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Edwards DN, Wang S, Song W, Kim LC, Ngwa VM, Hwang Y, Ess KC, Boothby MR, Chen J. Regulation of fatty acid delivery to metastases by tumor endothelium. bioRxiv 2024:2024.04.02.587724. [PMID: 38617241 PMCID: PMC11014634 DOI: 10.1101/2024.04.02.587724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
Tumor metastasis, the main cause of death in cancer patients, requires outgrowth of tumor cells after their dissemination and residence in microscopic niches. Nutrient sufficiency is a determinant of such outgrowth1. Fatty acids (FA) can be metabolized by cancer cells for their energetic and anabolic needs but impair the cytotoxicity of T cells in the tumor microenvironment (TME)2,3, thereby supporting metastatic progression. However, despite the important role of FA in metastatic outgrowth, the regulation of intratumoral FA is poorly understood. In this report, we show that tumor endothelium actively promotes tumor growth and restricts anti-tumor cytolysis by transferring FA into developing metastatic tumors. This process uses transendothelial fatty acid transport via endosome cargo trafficking in a mechanism that requires mTORC1 activity. Thus, tumor burden was significantly reduced upon endothelial-specific targeted deletion of Raptor, a unique component of the mTORC1 complex (RptorECKO). In vivo trafficking of a fluorescent palmitic acid analog to tumor cells and T cells was reduced in RptorECKO lung metastatic tumors, which correlated with improved markers of T cell cytotoxicity. Combination of anti-PD1 with RAD001/everolimus, at a low dose that selectively inhibits mTORC1 in endothelial cells4, impaired FA uptake in T cells and reduced metastatic disease, corresponding to improved anti-tumor immunity. These findings describe a novel mechanism of transendothelial fatty acid transfer into the TME during metastatic outgrowth and highlight a target for future development of therapeutic strategies.
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Affiliation(s)
- Deanna N. Edwards
- Vanderbilt University Medical Center, Department of Medicine, Division of Rheumatology and Immunology, Nashville, TN, USA
- Vanderbilt-Ingram Cancer Center, Nashville, TN, USA
| | - Shan Wang
- Vanderbilt University Medical Center, Department of Medicine, Division of Rheumatology and Immunology, Nashville, TN, USA
| | - Wenqiang Song
- Vanderbilt University Medical Center, Department of Medicine, Division of Rheumatology and Immunology, Nashville, TN, USA
- Vanderbilt University Medical Center, Department of Medicine, Division of Epidemiology, Nashville, TN, USA
- Vanderbilt University Medical Center, Department of Pathology, Microbiology and Immunology, Nashville, TN, USA
| | - Laura C. Kim
- Vanderbilt University, Program in Cancer Biology, Nashville, TN, USA
- Abramson Family Cancer Research Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Verra M. Ngwa
- Vanderbilt University Medical Center, Department of Medicine, Division of Rheumatology and Immunology, Nashville, TN, USA
| | - Yoonha Hwang
- Vanderbilt University Medical Center, Department of Medicine, Division of Rheumatology and Immunology, Nashville, TN, USA
| | - Kevin C. Ess
- University of Colorado Anschutz Medical Campus, Department of Pediatrics, Denver, CO, USA
- Vanderbilt University Medical Center, Department of Pediatrics, Nashville, TN, USA
| | - Mark R. Boothby
- Vanderbilt University Medical Center, Department of Medicine, Division of Rheumatology and Immunology, Nashville, TN, USA
- Vanderbilt University Medical Center, Department of Pathology, Microbiology and Immunology, Nashville, TN, USA
- Vanderbilt University, Program in Cancer Biology, Nashville, TN, USA
- Vanderbilt Institute for Infection, Immunology and Inflammation, Nashville, TN, USA
| | - Jin Chen
- Vanderbilt University Medical Center, Department of Medicine, Division of Rheumatology and Immunology, Nashville, TN, USA
- Vanderbilt-Ingram Cancer Center, Nashville, TN, USA
- Vanderbilt University, Program in Cancer Biology, Nashville, TN, USA
- Vanderbilt Institute for Infection, Immunology and Inflammation, Nashville, TN, USA
- Vanderbilt University, Department of Cell and Developmental Biology, Nashville, TN, USA
- Veterans Affairs Medical Center, Tennessee Valley Healthcare System, Nashville, TN, USA
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2
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Choi D, Park H, Hwang Y, Shin J, Park H, Han S, Ham Y, Na K, Lee K, Chang Y. WCN23-1003 Deletion of PTP4A1 ameliorate renal fibrosis induced by UUO in mice. Kidney Int Rep 2023. [DOI: 10.1016/j.ekir.2023.02.508] [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: 03/22/2023] Open
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3
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Hwang Y, Jheon S, Lee J. PP01.19 Volatile Organic Compound Biomarkers Identification for Prediction of Lung Cancer Based on Exhaled Breath Analysis. J Thorac Oncol 2023. [DOI: 10.1016/j.jtho.2022.09.045] [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: 01/29/2023]
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4
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Zhao J, Jung S, Li X, Li L, Kasinath V, Zhang H, Movahedi SN, Mardini A, Sabiu G, Hwang Y, Saxena V, Song Y, Ma B, Acton SE, Kim P, Madsen JC, Sage PT, Tullius SG, Tsokos GC, Bromberg JS, Abdi R. Delivery of costimulatory blockade to lymph nodes promotes transplant acceptance in mice. J Clin Invest 2022; 132:e159672. [PMID: 36519543 PMCID: PMC9754003 DOI: 10.1172/jci159672] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 02/25/2022] [Accepted: 10/11/2022] [Indexed: 12/15/2022] Open
Abstract
The lymph node (LN) is the primary site of alloimmunity activation and regulation during transplantation. Here, we investigated how fibroblastic reticular cells (FRCs) facilitate the tolerance induced by anti-CD40L in a murine model of heart transplantation. We found that both the absence of LNs and FRC depletion abrogated the effect of anti-CD40L in prolonging murine heart allograft survival. Depletion of FRCs impaired homing of T cells across the high endothelial venules (HEVs) and promoted formation of alloreactive T cells in the LNs in heart-transplanted mice treated with anti-CD40L. Single-cell RNA sequencing of the LNs showed that anti-CD40L promotes a Madcam1+ FRC subset. FRCs also promoted the formation of regulatory T cells (Tregs) in vitro. Nanoparticles (NPs) containing anti-CD40L were selectively delivered to the LNs by coating them with MECA-79, which binds to peripheral node addressin (PNAd) glycoproteins expressed exclusively by HEVs. Treatment with these MECA-79-anti-CD40L-NPs markedly delayed the onset of heart allograft rejection and increased the presence of Tregs. Finally, combined MECA-79-anti-CD40L-NPs and rapamycin treatment resulted in markedly longer allograft survival than soluble anti-CD40L and rapamycin. These data demonstrate that FRCs are critical to facilitating costimulatory blockade. LN-targeted nanodelivery of anti-CD40L could effectively promote heart allograft acceptance.
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Affiliation(s)
- Jing Zhao
- Transplantation Research Center and
- Renal Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Sungwook Jung
- Transplantation Research Center and
- Renal Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Xiaofei Li
- Transplantation Research Center and
- Renal Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Lushen Li
- Department of Surgery and
- Center for Vascular and Inflammatory Diseases, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Vivek Kasinath
- Transplantation Research Center and
- Renal Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Hengcheng Zhang
- Transplantation Research Center and
- Renal Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Said N. Movahedi
- Transplantation Research Center and
- Renal Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Ahmad Mardini
- Transplantation Research Center and
- Renal Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Gianmarco Sabiu
- Transplantation Research Center and
- Renal Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Yoonha Hwang
- IVIM Technology, Daejeon, South Korea
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Vikas Saxena
- Department of Surgery and
- Center for Vascular and Inflammatory Diseases, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | | | - Bing Ma
- Institute for Genome Sciences and
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Sophie E. Acton
- Stromal Immunology Group, Laboratory for Molecular Cell Biology, University College London, London, United Kingdom
| | - Pilhan Kim
- IVIM Technology, Daejeon, South Korea
- Graduate School of Nanoscience and Technology and
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
| | - Joren C. Madsen
- Center for Transplantation Sciences, Department of Surgery
- Division of Cardiac Surgery, Department of Surgery, and
| | - Peter T. Sage
- Transplantation Research Center and
- Renal Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Stefan G. Tullius
- Division of Transplant Surgery and Transplant Surgery Research Laboratory, Department of Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - George C. Tsokos
- Division of Rheumatology and Clinical Immunology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Jonathan S. Bromberg
- Department of Surgery and
- Center for Vascular and Inflammatory Diseases, University of Maryland School of Medicine, Baltimore, Maryland, USA
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Reza Abdi
- Transplantation Research Center and
- Renal Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
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Hwang Y, Motomura C, Fukuda H, Kishikawa R, Watanabe N, Yoshihara S. Relationship among airborne pollen, sensitization, and pollen food allergy syndrome in Asian allergic children. PeerJ 2022; 10:e14243. [PMID: 36340201 PMCID: PMC9635357 DOI: 10.7717/peerj.14243] [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: 05/20/2022] [Accepted: 09/23/2022] [Indexed: 11/07/2022] Open
Abstract
Background Causes of pediatric pollen food allergy syndrome (PFAS) differ depending on airborne pollen levels in a particular region. We aimed to analyze airborne pollen counts, IgE sensitization rates, and PFAS incidence among children with allergies in South Korea and Japan. Methods This cross-sectional study included children aged 5-17 years with allergies in 2017. Airborne pollen samples were collected from Busan in South Korea, and Fukuoka and Tochigi in Japan. Questionnaires were used to assess bronchial asthma, seasonal allergic rhinitis, atopic dermatitis, food allergy, and PFAS. The serum IgE specific to Dermatophagoides pteronyssinus, pollen, tomato, and peach were investigated. Results In total, 57, 56, and 20 patients from Busan, Fukuoka, and Tochigi, respectively, were enrolled. Airborne Japanese cedar and cypress pollen were predominant in Fukuoka and Tochigi, whereas pine and alder pollen were predominant in Busan. Children with allergies in Fukuoka and Tochigi had a significantly higher sensitization rate to Japanese cedar, cypress, juniper, orchard grass, ragweed, Japanese hop, and tomato compared with children in Busan. In Fukuoka and Tochigi, where Japanese cedar and cypress pollen were frequently scattered, high sensitizations among allergic children were observed. The sensitization rate was not affected by the pollen count in alder, grass, ragweed, and Japanese hop. In multivariable analysis, only alder sensitization was found to be associated with PFAS (odds ratio: 6.62, 95% confidence interval: 1.63-26.87, p = 0.008). In patients with PFAS in Busan and Tochigi, peach associated with birch allergen Bet v 1 was a causative food item for PFAS. Moreover, PFAS was associated with ragweed and Japanese hop pollen sensitization in Fukuoka. Conclusion Regardless of pollen counts, alder pollen sensitization was associated with PFAS in children. Ragweed and Japanese hop pollen sensitization were associated with PFAS, particularly among children in southern Japan.
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Affiliation(s)
- Yoonha Hwang
- Department of Pediatrics, Busan St. Mary’s Hospital, Busan, South Korea
| | - Chikako Motomura
- Department of Pediatrics, National Hospital Organization Fukuoka National Hospital, Fukuoka, Japan
| | - Hironobu Fukuda
- Department of Pediatrics, Dokkyo Medical University Hospital, Tochigi, Japan
| | - Reiko Kishikawa
- Department of Allergy, National Hospital Organization Fukuoka National Hospital, Fukuoka, Japan
| | - Naoto Watanabe
- Department of Allergy Internal Medicine, Seirei Yokohama Hospital, Kanagawa, Japan
| | - Shigemi Yoshihara
- Department of Pediatrics, Dokkyo Medical University Hospital, Tochigi, Japan
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Choi S, Kang M, Kim JW, Kim J, Hwang Y, Jeon J, Oh HK, Lee H, Cho J, Kim DW, Cho S, Kim J, Kim K, Kang SB, Jheon S, Lee KW. 48P Long-term clinical outcomes after the second metastasectomy in patients (pts) with resected metastatic colorectal cancer (mCRC). Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.10.080] [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: 12/07/2022] Open
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7
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Shin SY, Jung M, Byeon K, Kang K, Park Y, Hwang Y, Lee S, Jin E, Roh S, Kim J, Ahn J, Lee S, Choi E, Ahn M, Lip G. External validation of the biomarker based ABCD score in atrial fibrillation patients with a non gender CHA2DS2 VASc score 0 to 1, A Korean multicenter retrospective cohort. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Patients with low to intermediate risk atrial fibrillation (AF), defined as non-gender CHA2DS2-VASc score of 0–1, are still at risk of stroke. This study verified the usefulness of ABCD score (Age [≥60 years], B-type natriuretic peptide [BNP] or N-terminal pro-BNP [≥300 pg/ml], Creatinine clearance [<50 ml/min/1.73 m2], and Dimension of the left atrium [≥45 mm]) for stroke risk stratification in non-gender CHA2DS2-VASc score 0–1.
