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Wang L, Maharjan CK, Borcherding N, Master RP, Mo J, Tithi TI, Kim MC, Carelock ME, Master AP, Gibson-Corley KN, Kolb RH, Smith KA, Zhang W. Epithelial IL-2 is critical for NK cell-mediated cancer immunosurveillance in mammary glands. bioRxiv 2024:2024.04.25.591178. [PMID: 38712046 PMCID: PMC11071474 DOI: 10.1101/2024.04.25.591178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Interleukin 2 (IL-2) is the first identified cytokine and its interaction with receptors has been known to shape the immune responses in many lymphoid or non-lymphoid tissues for more than four decades. Active T cells are the primary cellular source for IL-2 production and epithelial cells have never been considered the major cellular source of IL-2 under physiological conditions. It is, however, tempting to speculate that epithelial cells could potentially express IL-2 that regulates the intricate interactions between epithelial cells and lymphocytes. Datamining our recently published single-cell RNAseq in the mouse mammary gland identified IL-2 expression in mammary epithelial cells, which is induced by prolactin via the STAT5 signaling pathway. Furthermore, epithelial IL-2 plays a crucial role in maintaining the physiological functions of natural killer (NK) cells within the mammary glands. IL-2 deletion in the mammary epithelial cells leads to a significant reduction in the number and function of NK cells, which in turn results in defective immunosurveillance, expansion of luminal epithelial cells, and tumor development. Interestingly, T cells in the mammary glands are not changed, indicating the specific regulation of NK cells by epithelial IL-2 production. In agreement, we also found that human epithelial cells express IL-2 and NK cells express the highest level of IL2RB among all the immune cells. Here, we provide the first evidence that epithelial cells produce IL-2, which is critical for maintaining the physiological functions of NK cells in immunosurveillance.
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Kim MC, De U, Borcherding N, Wang L, Paek J, Bhattacharyya I, Yu Q, Kolb R, Drashansky T, Thatayatikom A, Zhang W, Cha S. Single-cell transcriptomics unveil profiles and interplay of immune subsets in rare autoimmune childhood Sjögren's disease. Commun Biol 2024; 7:481. [PMID: 38641668 PMCID: PMC11031574 DOI: 10.1038/s42003-024-06124-6] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 03/29/2024] [Indexed: 04/21/2024] Open
Abstract
Childhood Sjögren's disease represents critically unmet medical needs due to a complete lack of immunological and molecular characterizations. This study presents key immune cell subsets and their interactions in the periphery in childhood Sjögren's disease. Here we show that single-cell RNA sequencing identifies the subsets of IFN gene-enriched monocytes, CD4+ T effector memory, and XCL1+ NK cells as potential key players in childhood Sjögren's disease, and especially in those with recurrent parotitis, which is the chief symptom prompting clinical visits from young children. A unique cluster of monocytes with type I and II IFN-related genes is identified in childhood Sjögren's disease, compared to the age-matched control. In vitro regulatory T cell functional assay demonstrates intact functionality in childhood Sjögren's disease in contrast to reduced suppression in adult Sjögren's disease. Mapping this transcriptomic landscape and interplay of immune cell subsets will expedite the understanding of childhood Sjögren's disease pathogenesis and set the foundation for precision medicine.
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Affiliation(s)
- Myung-Chul Kim
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida College of Medicine, Gainesville, FL, 32610, USA
- UF Health Cancer Center, University of Florida, Gainesville, FL, 32610, USA
- Diagnostic Laboratory Medicine, College of Veterinary Medicine, Jeju National University, Jeju, 63243, Republic of Korea
- Research Institute of Veterinary Medicine, College of Veterinary Medicine, Jeju National University, Jeju, 63243, Republic of Korea
- Center for Orphaned Autoimmune Disorders, University of Florida College of Dentistry, Gainesville, FL, 32610, USA
| | - Umasankar De
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida College of Medicine, Gainesville, FL, 32610, USA
- UF Health Cancer Center, University of Florida, Gainesville, FL, 32610, USA
| | - Nicholas Borcherding
- Department of Pathology & Immunology, Washington University School of Medicine in St. Louis, St Louis, MO, 63110, USA
| | - Lei Wang
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida College of Medicine, Gainesville, FL, 32610, USA
- UF Health Cancer Center, University of Florida, Gainesville, FL, 32610, USA
| | - Joon Paek
- Center for Orphaned Autoimmune Disorders, University of Florida College of Dentistry, Gainesville, FL, 32610, USA
- Department of Pathology & Immunology, Washington University School of Medicine in St. Louis, St Louis, MO, 63110, USA
| | - Indraneel Bhattacharyya
- Center for Orphaned Autoimmune Disorders, University of Florida College of Dentistry, Gainesville, FL, 32610, USA
- Department of Oral & Maxillofacial Diagnostic Sciences, University of Florida College of Dentistry, Gainesville, FL, 32610, USA
| | - Qing Yu
- The Forsyth Institute, Cambridge, MA, 02142, USA
| | - Ryan Kolb
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida College of Medicine, Gainesville, FL, 32610, USA
- UF Health Cancer Center, University of Florida, Gainesville, FL, 32610, USA
| | | | | | - Weizhou Zhang
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida College of Medicine, Gainesville, FL, 32610, USA.
- UF Health Cancer Center, University of Florida, Gainesville, FL, 32610, USA.
| | - Seunghee Cha
- Center for Orphaned Autoimmune Disorders, University of Florida College of Dentistry, Gainesville, FL, 32610, USA.
- Department of Oral & Maxillofacial Diagnostic Sciences, University of Florida College of Dentistry, Gainesville, FL, 32610, USA.
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Wang L, Xiao Y, Luo Y, Master RP, Mo J, Kim MC, Liu Y, Maharjan CK, Patel UM, De U, Carelock ME, Tithi TI, Li X, Shaffer DR, Guertin KR, Zhuang H, Moser E, Smalley KS, Lv D, Zhou D, Zheng G, Zhang W. PROTAC-mediated NR4A1 degradation as a novel strategy for cancer immunotherapy. J Exp Med 2024; 221:e20231519. [PMID: 38334978 PMCID: PMC10857906 DOI: 10.1084/jem.20231519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 12/01/2023] [Accepted: 01/22/2024] [Indexed: 02/10/2024] Open
Abstract
An effective cancer therapy requires killing cancer cells and targeting the tumor microenvironment (TME). Searching for molecules critical for multiple cell types in the TME, we identified NR4A1 as one such molecule that can maintain the immune suppressive TME. Here, we establish NR4A1 as a valid target for cancer immunotherapy and describe a first-of-its-kind proteolysis-targeting chimera (PROTAC, named NR-V04) against NR4A1. NR-V04 degrades NR4A1 within hours in vitro and exhibits long-lasting NR4A1 degradation in tumors with an excellent safety profile. NR-V04 inhibits and frequently eradicates established tumors. At the mechanistic level, NR-V04 induces the tumor-infiltrating (TI) B cells and effector memory CD8+ T (Tem) cells and reduces monocytic myeloid-derived suppressor cells (m-MDSC), all of which are known to be clinically relevant immune cell populations in human melanomas. Overall, NR-V04-mediated NR4A1 degradation holds promise for enhancing anticancer immune responses and offers a new avenue for treating various types of cancers such as melanoma.
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Affiliation(s)
- Lei Wang
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Yufeng Xiao
- Department of Medicinal Chemistry, College of Pharmacy, University of Florida, Gainesville, FL, USA
| | - Yuewan Luo
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Rohan P. Master
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Jiao Mo
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Myung-Chul Kim
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, USA
- Veterinary Diagnostic Laboratory Medicine, College of Veterinary Medicine, Jeju National University, Jeju-si, South Korea
| | - Yi Liu
- Department of Medicinal Chemistry, College of Pharmacy, University of Florida, Gainesville, FL, USA
| | - Chandra K. Maharjan
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Urvi M. Patel
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Umasankar De
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Madison E. Carelock
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Tanzia Islam Tithi
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, USA
| | | | | | | | - Haoyang Zhuang
- Rheumatology and Clinical Immunology, Department of Medicine, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Emily Moser
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Keiran S.M. Smalley
- Department of Tumor Biology, Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Dongwen Lv
- Department of Biochemistry and Structural Biology, Center of Innovative Drug Discovery, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - Daohong Zhou
- Department of Biochemistry and Structural Biology, Center of Innovative Drug Discovery, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - Guangrong Zheng
- Department of Medicinal Chemistry, College of Pharmacy, University of Florida, Gainesville, FL, USA
- University of Florida Health Cancer Center, University of Florida, Gainesville, FL, USA
| | - Weizhou Zhang
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, USA
- University of Florida Health Cancer Center, University of Florida, Gainesville, FL, USA
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Baek JE, Choi IH, Cho YW, Kim J, Lee YJ, Kim MC, Kim KO, Cho YS. Clinical characteristics and outcomes of Clostridioides difficile infection in the intensive care unit: a KASID multi-centre study. J Hosp Infect 2023; 139:106-112. [PMID: 37451405 DOI: 10.1016/j.jhin.2023.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 07/07/2023] [Accepted: 07/07/2023] [Indexed: 07/18/2023]
Abstract
BACKGROUND Despite the growing clinical and economic burden of Clostridioides difficile infection (CDI), data on CDI in the intensive care unit (ICU) in the Asia-Pacific region are lacking. METHODS This retrospective study analysed 191 patients who were treated with CDI in the ICUs of three hospitals in South Korea from January 2017 to May 2021. Backward-stepwise multiple logistic regression was used to identify factors influencing the treatment response and mortality. RESULTS Fifty-eight patients (30.4%) were considered immunocompromised. The mean Charlson comorbidity index was 5.65 ± 2.39 (10-year survival rate: 21%), the APACHE II score was 20.86 ± 7.78 (mortality rate: 40%), the ATLAS score was 5.45 ± 1.59 (cure rate: 75%), and the SOFA score was 7.97 ± 4.03 (mortality rate: 21.5%). Fifty-eight (30.4%) of the CDI cases were severe and 40 (20.9%) were fulminant. Oral vancomycin or oral metronidazole was the most frequently first-line treatments (N = 57; 32.6%). The 10-day response rate was 59.7% and the eight-week overall mortality rate was 41.4%. Fulminant CDI (OR 0.230; 95% CI 0.085-0.623) and each one-unit increment in the SOFA score (OR 0.848; 95% CI 0.759-0.947) were associated with treatment failure. High APACHE II (OR 0.355; 95% CI 0.143-0.880) and SOFA (OR 0.164; 95% CI 0.061-0.441) scores were associated with higher mortality. CONCLUSIONS High-risk patients in the ICU had a higher mortality rate and a lower cure rate of CDI. Further research is required to provide more accurate prediction scoring systems and better clinical outcomes.
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Affiliation(s)
- J E Baek
- Division of Gastroenterology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - I H Choi
- Division of Gastroenterology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Y W Cho
- Division of Gastroenterology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - J Kim
- Division of Gastroenterology, Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - Y J Lee
- Division of Gastroenterology, Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - M C Kim
- Division of Gastroenterology, Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Republic of Korea
| | - K O Kim
- Division of Gastroenterology, Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Republic of Korea
| | - Y-S Cho
- Division of Gastroenterology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
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Wang L, Xiao Y, Luo Y, Master RP, Mo J, Kim MC, Liu Y, Patel UM, Li X, Shaffer D, Guertin KR, Moser E, Smalley KS, Zhou D, Zheng G, Zhang W. Unleashing the Power of NR4A1 Degradation as a Novel Strategy for Cancer Immunotherapy. bioRxiv 2023:2023.08.09.552650. [PMID: 37609171 PMCID: PMC10441411 DOI: 10.1101/2023.08.09.552650] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
An effective cancer therapy requires both killing cancer cells and targeting tumor-promoting pathways or cell populations within the tumor microenvironment (TME). We purposely search for molecules that are critical for multiple tumor-promoting cell types and identified nuclear receptor subfamily 4 group A member 1 (NR4A1) as one such molecule. NR4A1 has been shown to promote the aggressiveness of cancer cells and maintain the immune suppressive TME. Using genetic and pharmacological approaches, we establish NR4A1 as a valid therapeutic target for cancer therapy. Importantly, we have developed the first-of-its kind proteolysis-targeting chimera (PROTAC, named NR-V04) against NR4A1. NR-V04 effectively degrades NR4A1 within hours of treatment in vitro and sustains for at least 4 days in vivo, exhibiting long-lasting NR4A1-degradation in tumors and an excellent safety profile. NR-V04 leads to robust tumor inhibition and sometimes eradication of established melanoma tumors. At the mechanistic level, we have identified an unexpected novel mechanism via significant induction of tumor-infiltrating (TI) B cells as well as an inhibition of monocytic myeloid derived suppressor cells (m-MDSC), two clinically relevant immune cell populations in human melanomas. Overall, NR-V04-mediated NR4A1 degradation holds promise for enhancing anti-cancer immune responses and offers a new avenue for treating various types of cancer.
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Affiliation(s)
- Lei Wang
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL 32610, USA
| | - Yufeng Xiao
- Department of Medicinal Chemistry, College of Pharmacy, University of Florida, Gainesville, FL 32610, USA
| | - Yuewan Luo
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL 32610, USA
- Current: Biotech Research and Innovation Centre, Department of Health and Medical Sciences, University of Copenhagen, Ole Maaløes Vej 5, Copenhagen N DK-2200, Denmark
| | - Rohan P Master
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL 32610, USA
- Current: College of Medicine, Florida State University, Tallahassee, FL 32306, USA
| | - Jiao Mo
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL 32610, USA
- Current: R & D, Thermo Fisher Scientific, Alachua, FL 32615, USA
| | - Myung-Chul Kim
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL 32610, USA
- Veterinary Diagnostic Laboratory Medicine, College of Veterinary Medicine, Jeju National University, Jeju-si, Jeju-do, South Korea 63243
| | - Yi Liu
- Department of Medicinal Chemistry, College of Pharmacy, University of Florida, Gainesville, FL 32610, USA
| | - Urvi M Patel
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL 32610, USA
| | | | | | - Kevin R Guertin
- Sanofi Integrated Drug Discovery, Sanofi, Cambridge, MA 01890
| | - Emily Moser
- Division of Pulmonary, Critical Care & Sleep Medicine, Department of Medicine, the College of Medicine, University of Florida, Gainesville, FL 32610, USA
| | - Keiran S Smalley
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL 32610, USA
- Department of Medicinal Chemistry, College of Pharmacy, University of Florida, Gainesville, FL 32610, USA
- Current: Biotech Research and Innovation Centre, Department of Health and Medical Sciences, University of Copenhagen, Ole Maaløes Vej 5, Copenhagen N DK-2200, Denmark
- Current: College of Medicine, Florida State University, Tallahassee, FL 32306, USA
- Current: R & D, Thermo Fisher Scientific, Alachua, FL 32615, USA
- Veterinary Diagnostic Laboratory Medicine, College of Veterinary Medicine, Jeju National University, Jeju-si, Jeju-do, South Korea 63243
- Sanofi Oncology, Sanofi, Cambridge, MA 01890
- Sanofi Integrated Drug Discovery, Sanofi, Cambridge, MA 01890
- Division of Pulmonary, Critical Care & Sleep Medicine, Department of Medicine, the College of Medicine, University of Florida, Gainesville, FL 32610, USA
- Department of Cutaneous Oncology, Moffitt Cancer Center & Research Institute, Tampa, FL 12902
- Department of Biochemistry & Structural Biology, Center of innovative Drug Discovery, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229
- University of Florida Health Cancer Center, University of Florida, Gainesville, FL 32610, USA
| | - Daohong Zhou
- Department of Biochemistry & Structural Biology, Center of innovative Drug Discovery, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229
| | - Guangrong Zheng
- Department of Medicinal Chemistry, College of Pharmacy, University of Florida, Gainesville, FL 32610, USA
- University of Florida Health Cancer Center, University of Florida, Gainesville, FL 32610, USA
| | - Weizhou Zhang
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL 32610, USA
- University of Florida Health Cancer Center, University of Florida, Gainesville, FL 32610, USA
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Lee S, Song WJ, Park J, Kim M, Choen S, Kim MC, Jeong H, Yun Y. Off-Label Use of Crisdesalazine (GedaCure) in Meningoencephalitis in Two Dogs. Vet Sci 2023; 10:438. [PMID: 37505843 PMCID: PMC10383347 DOI: 10.3390/vetsci10070438] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 06/23/2023] [Accepted: 07/03/2023] [Indexed: 07/29/2023] Open
Abstract
An 8-year-old, castrated male Shih-tzu dog (Case 1) showing ataxia and gait disorder was referred for neurological examination and magnetic resonance imaging. Through comprehensive examinations, the patient was tentatively diagnosed with meningoencephalitis of unknown origin (MUO) and treatment with prednisolone and cytosine arabinoside was started. The symptoms were improving with immunosuppressive treatment. However, severe bacterial cystitis occurred and we could not avoid tapering off prednisolone. Then, neurological signs recurred. Therefore, we added crisdesalazine, which allowed us to reduce the daily dosage of immunosuppressants easily. In another case, a 4-year-old, spayed female Yorkshire terrier dog (Case 2) was referred to our hospital showing a head tilt, circling, and loss of the menace reflex. The patient was tentatively diagnosed with MUO and treatment with some immunosuppressants was attempted. The clinical symptoms improved, but the alleviation was inadequate. Thus, we added crisdesalazine. The neurological signs then markedly improved. Moreover, the drugs could be tapered off more easily than before. Crisdesalazine is a novel drug that has antioxidant and anti-inflammatory action in brain disease and is used particularly for dementia. In this paper, we tried an off-label use of this drug in canine MUO patients, and found that it had, in these two patients, additional therapeutic effects on the MUO.
