WO2010111845A1 - 一种高比活绝经期促性腺素及其制备方法和用途 - Google Patents
一种高比活绝经期促性腺素及其制备方法和用途 Download PDFInfo
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- WO2010111845A1 WO2010111845A1 PCT/CN2009/071986 CN2009071986W WO2010111845A1 WO 2010111845 A1 WO2010111845 A1 WO 2010111845A1 CN 2009071986 W CN2009071986 W CN 2009071986W WO 2010111845 A1 WO2010111845 A1 WO 2010111845A1
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- Prior art keywords
- specific activity
- high specific
- menopausal gonadotropin
- menopausal
- hmg
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
- A61K38/16—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- A61K38/17—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- A61K38/22—Hormones
- A61K38/24—Follicle-stimulating hormone [FSH]; Chorionic gonadotropins, e.g. HCG; Luteinising hormone [LH]; Thyroid-stimulating hormone [TSH]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P15/00—Drugs for genital or sexual disorders; Contraceptives
- A61P15/08—Drugs for genital or sexual disorders; Contraceptives for gonadal disorders or for enhancing fertility, e.g. inducers of ovulation or of spermatogenesis
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P5/00—Drugs for disorders of the endocrine system
- A61P5/06—Drugs for disorders of the endocrine system of the anterior pituitary hormones, e.g. TSH, ACTH, FSH, LH, PRL, GH
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- C07K14/575—Hormones
- C07K14/59—Follicle-stimulating hormone [FSH]; Chorionic gonadotropins, e.g.hCG [human chorionic gonadotropin]; Luteinising hormone [LH]; Thyroid-stimulating hormone [TSH]
Definitions
- the present invention relates to the field of protein purification and biomedicine.
- the present invention relates to high specific activity menopausal gonadotropins and corresponding purification methods. Background technique
- HMG Human Menopausal Gonadotrop ins
- FSH Fol lic le- st imulat ing hormone
- LH lutein ingestive hormone
- FSH Fol lic le- st imulat ing hormone
- LH lutein ingestive hormone
- the a subunit of FSH is identical to the ⁇ subunit of LH and chori oni c gonadotropi n (CG), with 92 amino acids, a molecular weight of approximately 14500D, and asparagine at positions 52 and 78. It is an amino acid that undergoes glycosylation.
- the ⁇ subunit of FSH is composed of 11 1 amino acids and has a molecular weight of about 18000D.
- the asparagine at positions 7 and 24 is a glycosylated amino acid.
- the ⁇ subunit of LH is composed of 121 amino acids with a molecular weight of about 14800D, and the ⁇ subunit of CG has 145 amino acids with a molecular weight of 22000 - 39,000D.
- HMG is mainly used to treat infertility. It can be extracted from the urine of pituitary or menopausal women, or it can be prepared by DNA recombination techniques.
- the first product containing FSH is urinary gonadotropin (HMG), such as Serono's Pergonal, which is a mixture of FSH and LH in a ratio of about 1.
- HMG urinary gonadotropin
- Serono's Pergonal which is a mixture of FSH and LH in a ratio of about 1.
- PHMG urinary gonadotropin
- PHMG urinary gonadotropin
- the present invention aims to provide a process for preparing a high specific activity HMG having high purity and low impurities.
- Another object of the present invention is to provide a high specific activity HMG purified by the above method.
- Still another object of the present invention is to provide a pharmaceutical composition of high specific activity HMG purified by the above method.
- a further object of the present invention is to provide the use of high specific activity HMG purified by the above method.
- a purified human Menopausal Gonadotropins pHMG
- pHMG menopausal Gonadotropins
- the specific activity of the high specific activity menopausal gonadotropin is not less than 6000 FSH international units/mg protein; more preferably, the specific activity is not less than 8000 FSH international units/mg protein.
- the specific activity of the high specific activity menopausal gonadotropin is 6000 - 20000 FSH international unit / mg protein; more preferably, the specific activity is 8000 - 15000 FSH international unit / mg protein.
- the menopausal gonadotropin is derived from recombinant menopausal gonadotropin or a variant thereof, or a human urine-derived menopausal gonadotropin or a variant thereof.
- the ratio of the biopotency of follic sputum hormone (FSH) to luteinizing hormone (LH) is 1:0.3.
- the ratio of the biopotency of follic sputum hormone (FSH) to luteinizing hormone (LH) is 1:0.5-1.4.
- FSH follic sputum hormone
- LH luteinizing hormone
- pHMG menopausal gonadotropin
- the method comprising the steps of: purifying a low specific activity HMG by dye affinity chromatography , obtaining a high specific activity menopausal gonadotropin; the low specific activity HMG ratio is below 2000 FSH international unit / mg protein.
- the method includes the steps of:
- the concentration of low specific activity HMG in the solution containing low specific activity HMG is 0.1 - 10w/v% o
- the solution containing the low specific activity HMG has a pH of 4-8.
- the buffer is selected from the group consisting of sodium acetate solution, ammonium acetate solution, glycine-NaOH solution, Tris-HCl solution, or phosphate solution.
