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Benzoic Acid Enhances Embryo Implantation through LIF-Dependent Expression of Integrin αVβ3 and αVβ5
( Hee-jung Choi ),( Tae-wook Chung ),( Mi-ju Park ),( Hyung Sik Kim ),( Sooseong You ),( Myeong Soo Lee ),( Bo Sun Joo ),( Kyu Sup Lee ),( Keuk-jun Kim ),( Gabbine Wee ),( Choong-yong Kim ),( Cheorl-h 한국미생물 · 생명공학회 2017 Journal of microbiology and biotechnology Vol.27 No.4
Embryo implantation is the crucial step for a successful pregnancy. Diverse factors, including adhesion molecules, growth factors, and cytokines are important for embryo implantation through improving endometrial receptivity. Benzoic acid (BA), a component of various plants, has been shown to have antifungal and antioxidant effects. However, the effect of BA on embryo implantation remains unknown. Here, we showed the contribution of BA for the enhancement of endometrial receptivity through the leukemia inhibitory factor (LIF)-dependent increase of integrin αV, β3, and β5 expression. Furthermore, in vivo study using a mifepristone-induced implantation failure model showed that BA definitely improves the numbers of implantation embryos. Taken together, we suggest that BA has a novel function for embryo implantation through the up-regulation of LIF-mediated integrins, and may be a candidate for therapeutic medicine to increase the pregnancy rate.
김민환,Jung Woon Jung,Jeong Hyeon Jin,Lee Kyongkyu,Kil Hee Seup,Chung Wee Sup,Nam Kyung Rok,Lee Yong Jin,Lee Kyo Chul,Lim Sang Moo,Chi Dae Yoon 대한화학회 2022 Bulletin of the Korean Chemical Society Vol.43 No.6
We investigated the off-target binding of amyloid-beta (Aβ) target [18F] florapronol ([18F]FC119S) using postmortem Alzheimer’s disease (AD) brain tissue, compared with a known Aβ target imaging agent, [125I]TZDM and tau targeting [125I]MK as positive and negative controls, respectively. Off-target binding of monoamine oxidase-A and -B (MAO-A and -B) was screened for FC119S and Pittsburgh compound B (PiB). Autoradiography (ARG) was performed to screen the Aβ-binding potential using human AD postmortem brain tissue sections. Colocalization was quantitatively analyzed by using image analysis software. Pathological analysis was performed for screening of specific binding of amyloid-beta and phospho-tau. Amyloid-beta targeting [18F]FC119S and [125I]TZDM tracers were showed a similar binding pattern in ARG, but [125I] MK was showed a different binding patterns. In the blocking experiment, [18F] FC119S binding was effectively blocked by a cold TZDM compound. FC119S and PiB were not showed specific binding with MAO-A and MAO-B. The autoradiographic binding pattern was positively correlated with the Aβ expression.
형광 물질 직접 표지를 위한 Poly Lysine 도입 Lym-1 단일사슬 항체의 제조 및 면역반응성 평가
정재호 ( Jae Ho Jung ),최태현 ( Tae Hyun Choi ),우광선 ( Kwang Sun Woo ),정위섭 ( Wee Sup Chung ),강주현 ( Joo Hyun Kang ),정수영 ( Su Young Jeong ),최창운 ( Chang Woon Choi ),임상무 ( Sang Moo Lim ),천기정 ( Gi Jeong Cheon ) 대한핵의학회 2009 핵의학 분자영상 Vol.43 No.5
목적: 작은 크기의 재조합 단일사슬 항체는 빠른 혈중 제거율과 종양의 항체 집적율이 증가되는 등의 장점을 가지고 있다. 반면에 항체의 작은 크기는 방사성 또는 형광물질의 표지를 위한 킬레이터 결합에 중요한 아미노산 그룹의 감소를 의미하기도 한다. 본 연구에서는 단일사슬 lym-1 염기서열 C-말단에 lysine 아미노산 태그를 삽입하여 형광물질의 직접표지 및 그 표지수율 증가를 확인하고자 하였다. 대상 및 방법: 대장균 pET-22b (+) 벡터에 재조합 된 lysine 삽입 단일사슬 lym-1유전자는 대장균 BL21 (DE3)에 형질전환하여 발현하였다. 생산된 lysine lym-1 항체는 Ni-NTA 컬럽과 분자량 컬럼을 사용해 정제하였고. 단백질 전기영동과 western blot을 통해 확인하였다. lysine lym-1 항체에 방사성 동위원소인 I-124, I-125, I-131 과 Tc-99m를 표지하여 그 수율을 확인하였으며 유세포계측기를 사용해 형광물질인 FITC가 직접표지된 라이신 lym-1 항체의 면역반응성을 사람의 버킷 림프종 세포주인 Raji 세포주에서 면역반응성을 확인하였다. 결과: Lysine 도입 단일사슬 lym-1 항체는 두 과정의 정제를 통하여 획득하였으며 그 크기는 약 48 KDa이었고, 방사성동위원소인 I-124, I-125, I-131과 Tc-99m의 표지수율은 각각 >99%, >99%, >95%, >99%로 확인되었다. 유세포계측을 통한 lysine 도입 단일사슬 lym-1항체의 면역반응성은 기존의 단일사슬 lym-1항체와 유사함을 확인하였다. 