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      • KCI우수등재
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        황갈색 재래닭의 간에서 성장 단계별 차등 발현 유전자 분석

        이경연,유성란,정기철,장병귀,최강덕,이준헌,Lee, K.Y.,Yu, S.L.,Jung, K.C.,Jang, B.K.,Choi, K.D.,Lee, J.H. 한국가금학회 2007 韓國家禽學會誌 Vol.34 No.2

        한국 재래닭에서 성장에 따른 유전자들의 발현 변화를 알아보고 성장 촉진, 대사 및 면역 관련 유전자를 발굴하기 위하여 주령별로 닭의 간에서 RNA를 추출하였으며 10개의 arbitrary ACPs를 이용하여 차등 발현되는 유전자를 조사하였다. 발현량에 현저한 차이를 보이는 5개의 유전자들이 선별되었으며, 이 중 3개의 유전자들은 BLAST search 결과 이미 기능이 알려진 FTH1, SAA와 HSP90B1으로 밝혀졌다. 그러나 2개의 유전자들은 닭의 genome sequence가 끝났음에도 불구하고 기능이 밝혀져 있지 않아 앞으로 이 유전자들의 기능에 대한 연구가 지속되어야 함을 의미한다. 본 연구에서 닭의 간에서 성장 단계별로 발현 차이를 보이는 유전자들은 앞으로 다른 유전자와 단백질들과의 관계를 통하여 닭의 성장 및 지방 대사를 이해하는데 도움을 줄 것으로 사료된다. The chicken liver has been involved in various biological functions including detoxification, glycogen storage and plasma protein synthesis. The aim of this study was to investigate differentially expressed genes in chicken liver in four different growing stages. Using 10 arbitrary Annealing Control Primers (ACPs), five differentially expressed genes have been identified. Based on the Basic Local Alignment Search Tool (BLAST) search results, three of them were matched with previously known genes, and the other two were matched with unknown EST sequence and a hypothetical protein, respectively. In order to confirm the expression results, quantitative real-time PCR was also performed. The high similarities between the expression data using arbitrary ACPs and quantitative real-time PCR indicate that the identified genes are the real differentially expressed genes in different growing stages. The genes identified in this study can be used as valuable biomarkers in chicken with further investigation of the functions.

      • KCI등재
      • KCI등재

        추백리가 감염된 닭의 간에서 발현이 증가하는 APOA1 단백질의 확인

        정기철,이유주,유성란,이준헌,장병귀,구용범,소현경,최강덕,Jung K. C.,Lee Y. J.,Yu S. L.,Lee J. H.,Jang B. K.,Koo Y. B.,So H. K.,Choi K. D. 한국가금학회 2005 韓國家禽學會誌 Vol.32 No.1

        가금 추백리와 밀접한 관계가 있는 단백질을 동정하기 위하여 인위적으로 추백리를 유도한 개체와 정상인 개체의 간에서 단백질을 추출하였으며, 2차원 전기영동(2DE)과 mass spectrometry(MS)를 이용하여 차등 발현되는 단백질을 조사하였다. 총 300여개의 단백질 spot들이 관찰되었으며, 이중 발현양에 현저한 차이를 보이는 spot을 MALDI-TOF MS와 protein database search를 통해 분석한 결과, 가금 APOAI (Apolipoprotein A1)으로 확인되었다. 추백리가 감염된 닭의 간에서 APOA1 단백질의 증가는 손상된 혈관의 재생과 밀접한 관계가 있으며 추백리의 감염 여부를 나타내 주는 Bio-marker로서 활용될 수 있을 것으로 사료된다. The aim of this study was to investigate differentially expressed proteins between normal chicken liver and chicken liver inffeted by Salmonella pullorum. 2-dimensional electrophoresis (2DE) and mass spectrometry (MS) were used to identify the proteins. More than 300 protein spots were detected on silver stained 2DE gels using pH 3$\~$10 gradients. The most outstanding protein spot was further analyzed by MALDI-TOF MS and protein database using the Mascot search engine. The protein was finally identified as APOAI (Apolipoprotein AI). Based on the known function of the APOAI, this gene acts protective action against the accumulation of platelet thrombin at the site of vascular damage for the pullorum disease. Therefore APOAI protein, identified in this study, can be a valuable biomarker in relation to the pullorum disease in chicken.

