A Critical Role of GIT1 in Vertebrate and Invertebrate Brain Development

作者: Sung-Tae Hong , Won Mah

DOI: 10.5607/EN.2015.24.1.8

关键词:

摘要: GIT1, a multifunctional signaling adaptor protein, is implicated in the development of dendritic spines and neuronal synapses. GIT1 forms complex with PIX, RAC, PAK proteins that known to play important roles brain development. Here we found Git1-knockout (Git1-/-) mice show microcephaly-like small phenotype, which appears be caused by reduced size rather than number. Git1-/- also decreased spine number without morphological alterations hippocampus. Behaviorally, impaired motor coordination learning memory. In addition, adult dGit Drosophila mutants abnormal morphology mushroom body. These results suggest for both rodents flies.

参考文章(31)
Kristina M. Allen, Joseph G. Gleeson, Shubha Bagrodia, Michael W. Partington, John C. MacMillan, Richard A. Cerione, John C. Mulley, Christopher A. Walsh, PAK3 mutation in nonsyndromic X-linked mental retardation Nature Genetics. ,vol. 20, pp. 25- 30 ,(1998) , 10.1038/1675
Huaye Zhang, Donna J. Webb, Hannelore Asmussen, Alan F. Horwitz, Synapse formation is regulated by the signaling adaptor GIT1 Journal of Cell Biology. ,vol. 161, pp. 131- 142 ,(2003) , 10.1083/JCB.200211002
Jin Xiao, Xuqiong Chen, Lipeng Xu, Ying Zhang, Qingshui Yin, Fei Wang, Regulation of chondrocyte proliferation through GIT1-Rac1-mediated ERK1/2 pathway by PDGF Cell Biology International. ,vol. 38, pp. 695- 701 ,(2014) , 10.1002/CBIN.10241
Maarit Peippo, Anne M. Koivisto, Teppo Särkämö, Marjatta Sipponen, Harriet von Koskull, Tero Ylisaukko-oja, Karola Rehnström, Guy Froyen, Jaakko Ignatius, Irma Järvelä, PAK3 related mental disability: further characterization of the phenotype American Journal of Medical Genetics Part A. ,vol. 143, pp. 2406- 2416 ,(2007) , 10.1002/AJMG.A.31956
Inmaculada Segura, Clara L Essmann, Stefan Weinges, Amparo Acker-Palmer, Grb4 and GIT1 transduce ephrinB reverse signals modulating spine morphogenesis and synapse formation Nature Neuroscience. ,vol. 10, pp. 301- 310 ,(2007) , 10.1038/NN1858
Edward Manser, Louis Lim, Xiaohang Yang, Sami M. Bahri, Juliana M. Choy, The Drosophila homologue of Arf-GAP GIT1, dGIT, is required for proper muscle morphogenesis and guidance during embryogenesis Developmental Biology. ,vol. 325, pp. 15- 23 ,(2009) , 10.1016/J.YDBIO.2008.09.001
Ronald L. Davis, Mushroom bodies and drosophila learning Neuron. ,vol. 11, pp. 1- 14 ,(1993) , 10.1016/0896-6273(93)90266-T
Lei Chen, Jaime Melendez, Kenneth Campbell, Chia-Yi Kuan, Yi Zheng, Rac1 deficiency in the forebrain results in neural progenitor reduction and microcephaly. Developmental Biology. ,vol. 325, pp. 162- 170 ,(2009) , 10.1016/J.YDBIO.2008.10.023
Dorit Parnas, A.Pejmun Haghighi, Richard D Fetter, Sang W Kim, Corey S Goodman, Regulation of Postsynaptic Structure and Protein Localization by the Rho-Type Guanine Nucleotide Exchange Factor dPix Neuron. ,vol. 32, pp. 415- 424 ,(2001) , 10.1016/S0896-6273(01)00485-8
Huaye Zhang, Donna J Webb, Hannelore Asmussen, Shuang Niu, Alan F Horwitz, A GIT1/PIX/Rac/PAK Signaling Module Regulates Spine Morphogenesis and Synapse Formation through MLC The Journal of Neuroscience. ,vol. 25, pp. 3379- 3388 ,(2005) , 10.1523/JNEUROSCI.3553-04.2005