超声促SDF-1α和BMP2基因转染治疗大鼠急性心肌梗死的体内研究
发布时间:2021-01-16 06:16
目的:超声靶向微泡爆破(Ultrasound-targeted microbubble destruction,UTMD)技术作为一种新型的无创性基因转移技术,其介导外源性基因修复受损心肌组织的研究正在迅速发展,但一般为转染单个基因的研究,同时转染两个基因的研究极其罕见,本研究旨在利用超声靶向微泡爆破技术(Ultrasound-targeted microbubble destruction,UTMD)定向转染载外源性趋化因子基质细胞衍生因子1α(Stromal cell-derived factor-1α,SDF-1α)和分化因子骨形态发生蛋白2(Bone morphogenetic protein2,BMP2)的重组腺病毒到急性心肌梗死(Acute myocardial infarction,AMI)大鼠心脏,促进心肌组织再生,修复受损心肌,改善心脏功能。方法:结扎左前降支后6小时,利用UTMD技术,将载外源性趋化因子SDF-1α、分化因子BMP2以及不同比例的SDF-1α和BMP2的重组腺病毒分别转染大鼠心脏,检测基因转染、心肌修复以及心脏功能改善情况。术前2天及术后28天分别检...
【文章来源】:新疆医科大学新疆维吾尔自治区
【文章页数】:46 页
【学位级别】:硕士
【部分图文】:
UTMD介导的基因转染后各组大鼠心肌梗死面积(a)及定量分析(b)
图 2 UTMD 介导的基因转染后各组大鼠心肌内新生血管形成(a)及定量分析(b)(a)各组大鼠治疗 4 周后梗死周边心肌组织免疫组织化学染色后各自的组织切片。标尺为 50μm。(b)通过计数每平方毫米面积内 vWF 阳性的细胞数量对新生血管密度进行定量分析,假手术组大鼠的心声血管密度与其他各组大鼠相比均有显著差异。每组 6 只大鼠。Fig. 2 Neovascularization(a)and quantitative analysis(b)after UTMD-mediated gene deliveryin each group.(a) Representative immunohistochemical staining assay detected vWF-positive cells in the infarctborder area from each groups at 4 weeks. Bar, 50μm.(b) Quantitative analysis of neovascularization density by counting the number of vWF-positivecells per square micrometer area in each group and the Sham group was significantly differentfrom others. N=6/group.注释:▲P < 0.05 vs. MI; ※P < 0.05 vs. MI+UTMD; #P < 0.05 vs. MI+UTMD-BMP; *P < 0.05 vs.MI+UTMD-SDF; &P <0.05 vs. MI+UTMD-SDF/BMP1/2; ¤ P < 0.05 vs.MI+UTMD-SDF/BMP1.
图 2 UTMD 介导的基因转染后各组大鼠心肌内新生血管形成(a)及(a)各组大鼠治疗 4 周后梗死周边心肌组织免疫组织化学染色后各自的μm。(b)通过计数每平方毫米面积内 vWF 阳性的细胞数量对新生血管密度进组大鼠的心声血管密度与其他各组大鼠相比均有显著差异。每组 6 只大鼠Fig. 2 Neovascularization(a)and quantitative analysis(b)after UTMD-min each group.(a) Representative immunohistochemical staining assay detected vWF-positborder area from each groups at 4 weeks. Bar, 50μm.(b) Quantitative analysis of neovascularization density by counting the numcells per square micrometer area in each group and the Sham group was sigfrom others. N=6/group.注释:▲P < 0.05 vs. MI; ※P < 0.05 vs. MI+UTMD; #P < 0.05 vs. MI+UTMMI+UTMD-SDF; &P <0.05 vs. MI+UTMD-SDF/BMP1/2; ¤MI+UTMD-SDF/BMP1.
