• 대한치과의사협회지
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• 제10권9호
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• pp.585-586
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• 1972

The demonstration of glycoprotein in developing mandibular bone was observed histochemically, using Clara method and Von Kossa method. The glycoprotein reaction showed slight activity in New bilding bone matrix.

• International Journal of Industrial Entomology and Biomaterials
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• 제35권2호
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• pp.118-122
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• 2017

Porcine pseudorabies virus (PRV) causes the Aujeszky's disease (AD) which is economically important disease in the swine industry worldwide. Killed or live vaccines have been used to control this disease, but their efficacy and side effects remain problems to be solved. To solve these problems, in this study, production of recombinant PRV glycoprotein gB, gC and gD was investigated in insect expression system. Glycoprotein gB, gC and gD are regarded as the major immunogenic antigens in PRV. Abundant production and immunogenicity of glycoprotein gB, gC and gD were confirmed by SDS-PAGE and Western blot analysis, respectively. Optimal infection dose and time were also determined for the production of each recombinant PRV glycoprotein. Confirmation of glycosylation of recombinant gB, gC and gD suggested their usefulness as antigens for the development of diagnosis kit or vaccines for Aujeszky's disease.

• 한국동물학회지
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• 제33권2호
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• pp.191-199
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• 1990

토끼의 골격근에서 근소포체를 순수 분리하여 SDS-polyacrylamide gel전기영동법과 125 I-concanavalin A표지법으로 단백질과 당단백질의 조성을 조사하였다. 전기영동사에 나타난 대표적인 단백질은 $Ca^2$+-AThase, 80 Kd protein,calsequestrin,high affinity calcium binding protein, intrinsic glycoprotein이었으며, 160 Kd protein, 94 Kd protein,38 Kd protein, 34 Kd protein,24 Kd proteins도 존재하였다.특히, 막성계에 있는 heak protein으로 알려져 있는 80 Kd protein은 본 연구를 통해 주로 근소포체의 terminal cisternae에 들어 있음이 확인되었다. 한편 125 I-concanavalin A표지에 의해 전기영동성에 나타난 대표적인 당단백질은 160 Kd glycoprotein, 94 Kd glycoprotein, calsequestrin, intrinsic glycoprotein의 4종이었다. 이 가운데 94 Kd glycoprotein은 94 Kd glucose-regulated protein으로 추정되며, 본 연구를 통해 근소포체에서도 특히 T-tubule에 다량으로 존재함이 밝혀졌다.

• 공업화학
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• 제24권1호
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• pp.62-66
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• 2013

본 연구는 당근에서 추출한 당근당단백질(carrot glycoprotein, 이하 CG라 명함)의 물리화학적인 특성을 조사하기위하여 수행되었다. 천연 식물성 원료인 당근에서 CG를 제조하여 물리화학적인 특성을 분석하였다. 영양성분 조성을 분석한 결과 CG는 당단백질로서 2.35%의 탄수화물과 94.2%의 단백질로 구성되어있는 것으로 나타났다. 아미노산 조성분석 결과 CG는 콜라겐 펩타이드의 특징인 hydroxyproline과 glycine은 소량 검출되었으며, 포도당과 지방 대사에 관여하는 glutamicacid와 asparticacid가 높게 검출되었다. 또한 열량 분석결과 100 g의 CG는 342.1 kcal의 열량을 지니고 있는 것으로 나타났다. CG의 분자량 분석 결과에서는 594 Da 이하의 평균분자량 분포를 나타내는 특성을 가지고 있는 것을 알 수 있었다.

• 한국식품과학회지
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• 제41권1호
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• pp.93-99
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• 2009

꾸지뽕 당단백질이 간의 조직에 존재하는 항산화계 해독효소의 활성을 증가시켜서 $CCl_4$로 유도된 간독성화 과정에서 생성된 ROS에 의해 야기되는 산화적 스트레스를 억제하는 scavenger로서 기능을 가지고 있는 것으로 분석된다. 또한 혈청 중 LDH 활성증가는 간 및 기타조직의 질환 및 악성 종양 등에서 나타나는 소견으로 LDH를 내포한 조직이 파괴될 때 혈액으로 흘러나와 혈중 LDH가 상승하며, 혈액 중 지질과산화 반응은 생체조직막의 다가불포화지방산 유리기에 의해 산화적 분해를 일으키는 지표로 사용되는 TBARS의 수치, DNA 염기의 deamination 등을 유도함으로써, 유전자의 돌연변이(mutagenesis)로 인한 세포독성을 일으키는 NO 등의 수치가 유의적인 수준으로 억제될 뿐만 아니라, 염증 매개시 단백질인 NF-kB(p50)을 억제함으로써 $CCl_4$에 의한 간독성 과정에서 촉진된 염증 신호전달기전을 억제할 수 있었다. 따라서 꾸지뽕 당단백질은 탁월한 천연 항산화제로서 간의 독성 및 염증 반응을 억제하는 것으로 실험결과 분석된다.