결론: 재조합 lym-1 항체에 형광물질을 직접 표지하기 위한 lysine 아미노산의 도입은 항체의 면역반응성 감소를 최소화 시키면서 직접표지 수율을 증가시킬 수 있는 유용한 방법임을 확인하였다. Purpose: Small size of recombinant scFv antibody has many advantages such as rapid blood clearances and improved targeting antibodies to tumor region. On the other hand owing to small size, number of amino group is insufficient in conjugation with chelator and fluorescence labeling. This study is to introduce poly lysine tag to the C-terminal end of scFv lym-1 sequence for fluorescence chelator conjugation. Materials and Methods: Poly lysine scFv lym-1 gene, cloned into pET-22b (+) vector, was expressed in E. coli BL21 (DE3) strain. Antibody purification was performed with Ni-NTA column and then size exclusion column chromatography. Expression and purification levels of poly lysine tagged scFv lym-1 antibody were confirmed by western blot analysis. I-124, I-125, I-131 and Tc-99m were used for radiolabeling of purified poly lysine scFv lym-1. Flow cytometry analysis of FITC conjugated poly lysine scFv lym-1 was performed for confirmation of immunoreactivity of human Burkitt`s lymphoma cells. Results: Poly lysine scFv lym-1 antibody was purified through two steps and identified as molecular weight of 48 KDa. Radiolabeling yields of I-124, I-125, I-131 and Tc-99m into poly lysine scFv lym-1 were >99%, >99%, >95% and >99%, respectively. Flow cytometry analysis of poly lysine scFv and scFv lym-1 was showed similar immunoreactivity to human Burkitt`s lymphoma cells. Conclusion: Poly lysine tag was useful for the sufficient number of amino groups to scFv lym-1 antibody for chelator conjugation with minimizing loss of immunoreactivity. (Nucl Med Mol Imaging 2009;43(5):487-494)
유승화 ( Seung Hwa Yoo ),이기섭 ( Ki Sup Lee ),김화정 ( Hwa Jung Kim ),허위행 ( Wee Haeng Hur ),김진한 ( Jin Han Kim ),박종화 ( Chong Hwa Park ) 한국하천호수학회 2014 생태와 환경 Vol.47 No.4
This study was conducted to make distribution model of the Red-crowned Crane and the Whitenaped Crane according to the anthropogenic and natural factors affecting distribution of crane in Cheorwon, Korea. It was investigated that the impact power and its range of the indirect anthropogenic influence to feeding flock density in cranes from the road, residential area, military facilities, civilian control zone (CCZ), greenhouse and natural influence such as roosting site and available feeding area. Available feeding area is the most important factor for the crane`s feeding site selection. The feeding flock density of the cranes near the residential area was lower than that of area far from the area, and tended to increase within 2.5 km distance. The increasing tendencies of feeding flock density from military facilities and high traffic volume road were similar, but the density in military facilities increased within 800 m, and the density from high traffic volume road increased within 2 km. These results suggested that residential area, military facilities and the road with high traffic volume had significant effect on foraging densities to the certain range. As the distance from the road with low traffic volume and roosting site increased, feeding flock density tended to decrease. The density of Red-crowned crane and White-naped crane inside the CCZ were respectively higher than those of outside the CCZ, especially for the Red-crowned crane. As a result, density of Red crowned cranes inside the CCZ was 5.2 times higher than that of outside, while that of white-naped cranes was 2.2 times bigger. If the density of greenhouse is lower than 40 km-2, crane`s feeding flock density in the low greenhouses density area was higher than that of high greenhouses density area. However, there was no difference in the feeding flock density if the density of the green houses is higher than 40 km-2. The model for the Red-crowned Crane was related with available feeding area, distance from residential area, civilian control zone and distance from high traffic road. The model of the White-naped Crane was related with available feeding area, distance from roosting site and distance from lake. Finally, the estimated feeding flock density of cranes significantly correlated with density model according to the natural and anthropogenic factors.