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Affiliation(s)
- Saeyoung Lee
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | - Woo-Jin Song
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea
- The Research Institute of Veterinary Science, College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | - Jongjin Park
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | - Minkun Kim
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | - Sangkyung Choen
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
| | - Myung-Chul Kim
- The Research Institute of Veterinary Science, College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea
- Diagnostic Laboratory Medicine, College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | - Hyohoon Jeong
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea
- The Research Institute of Veterinary Science, College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | - Youngmin Yun
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea
- The Research Institute of Veterinary Science, College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea
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Kim HI, Kim MC. Physical Therapy Assessment Tool Threshold Values to Identify Sarcopenia and Locomotive Syndrome in the Elderly. Int J Environ Res Public Health 2023; 20:6098. [PMID: 37372684 DOI: 10.3390/ijerph20126098] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 05/31/2023] [Accepted: 06/09/2023] [Indexed: 06/29/2023]
Abstract
This study aimed to evaluate sarcopenia and locomotive syndrome in Korean elderly patients, analyze the closely related factors, and determine the threshold for distinguishing participants with sarcopenia, locomotive syndrome, and non-disease. To this end, we enrolled 210 subjects aged 65 years or more and classified them into the sarcopenia (n = 36) and locomotive syndrome (n = 164) groups; a control group was also included (n = 10). We evaluated the characteristics of these patients using the Timed Up and Go (TUG) test and Berg Balance Scale (BBS) and performed statistical analysis. Our findings showed statistically significant differences between the groups, leading to the derivation of a significant threshold value. The threshold value of the TUG test between the control and locomotive syndrome groups was 9.47 s; the threshold value of the BBS was 54 points, respectively. The threshold value of the TUG test between the locomotive syndrome and sarcopenia groups was 10.27 s, and the threshold value of the BBS was 50 points, respectively. These findings suggest that sarcopenia is closely related to locomotive syndrome, and that sarcopenia and locomotive syndrome can be identified using a physical therapy diagnostic evaluation tool.
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Affiliation(s)
- Hae-In Kim
- Department of Physical Therapy, Eulji University, Seongnam 13135, Republic of Korea
| | - Myung-Chul Kim
- Department of Physical Therapy, Eulji University, Seongnam 13135, Republic of Korea
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8
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Kim M, Song WJ, Park J, Lee S, Choen S, Kim MC, Yun Y. Suspected Cerebral Salt Wasting Syndrome with Cervical Spinal Lesion in a Domestic Shorthair Cat. Vet Sci 2023; 10:385. [PMID: 37368771 DOI: 10.3390/vetsci10060385] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 05/16/2023] [Accepted: 05/29/2023] [Indexed: 06/29/2023] Open
Abstract
A 12-year-old spayed female domestic short cat was presented with tetraplegia. The cat also showed signs of hyponatremia and dehydration, which were rapidly corrected by intravenous fluid infusion. Based on thorough physical and neurological examinations, the patient was suspected of having an intracranial disease. MRI revealed a high-signal T2 image of the bilateral parietal cerebral cortical gray matter junction, which is associated with fast electrolyte calibration, and a high-signal T2 image of the C2 spinal cord ventral area, which is associated with ischemic myelopathy. The cat reappeared three days later due to anorexia. Laboratory examinations revealed that the cat was clinically dehydrated and exhibited hyponatremia. Other causes of hyponatremia were excluded through history-taking, laboratory examination, imaging, and therapeutic response to fluid therapy, except for cerebral salt-wasting syndrome (CSWS). The cat was discharged 3 days after the start of fludrocortisone therapy with electrolytes within the normal range. Magnetic resonance imaging (MRI) was performed again 1 month after hospitalization, and the cerebral lesion disappeared, but the spinal cord lesion worsened compared to the previous image. The patient was euthanized due to the progression of the spinal lesion, with a poor prognosis and poor quality of life. This is the first case of suspected CSWS with a cervical spinal lesion in a cat.
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Affiliation(s)
- Minkun Kim
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | - Woo-Jin Song
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea
- The Research Institute of Veterinary Science, College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | - Jongjin Park
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | - Saeyoung Lee
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | - Sangkyung Choen
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
| | - Myung-Chul Kim
- The Research Institute of Veterinary Science, College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea
- Diagnostic Laboratory Medicine, College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | - Youngmin Yun
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea
- The Research Institute of Veterinary Science, College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea
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9
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Kim MC, Park HS, Kim HI, Paik JK, Chung DK. An analysis study of sarcopenia and locomotive syndrome in the old people using evaluation tool. J Exerc Rehabil 2022; 18:256-263. [PMID: 36110258 PMCID: PMC9449084 DOI: 10.12965/jer.2244234.117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 06/25/2022] [Indexed: 11/22/2022] Open
Abstract
This study was conducted to analyze the relationship between locomotive syndrome and sarcopenia in the old people using a functional evaluation tool. In this study, 237 Korean old people selected from the Miraeseum Seongnam Senior Complex and the Misa Riverside Welfare Center were diagnosed with the two diseases and the Berg balance scale was performed to confirm the deterioration of dynamic balance sensory. Through the diagnostic evaluation of the two diseases, the locomotive group (n= 180) and the sarcopenia group (n= 34) were classified and statistically analyzed. As a result of the study, a significant difference in dynamic balance sensory between the two diseases was confirmed, and a significant negative correlation was confirmed with 25-question geriatric locomotive function scale and grip strength among the diagnostic evaluation items of the two diseases. These results suggest that gradual deterioration of locomotive syndrome and sarcopenia occurs in the deterioration of physical performance in the old people, suggesting that the evaluation of locomotive syndrome can be used as a screening test for sarcopenia.
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Affiliation(s)
- Myung-Chul Kim
- Department of Physical Therapy, College of Health Sciences, Eulji University, Seongnam,
Korea
| | - Hang-Sik Park
- Department Faculty of Liberal Arts, Eulji University, Seongnam,
Korea
- Corresponding author: Hang-Sik Park, Department of Faculty of Liberal Arts, Eulji University, 553 Sanseong-daero, Sujeong-gu, Seongnam 13135, Korea,
| | - Hae-In Kim
- Department of Physical Therapy, College of Health Sciences, Eulji University, Seongnam,
Korea
| | - Jean-Kyung Paik
- Department of Food & Nutrition, College of Bio Convergence, Eulji University, Seongnam,
Korea
| | - Dong-Kun Chung
- Department of Medical IT, College of Bio Convergence, Eulji University, Seongnam,
Korea
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10
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Wang L, Jin Z, Master RP, Maharjan CK, Carelock ME, Reccoppa TBA, Kim MC, Kolb R, Zhang W. Breast Cancer Stem Cells: Signaling Pathways, Cellular Interactions, and Therapeutic Implications. Cancers (Basel) 2022; 14:cancers14133287. [PMID: 35805056 PMCID: PMC9265870 DOI: 10.3390/cancers14133287] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 07/02/2022] [Accepted: 07/02/2022] [Indexed: 02/01/2023] Open
Abstract
Breast cancer stem cells (BCSCs) constitute a small population of cells within breast cancer and are characterized by their ability to self-renew, differentiate, and recapitulate the heterogeneity of the tumor. Clinically, BCSCs have been correlated with cancer progression, metastasis, relapse, and drug resistance. The tumorigenic roles of BCSCs have been extensively reviewed and will not be the major focus of the current review. Here, we aim to highlight how the crucial intrinsic signaling pathways regulate the fate of BCSCs, including the Wnt, Notch, Hedgehog, and NF-κB signaling pathways, as well as how different cell populations crosstalk with BCSCs within the TME, including adipocytes, endothelial cells, fibroblasts, and immune cells. Based on the molecular and cellular activities of BCSCs, we will also summarize the targeting strategies for BCSCs and related clinical trials. This review will highlight that BCSC development in breast cancer is impacted by both BCSC endogenous signaling and external factors in the TME, which provides an insight into how to establish a comprehensively therapeutic strategy to target BCSCs for breast cancer treatments.
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Affiliation(s)
- Lei Wang
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL 32610, USA; (L.W.); (Z.J.); (R.P.M.); (C.K.M.); (M.E.C.); (T.B.A.R.); (M.-C.K.); (R.K.)
- Immunology Concentration, Biomedical Graduate Program, College of Medicine, University of Florida, Gainesville, FL 32610, USA
| | - Zeng Jin
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL 32610, USA; (L.W.); (Z.J.); (R.P.M.); (C.K.M.); (M.E.C.); (T.B.A.R.); (M.-C.K.); (R.K.)
- Cancer Biology Concentration, Biomedical Graduate Program, College of Medicine, University of Florida, Gainesville, FL 32610, USA
| | - Rohan P. Master
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL 32610, USA; (L.W.); (Z.J.); (R.P.M.); (C.K.M.); (M.E.C.); (T.B.A.R.); (M.-C.K.); (R.K.)
| | - Chandra K. Maharjan
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL 32610, USA; (L.W.); (Z.J.); (R.P.M.); (C.K.M.); (M.E.C.); (T.B.A.R.); (M.-C.K.); (R.K.)
| | - Madison E. Carelock
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL 32610, USA; (L.W.); (Z.J.); (R.P.M.); (C.K.M.); (M.E.C.); (T.B.A.R.); (M.-C.K.); (R.K.)
- Cancer Biology Concentration, Biomedical Graduate Program, College of Medicine, University of Florida, Gainesville, FL 32610, USA
| | - Tiffany B. A. Reccoppa
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL 32610, USA; (L.W.); (Z.J.); (R.P.M.); (C.K.M.); (M.E.C.); (T.B.A.R.); (M.-C.K.); (R.K.)
- Department of Biology, College of Liberal Arts & Sciences, University of Florida, Gainesville, FL 32610, USA
| | - Myung-Chul Kim
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL 32610, USA; (L.W.); (Z.J.); (R.P.M.); (C.K.M.); (M.E.C.); (T.B.A.R.); (M.-C.K.); (R.K.)
| | - Ryan Kolb
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL 32610, USA; (L.W.); (Z.J.); (R.P.M.); (C.K.M.); (M.E.C.); (T.B.A.R.); (M.-C.K.); (R.K.)
- UF Health Cancer Center, University of Florida, Gainesville, FL 32610, USA
| | - Weizhou Zhang
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL 32610, USA; (L.W.); (Z.J.); (R.P.M.); (C.K.M.); (M.E.C.); (T.B.A.R.); (M.-C.K.); (R.K.)
- UF Health Cancer Center, University of Florida, Gainesville, FL 32610, USA
- Correspondence: ; Tel.: +1-352-273-6748
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11
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Maharjan CK, Mo J, Wang L, Kim MC, Wang S, Borcherding N, Vikas P, Zhang W. Natural and Synthetic Estrogens in Chronic Inflammation and Breast Cancer. Cancers (Basel) 2021; 14:cancers14010206. [PMID: 35008370 PMCID: PMC8744660 DOI: 10.3390/cancers14010206] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 12/17/2021] [Accepted: 12/19/2021] [Indexed: 12/17/2022] Open
Abstract
The oncogenic role of estrogen receptor (ER) signaling in breast cancer has long been established. Interaction of estrogen with estrogen receptor (ER) in the nucleus activates genomic pathways of estrogen signaling. In contrast, estrogen interaction with the cell membrane-bound G-protein-coupled estrogen receptor (GPER) activates the rapid receptor-mediated signaling transduction cascades. Aberrant estrogen signaling enhances mammary epithelial cell proliferation, survival, and angiogenesis, hence is an important step towards breast cancer initiation and progression. Meanwhile, a growing number of studies also provide evidence for estrogen's pro- or anti-inflammatory roles. As other articles in this issue cover classic ER and GPER signaling mediated by estrogen, this review will discuss the crucial mechanisms by which estrogen signaling influences chronic inflammation and how that is involved in breast cancer. Xenoestrogens acquired from plant diet or exposure to industrial products constantly interact with and alter innate estrogen signaling at various levels. As such, they can modulate chronic inflammation and breast cancer development. Natural xenoestrogens generally have anti-inflammatory properties, which is consistent with their chemoprotective role in breast cancer. In contrast, synthetic xenoestrogens are proinflammatory and carcinogenic compounds that can increase the risk of breast cancer. This article also highlights important xenoestrogens with a particular focus on their role in inflammation and breast cancer. Improved understanding of the complex relationship between estrogens, inflammation, and breast cancer will guide clinical research on agents that could advance breast cancer prevention and therapy.
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Affiliation(s)
- Chandra K. Maharjan
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL 32610, USA; (C.K.M.); (J.M.); (L.W.); (M.-C.K.)
| | - Jiao Mo
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL 32610, USA; (C.K.M.); (J.M.); (L.W.); (M.-C.K.)
| | - Lei Wang
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL 32610, USA; (C.K.M.); (J.M.); (L.W.); (M.-C.K.)
| | - Myung-Chul Kim
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL 32610, USA; (C.K.M.); (J.M.); (L.W.); (M.-C.K.)
| | - Sameul Wang
- Canyonoak Consulting LLC, San Diego, CA 92127, USA;
| | - Nicholas Borcherding
- Department of Pathology and Immunology, School of Medicine, Washington University, St. Louis, MO 63110, USA;
| | - Praveen Vikas
- Department of Internal Medicine, Carver College of Medicine, Iowa City, IA 52242, USA;
| | - Weizhou Zhang
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL 32610, USA; (C.K.M.); (J.M.); (L.W.); (M.-C.K.)
