1
|
Baek S, Park CI, Hwang YG, Jeon H, Kim S, Song A, Park H, Park I, Kang J, Cha JY. Correction to: Enzyme‑derived deer velvet extract activate the immune response in cyclophosphamide‑induced immunosuppressive mice. Food Sci Biotechnol 2024; 33:1015. [PMID: 38371696 PMCID: PMC10866813 DOI: 10.1007/s10068-023-01398-8] [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: 02/20/2024] Open
Abstract
[This corrects the article DOI: 10.1007/s10068-023-01275-4.].
Collapse
Affiliation(s)
- Sinhwa Baek
- Yuhan Care Co., Ltd, Yuhan Care R&D Center, Yongin, 17084 Republic of Korea
- Yuhan Care Co., Ltd, Yuhan Natural Product R&D Center, Andong, 36618 Republic of Korea
| | - Cho I. Park
- Yuhan Care Co., Ltd, Yuhan Care R&D Center, Yongin, 17084 Republic of Korea
- Yuhan Care Co., Ltd, Yuhan Natural Product R&D Center, Andong, 36618 Republic of Korea
| | - Yun Gyeong Hwang
- Yuhan Care Co., Ltd, Yuhan Care R&D Center, Yongin, 17084 Republic of Korea
- Yuhan Care Co., Ltd, Yuhan Natural Product R&D Center, Andong, 36618 Republic of Korea
| | - Hyejin Jeon
- Yuhan Care Co., Ltd, Yuhan Care R&D Center, Yongin, 17084 Republic of Korea
- Yuhan Care Co., Ltd, Yuhan Natural Product R&D Center, Andong, 36618 Republic of Korea
| | - Seong‑Eun Kim
- Yuhan Care Co., Ltd, Yuhan Care R&D Center, Yongin, 17084 Republic of Korea
- Yuhan Care Co., Ltd, Yuhan Natural Product R&D Center, Andong, 36618 Republic of Korea
| | - Aeri Song
- Yuhan Care Co., Ltd, Yuhan Care R&D Center, Yongin, 17084 Republic of Korea
- Yuhan Care Co., Ltd, Yuhan Natural Product R&D Center, Andong, 36618 Republic of Korea
| | - Hyun‑Je Park
- Yuhan Care Co., Ltd, Yuhan Care R&D Center, Yongin, 17084 Republic of Korea
- Yuhan Care Co., Ltd, Yuhan Natural Product R&D Center, Andong, 36618 Republic of Korea
| | - Ilbum Park
- Yuhan Care Co., Ltd, Yuhan Care R&D Center, Yongin, 17084 Republic of Korea
| | - Jongsoo Kang
- Yuhan Care Co., Ltd, Seoul, 07335 Republic of Korea
| | - Joo Young Cha
- Yuhan Care Co., Ltd, Yuhan Care R&D Center, Yongin, 17084 Republic of Korea
- Yuhan Care Co., Ltd, Yuhan Natural Product R&D Center, Andong, 36618 Republic of Korea
| |
Collapse
|
2
|
Jung S, Lee S, Jeon H, Kim MH, Lee JS, Chang SH, Kim HJ, Jang H. Successful management of proteinuria in recurrent immunoglobulin A nephropathy after deceased donor kidney transplantation: A case report. Medicine (Baltimore) 2024; 103:e36990. [PMID: 38241588 PMCID: PMC10798750 DOI: 10.1097/md.0000000000036990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 12/26/2023] [Indexed: 01/21/2024] Open
Abstract
BACKGROUND Immunoglobulin A nephropathy (IgAN) is the most common type of primary glomerulonephritis, and recurrent IgAN is common after kidney transplantation (KT). Owing to the differences in various biopsy protocols and follow-ups in each study, the recurrence rate varies from 9.7% to 46%. Although the relapse rates are high, there is no definitive treatment for IgAN recurrence. METHODS We present a case of successful management of proteinuria in recurrent IgAN after deceased donor KT. A 60-year-old man diagnosed with IgAN 20 years prior, who progressed to end-stage renal disease, underwent deceased donor KT 5 years prior and was admitted to our hospital with progressively increasing proteinuria. RESULTS The pathological examination of the kidney biopsy specimen revealed recurrent IgAN. High-dose steroid treatment was initiated, and the patient was discharged while maintaining steroid treatment. However, outpatient follow-up showed that proteinuria did not decrease while steroids were maintained. Therefore, an angiotensin receptor blocker was administered after explaining its benefits to the patient. After the addition of angiotensin receptor blocker, proteinuria continued to decrease. CONCLUSION This case report highlights the importance of using renin-angiotensin system inhibitors with supportive care in cases of suspected of recurrent IgAN after KT. It also emphasizes the need to prescribe renin-angiotensin system inhibitors when steroid therapy is unsuccessful in cases of recurrent IgAN after KT.
Collapse
Affiliation(s)
- Sehyun Jung
- Division of Nephrology, Department of Internal Medicine, Gyeongsang National University College of Medicine and Gyeongsang National University Hospital, Jinju, South Korea
| | - Seunghye Lee
- Division of Nephrology, Department of Internal Medicine, Gyeongsang National University College of Medicine and Gyeongsang National University Hospital, Jinju, South Korea
| | - Hyejin Jeon
- Division of Nephrology, Department of Internal Medicine, Gyeongsang National University College of Medicine and Gyeongsang National University Hospital, Jinju, South Korea
| | - Min Hye Kim
- Department of Pathology, Gyeongsang National University College of Medicine and Gyeongsang National University Hospital, Jinju, South Korea
| | - Jong Sil Lee
- Department of Pathology, Gyeongsang National University College of Medicine and Gyeongsang National University Hospital, Jinju, South Korea
- Institute of Health Sciences, Gyeongsang National University, Jinju, South Korea
| | - Se-Ho Chang
- Division of Nephrology, Department of Internal Medicine, Gyeongsang National University College of Medicine and Gyeongsang National University Hospital, Jinju, South Korea
- Institute of Health Sciences, Gyeongsang National University, Jinju, South Korea
| | - Hyun-Jung Kim
- Division of Nephrology, Department of Internal Medicine, Gyeongsang National University College of Medicine and Gyeongsang National University Hospital, Jinju, South Korea
- Institute of Health Sciences, Gyeongsang National University, Jinju, South Korea
| | - Hani Jang
- Division of Nephrology, Department of Internal Medicine, Gyeongsang National University College of Medicine and Gyeongsang National University Hospital, Jinju, South Korea
| |
Collapse
|
3
|
Lee S, Jung S, Jeon H, Jang H, Kim HJ, Lee TW, Bae E, Park DJ, Chang SH. Spontaneous Remission of Minimal Change Disease in a Colon Cancer Patient: A Case Report. Biomed Hub 2024; 9:62-66. [PMID: 38638677 PMCID: PMC11026070 DOI: 10.1159/000538279] [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: 11/06/2023] [Accepted: 03/04/2024] [Indexed: 04/20/2024] Open
Abstract
Introduction Minimal change disease (MCD) is most often primary but may occur secondary to other systemic diseases such as malignancy. In secondary MCD, spontaneous remission of nephrotic syndrome after the treatment of related diseases without steroid therapy is rare. Case Presentation A 78-year-old man visited the outpatient clinic with foamy urine and generalized edema that had persisted for 2 months. The patient had nephrotic syndrome. Before a kidney biopsy, he underwent several tests to determine the secondary cause of the nephrotic syndrome. The serum CEA was slightly elevated, and colon cancer was detected in the sigmoid colon. MCD was diagnosed from a kidney biopsy. He immediately underwent surgery for colon cancer. Complete remission of the MCD was achieved within 2 weeks after surgery. Conclusion Here, we report a rare case of a patient with secondary MCD who successfully achieved spontaneous remission after colon cancer surgery.
Collapse
Affiliation(s)
- Seunghye Lee
- Department of Internal Medicine-Nephrology, College of Medicine, Gyeongsang National University, Jinju, Republic of Korea
- Department of Internal Medicine-Nephrology, Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Sehyun Jung
- Department of Internal Medicine-Nephrology, College of Medicine, Gyeongsang National University, Jinju, Republic of Korea
- Department of Internal Medicine-Nephrology, Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Hyejin Jeon
- Department of Internal Medicine-Nephrology, College of Medicine, Gyeongsang National University, Jinju, Republic of Korea
- Department of Internal Medicine-Nephrology, Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Hani Jang
- Department of Internal Medicine-Nephrology, College of Medicine, Gyeongsang National University, Jinju, Republic of Korea
- Department of Internal Medicine-Nephrology, Gyeongsang National University Hospital, Jinju, Republic of Korea
- Institute of Medical Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - Hyun-Jung Kim
- Department of Internal Medicine-Nephrology, College of Medicine, Gyeongsang National University, Jinju, Republic of Korea
- Department of Internal Medicine-Nephrology, Gyeongsang National University Hospital, Jinju, Republic of Korea
- Institute of Medical Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - Tae Won Lee
- Department of Internal Medicine-Nephrology, College of Medicine, Gyeongsang National University, Jinju, Republic of Korea
- Department of Internal Medicine-Nephrology, Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea
- Institute of Medical Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - Eunjin Bae
- Department of Internal Medicine-Nephrology, College of Medicine, Gyeongsang National University, Jinju, Republic of Korea
- Department of Internal Medicine-Nephrology, Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea
- Institute of Medical Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - Dong Jun Park
- Department of Internal Medicine-Nephrology, College of Medicine, Gyeongsang National University, Jinju, Republic of Korea
- Department of Internal Medicine-Nephrology, Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea
- Institute of Medical Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - Se-Ho Chang
- Department of Internal Medicine-Nephrology, College of Medicine, Gyeongsang National University, Jinju, Republic of Korea
- Department of Internal Medicine-Nephrology, Gyeongsang National University Hospital, Jinju, Republic of Korea
- Institute of Medical Sciences, Gyeongsang National University, Jinju, Republic of Korea
| |
Collapse
|
4
|
Kim YH, Jeong H, Won BR, Jeon H, Park CH, Park D, Kim Y, Lee S, Myung JH. Nanoparticle Exsolution on Perovskite Oxides: Insights into Mechanism, Characteristics and Novel Strategies. Nanomicro Lett 2023; 16:33. [PMID: 38015283 PMCID: PMC10684483 DOI: 10.1007/s40820-023-01258-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 10/19/2023] [Indexed: 11/29/2023]
Abstract
Supported nanoparticles have attracted considerable attention as a promising catalyst for achieving unique properties in numerous applications, including fuel cells, chemical conversion, and batteries. Nanocatalysts demonstrate high activity by expanding the number of active sites, but they also intensify deactivation issues, such as agglomeration and poisoning, simultaneously. Exsolution for bottom-up synthesis of supported nanoparticles has emerged as a breakthrough technique to overcome limitations associated with conventional nanomaterials. Nanoparticles are uniformly exsolved from perovskite oxide supports and socketed into the oxide support by a one-step reduction process. Their uniformity and stability, resulting from the socketed structure, play a crucial role in the development of novel nanocatalysts. Recently, tremendous research efforts have been dedicated to further controlling exsolution particles. To effectively address exsolution at a more precise level, understanding the underlying mechanism is essential. This review presents a comprehensive overview of the exsolution mechanism, with a focus on its driving force, processes, properties, and synergetic strategies, as well as new pathways for optimizing nanocatalysts in diverse applications.
