WO2013170756A1 - 高原儿茶酸在制备抗肿瘤药物中的用途 - Google Patents
高原儿茶酸在制备抗肿瘤药物中的用途 Download PDFInfo
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- WO2013170756A1 WO2013170756A1 PCT/CN2013/075675 CN2013075675W WO2013170756A1 WO 2013170756 A1 WO2013170756 A1 WO 2013170756A1 CN 2013075675 W CN2013075675 W CN 2013075675W WO 2013170756 A1 WO2013170756 A1 WO 2013170756A1
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- 238000012360 testing method Methods 0.000 description 1
- 230000000699 topical effect Effects 0.000 description 1
- 229960005026 toremifene Drugs 0.000 description 1
- XFCLJVABOIYOMF-QPLCGJKRSA-N toremifene Chemical compound C1=CC(OCCN(C)C)=CC=C1C(\C=1C=CC=CC=1)=C(\CCCl)C1=CC=CC=C1 XFCLJVABOIYOMF-QPLCGJKRSA-N 0.000 description 1
- 231100000155 toxicity by organ Toxicity 0.000 description 1
- 230000007675 toxicity by organ Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 229960001727 tretinoin Drugs 0.000 description 1
- 210000004926 tubular epithelial cell Anatomy 0.000 description 1
- 230000005747 tumor angiogenesis Effects 0.000 description 1
- 230000008673 vomiting Effects 0.000 description 1
- 239000012991 xanthate Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/185—Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids
- A61K31/19—Carboxylic acids, e.g. valproic acid
- A61K31/192—Carboxylic acids, e.g. valproic acid having aromatic groups, e.g. sulindac, 2-aryl-propionic acids, ethacrynic acid
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
Definitions
- the invention belongs to the field of anti-tumor drugs, and particularly relates to the use of high-altitude catechin in the preparation of anti-tumor drugs. Background technique
- Tumors are the new organisms that are formed by the body under the action of various carcinogenic factors, and the cells lose their normal regulation at the genetic level, resulting in clonal dysplasia, which is a mass. Tumor cells differ from normal cells in terms of external morphology, metabolism, and function, and exhibit persistent proliferation. According to valid statistics, tumors are the first of three major factors that threaten the health of human life around the world. Therefore, the development of anti-tumor drugs has become a hot spot in recent years.
- Cytotoxic drugs including drugs that destroy DNA structure and function (such as cyclophosphamide, irinotecan), Drugs that affect the biosynthesis of nucleic acids (such as 5-fluorouracil, cytarabine, methotrexate);
- drugs that affect hormone balance including anti-estrogen drugs (such as toremifene), anti-androgens Drugs (such as bicalutamide) and aromatase inhibitors (such as letrozole);
- other and auxiliary drugs including immune function regulators (such as interleukins, interferons), biological response modifiers (such as Ero Tini, gefitinib), cell differentiation inducers (such as retinoic acid, arsenic acid), antifolate preparations (Libitai), monoclonal antibodies (such as Avastin) and adjuvant analges
- cytotoxic drugs generally cause moderate to severe digestive system reactions (such as malignant vomiting, stomatitis), myelosuppression (such as leukopenia, thrombocytopenia) and organ toxicity (such as Neurotoxicity, liver and kidney toxicity), hormone balance interference drugs can cause mild to moderate gastrointestinal reactions, reproductive system damage and even depressive symptoms in patients, most regulators and inducers can also cause different degrees of skin reactions and Liver and kidney dysfunction.
- Irinotecan Hydrochloride is commonly used in the treatment of adult metastatic colorectal cancer, but the effect is significant, but after administration, 20% of patients have gastrointestinal adverse reactions - severe diarrhea, 78.7% of patients have been neutral In neutropenia, 9% of patients develop transient acute cholinergic syndrome (Bret Wallace et al. Science, 330, 2010.; Sun Wei et al. Chinese Pharmacy, 18(35), 2007.; Wu Yuhong et al. Medicine, 14(10),
- Pemetrexed disodium is the first anti-pleural mesothelioma drug that causes bone marrow suppression in patients, including neutropenia, thrombocytopenia, anemia or various types of cytopenia, liver and kidney function. Incomplete cases are hanged (Zheng Hang et al. Cancer Research, 34(4), 2007.; Wang Jianying et al. Chinese and Foreign Health Digest, 12,
- Bevacizumab (Avastin) is a monoclonal antibody to vascular endothelial growth factor VEGF that reduces microvascular production and inhibits the progression of metastatic lesions by binding to VEGF and preventing its binding to receptors on the surface of endothelial cells. But its side effects are obvious, including gastrointestinal perforation, wound cracking syndrome, out Blood, hypertensive crisis, nephrotic syndrome, and congestive heart failure (Eric 0. Gamboa et al. Clinical Colorectal Cancer, 9(1), 2010.; A Mailliez et al. British Journal of Cancer, 103, 2010.; Sanjaykumar Ha ani et al. Oncology, 79, 2010. ).
- anti-tumor Chinese medicines have less damage to the body.
- the mechanism of anti-tumor Chinese medicine mainly involves cytotoxicity, improving immunity, inducing tumor cell apoptosis and differentiation, and inhibiting tumor angiogenesis.
- anti-tumor Chinese medicine can be divided into the following categories: 1. Detoxification, such as Astragalus and Daqingye; 2. Blood-activating and stasis-like, such as rhubarb and Salvia; 3.
