Name: rapid and cost-effective rna extraction of rat pancreatic tissue
Uploaded: 2020-09-19T14:00:00
Description: Watch this Scientific Journal Video about Rapid and Cost-Effective RNA Extraction of Rat Pancreatic Tissue at JoVE.com

本研究由设拉子医科大学提供财政支持（第93-01-01-7178-03-07-2014号格兰特）。我们感谢设拉子医科大学医学电子学习系、虚拟学校和电子学习卓越中心的佐莫罗迪安和罗斯塔米先生编辑了视频。

这项研究 的 伦理 批准得到了 设拉子医科大学（批准编号：93-01-01-7178=03-07-2014）。
注：使用重达250克的雄性斯普拉格-道利大鼠。将含有胰腺组织片片的小瓶浸入RNA稳定试剂中，在-80°C处使用RNA提取试剂溶液保持RNA的完整性。
1. 切除大鼠胰腺组织
<ol><li>准备手术室，将所有所需材料放在机罩下。</li>
	<li>在240°C下，将所有手术器械（修整钳...

<ol>
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在分子生物学中，获得高质量的RNA至关重要。核糖核酸酶在细胞和组织中的存在会迅速降解RNA，使提取变得复杂。RNases 是稳定的酶功能，没有任何共同因素。少量的RNase足以破坏RNA。当大鼠胰腺组织从腹腔中取出时，需要用强洗涤剂对手术器械进行消毒，彻底冲洗，并在240°C下将其放入烤箱至少4小时，在手术前灭活RNases。鉴于RNase水平在胰腺中非常高，手术地点用NaOH和轻度漂白剂进行灭菌，以停...

结构基因数据可以通过基因表达转录到功能产品。RNA分析用于发现不同条件下基因表达的差异。提取核酸的方法有很多，如下：硫化核酸，通过苯酚-氯仿提取，纤维素基色谱，二氧化硅基提取，和核子交换1，2。,2
正确检测基因表达受从组织分离的RNA的完整性影响;因此，在进行进一步测试之前，评估从组织分离的RNA的完整性至关重要，因为对低质量RNA的补充分子测试可能会危及诊断应用结果。因此，具有不同诊断应用的分子生物学测试需要高完整性RNA：定量RT-PCR、微阵列、核糖核酸酶保护测定、北方印迹分析、RNA映射和cDNA库结构3、4。,4
长期保存后，RNA变得相当不稳定。超过10 kb的长mRNA片段特别容易降解5,5，6。因此，研究人员必须考虑影响纯化RNA完整性的各种因素。RNA的纯度必须受到保护，防止RNA、蛋白质、基因组DNA和酶抑制剂污染。此外，RNA 与 UV （260/280） 的最佳和可接受的吸收比必须在 1.8-2.0 范围内，与电泳的碎片最小。最近开发的实验室技术使科学家能够更实际地评估分子分析样本的完整性,。
从胰腺组织中提取未受损的RNA比从其他类型的组织中提取未受损的RNA要困难得多，因为核糖核糖核酸（RNases）的量很高。然而，现有的提取方法，即胰腺组织从腹腔快速弹出和低温均质，以,阻碍RNases，已被证明是无效的7，8，9，10，11，12，13，14。89,10,11,12,13,14
本比较实验研究的目的是修改和比较现有方法，以确定最有效的方法。为此，对RNA提取的各种方案进行了修改和比较。它特别旨在确定最昂贵的方法，需要最低数量的胰腺组织。