Collapse
Affiliation(s)
- Yo Han Kim
- Department of Materials Science and Engineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Hyeongwon Jeong
- Department of Materials Science and Engineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Bo-Ram Won
- Department of Materials Science and Engineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Hyejin Jeon
- Department of Materials Science and Engineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Chan-Ho Park
- Department of Materials Science and Engineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Dayoung Park
- Department of Materials Science and Engineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Yeeun Kim
- Department of Materials Science and Engineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Somi Lee
- Department of Materials Science and Engineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Jae-Ha Myung
- Department of Materials Science and Engineering, Incheon National University, Incheon, 22012, Republic of Korea.
| |
Collapse
|
5
|
Kim H, Yoo MS, Jeon H, Shim JJ, Park WJ, Kim JY, Lee JL. Probiotic Properties and Safety Evaluation of Lactobacillus plantarum HY7718 with Superior Storage Stability Isolated from Fermented Squid. Microorganisms 2023; 11:2254. [PMID: 37764098 PMCID: PMC10534859 DOI: 10.3390/microorganisms11092254] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 09/04/2023] [Accepted: 09/06/2023] [Indexed: 09/29/2023] Open
Abstract
The aim of this study was to identify new potential probiotics with improved storage stability and to evaluate their efficacy and safety. Sixty lactic acid bacteria strains were isolated from Korean traditional fermented foods, and their survival was tested under extreme conditions. Lactobacillus plantarum HY7718 (HY7718) showed the greatest stability during storage. HY7718 also showed a stable growth curve under industrial conditions. Whole genome sequencing revealed that the HY7718 genome comprises 3.26 Mbp, with 44.5% G + C content, and 3056 annotated Protein-coding DNA sequences (CDSs). HY7718 adhered to intestinal epithelial cells and was tolerant to gastric fluids. Additionally, HY7718 exhibited no hemolytic activity and was not resistant to antibiotics, confirming that it has probiotic properties and is safe for consumption. Additionally, we evaluated its effects on intestinal health using TNF-induced Caco-2 cells. HY7718 restored the expression of tight junction proteins such as zonular occludens (ZO-1, ZO-2), occludin (OCLN), and claudins (CLDN1, CLDN4), and regulated the expression of myosin light-chain kinase (MLCK), Elk-1, and nuclear factor kappa B subunit 1 (NFKB1). Moreover, HY7718 reduced the secretion of proinflammatory cytokines such as interleukin-6 (IL-6) and IL-8, as well as reducing the levels of peroxide-induced reactive oxygen species. In conclusion, HY7718 has probiotic properties, is safe, is stable under extreme storage conditions, and exerts positive effects on intestinal cells. These results suggest that L. plantarum HY7718 is a potential probiotic for use as a functional supplement in the food industry.
Collapse
Affiliation(s)
- Hyeonji Kim
- R&BD Center, hy Co., Ltd., 22, Giheungdanji-ro 24beon-gil, Giheung-gu, Yongin-si 17086, Republic of Korea; (H.K.); (M.-S.Y.); (H.J.); (J.-J.S.)
| | - Myeong-Seok Yoo
- R&BD Center, hy Co., Ltd., 22, Giheungdanji-ro 24beon-gil, Giheung-gu, Yongin-si 17086, Republic of Korea; (H.K.); (M.-S.Y.); (H.J.); (J.-J.S.)
| | - Hyejin Jeon
- R&BD Center, hy Co., Ltd., 22, Giheungdanji-ro 24beon-gil, Giheung-gu, Yongin-si 17086, Republic of Korea; (H.K.); (M.-S.Y.); (H.J.); (J.-J.S.)
| | - Jae-Jung Shim
- R&BD Center, hy Co., Ltd., 22, Giheungdanji-ro 24beon-gil, Giheung-gu, Yongin-si 17086, Republic of Korea; (H.K.); (M.-S.Y.); (H.J.); (J.-J.S.)
| | - Woo-Jung Park
- Department of Marine Food Science and Technology, Gangneung-Wonju National University, Gangneung 25457, Republic of Korea;
| | - Joo-Yun Kim
- R&BD Center, hy Co., Ltd., 22, Giheungdanji-ro 24beon-gil, Giheung-gu, Yongin-si 17086, Republic of Korea; (H.K.); (M.-S.Y.); (H.J.); (J.-J.S.)
| | - Jung-Lyoul Lee
- R&BD Center, hy Co., Ltd., 22, Giheungdanji-ro 24beon-gil, Giheung-gu, Yongin-si 17086, Republic of Korea; (H.K.); (M.-S.Y.); (H.J.); (J.-J.S.)
| |
Collapse
|
6
|
Baek S, Park CI, Hwang YG, Jeon H, Kim SE, Song A, Park HJ, Park I, Kang J, Cha JY. Enzyme-derived deer velvet extract activate the immune response in cyclophosphamide-induced immunosuppressive mice. Food Sci Biotechnol 2023; 32:1435-1444. [PMID: 37457410 PMCID: PMC10349012 DOI: 10.1007/s10068-023-01275-4] [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: 10/25/2022] [Revised: 01/05/2023] [Accepted: 01/30/2023] [Indexed: 02/25/2023] Open
Abstract
Deer velvet (DV) is an oriental traditional medicine used to treat various diseases. The present study examined the effect of flavourzyme-derived DV extract (YC-1101) on macrophages and an immunosuppressed mouse model. YC-1101 induced activation of macrophages as measured by nitric oxide production, cell proliferation, and cytokine release via concentration-dependent phosphorylation of c-Jun N-terminal kinase, extracellular signal-regulated kinase, and AKT, and nuclear translocation of p65 in macrophages. In addition, oral YC-1101 administration significantly increased splenocyte proliferation and natural killer cell activity in the immunosuppressed mouse model. Moreover, the levels of immune-related cytokines such as tumor necrotic factor-α, interferon-γ, and interleukin-2 were significantly increased by YC-1101 treatment comparable to the control group. Thus, these results suggest that YC-1101 is an efficient natural ingredient that has an immune-enhancing effect, and it might be a potential functional food for improving immunity.
Collapse
Affiliation(s)
- Sinhwa Baek
- Yuhan Care Co., Ltd, Yuhan Care R&D Center, Yongin, 17084 Republic of Korea
- Yuhan Care Co., Ltd, Yuhan Natural Product R&D Center, Andong, 36618 Republic of Korea
| | - Cho I Park
- Yuhan Care Co., Ltd, Yuhan Care R&D Center, Yongin, 17084 Republic of Korea
- Yuhan Care Co., Ltd, Yuhan Natural Product R&D Center, Andong, 36618 Republic of Korea
| | - Yun Gyeong Hwang
- Yuhan Care Co., Ltd, Yuhan Care R&D Center, Yongin, 17084 Republic of Korea
- Yuhan Care Co., Ltd, Yuhan Natural Product R&D Center, Andong, 36618 Republic of Korea
| | - Hyejin Jeon
- Yuhan Care Co., Ltd, Yuhan Care R&D Center, Yongin, 17084 Republic of Korea
- Yuhan Care Co., Ltd, Yuhan Natural Product R&D Center, Andong, 36618 Republic of Korea
| | - Seong-Eun Kim
- Yuhan Care Co., Ltd, Yuhan Care R&D Center, Yongin, 17084 Republic of Korea
- Yuhan Care Co., Ltd, Yuhan Natural Product R&D Center, Andong, 36618 Republic of Korea
| | - Aeri Song
- Yuhan Care Co., Ltd, Yuhan Care R&D Center, Yongin, 17084 Republic of Korea
- Yuhan Care Co., Ltd, Yuhan Natural Product R&D Center, Andong, 36618 Republic of Korea
| | - Hyun-Je Park
- Yuhan Care Co., Ltd, Yuhan Care R&D Center, Yongin, 17084 Republic of Korea
- Yuhan Care Co., Ltd, Yuhan Natural Product R&D Center, Andong, 36618 Republic of Korea
| | - Ilbum Park
- Yuhan Care Co., Ltd, Yuhan Care R&D Center, Yongin, 17084 Republic of Korea
| | - Jongsoo Kang
- Yuhan Care Co., Ltd, Seoul, 07335 Republic of Korea
| | - Joo Young Cha
- Yuhan Care Co., Ltd, Yuhan Care R&D Center, Yongin, 17084 Republic of Korea
- Yuhan Care Co., Ltd, Yuhan Natural Product R&D Center, Andong, 36618 Republic of Korea
| |
Collapse
|
7
|
Otsuka P, Chinbe R, Tomoda M, Matsuda O, Tanaka Y, Profunser D, Kim S, Jeon H, Veres I, Maznev A, Wright O. Imaging phonon eigenstates and elucidating the energy storage characteristics of a honeycomb-lattice phononic crystal cavity. Photoacoustics 2023; 31:100481. [PMID: 37214426 PMCID: PMC10192931 DOI: 10.1016/j.pacs.2023.100481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 03/23/2023] [Accepted: 03/23/2023] [Indexed: 05/24/2023]
Abstract
We extend gigahertz time-domain imaging to a wideband investigation of the eigenstates of a phononic crystal cavity. Using omnidirectionally excited phonon wave vectors, we implement an ultrafast technique to experimentally probe the two-dimensional acoustic field inside and outside a hexagonal cavity in a honeycomb-lattice phononic crystal formed in a microscopic crystalline silicon slab, thereby revealing the confinement and mode volumes of phonon eigenstates-some of which are clearly hexapole in character-lying both inside and outside the phononic-crystal band gap. This allows us to obtain a quantitative measure of the spatial acoustic energy storage characteristics of a phononic crystal cavity. We also introduce a numerical approach involving toneburst excitation and the monitoring of the acoustic energy decay together with the integral of the Poynting vector to calculate the Q factor of the principal in-gap eigenmode, showing it to be limited by ultrasonic attenuation rather than by phonon leakage to the surrounding region.
