• Pediatric Infection and Vaccine
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• 제24권1호
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• pp.44-53
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• 2017

목적: 소아 심장이식 환자에서 림프증식성 질환(posttransplant lymphoproliferative disorder [PTLD]) 발생과 Epstein-Barr virus (EBV) 정량값의 상관관계를 분석하고, PTLD의 발생에 영향을 주는 인자들에 대해서 알아보고자 하였다. 방법: 2006년 1월부터 2015년 3월까지 최근 9년간 서울아산병원 어린이병원에서 심장이식을 받은 18세 미만 환자 중 이식 후 최소 1개월 이상 추적 관찰이 가능한 경우를 대상으로 후향적으로 의무기록을 분석하였다. 결과: 총 40명의 심장이식 환자의 진단 시 나이의 중앙값은 11.5세(범위, 0.3-17.8세)였으며 이 중 3명에서 이식 후 4.3개월, 6.3개월 및 17개월째 PTLD가 발생하였다. 이식 후 혈중 EBV 정량 검사를 시행한 28명 중 최소 1회 이상 EBV 바이러스혈증이 관찰된 경우는 7명이었으며, PTLD로 진단받은 환자 3명이 모두 ${\geq}10,000copies/mL$의 EBV 바이러스혈증이 선행되어 있었다. PTLD 발생군은 PTLD 비발생군에 비해 어린 나이에 이식을 받았으며(P=0.021), 초기 및 최고 혈중 EBV 역가가 더 높은 경향을 보였으나 통계적인 차이는 없었다. 결론: 소아 심장이식 환자에서 이식 당시 어린 연령 및 이식 후 EBV 바이러스혈증 동반 여부가 PTLD 발생과 관련이 있었다. 추후 전향적인 연구를 통해서 소아 심장이식 환자에서 PTLD 발생을 적절히 예측할 수 있는 EBV 정량값의 지표를 구하는 것이 필요하겠다.

• Bulletin of the Korean Chemical Society
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• 제33권11호
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• pp.3676-3680
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• 2012

An Epstein-Barr virus (EBV)-based plasmid contains the EBV nuclear antigen 1 (EBNA1) gene and EBV replication origin (oriP) sequence. Since EBNA1 (the only EBV-encoded protein) is combined with oriP, it is replicated simultaneously with chromosomal DNA in human, primate, and canine cells and is faithfully segregated at a stable copy number upon cell division. Consequently, it can be used to stably express gene inserts over a prolonged time in target cells. We have previously shown that the polyamidoamine (PAMAM) dendrimer can be surface-modified with L-arginine. Arginine is present at a high frequency in the transactivator of transcription (Tat) sequences of human immunodeficiency virus (HIV). It presents high membrane permeability and permits effective transfer of DNA inside the cells. In this study, we constructed two kinds of recombinant DNA by inserting the luciferase gene and enhanced green fluorescence protein (eGFP) gene as reporter genes into the pCEP4 plasmid vector. We measured dynamic light scattering (DLS) and zeta potential after preparing PAMAM-based cationic polymer/EBV-based plasmid complexes. We performed transfection of HEK 293 cell lines with the polyplexes, and monitored luciferase activity and green fluorescence protein (GFP) expression. Our results show that PAMAM-based cationic polymer/EBV plasmid complexes provide enhanced and sustained gene expression.

• Journal of Microbiology and Biotechnology
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• 제21권10호
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• pp.1043-1048
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• 2011

A methanol extract of Cassia tora seeds was successively partitioned with diethyl ether, chloroform, ethyl acetate, and water, and the antitumor-promoting activity of the solvent fractions was determined by inhibition of Epstein-Barr virus early antigen (EBV-EA) activation induced by teleocidin B-4 in Raji cells. The diethyl ether (68.7%) and chloroform (91.2%) fractions and the hydrolysate (94.3%) of the ethyl acetate fraction had strong inhibitory activities. The chloroform and ethyl acetate fractions were chromatographed on silica gel and further purified by HPLC. Three active compounds, obtusifolin-2-glucoside (75.0%), chryso-obtusin-6-glucoside (56.8%), and norrubrofusarin-6-glucoside (39.4%), were obtained from the ethyl acetate fraction, and two active compounds, questin (97.9%) and chryso-obtusin (53.8%), were isolated from the chloroform fraction.

