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Park M, Lee JS, Jung WH, Lee YW. pH-Dependent Expression, Stability, and Activity of Malassezia restricta MrLip5 Lipase. Ann Dermatol 2020; 32:473-480. [PMID: 33911790 PMCID: PMC7875232 DOI: 10.5021/ad.2020.32.6.473] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 05/08/2020] [Accepted: 05/29/2020] [Indexed: 01/09/2023] Open
Abstract
Background The lipophilic yeasts Malassezia spp. are normally resident on the surface of the human body, and often associated with various skin diseases. Of the 18 known Malassezia spp., Malassezia restricta is the most predominantly identified Malassezia sp. found on the human skin. Malassezia possesses a large number of genes encoding lipases to degrade human sebum triglycerides into fatty acids, which are required not only for their growth, but also trigger skin diseases. Previously, we have shown that MrLIP5 (MRET_0930), one of the 12 lipase genes in the genome of M. restricta, and is the most frequently expressed lipase gene in the scalp of patients with dandruff. Objective In this study, we aimed to analyze the activity, stability, and expression of MrLip5, with particular focus on pH. Methods We heterologously expressed MrLip5 in Escherichia coli, and purified and analyzed its activity and expression under different pH conditions. Results We found that MrLip5 was most active and stable and highly expressed under alkaline conditions, which is similar to that of the diseased skin surface. Conclusion Our results suggest that the activity and expression of MrLip5 are pH-dependent, and that this lipase may play an essential role at the M. restricta-host interface during disease progression.
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Affiliation(s)
- Minji Park
- Department of Systems Biotechnology, Chung-Ang University, Anseong, Korea
| | - Ji Su Lee
- Department of Dermatology, Konkuk University School of Medicine, Korea
| | - Won Hee Jung
- Department of Systems Biotechnology, Chung-Ang University, Anseong, Korea
| | - Yang Won Lee
- Department of Dermatology, Konkuk University School of Medicine, Korea.,Research Institute of Medical Science, Konkuk University, Seoul, Korea
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Toyota T, Morimoto T, Kitai T, Park M, Sasaki Y, Kim K, Ehara N, Kobori A, Kinoshita M, Kaji S, Furukawa Y, Kimura T. Biodegradable-polymer versus durable-polymer drug eluting stents for coronary artery disease: systematic review and a meta-analysis. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2540] [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: 11/13/2022] Open
Abstract
Abstract
Background
Biodegradable polymer drug-eluting stents (BP-DES) has been developed to overcome the potential drawbacks of the first-generation durable polymer drug-eluting stents (DP-DES). However, it is still under debate whether BP-DES is associated with superior efficacy and safety over DP-DES.
Purpose
We sought to compare the effects of BP-DES and DP-DES in patients with coronary artery disease.
Methods
We performed systematic review and a meta-analysis of randomized controlled trials comparing BP-DES and DP-DES on clinical outcomes in patients with coronary artery disease using CE-mark approved drug-eluting stents (DES) with at least 1-year follow-up. We included 32 studies involving 39,686 patients (BP-DES: 21,439 patients, and DP-DES: 18,247 patients). Primary outcome measure was target vessel failure (TVF; equivalent to the composite of cardiac death, target-vessel myocardial infarction, or ischemia-driven target vessel revascularization). We performed subgroup analysis according to the DP-DES generations (newer-generation DP-DES: 15,179patients, and first-generation DP-DES: 3,068 patients), and the effects of newer-generation DP-DES was compared with the BP-DES according to the BP-DES strut thickness (Ultra-thin strut [<80μm]: 7,572 patients, Thin-strut [80–100μm]: 5,465 patients, and Thick-strut [≥80μm]: 5,876 patients).
Results
The odds for TVF was not significantly different between the BP-DES group and the DP-DES group in the entire study population (odds ratio [OR] 0.96, 95% confidence interval [CI] [0.90–1.02], P=0.20). The odds for TVF was significantly low in the BP-DES group relative to the first-generation DP-DES group, however the odds were comparable between the BP-DES group and the newer-generation DP-DES group (BP-DES versus first-generation DP-DES: OR 0.82, 95% CI [0.73–0.92], P<0.001, and BP-DES versus newer-generation DP-DES: OR 1.00, 95% CI [0.93–1.08], P=0.99). We also found no significant differences between the BP-DES and newer-generation DP-DES, in all subgroups stratified by the BP-DES strut thickness (Ultra-thin strut BP-DES versus newer-generation DP-DES: OR 0.88, 95% CI [0.76–1.02], P=0.10, Thin-strut BP-DES versus newer-generation DP-DES: OR 1.01, 95% CI [0.90–1.13], P=0.89, and Thick strut BP-DES versus newer-generation DP-DES: OR 1.11, 95% CI [0.99–1.25], P=0.08).
Conclusions
In this meta-analysis of randomized controlled trials evaluating clinical outcomes, there was no significant differences between BP-DES and DP-DES. We found beneficial effects of BP-DES relative to the first-generation DP-DES, however, there was no statistical differences between BP-DES and newer-generation DP-DES, irrespective of the BP-DES strut thickness.
Pooled odds ratios for clinical outcomes
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- T Toyota
- Kobe City Medical Center General Hospital, Department of Cardiovascular Medicine, Kobe, Japan
| | - T Morimoto
- Hyogo College of Medicine, Department of Clinical Epidemiology, Nishinomiya, Japan
| | - T Kitai
- Kobe City Medical Center General Hospital, Department of Cardiovascular Medicine, Kobe, Japan
| | - M Park
- Kobe City Medical Center General Hospital, Department of Cardiovascular Medicine, Kobe, Japan
| | - Y Sasaki
- Kobe City Medical Center General Hospital, Department of Cardiovascular Medicine, Kobe, Japan
| | - K Kim
- Kobe City Medical Center General Hospital, Department of Cardiovascular Medicine, Kobe, Japan
| | - N Ehara
- Kobe City Medical Center General Hospital, Department of Cardiovascular Medicine, Kobe, Japan
| | - A Kobori
- Kobe City Medical Center General Hospital, Department of Cardiovascular Medicine, Kobe, Japan
| | - M Kinoshita
- Kobe City Medical Center General Hospital, Department of Cardiovascular Medicine, Kobe, Japan
| | - S Kaji
- Kobe City Medical Center General Hospital, Department of Cardiovascular Medicine, Kobe, Japan
| | - Y Furukawa
- Kobe City Medical Center General Hospital, Department of Cardiovascular Medicine, Kobe, Japan
| | - T Kimura
- Kyoto University Graduate School of Medicine, Department of Cardiovascular Medicine, Kyoto, Japan
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Rak Lee S, Schalk F, Schwitalla JW, Benndorf R, Vollmers J, Kaster AK, de Beer ZW, Park M, Ahn MJ, Jung WH, Beemelmanns C, Kim KH. Polyhalogenation of Isoflavonoids by the Termite-Associated Actinomadura sp. RB99. J Nat Prod 2020; 83:3102-3110. [PMID: 32946237 DOI: 10.1021/acs.jnatprod.0c00676] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Based on high-resolution tandem mass spectrometry (HR-MS2) and global natural products social molecular networking (GNPS), we found that plant-derived daidzein and genistein derivatives are polyhalogenated by termite-associated Actinomadura species RB99. MS-guided purification from extracts of bacteria grown under optimized conditions led to the isolation of eight polychlorinated isoflavones, including six unreported derivatives, and seven novel polybrominated derivatives, two of which showed antimicrobial activity.
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Affiliation(s)
- Seoung Rak Lee
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Felix Schalk
- Leibniz Institute for Natural Product Research and Infection Biology-Hans Knöll Institute (HKI), Beutenbergstraße 11a, 07745 Jena, Germany
| | - Jan W Schwitalla
- Leibniz Institute for Natural Product Research and Infection Biology-Hans Knöll Institute (HKI), Beutenbergstraße 11a, 07745 Jena, Germany
| | - René Benndorf
- Leibniz Institute for Natural Product Research and Infection Biology-Hans Knöll Institute (HKI), Beutenbergstraße 11a, 07745 Jena, Germany
| | - John Vollmers
- Institute for Biological Interfaces 5, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Anne-Kristin Kaster
- Institute for Biological Interfaces 5, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Z Wilhelm de Beer
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Hatfield, 0083, Pretoria, South Africa
| | - Minji Park
- Department of Systems Biotechnology, Chung-Ang University, Anseong 17546, Republic of Korea
| | - Mi-Jeong Ahn
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Won Hee Jung
- Department of Systems Biotechnology, Chung-Ang University, Anseong 17546, Republic of Korea
| | - Christine Beemelmanns
- Leibniz Institute for Natural Product Research and Infection Biology-Hans Knöll Institute (HKI), Beutenbergstraße 11a, 07745 Jena, Germany
| | - Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
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Planchard D, Shin D, Choi J, Seo Y, Jung J, Park M, Reck M. 1377P Exploratory analyses of efficacy from a phase III study comparing SB8, a proposed bevacizumab biosimilar, and reference bevacizumab in patients with metastatic or recurrent non-squamous NSCLC. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1691] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Kim N, Park M, Yook T, Kim J. PND4 Exploratory Cost-Effectiveness Analysis of Thread Embedding Acupuncture Plus Usual Care Versus Usual Care Alone for Treating Sequelae in Bell's Palsy Patients: An Economic Evaluation Alongside a Clinical Trial. Value Health Reg Issues 2020. [DOI: 10.1016/j.vhri.2020.07.392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Abstract
Woodfordia uniflora is a flowering shrub unique to the Dhofar region of Oman and is used locally as a sedative and remedy for skin infection. However, no study to date has examined the pharmacological properties of this plant, and studies regarding phytochemicals present in W. uniflora are limited. Herein, phytochemical screening of the extract of W. uniflora was performed using LC/MS. Three new phenolic compounds, (±)-woodfordiamycin (1), woodfordic acid (2), and rhamnetin 3-O-(6″-galloyl)-β-d-glucopyranoside (3), together with 16 known compounds 4-19, were isolated from the antifungal fraction of the extract. The structures of the new compounds were established by NMR and HR-MS data, and their absolute configurations were established using chemical transformations, including Mosher's method, comparison of experimental and calculated electronic circular dichroism data, and gauge-including atomic orbital NMR chemical shift calculations, followed by DP4+ analysis. The isolated compounds (1-19) were tested for antifungal activity against human fungal pathogens Cryptococcus neoformans and Candida albicans. Compounds (±)-1 and 8 showed antifungal activity against C. neoformans, with the lowest minimum inhibitory concentrations of 1.8-1.9 μM, which was ∼10-fold lower than that of the currently available antifungal drug fluconazole, while (±)-1, 8, and 19 showed antifungal activity against C. albicans.