Collapse
Affiliation(s)
- P.H. Otsuka
- Division of Applied Physics, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - R. Chinbe
- Division of Applied Physics, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - M. Tomoda
- Division of Applied Physics, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - O. Matsuda
- Division of Applied Physics, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Y. Tanaka
- Division of Applied Physics, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - D.M. Profunser
- Division of Applied Physics, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - S. Kim
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea
| | - H. Jeon
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea
| | - I.A. Veres
- Research Center for Non-Destructive Testing GmbH, Altenberger Str. 69, Linz 4040, Austria
| | - A.A. Maznev
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge 02139, United States of America
| | - O.B. Wright
- Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
- Hokkaido University, Sapporo 060-0808, Japan
| |
Collapse
|
8
|
Jeon H, Choi Y, Brännström M, Akin JW, Curry TE, Jo M. Cortisol/glucocorticoid receptor: a critical mediator of the ovulatory process and luteinization in human periovulatory follicles. Hum Reprod 2023; 38:671-685. [PMID: 36752644 PMCID: PMC10068287 DOI: 10.1093/humrep/dead017] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 01/03/2023] [Indexed: 02/09/2023] Open
Abstract
STUDY QUESTION Do cortisol/glucocorticoid receptors play an active role in the human ovary during ovulation and early luteinization? SUMMARY ANSWER The ovulatory hCG stimulation-induced glucocorticoid receptor signaling plays a crucial role in regulating steroidogenesis and ovulatory cascade in human periovulatory follicles. WHAT IS KNOWN ALREADY Previous studies reported an increase in cortisol levels in the human follicular fluid after the LH surge or ovulatory hCG administration. However, little is known about the role of cortisol/glucocorticoid receptors in the ovulatory process and luteinization in humans. STUDY DESIGN, SIZE, DURATION This study was an experimental prospective clinical and laboratory-based study. An in vivo experimental study was accomplished utilizing the dominant ovarian follicles from 38 premenopausal women undergoing laparoscopic sterilization. An in vitro experimental study was completed using the primary human granulosa/lutein cells (hGLC) from 26 premenopausal women undergoing IVF. PARTICIPANTS/MATERIALS, SETTING, METHODS This study was conducted in a private fertility clinic and academic medical centers. Dominant ovarian follicles were collected before the LH surge and at defined times after hCG administration from women undergoing laparoscopic sterilization. Primary hGLC were collected from women undergoing IVF. hGLC were treated without or with hCG in the absence or presence of RU486 (20 µM; dual antagonist for progesterone receptor and glucocorticoid receptor) or CORT125281 (50 µM; selective glucocorticoid receptor antagonist) for 12 or 36 h. The expression of genes involved in glucocorticoid receptor signaling, steroidogenesis, and ovulatory cascade was studied with RT-quantitative PCR and western blotting. The production of cortisol, corticosterone, and progesterone was assessed by hormone assay kits. MAIN RESULTS AND THE ROLE OF CHANCE hCG administration upregulated the expression of hydroxysteroid 11-beta dehydrogenase 1 (HSD11B1), nuclear receptor subfamily 3 group C member 1 (NR3C1), FKBP prolyl isomerase 5 (FKBP5), and FKBP prolyl isomerase 4 (FKBP4) in human ovulatory follicles and in hGLC (P < 0.05). RU486 and CORT125281 reduced hCG-induced increases in progesterone and cortisol production in hGLC. The expression of genes involved in glucocorticoid receptor signaling, steroidogenesis, and the key ovulatory process was reduced by RU486 and/or CORT125281 in hGLC. LARGE SCALE DATA N/A. LIMITATIONS, REASONS FOR CAUTION The role of cortisol/glucocorticoid receptors demonstrated using the hGLC model may not fully reflect their physiological roles in vivo. WIDER IMPLICATIONS OF THE FINDINGS Successful ovulation and luteinization are essential for female fertility. Women with dysregulated cortisol levels often suffer from anovulatory infertility. Deciphering the functional role of glucocorticoid receptor signaling in human periovulatory follicles enhances our knowledge of basic ovarian physiology and may provide therapeutic insights into treating infertility in women. STUDY FUNDING/COMPETING INTEREST(S) This study was supported by P01HD71875 (to M.J., T.E.C., and M.B.) and R01HD096077 (to M.J.) from the Foundation for the National Institutes of Health and the BTPSRF of the University of Kentucky Markey Cancer Center (P30CA177558). The authors report no competing interests. TRIAL REGISTRATION NUMBER N/A.
Collapse
Affiliation(s)
- H Jeon
- Department of Obstetrics and Gynecology, University of Kentucky College of Medicine, Lexington, KY, USA
- Department of Pharmacology and Nutritional Sciences, University of Kentucky College of Medicine, Lexington, KY, USA
| | - Y Choi
- Department of Obstetrics and Gynecology, University of Kentucky College of Medicine, Lexington, KY, USA
| | - M Brännström
- Department of Obstetrics and Gynecology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Stockholm IVF, Stockholm, Sweden
| | - J W Akin
- Bluegrass Fertility Center, Lexington, KY, USA
| | - T E Curry
- Department of Obstetrics and Gynecology, University of Kentucky College of Medicine, Lexington, KY, USA
| | - M Jo
- Department of Obstetrics and Gynecology, University of Kentucky College of Medicine, Lexington, KY, USA
| |
Collapse
|
9
|
Jeon H, Kim G, Nam H, Suh S. The Function of Bedtime Procrastination in Individuals with Clinical Insomnia. Sleep Med 2022. [DOI: 10.1016/j.sleep.2022.05.385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
10
|
Ryu K, Heo Y, Lee Y, Jeon H, Namkung W. Berbamine Reduces Chloroquine-Induced Itch in Mice through Inhibition of MrgprX1. Int J Mol Sci 2022; 23:ijms232214321. [PMID: 36430803 PMCID: PMC9698483 DOI: 10.3390/ijms232214321] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/14/2022] [Accepted: 11/17/2022] [Indexed: 11/22/2022] Open
Abstract
Chloroquine (CQ) is an antimalaria drug that has been widely used for decades. However, CQ-induced pruritus remains one of the major obstacles in CQ treatment for uncomplicated malaria. Recent studies have revealed that MrgprX1 plays an essential role in CQ-induced itch. To date, a few MrgprX1 antagonists have been discovered, but they are clinically unavailable or lack selectivity. Here, a cell-based high-throughput screening was performed to identify novel antagonists of MrgprX1, and the screening of 2543 compounds revealed two novel MrgprX1 inhibitors, berbamine and closantel. Notably, berbamine potently inhibited CQ-mediated MrgprX1 activation (IC50 = 1.6 μM) but did not alter the activity of other pruritogenic GPCRs. In addition, berbamine suppressed the CQ-mediated phosphorylation of ERK1/2. Interestingly, CQ-induced pruritus was significantly reduced by berbamine in a dose-dependent manner, but berbamine had no effect on histamine-induced, protease-activated receptors 2-activating peptide-induced, and deoxycholic acid-induced itch in mice. These results suggest that berbamine is a novel, potent, and selective antagonist of MrgprX1 and may be a potential drug candidate for the development of therapeutic agents to treat CQ-induced pruritus.
Collapse
|
11
|
Park J, Jee J, Choi W, Lee K, Lim T, Jeon H, Seo J, Yoo J. Tissue Engineering, Embryonic, Organ and Other Tissue Specific Stem Cells: ASSESSMENT OF THE MUCOSAL HEALING EFFECT OF COLON ORGANOID TRANSPLANTATION IN RADIATION COLITIS. Cytotherapy 2022. [DOI: 10.1016/s1465-3249(22)00402-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
12
|
Park J, Lim T, Jeon H, Song H, Choi W, Lee K. Tissue Engineering, Embryonic, Organ and Other Tissue Specific Stem Cells: ORGANOID AS A REGENERATIVE MEDICINE TO HEAL ULCERS IN A PORCINE MODEL OF RADIATION PROCTITIS AND CONSIDERATION FOR FIRST IN HUMAN TRIALS. Cytotherapy 2022. [DOI: 10.1016/s1465-3249(22)00405-4] [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: 11/03/2022]
|
13
|
Rim D, Shin H, Jeon H, Kim J, Chun H, Oh H, Shon S, Shim K, Kim KM. [Collaborative Disaster Governance Recognized by Nurses during a Pandemic]. J Korean Acad Nurs 2022; 51:703-719. [PMID: 35023859 DOI: 10.4040/jkan.21163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 10/21/2021] [Accepted: 10/22/2021] [Indexed: 12/23/2022]
Abstract
PURPOSE We aimed to identify collaborative disaster governance through the demand and supply analysis of resources recognized by nurses during the COVID-19 pandemic. METHODS We used a descriptive study design with an online survey technique for data collection. The survey questions were developed based on focus group interviews with nurses responding to COVID-19 and expert validity testing. A 42-question online survey focusing on disaster governance was sent to nurses working in COVID-19 designated hospitals, public health offices, and schools. A total of 630 nurses participated in the survey. Demand and supply analysis was used to identify the specific components of disaster governance during a pandemic situation and analyze priority areas in disaster governance, as reported by nurses. RESULTS Demand and supply analysis showed that supplies procurement, cooperation, education, and environment factors clustered in the high demand and supply quadrant while labor condition, advocacy, emotional support, and workload adjustment factors clustered in the high demand but low supply quadrant, indicating a strong need in those areas of disaster governance among nurses. The nurses practicing at the public health offices and schools showed major components of disaster governance plotted in the second quadrant, indicating weak collaborative disaster governance. CONCLUSION These findings show that there is an unbalanced distribution among nurses, resulting in major challenges in collaborative disaster governance during COVID-19. In the future and current pandemic, collaborative disaster governance, through improved distribution, will be useful for helping nurses to access more required resources and achieve effective pandemic response.
