1
|
Lee SH, Back JH, Joo HJ, Lim DS, Lee JE, Lee HJ. Simultaneous detection method for two cardiac disease protein biomarkers on a single chip modified with mixed aptamers using surface plasmon resonance. Talanta 2024; 267:125232. [PMID: 37806108 DOI: 10.1016/j.talanta.2023.125232] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 09/18/2023] [Accepted: 09/21/2023] [Indexed: 10/10/2023]
Abstract
A simultaneous detection method for two cardiac disease protein biomarkers present in serum samples on a single planar gold chip using surface plasmon resonance (SPR) is described. The detection of N-terminal pro-brain natriuretic peptide (NT-proBNP) and tumor necrosis factor α (TNF-α), which are known as acute myocardial infarction (AMI) biomarkers, with predetermined clinically relevant concentrations was performed using mixed aptamers specific to each protein tethered on a single gold surface. After the binding of NT-proBNP and/or TNF-α to the mixed aptamers, an antibody specific to each target protein was injected to form a surface sandwich complex to improve selectivity. In order to adjust the dynamic ranges in the known clinically relevant concentration significantly different for NT-proBNP (0.13-0.24 nM) and TNF-α (0.5-3 pM), the surface density ratios of the corresponding pair of aptamer and antibody were first systematically determined, which were the 1:1 mixed aptamer chip with 40 nM anti-NT-proBNP and 100 nM anti-TNF-α. This allowed to establish the distinct dynamic ranges of 0.05-0.5 nM for NT-proBNP and 0.1-5 pM for TNF-α in a buffer, along with detection and quantification limits of 0.03 and 0.19 nM for NT-proBNP and 0.06 and 0.21 pM for TNF-α, respectively. The changes in refractive unit (RU) values observed when exposing both proteins at different concentrations alongside the corresponding fixed concentration of antibodies onto the 1:1 mixed aptamer chip were then correlated to the sum of RU values measured when using the injection of individual protein for evaluating each protein concentration. With a complete characterization of the simultaneous quantification of two protein concentrations in the buffer, the mixed aptamer chip was finally employed for direct measurements of NT-proBNP and TNF-α concentrations in undiluted serum samples from healthy controls and AMI patients. The results of simultaneous SPR measurements for the two proteins in the serum samples were further compared to the individual protein concentration results using an enzyme-linked immunosorbent assay.
Collapse
Affiliation(s)
- Sang Hyuk Lee
- Department of Chemistry and Green-Nano Materials Research Center, Kyungpook National University, 80 Daehakro, Buk-gu, Daegu, 41566, Republic of Korea
| | - Ji Hyun Back
- Chemical & Biological integrative Research Center, Biomedical Research Institute, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea; Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, 02841, Republic of Korea
| | - Hyung Joon Joo
- Department of Cardiology, Cardiovascular Center, College of Medicine, Korea University, Seoul, 02841, Republic of Korea
| | - Do-Sun Lim
- Department of Cardiology, Cardiovascular Center, College of Medicine, Korea University, Seoul, 02841, Republic of Korea
| | - Ji Eun Lee
- Chemical & Biological integrative Research Center, Biomedical Research Institute, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Hye Jin Lee
- Department of Chemistry and Green-Nano Materials Research Center, Kyungpook National University, 80 Daehakro, Buk-gu, Daegu, 41566, Republic of Korea.
