97超碰人人做人人爱欧美,精品国产亚洲第一区二区三区 ,一边做一边说国语对白,中国老妇女50xxxxhd,美丽的姑娘高清免费观看,国产精品久久久久7777,精品人人妻人人澡人人爽人人,把女邻居弄到潮喷的性经历
歡迎光臨上海懋康生物科技有限公司
主頁 > 新聞動態 > Polysciences你會喜歡的第二代聚合物轉染試劑
新聞動態
Polysciences你會喜歡的第二代聚合物轉染試劑

品牌故事——我的故事里怎能少了你?

PolyscienceInc,成立于1961年,起家于化學但超越化學領域的美國制造商,總部位于賓夕法尼亞州沃靈頓,公司業務主要涵蓋三大塊:1.實驗用產品:a)成千上萬種具品牌特色的化合物和試劑,應用于實驗室研究,組織學,電鏡和解剖病理學以及其他診斷和生命科學研究;b)種類極其寬廣的單體和聚合體,滿足各方研究領域;c)有機/無機化合物,生物可降解材料,磁珠,熒光素,染料和特定抗體,以及常規蛋白包被顆粒(直徑范圍40nm~10mm)的首要制造工廠;d)頂端多聚化合物的供貨中心,滿足各種高性能工業領域需求,包括替代能源,汽車電子,國防&電子,便攜式通信和計算機,醫療器械組裝。2. 定制合成;3.cGMP生產服務。1800523-2575;(215343-6484

Brand Story

MePolyscienceIncChemistry beyond the ordinary

MePolyscienceIncHeadquartered at WarringtonPACall vial 1800523-2575

MePolyscienceIncManufacturing hundreds of specialty chemicals and reagents for laboratory research, Histology, Light Microscopy and Anatomic Pathology as well as other clinical and life science applications.

MePolyscienceIncStocking a wide portfolio of monomers and polymers for research applications.

MePolyscienceIncDeveloped to be the primary source for organic, inorganic, biodegradable, magnetic, fluorescent, dyed and specific antibody and general protein coated particles in diameters spanning the range of 40nm to 10mm.

MePolyscienceIncOffering innovative polymer products to meet the high performance requirements of a variety of industries including alternative energy, automotive electronics, defense & aerospace electronics, portable communications & computing, medical device assembly, and more. 

——Written/Edited by V. Shallan

 

Special Products

你會喜歡的第二代聚合物轉染試劑

PolyethylenimineLinearMw 25000 線性化聚乙烯亞胺(PEI 25000

基本描述:

線性化聚乙烯亞胺PEI 25000,一種高電荷陽離子聚合物,非常容易結合于高電荷陰離子基質。工業應用上,線性化PEI可改善負電荷染料的物理外觀,以調整染料的化學特性和增強染料與固相基質的黏附能力,常用作黏附增強劑,作用同多聚賴氨酸(poly-lysine);科研應用上,線性化PEI能與DNA或其他負電荷生物大分子簡單結合,正是這一特性,使得成為一種非常行之有效的載體運輸介質Vector carrier),即轉染試劑

化學性質:

CAS NO.

9002-98-6, 26913-06-4

Formula

(CH2CH2NH)n

Molecular Weight

25,000

Melting Point

73-75º 

Solubility

Soluble In: hot water, cold water at low pH, methanol, and ethanol.

Insoluble In: benzene, ethyl ether and acetone

Appearance

White to yellow solid

訂購信息:【*,現貨供應】

品牌

貨號

名稱

規格

*(元)

Polysciences

23966-2

線性聚乙烯亞胺(MW 25000

2g

2684

另,提供更高轉化效率的PEI Max 40000,自由基形式分子量相當于PEI 25000,研究證實其體外質粒DNA轉染效率提高達21倍。

Polysciences

24765-2

線性聚乙烯亞胺鹽酸鹽Max,(MW 40000 (Equivalent to Mw 25,000 in Free Base Form)

2g

3184

使用方法【來源于:CSH protocols,僅作交流學習

1. Pour ~450 mL of Milli-Q H2O into a 500-mL glass beaker.

2. Add 500 mg of PEI to the beaker with stirring.

3. Add concentrated HCl drop-wise to the solution to pH <2.0.

4. Stir until the PEI is dissolved (~2-3 h). Maintain the pH <2.0 throughout.

Approximay 800 μL of 12 M HCl will be required for full PEI dissolution. There may still be some small fiber particles that will not dissolve.

5. Add concentrated NaOH drop-wise to the solution to pH 7.0.

Approximay 500 μL of 10 M NaOH will be required to neutralize the PEI solution.

6. Pour the solution into a 500-mL glass cylinder. Adjust the final volume to 500 mL with Milli-Q H2O.

7. Filter-sterilize the solution through a 0.22-μm membrane.

8. Store aliquots of the desired volume at -20°C.

應用文獻【基因轉染用途

Zhong Z, Feijen J, Lok MC, Hennink WE, Christensen LV, Yockman JW, Kim YH, Kim SW. (2005). Low molecular weight linear polyethylenimine-b-poly(ethylene glycol)-b-polyethylenimine triblock copolymers: synthesis, characterization, and in vitro gene transfer properties.Biomacromolecules. 6(6):3440-8.

