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Koyasu S, Sugimoto A, Matsubara J, Muto M, Nakamoto Y. SMARCA4-Deficient Poorly Differentiated Adenocarcinoma of the Gallbladder. Clin Nucl Med 2024:00003072-990000000-01048. [PMID: 38598517 DOI: 10.1097/rlu.0000000000005217] [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: 04/12/2024]
Abstract
ABSTRACT A 64-year-old woman presented with chest pain while eating and was referred to our hospital. Physical examination revealed abdominal distension, tenderness, and lower-extremity edema. Imaging revealed a large gallbladder tumor infiltrating the liver, with ascites and pleural effusion. A biopsy confirmed a poorly differentiated adenocarcinoma with SMARCA4 deficiency (cT3N2M1, cStage IV). Chemotherapy was ineffective and led to tumor progression. The patient died 9 months later. Recently, attention has been paid to SMARCA4 deficiency, which is a genetic mutation found in tumors. Here, we report on poorly differentiated adenocarcinomas of the gallbladder based on imaging findings, including FDG PET.
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Affiliation(s)
- Sho Koyasu
- From the Departments of Diagnostic Imaging and Nuclear Medicine
| | | | - Junichi Matsubara
- Therapeutic Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Manabu Muto
- Therapeutic Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yuji Nakamoto
- From the Departments of Diagnostic Imaging and Nuclear Medicine
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2
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Tanaka H, Koyasu S, Kikuchi M, Iima M, Omori K, Nakamoto Y. Utility of Diffusion-weighted MR Imaging for Evaluating the Depth of Invasion in Oral Tongue Squamous Cell Carcinoma. Magn Reson Med Sci 2024:mp.2023-0137. [PMID: 38447989 DOI: 10.2463/mrms.mp.2023-0137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2024] Open
Abstract
PURPOSE The 8th edition of the American Joint Committee on Cancer staging system included the depth of invasion (DOI) for the T classification of oral cancer. However, no standardized method has been established to clinically measure the DOI. This study aimed to investigate the accuracy of MRI-based DOI for oral tongue squamous cell carcinoma (OTSCC) in each MRI sequence. METHODS We enrolled 49 patients with histologically proven OTSCC, treated surgically between April 2017 and February 2021. We divided the DOI into three groups using 5 and 10 mm, the thresholds for determining the T stage, and retrospectively evaluated the agreement between MRI-based DOI and pathological DOI (pDOI) for each MRI sequence, axial T1-weighted imaging (T1WI), T2-weighted imaging with fat suppression (FS-T2WI), contrast-enhanced T1WI with fat suppression (CE-T1WI), diffusion-weighted imaging (DWI), and apparent diffusion coefficient (ADC) maps. We also divided the DOI into two groups using 3 mm, the threshold for considering elective neck dissection, and evaluated the overestimation rate of MRI-based DOI in lesions with pDOI ≤ 3 mm. RESULTS With 5-mm and 10-mm divisions, the accuracy of the DOI assessment was highest on DWI (0.82, weighted kappa = 0.85). With a 3-mm division, the accuracy was also highest on DWI (0.87, kappa = 0.73). The overestimation rate of the MRI-based DOI in lesions with pDOI ≤ 3 mm was lowest on DWI (27.8%). CONCLUSION DOI on DWI exhibits a comparatively higher rate of concordance with pDOI. DWI may be more useful than other MRI sequences in evaluating the DOI of OTSCC.
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Affiliation(s)
- Hiroki Tanaka
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Kyoto, Japan
| | - Sho Koyasu
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Kyoto, Japan
| | - Masahiro Kikuchi
- Department of Otolaryngology, Head and Neck Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Kyoto, Japan
- Department of Otolaryngology, Head and Neck Surgery, Kobe City Medical Center General Hospital, Kobe, Hyogo, Japan
| | - Mami Iima
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Kyoto, Japan
- Institute for Advancement of Clinical and Translational Science, Kyoto University Hospital, Kyoto, Kyoto, Japan
| | - Koichi Omori
- Department of Otolaryngology, Head and Neck Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Kyoto, Japan
| | - Yuji Nakamoto
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Kyoto, Japan
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Takamura T, Koyasu S, Sugimoto A, Yamamoto T, Nakamoto Y. Hyalinizing Clear Cell Carcinoma in the Sphenoid Sinus. Clin Nucl Med 2024; 49:287-288. [PMID: 38170933 DOI: 10.1097/rlu.0000000000005017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
ABSTRACT A 39-year-old man presented with a 1-month history of headaches. Imaging revealed a mass with extensive destruction. T2-weighted imaging displayed mixture of low and sponge-like high intensities and also dark area, with FDG PET/CT showing uneven but intense accumulation. Biopsy confirmed EWSR1 rearrangement, and hyalinizing clear cell carcinoma (HCCC) was diagnosed. HCCC, recently renamed from clear cell carcinoma in the fifth edition of the World Health Organization Classification of Head and Neck Tumors, is a rare tumor. This case describes the features of T2-weighted imaging and FDG PET patterns in HCCC, possibly contributing to their consideration in the differential diagnosis.
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Affiliation(s)
| | - Sho Koyasu
- From the Departments of Diagnostic Imaging and Nuclear Medicine
| | - Akihiko Sugimoto
- Diagnostic Pathology, Graduate School of Medicine, Kyoto University
| | | | - Yuji Nakamoto
- From the Departments of Diagnostic Imaging and Nuclear Medicine
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Shirai Y, Suwa T, Kobayashi M, Koyasu S, Harada H. DDX5 enhances HIF-1 activity by promoting the interaction of HIF-1α with HIF-1β and recruiting the resulting heterodimer to its target gene loci. Biol Cell 2024; 116:e2300077. [PMID: 38031929 DOI: 10.1111/boc.202300077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 11/18/2023] [Accepted: 11/22/2023] [Indexed: 12/01/2023]
Abstract
BACKGROUND INFORMATION Cancer cells acquire malignant characteristics and therapy resistance by employing the hypoxia-inducible factor 1 (HIF-1)-dependent adaptive response to hypoxic microenvironment in solid tumors. Since the underlying molecular mechanisms remain unclear, difficulties are associated with establishing effective therapeutic strategies. RESULTS We herein identified DEAD-box helicase 5 (DDX5) as a novel activator of HIF-1 and found that it enhanced the heterodimer formation of HIF-1α and HIF-1β and facilitated the recruitment of the resulting HIF-1 to its recognition sequence, hypoxia-response element (HRE), leading to the expression of a subset of cancer-related genes under hypoxia. CONCLUSIONS This study reveals that the regulation of HIF-1 recruitment to HRE is an important regulatory step in the control of HIF-1 activity. SIGNIFICANCE The present study provides novel insights for the development of strategies to inhibit the HIF-1-dependent expression of cancer-related genes.
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Affiliation(s)
- Yukari Shirai
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Tatsuya Suwa
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
- Department of Genome Repair Dynamics, Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
- Medical Research Council Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Oxford, UK
| | - Minoru Kobayashi
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
- Department of Genome Repair Dynamics, Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Sho Koyasu
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
- Department of Genome Repair Dynamics, Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hiroshi Harada
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
- Department of Genome Repair Dynamics, Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
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Enokizono M, Kurokawa R, Yagishita A, Nakata Y, Koyasu S, Nihira H, Kuwashima S, Aida N, Kono T, Mori H. Clinical and neuroimaging review of monogenic cerebral small vessel disease from the prenatal to adolescent developmental stage. Jpn J Radiol 2024; 42:109-125. [PMID: 37847489 PMCID: PMC10810974 DOI: 10.1007/s11604-023-01493-0] [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: 09/12/2023] [Accepted: 09/15/2023] [Indexed: 10/18/2023]
Abstract
Cerebral small vessel disease (cSVD) refers to a group of pathological processes with various etiologies affecting the small vessels of the brain. Most cases are sporadic, with age-related and hypertension-related sSVD and cerebral amyloid angiopathy being the most prevalent forms. Monogenic cSVD accounts for up to 5% of causes of stroke. Several causative genes have been identified. Sporadic cSVD has been widely studied whereas monogenic cSVD is still poorly characterized and understood. The majority of cases of both the sporadic and monogenic types, including cerebral autosomal-dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL), typically have their onset in adulthood. Types of cSVD with infantile and childhood onset are rare, and their diagnosis is often challenging. The present review discusses the clinical and neuroimaging findings of monogenic cSVD from the prenatal to adolescent period of development. Early diagnosis is crucial to enabling timely interventions and family counseling.
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Affiliation(s)
- Mikako Enokizono
- Department of Radiology, Tokyo Metropolitan Children's Medical Center, 2-8-29 Musashidai, Fuchu, Tokyo, 183-8561, Japan.
| | - Ryo Kurokawa
- Department of Radiology, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Akira Yagishita
- Department of Neuroradiology, Tokyo Metropolitan Neurological Hospital, Fuchu, Tokyo, Japan
| | - Yasuhiro Nakata
- Department of Neuroradiology, Tokyo Metropolitan Neurological Hospital, Fuchu, Tokyo, Japan
| | - Sho Koyasu
- Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University, Sakyo-ku, Kyoto, Japan
| | - Hiroshi Nihira
- Department of Pediatrics, Kyoto University, Sakyo-ku, Kyoto, Japan
| | - Shigeko Kuwashima
- Department of Radiology, Dokkyo Medical University, Shimotsuga-gun, Tochigi, Japan
| | - Noriko Aida
- Department of Radiology, Kanagawa Children's Medical Center, Yokohama, Kanagawa, Japan
| | - Tatsuo Kono
- Department of Radiology, Tokyo Metropolitan Children's Medical Center, 2-8-29 Musashidai, Fuchu, Tokyo, 183-8561, Japan
| | - Harushi Mori
- Department of Radiology, School of Medicine, Jichi Medical University, Shimotsuke, Tochigi, Japan
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Onishi Y, Shimizu H, Koyasu S, Taura D, Takahashi A, Uza N, Isoda H, Nakamoto Y. Association Between Pancreatic Cysts and Diabetes Mellitus in Von Hippel-Lindau Disease. Cureus 2024; 16:e54781. [PMID: 38529425 PMCID: PMC10961190 DOI: 10.7759/cureus.54781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/20/2024] [Indexed: 03/27/2024] Open
Abstract
INTRODUCTION Pancreatic cysts are frequently observed in patients with von Hippel-Lindau disease (VHL), and they are considered clinically not important. This study aimed to evaluate the association between pancreatic cysts and diabetes mellitus (DM) in patients with VHL. METHODS Among patients who were on a patient list at the VHL Center at Kyoto University Hospital as of December 2022, those who had undergone an upper abdominal magnetic resonance imaging study after 2010 were retrospectively evaluated. The presence or absence of DM and high glycated hemoglobin (HbA1c) levels (>6.0%) were assessed. Patients were divided into two groups: those with DM or high HbA1c levels, and those without DM or high HbA1c levels. The area of the whole pancreas, including the pancreatic cysts and tumors, the area of the pancreatic cysts, and the percentage of pancreatic cysts, calculated by dividing the area of pancreatic cysts by the area of the whole pancreas, were measured on T2-weighted magnetic resonance images and compared between the two groups. RESULTS Thirty-six patients with VHL, comprising 22 men and 14 women, with a mean age of 36.4 years (range, 11-79 years), were identified. Seven patients had DM, and two additional patients had high HbA1c levels. The area of the pancreatic cysts (p = 0.0013) was significantly larger and the percentage of the pancreatic cysts (p = 0.0016) was significantly higher in patients with DM or high HbA1c levels (n = 9) than in patients without DM or high HbA1c levels (n = 27); however, the difference in the area of the whole pancreas was not significant (p = 0.068). CONCLUSION Our findings suggest that patients with VHL who have a large area covered by pancreatic cysts are more likely to have DM than those without.
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Affiliation(s)
- Yasuyuki Onishi
- Diagnostic Imaging and Nuclear Medicine, Kyoto University, Kyoto, JPN
| | - Hironori Shimizu
- Diagnostic Imaging and Nuclear Medicine, Kyoto University, Kyoto, JPN
| | - Sho Koyasu
- Diagnostic Imaging and Nuclear Medicine, Kyoto University, Kyoto, JPN
- Von Hippel-Lindau Disease (VHL) Center, Kyoto University Hospital, Kyoto, JPN
| | - Daisuke Taura
- Diabetes, Endocrinology and Nutrition, Kyoto University, Kyoto, JPN
- Von Hippel-Lindau Disease (VHL) Center, Kyoto University Hospital, Kyoto, JPN
| | - Ayako Takahashi
- Ophthalmology, Kyoto University, Kyoto, JPN
- Von Hippel-Lindau Disease (VHL) Center, Kyoto University Hospital, Kyoto, JPN
| | - Norimitsu Uza
- Gastroenterology and Hepatology, Kyoto University, Kyoto, JPN
- Von Hippel-Lindau Disease (VHL) Center, Kyoto University Hospital, Kyoto, JPN
| | - Hiroyoshi Isoda
- Diagnostic Imaging and Nuclear Medicine, Kyoto University, Kyoto, JPN
| | - Yuji Nakamoto
- Diagnostic Imaging and Nuclear Medicine, Kyoto University, Kyoto, JPN
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Kidera E, Koyasu S, Hirata K, Hamaji M, Nakamoto R, Nakamoto Y. Convolutional neural network-based program to predict lymph node metastasis of non-small cell lung cancer using 18F-FDG PET. Ann Nucl Med 2024; 38:71-80. [PMID: 37755604 DOI: 10.1007/s12149-023-01866-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Accepted: 09/11/2023] [Indexed: 09/28/2023]
Abstract
PURPOSE To develop a convolutional neural network (CNN)-based program to analyze maximum intensity projection (MIP) images of 2-deoxy-2-[F-18]fluoro-D-glucose (FDG) positron emission tomography (PET) scans, aimed at predicting lymph node metastasis of non-small cell lung cancer (NSCLC), and to evaluate its effectiveness in providing diagnostic assistance to radiologists. METHODS We obtained PET images of NSCLC from public datasets, including those of 435 patients with available N-stage information, which were divided into a training set (n = 304) and a test set (n = 131). We generated 36 maximum intensity projection (MIP) images for each patient. A residual network (ResNet-50)-based CNN was trained using the MIP images of the training set to predict lymph node metastasis. Lymph node metastasis in the test set was predicted by the trained CNN as well as by seven radiologists twice: first without and second with CNN assistance. Diagnostic performance metrics, including accuracy and prediction error (the difference between the truth and the predictions), were calculated, and reading times were recorded. RESULTS In the test set, 67 (51%) patients exhibited lymph node metastases and the CNN yielded 0.748 predictive accuracy. With the assistance of the CNN, the prediction error was significantly reduced for six of the seven radiologists although the accuracy did not change significantly. The prediction time was significantly reduced for five of the seven radiologists with the median reduction ratio 38.0%. CONCLUSION The CNN-based program could potentially assist radiologists in predicting lymph node metastasis by increasing diagnostic confidence and reducing reading time without affecting diagnostic accuracy, at least in the limited situations using MIP images.
