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| 靶点 |
The target of TPI-1 is Src homology region 2 domain-containing phosphatase 1 (SHP-1, also known as Protein Tyrosine Phosphatase, Non-Receptor Type 6). It inhibits recombinant SHP-1 at low nM concentrations , and has little inhibitory effect on SHP-2 or MKP1 phosphatases [1]
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| 体外研究 (In Vitro) |
SHP-1 已被确定为一种可能的癌症治疗靶点。随着 SHP-1 磷酸盐底物 pLck-pY394 的增加,TPI-1 在 10 ng/mL 时变得有效。 TPI-1 对 pERK1/2 和 pLck-pY505 有轻微影响,但它优先增加 Jurkat T 细胞中的 SHP-1 磷酸底物(pLck-pY394、pZap70 和 pSlp76)。 TPI-1 刺激人外周血和小鼠脾脏中的 IFNγ+ 细胞 [1]。
1. TPI-1在低纳摩尔浓度下,可在Jurkat T细胞中选择性上调SHP-1的磷酸化底物(pLck-pY394、pZap70、pSlp76)水平,而对由SHP-2调控的pERK1/2或由CD45调控的pLck-pY505几乎无影响[1] 2. 在体外磷酸酶活性实验中,TPI-1以剂量递增的方式抑制重组SHP-1的活性,但即使在较高浓度下,对重组SHP-2或MKP1也未表现出显著抑制作用[1] 3. TPI-1在体外可诱导小鼠脾细胞产生IFN-γ⁺细胞,经ELISPOT实验定量,其效价比葡萄糖酸锑钠(SSG)高约58倍[1] 4. 该化合物在体外培养的人外周血细胞中孵育16小时后,同样可诱导IFN-γ⁺细胞产生,通过ELISPOT检测证实[1] 5. TPI-1对体外培养的Jurkat T细胞几乎无细胞毒性(经6天处理后通过MTT实验评估),且对体外培养5天的B16黑色素瘤细胞生长也无显著抑制作用[1] |
| 体内研究 (In Vivo) |
TPI-1 对培养物中的 B16 细胞增殖没有影响,但在可耐受的口服剂量下,它以 T 细胞依赖性方式减少小鼠 B16 黑色素瘤的形成。因此,TPI-1 还会提高小鼠体内的 IFNγ+ 和 pLck-pY394。作为一种耐受性良好的 SC 药物,TPI-1 还可以预防 B16 肿瘤的形成并延长肿瘤小鼠的寿命[1]。
1. 给接种5×10⁴个B16细胞、已建立4天肿瘤模型的C57BL/B6小鼠,口服给予TPI-1(3 mg/kg,每日一次,每周5天),可在T细胞依赖的方式下抑制约83%的肿瘤生长(p < 0.002);而在裸鼠(T细胞缺陷)中采用相同给药方案,未观察到显著的肿瘤抑制效果[1] 2. 给接种10⁵个B16细胞、已建立4天肿瘤模型的C57BL/B6小鼠,皮下给予TPI-1(1 mg/kg,每日一次,每周5天),同样能抑制肿瘤生长并延长荷瘤小鼠的生存期[1] 3. TPI-1(1或3 mg/kg,皮下注射,每日一次)可在体内上调小鼠脾细胞中pLck-pY394的水平(通过蛋白质印迹/光密度分析定量),并增加脾中IFN-γ⁺细胞的数量(通过ELISPOT检测)[1] 4. 葡萄糖酸锑钠(SSG,12 mg/天,每周5天,皮下注射)对小鼠B16肿瘤的抑瘤效果弱于TPI-1[1] 5. 白细胞介素-2(IL-2,3×10⁵ IU,每日两次,每周5天,腹腔注射)对小鼠B16肿瘤的抑瘤作用有限,而在实验条件下TPI-1表现出更优的疗效[1] |
| 酶活实验 |
1. 重组SHP-1/2/MKP1磷酸酶活性实验:将重组SHP-1、SHP-2或MKP1酶与递增剂量的TPI-1在适宜的反应缓冲液中,于优化后的实验条件下孵育。利用磷酸酶底物检测系统(具体底物未详述)对磷酸酶活性进行定量,通过对比加药组与溶媒对照组的酶活性,确定TPI-1对各磷酸酶的抑制效果(实验数据为三次重复的平均值±标准差)[1]
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| 细胞实验 |
1. Jurkat T细胞磷酸化底物分析实验:将Jurkat细胞在标准培养基中培养,并用溶媒对照或不同剂量的TPI-1处理10分钟。制备细胞总裂解液(TCL),通过SDS-PAGE/蛋白质印迹法,采用抗pLck-pY394、pZap70、pSlp76、pERK1/2和pLck-pY505的抗体,分析TPI-1对SHP-1磷酸化底物的选择性作用[1]
2. Jurkat细胞活力实验:将Jurkat细胞在无/有TPI-1的条件下培养6天,通过MTT实验定量细胞生长/活力,数据以三次重复的平均值±标准差表示[1] 3. IFN-γ⁺细胞诱导实验(小鼠脾细胞/人外周血):分离小鼠脾细胞或人外周血细胞,在体外与溶媒对照、TPI-1或SSG共同培养16小时,通过ELISPOT实验定量IFN-γ⁺细胞的数量(数据为两次重复的平均值±标准差)[1] 4. B16黑色素瘤细胞增殖实验:将B16细胞与TPI-1共同培养5天,通过MTT实验评估细胞生长情况(数据为三次重复的平均值±标准差)[1] |
| 动物实验 |
TPI-1 (~ 1 or 3 mg/kg, s.c.) for 4 days
mice (6~8-week old, female) #### Animal Protocol 1. B16 Melanoma Tumor Model (Oral Administration): C57BL/B6 mice (n=5) were inoculated with 5×10⁴ B16 cells subcutaneously to establish tumors for 4 days. TPI-1 was administered orally at a dose of 3 mg/kg daily (5 days/week) for the experimental period. Tumor volumes were measured regularly to assess anti-tumor efficacy; body weights were monitored to evaluate tolerability [1] 2. B16 Melanoma Tumor Model (Subcutaneous Administration): C57BL/B6 mice (n=5) were inoculated with 10⁵ B16 cells subcutaneously for 4 days. TPI-1 was administered subcutaneously at 1 mg/kg daily (5 days/week). Tumor volumes and mouse survival rates were recorded; nude mice (T cell-deficient) were used as a control group to confirm T cell-dependence of the anti-tumor effect [1] 3. Splenic IFN-γ⁺ Cell