- Mechanism of Oncogenesis Program, University of Florida Health Cancer Center, University of Florida, Gainesville, FL 32610, USA
- Correspondence: to: ; Tel.: +1-352-273-6748
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12
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Kim MC, Jin Z, Kolb R, Borcherding N, Chatzkel JA, Falzarano SM, Zhang W. Updates on Immunotherapy and Immune Landscape in Renal Clear Cell Carcinoma. Cancers (Basel) 2021; 13:5856. [PMID: 34831009 PMCID: PMC8616149 DOI: 10.3390/cancers13225856] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/15/2021] [Accepted: 11/19/2021] [Indexed: 12/24/2022] Open
Abstract
Several clinicopathological features of clear cell renal cell carcinomas (ccRCC) contribute to make an "atypical" cancer, including resistance to chemotherapy, sensitivity to anti-angiogenesis therapy and ICIs despite a low mutational burden, and CD8+ T cell infiltration being the predictor for poor prognosis-normally CD8+ T cell infiltration is a good prognostic factor in cancer patients. These "atypical" features have brought researchers to investigate the molecular and immunological mechanisms that lead to the increased T cell infiltrates despite relatively low molecular burdens, as well as to decipher the immune landscape that leads to better response to ICIs. In the present study, we summarize the past and ongoing pivotal clinical trials of immunotherapies for ccRCC, emphasizing the potential molecular and cellular mechanisms that lead to the success or failure of ICI therapy. Single-cell analysis of ccRCC has provided a more thorough and detailed understanding of the tumor immune microenvironment and has facilitated the discovery of molecular biomarkers from the tumor-infiltrating immune cells. We herein will focus on the discussion of some major immune cells, including T cells and tumor-associated macrophages (TAM) in ccRCC. We will further provide some perspectives of using molecular and cellular biomarkers derived from these immune cell types to potentially improve the response rate to ICIs in ccRCC patients.
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Affiliation(s)
- Myung-Chul Kim
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL 32610, USA; (M.-C.K.); (Z.J.); (R.K.); (S.M.F.)
- UF Health Cancer Center, University of Florida, Gainesville, FL 32610, USA
| | - Zeng Jin
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL 32610, USA; (M.-C.K.); (Z.J.); (R.K.); (S.M.F.)
- UF Health Cancer Center, University of Florida, Gainesville, FL 32610, USA
| | - Ryan Kolb
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL 32610, USA; (M.-C.K.); (Z.J.); (R.K.); (S.M.F.)
- UF Health Cancer Center, University of Florida, Gainesville, FL 32610, USA
| | - Nicholas Borcherding
- Department of Pathology and Immunology, Washington University, St. Louis, MO 63110, USA;
| | | | - Sara Moscovita Falzarano
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL 32610, USA; (M.-C.K.); (Z.J.); (R.K.); (S.M.F.)
- UF Health Cancer Center, University of Florida, Gainesville, FL 32610, USA
| | - Weizhou Zhang
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL 32610, USA; (M.-C.K.); (Z.J.); (R.K.); (S.M.F.)
- UF Health Cancer Center, University of Florida, Gainesville, FL 32610, USA
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13
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Kim MC, Borcherding N, Ahmed KK, Voigt AP, Vishwakarma A, Kolb R, Kluz PN, Pandey G, De U, Drashansky T, Helm EY, Zhang X, Gibson-Corley KN, Klesney-Tait J, Zhu Y, Lu J, Lu J, Huang X, Xiang H, Cheng J, Wang D, Wang Z, Tang J, Hu J, Wang Z, Liu H, Li M, Zhuang H, Avram D, Zhou D, Bacher R, Zheng SG, Wu X, Zakharia Y, Zhang W. CD177 modulates the function and homeostasis of tumor-infiltrating regulatory T cells. Nat Commun 2021; 12:5764. [PMID: 34599187 PMCID: PMC8486774 DOI: 10.1038/s41467-021-26091-4] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 09/17/2021] [Indexed: 12/23/2022] Open
Abstract
Regulatory T (Treg) cells are one of the major immunosuppressive cell types in cancer and a potential target for immunotherapy, but targeting tumor-infiltrating (TI) Treg cells has been challenging. Here, using single-cell RNA sequencing of immune cells from renal clear cell carcinoma (ccRCC) patients, we identify two distinct transcriptional fates for TI Treg cells, Fate-1 and Fate-2. The Fate-1 signature is associated with a poorer prognosis in ccRCC and several other solid cancers. CD177, a cell surface protein normally expressed on neutrophil, is specifically expressed on Fate-1 TI Treg cells in several solid cancer types, but not on other TI or peripheral Treg cells. Mechanistically, blocking CD177 reduces the suppressive activity of Treg cells in vitro, while Treg-specific deletion of Cd177 leads to decreased tumor growth and reduced TI Treg frequency in mice. Our results thus uncover a functional CD177+ TI Treg population that may serve as a target for TI Treg-specific immunotherapy.
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MESH Headings
- Animals
- Base Sequence
- Carcinogenesis/genetics
- Carcinogenesis/pathology
- Carcinoma, Renal Cell/genetics
- Carcinoma, Renal Cell/immunology
- Carcinoma, Renal Cell/pathology
- GPI-Linked Proteins/deficiency
- GPI-Linked Proteins/metabolism
- Gene Expression Profiling
- Gene Expression Regulation, Neoplastic
- Homeostasis
- Humans
- Isoantigens/metabolism
- Kidney Neoplasms/genetics
- Kidney Neoplasms/immunology
- Kidney Neoplasms/pathology
- Lymphocytes, Tumor-Infiltrating/metabolism
- Mice, Knockout
- Prognosis
- Receptors, Cell Surface/deficiency
- Receptors, Cell Surface/metabolism
- Single-Cell Analysis
- T-Lymphocytes, Regulatory/metabolism
- Transcription, Genetic
- Mice
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Affiliation(s)
- Myung-Chul Kim
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL, 32610, USA
- UF Health Cancer Center, University of Florida, Gainesville, FL, 32610, USA
| | - Nicholas Borcherding
- Department of Pathology, University of Iowa, Iowa City, IA, 52242, USA
- Cancer Biology Graduate Program, University of Iowa, Iowa City, IA, 52242, USA
- Medical Scientist Training Program, University of Iowa, Iowa City, IA, 52242, USA
| | - Kawther K Ahmed
- Department of Pathology, University of Iowa, Iowa City, IA, 52242, USA
- College of Pharmacy, University of Baghdad, Department of Pharmaceutics, Baghdad, 10071, Iraq
| | - Andrew P Voigt
- Medical Scientist Training Program, University of Iowa, Iowa City, IA, 52242, USA
| | - Ajaykumar Vishwakarma
- Cancer Biology Graduate Program, University of Iowa, Iowa City, IA, 52242, USA
- Department of Pharmaceutics and Translational Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA, IA52242, USA
| | - Ryan Kolb
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL, 32610, USA
- UF Health Cancer Center, University of Florida, Gainesville, FL, 32610, USA
| | - Paige N Kluz
- Department of Pathology, University of Iowa, Iowa City, IA, 52242, USA
| | - Gaurav Pandey
- Department of Pathology, University of Iowa, Iowa City, IA, 52242, USA
- Department of Radiation Oncology, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Umasankar De
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL, 32610, USA
- UF Health Cancer Center, University of Florida, Gainesville, FL, 32610, USA
| | - Theodore Drashansky
- Department of Anatomy and Cell Biology, University of Florida College of Medicine, 32610, Gainesville, FL, 32610, USA
| | - Eric Y Helm
- Department of Anatomy and Cell Biology, University of Florida College of Medicine, 32610, Gainesville, FL, 32610, USA
| | - Xin Zhang
- UF Health Cancer Center, University of Florida, Gainesville, FL, 32610, USA
- Department of Pharmacodynamics, College of Pharmacy, University of Florida, Gainesville, Fl, 32610, USA
| | - Katherine N Gibson-Corley
- Department of Pathology, Microbiology & Immunology, Vanderbilt University Medical Center, Nashville, TN, 37232-2130, USA
| | - Julia Klesney-Tait
- Department of Internal Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | - Yuwen Zhu
- Department of Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Jinglu Lu
- Department of Breast Surgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, Shanghai, 200127, China
| | - Jinsong Lu
- Shanghai Institute of Immunology, Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Xian Huang
- Shanghai Institute of Immunology, Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Hongrui Xiang
- Shanghai Institute of Immunology, Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Jinke Cheng
- Shanghai Key Laboratory for Tumor Microenvironment and Inflammation, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Department of Biochemistry and Molecular Cell Biology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Dongyang Wang
- Department of Gastrointestinal Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200025, China
| | - Zheng Wang
- Department of Gastrointestinal Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200025, China
| | - Jian Tang
- Department of Gastrointestinal Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200025, China
| | - Jiajia Hu
- Department of Nuclear Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Zhengting Wang
- Department of Gastroenterology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Hua Liu
- Department of Gastroenterology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Mingjia Li
- Department of Medicine, Division of Rheumatology & Clinical Immunology, University of Florida, 1600 Archer Road, Gainesville, FL, 32610-0275, USA
| | - Haoyang Zhuang
- Department of Medicine, Division of Rheumatology & Clinical Immunology, University of Florida, 1600 Archer Road, Gainesville, FL, 32610-0275, USA
| | - Dorina Avram
- UF Health Cancer Center, University of Florida, Gainesville, FL, 32610, USA
- Department of Anatomy and Cell Biology, University of Florida College of Medicine, 32610, Gainesville, FL, 32610, USA
- Department of Immunology, Moffitt Cancer Center, Tampa, FL, 33612, USA
| | - Daohong Zhou
- UF Health Cancer Center, University of Florida, Gainesville, FL, 32610, USA
- Department of Pharmacodynamics, College of Pharmacy, University of Florida, Gainesville, Fl, 32610, USA
| | - Rhonda Bacher
- Department of Biostatistics, University of Florida, Gainesville, FL, 32610, USA
| | - Song Guo Zheng
- Department of Internal Medicine, Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, 43210, USA
| | - Xuefeng Wu
- Department of Breast Surgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, Shanghai, 200127, China.
- Shanghai Institute of Immunology, Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
- Shanghai Key Laboratory for Tumor Microenvironment and Inflammation, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Department of Biochemistry and Molecular Cell Biology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
- Hongqiao International Institute of Medicine, Shanghai Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
| | - Yousef Zakharia
- Department of Pathology, Microbiology & Immunology, Vanderbilt University Medical Center, Nashville, TN, 37232-2130, USA.
| | - Weizhou Zhang
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL, 32610, USA.
- UF Health Cancer Center, University of Florida, Gainesville, FL, 32610, USA.
- Department of Pathology, University of Iowa, Iowa City, IA, 52242, USA.
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14
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Kim MC, Hwang SH, Yang Y, Kim NY, Kim Y. Reduction in mitochondrial oxidative stress mediates hypoxia-induced resistance to cisplatin in human transitional cell carcinoma cells. Neoplasia 2021; 23:653-662. [PMID: 34134082 PMCID: PMC8208898 DOI: 10.1016/j.neo.2021.05.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [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: 02/03/2021] [Revised: 05/16/2021] [Accepted: 05/18/2021] [Indexed: 12/04/2022] Open
Abstract
Tumor hypoxia is known to promote the acquisition of more aggressive phenotypes in human transitional cell carcinoma (TCC), including drug resistance. Accumulating evidence suggests that mitochondria play a central role in the chemoresistance of TCC. However, the role of mitochondria in the hypoxia-induced drug resistance in TCC remains elusive. The present study investigated the function of mitochondria in the drug resistance using a TCC cell line under hypoxic conditions. In vitro hypoxia (0.1% O2, 48 h) was achieved by incubating TCC cells in air chamber. Mitochondrial events involving hypoxia-induced drug resistance were assessed. Hypoxia significantly reduced the cisplatin-induced apoptosis of TCC cells. Additionally, hypoxia substantially decreased the level of mitochondrial reactive oxygen species (ROS) generated by cisplatin treatment. Analogously, elimination of mitochondrial ROS significantly rescued cells from cisplatin-induced apoptosis. Hypoxia enhanced mitochondrial hyperpolarization, which was not related to ATP production or the reversal of ATP synthase activity. The mitochondrial DNA (mtDNA) amplification efficiency data illustrated that hypoxia significantly prevented oxidative damage to the mitogenome. Moreover, transmission electron microscopy revealed that cisplatin-induced disruption of the mitochondrial ultrastructure was abated under hypoxic conditions. Notably, depletion of mtDNA by ethidium bromide abrogated hypoxia-induced resistance to cisplatin. Taken together, the present study demonstrated that TCC cells exposed to hypoxic conditions rendered mitochondria less sensitive to oxidative stress induced by cisplatin treatment, leading to enhanced drug resistance.
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Affiliation(s)
- Myung-Chul Kim
- Laboratory of Clinical Pathology, College of Veterinary Medicine, Seoul National University, Seoul, The Republic of Korea; BK21 PLUS Program for Creative Veterinary Science Research, College of Veterinary Medicine, Seoul National University, Seoul, The Republic of Korea; Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Sung-Hyun Hwang
- Laboratory of Clinical Pathology, College of Veterinary Medicine, Seoul National University, Seoul, The Republic of Korea; BK21 PLUS Program for Creative Veterinary Science Research, College of Veterinary Medicine, Seoul National University, Seoul, The Republic of Korea
| | - Yeseul Yang
- Laboratory of Clinical Pathology, College of Veterinary Medicine, Seoul National University, Seoul, The Republic of Korea; BK21 PLUS Program for Creative Veterinary Science Research, College of Veterinary Medicine, Seoul National University, Seoul, The Republic of Korea
| | - Na-Yon Kim
- Laboratory of Clinical Pathology, College of Veterinary Medicine, Seoul National University, Seoul, The Republic of Korea; BK21 PLUS Program for Creative Veterinary Science Research, College of Veterinary Medicine, Seoul National University, Seoul, The Republic of Korea
| | - Yongbaek Kim
- Laboratory of Clinical Pathology, College of Veterinary Medicine, Seoul National University, Seoul, The Republic of Korea; Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, The Republic of Korea.
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15
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Waldner L, Bernhardsson C, Woda C, Trompier F, Van Hoey O, Kulka U, Oestreicher U, Bassinet C, Rääf C, Discher M, Endesfelder D, Eakins JS, Gregoire E, Wojcik A, Ristic Y, Kim H, Lee J, Yu H, Kim MC, Abend M, Ainsbury E. The 2019-2020 EURADOS WG10 and RENEB Field Test of Retrospective Dosimetry Methods in a Small-Scale Incident Involving Ionizing Radiation. Radiat Res 2021; 195:253-264. [PMID: 33347576 DOI: 10.1667/rade-20-00243.1] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 11/23/2020] [Indexed: 11/03/2022]
Abstract
With the use of ionizing radiation comes the risk of accidents and malevolent misuse. When unplanned exposures occur, there are several methods which can be used to retrospectively reconstruct individual radiation exposures; biological methods include analysis of aberrations and damage of chromosomes and DNA, while physical methods rely on luminescence (TL/OSL) or EPR signals. To ensure the quality and dependability of these methods, they should be evaluated under realistic exposure conditions. In 2019, EURADOS Working Group 10 and RENEB organized a field test with the purpose of evaluating retrospective dosimetry methods as carried out in potential real-life exposure scenarios. A 1.36 TBq 192Ir source was used to irradiate anthropomorphic phantoms in different geometries at doses of several Gy in an outdoor open-air geometry. Materials intended for accident dosimetry (including mobile phones and blood) were placed on the phantoms together with reference dosimeters (LiF, NaCl, glass). The objective was to estimate radiation exposures received by individuals as measured using blood and fortuitous materials, and to evaluate these methods by comparing the estimated doses to reference measurements and Monte Carlo simulations. Herein we describe the overall planning, goals, execution and preliminary outcomes of the 2019 field test. Such field tests are essential for the development of new and existing methods. The outputs from this field test include useful experience in terms of planning and execution of future exercises, with respect to time management, radiation protection, and reference dosimetry to be considered to obtain relevant data for analysis.
