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Yun Y, Park SS, Lee S, Seok H, Park S, Lee SY. Expanding Genotype-Phenotype Correlation of CLCNKA and CLCNKB Variants Linked to Hearing Loss. Int J Mol Sci 2023; 24:17077. [PMID: 38069401 PMCID: PMC10707517 DOI: 10.3390/ijms242317077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 11/26/2023] [Accepted: 11/27/2023] [Indexed: 12/18/2023] Open
Abstract
The ClC-K channels CLCNKA and CLCNKB are crucial for the transepithelial transport processes required for sufficient urinary concentrations and sensory mechanoelectrical transduction in the cochlea. Loss-of-function alleles in these channels are associated with various clinical phenotypes, ranging from hypokalemic alkalosis to sensorineural hearing loss (SNHL) accompanied by severe renal conditions, i.e., Bartter's syndrome. Using a stepwise genetic approach encompassing whole-genome sequencing (WGS), we identified one family with compound heterozygous variants in the ClC-K channels, specifically a truncating variant in CLCNKA in trans with a contiguous deletion of CLCNKA and CLCNKB. Breakpoint PCR and Sanger sequencing elucidated the breakpoint junctions derived from WGS, and allele-specific droplet digital PCR confirmed one copy loss of the CLCNKA_CLCNKB contiguous deletion. The proband that harbors the CLCNKA_CLCNKB variants is characterized by SNHL without hypokalemic alkalosis and renal anomalies, suggesting a distinct phenotype in the ClC-K channels in whom SNHL predominantly occurs. These results expanded genotypes and phenotypes associated with ClC-K channels, including the disease entities associated with non-syndromic hearing loss. Repeated identification of deletions across various extents of CLCNKA_CLCNKB suggests a mutational hotspot allele, highlighting the need for an in-depth analysis of the CLCNKA_CLCNKB intergenic region, especially in undiagnosed SNHL patients with a single hit in CLCNKA.
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Affiliation(s)
- Yejin Yun
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Sang Soo Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Soyoung Lee
- GENOME INSIGHT TECHNOLOGY Inc., Daejeon 34051, Republic of Korea (S.P.)
| | - Heeyoung Seok
- Department of Transdisciplinary Research and Collaboration, Genomics Core Facility, Biomedical Research Institute, Seoul National University Hospital, Seoul 03080, Republic of Korea
| | - Seongyeol Park
- GENOME INSIGHT TECHNOLOGY Inc., Daejeon 34051, Republic of Korea (S.P.)
| | - Sang-Yeon Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
- Department of Genomic Medicine, Seoul National University Hospital, Seoul 03080, Republic of Korea
- Sensory Organ Research Institute, Seoul National University Medical Research Center, Seoul 03080, Republic of Korea
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2
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Lee SY, Kim MY, Han JH, Park SS, Yun Y, Jee SC, Han JJ, Lee JH, Seok H, Choi BY. Ramifications of POU4F3 variants associated with autosomal dominant hearing loss in various molecular aspects. Sci Rep 2023; 13:12584. [PMID: 37537203 PMCID: PMC10400627 DOI: 10.1038/s41598-023-38272-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Accepted: 07/06/2023] [Indexed: 08/05/2023] Open
Abstract
POU4F3, a member of the POU family of transcription factors, commonly causes autosomal dominant deafness. Exome sequencing was used to identify four novel variants in POU4F3 (NM_002700.2), including c.564dupA: p.Ala189SerfsTer26, c.743T > C:p.Leu248Pro, c.879C > A:p.Phe293Leu, and c.952G > A:p.Val318Met, and diverse aspects of the molecular consequences of their protein expression, stability, subcellular localization, and transcriptional activity were investigated. The expression of three mutant proteins, encoded by missense variants, was reduced compared to the wild-type protein, demonstrating that the mutants were unstable and vulnerable to degradation. Additionally, all the mutant proteins had distinct subcellular localization patterns. A mutant protein carrying p.Ala189SerfsTer26, in which both mono- and bi-partite nuclear localization signals were disrupted, showed abnormal subcellular localization. Resultantly, all the mutant proteins significantly reduced the transcriptional activity required to regulate the downstream target gene expression. Furthermore, we identified the altered expression of 14 downstream target genes associated with inner ear development using patient-derived lymphoblastoid cell lines. There was a significant correlation of the expression profile between patient-derived cells and the cochlear hair cells, which provided a breakthrough for cases where the collection of human cochlear samples for transcriptome studies was unfeasible. This study expanded the genotypic spectrum of POU4F3 in DFNA15, and further refined the molecular mechanisms underlying POU4F3-associated DFNA15.
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Affiliation(s)
- Sang-Yeon Lee
- Department of Genomic Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
- Sensory Organ Research Institute, Seoul National University Medical Research Center, Seoul, Republic of Korea
| | - Min Young Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 300 Gumi-dong, Bundang-gu, Seongnam, 463-707, Republic of Korea
| | - Jin Hee Han
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 300 Gumi-dong, Bundang-gu, Seongnam, 463-707, Republic of Korea
| | - Sang Soo Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Yejin Yun
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Seung-Cheol Jee
- Department of Transdisciplinary Research and Collaboration, Genomics Core Facility, Biomedical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea
| | - Jae Joon Han
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jun Ho Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Heeyoung Seok
- Department of Transdisciplinary Research and Collaboration, Genomics Core Facility, Biomedical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea.
| | - Byung Yoon Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 300 Gumi-dong, Bundang-gu, Seongnam, 463-707, Republic of Korea.
- Sensory Organ Research Institute, Seoul National University Medical Research Center, Seoul, Republic of Korea.
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Abstract
Myocarditis was previously attributed to an epidemic viral infection. Additional harmful reagents, in addition to viruses, play a role in its etiology. Coronavirus disease 2019 (COVID-19) vaccine-induced myocarditis has recently been described, drawing attention to vaccine-induced myocarditis in children and adolescents. Its pathology is based on a series of complex immune responses, including initial innate immune responses in response to viral entry, adaptive immune responses leading to the development of antigen-specific antibodies, and autoimmune responses to cellular injury caused by cardiomyocyte rupture that releases antigens. Chronic inflammation and fibrosis in the myocardium eventually result in cardiac failure. Recent advancements in molecular biology have remarkably increased our understanding of myocarditis. In particular, microRNAs (miRNAs) are a hot topic in terms of the role of new biomarkers and the pathophysiology of myocarditis. Myocarditis has been linked with microRNA-221/222 (miR-221/222), miR-155, miR-10a*, and miR-590. Despite the lack of clinical trials of miRNA intervention in myocarditis yet, multiple clinical trials of miRNAs in other cardiac diseases have been aggressively conducted to help pave the way for future research, which is bolstered by the success of recently U.S. Food and Drug Administration-approved small-RNA medications. This review presents basic information and recent research that focuses on myocarditis and related miRNAs as a potential novel biomarker and the therapeutics.
