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Ku B, Eisenbarth D, Baek S, Jeong TK, Kang JG, Hwang D, Noh MG, Choi C, Choi S, Seol T, Kim H, Kim YH, Woo SM, Kong SY, Lim DS. PRMT1 promotes pancreatic cancer development and resistance to chemotherapy. Cell Rep Med 2024; 5:101461. [PMID: 38460517 PMCID: PMC10983040 DOI: 10.1016/j.xcrm.2024.101461] [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: 02/28/2023] [Revised: 12/28/2023] [Accepted: 02/14/2024] [Indexed: 03/11/2024]
Abstract
Pancreatic ductal adenocarcinoma (PDAC) remains one of the most lethal types of cancer, and novel treatment regimens are direly needed. Epigenetic regulation contributes to the development of various cancer types, but its role in the development of and potential as a therapeutic target for PDAC remains underexplored. Here, we show that PRMT1 is highly expressed in murine and human pancreatic cancer and is essential for cancer cell proliferation and tumorigenesis. Deletion of PRMT1 delays pancreatic cancer development in a KRAS-dependent mouse model, and multi-omics analyses reveal that PRMT1 depletion leads to global changes in chromatin accessibility and transcription, resulting in reduced glycolysis and a decrease in tumorigenic capacity. Pharmacological inhibition of PRMT1 in combination with gemcitabine has a synergistic effect on pancreatic tumor growth in vitro and in vivo. Collectively, our findings implicate PRMT1 as a key regulator of pancreatic cancer development and a promising target for combination therapy.
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Affiliation(s)
- Bomin Ku
- National Creative Research Center for Cell Plasticity, KAIST Stem Cell Center, Department of Biological Sciences, KAIST, Daejeon 34141, Republic of Korea
| | - David Eisenbarth
- National Creative Research Center for Cell Plasticity, KAIST Stem Cell Center, Department of Biological Sciences, KAIST, Daejeon 34141, Republic of Korea; Brown Center for Immunotherapy, Department of Medicine, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Seonguk Baek
- National Creative Research Center for Cell Plasticity, KAIST Stem Cell Center, Department of Biological Sciences, KAIST, Daejeon 34141, Republic of Korea
| | - Tae-Keun Jeong
- National Creative Research Center for Cell Plasticity, KAIST Stem Cell Center, Department of Biological Sciences, KAIST, Daejeon 34141, Republic of Korea
| | - Ju-Gyeong Kang
- National Creative Research Center for Cell Plasticity, KAIST Stem Cell Center, Department of Biological Sciences, KAIST, Daejeon 34141, Republic of Korea
| | - Daehee Hwang
- National Creative Research Center for Cell Plasticity, KAIST Stem Cell Center, Department of Biological Sciences, KAIST, Daejeon 34141, Republic of Korea
| | - Myung-Giun Noh
- Department of Pathology, Chonnam National University Medical School and Hwasun Hospital, Hwasun-gun, Jeonnam 58128, Republic of Korea
| | - Chan Choi
- Department of Pathology, Chonnam National University Medical School and Hwasun Hospital, Hwasun-gun, Jeonnam 58128, Republic of Korea
| | - Sungwoo Choi
- National Creative Research Center for Cell Plasticity, KAIST Stem Cell Center, Department of Biological Sciences, KAIST, Daejeon 34141, Republic of Korea
| | - Taejun Seol
- National Creative Research Center for Cell Plasticity, KAIST Stem Cell Center, Department of Biological Sciences, KAIST, Daejeon 34141, Republic of Korea
| | - Hail Kim
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
| | - Yun-Hee Kim
- Research Institute, National Cancer Center, Goyang 10408, Republic of Korea
| | - Sang Myung Woo
- Research Institute, National Cancer Center, Goyang 10408, Republic of Korea
| | - Sun-Young Kong
- Targeted Therapy Branch, Division of Rare and Refractory Cancer, Research Institute, National Cancer Center, Goyang 10408, Republic of Korea
| | - Dae-Sik Lim
- National Creative Research Center for Cell Plasticity, KAIST Stem Cell Center, Department of Biological Sciences, KAIST, Daejeon 34141, Republic of Korea.
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Choi C, Thor M, Jiang J, Rimner A, Veeraraghavan H. Determining the Dosimetric Accuracy of Deep Learning-Based Fully Automated Registration-Segmentation Approach for Thoracic Cancer Organs-at-Risk Contouring. Int J Radiat Oncol Biol Phys 2023; 117:e656-e657. [PMID: 37785947 DOI: 10.1016/j.ijrobp.2023.06.2087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) For adaptive radiation therapy (ART), the contours on the planning CT (pCT) are frequently propagated to cone-beam CT (CBCT) via deformable image registration and manually edited, which is observer-dependent and time-consuming. To automate this process, we created a fully automated workflow by combining a deep learning (DL)-based pCT segmentation model with a CT-to-CBCT registration-segmentation DL model. The purpose of our research is to determine how using the proposed workflow's automatically generated contours affects thoracic organs-at-risk sparing (OAR). MATERIALS/METHODS Seven patients with locally advanced non-small cell lung cancer who underwent treatment with intensity modulated radiation therapy were included in this study. Each patient's pCT was segmented using a published DL model that has been used for generating thoracic OAR segmentation and radiotherapy planning in the clinic since July of 2020. Next, pCT was deformably registered using a published recurrent deep registration-segmentation method. Whereas the original method's segmentation sub-network was only trained to segment esophagus, the registration sub-network was used to propagate contours for heart, esophagus, and the proximal bronchial tree (PBT). Geometric segmentation accuracy using the Dice Similarity Coefficient (DSC) and the 95th percentile Hausdorff Distance (HD) and dose metrics including the mean esophageal dose (MED) and D90% of the heart (D90) were computed from the total accumulated dose for the first two weeks of treatment. RESULTS The esophagus had a high DSC and a low HD (0.93 and 2.85mm) and conversely, the heart had lower accuracy (DSC = 0.85, HD = 22.06mm). PBT showed relatively high performance as well, with DSC of 0.91 and HD of 2.28mm, owing to its proximity to the esophagus. The accumulated MED for manual contour was slightly lower than AI-contours (11.34 vs 11.83 Gy), suggesting reliability of the proposed workflow. The reverse is seen for the D90 of the heart (manual = 1.74 and AI-contour = 1.56 Gy), likely due to the heart not being included in the original DL framework. CONCLUSION This study reported preliminary results on the feasibility of using a fully automated and patient-specific workflow for CBCT auto-segmentation in ART, confirming its role as a geometrically and dosimetrically accurate solution for thoracic OARs. However, because it is currently limited to the esophagus, we believe that re-training the algorithm will increase confidence in other OARs such as the heart and lungs.
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Affiliation(s)
- C Choi
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY
| | - M Thor
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY
| | - J Jiang
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY
| | - A Rimner
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY
| | - H Veeraraghavan
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY
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Choi C, Mankuzhy NP, Jiang J, Elguindi S, Thor M, Rimner A, Veeraraghavan H. Clinical Feasibility of Deep Learning-Based CT during Treatment CBCT Tumor Registration-Segmentation in Thoracic Radiotherapy (RT). Int J Radiat Oncol Biol Phys 2023; 117:e656. [PMID: 37785946 DOI: 10.1016/j.ijrobp.2023.06.2086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Accurate tumor segmentation on weekly cone-beam computed tomography (CBCT) images is critical for image-guided and adaptive radiation therapy (ART). In thoracic RT, low image contrast, imaging artifact, and geometry and image modality differences from the planning CT (pCT) typically limits accurate tumor segmentation and registration. Here, we explored the clinical feasibility of using 3D recurrent registration-segmentation deep learning (DL) that combines patient-specific anatomic and shape context from higher contrast pCT and planning contours (PACs) for tumor segmentation on during treatment CBCTs. MATERIALS/METHODS We included the pCT and CBCTs from six patients with locally advanced non-small cell lung cancer (LA-NSCLC) who had underwent RT. Cases were selected with a primary GTV contoured and labeled separately from the nodal GTV. Using rigidly aligned pCT and CBCT as inputs, DL auto-segmented the GTV on week 1 and 6 CBCTs, and these auto-segmented contours were manually inspected by a radiation oncologist that edited the GTV according to clinical standard quality. The Dice similarity coefficient (DSC), Hausdorff distance (HD95), mean surface distance (MSD), surface DSC (sDSC) and added path length (APL) were used to quantitively compare the DL and the edited GTV. RESULTS The primary GTV was in the right lung in five cases, and left lung in one case. Manual adjustments were typically made at the interface of GTV and lung parenchyma with partial inclusion of adjacent vessels. Hypodensities within the GTV were sometimes not segmented in all axial slices resulting in discontinuous components. The quantitative comparison between the edited and DL-generated GTV is shown in Table 1. For week 1, the average DSC and HD95 were 0.87 and 6.94 mm, respectively. The performance for week 6 was slightly lower than week 1, with a DSC of 0.85 and HD95 of 7.22 mm. CONCLUSION The agreement with the generated DL GTV and the edited GTV was high in week 1 and decreased somewhat later during the treatment course possibly due to a higher impact of geometric changes in tumor and adjacent structures. The proposed DL algorithm showed reasonable performance throughout the treatment, supporting its potential for use into clinical routine for LA-NSCLC.