Methods
This multi-center cohort study retrospectively analyzed AF patients with non-gender CHA2DS2-VASc score 0–1. The primary endpoint was the incidence of stroke with or without anti-thrombotic treatment (ATT). An ABCD score was also validated.
Results
Overall, 2694 patients (56.3±9.5 years; female, 726 [26.9%]) were followed-up for 4.0±2.8 years. The overall stroke rate was 0.84/100 person-years (P-Y), stratified as follows: 0.46/100P-Y for an ABCD score 0; 1.02/100P-Y for an ABCD score≥1. The ABCD score was superior to the non-gender CHA2DS2-VASc score in stroke risk stratification (C-index=0.618, P=0.015; net reclassification improvement=0.576, P=0.040; integrated differential improvement=0.033, P=0.066). ATT was prescribed in 2353 patients (86.5%), and the stroke rate was significantly lower in patients receiving non-vitamin K antagonist oral anticoagulant (NOAC) therapy and an ABCD score≥1 than in those without ATT (0.44/100P-Y versus 1.55/100 P-Y; hazard ratio=0.26, 95% confidence interval 0.11–0.63, P=0.003).
Conclusion
The biomarker-based ABCD score demonstrated improved stroke risk stratification in AF patients with non-gender CHA2DS2-VASc score 0–1. Furthermore, NOAC with an ABCD score≥1 was associated with significantly lower stroke rate in AF patients with a non-gender CHA2DS2-VASc score 0–1.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): Korean Disease Control and Prevention Agency
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Affiliation(s)
- S Y Shin
- Chung-Ang University Hospital , Seoul , Korea (Republic of)
| | - M Jung
- Chung-Ang University Hospital , Seoul , Korea (Republic of)
| | - K Byeon
- Chung-Ang University Hospital , Seoul , Korea (Republic of)
| | - K Kang
- Chung-Ang University Hospital , Seoul , Korea (Republic of)
| | - Y Park
- Gachon University Gil Medical Center , Incheon , Korea (Republic of)
| | - Y Hwang
- St. Vincent's Hospital , Suwon , Korea (Democratic People's Republic of)
| | - S Lee
- Kangbuk Samsung Hospital , Seoul , Korea (Republic of)
| | - E Jin
- Kyunghee University , Seoul , Korea (Republic of)
| | - S Roh
- Korea University Guro Hospital , Seoul , Korea (Democratic People's Republic of)
| | - J Kim
- Korea University Ansan Hospital, Cardiology , Ansan-Si , Korea (Republic of)
| | - J Ahn
- Pusan National University Hospital , Pusan , Korea (Republic of)
| | - S Lee
- Seoul National University Hospital , Seoul , Korea (Republic of)
| | - E Choi
- Seoul National University Hospital , Seoul , Korea (Republic of)
| | - M Ahn
- Wonju Severance Christian Hospital , Wonju , Korea (Republic of)
| | - G Lip
- University of Liverpool , Liverpool , United Kingdom
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8
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Lee J, Yoon S, Shih B, Jung W, Hwang Y, Jeon J, Cho S, Kim K, Jheon S. EP16.03-034 Differential Prognostic Effect of EGFR Mutation According to Smoking Status and Pathologic Stage in Non-mucinous Lung Adenocarcinoma. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.1095] [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: 12/01/2022]
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Ngwa VM, Edwards DN, Hwang Y, Karno B, Wang X, Yan C, Richmond A, Brantley-Sieders DM, Chen J. Loss of vascular endothelial glutaminase inhibits tumor growth and metastasis, and increases sensitivity to chemotherapy. Cancer Res Commun 2022; 2:694-705. [PMID: 36381236 PMCID: PMC9645801 DOI: 10.1158/2767-9764.crc-22-0048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 05/06/2022] [Accepted: 06/23/2022] [Indexed: 02/02/2023]
Abstract
Glutamine is the most abundant non-essential amino acid in blood stream; yet it's concentration in tumor interstitium is markedly lower than that in the serum, reflecting the huge demand of various cell types in tumor microenvironment for glutamine. While many studies have investigated glutamine metabolism in tumor epithelium and infiltrating immune cells, the role of glutamine metabolism in tumor blood vessels remains unknown. Here, we report that inducible genetic deletion of glutaminase (GLS) specifically in host endothelium, GLSECKO, impairs tumor growth and metastatic dissemination in vivo. Loss of GLS decreased tumor microvascular density, increased perivascular support cell coverage, improved perfusion, and reduced hypoxia in mammary tumors. Importantly, chemotherapeutic drug delivery and therapeutic efficacy were improved in tumor-bearing GLSECKO hosts or in combination with GLS inhibitor, CB839. Mechanistically, loss of GLS in tumor endothelium resulted in decreased leptin levels, and exogenous recombinant leptin rescued tumor growth defects in GLSECKO mice. Together, these data demonstrate that inhibition of endothelial glutamine metabolism normalizes tumor vessels, reducing tumor growth and metastatic spread, improving perfusion, and reducing hypoxia, and enhancing chemotherapeutic delivery. Thus, targeting glutamine metabolism in host vasculature may improve clinical outcome in patients with solid tumors.
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Affiliation(s)
- Verra M. Ngwa
- Program in Cancer Biology, Vanderbilt University, Nashville, Tennessee
| | - Deanna N. Edwards
- Program in Cancer Biology, Vanderbilt University, Nashville, Tennessee
- Department of Medicine, Division of Rheumatology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Yoonha Hwang
- Department of Medicine, Division of Rheumatology, Vanderbilt University Medical Center, Nashville, Tennessee
- Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, Tennessee
| | - Breelyn Karno
- Program in Cancer Biology, Vanderbilt University, Nashville, Tennessee
| | - Xiaoyong Wang
- Program in Cancer Biology, Vanderbilt University, Nashville, Tennessee
- Department of Medicine, Division of Rheumatology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Chi Yan
- Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, Tennessee
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Ann Richmond
- Program in Cancer Biology, Vanderbilt University, Nashville, Tennessee
- Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, Tennessee
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee
- Vanderbilt Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Dana M. Brantley-Sieders
- Program in Cancer Biology, Vanderbilt University, Nashville, Tennessee
- Department of Medicine, Division of Rheumatology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Jin Chen
- Program in Cancer Biology, Vanderbilt University, Nashville, Tennessee
- Department of Medicine, Division of Rheumatology, Vanderbilt University Medical Center, Nashville, Tennessee
- Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, Tennessee
- Vanderbilt Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, Tennessee
- Department of Cell and Developmental Biology, Vanderbilt University, Nashville, Tennessee
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Kim D, Kim T, Hwang Y, Lee CY, Joo EY, Seo DW, Hong SB, Shon YM. Prediction of the Responsiveness to Vagus-Nerve Stimulation in Patients with Drug-Resistant Epilepsy via Directed-Transfer-Function Analysis of Their Perioperative Scalp EEGs. J Clin Med 2022; 11:jcm11133695. [PMID: 35806980 PMCID: PMC9267399 DOI: 10.3390/jcm11133695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 05/13/2022] [Revised: 06/18/2022] [Accepted: 06/22/2022] [Indexed: 02/04/2023] Open
Abstract
This study aims to compare directed transfer function (DTF), which is an effective connectivity analysis, derived from scalp EEGs between responder and nonresponder groups implanted with vagus-nerve stimulation (VNS). Twelve patients with drug-resistant epilepsy (six responders and six nonresponders) and ten controls were recruited. A good response to VNS was defined as a reduction of ≥50% in seizure frequency compared with the presurgical baseline. DTF was calculated in five frequency bands (delta, theta, alpha, beta, and broadband) and seven grouped electrode regions (left and right frontal, temporal, parieto-occipital, and midline) in three different states (presurgical, stimulation-on, and stimulation-off states). Responders showed presurgical nodal strength close to the control group in both inflow and outflow, whereas nonresponders exhibited increased inward and outward connectivity measures. Nonresponders also had increased inward and outward connectivity measures in the various brain regions and various frequency bands assessed compared with the control group when the stimulation was on or off. Our study demonstrated that the presurgical DTF profiles of responders were different from those of nonresponders. Moreover, a presurgical normal DTF profile may predict good responsiveness to VNS.
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Affiliation(s)
- Dongyeop Kim
- Department of Neurology, Seoul Hospital, Ewha Womans University College of Medicine, Seoul 07804, Korea;
| | - Taekyung Kim
- Department of Medical Device Management and Research, Samsung Advanced Institute for Health Sciences and Technology (SAHIST), Sungkyunkwan University, Seoul 06355, Korea;
- Biomedical Engineering Research Center, Samsung Medical Center, Seoul 06351, Korea
| | - Yoonha Hwang
- Department of Neurology, The Catholic University of Korea Eunpyeong St. Mary’s Hospital, Seoul 03312, Korea;
| | - Chae Young Lee
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Korea; (C.Y.L.); (E.Y.J.); (D.-W.S.); (S.B.H.)
| | - Eun Yeon Joo
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Korea; (C.Y.L.); (E.Y.J.); (D.-W.S.); (S.B.H.)
| | - Dae-Won Seo
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Korea; (C.Y.L.); (E.Y.J.); (D.-W.S.); (S.B.H.)
| | - Seung Bong Hong
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Korea; (C.Y.L.); (E.Y.J.); (D.-W.S.); (S.B.H.)
| | - Young-Min Shon
- Department of Medical Device Management and Research, Samsung Advanced Institute for Health Sciences and Technology (SAHIST), Sungkyunkwan University, Seoul 06355, Korea;
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Korea; (C.Y.L.); (E.Y.J.); (D.-W.S.); (S.B.H.)
- Correspondence:
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11
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Jo H, Kim J, Kim D, Hwang Y, Seo D, Hong S, Shon YM. Lateralizing Characteristics of Morphometric Changes to Hippocampus and Amygdala in Unilateral Temporal Lobe Epilepsy with Hippocampal Sclerosis. Medicina (B Aires) 2022; 58:medicina58040480. [PMID: 35454319 PMCID: PMC9029741 DOI: 10.3390/medicina58040480] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 03/21/2022] [Accepted: 03/23/2022] [Indexed: 11/16/2022] Open
Abstract
Background andObjective: In the present study, a detailed investigation of substructural volume change in the hippocampus (HC) and amygdala (AMG) was performed and the association with clinical features in patients with mesial temporal lobe epilepsy with hippocampal sclerosis (TLE-HS) determined. Methods: The present study included 22 patients with left-sided TLE-HS (LTLE-HS) and 26 patients with right-sided TLE-HS (RTLE-HS). In addition, 28 healthy controls underwent high-resolution T2-weighted image (T2WI) and T1-weighted image (T1WI) MRI scanning. Subfield analysis of HC and AMG was performed using FreeSurfer version 6.0. Results: Patients with TLE-HS showed a decrease in the volume of substructures in both HC and AMG, and this change was observed on the contralateral side and the ipsilateral side with HS. The volume reduction pattern of substructures showed laterality-dependent characteristics. Patients with LTLE-HS had smaller volumes of the ipsilateral subiculum (SUB), contralateral SUB, and ipsilateral cortical nucleus of AMG than patients with RTLE-HS. Patients with RTLE-HS had reduced ipsilateral cornu ammonis (CA) 2/3 and contralateral cortico-amygdaloid transition area (CAT) volumes. The relationship between clinical variables and subregions was different based on the lateralization of the seizure focus. Focal to bilateral tonic-clonic seizures (FTBTCS) was associated with contralateral and ipsilateral side subregions only in LTLE-HS. The abdominal FAS was associated with the volume reduction of AMG subregions only in LTLE-HS, but the volume reduction was less than in patients without FAS. Conclusions: The results indicate that unilateral TLE-HS is a bilateral disease that shows different laterality-dependent characteristics based on the subfield analysis of HC and AMG. Subfield volumes of HC and AMG were associated with clinical variables, and the more damaged substructures depended on laterality in TLE-HS. These findings support the evidence that LTLE-HS and RTLE-HS are disparate epilepsy entities rather than simply identical syndromes harboring a mesial temporal lesion. In addition, the presence of FAS supports good localization value, and abdominal FAS has a high localization value, especially in patients with LTLE-HS.