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Affiliation(s)
- Jae Sik Yu
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Minji Park
- Department of Systems Biotechnology, Chung-Ang University, Anseong 17546, Republic of Korea
| | - Changhyun Pang
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Luay Rashan
- Research Center, Biodiversity Unit, Dhofar University, Salalah, Sultanate of Oman
| | - Won Hee Jung
- Department of Systems Biotechnology, Chung-Ang University, Anseong 17546, Republic of Korea
| | - Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
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Lee W, Park M, Jun J, Lee J, Lee S, Chae H, Lee D, Lim B, Kyung Y, Alsowayan Y, You D, Song C, Jeong I, Hong J, Ahn H, Kim C, Hong B. Clinical outcomes and optimal strategies in primary female urethral cancer - a retrospective analysis at a single institute. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)32942-6] [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: 11/24/2022] Open
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58
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Cho YJ, Cho MH, Han B, Park M, Bak S, Park M. The Association between the Ratio of Energy Intake to Basal Metabolic Rate and Physical Activity to Sarcopenia: Using the Korea National Health and Nutrition Examination Surveys (2008-2011). Korean J Fam Med 2020; 41:167-174. [PMID: 32456384 PMCID: PMC7272368 DOI: 10.4082/kjfm.18.0127] [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: 08/01/2018] [Accepted: 01/09/2019] [Indexed: 11/23/2022] Open
Abstract
Background Sarcopenia is an important health problem, the risk factors of which a few studies have reported on. The purpose of this study was to evaluate the correlation between sarcopenia and the ratio of total energy intake to basal metabolic rate (BMR) as well as physical activity, and determine whether the relationship was different between younger and older age groups using data from the 2008–2011 Korea National Health and Nutrition Examination Survey. Methods We analyzed 16,313 subjects older than 19 years who had dual energy X-ray absorptiometry data. Sarcopenia was defined as an appendicular lean mass/weight (%) ratio of 1 standard deviation below the sex-specific mean value for a younger reference group, and BMR was calculated using the Harris–Benedict equation. A chi-squared test and logistic regression analyses were performed to evaluate the factors associated with sarcopenia. Results In this study, 15.2% of males and 15.4% of females had sarcopenia. Energy intake/BMR as well as physical activity was negatively related to sarcopenia risk. In stratified analysis by age and sex, strength exercises showed an inverse association with sarcopenia only in males under the age of 50 years (odds ratio, 0.577; P<0.0001), whereas higher energy intake/BMR was negatively associated with sarcopenia in each age and sex group. Conclusion Our findings suggest that adequate energy intake is important to prevent sarcopenia regardless of whether one exercises.
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Affiliation(s)
- Yu Jin Cho
- Department of Family Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Mi Hee Cho
- Department of Family Medicine, Seoul National University Health Service Center, Seoul, Korea
| | - Bomi Han
- Department of Family Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Minji Park
- Department of Family Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Seolah Bak
- Department of Family Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Minseon Park
- Department of Family Medicine, Seoul National University College of Medicine, Seoul, Korea
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Bhat AS, Wang L, Kaur S, Nawabit R, Highland K, Park M, Jellis C, Kwon D, Hill N, Mehra R, Pvdomics P. 0558 Sleep Disordered Breathing and Right Ventricular Electrocardiographic and Functional Characteristics in Group 1 Pulmonary Arterial Hypertension. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.555] [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: 11/14/2022] Open
Abstract
Abstract
Introduction
Right ventricular (RV) electrophysiologic and functional alterations related to sleep disordered breathing (SDB) in pulmonary arterial hypertension (PAH) are not well understood. We hypothesize an association between SDB and RV electrophysiological/functional measures in World Symposium of Pulmonary Hypertension (WSPH) Group 1 PAH.
Methods
The NHLBI multicenter PVDOMICS study (NCT02980887) enrolls patients with PAH undergoing a battery of assessments including home sleep apnea testing(NOX-T3, Carefusion®) or with historical sleep study data. Logistic(OR,95%CI) and linear(beta coefficients,95%CI) regression models adjusted for age, sex, race, body mass index (BMI, kg/m2), PAH medications, supplemental oxygen(O2), positive airway pressure(PAP) were used to assess associations of SDB(apnea hypopnea index,(AHI), ≥3% desaturations(hypopnea), percentage recording time with SaO2<90% (TRT<90%) with electrocardiographic measures: RV hypertrophy(RVH), right bundle branch block(RBBB), and right axis deviation(RAD), echocardiographically-derived RV systolic pressure(RVSP) and RV ejection fraction(RVEF) from cardiac MRI. Analyses were performed based on an overall significance level of 0.05, using SAS software (version 9.4, Cary, NC).
Results
The analysis consisted of 182 PAH participants with age: 52.5±13.9 years, 71.4% female, 88.9% Caucasian, BMI:30.3±7.8 kg/m2, RVEF: 37.3±11.6, and RVSP: 67.0±23.4. None of the electrocardiographic measures were associated with AHI and only RVH was significantly associated with TRT<90% (1.25:1.09,1.43),p=0.001. Although AHI was not associated with RVSP, a 10% increase in TRT<90% was associated with a 2.60mmHg increase in RVSP (2.60:1.44,3.76),p<0.001. Each 10-unit increase in AHI was associated with a 2.72% reduction of RVEF (-2.72:-4.89,-0.56),p=0.014, and each 10-unit increase in TRT<90% was associated with a 0.72% reduction of RVEF (-0.72:-1.38,-0.06),p=0.033.
Conclusion
We identify nocturnal hypoxia as a predictor of RV electrophysiological and functional alterations even after consideration of confounding factors. SDB as determined by AHI was also more so associated with reduced RVEF than hypoxia. Future mechanistic studies should focus on further elucidation of SDB and nocturnal hypoxia on pathogenesis of RV dysfunction in PAH.
Support
U01HL125218/U01HL125205/U01HL125212/U01HL125208/U01HL125175/U01HL125215, U01HL125177/Pulmonary Hypertension Association
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Affiliation(s)
- A S Bhat
- Cleveland Clinic Neurologic Institute, Cleveland, OH
| | - L Wang
- Cleveland Clinic Lerner Research Institute, Cleveland, OH
| | - S Kaur
- Cleveland Clinic Neurologic Institute, Cleveland, OH
| | - R Nawabit
- Cleveland Clinic Neurologic Institute, Cleveland, OH
| | - K Highland
- Cleveland Clinic Respiratory Institute, Cleveland, OH
| | - M Park
- Cleveland Clinic Heart and Vascular Institute, Cleveland, OH
| | - C Jellis
- Cleveland Clinic Heart and Vascular Institute, Cleveland, OH
| | - D Kwon
- Cleveland Clinic Heart and Vascular Institute, Cleveland, OH
| | - N Hill
- Tufts Medical Center Pulmonary, Critical Care & Sleep Divission, Boston, MA
| | - R Mehra
- Cleveland Clinic Neurologic Institute, Cleveland, OH
| | - P Pvdomics
- National Heart, Lung, Blood Institute (NHLBI), Bethesda, MD
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Dawson SC, Kim M, Reid K, Burgess HJ, Wyatt JK, Hedeker D, Park M, Rains JC, Espie CA, Taylor HL, Ong JC. 1151 Is Timing Of Light Exposure Different In Women With Chronic Migraine? Sleep 2020. [DOI: 10.1093/sleep/zsaa056.1145] [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: 11/14/2022] Open
Abstract
Abstract
Introduction
Light avoidance is a common coping behavior of individuals with migraine headaches. It is not known whether timing of light exposure is different in individuals with chronic migraine (CM) compared to those without migraine and how this may relate to headache frequency and severity. We tested this by examining timing of the brightest and darkest light and headaches in women with chronic migraines and healthy controls.
Methods
Sixteen women with CM (mean age = 33.07) and 18 female healthy controls (HC; mean age = 32.22) completed daily ratings of headache severity (0-10, severity > 2 classified as headache) concurrent with light exposure measured by wrist actigraphy for approximately one month (M=28.00 days, range=21-36). Start time of each day’s 10-hour periods of maximum light (M10) and 5-hour periods of lowest light (L5) were calculated and averaged for each participant. T-tests and Cohen’s d effect sizes were used to compare groups. Pearson correlation coefficients were calculated to examine associations between M10/L5 timing and headache frequency and severity.
Results
M10 was earlier in the CM group compared to the HC group (07:42±00:47 vs. 08:50±00:58, t(32)=3.69, p=0.0008, d=1.08). The CM group exhibited non-significant trend towards earlier L5 compared to the HC group (12:26±00:48 vs. 01:07±01:03, t(32)=1.89, p=0.0723, d=0.62). Among individuals with CM, later M10 timing was associated with more severe average daily headache (r=0.60, p=0.0136) and more frequent headaches (r=0.55, p=0.0257). Later L5 timing was significantly associated with more severe average daily headache (r=0.66, p=0.0052) and showed a non-significant trend toward association with more frequent headaches (r=0.47, p=0.0686).
Conclusion
Timing of the greatest light exposure period was earlier in CM compared to HC. Within the CM group, those who had earlier light and dark periods reported lower headache severity and fewer days with headaches. These findings suggest the possibility of a role for the circadian system in chronic migraine.
Support
This study was supported by grant R21NS081088 from the National Institutes of Health.
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Affiliation(s)
- S C Dawson
- Department of Neurology, Northwestern University, Chicago, IL
| | - M Kim
- Department of Neurology, Northwestern University, Chicago, IL
| | - K Reid
- Department of Neurology, Northwestern University, Chicago, IL
| | - H J Burgess
- Department of Psychiatry, University of Michigan, Ann Arbor, MI
| | - J K Wyatt
- Rush University Medical Center, Chicago, IL
| | | | - M Park
- Chicago Sleep Health, Advocate/Illinois Masonic Hospital, Chicago, IL
| | - J C Rains
- Center for Sleep Evaluation, Elliot Hospital, Manchester, NH
| | - C A Espie
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UNITED KINGDOM
| | - H L Taylor
- The Maine Sleep Center at Chest Medicine Associates, South Portland, ME
| | - J C Ong
- Department of Neurology, Northwestern University, Chicago, IL
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Ko Y, Lee G, Kim B, Park M, Jang Y, Lim W. Modification of the RANKL-RANK-binding site for the immunotherapeutic treatment of osteoporosis. Osteoporos Int 2020; 31:983-993. [PMID: 31863125 DOI: 10.1007/s00198-019-05200-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 10/16/2019] [Indexed: 12/20/2022]
Abstract
UNLABELLED Here, we proposed the use of mutated RANKL as an immunogen for active immunization and to induce anti-cytokine antibodies for osteoporosis treatment. INTRODUCTION Osteoclasts are responsible for bone resorption in bone-related disorders. Anti-cytokine therapeutic antibodies such as denosumab are effective for the treatment of osteoporosis. However, problems with antibody manufacturing and the immunogenicity caused by multiple antibody doses have led to the use of auto-cytokines as immunogens to induce anti-cytokine antibodies. METHODS RANKL was point-mutated based on the crystal structure of the complex of RANKL and its receptor RANK. RESULTS As a proof of concept, immunization with RANKL produced high levels of specific antibodies and blocked osteoclast development in vitro and inhibited osteoporosis in RANKL-treated or ovariectomized mouse models. CONCLUSIONS The results demonstrate the successful use of mutated RANKL as an immunogen for the induction of anti-RANKL immune response. This strategy is useful in general anti-cytokine immunotherapy to avoid toxic side effects of osteoporosis treatment.