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Affiliation(s)
- Eitaro Kidera
- Department of Radiology, Kishiwada City Hospital, Kishiwada, Japan
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Sho Koyasu
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan.
| | - Kenji Hirata
- Department of Diagnostic Imaging, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Masatsugu Hamaji
- Department of Thoracic Surgery, Kyoto University Hospital, Kyoto University, Kyoto, Japan
| | - Ryusuke Nakamoto
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Yuji Nakamoto
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
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Koyasu S, Sakurada H, Nakamoto Y. Letter regarding the article "Frequency and Imaging Features of Adjacent Osseous Changes of Salivary Gland Carcinomas in the Head and Neck Region" by Horiuchi and Shimono et al. Neuroradiology 2023; 65:1315. [PMID: 37458787 DOI: 10.1007/s00234-023-03199-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Accepted: 07/11/2023] [Indexed: 08/16/2023]
Affiliation(s)
- Sho Koyasu
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawahara-Cho, Sakyo-Ku, Kyoto-City, 606-8507, Japan.
| | - Hiroki Sakurada
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawahara-Cho, Sakyo-Ku, Kyoto-City, 606-8507, Japan
| | - Yuji Nakamoto
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawahara-Cho, Sakyo-Ku, Kyoto-City, 606-8507, Japan
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Araki O, Tsuda M, Omatsu M, Namikawa M, Sono M, Fukunaga Y, Masuda T, Yoshikawa T, Nagao M, Ogawa S, Masuo K, Goto N, Muta Y, Hiramatsu Y, Maruno T, Nakanishi Y, Koyasu S, Masui T, Hatano E, Saur D, Fukuda A, Seno H. Brg1 controls stemness and metastasis of pancreatic cancer through regulating hypoxia pathway. Oncogene 2023:10.1038/s41388-023-02716-4. [PMID: 37198398 DOI: 10.1038/s41388-023-02716-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 05/01/2023] [Accepted: 05/04/2023] [Indexed: 05/19/2023]
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is a devastating disease. We previously reported that chromatin remodeler Brg1 is essential for acinar cell-derived PDAC formation in mice. However, the functional role of Brg1 in established PDAC and its metastasis remains unknown. Here, we investigated the importance of Brg1 for established PDAC by using a mouse model with a dual recombinase system. We discovered that Brg1 was a critical player for the cell survival and growth of spontaneously developed PDAC in mice. In addition, Brg1 was essential for metastasis of PDAC cells by inhibiting apoptosis in splenic injection and peritoneal dissemination models. Moreover, cancer stem-like property was compromised in PDAC cells by Brg1 ablation. Mechanistically, the hypoxia pathway was downregulated in Brg1-deleted mouse PDAC and BRG1-low human PDAC. Brg1 was essential for HIF-1α to bind to its target genes to augment the hypoxia pathway, which was important for PDAC cells to maintain their stem-like properties and to metastasize to the liver. Human PDAC cells with high BRG1 expression were more susceptible to BRG1 suppression. In conclusion, Brg1 plays a critical role for cell survival, stem-like property and metastasis of PDAC through the regulation of hypoxia pathway, and thus could be a novel therapeutic target for PDAC.
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Affiliation(s)
- Osamu Araki
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Motoyuki Tsuda
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Mayuki Omatsu
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Mio Namikawa
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Makoto Sono
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yuichi Fukunaga
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
- Department of Drug Discovery Medicine, Medical Innovation Center, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Tomonori Masuda
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Takaaki Yoshikawa
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Munemasa Nagao
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Satoshi Ogawa
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Kenji Masuo
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Norihiro Goto
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yu Muta
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yukiko Hiramatsu
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Takahisa Maruno
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yuki Nakanishi
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Sho Koyasu
- Departments of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Toshihiko Masui
- Division of Hepato-Biliary-Pancreatic Surgery and Transplantation, Department of Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Etsuro Hatano
- Division of Hepato-Biliary-Pancreatic Surgery and Transplantation, Department of Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Dieter Saur
- Department of Internal Medicine II, Klinikum rechts der Isar, Technische Universität München, München, Germany
| | - Akihisa Fukuda
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan.
| | - Hiroshi Seno
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
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Jin S, Jin B, Ishikawa T, Ninagawa S, Okada T, Koyasu S, Harada H, Mori K. Loss of ATF6α in a human carcinoma cell line is compensated not by its paralogue ATF6β but by sustained activation of the IRE1 and PERK arms for tumor growth in nude mice. Mol Biol Cell 2023; 34:ar20. [PMID: 36696173 PMCID: PMC10011727 DOI: 10.1091/mbc.e22-07-0292] [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: 01/26/2023] Open
Abstract
To survive poor nutritional conditions, tumor cells activate the unfolded protein response, which is composed of the IRE1, PERK, and ATF6 arms, to maintain the homeostasis of the endoplasmic reticulum, where secretory and transmembrane proteins destined for the secretory pathway gain their correct three-dimensional structure. The requirement of the IRE1 and PERK arms for tumor growth in nude mice is established. Here we investigated the requirement for the ATF6 arm, which consists of ubiquitously expressed ATF6α and ATF6β, by constructing ATF6α-knockout (KO), ATF6β-KO, and ATF6α/β-double KO (DKO) in HCT116 cells derived from human colorectal carcinoma. Results showed that these KO cells grew similarly to wild-type (WT) cells in nude mice, contrary to expectations from our analysis of ATF6α-KO, ATF6β-KO, and ATF6α/β-DKO mice. We then found that the loss of ATF6α in HCT116 cells resulted in sustained activation of the IRE1 and PERK arms in marked contrast to mouse embryonic fibroblasts, in which the loss of ATF6α is compensated for by ATF6β. Although IRE1-KO in HCT116 cells unexpectedly did not affect tumor growth in nude mice, IRE1-KO HCT116 cells with ATF6α knockdown grew significantly more slowly than WT or IRE1-KO HCT116 cells. These results have unraveled the situation-dependent differential compensation strategies of ATF6α.
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Affiliation(s)
- Shengyu Jin
- Department of Biophysics, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Byungseok Jin
- Department of Biophysics, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Tokiro Ishikawa
- Department of Biophysics, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Satoshi Ninagawa
- Department of Biophysics, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Tetsuya Okada
- Department of Biophysics, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Sho Koyasu
- Department of Biophysics, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Hiroshi Harada
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Kyoto 606-8501, Japan
| | - Kazutoshi Mori
- Department of Biophysics, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
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Takahashi A, Muraoka Y, Koyasu S, Arakawa Y, Nakamura E, Tsujikawa A. Novel Manifestation of Retinal Hemangioblastomas Detected by OCT Angiography in von Hippel-Lindau Disease. Ophthalmology 2023:S0161-6420(23)00113-6. [PMID: 36775026 DOI: 10.1016/j.ophtha.2023.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 01/31/2023] [Accepted: 02/06/2023] [Indexed: 02/12/2023] Open
Abstract
PURPOSE To elucidate the clinical characteristics of atypical retinal vascular proliferation in patients with von Hippel-Lindau (VHL) disease using OCT angiography (OCTA). DESIGN Prospective, observational study. PARTICIPANTS Fifty-seven consecutive patients with a diagnosis of VHL disease who visited Kyoto University Hospital between January 2019 and March 2022. METHODS Retinal hemangioblastomas (RHs) were assessed using multimodal imaging including OCTA. RHs were classified into 2 phenotypes: nodular and flat. Nodular RHs were defined as typical RHs that were globular, well-circumscribed tumors, often accompanied with dilated feeder arterioles and draining venules. Flat RHs lacked a protruded red or colored mass, had variable and indistinct borders, and were not accompanied with feeder and draining vessels. MAIN OUTCOME MEASURES The prevalence, distribution, and description of atypical flat RHs. RESULTS Among 57 consecutive patients with VHL disease, 37 patients (64.9%) showed RHs in at least 1 eye. Bilateral RHs were seen in 23 patients (62.2%). Among 58 eyes of 37 patients with RHs, typical nodular RHs were detected in 54 eyes. Nodular RHs were seen mainly in the peripheral retina and occasionally in the peripapillary region, and they showed exudative changes in some cases. Flat RHs were detected in 7 eyes (12.1%). Four eyes showed only flat RHs, and 3 eyes showed both types in the same eye. Most flat RHs appeared as retinal hemorrhages or faint flat abnormal retinal vessels in the inner retina on the fundus examination, often within the macula area or peripapillary. In all eyes with flat RHs, OCTA showed abundant blood flow in the lesions. OCT revealed that flat RHs were seen mainly between the retinal nerve fiber layer and the ganglion cell layer, and occasionally within the inner nuclear layer. During a mean follow-up period of 20.4 ± 15.0 months, no flat RHs accompanied exudative change, tractional retinal detachment, or progression in size. CONCLUSIONS Patients with VHL disease can demonstrate 2 distinct types of RHs: the classic nodular type and an atypical flat type. OCT angiography can be useful in improving the detection of atypical flat RHs, which can be difficult to detect clinically. FINANCIAL DISCLOSURE(S) Proprietary or commercial disclosure may be found after the references.
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Affiliation(s)
- Ayako Takahashi
- Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan; VHL Center, Kyoto University Hospital, Kyoto, Japan.
| | - Yuki Muraoka
- Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Sho Koyasu
- VHL Center, Kyoto University Hospital, Kyoto, Japan; Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yoshiki Arakawa
- VHL Center, Kyoto University Hospital, Kyoto, Japan; Department of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | | | - Akitaka Tsujikawa
- Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan; VHL Center, Kyoto University Hospital, Kyoto, Japan
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12
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Koyasu S, Horita S, Saito K, Kobayashi M, Ishikita H, Chow CCT, Kambe G, Nishikawa S, Menju T, Morinibu A, Okochi Y, Tabuchi Y, Onodera Y, Takeda N, Date H, Semenza GL, Hammond EM, Harada H. ZBTB2 links p53 deficiency to HIF-1-mediated hypoxia signaling to promote cancer aggressiveness. EMBO Rep 2023; 24:e54042. [PMID: 36341521 PMCID: PMC9827547 DOI: 10.15252/embr.202154042] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 10/16/2022] [Accepted: 10/19/2022] [Indexed: 11/09/2022] Open
Abstract
Aberrant activation of the hypoxia-inducible transcription factor HIF-1 and dysfunction of the tumor suppressor p53 have been reported to induce malignant phenotypes and therapy resistance of cancers. However, their mechanistic and functional relationship remains largely unknown. Here, we reveal a mechanism by which p53 deficiency triggers the activation of HIF-1-dependent hypoxia signaling and identify zinc finger and BTB domain-containing protein 2 (ZBTB2) as an important mediator. ZBTB2 forms homodimers via its N-terminus region and increases the transactivation activity of HIF-1 only when functional p53 is absent. The ZBTB2 homodimer facilitates invasion, distant metastasis, and growth of p53-deficient, but not p53-proficient, cancers. The intratumoral expression levels of ZBTB2 are associated with poor prognosis in lung cancer patients. ZBTB2 N-terminus-mimetic polypeptides competitively inhibit ZBTB2 homodimerization and significantly suppress the ZBTB2-HIF-1 axis, leading to antitumor effects. Our data reveal an important link between aberrant activation of hypoxia signaling and loss of a tumor suppressor and provide a rationale for targeting a key mediator, ZBTB2, to suppress cancer aggressiveness.
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Affiliation(s)
- Sho Koyasu
- Laboratory of Cancer Cell Biology, Graduate School of BiostudiesKyoto UniversityKyotoJapan
- Department of Genome Repair Dynamics, Radiation Biology Center, Graduate School of BiostudiesKyoto UniversityKyotoJapan
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of MedicineKyoto UniversityKyotoJapan
- Research Center for Advanced Science and TechnologyThe University of TokyoTokyoJapan
| | - Shoichiro Horita
- Department of Bioregulation and Pharmacological MedicineFukushima Medical UniversityFukushimaJapan
| | - Keisuke Saito
- Research Center for Advanced Science and TechnologyThe University of TokyoTokyoJapan
| | - Minoru Kobayashi
- Laboratory of Cancer Cell Biology, Graduate School of BiostudiesKyoto UniversityKyotoJapan
- Department of Genome Repair Dynamics, Radiation Biology Center, Graduate School of BiostudiesKyoto UniversityKyotoJapan
| | - Hiroshi Ishikita
- Research Center for Advanced Science and TechnologyThe University of TokyoTokyoJapan
| | - Christalle CT Chow
- Laboratory of Cancer Cell Biology, Graduate School of BiostudiesKyoto UniversityKyotoJapan
| | - Gouki Kambe
- Laboratory of Cancer Cell Biology, Graduate School of BiostudiesKyoto UniversityKyotoJapan
| | - Shigeto Nishikawa
- Department of Thoracic Surgery, Graduate School of MedicineKyoto UniversityKyotoJapan
| | - Toshi Menju
- Department of Thoracic Surgery, Graduate School of MedicineKyoto UniversityKyotoJapan
| | - Akiyo Morinibu
- Laboratory of Cancer Cell Biology, Graduate School of BiostudiesKyoto UniversityKyotoJapan
- Department of Genome Repair Dynamics, Radiation Biology Center, Graduate School of BiostudiesKyoto UniversityKyotoJapan
| | - Yasushi Okochi
- Laboratory of Cancer Cell Biology, Graduate School of BiostudiesKyoto UniversityKyotoJapan
- Faculty of MedicineKyoto UniversityKyotoJapan
| | - Yoshiaki Tabuchi
- Division of Molecular Genetics Research, Life Science Research CenterUniversity of ToyamaToyamaJapan
| | - Yasuhito Onodera
- Global Center for Biomedical Science and Engineering, Faculty of MedicineHokkaido UniversitySapporoJapan
| | - Norihiko Takeda
- Division of Cardiology and Metabolism, Center for Molecular MedicineJichi Medical UniversityTochigiJapan
| | - Hiroshi Date
- Department of Thoracic Surgery, Graduate School of MedicineKyoto UniversityKyotoJapan
| | - Gregg L Semenza
- McKusick‐Nathans Institute of Genetic MedicineJohns Hopkins University School of MedicineBaltimoreMarylandUSA
- Institute for Cell EngineeringJohns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Ester M Hammond
- MRC Oxford Institute for Radiation Oncology, Department of OncologyUniversity of OxfordOxfordUK
| | - Hiroshi Harada
- Laboratory of Cancer Cell Biology, Graduate School of BiostudiesKyoto UniversityKyotoJapan
- Department of Genome Repair Dynamics, Radiation Biology Center, Graduate School of BiostudiesKyoto UniversityKyotoJapan
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13
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Shirakawa C, Koyasu S, Takada M, Toi M, Nakamoto Y. Unilateral Reduction of 18F-FDG Accumulation in Brown Adipose Tissue by Sympathectomy for Hyperhidrosis. Clin Nucl Med 2023; 48:79-80. [PMID: 36469066 DOI: 10.1097/rlu.0000000000004393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
ABSTRACT A 30-year-old woman with left breast cancer underwent 18F-FDG PET/CT for staging. Intense FDG uptake was observed in the primary lesion, as well as on the left side of the neck to the supraclavicular fossa and left paravertebral region. History taking revealed that she had undergone a right thoracic sympathectomy for hyperhidrosis, which resulted in attenuated FDG uptake in the right-sided brown adipose tissue (BAT). With another examination keeping adequate warming, the accumulation of BAT was reduced and a diagnosis of cT1N1M0 was made. Unilateral sympathetic blockade can cause asymmetric FDG accumulation in BAT, which interferes with interpretation in tumors.
