CN1300597A - 磁定位治疗癌症肿瘤的复合材料及其制备方法 - Google Patents

磁定位治疗癌症肿瘤的复合材料及其制备方法 Download PDF

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CN1300597A
CN1300597A CN 01107707 CN01107707A CN1300597A CN 1300597 A CN1300597 A CN 1300597A CN 01107707 CN01107707 CN 01107707 CN 01107707 A CN01107707 A CN 01107707A CN 1300597 A CN1300597 A CN 1300597A
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胡季帆
秦宏伟
隋振贵
陆宏良
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Shandong University
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Abstract

一种磁定位治疗癌症的复合材料及其制备方法,属于纳米技术领域。主要内容是提供一种磁定位治疗癌症肿瘤的复合材料及制备方法,其组分为(Fe3O4)yAtXm(H2O)p,y=0.1~2,t=0.005~2,m=0.3~1.0,p=100-y-t-m。本发明克服了普通化疗的缺点,工艺简单,为定位施药治疗癌症开辟了新的途径。

Description

磁定位治疗癌症肿瘤的复合材料及其制备方法
本发明涉及磁定位治疗癌症的复合材料及其制备方法,属于纳米技术领域。
癌症是人类生存的杀手。众所周知,一般癌症化疗时,化疗药物作用于全身,病变处癌细胞与全身正常细胞均被化疗药所伤害,伴随着严重的负作用,病人痛苦不堪。定向施药是医疗界研究的重要方向。若将永磁块或片固定于癌灶处,同时将抗癌药物或抗癌材料通过静脉注射入血液,则通过血液循环,抗癌药物或抗癌材料可集中于病变处,从而达到定向施药。
本发明目的是为了克服普通化疗的缺点,而提供一种磁定位治疗癌症肿瘤的复合材料及制备方法。
本发明的目的是由如下技术方案实现的。
磁定位治疗癌症肿瘤的复合材料,其组分为:(Fe3O4)yAtXm(H2O)p,其中X是下列任一种:甲基丙烯酸、聚乙烯基吡咯烷酮,分子量为40000~40200,失水山梨醇聚氧乙烯(20)醚月桂酸脂,分子量为1000~1300,月桂酸聚乙二醇(8)脂,分子量为400~600,月桂酸聚乙二醇(12)脂,分子量为600~800,硬脂酸聚乙二醇(75)脂,分子量为3400~3600,A是纳米甲壳胺,分子量为120000~590000,纳米羟基磷灰石中的任一种,y,t,m和p分别为Fe3O4,A,X和H2O的质量百分比数,取值分别为y=0.1~2,t=0.005~2,m=0.3~1.0,p=100-y-t-m。
本发明同时提供一种制备磁定位治疗癌症肿瘤的复合材料的方法,具体制备步骤如下:
(1)磁性微粒Fe3O4的制备;
(2)按照组分式(Fe3O4)yAtXm(H2O)p分别称取X,蒸馏水以及经步骤(1)制备的纳米Fe3O4,混合均匀后超声处理5~40分钟,并充分搅拌;
(3)按照组分式(Fe3O4)yAtXm(H2O)p称取A,加入步骤(2)得到的液体中,超声处理5~20分钟,并充分搅拌,得到磁定位治疗癌症肿瘤所用的复合材料。
在制备过程中,步骤(1)可采取如下方法:按摩尔比为FeSO4·7H2O∶NaOH=1∶2的比例,分别称取上述两种材料,并将其分别配成FeSO4溶液和NaOH溶液,将FeSO4溶液倒入三口烧瓶中,加热30℃~85℃并搅拌,将NaOH溶液滴入FeSO4溶液中,生成灰绿色沉淀,向沉淀中通入过量空气至沉淀变为黑色为止,用蒸馏水洗涤沉淀并抽滤,继而干燥,得到粒径为30~50纳米的磁性微粒Fe3O4
另外,步骤(1)也可采取如下方法:按照其摩尔比为FeSO4·7H2O∶FeCl3·6H2O∶NH3·H2O=1∶2∶8的比例,分别取上述三种材料。将FeSO4·7H2O及FeCl3·6H2O混合配成溶液并充分搅拌,滴加氨水NH3·H2O,至形成黑色沉淀,用蒸馏水洗涤沉淀并抽滤,继而干燥,得到6~8纳米的磁性微粒Fe3O4
本发明特点是磁性纳米微粒Fe3O4用于磁性定向,纳米微粒A起到杀灭癌细胞的作用。本发明的优势在于为癌症定位施药治疗提供了一种新材料及其制备方法。该复合材料可通过磁铁定位于癌灶处,并对癌细胞(肝癌、肺癌等)有杀灭作用。
实施例1:
取y=1,t=0.05,m=0.5,p=98.45,A取纳米甲壳胺,X取聚乙烯基吡咯烷酮,分子量为,40011。
按照其摩尔比为FeSO4·7H2O∶NaOH=1∶2的比例,称取FeSO4·7H2O 27.8克配成1摩尔/升的FeSO4溶液,称取NaOH 8克配成2摩尔/升的NaOH溶液。将FeSO4溶液倒入三口烧瓶中,加热56℃并搅拌;将NaOH溶液滴入FeSO4溶液中,生成灰绿色沉淀;向沉淀中通入过量空气至沉淀变为黑色为止;用蒸馏水洗涤沉淀并抽滤,继而干燥,得到粒径为40纳米的磁性微粒Fe3O4;分别称取1克制备出的纳米Fe3O4,0.5克聚乙烯基吡咯烷酮以及98.45克蒸馏水,混合均匀后放入超声清洗仪中超声处理15分钟,并充分搅拌,然后加入0.05克纳米甲壳胺,分子量为180000,混合均匀后放入超声清洗仪中超声处理5分钟,并充分搅拌,得到磁定位治疗癌症肿瘤所用的复合材料。将强磁铁放在兔的肝病变区,将复合材料经静脉注射,复合材料富集定位于肝病变区,对癌细胞有很强的杀伤能力。
实施例2:
取y=1,t=0.08,m=0.8,p=98.12,A取纳米甲壳胺,X为甲基丙烯酸。
按照其摩尔比为FeSO4·7H2O∶NaOH=1∶2的比例,称取FeSO4·7H2O 27·8克配成1摩尔/升的FeSO4溶液,称取NaOH 8克配成2摩尔/升的NaOH溶液。将FeSO4溶液倒入三口烧瓶中,加热68℃并搅拌;将NaOH溶液滴入FeSO4溶液中,生成灰绿色沉淀;向沉淀中通入过量空气至沉淀变为黑色为止;用蒸馏水洗涤沉淀并抽滤,继而干燥,得到粒径为43纳米的磁性微粒Fe3O4;分别称取1克制备出的纳米Fe3O4,0.8克甲基丙烯酸以及98.12克蒸馏水,混合均匀后放入超声清洗仪中超声处理20分钟,并充分搅拌,然后加入0.08克纳米甲壳胺,分子量为160000,混合均匀后放入超声清洗仪中超声处理8分钟,并充分搅拌,得到磁定位治疗癌症肿瘤所用的复合材料。将强磁铁放在兔的肺病变区,将复合材料经静脉注射,复合材料富集定位于肺病变区,对癌细胞有强杀伤能力。
实施例3:
取y=1.2,t=0.01,m=0.4,p=98.39,A取纳米羟基磷灰石,X为失水山梨醇聚氧乙烯(20)醚月桂酸脂,分子量为1227。
按照其摩尔比为FeSO4·7H2O∶FeCl3·6H2O∶NH3·H2O=1∶2∶8的比例,分别取5.56克FeSO4·7H2O,10.81克FeCl3·6H2O,12.36毫升26%的氨水。将FeSO4·7H2O及FeCl3·6H2O混合配成溶液并充分搅拌,滴加氨水NH3·H2O,至形成黑包沉淀,用蒸馏水洗涤沉淀并抽滤,继而干燥,得到6纳米的磁性微粒Fe3O4;分别称取1.2克制备出的纳米Fe3O4,0.4克失水山梨醇聚氧乙烯(20)醚月桂酸脂以及98.39克蒸馏水,混合均匀后放入超声清洗仪中超声处理17分钟,并充分搅拌,然后加入0.01克纳米羟基磷灰石,混合均匀后放入超声清洗仪中超声处理10分钟,并充分搅拌,得到磁定位治疗癌症肿瘤所用的复合材料。将强磁铁放在兔的肝病变区,将复合材料经静脉注射,复合材料富集定位于肝病变区,对癌细胞有强杀伤能力。

