• 생명과학회지
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• 제24권4호
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• pp.370-376
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• 2014

본 연구에서는 벼메뚜기 에탄올 추출물의 항염증 효능을 분석하기 위해 LPS로 염증 유도된 RAW 264.7 세포를 이용하였다. OCE의 항염증 효능을 확인 하기 위해서, 염증 유도된 RAW 264.7 세포에 대해 OCE 농도 의존적으로 염증성 사이토카인인 TNF-${\alpha}$와 IL-6의 유전자발현 및 단백질 생성을 감소시킴을 real-time PCR과 ELISA로 확인하였다. 또한, NF-${\kappa}B$ p65의 핵으로 이동이 차단됨을 면역형광염색으로 확인하였으며, iNOS와 COX-2 단백질 발현을 감소시키는 것을 Western blot 분석으로 확인하였다. 이상의 연구결과를 통해 벼메뚜기는 염증에 의한 NF-${\kappa}B$ p65의 활성과 TNF-${\alpha}$와 IL-6의 생성과 iNOS 및 COX-2의 발현을 억제하는 항염증 효능을 갖고 있는 것을 확인하였다.

• 한국가금학회지
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• 제34권2호
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• pp.151-156
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• 2007

Calcium Sensing Recepter(CaSR) 유전자는 세포의 밖에서 칼슘의 항상성을 조절하는 역할을 담당하며, 부갑상선 호르몬의 분비를 조절하고 비뇨기에서 칼슘의 흡수를 담당하는 것으로 알려져 있다. CaSR 유전다의 체내 칼슘 농도 조절 기작은 동물의 여러 경제 형질에 영향을 미칠 것으로 추정되며 경제 형질 개량에 강력한 후보 유전자로서 가능성이 잠재되어 있다. 따라서 본 연구는 닭의 CaSR 유전자 내 염기 변이 지역을 탐색하고 이를 통해 검출된 변이 지역과 경제 형질간의 연관성을 규명하고자 실시하였다. 한국 재래닭의 AS 유전자형이 65%로 가장 높은 출현 빈도를 보였으며, SS 유전자형이 23%, AA 유전자형이 12%로 나타났다. 반면, 레그혼 품종에서는 AS 유전자형이 92%로 높은 빈도를 나타냈으며, AA 유전자형이 0.8%의 빈도를 보였다. 그리고 레그혼 품종에서 SS 유전자형은 발견되지 않았다. A963S 유전자형과 경제 형질간의 연관성 분석 결과를 레그혼 집단에서 분석된 결과에 따르면 시산일령에서 유전자형과의 유의한 연관성이 검출되었다. $AA(137.6{\pm}2.63)$ 유전자형은 $AS(143.0{\pm}1.60)$ 유전자형보다 빠른 시산일령을 가진 것으로 나타났다. 한국 재래닭 집단에서 분석된 결과에 따르면 시산일령과 난중에서 유전자형과의 유의한 연관성이 검출되었다. 시산일령의 경우 $AA(151.0{\pm}2.87)$와 $AS(152.6{\pm}1.21)$ 유전자형은 $SS(159.43{\pm}2.03)$ 유전자형보다 빠른 것으로 나타났으며, 난중은 $SS(50.4{\pm}0.81)$유전자형이 $AA(47.5{\pm}1.15)$와 $AS(47.85{\pm}0.49)$유전자형보다 무거운 것으로 나타났다. 본 연구의 결과 A963S 지역의 변이가 칼슘 농도의 조절에 영향을 미치고 이에 따른 프로게스테론이나 성장 호르몬 등의 분비에 영향을 미쳐 결과적으로 시산일령과의 유의적인 연관성이 나타난 것으로 추정된다. 대립 유전자 A를 분자 생물학적 마커로 이용하여 경제 형질중 산란일령을 앞당기는데 큰 기여를 할 수 있을 것으로 기대된다.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2017년도 9th Asian Crop Science Association conference
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• pp.194-194
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• 2017