- Fuzheng Peiben Such as ginseng, astragalus, asparagus; four, phlegm and stagnation, such as Pinellia, melon, Tiannanxing; 5, Lishui and dampness, such as scorpion, psyllium, buckwheat; 6, topical drugs, such as Realgar, horse money.
- Huang Yaozi the chemical constituents of the commonly used traditional Chinese medicine
- Huang Yaozi include xanthate, saponin, tannin, huangzisu and diosgenin, although the yellow medicinal herb has been confirmed by a large number of in vivo and external experiments to have antitumor activity, and has a significant dose-effect relationship.
- it is not clear which one or several components play a role and its anti-tumor mechanism (Lin Fang et al. Asia-Pacific Traditional Medicine, 10, 2011.; Yu Zelan et al. Chinese Journal of Traditional Chinese Medicine, 6, 2004), so Huang Yaozi The single component is rarely used for anti-tumor research.
- the long-term use of the yellow medicinal herbs can produce obvious toxic and side effects, which can cause an increase in glycogen in the liver cells, steatosis, and even focal necrosis, which can also cause degeneration and necrosis of renal tubular epithelial cells.
- the possible reason is that the yellow medicinal herb directly damages the liver and kidney cells, and the glucose-6-phosphatase and succinate dehydrogenase activities are inhibited.
- the specific toxic components are not clear. The relationship between the toxic components of the medicinal herbs and the active ingredients remains to be further studied.
- Plateau catechin (alias 3, 4-dihydroxyphenylacetic acid; English name 3,4-dihydroxyphenylacetic acid, homoprotocatechuic acid DOPAC, etc.; abbreviated as DO) has a molecular formula of C 8 H 8 0 4 and a molecular weight of 168.15.
- Plateau catechins are derived from a variety of traditional Chinese medicines, such as the primrose branch of the genus Lobelia, iLysimachia vulgaris L. Senecio cannabifolius var integrilifolius (Koidz.) Kitam. The genus Lysimachia is widely distributed, but there are few reports on pharmacology and clinical aspects.
- the compound is derived from a natural medicine and can effectively inhibit various tumors, and can be used for the prevention and/or treatment of various tumors in the clinic.
- the pharmaceutically acceptable salt is preferably a sodium salt, a potassium salt, a magnesium salt, a calcium salt or an ammonium salt.
- the tumor is preferably a solid tumor.
- the tumor is more preferably selected from the group consisting of lung cancer, breast cancer, cervical cancer, rhabdomyosarcoma, nasopharyngeal cancer, pancreatic cancer, laryngeal cancer, skin cancer, liver cancer, neuroblastoma, nephroblastoma and One or more of adrenal cortical tumors; in particular, one or more of lung cancer, breast cancer, cervical cancer, nephroblastoma, nasopharyngeal carcinoma, laryngeal cancer, and neuroblastoma.
- the medicament is in any of the clinically acceptable dosage forms.
- the dosage form includes a preparation for parenteral administration and a preparation for parenteral administration.
- the gastrointestinal administration preparation is selected from the group consisting of powders, tablets, granules, pills, capsules, emulsions or suspensions.
- the parenteral administration preparation is selected from the group consisting of an injection, a spray, a suppository, a suppository, a perfusion, a patch or an ointment.
- the injection is selected from the group consisting of an intravenous preparation, an intraperitoneal injection, or a subcutaneous injection.
- catechin can significantly inhibit the occurrence and invasion of solid tumors, especially lung cancer, breast cancer, cervical cancer, nephroblastoma, nasopharyngeal carcinoma, laryngeal cancer, neuroblastoma and the like.
- solid tumors especially lung cancer, breast cancer, cervical cancer, nephroblastoma, nasopharyngeal carcinoma, laryngeal cancer, neuroblastoma and the like.
- Apoptosis flow assay was used to detect lung cancer cells A549, nephroblastoma cell line G401 and laryngeal carcinoma cell line Hep2 for about 24 hours, respectively, and then detect apoptosis. It was found that plateau catechin had a significant effect on the apoptosis of the above tumor cells, suggesting that plateau catechin may exert anti-tumor effects by mediating apoptosis of tumor cells.
- Figure 1 shows the effect of high altitude catechin on tumor cell migration (Transwell assay).
- Figure 2 shows the effect of high altitude catechin on tumor cell migration (Scratch Analysis).
- Figure 3 shows the effect of high altitude catechin on tumor cell apoptosis, among which:
- 3C Effect of high altitude catechin on apoptosis of laryngeal carcinoma cell line Hep2.
- Figure 4 shows the results of in vivo experiments with high altitude catechin antitumor, of which:
- Triazolan (3-(4, 5-dimethylthiazole-2)-2, 5-diphenyltetrazolium bromide, MTT) experiment, plateau catechin (DO) (dose gradient is 10 mg/ml, 1 mg/ml, 100 g/ml, 10 g/ml, lg/ml, 100 ng/ml) treated lung cancer cells A549, lung cancer cells LLC, nephroblastoma cells G401, nasopharyngeal carcinoma cells, respectively CNE2Z and laryngeal carcinoma cells Hep2, rhabdomyosarcoma cell A204, breast cancer cells MDA23 breast cancer cells T47D, breast cancer cells MCF7, pancreatic cancer cells PANC1, neuroblastoma cells SY5Y and cervical cancer cells Hela 24 hours, MTT staining for 4 hours, Dimethyl sulfoxide (DMSO) was dissolved, the absorbance value was measured at 570 nm, the compound gradient was plotted on the abscissa
- high altitude catechin has a particularly significant inhibitory effect on the migration of tumor cells such as lung cancer, cervical cancer cells and breast cancer.
