ScreenEScellsbySouthernBlot
Digest DNA in 96-well plateTo each well add:4ul 10Xbuffer4ul Enzyme0.4ul Spermidine(0.4M)31.6ul H2O37‡C 19h, then add 4ul loading dye to each well. Load into 400ml 1% agarose gel immediately or keep the plate at -20‡C.Southern Blot1) Take picture of agarose gel to be blotted with phoshorescent ruler lined up along side it, such that the ruler is lined up with the top of the wells. This is so you can later estimate th......阅读全文
Screen－ES－cells－by－Southern－Blot
Digest DNA in 96-well plateTo each well add:4ul 10Xbuffer4ul Enzyme0.4ul Spermidine(0.4M)31.6ul H2O37‡C 19h, then add 4ul loading dye to each well. Lo
KARYOTYPING－ES－CELLS
An actively growing culture of cells is required, i e 2 - 3 d ES cell culture. The total number of cells needs to be between 106 - 107 cells.N B Read
Electroporation－of－ES－cells
Cells are routinely passaged two days prior to electroporating. Usually one 10 cm plate at approximately 80% confluency will provide enough cells for
Southern－Blot
1. Run gel (0.8 -1.0% agarose is best). For yeast chromosomal Southerns, digest 20 μg DNA. Use 50 ml minigel for most purposes. Photograph gel, but mi
Differentiate－ES－cells－into－glial－cells－and－neurons
Day -1: Pass ES cells at normal density on gelatinized plate to free the culture of contamination fibroblast cells.___________________Day 1: Trypsiniz
FACS－Analysis－of－ES－Cells
Isolate cells and dissociate to single cell suspension (can use Gibco Cell Dissociation Buffer, Accutase or Trypsin)Wash with 10% FBS/DMEM:F12For surf
Routine－Culturing－of－ES－Cells
Cell are normally passaged every 2-3 days, this is important to avoid differentiation.Signs of differentiation are:-i) colonies are surrounded by flat
Genomic－Southern－Blot
SolutionsProtocol:Digest 5-10 μg genomic DNA overnight with restriction enzyme of choice.Run digested gDNA on 0.8% TAE gel with marker (with no ethidi
Southern－blot实验
实验方法原理 具有一定同源性的两条核酸单链在一定的条件下，可按碱基互补的原则特异性地杂交形成双链。利用琼脂糖凝胶电泳分离经限制性内切酶消化的DNA片段，将胶上的DNA变性并在原位将单链DNA片段转移至尼龙膜或其他固相支持物上，经干烤或者紫外线
Southern－blot实验
Southern blot可应用于：（1）检测重组DNA；（2）分析DNA样品中是否有与探针序列同源的DNA片段；（3）验证检测片段的分子量大小。实验方法原理具有一定同源性的两条核酸单链在一定的条件下，可按碱基互补的原则特异性地杂交形成双链。利用琼脂糖凝胶电泳分离经限制性内切酶消化的DNA片段，将胶
Southern－blot实验
实验方法原理 互补的核苷酸序列通过Walson-Crick碱基配对形成稳定的杂合双链分子DNA分子的过程称为杂交。杂交过程是高度特异性的，可以根据所使用的探针已知序列进行特异性的靶序列检测。杂交的双方是所使用探针和要检测的核酸。该检测对象可以是克隆化的基因组DNA，也可以是细胞总DNA 或总RN
Differentiate－ES－cells－into－cardiac－myocytes
Day -1: Pass ES cells at normal density on gelatinized plate to free the culture of contamination fibroblast cells.____________________Day 1: Trypsini
SOUTHERN－BLOT的步骤
1. Run the gel as normal. Often for genomic southerns it is desirable to run long gels (18cm) over 4-6hrs.2. Photograph the gel with a ruler adjacent
Genomic－Southern－Blot－Analysis
This chapter describes a detailed protocol for genomic Southern blot analysis which can be used to detect transgene or endogenous gene sequences i
Southern－blot杂交鉴定
