1
|
Nishimata H, Kamasaki Y, Satoh K, Kinoshita R, Omori K, Hoshino T. Suppression of Streptococcus mutans Biofilm Formation and Gene Expression by PRG Barrier Coat: A Molecular and Microscopic Study for Preventing Dental Caries. Oral Health Prev Dent 2024; 22:73-79. [PMID: 38305425 DOI: 10.3290/j.ohpd.b4928623] [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] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
PURPOSE This study aimed to investigate the inhibitory effect of a PRG Barrier Coat on biofilm formation and structure by Streptococcus mutans and propose an effective method for preventing dental caries. MATERIALS AND METHODS Streptococcus mutans MT8148 biofilms were obtained from hydroxyapatite disks with and with- out a PRG Barrier Coat. Scanning electron microscopy (SEM) was used to observe the 12- and 24-h-cultured biofilms, while reverse-transcription polymerase chain reaction (qRT-PCR) was used to quantify caries-related genes. Biofilm adhe- sion assessments were performed on glass. Statistical analysis was performed using a two-sample t-test. RESULTS A statistically significant difference in Streptococcus mutans biofilm adhesion rate was observed between the con- trol and PRG Barrier Coat-coated samples (p < 0.01). However, there was no statistically significant difference in total bacter- ial count or biofilm volume (p > 0.05). SEM revealed that the PRG Barrier Coat inhibited biofilm formation by Streptococcus mutans. Real-time RT-PCR revealed that the material restricted the expression of genes associated with caries-related bio- film formation. However, the suppression of gtfD and dexB differed from that of other genes. CONCLUSION PRG Barrier Coat suppressed biofilm formation by Streptococcus mutans by inhibiting the expression of in- soluble glucan synthase, which is associated with primary biofilm formation. The material also affected gene expression and altered the biofilm structure. Tooth surface-coating materials, such as PRG Barrier Coat, may improve caries preven- tion in dental practice.
Collapse
|
2
|
Fukushima H, Naruse T, Furukawa K, Omori K, Miyoshi T, Miura KI, Otsuru M, Umeda M. Extranodal Extension and Epithelial Cell Adhesion Molecule Over-expression in Oral Squamous Cell Carcinoma. Anticancer Res 2023; 43:5155-5166. [PMID: 37909986 DOI: 10.21873/anticanres.16716] [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] [Revised: 10/05/2023] [Accepted: 10/06/2023] [Indexed: 11/03/2023]
Abstract
BACKGROUND/AIM Concomitant chemoradiotherapy (CCRT) with cisplatin is commonly administered after neck dissection in patients with oral squamous cell carcinoma (OSCC) showing extranodal extension (ENE). This study investigated whether the efficacy of CCRT differed depending on the degree of ENE and whether the expression of epithelial cell adhesion molecule (EpCAM) was associated with prognosis. PATIENTS AND METHODS Patients with OSCC who underwent neck dissection and had histologically proven neck metastasis (pN+) were investigated retrospectively. ENE was divided into ENE minor (ENEmi; <2 mm) and ENE major (ENEma; ≥2 mm). The expression of EpCAM was also immunohistochemically examined using tissues obtained during neck dissection. RESULTS One hundred and seventy pN+ cases [ENE(-), n=89; ENEmi, n=23; ENEma, n=58] were included. Multivariate analysis revealed that advanced T stage and ENEma were significantly correlated with poor prognosis. The 5-year disease-specific survival rates in ENE(-), ENEmi, and ENEma groups were 73.7%, 75.5%, and 28.0% respectively. An add-on effect of postoperative CCRT was not seen in the ENEmi group; however, postoperative CCRT improved the survival of patients in the ENEma group. In the ENEma group, the prognosis was significantly worse in EpCAM-positive patients than in EpCAM-negative patients. CONCLUSION Postoperative CCRT may improve prognosis in ENEma cases. EpCAM expression may be a poor prognostic factor in ENEma cases. On the other hand, postoperative CCRT did not have a significant effect on prognosis in ENEmi cases. Among them, although there was no significant difference in the survival rate, postoperative CCRT could be omitted in ENEmi/EpCAM(-) cases.
Collapse
Affiliation(s)
- Hiromasa Fukushima
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Tomofumi Naruse
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kohei Furukawa
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Keisuke Omori
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Taro Miyoshi
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kei-Ichiro Miura
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Mitsunobu Otsuru
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Masahiro Umeda
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| |
Collapse
|
3
|
Horikami D, Sekihachi E, Omori K, Kobayashi Y, Kobayashi K, Nagata N, Kurata K, Uemura A, Murata T. Roles of lipocalin-type and hematopoietic prostaglandin D synthases in mouse retinal angiogenesis. J Lipid Res 2023; 64:100439. [PMID: 37666361 PMCID: PMC10571029 DOI: 10.1016/j.jlr.2023.100439] [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: 03/23/2023] [Revised: 08/19/2023] [Accepted: 08/22/2023] [Indexed: 09/06/2023] Open
Abstract
Normal angiogenesis is essential for retinal development and maintenance of visual function in the eye, and its abnormality can cause retinopathy and other eye diseases. Prostaglandin D2 is an anti-angiogenic lipid mediator produced by lipocalin-type PGD synthase (L-PGDS) or hematopoietic PGD synthase (H-PGDS). However, the exact role of these PGD synthases remains unclear. Therefore, we compared the roles of these synthases in murine retinal angiogenesis under physiological and pathological conditions. On postnatal day (P) 8, the WT murine retina was covered with an elongated vessel. L-PGDS deficiency, but not H-PGDS, reduced the physiological vessel elongation with sprouts increase. L-PGDS expression was observed in endothelial cells and neural cells. In vitro, L-PGDS inhibition increased the hypoxia-induced vascular endothelial growth factor expression in isolated endothelial cells, inhibited by a prostaglandin D2 metabolite, 15-deoxy-Δ12,14 -PGJ2 (15d-PGJ2) treatment. Pericyte depletion, using antiplatelet-derived growth factor receptor-β antibody, caused retinal hemorrhage with vessel elongation impairment and macrophage infiltration in the WT P8 retina. H-PGDS deficiency promoted hemorrhage but inhibited the impairment of vessel elongation, while L-PGDS did not. In the pericyte-depleted WT retina, H-PGDS was expressed in the infiltrated macrophages. Deficiency of the D prostanoid receptor also inhibited the vessel elongation impairment. These results suggest the endogenous role of L-PGDS signaling in physiological angiogenesis and that of H-PGDS/D prostanoid 1 signaling in pathological angiogenesis.
Collapse
Affiliation(s)
- Daiki Horikami
- Department of Animal Radiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Erika Sekihachi
- Department of Animal Radiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Keisuke Omori
- Department of Animal Radiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Yui Kobayashi
- Department of Animal Radiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Koji Kobayashi
- Department of Animal Radiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Nanae Nagata
- Department of Animal Radiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Kaori Kurata
- Department of Retinal Vascular Biology, Nagoya City University Graduate School of Medical Sciences, Mizuho-ku, Nagoya, Japan
| | - Akiyoshi Uemura
- Department of Retinal Vascular Biology, Nagoya City University Graduate School of Medical Sciences, Mizuho-ku, Nagoya, Japan
| | - Takahisa Murata
- Department of Animal Radiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, Japan.
| |
Collapse
|
4
|
Omori K, Otani S, Date Y, Ueno T, Ito T, Umeda M, Ito K. C/ebpα represses the oncogenic Runx3-Myc axis in p53-deficient osteosarcoma development. Oncogene 2023; 42:2485-2494. [PMID: 37402881 DOI: 10.1038/s41388-023-02761-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 06/14/2023] [Accepted: 06/22/2023] [Indexed: 07/06/2023]
Abstract
Osteosarcoma (OS) is characterized by TP53 mutations in humans. In mice, loss of p53 triggers OS development, and osteoprogenitor-specific p53-deleted mice are widely used to study the process of osteosarcomagenesis. However, the molecular mechanisms underlying the initiation or progression of OS following or parallel to p53 inactivation remain largely unknown. Here, we examined the role of transcription factors involved in adipogenesis (adipo-TFs) in p53-deficient OS and identified a novel tumor suppressive molecular mechanism mediated by C/ebpα. C/ebpα specifically interacts with Runx3, a p53 deficiency-dependent oncogene, and, in the same manner as p53, decreases the activity of the oncogenic axis of OS, Runx3-Myc, by inhibiting Runx3 DNA binding. The identification of a novel molecular role for C/ebpα in p53-deficient osteosarcomagenesis underscores the importance of the Runx-Myc oncogenic axis as a therapeutic target for OS.
Collapse
Affiliation(s)
- Keisuke Omori
- Department of Molecular Bone Biology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
- Department of Clinical Oral Oncology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
| | - Shohei Otani
- Department of Molecular Bone Biology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
| | - Yuki Date
- Department of Molecular Bone Biology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
| | - Tomoya Ueno
- Department of Molecular Bone Biology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
| | - Tomoko Ito
- Department of Molecular Bone Biology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
| | - Masahiro Umeda
- Department of Clinical Oral Oncology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
| | - Kosei Ito
- Department of Molecular Bone Biology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan.
| |
Collapse
|
5
|
Otsuru M, Naruse T, Omori K, Miyoshi T, Katase N, Fujita S, Umeda M. Occurrence of Plasmablastic Lymphoma in the Oral Cavity of an Atomic Blast Survivor. Journal of Oral and Maxillofacial Surgery, Medicine, and Pathology 2023. [DOI: 10.1016/j.ajoms.2023.02.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
|
6
|
Otsuru M, Yanamoto S, Naruse T, Omori K, Morishita K, Sumi M, Umeda M. Surgical treatment and prognosis of posteriorly invading oral cancer: Potential clinical significance of pterygomandibular raphe. J Dent Sci 2023; 18:81-86. [PMID: 36643228 PMCID: PMC9831833 DOI: 10.1016/j.jds.2022.07.008] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/10/2022] [Indexed: 01/18/2023] Open
Abstract
Background/purpose The prognosis of oral squamous cell carcinoma (OSCC) with posterior invasion is poor. We examined whether the pterygomandibular raphe (PMR) is useful for the diagnosis of invasion and determination of surgical methods. Materials and methods Of 390 patients with OSCC treated surgically at our hospital between June 2009 and June 2020, 80 patients with posterior invasion were included in the study. Preoperative magnetic resonance imaging was used to classify the lesions into three types: non-contact with PMR (non-contact type), contact with PMR (contact type), and invasion beyond PMR (invasion type). We compared the local control, recurrence, and survival rates of each of the three types. Results The invasion type showed a significantly higher recurrence rate than the non-contact type (P < 0.001) and contact type (P = 0.018). Overall survival rate comparisons showed that the invasion type had significantly worse prognosis than the non-contact (P = 0.004) and contact types (P = 0.041). Conclusion OSCCs with posterior invasion beyond the PMR showed a poor treatment outcome and, therefore, should be treated with caution. The initial surgery is especially important and must ensure local control. This study indicates that the PMR is an important criterion for surgical method determination and that invasion beyond the PMR is a predictor of local recurrence and poor prognosis.