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Affiliation(s)
- Jin-Hee Oh
- Department of Pediatrics, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Gi Beom Kim
- Department of Pediatrics, Seoul National University Children's Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Heeyoung Seok
- Department of Transdisciplinary Research and Collaboration, Genomics Core Facility, Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
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Lee JW, Hur J, Kwon YW, Chae CW, Choi JI, Hwang I, Yun JY, Kang JA, Choi YE, Kim YH, Lee SE, Lee C, Jo DH, Seok H, Cho BS, Baek SH, Kim HS. KAI1(CD82) is a key molecule to control angiogenesis and switch angiogenic milieu to quiescent state. J Hematol Oncol 2021; 14:148. [PMID: 34530889 PMCID: PMC8444549 DOI: 10.1186/s13045-021-01147-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 08/25/2021] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Little is known about endogenous inhibitors of angiogenic growth factors. In this study, we identified a novel endogenous anti-angiogenic factor expressed in pericytes and clarified its underlying mechanism and clinical significance. METHODS Herein, we found Kai1 knockout mice showed significantly enhanced angiogenesis. Then, we investigated the anti-angiogenic roll of Kai1 in vitro and in vivo. RESULTS KAI1 was mainly expressed in pericytes rather than in endothelial cells. It localized at the membrane surface after palmitoylation by zDHHC4 enzyme and induced LIF through the Src/p53 pathway. LIF released from pericytes in turn suppressed angiogenic factors in endothelial cells as well as in pericytes themselves, leading to inhibition of angiogenesis. Interestingly, KAI1 had another mechanism to inhibit angiogenesis: It directly bound to VEGF and PDGF and inhibited activation of their receptors. In the two different in vivo cancer models, KAI1 supplementation significantly inhibited tumor angiogenesis and growth. A peptide derived from the large extracellular loop of KAI1 has been shown to have anti-angiogenic effects to block the progression of breast cancer and retinal neovascularization in vivo. CONCLUSIONS KAI1 from PC is a novel molecular regulator that counterbalances the effect of angiogenic factors.
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Affiliation(s)
- Jin-Woo Lee
- National Research Laboratory for Stem Cell Niche, Center for Medical Innovation, Seoul National University Hospital, Seoul, Republic of Korea
- Center of Cell- and Bio-Therapy (CBT), Seoul National University Hospital, Seoul, Republic of Korea
| | - Jin Hur
- Department of Convergence Medicine, Pusan National University School of Medicine, Yangsan, Republic of Korea
| | - Yoo-Wook Kwon
- National Research Laboratory for Stem Cell Niche, Center for Medical Innovation, Seoul National University Hospital, Seoul, Republic of Korea
- Center of Cell- and Bio-Therapy (CBT), Seoul National University Hospital, Seoul, Republic of Korea
| | - Cheong-Whan Chae
- National Research Laboratory for Stem Cell Niche, Center for Medical Innovation, Seoul National University Hospital, Seoul, Republic of Korea
- Center of Cell- and Bio-Therapy (CBT), Seoul National University Hospital, Seoul, Republic of Korea
| | - Jae-Il Choi
- National Research Laboratory for Stem Cell Niche, Center for Medical Innovation, Seoul National University Hospital, Seoul, Republic of Korea
- Center of Cell- and Bio-Therapy (CBT), Seoul National University Hospital, Seoul, Republic of Korea
| | - Injoo Hwang
- National Research Laboratory for Stem Cell Niche, Center for Medical Innovation, Seoul National University Hospital, Seoul, Republic of Korea
- Center of Cell- and Bio-Therapy (CBT), Seoul National University Hospital, Seoul, Republic of Korea
| | - Ji-Yeon Yun
- National Research Laboratory for Stem Cell Niche, Center for Medical Innovation, Seoul National University Hospital, Seoul, Republic of Korea
- Center of Cell- and Bio-Therapy (CBT), Seoul National University Hospital, Seoul, Republic of Korea
| | - Jin-A Kang
- National Research Laboratory for Stem Cell Niche, Center for Medical Innovation, Seoul National University Hospital, Seoul, Republic of Korea
- Center of Cell- and Bio-Therapy (CBT), Seoul National University Hospital, Seoul, Republic of Korea
| | - Young-Eun Choi
- National Research Laboratory for Stem Cell Niche, Center for Medical Innovation, Seoul National University Hospital, Seoul, Republic of Korea
- Center of Cell- and Bio-Therapy (CBT), Seoul National University Hospital, Seoul, Republic of Korea
| | - Young Hyun Kim
- National Research Laboratory for Stem Cell Niche, Center for Medical Innovation, Seoul National University Hospital, Seoul, Republic of Korea
- Center of Cell- and Bio-Therapy (CBT), Seoul National University Hospital, Seoul, Republic of Korea
- Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, and College of Medicine or College of Pharmacy, Seoul National University, Seoul, Republic of Korea
| | - Sang Eun Lee
- National Research Laboratory for Stem Cell Niche, Center for Medical Innovation, Seoul National University Hospital, Seoul, Republic of Korea
- Center of Cell- and Bio-Therapy (CBT), Seoul National University Hospital, Seoul, Republic of Korea
| | - Cheol Lee
- Department of Pathology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Dong Hyun Jo
- Department of Anatomy, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Heeyoung Seok
- Genomics Core Facility, Department of Transdisciplinary Research and Collaboration, Biomedical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea
| | - Byong Seung Cho
- ExoCoBio Inc, Gasan digital 1-ro, Geumcheon-gu, Seoul, 08594, Republic of Korea
| | - Sung Hee Baek
- Creative Research Initiative Center for Chromatin Dynamics, School of Biological Sciences, Seoul National University, Seoul, 151-742, Republic of Korea
| | - Hyo-Soo Kim
- National Research Laboratory for Stem Cell Niche, Center for Medical Innovation, Seoul National University Hospital, Seoul, Republic of Korea.
- Center of Cell- and Bio-Therapy (CBT), Seoul National University Hospital, Seoul, Republic of Korea.
- Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, and College of Medicine or College of Pharmacy, Seoul National University, Seoul, Republic of Korea.
- Department of Internal Medicine, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, Korea.
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5
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Seok H, Oh JH. Hypertrophic Cardiomyopathy in Infants from the Perspective of Cardiomyocyte Maturation. Korean Circ J 2021; 51:733-751. [PMID: 34327880 PMCID: PMC8424452 DOI: 10.4070/kcj.2021.0153] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 06/08/2021] [Indexed: 11/16/2022] Open
Abstract
Hypertrophic cardiomyopathy (HCM) in infancy is rare and many fulminant cases are fatal. Infantile HCM shows a rapid progressive clinical course and different characteristics compared with late-onset HCM presenting during the prepubertal age. There are also spontaneously resolving phenotypes of HCM that are diagnosed in neonates being treated for bronchopulmonary dysplasia with corticosteroids or in those with other problems related to maternal endocrine diseases. The pathophysiology of infantile HCM has not been well described. Therefore, this review updates the pathophysiology of infantile HCM and includes molecular studies on maturation of cardiomyocytes from a clinician's point of view. Hypertrophic cardiomyopathy (HCM) is characterized by ventricular wall hypertrophy with diastolic dysfunction. Pediatric HCM is distinguished from the adult in many aspects. Most children with HCM do not present clinically until the adolescent period, even when they are born with genetic mutations. Some infants with early-onset HCM present with massive progressive myocardial hypertrophy in the first few months of life, which is often fatal. The mortality of pediatric HCM peaks during the infantile and adolescent periods. These periods roughly correlate with children's growth spurt. Non-sarcomeric causes of HCM are more frequent in pediatric HCM, while sarcomeric causes are more common in adults. From the perspective of cardiac development, the fetal heart has immature cardiomyocytes, which are characterized by proliferation and exit their cell cycles with a decreased regenerative property after birth. In the perinatal period, there is a dynamic change in maturation of cardiomyocytes from immature to mature cells. Infants who are treated with steroids or born to mothers with diabetes or hyperthyroidism often show phenotypes of HCM, which gradually resolve. With remarkable advancement of molecular biology, understanding on maturation of cardiomyocytes has increased. Neonates undergo abrupt environmental changes during the transitional circulation, which is affected by oxygen, metabolic and hormonal fluctuations. Derangement in physiological transition to the normal postnatal environment may influence maturation of proliferative immature cardiomyocytes during early infancy. This article reviews updates of infantile HCM and recent molecular studies related to maturation of cardiomyocytes from the clinical point of view of identifying distinct characteristics of infantile HCM.
