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ID:31640321
大小:79.62 KB
页数:9页
时间:2019-01-16
《乳鼠皮层神经元原代培养改良方法及基本电生理特性探究》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、乳鼠皮层神经元原代培养改良方法及基本电生理特性探究摘要:目的:对原有乳鼠大鼠皮层神经元的原代培养方法进行改进,获得高质量且体外存活时间更长的神经元,以期应用于对细胞功能状态要求高的相关研究。方法:多聚赖氨酸预处理培养皿,分离出生24h之内的SD大鼠大脑皮层神经元,采用机械吹打与胰蛋白酶化学消化相结合的方法制备单细胞悬液,经计数后以1X105/mL的细胞密度接种。24h后加阿糖胞昔(3Hg/mL)以抑制非神经细胞过度增殖。培养3d后将培养液全量换为添加B27的培养液。用倒置相差显微镜观察细胞形态,并用膜片钳单通道记录法记录BKCa通道电流。结果:对原有培养方法改进后获得可长期存活的
2、形态典型神经元。在培养36d时,用膜片钳单通道记录法仍能记录到正常的BKCa通道电流。结论:该培养方法简单,经济,结果稳定,可作为体外原代培养乳鼠神经元的良好实验模型。关键词:原代培养;皮层神经元;乳鼠;膜片钳;BKCa通道电流中图分类号:G8042文献标识码:A文章编号:1007-3612(2012)10-0042-05AModifiedMethodforPrimaryCultureofNewbornRatCorticalNeuronsandItsBasicElectrophysiologicalPropertyZHAOLi,CHENYao,GONGLijing,LUYuany
3、uan(BeijingSportUniversity,Beijing100084,China)Abstract:Objective:Tomodifypreviousmethodofprimarynewbornratcorticalneuronculturetogetpurerandmorelonglastingcellsforsomerelatedstudies.Methods:Thecerebralcorticeswereasepticallyremovedfrom024holdSDratsanddissectedout.Mechanicaldissociationandtry
4、psindigestionwerecombinedtoconductmonocellsuspendingmedia.Thedissociatedmomocorticalcellsweredilutedto1X105/mlthentobeplatedonpolyLlysinecoatedpetridish.After24hculture,3ug/mLcytosinearabinoside(AraC)wasaddedtotheculturefor24htoinhibittheoutgrowthofglialcells.Afterthreedayspostplanted,allmedi
5、awereremovedfromculturesandreplacedwithmediumsupplementedwithB27.Thenhalfoftheculturemediumwaschangedeverythreedays.Themorphologicalchangesofneuroncellswereobservedbylightmicroscope.Immunostainingofmicrotubuleassociatedprotein2(MAP2)wasappliedtoassesstheculturepurity・Singlechannelcurrentwasre
6、cordedtoevaluatetheneuronspropertiesbyusingpatchclamptechnique・Results:Theimprovedmethodcouldincreasethecellslifetime・Onthe36thday,theprimaryculturewascharacterizedbynormalmorphologyandwasgainedtypicalBKcacurrent・Conclusion:Thisisasimpleandreliabletechniquefortheinvitroprimarycultureofratcort
7、icalneuronswhichhavelongtimelivabilityandnormalelectrophysiologicalproperty.Keywords:primaryculture,corticalneurons,newbornrat,patchclamp,BKcacurrent原代培养神经细胞的生长发育特征与在体神经元非常相似,且具有样本均一性高,实验条件可控、相对恒定,影响因素单一,可有效排除诸多复杂因素(如体内循环、体液、内分泌、血脑屏障)等优点,日益成为
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