Name: inducing cre-lox recombination in mouse cerebral cortex through in utero electroporation
Uploaded: 2017-11-17T15:00:00
Description: Watch this Scientific Journal Video about Inducing Cre-lox Recombination in Mouse Cerebral Cortex Through In Utero Electroporation at JoVE.com

作者感谢詹姆斯麦迪逊大学生物学系和詹姆斯麦迪逊大学光显微镜和成像设施的慷慨支持。Dr. 马克 l. 加布里埃尔关于年轻的产后组织准备的有用建议,和 Drs. 贾斯汀 w. 布朗和科里. 克莱兰德为外科手术材料和空间的慷慨协调。这项研究部分由 4 VA 合作研究基金资助, 这是一个促进弗吉尼亚联邦 (G.S.V.) 的合作伙伴关系, 以及弗吉尼亚科学院小项目研究补助金 (G.S.V.)。支持已慷慨提供的贝蒂祖爱管家58的本科研究奖学金 (K.M.B.), 法雷尔暑期研究奖学金 (K.M.B.), 詹姆斯麦迪逊大学第二世纪奖学金 (K.M.B.), 詹姆斯麦迪逊大学百年奖学金 (到 C.J.H.), 詹姆斯麦迪逊大学露西鲁宾逊查寻30纪念奖学金 (对 Z.L.H.) 和詹姆斯麦迪逊大学科学和数学学院协助津贴 (对 G.S.V.)。

这里描述的方法已经得到了詹姆斯麦迪逊大学动物护理和使用委员会 (ACUC) 的批准, 并符合所有相关的法规和机构准则。
1. 鼠标设置
<ol><li>房子一个年轻的 (> P60) 男性和女性合 floxed 小鼠一起建立一个饲养员对25。 注意: 一个好的负控制是建立一个额外的增殖对野生小鼠, 其中综合重组表达不会导致马赛克26。</li>
	<li>让雌鸟生下她的头, ?...

