- Acetyl-Calpastatin (184-210) (human)
- E-64-c
- CA-074 Me
- PD 150606
- Cathepsin G Inhibitor I
- Odanacatib (MK-0822)
| MDL 28170Calpain and cathepsin B inhibitor, selective |
Sample solution is provided at 25 µL, 10mM.
Nature.2017 Jan 19;541(7637):417-420.
Nature.2018 Nov;563(7731):407-411.Nature.2018 Jun 13.Nature.2018 Jun 27.Nature.2018 Mar 29;555(7698):673-677.Nature.2017 Sep 7;549(7670):96-100.Nature.2016 Apr 21;532(7599):398-401.
Science.2016 Aug 5;353(6299)594-8Nat Nanotechnol.2017 Dec;12(12):1190-1198.Nature Biotechnology.2017 Jun;35(6):569-576Nat Med.2018 Sep 17.Cell.2018 Dec 21. pii: S0092-8674(18)31561-7.Cell.Available online 25 October 2018.Cell.2018 Sep 27. pii: S0092-8674(18)31183-8.Cell.2018 Jun 28;174(1):172-186.e21.Cell.2018 Feb 22;172(5):1007-1021.e17.Cell.2017 Nov 30;171(6):1284-1300.e21.Cell.2017 Aug 17. pii: S0092-8674(17)30869-3.Cell.2017 Jul 13;170(2):312-323Nat Med.2018 Jan 29.Nat Med.2017 Nov;23(11):1342-1351.Cell.2017 Apr 6;169(2):286-300.Cell.2015 Aug 27;162(5):987-1002.Cell.2015 Feb 12;160(4):729-44.Nature Medicine.2017 Apr;23(4):493-500.Cancer Cell.2018 May 14;33(5):905-921.e5.Cancer Cell.2018 Apr 9;33(4):752-769.e8.Cancer Cell.2018 Mar 12;33(3):401-416.e8.Cancer Cell.2017 Aug 14;32(2):253-267.e5.Nat Methods.2018 Jul;15(7):523-526.Cell Stem Cell.2018 May 3;22(5):769-778.e4.Cell Stem Cell.2017 Nov 20. pii: S1934-5909(17)30375-2.Quality Control & MSDS
- View current batch:
- Purity = 98.00%
- COA (Certificate Of Analysis)
- NMR (Nuclear Magnetic Resonance)
- MSDS (Material Safety Data Sheet)
- Datasheet
Chemical structure
| Potent, selective inhibitor of calpain and cathepsin B (Ki values are 10 and 25 nM respectively) that does not inhibit trypsin-like serine proteases. | ||||||
| Targets | calpain | cathepsin B | ||||
| IC50 | 10nM | 25nM | ||||
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| Cas No. | 88191-84-8 | SDF | Download SDF |
| Synonyms | N/A | ||
| Chemical Name | benzyl N-[(2S)-3-methyl-1-oxo-1-[(1-oxo-3-phenylpropan-2-yl)amino]butan-2-yl]carbamate | ||
| Canonical SMILES | CC(C)C(C(=O)NC(CC1=CC=CC=C1)C=O)NC(=O)OCC2=CC=CC=C2 | ||
| Formula | C22H26N2O4 | M.Wt | 382.45 |
| Solubility | ≥16.75mg/mL in DMSO | Storage | Store at -20°C |
| Physical Appearance | A solid | Shipping Condition | Evaluation sample solution : ship with blue ice.All other available size:ship with RT , or blue ice upon request |
| General tips | For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months. | ||
MDL 28170 is a selective inhibitor, which inhibites calpain with Ki values of 10nM and cathepsin B with Ki values of 25 nM while does not inhibit trypsin-like serine proteases. And it can penetrate the blood–brain barrier rapidly and show the activity in inhibiting brain cysteine protease activity following systemic administration [1,2].
Calpain could affect reperfusion function directly through limited proteolysis of the sarcomeres.And function improvement of MDL-28170 during reperfusion were supported byexperimets. It is thought to act by blocking the sites of catalysis ofcalpains. The experiments also showed skinned muscle fibers which was isolated from the tropical of stunned ferret hearts reveal decreased sensitivity to Ca2+, and the decrease in sensitivity could be reversed if MDL-28170 is treated prior to ischemia and during early reperfusion [1].
When peritoneal mouse macrophages were pre-infected with trypomastigotes for 3 h , MDL28170 was able to reduce the viability of bloodstream trypomastigotes significantly with an IC50/24h value of 20.4 mM. Also, asparasitespre-treated with MDL28170 concentration rose from 6.25 to 50 mM, presenting a clear dose-dependent inhibition profile prior to of macrophage, where the corresponding inhibition from 20% increased to 50%. In addition, macrophages experimentally infected with T. cruzi which were treated with MDL 28170 presented a reduction in the percentage of infection even at the lowest concentrations of 6.25 mM [3].
