• 제목/요약/키워드: Cloned pigs

검색결과 223건 처리시간 0.026초

Genotypic Diversity of the Complete Open-Reading Frame 7 Sequences of Porcine Reproductive and Respiratory Syndrome Viruses in Korea and Coexistence of Two Genotypes

  • Chu, Jia-Qi;Kim, Myung-Cheol;Park, Chang-Sik;You, Myung-Jo;Jun, Moo-Hyung
    • 한국임상수의학회지
    • /
    • 제25권3호
    • /
    • pp.139-145
    • /
    • 2008
  • To investigate the genotypic diversity of the porcine reproductive and respiratory syndrome viruses (PRRSV) in Korea, we examined 92 clinical samples from three provinces by RT-PCR and a nested PCR, and the complete open-reading frame 7 (ORF 7) sequences of 15 samples selected from 72 PCR-positive specimens were analyzed. When we compared nucleotide (amino acid) sequences of 80 isolates from Korea and overseas countries, the sequences of 7 samples belonged to North American (NA)-genotype, and those of 8 samples, to European (EU)-genotype. The nucleotide (amino acid) identities between two genotypes were 63.7% (59.8%) to 65.1% (63.1%). When compared with NA prototype VR-2332, the 7 strains of NA-genotype shared 89.8% (93.6%) to 91.2% (96.0%) identity of nucleotide (amino acid) sequence. The 8 strains of EU-type shared 93.6% (92.3%) to 94.3% (93.8%) identity of nucleotide (amino acid) sequence as compared to EU prototype Lelystad. In phylogenetic tree analysis by neighbor-joining method, all of the 8 EU-type strains were clustered into group 4 distinct from ED-prototype Lelystad (group 1). In NA-genotype, 24 domestic isolates reported previously and the 7 strains of NA-type determined in this study were clustered into group 1, while US prototype VR 2332 was classified into different group (group 2). These results suggest that emergence of EU-genotype and the dual-infection of NA- and EU-genotypes may be prevalent in the pig farms in Korea. The high degree of genetic diversity of field PRRSVs should be taken into consideration for control and preventive measures.

Confirming Single Nucleotide Polymorphisms from Expressed Sequence Tag Datasets Derived from Three Cattle cDNA Libraries

  • Lee, Seung-Hwan;Park, Eung-Woo;Cho, Yong-Min;Lee, Ji-Woong;Kim, Hyoung-Yong;Lee, Jun-Heon;Oh, Sung-Jong;Cheong, Il-Cheong;Yoon, Du-Hak
    • BMB Reports
    • /
    • 제39권2호
    • /
    • pp.183-188
    • /
    • 2006
  • Using the Phred/Phrap/Polyphred/Consed pipeline established in the National Livestock Research Institute of Korea, we predicted candidate coding single nucleotide polymorphisms (cSNPs) from 7,600 expressed sequence tags (ESTs) derived from three cDNA libraries (liver, M. longissimus dorsi, and intermuscular fat) of Hanwoo (Korean native cattle) steers. From the 7,600 ESTs, 829 contigs comprising more than two EST reads were assembled using the Phrap assembler. Based on the contig analysis, 201 candidate cSNPs were identified in 129 contigs, in which transitions (69%) outnumbered transversions (31%). To verify whether the predicted cSNPs are real, 17 SNPs involved in lipid and energy metabolism were selected from the ESTs. Twelve of these were confirmed to be real while five were identified as artifacts, possibly due to expressed sequence tag sequence error. Further analysis of the 12 verified cSNPs was performed using the program BLASTX. Five were identified as nonsynonymous cSNPs, five were synonymous cSNPs, and two SNPs were located in 3'-UTRs. Our data indicated that a relatively high SNP prediction rate (71%) from a large EST database could produce abundant cSNPs rapidly, which can be used as valuable genetic markers in cattle.