- tumor cells such as lung cancer, cervical cancer cells and breast cancer.
- Example 3 Effect of high altitude catechin on tumor cell apoptosis
- Apoptosis flow assay was used to treat human lung cancer cells (A549), nephroblastoma cells (G401) and laryngeal carcinoma cells (Hep2) for 24 hours, respectively, after 10 ⁇ plate catechin (DO).
- the cells were collected (1500 rpm, 5 min), resuspended in PBS for 2 times, then stained with Annexin-V FITC and PI for 15 min, respectively.
- Flow cytometry was used to detect the percentage of apoptotic cells, early apoptosis and late apoptosis. The sum of the percentage of cells and the total ratio of apoptosis.
- Plateau catechin (DO) has a significant effect on the apoptosis of A549, G401 and Hep2 cells, suggesting that plateau catechin (DO) may play an anti-tumor role by mediating apoptosis of tumor cells.
- the specific results are shown in Figures 3A-3C.
- the above in vitro anti-tumor effect test results indicate that plateau catechins proliferate lung cancer, nephroblastoma, nasopharyngeal carcinoma, laryngeal cancer, breast cancer, cervical cancer, neuroblastoma, skin cancer, pancreatic cancer, rhabdomyosarcoma cells, Migration has a significant inhibitory effect.
- mice were randomly divided into three groups: model control group (only inoculated with tumor blocks without administration), plateau catechin pre-administration group (administered on the day of inoculation of tumor block, 200 mg/kg, intraperitoneal injection), Plateau catechin administration group (tumor volume) Dosage at 70-100 mm 3 or more, 300 mg/kg, intraperitoneal injection, 5-6 per group.
- Tumor planting technique was used to inoculate mouse lung cancer cells (LLC), human breast cancer cells (MDA231) and human cervical cancer cells (Hela) in the right axilla of nude mice. Tumor volume and body weight of nude mice were measured regularly.
- the plateau catechin administration group started intraperitoneal injection (IP) plateau catechin, and after 14 days, all nude mice were sacrificed, the tumor pieces were removed, and the tumor weight and volume were measured. The tumor inhibition rate of each treatment group was calculated.
- IP intraperitoneal injection
- Plateau catechin can significantly inhibit the growth and metastasis of lung cancer, breast cancer and cervical cancer. The specific results are shown in Tables 2A-2C and 4A-Fig. 4C.