<ol>
	<li>Southwell, D. G., Froemke, R. C., Alvarez-Buylla, A., Stryker, M. P., Gandhi, S. P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Cortical+plasticity+induced+by+inhibitory+neuron+transplantation.">Cortical plasticity induced by inhibitory neuron transplantation.</a> Science. 327 (5969), 1145-1148 (2010).</li><li>Hanson, J. E., Madison, D. V. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Presynaptic+FMR1+genotype+influences+the+degree+of+synaptic+connectivity+in+a+mosaic+mouse+model+of+fragile+X+syndrome.">Presynaptic FMR1 genotype influences the degree of synaptic connectivity in a mosaic mouse model of fragile X syndrome.</a> J. Neurosci. 27 (15), 4014-4018 (2007).</li><li>Patel, A. B., Hays, S. A., Bureau, I., Huber, K. M., Gibson, J. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+Target+Cell-Specific+Role+for+Presynaptic+Fmr1+in+Regulating+Glutamate+Release+onto+Neocortical+Fast-Spiking+Inhibitory+Neurons.">A Target Cell-Specific Role for Presynaptic Fmr1 in Regulating Glutamate Release onto Neocortical Fast-Spiking Inhibitory Neurons.</a> J. Neurosci. 33 (6), 2593-2604 (2013).</li><li>Patel, A. B., Loerwald, K. W., Huber, K. M., Gibson, J. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Postsynaptic+FMRP+promotes+the+pruning+of+cell-to-cell+connections+among+pyramidal+neurons+in+the+L5A+neocortical+network.">Postsynaptic FMRP promotes the pruning of cell-to-cell connections among pyramidal neurons in the L5A neocortical network.</a> J. Neurosci. 34 (9), 3413-3418 (2014).</li><li>McConnell, M. J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Mosaic+Copy+Number+Variation+in+Human+Neurons.">Mosaic Copy Number Variation in Human Neurons.</a> Science. 342 (6158), 632-637 (2013).</li><li>McConnell, M. J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Intersection+of+diverse+neuronal+genomes+and+neuropsychiatric+disease:+The+Brain+Somatic+Mosaicism+Network.">Intersection of diverse neuronal genomes and neuropsychiatric disease: The Brain Somatic Mosaicism Network.</a> Science. 356 (6336), eaal1641 (2017).</li><li>Gu, H., Marth, J. D., Orban, P. C., Mossmann, H., Rajewsky, K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Deletion+of+a+DNA+polymerase+beta+gene+segment+in+T+cells+using+cell+type-specific+gene+targeting.">Deletion of a DNA polymerase beta gene segment in T cells using cell type-specific gene targeting.</a> Science. 265 (5168), 103-106 (1994).</li><li>Hodges, J. L., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Astrocytic+Contributions+to+Synaptic+and+Learning+Abnormalities+in+a+Mouse+Model+of+Fragile+X+Syndrome.">Astrocytic Contributions to Synaptic and Learning Abnormalities in a Mouse Model of Fragile X Syndrome.</a> Biol. Psychiatry. (17), 1-11 (2016).</li><li>Young, P., Qiu, L., Wang, D., Zhao, S., Gross, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Single-neuron+labeling+with+inducible+cre-mediated+knockout+in+transgenic+mice.">Single-neuron labeling with inducible cre-mediated knockout in transgenic mice.</a> Nat. Neurosci. 11 (6), 721-728 (2011).</li><li>Zong, H., Espinosa, J. S., Su, H. H., Muzumdar, M. D., Luo, L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Mosaic+Analysis+with+Double+Markers+in+Mice.">Mosaic Analysis with Double Markers in Mice.</a> Cell. 121 (3), 479-492 (2005).</li><li>Hippenmeyer, S., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Genetic+mosaic+dissection+of+Lis1+and+Ndel1+in+neuronal+migration.">Genetic mosaic dissection of Lis1 and Ndel1 in neuronal migration.</a> Neuron. 68 (4), 695-709 (2010).</li><li>De la Rossa, A., Jabaudon, D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=In+vivo+rapid+gene+delivery+into+postmitotic+neocortical+neurons+using+iontoporation.">In vivo rapid gene delivery into postmitotic neocortical neurons using iontoporation.</a> Nat. Protoc. 10 (1), 25-32 (2015).</li><li>Lu, W., Bushong, E. A., Shih, T. P., Ellisman, M. H., Nicoll, R. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+cell-autonomous+role+of+excitatory+synaptic+transmission+in+the+regulation+of+neuronal+structure+and+function.">The cell-autonomous role of excitatory synaptic transmission in the regulation of neuronal structure and function.</a> Neuron. 78 (3), 433-439 (2013).</li><li>Duan, Y., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Semaphorin+5A+inhibits+synaptogenesis+in+early+postnatal-+and+adult-born+hippocampal+dentate+granule+cells.">Semaphorin 5A inhibits synaptogenesis in early postnatal- and adult-born hippocampal dentate granule cells.</a> eLife. 3, 1-24 (2014).</li><li>Dixit, R., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Efficient+Gene+Delivery+into+Multiple+CNS+Territories+Using+In+utero+Electroporation.">Efficient Gene Delivery into Multiple CNS Territories Using In utero Electroporation.</a> J. Vis. Exp. (52), e2957 (2011).</li><li>Matsui, A., Yoshida, A. C., Kubota, M., Ogawa, M., Shimogori, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Mouse+in+utero+Electroporation:+Controlled+Spatiotemporal+Gene+Transfection.">Mouse in utero Electroporation: Controlled Spatiotemporal Gene Transfection.</a> J. Vis. Exp. (54), e3024 (2011).</li><li>Briz, C. G., Navarrete, M., Esteban, J. A., Nieto, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=In+utero+Electroporation+Approaches+to+Study+the+Excitability+of+Neuronal+Subpopulations+and+Single-cell+Connectivity.">In utero Electroporation Approaches to Study the Excitability of Neuronal Subpopulations and Single-cell Connectivity.</a> J. Vis. Exp. (120), (2017).</li><li>Saito, T., Nakatsuji, N. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Efficient+gene+transfer+into+the+embryonic+mouse+brain+using+in+vivo+electroporation.">Efficient gene transfer into the embryonic mouse brain using in vivo electroporation.