Collapse
Affiliation(s)
- Mitsunobu Otsuru
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan,Corresponding Author: Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki-City, 852-8588, Japan.
| | - Souichi Yanamoto
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Tomofumi Naruse
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Keisuke Omori
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kota Morishita
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Misa Sumi
- Department of Radiology and Biomedical Informatics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Masahiro Umeda
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| |
Collapse
|
7
|
Nakayama T, Oishi M, Weng J, Omori K, Kwon C, Nakazawa T, Nishibata T, Kinugasa F, Yoshida T, Nagasaka Y. 42P Antitumor activity of zolbetuximab combined with chemotherapy and anti-mouse PD-1 antibody (anti-mPD-1) in a syngeneic mouse model and a virtual preclinical trial using a quantitative systems pharmacology (QSP) model. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
|
8
|
Omori K, Otsuru M, Morishita K, Hayashida S, Suyama K, Naruse T, Soutome S, Umeda M. Ineffectiveness of Antiresorptive Agent Drug Holidays in Osteoporosis Patients for Treatment of Medication-Related Osteonecrosis of the Jaw: Consideration from Immunohistological Observation of Osteoclast Suppression and Treatment Outcomes. Int J Environ Res Public Health 2022; 19:10898. [PMID: 36078614 PMCID: PMC9517825 DOI: 10.3390/ijerph191710898] [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] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 08/28/2022] [Accepted: 08/30/2022] [Indexed: 06/15/2023]
Abstract
In patients with osteoporosis receiving antiresorptive agents (ARs), it has been widely practiced to withdraw ARs for several months before tooth extraction and during treatment if medication-related osteonecrosis of the jaw (MRONJ) develops. This study examined the effects of drug holidays on recovery from osteoclast suppression and the treatment outcomes. The relationship between the period of the drug holidays and treatment outcomes was examined retrospectively in 166 osteoporosis patients with MRONJ who received ARs. Histological examinations using hematoxylin and eosin staining and cathepsin K stains were performed to observe the recovery from osteoclast suppression in 43 patients in whom living bone was observed in the resection margins of the surgical specimens. Three-month AR drug holidays were not significantly correlated with the treatment outcomes of the 139 patients who underwent surgical treatment and the 27 who underwent conservative treatment. Of the 43 patients who underwent histological investigations, 16 had drug holidays from 7 to 678 days. Osteoclast suppression was observed in almost all patients, except in one without a drug holiday and one with a 261-day drug holiday. These findings suggest that AR drug holidays for approximately 3 months neither recover osteoclast suppression nor affect treatment outcomes.
Collapse
Affiliation(s)
- Keisuke Omori
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan
| | - Mitsunobu Otsuru
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan
| | - Kota Morishita
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan
| | - Saki Hayashida
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan
| | - Koki Suyama
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan
| | - Tomofumi Naruse
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan
| | - Sakiko Soutome
- Department of Oral Health, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan
| | - Masahiro Umeda
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan
| |
Collapse
|
9
|
Soutome S, Otsuru M, Murata M, Morishita K, Omori K, Suyama K, Hayashida S, Umeda M, Saito T. Risk factors for developing medication-related osteonecrosis of the jaw when preserving the tooth that can be a source of infection in cancer patients receiving high-dose antiresorptive agents: a retrospective study. Support Care Cancer 2022; 30:7241-7248. [PMID: 35587291 DOI: 10.1007/s00520-022-07134-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 05/09/2022] [Indexed: 11/30/2022]
Abstract
PURPOSE To retrospectively investigate whether apical lesion, alveolar bone loss, probing pocket depth, or local infectious symptoms were associated with the onset of medication-related osteonecrosis of the jaw (MRONJ) in patients treated with high-dose antiresorptive agents who did not undergo tooth extraction. METHODS The study included 92 patients receiving high-dose antiresorptive agent therapy who had teeth with apical lesion ≧ 3 mm, alveolar bone loss ≧ 1/2, probing pocket depth ≧ 4 mm, or local infection symptoms such as swelling, pain, and pus discharge, but did not undergo tooth extraction. Univariate and multivariate Cox regression analyses were performed to determine the relationship between each variable and MRONJ onset. RESULTS MRONJ developed in 15 of 92 patients (35 of 404 teeth) from 74 to 1883 days (median, 383 days) after the first visit. Multiple Cox regression analysis revealed that a lower number of teeth, diabetes, increased leukocyte count, administration of antiresorptive agents for 180 days or more, local infection symptoms, apical lesion ≧ 3 mm, and probing pocket depth ≧ 4 mm were significantly correlated with the development of MRONJ. CONCLUSION It is recommended that teeth with apical lesion ≧ 3 mm, probing pocket depth ≧ 4 mm, or local infection symptoms are extracted before or as early as possible after beginning of medication in cancer patients receiving high-dose antiresorptive agent therapy to prevent the development of MRONJ.
Collapse
Affiliation(s)
- Sakiko Soutome
- Department of Oral Health, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan.
| | - Mitsunobu Otsuru
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
| | - Maho Murata
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
| | - Kota Morishita
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
| | - Keisuke Omori
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
| | - Koki Suyama
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
| | - Saki Hayashida
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
| | - Masahiro Umeda
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
| | - Toshiyuki Saito
- Department of Oral Health, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
| |
Collapse
|
10
|
Otsuru M, Soutome S, Omori K, Suyama K, Morishita K, Hayashida S, Murata M, Takagi Y, Sasaki M, Sumi M, Kojima Y, Sawada S, Sakamoto Y, Umeda M. Relationship between Drug Holidays of Antiresorptive Agents and Surgical Outcomes in Cancer Patients with Medication-Related Osteonecrosis of the Jaw. Int J Environ Res Public Health 2022; 19:ijerph19084624. [PMID: 35457491 PMCID: PMC9027682 DOI: 10.3390/ijerph19084624] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 04/01/2022] [Accepted: 04/07/2022] [Indexed: 11/16/2022]
Abstract
It is controversial as to whether the withdrawal of antiresorptive (AR) agents is necessary while treating medication-related osteonecrosis of the jaw (MRONJ). In this study, we investigated whether a drug holiday promoted sequestrum separation and improved the surgical outcomes of MRONJ patients with malignant tumors, who were undergoing high-dose AR therapy. In total, we included 103 MRONJ patients with malignant tumors as their primary disease who underwent surgery at Nagasaki University Hospital or Kansai Medical University Hospital from January 2009 to December 2020. We recorded the patients’ age, sex, primary disease, MRONJ stage, type and administration period of the AR agent, presence of diabetes, corticosteroid use, drug holiday period, white blood cell count, serum albumin, serum creatinine, outcomes, and computed tomography findings. The relationships between a drug holiday and sequestrum separation, and between a drug holiday and outcome, were analyzed. Drug holidays of 60, 90, and 120 days were not significant factors of sequestrum separation and did not influence patients’ surgical outcomes as per the univariate and multivariate analyses. MRONJ patients with cancer as their primary disease should be operated upon immediately and without drug holidays if their general condition permits surgery.
Collapse
Affiliation(s)
- Mitsunobu Otsuru
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan; (K.O.); (K.S.); (K.M.); (S.H.); (M.M.); (M.U.)
- Correspondence:
| | - Sakiko Soutome
- Department of Oral Health, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan;
| | - Keisuke Omori
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan; (K.O.); (K.S.); (K.M.); (S.H.); (M.M.); (M.U.)
| | - Koki Suyama
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan; (K.O.); (K.S.); (K.M.); (S.H.); (M.M.); (M.U.)
| | - Kota Morishita
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan; (K.O.); (K.S.); (K.M.); (S.H.); (M.M.); (M.U.)
| | - Saki Hayashida
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan; (K.O.); (K.S.); (K.M.); (S.H.); (M.M.); (M.U.)
| | - Maho Murata
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan; (K.O.); (K.S.); (K.M.); (S.H.); (M.M.); (M.U.)
| | - Yukinori Takagi
- Department of Radiology and Biomedical Informatics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan; (Y.T.); (M.S.); (M.S.)
| | - Miho Sasaki
- Department of Radiology and Biomedical Informatics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan; (Y.T.); (M.S.); (M.S.)
| | - Misa Sumi
- Department of Radiology and Biomedical Informatics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan; (Y.T.); (M.S.); (M.S.)
| | - Yuka Kojima
- Department of Dentistry and Oral Surgery, Kansai Medical University, Osaka 852-8588, Japan; (Y.K.); (S.S.); (Y.S.)
| | - Shunsuke Sawada
- Department of Dentistry and Oral Surgery, Kansai Medical University, Osaka 852-8588, Japan; (Y.K.); (S.S.); (Y.S.)
| | - Yuki Sakamoto
- Department of Dentistry and Oral Surgery, Kansai Medical University, Osaka 852-8588, Japan; (Y.K.); (S.S.); (Y.S.)
| | - Masahiro Umeda
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan; (K.O.); (K.S.); (K.M.); (S.H.); (M.M.); (M.U.)
| |
Collapse
|
11
|
Otani S, Date Y, Ueno T, Ito T, Kajikawa S, Omori K, Taniuchi I, Umeda M, Komori T, Toguchida J, Ito K. Runx3 is required for oncogenic Myc upregulation in p53-deficient osteosarcoma. Oncogene 2022; 41:683-691. [PMID: 34803166 DOI: 10.1038/s41388-021-02120-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 11/05/2021] [Accepted: 11/12/2021] [Indexed: 01/21/2023]
Abstract
Osteosarcoma (OS) in human patients is characterized by genetic alteration of TP53. Osteoprogenitor-specific p53-deleted mice (OS mice) have been widely used to study the process of osteosarcomagenesis. However, the molecular mechanisms responsible for the development of OS upon p53 inactivation remain largely unknown. In this study, we detected prominent RUNX3/Runx3 expression in human and mouse p53-deficient OS. Myc was aberrantly upregulated by Runx3 via mR1, a consensus Runx site in the Myc promoter, in a manner dependent on p53 deficiency. Reduction of the Myc level by disruption of mR1 or Runx3 knockdown decreased the tumorigenicity of p53-deficient OS cells and effectively suppressed OS development in OS mice. Furthermore, Runx inhibitors exerted therapeutic effects on OS mice. Together, these results show that p53 deficiency promotes osteosarcomagenesis in human and mouse by allowing Runx3 to induce oncogenic Myc expression.