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Affiliation(s)
- C Choi
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY
| | - N P Mankuzhy
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY
| | - J Jiang
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY
| | - S Elguindi
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY
| | - M Thor
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY
| | - A Rimner
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY
| | - H Veeraraghavan
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY
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Noh JI, Ahn EJ, Noh MG, Moon KS, Chung E, Choi C, Lee KH, Kim SS. Orthotopic Mouse Models of Urinary Bladder Cancer. In Vivo 2023; 37:2039-2043. [PMID: 37652486 PMCID: PMC10500489 DOI: 10.21873/invivo.13301] [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: 03/31/2023] [Revised: 06/23/2023] [Accepted: 06/26/2023] [Indexed: 09/02/2023]
Abstract
BACKGROUND/AIM Urinary bladder cancer has various etiologies and tends to recur and then progress to a higher grade. When muscles are invaded, the response to conventional therapy is poor and the quality of life deteriorates rapidly. Here, we summarize and compare two representative methods used to create the syngeneic mouse models required for immunological research. MATERIALS AND METHODS In this study, we utilized six-week-old female C3H/HeNCrl mice and the mouse bladder tumor cell line MBT-2. The first method involved transurethral catheterization with poly-L-lysine pretreatment (catheter group), while the second method involved transperitoneal incision and direct injection of tumor cells into the bladder wall (open group). Mouse postoperative status was monitored on a weekly basis using magnetic resonance imaging (MRI). RESULTS The catheter group had a tumor development rate of 47% (7 out of 15 mice), with only 1 mouse developing an intravesical tumor. In contrast, the open group had a higher tumor formation rate of 69% (47 out of 68 mice), with 27 mice showing intravesical tumor formation. Notably, with a lower cell count, urinary obstruction events were observed 2 weeks post-inoculation, which is one week later than the higher cell count group. CONCLUSION In this study, we conducted a comparative analysis between the transurethral catheterization method and the transperitoneal incision and direct injection method in animal bladder tumor models. Our findings provide evidence of the consistent effectiveness in constructing a stable model within the open group. Well-designed orthotopic animal models are essential.
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Affiliation(s)
- Ji-In Noh
- Department of Pathology, Chonnam National University Research Institute of Medical Science, Chonnam National University Hwasun Hospital and Medical School, Hwasun, Republic of Korea
| | - Eun-Jung Ahn
- Department of Neurosurgery, Chonnam National University Research Institute of Medical Science, Chonnam National University Hwasun Hospital and Medical School, Hwasun, Republic of Korea
| | - Myung-Giun Noh
- Department of Pathology, Chonnam National University Research Institute of Medical Science, Chonnam National University Hwasun Hospital and Medical School, Hwasun, Republic of Korea
| | - Kyung-Sub Moon
- Department of Neurosurgery, Chonnam National University Research Institute of Medical Science, Chonnam National University Hwasun Hospital and Medical School, Hwasun, Republic of Korea
| | - Euiheon Chung
- Department of Biomedical Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, Republic of Korea
| | - Chan Choi
- Department of Pathology, Chonnam National University Research Institute of Medical Science, Chonnam National University Hwasun Hospital and Medical School, Hwasun, Republic of Korea
| | - Kyung-Hwa Lee
- Department of Pathology, Chonnam National University Research Institute of Medical Science, Chonnam National University Hwasun Hospital and Medical School, Hwasun, Republic of Korea;
- BioMedical Sciences Graduate Program (BMSGP), Chonnam National University, Hwasun, Republic of Korea
| | - Sung Sun Kim
- Department of Pathology, Chonnam National University Medical School and Hospital, Gwangju, Republic of Korea
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Carter LM, Bellamy MB, Choi C, Kim CH, Bolch WE, Jokisch D, Kesner AL. Influence of Body Posture on Internal Organ Dosimetry: Radiocesium Exposure Modeling Using Novel Posture-dependent Mesh Computational Phantoms. Health Phys 2023; 125:137-146. [PMID: 37195207 PMCID: PMC10313736 DOI: 10.1097/hp.0000000000001701] [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] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
ABSTRACT Current practice in reference internal dosimetry assumes a fixed upright standing posture is maintained throughout the dose-integration period. Recently, the mesh-type ICRP adult reference computational phantoms were transformed into different body postures (e.g., sitting, squatting) for use in occupational dose reconstruction applications. Here, for the first time, we apply this phantom series to the study of organ dose estimates following radionuclide intake. We consider the specific cases of 137 Cs and 134 Cs ingestion (accidental/occupational intake) with attention to variability in absorbed dose as a function of posture. The ICRP Publication 137 systemic biokinetic model for soluble cesium ingestion was used to compute organ-level time-integrated activity coefficients for reference adults, over a 50-y dose-integration period, for 134 Cs and 137 Cs (and its radioactive progeny 137m Ba). Mean posture time-allocations (h d -1 for standing, sitting, and lying) were taken from published survey data. In accord with modern dosimetry formalisms (e.g., MIRD, ICRP), a posture weighting factor was introduced that accounts for the fraction of time spent within each independent posture. Absorbed dose coefficients were computed using PHITS Monte Carlo simulations. ICRP 103 tissue weighting factors were applied along with the posture weighting factors to obtain committed effective dose per unit intake (Sv Bq -1 ). For 137 Cs ingestion, most organ absorbed dose coefficients were negligibly to marginally higher (< ~3%) for sitting or crouched (lying fetal/semi-fetal) postures maintained over the dose commitment period, relative to the upright standing posture. The committed effective dose coefficients were 1.3 × 10 -8 Sv Bq -1 137 Cs for standing, sitting, or crouched postures; thus, the posture-weighted committed effective dose was not significantly different than the committed effective dose for a maintained upright standing posture. For 134 Cs ingestion, most organ absorbed dose coefficients for the sitting and crouched postures were significantly larger than the standing posture, but the differences were still considered minor (< ~8% for most organs). The committed effective dose coefficients were 1.2 × 10 -8 Sv Bq -1 134 Cs for the standing posture and 1.3 × 10 -8 Sv Bq -1 134 Cs for the sitting or crouched posture. The posture-weighted committed effective dose was 1.3 × 10 -8 Sv Bq -1 134 Cs. Body posture has minor influence on organ-level absorbed dose coefficients and committed effective dose for ingestion of soluble 137 Cs or 134 Cs.
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Affiliation(s)
- LM Carter
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - MB Bellamy
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - C Choi
- J. Crayton Pruitt Department of Nuclear Engineering, University of Florida, Gainesville, FL, USA
| | - CH Kim
- Department of Nuclear Engineering, Hanyang University, Seoul, Korea
| | - WE Bolch
- J. Crayton Pruitt Department of Nuclear Engineering, University of Florida, Gainesville, FL, USA
| | - D Jokisch
- Department of Physics, Francis Marion University, Florence, SC, USA
- Center for Radiation Protection Knowledge, Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | - AL Kesner
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY, USA
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Ahmed H, Files M, Saarela K, Morray B, Shivaram G, Greene C, Choi C, Mauchley D, McMullan D, Bohuta L, Hong B, Albers E, Kemna M, Rubio A, Law Y, Reed R, Friedland-Little J, Pacheco M, Hsu E. Initial Experience with a Decision Tree to Assess the Need for Concurrent Liver Transplantat in Fontan Patients Undergoing Heart Transplant. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Saqib R, Madhavan A, Thornber E, Siripurapu R, Choi C, Holsgrove D, Bailey K, Thomas M, Hilditch CA. The value of performing cerebrovascular CT angiography in major trauma patients: a 5-year retrospective review. Clin Radiol 2023; 78:e190-e196. [PMID: 36646530 DOI: 10.1016/j.crad.2022.10.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 08/07/2022] [Accepted: 10/17/2022] [Indexed: 01/15/2023]
Abstract
AIM To assess whether routine cerebrovascular imaging is required in all major trauma (MT) patients. MATERIALS AND METHODS All MT patients with cerebrovascular imaging between January 2015 and December 2020 were included in the study. Data were collated regarding the type of indication for computed tomography (CT) angiography imaging, time interval from the initial trauma, relevant trauma diagnoses on initial trauma imaging, and CT angiography. Findings, such as aneurysms, vascular malformations, luminal thrombus, venous sinus thrombosis, or vascular injury, were collated. Subsequent treatment with anti-coagulants/anti-platelets or surgical/radiological intervention was noted. Follow-up imaging was assessed for residual injury or complications. RESULTS Two hundred and fifty of the 6,251 MT patients underwent dedicated cerebrovascular imaging and were included in the study. Of these 41 (16.4%) had cervical artery or venous sinus injury. Further positive vascular findings were identified in 25/250 patients who presented with an incidental stroke or a vascular abnormality and were mislabelled as MT patients at presentation. One patient with a carotid injury subsequently died following a large infarction. Another patient with vertebral artery injury suffered a non-lethal stroke. No patients underwent surgery or intervention. CONCLUSION The present study showed that the overall incidence of detected blunt cerebrovascular injuries was very low (0.6%) and even lower for symptomatic vascular injury (0.03%). Routine cerebrovascular imaging is not recommended in all MT trauma patients, but instead, a continued case-by-case basis should be considered.
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Affiliation(s)
- R Saqib
- Department of Neuroradiology, Salford Royal Hospital-Northern Care Alliance NHS Foundation Trust, Salford, UK.
| | - A Madhavan
- Department of Neuroradiology, Salford Royal Hospital-Northern Care Alliance NHS Foundation Trust, Salford, UK
| | - E Thornber
- Department of Neuroradiology, Salford Royal Hospital-Northern Care Alliance NHS Foundation Trust, Salford, UK
| | - R Siripurapu
- Department of Neuroradiology, Salford Royal Hospital-Northern Care Alliance NHS Foundation Trust, Salford, UK
| | - C Choi
- Department of Neuroradiology, Salford Royal Hospital-Northern Care Alliance NHS Foundation Trust, Salford, UK
| | - D Holsgrove
- Department of Neurosurgery, Salford Royal Hospital-Northern Care Alliance NHS Foundation Trust, Salford, UK
| | - K Bailey
- Department of Anaesthetics and Critical Care, Salford Royal Hospital-Northern Care Alliance NHS Foundation Trust, Salford, UK
| | - M Thomas
- Department of Emergency Medicine, Salford Royal Hospital-Northern Care Alliance NHS Foundation Trust, Salford, UK
| | - C A Hilditch
- Department of Neuroradiology, Salford Royal Hospital-Northern Care Alliance NHS Foundation Trust, Salford, UK
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Venugopal A, Koi M, Choi C, Kim HR, Speliotes EK, Carethers JM. ALDH1A1 Expression Is Enriched in Early-Onset Colorectal Cancers. Gastroenterology 2022; 163:1679-1681.e1. [PMID: 35985512 PMCID: PMC10386851 DOI: 10.1053/j.gastro.2022.08.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 08/10/2022] [Accepted: 08/13/2022] [Indexed: 12/02/2022]
Affiliation(s)
- Anand Venugopal
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
| | - Minoru Koi
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
| | - Chan Choi
- Department of Pathology, Chonnam National University Medical School, Gwangju, Korea
| | - Hyeong-Rok Kim
- Department of Surgery, Chonnam National University Medical School, Gwangju, Korea
| | - Elizabeth K Speliotes
- Division of Gastroenterology and Hepatology, Department of Internal Medicine and, Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan
| | - John M Carethers
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Department of Human Genetics and, Rogel Cancer Center, University of Michigan, Ann Arbor, Michigan.