• 대한한방소아과학회지
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• 제18권2호
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• pp.233-249
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• 2004

Objectives : Infectious mononucleosis is a clinical syndrome caused by Epstein-Barr virus that is particularly common in adolescents and children. This study was progressed for current oriental medical treatment of infectious mononucleosis in china. The purpose of this study is the opening oriental medical approach to infectious mononucleosis in Korea Methods : Authors conducted a literature search in data of Traditional Chinese Medical Journal. The data were extracted in a standardized, predefined manner and accessed critically. Results : The study for infectious mononucleosis consists of basic, clinical, experimental study. Basic study consists of etiology & pathogenesis and the rule of treatment. Clinical study consists of symptoms-based treatment and adequate prescription treatment. Experimental study consists of effective herbs and new traditional chinese medical injection. Conclusion : Traditional chinese medical approach using herbs works in children with infectious mononucleosis in Korea.

• Natural Product Sciences
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• 제5권1호
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• pp.33-38
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• 1999

Ethanolic extracts of different parts of 10 local traditional vegetables (ulam) (Amaranthus gangeticus, Jussiaea linifolia, Eugenia polyantha, Trapa incisa, Trichosanthes anquina, Mangifera indica, Pachyrrhirus erosus, Barringtonia mcarostachya, Carica papaya, and Coleus tuberosus) were screened for in vitro antitumor promoting activity using the inhibition test of Epstein-Barr virus (EBV) activation in Raji cells induced by phorbol 12-myristate 13-acetate and sodium-n-butyrate. All the extracts were found to have strong inhibition activity toward EBV-activation, except for leaf extract of T. anquina. The extracts were non-cytotoxic to the Raji cells except for the extracts of A. gangeticus (leaves), B. macrostachya (leaves), E. polyantha (young leaves), and J. linifolia (leaves) where the viability of the cells were decreased significantly.

• Biomolecules & Therapeutics
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• 제19권4호
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• pp.398-410
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• 2011

Over the past few decades, our understanding of the epidemiology and immunopathogenesis of Hodgkin lymphoma (HL) has made enormous advances. Consequently, the treatment of HL has changed significantly, rendering this disease of the most curable human cancers. To date, about 80% of patients achieve long-term disease-free survival. However, therapeutic challenges still remain, particularly regarding the salvage strategies for relapsed and refractory disease, which need further identification of better prognostic markers and novel therapeutic schemes. Although the precise molecular mechanism by which Epstein-Barr virus (EBV) contributes to the generation of malignant cells present in HL still remains unknown, current increasing data on the role of EBV in the pathobiology of HL have encouraged people to start developing novel and specific therapeutic strategies for EBV-associated HL. This review will provide an overview of therapeutic approaches for acute EBV infection and the classical form of HL (cHL), especially focusing on EBV-associated HL cases.

• 생명과학회지
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• 제15권6호
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• pp.909-915
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• 2005

우리는 바이러스로는 최초로 miRNA를 생성한다고 보고된 Epstein-Barr virus (EBV)를 대상으로 EBV miRNA biogenesis를 연구했다. 먼저 EVB에 감염된 B 세포인 B95-8로부터 보고된 5 종의 EBV miRNA들인 BHRF1-1, BHRF1-2, BHRF1-3, BART1, 및 BART2 모두가 발현됨을 확인하였다. 그 다음 성숙된 EBV miRNA 서열로부터 예측되는 pri- 와 pre-miRNA들이 B95-8에서 각각 검출되어 EBV miRNA들도 이미 알려진 동물세포 miRNA와 유사한 생성 및 성숙과정을 거칠 가능성을 확인하였다 게놈 상에 2~7개씩 밀집하여 존재하는 동물세포 miRNA들과 유사하게 EBV 게놈의 2부 위에 밀집해서 존재하는 EBV miRNA들도 polycistronic하게 발현되는지 조사한 결과 B95-8에서 BHRF1-1, BHRF1-2 및 BHRF1-3를 포함하는 1,602 뉴클레오타이드의 긴 전사체가 RT-PCR로 확인되었다. 반면 BART1과 BART2는 mono cistronic하게 전사될 가능성이 확인되었다. 본 연구를 통하여 EBV miRNA들도 동물세포 miRNA들과 유사하게 poly cistronic 하게 발현될 수 있으며 pri-와 pre-miRNA 과정을 거쳐 성숙된 miRNA로 생성될 가능성을 확인하였다.

• 한국동물학회:학술대회논문집
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• 한국동물학회 1995년도 한국생물과학협회 학술발표대회
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• pp.325.1-325
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• 1995

No Abstract, See Full Text

• 한국동물학회:학술대회논문집
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• 한국동물학회 1997년도 한국생물과학협회 학술발표대회
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• pp.287.2-287
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• 1997

No Abstract, See Full Text

• BLOOD RESEARCH
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• 제53권4호
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• pp.329-332
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• 2018