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杉田 裕医学部附属病院 食道胃腸外科助教
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■ 論文- Background: Aging profoundly alters host immunity, yet how age-associated immune changes in the liver influence the growth of metastatic tumors remains incompletely understood. Liver metastasis is a major cause of cancer-related mortality, particularly in elderly patients, for whom aggressive treatments are often not feasible. This study aimed to clarify how aging reshapes the hepatic immune microenvironment and to identify age-associated host factors that influence liver metastasis growth. Methods: Tumor-naïve and tumor-bearing young and aged mice were analyzed using a syngeneic MC38 liver metastasis model. Immune cell composition in the liver was assessed by flow cytometry, and gene expression was evaluated by quantitative reverse transcription PCR (RT-qPCR). Public transcriptomic datasets were screened to identify age-associated inflammatory factors. The functional relevance of the S100A8/A9 axis was examined using the small-molecule inhibitor paquinimod. Results: Aging was associated with a distinct baseline immune cell composition in the liver. During liver metastasis, overall growth was comparable between young and aged mice; however, metastatic lesions in aged hosts showed increased expression of multiple inflammation-related genes and prominent accumulation of Ly6G+ cells. In silico screening identified S100a9 as one of the most highly upregulated inflammation-related genes in aged livers, which was confirmed in both tumor-naïve and metastatic liver tissues. Pharmacological modulation of the S100A8/A9 axis with paquinimod significantly reduced liver metastasis growth in aged, but not young, mice, and was accompanied by a shift in immune cell composition, including an increased representation of CD8+ T cells. Conclusions: These findings indicate that aging is associated with a distinct hepatic immune context that shapes the inflammatory and cellular composition of the tumor microenvironment during liver metastasis. S100A9 emerges as a key age-associated, host-derived factor that is functionally relevant to the growth of liver metastases in aged hosts, supporting the S100A8/A9 axis as a context-specific therapeutic target.2026年05月, Cancers, 18(10) (10), 英語, 国際誌研究論文(学術雑誌)
- BACKGROUND/AIM: Extracellular vesicles (EVs), including exosomes, are abundant in body fluids, and EV surface proteins can be profiled as potential minimally invasive biomarkers. CD147 (EMMPRIN/Basigin) is a tumor-associated surface glycoprotein implicated in cancer progression. CD9 and CD63 are tetraspanin membrane proteins widely used as EV markers. The present study aimed to evaluate the clinical significance of serum EV subsets double-positive for CD9 and CD63, or for CD9 and CD147 in patients with colorectal cancer (CRC) before and after tumor resection. MATERIALS AND METHODS: Sixteen patients with CRC were recruited, and paired pre- and postoperative serum samples were analyzed for CD9+ CD63+ EVs and CD9+ CD147+ EVs. Serum EVs were quantified using the ExoCounter system with antibody-conjugated beads. CD147 expression in resected tumor tissue was analyzed by immunohistochemistry. RESULTS: CD9+ CD63+ EVs were significantly reduced in postoperative samples compared with preoperative samples (p=0.0151). CD9+ CD147+ EVs also showed a significant postoperative decrease (p=0.0186). CD147 immunostaining was positive in 13 out of 16 resected tumors (81.3%). In patients with CD147 negative tumors (n=3), serum CD9+ CD147+ EV levels were low at both pre- and postoperative time points and remained unchanged. CONCLUSION: Serum CD9+ CD63+ and CD9+ CD147+ EV subsets decreased after CRC surgery, supporting their potential utility as minimally invasive liquid biopsy biomarkers of postoperative tumor burden. Future prospective clinical trials will determine whether these EV subsets are indeed biomarkers of postoperative residual tumor.2026年05月, Anticancer research, 46(5) (5), 2345 - 2352, 英語, 国際誌研究論文(学術雑誌)