Camelina (Camelina sativa L.) is a potential bio-energy crop that has short life cycle about 90 days and contains high amount of unsaturated fatty acid which is adequate to bio-diesel production. Enhancing environmental stress tolerance is a main issue to increase not only crop productivity but also big mass production. CsRCI2s (Rare Cold Inducible 2) are cold and salt stress related protein that localized at plasma membrane (PM) and assume to be membrane potential regulation factor. These proteins can be divide into C-terminal tail (CsRCI2D/E/F/G) or no-tail group (CsRCI2A/B/C/H). However, function of CsRCI2s are less understood. In this study, physiological responses and functional characterization of CsRCI2s of Camelina under salt stress were analyzed. Full-length CsRCI2s (A/B/E/F) and CsPIP2;1 sequences were confirmed from Camelina genome browser. Physiological investigations were carried out using one- or four-week-old Camelina under NaCl stress with dose and time dependent manner. Transcriptional changes of CsRCI2A/B/E/F and CsPIP2;1 were determined using qRT-PCR in one-week-old Camelina seedlings treated with NaCl. Translational changes of CsRCI2E and CsPIP2;1 were confirmed with western-blot using the antibodies. Water transport activity and membrane potential measurement were observed by cRNA injected Xenopus laevis oocyte. As results, root growth rate and physiological parameters such as stomatal conductance, chlorophyll fluorescence, and electrolyte leakage showed significant inhibition in 100 and 150 mM NaCl. Transcriptional level of CsPIP2;1 did not changed but CsRCI2s were significantly increased by NaCl concentration, however, no-tail type CsRCI2A and CsRCI2B increased earlier than tail type CsRCI2E and CsRCI2F. Translational changes of CsPIP2;1 was constitutively maintained under NaCl stress. But, accumulation of CsRCI2E significantly increased by NaCl stress. CsPIP2;1 and CsRCI2A/B/E/F co-expressed Xenopus laevis oocyte showed decreased water transport activity as 61.84, 60.30, 62.91 and 76.51 % at CsRCI2A, CsRCI2B, CsRCI2E and CsRCI2F co-expression when compare with single expression of CsPIP2;1, respectively. Moreover, oocyte membrane potential was significantly hyperpolarized by co-expression of CsRCI2s. However, higher hyperpolarized level was observed in tail-type CsRCI2E and CsRCI2F than others, especially, CsRCI2E showed highest level. It means transport of $Na^+$ ion into cell is negatively regulated by expression of CsRCI2s, and, function of C-terminal tail is might be related with $Na^+$ ion influx. In conclusion, accumulation of NaCl-induced CsRCI2 proteins are related with $Na^+$ ion exclusion and prevent water loss by CsPIP2;1 under NaCl stress.

• Journal of Animal Science and Technology
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• 제45권6호
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• pp.933-938
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• 2003

본 연구는 한우 mt DNA D-loop 영역의 염기변이 다형성과 경제형질간의 관련성을 분석하기 위하여 수행하였다. 한우의 mtDNA D-loop 영역에서 단일염기의 치환 의해 총 25개의 polymorphic site가 확인되었다. 그중 주요 Polymorphic site의 염기변이 빈도는 169, 16042, 16093, 16119, 16255 및 16302번째 위치에서 0.891, 0.117, 0.109, 0.182, 0.197 및 0.117로 검출되었다. 169 및 16119번째 위치에서의 염기치환에 의한 MS의 효과는 -1.08(p〈0.05), 1.29(p〈0.01)로 나타났으며, 169 및 16042번째 위치에서의 염기치환에 의한 BF의 효과는 -0.31(p〈0.01)과 0.34(p〈0.01)로 나타났다. 본 연구에서 검출한 한우 mtDNA내 D-loop 영역의 염기서열 변이 빈도 등은 한우집단의 유전적 변이성 추정과 좀 더 다양한 경제형질과의 관련성 분석은 물론 모계유전 양상 분석을 통한 한우의 형성과정과 타 품종과의 계통분류적 상호 관계 등의 분석에 유용하게 활용할 수 있을 것으로 기대된다.

• 동의생리병리학회지
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• 제18권3호
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• pp.868-873
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• 2004

Renal dysfunction could be developed as the secondary disease of liver cirrhosis. Delayed or suppresed lipid peroxidation by the treatment with physiological active substances could be explained as the antioxidative and protective effect in tissue damage. In this study, we investigated an antioxidative effect and renal function improvement of Hovenia dulcis in liver fibrosis(cirrhosis) induced rats. The female Sprague-Dawley rats (180∼210 g) were divided into 3 groups (Normal, AC: CCl₄ mixture treated group, AC-HV: CCl₄ mixture+ Hovenia dulcis treated group) and renal damage was developed by CCl₄ mixture administration in 4 weeks (0.8 ㎖/rat). The tissue of kidney and liver and sera were used for quantitative measurement of enzyme activity, MDA and Hyp. The histological change and gene expression of collagen α1(III) mRNA and a1(IV) mRNA were observed by Masson's trichrome staining and RT-PCR. As a result, the clinical biochemical parameters of liver function (AST and ALT) in sera of AC-HV group showed significantly 46.4% and 104.8% lower (p<0.005), and the level of ALP and BUN as the parameter of protein urine and azotemia showed 17.8 % and 25.8 % lower than in AC group. In AC-HV group, the concentration of MDA in kidney and liver was decreased significantly 15.8% and 21.3% when compared with AC group (p<0.01 -0.005). The content of Hyp in kidney of AC-HV group is merely higher than in AC group, in contrast to liver tissue. The expression of collagen α1(III) mRNA and collagen α1(IV) mRNA was decreased in AC, but both of collagen mRNA in normal and AC-HV group expressed fast similar. More massive lipid droplets, thicker collagen fiber bundles in portal triads and more formation of portal central septum were observed in the liver of AC group than in AC-HV group. In conclusion, CCl₄ mixture intoxication could be developed not only liver fibrosis(cirrhosis) but also renal dysfunction by the massive lipid peroxidation and suppression of interstitial collagen and basement membrane collagen synthesis. And the water extract of Hovenia dulcis may be possessed the antioxidative and protective effect and improvement of kidney function in renal dysfunction induced rats.