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Affiliation(s)
- Hyunjin Jo
- Samsung Medical Center, Department of Neurology, Sungkyunkwan University School of Medicine, Seoul 06355, Korea; (H.J.); (J.K.); (D.S.); (S.H.)
| | - Jeongsik Kim
- Samsung Medical Center, Department of Neurology, Sungkyunkwan University School of Medicine, Seoul 06355, Korea; (H.J.); (J.K.); (D.S.); (S.H.)
| | - Dongyeop Kim
- Department of Neurology, Seoul Hospital, Ewha Womans University College of Medicine, Seoul 03760, Korea;
| | - Yoonha Hwang
- Department of Neurology, The Catholic University of Korea Eunpyeong St. Mary’s Hospital, Seoul 07345, Korea;
| | - Daewon Seo
- Samsung Medical Center, Department of Neurology, Sungkyunkwan University School of Medicine, Seoul 06355, Korea; (H.J.); (J.K.); (D.S.); (S.H.)
| | - Seungbong Hong
- Samsung Medical Center, Department of Neurology, Sungkyunkwan University School of Medicine, Seoul 06355, Korea; (H.J.); (J.K.); (D.S.); (S.H.)
| | - Young-Min Shon
- Samsung Medical Center, Department of Neurology, Sungkyunkwan University School of Medicine, Seoul 06355, Korea; (H.J.); (J.K.); (D.S.); (S.H.)
- Department of Medical Device Management and Research, Samsung Advanced Institute for Health Sciences & Technology (SAHIST), Sunkyunkwan University, Seoul 06355, Korea
- Correspondence: ; Tel.: +82-2-3410-2701
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12
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Hwang Y. The first survey on patient needs for remote monitoring of cardiac implantable electronic device in South Korea. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehab849.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background/Aims: Studies showed that remote device monitoring reduced unnecessary outpatient visits and increased patient satisfaction. As there was no local research on remote monitoring (RM) in Korea, there was a lack of evidence for policy or insurance standards due to the lack of domestic data despite high demand by domestic arrhythmia experts. In order to establish the basis for patient satisfaction, economic efficiency, and safety of wireless monitoring, a survey-based study was planned.
Methods
This was a single-university hospital survey. The satisfaction index was evaluated using a questionnaire to investigate patient satisfaction in outpatient clinics, economic efficiency (measured as home-to-clinic time, waiting time, and actual clinic time), and demand for RM in patients with implantable cardiac devices. The questionnaire was adopted and modified from the Survey on Telehealth Patient Experience by Bas-Villalobos, 2006 (modified Korean version 2.0 by You Mi Hwang, 2020).
Results
Surveys were answered by 171 patients. The mean age of these patients was 71.2 ± 12.4 years. Based on the survey, home to clinic time was usually less than one h, mean waiting time in the hospital until clinic time ranged 42.6 ± 24.5 min, and mean clinic time ranged 3.1 ± 1.7 minutes. Based on the survey, patients favored RM over hospital visits with cardiac implantable electronic device follow-up mainly because of long travel times from home to clinic.
Conclusions
Based on the survey results, there is a clear need for RM in patients who have cardiac implantable electronic devices.
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Affiliation(s)
- Y Hwang
- Catholic medical center, St. Vincent"s Hosp., Suwon, Korea (Republic of)
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13
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Jeon YH, Ahn K, Kim J, Shin M, Hong SJ, Lee SY, Pyun BY, Min TK, Jung M, Lee J, Song TW, Kim HY, Lee S, Jeong K, Hwang Y, Kim M, Lee YJ, Kim MJ, Lee JY, Yum HY, Jang GC, Park YA, Kim JH. Clinical Characteristics of Atopic Dermatitis in Korean School-Aged Children and Adolescents According to Onset Age and Severity. J Korean Med Sci 2022; 37:e30. [PMID: 35075829 PMCID: PMC8787802 DOI: 10.3346/jkms.2022.37.e30] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 12/01/2021] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Atopic dermatitis (AD) is a heterogeneous disease with different age of onset, disease course, clinical symptoms, severity, and risk of comorbidity. The characteristics of children with AD also vary by age or country. However, little is known about the clinical characteristics of AD in Korean school-aged children and adolescents. Furthermore, there are few studies on phenotypic differences according to onset age. This study aimed to explore the clinical characteristics and phenotypes according to onset age and severity of AD in children and adolescents in Korea. METHODS AD patients aged 6-18 years who presented to 18 hospitals nationwide were surveyed. The patients were examined for disease severity by pediatric allergy specialists, and data on history of other allergic diseases, familial allergy history, onset age, trigger factors, lesion sites, treatment history and quality of life were collected. The results of the patient's allergy test were also analyzed. The patients were classified into infancy-onset (< 2 years of age), preschool-onset (2-5 years of age), and childhood-onset (≥ 6 years of age) groups. Study population was analyzed for clinical features according to onset-age groups and severity groups. RESULTS A total of 258 patients with a mean age of 10.62 ± 3.18 years were included in the study. Infancy-onset group accounted for about 60% of all patients and presented significantly more other allergic diseases, such as allergic rhinitis and asthma (P = 0.002 and P = 0.001, respectively). Food allergy symptoms and diagnoses were highly relevant to both earlier onset and more severe group. Inhalant allergen sensitization was significantly associated with both infancy-onset group and severe group (P = 0.012 and P = 0.024, respectively). A family history of food allergies was significantly associated with infancy-onset group (P = 0.036). Severe group was significantly associated with a family history of AD, especially a paternal history of AD (P = 0.048 and P = 0.004, respectively). Facial (periorbital, ear, and cheek) lesions, periauricular fissures, hand/foot eczema, and xerosis were associated with infancy-onset group. The earlier the onset of AD, the poorer the quality of life (P = 0.038). Systemic immunosuppressants were used in only 9.6% of the patients in the severe group. CONCLUSION This study analyzed the clinical features of AD in Korean children and adolescents through a multicenter nationwide study and demonstrated the phenotypic differences according to onset age and severity. Considering the findings that the early-onset group is more severe and accompanied by more systemic allergic diseases, early management should be emphasized in young children and infants.
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Affiliation(s)
- You Hoon Jeon
- Department of Pediatrics, Hallym University, Dongtan Sacred Heart Hospital, Hwaseong, Korea
| | - Kangmo Ahn
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jihyun Kim
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Meeyong Shin
- Department of Pediatrics, Soonchunhyang University Bucheon Hospital, Soonchunhyang University College of Medicine, Bucheon, Korea
| | - Soo-Jong Hong
- Department of Pediatrics, Childhood Asthma Atopy Center, Humidifier Disinfectant Health Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - So-Yeon Lee
- Department of Pediatrics, Childhood Asthma Atopy Center, Humidifier Disinfectant Health Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Bok Yang Pyun
- Department of Pediatrics, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul, Korea
| | - Taek Ki Min
- Department of Pediatrics, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul, Korea
| | - Minyoung Jung
- Department of Pediatrics, Kosin University Gospel Hospital, Kosin University School of Medicine, Busan, Korea
| | - Jeongmin Lee
- Department of Pediatrics, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Tae Won Song
- Department of Pediatrics, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea
| | - Hye-Young Kim
- Department of Pediatrics, Medical Research Institute, Pusan National University School of Medicine, Pusan National University Hospital, Busan, Korea
| | - Sooyoung Lee
- Department of Pediatrics, Ajou University School of Medicine, Suwon, Korea
| | - Kyunguk Jeong
- Department of Pediatrics, Ajou University School of Medicine, Suwon, Korea
| | - Yoonha Hwang
- Department of Pediatrics, Busan St. Mary's Hospital, Busan, Korea
| | - Minji Kim
- Department of Pediatrics, Chungnam National University Sejong Hospital, Chungnam National University College of Medicine, Sejong, Korea
| | - Yong Ju Lee
- Department of Pediatrics, Yongin Severance Hospital, Yonsei University College of Medicine, Yongin, Korea
| | - Min Jung Kim
- Department of Pediatrics, Yongin Severance Hospital, Yonsei University College of Medicine, Yongin, Korea
| | - Ji Young Lee
- Department of Pediatrics, Hallym University Chuncheon Sacred Heart Hospital, Chuncheon, Korea
| | - Hye Yung Yum
- Department of Pediatrics, Seoul Medical Center, Seoul, Korea
| | - Gwang Cheon Jang
- Department of Pediatrics, National Health Insurance Service Ilsan Hospital, Goyang, Korea
| | - Young A Park
- Department of Pediatrics, CHA Ilsan Hospital, CHA University School of Medicine, Goyang, Korea
| | - Jeong Hee Kim
- Department of Pediatrics, Inha University Hospital, College of Medicine, Inha University, Incheon, Korea.
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14
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Park I, Hong S, Seok J, Lucia SE, Song E, Kim M, Kong E, Seo H, Hwang Y, Ahn S, Kim S, Jang DH, Lee JH, Park SH, Kim P, Jo YH. Longitudinal Intravital Imaging of Tumor-Infiltrating Lymphocyte Motility in Breast Cancer Models. J Breast Cancer 2021; 24:463-473. [PMID: 34652077 PMCID: PMC8561133 DOI: 10.4048/jbc.2021.24.e40] [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: 04/30/2021] [Revised: 08/20/2021] [Accepted: 09/05/2021] [Indexed: 11/30/2022] Open
Abstract
Immunoreactive dynamics of tumor-infiltrating lymphocytes (TILs) within the tumor microenvironment in breast cancer are not well understood. This study aimed to investigate the spatiotemporal cellular dynamics of TILs in breast cancer models. Breast cancer cells were implanted into the dorsal skinfold chamber of BALB/c nude mice, and T lymphocytes were adoptively transferred. Longitudinal intravital imaging was performed, and the spatiotemporal dynamics of TILs were assessed. In the 4T1 model, TILs progressively exhibited increased motility, and their motility inside the tumor was significantly higher than that outside the tumor. In the MDA-MB-231 model, the motility of TILs progressively decreased after an initial increase. TIL motility in the MDA-MB-231 and MCF-7 models differed significantly, suggesting an association between programmed death-ligand 1 expression levels and TIL motility, which warrants further investigation. Furthermore, intravital imaging of TILs can be a useful method for addressing dynamic interactions between TILs and breast cancer cells.
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Affiliation(s)
- Inwon Park
- Department of Emergency Medicine, Seoul National University Bundang Hospital (SNUBH), Seongnam, Korea.,Department of Emergency Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Sujung Hong
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea.,KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea
| | - Joon Seok
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea
| | - Stephani Edwina Lucia
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea.,Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea
| | - Eunjoo Song
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea
| | - Mingyo Kim
- Division of Rheumatology, Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Eunji Kong
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea.,Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea
| | - Howon Seo
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea.,KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea
| | - Yoonha Hwang
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea.,KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea
| | - Soyeon Ahn
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea.,KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea
| | - Seonghye Kim
- Department of Emergency Medicine, Seoul National University Bundang Hospital (SNUBH), Seongnam, Korea
| | - Dong-Hyun Jang
- Department of Emergency Medicine, Seoul National University Bundang Hospital (SNUBH), Seongnam, Korea.,Department of Emergency Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Jae Hyuk Lee
- Department of Emergency Medicine, Seoul National University Bundang Hospital (SNUBH), Seongnam, Korea.,Department of Emergency Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Su-Hyung Park
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea
| | - Pilhan Kim
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea.,KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea.,Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea
| | - You Hwan Jo
- Department of Emergency Medicine, Seoul National University Bundang Hospital (SNUBH), Seongnam, Korea.,Department of Emergency Medicine, Seoul National University College of Medicine, Seoul, Korea.