- BACKGROUND: There is substantial global variation in demographics, disease burden, and treatment for gastric cancer patients. Benchmarking is an instrument to assess such variation and enables to investigate to which extent case-mix and treatments explain differences in outcomes. We aimed to evaluate hospital-level variation in surgical outcomes following gastrectomy for gastric cancer before and after adjusting for case-mix and treatment-related factors. METHODS: Data were retrieved from the GastroBenchmark and GASTRODATA databases, including consecutive gastric cancer resections performed between 2017 and 2021 from 43 centers. Patients who underwent a (sub)total gastrectomy for adenocarcinoma were identified. Outcomes included 30-day mortality, severe complications (Clavien-Dindo grade ≥ 3a), > 15 lymph nodes retrieved, negative resection margin (R0), prolonged hospitalization (> 14 days), readmissions (< 30 days), reoperations, and escalation of care. We assessed absolute inter-hospital variation for outcomes, and estimated outcomes using mixed-effect logistic regression models with a random intercept. We estimated crude, case-mix adjusted, and case-mix and treatment adjusted hospital effects. The conditional and marginal pseudo-R2 were used to quantify the variance in outcome explained by case-mix and treatment-related factors. RESULTS: A total of 7818 patients from 41 hospitals were included, with contributions ranging from 12 to 2554 patients per hospital (IQR: 49-146). Observed 30-day mortality and severe complications ranged from 0 to 9.7% (IQR: 3.2%) and 5.3 to 31% (IQR: 7.7%), respectively. Larger variation between hospitals was observed for retrieval of > 15 lymph nodes (IQR: 12.3%), prolonged hospitalization (IQR: 14.4%) and readmissions (IQR 11.3%). This variation was reduced in the crude model, while adjusting for case-mix and treatment-related factors did not significantly reduce variation for any outcome. Case-mix factors had a limited contribution to the explained variance, except for 30-day mortality (33.9%) and negative resection margins (31.7%). Adding treatment-related factors increased the explained variance for 30-day mortality by 40.8%, but had low impact (< 10%) on the variance in most surgical outcomes. CONCLUSIONS: Case-mix and treatment factors are not the primary drivers of variation in surgical outcomes following gastrectomy. Case-mix adjustment can improve the validity of global comparisons for 30-day mortality, but does not seem essential for comparing other investigated outcomes.2026年01月, Gastric cancer : official journal of the International Gastric Cancer Association and the Japanese Gastric Cancer Association, 英語, 国内誌研究論文(学術雑誌)
- BACKGROUND: Esophageal squamous cell carcinoma (ESCC) and hepatic cirrhosis (HC) share major risk factors, including alcohol consumption and smoking. Consequently, patients with HC exhibit an elevated incidence of ESCC. Although HC is widely recognized to contribute to poor prognosis following esophagectomy for ESCC, the underlying mechanisms remain poorly understood. This study aimed to investigate the association between hepatic fibrosis evaluated using the fibrosis-4 (FIB-4) index and postoperative outcomes among patients with ESCC undergoing esophagectomy. METHODS: We retrospectively analyzed 461 patients with ESCC who underwent minimally invasive esophagectomy at Kobe University Hospital. Hepatic fibrosis was evaluated using the FIB-4 index, which estimates liver fibrosis based on routine blood test parameters. Patients were stratified into two groups: fibrosis-positive (FIB-4 > 2.67) and fibrosis-negative (FIB-4 ≤ 2.67). RESULTS: Among patients with cT1 tumors, overall survival (OS) did not differ significantly between the two groups. However, among those with ≥cT2 tumors, the fibrosis-positive group showed significantly worse OS than the fibrosis-negative group (P = 0.0148). Additionally, the fibrosis-positive group had a significantly higher incidence of poor response to preoperative chemotherapy (P = 0.0075). Postoperative serum albumin levels were markedly lower at 3, 6, and 12 months in the fibrosis-positive group (P = 0.015, 0.043, and 0.0066, respectively). While albumin levels recovered to baseline in the fibrosis-negative group within 12 months, no such recovery was observed in the fibrosis-positive group. CONCLUSIONS: Preoperative hepatic fibrosis is associated with poor response to preoperative chemotherapy and prolonged postoperative malnutrition, contributing to poorer long-term survival outcomes among patients with ESCC undergoing minimally invasive esophagectomy.2026年01月, Annals of surgical oncology, 33(1) (1), 444 - 452, 英語, 国際誌研究論文(学術雑誌)