Phospholipase D in Guinea Pig Lung Tissue Membrane is Regulated by Cytosolic ARF Proteins

  • Chung, Yean-Jun;Jeong, Jin-Rak;Lee, Byung-Chul;Kim, Ji-Young;Park, Young-In;Ro, Jai-Youl
    • Journal of Microbiology and Biotechnology
    • /
    • 제13권6호
    • /
    • pp.897-905
    • /
    • 2003
  • Phospholipase D (PLD) and ADP-ribosylation factor (ARF) were partially purified on a series of column chromatography, and their biochemical properties were characterized to understand the regulatory mechanism of PLD activation by ARF protein in the antigen-induced immune responses in guinea pigs. Heparin Sepharose and high-Q Sepharose column chromatographies were used for the purification of PLD, and Sephadex G-25, DEAE Sephacel, Source 15 PHE (HIC), Superdex-75, and Uno-Q column chromatographies were used for the purification of ARF. The purified PLD and ARF proteins were identified with anti-rabbit PLD- or ARF-specific antibodies, showing about 64 or 85 kDa for the molecular mass of PLD and 29 or 35 kDa for the sizes of ARF. Partial cDNA of ARF3 was cloned by RT-PCR in guinea pig lung tissue and its nucleotides and amino acids were sequenced. Guinea pig ARF3 showed 92% of nucleotides sequence identity and 100% of amino acid sequence homology with human ARF3. The ARF-regulated PLD activity was measured in the oleate or ARFs-containing mixed lipid vesicles. The purified and recombinant ARF (rARF) activities were assessed with the $GTP{\gamma}S$ binding assay. The PLD activity was induced by oleate in a dose-dependent manner. The purified ARF and recombinant ARF3 increased PLD activity in guinea pig lung tissues. These data show that the activity of membrane-bound PLD can be regulated by the cytosolic ARF proteins, suggesting that ARF proteins in guinea pig lung can act as a regulatory factor in controlling the PLD activity in allergic reaction.

인공 DNase의 리간드 화합물로써 2,9-(N,N-Dimethylethylenediaminomethyl)-1,10-phenanthroline 분자내 수소결합들의 역할 (The Roles of Hydrogen Bonds in 2,9-(N,N-Dimethylethylenediaminomethyl)-1,10-phenanthroline Molecule as a New Ligand Compound of Artificial DNase)

  • 성낙도;박경용
    • Applied Biological Chemistry
    • /
    • 제48권4호
    • /
    • pp.326-330
    • /
    • 2005
  • 인공 DNase의 새로운 리간드 분자로 설계된 2,9-(N,N-dimethylethylenediamino)-1,10-phenanthroline(A) 및 2,9-(N,N-Dimethylethylenediaminomethyl)-1,10-phenanthroline(B)의 Cu(II) 착 화합물에 의한 2',3'-cAMP의 촉매 가수분해 반응에서 리간드 분자의 아미노기들과 2',3'-cAMP의 인산기 사이에 형성되는 분자내 4개의 수소결합들로 인하여 (A) 및 (B)의 Cu(II) 착 화합물은 2,9-dimethyl-o-phenanthroline의 Cu(II) 착 화합물에 의한 2',3'-cAMP의 촉매 가수분해 반응 속도를 7만배 이상 빠르게 촉진 할 것으로 예측되었다.

Cloning and Distribution of Facilitative Glucose Transporter 2 (SLC2A2) in Pigs

  • Zuo, Jianjun;Huang, Zhiyi;Zhi, Aimin;Zou, Shigeng;Zhou, Xiangyan;Dai, Fawen;Ye, Hui;Feng, Dingyuan
    • Asian-Australasian Journal of Animal Sciences
    • /
    • 제23권9호
    • /
    • pp.1159-1165
    • /
    • 2010
  • Glucose is the main energy source for mammalian cells and its absorption is co-mediated by two different families of glucose transporters, sodium/glucose co-transporters (SGLTs) and facilitative glucose transporters (GLUTs). Here, we report the cloning and tissue distribution of porcine GLUT2. The GLUT2 was cloned by RACE and its cDNA was 2,051 bp long (GenBank accession no. EF140874). An AAATAA consensus sequence at nucleotide positions 1936-1941 was located upstream of the poly $(A)^+$ tail. Open reading frame analysis suggested that porcine GLUT2 contained 524 amino acids, with molecular weight of 57 kDa. The amino acid sequence of porcine GLUT2 was 87% and 79.4% identical with human and mouse GLUT2, respectively. GLUT2 mRNA was detected at highest level in porcine liver, at moderate levels in the small intestine and kidney, and at low levels in the brain, lung, muscle and heart. In the small intestine, the highest level was in the jejunum. In conclusion, the mRNA expression of GLUT2 was not only differentially regulated by age, but also differentially distributed along the small intestine of piglets, which may be related to availability of different intestinal luminal substrate concentrations resulting from different food sources and digestibility.

