* The GPR171 pathway suppresses T cell activation and limits antitumor immunity.
- The recently identified G-protein-coupled receptor GPR171 and its ligand BigLEN are thought to regulate food uptake and anxiety. Though GPR171 is commonly used as a T cell signature gene in transcriptomic studies, its potential role in T cell immunity has not been explored. Here we show that GPR171 is transcribed in T cells and its protein expression is induced upon antigen stimulation. The neuropeptide ligand BigLEN interacts with GPR171 to suppress T cell receptor-mediated signalling pathways and to inhibit T cell proliferation. Loss of GPR171 in T cells leads to hyperactivity to antigen stimulation and GPR171 knockout mice exhibit enhanced antitumor immunity. Blockade of GPR171 signalling by an antagonist promotes antitumor T cell immunity and improves immune checkpoint blockade therapies. Together, our study identifies the GPR171/BigLEN axis as a T cell checkpoint pathway that can be modulated for cancer immunotherapy.
=>密室, 細胞, 電池, 独房・細胞, 監房, 組織, 独房
Overview of noun cell
The noun cell has 7 senses (first 3 from tagged texts)
1. (71) cell -- (any small compartment; "the cells of a honeycomb")
2. (44) cell -- ((biology) the basic structural and functional unit of all organisms; they may exist
as independent units of life (as in monads) or may form colonies or tissues as in higher plants and
animals)
3. (1) cell, electric cell -- (a device that delivers an electric current as the result of a
chemical reaction)
4. cell, cadre -- (a small unit serving as part of or as the nucleus of a larger political movement)
5. cellular telephone, cellular phone, cellphone, cell, mobile phone -- (a hand-held mobile
radiotelephone for use in an area divided into small sections, each with its own short-range
transmitter/receiver)
6. cell, cubicle -- (small room in which a monk or nun lives)
7. cell, jail cell, prison cell -- (a room where a prisoner is kept)
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