A scanometric antibody probe for facile and sensitive immunoassays

Yi, So Yeon,Lee, UiJin,Chung, Bong Hyun,Jung, Juyeon The Royal Society of Chemistry 2015 Chemical communications Vol.51 No.42

<P>We have developed a novel scanometric antibody probe for rapid, sensitive, and naked-eye-visible immunoassays. Using this probe, we clearly demonstrated the successful scanometric detection and identification of influenza A viruses on a microarray. In addition, the sensitivity of the scanometric immunoassay was comparable to that of the fluorescence-based method.</P> <P>Graphic Abstract</P><P>We have developed a novel scanometric antibody probe for rapid, sensitive, and naked-eye-visible immunoassays. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c5cc02838h'> </P>

Naked Eye Detection of Salmonella typhimurium Using Scanometric Antibody Probe

Yi, So Yeon,Hwang, Seul-Gee,Moon, Jeong,Eom, Gayoung,Hwang, Ahreum,Sim, Jieun,Lim, Eun-Kyung,Jeong, Jinyoung,Kim, Bongsoo,Kang, Taejoon American Scientific Publishers 2017 Journal of Nanoscience and Nanotechnology Vol.17 No.7

<P>Salmonella is one of the most common foodborne pathogens, and Salmonella outbreaks are mostly associated with the intake of contaminated food or drink. Therefore, the rapid and sensitive on-site detection of Salmonella is very important. We report a naked eye detection method for Salmonella typhimurium using scanometric antibody probe. The antibody-attached glass substrate was treated with Salmonella typhimurium and the scanometric antibody probe was applied. After Ag enhancement of the probe, Salmonella typhimurium could be detected with the naked eye. The scanometric antibody probe was prepared by simply mixing Au nanoparticles, gold binding peptide-protein G, and antibody against Salmonella typhimurium. This probe can act as a signal enhancer and thus allows for an extremely simple, rapid, and efficient analysis of Salmonella typhimurium by the naked eye. We detected Salmonella typhimurium at a low concentration of 10(3) CFU/ml and clearly distinguished this bacterium from other foodborne pathogens. Furthermore, we successfully detected Salmonella typhimurium in milk, suggesting that this method can be useful in real-life samples. Because the scanometric antibody probe can be expanded to various types of antibodies, this naked eye detection method could be employed for the detection of various types of pathogens.</P>

A Simple and Rapid Methicillin-Resistant Staphylococcus aureus (MRSA) Screening Test Using a Mannose-Binding Lectin (MBL)-Conjugated Gold Nanoparticle Probe

Yi So Yeon,Jeong Jinyoung,Lee Wang Sik,Kwon Jungsun,Yoon Kyungah,Park Kyoungsook 한국미생물·생명공학회 2023 Journal of microbiology and biotechnology Vol.33 No.5

Rapid diagnosis of methicillin-resistant Staphylococcus aureus (MRSA) is essential for guiding clinical treatment and preventing the spread of MRSA infections. Herein, we present a simple and rapid MRSA screening test based on the aggregation effect of mannose-binding lectin (MBL)-conjugated gold nanoparticles (AuNP), called the MRSA probe. Recombinant MBL protein is a member of the lectin family and part of the innate immune system. It can recognize wall teichoic acid (WTA) on the membrane of MRSA more specifically than that of methicillin-sensitive Staphylococcus aureus (MSSA) under optimized salt conditions. Thus, the MRSA probe can selectively bind to MRSA, and the aggregation of the probes on the surface of the target bacteria can be detected and analyzed by the naked eye within 5 min. To demonstrate the suitability of the method for real-world application, we tested 40 clinical S. aureus isolates (including 20 MRSA specimens) and recorded a sensitivity of 100%. In conclusion, the MRSA probe-based screening test with its excellent sensitivity has the potential for successful application in the microbiology laboratory.

Laparoscopic treatment of a giant cystic adenomyosis with chronic pelvic pain: Rare Case Report

( So Yeon Jeong ),( Ji Yeon Min ),( Junghyun Bae ),( Yeong Jae Lee ),( Da Hye Ju ),( Sang Wook Yi ) 대한산부인과학회 2023 대한산부인과학회 학술대회 Vol.109 No.-

Expression and Purification of Recombinant Mayaro Virus Envelope Glycoproteins E1 and E2 to Develop a Mayaro Virus Detection System

So Yeon Yi,Kyungah Yoon,Jungsun Kwon,Kyoon Eon Kim,Kyoungsook Park,Yong Beom Shin 대한미생물학회 2020 Journal of Bacteriology and Virology Vol.50 No.1