Upon Ca2+ repletion in the isolated heart of rats, the hearts deteriorated immediately, revealing a marked depression in cardiac function and an enlarged myocardial injury area. This was accompanied by significant increases in lactate dehydrogenase, mitochondrial release of cytochrome c, the apoptotic index and degraded TnI. MDL 28170 significantly inhibited these changes, with the exception of TnI degradation [4].
References: [1]. Urthaler F, Wolkowicz PE, Digerness SB, et al. MDL-28170, a membrane-permeantcalpain inhibitor, attenuates stunning and PKC epsilon proteolysis in reperfused ferret hearts. Cardiovasc Res, 1997, 35 (1): 60-7.[2]. Li P, Wendy H, He Q, et al. Postischemic treatment withcalpain inhibitor MDL 28170ameliorates brain damage in a gerbil model of global ischemia, Neuroscience Letters, 1998, 247 :17–20.[3]. V?′tor EV, Rubem F, Andre′ L, Effects of the calpain inhibitor MDL28170 on the clinically relevant forms of Trypanosomacruzi in vitro. J AntimicrobChemother , 2010, 65: 1395–1398.[4]. Bi S H, Jin Z X, Zhang J Y, et al. Calpaininhibi tor MDL 28170 protectsagainst the Ca2+paradox in rat hearts.Clinical and Experimental Pharmacology and Physiology , 2012, 39:385–392 .
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就好像撒一撮芝麻在培养基那么大的地方上，我们不能知道它会怎么落。
原代细胞产品专家齐氏生物提醒，原代细胞培养注意事项，供参考：
1、实验材料要新鲜，从活体分离材料后要低温保存，并尽快进行细胞分离实验。
2、无菌操作。操作时用的培养液，可加平时细胞培养液5倍含量的青链霉素。
3、用酶法分离细胞时，注意酶液的浓度和控制消化时间。
贴块法分离细胞时，注意动作要轻柔，不要伤到细胞组织，组织块边缘尽量平整有利于细胞游离。
4、培养液的选择。不同的细胞有对培养液中营养的要求不同，根据所分离细胞的特性选择。
不知道楼主明白没有,意思是说培养基上的癌细胞可能过密,导致营养缺乏,无法满足生长分裂的需要,所以进入G0期,暂时不生长分裂.
3,MHC基因位于第六号染色体上,MHC存在于人类和哺乳动物的细胞表面.根据MHC所编码的分子结构和功能不同而将其分为1,2,3类?.1,2类分子结构相似,主要功能是向T细胞呈递抗原,是被T细胞识别的重要靶分子.1类存在于除红细胞以外的机体所以细胞膜上,2类分子仅存在于成熟B细胞,一些T细胞和抗原呈递细胞膜上,3类分子不具备上述功能,属于血清蛋白.
现在楼主应该明白了,MHC是不参与抗原抗体特异性结合的,是专门用来呈递抗原的.
细胞株(cell strain) 是通过选择法或克隆形成法从原代培养细胞中获得具有特殊性质或标志物的细胞称为细胞株。一般认为，细胞株是用单细胞分离培养或通过筛选的方法，由单细胞增殖形成的细胞群。细胞株的特殊性质或标志必须在整个培养期间始终存在。
细胞系(cell line) 是原代细胞经首次传代成功后即为细胞系。泛指一般可能传代的细胞。其中能够连续传代的细胞叫做连续细胞系或无限细胞系，不能连续培养的称为有限细胞系。大多数二倍体细胞为有限细胞系。由原先存在于原代培养物中的细胞世系所组成。如果不能继续传代，或传代次数有限， 可称为有限细胞系(finite cell line)， 如可以连续培养， 则称为连续细胞系(continuous cell line)， 培养50代以上并无限培养下去。人类肿瘤细胞，在体外培养半年以上，生长稳定，并连续传代的即可称为连续性株或系。
不知道楼主明白没有,意思是说培养基上的癌细胞可能过密,导致营养缺乏,无法满足生长分裂的需要,所以进入G0期,暂时不生长分裂.
3,MHC基因位于第六号染色体上,MHC存在于人类和哺乳动物的细胞表面.根据MHC所编码的分子结构和功能不同而将其分为1,2,3类?.1,2类分子结构相似,主要功能是向T细胞呈递抗原,是被T细胞识别的重要靶分子.1类存在于除红细胞以外的机体所以细胞膜上,2类分子仅存在于成熟B细胞,一些T细胞和抗原呈递细胞膜上,3类分子不具备上述功能,属于血清蛋白.
现在楼主应该明白了,MHC是不参与抗原抗体特异性结合的,是专门用来呈递抗原的.
哪种要好，有什么要求吗？接种多少代的细胞？
1.培养基最好是培养原代细胞专门的培养基或说是配套的培养基; 2.关键还是生长因子等的浓度; 3.如果需要的话,需要明胶包被.
2.关键还是生长因子等的浓度；
3.如果需要的话,需要明胶包被.