Collapse
Affiliation(s)
- Dahae Rim
- College of Nursing Science, Kyung Hee University, Seoul, Korea
| | - Hyunsook Shin
- College of Nursing Science, Kyung Hee University, Seoul, Korea.
| | - Hyejin Jeon
- College of Nursing Science, Kyung Hee University, Seoul, Korea
| | - Jieun Kim
- College of Nursing Science, Kyung Hee University, Seoul, Korea
| | - Hyojin Chun
- College of Nursing Science, Kyung Hee University, Seoul, Korea
| | - Hee Oh
- College of Nursing Science, Kyung Hee University, Seoul, Korea
| | | | - Kaka Shim
- Department of Nursing, College of Convergence Technology, Sang Myung University, Cheonan, Korea
| | - Kyung Mi Kim
- Department of Nursing Science, College of Medicine, Chungbuk National University, Cheongju, Korea
| |
Collapse
|
14
|
Na SH, Jeon H, Oh MH, Kim YJ, Chu M, Lee IY, Lee JC. Therapeutic Effects of Inhibitor of ompA Expression against Carbapenem-Resistant Acinetobacter baumannii Strains. Int J Mol Sci 2021; 22:12257. [PMID: 34830146 PMCID: PMC8623844 DOI: 10.3390/ijms222212257] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 11/06/2021] [Accepted: 11/10/2021] [Indexed: 12/02/2022] Open
Abstract
The widespread of carbapenem-resistant Acinetobacter baumannii (CRAB) is of great concern in clinical settings worldwide. It is urgent to develop new therapeutic agents against this pathogen. This study aimed to evaluate the therapeutic potentials of compound 62520, which has been previously identified as an inhibitor of the ompA promoter activity of A. baumannii, against CRAB isolates, both in vitro and in vivo. Compound 62520 was found to inhibit the ompA expression and biofilm formation in A. baumannii ATCC 17978 at sub-inhibitory concentrations in a dose-dependent manner. These inhibitory properties were also observed in clinical CRAB isolates belonging to sequence type (ST) 191. Additionally, compound 62520 exhibited a bacteriostatic activity against clinical clonal complex (CC) 208 CRAB isolates, including ST191, and ESKAPE pathogens. This bacteriostatic activity was not different between STs of CRAB isolates. Bacterial clearance was observed in mice infected with bioimaging A. baumannii strain 24 h after treatment with compound 62520. Compound 62520 was shown to significantly increase the survival rates of both immunocompetent and neutropenic mice infected with A. baumannii ATCC 17978. This compound also increased the survival rates of mice infected with clinical CRAB isolate. These results suggest that compound 62520 is a promising scaffold to develop a novel therapeutic agent against CRAB infections.
Collapse
Affiliation(s)
- Seok-Hyeon Na
- Division of Antimicrobial Resistance Research, Center for Infectious Diseases Research, National Institute of Infectious Diseases, National Institute of Health, Korea Disease Control and Prevention Agency, Cheongju 28159, Korea;
| | - Hyejin Jeon
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu 41944, Korea; (H.J.); (Y.-J.K.)
| | - Man-Hwan Oh
- Department of Microbiology, College of Science and Technology, Dankook University, Cheonan 16890, Korea;
| | - Yoo-Jeong Kim
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu 41944, Korea; (H.J.); (Y.-J.K.)
| | - Mingi Chu
- Research Center for Eco-Friendly New Materials, Bio & Drug Discovery Division, Korea Research Institute of Chemical Technology, Daejeon 34114, Korea; (M.C.); (I.-Y.L.)
| | - Ill-Young Lee
- Research Center for Eco-Friendly New Materials, Bio & Drug Discovery Division, Korea Research Institute of Chemical Technology, Daejeon 34114, Korea; (M.C.); (I.-Y.L.)
| | - Je-Chul Lee
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu 41944, Korea; (H.J.); (Y.-J.K.)
| |
Collapse
|
15
|
Na SH, Jeon H, Oh MH, Kim YJ, Lee JC. Screening of small molecules attenuating biofilm formation of Acinetobacter baumannii by inhibition of ompA promoter activity. J Microbiol 2021; 59:871-878. [PMID: 34449059 DOI: 10.1007/s12275-021-1394-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/05/2021] [Accepted: 08/05/2021] [Indexed: 12/31/2022]
Abstract
Anti-virulence therapeutic strategies are promising alternatives against drug-resistant pathogens. Outer membrane protein A (OmpA) plays a versatile role in the pathogenesis and antimicrobial resistance of Acinetobacter baumannii. Therefore, OmpA is an innovative target for anti-virulence therapy against A. baumannii. This study aimed to develop a high-throughput screening (HTS) system to discover small molecules inhibiting the ompA promoter activity of A. baumannii and screen chemical compounds using the bacterial growth-based HTS system. The ompA promoter and open reading frame of nptI fusion plasmids that controlled the expression of nptI encoding resistance to kanamycin by the ompA promoter were constructed and then transformed into A. baumannii ATCC 17978. This reporter strain was applied to screen small molecules inhibiting the ompA promoter activity in a chemical library. Of the 7,520 chemical compounds, 15 exhibited ≥ 70% growth inhibition of the report strain cultured in media containing kanamycin. Three compounds inhibited the expression of ompA and OmpA in the outer membrane of A. baumannii ATCC 17978, which subsequently reduced biofilm formation. In conclusion, our reporter strain is useful for large-scale screening of small molecules inhibiting the ompA expression in A. baumannii. Hit compounds identified by the HTS system are promising scaffolds to develop novel therapeutics against A. baumannii.
Collapse
Affiliation(s)
- Seok Hyeon Na
- Division of Antimicrobial Resistance Research, Center for Infectious Diseases Research, National Institute of Infectious Diseases, National Institute of Health, Korea Disease Control and Prevention Agency, Cheongju, 28159, Republic of Korea
| | - Hyejin Jeon
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Man Hwan Oh
- Department of Microbiology, Dankook University, Cheonan, 31116, Republic of Korea
| | - Yoo Jeong Kim
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Je Chul Lee
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu, 41566, Republic of Korea.
| |
Collapse
|
16
|
Sandu O, Aldabagh M, Alvarado G, Jeon H, Yeddu H, Cohen A, Sharlow A, Lamar A, Weiner M, Kizer J, Jones S, Goldberg Y. Outreach and equity in patient centered outcomes research: Lessons from the adaptable study at Montefiore hospital. Atherosclerosis 2021. [DOI: 10.1016/j.atherosclerosis.2021.06.834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
17
|
Park G, Chun H, Jeon H, Choi H, Kim E, Keum B, Jeen Y, Lee J. P-248 Determination of the optimal electrical field for apoptosis in the rat stomach during irreversible electroporation. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.05.302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
|
18
|
Shon S, Jeon H, Hwang H. Core educational components of interprofessional education in pediatric emergencies: An integrated review. Child Health Nurs Res 2021; 27:111-126. [PMID: 35004502 PMCID: PMC8650907 DOI: 10.4094/chnr.2021.27.2.111] [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: 02/28/2021] [Revised: 03/22/2021] [Accepted: 04/08/2021] [Indexed: 11/18/2022] Open
Abstract
PURPOSE This study was conducted to explore the core educational components of interprofessional education (IPE) for pediatric emergencies to establish a basis for interprofessional simulation education. METHODS Using Whittemore and Knafl's integrative review method, we searched for studies in PubMed, Embase, Cochrane Library, CINAHL, and four South Korean databases (RISS, NDSL, DBpia, and KISS). RESULTS We identified 21 studies on the general characteristics of IPE in pediatric emergency situations and integrated the core components of IPE according to a PRISMA flowchart. Three core components were identified (individual-competent professionals, team-cooperative professions, and outcome-optimal achievement), with the subthemes of role and responsibility, clinical judgment, performance, leadership, communication, teamwork, patient safety, and quality improvement. CONCLUSION We recommend that IPE pediatric emergencies should contain the three dimensions of these core components to enhance individual and team performance and to promote optimal achievement in terms of patient outcomes. IPE programs should consider these characteristics and include a valid tool for evaluating the programs' effectiveness.
Collapse
Affiliation(s)
- Soonyoung Shon
- Assistant Professor, College of Nursing, Keimyung University, Daegu, Korea
| | - Hyejin Jeon
- Graduate Student, College of Nursing Science, Kyung Hee University, Seoul, Korea
| | - Heejin Hwang
- Doctoral Candidate, College of Nursing Science, Kyung Hee University, Seoul, Korea
| |
Collapse
|
19
|
Kim JH, Seo Y, Jo M, Jeon H, Kim YS, Kim EJ, Seo D, Lee WH, Kim SR, Yachie N, Zhong Q, Vidal M, Roth FP, Suk K. Interrogation of kinase genetic interactions provides a global view of PAK1-mediated signal transduction pathways. J Biol Chem 2020; 295:16906-16919. [PMID: 33060198 PMCID: PMC7863907 DOI: 10.1074/jbc.ra120.014831] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 09/23/2020] [Indexed: 12/29/2022] Open
Abstract
Kinases are critical components of intracellular signaling pathways and have been extensively investigated with regard to their roles in cancer. p21-activated kinase-1 (PAK1) is a serine/threonine kinase that has been previously implicated in numerous biological processes, such as cell migration, cell cycle progression, cell motility, invasion, and angiogenesis, in glioma and other cancers. However, the signaling network linked to PAK1 is not fully defined. We previously reported a large-scale yeast genetic interaction screen using toxicity as a readout to identify candidate PAK1 genetic interactions. En masse transformation of the PAK1 gene into 4,653 homozygous diploid Saccharomyces cerevisiae yeast deletion mutants identified ∼400 candidates that suppressed yeast toxicity. Here we selected 19 candidate PAK1 genetic interactions that had human orthologs and were expressed in glioma for further examination in mammalian cells, brain slice cultures, and orthotopic glioma models. RNAi and pharmacological inhibition of potential PAK1 interactors confirmed that DPP4, KIF11, mTOR, PKM2, SGPP1, TTK, and YWHAE regulate PAK1-induced cell migration and revealed the importance of genes related to the mitotic spindle, proteolysis, autophagy, and metabolism in PAK1-mediated glioma cell migration, drug resistance, and proliferation. AKT1 was further identified as a downstream mediator of the PAK1-TTK genetic interaction. Taken together, these data provide a global view of PAK1-mediated signal transduction pathways and point to potential new drug targets for glioma therapy.