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May JM, Nomoni M, Budidha K, Choi C, Kyriacou PA. Mechanical Testing of Artificial Vessels and Tissues for Photoplethysmography Phantoms. Annu Int Conf IEEE Eng Med Biol Soc 2022; 2022:629-632. [PMID: 36086013 DOI: 10.1109/embc48229.2022.9871830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Various studies have looked at the efficiency of artificial vessel and tissue networks in the study of photoplethysmography (PPG) in an effort to better understand the origin of various morphological features present in the signal. Whilst there are all reasonable attempts made to replicate geometrical features such as vessel depth, vessel wall thickness and diameter etc., not many studies have attempted to replicate the mechanical properties such as vessel elasticity and tissue compressibility. This study reports two methods for tissue mechanical testing for the analysis of vessel elasticity and tissue compressibility. A two-part polydimethylsiloxane (PDMS) was used as a base material for both tissue and vessel construction, and the properties altered by changing the curing component ratio. Tissue compression properties were investigated using an industrially calibrated materials testing device using the protocol from the ASTM 0575-91 testing method. Vessel elasticity was investigated using a custom method and apparatus to report vessel diameter and length change simultaneously. Tissue compressive properties proved reasonably easy to replicate through catalyst alteration, however the vessel elasticity properties were found to be higher than expected at all reasonable catalyst ratios. The property of hyper-elasticity was observed in the artificial vessels though, leading to the conclusion that alternative material recipes or construction methods may be needed to correctly replicate the expected mechanical characteristics. Clinical Relevance- The latest generation of health monitoring devices, especially those that are wearable and used widely by individuals wishing to monitor their health daily are becoming smarter and more sophisticated in their functionality. The majority of such devices use photoplethysmography (PPG) as their primary monitoring technique. Being able to replicate the PPG in a phantom allows the continued study and development of devices, and to improve their functionality without the continued need for extensive user-testing.
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Ryu D, Choi C. P-38 Proper size and timing of endoscopic dilation in anastomotic stricture after near-total esophagectomy. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.04.129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Choi C, Ryu D. P-166 Local recurrence after endoscopic submucosal dissection of early gastric cancer. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.04.256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Koo JY, Lee KH, Choi JH, Chung HS, Choi C. Adrenal hemangioblastoma. J Pathol Transl Med 2022; 56:161-166. [PMID: 35209700 PMCID: PMC9119805 DOI: 10.4132/jptm.2021.12.28] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 12/28/2021] [Indexed: 12/04/2022] Open
Abstract
Hemangioblastoma (HB) is a rare benign tumor that most commonly occurs in the cerebellum. HB is composed of neoplastic stromal cells and abundant small vessels. However, the exact origin of stromal cells is controversial. Extraneural HBs have been reported in a small series, and peripheral HBs arising in the adrenal gland are extremely rare. Herein, we report a case of sporadic adrenal HB in a 54-year-old woman. The tumor was a well-circumscribed, yellow mass measuring 4.2 cm in diameter. Histologically, the tumor was composed of small blood vessels and vacuolated stromal cells with clear cytoplasm. On immunohistochemical stain, the stromal cells were positive for S-100 protein, neuron-specific enolase, and synaptophysin. The tumor did not reveal mutation of VHL alleles. We herein present a case of HB of the adrenal gland and review of the literature.
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Affiliation(s)
- Joo-Yeon Koo
- Department of Pathology, Chonnam National University Research Institute of Medical Science, Bio-Medical Sciences Graduate Program (BMSGP), Chonnam National University Hwasun Hospital and Medical School, Hwasun, Korea
| | - Kyung-Hwa Lee
- Department of Pathology, Chonnam National University Research Institute of Medical Science, Bio-Medical Sciences Graduate Program (BMSGP), Chonnam National University Hwasun Hospital and Medical School, Hwasun, Korea
| | - Joon Hyuk Choi
- Department of Pathology, Yeungnam University Hospital, Daegu, Korea
| | - Ho Seok Chung
- Department of Urology, Chonnam National University Research Institute of Medical Science, Bio-Medical Sciences Graduate Program (BMSGP), Chonnam National University Hwasun Hospital and Medical School, Hwasun, Korea
| | - Chan Choi
- Department of Pathology, Chonnam National University Research Institute of Medical Science, Bio-Medical Sciences Graduate Program (BMSGP), Chonnam National University Hwasun Hospital and Medical School, Hwasun, Korea
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Kim NI, Lee JS, Choi C, Nam JH, Choi YD, Kim HJ, Kim SS. Primary duodenal dedifferentiated liposarcoma: A case report and literature review. World J Clin Cases 2022; 10:2007-2014. [PMID: 35317136 PMCID: PMC8891777 DOI: 10.12998/wjcc.v10.i6.2007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 10/27/2021] [Accepted: 01/11/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Dedifferentiated liposarcoma (DDLPS) is an extremely rare neoplasm that exhibits various morphologies. The tumor is characterized by immunoreactivity to MDM2 and CDK4 and can be confirmed by detecting MDM2 amplification via fluorescence in situ hybridization (FISH). Herein, we report an unusual case of DDLPS arising from the duodenum.
CASE SUMMARY A 64-year-old man presented with repeated abdominal pain and weight loss. Radiologic studies revealed a mass of the duodenum involving the pancreas. The patient was treated with pylorus-preserving pancreaticoduodenectomy. Histologically, the tumor showed a high-grade sarcoma. Immunohistochemistry demonstrated that the tumor cells were positive for MDM2 and CDK4 expression. MDM2 amplification was detected via FISH, leading to the final diagnosis of DDLPS. Following surgery, the patient was treated in the intensive care unit due to peritonitis, and died 60 d after surgery.
CONCLUSION To the best of the authors’ knowledge, this is the first case of primary duodenal DDLPS in Korea and the third case in the English-language literature. Care must be taken not to misdiagnose DDLPS as another high-grade tumor. Liposarcoma should be in the differential diagnosis list.
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Affiliation(s)
- Nah Ihm Kim
- Department of Pathology, Chonnam National University Hospital, Gwangju 61469, South Korea
| | - Ji Shin Lee
- Department of Pathology, Chonnam National University Hwasun Hospital, Hwasun 58128, South Korea
| | - Chan Choi
- Department of Pathology, Chonnam National University Hwasun Hospital, Hwasun 58128, South Korea
| | - Jong Hee Nam
- Department of Pathology, Chonnam National University Hospital, Gwangju 61469, South Korea
| | - Yoo Duk Choi
- Department of Pathology, Chonnam National University Hospital, Gwangju 61469, South Korea
| | - Hee Joon Kim
- Department of Surgery, Chonnam National University Hospital, Gwangju 61469, South Korea
| | - Sung Sun Kim
- Department of Pathology, Chonnam National University Hospital, Gwangju 61469, South Korea
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Chun M, Jin H, Lee S, Kwon O, Choi C, Kim J, Park J. Use of Tin Filters in Cone Beam CT of Head Region for Streak Artifact Reduction: Phantom Study. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.1447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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15
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Choun H, An H, Jin H, Kim J, Choi C, Park J. Performance Evaluation of Visual Guidance Patient-Controlled Respiratory Gating System for Respiratory-Gated Magnetic-Resonance Image-Guided Radiation Therapy. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.1470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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16
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McGoldrick M, Barbur I, Etchill E, Giuliano K, Hsu S, Sharma K, Kilic A, Choi C. Impact of Pre-Transplant ECMO Duration on Heart Transplant Survival. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.1946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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17
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Park J, Eisenbarth D, Choi W, Kim H, Choi C, Lee D, Lim DS. YAP and AP-1 Cooperate to Initiate Pancreatic Cancer Development from Ductal Cells in Mice. Cancer Res 2020; 80:4768-4779. [PMID: 32900774 DOI: 10.1158/0008-5472.can-20-0907] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 07/22/2020] [Accepted: 08/27/2020] [Indexed: 11/16/2022]
Abstract
The development of pancreatic cancer is heavily dependent upon the aberrant activation of KRAS signaling. Among the downstream targets of KRAS, the effectors of the Hippo pathway YAP and TAZ (YAP/TAZ) are crucial during cancer initiation and progression. However, little is known about the cell type-specific effects of YAP/TAZ on the development of pancreatic cancer. Here we clarify the unique consequences of YAP/TAZ activation in the ductal cell population of the pancreas by generating mice with pancreatic duct cell-specific, inducible knockouts of Lats1 and Lats2, the main kinases upstream of YAP/TAZ. Oncogenic activation of YAP by deletion of Lats1/2 in ductal cells led to the rapid transformation of the pancreas, which was accompanied by a robust increase in the expression of YAP and AP-1 target genes. Pharmacologic inhibition of AP-1 activity induced death in Lats1/2 knockout organoids and attenuated YAP-dependent transformation of the pancreas in vivo. Both YAP and AP-1 were activated during the development of KRAS-dependent cancer in mice and human patients with pancreatic ductal adenocarcinoma, suggesting that this signaling hub represents an important mediator of pancreatic cancer development and progression. Collectively, these data define a YAP-dependent mechanism of pancreatic cancer cell development and suggest that inhibition of AP-1 can suppress this development. SIGNIFICANCE: A pancreatic ductal cell-specific knockout mouse model featuring constitutively active YAP allows for the study of YAP-dependent transformation of the pancreas and for screening pharmacologically active inhibitors.