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15
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Jeon J, Hwang Y, Lee J, Kong E, Moon J, Hong S, Kim P. Intravital Imaging of Circulating Red Blood Cells in the Retinal Vasculature of Growing Mice. Transl Vis Sci Technol 2021; 10:31. [PMID: 34004010 PMCID: PMC8083064 DOI: 10.1167/tvst.10.4.31] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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] [Indexed: 12/26/2022] Open
Abstract
Purpose To establish a custom-built, high-speed 90 frame-per-second laser-scanning confocal microscope for real-time in vivo retinal imaging of individual flowing red blood cells (RBCs) in retinal vasculature of live mouse model. Methods Fluorescently labeled RBCs were injected into mice of different ages (3 to 62 weeks old). Anti-CD31 antibody conjugated with Alexa Fluor 647 was injected to visualize retinal endothelial cells (ECs). Longitudinal and cross-sectional intravital retinal imaging of flowing RBCs and ECs was performed in two strains (C57BL/6 and Balb/c) by using the custom-built confocal microscope. Results Simultaneous tracking of the routes of many fluorescently labeled individual RBCs flowing from a large artery and vein to a single capillary in the retina of live mice was achieved, which enabled in vivo measurement of retinal RBC flow velocities in each vessel type in growing mice from 3 to 62 weeks after birth. Average RBC flow velocities were gradually increased during growing from 3 to 14 weeks by more than two times. Then the average RBC flow velocity was maintained at about 20 mm/s in artery and 16 mm/s in vein until 62 weeks. Conclusions Our study successfully established a custom-built high-speed 90-Hz retinal confocal microscope for measuring RBC flow velocity at the single cell level. It could be a useful tool to investigate the pathophysiology of various retinal diseases associated with blood flow impairment. Translational Relevance This technological method could be a valuable assessment tool to help the development of novel therapeutics for retinal diseases.
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Affiliation(s)
- Jehwi Jeon
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,KI for Health Science and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Yoonha Hwang
- KI for Health Science and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Jingu Lee
- KI for Health Science and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Eunji Kong
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,KI for Health Science and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Jieun Moon
- KI for Health Science and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Sujung Hong
- KI for Health Science and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Pilhan Kim
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,KI for Health Science and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
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16
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Edwards DN, Ngwa VM, Raybuck AL, Wang S, Hwang Y, Kim LC, Cho SH, Paik Y, Wang Q, Zhang S, Manning HC, Rathmell JC, Cook RS, Boothby MR, Chen J. Selective glutamine metabolism inhibition in tumor cells improves antitumor T lymphocyte activity in triple-negative breast cancer. J Clin Invest 2021; 131:140100. [PMID: 33320840 PMCID: PMC7880417 DOI: 10.1172/jci140100] [Citation(s) in RCA: 140] [Impact Index Per Article: 46.7] [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: 05/08/2020] [Accepted: 12/10/2020] [Indexed: 12/27/2022] Open
Abstract
Rapidly proliferating tumor and immune cells need metabolic programs that support energy and biomass production. The amino acid glutamine is consumed by effector T cells and glutamine-addicted triple-negative breast cancer (TNBC) cells, suggesting that a metabolic competition for glutamine may exist within the tumor microenvironment, potentially serving as a therapeutic intervention strategy. Here, we report that there is an inverse correlation between glutamine metabolic genes and markers of T cell-mediated cytotoxicity in human basal-like breast cancer (BLBC) patient data sets, with increased glutamine metabolism and decreased T cell cytotoxicity associated with poor survival. We found that tumor cell-specific loss of glutaminase (GLS), a key enzyme for glutamine metabolism, improved antitumor T cell activation in both a spontaneous mouse TNBC model and orthotopic grafts. The glutamine transporter inhibitor V-9302 selectively blocked glutamine uptake by TNBC cells but not CD8+ T cells, driving synthesis of glutathione, a major cellular antioxidant, to improve CD8+ T cell effector function. We propose a "glutamine steal" scenario, in which cancer cells deprive tumor-infiltrating lymphocytes of needed glutamine, thus impairing antitumor immune responses. Therefore, tumor-selective targeting of glutamine metabolism may be a promising therapeutic strategy in TNBC.
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Affiliation(s)
- Deanna N. Edwards
- Division of Rheumatology and Immunology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Verra M. Ngwa
- Program in Cancer Biology, Vanderbilt University, Nashville, Tennessee, USA
| | - Ariel L. Raybuck
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Shan Wang
- Division of Rheumatology and Immunology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Yoonha Hwang
- Division of Rheumatology and Immunology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Laura C. Kim
- Program in Cancer Biology, Vanderbilt University, Nashville, Tennessee, USA
| | - Sung Hoon Cho
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Yeeun Paik
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Qingfei Wang
- Department of Biological Sciences, College of Science, University of Notre Dame, Notre Dame, Indiana, USA
- Mike and Josie Harper Cancer Research Institute, University of Notre Dame, South Bend, Indiana, USA
| | - Siyuan Zhang
- Department of Biological Sciences, College of Science, University of Notre Dame, Notre Dame, Indiana, USA
- Mike and Josie Harper Cancer Research Institute, University of Notre Dame, South Bend, Indiana, USA
| | - H. Charles Manning
- Department of Chemistry
- Center for Molecular Probes
- Vanderbilt Institute for Imaging Sciences
- Department of Radiology and Radiological Sciences
- Vanderbilt-Ingram Cancer Center
| | - Jeffrey C. Rathmell
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Vanderbilt-Ingram Cancer Center
- Vanderbilt Institute for Infection, Immunology and Inflammation, and
| | - Rebecca S. Cook
- Program in Cancer Biology, Vanderbilt University, Nashville, Tennessee, USA
- Vanderbilt-Ingram Cancer Center
- Department of Cell and Developmental Biology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Mark R. Boothby
- Division of Rheumatology and Immunology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Program in Cancer Biology, Vanderbilt University, Nashville, Tennessee, USA
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Vanderbilt Institute for Infection, Immunology and Inflammation, and
| | - Jin Chen
- Division of Rheumatology and Immunology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Program in Cancer Biology, Vanderbilt University, Nashville, Tennessee, USA
- Vanderbilt-Ingram Cancer Center
- Vanderbilt Institute for Infection, Immunology and Inflammation, and
- Department of Cell and Developmental Biology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Veterans Affairs Medical Center, Tennessee Valley Healthcare System, Nashville, Tennessee, USA
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17
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Hwang Y, Lee HR, Jo H, Kim D, Joo EY, Seo DW, Hong SB, Shon YM. Regional Ictal Hyperperfusion in the Contralateral Occipital Area May Be a Poor Prognostic Marker of Anterior Temporal Lobectomy: A SISCOM Analysis of MTLE Cases. Neuropsychiatr Dis Treat 2021; 17:2421-2427. [PMID: 34326640 PMCID: PMC8314682 DOI: 10.2147/ndt.s317915] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 07/07/2021] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND AND OBJECTIVE Subtraction of ictal SPECT coregistered to MRI (SISCOM) provides complementary information for detecting the ictal onset zone, especially in patients with MRI-negative focal epilepsy, and provides additional useful information for predicting long-term postresection outcomes. This study sought to investigate the relationship between surgical failure and increased cerebral blood flow (CBF) pattern using SPECT in patients with mesial temporal lobe epilepsy with unilateral hippocampal sclerosis (MTLE-HS). METHODS Among 42 subjects who underwent anterior temporal lobectomy with amygdalohippocampectomy (ATL-AH) for MTLE-HS, 29 (69.0%) were seizure-free (SF group). Hyperperfusion was compared in 14 ipsilateral and contralateral brain regions in SISCOM images between the two groups. RESULTS The pattern of ictal hyperperfusion in temporal regions did not vary significantly between the SF and non-seizure-free (NSF) groups. However, CBF increases in the contralateral occipital area was more frequent in the NSF group than in the SF group. Furthermore, ictal hyperperfusion of the ipsilateral occipital and contralateral parietal areas tended to be more frequent in the NSF group. CONCLUSION The results indicate that poor ATL-AH surgical outcome is associated with a tendency of ictal hyperperfusion of the contralateral occipital cortex based on SISCOM analysis. The pattern of early ictal CBF changes implicating the propagation from temporal to occipital cortices can be considered a marker of poor surgical outcomes of ATL-AH in MTLE-HS patients.
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Affiliation(s)
- Yoonha Hwang
- Department of Neurology, The Catholic University of Korea Eunpyeong St. Mary's Hospital, Seoul, Republic of Korea
| | - Hwa Reung Lee
- Department of Neurology, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Hyunjin Jo
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.,Neuroscience Center, Samsung Medical Center, Seoul, Republic of Korea
| | - Dongyeop Kim
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.,Neuroscience Center, Samsung Medical Center, Seoul, Republic of Korea
| | - Eun Yeon Joo
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.,Neuroscience Center, Samsung Medical Center, Seoul, Republic of Korea
| | - Dae-Won Seo
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.,Neuroscience Center, Samsung Medical Center, Seoul, Republic of Korea
| | - Seung Bong Hong
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.,Neuroscience Center, Samsung Medical Center, Seoul, Republic of Korea
| | - Young-Min Shon
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.,Neuroscience Center, Samsung Medical Center, Seoul, Republic of Korea.,Department of Medical Device Management and Research, Samsung Advanced Institute for Health Sciences & Technology (SAHIST), Sungkyunkwan University, Seoul, Korea
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19
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Kim HM, Ha S, Hong HK, Hwang Y, Kim P, Yang E, Chung JY, Park S, Park YJ, Park KH, Kim H, Woo SJ. Intraocular Distribution and Kinetics of Intravitreally Injected Antibodies and Nanoparticles in Rabbit Eyes. Transl Vis Sci Technol 2020; 9:20. [PMID: 32821517 PMCID: PMC7409074 DOI: 10.1167/tvst.9.6.20] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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: 02/04/2020] [Accepted: 03/31/2020] [Indexed: 12/12/2022] Open
Abstract
Purpose To investigate the intraocular distribution and kinetics of antibodies and nanoparticles in the experimental model. Methods Antibodies (whole IgG 149kDa, antigen-binding fragments 48.39 kDa) and four kinds of nondegradable nanoparticles (25, 50, 200, and 250 nm) were intravitreally injected in the right eye of New Zealand white rabbits. The average optical density and concentration were used to measure intraocular distribution and kinetics. Results After intravitreal injection, antibodies were distributed throughout the vitreous humor and eliminated gradually into anterior and posterior routes. Fluorescence intensity decreased 1 day after injection and was not detected 25 days after injection. The nondegradable nanoparticles migrated posteriorly to the retina 7 days after injection onward and anteriorly to the aqueous humor from 1 hour to 1 day after injection. The fluorescence intensity of the nanoparticles was relatively stable in the vitreous humor, compared to antibodies. Nanoparticles accumulated on the internal limiting membrane of the retina with no penetration into deeper retinal tissue, whereas the smaller size 25 nm nanoparticles passed across the ciliary body and moved into choroid, retina, and suprachoroidal space. A gradual decrease of nanoparticles by their sizes in the vitreous after 30 days after injection was described as the percentage ratio: 61.1% (25 nm), 69.1% (50 nm), 78.6% (200nm), and 85.3% (250 nm). Conclusions Our study revealed the in vivo intraocular distribution and kinetics of antibodies and nanoparticles with diverse sizes and the result might help to develop newer intraocular drugs and drug delivery systems to treat retinal diseases. Translational Relevance These experimental results can be valuable data for human research.
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Affiliation(s)
- Hyeong Min Kim
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | | | - Hye Kyoung Hong
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Yoonha Hwang
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Pilhan Kim
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Eunsol Yang
- Department of Clinical Pharmacology and Therapeutics, Seoul National University College of Medicine and Bundang Hospital, Seongnam, Republic of Korea
| | - Jae Yong Chung
- Department of Clinical Pharmacology and Therapeutics, Seoul National University College of Medicine and Bundang Hospital, Seongnam, Republic of Korea
| | - Sunyoung Park
- Department of Chemical and Biomolecular Engineering, Sogang University, Seoul, Republic of Korea
| | - Young Joo Park
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Kyu Hyung Park
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Hyuncheol Kim
- Department of Chemical and Biomolecular Engineering, Sogang University, Seoul, Republic of Korea
| | - Se Joon Woo
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
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20
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Park I, Hong S, Hwang Y, Kim P. A Novel Pancreatic Imaging Window for Stabilized Longitudinal In Vivo Observation of Pancreatic Islets in Murine Model. Diabetes Metab J 2020; 44:193-198. [PMID: 31237131 PMCID: PMC7043981 DOI: 10.4093/dmj.2018.0268] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 02/25/2019] [Indexed: 01/25/2023] Open
Abstract
Longitudinal imaging of murine pancreas is technically challenging due to the mechanical softness of the tissue influenced by peristalsis. Here, we report a novel pancreatic imaging window for long-term stabilized cellular-level observation of the islets in the pancreas in vivo. By spatially separating the pancreas from the bowel movement and physiologic respiration with a metal plate integrated in the imaging window, we successfully tracked the pancreatic islets up to three weeks and visualized the dumbbell-shape transformation from the single islet. This window can be a useful tool for long-term cellular-level visualization of the microstructure in the pancreas.
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Affiliation(s)
- Inwon Park
- Department of Emergency Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea
| | - Sujung Hong
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea
| | - Yoonha Hwang
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea
| | - Pilhan Kim
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea.
