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Chang HW, Park JJ, Lee WH, Kim SH, Lee JC, Nam HY, Kim MR, Han MW, Lee YS, Kim SY, Kim SW. Enhancer of zeste homolog 2 (EZH2)-dependent sirtuin-3 determines sensitivity to glucose starvation in radioresistant head and neck cancer cells. Cell Signal 2024; 115:111029. [PMID: 38163576 DOI: 10.1016/j.cellsig.2023.111029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 12/18/2023] [Accepted: 12/29/2023] [Indexed: 01/03/2024]
Abstract
Sirtuin 3 (SIRT3) regulates mitochondrial function as a mitochondrial deacetylase during oxidative stress. However, the specific regulatory mechanism and function of SIRT3 in radioresistant cancer cells are unclear. In this study, we aim to investigate how SIRT3 determines the susceptibility to glucose deprivation and its regulation in p53-based radioresistant head and neck cancer cells. We observed mitochondrial function using two established isogenic radioresistant subclones (HN3R-A [p53 null] and HN3R-B [p53 R282W]) with intratumoral p53 heterogeneity. Cell counting analysis was performed to evaluate cell proliferation and cell death. The correlation between the regulation of SIRT3 and enhancer of zeste homolog 2 (EZH2) was confirmed by immunoblotting and chromatin immunoprecipitation assay. p53-deficient radioresistant cells (HN3R-A) expression reduced SIRT3 levels and increased sensitivity to glucose deprivation due to mitochondrial dysfunction compared to other cells. In these cells, activation of SIRT3 significantly prevented glucose deprivation-induced cell death, whereas the loss of SIRT3 increased the susceptibility to glucose deficiency. We discovered that radiation-induced EZH2 directly binds to the SIRT3 promoter and represses the expression. Conversely, inhibiting EZH2 increased the expression of SIRT3 through epigenetic changes. Our findings indicate that p53-deficient radioresistant cells with enhanced EZH2 exhibit increased sensitivity to glucose deprivation due to SIRT3 suppression. The regulation of SIRT3 by EZH2 plays a critical role in determining the cell response to glucose deficiency in radioresistant cancer cells. Therefore, EZH2-dependent SIRT3 could be used as a predictive biomarker to select treatment options for patients with radiation-resistance.
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Affiliation(s)
- Hyo Won Chang
- Department of Biochemistry and Molecular Biology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jung Je Park
- Department of Otolaryngology, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju, Republic of Korea
| | - Won Hyeok Lee
- Department of Otolaryngology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Song Hee Kim
- Department of Otolaryngology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Jong Cheol Lee
- Department of Otolaryngology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Republic of Korea
| | - Hae Yun Nam
- Department of Biochemistry and Molecular Biology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Mi Ra Kim
- Department of Otolaryngology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Republic of Korea
| | - Myung Woul Han
- Department of Otolaryngology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Yoon Se Lee
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | | | - Seong Who Kim
- Department of Biochemistry and Molecular Biology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
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Poudel PB, Dhakal D, Lee JC, Sohng JK. Functional characterization of a naphthalene-O-methyltransferase from Nocardia sp. CS682. Enzyme Microb Technol 2024; 172:110351. [PMID: 37939423 DOI: 10.1016/j.enzmictec.2023.110351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 11/10/2023]
Abstract
Methylation plays important roles in biosynthesis, metabolism, signal transduction, detoxification, protein sorting and repair, and nucleic acid processing. Generally the methyltransferases transfer methyl groups in various natural products using S-adenosyl methionine (SAM) as a cofactor. In this study, we examined and functionally characterized ThnM3 (enzyme), by testing various substrates with different chemical structures. Among the tested substrates, 1,8-dihydroxynaphthalene was the best substrate for methylation. Whole-cell biotransformation was performed using the enzyme in engineered Escherichia coli to produce 8-methoxynaphthalene-1-ol, and 1,8-dimethoxynaphthalene derivatives of 1,8-dihydroxynaphthalene. The products were confirmed using high-performance liquid chromatography, mass spectrometry, and nuclear magnetic resonance spectroscopic analyses. Therefore, this study is the first to amplify, express the thnM3 (gene), and functionally characterize theThnM3, which exhibits the regioselective modifications of 1,8-dihydroxynaphthalene.
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Affiliation(s)
- Purna Bahadur Poudel
- Institute of Biomolecule Reconstruction (iBR), Department of Life Science and Biochemical Engineering, Sun Moon University, 70 Sun Moon-ro 221, Tangjeong-myeon, Asan-si, Chungnam 31460, South Korea
| | - Dipesh Dhakal
- Institute of Biomolecule Reconstruction (iBR), Department of Life Science and Biochemical Engineering, Sun Moon University, 70 Sun Moon-ro 221, Tangjeong-myeon, Asan-si, Chungnam 31460, South Korea
| | - Jong Cheol Lee
- Department of Pharmaceutical Engineering and Biotechnology, Sun Moon University, 70 Sunmoon-ro 221, Tangjeong-myeon, Asan-si, Chungnam 31460, South Korea
| | - Jae Kyung Sohng
- Institute of Biomolecule Reconstruction (iBR), Department of Life Science and Biochemical Engineering, Sun Moon University, 70 Sun Moon-ro 221, Tangjeong-myeon, Asan-si, Chungnam 31460, South Korea; Department of Pharmaceutical Engineering and Biotechnology, Sun Moon University, 70 Sunmoon-ro 221, Tangjeong-myeon, Asan-si, Chungnam 31460, South Korea.
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Irshad MK, Zhu S, Javed W, Lee JC, Mahmood A, Lee SS, Jianying S, Albasher G, Ali A. Risk assessment of toxic and hazardous metals in paddy agroecosystem by biochar-for bio-membrane applications. Chemosphere 2023; 340:139719. [PMID: 37549746 DOI: 10.1016/j.chemosphere.2023.139719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 07/21/2023] [Accepted: 08/01/2023] [Indexed: 08/09/2023]
Abstract
Toxic and carcinogenic metal (loid)s, such arsenic (As) and cadmium (Cd), found in contaminated paddy soils pose a serious danger to environmental sustainability. Their geochemical activities are complex, making it difficult to manage their contamination. Rice grown in Cd and As-polluted soils ends up in people's bellies, where it can cause cancer, anemia, and the deadly itai sickness. Solving this issue calls for research into eco-friendly and cost-effective remediation technology to lower rice's As and Cd levels. This research delves deeply into the origins of As and Cd in paddy soils, as well as their mobility, bioavailability, and uptake mechanisms by rice plants. It also examines the current methods and reactors used to lower As and Cd contamination in rice. Iron-modified biochar (Fe-BC) is a promising technology for reducing As and Cd toxicity in rice, improving soil health, and boosting rice's nutritional value. Biochar's physiochemical characteristics are enhanced by the addition of iron, making it a potent adsorbent for As and Cd ions. In conclusion, Fe-BC's biomembrane properties make them an attractive option for remediating As- and Cd-contaminated paddy soils. More efficient mitigation measures, including the use of biomembrane technology, can be developed when sustainable agriculture practices are combined with these technologies.
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Affiliation(s)
- Muhammad Kashif Irshad
- Department of Environmental Sciences, Government College University Faisalabad, Pakistan; Department of Environmental and Energy Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - Sihang Zhu
- The Key Laboratory of Water and Sediment Sciences, College of Environmental Sciences and Engineering, Peking University, Beijing, China; Agricultural Management Institute, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Wasim Javed
- Punjab Bioenergy Institute, University of Agriculture Faisalabad, Pakistan
| | - Jong Cheol Lee
- Department of Environmental and Energy Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - Abid Mahmood
- Department of Environmental Sciences, Government College University Faisalabad, Pakistan
| | - Sang Soo Lee
- Department of Environmental and Energy Engineering, Yonsei University, Wonju, 26493, Republic of Korea.
| | - Shang Jianying
- Department of Soil and Water Sciences China Agricultural University, Beijing, China.
| | - Gadah Albasher
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Atif Ali
- Department of plant breeding and genetics, University of Agriculture, Faisalabad, Pakistan
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Yibeltal M, Tsunekawa A, Haregeweyn N, Adgo E, Meshesha DT, Zegeye AD, Andualem TG, Oh SJ, Lee JC, Kang MW, Lee SS. Analyzing the contribution of gully erosion to land degradation in the upper Blue Nile basin, Ethiopia. Journal of Environmental Management 2023; 344:118378. [PMID: 37356332 DOI: 10.1016/j.jenvman.2023.118378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 06/09/2023] [Accepted: 06/10/2023] [Indexed: 06/27/2023]
Abstract
Soil erosion has become a worldwide problem that threatens the environment and the future of economic and social development. The purpose of this study is to investigate the contribution of steep slopes and gullies to erosion in high precipitation tropical areas of the Ethiopian highlands. A trapezoidal weir was installed at the head and tail of the gully to monitor the discharge and sediment concentration from 2017 to 2020. Sediment yield and runoff are heavily influenced by the amount and timing of precipitation. The coefficients of variation for total sediment loads ranged from 65.1 to 96.1% at the head and 17.1-78.1% at the tail; the lowest coefficients were found in 2018 and the highest in 2020. Furthermore, 85% of the sediment at the tail comes from the gully, according to the four-year sediment budget. Further, a hysteretic analysis of suspended sediment concentration and runoff revealed that hilly sediment sources are limited (clockwise), then sediment can be transported through the gully via bank failures (counterclockwise). Study findings contributed to a classification of runoff patterns and an investigation of suspended sediment dynamics. In the gully tail, sediment yield was higher than in the head, suggesting gully sediment contributed more to sediment yield than large upland catchments. As a result of the study, we have been able to develop practical recommendations for managing gully erosion in the future.
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Affiliation(s)
- Mesenbet Yibeltal
- Department of Environmental & Energy Engineering, Yonsei University, Republic of Korea; Faculty of Civil and Water Resource Engineering, Bahir Dar University, Ethiopia
| | - Atsushi Tsunekawa
- Arid Land Research Center, Tottori University, 1390 Hamasaka, Tottori, 680-0001, Japan
| | - Nigussie Haregeweyn
- Arid Land Research Center, Tottori University, 1390 Hamasaka, Tottori, 680-0001, Japan
| | - Enyew Adgo
- College of Agriculture and Environmental Sciences, Bahir Dar University, Ethiopia
| | | | | | - Tesfa Gebrie Andualem
- Department of Hydraulic and Water Resources Engineering, Debre Tabor University, Debre Tabor, Ethiopia; UniSA-STEM, University of South Australia, Adelaide, SA 5000, Australia
| | - Se Jin Oh
- Department of Environmental & Energy Engineering, Yonsei University, Republic of Korea
| | - Jong Cheol Lee
- Department of Environmental & Energy Engineering, Yonsei University, Republic of Korea
| | - Min Woo Kang
- Department of Environmental & Energy Engineering, Yonsei University, Republic of Korea
| | - Sang Soo Lee
- Department of Environmental & Energy Engineering, Yonsei University, Republic of Korea.
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Lee JC, Kim GC, Kim SW, Lee NK, Cho YS, Chung SW, Lee YS, Han MW, Chang HW, Byun Y, Kim SY. Letter-to-editor, "Feedback amplification of senolysis using caspase-cleavable peptide-doxorubicin conjugate and 2DG" [Journal of Controlled Release, Volume 346, pp. 158-168, (2022), doi: 10.1016/j.jconrel.2022.04.012]. J Control Release 2023; 362:779-783. [PMID: 37003491 DOI: 10.1016/j.jconrel.2023.03.044] [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] [Received: 03/15/2023] [Accepted: 03/23/2023] [Indexed: 04/03/2023]
Affiliation(s)
- Jong Cheol Lee
- Department of Otorhinolaryngology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung-si, Gangwon-do 25440, Republic of Korea
| | - Gui Chul Kim
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea
| | - Seong Who Kim
- Department of Biochemistry and Molecular Biology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea
| | - Na Kyeong Lee
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, South Korea
| | - Young Seok Cho
- Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul 08826, Republic of Korea
| | - Seung Woo Chung
- Center for Nanomedicine, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21231, United States; Department of Ophthalmology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, United States
| | - Yoon Se Lee
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea
| | - Myung Woul Han
- Department of Otorhinolaryngology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan 44033, Republic of Korea
| | - Hyo Won Chang
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea
| | - Youngro Byun
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, South Korea.
| | - Sang Yoon Kim
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea.
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Son MJ, Kim S, Kim YE, Kim BY, Yeum CS, Lee JC, Cha JH, Kang S, Chang CH, Son S. Clinical effectiveness of decoction form of herbal medicine in primary care treatment of allergic rhinitis: A retrospective cohort study. Integr Med Res 2023; 12:100973. [PMID: 37637186 PMCID: PMC10448014 DOI: 10.1016/j.imr.2023.100973] [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: 11/18/2022] [Revised: 07/06/2023] [Accepted: 07/11/2023] [Indexed: 08/29/2023] Open
Abstract
Background The decoction form of herbal medicine (D-HM) is mainly prescribed to patients with allergic rhinitis (AR) in Korean Medicine (KM) clinics in the Republic of Korea; however, it is difficult to conduct clinical trials of D-HM due to regulatory issues. This study investigated the clinical safety and effectiveness of D-HM combination therapy for the treatment of AR by analyzing the AR outpatient data from 17 KM clinics. Methods This retrospective cohort study included patients who visited KM clinics for AR treatment from January 1, 2021, to March 31, 2022. Cases were collated using structured case report forms and divided into the D-HM with KM usual care group (D-HM group) and the KM usual care group (UC group). Since D-HM therapy could not be randomly assigned to the study population, we used optimal propensity score (PS) matching to investigate the effectiveness and safety of D-HM combination therapy in the treatment of AR. Results Data from 228 patients were collected. After PS matching, 144 patients were finally analyzed. The total nasal symptom score (TNSS) and mini-rhinoconjunctivitis quality of life questionnaire (mini-RQLQ) were significantly improved in the D-HM group compared with those in the UC group (TNSS: p=0.02; mini-RQLQ: p=0.04). Four patients in the D-HM group experienced minor adverse events that were mild and resolved within 15 days. Conclusions D-HM combination therapy may be beneficial in the management of symptoms and rhinitis-associated quality of life and potentially useful in clinical practice. However, randomized placebo-controlled clinical trials are required to confirm their effectiveness. Study registration This study has been registered at Clinical Research Information Service (KCT0007242).
