| 规格 | 价格 | 库存 | 数量 |
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| 100mg |
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| 250mg |
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| 500mg |
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| 靶点 |
DNA
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|---|---|
| 体外研究 (In Vitro) |
细胞外DNA,也称为无细胞DNA,是从死亡细胞或激活的免疫细胞释放出来的,可被免疫系统识别为引起或增强炎症的危险信号。细胞外DNA的分裂对于限制炎症反应和维持体内平衡至关重要。脱氧核糖核酸酶(DNA酶)作为降解DNA的酶被假设在这一过程中发挥关键作用,作为细胞外DNA浓度变化的决定因素。根据其生物化学和生物学特性以及组织特异性的产生,dna酶分为两大家族:DNase I和DNase II。研究表明,低DNase活性是系统性红斑狼疮的生物标志物和致病因素。介入实验证明外源性dna酶对炎性疾病有有益作用。重组人dna酶降低肺部粘液粘度,用于治疗囊性纤维化患者。本文综述了目前已发表的关于dna酶的资料,以及它们作为潜在生物标志物的活性和用于评估它们的方法。还包括对系统给药DNase的实验概述。低血浆dna酶活性是否参与疾病的发病机制尚不清楚,需要进一步阐明。[1]
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| 体内研究 (In Vivo) |
除了抑制肝转移外,脱氧核糖核酸酶(0.1 U;腹膜内注射;每天一次,持续 3 天)与主要肿瘤块的手术切除相结合可延长生存时间[1]。
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| 动物实验 |
Animal/Disease Models: Female BALB/cx DBA/2 mice with murine tumor L5178Y-ML cells subcutaneous (sc) injection[1]
Doses: 0.1 U per mouse Route of Administration: intravenous (iv) injection; 0.1 U; one time/day for three days Experimental Results: decreased liver weight from 2.26 to 1.55 g, affected the intensity of liver metastasis, decreased the numbers and sizes of metastatic and affected tumor cell arrest. Animal/Disease Models: Female BALB/cx DBA/2 mice with murine tumour and surgical removal of subcutaneous (sc) tumours[1] Doses: 0.1 U per mouse Route of Administration: intravenous (iv) injection; 0.1 U; one time/day for 3 days either before or after primary tumor removal Experimental Results: Dramatically prolongated survival after tumor cell inoculation compared to the untreated group. |
| 参考文献 | |
| 其他信息 |
Murine L5178Y-ML cells, when transplanted subcutaneously into the flank of (BALB/c x DBA/2)F1 mice, grew locally and always formed spontaneous metastases in the liver. Even after surgical removal of the primary tumour mass 5 or 7 days after tumour cell inoculation, all mice died due to liver metastases within 18 days. Using this model of tumour metastasis, we examined whether serine protease or deoxyribonuclease I (DNase I) would affect metastasis. Spontaneous liver metastasis of L5178Y-ML cells was enhanced by systemic administration of alpha-chymotrypsin at 3, 4 and 5 days or at 5, 6 and 7 days after tumour cell inoculation. This result was consistent with a previous report on blood-borne lung metastasis. In contrast, systemic administration of DNase I at 3, 4 and 5 days or at 5, 6 and 7 days after tumour cell inoculation inhibited liver metastasis. Neither treatment affected primary tumour growth. An influence of DNase I on tumour cell arrest in the microvasculature of the liver was suggested by scanning electron microscopy. DNase I treatment resulted in a statistically significant prolongation of the survival period, however, the effect was not satisfactory. A more striking anti-metastatic treatment resulting in a greater prolongation of the survival period was achieved by combining surgical removal of the primary tumour mass with DNase I treatment. These results suggest that DNase I could be a potential therapeutic agent used in conjunction with surgery to prevent clinical blood-borne metastasis.[2]
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| 分子式 |
C12H22N4O6
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|---|---|
| 分子量 |
318.32628
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| CAS号 |
9003-98-9
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| 外观&性状 |
Off-white to light yellow solid powder
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| 密度 |
100 g/mL at 20 °C
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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 |
| 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) |
DMSO: 43.48 mg/mL
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|---|---|
| 溶解度 (体内实验) |
配方 1 中的溶解度: ≥ 2.5 mg/mL (Infinity 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 (Infinity 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。 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 900 μL 玉米油中并混合均匀。 View More
配方 3 中的溶解度: 5 mg/mL (Infinity mM) in Saline (这些助溶剂从左到右依次添加,逐一添加), 悬浮液; 超声助溶 (<60°C). 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 | 3.1414 mL | 15.7070 mL | 31.4139 mL | |
| 5 mM | 0.6283 mL | 3.1414 mL | 6.2828 mL | |
| 10 mM | 0.3141 mL | 1.5707 mL | 3.1414 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) 。