The two‐pore domain K2P channel TASK2 drives human NK‐cell proliferation and cytolytic function
The two‐pore domain K2P channel TASK2 drives human NK‐cell proliferation and cytolytic function
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两孔结构域K2P通道TASK2驱动人NK细胞增殖和溶细胞功能
DOI:
10.1002/eji.201445208
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发表时间:
2015
影响因子:
5.4
通讯作者:
Gross CC
中科院分区:
文献类型:
--
作者:
Schulte-Mecklenbeck A;Bittner S;Ehling P;Doring F;Wischmeyer E;Breuer J;Herrmann AM;Wiendl H;Meuth SG;Gross CC
Natural killer (NK) cells are a subset of cytotoxic lymphocytes that recognize and kill tumor‐ and virus‐infected cells without prior stimulation. Killing of target cells is a multistep process including adhesion to target cells, formation of an immunological synapse, and polarization and release of cytolytic granules. The role of distinct potassium channels in this orchestrated process is still poorly understood. The current study reveals that in addition to the voltage‐gated KV1.3 and the calcium‐activated KCa3.1 channels, human NK cells also express the two‐pore domain K2P channel TASK2 (TWIK‐related acid‐sensitive potassium channel). Expression ofTask2varies among NK‐cell subsets and depends on their differentiation and activation state. Despite its different expression in TASK2highCD56brightCD16−and TASK2lowCD56dimCD16+NK cells, TASK2 is involved in cytokine‐induced proliferation and cytolytic function of both subsets. TASK2 is crucial for leukocyte functional antigen (LFA‐1) mediated adhesion of both resting and cytokine‐activated NK cells to target cells, an early step in killing of target cells. With regard to the following mechanism, TASK2 plays a role in release of cytotoxic granules by resting, but not IL‐15‐induced NK cells. Taken together, our data exhibit two‐pore potassium channels as important players in NK‐cell activation and effector function.
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DOI:
10.1073/pnas.0601335103
发表时间:
2006-04-11
影响因子:
11.1
作者:
Bielekova, B;Catalfamo, M;Martin, R
通讯作者:
Martin, R
影响因子:
3.4
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Sukhorukov, Vladimir L.
影响因子:
4.4
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J. Schröder
DOI:
10.1016/s0006-291x(86)80533-2
发表时间:
1986
影响因子:
3.1
作者:
Sidell,N;Schlichter,L
通讯作者:
Schlichter,L
DOI:
10.1073/pnas.83.2.451
发表时间:
1986
影响因子:
11.1
作者:
L. Schlichter;N. Sidell;S. Hagiwara
通讯作者:
L. Schlichter;N. Sidell;S. Hagiwara