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Affiliation(s)
- Heeyoung Seok
- Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
| | - Jin Hee Oh
- Department of Pediatrics, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
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6
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Abstract
Clustered regularly interspaced short palindromic repeats and CRISPR-associated protein 9 (CRISPR-Cas9) is an ancient prokaryotic defense system that precisely cuts foreign genomic DNA under the control of a small number of guide RNAs. The CRISPR-Cas9 system facilitates efficient double-stranded DNA cleavage that has been recently adopted for genome editing to create or correct inherited genetic mutations causing disease. Congenital heart disease (CHD) is generally caused by genetic mutations such as base substitutions, deletions, and insertions, which result in diverse developmental defects and remains a leading cause of birth defects. Pediatric CHD patients exhibit a spectrum of cardiac abnormalities such as septal defects, valvular defects, and abnormal chamber development. CHD onset occurs during the prenatal period and often results in early lethality during childhood. Because CRISPR-Cas9-based genome editing technology has gained considerable attention for its potential to prevent and treat diseases, we will review the CRISPR-Cas9 system as a genome editing tool and focus on its therapeutic application for CHD.
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Affiliation(s)
- Heeyoung Seok
- Department of Life Sciences, Korea University, Seoul, Korea
| | - Rui Deng
- Department of Cardiology, Boston Children's Hospital, Boston, MA, USA.,Department of Pediatrics, Harvard Medical School, Boston, MA, USA
| | - Douglas B Cowan
- Department of Cardiology, Boston Children's Hospital, Boston, MA, USA.,Department of Pediatrics, Harvard Medical School, Boston, MA, USA
| | - Da-Zhi Wang
- Department of Cardiology, Boston Children's Hospital, Boston, MA, USA.,Department of Pediatrics, Harvard Medical School, Boston, MA, USA
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7
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Seok H. A New Member of Myocardial Ischemia-Reperfusion (MI/R) Associated miRNAs, miR-484: Its Potential Cardiac Protection Role. Korean Circ J 2020; 50:264-266. [PMID: 32100482 PMCID: PMC7043955 DOI: 10.4070/kcj.2019.0413] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 12/27/2019] [Indexed: 11/11/2022] Open
Affiliation(s)
- Heeyoung Seok
- Division of Life Sciences, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea.
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8
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Seok H, Song J, Jeon JH, Choi HK, Choi WS, Moon S, Park DW. Timing of antibiotics in septic patients: a prospective cohort study. Clin Microbiol Infect 2020; 26:1495-1500. [PMID: 32062049 DOI: 10.1016/j.cmi.2020.01.037] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 01/30/2020] [Accepted: 01/31/2020] [Indexed: 12/24/2022]
Abstract
OBJECTIVES To evaluate the effect of timing and appropriateness of antibiotics administration on mortality in patients diagnosed with sepsis according to the Sepsis-3 definition. METHODS This prospective cohort study was conducted in patients diagnosed with sepsis according to the Sepsis-3 definition at the emergency department of Korea University Ansan Hospital from January 2016 to January 2019. The time to antibiotics was defined as the time in hours from emergency department arrival to the first antibiotic administration. Cox proportional hazards regression analysis was used to estimate the association between time to antibiotics and 7-, 14- and 28-day mortality. RESULTS Of 482 patients enrolled onto this study, 203 (42.1%) of 482 and 312 (64.7%) of 482 were diagnosed with septic shock and high-grade infection respectively. The median time to receipt of antibiotic therapy was 115 minutes. Antibiotics were administered within 3 and 6 hours in 340 (70.4%) of 482 and 450 (93.2%) of 482 patients respectively. Initial appropriate empirical antibiotics were administered in 375 (77.8%) of 482 patients. The time to and appropriateness of the initial antibiotics were not associated with 7-, 14- and 28-day mortality in multivariate analysis. The Sequential Organ Failure Assessment (SOFA) score (adjusted hazard ratio (aHR) 1.229, 95% confidence interval (CI) 1.093-1.381, p 0.001) and initial lactate levels (aHR 1.128, 95% CI 1.034-1.230, p 0.007), Charlson comorbidity index (aHR 1.115, 95% CI 1.027-1.210, p 0.014), 2-hour lactate level (aHR 1.115, 95% CI 1.027-1.210, p 0.009) and SOFA score (aHR 1.077, 95% CI 1.013-1.144, p 0.018) affected 7-, 14- and 28-day mortality respectively. Subgroup analysis with septic shock, bacteraemia and high-grade infection did not affect mortality rates. CONCLUSIONS Time to receipt of antibiotics may not affect the prognosis of patients with sepsis if a rapid and well-trained resuscitation is combined with appropriate antibiotic administration within a reasonable time.
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Affiliation(s)
- H Seok
- Division of Infectious Diseases, Department of Medicine, Republic of Korea
| | - J Song
- Department of Emergency Medicine, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Republic of Korea
| | - J H Jeon
- Division of Infectious Diseases, Department of Medicine, Republic of Korea
| | - H K Choi
- Division of Infectious Diseases, Department of Medicine, Republic of Korea
| | - W S Choi
- Division of Infectious Diseases, Department of Medicine, Republic of Korea
| | - S Moon
- Department of Emergency Medicine, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Republic of Korea
| | - D W Park
- Division of Infectious Diseases, Department of Medicine, Republic of Korea.
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9
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Seok H, Lee H, Jang ES, Chi SW. Evaluation and control of miRNA-like off-target repression for RNA interference. Cell Mol Life Sci 2017; 75:797-814. [PMID: 28905147 DOI: 10.1007/s00018-017-2656-0] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 09/06/2017] [Accepted: 09/07/2017] [Indexed: 01/08/2023]
Abstract
RNA interference (RNAi) has been widely adopted to repress specific gene expression and is easily achieved by designing small interfering RNAs (siRNAs) with perfect sequence complementarity to the intended target mRNAs. Although siRNAs direct Argonaute (Ago), a core component of the RNA-induced silencing complex (RISC), to recognize and silence target mRNAs, they also inevitably function as microRNAs (miRNAs) and suppress hundreds of off-targets. Such miRNA-like off-target repression is potentially detrimental, resulting in unwanted toxicity and phenotypes. Despite early recognition of the severity of miRNA-like off-target repression, this effect has often been overlooked because of difficulties in recognizing and avoiding off-targets. However, recent advances in genome-wide methods and knowledge of Ago-miRNA target interactions have set the stage for properly evaluating and controlling miRNA-like off-target repression. Here, we describe the intrinsic problems of miRNA-like off-target effects caused by canonical and noncanonical interactions. We particularly focus on various genome-wide approaches and chemical modifications for the evaluation and prevention of off-target repression to facilitate the use of RNAi with secured specificity.
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Affiliation(s)
- Heeyoung Seok
- Division of Life Sciences, College of Life Sciences and Biotechnology, Korea University, Seoul, 02841, Korea
| | - Haejeong Lee
- Division of Life Sciences, College of Life Sciences and Biotechnology, Korea University, Seoul, 02841, Korea
| | - Eun-Sook Jang
- Division of Life Sciences, College of Life Sciences and Biotechnology, Korea University, Seoul, 02841, Korea
- EncodeGEN Co. Ltd, Seoul, 06329, Korea
| | - Sung Wook Chi
- Division of Life Sciences, College of Life Sciences and Biotechnology, Korea University, Seoul, 02841, Korea.