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Affiliation(s)
- Jaeoh Park
- Department of Biological Sciences, National Creative Research Initiatives Center, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
| | - David Eisenbarth
- Department of Biological Sciences, National Creative Research Initiatives Center, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
| | - Wonyoung Choi
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
| | - Hail Kim
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
| | - Chan Choi
- Department of Pathology, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Jeonnam, Republic of Korea
| | - Dahye Lee
- Department of Biological Sciences, National Creative Research Initiatives Center, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
| | - Dae-Sik Lim
- Department of Biological Sciences, National Creative Research Initiatives Center, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea.
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Kim CH, Yeom YS, Petoussi-Henss N, Zankl M, Bolch WE, Lee C, Choi C, Nguyen TT, Eckerman K, Kim HS, Han MC, Qiu R, Chung BS, Han H, Shin B. ICRP Publication 145: Adult Mesh-Type Reference Computational Phantoms. Ann ICRP 2020; 49:13-201. [PMID: 33231095 DOI: 10.1177/0146645319893605] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
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19
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Yu SH, Hur YH, Hwang EC, Kim MS, Chung HS, Lee BC, Heo SH, Choi C, Hwang JE, Bae WK, Jung SI, Kwon DD. Does multidetector computed tomographic urography (MDCTU) T staging classification correspond with pathologic T staging in upper tract urothelial carcinoma? Int Urol Nephrol 2020; 53:69-75. [PMID: 32857341 DOI: 10.1007/s11255-020-02622-8] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Accepted: 08/23/2020] [Indexed: 01/04/2023]
Abstract
PURPOSE Multidetector computed tomographic urography (MDCTU) is not yet sufficient to be used in the clinical staging of upper tract urothelial carcinoma (UTUC). This study aimed to compare the diagnostic accuracy of MDCTU T stage classification and pathologic T staging for UTUC. METHODS We retrospectively evaluated 125 patients with UTUC who underwent preoperative MDCTU. A single radiologist classified the MDCTU pattern of the tumors as either low or advanced T stage for localized or locally advanced tumors, respectively. The diagnostic values of MDCTU for locally advanced tumors and the kappa agreement between MDCTU and pathologic T stage were investigated. RESULTS Among 85 pathologic low T stage (Ta-T2) tumors, 71 low T stage tumors were correctly detected by MDCTU, while 30 out of 40 advanced T stage (T3-T4) tumors were correctly diagnosed by MDCTU. MDCTU led to under-staging in 8% (10/125) tumors and over-staging in 11.2% (14/125) tumors. Therefore, the overall accuracy of MDCTU in the diagnosis of low and advanced T stage tumors was 80.8% (101/125 patients). The sensitivity for advanced T stage tumors was 75% (30/40), the specificity was 83.5% (71/85), and the positive and negative predictive values were 68.1% (30/44) and 87.6% (71/81), respectively. The kappa agreement value between the MDCTU T stage and pathologic T stage was 0.57 (95% confidence interval (CI) 0.42-0.72), which was statistically significant (P = 0.001). CONCLUSION MDCTU T stage classification may be relatively accurate for the detection and staging of UTUC correspondence with a pathologic stage.
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Affiliation(s)
- Seong Hyeon Yu
- Department of Urology, Chonnam National University Medical School, Seoyang-ro, Hwasun-eup, Hwasun-gun, 26458128, Jeollanam-do, Korea
| | - Young Hoe Hur
- Department of Hepato-Pancreato-Biliary Surgery, Chonnam National University Medical School, Gwangju, Korea
| | - Eu Chang Hwang
- Department of Urology, Chonnam National University Medical School, Seoyang-ro, Hwasun-eup, Hwasun-gun, 26458128, Jeollanam-do, Korea.
| | - Myung Soo Kim
- Department of Urology, Chonnam National University Medical School, Seoyang-ro, Hwasun-eup, Hwasun-gun, 26458128, Jeollanam-do, Korea
| | - Ho Seok Chung
- Department of Urology, Chonnam National University Medical School, Seoyang-ro, Hwasun-eup, Hwasun-gun, 26458128, Jeollanam-do, Korea
| | - Byung Chan Lee
- Department of Radiology, Chonnam National University Medical School, Seoyang-ro, Hwasun-eup, Hwasun-gun, 26458128, Jeollanam-do, Korea
| | - Suk Hee Heo
- Department of Radiology, Chonnam National University Medical School, Seoyang-ro, Hwasun-eup, Hwasun-gun, 26458128, Jeollanam-do, Korea.
| | - Chan Choi
- Department of Pathology, Chonnam National University Medical School, Gwangju, Korea
| | - Jun Eul Hwang
- Department of Hemato-Oncology, Chonnam National University Medical School, Gwangju, Korea
| | - Woo Kyun Bae
- Department of Hemato-Oncology, Chonnam National University Medical School, Gwangju, Korea
| | - Seung Il Jung
- Department of Urology, Chonnam National University Medical School, Seoyang-ro, Hwasun-eup, Hwasun-gun, 26458128, Jeollanam-do, Korea
| | - Dong Deuk Kwon
- Department of Urology, Chonnam National University Medical School, Seoyang-ro, Hwasun-eup, Hwasun-gun, 26458128, Jeollanam-do, Korea
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20
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Kim HSJ, Wahid M, Choi C, Das P, Jung S, Khosa F. Bibliometric analysis of manuscript characteristics that influence citations: A comparison of ten major dermatology journals. Burns 2020; 46:1686-1692. [PMID: 32536449 DOI: 10.1016/j.burns.2020.05.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 03/31/2020] [Accepted: 05/01/2020] [Indexed: 01/02/2023]
Abstract
BACKGROUND The number of citations an article receives is a reassuring marker for its influence in the academic world. OBJECTIVE We aimed to discover characteristics of dermatology articles that may impact their citation. METHODS This cross-sectional study collected and analyzed articles published between January and June 2013 from ten highest impact dermatology journals. The study included manuscript characteristics i.e. the length of an article, the presence of visual aids, accessibility, originality, and clarity. Citation analysis statistics required multiple tools such as linear regression, point-biserial correlation, Spearman's rank-order correlation, and Kruskal-Wallis to determine the association between these study variables and the number of citations of articles. RESULTS Of 748 articles included in our study, the number of citations ranged from 0 to 814 (median: 18), with weak positive correlations to the length of manuscript (word count: rs 0.3, p<0.001; pages: rs 0.3, p<0.001). Having a structured abstract (rpb -0.15, p<0.001) and increasing number of references (rs -0.26, p<0.001) showed a negative correlation. Studies originating in North America were associated with higher citations, followed by Europe and Asia (p<0.001). Review articles had a higher number of citations (p<0.001). CONCLUSIONS We found that the number of words and the number of pages within a dermatology manuscript had the strongest positive correlation for a higher citation count. The results of this study can benefit authors who may improve the citation of their articles by utilizing this bibliometric study when assembling their manuscript.
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Affiliation(s)
- H S J Kim
- Faculty of Medicine, University of British Columbia, Canada
| | - M Wahid
- Faculty of Medicine, University of British Columbia, Canada
| | - C Choi
- Faculty of Medicine, University of British Columbia, Canada
| | - P Das
- Education & Proficiency Center, King Hamad University Hospital, Bahrain
| | - S Jung
- Faculty of Medicine, University of British Columbia, Canada
| | - F Khosa
- Vancouver General Hospital, University of British Columbia, Canada.
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Choi YD, Jung JY, Baek M, Khan S, Song PI, Ryu S, Koo JY, Chauhan SC, Tsin A, Choi C, Kim WJ, Kim M. APE1 Promotes Pancreatic Cancer Proliferation through GFRα1/Src/ERK Axis-Cascade Signaling in Response to GDNF. Int J Mol Sci 2020; 21:E3586. [PMID: 32438692 PMCID: PMC7279477 DOI: 10.3390/ijms21103586] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 05/15/2020] [Accepted: 05/17/2020] [Indexed: 12/21/2022] Open
Abstract
Pancreatic cancer is the worst exocrine gastrointestinal cancer leading to the highest mortality. Recent studies reported that aberrant expression of apurinic/apyrimidinic endodeoxyribonuclease 1 (APE1) is involved in uncontrolled cell growth. However, the molecular mechanism of APE1 biological role remains unrevealed in pancreatic cancer progression. Here, we demonstrate that APE1 accelerates pancreatic cancer cell proliferation through glial cell line-derived neurotrophic factor (GDNF)/glial factor receptor α1 (GFRα1)/Src/ERK axis-cascade signaling. The proliferation of endogenous APE1 expressed-MIA PaCa-2, a human pancreatic carcinoma cell line, was increased by treatment with GDNF, a ligand of GFRα1. Either of downregulated APE1 or GFRα1 expression using small interference RNA (siRNA) inhibited GDNF-induced cancer cell proliferation. The MEK-1 inhibitor PD98059 decreased GDNF-induced MIA PaCa-2 cell proliferation. Src inactivation by either its siRNA or Src inhibitor decreased ERK-phosphorylation in response to GDNF in MIA PaCa-2 cells. Overexpression of GFRα1 in APE1-deficient MIA PaCa-2 cells activated the phosphorylation of Src and ERK. The expression of both APE1 and GFRα1 was gradually increased as progressing pancreatic cancer grades. Our results highlight a critical role for APE1 in GDNF-induced pancreatic cancer cell proliferation through APE1/GFRα1/Src/ERK axis-cascade signaling and provide evidence for future potential therapeutic drug targets for the treatment of pancreatic cancer.