</a> Dev. Biol. 240 (1), 237-246 (2001).</li><li>Saito, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=In+vivo+electroporation+in+the+embryonic+mouse+central+nervous+system.">In vivo electroporation in the embryonic mouse central nervous system.</a> Nature protocols. 1 (3), 1552-1558 (2006).</li><li>Tabata, H., Nakajima, K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Efficient+in+utero+gene+transfer+system+to+the+developing+mouse+brain+using+electroporation:+Visualization+of+neuronal+migration+in+the+developing+cortex.">Efficient in utero gene transfer system to the developing mouse brain using electroporation: Visualization of neuronal migration in the developing cortex.</a> Neuroscience. 103 (4), 865-872 (2001).</li><li>Matsuda, T., Cepko, C. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Controlled+expression+of+transgenes+introduced+by+in+vivo+electroporation.">Controlled expression of transgenes introduced by in vivo electroporation.</a> Proc. Natl. Acad. Sci. U.S.A. 10 (3), 1027-1032 (2007).</li><li>Pacary, E., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Visualization+and+Genetic+Manipulation+of+Dendrites+and+Spines+in+the+Mouse+Cerebral+Cortex+and+Hippocampus+using+In+utero+Electroporation.">Visualization and Genetic Manipulation of Dendrites and Spines in the Mouse Cerebral Cortex and Hippocampus using In utero Electroporation.</a> J. Vis. Exp. (65), e4163 (2012).</li><li>Mizuno, H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=NMDAR-Regulated+Dynamics+of+Layer+4+Neuronal+Dendrites+during+Thalamocortical+Reorganization+in+Neonates.">NMDAR-Regulated Dynamics of Layer 4 Neuronal Dendrites during Thalamocortical Reorganization in Neonates.</a> Neuron. 82 (2), 365-379 (2014).</li><li>Luo, W., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Supernova:+A+Versatile+Vector+System+for+Single-Cell+Labeling+and+Gene+Function+Studies+in+vivo.">Supernova: A Versatile Vector System for Single-Cell Labeling and Gene Function Studies in vivo.</a> Sci. Rep. 6, 35747 (2016).</li><li>Mader, S. L., Libal, N. L., Pritchett-Corning, K., Yang, R., Murphy, S. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Refining+timed+pregnancies+in+two+strains+of+genetically+engineered+mice.">Refining timed pregnancies in two strains of genetically engineered mice.</a> Lab animal. 38 (9), 305-310 (2009).</li><li>Vidal, G. S., Djurisic, M., Brown, K., Sapp, R. W., Shatz, C. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Cell-Autonomous+Regulation+of+Dendritic+Spine+Density+by+PirB.">Cell-Autonomous Regulation of Dendritic Spine Density by PirB.</a> eNeuro. 3 (5), 1-15 (2016).</li><li>Byers, S. L., Wiles, M. V., Dunn, S. L., Taft, R. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Mouse+estrous+cycle+identification+tool+and+images.">Mouse estrous cycle identification tool and images.</a> PLoS ONE. 7 (4), 1-5 (2012).</li><li>Andreu-Agullo, C., Maurin, T., Thompson, C. B., Lai, E. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Ars2+maintains+neural+stem-cell+identity+through+direct+transcriptional+activation+of+Sox2.">Ars2 maintains neural stem-cell identity through direct transcriptional activation of Sox2.</a> Nature. 481, 195-198 (2011).</li><li>Scotto-Lomassese, S., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Fragile+X+mental+retardation+protein+regulates+new+neuron+differentiation+in+the+adult+olfactory+bulb.">Fragile X mental retardation protein regulates new neuron differentiation in the adult olfactory bulb.</a> J. Neurosci. 31, 2205-2215 (2011).</li><li>. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=.">.</a> Plasmids 101: A Desktop Resource. , (2017).</li><li>. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=.">.</a> Pipette Cookbook. , (2015).</li><li>Cuddington, B., Verschoor, M., Mossman, K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Handling+of+the+Cotton+Rat+in+Studies+for+the+Pre-clinical+Evaluation+of+Oncolytic+Viruses.">Handling of the Cotton Rat in Studies for the Pre-clinical Evaluation of Oncolytic Viruses.</a> J. Vis. Exp. (93), e52232 (2014).</li><li>Leary, S., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=.">.</a> AVMA Guidelines for the Euthanasia of Animals: 2013 Edition. , (2013).</li><li>Anderson, S. A., Eisenstat, D. D., Shi, L., Rubenstein, J. L. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Interneuron+Migration+from+Basal+Forebrain+to+Neocortex:+Dependence+on+Dlx+Genes.">Interneuron Migration from Basal Forebrain to Neocortex: Dependence on Dlx Genes.</a> Science. 28 (5337), 474-476 (1997).</li><li>Parker, J. M., Austin, J., Wilkerson, J., Carbone, L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Effects+of+Multimodal+Analgesia+on+the+Success+of+Mouse+Embryo+Transfer+Surgery.">Effects of Multimodal Analgesia on the Success of Mouse Embryo Transfer Surgery.</a> J. Am. Assoc. Lab. Anim. Sci. 50 (4), 466-470 (2011).</li><li>Kim, J. -. Y., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Viral+transduction+of+the+neonatal+brain+delivers+controllable+genetic+mosaicism+for+visualising+and+manipulating+neuronal+circuits+in+vivo.">Viral transduction of the neonatal brain delivers controllable genetic mosaicism for visualising and manipulating neuronal circuits in vivo.</a> Eur. J. Neurosci. 37 (8), 1203-1220 (2013).</li><li>Pierfelice, T. J., Gaiano, N. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Ultrasound-Guided+Microinjection+into+the+Mouse+Forebrain+In+Utero+at+E9.5.">Ultrasound-Guided Microinjection into the Mouse Forebrain In Utero at E9.5.</a> J. Vis. Exp. (45), e2047 (2010).</li></ol>