- A. LLC tumor growth rate is fast, the volume reaches 100 mm 3 is about 12 days;
- MDA231 cells are of human origin. Compared with LLC tumors, the tumor formation time in nude mice is slower, and the volume reaches 70 mm 3 and is about 18 days.
- Hela cells are of human origin. Compared with LLC tumors, the tumor formation time in nude mice is slower, and the volume reaches 70 mm 3 and is about 20 days.
- Body weight of nude mice (g) 19.95 ⁇ 0.51 20.04 ⁇ 0.39 20.11 ⁇ 0.35
- Tumor inhibition rate (%) 0 28.19 20.54
- the control group plateau catechin pre-administration group plateau catechin administration group LI amount (mg/kg) 0 200 300 nude mouse weight (g) 19.97 ⁇ 0.51 20.26 ⁇ 0.43 20.07 ⁇ 0.49 tumor weight (g) 1.69 ⁇ 0.19 0.77 ⁇ 0.12** 1.10 ⁇ 0.16** Tumor inhibition rate (%) 0 54.43 34.95
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Abstract
本发明提供高原儿茶酸或其药学上可接受的盐、溶剂化物或多晶型体在制备预防和/或治疗肿瘤的药物中的用途。体内外实验表明,高原儿茶酸能够抑制肺癌、乳腺癌、宫颈癌、肾母细胞瘤、鼻咽癌、喉癌和神经母细胞瘤等多种肿瘤,具有广谱的抗肿瘤功能。该类化合物来源于天然药物,有望为临床治疗提供新的选择。
Description
高原儿茶酸在制备抗肿瘤药物中的用途
相关申请的交叉引用
本申请要求 2012年 5月 15 日递交的中国专利申请号为 201210151373.X的专利申请 的权益, 在此将其全部内容引入作为参考。 技术领域
本发明属于抗肿瘤药物领域, 具体涉及高原儿茶酸在制备抗肿瘤药物中的用途。 背景技术
肿瘤是机体在各种致癌因素作用下, 细胞在基因水平上失去对其生长的正常调控, 导 致其克隆性异常增生而形成的新生物, 表现为肿块。 肿瘤细胞在外部形态、 代谢和功能方 面不同于正常细胞, 多呈现持续性增殖。 据有效数据统计, 肿瘤是目前威胁全世界人类生 命健康的三大因素之首, 所以抗肿瘤药物的研发成为近年来的热点。
根据抗肿瘤药物的传统分类和研究进展, 可将常用的抗肿瘤药物分为以下几大类: 一、 细胞毒药物, 包括破坏 DNA结构和功能的药物 (如环磷酰胺、 伊立替康)、 影响核酸 生物合成的药物 (如 5-氟尿嘧啶、 阿糖胞苷、 甲氨喋呤) 等; 二、 影响激素平衡的药物, 包括抗雌激素类药物 (如托瑞米芬)、 抗雄激素类药物 (如比卡鲁胺) 和芳香化酶抑制剂 (如来曲唑) 等; 三、 其它及辅助药物, 包括机体免疫功能调节剂 (如白介素、 干扰素)、 生物反应调节剂 (如埃罗替尼、 吉非替尼)、 细胞分化诱导剂 (如维甲酸、 亚砷酸)、 抗叶 酸制剂 (力比泰)、 单克隆抗体 (如阿瓦斯汀) 和辅助镇痛、 止吐、 白细胞升高等药物。 但是, 以上药物或多或少存在着副作用, 像细胞毒药物一般会引发患者的中重度消化系统 反应 (如恶性呕吐、 口腔炎)、 骨髓抑制 (如白细胞减少、 血小板减少) 和器官毒性 (如 神经毒性、 肝肾毒性), 激素平衡干扰药物则会引起患者的轻中度胃肠道反应、 生殖系统 损伤甚至精神抑郁症状, 多数调节剂和诱导剂等也会引发患者不同程度的皮肤反应和肝肾 功能损害。 例如伊立替康 (Irinotecan Hydrochloride) 常用于成人转移性大肠癌的治疗, 效 果比较显著, 但是用药后, 20%的患者出现胃肠道不良反应——严重腹泻, 78.7%的患者均 出现过中性粒细胞减少症, 9%的患者出现短暂严重的急性胆碱能综合征 (Bret Wallace 等. Science, 330, 2010.; 孙祎等. 中国药房, 18(35), 2007.; 吴育红等. 安徽医药, 14(10),
2010. ); 力比泰 (Pemetrexed disodium, Alimta) 是首个抗胸膜间皮瘤药物, 它可以 引起患者的骨髓抑制, 包括中性粒细胞减少、 血小板减少、 贫血或各类血细胞减少, 肝、肾功能不全者忌用(郑航等. 肿瘤防治研究,34(4),2007.;王剑英等. 中外健康文摘,12,
2011. ); 阿瓦斯汀 (Bevacizumab, Avastin) 是血管内皮生长因子 VEGF 的单克隆抗 体, 通过结合 VEGF 并防止其与内皮细胞表面的受体结合, 减少了微血管的生成并 抑制了转移病灶进展, 但是它的副作用很明显, 包括胃肠穿孔、 伤口开裂综合症、 出
血、 高血压危象、 肾病综合征和充血性心力衰竭等 (Eric 0. Gamboa 等. Clinical Colorectal Cancer, 9(1 ), 2010.; A Mailliez等. British Journal of Cancer, 103 , 2010.; Sanjaykumar Ha ani等. Oncology, 79, 2010. )。