- step (3) includes the following steps:
- the precipitate is dehydrated to obtain a dry high specific live menopausal gonadotropin.
- the dye ligand of the chromatography column of the dye affinity chromatography is selected from the group consisting of Cibacron Blue, Orange ⁇ Red, Green.
- the solid phase carrier of the chromatography column of the dye affinity chromatography is selected from the group consisting of bentonite, glass microspheres, quartz microspheres, calcium hydroxyphosphate, alumina, polyacrylamide gel, and starch condensation. Gum, dextran gel, cellulose, or agarose.
- the chromatographic column of the dye affinity chromatography is selected from the group consisting of Blue Sepharose FF or Blue Sepharose 6B.
- a pharmaceutical composition comprising a therapeutically effective amount of a high specific activity menopausal gonadotropin as described above and a pharmaceutically acceptable carrier.
- a use of a high specific activity menopausal gonadotropin as described above for the preparation of a medicament for the treatment of infertility syndrome Accordingly, the present invention provides a high specific activity HMG and a preparation method thereof, which are convenient for use in subcutaneous injection, are convenient for patient use, and relieve pain.
- high specific activity HMG can be obtained by dye affinity chromatography, and its specific activity can reach above 5000 FSH international units/mg protein. It is currently known as the highest specific activity HMG. And the biological potency ratio of FSH and LH can be within the required range, such as 1: 0 - 1 - 1: 3.
- the present invention purifies low specific activity HMG by dye affinity chromatography to obtain a high specific activity menopausal gonadotropin.
- low specific activity HMG refers to an HMG that is active below 2000 FSH International Units (IU) per mg protein, preferably at a ratio of 40 to 300 FSHIU per mg of protein.
- Low specific activity HMG can be obtained by methods well known in the art, such as, but not limited to, from kaolin in menopausal women by kaolin adsorption, elution, acetone precipitation, ethanol solution extraction, ion exchange chromatography (including cations, anions) Chromatography), even hydrophobic chromatography. It can also be obtained through commercial channels.
- the ratio of bioavailability of FSH and LH in low specific activity HMG is in the range of 1:0.1 to 3, and more in the range of 1:0.5 to 1.4.
- menopausal gonadotropin As used herein, “menopausal gonadotropin”, “urinary gonadotropin” and “HMG” are used interchangeably and refer to a class of glycoprotein hormones or variants thereof produced by the pituitary, containing both FSH and LH. Active ingredient. It may be a recombinant menopausal gonadotropin or a variant thereof, or a human urine-derived menopausal gonadotropin or a variant thereof.
- follicle stimulating hormone and “FSH” are used interchangeably and refer to a class of hormones or variants thereof that promote the production of sperm or follicles and promote ovarian development, which can be naturally preceded by the pituitary gland.
- Leaf secretion can be extracted from the urine of menopausal women or can be obtained by recombinant techniques.
- Luteinizing hormone and “LH” are used interchangeably to refer to a type of hormone that is secreted by the basal cells of the anterior pituitary gland and acts on mature oocytes to cause ovulation and produce corpus luteum. Or its variants.
- the biopotency of follic sputum hormone (FSH) and luteinizing hormone (LH) refers to how many international units of FSH are contained per milligram of product obtained according to the method of Chinese Pharmacopoeia 2005 Appendix XII M, Appendix XII N. And LH.
- the specific activity refers to the potency contained in the protein per unit weight.
- the specific activity of HMG or pHMG means how many international units FSH or LH are contained per milligram of protein.
- the method for measuring the protein content is measured according to the L 0 wry method or a method derived therefrom.
- the preparation method of the high specific activity menopausal gonadotropin provided by the present invention is to purify the low specific activity HMG by dye affinity chromatography.
- the method of preparing a high specific activity menopausal gonadotropin comprises the steps of:
- Chromatographic columns for dye affinity chromatography can be well known in the art, such as, but not limited to, Green Agarose, Orange agarose; preferably Blue Sepharose; more preferably Blue Sepharose 6B.
- concentration of ions in the washing liquid is 0.01-5 M, and the washing liquid is selected from the group consisting of sodium acetate solution, glycine-NaOH solution, or Tris-HCl solution.
- the solution containing the low specific activity HMG is obtained by dissolving the low specific activity HMG in a buffer; preferably, the solution containing the low specific activity HMG has a pH of 4-8.
- the method of preparing a high specific activity menopausal gonadotropin comprises the steps of:
- the salt is a hydrochloride or a sulfate wherein the metal ion is selected from Na, K, or ammonium; generally the same salt is used in step (iv) and step (V);
- the low concentration is 0-0.5M, preferably 0.1-0.5M, more preferably 0.3-0.5M; the high concentration is 0.5-5M, preferably 2-5M, more preferably It is 3-5M.
- the high specific activity menopausal gonadotropin is obtained by the following steps:
- High specific activity menopausal gonadotropins can be prepared by the method of the present invention, which is more than 5000 FSH international units per mg of protein.
