Dioxin-induced adseverin expression in the mouse thymus is strictly regulated and dependent on the aryl hydrocarbon receptor.

Dioxin-induced adseverin expression in the mouse thymus is strictly regulated and dependent on the aryl hydrocarbon receptor.
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二恶英诱导的小鼠胸腺中的阿德维林表达受到严格调节并依赖于芳烃受体。

DOI:
10.1006/bbrc.2002.6582
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发表时间:
2002
影响因子:
3.1
通讯作者:
Lundberg,Katarina
Lundberg,Katarina
中科院分区:
生物学4区
文献类型:
--
作者:
Svensson,Camilla;Silverstone,AllenE;Lai,Zhi-Wei;Lundberg,Katarina

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2,3,7,8-四氯二苯并-对-二恶英(TCDD)是普遍存在的细胞内芳烃受体(AhR)的配体,上调小鼠淋巴组织中的肌动蛋白调节蛋白adseverin,这一反应可能与TCDD的免疫毒性相关。在这里,通过使用嵌合小鼠与TCDD-反应(AhR+/+)造血细胞和TCDD-反应(AhR-/-)胸腺基质,或相反,我们表明,TCDD诱导的胸腺中adseverin的表达是依赖于造血细胞中的AhR表达,但不是在基质。胎儿胸腺器官培养物的使用也表明TCDD诱导的adseverin表达仅限于胸腺细胞。胸腺基质显示没有诱导adseverin的表达后,TCDD曝光,虽然TCDD明确激活AhR在这些细胞中,所示的诱导CYP 1A 1。正常成年C57 BL/6小鼠暴露于β-雌二醇或地塞米松(也可导致胸腺萎缩的两种药物)后,其胸腺中未诱导Adseverin。这进一步支持adseverin诱导是TCDD对胸腺细胞的特异性基因调节作用。
2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD), a ligand for the ubiquitous, intracellular aryl hydrocarbon receptor (AhR), up-regulates the actin-modulating protein adseverin in mouse lymphoid tissues, a response that may be correlated to the immunotoxicity of TCDD. Here, by using chimeric mice with TCDD-responsive (AhR+/+) hematopoietic cells and TCDD-unresponsive (AhR−/−) thymic stroma, or the reverse, we show that TCDD-induced expression of adseverin in thymus is dependent on AhR expression in hematopoietic cells but not in stroma. The use of fetal thymic organ cultures also indicates that TCDD-induced expression of adseverin is confined to the thymocytes. The thymic stroma showed no induction of adseverin expression after TCDD exposure, although TCDD clearly activated the AhR in these cells, as indicated by the induction of CYP1A1. Adseverin was not induced in the thymus of normal adult C57BL/6 mice exposed to β-estradiol or dexamethasone, two other agents, which also cause thymic atrophy. This further supports that adseverin induction is a specific gene regulatory effect by TCDD on thymocytes.
DOI: 10.1083/jcb.113.5.1057
发表时间: 1991-06
期刊: The Journal of cell biology
影响因子: --
作者:
Vitale ML;Rodríguez Del Castillo A;Tchakarov L;Trifaró JM
通讯作者: Trifaró JM
2,3,7,8-四氯二苯并-对-二恶英 (TCDD) 会改变小鼠胸腺内 T 细胞的发育。
DOI: --
发表时间: 1990
影响因子: 5.1
作者:
K. Lundberg;K. Grönvik;T. Goldschmidt;L. Klareskog;L. Dencker
通讯作者: L. Dencker
DOI: 10.1126/science.3262923
发表时间: 1988-10-14
期刊: SCIENCE
影响因子: 56.9
作者:
MCCONKEY, DJ;HARTZELL, P;ORRENIUS, S
通讯作者: ORRENIUS, S
地塞米松和2,3,7,8-四氯二苯并-对二恶英可通过不同机制诱导小鼠胸腺萎缩。
DOI: --
发表时间: 1991
期刊: Biochemical and Biophysical Research Communications - BBRC
影响因子: --
作者:
K. Lundberg
通讯作者: K. Lundberg
胸腺中抗凋亡癌基因 bcl-2 的过度表达并不能阻止雌二醇或 2,3,7,8-四氯二苯并-对二恶英诱导的胸腺萎缩。
DOI: 10.1006/taap.1998.8446
发表时间: 1998
影响因子: 3.8
作者:
Staples,JE;Fiore,NC;FrazierJr,DE;Gasiewicz,TA;Silverstone,AE
通讯作者: Silverstone,AE