and Phospho-Substrate Analysis in Mice: Mice were treated with TPI-1 (1 or 3 mg/kg, s.c., daily) for a specified period. Splenocytes were isolated to prepare total cell lysates for Western blot analysis of pLck-pY394 levels and to perform ELISPOT assays for IFN-γ⁺ cell quantification [1] 4. SSG/IL-2 Control Treatments in B16 Tumor Mice: Mice bearing B16 tumors were treated with SSG (12 mg daily, 5 d/wk, s.c.) or IL-2 (3×10⁵ IU, twice daily, 5 d/wk, i.p.) as positive/negative controls, with tumor volumes measured for comparison to TPI-1 [1] 5. Toxicity Assessment in Mice: Balb/c mice were treated with TPI-1 (~10 mg/kg, s.c., daily, 5 d/wk) for two weeks, and mouse viability/body weight was monitored to evaluate acute toxicity [1] |
| 毒性/毒理 (Toxicokinetics/TK) |
1. TPI-1 was well-tolerated in mice at oral doses of 3 mg/kg (5 d/wk) and subcutaneous doses of 1 mg/kg or ~10 mg/kg (5 d/wk for two weeks), with no significant weight loss or mortality observed in treated mice [1]
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| 参考文献 | |
| 其他信息 |
1. TPI-1 is a novel SHP-1 inhibitor identified from a library of 34,000 drug-like compounds, with preclinical anti-tumor activity mediated primarily via an immune mechanism (T cell-dependent induction of IFN-γ⁺ cells) rather than direct cytotoxicity against tumor cells [1]
2. SHP-1 is a negative regulator of immune cell activation, and inhibition of SHP-1 by TPI-1 enhances T cell signaling (via increased pLck-pY394, pZap70, pSlp76) and IFN-γ production, leading to anti-tumor immune responses [1] 3. TPI-1 analogs (e.g., TPI-1a4) were developed with improved anti-tumor efficacy; TPI-1a4 completely inhibited K1735 melanoma tumor growth in mice at a tolerated oral dose and was more effective than TPI-1 against MC-26 colon cancer tumors [1] |
| 分子式 |
C₁₂H₆CL₂O₂
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|---|---|---|
| 分子量 |
253.08
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| 精确质量 |
251.974
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| CAS号 |
79756-69-7
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| 相关CAS号 |
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| PubChem CID |
948589
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| 外观&性状 |
White to yellow solid powder
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| LogP |
3.084
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| tPSA |
34.14
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| 氢键供体(HBD)数目 |
0
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| 氢键受体(HBA)数目 |
2
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| 可旋转键数目(RBC) |
1
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| 重原子数目 |
16
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| 分子复杂度/Complexity |
385
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| 定义原子立体中心数目 |
0
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| InChi Key |
ZKHFYORNAYYOTM-UHFFFAOYSA-N
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| InChi Code |
InChI=1S/C12H6Cl2O2/c13-7-1-3-11(14)9(5-7)10-6-8(15)2-4-12(10)16/h1-6H
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| 化学名 |
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| 别名 |
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| HS Tariff Code |