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21
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Schreier CJ, Greene RJ, Bhandari S, Britton N, Greene B, Grimm D, Hannah K, Hwang Y, Jeffress D, Kegley M, Mawhinney T, McGill B, Oehrl L, Schulze C, Smallidge R, Vincent D, Wallace M, Willis D. Determination of Ethoxyquin in Feeds by Liquid Chromatography: Collaborative Study. J AOAC Int 2020. [DOI: 10.1093/jaoac/80.4.725] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Ethoxyquin is a chemical antioxidant used in feeds, ingredients, fats, and oils. A liquid chromatographic (LC) method for determination of ethoxyquin was developed. The method involves acetonitrile extraction of the sample and isocratic Cis reversed-phase chromatography with ammonium acetate buffer-acetonitrile as mobile phase and fluorescence detection. A collaborative study of the determination of ethoxyquin in various meals and extruded pet foods was conducted by The lams Company Research Laboratory. Eleven laboratories analyzed 16 samples (including 2 blind duplicates) consisting of 7 meat meals and 9 extruded pet foods. Sample means ranged from 0.25 to 289 ppm. Repeatability standard deviations ranged from 0.08 to 3.2 ppm, and repeatability relative standard deviations ranged from 4.5 to 32%. Reproducibility standard deviations ranged from 0.12 to 13 ppm, and reproducibility relative standard deviations ranged from 4.5 to 55%. The LC method for determination of ethoxyquin in feeds has been adopted first action by AOAC INTERNATIONAL.
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22
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Hwang Y, Jeon J, Cho S, Kim K, Jheon S. P2.17-37 Prognostic Implication of Surgical Treatment for the Dominant Lung Adenocarcinoma Associated with Part-Solid Nodules. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1948] [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: 10/25/2022]
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23
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Hwang Y, Moon H, Shin M. EP1.17-20 Influence of Insurance Status on Survival of Patients with Non-Small Cell Lung Cancer Underwent Surgical Treatment. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.2430] [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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24
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Shin J, Hwang Y, Hwang C, Lee Y. 396 Roles of RNA-binding proteins in inflammatory skin diseases. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.398] [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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25
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Ahn J, Kong E, Choe K, Song E, Hwang Y, Seo H, Park I, Kim P. In vivo longitudinal depth-wise visualization of tumorigenesis by needle-shaped side-view confocal endomicroscopy. Biomed Opt Express 2019; 10:2719-2729. [PMID: 31259046 PMCID: PMC6583337 DOI: 10.1364/boe.10.002719] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 04/24/2019] [Accepted: 04/28/2019] [Indexed: 05/29/2023]
Abstract
In vivo, longitudinal observation of tumorigenesis in a live mouse model over an extended time period has been actively pursued to obtain a better understanding of the cellular and molecular mechanism in a highly complex tumor microenvironment. However, common intravital imaging approaches based on a conventional laser scanning confocal or a two-photon microscope have been mostly limited to the observation of superficial parts of the solid tumor tissue. In this work, we implemented a small diameter needle-shaped side-view confocal endomicroscope that can be directly inserted into a solid tumor in a minimally-invasive manner in vivo. By inserting the side-view endomicroscope into the breast tumor from the surface, we achieved in vivo depth-wise cellular-level visualization of microvasculature and fluorescently labeled tumor cells located deeply inside the tumor. In addition, we successfully performed longitudinal depth-wise visualization of a growing breast tumor over three weeks in a live mouse model, which revealed dynamic changes in microvasculature such as a decreasing amount of intratumoral blood vessels over time.
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Affiliation(s)
- Jinhyo Ahn
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Daejeon, 34141, South Korea
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Daejeon, 34141, South Korea
- These authors contributed equally
| | - Eunji Kong
- Biomedical Science and Engineering Interdisciplinary Program, Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Daejeon, 34141, South Korea
- These authors contributed equally
| | - Kibaek Choe
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Daejeon, 34141, South Korea
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Daejeon, 34141, South Korea
| | - Eunjoo Song
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Daejeon, 34141, South Korea
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Daejeon, 34141, South Korea
| | - Yoonha Hwang
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Daejeon, 34141, South Korea
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Daejeon, 34141, South Korea
| | - Howon Seo
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Daejeon, 34141, South Korea
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Daejeon, 34141, South Korea
| | - Inwon Park
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Daejeon, 34141, South Korea
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Daejeon, 34141, South Korea
- Department of Emergency Medicine, Seoul National University Bundang Hospital (SNUBH), 82, Gumi-ro 173 Beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, South Korea
| | - Pilhan Kim
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Daejeon, 34141, South Korea
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Daejeon, 34141, South Korea
- Biomedical Science and Engineering Interdisciplinary Program, Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Daejeon, 34141, South Korea
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Daejeon, 34141, South Korea
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26
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Hwang Y, Kim LC, Song W, Edwards DN, Cook RS, Chen J. Disruption of the Scaffolding Function of mLST8 Selectively Inhibits mTORC2 Assembly and Function and Suppresses mTORC2-Dependent Tumor Growth In Vivo. Cancer Res 2019; 79:3178-3184. [PMID: 31085701 DOI: 10.1158/0008-5472.can-18-3658] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 04/05/2019] [Accepted: 05/08/2019] [Indexed: 12/24/2022]
Abstract
mTOR is a serine/threonine kinase that acts in two distinct complexes, mTORC1 and mTORC2, and is dysregulated in many diseases including cancer. mLST8 is a shared component of both mTORC1 and mTORC2, yet little is known regarding how mLST8 contributes to assembly and activity of the mTOR complexes. Here we assessed mLST8 loss in a panel of normal and cancer cells and observed little to no impact on assembly or activity of mTORC1. However, mLST8 loss blocked mTOR association with mTORC2 cofactors RICTOR and SIN1, thus abrogating mTORC2 activity. Similarly, a single pair of mutations on mLST8 with a corresponding mutation on mTOR interfered with mTORC2 assembly and activity without affecting mTORC1. We also discovered a direct interaction between mLST8 and the NH2-terminal domain of the mTORC2 cofactor SIN1. In PTEN-null prostate cancer xenografts, mLST8 mutations disrupting the mTOR interaction motif inhibited AKT S473 phosphorylation and decreased tumor cell proliferation and tumor growth in vivo. Together, these data suggest that the scaffolding function of mLST8 is critical for assembly and activity of mTORC2, but not mTORC1, an observation that could enable therapeutic mTORC2-selective inhibition as a therapeutic strategy. SIGNIFICANCE: These findings show that mLST8 functions as a scaffold to maintain mTORC2 integrity and kinase activity, unveiling a new avenue for development of mTORC2-specific inhibitors.
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Affiliation(s)
- Yoonha Hwang
- Veterans Affairs Medical Center, Tennessee Valley Healthcare System, Nashville, Tennessee
- Division of Rheumatology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Laura C Kim
- Program in Cancer Biology, Vanderbilt University, Nashville, Tennessee
| | - Wenqiang Song
- Veterans Affairs Medical Center, Tennessee Valley Healthcare System, Nashville, Tennessee
- Division of Rheumatology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Deanna N Edwards
- Veterans Affairs Medical Center, Tennessee Valley Healthcare System, Nashville, Tennessee
- Division of Rheumatology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Rebecca S Cook
- Program in Cancer Biology, Vanderbilt University, Nashville, Tennessee
- Deparment of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee
- Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, Tennessee
- Department of Cell and Developmental Biology, Vanderbilt University, Nashville, Tennessee
| | - Jin Chen
- Veterans Affairs Medical Center, Tennessee Valley Healthcare System, Nashville, Tennessee.
- Division of Rheumatology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee
- Program in Cancer Biology, Vanderbilt University, Nashville, Tennessee
- Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, Tennessee
- Department of Cell and Developmental Biology, Vanderbilt University, Nashville, Tennessee
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27
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Park I, Kim M, Choe K, Song E, Seo H, Hwang Y, Ahn J, Lee SH, Lee JH, Jo YH, Kim K, Koh GY, Kim P. Neutrophils disturb pulmonary microcirculation in sepsis-induced acute lung injury. Eur Respir J 2019; 53:13993003.00786-2018. [PMID: 30635296 PMCID: PMC6437604 DOI: 10.1183/13993003.00786-2018] [Citation(s) in RCA: 148] [Impact Index Per Article: 29.6] [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: 04/26/2018] [Accepted: 12/27/2018] [Indexed: 02/02/2023]
Abstract
The lung is highly vulnerable during sepsis, yet its functional deterioration accompanied by disturbances in the pulmonary microcirculation is poorly understood. This study aimed to investigate how the pulmonary microcirculation is distorted in sepsis-induced acute lung injury (ALI) and reveal the underlying cellular pathophysiologic mechanism. Using a custom-made intravital lung microscopic imaging system in a murine model of sepsis-induced ALI, we achieved direct real-time visualisation of the pulmonary microcirculation and circulating cells in vivo. We derived the functional capillary ratio (FCR) as a quantitative parameter for assessing the fraction of functional microvasculature in the pulmonary microcirculation and dead space. We identified that the FCR rapidly decreases in the early stage of sepsis-induced ALI. The intravital imaging revealed that this decrease resulted from the generation of dead space, which was induced by prolonged neutrophil entrapment within the capillaries. We further showed that the neutrophils had an extended sequestration time and an arrest-like dynamic behaviour, both of which triggered neutrophil aggregates inside the capillaries and arterioles. Finally, we found that Mac-1 (CD11b/CD18) was upregulated in the sequestered neutrophils and that a Mac-1 inhibitor restored the FCR and improved hypoxaemia. Using the intravital lung imaging system, we observed that Mac-1-upregulated neutrophil aggregates led to the generation of dead space in the pulmonary microcirculation that was recovered by a Mac-1 inhibitor in sepsis-induced ALI. Neutrophils induce dead space in the pulmonary microcirculation in sepsis-induced ALI, recovered by a Mac-1 inhibitorhttp://ow.ly/vUzO30nbUyU
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Affiliation(s)
- Inwon Park
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,Dept of Emergency Medicine, Seoul National University Bundang Hospital (SNUBH), Seongnam-si, Republic of Korea
| | - Mingyo Kim
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,Division of Rheumatology, Dept of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - Kibaek Choe
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Eunjoo Song
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Howon Seo
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Yoonha Hwang
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Jinhyo Ahn
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Seung-Hyo Lee
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Jae Hyuk Lee
- Dept of Emergency Medicine, Seoul National University Bundang Hospital (SNUBH), Seongnam-si, Republic of Korea
| | - You Hwan Jo
- Dept of Emergency Medicine, Seoul National University Bundang Hospital (SNUBH), Seongnam-si, Republic of Korea
| | - Kyuseok Kim
- Dept of Emergency Medicine, Seoul National University Bundang Hospital (SNUBH), Seongnam-si, Republic of Korea
| | - Gou Young Koh
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,Center for Vascular Research, Institute for Basic Science (IBS), Daejeon, Republic of Korea.,Joint lead authors
| | - Pilhan Kim
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,Joint lead authors
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28
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Kim J, Park JR, Choi J, Park I, Hwang Y, Bae H, Kim Y, Choi W, Yang JM, Han S, Chung TY, Kim P, Kubota Y, Augustin HG, Oh WY, Koh GY. Tie2 activation promotes choriocapillary regeneration for alleviating neovascular age-related macular degeneration. Sci Adv 2019; 5:eaau6732. [PMID: 30788433 PMCID: PMC6374104 DOI: 10.1126/sciadv.aau6732] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Accepted: 01/03/2019] [Indexed: 05/28/2023]
Abstract
Choriocapillary loss is a major cause of neovascular age-related macular degeneration (NV-AMD). Although vascular endothelial growth factor (VEGF) blockade for NV-AMD has shown beneficial outcomes, unmet medical needs for patients refractory or tachyphylactic to anti-VEGF therapy exist. In addition, the treatment could exacerbate choriocapillary rarefaction, necessitating advanced treatment for fundamental recovery from NV-AMD. In this study, Tie2 activation by angiopoietin-2-binding and Tie2-activating antibody (ABTAA) presents a therapeutic strategy for NV-AMD. Conditional Tie2 deletion impeded choriocapillary maintenance, rendering eyes susceptible to NV-AMD development. Moreover, in a NV-AMD mouse model, ABTAA not only suppressed choroidal neovascularization (CNV) and vascular leakage but also regenerated the choriocapillaris and relieved hypoxia. Conversely, VEGF blockade degenerated the choriocapillaris and exacerbated hypoxia, although it suppressed CNV and vascular leakage. Together, we establish that angiopoietin-Tie2 signaling is critical for choriocapillary maintenance and that ABTAA represents an alternative, combinative therapeutic strategy for NV-AMD by alleviating anti-VEGF adverse effects.