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10
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Ko JH, Müller MA, Seok H, Park GE, Lee JY, Cho SY, Ha YE, Baek JY, Kim SH, Kang JM, Kim YJ, Jo IJ, Chung CR, Hahn MJ, Drosten C, Kang CI, Chung DR, Song JH, Kang ES, Peck KR. Suggested new breakpoints of anti-MERS-CoV antibody ELISA titers: performance analysis of serologic tests. Eur J Clin Microbiol Infect Dis 2017; 36:2179-2186. [PMID: 28695355 PMCID: PMC7087918 DOI: 10.1007/s10096-017-3043-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 06/04/2017] [Indexed: 01/03/2023]
Abstract
To provide optimal cut-off values of anti-Middle East respiratory syndrome coronavirus (MERS-CoV) serologic tests, we evaluated performance of ELISA IgG, ELISA IgA, IFA IgM, and IFA IgG using 138 serum samples of 49 MERS-CoV-infected patients and 219 serum samples of 219 rRT-PCR-negative MERS-CoV-exposed healthcare personnel and patients. The performance analysis was conducted for two different purposes: (1) prediction of neutralization activity in MERS-CoV-infected patients, and (2) epidemiologic surveillance of MERS-CoV infections among MERS-CoV-exposed individuals. To evaluate performance according to serum collection time, we used ‘days post onset of illness (dpoi)’ and ‘days post exposure (dpex)’ assessing neutralization activity and infection diagnosis, respectively. Performance of serologic tests improved with delayed sampling time, being maximized after a seroconversion period. In predicting neutralization activity, ELISA IgG tests showed optimal performance using sera collected after 21 dpoi at cut-off values of OD ratio 0.4 (sensitivity 100% and specificity 100%), and ELISA IgA showed optimal performance using sera collected after 14 dpoi at cut-off value of OD ratio 0.2 (sensitivity 85.2% and specificity 100%). In diagnosis of MERS-CoV infection, ELISA IgG exhibited optimal performance using sera collected after 28 dpex, at a cut-off value of OD ratio 0.2 (sensitivity 97.3% and specificity 92.9%). These new breakpoints are markedly lower than previously suggested values (ELISA IgG OD ratio 1.1, sensitivity 34.8% and specificity 100% in the present data set), and the performance data help serologic tests to be practically used in the field of MERS management.
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Affiliation(s)
- J-H Ko
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, Republic of Korea.,Division of Infectious Diseases, Department of Internal Medicine, Armed Forces Capital Hospital, Seongnam, South Korea
| | - M A Müller
- Institute of Virology, Charité - Universitätsmedizin Berlin, Helmut-Ruska-Haus Charitéplatz 1, 10117, Berlin, Germany.,German Centre for Infection Research, Braunschweig, Germany
| | - H Seok
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, Republic of Korea
| | - G E Park
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, Republic of Korea
| | - J Y Lee
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, Republic of Korea
| | - S Y Cho
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, Republic of Korea
| | - Y E Ha
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, Republic of Korea
| | - J Y Baek
- Asia Pacific Foundation for Infectious Diseases (APFID), Seoul, Republic of Korea
| | - S H Kim
- Asia Pacific Foundation for Infectious Diseases (APFID), Seoul, Republic of Korea
| | - J-M Kang
- Division of Infectious Diseases, Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Y-J Kim
- Division of Infectious Diseases, Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - I J Jo
- Department of Emergency Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - C R Chung
- Department of Critical Care Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - M-J Hahn
- Department of Molecular Cell Biology, Center for Molecular Medicine, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon, 440-746, South Korea
| | - C Drosten
- Institute of Virology, Charité - Universitätsmedizin Berlin, Helmut-Ruska-Haus Charitéplatz 1, 10117, Berlin, Germany.,German Centre for Infection Research, Braunschweig, Germany
| | - C-I Kang
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, Republic of Korea
| | - D R Chung
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, Republic of Korea.,Asia Pacific Foundation for Infectious Diseases (APFID), Seoul, Republic of Korea
| | - J-H Song
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, Republic of Korea.,Asia Pacific Foundation for Infectious Diseases (APFID), Seoul, Republic of Korea
| | - E-S Kang
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
| | - K R Peck
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, Republic of Korea.
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Park MS, Kim SK, Park HJ, Seok H, Kang SW, Lee SH, Kim YG, Moon JY, Kim TH, Kim YH, Kang SW, Chung JH, Jeong KH. Association Studies of Bone Morphogenetic Protein 2 Gene Polymorphisms With Acute Rejection in Kidney Transplantation Recipients. Transplant Proc 2017; 49:1012-1017. [PMID: 28583517 DOI: 10.1016/j.transproceed.2017.03.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Bone morphogenetic proteins (BMP) belong to the transforming growth factor beta superfamily of proteins. This study was performed to evaluate the association of BMP gene polymorphisms with acute renal allograft rejection (AR) and graft dysfunction (GD) in Koreans. METHODS Three hundred thirty-one patients who had kidney transplantation procedures were recruited. Transplantation outcomes were determined in terms of AR and GD criteria. We selected six single nucleotide polymorphisms (SNPs): rs1979855 (5' near gene), rs1049007 (Ser87Ser), rs235767 (intron), rs1005464 (intron), rs235768 (Arg190Ser), and rs3178250 (3; untranslated region). RESULTS Among the six SNPs tested, the rs235767, rs1005464, and rs3178250 SNPs were significantly associated with AR (P < .05). The rs1049007 and rs235768 SNPs also showed an association with GD (P < .05). CONCLUSIONS In conclusion, these results suggest that the BMP2 gene polymorphism may be related to the development of AR and GD in kidney transplant recipients.
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Affiliation(s)
- M-S Park
- Department of Surgery, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - S K Kim
- Kohwang Medical Research Institute, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - H J Park
- Kohwang Medical Research Institute, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - H Seok
- Kohwang Medical Research Institute, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - S W Kang
- Kohwang Medical Research Institute, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - S H Lee
- Department of Nephrology, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Y G Kim
- Department of Nephrology, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - J Y Moon
- Department of Nephrology, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - T H Kim
- Department of Nephrology, School of Medicine, In Je University, Busan, Republic of Korea
| | - Y H Kim
- Department of Nephrology, School of Medicine, In Je University, Busan, Republic of Korea
| | - S W Kang
- Department of Nephrology, School of Medicine, In Je University, Busan, Republic of Korea
| | - J-H Chung
- Kohwang Medical Research Institute, School of Medicine, Kyung Hee University, Seoul, Republic of Korea.
| | - K H Jeong
- Department of Nephrology, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
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12
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Abstract
Small interfering RNAs (siRNAs) have been developed to intentionally repress a specific gene expression by directing RNA-induced silencing complex (RISC), mimicking the endogenous gene silencer, microRNAs (miRNAs). Although siRNA is designed to be perfectly complementary to an intended target mRNA, it also suppresses hundreds of off-targets by the way that miRNAs recognize targets. Until now, there is no efficient way to avoid such off-target repression, although the mode of miRNA-like interaction has been proposed. Rationally based on the model called “transitional nucleation” which pre-requires base-pairs from position 2 to the pivot (position 6) with targets, we developed a simple chemical modification which completely eliminates miRNA-like off-target repression (0%), achieved by substituting a nucleotide in pivot with abasic spacers (dSpacer or C3 spacer), which potentially destabilize the transitional nucleation. Furthermore, by alleviating steric hindrance in the complex with Argonaute (Ago), abasic pivot substitution also preserves near-perfect on-target activity (∼80-100%). Abasic pivot substitution offers a general means of harnessing target specificity of siRNAs to experimental and clinical applications where misleading and deleterious phenotypes from off-target repression must be considered. [BMB Reports 2016; 49(3): 135-136]
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Affiliation(s)
- Heeyoung Seok
- Division of Life Sciences, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Korea
| | | | - Sung Wook Chi
- Division of Life Sciences, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Korea
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13
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Seok H, Ham J, Jang ES, Chi SW. MicroRNA Target Recognition: Insights from Transcriptome-Wide Non-Canonical Interactions. Mol Cells 2016; 39:375-81. [PMID: 27117456 PMCID: PMC4870184 DOI: 10.14348/molcells.2016.0013] [Citation(s) in RCA: 110] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 04/04/2016] [Accepted: 04/04/2016] [Indexed: 11/27/2022] Open
Abstract
MicroRNAs (miRNAs) are small non-coding RNAs (∼22 nucleotides) regulating gene expression at the post-transcriptional level. By directing the RNA-induced silencing complex (RISC) to bind specific target mRNAs, miRNA can repress target genes and affect various biological phenotypes. Functional miRNA target recognition is known to majorly attribute specificity to consecutive pairing with seed region (position 2-8) of miRNA. Recent advances in a transcriptome-wide method of mapping miRNA binding sites (Ago HITS-CLIP) elucidated that a large portion of miRNA-target interactions in vivo are mediated not only through the canonical "seed sites" but also via non-canonical sites (∼15-80%), setting the stage to expand and determine their properties. Here we focus on recent findings from transcriptome-wide non-canonical miRNA-target interactions, specifically regarding "nucleation bulges" and "seed-like motifs". We also discuss insights from Ago HITS-CLIP data alongside structural and biochemical studies, which highlight putative mechanisms of miRNA target recognition, and the biological significance of these non-canonical sites mediating marginal repression.
