CN104353060A - Activin B在制备治疗神经退行性疾病的药物中的应用 - Google Patents
Activin B在制备治疗神经退行性疾病的药物中的应用 Download PDFInfo
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Abstract
本发明公开了ActivinB在制备治疗神经退行性疾病的药物中的应用,本发明通过体内、体外实验的研究,发现ActivinB可用于治疗神经退行性疾病中,能有效减轻神经细胞凋亡,增加纹状体区TH+神经纤维密度,降低炎症反应,显著提高患有帕金森病小鼠的转棒时间、矿场运动路程和速度,且基本无毒副作用,是一种有开发前景的治疗神经退行性疾病的新药物,尤其是有望被开发为用于治疗帕金森病的新药物。
Description
技术领域
本发明涉及Activin B在制备治疗神经退行性疾病的药物中的应用。
背景技术
帕金森病是第二大常见的神经系统退行性病变,其主要症状是运动功能的改变,如运动过缓、静止震颤、步态畸形和姿势不稳等病变,最后导致运动能力丧失。黑质纹状体多巴胺神经元死亡是帕金森主要的病理特征。
帕金森病的病因和发病机制十分复杂,至今仍未彻底明确,目前临床上帕金森病的治疗方案,包括药物治疗、细胞替代治疗和手术治疗等都未能达到理想的治疗效果。因此,寻找能够有效预防或改善帕金森症状的药物是目前最紧要的目标。
发明内容
本发明的目的在于提供Activin B在制备治疗神经退行性疾病的药物中的应用。
本发明所采取的技术方案是:
本发明通过体内、体外实验的研究,发现Activin B对神经退行性疾病具有治疗作用,尤其是对帕金森这一类神经退行性疾病具有很好的治疗效果,并且Activin B对细胞基本无毒副作用,具有很好的开发前景,有望被开发为用于治疗神经退行性疾病的新药物。
本发明的有益效果是:
本发明将Activin B用于治疗神经退行性疾病的药物中的应用中,证明了Activin B可减轻神经细胞凋亡,增加纹状体区TH+神经纤维密度,降低炎症反应,显著提高患有帕金森病小鼠的转棒时间、矿场运动路程和速度,且基本无毒副作用,是一种有开发前景的治疗神经退行性疾病的药物,尤其是有望被开发为用于治疗帕金森病的新药物。
附图说明
图1为MTT法检测Activin B对MPP+诱导细胞凋亡的影响;saline:用生理盐水处理的对照组,MPP+:经MPP+处理后用正常培养基培养,act5ng/ml:经MPP+处理后用含5ng/ml Activin B的培养基培养,act10ng/ml:经MPP+处理后用含10ng/ml Activin B的培养基培养,act25ng/ml:经MPP+处理后用含25ng/ml Activin B的培养基培养;
图2为Hoechst核染法检测Activin B对MPP+诱导细胞凋亡的影响;control:用生理盐水处理的对照组,MPP+:经MPP+处理后用正常培养基培养,mpp+act10ng/ml:经MPP+处理后用含10ng/ml Activin B的培养基培养,mpp+act25ng/ml:经MPP+处理后用含25ng/ml Activin B的培养基培养;
图3为anti-TH免疫组织化学染色法检测Activin B对MPTP诱导脑组织损伤的影响;
图4为不同处理组小鼠在转棒实验中的转棒时间;
图5为不同处理组小鼠在旷场实验中的平均运动速度和运动总路程。
具体实施方式
下面结合具体实施例对本发明作进一步的说明,但并不局限于此。
Activin是转化生长因子超家族的一员,包括activin A,activin B及activin AB三种亚型,activin参与体内的激素水平调节、胚胎发育、抗炎以及器官与组织的损伤与修复。
实施例1
一、体外实验
1.1 实验细胞:SH-SY5Y细胞,培养于含1%青链霉素和10%胎牛血清的高糖DMEM培养基。MPP+和Activin B溶于生理盐水备用。
1.2 实验方法及分组:将SH-SY5Y细胞血清饥饿24小时,用含25μm/ml MPP+的培养基孵育细胞12h,换至正常培养基培养24h后,随机分成4组(第①组为MPP+模型组,MPP+处理后,用正常培养基继续培养24h;第②组MPP++Activin B 5ng/ml:MPP+处理后用含5ng/ml Activin B的培养基培养24h;③MPP++Activin B 25ng/ml:MPP+处理后用含25ng/ml Activin B的培养基培养24h,④MPP++Activin B 50ng/ml:MPP+处理后用含50ng/ml Activin B的培养基培养24h;另取第⑤组saline对照组,取血清饥饿24小时的SH-SY5Y细胞用含saline的培养基进行培养。各组间的细胞用量、培养液体积、培养时间和温度等其他条件均一致。