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Affiliation(s)
- Jaeryung Kim
- Center for Vascular Research, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of Korea
| | - Jang Ryul Park
- Department of Mechanical Engineering, KAIST, Daejeon 34141, Republic of Korea
- KI for Health Science and Technology (KIHST), KAIST, Daejeon 34141, Republic of Korea
| | - Jeongwoon Choi
- Center for Vascular Research, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Intae Park
- Center for Vascular Research, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Yoonha Hwang
- KI for Health Science and Technology (KIHST), KAIST, Daejeon 34141, Republic of Korea
- Graduate School of Nanoscience and Technology, KAIST, Daejeon 34141, Republic of Korea
| | - Hosung Bae
- Center for Vascular Research, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Yongjoo Kim
- Department of Mechanical Engineering, KAIST, Daejeon 34141, Republic of Korea
- KI for Health Science and Technology (KIHST), KAIST, Daejeon 34141, Republic of Korea
| | - WooJhon Choi
- KI for Health Science and Technology (KIHST), KAIST, Daejeon 34141, Republic of Korea
| | - Jee Myung Yang
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Sangyeul Han
- Center for Vascular Research, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Tae-Young Chung
- Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of Korea
| | - Pilhan Kim
- KI for Health Science and Technology (KIHST), KAIST, Daejeon 34141, Republic of Korea
- Graduate School of Nanoscience and Technology, KAIST, Daejeon 34141, Republic of Korea
| | - Yoshiaki Kubota
- The Laboratory of Vascular Biology, School of Medicine, Keio University, Tokyo 160-8582, Japan
| | - Hellmut G. Augustin
- European Center for Angioscience (ECAS), Medical Faculty Mannheim, Heidelberg University, Mannheim 68167, Germany
- Division of Vascular Oncology and Metastasis, German Cancer Research Center, DKFZ-ZMBH Alliance, Heidelberg 69121, Germany
| | - Wang-Yuhl Oh
- Department of Mechanical Engineering, KAIST, Daejeon 34141, Republic of Korea
- KI for Health Science and Technology (KIHST), KAIST, Daejeon 34141, Republic of Korea
| | - Gou Young Koh
- Center for Vascular Research, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
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29
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Hwang Y, Hyun K, Park S, Lee H, Park I, Kim Y, Kang C. P2.16-28 Comparison of Outcomes of VATS Segmentectomy Versus Lobectomy for Non-Small Cell Lung Cancer Using a Propensity Score Matching Analysis. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1503] [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: 11/28/2022]
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30
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Lim O, Chung H, Min B, Her J, Hwang Y. Post-transfusion kinetics of allogeneic natural killer cells in patients with malignant lymphoma or advanced solid tumors. Cytotherapy 2018. [DOI: 10.1016/j.jcyt.2018.02.316] [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: 10/17/2022]
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31
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Park I, Choe K, Seo H, Hwang Y, Song E, Ahn J, Hwan Jo Y, Kim P. Intravital imaging of a pulmonary endothelial surface layer in a murine sepsis model. Biomed Opt Express 2018; 9:2383-2393. [PMID: 29760995 PMCID: PMC5946796 DOI: 10.1364/boe.9.002383] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 04/16/2018] [Accepted: 04/20/2018] [Indexed: 05/18/2023]
Abstract
Direct intravital imaging of an endothelial surface layer (ESL) in pulmonary microcirculation could be a valuable approach to investigate the role of a vascular endothelial barrier in various pathological conditions. Despite its importance as a marker of endothelial cell damage and impairment of the vascular system, in vivo visualization of ESL has remained a challenging technical issue. In this work, we implemented a pulmonary microcirculation imaging system integrated to a custom-design video-rate laser scanning confocal microscopy platform. Using the system, a real-time cellular-level microscopic imaging of the lung was successfully performed, which facilitated a clear identification of individual flowing erythrocytes in pulmonary capillaries. Subcellular level pulmonary ESL was identified in vivo by fluorescence angiography using a dextran conjugated fluorophore to label blood plasma and the red blood cell (RBC) exclusion imaging analysis. Degradation of ESL width was directly evaluated in a murine sepsis model in vivo, suggesting an impairment of pulmonary vascular endothelium and endothelial barrier dysfunction.
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Affiliation(s)
- Inwon Park
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, South Korea
| | - Kibaek Choe
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, South Korea
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, South Korea
| | - Howon Seo
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, South Korea
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, South Korea
| | - Yoonha Hwang
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, South Korea
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, South Korea
| | - Eunjoo Song
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, South Korea
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, South Korea
| | - Jinhyo Ahn
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, South Korea
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, South Korea
| | - You Hwan Jo
- Department of Emergency Medicine, Seoul National University Bundang Hospital (SNUBH), 82 Gumi-ro, 173 Beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620
- Department of Emergency Medicine, Seoul National University College of Medicine (SNUCM), 103 Daehak-ro, Jongno-gu, Seoul, 03080, South Korea
| | - Pilhan Kim
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, South Korea
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, South Korea
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, South Korea
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32
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Kim JY, Yi MH, Hwang Y, Lee JY, Lee IY, Yong D, Yong TS. 16S rRNA profiling of the Dermatophagoides farinae
core microbiome: Enterococcus
and Bartonella. Clin Exp Allergy 2018; 48:607-610. [DOI: 10.1111/cea.13104] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- J. Y. Kim
- Department of Environmental Medical Biology; Institute of Tropical Medicine, and Arthropods of Medical Importance Resource Bank; Yonsei University College of Medicine; Seoul Korea
- Brain Korea 21 PLUS Project for Medical Science; Yonsei University College of Medicine; Seoul Korea
| | - M.-H. Yi
- Department of Environmental Medical Biology; Institute of Tropical Medicine, and Arthropods of Medical Importance Resource Bank; Yonsei University College of Medicine; Seoul Korea
| | - Y. Hwang
- Brain Korea 21 PLUS Project for Medical Science; Yonsei University College of Medicine; Seoul Korea
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance; Yonsei University College of Medicine; Seoul Korea
| | - J. Y. Lee
- Department of Environmental Medical Biology; Institute of Tropical Medicine, and Arthropods of Medical Importance Resource Bank; Yonsei University College of Medicine; Seoul Korea
- Brain Korea 21 PLUS Project for Medical Science; Yonsei University College of Medicine; Seoul Korea
| | - I.-Y. Lee
- Department of Environmental Medical Biology; Institute of Tropical Medicine, and Arthropods of Medical Importance Resource Bank; Yonsei University College of Medicine; Seoul Korea
| | - D. Yong
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance; Yonsei University College of Medicine; Seoul Korea
| | - T.-S. Yong
- Department of Environmental Medical Biology; Institute of Tropical Medicine, and Arthropods of Medical Importance Resource Bank; Yonsei University College of Medicine; Seoul Korea
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33
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Oh BJ, Jin SM, Hwang Y, Choi JM, Lee HS, Kim G, Kim G, Park HJ, Kim P, Kim SJ, Kim JH. Highly Angiogenic, Nonthrombogenic Bone Marrow Mononuclear Cell-Derived Spheroids in Intraportal Islet Transplantation. Diabetes 2018; 67:473-485. [PMID: 29298810 DOI: 10.2337/db17-0705] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2017] [Accepted: 12/24/2017] [Indexed: 11/13/2022]
Abstract
Highly angiogenic bone marrow mononuclear cell-derived spheroids (BM-spheroids), formed by selective proliferation of the CD31+CD14+CD34+ monocyte subset via three-dimensional (3D) culture, have had robust angiogenetic capacity in rodent syngeneic renal subcapsular islet transplantation. We wondered whether the efficacy of BM-spheroids could be demonstrated in clinically relevant intraportal islet transplantation models without increasing the risk of portal thrombosis. The thrombogenic potential of intraportally infused BM-spheroids was compared with that of mesenchymal stem cells (MSCs) and MSC-derived spheroids (MSC-spheroids). The angiogenic efficacy and persistence in portal sinusoids of BM-spheroids were examined in rodent syngeneic and primate allogeneic intraportal islet transplantation models. In contrast to MSCs and MSC-spheroids, intraportal infusion of BM-spheroids did not evoke portal thrombosis. BM-spheroids had robust angiogenetic capacity in both the rodent and primate intraportal islet transplantation models and improved posttransplant glycemic outcomes. MRI and intravital microscopy findings revealed the persistence of intraportally infused BM-spheroids in portal sinusoids. Intraportal cotransplantation of allogeneic islets with autologous BM-spheroids in nonhuman primates further confirmed the clinical feasibility of this approach. In conclusion, cotransplantation of BM-spheroids enhances intraportal islet transplantation outcome without portal thrombosis in mice and nonhuman primates. Generating BM-spheroids by 3D culture prevented the rapid migration and disappearance of intraportally infused therapeutic cells.
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MESH Headings
- Animals
- Biomarkers/blood
- Biomarkers/metabolism
- Bone Marrow Transplantation/adverse effects
- Cell Tracking
- Cells, Cultured
- Diabetes Mellitus, Experimental/immunology
- Diabetes Mellitus, Experimental/metabolism
- Diabetes Mellitus, Experimental/pathology
- Diabetes Mellitus, Experimental/therapy
- Green Fluorescent Proteins/genetics
- Green Fluorescent Proteins/metabolism
- Islets of Langerhans Transplantation/adverse effects
- Islets of Langerhans Transplantation/immunology
- Leukocytes, Mononuclear/cytology
- Leukocytes, Mononuclear/immunology
- Leukocytes, Mononuclear/transplantation
- Liver/immunology
- Liver/metabolism
- Liver/pathology
- Macaca fascicularis
- Male
- Mesenchymal Stem Cell Transplantation/adverse effects
- Mice, Inbred C57BL
- Mice, Transgenic
- Neovascularization, Pathologic/etiology
- Neovascularization, Pathologic/immunology
- Neovascularization, Pathologic/pathology
- Neovascularization, Pathologic/prevention & control
- Portal Vein
- Spheroids, Cellular/cytology
- Spheroids, Cellular/immunology
- Spheroids, Cellular/transplantation
- Streptozocin
- Thrombosis/etiology
- Thrombosis/immunology
- Thrombosis/pathology
- Thrombosis/prevention & control
- Transplantation, Heterotopic/adverse effects
- Transplantation, Isogeneic/adverse effects
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Affiliation(s)
- Bae Jun Oh
- Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
- Stem Cell and Regenerative Medicine Institute, Samsung Medical Center, Seoul, Republic of Korea
| | - Sang-Man Jin
- Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
- Stem Cell and Regenerative Medicine Institute, Samsung Medical Center, Seoul, Republic of Korea
| | - Yoonha Hwang
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
| | - Jin Myung Choi
- Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
- Stem Cell and Regenerative Medicine Institute, Samsung Medical Center, Seoul, Republic of Korea
| | - Han-Sin Lee
- Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
- Stem Cell and Regenerative Medicine Institute, Samsung Medical Center, Seoul, Republic of Korea
| | - Gyuri Kim
- Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
- Stem Cell and Regenerative Medicine Institute, Samsung Medical Center, Seoul, Republic of Korea
| | - Geunsoo Kim
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Hyo Jun Park
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Pilhan Kim
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
| | - Sung Joo Kim
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Jae Hyeon Kim
- Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
- Stem Cell and Regenerative Medicine Institute, Samsung Medical Center, Seoul, Republic of Korea
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology, Seoul, Republic of Korea
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34
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Ogata K, Jeon S, Ko DS, Jung IS, Kim JH, Ito K, Kubo Y, Takei K, Saito S, Cho YH, Park H, Jang J, Kim HG, Kim JH, Kim YS, Choi W, Koh M, Uosaki K, Doo SG, Hwang Y, Han S. Evolving affinity between Coulombic reversibility and hysteretic phase transformations in nano-structured silicon-based lithium-ion batteries. Nat Commun 2018; 9:479. [PMID: 29396479 PMCID: PMC5797158 DOI: 10.1038/s41467-018-02824-w] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [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: 02/12/2017] [Accepted: 01/02/2018] [Indexed: 11/09/2022] Open
Abstract
Nano-structured silicon is an attractive alternative anode material to conventional graphite in lithium-ion batteries. However, the anode designs with higher silicon concentrations remain to be commercialized despite recent remarkable progress. One of the most critical issues is the fundamental understanding of the lithium-silicon Coulombic efficiency. Particularly, this is the key to resolve subtle yet accumulatively significant alterations of Coulombic efficiency by various paths of lithium-silicon processes over cycles. Here, we provide quantitative and qualitative insight into how the irreversible behaviors are altered by the processes under amorphous volume changes and hysteretic amorphous-crystalline phase transformations. Repeated latter transformations over cycles, typically featured as a degradation factor, can govern the reversibility behaviors, improving the irreversibility and eventually minimizing cumulative irreversible lithium consumption. This is clearly different from repeated amorphous volume changes with different lithiation depths. The mechanism behind the correlations is elucidated by electrochemical and structural probing.
