1
|
Kim Y, Kim YG, Park JW, Kim BW, Shin Y, Kong SH, Kim JH, Lee YK, Kim SW, Shin CS. A CT-based Deep Learning Model for Predicting Subsequent Fracture Risk in Patients with Hip Fracture. Radiology 2024; 310:e230614. [PMID: 38289213 DOI: 10.1148/radiol.230614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
Background Patients have the highest risk of subsequent fractures in the first few years after an initial fracture, yet models to predict short-term subsequent risk have not been developed. Purpose To develop and validate a deep learning prediction model for subsequent fracture risk using digitally reconstructed radiographs from hip CT in patients with recent hip fractures. Materials and Methods This retrospective study included adult patients who underwent three-dimensional hip CT due to a fracture from January 2004 to December 2020. Two-dimensional frontal, lateral, and axial digitally reconstructed radiographs were generated and assembled to construct an ensemble model. DenseNet modules were used to calculate risk probability based on extracted image features and fracture-free probability plots were output. Model performance was assessed using the C index and area under the receiver operating characteristic curve (AUC) and compared with other models using the paired t test. Results The training and validation set included 1012 patients (mean age, 74.5 years ± 13.3 [SD]; 706 female, 113 subsequent fracture) and the test set included 468 patients (mean age, 75.9 years ± 14.0; 335 female, 22 subsequent fractures). In the test set, the ensemble model had a higher C index (0.73) for predicting subsequent fractures than that of other image-based models (C index range, 0.59-0.70 for five of six models; P value range, < .001 to < .05). The ensemble model achieved AUCs of 0.74, 0.74, and 0.73 at the 2-, 3-, and 5-year follow-ups, respectively; higher than that of most other image-based models at 2 years (AUC range, 0.57-0.71 for five of six models; P value range, < .001 to < .05) and 3 years (AUC range, 0.55-0.72 for four of six models; P value range, < .001 to < .05). Moreover, the AUCs achieved by the ensemble model were higher than that of a clinical model that included known risk factors (2-, 3-, and 5-year AUCs of 0.58, 0.64, and 0.70, respectively; P < .001 for all). Conclusion In patients with recent hip fractures, the ensemble deep learning model using digital reconstructed radiographs from hip CT showed good performance for predicting subsequent fractures in the short term. © RSNA, 2024 Supplemental material is available for this article. See also the editorial by Li and Jaremko in this issue.
Collapse
Affiliation(s)
- Yisak Kim
- From the Interdisciplinary Program in Bioengineering (Y.K., Y.S.) and Integrated Major in Innovative Medical Science (Y.K.), Seoul National University Graduate School, Seoul, Republic of Korea; Department of Radiology (Y.K.), Transdisciplinary Department of Medicine & Advanced Technology (Y.G.K., B.W.K., Y.S.), and Department of Internal Medicine (J.H.K., C.S.S.), Seoul National University Hospital, Seoul, Republic of Korea; Departments of Orthopaedic Surgery (J.W.P., Y.K.L.) and Internal Medicine (S.H.K.), Seoul National University Bundang Hospital, 82 Gumi-ro 173 Beon-gil, Bundang gu, Seongnam, Republic of Korea; Departments of Medicine (Y.G.K.) and Internal Medicine (S.H.K., J.H.K., S.W.K., C.S.S.), Seoul National University College of Medicine, Seoul, Republic of Korea; and Department of Internal Medicine, Seoul National University Boramae Hospital, Seoul, Republic of Korea (S.W.K.)
| | - Young-Gon Kim
- From the Interdisciplinary Program in Bioengineering (Y.K., Y.S.) and Integrated Major in Innovative Medical Science (Y.K.), Seoul National University Graduate School, Seoul, Republic of Korea; Department of Radiology (Y.K.), Transdisciplinary Department of Medicine & Advanced Technology (Y.G.K., B.W.K., Y.S.), and Department of Internal Medicine (J.H.K., C.S.S.), Seoul National University Hospital, Seoul, Republic of Korea; Departments of Orthopaedic Surgery (J.W.P., Y.K.L.) and Internal Medicine (S.H.K.), Seoul National University Bundang Hospital, 82 Gumi-ro 173 Beon-gil, Bundang gu, Seongnam, Republic of Korea; Departments of Medicine (Y.G.K.) and Internal Medicine (S.H.K., J.H.K., S.W.K., C.S.S.), Seoul National University College of Medicine, Seoul, Republic of Korea; and Department of Internal Medicine, Seoul National University Boramae Hospital, Seoul, Republic of Korea (S.W.K.)
| | - Jung-Wee Park
- From the Interdisciplinary Program in Bioengineering (Y.K., Y.S.) and Integrated Major in Innovative Medical Science (Y.K.), Seoul National University Graduate School, Seoul, Republic of Korea; Department of Radiology (Y.K.), Transdisciplinary Department of Medicine & Advanced Technology (Y.G.K., B.W.K., Y.S.), and Department of Internal Medicine (J.H.K., C.S.S.), Seoul National University Hospital, Seoul, Republic of Korea; Departments of Orthopaedic Surgery (J.W.P., Y.K.L.) and Internal Medicine (S.H.K.), Seoul National University Bundang Hospital, 82 Gumi-ro 173 Beon-gil, Bundang gu, Seongnam, Republic of Korea; Departments of Medicine (Y.G.K.) and Internal Medicine (S.H.K., J.H.K., S.W.K., C.S.S.), Seoul National University College of Medicine, Seoul, Republic of Korea; and Department of Internal Medicine, Seoul National University Boramae Hospital, Seoul, Republic of Korea (S.W.K.)
| | - Byung Woo Kim
- From the Interdisciplinary Program in Bioengineering (Y.K., Y.S.) and Integrated Major in Innovative Medical Science (Y.K.), Seoul National University Graduate School, Seoul, Republic of Korea; Department of Radiology (Y.K.), Transdisciplinary Department of Medicine & Advanced Technology (Y.G.K., B.W.K., Y.S.), and Department of Internal Medicine (J.H.K., C.S.S.), Seoul National University Hospital, Seoul, Republic of Korea; Departments of Orthopaedic Surgery (J.W.P., Y.K.L.) and Internal Medicine (S.H.K.), Seoul National University Bundang Hospital, 82 Gumi-ro 173 Beon-gil, Bundang gu, Seongnam, Republic of Korea; Departments of Medicine (Y.G.K.) and Internal Medicine (S.H.K., J.H.K., S.W.K., C.S.S.), Seoul National University College of Medicine, Seoul, Republic of Korea; and Department of Internal Medicine, Seoul National University Boramae Hospital, Seoul, Republic of Korea (S.W.K.)
| | - Youmin Shin
- From the Interdisciplinary Program in Bioengineering (Y.K., Y.S.) and Integrated Major in Innovative Medical Science (Y.K.), Seoul National University Graduate School, Seoul, Republic of Korea; Department of Radiology (Y.K.), Transdisciplinary Department of Medicine & Advanced Technology (Y.G.K., B.W.K., Y.S.), and Department of Internal Medicine (J.H.K., C.S.S.), Seoul National University Hospital, Seoul, Republic of Korea; Departments of Orthopaedic Surgery (J.W.P., Y.K.L.) and Internal Medicine (S.H.K.), Seoul National University Bundang Hospital, 82 Gumi-ro 173 Beon-gil, Bundang gu, Seongnam, Republic of Korea; Departments of Medicine (Y.G.K.) and Internal Medicine (S.H.K., J.H.K., S.W.K., C.S.S.), Seoul National University College of Medicine, Seoul, Republic of Korea; and Department of Internal Medicine, Seoul National University Boramae Hospital, Seoul, Republic of Korea (S.W.K.)
| | - Sung Hye Kong
- From the Interdisciplinary Program in Bioengineering (Y.K., Y.S.) and Integrated Major in Innovative Medical Science (Y.K.), Seoul National University Graduate School, Seoul, Republic of Korea; Department of Radiology (Y.K.), Transdisciplinary Department of Medicine & Advanced Technology (Y.G.K., B.W.K., Y.S.), and Department of Internal Medicine (J.H.K., C.S.S.), Seoul National University Hospital, Seoul, Republic of Korea; Departments of Orthopaedic Surgery (J.W.P., Y.K.L.) and Internal Medicine (S.H.K.), Seoul National University Bundang Hospital, 82 Gumi-ro 173 Beon-gil, Bundang gu, Seongnam, Republic of Korea; Departments of Medicine (Y.G.K.) and Internal Medicine (S.H.K., J.H.K., S.W.K., C.S.S.), Seoul National University College of Medicine, Seoul, Republic of Korea; and Department of Internal Medicine, Seoul National University Boramae Hospital, Seoul, Republic of Korea (S.W.K.)
| | - Jung Hee Kim
- From the Interdisciplinary Program in Bioengineering (Y.K., Y.S.) and Integrated Major in Innovative Medical Science (Y.K.), Seoul National University Graduate School, Seoul, Republic of Korea; Department of Radiology (Y.K.), Transdisciplinary Department of Medicine & Advanced Technology (Y.G.K., B.W.K., Y.S.), and Department of Internal Medicine (J.H.K., C.S.S.), Seoul National University Hospital, Seoul, Republic of Korea; Departments of Orthopaedic Surgery (J.W.P., Y.K.L.) and Internal Medicine (S.H.K.), Seoul National University Bundang Hospital, 82 Gumi-ro 173 Beon-gil, Bundang gu, Seongnam, Republic of Korea; Departments of Medicine (Y.G.K.) and Internal Medicine (S.H.K., J.H.K., S.W.K., C.S.S.), Seoul National University College of Medicine, Seoul, Republic of Korea; and Department of Internal Medicine, Seoul National University Boramae Hospital, Seoul, Republic of Korea (S.W.K.)
| | - Young-Kyun Lee
- From the Interdisciplinary Program in Bioengineering (Y.K., Y.S.) and Integrated Major in Innovative Medical Science (Y.K.), Seoul National University Graduate School, Seoul, Republic of Korea; Department of Radiology (Y.K.), Transdisciplinary Department of Medicine & Advanced Technology (Y.G.K., B.W.K., Y.S.), and Department of Internal Medicine (J.H.K., C.S.S.), Seoul National University Hospital, Seoul, Republic of Korea; Departments of Orthopaedic Surgery (J.W.P., Y.K.L.) and Internal Medicine (S.H.K.), Seoul National University Bundang Hospital, 82 Gumi-ro 173 Beon-gil, Bundang gu, Seongnam, Republic of Korea; Departments of Medicine (Y.G.K.) and Internal Medicine (S.H.K., J.H.K., S.W.K., C.S.S.), Seoul National University College of Medicine, Seoul, Republic of Korea; and Department of Internal Medicine, Seoul National University Boramae Hospital, Seoul, Republic of Korea (S.W.K.)
| | - Sang Wan Kim
- From the Interdisciplinary Program in Bioengineering (Y.K., Y.S.) and Integrated Major in Innovative Medical Science (Y.K.), Seoul National University Graduate School, Seoul, Republic of Korea; Department of Radiology (Y.K.), Transdisciplinary Department of Medicine & Advanced Technology (Y.G.K., B.W.K., Y.S.), and Department of Internal Medicine (J.H.K., C.S.S.), Seoul National University Hospital, Seoul, Republic of Korea; Departments of Orthopaedic Surgery (J.W.P., Y.K.L.) and Internal Medicine (S.H.K.), Seoul National University Bundang Hospital, 82 Gumi-ro 173 Beon-gil, Bundang gu, Seongnam, Republic of Korea; Departments of Medicine (Y.G.K.) and Internal Medicine (S.H.K., J.H.K., S.W.K., C.S.S.), Seoul National University College of Medicine, Seoul, Republic of Korea; and Department of Internal Medicine, Seoul National University Boramae Hospital, Seoul, Republic of Korea (S.W.K.)
| | - Chan Soo Shin
- From the Interdisciplinary Program in Bioengineering (Y.K., Y.S.) and Integrated Major in Innovative Medical Science (Y.K.), Seoul National University Graduate School, Seoul, Republic of Korea; Department of Radiology (Y.K.), Transdisciplinary Department of Medicine & Advanced Technology (Y.G.K., B.W.K., Y.S.), and Department of Internal Medicine (J.H.K., C.S.S.), Seoul National University Hospital, Seoul, Republic of Korea; Departments of Orthopaedic Surgery (J.W.P., Y.K.L.) and Internal Medicine (S.H.K.), Seoul National University Bundang Hospital, 82 Gumi-ro 173 Beon-gil, Bundang gu, Seongnam, Republic of Korea; Departments of Medicine (Y.G.K.) and Internal Medicine (S.H.K., J.H.K., S.W.K., C.S.S.), Seoul National University College of Medicine, Seoul, Republic of Korea; and Department of Internal Medicine, Seoul National University Boramae Hospital, Seoul, Republic of Korea (S.W.K.)
| |
Collapse
|
2
|
Jin S, Park JH, Yun HJ, Oh YN, Oh S, Choi YH, Kim BW, Kwon HJ. Erratum: Cedrol, a Sesquiterpene Isolated from Juniperus chinensis, Inhibits Human Colorectal Tumor Growth associated through Downregulation of Minichromosome Maintenance Proteins. J Cancer Prev 2023; 28:75. [PMID: 37434798 PMCID: PMC10331034 DOI: 10.15430/jcp.2023.28.2.75] [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: 07/13/2023] Open
Abstract
[This corrects the article on p. 221 in vol. 27, PMID: 36713942.].
Collapse
Affiliation(s)
- Soojung Jin
- Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan, Korea
| | - Jung-ha Park
- Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan, Korea
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-eui University, Busan, Korea
- Department of Biopharmaceutics, Dong-eui University Graduate School, Busan, Korea
| | - Hee Jung Yun
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-eui University, Busan, Korea
- Department of Biopharmaceutics, Dong-eui University Graduate School, Busan, Korea
| | - You Na Oh
- Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan, Korea
| | - Seunghye Oh
- Department of Biopharmaceutics, Dong-eui University Graduate School, Busan, Korea
| | - Yung Hyun Choi
- Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan, Korea
- Department of Biochemistry, College of Korean Medicine, Busan, Korea
| | - Byung Woo Kim
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-eui University, Busan, Korea
- Department of Biopharmaceutics, Dong-eui University Graduate School, Busan, Korea
- Blue-Bio Industry Regional Innovation Center, Dong-eui University, Busan, Korea
| | - Hyun Ju Kwon
- Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan, Korea
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-eui University, Busan, Korea
- Department of Biopharmaceutics, Dong-eui University Graduate School, Busan, Korea
- Blue-Bio Industry Regional Innovation Center, Dong-eui University, Busan, Korea
| |
Collapse
|
3
|
Lee JJ, Kim BW, Kong SY, Park GJ, Chai HS, Kim YM, Park HJ, Kim H, Lee SW, Kim SC. Age-specific characteristics of road traffic injuries among children and adolescents in South Korea. Traffic Inj Prev 2023:1-6. [PMID: 37216479 DOI: 10.1080/15389588.2023.2212308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 05/06/2023] [Accepted: 02/12/2023] [Indexed: 05/24/2023]
Abstract
OBJECTIVE Road traffic injuries (RTIs) are the leading cause of mortality among children and adolescents. This study aimed to identify and compare the age-specific epidemiology, clinical characteristics and factors related to severe RTIs among children and adolescents who had RTIs. METHODS This multicenter cross-sectional study was conducted using data collected between January 2011 and December 2018 in the Emergency Department-based Injury In-depth Surveillance registry in South Korea. A total of 66,632 participants younger than 19 years who presented with RTIs to emergency departments (EDs) were classified under three age groups: preschoolers (age 0-6 years, n = 18,694), elementary school student (age 7-12 years, n = 21,251), and middle and high school student (age 13-18 years, n = 26,687). Data on demographic and injury-related factors were analyzed, and multivariate logistic regression was used to determine the factors related to severe RTIs, which were defined as the Excess Mortality Ratio-based Injury Severity Score ≥16. RESULTS RTIs among children and adolescents were more common in boys (71.0%), during weekdays (39.7%), in the summer (31.1%), and between 12 noon and 6 pm (47.9%). The most common type of road users were passengers (preschoolers, 46.4%) and cyclists (age 7-12 years and age 13-18 years, 50.1% and 36.2%, respectively). The proportion of head injury was highest in the preschoolers group (57.3%). The length of ED stay, Excess Mortality Ratio-adjusted Injury Severity Score, and the proportion of intensive care unit admission increased with age. Nighttime (0-6 am), vulnerable road users (motorcyclists, bicyclists, and pedestrians), and use of emergency medical services were significantly associated with severe injury. CONCLUSIONS The three age groups of patients younger than 19 years with RTIs differed in the types of road user, proportions of injured body regions, and clinical outcomes. In an effort to reduce RTIs to children and adolescents, age-specific focused intervention should be considered. Additionally, the injury severity was found to be associated with nighttime occurrence, vulnerable road users, ED visit through emergency medical services, and nonuse of safety devices across all age group.