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Affiliation(s)
- Heeyoung Seok
- Division of Life Sciences, College of Life Sciences and Biotechnology, Korea University, Seoul 02841,
Korea
| | - Juyoung Ham
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology, Sungkyunkwan University, Seoul 06351,
Korea
| | | | - Sung Wook Chi
- Division of Life Sciences, College of Life Sciences and Biotechnology, Korea University, Seoul 02841,
Korea
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14
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Lee HS, Seok H, Lee DH, Ham J, Lee W, Youm EM, Yoo JS, Lee YS, Jang ES, Chi SW. Abasic pivot substitution harnesses target specificity of RNA interference. Nat Commun 2015; 6:10154. [PMID: 26679372 PMCID: PMC4703836 DOI: 10.1038/ncomms10154] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Accepted: 11/08/2015] [Indexed: 01/06/2023] Open
Abstract
Gene silencing via RNA interference inadvertently represses hundreds of off-target transcripts. Because small interfering RNAs (siRNAs) can function as microRNAs, avoiding miRNA-like off-target repression is a major challenge. Functional miRNA-target interactions are known to pre-require transitional nucleation, base pairs from position 2 to the pivot (position 6). Here, by substituting nucleotide in pivot with abasic spacers, which prevent base pairing and alleviate steric hindrance, we eliminate miRNA-like off-target repression while preserving on-target activity at ∼ 80-100%. Specifically, miR-124 containing dSpacer pivot substitution (6pi) loses seed-mediated transcriptome-wide target interactions, repression activity and biological function, whereas other conventional modifications are ineffective. Application of 6pi allows PCSK9 siRNA to efficiently lower plasma cholesterol concentration in vivo, and abolish potentially deleterious off-target phenotypes. The smallest spacer, C3, also shows the same improvement in target specificity. Abasic pivot substitution serves as a general means to harness the specificity of siRNA experiments and therapeutic applications.
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Affiliation(s)
- Hye-Sook Lee
- Division of Life Sciences, College of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Korea
| | - Heeyoung Seok
- Division of Life Sciences, College of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Korea
| | - Dong Ha Lee
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology, Sungkyunkwan University, Seoul 135-710, Korea
| | - Juyoung Ham
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology, Sungkyunkwan University, Seoul 135-710, Korea
| | - Wooje Lee
- Division of Life Sciences, College of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Korea
| | - Emilia Moonkyung Youm
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology, Sungkyunkwan University, Seoul 135-710, Korea
| | - Jin Seon Yoo
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology, Sungkyunkwan University, Seoul 135-710, Korea
| | | | - Eun-Sook Jang
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology, Sungkyunkwan University, Seoul 135-710, Korea.,EncodeGEN Co. Ltd., Seoul 135-994, Korea
| | - Sung Wook Chi
- Division of Life Sciences, College of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Korea.,Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology, Sungkyunkwan University, Seoul 135-710, Korea.,Samsung Research Institute for Future Medicine, Samsung Medical Center, Seoul 135-710, Korea
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15
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Seok H, Jung CH, Kim SW, Lee MJ, Lee WJ, Kim JH, Lee BW. Clinical characteristics and insulin independence of Koreans with new-onset type 2 diabetes presenting with diabetic ketoacidosis. Diabetes Metab Res Rev 2013; 29:507-13. [PMID: 23653323 DOI: 10.1002/dmrr.2421] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2012] [Revised: 12/29/2012] [Accepted: 04/07/2013] [Indexed: 11/10/2022]
Abstract
BACKGROUND We evaluated the incidence, characteristics and insulin independence of Koreans with new-onset type 2 diabetes (T2D) initially presenting with diabetic ketoacidosis (DKA). METHODS We analysed clinical and biochemical data from diabetic patients presenting with DKA. They were classified into ketosis-prone diabetes (KPD) type 1A (KPD-T1A) (A+β-), type 1B (KPD-T1B) (A-β-), type 2A (KPD-T2A) (A+β+) or type 2B (KPD-T2B) (A-β+) according to the presence or absence of an autoantibody and β-cell reserve. Changes in therapy after insulin discontinuation were evaluated for up to 4 years. We also compared clinical and biochemical characteristics between newly diagnosed T2D patients presenting with DKA and previously diagnosed T2D patients presenting with DKA. RESULTS Among 60 newly diagnosed KPD patients, 18, 21 and 21 patients were classified as KPD-T1A, KPD-T1B and KPD-T2B, respectively. In the KPD-T2B group, both fasting and stimulated C-peptide were recovered over 6 months. After 4 years of DKA development, 75% of KPD-T2B subjects no longer required insulin. Compared with previously diagnosed T2D patients presenting with DKA, newly diagnosed KPD-T2B patients tended to be younger, more obese and showed better insulin secretory function after recovery from DKA. CONCLUSIONS New-onset T2D patients presenting with DKA was not uncommon among the Korean population. In contrast to previously diagnosed T2D patients presenting with DKA, who showed a progressive decrease in insulin secretory function, new-onset KPD-T2B patients recovered insulin secretory function over time, and insulin independence could be expected.