在这里, 我们介绍了在子宫内电穿孔与重组在 floxed 小鼠的组合, 以产生马赛克脑组织。这种方法的优点是, 每次要针对不同的蜂窝子类型时都不需要生成新的鼠标线:在子宫内电穿孔可用于针对兴奋性神经元、抑制性神经元或胶质细胞, 这取决于时间以及电穿孔的位置15,16,17,18,<sup c...

生成一个遗传马赛克是一个经典的实验范式, 以了解的功能基因的兴趣。为了确定基因是否是细胞表型的必要条件, 最简单的方法是在整个生物体中导致基因功能的丧失 (例如击倒)。然而, 要确定某一基因是否需要特定的细胞类型, 基因在整个生物体中的击倒并不是一种有效的方法。相反, 一个方法是需要的, 这将导致在一个给定的细胞中的基因功能丧失, 而它是由野生 (即不受基因干扰) tissue-in 换句话说, 创造马赛克组织。如果突变细胞显示出突变的表型, 但周围的野生细胞没有, 该基因功能的细胞自主的方式。分析的马赛克组织, 其中突变细胞周围的野生组织, 是理想的理解细胞自主功能的基因, 特别是在大脑中的神经元和神经胶质形成一个巨大的互联网络的组织。
多种形式的马赛克脑组织为研究基因的细胞自主功能提供了强有力的模型。研究的重点是神经元移植1, 女性 X 链接嵌2,3,4, 以及内生体细胞嵌5,6根据马赛克得出了他们的结论脑组织。有条件地删除基因通过 "氧合酶复合系统" 是一种充分利用转基因小鼠品系的方法。在这个方法中, 两个 loxP 站点被引入到一个必需的基因序列的两侧 (如外显子), 它的两侧是 loxP 的站点, 它们都朝同一方向 ("floxed")。重组将 loxP 站点之间的顺序7。通过将 floxed 小鼠转到另一条表达重组的老鼠线上, 并在细胞子集 ("记者行") 中使用荧光标记, 可以实现对重组的再组合。这已被证明在各种方法, 以揭示的功能, 一个基因的细胞子集, 如兴奋性神经元或胶质细胞8。记者线可以表达 CreER 的T2 , 以允许由药物诱导的重组 (神经元标记与诱导的综合治疗的淘汰赛, 或光滑)9。在另一种称为 "镶嵌分析双标记 (决策)"10,11的策略中, interchromosomal 重组允许与杂组织一起创建一个纯合突变体。在这些方法中, 每个候选基因或细胞亚型都需要在每次测试时产生一条新的小鼠。另外, 通过导入12或通过病毒载体 (例如腺相关病毒13或慢14携带特定于细胞的子类型, 可以引入后天重组。发起人)。这一策略产生强烈的产后标记。为靶向发育的脑皮质神经元稀少和产前, 一个理想的策略是宫内电穿孔重组与荧光标记。
除了通过在子宫内电穿孔, 通过在体内生成马赛克组织, 我们还对其他已发布的协议15、16中的过程进行了一些改编. 17,18,19,20,21。我们提供信息, 以提高成功繁殖定时怀孕的女性。我们还概述了在皮层组织中引入稀疏和明亮的神经元标记的两个策略: 一种策略是滴定重组的单个构造编码的级别和一个荧光标记22。另一种策略是使用 "超新星" 系统, 这些参数专门设计为23,24。此外, 我们提供了改进的生产一致的显微注射管和简化的在子宫内电穿孔手术。最后, 我们概述的关键步骤, 简化组织学准备, 允许分析树突棘和树突和轴突乔木, 没有进一步染色或免疫组化。