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Affiliation(s)
- Mi Ju Son
- R&D Planning Team, Korea Institute of Oriental Medicine, Daejeon, Republic of Korea
| | - Sungha Kim
- KM Science Research Division, Korea Institute of Oriental Medicine, Daejeon, Republic of Korea
| | - Young-Eun Kim
- KM Data Division, Korea Institute of Oriental Medicine, Daejeon, Republic of Korea
| | - Bo-Young Kim
- KM Science Research Division, Korea Institute of Oriental Medicine, Daejeon, Republic of Korea
| | | | - Jong Cheol Lee
- 365 Cha Korean Medicine Clinic, Yeosu, Republic of Korea
| | - Jae Hoon Cha
- 365 Cha Korean Medicine Clinic, Yeosu, Republic of Korea
| | - Soonsik Kang
- Moa Korean Medicine Clinic, Seoul, Republic of Korea
| | | | - Seokho Son
- I-Bone Korean Medicine Clinic, Asan, Republic of Korea
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Park SS, Lee JC, Byun JM, Choi G, Kim KH, Lim S, Dingli D, Jeon YW, Yahng SA, Shin SH, Min CK, Koo J. ML-based sequential analysis to assist selection between VMP and RD for newly diagnosed multiple myeloma. NPJ Precis Oncol 2023; 7:46. [PMID: 37210456 DOI: 10.1038/s41698-023-00385-w] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 05/03/2023] [Indexed: 05/22/2023] Open
Abstract
Optimal first-line treatment that enables deeper and longer remission is crucially important for newly diagnosed multiple myeloma (NDMM). In this study, we developed the machine learning (ML) models predicting overall survival (OS) or response of the transplant-ineligible NDMM patients when treated by one of the two regimens-bortezomib plus melphalan plus prednisone (VMP) or lenalidomide plus dexamethasone (RD). Demographic and clinical characteristics obtained during diagnosis were used to train the ML models, which enabled treatment-specific risk stratification. Survival was superior when the patients were treated with the regimen to which they were low risk. The largest difference in OS was observed in the VMP-low risk & RD-high risk group, who recorded a hazard ratio of 0.15 (95% CI: 0.04-0.55) when treated with VMP vs. RD regimen. Retrospective analysis showed that the use of the ML models might have helped to improve the survival and/or response of up to 202 (39%) patients among the entire cohort (N = 514). In this manner, we believe that the ML models trained on clinical data available at diagnosis can assist the individualized selection of optimal first-line treatment for transplant-ineligible NDMM patients.
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Affiliation(s)
- Sung-Soo Park
- Catholic Research Network for Multiple Myeloma, Catholic Hematology Hospital, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea
- Department of Hematology, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, 06591, Republic of Korea
| | - Jong Cheol Lee
- Department of Otorhinolaryngology, GangNeung Asan Hospital, University of Ulsan College of Medicine, Gangneung-si, Gangwon-do, 25440, Republic of Korea
| | - Ja Min Byun
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Gyucheol Choi
- ImpriMedKorea, Inc., Seoul, 08507, Republic of Korea
| | - Kwan Hyun Kim
- ImpriMedKorea, Inc., Seoul, 08507, Republic of Korea
| | - Sungwon Lim
- ImpriMedKorea, Inc., Seoul, 08507, Republic of Korea
- ImpriMed, Inc., Palo Alto, CA, 94303, USA
| | - David Dingli
- Division of Hematology, Mayo Clinic, Rochester, MN, 55905, USA
| | - Young-Woo Jeon
- Catholic Research Network for Multiple Myeloma, Catholic Hematology Hospital, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea
- Department of Hematology, Yeoido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, 07345, Republic of Korea
| | - Seung-Ah Yahng
- Catholic Research Network for Multiple Myeloma, Catholic Hematology Hospital, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea
- Department of Hematology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, 22711, Republic of Korea
| | - Seung-Hwan Shin
- Catholic Research Network for Multiple Myeloma, Catholic Hematology Hospital, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea
- Department of Hematology, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, 03312, Republic of Korea
| | - Chang-Ki Min
- Catholic Research Network for Multiple Myeloma, Catholic Hematology Hospital, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea.
- Department of Hematology, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, 06591, Republic of Korea.
| | - Jamin Koo
- ImpriMedKorea, Inc., Seoul, 08507, Republic of Korea.
- ImpriMed, Inc., Palo Alto, CA, 94303, USA.
- Department of Chemical Engineering, Hongik University, Seoul, 04066, Republic of Korea.
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Paik W, Lee JC, Noh BJ, Na DG. US Features of the Parathyroid Glands: An Intraoperative Surgical Specimen Study. J Korean Soc Radiol 2023; 84:596-605. [PMID: 37324996 PMCID: PMC10265225 DOI: 10.3348/jksr.2022.0104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 09/11/2022] [Accepted: 10/08/2022] [Indexed: 06/17/2023]
Abstract
Purpose This study aimed to evaluate the US features of the parathyroid glands (PTGs) using surgical specimens of normal PTGs obtained during thyroid surgery. Materials and Methods This study included 34 normal PTGs from 17 consecutive patients who underwent thyroid surgery between December 2020 and March 2021. All normal PTGs were histologically confirmed by intraoperative frozen-section biopsy for autotransplantation. Surgically resected parathyroid specimens were scanned in sterile normal saline using high-resolution US prior to autotransplantation. The US features of echogenicity (hyperechogenicity or hypoechogenicity), echotexture (homogeneous or heterogeneous), size, and shape (ovoid or round) were retrospectively evaluated. The echogenicity of the three PTGs was compared with that of the thyroid parenchyma of the resected thyroid specimens in two patients. Results All PTGs showed hyperechogenicity similar to that of gauze soaked in normal saline. Homogeneous hyperechogenicity was observed in 32/34 (94.1%) patients, and the echogenicity of the three PTGs was hyperechoic compared with that of the thyroid parenchyma. The long diameter of the PTGs ranged from 5.1 mm to 9.8 mm (mean, 7.1 mm) and the shape of the PTGs was ovoid in 33/34 (97.1%) patients. Conclusion The echogenicity of normal PTG specimens was consistently hyperechoic, and the small ovoid homogeneously hyperechoic structure was a characteristic US feature of the PTGs.
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Prabhakaran S, Bhatt C, Serpell JW, Grodski S, Lee JC. Surgical challenges of giant parathyroid adenomas weighing 10 g or more. J Endocrinol Invest 2022; 46:1169-1176. [PMID: 36564598 DOI: 10.1007/s40618-022-01968-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Accepted: 11/14/2022] [Indexed: 12/25/2022]
Abstract
PURPOSE An average parathyroid adenoma (PA) weighs < 1 g. This study aimed to characterise giant PAs ≥ 10 g (GPAs) to facilitate surgical management of primary hyperparathyroidism (PHPT). METHODS All patients with a GPA confirmed on histology were recruited from the Monash University Endocrine Surgery Unit database. Clinical and demographic data were collected and compared to a group of non-GPA patients. RESULTS A total of 14 GPAs were identified between 2007 and 2018 out of 863 patients (1.6%) with a single PA excised for PHPT. The GPA patients were compared to a control group of 849 non-GPA patients in the same period with similar mean age (62 ± 16 vs 63 ± 14, P = 0.66) and gender distribution (64% vs 75% female, P = 0.35). Pre-operative calcium (Ca) and parathyroid hormone (PTH) levels were significantly higher in GPA patients (P < 0.001). A higher percentage of GPA patients (79%) had concordant localisation studies (ultrasound and sestamibi) than control patients (59%), (P = 0.13), but they were significantly less likely to undergo MIP (55% vs 82%, P = 0.02). The median GPA weighed 12.5 g (IQR 10.5-24.3). Median serum Ca normalised by day 1 post-operatively, while PTH remained elevated. Both serum Ca and PTH levels were in the normal range at 3 months. All GPA lesions were benign on histopathology. CONCLUSION GPAs are rare and display severe clinical and biochemical abnormalities. Despite their large size, concordant pre-operative imaging was not always achieved, and a few patients were suitable for MIP.
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Affiliation(s)
- S Prabhakaran
- Monash University Endocrine Surgery Unit, Alfred Hospital, Melbourne, VIC, Australia.
| | - C Bhatt
- Monash University Endocrine Surgery Unit, Alfred Hospital, Melbourne, VIC, Australia
- School of Clinical Sciences of Monash Health, Monash University, Victoria, Australia
| | - J W Serpell
- Monash University Endocrine Surgery Unit, Alfred Hospital, Melbourne, VIC, Australia
- Central Clinical School, Department of Surgery, Monash University, Victoria, Australia
| | - S Grodski
- Monash University Endocrine Surgery Unit, Alfred Hospital, Melbourne, VIC, Australia
- Central Clinical School, Department of Surgery, Monash University, Victoria, Australia
| | - J C Lee
- Monash University Endocrine Surgery Unit, Alfred Hospital, Melbourne, VIC, Australia
- Central Clinical School, Department of Surgery, Monash University, Victoria, Australia
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Kang MW, Yibeltal M, Kim YH, Oh SJ, Lee JC, Kwon EE, Lee SS. Enhancement of soil physical properties and soil water retention with biochar-based soil amendments. Sci Total Environ 2022; 836:155746. [PMID: 35525368 DOI: 10.1016/j.scitotenv.2022.155746] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 04/20/2022] [Accepted: 05/02/2022] [Indexed: 06/14/2023]
Abstract
The soil physical properties are deteriorating due to changing rainfall patterns and intensities, as well as climate change-induced temperature fluctuations. Pot experiments were carried out to examine the impacts of synthesized soil amendments on soil water retention and plant growth. Soil amendments (biochar, polyacrylamide (PAM), and moringa) were used at different rates (0 (control), 2.1, 4.2, and 8.3 g kg-1) to improve the physical properties of the soil. As a result of soil amendment application, it was found that the mean weight diameter of soil aggregate increased by 188% during the 8.3 g kg-1 treatment, forming stable soil particles. Soil water retention improved by up to 128.9% during the 8.3 g kg-1 treatment, and it was analyzed that it was due to the high surface area of biochar, porosity, and high molecular weight of PAM. Pellet treatment increased all plant growth parameters (height, stem diameter, leaf number, and fresh and dry weight) for both beans and maize. The dry weight of beans (C3 plant) and maize (C4 plant) increased by 92.9 and 146.4%, respectively in an 8.3 g kg-1 pot. The soil physical condition was stabilized by the high carbon content of biochar and the improvement of soil coagulation between PAM and moringa. This had a positive effect on the C4 plant. The findings of this study indicate that if the soil amendments are properly mixed and applied based, they will improve soil stability and plant productivity.
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Affiliation(s)
- Min Woo Kang
- Department of Environmental & Energy Engineering, Yonsei University, Wonju 26493, Republic of Korea
| | - Mesenbet Yibeltal
- Department of Environmental & Energy Engineering, Yonsei University, Wonju 26493, Republic of Korea; Faculty of Civil and Water Resource Engineering, Bahir Dar Institute of Technology, Bahir Dar University, P.O. Box 26, Bahir Dar, Ethiopia
| | - Young Hyun Kim
- Department of Environmental & Energy Engineering, Yonsei University, Wonju 26493, Republic of Korea
| | - Se Jin Oh
- Department of Environmental & Energy Engineering, Yonsei University, Wonju 26493, Republic of Korea
| | - Jong Cheol Lee
- Department of Environmental & Energy Engineering, Yonsei University, Wonju 26493, Republic of Korea
| | - Eilhann E Kwon
- Department of Earth Resources and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea.
| | - Sang Soo Lee
- Department of Environmental & Energy Engineering, Yonsei University, Wonju 26493, Republic of Korea.
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11
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Lee JC, Kim GC, Lee NK, Kim SW, Cho YS, Chung SW, Lee YS, Chang HW, Byun Y, Kim SY. Feedback amplification of senolysis using caspase-3-cleavable peptide-doxorubicin conjugate and 2DG. J Control Release 2022; 346:158-168. [PMID: 35452763 DOI: 10.1016/j.jconrel.2022.04.012] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 04/06/2022] [Accepted: 04/08/2022] [Indexed: 11/29/2022]
Abstract
Therapy-induced senescence (TIS), a common outcome of current cancer therapy, is a known cause of late recurrence and metastasis and thus its eradication is crucial for therapy success. In this study, we introduced a conceptually novel strategy combining radiation-induced apoptosis-targeted chemotherapy (RIATC) with an effective glycolysis inhibitor, 2-deoxy-d-glucose (2DG) to target TIS. RIATC releases cytotoxic payload by amplification, continually increasing TIS, and this can be targeted by 2DG that stimulates an intrinsic apoptotic pathway in senescent cells, the senolysis; the senolytic 2DG also sensitizes cancer cells to chemo/radiation treatment. Anti-tumor efficacy of RIATC was investigated in numerous tumor models, and various cancer types were screened for TIS. Furthermore, in vitro evaluations of molecular markers of senescence, such as senescence-associated β-galactosidase (SA-β-Gal) assay, were performed to confirm that TIS was induced by RIATC therapy in MCF-7 cells. The combination therapy with 2DG proved to be effective in MCF-7 tumor-bearing mice that demonstrated feedback amplification of senolysis and successful inhibition of tumor growth. Our findings suggest that RIATC, when given together with 2DG, can overcome therapy-induced senescence and this combination is a promising strategy that enhances the therapeutic benefit of anti-cancer cytotoxic therapy.
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Affiliation(s)
- Jong Cheol Lee
- Department of Otorhinolaryngology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung-si, Gangwon-do 25440, Republic of Korea
| | - Gui Chul Kim
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea
| | - Na Kyeong Lee
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, South Korea
| | - Seong Who Kim
- Department of Biochemistry and Molecular Biology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea
| | - Young Seok Cho
- Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul 08826, Republic of Korea
| | - Seung Woo Chung
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, South Korea; Center for Nanomedicine, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21231, United States; Department of Ophthalmology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, United States
| | - Yoon Se Lee
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea
| | - Hyo Won Chang
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea
| | - Youngro Byun
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, South Korea; Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul 08826, Republic of Korea.
| | - Sang Yoon Kim
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea.
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12
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Lee JC, Byeon SK, Moon MH. Correction to Relative Quantification of Phospholipids Based on Isotope-Labeled Methylation by Nanoflow Ultrahigh Performance Liquid Chromatography-Tandem Mass Spectrometry: Enhancement in Cardiolipin Profiling. Anal Chem 2021; 93:7378-7379. [PMID: 33961386 DOI: 10.1021/acs.analchem.1c01819] [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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13
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Lee GB, Kim YB, Lee JC, Moon MH. Optimisation of high-speed lipidome analysis by nanoflow ultrahigh-performance liquid chromatography-tandem mass spectrometry: Application to identify candidate biomarkers for four different cancers. J Chromatogr B Analyt Technol Biomed Life Sci 2021; 1175:122739. [PMID: 33991954 DOI: 10.1016/j.jchromb.2021.122739] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 04/07/2021] [Accepted: 04/24/2021] [Indexed: 12/14/2022]
Abstract
Lipid analysis is a powerful tool that can elucidate the pathogenic roles of lipids in metabolic diseases, and facilitate the development of potential biomarkers. Lipid analysis by large-scale lipidomics requires a high-speed and high-throughput analytical platform. In the present study, a high-speed analytical method for lipid analysis using nanoflow ultrahigh-performance liquid chromatography-electrospray ionisation-tandem mass spectrometry (nUHPLC-ESI-MS/MS) was optimised by investigating the effects of column flow rate, pump flow rate, dwell time, initial binary mobile phase composition, and gradient duration on the separation efficiency of standard lipid mixtures. The minimum gradient time for high-speed lipid separation was determined by examining the time-based separation efficiency and spectral overlap of isobaric lipid species during selected reaction monitoring-based quantification of sphingomyelin and a second isotope of phosphatidylcholine, which differ in molecular weight by only 1 Da. Finally, the optimised nUHPLC-ESI-MS/MS method was applied to analyse 200 plasma samples from patients with liver, gastric, lung, and colorectal cancer to evaluate its performance by measuring previously identified candidate lipid biomarkers. About 73% of the reported marker candidates (6 out of 7 in liver, 5/9 in gastric, 4/6 in lung, and 6/7 in colorectal cancer) could be assigned using the optimised method, supporting its use for high-throughput lipid analysis.