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Affiliation(s)
- H Seok
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
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Karasu Y, Dilbaz B, Demir B, Dilbaz S, Secilmis Kerimoglu O, Ercan CM, Keskin U, Korkmaz C, Duru NK, Ergun A, de Zuniga I, Horton M, Oubina A, Scotti L, Abramovich D, Pascuali N, Tesone M, Parborell F, Bouzas N, Yang XH, Chen SL, Chen X, Ye DS, Zheng HY, Nyboe Andersen A, Lauritsen MP, Thuesen LL, Khodadadi M, Shivabasavaiah S, Mozafari R, Ansari Z, Hamdine O, Broekmans F, Eijkemans MJC, Cohlen BJ, Verhoeff A, van Dop PA, Bernardus RE, Lambalk CB, Oosterhuis GJE, Holleboom C, van den Dool-Maasland GC, Verburg HJ, van der Heijden PFM, Blankhart A, Fauser BCJM, Laven JSE, Macklon NS, Agudo D, Lopez C, Alonso M, Huguet E, Bronet F, Garcia-Velasco JA, Requena A, Gonzalez Comadran M, Checa MA, Duran M, Fabregues F, Carreras R, Ersahin A, Kahraman S, Kavrut M, Gorgen B, Acet M, Dokuzeylul N, Aybar F, Lim SY, Park JC, Bae JG, Kim JI, Rhee JH, Mahran A, Abdelmeged A, El-Adawy A, Eissa M, Darne J, Shaw RW, Amer SA, Dai A, Yan G, He Q, Hu Y, Sun H, Ferrero H, Gomez R, Garcia-Pascual CM, Simon C, Gaytan F, Pellicer A, Garcia Pascual CM, Zimmermann RC, Ferrero H, Simon C, Pellicer A, Gomez R, Madani T, Mohammadi Yeganeh L, Khodabakhshi SH, Akhoond MR, Hasani F, Monzo C, Haouzi D, Assou S, Dechaud H, Hamamah S, Amer S, Mahran M, Eissa M, Darne J, Shaw R, Lan V, Nhu G, Tuong H, Mahmoud Youssef MA, Aboulfoutouh I, Al-inany H, Van Der Veen F, Van Wely M, Zhang Q, Fang T, Wu S, Zhang L, Wang B, Li X, Yan G, Sun H, Hu Y, He Q, Ding L, Day A, Wang B, Yan G, Hu Y, Sun H, Zhang L, Fang T, Zhang Q, Wu S, Yan G, Sun H, Hu Y, Fulford B, Boivin J, Alanbay I, Ercan CM, Sakinci M, Coksuer H, Ozturk M, Tapan S, Chung CK, Chung Y, Seo S, Aksoy S, Yakin K, Caliskan S, Salar Z, Ata B, Urman B, Devroey P, Pellicer A, Nyboe Andersen A, Arce JC, Harrison K, Irving J, Osborn J, Harrison M, Fusi F, Arnoldi M, Cappato M, Galbignani E, Galimberti A, Zanga L, Frigerio L, Taghavi SA, Ashrafi M, Karimian L, Mehdizadeh M, Joghataie M, Aflatoonian R, Xu B, Cui YG, Gao LL, Diao FY, Li M, Liu XQ, Liu JY, Jiang F, Li M, Cui YG, Diao FY, Liu JY, Jee BC, Yi G, Kim JY, Suh CS, Kim SH, Liu S, Cui YG, Liu JY, Cai LB, Liu JJ, Ma X, Geenen E, Bots RSGM, Smeenk JMJ, Chang E, Lee W, Seok H, Kim Y, Han J, Yoon T, Lazaros L, Xita N, Zikopoulos K, Makrydimas G, Kaponis A, Sofikitis N, Stefos T, Hatzi E, Georgiou I, Atilgan R, Kumbak B, Sahin L, Ozkan ZS, Simsek M, Sapmaz E, Karacan M, Alwaeely FA, Cebi Z, Berberoglugil M, Ulug M, Camlibel T, Kavrut M, Kahraman S, Ersahin A, Acet M, Yelke H, Kamalak Z, Carlioglu A, Akdeniz D, Uysal S, Inegol Gumus I, Ozturk Turhan N, Regan S, Yovich J, Stanger J, Almahbobi G, Kara M, Aydin T, Turktekin N, Youssef M, Aboulfoutouh I, Al-Inany H, van der Veen F, van Wely M, Hart R, Doherty D, Frederiksen H, Keelan J, Pennell C, Newnham J, Skakkebaek N, Main K, Salem HT, Ismail AA, Viola M, Siebert TI, Steyn DW, Kruger TF, Robin G, Dewailly D, Thomas P, Leroy M, Lefebvre C, soudan B, Pigny P, Decanter C, ElPrince M, Wang F, Zhu Y, Huang H, Valdez Morales F, Vital Reyes V, Mendoza Rodriguez A, Gamboa Dominguez A, Cerbon M, Aizpurua J, Ramos B, Luehr B, Moragues I, Rogel S, Cil AP, Guler ZB, Kisa U, Albu A, Radian S, Grigorescu F, Albu D, Fica S, Al Boghdady L, Ghanem ME, Hassan M, Helal AS, Ozdogan S, Ozdegirmenci O, Dilbaz S, Demir B, Cinar O, Dilbaz B, Goktolga U, Seeber B, Tsybulyak I, Bottcher B, Grubinger T, Czech T, Wildt L, Wojcik J, Howles CM, Destenaves B, Arriagada P, Tavmergen E, Sahin G, Akdogan A, Levi R, Goker ENT, Thuesen LL, Loft A, Smitz J, Nyboe Andersen A, Ricciardi L, Di Florio C, Busacca M, Gagliano D, Immediata V, Selvaggi L, Romualdi D, Guido M, Bouhanna P, Salama S, Kamoud Z, Torre A, Paillusson B, Fuchs F, Bailly M, Wainer R, Tagliaferri V, Busacca M, Gagliano D, Di Florio C, Tartaglia C, Cirella E, Romualdi D, Guido M, Aflatoonian A, Eftekhar M, Mohammadian F, Yousefnejad F, De Cicco S, Gagliano D, Busacca M, Di Florio C, Immediata V, Campagna G, Romualdi D, Guido M, Depalo R, Lippolis C, Vacca M, Nardelli C, Selvaggi L, Cavallini A, Panic T, Mitulovic G, Franz M, Sator K, Tschugguel W, Pietrowski D, Hildebrandt T, Cupisti S, Giltay EJ, Gooren LJ, Oppelt PG, Hackl J, Reissmann C, Schulze C, Heusinger K, Attig M, Hoffmann I, Beckmann MW, Dittrich R, Mueller A, Sharma S, Singh S, Chakravarty A, Sarkar A, Rajani S, Chakravarty BN, Dilbaz S, Ozturk E, Ozdegirmenci O, Demir B, Isikoglu S, Kul S, Dilbaz B, Cinar O, Goktolga U, Eftekhar M, Aflatoonian A, Mohammadian F, Broekmans F, Hillensjo T, Witjes H, Elbers J, Mannaerts B, Gordon K, Krasnopolskaya K, Galaktionova A, Gorskaya O, Kabanova D, Venturella R, Morelli M, Mocciaro R, Capasso S, Cappiello F, Zullo F, Monterde M, Gomez R, Marzal A, Vega O, Rubio-Rubio JM, Diaz-Garcia C, Pellicer A, Gordon K, Kolibianakis E, Griesinger G, Yding Andersen C, Witjes H, Mannaerts B, Ocal P, Guralp O, Aydogan B, Irez T, Cetin M, Senol H, Erol N, Yding Andersen C, Kolibianakis E, Devroey P, Witjes H, Mannaerts B, Gordon K, Griesinger G, Rombauts L, Van Kuijk J, Mannaerts B, Montagut J, Nogueira D, Porcu G, Chomier M, Giorgetti C, Nicollet B, Degoy J, Lehert P, Alviggi C, De Rosa P, Vallone R, Picarelli S, Coppola M, Conforti A, Strina I, Di Carlo C, De Placido G, Hackl J, Cupisti S, Haeberle L, Schulze C, Hildebrandt T, Oppelt PG, Reissmann C, Heusinger K, Attig M, Hoffmann I, Dittrich R, Beckmann MW, Mueller A, Akdogan A, Demirtas O, Sahin G, Tavmergen E, Goker ENT, Fatemi H, Shapiro BS, Griesinger G, Witjes H, Gordon K, Mannaerts BM, Chimote MN, Mehta BN, Chimote NN, Nath NM, Chimote NM, Karia S, Bonifacio M, Bowman M, McArthur S, Jung J, Cho S, Choi Y, Lee B, Seo S, Lee KH, Kim CH, Kwon SK, Kim SH, Kang BM, Jung KS, Basios G, Trakakis E, Hatziagelaki E, Vaggopoulos V, Tsiavou A, Panagopoulos P, Chrelias C, Kassanos D, Sarhan A, Elsamanoudy A, Harira M, Dogan S, Bozdag G, Esinler I, Polat M, Yarali H. REPRODUCTIVE ENDOCRINOLOGY. Hum Reprod 2012. [DOI: 10.1093/humrep/27.s2.88] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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17