Collapse
Affiliation(s)
- Jung Ju Lee
- Department of Emergency Medicine, Chungbuk National University Hospital, Cheongju-si, Chungcheongbuk-do, Republic of Korea
| | - Byung Woo Kim
- Department of Paramedic Science, Korea National University of Transportation, Jeungpyeong-gun, Chungcheongbuk-do, Republic of Korea
| | - So Yeon Kong
- Strategic Research, Laerdal Medical, Stavanger, Norway
| | - Gwan-Jin Park
- Department of Emergency Medicine, Chungbuk National University Hospital, Cheongju-si, Chungcheongbuk-do, Republic of Korea
- Department of Emergency Medicine, College of Medicine, Chungbuk National University, Cheongju-si, Chungcheongbuk-do, Republic of Korea
| | - Hyun-Seok Chai
- Department of Emergency Medicine, Chungbuk National University Hospital, Cheongju-si, Chungcheongbuk-do, Republic of Korea
- Department of Emergency Medicine, College of Medicine, Chungbuk National University, Cheongju-si, Chungcheongbuk-do, Republic of Korea
| | - Young Min Kim
- Department of Emergency Medicine, Chungbuk National University Hospital, Cheongju-si, Chungcheongbuk-do, Republic of Korea
- Department of Emergency Medicine, College of Medicine, Chungbuk National University, Cheongju-si, Chungcheongbuk-do, Republic of Korea
| | - Ho-Jin Park
- Department of Emergency Medicine, Chungbuk National University Hospital, Cheongju-si, Chungcheongbuk-do, Republic of Korea
| | - Hoon Kim
- Department of Emergency Medicine, Chungbuk National University Hospital, Cheongju-si, Chungcheongbuk-do, Republic of Korea
- Department of Emergency Medicine, College of Medicine, Chungbuk National University, Cheongju-si, Chungcheongbuk-do, Republic of Korea
| | - Suk-Woo Lee
- Department of Emergency Medicine, Chungbuk National University Hospital, Cheongju-si, Chungcheongbuk-do, Republic of Korea
- Department of Emergency Medicine, College of Medicine, Chungbuk National University, Cheongju-si, Chungcheongbuk-do, Republic of Korea
| | - Sang-Chul Kim
- Department of Emergency Medicine, Chungbuk National University Hospital, Cheongju-si, Chungcheongbuk-do, Republic of Korea
- Department of Emergency Medicine, College of Medicine, Chungbuk National University, Cheongju-si, Chungcheongbuk-do, Republic of Korea
| |
Collapse
|
4
|
Min S, Kim DH, Joe DJ, Kim BW, Jung YH, Lee JH, Lee BY, Doh I, An J, Youn YN, Joung B, Yoo CD, Ahn HS, Lee KJ. Clinical Validation of a Wearable Piezoelectric Blood-Pressure Sensor for Continuous Health Monitoring. Adv Mater 2023:e2301627. [PMID: 36960816 DOI: 10.1002/adma.202301627] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/16/2023] [Indexed: 05/12/2023]
Abstract
Wearable blood-pressure sensors have recently attracted attention as healthcare devices for continuous non-invasive arterial pressure (CNAP) monitoring. However, the accuracy of wearable blood-pressure (BP) monitoring devices has been controversial due to the low signal quality of sensors, the absence of an accurate transfer function to convert the sensor signals into BP values, and the lack of clinical validation regarding measurement precision. Here, a wearable piezoelectric blood-pressure sensor (WPBPS) is reported, which achieves a high normalized sensitivity (0.062 kPa-1 ), and fast response time (23 ms) for CNAP monitoring. The transfer function of a linear regression model is designed, offering a simple solution to convert the flexible piezoelectric sensor signals into BP values. In order to verify the measurement accuracy of WPBPS, clinical trials are performed on 35 subjects aged from 20 to 80 s after screening. The mean difference between the WPBPS and a commercial sphygmomanometer of 175 BP data pairs is -0.89 ± 6.19 and -0.32 ± 5.28 mmHg for systolic blood pressure (SBP) and diastolic blood pressure (DBP), respectively. By building a WPBPS-embedded wristwatch, the potentially promising use of a convenient, portable, continuous BP monitoring system for cardiovascular disease diagnosis is demonstrated.
Collapse
Affiliation(s)
- Seongwook Min
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Dong Hyun Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Daniel J Joe
- Safety Measurement Institute, Korea Research Institute of Standards and Science (KRISS), 267 Gajeong-ro, Yuseong-gu, Daejeon, 34113, Republic of Korea
| | - Byung Woo Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Young Hoon Jung
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Jae Hee Lee
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Bo-Yeon Lee
- Department of Nature-Inspired System and Application, Korea Institute of Machinery and Materials (KIMM), 156 Gajeongbuk-ro, Yuseong-gu, Daejeon, 34103, Republic of Korea
| | - Il Doh
- Safety Measurement Institute, Korea Research Institute of Standards and Science (KRISS), 267 Gajeong-ro, Yuseong-gu, Daejeon, 34113, Republic of Korea
| | - Jaehun An
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Young-Nam Youn
- Division of Cardiovascular Surgery, Severance Cardiovascular Hospital, Yonsei University, College of Medicine, Yonsei University Health System, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Boyoung Joung
- Division of Cardiology, Severance Cardiovascular Hospital, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Chang D Yoo
- Department of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Hyo-Suk Ahn
- Department of Internal Medicine, Division of Cardiology, Uijeongbu St Mary's Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea
| | - Keon Jae Lee
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| |
Collapse
|
5
|
Moon SH, Kim SC, Kim BW, Park GJ, Chai HS, Kim YM, Kim HS, Park HS. SARS-CoV-2 molecular diagnostic point-of-care testing based on loop-mediated isothermal amplification: A prospective, single-center validation study. Heliyon 2023; 9:e14564. [PMID: 36942218 PMCID: PMC10014123 DOI: 10.1016/j.heliyon.2023.e14564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 03/04/2023] [Accepted: 03/09/2023] [Indexed: 03/17/2023] Open
Abstract
Objectives Rapid and accurate severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) diagnostic tests are crucial for controlling the spread of infections in emergency settings. This study evaluated the diagnostic accuracy of a point-of-care (POC) test based on loop-mediated isothermal amplification (LAMP) that produces rapid results within 30 min. Methods We prospectively included adult patients (age >19 years) who were diagnosed with SARS-CoV-2 infection within the last 3 days and symptomatic patients who had visited the emergency room. Posterior nasopharyngeal (PNP) swabs and throat swabs collected by physicians were used to test the sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), accuracy, and Cohen's Kappa coefficient (k) of the POC index and reference reverse transcription quantitative polymerase chain reaction (RT-qPCR) test devices. Results Of the 352 participants, 102 (29.0%) tested positive via the RT-PCR-based reference test device; the RT-LAMP-based POC test had a sensitivity of 70.6% and specificity of 98.0%, with 93.5% PPV, 89.1% NPV, 35.5% PLR, and 3.4% NLR. Cohen's k correlation of results from the two devices was 0.74. The cycle threshold value between the positive and negative POC test results differed (17.6 vs. 24.6, p < 0.001). Conclusions The RT-LAMP POC test in the emergency medical setting has a fair predictive value in high viral load cases in terms of infectivity.
Collapse
Affiliation(s)
- Sung Hun Moon
- Department of Emergency Medicine, Chungbuk National University Hospital, 776, 1st Sunhwan-ro, Seowon-gu, Cheongju-si, Chungcheongbuk-do 28646, Republic of Korea
| | - Sang-Chul Kim
- Department of Emergency Medicine, Chungbuk National University Hospital, 776, 1st Sunhwan-ro, Seowon-gu, Cheongju-si, Chungcheongbuk-do 28646, Republic of Korea
- Department of Emergency Medicine, College of Medicine, Chungbuk National University, 1 Chungdae-ro, Seowongu, Cheongju-si, Chungcheongbuk-do 28646, Republic of Korea
| | - Byung Woo Kim
- Department of Paramedic Science, Korea National University of Transportation, 61, Daehak-ro, Jeungpyeong-gun, Chungcheongbuk-do, 27909, Republic of Korea
| | - Gwan-Jin Park
- Department of Emergency Medicine, Chungbuk National University Hospital, 776, 1st Sunhwan-ro, Seowon-gu, Cheongju-si, Chungcheongbuk-do 28646, Republic of Korea
| | - Hyun-Seok Chai
- Department of Emergency Medicine, Chungbuk National University Hospital, 776, 1st Sunhwan-ro, Seowon-gu, Cheongju-si, Chungcheongbuk-do 28646, Republic of Korea
| | - Young Min Kim
- Department of Emergency Medicine, Chungbuk National University Hospital, 776, 1st Sunhwan-ro, Seowon-gu, Cheongju-si, Chungcheongbuk-do 28646, Republic of Korea
| | - Hee Sung Kim
- Department of Internal Medicine, Chungbuk National University Hospital, 776, 1st Sunhwan-ro, Seowon-gu, Cheongju-si, Chungcheongbuk-do 28646, Republic of Korea
- College of Medicine and Medical Research Institute, Chungbuk National University, 1 Chungdae-ro, Seowongu, Cheongju-si, Chungcheongbuk-do 28646, Republic of Korea
| | - Hee Sue Park
- Department of Laboratory Medicine, Chungbuk National University Hospital, 776, 1st Sunhwan-ro, Seowon-gu, Cheongju-si, Chungcheongbuk-do 28646, Republic of Korea
- Department of Laboratory Medicine, College of Medicine, Chungbuk National University, 1 Chungdae-ro, Seowongu, Cheongju-si, Chungcheongbuk-do 28646, Republic of Korea
| |
Collapse
|
6
|
Jeong YE, Rajbhandari L, Kim BW, Venkatesan A, Hoke A. Downregulation of SF3B2 protects CNS neurons in models of multiple sclerosis. Ann Clin Transl Neurol 2023; 10:246-265. [PMID: 36574260 PMCID: PMC9930435 DOI: 10.1002/acn3.51717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/21/2022] [Accepted: 11/21/2022] [Indexed: 12/29/2022] Open
Abstract
OBJECTIVE Neurodegeneration induced by inflammatory stress in multiple sclerosis (MS) leads to long-term neurological disabilities that are not amenable to current immunomodulatory therapies. METHODS AND RESULTS Here, we report that neuronal downregulation of Splicing factor 3b subunit 2 (SF3B2), a component of U2 small nuclear ribonucleoprotein (snRNP), preserves retinal ganglion cell (RGC) survival and axonal integrity in experimental autoimmune encephalomyelitis (EAE)-induced mice. By employing an in vitro system recapitulating the inflammatory environment of MS lesion, we show that when SF3B2 levels are downregulated, cell viability and axon integrity are preserved in cortical neurons against inflammatory toxicity. Notably, knockdown of SF3B2 suppresses the expression of injury-response and necroptosis genes and prevents activation of Sterile Alpha and TIR Motif Containing 1 (Sarm1), a key enzyme that mediates programmed axon degeneration. INTERPRETATION Together, these findings suggest that the downregulation of SF3B2 is a novel potential therapeutic target to prevent secondary neurodegeneration in MS.
Collapse
Affiliation(s)
- Ye Eun Jeong
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, 21205, USA
| | - Labchan Rajbhandari
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, 21205, USA
| | - Byung Woo Kim
- Division of Neuropathology, Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland, 21205, USA
| | - Arun Venkatesan
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, 21205, USA
| | - Ahmet Hoke
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, 21205, USA
| |
Collapse
|
7
|
Park C, Lee H, Kim SO, Lee EW, Lee HT, Kwon HJ, Kim BW, Kim GY, Kim MR, Choi YH. The preventive effect of Mori Ramulus on oxidative stress-induced cellular damage in skeletal L6 myoblasts through Nrf2-mediated activation of HO-1. Toxicol Res 2023; 39:25-36. [PMID: 36726826 PMCID: PMC9839907 DOI: 10.1007/s43188-022-00141-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 06/16/2022] [Accepted: 06/20/2022] [Indexed: 02/04/2023] Open
Abstract
The aim of the present study is to investigate the preventive effect of water extract of Mori Ramulus (MRWE) on oxidative stress-mediated cellular damages in rat skeletal L6 myoblasts. Our results demonstrated that MRWE pretreatment markedly improved cell survival and suppressed cell cycle arrest at the G2/M phase and apoptosis in hydrogen peroxide (H2O2)-treated L6 cells. H2O2-triggered DNA damage was also notably reduced by MRWE, which since it was correlated with protection of reactive oxygen species (ROS) production. Additionally, H2O2 stimulated cytosolic release of cytochrome c and up-regulation of Bax/Bcl-2 ratio, whereas MRWE suppressed these changes following by H2O2. Moreover, MRWE inhibited the cleavage of poly(ADP-ribose) polymerase as well as the activity of caspase-3 by H2O2. Furthermore, MRWE enhanced H2O2-mediated expression of nuclear factor erythroid 2-associated factor 2 (Nrf2) and its representative downstream enzyme, heme oxygenase-1 (HO-1). However, the protective effects of MRWE on H2O2-induced ROS production, cell cycle arrest and apoptosis were significantly attenuated by HO-1 inhibitor. In conclusion, our present results suggests that MRWE could protect L6 myoblasts from H2O2-induced cellular injury by inhibiting ROS generation along with Nrf2-mediated activation of HO-1, indicating this finding may expand the scope of application of Mori Ramulus in medicine.
Collapse
Affiliation(s)
- Cheol Park
- Division of Basic Sciences, College of Liberal Studies, Dong-eui University, Busan, 47340 Republic of Korea
| | - Hyesook Lee
- Anti-Aging Research Center, Dong-eui University, Busan, 47340 Republic of Korea
- Department of Convergence Medicine, Pusan National University School of Medicine, Yangsan, 50612 Republic of Korea
| | - Sung Ok Kim
- Department of Food and Nutrition, College of Life and Health, Kyungsung University, Busan, 48434 Republic of Korea
| | - Eun-Woo Lee
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-eui University, Busan, 47340 Republic of Korea
- Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan, 47340 Republic of Korea
| | - Hyun-Tai Lee
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-eui University, Busan, 47340 Republic of Korea
- Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan, 47340 Republic of Korea
| | - Hyun Ju Kwon
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-eui University, Busan, 47340 Republic of Korea
- Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan, 47340 Republic of Korea
| | - Byung Woo Kim
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-eui University, Busan, 47340 Republic of Korea
- Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan, 47340 Republic of Korea
| | - Gi-Young Kim
- Department of Marine Life Science, Jeju National University, Jeju, 63243 Republic of Korea
| | - Mi Ryeo Kim
- Department of Pharmacology, College of Korean Medicine, Daegu Haany University, Daegu, 42158 Republic of Korea
| | - Yung Hyun Choi
- Anti-Aging Research Center, Dong-eui University, Busan, 47340 Republic of Korea
- Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan, 47340 Republic of Korea
- Department of Biochemistry, College of Korean Medicine, Dong-eui University, Busan, 47227 Republic of Korea
| |
Collapse
|
8
|
Jin S, Park JH, Yun HJ, Oh YN, Oh S, Choi YH, Kim BW, Kwon HJ. Cedrol, a Sesquiterpene Isolated from Juniperus chinensis, Inhibits Human Colorectal Tumor Growth associated through Downregulation of Minichromosome Maintenance Proteins. J Cancer Prev 2022; 27:221-228. [PMID: 36713942 PMCID: PMC9836914 DOI: 10.15430/jcp.2022.27.4.221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 12/18/2022] [Accepted: 12/27/2022] [Indexed: 01/11/2023] Open
Abstract
Cedrol, a sesquiterpene alcohol, isolated from Juniperus chinensis has been reported to inhibit minichromosome maintenance (MCM) proteins as cancer biomarkers in human lung cancer in vitro. In the present study, we investigated the anti-cancer activity of cedrol in vitro and in vivo using human colorectal cancer HT29 cells and a human colorectal tumor xenograft model. Cedrol inhibited MCM protein expression and cell growth in HT29 cells, which are associated with G1 arrest and the induction of apoptosis. We demonstrated that cedrol effectively reduced HT29 tumor growth without apparent weight loss in a human tumor xenograft model. Compared with vehicle- and adriamycin-treated tumor tissues, cedrol induced changes in the tumor tissue structure, resulting in a reduced cell density within the tumor parenchyma and reduced vascularization. Moreover, the expression of MCM7, an important subunit of MCM helicase, was significantly suppressed by cedrol in tumor tissue. Collectively, these results suggest that cedrol may act as a potential anti-cancer agent for colorectal cancer by inhibiting MCM protein expression and tumor growth.