2934.99.9001
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| 存储方式 |
Powder -20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month |
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| 运输条件 |
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
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| 溶解度 (体外实验) |
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| 溶解度 (体内实验) |
配方 1 中的溶解度: ≥ 2.5 mg/mL (9.88 mM) (饱和度未知) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (这些助溶剂从左到右依次添加,逐一添加), 澄清溶液。
例如,若需制备1 mL的工作液,可将100 μL 25.0 mg/mL澄清DMSO储备液加入到400 μL PEG300中,混匀;然后向上述溶液中加入50 μL Tween-80,混匀;加入450 μL生理盐水定容至1 mL。 *生理盐水的制备:将 0.9 g 氯化钠溶解在 100 mL ddH₂O中,得到澄清溶液。 配方 2 中的溶解度: ≥ 2.5 mg/mL (9.88 mM) (饱和度未知) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (这些助溶剂从左到右依次添加,逐一添加), 澄清溶液。 例如,若需制备1 mL的工作液,可将 100 μL 25.0 mg/mL澄清DMSO储备液加入900 μL 20% SBE-β-CD生理盐水溶液中,混匀。 *20% SBE-β-CD 生理盐水溶液的制备(4°C,1 周):将 2 g SBE-β-CD 溶解于 10 mL 生理盐水中,得到澄清溶液。 View More
配方 3 中的溶解度: ≥ 2.5 mg/mL (9.88 mM) (饱和度未知) in 10% DMSO + 90% Corn Oil (这些助溶剂从左到右依次添加,逐一添加), 澄清溶液。 1、请先配制澄清的储备液(如:用DMSO配置50 或 100 mg/mL母液(储备液)); 2、取适量母液,按从左到右的顺序依次添加助溶剂,澄清后再加入下一助溶剂。以 下列配方为例说明 (注意此配方只用于说明,并不一定代表此产品 的实际溶解配方): 10% DMSO → 40% PEG300 → 5% Tween-80 → 45% ddH2O (或 saline); 假设最终工作液的体积为 1 mL, 浓度为5 mg/mL: 取 100 μL 50 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中,混合均匀/澄清;向上述体系中加入50 μL Tween-80,混合均匀/澄清;然后继续加入450 μL ddH2O (或 saline)定容至 1 mL; 3、溶剂前显示的百分比是指该溶剂在最终溶液/工作液中的体积所占比例; 4、 如产品在配制过程中出现沉淀/析出,可通过加热(≤50℃)或超声的方式助溶; 5、为保证最佳实验结果,工作液请现配现用! 6、如不确定怎么将母液配置成体内动物实验的工作液,请查看说明书或联系我们; 7、 以上所有助溶剂都可在 Invivochem.cn网站购买。 |
| 制备储备液 | 1 mg | 5 mg | 10 mg | |
| 1 mM | 3.9513 mL | 19.7566 mL | 39.5132 mL | |
| 5 mM | 0.7903 mL | 3.9513 mL | 7.9026 mL | |
| 10 mM | 0.3951 mL | 1.9757 mL | 3.9513 mL |
1、根据实验需要选择合适的溶剂配制储备液 (母液):对于大多数产品,InvivoChem推荐用DMSO配置母液 (比如:5、10、20mM或者10、20、50 mg/mL浓度),个别水溶性高的产品可直接溶于水。产品在DMSO 、水或其他溶剂中的具体溶解度详见上”溶解度 (体外)”部分;
2、如果您找不到您想要的溶解度信息,或者很难将产品溶解在溶液中,请联系我们;
3、建议使用下列计算器进行相关计算(摩尔浓度计算器、稀释计算器、分子量计算器、重组计算器等);
4、母液配好之后,将其分装到常规用量,并储存在-20°C或-80°C,尽量减少反复冻融循环。
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)。如该浓度超过该批次药物DMSO溶解度,请首先与我们联系。
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 ddH2O,混匀澄清。
(1) 请确保溶液澄清之后,再加入下一种溶剂 (助溶剂) 。可利用涡旋、超声或水浴加热等方法助溶;
(2) 一定要按顺序加入溶剂 (助溶剂) 。
TPI-1 inhibits recombinant and cellular SHP-1 and had little cytotoxicity in vitro and in mice.J Immunol.2010 Jun 1;184(11):6529-36. th> |
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TPI-1 selectively increases SHP-1 phospho-substrates in Jurkat cells at low nM levels.J Immunol.2010 Jun 1;184(11):6529-36. td> |
![]() TPI-1 inhibits B16 tumor growth as a tolerated single agent.J Immunol.2010 Jun 1;184(11):6529-36. td> |
![]() TPI-1 induces IFNγ+cells in mouse splenocytes and human peripheral bloodin vitro.
TPI-1 increases spleen pLck-pY394 and IFNγ+cells in mice. th> |
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![]() TPI-1 analogs TPI-1a2 and TPI-1a4 have anti-tumors in mice at tolerated oral doses.J Immunol.2010 Jun 1;184(11):6529-36. td> |
![]() TPI-1 analogs inhibit rSHP-1 in correlation with activity to increase SHP-1 phospho-substrate pLck-pY394 in Jurkat cells and induce IFNγ+ cells in mouse splenocytes. td> |