| A-867744Allosteric Modulator |
Sample solution is provided at 25 µL, 10mM.
Nature.2017 Jan 19;541(7637):417-420.
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- Purity = 98.00%
- COA (Certificate Of Analysis)
- MSDS (Material Safety Data Sheet)
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| Cas No. | 1000279-69-5 | SDF | Download SDF |
| Synonyms | A 867744;A867744 | ||
| Chemical Name | 4-[5-(4-chlorophenyl)-2-methyl-3-propanoylpyrrol-1-yl]benzenesulfonamide | ||
| Canonical SMILES | CCC(=O)C1=C(N(C(=C1)C2=CC=C(C=C2)Cl)C3=CC=C(C=C3)S(=O)(=O)N)C | ||
| Formula | C20H19ClN2O3S | M.Wt | 402.89 |
| Solubility | Soluble in DMSO | Storage | Store at -20°C |
| Physical Appearance | Off-white 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. | ||
Targeting α7 neuronal acetylcholine receptors (nAChRs) with selective agonists and positive allosteric modulators (PAMs) is considered a therapeutic approach for managing cognitive deficits in schizophrenia and Alzheimer’s disease. A-867744 is a novel type II PAM with good potency and selectivity.In vitro: In oocytes expressing α7 nAChRs, A-867744 potentiated acetylcholine (ACh)-evoked currents, with an EC50 value of about 1 μM. At highest concentrations of A-867744 tested, ACh-evoked currents were essentially nondecaying. At lower concentrations, no evidence of a distinct secondary component was evident in contrast to 4-naphthalen-1-yl-3a,4,5,9b-tetrahydro -3H-cyclopent-a[c]quinoline-8-sulfonic acid amide (TQS), another type II α7 PAM [1]. In vivo: A-867744 was assessed for its PK properties in rat, dog, and monkey. The animal pharmacokinetic profile of A-867744 was characterized by relatively low plasma clearance values (1.1-2.5 L/h/kg) and volumes of distribution (1.7-4.6 L/kg) across species, with terminal elimination halflives in the 1.0-1.7 h. The bioavailability is 83% in rat and somewhat lower in dog (55%) and monkey (68%). These findings indicated that A-867744 showed acceptable pharmacokinetic profile across species and brain levels sufficient to modulate α7 nAChRs [2]. Clinical trial: A-867744 is currently in the preclinical developlent stage and no clinical data are available.Reference:[1] Malysz J, Grønlien JH, Anderson DJ, Håkerud M, Thorin-Hagene K, Ween H, Wetterstrand C, Briggs CA, Faghih R, Bunnelle WH, Gopalakrishnan M.In vitro pharmacological characterization of a novel allosteric modulator of alpha 7 neuronal acetylcholine receptor, 4-(5-(4-chlorophenyl)-2-methyl-3-propionyl-1H-pyrrol-1-yl) (A-867744), exhibiting unique pharmacological profile. J Pharmacol Exp Ther. 2009;330(1):257-67.[2] Faghih R, Gopalakrishnan SM, Gronlien JH, Malysz J, Briggs CA, Wetterstrand C, Ween H, Curtis MP, Sarris KA, Gfesser GA, El-Kouhen R, Robb HM, Radek RJ, Marsh KC, Bunnelle WH, Gopalakrishnan M. Discovery of 4-(5-(4-chlorophenyl)-2-methyl-3-propionyl-1H-pyrrol-1-yl) benzenesulfonamide (A-867744) as a novel positive allosteric modulator of the alpha7 nicotinic acetylcholine receptor. J Med Chem. 2009;52(10):3377-84.
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实验需要请问有没有养THP-1细胞的同仁？能否寄一皿我，我在广州南方医科大学，不胜感激！
激光共聚焦的看活细胞皿哪里买呢
想问下各位大神，本人用皿养的PC-9GR细胞突然有大片飘起，也并没有成团状飘起，求解决方法？
如题~
已经基本养好了贴壁的原代细胞了，准备鉴定了，看到好多都在说细胞爬片的问题，我可以不做爬片直接在皿里操作吗？具体需要注意些什么呢？感谢各位大神
ps：大皿和6孔板里细胞密度、培养条件等等都几乎一样。
我看园子里有人提过类似的问题，但还没人给出答案，希望有经验或有想法的战友帮忙分析分析啊~谢谢！
同学说传代必须是一皿传多皿，一皿传一皿就不算传代~求高手指点~~
传代后5天，依然没有长满，怕影响活力，想传代和冻存，不知这样是否可以？？
做细胞实验快半年了，一直都还挺顺的，这次五一放完假回来，复苏一支HK2，操作都跟以前一样，没想到出了好多问题：
冻存方法：包裹棉花直接-80℃过夜，第二天转移到液氮
冻存时间：1个半月前冻存的细胞，密度保证没问题，冻存前状态也好
复苏方法：液氮取出后37℃水浴，约2分钟溶解，加入6倍体积的完全培养基，800转离心5分钟，弃去上清，1ml完全培养基重悬，转移入培养皿（进口一次性塑料培养大皿），补足完全培养基，培养箱培养
第二天看细胞全都没贴壁，但是也没死，聚集成团装飘着，没有污染。不想重新离心加重机械损伤，就一直试试看的心态放在培养箱里养着了。又重新复苏一支，还是一样的结果，全飘着没贴壁。不死心，就往前面复苏的那一皿里直接加了1ml的血清，相当于18%的血清比例，过了一天去看，这下细胞都贴壁了。没有另外添加血清的那一皿就还是没贴壁。
另外还有一支以前复苏的HK2，也是一样的方法复苏的，那次复苏很好，细胞基本没什么死的，也都贴壁了，养在皿里状态也不错，但是拿来铺板就还是不贴壁，同样的培基（10%血清），铺板就一个不贴，皿里就都可以贴上。
求助各位战友：
1、复苏不贴壁是为什么？
2、增加血清比例能使复苏的细胞贴壁，这样的细胞是不是可以认为状态并不好，以后的培养是不是要一直这么高比例的血清？还是可以培养一段时间逐步减少血清比例？
3、仍然是10%血清，为什么铺板就不贴壁，而皿里的就没事？是不是铺板的时候也要增加血清比例呢？那在板里干预的过程中是不是要一直保持高比例的血清培养？
4、我的冻存及复苏方法是否有错？我觉得我的HK2从形态、生长速度上来说状态应该是不错的，而且我已经更换了全新的培基、血清和双抗，重新配置了完全培养基，不知道为什么会出现这种不贴壁的问题
拜托各位集思广益，细胞实验已经为了这个不贴壁的问题停滞快2周，心急如焚啊，拜托各位！
