Effect of P53 inhibitors and microtubule inhibitors on nuclear translocation of glucocorticoid receptor in psoriatic epidermal keratinocytes / 中国免疫学杂志

Objective:To investigate the effect of P53 inhibitors and microtubule inhibitors on nuclear translocation of glucocorticoid receptor in psoriatic epidermal keratinocytes.Methods: Isolate and culture psoriatic and normal epidermal keratinocytes.The keratinocytes were incubated with P53 inhibitors and microtubule inhibitors with or without vascular endothelial growth factor( VEGF) ,and then detected the distribution of GR by indirect immunofluorescence.Results:VEGF induced nuclear trans-location of GR in normal keratinocytes, and the P53 inhibitor restrained VEGF induced nuclear export of GR in normal keratinocytes.The nuclear translocation score of the keratinocytes cultured with VEGF was significantly lower than that of keratinocytes cultured without VEGF(P<0.05).The microtubule inhibitors could completely detained GR of normal epidermal keratinocytes in the cytoplasm,and there′s no significantly increased of the level of GR in the cytoplasm after putting VEGF into the normal epidermal kera-tinocytes.While the microtubule inhibitors and P53 inhibitors co-cultured, there will be a small amount of GR into the keratinocyte nuclei.Conclusion:Microtubule mediated uptake of GR,P53 participated nuclear export of GR.

Anti-Tumor mechanisms of microtubule inhibitors / 国际药学研究杂志

Microtubules are a type of dynamic filamentous cytoskeletal protein, and a major component of centrosome. The regular dynamic changes in microtubules are the guarantees of mitosis. Microtubule inhibitors can promote or inhibit tubulin assembly, interfere cell mitosis and the normal structure and function of the spindle, resulting in the inhibition of cell proliferation and tumor specific therapeutic effect. Microtubule inhibitors, targeting different sites, are the key components of chemotherapeutic regiments for various solid tumors, and dozens of microbule inhibitors are already available in market or under clinical study. Including a brief description of the progress in paclitaxel, vinblastine and colchicine, this review systematically introduces the mechanism of a class of microtubule inhibitors.

Anti-tumor mechanisms of microtubule inhibitors / 国际药学研究杂志

Microtubules are a type of dynamic filamentous cytoskeletal protein, and a major component of centrosome. The regular dynamic changes in microtubules are the guarantees of mitosis. Microtubule inhibitors can promote or inhibit tubulin assembly, interfere cell mitosis and the normal structure and function of the spindle, resulting in the inhibition of cell proliferation and tumor specific therapeutic effect. Microtubule inhibitors, targeting different sites, are the key components of chemotherapeutic regiments for various solid tumors, and dozens of microbule inhibitors are already available in market or under clinical study. Including a brief description of the progress in paclitaxel, vinblastine and colchicine, this review systematically introduces the mechanism of a class of microtubule inhibitors.