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Affiliation(s)
- Gwang Bin Lee
- Department of Chemistry, Yonsei University, 50 Yonsei-ro, Seoul 03722, South Korea
| | - Young Beom Kim
- Department of Chemistry, Yonsei University, 50 Yonsei-ro, Seoul 03722, South Korea
| | - Jong Cheol Lee
- Department of Chemistry, Yonsei University, 50 Yonsei-ro, Seoul 03722, South Korea
| | - Myeong Hee Moon
- Department of Chemistry, Yonsei University, 50 Yonsei-ro, Seoul 03722, South Korea.
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14
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Kim JY, Lee GB, Lee JC, Moon MH. High-Speed Screening of Lipoprotein Components Using Online Miniaturized Asymmetrical Flow Field-Flow Fractionation and Electrospray Ionization Tandem Mass Spectrometry: Application to Hepatocellular Carcinoma Plasma Samples. Anal Chem 2021; 93:4867-4875. [PMID: 33689313 DOI: 10.1021/acs.analchem.0c04756] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
This study introduces a high-speed screening method for the quantitative analysis of lipoprotein components in human plasma samples using online miniaturized asymmetrical flow field-flow fractionation and electrospray ionization-tandem mass spectrometry (mAF4-ESI-MS/MS). Using an mAF4 channel, high-density lipoproteins and low-density lipoproteins can be fractionated by size at a high speed (<10 min) and directly fed to ESI-MS/MS for the simultaneous screening of targeted lipid species and apolipoprotein A1 (ApoA1). By employing the heated electrospray ionization probe as an ionization source, an mAF4 effluent flow rate of up to a few tens of microliters per minute can be used, which is adequate for direct feeding to MS without splitting the outflow, resulting in a consistent feed rate to MS for stable MS detection. mAF4-ESI-MS/MS was applied to hepatocellular carcinoma (HCC) plasma samples for targeted quantification of 25 lipid biomarker candidates and ApoA1 compared with healthy controls, the results of which were in statistical agreement with the quantified results obtained by nanoflow ultrahigh performance liquid chromatography-tandem mass spectrometry. Moreover, the present method provided the simultaneous detection of changes in lipoprotein size and the relative amount. This study demonstrated the potential of mAF4-ESI-MS/MS as an alternative high-speed screening platform for the top-down analysis of targeted lipoprotein components in patients with HCC, which is applicable to other diseases that involve the perturbation of lipoproteins.
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Affiliation(s)
- Jin Yong Kim
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea
| | - Gwang Bin Lee
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea
| | - Jong Cheol Lee
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea
| | - Myeong Hee Moon
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea
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15
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Jo HS, Kim HA, Lee JC, Yoon KC, Yoon YI, Choi YY, Seok JI, Moon MH, Kim DS. Lipidomic signatures of post-hepatectomy liver failure using porcine hepatectomy models. Ann Transl Med 2020; 8:1363. [PMID: 33313108 PMCID: PMC7723583 DOI: 10.21037/atm-20-3596] [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] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background Clinical diagnosis of post-hepatectomy liver failure (PHLF) can only be made on or after the 5th postoperative day. Biomarker for early diagnosis is considered as a critical unmet need. Methods Twenty domestic female crossbreed (Yorkshire-landrace and duroc) pigs underwent sham operation (n=6), 70% (n=7) and 90% (n=7) partial hepatectomy (PH). A comprehensive lipidomic analysis was conducted using sera collected at pre-operation (PO), 14, 30, and 48 h after PH using nanoflow ultrahigh performance liquid chromatography-electrospray ionization-tandem mass spectrometry. Results Of the 184 quantified lipids, 14 lipids showed significant differences between the two resection groups starting at 30 h after surgery. Four phosphatidylcholine (PC) plasmalogen species (P-16:0/16:0, P-18:0/18:2, P-18:0/20:4, and P-18:0/22:6) and PC 32:2 significantly increased in the 90% PH group while these returned to PO level after 30 h in the 70% PH group, presumably implying the failure markers. In contrast, eight triacylglycerol (TG) species (40:0, 42:1, 42:0, 44:1, 44:2, 46:1, 46:2, and 48:3) and sphingomyelin d18:1/20:0 showed an opposite trend, wherein they significantly decreased in the 90% PH group while these in the 70% PH group were abruptly increased until 30 h but returned to near PO levels at 48 h, implying the recovery markers. Same trends could also be observed in the level of whole lipid classes of PC plasmalogens and TGs, in addition to selected individual lipid species. Conclusions Characteristic lipidomic signatures of PHLF could be identified using large animal models. These candidates have a potential to serve as a tool for early diagnosis and may open new paths to the study to overcome PHLF.
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Affiliation(s)
- Hye-Sung Jo
- Department of Surgery, Korea University College of Medicine, Seoul, Korea
| | - Hae A Kim
- Department of Chemistry, Yonsei University, Seoul, Korea
| | - Jong Cheol Lee
- Department of Chemistry, Yonsei University, Seoul, Korea
| | - Kyung Chul Yoon
- Department of Surgery, Korea University College of Medicine, Seoul, Korea
| | - Young-In Yoon
- Department of Surgery, University of Ulsan College of Medicine, Seoul, Korea
| | - Yoon Young Choi
- Department of Biomedical Science, Korea University College of Medicine Graduate School, Seoul, Korea
| | - Jin-I Seok
- Department of Biomedical Science, Korea University College of Medicine Graduate School, Seoul, Korea
| | | | - Dong-Sik Kim
- Department of Surgery, Korea University College of Medicine, Seoul, Korea
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16
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Chang HW, Lee M, Lee YS, Kim SH, Lee JC, Park JJ, Nam HY, Kim MR, Han MW, Kim SW, Kim SY. p53-dependent glutamine usage determines susceptibility to oxidative stress in radioresistant head and neck cancer cells. Cell Signal 2020; 77:109820. [PMID: 33137455 DOI: 10.1016/j.cellsig.2020.109820] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 10/26/2020] [Accepted: 10/28/2020] [Indexed: 01/08/2023]
Abstract
The manner in which p53 maintains redox homeostasis and the means by which two key metabolic elements, glucose and glutamine, contribute to p53-dependent redox stability remain unclear. To elucidate the manner in which p53 deals with glucose-deprived, reactive oxygen species (ROS)-prone conditions in this regard, two isogenic cancer subclones (HN3R-A and HN3R-B) bearing distinct p53 mutations as an in vitro model of intratumoral p53 heterogeneity were identified. Following cumulative irradiation, the subclones showed a similar metabolic shift to aerobic glycolysis and increasing NADPH biogenesis for cellular defense against oxidative damage irrespective of p53 status. The radioresistant cancer cells became more sensitive to glycolysis-targeting drugs. However, in glucose-deprived and ROS-prone conditions, HN3R-B, the subclone with the original p53 increased the utilization of glutamine by GLS2, thereby maintaining redox homeostasis and ATP. Conversely, HN3R-A, the p53-deficient radioresistant subclone displayed an impairment in glutamine usage and high susceptibility to metabolic stresses as well as ROS-inducing agents despite the increased ROS scavenging system. Collectively, our findings suggest that p53 governs the alternative utilization of metabolic ingredients, such as glucose and glutamine, in ROS-prone conditions. Thus, p53 status may be an important biomarker for selecting cancer treatment strategies, including metabolic drugs and ROS-inducing agents, for recurrent cancers after radiotherapy.
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Affiliation(s)
- Hyo Won Chang
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - MyungJin Lee
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Yoon Sun Lee
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Song Hee Kim
- Department of Otolaryngology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Jong Cheol Lee
- Department of Otolaryngology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, South Korea
| | - Jung Je Park
- Department of Otolaryngology, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju, Republic of Korea
| | - Hae Yun Nam
- Department of Biochemistry and Molecular Biology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Mi Ra Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Inje University College of Medicine, Haeundae Paik Hospital, Busan, Republic of Korea
| | - Myung Woul Han
- Department of Otolaryngology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Seong Who Kim
- Department of Biochemistry and Molecular Biology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
| | - Sang Yoon Kim
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
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17
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Kim KU, Yoon KJ, Park S, Lee JC, Moon HY, Moon MH. Exercise-induced recovery of plasma lipids perturbed by ageing with nanoflow UHPLC-ESI-MS/MS. Anal Bioanal Chem 2020; 412:8003-8014. [PMID: 32918173 DOI: 10.1007/s00216-020-02933-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 08/26/2020] [Accepted: 08/31/2020] [Indexed: 01/03/2023]
Abstract
Daily physical exercise is an essential part of life and is required for remaining healthy; it enhances therapeutic efficacy in the elderly and prevents age-related diseases associated with lipid profile alterations, such as cardiovascular disease, diabetes mellitus, and dementia. To more efficiently analyse the lipid profiles and unveil the effect of exercise in aged mice, we optimized our study by examining the effects of using ionization modifiers in the mobile phase and in-source fragmentation of lysophospholipids on the simultaneous analysis of fatty acids (FAs) including hydroxyl fatty acids, glycerophospholipids, sphingolipids, and glycerolipids using nanoflow ultrahigh performance liquid chromatography-electrospray ionization-tandem mass spectrometry. We applied the optimization to investigate the lipidomic plasma alterations in young (7 weeks old) and aged (84 weeks old) mice (C57BL/6) subjected to treadmill exercise. Of the 390 identified lipid species, 159 were quantified to investigate ageing-related lipid species responsive to physical exercise. In particular, circulating lysophosphatidylcholine and lysophosphatidylethanolamine levels showed a significant decrease, and lysophosphatidic acid showed a simultaneous increase with ageing. The saturated FA (16:0 and 18:0) increased with ageing while the unsaturated FA 22:6 decreased. Dihydroxy fatty acid (18:1_2OH) showed an exercise-induced recovery against ageing. It is notable that the levels of five triacylglycerol species significantly increased by as much as threefold with ageing, but their levels largely recovered to those observed in the young mice after exercise. These findings can help understand the influence of ageing on lipid perturbation and the role of physical exercise on lipidomic recovery in response to ageing-associated loss of physical status. Graphical abstract.
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Affiliation(s)
- Kang Uk Kim
- Department of Chemistry, Yonsei University, Seodaemun-gu, Seoul, 03722, South Korea
| | - Kyeong Jin Yoon
- Department of Physical Education, Seoul National University, Gwanak-gu, Seoul, 08826, South Korea
| | - Suhong Park
- Department of Physical Education, Seoul National University, Gwanak-gu, Seoul, 08826, South Korea
| | - Jong Cheol Lee
- Department of Chemistry, Yonsei University, Seodaemun-gu, Seoul, 03722, South Korea
| | - Hyo Youl Moon
- Department of Physical Education, Seoul National University, Gwanak-gu, Seoul, 08826, South Korea.
- Institute of Sport Science, Seoul National University, Gwanak-gu, Seoul, 08826, South Korea.
- Institute on Ageing, Seoul National University, Seoul, 08826, South Korea.
| | - Myeong Hee Moon
- Department of Chemistry, Yonsei University, Seodaemun-gu, Seoul, 03722, South Korea.
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18
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Lee WH, Han MW, Kim SH, Seong D, An JH, Chang HW, Kim SY, Kim SW, Lee JC. Tristetraprolin Posttranscriptionally Downregulates TRAIL Death Receptors. Cells 2020; 9:cells9081851. [PMID: 32784606 PMCID: PMC7465502 DOI: 10.3390/cells9081851] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 07/31/2020] [Accepted: 08/04/2020] [Indexed: 12/30/2022] Open
Abstract
Tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL) has attracted attention as a potential candidate for cancer therapy. However, many primary cancers are resistant to TRAIL, even when combined with standard chemotherapy. The mechanism of TRAIL resistance in cancer cells has not been fully elucidated. The TRAIL death receptor (DR) 3′-untranslated region (3′-UTR) is reported to contain AU-rich elements (AREs) that are important for regulating DR mRNA stability. However, the mechanisms by which DR mRNA stability is determined by its 3′-UTR are unknown. We demonstrate that tristetraprolin (TTP), an ARE-binding protein, has a critical function of regulating DR mRNA stability. DR4 mRNA contains three AREs and DR5 mRNA contains four AREs in 3′-UTR. TTP bound to all three AREs in DR4 and ARE3 in DR5 and enhanced decay of DR4/5 mRNA. TTP overexpression in colon cancer cells changed the TRAIL-sensitive cancer cells to TRAIL-resistant cells, and down-regulation of TTP increased TRAIL sensitivity via DR4/5 expression. Therefore, this study provides a molecular mechanism for enhanced levels of TRAIL DRs in cancer cells and a biological basis for posttranscriptional modification of TRAIL DRs. In addition, TTP status might be a biomarker for predicting TRAIL response when a TRAIL-based treatment is used for cancer.
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Affiliation(s)
- Won Hyeok Lee
- Department of Otorhinolaryngology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan 44033, Korea; (W.H.L.); (M.W.H.); (S.H.K.); (D.S.); (J.H.A.)
- Biomedical Research Center, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan 44033, Korea
| | - Myung Woul Han
- Department of Otorhinolaryngology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan 44033, Korea; (W.H.L.); (M.W.H.); (S.H.K.); (D.S.); (J.H.A.)
- Biomedical Research Center, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan 44033, Korea
| | - Song Hee Kim
- Department of Otorhinolaryngology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan 44033, Korea; (W.H.L.); (M.W.H.); (S.H.K.); (D.S.); (J.H.A.)
- Biomedical Research Center, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan 44033, Korea
| | - Daseul Seong
- Department of Otorhinolaryngology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan 44033, Korea; (W.H.L.); (M.W.H.); (S.H.K.); (D.S.); (J.H.A.)
- Biomedical Research Center, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan 44033, Korea
| | - Jae Hee An
- Department of Otorhinolaryngology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan 44033, Korea; (W.H.L.); (M.W.H.); (S.H.K.); (D.S.); (J.H.A.)
- Biomedical Research Center, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan 44033, Korea
| | - Hyo Won Chang
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea; (H.W.C.); (S.Y.K.)
| | - Sang Yoon Kim
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea; (H.W.C.); (S.Y.K.)
| | - Seong Who Kim
- Department of Biochemistry and Molecular Biology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea
- Correspondence: (S.W.K.); (J.C.L.); Tel.: +82-2-3010-4270 (S.W.K.); +82-33-610-4372 (J.C.L.); Fax: +82-2-3010-4249 (S.W.K.); +82-33-642-3189 (J.C.L.)
| | - Jong Cheol Lee
- Department of Otorhinolaryngology, GangNeung Asan Hospital, University of Ulsan College of Medicine, Gangneung 25440, Korea
- Correspondence: (S.W.K.); (J.C.L.); Tel.: +82-2-3010-4270 (S.W.K.); +82-33-610-4372 (J.C.L.); Fax: +82-2-3010-4249 (S.W.K.); +82-33-642-3189 (J.C.L.)
