The expression of the cell death-inducing DNA fragmentation factorα-like effector（CIDE）family including Cidea,Cideb,and Cidec was significantly increased in mouse and human models of obesity.However,there was less ...The expression of the cell death-inducing DNA fragmentation factorα-like effector（CIDE）family including Cidea,Cideb,and Cidec was significantly increased in mouse and human models of obesity.However,there was less information on these genes’expression in pigs.Here,we hypothesized that different fat accumulation between lean（Duroc×Landrace×Yorkshire gilts,DLY）and obese（Lantang）pigs was attributed to porcine CIDE-modulating lipid metabolism.Our data showed that Cidea and Cidec were expressed at a high level in adipose tissue,and at a relatively high level in skeletal muscle,whereas Cideb was mainly expressed in the liver in both breeds of pig.Lantang pigs had higher white adipose and skeletal muscle Cidea and Cidec mR NA abundance,and hepatic and muscle Cideb mR NA than DLY pigs.Lipid metabolism-related genes including sterol regulatory element binding protein 1c（SREBP-1c）,hepatocyte nuclear factor-4α（HNF-4α）,peroxisome proliferator-activated receptorγcoactivator-1α（PGC-1α）,fatty acid synthase（FASN）,diacylglycerol O-acyltransferase 1（DGAT1）,and DGAT2 showed a higher expression level in adipose tissue from obese pigs than in that from lean pigs.Lantang pigs exhibited higher mR NA abundance for liver SREBP-1c,HNF-4α,and PGC-1α,and higher skeletal muscle SREBP-1c,HNF-4α,PGC-1α,and DGAT2 expression,as compared with DLY pigs.However,the perlipin2 mR NA levels in adipose tissues,liver,and skeletal muscle were significantly lower in obese pigs than in their lean counterparts.Furthermore,plasma non-esterified fatty acid（NEFA）,glucose,and triacylglycerol（TAG）levels were greater in obese pigs than in lean pigs.Finally,data from correlation analysis further found that CIDE mR NA expression was positively correlated with back fat thickness（BFT）,abdominal fat mass（AFM）,and the levels of NEFA,TAG,and glucose in the two breeds.Collectively,these data revealed that the porcine CIDEs possibly modulated lipid metabolism and contributed to the development of fat deposition展开更多
A natural scorpion toxin BmK 16 was purified for the first time from the venom of the Chinese scorpion Buthus martensii Karsch (BmK) by using combined gel filtration, ion exchange and reversed phase chromatograph...A natural scorpion toxin BmK 16 was purified for the first time from the venom of the Chinese scorpion Buthus martensii Karsch (BmK) by using combined gel filtration, ion exchange and reversed phase chromatography. The sequence of the N terminal 8 amino acid residues was determined by Edman degradation. Using the N terminal sequence as a tag, the database searching revealed a hit in the scorpion cDNA Bank. The sequence for N terminal 8 amino acid residues, molecular weight and amino acid compositions of BmK 16 were identical with the calculated values according to the first 64 residues' sequence of the precursor peptide alpha neurotoxin TX16 derived from the sequence of the cDNA AF156597 (EMBL). The sequence specific resonance assignment of BmK 16 was achieved and the intact sequence of BmK 16 was determined as followings: VRDAY IAKPH NCVYE CARNE YCNDL CTKNG AKSGY CQWVG KYGNG CWCKE LPDNV PIRVP GKCH. Furthermore, the results from the sequence homology analysis and the toxicity assays indicated that BmK 16 was an α like scorpion neurotoxin.展开更多
目的探讨系统性红斑狼疮(SLE)患者外周血单个核细胞(PBMCs)中TIPE2(tumor necrosis factor-α induced protein 8 like 2)表达及其与SLE疾病活动度的关系。方法连续入选20例SLE患者做为SLE组,20名门诊健康体检者为对照组。采用实时荧光...目的探讨系统性红斑狼疮(SLE)患者外周血单个核细胞(PBMCs)中TIPE2(tumor necrosis factor-α induced protein 8 like 2)表达及其与SLE疾病活动度的关系。方法连续入选20例SLE患者做为SLE组,20名门诊健康体检者为对照组。采用实时荧光定量聚合酶链反应(RT-PCR),检测两组PBMCs中TIPE2mRNA的表达水平。以ΔCt=Ct(待测基因)-Ct(内参基因)来代表基因表达水平。结果 SLE患者PBMCsTIPE2mRNA表达水平(ΔCt=4.04±1.02)明显低于对照组(ΔCt=8.06±1.13,P<0.01);SLE患者PBMCs中TIPE2mRNA的表达水平与SLE疾病活动评分指数(SLEDAI)呈负相关(r=-0.568,P<0.01),而与SLE其他临床指标(如C3、C4、血沉等)无相关性。结论 SLE患者PBMCsTIPE2基因表达下降,且其表达水平与SLE疾病活动评分指数负相关,TIPE2基因可能在SLE的发病过程中发挥了一定作用。展开更多
