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  1. Article ; Online: Colon-cancer liver metastasis is effectively targeted by recombinant methioninase (rMETase) in an orthotopic mouse model.

    Miyake, Kentaro / Han, Qinghong / Murakami, Takashi / Kiyuna, Tasuku / Kawaguchi, Kei / Igarashi, Kentaro / Lwin, Thinzar M / Miyake, Masuyo / Yamamoto, Jun / Bouvet, Michael / Endo, Itaru / Hoffman, Robert M

    Tissue & cell

    2023  Volume 83, Page(s) 102125

    Abstract: Background: Colorectal cancer liver metastasis (CCLM) is the most frequent cause of death of colorectal cancer. Development of novel new effective therapy is needed for CCLM patients to improve outcome. The aim of the present study was to investigate ... ...

    Abstract Background: Colorectal cancer liver metastasis (CCLM) is the most frequent cause of death of colorectal cancer. Development of novel new effective therapy is needed for CCLM patients to improve outcome. The aim of the present study was to investigate the efficacy of recombinant methioninase (rMETase) on a CCLM orthotopic mouse model of liver metastasis established using the human colon cancer cell line HT29 expressing red fluorescent protein (RFP).
    Materials and methods: Orthotopic CCLM nude mouse models were randomized into two groups: control group (n = 6, PBS 200 µl, i.p., daily); rMETase group (n = 6, 100 units/200 µl, i.p., daily). Tumor volume was measured on day 0 and day 15. Body weight was measured twice a week. All mice were sacrificed on day 15.
    Results: rMETase significantly inhibited the increase of the liver metastasis as determined by RFP fluorescence area and intensity (p = 0.016 and 0.015, respectively). There was no significant difference of body weight between either group on any day.
    Conclusions: The present study suggests that rMETase has future potential therapy for CCLM in the clinic.
    MeSH term(s) Humans ; Mice ; Animals ; Colonic Neoplasms/drug therapy ; Colonic Neoplasms/pathology ; Body Weight ; Liver Neoplasms/drug therapy
    Chemical Substances L-methionine gamma-lyase (EC 4.4.1.11)
    Language English
    Publishing date 2023-06-02
    Publishing country Scotland
    Document type Journal Article
    ZDB-ID 204424-9
    ISSN 1532-3072 ; 0040-8166
    ISSN (online) 1532-3072
    ISSN 0040-8166
    DOI 10.1016/j.tice.2023.102125
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Synergy of oral recombinant methioninase (rMETase) and 5-fluorouracil on poorly differentiated gastric cancer.

    Miyake, Masuyo / Miyake, Kentaro / Han, Qinghong / Igarashi, Kentaro / Kawaguchi, Kei / Barangi, Maryam / Kiyuna, Tasuku / Sugisawa, Norihiko / Higuchi, Takashi / Oshiro, Hiromichi / Zhang, Zhiying / Razmjooei, Sahar / Bouvet, Michael / Endo, Itaru / Hoffman, Robert M

    Biochemical and biophysical research communications

    2022  Volume 643, Page(s) 48–54

    Abstract: Gastric cancer is highly malignant and recalcitrant to first line chemotherapies that include 5-fluorouracil (5-FU). Cancer cells are addicted to methionine for their proliferation and survival. Methionine addiction of cancer is known as the Hoffman ... ...

    Abstract Gastric cancer is highly malignant and recalcitrant to first line chemotherapies that include 5-fluorouracil (5-FU). Cancer cells are addicted to methionine for their proliferation and survival. Methionine addiction of cancer is known as the Hoffman effect. Methionine restriction with recombinant methioninase (rMETase) has been shown to selectively starve cancer cells and has shown synergy with cytotoxic chemotherapy including 5-FU. The present study aimed to investigate the efficacy of rMETase alone and the combination with 5-FU on poorly differentiated human gastric cancer cell lines (MKN45, NUGC3, and NUGC4) in vitro and vivo. rMETase suppressed the tumor growth of 3 kinds of poorly differentiated gastric cancer cells in vitro. The fluorescence ubiquitination-based cell cycle indicator (FUCCI) demonstrated cancer cells treated with rMETase were selectively trapped in the S/G
    MeSH term(s) Mice ; Humans ; Animals ; Fluorouracil/therapeutic use ; Stomach Neoplasms/drug therapy ; Carbon-Sulfur Lyases ; Methionine/metabolism ; Recombinant Proteins/pharmacology
    Chemical Substances Fluorouracil (U3P01618RT) ; L-methionine gamma-lyase (EC 4.4.1.11) ; Carbon-Sulfur Lyases (EC 4.4.-) ; Methionine (AE28F7PNPL) ; Recombinant Proteins
    Language English
    Publishing date 2022-12-21
    Publishing country United States
    Document type Journal Article
    ZDB-ID 205723-2
    ISSN 1090-2104 ; 0006-291X ; 0006-291X
    ISSN (online) 1090-2104 ; 0006-291X
    ISSN 0006-291X
    DOI 10.1016/j.bbrc.2022.12.062
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  3. Article: Efficacy of Tumor-Targeting

    Murakami, Takashi / Hiroshima, Yukihiko / Miyake, Kentaro / Kiyuna, Tasuku / Endo, Itaru / Zhao, Ming / Hoffman, Robert M

    Cells

    2019  Volume 8, Issue 6

    Abstract: We developed tumor- ... ...