자연 유산에서 드물게 관찰된 Jumping translocation 2례

이연우(Yeon Woo Lee),이봄이(Bom Yi Lee),박주연(Ju Yeon Park),최은영(Eun Young Choi),오아름(Ah Rum Oh),이신영(Shin Young Lee),류현미(Hyun Mee Ryu),강인수(Inn Soo Kang),양광문(Kwang Moon Yang),박소연(So Yeon Park) 대한의학유전학회 2010 대한의학유전학회지 Vol.7 No.1

Jumping translocation (JT)은 여러 세포주에서 하나의 공여 염색체가 둘 이상의 수여 염색체와 염색체 재배열을 보이는 염색체의 구조적 이상으로 종양 세포인 림프성 혈액암에서 빈번하게 관찰되는 획득성(acquired) JT에 비해 체질성(con-stitutional) JT는 매우 드물게 보고되고 있다. 본 증례에서는 자연 유산된 수태산물에서 관찰된 체질성 JT 2례를 보고하고자 한다. 증례 1은 임신 7주 유산아 조직의 세포유전학적 검사에서 핵형분석 결과는 46,XY,add(18)(p11.1)[61]/45,XY,der(18;21)(q10;q10)[32]/46,XY,-18,+mar[16]/46,XY,i(18)(q10)[9]/45,XY,der(15;18)(q10;q10)[6]/46,XY,+1,dic(1;18)(p22;p11.1)[2]/45,XY,der(13;18)(q10;q10)[1]/46,XY[32]로 관찰되었다. 공여 염색체는 18번이고 수여 염색체는 1, 13, 15, 18, 21번이었다. 증례 2는 임신 6주째 자연 유산된 유산아 조직으로부터 세포 유전학적 검사를 실시한 결과, 핵형은 46,XY,der(22)t(9;22)(q12;q13)[22]/46,XY,der(22)t(1;22)(q21;q13)[13]/46,XY,add(22)(q13)[5]/46,XY[23]고 관찰되었다. 공여 염색체는 22번이고 수여 염색체는 1, 9번이었다. 2례 모두 de novo였고 acrocentric 염색체를 수반하였으며 절단점은 대부분 중심절과 중심절 주위, 말단체에 존재하였다. 본 증례는 매우 드물게 관찰되는 체질성 JT로서 임신 초기 세포 분열 단계에서 발생했고 다양한 세포주에서 나타난 비정상 핵형으로 인해 정상적인 배발달이 이루어지지 못하여 자연 유산된 것으로 생각된다. Jumping translocations (JT) are chromosomal rearrangements involving one donor chromosome and several recipient chromosomes. While JTs are frequently observed as acquired chromosomal abnormalities in hematologic malignancies, constitutional JTs are only rarely reported. We report two cases of constitutional JT in chorionic villi derived from the products of conception. The karyotype of the first case was 46,XY,add(18)(p11.1)[61]/45,XY,der(18;21)(q10;q10)[32]/46,XY,-18,+mar[16]/46,XY,i(18)(q10)[9]/45,XY,der(15;18)(q10;q10)[6]/46,XY,+1,dic(1;18)(p22;p11.1)[2]/45,XY,der(13;18)(q10;q10)[1]/46,XY[32]. The donor was a chromosome 18. The recipient chromosomes were chromosomes 1, 13, 15, 18 and 21. In the second case, the karyotype was 46,XY,der(22)t(9;22)(q12;q13)[22]/46,XY,der(22)t(1;22)(q21;q13)[13]/46,XY,add(22)(q13)[5]/46,XY[23]. The donor was a chromosome 22 and recipients were chromosomes 1 and 9. Both cases were de novo. The breakpoints of chromosomes were mostly in centromeric regions, pericentromeric regions, or telomeric regions. Normal cell lines were observed in both cases. This report supports the prior findings that the unstable nature of JT, resulting in chromosomal imbalance, most likely contributed to these early miscarriages.

