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国家自然科学基金(30260079)

作品数:6 被引量:8H指数:2
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抗脂肪细胞膜蛋白多克隆抗体对猪脂类和内分泌代谢的影响被引量:4
2011年
给15 kg体重仔猪分别腹腔注射0,10,20,30 mg抗脂肪细胞膜蛋白多克隆抗体。结果显示,抗脂肪细胞膜蛋白抗体可显著提高血清脂蛋白脂酶(LPL)的活性和低密度脂蛋白(LDL)的含量(P<0.05),降低游离脂肪酸(FFA)和极低密度脂蛋白(VLDL)的含量(P<0.05),对血清总脂、甘油三酯(TG)、血清总胆固醇(CHO)和高密度脂蛋白(HDL)的含量无明显影响(P>0.05)。此外,该抗体可显著降低血清胰岛素(Ins)的水平(P<0.05),提高三碘甲状腺原氨酸(T3)的水平(P<0.05),而对血清生长激素(GH)和胰岛素样生长因子-1(IGF-1)的水平无明显影响(P>0.05)。表明抗脂肪细胞膜蛋白抗体可通过影响血液脂类代谢和激素的水平而减少体内脂肪沉积。
李卫真张永云刘凌云张曦高士争
关键词:脂类代谢内分泌
抗脂肪细胞特异膜蛋白单链抗体基因的克隆及序列分析被引量:2
2004年
从分泌抗 4 0ku脂肪细胞特异膜蛋白单克隆抗体的杂交瘤细胞中提取纯化mRNA ,经RT PCR扩增抗体轻、重链可变区基因 ,然后与Linker连接组装成单链抗体基因 (scFv)。结果 ,成功地构建了scFv基因 ,其排列方式为VH linker VL。经序列分析表明 ,scFv基因全长 74 1bp ,VH基因全长 36 9bp ,VL基因全长 32 7bp。
汪磊高士争张曦郝军元张玉静
关键词:脂肪细胞膜蛋白单链抗体单克隆抗体
抗脂肪细胞40000特异膜蛋白scFv-Fc融合抗体毕赤酵母表达载体的构建被引量:1
2007年
采用RT-PCR方法从人外周血淋巴细胞克隆IgG1Fc片段基因,经序列分析表明,该Fc片段基因长699bp,具有完整的铰链区、CH2和CH3结构区,与GenBank中人IgG1重链Fc片段基因序列完全相同。将Fc片段基因与pPICZαA酵母载体连接先构建pPIgG1质粒,然后将抗脂肪细胞40000特异膜蛋白的噬菌体scFv抗体基因插入到pPIgG1质粒,构建pPIgG1-scFv酵母表达载体。序列分析表明,scFv基因与Fc片段基因拼接正确,阅读框正确无误,表明成功构建了抗脂肪细胞40000特异膜蛋白scFv-Fc融合抗体毕赤酵母表达载体。本试验为下一步在毕赤酵母中大量表达与IgG结构相似、具有较高亲和力和生物活性的scFv-Fc融合抗体分子奠定了基础。
高士争尹革芬张玉静汪磊张曦
关键词:脂肪细胞单链抗体毕赤酵母
抗脂肪细胞膜蛋白抗体对试验性肥胖大鼠5种激素水平的影响
2017年
为了验证抗脂肪细胞膜蛋白抗体减少动物脂肪沉积的作用效果,并对该抗体用于人类肥胖的治疗提供理论依据和试验资料,本试验分别对4组试验性肥胖大鼠注射0、0.1、0.5、1.0mg/mL剂量的抗脂肪细胞膜蛋白抗体,并检测4周内大鼠血清中5种激素含量及变化。结果显示,试验组血清中胰岛素(INS)含量低于对照组,Ⅰ组与Ⅳ组4周内均差异显著(P<0.05);试验组与对照组、胰岛素样生长因子1(IGF-1)含量无显著差异(P>0.05);注射抗体后,试验组生长激素(GH)含量显著增高,且Ⅰ、Ⅲ组4周内均差异显著(P<0.05);第1周内,试验组三碘甲状腺原氨酸(T3)含量与对照组无显著差异(P>0.05),后3周内Ⅰ组和Ⅳ组差异显著(P<0.05);第1、3、4周内,Ⅰ组和Ⅳ组四碘甲状腺原氨酸(T4)含量差异显著(P<0.05),第2周内无显著差异,Ⅱ组和Ⅲ组差异均不显著(P>0.05)。此外,不同组间的差异显著性随注射剂量不同而不同。
刘超英胡忠梅李卫真张永云赵素梅代飞燕彭洁俞大阔和绍禹周明
关键词:激素
Effects of Monoclonal Antibody Against Adipocyte-Specific Membrane Protein on Lipid Metabolism in Pigs被引量:1
2008年
This study was to investigate the regulation of monoclonal antibodies against adipocyte membrane proteins (McAb) on lipid metabolism in pigs. Forty Landrace x Saba pigs were randomly divided into eight groups; the control group was given 10 mL saline and the treat groups were given monoclonal antibody against adipocyte-specific membrane protein with 0.1, 0.5, and 1.0 mg kg-I body weight at 15 and 60 kg body weight, respectively, by intraperitoneal injection. The results showed that McAb could increase, significantly, serum lipoprotein lipase activity and reduce serum nonesterified fatty acid (NEFA) content. Meanwhile, McAb