| |
Collapse
|
2
|
Back JH, Kim SY, Gu MB, Kim HJ, Lee KN, Lee JE, Park KH. Proteomic analysis of plasma to identify novel biomarkers for intra-amniotic infection and/or inflammation in preterm premature rupture of membranes. Sci Rep 2023; 13:5658. [PMID: 37024561 PMCID: PMC10079851 DOI: 10.1038/s41598-023-32884-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 04/04/2023] [Indexed: 04/08/2023] Open
Abstract
To identify potential plasma biomarkers associated with microbial invasion of the amniotic cavity (MIAC) and/or intraamniotic inflammation (IAI) in women with preterm premature rupture of membranes (PPROM). This retrospective cohort study included 182 singleton pregnant women with PPROM (23-33 weeks) who underwent amniocentesis. Plasma samples; all subjects were chosen from these participants and were analyzed using label-free liquid chromatography-tandem mass spectrometry for proteome profiling using a nested case-control study design (cases with MIAC/IAI vs. non-MIAC/IAI controls [n = 9 each]). Three identified target molecules for MIAC/IAI were further verified by ELISA in the study cohort (n = 182). Shotgun proteomic analysis revealed 17 differentially expressed proteins (P < 0.05) in the plasma of MIAC/IAI cases. In particular, the levels of FCGR3A and haptoglobin, but not LRP1, were found to be increased in the plasma of patients with MIAC, IAI, and both MIAC/IAI compared with those without these conditions. Moreover, these differences remained significant after adjusting for gestational age at sampling. The area under the curves of plasma FCGR3A and haptoglobin ranged within 0.59-0.65 with respect to each of the three outcome measures. Plasma FCGR3A and haptoglobin were identified as potential independent biomarkers for less-invasively detecting MIAC/IAI in women with PPROM.
Collapse
Affiliation(s)
- Ji Hyun Back
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, 02841, Korea
- Biomedical Research Division, Chemical and Biological Integrative Research Center, Korea Institute of Science and Technology, Seoul, 02792, Korea
| | - So Yeon Kim
- Department of Obstetrics and Gynecology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Man Bock Gu
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, 02841, Korea
| | - Hyeon Ji Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, 82, Gumi-Ro 173 Beon-Gil, Bundang-Gu, Seongnam, 463-707, Korea
| | - Kyong-No Lee
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, 82, Gumi-Ro 173 Beon-Gil, Bundang-Gu, Seongnam, 463-707, Korea
| | - Ji Eun Lee
- Biomedical Research Division, Chemical and Biological Integrative Research Center, Korea Institute of Science and Technology, Seoul, 02792, Korea.
| | - Kyo Hoon Park
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, 82, Gumi-Ro 173 Beon-Gil, Bundang-Gu, Seongnam, 463-707, Korea.
| |
Collapse
|
3
|
Kim H, Park HJ, Chang HW, Back JH, Lee SJ, Park YE, Kim EH, Hong Y, Kwak G, Kwon IC, Lee JE, Lee YS, Kim SY, Yang Y, Kim SH. Exosome-guided direct reprogramming of tumor-associated macrophages from protumorigenic to antitumorigenic to fight cancer. Bioact Mater 2022; 25:527-540. [PMID: 37056267 PMCID: PMC10087080 DOI: 10.1016/j.bioactmat.2022.07.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 06/29/2022] [Accepted: 07/19/2022] [Indexed: 11/02/2022] Open
Abstract
Highly immunosuppressive tumor microenvironment containing various protumoral immune cells accelerates malignant transformation and treatment resistance. In particular, tumor-associated macrophages (TAMs), as the predominant infiltrated immune cells in a tumor, play a pivotal role in regulating the immunosuppressive tumor microenvironment. As a potential therapeutic strategy to counteract TAMs, here we explore an exosome-guided in situ direct reprogramming of tumor-supportive M2-polarized TAMs into tumor-attacking M1-type macrophages. Exosomes derived from M1-type macrophages (M1-Exo) promote a phenotypic switch from anti-inflammatory M2-like TAMs toward pro-inflammatory M1-type macrophages with high conversion efficiency. Reprogrammed M1 macrophages possessing protein-expression profiles similar to those of classically activated M1 macrophages display significantly increased phagocytic function and robust cross-presentation ability, potentiating antitumor immunity surrounding the tumor. Strikingly, these M1-Exo also lead to the conversion of human patient-derived TAMs into M1-like macrophages that highly express MHC class II, offering the clinical potential of autologous and allogeneic exosome-guided direct TAM reprogramming for arming macrophages to join the fight against cancer.