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Colakoglu M, Toy H, Icen MS, Vural M, Mahmoud AS, Yazici F, Buendgen N, Cordes T, Schultze-Mosgau A, Diedrich K, Beyer D, Griesinger G, Oude Loohuis EJ, Nahuis MJ, Bayram N, Hompes PGA, Oosterhuis GJE, Bossuyt PM, van der Veen F, Mol BWJ, van Wely M, Nahuis MJ, Oude Loohuis EJ, Kose N, Bayram N, Hompes PGA, Oosterhuis GJE, Bossuyt PM, van der Veen F, Mol BWJ, van Wely M, Yaba A, Demir N, Allegra A, Pane A, Marino A, Scaglione P, Ruvolo G, Manno M, Volpes A, Lunger F, Wildt L, Seeber B, Kolibianakis EM, Venetis CA, Bosdou J, Toulis K, Goulis DG, Tarlatzi TB, Tarlatzis BC, Franz M, Keck C, Daube S, Pietrowski D, Demir N, Yaba A, Iannetta R, Santos RDS, Lima TP, Giolo F, Iannetta O, Martins WP, Paula FJ, Ferriani RA, Rosa e Silva ACJS, Martinelli CE, Reis RM, Devesa M, Rodriguez I, Coroleu B, Tur R, Gonzalez C, Barri PN, Nardo LG, Mohiyiddeen L, Mulugeta B, McBurney H, Roberts SA, Newman WG, Grynberg M, Lamazou F, Even M, Gallot V, Frydman R, Fanchin R, Abdalla H, Nicopoullos J, Leader A, Pang S, Witjes H, Gordon K, Devroey P, Arrivi C, Ferraretti AP, Magli MC, Tartaglia ML, Fasolino MC, Gianaroli L, Macek sr. M, Feldmar P, Kluckova H, Hrehorcak M, Diblik J, Cernikova J, Paulasova P, Turnovec M, Macek jr. M, Hillensjo T, Yeko T, Witjes H, Elbers J, Devroey P, Mardesic T, Abuzeid M, Witjes H, Mannaerts B, Okubo T, Matsuo R, Kuwayama M, Teramoto S, Chakraborty P, Goswami SK, Chakravarty BN, Nandi SS, Kabir SN, Ramos Vidal J, Prados N, Caligara C, Garcia J, Carranza FJ, Gonzalez-Ravina A, Salazar A, Tocino A, Rodriguez I, Fernandez-Sanchez M, Ito H, Iwasa T, Hasegawa E, Hatano K, Nakayama D, Kazuka M, Usuda S, Isaka K, Ventura V, Doria S, Fernandes S, Barros A, Valkenburg O, Lao O, Schipper I, Louwers YV, Uitterlinden AG, Kayser M, Laven JSE, Sharma S, Goswami S, Goswami SK, Ghosh S, Chattopadhyay R, Sarkar A, Chakravarty BN, Louwers YV, Valkenburg O, Lie Fong S, van Dorp W, de Jong FH, Laven JSE, Ghosh S, Chattopadhyay R, Goswami SK, Radhika KL, Chakravarty BN, Benkhalifa M, Demirol A, Montjeant D, Delagrange P, Gentien D, Giakoumakis G, Menezo Y, Dattilo M, Gurgan T, Engels S, Blockeel C, Haentjens P, De Vos M, Camus M, Devroey P, Dimitraki M, Koutlaki N, Gioka T, Messini CI, Dafopoulos K, Messinis IE, Gurlek B, Batioglu S, Ozyer S, Nafiye Y, Kale I, Karayalcin R, Uncu G, Kasapoglu I, Uncu Y, Celik N, Ozerkan K, Ata B, Ferrero H, Gomez R, Delgado F, Simon C, Gaytan F, Pellicer A, Osborn JC, Fien L, Wolyncevic J, Esler JH, Choi D, Kim N, Choi J, Jo M, Lee E, Lee D, Fujii R, Neyatani N, Waseda T, Oka Y, Takagi H, Tomizawa H, Sasagawa T, Makinoda S, Ajina M, Zorgati H, Ben Salem A, Ben Ali H, Mehri S, Touhami M, Saad A, Piouka A, Karkanaki A, Katsikis I, Delkos D, Mousatat T, Daskalopoulos G, Panidis D, Pantos K, Stavrou D, Sfakianoudis K, Angeli E, Chronopoulou M, Vaxevanoglou T, Jones R GMJ, Lee WD, Kim SD, Jee BC, Kim KC, Kim KH, Kim SH, Kim YJ, Park KA, Chae SJ, Lim KS, Hur CY, Kang YJ, Lee WD, Lim JH, Tomizawa H, Makinoda S, Fujita S, Waseda T, Fujii R, Utsunomiya R T, Vieira C, Martins WP, Fernandes JBF, Soares GM, Reis RM, Silva de Sa MF, Ferriani R RA, Yoo JH, Kim HO, Cha SH, Koong MK, Song IO, Kang IS, Hatakeyama N, Jinno M, Watanabe A, Hirohama J, Hiura R, Konig TE, Beemsterboer SN, Overbeek A, Hendriks ML, Heymans MW, Hompes P, Homburg R, Schats R, Lambalk CB, van der Houwen L, Konig TE, Overbeek A, Hendriks ML, Beemsterboer SN, Kuchenbecker WK, Renckens CNM, Bernardus RE, Schats R, Homburg R, Hompes P, Lambalk CB, Potdar N, Gelbaya TA, Nardo LG, de Groot PCM, Dekkers OM, Romijn JA, Dieben SWM, Helmerhorst FM, Guivarch Leveque A, Homer L, Broux PL, Moy L, Priou G, Vialard J, Colleu D, Arvis P, Dewailly D, Aghahosseini M, Aleyasin A, Sarvi F, Safdarian L, Rahmanpour H, Akhtar MA, Navaratnam K, Ankers D, Sharma SD, Son WY, Chung JT, Reinblatt S, Dahan M, Demirtas M, Holzer H, Aspichueta F, Exposito A, Crisol L, Prieto B, Mendoza R, Matorras R, Kim K, Lee J, Jee B, Lee W, Suh C, Moon J, Kim S, Sarapik A, Velthut A, Haller-Kikkatalo K, Faure GC, Bene MC, de Carvalho M, Massin F, Uibo R, Salumets A, Alhalabi M, Samawi S, Taha A, Kafri N, Modi S, Khatib A, Sharif J, Othman A, Hamamah S, Assou S, Anahory T, Loup V, Dechaud H, Dewailly D, Mousavi Fatemi H, Doody K, Witjes H, Mannaerts B, Basconi V, Jungblut L, Young E, Van Thillo G, Paz D, Pustovrh MC, Fabbri R, Pasquinelli G, Magnani V, Macciocca M, Parazza I, Battaglia C, Paradisi R, Venturoli S, Ono M, Teranisi A, Fumino T, Ohama N, Hamai H, Chikawa A, Takata R, Teramura S, Iwahasi K, Shigeta M, Heidari M, Farahpour M, Talebi S, Edalatkhah H, Zarnani AH, Ardekani AM, Pietrowski D, Szabo L, Sator M, Just A, Franz M, Egarter C, Hope N, Motteram C, Rombauts LJ, Lee W, Chang E, Han J, Won H, Yoon T, Seok H, Diao FY, Mao YD, Wang W, Ding W, Liu JY, Chang E, Yoon T, Lee W, Cho J, Kwak I, Kim Y, Afshan I, Cartwright R, Trew G, Lavery S, Lockwood G, Niyani K, Banerjee S, Chambers A, Pados G, Tsolakidis D, Billi H, Athanatos D, Tarlatzis B, Salumets A, Laanpere M, Altmae S, Kaart T, Stavreus-Evers A, Nilsson TK, van Dulmen-den Broeder E, van der Stroom E, Konig TE, van Montfrans J, Overbeek A, van den Berg MH, van Leeuwen FE, Lambalk CB, Taketani T, Tamura H, Tamura I, Asada H, Sugino N, Al - Azemi M, Kyrou D, Papanikolaou EG, Polyzos NP, Devroey P, Fatemi HM, Qiu Z, Yang L, Yan G, Sun H, Hu Y, Mohiyiddeen L, Higgs J, Roberts S, Newman W, Nardo LG, Ho C, Guijarro JA, Nunez R, Alonso J, Garcia A, Cordeo C, Cortes S, Caballero P, Soliman S, Baydoun R, Wang B, Shreeve N, Cagampang F, Sadek K, Hill CM, Brook N, Macklon N, Cheong Y, Santana R, Setti AS, Maldonado LG, Valente FM, Iaconelli C, Braga DPAF, Iaconelli Jr. A, Borges Jr. E, Yoon JS, Won MY, Kim SD, Jung JH, Yang SH, Lim JH, Kavrut M, Kahraman S, Sadek KH, Bruce KB, Macklon N, Cagampang FR, Cheong YC, Cota AMM, Oliveira JBA, Petersen CG, Mauri AL, Massaro FC, Silva LFI, Vagnini LD, Nicoletti A, Pontes A, Cavagna M, Baruffi RLR, Franco Jr. JG, Won MY, Kim SD, Yoon JS, Jung JH, Yang SH, Lim JH, Kim SD, Kim