Collapse
Affiliation(s)
- Soojung Jin
- Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan, Korea
| | - Jung-ha Park
- Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan, Korea,Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-eui University, Busan, Korea,Department of Biopharmaceutics, Dong-eui University Graduate School, Busan, Korea
| | - Hee Jung Yun
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-eui University, Busan, Korea,Department of Biopharmaceutics, Dong-eui University Graduate School, Busan, Korea
| | - You Na Oh
- Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan, Korea
| | - Seunghye Oh
- Department of Biopharmaceutics, Dong-eui University Graduate School, Busan, Korea
| | - Yung Hyun Choi
- Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan, Korea,Department of Biochemistry, College of Korean Medicine, Busan, Korea
| | - Byung Woo Kim
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-eui University, Busan, Korea,Department of Biopharmaceutics, Dong-eui University Graduate School, Busan, Korea,Blue-Bio Industry Regional Innovation Center, Dong-eui University, Busan, Korea,Byung Woo Kim, E-mail: , https://orcid.org/0000-0001-7940-1074
| | - Hyun Ju Kwon
- Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan, Korea,Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-eui University, Busan, Korea,Department of Biopharmaceutics, Dong-eui University Graduate School, Busan, Korea,Blue-Bio Industry Regional Innovation Center, Dong-eui University, Busan, Korea,Correspondence to Hyun Ju Kwon, E-mail: , https://orcid.org/0000-0002-1375-0906
| |
Collapse
|
9
|
Choi HJ, Kim BW, Lee S, Jeong OC. Microfluidic Acoustophoresis for Flowthrough Separation of Gram-Negative Bacteria using Aptamer Affinity Beads. J Vis Exp 2022. [DOI: 10.3791/63300] [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
|
10
|
Yun HJ, Jeoung DJ, Jin S, Park JH, Lee EW, Lee HT, Choi YH, Kim BW, Kwon HJ. Induction of Cell Cycle Arrest, Apoptosis, and Reducing the Expression of MCM Proteins in Human Lung Carcinoma A549 Cells by Cedrol, Isolated from Juniperus chinensis. J Microbiol Biotechnol 2022; 32:918-926. [PMID: 35880481 PMCID: PMC9628924 DOI: 10.4014/jmb.2205.05012] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 06/22/2022] [Accepted: 06/29/2022] [Indexed: 12/15/2022]
Abstract
Proteins related to DNA replication have been proposed as cancer biomarkers and targets for anticancer agents. Among them, minichromosome maintenance (MCM) proteins, often overexpressed in various cancer cells, are recognized both as notable biomarkers for cancer diagnosis and as targets for cancer treatment. Here, we investigated the activity of cedrol, a single compound isolated from Juniperus chinensis, in reducing the expression of MCM proteins in human lung carcinoma A549 cells. Remarkably, cedrol also strongly inhibited the expression of all other MCM protein family members in A549 cells. Moreover, cedrol treatment reduced cell viability in A549 cells, accompanied by cell cycle arrest at the G1 phase, and enhanced apoptosis. Taken together, this study broadens our understanding of how cedrol executes its anticancer activity while demonstrating that cedrol has potential application in the treatment of human lung cancer as an inhibitor of MCM proteins.
Collapse
Affiliation(s)
- Hee Jung Yun
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-eui University, Busan 47340, Republic of Korea,Department of Biopharmaceutics, Dong-eui University Graduate School, Busan 47340, Republic of Korea
| | - Da Jeoung Jeoung
- Department of Biopharmaceutics, Dong-eui University Graduate School, Busan 47340, Republic of Korea
| | - Soojung Jin
- Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan 47340, Republic of Korea
| | - Jung-ha Park
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-eui University, Busan 47340, Republic of Korea,Department of Biopharmaceutics, Dong-eui University Graduate School, Busan 47340, Republic of Korea,Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan 47340, Republic of Korea
| | - Eun-Woo Lee
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-eui University, Busan 47340, Republic of Korea,Department of Biopharmaceutics, Dong-eui University Graduate School, Busan 47340, Republic of Korea,Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan 47340, Republic of Korea
| | - Hyun-Tai Lee
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-eui University, Busan 47340, Republic of Korea,Department of Biopharmaceutics, Dong-eui University Graduate School, Busan 47340, Republic of Korea,Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan 47340, Republic of Korea
| | - Yung Hyun Choi
- Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan 47340, Republic of Korea,Department of Biochemistry, College of Korean Medicine, Dong-eui University, Busan 47227, Republic of Korea
| | - Byung Woo Kim
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-eui University, Busan 47340, Republic of Korea,Department of Biopharmaceutics, Dong-eui University Graduate School, Busan 47340, Republic of Korea,Blue-Bio Industry Regional Innovation Center, Dong-eui University, Busan 47340, Republic of Korea,Corresponding authors B.W. Kim Phone: +82-51-890-2900 E-mail:
| | - Hyun Ju Kwon
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-eui University, Busan 47340, Republic of Korea,Department of Biopharmaceutics, Dong-eui University Graduate School, Busan 47340, Republic of Korea,Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan 47340, Republic of Korea,
H.J. Kwon Phone: +82-51-890-1519 Fax: +82-505-182-6871 E-mail:
| |
Collapse
|
11
|
Park C, Lee H, Jin S, Park JH, Han MH, Jeong JW, Kwon HJ, Kim BW, Park SH, Hong SH, Kim GY, Choi YH. The preventive effect of loganin on oxidative stress-induced cellular damage in human keratinocyte HaCaT cells. Biosci Trends 2022; 16:291-300. [PMID: 35691912 DOI: 10.5582/bst.2022.01116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Loganin is a type of iridoid glycosides isolated from Corni fructus and is known to have various pharmacological properties, but studies on its antioxidant activity are still lacking. Therefore, in this study, the preventive effect of loganin on oxidative stress-mediated cellular damage in human keratinocyte HaCaT cells was investigated. Our results show that loganin pretreatment in a non-toxic concentration range significantly improved cell survival in hydrogen peroxide (H2O2)-treated HaCaT cells, which was associated with inhibition of cell cycle arrest at the G2/M phase and induction of apoptosis. H2O2-induced DNA damage and reactive oxygen species (ROS) generation were also greatly reduced in the presence of loganin. Moreover, H2O2 treatment enhanced the cytoplasmic release of cytochrome c, upregulation of the Bax/Bcl-2 ratio and degradation of cleavage of poly (ADP-ribose) polymerase, whereas loganin remarkably suppressed these changes. In addition, loganin obviously attenuated H2O2-induced autophagy while inhibiting the increased accumulation of autophagosome proteins, including as microtubule-associated protein 1 light chain 3-II and Beclin-1, and p62, an autophagy substrate protein, in H2O2-treated cells. In conclusion, our current results suggests that loganin could protect HaCaT keratinocytes from H2O2-induced cellular injury by inhibiting mitochondrial dysfunction, autophagy and apoptosis. This finding indicates the applicability of loganin in the prevention and treatment of skin diseases caused by oxidative damage.
Collapse
Affiliation(s)
- Cheol Park
- Division of Basic Sciences, College of Liberal Studies, Dong-eui University, Busan, Korea
| | - Hyesook Lee
- Department of Convergence Medicine, Pusan National University School of Medicine, Yangsan, Korea
| | - Soojung Jin
- Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan, Korea
| | - Jung-Ha Park
- Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan, Korea.,Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-eui University, Busan, Korea
| | - Min Ho Han
- National Marine Biodiversity Institute of Korea, Seocheon, Korea
| | - Jin-Woo Jeong
- Nakdonggang National Institute of Biological Resources, Sangju, Korea
| | - Hyun Ju Kwon
- Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan, Korea.,Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-eui University, Busan, Korea
| | - Byung Woo Kim
- Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan, Korea.,Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-eui University, Busan, Korea
| | - Shin-Hyung Park
- Department of Pathology, Dong-eui University College of Korean Medicine, Busan, Korea
| | - Su Hyun Hong
- Anti-Aging Research Center, Dong-eui University, Busan, Korea.,Department of Biochemistry, Dong-eui University College of Korean Medicine, Busan, Korea
| | - Gi-Young Kim
- Department of Marine Life Science, Jeju National University, Jeju, Korea
| | - Yung Hyun Choi
- Core-Facility Center for Tissue Regeneration, Dong-eui University, Busan, Korea.,Anti-Aging Research Center, Dong-eui University, Busan, Korea.,Department of Biochemistry, Dong-eui University College of Korean Medicine, Busan, Korea
| |
Collapse
|
12
|
Jin S, Oh YN, Son YR, Kwon B, Park JH, Gang MJ, Kim BW, Kwon HJ. Three-Dimensional Skin Tissue Printing with Human Skin Cell Lines and Mouse Skin-Derived Epidermal and Dermal Cells. J Microbiol Biotechnol 2022; 32:238-247. [PMID: 34949744 PMCID: PMC9628848 DOI: 10.4014/jmb.2111.11042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/12/2021] [Accepted: 12/13/2021] [Indexed: 12/15/2022]
Abstract
Since the skin covers most surfaces of the body, it is susceptible to damage, which can be fatal depending on the degree of injury to the skin because it defends against external attack and protects internal structures. Various types of artificial skin are being studied for transplantation to repair damaged skin, and recently, the production of replaceable skin using three-dimensional (3D) bioprinting technology has also been investigated. In this study, skin tissue was produced using a 3D bioprinter with human skin cell lines and cells extracted from mouse skin, and the printing conditions were optimized. Gelatin was used as a bioink, and fibrinogen and alginate were used for tissue hardening after printing. Printed skin tissue maintained a survival rate of 90% or more when cultured for 14 days. Culture conditions were established using 8 mM calcium chloride treatment and the skin tissue was exposed to air to optimize epidermal cell differentiation. The skin tissue was cultured for 14 days after differentiation induction by this optimized culture method, and immunofluorescent staining was performed using epidermal cell differentiation markers to investigate whether the epidermal cells had differentiated. After differentiation, loricrin, which is normally found in terminally differentiated epidermal cells, was observed in the cells at the tip of the epidermal layer, and cytokeratin 14 was expressed in the lower cells of the epidermis layer. Collectively, this study may provide optimized conditions for bioprinting and keratinization for three-dimensional skin production.
Collapse
Affiliation(s)
- Soojung Jin
- Core-Facility Center for Tissue Regeneration, Dong-Eui University, Busan 47340, Republic of Korea
| | - You Na Oh
- Core-Facility Center for Tissue Regeneration, Dong-Eui University, Busan 47340, Republic of Korea
| | - Yu Ri Son
- Core-Facility Center for Tissue Regeneration, Dong-Eui University, Busan 47340, Republic of Korea
| | - Boguen Kwon
- Core-Facility Center for Tissue Regeneration, Dong-Eui University, Busan 47340, Republic of Korea
| | - Jung-ha Park
- Core-Facility Center for Tissue Regeneration, Dong-Eui University, Busan 47340, Republic of Korea,Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-Eui University, Busan 47340, Republic of Korea
| | - Min jeong Gang
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-Eui University, Busan 47340, Republic of Korea
| | - Byung Woo Kim
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-Eui University, Busan 47340, Republic of Korea,Blue-Bio Industry Regional Innovation Center, Dong-Eui University, Busan 47340, Republic of Korea,
B.W. Kim Phone: +82-51-890-2900 Fax: +82-505-182-6951 E-mail:
| | - Hyun Ju Kwon
- Core-Facility Center for Tissue Regeneration, Dong-Eui University, Busan 47340, Republic of Korea,Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-Eui University, Busan 47340, Republic of Korea,Blue-Bio Industry Regional Innovation Center, Dong-Eui University, Busan 47340, Republic of Korea,Corresponding authors H.J. Kwon Phone: +82-51-890-4471 Fax: +82-505-182-6871 E-mail:
| |
Collapse
|
13
|
Park C, Jeong JW, Han MH, Lee H, Kim GY, Jin S, Park JH, Kwon HJ, Kim BW, Choi YH. The anti-cancer effect of betulinic acid in u937 human leukemia cells is mediated through ROS-dependent cell cycle arrest and apoptosis. Anim Cells Syst (Seoul) 2021; 25:119-127. [PMID: 34234893 PMCID: PMC8118407 DOI: 10.1080/19768354.2021.1915380] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Although previous studies have shown anti-cancer activity of betulinic acid (BA), a pentacyclic triterpenoid, against various cancer lines, the underlying molecular mechanisms are not well elucidated. In this study, we evaluated the mechanisms involved in the anti-cancer efficacy of BA in U937 human myeloid leukemia cells. BA exerted a significant cytotoxic effect on U937 cells through blocking cell cycle arrest at the G2/M phase and inducing apoptosis, and that the intracellular reactive oxygen species (ROS) levels increased after treatment with BA. The down-regulation of cyclin A and cyclin B1, and up-regulation of cyclin-dependent kinase inhibitor p21WAF1/CIP1 revealed the G2/M phase arrest mechanism of BA. In addition, BA induced the cytosolic release of cytochrome c by reducing the mitochondrial membrane potential with an increasing Bax/Bcl-2 expression ratio. BA also increased the activity of caspase-9 and -3, and subsequent degradation of the poly (ADP-ribose) polymerase. However, quenching of ROS by N-acetyl-cysteine, an ROS scavenger, markedly abolished BA-induced G2/M arrest and apoptosis, indicating that the generation of ROS plays a key role in inhibiting the proliferation of U937 cells by BA treatment. Taken together, our results provide a mechanistic rationale that BA exhibits anti-cancer properties in U937 leukemia cells through ROS-dependent induction of cell cycle arrest at G2/M phase and apoptosis.
Collapse
Affiliation(s)
- Cheol Park
- College of Liberal Studies, Dong-Eui University, Busan, Republic of Korea
| | - Jin-Woo Jeong
- Nakdonggang National Institute of Biological Resources, Sangju, Republic of Korea
| | - Min Ho Han
- National Marine Biodiversity Institute of Korea, Seocheon, Republic of Korea
| | - Hyesook Lee
- Anti-Aging Research Center, Dong-eui University, Busan, Republic of Korea.,Department of Biochemistry, Dong-eui University College of Korean Medicine, Busan, Republic of Korea
| | - Gi-Young Kim
- Department of Marine Life Sciences, Jeju National University, Jeju, Republic of Korea
| | - Soojung Jin
- Core-Facility Center for Tissue Regeneration, Dong Eui University, Busan, Republic of Korea
| | - Jung-Ha Park
- Core-Facility Center for Tissue Regeneration, Dong Eui University, Busan, Republic of Korea.,Biopharmaceutical Engineering Major, Dong-eui University, Busan, Republic of Korea
| | - Hyun Ju Kwon
- Core-Facility Center for Tissue Regeneration, Dong Eui University, Busan, Republic of Korea.,Biopharmaceutical Engineering Major, Dong-eui University, Busan, Republic of Korea
| | - Byung Woo Kim
- Biopharmaceutical Engineering Major, Dong-eui University, Busan, Republic of Korea
| | - Yung Hyun Choi
- Anti-Aging Research Center, Dong-eui University, Busan, Republic of Korea.,Department of Biochemistry, Dong-eui University College of Korean Medicine, Busan, Republic of Korea.,Core-Facility Center for Tissue Regeneration, Dong Eui University, Busan, Republic of Korea
| |
Collapse
|
14
|
Kim BW, Martin LJ. Mending the broken in amyotrophic lateral sclerosis: DNA damage and repair in motor neuron degeneration. Neural Regen Res 2021; 16:104-105. [PMID: 32788455 PMCID: PMC7818865 DOI: 10.4103/1673-5374.286960] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Byung Woo Kim
- Department of Pathology, Division of Neuropathology, the Pathobiology Graduate Training Program, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Lee J Martin
- Department of Pathology, Division of Neuropathology, the Pathobiology Graduate Training Program; Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| |
Collapse
|
15
|
Park MY, Kim BW, Moehrle M, Troppenz U, Rehbein W, Sigmund A, Hong SJ. Liquid crystal filter based tunable transmitter for 25Gps wavelength division multiplexing-passive optical network fronthaul. Opt Express 2020; 28:38942-38948. [PMID: 33379452 DOI: 10.1364/oe.411907] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 11/29/2020] [Indexed: 06/12/2023]
Abstract
A novel tunable transmitter structure based on liquid crystal filter, to the best of our knowledge, is presented. The structure is designed for application to 5G fronthaul and supports 25 Gbps dense wavelength division multiplexing (WDM) transmission and tunable range of 35 nm. The design takes into account easy change of operation band over coarse WDM grid. Prototype samples are developed to test feasibility of the design.