<table>
	<tbody>
		<tr>
			<td>Agarose</td>
			<td>Merck</td>
			<td>116801</td>
			<td>Germany</td>
		</tr>
		<tr>
			<td>Atoclave</td>
			<td>Teb Zaim</td>
			<td></td>
			<td>Iran</td>
		</tr>
		<tr>
			<td>Centrifuge</td>
			<td>Sigma</td>
			<td></td>
			<td>Germany</td>
		</tr>
		<tr>
			<td>Chloroform</td>
			<td>Merck</td>
			<td>107024</td>
			<td>Germany</td>
		</tr>
		<tr>
			<td>Diethylpyrocarbonate (DEPC)-treated water</td>
			<td>Sigma</td>
			<td></td>
			<td>Germany</td>
		</tr>
		<tr>
			<td>EDTA</td>
			<td>sigma</td>
			<td>60-00-4</td>
			<td>Germany</td>
		</tr>
		<tr>
			<td>Electrophoresis tank</td>
			<td>Payapajoohesh</td>
			<td></td>
			<td>Iran</td>
		</tr>
		<tr>
			<td>Eppendorf microTube</td>
			<td>Extragene</td>
			<td></td>
			<td>Taiwan</td>
		</tr>
		<tr>
			<td>EtBr</td>
			<td>sigma</td>
			<td>E 8751</td>
			<td>Germany</td>
		</tr>
		<tr>
			<td>Ethanol</td>
			<td>Merck</td>
			<td>81870</td>
			<td>Germany</td>
		</tr>
		<tr>
			<td>Falcon Tube</td>
			<td>Extragene</td>
			<td></td>
			<td>Taiwan</td>
		</tr>
		<tr>
			<td>Formaldehyde</td>
			<td>Merck</td>
			<td>344198</td>
			<td>Germany</td>
		</tr>
		<tr>
			<td>Formamide</td>
			<td>Merck</td>
			<td>344206</td>
			<td>Germany</td>
		</tr>
		<tr>
			<td>Homogenizer-sunicator</td>
			<td>Microson XL 2000</td>
			<td></td>
			<td>USA</td>
		</tr>
		<tr>
			<td>Isopropanol</td>
			<td>sigma</td>
			<td>19516</td>
			<td>Germany</td>
		</tr>
		<tr>
			<td>Ketamine hydrochloride</td>
			<td>sigma</td>
			<td>1867-66-9</td>
			<td>Germany</td>
		</tr>
		<tr>
			<td>Laminar Flow Hood</td>
			<td>Jal Tajhiz</td>
			<td></td>
			<td>Iran</td>
		</tr>
		<tr>
			<td>Mgnetic stirrer</td>
			<td>Labrotechnik</td>
			<td></td>
			<td>USA</td>
		</tr>
		<tr>
			<td>Microcentrifuge</td>
			<td>Eppendorf</td>
			<td></td>
			<td>Germany</td>
		</tr>
		<tr>
			<td>Micropipette Tips</td>
			<td>Extragene</td>
			<td></td>
			<td>Taiwan</td>
		</tr>
		<tr>
			<td>MOPS</td>
			<td>sigma</td>
			<td>85022106</td>
			<td>Germany</td>
		</tr>
		<tr>
			<td>Na AC</td>
			<td>Merck</td>
			<td>567422</td>
			<td>Germany</td>
		</tr>
		<tr>
			<td>NaOH</td>
			<td>Merck</td>
			<td>109137</td>
			<td>Germany</td>
		</tr>
		<tr>
			<td>Oven</td>
			<td>Teb Zaim</td>
			<td></td>
			<td>Iran</td>
		</tr>
		<tr>
			<td>PH meter</td>
			<td>Knick</td>
			<td></td>
			<td>Germany</td>
		</tr>
		<tr>
			<td>RNA Later/RNA stabilization reagent</td>
			<td>Qiagen</td>
			<td>76104</td>
			<td>USA</td>
		</tr>
		<tr>
			<td>Surgical instrument</td>
			<td>Agn Thos</td>
			<td></td>
			<td>German made</td>
		</tr>
		<tr>
			<td>Syringes</td>
			<td>AvaPezeshk</td>
			<td></td>
			<td>Iran</td>
		</tr>
		<tr>
			<td>TriPure reagent/RNA extraction reagent</td>
			<td>Roche</td>
			<td>11667157001</td>
			<td>USA</td>
		</tr>
		<tr>
			<td>Vortex</td>
			<td>Labinco</td>
			<td></td>
			<td>Netherland</td>
		</tr>
		<tr>
			<td>Water bath</td>
			<td>Memmert</td>
			<td></td>
			<td>Germany</td>
		</tr>
		<tr>
			<td>zylazine</td>
			<td>sigma</td>
			<td>7361-61-7</td>
			<td>Germany</td>
		</tr>
	</tbody>
</table>

rapid and cost-effective rna extraction of rat pancreatic tissue

无论提取方法如何，组织和细胞系的优化RNA提取分四个阶段进行：1） 均质化，2） RNA中蛋白质的有效变性，3） 核糖核糖核素灭活，以及 4） 去除DNA、蛋白质和碳水化合物中的污染。然而，当组织中有高水平的RNA时，保持RNA的完整性是非常费力的。自发的自解使得在不损害胰腺组织的情况下从胰腺组织中提取RNA变得非常困难。因此，在提取过程中需要一种实用的RNA提取方法来维持胰腺组织的完整性。通过在不到2分钟内获得20-30毫克大鼠胰腺组织并提取RNA，对现有方案进行了实验和比较研究。结果通过电泳评估。实验进行了三次，以概括结果。当RNA提取试剂用作试剂时，在-80°C下将胰腺组织浸入RNA稳定试剂中24小时，产生高完整性RNA。所得结果与具有自旋柱结合的商业套件所得结果相当。

根据常规且经过修改的不带RNA稳定试剂的手术方案评估RNA提取试剂中RNA的完整性 使用RNA提取试剂从常规手术方案提取RNA后，观察到不可接受的波段。车道1显示来自肝脏的RNA作为对照。车道2显示了从常规手术方案获得的28S/18S rRNA波段的退化状态。当胰腺组织的数量减少到50毫克（车道3）或20-30毫克（车道4），并在没有RNA稳定试剂的情况下立即进行手术（修改方案）时，RNA分离不如?...