Collapse
|
4
|
Kim KR, Kim J, Back JH, Lee JE, Ahn DR. Cholesterol-Mediated Seeding of Protein Corona on DNA Nanostructures for Targeted Delivery of Oligonucleotide Therapeutics to Treat Liver Fibrosis. ACS Nano 2022; 16:7331-7343. [PMID: 35500062 DOI: 10.1021/acsnano.1c08508] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The protein corona is a protein layer formed on the surface of nanoparticles administered in vivo and considerably affects the in vivo fate of nanoparticles. Although it is challenging to control protein adsorption on nanoparticles precisely, the protein corona may be harnessed to develop a targeted drug delivery system if the nanoparticles are decorated with a ligand with enhanced affinity to target tissue- and cell-homing proteins. Here, we prepared a DNA tetrahedron with trivalent cholesterol conjugation (Chol3-Td) that can induce enhanced interaction with lipoproteins in serum, which in situ generates the lipoprotein-associated protein corona on a DNA nanostructure favorable for cells abundantly expressing lipoprotein receptors in the liver, such as hepatocytes in healthy mice and myofibroblasts in fibrotic mice. Chol3-Td was further adopted for liver delivery of antisense oligonucleotide (ASO) targeting TGF-β1 mRNA to treat liver fibrosis in a mouse model. The potency of ASO@Chol3-Td was comparable to that of ASO conjugated with the clinically approved liver-targeting ligand, trivalent N-acetylgalactosamine (GalNAc3), demonstrating the potential of Chol3-Td as a targeted delivery system for oligonucleotide therapeutics. This study suggests that controlled seeding of the protein corona on nanomaterials can provide a way to steer nanoparticles into the target area.
Collapse
Affiliation(s)
- Kyoung-Ran Kim
- Center for Theragnosis, Biomedical Research Division, Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Korea
| | - Junghyun Kim
- Center for Theragnosis, Biomedical Research Division, Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Korea
| | - Ji Hyun Back
- Center for Theragnosis, Biomedical Research Division, Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Korea
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Korea
| | - Ji Eun Lee
- Center for Theragnosis, Biomedical Research Division, Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Korea
| | - Dae-Ro Ahn
- Center for Theragnosis, Biomedical Research Division, Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Korea
- Division of Biomedical Science and Technology, KIST School, University of Science and Technology (UST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Korea
| |
Collapse
|
5
|
Kim H, Back JH, Han G, Lee SJ, Park YE, Gu MB, Yang Y, Lee JE, Kim SH. Extracellular vesicle-guided in situ reprogramming of synovial macrophages for the treatment of rheumatoid arthritis. Biomaterials 2022; 286:121578. [PMID: 35594838 DOI: 10.1016/j.biomaterials.2022.121578] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 05/02/2022] [Accepted: 05/11/2022] [Indexed: 12/01/2022]
Abstract
Activation state of synovial macrophages is significantly correlated with disease activity and severity of rheumatoid arthritis (RA) and provides valuable clues for RA treatment. Classically activated M1 macrophages in inflamed synovial joints secrete high levels of pro-inflammatory cytokines and chemokines, resulting in bone erosion and cartilage degradation. Herein, we propose extracellular vesicle (EV)-guided in situ macrophage reprogramming toward anti-inflammatory M2 macrophages as a novel RA treatment modality based on the immunotherapeutic concept of reestablishing M1-M2 macrophage equilibrium in synovial tissue. M2 macrophage-derived EVs (M2-EVs) were able to convert activated M1 into reprogrammed M2 (RM2) macrophages with extremely high efficiency (>90%), producing a distinct protein expression pattern characteristic of anti-inflammatory M2 macrophages. In particular, M2-EVs were enriched for proteins known to be involved in the generation and migration of M2 macrophages as well as macrophage reprogramming factors, allowing for rapid and efficient driving of macrophage polarization toward M2 phenotype. After administration of M2-EVs into the joint of a collagen-induced arthritis mouse model, the synovial macrophage polarization was significantly shifted from M1 to M2 phenotype, a process that benefited greatly from the long residence time (>3 days) of M2-EVs in the joint. This superb in situ macrophage-reprogramming ability of EVs resulted in decreased joint swelling, arthritic index score and synovial inflammation, with corresponding reductions in bone erosion and articular cartilage damage and no systemic toxicity. The anti-RA effects of M2-EVs were comparable to those of the conventional disease-modifying antirheumatic drug, Methotrexate, which causes a range of toxic adverse effects, including gastrointestinal mucosal injury. Overall, our EV-guided reprogramming strategy for in situ tuning of macrophage responses holds great promise for the development of anti-inflammatory therapeutics for the treatment of various inflammatory diseases in addition to RA.