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Affiliation(s)
- Yoo-Duk Choi
- Department of Pathology, Chonnam National University Medical School, Gwangju 61186, Korea; (Y.-D.C.); (J.-Y.K.)
| | - Ji-Yeon Jung
- Dental Science Research Institute, Medical Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju 61186, Korea;
| | - Minwoo Baek
- Department of Pharmacy Practice and Pharmaceutical Sciences, College of Pharmacy, University of Minnesota, Duluth, MN 55812, USA;
| | - Sheema Khan
- Department of Immunology & Microbiology, School of Medicine, University of Texas Rio Grande Valley, McAllen, TX 78504, USA; (S.K.); (S.C.C.)
| | - Peter I. Song
- Department of Molecular Science, School of Medicine, University of Texas Rio Grande Valley, McAllen, TX 78504, USA; (P.I.S.); (A.T.)
| | - Sunhyo Ryu
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Boston University Medical Campus, Boston, MA 02118, USA;
| | - Joo-Yeon Koo
- Department of Pathology, Chonnam National University Medical School, Gwangju 61186, Korea; (Y.-D.C.); (J.-Y.K.)
| | - Subhash C. Chauhan
- Department of Immunology & Microbiology, School of Medicine, University of Texas Rio Grande Valley, McAllen, TX 78504, USA; (S.K.); (S.C.C.)
| | - Andrew Tsin
- Department of Molecular Science, School of Medicine, University of Texas Rio Grande Valley, McAllen, TX 78504, USA; (P.I.S.); (A.T.)
| | - Chan Choi
- Department of Pathology, Chonnam National University Hwasun Hospital, Hwasun 58128, Korea;
| | - Won Jae Kim
- Dental Science Research Institute, Medical Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju 61186, Korea;
| | - Mihwa Kim
- Department of Pathology, Chonnam National University Medical School, Gwangju 61186, Korea; (Y.-D.C.); (J.-Y.K.)
- Dental Science Research Institute, Medical Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju 61186, Korea;
- Department of Molecular Science, School of Medicine, University of Texas Rio Grande Valley, McAllen, TX 78504, USA; (P.I.S.); (A.T.)
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Freed K, Cuomo K, Hubbard A, Riley S, Menzel K, Sharma K, Florido R, Hsu S, Kilic A, Choi C, Aslam M, Umapathi P, Fioretti R, Klemans N, Gilotra N. Management of Heart Failure in Left Ventricular Assist Device (LVAD) Patients Utilizing an Outpatient Diuresis Clinic. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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23
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Evans T, Poppe K, Choi C, Devlin G, Lund M, Troughton R, Richards A, Doughty R. A051 Long-term Outcomes for Patients with Heart Failure in New Zealand according to Ejection Fraction Phenotype. Heart Lung Circ 2020. [DOI: 10.1016/j.hlc.2020.05.056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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24
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Doughty R, Poppe K, Rolleston A, Aish S, Choi C, Earle N, Kerr A, Devlin G, Nunn C, Troughton R, Porter G, Gladding P, Cameron V, Legget M. A028 The Multi-Ethnic New Zealand Study of Acute Coronary Syndromes (MENZACS): Baseline Characteristics of Patients With First-time ACS. Heart Lung Circ 2020. [DOI: 10.1016/j.hlc.2020.05.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Shin S, Choi C, Kim SY, Park H. Proton-sensitizing effect of small molecule inhibitor of P300 histone acetyltransferase C646 in human pancreatic cancer cells. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz238.074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Lee J, Choi C, Ji W, Kim S. P2.01-46 The Efficacy and Safety of 2nd-Line Nivolumab for Non-Small Cell Lung Cancer in Real-World Practice with Emphasis on Hyperprogession. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1389] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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27
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Kim M, Hwang H, Choi C, Lee J. P2.14-37 Anaplastic Lymphoma Kinase Inhibitor Induced Pneumonitis in Patients with NSCLC: Clinical and Radiologic Characteristics and Risk Factors. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Lee J, Lee R, Ju H, Kim G, Bae J, Choi C. 090 Narrow-band ultraviolet B phototherapy does not increase the risk of skin cancer in patients with vitiligo: A nationwide population-based retrospective cohort study. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Choi C, Kang D, Kim H, Park S, Kim S, Nam H. Clinical outcomes of rectal neuroendocrine tumors less than 20 mm: a single institutional analysis of 371 patients. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz156.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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30
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Choi C, Kim S, Kang D, Park S, Nam H. Can an undifferentiated type early gastric cancer be a candidate for endoscopic resection? Ann Oncol 2019. [DOI: 10.1093/annonc/mdz155.066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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31
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Yoon JH, Moon SK, Choi C, Ryu BY, Lee SY. Detection of viable but nonculturable Vibrio parahaemolyticus induced by prolonged cold-starvation using propidium monoazide real-time polymerase chain reaction. Lett Appl Microbiol 2019; 68:537-545. [PMID: 30933376 DOI: 10.1111/lam.13157] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 02/15/2019] [Accepted: 02/15/2019] [Indexed: 11/26/2022]
Abstract
Viable but nonculturable (VBNC) Vibrio parahaemolyticus cannot be detected by the standard cultivation-based methods. In this study, commonly used viability assessment methods were evaluated for the detection of V. parahaemolyticus in a VBNC state. Vibrio parahaemolyticus cells exposed to nutrient deficiency at cold temperature were used for epifluorescence microscopy with SYTO9 and propidium iodide (PI) staining and real-time polymerase chain reaction (qPCR) with propidium monoazide (PMA), and its resuscitative ability was determined by a temperature upshift in freshly prepared artificial sea water (ASW; pH 7) fluids. Viable cells with intact membranes always exceeded 5·0 log CFU per ml in ASW microcosms at 4°C. After 80 days, cycle thresholds for V. parahaemolyticus ATCC 27969 were 16·15-16·69. During cold-starvation, PMA qPCR selectively excluded DNAs from heat-killed cells. However, there may be some penetration of PMA into undamaged cells that persisted in ASW for 150 days, as evidenced by their ability to resuscitate from a VBNC state after a temperature upshift (25°C); V. parahaemolyticus ATCC 33844 and V. parahaemolyticus ATCC 27969 were successfully reactivated from a VBNC state in ASW microcosms containing <5% NaCl, following enrichment in ASW medium (pH 7). SIGNIFICANCE AND IMPACT OF THE STUDY: Few studies have evaluated the characteristics of and detection methods for viable but nonculturable (VBNC) Vibrio parahaemolyticus induced by cold-starvation. Currently, VBNC cells are routinely detected by SYTO9 and propidium iodide double staining. However, viable cell counts might be overestimated by this approach, suggesting that the fluorescence dyes may be ineffective for accurately determining the viability of bacterial cells. We demonstrated that quantitative real-time polymerase chain reaction with propidium monoazide, which selectively permeates damaged cell membranes, can be used to obtain viable cell counts of V. parahaemolyticus after its evolution to a VBNC state under cold-starvation conditions.
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Affiliation(s)
- J-H Yoon
- Department of Food and Nutrition, Chung-Ang University, Anseong-si, Gyeonggi-do, Korea
| | - S-K Moon
- Department of Food and Nutrition, Chung-Ang University, Anseong-si, Gyeonggi-do, Korea
| | - C Choi
- Department of Food and Nutrition, Chung-Ang University, Anseong-si, Gyeonggi-do, Korea
| | - B-Y Ryu
- Department of Animal Science and Technology, Chung-Ang University, Anseong-si, Gyeonggi-do, Korea
| | - S-Y Lee
- Department of Food and Nutrition, Chung-Ang University, Anseong-si, Gyeonggi-do, Korea
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Kim K, Choi C. EP-1635 Stereotactic ablative radiation therapy for non-spine bone metastases. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)32055-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Choi C, Sasso G, Pontre B. EP-2070 Comparison of multi-atlas based synthetic CT generation methods for radiotherapy for prostate cancer. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)32490-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Shaw M, Pawlak N, Choi C, Khan N, Datta A, Bikson M. Transcranial Direct Current Stimulation (tDCS) Induces Acute Changes in Brain Metabolism. Brain Stimul 2019. [DOI: 10.1016/j.brs.2018.12.703] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Chung HS, Hwang EC, Kim MS, Yu SH, Jung SI, Kang TW, Choi C, Choi SH, Kwon TG, Noh JH, Kim MK, Cho WJ, Kang SG, Kang SH, Cheon J, Seo IY, Chung H, Kim HS, Lee CH, Ku JY, Ha HK, Kim BH, Jeong CW, Ku JH, Kwak C, Kwon D. Effects of Variant Histology on the Oncologic Outcomes of Patients With Upper Urinary Tract Carcinoma After Radical Nephroureterectomy: A Propensity Score-Matched Analysis. Clin Genitourin Cancer 2019; 17:e394-e407. [PMID: 30782419 DOI: 10.1016/j.clgc.2018.11.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 11/15/2018] [Accepted: 11/25/2018] [Indexed: 12/12/2022]
Abstract
PURPOSE To determine the prognostic effect of upper tract urothelial carcinoma (UTUC) with variant histology (VH) after radical nephroureterectomy (RNU). PATIENTS AND METHODS The data of 1173 patients who received RNU for UTUC without neoadjuvant chemotherapy in 11 institutions between 2002 and 2016 were retrospectively reviewed. A matched propensity score analysis was performed. Clinicopathologic variables, recurrence-free survival (RFS), cancer-specific survival (CSS), and overall survival (OS) were compared between patients with pure UTUC and patients with UTUC and VH. Univariate and multivariate Cox proportional regression models were used to determine the independent variables associated with oncologic outcomes. RESULTS UTUC with VH was observed in 93 patients (7.9%). After propensity score matching, UTUC with VH showed no difference in clinicopathologic features compared to pure UTUC; however, it was associated with shorter RFS, CSS, and OS (log rank, P = .011, P = .002, P = .006, respectively). Additionally, the multivariate analysis revealed that VH was independently associated with a poor RFS [hazard ratio (HR) = 1.92; 95% confidence interval (CI), 1.27-2.89; P = .002], CSS (HR = 4.47; 95% CI, 1.99-10.1; P = .001), and OS (HR = 3.00; 95% CI, 1.55-5.78; P = .001). However, the Kaplan-Meier method revealed that differences in RFS, CSS, and OS were not significant in patients who received adjuvant chemotherapy (log rank, P = .562, P = .060, P = .153, respectively). CONCLUSION UTUC with VH was independently associated with poor oncologic outcomes in patients with UTUC after RNU. Although patients with UTUC and VH had a poor prognosis compared to patients with pure UTUC, adjuvant chemotherapy would be helpful in improving the survival rates of these patients.