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Affiliation(s)
- Y Ko
- Department of Orthopaedic Surgery, Chosun University Hospital, Gwangju, 61453, South Korea
- Laboratory of Orthopaedic Research, Chosun University Hospital, Gwangju, 61453, South Korea
| | - G Lee
- Department of Orthopaedic Surgery, Chosun University Hospital, Gwangju, 61453, South Korea
- Laboratory of Orthopaedic Research, Chosun University Hospital, Gwangju, 61453, South Korea
| | - B Kim
- Department of Orthopaedic Surgery, Chosun University Hospital, Gwangju, 61453, South Korea
- Laboratory of Orthopaedic Research, Chosun University Hospital, Gwangju, 61453, South Korea
| | - M Park
- Department of Orthopaedic Surgery, Chosun University Hospital, Gwangju, 61453, South Korea
- Laboratory of Orthopaedic Research, Chosun University Hospital, Gwangju, 61453, South Korea
| | - Y Jang
- Department of Orthopaedic Surgery, Chosun University Hospital, Gwangju, 61453, South Korea
- Laboratory of Orthopaedic Research, Chosun University Hospital, Gwangju, 61453, South Korea
- Department of Premedical Program, School of Medicine, Chosun University, Gwangju, 61452, South Korea
| | - W Lim
- Department of Orthopaedic Surgery, Chosun University Hospital, Gwangju, 61453, South Korea.
- Laboratory of Orthopaedic Research, Chosun University Hospital, Gwangju, 61453, South Korea.
- Department of Premedical Program, School of Medicine, Chosun University, Gwangju, 61452, South Korea.
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Le Du F, Takeo F, Park M, Hess K, Liu D, Jackson R, Mylander C, Rosman M, Raghavendra A, Tafra L, Ueno N. 10P Prediction of the 21-gene recurrence score by a non-genomic approach in stage I estrogen receptor-positive, HER2-negative breast cancer. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.03.146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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63
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Park M, Cho YJ, Lee YW, Jung WH. Genomic Multiplication and Drug Efflux Influence Ketoconazole Resistance in Malassezia restricta. Front Cell Infect Microbiol 2020; 10:191. [PMID: 32426297 PMCID: PMC7203472 DOI: 10.3389/fcimb.2020.00191] [Citation(s) in RCA: 6] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 04/09/2020] [Indexed: 12/24/2022] Open
Abstract
Malassezia restricta is an opportunistic fungal pathogen on human skin; it is associated with various skin diseases, including seborrheic dermatitis and dandruff, which are usually treated using ketoconazole. In this study, we clinically isolated ketoconazole-resistant M. restricta strains (KCTC 27529 and KCTC 27550) from patients with dandruff. To understand the mechanisms of ketoconazole resistance in the isolates, their genomes were sequenced and compared with the susceptible reference strain M. restricta KCTC 27527. Using comparative genome analysis, we identified tandem multiplications of the genomic loci containing ATM1 and ERG11 homologs in M. restricta KCTC 27529 and KCTC 27550, respectively. Additionally, we found that the copy number increase of ATM1 and ERG11 is reflected in the increased expression of these genes; moreover, we observed that overexpression of these homologs caused ketoconazole resistance in a genetically tractable fungal pathogen, Cryptococcus neoformans. In addition to tandem multiplications of the genomic region containing the ATM1 homolog, the PDR5 homolog, which encodes the drug efflux pump protein was upregulated in M. restricta KCTC 27529 compared to the reference strain. Biochemical analysis confirmed that drug efflux was highly activated in M. restricta KCTC 27529, implying that upregulation of the PDR5 homolog may also contribute to ketoconazole resistance in the strain. Overall, our results suggest that multiplication of the genomic loci encoding genes involved in ergosterol synthesis, mitochondrial iron metabolism, and oxidative stress response and overexpression of the drug efflux pumps are the mechanisms underlying ketoconazole resistance in M. restricta.
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Affiliation(s)
- Minji Park
- Department of Systems Biotechnology, Chung-Ang University, Anseong, South Korea
| | - Yong-Joon Cho
- School of Biological Sciences and Research Institute of Basic Sciences, Seoul National University, Seoul, South Korea
| | - Yang Won Lee
- Department of Dermatology, School of Medicine, Konkuk University, Seoul, South Korea.,Research Institute of Medicine, Konkuk University, Seoul, South Korea
| | - Won Hee Jung
- Department of Systems Biotechnology, Chung-Ang University, Anseong, South Korea
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64
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Khanna R, Saini R, Park M, Ellamparuthy G, Biswal SK, Mukherjee PS. Factors influencing the release of potentially toxic elements (PTEs) during thermal processing of electronic waste. Waste Manag 2020; 105:414-424. [PMID: 32126369 DOI: 10.1016/j.wasman.2020.02.026] [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] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Revised: 01/21/2020] [Accepted: 02/21/2020] [Indexed: 06/10/2023]
Abstract
The release of potentially toxic elements as airborne fine particulates is a significant environmental risk associated with recycling e-waste. Some of these may redeposit near emission sites or be transported over long distances causing wide-spread pollution. With an aim to identify key factors affecting particulate emissions, we report novel investigations on the adsorptive capture of particulate matter (PM) released during low temperature pyrolysis (600 °C; 15 min) of waste printed circuit boards (PCBs). A significant proportion of the released particulates (5.3 to 37%) were captured by adsorbents located downstream and in close proximity to the emitting source. Data was collected for four different PCBs and three adsorbents: alumina, silica-gel and activated carbon. With sizes ranging from nanoparticles to over 10 µm, adsorbed particulates were present as fines, spheres, oblongs, clusters and larger particles with no specific shape. Of the 24 elements identified initially in waste PCBs, only 14 were detected in released particulates: major PTEs- Zn, Sn, Pb and Cu (up to 400 ppm); minor PTEs- Ni, Mn, Cd, Cr and Ba (up to 10 ppm); trace PTEs- Co, In, Bi, Be and Sb (up to 1 ppm). Key factors influencing the release of PTEs during thermal processing were identified as basic elemental characteristics, densities, melting points, vapor pressures, initial concentrations, local bonding and mechanical strength. These results show that the presence of low melting point/high vapour pressure elements (Zn, Pb, Sn) should be minimised for a significant reduction in PTE emissions during e-waste processing.
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Affiliation(s)
- R Khanna
- School of Materials Science and Engineering (Ret.), The University of New South Wales, Kensington, Sydney, NSW 2052, Australia.
| | - R Saini
- Department of Mechanical Engineering, ABES Engineering College, Ghaziabad, 201009, India
| | - M Park
- Industrial Design, Australian School of Architecture and Design, The University of New South Wales, Kensington, Sydney, NSW 2052, Australia
| | - G Ellamparuthy
- Institute of Minerals and Materials Technology, Council of Scientific and Industrial Research, Sachivalaya Marg, Acharya Vihar, Bhubaneswar, Orissa 751013, India
| | - S K Biswal
- Institute of Minerals and Materials Technology, Council of Scientific and Industrial Research, Sachivalaya Marg, Acharya Vihar, Bhubaneswar, Orissa 751013, India
| | - P S Mukherjee
- Institute of Minerals and Materials Technology, Council of Scientific and Industrial Research, Sachivalaya Marg, Acharya Vihar, Bhubaneswar, Orissa 751013, India
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65
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Do Amaral Henrique De Souza A, Harms H, Campbell L, Bibbo C, Harrington M, Hainer J, Dorbala S, Blankstein R, Taqueti V, Kijewski M, Barbagelata A, Breault C, Park M, Di Carli M. P361 Assessment of accuracy and reproducibility of coronary flow reserve measured by SPECT in patients with known or suspected coronary artery disease. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Funding Acknowledgements
Spectrum Dynamics
Background
Traditional relative assessment of regional myocardial perfusion by single photon emission computed tomography (SPECT) has limited ability to identify multivessel coronary artery disease, as well as diffuse atherosclerosis and coronary microvascular dysfunction. Current gamma cameras with cadmium-zinc-telluride (CZT) detectors have higher temporal resolution and sensitivity and allow the acquisition of multi-frame images and quantification of absolute myocardial blood flow (MBF) and coronary flow reserve (CFR
Purpose
The aim of this study was to assess the accuracy and reproducibility of quantitative measurements of MBF and CFR obtained with a CZT SPECT system compared to PET in a cohort of patients with known or suspected coronary artery disease.
Methods
Accuracy was assessed in 22 patients who underwent dynamic rest/stress 99mTc-sestamibi-SPECT and 13N-ammonia PET myocardial perfusion imaging within two weeks of each other. Fourteen patients comprised the reproducibility cohort and underwent two dynamic 99mTc-sestamibi SPECT scans within two weeks. A rest/pharmacological stress single-day SPECT protocol was performed, using a 1:3 dose ratio. SPECT image reconstruction was performed using a spline-fitting method and SPECT MBF was quantified using a net retention kinetic model in commercially available software. Rest MBF and CFR were adjusted for heart-rate pressure product.
Results
Global MBF at rest and stress showed a good correlation between SPECT and PET (r = 0.814, p < 0.001). For global rest MBF the mean difference between the two techniques was -0.25 ± 0.24 ml/min/g, while for stress MBF mean difference was -0.21 ± 0.40 ml/min/g. We also observed a significant correlation between global SPECT and PET CFR measurements (r = 0.745, p < 0.001), with no significant difference between the two (mean difference: 0.16 ± 0.50). Regarding the reproducibility cohort, the correlation between global CFR measured by two SPECT scans was also significant (r = 0.616, p = 0.019), with a mean difference of 0.14 ±0.51. The mean difference between scans for rest MBF (-0.05 ± 0.19) and stress MBF (0.01 ± 0.42) were also not significant.
Conclusion
MBF and CFR quantification is feasible using a CZT gamma camera and provides accurate and reproducible results that correlate with 13N-ammonia PET. This may be of special relevance in sites where PET is not available, enabling MBF and CFR quantification with CZT SPECT cameras.
Abstract P361 Figure.