Collapse
Affiliation(s)
- Hyosuk Kim
- Medicinal Materials Research Center, Biomedical Research Institute, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Ji Hyun Back
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, 02841, Republic of Korea; Chemical & Biological integrative Research Center, Biomedical Research Institute, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Geonhee Han
- Medicinal Materials Research Center, Biomedical Research Institute, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea; KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, 02841, Republic of Korea
| | - Su Jin Lee
- Chemical & Biological integrative Research Center, Biomedical Research Institute, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Yae Eun Park
- Chemical & Biological integrative Research Center, Biomedical Research Institute, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Man Bock Gu
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, 02841, Republic of Korea
| | - Yoosoo Yang
- Medicinal Materials Research Center, Biomedical Research Institute, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Ji Eun Lee
- Chemical & Biological integrative Research Center, Biomedical Research Institute, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea.
| | - Sun Hwa Kim
- Medicinal Materials Research Center, Biomedical Research Institute, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea.
| |
Collapse
|
6
|
Jang JH, Yoo SY, Park YE, Ji MJ, Park HM, Back JH, Lee JY, Kim DJ, Lee JE, Choi JS. The Kynurenine Pathway and Mediating Role of Stress in Addictive Disorders: A Focus on Alcohol Use Disorder and Internet Gaming Disorder. Front Pharmacol 2022; 13:865576. [PMID: 35479326 PMCID: PMC9037037 DOI: 10.3389/fphar.2022.865576] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Accepted: 03/21/2022] [Indexed: 11/13/2022] Open
Abstract
Stress plays an important role in the pathophysiology of addictive disorders. The kynurenine (KYN) pathway involved in neuroimmune and cognitive functions is activated under stress. However, the neuroimmunological–neurocognitive mechanisms in the role of stress in addictive disorders are unclear still now. Ninety-nine young adults aged 18–35 years [alcohol use disorder (AUD), N = 30; Internet gaming disorder (IGD), N = 34; healthy controls (HCs), N = 35] participated in this study. Stress levels, resilience, addiction severity, and neurocognitive functions were evaluated, and serum levels of tryptophan (TRP), 5-hydroxytryptamine (5-HT), KYN, and kynurenine acid (KYNA) were determined using liquid chromatography coupled with tandem mass spectrometry through blood samples. Both addictive disorder groups showed higher levels of stress, lower resilience, and impaired executive functions compared to the HC group. Importantly, the AUD group revealed significantly increased KYN levels and KYN/TRP ratios, as well as decreased KYNA levels and KYNA/KYN ratios compared to HCs (p < 0.001, p < 0.001, p = 0.033, and p < 0.001, respectively). The IGD group showed KYN levels and KYNA/KYN ratios intermediate between those of the AUD group and HCs. Furthermore, in the AUD group, the mediating effect of AUD on KYN through stress level was moderated by resilience [index of moderated mediation = −0.557, boot S.E = 0.331, BCa CI (−1.349, −0.081)]. Stress may induce an imbalance in downstream of KYN pathway metabolites, and the KYN/TRP ratio may play as a neuromediator between stress and behavioral changes in both addictive disorders. This study suggests that regulation of the KYN pathway is critical in the pathophysiology of addictive disorders and it may serve as an important target for future treatment modalities.