1）取10ul待测DNA，于一定浓度的琼脂糖凝胶上进行电泳。(20mL,1.0%凝胶,)2) 凝胶用溴化乙锭染色，切掉凝胶四周多余部分，并在凝胶的一角作一记号, 拍照记录电泳结果(拍照时, 凝胶旁放一尺子)。3) 杂交用胶的制备 (做以下步骤两组合一)A.将凝胶浸没入30mL 0.25mol/L H
Human－Embryonic－Stem－(ES)－Cell－Protocols——Thawing－Human－ES－cells
Remove Human ES cells from liquid nitrogen storage tank. Fill out a freeze/thaw form.Thaw cryovial by gently swirling in waterbath until only a small
Human－Embryonic－Stem－(ES)－Cell－Protocols——Freezing－Human－ES－Cells
Collagenase cells for approximately 7 minutes at 37 °C (until edges of colonies are curling up).With a 5 ml pipet, gently pipet and scrape colonies f
Differentiate－ES－cells－into－cystic－embryoid－bodies
Day -1: Pass ES cells at normal density on gelatinized plate to free the culture of contamination fibroblast cells.______________Day 1: Trypsinized th
DNA（基因）检测－Southern－Blot
DNA（基因）检测－Southern BlotDNA吸印转移1．室温下将电泳后的琼脂糖凝胶浸入500ml溶液A中，摇动30分钟后换500ml新鲜溶液A再摇30分钟，使DNA双链碱变性。溶液A：5M NaCl 300.0ml10M NaOH 50.0mlH2O 650.0
DNA印迹（Southern－Blot)实验
【实验原理】DNA印迹是1975年由英国Southern创建的。其基本原理是：DNA分子经限制性核酸内切酶酶切后，由琼脂糖凝胶电泳将所得 DNA片段按分子质量大小分离，然后将DNA片段变性，并使凝胶中的单链DNA片段转移到尼龙膜、硝酸纤维素膜(NC)或其他固相支持物上，此法中DNA 片段
Human－Embryonic－Stem－(ES)－Cell－Protocols——Splitting－Human－ES－cells－on－MEFs
based on splitting onto one plateWarm collagenase IV split media to 37 °C in a water bath.Aspirate media off of cell culture plate.Add the following a
Human－Embryonic－Stem－(ES)－Cell－Protocols—Splitting－Human－ES－cells－onMatrige
based on splitting onto on plateWarm collagenase media to 37°C in a water bath.Aspirate media off of cell culture plate.Add the following amount of co
Southern－blot检测技术在模式动物制备中的应用（二）
图4. Southern blot鉴定同源重组事件[4]另外，在制备基因敲进和条件性基因敲除模式小鼠过程中，Southern blot检测是非常重要的一步。在我们以往的工作中，其中一例Cre定点敲进课题（如图5），Southern blot检测结果显示：小鼠1号，有明显的随机插入现象。图5. Sou
ELECTROPORATION－OF－ES－CELLS－AND－ISOLATION－OF－H/R－CLONES
Need 1.5-2 x 107 cells from a 2 day culture.1. Cells are harvested as normal, washed x 1 in PBS then taken up at conc. of 1.2 x 10 7 cells/ml in cold
Southern－Blot实验原理及方法
实验原理：Southern Blot是进行基因组DNA特定序列定位的通用方法。一般利用琼脂糖凝胶电泳分离经限制性内切酶消化的DNA片段，将胶上的DNA变性并在原位将单链DNA片段转移至尼龙膜或其他固相支持物上，经干烤或者紫外线照射固定，再与相对应结构的标记探针进行杂交，用放射自显影或酶反应显色，
核酸杂交技术(Northern－Blot、Southern－Blot和探针标记）
（一）Southern Blot原理：将待检测的DNA分子用/不用限制性内切酶消化后，通过琼脂糖凝胶电泳进行分离，继而将其变性并按其在凝胶中的位置转移到硝酸纤维素薄膜或尼龙膜上，固定后再与同位素或其它标记物标记的DNA或RNA探针进行反应。如果待检物中含有与探针互补的序列，则二者通过碱基互补的原理进
Southern－blot实验方法与步骤
用于检测重组DNA，也可分析DNA样品中是否有与探针序列同源的DNA片段。用于基因诊断，也可验证检测片段的分子量大小。将基因组DNA经限制性内切酶酶切，进行琼脂糖电泳，把分离后定位在凝胶上的不同分子量的DNA经碱变性处理，将凝胶中变性的DNA转移至一固相支持滤膜。利用标记的某一DNA、RNA或寡核苷
Southern－Blot原理及操作方法
原理：将待检测的DNA分子用/不用限制性内切酶消化后，通过琼脂糖凝胶电泳进行分离，继而将其变性并按其在凝胶中的位置转移到硝酸纤维素薄膜或尼龙膜上，固定后再与同位素或其它标记物标记的DNA或RNA探针进行反应。如果待检物中含有与探针互补的序列，则二者通过碱基互补的原理进行结合，游离探针洗涤后用自显影或
Southern－blot实验方法与步骤
用于检测重组DNA，也可分析DNA样品中是否有与探针序列同源的DNA片段。用于基因诊断，也可验证检测片段的分子量大小。将基因组DNA经限制性内切酶酶切，进行琼脂糖电泳，把分离后定位在凝胶上的不同分子量的DNA经碱变性处理，将凝胶中变性的DNA转移至一固相支持滤膜。利用标记的某一DNA、RNA或寡核苷
核酸蛋白转移电泳及杂交（Southern－Blot、Northern－Blot和...1
一、DNA Southern Blot及杂交 本技术可用于基因组DNA特定序列定位，尤其可分析某些基因的限制性内切酶长度多态性，对遗传性疾病的早期基因诊断、产前诊断或基因变异等方面的研究有应用价值，其过程包括：样品DNA内切酶水解、水解片断的琼脂糖凝胶电泳分离、分离后水解片断的转移(固定)、特异