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Affiliation(s)
- L Waldner
- Lund University, Department of Translational Medicine, Medical Radiation Physics, Malmö, Sweden
| | - C Bernhardsson
- Lund University, Department of Translational Medicine, Medical Radiation Physics, Malmö, Sweden
| | - C Woda
- Helmholtz Zentrum München, Institute of Radiation Medicine, Neuherberg, Germany
| | - F Trompier
- Lund University, Department of Translational Medicine, Medical Radiation Physics, Malmö, Sweden
| | - O Van Hoey
- Institute for Environment, Health and Safety, Belgian Nuclear Research Center (SCK•CEN), Belgium
| | - U Kulka
- Bundesamt für Strahlenschutz, BfS, Department of Radiation Protection and Health, Oberschleissheim, Germany
| | - U Oestreicher
- Bundesamt für Strahlenschutz, BfS, Department of Radiation Protection and Health, Oberschleissheim, Germany
| | - C Bassinet
- Institut de Radioprotection et de Sûreté Nucléaire, Fontenay-aux-Roses, France
| | - C Rääf
- Lund University, Department of Translational Medicine, Medical Radiation Physics, Malmö, Sweden
| | - M Discher
- Paris-Lodron-University of Salzburg, Department of Geography and Geology, Salzburg, Austria
| | - D Endesfelder
- Lund University, Department of Translational Medicine, Medical Radiation Physics, Malmö, Sweden
| | - J S Eakins
- Public Health England, CRCE, Chilton, Didcot, Oxon, United Kingdom
| | - E Gregoire
- Lund University, Department of Translational Medicine, Medical Radiation Physics, Malmö, Sweden
| | - A Wojcik
- Stockholm University, Department of Molecular Biosciences, The Wenner-Gren Institute, Sweden and Institute of Biology, Jan Kochanowski University, Kielce, Poland
| | - Y Ristic
- Lund University, Department of Translational Medicine, Medical Radiation Physics, Malmö, Sweden
| | - H Kim
- Korea Atomic Energy Research Institute, Division of Radiation Safety Management, Daejeon, South Korea
| | - J Lee
- Korea Atomic Energy Research Institute, Division of Radiation Safety Management, Daejeon, South Korea
| | - H Yu
- Korea Institute of Nuclear Safety, Department of Radiological Emergency Preparedness, Daejeon, South Korea
| | - M C Kim
- Korea Atomic Energy Research Institute, Division of Radiation Safety Management, Daejeon, South Korea
| | - M Abend
- Bundeswehr Institute of Radiobiology, Munich, Germany
| | - E Ainsbury
- Public Health England, CRCE, Chilton, Didcot, Oxon, United Kingdom
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16
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Kolb R, De U, Khan S, Luo Y, Kim MC, Yu H, Wu C, Mo J, Zhang X, Zhang P, Zhang X, Borcherding N, Koppel D, Fu YX, Zheng SG, Avram D, Zheng G, Zhou D, Zhang W. Proteolysis-targeting chimera against BCL-X L destroys tumor-infiltrating regulatory T cells. Nat Commun 2021; 12:1281. [PMID: 33627663 PMCID: PMC7904819 DOI: 10.1038/s41467-021-21573-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 02/01/2021] [Indexed: 12/13/2022] Open
Abstract
Regulatory T cells (Tregs) play an important role in maintaining immune homeostasis and, within tumors, their upregulation is common and promotes an immunosuppressive microenvironment. Therapeutic strategies that can eliminate Tregs in the tumor (i.e., therapies that do not run the risk of affecting normal tissues), are urgently needed for the development of cancer immunotherapies. Here we report our discovery of B-cell lymphoma extra-large (BCL-XL) as a potential molecular target of tumor-infiltrating (TI) Tregs. We show that pharmacological degradation of BCL-XL using a newly developed platelet-sparing BCL-XL Proteolysis-targeting chimera (PROTAC) induces the apoptosis of TI-Tregs and the activation of TI-CD8+ T cells. Moreover, these activities result in an effective suppression of syngeneic tumor growth in immunocompetent, but not in immunodeficient or CD8+ T cell-depleted mice. Notably, treatment with BCL-XL PROTAC does not cause detectable damage within several normal tissues or thrombocytopenia. These findings identify BCL-XL as a target in the elimination of TI-Tregs as a component of cancer immunotherapies, and that the BCL-XL-specific PROTAC has the potential to be developed as a therapeutic for cancer immunotherapy. Targeting regulatory T cells (Treg) represents a therapeutic option to abrogate tumor-associated immune suppression. Here the authors show that pharmacological degradation of BCL-XL preferentially induces apoptosis of tumor-infiltrating Treg, promoting CD8 T cell activation and anti-tumor immune responses in preclinical cancer models.
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Affiliation(s)
- Ryan Kolb
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, USA.,University of Florida Health Cancer Center, University of Florida, Gainesville, FL, USA
| | - Umasankar De
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Sajid Khan
- Department of Pharmacodynamics, College of Pharmacy, University of Florida, Gainesville, FL, USA
| | - Yuewan Luo
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Myung-Chul Kim
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Haijun Yu
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Chaoyan Wu
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Jiao Mo
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Xin Zhang
- Department of Pharmacodynamics, College of Pharmacy, University of Florida, Gainesville, FL, USA
| | - Peiyi Zhang
- Department of Medicinal Chemistry, College of Pharmacy, University of Florida, Gainesville, FL, USA
| | - Xuan Zhang
- Department of Medicinal Chemistry, College of Pharmacy, University of Florida, Gainesville, FL, USA
| | | | - Daniel Koppel
- University of Florida Health Cancer Center, University of Florida, Gainesville, FL, USA.,Department of Chemistry, College of Liberal Art and Sciences, University of Florida, Gainesville, FL, USA
| | - Yang-Xin Fu
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Song Guo Zheng
- Department of Internal Medicine, Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, USA
| | - Dorina Avram
- University of Florida Health Cancer Center, University of Florida, Gainesville, FL, USA.,Department of Anatomy and Cell Biology, College of Medicine, University of Florida, Gainesville, FL, USA.,Department of Immunology, Moffitt Cancer Center, Tampa, FL, USA
| | - Guangrong Zheng
- University of Florida Health Cancer Center, University of Florida, Gainesville, FL, USA.,Department of Medicinal Chemistry, College of Pharmacy, University of Florida, Gainesville, FL, USA
| | - Daohong Zhou
- University of Florida Health Cancer Center, University of Florida, Gainesville, FL, USA. .,Department of Pharmacodynamics, College of Pharmacy, University of Florida, Gainesville, FL, USA.
| | - Weizhou Zhang
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, USA. .,University of Florida Health Cancer Center, University of Florida, Gainesville, FL, USA.
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17
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Kim MC, Fricchione GL, Akeju O. Accidental awareness under general anaesthesia: Incidence, risk factors, and psychological management. BJA Educ 2021; 21:154-161. [PMID: 33777414 DOI: 10.1016/j.bjae.2020.12.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/02/2020] [Indexed: 12/20/2022] Open
Affiliation(s)
- M C Kim
- Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - G L Fricchione
- Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.,Benson-Henry Institute for Mind Body Medicine and the McCance Center for Brain Health, Harvard Medical School, Boston, MA, USA
| | - O Akeju
- Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
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18
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Kluz PN, Kolb R, Xie Q, Borcherding N, Liu Q, Luo Y, Kim MC, Wang L, Zhang Y, Li W, Stipp C, Gibson-Corley KN, Zhao C, Qi HH, Bellizzi A, Tao AW, Sugg S, Weigel RJ, Zhou D, Shen X, Zhang W. Cancer cell-intrinsic function of CD177 in attenuating β-catenin signaling. Oncogene 2020; 39:2877-2889. [PMID: 32042113 PMCID: PMC7127950 DOI: 10.1038/s41388-020-1203-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 01/27/2020] [Accepted: 01/30/2020] [Indexed: 12/18/2022]
Abstract
Aiming to identify immune molecules with a novel function in cancer pathogenesis, we found the cluster of differentiation 177 (CD177), a known neutrophil antigen, to be positively correlated with relapse-free (RFS), metastasis-free (MFS) or overall survival (OS) in breast cancer. Additionally, CD177 expression is correlated with good prognosis in several other solid cancers including prostate, cervical, and lung. Focusing on breast cancer, we found that CD177 is expressed in normal breast epithelial cells and is significantly reduced in invasive cancers. Loss of CD177 leads to hyperproliferative mammary epithelium and contributes to breast cancer pathogenesis. Mechanistically, we found that CD177-deficiency is associated with an increase in β-Catenin signaling. Here we identified CD177 as a novel regulator of mammary epithelial proliferation and breast cancer pathogenesis likely via the modulation of Wnt/β-Catenin signaling pathway, a key signaling pathway involved in multiple cancer types.
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Affiliation(s)
- Paige N Kluz
- Department of Pathology, University of Iowa, College of Medicine, Iowa City, IA, 52242-1109, USA.,Free Radical and Radiation Biology Program, University of Iowa, College of Medicine, Iowa City, IA, 52242-1109, USA
| | - Ryan Kolb
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, 32610, USA
| | - Qing Xie
- Department of Pathology, University of Iowa, College of Medicine, Iowa City, IA, 52242-1109, USA.,Tumor Signaling and Transduction Laboratory, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, 453000, China
| | - Nicholas Borcherding
- Department of Pathology, University of Iowa, College of Medicine, Iowa City, IA, 52242-1109, USA.,Medical Science Training Program, University of Iowa, College of Medicine, Iowa City, IA, 52242-1109, USA
| | - Qi Liu
- Department of Anatomy and Cell Biology, University of Iowa, College of Medicine, Iowa City, IA, 52242-1109, USA
| | - Yuewan Luo
- Free Radical and Radiation Biology Program, University of Iowa, College of Medicine, Iowa City, IA, 52242-1109, USA
| | - Myung-Chul Kim
- Free Radical and Radiation Biology Program, University of Iowa, College of Medicine, Iowa City, IA, 52242-1109, USA
| | - Linna Wang
- Department of Chemistry, Purdue University, West Lafayette, IN, 47907, USA
| | - Yinan Zhang
- Department of Biology, College of Life Science, Nankai University, Tianjin, 300071, China
| | - Wei Li
- Free Radical and Radiation Biology Program, University of Iowa, College of Medicine, Iowa City, IA, 52242-1109, USA
| | - Christopher Stipp
- Department of Biology, University of Iowa, College of Medicine, Iowa City, IA, 52242-1109, USA.,Holden Comprehensive Cancer Center, University of Iowa, College of Medicine, Iowa City, IA, 52242-1109, USA
| | - Katherine N Gibson-Corley
- Department of Pathology, University of Iowa, College of Medicine, Iowa City, IA, 52242-1109, USA.,Holden Comprehensive Cancer Center, University of Iowa, College of Medicine, Iowa City, IA, 52242-1109, USA
| | - Chen Zhao
- Department of Pathology, University of Iowa, College of Medicine, Iowa City, IA, 52242-1109, USA
| | - Hank H Qi
- Department of Anatomy and Cell Biology, University of Iowa, College of Medicine, Iowa City, IA, 52242-1109, USA
| | - Andrew Bellizzi
- Department of Pathology, University of Iowa, College of Medicine, Iowa City, IA, 52242-1109, USA.,Holden Comprehensive Cancer Center, University of Iowa, College of Medicine, Iowa City, IA, 52242-1109, USA
| | - Andy W Tao
- Department of Chemistry, Purdue University, West Lafayette, IN, 47907, USA
| | - Sonia Sugg
- Holden Comprehensive Cancer Center, University of Iowa, College of Medicine, Iowa City, IA, 52242-1109, USA.,Department of Surgery, University of Iowa, College of Medicine, Iowa City, IA, 52242-1109, USA
| | - Ronald J Weigel
- Holden Comprehensive Cancer Center, University of Iowa, College of Medicine, Iowa City, IA, 52242-1109, USA.,Department of Surgery, University of Iowa, College of Medicine, Iowa City, IA, 52242-1109, USA
| | - Daohong Zhou
- Department of Pharmacodynamics, College of Pharmacy, University of Florida, Gainesville, FL, 32610, USA
| | - Xian Shen
- Division of Gastrointestinal Surgery, The Second Affiliated Hospital of Wenzhou Medical University, Zhejiang, 325035, China.
| | - Weizhou Zhang
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, 32610, USA.
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19
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Hong MK, Kim MC, Smith AE. Simultaneous Determination of 2,4-D, Dicamba, and Mecoprop in Soil Leachates by Gas Chromatography with Electron Capture Detection. J AOAC Int 2020. [DOI: 10.1093/jaoac/79.4.998] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Capillary gas chromatography (GC) with electron capture detection (ECD) and mass selective detection (MSD) was used for simultaneous determination of 2,4-dichlorophenoxyacetic acid (2,4-D), 3,6-dichloro-2-methoxybenzoic acid (dicamba), and (±)2-(4-chloro-2-methylphenoxy)propanoicacid (mecoprop) extracted from soil leachates. The 2,2,2-trif luoroethanol (TFE) esters of the acid analytes were synthesized by using H2SO4 as the catalyst. Efficiency of derivatization and instrumental molecular response were compared for herbicides methylated with boron trifluoride-methanol (14%, w/v), H2S04-methanol (33%, v/v), and diazomethane. The molecular integrity of TFE-2,4-D, TFE-dicamba, and TFE-mecoprop in the mixture was confirmed by GC-MSD. The TFE-esterification efficiency was maximized by adjusting the volume of H2SO4, the reaction time, and the reaction temperature. Optimal efficiency for the herbicide mixture was obtained by adding 1 m└ H2SO4 and 1 m└ TFE to the dried extract and allowing the reaction to proceed at 22�C for 8 h or by adding 0.5 m└ H2SO4 and 1 m└ TFE at 60°C for 120 min. Maximum esterification efficiency required an increased temperature and a decreased reaction time. The sensitivity of GC-ECD was about 2-20 times greater in determining TFE esters than in determining methyl ester derivatives. The herbicides were extracted simultaneously from soil leachates previously spiked with the analytes and esterified to TFE derivatives. Herbicide recovery, peak resolution, and detector sensitivity were excellent without column cleanup procedures.
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Affiliation(s)
- Moo-Ki Hong
- Korea Food and Drag Administration, Department of Food, Seoul 122-020, Republic of Korea
| | - Myung-Chul Kim
- Korea Food and Drag Administration, Department of Food, Seoul 122-020, Republic of Korea
| | - Albert E Smith
- University of Georgia, Georgia Experiment Station, Griffin, GA 30223
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20
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Kim NY, An J, Jeong JK, Ji S, Hwang SH, Lee HS, Kim MC, Kim HW, Won S, Kim Y. Evaluation of a human glycated hemoglobin test in canine diabetes mellitus. J Vet Diagn Invest 2019; 31:408-414. [PMID: 30776981 PMCID: PMC6838714 DOI: 10.1177/1040638719832071] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Abstract
Glycated hemoglobin A1c (HbA1c) is widely used for monitoring and diagnosing human diabetes mellitus, but is rarely used in veterinary clinics. The goal of our study was to validate the commercial HbA1c testing system SD A1cCare analyzer (Bionote, Gyeoggi-do, South Korea) for use in dogs. Dogs were recruited with owner's consent. Diabetic status was determined based on clinical signs, fasting hyperglycemia, and glycosuria. Intra-assay precision and linearity were evaluated with EDTA, heparin, or citrate as anticoagulants, and had excellent precision with mean coefficients of variation (CVs) of 2.47%, 2.26%, and 1.92%, respectively. Diluted anticoagulated blood samples showed excellent linear relationships with R2 of 0.991, 0.996, and 0.994, respectively. Inter-assay precision revealed that the mean CV of the normal control was 2.18% and that of the high control was 2.01% (30 repeats). Observed total error of a normal control was 7.81%, and 6.12% for the high control. HbA1c level measured before and after removal of plasma and replacement by saline showed minimal interference by lipid contents ( p = 0.929). The HbA1c concentrations of diabetic dogs were significantly higher than those of non-diabetic dogs ( p < 0.001). HbA1c value >6.2% indicated canine diabetes through a classification and regression tree model. In most cases, fructosamine and HbA1c were highly correlated ( r = 0.674, p < 0.001). The HbA1c testing system could be a valuable testing system to evaluate canine diabetes mellitus, providing an alternative in-house option for use by veterinary clinicians.