基金supported by the National Natural Science Foundation of China(No.31402086)the China Agriculture Research System(CARS-36)+2 种基金the National Basic Research Program(973)of China(Nos.2013CB127301 and 2013CB127304)the Guangdong International Science and Technology Cooperation Program(No.2014A050503049)the Science and Technology Program of Guangdong Province(No.2016A020210041),China
文摘The expression of the cell death-inducing DNA fragmentation factorα-like effector（CIDE）family including Cidea,Cideb,and Cidec was significantly increased in mouse and human models of obesity.However,there was less information on these genes’expression in pigs.Here,we hypothesized that different fat accumulation between lean（Duroc×Landrace×Yorkshire gilts,DLY）and obese（Lantang）pigs was attributed to porcine CIDE-modulating lipid metabolism.Our data showed that Cidea and Cidec were expressed at a high level in adipose tissue,and at a relatively high level in skeletal muscle,whereas Cideb was mainly expressed in the liver in both breeds of pig.Lantang pigs had higher white adipose and skeletal muscle Cidea and Cidec mR NA abundance,and hepatic and muscle Cideb mR NA than DLY pigs.Lipid metabolism-related genes including sterol regulatory element binding protein 1c（SREBP-1c）,hepatocyte nuclear factor-4α（HNF-4α）,peroxisome proliferator-activated receptorγcoactivator-1α（PGC-1α）,fatty acid synthase（FASN）,diacylglycerol O-acyltransferase 1（DGAT1）,and DGAT2 showed a higher expression level in adipose tissue from obese pigs than in that from lean pigs.Lantang pigs exhibited higher mR NA abundance for liver SREBP-1c,HNF-4α,and PGC-1α,and higher skeletal muscle SREBP-1c,HNF-4α,PGC-1α,and DGAT2 expression,as compared with DLY pigs.However,the perlipin2 mR NA levels in adipose tissues,liver,and skeletal muscle were significantly lower in obese pigs than in their lean counterparts.Furthermore,plasma non-esterified fatty acid（NEFA）,glucose,and triacylglycerol（TAG）levels were greater in obese pigs than in lean pigs.Finally,data from correlation analysis further found that CIDE mR NA expression was positively correlated with back fat thickness（BFT）,abdominal fat mass（AFM）,and the levels of NEFA,TAG,and glucose in the two breeds.Collectively,these data revealed that the porcine CIDEs possibly modulated lipid metabolism and contributed to the development of fat deposition
基金ProjectsupportedbytheNationalNaturalScienceFoundationofChina (No .2 0 13 2 0 3 0 )
文摘A natural scorpion toxin BmK 16 was purified for the first time from the venom of the Chinese scorpion Buthus martensii Karsch (BmK) by using combined gel filtration, ion exchange and reversed phase chromatography. The sequence of the N terminal 8 amino acid residues was determined by Edman degradation. Using the N terminal sequence as a tag, the database searching revealed a hit in the scorpion cDNA Bank. The sequence for N terminal 8 amino acid residues, molecular weight and amino acid compositions of BmK 16 were identical with the calculated values according to the first 64 residues' sequence of the precursor peptide alpha neurotoxin TX16 derived from the sequence of the cDNA AF156597 (EMBL). The sequence specific resonance assignment of BmK 16 was achieved and the intact sequence of BmK 16 was determined as followings: VRDAY IAKPH NCVYE CARNE YCNDL CTKNG AKSGY CQWVG KYGNG CWCKE LPDNV PIRVP GKCH. Furthermore, the results from the sequence homology analysis and the toxicity assays indicated that BmK 16 was an α like scorpion neurotoxin.
文摘目的探讨系统性红斑狼疮(SLE)患者外周血单个核细胞(PBMCs)中TIPE2(tumor necrosis factor-α induced protein 8 like 2)表达及其与SLE疾病活动度的关系。方法连续入选20例SLE患者做为SLE组,20名门诊健康体检者为对照组。采用实时荧光定量聚合酶链反应(RT-PCR),检测两组PBMCs中TIPE2mRNA的表达水平。以ΔCt=Ct(待测基因)-Ct(内参基因)来代表基因表达水平。结果 SLE患者PBMCsTIPE2mRNA表达水平(ΔCt=4.04±1.02)明显低于对照组(ΔCt=8.06±1.13,P<0.01);SLE患者PBMCs中TIPE2mRNA的表达水平与SLE疾病活动评分指数(SLEDAI)呈负相关(r=-0.568,P<0.01),而与SLE其他临床指标(如C3、C4、血沉等)无相关性。结论 SLE患者PBMCsTIPE2基因表达下降,且其表达水平与SLE疾病活动评分指数负相关,TIPE2基因可能在SLE的发病过程中发挥了一定作用。