- the biopotency ratio of follic sputum hormone (FSH) to luteinizing hormone (LH) is 1: 0.1-3; preferably, follic sputum hormone (FSH)
- the ratio of biopotency to luteinizing hormone (LH) is 1: 0.5-1.4.
- the term "pharmaceutically acceptable carrier” refers to a carrier for the administration of a therapeutic agent, including various excipients and diluents.
- the term refers to pharmaceutical carriers which are not themselves essential active ingredients and which are not excessively toxic after administration. Suitable carriers are well known to those of ordinary skill in the art. A thorough discussion of pharmaceutically acceptable excipients can be found in Remington's Pharmaceutical Sciences (Mack Pub. Co., N. J. 1991).
- Pharmaceutically acceptable carriers in the compositions can include liquids such as water, saline, glycerol and ethanol. Further, auxiliary substances such as a disintegrating agent, a wetting agent, an emulsifier, a pH buffering substance and the like may be present in these carriers.
- compositions can be prepared in a variety of dosage forms depending on the route of administration. These dosage forms are administered in one of the following modes: oral, topical, parenteral, such as subcutaneous, intravenous, and intramuscular injection or input, or by means of an explant reservoir. Among them, a preferred mode of administration by subcutaneous injection is preferred. Use
- the high specific activity menopausal gonadotropin prepared by the method of the present invention can be used for the preparation of a medicament for treating infertility syndrome, and the medicament can be administered by a conventional route, including (but not limited to): intramuscular injection , subcutaneous injection, etc. It is preferably administered by subcutaneous injection.
- the form of the pharmaceutical preparation should be matched to the mode of administration.
- the amount of the drug to be administered is usually from about 0.01 to 5 g/kg body weight per day, preferably from about 0.05 to 0.5 ug/kg body weight, more preferably from 0.2 to 0.4 ug/kg body weight, based on the active substance.
- the medicament of the present invention can be used as it is, or it can be used in combination with other therapeutic agents or adjuvants.
- the above-mentioned features mentioned in the present invention, or the features mentioned in the embodiments, may be arbitrarily combined. All of the features disclosed in the present specification can be used in combination with any of the compositions, and the various features disclosed in the specification can be substituted for any alternative feature that provides the same, equal or similar purpose. Thus, the features disclosed are only general examples of equal or similar features, unless specifically stated.
- the main advantages of the invention are:
- a purification method of high specific activity HMG is provided, which is simple and effective, and is suitable for industrialization.
- the invention is further illustrated below in conjunction with specific embodiments. It should be understood that these embodiments are only used for The invention is illustrated and not intended to limit the scope of the invention.
- the experimental methods in the following examples which do not specify the specific conditions are usually carried out according to conventional conditions or according to the conditions recommended by the manufacturer. All percentages, ratios, ratios, or parts are by weight unless otherwise indicated.
- the unit of weight percent by volume in the present invention is well known to those skilled in the art and, for example, refers to the weight of the solute in a 100 ml solution.
- the XII N method is carried out.
- the protein content in the specific activity assay in the present invention is determined by the Lo wry method.
- biopotency The bioavailability of FSH and LH was determined according to the Chinese Pharmacopoeia 2005 Appendix XI I M and Appendix XI I N methods.
- biopotency The bioavailability of FSH and LH was determined according to the Chinese Pharmacopoeia 2005 Appendix XI I M and Appendix XI I N methods.
- Method for determination of protein content The measurement was carried out according to the Lowry method.
- specific activity FSH biological titer (IU/mL) ⁇ protein content per ml of liquid (mg/mL)
- Examples of 100 bottles of pHMG lyophilized injections with 75 IU FSH and 75 IU LH per bottle are as follows:
- the lg lactose was dissolved in 30 mL of pyrogen-free water for injection, and if necessary, adjusted to pH 6. 5 ⁇ 0.2 with HC1 or NaOH, and sterile filtered using a 0.22 ⁇ filter. Then, it was added to the above FSH solution, and the volume was adjusted to 75 mL with pyrogen-free water for injection, and the mixture was mixed.