Collapse
|
16
|
Kim BW, Ryu J, Jeong YE, Kim J, Martin LJ. Human Motor Neurons With SOD1-G93A Mutation Generated From CRISPR/Cas9 Gene-Edited iPSCs Develop Pathological Features of Amyotrophic Lateral Sclerosis. Front Cell Neurosci 2020; 14:604171. [PMID: 33328898 PMCID: PMC7710664 DOI: 10.3389/fncel.2020.604171] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [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: 09/08/2020] [Accepted: 10/30/2020] [Indexed: 12/14/2022] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disorder characterized by gradual degeneration and elimination of motor neurons (MNs) in the motor cortex, brainstem, and spinal cord. Some familial forms of ALS are caused by genetic mutations in superoxide dismutase 1 (SOD1) but the mechanisms driving MN disease are unclear. Identifying the naturally occurring pathology and understanding how this mutant SOD1 can affect MNs in translationally meaningful ways in a valid and reliable human cell model remains to be established. Here, using CRISPR/Cas9 genome editing system and human induced pluripotent stem cells (iPSCs), we generated highly pure, iPSC-derived MNs with a SOD1-G93A missense mutation. With the wild-type cell line serving as an isogenic control and MNs from a patient-derived iPSC line with an SOD1-A4V mutation as a comparator, we identified pathological phenotypes relevant to ALS. The mutant MNs accumulated misfolded and aggregated forms of SOD1 in cell bodies and processes, including axons. They also developed distinctive axonal pathologies. Mutants had axonal swellings with shorter axon length and less numbers of branch points. Moreover, structural and molecular abnormalities in presynaptic and postsynaptic size and density were found in the mutants. Finally, functional studies with microelectrode array demonstrated that the individual mutant MNs exhibited decreased number of spikes and diminished network bursting, but increased burst duration. Taken together, we identified spontaneous disease phenotypes relevant to ALS in mutant SOD1 MNs from genome-edited and patient-derived iPSCs. Our findings demonstrate that SOD1 mutations in human MNs cause cell-autonomous proteinopathy, axonopathy, synaptic pathology, and aberrant neurotransmission.
Collapse
Affiliation(s)
- Byung Woo Kim
- Division of Neuropathology, Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Jiwon Ryu
- Division of Neuropathology, Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Ye Eun Jeong
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Juhyun Kim
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Lee J Martin
- Division of Neuropathology, Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, United States.,The Solomon H Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, United States.,Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| |
Collapse
|
17
|
Park JH, Jung IK, Lee Y, Jin S, Yun HJ, Kim BW, Kwon HJ. Alcohol stimulates the proliferation of mouse small intestinal epithelial cells via Wnt signaling. Biochem Biophys Res Commun 2020; 534:639-645. [PMID: 33220923 DOI: 10.1016/j.bbrc.2020.11.028] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 11/08/2020] [Indexed: 02/07/2023]
Abstract
The intestinal epithelium is one of the fastest renewing tissues in mammals and is a barrier against toxic substances such as alcohol. Excessive alcohol can induce intestinal damage leading to intestinal bowel diseases. Thus, the control of small intestinal epithelial cell (IEC) regeneration is thought to be important for homeostasis in response to epithelium damage. However, reports on how epithelial cells respond to small intestinal damage are scarce. We investigated the effects of alcohol consumption on small intestinal epithelial cells of mice. To verify that alcohol altered the small intestinal epithelium, we used 8-10 weeks old male C57BL/6J mice for models of chronic and binge alcohol consumption (the NIAAA model) in addition to an organoid model. Alcohol promoted the proliferative activity of IECs and intestinal stem cells (ISCs) in intestinal crypts. Alcohol consumption increased expression of the proliferation marker cyclin D1 and activated the p44/42 MAPK (Erk1/2) signaling pathway in small intestinal epithelial cells. The Wnt target genes were markedly increased in IECs from alcohol-treated mice. In the small intestinal organoid model exposed to alcohol, the organoid area and numbers of buds increased with alcohol concentrations up to 0.5% similar to in vivo observations. These results suggest that alcohol consumption stimulates the proliferation of small intestinal epithelial cells via Wnt signaling.
Collapse
Affiliation(s)
- Jung-Ha Park
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, Dong-eui University, Busan, 47340, South Korea; Core-Facility Center for Tissue Regeneration, Dong-eui University, South Korea.
| | - In Kyo Jung
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, Dong-eui University, Busan, 47340, South Korea; Department of Chronic Disease Convergence Research, Korea National Institute of Health, Cheongju, 28159, South Korea
| | - Yongjun Lee
- Hongcheon Institute of Medicinal Herb, Hongcheon, 25142, South Korea
| | - Soojung Jin
- Core-Facility Center for Tissue Regeneration, Dong-eui University, South Korea
| | - Hee Jung Yun
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, Dong-eui University, Busan, 47340, South Korea
| | - Byung Woo Kim
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, Dong-eui University, Busan, 47340, South Korea; Blue-Bio Industry Regional Innovation Center, Dong-eui University, South Korea
| | - Hyun Ju Kwon
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, Dong-eui University, Busan, 47340, South Korea; Core-Facility Center for Tissue Regeneration, Dong-eui University, South Korea; Blue-Bio Industry Regional Innovation Center, Dong-eui University, South Korea.
| |
Collapse
|
18
|
Kim J, Chun SH, Amornkitbamrung L, Song C, Yuk JS, Ahn SY, Kim BW, Lim YT, Oh BK, Um SH. Gold nanoparticle clusters for the investigation of therapeutic efficiency against prostate cancer under near-infrared irradiation. Nano Converg 2020; 7:5. [PMID: 32064551 PMCID: PMC7024685 DOI: 10.1186/s40580-019-0216-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 12/30/2019] [Indexed: 05/06/2023]
Abstract
Gold particles have been widely used in the treatment of prostate cancer due to their unique optical properties, such as their light-heat conversion in response to near-infrared radiation. Due to well-defined synthesis mechanisms and simple manufacturing methods, gold particles have been fabricated in various sizes and shapes. However, the low photothermal transduction efficiency in their present form is a major obstacle to practical and therapeutic uses of these particles. In the current work, we present a silica-coated gold nanoparticle cluster to address the therapeutic limit of single gold nanoparticles (AuNPs) and use its photothermal effect for treatment against PC-3, a typical prostate cancer. Due to its specific nanostructure, this gold nanocluster showed three times higher photothermal transduction efficiency than free single AuNPs. Moreover, while free single particles easily clump and lose optical properties, this silica-coated cluster form remained stable for a longer time in a given medium. In photothermal tests under near-infrared radiation, the excellent therapeutic efficacy of gold nanoclusters, referred to as AuNC@SiO2, was observed in a preclinical sample. Only the samples with both injected nanoclusters followed by photothermal treatment showed completely degraded tumors after 15 days. Due to the unique intrinsic biocompatibility and higher therapeutic effect of these silica-coated gold nanoclusters, they may contribute to enhancement of therapeutic efficacy against prostate cancer.
Collapse
Affiliation(s)
- Jeonghun Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 16419 South Korea
| | - Sang Hun Chun
- School of Chemical Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 16419 South Korea
| | - Lunjakorn Amornkitbamrung
- Polymer Engineering Laboratory, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok, 10330 Thailand
| | - Chanyoung Song
- School of Chemical Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 16419 South Korea
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon, Gyeonggi-do 16419 South Korea
| | - Ji Soo Yuk
- School of Chemical Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 16419 South Korea
| | - So Yeon Ahn
- School of Chemical Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 16419 South Korea
| | - Byung Woo Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 16419 South Korea
| | - Yong Taik Lim
- School of Chemical Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 16419 South Korea
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon, Gyeonggi-do 16419 South Korea
- Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon, Gyeonggi-do 16419 South Korea
| | - Byung-Keun Oh
- Department of Chemical and Biomolecular Engineering, Sogang University, Seoul, 04107 South Korea
| | - Soong Ho Um
- School of Chemical Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 16419 South Korea
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon, Gyeonggi-do 16419 South Korea
- Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon, Gyeonggi-do 16419 South Korea
| |
Collapse
|
19
|
Kim BW, Jeong YE, Wong M, Martin LJ. DNA damage accumulates and responses are engaged in human ALS brain and spinal motor neurons and DNA repair is activatable in iPSC-derived motor neurons with SOD1 mutations. Acta Neuropathol Commun 2020; 8:7. [PMID: 32005289 PMCID: PMC6995159 DOI: 10.1186/s40478-019-0874-4] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 12/17/2019] [Indexed: 12/12/2022] Open
Abstract
DNA damage is implicated in the pathogenesis of amyotrophic lateral sclerosis (ALS). However, relationships between DNA damage accumulation, DNA damage response (DDR), and upper and lower motor neuron vulnerability in human ALS are unclear; furthermore, it is unknown whether epigenetic silencing of DNA repair pathways contributes to ALS pathogenesis. We tested the hypotheses that DNA damage accumulates in ALS motor neurons along with diminished DDR, and that DNA repair genes undergo hypermethylation. Human postmortem CNS tissue was obtained from ALS cases (N = 34) and age-matched controls without neurologic disease (N = 15). Compared to age-matched controls, abasic sites accumulated in genomic DNA of ALS motor cortex and laser capture microdissection-acquired spinal motor neurons but not in motor neuron mitochondrial DNA. By immunohistochemistry, DNA damage accumulated significantly in upper and lower motor neurons in ALS cases as single-stranded DNA and 8-hydroxy-deoxyguanosine (OHdG) compared to age-matched controls. Significant DDR was engaged in ALS motor neurons as evidenced by accumulation of c-Abl, nuclear BRCA1, and ATM activation. DNA damage and DDR were present in motor neurons at pre-attritional stages and throughout the somatodendritic attritional stages of neurodegeneration. Motor neurons with DNA damage were also positive for activated p53 and cleaved caspase-3. Gene-specific promoter DNA methylation pyrosequencing identified the DNA repair genes Ogg1, Apex1, Pnkp and Aptx as hypomethylated in ALS. In human induced-pluripotent stem cell (iPSC)-derived motor neurons with familial ALS SOD1 mutations, DNA repair capacity was similar to isogenic control motor neurons. Our results show that vulnerable neurons in human ALS accumulate DNA damage, and contrary to our hypothesis, strongly activate and mobilize response effectors and DNA repair genes. This DDR in ALS motor neurons involves recruitment of c-Abl and BRCA1 to the nucleus in vivo, and repair of DNA double-strand breaks in human ALS motor neurons with SOD1 mutations in cell culture.
Collapse
Affiliation(s)
- Byung Woo Kim
- Department of Pathology, Johns Hopkins University School of Medicine, 558 Ross Building, 720 Rutland Avenue, Baltimore, MD, 21205-2196, USA
- Division of Neuropathology, the Pathobiology Graduate Training Program, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Ye Eun Jeong
- Division of Neuropathology, the Pathobiology Graduate Training Program, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Margaret Wong
- Department of Pathology, Johns Hopkins University School of Medicine, 558 Ross Building, 720 Rutland Avenue, Baltimore, MD, 21205-2196, USA
| | - Lee J Martin
- Department of Pathology, Johns Hopkins University School of Medicine, 558 Ross Building, 720 Rutland Avenue, Baltimore, MD, 21205-2196, USA.
- Division of Neuropathology, the Pathobiology Graduate Training Program, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
- Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
| |
Collapse
|
20
|
Lee S, Kim BW, Shin HS, Go A, Lee MH, Lee DK, Kim S, Jeong OC. Aptamer Affinity-Bead Mediated Capture and Displacement of Gram-Negative Bacteria Using Acoustophoresis. Micromachines (Basel) 2019; 10:mi10110770. [PMID: 31718045 PMCID: PMC6915462 DOI: 10.3390/mi10110770] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 11/05/2019] [Accepted: 11/09/2019] [Indexed: 02/07/2023]
Abstract
Here, we report a simple and effective method for capturing and displacement of gram-negative bacteria using aptamer-modified microbeads and acoustophoresis. As acoustophoresis allows for simultaneous washing and size-dependent separation in continuous flow mode, we efficiently obtained gram-negative bacteria that showed high affinity without any additional washing steps. The proposed device has a simple and efficient channel design, utilizing a long, square-shaped microchannel that shows excellent separation performance in terms of the purity, recovery, and concentration factor. Microbeads (10 µm) coated with the GN6 aptamer can specifically bind gram-negative bacteria. After incubation of bacteria culture sample with aptamer affinity bead, gram-negative bacteria-bound microbeads, and other unbound/contaminants can be separated by size with high purity and recovery. The device demonstrated excellent separation performance, with high recovery (up to 98%), high purity (up to 99%), and a high-volume rate (500 µL/min). The acoustophoretic separation performances were conducted using 5 Gram-negative bacteria and 5 Gram-positive bacteria. Thanks to GN6 aptamer’s binding affinity, aptamer affinity bead also showed binding affinity to multiple strains of gram-negative bacteria, but not to gram-positive bacteria. GN6 coated bead can capture Gram-negative bacteria but not Gram-positive bacteria. This study may present a different perspective in the field of early diagnosis in bacterial infectious diseases. In addition to detecting living bacteria or bacteria-derived biomarkers, this protocol can be extended to monitoring the contamination of water resources and may aid quick responses to bioterrorism and pathogenic bacterial infections.
Collapse
Affiliation(s)
- SangWook Lee
- PCL Incorporated, Seoul 08510, Korea;
- Correspondence: (S.W.L.); (O.C.J.); Tel.: +82-2-2244-3901 (S.W.L.); +82-55-320-3785 (O.C.J.)
| | - Byung Woo Kim
- Institute of Digital Anti-Aging Health Care, Inje University, Gimhea 50834, Korea;
| | - Hye-Su Shin
- Department of Chemistry, Sungyunkwan University, Suwon 16419, Korea; (H.-S.S.); (D.-K.L.)
| | - Anna Go
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Korea; (A.G.); (M.-H.L.)
| | - Min-Ho Lee
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Korea; (A.G.); (M.-H.L.)
| | - Dong-Ki Lee
- Department of Chemistry, Sungyunkwan University, Suwon 16419, Korea; (H.-S.S.); (D.-K.L.)
| | - Soyoun Kim
- PCL Incorporated, Seoul 08510, Korea;
- Department of Biomedical Engineering, Dongguk University, Seoul 10326, Korea
| | - Ok Chan Jeong
- Institute of Digital Anti-Aging Health Care, Inje University, Gimhea 50834, Korea;
- Department of Biomedical Engineering, Inje University, Gimhea 50834, Korea
- Correspondence: (S.W.L.); (O.C.J.); Tel.: +82-2-2244-3901 (S.W.L.); +82-55-320-3785 (O.C.J.)
| |
Collapse
|
21
|
Ahn HS, Kim BW, Park Y, Ki M. Trends of sarcopenia and physical activity in elderly Koreans using KNHANES 2007-2017. Eur J Public Health 2019. [DOI: 10.1093/eurpub/ckz187.031] [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: 11/12/2022] Open
Abstract
Abstract
Background
Sarcopenia is one of risk factors for prevalence of chronic diseases which is associated with aging. Distribution of sarcopenia in Korea is important because Korea is one of the most rapid countries in population aging. This study aimed to understand trends in PA in elderly Koreans (≥65 years of age) and identify the proportion of sarcopenia in elderly Koreans based on a reference cutoff value of handgrip strength (28.6kg for men and 16.4kg for women).
Methods
This study was performed using data from Korea National Health and Nutrition Examination Survey (KNHANES) between 2007-2017. Physical activity on walking (2007-2017), aerobic exercise (2014-2017), and muscle strength (2007-2017) were analyzed to understand trends of physical activity participation in elderly Koreans. Furthermore, using handgrip strength data from KNHANES (2014-2017), the study examined how sarcopenia has distributed in elderly in Korea.