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Affiliation(s)
- Na-Yon Kim
- Laboratory of Clinical Pathology, BK21 PLUS Program for Creative Veterinary Science Research, Research Institute for Veterinary Science, College of Veterinary Medicine (NY Kim, Y Kim, MC Kim, Ji, Hwang, Lee)
- Department of Public Health Science, Graduate School of Public Health (An, Won)
- Seoul National University, Seoul, The Republic of Korea; Department of Chemistry, Princeton University, Princeton, NJ (Jeong)
- Haemaru Referral Animal Hospital, Hwangsaeul-ro, Bundang-gu, Seongnam City, Gyeongi-do, The Republic of Korea (HW Kim)
| | - Jaehoon An
- Laboratory of Clinical Pathology, BK21 PLUS Program for Creative Veterinary Science Research, Research Institute for Veterinary Science, College of Veterinary Medicine (NY Kim, Y Kim, MC Kim, Ji, Hwang, Lee)
- Department of Public Health Science, Graduate School of Public Health (An, Won)
- Seoul National University, Seoul, The Republic of Korea; Department of Chemistry, Princeton University, Princeton, NJ (Jeong)
- Haemaru Referral Animal Hospital, Hwangsaeul-ro, Bundang-gu, Seongnam City, Gyeongi-do, The Republic of Korea (HW Kim)
| | - Jae-Kyung Jeong
- Laboratory of Clinical Pathology, BK21 PLUS Program for Creative Veterinary Science Research, Research Institute for Veterinary Science, College of Veterinary Medicine (NY Kim, Y Kim, MC Kim, Ji, Hwang, Lee)
- Department of Public Health Science, Graduate School of Public Health (An, Won)
- Seoul National University, Seoul, The Republic of Korea; Department of Chemistry, Princeton University, Princeton, NJ (Jeong)
- Haemaru Referral Animal Hospital, Hwangsaeul-ro, Bundang-gu, Seongnam City, Gyeongi-do, The Republic of Korea (HW Kim)
| | - Sumin Ji
- Laboratory of Clinical Pathology, BK21 PLUS Program for Creative Veterinary Science Research, Research Institute for Veterinary Science, College of Veterinary Medicine (NY Kim, Y Kim, MC Kim, Ji, Hwang, Lee)
- Department of Public Health Science, Graduate School of Public Health (An, Won)
- Seoul National University, Seoul, The Republic of Korea; Department of Chemistry, Princeton University, Princeton, NJ (Jeong)
- Haemaru Referral Animal Hospital, Hwangsaeul-ro, Bundang-gu, Seongnam City, Gyeongi-do, The Republic of Korea (HW Kim)
| | - Sung-Hyun Hwang
- Laboratory of Clinical Pathology, BK21 PLUS Program for Creative Veterinary Science Research, Research Institute for Veterinary Science, College of Veterinary Medicine (NY Kim, Y Kim, MC Kim, Ji, Hwang, Lee)
- Department of Public Health Science, Graduate School of Public Health (An, Won)
- Seoul National University, Seoul, The Republic of Korea; Department of Chemistry, Princeton University, Princeton, NJ (Jeong)
- Haemaru Referral Animal Hospital, Hwangsaeul-ro, Bundang-gu, Seongnam City, Gyeongi-do, The Republic of Korea (HW Kim)
| | - Hong-Seok Lee
- Laboratory of Clinical Pathology, BK21 PLUS Program for Creative Veterinary Science Research, Research Institute for Veterinary Science, College of Veterinary Medicine (NY Kim, Y Kim, MC Kim, Ji, Hwang, Lee)
- Department of Public Health Science, Graduate School of Public Health (An, Won)
- Seoul National University, Seoul, The Republic of Korea; Department of Chemistry, Princeton University, Princeton, NJ (Jeong)
- Haemaru Referral Animal Hospital, Hwangsaeul-ro, Bundang-gu, Seongnam City, Gyeongi-do, The Republic of Korea (HW Kim)
| | - Myung-Chul Kim
- Laboratory of Clinical Pathology, BK21 PLUS Program for Creative Veterinary Science Research, Research Institute for Veterinary Science, College of Veterinary Medicine (NY Kim, Y Kim, MC Kim, Ji, Hwang, Lee)
- Department of Public Health Science, Graduate School of Public Health (An, Won)
- Seoul National University, Seoul, The Republic of Korea; Department of Chemistry, Princeton University, Princeton, NJ (Jeong)
- Haemaru Referral Animal Hospital, Hwangsaeul-ro, Bundang-gu, Seongnam City, Gyeongi-do, The Republic of Korea (HW Kim)
| | - Hyun-Wook Kim
- Laboratory of Clinical Pathology, BK21 PLUS Program for Creative Veterinary Science Research, Research Institute for Veterinary Science, College of Veterinary Medicine (NY Kim, Y Kim, MC Kim, Ji, Hwang, Lee)
- Department of Public Health Science, Graduate School of Public Health (An, Won)
- Seoul National University, Seoul, The Republic of Korea; Department of Chemistry, Princeton University, Princeton, NJ (Jeong)
- Haemaru Referral Animal Hospital, Hwangsaeul-ro, Bundang-gu, Seongnam City, Gyeongi-do, The Republic of Korea (HW Kim)
| | - Sungho Won
- Laboratory of Clinical Pathology, BK21 PLUS Program for Creative Veterinary Science Research, Research Institute for Veterinary Science, College of Veterinary Medicine (NY Kim, Y Kim, MC Kim, Ji, Hwang, Lee)
- Department of Public Health Science, Graduate School of Public Health (An, Won)
- Seoul National University, Seoul, The Republic of Korea; Department of Chemistry, Princeton University, Princeton, NJ (Jeong)
- Haemaru Referral Animal Hospital, Hwangsaeul-ro, Bundang-gu, Seongnam City, Gyeongi-do, The Republic of Korea (HW Kim)
| | - Yongbaek Kim
- Laboratory of Clinical Pathology, BK21 PLUS Program for Creative Veterinary Science Research, Research Institute for Veterinary Science, College of Veterinary Medicine (NY Kim, Y Kim, MC Kim, Ji, Hwang, Lee)
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21
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Hwang SH, Kim MC, Ji S, Yang Y, Jeong Y, Kim Y. Glucose starvation induces resistance to metformin through the elevation of mitochondrial multidrug resistance protein 1. Cancer Sci 2019; 110:1256-1267. [PMID: 30689265 PMCID: PMC6447852 DOI: 10.1111/cas.13952] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 01/16/2019] [Accepted: 01/21/2019] [Indexed: 12/20/2022] Open
Abstract
Metformin, a drug for type 2 diabetes mellitus, has shown therapeutic effects for various cancers. However, it had no beneficial effects on the survival rate of human malignant mesothelioma (HMM) patients. The present study was performed to elucidate the underlying mechanism of metformin resistance in HMM cells. Glucose‐starved HMM cells had enhanced resistance to metformin, demonstrated by decreased apoptosis and autophagy and increased cell survival. These cells showed abnormalities in mitochondria, such as decreased ATP synthesis, morphological elongation, altered mitochondrial permeability transition pore and hyperpolarization of mitochondrial membrane potential (MMP). Intriguingly, Mdr1 was significantly upregulated in mitochondria but not in cell membrane. The upregulated mitochondrial Mdr1 was reversed by treatment with carbonyl cyanide m‐chlorophenyl hydrazone, an MMP depolarization inducer. Furthermore, apoptosis and autophagy were increased in multidrug resistance protein 1 knockout HMM cells cultured under glucose starvation with metformin treatment. The data suggest that mitochondrial Mdr1 plays a critical role in the chemoresistance to metformin in HMM cells, which could be a potential target for improving its therapeutic efficacy.
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Affiliation(s)
- Sung-Hyun Hwang
- Laboratory of Veterinary Clinical Pathology, College of Veterinary Medicine, Seoul National University, Seoul, Korea.,BK21 PLUS Program for Creative Veterinary Science Research, College of Veterinary Medicine, Seoul National University, Seoul, Korea
| | - Myung-Chul Kim
- Laboratory of Veterinary Clinical Pathology, College of Veterinary Medicine, Seoul National University, Seoul, Korea.,BK21 PLUS Program for Creative Veterinary Science Research, College of Veterinary Medicine, Seoul National University, Seoul, Korea
| | - Sumin Ji
- Laboratory of Veterinary Clinical Pathology, College of Veterinary Medicine, Seoul National University, Seoul, Korea.,BK21 PLUS Program for Creative Veterinary Science Research, College of Veterinary Medicine, Seoul National University, Seoul, Korea
| | - Yeseul Yang
- Laboratory of Veterinary Clinical Pathology, College of Veterinary Medicine, Seoul National University, Seoul, Korea.,BK21 PLUS Program for Creative Veterinary Science Research, College of Veterinary Medicine, Seoul National University, Seoul, Korea
| | - Yeji Jeong
- Laboratory of Veterinary Clinical Pathology, College of Veterinary Medicine, Seoul National University, Seoul, Korea.,BK21 PLUS Program for Creative Veterinary Science Research, College of Veterinary Medicine, Seoul National University, Seoul, Korea
| | - Yongbaek Kim
- Laboratory of Veterinary Clinical Pathology, College of Veterinary Medicine, Seoul National University, Seoul, Korea.,Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Korea
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22
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Kim MC, Hwang SH, Kim NY, Lee HS, Ji S, Yang Y, Kim Y. Hypoxia promotes acquisition of aggressive phenotypes in human malignant mesothelioma. BMC Cancer 2018; 18:819. [PMID: 30111297 PMCID: PMC6094475 DOI: 10.1186/s12885-018-4720-z] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Accepted: 08/02/2018] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Hypoxia is a hallmark of the solid tumor microenvironment and is associated with poor outcomes in cancer patients. The present study was performed to investigate mechanisms underlying the hypoxia-induced phenotypic changes using human malignant mesothelioma (HMM) cells. METHODS Hypoxic conditions were achieved by incubating HMM cells in the air chamber. The effect of hypoxia on phenotype changes in HMM cells was investigated by performing in vitro clonogenicity, drug resistance, migration, and invasion assays. Signaling pathways and molecules involved in the more aggressive behaviors of HMM cells under hypoxia were investigated. A two-tailed unpaired Student's t-test or one-way ANOVA with Bonferroni post-test correction was used in this study. RESULTS Hypoxic conditions upregulated hypoxia-inducible factor 1 alpha (HIF-1α) and HIF-2α in parallel with the upregulation of its target, Glut-1, in HMM cells. In vitro clonogenicity of HMM cells was significantly increased in hypoxic conditions, but the proliferation of cells at a high density in hypoxia was lower than that in normoxic conditions. The expression levels of HIF-2α and Oct4 were increased in hypoxic HMM cells. The percentage of cells with high CD44 expression was significantly higher in HMM cells cultured in hypoxia than those cultured in normoxia. Hypoxia significantly enhanced the resistance of HMM cells to cisplatin, which occurred through cytoprotection against cisplatin-induced apoptosis. While cisplatin treatment decreased the ratio of Bcl-2 to Bax in normoxic condition, hypoxia conversely increased the ratio in HMM cells treated with cisplatin. Hypoxia increased the mobility and invasiveness of HMM cells. Epithelial to mesenchymal transition was promoted, which was indicated by the repression of E-cadherin and the concomitant increase of vimentin in HMM cells. CONCLUSIONS The data illustrated that hypoxic conditions augmented the aggressive phenotypes of HMM cells at the biological and molecular levels. The present study provides valuable background information beginning to understand aggressiveness of HMM in tumor microenvironments, suggesting that a control measure for tumor hypoxia may be an effective therapeutic strategy to reduce the aggressiveness of cancer cells in HMM patients.
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Affiliation(s)
- Myung-Chul Kim
- Laboratory of Clinical Pathology, College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea.,BK21 PLUS Program for Creative Veterinary Science Research, College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea
| | - Sung-Hyun Hwang
- Laboratory of Clinical Pathology, College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea.,BK21 PLUS Program for Creative Veterinary Science Research, College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea
| | - Na-Yon Kim
- Laboratory of Clinical Pathology, College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea.,BK21 PLUS Program for Creative Veterinary Science Research, College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea
| | - Hong-Seok Lee
- Laboratory of Clinical Pathology, College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea.,BK21 PLUS Program for Creative Veterinary Science Research, College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea
| | - Sumin Ji
- Laboratory of Clinical Pathology, College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea.,BK21 PLUS Program for Creative Veterinary Science Research, College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea
| | - Yeseul Yang
- Laboratory of Clinical Pathology, College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea.,BK21 PLUS Program for Creative Veterinary Science Research, College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea
| | - Yongbaek Kim
- Laboratory of Clinical Pathology, College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea. .,Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea.
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Kim MC, Ahn YK, Cho JY, Lee KH, Sim DS, Yoon HJ, Yoon NS, Kim KH, Hong YJ, Park HW, Kim JH, Jeong MH, Cho JG, Park JC. 469Optimal timing of extracorporeal membrane oxygenation in patients with acute myocardial infarction complicated by profound cardiogenic shock after resuscitated cardiac arrest. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- M C Kim
- Chonnam National University Hospital, Gwangju, Korea Republic of
| | - Y K Ahn
- Chonnam National University Hospital, Gwangju, Korea Republic of
| | - J Y Cho
- Chonnam National University Hospital, Gwangju, Korea Republic of
| | - K H Lee
- Chonnam National University Hospital, Gwangju, Korea Republic of
| | - D S Sim
- Chonnam National University Hospital, Gwangju, Korea Republic of
| | - H J Yoon
- Chonnam National University Hospital, Gwangju, Korea Republic of
| | - N S Yoon
- Chonnam National University Hospital, Gwangju, Korea Republic of
| | - K H Kim
- Chonnam National University Hospital, Gwangju, Korea Republic of
| | - Y J Hong
- Chonnam National University Hospital, Gwangju, Korea Republic of
| | - H W Park
- Chonnam National University Hospital, Gwangju, Korea Republic of
| | - J H Kim
- Chonnam National University Hospital, Gwangju, Korea Republic of
| | - M H Jeong
- Chonnam National University Hospital, Gwangju, Korea Republic of
| | - J G Cho
- Chonnam National University Hospital, Gwangju, Korea Republic of
| | - J C Park
- Chonnam National University Hospital, Gwangju, Korea Republic of
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24
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Park H, Kim HS, Hong YJ, Min JJ, Kim HB, Kim M, Jeong HK, Lim KS, Kim JH, Kim MC, Sim DS, Kim JH, Kim DY, Ahn YK, Jeong MH. P3710Evaluation of treatment with fimasartan in animal myocardial infarction model using cardiac positron emission tomography with [18F]FPTP. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- H Park
- Chonnam National University Hospital, Cardiology, Gwangju, Korea Republic of
| | - H S Kim
- Chonnam National University Hospital, Nuclear medicine, Gwangju, Korea Republic of
| | - Y J Hong
- Chonnam National University Hospital, Cardiology, Gwangju, Korea Republic of
| | - J J Min
- Chonnam National University Hospital, Nuclear medicine, Gwangju, Korea Republic of
| | - H B Kim
- Chonnam National University Hospital, Cardiology, Gwangju, Korea Republic of
| | - M Kim
- Chonnam National University Hospital, Nephrology, Gwangju, Korea Republic of
| | - H K Jeong
- Chonnam National University Hospital, Cardiology, Gwangju, Korea Republic of
| | - K S Lim
- Chonnam National University Hospital, Cardiology, Gwangju, Korea Republic of
| | - J H Kim
- Chonnam National University Hospital, Cardiology, Gwangju, Korea Republic of
| | - M C Kim
- Chonnam National University Hospital, Cardiology, Gwangju, Korea Republic of
| | - D S Sim
- Chonnam National University Hospital, Cardiology, Gwangju, Korea Republic of
| | - J H Kim
- Chonnam National University Hospital, Cardiology, Gwangju, Korea Republic of
| | - D Y Kim
- Chonnam National University Hospital, Nuclear medicine, Gwangju, Korea Republic of
| | - Y K Ahn
- Chonnam National University Hospital, Cardiology, Gwangju, Korea Republic of
| | - M H Jeong
- Chonnam National University Hospital, Cardiology, Gwangju, Korea Republic of
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25
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Kim HA, Kim MC, Kim NY, Ryu DY, Lee HS, Kim Y. Integrated analysis of microRNA and mRNA expressions in peripheral blood leukocytes of Warmblood horses before and after exercise. J Vet Sci 2018; 19:99-106. [PMID: 28927254 PMCID: PMC5799405 DOI: 10.4142/jvs.2018.19.1.99] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 05/29/2017] [Accepted: 09/06/2017] [Indexed: 01/26/2023] Open
Abstract
Exercise capacity is a valuable trait in horses, and it has been used as a horse selection criterion. Although exercise affects molecular homeostasis and adaptation in horses, the mechanisms underlying these effects are not fully described. This study was carried out to identify changes in the blood profiles of microRNAs (miRNAs) and mRNAs induced by exercise in horse leukocytes. Total RNAs isolated from the peripheral blood leukocytes of four Warmblood horses before and after exercise were subjected to next-generation sequencing (NGS) and microarray analyses to determine the miRNA and mRNA expression profiles, respectively. The expressions of 6 miRNAs, including 4 known and 2 novel miRNAs, were altered by exercise. The predicted target genes of the differentially expressed miRNAs identified by NGS were matched to the exercise-induced mRNAs determined by microarray analysis. Five genes (LOC100050849, LOC100054517, KHDRBS3, LOC100053996, and LOC100062720) from the microarray analysis were matched to the predicted target genes of the 6 miRNAs. The subset of mRNAs and miRNAs affected by exercise in peripheral blood leukocytes may be useful in elucidating the molecular mechanisms of exercise-associated physiology in horses.