- BACKGROUND: Large type III gastric cancer (GC) ≥ 8 cm has conventionally been categorized with type IV GC in Japan, leading to alternative treatment strategies such as neoadjuvant chemotherapy and staging laparoscopy (SL). However, whether 8 cm is the correct cutoff remains unclear. METHODS: We retrospectively analyzed patients clinically diagnosed with advanced GC who underwent surgery at our department. Patients were classified by Borrmann type, and clinicopathological characteristics including survival outcomes and peritoneal metastasis incidence were analyzed based on tumor size to determine the optimal cutoff for large type III GC. RESULTS: Tumor size correlated with overall survival in type III GC. Although hazard ratios (HRs) for "large" and "small" type III vs. type IV remained comparable up to the 8 cm cutoff (0.60 and 0.41, respectively), HR for "large" type III GC increases sharply to 0.74 with a 10 cm cutoff. Subgroup analysis based on histological subtype revealed similar results in the undifferentiated type. Conversely, a larger cutoff value appeared more appropriate for the differentiated type. The largest difference in the incidence of peritoneal metastasis was observed with a 6 cm cutoff (36.1% in "large" type III and 10.2% in "small" type III), and similar results were observed in the undifferentiated type at the same cutoff. CONCLUSIONS: In terms of survival, a 10 cm cutoff may more accurately define large type III GC than the conventional 8 cm. However, if surgeons intend to identify peritoneal metastasis by SL, type III GC ≥ 6 cm could be a possible candidate.2026年01月, Annals of gastroenterological surgery, 10(1) (1), 77 - 86, 英語, 国内誌研究論文(学術雑誌)
- BACKGROUND/AIM: Previous studies demonstrated the safety of laparoscopic gastrectomy in patients with locally advanced gastric cancer. However, the feasibility of minimally invasive surgery (MIS) following neoadjuvant chemotherapy (NAC) for locally advanced gastric cancer remains unclear. To our knowledge, no previous study has conducted a comprehensive analysis that evaluated NAC and surgical approach simultaneously. This study aimed to assess the feasibility of MIS for locally advanced gastric cancer after NAC using a four-arm comparison. PATIENTS AND METHODS: This study retrospectively analyzed 174 patients who underwent gastrectomy at Kobe University Hospital between January 2011 and July 2024. The patients were categorized into four groups based on NAC and surgical approaches: No NAC/open surgery (n=63), no NAC/MIS (n=49), NAC/open surgery (n=20), and NAC/MIS (n=42). We compared surgical and survival outcomes among the four groups. RESULTS: Patients in the group treated with NAC/MIS experienced less blood loss, fewer transfusions, and a shorter hospital stay. Additionally, compared with the NAC/open (20%) and no NAC/MIS (6.1%) groups, the rate of severe postoperative complications (grade ≥III) was lowest in the group treated with NAC/MIS, with no incidence of pancreatic fistula. The R0 resection rate was highest (97.6%) in the group treated with NAC/MIS. Although 5-year relapse-free survival and overall survival were higher in the group treated with NAC/MIS, the differences were not statistically significant. CONCLUSION: This four-arm study suggests that minimally invasive surgery after NAC for locally advanced gastric cancer may be technically and oncologically safe.2025年12月, Anticancer research, 45(12) (12), 5557 - 5566, 英語, 国際誌研究論文(学術雑誌)