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Affiliation(s)
| | - H Harms
- Brigham and Women"s Hospital, Boston, United States of America
| | - L Campbell
- Brigham and Women"s Hospital, Boston, United States of America
| | - C Bibbo
- Brigham and Women"s Hospital, Boston, United States of America
| | - M Harrington
- Brigham and Women"s Hospital, Boston, United States of America
| | - J Hainer
- Brigham and Women"s Hospital, Boston, United States of America
| | - S Dorbala
- Brigham and Women"s Hospital, Boston, United States of America
| | - R Blankstein
- Brigham and Women"s Hospital, Boston, United States of America
| | - V Taqueti
- Brigham and Women"s Hospital, Boston, United States of America
| | - M Kijewski
- Brigham and Women"s Hospital, Boston, United States of America
| | - A Barbagelata
- Instituto Cardiovascular de Buenos Aires, Buenos Aires, Argentina
| | | | - M Park
- Brigham and Women"s Hospital, Boston, United States of America
| | - M Di Carli
- Brigham and Women"s Hospital, Boston, United States of America
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66
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Sasser M, Kunitsky C, Jackoway G, Ezzell JW, Teska JD, Harper B, Parker S, Barden D, Blair H, Breezee J, Carpenter J, Cheek WV, DeMartino M, Evans B, Ezzell, JW, Francesconi S, Franko E, Gardner W, Glazier M, Greth K, Harper B, Hart T, Hodel M, Holmes-Talbot, K, Hopkins KL, Iqbal A, Johnson D, Krader P, Madonna A, McDowell M, McKee ML, Park M, Parker S, Pentella, M, Radosevic J, Robison RA, Rotzoll B, Scott K, Smith M, Syed N, Tang J, Teska JD, Trinh H, Hudson LI, Wolcott M. Identification of Bacillus anthracis from Culture Using Gas Chromatographic Analysis of Fatty Acid Methyl Esters. J AOAC Int 2019. [DOI: 10.1093/jaoac/88.1.178] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
| | | | | | - John W Ezzell
- U.S. Army Medical Research Institute of Infectious Diseases, 1425 Porter St, Ft. Detrick, MD 21702
| | - Jeffrey D Teska
- U.S. Army Medical Research Institute of Infectious Diseases, 1425 Porter St, Ft. Detrick, MD 21702
| | - Bruce Harper
- U.S. Army Dugway Proving Ground, Life Sciences Division, Bldg 2029, Dugway, UT 84022
| | - Stephen Parker
- U.S. Army Dugway Proving Ground, Life Sciences Division, Bldg 2029, Dugway, UT 84022
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67
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Voelker D, Pitlick M, Gonzalez-Estrada A, Park M. P001 FEMALE SEX AS A RISK FACTOR FOR IGE MEDIATED PENICILLIN DRUG ALLERGY. Ann Allergy Asthma Immunol 2019. [DOI: 10.1016/j.anai.2019.08.230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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68
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Ahn Y, Seo J, Hwang S, Lee E, Kim J, Park M, Almurayshid A, Yu J, Oh S. 364 Adenosine triphosphate-P2X7 axis mediates melanocyte death and skin trafficking of CD8+ T cells by CXCL9 through inflammasome activation in vitiligo. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.366] [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: 11/30/2022]
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69
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Kim JY, Ohn J, Yoon JS, Kang BM, Park M, Kim S, Lee W, Hwang S, Kim JI, Kim KH, Kwon O. Priming mobilization of hair follicle stem cells triggers permanent loss of regeneration after alkylating chemotherapy. Nat Commun 2019; 10:3694. [PMID: 31455775 PMCID: PMC6711970 DOI: 10.1038/s41467-019-11665-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 07/29/2019] [Indexed: 02/06/2023] Open
Abstract
The maintenance of genetic integrity is critical for stem cells to ensure homeostasis and regeneration. Little is known about how adult stem cells respond to irreversible DNA damage, resulting in loss of regeneration in humans. Here, we establish a permanent regeneration loss model using cycling human hair follicles treated with alkylating agents: busulfan followed by cyclophosphamide. We uncover the underlying mechanisms by which hair follicle stem cells (HFSCs) lose their pool. In contrast to immediate destructive changes in rapidly proliferating hair matrix cells, quiescent HFSCs show unexpected massive proliferation after busulfan and then undergo large-scale apoptosis following cyclophosphamide. HFSC proliferation is activated through PI3K/Akt pathway, and depletion is driven by p53/p38-induced cell death. RNA-seq analysis shows that HFSCs experience mitotic catastrophe with G2/M checkpoint activation. Our findings indicate that priming mobilization causes stem cells to lose their resistance to DNA damage, resulting in permanent loss of regeneration after alkylating chemotherapy. Hair follicles (HFs) are sensitive to chemotherapy but recover from quiescent HF stem cells, although sometimes chemotherapy results in permanent loss. Here, Kim et al. establish a model of permanent chemotherapy-induced alopecia to uncover the underlying mechanisms depleting human HF stem cells.
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Affiliation(s)
- Jin Yong Kim
- Department of Dermatology, Seoul National University College of Medicine, Seoul, 03080, Korea.,Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Seoul, 03080, Korea.,Laboratory of Cutaneous Aging and Hair Research, Biomedical Research Institute, Seoul National University Hospital, Seoul, 03080, Korea
| | - Jungyoon Ohn
- Department of Dermatology, Seoul National University College of Medicine, Seoul, 03080, Korea.,Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Seoul, 03080, Korea.,Laboratory of Cutaneous Aging and Hair Research, Biomedical Research Institute, Seoul National University Hospital, Seoul, 03080, Korea
| | - Ji-Seon Yoon
- Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Seoul, 03080, Korea.,Laboratory of Cutaneous Aging and Hair Research, Biomedical Research Institute, Seoul National University Hospital, Seoul, 03080, Korea
| | - Bo Mi Kang
- Department of Dermatology, Seoul National University College of Medicine, Seoul, 03080, Korea.,Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Seoul, 03080, Korea.,Laboratory of Cutaneous Aging and Hair Research, Biomedical Research Institute, Seoul National University Hospital, Seoul, 03080, Korea
| | - Minji Park
- Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Seoul, 03080, Korea.,Laboratory of Cutaneous Aging and Hair Research, Biomedical Research Institute, Seoul National University Hospital, Seoul, 03080, Korea.,Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, 03080, Korea
| | - Sookyung Kim
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, 03080, Korea.,Department of Biochemistry and Molecular Biology, Seoul National University College of Medicine, Seoul, 03080, Korea
| | - Woochan Lee
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, 03080, Korea.,Department of Biochemistry and Molecular Biology, Seoul National University College of Medicine, Seoul, 03080, Korea
| | | | - Jong-Il Kim
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, 03080, Korea.,Department of Biochemistry and Molecular Biology, Seoul National University College of Medicine, Seoul, 03080, Korea
| | - Kyu Han Kim
- Department of Dermatology, Seoul National University College of Medicine, Seoul, 03080, Korea.,Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Seoul, 03080, Korea.,Laboratory of Cutaneous Aging and Hair Research, Biomedical Research Institute, Seoul National University Hospital, Seoul, 03080, Korea
| | - Ohsang Kwon
- Department of Dermatology, Seoul National University College of Medicine, Seoul, 03080, Korea. .,Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Seoul, 03080, Korea. .,Laboratory of Cutaneous Aging and Hair Research, Biomedical Research Institute, Seoul National University Hospital, Seoul, 03080, Korea.
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70
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Dankner M, Senecal J, Neubarth NS, Bertos N, Park M, Issa-Chergui B, Asselah J, Siegel PM, Bouganim N. A survey of health care professionals and oncology patients at the McGill University Health Centre reveals enthusiasm for establishing a postmortem rapid tissue donation program. ACTA ACUST UNITED AC 2019; 26:e558-e570. [PMID: 31548825 DOI: 10.3747/co.26.4771] [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] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Background In the early developmental phase of a postmortem rapid tissue donation (rtd) program for patients with metastatic cancer, we surveyed health care professionals (hcps) and oncology patients at the McGill University Health Centre (muhc) to assess their knowledge and attitudes pertaining to rtd from metastatic cancer patients for research purposes. Methods A 23-item survey was developed and distributed to hcps at tumour board meetings, and a related 26-item survey was developed and distributed to oncology patients at the muhc Cedars Cancer Centre. Results The survey attracted participation from 73 hcps, including 37 attending physicians, and 102 oncology patients. Despite the fact that 88% of hcps rated their knowledge of rtd as none or limited, 42% indicated that they would feel comfortable discussing rtd with their cancer patients. Of the responding hcps, 67% indicated that their current knowledge of rtd would affect their decision to discuss such a program with patients, which implies the importance of education for hcps to facilitate enrolment of patients into a rtd program. Of responding patients, 78% indicated that they would not be uncomfortable if their doctor discussed rtd with them, and 61% indicated that they would like it if their doctor were to discuss rtd with them. The hcps and patients felt that the best time for patients to be approached about consenting to a rtd program would be at the transition to palliative care when no treatment options remain. Conclusions At the muhc, hcps and patients are generally enthusiastic about adopting a rtd program for patients with metastatic cancer. Education of hcps and patients will be an important determinant of the program's success.
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Affiliation(s)
- M Dankner
- Goodman Cancer Research Centre, Montreal, QC.,Department of Experimental Medicine, McGill University, Montreal, QC
| | - J Senecal
- Goodman Cancer Research Centre, Montreal, QC.,Department of Experimental Medicine, McGill University, Montreal, QC
| | - N S Neubarth
- Goodman Cancer Research Centre, Montreal, QC.,Department of Anatomy and Cell Biology, McGill University, Montreal, QC
| | - N Bertos
- Research Institute of the McGill University Health Centre, Montreal, QC
| | - M Park
- Goodman Cancer Research Centre, Montreal, QC.,Research Institute of the McGill University Health Centre, Montreal, QC.,Department of Pathology, McGill University, Montreal, QC.,Department of Biochemistry, McGill University, Montreal, QC
| | - B Issa-Chergui
- Department of Pathology, McGill University, Montreal, QC.,Cedars Cancer Centre, Montreal, QC
| | - J Asselah
- Cedars Cancer Centre, Montreal, QC.,McGill University Health Centre, Montreal, QC
| | - P M Siegel
- Goodman Cancer Research Centre, Montreal, QC.,Department of Experimental Medicine, McGill University, Montreal, QC.,Department of Anatomy and Cell Biology, McGill University, Montreal, QC.,Research Institute of the McGill University Health Centre, Montreal, QC.,Department of Biochemistry, McGill University, Montreal, QC
| | - N Bouganim
- Cedars Cancer Centre, Montreal, QC.,McGill University Health Centre, Montreal, QC
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71
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Do E, Lee HG, Park M, Cho YJ, Kim DH, Park SH, Eun D, Park T, An S, Jung WH. Antifungal Mechanism of Action of Lauryl Betaine Against Skin-Associated Fungus Malassezia restricta. Mycobiology 2019; 47:242-249. [PMID: 31448144 PMCID: PMC6691833 DOI: 10.1080/12298093.2019.1625175] [Citation(s) in RCA: 4] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 05/21/2019] [Accepted: 05/24/2019] [Indexed: 06/10/2023]
Abstract
Betaine derivatives are considered major ingredients of shampoos and are commonly used as antistatic and viscosity-increasing agents. Several studies have also suggested that betaine derivatives can be used as antimicrobial agents. However, the antifungal activity and mechanism of action of betaine derivatives have not yet been fully understood. In this study, we investigated the antifungal activity of six betaine derivatives against Malassezia restricta, which is the most frequently isolated fungus from the human skin and is implicated in the development of dandruff. We found that, among the six betaine derivatives, lauryl betaine showed the most potent antifungal activity. The mechanism of action of lauryl betaine was studied mainly using another phylogenetically close model fungal organism, Cryptococcus neoformans, because of a lack of available genetic manipulation and functional genomics tools for M. restricta. Our genome-wide reverse genetic screening method using the C. neoformans gene deletion mutant library showed that the mutants with mutations in genes for cell membrane synthesis and integrity, particularly ergosterol synthesis, are highly sensitive to lauryl betaine. Furthermore, transcriptome changes in both C. neoformans and M. restricta cells grown in the presence of lauryl betaine were analyzed and the results indicated that the compound mainly affected cell membrane synthesis, particularly ergosterol synthesis. Overall, our data demonstrated that lauryl betaine influences ergosterol synthesis in C. neoformans and that the compound exerts a similar mechanism of action on M. restricta.