Sharon E. Reed, Elizabeth M. Staley, John P. Mayginnes, David J. Pin (2006). Transfection of mammalian cells using linear polyethylenimine is a simple and effective means of producing recombinant adeno-associated virus vectors. Journal of Virological Methods. 138(1–2): 85–98.

Patti A. LongoJennifer M. KavranMin-Sung Kim, and Daniel J. Leahy2013Transient Mammalian Cell Transfection with Polyethylenimine (PEI) . Methods Enzymol. 529: 227–240.

——Written/Edited by V. Shallan【版權歸MKBio懋康所有】

 

 

更的PEI聚乙烯亞胺聚合物轉染試劑

Polyethylenimine HCl MAX, Linear, Mw 40,000

線性化聚乙烯亞胺鹽酸鹽 MAXPEI 40000

基本描述:

Polyethylenimine HCl MAX, Linear, Mw 40,000PEI 40000)是熱賣產品線性化聚乙烯亞胺PEI25,000的升級產品,不同之處在于1)*水解(去乙酰化);2PEI25000的鹽酸鹽形式,具更高的水溶特性;3)含更長連續性乙烯亞胺(ethyleneimine)片段,其質子化氮水平比PEI25000提高11%以上。本品經堿中和后,可轉化為線性化自由胺(PEI),此時分子量正相當于25,000

Thomas Met al2005)研究數據表明,去乙酰化的PEI 40,000Polyethylenimine MAX 40,000)體外質粒DNA轉染效率提高21倍,小鼠體內靶向效率達到10,000倍,隨之肺部特異療效顯示增強1500倍。

化學性質:

CAS NO.

9002-98-6, 26913-06-4

Molecular Weight

40,000~22,000 free base

Solubility

Soluble In: Cold and room temperature water 

Insoluble In: Common organic solvents (ethanol, acetone, tetrahydrofuran)

Appearance

White to off-white free flowing solid

訂購信息:【*,現貨供應】

品牌

貨號

名稱

規格

*(元)

Polysciences

24765-2

線性聚乙烯亞胺鹽酸鹽Max,(MW 40000 (Equivalent to Mw 25,000 in Free Base Form)

2g

3184

另,提供基本型PEI 25000

Polysciences

23966-2

線性聚乙烯亞胺(MW 25000

2g

2684

應用文獻【基因轉染用途

Mann JF, McKay PF, Arokiasamy S, Pa RK, Klein K, Shattock RJ. (2013). Pulmonary delivery of DNA vaccine constructs using deacylated PEI elicits immune responses and protects against viral challenge infection. J Control Release. 170(3):452-9.

Thomas M, Lu JJ, Ge Q, Zhang C, Chen J, Klibanov AM. (2005). Full deacylation of polyethylenimine dramatically boosts its gene delivery efficiency and specificity to mouse lungProc Natl Acad Sci U S A. 102(16):5679-84.

——Written/Edited by V. Shallan【版權歸MKBio懋康所有】

 

  • © 2019 上海懋康生物科技有限公司 版權所有 技術支持:環保在線
  • 電 話:18616957973 傳 真:86-021-54736159 QQ號碼:1563822900 郵 箱:2971634497@qq.com 地 址:上海市閔行區虹梅南路2588號綠亮科創園1幢A棟321室
  • 備案號:滬ICP備16016464號-3 總訪問量:593148
在線客服 聯系方式

服務熱線

18616957973

主站蜘蛛池模板: 精产国品一二三产区别手机| 男人的天堂av网站| 中国老妇xxxx性开放| 日本大香伊一区二区三区| 欧美v亚洲v综合v国产v| 韩国电影办公室免费| 菠萝蜜免费观看视频| 浪货趴办公桌~h揉秘书视频| 国产美女牲交视频| 韩国电影办公室免费| 国产va在线观看免费| 欧美丰满熟妇xxxx| 久久露脸国产精品| 最近中文字幕免费完整| 久久夜色精品国产噜噜av| 野花高清在线观看免费全集7| 花房姑娘日本片免费观看| youjizz国产在线观看| 少妇粗大进出白浆嘿嘿视频| 17岁日本免费bd完整版观看| 国产精品视频啊啊| 无码精品视频一区二区三区| 免费120秒体验试看5次| jizz国产免费观看| 野花免费观看日本韩国| 最近免费中文字幕大全高清大全10| 涩涩涩丁香色婷五月网| 欧美性xxxxx极品| 波多野结衣av无码| 蜜桃mv在线播放免费观看视频| 97碰碰碰人妻无码视频| 久久综合激激的五月天| jzzijzzij亚洲成熟少妇| 亚洲色中文字幕无码av| 野花高清在线观看免费全集7| 成人年无码av片在线观看| 久久久久人妻精品一区三寸| 韩国久久久久久级做爰片| 亚洲精品国产成人综合久久久久久久久| 美女mm131爽爽爽作爱视频| 女人被狂c躁到高潮视频|