몇 가지 전이금속, Ni(II), Cu(II) 및 Zn(II) 3,6-bis(2'-pyridyl)pyridazine 착 화합물들의 세포 독성효과 (Cytotoxic Effects of Some Transition Metals, Nickel(II), Copper(II) and Zinc(II), with 3.6-bis(2'-pyridyl)pyridazines Complexes)

  • 권병목;이정옥;최상운;성낙도
    • Applied Biological Chemistry
    • /
    • 제49권1호
    • /
    • pp.21-24
    • /
    • 2006
  • 6종의 인체 암(폐암, 피부암, 결장암, 자궁암, 선암 및 뇌암)과 그의 17가지 세포주들에 대한 리간드 화합물 3,6-bis(2'-pyridyl)pyridazine(1) 과 3,6-bi s(6'-methyl-2'-pyridyl)pyridazine(2) 그리고 그들의 전이금속(Ni(II), Cu(II) 및 Zn(II)) 착 화합물들 $(3{\sim}6)$ 세포독성을 각각 측정하였다. 그 결과, 특히 Cu(II) 착 화합물, bis-[3,6-bis-(6'-methyl-2'-pyridyl)pyridazine-$k^2N^2,N^3$]chlorocopper(II)perchlorate (4)는 뇌암(SNB-19)과 결장암(SW-62) 세포주에 대하여 제1세대 항암제인 Cis-platin보다 높은 세포독성을 나타내었다.

Molecular Characterization and Chromosomal Mapping of the Porcine AMP-activated Protein Kinase ${\alpha}2$ (PRKAA2) Gene

  • Lee, Hae-Young;Choi, Bong-Hwan;Lee, Jung-Sim;Jang, Gul-Won;Lee, Kyung-Tai;Chung, Ho-Young;Jeon, Jin-Tea;Cho, Byung-Wook;Lee, Jun-Heon;Kim, Tae-Hun
    • Asian-Australasian Journal of Animal Sciences
    • /
    • 제20권5호
    • /
    • pp.615-621
    • /
    • 2007
  • AMP-activated protein kinase alpha 2 (PRKAA2) plays a key role in regulation of fatty acid and cholesterol metabolism. This study investigated the porcine PRKAA2 gene as a positional candidate for intramuscular fat and backfat thickness traits in pig chromosome 6. A partial fragment of the porcine PRKAA2 gene, amplified by PCR, contained a putative intron 3 including a part of exon 3 and 4, comparable with that of human PRKAA2 gene. Within the fragment, several single nucleotide polymorphisms were identified using multiple sequence alignments. Of these, TaqI restriction enzyme polymorphism was used for genotyping various pig breeds including Korean reference family. Using linkage and physical mapping, the porcine PRKAA2 gene was mapped in the region between microsatellite markers SW1881 and SW1680 on chromosome 6. Allele frequencies were quite different among pig breeds. The full length cDNA of the porcine PRKAA2 (2,145 bp) obtained by RACE containing 1,656 bp open reading frame of deduced 552 amino acids, had sequence identities with PRKAA2 of human (98.2%), rat (97.8%), and mouse (97.5%). These results suggested that the porcine PRKAA2 is a positional candidate gene for fat deposition trait at near telomeric region of the long arm of SSC 6.