• Asian-Australasian Journal of Animal Sciences
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• 제21권4호
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• pp.489-493
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• 2008

In 2004, Jorgensen and coworkers proposed the MUC4 gene as a candidate gene of enterotoxigenic Escherichia coli (ETEC) F4ab/ac receptor in piglets and a mutation of $G{\rightarrow}C$ in intron 7 of MUC4 was identified to be associated with the ETEC F4ab/ac adhesion phenotypes. In this study, we used 310 piglets of three breeds (Landrace, Large White and Chinese Songliao Black) to analyze the relationship between this mutation and the F4ab/ac adhesion phenotype. The results show that the genotypes at this site and the ETEC F4ab/ac adhesion phenotypes were not completely consistent, although they are very strongly associated. Among the individuals with genotype CC, which was identified as a resistant genotype to F4ab/ac adhesion, only 72.1% (124/172) were non-adhesive to ETEC F4ab and 77.9% (134/172) were non-adhesive to ETEC F4ac infections. This suggests that this mutation may not be the causative mutation for ETEC F4ab/ac adhesion, rather, the actual causative mutation may be in another gene closely linked to MUC4, or at aother site within the MUC4 gene. Our results also suggest that the receptors of F4ab and F4ac may be determined by two different but closely linked loci. In order to screen other genes related to F4ab/ac adhesion in piglets, the mRNA profiles from six full sib piglets, of which three were adhesive to ETEC F4ab/ac and three non-adhesive, were analyzed by suppression subtractive hybridization (SSH). One up-regulated gene, Ep-CAM, was selected for further analysis based on its role in the intestinal epithelial cells adhesion. Using real-time RT-PCR, we found that the Ep-CAM gene was significantly up-regulated in the piglets adhesive to F4ab/ac. It was mapped to SSC3q11-q14 by radiation hybrid mapping.

• 한국식품과학회지
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• 제52권5호
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• pp.441-449
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• 2020

산달래 열수추출물의 생리활성을 비교하기 위하여 산달래를 전체(WAE), 비늘줄기(BAE), 잎(LAE)으로 분리하여 추출한 후 항산화 활성, 총 폴리페놀 함량, 지방전구세포 분화 억제 효과를 확인하였다. BAE에 비해 WAE와 LAE는 유의적으로 높은 라디칼 소거능, 환원력과 총 폴리페놀 함량을 보였다. 지방전구세포 분화 억제능 역시 BAE에 비해 WAE와 LAE가 유의적으로 높은 것을 확인할 수 있었다. 이를 통해 산달래 전체 중 가장 많은 부분을 차지하는 잎에 유효성분이 있을 것으로 판단되어, LAE의 항비만 효능을 알아보았다. LAE는 농도의존적으로 지방전구세포의 분화를 감소시켰으며 이는 독성에 의한 3T3-L1 세포 사멸에 의한 것이 아님을 세포생존율 측정을 통해 확인하였다. LAE의 지방전구세포 분화 억제능은 adipogenesis 관련 전사인자인 CCAAT/enhancer-binding protein beta (C/EBPβ), peroxisome proliferator-activated receptor gamma (PPARγ), C/EBPα 유전자 발현의 억제와 관련이 있는 것으로 확인하였다. 또한 lipogenesis에 필수적인 효소 stearoyl-CoA desaturase 1 (SCD1)의 유전자 발현을 저해하였다. 이를 통해 산달래 추출물 중 LAE는 adipogenic 전사인자와 SCD1 유전자 조절을 통해 지방전구세포 분화를 억제함을 밝혔고 항비만 기능성 물질로서의 활용 가능성을 확인하였다. 따라서 산달래가 항비만 효과가 있는 식품임을 입증하고 건강기능성식품 소재로서 상품화될 가능성을 제시하고자 한다.