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Affiliation(s)
- Eunsoo Do
- Department of Systems Biotechnology, Chung-Ang University, Anseong, Korea
| | - Hyun Gee Lee
- Safety Research Institute, Amorepacific R&D Center, Yongin, Korea
| | - Minji Park
- Department of Systems Biotechnology, Chung-Ang University, Anseong, Korea
| | | | - Dong Hyeun Kim
- Department of Systems Biotechnology, Chung-Ang University, Anseong, Korea
| | - Se-Ho Park
- Department of Systems Biotechnology, Chung-Ang University, Anseong, Korea
| | - Daekyung Eun
- Safety Research Institute, Amorepacific R&D Center, Yongin, Korea
| | - Taehun Park
- Safety Research Institute, Amorepacific R&D Center, Yongin, Korea
| | - Susun An
- Safety Research Institute, Amorepacific R&D Center, Yongin, Korea
| | - Won Hee Jung
- Department of Systems Biotechnology, Chung-Ang University, Anseong, Korea
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72
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Park M, Lee N, Kang H, Song W. Analytical performance evaluation of novel high-sensitivity troponin I assay and other cardiac markers on Atellica immunoassay analyzer. Clin Chim Acta 2019. [DOI: 10.1016/j.cca.2019.03.372] [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: 11/26/2022]
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73
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Roh HG, Kim EY, Kim IS, Lee HJ, Park JJ, Lee SB, Choi JW, Jeon YS, Park M, Kim SU, Kim HJ. A Novel Collateral Imaging Method Derived from Time-Resolved Dynamic Contrast-Enhanced MR Angiography in Acute Ischemic Stroke: A Pilot Study. AJNR Am J Neuroradiol 2019; 40:946-953. [PMID: 31097431 DOI: 10.3174/ajnr.a6068] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 04/12/2019] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Assessment of the collateral status has been emphasized for appropriate treatment decisions in patients with acute ischemic stroke. The purpose of this study was to introduce a multiphase MRA collateral imaging method (collateral map) derived from time-resolved dynamic contrast-enhanced MRA and to verify the value of the multiphase MRA collateral map in acute ischemic stroke by comparing it with the multiphase collateral imaging method (MRP collateral map) derived from dynamic susceptibility contrast-enhanced MR perfusion. MATERIALS AND METHODS From a prospectively maintained registry of acute ischemic stroke, MR imaging data of patients with acute ischemic stroke caused by steno-occlusive lesions of the unilateral ICA and/or the M1 segment of the MCA were analyzed. We generated collateral maps using dynamic signals from dynamic contrast-enhanced MRA and DSC-MRP using a Matlab-based in-house program and graded the collateral scores of the multiphase MRA collateral map and the MRP collateral map independently. Interobserver reliabilities and intermethod agreement between both collateral maps for collateral grading were tested. RESULTS Seventy-one paired multiphase MRA and MRP collateral maps from 67 patients were analyzed. The interobserver reliabilities for collateral grading using multiphase MRA or MRP collateral maps were excellent (weighted κ = 0.964 and 0.956, respectively). The agreement between both collateral maps was also excellent (weighted κ = 0.884; 95% confidence interval, 0.819-0.949). CONCLUSIONS We demonstrated that the dynamic signals of dynamic contrast-enhanced MRA could be used to generate multiphase collateral images and showed the possibility of the multiphase MRA collateral map as a useful collateral imaging method in acute ischemic stroke.
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Affiliation(s)
- H G Roh
- From the Departments of Radiology (H.G.R., J.W.C.)
| | - E Y Kim
- Department of Radiology (E.Y.K.), Gachon University Gil Medical Center, Incheon, Korea
| | - I S Kim
- Siemens Healthineers Ltd (I.S.K.), Seoul, Korea
| | - H J Lee
- Departments of Neurosurgery (H.J.L., S.U.K.)
| | | | | | - J W Choi
- From the Departments of Radiology (H.G.R., J.W.C.)
| | - Y S Jeon
- Neurosurgery (Y.S.J.), Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
| | - M Park
- Department of Radiology (M.P.), Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - S U Kim
- Departments of Neurosurgery (H.J.L., S.U.K.)
| | - H J Kim
- Radiology (H.J.K.), Daejeon St. Mary's Hospital, The Catholic University of Korea, Daejeon, Korea
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74
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Lee Y, Won C, Jung K, Nam H, Choi G, Park Y, Park M, Kim B. PAC‐14028 cream for atopic dermatitis. Br J Dermatol 2019. [DOI: 10.1111/bjd.17802] [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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75
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Lee Y, Won C, Jung K, Nam H, Choi G, Park Y, Park M, Kim B. 用于特应性皮炎的 PAC‐14028 乳膏. Br J Dermatol 2019. [DOI: 10.1111/bjd.17814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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76
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Yun W, Hong W, Son D, Liu HW, Kim SS, Park M, Kim IY, Kim DS, Song G, You S. Generation of Anterior Hindbrain-Specific, Glial-Restricted Progenitor-Like Cells from Human Pluripotent Stem Cells. Stem Cells Dev 2019; 28:633-648. [PMID: 30880587 DOI: 10.1089/scd.2019.0033] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 02/06/2023] Open
Abstract
Engraftment of oligodendrocyte progenitor cells (OPCs), which form myelinating oligodendrocytes, has the potential to treat demyelinating diseases such as multiple sclerosis. However, conventional strategies for generating oligodendrocytes have mainly focused on direct differentiation into forebrain- or spinal cord-restricted oligodendrocytes without establishing or amplifying stem/progenitor cells. Taking advantage of a recently established culture system, we generated expandable EN1- and GBX2-positive glial-restricted progenitor-like cells (GPLCs) near the anterior hindbrain. These cells expressed PDGFRα, CD9, S100β, and SOX10 and mostly differentiated into GFAP-positive astrocytes and MBP-positive oligodendrocytes. RNA-seq analysis revealed that the transcriptome of GPLCs was similar to that of O4-positive OPCs, but distinct from that of rosette-type neural stem cells. Notably, engrafted GPLCs not only differentiated into GFAP-positive astrocytes but also myelinated the brains of adult shiverer mice 8 weeks after transplantation. Our strategy for establishing anterior hindbrain-specific GPLCs with gliogenic potency will facilitate their use in the treatment of demyelinating diseases and studies of the molecular mechanisms underlying glial development in the hindbrain.
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Affiliation(s)
- Wonjin Yun
- 1 Laboratory of Cell Function Regulation, Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Republic of Korea.,2 Institute of Animal Molecular Biotechnology, Korea University, Seoul, Republic of Korea
| | - Wonjun Hong
- 1 Laboratory of Cell Function Regulation, Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Republic of Korea.,2 Institute of Animal Molecular Biotechnology, Korea University, Seoul, Republic of Korea
| | - Daryeon Son
- 1 Laboratory of Cell Function Regulation, Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Republic of Korea.,2 Institute of Animal Molecular Biotechnology, Korea University, Seoul, Republic of Korea
| | - Hui-Wen Liu
- 2 Institute of Animal Molecular Biotechnology, Korea University, Seoul, Republic of Korea.,3 Laboratory of Reprogramming & Differentiation, Department of Biotechnology, College of Life Science and Biotechnology, Korea University, Seoul, Republic of Korea
| | - Seung-Soo Kim
- 2 Institute of Animal Molecular Biotechnology, Korea University, Seoul, Republic of Korea
| | - Minji Park
- 1 Laboratory of Cell Function Regulation, Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Republic of Korea
| | - In Yong Kim
- 1 Laboratory of Cell Function Regulation, Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Republic of Korea.,4 Department of Neurosurgery, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Dae-Sung Kim
- 2 Institute of Animal Molecular Biotechnology, Korea University, Seoul, Republic of Korea.,3 Laboratory of Reprogramming & Differentiation, Department of Biotechnology, College of Life Science and Biotechnology, Korea University, Seoul, Republic of Korea
| | - Gwonhwa Song
- 5 Department of Biotechnology, Institute of Animal Molecular Biotechnology, Korea University, Seoul, Republic of Korea
| | - Seungkwon You
- 1 Laboratory of Cell Function Regulation, Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Republic of Korea.,2 Institute of Animal Molecular Biotechnology, Korea University, Seoul, Republic of Korea
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Suh J, Yu W, Song S, Lee J, Park M, Kim S, Song J, Jeong S, Paik H. KPC Klebsiella Identification Significantly Increases Risk of Bronchial Dehiscence in Lung Transplant Recipients. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Bareche Y, Buisseret L, Gruosso T, Girard E, Venet D, Dupont F, Desmedt C, Park M, Rothé F, Stagg J, Sotiriou C. Abstract P4-06-03: Unravelling triple-negative breast cancer tumor microenvironment heterogeneity using an integrative multiomic analysis. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p4-06-03] [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
Introduction: Triple negative breast cancer (TNBC) constitute 10-20% of all breast cancers and is associated with a worse prognosis and limited treatment options. Recent trials evaluating immune checkpoint blockade in TNBC demonstrated encouraging results for a subset of patients. TNBC is highly heterogeneous and its tumour microenvironment (TME) has been recognized as a critical determinant of its behavior and clinical outcome. Genome-wide gene expression profiling analyses have already improved our understanding of the complexity of this disease and have defined 6 different molecular subtypes namely Basal-like 1 (BL1), basal-like 2 (BL2), immunomodulatory (IM), mesenchymal (M), mesenchymal stem-like (MSL) and luminal androgen receptor (LAR), exhibiting distinct biological and clinical characteristic.
In this study, we aim to dissect the molecular diversity of the TME and more specifically to assess the immune landscape according to TNBC molecular subtypes.
Methods: A cohort of 485 TNBC patient with publicly available data (RNA-Seq and Illumina HT-12 v3) from the METABRIC and the TCGA consortia were used in the gene expression analysis. Gene signatures reflecting different features or cellular components (immune, stromal, angiogenesis, lymphangiogenesis, hypoxia, metabolism) of the TME were used to evaluate multiple biological processes known to contribute to tumorogenesis. A compendium of 17 immune specific gene signatures and T cell localisation classification were used to evaluate the immune composition and spatial pattern of immune infiltrates. All parameters were compared using a logistic regression model to evaluate their relative contribution according to each molecular subtype.
Results: Our analyses demonstrated that each molecular subtype exhibits different TME profiles, as well as specific immune composition and localisation. IM tumors were associated with the highest expression of immune-related gene signatures, enriched with adaptive immune cells and with a fully inflamed spatial pattern. MSL tumors were mostly associated with the expression of Lymphangiogenesis and Stromal TME signatures. They also exhibited some immune activity through the expression of immune gene signatures capturing innate immune and adaptive immunosuppressive cells. This subtype was mainly associated with margin restricted and to some extent with fully inflamed spatial pattern. BL1 tumors were associated with the expression of Metabolism TME signatures, along with fully inflamed and stroma restricted spatial pattern. To a lesser extent, this subtype was also associated with activated DC and CD4 Tem cells. LAR and M tumors exhibited an immune cold phenotype. They were associated with Stromal and Metabolism TME signatures, enriched in margin restricted spatial pattern and negatively associated with every immune cells.
Conclusions: Our results demonstrate for the first time the huge heterogeneity that characterizes the TME of TNBCs. Identification of specific TME profiles could help to design more rationale and appropriate synergistic therapeutic combinations targeting TME elements in this high-risk disease.
Citation Format: Bareche Y, Buisseret L, Gruosso T, Girard E, Venet D, Dupont F, Desmedt C, Park M, Rothé F, Stagg J, Sotiriou C. Unravelling triple-negative breast cancer tumor microenvironment heterogeneity using an integrative multiomic analysis [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P4-06-03.