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Affiliation(s)
- Chigusa Shirakawa
- From the Department of Respiratory Medicine, Kobe City Medical Center General Hospital, Kobe
| | - Sho Koyasu
- Department of Diagnostic Radiology, Kyoto University Hospital
| | - Masahiro Takada
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masakazu Toi
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yuji Nakamoto
- Department of Diagnostic Radiology, Kyoto University Hospital
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14
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Kawai Y, Iima M, Yamamoto H, Kawai M, Kishimoto AO, Koyasu S, Yamamoto A, Omori K, Kishimoto Y. The added value of non-contrast 3-Tesla MRI for the pre-operative localization of hyperparathyroidism. Braz J Otorhinolaryngol 2022; 88 Suppl 4:S58-S64. [PMID: 34716111 DOI: 10.1016/j.bjorl.2021.07.010] [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: 06/01/2021] [Accepted: 07/19/2021] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVE We investigated the efficacy of non-contrast 3-Tesla MR imaging added to the combination of sestamibi with99mTc (MIBI) scintigraphy and Ultrasonography (US) for the pre-operative localization of Primary Hyperparathyroidism (PHPT) lesions. METHODS A total of 34 parathyroid glands, including nine normal glands, were examined with MIBI, US, and non-contrast 3-Tesla MRI. MRI was performed with the acquisition of T1- and T2-weighted images and fat-suppressed T2-weighted images. We calculated the sensitivities of MIBI, US, and the 'additional' MRI, with knowledge of the former two modalities' results. RESULTS For the diagnosis of PHPT lesions, the sensitivity values of MIBI, US, and additional MRI were 88.0% (22/25), 84.0% (21/25), and 92.0% (23/25), respectively. Normal glands were not visualized with any modality (0/9). One lesion was detected neither with US nor MRI, but only with MIBI, with the limitation that MIBI represented no more than laterality. The two glands not identified in MRI were 4 mm and 6 mm in their size, which are within the range of normal gland's size. Two lesions were not detected with US or MIBI but were visualized with the additional MRI, which indicated that the MRI contributed an 8.0% (2/25) improvement of sensitivity, compared from that of US. Fat-suppressed T2-weighted images were useful in the identification of parathyroid lesions, as these images helped to differentiate between the lesion and the adjacent tissue. CONCLUSION Additional non-contrast 3-Tesla MRI was a useful adjunctive tool for localization of PHPT, which improved the sensitivity of the pre-operative localization of PHPT lesions. Fat-suppressed T2-weighted images contributed to their identification. LEVEL VI Evidence from a single descriptive or qualitative study.
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Affiliation(s)
- Yoshitaka Kawai
- Kyoto University, Graduate School of Medicine, Department of Otolaryngology-Head and Neck Surgery, Kyoto, Japan
| | - Mami Iima
- Kyoto University, Graduate School of Medicine, Department of Diagnostic Imaging and Nuclear Medicine, Kyoto, Japan; Kyoto University Hospital, Institute for Advancement of Clinical and Translational Science (iACT), Department of Clinical Innovative Medicine, Kyoto, Japan
| | | | - Makiko Kawai
- Department of Radiology, Kyoto City Hospital, Kyoto, Japan
| | - Ayami Ohno Kishimoto
- Kyoto University, Graduate School of Medicine, Department of Diagnostic Imaging and Nuclear Medicine, Kyoto, Japan
| | - Sho Koyasu
- Kyoto University, Graduate School of Medicine, Department of Diagnostic Imaging and Nuclear Medicine, Kyoto, Japan
| | - Akira Yamamoto
- Kyoto University, Graduate School of Medicine, Department of Diagnostic Imaging and Nuclear Medicine, Kyoto, Japan
| | - Koichi Omori
- Kyoto University, Graduate School of Medicine, Department of Otolaryngology-Head and Neck Surgery, Kyoto, Japan
| | - Yo Kishimoto
- Kyoto University, Graduate School of Medicine, Department of Otolaryngology-Head and Neck Surgery, Kyoto, Japan.
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15
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Koyasu S, Shimizu Y, Nakamoto Y. [68Ga-DOTATOC PET/CT for Diagnosing Neuroendocrine Tumors]. Gan To Kagaku Ryoho 2022; 49:821-825. [PMID: 36046963] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Lutathera is a peptide receptor radionuclide therapy (PRRT) for neuroendocrine tumors and was approved as the first PRRT drug in Japan in 2021. Although neuroendocrine tumors are often less aggressive than other highly malignant and invasive tumors, there have been few effective therapy options, so "Lutathera"is a long-awaited treatment. Lutathera is indicated for the treatment of "somatostatin receptor-positive neuroendocrine tumors". Currently, in Japan, the only imaging method to evaluate the expression of somatostatin receptors in lesions is scintigraphy using In-111 pentetreotide(OctreoScan). In this section, we would like to introduce the current status of the 68Ga-DOTA-SSA PET/CT using somatostatin analogue(SSA)in our institution.
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Affiliation(s)
- Sho Koyasu
- Dept. of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University
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16
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Yamamoto H, Iima M, Kishimoto Y, Kishimoto AO, Koyasu S, Yamamoto A, Kawai Y, Yoshizawa A, Omori K. Preoperative Localization of Parathyroid Adenomas with Diffusion MR Imaging: Readout-segmented versus Single-shot Echo-planar Imaging. Magn Reson Med Sci 2022; 22:79-85. [PMID: 35249911 PMCID: PMC9849419 DOI: 10.2463/mrms.mp.2021-0149] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
PURPOSE To evaluate whether readout-segmented echo-planar imaging (RS-EPI) diffusion-weighted imaging (DWI) can reduce image distortion and improve the lesion identification in parathyroid adenomas (PTAs) compared to single-shot EPI (SS-EPI) DWI, and to determine whether PTAs can be differentiated from other soft tissue structures of the head and neck region by using the apparent diffusion coefficient (ADC) value. METHODS We retrospectively analyzed the preoperative MR images including DWI of 24 patients with surgically confirmed PTA. RS-EPI and SS-EPI DWI were evaluated by two independent readers for the identification of the lesions and distortion. The ADC values of the PTAs were compared with those of thyroid glands and cervical lymph nodes. RESULTS RS-EPI provided significantly less distortion compared to SS-EPI. RS-EPI tended to have better lesion identification compared with SS-EPI without a statistically significant difference. On SS-EPI, the PTAs had significantly higher ADC values compared with the cervical lymph nodes. On RS-EPI, the PTAs had significantly higher ADC values compared with the thyroid glands and cervical lymph nodes. CONCLUSION RS-EPI reduces the DWI distortion in PTAs. The ADC value obtained using RS-EPI enables the differentiation of PTAs from nearby structures, such as thyroid glands and cervical lymph nodes.
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Affiliation(s)
- Hirotaka Yamamoto
- Department of Otolaryngology, Shizuoka City Shizuoka Hospital, Shizuoka, Shizuoka, Japan
| | - Mami Iima
- Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Kyoto, Japan,Institute for Advancement of Clinical and Translational Science (iACT), Kyoto University Hospital, Kyoto, Kyoto, Japan
| | - Yo Kishimoto
- Department of Otolaryngology Head and Neck Surgery, Kyoto University Graduate School of Medicine, Kyoto, Kyoto, Japan,Corresponding author: Department of Otolaryngology Head and Neck Surgery, Graduate School of Medicine, Kyoto University, 54, Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, Kyoto 606-8507, Japan. Phone: +81-75-751-3346, Fax: +81-75-751-7225, E-mail:
| | - Ayami Ohno Kishimoto
- Institute for Advancement of Clinical and Translational Science (iACT), Kyoto University Hospital, Kyoto, Kyoto, Japan
| | - Sho Koyasu
- Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Kyoto, Japan
| | - Akira Yamamoto
- Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Kyoto, Japan
| | - Yoshitaka Kawai
- Department of Otolaryngology Head and Neck Surgery, Kyoto University Graduate School of Medicine, Kyoto, Kyoto, Japan
| | - Akira Yoshizawa
- Department of Otolaryngology Head and Neck Surgery, Kyoto University Graduate School of Medicine, Kyoto, Kyoto, Japan
| | - Koichi Omori
- Department of Otolaryngology Head and Neck Surgery, Kyoto University Graduate School of Medicine, Kyoto, Kyoto, Japan
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17
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Haitani T, Kobayashi M, Koyasu S, Akamatsu S, Suwa T, Onodera Y, Nam JM, Nguyen PTL, Menju T, Date H, Ogawa O, Harada H. Proteolysis of a histone acetyl reader, ATAD2, induces chemoresistance of cancer cells under severe hypoxia by inhibiting cell cycle progression in S phase. Cancer Lett 2022; 528:76-84. [PMID: 34973392 DOI: 10.1016/j.canlet.2021.12.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 12/01/2021] [Accepted: 12/26/2021] [Indexed: 11/27/2022]
Abstract
Cancer cells acquire chemoresistance in hypoxic regions of solid tumors, which is suggested to be at least partly due to reduction of their proliferative activity. However, molecular mechanisms behind it have not been fully elucidated. Here, we revealed the importance of active proteolysis of a histone acetylation reader, ATPase family AAA domain containing 2 (ATAD2), under hypoxia. We found that inactivation of an O2/Fe2+/α-ketoglutarate-dependent dioxygenase triggered ATAD2 proteolysis by the proteasome system upon severe hypoxia in a hypoxia-inducible factors (HIFs)-independent manner. Consistently, ATAD2 expression levels were markedly lower in perinecrotic hypoxic regions in both xenografted and clinical tumor tissues. The ATAD2 proteolysis was accompanied by a decrease in the amount of acetylated histone H3 lysine 27 and inhibited cell cycle progression from the early to late S phase under severe hypoxia. The retardation of S phase progression induced chemoresistance, which was blocked by overexpression of ATAD2. Together, these results indicate that ATAD2 proteolysis upon severe hypoxia induces chemoresistance of cancer cells through heterochromatinization and the subsequent retardation of S phase progression; therefore, inhibition of ATAD2 proteolysis is expected to be a strategy to overcome chemoresistance of hypoxic tumor cells.
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Affiliation(s)
- Takao Haitani
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan; Department of Genome Dynamics, Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan; Department of Urology, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Minoru Kobayashi
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan; Department of Genome Dynamics, Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Sho Koyasu
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan; Department of Genome Dynamics, Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan; Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8904, Japan
| | - Shusuke Akamatsu
- Department of Urology, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Tatsuya Suwa
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan; Department of Genome Dynamics, Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan; Department of Radiation Oncology and Image-applied Therapy, Graduate School of Medicine, Kyoto University, Kyoto, 606-8507, Japan
| | - Yasuhito Onodera
- Global Center for Biomedical Science and Engineering, Faculty of Medicine, Hokkaido University, Sapporo, 060-8638, Japan
| | - Jin-Min Nam
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan; Department of Genome Dynamics, Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Phuong Thi Lien Nguyen
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan; Department of Genome Dynamics, Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Toshi Menju
- Department of Thoracic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, 606-8507, Japan
| | - Hiroshi Date
- Department of Thoracic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, 606-8507, Japan
| | - Osamu Ogawa
- Department of Urology, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Hiroshi Harada
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan; Department of Genome Dynamics, Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan.
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Koyasu S, Nakamoto Y. 111In-Pentetreotide Uptake Due to COVID-19 Vaccination. Clin Nucl Med 2022; 47:271-272. [PMID: 34619700 PMCID: PMC8820749 DOI: 10.1097/rlu.0000000000003935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 08/13/2021] [Accepted: 08/13/2021] [Indexed: 11/26/2022]
Abstract
ABSTRACT A 72-year-old woman was referred for whole-body 111In-pentetreotide scintigraphy with SPECT/CT. There was increased uptake of lymphadenopathy in the left axilla and left deltoid muscle. The patient's history revealed that the patient received the first dose of the COVID-19 vaccine 3 days before the 111In-pentetreotide scintigraphy with SPECT/CT. This case demonstrates that the COVID-19 vaccine can cause 111In-pentetreotide uptake in the lymph nodes and the deltoid muscle.
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19
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Kidera E, Koyasu S, Hayakawa N, Ishimori T, Nakamoto Y. Association between diffuse renal uptake of 18F-FDG and acute kidney injury. Ann Nucl Med 2022; 36:351-359. [DOI: 10.1007/s12149-021-01713-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 12/26/2021] [Indexed: 12/23/2022]
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Kawamura H, Koyasu S, Sugimoto A, Nakamoto Y. Two Cases of Epstein-Barr Virus-Positive Mucocutaneous Ulcer Mimicking Head and Neck Cancers in 18F-FDG PET/CT. Clin Nucl Med 2022; 47:e105-e107. [PMID: 34269731 DOI: 10.1097/rlu.0000000000003807] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
ABSTRACT Epstein-Barr virus-positive mucocutaneous ulcer is a newly recognized clinicopathological entity among mature B-cell neoplasms according to the 2016 revision of the World Health Organization diagnostic criteria. Here, we present FDG PET/CT images of 2 Epstein-Barr virus-positive mucocutaneous ulcer cases. Both cases shown in the images mimicked head and neck cancers, which are similar to carcinomas of the tonsil and gingiva, respectively, and both lesions showed intense FDG uptake on PET scan.
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Affiliation(s)
- Hitomi Kawamura
- From the Departments of Diagnostic Imaging and Nuclear Medicine
| | - Sho Koyasu
- From the Departments of Diagnostic Imaging and Nuclear Medicine
| | - Akihiko Sugimoto
- Diagnostic Pathology, Graduate School of Medicine, Kyoto University, Kyoto City, Japan
| | - Yuji Nakamoto
- From the Departments of Diagnostic Imaging and Nuclear Medicine
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Iemura-Kashiwagi M, Kikuchi M, Koyasu S, Kitada Y, Sugimoto A, Haga H, Nakamoto Y, Nakagawa T, Omori K. Angiomatous Nasal Polyp Diagnosed by Preoperative Imaging and Successfully Resected by Endonasal Endoscopic Surgery: A Case Report. Cureus 2021; 13:e18786. [PMID: 34796072 PMCID: PMC8590532 DOI: 10.7759/cureus.18786] [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] [Accepted: 10/14/2021] [Indexed: 11/05/2022] Open
Abstract
Angiomatous polyp is a benign, nonneoplastic nasal polyp that accounts for 4-5% of all inflammatory nasal polyps but is rarely reported in the literature. It can grow rapidly and exhibit an aggressive clinical behavior that can simulate malignant sinonasal tumor. We herein report a case of a 13-year-old boy with a rapidly growing angiomatous polyp in the nasal cavity. We had followed up the patient without significant changes for two years, but the tumor had rapidly grown in the last six months. At first, the rapid growth of the tumor and the bone erosion of the maxilla were suggestive of a malignant tumor. However, with preoperative magnetic resonance imaging (MRI) and [18F]-2-fluoro-2-deoxy-D-glucose positron emission tomography imaging findings, we established the corrective diagnosis of an angiomatous polyp. After the diagnostic imaging, we performed an endoscopic endonasal surgery and totally resected the tumor without unnecessary excessive surgery. Recognition of this disease that can mimic malignancy is important to avoid excessive surgery such as en bloc resection by craniofacial approach, and we believe that MRI findings can be helpful for the imaging diagnosis.