Collapse
Affiliation(s)
- Shohei Otani
- Department of Molecular Bone Biology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan.,Department of Clinical Oral Oncology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
| | - Yuki Date
- Department of Molecular Bone Biology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan.,Japan Society for the Promotion of Science, 5-3-1 Kojimachi, Chiyoda-ku, Tokyo, 102-0083, Japan
| | - Tomoya Ueno
- Department of Molecular Bone Biology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
| | - Tomoko Ito
- Department of Molecular Bone Biology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
| | - Shuhei Kajikawa
- Department of Veterinary Medicine, Faculty of Veterinary Medicine, Okayama University of Science, 1-3 Ikoinooka, Imabari, Ehime, 794-8555, Japan
| | - Keisuke Omori
- Department of Molecular Bone Biology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan.,Department of Clinical Oral Oncology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
| | - Ichiro Taniuchi
- Laboratory for Transcriptional Regulation, RIKEN Center for Integrative Medical Sciences, 1-7-22, Suehiro-cho, Tsurumi-ku, Yokohama, 230-0045, Japan
| | - Masahiro Umeda
- Department of Clinical Oral Oncology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
| | - Toshihisa Komori
- Department of Cell Biology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
| | - Junya Toguchida
- Institute for Frontier Life and Medical Sciences, Kyoto University, Shogoin-Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan.,Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Shogoin-Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Kosei Ito
- Department of Molecular Bone Biology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan.
| |
Collapse
|
12
|
Nishibata T, Weng J, Omori K, Sato Y, Nakazawa T, Suzuki T, Yamada T, Nakajo I, Kinugasa F, Yoshida T. 986P Antitumor effect of zolbetuximab combined with chemotherapeutic agents or an anti-mPD-1 antibody in syngeneic immune-competent mice. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
|
13
|
Miyazaki Y, Nakamura T, Takenouchi S, Hayashi A, Omori K, Murata T. Urinary 8-iso PGF2α and 2,3-dinor-8-iso PGF2α can be indexes of colitis-associated colorectal cancer in mice. PLoS One 2021; 16:e0245292. [PMID: 33503019 PMCID: PMC7840041 DOI: 10.1371/journal.pone.0245292] [Citation(s) in RCA: 5] [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: 08/16/2020] [Accepted: 12/25/2020] [Indexed: 01/07/2023] Open
Abstract
Early diagnosis of colorectal cancer is needed to reduce the mortal consequence by cancer. Lipid mediators play critical role in progression of colitis and colitis-associated colon cancer (CAC) and some of their metabolites are excreted in urine. Here, we attempted to find novel biomarkers in urinary lipid metabolite of a murine model of CAC. Mice were received single administration of azoxymethane (AOM) and repeated administration of dextran sulfate sodium (DSS). Lipid metabolites in their urine was measured by liquid chromatography mass spectrometry and their colon was collected to perform morphological study. AOM and DSS caused inflammation and tumor formation in mouse colon. Liquid chromatography mass spectrometry-based comprehensive analysis of lipid metabolites showed that cyclooxygenase-mediated arachidonic acid (AA) metabolites, prostaglandins, and reactive oxygen species (ROS)-mediated AA metabolites, isoprostanes, were predominantly increased in the urine of tumor-bearing mice. Among that, urinary prostaglandin (PG)E2 metabolite tetranor-PGEM and PGD2 metabolite tetranor-PGDM were significantly increased in both of urine collected at the acute phase of colitis and the carcinogenesis phase. On the other hand, two F2 isoprostanes (F2-IsoPs), 8-iso PGF2α and 2,3-dinor-8-iso PGF2α, were significantly increased only in the carcinogenesis phase. Morphological study showed that infiltrated monocytes into tumor mass strongly expressed ROS generator NADPH (p22phox). These observations suggest that urinary 8-iso PGF2α and 2,3-dinor-8-iso PGF2α can be indexes of CAC.
Collapse
Affiliation(s)
- Yusuke Miyazaki
- Department of Animal Radiology and Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Tatsuro Nakamura
- Department of Animal Radiology and Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Shinya Takenouchi
- Department of Animal Radiology and Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Akane Hayashi
- Department of Animal Radiology and Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Keisuke Omori
- Department of Animal Radiology and Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Takahisa Murata
- Department of Animal Radiology and Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
- * E-mail:
| |
Collapse
|
14
|
Kobayashi Y, Nakamura T, Miyazaki Y, Omori K, Kobayashi K, Murata T. [A mechanisms of drug resistance in tumor endothelial cells]. Nihon Yakurigaku Zasshi 2020; 155:351. [PMID: 32879178 DOI: 10.1254/fpj.20018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
15
|
Tsuchihashi H, Naruse T, Yanamoto S, Okuyama K, Furukawa K, Omori K, Umeda M. Selective inhibition of PI3K110α as a novel therapeutic strategy for cetuximab‑resistant oral squamous cell carcinoma. Oncol Rep 2020; 44:863-872. [PMID: 32705230 PMCID: PMC7388413 DOI: 10.3892/or.2020.7674] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 03/31/2020] [Indexed: 12/12/2022] Open
Abstract
High expression of the 110 kDa catalytic subunit of the class IA PI3K (PI3Kp110α) may play an important role in cetuximab resistance exhibited by both colorectal cancer and head and neck squamous cell carcinoma. Therefore, the present study aimed to examine the association between the expression of proteins in the PI3Kp110α pathway and cetuximab resistance, and the antitumor effects of alpelisib (PI3K inhibitor) and cetuximab in oral squamous cell carcinoma (OSCC) cells. The association between PI3Kp110α protein expression levels and the tumor response to cetuximab was determined using immunohistochemistry. OSCC cells were treated with alpelisib, cetuximab, or in combination, and the effects were examined in vitro and in vivo. PI3Kp110α protein expression was significantly associated with the tumor response to cetuximab (P<0.05) and 1-year progression-free survival and overall survival (P<0.05). Combined treatment of alpelisib and cetuximab resulted in enhanced antitumor effects in vitro compared with either agent administered alone. In particular, the expression level of N-cadherin, an epithelial-mesenchymal transition-related protein, was decreased, suggesting that the invasion potential of cetuximab-resistant cells decreased. Furthermore, the expression of proteins in the PI3K pathway were decreased in tumors from mice with OSCC xenografts treated with alpelisib and cetuximab in combination. These results indicate that novel regimens of systemic therapy (such as chemotherapy), with combinations of cetuximab and alpelisib, may be beneficial for patients with cetuximab-resistant OSCC.
Collapse
Affiliation(s)
- Hiroki Tsuchihashi
- Department of Clinical Oral Oncology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852‑8588, Japan
| | - Tomofumi Naruse
- Department of Clinical Oral Oncology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852‑8588, Japan
| | - Souichi Yanamoto
- Department of Clinical Oral Oncology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852‑8588, Japan
| | - Kohei Okuyama
- Department of Clinical Oral Oncology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852‑8588, Japan
| | - Kohei Furukawa
- Department of Clinical Oral Oncology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852‑8588, Japan
| | - Keisuke Omori
- Department of Clinical Oral Oncology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852‑8588, Japan
| | - Masahiro Umeda
- Department of Clinical Oral Oncology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852‑8588, Japan
| |
Collapse
|
16
|
Yanamoto S, Soutome S, Tsuda S, Morishita K, Hayashida S, Harata S, Murata M, Omori K, Rokutanda S, Umeda M. Inhibitory effect of topical antibiotics/antiseptics administration on bacterial growth in the open wound of the jawbone surgery: Randomized controlled, preliminary study. J Dent Sci 2020; 16:154-159. [PMID: 33384792 PMCID: PMC7770304 DOI: 10.1016/j.jds.2020.06.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 06/19/2020] [Indexed: 11/28/2022] Open
Abstract
Background/purpose TThe bone cavities after extirpation of cysts or tumor of the jawbone requires the insertion of gauze containing various antibiotics/antiseptics to minimize the risk of pain, bleeding, and surgical site infection (SSI). However, there have been few reports on the efficacy of topical administration of antibiotics/antiseptics to an open wound of the jawbone. To compare the inhibitory effects of topical povidone-iodine gel and tetracycline ointment on the jawbone wound bacterial growth after extirpation of cyst or tumor. Materials and methods This is a preliminary, randomized controlled, open-labeled trial. Eighteen patients were randomly assigned into two groups. In povidone-iodine (PI) group, gauze mixed with povidone-iodine gel was inserted into the bone cavity wound, and in tetracycline (TC) group gauze mixed with tetracycline ointment was inserted after extirpation of cyst or tumor of the jaw bone. In both groups, gauze was removed 48 h after surgery, and examined by bacterial culture and real-time polymerase chain reaction (PCR) using primers detecting total bacteria and MRSA. Results The topical application of tetracycline ointment was superior to that of povidone-iodine gel concerning inhibitory effects of total bacteria and methicillin-resistant Staphylococcus aureus (MRSA). Conclusion This preliminary study suggests that the insertion of gauze mixed with tetracycline ointment is recommended for bone wounds after extirpation of cyst or tumor of the oral cavity.
Collapse
Affiliation(s)
- Souichi Yanamoto
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Sakiko Soutome
- Department of Oral Health, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Shoma Tsuda
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kota Morishita
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Saki Hayashida
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Saori Harata
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Maho Murata
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Keisuke Omori
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Satoshi Rokutanda
- Department of Dentistry and Oral Surgery, Juko Memorial Nagasaki Hospital, Nagasaki, Japan
| | - Masahiro Umeda
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| |
Collapse
|
17
|
Arai N, Kan H, Ogawa M, Uchida Y, Takizawa M, Omori K, Miyati T, Kasai H, Kunitomo H, Shibamoto Y. Visualization of Nigrosome 1 from the Viewpoint of Anatomic Structure. AJNR Am J Neuroradiol 2019; 41:86-91. [PMID: 31806600 DOI: 10.3174/ajnr.a6338] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Accepted: 10/10/2019] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Parkinson disease is related to neurodegeneration and iron deposition in the substantia nigra pars compacta and nigrosome 1. However, visualization of nigrosome 1 via MR imaging is poor owing to the bilateral asymmetry, regardless of whether it is healthy. We focused on the magic angle and susceptibility effect and evaluated the anatomic slant structure of nigrosome 1 by tilting subjects' heads in the B0 direction. MATERIALS AND METHODS To investigate the effectiveness of the magic angle, we tilted the volunteers' heads to the right and left in the B0 direction or not at all for evaluating correlations between the degree of head tilting and visualization of the right nigrosome 1 and left nigrosome 1 using 3D spoiled gradient-echo sequences with multiecho acquisitions. We evaluated the susceptibility of nigrosome 1 and the local field using quantitative susceptibility mapping to assess static magnetic field inhomogeneity. RESULTS The heads tilted to the right and left showed significantly higher contrasts of nigrosome 1 and the substantia nigra pars compacta than the nontilted heads. No significant differences were observed in the visualization and susceptibility between the right nigrosome 1 and left nigrosome 1 for each head tilt. The effect of the magic angle was remarkable in the nontilted heads. This finding was supported by quantitative susceptibility mapping because the anatomic slant structure of nigrosome 1 was coherent between the axis of nigrosome 1 and the magic angle. CONCLUSIONS The asymmetric visualization of nigrosome 1 is affected by the magic angle and susceptibility. The anatomic slant structure of nigrosome 1 causes these challenges in visualization.
Collapse
Affiliation(s)
- N Arai
- From the Department of Radiology (N.A., H. Kasai, H. Kunitomo), Nagoya City University Hospital, Nagoya, Japan
| | - H Kan
- Radiological and Medical Laboratory Sciences (H. Kan), Nagoya University Graduate School of Medicine, Nagoya, Japan.,Departments of Radiology (H. Kan, M.O., Y.S.)
| | - M Ogawa
- Departments of Radiology (H. Kan, M.O., Y.S.)
| | - Y Uchida
- Neurology (Y.U.), Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - M Takizawa
- Healthcare Business Unit (M.T., K.O.), Hitachi Ltd, Tokyo, Japan
| | - K Omori
- Healthcare Business Unit (M.T., K.O.), Hitachi Ltd, Tokyo, Japan
| | - T Miyati
- Division of Health Sciences, Graduate School of Medical Science (T.M.), Kanazawa University, Kanazawa, Japan
| | - H Kasai
- From the Department of Radiology (N.A., H. Kasai, H. Kunitomo), Nagoya City University Hospital, Nagoya, Japan
| | - H Kunitomo
- From the Department of Radiology (N.A., H. Kasai, H. Kunitomo), Nagoya City University Hospital, Nagoya, Japan
| | - Y Shibamoto
- Departments of Radiology (H. Kan, M.O., Y.S.)
| |
Collapse
|
18
|
Yanagawa Y, Oode Y, Adegawa Y, Muramatsu KI, Kushida Y, Nagasawa H, Takeuchi I, Jitsuiki K, Ohsaka H, Omori K. Japanese civilian and US military interaction in the evacuation of casualties from Camp Fuji. BMJ Mil Health 2019; 166:e73-e74. [PMID: 31256003 DOI: 10.1136/jramc-2019-001247] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 06/14/2019] [Accepted: 06/18/2019] [Indexed: 11/04/2022]
Abstract
Historically, if US soldiers at Camp Fuji become severely ill or suffer trauma, they are transported by the ground ambulance, as the doctor-led air ambulance in eastern Shizuoka has never been permitted to land at Camp Fuji. However, it is widely recognised that severely ill or traumatised patients require time-dependent medical management. It was therefore agreed to undertake a joint exercise between the US medical assets of Camp Fuji and the doctor helicopters in eastern Shizuoka prefecture in evacuating a simulated severely ill or traumatised US soldier. The aim of this article is to describe the background and rationale between this collaboration between the civilian Japanese air ambulance and the US medical assets in Camp Fuji.