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Description
一种高比活绝经期促性腺素及其制备方法和用途 技术领域
本发明涉及蛋白质纯化和生物医药领域。 具体而言, 本发明涉及高比活 绝经期促性腺素以及相应的纯化方法。 背景技术
绝经期促性腺素 (Human Menopausal Gonadotrop ins,简称 HMG ) 含有卵 泡剌激素(Fol l i c le- s t imulat ing hormone , 简称 FSH)和黄体生成激素 (leute ini z ing hormone , 简称 LH)两种活性成分, 它们是由垂体产生的糖蛋 白激素, 都是由 α链和 β链两个亚基组成。 FSH的 a亚基与 LH、 绒毛膜促性 腺素(chori oni c gonadotropi n , 简称 CG)的 α亚基完全相同, 具有 92个氨 基酸, 分子量约为 14500D , 第 52和 78位置上的天冬酰胺是发生 糖基化 的氨基酸。 FSH的 β亚基由 1 1 1个氨基酸组成, 分子量约为 18000D , 其中第 7和 24位置上的天冬酰胺是发生 -糖基化的氨基酸。 而 LH的 β亚基由 121 个氨基酸组成, 分子量约为 14800D ; CG 的 β亚基则有 145 个氨基酸, 分子 量 22000 - 39000D。
临床上 HMG主要用于治疗不育症, 它可以从垂体或绝经期妇女的尿液中 提取出来, 也可通过 DNA重组技术而制备。
含有 FSH的第一代产品是尿促性素(HMG), 如 Serono公司的 Pergonal , 它是 FSH与 LH 比例约为 1 的混合物。 但是它的比活和纯度都很低, 比活一 般在 40— 300IU/mg蛋白, 纯度只有 2— 3%的有效成分, 其余约 97%都是杂蛋 白, 由于杂蛋白含量大, 对人体有潜在的副作用, 给药方式也只能局限于肌 肉注射。 高纯度的尿促性素(PHMG)是本领域所特别需要的, 它应当纯度高、 杂质少, 不含有大量的杂蛋白, 因此不会造成人体的过敏反应, 并且由于这 些优点它可以使用皮下注射, 提高患者的顺应性。
但是, pHMG的纯化很有难度, 由于它同时含有 FSH和 LH两种成分, 而 且需要两者按一定的比例构成, 而 FSH和 LH 的结构性质又不相同, 因此在 后期的纯化过程中很容易使两者分离从而导致达不到希望的比例, 这在 pHMG 的纯化中尤其突出, 目前还没有关于直接获得高比活 HMG的方法的报道。
因此本领域迫切需要开发出一种制备纯度高、 杂质少的高比活 HMG的方 法, 便于使用于皮下注射, 方便患者的使用、 减轻痛苦。
发明内容
本发明旨在提供一种纯度高、 杂质少的高比活 HMG的制备方法。
本发明的另一个目的是提供由上述方法纯化得到的高比活 HMG。
本发明的又一个目的是提供由上述方法纯化得到的高比活 HMG的药物组 合物。
本发明的再一个目的是提供由上述方法纯化得到的高比活 HMG的用途。 在本发明的第一方面, 提供了一种高比活绝经期促性腺素 (purified Human Menopausal Gonadotropins, pHMG ) , 所述高比活绝经期促个生]]彔素比 活不低于 5000 FSH国际单位 /mg蛋白。
在另一优选例中, 所述的高比活绝经期促性腺素的比活为不低于 6000 FSH 国际单位 /mg蛋白; 更佳地, 其比活为不低于 8000 FSH国际单位 /mg蛋白。
在另一优选例中, 所述的高比活绝经期促性腺素的比活为 6000— 20000 FSH 国际单位 /mg蛋白; 更佳地, 其比活为 8000— 15000 FSH国际单位 /mg蛋白。 在另一优选例中, 所述的绝经期促性腺素来自重组的绝经期促性腺素或其 变体、 或人尿来源的绝经期促性腺素或其变体。
在另一优选例中, 所述的高比活绝经期促性腺素中, 卵泡剌激素 (FSH ) 与 黄体生成素 (LH ) 的生物效价比例为 1 : 0. 1— 3。
在另一优选例中, 所述的高比活绝经期促性腺素中, 卵泡剌激素 (FSH ) 与 黄体生成素 (LH ) 的生物效价比例为 1 : 0. 5— 1. 4。 在本发明的第二方面, 提供了一种如上所述的高比活绝经期促性腺素 ( pHMG) 的制备方法, 所述的方法包括步骤: 将低比活 HMG 通过染料亲和层析 纯化, 得到高比活绝经期促性腺素; 所述的低比活 HMG比活在 2000 FSH国际单 位 /mg蛋白以下。
在另一优选例中, 所述的方法包括步骤:
( 1 ) 将含有低比活 HMG的溶液上样至染料亲和层析的层析柱上;
( 2 ) 用 pH6— 11的缓冲液进行洗涤; 和
( 3 ) 用 pH6— 11的缓冲液进行洗脱, 得到高比活绝经期促性腺素。
在另一优选例中, 所述含有低比活 HMG 的溶液中低比活 HMG的浓度为 0. 1
- 10w/v% o
在另一优选例中, 所述含有低比活 HMG的溶液 pH为 4一 8。