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Affiliation(s)
- K Ogata
- Samsung Advanced Institute of Technology, Samsung Electronics, Samsung-ro 130, Suwon, Gyeonggi-do, 16678, Korea.
- Samsung Research Institute of Japan, Samsung Electronics, 2-1-11, Senba-nishi, Mino-shi, Osaka-fu, 562-0036, Japan.
| | - S Jeon
- Samsung Advanced Institute of Technology, Samsung Electronics, Samsung-ro 130, Suwon, Gyeonggi-do, 16678, Korea.
| | - D-S Ko
- Samsung Advanced Institute of Technology, Samsung Electronics, Samsung-ro 130, Suwon, Gyeonggi-do, 16678, Korea
| | - I S Jung
- Samsung Advanced Institute of Technology, Samsung Electronics, Samsung-ro 130, Suwon, Gyeonggi-do, 16678, Korea
| | - J H Kim
- Samsung Advanced Institute of Technology, Samsung Electronics, Samsung-ro 130, Suwon, Gyeonggi-do, 16678, Korea
| | - K Ito
- C4GR-GREEN, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Y Kubo
- C4GR-GREEN, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - K Takei
- Samsung Advanced Institute of Technology, Samsung Electronics, Samsung-ro 130, Suwon, Gyeonggi-do, 16678, Korea
| | - S Saito
- Samsung Research Institute of Japan, Samsung Electronics, 2-1-11, Senba-nishi, Mino-shi, Osaka-fu, 562-0036, Japan
| | - Y-H Cho
- Samsung Advanced Institute of Technology, Samsung Electronics, Samsung-ro 130, Suwon, Gyeonggi-do, 16678, Korea
| | - H Park
- Samsung Advanced Institute of Technology, Samsung Electronics, Samsung-ro 130, Suwon, Gyeonggi-do, 16678, Korea
| | - J Jang
- Samsung Advanced Institute of Technology, Samsung Electronics, Samsung-ro 130, Suwon, Gyeonggi-do, 16678, Korea
| | - H-G Kim
- Samsung Advanced Institute of Technology, Samsung Electronics, Samsung-ro 130, Suwon, Gyeonggi-do, 16678, Korea
| | - J-H Kim
- Samsung Advanced Institute of Technology, Samsung Electronics, Samsung-ro 130, Suwon, Gyeonggi-do, 16678, Korea
| | - Y S Kim
- Samsung Advanced Institute of Technology, Samsung Electronics, Samsung-ro 130, Suwon, Gyeonggi-do, 16678, Korea
| | - W Choi
- Samsung Advanced Institute of Technology, Samsung Electronics, Samsung-ro 130, Suwon, Gyeonggi-do, 16678, Korea
| | - M Koh
- Samsung Advanced Institute of Technology, Samsung Electronics, Samsung-ro 130, Suwon, Gyeonggi-do, 16678, Korea
| | - K Uosaki
- C4GR-GREEN, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - S G Doo
- Samsung Advanced Institute of Technology, Samsung Electronics, Samsung-ro 130, Suwon, Gyeonggi-do, 16678, Korea
| | - Y Hwang
- Samsung Advanced Institute of Technology, Samsung Electronics, Samsung-ro 130, Suwon, Gyeonggi-do, 16678, Korea
| | - S Han
- Samsung Advanced Institute of Technology, Samsung Electronics, Samsung-ro 130, Suwon, Gyeonggi-do, 16678, Korea.
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35
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Park I, Kim M, Song E, Choe K, Hwang Y, Seo H, Ahn J, Koh GY, Kim P. 1457: CAPILLARY ENTRAPMENT OF MAC-1+ NEUTROPHIL DISTURBS PULMONARY MICROCIRCULATION IN SEPSIS-INDUCED ARDS. Crit Care Med 2018. [DOI: 10.1097/01.ccm.0000529459.14581.32] [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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36
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Hwang Y, Yoon H, Choe K, Ahn J, Jung JH, Park JH, Kim P. In vivo cellular-level real-time pharmacokinetic imaging of free-form and liposomal indocyanine green in liver. Biomed Opt Express 2017; 8:4706-4716. [PMID: 29082096 PMCID: PMC5654811 DOI: 10.1364/boe.8.004706] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 09/13/2017] [Accepted: 09/15/2017] [Indexed: 05/18/2023]
Abstract
Indocyanine green (ICG) is a near-infrared fluorophore approved for human use which has been widely used for various clinical applications. Despite the well-established clinical usage, our understanding about the microscopic in vivo pharmacokinetics of systemically administered ICG has been relatively limited. In this work, we successfully visualized real-time in vivo pharmacokinetic dynamics of the intravenously injected free-form and liposomal ICG in cellular resolution by utilizing a custom-built video-rate near infrared laser-scanning confocal microscopy system. Initial perfusion and clearance from blood stream, diffusion into perisinusoidal space, and subsequent absorption into hepatocyte were directly visualized in vivo. The quantification analysis utilizing the real-time image sequences revealed distinct dynamic in vivo pharmacokinetic behavior of free-form and liposomal ICG.
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Affiliation(s)
- Yoonha Hwang
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Daejeon, 34141, South Korea
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Daejeon, 34141, South Korea
| | - Hwanjun Yoon
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Daejeon, 34141, South Korea
- Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Daejeon, 34141, South Korea
| | - Kibaek Choe
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Daejeon, 34141, South Korea
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Daejeon, 34141, South Korea
| | - Jinhyo Ahn
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Daejeon, 34141, South Korea
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Daejeon, 34141, South Korea
| | - Jik Han Jung
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Daejeon, 34141, South Korea
- Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Daejeon, 34141, South Korea
| | - Ji-Ho Park
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Daejeon, 34141, South Korea
- Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Daejeon, 34141, South Korea
| | - Pilhan Kim
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Daejeon, 34141, South Korea
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Daejeon, 34141, South Korea
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37
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Song T, Moon S, Park B, Hwang Y, Song E, Kim H, Hong G. FEASIBILITY OF VIRTUAL REALITY EXPERIENCE OF NATURE AS A NURSING INTERVENTION. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- T. Song
- Hanyang University, Seoul, Korea (the Republic of)
| | - S. Moon
- Hanyang University, Seoul, Korea (the Republic of)
| | - B. Park
- Hanyang University, Seoul, Korea (the Republic of)
| | - Y. Hwang
- Hanyang University, Seoul, Korea (the Republic of)
| | - E. Song
- Hanyang University, Seoul, Korea (the Republic of)
| | - H. Kim
- Hanyang University, Seoul, Korea (the Republic of)
| | - G. Hong
- Hanyang University, Seoul, Korea (the Republic of)
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38
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Park JR, Choi W, Hong HK, Kim Y, Jun Park S, Hwang Y, Kim P, Joon Woo S, Hyung Park K, Oh WY. Imaging Laser-Induced Choroidal Neovascularization in the Rodent Retina Using Optical Coherence Tomography Angiography. Invest Ophthalmol Vis Sci 2017; 57:OCT331-40. [PMID: 27409490 DOI: 10.1167/iovs.15-18946] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
PURPOSE The purpose of this study was to evaluate the performance of optical coherence tomography angiography (OCTA) in visualizing laser-induced choroidal neovascularization (CNV) in the rodent retina. METHODS Choroidal neovascularization was induced via laser photocoagulation in 2 male Brown Norway rats and 2 male C57BL/6 mice. For qualitative comparison, the animals were imaged in vivo with OCTA, indocyanine green angiography (ICGA), and fluorescein angiography (FA), and ex vivo with immunofluorescence confocal microscopy, 14 days post laser photocoagulation without anti-vascular endothelial growth factor (anti-VEGF) intervention. For longitudinal quantitative analysis, CNV was induced in 6 additional male C57BL/6 mice. Three mice intravitreally received an anti-VEGF agent and the remaining 3 mice phosphate buffered saline (PBS) vehicle 7 days post laser photocoagulation. These animals were imaged using OCTA 6, 14, and 21 days post laser photocoagulation. The area and volume of the laser-induced CNV lesions were measured longitudinally. RESULTS In both mice and rats, OCTA qualitatively showed high correlation with FA, ICGA, and immunofluorescence imaging. Unlike FA and ICGA, which does not show the microvasculature due to dye leakage, OCTA visualized the CNV microvasculature with resolution and contrast comparable to immunofluorescence images. Longitudinal imaging enabled normalization of the CNV area and volume, reducing inherent variation in the CNV size. By using only 3 mice in each group, statistically significant differences (P < 0.01) in the CNV area and volume could be demonstrated. CONCLUSIONS Optical coherence tomography angiography enables noninvasive visualization of the laser-induced CNV microvasculature in the rodent retina with high resolution and tissue-lumen contrast, providing quantifiable in vivo measurements for longitudinal analysis.
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Affiliation(s)
- Jang Ryul Park
- Department of Mechanical Engineering Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - WooJhon Choi
- Department of Mechanical Engineering Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea 2Information and Electronics Research Institute, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of K
| | - Hye Kyoung Hong
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul National University Bundang Hospital (SNUBH), Bundang-gu, Seongnam, Gyeonggi-do, Republic of Korea
| | - Yongjoo Kim
- Department of Mechanical Engineering Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Sang Jun Park
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul National University Bundang Hospital (SNUBH), Bundang-gu, Seongnam, Gyeonggi-do, Republic of Korea
| | - Yoonha Hwang
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Pilhan Kim
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Se Joon Woo
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul National University Bundang Hospital (SNUBH), Bundang-gu, Seongnam, Gyeonggi-do, Republic of Korea
| | - Kyu Hyung Park
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul National University Bundang Hospital (SNUBH), Bundang-gu, Seongnam, Gyeonggi-do, Republic of Korea
| | - Wang-Yuhl Oh
- Department of Mechanical Engineering Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
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39
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Lee JY, Hwang Y, Kim JH, Kim YS, Jung BK, Kim P, Lee H. In Vivo Fluorescence Retinal Imaging Following AAV2-Mediated Gene Delivery in the Rat Retina. Invest Ophthalmol Vis Sci 2017; 57:3390-6. [PMID: 27367507 DOI: 10.1167/iovs.15-18862] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
PURPOSE The purpose of this study was to evaluate longitudinal gene expression patterns by retinal imaging using a modified custom-built confocal laser-scanning microscope in experimental rats after intravitreal injection of recombinant adeno-associated virus 2 (rAAV2-green fluorescent protein [GFP]). METHODS Ten 9-week-old Wistar rats were divided into two groups: experimental group (group 1) that received a rAAV2-GFP intravitreal injection and control group (group 2) that received a vehicle. After anesthesia using a Zoletil intraperitoneal injection, 8 μL rAAV2-GFP in group 1 or vehicle in group 2 was injected intravitreally using a 33-G Hamilton syringe. In vivo fluorescence retinal images were acquired under anesthesia at 2, 4, 6, and 13 days after rAAV or vehicle delivery. RESULTS Differences in GFP fluorescence were identified starting from day 2 after the intravitreal injection of rAAV2-GFP in group 1. Between days 4 and 6, the intensity and area of fluorescence in the retina began to increase and peaked at day 13. Based on the pattern of GFP expression, the axon of the nerve fiber layer ganglion cell was identified. In group 2, eyes treated with the vehicle showed a small amount of autofluorescence in a limited area for up to 2 weeks, with no increase in intensity during this period. CONCLUSIONS In vivo retinal imaging confirmed gene expression within 2 weeks after the intravitreal injection of rAAV2-GFP. Gene transfer and expression in the rat retina occurs quickly in 2 days and appears to peak within 2 weeks of gene delivery. In vivo retinal imaging may be a useful noninvasive tool to continuously monitor gene expression in the retina over time.