Collapse
Affiliation(s)
- Youichi Yanagawa
- Acute Critical Care Medicine, Juntendo Daigaku Igakubu Fuzoku Shizuoka Byoin, Izunokuni, Japan
| | - Y Oode
- Acute Critical Care Medicine, Juntendo Daigaku Igakubu Fuzoku Shizuoka Byoin, Izunokuni, Japan
| | - Y Adegawa
- Acute Critical Care Medicine, Juntendo Daigaku Igakubu Fuzoku Shizuoka Byoin, Izunokuni, Japan
| | - K-I Muramatsu
- Acute Critical Care Medicine, Juntendo Daigaku Igakubu Fuzoku Shizuoka Byoin, Izunokuni, Japan
| | - Y Kushida
- Acute Critical Care Medicine, Juntendo Daigaku Igakubu Fuzoku Shizuoka Byoin, Izunokuni, Japan
| | - H Nagasawa
- Acute Critical Care Medicine, Juntendo Daigaku Igakubu Fuzoku Shizuoka Byoin, Izunokuni, Japan
| | - I Takeuchi
- Acute Critical Care Medicine, Juntendo Daigaku Igakubu Fuzoku Shizuoka Byoin, Izunokuni, Japan
| | - K Jitsuiki
- Acute Critical Care Medicine, Juntendo Daigaku Igakubu Fuzoku Shizuoka Byoin, Izunokuni, Japan
| | - H Ohsaka
- Acute Critical Care Medicine, Juntendo Daigaku Igakubu Fuzoku Shizuoka Byoin, Izunokuni, Japan
| | - K Omori
- Acute Critical Care Medicine, Juntendo Daigaku Igakubu Fuzoku Shizuoka Byoin, Izunokuni, Japan
| |
Collapse
|
19
|
Abstract
Tumor tissue is composed of tumor cells and surrounding non-tumor endothelial and immune cells, collectively known as the tumor microenvironment. Tumor cells manipulate tumor microenvironment to obtain sufficient oxygen and nutrient supply, and evade anti-tumor immunosurveillance. Various types of signaling molecules, including cytokines, chemokines, growth factors, and lipid mediators, are secreted, which co-operate to make up the complex tumor microenvironment. Prostaglandins, cyclooxygenase metabolites of arachidonic acid, are abundantly produced in tumor tissues. Ever since treatment with nonsteroidal anti-inflammatory drugs showed anti-tumor effect in mouse models and human patients by inhibiting whole prostaglandin production, investigators have focused on the importance of prostaglandins in tumor malignancies. However, most studies that followed focused on the role of an eminent prostaglandin, prostaglandin E2, in tumor onset, growth, and metastasis. It remained unclear how other prostaglandin species affected tumor malignancies. Recently, we identified prostaglandin D2, a well-known sleep-inducing prostaglandin, as a factor with strong anti-angiogenic and anti-tumor properties, in genetically modified mice. In this review, we summarize recent studies focusing on the importance of prostaglandins and their metabolites in the tumor microenvironment.
Collapse
Affiliation(s)
- Koji Kobayashi
- Department of Animal Radiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Keisuke Omori
- Department of Animal Radiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Takahisa Murata
- Department of Animal Radiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan.
| |
Collapse
|
20
|
Horikami D, Toya N, Kobayashi K, Omori K, Nagata N, Murata T. L-PGDS-derived PGD2
attenuates acute lung injury by enhancing endothelial barrier formation. J Pathol 2019; 248:280-290. [DOI: 10.1002/path.5253] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 12/31/2018] [Accepted: 02/04/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Daiki Horikami
- Department of Animal Radiology; Graduate School of Agriculture and Life Sciences, The University of Tokyo; Tokyo Japan
| | - Naoki Toya
- Department of Animal Radiology; Graduate School of Agriculture and Life Sciences, The University of Tokyo; Tokyo Japan
| | - Koji Kobayashi
- Department of Animal Radiology; Graduate School of Agriculture and Life Sciences, The University of Tokyo; Tokyo Japan
| | - Keisuke Omori
- Department of Animal Radiology; Graduate School of Agriculture and Life Sciences, The University of Tokyo; Tokyo Japan
| | - Nanae Nagata
- Department of Animal Radiology; Graduate School of Agriculture and Life Sciences, The University of Tokyo; Tokyo Japan
| | - Takahisa Murata
- Department of Animal Radiology; Graduate School of Agriculture and Life Sciences, The University of Tokyo; Tokyo Japan
| |
Collapse
|
21
|
Omori K, Nagata N, Kurata K, Fukushima Y, Sekihachi E, Fujii N, Namba-Hamano T, Takabatake Y, Fruttiger M, Nagasawa T, Uemura A, Murata T. Inhibition of stromal cell-derived factor-1α/CXCR4 signaling restores the blood-retina barrier in pericyte-deficient mouse retinas. JCI Insight 2018; 3:120706. [PMID: 30518679 DOI: 10.1172/jci.insight.120706] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 10/31/2018] [Indexed: 01/19/2023] Open
Abstract
In diabetic retinopathy (DR), pericyte dropout from capillary walls is believed to cause the breakdown of the blood-retina barrier (BRB), which subsequently leads to vision-threatening retinal edema. While various proinflammatory cytokines and chemokines are upregulated in eyes with DR, their distinct contributions to disease progression remain elusive. Here, we evaluated roles of stromal cell-derived factor-1α (SDF-1α) and its receptor CXCR4 in the BRB breakdown initiated by pericyte deficiency. After inhibition of pericyte recruitment to developing retinal vessels in neonatal mice, endothelial cells (ECs) upregulated the expression of SDF-1α. Administration of CXCR4 antagonists, or EC-specific disruption of the CXCR4 gene, similarly restored the BRB integrity, even in the absence of pericyte coverage. Furthermore, CXCR4 inhibition significantly decreased both the expression levels of proinflammatory genes (P < 0.05) and the infiltration of macrophages (P < 0.05) into pericyte-deficient retinas. Taken together, EC-derived SDF-1α induced by pericyte deficiency exacerbated inflammation through CXCR4 in an autocrine or paracrine manner and thereby induced macrophage infiltration and BRB breakdown. These findings suggest that the SDF-1α/CXCR4 signaling pathway may be a potential therapeutic target in DR.
Collapse
Affiliation(s)
- Keisuke Omori
- Department of Animal Radiology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Nanae Nagata
- Department of Animal Radiology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Kaori Kurata
- Department of Retinal Vascular Biology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Yoko Fukushima
- Department of Ophthalmology, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Erika Sekihachi
- Department of Animal Radiology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Nobutaka Fujii
- Laboratory of Bioorganic Medicinal Chemistry and Chemogenomics, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Tomoko Namba-Hamano
- Department of Nephrology, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Yoshitsugu Takabatake
- Department of Nephrology, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Marcus Fruttiger
- UCL Institute of Ophthalmology, University College London, London, United Kingdom
| | - Takashi Nagasawa
- Laboratory of Stem Cell Biology and Developmental Immunology, Graduate School of Frontier Biosciences and Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Akiyoshi Uemura
- Department of Retinal Vascular Biology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Takahisa Murata
- Department of Animal Radiology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| |
Collapse
|
22
|
Omori K, Ito A, Mun I, Yamashita N, Ibano K, Lee H, Ueda Y. First principle calculations of energy of agglomerated helium in the period 6 elements. Nuclear Materials and Energy 2018. [DOI: 10.1016/j.nme.2018.07.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
23
|
Yamashita N, Omori K, Kimura Y, Hinoki T, Ibano K, Lee H, Ueda Y. Surface morphology changes of silicon carbide by helium plasma irradiation. Nuclear Materials and Energy 2018. [DOI: 10.1016/j.nme.2018.06.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
24
|
Rokutanda S, Yamada S, Yanamoto S, Omori K, Fujimura Y, Morita Y, Rokutanda H, Kohara H, Fujishita A, Nakamura T, Yoshimi T, Yoshida N, Umeda M. Comparison of osseous healing after sagittal split ramus osteotomy and intraoral vertical ramus osteotomy. Int J Oral Maxillofac Surg 2018; 47:1316-1321. [PMID: 29843949 DOI: 10.1016/j.ijom.2018.05.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 03/16/2018] [Accepted: 05/09/2018] [Indexed: 10/16/2022]
Abstract
The sagittal split ramus osteotomy (SSRO) is generally associated with greater postoperative stability than the intraoral vertical ramus osteotomy (IVRO); however, it entails a risk of inferior alveolar nerve damage. In contrast, IVRO has the disadvantages of slow postoperative osseous healing and projection of the antegonial notch, but inferior alveolar nerve damage is believed to be less likely. The purposes of this study were to compare the osseous healing processes associated with SSRO and IVRO and to investigate changes in mandibular width after IVRO in 29 patients undergoing mandibular setback. On computed tomography images, osseous healing was similar in patients undergoing SSRO and IVRO at 1year after surgery. Projection of the antegonial notch occurred after IVRO, but returned to the preoperative state within 1year. The results of the study indicate that IVRO is equivalent to SSRO with regard to both bone healing and morphological recovery of the mandible.