相比之下, 抗肿瘤中药对机体的损害则较小, 抗肿瘤中药的作用机理主要涉及细胞毒 作用、 提高机体免疫力、 诱导肿瘤细胞凋亡及分化和抑制肿瘤血管新生等方面。 根据中药 的功效和作用特点, 可将抗肿瘤中药分成以下几大类: 一、 清热解毒类, 如黄芩、 大青叶; 二、 活血化瘀类, 如大黄、 丹参; 三、 扶正培本类, 如人参、 黄芪、 天冬; 四、 化痰散结 类, 如半夏、 瓜蒌、 天南星; 五、 利水化湿类, 如茯苓、 车前子、 翟麦; 六、 外用型药物, 如雄黄、马钱子。上述抗肿瘤中药的部分有效成分,像美登木 iMaytenus bu-xifolia (Rich A ) Griseb. ) 中提取的美登木碱 (mayfoline)、 黄药子 (Air Pootalo Yam Rhizome 中的皂甙 和鞣质等已被人们用于肿瘤药理学研究, 同时这些有效成分标本兼治, 对机体引发的不良 作用总体小于西药的副作用。 因此, 关于抗肿瘤中药有效成分的深入探索具有重要的理论 研究意义和临床指导意义。
然而, 由于大多数中药中的化合物成分复杂, 分离提纯困难, 质量控制受限, 且药效 和作用机理尚不清晰, 海量筛选抗肿瘤的有效成分非常不易, 所以关于中药有效成分的肿 瘤生物学相关研究普遍存在着诸多不足和局限。 例如作为大环类生物碱代表的美登木碱, 其结构中氮原子都以酸胺状态存在, 被初步证明具有较强的抗癌作用, 但其分离提纯步骤 繁琐, 得率仅有五百万分之一, 有机合成技术也尚不成熟, 所以将其大量运用于基础科研 和临床应用并不现实 (田英. 光明中医, 6, 2009.; 何直昇. 国际药学研究杂志, 1, 1981.)。 另外,常用中药黄药子的化学成分包括黄独萜酯、皂甙、鞣质、黄独素和薯蓣皂甙元等, 虽然黄药子已经被大量的体内、 外实验证实其具有抗肿瘤活性, 且具有明显的量效关系, 但具体是哪一种或几种成分发挥作用及其抗肿瘤机制尚不明确(林芳等. 亚太传统医药, 10, 2011.; 喻泽兰等. 中国中药杂志,6, 2004), 所以黄药子中的单一成分很少被用于抗肿瘤研 究。 而且黄药子的长期使用会产生明显的毒副作用, 可引起肝细胞糖原增多, 脂肪变性, 甚至灶性坏死, 也可引起肾小管上皮细胞变性、 坏死。 可能的原因是黄药子直接损伤了肝 肾细胞, 使葡萄糖 -6-磷酸酶和琥珀酸脱氢酶活性受抑制所致。 然而其具体的毒性成分也不 明确, 黄药子的毒性成分与有效成分之间的关系还有待进一步研究。
因此, 药学研究人员仍在致力于开发新的抗肿瘤中药有效成分。
高原儿茶酸 (别名 3, 4-二羟基苯乙酸; 英文名 3,4-dihydroxyphenylacetic acid、 homoprotocatechuic acid DOPAC等; 简称 DO ) 的分子式为 C8H804, 分子量为 168.15。
高原儿茶酸来源于多种中药, 例如报春花科珍珠菜属毛黄连花 iLysimachia vulgaris L. 菊禾斗千里光属千里光 (Senecio cannabifolius var integrilifolius (Koidz. ) Kitam. ) 等。 珍珠菜属植物分布广泛, 然而药理和临床方面的报道很少, 有人统计珍珠菜属植物的皂甙 类或黄酮类成分对于治疗心血管系统疾病、 风湿病及妇科疾病可能有研究和开发的前途 (郭宝林等, 中国珍珠菜属植物药用种类和研究概况, 国外医药 ·植物药分册, 1995,
10:159-162); 千里光是一种常见中草药, 性寒, 味苦, 具有清热解毒、 明目、 止痒等功效, 多用于风热感冒、 目赤肿痛、 泄泻痢疾、 皮肤湿疹疮疖。 本发明的目的在于提供高原儿茶 酸抗肿瘤的新用途。 发明内容
本发明的目的在于提供高原儿茶酸新的医药用途。该化合物来源于天然药物, 能够有 效地抑制多种肿瘤, 可用于临床上多种肿瘤的预防和 /或治疗。
用于实现上述发明目的, 本发明采用了如下的技术方案:
I 本发明所述的用途中, 所述药学上可接受的盐优选为钠盐、钾盐、镁盐、钙盐或铵盐。 本发明所述的用途中, 所述肿瘤优选为实体肿瘤。
本发明所述的用途中, 所述肿瘤更优选自肺癌、 乳腺癌、 宫颈癌、 横纹肌肉瘤、 鼻咽 癌、 胰腺癌、 喉癌、 皮肤癌、 肝癌、 神经母细胞瘤、 肾母细胞瘤和肾上腺皮质瘤中的一种 或多种; 尤其是肺癌、 乳腺癌、 宫颈癌、 肾母细胞瘤、 鼻咽癌、 喉癌和神经母细胞瘤中的 一种或多种。
本发明所述的用途中, 所述药物为临床上可接受的任一剂型。 所述剂型包括经胃肠道 给药制剂和非经胃肠道给药制剂。 优选的, 所述经胃肠道给药制剂选自散剂、 片剂、 颗 粒剂、 滴丸、 胶囊剂、 乳剂或混悬剂。 优选的, 所述非经胃肠道给药制剂选自注射剂、 喷 雾剂、 栓剂、 栓剂、 灌注剂、 贴剂或软膏剂。 优选的, 注射剂选自静脉注射制剂、 腹腔注 射剂或皮下注射剂。
体内外实验表明, 高原儿茶酸能够明显抑制实体瘤的发生和侵袭, 尤其是肺癌、 乳腺 癌、 宫颈癌、 肾母细胞瘤、 鼻咽癌、 喉癌、 神经母细胞瘤等。 具体来说,
( 1 )采用 MTT法检测高原儿茶酸对多种肿瘤细胞增殖的抑制作用。 实验发现, 相较 正常细胞, 高原儿茶酸对肺癌细胞 A549、 肺癌细胞 LLC、 肾母细胞瘤细胞 G401、 鼻咽癌 细胞 CNE2Z、喉癌细胞 Hep2、横纹肌肉瘤 A204、乳腺癌细胞 MDA231、乳腺癌细胞 T47D、 乳腺癌细胞 MCF7、 胰腺癌细胞 PANC1、 神经母细胞瘤细胞 SY5Y和宫颈癌细胞 Hela等 多种肿瘤细胞都有明显抑制作用, IC5Q 在 23〜78 g/ml; 尤其是对肺癌细胞 LLC(IC5Q=23 g/ml) 、 肾 母 细 胞 瘤 细 胞 G401(IC5Q=27 g/ml) 、 乳 腺 癌 细 胞 MDA231CIC5。=3(^g/ml)、 宫颈癌细胞 Hela<;iC5。=34 g/ml)增殖的抑制作用最为显著, 说明 这些瘤株对 DO的作用最为敏感。