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Affiliation(s)
| | - Masahiro Kikuchi
- Otolaryngology, Head and Neck Surgery, Graduate School of Medicine, Kyoto University, Kyoto, JPN
| | - Sho Koyasu
- Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, Kyoto, JPN
| | - Yuji Kitada
- Otolaryngology, Head and Neck Surgery, Graduate School of Medicine, Kyoto University, Kyoto, JPN
| | | | - Hironori Haga
- Diagnostic Pathology, Kyoto University Hospital, Kyoto, JPN
| | - Yuji Nakamoto
- Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, Kyoto, JPN
| | - Takayuki Nakagawa
- Otolaryngology, Head and Neck Surgery, Graduate School of Medicine, Kyoto University, Kyoto, JPN
| | - Koichi Omori
- Otolaryngology, Head and Neck Surgery, Graduate School of Medicine, Kyoto University, Kyoto, JPN
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22
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Sakurada H, Koyasu S, Sugimoto A, Nakanishi E, Nakamoto Y. Diffuse Large B-cell Lymphoma: Unexpected Uptake Observed on Cardiac 123I-MIBG Scintigraphy. Clin Nucl Med 2021; 46:850-852. [PMID: 34034331 DOI: 10.1097/rlu.0000000000003737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
ABSTRACT A 77-year-old man with parkinsonism was referred to the department of neurology for further examination. Cardiac 123I-MIBG scintigraphy unexpectedly showed strong uptake in the left shoulder, suggestive of MIBG-avid tumors including paraganglioma. MRI revealed multiple nodules suggestive of lymphoma. A biopsy was performed, which led to the pathological diagnosis of diffuse large B-cell lymphoma. Cardiac MIBG scintigraphy sometimes shows unexpected findings outside the mediastinum. In addition, lymphoma should also be added to the list of differential diagnoses for MIBG-positive tumors.
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Affiliation(s)
- Hiroki Sakurada
- From the Departments of Diagnostic Imaging and Nuclear Medicine
| | - Sho Koyasu
- From the Departments of Diagnostic Imaging and Nuclear Medicine
| | | | - Etsuro Nakanishi
- Neurology, Graduate School of Medicine, Kyoto University, Kyoto City, Japan
| | - Yuji Nakamoto
- From the Departments of Diagnostic Imaging and Nuclear Medicine
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23
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Nishio M, Koyasu S, Noguchi S, Kiguchi T, Nakatsu K, Akasaka T, Yamada H, Itoh K. Automatic detection of acute ischemic stroke using non-contrast computed tomography and two-stage deep learning model. Comput Methods Programs Biomed 2020; 196:105711. [PMID: 32858281 DOI: 10.1016/j.cmpb.2020.105711] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 08/11/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND AND OBJECTIVE Currently, it is challenging to detect acute ischemic stroke (AIS)-related changes on computed tomography (CT) images. Therefore, we aimed to develop and evaluate an automatic AIS detection system involving a two-stage deep learning model. METHODS We included 238 cases from two different institutions. AIS-related findings were annotated on each of the 238 sets of head CT images by referring to head magnetic resonance imaging (MRI) images in which an MRI examination was performed within 24 h following the CT scan. These 238 annotated cases were divided into a training set including 189 cases and test set including 49 cases. Subsequently, a two-stage deep learning detection model was constructed from the training set using the You Only Look Once v3 model and Visual Geometry Group 16 classification model. Then, the two-stage model performed the AIS detection process in the test set. To assess the detection model's results, a board-certified radiologist also evaluated the test set head CT images with and without the aid of the detection model. The sensitivity of AIS detection and number of false positives were calculated for the evaluation of the test set detection results. The sensitivity of the radiologist with and without the software detection results was compared using the McNemar test. A p-value of less than 0.05 was considered statistically significant. RESULTS For the two-stage model and radiologist without and with the use of the software results, the sensitivity was 37.3%, 33.3%, and 41.3%, respectively, and the number of false positives per one case was 1.265, 0.327, and 0.388, respectively. On using the two-stage detection model's results, the board-certified radiologist's detection sensitivity significantly improved (p-value = 0.0313). CONCLUSIONS Our detection system involving the two-stage deep learning model significantly improved the radiologist's sensitivity in AIS detection.
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Affiliation(s)
- Mizuho Nishio
- Department of Radiology, Kobe University Hospital, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan.
| | - Sho Koyasu
- Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8904, Japan; Department of Diagnostic Radiology, Ichinomiya Nishi Hospital, 1-Hira Kaimei, Ichinomiya, Aichi 494-0001, Japan
| | - Shunjiro Noguchi
- Department of Radiology, Osaka Red Cross Hospital, 5-30 Fudegasakicho, Tennoji-ku, Osaka 543-8555, Japan
| | - Takao Kiguchi
- Department of Diagnostic Radiology, Ichinomiya Nishi Hospital, 1-Hira Kaimei, Ichinomiya, Aichi 494-0001, Japan
| | - Kanako Nakatsu
- Department of Radiology, Osaka Red Cross Hospital, 5-30 Fudegasakicho, Tennoji-ku, Osaka 543-8555, Japan
| | - Thai Akasaka
- Department of Radiology, Osaka Red Cross Hospital, 5-30 Fudegasakicho, Tennoji-ku, Osaka 543-8555, Japan
| | - Hiroki Yamada
- Department of Diagnostic Radiology, Ichinomiya Nishi Hospital, 1-Hira Kaimei, Ichinomiya, Aichi 494-0001, Japan
| | - Kyo Itoh
- Department of Radiology, Osaka Red Cross Hospital, 5-30 Fudegasakicho, Tennoji-ku, Osaka 543-8555, Japan
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24
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Hamaji M, Koyasu S, Omasa M, Nakakura A, Morita S, Nakagawa T, Miyahara S, Miyata R, Yokoyama Y, Kawakami K, Suga M, Takahashi M, Terada Y, Muranishi Y, Miyahara R, Sumitomo R, Huang CL, Aoyama A, Takahashi Y, Date H. Are volume-dependent parameters in positron emission tomography predictive of postoperative recurrence after resection in patients with thymic carcinoma? Surg Today 2020; 51:322-326. [PMID: 32535710 DOI: 10.1007/s00595-020-02045-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 06/02/2020] [Indexed: 10/24/2022]
Abstract
This study aimed to investigate the association between the volume-dependent parameters in 18F-fluorodeoxyglucose-positron emission tomography (18F-FDG PET/CT) and a recurrence of thymic carcinoma. A retrospective chart review was performed based on our multi-institutional database to identify patients undergoing PET prior to resection of thymic carcinoma or neuroendocrine carcinoma between 1991 and 2018. The PET parameters (metabolic tumor volume and total lesion glycolysis) were evaluated retrospectively. The relevant factors were extracted and a survival analysis was performed using the Kaplan-Meier method. Sixteen patients were thus deemed to be eligible for analysis. The median follow-up period following resection was 2.65 years (range: 0.96-0.68 years). The recurrence-free survival was significantly longer in patients with a metabolic tumor volume < = 22.755 cm3 and with total lesion glycolysis < = 105.4006 g/mL (p = 0.001 and 0.001, respectively, by a log-rank test). The metabolic tumor volume and total lesion glycolysis may, therefore, be predictive of the postoperative recurrence of thymic carcinoma.
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Affiliation(s)
- Masatsugu Hamaji
- Department of Thoracic Surgery, Kyoto University Hospital, 54 Kawahara-cho, Sakyo-ku, Kyoto, 604-0984, Japan.
| | - Sho Koyasu
- Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Hospital, Kyoto, Japan
| | - Mitsugu Omasa
- Department of Thoracic Surgery, Nishi Kobe Medical Center, Kobe, Japan
| | - Akiyoshi Nakakura
- Department of Biomedical Statistics and Bioinformatics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Satoshi Morita
- Department of Biomedical Statistics and Bioinformatics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Tatsuo Nakagawa
- Department of Thoracic Surgery, Tenri Hospital, Embu, Tenri, Japan
| | - So Miyahara
- Department of Thoracic Surgery, Fukuoka University Hospital, Fukuoka, Japan
| | - Ryo Miyata
- Department of Thoracic Surgery, Kyoto University Hospital, 54 Kawahara-cho, Sakyo-ku, Kyoto, 604-0984, Japan
| | - Yuhei Yokoyama
- Department of Thoracic Surgery, Kyoto University Hospital, 54 Kawahara-cho, Sakyo-ku, Kyoto, 604-0984, Japan
| | - Kenzo Kawakami
- Department of Thoracic Surgery, Shiga General Hospital, Moriyama, Japan
| | - Michiharu Suga
- Department of Thoracic Surgery, Takatsuki Red Cross Hospital, Takatsuki, Japan
| | - Mamoru Takahashi
- Department of Thoracic Surgery, Kyoto-Katsura Hospital, Kyoto, 615-8256, Japan
| | - Yasuji Terada
- Department of Thoracic Surgery, Kyoto-Katsura Hospital, Kyoto, 615-8256, Japan
| | - Yusuke Muranishi
- Department of Thoracic Surgery, Kyoto City Hospital, Kyoto, Japan
| | - Ryo Miyahara
- Department of Thoracic Surgery, Kyoto City Hospital, Kyoto, Japan
| | - Ryota Sumitomo
- Department of Thoracic Surgery, Kitano Hospital, Osaka, Japan
| | | | - Akihiro Aoyama
- Department of General Thoracic Surgery, Kobe City Medical Centre General Hospital, Kobe, Japan
| | - Yutaka Takahashi
- Department of General Thoracic Surgery, Kobe City Medical Centre General Hospital, Kobe, Japan
| | - Hiroshi Date
- Department of Thoracic Surgery, Kyoto University Hospital, 54 Kawahara-cho, Sakyo-ku, Kyoto, 604-0984, Japan
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25
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Nakanobo R, Hamaji M, Ohsumi A, Koyasu S, Yoshida H, Ozasa H, Isowa M, Nakajima N, Yoshizawa A, Date H. Paratracheal Middle Mediastinal Thymic Carcinomas. Ann Thorac Surg 2019; 110:e39-e41. [PMID: 31901463 DOI: 10.1016/j.athoracsur.2019.11.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 10/30/2019] [Accepted: 11/03/2019] [Indexed: 10/25/2022]
Abstract
We describe case studies of two patients who underwent resection of paratracheal middle mediastinal thymic carcinomas. In both patients, complete resection of these masses via right thoracotomy was performed using three-dimensional computed tomography. Final pathologic diagnoses were thymic squamous cell carcinoma and thymic atypical carcinoid tumor. Challenges and debates in preoperative, intraoperative, and postoperative management are discussed in this article.
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Affiliation(s)
- Ryo Nakanobo
- Department of Thoracic Surgery, Kyoto University Hospital, Kyoto, Japan
| | - Masatsugu Hamaji
- Department of Thoracic Surgery, Kyoto University Hospital, Kyoto, Japan.
| | - Akihiro Ohsumi
- Department of Thoracic Surgery, Kyoto University Hospital, Kyoto, Japan
| | - Sho Koyasu
- Department of Diagnostic Radiology, Kyoto University Hospital, Kyoto, Japan
| | - Hironori Yoshida
- Department of Pulmonary Medicine, Kyoto University Hospital, Kyoto, Japan
| | - Hiroaki Ozasa
- Department of Pulmonary Medicine, Kyoto University Hospital, Kyoto, Japan
| | - Masahide Isowa
- Department of Thoracic Surgery, Kyoto University Hospital, Kyoto, Japan
| | - Naoki Nakajima
- Department of Diagnostic Pathology, Kyoto University Hospital, Kyoto, Japan
| | - Akihiko Yoshizawa
- Department of Diagnostic Pathology, Kyoto University Hospital, Kyoto, Japan
| | - Hiroshi Date
- Department of Thoracic Surgery, Kyoto University Hospital, Kyoto, Japan
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26
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Koyasu S, Shimizu Y, Morinibu A, Saga T, Nakamoto Y, Togashi K, Harada H. Increased 14C-acetate accumulation in IDH-mutated human glioblastoma: implications for detecting IDH-mutated glioblastoma with 11C-acetate PET imaging. J Neurooncol 2019; 145:441-447. [PMID: 31667733 DOI: 10.1007/s11060-019-03322-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 10/25/2019] [Indexed: 12/16/2022]
Abstract
PURPOSE Recently, the potential value of isocitrate dehydrogenase (IDH) mutation as a prognostic marker in glioblastomas has been established. Glioblastomas are classified by their IDH mutation status under the 2016 WHO classification system. However, noninvasive diagnostic methods for the mutation status in glioblastoma patients have not been established so far. The purpose of this study was to evaluate the difference of acetate metabolism between in glioblastomas with wild-type IDH and in those with IDH mutation by comparing the uptake of 14C-acetate using genetically engineered glioblastoma cell lines in vitro and in vivo. METHODS We established glioblastoma cells (U251) expressing IDH1 R132H and examined the cell uptake of [1-14C]acetate. Biodistribution studies and an autoradiographic study for U251 cell tumor-bearing mice (BALB/c-nu/nu) with or without the IDH1 mutation were performed 1 h after [1-14C]acetate administration. RESULTS Significantly higher uptake of [1-14C]acetate was observed in U251/IDH1 R132H cells than in U251/IDH1 wild-type cells both in vitro (10.11 ± 0.94 vs. 4.26 ± 0.95%dose/mg, p = 0.0047) and in vivo (0.97 ± 0.14 vs. 0.66 ± 0.05%ID/g; p = 0.0037). Tumor-to-muscle ratios were also significantly higher in U251/IDH1 R132H tumors (3.36 ± 0.41 vs. 1.88 ± 0.59, p = 0.0030). The autoradiographic study shows the entirely higher radioactivity of the U251/IDH1 R132H tumor tissue section than that of the U251/IDH1 Wild-type tumor. CONCLUSIONS In vitro and in vivo studies demonstrated that the uptake of radiolabeled acetate was significantly higher in IDH-mutated cells than in IDH-wild-type cells.
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Affiliation(s)
- Sho Koyasu
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan. .,Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan. .,Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8904, Japan.
| | - Yoichi Shimizu
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Akiyo Morinibu
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Tsuneo Saga
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Yuji Nakamoto
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Kaori Togashi
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Hiroshi Harada
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan
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27
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Koyasu S, Nishio M, Isoda H, Nakamoto Y, Togashi K. Usefulness of gradient tree boosting for predicting histological subtype and EGFR mutation status of non-small cell lung cancer on 18F FDG-PET/CT. Ann Nucl Med 2019; 34:49-57. [PMID: 31659591 DOI: 10.1007/s12149-019-01414-0] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 10/11/2019] [Indexed: 01/19/2023]
Abstract
OBJECTIVE To develop and evaluate a radiomics approach for classifying histological subtypes and epidermal growth factor receptor (EGFR) mutation status in lung cancer on PET/CT images. METHODS PET/CT images of lung cancer patients were obtained from public databases and used to establish two datasets, respectively to classify histological subtypes (156 adenocarcinomas and 32 squamous cell carcinomas) and EGFR mutation status (38 mutant and 100 wild-type samples). Seven types of imaging features were obtained from PET/CT images of lung cancer. Two types of machine learning algorithms were used to predict histological subtypes and EGFR mutation status: random forest (RF) and gradient tree boosting (XGB). The classifiers used either a single type or multiple types of imaging features. In the latter case, the optimal combination of the seven types of imaging features was selected by Bayesian optimization. Receiver operating characteristic analysis, area under the curve (AUC), and tenfold cross validation were used to assess the performance of the approach. RESULTS In the classification of histological subtypes, the AUC values of the various classifiers were as follows: RF, single type: 0.759; XGB, single type: 0.760; RF, multiple types: 0.720; XGB, multiple types: 0.843. In the classification of EGFR mutation status, the AUC values were: RF, single type: 0.625; XGB, single type: 0.617; RF, multiple types: 0.577; XGB, multiple types: 0.659. CONCLUSIONS The radiomics approach to PET/CT images, together with XGB and Bayesian optimization, is useful for classifying histological subtypes and EGFR mutation status in lung cancer.