- PURPOSE: Minimally invasive esophagectomy (MIE) is the standard surgical procedure. Robot-assisted MIE (RAMIE) was developed to overcome the problems associated with conventional MIE. This study investigated whether or not standardizing surgical procedures for RAMIE using soft coagulation scissors and Maryland bipolar forceps could improve short-term outcomes. METHODS: This study included 130 patients who underwent RAMIE. Clinicopathological characteristics and surgical outcomes were compared before and after standardization by two expert surgeons as well as between the standardized and trainee groups. A cumulative sum control chart (CUSUM) was used to evaluate changes in operative time. RESULTS: The console time during the thoracic procedure was shorter in the standardized group than in the pre-standardized group (P < 0.001). The rate of recurrent laryngeal nerve palsy was lower in the standardized group than in the pre-standardized group (P = 0.039). No significant differences were observed between the standardized and trainee groups. In the standardized and trainee groups, CUSUM clearly indicated that the console time peak occurred in the 12th and 16th cases. CONCLUSIONS: Standardization of surgical procedures using an appropriate device for each surgical step could improve surgical outcomes in RAMIE. Furthermore, it may facilitate safer and more efficient surgical training.2025年11月, Surgery today, 英語, 国内誌研究論文(学術雑誌)
- BACKGROUND & AIMS: Oral nutritional supplements (ONS) administered after gastrectomies can prevent postoperative weight loss. However, the amount of additional energy to be added to energy requirements after gastrectomy is unclear. This study aimed to clarify dietary energy intake and its association with weight loss in postgastrectomy patients. METHODS: We performed a single-center, single-arm, open-label, non-randomized clinical trial. Fifty patients with gastric cancer who underwent distal or total gastrectomy were included in this study. Until 3 months postoperatively, the patients continuously consumed ONS and their intake was recorded. Additionally, the patients took photos of their regular diets. Hospital visits were made every 2 weeks to investigate calorie intake (from regular diet plus ONS), physical findings, and nutritional status. The primary endpoint was the percentage of body weight loss (%BWL) at 3 months after gastrectomy. RESULTS: Data were available for 45 patients. %BWL was 7.5 ± 5.1 % at 3 months postoperatively. The group with ONS intake <200 kcal/day tended to show a lower %BWL; however, this was not significant. No correlation was observed between ONS and regular dietary calorie intake. The required calorie intake was 1588 ± 157 kcal/day. Calorie intake from regular diet alone and from regular diet plus ONS were 1330 ± 280 and 1487 ± 300 kcal/day, respectively. The sufficient group, whose total calorie intake met the requirements, had significantly reduced body weight loss, compared with the insufficient group. CONCLUSIONS: After gastrectomy, regular diet alone often fails to meet nutritional requirements, and ONS supplementation may reduce %BWL at 3 months postoperatively by correcting energy deficits. This study was registered with the University Hospital Medical Information Network Clinical Trial Registry (UMIN-CTR; UMIN000047451; https://center6.umin.ac.jp/cgi-open-bin/ctr/ctr_view.cgi?recptno=R000054111).2025年10月, Clinical nutrition ESPEN, 69, 449 - 457, 英語, 国際誌研究論文(学術雑誌)
- Abstract Background To reduce the clinical and economic burden of complications after gastrectomy for gastric cancer, specific complications should be targeted to effectively allocate healthcare resources for quality improvement and preventive measures. The aim of this study was to assess the impact of complications on clinical outcomes. Methods This was a retrospective multicentre study of patients who underwent (sub)total gastrectomy for gastric or junctional adenocarcinoma at 43 centres in 16 countries between 2017 and 2021. Outcomes were escalation of care, reoperation, prolonged hospital stay (greater than the 75th percentile), readmission, and 30-day mortality. Adjusted relative risks and population attributable fractions were estimated for specific complication–outcome pairs. The population attributable fraction represents the percentage reduction in the frequency of an adverse outcome if a complication could be completely prevented in the population. Results In total, 7829 patients were included. Postoperative complications occurred in 1884 patients (24.1%). The most frequent complications were pulmonary complications (436 patients (5.6%)), anastomotic leakage (363 