mitotic kinesin-like protein 2 (MKLP-2) inhibitor
CAS：57046-73-8
分子式：C16H11N3
分子量：245.28
纯度：98%
存储：Store at -20°C

Background:

Paprotrain is a cell-permeable inhibitor of the kinesin MKLP-2, inhibits the ATPase activity of MKLP-2 with an IC50 of 1.35 μM and a Ki of 3.36 μM and shows a moderate inhibition activity on DYRK1A with an IC50 of 5.5 μM.
Paprotrain has been screened on a panel of CNS kinases. While inactive (IC50 >10 μM) on CDK5 and GSK3, it has shown a moderate activity on DYRK1A (IC50=5.5 μM)[1]. Time-lapse microscopy shows that disrupting MKlp2 expression with paprotrain results in polar body extrusion failure. This could be rescued after rescuing oocytes from paprotrain in fresh medium. Cell cycle analysis shows that most oocytes are arrested at metaphase I or telophase I. However, oocyte spindle structure and chromosome alignment are not disrupted after the inhibition of MKlp2 by paprotrain[2]. Paprotrain-treated porcine oocytes suffer failure of nuclear maturation. The number of oocytes arrested at early MI stage increase in a dose-dependent manner after KIF20A activity inhibition, while the percentage of oocytes that reach ATI and MII stages decrease after treatment[3].
Reference：
[1]. Labrière C, et al. Further investigation of Paprotrain: Towards the conception of selective and multi-targeted CNS kinase inhibitors. Eur J Med Chem. 2016 Nov 29;124:920-934.
[2]. Liu J, et al. MKlp2 inhibitor paprotrain affects polar body extrusion during mouse oocyte maturation. Reprod Biol Endocrinol. 2013 Dec 21;11:117.
[3]. Zhang Y, et al. KIF20A regulates porcine oocyte maturation and early embryo development.
[4]. Tcherniuk S, et al. Relocation of Aurora?B and survivin from centromeres to the central spindle impaired by a kinesin-specific MKLP-2 inhibitor. Angew Chem Int Ed Engl. 2010 Oct 25;49(44):8228-31.