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Affiliation(s)
- Sho Koyasu
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, Kyoto, 606-8507, Japan.,Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8904, Japan
| | - Mizuho Nishio
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, Kyoto, 606-8507, Japan. .,Preemptive Medicine and Lifestyle-related Disease Research Center, Kyoto University Hospital, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, Kyoto, 606-8507, Japan.
| | - Hiroyoshi Isoda
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, Kyoto, 606-8507, Japan.,Preemptive Medicine and Lifestyle-related Disease Research Center, Kyoto University Hospital, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, Kyoto, 606-8507, Japan
| | - Yuji Nakamoto
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, Kyoto, 606-8507, Japan
| | - Kaori Togashi
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, Kyoto, 606-8507, Japan
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28
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Nagao A, Kobayashi M, Koyasu S, Chow CCT, Harada H. HIF-1-Dependent Reprogramming of Glucose Metabolic Pathway of Cancer Cells and Its Therapeutic Significance. Int J Mol Sci 2019; 20:E238. [PMID: 30634433 PMCID: PMC6359724 DOI: 10.3390/ijms20020238] [Citation(s) in RCA: 258] [Impact Index Per Article: 51.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 12/27/2018] [Accepted: 12/30/2018] [Indexed: 12/20/2022] Open
Abstract
Normal cells produce adenosine 5'-triphosphate (ATP) mainly through mitochondrial oxidative phosphorylation (OXPHOS) when oxygen is available. Most cancer cells, on the other hand, are known to produce energy predominantly through accelerated glycolysis, followed by lactic acid fermentation even under normoxic conditions. This metabolic phenomenon, known as aerobic glycolysis or the Warburg effect, is less efficient compared with OXPHOS, from the viewpoint of the amount of ATP produced from one molecule of glucose. However, it and its accompanying pathway, the pentose phosphate pathway (PPP), have been reported to provide advantages for cancer cells by producing various metabolites essential for proliferation, malignant progression, and chemo/radioresistance. Here, focusing on a master transcriptional regulator of adaptive responses to hypoxia, the hypoxia-inducible factor 1 (HIF-1), we review the accumulated knowledge on the molecular basis and functions of the Warburg effect and its accompanying pathways. In addition, we summarize our own findings revealing that a novel HIF-1-activating factor enhances the antioxidant capacity and resultant radioresistance of cancer cells though reprogramming of the glucose metabolic pathway.
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Affiliation(s)
- Ayako Nagao
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan.
| | - Minoru Kobayashi
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan.
| | - Sho Koyasu
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan.
- Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8904, Japan.
| | - Christalle C T Chow
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan.
| | - Hiroshi Harada
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan.
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29
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Hamaji M, Yamaguchi K, Koyasu S, Date H. Thoracoscopic Resection of Fluorodeoxyglucose-Avid Mediastinal Lymph Nodes Associated with Advanced Ovarian Carcinoma. Thorac Cardiovasc Surg 2018; 67:692-696. [PMID: 30086572 DOI: 10.1055/s-0038-1667325] [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: 10/28/2022]
Abstract
The indication for surgery is controversial in patients with advanced ovarian cancer and fluorodeoxyglucose (FDG)-avid mediastinal lymph nodes. Herein we report our experience in thoracoscopic resection of FDG-avid mediastinal lymph nodes associated with advanced ovarian cancer in six patients. No perioperative or long-term mortality was noted. FDG-avid mediastinal lymph nodes in advanced ovarian carcinoma may merit thoracoscopic resection with histological confirmation for more precise staging.
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Affiliation(s)
- Masatsugu Hamaji
- Department of Thoracic Surgery, Kyoto University Hospital, Kyoto, Japan
| | - Ken Yamaguchi
- Department of Obstetrics and Gynecology, Kyoto University Hospital, Kyoto, Japan
| | - Sho Koyasu
- Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Hospital, Kyoto, Japan
| | - Hiroshi Date
- Department of Thoracic Surgery, Kyoto University Hospital, Kyoto, Japan
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30
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Nomura H, Takahashi H, Kase Y, Yamagami J, Wada N, Koyasu S, Amagai M. 017 FcγRIIb deficiency accelerates immunoglobulin class switch and pemphigus phenotype development in pathogenic anti-desmoglein 3 antibody knock-in mice. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.021] [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: 10/17/2022]
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31
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Iima M, Kataoka M, Kanao S, Kawai M, Onishi N, Koyasu S, Murata K, Ohashi A, Sakaguchi R, Togashi K. Variability of non-Gaussian diffusion MRI and intravoxel incoherent motion (IVIM) measurements in the breast. PLoS One 2018; 13:e0193444. [PMID: 29494639 PMCID: PMC5832256 DOI: 10.1371/journal.pone.0193444] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 02/12/2018] [Indexed: 01/12/2023] Open
Abstract
We prospectively examined the variability of non-Gaussian diffusion magnetic resonance imaging (MRI) and intravoxel incoherent motion (IVIM) measurements with different numbers of b-values and excitations in normal breast tissue and breast lesions. Thirteen volunteers and fourteen patients with breast lesions (seven malignant, eight benign; one patient had bilateral lesions) were recruited in this prospective study (approved by the Internal Review Board). Diffusion-weighted MRI was performed with 16 b-values (0–2500 s/mm2 with one number of excitations [NEX]) and five b-values (0–2500 s/mm2, 3 NEX), using a 3T breast MRI. Intravoxel incoherent motion (flowing blood volume fraction [fIVIM] and pseudodiffusion coefficient [D*]) and non-Gaussian diffusion (theoretical apparent diffusion coefficient [ADC] at b value of 0 sec/mm2 [ADC0] and kurtosis [K]) parameters were estimated from IVIM and Kurtosis models using 16 b-values, and synthetic apparent diffusion coefficient (sADC) values were obtained from two key b-values. The variabilities between and within subjects and between different diffusion acquisition methods were estimated. There were no statistical differences in ADC0, K, or sADC values between the different b-values or NEX. A good agreement of diffusion parameters was observed between 16 b-values (one NEX), five b-values (one NEX), and five b-values (three NEX) in normal breast tissue or breast lesions. Insufficient agreement was observed for IVIM parameters. There were no statistical differences in the non-Gaussian diffusion MRI estimated values obtained from a different number of b-values or excitations in normal breast tissue or breast lesions. These data suggest that a limited MRI protocol using a few b-values might be relevant in a clinical setting for the estimation of non-Gaussian diffusion MRI parameters in normal breast tissue and breast lesions.
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Affiliation(s)
- Mami Iima
- Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
- The Hakubi Center for Advanced Research, Kyoto University, Kyoto, Japan
- * E-mail:
| | - Masako Kataoka
- Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Shotaro Kanao
- Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Makiko Kawai
- Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Natsuko Onishi
- Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Sho Koyasu
- Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | | | - Akane Ohashi
- Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Rena Sakaguchi
- Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Kaori Togashi
- Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
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32
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Koyasu S, Kobayashi M, Goto Y, Hiraoka M, Harada H. Regulatory mechanisms of hypoxia-inducible factor 1 activity: Two decades of knowledge. Cancer Sci 2018; 109:560-571. [PMID: 29285833 PMCID: PMC5834787 DOI: 10.1111/cas.13483] [Citation(s) in RCA: 133] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 12/09/2017] [Accepted: 12/24/2017] [Indexed: 12/12/2022] Open
Abstract
Hypoxia‐inducible factor 1 (HIF‐1) is a transcriptional activator of various genes related to cellular adaptive responses to hypoxia. Dysfunctions in the regulatory systems of HIF‐1 activity have been implicated in the pathogenesis of various diseases including malignant tumors and, thus, elucidating the molecular mechanisms underlying the activation of HIF‐1 is eagerly desired for the development of novel anti‐cancer strategies. The importance of oxygen‐dependent and ubiquitin‐mediated proteolysis of the regulatory subunit of HIF‐1 (HIF‐1α) was first reported in 1997. Since then, accumulating evidence has shown that HIF‐1α may become stable and active even under normoxic conditions; for example, when disease‐associated genetic and functional alterations in some genes trigger the aberrant activation of HIF‐1 regardless of oxygen conditions. We herein review the last two decades of knowledge, since 1997, on the regulatory mechanisms of HIF‐1 activity from conventional oxygen‐ and proteolysis‐dependent mechanisms to up‐to‐the‐minute information on cancer‐associated genetic and functional alteration‐mediated mechanisms.
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Affiliation(s)
- Sho Koyasu
- Laboratory of Cancer Cell Biology, Department of Genome Dynamics, Radiation Biology Center, Kyoto University, Kyoto, Japan.,Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan
| | - Minoru Kobayashi
- Laboratory of Cancer Cell Biology, Department of Genome Dynamics, Radiation Biology Center, Kyoto University, Kyoto, Japan
| | - Yoko Goto
- Department of Radiation Oncology and Image-applied Therapy, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Masahiro Hiraoka
- Department of Radiation Oncology and Image-applied Therapy, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Hiroshi Harada
- Laboratory of Cancer Cell Biology, Department of Genome Dynamics, Radiation Biology Center, Kyoto University, Kyoto, Japan.,Precursory Research for Embryonic Science and Technology, Japan Science and Technology Agency (JST), Saitama, Japan
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Watanabe M, Nakamoto Y, Koyasu S, Ishimori T, Yasoda A, Togashi K. The influence of elevated hormone levels on physiologic accumulation of 68Ga-DOTATOC. Ann Nucl Med 2018; 32:191-196. [PMID: 29349562 DOI: 10.1007/s12149-018-1233-4] [Citation(s) in RCA: 3] [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: 12/13/2017] [Accepted: 01/16/2018] [Indexed: 11/29/2022]
Abstract
OBJECTIVE PET/CT imaging with 68Ga-1,4,7,10-tetraazacyclododecane-N,N',N″,N‴-tetraacetic acid-D-Phe1-Tyr3-octreotide (DOTATOC) is useful in patients with neuroendocrine tumors (NETs). Functioning NETs by definition secrete abnormal levels of hormones, causing clinical symptoms. It is known that physiologic accumulation can be seen in some organs, but it remains unknown whether elevated hormone levels can affect the physiologic accumulation pattern of 68Ga-DOTATOC. We aimed to investigate the influence of higher hormone levels on physiologic accumulation of 68Ga-DOTATOC. METHODS A total of 167 patients with known or suspected NET lesions were enrolled in this study. The numbers of patients with elevations of ACTH, gastrin, insulin, and no elevation were 10, 25, 7, and 125, respectively. We compared the maximum standardized uptake value (SUVmax) in various organs of each group. RESULTS In the group with elevated ACTH levels, SUVmax in the pituitary gland, the uncinate process of the pancreas and adrenal glands was lower than those in the group with no elevation (5.7 ± 1.9 vs. 8.4 ± 3.1, P = 0.015; 4.7 ± 3.5 vs. 6.4 ± 2.8, P = 0.037; 10.8 ± 4.8 vs. 13.9 ± 4.7, P = 0.020, respectively). There were no differences in physiologic uptake of 68Ga-DOTATOC in the thyroid gland, the pancreatic body, the liver, the spleen, the bowel, or the kidney. CONCLUSIONS In NET patients with elevated ACTH levels, physiologic uptake of 68Ga-DOTATOC in the pituitary gland, the uncinate process of the pancreas and adrenal glands was significantly decreased. Other organs were unaffected.
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Affiliation(s)
- Masao Watanabe
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, 54 Shogoinkawahara-cho, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Yuji Nakamoto
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, 54 Shogoinkawahara-cho, Sakyo-Ku, Kyoto, 606-8507, Japan.
| | - Sho Koyasu
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, 54 Shogoinkawahara-cho, Sakyo-Ku, Kyoto, 606-8507, Japan.,Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo, 153-0041, Japan
| | - Takayoshi Ishimori
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, 54 Shogoinkawahara-cho, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Akihiro Yasoda
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, 54 Shogoinkawahara-cho, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Kaori Togashi
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, 54 Shogoinkawahara-cho, Sakyo-Ku, Kyoto, 606-8507, Japan
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Iima M, Nobashi T, Imai H, Koyasu S, Saga T, Nakamoto Y, Kataoka M, Yamamoto A, Matsuda T, Togashi K. Effects of diffusion time on non-Gaussian diffusion and intravoxel incoherent motion (IVIM) MRI parameters in breast cancer and hepatocellular carcinoma xenograft models. Acta Radiol Open 2018; 7:2058460117751565. [PMID: 29372076 PMCID: PMC5774737 DOI: 10.1177/2058460117751565] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 12/10/2017] [Indexed: 12/30/2022] Open
Abstract
Background Perfusion-related intravoxel incoherent motion (IVIM) and non-Gaussian diffusion magnetic resonance (MR) parameters are becoming important biomarkers for differentiating malignant from benign tumors without contrast agents. However, diffusion-time dependence has rarely been investigated in tumors. Purpose To investigate the relationship between diffusion time and diffusion parameters in breast cancer and hepatocellular carcinoma xenograft mouse models. Material and Methods Diffusion-weighted MR images (DWI) were obtained on a 7-T magnetic resonance imaging (MRI) scanner at two different diffusion times (9.6 ms and 27.6 ms) in human breast cancer (MDA-MB-231) and hepatocellular carcinoma (HepG2 and PLC/PRF/5) xenograft mouse models. Perfusion-related IVIM (fIVIM and D*) and non-Gaussian diffusion (ADC0 and K) parameters were estimated. Parametric maps of diffusion changes with the diffusion times were generated using a synthetic apparent diffusion coefficient (sADC) obtained from b = 438 and 2584 s/mm2. Results ADC0 values significantly decreased when diffusion times were changed from 9.6 ms to 27.6 ms in MDA-MB-231, HepG2, and PLC/PRF/5 groups (P = 0.0163, 0.0351, and 0.0170, respectively). K values significantly increased in MDA-MB-231 and HepG2 groups (P < 0.0003 and = 0.0007, respectively); however, no significant difference was detected in the PLC/PRF/5 group. fIVIM values increased, although not significantly (P = 0.164–0.748). The maps of sADC changes showed that diffusion changes with the diffusion time were not homogeneous across tumor tissues. Conclusion Diffusion MR parameters in both breast cancer and HCC xenograft models were found to be diffusion time-dependent. Our results show that diffusion time is an important parameter to consider when interpreting DWI data.