• Journal of Plant Biology
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• 제36권2호
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• pp.127-132
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• 1993

Self-incompatibility in Brassica campestris is controlled by multi-allele system in a single genetic locus, the S locus, and it is elucidated that S-glycoproteins are S gene products. In this experiments, we examined the genetic mode(pollen tube behavior and segregation of S-glycoprotein), characteristic of S-glycoproteins and DNA constitution within nuclear genome on S gene family that unexplained by single locus model, and investigated the segregation pattern of S-glycoproteins in bred F1 generation. By diallel cross among the 15 plants within one family the existence of three types of homozygotes and three types of heterozygotes were observed, and segregation of S-allele could not explained by single locus model. From the results of IEF-immunoblot analysis for non-segregated individual plant, the segregation pattern of S specific bands was corresponded with results of diallel cross except with one case(SaSa genotype). The molecular weight of 6 different S-genotype varied in near by 50 kD, and each genotype expressed with 2 or 3 bands. Specific bands in SaSa, SbSb, ScSc has almost similar molecular weight between them. Southern analysis of genomic DNA probed with S-glycoprotein cDNA for 6 different genotypes revealed that there are clear difference in polymorphism, multiple bands of hybridization, when restriction enzymes of EcoR I were used. It could be assumed that there are several sequences related to the S-glycoprotein structural genes within their nuclear genome. Therefore, we suggested the possibilities that S-allele system could be controlled by multi-locus, that dominance-recessive interactions could be explained by modifier gene or supressor gene based on the results of abnormal segregation of S-glycoprotein in bred F1. The F2 analyses are progressing in now.

• Journal of Veterinary Science
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• 제22권5호
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• pp.61.1-61.13
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• 2021

Background: Hepatocellular carcinoma is the most common primary hepatic malignancy in humans and dogs. Several differentially expressed molecules have been studied and reported in human hepatocellular carcinoma and non-neoplastic liver lesions. However, studies on the features of canine hepatocellular carcinoma are limited, especially related to the differential characteristics of neoplastic and non-neoplastic lesions. Objectives: The study's objective was 1) to examine and evaluate the expression of arginase-1, P-glycoprotein, and cytokeratin 19 in canine liver tissues and 2) to investigate the differential features of hepatocellular carcinomas, liver tissue with non-neoplastic lesions, and paracancerous liver tissues in dogs. Methods: The expression levels of three markers underwent immunohistochemical analysis in 40 non-neoplastic liver tissues, 32 hepatocellular carcinoma tissues, and 11 paracancerous liver tissues. Scoring of each marker was performed semi-quantitatively. Results: Arginase-1 and P-glycoprotein were significantly downregulated in hepatocellular carcinoma, compared with hepatic tissues with non-neoplastic diseases (p < 0.001). Expression levels of arginase-1 and P-glycoprotein were also significantly lower in hepatocellular carcinoma than in paracancerous liver tissues (arginase-1, p = 0.0195; P-glycoprotein, p = 0.047). Few cytokeratin 19-positive hepatocytes were detected and only in one hepatocellular carcinoma and one cirrhotic liver sample. Conclusions: The results of this study suggest that downregulation of arginase-1 and P-glycoprotein is a feature of canine hepatocellular carcinoma; thus, those markers are potential candidates for use in differentiating hepatocellular carcinomas from non-neoplastic liver lesions in dogs.