Collapse
Affiliation(s)
- S Rokutanda
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki City, Nagasaki, Japan; Department of Oral and Maxillofacial Surgery, Juko Memorial Nagasaki Hospital, Nagasaki City, Nagasaki, Japan.
| | - S Yamada
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto City, Nagano, Japan
| | - S Yanamoto
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki City, Nagasaki, Japan
| | - K Omori
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki City, Nagasaki, Japan
| | - Y Fujimura
- Department of Orthodontics and Dentofacial Orthopaedics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki City, Nagasaki, Japan
| | - Y Morita
- Department of Orthodontics and Dentofacial Orthopaedics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki City, Nagasaki, Japan
| | - H Rokutanda
- Department of Orthodontics and Dentofacial Orthopaedics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki City, Nagasaki, Japan
| | - H Kohara
- Department of Orthodontics and Dentofacial Orthopaedics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki City, Nagasaki, Japan
| | - A Fujishita
- Department of Orthodontics and Dentofacial Orthopaedics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki City, Nagasaki, Japan
| | - T Nakamura
- Department of Orthodontics and Dentofacial Orthopaedics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki City, Nagasaki, Japan
| | - T Yoshimi
- Department of Orthodontics and Dentofacial Orthopaedics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki City, Nagasaki, Japan
| | - N Yoshida
- Department of Orthodontics and Dentofacial Orthopaedics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki City, Nagasaki, Japan
| | - M Umeda
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki City, Nagasaki, Japan
| |
Collapse
|
25
|
Komatsu H, Rawson J, Barriga A, Gonzalez N, Mendez D, Li J, Omori K, Kandeel F, Mullen Y. Posttransplant oxygen inhalation improves the outcome of subcutaneous islet transplantation: A promising clinical alternative to the conventional intrahepatic site. Am J Transplant 2018; 18:832-842. [PMID: 28898528 DOI: 10.1111/ajt.14497] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [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: 04/27/2017] [Revised: 08/29/2017] [Accepted: 09/06/2017] [Indexed: 01/25/2023]
Abstract
Subcutaneous tissue is a promising site for islet transplantation, due to its large area and accessibility, which allows minimally invasive procedures for transplantation, graft monitoring, and removal of malignancies as needed. However, relative to the conventional intrahepatic transplantation site, the subcutaneous site requires a large number of islets to achieve engraftment success and diabetes reversal, due to hypoxia and low vascularity. We report that the efficiency of subcutaneous islet transplantation in a Lewis rat model is significantly improved by treating recipients with inhaled 50% oxygen, in conjunction with prevascularization of the graft bed by agarose-basic fibroblast growth factor. Administration of 50% oxygen increased oxygen tension in the subcutaneous site to 140 mm Hg, compared to 45 mm Hg under ambient air. In vitro, islets cultured under 140 mm Hg oxygen showed reduced central necrosis and increased insulin release, compared to those maintained in 45 mm Hg oxygen. Six hundred syngeneic islets subcutaneously transplanted into the prevascularized graft bed reversed diabetes when combined with postoperative 50% oxygen inhalation for 3 days, a number comparable to that required for intrahepatic transplantation; in the absence of oxygen treatment, diabetes was not reversed. Thus, we show oxygen inhalation to be a simple and promising approach to successfully establishing subcutaneous islet transplantation.
Collapse
Affiliation(s)
- H Komatsu
- Division of Developmental and Translational Diabetes and Endocrinology Research, Department of Diabetes and Metabolic Research, Beckman Research Institute of City of Hope, Duarte, CA, USA
| | - J Rawson
- Division of Developmental and Translational Diabetes and Endocrinology Research, Department of Diabetes and Metabolic Research, Beckman Research Institute of City of Hope, Duarte, CA, USA
| | - A Barriga
- Division of Developmental and Translational Diabetes and Endocrinology Research, Department of Diabetes and Metabolic Research, Beckman Research Institute of City of Hope, Duarte, CA, USA
| | - N Gonzalez
- Division of Developmental and Translational Diabetes and Endocrinology Research, Department of Diabetes and Metabolic Research, Beckman Research Institute of City of Hope, Duarte, CA, USA
| | - D Mendez
- Division of Developmental and Translational Diabetes and Endocrinology Research, Department of Diabetes and Metabolic Research, Beckman Research Institute of City of Hope, Duarte, CA, USA
| | - J Li
- Division of Developmental and Translational Diabetes and Endocrinology Research, Department of Diabetes and Metabolic Research, Beckman Research Institute of City of Hope, Duarte, CA, USA
| | - K Omori
- Division of Developmental and Translational Diabetes and Endocrinology Research, Department of Diabetes and Metabolic Research, Beckman Research Institute of City of Hope, Duarte, CA, USA
| | - F Kandeel
- Division of Developmental and Translational Diabetes and Endocrinology Research, Department of Diabetes and Metabolic Research, Beckman Research Institute of City of Hope, Duarte, CA, USA
| | - Y Mullen
- Division of Developmental and Translational Diabetes and Endocrinology Research, Department of Diabetes and Metabolic Research, Beckman Research Institute of City of Hope, Duarte, CA, USA
| |
Collapse
|
26
|
Omori K, Morikawa T, Kunita A, Nakamura T, Aritake K, Urade Y, Fukayama M, Murata T. Lipocalin-type prostaglandin D synthase-derived PGD 2 attenuates malignant properties of tumor endothelial cells. J Pathol 2017; 244:84-96. [PMID: 29124765 DOI: 10.1002/path.4993] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 08/10/2017] [Accepted: 09/12/2017] [Indexed: 11/06/2022]
Abstract
Endothelial cells (ECs) are a key component of the tumor microenvironment. They have abnormal characteristics compared to the ECs in normal tissues. Here, we found a marked increase in lipocalin-type prostaglandin D synthase (L-PGDS) mRNA (Ptgds) expression in ECs isolated from mouse melanoma. Immunostaining of mouse melanoma revealed expression of L-PGDS protein in the ECs. In situ hybridization also showed L-PGDS (PTGDS) mRNA expression in the ECs of human melanoma and oral squamous cell carcinoma. In vitro experiments showed that stimulation with tumor cell-derived IL-1 and TNF-α increased L-PGDS mRNA expression and its product prostaglandin D2 (PGD2 ) in human normal ECs. We also investigated the contribution of L-PGDS-PGD2 to tumor growth and vascularization. Systemic or EC-specific deficiency of L-PGDS accelerated the growth of melanoma in mice, whereas treatment with an agonist of the PGD2 receptor, DP1 (BW245C, 0.1 mg/kg, injected intraperitoneally twice daily), attenuated it. Morphological and in vivo studies showed that endothelial L-PGDS deficiency resulted in functional changes of tumor ECs such as accelerated vascular hyperpermeability, angiogenesis, and endothelial-to-mesenchymal transition (EndMT) in tumors, which in turn reduced tumor cell apoptosis. These observations suggest that tumor cell-derived inflammatory cytokines increase L-PGDS expression and subsequent PGD2 production in the tumor ECs. This PGD2 acts as a negative regulator of the tumorigenic changes in tumor ECs. Copyright © 2017 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
Collapse
Affiliation(s)
- Keisuke Omori
- Department of Animal Radiology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Teppei Morikawa
- Department of Pathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Akiko Kunita
- Department of Pathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Tatsuro Nakamura
- Department of Animal Radiology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Kosuke Aritake
- Intemational Institute for Integrative Sleep Medicine, University of Tsukuba, Tsukuba, Japan
| | - Yoshihiro Urade
- Intemational Institute for Integrative Sleep Medicine, University of Tsukuba, Tsukuba, Japan
| | - Masashi Fukayama
- Department of Pathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Takahisa Murata
- Department of Animal Radiology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| |
Collapse
|
27
|
|
28
|
Okuyama K, Fujita S, Yanamoto S, Naruse T, Sakamoto Y, Kawakita A, Omori K, Tsuchihashi H, Umeda M. Unusual recurrent tongue spindle cell carcinoma with marked anaplasia occurring at the site of glossectomy for a well-differentiated squamous cell carcinoma: A case report. Mol Clin Oncol 2017; 7:341-346. [PMID: 28781811 PMCID: PMC5530309 DOI: 10.3892/mco.2017.1323] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 05/17/2017] [Indexed: 01/07/2023] Open
Abstract
Spindle cell carcinoma (SpCC), which predominantly arises in the oral, pharyngeal and laryngeal mucosal tissues, is composed of a mixture of squamous and sarcomatoid components. The present study describes the case of a 62-year-old woman with SpCC recurrence 4 years after an initial surgery to remove a well-differentiated primary squamous cell carcinoma (SCC) of the tongue. The recurrent tumor was spherical and located deep within the tongue tissue, which differs from the typical manifestation of ulcerated masses of the mucosa. The majority of cases of recurrence involving SpCC are associated with radiotherapeutic treatment of the primary malignancy; however, the patient in the present study had not received postoperative radiotherapy for SCC. Furthermore, the recurrent tumor in the present case exhibited marked anaplasia and sarcomatoid features, and the absence of SCC elements upon biopsy rendered histological diagnosis difficult. In summary, the present findings suggest that immunohistochemical examination and identification of SCC components are essential for ensuring the accuracy of the histological diagnosis of recurrent SpCC following a primary epithelial malignancy.
Collapse
Affiliation(s)
- Kohei Okuyama
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan
| | - Shuichi Fujita
- Department of Oral Pathology and Bone Metabolism, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan
| | - Souichi Yanamoto
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan
| | - Tomofumi Naruse
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan
| | - Yuki Sakamoto
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan
| | - Akiko Kawakita
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan
| | - Keisuke Omori
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan
| | - Hiroki Tsuchihashi
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan
| | - Masahiro Umeda
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan
| |
Collapse
|
29
|
Naruse T, Yanamoto S, Okuyama K, Yamashita K, Omori K, Nakao Y, Yamada SI, Umeda M. Therapeutic implication of mTORC2 in oral squamous cell carcinoma. Oral Oncol 2016; 65:23-32. [PMID: 28109464 DOI: 10.1016/j.oraloncology.2016.12.012] [Citation(s) in RCA: 11] [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: 07/26/2016] [Revised: 11/09/2016] [Accepted: 12/14/2016] [Indexed: 12/16/2022]
Abstract
The aim of the present study was to clarify the association of mTORC2 expression with the cancer progression and the anti-tumor effects of Torin-1 alone and combined treatment with Cetuximab in OSCC cells. The expressions of Rictor and SGK1 were immunohistochemically evaluated and the relationships between the expressions of molecular markers and clinicopathological factors were determined. Moreover, OSCC cells were treated with Torin-1, Cetuximab or combined agents, and anti-tumor effects of OSCC cells were examined in vitro and in vivo. Rictor and SGK1 expressions were significantly associated with tumor stage and pattern of invasion in OSCC sections (P<0.05 and P<0.01, respectively). Treatment of OSCC cell lines with Torin-1 resulted in dose and time-dependent inhibition of proliferation with decrease of phosphorylation on downstream molecules. Combined treatment with Torin-1 and Cetuximab resulted in enhanced anti-tumor effects in vitro compared with either agent alone. Furthermore, treatment of mice bearing OSCC xenografts with Torin-1 and Cetuximab also demonstrated a remarked growth inhibition of tumor volumes. The results suggested that new regimens of systemic therapy combined with Cetuximab and Torin-1 may be useful for very advanced OSCC patients.
Collapse
Affiliation(s)
- Tomofumi Naruse
- Department of Clinical Oral Oncology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki 852-8588, Japan.
| | - Souichi Yanamoto
- Department of Clinical Oral Oncology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki 852-8588, Japan
| | - Kohei Okuyama
- Department of Clinical Oral Oncology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki 852-8588, Japan
| | - Kentaro Yamashita
- Department of Clinical Oral Oncology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki 852-8588, Japan
| | - Keisuke Omori
- Department of Clinical Oral Oncology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki 852-8588, Japan
| | - Yuji Nakao
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Nagano 390-8621, Japan
| | - Shin-Ichi Yamada
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Nagano 390-8621, Japan
| | - Masahiro Umeda
- Department of Clinical Oral Oncology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki 852-8588, Japan
| |
Collapse
|
30
|
Kida T, Ayabe S, Omori K, Nakamura T, Maehara T, Aritake K, Urade Y, Murata T. Prostaglandin D2 Attenuates Bleomycin-Induced Lung Inflammation and Pulmonary Fibrosis. PLoS One 2016; 11:e0167729. [PMID: 27992456 PMCID: PMC5167321 DOI: 10.1371/journal.pone.0167729] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Accepted: 11/19/2016] [Indexed: 01/08/2023] Open
Abstract
Pulmonary fibrosis is a progressive and fatal lung disease with limited therapeutic options. Although it is well known that lipid mediator prostaglandins are involved in the development of pulmonary fibrosis, the role of prostaglandin D2 (PGD2) remains unknown. Here, we investigated whether genetic disruption of hematopoietic PGD synthase (H-PGDS) affects the bleomycin-induced lung inflammation and pulmonary fibrosis in mouse. Compared with H-PGDS naïve (WT) mice, H-PGDS-deficient mice (H-PGDS-/-) represented increased collagen deposition in lungs 14 days after the bleomycin injection. The enhanced fibrotic response was accompanied by an increased mRNA expression of inflammatory mediators, including tumor necrosis factor-α, monocyte chemoattractant protein-1, and cyclooxygenase-2 on day 3. H-PGDS deficiency also increased vascular permeability on day 3 and infiltration of neutrophils and macrophages in lungs on day 3 and 7. Immunostaining showed that the neutrophils and macrophages expressed H-PGDS, and its mRNA expression was increased on day 3and 7 in WT lungs. These observations suggest that H-PGDS-derived PGD2 plays a protective role in bleomycin-induced lung inflammation and pulmonary fibrosis.