• BMB Reports
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• 제37권3호
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• pp.282-291
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• 2004

Phytases catalyze the release of phosphate from phytic acid. Phytase-producing microorganisms were selected by culturing the soil extracts on agar plates containing phytic acid. Two hundred colonies that exhibited potential phytase activity were selected for further study. The colony showing the highest phytase activity was identified as Aspergillus niger and designated strain 113. The phytase gene from A. niger 113 (phyI1) was isolated, cloned, and characterized. The nucleotide and deduced amino acid sequence identity between phyI1 and phyA from NRRL3135 were 90% and 98%, respectively. The identity between phyI1 and phyA from SK-57 was 89% and 96%. A synthetic phytase gene, phyI1s, was synthesized by successive PCR and transformed into the yeast expression vector carrying a signal peptide that was designed and synthesized using P. pastoris biased codon. For the phytase expression and secretion, the construct was integrated into the genome of P. pastoris by homologous recombination. Over-expressing strains were selected and fermented. It was discovered that ~4.2 g phytase could be purified from one liter of culture fluid. The activity of the resulting phytase was 9.5 U/mg. Due to the heavy glycosylation, the expressed phytase varied in size (120, 95, 85, and 64 kDa), but could be deglycosylated to a homogeneous 64 kDa species. An enzymatic kinetics analysis showed that the phytase had two pH optima (pH 2.0 and pH 5.0) and an optimum temperature of $60^{\circ}C$.

• 한국임상약학회지
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• 제21권2호
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• pp.122-130
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• 2011

Objective: Although recombinant human erythropoietin (rhEPO) has revolutionized the treatment of anemia in chronic kidney disease (CKD) receiving hemodialysis (HD) with no need of blood transfusion, some patients have a blunted or appear to be resistant to rhEPO. There is a controversy in the causes of rhEPO resistance in maintenance HD patients with anemia. This study is to examine current anemia treatment outcomes and the factors influencing the rhEPO responsiveness in HD patient with CKD. Methods: The clinical parameters or factors relating to erythrompoietin treatment outcomes and erythropoietin responsiveness were collected from the HD patients in two large dialysis centers for three months. The collected paramenters included serum iron, total iron biding capacity (TIBC), transferrin saturation rate, ferritin, albumin, intact PTH, C-reactive protein (CRP), nPCR and medications such as an angiotensin converting enzyme inhbitor, an angiotension II receptor blocker and an HMG-CoA reductase inhibitor (HMG-CoA RI). The data were analyzed to examine the degree of acheiveing the anemia treatment goal and factors relating to ERI. Results: Among total 111 patients, 42 (42.3%) and 47 (37.8%) patients achieved the target Hct and Hb based on the Health Insurance Review and Assessment Services (HIRA) reimbursement criteria. In the higher ERI group (upper quartile), the patients had higher CRP levels (0.5 mg/dl) (p=0.0096), and lower TIBC score (<$240{\mu}g/dl$) (p=0.0027), and less patients were taking HMG-CoA RI (p=0.0019). Male patients (p=0.0204), patients with high TIBC score ($R^2$=0.084, p=0.0021) and patients taking HMG-CoA RI (p=0.0052) required to administer less dose of rhEPO meaning higher erythropoietin responsiveness. Conclusion: Less than 50% of CKD patients were achieving the goals of anemia by erythropoietin administration in large hospitals in Korea even though the goals were lower than those of NKF-K/DOQI practice guideline. The factors influencing ERI were sex, TIBC and HMG-CoA RI administration status, and neither an ACEI nor an ARB did not influence ERI.

• BMB Reports
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• 제39권2호
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• pp.158-166
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• 2006

In many organisms, trehalose acts as protective metabolite against harsh environmental stresses, such as freezing, drought, nutrient starvation, heat and salt. Herein a cDNA (designated as GbTPS, GenBank Accession Number AY884150) encoding a trehalose-6-phosphate synthase homologue was isolated and characterized from the living fossil plant, Ginkgo biloba, which is highly tolerant to drought and cold. GbTPS encoded an 868-amino-acid polypeptide with a predicted isoelectric point of 5.83 and molecular mass of 97.9 kD. Amino acid sequence alignment revealed that GbTPS shared high identity with class II trehalose-6-phosphate synthase homologues (67% identical to AtTPS7), but had only 17% and 23% of identity with OstA from Escherichia coli and ScTPS1 from S. cerevisiae, respectively. DNA gel blot analysis indicated that GbTPS belonged to a small multi-gene family. The expression analysis by RT-PCR showed that GbTPS expressed in a tissue-specific manner in G biloba and might involve in leaf development. GbTPS was also found to be induced by a variety of stresses including cold, salt, drought and mannitol.