Collapse
Affiliation(s)
- Joon Hwan Jang
- Department of Psychiatry, Seoul National University Health Service Center, Seoul, South Korea.,Department of Human Systems Medicine, Seoul National University College of Medicine, Seoul, South Korea
| | - So Young Yoo
- Department of Psychiatry, SMG-SNU Boramae Medical Center, Seoul, South Korea
| | - Yae Eun Park
- Center for Theragnosis, Biomedical Research Division, Korea Institute of Science and Technology, Seoul, South Korea
| | - Mi-Jung Ji
- Advanced Analysis Center, Research Resources Division, Korea Institute of Science and Technology, Seoul, South Korea
| | - Hyun-Mee Park
- Advanced Analysis Center, Research Resources Division, Korea Institute of Science and Technology, Seoul, South Korea
| | - Ji Hyun Back
- Center for Theragnosis, Biomedical Research Division, Korea Institute of Science and Technology, Seoul, South Korea.,Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, South Korea
| | - Ji Yoon Lee
- Department of Psychiatry, Samsung Medical Center, Seoul, South Korea
| | - Dai Jin Kim
- Department of Psychiatry, Seoul St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, South Korea
| | - Ji Eun Lee
- Center for Theragnosis, Biomedical Research Division, Korea Institute of Science and Technology, Seoul, South Korea
| | - Jung-Seok Choi
- Department of Psychiatry, Samsung Medical Center, Seoul, South Korea
| |
Collapse
|
7
|
Shin J, Kwon Y, Lee S, Na S, Hong EY, Ju S, Jung HG, Kaushal P, Shin S, Back JH, Choi SY, Kim EH, Lee SJ, Park YE, Ahn HS, Ahn Y, Kabir MH, Park SJ, Yang WS, Yeom J, Bang OY, Ha CW, Lee JW, Kang UB, Kim HJ, Park KS, Lee JE, Lee JE, Kim JY, Kim KP, Kim Y, Hirano H, Yi EC, Cho JY, Paek E, Lee C. Common Repository of FBS Proteins (cRFP) To Be Added to a Search Database for Mass Spectrometric Analysis of Cell Secretome. J Proteome Res 2019; 18:3800-3806. [PMID: 31475827 DOI: 10.1021/acs.jproteome.9b00475] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
We propose to use cRFP (common Repository of FBS Proteins) in the MS (mass spectrometry) raw data search of cell secretomes. cRFP is a small supplementary sequence list of highly abundant fetal bovine serum proteins added to the reference database in use. The aim behind using cRFP is to prevent the contaminant FBS proteins from being misidentified as other proteins in the reference database, just as we would use cRAP (common Repository of Adventitious Proteins) to prevent contaminant proteins present either by accident or through unavoidable contacts from being misidentified as other proteins. We expect it to be widely used in experiments where the proteins are obtained from serum-free media after thorough washing of the cells, or from a complex media such as SILAC, or from extracellular vesicles directly.
Collapse
Affiliation(s)
- Jihye Shin
- Center for Theragnosis, Korea Institute of Science and Technology , Seoul 02792 , Korea.,Advanced Medical Research Center , Yokohama City University , Kanazawa , Yokohama 236-0004 , Japan
| | - Yumi Kwon
- Center for Theragnosis, Korea Institute of Science and Technology , Seoul 02792 , Korea.,Department of Life Science and Research Institute for Natural Sciences , Hanyang University , Seoul 04763 , Korea
| | - Seonjeong Lee
- Center for Theragnosis, Korea Institute of Science and Technology , Seoul 02792 , Korea.,Division of Bio-Medical Science & Technology, KIST School , Korea University of Science and Technology , Seoul 02792 , Korea
| | - Seungjin Na
- Department of Computer Science , Hanyang University , Seoul 04763 , Korea
| | - Eun Young Hong
- Center for Theragnosis, Korea Institute of Science and Technology , Seoul 02792 , Korea
| | - Shinyeong Ju
- Center for Theragnosis, Korea Institute of Science and Technology , Seoul 02792 , Korea.,Department of Life Science and Research Institute for Natural Sciences , Hanyang University , Seoul 04763 , Korea
| | - Hyun-Gyo Jung
- Center for Theragnosis, Korea Institute of Science and Technology , Seoul 02792 , Korea.,Division of Bio-Medical Science & Technology, KIST School , Korea University of Science and Technology , Seoul 02792 , Korea
| | - Prashant Kaushal
- Center for Theragnosis, Korea Institute of Science and Technology , Seoul 02792 , Korea.,Division of Bio-Medical Science & Technology, KIST School , Korea University of Science and Technology , Seoul 02792 , Korea
| | - Sungho Shin