Collapse
Affiliation(s)
- Taiki Kida
- Department of Animal Radiology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Shinya Ayabe
- Department of Animal Radiology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Keisuke Omori
- Department of Animal Radiology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Tatsuro Nakamura
- Department of Animal Radiology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Toko Maehara
- Department of Animal Radiology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Kosuke Aritake
- International Institute for Integrative Sleep Medicine, University of Tsukuba, Ibaraki, Japan
| | - Yoshihiro Urade
- International Institute for Integrative Sleep Medicine, University of Tsukuba, Ibaraki, Japan
| | - Takahisa Murata
- Department of Animal Radiology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| |
Collapse
|
31
|
Ito S, Iwao H, Sakata J, Inoue M, Omori K, Yanagisawa Y. Simultaneous spawning by female stream goby Rhinogobius sp. and the association with brood cannibalism by nesting males. J Fish Biol 2016; 89:1592-1602. [PMID: 27325563 DOI: 10.1111/jfb.13060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 12/28/2015] [Accepted: 05/11/2016] [Indexed: 06/06/2023]
Abstract
A laboratory experiment was conducted by varying the undersurface area of nesting substratum and the number of females in an experimental tank to elucidate the determinants of the mating pattern in the stream goby, Rhinogobius sp. cross-band type. Males with larger nests tended to attract two or more females to their nest in a tank. Moreover, males spawned simultaneously with multiple females and entire brood cannibalism by males was rarely observed under a female-biased sex ratio. When males spawned with a single female with low fecundity, however, entire brood cannibalism occurred at a high frequency, suggesting that a male guarding a nest with fewer eggs consumes the brood. Therefore, spawning behaviour of females that leads to a large egg mass would decrease the risk of entire brood cannibalism. In this species, simultaneous spawning by multiple females in a nest serves as a female counter-measure against entire brood cannibalism. These results suggest that a conflict of interest between the sexes through brood cannibalism is a major determinant of simultaneous spawning.
Collapse
Affiliation(s)
- S Ito
- Hokkaido National Fisheries Research Institute, Fisheries Research Agency, 116 Katsurakoi, Kushiro, Hokkaido, 085-0802, Japan
| | - H Iwao
- Department of Biology, Ehime University, 2-5 Bunkyo-cho, Matsuyama, 790-8577, Japan
| | - J Sakata
- Department of Biology, Ehime University, 2-5 Bunkyo-cho, Matsuyama, 790-8577, Japan
| | - M Inoue
- Department of Biology, Ehime University, 2-5 Bunkyo-cho, Matsuyama, 790-8577, Japan
| | - K Omori
- Center for Marine Environmental Studies, Ehime University, 2-5 Bunkyo-cho, Matsuyama, 790-8577, Japan
| | - Y Yanagisawa
- Department of Biology, Ehime University, 2-5 Bunkyo-cho, Matsuyama, 790-8577, Japan
| |
Collapse
|
32
|
Kobayashi K, Horikami D, Omori K, Nakamura T, Yamazaki A, Maeda S, Murata T. Thromboxane A2 exacerbates acute lung injury via promoting edema formation. Sci Rep 2016; 6:32109. [PMID: 27562142 PMCID: PMC4999811 DOI: 10.1038/srep32109] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Accepted: 08/02/2016] [Indexed: 01/11/2023] Open
Abstract
Thromboxane A2 (TXA2) is produced in the lungs of patients suffering from acute lung injury (ALI). We assessed its contribution in disease progression using three different ALI mouse models. The administration of hydrochloric acid (HCl) or oleic acid (OA)+ lipopolysaccharide (LPS) caused tissue edema and neutrophil infiltration with TXA2 production in the lungs of the experimental mice. The administration of LPS induced only neutrophil accumulation without TXA2 production. Pretreatment with T prostanoid receptor (TP) antagonist attenuated the tissue edema but not neutrophil infiltration in these models. Intravital imaging and immunostaining demonstrated that administration of TP agonist caused vascular hyper-permeability by disrupting the endothelial barrier formation in the mouse ear. In vitro experiments showed that TP-stimulation disrupted the endothelial adherens junction, and it was inhibited by Ca2+ channel blockade or Rho kinase inhibition. Thus endogenous TXA2 exacerbates ALI, and its blockade attenuates it by modulating the extent of lung edema. This can be explained by the endothelial hyper-permeability caused by the activation of TXA2-TP axis, via Ca2+- and Rho kinase-dependent signaling.
Collapse
Affiliation(s)
- Koji Kobayashi
- Department of Animal Radiology, Graduate school of Agriculture and Life Sciences, The University of Tokyo, Japan
| | - Daiki Horikami
- Department of Animal Radiology, Graduate school of Agriculture and Life Sciences, The University of Tokyo, Japan
| | - Keisuke Omori
- Department of Animal Radiology, Graduate school of Agriculture and Life Sciences, The University of Tokyo, Japan
| | - Tatsuro Nakamura
- Department of Animal Radiology, Graduate school of Agriculture and Life Sciences, The University of Tokyo, Japan
| | - Arisa Yamazaki
- Department of Animal Radiology, Graduate school of Agriculture and Life Sciences, The University of Tokyo, Japan
| | - Shingo Maeda
- Department of Animal Radiology, Graduate school of Agriculture and Life Sciences, The University of Tokyo, Japan
| | - Takahisa Murata
- Department of Animal Radiology, Graduate school of Agriculture and Life Sciences, The University of Tokyo, Japan
| |
Collapse
|
33
|
Omori K, Murata T. [Characteristics of tumor endothelial cells]. Nihon Yakurigaku Zasshi 2015; 146:174. [PMID: 26354018 DOI: 10.1254/fpj.146.174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
34
|
Ashina K, Tsubosaka Y, Nakamura T, Omori K, Kobayashi K, Hori M, Ozaki H, Murata T. Histamine Induces Vascular Hyperpermeability by Increasing Blood Flow and Endothelial Barrier Disruption In Vivo. PLoS One 2015; 10:e0132367. [PMID: 26158531 PMCID: PMC4497677 DOI: 10.1371/journal.pone.0132367] [Citation(s) in RCA: 113] [Impact Index Per Article: 12.6] [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: 03/26/2015] [Accepted: 06/13/2015] [Indexed: 11/18/2022] Open
Abstract
Histamine is a mediator of allergic inflammation released mainly from mast cells. Although histamine strongly increases vascular permeability, its precise mechanism under in vivo situation remains unknown. We here attempted to reveal how histamine induces vascular hyperpermeability focusing on the key regulators of vascular permeability, blood flow and endothelial barrier. Degranulation of mast cells by antigen-stimulation or histamine treatment induced vascular hyperpermeability and tissue swelling in mouse ears. These were abolished by histamine H1 receptor antagonism. Intravital imaging showed that histamine dilated vasculature, increased blood flow, while it induced hyperpermeability in venula. Whole-mount staining showed that histamine disrupted endothelial barrier formation of venula indicated by changes in vascular endothelial cadherin (VE-cadherin) localization at endothelial cell junction. Inhibition of nitric oxide synthesis (NOS) by L-NAME or vasoconstriction by phenylephrine strongly inhibited the histamine-induced blood flow increase and hyperpermeability without changing the VE-cadherin localization. In vitro, measurements of trans-endothelial electrical resistance of human dermal microvascular endothelial cells (HDMECs) showed that histamine disrupted endothelial barrier. Inhibition of protein kinase C (PKC) or Rho-associated protein kinase (ROCK), NOS attenuated the histamine-induced barrier disruption. These observations suggested that histamine increases vascular permeability mainly by nitric oxide (NO)-dependent vascular dilation and subsequent blood flow increase and maybe partially by PKC/ROCK/NO-dependent endothelial barrier disruption.
Collapse
Affiliation(s)
- Kohei Ashina
- Department of Veterinary Pharmacology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo 113–8657, Japan
| | - Yoshiki Tsubosaka
- Department of Animal Radiology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo 113–8657, Japan
| | - Tatsuro Nakamura
- Department of Animal Radiology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo 113–8657, Japan
| | - Keisuke Omori
- Department of Animal Radiology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo 113–8657, Japan
| | - Koji Kobayashi
- Department of Animal Radiology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo 113–8657, Japan
| | - Masatoshi Hori
- Department of Veterinary Pharmacology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo 113–8657, Japan
| | - Hiroshi Ozaki
- Department of Veterinary Pharmacology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo 113–8657, Japan
| | - Takahisa Murata
- Department of Animal Radiology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo 113–8657, Japan
- * E-mail:
| |
Collapse
|
35
|
Ashina K, Tsubosaka Y, Kobayashi K, Omori K, Murata T. VEGF-induced blood flow increase causes vascular hyper-permeability in vivo. Biochem Biophys Res Commun 2015; 464:590-5. [PMID: 26163262 DOI: 10.1016/j.bbrc.2015.07.014] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Accepted: 07/02/2015] [Indexed: 01/06/2023]
Abstract
VEGF is known to cause vascular leak, its detailed mechanisms in vivo remain unclear. Here, we investigated the mechanisms underlying VEGF-induced vascular hyper-permeability focusing on two major regulators of vascular permeability: blood flow and endothelial barrier function. Administration of VEGF caused vascular hyper-permeability and tissue swelling in mouse ears, which were abolished by VEGF receptor-2 blockade. Intravital imaging showed that VEGF dilated ear arteries but not veins, and laser Doppler velocimetry showed that VEGF quickly increased tissue blood flow along with arterial dilation. Whole-mount immunostaining showed that VEGF phosphorylated endothelial nitric oxide synthase (eNOS) at residue Ser1177 and disrupted the alignment of vascular endothelial-cadherin (VE-cadherin) around the endothelial cell borders in mouse ear skin, indicating endothelial nitric oxide (NO) production and barrier disruption. Administration of the nitric oxide synthesis inhibitor, L-NAME, as well as the vasoconstrictor phenylephrine, abolished all VEGF-induced responses, including blood flow increase, dye leakage, and tissue swelling. However, these two treatments did not alter the intracellular localization of VE-cadherin-induced by VEGF. These observations underscore the importance of vascular dilation and, subsequent increase in blood flow, as well as, endothelial barrier disruption in the mechanisms of VEGF-induced vascular hyper-permeability.