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Affiliation(s)
- Mami Iima
- Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan.,The Hakubi Center for Advanced Research, Kyoto University, Kyoto, Japan
| | - Tomomi Nobashi
- Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Hirohiko Imai
- Division of Systems Informatics, Department of Systems Science, Kyoto University Graduate School of Informatics, Kyoto, Japan
| | - Sho Koyasu
- Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan.,Laboratory of Cancer Cell Biology, Department of Genome Dynamics, Radiation Biology Center, Kyoto University, Kyoto, Japan.,Research Center for Advanced Science and Technology, Tokyo University, Tokyo, Japan
| | - Tsuneo Saga
- Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yuji Nakamoto
- Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Masako Kataoka
- Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Akira Yamamoto
- Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Tetsuya Matsuda
- Division of Systems Informatics, Department of Systems Science, Kyoto University Graduate School of Informatics, Kyoto, Japan
| | - Kaori Togashi
- Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
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Kobayashi M, Morinibu A, Koyasu S, Goto Y, Hiraoka M, Harada H. A circadian clock gene, PER2, activates HIF-1 as an effector molecule for recruitment of HIF-1α to promoter regions of its downstream genes. FEBS J 2017; 284:3804-3816. [PMID: 28963769 DOI: 10.1111/febs.14280] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Revised: 08/29/2017] [Accepted: 09/25/2017] [Indexed: 12/23/2022]
Abstract
Hypoxia-inducible factor 1 (HIF-1) is a transcription factor functioning in cellular adaptive responses to hypoxia. Recent studies have suggested that HIF-1 activity is upregulated by one of the important circadian clock genes, period circadian clock 2 (PER2); however, its underlying mechanism remains unclear. Here, we show that PER2 functions as an effector protein for the recruitment of HIF-1α to its cognate enhancer sequence, the hypoxia-response element (HRE). We found that the forced expression of PER2 enhanced HIF-1 activity without influencing expression levels of the regulatory subunit of HIF-1, HIF-1α, at either mRNA or protein levels. A series of coimmunoprecipitation-based experiments revealed that PER2 interacted with HIF-1α and facilitated the recruitment of HIF-1α to HRE derived from vascular endothelial growth factor (VEGF) promoter. The PER2-mediated activation of HIF-1 was observed only when the asparagine residue at position 803 of HIF-1α (HIF-1α N803) was kept unhydroxylated by hypoxic stimulation, by introducing an N803A point mutation, or by an inhibitor of N803-dioxygenase, deferoxamine. However, the extent of PER-2-HIF-1α interaction was equivalent regardless of the N803 hydroxylation status. Taken together, these results suggest that, with the help of an unknown sensor molecule for the N803 hydroxylation status, PER2 functions as an effector molecule for the recruitment of HIF-1 to promoter regions of its downstream genes. Our findings reveal a novel regulatory step in the activation of HIF-1, which can be targeted to develop therapeutic strategies against HIF-1-related diseases, such as cancers.
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Affiliation(s)
- Minoru Kobayashi
- Laboratory of Cancer Cell Biology, Department of Genome Dynamics, Radiation Biology Center, Kyoto University, Japan
| | - Akiyo Morinibu
- Laboratory of Cancer Cell Biology, Department of Genome Dynamics, Radiation Biology Center, Kyoto University, Japan
| | - Sho Koyasu
- Laboratory of Cancer Cell Biology, Department of Genome Dynamics, Radiation Biology Center, Kyoto University, Japan.,Research Center for Advanced Science and Technology, The University of Tokyo, Japan
| | - Yoko Goto
- Department of Radiation Oncology and Image-applied Therapy, Kyoto University Graduate School of Medicine, Japan
| | - Masahiro Hiraoka
- Department of Radiation Oncology and Image-applied Therapy, Kyoto University Graduate School of Medicine, Japan.,Japan Red Cross Society Wakayama Medical Center, Japan
| | - Hiroshi Harada
- Laboratory of Cancer Cell Biology, Department of Genome Dynamics, Radiation Biology Center, Kyoto University, Japan.,Precursory Research for Embryonic Science and Technology, Japan Science and Technology Agency (JST), Kawaguchi, Japan
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Tsuji Y, Takahashi N, Isoda H, Koizumi K, Koyasu S, Sekimoto M, Imanaka Y, Yazumi S, Asada M, Nishikawa Y, Yamamoto H, Kikuchi O, Yoshida T, Inokuma T, Katsushima S, Esaka N, Okano A, Kawanami C, Kakiuchi N, Shiokawa M, Kodama Y, Moriyama I, Kajitani T, Kinoshita Y, Chiba T. Erratum to: Early diagnosis of pancreatic necrosis based on perfusion CT to predict the severity of acute pancreatitis. J Gastroenterol 2017; 52:1147-1148. [PMID: 28447174 DOI: 10.1007/s00535-017-1343-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Yoshihisa Tsuji
- Department of Gastroenterology and Hepatology, Kyoto University Hospital, Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan.
- Department of Gastroenterology and Hepatology, The Japan Baptist Hospital, 47 Kitashirakawa Yamanomotocho, Sakyo-ku, Kyoto, 606-8273, Japan.
- Shiga University of Medical Science, Seta-Tsukinowacho, Otsu, Shiga, 520-2121, Japan.
| | - Naoki Takahashi
- Department of Radiology, Mayo Clinic, 200 1st St SW, Rochester, MN, 55902, USA
| | - Hiroyoshi Isoda
- Department of Radiology, Kyoto University Hospital, Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Koji Koizumi
- Division of Clinical Radiology Service, Kyoto University Hospital, Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Sho Koyasu
- Department of Radiology, Kyoto University Hospital, Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Miho Sekimoto
- Department of Healthcare Economics and Quality Management, Kyoto University Hospital, Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Yuichi Imanaka
- Department of Healthcare Economics and Quality Management, Kyoto University Hospital, Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Shujiro Yazumi
- Digestive Disease Center, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, 2-4-20 Ohgimachi, Kita-ku, Osaka, 530-8480, Japan
| | - Masanori Asada
- Digestive Disease Center, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, 2-4-20 Ohgimachi, Kita-ku, Osaka, 530-8480, Japan
| | - Yoshihiro Nishikawa
- Digestive Disease Center, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, 2-4-20 Ohgimachi, Kita-ku, Osaka, 530-8480, Japan
| | - Hiroshi Yamamoto
- Department of Gastroenterology and Hepatology, 1 Chome-1-1 Miwa, Kurashiki, Okayama, 710-0052, Japan
| | - Osamu Kikuchi
- Department of Gastroenterology and Hepatology, 1 Chome-1-1 Miwa, Kurashiki, Okayama, 710-0052, Japan
| | - Tsukasa Yoshida
- Department of Gastroenterology and Hepatology, 1 Chome-1-1 Miwa, Kurashiki, Okayama, 710-0052, Japan
| | - Tetsuro Inokuma
- Department of Gastroenterology and Hepatology, Kobe City Medical Center General Hospital, 2-2-1 Minatojima-minami-machi, Chuo-ku, Kobe, Hyogo, 650-0047, Japan
| | - Shinji Katsushima
- Department of Gastroenterology and Hepatology, Kyoto Medical Center, 1-1 Fukakusa, Mukaihata-cho, Fushimi-ku, Kyoto, 612-8555, Japan
| | - Naoki Esaka
- Department of Gastroenterology and Hepatology, Kyoto Medical Center, 1-1 Fukakusa, Mukaihata-cho, Fushimi-ku, Kyoto, 612-8555, Japan
| | - Akihiro Okano
- Department of Gastroenterology and Hepatology, Tenri Hospital, 200 Mishima-cho, Tenri, Nara, 632-8552, Japan
| | - Chiharu Kawanami
- Department of Gastroenterology and Hepatology, Japanese Red Cross Otsu Hospital, 1-1-35 Nagara, Otsu, Shiga, 520-8511, Japan
| | - Nobuyuki Kakiuchi
- Department of Gastroenterology and Hepatology, Japanese Red Cross Otsu Hospital, 1-1-35 Nagara, Otsu, Shiga, 520-8511, Japan
| | - Masahiro Shiokawa
- Department of Gastroenterology and Hepatology, Japanese Red Cross Otsu Hospital, 1-1-35 Nagara, Otsu, Shiga, 520-8511, Japan
| | - Yuzo Kodama
- Department of Gastroenterology and Hepatology, Kyoto University Hospital, Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Ichiro Moriyama
- Division of Clinical Study of Oncology, Shimane University School of Medicine, 1060 Nishikawatsucho, Matsue, Shimane, 690-8504, Japan
| | - Takafumi Kajitani
- Department of Radiology, Shimane University School of Medicine, 1060 Nishikawatsucho, Matsue, Shimane, 690-8504, Japan
| | - Yoshikazu Kinoshita
- Department of Gastroenterology and Hepatology, Shimane University School of Medicine, 1060 Nishikawatsucho, Matsue, Shimane, 690-8504, Japan
| | - Tsutomu Chiba
- Department of Gastroenterology and Hepatology, Kyoto University Hospital, Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
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37
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Tsuji Y, Takahashi N, Isoda H, Koizumi K, Koyasu S, Sekimoto M, Imanaka Y, Yazumi S, Asada M, Nishikawa Y, Yamamoto H, Kikuchi O, Yoshida T, Inokuma T, Katsushima S, Esaka N, Okano A, Kawanami C, Kakiuchi N, Shiokawa M, Kodama Y, Moriyama I, Kajitani T, Kinoshita Y, Chiba T. Early diagnosis of pancreatic necrosis based on perfusion CT to predict the severity of acute pancreatitis. J Gastroenterol 2017; 52:1130-1139. [PMID: 28374057 DOI: 10.1007/s00535-017-1330-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Accepted: 03/14/2017] [Indexed: 02/08/2023]
Abstract
BACKGROUND Perfusion CT can diagnose pancreatic necrosis in early stage of severe acute pancreatitis, accurately. However, no study to date has examined whether early diagnosis of pancreatic necrosis is useful in predicting persistent organ failure (POF). METHODS We performed a multi-center prospective observational cohort study to investigate whether perfusion CT can predict the development of POF in the early stage of AP, based on early diagnosis of the development of pancreatic necrosis (PN). From 2009 to 2012, we examined patients showing potential early signs of severe AP (n = 78) on admission. Diagnoses for the development of PN were made prospectively by on-site physicians on the admission based on perfusion CT (diagnosis 1). Blinded retrospective reviews were performed by radiologists A and B, having 8 and 13 years of experience as radiologists (diagnosis 2 and 3), respectively. Positive diagnosis for the development of PN were assumed equivalent to positive predictions for the development of POF. We then calculated the area under the curve (AUC) of the receiver operating characteristic for POF predictions. RESULTS Fourteen (17.9%) and 23 patients (29.5%) developed PN and POF, respectively. For diagnoses 1, 2, and 3, AUCs for POF predictions were 74, 68, and 73, respectively. CONCLUSIONS Perfusion CT diagnoses pancreatic necrosis and on that basis predicts the development of POF; http://www.umin.ac.jp/ctr/index-j.htm,UMIN000001926 .
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Affiliation(s)
- Yoshihisa Tsuji
- Department of Gastroenterology and Hepatology, Kyoto University Hospital, Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan. .,Department of Gastroenterology and Hepatology, The Japan Baptist Hospital, 47 Kitashirakawa Yamanomotocho, Sakyo-ku, Kyoto, 606-8273, Japan. .,Shiga University of Medical Science, Seta-Tsukinowacho, Otsu, Shiga, 520-2121, Japan.
| | - Naoki Takahashi
- Department of Radiology, Mayo Clinic, 200 1st St SW, Rochester, MN, 55902, USA
| | - Hiroyoshi Isoda
- Department of Radiology, Kyoto University Hospital, Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Koji Koizumi
- Division of Clinical Radiology Service, Kyoto University Hospital, Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Sho Koyasu
- Department of Radiology, Kyoto University Hospital, Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Miho Sekimoto
- Department of Healthcare Economics and Quality Management, Kyoto University Hospital, Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Yuichi Imanaka
- Department of Healthcare Economics and Quality Management, Kyoto University Hospital, Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Shujiro Yazumi
- Digestive Disease Center, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, 2-4-20 Ohgimachi, Kita-ku, Osaka, 530-8480, Japan
| | - Masanori Asada
- Digestive Disease Center, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, 2-4-20 Ohgimachi, Kita-ku, Osaka, 530-8480, Japan
| | - Yoshihiro Nishikawa
- Digestive Disease Center, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, 2-4-20 Ohgimachi, Kita-ku, Osaka, 530-8480, Japan
| | - Hiroshi Yamamoto
- Department of Gastroenterology and Hepatology, 1 Chome-1-1 Miwa, Kurashiki, Okayama, 710-0052, Japan
| | - Osamu Kikuchi
- Department of Gastroenterology and Hepatology, 1 Chome-1-1 Miwa, Kurashiki, Okayama, 710-0052, Japan
| | - Tsukasa Yoshida
- Department of Gastroenterology and Hepatology, 1 Chome-1-1 Miwa, Kurashiki, Okayama, 710-0052, Japan
| | - Tetsuro Inokuma
- Department of Gastroenterology and Hepatology, Kobe City Medical Center General Hospital, 2-2-1 Minatojima-minami-machi, Chuo-ku, Kobe, Hyogo, 650-0047, Japan
| | - Shinji Katsushima
- Department of Gastroenterology and Hepatology, Kyoto Medical Center, 1-1 Fukakusa, Mukaihata-cho, Fushimi-ku, Kyoto, 612-8555, Japan
| | - Naoki Esaka
- Department of Gastroenterology and Hepatology, Kyoto Medical Center, 1-1 Fukakusa, Mukaihata-cho, Fushimi-ku, Kyoto, 612-8555, Japan
| | - Akihiro Okano
- Department of Gastroenterology and Hepatology, Tenri Hospital, 200 Mishima-cho, Tenri, Nara, 632-8552, Japan
| | - Chiharu Kawanami
- Department of Gastroenterology and Hepatology, Japanese Red Cross Otsu Hospital, 1-1-35 Nagara, Otsu, Shiga, 520-8511, Japan
| | - Nobuyuki Kakiuchi
- Department of Gastroenterology and Hepatology, Japanese Red Cross Otsu Hospital, 1-1-35 Nagara, Otsu, Shiga, 520-8511, Japan
| | - Masahiro Shiokawa
- Department of Gastroenterology and Hepatology, Japanese Red Cross Otsu Hospital, 1-1-35 Nagara, Otsu, Shiga, 520-8511, Japan
| | - Yuzo Kodama
- Department of Gastroenterology and Hepatology, Kyoto University Hospital, Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Ichiro Moriyama
- Division of Clinical Study of Oncology, Shimane University School of Medicine, 1060 Nishikawatsucho, Matsue, Shimane, 690-8504, Japan
| | - Takafumi Kajitani
- Department of Radiology, Shimane University School of Medicine, 1060 Nishikawatsucho, Matsue, Shimane, 690-8504, Japan
| | - Yoshikazu Kinoshita
- Department of Gastroenterology and Hepatology, Shimane University School of Medicine, 1060 Nishikawatsucho, Matsue, Shimane, 690-8504, Japan
| | - Tsutomu Chiba
- Department of Gastroenterology and Hepatology, Kyoto University Hospital, Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
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Nakashima R, Goto Y, Koyasu S, Kobayashi M, Morinibu A, Yoshimura M, Hiraoka M, Hammond EM, Harada H. UCHL1-HIF-1 axis-mediated antioxidant property of cancer cells as a therapeutic target for radiosensitization. Sci Rep 2017; 7:6879. [PMID: 28761052 PMCID: PMC5537219 DOI: 10.1038/s41598-017-06605-1] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Accepted: 06/15/2017] [Indexed: 01/24/2023] Open
Abstract
Hypoxia-inducible factor 1 (HIF-1) has been recognized as an important mediator of the reprogramming of carbohydrate metabolic pathways from oxidative phosphorylation to accelerated glycolysis. Although this reprogramming has been associated with the antioxidant and radioresistant properties of cancer cells, gene networks triggering the HIF-1-mediated reprogramming and molecular mechanisms linking the reprogramming with radioresistance remain to be determined. Here, we show that Ubiquitin C-terminal hydrolase-L1 (UCHL1), which we previously identified as a novel HIF-1 activator, increased the radioresistance of cancer cells by producing an antioxidant, reduced glutathione (GSH), through HIF-1-mediated metabolic reprogramming. A luciferase assay to monitor HIF-1 activity demonstrated that the overexpression of UCHL1, but not its deubiquitination activity-deficient mutant (UCHL1 C90S), upregulated HIF-1 activity by stabilizing the regulatory subunit of HIF-1 (HIF-1α) in a murine breast cancer cell line, EMT6. UCHL1 overexpression induced the reprogramming of carbohydrate metabolism and increased NADPH levels in a pentose phosphate pathway (PPP)-dependent manner. The UCHL1-mediated reprogramming elevated intracellular GSH levels, and consequently induced a radioresistant phenotype in a HIF-1-dependent manner. The pharmacological inhibition of PPP canceled the UCHL1-mediated radioresistance. These results collectively suggest that cancer cells acquire antioxidant and radioresistant phenotypes through UCHL1-HIF-1-mediated metabolic reprogramming including the activation of PPP and provide a rational basis for targeting this gene network for radiosensitization.