JW, Yoon TK, Lee WS, Han JE, Lyu SW, Shim SH, Kuwabara Y, Katayama A, Tomiyama R, Piao H, Ono S, Shibui Y, Abe T, Ichikawa T, Mine K, Akira S, Takeshita T, Hatzi E, Lazaros L, Xita N, Kaponis A, Makrydimas G, Sofikitis N, Stefos T, Zikopoulos K, Georgiou I, Guimera M, Casals G, Fabregues F, Estanyol JM, Balasch J, Mochtar MH, Van den Wijngaard L, Van Voorst S, Koks CAM, Van Mello NM, Mol BWJ, Van der Veen F, Van Wely M, Fabregues F, Iraola A, Casals G, Creus M, Carmona F, Balasch J, Villarroel C, Lopez P, Merino P, Iniguez G, Codner E, Xu B, Cui Y, Gao L, Xue KAI, Li MEI, Zhang YUAN, Diao F, Ma X, Liu J, Leonhardt H, Gull B, Kishimoto K, Kataoka M, Stener-Victorin E, Hellstrom M, Cui Y, Wang X, Zhang Z, Ding G, HU X, Sha J, Zhou Z, Liu J, Liu J, Kyrou D, Kolibianakis EM, Fatemi HM, Camus M, Tournaye H, Tarlatzis BC, Devroey P, Davari F, Rashidi B, Rahmanpour Zanjani H, Al-Inany H, Youssef M, Aboulghar M, Broekmans F, Sterrenburg M, Smit J, Abousetta A, Van Dessel H, Van Leeuwen J, McGee EA, Bodri D, Guillen JJ, Rodriguez A, Trullenque M, Coll O, Vernaeve V, Snajderova M, Keslova P, Sedlacek P, Formankova R, Kotaska K, Stary J, Weghofer A, Dietrich W, Barad DH, Gleicher N, Rustamov O, Pemberton P, Roberts S, Smith A, Yates A, Patchava S, Nardo L, Toulis KA, Mintziori G, Goulis DG, Kintiraki E, Eukarpidis E, Mouratoglou SA, Pavlaki A, Stergianos S, Poulasouhidou M, Tzellos TG, Tarlatzis BC, Nasiri R, Ramezanzadeh F, Sarafraz Yazdi M, Baghrei M, Lee RKK, Wu FS, Lin S, Lin MH, Hwu YM. POSTER VIEWING SESSION - REPRODUCTIVE ENDOCRINOLOGY. Hum Reprod 2011. [DOI: 10.1093/humrep/26.s1.90] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Autin C, Gustin ML, Delvigne A, Rozee V, Seok H, Bak CW, Lyu SW, Song S, Lee WS, Cho JH, Yoon TK, Jindal UN, Verma S, Bala Y. SELECTED ORAL COMMUNICATION SESSION, SESSION 53: CROSS BORDER REPRODUCTIVE CARE & ART IN DEVELOPING COUNTRIES, Tuesday 5 July 2011 17:00 - 18:00. Hum Reprod 2011. [DOI: 10.1093/humrep/26.s1.53] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Kim JE, Seok H, Karki P, Lee JS, Shin SY, Cho B, Park IS. Comparative study of apoptosis induced by H(2)O(2) and NO: limitation of apoptosis induced by NO due to slower recovery of activity of NO-modified caspase. Protein Pept Lett 2006; 13:401-4. [PMID: 16712518 DOI: 10.2174/092986606775974401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Both H(2)O(2) and NO can act as apoptogens, triggering apoptosis in many cells. They are also well known inhibitors of caspases, essential enzymes in apoptosis. The differences between these two agents as apoptosis inducers and how caspases mediate apoptosis with these inhibitory agents is still unclear. Consistent with the previous reports, these two agents induced apoptosis accompanied by caspase activation with limitation of all apoptotic events for NO. It was found that NO-modified caspase-3 showed a slower recovery of its activity in the presence of the reducing agents compared to that of H(2)O(2) modification. This is one possible cause of the limited apoptosis in the case of NO.
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Affiliation(s)
- Ja-Eun Kim
- Research Center for Proteineous Materials (RCPM) and Department of Bio-Materials Engineering, Chosun University, Gwangju 501-759, Korea and Department of Chemistry, Yonsei University, Wonju, Korea
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Park IS, Moon HR, Seok H, Lee M. Rearrangement of tryptophan residues in caspase-3 active site upon activation. Biochim Biophys Acta 2004; 1700:5-9. [PMID: 15210119 DOI: 10.1016/j.bbapap.2004.03.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2003] [Revised: 03/11/2004] [Accepted: 03/11/2004] [Indexed: 11/20/2022]
Abstract
Caspase-3, one of the major apoptotic proteins, is a cysteine protease and exists as an inactive zymogen in healthy cells. In this study, the dynamic nature of the rearrangements of two tryptophan residues (Trp 206 and Trp 214) in the active sites of caspase-3 during the activation was analyzed by measuring the fluorescence lifetimes. Significant changes in the lifetime occurred upon activation by the specific cleavage. In addition, two mutant proteins that have only one tryptophan residue also showed the similar changes. These data indicate that the activation of caspase-3 resulted in the reorganization of both tryptophan residues.
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Affiliation(s)
- Il-Seon Park
- Research Center for Proteineous Materials and Department of Bio-Materials Engineering, Chosun University, Seosuk-Dong, Dong-Gu, Gwangju 501-759, South Korea.
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Seok H, Cho J, Cheon M, Park IS. Biochemical characterization of apoptotic cleavage of KH-type splicing regulatory protein (KSRP)/far upstream element-binding protein 2 (FBP2). Protein Pept Lett 2002; 9:511-9. [PMID: 12553859 DOI: 10.2174/0929866023408454] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Caspases, Asp-specific cysteine protease, cleave proteins upon apoptosis. To identify and characterize new caspase substrate in the nucleus, the proteome of the rat liver extracts was analyzed after the treatment with caspases. One of the identified proteins was KSRP/FBP2 that is preferentially cleaved by caspase-3 and 7 at two sites after Asp102 and Asp183. The second site was cleaved only in the protein produced in cells, but not in in vitro translated protein. These results indicate that more than the primary sequence may be important for the recognition by caspases.
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Affiliation(s)
- Heeyoung Seok
- Research Center for Proteineous Materials and Department of Bio-Materials Engineering, Chosun University, 375 Seosuk-Dong, Dong-Ku, Gwangju 501-759, Republic of Korea
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Lim KB, Na YM, Seok H, Choi HJ. EFFECT OF THERAPEUTIC EXERCISE IN PATIENTS WITH OSTEOARTHRITIS OF KNEE. Med Sci Sports Exerc 2001. [DOI: 10.1097/00005768-200105001-00219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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