patients (4.6%)), and abdominal collection (301 patients (3.8%)). Anastomotic leakage, cardiac complications, and pulmonary complications had the greatest impact on 30-day mortality (population attributable fraction 26.6% (95% c.i. 14.5% to 38.6%), 18.7% (95% c.i. 9.4% to 28.0%), and 15.6% (95% c.i. 12.0% to 30.0%) respectively). Anastomotic leakage and pulmonary complications had the greatest impact on escalation of care (population attributable fraction 26.3% (95% c.i. 20.6% to 32.0%) and 18.4% (95% c.i. 11.7% to 25.2%) respectively), whereas anastomotic leakage and intra-abdominal bleeding had the greatest impact on reoperation (population attributable fraction 31.6% (95% c.i. 26.4% to 36.9%) and 8.5% (95% c.i. 5.5% to 11.5%) respectively). Most of the studied complications contributed to a prolonged hospital stay, whereas the contribution of complications to readmission did not exceed 15.9%. Subgroup analysis showed regional variation in the impact of complications. Conclusion Anastomotic leakage had the largest overall negative impact on clinical outcomes after gastrectomy for gastric adenocarcinoma. Reducing the incidence of anastomotic leakage and pulmonary complications would have the most impact on the burden of complications.Oxford University Press (OUP), 2025年03月, British Journal of Surgery, 112(4) (4)研究論文(学術雑誌)
- OBJECTIVE/BACKGROUND: Various anastomotic and reconstruction techniques are used for minimally invasive total (miTG) and distal gastrectomy (miDG). Their effects on postoperative morbidity have not been extensively studied. METHODS: MiTG and miDG patients were selected from 9356 oncological gastrectomies performed in 2017-2021 in 43 centers. Endpoints included anastomotic leakage (AL) rate and postoperative morbidity tested by multivariable analysis. RESULTS: Three major anastomotic techniques [circular stapled (CS); linear stapled (LS); and hand sewn (HS)], and 3 major bowel reconstruction types [Roux (RX); Billroth I (BI); Billroth II (BII)] were identified in miTG (n=878) and miDG (n=3334). Postoperative complications, including AL (5.2% vs 1.1%), overall (28.7% vs 16.3%), and major morbidity (15.7% vs 8.2%), as well as 90-day mortality (1.6% vs 0.5%) were higher after miTG compared with miDG. After miTG, the AL rate was higher after CS (4.3%) and HS (7.9%) compared with LS (3.4%). Similarly, major complications (LS: 9.7%, CS: 16.2%, and HS: 12.7%) were lowest after LS. Multivariate analysis confirmed anastomotic technique as a predictive factor for AL, overall, and major complications. In miDG, AL rate (BI: 1.4%, BII 0.8%, and RX 1.2%), overall (BI: 14.5%, BII: 15.0%, and RX: 18.7%), and major morbidity (BI: 7.9%, BII: 9.1%, and RX: 7.2%), and mortality (BI: 0%, BII: 0.1%, and RY: 1.1%%) were not affected by bowel reconstruction. CONCLUSIONS: In oncologically suitable situations, miDG should be preferred to miTG, as postoperative morbidity is significantly lower. LS should be a preferred anastomotic technique for miTG in Western Centers. Conversely, bowel reconstruction in DG may be chosen according to the surgeon's preference.2024年11月, Annals of surgery, 280(5) (5), 788 - 798, 英語, 国際誌研究論文(学術雑誌)
- 2024年01月, The British journal of surgery, 111(2) (2), 英語, 国際誌研究論文(学術雑誌)
- Despite the recent development of chemotherapeutic agents, the prognosis of colorectal cancer (CRC) patients with peritoneal dissemination (PD) remains poor. The tumor immune microenvironment (TIME) has drawn attention as a key contributing factor of tumor progression. Of TIME components, myeloid‑derived suppressor cells (MDSCs) are considered to play a responsible role in the immunosuppressive characteristics of the TIME. MDSCs are classified into two major subsets: Monocytic MDSCs (M‑MDSCs) and polymorphonuclear MDSCs (PMN‑MDSCs). Therefore, we hypothesize that MDSCs would play important roles in the PD‑relevant TIME and PD progression. To address this hypothesis, we established PD mouse models. As the PD nodules consisted scarcely of immune cells, we focused on the peritoneal cavity, but not PD nodule, to evaluate the PD‑relevant TIME. As a result, intraperitoneal PMN‑MDSCs were found to be substantially increased in association with PD progression. Based on these