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Affiliation(s)
- Ho Seok Chung
- Department of Urology, Chonnam National University Medical School, Gwangju, Korea
| | - Eu Chang Hwang
- Department of Urology, Chonnam National University Medical School, Gwangju, Korea
| | - Myung Soo Kim
- Department of Urology, Chonnam National University Medical School, Gwangju, Korea
| | - Seong Hyeon Yu
- Department of Urology, Chonnam National University Medical School, Gwangju, Korea
| | - Seung Il Jung
- Department of Urology, Chonnam National University Medical School, Gwangju, Korea
| | - Taek Won Kang
- Department of Urology, Chonnam National University Medical School, Gwangju, Korea
| | - Chan Choi
- Department of Pathology, Chonnam National University Medical School, Gwangju, Korea
| | - Seock Hwan Choi
- Department of Urology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Tae Gyun Kwon
- Department of Urology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Joon Hwa Noh
- Department of Urology, Kwangju Christian Hospital, Gwangju, Korea
| | - Myung Ki Kim
- Department of Urology, Chonbuk National University Medical School, Jeonju, Korea
| | - Won Jin Cho
- Department of Urology, Chosun University School of Medicine, Gwangju, Korea
| | - Sung Gu Kang
- Department of Urology, Korea University College of Medicine, Seoul, Korea
| | - Seok Ho Kang
- Department of Urology, Korea University College of Medicine, Seoul, Korea
| | - Jun Cheon
- Department of Urology, Korea University College of Medicine, Seoul, Korea
| | - Ill Young Seo
- Department of Urology, Institute of Wonkwang Medical Science, Wonkwang University School of Medicine, Iksan, Korea
| | - Hong Chung
- Department of Urology, Konkuk University School of Medicine, Chungju, Korea
| | - Hong Sup Kim
- Department of Urology, Konkuk University School of Medicine, Chungju, Korea
| | - Chan Ho Lee
- Department of Urology, Inje University School of Medicine, Busan, Korea
| | - Ja Yoon Ku
- Department of Urology, Pusan National University School of Medicine, Busan, Korea
| | - Hong Koo Ha
- Department of Urology, Pusan National University School of Medicine, Busan, Korea
| | - Byung Hoon Kim
- Department of Urology, Keimyung University School of Medicine, Daegu, Korea
| | - Chang Wook Jeong
- Department of Urology, Seoul National University College of Medicine, Seoul, Korea
| | - Ja Hyeon Ku
- Department of Urology, Seoul National University College of Medicine, Seoul, Korea
| | - Cheol Kwak
- Department of Urology, Seoul National University College of Medicine, Seoul, Korea
| | - Dongdeuk Kwon
- Department of Urology, Chonnam National University Medical School, Gwangju, Korea.
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Choi W, Namkung J, Hwang I, Kim H, Lim A, Park HJ, Lee HW, Han KH, Park S, Jeong JS, Bang G, Kim YH, Yadav VK, Karsenty G, Ju YS, Choi C, Suh JM, Park JY, Park S, Kim H. Publisher Correction: Serotonin signals through a gut-liver axis to regulate hepatic steatosis. Nat Commun 2019; 10:158. [PMID: 30622275 PMCID: PMC6325240 DOI: 10.1038/s41467-018-08085-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Affiliation(s)
- Wonsuk Choi
- Graduate School of Medical Science and Engineering, KAIST, Daejeon, 34141, Republic of Korea
| | - Jun Namkung
- Graduate School of Medical Science and Engineering, KAIST, Daejeon, 34141, Republic of Korea.,Department of Biochemistry, Yonsei University Wonju College of Medicine, Wonju, 26426, Republic of Korea
| | - Inseon Hwang
- Biomedical Science and Engineering Interdisciplinary Program, KAIST, Daejeon, 34141, Republic of Korea
| | - Hyeongseok Kim
- Graduate School of Medical Science and Engineering, KAIST, Daejeon, 34141, Republic of Korea
| | - Ajin Lim
- Graduate School of Medical Science and Engineering, KAIST, Daejeon, 34141, Republic of Korea
| | - Hye Jung Park
- Department of Internal Medicine, Yonsei University College of Medicine, Yonsei Liver Center, Severance Hospital, Seoul, 03722, Republic of Korea
| | - Hye Won Lee
- Department of Internal Medicine, Yonsei University College of Medicine, Yonsei Liver Center, Severance Hospital, Seoul, 03722, Republic of Korea
| | - Kwang-Hyub Han
- Department of Internal Medicine, Yonsei University College of Medicine, Yonsei Liver Center, Severance Hospital, Seoul, 03722, Republic of Korea
| | - Seongyeol Park
- Graduate School of Medical Science and Engineering, KAIST, Daejeon, 34141, Republic of Korea
| | - Ji-Seon Jeong
- Center for Bioanalysis, Division of Metrology for Quality of Life, Korea Research Institute of Standards and Science, Daejeon, 34113, Republic of Korea
| | - Geul Bang
- Biomedical Omics Group, Korea Basic Science Institute, Chungbuk, 28119, Republic of Korea
| | - Young Hwan Kim
- Biomedical Omics Group, Korea Basic Science Institute, Chungbuk, 28119, Republic of Korea
| | - Vijay K Yadav
- Department of Genetics and Development, Columbia University Medical Center, New York, NY, 10032, USA
| | - Gerard Karsenty
- Department of Genetics and Development, Columbia University Medical Center, New York, NY, 10032, USA
| | - Young Seok Ju
- Graduate School of Medical Science and Engineering, KAIST, Daejeon, 34141, Republic of Korea
| | - Chan Choi
- Department of Pathology, Chonnam National University Medical School, Gwangju, 61469, Republic of Korea
| | - Jae Myoung Suh
- Graduate School of Medical Science and Engineering, KAIST, Daejeon, 34141, Republic of Korea.,Biomedical Science and Engineering Interdisciplinary Program, KAIST, Daejeon, 34141, Republic of Korea
| | - Jun Yong Park
- Department of Internal Medicine, Yonsei University College of Medicine, Yonsei Liver Center, Severance Hospital, Seoul, 03722, Republic of Korea.
| | - Sangkyu Park
- Graduate School of Medical Science and Engineering, KAIST, Daejeon, 34141, Republic of Korea. .,Department of Biochemistry, College of Medicine, Catholic Kwandong University, Gangneung, 25601, Republic of Korea.
| | - Hail Kim
- Graduate School of Medical Science and Engineering, KAIST, Daejeon, 34141, Republic of Korea. .,Biomedical Science and Engineering Interdisciplinary Program, KAIST, Daejeon, 34141, Republic of Korea. .,KAIST Institute for the BioCentury, KAIST, Daejeon, 34141, Republic of Korea.
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Choi W, Namkung J, Hwang I, Kim H, Lim A, Park HJ, Lee HW, Han KH, Park S, Jeong JS, Bang G, Kim YH, Yadav VK, Karsenty G, Ju YS, Choi C, Suh JM, Park JY, Park S, Kim H. Serotonin signals through a gut-liver axis to regulate hepatic steatosis. Nat Commun 2018; 9:4824. [PMID: 30446669 PMCID: PMC6240035 DOI: 10.1038/s41467-018-07287-7] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 10/19/2018] [Indexed: 12/13/2022] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) is increasing in worldwide prevalence, closely tracking the obesity epidemic, but specific pharmaceutical treatments for NAFLD are lacking. Defining the key molecular pathways underlying the pathogenesis of NAFLD is essential for developing new drugs. Here we demonstrate that inhibition of gut-derived serotonin synthesis ameliorates hepatic steatosis through a reduction in liver serotonin receptor 2A (HTR2A) signaling. Local serotonin concentrations in the portal blood, which can directly travel to and affect the liver, are selectively increased by high-fat diet (HFD) feeding in mice. Both gut-specific Tph1 knockout mice and liver-specific Htr2a knockout mice are resistant to HFD-induced hepatic steatosis, without affecting systemic energy homeostasis. Moreover, selective HTR2A antagonist treatment prevents HFD-induced hepatic steatosis. Thus, the gut TPH1-liver HTR2A axis shows promise as a drug target to ameliorate NAFLD with minimal systemic metabolic effects. No effective pharmacological treatments exist for nonalcoholic fatty liver disease (NAFLD). Here, the authors show that serotonin concentration in the portal blood is increased in nine human subjects and in mice fed a high-fat diet, and that local serotonin signaling ablation, either genetically or with an antagonist, prevents hepatic steatosis in mice.
