美国西雅图儿童研究所Kathleen J. Millen团队研究发现发育中的人类小脑初级祖区的时空扩展。这一研究成果2019年10月17日在线发表于《科学》杂志。

他们提出了从受孕后30天到出生后9个月的人类小脑的组织学和分子分析。人与小鼠之间的发育方式差异包括脑室和菱形唇初级祖细胞区域的时空扩展，以包括含有基底祖细胞的脑室下区域。通过小脑发育，人的菱形唇比在小鼠中持续存在更长的时间，并经历形态变化以在后小叶中形成祖细胞集合，这在其他生物体中甚至在非人类灵长类猕猴中都没有看到。

人菱形唇的发育受阻与小脑后小脑蚓体发育不全和丹迪-沃克畸形有关。 这些特定物种的神经祖细胞的存在完善了我们对人类小脑发育障碍的认识。

附：英文原文

Title: Spatiotemporal expansion of primary progenitor zones in the developing human cerebellum

Author: Parthiv Haldipur, Kimberly A. Aldinger, Silvia Bernardo, Mei Deng, Andrew E. Timms, Lynne M. Overman, Conrad Winter, Steven N. Lisgo, Ferechte Razavi, Evelina Silvestri, Lucia Manganaro, Homa Adle-Biasette, Fabien Guilmiot, Rosa Russo, Debora Kidron, Patrick R. Hof, Dianne Gerrelli, Susan J. Lindsay, William B. Dobyns, Ian A. Glass, Paula Alexandre, Kathleen J. Millen

Issue&Volume: 2019/10/17

Abstract: 

We present histological and molecular analyses of the developing human cerebellum from 30 days after conception to 9 months after birth. Differences in developmental patterns between humans and mice include spatiotemporal expansion of both ventricular and rhombic lip primary progenitor zones to include subventricular zones containing basal progenitors. The human rhombic lip persists longer through cerebellar development than in the mouse and undergoes morphological changes to form a progenitor pool in the posterior lobule, which is not seen in other organisms, not even in the nonhuman primate, the macaque. Disruptions in human rhombic lip development are associated with posterior cerebellar vermis hypoplasia and Dandy-Walker malformation. The presence of these species-specific neural progenitor populations refines our insight into human cerebellar developmental disorders.

DOI: 10.1126/science.aax7526

Source: https://science.sciencemag.org/content/early/2019/10/16/science.aax7526