All trans-retinoic acid (ATRA) is widely used to direct the differentiation of cultured stem cells. When exposed to the pluripotent human embryonal carcinoma (EC) stem cell line, TERA2.cl.SP12, ATRA induces ectoderm differentiation and the formation of neuronal cell types. We report in this study that novel polyene chain length analogues of ATRA require a specific chain length to elicit a biological responses of the EC cells TERA2.cl.SP12, with synthetic retinoid AH61 being particularly active, and indeed more so than ATRA. The impacts of both the synthetic retinoid AH61 and natural ATRA on the TERA2.cl.SP12 cells were directly compared using both RT-PCR and Fourier Transform Infrared Micro-Spectroscopy (FT-IRMS) coupled with multivariate analysis. Analytical results produced from this study also confirmed that the synthetic retinoid AH61 had biological activity comparable or greater than that of ATRA. In addition to this, AH61 has the added advantage of greater compound stability than ATRA, therefore, avoiding issues of oxidation or decomposition during use with embryonic stem cells.
全反式
视黄酸(A
TRA)广泛用于指导培养的干细胞分化。当暴露于多能性人胚胎癌(
EC)干
细胞系TERA2.cl.
SP12时,A
TRA诱导外胚层分化和神经细胞类型的形成。本研究报告了新型多烯链长类似物A
TRA需要特定的链长才能引起
EC细胞TERA2.cl.
SP12的
生物学反应,其中合成
视黄酸AH61特别活跃,实际上比A
TRA更活跃。通过RT-PCR和傅里叶变换红外显微光谱(FT-IRMS)结合多元分析,直接比较了合成
视黄酸AH61和天然A
TRA对TERA2.cl.
SP12细胞的影响。本研究的分析结果也证实,合成
视黄酸AH61具有与A
TRA相当或更高的
生物活性。此外,AH61相对于A
TRA具有化合物稳定性更高的优势,因此在使用过程中避免了氧化或分解的问题。