- Center for Theragnosis, Korea Institute of Science and Technology , Seoul 02792 , Korea.,KHU-KIST Department of Converging Science and Technology , Kyung Hee University , Seoul 02447 , Korea
| | - Ji Hyun Back
- Center for Theragnosis, Korea Institute of Science and Technology , Seoul 02792 , Korea.,Department of Biotechnology, College of Life Sciences and Biotechnology , Korea University , Seoul 02841 , Korea
| | - Seon Young Choi
- Department of Health Sciences and Technology, SAIHST , Sungkyunkwan University , Seoul 06351 , Korea.,Stem Cell & Regenerative Medicine Institute , Samsung Medical Center , Seoul 06351 , Korea
| | - Eun Hee Kim
- Stem Cell & Regenerative Medicine Institute , Samsung Medical Center , Seoul 06351 , Korea
| | - Su Jin Lee
- Center for Theragnosis, Korea Institute of Science and Technology , Seoul 02792 , Korea.,Department of Life Science, College of Natural Sciences , Ewha Womans University , Seoul 03760 , Korea
| | - Yae Eun Park
- Center for Theragnosis, Korea Institute of Science and Technology , Seoul 02792 , Korea.,Department of Biochemistry, College of Life Science and Biotechnology , Yonsei University , Seoul 03722 , Korea
| | - Hee-Sung Ahn
- Asan Institute for Life Sciences , Asan Medical Center , Seoul 05505 , Korea
| | - Younghee Ahn
- Departments of Pediatrics, Clinical Neurosciences, Physiology & Pharmacology, Alberta Children's Hospital Research Institute, Cumming School of Medicine , University of Calgary , Calgary , Alberta T2N 1N4 , Canada
| | | | | | - Won Suk Yang
- R&D Center for Clinical Mass Spectrometry , Seegene Medical Foundation , Seoul 04805 , Korea
| | - Jeonghun Yeom
- Toxicological Laboratory, Department of Emergency Medicine , Asan Medical Center , Seoul 05505 , Korea
| | - Oh Young Bang
- Departments of Neurology, Samsung Medical Center , Sungkyunkwan University , Seoul 06351 , Korea
| | - Chul-Won Ha
- Department of Health Sciences and Technology, SAIHST , Sungkyunkwan University , Seoul 06351 , Korea.,Stem Cell & Regenerative Medicine Institute , Samsung Medical Center , Seoul 06351 , Korea.,Department of Orthopedic Surgery, Samsung Medical Center , Sungkyunkwan University School of Medicine , Seoul 06351 , Korea
| | - Jin-Won Lee
- Department of Life Science and Research Institute for Natural Sciences , Hanyang University , Seoul 04763 , Korea
| | - Un-Beom Kang
- Core Protein Resources Center , Daegu Gyeongbuk Institute of Science and Technology , Daegu 42988 , Korea
| | - Hye-Jung Kim
- New Drug Development Center , KBIO Osong Medical Innovation Foundation , Cheongju-si , Chungbuk 28160 , Korea
| | - Kang-Sik Park
- KHU-KIST Department of Converging Science and Technology , Kyung Hee University , Seoul 02447 , Korea.,Department of Physiology, School of Medicine , Kyung Hee Univeristy , Seoul 02447 , Korea
| | - J Eugene Lee
- Center for Bioanalysis , Korea Research Institute of Standards and Science , Daejeon 34113 , Korea
| | - Ji Eun Lee
- Center for Theragnosis, Korea Institute of Science and Technology , Seoul 02792 , Korea
| | - Jin Young Kim
- Biomedical Omics Research Group , Korea Basic Research Institute , Ochang , Chungbuk 28119 , Korea
| | - Kwang Pyo Kim
- Department of Applied Chemistry, Institute of Natural Science, Global Center for Pharmaceutical Ingredient Materials , Kyung Hee University , Yongin , Gyeonggi 17104 , Korea.,Department of Biomedical Science and Technology, Kyung Hee Medical Science Research Institute , Kyung Hee University , Seoul 02453 , Korea
| | - Youngsoo Kim
- Department of Biomedical Engineering , Seoul National University College of Medicine , Seoul 03080 , Korea
| | - Hisashi Hirano
- Advanced Medical Research Center , Yokohama City University , Kanazawa , Yokohama 236-0004 , Japan
| | - Eugene C Yi
- Department of Molecular Medicine and Biopharmaceutical Sciences , Seoul National University , Seoul 03080 , Korea
| | - Je-Yoel Cho
- Department of Biochemistry, BK21 Plus and Research Institute for Veterinary Science, School of Veterinary Medicine , Seoul National University , Seoul 08826 , Korea
| | - Eunok Paek
- Department of Computer Science , Hanyang University , Seoul 04763 , Korea
| | - Cheolju Lee
- Center for Theragnosis, Korea Institute of Science and Technology , Seoul 02792 , Korea.,Division of Bio-Medical Science & Technology, KIST School , Korea University of Science and Technology , Seoul 02792 , Korea.,KHU-KIST Department of Converging Science and Technology , Kyung Hee University , Seoul 02447 , Korea