Results
The proportion of elderly Koreans engaged in walking decreased from 46.8% (age standardized) in 2007 to 35.7% in 2017, and the proportion of elderly Koreans engaged in aerobic exercise decreased 41.1% in 2014 to 29.4% in 2017. Even though, the proportion of elderly Koreans engaged in muscle strength increased from 11.6% in 2007 to 17.5% in 2017, the proportion of sarcopenia in elderly men increased from 22.6% in 2014 to 29.3% in 2017 and the proportion of sarcopenia in elderly women increased from 19.3% in 2014 to 30.1% in 2017.
Conclusions
During the past 10 years, the participation in muscle strength has increased, while the participation in walking and aerobic exercise has decreased in elderly Koreans. Nevertheless, the proportion of sarcopenia in elderly Koreans has increased. This analysis provides evidence of necessity of public health efforts to implement sarcopenia reduction interventions and examine the correlation between sarcopenia and physical activity pattern in elderly Koreans.
Key messages
Although the participation of physical activity has decreased, the participation of muscle strength has increased in elderly Koreans (≥65 years of age). The increased proportion of sarcopenia in elderly Koreans showed the necessity of new public health intervention to reduce sarcopenia in spite of growing trends of muscle strength in elderly Koreans.
Collapse
Affiliation(s)
- H S Ahn
- Cancer Control and Population Health, Graduate School of Cancer Science and Policy, National Cancer Center Korea, Goyang-si, Gyeonggi-do, South Korea
| | - B W Kim
- Cancer Control and Population Health, Graduate School of Cancer Science and Policy, National Cancer Center Korea, Goyang-si, Gyeonggi-do, South Korea
| | - Y Park
- Cancer Control and Population Health, Graduate School of Cancer Science and Policy, National Cancer Center Korea, Goyang-si, Gyeonggi-do, South Korea
| | - Moran Ki
- Cancer Control and Population Health, Graduate School of Cancer Science and Policy, National Cancer Center Korea, Goyang-si, Gyeonggi-do, South Korea
| |
Collapse
|
22
|
Park C, Lee H, Hong SH, Kim JH, Park SK, Jeong JW, Kim GY, Hyun JW, Yun SJ, Kim BW, Kim WJ, Choi YH. Protective effect of diphlorethohydroxycarmalol against oxidative stress-induced DNA damage and apoptosis in retinal pigment epithelial cells. Cutan Ocul Toxicol 2019; 38:298-308. [PMID: 31060395 DOI: 10.1080/15569527.2019.1613425] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Purpose: Reactive oxygen species (ROS) contribute to the onset and progression of disease pathogenesis in a variety of organs, including age-related macular degeneration (AMD). Diphlorethohydroxycarmalol (DPHC), a phlorotannin compound, is one of the major components of the brown alga Ishige okamurae Yendo, and has been shown to have strong antioxidant capacity. The purpose of this study was to evaluate the protective effects of DPHC against oxidative stress (hydrogen peroxide, H2O2)-induced DNA damage and apoptosis in cultured ARPE19 retinal pigment epithelial (RPE) cells. Materials and methods: Cell viability was assessed by 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyltetrazolium bromide assay. Intracellular ROS generation was measured by flow cytometer using 2',7'-dichlorofluorescin diacetate. The magnitude of apoptosis was measured by flow cytometry using the annexin V/propidium iodide double staining. DNA damage was evaluated by DNA fragmentation assay, comet assay and 8-hydroxy-2'-deoxyguanosine (8-OHdG) analysis. To observe the mitochondrial membrane potential, 5,5',6,6'-tetrachloro-1,1',3,3'-tetraethyl-imidacarbocyanine iodide staining was performed. In order to identify the underling mechanism of DPHC against H2O2-induced cellular alteration, we performed immune blotting. Results: The results of this study showed that the decreased survival rate brought about by H2O2 could be attributed to the induction of DNA damage and apoptosis accompanied by the increased production of ROS, which was remarkably reversed by DPHC. In addition, the loss of H2O2-induced mitochondrial membrane potential was significantly attenuated in the presence of DPHC. The inhibitory effect of DPHC on H2O2-induced apoptosis was associated with a reduced Bax/Bcl-2 ratio, the protection of the activation of caspase-9 and -3 and the inhibition of poly (ADP-ribose) polymerase cleavage, which was associated with the blockage of cytochrome c release to the cytoplasm. Conclusions: Our data proved that DPHC protects ARPE19 cells against H2O2-induced DNA damage and apoptosis by scavenging ROS and thus suppressing the mitochondrial-dependent apoptosis pathway. Therefore, this study suggests that DPHC has the therapeutic potential to prevent AMD by inhibiting oxidative stress-induced injury in RPE cells.
Collapse
Affiliation(s)
- Cheol Park
- a Department of Molecular Biology, College of Natural Sciences, Dong-eui University , Busan , Republic of Korea
| | - Hyesook Lee
- b Department of Biochemistry, College of Korean Medicine, Dong-eui University , Busan , Republic of Korea.,c Anti-Aging Research Center, Dong-eui University , Busan , Republic of Korea
| | - Su Hyun Hong
- b Department of Biochemistry, College of Korean Medicine, Dong-eui University , Busan , Republic of Korea.,c Anti-Aging Research Center, Dong-eui University , Busan , Republic of Korea
| | - Jeong-Hwan Kim
- d Research Team, BGN CARE Co., Ltd., BGN Eye Clinic , Busan , Republic of Korea
| | - Seh-Kwang Park
- d Research Team, BGN CARE Co., Ltd., BGN Eye Clinic , Busan , Republic of Korea
| | - Ji-Won Jeong
- d Research Team, BGN CARE Co., Ltd., BGN Eye Clinic , Busan , Republic of Korea
| | - Gi-Young Kim
- e Department of Marine Life Sciences, School of Marine Biomedical Sciences, Jeju National University , Jeju , Republic of Korea
| | - Jin Won Hyun
- f Department of Biochemistry, School of Medicine, Jeju National University , Jeju , Republic of Korea
| | - Seok Joong Yun
- g Department of Urology, College of Medicine, Chungbuk National University , Cheongju , Republic of Korea
| | - Byung Woo Kim
- h Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-eui University , Busan , Republic of Korea
| | - Wun-Jae Kim
- g Department of Urology, College of Medicine, Chungbuk National University , Cheongju , Republic of Korea
| | - Yung Hyun Choi
- b Department of Biochemistry, College of Korean Medicine, Dong-eui University , Busan , Republic of Korea.,c Anti-Aging Research Center, Dong-eui University , Busan , Republic of Korea
| |
Collapse
|
23
|
Park C, Cha HJ, Hong SH, Kim GY, Kim S, Kim HS, Kim BW, Jeon YJ, Choi YH. Protective Effect of Phloroglucinol on Oxidative Stress-Induced DNA Damage and Apoptosis through Activation of the Nrf2/HO-1 Signaling Pathway in HaCaT Human Keratinocytes. Mar Drugs 2019; 17:md17040225. [PMID: 31013932 PMCID: PMC6520966 DOI: 10.3390/md17040225] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 04/08/2019] [Accepted: 04/11/2019] [Indexed: 12/28/2022] Open
Abstract
Phloroglucinol (PG) is a component of phlorotannins, which are abundant in marine brown alga species. Recent studies have shown that PG is beneficial in protecting cells from oxidative stress. In this study, we evaluated the protective efficacy of PG in HaCaT human skin keratinocytes stimulated with oxidative stress (hydrogen peroxide, H2O2). The results showed that PG significantly inhibited the H2O2-induced growth inhibition in HaCaT cells, which was associated with increased expression of heme oxygenase-1 (HO-1) by the activation of nuclear factor erythroid 2-related factor-2 (Nrf2). PG remarkably reversed H2O2-induced excessive ROS production, DNA damage, and apoptosis. Additionally, H2O2-induced mitochondrial dysfunction was related to a decrease in ATP levels, and in the presence of PG, these changes were significantly impaired. Furthermore, the increases of cytosolic release of cytochrome c and ratio of Bax to Bcl-2, and the activation of caspase-9 and caspase-3 by the H2O2 were markedly abolished under the condition of PG pretreatment. However, the inhibition of HO-1 function using zinc protoporphyrin, a HO-1 inhibitor, markedly attenuated these protective effects of PG against H2O2. Overall, our results suggest that PG is able to protect HaCaT keratinocytes against oxidative stress-induced DNA damage and apoptosis through activating the Nrf2/HO-1 signaling pathway.
Collapse
Affiliation(s)
- Cheol Park
- Department of Molecular Biology, College of Natural Sciences, Dong-eui University, Busan 47340, Korea.
| | - Hee-Jae Cha
- Department of Parasitology and Genetics, College of Medicine, Kosin University, Busan 49267, Korea.
| | - Su Hyun Hong
- Department of Biochemistry, Dong-eui University College of Korean Medicine, Busan 47227, Korea.
- Anti-Aging Research Center, Dong-eui University, Busan 47227, Korea.
| | - Gi-Young Kim
- Department of Marine Life Sciences, School of Marine Biomedical Sciences, Jeju National University, Jeju 63243, Korea.
| | - Suhkmann Kim
- Department of Chemistry, College of Natural Sciences, Pusan National University, Busan 46241, Korea.
| | - Heui-Soo Kim
- Department of Biological Sciences, College of Natural Sciences, Pusan National University, Busan 46241, Korea.
| | - Byung Woo Kim
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-eui University, Busan 47340, Korea.
| | - You-Jin Jeon
- Department of Marine Life Sciences, School of Marine Biomedical Sciences, Jeju National University, Jeju 63243, Korea.
| | - Yung Hyun Choi
- Department of Biochemistry, Dong-eui University College of Korean Medicine, Busan 47227, Korea.
- Anti-Aging Research Center, Dong-eui University, Busan 47227, Korea.
| |
Collapse
|
24
|
Kim S, Kim BW, Prizmic VP, Oh E, Yu V, Evans B, Kim D, Garza LA. Simple cell culture media expansion of primary mouse keratinocytes. J Dermatol Sci 2019; 93:135-138. [PMID: 30692040 DOI: 10.1016/j.jdermsci.2018.12.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 11/29/2018] [Accepted: 12/17/2018] [Indexed: 01/21/2023]
Affiliation(s)
- Sooah Kim
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, MD, 21287, United States
| | - Byung Woo Kim
- Department of Pathology, Division of Neuropathology, Johns Hopkins School of Medicine, Baltimore, MD, 21287, United States
| | - Vicky P Prizmic
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, MD, 21287, United States
| | - Eugene Oh
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, MD, 21287, United States
| | - Victoria Yu
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, MD, 21287, United States
| | - Benjamin Evans
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, MD, 21287, United States
| | - Dongwon Kim
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, MD, 21287, United States.
| | - Luis A Garza
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, MD, 21287, United States.
| |
Collapse
|
25
|
Park C, Choi EO, Kim GY, Hwang HJ, Kim BW, Yoo YH, Park HT, Choi YH. Protective Effect of Baicalein on Oxidative Stress-induced DNA Damage and Apoptosis in RT4-D6P2T Schwann Cells. Int J Med Sci 2019; 16:8-16. [PMID: 30662323 PMCID: PMC6332490 DOI: 10.7150/ijms.29692] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 10/31/2018] [Indexed: 01/20/2023] Open
Abstract
Background: Due to its high antioxidant activity, baicalein, a kind of flavonoid present in Radical Scutellariae, has various pharmacological effects. However, the protective effect against oxidative stress in Schwann cells, which plays an important role in peripheral neuropathy, has not yet been studied. In this study, the effects of baicalein on hydrogen peroxide (H2O2)-induced DNA damage and apoptosis in RT4-D6P2T Schwann cells were evaluated. Methods: Cell viability assay was performed using MTT assay and colony formation assay. Apoptosis was assessed by flow cytometry analysis and DNA fragmentation assay. The effects on DNA damage and ATP content were analyzed by comet method and luminometer. In addition, changes in protein expression were observed by Western blotting. Results: Our results show that baicalein significantly inhibits H2O2-induced cytotoxicity through blocking reactive oxygen species (ROS) generation. We also demonstrate that baicalein is to block H2O2-induced DNA damage as evidenced by inhibition of DNA tail formation and γH2AX phosphorylation. Moreover, baicalein significantly attenuated H2O2-induced apoptosis and mitochondrial dysfunction, and restored inhibition of ATP production. The suppression of apoptosis by baicalein in H2O2-stimulated cells was associated with reduction of increased Bax/Bcl-2 ratio, activation of caspase-9 and -3, and degradation of poly (ADP-ribose) polymerase. Conclusions: These results demonstrate that baicalein eliminates H2O2-induced apoptosis through conservation of mitochondrial function by the removal of ROS. Therefore, it is suggested that baicalein protects Schwann cells from oxidative stress, and may be beneficial for the prevention and treatment of peripheral neuropathy induced by oxidative stress.
Collapse
Affiliation(s)
- Cheol Park
- Department of Molecular Biology, College of Natural Sciences, Dong-eui University, Busan 47340, Republic of Korea
| | - Eun Ok Choi
- Anti-Aging Research Center, Dong-eui University, Busan 47340, Republic of Korea.,Department of Biochemistry, Dong-eui University College of Korean Medicine, Busan 47227, Republic of Korea
| | - Gi-Young Kim
- Department of Marine Life Sciences, Jeju National University, Jeju 63243, Republic of Korea
| | - Hye-Jin Hwang
- Department of Food and Nutrition, College of Nursing, Healthcare Sciences & Human Ecology, Dong-eui University, Busan 47340, Republic of Korea
| | - Byung Woo Kim
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dong-eui University, Busan 47340, Republic of Korea
| | - Young Hyun Yoo
- Department of Anatomy and Cell Biology, Mitochondria Hub Regulation Center, College of Medicine, Dong-A University, Busan 49201, Republic of Korea
| | - Hwan Tae Park
- Department of Physiology, Peripheral Neuropathy Research Center, College of Medicine, Dong-A University, Busan 49201, Republic of Korea
| | - Yung Hyun Choi
- Anti-Aging Research Center, Dong-eui University, Busan 47340, Republic of Korea.,Department of Biochemistry, Dong-eui University College of Korean Medicine, Busan 47227, Republic of Korea
| |
Collapse
|
26
|
Lee HH, Jeong JW, Hong SH, Park C, Kim BW, Choi YH. Diallyl Trisulfide Suppresses the Production of Lipopolysaccharide-induced Inflammatory Mediators in BV2 Microglia by Decreasing the NF-κB Pathway Activity Associated With Toll-like Receptor 4 and CXCL12/CXCR4 Pathway Blockade. J Cancer Prev 2018; 23:134-140. [PMID: 30370258 PMCID: PMC6197846 DOI: 10.15430/jcp.2018.23.3.134] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 09/14/2018] [Accepted: 09/16/2018] [Indexed: 01/05/2023] Open
Abstract
Background Diallyl trisulfide (DATS), a garlic-derived organosulfuric compound, has been documented for potential anti-inflammatory effects. However, the mechanism in microglia remains unknown. In this study, we investigated the anti-inflammatory effects of DATS in lipopolysaccharide (LPS)-stimulated BV2 microglial cells. Methods The effects of DATS on LPS-induced pro-inflammatory mediators such as nitric oxide (NO) and prostaglandin E2 (PGE2) were assessed under conditions not in the cytotoxicity of DATS. The protein expression of inflammation regulatory genes was measured by Western blot analysis. Results DATS significantly inhibited the LPS-induced secretion of NO and PGE2, which was associated with the suppression of their regulatory genes, inducible NO synthase and COX-2. DATS had been shown to inhibit nuclear translocation of NF-κB by destroying the degradation and phosphorylation of IκB-α inhibitors in the cytoplasm. In addition, DATS effectively inhibited the expression of LPS-induced toll-like receptor 4 (TLR4) and myeloid differentiation factor 88. Furthermore, DATS markedly reduced the LPS-induced expression of chemokine (CXC motif) ligand (CXCL) 12 and CXC receptor (CXCR) 4, demonstrating its capacity to block chemo-attractive activity. Conclusions These results indicate that DATS inhibits the activation of the CXCL12/CXCR4 axis associated with antagonizing effect on TLR4 and blocks NF-κB signaling, thus demonstrating anti-inflammatory effects against LPS stimulation.