<table>
	<tbody>
		<tr>
			<td>C57BL/6J mice</td>
			<td>The Jackson Laboratory</td>
			<td>#000664</td>
			<td>See &#34;1. Mouse set-up&#34; (step 1.1, &#34;wildtype mice&#34;)</td>
		</tr>
		<tr>
			<td>GFP.Cre empty vector</td>
			<td>AddGene</td>
			<td>#20781</td>
			<td>See &#34;2. DNA set-up&#34; (step 2.1 &#34;single DNA construct that codes for Cre recombinase as well as a fluorescent marker&#34;). GFP.Cre empty vector was a gift from Tyler Jacks.</td>
		</tr>
		<tr>
			<td>pK029.CAG-loxP-stop-loxP-RFP-ires-tTA-WPRE (Supernova)</td>
			<td>AddGene</td>
			<td>#69138</td>
			<td>See &#34;2. DNA set-up&#34; (step 2.1 &#34;Supernova&#34; system) and http://snsupport.webcrow.jp/. pK029.CAG-loxP-stop-loxP-RFP-ires-tTA-WPRE (Supernova) was a gift from Takuji Iwasato.</td>
		</tr>
		<tr>
			<td>pK031.TRE-Cre (Supernova)</td>
			<td>AddGene</td>
			<td>#69136</td>
			<td>See &#34;2. DNA set-up&#34; (step 2.1 &#34;Supernova&#34; system) and http://snsupport.webcrow.jp/. pK031.TRE-Cre (Supernova) was a gift from Takuji Iwasato.</td>
		</tr>
		<tr>
			<td>pK038.CAG-loxP-stop-loxP-EGFP-ires-tTA-WPRE (Supernova)</td>
			<td>AddGene</td>
			<td>#85006</td>
			<td>See &#34;2. DNA set-up&#34; (step 2.1 &#34;Supernova&#34; system) and http://snsupport.webcrow.jp/. pK038.CAG-loxP-stop-loxP-EGFP-ires-tTA-WPRE (Supernova) was a gift from Takuji Iwasato.</td>
		</tr>
		<tr>
			<td>EndoFree Plasmid Maxi Kit (10)</td>
			<td>Qiagen</td>
			<td>#12362</td>
			<td>See &#34;2. DNA set-up&#34; (step 2.3 &#34;endotoxin-free plasmid purification kit&#34;)</td>
		</tr>
		<tr>
			<td>Trypan Blue powder, BioReagent grade</td>
			<td>Sigma</td>
			<td>T6146-5G</td>
			<td>See &#34;2. DNA set-up&#34; (step 2.5 &#34;trypan blue&#34;)</td>
		</tr>
		<tr>
			<td>Sodium Chloride, ACS, 2.5 kg</td>
			<td>VWR</td>
			<td>BDH9286-2.5KG</td>
			<td>See &#34;2. DNA set-up&#34; (step 2.5 &#34;NaCl&#34;)</td>
		</tr>
		<tr>
			<td>Potassium Chloride, ACS, 500 g</td>
			<td>VWR</td>
			<td>#97061-566</td>
			<td>See &#34;2. DNA set-up&#34; (step 2.5 &#34;KCl&#34;)</td>
		</tr>
		<tr>
			<td>Sodium phosphate dibasic, ReagentPlus, 100 g</td>
			<td>Sigma-Aldrich</td>
			<td>S0876-100G</td>
			<td>See &#34;2. DNA set-up&#34; (step 2.5 &#34;Na2HPO4&#34;)</td>
		</tr>
		<tr>
			<td>Potassium phosphate monobasic, ReagentPlus, 100 g</td>
			<td>Sigma-Aldrich</td>
			<td>P5379-100G</td>
			<td>See &#34;2. DNA set-up&#34; (step 2.5 &#34;KH2PO4&#34;)</td>
		</tr>
		<tr>
			<td>Hydrochloric acid, ACS reagent, 500 mL</td>
			<td>Fisher Scientific</td>
			<td>A144-500</td>
			<td>See &#34;2. DNA set-up&#34; (step 2.5 &#34;HCl&#34;)</td>
		</tr>
		<tr>
			<td>P-97 Micropipette Puller</td>
			<td>Sutter Instrument</td>
			<td>P-97</td>
			<td>See &#34;3. Pipette set-up&#34; (step 3.1 &#34;glass capillary puller&#34;)</td>
		</tr>
		<tr>
			<td>3.0 mm wide trough filament</td>
			<td>Sutter Instrument</td>
			<td>FT330B</td>
			<td>See &#34;3. Pipette set-up&#34; (step 3.1 &#34;glass capillary puller&#34;)</td>
		</tr>
		<tr>
			<td>Thin Wall Glass Capillaries, 4&#34;, 1 / 0.75 OD/ID</td>
			<td>World Precision Instruments</td>
			<td>TW100-4</td>
			<td>See &#34;3. Pipette set-up&#34; (step 3.1.1 &#34;glass capillary&#34;)</td>
		</tr>
		<tr>
			<td>Single Ply Soft-Tech Wipes, 4.5&#34;</td>
			<td>Phenix</td>
			<td>LW-8148</td>
			<td>See &#34;3. Pipette set-up&#34; (step 3.2.1 &#34;single-ply task wipe&#34;); other single-ply wipes (e.g. Kimwipes) can be used.</td>
		</tr>
		<tr>
			<td>Graefe Forceps, 7 cm, Straight, 0.7 mm 1x2 Teeth</td>
			<td>World Precision Instruments</td>
			<td>#14140</td>
			<td>See &#34;4. In utero electroporation&#34; (step 4.1 &#34;Graefe forceps&#34;)</td>
		</tr>
		<tr>
			<td>Iris Scissors, 11.5 cm, Straight, 12-pack</td>
			<td>World Precision Instruments</td>
			<td>#503708-12</td>
			<td>See &#34;4. In utero electroporation&#34; (step 4.1 &#34;iris scissors&#34;)</td>
		</tr>
		<tr>
			<td>Hartman Mosquito Forceps, 9 cm, Straight, 12-pack</td>
			<td>World Precision Instruments</td>
			<td>#503728-12</td>
			<td>See &#34;4. In utero electroporation&#34; (step 4.1 &#34;Hartman mosquito forceps&#34;)</td>
		</tr>
		<tr>
			<td>General Purpose Non-Woven Sponges, 2&#34; x 2&#34;, 4-ply</td>
			<td>Medrepexpress</td>
			<td>#2204-c</td>
			<td>See &#34;4. In utero electroporation&#34; (step 4.1 &#34;non-woven gauze sponges&#34;)</td>
		</tr>
		<tr>
			<td>Ring Tipped Forceps, 10 cm, Straight, 2.2mm ID</td>
			<td>World Precision Instruments</td>
			<td>#503203</td>
			<td>See &#34;4. In utero electroporation&#34; (step 4.1 &#34;ring-tipped forceps&#34;)</td>
		</tr>
		<tr>
			<td>Pyrex petri dishes complete, O.D. &#215; H 100 mm &#215; 20 mm</td>
			<td>Sigma-Aldrich</td>
			<td>CLS3160102-12EA</td>
			<td>See &#34;4. In utero electroporation&#34; (step 4.1 &#34;Petri dishes&#34;)</td>
		</tr>
		<tr>
			<td>Flat Type Instrument Tray, Stainless Steel, 13-5/8&#34; x 9-3/4&#34; x 5/8&#34;</td>
			<td>Amazon</td>
			<td>B007SHGAHA</td>
			<td>See &#34;4. In utero electroporation&#34; (step 4.1 &#34;stainless steel tray&#34;)</td>
		</tr>
		<tr>
			<td>Platinum Tweezertrode, 5 mm</td>
			<td>BTX</td>
			<td>#45-0489</td>
			<td>See &#34;4. In utero electroporation&#34; (step 4.3 and 4.16 &#34;tweezer-type electrodes&#34;)</td>
		</tr>
		<tr>
			<td>ECM 830 Foot Pedal</td>
			<td>BTX</td>
			<td>#45-0211</td>
			<td>See &#34;4. In utero electroporation&#34; (step 4.3 and 4.17 &#34;foot pedal&#34;)</td>
		</tr>
		<tr>
			<td>ECM 830 Generator</td>
			<td>BTX</td>
			<td>#45-0052</td>
			<td>See &#34;4. In utero electroporation&#34; (step 4.3 &#34;generator&#34;)</td>
		</tr>
		<tr>
			<td>Single Animal Isoflurane Anesthesia System with Small Induction Box</td>
			<td>Harvard Apparatus</td>
			<td>#72-6468</td>
			<td>See &#34;4. In utero electroporation&#34; (step 4.4 and 4.6 &#34;nose cone&#34;, step 4.4 &#34;induction chamber&#34;)</td>