Prenatal diagnosis of a de novo ring chromosome 11

Ju-Yeon Park,Moon-Hee Lee,Bom-Yi Lee,Yeon-Woo Lee,Hyun-Mee Ryu,So-Yeon Park 대한의학유전학회 2007 대한의학유전학회지 Vol.4 No.1

고리염색체(Ring chromosome)는 매우 낮은 빈도로 발견되는 염색체 이상으로 모든 번호에서 보고되고 있으며 특히 끝곁 매듭 염색체(acrocentric chromosome)에서 빈번하게 관찰 된다. 본 증례는 ring chromosome(고리염색체)11의 산전진단에 관한 것이다. 산모는 36세의 여성으로 모체혈청검사에서 에드워드 증후군의 표시인자가 증가되어, 태아의 염색체 검사를 위해 임신 19.5주에 양수천자술을 시행하였다. 결과는 46,XX,r(11)[65]/45,XX,-11[16]/46,XX[34]로 고리염색체(ring chromosome) 11이 mosaic으로 관찰되었다. 혈액을 이용한 부모 염색체 검사는 모두 정상이었다. 임신 20주에 실시된 정밀초음파 검사에서는 자궁내성장장애(IUGR) 소견을 보였다. 모자익시즘의 확인을 위해 임신 22주에 재대 혈액을 이용한 두번째 염색체검사 결과는 46,XX,r(11)(p15.5q24.2)[229]/45,XX,-11 [15]이었으며 첫번째 검사에서 관찰되지 않았던 다양한 형태의 고리염색체(ring chromosome)가 소수의 세포에서 관찰되었다. 고리염색체(ring chromosome)11에 대한 FISH 검사에서는 11 염색체의 장완과 11 염색체의 단완의 subtelomeric 부위가 결실되어 있었다. A 36-year-old pregnant woman was referred for amniocentesis at 19.5 weeks gestation because of advanced maternal age and evidence of increased risk for Edward syndrome in the maternal serum screening test. Cytogenetic analysis of the cultured amniotic fluid cells revealed mosaicism for ring chromosome 11: 46,XX,r(11)[65]/45,XX,-11[16]/46,XX[34]. Parental karyotypes were normal. A targeted ultrasound showed intrauterine growth restriction (IUGR). Cordocentesis was performed to characterize the ring chromosome and to rule out tissue specific mosaicism. Karyotype was confirmed as 46,XX,r(11) (p15.5q24.2)[229]/45,XX,-11[15]. And a few new form of ring were detected in this culture. The deletion of subtelomeric regions in the ring chromosome were detected by fluorescent in situ hybridization (FISH ). The pregnancy was terminated. The fetal autopsy showed a growth-retarded female fetus with rocker bottom feet. We report a case of prenatally detected a de novo ring chromosome 11.

Prenatal diagnosis of interchromosomal insertion of Y chromosome heterochromatin in a family

Bom Yi Lee,Ju Yeon Park,Yeon Woo Lee,Ah Rum Oh,Shin Young Lee,So Yeon Park,Hyun Mee Ryu,Si Won Lee 대한의학유전학회 2017 대한의학유전학회지 Vol.14 No.2

Interchromosomal insertion of Y chromosome heterochromatin in an autosome was identified in a fetus and a family. A fetal karyotype was analyzed as 46,XX,dup(7)(?q22q21.1) in a referred amniocentesis at 16 weeks of gestation for advanced maternal age. In the familial karyotype analyses for identification of der(7), the mother, the first daughter and the maternal grandmother showed the same der(7) as the fetus’s. CBG-banding was positive at 7q22 region of der(7) that indicated inserted material was originated from heterochromatin. The origin of heterochromatic insertion region in der(7) of the fetus and the mother was found in Yq12 region by fluorescent in situ hybridization with a DYZ1 probe. In the specific analysis of Y chromosomal heterochromatic region of ins(7;Y) of the mother, 15 sequence tagged sites from Yp11.3 region including SRY to Yq11.223 region was not detected. Final karyotypes of the mother, the first daughter and the maternal grandmother were reported as 46,XX,der(7)ins(7;Y)(q21.3;q12q12). All female carriers of ins(7;Y) in the family showed normal phenotype and the mother and the maternal grandmother were fertile. A healthy girl was born at term. We report a rare case of familial interchromosomal insertion of Y chromosome heterochromatin detected only in female family members with normal phenotype that was diagnosed prenatally.

Prenatally Diagnosed Uncommon Mosaic Autosomal Trisomy

Bom-Yi Lee,So-Yeon Park,Moon-Hee Lee,Jin-Woo Kim,Ju-Yeon Park,Eun-Young Choi,Yeon-Woo Lee,Ah-Rum Oh,Shin-Young Lee,Min-Hyung Kim,Hyun-Mee Ryu 대한의학유전학회 2009 대한의학유전학회지 Vol.6 No.1