【参考文献】:
期刊论文
[1]Effect of CXCR4 pretreated with ultrasound-exposed microbubbles on accelerating homing of bone marrow mesenchymal stem cells to ischemic myocardium in AMI rats[J]. Jun-Yi Gu,Hui-Fen Shi,Xiu-Li Gao,Qing-Qing Ma,Bo Zhang. Asian Pacific Journal of Tropical Medicine. 2015(09)
[2]超声辐照微泡介导5-氮杂胞苷诱导人骨髓间充质干细胞心肌样分化的实验研究[J]. 陈玲玲,尹立雪. 中华超声影像学杂志. 2013 (11)
[3]骨形态蛋白2体外诱导大鼠骨髓间充质干细胞分化为心肌样细胞[J]. 王海萍,张雷,王立轩,赵静. 解剖学报. 2009 (02)
[4]超声斑点追踪技术评价微泡造影剂介导SERCA2a基因治疗心肌梗死大鼠的实验研究[J]. 姜新魁,穆玉明,王春梅,唐琪,关丽娜. 中华超声影像学杂志. 2010 (12)
硕士论文
[1]超声介导SDF-1α基因转染急性心肌梗死大鼠心脏对非靶组织的影响[D]. 苏高峰.新疆医科大学 2017
本文编号:2980308
【文章来源】:新疆医科大学新疆维吾尔自治区
【文章页数】:46 页
【学位级别】:硕士
【部分图文】:
UTMD介导的基因转染后各组大鼠心肌梗死面积(a)及定量分析(b)
图 2 UTMD 介导的基因转染后各组大鼠心肌内新生血管形成(a)及定量分析(b)(a)各组大鼠治疗 4 周后梗死周边心肌组织免疫组织化学染色后各自的组织切片。标尺为 50μm。(b)通过计数每平方毫米面积内 vWF 阳性的细胞数量对新生血管密度进行定量分析,假手术组大鼠的心声血管密度与其他各组大鼠相比均有显著差异。每组 6 只大鼠。Fig. 2 Neovascularization(a)and quantitative analysis(b)after UTMD-mediated gene deliveryin each group.(a) Representative immunohistochemical staining assay detected vWF-positive cells in the infarctborder area from each groups at 4 weeks. Bar, 50μm.(b) Quantitative analysis of neovascularization density by counting the number of vWF-positivecells per square micrometer area in each group and the Sham group was significantly differentfrom others. N=6/group.注释:▲P < 0.05 vs. MI; ※P < 0.05 vs. MI+UTMD; #P < 0.05 vs. MI+UTMD-BMP; *P < 0.05 vs.MI+UTMD-SDF; &P <0.05 vs. MI+UTMD-SDF/BMP1/2; ¤ P < 0.05 vs.MI+UTMD-SDF/BMP1.
图 2 UTMD 介导的基因转染后各组大鼠心肌内新生血管形成(a)及(a)各组大鼠治疗 4 周后梗死周边心肌组织免疫组织化学染色后各自的μm。(b)通过计数每平方毫米面积内 vWF 阳性的细胞数量对新生血管密度进组大鼠的心声血管密度与其他各组大鼠相比均有显著差异。每组 6 只大鼠Fig. 2 Neovascularization(a)and quantitative analysis(b)after UTMD-min each group.(a) Representative immunohistochemical staining assay detected vWF-positborder area from each groups at 4 weeks. Bar, 50μm.(b) Quantitative analysis of neovascularization density by counting the numcells per square micrometer area in each group and the Sham group was sigfrom others. N=6/group.注释:▲P < 0.05 vs. MI; ※P < 0.05 vs. MI+UTMD; #P < 0.05 vs. MI+UTMMI+UTMD-SDF; &P <0.05 vs. MI+UTMD-SDF/BMP1/2; ¤MI+UTMD-SDF/BMP1.
【参考文献】:
期刊论文
[1]Effect of CXCR4 pretreated with ultrasound-exposed microbubbles on accelerating homing of bone marrow mesenchymal stem cells to ischemic myocardium in AMI rats[J]. Jun-Yi Gu,Hui-Fen Shi,Xiu-Li Gao,Qing-Qing Ma,Bo Zhang. Asian Pacific Journal of Tropical Medicine. 2015(09)
[2]超声辐照微泡介导5-氮杂胞苷诱导人骨髓间充质干细胞心肌样分化的实验研究[J]. 陈玲玲,尹立雪. 中华超声影像学杂志. 2013 (11)
[3]骨形态蛋白2体外诱导大鼠骨髓间充质干细胞分化为心肌样细胞[J]. 王海萍,张雷,王立轩,赵静. 解剖学报. 2009 (02)
[4]超声斑点追踪技术评价微泡造影剂介导SERCA2a基因治疗心肌梗死大鼠的实验研究[J]. 姜新魁,穆玉明,王春梅,唐琪,关丽娜. 中华超声影像学杂志. 2010 (12)
硕士论文
[1]超声介导SDF-1α基因转染急性心肌梗死大鼠心脏对非靶组织的影响[D]. 苏高峰.新疆医科大学 2017
本文编号:2980308
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