Collapse
Affiliation(s)
- Jae-Hong Kim
- Department of Pharmacology, Brain Science and Engineering Institute, and Department of Biomedical Sciences, BK21 Plus KNU Biomedical Convergence Program, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Yeojin Seo
- Department of Pharmacology, Brain Science and Engineering Institute, and Department of Biomedical Sciences, BK21 Plus KNU Biomedical Convergence Program, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Myungjin Jo
- Department of Pharmacology, Brain Science and Engineering Institute, and Department of Biomedical Sciences, BK21 Plus KNU Biomedical Convergence Program, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Hyejin Jeon
- Department of Pharmacology, Brain Science and Engineering Institute, and Department of Biomedical Sciences, BK21 Plus KNU Biomedical Convergence Program, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Young-Seop Kim
- Department of Pharmacology, Brain Science and Engineering Institute, and Department of Biomedical Sciences, BK21 Plus KNU Biomedical Convergence Program, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Eun-Jung Kim
- Department of Pharmacology, Brain Science and Engineering Institute, and Department of Biomedical Sciences, BK21 Plus KNU Biomedical Convergence Program, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Donggun Seo
- Department of Pharmacology, Brain Science and Engineering Institute, and Department of Biomedical Sciences, BK21 Plus KNU Biomedical Convergence Program, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Won-Ha Lee
- School of Life Sciences, Brain Korea 21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu, South Korea
| | - Sang Ryong Kim
- School of Life Sciences, Brain Korea 21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu, South Korea
| | - Nozomu Yachie
- Donnelly Centre and Departments of Molecular Genetics and Computer Science, University of Toronto and Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Ontario, Canada
| | - Quan Zhong
- Department of Biological Sciences, Wright State University, Dayton, Ohio, USA
| | - Marc Vidal
- Center for Cancer Systems Biology (CCSB) and Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
| | - Frederick P Roth
- Donnelly Centre and Departments of Molecular Genetics and Computer Science, University of Toronto and Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Ontario, Canada
| | - Kyoungho Suk
- Department of Pharmacology, Brain Science and Engineering Institute, and Department of Biomedical Sciences, BK21 Plus KNU Biomedical Convergence Program, School of Medicine, Kyungpook National University, Daegu, South Korea.
| |
Collapse
|
20
|
Lim DW, Jeon H, Kim M, Yoon M, Jung J, Kwon S, Cho S, Um MY. Standardized rice bran extract improves hepatic steatosis in HepG2 cells and ovariectomized rats. Nutr Res Pract 2020; 14:568-579. [PMID: 33282120 PMCID: PMC7683207 DOI: 10.4162/nrp.2020.14.6.568] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 02/29/2020] [Accepted: 06/25/2020] [Indexed: 12/13/2022] Open
Abstract
BACKGROUD/OBJECTIVES Hepatic steatosis is the most common liver disorder, particularly in postmenopausal women. This study investigated the protective effects of standardized rice bran extract (RBS) on ovariectomized (OVX)-induced hepatic steatosis in rats. MATERIALS/METHODS HepG2 cells were incubated with 200 µM oleic acid to induce lipid accumulation with or without RBS and γ-oryzanol. OVX rats were separated into three groups and fed a normal diet (ND) or the ND containing 17β-estradiol (E2; 10 µg/kg) and RBS (500 mg/kg) for 16 weeks. RESULTS RBS supplementation improved serum triglyceride and free fatty acid levels in OVX rats. Histological analysis showed that RBS significantly attenuated hepatic fat accumulation and decreased hepatic lipid, total cholesterol, and triglyceride levels. Additionally, RBS suppressed the estrogen deficiency-induced upregulation of lipogenic genes, such as sterol regulatory element-binding protein 1 (SREBP1), acetyl-CoA carboxylase 1, fatty acid synthase, glycerol-3-phosphate acyltransferase, and stearoyl-CoA desaturase 1. CONCLUSIONS RBS and γ-oryzanol effectively reduced lipid accumulation in a HepG2 cell hepatic steatosis model. RBS improves OVX-induced hepatic steatosis by regulating the SREBP1-mediated activation of lipogenic genes, suggesting the benefits of RBS in preventing fatty liver in postmenopausal women.
Collapse
Affiliation(s)
- Dong Wook Lim
- Research Division of Food Functionality, Korea Food Research Institute, Wanju 55365, Korea
| | - Hyejin Jeon
- Research Division of Food Functionality, Korea Food Research Institute, Wanju 55365, Korea
| | - Minji Kim
- Division of Food Biotechnology, University of Science & Technology, Daejeon 34113, Korea
| | - Minseok Yoon
- Research Division of Food Functionality, Korea Food Research Institute, Wanju 55365, Korea
| | - Jonghoon Jung
- Technical Assistance Center, Korea Food Research Institute, Wanju 55365, Korea
| | - Sangoh Kwon
- S&D Research and Development Institute, Cheongju 28156, Korea
| | - Suengmok Cho
- Department of Food Science and Technology, Pukyong National University, Busan 48513, Korea
| | - Min Young Um
- Research Division of Food Functionality, Korea Food Research Institute, Wanju 55365, Korea.,Division of Food Biotechnology, University of Science & Technology, Daejeon 34113, Korea
| |
Collapse
|
21
|
Kim JH, Seo Y, Jo M, Jeon H, Lee WH, Yachie N, Zhong Q, Vidal M, Roth FP, Suk K. Yeast-Based Genetic Interaction Analysis of Human Kinome. Cells 2020; 9:cells9051156. [PMID: 32392905 PMCID: PMC7291280 DOI: 10.3390/cells9051156] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 04/24/2020] [Accepted: 05/04/2020] [Indexed: 12/17/2022] Open
Abstract
Kinases are critical intracellular signaling proteins. To better understand kinase-mediated signal transduction, a large-scale human-yeast genetic interaction screen was performed. Among 597 human kinase genes tested, 28 displayed strong toxicity in yeast when overexpressed. En masse transformation of these toxic kinase genes into 4653 homozygous diploid yeast deletion mutants followed by barcode sequencing identified yeast toxicity modifiers and thus their human orthologs. Subsequent network analyses and functional grouping revealed that the 28 kinases and their 676 interaction partners (corresponding to a total of 969 genetic interactions) are enriched in cell death and survival (34%), small-molecule biochemistry (18%) and molecular transport (11%), among others. In the subnetwork analyses, a few kinases were commonly associated with glioma, cell migration and cell death/survival. Our analysis enabled the creation of a first draft of the kinase genetic interactome network and identified multiple drug targets for inflammatory diseases and cancer, in which deregulated kinase signaling plays a pathogenic role.
Collapse
Affiliation(s)
- Jae-Hong Kim
- Department of Pharmacology, Brain Science and Engineering Institute, and Department of Biomedical Sciences, BK21 Plus KNU Biomedical Convergence Program, School of Medicine, Kyungpook National University, Daegu 41944, Korea; (J.-H.K.); (Y.S.); (M.J.); (H.J.)
| | - Yeojin Seo
- Department of Pharmacology, Brain Science and Engineering Institute, and Department of Biomedical Sciences, BK21 Plus KNU Biomedical Convergence Program, School of Medicine, Kyungpook National University, Daegu 41944, Korea; (J.-H.K.); (Y.S.); (M.J.); (H.J.)
| | - Myungjin Jo
- Department of Pharmacology, Brain Science and Engineering Institute, and Department of Biomedical Sciences, BK21 Plus KNU Biomedical Convergence Program, School of Medicine, Kyungpook National University, Daegu 41944, Korea; (J.-H.K.); (Y.S.); (M.J.); (H.J.)
| | - Hyejin Jeon
- Department of Pharmacology, Brain Science and Engineering Institute, and Department of Biomedical Sciences, BK21 Plus KNU Biomedical Convergence Program, School of Medicine, Kyungpook National University, Daegu 41944, Korea; (J.-H.K.); (Y.S.); (M.J.); (H.J.)
| | - Won-Ha Lee
- School of Life Sciences, Brain Korea 21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu 41566, Korea;
| | - Nozomu Yachie
- Donnelly Centre and Departments of Molecular Genetics and Computer Science, University of Toronto and Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, ON M5G 1X5, Canada; (N.Y.); (F.P.R.)
| | - Quan Zhong
- Department of Biological Sciences, Wright State University, Dayton, OH 45435, USA;
| | - Marc Vidal
- Center for Cancer Systems Biology (CCSB) and Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA 02215, USA;
| | - Frederick P. Roth
- Donnelly Centre and Departments of Molecular Genetics and Computer Science, University of Toronto and Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, ON M5G 1X5, Canada; (N.Y.); (F.P.R.)
| | - Kyoungho Suk
- Department of Pharmacology, Brain Science and Engineering Institute, and Department of Biomedical Sciences, BK21 Plus KNU Biomedical Convergence Program, School of Medicine, Kyungpook National University, Daegu 41944, Korea; (J.-H.K.); (Y.S.); (M.J.); (H.J.)
- Correspondence:
| |
Collapse
|
22
|
Affiliation(s)
- D H Jeong
- Department of Surgery, Trinity School of Medicine, Ribishi, Saint Vincent
| | - H Jeon
- Department of Surgery, Trinity School of Medicine, Ribishi, Saint Vincent
| | - K Adkins
- Department of Surgery, Trinity School of Medicine, Ribishi, Saint Vincent
| |
Collapse
|
23
|
Ghosh S, Jeon H, Jung C. Foraging behaviour and preference of pollen sources by honey bee (Apis mellifera) relative to protein contents. ACTA ACUST UNITED AC 2020. [DOI: 10.1186/s41610-020-0149-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Abstract
Background
Pollen is an important source of protein and lipids for many animals including honey bees. In order to understand the foraging behaviour of honey bee colonies and preference among the available floral resources, pollen collections from three experimental healthy colonies of honey bees were analysed in the month of June.
Results
The amount of pollen collections were related to the colony’s need which was indicated by the number of larval and adult bees present in the hive. Interesting was the sequence of pollen collection from different floral sources. All honey bee colonies collected pollens from Trifolium repens first, then Erigeron annus and the third choice was Coreopsis drummondii and Oenothera biennis flowers. Total protein content of Trifolium pollen was the highest (20.0 g/100 g DM), and the others were in the range of 8.9–11.4 g/100 g DM.
Conclusion
The results indicated that the first criteria for honey bee foraging preference of pollens would be the nutritional contents of protein and the resource availability of the lesser nutritious floral sources. This information can help pollinator protection programmes of habitat manipulation using flowering plants for nectar and pollen sources.
Collapse
|
24
|
Na SH, Oh MH, Jeon H, Lee YK, Lee B, Shin M, Lee JC. Imaging of bioluminescent Acinetobacter baumannii in a mouse pneumonia model. Microb Pathog 2019; 137:103784. [PMID: 31600538 DOI: 10.1016/j.micpath.2019.103784] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 10/04/2019] [Accepted: 10/07/2019] [Indexed: 02/08/2023]
Abstract
Bioluminescence imaging is a non-invasive tool for in vivo real-time monitoring of infectious disease progression in animal models. However, no bioluminescence imaging assay has been developed to monitor Acinetobacter baumannii infections. In the current study, bioluminescent strains of A. baumannii ATCC 17978 and its isogenic ΔompA mutant were constructed by integrating the promoter of the ompA gene and the luxCDABE luciferase gene into the bacterial chromosome. In an acute murine pneumonia model, bioluminescence of the two reporter strains was clearly visible in the lungs and the bioluminescent signal increased over time. Bioluminescence was correlated with bacterial burden and histopathology in reporter strain-infected mice, suggesting that bioluminescent bacteria are useful for monitoring A. baumannii infections in animal models.