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19
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Eum JY, Lee JC, Yi SS, Kim IY, Seong JK, Moon MH. Aging-related lipidomic changes in mouse serum, kidney, and heart by nanoflow ultrahigh-performance liquid chromatography-tandem mass spectrometry. J Chromatogr A 2020; 1618:460849. [PMID: 31928769 DOI: 10.1016/j.chroma.2020.460849] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Revised: 12/06/2019] [Accepted: 01/02/2020] [Indexed: 01/05/2023]
Abstract
Aging refers to the intracellular accumulation of reactive oxygen species that damages proteins, DNA, and lipids. As alterations in lipid metabolism may trigger metabolic disorders and the onset of metabolic diseases, changes in lipid profiles can be closely related to aging. In this study, a comprehensive lipidomic comparison between 4- and 25-month-old mice was performed to investigate age-induced changes in the lipid profiles of mouse serum, kidney, and heart using nanoflow ultrahigh-performance liquid chromatography-electrospray ionization-tandem mass spectrometry. Quantitative analysis of 279 of the 542 identified lipids revealed significant changes upon aging, mainly showing decreased levels in the three types of samples. Exceptionally, most triacylglycerols showed significant increases in heart tissue. The kidney was influenced more by aging than the serum and heart. The highly abundant lipids in each lipid class with significant decreases (> 2-fold, p < 0.01) were lysophosphatidic acid 18:1, lysophosphatidylinositol 20:4, and ceramide d:18:1/24:0 in serum; lysophosphatidylglycerol 16:0 in heart tissue; and eight phosphatidylethanolamines (20:4, 22:6, 36:2, 36:3, 38:4, 38:5, 38:6, 40:6, and 40:7), two cardiolipins (72:7 and 72:8), and lysophosphatidylcholine 18:0 in kidney tissue. The findings indicate the potential of lipidomic analysis to study characteristic age-related lipid changes.
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Affiliation(s)
- Jung Yong Eum
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea
| | - Jong Cheol Lee
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea
| | - Sun Shin Yi
- Department of Biomedical Laboratory Science, College of Biomedical Sciences, Soonchunhyang University, Asan, Republic of Korea; Korea Mouse Phenotyping Center, Seoul National University, Seoul, Republic of Korea
| | - Il Yong Kim
- Korea Mouse Phenotyping Center, Seoul National University, Seoul, Republic of Korea; Laboratory of Developmental Biology and Genetics, College of Veterinary Medicine, BK21 Program for Veterinary Science, BIO-MAX institute, Seoul National University, Seoul, Republic of Korea
| | - Je Kyung Seong
- Korea Mouse Phenotyping Center, Seoul National University, Seoul, Republic of Korea; Laboratory of Developmental Biology and Genetics, College of Veterinary Medicine, BK21 Program for Veterinary Science, BIO-MAX institute, Seoul National University, Seoul, Republic of Korea.
| | - Myeong Hee Moon
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea.
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20
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Branch KR, Gatewood MO, Kudenchuk P, Lee JC, Strote J, Petek BJ, De Boer I, Carlbom D, Shuman WP, Counts CR, Sayre MR, Gunn M. P6155Early computed tomographic evaluation for out-of-hospital cardiac arrest survivors: the CT-FIRST trial. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0761] [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
Background
Patients surviving an out-of-hospital cardiac arrest (OHCA) commonly present without an obvious etiology, but computed tomography (CT) can provide rapid, comprehensive anatomic evaluation of potential OHCA causes.
Purpose
To assess the diagnostic capabilities of whole body CT imaging in OHCA survivors.
Methods
From 11/2015 to 2/2018, the CT-FIRST (CT Feasibility In Resuscitated patient for Sudden death Triage) protocol enrolled 104 OHCA survivors without obvious OHCA cause to an early (<6 hours from hospital arrival) dual source Sudden Death CT (SDCT) scan protocol that included a non-contrast head, ECG-gated cardiac/thoracic angiography, and non-gated venous phase abdominal CT's. Cardiac CT analysis was blinded, but other SDCT findings were clinically available. Patients needing urgent cardiac catheterization or hemodynamically unable to tolerate CT were excluded. Primary endpoints were SDCT diagnosis compared to OHCA causes from adjudicated record review, and any significantly altered therapy based on SDCT. Acute coronary syndrome by SDCT was conservatively assumed if >50% stenosis was identified in major coronary artery(ies).
Results
SDCT scans identified 39% (41/104) of all OHCA causes and 95% (41/43) of causes potentially identifiable with SDCT (Table). No inappropriate treatments resulted from SDCT findings. SDCT changed or expedited treatments in 21/23 (95%) patients, including antibiotics, anticoagulants, and invasive evaluations or treatments. SDCT found or confirmed resuscitation complications including liver/spleen laceration (n=5), pneumothorax (n=7), and hemopericardium (n=1).
N=104 OHCA Cause SDCT Diagnosis of OHCA Cause N (%) N (%) Acute coronary syndrome 13 (13%) 13 (100%) Cardiomyopathy 8 (8%) 7 (88%) Pneumonia 11 (11%) 11 (100%) Hemorrhagic stroke 3 (3%) 3 (100%) Pulmonary embolism 4 (3%) 4 (100%) Perforated viscus 2 (2%) 2 (100%) Gut necrosis 1 (1%) 1 (100%) Pulmonary hemorrhage 1 (1%) 1 (100%) Substance use 22 (21%) 0 (0%) Unknown 7 (7%) 0 (0%) Other 32 (31%) 0 (0%)
Conclusion
This pilot study suggests the SDCT protocol has considerable promise to diagnose OHCA causes and complications of resuscitation, as well as change clinical treatment.
Acknowledgement/Funding
Medic One Foundation
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Affiliation(s)
- K R Branch
- University of Washington, Cardiology, Seattle, United States of America
| | - M O Gatewood
- University of Washington, Emergency Medicine, Seattle, United States of America
| | - P Kudenchuk
- University of Washington, Cardiology, Seattle, United States of America
| | - J C Lee
- Henry Ford Hospital, Cardiology, Detroit, United States of America
| | - J Strote
- University of Washington, Emergency Medicine, Seattle, United States of America
| | - B J Petek
- Massachusetts General Hospital, Internal Medicine, Boston, United States of America
| | - I De Boer
- University of Washington, Cardiology, Seattle, United States of America
| | - D Carlbom
- University of Washington, Cardiology, Seattle, United States of America
| | - W P Shuman
- University of Washington, Radiology, Seattle, United States of America
| | - C R Counts
- Harborview Medical Center, Medic One, Seattle, United States of America
| | - M R Sayre
- Harborview Medical Center, Medic One, Seattle, United States of America
| | - M Gunn
- Harborview Medical Center, Radiology, Seattle, United States of America
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21
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Lee GB, Lee JC, Moon MH. Plasma lipid profile comparison of five different cancers by nanoflow ultrahigh performance liquid chromatography-tandem mass spectrometry. Anal Chim Acta 2019; 1063:117-126. [DOI: 10.1016/j.aca.2019.02.021] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 01/22/2019] [Accepted: 02/04/2019] [Indexed: 12/12/2022]
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22
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Lee JC, Yang JS, Moon MH. Simultaneous Relative Quantification of Various Polyglycerophospholipids with Isotope-Labeled Methylation by Nanoflow Ultrahigh Performance Liquid Chromatography-Tandem Mass Spectrometry. Anal Chem 2019; 91:6716-6723. [PMID: 31008580 DOI: 10.1021/acs.analchem.9b00800] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Herein, we introduce a comprehensive analytical method for the separation and relative quantification of polyglycerophospholipids (PGPLs), including phosphatidylglycerol (PG), bis(monoacylglycero)phosphate (BMP), bis(diacylglycero)phosphate (BDP), Hemi BDP, cardiolipin (CL), monolysocardiolipin (MLCL), and dilysocardiolipin (DLCL), using isotope-labeled methylation (ILM) with nanoflow ultrahigh performance liquid chromatography-electrospray ionization-tandem mass spectrometry (nUHPLC-ESI-MS/MS). Abnormal levels of BMP and CL have been associated with the pathology of lysosomal storage and neurodegenerative diseases. Thus, simultaneous analysis of all PGPLs is important to understand the mechanisms and pathologies of such diseases. In this study, improved separation and MS detection of PGPLs, including their regioisomers, was achieved by the methylation of PGPL. ILM-based relative quantification was applied to lipid extracts from a dopaminergic cell line (SH-SY5Y) treated with drugs commonly used for Parkinson's disease (PD), resulting in the identification of 229 unique PGPLs, including 121 CLs, 71 MLCLs, and 16 Hemi BDP species. The drug treatment induced significant increases in the amount of CLs containing polyunsaturated fatty acyl chains, including 20:4 and 22:6, as well as decreased levels of BMP, Hemi BDP, and BDP species, demonstrating the feasibility of using ILM for the comprehensive and high-speed relative quantification of PGPLs.
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Affiliation(s)
- Jong Cheol Lee
- Department of Chemistry , Yonsei University , 50 Yonsei-ro , Seodaemun-gu, Seoul 03722 , Korea
| | - Joon Seon Yang
- Department of Chemistry , Yonsei University , 50 Yonsei-ro , Seodaemun-gu, Seoul 03722 , Korea
| | - Myeong Hee Moon
- Department of Chemistry , Yonsei University , 50 Yonsei-ro , Seodaemun-gu, Seoul 03722 , Korea
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23
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Byeon SK, Park SH, Lee JC, Hwang S, Ku CR, Shin DY, Yoon JS, Lee EJ, Moon MH. Lipidomic differentiation of Graves' ophthalmopathy in plasma and urine from Graves' disease patients. Anal Bioanal Chem 2018; 410:7121-7133. [PMID: 30135996 DOI: 10.1007/s00216-018-1313-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 07/31/2018] [Accepted: 08/07/2018] [Indexed: 10/28/2022]
Abstract
Approximately 50% of patients with Graves' disease (GD) develop retracted eyelids with bulging eyes, known as Graves' ophthalmopathy (GO). However, no simple diagnostic blood marker for distinguishing GO from GD has been developed yet. The objective of this study was to conduct comprehensive profiling of lipids using plasma and urine samples from patients with GD and GO undergoing antithyroid therapy using nanoflow ultrahigh performance liquid chromatography electrospray ionization tandem mass spectrometry. Plasma (n = 86) and urine (n = 75) samples were collected from 23 patients with GD without GO, 31 patients with GO, and 32 healthy controls. Among 389 plasma and 273 urinary lipids that were structurally identified, 281 plasma and 191 urinary lipids were quantified in selected reaction monitoring mode. High-abundance lipids were significantly altered, indicating that the development of GD is evidently related to altered lipid metabolism in both plasma and urine. Several urinary lysophosphatidylcholine species were found to be increased (3- to 10-fold) in both GD and GO. While the overall lipid profiles between GD and GO were similar, significant changes (area under receiver operating curve > 0.8) in GO vs. GD were observed in a few lipid profiles: 58:7-TG and (16:1,18:0)-DG from plasma, 16:1-PC and 50:1-TG from urine, and d18:1-S1P from both plasma and urine samples. An altered metabolism of lipids associated with the additional development of ophthalmopathy was confirmed with the discovery of several candidate markers. These can be suggested as candidate markers for differentiating the state of GO and GD patients based on plasma or urinary lipidomic analysis. Graphical abstract.
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Affiliation(s)
- Seul Kee Byeon
- Department of Chemistry, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Se Hee Park
- Division of Endocrinology and Metabolism, Department of Internal Medicine, National Health Insurance Service Ilsan Hospital, Goyang, Gyeonggi, 10444, South Korea.,Graduate School, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Jong Cheol Lee
- Department of Chemistry, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Sena Hwang
- Department of Internal Medicine, Chaum Life Center, CHA University School of Medicine, Seoul, 06062, South Korea
| | - Cheol Ryong Ku
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea.,Institute of Endocrine Research, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Dong Yeob Shin
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea.,Institute of Endocrine Research, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Jin Sook Yoon
- Department of Ophthalmology, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Eun Jig Lee
- Graduate School, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea. .,Division of Endocrinology and Metabolism, Department of Internal Medicine, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea. .,Institute of Endocrine Research, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea.
| | - Myeong Hee Moon
- Department of Chemistry, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea.
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24
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Chang HW, Kim JW, Kim MR, Nam HY, Lee M, Lee WH, Kim SH, Seong DS, Han MW, Lee JC, Park JJ, Seo JH, Kim SW, Kim SY. Abstract 2405: P53-dependent mitophagy controls glycolytic shift in radioresistant head and neck cancer cells. Cancer Res 2018. [DOI: 10.1158/1538-7445.am2018-2405] [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] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
P53 is an important biomarker in response to genotoxic stress, but it is also known to plays a key role in the regulation of metabolic homeostasis. The loss of p53 is a well-established contributor to the malignant transformation and glycolytic phenotype acquisition of cells during cancer development. However, the role of p53 in genotoxic therapy-induced metabolic shift in cancers remains unclear. Here, we attempted to elucidate how p53 participates in the glycolytic shift of head and neck cancer cell lines following irradiation. We established a stable radioresistant head and neck cancer cells (HN30-R; p53 wild type and UMSCC1-R; p53 null type) through cumulative irradiation and then analyzed their glucose metabolic profiles and mitochondria respiration. As a result, the metabolic analysis revealed no changes glycolysis of HN30-R cells, but UMSCC1-R cells exhibited increased glycolysis through increased glucose uptake and lactate production and glycolytic intermediates as well as related glycolytic enzymes, compared to UMSCC1 cells. Also, we confirmed that the mitochondrial respiration was reduced by the maximal respiration parameters of oxygen consumption rate (OCR) and that abnormal mitochondria were accumulated by electron microscopy in UMSCC1-R cells. Thus, UMSCC1-R cells exhibited an increased sensitivity to glycolysis-targeting drugs such a hexokinases inhibitor (2-deoxy-D-glucoes; 2-DG) and a lactate dehydrogenase-A inhibitor (AT101), but HN30-R cells did not shown any changes. Moreover, we identified that mitophagy limits glycolytic shift through the p53-dependent clearance of abnormal mitochondria. Taken together, these results suggest that p53 null type cells increased aerobic glycolysis to overcome the accumulation of abnormal mitochondria in radioresistnat cells. Conversely, p53 wild type cells inhibited the glycolytic shift by regulating a integrity through p53-dependent mitophagy. Thus, glycolysis-targeted drugs could be an alternative strategy for overcoming recurrent cancers after radiotherapy, and p53 status could be a biomarker for selecting participants for clinical trials.
Citation Format: Hyo Won Chang, Ji Won Kim, Mi Ra Kim, Hae Yun Nam, Myungjin Lee, Won Hyeok Lee, Song Hee Kim, Da Seul Seong, Myung Woul Han, Jong Cheol Lee, Jung Je Park, Ji-hyun Seo, Seong Who Kim, Sang Yoon Kim. P53-dependent mitophagy controls glycolytic shift in radioresistant head and neck cancer cells [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2018; 2018 Apr 14-18; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2018;78(13 Suppl):Abstract nr 2405.