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Affiliation(s)
- Wonsuk Choi
- Graduate School of Medical Science and Engineering, KAIST, Daejeon, 34141, Republic of Korea
| | - Jun Namkung
- Graduate School of Medical Science and Engineering, KAIST, Daejeon, 34141, Republic of Korea.,Department of Biochemistry, Yonsei University Wonju College of Medicine, Wonju, 26426, Republic of Korea
| | - Inseon Hwang
- Biomedical Science and Engineering Interdisciplinary Program, KAIST, Daejeon, 34141, Republic of Korea
| | - Hyeongseok Kim
- Graduate School of Medical Science and Engineering, KAIST, Daejeon, 34141, Republic of Korea
| | - Ajin Lim
- Graduate School of Medical Science and Engineering, KAIST, Daejeon, 34141, Republic of Korea
| | - Hye Jung Park
- Department of Internal Medicine, Yonsei University College of Medicine, Yonsei Liver Center, Severance Hospital, Seoul, 03722, Republic of Korea
| | - Hye Won Lee
- Department of Internal Medicine, Yonsei University College of Medicine, Yonsei Liver Center, Severance Hospital, Seoul, 03722, Republic of Korea
| | - Kwang-Hyub Han
- Department of Internal Medicine, Yonsei University College of Medicine, Yonsei Liver Center, Severance Hospital, Seoul, 03722, Republic of Korea
| | - Seongyeol Park
- Graduate School of Medical Science and Engineering, KAIST, Daejeon, 34141, Republic of Korea
| | - Ji-Seon Jeong
- Center for Bioanalysis, Division of Metrology for Quality of Life, Korea Research Institute of Standards and Science, Daejeon, 34113, Republic of Korea
| | - Geul Bang
- Biomedical Omics Group, Korea Basic Science Institute, Chungbuk, 28119, Republic of Korea
| | - Young Hwan Kim
- Biomedical Omics Group, Korea Basic Science Institute, Chungbuk, 28119, Republic of Korea
| | - Vijay K Yadav
- Department of Genetics and Development, Columbia University Medical Center, New York, NY, 10032, USA
| | - Gerard Karsenty
- Department of Genetics and Development, Columbia University Medical Center, New York, NY, 10032, USA
| | - Young Seok Ju
- Graduate School of Medical Science and Engineering, KAIST, Daejeon, 34141, Republic of Korea
| | - Chan Choi
- Department of Pathology, Chonnam National University Medical School, Gwangju, 61469, Republic of Korea
| | - Jae Myoung Suh
- Graduate School of Medical Science and Engineering, KAIST, Daejeon, 34141, Republic of Korea.,Biomedical Science and Engineering Interdisciplinary Program, KAIST, Daejeon, 34141, Republic of Korea
| | - Jun Yong Park
- Department of Internal Medicine, Yonsei University College of Medicine, Yonsei Liver Center, Severance Hospital, Seoul, 03722, Republic of Korea.
| | - Sangkyu Park
- Graduate School of Medical Science and Engineering, KAIST, Daejeon, 34141, Republic of Korea. .,Department of Biochemistry, College of Medicine, Catholic Kwandong University, Gangneung, 25601, Republic of Korea.
| | - Hail Kim
- Graduate School of Medical Science and Engineering, KAIST, Daejeon, 34141, Republic of Korea. .,Biomedical Science and Engineering Interdisciplinary Program, KAIST, Daejeon, 34141, Republic of Korea. .,KAIST Institute for the BioCentury, KAIST, Daejeon, 34141, Republic of Korea.
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Kim J, Paik E, Kim T, Lee J, Bae D, Choi C. Long-Term Outcomes of Single-Port Laparoscopic Myomectomy Using a Modified Suture Technique. J Minim Invasive Gynecol 2018. [DOI: 10.1016/j.jmig.2018.09.697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Paik E, Kim T, Lee J, Kim B, Bae D, Choi C. Robotic Radical Trachelectomy for Early Stage Cervical Cancer: Case Series of Single Institution. J Minim Invasive Gynecol 2018. [DOI: 10.1016/j.jmig.2018.09.075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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40
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Paik E, Choi C, Lee J, Kim B, Bae D, Kim T. Comparison of Laparoscopy and Laparotomy for Paraaortic Lymphadenectomy in Women With High-Risk Endometrial Cancer. J Minim Invasive Gynecol 2018. [DOI: 10.1016/j.jmig.2018.09.134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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41
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Kim M, Jeong S, Kim J, Paik E, Choi C, Lee J, Kim B, Bae D, Kim T. Comparison Laparoendoscopic Single-Site (LESS) and Conventional Laparoscopic Surgery in Mature Cystic Teratoma of Ovary. J Minim Invasive Gynecol 2018. [DOI: 10.1016/j.jmig.2018.09.387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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42
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Kim CH, Yeom YS, Nguyen TT, Han MC, Choi C, Lee H, Han H, Shin B, Lee JK, Kim HS, Zankl M, Petoussi-Henss N, Bolch WE, Lee C, Chung BS, Qiu R, Eckerman K. New mesh-type phantoms and their dosimetric applications, including emergencies. Ann ICRP 2018; 47:45-62. [PMID: 29651869 DOI: 10.1177/0146645318756231] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [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: 06/08/2023]
Abstract
Committee 2 of the International Commission on Radiological Protection (ICRP) has constructed mesh-type adult reference computational phantoms by converting the voxel-type ICRP Publication 110 adult reference computational phantoms to a high-quality mesh format, and adding those tissues that were below the image resolution of the voxel phantoms and therefore not included in the Publication 110 phantoms. The new mesh phantoms include all the necessary source and target tissues for effective dose calculations, including the 8-40-µm-thick target layers of the alimentary and respiratory tract organs, thereby obviating the need for supplemental organ-specific stylised models (e.g. respiratory airways, alimentary tract organ walls and stem cell layers, lens of the eye, and skin basal layer). To see the impact of the new mesh-type reference phantoms, dose coefficients for some selected external and internal exposures were calculated and compared with the current reference values in ICRP Publications 116 and 133, which were calculated by employing the Publication 110 phantoms and the supplemental stylised models. The new mesh phantoms were also used to calculate dose coefficients for industrial radiography sources near the body, which can be used to estimate the organ doses of the worker who is accidentally exposed by an industrial radiography source; in these calculations, the mesh phantoms were deformed to reflect the size of the worker, and also to evaluate the effect of posture on dose coefficients.
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Affiliation(s)
- C H Kim
- a Department of Nuclear Engineering, Hanyang University, 04763, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - Y S Yeom
- a Department of Nuclear Engineering, Hanyang University, 04763, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - T T Nguyen
- a Department of Nuclear Engineering, Hanyang University, 04763, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - M C Han
- a Department of Nuclear Engineering, Hanyang University, 04763, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - C Choi
- a Department of Nuclear Engineering, Hanyang University, 04763, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - H Lee
- a Department of Nuclear Engineering, Hanyang University, 04763, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - H Han
- a Department of Nuclear Engineering, Hanyang University, 04763, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - B Shin
- a Department of Nuclear Engineering, Hanyang University, 04763, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - J-K Lee
- a Department of Nuclear Engineering, Hanyang University, 04763, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - H S Kim
- b Korea Institute of Radiological & Medical Sciences, Republic of Korea
| | - M Zankl
- c Helmholtz Zentrum München Deutsches Forschungszentrum für Gesundheit und Umwelt, Germany
| | - N Petoussi-Henss
- c Helmholtz Zentrum München Deutsches Forschungszentrum für Gesundheit und Umwelt, Germany
| | | | - C Lee
- e National Cancer Institute, USA
| | - B S Chung
- f Ajou University School of Medicine, Republic of Korea
| | - R Qiu
- g Tsinghua University, P.R. China
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Kim M, Kim C, Kim Y, Choi C, Kim J. P1.13-32 Comparison Between Immune-Mediated Pneumonitis and Pneumonia in Patients Treated with PD-1/PD-L1 Therapy. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Koi M, Okita Y, Tseng-Rogenski S, Munakata K, Choi C, Kim HR, Koeppe E, Stoffel E, Galanko JA, McCoy N, Keku T, Kitajima T, Nagasaka T, Toiyama Y, Carethers JM. Abstract 4610: Inflammation-associated microsatellite alterations in colorectal cancers (CRCs): Definition, assay, prognostic value, and pathologic significance. Cancer Res 2018. [DOI: 10.1158/1538-7445.am2018-4610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background & Aims. Deficiency in the DNA mismatch repair (MMR) gene product MSH3 results in low levels of microsatellite instability (MSI-L) at dinucleotide loci and elevated microsatellite instability at selected tetranucleotide repeats (EMAST), but not at mononucleotide loci in CRC. We previously demonstrated that the pro-inflammatory cytokine interleukin 6 (IL6) and/or hydrogen peroxide triggers translocation of MSH3 from the nucleus to cytoplasm, resulting in MSI-L/EMAST (L/E). This is consistent with observed correlation between intraepithelial and nests of inflammatory cells within malignant epithelium that are the likely origin of IL6 and oxidative stress with the occurrence of L/E in CRCs, informing that L/E is a consequence of exposure to inflammation. Microbes such as Fusobacterium nucleatum may play a role in CRC initiation and progression, and may trigger inflammation. Clinically, L/E is associated with poor patient prognosis and CRC recurrence and/or metastasis. Threshold values for determining L/E range in the literature from 1 to 3 polymorphic markers frameshifted when compared to normal tissue. Our aim was to assess an optimal threshold value for determining L/E in CRCs.
Materials & Methods. For MSI-H, MSI-L and EMAST status, we developed a multiplex PCR-based assay consisting of 2 mono-, 5 di-, and 7 tetra-nucleotide microsatellite markers. MSI-H was defined when >2/7 mono- and/or di-nucleotide repeats exhibited frameshift mutations (FSM), and MSI-L when <2/7 mono- and/or di-nucleotide markers exhibited FSM. EMAST was defined when 1/7 (relaxed criteria) or >2/7 (stringent criteria) tetranucleotide markers showed FSM. Stage II/III CRCs (132 cases) from Korea were analyzed for the association between L/E and recurrence-free survival (RFS) using relaxed and stringent criteria for EMAST. A second CRC cohort (308 cases) was analyzed for MSI/EMAST and F. nucleatum infection.
Results. When EMAST was defined by relaxed criteria, P value for the association between L/E and RFS of 132 CRC patients was 0.415 while P value was 0.0038 when EMAST defined by stringent criteria was used. Similarly, F. nucleatum infection was associated with L/E by univariate analysis (P=0.027) but not by multivariate analysis (P=0.08) when EMAST was defined by relaxed criteria for 308 CRC cases. In contrast, this became significant in both uni- (P=0.014) and multi-variate analysis (P=0.024) when EMAST was defined by stringent criteria.
