Structure and function of the CARγ

Researchers have identified that the common γ subunit of Fc receptors (FcRγ) have the potential ability to enhance the phagocytosis efficiency of the macrophages. We consequently constructed a chimeric antigen receptor containing the critical function domain of the FcRγ, expecting the permitting function of the FcRγ. There are three parts in our CAR, an αS-scFv extracellular domain targeting the spike(S) protein of the SARS-CoV-2, a CD8 hinge and a CD8 transmembrane domain presented in the αCD19 CAR for T cells permitting the signal transduction, a intracellular domain with the same structure of the FcRγ for the enhancement of the phagocytosis efficiency.

The mechanism of the CARγ

The function domain of the CARγ mainly lies in the intracellular domain, namely the cytosolic Immunoreceptor Tyrosine-based Activation Motifs (ITAMs). The cytosolic Immunoreceptor Tyrosine-based Activation Motifs (ITAMs) in the intracellular domain of the CARγ will be phosphorylated by Src family kinases when the CARγ is stimulated by its ligands S protein. The expression of S protein on the surface of SARS-CoV-2 is actually a strong stimulus of CARγ-macrophages. The activated Immunoreceptor Tyrosine-based Activation Motifs (ITAMs) will expose the SH2 binding domains for the SH2 matching domain. And the SH2 matching domain contains the kinase ZAP70 and the Syk in the T cells and the macrophages respectively. Protein Syk, a phagocytic signaling effector can then active the downstream signaling transduction cascades and initiate the phagocytosis in our CARγ-macrophages eventually.

Sequence and Features


Assembly Compatibility:
  • 10
    COMPATIBLE WITH RFC[10]
  • 12
    COMPATIBLE WITH RFC[12]
  • 21
    INCOMPATIBLE WITH RFC[21]
    Illegal XhoI site found at 344
  • 23
    COMPATIBLE WITH RFC[23]
  • 25
    INCOMPATIBLE WITH RFC[25]
    Illegal NgoMIV site found at 952
    Illegal NgoMIV site found at 1288
    Illegal NgoMIV site found at 1825
    Illegal NgoMIV site found at 1891
    Illegal NgoMIV site found at 2050
    Illegal NgoMIV site found at 2899
    Illegal NgoMIV site found at 3058
    Illegal AgeI site found at 440
  • 1000
    INCOMPATIBLE WITH RFC[1000]
    Illegal BsaI.rc site found at 1168
    Illegal BsaI.rc site found at 1432
    Illegal BsaI.rc site found at 2779
    Illegal BsaI.rc site found at 3340
    Illegal BsaI.rc site found at 3349
    Illegal SapI.rc site found at 1989
    Illegal SapI.rc site found at 3297