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Affiliation(s)
- Y Bareche
- Breast Cancer Translational Research Laboratory, J. C. Heuson, Institut Jules Bordet, Université Libre de Bruxelles, Brussels, Belgium; Goodman Cancer Research Center, McGill University, Montreal, QC, Canada; Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, QC, Canada
| | - L Buisseret
- Breast Cancer Translational Research Laboratory, J. C. Heuson, Institut Jules Bordet, Université Libre de Bruxelles, Brussels, Belgium; Goodman Cancer Research Center, McGill University, Montreal, QC, Canada; Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, QC, Canada
| | - T Gruosso
- Breast Cancer Translational Research Laboratory, J. C. Heuson, Institut Jules Bordet, Université Libre de Bruxelles, Brussels, Belgium; Goodman Cancer Research Center, McGill University, Montreal, QC, Canada; Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, QC, Canada
| | - E Girard
- Breast Cancer Translational Research Laboratory, J. C. Heuson, Institut Jules Bordet, Université Libre de Bruxelles, Brussels, Belgium; Goodman Cancer Research Center, McGill University, Montreal, QC, Canada; Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, QC, Canada
| | - D Venet
- Breast Cancer Translational Research Laboratory, J. C. Heuson, Institut Jules Bordet, Université Libre de Bruxelles, Brussels, Belgium; Goodman Cancer Research Center, McGill University, Montreal, QC, Canada; Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, QC, Canada
| | - F Dupont
- Breast Cancer Translational Research Laboratory, J. C. Heuson, Institut Jules Bordet, Université Libre de Bruxelles, Brussels, Belgium; Goodman Cancer Research Center, McGill University, Montreal, QC, Canada; Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, QC, Canada
| | - C Desmedt
- Breast Cancer Translational Research Laboratory, J. C. Heuson, Institut Jules Bordet, Université Libre de Bruxelles, Brussels, Belgium; Goodman Cancer Research Center, McGill University, Montreal, QC, Canada; Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, QC, Canada
| | - M Park
- Breast Cancer Translational Research Laboratory, J. C. Heuson, Institut Jules Bordet, Université Libre de Bruxelles, Brussels, Belgium; Goodman Cancer Research Center, McGill University, Montreal, QC, Canada; Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, QC, Canada
| | - F Rothé
- Breast Cancer Translational Research Laboratory, J. C. Heuson, Institut Jules Bordet, Université Libre de Bruxelles, Brussels, Belgium; Goodman Cancer Research Center, McGill University, Montreal, QC, Canada; Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, QC, Canada
| | - J Stagg
- Breast Cancer Translational Research Laboratory, J. C. Heuson, Institut Jules Bordet, Université Libre de Bruxelles, Brussels, Belgium; Goodman Cancer Research Center, McGill University, Montreal, QC, Canada; Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, QC, Canada
| | - C Sotiriou
- Breast Cancer Translational Research Laboratory, J. C. Heuson, Institut Jules Bordet, Université Libre de Bruxelles, Brussels, Belgium; Goodman Cancer Research Center, McGill University, Montreal, QC, Canada; Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, QC, Canada
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Lee YW, Won CH, Jung K, Nam HJ, Choi G, Park YH, Park M, Kim B. Efficacy and safety of PAC-14028 cream - a novel, topical, nonsteroidal, selective TRPV1 antagonist in patients with mild-to-moderate atopic dermatitis: a phase IIb randomized trial. Br J Dermatol 2019; 180:1030-1038. [PMID: 30623408 PMCID: PMC6850419 DOI: 10.1111/bjd.17455] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/26/2018] [Indexed: 12/21/2022]
Abstract
Background Transient receptor potential vanilloid subfamily, member 1 (TRPV1) may play an important role in pruritus and inflammation induction in atopic dermatitis (AD). The treatment effect of TRPV1 antagonist via topical application in patients with AD remains unknown. Objectives To assess the clinical efficacy and safety of PAC‐14028, a TRPV1 antagonist, via topical application in patients with AD. Methods In this 8‐week, phase IIb, randomized, double‐blind, multicentre, vehicle‐controlled study, patients with mild‐to‐moderate AD were randomized to receive PAC‐14028 cream 0·1%, 0·3%, 1·0% or vehicle cream twice daily. The primary efficacy end point was the Investigator's Global Assessment (IGA) success rate defined as the percentage of patients with an IGA score of 0 or 1 at week 8. The secondary efficacy end points included the severity Scoring of Atopic Dermatitis (SCORAD) index and Eczema Area and Severity Index (EASI) 75/90. Results A total of 194 patients were enrolled. IGA success rates at week 8 were 14·58% for vehicle cream, 42·55% for PAC‐14028 cream 0·1% (P = 0·0025 vs. vehicle), 38·30% for PAC‐14028 cream 0·3% (P = 0·0087 vs. vehicle) and 57·45% for PAC‐14028 cream 1·0% (P < 0·001 vs. vehicle). In particular, statistically significant differences were found between the vehicle and treatment groups in the IGA success rates with two‐grade improvement. The SCORAD index, EASI 75/90, sleep disturbance score and pruritus visual analogue scale showed a trend towards improvement. No significant safety issues were reported. Conclusions PAC‐14028 cream may be an effective and safe treatment modality for the treatment of patients with mild‐to‐moderate AD. What is already known about this topic? Atopic dermatitis (AD) is one of the most common inflammatory skin diseases characterized by pruritic erythematous skin lesions and barrier dysfunction. Transient receptor potential vanilloid subfamily, member 1 (TRPV1) antagonists suppress the release of pruritic and proinflammatory mediators. The preclinical results demonstrate the feasibility of TRPV1 as a potential therapeutic target for the treatment of AD.
What does this study add? TRPV1 regulates inflammation and pruritus in patients with AD. PAC‐14028 cream, a novel TRPV1 antagonist, was superior to vehicle in improving clinical symptoms and signs with a favourable safety profile in adults with mild‐to‐moderate AD. TRPV1 antagonism may play a role as a promising nonsteroidal topical treatment target for AD with a new mechanism of action.
Linked Editorial:https://doi.org/10.1111/bjd.17777. https://doi.org/10.1111/bjd.17802 available online https://www.bjdonline.com/article/
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Affiliation(s)
- Y W Lee
- Department of Dermatology, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - C-H Won
- Department of Dermatology, Ulsan University College of Medicine, Asan Medical Center, Seoul, Republic of Korea
| | - K Jung
- Vital Beautie Research Institute, AmorePacific Corporation R&D Center, Yongin, Republic of Korea
| | - H-J Nam
- Vital Beautie Research Institute, AmorePacific Corporation R&D Center, Yongin, Republic of Korea
| | - G Choi
- Vital Beautie Research Institute, AmorePacific Corporation R&D Center, Yongin, Republic of Korea
| | - Y-H Park
- Vital Beautie Research Institute, AmorePacific Corporation R&D Center, Yongin, Republic of Korea
| | - M Park
- Vital Beautie Research Institute, AmorePacific Corporation R&D Center, Yongin, Republic of Korea
| | - B Kim
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Republic of Korea
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Lee SR, Küfner M, Park M, Jung WH, Choi SU, Beemelmanns C, Kim KH. Beauvetetraones A–C, phomaligadione-derived polyketide dimers from the entomopathogenic fungus, Beauveria bassiana. Org Chem Front 2019. [DOI: 10.1039/c8qo01009a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [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
Beauvetetraones A–C, phomaligadione-derived polyketide dimers, were isolated from the entomopathogenic fungus Beauveria bassiana using LC/MS-guided isolation and their putative biosynthetic pathway is proposed.
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Affiliation(s)
- Seoung Rak Lee
- School of Pharmacy
- Sungkyunkwan University
- Suwon 16419
- Republic of Korea
| | - Michelle Küfner
- Leibniz Institute for Natural Product Research and Infection Biology – Hans-Knöll-Institute
- 07745 Jena
- Germany
| | - Minji Park
- Department of Systems Biotechnology
- Chung-Ang University
- Anseong
- Republic of Korea
| | - Won Hee Jung
- Department of Systems Biotechnology
- Chung-Ang University
- Anseong
- Republic of Korea
| | - Sang Un Choi
- Korea Research Institute of Chemical Technology
- Deajeon 305-600
- Republic of Korea
| | - Christine Beemelmanns
- Leibniz Institute for Natural Product Research and Infection Biology – Hans-Knöll-Institute
- 07745 Jena
- Germany
| | - Ki Hyun Kim
- School of Pharmacy
- Sungkyunkwan University
- Suwon 16419
- Republic of Korea
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Hur MS, Park M, Jung WH, Lee YW. Evaluation of drug susceptibility test for Efinaconazole compared with conventional antifungal agents. Mycoses 2018; 62:291-297. [PMID: 30427072 DOI: 10.1111/myc.12870] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 10/17/2018] [Accepted: 10/25/2018] [Indexed: 12/20/2022]
Abstract
BACKGROUND Superficial fungal infections are one of the most common and burdensome skin problems affecting quality of life in patients. Various conventional antifungal agents have been used to treat fungal infections; however, various problems have been reported including drug interaction, drug resistance and low effectiveness. Efinaconazole is a novel antifungal agent, which has proven to be particularly effective against onychomycosis compared with conventional antifungal agents. However, the antifungal efficacy of Efinaconazole for specific strains has not been analysed. OBJECTIVE We conducted an in-vitro study to measure the antifungal activity of Efinaconazole against strains of Trichophyton rubrum, Trichophyton mentagrophytes and Candida albicans compared with widely-used antifungal drugs. METHODS We obtained strains of T. rubrum, T. mentagrophytes and C. albicans isolated from patients with onychomycosis and tinea pedis. The minimal inhibitory concentration (MIC) for various strains of fungal species was evaluated for the antifungal susceptibility test. RESULTS Efinaconazole showed a low MIC against almost strains of dermatophytes and C albicans and also presented low resistance, indicating high potency of efinaconazole for treatment of superficial fungal infections. CONCLUSION Efinaconazole could be a comparable alternative to replace existing conventional agents.