기후요인에 의한 철원지역 두루미류 월동개체수 변화 -MODIS 위성영상을 이용한 눈덮임 범위와 지속기간의 영향-
유승화 ( Seung Hwa Yoo ),이기섭 ( Ki Sup Lee ),정화영 ( Hwa Young Jung ),김화정 ( Hwa Jung Kim ),허위행 ( Wee Haeng Hur ),김진한 ( Jin Han Kim ),박종화 ( Chong Hwa Park ) 한국하천호수학회(구 한국육수학회) 2015 생태와 환경 Vol.48 No.3
In this study, we hypothesized that the size of wintering crane population would change due to the climate factors. We assumed that wintering population size would differ by climate values in January, which is the coldest period in year. Especially, White-naped cranes were able to choose wintering site between Cheorwon and other alternative place where snow coverage had low influence, differing from Red crowned cranes. For this reason, we predicted the population size of White-naped cranes would fluctuate according to the extent of snow coverage in Cheorwon. Therefore we used snow coverage data based on MODIS and climate data from KMA (Korea Meteorological Administration) that are generally used. We analyzed the crane``s population size in Cheorwon in January from 2002 to 2014. The temperature in the Cheorwon increased from 2002 to wintering period in 2007~ 2008 and went down, showing the lowest temperature in 2011~ 2012. With this phenomenon, warmth index showed the similar pattern with temperature. Amount of newly accumulated snow (the amount of snow that fallen from 0:01 am to 11:29 pm in a day) was low after 2002, but rapidly increased in 2010~ 2011 and 2011~ 2012. The area of snow coverage rapidly declined from 2002 to 2005~ 2006 but suddenly expanded in wintering period in 2009~ 2010 and 2010~ 2011. Wintering population size of the White-naped cranes decreased as snow coverage area increased in January and the highest correlation was found between them, compared to the other climatic factors. However, the number of individuals of Red crowned cranes had little relationship with general climate factors including snow cover range. Therefore it seems that population size of the Red crowned crane varied by factors related with habitat selection such as secure roosting site and area of foraging place, not by climatic factors. In multiple regression analysis, wintering population of White-naped cranes showed significant relationship with logarithmic value of snow cover range and its period. Therefore, it suggests that the population size of the White-naped crane was affected by snow cover range n wintering period and this was because it was hard for them to find out rice grains which are their main food items, buried in snow cover. The population size variation in White-naped cranes was caused by some individuals which left Cheorwon for Izumi where snow cover had little influence on them. The wintering population in Izumi and Cheorwon had negative correlation, implying they were mutually related.
지방육종형성 동물모델에서 123I-15-(p-iodophenyl)-3-R , S-methylpentadecanoic acid ( BMIPP ) 의 생체분포와 생체영상
최창운(Chang Woon Choi),임상무(Sang Moo Lim),이태섭(Tae Sup Lee),서용섭(Yong Sup Suh),우광선,정위섭(Wee Sup Chung),임수정(Soo Jung Lim),오옥두(Ok Doo Awh) 대한핵의학회 2001 핵의학 분자영상 Vol.35 No.5
N/A Purpose: 123I-labeled fatty acids have been used in the evaluation of regional myocardial energy metabolism. This study aimed to evaluate the usefulness of 123I-BMIPP as a liposarcorna-imaging agent. Materials and Methods: We compared in vitro uptakes between liposarcoma(SW872) and glioma(9L) cell lines, and examined biodistribution and in vivo images of 123I-BMIPP in liposarcoma-bearing nude mice. Cold-BMIPP was labeled with 123I using Cu2+ as catalyst. After purification by Sep-pak, radiochemical purity was determined by TLC. We compared cellular uptake between glioma and liposarcoma after incubation of 5, 10, 15, 30, 60, 120, and 180 mins with culture medium containing I-BMIPP. The difference in biodistribution was determined between non-feeding (water only) group for 18 hr and feeding group in normal mice (n=6/group) at 0.5, 2, and 24 hr. In liposarcoma-bearing nude mice model, liposarcoma, SW872, cell lines were injected subcutaneously into the left thigh of nude mice. The biodistribution of 123I-BMIPP was evaluated at 0.5, 2, and 24 hr (n=5 / group) and in vivo image of 123I-BMIPP was obtained with gamma camera at 2 and 24 hr in liposarcorna-bearing nude mice. Results: Radiolabeling yield and radiochemical purity were 95% and above 99%, respectively. SW872 cell line showed more increased uptake than 9L with 1.5 times at 180 mins. The clearance of 'I-BMIPP in various tissues was more delayed in the non-feeding group than in the feeding group, especially at delayed time (24 hr) in normal mice, and the major excreting organ was the gastrointestinal tract. In liposarcoma-bearing nude mice, tumor/blood ratio of 123I-BMIPP was 0.94, 0.75, and 1.38 and tumor/muscle ratio was 0.66, 1.53, and 1.11 at 0.5, 2, and 24hr, respectively. 123I-BMIPP was selectively localized in liposarcoma at 24 hr image. Conclusions: These results suggest that 123I-BMIPP can be used as a liposarcoma-imaging agent. (Korean J Nucl Med 200135:324-333)
Notch1 mediates visfatin-induced FGF-2 up-regulation and endothelial angiogenesis
( Yun Hee Bae ),( Hyun Joo Park ),( Su Ryun Kim ),( Jee Young Kim ),( You Ra Kang ),( Jung Ae Kim ),( Hee Jun Wee ),( Ryoichiro Kageyama ),( Jin Sup Jung ),( Moon Kyoung Bae ),( Soo Kyung Bae ) 영남대학교 약품개발연구소 2011 영남대학교 약품개발연구소 연구업적집 Vol.21 No.-