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Affiliation(s)
- Hang-Ah Kim
- Laboratory of Veterinary Clinical Pathology, College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea.,BK21 PLUS Program for Creative Veterinary Science Research, College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea
| | - Myung-Chul Kim
- Laboratory of Veterinary Clinical Pathology, College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea.,BK21 PLUS Program for Creative Veterinary Science Research, College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea
| | - Na-Yon Kim
- Laboratory of Veterinary Clinical Pathology, College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea.,BK21 PLUS Program for Creative Veterinary Science Research, College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea
| | - Doug-Young Ryu
- Laboratory of Environmental Health and Biomarkers, College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea.,Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea
| | - Hong-Seok Lee
- Laboratory of Veterinary Clinical Pathology, College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea.,BK21 PLUS Program for Creative Veterinary Science Research, College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea
| | - Yongbaek Kim
- Laboratory of Veterinary Clinical Pathology, College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea.,Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea
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Kim Y, Kim MC, Park HS, Cho IH, Paik JK. Association of the Anxiety/Depression with Nutrition Intake in Stroke Patients. Clin Nutr Res 2018; 7:11-20. [PMID: 29423385 PMCID: PMC5796919 DOI: 10.7762/cnr.2018.7.1.11] [Citation(s) in RCA: 6] [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: 10/17/2017] [Revised: 10/21/2017] [Accepted: 01/22/2018] [Indexed: 11/25/2022] Open
Abstract
Stroke patients often experience a walking dysfunction caused by decreased mobility, weakened muscular strength, abnormal posture control, and cognitive dysfunction. Anxiety/depression is the most important and prevalent neuropsychiatric complication of stroke survivors. Brain injury and the presence of malnutrition after stroke contribute to metabolic status and clinical outcome of patients. We examined the level of nutrition intake in stroke patients according to their degree of anxiety/depression. The data were obtained from 2013 to 2015 through the Korea National Health and Nutrition Examination Survey (KNHANES). Study subjects were categorized to either a group having no problem of anxiety/depression (n = 274) or a group having a problem of anxiety or depression (n = 104). The EuroQoL-5 Dimensions Health Questionnaire (EQ-5D) index score was derived from the first description of an individual health status based on the EQ-5D classification system, including mobility, self-care, usual daily activities, pain/discomfort, and anxiety/depression. The mean age was 67.4 years in the normal group and 68.0 years in the anxiety or depression group. In the anxiety or depression group, 39.4% were men vs. 53.3% in the normal group. The total energy intake (p = 0.013), riboflavin (p = 0.041), and niacin (p = 0.038) was significantly higher in stroke patients with no anxiety/depression than those in stroke patients with having an anxiety/depression. The group having no problem of anxiety/depression had significantly higher EQ-5D index compared to the group having a problem of anxiety/depression group (p < 0.001) had. The results suggest the association between nutrition intake, usual activities and pain/discomfort status in the stroke patients with having an anxiety/depression.
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Affiliation(s)
- Yoonji Kim
- Department of Food and Nutrition, Eulji University, Seongnam 13135, Korea
| | - Myung-Chul Kim
- Department of Physical Therapy, Eulji University, Seongnam 13135, Korea
| | - Hang-Sik Park
- Faculty of Liberal Arts, Eulji University, Seongnam 13135, Korea
| | - Il-Hoon Cho
- Department of Biomedical Laboratory Science, Eulji University, Seongnam 13135, Korea
| | - Jean Kyung Paik
- Department of Food and Nutrition, Eulji University, Seongnam 13135, Korea
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27
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Kim MC, Kim DH, Yun CR, Chung JH, Kim HS, Choi HE, Kong KH. Refined single-interval adjustment matrix yes-no task for estimating the absolute thresholds of sweet-tasting molecules. J SENS STUD 2017. [DOI: 10.1111/joss.12250] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Myung-Chul Kim
- Laboratory of Biomolecular Chemistry, Department of Chemistry; College of Natural Sciences, Chung-Ang University; Seoul Korea
| | - Da-Hye Kim
- Laboratory of Biomolecular Chemistry, Department of Chemistry; College of Natural Sciences, Chung-Ang University; Seoul Korea
| | - Cho-Rong Yun
- Laboratory of Biomolecular Chemistry, Department of Chemistry; College of Natural Sciences, Chung-Ang University; Seoul Korea
| | - Ju-Hee Chung
- Laboratory of Biomolecular Chemistry, Department of Chemistry; College of Natural Sciences, Chung-Ang University; Seoul Korea
| | - Hyun-Soo Kim
- Laboratory of Biomolecular Chemistry, Department of Chemistry; College of Natural Sciences, Chung-Ang University; Seoul Korea
| | - Hyo-Eun Choi
- Laboratory of Biomolecular Chemistry, Department of Chemistry; College of Natural Sciences, Chung-Ang University; Seoul Korea
| | - Kwang-Hoon Kong
- Laboratory of Biomolecular Chemistry, Department of Chemistry; College of Natural Sciences, Chung-Ang University; Seoul Korea
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28
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Yun CR, Kong JN, Chung JH, Kim MC, Kong KH. Improved Secretory Production of the Sweet-Tasting Protein, Brazzein, in Kluyveromyces lactis. J Agric Food Chem 2016; 64:6312-6316. [PMID: 27465609 DOI: 10.1021/acs.jafc.6b02446] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Brazzein is an intensely sweet protein with high stability over a wide range of pH values and temperatures, due to its four disulfide bridges. Recombinant brazzein production through secretory expression in Kluyveromyces lactis is reported, but is inefficient due to incorrect disulfide formation, which is crucial for achieving the final protein structure and stability. Protein disulfide bond formation requires protein disulfide isomerase (PDI) and Ero1p. Here, we overexpressed KlPDI in K. lactis or treated the cells with dithiothreitol to overexpress KlERO1 and improve brazzein secretion. KlPDI and KlERO1 overexpression independently increased brazzein secretion in K. lactis by 1.7-2.2- and 1.3-1.6-fold, respectively. Simultaneous overexpression of KlPDI and KlERO1 accelerated des-pE1M-brazzein secretion by approximately 2.6-fold compared to the previous system. Moreover, intracellular misfolded/unfolded recombinant des-pE1M-brazzein was significantly decreased. In conclusion, increased KlPDI and KlERO1 expression favors brazzein secretion, suggesting that correct protein folding may be crucial to brazzein secretion in K. lactis.
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Affiliation(s)
- Cho-Rong Yun
- Laboratory of Biomolecular Chemistry, Department of Chemistry, College of Natural Sciences, Chung-Ang University , 221 Huksuk-Dong, Dongjak-Ku, Seoul 156-756, Korea
| | - Ji-Na Kong
- Department of Neuroscience and Regenerative Medicine, Medical College of George, Augusta University , Augusta, Georgia 30912, United States
| | - Ju-Hee Chung
- Laboratory of Biomolecular Chemistry, Department of Chemistry, College of Natural Sciences, Chung-Ang University , 221 Huksuk-Dong, Dongjak-Ku, Seoul 156-756, Korea
| | - Myung-Chul Kim
- Laboratory of Biomolecular Chemistry, Department of Chemistry, College of Natural Sciences, Chung-Ang University , 221 Huksuk-Dong, Dongjak-Ku, Seoul 156-756, Korea
| | - Kwang-Hoon Kong
- Laboratory of Biomolecular Chemistry, Department of Chemistry, College of Natural Sciences, Chung-Ang University , 221 Huksuk-Dong, Dongjak-Ku, Seoul 156-756, Korea
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29
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Park JM, Kim HI, Han SU, Yang HK, Kim YW, Lee HJ, An JY, Kim MC, Park S, Song KY, Oh SJ, Kong SH, Suh BJ, Yang DH, Ha TK, Hyung WJ, Ryu KW. Who may benefit from robotic gastrectomy?: A subgroup analysis of multicenter prospective comparative study data on robotic versus laparoscopic gastrectomy. Eur J Surg Oncol 2016; 42:1944-1949. [PMID: 27514719 DOI: 10.1016/j.ejso.2016.07.012] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 07/05/2016] [Accepted: 07/14/2016] [Indexed: 01/02/2023] Open
Abstract
AIMS Robotic gastrectomy for gastric cancer has been proven to be a feasible and safe minimally invasive procedure. However, our previous multicenter prospective study indicated that robotic gastrectomy is not superior to laparoscopic gastrectomy. This study aimed to identify which subgroups of patients would benefit from robotic gastrectomy rather than from conventional laparoscopic gastrectomy. METHODS A prospective multicenter comparative study comparing laparoscopic and robotic gastrectomy was previously conducted. We divided the patients into subgroups according to obesity, type of gastrectomy performed, and extent of lymph node dissection. Surgical outcomes were compared between the robotic and laparoscopic groups in each subgroup. RESULTS A total of 434 patients were enrolled into the robotic (n = 223) and laparoscopic (n = 211) surgery groups. According to obesity and gastrectomy type, there was no difference in the estimated blood loss (EBL), number of retrieved lymph nodes, complication rate, open conversion rate, and the length of hospital stay between the robotic and laparoscopic groups. According to the extent of lymph node dissection, the robotic group showed a significantly lower EBL than did the laparoscopic group after D2 dissection (P = 0.021), while there was no difference in EBL in patients that did not undergo D2 dissection (P = 0.365). CONCLUSION Patients with gastric cancer undergoing D2 lymph node dissection can benefit from less blood loss when a robotic surgery system is used.
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Affiliation(s)
- J M Park
- Department of Surgery, Chung-Ang University College of Medicine, Seoul, South Korea
| | - H I Kim
- Department of Surgery, Yonsei University College of Medicine, Seoul, South Korea
| | - S U Han
- Department of Surgery, Ajou University College of Medicine, Gyeonggido, South Korea
| | - H K Yang
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - Y W Kim
- Center for Gastric Cancer, National Cancer Center, Gyeonggido, South Korea
| | - H J Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - J Y An
- Department of Surgery, Yonsei University College of Medicine, Seoul, South Korea
| | - M C Kim
- Department of Surgery, Dong-A University College of Medicine, Busan, South Korea
| | - S Park
- Department of Surgery, Korea University College of Medicine, Seoul, South Korea
| | - K Y Song
- Department of Surgery, The Catholic University of Korea, Seoul, South Korea
| | - S J Oh
- Department of Surgery, Inje University College of Medicine, Busan, South Korea
| | - S H Kong
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - B J Suh
- Department of Surgery, Inje University College of Medicine, Busan, South Korea
| | - D H Yang
- Department of Surgery, Hallym University College of Medicine, Seoul, South Korea
| | - T K Ha
- Department of Surgery, Hanyang University College of Medicine, Seoul, South Korea
| | - W J Hyung
- Department of Surgery, Yonsei University College of Medicine, Seoul, South Korea
| | - K W Ryu
- Center for Gastric Cancer, National Cancer Center, Gyeonggido, South Korea.
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Kim MC, Kim NY, Seo YR, Kim Y. An Integrated Analysis of the Genome-Wide Profiles of DNA Methylation and mRNA Expression Defining the Side Population of a Human Malignant Mesothelioma Cell Line. J Cancer 2016; 7:1668-1679. [PMID: 27698904 PMCID: PMC5039388 DOI: 10.7150/jca.15423] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 05/18/2016] [Indexed: 12/18/2022] Open
Abstract
Intratumoral heterogeneity is a hallmark of all cancers and functions as the major barrier against effective cancer therapy. In contrast to genetic mutations, the role of epigenetic modifications in the generation and maintenance of heterogeneous cancer cells remains largely undetermined. This study was performed to evaluate the epigenetic mechanisms involved in the tumor cell heterogeneity using side population (SP) and non-SP cells isolated from a human malignant mesothelioma (HMM) cell line. The subpopulations of cancer cells were analyzed by methylated DNA immunoprecipitation combined with high-throughput sequencing (MeDIP-seq) and RNA-seq methodology. The RNA-seq data were analyzed with the MeDIP-seq data in an integrated way to identify the epigenetically modified genes that defined the SP. Concomitant changes in mRNA expression and DNA methylation were found in 122 genes, including 118 down-regulated genes with hypermethylation and 4 up-regulated genes with hypomethylation. Gene ontology revealed that a large portion of the genes belonged to the groups of biological processes such as stem cell maintenance, stem cell development, stem cell differentiation, and the negative regulation of the developmental process. Among these genes, BNC1, RPS6KA3, TWSG1 and DUSP15 contained aberrant methylation in the CpG islands of the promoter region, indicating that the genes regulated by DNA methylation characterized a distinct subpopulation of HMM cells. The present study provided valuable information to shed light on the epigenetic contributions to the generation and maintenance of tumor cell heterogeneity.