Collapse
Affiliation(s)
- Hye Hyeon Lee
- Anti-Aging Research Center and Blue Bio Industry RIC, Dong-Eui University, Busan, Korea
| | - Jin-Woo Jeong
- Freshwater Bioresources Utilization Bureau, Nakdonggang National Institute of Biological Resources, Sangju, Korea
| | - Su Hyun Hong
- Anti-Aging Research Center and Blue Bio Industry RIC, Dong-Eui University, Busan, Korea.,Department of Biochemistry, Dong-Eui University College of Korean Medicine, Busan, Korea
| | - Cheol Park
- Department of Molecular Biology, College of Natural Sciences, Dong-Eui University, Busan, Korea
| | - Byung Woo Kim
- Anti-Aging Research Center and Blue Bio Industry RIC, Dong-Eui University, Busan, Korea.,Department of Life Science and Biotechnology, College of Engineering, Dong-Eui University, Busan, Korea
| | - Yung Hyun Choi
- Anti-Aging Research Center and Blue Bio Industry RIC, Dong-Eui University, Busan, Korea.,Department of Biochemistry, Dong-Eui University College of Korean Medicine, Busan, Korea
| |
Collapse
|
27
|
Ghassemi Nejad J, Sung KI, Lee BH, Peng JL, Kim JY, Chemere B, Oh SM, Kim MJ, Kim SC, Kim BW. 3 Comparison of hair cortisol levels and body temperature response prior to and post heat stress and water deprivation in Holstein dairy cows. J Anim Sci 2018. [DOI: 10.1093/jas/sky073.002] [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: 11/15/2022] Open
Affiliation(s)
- J Ghassemi Nejad
- Institute of Animal Resources, Kangwon National University, Chuncheon, Korea, Republic of (South)
| | - K I Sung
- College of Animal Life Sciences, Kangwon National University, Chuncheon, Korea, Republic of (South)
| | - B H Lee
- College of Animal Life Sciences, Kangwon National University, Chuncheon, Korea, Republic of (South)
| | - J L Peng
- College of Animal Life Sciences, Kangwon National University, Chuncheon, Korea, Republic of (South)
| | - J Y Kim
- College of Animal Life Sciences, Kangwon National University, Chuncheon, Korea, Republic of (South)
| | - B Chemere
- College of Animal Life Sciences, Kangwon National University, Chuncheon, Korea, Republic of (South)
| | - S M Oh
- College of Animal Life Sciences, Kangwon National University, Chuncheon, Korea, Republic of (South)
| | - M J Kim
- Institute of Animal Resources, Kangwon National University, Chuncheon, Korea, Republic of (South)
| | - S C Kim
- College of Animal Life Sciences, Kangwon National University, Chuncheon, Korea, Republic of (South)
| | - B W Kim
- College of Animal Life Sciences, Kangwon National University, Chuncheon, Korea, Republic of (South)
| |
Collapse
|
28
|
Han MH, Kim HJ, Jeong JW, Park C, Kim BW, Choi YH. Inhibition of Adipocyte Differentiation by Anthocyanins Isolated from the Fruit of Vitis coignetiae Pulliat is Associated with the Activation of AMPK Signaling Pathway. Toxicol Res 2018; 34:13-21. [PMID: 29371997 PMCID: PMC5776908 DOI: 10.5487/tr.2018.34.1.013] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [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: 09/10/2017] [Revised: 11/23/2017] [Accepted: 12/07/2017] [Indexed: 12/31/2022] Open
Abstract
Anthocyanins are naturally occurring water-soluble polyphenolic pigments in plants that have been shown to protect against cardiovascular diseases, and certain cancers, as well as other chronic human disorders. However, the anti-obesity effects of anthocyanins are not fully understood. In this study, we investigated the effects of anthocyanins isolated from the fruit of Vitis coignetiae Pulliat on the adipogenesis of 3T3-L1 preadipocytes. Our data indicated that anthocyanins attenuated the terminal differentiation of 3T3-L1 preadipocytes, as confirmed by a decrease in the number of lipid droplets, lipid content, and triglyceride production. During this process, anthocyanins effectively enhanced the activation of the AMP-activated protein kinase (AMPK); however, this phenomenon was inhibited by the co-treatment of compound C, an inhibitor of AMPK. Anthocyanins also inhibited the expression of adipogenic transcription factors, including peroxisome proliferator-activated receptor-γ, CCAAT/enhancer-binding protein a and b, and sterol regulatory element-binding protein-1c. In addition, anthocyanins were found to potently inhibit the expression of adipocyte-specific genes, including adipocyte fatty acid-binding protein, leptin, and fatty acid synthase. These results indicate that anthocyanins have potent anti-obesity effects due to the inhibition of adipocyte differentiation and adipogenesis, and thus may have applications as a potential source for an anti-obesity functional food agent.
Collapse
Affiliation(s)
- Min Ho Han
- Department of Applied Research, National Marine Biodiversity Institute of Korea, Seocheon, Korea
| | - Hong Jae Kim
- Open Laboratory for Muscular and Skeletal Disease, and Department of Biochemistry, Dongeui University College of Korean Medicine, Busan, Korea.,Anti-Aging Research Center, Dongeui University, Busan, Korea
| | - Jin-Woo Jeong
- Open Laboratory for Muscular and Skeletal Disease, and Department of Biochemistry, Dongeui University College of Korean Medicine, Busan, Korea.,Anti-Aging Research Center, Dongeui University, Busan, Korea
| | - Cheol Park
- Department of Molecular Biology, College of Natural Sciences, Dongeui University, Busan, Korea
| | - Byung Woo Kim
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dongeui University, Busan, Korea
| | - Yung Hyun Choi
- Open Laboratory for Muscular and Skeletal Disease, and Department of Biochemistry, Dongeui University College of Korean Medicine, Busan, Korea.,Anti-Aging Research Center, Dongeui University, Busan, Korea
| |
Collapse
|
29
|
Kwon DH, Cha HJ, Choi EO, Leem SH, Kim GY, Moon SK, Chang YC, Yun SJ, Hwang HJ, Kim BW, Kim WJ, Choi YH. Schisandrin A suppresses lipopolysaccharide-induced inflammation and oxidative stress in RAW 264.7 macrophages by suppressing the NF-κB, MAPKs and PI3K/Akt pathways and activating Nrf2/HO-1 signaling. Int J Mol Med 2017; 41:264-274. [PMID: 29115385 PMCID: PMC5746320 DOI: 10.3892/ijmm.2017.3209] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [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: 05/02/2017] [Accepted: 10/19/2017] [Indexed: 12/15/2022] Open
Abstract
Schisandrin A is a bioactive lignan occurring in the fruits of plants of the Schisandra genus that have traditionally been used in Korea for treating various inflammatory diseases. Although the anti-inflammatory and antioxidant effects of lignan analogues similar to schisandrin A have been reported, the underlying molecular mechanisms have remained elusive. In the present study, schisandrin A significantly suppressed the lipopolysaccharide (LPS)-induced production of the key pro-inflammatory mediators nitric oxide (NO) and prostaglandin E2 by suppressing the expression of inducible NO synthase and cyclooxygenase-2 at the mRNA and protein levels in RAW 264.7 macrophages. Furthermore, schisandrin A was demonstrated to reduce the LPS-induced secretion of pro-inflammatory cytokines, including tumor necrosis factor-α and interleukin-1β; this was accompanied by a simultaneous decrease in the respective mRNA and protein levels in the macrophages. In addition, the LPS- induced translocation of nuclear factor-κB (NF-κB), as well as activation of mitogen-activated protein kinases (MAPKs) and phosphatidylinositol‑3 kinase (PI3K)/Akt pathways were inhibited by schisandrin A. Furthermore, schisandrin A significantly diminished the LPS-stimulated accumulation of intracellular reactive oxygen species, and effectively enhanced the expression of NF erythroid 2-related factor 2 (Nrf2) and heme oxygenase-1 (HO-1). These results suggested that schisandrin A has a protective effect against LPS-induced inflammatory and oxidative responses in RAW 264.7 cells by inhibiting the NF-κB, MAPK and PI3K/Akt pathways; these effects are mediated, at least in part, by the activation of the Nrf2/HO-1 pathway. Based on these results, it is concluded that schisandrin A may have therapeutic potential for treating inflammatory and oxidative disorders caused by over-activation of macrophages.
Collapse
Affiliation(s)
- Da Hye Kwon
- Department of Biochemistry, Dongeui University College of Korean Medicine, Busan 47227, Republic of Korea
| | - Hee-Jae Cha
- Department of Parasitology and Genetics, Kosin University College of Medicine, Busan 49267, Republic of Korea
| | - Eun Ok Choi
- Department of Biochemistry, Dongeui University College of Korean Medicine, Busan 47227, Republic of Korea
| | - Sun-Hee Leem
- Department of Biological Science, College of Natural Sciences, Dong-A University, Busan 49315, Republic of Korea
| | - Gi-Young Kim
- Laboratory of Immunobiology, Department of Marine Life Sciences, Jeju National University, Jeju 63243, Republic of Korea
| | - Sung-Kwon Moon
- Department of Food and Nutrition, College of Biotechnology and Natural Resource, Chung-Ang University, Anseong 17546, Republic of Korea
| | - Young-Chae Chang
- Research Institute of Biomedical Engineering and Department of Medicine, Catholic University of Daegu School of Medicine, Daegu 42472, Republic of Korea
| | - Seok-Joong Yun
- Personalized Tumor Engineering Research Center, Department of Urology, Chungbuk National University College of Medicine, Cheongju 28644, Republic of Korea
| | - Hye Jin Hwang
- Department of Food and Nutrition, College of Nursing, Healthcare Sciences and Human Ecology, Dongeui University, Busan 47340, Republic of Korea
| | - Byung Woo Kim
- Department of Life Science and Biotechnology, College of Engineering, Dongeui University, Busan 47340, Republic of Korea
| | - Wun-Jae Kim
- Personalized Tumor Engineering Research Center, Department of Urology, Chungbuk National University College of Medicine, Cheongju 28644, Republic of Korea
| | - Yung Hyun Choi
- Department of Biochemistry, Dongeui University College of Korean Medicine, Busan 47227, Republic of Korea
| |
Collapse
|
30
|
Han MH, Jeong JS, Jeong JW, Choi SH, Kim SO, Hong SH, Park C, Kim BW, Choi YH. Ethanol extracts of Aster yomena (Kitam.) Honda inhibit adipogenesis through the activation of the AMPK signaling pathway in 3T3-L1 preadipocytes. Drug Discov Ther 2017; 11:281-287. [PMID: 29021504 DOI: 10.5582/ddt.2017.01046] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The leaves of Aster yomena (Kitam.) Honda have long been used as a traditional herb for treating disorders including coughs, asthma, and insect bites. According to recent studies, A. yomena leaf extracts have several pharmacological properties, including anti-inflammatory, antioxidant, and anti-asthmatic activities. However, little information is available regarding their anti-obesity effect. In this study, we investigated the inhibitory effect of the ethanol extracts of A. yomena leaves (EEAY) on adipocyte differentiation and adipogenesis using 3T3-L1 preadipocytes. When 3T3-L1 preadipocytes were treated with various concentrations of EEAY (ranging from non-toxic), the number of lipid droplets, lipid content, and triglyceride production, the typical characteristics of adipocytes, were suppressed in a concentration-dependent manner. During this process, EEAY significantly reduced the expression of adipogenic transcription factors, including peroxisome proliferator-activated receptor-γ, CCAAT/enhancer-binding protein α and β, and sterol regulatory element-binding protein-1c. In addition, EEAY was also found to potently inhibit the expression of adipocyte-specific genes, including adipocyte fatty acid-binding protein and leptin. In particular, EEAY treatment effectively enhanced the activation of the AMP-activated protein kinase (AMPK) signaling pathway; however, the co-treatment with compound C, an inhibitor of AMPK, significantly restored the EEAY-induced inhibition of pro-adipogenic transcription factors and adipocyte-specific genes. These results indicate that EEAY may exert an anti-obesity effect by controlling the AMPK signaling pathway, suggesting that the leaf extract of A. yomena may be a potential anti-obesity agent.
Collapse
Affiliation(s)
- Min Ho Han
- National Marine Biodiversity Institute of Korea
| | - Ji-Suk Jeong
- Gurye Wild Flower Institute and Gurye-gun Agricultural Center
| | - Jin-Woo Jeong
- Anti-Aging Research Center, Dongeui University.,Open Laboratory for Muscular and Skeletal Disease, and Department of Biochemistry, Dongeui University College of Korean Medicine
| | | | - Sung Ok Kim
- Department of Food Science & Biotechnology, College of Engineering, Kyungsung University
| | - Su Hyun Hong
- Open Laboratory for Muscular and Skeletal Disease, and Department of Biochemistry, Dongeui University College of Korean Medicine
| | - Cheol Park
- Department of Molecular Biology, College of Natural Sciences, Dongeui University
| | - Byung Woo Kim
- Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dongeui University
| | - Yung Hyun Choi
- Anti-Aging Research Center, Dongeui University.,Biopharmaceutical Engineering Major, Division of Applied Bioengineering, College of Engineering, Dongeui University
| |
Collapse
|
31
|
Kim JH, Kwon HJ, Kim BW. Protective Effect of 4-(3,4-Dihydroxyphenyl)-3-Buten-2-One from Phellinus linteus on Naproxen-Induced Gastric Antral Ulcers in Rats. J Microbiol Biotechnol 2017; 26:823-8. [PMID: 26767575 DOI: 10.4014/jmb.1511.11024] [Citation(s) in RCA: 2] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
The present study investigated the protective effect of naturally purified 4-(3,4- dihydroxyphenyl)-3-buten-2-one (DHP) from Phellinus linteus against naproxen-induced gastric antral ulcers in rats. To verify the protective effect of DHP on naproxen-induced gastric antral ulcers, various doses (1, 5, and 10 μg/kg) of DHP were pretreated for 3 days, and then gastric damage was caused by 80 mg/kg naproxen applied for 3 days. DHP prevented naproxen-induced gastric antral ulcers in a dose-dependent manner. In particular, 10 μg/kg DHP showed the best protective effect against naproxen-induced gastric antral ulcers. Moreover, DHP significantly attenuated the naproxen-induced lipid peroxide level in gastric mucosa and increased the activities of radical scavenging enzymes, such as superoxide dismutase, catalase, and glutathione peroxidase, in a dose-dependent manner. A histological examination clearly demonstrated that the gastric antral ulcer induced by naproxen nearly disappeared after the pretreatment of DHP. These results suggest that DHP can inhibit naproxen-induced gastric antral ulcers through prevention of lipid peroxidation and activation of radical scavenging enzymes.
Collapse
Affiliation(s)
- Jeong-Hwan Kim
- Blue-Bio Industry RIC, Dong-Eui University, Busan 47340, Republic of Korea
| | - Hyun Ju Kwon
- Blue-Bio Industry RIC, Dong-Eui University, Busan 47340, Republic of Korea.,Department of Life Science and Biotechnology, Dong-Eui University, Busan 47340, Republic of Korea
| | - Byung Woo Kim
- Blue-Bio Industry RIC, Dong-Eui University, Busan 47340, Republic of Korea.,Department of Life Science and Biotechnology, Dong-Eui University, Busan 47340, Republic of Korea
| |
Collapse
|
32
|
Kang JS, Kim GY, Kim BW, Choi YH. Antioxidative effects of diallyl trisulfide on hydrogen peroxide-induced cytotoxicity through regulation of nuclear factor-E2-related factor-mediated thioredoxin reductase 1 expression in C2C12 skeletal muscle myoblast cells. Gen Physiol Biophys 2017; 36:129-139. [PMID: 28218609 DOI: 10.4149/gpb_2016042] [Citation(s) in RCA: 2] [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] [Received: 06/30/2016] [Accepted: 09/11/2016] [Indexed: 11/08/2022]
Abstract
Diallyl trisulfide (DATS) is one of the major sulfur-containing compounds in garlic oil. In this study, we analyzed the effects of DATS against hydrogen peroxide (H2O2)-induced oxidative stress in C2C12 myoblasts. DATS preconditioning significantly attenuated H2O2-induced growth inhibition and DNA damage, as well as apoptosis by decreasing the generation of ROS. Treatment with DATS alone effectively upregulated the expression of nuclear factor-erythroid 2-related factor 2 (Nrf2) and thioredoxin reductase 1 (TrxR1), which was associated with the increased phosphorylation of Nrf2. However, the protective effects of DATS against H2O2-induced growth reduction and ROS accumulation were significantly abolished by auranofin, an inhibitor of TrxR activity. Moreover, DATS-mediated phosphorylation of Nrf2 and induction of TrxR1 were markedly reduced by genetic silencing of Nrf2. DATS treatment also induced the phosphorylation extracellular signal-regulating kinase (ERK), and analysis using specific inhibitors of cellular signaling pathways demonstrated that only ERK activation was involved in Nrf2 phosphorylation and TrxR1 induction. In addition, the cytoprotective potentials were abrogated in C2C12 cells pretreated with an ERK specific inhibitor. The results demonstrate that DATS protects against oxidative stress-induced DNA damage and apoptosis in C2C12 cells in part through the activation of Nrf2-mediated TrxR1 induction via the ERK signaling pathway.