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Affiliation(s)
- Ryota Nakashima
- Department of Radiation Oncology and Image-applied Therapy, Kyoto University Graduate School of Medicine, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
- Laboratory of Cancer Cell Biology, Department of Genome Dynamics, Radiation Biology Center, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Yoko Goto
- Department of Radiation Oncology and Image-applied Therapy, Kyoto University Graduate School of Medicine, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan.
| | - Sho Koyasu
- Laboratory of Cancer Cell Biology, Department of Genome Dynamics, Radiation Biology Center, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Minoru Kobayashi
- Laboratory of Cancer Cell Biology, Department of Genome Dynamics, Radiation Biology Center, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Akiyo Morinibu
- Laboratory of Cancer Cell Biology, Department of Genome Dynamics, Radiation Biology Center, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Michio Yoshimura
- Department of Radiation Oncology and Image-applied Therapy, Kyoto University Graduate School of Medicine, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Masahiro Hiraoka
- Department of Radiation Oncology and Image-applied Therapy, Kyoto University Graduate School of Medicine, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Ester M Hammond
- CRUK/MRC Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Oxford, OX3 7DQ, United Kingdom
| | - Hiroshi Harada
- Department of Radiation Oncology and Image-applied Therapy, Kyoto University Graduate School of Medicine, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
- Laboratory of Cancer Cell Biology, Department of Genome Dynamics, Radiation Biology Center, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan
- Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology (JST), 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan
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39
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Goto Y, Koyasu S, Kobayashi M, Harada H. The emerging roles of the ubiquitination/deubiquitination system in tumor radioresistance regarding DNA damage responses, cell cycle regulation, hypoxic responses, and antioxidant properties: Insight into the development of novel radiosensitizing strategies. Mutat Res 2017; 803-805:76-81. [PMID: 28778421 DOI: 10.1016/j.mrfmmm.2017.07.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 07/02/2017] [Accepted: 07/17/2017] [Indexed: 10/19/2022]
Abstract
Radiation therapy is one of the first-line treatments for many cancers, with no less than half of cancer patients receiving it in the US. Despite the development of innovative and high-precision radiation therapy strategies, many patients still experience local tumor recurrence after the treatment, at least in part, due to the existence of radioresistant cells in malignant tumor tissues. Among the various biological processes known to induce radioresistance, a post-translational protein modification, ubiquitination, has received marked attention in recent years. Ubiquitination, in which highly conserved ubiquitin polypeptides are covalently attached to their target proteins, has long been recognized as a system to tag unnecessary proteins for 26S proteasome-dependent proteolysis. However, accumulating lines of evidence recently revealed that it acts as a signal molecule in diverse biological processes as well, and its functional disorder was found to cause not only tumor development and various diseases but also tumor radioresistance. The present review summarizes the latest knowledge about how the cancer-related disorder of the ubiquitination systems induces the radioresistance of cancer cells by influencing intrinsic pathways, each of which potentially affects the radioresistance/radiosensitivity of cells, such as DNA damage responses, cell cycle regulation, hypoxic responses, and antioxidant properties. In addition, this review aims to provide insights into how we can exploit the disorders in order to develop novel radiosensitizing strategies.
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Affiliation(s)
- Yoko Goto
- Department of Radiation Oncology and Image-applied Therapy, Kyoto University Graduate School of Medicine, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto 606-8507, Japan
| | - Sho Koyasu
- Laboratory of Cancer Cell Biology, Department of Genome Dynamics, Radiation Biology Center, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan; Department of Applied Chemistry, Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8904, Japan
| | - Minoru Kobayashi
- Laboratory of Cancer Cell Biology, Department of Genome Dynamics, Radiation Biology Center, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Hiroshi Harada
- Laboratory of Cancer Cell Biology, Department of Genome Dynamics, Radiation Biology Center, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan; Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan.
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Nomura H, Kase Y, Yamagami J, Wada N, Koyasu S, Takahashi H, Amagai M. 010 FcgRIIb is important for clonal ignorance and prevents pemphigus phenotype in pathogenic anti-desmoglein 3 antibody knock-in mice. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.02.023] [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: 10/19/2022]
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Asiedu KO, Koyasu S, Szajek LP, Choyke PL, Sato N. Bone Marrow Cell Trafficking Analyzed by 89Zr-oxine Positron Emission Tomography in a Murine Transplantation Model. Clin Cancer Res 2016; 23:2759-2768. [PMID: 27965305 DOI: 10.1158/1078-0432.ccr-16-1561] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 11/29/2016] [Accepted: 12/08/2016] [Indexed: 01/01/2023]
Abstract
Purpose: The success of hematopoietic stem cell transplantation (HSCT) depends on donor cell homing to the bone marrow. However, there is no reliable method of noninvasively monitoring the kinetics and distribution of transferred cells. Using zirconium-89 (89Zr)-oxine cell labeling combined with PET imaging, we sought to visualize and quantify donor cell homing in a mouse bone marrow transplantation model.Experimental Design: The effect of 89Zr-oxine labeling on bone marrow cell viability and differentiation was evaluated in vitro89Zr-labeled bone marrow cells (2 × 107 cells, 16.6 kBq/106 cells) were transferred intravenously, and serial microPET images were obtained (n = 5). The effect of a CXCR4 inhibitor, plerixafor (5 mg/kg) and G-CSF (2.5 μg) on bone marrow homing and mobilization were examined (n = 4). Engraftment of the transferred 89Zr-labeled cells was evaluated (n = 3).Results:89Zr-oxine-labeled bone marrow cells showed delayed proliferation, but differentiated normally. Transferred bone marrow cells rapidly migrated to the bone marrow, spleen, and liver (n = 5). Approximately 36% of donor cells homed to the bone marrow within 4 hours, irrespective of prior bone marrow ablation. Inhibition of CXCR4 by plerixafor alone or with G-CSF significantly blocked the bone marrow homing (P < 0.0001, vs. nontreated, at 2 hours), confirming a crucial role of the CXCR4-CXCL12 system. Mobilization of approximately 0.64% of pretransplanted bone marrow cells induced a 3.8-fold increase of circulating bone marrow cells. 89Zr-labeled donor cells engrafted as well as nonlabeled cells.Conclusions:89Zr-oxine PET imaging reveals rapid bone marrow homing of transferred bone marrow cells without impairment of their stem cell functions, and thus, could provide useful information for optimizing HSCT. Clin Cancer Res; 23(11); 2759-68. ©2016 AACR.
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Affiliation(s)
| | - Sho Koyasu
- Molecular Imaging Program, NCI, NIH, Bethesda, Maryland
| | - Lawrence P Szajek
- Positron Emission Tomography Department, Warren Grant Magnuson Clinical Center, NIH, Bethesda, Maryland
| | | | - Noriko Sato
- Molecular Imaging Program, NCI, NIH, Bethesda, Maryland.
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Fumoto N, Matsumoto R, Kawamata J, Koyasu S, Kondo T, Kitamura A, Koshiba Y, Kinoshita M, Kawasaki J, Yamashita H, Takahashi R, Ikeda A. Novel
LGI
1
mutation in a Japanese autosomal dominant lateral temporal lobe epilepsy family. ACTA ACUST UNITED AC 2016. [DOI: 10.1111/ncn3.12105] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Naohiro Fumoto
- Department of Neurology Kyoto University Graduate School of Medicine KyotoJapan
- Department of Neurology Minami‐Okayama Medical Center HayashimaJapan
| | - Riki Matsumoto
- Department of Neurology Kyoto University Graduate School of Medicine KyotoJapan
| | - Jun Kawamata
- Department of Neurology Kyoto University Graduate School of Medicine KyotoJapan
- Department of Neurology Sapporo Medical University SapporoJapan
- Department of Diagnostic Imaging and Nuclear Medicine Kyoto University Graduate School of Medicine KyotoJapan
| | - Sho Koyasu
- Department of Neurology Kyoto University Graduate School of Medicine KyotoJapan
- Department of Diagnostic Imaging and Nuclear Medicine Kyoto University Graduate School of Medicine KyotoJapan
- Department of Cell Growth and Differentiation Laboratory of Stem Cell Medicine Kyoto University KyotoJapan
| | - Takayuki Kondo
- Department of Neurology Kyoto University Graduate School of Medicine KyotoJapan
- Department of Cell Growth and Differentiation Laboratory of Stem Cell Medicine Kyoto University KyotoJapan
- Department of Neurology Kanazawa Medical University KanazawaJapan
| | - Akihiro Kitamura
- Department of Neurology Kyoto University Graduate School of Medicine KyotoJapan
- Department of Neurology Kanazawa Medical University KanazawaJapan
- Department of Neurology Kyoto City Hospital KyotoJapan
| | - Yasushi Koshiba
- Department of Neurology Kyoto City Hospital KyotoJapan
- Department of Biological Repair Field of Clinical Application Institute for Frontier Medical Sciences Kyoto University KyotoJapan
- Department of Neurology Utano National Hospital Kyoto Japan
| | - Masako Kinoshita
- Department of Neurology Utano National Hospital Kyoto Japan
- Kawasaki Clinic Kyoto Japan
| | - Jun Kawasaki
- Kawasaki Clinic Kyoto Japan
- Department of Epilepsy Movement Disorders and Physiology Kyoto University Graduate School ofMedicine Kyoto Japan
| | - Hirofumi Yamashita
- Department of Neurology Kyoto University Graduate School of Medicine KyotoJapan
| | - Ryosuke Takahashi
- Department of Neurology Kyoto University Graduate School of Medicine KyotoJapan
| | - Akio Ikeda
- Department of Neurology Sapporo Medical University SapporoJapan
- Department of Epilepsy Movement Disorders and Physiology Kyoto University Graduate School ofMedicine Kyoto Japan
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Nobashi T, Kubo T, Nakamoto Y, Handa T, Koyasu S, Ishimori T, Mishima M, Togashi K. 18F-FDG Uptake in Less Affected Lung Field Provides Prognostic Stratification in Patients with Interstitial Lung Disease. J Nucl Med 2016; 57:1899-1904. [DOI: 10.2967/jnumed.116.174946] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Accepted: 05/23/2016] [Indexed: 12/11/2022] Open
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Kikuchi M, Koyasu S, Shinohara S, Imai Y, Hino M, Naito Y. Preoperative Diagnostic Strategy for Parotid Gland Tumors Using Diffusion-Weighted MRI and Technetium-99m Pertechnetate Scintigraphy: A Prospective Study. PLoS One 2016; 11:e0148973. [PMID: 26849569 PMCID: PMC4744013 DOI: 10.1371/journal.pone.0148973] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 01/26/2016] [Indexed: 11/29/2022] Open
Abstract
Objective Fine needle aspiration cytology (FNAC) for diagnosis of a parotid gland tumor is widely used but its sensitivity is low and non-diagnostic rate is relatively high. In contrast, core needle biopsy (CNB) has a higher sensitivity and lower rate of sampling errors but has a higher risk of injury to adjacent organs such as facial nerve than FNAC. Screening of patients with parotid gland tumors to identify cases of pleomorphic adenoma (PA) and Warthin tumor (WT) may allow CNB to be confined to patients without PA and WT. We established an algorithm for preoperative diagnosis and management of parotid gland tumor using diffusion-weighted MRI and 99mTc pertechnetate scintigraphy. This algorithm was developed with the goal of maximal reduction of the number of patients in whom CNB is required. The purpose of the study is to validate our algorithm prospectively. Methods A prospective study was conducted in 71 cases who were newly diagnosed with parotid gland tumor and 53 cases were enrolled in the study. In the algorithm, PA (high apparent diffusion coefficient (ADC) mean≥1.5×10−3 mm2/s) and non-PA (low ADCmean<1.5×10−3 mm2/s) cases are first distinguished based on the ADCmean on diffusion-weighed MRI. Second, among suspected non-PA cases, WT and non-WT are distinguished using technetium-99m pertechnetate scintigraphy. CNB is then performed only in probable non-PA and non-WT cases. Results Although CNB was only required in 40% (21/53) of all cases, we made a preoperative histopathological diagnosis with an accuracy of 87% (46/53) and we correctly diagnosed whether a tumor was benign or malignant with an accuracy of 96% (51/53). Preoperative surgical planning had to be changed during surgery in only one case (2%) Conclusions Our algorithm is valuable in terms of clinical practice with highly potential for preoperative diagnosis and with less risk of CNB procedure.
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Affiliation(s)
- Masahiro Kikuchi
- Department of Otolaryngology-Head and Neck Surgery, Kobe City Medical Center General Hospital, Kobe, Hyogo, Japan
- * E-mail:
| | - Sho Koyasu
- Department of Radiology, Kobe City Medical Center General Hospital, Kobe, Hyogo, Japan
| | - Shogo Shinohara
- Department of Otolaryngology-Head and Neck Surgery, Kobe City Medical Center General Hospital, Kobe, Hyogo, Japan
| | - Yukihiro Imai
- Department of Clinical Pathology, Kobe City Medical Center General Hospital, Kobe, Hyogo, Japan
| | - Megumu Hino
- Department of Radiology, Kobe City Medical Center General Hospital, Kobe, Hyogo, Japan
| | - Yasushi Naito
- Department of Otolaryngology-Head and Neck Surgery, Kobe City Medical Center General Hospital, Kobe, Hyogo, Japan
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Nobashi T, Koyasu S, Nakamoto Y, Kubo T, Ishimori T, Kim YH, Yoshizawa A, Togashi K. Prognostic value of fluorine-18 fludeoxyglucose positron emission tomography parameters differs according to primary tumour location in small-cell lung cancer. Br J Radiol 2016; 89:20150618. [PMID: 26756811 DOI: 10.1259/bjr.20150618] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE To investigate the prognostic value of fluorine-18 fludeoxyglucose (FDG) positron emission tomography (PET) parameters for small-cell lung cancer (SCLC), according to the primary tumour location, adjusted by conventional prognostic factors. METHODS From 2008 to 2013, we enrolled consecutive patients with histologically proven SCLC, who had undergone FDG-PET/CT prior to initial therapy. The primary tumour location was categorized into central or peripheral types. PET parameters and clinical variables were evaluated using univariate and multivariate analysis. RESULTS A total of 69 patients were enrolled in this study; 28 of these patients were categorized as having the central type and 41 patients as having the peripheral type. In univariate analysis, stage, serum neuron-specific enolase, whole-body metabolic tumour volume (WB-MTV) and whole-body total lesion glycolysis (WB-TLG) were found to be significant in both types of patients. In multivariate analysis, the independent prognostic factor was found to be stage in the central type, but WB-MTV and WB-TLG in the peripheral type. Kaplan-Meier analysis demonstrated that patients with peripheral type with limited disease and low WB-MTV or WB-TLG showed significantly better overall survival than all of the other groups (p < 0.0083). CONCLUSION The FDG-PET volumetric parameters were demonstrated to be significant and independent prognostic factors in patients with peripheral type of SCLC, while stage was the only independent prognostic factor in patients with central type of SCLC. ADVANCES IN KNOWLEDGE FDG-PET is a non-invasive method that could potentially be used to estimate the prognosis of patients, especially those with peripheral-type SCLC.