| |
Collapse
|
8
|
Kim SC, Han DJ, Kim IH, Woo KO, We YM, Kang SY, Back JH, Kim YH, Kim JH, Lim DG. Comparative study on biologic and immunologic characteristics of the pancreas islet cell between 24 degrees C and 37 degrees C culture in the rat. Transplant Proc 2006; 37:3472-5. [PMID: 16298632 DOI: 10.1016/j.transproceed.2005.09.081] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [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: 11/17/2022]
Abstract
The aim of this study was to investigate the effect of culture at 24 degrees C on cell viability, cellular function, immunogenicity, and cytokine profiles of rat pancreatic islets. Pancreatic islets were isolated from Lewis rats and cultured at either 24 degrees C or 37 degrees C for 14 days. Islet recovery was counted as islet equivalents; islet viability was examined with fluorescent vital staining. Islet function was measured with a glucose stimulation test. Annexin V, and MHC class I and II expression were measured using flow cytometric assay for apoptosis and immunogenicity, respectively. Lymphocyte cell proliferation was examined with WST-1 proliferation assay. Cytokine profiles were analyzed with quantitative real time RT-PCR. All these parameters were measured on 1, 3, 5, 7 and 14 culture days after islet isolation. Islet recovery was higher in islets cultured at 24 degrees C than 37 degrees C without a change in viability. Insulin secretion after glucose stimulation was more effective in 24 degrees C culture conditions. Decreased apoptotic cell death was demonstrated in 24 degrees C cultured islets. Both MHC class I and II expression on islets and lymphocyte proliferation upon coculture with islets were less prominent in 24 degrees C cultured islets. TNF-alpha expression was lower in islets cultured at 24 degrees C than in islets cultured at 37 degrees C. Both IL-1beta and IL-10 cytokine expressions were similar under both culture conditions. This study demonstrated that cell recovery and function are increased in islets cultured at 24 degrees C than those at 37 degrees C with decreased antigenicity and proinflammatory cytokine expression.
Collapse
Affiliation(s)
- S C Kim
- Department of Surgery, Ulsan University College of Medicine and Asan Medical Center, 388-1 Poongnab-dong, Songpa-gu, Seoul 138-736, Korea.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
9
|
Kim SC, Han DJ, Kang CH, We YM, Back JH, Kim YH, Kim JH, Lim DG. Analysis on Donor and Isolation-Related Factors of Successful Isolation of Human Islet of Langerhans From Human Cadaveric Donors. Transplant Proc 2005; 37:3402-3. [PMID: 16298607 DOI: 10.1016/j.transproceed.2005.09.055] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [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: 11/23/2022]
Abstract
We analyzed the preexisting donor factors and isolation variables that affected isolation of human islets of Langerhans. Sixty-nine pancreata from cadaveric donors were analyzed for donor factors of age, gender, body mass index, cause of death as well as graft factors of cold ischemia time, pancreas status, distensibility during intraductal collagenase distension and time of collagenase expansion and digestion. Islet isolations that recovered >100,000 IEQ (n = 53) were compared to those generating less than 100,000 IEQ (n = 16) to analyze the factors affecting islet yield during donor harvest and isolation procedures. The mean islet recovery was 216.0 x 10(3) (IEQ) or 2840 (IEQ) per gram of pancreas. Mean purity was 54%. The success rate of islet isolation was 76%. Mean age was 31 years, and mean cold ischemia time was 6.9 hours. In univariate analysis, the status of the pancreas was the only significant factor for successful isolation, and gender, time of collagenase expansion and digestion were marginal factors. In stepwise multivariate logistic regression analysis of donor and isolation-related factors, donor gender, pancreas status and digestion time were significant factors. During the same period we performed three cases of clinical islet allotransplantation and one autotransplantation. This study confirmed that the same donor factors and variables in the isolation process can affect the ability to obtain successful human islet isolation. Enough experience and pertinent review of donor and isolation factors can make islet isolation consistent, supporting clinical islet transplantation without unnecessary cost.