• 한국어병학회지
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• 제33권2호
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• pp.103-109
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• 2020

In order to use nervous necrosis virus (NNV) virus-like particles (VLPs) as a delivery tool for heterologous antigens or plasmids, we attempted to produce red-spotted grouper nervous necrosis virus (RGNNV) VLPs displaying a partial region of viral hemorrhagic septicemia virus (VHSV) glycoprotein at the surface and VLPs that are harboring DNA vaccine plasmids within the VLP. A peptide encoding 105 amino acids of VHSV glycoprotein was genetically inserted in the loop region of NNV capsid gene, and VLPs expressing the partial part of VHSV glycoprotein were successfully produced. However, in the transmission electron microscope analysis, the shape and size of the partial VHSV glycoprotein-expressing NNV VLPs were irregular and variable, respectively, indicating that the normal assembly of capsid proteins was inhibited by the relatively long foreign peptide (105 aa) on the loop region. To encapsulate by simultaneous transformation with both NNV capsid gene expressing plasmids and DNA vaccine plasmids (having an eGFP expressing cassette under the CMV promoter), NNV VLPs containing plasmids were produced. The encapsulation of plasmids in the NNV VLPs was demonstrated by PCR and cells exposed to the VLPs encapsulating DNA vaccine plasmids showed fluorescence. These results suggest that the encapsulation of plasmids in NNV VLPs can be done with a simple one-step process, excluding the process of disassembly-reassembly of VLPs, and NNV VLPs can be used as a delivery tool for DNA vaccine vectors.

• 대한수의학회지
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• 제36권3호
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• pp.627-633
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• 1996

To analyze the genomic diversity of transmissible gastroenteritis virus (TGEV), the N-terminal half of the spike (S) glycoprotein gene and nonstructural protein gene (open reading frames 3 and 3-1) were amplified by reverse transcriptase reaction and polymerase chain reaction (RT-PCR), and analyzed using restriction fragment length polymorphism (RFLP) patterns of the amplified DNA. In this study, TGEV Miller (M6) and Purdue (P115) strains were used as reference strains, and two vaccine strains (MSV and STC3) and four Korea isolates (P44, VRI-WP, VRI-41, and VRI-48) were analyzed. All TGEV strains were amplified with three TGEV primer pairs. Although there was some exception in RFLP analysis, this method differentiated TGEV strains into following groups : Miller group (M6 and MSV), Purdue group (PUS, STC3, P44, VRI-WP, VRI-41, and VRI-48). Using Sau3AI and SspI, VRI-48 was differentiated from the Miller and Purdue type viruses. The RT/PCR in conjuction with RFLP analysis was a rapid and valuable tool for differentiating several strains of TGEV. This study revealed the occurences of distinct difference in genome of TGEV strains.

• 한국식품과학회지
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• 제37권4호
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• pp.624-630
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• 2005

본 연구는 천연물에서의 생리활성물질 동정의 일환으로 Ficus Carica Linnoeus(FCL)로부터 60kDa의 FCL glycoprotein(무화과 당단백질)을 추출한 후, 무화과 당단백질의 첨가에 따른 과산화 지질 라디칼 억제능력 및 생질의 혈장 콜레스테롤 수준과 간 해독효소활성의 개선효과를 평가하였다. In vitro에서 리놀렌산 자동산화반응에 기초한 과산화 지질 라디칼 억제능력을 실험한 결과, 무화과 당단백질을 섭취시킨 농도가 증가함에 따라 과산화 지질 라디칼 억제율은 증가하였다. 한편, 생쥐에게 14일 동안 무화과 당단백질을 50 및 100mg/kg 농도로 섭취시킨 그룹과 무화과 당단백질을 섭취시킨 후 Triton WR-1339를 투여한 생쥐 그룹에서 혈액 및 간조직을 채취하여 혈장 콜레스테롤의 수준변화 및 해독효소의 활성을 측정한 결과, 100mg/kg 농도로 무화과 단백질을 섭취시킨 그룹에서 TC와 LDL-콜레스테롤의 수준은 유의적 감소효과가 나타났다(p<0.05). 또한 Triton WR-1339에 의해 고지혈증이 유발된 생쥐그룹에서도 TC와 LDL-콜레스테롤 수준이 유의적 억제능력을 보였는데, 특히 100mg/kg 농도에서 그 개선 효과는 더욱 분명하였다(p<0.01). 간의 해독효소 중 항산화 기능을 하는 SOD, CAT 그리고 GPx의 활성은 모두 증가되었는데, 특히 GPx는 100mg/kg의 농도에서 유의성을 보이며 증가하였다(p<0.01). 따라서 이러한 결과를 종합하면, 무화과 당단백질이 해득효소의 활성을 증가시킴으로써 체내의 ROS의 수준을 감소시키고, 이러한 항산화 효과가 혈중 콜레스테롤의 수준을 감소시키는데 영향을 미친 것으로 사료된다.