results, we phenotypically and functionally verified the usefulness of CD244 for identifying PMN‑MDSCs. In addition, the concentrations of interleukin (IL)‑6 and granulocyte‑colony stimulating factor (G‑CSF) were significantly increased in the peritoneal cavity, both of which were produced by the tumors and thought to contribute to the increases in the PMN‑MDSCs. In vivo depletion of the PMN‑MDSCs by anti‑Ly6G monoclonal antibody (mAb) significantly inhibited the PD progression and reverted CD4+ and CD8+ T cells in the peritoneal cavity and the peripheral blood. Collectively, these results suggest that the targeted therapy for PMN‑MDSCs would provide not only new therapeutic value but also a novel strategy to synergize with T‑cell‑based immunotherapy for CRC‑derived PD.Spandidos Publications, 2021年04月, Oncology Reports, 45(6) (6), 英語, 国際誌研究論文(学術雑誌)
- Oxford University Press (OUP), 2020年09月, Diseases of the Esophagus, 34(3) (3), 英語, 国際誌
Summary The number of elderly patients with esophageal cancer has increased in recent years. The use of thoracoscopic esophagectomy has also increased, and its minimal invasiveness is believed to contribute to postoperative outcomes. However, the short- and long-term outcomes in elderly patients remain unclear. This study aimed to elucidate the safety and feasibility of minimally invasive esophagectomy in elderly patients. This retrospective study included 207 patients who underwent radical thoracoscopic esophagectomy for thoracic esophageal squamous cell carcinoma at Kobe University Hospital between 2005 and 2014. Patients were divided into non-elderly (<75 years) and elderly (≥75 years) groups. A propensity score matching analysis was performed for sex and clinical T and N stage, with a total of 29 matched pairs. General preoperative data, surgical procedures, intraoperative data, postoperative complications, in-hospital death, cancer-specific survival, and overall survival were compared between groups. The elderly group was characterized by lower preoperative serum albumin levels and higher American Society of Anesthesiologists grade. Intraoperative data and postoperative complications did not differ between the groups. The in-hospital death rate was 4% in the elderly group, which did not significantly differ from the non-elderly group. Cancer-specific survival was similar between the two groups. Although overall survival tended to be poor in the elderly group, it was not significantly worse than that of the non-elderly group. In conclusion, the short- and long-term outcomes of minimally invasive esophagectomy in elderly versus non-elderly patients were acceptable. Minimally invasive esophagectomy is a safe and feasible modality for elderly patients with appropriate indications.[査読有り]研究論文(学術雑誌) - BACKGROUND/AIM: The aim of this study was to investigate PD-L1 expression and its association with prognosis in esophageal squamous cell carcinoma (ESCC) before and after neoadjuvant chemotherapy (5-fluorouracil and cisplatin, NAC-FP). PATIENTS AND METHODS: Using a database of 69 ESCC patients, we analyzed PD-L1 expression on tumor cells (TCs) and immune cells (ICs), as well as the density of CD8+ tumor-infiltrating lymphocytes (TILs) in pretreatment biopsy specimens-versus-surgical specimens after resection. We determined the prognostic significance of these factors. RESULTS: The fraction of ESCC containing ICs expressing PD-L1 and having a high CD8+ TIL density was significantly increased after neoadjuvant treatment. However, PD-L1 expression on TCs or ICs, and CD8+ TIL density, was not significantly associated with patient survival in ESCC patients. CONCLUSION: NAC-FP induced PD-L1 expression on ICs and CD8+ TILs in ESCC patients. This finding suggests that PD-1/PD-L1 blockade could be combined with NAC-FP to treat ESCC patients.2019年08月, Anticancer research, 39(8) (8), 4539 - 4548, 英語, 国際誌[査読有り]研究論文(学術雑誌)
- 2019年04月, 癌の臨床, 64(4) (4), 257 - 264, 日本語高齢者胃癌の外科治療[査読有り]研究論文(学術雑誌)