Collapse
Affiliation(s)
- Ji Sook Kang
- Anti-Aging Research Center and Blue-Bio Industry RIC, Dongeui University, 176 Eomgwangno Busanjin-gu, Busan 614-714, Republic of Korea.
| | | | | | | |
Collapse
|
33
|
Kang HJ, Jeong JS, Park NJ, Go GB, Kim SO, Park C, Kim BW, Hong SH, Choi YH. An ethanol extract of Aster yomena (Kitam.) Honda inhibits lipopolysaccharide-induced inflammatory responses in murine RAW 264.7 macrophages. Biosci Trends 2017; 11:85-94. [PMID: 28179600 DOI: 10.5582/bst.2016.01217] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Aster yomena (Kitam.) Honda has been widely used as a traditional herbal medicine for centuries to treat cough, asthma, insect bites, etc. Recent reports indicate that A. yomena possesses a wide spectrum of pharmacological activities; however, few experiments have described its anti-inflammatory properties. The present study examined the anti-inflammatory effects of an ethanol extract of A. yomena leaves (EEAY) on lipopolysaccharide (LPS)-stimulated murine RAW 264.7 macrophages. Treatment with EEAY significantly reduced the secretion of pro-inflammatory molecules, such as nitric oxide and interleukin-1β, in LPS-stimulated RAW 264.7 cells, without incurring any significant cytotoxicity. These protective effects were accompanied by a marked reduction in the expression of regulatory genes at the transcription level. Treatment with EEAY also inhibited the DNA-binding activity of nuclear factor-κB (NF-κB) by suppression of nuclear translocation of NF-κB and by degradation of the inhibitor of NF-κB; these effects were associated with suppression of the phosphatidylinositol 3-kinase/Akt and mitogen-activated protein kinase signaling pathways. The EEAY treatment also potently suppressed LPS-induced toll like receptor (TLR) 4 expression and attenuated the binding of LPS to the macrophage cell surface. In addition, EEAY treatment markedly inhibited LPS-induced accumulation of intracellular reactive oxygen species in RAW 264.7 macrophages. Therefore, the inhibitory effects of EEAY on LPS-stimulated inflammatory responses in RAW 264.7 macrophages were apparently associated with suppression of the TLR-mediated NF-κB signaling pathway. More work is needed to fully understand the critical role and clinical usefulness of EEAY treatment, but the findings of the present study provide some insights into the potential of EEAY as a therapeutic agent for treatment of inflammatory disorders.
Collapse
Affiliation(s)
- Hye-Joo Kang
- Department of Biochemistry, Dongeui University College of Korean Medicine
| | | | | | | | | | | | | | | | | |
Collapse
|
34
|
Saha SK, Choi HY, Kim BW, Dayem AA, Yang GM, Kim KS, Yin YF, Cho SG. KRT19 directly interacts with β-catenin/RAC1 complex to regulate NUMB-dependent NOTCH signaling pathway and breast cancer properties. Oncogene 2017; 36:332-349. [PMID: 27345400 PMCID: PMC5270332 DOI: 10.1038/onc.2016.221] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 04/19/2016] [Accepted: 05/15/2016] [Indexed: 12/21/2022]
Abstract
Studies have reported that interactions between keratins (KRTs) and other proteins initiate signaling cascades that regulate cell migration, invasion, and metastasis. In the current study, we found that expression of KRT19 was specifically high in breast cancers and significantly correlated with their invasiveness. Moreover, knockdown of KRT19 led to increased proliferation, migration, invasion, drug resistance, and sphere formation in breast cancer cells via an upregulated NOTCH signaling pathway. This was owing to reduced expression of NUMB, an inhibitory protein of the NOTCH signaling pathway. In addition, we found that KRT19 interacts with β-catenin/RAC1 complex and enhances the nuclear translocation of β-catenin. Concordantly, knockdown of KRT19 suppressed the nuclear translocation of β-catenin as well as β-catenin-mediated NUMB expression. Furthermore, modulation of KRT19-mediated regulation of NUMB and NOTCH1 expression led to the repression of the cancer stem cell properties of breast cancer patient-derived CD133high/CXCR4high/ALDH1high cancer stem-like cells (CSLCs), which showed very low KRT19 and high NOTCH1 expression. Taken together, our study suggests a novel function for KRT19 in the regulation of nuclear import of the β-catenin/RAC1 complex, thus modulating the NUMB-dependent NOTCH signaling pathway in breast cancers and CSLCs, which might bear potential clinical implications for cancer or CSLC treatment.
Collapse
Affiliation(s)
- S K Saha
- Department of Animal Biotechnology, Stem Cell & Regenerative Biotechnology and Incurable Disease Animal Model & Stem Cell Institute (IDASI), Konkuk University, Seoul, Republic of Korea
| | - H Y Choi
- Department of Animal Biotechnology, Stem Cell & Regenerative Biotechnology and Incurable Disease Animal Model & Stem Cell Institute (IDASI), Konkuk University, Seoul, Republic of Korea
| | - B W Kim
- Department of Animal Biotechnology, Stem Cell & Regenerative Biotechnology and Incurable Disease Animal Model & Stem Cell Institute (IDASI), Konkuk University, Seoul, Republic of Korea
| | - A A Dayem
- Department of Animal Biotechnology, Stem Cell & Regenerative Biotechnology and Incurable Disease Animal Model & Stem Cell Institute (IDASI), Konkuk University, Seoul, Republic of Korea
| | - G-M Yang
- Department of Animal Biotechnology, Stem Cell & Regenerative Biotechnology and Incurable Disease Animal Model & Stem Cell Institute (IDASI), Konkuk University, Seoul, Republic of Korea
| | - K S Kim
- Department of Animal Biotechnology, Stem Cell & Regenerative Biotechnology and Incurable Disease Animal Model & Stem Cell Institute (IDASI), Konkuk University, Seoul, Republic of Korea
| | - Y F Yin
- Department of Animal Biotechnology, Stem Cell & Regenerative Biotechnology and Incurable Disease Animal Model & Stem Cell Institute (IDASI), Konkuk University, Seoul, Republic of Korea
| | - S-G Cho
- Department of Animal Biotechnology, Stem Cell & Regenerative Biotechnology and Incurable Disease Animal Model & Stem Cell Institute (IDASI), Konkuk University, Seoul, Republic of Korea
| |
Collapse
|
35
|
Oh YN, Jin S, Park HJ, Kwon HJ, Kim BW. Sorbus rufopilosa Extract Exhibits Antioxidant and Anticancer Activities by Inducing Cell Cycle Arrest and Apoptosis in Human Colon Adenocarcinoma HT29 Cells. J Cancer Prev 2016; 21:249-256. [PMID: 28053959 PMCID: PMC5207609 DOI: 10.15430/jcp.2016.21.4.249] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 12/15/2016] [Accepted: 12/15/2016] [Indexed: 12/03/2022] Open
Abstract
Background Sorbus rufopilosa, a tsema rowan, is a species of the small ornamental trees in the genus Sorbus and the family Rosaceae found in East Asia. The bioactivities of S. rufopilosa have not yet been fully determined. The objective of this study is to evaluate the antioxidant and anticancer effects of ethanol extract of S. rufopilosa (EESR) and to determine the molecular mechanism of its anticancer activity in human colon carcinoma HT29 cells. Methods To examine the antioxidant activity of EESR, 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity assay was performed. Inhibitory effect of EESR on cancer cell growth and proliferation was determined by water-soluble tetrazolium salt assay. To investigate the mechanism of EESR-mediated cytotoxicity, HT29 cells were treated with various concentrations of EESR and the induction of cell cycle arrest and apoptosis was analyzed by flow cytometry, 4,6-diamidino-2-phenylindole staining, and Western blot analysis. Results EESR showed significant antioxidant activity and inhibitory effect on HT29 cell growth in a dose-dependent manner. EESR induced cell cycle arrest at G2/M phase in a dose-dependent manner by modulating cyclin B, cyclin-dependent kinase 1 (CDK1), and CDK inhibitor p21 expression. EESR-induced apoptosis was associated with the upregulation of p53, a death receptor Fas, and a pro-apoptotic protein Bax and the activation of caspase 3, 8, and 9, resulting in the degradation of PARP. Conclusions EESR possessing antioxidant activity efficiently inhibits proliferation of HT29 cells by inducing both cell cycle arrest and apoptosis. EESR may be a possible candidate for the anticancer drug development.
Collapse
Affiliation(s)
- You Na Oh
- Blue-Bio Industry Regional Innovation Center, Dong-Eui University, Busan, Korea
| | - Soojung Jin
- Blue-Bio Industry Regional Innovation Center, Dong-Eui University, Busan, Korea; Department of Life Science and Biotechnology, College of Natural Sciences and Human Ecology, Dong-Eui University, Busan, Korea
| | - Hyun-Jin Park
- Blue-Bio Industry Regional Innovation Center, Dong-Eui University, Busan, Korea
| | - Hyun Ju Kwon
- Blue-Bio Industry Regional Innovation Center, Dong-Eui University, Busan, Korea; Department of Life Science and Biotechnology, College of Natural Sciences and Human Ecology, Dong-Eui University, Busan, Korea
| | - Byung Woo Kim
- Blue-Bio Industry Regional Innovation Center, Dong-Eui University, Busan, Korea; Department of Life Science and Biotechnology, College of Natural Sciences and Human Ecology, Dong-Eui University, Busan, Korea
| |
Collapse
|
36
|
Jin S, Oh YN, Park HJ, Kwon HJ, Kim BW. Anti-oxidative and Anti-cancer Activities of Methanol Extract of Machaerium cuspidatum. ACTA ACUST UNITED AC 2016. [DOI: 10.4014/mbl.1608.08003] [Citation(s) in RCA: 2] [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: 11/01/2022]
|
37
|
Lee SH, Lee I, Kim MH, Go JS, Lee SH, Hwang HJ, Hyun SK, Kang KH, Kim BW, Kim CM, Chung KT, Lee JH. An extract ofUlmus macrocarpaimproves cellular immunity in immuno-suppressed models. Anim Cells Syst (Seoul) 2016. [DOI: 10.1080/19768354.2016.1230556] [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: 10/21/2022] Open
|
38
|
Kim JH, Jin S, Kwon HJ, Kim BW. Curcumin Blocks Naproxen-Induced Gastric Antral Ulcerations through Inhibition of Lipid Peroxidation and Activation of Enzymatic Scavengers in Rats. J Microbiol Biotechnol 2016; 26:1392-7. [DOI: 10.4014/jmb.1602.02028] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
|
39
|
Kim BW, Park BS. Robust Control for the Segway with Unknown Control Coefficient and Model Uncertainties. Sensors (Basel) 2016; 16:s16071000. [PMID: 27367696 PMCID: PMC4970050 DOI: 10.3390/s16071000] [Citation(s) in RCA: 2] [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] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Revised: 06/10/2016] [Accepted: 06/23/2016] [Indexed: 06/06/2023]
Abstract
The Segway, which is a popular vehicle nowadays, is an uncertain nonlinear system and has an unknown time-varying control coefficient. Thus, we should consider the unknown time-varying control coefficient and model uncertainties to design the controller. Motivated by this observation, we propose a robust control for the Segway with unknown control coefficient and model uncertainties. To deal with the time-varying unknown control coefficient, we employ the Nussbaum gain technique. We introduce an auxiliary variable to solve the underactuated problem. Due to the prescribed performance control technique, the proposed controller does not require the adaptive technique, neural network, and fuzzy logic to compensate the uncertainties. Therefore, it can be simple. From the Lyapunov stability theory, we prove that all signals in the closed-loop system are bounded. Finally, we provide the simulation results to demonstrate the effectiveness of the proposed control scheme.
Collapse
Affiliation(s)
- Byung Woo Kim
- Department of Electronic Engineering, Chosun University, 375 Seosuk-Dong, Dong-Gu, Gwangju 61452, Korea.
| | - Bong Seok Park
- Division of Electrical, Electronic, and Control Engineering, Kongju National University, 1223-24 Cheonan-Daero, Seobuk-Gu, Cheonan 31080, Korea.
| |
Collapse
|
40
|
Hong ME, Shin YS, Kim BW, Sim SJ. Autotrophic hydrogen photoproduction by operation of carbon-concentrating mechanism in Chlamydomonas reinhardtii under sulfur deprivation condition. J Biotechnol 2016; 221:55-61. [DOI: 10.1016/j.jbiotec.2016.01.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 01/18/2016] [Accepted: 01/20/2016] [Indexed: 11/15/2022]
|
41
|
Kang JS, Kim DJ, Kim GY, Cha HJ, Kim S, Kim HS, Park C, Hwang HJ, Kim BW, Kim CM, Choi YH. Ethanol extract of Prunus mume fruit attenuates hydrogen peroxide-induced oxidative stress and apoptosis involving Nrf2/HO-1 activation in C2C12 myoblasts. Revista Brasileira de Farmacognosia 2016. [DOI: 10.1016/j.bjp.2015.06.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
42
|
Jang KJ, Choi SH, Yu GJ, Hong SH, Chung YH, Kim CH, Yoon HM, Kim GY, Kim BW, Choi YH. Anti-inflammatory potential of total saponins derived from the roots of Panax ginseng in lipopolysaccharide-activated RAW 264.7 macrophages. Exp Ther Med 2015; 11:1109-1115. [PMID: 26998045 DOI: 10.3892/etm.2015.2965] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Accepted: 10/29/2015] [Indexed: 01/01/2023] Open
Abstract
Ginseng, the root of Panax ginseng C.A. Meyer (Araliaceae), is a widely known traditional medicine that has been utilized throughout Asia for several thousand years. Ginseng saponins exert various important pharmacological effects regarding the control of a number of diseases. The aim of the present study was to identify the anti-inflammatory effects of total saponins extracted from ginseng (TSG) on lipopolysaccharide (LPS)-stimulated mouse RAW 264.7 macrophages. The inhibitory effects of TSG on LPS-induced nitric oxide (NO) production and LPS-induced tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β) protein expression were determined by measuring the levels of nitrite and enzyme-linked immunosorbent assays, respectively. Furthermore, the effects of TSG on the mRNA expression levels and localizations of inducible NO synthase (iNOS), IL-1β and TNF-α, and their upstream signaling proteins, including nuclear factor-κB (NF-κB) and mitogen-activated protein kinases (MAPKs), were investigated by reverse transcription-polymerase chain reaction and western blotting, respectively. Following stimulation with LPS, elevated levels of NO production were detected in RAW 264.7 cells; however, TSG pretreatment significantly inhibited the production of NO (P<0.05), by suppressing the expression of iNOS. In addition, LPS-stimulated TNF-α and IL-1β production was significantly reduced by TSG (P<0.05). In the LPS-stimulated RAW 264.7 cells, NF-κB was translocated from the cytosol to the nucleus, whilst TSG pretreatment induced the sequestration of NF-κB in the cytosol by inhibiting inhibitor of κB degradation. TSG also contributed to downregulation of MAPKs in LPS-stimulated RAW 264.7 cells. These results suggested that TSG may exert anti-inflammatory activity, and that TSG may be considered a potential therapeutic for the treatment of inflammatory diseases associated with macrophage activation.