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Affiliation(s)
- Myung-Chul Kim
- Laboratory of Veterinary Clinical Pathology, College of Veterinary Medicine, Seoul National University, Seoul, The Republic of Korea.; BK21 PLUS Program for Creative Veterinary Science Research, College of Veterinary Medicine, Seoul National University, Seoul, The Republic of Korea
| | - Na-Yon Kim
- Laboratory of Veterinary Clinical Pathology, College of Veterinary Medicine, Seoul National University, Seoul, The Republic of Korea.; BK21 PLUS Program for Creative Veterinary Science Research, College of Veterinary Medicine, Seoul National University, Seoul, The Republic of Korea
| | - Yu-Ri Seo
- Laboratory of Veterinary Clinical Pathology, College of Veterinary Medicine, Seoul National University, Seoul, The Republic of Korea
| | - Yongbaek Kim
- Laboratory of Veterinary Clinical Pathology, College of Veterinary Medicine, Seoul National University, Seoul, The Republic of Korea.; Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, The Republic of Korea
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Lim JK, Jang JC, Kong JN, Kim MC, Kong KH. Importance of Glu53 in the C-terminal region of brazzein, a sweet-tasting protein. J Sci Food Agric 2016; 96:3202-3206. [PMID: 26478244 DOI: 10.1002/jsfa.7501] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Revised: 10/12/2015] [Accepted: 10/12/2015] [Indexed: 06/05/2023]
Abstract
BACKGROUND The sweetness of brazzein, one of the known sweet proteins, is dependent on charges and/or structures of its specific amino acid side chains. As the residues in the C-terminus of brazzein are known to play a critical role in sweetness, the currently unknown function of Glu53 requires further study. RESULTS To identify important residues responsible for the sweetness of the protein brazzein, four mutants of the Glu53 residue in the C-terminal region of des-pE1M-brazzein, which lacks the N-terminal pyroglutamate, were constructed using site-directed mutagenesis. Mutations of Glu53 substitution to Ala or Asp significantly decreased the sweetness. On the other hand, a Lys mutation resulted in a molecule with sweetness similar to that of des-pE1M-brazzein. Mutation of Glu53 to Arg resulted in a molecule significantly sweeter than des-pE1M-brazzein, which agrees with previous findings showing that mutation with positively charged residues results in a sweeter protein. CONCLUSION Our results suggest that the residue at position 53 is crucial for the sweetness of brazzein, which may be interacting with the sweet-taste receptor. © 2015 Society of Chemical Industry.
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Affiliation(s)
- Jin-Kyung Lim
- Biomolecular Chemistry Laboratory, Department of Chemistry, College of Natural Sciences, Chung-Ang University, 221 Huksuk-Dong, Dongjak-Ku, Seoul, 156-756, Korea
| | - Jin-Chul Jang
- Biomolecular Chemistry Laboratory, Department of Chemistry, College of Natural Sciences, Chung-Ang University, 221 Huksuk-Dong, Dongjak-Ku, Seoul, 156-756, Korea
| | - Ji-Na Kong
- Biomolecular Chemistry Laboratory, Department of Chemistry, College of Natural Sciences, Chung-Ang University, 221 Huksuk-Dong, Dongjak-Ku, Seoul, 156-756, Korea
| | - Myung-Chul Kim
- Biomolecular Chemistry Laboratory, Department of Chemistry, College of Natural Sciences, Chung-Ang University, 221 Huksuk-Dong, Dongjak-Ku, Seoul, 156-756, Korea
| | - Kwang-Hoon Kong
- Biomolecular Chemistry Laboratory, Department of Chemistry, College of Natural Sciences, Chung-Ang University, 221 Huksuk-Dong, Dongjak-Ku, Seoul, 156-756, Korea
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Lee S, Hwang S, Yu HJ, Oh D, Choi YJ, Kim MC, Kim Y, Ryu DY. Expression of microRNAs in Horse Plasma and Their Characteristic Nucleotide Composition. PLoS One 2016; 11:e0146374. [PMID: 26731407 PMCID: PMC4711666 DOI: 10.1371/journal.pone.0146374] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Accepted: 12/16/2015] [Indexed: 11/19/2022] Open
Abstract
MicroRNAs (miRNAs) in blood plasma are stable under high levels of ribonuclease activity and could function in tissue-to-tissue communication, suggesting that they may have distinctive structural characteristics compared with non-circulating miRNAs. In this study, the expression of miRNAs in horse plasma and their characteristic nucleotide composition were examined and compared with non-plasma miRNAs. Highly expressed plasma miRNA species were not part of the abundant group of miRNAs in non-plasma tissues, except for the eca-let-7 family. eca-miR-486-5p, -92a, and -21 were among the most abundant plasma miRNAs, and their human orthologs also belong to the most abundant group of miRNAs in human plasma. Uracil and guanine were the most common nucleotides of both plasma and non-plasma miRNAs. Cytosine was the least common in plasma and non-plasma miRNAs, although levels were higher in plasma miRNAs. Plasma miRNAs also showed higher expression levels of miRNAs containing adenine and cytosine repeats, compared with non-plasma miRNAs. These observations indicate that miRNAs in the plasma have a unique nucleotide composition.
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Affiliation(s)
- Seungwoo Lee
- BK21 Plus Program for Creative Veterinary Science Research, Research Institute for Veterinary Science and College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea
| | - Seungwoo Hwang
- Korean Bioinformation Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, South Korea
| | - Hee Jeong Yu
- BK21 Plus Program for Creative Veterinary Science Research, Research Institute for Veterinary Science and College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea
| | - Dayoung Oh
- BK21 Plus Program for Creative Veterinary Science Research, Research Institute for Veterinary Science and College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea
| | - Yu Jung Choi
- BK21 Plus Program for Creative Veterinary Science Research, Research Institute for Veterinary Science and College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea
| | - Myung-Chul Kim
- BK21 Plus Program for Creative Veterinary Science Research, Research Institute for Veterinary Science and College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea
| | - Yongbaek Kim
- BK21 Plus Program for Creative Veterinary Science Research, Research Institute for Veterinary Science and College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea
| | - Doug-Young Ryu
- BK21 Plus Program for Creative Veterinary Science Research, Research Institute for Veterinary Science and College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea
- * E-mail:
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Affiliation(s)
| | - Nam-Jae Kim
- Department of Physical Therapy, Sarangplus hospital Major in Physical Therapy
| | - Min-Soo Lee
- Graduate School of Public Health Science, Eulji University
| | - So-Ra Moon
- Graduate School of Public Health Science, Eulji University
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Abstract
A 3-year-old neutered female poodle with a long history of dermatophytic skin disease was
presented with lethargy, anorexia and progressive weight loss. Abdominal ultrasonography
revealed markedly enlarged mesenteric lymph nodes and multiple hypoechoic foci in the
spleen. Cytology of the mesenteric lymph nodes and spleen showed granulomatous
inflammation with fungal organisms and negatively stained intracytoplasmic bacterial rods
consistent with Mycobacteria spp. Based on culture, multiplex polymerase
chain reaction and sequence analysis, the bacterium was identified as
Mycobacterium avium subspecies hominissuis. Despite treatment with
antibiotics, the dog’s condition deteriorated, and it died approximately 3 weeks after
first presentation.
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Affiliation(s)
- Myung-Chul Kim
- Laboratory of Veterinary Clinical Pathology, College of Veterinary Medicine, Seoul National University, Seoul 151-742, Republic of Korea
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Suh JY, Kim HS, Kim MC, Kong KH. Design and Evaluation of Synthetic Peptides Corresponding to the Sweetness Loop of the Sweet-Tasting Protein Brazzein. B KOREAN CHEM SOC 2014. [DOI: 10.5012/bkcs.2014.35.11.3353] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Kim MC, Han SK, Kim SK. Changes in the Range of Motion of the Hip Joint and the Muscle Activity of the Rectus Femoris and Biceps Femoris of Stroke Patients during Obstacles Crossing on the Ground and Underwater. J Phys Ther Sci 2014; 26:1143-6. [PMID: 25202169 PMCID: PMC4155208 DOI: 10.1589/jpts.26.1143] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Accepted: 02/16/2014] [Indexed: 11/24/2022] Open
Abstract
[Purpose] The purpose of this study was to examine range of motion (ROM) and the muscle
activity of stroke patients during obstacle task on the ground and underwater. [Subjects]
The subjects of this study were seven stroke patients in a hospital located in Daejeon,
South Korea. [Methods] The measurements in this study were conducted in an exercise
therapy room and a pool dedicated to underwater exercise (water temperature 33.5 °C, air
temperature 27 °C) in the hospital building. The pool’s water depth was determined by
considering the levels of the xiphoid process of the study subjects. Ten-centimeter-high
obstacles were used. An electrogoniometer was used to examine the ROM of flexion and
extension of the hip joints on the affected side. An MP150 system a BioNomadix 2-channel
wireless EMG transmitter was used to examine the muscle activity of the rectus femoris and
biceps femoris of the affected side. [Conclusion] The results suggest that the unaffected
side was supported, that the affected side moved, and that the hip joint was bent more
underwater than on the ground. The rectus femoris and bicpes femoris were activated
significantly less underwater than on the ground in all sections.
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Affiliation(s)
- Myung-Chul Kim
- Department of Physical Therapy, Faculty of Health Science, Eulji University, Republic of Korea
| | - Seul-Ki Han
- Department of Health Science, Graduate School, Eulji University, Republic of Korea
| | - Seung-Kyun Kim
- Department of Health Science, Graduate School, Eulji University, Republic of Korea
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Kim MC, Lee SW, Ryu DY, Cui FJ, Bhak J, Kim Y. Identification and characterization of microRNAs in normal equine tissues by Next Generation Sequencing. PLoS One 2014; 9:e93662. [PMID: 24695583 PMCID: PMC3973549 DOI: 10.1371/journal.pone.0093662] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Accepted: 03/04/2014] [Indexed: 12/31/2022] Open
Abstract
The role of microRNAs (miRNAs) as a post-transcriptional gene regulator has been elucidated in a broad range of organisms including domestic animals. Characterization of miRNAs in normal tissues is an important step to investigate the functions of miRNAs in various physiological and pathological conditions. Using Illumina Next Generation Sequencing (NGS) technology, we identified a total of 292 known and 329 novel miRNAs in normal horse tissues including skeletal muscle, colon and liver. Distinct sets of miRNAs were differentially expressed in a tissue-specific manner. The miRNA genes were distributed across all the chromosomes except chromosomes 29 and 31 in the horse reference genome. In some chromosomes, multiple miRNAs were clustered and considered to be polycistronic transcript. A base composition analysis showed that equine miRNAs had a higher frequency of A+U than G+C. Furthermore, U tended to be more frequent at the 5′ end of miRNA sequences. This is the first experimental study that identifies and characterizes the global miRNA expression profile in normal horse tissues. The present study enriches the horse miRNA database and provides useful information for further research dissecting biological functions of miRNAs in horse.
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Affiliation(s)
- Myung-Chul Kim
- Laboratory of Clinical Pathology, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Seung-Woo Lee
- Laboratory of Environmental Health, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Doug-Young Ryu
- Laboratory of Environmental Health, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
- Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Feng-Ji Cui
- Laboratory of Clinical Pathology, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Jong Bhak
- Theragen Bio Institute, Suwon-city, Gyeonggi-do, Republic of Korea
| | - Yongbaek Kim
- Laboratory of Clinical Pathology, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
- Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
- * E-mail:
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Kim MC, Cui FJ, Kim Y. Hydrogen peroxide promotes epithelial to mesenchymal transition and stemness in human malignant mesothelioma cells. Asian Pac J Cancer Prev 2014; 14:3625-30. [PMID: 23886156 DOI: 10.7314/apjcp.2013.14.6.3625] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Reactive oxygen species (ROS) are known to promote mesothelial carcinogenesis that is closely associated with asbestos fibers and inflammation. Epithelial to mesenchymal cell transition (EMT) is an important process involved in the progression of tumors, providing cancer cells with aggressiveness. The present study was performed to determine if EMT is induced by H2O2 in human malignant mesothelioma (HMM) cells. Cultured HMM cells were treated with H2O2, followed by measuring expression levels of EMT-related genes and proteins. Immunohistochemically, TWIST1 expression was confined to sarcomatous cells in HMM tissues, but not in epithelioid cells. Treatment of HMM cells with H2O2 promoted EMT, as indicated by increased expression levels of vimentin, SLUG and TWIST1, and decreased E-cadherin expression. Expression of stemness genes such as OCT4, SOX2 and NANOG was also significantly increased by treatment of HMM cells with H2O2. Alteration of these genes was mediated via activation of hypoxia inducible factor 1 alpha (HIF-1α) and transforming growth factor beta 1 (TGF-β1). Considering that treatment with H2O2 results in excess ROS, the present study suggests that oxidative stress may play a critical role in HMM carcinogenesis by promoting EMT processes and enhancing the expression of stemness genes.
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Affiliation(s)
- Myung-Chul Kim
- Laboratory of Clinical Pathology, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, South Korea
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Kim MC, D'Costa S, Suter S, Kim Y. Evaluation of a side population of canine lymphoma cells using Hoechst 33342 dye. J Vet Sci 2013; 14:481-6. [PMID: 23820219 PMCID: PMC3885743 DOI: 10.4142/jvs.2013.14.4.481] [Citation(s) in RCA: 7] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2013] [Accepted: 04/11/2013] [Indexed: 01/30/2023] Open
Abstract
Cancer stem cell (CSC) research has increased exponentially to gain further insight into the mechanisms underlying both carcinogenesis and chemotherapy resistance. The present study was performed to explore the potential value of a side population (SP) assay for identifying and characterizing putative CSCs among canine lymphoma cells. Canine lymphoma cells from cell lines and clinical samples were subjected to the SP assay consisting of Hoechst 33342 staining and subsequent flow cytometric analysis. The SP assay revealed various amounts of a SP fraction among the canine lymphoma cells. The percentages of SP were not affected by inhibitors of membrane transporters, verapamil hydrochloride, or fumitremorgin C. Most of the canine lymphoma cells expressed high levels of Bmi-1 and membrane transporter proteins such as ABCG2 and phosphorylated (p)-glycoprotein. This investigation lays the groundwork for further studies of the biological behaviors and molecular characteristics of CSCs in cases of canine lymphoma.
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Affiliation(s)
- Myung-Chul Kim
- The Laboratory of Clinical Pathology and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul 151-742, Korea
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Kahn MR, Fallahi A, Kim MC, Esquitin R, Robbins MJ. Coronary artery disease in a large renal transplant population: implications for management. Am J Transplant 2011; 11:2665-74. [PMID: 21920018 DOI: 10.1111/j.1600-6143.2011.03734.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Coronary artery disease (CAD) accounts for approximately one-half of the sizable mortality in patients with end-stage renal disease who have undergone transplantation. The study was a retrospective review of 1460 patients who underwent renal transplantation at the Mount Sinai Medical Center from January 1, 2000 to October 31, 2009. Noninvasive stress testing was performed in 848 patients (88.1%) with 278 patients (32.8%) having abnormal results. Cardiac catheterization was performed in 357 patients (37.1%) and of these, 212 patients had obstructive disease (59.4%). At 5 years posttransplant, there was no statistically significant difference between those with nonobstructive CAD and those who required percutaneous or surgical interventions (adjusted hazard ratio [aHR], 1.243; CI 95%, 0.513-3.010; p = 0.630). Those with medically managed obstructive CAD had significantly higher rates of death at the 5-year period when compared to those who received percutaneous intervention (aHR, 3.792; CI 95%, 1.320-10.895; p = 0.013) or those who received coronary artery bypass grafting (aHR, 6.691; CI 95%, 1.200-37.323). Because noninvasive imaging is poorly predictive of coronary disease in this high-risk population, an anatomic diagnosis is recommended. Revascularization may result in improved long-term outcomes.
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Affiliation(s)
- M R Kahn
- Mount Sinai School of Medicine, New York, NY, USA.
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41
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Kim MC. Linear stability analysis on the onset of Soret-driven motion in a nanoparticles suspension. Eur Phys J E Soft Matter 2011; 34:27. [PMID: 21400048 DOI: 10.1140/epje/i2011-11027-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2010] [Accepted: 02/14/2011] [Indexed: 05/30/2023]
Abstract
The onset of Soret-driven instability in binary mixture heated from above is analysed using the linear stability theory. The horizontal fluid layer placed between two plates is in a thermally stable state but the Soret diffusion can induce buoyancy-driven convection in the case of a negative Soret coefficient. It is well known that convective motion sets in from both boundaries if the Rayleigh number exceeds its critical value. For the case of highly unstable density stratification the buoyancy-driven motion sets in during the transient diffusion stage. The new stability equations are derived and are solved analytically and numerically. Here the stability limits which are related to the onset time of instabilities and wave number are presented as a function of the Rayleigh number, Lewis number and the separation ratio. The present stability criteria are compared with the existing experimental data.
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Affiliation(s)
- M C Kim
- Department of Chemical Engineering, Jeju National University, Republic of Korea.
