TPC2-A1-N
目录号 : GC61342
TPC2-A1-N是一种亲脂性的、膜透异位选择性双孔通道2（TPC2)小分子激动剂。TPC2-A1-N通过在独立结合位点模拟NAADP和PI(3,5)P2的生理作用发挥作用。TPC2-A1-N对溶酶体活性有反向作用，并以TPC2依赖的方式增加溶酶体腔内的pH。
Cas No.:136186-07-7
Sample solution is provided at 25 µL, 10mM.
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Quality Control & SDS
- View current batch:
- Purity: >99.50%
- COA (Certificate Of Analysis)
- SDS (Safety Data Sheet)
- Datasheet
TPC2-A1-N is a novel, lipophilic, membrane permeable isoform-selective small molecule agonist of two-pore channel 2 (TPC2). TPC2-A1-N plays its role by mimicking the physiological actions of NAADP and PI(3,5)P2 through independent binding sites. TPC2-A1-N has inverse effects on key lysosomal activities and increases the pH in the lysosomal lumen in a TPC2-dependent manner[1].
Two-pore channels (TPC1-3) are ancient members of the voltage-gated ion channel superfamily. TPCs are expressed throughout the endo-lysosomal system and regulates the trafficking of various cargoes.TPC2 can mediate different physiological and possibly pathophysiological effects depending on how it is activated. The ion selectivity of TPC2 is not fixed but rather agonist-dependent. TPC2 is a unique example of an ion channel that conducts different ions in response to different activating ligands.TPC2-A1-N (10 μM) reproducibly evokes Ca2+ signals, and TPC2-A1-N response reachs its plateau faster than TPC2-A1-P. The EC50 in full concentration-effect relationships for the plateau response is 7.8 μM for TPC2-A1-N in a cell line stably expressing TPC2L11A/L12A.TPC2-A1-N (10 μM) evokes Ca2+ influx through the TPC2 pore evokes Ca2+ signals in cells expressing TPC2L11A/L12A but not TPC2L11A/L12A/L265P. Additionally, the responses to TPC2-A1-N can be selectively blocked by the identified TPC2 blockers Tetrandrine , Raloxifene , and Fluphenazine by removal of extracellular Ca2+[1].In endo-lysosomal patch-clamp experiments, TPC2-A1-N (30 μM) elicits currents using Na+ as the major permeant ion, in vacuolin-enlarged endo-lysosomes isolated from isolated from HEK293 cells transiently expressing human TPC2 (hTPC2) but not in cells expressing TPC1[1].In endo-lysosomal patch-clamp experiments, TPC2-A1-N (30 μM) induces larger currents in endo-lysosomes isolated from cells expressing a gain-of-function variant of TPC2 (TPC2M484L) compared to the wild-type isoform, and exhibits an EC50 value of 0.6 μM for TPC2-A1-N[1].
[1]. Susanne Gerndt, et al. Agonist-mediated switching of ion selectivity in TPC2 differentially promotes lysosomal function. Elife
| Cas No. | 136186-07-7 | SDF | |
| Canonical SMILES | O=C(NC1=CC=C(C(F)(F)F)C=C1)/C(C#N)=C(C2=CC(Cl)=CC(Cl)=C2)\O | ||
| 分子式 | C17H9Cl2F3N2O2 | 分子量 | 401.17 |
| 溶解度 | 储存条件 | Store at -20°C | |
| General tips | 请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。 储备液的保存方式和期限：-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。 为了提高溶解度，请将管子加热至37℃，然后在超声波浴中震荡一段时间。 |
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| Shipping Condition | 评估样品解决方案：配备蓝冰进行发货。所有其他可用尺寸：配备RT，或根据请求配备蓝冰。 | ||
| 制备储备液 | |||
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1 mg | 5 mg | 10 mg |
| 1 mM | 2.4927 mL | 12.4635 mL | 24.9271 mL |
| 5 mM | 0.4985 mL | 2.4927 mL | 4.9854 mL |
| 10 mM | 0.2493 mL | 1.2464 mL | 2.4927 mL |
| 第一步：请输入基本实验信息（考虑到实验过程中的损耗，建议多配一只动物的药量） | ||||||||||
| 给药剂量 | mg/kg |  |
动物平均体重 | g | |
每只动物给药体积 | ul | |
动物数量 | 只 |
| 第二步：请输入动物体内配方组成（配方适用于不溶于水的药物；不同批次药物配方比例不同，请联系GLPBIO为您提供正确的澄清溶液配方） | ||||||||||
| % DMSO % % Tween 80 % saline | ||||||||||
| 计算重置 | ||||||||||
计算结果:
工作液浓度： mg/ml；
DMSO母液配制方法： mg 药物溶于 μL DMSO溶液（母液浓度 mg/mL，
体内配方配制方法：取 μL DMSO母液，加入 μL PEG300，混匀澄清后加入μL Tween 80，混匀澄清后加入 μL saline，混匀澄清。
1. 首先保证母液是澄清的；
2.
