Diminished teratogenicity of retinoid X receptor-selective synthetic retinoids.

Diminished teratogenicity of retinoid X receptor-selective synthetic retinoids.
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类视黄醇 X 受体选择性合成类视黄醇的致畸性降低。

DOI:
10.1016/0006-2952(95)00183-z
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发表时间:
1995
影响因子:
5.8
通讯作者:
Kochhar,DM
Kochhar,DM
中科院分区:
医学2区
文献类型:
--
作者:
Jiang,H;Penner,JD;Beard,RL;Chandraratna,RA;Kochhar,DM

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禁止广泛使用维甲酸的一个特征是其致畸性。合成类视色素基于它们在全反式视黄酸受体(RAR)或类视色素X受体(RXR)的结合和活化中的部分或排他性偏好而彼此区分。使用小鼠胚胎肢芽细胞在微团培养作为生物测定,我们研究了一些标准的和新的类维生素A对软骨细胞分化的抑制活性。HeLa细胞的瞬时共转染用于测量每种类维生素A通过激活RAR或、RARβ、RARγ或RXRα嵌合构建体诱导报告基因转录的能力。在这项研究中,所有类维生素A在共转染试验中以任何程度激活RAR,也抑制体外软骨形成,而对RXR具有特异性或在共转染试验中无活性的类维生素A则没有。共转染试验中RAR选择性激动剂的活性和RXR特异性激动剂的无活性与妊娠ICR小鼠在第11天口服给药时研究的6种代表性类维生素A的相对致畸性相关。
One feature that contraindicates the wide therapeutic use of retinoids is their teratogenicity. Synthetic retinoids are distinguishable from each other on the basis of their partial or exclusive preference in binding and activation of all-trans retinoic acid receptors (RARs) or retinoid X receptors (RXRs). Using mouse embryo limb bud cells in micromass cultures as a bioassay, we examined the inhibitory activities of a number of standard and novel retinoids on chondrogenic cell differentiation. Transient cotransfection of HeLa cells was used to measure the ability of each retinoid to induce transcription of a reporter gene by activating RARor, RARβ, RARγ, or RXRα- chimeric constructs. All retinoids in this study that activated RARs to any degree in the cotransfection assay also inhibited chondrogenesis in vitro, whereas retinoids that were either specific for RXR or inactive in the cotransfection assay did not. The activity of RAR-selective agonists and the inactivity of RXR-specific agonists in the cotransfection assay correlated well with the relative teratogenicity of six of the representative retinoids studied when orally administered at day 11 to pregnant ICR mice.
DOI: 10.1016/0307-4412(93)90073-9
发表时间: 1993
期刊: Biochemical Education
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作者:
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发表时间: 1994
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DOI: --
发表时间: 1994
期刊:
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DOI: 10.1002/tera.1420450608
发表时间: 1992
期刊: Teratology
影响因子: --
作者:
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通讯作者: Penner,JD
DOI: 10.1006/scel.1994.1015
发表时间: 1994-01-01
期刊: Seminars in Cell Biology
影响因子: --
作者:
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通讯作者: Chambon, Pierre