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42
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Paek MR, Lee YJ, Yoon H, Kang HM, Kim MC, Choi JG, Jeong OM, Kwon JS, Moon OK, Lee SJ, Kwon JH. Survival rate of H5N1 highly pathogenic avian influenza viruses at different temperatures. Poult Sci 2010; 89:1647-50. [PMID: 20634520 DOI: 10.3382/ps.2010-00800] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The survival rate of Korean H5N1 highly pathogenic avian influenza (HPAI) viruses was investigated at different temperatures under the laboratory conditions. The estimated survival days for a starting viral concentration of 10(6.5) 50% egg infectious dose/0.1 mL were 930, 1,042, and 3,213 d at 4 degrees C; 226, 232, and 293 d at 20 degrees C; and 51, 55, and 58 d at 30 degrees C for A/chicken/Korea/ES/03, A/chicken/Korea/IS/06, and A/chicken/Korea/Gimje/08 (Gimje/08) viruses, respectively. The stability of the Gimje/08 virus was statistically significant compared with the other 2 viruses except for the data between Gimje/08 and A/chicken/Korea/IS/06 virus at 30 degrees C. This result indicated that the survival rate of 3 Korean HPAI viruses is different at various temperatures, which might have partially influenced the large scale of HPAI outbreak in Korea in 2008.
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Affiliation(s)
- M R Paek
- Avian Disease Division, National Veterinary Research and Quarantine Service, Anyang, Gyeonggi, 430-757, South Korea
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Lee JY, Jee HC, Jeong SM, Park CS, Kim MC. Comparison of anaesthetic and cardiorespiratory effects of xylazine or medetomidine in combination with tiletamine/zolazepam in pigs. Vet Rec 2010; 167:245-9. [PMID: 20710032 DOI: 10.1136/vr.c3611] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Two different combinations of anaesthetics were evaluated and compared in a prospective randomised crossover experimental study in pigs. One of the two combinations was administered intramuscularly to each of six Landrace x Yorkshire mixed-breed pigs. The combinations were: 2.2 mg/kg xylazine and 4.4 mg/kg tiletamine/zolazepam (2.2 mg/kg tiletamine plus 2.2 mg/kg zolazepam) (XTZ); and 0.04 mg/kg medetomidine and 4.4 mg/kg tiletamine/zolazepam (MTZ). The anaesthesia and recovery times, score for anaesthetic effect and cardiopulmonary parameters were recorded for each pig. Anaesthesia was successfully induced in all of the pigs. Both drug combinations provided smooth induction and good immobilisation, and their anaesthetic effects were similar. In both treatment groups, the mean heart rate decreased significantly five minutes after the drugs were administered and remained consistent for 70 minutes, with no significant difference between the XTZ and MTZ groups. However, there were differences in cardiopulmonary effects between the groups. The arterial pressure was significantly higher in the MTZ group than in the XTZ group. The initial hypertension associated with medetomidine was more marked than the initial hypertension associated with xylazine. Arterial oxygen partial pressure and arterial oxygen saturation decreased significantly from baseline in both groups. The respiratory rates and levels of blood gases were similar in both groups. Hypoventilation and hypoxaemia were observed in both groups. The scores for anaesthetic effect, induction time, anaesthesia time and recovery times were similar in the two groups.
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Affiliation(s)
- J Y Lee
- Laboratory of Veterinary Surgery, College of Veterinary Medicine, Chungnam National University, 220 Kungdong, Yoosung-gu, Daejeon 305-764, Korea
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Kwon YK, Kwon KY, Joh SJ, Kim MC, Kang MS, Lee YJ, Kwon JH, Kim JH. The susceptibility of magpies to a highly pathogenic avian influenza virus subtype H5N1. Poult Sci 2010; 89:1156-61. [PMID: 20460661 DOI: 10.3382/ps.2009-00549] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Korean wild magpies (Pica pica sericea) were intranasally inoculated with highly pathogenic avian influenza (A/Chicken/Korea/ES/03 virus) (H5N1), which was classified as clade 2.5. We estimated viral replication, death after infection, and histology and immunohistochemistry. This species was highly susceptible to severe infection; 100% of birds died within 5 to 8 d. The virus was detected from oropharyngeal (1 to 5 d postinfection) and cloacal (3 to 5 d postinfection) swabs from infected magpies. At necropsy, the prominent lesions were coalescing necrosis of the pancreas with enlargement of livers and spleens. Microscopically, pancreas, brain, heart, adrenal gland, and kidney were most consistently affected with necrotic and inflammatory changes, and viral antigen was frequently demonstrated in the parenchyma of these organs. As a result, Korean wild magpies were very susceptible to avian influenza (H5N1) virus.
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Affiliation(s)
- Y K Kwon
- National Veterinary Research and Quarantine Service, Anyang, Kyeonggi 430-824, Korea.
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Kang MS, Jang H, Kim MC, Kim MJ, Joh SJ, Kwon JH, Kwon YK. Development of a stabilizer for lyophilization of an attenuated duck viral hepatitis vaccine. Poult Sci 2010; 89:1167-70. [PMID: 20460663 DOI: 10.3382/ps.2009-00620] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The live attenuated vaccine against duck viral hepatitis currently available in Korea requires special freezers for storage and transportation with extra costs involved. The development of a lyophilization stabilizer for live attenuated duck viral hepatitis virus (DHV) vaccines, therefore, has been highly recommended for the wider application of the vaccines. Four conventional vaccine stabilizer formulations containing a disaccharide, such as lactose, trehalose, or sucrose, and new formulations containing sorbitol were tested for their efficacy in stabilizing a new attenuated DHV type 3 vaccine candidate under different storage temperatures, 4 and 37 degrees C. The vaccine virus and each stabilizer formulation were combined and submitted to lyophilization and the viability of the virus was measured in 7-d-old specific-pathogen-free chicken embryos by determining the 50% egg lethal dose. Stabilizer formulations containing 2, 4, or 8% sorbitol preserved the viability of the vaccine virus much better than the other stabilizer formulations and 2% sorbitol was the optimal concentration in a standard stabilizing buffer, phosphate glutamate gelatin (0.0038 M KH2PO4, 0.0071 M K2HPO4, 0.0049 M monosodium L-glutamate, and 0.5% gelatin). The results demonstrate that the stabilizer formulation containing 2% sorbitol and 0.5% gelatin can be used for convenient storage and transportation of live DHV vaccines.
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Affiliation(s)
- M S Kang
- National Veterinary Research and Quarantine Service, Ministry for Food, Agriculture, Forestry and Fisheries, Anyang, Gyeonggi, 430-824, Korea
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Kim S, Kim CO, Shin DH, Hong SH, Kim MC, Kim J, Choi SH, Kim T, Elliman RG, Kim YM. Self-assembled growth and luminescence of crystalline Si/SiOx core-shell nanowires. Nanotechnology 2010; 21:205601. [PMID: 20413841 DOI: 10.1088/0957-4484/21/20/205601] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Crystalline Si/SiOx core/shell nanowires (NWs) are self-assembled by annealing Ni-coated hydrogenated Si-rich SiOx (SRO:H) films at 1100 degrees C in the presence of Si powder. Plasma-enhanced chemical vapor deposition is used to grow 100 nm SRO:H thin films with varying silicon concentration (n(Si)). The NWs vary from SiOx nanowires to Si/SiOx core/shell structures depending on the composition of the SRO:H substrate, with the fraction of core/shell structures increasing with increasing Si concentration. As n(Si) increases from 37 to 43 at.%, the average diameter of the NWs also increases from 48 to 157 nm. A growth model based on the diffusion-assisted vapor-liquid-solid mechanism is proposed to explain how the core/shell structures are self-assembled. Photoluminescence (PL) spectra of the individual NWs have two major emission bands in the near UV (381 nm) and blue (423 nm) ranges at n(Si) = 43 at.%, named as UV and BL PL bands, respectively. In contrast, only the BL PL band is observed at n(Si) < or = 39 at.%. These results suggest that the BL and UV PL bands can be attributed to the defect states in the SiOx shell and at the Si core/SiOx shell interface, respectively, and that the BL band is closely related to the growth process of the NWs.
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Affiliation(s)
- S Kim
- Department of Applied Physics, College of Applied Science, Kyung Hee University, Yongin 446-701, Korea
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Cho GS, Kim W, Kim HH, Ryu SW, Kim MC, Ryu SY. Multicentre study of the safety of laparoscopic subtotal gastrectomy for gastric cancer in the elderly. Br J Surg 2009; 96:1437-42. [PMID: 19918857 DOI: 10.1002/bjs.6777] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND The aim of this study was to assess the safety and short-term value of laparoscopic gastrectomy in the elderly with gastric cancer compared with a younger cohort. METHODS Data on all patients with gastric cancer undergoing laparoscopic gastrectomy at ten institutions in Korea between May 1998 and December 2005 were collected. Patients under the age of 45 years and those undergoing total gastrectomy, proximal gastrectomy and pylorus-preserving gastrectomy were excluded. An analysis of clinicopathological data for patients aged 45-69 years (average-age group) and those aged 70 years or more (elderly group) was undertaken. RESULTS Co-morbidity was more common and postoperative hospital stay was longer in elderly patients. Pre-existing pulmonary and cardiovascular disease in the elderly contributed to respiratory dysfunction and intraperitoneal complications respectively. Tumour size and location, stage, methods of reconstruction and the number of combined operations were similar in the two groups. There were no significant differences in postoperative morbidity or mortality. CONCLUSION Although elderly patients had greater co-morbidity, laparoscopic gastrectomy was a safe treatment for gastric cancer in this age group.
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Affiliation(s)
- G S Cho
- Department of Surgery, Soonchunhyang University, Bucheon, Korea
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Kwon HC, Roh MS, Oh SY, Kim SH, Kim MC, Kim JS, Kim HJ. Prognostic value of expression of ERCC1, thymidylate synthase, and glutathione S-transferase P1 for 5-fluorouracil/oxaliplatin chemotherapy in advanced gastric cancer. Ann Oncol 2007; 18:504-9. [PMID: 17322540 DOI: 10.1093/annonc/mdl430] [Citation(s) in RCA: 156] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND The aim of this study was to determine whether expressions of the excision repair cross-complementing (ERCC1), thymidylate synthase (TS), and glutathione S-transferase P1 (GSTP1) predict clinical outcome in patients with advanced gastric cancer treated with fluorouracil (5-fluorouracil)/oxaliplatin chemotherapy. PATIENTS AND METHODS The study population consisted of 64 advanced gastric cancer patients (median age 51 years). Patients were treated with oxaliplatin 85 mg/m(2) as a 2-h infusion at day 1 plus leucovorin 20 mg/m(2) over 10 min, followed by 5-FU bolus 400 mg/m(2) and 22-h continuous infusion of 600 mg/m(2) at days 1-2. Treatment was repeated in 2-week intervals. The expressions of ERCC1, TS, and GSTP1 of primary tumors were examined by immunohistochemistry. RESULTS The positive rates of ERCC1, TS, and GSTP1 were 70.3%, 29.7%, and 50.0%, respectively. The patients without ERCC1 expression were more likely to respond to chemotherapy (P = 0.045). There were no significant differences between response and TS or GSTP1 expression pattern (P = 0.813, P = 0.305, respectively). Median overall survival (OS) was significantly longer in patients without ERCC1 expression (P = 0.0396). TS or GSTP1 expression were not related to survival (P = 0.4578, P = 0.8121, respectively). Multivariate analysis revealed that ERCC1 expression significantly impacted on OS (hazard ratio 1.92, P = 0.037). CONCLUSION Immunohistochemical studies for ERCC1 may be useful in prediction of the clinical outcome in advanced gastric cancer patients treated with 5-FU and oxaliplatin.
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Affiliation(s)
- H-C Kwon
- Department of Internal Medicine, Dong-A University College of Medicine, Busan, Korea
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Hong JT, Lee SW, Son BC, Sung JH, Choi HC, Kim MC. Delayed occurrence of intracranial supratentorial chondroma following compound depressed skull fracture. Acta Neurochir (Wien) 2005; 147:343-5; discussion 345. [PMID: 15605200 DOI: 10.1007/s00701-004-0430-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
We describe an exceptional case of a frontal convexity chondroma arising at the site of a compound depressed skull fracture operated on 12 years earlier. We conclude that intracranial chondroma should be included in the differential diagnosis of a calcified mass for the patients who had had a compound, depressed skull fracture along the suture line, especially in cases of dural laceration by the fragmented bone.
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Affiliation(s)
- J T Hong
- Department of Neurosurgery, St. Vincent Hospital, The Catholic University of Korea, Chi-dong, Paldal-ku, Suwon, Korea
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Kim HH, Kim KH, Kim DH, Kim MC, Kim BS, Kim YW, Kim YI, Kim YH, Kim W, Kim WW, Kim JJ, Kim TB, Ryu SY, Ryu SW, Min YD, Park YC, Park CH, Baik HK, Song KY, Yang HK, Lee KY, Lee BE, Lee BH, Lee YJ, Lee WK, Lee JH, Lee HJ, Jeon HM, Jung SJ, Cho GS, Chin HM, Choi SH, Choi YB, Han SU, Hur KY, Hur YS, Hyung WJ, Hong BH. Nationwide Survey of Laparoscopic Gastric Surgery in Korea, 2004. ACTA ACUST UNITED AC 2005. [DOI: 10.5230/jkgca.2005.5.4.295] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- H H Kim
- Department of Surgery, College of Medicine, Seoul National University
| | - K H Kim
- Department of Surgery, DongKang Medical Center
| | - D H Kim
- Department of Surgery, Pusan National University
| | - M C Kim
- Department of Surgery, Dong-A University
| | - B S Kim
- Department of Surgery, Ulsan University
| | | | - Y I Kim
- 7Department of Surgery, Ewha Woman's University
| | - Y H Kim
- Department of Surgery, Gangneung Asan Hospital
| | - W Kim
- Department of Surgery, The Catholic University of Korea
| | - W W Kim
- Department of Surgery, Pochon CHA University
| | - J J Kim
- Department of Surgery, The Catholic University of Korea
| | - T B Kim
- Department of Surgery, Kyungpook National University
| | - S Y Ryu
- Department of Surgery, Chonnam National University
| | - S W Ryu
- Department of Surgery, Keimyung University
| | - Y D Min
- Department of Surgery, Chosun University
| | - Y C Park
- Department of Surgery, Dankook University
| | - C H Park
- Department of Surgery, The Catholic University of Korea
| | - H K Baik
- Department of Surgery, Hanyang University
| | - K Y Song
- Department of Surgery, The Catholic University of Korea
| | - H K Yang
- Department of Surgery, College of Medicine, Seoul National University
| | - K Y Lee
- Department of Surgery, Kyung Hee University
| | - B E Lee
- Department of Surgery, Changwon Fatima Hospital
| | - B H Lee
- Department of Surgery, Hallym University
| | - Y J Lee
- Department of Surgery, Gyeongsang National University
| | - W K Lee
- Department of Surgery, Gachon Medical School
| | - J H Lee
- 7Department of Surgery, Ewha Woman's University
| | - H J Lee
- Department of Surgery, College of Medicine, Seoul National University
| | - H M Jeon
- Department of Surgery, The Catholic University of Korea
| | - S J Jung
- Department of Surgery, Daegu Catholic University
| | - G S Cho
- Department of Surgery, Soonchunhyang University
| | - H M Chin
- Department of Surgery, The Catholic University of Korea
| | - S H Choi
- Department of Surgery, Yonsei University
| | - Y B Choi
- Department of Surgery, Ulsan University
| | - S U Han
- Department of Surgery, Ajou University
| | - K Y Hur
- Department of Surgery, Hansol Hospital
| | - Y S Hur
- Department of Surgery, Inha University
| | - W J Hyung
- Department of Surgery, Yonsei University
| | - B H Hong
- Department of Surgery, Eulji University
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