1.3 MTT法检测细胞活性
将浓度为105个/mL细胞接种50μL于96孔板中,按照1.2中的实验方法及分组进行实验。检测前每孔加入50μL MTT,细胞送回培养箱孵育2h,每孔加100μL DMSO溶解,30min后紫外分光光度计读数。
检测结果如图1所示,从中可以看出MPP+可诱导SH-SY5Y细胞发生凋亡,在加入10ng/ml、25ng/ml Activin B后,Activin B对MPP+处理的SH-SY5Y细胞发挥了神经保护作用,减少了细胞的凋亡。
1.4 Hoechst核染检测细胞凋亡情况
细胞接种于24孔板中,按照以上细胞实验方法及分组进行实验。Hoechst染核液与细胞共孵育15min,即拿去倒置荧光显微镜下拍照。观察核碎裂核固缩情况。
检测结果如图2所述,从中可以看出MPP+可诱导SH-SY5Y细胞发生核碎裂核固缩(如图2中的箭头所示),在加入10ng/ml、25ng/ml Activin B后,Activin B对MPP+处理的SH-SY5Y细胞发挥了神经保护作用,减少了细胞的核碎裂核固缩。
综上所述,体外实验MTT检测与Hoechst荧光染色结果显示Mpp+可显著诱导细胞凋亡, Activin B可以明显减轻MPP+导致的SH-SY5Y细胞凋亡,并且呈现出剂量依赖性。可见,Activin B可有效抑制SH-SY5Y细胞凋亡。
二、体内实验
2.1 实验动物:8-10周龄雄性C57小鼠(体重20-25g)。所有小鼠自由饮水饮食,并维持在12h:12h光:暗的恒温恒湿环境中。
2.2 帕金森病小鼠模型的制备:MPTP 20mg/kg,连续腹腔注射5天,制作帕金森病小鼠模型,参照文献(V. Jackson-Lewis and S. Przedborski. Protocol for the MPTP mouse model of Parkinson's disease[J]. Nat Protoc, 2007, 2(1): 141-51.)
2.3动物分组及药物处理:①Saline+saline组:连续腹腔注射Saline(生理盐水)5天,注射剂量和MPTP相同,小鼠脑纹状体尾壳核区(CPu)立体定位注射saline,每侧2μL。
②MPTP+saline组:连续腹腔注射MPTP 5天,一天一次,注射量为20mg/kg,然后对小鼠脑纹状体尾壳核区(CPu)立体定位注射无菌生理盐水,每侧2μL,一天一次,共注射5天。
③MPTP+activin B组: 连续腹腔注射MPTP 5天,一天一次,注射量为20mg/kg,然后对小鼠脑纹状体尾壳核区(CPu)立体定位注射Activin B,每侧注射2μL 25ng/μL的Activin B,一天一次,共注射5天。
2.4 anti-TH免疫组织化学染色
按上述2.3的动物分组及药物处理,在小鼠立体定位注射7、21、35天后,用4%多聚甲醛灌注固定后,取脑放置于4%多聚甲醛中固定过夜,转移到20%蔗糖中脱水过夜,再转移至30%蔗糖脱水过夜,冰冻切片机切片,厚度25μm,放置于细胞保护液中。采用捞片法进行anti-TH免疫组织化学染色。
染色结果如图3所示,从中可以看出MPTP可引起黑质多巴胺能神经元细胞数量减少(如图3A和图3B所示),同时,MPTP还可以引起纹状体区TH阳性神经元数减少,而给予ActivinB进行预处理后第7天,Activin B对TH阳性神经元有神经保护作用,降低MPTP对TH阳性神经元的损伤(图3C和图3D所示)。在21天后Activin B组与MPTP的效果没有明显差异,由于Activin B较MPTP的作用时间短,其药效时间有限,而MPTP的药效时间较长,因此若想取得好的治疗效果,需要间断连续地给予Activin B进行治疗(图3C和图3D所示)。
2.5转棒实验
转棒实验采用小鼠转棒仪完成,按照上述2.3的动物分组及药物处理,在小鼠立体定位注射7、21、35天后,将各组小鼠站立于传帮仪滚轴处30s以适应环境。转棒仪设定参数终速度40转/min,加速度30s,总记录时间为300s,期间记录不同轨道小鼠跌落的时间。
实验结果如图4所示,从中可以看出在MPTP处理后的第七天起,MPTP可导致小鼠转棒时间减少,而给予Activin B进行治疗后第7天,ActivinB可明显增长小鼠的转棒时间,减轻MPTP诱异模拟的帕金森病症;在21天后各组之间没有明显的差异。
2.6旷场实验