Collapse
Affiliation(s)
- Seok Hyeon Na
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Man Hwan Oh
- Department of Nanobiomedical Science, Dankook University, Cheonan, South Korea
| | - Hyejin Jeon
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Yun-Ki Lee
- Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Daegu, 41944, South Korea; BK21 Plus KNU Biomedical Convergence Program, School of Medicine, Kyungpook National University, Daegu, 41944, South Korea
| | - Byungheon Lee
- Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Daegu, 41944, South Korea; BK21 Plus KNU Biomedical Convergence Program, School of Medicine, Kyungpook National University, Daegu, 41944, South Korea
| | - Minsang Shin
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Je Chul Lee
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu, South Korea.
| |
Collapse
|
25
|
Kim E, Jeon H, Choi S, Kim S, Lee J, Choi H, Keum B, Chun H, Lee H, Kim C, Jang S. Endoscopic submucosal dissection using an detachable robotic assitive device in a live porcine model. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz155.294] [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: 11/14/2022] Open
|
26
|
Kwon HI, Jeong NH, Kim SY, Kim MH, Son JH, Jun SH, Kim S, Jeon H, Kang SC, Kim SH, Lee JC. Inhibitory effects of thymol on the cytotoxicity and inflammatory responses induced by Staphylococcus aureus extracellular vesicles in cultured keratinocytes. Microb Pathog 2019; 134:103603. [PMID: 31226290 DOI: 10.1016/j.micpath.2019.103603] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 06/15/2019] [Accepted: 06/17/2019] [Indexed: 12/08/2022]
Abstract
Staphylococcus aureus extracellular vesicles (EVs) deliver effector molecules to host cells and induce host cell pathology. This study investigated the disruption of S. aureus EVs by thymol along with its inhibitory effects on the cytotoxicity and inflammatory responses induced by EVs derived from two different S. aureus strains in cultured keratinocytes. Membrane disruption of the S. aureus EVs treated with thymol was determined using transmission electron microscopy. Human keratinocyte HaCaT cells were incubated with either intact or thymol-treated S. aureus EVs and then analyzed for cytotoxicity and pro-inflammatory cytokine gene expression. Thymol inhibited the growth of S. aureus strains and disrupted the membranes of the S. aureus EVs. The cytotoxicity and the expression levels of the pro-inflammatory cytokine genes towards HaCaT cells differed between the EVs derived from two S. aureus strains. Thymol-treated S. aureus EVs inhibited the cytotoxicity and the expression of the pro-inflammatory cytokine genes when compared to intact S. aureus EVs. Thymol-treated S. aureus EVs delivered lesser amounts of the EV component to host cells than intact EVs. Our results suggest that the thymol-induced disruption of the S. aureus EVs inhibits the delivery of effector molecules to host cells, resulting in the suppression of cytotoxicity and inflammatory responses in keratinocytes. Thymol may attenuate the host cell pathology induced by an S. aureus infection via both the antimicrobial activity against the bacteria and the disruption of the secreted EVs.
Collapse
Affiliation(s)
- Hyo Il Kwon
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Na Hee Jeong
- CMRI, Department of Pharmacology, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Se Yeon Kim
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Mi Hyun Kim
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Joo Hee Son
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - So Hyun Jun
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Shukho Kim
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Hyejin Jeon
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Sun Chul Kang
- Department of Biotechnology, Daegu University, Gyungbuk, South Korea
| | - Sang Hyun Kim
- CMRI, Department of Pharmacology, School of Medicine, Kyungpook National University, Daegu, South Korea.
| | - Je Chul Lee
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu, South Korea.
| |
Collapse
|
27
|
Jeon S, Jang Y, Min J, Kim D, Jeon H. Doxorubicin-loaded oligonucleotide conjugated gold nanoparticles: A promising drug delivery system for ovarian cancer. Gynecol Oncol 2019. [DOI: 10.1016/j.ygyno.2019.04.233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
28
|
Cho HR, Jeon H, Park CK, Park SH, Choi SH. Radiogenomics Profiling for Glioblastoma-related Immune Cells Reveals CD49d Expression Correlation with MRI parameters and Prognosis. Sci Rep 2018; 8:16022. [PMID: 30375429 PMCID: PMC6207678 DOI: 10.1038/s41598-018-34242-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 10/10/2018] [Indexed: 12/22/2022] Open
Abstract
Although there have been a plethora of radiogenomics studies related to glioblastoma (GBM), most of them only used genomic information from tumor cells. In this study, we used radiogenomics profiling to identify MRI-associated immune cell markers in GBM, which was also correlated with prognosis. Expression levels of immune cell markers were correlated with quantitative MRI parameters in a total of 60 GBM patients. Fourteen immune cell markers (i.e., CD11b, CD68, CSF1R, CD163, CD33, CD123, CD83, CD63, CD49d and CD117 for myeloid cells, and CD4, CD3e, CD25 and CD8 for lymphoid cells) were selected for RNA-level analysis using quantitative RT-PCR. For MRI analysis, quantitative MRI parameters from FLAIR, contrast-enhanced (CE) T1WI, dynamic susceptibility contrast perfusion MRI and diffusion-weighted images were used. In addition, PFS associated with interesting mRNA data was performed by Kaplan-Meier survival analysis. CD163, which marks tumor associated microglia/macrophages (TAMs), showed the highest expression level in GBM patients. CD68 (TAMs), CSF1R (TAMs), CD33 (myeloid-derived suppressor cell) and CD4 (helper T cell, regulatory T cell) levels were highly positively correlated with nCBV values, while CD3e (helper T cell, cytotoxic T cell) and CD49d showed a significantly negative correlation with apparent diffusion coefficient (ADC) values. Moreover, regardless of any other molecular characteristics, CD49d was revealed as one independent factor for PFS of GBM patients by Cox proportional-hazards regression analysis (P = 0.0002). CD49d expression level CD49d correlated with ADC can be considered as a candidate biomarker to predict progression of GBM patients.
Collapse
Affiliation(s)
- Hye Rim Cho
- Department of Radiology, Seoul National University Hospital, Seoul, Korea.,Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, Korea
| | - Hyejin Jeon
- Department of Radiology, Seoul National University Hospital, Seoul, Korea.,Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, Korea
| | - Chul-Kee Park
- Department of Neurosurgery, Seoul National University Hospital, Seoul, Korea
| | - Sung-Hye Park
- Department of Pathology, Seoul National University Hospital, Seoul, Korea
| | - Seung Hong Choi
- Department of Radiology, Seoul National University Hospital, Seoul, Korea. .,Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, Korea.
| |
Collapse
|
29
|
Kim S, Yi S, Oh M, Jang BG, Nam W, Yoo YC, Lee M, Jeon H, Zoh I, Lee H, Zhang C, Kim KH, Seo J, Shim JH, Chae J, Kuk Y. Surface reconstruction and charge modulation in BaFe 2As 2 superconducting film. J Phys Condens Matter 2018; 30:315001. [PMID: 29916822 DOI: 10.1088/1361-648x/aacd85] [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] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Whether or not epitaxially grown superconducting films have the same bulk-like superconducting properties is an important concern. We report the structure and the electronic properties of epitaxially grown Ba(Fe1-x Co x )2As2 films using scanning tunneling microscopy and scanning tunneling spectroscopy (STS). This film showed a different surface structure, [Formula: see text]R45° reconstruction, from those of as-cleaved surfaces from bulk crystals. The electronic structure of the grown film is different from that in bulk, and it is notable that the film exhibits the same superconducting transport properties. We found that the superconducting gap at the surface is screened at the Ba layer surface in STS measurements, and the charge density wave was observed at the surface in sample in the superconducting state.
Collapse
Affiliation(s)
- S Kim
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
30
|
Jeon H, Chun H, Keum B, Lee J, Choi S, Kim S, Lee J, Choi H, Kim E, Jeen Y, Lee H, Kim C. Endoscopic detachable auxiliary manipulator in endoscopic submucosal dissection: Animal model studY. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy151.130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
31
|
Choi H, Bang Y, Jeon H, Yoon I. 0506 A Validation Study Of Three Screening Questionnaires For Obstructive Sleep Apnea In A Community Sample. Sleep 2018. [DOI: 10.1093/sleep/zsy061.505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- H Choi
- Seoul National University Bundang Hospital, Seongnam, KOREA, REPUBLIC OF
| | - Y Bang
- Seoul National University Bundang Hospital, Seongnam, KOREA, REPUBLIC OF
| | - H Jeon
- Konkuk University Medical Center, Seoul, KOREA, REPUBLIC OF
| | - I Yoon
- Seoul National University Bundang Hospital, Seongnam, KOREA, REPUBLIC OF
| |
Collapse
|
32
|
Kwon HI, Jeong NH, Jun SH, Son JH, Kim S, Jeon H, Kang SC, Kim SH, Lee JC. Thymol attenuates the worsening of atopic dermatitis induced by Staphylococcus aureus membrane vesicles. Int Immunopharmacol 2018; 59:301-309. [PMID: 29679854 DOI: 10.1016/j.intimp.2018.04.027] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 03/30/2018] [Accepted: 04/13/2018] [Indexed: 12/16/2022]
Abstract
Staphylococcus aureus membrane vesicles (MVs) aggravate atopic dermatitis (AD) through the delivery of bacterial effector molecules to host cells and the stimulation of inflammatory responses. This study investigated the inhibitory effect of thymol, a phenolic monoterpene found in essential oils derived from plants, on the worsening of AD induced by S. aureus MVs both in vitro and in vivo. The sub-minimal inhibitory concentrations of thymol disrupted S. aureus MVs. Intact S. aureus MVs induced the expression of pro-inflammatory cytokine (interleukin (IL)-1β, IL-6, and tumor necrosis factor-α) and chemokine (IL-8 and monocyte chemoattractant protein-1) genes in cultured keratinocytes, whereas thymol-treated S. aureus MVs did not stimulate the expression of these genes. Topical application of thymol-treated S. aureus MVs or treatment with thymol after intact S. aureus MVs to AD-like skin lesions diminished the pathology of AD. This included decreases in epidermal/dermal thickness and infiltration of eosinophils/mast cells, and inhibited expression of pro-inflammatory cytokine and chemokine genes in mouse AD model. Moreover, thymol significantly suppressed the Th1, Th2, and Th17-mediated inflammatory responses in AD-like skin lesions induced by S. aureus MVs, and reduced the serum levels of immunoglobulin (Ig) G2a, mite-specific IgE, and total IgE. In summary, thymol disrupts S. aureus MVs and suppresses inflammatory responses in AD-like skin lesions aggravated by S. aureus MVs. Our results suggest that thymol is a possible candidate for the management of AD aggravation induced by S. aureus colonization or infection in the lesions.