Collapse
Affiliation(s)
- Kohei Ashina
- Department of Animal Radiology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Yoshiki Tsubosaka
- Department of Animal Radiology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Koji Kobayashi
- Department of Animal Radiology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Keisuke Omori
- Department of Animal Radiology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Takahisa Murata
- Department of Animal Radiology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan.
| |
Collapse
|
36
|
Omori K, Komatsu H, Rawson J, Mullen Y. Pharmacological strategies for protection of extrahepatic islet transplantation. MINERVA ENDOCRINOL 2015; 40:85-103. [PMID: 25651758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The safety and effectiveness of islet transplantation has been proven through world-wide trials. However, acute and chronic islet loss has hindered the ultimate objective of becoming a widely used treatment option for type 1 diabetes. A large islet loss is attributed, in part, to the liver being a less-than-optimal site for transplantation. Over half of the transplanted islets are destroyed shortly after transplantation due to direct exposure to blood and non-specific inflammation. Successfully engrafted islets are continuously exposed to the liver micro-environment, a unique immune system, low oxygen tension, toxins and high glucose, which is toxic to islets, leading to premature islet dysfunction/death. Investigations have continued to search for alternate sites to transplant islets that provide a better environment for prolonged function and survival. This article gathers courses and conditions that lead to islet loss, from organ procurement through islet transplantation, with special emphasis on hypoxia, oxidative stress, and antigen non-specific inflammation, and reviews strategies using pharmacological agents that have shown effectiveness in protecting islets, including a new treatment approach utilizing siRNA. Pharmacological agents that support islet survival and promote β-cell proliferation are also included. Treatment of donor pancreata and/or islets with these agents should increase the effectiveness of islets transplanted into extrahepatic sites. Furthermore, the development of methods designed to release these agents over an extended period, will further increase their efficacy. This requires the combined efforts of both islet transplant biologists and bioengineers.
Collapse
Affiliation(s)
- K Omori
- Division of Developmental and Translational, Research and Cellular Therapeutics, City of Hope, Diabetes and Metabolism Research Institute, Duarte, CA, USA -
| | | | | | | |
Collapse
|
37
|
Omori K, Kida T, Hori M, Ozaki H, Murata T. Multiple roles of the PGE2 -EP receptor signal in vascular permeability. Br J Pharmacol 2014; 171:4879-89. [PMID: 24923772 DOI: 10.1111/bph.12815] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Revised: 05/25/2014] [Accepted: 05/29/2014] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND AND PURPOSE PGE2 is a major prostanoid that regulates inflammation by stimulating EP1-4 receptors. However, how PGE2 induces an initial inflammatory response to vascular hyper-permeability remains unknown. Here we investigated the role of the PGE2 -EP receptor signal in modulating vascular permeability both in vivo and in vitro. EXPERIMENTAL APPROACH We used a modified Miles assay and intravital microscopy to examine vascular permeability in vivo. Endothelial barrier property was assessed by measuring transendothelial electrical resistance (TER) in vitro. KEY RESULTS Local administration of PGE2 , an EP2 or EP4 receptor agonist into FVB/NJcl mouse ear skin caused vascular leakage, indicated by dye extravasation. Intravital microscopy and laser Doppler blood-flow imaging revealed that these treatments dilated peripheral vessels and increased local blood flow. Pretreatment with the vasoconstrictor phenylephrine inhibited the PGE2 -induced blood flow increase and vascular leakage. In contrast to the EP2 and EP4 receptor agonists, administration of an EP3 receptor agonist suppressed vascular leakage without altering vascular diameter or blood flow. In isolated HUVECs, the EP3 receptor agonist elevated TER and blocked thrombin-induced dextran passage. Inhibiting PKA restored the hypo-permeability induced by the EP3 receptor agonist. CONCLUSIONS AND IMPLICATIONS Activation of the PGE2 -EP2 or -EP4 receptor signal induces vasodilatation in mural cells, resulting in increased local blood flow and hyper-permeability. In contrast, activation of the PGE2 -EP3 receptor signal induces a cAMP-dependent enhancement of the endothelial barrier, leading to hypo-permeability. We provide the first evidence that endothelial cells and mural cells cooperate to modulate vascular permeability.
Collapse
Affiliation(s)
- K Omori
- Department of Animal Radiology, Graduate School of Agriculture and Life Sciences, University of Tokyo, Tokyo, Japan
| | | | | | | | | |
Collapse
|
38
|
Kobayashi K, Sato K, Kida T, Omori K, Hori M, Ozaki H, Murata T. Stromal cell-derived factor-1α/C-X-C chemokine receptor type 4 axis promotes endothelial cell barrier integrity via phosphoinositide 3-kinase and Rac1 activation. Arterioscler Thromb Vasc Biol 2014; 34:1716-22. [PMID: 24925969 DOI: 10.1161/atvbaha.114.303890] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [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: 11/16/2022]
Abstract
OBJECTIVE Although stromal cell-derived factor (SDF)-1αis well known to modulate the mobilization of hematopoietic stem cells and endothelial progenitor cells, its effects on some pre-existing vascular functions remain unknown. We have investigated here the role of SDF-1αsignaling in endothelial barrier function. APPROACH AND RESULTS Treatment with SDF-1α elevated transendothelial electrical resistance and inhibited the dextran hyperpermeability elicited by thrombin in bovine aortic endothelial cells, both indicating an increase in endothelial barrier function. SDF-1α binds to 2 receptors, C-X-C chemokine receptor types 4 and 7 (CXCR4 and CXCR7). Pretreatment with a CXCR4 antagonist or CXCR4 gene depletion by small interfering RNA (siRNA) eliminated SDF-1α-induced endothelial barrier enhancement. In contrast, CXCR7 antagonist or CXCR7 gene depletion by siRNA did not influence SDF-1α-induced barrier enhancement. Pretreatment with a Gi-protein inhibitor, a phosphoinositide 3-kinase (PI3K) inhibitor, or PI3K p110γsubunit gene depletion by siRNA also inhibited SDF-1α-induced barrier enhancement significantly. Western blot analysis revealed that SDF-1α phosphorylated Akt(Ser473) in endothelial cells, suggesting PI3K activation. Immunostaining showed that treatment with SDF-1αformed a cortical actin rim, which was accompanied by Rac1 activation. In vivo, SDF-1αinhibited croton oil-induced vascular leakage indexed by dye extravasation, which is attenuated by a pretreatment with a CXCR4 antagonist. CONCLUSIONS We have identified SDF-1α as a novel suppressor of endothelial permeability. Specifically, SDF-1α stimulates the CXCR4/PI3K/Rac1 signaling pathway and the subsequent cytoskeletal rearrangement.
Collapse
Affiliation(s)
- Koji Kobayashi
- From the Departments of Animal Radiology (K.K., K.O., T.M.) and Veterinary Pharmacology (K.S., T.K., M.H., H.O.), Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Kanako Sato
- From the Departments of Animal Radiology (K.K., K.O., T.M.) and Veterinary Pharmacology (K.S., T.K., M.H., H.O.), Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Taiki Kida
- From the Departments of Animal Radiology (K.K., K.O., T.M.) and Veterinary Pharmacology (K.S., T.K., M.H., H.O.), Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Keisuke Omori
- From the Departments of Animal Radiology (K.K., K.O., T.M.) and Veterinary Pharmacology (K.S., T.K., M.H., H.O.), Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Masatoshi Hori
- From the Departments of Animal Radiology (K.K., K.O., T.M.) and Veterinary Pharmacology (K.S., T.K., M.H., H.O.), Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Hiroshi Ozaki
- From the Departments of Animal Radiology (K.K., K.O., T.M.) and Veterinary Pharmacology (K.S., T.K., M.H., H.O.), Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Takahisa Murata
- From the Departments of Animal Radiology (K.K., K.O., T.M.) and Veterinary Pharmacology (K.S., T.K., M.H., H.O.), Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan.
| |
Collapse
|
39
|
Sarashina H, Tsubosaka Y, Omori K, Aritake K, Nakagawa T, Hori M, Hirai H, Nakamura M, Narumiya S, Urade Y, Ozaki H, Murata T. Opposing immunomodulatory roles of prostaglandin D2 during the progression of skin inflammation. J Immunol 2013; 192:459-65. [PMID: 24298012 DOI: 10.4049/jimmunol.1302080] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The effects of PGD2 are extremely context dependent. It can have pro- or anti-inflammatory effects in clinically important pathological conditions. A greater mechanistic insight into the determinants of PGD2 activity during inflammation is thus required. In this study, we investigated the role of PGD2 in croton oil-induced dermatitis using transgenic (TG) mice overexpressing hematopoietic PGD synthase. Administration of croton oil caused tissue swelling and vascular leakage in the mouse ear. Compared with wild-type animals, TG mice produced more PGD2 and showed decreased inflammation in the early phase, but more severe manifestations during the late phase. Data obtained from bone marrow transplantation between wild-type and TG mice indicated that PGD2 produced by tissue resident cells in the TG mice attenuated early-phase inflammation, whereas PGD2 produced from hematopoietic lineage cells exacerbated late-phase inflammation. There are two distinct PGD2 receptors: D-prostanoid receptor (DP) and chemoattractant receptor-homologous molecule expressed on Th2 cells (CRTH2). In TG mice, treatment with a DP antagonist exacerbated inflammation in the early phase, whereas treatment with a CRTH2 antagonist attenuated inflammation during the late phase. In vitro experiments showed that DP agonism enhanced vascular endothelial barrier formation, whereas CRTH2 agonism stimulated neutrophil migration. Collectively, these results show that when hematopoietic PGD synthase is overexpressed, tissue resident cell-derived PGD2 suppresses skin inflammation via DP in the early phase, but hematopoietic lineage cell-derived PGD2 stimulates CRTH2 and promotes inflammation during the late phase. DP-mediated vascular barrier enhancement or CRTH2-mediated neutrophil activation may be responsible for these effects. Thus, PGD2 represents opposite roles in inflammation, depending on the disease phase in vivo.
Collapse
Affiliation(s)
- Hana Sarashina
- Department of Veterinary Pharmacology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Kida T, Omori K, Hori M, Ozaki H, Murata T. Stimulation of G Protein–Coupled Bile Acid Receptor Enhances Vascular Endothelial Barrier Function via Activation of Protein Kinase A and Rac1. J Pharmacol Exp Ther 2013; 348:125-30. [DOI: 10.1124/jpet.113.209288] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
|
41
|
Mera T, Itoh T, Kita S, Kodama S, Kojima D, Nishinakamura H, Okamoto K, Ohkura M, Nakai J, Iyoda T, Iwamoto T, Matsuda T, Baba A, Omori K, Ono J, Watarai H, Taniguchi M, Yasunami Y. Pretreatment of donor islets with the Na(+) /Ca(2+) exchanger inhibitor improves the efficiency of islet transplantation. Am J Transplant 2013; 13:2154-60. [PMID: 23746308 DOI: 10.1111/ajt.12306] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 04/15/2013] [Accepted: 04/16/2013] [Indexed: 01/25/2023]
Abstract
Pancreatic islet transplantation is an attractive therapy for the treatment of insulin-dependent diabetes mellitus. However, the low efficiency of this procedure necessitating sequential transplantations of islets with the use of 2-3 donors for a single recipient, mainly due to the early loss of transplanted islets, hampers its clinical application. Previously, we have shown in mice that a large amount of HMGB1 is released from islets soon after their transplantation and that this triggers innate immune rejection with activation of DC, NKT cells and neutrophils to produce IFN-γ, ultimately leading to the early loss of transplanted islets. Thus, HMGB1 release plays an initial pivotal role in this process; however, its mechanism remains unclear. Here we demonstrate that release of HMGB1 from transplanted islets is due to hypoxic damage resulting from Ca(2+) influx into β cells through the Na(+) /Ca(2+) exchanger (NCX). Moreover, the hypoxia-induced β cell damage was prevented by pretreatment with an NCX-specific inhibitor prior to transplantation, resulting in protection and long-term survival of transplanted mouse and human islets when grafted into mice. These findings suggest a novel strategy with potentially great impact to improve the efficiency of islet transplantation in clinical settings by targeting donor islets rather than recipients.