在另一优选例中,所述的缓冲液选自醋酸钠溶液、醋酸铵溶液、甘氨酸 -NaOH 溶液、 Tri s-HCl溶液、 或磷酸盐溶液。
在另一优选例中, 所述步骤 (3 ) 中包括下述步骤:
( 3' ) 用 pH6— 11的缓冲液进行洗脱, 收集洗脱液;
( 3" ) 浓缩洗脱液后, 加入无水乙醇, 离心得到沉淀; 和
( 3'" ) 将沉淀脱水, 得到干燥的高比活绝经期促性腺素。
在另一优选例中, 所述染料亲和层析的层析柱的染料配基选自 Cibacron Blue、 Orange ^ Red、 Green。
在另一优选例中, 所述染料亲和层析的层析柱的固相载体选自皂土、 玻璃 微球、 石英微球、 羟磷酸钙、 氧化铝、 聚丙烯酰胺凝胶、 淀粉凝胶、 葡聚糖凝 胶、 纤维素、 或琼脂糖。
在另一优选例中, 所述染料亲和层析的层析柱选自 Blue Sepharose FF或 Blue Sepharose 6B。 在本发明的第三方面, 提供了一种药物组合物, 所述的组合物中含有治疗 有效量的如上所述的高比活绝经期促性腺素和药学上可接受的载体。 在本发明的第四方面, 提供了一种如上所述的高比活绝经期促性腺素的 用途, 用于制备治疗不育综合症的药物。 据此, 本发明提供了一种高比活 HMG及其制备方法, 便于使用于皮下注 射, 方便患者的使用、 减轻痛苦。 具体实施方式
发明人经过广泛而深入的研究, 惊奇地发现通过染料亲和层析色谱可以 获得高比活的 HMG, 其比活可以达到 5000 FSH国际单位 /mg蛋白以上, 是目 前已知比活最高的 HMG,并且 FSH和 LH的生物效价比例可以在要求的范围内, 如 1 : 0. 1 - 1: 3。 具体地, 本发明将低比活 HMG通过染料亲和层析纯化, 得 到高比活绝经期促性腺素。
如本文所用, "低比活 HMG " 是指比活在 2000 FSH国际单位 (IU ) /mg蛋 白以下的 HMG, 优选比活在 40— 300 FSHIU/mg蛋白。 可以通过本领域熟知的 方法获得低比活 HMG, 例如但不限于, 从绝经期妇女尿液中通过高岭土吸附、 洗脱, 丙酮沉淀, 乙醇溶液抽提, 离子交换层析色谱 (包括阳离子、 阴离子 色谱) , 甚至疏水色谱得到。 也可以通过商业渠道获得。 低比活 HMG中 FSH和 LH的生物效价比例在 1 : 0. 1— 3范围, 更多的在 1 : 0. 5- 1 . 4范围。
如本文所用, "绝经期促性腺素" 、 "尿促性素" 和 " HMG " 可以互换 使用, 都是指一类由垂体产生的糖蛋白激素或其变体, 含有 FSH和 LH两种活 性成分。 可以是重组的绝经期促性腺素或其变体、 或是人尿来源的绝经期促 性腺素或其变体。
如本文所用, "卵泡剌激素" 和 " FSH " 可以互换使用, 都是指一类用 于促进精子或卵泡产生、 促进卵巢发育的激素或其变体, 其可在天然情况下 由垂体前叶分泌, 可从绝经期妇女的尿液中提取或可通过重组技术获得的。
如本文所用, "黄体生成激素"和 " LH "可以互换使用, 都是指是由脑 垂体前叶嗜碱性细胞分泌的, 作用于成熟的卵胞, 能引起排卵并生成黄体的 一类激素或其变体。
在本发明中, 卵泡剌激素 (FSH ) 与黄体生成素 (LH ) 的生物效价是指 按照中国药典 2005版附录 XII M、 附录 XII N的方法测定所得的每毫克产品中 含多少国际单位 FSH和 LH。
比活是指单位重量的蛋白中所含的效价, 在本发明中, HMG或 pHMG的比 活是指每毫克蛋白中含多少国际单位 FSH或 LH。 其中, 蛋白含量的测定方法 是按照 L 0 wry法或其衍生的方法进行测定。 制备方法
本发明提供的高比活绝经期促性腺素的制备方法, 是将低比活 HMG通过 染料亲和层析纯化。
在本发明的一个实施例中, 所述的制备高比活绝经期促性腺素的方法包 括步骤:
( 1 ) 将含有低比活 HMG的溶液上样至染料亲和层析的层析柱上; 和
( 2 ) 用 pH6— 1 1的洗涤液进行洗脱, 得到高比活绝经期促性腺素。
染料亲和层析的层析柱可以是本领域所熟知的, 例如但不限于, Green
琼脂糖、 Orange琼脂糖; 较佳地为 Blue琼脂糖; 更佳地为 Blue Sepharose 6B。 较佳地, 洗涤液中的离子浓度在 0.01— 5M, 洗涤液选自醋酸钠溶液、 甘 氨酸 -NaOH溶液、 或 Tris-HCl溶液。
所述的含有低比活 HMG的溶液是将低比活 HMG溶解于缓冲液而得; 较佳 地, 所述含有低比活 HMG的溶液 pH为 4-8。
在本发明的一个优选例中, 所述的制备高比活绝经期促性腺素的方法包 括步骤:
( i )将含有低比活 HMG的溶液上样至染料亲和层析的蓝色琼脂糖(Blue Sepharose) 层析柱上; 所述的含有低比活 HMG的溶液是将低比活 HMG溶解于 pH4-8缓冲液;
( ii ) 用步骤 ( i ) 中的缓冲液洗涤;
(iii) 用 pH6— 11的甘氨酸 -NaOH缓冲液洗涤;