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Affiliation(s)
- Tomomi Nobashi
- 1 Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Sho Koyasu
- 1 Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yuji Nakamoto
- 1 Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Takeshi Kubo
- 1 Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Takayoshi Ishimori
- 1 Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Young H Kim
- 2 Department of Respiratory Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Akihiko Yoshizawa
- 3 Department of Diagnostic Pathology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Kaori Togashi
- 1 Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
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Shiga Y, Umezawa N, Srinivasan N, Koyasu S, Sakai E, Miyauchi M. A metal sulfide photocatalyst composed of ubiquitous elements for solar hydrogen production. Chem Commun (Camb) 2016; 52:7470-3. [DOI: 10.1039/c6cc03199d] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A visible-light-sensitive tin sulfide photocatalyst was designed based on a ubiquitous element strategy and density functional theory (DFT) calculations.
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Affiliation(s)
- Y. Shiga
- School of Materials and Chemical Technology
- Tokyo Institute of Technology
- Tokyo 152-8552
- Japan
| | - N. Umezawa
- International Center for Materials Nanoarchitectonics
- National Institute for Materials Science (NIMS)
- Tsukuba
- Japan
| | - N. Srinivasan
- School of Materials and Chemical Technology
- Tokyo Institute of Technology
- Tokyo 152-8552
- Japan
| | - S. Koyasu
- School of Materials and Chemical Technology
- Tokyo Institute of Technology
- Tokyo 152-8552
- Japan
| | - E. Sakai
- School of Materials and Chemical Technology
- Tokyo Institute of Technology
- Tokyo 152-8552
- Japan
| | - M. Miyauchi
- School of Materials and Chemical Technology
- Tokyo Institute of Technology
- Tokyo 152-8552
- Japan
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Koyasu S, Tsuji Y, Harada H, Nakamoto Y, Nobashi T, Kimura H, Sano K, Koizumi K, Hamaji M, Togashi K. Evaluation of Tumor-associated Stroma and Its Relationship with Tumor Hypoxia Using Dynamic Contrast-enhanced CT and (18)F Misonidazole PET in Murine Tumor Models. Radiology 2015; 278:734-41. [PMID: 26393963 DOI: 10.1148/radiol.2015150416] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
PURPOSE To determine the relationship between the fractional interstitial volume (Fis), as calculated at dynamic contrast material-enhanced (DCE) computed tomography (CT), and tumor-associated stroma and to analyze its spatial relationship with tumor hypoxia in several xenograft tumor models. MATERIALS AND METHODS All animal experiments were approved by the animal research committee. Mice with three different xenograft tumors (U251, CFPAC-1, and BxPC-3; n = 6, n = 8, and n = 6, respectively) underwent DCE CT then hypoxia imaging with fluorine 18 ((18)F) fluoromisonidazole (FMISO) positron emission tomography (PET) within 24 hours. Immunohistochemical analysis was performed in harvested tumors to detect hypoxia markers and to quantify microvascular and stromal density. Two DCE CT parameters (amount of interstitial space associated with the amount of stroma [Fis] and flow velocity [Fv]) were identified and quantitatively validated by using immunohistochemistry. FMISO uptake within the tumor was also assessed in relation to DCE CT parameters. Imaging and immunohistochemical parameters were assessed by using the Kruskal-Wallis test, Wilcoxon rank-sum test with Bonferroni correction, and Pearson correlation coefficient. RESULTS Almost no α-smooth muscle actin-positive cells were found in the U251 xenograft, while abundant stroma was found in the entire BxPC-3 xenograft and in the periphery of the CFPAC-1 xenograft. Quantitative analysis showed a significant correlation (R = 0.83, P < .0001) between Fis and stromal density. FMISO uptake had a negative correlation with Fis (R = -0.58, P < .0001) and Fv (R = -0.53, P < .0001). CONCLUSION DCE CT can be used to quantify parameters associated with tumor-associated stroma. Tumor hypoxia was Complementarily localized in tumor-associated stroma in these models.
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Affiliation(s)
- Sho Koyasu
- From the Departments of Diagnostic Imaging and Nuclear Medicine (S.K., Y.N., T.N., K.S., K.T.), Gastroenterology and Hepatology (Y.T.), and Radiation Oncology and Image-Applied Therapy (H.H.), Graduate School of Medicine, Division of Molecular Imaging, Radioisotope Research Center (H.K), Clinical Radiology Service, Kyoto University Hospital (K.K.); and Department of Bioartificial Organs, Institute for Frontier Medical Science (M.H.), Kyoto University, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto 606-8507, Japan
| | - Yoshihisa Tsuji
- From the Departments of Diagnostic Imaging and Nuclear Medicine (S.K., Y.N., T.N., K.S., K.T.), Gastroenterology and Hepatology (Y.T.), and Radiation Oncology and Image-Applied Therapy (H.H.), Graduate School of Medicine, Division of Molecular Imaging, Radioisotope Research Center (H.K), Clinical Radiology Service, Kyoto University Hospital (K.K.); and Department of Bioartificial Organs, Institute for Frontier Medical Science (M.H.), Kyoto University, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto 606-8507, Japan
| | - Hiroshi Harada
- From the Departments of Diagnostic Imaging and Nuclear Medicine (S.K., Y.N., T.N., K.S., K.T.), Gastroenterology and Hepatology (Y.T.), and Radiation Oncology and Image-Applied Therapy (H.H.), Graduate School of Medicine, Division of Molecular Imaging, Radioisotope Research Center (H.K), Clinical Radiology Service, Kyoto University Hospital (K.K.); and Department of Bioartificial Organs, Institute for Frontier Medical Science (M.H.), Kyoto University, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto 606-8507, Japan
| | - Yuji Nakamoto
- From the Departments of Diagnostic Imaging and Nuclear Medicine (S.K., Y.N., T.N., K.S., K.T.), Gastroenterology and Hepatology (Y.T.), and Radiation Oncology and Image-Applied Therapy (H.H.), Graduate School of Medicine, Division of Molecular Imaging, Radioisotope Research Center (H.K), Clinical Radiology Service, Kyoto University Hospital (K.K.); and Department of Bioartificial Organs, Institute for Frontier Medical Science (M.H.), Kyoto University, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto 606-8507, Japan
| | - Tomomi Nobashi
- From the Departments of Diagnostic Imaging and Nuclear Medicine (S.K., Y.N., T.N., K.S., K.T.), Gastroenterology and Hepatology (Y.T.), and Radiation Oncology and Image-Applied Therapy (H.H.), Graduate School of Medicine, Division of Molecular Imaging, Radioisotope Research Center (H.K), Clinical Radiology Service, Kyoto University Hospital (K.K.); and Department of Bioartificial Organs, Institute for Frontier Medical Science (M.H.), Kyoto University, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto 606-8507, Japan
| | - Hiroyuki Kimura
- From the Departments of Diagnostic Imaging and Nuclear Medicine (S.K., Y.N., T.N., K.S., K.T.), Gastroenterology and Hepatology (Y.T.), and Radiation Oncology and Image-Applied Therapy (H.H.), Graduate School of Medicine, Division of Molecular Imaging, Radioisotope Research Center (H.K), Clinical Radiology Service, Kyoto University Hospital (K.K.); and Department of Bioartificial Organs, Institute for Frontier Medical Science (M.H.), Kyoto University, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto 606-8507, Japan
| | - Kohei Sano
- From the Departments of Diagnostic Imaging and Nuclear Medicine (S.K., Y.N., T.N., K.S., K.T.), Gastroenterology and Hepatology (Y.T.), and Radiation Oncology and Image-Applied Therapy (H.H.), Graduate School of Medicine, Division of Molecular Imaging, Radioisotope Research Center (H.K), Clinical Radiology Service, Kyoto University Hospital (K.K.); and Department of Bioartificial Organs, Institute for Frontier Medical Science (M.H.), Kyoto University, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto 606-8507, Japan
| | - Koji Koizumi
- From the Departments of Diagnostic Imaging and Nuclear Medicine (S.K., Y.N., T.N., K.S., K.T.), Gastroenterology and Hepatology (Y.T.), and Radiation Oncology and Image-Applied Therapy (H.H.), Graduate School of Medicine, Division of Molecular Imaging, Radioisotope Research Center (H.K), Clinical Radiology Service, Kyoto University Hospital (K.K.); and Department of Bioartificial Organs, Institute for Frontier Medical Science (M.H.), Kyoto University, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto 606-8507, Japan
| | - Masatsugu Hamaji
- From the Departments of Diagnostic Imaging and Nuclear Medicine (S.K., Y.N., T.N., K.S., K.T.), Gastroenterology and Hepatology (Y.T.), and Radiation Oncology and Image-Applied Therapy (H.H.), Graduate School of Medicine, Division of Molecular Imaging, Radioisotope Research Center (H.K), Clinical Radiology Service, Kyoto University Hospital (K.K.); and Department of Bioartificial Organs, Institute for Frontier Medical Science (M.H.), Kyoto University, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto 606-8507, Japan
| | - Kaori Togashi
- From the Departments of Diagnostic Imaging and Nuclear Medicine (S.K., Y.N., T.N., K.S., K.T.), Gastroenterology and Hepatology (Y.T.), and Radiation Oncology and Image-Applied Therapy (H.H.), Graduate School of Medicine, Division of Molecular Imaging, Radioisotope Research Center (H.K), Clinical Radiology Service, Kyoto University Hospital (K.K.); and Department of Bioartificial Organs, Institute for Frontier Medical Science (M.H.), Kyoto University, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto 606-8507, Japan
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Kishimoto S, Bernardo M, Saito K, Koyasu S, Mitchell JB, Choyke PL, Krishna MC. Evaluation of oxygen dependence on in vitro and in vivo cytotoxicity of photoimmunotherapy using IR-700-antibody conjugates. Free Radic Biol Med 2015; 85:24-32. [PMID: 25862414 PMCID: PMC4508222 DOI: 10.1016/j.freeradbiomed.2015.03.038] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Revised: 03/19/2015] [Accepted: 03/30/2015] [Indexed: 11/29/2022]
Abstract
Photoimmunotherapy (PIT) using the near-infrared-absorbing photosensitizing phthalocyanine dye, IRDye 700DX (IR-700), conjugated with a tumor-targeting antibody such as panitumumab (Pan) has shown efficacy in in vitro studies and several preclinical models in mice with promise for clinical translation. PIT results in rapid necrotic cell death in vitro and tumor shrinkage in vivo. Photochemical studies with the Pan-IR-700 conjugate showed that this agent can support generation of singlet oxygen and also generate reactive oxygen species after exposure to near-infrared (NIR) light. Moreover, in vitro studies using A431 cells, singlet oxygen scavengers abrogated the efficacy of PIT with Pan-IR-700, while oxygen depletion to undetectable levels in the exposure chamber almost completely inhibited the cellular cytotoxicity of PIT. Survival of tumor bearing mice was prolonged in PIT-treated animals but mice whose tumors were made transiently hypoxic prior to PIT had no benefit from the treatment. The results from this study support a central role for molecular oxygen-derived species in cell death caused by PIT.
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Affiliation(s)
- Shun Kishimoto
- Radiation Biology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Marcelino Bernardo
- Molecular Imaging Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Keita Saito
- Radiation Biology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Sho Koyasu
- Molecular Imaging Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - James B Mitchell
- Radiation Biology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Peter L Choyke
- Molecular Imaging Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Murali C Krishna
- Radiation Biology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA; Radiation Biology Branch, Center for Cancer Research, National Cancer Institute, Building 10, Room B3B69, NIH, 10 Center Drive, Bethesda, MD 20892-1002, USA.
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Hamaji M, Kojima F, Koyasu S, Nobashi T, Tsuruyama T, Date H, Nakamura T. A rigid and bioabsorbable material for anterior chest wall reconstruction in a canine model. Interact Cardiovasc Thorac Surg 2014; 20:322-8. [PMID: 25505306 DOI: 10.1093/icvts/ivu416] [Citation(s) in RCA: 5] [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] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVES The optimal material for anterior chest wall reconstruction following chest wall resection remains controversial. The aim of this experimental study was to evaluate short-term, morphological and histological outcomes of anterior chest wall reconstruction with a rigid and bioabsorbable material in a canine model. METHODS Twenty adult beagle dogs underwent anterior chest wall resection. In the experimental group (n = 10), the anterior chest wall was reconstructed with a rigid and bioabsorbable material composed of poly-L-lactide acid matrix (60 wt%) and uncalcined and unsintered hydroxyapatite particles (40 wt%), whereas in the control group it was (n = 10) reconstructed with dual polypropylene mesh sheets. Short-term complication rates were compared with a χ(2) test. Postoperative sternal deviations were evaluated with sternal alignment angles using computed tomography and multiplanar reconstruction and were compared with Mann-Whitney U-test immediately after reconstruction, and at 1, 3, 6, 9 and 12 months postoperatively. Histological findings of the regenerated chest wall tissue were obtained after staining with haematoxylin and eosin and Elastica van Gieson (EVG) and compared at 3, 6, 9 and 12 months. RESULTS There was not a significant difference in the short-term postoperative complication rate (P = 0.53) and the complication rate was 20% (wound infection, n = 1 and lethal mediastinitis, n = 1) in the control group and 10% (wound infection, n = 1) in the experimental group. The postoperative sternal deviation was significantly less remarkable at 1 month (123.3 ± 32.2° vs 159.4 ± 19.7°, P = 0.027), 3 months (109.8 ± 34.7° vs 150.9 ± 34.2°, P = 0.039) and 12 months (61 ± 15.6° vs 170.3 ± 6.6°, P = 0.046) in the experimental group than in the control group, whereas no significant difference was noted immediately after reconstruction (165.7 ± 6.4° vs 168.4 ± 9.1°, P = 0.50). Histological findings showed dense connective tissue in the regenerated chest wall in both groups and showed chondroblasts in the regenerated chest wall tissue at 3 and 6 months only in the experimental group. CONCLUSIONS Our results suggest that anterior chest wall reconstruction with a rigid and bioabsorbable material is feasible and may be a valuable alternative to reconstruction with a non-rigid and non-absorbable material.
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Affiliation(s)
- Masatsugu Hamaji
- Department of Bioartificial Organs, Graduate School of Medicine, Kyoto University, Kyoto, Japan Department of Thoracic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Fumitsugu Kojima
- Department of Bioartificial Organs, Graduate School of Medicine, Kyoto University, Kyoto, Japan Department of Thoracic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Sho Koyasu
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Tomomi Nobashi
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Tatsuaki Tsuruyama
- Center for Anatomical, Pathological and Forensic Medical Researches, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hiroshi Date
- Department of Thoracic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Tatsuo Nakamura
- Department of Bioartificial Organs, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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Koyasu S, Iima M, Umeoka S, Morisawa N, Porter DA, Ito J, Le Bihan D, Togashi K. The clinical utility of reduced-distortion readout-segmented echo-planar imaging in the head and neck region: initial experience. Eur Radiol 2014; 24:3088-96. [DOI: 10.1007/s00330-014-3369-5] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 06/14/2014] [Accepted: 07/21/2014] [Indexed: 11/29/2022]
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