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Affiliation(s)
- Min Seok Hur
- Department of Dermatology, Konkuk University School of Medicine, Seoul, Korea
| | - Minji Park
- Department of Systems Biotechnology, Chung-Ang University, Anseong, Korea
| | - Won Hee Jung
- Department of Systems Biotechnology, Chung-Ang University, Anseong, Korea
| | - Yang Won Lee
- Department of Dermatology, Konkuk University School of Medicine, Seoul, Korea.,Research Institute of Medical Science, Konkuk University, Seoul, Korea
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Park M, Lee S, Park B, Lee S, Choy Y, Choi J, Lee K, Dang C, Chang H, Choi Y, Kim S. PSIV-15 Interaction between E+ and Abr loci is associated with brindle coat color in Korean Hanwoo cattle. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- M Park
- National Institute of Animal Science, RDA,Cheonan-si, South Korea
| | - S Lee
- Chungnam National University,Daejeon, South Korea
| | - B Park
- NIAS, RDA,Jeollabuk-do, South Korea
| | - S Lee
- NIAS, RDA,Jeollabuk-do, South Korea
| | - Y Choy
- NIAS, RDA,Jeollabuk-do, South Korea
| | - J Choi
- NIAS, RDA,Jeollabuk-do, South Korea
| | - K Lee
- NIAS, RDA,Jeollabuk-do, South Korea
| | - C Dang
- NIAS, RDA,Jeollabuk-do, South Korea
| | - H Chang
- NIAS, RDA,Jeollabuk-do, South Korea
| | - Y Choi
- NIAS, RDA,Jeollabuk-do, South Korea
| | - S Kim
- NIAS, RDA,Jeollabuk-do, South Korea
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83
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Choi S, Park M, Kwak M, Lee J, Whang K. 157 ValiMP, a mixture of phytogenic compounds with manganese, reduces abdominal fat in broilers. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.637] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- S Choi
- Korea University,Seoul, South Korea
| | - M Park
- Korea University,Seoul, South Korea
| | - M Kwak
- Department of Biotechnology, Graduate School, Korea University,Seoul, Korea, Seoul, South Korea
| | - J Lee
- Korea University,Seoul, South Korea
| | - K Whang
- Department of Biotechnology, Graduate School, Korea University,Seoul, Korea, Seoul, South Korea
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Moon WJ, Park M, Hwang M, Kim JK. Functional MRI as an Objective Measure of Olfaction Deficit in Patients with Traumatic Anosmia. AJNR Am J Neuroradiol 2018; 39:2320-2325. [PMID: 30409849 DOI: 10.3174/ajnr.a5873] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 09/24/2018] [Indexed: 12/19/2022]
Abstract
BACKGROUND AND PURPOSE While posttraumatic anosmia is not uncommon, the olfactory function evaluation has strongly relied on subjective responses given by patients. We aimed to examine the utility of fMRI as an objective tool for diagnosing traumatic anosmia. MATERIALS AND METHODS Sixteen patients (11 men and 5 women; mean age, 42.2 ± 10.4 years) with clinically diagnosed traumatic anosmia and 19 healthy control subjects (11 men and 8 women; mean age, 29.3 ± 8.5 years) underwent fMRI during olfactory stimulation with citral (a pleasant odor) or β-mercaptoethanol (an unpleasant odor). All patients were subjected to a clinical olfactory functional assessment and nasal endoscopic exploration. Two-sample t tests were conducted with age as a covariate to examine group differences in brain activation responses to olfactory stimulation (false discovery rate-corrected P < .05). RESULTS Compared with healthy control subjects, patients with traumatic anosmia had reduced activation in the bilateral primary and secondary olfactory cortices and the limbic system in response to β-mercaptoethanol stimulation, whereas reduced activation was observed only in the left frontal subgyral region in response to citral stimulation. CONCLUSIONS Brain activation was decreased in the bilateral primary and secondary olfactory cortices as well as the limbic system in response to olfactory stimulation in patients with traumatic anosmia compared with healthy control subjects. These preliminary results may shed light on the potential of fMRI for the diagnosis of traumatic anosmia.
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Affiliation(s)
- W-J Moon
- Department of Radiology (W.-J.M., M.P.), Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
| | - M Park
- Department of Radiology (W.-J.M., M.P.), Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
| | - M Hwang
- GE Healthcare (M.H.), Seoul, Korea
| | - J K Kim
- Department of Otorhinolaryngology-Head and Neck Surgery (J.K.K.), Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
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85
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Kim M, Cho YJ, Park M, Choi Y, Hwang SY, Jung WH. Genomic Tandem Quadruplication is Associated with Ketoconazole Resistance in Malassezia pachydermatis. J Microbiol Biotechnol 2018; 28:1937-1945. [DOI: 10.4014/jmb.1810.10019] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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86
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Park W, Srikanth K, Lim D, Park M, Hur T, Kemp S, Dessie T, Kim MS, Lee SR, te Pas MFW, Kim JM, Park JE. Comparative transcriptome analysis of Ethiopian indigenous chickens from low and high altitudes under heat stress condition reveals differential immune response. Anim Genet 2018; 50:42-53. [DOI: 10.1111/age.12740] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/16/2018] [Indexed: 01/22/2023]
Affiliation(s)
- W. Park
- Animal Genomics and Bioinformatics Division; National Institute of Animal Science, RDA; Wanju 55365 Korea
| | - K. Srikanth
- Animal Genomics and Bioinformatics Division; National Institute of Animal Science, RDA; Wanju 55365 Korea
| | - D. Lim
- Animal Genomics and Bioinformatics Division; National Institute of Animal Science, RDA; Wanju 55365 Korea
| | - M. Park
- Animal Breeding and Genomics Division; National Institute of Animal Science, RDA; Wanju 55365 Korea
| | - T. Hur
- Animal Genomics and Bioinformatics Division; National Institute of Animal Science, RDA; Wanju 55365 Korea
| | - S. Kemp
- Animal Biosciences; International Livestock Research Institute (ILRI); P.O. Box 30709 Nairobi 00100 Kenya
| | - T. Dessie
- Animal Biosciences; International Livestock Research Institute (ILRI); P.O. Box 5689 Addis Ababa Ethiopia
| | - M. S. Kim
- Department of Animal Science; College of Agriculture and Life Sciences; Chonnam National University; Republic of Korea Gwangju 61186 Korea
| | - S.-R. Lee
- Department of Agro-biotechnology Convergence; Jeonju University; Republic of Korea 55069 Jeonju Korea
| | - M. F. W. te Pas
- Animal Breeding and Genomics; Wageningen UR Livestock Research; 6700AH Wageningen The Netherlands
| | - J.-M. Kim
- Department of Animal Science and Technology; Chung-Ang University; Anseong Gyeonggi-do 17546 Korea
| | - J.-E. Park
- Animal Genomics and Bioinformatics Division; National Institute of Animal Science, RDA; Wanju 55365 Korea
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Sprenger T, Yamout B, Comi G, Lebrun-frenay C, Park M, Chinchilla D, Lincoln J, Kappos L, Radue E, Lublin A, Cavalier S, Thangavelu K, Wuerfel J. Investigating the Effect of Teriflunomide on Diffuse Brain Tissue Damage in the Phase 3 TEMSO Study. Mult Scler Relat Disord 2018. [DOI: 10.1016/j.msard.2018.10.088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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88
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Alpern M, O'Brien E, Campbell R, Park M, Hagan J. TREE NUT ALLERGY MASQUERADING AS FOREIGN BODY ASPIRATION: PISTACHIO ALLERGY PRESENTING WITH ISOLATED SUPRAGLOTTIC EDEMA. Ann Allergy Asthma Immunol 2018. [DOI: 10.1016/j.anai.2018.09.391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Mao SPH, Park M, Cabrera RM, Christin JR, Karagiannis GS, Oktay MH, Zaiss DMW, Abrams SI, Guo W, Condeelis JS, Kenny PA, Segall JE. Loss of amphiregulin reduces myoepithelial cell coverage of mammary ducts and alters breast tumor growth. Breast Cancer Res 2018; 20:131. [PMID: 30367629 PMCID: PMC6203982 DOI: 10.1186/s13058-018-1057-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 10/02/2018] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Amphiregulin (AREG), a ligand of the epidermal growth factor receptor, is not only essential for proper mammary ductal development, but also associated with breast cancer proliferation and growth. In the absence of AREG, mammary ductal growth is stunted and fails to expand. Furthermore, suppression of AREG expression in estrogen receptor-positive breast tumor cells inhibits in-vitro and in-vivo growth. METHODS We crossed AREG-null (AREG-/-) mice with the murine luminal B breast cancer model, MMTV-PyMT (PyMT), to generate spontaneous breast tumors that lack AREG (AREG-/- PyMT). We evaluated tumor growth, cytokeratin-8 (K8)-positive luminal cells, cytokeratin-14 (K14)-positive myoepithelial cells, and expression of AREG, Ki67, and PyMT. Primary myoepithelial cells from nontumor-bearing AREG+/+ mice underwent fluorescence-activated cell sorting and were adapted to culture for in-vitro coculture studies with AT-3 cells, a cell line derived from C57Bl/6 PyMT mammary tumors. RESULTS Intriguingly, PyMT-induced lesions progress more rapidly in AREG-/- mice than in AREG+/+ mice. Quantification of K8+ luminal and K14+ myoepithelial cells in non-PyMT AREG-/- mammary glands showed fewer K14+ cells and a thinner myoepithelial layer. Study of AT-3 cells indicated that coculture with myoepithelial cells or exposure to AREG, epidermal growth factor, or basic fibroblast growth factor can suppress PyMT expression. Late-stage AREG-/- PyMT tumors are significantly less solid in structure, with more areas of papillary and cystic growth. Papillary areas appear to be both less proliferative and less necrotic. In The Cancer Genome Atlas database, luminal-B invasive papillary carcinomas have lower AREG expression than luminal B invasive ductal carcinomas. CONCLUSIONS Our study has revealed a previously unknown role of AREG in myoepithelial cell development and PyMT expression. AREG expression is essential for proper myoepithelial coverage of mammary ducts. Both AREG and myoepithelial cells can suppress PyMT expression. We find that lower AREG expression is associated with invasive papillary breast cancer in both the MMTV-PyMT model and human breast cancer.