Claims (4)

1.一种磁定位治疗癌症肿瘤的复合材料,其特征是组分为(Fe3O4)yAtXm(H2O)p,其中X是下列任一种:甲基丙烯酸、聚乙烯基吡咯烷酮,分子量为40000~40200,失水山梨醇聚氧乙烯(20)醚月桂酸脂,分子量为1000~1300,月桂酸聚乙二醇(8)脂,分子量为400~600,月桂酸聚乙二醇(12)脂,分子量为600~800,硬脂酸聚乙二醇(75)脂,分子量为3400~3600,A是纳米甲壳胺,分子量为120000~590000,纳米羟基磷灰石中的任一种,y,t,m和p分别为Fe3O4,A,X和H2O的质量百分比数,取值分别为y=0.1~2,t=0.005~2,m=0.3~1.0,p=100-y-t-m。
2.一种制备如权利要求1所述的磁定位治疗癌症肿瘤的复合材料的制备方法,其特征是具体制备步骤如下:
(1)磁性微粒Fe3O4的制备;
(2)按照组分式(Fe3O4)yAtXm(H2O)p分别称取X,蒸馏水以及经步骤(1)制备的纳米Fe3O4,混合均匀后超声处理5~40分钟,并充分搅拌;
(3)按照组分式(Fe3O4)yAtXm(H2O)p称取A,加入步骤(2)得到的液体中,超声处理5~20分钟,并充分搅拌,得到磁定位治疗癌症肿瘤所用的复合材料。
3.根据权利要求2所述的磁定位治疗癌症肿瘤的复合材料的制备方法,即按摩尔比为FeSO4·7H2O∶NaOH=1∶2的比例,分别称取上述两种材料,并将其分别配成FeSO4溶液和NaOH溶液,将FeSO4溶液倒入三口烧瓶中,加热30℃~85℃并搅拌,将NaOH溶液滴入FeSO4溶液中,生成灰绿色沉淀,向沉淀中通入过量空气至沉淀变为黑色为止,用蒸馏水洗涤沉淀并抽滤,继而干燥,得到粒径为30~50纳米的磁性微粒Fe3O4
4.根据权利要求2所述的磁定位治疗癌症肿瘤所用的复合材料的制备方法,其特征是步骤(1)也可采取如下方法,即按照其摩尔比为FeSO4·7H2O∶FeCl3·6H2O∶NH3·H2O=1∶2∶8的比例,分别取上述三种材料,将FeSO4·7H2O及FeCl3·6H2O混合配成溶液并充分搅拌,滴加氨水NH3·H2O,至形成黑色沉淀,用蒸馏水洗涤沉淀并抽滤,继而干燥,得到6~8纳米的磁性微粒Fe3O4
CN 01107707 2001-01-04 2001-01-04 磁定位治疗癌症肿瘤的复合材料及其制备方法 Pending CN1300597A (zh)

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