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Affiliation(s)
- Joo Yong Lee
- Department of Ophthalmology, Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Korea
| | - Yoonha Hwang
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology, Daejeon, Korea 3KI for Health Science and Technology, Korea Advanced Institute of Science and Technology, Daejeon, Korea
| | - Ji Hyun Kim
- Department of Microbiology, University of Ulsan, College of Medicine, Seoul, Korea 5Cellular Dysfunction Research Center, University of Ulsan, College of Medicine, Seoul, Korea
| | - Yu Sun Kim
- Department of Ophthalmology, Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Korea
| | - Bok Kyoung Jung
- Department of Ophthalmology, Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Korea
| | - Pilhan Kim
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology, Daejeon, Korea 3KI for Health Science and Technology, Korea Advanced Institute of Science and Technology, Daejeon, Korea
| | - Heuiran Lee
- Department of Microbiology, University of Ulsan, College of Medicine, Seoul, Korea 5Cellular Dysfunction Research Center, University of Ulsan, College of Medicine, Seoul, Korea
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40
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Song W, Hwang Y, Youngblood VM, Cook RS, Balko JM, Chen J, Brantley-Sieders DM. Targeting EphA2 impairs cell cycle progression and growth of basal-like/triple-negative breast cancers. Oncogene 2017; 36:5620-5630. [PMID: 28581527 PMCID: PMC5629103 DOI: 10.1038/onc.2017.170] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [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: 11/10/2016] [Revised: 04/27/2017] [Accepted: 05/01/2017] [Indexed: 02/06/2023]
Abstract
Basal-like/triple-negative breast cancers (TNBCs) are among the most aggressive forms of breast cancer, and disproportionally affects young premenopausal women and women of African descent. Patients with TNBC suffer a poor prognosis due in part to a lack of molecularly targeted therapies, which represents a critical barrier for effective treatment. Here, we identify EphA2 receptor tyrosine kinase as a clinically relevant target for TNBC. EphA2 expression is enriched in the basal-like molecular subtype in human breast cancers. Loss of EphA2 function in both human and genetically engineered mouse models of TNBC reduced tumor growth in culture and in vivo. Mechanistically, targeting EphA2 impaired cell cycle progression through S-phase via downregulation of c-Myc and stabilization of the cyclin-dependent kinase inhibitor p27/KIP1. A small molecule kinase inhibitor of EphA2 effectively suppressed tumor cell growth in vivo, including TNBC patient-derived xenografts. Thus, our data identify EphA2 as a novel molecular target for TNBC.
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Affiliation(s)
- W Song
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Y Hwang
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - V M Youngblood
- Department of Cancer Biology, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - R S Cook
- Department of Cancer Biology, Vanderbilt University School of Medicine, Nashville, TN, USA.,Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - J M Balko
- Department of Cancer Biology, Vanderbilt University School of Medicine, Nashville, TN, USA.,Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - J Chen
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN, USA.,Department of Cancer Biology, Vanderbilt University School of Medicine, Nashville, TN, USA.,Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN, USA.,Department of Cellular and Developmental Biology, Vanderbilt University School of Medicine, Nashville, TN, USA.,Veterans Affairs Medical Center, Tennessee Valley Healthcare System, Nashville, TN, USA
| | - D M Brantley-Sieders
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN, USA.,Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN, USA
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41
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Kim J, Yoo M, Park H, Yu Y, Jo I, Park D, Hwang Y. Immunosuppressive effects of tonsil derived mesenchymal stem cells by proinflammatory cytokines. Cytotherapy 2017. [DOI: 10.1016/j.jcyt.2017.02.088] [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: 10/19/2022]
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42
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Lim O, Choi H, Chung H, Min B, Her J, Cho S, Hwang Y. Clinical efficacy of killer cell immunoglobulin-like receptor ligand-mismatched allogeneic natural killer cells in patients with malignant lymphoma or advanced solid tumors. Cytotherapy 2017. [DOI: 10.1016/j.jcyt.2017.02.089] [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: 11/27/2022]
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43
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Her J, Lee E, Gwon S, Cho S, Hwang Y. Effect of MG4101, random donor derived, ex vivo-expanded NK cells, in combination with Rituximab in B cell Lymphoma model. Cytotherapy 2017. [DOI: 10.1016/j.jcyt.2017.02.085] [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: 11/15/2022]
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44
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Ogura S, Kurata K, Hattori Y, Takase H, Ishiguro-Oonuma T, Hwang Y, Ahn S, Park I, Ikeda W, Kusuhara S, Fukushima Y, Nara H, Sakai H, Fujiwara T, Matsushita J, Ema M, Hirashima M, Minami T, Shibuya M, Takakura N, Kim P, Miyata T, Ogura Y, Uemura A. Sustained inflammation after pericyte depletion induces irreversible blood-retina barrier breakdown. JCI Insight 2017; 2:e90905. [PMID: 28194443 DOI: 10.1172/jci.insight.90905] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
In the central nervous system, endothelial cells (ECs) and pericytes (PCs) of blood vessel walls cooperatively form a physical and chemical barrier to maintain neural homeostasis. However, in diabetic retinopathy (DR), the loss of PCs from vessel walls is assumed to cause breakdown of the blood-retina barrier (BRB) and subsequent vision-threatening vascular dysfunctions. Nonetheless, the lack of adequate DR animal models has precluded disease understanding and drug discovery. Here, by using an anti-PDGFRβ antibody, we show that transient inhibition of the PC recruitment to developing retinal vessels sustained EC-PC dissociations and BRB breakdown in adult mouse retinas, reproducing characteristic features of DR such as hyperpermeability, hypoperfusion, and neoangiogenesis. Notably, PC depletion directly induced inflammatory responses in ECs and perivascular infiltration of macrophages, whereby macrophage-derived VEGF and placental growth factor (PlGF) activated VEGFR1 in macrophages and VEGFR2 in ECs. Moreover, angiopoietin-2 (Angpt2) upregulation and Tie1 downregulation activated FOXO1 in PC-free ECs locally at the leaky aneurysms. This cycle of vessel damage was shut down by simultaneously blocking VEGF, PlGF, and Angpt2, thus restoring the BRB integrity. Together, our model provides new opportunities for identifying the sequential events triggered by PC deficiency, not only in DR, but also in various neurological disorders.
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Affiliation(s)
- Shuntaro Ogura
- Department of Retinal Vascular Biology.,Department of Ophthalmology and Visual Sciences, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | | | - Yuki Hattori
- Department of Anatomy and Cell Biology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Hiroshi Takase
- Core Laboratory, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Toshina Ishiguro-Oonuma
- Laboratory of Veterinary Physiology, Cooperative Department of Veterinary Medicine, Faculty of Agriculture, Iwate University, Morioka, Japan
| | - Yoonha Hwang
- Graduate School of Nanoscience and Technology, and
| | - Soyeon Ahn
- Graduate School of Nanoscience and Technology, and
| | - Inwon Park
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
| | | | - Sentaro Kusuhara
- Division of Ophthalmology, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yoko Fukushima
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Hiromi Nara
- Drug Discovery Research, Astellas Pharma Inc., Tsukuba, Japan
| | - Hideto Sakai
- Drug Discovery Research, Astellas Pharma Inc., Tsukuba, Japan
| | - Takashi Fujiwara
- Faculty of Nursing, Hiroshima Bunka Gakuen University, Kure, Japan
| | - Jun Matsushita
- Department of Stem Cells and Human Disease Models, Research Center for Animal Life Science, Shiga University of Medical Science, Otsu, Japan
| | - Masatsugu Ema
- Department of Stem Cells and Human Disease Models, Research Center for Animal Life Science, Shiga University of Medical Science, Otsu, Japan
| | - Masanori Hirashima
- Division of Vascular Biology, Department of Physiology and Cell Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Takashi Minami
- Division of Phenotype Disease Analysis, Institute of Resource Development and Analysis, Kumamoto University, Kumamoto, Japan
| | - Masabumi Shibuya
- Institute of Physiology and Medicine, Jobu University, Takasaki, Japan
| | - Nobuyuki Takakura
- Department of Signal Transduction, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Pilhan Kim
- Graduate School of Nanoscience and Technology, and
| | - Takaki Miyata
- Department of Anatomy and Cell Biology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yuichiro Ogura
- Department of Ophthalmology and Visual Sciences, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Akiyoshi Uemura
- Department of Retinal Vascular Biology.,Department of Ophthalmology and Visual Sciences, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
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45
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Hwang Y, Al-Arabiat M, Shin D, Lee Y. Corrigendum to “Understanding information proactiveness and the content management system adoption in pre-implementation stage” [Computers in Human Behavior 64 (2016) 515–523]. Computers in Human Behavior 2017. [DOI: 10.1016/j.chb.2016.10.013] [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: 11/17/2022]
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46
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Hwang Y, Kang JS, Kim BK, Kim SW. Colonization of Staphylococcus aureusand sensitivity to antibiotics in children with atopic dermatitis. Allergy Asthma Respir Dis 2017. [DOI: 10.4168/aard.2017.5.1.21] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Yoonha Hwang
- Department of Pediatrics, Busan St. Mary's Hospital, Busan, Korea
| | - Joon Seok Kang
- Department of Pediatrics, Busan St. Mary's Hospital, Busan, Korea
| | - Byoung Kuk Kim
- Department of Pediatrics, Busan St. Mary's Hospital, Busan, Korea
| | - Sung Won Kim
- Department of Pediatrics, Busan St. Mary's Hospital, Busan, Korea
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47
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Kim S, Hwang Y, Lee D, Webster MJ. Transcriptome sequencing of the choroid plexus in schizophrenia. Transl Psychiatry 2016; 6:e964. [PMID: 27898074 PMCID: PMC5290353 DOI: 10.1038/tp.2016.229] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 09/19/2015] [Accepted: 09/28/2016] [Indexed: 01/11/2023] Open
Abstract
The choroid plexus (CP) has a key role in maintaining brain homeostasis by producing cerebrospinal fluid (CSF), by mediating transport of nutrients and removing metabolic products from the central nervous system and by responding to peripheral inflammatory signals. Although abnormal markers of immune response and inflammation are apparent in individuals with schizophrenia, the CP of these individuals has not been characterized. We therefore sequenced mRNA from the CP from two independent collections of individuals with schizophrenia and unaffected controls. Genes related to immune function and inflammation were upregulated in both collections. In addition, a co-expression module related to immune/inflammation response that was generated by combining mRNA-Seq data from both collections was significantly associated with disease status. The immune/inflammation-related co-expression module was positively correlated with levels of C-reactive protein (CRP), cortisol and several immune modulator proteins in the serum of the same individuals and was also positively correlated with CRP, cortisol and pro-inflammatory cytokines in the frontal cortex of the same individuals. In addition, we found a substantial number of nodes (genes) that were common to our schizophrenia-associated immune/inflammation module from the pooled data and a module we generated from lippopolysaccharides-treated mouse model data. These results suggest that the CP of individuals with schizophrenia are responding to signals from the periphery by upregulating immune/inflammation-related genes to protect the brain and maintain the homeostasis but nevertheless fails to completely prevent immune/inflammation related changes in the brain.
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Affiliation(s)
- S Kim
- Stanley Brain Research Laboratory, Stanley Medical Research Institute, Rockville, MD, USA
| | - Y Hwang
- Department of Bio and Brain Engineering, KAIST, Daejeon, Korea
| | - D Lee
- Department of Bio and Brain Engineering, KAIST, Daejeon, Korea,Department of Bio and Brain Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Korea E-mail:
| | - M J Webster
- Stanley Brain Research Laboratory, Stanley Medical Research Institute, Rockville, MD, USA,Stanley Brain Research Laboratory, Stanley Medical Research Institute, 9800 Medical Center Drive, Suite C-050, Rockville, MD 20850, USA. E-mail:
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48
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Park S, Kim E, Hwang Y, Lee H, Park I, Kim Y, Kang C. F-031EVALUATION OF CHEST WALL MORPHOLOGY BY CHEST COMPUTER TOMOGRAPHY AFTER MINIMALLY INVASIVE REPAIR OF PECTUS EXCAVATUM. Interact Cardiovasc Thorac Surg 2016. [DOI: 10.1093/icvts/ivw260.31] [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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49
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Park S, Kim E, Hwang Y, Lee H, Park I, Kim Y, Kang C. P-180THORACIC METASTASECTOMY IN HEPATOCELLULAR CARCINOMA: COMPARATIVE STUDY BETWEEN LIVER TRANSPLANTATION AND LOCO-REGIONAL TREATMENT. Interact Cardiovasc Thorac Surg 2016. [DOI: 10.1093/icvts/ivw260.178] [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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50
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Chung H, Choi H, Kim H, Lee S, Min B, Hwang Y. Ex-Vivo Expansion of NK Cells From Umbilical Cord Blood Mononuclear Cells for Anticancer Therapy Using the Lymphoma Cell Line. Cytotherapy 2016. [DOI: 10.1016/j.jcyt.2016.03.195] [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: 10/21/2022]
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