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Affiliation(s)
- Hyo Won Chang
- 1Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Ji Won Kim
- 2College of Medicine Inha University, Incheon, Republic of Korea
| | - Mi Ra Kim
- 3Inje University College of Medicine, Haeundae paik Hospital, Pusan, Republic of Korea
| | - Hae Yun Nam
- 4University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Myungjin Lee
- 1Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Won Hyeok Lee
- 5Ulsan University Hospital, University of Ulsan college of medicine, Ulsan, Republic of Korea
| | - Song Hee Kim
- 5Ulsan University Hospital, University of Ulsan college of medicine, Ulsan, Republic of Korea
| | - Da Seul Seong
- 5Ulsan University Hospital, University of Ulsan college of medicine, Ulsan, Republic of Korea
| | - Myung Woul Han
- 5Ulsan University Hospital, University of Ulsan college of medicine, Ulsan, Republic of Korea
| | - Jong Cheol Lee
- 5Ulsan University Hospital, University of Ulsan college of medicine, Ulsan, Republic of Korea
| | - Jung Je Park
- 6Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - Ji-hyun Seo
- 6Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - Seong Who Kim
- 4University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Sang Yoon Kim
- 1Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
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25
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Lee JC. Beyond disease susceptibility-Leveraging genome-wide association studies for new insights into complex disease biology. HLA 2018; 90:329-334. [PMID: 29106067 DOI: 10.1111/tan.13170] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 10/31/2017] [Indexed: 12/12/2022]
Abstract
Genetic studies in complex diseases have been highly successful, but have also been largely one-dimensional: predominantly focusing on the genetic contribution to disease susceptibility. While this is undoubtedly important-indeed it is a pre-requisite for understanding the mechanisms underlying disease development-there are many other important aspects of disease biology that have received comparatively little attention. In this review, I will discuss how existing genetic data can be leveraged to provide new insights into other aspects of disease biology, why such insights could change the way we think about complex disease, and how this could provide opportunities for better therapies and/or facilitate personalised medicine. To do this, I will use the example of Crohn's disease-a chronic form of inflammatory bowel disease that has been one of the main success stories in complex disease genetics. Indeed, thanks to genetic studies, we now have a much more detailed understanding of the processes involved in Crohn's disease development, but still know relatively little about what determines the subsequent disease course (prognosis) and why this differs so considerably between individuals. I will discuss how we came to realise that genetic variation plays an important role in determining disease prognosis and how this has changed the way we think about Crohn's disease genetics. This will illustrate how phenotypic data can be used to leverage new insights from genetic data and will provide a broadly applicable framework that could yield new insights into the biology of multiple diseases.
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Affiliation(s)
- J C Lee
- Department of Medicine, Addenbrooke's Hospital, University of Cambridge School of Clinical Medicine, Cambridge, UK
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26
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Lee JC, Moon KH, Kwon T, Yang SK, Park S. Impact of adenotonsillectomy on urinary storage symptoms in children with sleep-disordered breathing. Int J Pediatr Otorhinolaryngol 2018; 109:119-121. [PMID: 29728163 DOI: 10.1016/j.ijporl.2018.03.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 03/12/2018] [Accepted: 03/22/2018] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To prospectively evaluate the effectiveness of adenotonsillectomy on resolving urinary storage symptoms such as frequency, urgency, and urgency urinary incontinence (UUI) in indicated sleep disordered breathing (SDB) patients. METHODS We prospectively analyzed changes in storage symptoms and SDB score before and after surgery in 102 children (74 males, 28 females, mean age 8.4 ± 2.8 years) who underwent adenotonsillectomy between July 2011 and Feb 2012. Before and 3 months after surgery, all children and their parents were requested to answer a self-reported SDB scale-questionnaire (22 questions, 0-22 points) and a urinary storage symptoms questionnaire. RESULTS The prevalence of urgency in the overall patients was 31.2%. After adenotonsillectomy, prevalence of frequency and, urgency in addition to SDB score were significantly decreased (p ≦ 0.001). The prevalence of UUI was also significantly lower (11.6%-7.4%, p < 0.001). Patients with urgency had a significantly higher SDB score than those without (11.4 ± 4.3 vs. 7.8 ± 4.0, p < 0.001). After treatment, there was no difference between these two groups. CONCLUSION Adenotonsillectomy markedly improved both SDB score and decreased the prevalence of voiding symptoms (frequency, urgency, and UUI). There was a strong correlation between preoperative SDB score and severity of urgency in children with SDB.
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Affiliation(s)
- Jong Cheol Lee
- Department of Otorhinolaryngology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Kyung Hyun Moon
- Department of Urology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Taekmin Kwon
- Department of Urology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Seong Kyeong Yang
- Department of Otorhinolaryngology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Sungchan Park
- Department of Urology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea.
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27
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Lee JC, Park SM, Kim IY, Sung H, Seong JK, Moon MH. High-fat diet-induced lipidome perturbations in the cortex, hippocampus, hypothalamus, and olfactory bulb of mice. Biochim Biophys Acta Mol Cell Biol Lipids 2018; 1863:980-990. [PMID: 29787912 DOI: 10.1016/j.bbalip.2018.05.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 04/12/2018] [Accepted: 05/14/2018] [Indexed: 12/14/2022]
Abstract
Given their important role in neuronal function, there has been an increasing focus on altered lipid levels in brain disorders. The effect of a high-fat (HF) diet on the lipid profiles of the cortex, hippocampus, hypothalamus, and olfactory bulb of the mouse brain was investigated using nanoflow ultrahigh pressure liquid chromatography-electrospray ionization-tandem mass spectrometry in the current study. For 8 weeks, two groups of 5-week-old mice were fed either an HF or normal diet (6 mice from each group analyzed as the F and N groups, respectively). The remaining mice in both groups then received a 4-week normal diet. Each group was then subdivided into two groups for another 4-week HF or normal diet. Quantitative analysis of 270 of the 359 lipids identified from brain tissue revealed that an HF diet significantly affected the brain lipidome in all brain regions that were analyzed. The HF diet significantly increased diacylglycerols, which play a role in insulin resistance in all regions that were analyzed. Although the HF diet increased most lipid species, the majority of phosphatidylserine species were decreased, while lysophosphatidylserine species, with the same acyl chain, were substantially increased. This result can be attributed to increased oxidative stress due to the HF diet. Further, weight-cycling (yo-yo effect) was found more critical for the perturbation of brain lipid profiles than weight gain without a preliminary experience of an HF diet. The present study reveals systematic alterations in brain lipid levels upon HF diet analyzed either by lipid class and molecular levels.
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Affiliation(s)
- Jong Cheol Lee
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea
| | - Se Mi Park
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea
| | - Il Yong Kim
- Laboratory of Developmental Biology and Genomics, BK21 Program Plus for Advanced Veterinary Science, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea; Korea Mouse Phenotyping Center (KMPC), Seoul, Republic of Korea
| | - Hyerim Sung
- Laboratory of Developmental Biology and Genomics, BK21 Program Plus for Advanced Veterinary Science, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea; Korea Mouse Phenotyping Center (KMPC), Seoul, Republic of Korea
| | - Je Kyung Seong
- Laboratory of Developmental Biology and Genomics, BK21 Program Plus for Advanced Veterinary Science, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea; Korea Mouse Phenotyping Center (KMPC), Seoul, Republic of Korea; Interdisciplinary Program for Bioinformatics, Program for Cancer Biology and BIO-MAX/N-Bio Institute, Seoul National University, Seoul, Republic of Korea.
| | - Myeong Hee Moon
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea.
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28
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Kim SH, Lee WH, Kim SW, Je HU, Lee JC, Chang HW, Kim YM, Kim K, Kim SY, Han MW. EphA3 maintains radioresistance in head and neck cancers through epithelial mesenchymal transition. Cell Signal 2018; 47:122-130. [PMID: 29653204 DOI: 10.1016/j.cellsig.2018.04.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 03/30/2018] [Accepted: 04/08/2018] [Indexed: 12/12/2022]
Abstract
Radiotherapy is a well-established therapeutic modality used in the treatment of many cancers. However, radioresistance remains a serious obstacle to successful treatment. Radioresistance can cause local recurrence and distant metastases in some patients after radiation treatment. Thus, many studies have attempted to identify effective radiosensitizers. Eph receptor functions contribute to tumor development, modulating cell-cell adhesion, invasion, neo-angiogenesis, tumor growth and metastasis. However, the role of EphA3 in radioresistance remains unclear. In the current study, we established a stable radioresistant head and neck cancer cell line (AMC HN3R cell line) and found that EphA3 was expressed predominantly in the radioresistant head and neck cancer cell line through DNA microarray, real time PCR and Western blotting. Additionally, we found that EphA3 was overexpressed in recurrent laryngeal cancer specimens after radiation therapy. EphA3 mediated the tumor invasiveness and migration in radioresistant head and neck cancer cell lines and epithelial mesenchymal transition- related protein expression. Inhibition of EphA3 enhanced radiosensitivity in the AMC HN 3R cell line in vitro and in vivo study. In conclusion, our results suggest that EphA3 is overexpressed in radioresistant head and neck cancer and plays a crucial role in the development of radioresistance in head and neck cancers by regulating the epithelial mesenchymal transition pathway.
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Affiliation(s)
- Song Hee Kim
- Department of Otolaryngology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Won Hyeok Lee
- Department of Otolaryngology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Seong Who Kim
- Department of Biochemistry and Molecular Biology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Hyoung Uk Je
- Department of Radiation Oncology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Jong Cheol Lee
- Department of Otolaryngology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Hyo Won Chang
- Biomedical Research Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Young Min Kim
- Department of Pathology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Kyungbin Kim
- Department of Pathology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Sang Yoon Kim
- Department of otolaryngology, Asan medical center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
| | - Myung Woul Han
- Department of Otolaryngology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea.
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29
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Choi SW, Nam KW, Chung J, Lee JC, Hwang CM, Won YS, Sun K, Min BG. Development of a New Pulsatile Extracorporeal Life Support Device Incorporating a Dual Pulsatile Blood Pump. Int J Artif Organs 2018; 29:583-90. [PMID: 16841287 DOI: 10.1177/039139880602900607] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A new pulsatile extracorporeal life support device (ECLS) has been developed, designed to sustain pulsatile blood flow during emergency cardiopulmonary resuscitations and cardiopulmonary operations. This device features two identical pulsatile pumps that operate alternately and can therefore provide blood inflow in a more uniform manner than similar systems featuring a single-pump configuration. In order to confirm the presumed benefits of this newly-developed dual pulsatile pump configuration, we have conducted a series of in vitro experiments designed to compare the properties of the new system with a single pump system, specifically with regard to pump delivery rate and active filling efficiency. Our results reveal that the dual pump configuration can, indeed, deliver a higher flow than can the single-pump system, and exhibits an active filling efficiency superior to that of the single-pump configuration. We performed a series of animal experiments to measure the pulsatility of the dual-pump configuration in terms of equivalent energy pressure (EEP). In order to measure EEP, we measured femoral arterial pressure and pump outflow. The results of our animal experiments revealed that the newly-developed pulstile ECLS exhibits sufficient pulsatility in terms of the EEP considerations.
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Affiliation(s)
- S W Choi
- Interdisciplinary Program in Biomedical Engineering, Graduate School, Seoul National University, Jongro-gu, Seoul - Korea
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30
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Kim YJ, Song CE, Suranagi SR, Lee JC, Park CE. Markedly different molecular formation in DPP-based small-molecule solar cells probed by grazing-incidence wide-angle X-ray scattering. Acta Crystallogr B Struct Sci Cryst Eng Mater 2017; 73:916-922. [PMID: 28980997 DOI: 10.1107/s2052520617009933] [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] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Accepted: 07/05/2017] [Indexed: 06/07/2023]
Abstract
This study comprehensively explores the nanostructural properties of two diketopyrrolo[3,4-c]pyrrole-1,4-dione (DPP)-based small molecules with different alkyl side groups and their blends with the fullerene derivative PC71BM, using grazing-incidence wide-angle X-ray scattering synchrotron techniques. Preferentially relative face-on orientation within the larger and more ordered stacking phase of SM1 with its shorter side group (ethylhexyl) was observed in the majority of both pristine and blend thin films, whereas SM2 crystals showed strictly perpendicular orientation. These contrasting crystalline characteristics led to significant differences in the results, from which crystalline structure-performance property correlations are proposed. Thus, the results not only demonstrate important scientific insights into the relationship between molecular structure and crystalline formation but also provide molecular design directions that will facilitate further improvement to the morphology and performance of DPP-based small-molecule solar cells.
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Affiliation(s)
- Yu Jin Kim
- POSTECH Organic Electronics Laboratory, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, Republic of Korea
| | - Chang Eun Song
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), 141 Gajeongro, Yuseong, Daejeon, 34114, Republic of Korea
| | - Sanjaykumar R Suranagi
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), 141 Gajeongro, Yuseong, Daejeon, 34114, Republic of Korea
| | - Jong Cheol Lee
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), 141 Gajeongro, Yuseong, Daejeon, 34114, Republic of Korea
| | - Chan Eon Park
- POSTECH Organic Electronics Laboratory, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, Republic of Korea
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Pauling M, Lee JC, Serpell JW, Wilson S. Severe hyperkalaemia complicating parathyroidectomy in patients with end-stage renal disease. Anaesth Intensive Care 2017; 45:365-368. [PMID: 28486895 DOI: 10.1177/0310057x1704500312] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
We evaluated the incidence of perioperative hyperkalaemia in end-stage renal disease (ESRD) patients undergoing parathyroidectomy and investigated possible contributors to this phenomenon. This was a retrospective cohort study looking at patients who had undergone parathyroidectomy for chronic kidney disease-associated mineral bone disease (CKD-MBD) at The Alfred Hospital, Melbourne, since 2001. Baseline demographics including age, gender, aetiology of renal failure and mode of renal replacement therapy as well as anaesthetic technique and duration of surgery were studied as possible contributors. Perioperative potassium values were compared to preoperative baseline. Following stratification into normokalaemic and hyperkalaemic groups, demographic and operative data were compared. Twenty-two patients met the inclusion criteria with a median (interquartile range, IQR) age of 48.5 (42-59) years. There was a male predominance of 68%. The median (IQR) surgical time was 131 (115-164) minutes. Potassium levels rose perioperatively, with a 27.3% incidence of perioperative hyperkalaemia. Median duration of surgery was longer in the hyperkalaemic patients (167 minutes versus 125 minutes). Following the withdrawal of cinacalcet, parathyroidectomy is increasingly required in ESRD patients with CKD-MBD. Potentially life-threatening hyperkalaemia poses a significant risk in the perioperative period. Serial electrolyte monitoring is crucial to safety in this patient group. A multidisciplinary approach to perioperative management is required to ensure optimal timing of renal replacement therapy and appropriate means of serial blood sampling.