一定要按照顺序依次将溶剂加入，进行下一步操作之前必须保证上一步操作得到的是澄清的溶液，可采用涡旋、超声或水浴加热等物理方法助溶。
3. 以上所有助溶剂都可在 GlpBio 网站选购。
The name tells the story: Two-pore channels
Cell Calcium 2020 Jul;89:102215.PMID:32442744DOI:10.1016/j.ceca.2020.102215.
TPC2-A1-N and TPC2-A1-P, two novel small molecules, differentially activate two-pore channel 2 (TPC2) and mimic the activation of TPC2 with NAADP and PIP2, resulting in distinct ion channel selectivities. These two different modes of TPC2 activity have physiological, and possibly pathophysiological, implications as they can modulate vesicle trafficking and lysosomal exocytosis.
Endolysosomal TPCs regulate social behavior by controlling oxytocin secretion
Proc Natl Acad Sci U S A 2023 Feb 14;120(7):e2213682120.PMID:36745816DOI:10.1073/pnas.2213682120.
Oxytocin (OT) is a prominent regulator of many aspects of mammalian social behavior and stored in large dense-cored vesicles (LDCVs) in hypothalamic neurons. It is released in response to activity-dependent Ca2+ influx, but is also dependent on Ca2+ release from intracellular stores, which primes LDCVs for exocytosis. Despite its importance, critical aspects of the Ca2+-dependent mechanisms of its secretion remain to be identified. Here we show that lysosomes surround dendritic LDCVs, and that the direct activation of endolysosomal two-pore channels (TPCs) provides the critical Ca2+ signals to prime OT release by increasing the releasable LDCV pool without directly stimulating exocytosis. We observed a dramatic reduction in plasma OT levels in TPC knockout mice, and impaired secretion of OT from the hypothalamus demonstrating the importance of priming of neuropeptide vesicles for activity-dependent release. Furthermore, we show that activation of type 1 metabotropic glutamate receptors sustains somatodendritic OT release by recruiting TPCs. The priming effect could be mimicked by a direct application of nicotinic acid adenine dinucleotide phosphate, the endogenous messenger regulating TPCs, or a selective TPC2 agonist, TPC2-A1-N, or blocked by the antagonist Ned-19. Mice lacking TPCs exhibit impaired maternal and social behavior, which is restored by direct OT administration. This study demonstrates an unexpected role for lysosomes and TPCs in controlling neuropeptide secretion, and in regulating social behavior.
The lysosomotrope GPN mobilises Ca2+ from acidic organelles
J Cell Sci 2021 Mar 11;134(6):jcs256578.PMID:33602742DOI:10.1242/jcs.256578.
Lysosomes are acidic Ca2+ stores often mobilised in conjunction with endoplasmic reticulum (ER) Ca2+ stores. Glycyl-L-phenylalanine 2-naphthylamide (GPN) is a widely used lysosomotropic agent that evokes cytosolic Ca2+ signals in many cells. However, whether these signals are the result of a primary action on lysosomes is unclear in light of recent evidence showing that GPN mediates direct ER Ca2+ release through changes in cytosolic pH. Here, we show that GPN evoked rapid increases in cytosolic pH but slower Ca2+ signals. NH4Cl evoked comparable changes in pH but failed to affect Ca2+ The V-type ATPase inhibitor, bafilomycin A1, increased lysosomal pH over a period of hours. Acute treatment modestly affected lysosomal pH and potentiated Ca2+ signals evoked by GPN. In contrast, chronic treatment led to more profound changes in luminal pH and selectively inhibited GPN action. GPN blocked Ca2+ responses evoked by the novel nicotinic acid adenine dinucleotide phosphate-like agonist, TPC2-A1-N. Therefore, GPN-evoked Ca2+ signals were better correlated with associated pH changes in the lysosome compared to the cytosol, and were coupled to lysosomal Ca2+ release. We conclude that Ca2+ signals evoked by GPN most likely derive from acidic organelles.