Collapse
Affiliation(s)
- T Mera
- Central Research Institute for Islet Biology, Fukuoka University, Fukuoka, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Abstract
The major functions required for load-bearing orthopaedic implants are load-bearing and mechanical or biological fixation with the surrounding bone. Porous materials with appropriate mechanical properties and adequate pore structure for fixation are promising candidates for load-bearing implant material. In previous work, the authors developed a novel titanium (Ti) foam sheet 1-2mm thick by an original slurry foaming method. In the present work, novel Ti foam is developed with mechanical properties compatible with cortical bone and biological fixation capabilities by layer-by-layer stacking of different foam sheets with volumetric porosities of 80% and 17%. The resulting multilayer Ti foam exhibited a Young's modulus of 11-12GPa and yield strength of 150-240MPa in compression tests. In vitro cell culture on the sample revealed good cell penetration in the higher-porosity foam (80% volumetric porosity), which reached 1.2mm for 21 days of incubation. Cell penetration into the high-porosity layers of a multilayer sample was good and not influenced by the lower-porosity layers. Calcification was also observed in the high-porosity foam, suggesting that this Ti foam does not inhibit bone formation. Contradictory requirements for high volumetric porosity and high strength were attained by role-sharing between the foam sheets of different porosities. The unique characteristics of the present multilayer Ti foam make them attractive for application in the field of orthopaedics.
Collapse
Affiliation(s)
- K Kato
- Mitsubishi Material Corp., 1-297 Kitabukuro-cho, Omiya-ku, Saitama 330-8508, Japan.
| | | | | | | | | | | | | |
Collapse
|
43
|
Omori K, Mitsuhashi M, Ishiyama K, Nair I, Rawson J, Todorov I, Kandeel F, Mullen Y. mRNA of the pro-apoptotic gene BBC3 serves as a molecular marker for TNF-α-induced islet damage in humans. Diabetologia 2011; 54:2056-66. [PMID: 21567299 DOI: 10.1007/s00125-011-2183-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2010] [Accepted: 04/04/2011] [Indexed: 12/23/2022]
Abstract
AIMS/HYPOTHESIS TNF-α plays important roles in the pathogenesis of type 1 and type 2 diabetes mellitus. In light of this, we examined the involvement of a pro-apoptotic gene, BBC3 (also known as PUMA), in TNF-α-mediated beta cell dysfunction and destruction in human islets. METHODS Human islets were exposed in vitro to TNF-α alone or in combination with IFN-γ. Gene expression was assessed by RT-PCR using a set of single islets. Protein abundance and cellular localisation of BBC3 were assessed by immunoblot and immunohistochemistry. A marginal number of islets were transplanted into diabetic NODscid mice to correlate in vivo islet function with BBC3 expression. RESULTS BBC3 and IL8 mRNA were upregulated in TNF-α-stimulated islets in a dose-dependent manner and enhanced through addition of IFN-γ, but not upregulated by IFN-γ alone. Immunohistochemistry revealed that TNF-α in combination with IFN-γ upregulated basal BBC3 abundance in the cytoplasm of beta cells along with the perinuclear clustering of mitochondria partially co-localised with BBC3. TNF-α alone did not induce beta cell death, but did abrogate preproinsulin precursor mRNA synthesis in response to high glucose stimulation, which was inversely associated with upregulation of BBC3 mRNA expression by TNF-α. Higher BBC3 mRNA expression in islets correlated with decreased graft function in vivo. CONCLUSIONS/INTERPRETATION These results suggest that BBC3 mRNA can serve as a molecular marker to detect early TNF-α-induced beta cell stress and may help identify islet-protective compounds for the treatment of diabetes.
Collapse
Affiliation(s)
- K Omori
- Beckman Research Institute of the City of Hope, 1500 East Duarte Rd, Duarte, CA 91010, USA.
| | | | | | | | | | | | | | | |
Collapse
|
44
|
Naruishi K, Omori K, Maeda H, Sonoi N, Funakoshi K, Hirai K, Ishii M, Kubo K, Kobayashi H, Tomiyama T, Yamamoto D, Tanimoto I, Kunimatsu K, Takashiba S. Immune responses to porphyromonas gingivalis infection suppress systemic inflammatory response in experimental murine model. J BIOL REG HOMEOS AG 2011; 25:195-202. [PMID: 21880208] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Periodontitis is a localized infectious disease caused by periodontopathic bacteria such as Porphyromonas gingivalis (P. gingivalis), and the severity correlates to significance of immune responses. Recently, it has been reported that periodontitis is associated with the development of systemic disease such as diabetes and atherosclerosis because of increasing invasion of oral pathogens to the circulation. However, the association between local and systemic infectious responses is still unclear. In the present study, we examined the differences of biological responses in animals with or without bacterial infection. After Balb/c mice were infected subcutaneously with live P. gingivalis W83, serum, skin and liver were collected according to experimental protocol. The skin and liver tissues were observed pathologically by haematoxylin-eosin staining, and serum IL-6 levels were measured using ELISA method. Throughout the experimental period, conditions of the mice were observed continuously. As expected, severe infiltration of leukocytes were observed at inflamed skin corresponding to the number of bacterial challenges. Although no inflammatory appearance of skin was observed, serum IL-6 levels were increased dramatically (P <0.01, Student's t-test) and liver tissues were injured in the mice without bacterial challenge. Interestingly, although severe inflammatory appearance of the skin was observed, serum IL-6 levels were not increased and no inflammatory responses were observed in the liver of the 3-times bacterially challenged group. Importantly, immunoglobulin G against P. gingivalis W83 was detected in the blood of mice with 3-times bacterial challenge corresponding to improvement of weight loss and survival. In conclusion, although multiple infections develop severe localized inflammation, the immune system should be sufficient to protect the systemic inflammatory responses.
Collapse
Affiliation(s)
- K Naruishi
- Division of Endodontology, Iwate Medical University, Department of Conservative Dentistry and Oral Rehabilitation, Morioka, Japan.
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
45
|
|
46
|
Matsui T, Ogawa H, Yamada N, Baba Y, Nomoto M, Omori K. Outcome of cochlear implantation in children with congenital cytomegalovirus infection and GJB2 mutation in relation to developmental disorder. Laryngoscope 2011. [DOI: 10.1002/lary.22282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
47
|
Yamasaki K, Omori K, Takaoka EI, Sekido N, Shigai M, Mori K, Minami M, Watanabe Y, Shimazui T, Akaza H. Successful Management by Provocative Angiography and Endovascular Stent of Ureteroarterial Fistula in a Patient with a Long-term Indwelling Ureteral Stent. Jpn J Clin Oncol 2009; 40:267-70. [DOI: 10.1093/jjco/hyp154] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
48
|
Abstract
Phosphoinositide-dependent kinase (PDK1) plays a central role in signal transduction mediated by phosphatidylinositol 3-kinases (PI3K) and regulates cellular functions in neutrophils. Neutrophils from individuals diagnosed with localized aggressive periodontitis (LAP) present an in vivo phenotype with depressed chemotaxis. The aim of this study was to test the hypothesis that PDK1 regulates chemotaxis in neutrophils and is responsible for the abnormal neutrophil chemotaxis LAP. Neutrophil chemotaxis was significantly suppressed by the PDK1 inhibitor staurosporine. When cells were transfected with PDK1 siRNA, there was a significant reduction in chemotaxis, while superoxide generation was not significantly affected. In primary neutrophils from persons with LAP, PDK1 expression and activation levels were significantly reduced, and this reduction was associated with the reduced phosphorylation of Akt (Thr308) and chemotaxis. Analysis of these data demonstrates that PDK1 is essential for the chemotactic migration of neutrophils, and in the absence of PDK1, neutrophil chemotaxis is impaired.
Collapse
Affiliation(s)
- M Yagi
- Department of Periodontology and Oral Biology, Goldman School of Dental Medicine, Boston University, 100 East Newton Street, Suite 107, Boston, MA 02118, USA
| | | | | | | | | | | | | | | |
Collapse
|
49
|
Affiliation(s)
- T Kajiya
- Department of General Internal Medicine, Oshima Medical Association Hospital, Kagoshima, Japan.
| | | | | | | | | | | | | |
Collapse
|
50
|
Herrera BS, Ohira T, Gao L, Omori K, Yang R, Zhu M, Muscara MN, Serhan CN, Van Dyke TE, Gyurko R. An endogenous regulator of inflammation, resolvin E1, modulates osteoclast differentiation and bone resorption. Br J Pharmacol 2008; 155:1214-23. [PMID: 18806821 DOI: 10.1038/bjp.2008.367] [Citation(s) in RCA: 101] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND AND PURPOSE The inflammation-resolving lipid mediator resolvin E1 (RvE1) effectively stops inflammation-induced bone loss in vivo in experimental periodontitis. It was of interest to determine whether RvE1 has direct actions on osteoclast (OC) development and bone resorption. EXPERIMENTAL APPROACH Primary OC cultures derived from mouse bone marrow were treated with RvE1 and analysed for OC differentiation, cell survival and bone substrate resorption. Receptor binding was measured using radiolabelled RvE1. Nuclear factor (NF)-kappaB activation and Akt phosphorylation were determined with western blotting. Lipid mediator production was assessed with liquid chromatography tandem mass spectrometry. KEY RESULTS OC growth and resorption pit formation were markedly decreased in the presence of RvE1. OC differentiation was inhibited by RvE1 as demonstrated by decreased number of multinuclear OC, a delay in the time course of OC development and attenuation of receptor activator of NF-kappaB ligand-induced nuclear translocation of the p50 subunit of NF-kappaB. OC survival and apoptosis were not altered by RvE1. Messenger RNA for both receptors of RvE1, ChemR23 and BLT(1) is expressed in OC cultures. Leukotriene B(4) (LTB(4)) competed with [(3)H]RvE1 binding on OC cell membrane preparations, and the LTB(4) antagonist U75302 prevented RvE1 inhibition of OC growth, indicating that BLT(1) mediates RvE1 actions on OC. Primary OC synthesized the RvE1 precursor 18R-hydroxy-eicosapentaenoic acid and LTB(4). Co-incubation of OC with peripheral blood neutrophils resulted in transcellular RvE1 biosynthesis. CONCLUSIONS AND IMPLICATIONS These results indicate that RvE1 inhibits OC growth and bone resorption by interfering with OC differentiation. The bone-sparing actions of RvE1 are in addition to inflammation resolution, a direct action in bone remodelling.
Collapse
Affiliation(s)
- B S Herrera
- Department of Periodontology and Oral Biology, Goldman School of Dental Medicine, Boston University, Boston, MA 2118, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|