Prenatal diagnosis of rare autosome mosaicism involvingchromosomes other than chromosome 13, 18, 21 or the sex chromosome is encountered prognostic dilemma during genetic counseling. We report four cases of level Ⅲ uncommon mosaicism of trisomy 5, 16 and 20,diagnosed prenatally. In case 1 with mosaic trisomy 20, there was a higher mosaic ratio of trisomy 20 in the repeat amniocentesis (62.1%) than in the first (36.6%) with normal fetal ultrasound finding except for a relatively small aorta on a 3-vessel view of the fetal heart. Case 2 showed a low rate of mosaic trisomy 20 (5.25%) in cultured amniocytes but normal karyotype in the repeat amniocentesis, who delivered a normal healthy baby. Case 3 showed a 13.6% of trisomy 16 mosaicism in the 30 cells of cultured amniocytes. Sixty cells from a fetal blood sample at termination showed non-mosaic 46,XX normal karyotype, while skin fibroblasts had 22.5% trisomy 16 in 40 metaphases. The autopsy showed ventricular septal defect (VSD). Case 4 with low grade mosaicism (10.5%) of trisomy 5 resulted in elective termination, though the ultrasoumd showed growsly normal fetus. Although level Ⅲ mosaicism is regarded as true mosaicism, it is difficult to predict the outcome of the fetus with rare mosaic autosome trisomy. Therefore mosaic autosome trisomy of fetus should be carefully interpreted with more various approaches including repeat sampling and targeted fetal ultrasound. 산전에서 성염색체와 13번, 18번, 21번 염색체를 제외한상 염색체의 모자이시즘은 발생빈도가 낮고 증례보고가 적어서 예후 예측이 어렵다. 저자들은 삼염색체성 5번, 16번, 20번의 산전진단 4례를 보고하고자 한다. 모자잌 삼염색체성 20번 2례 중 증례 1은 양수 염색체 검사에서 36.6%의 모자이시즘을 보였으나 재검한 양수 검사에서는 보다 높은 빈도 (62.1%)를 보였다. 증례 2에서는 양수 염색체 검사에서 모자이시즘 삼염색체성 20번이 5.25% 였으나, 재검 양수천자결과는 정상 핵형을 보였다. 증례 3은 30개의 양수세포에서 삼염색체성 16번의 모자이시즘이 13.6% 관찰되었다. 임신 종결 후, 총 60개의 태아 혈액 세포에서 모자이시즘 없는 정상 핵형이 관찰되었으나 태아의 피부 섬유아세포에서 얻은 40개의 중기상 세포에서는 22.5%의 삼염색체성 16번 모자이시즘을 보였다. 부검결과 심실중격결손(ventricular septal defect)이 관찰되었다. 증례 4는 76개의 중기상 세포에서 10.5%의 삼염색체성 5번 모자이시즘을 보였으나 태아의 초음파검사에서는 정상소견을 보였다. Level Ⅲ 모자이시즘은 진성 모자이시즘으로 간주되지만 발생빈도가 낮은 상염색체의 삼염색체성 모자이시즘은 태아의 예후를 예견하기 어려우므로 산전 진단시 여러 조직의 재검 및 태아 초음파 소견과 함께 다양한 임상적 접근 방법으로 그 해석에 신중을 기해야 할 것으로 사료된다.

An unusual de novo duplication 10p/deletion 10q syndrome

Bom-Yi Lee,Ju-Yeon Park,Yeon-Woo Lee,Ah-Rum Oh,Shin-Young Lee,Eun-Young Choi,Moon-Young Kim,Hyun-Mee Ryu,So-Yeon Park 대한의학유전학회 2015 대한의학유전학회지 Vol.12 No.1

We herein report an analysis of a female baby with a de novo dup(10p)/del(10q) chromosomal aberration. A prenatal cytogenetic analysis was performed owing to abnormal ultrasound findings including a choroid plexus cyst, prominent cisterna magna, and a slightly medially displaced stomach. The fetal karyotype showed additional material attached to the terminal region of chromosome 10q. Parental karyotypes were both normal. At birth, the baby showed hypotonia, upslanting palpebral fissures, a nodular back mass, respiratory distress, neonatal jaundice and a suspicious polycystic kidney. We ascertained that the karyotype of the baby was 46,XX,der(10)(pter→q26.3::p11.2→pter) by cytogenetic and molecular cytogenetic analyses including high resolution GTG-and RBG-banding, fluorescence in situ hybridization, comparative genomic hybridization, and short tandem repeat marker analyses. While almost all reported cases of 10p duplication originated from one of the parents with a pericentric inversion, our case is extraordinarily rare as the de novo dup(10p)/ del(10q) presumably originated from a rearrangement at the premeiotic stage of the parental germ cell or from parental germline mosaicism.