| 生物活性 | |||
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| 靶点 | 
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| 描述 | The histamine H4 receptor (H4R) is a completely novel fourth member of the histamine receptor family. There is a fairly selective expression of H4R on bone marrow and hematopoietic cells known to be involved in inflammatory and immune responses [3]. JNJ-7777120 is an effective and selective non-imidazole histamine H4 receptor antagonist with Ki value of 4.5 nM [4]. JNJ-7777120 has an oral bioavailability of approximately 30% in rats and 100% in dogs, with a half-life of approximately 3 h in both species. In mouse bone marrow-derived mast cells, JNJ-7777120 blocks histamine-induced chemotaxis and calcium influx. Furthermore, it can block the histamine-induced migration of tracheal mast cells from the connective tissue toward the epithelium in mice. In a mouse zymosan-induced peritonitis model which is reported to be mast cell-dependent, JNJ-7777120 significantly blocks neutrophil infiltration suggesting that its effect may be mediated by mast cells[5]. | ||
| 实验方案 | |||
|---|---|---|---|
| 1mg | 5mg | 10mg | |
| 1 mM 5 mM 10 mM | 3.60mL 0.72mL 0.36mL | 18.00mL 3.60mL 1.80mL | 36.00mL 7.20mL 3.60mL | 
| 参考文献 | 
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| [3]Thurmond RL. The histamine H4 receptor: from orphan to the clinic. Front Pharmacol. 2015;6:65. |