按照上述2.3的动物分组及药物处理,在小鼠立体定位注射7、21、35天后,将各组小鼠放置于行为学检测室中一小时适应环境,提取小鼠尾部放置于矿场中间部位,小鼠于矿场中自由活动5min,摄像头记录采集小鼠活动,采取五分钟内平均运动速度和运动总路程作为参考指标。
实验结果如图5所示,从图5A中可以看出在MPTP处理第七天后,MPTP可导致小鼠平均运动速度减慢,而给予ActivinB进行治疗后第7天,ActivinB可明显增加小鼠平均运动速度。从图5B中可以看出在MPTP处理第七天后,MPTP可导致小鼠运动总路程减少,而给予ActivinB进行治疗后第7天,ActivinB可明显增加小鼠运动总路程。在21天后各组之间没有明显的差异。
上述体内实验结果显示,小鼠脑部双侧CPu区立体定位注射25ng/ul的ActivinB 2ul,在第7天,与MPTP组相比,ActivinB注射组CPu区 TH+神经纤维密度明显增高(p﹤0.05),转棒时间、矿场运动路程和速度显著增高(p﹤0.05),可见,Activin B在MPTP诱导的帕金森病小鼠模型中增加纹状体区TH+神经纤维密度,对神经元起保护作用。
综上所述,Activin B可减轻神经元细胞凋亡,增加纹状体区TH+神经纤维密度,降低炎症反应,显著提高转棒时间、矿场运动路程和速度,且基本无毒副作用,是一种有开发前景的治疗神经退行性疾病的药物,尤其是治疗帕金森病的药物。Activin B是转化生长因子超家族的一员,通过降低细胞凋亡,增加纹状体区TH+神经纤维密度,降低炎症反应,从而减轻帕金森病多巴胺能神经元损伤,改善帕金森病模型小鼠行为学变化,在神经元细胞损伤中具有保护作用。
Claims (5)
1.Activin B在制备治疗神经退行性疾病的药物中的应用。
2.根据权利要求1所述的应用,其特征在于:所述神经退行性疾病为帕金森病。
3.一种制备治疗神经退行性疾病的药剂,其特征在于:其活性成分为Activin B。
4.根据权利要求3所述一种制备治疗神经退行性疾病的药剂,其特征在于:含有活性成分Activin B和药物上可接受的载体和/或稀释剂。
5.根据权利要求3~4任一所述一种制备治疗神经退行性疾病的药剂,其特征在于:所述神经退行性疾病为帕金森病。
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113041240A (zh) * | 2019-12-27 | 2021-06-29 | 旌德尚德药缘科技有限公司 | Act001在制备治疗帕金森药物和治疗nlrp3炎症小体介导的神经炎药物上的应用 |
| CN115925811A (zh) * | 2021-07-21 | 2023-04-07 | 中国药科大学 | 多肽及其在制备抗神经退行性疾病药物方面的应用 |
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| WO2006108651A2 (en) * | 2005-04-12 | 2006-10-19 | Develogen Aktiengesellschaft | Use of activin products for preventing and treating diabetes and/or metabolic syndrome |
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| WO2006108651A2 (en) * | 2005-04-12 | 2006-10-19 | Develogen Aktiengesellschaft | Use of activin products for preventing and treating diabetes and/or metabolic syndrome |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113041240A (zh) * | 2019-12-27 | 2021-06-29 | 旌德尚德药缘科技有限公司 | Act001在制备治疗帕金森药物和治疗nlrp3炎症小体介导的神经炎药物上的应用 |
| CN115925811A (zh) * | 2021-07-21 | 2023-04-07 | 中国药科大学 | 多肽及其在制备抗神经退行性疾病药物方面的应用 |
| CN115925811B (zh) * | 2021-07-21 | 2025-04-04 | 中国药科大学 | 多肽及其在制备抗神经退行性疾病药物方面的应用 |
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