( iv) 用含低浓度盐的 pH6— 11的 Tris-HCl缓冲液洗涤
(V) 用含高浓度盐的 pH6— 11的 Tris-HC缓冲液洗脱, 收集洗脱液; ( V ) 浓缩洗脱液, 加入无水乙醇, 离心得到沉淀; 和
( vi ) 将沉淀脱水, 得到干燥的高比活绝经期促性腺素。
所述的盐是盐酸盐或硫酸盐, 其中的金属离子选自 Na、 K、 或铵; 一般 在步骤 (iv) 和步骤 (V) 中使用同一种盐;
所述的低浓度为 0-0.5M, 较佳地为 0.1— 0.5M, 更佳地为 0.3— 0.5M; 所 述的高浓度为 0.5— 5M, 较佳地为 2— 5M, 更佳地为 3— 5M。 在本发明的一个优选实施例中, 所述高比活绝经期促性腺素通过以下步 骤获得:
将含有低比活 HMG的溶液上样至染料亲和层析的层析柱上; 和
用 pH6— 11的缓冲液进行洗涤和洗脱, 得到高比活绝经期促性腺素。 高比活绝经期促性腺素 (pHMG)
通过本发明的方法可以制备得到高比活绝经期促性腺素, 其比活 5000 FSH国际单位 /mg蛋白。
本发明制备得到的高比活的绝经期促性腺素中, 卵泡剌激素 (FSH) 与 黄体生成素 (LH) 的生物效价比例为 1: 0.1-3; 较佳地, 卵泡剌激素 (FSH) 与黄体生成素 (LH) 的生物效价比例为 1: 0.5— 1.4。
药物组合物
如本文所用, 术语 "药学上可接受的载体" 指用于治疗剂给药的载体, 包括各种赋形剂和稀释剂。 该术语指这样一些药剂载体: 它们本身并不是必 要的活性成分, 且施用后没有过分的毒性。 合适的载体是本领域普通技术人 员所熟知的。 在 Remington's Pharmaceutical Sciences(Mack Pub. Co. , N.J. 1991)中可找到关于药学上可接受的赋形剂的充分讨论。在组合物中药学上可 接受的载体可包括液体, 如水、 盐水、 甘油和乙醇。 另外, 这些载体中还可 能存在辅助性的物质, 如崩解剂、 润湿剂、 乳化剂、 pH缓冲物质等。
所述药物组合物可以根据不同给药途径而制备成各种剂型。 这些剂型以 下面方式之一施用: 口服、 局部用药、 非肠道用药, 如皮下、 静脉、 和肌肉 注射或输入, 或借助一种外植储器用药。 其中优选优选皮下注射给药方式。 用途
通过本发明的方法制备得到的高比活绝经期促性腺素可以用于制备治疗 不育综合症的药物, 所述的药物可以通过常规途径施用, 其中包括 (但并不限 于;): 肌注、 皮下注射等。 优选皮下注射施用。 药物制剂形式应与施用方式相 匹配。 药物的施用量, 按活性物质计算, 通常为每天约 0.01— 5 g/kg体重, 较佳地约 0.05-0.5ug/kg体重, 更优选为 0.2-0.4ug/kg体重。
本发明的药物可直接使用, 也可与其它治疗剂或辅剂联合使用。 本发明提到的上述特征, 或实施例提到的特征可以任意组合。 本案说明 书所揭示的所有特征可与任何组合物形式并用, 说明书中所揭示的各个特 征, 可以任何可提供相同、 均等或相似目的的替代性特征取代。 因此除有特 别说明, 所揭示的特征仅为均等或相似特征的一般性例子。 本发明的主要优点在于:
1、 提供了一种高纯度、 杂质少的高比活 HMG, 可应用于皮下注射;
2、 提供了一种高比活 HMG的纯化方法, 方法简单有效, 适合产业化。 下面结合具体实施例, 进一步阐述本发明。 应理解, 这些实施例仅用于
说明本发明而不用于限制本发明的范围。 下列实施例中未注明具体条件的实 验方法, 通常按照常规条件或按照制造厂商所建议的条件。 除非另外说明, 否则所有的百分数、 比率、 比例、 或份数按重量计。
本发明中的重量体积百分比中的单位是本领域技术人员所熟知的, 例如 是指在 100毫升的溶液中溶质的重量。
除非另行定义, 文中所使用的所有专业与科学用语与本领域熟练人员所 熟悉的意义相同。 此外, 任何与所记载内容相似或均等的方法及材料皆可应 用于本发明方法中。 文中所述的较佳实施方法与材料仅作示范之用。 本发明中 FSH、 LH生物效价的测定方法按中国药典 2005版附录 XII M、
XII N的方法进行。
本发明中比活测定中的蛋白质含量测定按 Lo wry法测定。 实施例 1
制备高比活绝经期促性腺素 I 在本实施例中, 将低比活 HMG (购自上海天伟生物制药有限公司;)用作 pHMG的起始原料, 其中 FSH的生物效价为 273 IU/mg, LH的生物效价为 3 19 IU/mg。
将 500mL Blue Sepharose FF (购自 GE Amersham) , 装入层析柱, 用平衡 液 (0.02 M 醋酸钠, pH7.0)平衡。