		</tr>
		<tr>
			<td>Ophthalmic ointment</td>
			<td>Hanna Pharmaceutical Supply Co</td>
			<td>#0536108691</td>
			<td>See &#34;4. In utero electroporation&#34; (step 4.7 &#34;veterinary ophthalmic ointment&#34;)</td>
		</tr>
		<tr>
			<td>Space Gel (AIMS)</td>
			<td>VWR</td>
			<td>#95059-640</td>
			<td>See &#34;4. In utero electroporation&#34; (step 4.8 &#34;sealed pouch filled with supersaturated salt solution&#34;)</td>
		</tr>
		<tr>
			<td>Hair Remover Gel Cream, Sensitive Formula</td>
			<td>Veet</td>
			<td>#062200809951</td>
			<td>See &#34;4. In utero electroporation&#34; (step 4.9 &#34;depilatory cream&#34;)</td>
		</tr>
		<tr>
			<td>10ul Low Retention Tip Starter (960 tips/pk)</td>
			<td>Phenix Research Products</td>
			<td>TSP-10LKIT</td>
			<td>See &#34;4. In utero electroporation&#34; (step 4.12 &#34;sterile 10 &#181;L micropipette tip&#34;)</td>
		</tr>
		<tr>
			<td>Aspirator tube assemblies for calibrated microcapillary pipettes</td>
			<td>Sigma-Aldrich</td>
			<td>A5177</td>
			<td>See &#34;4. In utero electroporation&#34; (step 4.15 &#34;aspirator tube assembly&#34;)</td>
		</tr>
		<tr>
			<td>Braided Absorbable Suture, 4-0, Needle NFS-2(FS-2), 27&#34;</td>
			<td>Medrepexpress</td>
			<td>MV-J397</td>
			<td>See &#34;4. In utero electroporation&#34; (step 4.19 &#34;absorbable sutures&#34;)</td>
		</tr>
		<tr>
			<td>&#8220;LiquiVet Rapid&#8221; Tissue Adhesive</td>
			<td>Medrepexpress</td>
			<td>VG3</td>
			<td>See &#34;4. In utero electroporation&#34; (step 4.20 &#34;tissue adhesive&#34;)</td>
		</tr>
		<tr>
			<td>Hypodermic syringes, polypropylene, Luer lock tip, capacity 1.0 mL</td>
			<td>Sigma-Aldrich</td>
			<td>Z551546-100EA</td>
			<td>See &#34;4. In utero electroporation&#34; (step 4.21 &#34;1 mL syringe&#34;)</td>
		</tr>
		<tr>
			<td>BD Precisionglide syringe needles gauge 26, L 1/2 in.</td>
			<td>Sigma-Aldrich</td>
			<td>Z192392-100EA</td>
			<td>See &#34;4. In utero electroporation&#34; (step 4.21 &#34;26G, &#189;&#8221; needle&#34;)</td>
		</tr>
		<tr>
			<td>Nestlets Nesting Material</td>
			<td>Ancare</td>
			<td>NES3600</td>
			<td>See &#34;4. In utero electroporation&#34; (step 4.24 &#34;nesting materials&#34;)</td>
		</tr>
		<tr>
			<td>Sunflower Seeds, Black Oil, Sterile</td>
			<td>Bio-Serv</td>
			<td>S5137</td>
			<td>See &#34;4. In utero electroporation&#34; (step 4.24 &#34;sunflower seeds&#34;)</td>
		</tr>
		<tr>
			<td>Paraformaldehyde, 97%</td>
			<td>Alfa Aesar</td>
			<td>A11313</td>
			<td>See &#34;5. Histology&#34; (step 5.1.1 &#34;PFA&#34;)</td>
		</tr>
		<tr>
			<td>Economy Tweezers #3, 11 cm, 0.2 x 0.4 mm tips</td>
			<td>World Precision Instruments</td>
			<td>#501976</td>
			<td>See &#34;5. Histology&#34; (step 5.5 &#34;tweezers&#34;)</td>
		</tr>
		<tr>
			<td>Agar powder</td>
			<td>Alfa Aesar</td>
			<td>#10752</td>
			<td>See &#34;5. Histology&#34; (step 5.8.1 &#34;agar&#34;)</td>
		</tr>
		<tr>
			<td>Single-edge razor blades, #9 blade</td>
			<td>Stanley Tools</td>
			<td>#11-515</td>
			<td>See &#34;5. Histology&#34; (step 5.9 &#34;single-edge razor blade&#34;)</td>
		</tr>
		<tr>
			<td>Specimen disc S D 50 mm</td>
			<td>Leica</td>
			<td>#14046327404</td>
			<td>See &#34;5. Histology&#34; (step 5.9 &#34;vibrating microtome specimen disc&#34;)</td>
		</tr>
		<tr>
			<td>Buffer tray S assembly</td>
			<td>Leica</td>
			<td>#1404630132</td>
			<td>See &#34;5. Histology&#34; (step 5.10 &#34;buffer tray&#34;)</td>
		</tr>
		<tr>
			<td>VT1000 S Vibratome</td>
			<td>Leica</td>
			<td>#14047235612</td>
			<td>See &#34;5. Histology&#34; (step 5.10 &#34;vibrating microtome&#34;)</td>
		</tr>
		<tr>
			<td>Double Edge Razor Blades</td>
			<td>Personna</td>
			<td>BP9020</td>
			<td>See &#34;5. Histology&#34; (step 5.10 &#34;blade&#34;)</td>
		</tr>
		<tr>
			<td>Knife Holder S</td>
			<td>Leica</td>
			<td>#14046230131</td>
			<td>See &#34;5. Histology&#34; (step 5.10 &#34;knife holder&#34;)</td>
		</tr>
		<tr>
			<td>Studio Elements Golden Taklon Short Handle Round Brush Set</td>
			<td>Amazon</td>
			<td>B0089KU6XE</td>
			<td>See &#34;5. Histology&#34; (step 5.12.1 &#34;fine tipped paintbrush&#34;)</td>
		</tr>
		<tr>
			<td>Superfrost Plus Slides</td>
			<td>Electron Microscopy Services</td>
			<td>#71869-11</td>
			<td>See &#34;5. Histology&#34; (step 5.12.1 &#34;microscope slide&#34;)</td>
		</tr>
		<tr>
			<td>ProLong Diamond Antifade Mountant, 10 ml</td>
			<td>Thermofisher</td>
			<td>P36970</td>
			<td>See &#34;5. Histology&#34; (step 5.12.3-5.12.4 &#34;mountant&#34;)</td>
		</tr>
		<tr>
			<td>Cover Glass, 24 x 50 mm, No. 1</td>
			<td>Phenix Research Products</td>
			<td>MS1415-10</td>
			<td>See &#34;5. Histology&#34; (step 5.12.4 &#34;coverslip&#34;)</td>
		</tr>
		<tr>
			<td>4&#8242;,6-Diamidino-2-phenylindole dihydrochloride (DAPI)</td>
			<td>Sigma-Aldrich</td>
			<td>D9542</td>
			<td>See &#34;5. Histology&#34; (step 5.13.1 &#34;DAPI&#34;)</td>
		</tr>
		<tr>
			<td>Fixed Stage Upright Microscope</td>
			<td>Olympus</td>
			<td>BX51WI</td>
			<td>See &#34;5. Histology&#34; (step 5.15 &#34;light microscope&#34;)</td>
		</tr>
		<tr>
			<td>Laser Scanning Confocal Microscope</td>
			<td>Nikon</td>
			<td>TE2000/C2si</td>
			<td>See &#34;5. Histology&#34; (step 5.15 &#34;confocal microscope&#34;)</td>
		</tr>
		<tr>
			<td>4x objective, NA = 0.20</td>
			<td>Nikon</td>
			<td>CFI Plan Apo Lambda 4X</td>
			<td>See &#34;5. Histology&#34; (step 5.15 &#34;low-power objective&#34;)</td>
		</tr>
		<tr>
			<td>20x objective, NA = 0.75</td>
			<td>Nikon</td>
			<td>CFI Plan Apo Lambda 20X</td>
			<td>See &#34;5. Histology&#34; (step 5.15 &#34;medium-power objective&#34;)</td>
		</tr>
		<tr>
			<td>60x objective, NA = 1.40</td>
			<td>Nikon</td>
			<td>CFI Plan Apo VC 60X Oil</td>
			<td>See &#34;5. Histology&#34; (step 5.15 &#34;high-power objective&#34;)</td>
		</tr>
	</tbody>
</table>