Collapse
Affiliation(s)
- S C Kim
- Department of Surgery, Ulsan University College of Medicine and Asan Medical Center, 388-1 Poongnab-dong, Songpa-gu, Seoul 138-736, Korea.
| | | | | | | | | | | | | | | |
Collapse
|
10
|
Abstract
The aim of this study was to investigate the results of 20 consecutive porcine islet isolations using a new enzyme Liberase PI. Twenty pancreata were procured for islet isolation, which was performed using modified Ricordi's method with Liberase PI. Quantitation of islet viability staining, insulin stimulation assay, intracellular insulin content/DNA, and in vivo transplantability into diabetic nude mice were examined for quality control. The results were compared between a high-yield group (>2500 IEQ/g pancreas) and a low-yield group (<2500 IEQ/g pancreas). Sufficient amount of purified islets (3000 IEQ/g pancreas) were obtained using the new brand enzyme Liberase PI. These islets showed good quality in structure and functions, which were demonstrated by in vitro and in vivo standard assays. Isolation index (IEQ/number) of the low-yield group was lower than that of high-yield group (0.75 vs 0.86), which means more fragmentation of islets in the low-yield group. There were no differences in function between the two groups. In conclusion, we obtained sufficient numbers of viable, functional islets from porcine pancreas using a new brand enzyme Liberase PI and low-temperature isolation technique. However, overdigestion of islets during the isolation remains to be overcome. Advance in porcine islet isolation technique will in the future make the porcine islet xenotransplantation a reality for the cure of diabetes mellitus.
Collapse
Affiliation(s)
- S C Kim
- Department of Surgery, Ulsan University College of Medicine and Asan Medical Center, Seoul, Korea.
| | | | | | | | | | | | | |
Collapse
|
11
|
Chung JH, Back JH, Park YI, Han YS. Biochemical characterization of a novel hypoxanthine/xanthine dNTP pyrophosphatase from Methanococcus jannaschii. Nucleic Acids Res 2001; 29:3099-107. [PMID: 11452035 PMCID: PMC55802 DOI: 10.1093/nar/29.14.3099] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [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: 02/01/2023] Open
Abstract
A novel dNTP pyrophosphatase, Mj0226 from Methanococcus jannaschii, which catalyzes the hydrolysis of nucleoside triphosphates to the monophosphate and PPi, has been characterized. Mj0226 protein catalyzes hydrolysis of two major substrates, dITP and XTP, suggesting that the 6-keto group of hypoxanthine and xanthine is critical for interaction with the protein. Under optimal reaction conditions the k(ca)(t) /K(m) value for these substrates was approximately 10 000 times that with dATP. Neither endonuclease nor 3'-exonuclease activities were detected in this protein. Interestingly, dITP was efficiently inserted opposite a dC residue in a DNA template and four dNTPs were also incorporated opposite a hypoxanthine residue in template DNA by DNA polymerase I. Two protein homologs of Mj0226 from Escherichia coli and Archaeoglobus fulgidus were also cloned and purified. These have catalytic activities similar to Mj0226 protein under optimal conditions. The implications of these results have significance in understanding how homologous proteins, including Mj0226, act biologically in many organisms. It seems likely that Mj0226 and its homologs have a major role in preventing mutations caused by incorporation of dITP and XTP formed spontaneously in the nucleotide pool into DNA. This report is the first identification and functional characterization of an enzyme hydrolyzing non-canonical nucleotides, dITP and XTP.
Collapse
Affiliation(s)
- J H Chung
- Structural Biology Research Center, Korea Institute of Science and Technology, PO Box 131, Cheongryang, Seoul, Korea and The Graduate School of Biotechnology, Korea University, Seoul 136-701, Korea
| | | | | | | |
Collapse
|