将 10g低比活 HMG用 1L平衡液溶解, 用 HC1或 NaOH溶液调节 pH约 7.0, 然后上样至上述 Blue Sepharose FF层析柱上, 上样结束后用平衡液洗涤 5倍柱体积, 然后用 0.05M Glycin-NaOH pHIO洗涤 8倍柱体积, 再用 0.05M Tris-HC1,0.4M NaCl, pH9洗涤 8倍柱体积,最后用 0.05M Tris-HC1,4M NaCl, pH9洗脱,分部收集洗脱液, 合并有效成份, 用 10000MW膜超滤浓缩后,边搅 拌边加入 5倍体积预冷的无水乙醇, 离心收集沉淀, 用无水乙醇脱水, 真空 干燥得 236mg干燥品, 即高比活绝经期促性腺素 I 。
生物效价的测定方法: 按照中国药典 2005版附录 XI I M、 附录 XI I N的 方法测定 FSH、 LH生物效价。
蛋白质含量测定方法: 按 Lowry法进行测定。
FSH比活的计算方法: 比活 = FSH生物效价 (IU/mg ) ÷每毫克干燥品 中的蛋白含量 (mg/mg )
其结果见表 1 :
结果表明, 采用本发明的方法进行纯化, 可以使 HMG的比活大大提高。 实施例 2
制备高比活绝经期促性腺素 II 将 500mL Blue Sepharose 6B (购自 GE Amersham) , 装入层析柱, 用平衡 液 (0.02 M 醋酸钠, pH7.0)平衡。
将 6g同实施例 1 中相同来源的低比活 HMG用 600mL平衡液溶解, 用 HC1或 NaOH溶液调节 pH约 7.0,然后上样至上述 Blue Sepharose 6B层析柱 上, 上样结束后用平衡液洗涤 5倍柱体积, 然后用 0.05M Glycin-NaOH pH10 洗涤 5倍柱体积, 再用 0.05M Tris-HC1,0.2M NaCl, pH9洗涤 5倍柱体积,再 用 0.05M Tris-HC1,0.5M NaCl, pH9 洗涤 7 倍柱体积, 最后用 0.05M Tris-HC1,4M NaCl , pH9洗脱,分段收集洗脱液, 合并有效成份, 用 10000MW 膜超滤浓缩至 lOOmL,即得高比活绝经期促性腺素 II。 对此液体取样测定 FSH、 LH生物效价及蛋白含量, 计算比活。
生物效价的测定方法: 按照中国药典 2005版附录 XI I M、 附录 XI I N的 方法测定 FSH、 LH生物效价。
蛋白质含量测定方法: 按 Lowry法进行测定。
FSH比活的计算方法: 比活 = FSH生物效价 (IU/mL ) ÷每毫升液体中 的蛋白含量 ( mg/mL )
其结果见表 2 :
表 2 所得干燥品的生物效价和比活
结果表明, 采用本发明的方法进行纯化, 可以使 HMG的比活大大提高。 实施例 3
pHMG冻干针剂的制备
用于制造 100瓶 pHMG冻干针剂, 且每瓶含 75IU FSH和 75 IU LH的例子 如下:
将实施例 1 所制备的高比活绝经期促性腺素 I 1. 64mg, 溶解于 5mL注 射用无热原水中, 用 0. 22 μ ηι过滤器进行无菌过滤, 并用注射用无热原水洗 涤过滤器。
将 lg乳糖溶解于 30mL注射用无热原水中,如果需要的话,用 HC1或 NaOH 调节 pH6. 5 ± 0. 2, 用 0. 22 μ ηι过滤器进行无菌过滤。 然后加入到上述 FSH溶 液中, 用注射用无热原水定容至 75mL, 混匀。
将上述溶液分装入安瓿瓶中, 每瓶 0. 75mL, 进行冷冻干燥。
所得到的安瓿瓶中, 每瓶含约 75 IU FSH、 75IU LH和 10mg乳糖。 在本发明提及的所有文献都在本申请中引用作为参考, 就如同每一篇文 献被单独引用作为参考那样。 此外应理解, 在阅读了本发明的上述讲授内容 之后, 本领域技术人员可以对本发明作各种改动或修改, 这些等价形式同样 落于本申请所附权利要求书所限定的范围。
Claims
1.一种高比活绝经期促性腺素(purified Human Menopausal Gonadotropins pHMG) , 其特征在于, 其比活不低于 5000 FSH国际单位 /mg蛋白。
2.如权利要求 1 所述的高比活绝经期促性腺素, 其特征在于, 所述的高比 活绝经期促性腺素的比活为不低于 6000 FSH国际单位 /mg蛋白; 较佳地, 其 比活为不低于 8000 FSH国际单位 /mg蛋白。
3.如权利要求 1 所述的高比活绝经期促性腺素, 其特征在于, 所述的绝经 期促性腺素来自重组的绝经期促性腺素或其变体、 或人尿来源的绝经期促性腺 素或其变体。
4.如权利要求 1 所述的高比活绝经期促性腺素, 其特征在于, 所述的高比 活绝经期促性腺素中, 卵泡剌激素 (FSH ) 与黄体生成素 (LH ) 的生物效价比例 为 1 : 0. 1一 3。
5.如权利要求 1 所述的高比活绝经期促性腺素, 其特征在于, 所述的高比 活绝经期促性腺素中, 卵泡剌激素 (FSH ) 与黄体生成素 (LH ) 的生物效价比例 为 1 : 0. 5 - 1. 4。
6.—种如权利要求 1一 5任一所述的高比活绝经期促性腺素 (pHMG) 的制备 方法, 其特征在于, 所述的方法包括步骤:
将低比活 HMG通过染料亲和层析纯化, 得到高比活绝经期促性腺素; 所述的低比活 HMG比活在 2000 FSH国际单位 /mg蛋白以下。