Collapse
Affiliation(s)
- Hyo Il Kwon
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Na Hee Jeong
- CMRI, Department of Pharmacology, School of Medicine, Kyungpook National University Daegu, Republic of Korea
| | - So Hyun Jun
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Joo Hee Son
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Shukho Kim
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Hyejin Jeon
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Sun Chul Kang
- Department of Biotechnology, Daegu University, Gyungbuk, Republic of Korea
| | - Sang Hyun Kim
- CMRI, Department of Pharmacology, School of Medicine, Kyungpook National University Daegu, Republic of Korea.
| | - Je Chul Lee
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea.
| |
Collapse
|
33
|
Jeon H, Kim S, Kim MH, Kim SY, Nam D, Park SC, Park SH, Bae H, Lee HJ, Cho JH, Lee WK, Lee YC, Lee SH, Shin MS, Lee JC. Molecular epidemiology of carbapenem-resistant Acinetobacter baumannii isolates from a Korean hospital that carry blaOXA-23. Infection, Genetics and Evolution 2018; 58:232-236. [DOI: 10.1016/j.meegid.2018.01.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 12/20/2017] [Accepted: 01/04/2018] [Indexed: 10/18/2022]
|
34
|
Thakur N, Kumari N, Jeon H, Chung J, Cho HR, Choi SH. DDIS-10. COMPARISON OF CEST AND DWI TO EVALUATE EARLY RESPONSE OF NITROXOLINE TREATMENT IN TEMOZOLOMIDE-RESISTANT GLIOBLASTOMA MODEL. Neuro Oncol 2017. [DOI: 10.1093/neuonc/nox168.246] [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: 11/14/2022] Open
|
35
|
Jeon H, Cho HR, Park CK, Park SH, Kumarir N, Thakur N, Chung J, Choi SH. NIMG-65. CD49d CORRELATED WITH APPARENT DIFFUSION COEFFICIENT AS A PROMISING BIOMARKER FOR PROGNOSIS PREDICTION OF GLIOBLASTOMA: RADIOGENOMICS STUDY. Neuro Oncol 2017. [DOI: 10.1093/neuonc/nox168.638] [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: 11/14/2022] Open
|
36
|
Kumari N, Cho HR, Jeon H, Thakur N, Chung J, Choi SH. DDIS-04. NITROXOLINE EXHIBIT ANTICANCER ACTIVITY INDUCING APOPTOSIS IN A TEMOZOLOMIDE-RESISTANT GLIOBLASTOMA. Neuro Oncol 2017. [DOI: 10.1093/neuonc/nox168.240] [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
|
37
|
Lee S, Jeon H. Prognostic significance of ferritin-to-hemoglobin ratios for survival in patients with advanced non-small cell lung cancer. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx671.053] [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
|
38
|
Lee MO, Jeon H, Son MY, Lee SC, Cho YS. Clump-passaging-based efficient 3D culture of human pluripotent stem cells under chemically defined conditions. Biochem Biophys Res Commun 2017; 493:723-730. [PMID: 28859981 DOI: 10.1016/j.bbrc.2017.08.124] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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: 08/16/2017] [Accepted: 08/28/2017] [Indexed: 12/27/2022]
Abstract
Large-scale production of human pluripotent stem cells (hPSCs) in an efficient and safe manner is crucial to the successful application of hPSCs in biomedical research and regenerative medicine. Three-dimensional culture methods for hPSCs have been extensively studied using single-cell passaging approaches; however, these techniques have been challenged by the induction of massive cell death and accumulation of genomic abnormalities. In this work, we developed and optimized a novel, simple clump-passaging method for in vitro hPSCs 3-dimensional (3D) culture that can be exploited for large-scale production. Fully grown hPSC spheroids were dissociated into smaller-sized spheroid clumps by simple treatment with enzyme-free dissociation buffer, and clumped hPSCs were inoculated and maintained for 3D suspension culture. Our clump-passaging method effectively increased the hPSCs survival rate after subculture and supported scalable hPSCs 3D expansion. We also tested and selected chemically defined media formulations that are suitable for 3D culture and commercially available. Overall, our clump-passaging and expansion method demonstrated high survival and expansion rates for hPSC spheroids compared with conventional methods and may also have the advantage of maintaining genomic stability.
Collapse
Affiliation(s)
- Mi-Ok Lee
- Stem Cell Research Laboratory, Immunotherapy Convergence Research Center, KRIBB, Daejeon, Republic of Korea.
| | - Hyejin Jeon
- Stem Cell Research Laboratory, Immunotherapy Convergence Research Center, KRIBB, Daejeon, Republic of Korea.
| | - Mi-Young Son
- Stem Cell Research Center, KRIBB, Daejeon, Republic of Korea; Department of Bioscience, KRIBB School, University of Science & Technology, Daejeon, Republic of Korea.
| | - Sang Chul Lee
- Research Center for Metabolic Regulation, KRIBB, Daejeon, Republic of Korea.
| | - Yee Sook Cho
- Stem Cell Research Laboratory, Immunotherapy Convergence Research Center, KRIBB, Daejeon, Republic of Korea; Department of Bioscience, KRIBB School, University of Science & Technology, Daejeon, Republic of Korea.
| |
Collapse
|
39
|
Song GJ, Jeon H, Seo M, Jo M, Suk K. Interaction between optineurin and Rab1a regulates autophagosome formation in neuroblastoma cells. J Neurosci Res 2017; 96:407-415. [DOI: 10.1002/jnr.24143] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 07/21/2017] [Accepted: 08/01/2017] [Indexed: 12/21/2022]
Affiliation(s)
- Gyun Jee Song
- Department of Pharmacology; Brain Science & Engineering Institute, BK21 Plus KNU Biomedical Convergence Program, Kyungpook National University School of Medicine; Daegu Republic of Korea
| | - Hyejin Jeon
- Department of Pharmacology; Brain Science & Engineering Institute, BK21 Plus KNU Biomedical Convergence Program, Kyungpook National University School of Medicine; Daegu Republic of Korea
| | - Minchul Seo
- Department of Pharmacology; Brain Science & Engineering Institute, BK21 Plus KNU Biomedical Convergence Program, Kyungpook National University School of Medicine; Daegu Republic of Korea
| | - Myungjin Jo
- Department of Pharmacology; Brain Science & Engineering Institute, BK21 Plus KNU Biomedical Convergence Program, Kyungpook National University School of Medicine; Daegu Republic of Korea
| | - Kyoungho Suk
- Department of Pharmacology; Brain Science & Engineering Institute, BK21 Plus KNU Biomedical Convergence Program, Kyungpook National University School of Medicine; Daegu Republic of Korea
| |
Collapse
|
40
|
Kim J, Cho HR, Jeon H, Kim D, Song C, Lee N, Choi SH, Hyeon T. Continuous O2-Evolving MnFe2O4 Nanoparticle-Anchored Mesoporous Silica Nanoparticles for Efficient Photodynamic Therapy in Hypoxic Cancer. J Am Chem Soc 2017; 139:10992-10995. [DOI: 10.1021/jacs.7b05559] [Citation(s) in RCA: 514] [Impact Index Per Article: 73.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Jonghoon Kim
- Center
for Nanoparticle Research, Institute of Basic Science (IBS), Seoul 08826, Republic of Korea
- School
of Chemical and Biological Engineering, and Institute of Chemical
Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Hye Rim Cho
- Center
for Nanoparticle Research, Institute of Basic Science (IBS), Seoul 08826, Republic of Korea
- Department
of Radiology, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Hyejin Jeon
- Center
for Nanoparticle Research, Institute of Basic Science (IBS), Seoul 08826, Republic of Korea
- Department
of Radiology, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Dokyoon Kim
- Center
for Nanoparticle Research, Institute of Basic Science (IBS), Seoul 08826, Republic of Korea
- School
of Chemical and Biological Engineering, and Institute of Chemical
Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Changyeong Song
- Center
for Nanoparticle Research, Institute of Basic Science (IBS), Seoul 08826, Republic of Korea
- School
of Chemical and Biological Engineering, and Institute of Chemical
Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Nohyun Lee
- School
of
Advanced Materials Engineering, Kookmin University, Seoul 02707, Republic of Korea
| | - Seung Hong Choi
- Center
for Nanoparticle Research, Institute of Basic Science (IBS), Seoul 08826, Republic of Korea
- Department
of Radiology, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Taeghwan Hyeon
- Center
for Nanoparticle Research, Institute of Basic Science (IBS), Seoul 08826, Republic of Korea
- School
of Chemical and Biological Engineering, and Institute of Chemical
Processes, Seoul National University, Seoul 08826, Republic of Korea
| |
Collapse
|
41
|
JoungSun P, Pyo J, Jeon H, Kim Y, Yoo M. DNA DAMAGE RESPONSE IS ESSENTIAL FOR THE MAINTENANCE OF INTESTINAL HOMEOSTASIS WITH AGE. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.551] [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: 11/12/2022] Open
Affiliation(s)
- P. JoungSun
- Pusan National University, Busan, Korea (the Republic of)
| | - J. Pyo
- Pusan National University, Busan, Korea (the Republic of)
| | - H. Jeon
- Pusan National University, Busan, Korea (the Republic of)
| | - Y. Kim
- Pusan National University, Busan, Korea (the Republic of)
| | - M. Yoo
- Pusan National University, Busan, Korea (the Republic of)
| |
Collapse
|
42
|
Jo M, Chung AY, Yachie N, Seo M, Jeon H, Nam Y, Seo Y, Kim E, Zhong Q, Vidal M, Park HC, Roth FP, Suk K. Yeast genetic interaction screen of human genes associated with amyotrophic lateral sclerosis: identification of MAP2K5 kinase as a potential drug target. Genome Res 2017; 27:1487-1500. [PMID: 28596290 PMCID: PMC5580709 DOI: 10.1101/gr.211649.116] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 06/06/2017] [Indexed: 12/13/2022]
Abstract
To understand disease mechanisms, a large-scale analysis of human–yeast genetic interactions was performed. Of 1305 human disease genes assayed, 20 genes exhibited strong toxicity in yeast. Human–yeast genetic interactions were identified by en masse transformation of the human disease genes into a pool of 4653 homozygous diploid yeast deletion mutants with unique barcode sequences, followed by multiplexed barcode sequencing to identify yeast toxicity modifiers. Subsequent network analyses focusing on amyotrophic lateral sclerosis (ALS)-associated genes, such as optineurin (OPTN) and angiogenin (ANG), showed that the human orthologs of the yeast toxicity modifiers of these ALS genes are enriched for several biological processes, such as cell death, lipid metabolism, and molecular transport. When yeast genetic interaction partners held in common between human OPTN and ANG were validated in mammalian cells and zebrafish, MAP2K5 kinase emerged as a potential drug target for ALS therapy. The toxicity modifiers identified in this study may deepen our understanding of the pathogenic mechanisms of ALS and other devastating diseases.