개에서 치골골절과 연관된 장폐색 (Intestinal Strangulation Associated with Pubic Fracture in a Dog)

  • 이재일;김영석;정성각;김명진;박창식;김명철
    • 한국임상수의학회지
    • /
    • 제23권4권
    • /
    • pp.458-460
    • /
    • 2006
  • 체중 3.8 kg의 2년령 암컷인 잡종견이 10일전부터의 구토 및 식욕저하를 주증상으로 내원하였다. 이 개는 2개월 전에 자동차 사고에 의한 골반골절로 진단되었으나, 골절은 정복되지 아니 하였다. 2개월 후에 간헐성의 구토 및 식욕부진으로 고통을 받았다 Barium조영 방사선 검사에서, 장폐색으로 진단되었다. 외과수술을 통하여 골절 부위에서 장의 교액 및 유착에 의한 폐색이 확인되었다. 수술후 18개월이 경과된 시점에서 확인한 결과, 전신적인 신체상태가 양호하였다.

CO2 레이저와 scalpel을 이용한 위 절개 시 개에서의 창상 치유 평가 (Comparative study of wound healing in canine stomach with CO2 laser and scalpel incisions)

  • 이재연;황유선;김한결;최현석;정성목;조성환;박창식;김명철
    • 대한수의학회지
    • /
    • 제50권2호
    • /
    • pp.155-160
    • /
    • 2010
  • The objective of this study was to compare wound healing in stomach with $CO_{2}$ laser and scalpel incision by measuring the extent of bleeding, the ease of gastric incision, incision time, degree of adhesion and wound healing degree in dogs. Sixteen healthy dogs were used. Two symmetrical incisions were made in ventral aspect of the stomach between the greater and lesser curvatures were made with scalpel and 0.2 mm spot diameter $CO_{2}$ laser (8W, continuous wave) in sixteen dogs. And then each wound was closed with absorbable suture in a two-layer inverting seromuscular pattern. At 3, 7, 14 and 21 days after initial wounding, each wound was taken for histological observation. On surgery, the extent of bleeding, the ease of incision and incision time showed significant differences between the groups. The $CO_{2}$ laser provided better hemostasis (p < 0.05) and smaller postoperative adhesion compared with the scalpel. However, the scalpel produced faster speed of incision and was easier to handle than the $CO_{2}$ laser (p < 0.05). Although there was no considerable difference between the two groups in histological observation, necrosis and calcium deposit tended to be larger in the $CO_{2}$ laser than in the scalpel.

The Expression of Porcine Adiponectin and Stearoyl Coenzyme a Desaturase Genes in Differentiating Adipocytes

  • Wang, P.H.;Ko, Y.H.;Liu, B.H.;Peng, H.M.;Lee, M.Y.;Chen, C.Y.;Li, Y.C.;Ding, S.T.
    • Asian-Australasian Journal of Animal Sciences
    • /
    • 제17권5호
    • /
    • pp.588-593
    • /
    • 2004
  • The gene expression of porcine adiponectin and stearoyl coenzyme A desaturase (SCD) was investigated in this study. The partial gene sequences for adiponectin and SCD were amplified by RT-PCR from subcutaneous adipose tissue and cloned by TA cloning techniques. Sequences of these genes were determined and found to be highly homologous to that of other species, suggesting similar function of these genes as in other species. The transcripts of these adipocyte-related genes in pig tissues were measured by Northern analysis. The transcripts for adiponectin and SCD were highly expressed in porcine subcutaneous adipose tissue; the transcripts for SCD were also barely detected in the liver, but the greatest concentrations were in the adipose tissue. In porcine stromalvascular cells (S/V cells) cultured in vitro, transcripts for adiponectin and SCD increased gradually during adipocyte differentiation. The level of adipocyte adiponectin mRNA was associated with late adipocyte differentiation, indicating the gene may not be involved in adipocyte differentiation but has great importance in porcine adipocyte functions. The SCD transcripts were not detectable until 2 d after induction of adipocyte differentiation. It was highly expressed in differentiating porcine adipocytes (2 to 10 d after the induction of adipocyte differentiation), indicating a significant role of SCD in adipocytes.