7.如权利要求 6所述的制备方法, 其特征在于, 所述的方法包括步骤:
( 1 ) 将含有低比活 HMG的溶液上样至染料亲和层析的层析柱上;
( 2 ) 用 pH6— 11的缓冲液进行洗涤; 和
( 3 ) 用 pH6— 11的缓冲液进行洗脱, 得到高比活绝经期促性腺素。
8.如权利要求 6所述的制备方法, 其特征在于, 所述含有低比活 HMG的溶 液中低比活 HMG的浓度为 0. 1— 10w/v%。
9.如权利要求 7所述的制备方法, 其特征在于, 所述含有低比活 HMG的溶 液 pH为 4一 8。
10.如权利要求 7所述的制备方法, 其特征在于, 所述的缓冲液选自醋酸钠 溶液、 醋酸铵溶液、 甘氨酸 -NaOH溶液、 Tri s-HCl溶液、 或磷酸盐溶液。
11.如权利要求 6— 10任一所述的制备方法, 其特征在于, 所述染料亲和层 析的层析柱的染料配基选自 Cibacron Blue , Orange , Red, Green。
12.如权利要求 6— 10任一所述的制备方法, 其特征在于, 所述染料亲和层 析的层析柱的固相载体选自皂土、 玻璃微球、 石英微球、 羟磷酸钙、 氧化铝、 聚丙烯酰胺凝胶、 淀粉凝胶、 葡聚糖凝胶、 纤维素、 或琼脂糖。
13.如权利要求 6— 10任一所述的制备方法, 其特征在于, 所述染料亲和层 析的层析柱选自 Blue Sepharose FF或 Blue Sepharose 6B。
14. 一种药物组合物, 其特征在于, 所述的组合物中含有治疗有效量的如 权利要求 1一 5任一所述的高比活绝经期促性腺素、 和药学上可接受的载体。
15 . 一种如权利要求 1 一 5 任一所述的高比活绝经期促性腺素的用途, 其特征在于, 用于制备治疗不育综合症的药物。
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US5990288A (en) * | 1997-10-21 | 1999-11-23 | Vitro Diagnostics, Inc. | Method for purifying FSH |
CN1262278A (zh) * | 1999-01-26 | 2000-08-09 | Ibsa生物化学研究股份有限公司 | 分离和纯化促卵泡激素和黄体生成激素的方法 |
JP2001323000A (ja) * | 2000-05-17 | 2001-11-20 | Ibsa Inst Biochimique Sa | Fsh(卵胞刺激ホルモン)とlh(黄体化ホルモン)の分離と精製工程 |
US6414123B1 (en) * | 1997-10-21 | 2002-07-02 | Vitro Diagnostics, Inc. | Method for purifying FSH |
CN1414019A (zh) * | 2002-08-14 | 2003-04-30 | 上海天伟生物制药有限公司 | 一种生产高纯度的绝经后尿促性腺素的方法 |
CN1587276A (zh) * | 2004-07-23 | 2005-03-02 | 南昌市万华生化制品有限公司 | 高纯度尿卵泡刺激素的纯化及生产工艺 |
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US5990288A (en) * | 1997-10-21 | 1999-11-23 | Vitro Diagnostics, Inc. | Method for purifying FSH |
US6414123B1 (en) * | 1997-10-21 | 2002-07-02 | Vitro Diagnostics, Inc. | Method for purifying FSH |
US20020165366A1 (en) * | 1997-10-21 | 2002-11-07 | Vitro Diagnostics, Inc. | Method for purifying FSH |
CN1262278A (zh) * | 1999-01-26 | 2000-08-09 | Ibsa生物化学研究股份有限公司 | 分离和纯化促卵泡激素和黄体生成激素的方法 |
JP2001323000A (ja) * | 2000-05-17 | 2001-11-20 | Ibsa Inst Biochimique Sa | Fsh(卵胞刺激ホルモン)とlh(黄体化ホルモン)の分離と精製工程 |
CN1414019A (zh) * | 2002-08-14 | 2003-04-30 | 上海天伟生物制药有限公司 | 一种生产高纯度的绝经后尿促性腺素的方法 |
CN1587276A (zh) * | 2004-07-23 | 2005-03-02 | 南昌市万华生化制品有限公司 | 高纯度尿卵泡刺激素的纯化及生产工艺 |
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