(2) 采用细胞迁移检测 (Transwell和 Scratch Analysis) 实验, 高原儿茶酸处理肺癌 细胞 LLC、 肺癌细胞 (A549)、 宫颈癌细胞 Hela、 神经母细胞瘤细胞 SY5Y、 乳腺癌细胞 MCF7、 乳腺癌细胞 MDA23 乳腺癌细胞 T47D、 横纹肌肉瘤细胞 A204、 肾母细胞瘤细 胞 G401、 皮肤鳞癌细胞 A431、 鼻咽癌细胞 CNE2Z和喉癌细胞 Hep2等 24小时 (选用安 全剂量 20 g/ml),检测细胞迁移的个数和细胞间距,发现高原儿茶酸可以显著抑制上述肿 瘤细胞的迁移。 其中, DO对肺癌细胞 LLC、 肺癌细胞 A549、 宫颈癌细胞 Hela、 乳腺癌细 胞 MCF7和乳腺癌细胞 MDA231的作用尤其显著。
(3 ) 采用细胞凋亡流式检测实验, ΙΟ μΜ高原儿茶酸分别处理肺癌细胞 A549、 肾母 细胞瘤细胞 G401和喉癌细胞 Hep2约 24小时, 之后检测细胞凋亡情况。 发现高原儿茶酸 对上述肿瘤细胞的凋亡都具有显著的促进作用, 提示高原儿茶酸可能通过介导肿瘤细胞的 凋亡来发挥抗肿瘤作用。
(4) 采用裸鼠瘤块接种 (Tumor plantation) 实验, 对体外实验发现的优势瘤种进行 体内抗肿瘤实验。 发现高原儿茶酸可以有效抑制移植的肺癌、 乳腺癌和宫颈癌的生长和转 移, 预先给药组中, DO对肺癌、 乳腺癌和宫颈癌的抑瘤率分别为 28%、 45%和 54%; 给 药组中, DO对肺癌、 乳腺癌和宫颈癌的抑瘤率分别为 21%、 39%和 35%。 体内实验结果 证明高原儿茶酸有显著的抗肺癌、 乳腺癌和宫颈癌作用。 附图说明
图 1显示的是高原儿茶酸对肿瘤细胞迁移能力的影响 (Transwell检测)。
图 2显示的是高原儿茶酸对肿瘤细胞迁移能力的影响 (Scratch Analysis检测)。
图 3显示的是高原儿茶酸对肿瘤细胞凋亡的影响, 其中:
3A: 高原儿茶酸对肺癌细胞 A549凋亡的影响,
3B: 高原儿茶酸对肾母细胞瘤细胞 G401凋亡的影响,
3C: 高原儿茶酸对喉癌细胞 Hep2凋亡的影响。
图 4显示的是高原儿茶酸抗肿瘤的体内实验结果, 其中:
4A: 裸鼠肺癌 LLC肿瘤生长曲线,
4B: 裸鼠乳腺癌 MDA231肿瘤生长曲线,
4C: 裸鼠宫颈癌 Hela肿瘤生长曲线。 具体实施方式
以下参照具体的实施例来说明本发明。本领域技术人员能够理解, 这些实施例仅用于 说明本发明, 其不以任何方式限制本发明的范围。
下述实施例中, 如无特殊说明, 所用方法为常规方法, 所用试剂都来源于市售商品。 高原儿茶酸 (纯度 95%以上) 购自北京恒业中远化工有限公司。
实施例 1 高原儿茶酸对肿瘤细胞增殖的影响
实验方案: 采用噻唑蓝(3-(4, 5-二甲基噻唑 -2)-2, 5-二苯基四氮唑溴盐, MTT)实验, 高原儿茶酸(DO) (剂量梯度为 10 mg/ml、 1 mg/ml、 100 g/ml、 10 g/ml、 l g/ml、 100 ng/ml) 分别处理肺癌细胞 A549、 肺癌细胞 LLC、 肾母细胞瘤细胞 G401、 鼻咽癌细胞 CNE2Z和 喉癌细胞 Hep2、 横纹肌肉瘤细胞 A204、 乳腺癌细胞 MDA23 乳腺癌细胞 T47D、 乳腺 癌细胞 MCF7、胰腺癌细胞 PANC1、神经母细胞瘤细胞 SY5Y和宫颈癌细胞 Hela 24小时, MTT染色 4小时, 二甲基亚砜 (DMSO) 溶解, 酶标仪 570 nm下测吸光光度值, 以化合 物梯度为横坐标, 细胞存活率为纵坐标, 绘制标准曲线, 并计算半数抑制浓度 IC5Q, 具体 结果见表 1。
实验结果: 发现高原儿茶酸 (DO)对肺癌细胞 A549、 肾母细胞瘤细胞 G401、 鼻咽癌细 胞 CNE2Z和喉癌细胞 Hep2、横纹肌肉瘤细胞 A204、肺癌细胞 LLC、乳腺癌细胞 MDA231、 乳腺癌细胞 T47D、 乳腺癌细胞 MCF7、 胰腺癌细胞 PANC1、 神经母细胞瘤细胞 SY5Y和 宫颈癌细胞 Hela的增殖都具有显著的抑制作用。其中, DO对肺癌 LLC细胞、 肾母细胞瘤 G401细胞、 乳腺癌 MDA231细胞和宫颈癌 Hela细胞的抑制尤其明显。
高原儿茶酸 (DO)对 12种肿瘤细胞增殖的影响 (IC5Q) 细胞系 瘤株 IC50 ( g/ml)
LLC 肺癌细胞 23
A549 肺癌细胞 42
CNE-2Z 鼻咽癌细胞 35
Hela 宫颈癌细胞 34
G401 肾母细胞瘤细胞 27
MDA231 乳腺癌细胞 30
T47D 乳腺癌细胞 41
MCF7 乳腺癌细胞 59
HEP-2 喉癌细胞 56
A204 横纹肌肉瘤细胞 48
PANC1 胰腺癌细胞 62
SY5Y 神经母细胞瘤细胞 78
实施例 2 高原儿茶酸体外抗肿瘤细胞迁移作用
实验方案:
1 )采用细胞迁移检测 (Transwell) 实验, 20 g/ml高原儿茶酸 (DO) (安全剂量) 处 肺癌细胞 LLC、 肺癌细胞 (A549)、 宫颈癌细胞 Hela、 神经母细胞瘤细胞 SY5Y、 乳腺 细胞 MCF7、 乳腺癌细胞 MDA231、 乳腺癌细胞 T47D、 横纹肌肉瘤细胞 A204、 肾母细
