| TASIN-1inhibitor of mutant adenomatous polyposis coli (APC) |
Sample solution is provided at 25 µL, 10mM.
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- Purity = 98.00%
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Chemical structure
Related Biological Data
| Cell experiment [1]: | |
Cell lines | HCT116 (WT APC) and DLD1 (truncated APC1417) cell lines |
Preparation method | This compound is soluble in DMSO. General tips for obtaining a higher concentration: Please warm the tube at 37℃ for 10 minutes and/or shake it in the ultrasonic bath for a while. Stock solution can be stored below -20℃ for several months. |
Reacting condition | 0.0001-100 μM; 48 h |
Applications | TASIN-1 exhibited potent and selective toxicity toward DLD1 cells with IC50 value of 70 nM. TASIN-1 inhibited soft agar growth only in DLD1 cells. When cultured in medium with 0.1% serum for 7 days, HCT116 cells showed similar sensitivity to TASIN-1 as DLD1 cells. |
| Animal experiment [1]: | |
Animal models | genetically engineered colorectal cancer (CRC) mouse model |
Dosage form | 20 mg/kg twice per week for 90 days or 40 mg/kg per week for 100 days (dissolved in 0.2 ml of solvent containing 10% DMSO and 10% cremophor); intraperitoneal injection |
Application | In genetically engineered colorectal cancer (CRC) mouse model, TASIN-1 had a long retention time in mouse large intestinal tissue. TASIN-1 significantly reduced tumor formation in the colons. TASIN-1 did not induce obvious histological changes in livers, kidneys, or spleens of treated animals. |
Other notes | Please test the solubility of all compounds indoor, and the actual solubility may slightly differ with the theoretical value. This is caused by an experimental system error and it is normal. |
References: [1] Lu Zhang, Panayotis C. Theodoropoulos, Ugur Eskiocak, et al. Selective targeting of mutant adenomatous polyposis coli (APC) in colorectal cancer. Science Translational Medicine 19 Oct 2016: Vol. 8, Issue 361, pp. 361ra140. | |
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| Cas No. | N/A | SDF | Download SDF |
| Synonyms | N/A | ||
| Chemical Name | 1"-((4-methoxyphenyl)sulfonyl)-4-methyl-1,4"-bipiperidine | ||
| Canonical SMILES | CC1CCN(C2CCN(S(C3=CC=C(OC)C=C3)(=O)=O)CC2)CC1 | ||
| Formula | C18H28N2O3S | M.Wt | 352.49 |
| Solubility | ≥35.2mg/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. | ||
TASIN-1 is a small molecule inhibitor of mutant adenomatous polyposis coli (APC) [1].
Adenomatous polyposis coli (APC) is a multifunctional tumor suppressor gene that is mutated in more than 80% of colon tumors. APC plays an important role in the negative regulation of canonical WNT signaling pathway through proteasomal degradation of b-catenin. APC is involved in cell cycle control, migration, differentiation, and apoptosis [1].
TASIN-1 is a selective inhibitor of mutant APC. In two authentic human CRC cell lines HCT116 (WT APC) and DLD1 (truncated APC1417), TASIN-1 exhibited potent and selective toxicity toward DLD1 cells with IC50 value of 70 nM but not toward HCT116 cells (IC50 >50 μM). TASIN-1 also reduced the endogenous cholesterol biosynthesis rate. TASIN-1 exerted its killing effects primarily by depleting cholesterol through inhibition of emopamil-binding protein (EBP) activity. However, knockdown of truncated APC (>90%) expression desensitized DLD1 cells to TASIN-1, suggesting that APC is required for TASIN-1’s cytotoxicity [1].
In nude mice with established DLD1 and HT29 tumors, intraperitoneal injection of TASIN-1 twice daily for 18 days reduced the size of tumor xenografts and tumor growth rates. TASIN-1 resulted in the appearance of apoptotic cells with fragmented nuclei and induced an increase in cleaved caspase 3 and cleaved PARP1. However, TASIN-1 did not inhibit tumor growth in HCT116 (WT APC) xenografts. In a genetically engineered CRC mouse model, TASIN-1 significantly reduced tumor formation in the colons of CPC;Apc mice [1].