- In tumor immunity, invariant natural killer T (iNKT) cells play a pivotal role as a link between the innate and adaptive immune systems. With a precisely regulated activation mechanism, iNKT cells have the ability to respond quickly to antigenic stimulation and rapidly produce cytokines and chemokines, and subsequently an effective antitumor immune response. The development of iNKT cell-targeted active immunotherapy enables, not only an antitumor immune response through innate and acquired immunity, but also the conversion of an immunosuppressive into an immunogenic microenvironment. This review is focused on the activation mechanism and the role of iNKT cells after therapeutic active immunization. The therapeutic strategy targeting iNKT cells is expected to be applied to clinical practice in combination with surgery and chemotherapy.2018年07月, Anticancer research, 38(7) (7), 4233 - 4239, 英語, 国際誌[査読有り]研究論文(学術雑誌)
- 2018年07月, Anticancer research, 38(7) (7), 4333 - 4338[査読有り]
- (一社)日本消化器外科学会, 2017年10月, 日本消化器外科学会雑誌, 50(Suppl.2) (Suppl.2), 383 - 383, 日本語大腸ESD後穿孔症例に対するクリッピング閉鎖の有効性について
- 2017年07月, ANTICANCER RESEARCH, 37(7) (7), 3863 - 3869, 英語[査読有り]研究論文(学術雑誌)
- 2017年05月, GASTRIC CANCER, 20(3) (3), 548 - 552, 英語[査読有り]研究論文(学術雑誌)
- 2015年12月, ANNALS OF SURGICAL ONCOLOGY, 22, S355 - S355, 英語[査読有り]研究論文(学術雑誌)
- 2015年12月, ANNALS OF SURGICAL ONCOLOGY, 22, S335 - S335, 英語[査読有り]研究論文(学術雑誌)
- 2015年11月, SURGICAL ENDOSCOPY AND OTHER INTERVENTIONAL TECHNIQUES, 29(11) (11), 3386 - 3391, 英語[査読有り]研究論文(学術雑誌)
- Urban und Vogel GmbH, 2015年06月, Coloproctology, 37(3) (3), 165 - 169, ドイツ語[査読有り]研究論文(学術雑誌)
- 2015年01月, LANGENBECKS ARCHIVES OF SURGERY, 400(1) (1), 113 - 117, 英語[査読有り]研究論文(学術雑誌)
- 2022年, 日本がん転移学会学術集会・総会プログラム抄録集, 31st大腸癌腹膜播種モデルでは,PMN-MDSCが病態を進行させる
- (NPO)日本食道学会, 2021年09月, 日本食道学会学術集会プログラム・抄録集, 75回, 57 - 57, 英語高齢者における食道癌手術の現状と課題 高齢患者に対する胸腔鏡下食道切除術の安全性と有効性(Safety and validity of thoracoscopic esophagectomy for elderly patients)
- 2018年07月, CANCER RESEARCH, 78(13) (13), 英語研究発表ペーパー・要旨(国際会議)
- 第30回日本消化器癌発生学会総会, 2019年11月腹膜播種における腹腔内腫瘍免疫微小環境の解析
- 第57回日本癌治療学会学術集会, 2019年10月, 日本語, 岐阜大学大学院医学系研究科 脳腫瘍制御学講座 腫瘍外科学分野, 福岡, 国内会議局所進行胃癌に対するneoadjuvant cheterapyとしてのSOX療法の安全性ポスター発表
- 第74回日本消化器外科学会総会, 2019年07月, 日本語, 東京慈恵会医科大学, 東京, 国内会議当科で術前化学療法を施行した腎機能障害を有する胃癌症例の検討ポスター発表
- 第44回日本外科系連合学会学術集会, 2019年06月, 日本語, 金沢医科大学 一般・消化器外科学, 金沢, 国内会議高齢者の胃癌切除におけるCONUT scoreによるフレイル判定の有用性シンポジウム・ワークショップパネル(公募)
- 第73回日本食道学会学術集会, 2019年06月, 日本語, 独立行政法人国立病院機構 九州がんセンター, 福岡, 国内会議高齢食道癌患者に対する胸腔鏡手術の妥当性ポスター発表
- 第29回日本サイトメトリー学会学術集会, 2019年05月, 日本語, 順天堂大学医学部内科学血液学講座, 東京, 国内会議αガラクトシルセラミド付加した抗原導入した樹状細胞ベクターの抗腫瘍効果口頭発表(一般)
- 第29回日本サイトメトリー学会学術集会, 2019年05月, 日本語, 順天堂大学医学部内科学血液学講座, 東京, 国内会議腹膜播種マウスモデルにおける腹腔内骨髄由来抑制細胞(MDSC)の検討口頭発表(一般)
- 第40回癌免疫外科研究会, 2019年05月, 日本語, 金沢大学 消化器・腫瘍・再生外科学, 金沢, 国内会議消化器癌患者の末梢血T細胞におけるimmunological synapseの評価シンポジウム・ワークショップパネル(公募)
- 第40回癌免疫外科研究会, 2019年05月, 日本語, 金沢大学 消化器・腫瘍・再生外科学, 金沢, 国内会議タンパク抗原を導入したNKT細胞活性化樹状細胞ワクチンベクターの抗腫瘍効果シンポジウム・ワークショップパネル(公募)
- 第119回日本外科学会定期学術集会, 2019年04月, 日本語, 一般社団法人日本外科学会, 大阪, 国内会議局所進行胃癌に対する術前化学療法におけるSOX 療法の安全性と有効性
- AACR Annual Meeting 2019, 2019年03月, 日本語, Atlanta, 国内会議The induction of CD8+ T lymphocytes and PD-L1+ immune cells by neoadjuvant chemoradiotherapy for rectal cancerポスター発表
- AACR Annual Meeting 2019, 2019年03月, 日本語, Atlanta, 国内会議Intraperitoneal myeloid-derived suppressor cells in peritoneal dissemination mouse modelポスター発表
- 第52回制癌剤適応研究会, 2019年03月, 日本語, 神戸大学大学院医学研究科外科学講座食道胃腸外科学分野, 有馬, 国内会議腹膜播種マウスモデルにおける腹腔内骨髄由来抑制細胞(MDSC)の検討口頭発表(一般)
- 第52回制癌剤適応研究会, 2019年03月, 日本語, 神戸大学大学院医学研究科外科学講座食道胃腸外科学分野, 有馬, 国内会議末梢血myeloid derived suppressor cells(MDSC)は腫瘍の再発を反映するシンポジウム・ワークショップパネル(公募)
- 第91回日本胃癌学会総会, 2019年02月, 日本語, 静岡県立静岡がんセンター 胃外科, 沼津, 国内会議術前化学療法を行った進行胃癌症例での再発令の検討ポスター発表
- 第22回バイオ治療法研究会, 2018年12月, 日本語, 特定非営利活動法人環瀬戸内自然免疫ネットワーク, 東京, 国内会議マウス腹膜播種モデルにおける腹腔内骨髄由来免疫抑制細胞(MDSC)の推移口頭発表(一般)
- 第22回バイオ治療法研究会, 2018年12月, 日本語, 特定非営利活動法人環瀬戸内自然免疫ネットワーク, 東京, 国内会議末梢T細胞のIS形成能の測定法の確立口頭発表(一般)
- 第29回日本消化器癌発生学会総会, 2018年11月, 日本語, 一般社団法人日本消化器癌発生学会, 東京, 国内会議食道癌患者におけるT細胞表面分子集簇による機能評価ポスター発表
- 第29回日本消化器癌発生学会総会, 2018年11月, 日本語, 一般社団法人日本消化器癌発生学会, 東京, 国内会議腹膜播種モデルにおける腹腔内骨骨髄由来抑制細胞(MDSC)の推移口頭発表(一般)
- 第56回日本癌治療学会学術集会, 2018年10月, 日本語, 一般社団法人 日本癌治療学会, 横浜, 国内会議化学療法後に胃切除術を行った進行胃癌症例における予後因子の検討ポスター発表
- 第77回日本癌学会学術総会, 2018年09月, 日本語, 日本癌学会, 大阪, 国内会議腫瘍抗原導入DCGによる抗原特異的抗腫瘍免疫活性化ポスター発表
- 第77回日本癌学会学術総会, 2018年09月, 日本語, 日本癌学会, 大阪, 国内会議直腸癌術前化学放射線療法によるCD8+T細胞とPD-L1陽性免疫細胞の誘導口頭発表(一般)
- 第77回日本癌学会学術総会, 2018年09月, 日本語, 日本癌学会, 大阪, 国内会議T細胞刺激後免疫シナプス様表面分子の集簇反応の評価ポスター発表
- 第22回日本がん免疫学会総会, 2018年08月, 日本語, 日本がん免疫学会, 岡山, 国内会議消化器癌患者におけるT細胞の刺激応答性の評価方法の検討ポスター発表