胞瘤细胞 G401、皮肤鳞癌细胞 A431、鼻咽癌细胞 CNE2Z和喉癌细胞 Hep2 24小时后, 无 水冰甲醇固定 20分钟, 然后结晶紫染色 15分钟, 100倍光镜拍照, 检测细胞迁移的个数。
2) 采用细胞迁移检测 (Scratch Analysis) 实验, 20 g/ml高原儿茶酸 (DO) (安全剂 量) 处理肺癌细胞 (LLC)、 肺癌细胞 (A549)、 宫颈癌细胞 (Hela)、 神经母细胞瘤细胞 ( SY5Y)、乳腺癌细胞(MCF7)、中度侵袭转移人乳腺癌细胞 (MDA231)和乳腺癌细胞 (T47D) 6小时和 24小时后, 40倍光镜拍照, 检测细胞间距。
实验结果:
Transwell实验结果显示, 高原儿茶酸(DO)可以显著抑制 LLC、 A549、 Hela、 SY5Y、 MCF7、 MDA23K T47D、 A204、 G401、 A431、 CNE2Z和 Hep2细胞的迁移, 表现为给药 组中细胞数目相对于对照组显著减少。 其中, DO对 Hela、 LLC、 A549、 MCF7、 MDA231 细胞迁移的抑制作用尤其明显。 具体见图 1。
Scratch Analysis实验结果显示, 相对于对照组而言, DO给药组处理后的 Hela、 LLC、 A549、 SY5Y、 MCF7、 MDA231和 T47D细胞划痕宽度相对对照组均明显增大, 说明高原 儿茶酸能够显著抑制上述肿瘤细胞的迁移。 其中, DO 对 Hela、 A549、 MCF7、 MDA231 和 T47D细胞的抑制作用尤其敏感。 具体见图 2。
综上, 高原儿茶酸对肺癌、 宫颈癌细胞和乳腺癌等肿瘤细胞的迁移具有尤为显著的抑 制作用。 实施例 3 高原儿茶酸对肿瘤细胞凋亡的影响
实验方案: 采用细胞凋亡流式检测实验, 10 μΜ高原儿茶酸 (DO)分别处理人肺癌细胞 (A549)、肾母细胞瘤细胞 (G401 )和喉癌细胞 (Hep2) 24小时,之后离心收集细胞( 1500 rpm, 5 min), PBS重悬离心 2次, 之后用 Annexin-V FITC和 PI分别染色 15 min, 流式细 胞分析仪检测凋亡细胞的百分比, 早期凋亡和晚期凋亡的细胞百分比之和及凋亡总比。
实验结果: 高原儿茶酸 (DO) 对 A549、 G401和 Hep2细胞的凋亡具有显著的促进作 用, 提示高原儿茶酸(DO)可能是通过介导肿瘤细胞的凋亡来发挥抗肿瘤作用。 具体结果 见图 3A-3C。 以上体外抗肿瘤作用实验结果说明高原儿茶酸对肺癌、 肾母细胞瘤、 鼻咽癌、 喉癌、 乳腺癌、 宫颈癌、 神经母细胞瘤、 皮肤癌、 胰腺癌、 横纹肌肉瘤细胞的增殖、 迁移都具有 显著的抑制作用。 其中, 高原儿茶酸对肺癌细胞、 宫颈癌细胞和乳腺癌细胞的抑制作用最 为敏感。 同时, DO可能通过促进肿瘤细胞凋亡从而发挥抗肿瘤的作用。 实施例 4 高原儿茶酸体内抗肿瘤实验
实验方案: 裸鼠随机分为三组: 模型对照组 (只接种瘤块而不给药)、 高原儿茶酸预 先给药组 (接种瘤块当天起给药, 200mg/kg, 腹腔注射)、 高原儿茶酸给药组 (成瘤体积
达 70-100 mm3以上时给药, 300mg/kg, 腹腔注射), 每组 5-6只。 采用瘤块接种 (Tumor plantation) 技术, 分别在裸鼠右侧腋窝皮下接种小鼠肺癌细胞 (LLC )、 人乳腺癌细胞 (MDA231)和人宫颈癌细胞(Hela)三种实体瘤块。 定期检测肿瘤体积和裸鼠体重。 待其成 瘤体积达 70-100 mm3时, 高原儿茶酸给药组开始腹腔注射 (I.P. ) 高原儿茶酸, 14天后, 处死所有裸鼠, 剥取瘤块, 测瘤重和体积, 计算各治疗组的抑瘤率。
实验结果: 高原儿茶酸能明显抑制肺癌、 乳腺癌和宫颈癌的生长和转移。 具体结果见 表 2A-2C和附图 4A-附图 4C。
1、 高原儿茶酸对 LLC肺癌的抑制作用 (结果见表 2A和附图 4A)
A. LLC肿瘤生长速度较快, 体积大小达到 100 mm3均为 12天左右;
B. 虽然抑瘤在 28.19%和 20.54%, 高原儿茶酸预先给药组、 给药组中肿瘤体积和重量 均明显减小 (与模型对照组比较, 两组均 P<0.05 ), 表明高原儿茶酸具有一定的抗肺癌作 用。
2、 高原儿茶酸对 MDA231乳腺癌的抑制作用 (结果见表 2B和附图 4B)
A. MDA231细胞为人源的, 相对于 LLC肿瘤而言, 在裸鼠皮下成瘤时间较慢, 体积 大小达到 70 mm3约为 18天左右;
B. 高原儿茶酸预先给药组、给药组中肿瘤体积和重量均明显减小(与模型对照组比较, 两组均 P<0.01 ), 两组的抑瘤率分别为 45.14%和 38.97%。表明高原儿茶酸对乳腺癌可能具 有较好的治疗作用。
3、 高原儿茶酸对 Hela宫颈癌的抑制作用 (结果见表 2C和附图 4C)
A. Hela细胞为人源的, 相对于 LLC肿瘤而言, 在裸鼠皮下成瘤时间较慢, 体积大小 达到 70 mm3约为 20天左右;
B. 高原儿茶酸预先给药组、给药组中肿瘤体积和重量均减小(与模型对照组比较, 两 组均 P<0.01 ), 两组的抑瘤率分别为 54.43%和 34.95%。表明高原儿茶酸对宫颈癌可能具有 较好的治疗作用。
表 2A 高原儿茶酸体内抗肿瘤作用实验结果 (肺癌 LLC)
对照组 高原儿茶酸预先给药组 高原儿茶酸给药组 齐 LI量 (mg/kg) 0 200 300
裸鼠体重 (g) 19.95 ± 0.51 20.04 ± 0.39 20.11 ± 0.35 瘤重 (g) 2.98 ± 0.43 2.14 ± 0.3Γ 2.37 ± 0.28* 抑瘤率(%) 0 28.19 20.54
: 与对照组比, Ρ < 0. 05。