inducing cre-lox recombination in mouse cerebral cortex through in utero electroporation

基因的细胞自主神经元功能可以通过在小的和稀疏的神经元中造成基因功能的丧失或增益而显露出来。要做到这一点, 就需要生成一个镶嵌体, 其中基因的功能丧失或增益的神经元被不受基因扰动的组织包围。在这里, 我们结合了综合考试-液氧复合系统与在宫内电穿孔, 以产生马赛克脑组织, 可用于研究细胞自主功能的基因在神经元。DNA 结构 (可通过存储库提供), 编码的荧光标签和重组, 被引入到开发的皮层神经元含有基因的 loxP 部位的大脑中的小鼠胚胎使用在子宫穿孔.此外, 我们描述了各种适应的子宫内电穿孔方法, 提高生存能力和再现性。该方法还包括建立一个在稀疏或稠密的神经元中的重组的效价。标记脑组织的组织学准备不需要 (但可以适应) 免疫组化。该结构的使用保证了荧光标记神经元携带的基因重组。组织学准备可以通过对树突和轴突和树突棘的共聚焦成像对神经元进行形态学分析。由于稀疏镶嵌组织中功能的丧失或增益达到了目的, 因此, 该方法允许研究基因产品的细胞自主性和足够度在体内。

单一结构的 GFP。electroporated 在 E15.5 和可视化的 P14。根据结构的浓度和注入量, 可以获得稀疏或稠密的结果22,26。例如, 注射1µL 2 毫克/毫升 GFP。考试结果在稀疏分布的标记细胞, 其中一些可以是明亮的 (图 1A), 并本地化第二层/III (图 1B)。由于组织是100µm 厚, 大多数树突乔木保存 (<strong...