Watch this Scientific Journal Video about Rapid and Cost-Effective RNA Extraction of Rat Pancreatic Tissue at JoVE.com

Rapid and Cost-Effective RNA Extraction of Rat Pancreatic Tissue

分离的RNA的纯度和完整性是RNA依赖性测定中的重要一步。在这里，我们提出了一个实用、快速和廉价的方法，从少量未受损的胰腺组织中提取RNA。

大鼠胰腺组织快速、经济高效的RNA提取

Regardless of the extraction method, optimized RNA extraction of tissues and cell lines are carried out in four stages: 1) homogenization, 2) effective ...

大家好。我们设计了一种简单、快速的类描述方法，用于从胰腺组织中高效提取RNA。这种方法的主要优点是优化了从最小组织中提取RNA的优化程序，由于自解。再次你好。演示程序将由Sanaz Dastghaib完成，这是我的博士生，在我们的实验室在设拉子医科大学生物化学系。灭活RNase在烤箱中消毒所有的手术仪器。每公斤注射氯胺酮-锡氨酸80/8毫克。将1个cc.RNA稳定试剂加入适当的微管，在现有的组织中活化内核糖。立即将老鼠放在手术板上。给外科医生做中线切口。然后，用70%的酒精消毒所有腹部表面，去除老鼠的头发。切皮肤做手术。重塑切口，将腹部从区域打开至前腿。翻转腹部器官到左侧，露出胰腺。仔细找到在腹腔中传播的胰腺组织。找到显示下的区域，找出胰腺，而不会与脂肪组织混淆。在不到两分钟内立即从腹腔中取出20至30毫克胰腺。将去除的组织迅速放入微管中，用刀刀切割，将RNA稳定试剂穿透分离组织。将微管放在氮气罐中，立即冻结。他们所有的微管应该保存在 80

Research

JoVE Journal

Biochemistry

Optimized Protocol for the Extraction of Proteins from the Human Mitral Valve

从人体二尖瓣提取蛋白质的优化方案

Analysis of the cellular proteome can help to elucidate the molecular mechanisms underlying diseases due to the development of technologies that permit ...

科研

生物化学

Mouse Adipose Tissue Collection and Processing for RNA Analysis

小鼠脂肪组织的采集和 RNA 分析处理

Compared to other tissues, white adipose tissue has a considerably less RNA and protein content for downstream applications such as real-time PCR and ...

Toeprinting Analysis of Translation Initiation Complex Formation on Mammalian mRNAs

哺乳动物基因翻译起始复合体形成的 Toeprinting 分析

Translation initiation is the rate-limiting step of protein synthesis and represents a key point at which cells regulate their protein output. Regulation ...

Rapid Isolation of the Mitoribosome from HEK Cells

HEK 细胞 Mitoribosome 的快速分离

The human mitochondria possess a dedicated set of ribosomes (mitoribosomes) that translate 13 essential protein components of the oxidative ...

Capture and Identification of RNA-binding Proteins by Using Click Chemistry-assisted RNA-interactome Capture (CARIC) Strategy

Capture and Identification of RNA-binding Proteins by Using Click Chemistry-assisted RNA-interactome Capture CARIC Strategy

利用单击化学辅助 rna-路特捕获 (无花果) 策略捕获和鉴定 rna 结合蛋白

A comprehensive identification of RNA-binding proteins (RBPs) is key to understanding the posttranscriptional regulatory network in cells. A widely used ...

Extraction and Analysis of Taiwanese Green Propolis

台湾绿蜂胶的提取与分析

Taiwanese green propolis is rich in prenylated flavonoids and exhibits a broad range of biological activities, such as antioxidant, antibacterial, and ...

Studying RNA Interactors of Protein Kinase RNA-Activated during the Mammalian Cell Cycle

哺乳动物细胞周期内蛋白质激酶 rna 激活的 rna 相互作用研究

Protein kinase RNA-activated (PKR) is a member of the innate immune response proteins and recognizes the double-stranded secondary structure of viral ...

Extremely Rapid and Specific Metabolic Labelling of RNA In Vivo with 4-Thiouracil (Ers4tU)

Extremely Rapid and Specific Metabolic Labelling of RNA In Vivo with 4-Thiouracil Ers4tU

极快速和特殊的代谢标签的RNA在Vivo与4-Thiouracil （Ers4tU）

The nucleotide analogue, 4-thiouracil (4tU), is readily taken up by cells and incorporated into RNA as it is transcribed in vivo, allowing isolation of ...

Ganglioside Extraction, Purification and Profiling

神经节苷脂提取、纯化和分析

Gangliosides are glycosphingolipids that contain one or more sialic acid residues. They are found on all vertebrate cells and tissues but are especially ...