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Affiliation(s)
- M Pauling
- Department of Anaesthesia, The Alfred Hospital, Melbourne, Victoria
| | - J C Lee
- Consultant, Monash University Endocrine Surgery Unit, The Alfred Hospital and Department of Surgery, Monash University, Melbourne, Victoria
| | - J W Serpell
- Consultant, Monash University Endocrine Surgery Unit, The Alfred Hospital and Department of Surgery, Monash University, Melbourne, Victoria
| | - S Wilson
- Consultant, Department of Renal Medicine, The Alfred Hospital and Baker IDI Heart and Diabetes Institute, Melbourne, Victoria
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Lee JC, Byeon SK, Moon MH. Relative Quantification of Phospholipids Based on Isotope-Labeled Methylation by Nanoflow Ultrahigh Performance Liquid Chromatography-Tandem Mass Spectrometry: Enhancement in Cardiolipin Profiling. Anal Chem 2017; 89:4969-4977. [PMID: 28399627 DOI: 10.1021/acs.analchem.7b00297] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
In this study, lipid analysis based on isotope-labeled methlylation (ILM) was performed by nanoflow ultrahigh performance liquid chromatography-eletrospray ionization-tandem mass spectrometry (nUPLC-ESI-MS/MS) for enhanced detection and quantification of targeted phospholipids. ILM depends on methylation of phosphate groups by (trimethylsilyl)diazomethane, and the ILM based quantitation with reversed phase nUPLC-ESI-MS/MS provides advantages in PL profiling such as enhanced detectability of methylated PLs owing to increased hydrophobicity and substantial increase in resolution due to the increase of retention. Efficacy of ILM in nUPLC-ESI-MS/MS analysis was evaluated in the selected reaction monitoring (SRM) method by varying the mixing ratio of H-/D-methylated PL standards, which resulted in the successful quantification of 24 species, including phosphatidic acid (PA), phosphatidylserine (PS), phosphatidylglycerol (PG), ceramide-1-phosphate (Cer1P), phosphoinositides, and cardiolipin (CL), with ∼6.6% variation in the calculated ratio of H-/D-methylated PLs. The method was applied to the lipid extracts from a DU145 cell line after D-allose treatment, resulting in the quantification of 83 PLs of which results were not statistically different from those obtained by conventional quantification methods. Morever, detection and quantification of CLs and PAs were evidenced to be highly effective when used with the ILM method as 43 CLs and 20 PAs from cellular lipid extracts were analyzed while only 18 CLs and 12 PAs were identified when conventional methods were carried out. This proves the ILM combined with LC-MS to be a promising method for analysis of the aforementioned classes of lipids. Overall, the study highlighted the applicability of targeted quantification by the ILM method in lipidomic analysis and demonstrated an improvement in the detection of less abundant anionic PLs.
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Affiliation(s)
- Jong Cheol Lee
- Department of Chemistry, Yonsei University , 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea
| | - Seul Kee Byeon
- Department of Chemistry, Yonsei University , 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea
| | - Myeong Hee Moon
- Department of Chemistry, Yonsei University , 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea
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Yang JS, Lee JC, Byeon SK, Rha KH, Moon MH. Size Dependent Lipidomic Analysis of Urinary Exosomes from Patients with Prostate Cancer by Flow Field-Flow Fractionation and Nanoflow Liquid Chromatography-Tandem Mass Spectrometry. Anal Chem 2017; 89:2488-2496. [PMID: 28192938 DOI: 10.1021/acs.analchem.6b04634] [Citation(s) in RCA: 100] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Exosomes are membrane-bound extracellular vesicles involved in intercellular communication and tumor cell metastasis. In this study, flow field-flow fractionation (FlFFF) was utilized to separate urinary exosomes by size, demonstrating a significant difference in exosome sizes between healthy controls and patients with prostate cancer (PCa). Exosome fractions of different sizes were collected for microscopic analysis during an FlFFF run and evaluated with exosome marker proteins using Western blot analysis. The results indicated that exosomes of different sizes originated from different types of cells. Collected exosome fractions were further examined using nanoflow ultrahigh performance liquid chromatography-electrospray ionization-tandem mass spectrometry (nUPLC-ESI-MS/MS) for lipidomic analysis. A total of 162 lipids (from 286 identified) were quantified using a selected reaction monitoring (SRM) method. The overall amount of lipids increased by 1.5- to 2-fold in patients with PCa and degree of increase was more significant in the smaller fractions (diameter <150 nm) than in the larger ones (diameter >150 nm) some classes of lipids. In addition, neutral lipids like diacylglycerol (DAG) and triacylglycerol (TAG) decreased in all exosomes without size dependency. Moreover, a dramatic increase in 22:6/22:6-phosphatidylglycerol (PG) was observed and significant decrease in (16:0,16:0)- and (16:1, 18:1)-DAG species (nearly 5-fold) and high abundant TAG species (>2.5-fold) was observed in patients with PCa. The results of this study indicate that FlFFF can be employed for the high-speed screening of urinary exosome sizes in patients with PCa and lipidomic analysis of the fractionated exosomes has potential for developing and distinguishing biomarkers of PCa.
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Affiliation(s)
- Joon Seon Yang
- Department of Chemistry, Yonsei University , 50 Yonsei-Ro, Seoul, 03722 South Korea
| | - Jong Cheol Lee
- Department of Chemistry, Yonsei University , 50 Yonsei-Ro, Seoul, 03722 South Korea
| | - Seul Kee Byeon
- Department of Chemistry, Yonsei University , 50 Yonsei-Ro, Seoul, 03722 South Korea
| | - Koon Ho Rha
- Department of Urology, Yonsei University College of Medicine , 50-1 Yonsei-Ro, Seoul, 03722 South Korea
| | - Myeong Hee Moon
- Department of Chemistry, Yonsei University , 50 Yonsei-Ro, Seoul, 03722 South Korea
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Kim MS, Byun JS, Yoon YS, Yum DY, Chung MJ, Lee JC. A probiotic combination attenuates experimental colitis through inhibition of innate cytokine production. Benef Microbes 2016; 8:231-241. [PMID: 28008786 DOI: 10.3920/bm2016.0031] [Citation(s) in RCA: 16] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Inflammatory bowel disease (IBD) is a severe immune cell-mediated syndrome characterised by extensive inflammatory and effector mucosal responses leading to tissue destruction in the colon and small intestine. The leading hypothesis is that dysbiosis of the gut flora causes an excessive immune response and inflammation in the gastrointestinal track. Lactic acid bacteria (LAB) can correct dysbiosis of the normal microbiota. In the current study, the therapeutic potential of seven LAB strains in combination to treat IBD was evaluated using experimental colitis model. This LAB cocktail, designated GI7, includes four strains of Lactobacillus acidophilus, Lactobacillus plantarum, Lactobacillus rhamnosus, Lactococcus lactis, two strains of Bifidobacterium bifidum, Bifidobacterium breve, and one strain of Streptococcus thermophilus. We confirmed that GI7 suppressed pro-inflammatory cytokines in Raw264.7 macrophages. When dextran sulphate sodium-induced colitic mice were treated with GI7, their symptoms of colitis, as assessed by body weight, colon length, myeloperoxidase activity, intestinal bleeding, and histological damage, were reduced compared to untreated mice. In addition, GI7 treatment significantly inhibited the production of innate pro-inflammatory cytokines during colitic progression. Therefore, we suggest that GI7, a combination of seven LAB, has a potential role in the treatment of IBD.
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Affiliation(s)
- M S Kim
- 1 R&D Center, Cell Biotech Co. Ltd., 134 Gaegok-Ri, Wolgot-Myeon Gimpo-Si, Gyeonggi-Do 10003, Republic of Korea
| | - J S Byun
- 1 R&D Center, Cell Biotech Co. Ltd., 134 Gaegok-Ri, Wolgot-Myeon Gimpo-Si, Gyeonggi-Do 10003, Republic of Korea
| | - Y S Yoon
- 1 R&D Center, Cell Biotech Co. Ltd., 134 Gaegok-Ri, Wolgot-Myeon Gimpo-Si, Gyeonggi-Do 10003, Republic of Korea
| | - D Y Yum
- 1 R&D Center, Cell Biotech Co. Ltd., 134 Gaegok-Ri, Wolgot-Myeon Gimpo-Si, Gyeonggi-Do 10003, Republic of Korea
| | - M J Chung
- 1 R&D Center, Cell Biotech Co. Ltd., 134 Gaegok-Ri, Wolgot-Myeon Gimpo-Si, Gyeonggi-Do 10003, Republic of Korea
| | - J C Lee
- 1 R&D Center, Cell Biotech Co. Ltd., 134 Gaegok-Ri, Wolgot-Myeon Gimpo-Si, Gyeonggi-Do 10003, Republic of Korea
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Lee JC, Song YJ, Chung YS, Lee BJ, Jang YJ. Height and Shape of the Skull Base as Risk Factors for Skull Base Penetration during Endoscopic Sinus Surgery. Ann Otol Rhinol Laryngol 2016; 116:199-205. [PMID: 17419524 DOI: 10.1177/000348940711600307] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objectives: Computed tomography (CT) and magnetic resonance imaging have identified several risk factors for life-threatening complications of skull base penetration during endoscopic sinus surgery (ESS). We compared these risk factors between groups of patients with and without penetration. Methods: We performed a retrospective review of direct coronal paranasal sinus CT scans. Using preoperative CT scans of 100 patients without and 7 patients with penetration, we classified height into 4 groups and contour into 2 groups. The frequencies of shape and height differences of the right and left halves of the skull base were calculated in each group. Results: In 6 of the 7 patients who had skull base penetration, ESS was performed by a resident or junior staff member who had less than 3 years of experience with this technique. Shape asymmetry was seen in 4 of the 7 patients (57%) with penetration, which was a significantly higher rate than in patients without penetration (18 of 100; p = 032). The frequencies of a low skull base and a height difference were 15% and 28%, respectively. Conclusions: The most important risk factor for skull base penetration was the surgeon's inexperience. An asymmetry of shape of the right and left halves of the skull base was significantly related to inadvertent skull base penetration during ESS.
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Affiliation(s)
- Jong Cheol Lee
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
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Byeon SK, Lee JC, Chung BC, Seo HS, Moon MH. High-throughput and rapid quantification of lipids by nanoflow UPLC-ESI-MS/MS: application to the hepatic lipids of rabbits with nonalcoholic fatty liver disease. Anal Bioanal Chem 2016; 408:4975-85. [DOI: 10.1007/s00216-016-9592-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 04/11/2016] [Accepted: 04/20/2016] [Indexed: 01/17/2023]
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Park S, Lee JM, Sim CS, Kim JG, Nam JG, Lee TH, Han MW, Kwon JK, Lee JC. Impact of adenotonsillectomy on nocturnal enuresis in children with sleep-disordered breathing: A prospective study. Laryngoscope 2016; 126:1241-5. [PMID: 26928519 DOI: 10.1002/lary.25934] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Revised: 12/25/2015] [Accepted: 01/27/2016] [Indexed: 11/07/2022]
Abstract
OBJECTIVES/HYPOTHESIS To investigate the relationship between sleep-disordered breathing (SDB) and nocturnal enuresis (NE) in children and to prospectively evaluate the effectiveness of adenotonsillectomy on resolving enuresis in indicated SDB patients with NE. METHODS We prospectively collected data from 183 children (121 males, mean age 8.17 ± 2.84 years) who underwent adenotonsillectomy to treat SDB between July 2011 and July 2013, and analyzed the prevalence of NE. Before and 3 months after surgery, all parents were requested to answer a self-reported SDB scale questionnaire (22 questions, 0-22 points) and a NE questionnaire (episodes of enuresis per month). Paired t test, Student t test, and Chi-square test were used to analyze the data. RESULTS Overall prevalence of NE was 9.3% (17 patients) preoperatively and 1.5% postoperatively (four patients). After adenotonsillectomy, prevalence of NE and the mean SDB scale were significantly decreased (both P values < 0.001). After adenotonsillectomy, 13 of the 17 NE patients (76.5%) showed complete resolution. There was significantly higher prevalence of NE in patients with obstructive sleep apnea (OSA) than those without OSA (13.1%, 14 of 107 vs. 3.9%, 3 of 76; P = 0.036). CONCLUSION There is strong association between NE and SDB, and adenotonsillectomy can markedly improve enuresis in the majority of children with NE and SDB. LEVELS OF EVIDENCE 4. Laryngoscope, 126:1241-1245, 2016.
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Affiliation(s)
- Sungchan Park
- Department of Urology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Jung Min Lee
- Department of Otorhinolaryngology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Chang Sun Sim
- Department of Occupational and Environmental Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Jae Gi Kim
- Department of Otorhinolaryngology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Jung Gwon Nam
- Department of Otorhinolaryngology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Tae-Hoon Lee
- Department of Otorhinolaryngology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Myung Woul Han
- Department of Otorhinolaryngology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Joong Keun Kwon
- Department of Otorhinolaryngology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Jong Cheol Lee
- Department of Otorhinolaryngology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
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Zheng J, Hewage SRKM, Piao MJ, Kang KA, Han X, Kang HK, Yoo ES, Koh YS, Lee NH, Ko CS, Lee JC, Ko MH, Hyuna JW. Photoprotective Effect of Carpomitra costata Extract against Ultraviolet B-Induced Oxidative Damage in Human Keratinocytes. J Environ Pathol Toxicol Oncol 2016; 35:11-28. [PMID: 27279581 DOI: 10.1615/jenvironpatholtoxicoloncol.2016014003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Natural marine products show various biological properties such as antiphotoaging, antioxidant, anticancer, and anti-inflammation. This study evaluated the protective effects of the brown alga Carpomitra costata (Stackhouse) Batters (Sporochnaceae) against ultraviolet B (UVB)-provoked damage in human HaCaT keratinocytes. C. costata extract (CCE) effectively reduced superoxide anion, hydroxyl radical, and UVB-stimulated intracellular reactive oxygen species (ROS) levels. CCE also restored the expression and activity of UVB-suppressed antioxidant enzymes. Furthermore, CCE decreased UVB-triggered oxidative damage to cellular components including DNA, protein, and lipid and defended the cells against mitochondrial membrane depolarization-medicated apoptosis. The results of this study indicate that CCE can safeguard human keratinocytes against UVB-induced cellular damage via a potent antioxidant mechanism. CCE may find utility as part of a therapeutic arsenal against the damaging effects of UVB radiation on the skin.
