Induced CD45 Proximity Potentiates Natural Killer Cell Receptor Antagonism.
Induced CD45 Proximity Potentiates Natural Killer Cell Receptor Antagonism.
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DOI:
10.1021/acssynbio.2c00337
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发表时间:
2022-10-21
影响因子:
4.7
通讯作者:
Garcia, K. Christopher
中科院分区:
文献类型:
--
作者:
Ren, Junming;Jo, Yeara;Picton, Lora K.;Su, Leon L.;Raulet, David H.;Garcia, K. Christopher
Natural killer (NK) cells are a major subset of innate immune cells that are essential for host defense against pathogens and cancer. Two main classes of inhibitory NK receptors (NKR), KIR and CD94/NKG2A, play a key role in suppressing NK activity upon engagement with tumor cells or virus-infected cells, limiting their antitumor and antiviral activities. Here, we find that single-chain NKR antagonists linked to a VHH that binds the cell surface phosphatase CD45 potentiate NK and T activities to a greater extent than NKR blocking antibodies alone in vitro. We also uncovered crosstalk between NKG2A and Ly49 that collectively inhibit NK cell activation, such that CD45–NKG2A and CD45–Ly49 bispecific molecules show synergistic effects in their ability to enhance NK cell activation. The basis of the activity enhancement by CD45 ligation may reflect greater antagonism of inhibitory signaling from engagement of MHC I on target cells, combined with other mechanisms, including avidity effects, tonic signaling, antagonism of weak inhibition from engagement of MHC I on non-target cells, and possible CD45 segregation within the NK cell-target cell synapse. These results uncover a strategy for enhancing the activity of NK and T cells that may improve cancer immunotherapies.
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DOI:
10.1084/jem.185.4.795
发表时间:
1997-02-17
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Brooks AG;Posch PE;Scorzelli CJ;Borrego F;Coligan JE
通讯作者:
Coligan JE
影响因子:
30.5
作者:
Chang VT;Fernandes RA;Ganzinger KA;Lee SF;Siebold C;McColl J;Jönsson P;Palayret M;Harlos K;Coles CH;Jones EY;Lui Y;Huang E;Gilbert RJC;Klenerman D;Aricescu AR;Davis SJ
通讯作者:
Davis SJ
影响因子:
64.5
作者:
André P;Denis C;Soulas C;Bourbon-Caillet C;Lopez J;Arnoux T;Bléry M;Bonnafous C;Gauthier L;Morel A;Rossi B;Remark R;Breso V;Bonnet E;Habif G;Guia S;Lalanne AI;Hoffmann C;Lantz O;Fayette J;Boyer-Chammard A;Zerbib R;Dodion P;Ghadially H;Jure-Kunkel M;Morel Y;Herbst R;Narni-Mancinelli E;Cohen RB;Vivier E
通讯作者:
Vivier E
影响因子:
4.8
作者:
Burshtyn, DN;Yang, WT;Long, EO
通讯作者:
Long, EO
影响因子:
56.9
作者:
Leach, DR;Krummel, MF;Allison, JP
通讯作者:
Allison, JP