Conclusions. A clear distinction for pathological significance is detected between non-MSI-H, L/E CRCs (associated with inflammation) and non-L/E CRCs when EMAST is defined by <2/7 EMAST markers. This threshold may better define EMAST for these observed inflammation-associated microsatellite alterations.
Citation Format: Minoru Koi, Yoshiki Okita, Stephanie Tseng-Rogenski, Koji Munakata, Chan Choi, Hyeong-Rok Kim, Erika Koeppe, Elena Stoffel, Joseph A. Galanko, Nikki McCoy, Temitope Keku, Takahito Kitajima, Takeshi Nagasaka, Yuji Toiyama, John M. Carethers. Inflammation-associated microsatellite alterations in colorectal cancers (CRCs): Definition, assay, prognostic value, and pathologic significance [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2018; 2018 Apr 14-18; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2018;78(13 Suppl):Abstract nr 4610.
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Affiliation(s)
| | | | | | | | - Chan Choi
- 2Chonnam University, Chonnam, Republic of Korea
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Choi W, Kim J, Park J, Lee DH, Hwang D, Kim JH, Ashktorab H, Smoot D, Kim SY, Choi C, Koh GY, Lim DS. YAP/TAZ Initiates Gastric Tumorigenesis via Upregulation of MYC. Cancer Res 2018; 78:3306-3320. [PMID: 29669762 DOI: 10.1158/0008-5472.can-17-3487] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 02/07/2018] [Accepted: 04/12/2018] [Indexed: 11/16/2022]
Abstract
YAP and TAZ play oncogenic roles in various organs, but the role of YAP/TAZ in gastric cancer remains unclear. Here, we show that YAP/TAZ activation initiates gastric tumorigenesis in vivo and verify its significance in human gastric cancer. In mice, YAP/TAZ activation in the pyloric stem cell led to step-wise tumorigenesis. RNA sequencing identified MYC as a decisive target of YAP, which controls MYC at transcriptional and posttranscriptional levels. These mechanisms tightly regulated MYC in homeostatic conditions, but YAP activation altered this balance by impeding miRNA processing, causing a shift towards MYC upregulation. Pharmacologic inhibition of MYC suppressed YAP-dependent phenotypes in vitro and in vivo, verifying its functional role as a key mediator. Human gastric cancer samples also displayed a significant correlation between YAP and MYC. We reanalyzed human transcriptome data to verify enrichment of YAP signatures in a subpopulation of gastric cancers and found that our model closely reflected the molecular pattern of patients with high YAP activity. Overall, these results provide genetic evidence of YAP/TAZ as oncogenic initiators and drivers for gastric tumors with MYC as the key downstream mediator. These findings are also evident in human gastric cancer, emphasizing the significance of YAP/TAZ signaling in gastric carcinogenesis.Significance: YAP/TAZ activation initiates gastric carcinogenesis with MYC as the key downstream mediator. Cancer Res; 78(12); 3306-20. ©2018 AACR.
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Affiliation(s)
- Wonyoung Choi
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Jeongsik Kim
- National Creative Research Initiatives Center for Cell Division and Differentiation, Department of Biological Sciences, KAIST, Daejeon, Republic of Korea
| | - Jaeoh Park
- National Creative Research Initiatives Center for Cell Division and Differentiation, Department of Biological Sciences, KAIST, Daejeon, Republic of Korea
| | - Da-Hye Lee
- National Creative Research Initiatives Center for Cell Division and Differentiation, Department of Biological Sciences, KAIST, Daejeon, Republic of Korea
| | - Daehee Hwang
- National Creative Research Initiatives Center for Cell Division and Differentiation, Department of Biological Sciences, KAIST, Daejeon, Republic of Korea
| | - Jeong-Hwan Kim
- Medical Genomics Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - Hassan Ashktorab
- Department of Medicine and Cancer Research Center, Howard University College of Medicine, Washington DC
| | - Duane Smoot
- Department of Internal Medicine, Meharry Medical College, Nashville, Tennessee
| | - Seon-Young Kim
- Medical Genomics Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - Chan Choi
- Department of Pathology, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Jeonnam, Republic of Korea
| | - Gou Young Koh
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,Center for Vascular Research, Institute for Basic Science, Daejeon, Republic of Korea
| | - Dae-Sik Lim
- National Creative Research Initiatives Center for Cell Division and Differentiation, Department of Biological Sciences, KAIST, Daejeon, Republic of Korea.
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Kang D, Choi C, Kim H, Park S, Kim S, Ryu D, Ko J, Lee J, Lee J, Lee K, Kwon B, Kim H, Nam H. Associated factors with overlooked multiple synchronous gastric epithelial neoplasia. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy151.068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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47
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Kim S, Choi C, Kang D, Kim H, Park S, Ryu D, Ko J, Kim H, Kwon B, Lee K, Lee J, Lee J, Nam H. Clinical outcomes of endoscopic submucosal dissection for lesions on the proximal location of the stomach. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy151.067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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48
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Kang D, Kim H, Choi C, Park S, Kim S, Nam H, Ryu D, Ko J, Kim H, Kwon B, Lee K, Lee J, Lee J. Long-term clinical outcomes in large colorectal polyps with indefinite or positive resection margin after endoscopic resection. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy151.228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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49
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Kim W, Na J, Jang W, Park E, Choi J, Choi C, Kim J, Kim E, Rha S, Park C, Seo H, Lim H. 0880 Sleep Quality Change After RFCA In Paroxysmal Atrial Fibrillation& Relation Of Sleep Stability To The Recurrence: 24-hour Holter-based Cardiopulmonary Coupling Analysis. Sleep 2018. [DOI: 10.1093/sleep/zsy061.879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- W Kim
- Korea University Guro Hospital, Seoul, KOREA, REPUBLIC OF
| | - J Na
- Korea University Guro Hospital, Seoul, KOREA, REPUBLIC OF
| | - W Jang
- Korea University Guro Hospital, Seoul, KOREA, REPUBLIC OF
| | - E Park
- Korea University Guro Hospital, Seoul, KOREA, REPUBLIC OF
| | - J Choi
- Korea University Guro Hospital, Seoul, KOREA, REPUBLIC OF
| | - C Choi
- Korea University Guro Hospital, Seoul, KOREA, REPUBLIC OF
| | - J Kim
- Korea University Guro Hospital, Seoul, KOREA, REPUBLIC OF
| | - E Kim
- Korea University Guro Hospital, Seoul, KOREA, REPUBLIC OF
| | - S Rha
- Korea University Guro Hospital, Seoul, KOREA, REPUBLIC OF
| | - C Park
- Korea University Guro Hospital, Seoul, KOREA, REPUBLIC OF
| | - H Seo
- Korea University Guro Hospital, Seoul, KOREA, REPUBLIC OF
| | - H Lim
- Korea University Guro Hospital, Seoul, KOREA, REPUBLIC OF
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Shin SY, Lee DH, Lee J, Choi C, Kim JY, Nam JS, Lim Y, Lee YH. C-C motif chemokine receptor 1 (CCR1) is a target of the EGF-AKT-mTOR-STAT3 signaling axis in breast cancer cells. Oncotarget 2017; 8:94591-94605. [PMID: 29212252 PMCID: PMC5706898 DOI: 10.18632/oncotarget.21813] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [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: 06/08/2017] [Accepted: 09/20/2017] [Indexed: 01/05/2023] Open
Abstract
The CC motif chemokine receptor 1 (CCR1) has been implicated in tumor invasion and metastasis in numerous cancers. However, the detailed mechanism of CCR1 upregulation in metastatic tumor cells is poorly understood. The aim of this study was to clarify the regulatory mechanism underlying transcriptional activation of the CCR1 gene in response to epidermal growth factor (EGF) stimulation in breast cancer cells. CCR1 was highly expressed in human breast invasive ductal carcinoma (IDC) compared to adjacent normal tissues. Upon EGF stimulation, CCR1 expression was upregulated at the transcriptional level. Promoter analysis showed that signal transducer and activator of transcription 3 (STAT3) is necessary for EGF-induced CCR1 promoter activation, and STAT3 silencing abrogated EGF-induced CCR1 transcription. Pharmacological inhibition and short hairpin RNA-mediated knockdown experiments showed that AKT-dependent mammalian target of rapamycin (mTOR) activation was involved in the phosphorylation of serine-727 of STAT3, which in turn stimulated the transcription of the CCR1 gene. In conclusion, the AKT-mTOR-STAT3 signaling axis contributes to EGF-induced CCR1 expression, which promotes invasion and metastasis in breast cancer cells. We propose that the AKT-mTOR-STAT3 axis is a potential therapeutic target for blocking the invasion and metastasis of breast cancers.
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Affiliation(s)
- Soon Young Shin
- Department of Biological Sciences, Sanghuh College of Life Sciences, Konkuk University, Seoul, Republic of Korea
- Cancer and Metabolism Institute, Konkuk University, Seoul, Republic of Korea
| | - Da Hyun Lee
- Department of Biological Sciences, Sanghuh College of Life Sciences, Konkuk University, Seoul, Republic of Korea
| | - Jishin Lee
- Department of Pathology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Chan Choi
- Department of Pathology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Ji-Young Kim
- Laboratory Animal Resource Center, Gwangju Institute of Science and Technology, Gwangju, Republic of Korea
| | - Jeong-Seok Nam
- School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, Republic of Korea
| | - Yoongho Lim
- Division of Bioscience and Biotechnology, BMIC, Konkuk University, Seoul, Republic of Korea
| | - Young Han Lee
- Department of Biological Sciences, Sanghuh College of Life Sciences, Konkuk University, Seoul, Republic of Korea
- Cancer and Metabolism Institute, Konkuk University, Seoul, Republic of Korea
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