      • KCI등재

        한우 c-fos 유전자의 염기서열 및 발현분석

        유성란,정행진,정기철,이준헌,조규완,최재관,나기준,상병찬 한국동물자원과학회 2003 한국축산학회지 Vol.45 No.6

        Cellular FOS(c-fos) protein is a transcription factor that forms heterodimers mostly with c-jun family and stimulates the transcription of genes containing AP-1 regulatory elements. This c-fos expression can control growth and differentiation of various precursor cells including myoblasts. The controls by c-fos gene have been identified for affecting skeletal muscle fiber traits which are the key determinants of meat quality in pigs. As a first step for identifying the relationship between c-fos gene and meat quality traits in cattle, we fully sequenced 1,443 bp of Hanwoo c-fos mRNA and analyzed expression patterns from various organs and muscle tissues. The sequence identities of Hanwoo c-fos with that of human, pig and mouse showed 89.8%, 93.3% and rib muscle from 7 organs and 9 different parts of muscles investigated. These results presented here can be used as a valuable marker for meat quality related traits in cattle with further verification.

      • KCI우수등재

        한우의 β-lactoglobulin 유전자 발현조절부위의 염기서열 분석

        이상훈,상병찬,유대열,이태훈,류승희,유성란 한국동물자원과학회 2000 한국축산학회지 Vol.42 No.4

        This study was analyzed by PCR technique with specific primers in order to investigate the characterizations of ,β-lactoglobulin promoter in Korean cattle. This study confirmed amplified product of 776bp fragments obtained from the amplification of β-lactoglobulin promoter from genomic DNA using PCR in Korean cattle. The nucleotide sequence of β-lactoglobulin promoter in Korean cattle as compared with bovine β-lactoglobulin(β-LG) (Lorraine et al., 1997) was different in eight nucleotides and showed high homology as about 98.9%. Also, the transcriptional factors of β-lactoglobulin promoter in Korean cattle could be confirmed that existed at the same position of bovinc β-lactoglobulin promoter by reported study such as AP-2(activator protein-2), NF-1(nuclear factor-1), MGF(mammary gland factor) and MPBF(milk protein binding factor). But we confirmed that Korean cattle as different from Holstein, substituted C→T at -362bp of NF-1 and -204bp of MPBF. As a consequence, The sequences of β-LG promotor was showed a high homology between Korean cattle and Holstein. Furthermore, we should be studied that relationships between the control of gene expression and nucleotide sequences of transcription factor NF-1 and MPBF in Korean cattle and Holstein.

      • KCI우수등재

        재래산양 락토페린 유전자 5' Flanking 영역의 특성에 관한 연구

        상병찬,유대열,유성란,이태훈,신상태,이경광 한국축산학회 2000 한국축산학회지 Vol.42 No.1

        Lactoferrin(Lf), a ferric ion(Fe^(3+))-binding glycoprotein, is found most notably in milk and some exocrine secretions. It is a main antimicrobial component of colostrum and milk that contributes to protection of the infant against infectious diseases. To analyze 5' flanking region of Korean native goat lactoferrin gene, we cloned and sequenced 975 by of 5' flanking region of Korean native goat Lf gene. When compared to those of bovine and human Lf, the nucleotide sequences exhibited about 90.9% and 49.7% homology, respectively. The transcription start site was localized by primer extension to residue C, which is 38 nucleotides upstream from the ATG start codon. The 5' flanking region of Korean native goat lactoferrin gene contains putative transcription factor binding sites such as SP1, CAT, C/EBP and GATA-1.

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