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Affiliation(s)
- J Zheng
- School of Medicine, Jeju National University, Jeju, Republic of Korea
| | | | - Mei Jing Piao
- School of Medicine, Jeju National University, Jeju, Republic of Korea
| | - Kyoung Ah Kang
- School of Medicine, Jeju National University, Jeju, Republic of Korea
| | - X Han
- School of Medicine, Jeju National University, Jeju, Republic of Korea
| | - H K Kang
- School of Medicine, Jeju National University, Jeju, Republic of Korea
| | - E S Yoo
- School of Medicine, Jeju National University, Jeju, Republic of Korea
| | - Y S Koh
- School of Medicine, Jeju National University, Jeju, Republic of Korea
| | - N H Lee
- Department of Chemistry, College of Natural Sciences, Jeju National University, Jeju, Republic of Korea
| | - C S Ko
- Jeju Biodiversity Research Institute, Jeju Technopark, Jeju, Republic of Korea
| | - J C Lee
- Jeju Biodiversity Research Institute, Jeju Technopark, Jeju, Republic of Korea
| | - Mi Hee Ko
- Jeju Biodiversity Research Institute, Jeju Technopark, Jeju, Republic of Korea
| | - Jin Won Hyuna
- School of Medicine, Jeju National University, Jeju, Republic of Korea
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Lee YS, Park SH, Lee JC, Ha K. Multiwalled carbon nanotubes and fluoroelastomer antistatic nanocomposite for automotive fuel system components. KOREAN J CHEM ENG 2015. [DOI: 10.1007/s11814-015-0227-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Sim CS, Lee JH, Kim SH, Han MW, Kim Y, Oh I, Yun SC, Lee JC. Oxidative stress in schoolchildren with allergic rhinitis: propensity score matching case-control study. Ann Allergy Asthma Immunol 2015; 115:391-5. [PMID: 26371694 DOI: 10.1016/j.anai.2015.07.022] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Revised: 07/21/2015] [Accepted: 07/27/2015] [Indexed: 01/01/2023]
Abstract
BACKGROUND Oxidative stress is defined as an imbalance between the level of reactive oxygen species and antioxidant mechanisms. Compared with asthma, the role of oxidative stress in allergic rhinitis (AR) has received little attention. OBJECTIVE To investigate the association between overall systemic oxidative stress and AR. METHODS We used a propensity score matching case-control study and selected 90 children who had experienced AR in the previous year. This AR group was then matched with 90 healthy children who comprised the control group. Propensity score matching, a statistical matching technique that accounts for the conditional probability of receiving an exposure given a vector of measured covariates, is used to reduce selection bias and potential confounders in observational study. Serum total antioxidant status (TAS) and total oxidant status (TOS) levels were determined using a commercially available assay kit. Medical records and personal information were also reviewed. RESULTS No statistically significant differences were found between patients with regard to age, sex, height, weight, educational level of parent, monthly household income, or distance of home from a main road. The mean TAS and TOS levels in the patient group were significantly higher than those of the control group (P = .03 and .048, respectively). The oxidative stress index, which is defined as the ratio of TOS to TAS, also increased in the AR group with statistical propensity (P = .08). In a multivariate logistic analysis, only TAS and TOS levels were significantly associated with increased risk of allergic rhinitis. CONCLUSION Patients with AR have systemically elevated oxidative stress and systemically elevated TAS levels.
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Affiliation(s)
- Chang Sun Sim
- Department of Occupational and Environmental Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea; Environmental Health Center, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Ji-Ho Lee
- Department of Occupational and Environmental Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea; Environmental Health Center, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Song Hee Kim
- Department of Otorhinolaryngology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea; Biomedical Research Center, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Myung Woul Han
- Department of Otorhinolaryngology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea; Biomedical Research Center, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Yangho Kim
- Department of Occupational and Environmental Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea; Environmental Health Center, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Inbo Oh
- Environmental Health Center, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Sung-Cheol Yun
- Department of Clinical Epidemiology and Biostatistics and Department of Environmental Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jong Cheol Lee
- Department of Otorhinolaryngology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea; Biomedical Research Center, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea.
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Choi HJ, Lee JC, Lee YM. Hourglass epidermoid inclusion cyst of the hand. J Hand Surg Eur Vol 2015; 40:749-50. [PMID: 24212414 DOI: 10.1177/1753193413511576] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- H J Choi
- Department of Plastic and Reconstructive Surgery, College of Medicine, Soonchunhyang University, Cheonan, Korea
| | - J C Lee
- Department of Plastic and Reconstructive Surgery, College of Medicine, Soonchunhyang University, Cheonan, Korea
| | - Y M Lee
- Department of Plastic and Reconstructive Surgery, College of Medicine, Soonchunhyang University, Cheonan, Korea
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Yang X, Sheng W, Ridgley DM, Haidekker MA, Sun GY, Lee JC. Astrocytes regulate α-secretase-cleaved soluble amyloid precursor protein secretion in neuronal cells: Involvement of group IIA secretory phospholipase A2. Neuroscience 2015; 300:508-17. [PMID: 26037803 DOI: 10.1016/j.neuroscience.2015.05.052] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Revised: 05/20/2015] [Accepted: 05/21/2015] [Indexed: 12/19/2022]
Abstract
Astrocytes are major supportive cells in brains with important functions including providing nutrients and regulating neuronal activities. In this study, we demonstrated that astrocytes regulate amyloid precursor protein (APP) processing in neuronal cells through secretion of group IIA secretory phospholipase A2 (sPLA2-IIA). When astrocytic cells (DITNC) were mildly stimulated with the pro-inflammatory cytokines, such as TNF α and IL-1β, sPLA2-IIA was secreted into the medium. When conditioned medium containing sPLA2-IIA was applied to human neuroblastoma (SH-SY5Y) cells, there was an increase in both cell membrane fluidity and secretion of α-secretase-cleaved soluble amyloid precursor protein (sAPPα). These changes were abrogated by KH064, a selective inhibitor of sPLA2-IIA. In addition, exposing SH-SY5Y cells to recombinant human sPLA2-IIA also increased membrane fluidity, accumulation of APP at the cell surface, and secretion of sAPPα, but without altering total expressions of APP, α-secretases and β-site APP cleaving enzyme (BACE1). Taken together, our results provide novel information regarding a functional role of sPLA2-IIA in astrocytes for regulating APP processing in neuronal cells.
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Affiliation(s)
- X Yang
- Hope Center for Neurological Disorders and Department of Neurology, Washington University School of Medicine, St. Louis, MO 63110, United States
| | - W Sheng
- Department of Biochemistry, University of Missouri, Columbia, MO 65211, United States
| | - D M Ridgley
- Department of Bioengineering, University of Missouri, Columbia, MO 65211, United States
| | - M A Haidekker
- College of Engineering, Driftmier Engineering Center, University of Georgia, Athens, GA 30602, United States
| | - G Y Sun
- Department of Biochemistry, University of Missouri, Columbia, MO 65211, United States
| | - J C Lee
- Department of Bioengineering, University of Missouri, Columbia, MO 65211, United States; Department of Bioengineering, University of Illinois at Chicago, Chicago, IL 60607, United States.
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Glover AR, Zhao JT, Ip JC, Lee JC, Robinson BG, Gill AJ, Soon PSH, Sidhu SB. Long noncoding RNA profiles of adrenocortical cancer can be used to predict recurrence. Endocr Relat Cancer 2015; 22:99-109. [PMID: 25595289 DOI: 10.1530/erc-14-0457] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Adrenocortical carcinoma (ACC) is an aggressive malignancy with high rates of recurrence following surgical resection. Long noncoding RNAs (lncRNAs) play an important role in cancer development. Pathogenesis of adrenal tumours have been characterised by mRNA, microRNA and methylation expression signatures, but it is unknown if this extends to lncRNAs. This study describes lncRNA expression signatures in ACC, adrenal cortical adenoma (ACA) and normal adrenal cortex (NAC) and presents lncRNAs associated with ACC recurrence to identify novel prognostic and therapeutic targets. RNA was extracted from freshly frozen tissue with confirmation of diagnosis by histopathology. Focused lncRNA and mRNA transcriptome analysis was performed using the ArrayStar Human LncRNA V3.0 microarray. Differentially expressed lncRNAs were validated using quantitative reverse transcriptase-PCR and correlated with clinical outcomes. Microarray of 21 samples (ten ACCs, five ACAs and six NACs) showed distinct patterns of lncRNA expression between each group. A total of 956 lncRNAs were differentially expressed between ACC and NAC, including known carcinogenesis-related lncRNAs such as H19, GAS5, MALAT1 and PRINS (P≤0.05); 85 lncRNAs were differentially expressed between ACC and ACA (P≤0.05). Hierarchical clustering and heat mapping showed ACC samples correctly grouped compared with NAC and ACA. Sixty-six differentially expressed lncRNAs were found to be associated with ACC recurrence (P≤0.05), one of which, PRINS, was validated in a group of 20 ACCs and also found to be associated with metastatic disease on presentation. The pathogenesis of adrenal tumours extends to lncRNA dysregulation and low expression of the lncRNA PRINS is associated with ACC recurrence.
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Affiliation(s)
- A R Glover
- Cancer Genetics LaboratoryKolling Institute of Medical ResearchDepartments of EndocrinologyAnatomical PathologyRoyal North Shore Hospital and University of Sydney, St Leonards, New South Wales 2065, AustraliaDepartment of SurgeryBankstown Hospital and University of New South Wales, Bankstown, New South Wales 2065, AustraliaIngham Institute for Applied Medical ResearchLiverpool, New South Wales 2200, AustraliaUniversity of Sydney Endocrine Surgical UnitRoyal North Shore Hospital, St Leonards, New South Wales 2065, Australia
| | - J T Zhao
- Cancer Genetics LaboratoryKolling Institute of Medical ResearchDepartments of EndocrinologyAnatomical PathologyRoyal North Shore Hospital and University of Sydney, St Leonards, New South Wales 2065, AustraliaDepartment of SurgeryBankstown Hospital and University of New South Wales, Bankstown, New South Wales 2065, AustraliaIngham Institute for Applied Medical ResearchLiverpool, New South Wales 2200, AustraliaUniversity of Sydney Endocrine Surgical UnitRoyal North Shore Hospital, St Leonards, New South Wales 2065, Australia
| | - J C Ip
- Cancer Genetics LaboratoryKolling Institute of Medical ResearchDepartments of EndocrinologyAnatomical PathologyRoyal North Shore Hospital and University of Sydney, St Leonards, New South Wales 2065, AustraliaDepartment of SurgeryBankstown Hospital and University of New South Wales, Bankstown, New South Wales 2065, AustraliaIngham Institute for Applied Medical ResearchLiverpool, New South Wales 2200, AustraliaUniversity of Sydney Endocrine Surgical UnitRoyal North Shore Hospital, St Leonards, New South Wales 2065, Australia
| | - J C Lee
- Cancer Genetics LaboratoryKolling Institute of Medical ResearchDepartments of EndocrinologyAnatomical PathologyRoyal North Shore Hospital and University of Sydney, St Leonards, New South Wales 2065, AustraliaDepartment of SurgeryBankstown Hospital and University of New South Wales, Bankstown, New South Wales 2065, AustraliaIngham Institute for Applied Medical ResearchLiverpool, New South Wales 2200, AustraliaUniversity of Sydney Endocrine Surgical UnitRoyal North Shore Hospital, St Leonards, New South Wales 2065, Australia
| | - B G Robinson
- Cancer Genetics LaboratoryKolling Institute of Medical ResearchDepartments of EndocrinologyAnatomical PathologyRoyal North Shore Hospital and University of Sydney, St Leonards, New South Wales 2065, AustraliaDepartment of SurgeryBankstown Hospital and University of New South Wales, Bankstown, New South Wales 2065, AustraliaIngham Institute for Applied Medical ResearchLiverpool, New South Wales 2200, AustraliaUniversity of Sydney Endocrine Surgical UnitRoyal North Shore Hospital, St Leonards, New South Wales 2065, Australia Cancer Genetics LaboratoryKolling Institute of Medical ResearchDepartments of EndocrinologyAnatomical PathologyRoyal North Shore Hospital and University of Sydney, St Leonards, New South Wales 2065, AustraliaDepartment of SurgeryBankstown Hospital and University of New South Wales, Bankstown, New South Wales 2065, AustraliaIngham Institute for Applied Medical ResearchLiverpool, New South Wales 2200, AustraliaUniversity of Sydney Endocrine Surgical UnitRoyal North Shore Hospital, St Leonards, New South Wales 2065, Australia
| | - A J Gill
- Cancer Genetics LaboratoryKolling Institute of Medical ResearchDepartments of EndocrinologyAnatomical PathologyRoyal North Shore Hospital and University of Sydney, St Leonards, New South Wales 2065, AustraliaDepartment of SurgeryBankstown Hospital and University of New South Wales, Bankstown, New South Wales 2065, AustraliaIngham Institute for Applied Medical ResearchLiverpool, New South Wales 2200, AustraliaUniversity of Sydney Endocrine Surgical UnitRoyal North Shore Hospital, St Leonards, New South Wales 2065, Australia Cancer Genetics LaboratoryKolling Institute of Medical ResearchDepartments of EndocrinologyAnatomical PathologyRoyal North Shore Hospital and University of Sydney, St Leonards, New South Wales 2065, AustraliaDepartment of SurgeryBankstown Hospital and University of New South Wales, Bankstown, New South Wales 2065, AustraliaIngham Institute for Applied Medical ResearchLiverpool, New South Wales 2200, AustraliaUniversity of Sydney Endocrine Surgical UnitRoyal North Shore Hospital, St Leonards, New South Wales 2065, Australia
| | - P S H Soon
- Cancer Genetics LaboratoryKolling Institute of Medical ResearchDepartments of EndocrinologyAnatomical PathologyRoyal North Shore Hospital and University of Sydney, St Leonards, New South Wales 2065, AustraliaDepartment of SurgeryBankstown Hospital and University of New South Wales, Bankstown, New South Wales 2065, AustraliaIngham Institute for Applied Medical ResearchLiverpool, New South Wales 2200, AustraliaUniversity of Sydney Endocrine Surgical UnitRoyal North Shore Hospital, St Leonards, New South Wales 2065, Australia Cancer Genetics LaboratoryKolling Institute of Medical ResearchDepartments of EndocrinologyAnatomical PathologyRoyal North Shore Hospital and University of Sydney, St Leonards, New South Wales 2065, AustraliaDepartment of SurgeryBankstown Hospital and University of New South Wales, Bankstown, New South Wales 2065, AustraliaIngham Institute for Applied Medical ResearchLiverpool, New South Wales 2200, AustraliaUniversity of Sydney Endocrine Surgical UnitRoyal North Shore Hospital, St Leonards, New South Wales 2065, Australia
| | - S B Sidhu
- Cancer Genetics LaboratoryKolling Institute of Medical ResearchDepartments of EndocrinologyAnatomical PathologyRoyal North Shore Hospital and University of Sydney, St Leonards, New South Wales 2065, AustraliaDepartment of SurgeryBankstown Hospital and University of New South Wales, Bankstown, New South Wales 2065, AustraliaIngham Institute for Applied Medical ResearchLiverpool, New South Wales 2200, AustraliaUniversity of Sydney Endocrine Surgical UnitRoyal North Shore Hospital, St Leonards, New South Wales 2065, Australia Cancer Genetics LaboratoryKolling Institute of Medical ResearchDepartments of EndocrinologyAnatomical PathologyRoyal North Shore Hospital and University of Sydney, St Leonards, New South Wales 2065, AustraliaDepartment of SurgeryBankstown Hospital and University of New South Wales, Bankstown, New South Wales 2065, AustraliaIngham Institute for Applied Medical ResearchLiverpool, New South Wales 2200, AustraliaUniversity of Sydney Endocrine Surgical UnitRoyal North Shore Hospital, St Leonards, New South Wales 2065, Australia
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Abstract
Wnt signaling plays an essential role in the dental epithelium and mesenchyme during tooth morphogenesis. However, it remains unclear if Wnt ligands, produced from dental mesenchyme, are necessary for odontoblast differentiation and dentin formation. Here, we show that odontoblast-specific disruption of Wntless (Wls), a chaperon protein that regulates Wnt sorting and secretion, leads to severe defects in dentin formation and root elongation. Dentin thickness decreased remarkably and pulp chambers enlarged in the mandibular molars of OC-Cre;Wls(CO/CO) mice. Although the initial odontoblast differentiation was normal in the mutant crown, odontoblasts became cuboidal and dentin thickness was reduced. In immunohistochemistry, Wnt10a, β-catenin, type I collagen, and dentin sialoprotein were significantly down-regulated in the odontoblasts of mutant crown. In addition, roots were short and root canals were widened. Cell proliferation was reduced in the developing root apex of mutant molars. Furthermore, Wnt10a and Axin2 expression was remarkably decreased in the odontoblasts of mutant roots. Deletion of the Wls gene in odontoblasts appears to reduce canonical Wnt activity, leading to inhibition of odontoblast maturation and root elongation.