Collapse
Affiliation(s)
- Kyung-Jun Jang
- Department of Acupuncture and Moxibustion, Dongeui University College of Korean Medicine, Busan 614-052, Republic of Korea
| | - Sang Hoon Choi
- Department of Acupuncture and Moxibustion, Dongeui University College of Korean Medicine, Busan 614-052, Republic of Korea
| | - Gyeong Jin Yu
- Department of Biochemistry, Dongeui University College of Korean Medicine, Busan 614-052, Republic of Korea
| | - Su Hyun Hong
- Department of Biochemistry, Dongeui University College of Korean Medicine, Busan 614-052, Republic of Korea
| | - Yoon Ho Chung
- NamHaeGun Black Garlic Co., Ltd., Busan 614-853, Republic of Korea
| | - Cheol-Hong Kim
- Department of Acupuncture and Moxibustion, Dongeui University College of Korean Medicine, Busan 614-052, Republic of Korea
| | - Hyun-Min Yoon
- Department of Acupuncture and Moxibustion, Dongeui University College of Korean Medicine, Busan 614-052, Republic of Korea
| | - Gi-Young Kim
- Laboratory of Immunobiology, Department of Marine Life Sciences, Jeju National University, Jeju 690-756, Republic of Korea
| | - Byung Woo Kim
- Anti-Aging Research Center and Blue-Bio Industry RIC, College of Natural Sciences and Human Ecology, Dongeui University, Busan 614-714, Republic of Korea; Department of Life Science and Biotechnology, Dongeui University, Busan 614-052, Republic of Korea
| | - Yung Hyun Choi
- Department of Biochemistry, Dongeui University College of Korean Medicine, Busan 614-052, Republic of Korea; Anti-Aging Research Center and Blue-Bio Industry RIC, College of Natural Sciences and Human Ecology, Dongeui University, Busan 614-714, Republic of Korea
| |
Collapse
|
43
|
Jin S, Park HJ, Oh YN, Kwon HJ, Kim JH, Choi YH, Kim BW. Anti-cancer Activity of Osmanthus matsumuranus Extract by Inducing G2/M Arrest and Apoptosis in Human Hepatocellular Carcinoma Hep G2 Cells. J Cancer Prev 2015; 20:241-9. [PMID: 26734586 PMCID: PMC4699751 DOI: 10.15430/jcp.2015.20.4.241] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 11/23/2015] [Accepted: 11/23/2015] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND Osmanthus matsumuranus, a species of Oleaceae, is found in East Asia and Southeast Asia. The bioactivities of O. matsumuranus have not yet been fully understood. Here, we studied on the molecular mechanisms underlying anti-cancer effect of ethanol extract of O. matsumuranus (EEOM). METHODS Inhibitory effect of EEOM on cell growth and proliferation was determined by WST assay in various cancer cells. To investigate the mechanisms of EEOM-mediated cytotoxicity, HepG2 cells were treated with various concentration of EEOM and analyzed the cell cycle arrest and apoptosis induction by flow cytometry, Western blot analysis, 4,6-diamidino-2-phenylindole (DAPI) staining and DNA fragmentation. RESULTS EEOM showed the cytotoxic activities in a dose-dependent manner in various cancer cell lines but not in normal cells, and HepG2 cells were most susceptible to EEOM-induced cytotoxicity. EEOM induced G2/M arrest in HepG2 cells associated with decreased expression of cyclin-dependent kinase 1 (CDK1), cyclin A and cylcin B, and increased expression of phospho-checkpoint kinase 2, p53 and CDK inhibitor p21. Immunofluorescence staining showed that EEOM-treated HepG2 increased doublet nuclei and condensed actin, resulting in cell rounding. Furthermore, EEOM-mediated apoptosis was determined by Annexin V staining, chromatin condensation and DNA fragmentation. EEOM caused upregulation of FAS and Bax, activation of caspase-3, -8, -9, and fragmentation of poly ADP ribose polymerase. CONCLUSIONS These results suggest that EEOM efficiently inhibits proliferation of HepG2 cells by inducing both G2/M arrest and apoptosis via intrinsic and extrinsic pathways, and EEOM may be used as a cancer chemopreventive agent in the food or nutraceutical industry.
Collapse
Affiliation(s)
- Soojung Jin
- Blue-Bio Industry Regional Innovation Center, Dong-Eui University, Busan,
Korea
- Department of Life Science and Biotechnology, College of Natural Sciences and Human Ecology, Dong-Eui University, Busan,
Korea
| | - Hyun-Jin Park
- Blue-Bio Industry Regional Innovation Center, Dong-Eui University, Busan,
Korea
| | - You Na Oh
- Blue-Bio Industry Regional Innovation Center, Dong-Eui University, Busan,
Korea
| | - Hyun Ju Kwon
- Blue-Bio Industry Regional Innovation Center, Dong-Eui University, Busan,
Korea
- Department of Life Science and Biotechnology, College of Natural Sciences and Human Ecology, Dong-Eui University, Busan,
Korea
| | - Jeong-Hwan Kim
- Blue-Bio Industry Regional Innovation Center, Dong-Eui University, Busan,
Korea
| | - Yung Hyun Choi
- Blue-Bio Industry Regional Innovation Center, Dong-Eui University, Busan,
Korea
- Department of Biochemistry, College of Korean Medicine, Dong-Eui University, Busan,
Korea
- Anti-Aging Research Center, Dong-Eui University, Busan,
Korea
| | - Byung Woo Kim
- Blue-Bio Industry Regional Innovation Center, Dong-Eui University, Busan,
Korea
- Department of Life Science and Biotechnology, College of Natural Sciences and Human Ecology, Dong-Eui University, Busan,
Korea
| |
Collapse
|
44
|
Kang JS, Han MH, Kim GY, Kim CM, Kim BW, Hwang HJ, Choi YH. Nrf2-mediated HO-1 induction contributes to antioxidant capacity of a Schisandrae Fructus ethanol extract in C2C12 myoblasts. Nutrients 2015; 6:5667-78. [PMID: 25493944 PMCID: PMC4276991 DOI: 10.3390/nu6125667] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Revised: 11/16/2014] [Accepted: 11/24/2014] [Indexed: 12/21/2022] Open
Abstract
This study was designed to confirm the protective effect of Schisandrae Fructus, which are the dried fruits of Schisandra chinensis (Turcz.) Baill, against oxidative stress-induced cellular damage and to elucidate the underlying mechanisms in C2C12 myoblasts. Preincubating C2C12 cells with a Schisandrae Fructus ethanol extract (SFEE) significantly attenuated hydrogen peroxide (H2O2)-induced inhibition of growth and induced scavenging activity against intracellular reactive oxygen species (ROS) induced by H2O2. SFEE also inhibited comet tail formation and phospho-histone γH2A.X expression, suggesting that it prevents H2O2-induced cellular DNA damage. Furthermore, treating C2C12 cells with SFEE significantly induced heme oxygenase-1 (HO-1) and phosphorylation of nuclear factor-erythroid 2 related factor 2 (Nrf2). However, zinc protoporphyrin IX, a potent inhibitor of HO-1 activity, significantly reversed the protective effects of SFEE against H2O2-induced growth inhibition and ROS generation in C2C12 cells. Additional experiments revealed that the potential of the SFEE to induce HO-1 expression and protect against H2O2-mediated cellular damage was abrogated by transient transfection with Nrf2-specific small interfering RNA, suggesting that the SFEE protected C2C12 cells against oxidative stress-induced injury through the Nrf2/HO-1 pathway.
Collapse
Affiliation(s)
- Ji Sook Kang
- Blue-Bio Industry Regional Innovation Center and Anti-Aging Research Center, Dongeui University, Busan 614-714, Korea; E-Mails: (J.S.K.); (B.W.K.); (H.J.H.)
| | - Min Ho Han
- Department of Biochemistry, College of Korean Medicine, Dongeui University, Busan 614-052, Korea; E-Mail:
| | - Gi-Young Kim
- Laboratory of Immunobiology, Department of Marine Life Sciences, Jeju National University, Jeju 690-756, Korea; E-Mail:
| | - Cheol Min Kim
- Department of Biochemistry, College of Medicine, Busan National University, Yangsan 626-870, Korea; E-Mail:
| | - Byung Woo Kim
- Blue-Bio Industry Regional Innovation Center and Anti-Aging Research Center, Dongeui University, Busan 614-714, Korea; E-Mails: (J.S.K.); (B.W.K.); (H.J.H.)
- Department of Life Science and Biotechnology, College of Natural Sciences, Dongeui University, Busan 614-714, Korea
| | - Hye Jin Hwang
- Blue-Bio Industry Regional Innovation Center and Anti-Aging Research Center, Dongeui University, Busan 614-714, Korea; E-Mails: (J.S.K.); (B.W.K.); (H.J.H.)
- Department of Food and Nutrition, College of Human Ecology, Dongeui University, Busan 614-714, Korea
| | - Yung Hyun Choi
- Blue-Bio Industry Regional Innovation Center and Anti-Aging Research Center, Dongeui University, Busan 614-714, Korea; E-Mails: (J.S.K.); (B.W.K.); (H.J.H.)
- Department of Biochemistry, College of Korean Medicine, Dongeui University, Busan 614-052, Korea; E-Mail:
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +82-51-850-7413; Fax: +82-51-853-4036
| |
Collapse
|
45
|
Park SJ, Oh CM, Kim BW, Woo SJ, Cho H, Park KH. Nationwide Incidence of Ocular Melanoma in South Korea by Using the National Cancer Registry Database (1999-2011). Invest Ophthalmol Vis Sci 2015. [PMID: 26207308 DOI: 10.1167/iovs.15-16532] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
PURPOSE The purpose of this study was to determine the age-standardized incidence rate of ocular melanoma and its subtypes in South Korea from 1999 to 2011. METHODS The national cancer registry in South Korea was reviewed to ascertain all ocular melanoma incidents between 1999 and 2011, which covered the entire South Korean population. Age-standardized incidence rates of ocular melanoma and its subtypes were calculated. Trends in incidence were analyzed by the use of Joinpoint regression. Analyses were stratified by tumor type, sex, age, and year of cancer diagnosis. RESULTS A total of 464 ocular melanoma cases (227 men [48.9%]) were identified from 1999 to 2011. The age-standardized incidence rate for 1999 to 2011 was 0.60 (95% confidence interval [CI]: 0.55-0.66) per million people. Among ocular melanomas, uveal melanoma had the highest age-standardized incidence rate for 1999 to 2011 (0.42 [95% CI: 0.38-0.47] per million people), followed by conjunctival melanoma (0.12 [95% CI: 0.09-0.14] per million people). The age-standardized incidence rate was higher in 2006 to 2011 than in 1999 to 2005, and increasing incidence trends were observed throughout the study period. CONCLUSIONS Incidence rate of ocular melanoma for 1999 to 2011 is relatively lower in South Korean population than in that reported in white population. Although ocular melanoma is still considered a rare cancer in South Korea, our findings suggest increasing incidence trends. This may warrant future in-depth study.
Collapse
Affiliation(s)
- Sang Jun Park
- Department of Ophthalmology Seoul National University College of Medicine, and Seoul National University Bundang Hospital, Seongnam, Republic of Korea 2Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Republic of Ko
| | - Chang-Mo Oh
- Cancer Registration and Statistic Branch, Division of Cancer Registration and Surveillance, National Cancer Center, Goyang, Republic of Korea
| | - Byung Woo Kim
- Cancer Registration and Statistic Branch, Division of Cancer Registration and Surveillance, National Cancer Center, Goyang, Republic of Korea
| | - Se Joon Woo
- Department of Ophthalmology Seoul National University College of Medicine, and Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Hyunsoon Cho
- Cancer Registration and Statistic Branch, Division of Cancer Registration and Surveillance, National Cancer Center, Goyang, Republic of Korea 4Cancer Surveillance Branch, Division of Cancer Registration and Surveillance, National Cancer Center, Goyang, Re
| | - Kyu Hyung Park
- Department of Ophthalmology Seoul National University College of Medicine, and Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| |
Collapse
|
46
|
Yu GJ, Choi IW, Kim GY, Hwang HJ, Kim BW, Kim CM, Kim WJ, Yoo YH, Choi YH. Induction of reactive oxygen species–mediated apoptosis by purified Schisandrae semen essential oil in human leukemia U937 cells through activation of the caspase cascades and nuclear relocation of mitochondrial apoptogenic factors. Nutr Res 2015; 35:910-920. [DOI: 10.1016/j.nutres.2015.06.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 06/15/2015] [Accepted: 06/30/2015] [Indexed: 10/23/2022]
|
47
|
Lee JY, Jin KS, Kwon HJ, Kim BW. Anti-Oxidative and Anti-Inflammatory Activities of Cotoneaster horizontalis Decne Extract. ACTA ACUST UNITED AC 2015. [DOI: 10.4014/mbl.1507.07008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
|
48
|
Jeong HY, Yun HJ, Kim BW, Lee EW, Kwon HJ. Widdrol-induced lipolysis is mediated by PKC and MEK/ERK in 3T3-L1 adipocytes. Mol Cell Biochem 2015; 410:247-54. [DOI: 10.1007/s11010-015-2558-0] [Citation(s) in RCA: 3] [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] [Received: 06/08/2015] [Accepted: 09/03/2015] [Indexed: 11/30/2022]
|
49
|
Jin S, Yun HJ, Jeong HY, Oh YN, Park HJ, Yun SG, Kim BW, Kwon HJ. Widdrol, a sesquiterpene isolated from Juniperus chinensis, inhibits angiogenesis by targeting vascular endothelial growth factor receptor 2 signaling. Oncol Rep 2015; 34:1178-84. [PMID: 26133679 DOI: 10.3892/or.2015.4075] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Accepted: 04/27/2015] [Indexed: 11/06/2022] Open
Abstract
Widdrol is an odorous compound derived from Juniperus chinensis that is widely used in traditional medicine to treat fever, inflammation and cancer. It was previously reported that widdrol has antitumor activity by apoptosis induction in cancer cells in vitro. However, its anti-angiogenic activity remains elusive. In the present study, we investigated the anti‑angiogenic activity of widdrol and the molecular mechanisms involved. Widdrol inhibited cell proliferation via G1 phase arrest induction in human umbilical vein endothelial cells (HUVECs) in a dose-dependent manner. Additionally, it was associated with a decreased expression of cyclin-dependent kinase 2 (CDK2) and an increased expression of p21, a CDK inhibitor. Widdrol significantly inhibited the cell migration and tube formation of HUVECs using an in vitro angiogenesis assay. The results showed that widdrol suppressed phosphorylation of vascular endothelial growth factor receptor 2 (VEGFR2) and its downstream proteins, such as AKT, focal adhesion kinase (FAK) and endothelial nitric oxide synthase (eNOS). Moreover, widdrol effectively reduced tumor growth and blood vessel formation in colon tumor xenograft mice. Collectively, these results suggested that widdrol may act as a potential anti-angiogenic agent by inhibiting vessel sprouting and growth, which may have implications for angioprevention.
Collapse
Affiliation(s)
- Soojung Jin
- Department of Life Science and Biotechnology, College of Natural Sciences and Human Ecology, Dong-Eui University, Busanjin-gu, Busan 614-714, Republic of Korea
| | - Hee Jung Yun
- Department of Life Science and Biotechnology, College of Natural Sciences and Human Ecology, Dong-Eui University, Busanjin-gu, Busan 614-714, Republic of Korea
| | - Hyun Young Jeong
- Department of Life Science and Biotechnology, College of Natural Sciences and Human Ecology, Dong-Eui University, Busanjin-gu, Busan 614-714, Republic of Korea
| | - You Na Oh
- Blue-Bio Industry Regional Innovation Center, Dong-Eui University, Busanjin-gu, Busan 614-714, Republic of Korea
| | - Hyun-Jin Park
- Blue-Bio Industry Regional Innovation Center, Dong-Eui University, Busanjin-gu, Busan 614-714, Republic of Korea
| | - Seung-Geun Yun
- Department of Life Science and Biotechnology, College of Natural Sciences and Human Ecology, Dong-Eui University, Busanjin-gu, Busan 614-714, Republic of Korea
| | - Byung Woo Kim
- Department of Life Science and Biotechnology, College of Natural Sciences and Human Ecology, Dong-Eui University, Busanjin-gu, Busan 614-714, Republic of Korea
| | - Hyun Ju Kwon
- Department of Life Science and Biotechnology, College of Natural Sciences and Human Ecology, Dong-Eui University, Busanjin-gu, Busan 614-714, Republic of Korea
| |
Collapse
|
50
|
Oh YN, Jin S, Park HJ, Kim BW, Kwon HJ. Anti-oxidative and Anti-cancer Activities of Treculia africana Extract in Human Colon Adenocarcinoma HT29 Cells. ACTA ACUST UNITED AC 2015. [DOI: 10.5352/jls.2015.25.5.515] [Citation(s) in RCA: 2] [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: 11/03/2022]
|