类器官Dexamethasone (DHAP)

类器官Dexamethasone (DHAP)

类器官（Organoids）是指将成体干细胞或多能干细胞在体外三维培养形成的具有一定空间结构的组织类似物。类器官在组织结构、细胞类型、自我更新能力和功能等方面与来源组织高度一致，从而在发育生物学、疾病造模、精准医学、药物研发、基因和细胞疗法、感染和免疫以及再生医学等生物医学的多个领域展现出*的优势。

产品介绍DESCRIPTION

技术参数BIOLOGICAL ALTIVITY
In Vitro   
Dexamethasone regulates several transcription factors, including activator protein-1, nuclear factor-AT, and nuclear factor-kB, leading to the activation and repression of key genes involved in the inflammatory response^[1].
Dexamethasone potently inhibits granulocyte-macrophage colony stimulating factor (GM-CSF) release from A549 cells with EC50 of 2.2 nM. Dexamethasone (EC50=36 nM) induces transcription of the β2-receptor is found to correlate with glucocorticoid receptor (GR) DNA binding and occurred at 10-100 fold higher concentrations than the inhibition of GM-CSF release. Dexamethasone (IC50=0.5 nM) inhibits a 3×κB (NF-κB, IκBα, and I-κBβ), which is associated with inhibition of GM-CSF release^[2].
In Vivo  
It has previously been reported that treatment with Dexamethasone at a dose of 2×5 mg/kg efficiently inhibits lipopolysaccharide (LPS)-induced inflammation. In our experimental system, treatment with a single dose of Dexamethasone 10 mg/kg (i.p.) significantly decreases recruitment of granulocytes as well as spontaneous production of oxygen radicals compared with animals expose to LPS and injected with solvent alone (saline). The effects are statistically significant when administered both 1 h before and 1 h after inhalation of LPS. The number of granulocytes in BALF decreased to levels comparable to healthy animals (given an aerosol of water)^[3].

类器官Dexamethasone (DHAP)