Reference:
1.Lu Zhang, Panayotis C. Theodoropoulos, Ugur Eskiocak, et al. Selective targeting of mutant adenomatous polyposis coli (APC) in colorectal cancer. Science Translational Medicine 19 Oct 2016: Vol. 8, Issue 361, pp. 361ra140.
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培养一段时间后（一般小于一个细胞周期），固定细胞。根据所使用模拟核苷酸的不同，使用不同的方法。EdU，改变缓冲液的pH值，就会发出荧光。而BrdU则需用荧光抗体识别，需要对细胞膜和核膜进行通透处理。
再加入PI对DNA染色。
在二维坐标图上，横坐标设为线性PI荧光强度，纵坐标设为模拟核苷酸的荧光强度（log）。
典型的图就像下面一样：
G1, G2 和S期就按照图中的划分来做。G1期的细胞没有新合成DNA，所以BrdU信号是阴性，而PI的信号位于1倍体期。S期是正在合成DNA，所以BrdU都是阳性。G2期是已经合成好了2倍的DNA，所以位于2倍体期，信号是G1期的一倍。这个图中，G1 PI信号是300， G2就是600.
流式细胞仪（Flow cytometry ）是对细胞进行自动分析和分选的装置。它可以快速测量、存贮、显示悬浮在液体中的分散细胞的一系列重要的生物物理、生物化学方面的特征参量，并可以根据预选的参量范围把指定的细胞亚群从中分选出来。多数流式细胞计是一种零分辨率的仪器，它只能测量一个细胞的诸如总核酸量，总蛋白量等指标，而不能鉴别和测出某一特定部位的核酸或蛋白的多少。也就是说，它的细节 分辨率为零。
染色的各种染料，标记好的荧光抗体染色所需要的缓冲液，封闭液，PBS最终由于上样的缓冲液
不过还要考虑很多因素：标记的方法会不会影响细胞下面的培养细胞是否能够耐受长时间接触房间中的氧气和二氧化碳的浓度机器的无菌情况
（溶血）：红细胞，血红蛋白分解，红细胞溶解逃逸所述，称为溶血。通过各种物理和化学因素和毒素。在体外，如低渗溶液中，强烈的机械振荡，突然冷冻（-20℃-25℃）或突然化冻，过酸或过碱，以及乙醇，乙醚，皂碱，胆碱盐可引起溶血。人血浆的等渗溶液为0.9％NaCl溶液，红细胞在低于0.45％的NaCl溶液中，由于水的渗透，肿胀和红细胞破裂，血红蛋白逸出。在体内，溶血溶血性细菌侵入或某些毒素的抗原 - 抗体反应（如输入配血不合的血液），各种机械性损伤，红细胞内在（膜，酶）引起某些药物的缺陷。溶血性细菌，如某些溶血性链球菌和产气荚膜梭菌可导致败血症。的红血细胞和某些溶血性毒液含酶卵磷脂，卵磷脂血浆或红细胞成溶血卵磷脂，使红细胞膜分解疟原虫破坏。
比较常用的是用计数微球。比如临床上的CD4细胞绝对计数，就是采用这个方法。试管内事先已经有固定数目的计数微球和染色抗体。按要求加入固定体积的抗凝血液，裂解红细胞后上机。记录一千个微球，同时就会得到不同染色区域细胞的数量。这样就可以算出单位体积血液内CD4细胞的绝对数目了。
这样的计数微球也可以另外购买。浓度是固定的。在你已知体积的细胞悬液中加入一定体积的微球后上机，记录一千个微球的数据，细胞的计数也会同时记录。根据微球的浓度就可以推算出细胞的浓度，从而得出绝对计数了
另外一个方法是有些流式细胞仪是使用微泵加样，而不是连续吸取样本，这样样本的体积是已知的，记录一次就是所有样本的数量，可以算出细胞浓度