Watch this Scientific Journal Video about Inducing Cre-lox Recombination in Mouse Cerebral Cortex Through In Utero Electroporation at JoVE.com

Inducing Cre-lox Recombination in Mouse Cerebral Cortex Through In Utero Electroporation

在稀疏的细胞群中, 可以通过诱导功能的丧失或增益来研究脑内基因的细胞自主功能。在这里, 我们描述在子宫内电穿孔, 以提供重组到稀疏的人群发育皮层神经元与 floxed 基因, 导致功能丧失在体内。

宫内电穿孔诱导小鼠大脑皮质中氧合酶的重组

Cell-autonomous neuronal functions of genes can be revealed by causing loss or gain of function of a gene in a small and sparse population of neurons. To ...

Research

JoVE Journal

Neuroscience

Inducing Cre-lox Recombination in Mouse Cerebral Cortex Through In Utero Electroporation

Transfection of Mouse Retinal Ganglion Cells by in vivo Electroporation

Transfection of Mouse Retinal Ganglion Cells by in vivo Electroporation

小鼠视网膜神经节细胞的转染在体内电穿孔

The targeting and refinement of RGC projections to the midbrain is a popular and powerful model system for studying how precise patterns of neural ...

科研

神经科学

Efficient Gene Delivery into Multiple CNS Territories Using In Utero Electroporation

Efficient Gene Delivery into Multiple CNS Territories Using In Utero Electroporation

高效的基因传递到多个中枢神经系统使用新界在子宫内电穿孔

The ability to manipulate gene expression is the cornerstone of modern day experimental embryology, leading to the elucidation of multiple developmental ...

Mouse in Utero Electroporation: Controlled Spatiotemporal Gene Transfection

Mouse in Utero Electroporation: Controlled Spatiotemporal Gene Transfection

在子宫内电穿孔：鼠标控制时空基因Transefection

In order to understand the function of genes expressed in specific region of the developing brain, including signaling molecules and axon guidance ...

Detection of Microregional Hypoxia in Mouse Cerebral Cortex by Two-photon Imaging of Endogenous NADH Fluorescence

检测内源NADH的荧光双光子成像的小鼠大脑皮层Microregional缺氧

The brain's ability to function at high levels of metabolic demand depends on continuous oxygen supply through blood flow and tissue oxygen diffusion. ...

Methods for Study of Neuronal Morphogenesis: Ex vivo RNAi Electroporation in Embryonic Murine Cerebral Cortex

Methods for Study of Neuronal Morphogenesis: Ex vivo RNAi Electroporation in Embryonic Murine Cerebral Cortex

神经元形态的研究方法：<em&gt;体外</em&gt; RNAi技术在胚胎小鼠大脑皮质的电穿孔

The cerebral cortex directs higher cognitive functions. This six layered structure is generated in an inside-first, outside-last manner, in which the ...

Visualization and Genetic Manipulation of Dendrites and Spines in the Mouse Cerebral Cortex and Hippocampus using In utero Electroporation

Visualization and Genetic Manipulation of Dendrites and Spines in the Mouse Cerebral Cortex and Hippocampus using In utero Electroporation

可视化和遗传操作在小鼠大脑皮层和使用海马树突和棘<em&gt;在子宫内</em&gt;电穿孔

In utero electroporation (IUE) has become a powerful technique to study the development of different regions of the embryonic nervous system 1-5. To date ...

Dual Electrophysiological Recordings of Synaptically-evoked Astroglial and Neuronal Responses in Acute Hippocampal Slices

双突触诱发的星形胶质细胞和神经元的反应，在急性海马脑片电生理记录

Astrocytes form together with neurons tripartite synapses, where they integrate and modulate neuronal activity. Indeed, astrocytes sense neuronal inputs ...

Generation of Topically Transgenic Rats by In utero Electroporation and In vivo Bioluminescence Screening

Generation of Topically Transgenic Rats by In utero Electroporation and In vivo Bioluminescence Screening

外用转基因大鼠通过代<em&gt;在子宫内</em&gt;电穿孔和<em&gt;在体内</em&gt;生物发光筛选

 In utero electroporation (IUE) is a technique which allows genetic modification of cells in the brain for investigating neuronal development. So far, the ...

Genetic Manipulation of the Mouse Developing Hypothalamus through In utero Electroporation

Genetic Manipulation of the Mouse Developing Hypothalamus through In utero Electroporation

遗传操纵鼠标的发展下丘脑通过<em&gt;在子宫内</em&gt;电穿孔

Genetic  modification of specific regions of the developing mammalian brain is a very  powerful experimental approach. However, generating novel mouse ...

Cortex-, Hippocampus-, Thalamus-, Hypothalamus-, Lateral Septal Nucleus- and Striatum-specific In Utero Electroporation in the C57BL/6 Mouse

Cortex-, Hippocampus-, Thalamus-, Hypothalamus-, Lateral Septal Nucleus- and Striatum-specific In Utero Electroporation in the C57BL/6 Mouse

Cortex-，Hippocampus-，Thalamus-，下丘脑 - ，横向隔核 - 纹状体专用<em&gt;在子宫内</em&gt;电穿孔的C57BL / 6小鼠

In utero electroporation is a widely used technique for fast and efficient spatiotemporal manipulation of various genes in the rodent central nervous ...