表 2B 高原儿茶酸体内抗肿瘤作用实验结果 (乳腺癌 MDA231) 对照组 高原儿茶酸预先给药组 高原儿茶酸给药组 齐 LI量 (mg/kg) 0 200 300 裸鼠体重 (g) 20.15 ±0.39 20.59 ±0.56 20.33 ±0.49 瘤重 (g) 1.75 ±0.24 0.96 ±0.17" 1.01 ±0.1(Γ 抑瘤率(%) 0 45.14 38.97
: 与对照组比, Ρ<0.01。 表 2C 高原儿茶酸体内抗肿瘤作用实验结果 (宫颈癌 Hela)
对照组 高原儿茶酸预先给药组 高原儿茶酸给药组 齐 LI量 (mg/kg) 0 200 300 裸鼠体重 (g) 19.97 ±0.51 20.26 ± 0.43 20.07 ±0.49 瘤重 (g) 1.69±0.19 0.77 ±0.12** 1.10 ±0.16** 抑瘤率(%) 0 54.43 34.95
: 与对照组比, P<0.01。 以上体内研究结果表明, 高原儿茶酸对肺癌、 乳腺癌和宫颈癌具有治疗作用。
Claims
I
2、 根据权利要求 1所述的用途, 其特征在于, 所述药学上可接受的盐为钠盐、 钾盐、 镁盐、 钙盐或铵盐。
3、 根据权利要求 1或 2所述的用途, 其特征在于, 所述肿瘤为实体肿瘤。
4、 根据权利要求 1至 3中任一项所述的用途, 其特征在于, 所述肿瘤选自肺癌、 乳 腺癌、 宫颈癌、 横纹肌肉瘤、 鼻咽癌、 胰腺癌、 喉癌、 皮肤癌、 肝癌、 神经母细胞瘤、 肾 母细胞瘤和肾上腺皮质瘤中的一种或多种。
5、 根据权利要求 4所述的用途, 其特征在于, 所述肿瘤选自肺癌、 乳腺癌、 宫颈癌、 肾母细胞瘤、 鼻咽癌、 喉癌和神经母细胞瘤中的一种或多种。
6、 根据权利要求 1至 5中任一项所述的用途, 其特征在于, 所述药物为临床上可接 受的任一剂型。
7、 根据权利要求 6所述的用途, 其特征在于, 所述剂型包括经胃肠道给药制剂和非 经胃肠道给药制剂;
优选的, 所述经胃肠道给药制剂任选自散剂、 片剂、 颗粒剂、 胶囊剂、 滴丸、 乳剂或 混悬剂;
优选的, 所述非经胃肠道给药制剂任选自注射剂、 喷雾剂、 栓剂、 灌注剂、 贴剂或软 膏剂。
8、 根据权利要求 1至 7任一项所述的用途, 其特征在于: 高原儿茶酸作为所述预防 和 /或治疗肿瘤药物的唯一活性成分, 或高原儿茶酸与其它物质一起制备所述预防和 /或治 疗肿瘤的药物。
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WO1995010271A2 (en) * | 1993-10-12 | 1995-04-20 | The Government Of The United States Of America, Represented By The Secretary, Department Of Health And Human Services | Phenylacetate and derivatives alone or in combination with other compounds against neoplastic conditions and other disorders |
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WO1995010271A2 (en) * | 1993-10-12 | 1995-04-20 | The Government Of The United States Of America, Represented By The Secretary, Department Of Health And Human Services | Phenylacetate and derivatives alone or in combination with other compounds against neoplastic conditions and other disorders |
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Title |
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GAO, K. ET AL.: "Of the Major Phenolic Acids Formed during Human Microbial Fermentation of Tea, Citrus, and Soy Flavonoid Supplements, Only 3,4-Dihydroxyphenylacetic Acid Has Antiproliferative Activity", THE JOURNAL OF NUTRITION, vol. 136, no. 1, 2006, pages 52 - 57 * |
KAMPA, M. ET AL.: "Antiproliferative and apoptotic effects of selective phenolic acids on T47D human breast cancer cells: potential mechanisms of action", BREAST CANCER RES., vol. 6, no. 2, 15 December 2003 (2003-12-15), pages R63 - R74 * |
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