- 第27回日本がん転移学会学術集会・総会, 2018年07月, 日本語, 日本がん転移学会, 横浜, 国内会議術後腹膜炎が肺転移の予後に及ぼす影響とその免疫学的検討シンポジウム・ワークショップパネル(公募)
- 第73回日本消化器外科学会総会, 2018年07月, 日本語, 一般社団法人 日本消化器外科学会, 鹿児島, 国内会議切除可能進行胃癌における術前補助化学療法の予後因子の検討ポスター発表
- 第73回日本消化器外科学会総会, 2018年07月, 日本語, 一般社団法人 日本消化器外科学会, 鹿児島, 国内会議後期高齢者進行胃癌患者に対する術前化学療法の安全性ポスター発表
- 第73回日本消化器外科学会総会, 2018年07月, 日本語, 一般社団法人 日本消化器外科学会, 鹿児島, 国内会議消化器癌患者におけるT細胞表面分子集簇による機能評価ポスター発表
- 日本外科代謝栄養学会第55回学術集会, 2018年07月, 日本語, 日本外科代謝栄養学会, 大阪, 国内会議高齢者における術前化学療法の安全性と栄養評価口頭発表(一般)
- 日本外科代謝栄養学会第55回学術集会, 2018年07月, 日本語, 日本外科代謝栄養学会, 大阪, 国内会議高齢者の胃癌治癒切除後の予後予測におけるCONUT scoreの有用性口頭発表(一般)
- 第43回日本外科系連合学会学術集会, 2018年06月, 日本語, 一般社団法人 学会支援機構内日本外科系連合学会事務局, 東京, 国内会議高齢者胃癌患者における術後肺炎併発の長期予後への影響シンポジウム・ワークショップパネル(公募)
- 第27回日本癌病態治療研究会, 2018年05月, 日本語, NPO法人 日本癌病態治療研究会事務局, 千葉, 国内会議癌患者におけるT細胞の刺激応答性の評価???シンポジウム・ワークショップパネル(公募)
- 第28回日本サイトメトリー学会学術集会, 2018年05月, 日本語, 一般社団法人日本サイトメトリー学会, 東京, 国内会議消化器癌患者におけるT細胞の刺激応答性の新規評価方法ポスター発表
- 第6回がんと代謝研究会, 2018年05月, 日本語, がんと代謝研究会, 奄美大島, 国内会議腫瘍再発モデルにおける末梢血中の骨髄由来抑制細胞(MDSC)の推移ポスター発表
- AACR Annual Meeting 2018, 2018年04月, 英語, American Association for Cancer Research, Chicago, 国際会議Electroporation as a feasible method for antigen delivering into vectors loaded with NKT cell ligandポスター発表
- AACR Annual Meeting 2018, 2018年04月, 英語, American Association for Cancer Research, Chicago, 国際会議The induction of PD-L1 positive immune cells and CD8-positive T lymphocytes by neoadjuvant chemoradiotherapy for rectal cancerポスター発表
- AACR Annual Meeting 2018, 2018年04月, 英語, American Association for Cancer Research, Chicago, 国際会議A new method for evaluating T cell response after stimulation on gastrointestinal cancer patientsポスター発表
- 第51回制癌剤適応研究会, 2018年03月, 日本語, 制癌剤適応研究会, 下呂, 国内会議化学療法後に胃切除術を行った進行胃癌症例の検討口頭発表(一般)
- 第90回日本胃癌学会総会, 2018年03月, 日本語, 日本胃癌学会, 横浜, 国内会議神経内分泌細胞成分を伴う胃癌に対する集学的治療の有用性ポスター発表
- 第14回日本消化管学会総会学術集会, 2018年02月, 日本語, 一般社団法人日本消化管学会, 東京, 国内会議神経内分泌細胞成分を含む胃癌に対する集学的治療の有用性シンポジウム・ワークショップパネル(公募)
- 第21回バイオ治療法研究会学術集会, 2017年12月, 日本語, 福岡がん総合クリニック, 福岡, 国内会議腫瘍抗原導入DCGを用いた抗原特異的抗腫瘍免疫活性化口頭発表(一般)
- 第21回バイオ治療法研究会学術集会, 2017年12月, 日本語, 福岡がん総合クリニック, 福岡, 国内会議術後腹膜炎が肺転移の予後に及ぼす影響とその免疫学的検討口頭発表(一般)
- 第28回日本消化器癌発生学会, 2017年11月, 日本語, 熊本大学大学院生命科学研究部 消化器外科学, 熊本, 国内会議術後腹膜炎が肺転移の予後に及ぼす影響とその免疫学的検討口頭発表(一般)
- 第28回日本消化器癌発生学会, 2017年11月, 日本語, 熊本大学大学院生命科学研究部 消化器外科学, 熊本, 国内会議腫瘍再発モデルにおける末梢血中の骨髄由来抑制細胞(MDSC)の推移口頭発表(一般)
- 第28回日本消化器癌発生学会, 2017年11月, 日本語, 熊本大学大学院生命科学研究部 消化器外科学, 熊本, 国内会議消化器癌患者におけるT細胞の刺激応答性の評価方法の検討口頭発表(一般)
- JDDW2017, 2017年10月, 日本語, 福岡, 国内会議大腸ESD後穿孔症例に対するクリッピング閉鎖の有効性についてポスター発表
- 第89回日本胃癌学会総会, 2017年03月, 日本語, 広島大学大学院医歯薬保健学研究科分子病理学, 国内会議Early gastric cancer accompanied by Menetrier's disease with difficulty in pueoperative diagnosis(術前進行度診断が困難であったMenetrier病合併早期胃癌の一例)ポスター発表
- 第181回兵庫県外科医会学術集会, 2016年10月検診で偶然発見された副腎外傍神経節腫の一例
- 第71回日本消化器外科学会総会, 2016年07月, 日本語, 徳島大学 消化器・移植外科学, 徳島, 国内会議腹腔鏡下胃切除における胃切離ラインの決定:新たな知見に基づく術中超音波(ILUS)の有用性ポスター発表
- 24th International congress of the European Association for Endoscopic Surgery, 2016年06月, 英語, Amsterdam, 国際会議24th International congress of the European Association for Endoscopic Surgery口頭発表(一般)
- 第77回日本臨床外科学会総会, 2015年11月Trastuzumab単剤療法により長期CR維持を得た胃癌肝転移の一例
- 第30回須磨区医師会学術集談会, 2015年03月胆石イレウスに対して腹腔鏡補助下イレウス解除術を施行した一例
- 第195回近畿外科学会, 2014年05月, 日本語, 近畿外科学会, 天王寺, 国内会議ESDを契機に発症したと考えられる急性虫垂炎の一例口頭発表(一般)
- 日本消化器病学会近畿支部第100回例会, 2014年02月膵頭十二指腸切除術後難治性膵液瘻に対し膵空腸再吻合を施行した一例
- 第75回日本臨床外科学会総会, 2013年11月主膵管との交通を認め術前診断が 困難であった膵粘液性嚢胞腫瘍(MCN)の1切除例
- 第194回近畿外科学会, 2013年11月68Ga-DOTATOC-PETにて十二指腸原発巣を指摘し得た転移性肝神経内分泌腫瘍の一例
- 日本学術振興会, 科学研究費助成事業, 若手研究, 神戸大学, 2020年04月01日 - 2022年03月31日抗PD-1抗体耐性機構に着目したNKT細胞活性化ベクターを用いた新規腹膜播種治療腫瘍微小環境の形成は腫瘍細胞のみならず、様々な免疫細胞や間質細胞による。その中で骨髄由来抑制細胞(MDSC: Myeloid-derived suppressor cells)は、抑制性免疫細胞であり、腫瘍微小環境の構築に関与している。一方、腹膜播種に関する報告は少なく、検討は未だ十分とは言えない。そこで大腸癌腹膜播種マウスモデルを作成し、腹腔内MDSCの動態を解析し、腹膜播種の病勢への関与を検討した。結果、MC38の腹腔内投与後、腹腔内のMDSCは病勢の進行とともに増加した。腹腔内では特にPMN-MDSCの割合が増加した。抗Ly6G抗体によるMDSC消失試験では、腫瘍進行を抑制させた。
- 日本学術振興会, 科学研究費助成事業, 若手研究(B), 神戸大学, 2017年04月01日 - 2019年03月31日進行食道癌患者におけるリンパ球マイクロクラスター形成を用いた免疫疲弊機構の解明抗腫瘍免疫応答の中心的役割を果たすT細胞は、担癌宿主内で慢性的な抗原刺激を受けることで疲弊状態となる。仮に抗腫瘍免疫応答が成立しても、疲弊状態のT細胞機能は減弱し、癌を排除できなくなると考えられている。現状では、T細胞の機能評価は結果を得るまで数日要する。T細胞集団の機能低下や疲弊の程度を、迅速に評価可能な系を確立することが重要な課題と考える。よって本研究課題では、T細胞の特徴的な活性化現象であるマイクロクラスター形成(MC形成)の後に生じる、Immunogical synapse形成(IS形成)の程度を、イメージングサイトメトリーで測定する系を用い、主にヒト末梢血T細胞を用いて検討を行った。