increased content of serum lipid, triglyceride (TG), cholesterol (CHO), high density lipoprotein (HDL), and low density lipoprotein (LDL) both at 15 and 60 kg body weight. However, McAb affected more significantly the lipid metabolism at 15 kg body weight than at 60 kg body weight. Moreover, this effect of McAb on lipid metabolism exhibited dose-dependent effect. These results suggested that this monoclonal antibody increased lipase activity, promoted lipolysis, and utilization of lipid so that McAb could be applied to restrain excessive fat deposition in porcine production through the regulation of fat metabolism.
GAO Shi-zhengLIU Ling-yunZHAO Su-meiHU Hong-meiGE Chang-rongLIU Yong-gangZHANG Xi
关键词:PORCINE
Effects of Monoclonal Antibody Against Porcine 40-kDa Adipocyte-Specific Membrane Protein on Endocrine Secretion in Pigs被引量:1
2009年
The present study was to investigate the effect of monoclonal antibody against porcine 40-kDa adipocyte-specific membrane protein on endocrine secretion in pigs, in order to provide the evidence for application of this antibody to reduce excessive fat deposition in pig production. 40 Landrace×Saba pigs were randomly divided into 8 groups: 2 control groups were given saline with 10 mL, respectively, and the 6 treatment groups were given monoclonal antibody against porcine 40-kDa adipocyte-specific membrane protein with 0.1, 0.5, and 1.0 mg ·kg^-1 body weight at 15 or 60 kg body weight, respectively, all treatments were performed by intraperitoneal injection. The results showed that this monoclonal antibody could significantly reduce serum insulin level and increase levels of serum growth hormone (GH), insulin-like growth factor-1(IGF-1), triiodothyronine (T3), and tetraiodothyronine (T4) either at 15 or 60 kg body weight injection. However, more marked effect was observed at 15 kg body weight treatment. Moreover, the dose-dependent effect of this monoclonal antibody on endocrine secretion was also observed. This result revealed that this monoclonal antibody increased secretion of hormones regulating fat lysis and reduced secretion of hormones regulating fat synthesis, suggests the reduction of porcine excessive fat deposition by this monoclonal antibody was carried out through affecting hormones regulating fat metabolism.
LIU Ling-yunHU Hong-meiZHAO Su-meiZHANG XiDUAN GangGAO Shi-zheng
关键词:ENDOCRINE
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