Collapse
Affiliation(s)
- Myungjin Jo
- Department of Pharmacology, Brain Science and Engineering Institute, and Department of Biomedical Sciences, BK21 Plus KNU Biomedical Convergence Program, Kyungpook National University School of Medicine, Daegu, 41944, Korea
| | - Ah Young Chung
- Department of Biomedical Sciences, Korea University Ansan Hospital, Ansan-si, Gyeonggi-do, 425-707, Korea
| | - Nozomu Yachie
- Donnelly Centre and Departments of Molecular Genetics and Computer Science, University of Toronto and Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Ontario M5G 1X5, Canada
| | - Minchul Seo
- Department of Pharmacology, Brain Science and Engineering Institute, and Department of Biomedical Sciences, BK21 Plus KNU Biomedical Convergence Program, Kyungpook National University School of Medicine, Daegu, 41944, Korea
| | - Hyejin Jeon
- Department of Pharmacology, Brain Science and Engineering Institute, and Department of Biomedical Sciences, BK21 Plus KNU Biomedical Convergence Program, Kyungpook National University School of Medicine, Daegu, 41944, Korea
| | - Youngpyo Nam
- Department of Pharmacology, Brain Science and Engineering Institute, and Department of Biomedical Sciences, BK21 Plus KNU Biomedical Convergence Program, Kyungpook National University School of Medicine, Daegu, 41944, Korea
| | - Yeojin Seo
- Department of Pharmacology, Brain Science and Engineering Institute, and Department of Biomedical Sciences, BK21 Plus KNU Biomedical Convergence Program, Kyungpook National University School of Medicine, Daegu, 41944, Korea
| | - Eunmi Kim
- Department of Biomedical Sciences, Korea University Ansan Hospital, Ansan-si, Gyeonggi-do, 425-707, Korea
| | - Quan Zhong
- Department of Biological Sciences, Wright State University, Dayton, Ohio 45435, USA
| | - Marc Vidal
- Department of Biological Sciences, Wright State University, Dayton, Ohio 45435, USA
| | - Hae Chul Park
- Department of Biomedical Sciences, Korea University Ansan Hospital, Ansan-si, Gyeonggi-do, 425-707, Korea
| | - Frederick P Roth
- Donnelly Centre and Departments of Molecular Genetics and Computer Science, University of Toronto and Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Ontario M5G 1X5, Canada.,Canadian Institute for Advanced Research, Toronto, Ontario M5G 1Z8, Canada
| | - Kyoungho Suk
- Department of Pharmacology, Brain Science and Engineering Institute, and Department of Biomedical Sciences, BK21 Plus KNU Biomedical Convergence Program, Kyungpook National University School of Medicine, Daegu, 41944, Korea
| |
Collapse
|
43
|
Jeon H, Bang Y, Yoon I. 0700 DIFFERENTIAL EFFECTS OF CIRCADIAN TYPOLOGY ON SLEEP, FATIGUE, MOOD, AND QUALITY OF LIFE. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.699] [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: 11/14/2022] Open
|
44
|
Bang Y, Jeon H, Yoon I. 0354 EFFECTIVENESS OF LOW-FREQUENCY ELECTRICAL STIMULATION ON PATIENTS WITH CHRONIC INSOMNIA. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.353] [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
|
45
|
Shin MS, Lee J, Lee J, Lee J, Kwon E, Jeon H, Lee S. A Preliminary Study of Computerized Cognitive Ability Enhancement Program Using Smart-Toy for Children. Soa Chongsonyon Chongsin Uihak 2017. [DOI: 10.5765/jkacap.2017.28.2.106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- Min-Sup Shin
- Department of Psychiatry and Behavioral Science, Seoul National University College of Medicine, Seoul, Korea
| | - Jungeun Lee
- Department of Child and Adolescent Psychiatry, Seoul National University Hospital, Seoul, Korea
| | - Jihyun Lee
- Department of Child and Adolescent Psychiatry, Seoul National University Hospital, Seoul, Korea
| | - Jinjoo Lee
- Department of Child and Adolescent Psychiatry, Seoul National University Hospital, Seoul, Korea
| | - Eunmi Kwon
- Department of Child and Adolescent Psychiatry, Seoul National University Hospital, Seoul, Korea
| | - Hyejin Jeon
- Department of Child and Adolescent Psychiatry, Seoul National University Hospital, Seoul, Korea
| | - Seunghwan Lee
- Department of Child and Adolescent Psychiatry, Seoul National University Hospital, Seoul, Korea
| |
Collapse
|
46
|
Jeon H, Jang KI, Lee SH. Posttraumatic growth factor in baseline state predicts transcranial direct current stimulation treatment effects in patients with post-traumatic stress patients: An interim analysis. Brain Stimul 2017. [DOI: 10.1016/j.brs.2017.01.289] [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: 10/20/2022] Open
|
47
|
You I, Jeon H, Lee K, Do M, Seo YC, Lee HA, Lee H. Polydopamine coating in organic solvent for material-independent immobilization of water-insoluble molecules and avoidance of substrate hydrolysis. J IND ENG CHEM 2017. [DOI: 10.1016/j.jiec.2016.11.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
48
|
Abstract
Glioblastoma multiforme is one of the deadliest human cancers and is characterized by tumor cells that hijack immune system cells in a deadly symbiotic relationship. Microglia and glioma infiltrating macrophages, which in principle should mount an immune response to the tumor, are subverted by tumor cells to facilitate growth in several ways. In this study, we seek to understand the interactions between the tumor cells and the microglia that enhance tumor growth, and for this purpose, we develop a mathematical and computational model that involves reaction-diffusion equations for the important components in the interaction. These include the densities of tumor and microglial cells, and the concentrations of growth factors and other signaling molecules. We apply this model to a transwell assay used in the laboratory to demonstrate that microglia can stimulate tumor cell invasion by secreting the growth factor TGF- β. We show that the model can both replicate the major components of the experimental findings and make new predictions to guide future experiments aimed at the development of new therapeutic approaches. Sensitivity analysis is used to identify the most important parameters as an aid to future experimental work. This study is the first step in a program that involves development of detailed 3-D models of the mechanical and biochemical interactions between a glioblastoma and the tumor microenvironment.
Collapse
|
49
|
Na SH, Jeon H, Kim YJ, Kwon HI, Selasi GN, Nicholas A, Yun CS, Lee SH, Lee JC. Antimicrobial activity of novel 4H-4-oxoquinolizine compounds against extensively drug-resistant Acinetobacter baumannii strains. Int J Antimicrob Agents 2016; 49:107-111. [PMID: 27908580 DOI: 10.1016/j.ijantimicag.2016.10.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 09/26/2016] [Accepted: 10/01/2016] [Indexed: 10/20/2022]
Abstract
The aim of this study was to screen lead compounds exhibiting potent in vitro antimicrobial activity against multidrug-resistant (MDR) Acinetobacter baumannii strains from a library of chemical compounds. In a high-throughput screening analysis of 7520 compounds representative of 340,000 small molecules, two 4H-4-oxoquinolizine compounds were the most active against A. baumannii ATCC 17978. Subsequent selection and analysis of 70 4H-4-oxoquinolizine compounds revealed that the top 7 compounds were extremely active against extensively drug-resistant (XDR) A. baumannii isolates. These compounds commonly carried a 1-cyclopropyl-7-fluoro-4-oxo-4H-quinolizine-3-carboxylic acid core structure but had different C-8 and/or C-9 moieties. Minimum inhibitory concentrations (MICs) of the seven compounds against fluoroquinolone-resistant A. baumannii isolates were found to be in the range of 0.02-1.70 µg/mL regardless of the mutation types in the quinolone resistance-determining region (QRDR) of GyrA and ParC. Cytotoxicity of the seven compounds was observed in HeLa and U937 cells at a concentration of 50 µg/mL, which was >32.5- to 119-fold higher than the MIC90 for A. baumannii isolates. In conclusion, novel 4H-4-oxoquinolizine compounds represent a promising scaffold on which to develop antimicrobial agents against drug-resistant A. baumannii strains.
Collapse
Affiliation(s)
- Seok Hyeon Na
- Department of Microbiology, Kyungpook National University School of Medicine, 680 Gukchaebosang-ro, Jung-gu, Daegu 41944, South Korea
| | - Hyejin Jeon
- Department of Microbiology, Kyungpook National University School of Medicine, 680 Gukchaebosang-ro, Jung-gu, Daegu 41944, South Korea
| | - Yoo Jeong Kim
- Department of Microbiology, Kyungpook National University School of Medicine, 680 Gukchaebosang-ro, Jung-gu, Daegu 41944, South Korea
| | - Hyo Il Kwon
- Department of Microbiology, Kyungpook National University School of Medicine, 680 Gukchaebosang-ro, Jung-gu, Daegu 41944, South Korea
| | - Gati Noble Selasi
- Department of Microbiology, Kyungpook National University School of Medicine, 680 Gukchaebosang-ro, Jung-gu, Daegu 41944, South Korea
| | - Asiimwe Nicholas
- Department of Microbiology, Kyungpook National University School of Medicine, 680 Gukchaebosang-ro, Jung-gu, Daegu 41944, South Korea
| | - Chang-Soo Yun
- Bio & Drug Discovery Division, Korea Research Institute of Chemical Technology, Daejeon 34114, South Korea
| | - Sang Ho Lee
- Bio & Drug Discovery Division, Korea Research Institute of Chemical Technology, Daejeon 34114, South Korea
| | - Je Chul Lee
- Department of Microbiology, Kyungpook National University School of Medicine, 680 Gukchaebosang-ro, Jung-gu, Daegu 41944, South Korea.
| |
Collapse
|
50
|
Jeon H, Ma SH, Jo HJ, Woo MS, An H, Park H, Kwon C, Kim Y, Lee JC. Long-term persistence of sequence type 89 methicillin-resistant Staphylococcus aureus isolated from cases of staphylococcal scalded skin syndrome in a Korean community. J Med Microbiol 2016; 65:1542-1544. [PMID: 27902366 DOI: 10.1099/jmm.0.000373] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Hyejin Jeon
- Department of Microbiology, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Sang Hyuk Ma
- Department of Pediatrics, Changwon Fatima Hospital, Changwon, Kyungnam, Republic of Korea
| | - Hyun Jin Jo
- Department of Microbiology, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Min-Seok Woo
- Department of Microbiology, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Hyeonjun An
- Department of Microbiology, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Hyungsik Park
- Department of Microbiology, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Choongeun Kwon
- Department of Microbiology, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Youjeong Kim
- Department of Microbiology, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Je Chul Lee
- Department of Microbiology, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| |
Collapse
|