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Affiliation(s)
- C H Bae
- Cluster for Craniofacial Development and Regeneration Research, Institute of Oral Biosciences, Chonbuk National University School of Dentistry, Jeonju, South Korea
| | - T H Kim
- Cluster for Craniofacial Development and Regeneration Research, Institute of Oral Biosciences, Chonbuk National University School of Dentistry, Jeonju, South Korea
| | - S O Ko
- Cluster for Craniofacial Development and Regeneration Research, Institute of Oral Biosciences, Chonbuk National University School of Dentistry, Jeonju, South Korea
| | - J C Lee
- Cluster for Craniofacial Development and Regeneration Research, Institute of Oral Biosciences, Chonbuk National University School of Dentistry, Jeonju, South Korea
| | - X Yang
- Genetic Laboratory of Development and Disease, Institute of Biotechnology, Beijing, China
| | - E S Cho
- Cluster for Craniofacial Development and Regeneration Research, Institute of Oral Biosciences, Chonbuk National University School of Dentistry, Jeonju, South Korea
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Abstract
Bone and dentin share similar biochemical compositions and physiological properties. Dentin, a major tooth component, is formed by odontoblasts; in contrast, bone is produced by osteoblasts. Osterix (Osx), a zinc finger-containing transcription factor, has been identified as an essential regulator of osteoblast differentiation and bone formation. However, it has been difficult to establish whether Osx functions in odontoblast differentiation and dentin formation. To understand the role of Osx in dentin formation, we analyzed mice in which Osx was subjected to tissue-specific ablation under the control of either the Col1a1 or the OC promoter. Two independent Osx conditional knockout mice exhibited similar molar abnormalities. Although no phenotype was found in the crowns of these teeth, both mutant lines exhibited short molar roots due to impaired root elongation. Furthermore, the interradicular dentin in these mice showed severe hypoplastic features, which were likely caused by disruptions in odontoblast differentiation and dentin formation. These phenotypes were closely related to the temporospatial expression pattern of Osx during tooth development. These findings indicate that Osx is required for root formation by regulating odontoblast differentiation, maturation, and root elongation. Cumulatively, our data strongly indicate that Osx is a site-specific regulator in tooth root formation.
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Affiliation(s)
- T H Kim
- Cluster for Craniofacial Development and Regeneration Research, Institute of Oral Biosciences, Chonbuk National University School of Dentistry, Jeonju, South Korea
| | - C H Bae
- Cluster for Craniofacial Development and Regeneration Research, Institute of Oral Biosciences, Chonbuk National University School of Dentistry, Jeonju, South Korea
| | - J C Lee
- Cluster for Craniofacial Development and Regeneration Research, Institute of Oral Biosciences, Chonbuk National University School of Dentistry, Jeonju, South Korea
| | - J E Kim
- Department of Molecular Medicine, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - X Yang
- Genetic Laboratory of Development and Disease, Institute of Biotechnology, Beijing, China
| | - B de Crombrugghe
- Department of Molecular Genetics, The University of Texas M.D. Anderson Cancer Center, Houston, TX, USA
| | - E S Cho
- Cluster for Craniofacial Development and Regeneration Research, Institute of Oral Biosciences, Chonbuk National University School of Dentistry, Jeonju, South Korea
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Han MW, Lee JC, Kim YM, Cha HJ, Roh JL, Choi SH, Nam SY, Cho KJ, Kim SW, Kim SY. Epithelial-mesenchymal transition: clinical implications for nodal metastasis and prognosis of tongue cancer. Otolaryngol Head Neck Surg 2014; 152:80-6. [PMID: 25389317 DOI: 10.1177/0194599814556061] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE The development of biomarkers for the prediction of lymph node metastasis and prognosis is critical for deciding the treatment modality of tongue cancer. The purpose of our study is to investigate the clinical implications of epithelial-mesenchymal transition (EMT) expression in tongue cancer. STUDY DESIGN Historical cohort study SETTING Tertiary-care hospital. SUBJECTS AND METHODS The study included 95 subjects with tongue cancer who underwent wide excision and neck dissection. According to characteristics of immunohistochemical staining for E-cadherin and vimentin, we classified the tumors as complete EMT phenotype, incomplete EMT phenotype, or epithelial phenotype. The correlation between risk factors and nodal metastasis was assessed, and disease-free survival (DFS) was analyzed. RESULTS Positive lymph nodes were detected in 46 (48.4%) patients and was found to correlate significantly with depth of invasion ≥ 4 mm and EMT expression on multivariate analysis (P = .030, P = .022, respectively). The mean follow-up period of all patients was 96.3 months (range, 6-149 months). Overall 5-year DFS was 61.7%. On multivariate analysis, the only factors affecting DFS were nodal stage and EMT expression (P = .033, P = .021, respectively). CONCLUSIONS Our study reveals that EMT expression is a significant biomarker for predicting lymph node metastasis and tumor recurrence in tongue cancer. Evaluation of EMT expression in tongue cancer can allow therapy to be offered accordingly.
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Affiliation(s)
- Myung Woul Han
- Department of Otolaryngology, Ulsan University Hospital, Ulsan, Republic of Korea
| | - Jong Cheol Lee
- Department of Otolaryngology, Ulsan University Hospital, Ulsan, Republic of Korea
| | - Young Min Kim
- Department of Pathology, Ulsan University Hospital, Ulsan, Republic of Korea
| | - Hee Jeong Cha
- Department of Pathology, Ulsan University Hospital, Ulsan, Republic of Korea
| | - Jong-Lyel Roh
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Seung-Ho Choi
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Soon Yuhl Nam
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Kyung-Ja Cho
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Seong Who Kim
- Department of Biochemistry and Molecular Biology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Sang Yoon Kim
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea Biomedical Research Institute, Korea Institute of Science and Technology, Seoul, Republic of Korea
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Lee JC, Lee WH, Min YJ, Cha HJ, Han MW, Chang HW, Kim SA, Choi SH, Kim SW, Kim SY. Development of TRAIL resistance by radiation-induced hypermethylation of DR4 CpG island in recurrent laryngeal squamous cell carcinoma. Int J Radiat Oncol Biol Phys 2014; 88:1203-11. [PMID: 24661673 DOI: 10.1016/j.ijrobp.2013.12.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Revised: 12/09/2013] [Accepted: 12/12/2013] [Indexed: 01/22/2023]
Abstract
PURPOSE There are limited therapeutic options for patients with recurrent head and neck cancer after radiation therapy failure. To assess the use of tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) as a salvage chemotherapeutic agent for recurrent cancer after radiation failure, we investigated the effect of clinically relevant cumulative irradiation on TRAIL-induced apoptosis. METHODS AND MATERIALS Using a previously established HN3 cell line from a laryngeal carcinoma patient, we generated a chronically irradiated HN3R isogenic cell line. Viability and apoptosis in HN3 and HN3R cells treated with TRAIL were analyzed with MTS and PI/annexin V-FITC assays. Western blotting and flow cytometry were used to determine the underlying mechanism of TRAIL resistance. DR4 expression was semiquantitatively scored in a tissue microarray with 107 laryngeal cancer specimens. Methylation-specific polymerase chain reaction and bisulfite sequencing for DR4 were performed for genomic DNA isolated from each cell line. RESULTS HN3R cells were more resistant than HN3 cells to TRAIL-induced apoptosis because of significantly reduced levels of the DR4 receptor. The DR4 staining score in 37 salvage surgical specimens after radiation failure was lower in 70 surgical specimens without radiation treatment (3.03 ± 2.75 vs 5.46 ± 3.30, respectively; P<.001). HN3R cells had a methylated DR4 CpG island that was partially demethylated by the DNA demethylating agent 5-aza-2'-deoxycytidine. CONCLUSION Epigenetic silencing of the TRAIL receptor by hypermethylation of a DR4 CpG island might be an underlying mechanism for TRAIL resistance in recurrent laryngeal carcinoma treated with radiation.
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Affiliation(s)
- Jong Cheol Lee
- Department of Otorhinolaryngology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea; Department of Biomedical Research Center, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Won Hyeok Lee
- Department of Biomedical Research Center, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Young Joo Min
- Department of Biomedical Research Center, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea; Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Hee Jeong Cha
- Department of Pathology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Myung Woul Han
- Department of Otorhinolaryngology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Hyo Won Chang
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Sun-A Kim
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Seung-Ho Choi
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Seong Who Kim
- Department of Biochemistry and Molecular Biology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
| | - Sang Yoon Kim
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea; Biomedical Research Institute, Korea Institute of Science and Technology, Seoul, Republic of Korea.
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Lee JC, Jeong YK, Kim JM, Kang JG. Sensitized luminescence of Eu(III) complexes with Schiff-base and 1,10-phenanthroline: role of Schiff-base as a sensitizer. Spectrochim Acta A Mol Biomol Spectrosc 2014; 124:256-264. [PMID: 24486869 DOI: 10.1016/j.saa.2013.12.117] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Revised: 12/24/2013] [Accepted: 12/30/2013] [Indexed: 06/03/2023]
Abstract
The synthesis and characterization of two europium(III) complexes, [Eu(L)(H2O)]Cl and [Eu(L)(phen)(H2O)]Cl (L=N,N'-bis(salicylidene)-3,6-dioxa-1,8-diaminooctanato and phen=1,10-phenanthroline) are reported. Exciting the Eu(III) complexes with near-UV light resulted in sensitized red luminescence by a transfer of energy from the triplet excited states of L to the Eu(III) ion. Introducing phen to the complex increased the quantum yield of the L-sensitized luminescence of [Eu(L)(phen)(H2O)](+) by more than 18 times relative to [Eu(L)(H2O)](+). The optimized structures and the configurational interaction singles (CIS) of the [Eu(L)(phen)(H2O)](+) and [Eu(L)(H2O)](+) molecules were theoretically studied using ab initio Hartree-Fock (HF). The theoretical calculations showed that the first nearly degenerate 1A and 2A excited states, more specifically the π→π(*) transitions of the two phenolate terminals, contributed significantly to the energy transfer process. Although the phen excitation route was forbidden in [Eu(L)(phen)(H2O)](+), the coordination of phen enhanced the absorbing ability of L markedly and caused the energy transfer from the 1A and 2A states to the (5)D1 and (5)D0 states of Eu(III) to predominate over any radiative and nonradiative processes occurring between the excited states and the ground states of the L moiety. Consequently, the quantum yield of the sensitized luminescence was enhanced significantly in [Eu(L)(phen)(H2O)](+).
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Affiliation(s)
- Jong Cheol Lee
- Department of Chemistry, Chungnam National University, Daejeon 305-764, Republic of Korea; P.O. Box 35-5, Tech-3, Yuseong, Daejeon 305-600, Republic of Korea
| | - Yong-Kwang Jeong
- P.O. Box 35-5, Tech-3, Yuseong, Daejeon 305-600, Republic of Korea
| | - Jong-Moon Kim
- P.O. Box 35-5, Tech-3, Yuseong, Daejeon 305-600, Republic of Korea
| | - Jun-Gill Kang
- P.O. Box 35-5, Tech-3, Yuseong, Daejeon 305-600, Republic of Korea.
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Lightle DM, Quito-Avila D, Martin RR, Lee JC. Seasonal phenology of Amphorophora agathonica (Hemiptera: Aphididae) and spread of viruses in red raspberry in Washington. Environ Entomol 2014; 43:467-473. [PMID: 24763099 DOI: 10.1603/en13213] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Amphorophora agathonica (Hottes) is the primary vector of aphid-transmitted viruses in red raspberry in the Pacific Northwest region of the United States. To better understand the biology of the aphid, we estimated the lower developmental threshold and studied the seasonal activity of A. agathonica in commercial fields in northern Washington state. In addition, we monitored the spread of raspberry viruses (raspberry latent virus and raspberry leaf mottle virus, RLMV) to determine how rapidly fields became infected and whether there was a relationship between aphid presence and infection. The lower developmental threshold of A. agathonica was estimated to be 2.7°C. In the field, apterous and alate aphid populations began rapidly increasing at ≍800 growing degree-days and peaked at 1,050 growing degree-days. RLMV spread rapidly, with 30-60% of plants in four different commercial fields testing positive after three growing seasons. There was no discernible relationship between the presence or abundance of aphids based on 10 leaves sampled per plant location, and the odds of that plant becoming infected with RLMV.
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Affiliation(s)
- D M Lightle
- Entomology Program, Oregon State University, 4017 Ag and Life Sciences Bldg., Corvallis, OR 97331, USA
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Woods JL, James DG, Lee JC, Walsh DB, Gent DH. Development of biological control of Tetranychus urticae (Acari: Tetranychidae) and Phorodon humuli (Hemiptera: Aphididae) in Oregon hop yards. J Econ Entomol 2014; 107:570-581. [PMID: 24772536 DOI: 10.1603/ec13488] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The temporal development of biological control of arthropod pests in perennial cropping systems is largely unreported. In this study, the development of biological control of twospotted spider mite, Tetranychus urticae Koch, and hop aphid, Phorodon humuli (Schrank), in a new planting of hop in Oregon is described over a period of 9 yr (2005-2013). Both the abundance and diversity of natural enemies increased over time. Known predators of hop aphid (Coccinellidae and Anthocoridae) were present in all years; however, stable biological control of hop aphid was not achieved in most years and aphicides were required to suppress populations at commercially acceptable levels in 5 of 9 yr. Populations of aphidophagous coccinellids developed synchronously with hop aphid populations, and temporal correlations indicated these are the primary predatory insect associated with hop aphid regulation. However, sampling methods did not assess levels of aphid parasitoids and hyperparasitoids and their contribution to biological control was unquantified. Spider mite biological control was associated primarily with predatory mites (Phytoseiidae) and Stethorus spp. (Coccinellidae). The magnitude of temporal correlations of abundance of these predators with spider mites was found to be greatest on the same sampling dates and at lags of 7-14 d. Stable biological control of spider mites occurred after four field seasons, suppressing spider mites to levels similar to those commonly achieved with chemical control. A survey of 11 commercial hop yards in Oregon documented pest and natural enemy densities under commercial management practices over a period of 4 yr (2008-2011). Natural enemy abundance in commercial hop yards was similar to that of a 2- to 3-yr-old hop yard with limited disturbance. Whereas total reliance on biological control for hop aphid is unlikely to be successful, there appears to be unrealized potential for biological control of spider mites in commercial production. Dynamic action thresholds that consider the value of natural enemies are needed for both pests.
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