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MESH Headings
- Amphiregulin/genetics
- Amphiregulin/metabolism
- Animals
- Antigens, Polyomavirus Transforming/genetics
- Antigens, Polyomavirus Transforming/metabolism
- Cell Line, Tumor
- Cell Proliferation
- Epithelial Cells/pathology
- Epithelial Cells/virology
- Female
- Humans
- Mammary Glands, Animal/cytology
- Mammary Glands, Animal/pathology
- Mammary Neoplasms, Experimental/genetics
- Mammary Neoplasms, Experimental/pathology
- Mammary Neoplasms, Experimental/virology
- Mammary Tumor Virus, Mouse/genetics
- Mammary Tumor Virus, Mouse/pathogenicity
- Mice
- Mice, Inbred C57BL
- Mice, Transgenic
- Neoplasm Invasiveness/pathology
- Polyomavirus/genetics
- Polyomavirus/immunology
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Affiliation(s)
- Serena P. H. Mao
- Department of Anatomy and Structural Biology, Albert Einstein College of Medicine, 1301 Morris Park Avenue, Bronx, NY 10461 USA
| | - Minji Park
- Department of Anatomy and Structural Biology, Albert Einstein College of Medicine, 1301 Morris Park Avenue, Bronx, NY 10461 USA
| | - Ramon M. Cabrera
- Department of Anatomy and Structural Biology, Albert Einstein College of Medicine, 1301 Morris Park Avenue, Bronx, NY 10461 USA
| | - John R. Christin
- Department of Cell Biology, Albert Einstein College of Medicine, Bronx, NY 10461 USA
| | - George S. Karagiannis
- Department of Anatomy and Structural Biology, Albert Einstein College of Medicine, 1301 Morris Park Avenue, Bronx, NY 10461 USA
- Gruss Lipper Biophotonics Center, Albert Einstein College of Medicine, Bronx, NY 10461 USA
- Integrated Imaging Program, Albert Einstein College of Medicine, Bronx, NY 10461 USA
| | - Maja H. Oktay
- Department of Anatomy and Structural Biology, Albert Einstein College of Medicine, 1301 Morris Park Avenue, Bronx, NY 10461 USA
- Gruss Lipper Biophotonics Center, Albert Einstein College of Medicine, Bronx, NY 10461 USA
- Integrated Imaging Program, Albert Einstein College of Medicine, Bronx, NY 10461 USA
| | - Dietmar M. W. Zaiss
- Institute of Immunology and Infection Research, University of Edinburgh, Edinburgh, UK
| | - Scott I. Abrams
- Department of Immunology, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263 USA
| | - Wenjun Guo
- Department of Cell Biology, Albert Einstein College of Medicine, Bronx, NY 10461 USA
| | - John S. Condeelis
- Department of Anatomy and Structural Biology, Albert Einstein College of Medicine, 1301 Morris Park Avenue, Bronx, NY 10461 USA
- Gruss Lipper Biophotonics Center, Albert Einstein College of Medicine, Bronx, NY 10461 USA
- Integrated Imaging Program, Albert Einstein College of Medicine, Bronx, NY 10461 USA
| | - Paraic A. Kenny
- Kabara Cancer Research Institute, Gundersen Medical Foundation, La Crosse, WI 54601 USA
| | - Jeffrey E. Segall
- Department of Anatomy and Structural Biology, Albert Einstein College of Medicine, 1301 Morris Park Avenue, Bronx, NY 10461 USA
- Gruss Lipper Biophotonics Center, Albert Einstein College of Medicine, Bronx, NY 10461 USA
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90
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Park M, Park J, Kang J, Han YS, Jeong HY. Removal of hexavalent chromium using mackinawite (FeS)-coated sand. J Hazard Mater 2018; 360:17-23. [PMID: 30075379 DOI: 10.1016/j.jhazmat.2018.07.086] [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] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 07/21/2018] [Accepted: 07/23/2018] [Indexed: 06/08/2023]
Abstract
This study investigates the feasibility of mackinawite (FeS)-coated sand in permeable reactive barrier applications to treat Cr(VI)-contaminated groundwater under anoxic conditions. For this, Cr(VI) sorption experiments were conducted using both coated and uncoated sands. Solution-phase Cr speciation and Cr K-edge X-ray absorption near-edge structure (XANES) analysis indicated the complete reduction of Cr(VI) to Cr(III) by coated sand. At pH 4.7, substantial amounts of Cr(III) remained in solution due to its unfavorable cationic adsorption at acidic pH. At pH 7.1 and 9.8, it was quantitatively immobilized by forming Cr(III)-bearing precipitates. In contrast, uncoated sand showed the decreasing Cr(VI) sorption with pH. In uncoated sand, magnetite impurities would mediate the partial reduction of Cr(VI). Thus, the pH-dependent sorption by uncoated sand was due to both unfavorable anionic Cr(VI) adsorption and its lesser reduction to Cr(III) with pH. Compared to uncoated sand, coated sand showed significantly increased Cr(VI) sorption at neutral to basic pH. By Fe K-edge XANES analysis, FeS was mainly responsible for Cr(VI) reduction by coated sand, with a green rust-like phase being the major Fe product. Since Fe(OH)3 is not thermodynamically stable under the redox conditions favoring formation of green rust, Fe(III)-substituted Cr(OH)3 likely represents a Cr(III)-bearing phase.
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Affiliation(s)
- Minji Park
- Department of Geological Sciences, Pusan National University, Busan, 46241, South Korea.
| | - Jiwon Park
- Department of Geological Sciences, Pusan National University, Busan, 46241, South Korea.
| | - Jungchun Kang
- Korea Chemical management Association, Seocho-daero 88, Seocho-gu, Seoul, 06673, South Korea.
| | - Young-Soo Han
- Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources, Deajeon, 34132, South Korea.
| | - Hoon Young Jeong
- Department of Geological Sciences, Pusan National University, Busan, 46241, South Korea.
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91
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Klauschen F, Müller KR, Binder A, Bockmayr M, Hägele M, Seegerer P, Wienert S, Pruneri G, de Maria S, Badve S, Michiels S, Nielsen T, Adams S, Savas P, Symmans F, Willis S, Gruosso T, Park M, Haibe-Kains B, Gallas B, Thompson A, Cree I, Sotiriou C, Solinas C, Preusser M, Hewitt S, Rimm D, Viale G, Loi S, Loibl S, Salgado R, Denkert C. Scoring of tumor-infiltrating lymphocytes: From visual estimation to machine learning. Semin Cancer Biol 2018; 52:151-157. [DOI: 10.1016/j.semcancer.2018.07.001] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 07/01/2018] [Accepted: 07/02/2018] [Indexed: 12/12/2022]
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92
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Martinez Ramirez C, Kuasne H, Park M, Zuo D, Kleinman C, Yang Y, Blanchet-Cohen A, Savage P, Ragoussis J. Single-cell RNA sequencing of triple negative breast cancer patient-derived xenograft reveals distinct cellular populations spatially mapped to histological sections. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy304.002] [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: 11/13/2022] Open
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93
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Yoon S, Yoon J, Shin D, Park M, Eum J, Song H, Lee J, Lee D, Lee W, Lyu S. Recovery of ovarian function by human embryonic stem cells derived mesenchymal stem cells in cisplatin induced premature ovarian failure in mouse. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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94
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Park M, Kim J, Hwang J, Lyu S, Song H. Perivascular stem cells from human umbilical cords ameliorate fibrotic uterine damage to improve poor pregnancy outcomes in a murine model of asherman's syndrome. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.1059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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95
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Park M, Cho YJ, Lee YW, Jung WH. Understanding the Mechanism of Action of the Anti-Dandruff Agent Zinc Pyrithione against Malassezia restricta. Sci Rep 2018; 8:12086. [PMID: 30108245 PMCID: PMC6092343 DOI: 10.1038/s41598-018-30588-2] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 08/01/2018] [Indexed: 01/05/2023] Open
Abstract
Dandruff is known to be associated with Malassezia restricta. Zinc pyrithione (ZPT) has been used as an ingredient in anti-dandruff treatments. The mechanism of ZPT has been investigated in several studies; however, a non-pathogenic model yeast, such as Saccharomyces cerevisiae was most often used. The aim of the present study was to understand how ZPT inhibits the growth of M. restricta. We analyzed the cellular metal content and transcriptome profile of ZPT-treated M. restricta cells and found that ZPT treatment dramatically increased cellular zinc levels, along with a small increase in cellular copper levels. Moreover, our transcriptome analysis showed that ZPT inhibits Fe-S cluster synthesis in M. restricta. We also observed that ZPT treatment significantly reduced the expression of lipases, whose activities contribute to the survival and virulence of M. restricta on human skin. Therefore, the results of our study suggest that at least three inhibitory mechanisms are associated with the action of ZPT against M. restricta: (i) an increase in cellular zinc levels, (ii) inhibition of mitochondrial function, and (iii) a decrease in lipase expression.
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Affiliation(s)
- Minji Park
- Department of Systems Biotechnology, Chung-Ang University, Anseong, 17546, Korea
| | - Yong-Joon Cho
- Korea Polar Research Institute, Incheon, 21990, Korea
| | - Yang Won Lee
- Department of Dermatology, School of Medicine, Konkuk University, Seoul, 05029, Korea. .,Research Institute of Medicine, Konkuk University, Seoul, 05029, Korea.
| | - Won Hee Jung
- Department of Systems Biotechnology, Chung-Ang University, Anseong, 17546, Korea.
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96
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Park M, Nishimura T, Naudi A, Young T, Pamplona R, Hartley R, Murphy M, Krieg T. MitoGamide ameliorates diabetic cardiomyopathy by scavenging mitochondrial dicarbonyls in type 1 diabetic Akita mice. J Mol Cell Cardiol 2018. [DOI: 10.1016/j.yjmcc.2018.05.086] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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97
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Mao S, Park M, Cabrera R, Christin J, Karagiannis G, Guo W, Condeelis J, Segall J. Abstract 5114: The role of amphiregulin in mammary gland development and breast cancer. Cancer Res 2018. [DOI: 10.1158/1538-7445.am2018-5114] [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
Breast cancer is the most prevalent cancer in women worldwide and afflicts more than 3.1 million women in the US alone. The epidermal growth factor receptor (EGFR) is frequently overexpressed in breast cancer and is associated with poor clinical outcome. Several therapies involving anti-EGFR agents have been developed to target breast cancer. However, clinical trials have shown mixed outcomes with these therapies. Amphiregulin (AREG), a ligand of the epidermal growth factor receptor (EGFR), is enriched in invasive breast cancer, particularly ERα-positive breast tumors. In normal physiology, AREG mediates estrogen-induced ductal morphogenesis during mammary gland development. In the absence of AREG, the ductal tree fails to elongate and remains rudimentary throughout adulthood. The structure of a healthy mammary duct consists of luminal cells surrounded by a layer of myoepithelial cells. Studies of mammary gland transplantations suggest that a marker of myoepithelial cells (keratin 14, K14) is only expressed if AREG is present in the mammary epithelium. Multiple studies have provided evidence that myoepithelial cells are natural tumor suppressors. During tumor growth, the disappearance of myoepithelial cells indicates progression to invasive carcinoma. Therefore we hypothesize that AREG plays an important role in maintenance of the maintenance of myoepithelial cells in the mammary epithelium and loss of AREG promotes tumor progression as a result of an early loss of myoepithelial cells. In the mammary glands of AREG WT and AREG KO mice without the PyMT transgene, we have found that mammary ducts in AREG KO mice have significantly fewer myoepithelial cells. Immunofluorescent staining of K14 has revealed a thinner and discontinuous myoepithelial layer in the AREG KO mice. To investigate the role of AREG in breast cancer development and progression, we have utilized a spontaneous mammary tumor mouse model where oncogenesis is driven by expression of the polyoma middle T oncoprotein (PyMT) through the mouse mammary tumor virus (MMTV) promoter. We have crossed AREG knockout mice with the MMTV-PyMT mice to generate AREG KO mice that spontaneously form mammary tumors (AREG KO PyMT). The absence of AREG in both the mammary epithelial and stromal compartments accelerates tumor growth. By 12 weeks of age, tumors of AREG KO PyMT mice are significantly larger than that of AREG WT PyMT mice. AREG KO tumors are histologically less necrotic, apoptotic, and progressed than AREG WT tumors. Furthermore, AREG KO tumors show higher staining of PyMT by immunofluorescence. Together, these results suggest that loss of AREG stimulates tumor initiation but inhibits progression due to fewer myoepithelial cells beginning during development.
Citation Format: Serena Mao, Minji Park, Ramon Cabrera, John Christin, George Karagiannis, Wenjun Guo, John Condeelis, Jeffrey Segall. The role of amphiregulin in mammary gland development and breast cancer [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 5114.
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Affiliation(s)
- Serena Mao
- 1Albert Einstein College of Medicine, Bronx, NY
| | | | | | | | | | - Wenjun Guo
- 1Albert Einstein College of Medicine, Bronx, NY
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98
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Shin J, Hwang J, Park M, Lim J, Yang M, Lee J. Trends in the incidence of asthma in adults: A Korean population-based study. Rev Epidemiol Sante Publique 2018. [DOI: 10.1016/j.respe.2018.05.420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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99
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Cho I, Kang H, Jo J, Lee H, Chung M, Park J, Park S, Song S, Park M, An C, Jung S, Bang S. FOLFIRINOX versus gemcitabine plus nab-paclitaxel for treatment of metastatic pancreatic cancer: a single-center cohort study. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy151.160] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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100
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Choi J, Kim J, Han S, Park M, Park S. Clinical significance of microsatellite instability in gender-dependent patients with right-sided colorectal cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy151.230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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