    Abstract We developed tumor-targeting
    MeSH term(s) Animals ; Humans ; Mice ; Neoplasms/therapy ; Salmonella typhimurium/physiology ; Xenograft Model Antitumor Assays
    Language English
    Publishing date 2019-06-16
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2661518-6
    ISSN 2073-4409
    ISSN 2073-4409
    DOI 10.3390/cells8060599
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  4. Article ; Online: Imaging the interaction of α

    Tome, Yasunori / Kiyuna, Tasuku / Uehara, Fuminari / Bouvet, Michael / Tsuchiya, Hiroyuki / Kanaya, Fuminori / Hoffman, Robert M

    Journal of cellular biochemistry

    2018  Volume 120, Issue 1, Page(s) 283–289

    Abstract: Human osteosarcoma 143B cells were previously stably transfected with an ... ...

    Abstract Human osteosarcoma 143B cells were previously stably transfected with an α
    MeSH term(s) Animals ; Bone Neoplasms/metabolism ; Bone Neoplasms/pathology ; Cell Line, Tumor ; Collagen/metabolism ; Fibroblasts/metabolism ; Green Fluorescent Proteins/genetics ; Green Fluorescent Proteins/metabolism ; Humans ; Integrin alphaV/genetics ; Integrin alphaV/metabolism ; Luminescent Proteins/metabolism ; Lung Neoplasms/metabolism ; Lung Neoplasms/secondary ; Macrophages/metabolism ; Male ; Mice ; Mice, Nude ; Mice, Transgenic ; Microscopy, Confocal ; Osteosarcoma/metabolism ; Osteosarcoma/pathology ; Stromal Cells/metabolism ; Transfection ; Transplantation, Heterologous ; Tumor Microenvironment ; Red Fluorescent Protein
    Chemical Substances Integrin alphaV ; Luminescent Proteins ; Green Fluorescent Proteins (147336-22-9) ; Collagen (9007-34-5)
    Language English
    Publishing date 2018-08-26
    Publishing country United States
    Document type Journal Article
    ZDB-ID 392402-6
    ISSN 1097-4644 ; 0730-2312
    ISSN (online) 1097-4644
    ISSN 0730-2312
    DOI 10.1002/jcb.27353
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  5. Article ; Online: Tumor-targeting

    Kiyuna, Tasuku / Tome, Yasunori / Uehara, Fuminari / Murakami, Takashi / Zhang, Yong / Zhao, Ming / Kanaya, Fuminori / Hoffman, Robert M

    Anticancer research

    2018  Volume 38, Issue 1, Page(s) 159–164

    Abstract: Background: We previously developed a color-coded imaging model that can quantify the length of nascent blood vessels using Gelfoam® implanted in nestin-driven green fluorescent protein (ND-GFP) nude mice. In this model, nascent blood vessels ... ...

    Abstract Background: We previously developed a color-coded imaging model that can quantify the length of nascent blood vessels using Gelfoam® implanted in nestin-driven green fluorescent protein (ND-GFP) nude mice. In this model, nascent blood vessels selectively express GFP. We also previously showed that osteosarcoma cells promote angiogenesis in this assay. We have also previously demonstrated the tumor-targeting bacteria Salmonella typhimurium A1-R (S. typhimurium A1-R) can inhibit or regress all tested tumor types in mouse models. The aim of the present study was to determine if S. typhimurium A1-R could inhibit osteosarcoma angiogenesis in the in vivo Gelfoam® color-coded imaging assay.
    Materials and methods: Gelfoam® was implanted subcutaneously in ND-GFP nude mice. Skin flaps were made 7 days after implantation and 143B-RFP human osteosarcoma cells expressing red fluorescent protein (RFP) were injected into the implanted Gelfoam. After establishment of tumors in the Gelfoam®, control-group mice were treated with phosphate buffered saline via tail-vein injection (iv) and the experimental group was treated with S. typhimurium A1-R iv Skin flaps were made at day 7, 14, 21, and 28 after implantation of the Gelfoam® to allow imaging of vascularization in the Gelfoam® using a variable-magnification small-animal imaging system and confocal fluorescence microscopy.
    Results: Nascent blood vessels expressing ND-GFP extended into the Gelfoam® over time in both groups. However, the extent of nascent blood-vessel growth was significantly inhibited by S. typhimurium A1-R treatment by day 28.
    Conclusion: The present results indicate S. typhimurium A1-R has potential for anti-angiogenic targeted therapy of osteosarcoma.
    MeSH term(s) Animals ; Bone Neoplasms/blood supply ; Bone Neoplasms/pathology ; Bone Neoplasms/therapy ; Cell Line, Tumor ; Female ; Humans ; Mice, Nude ; Mice, Transgenic ; Neovascularization, Pathologic/therapy ; Osteosarcoma/blood supply ; Osteosarcoma/pathology ; Osteosarcoma/therapy ; Salmonella typhimurium
    Language English
    Publishing date 2018
    Publishing country Greece
    Document type Journal Article
    ZDB-ID 604549-2
    ISSN 1791-7530 ; 0250-7005
    ISSN (online) 1791-7530
    ISSN 0250-7005
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Fluorescence-guided Surgery with Splenic Preservation Prevents Tumor Recurrence in an Orthotopic Nude-mouse Model of Human Pancreatic Cancer.

    Hwang, Ho Kyoung / Kang, Chang Moo / Lee, Sung Hwan / Murakami, Takashi / Kiyuna, Tasuku / Kim, Se Hoon / Hoffman, Robert M / Bouvet, Michael

    Anticancer research

    2018  Volume 38, Issue 2, Page(s) 665–670

    Abstract: Aim: The purpose of this study was to investigate whether splenectomy influences tumor recurrence after fluorescence-guided surgery (FGS) in an orthotopic nude-mouse model of pancreatic cancer.: Materials and methods: Green fluorescence protein (GFP)- ...

    Abstract Aim: The purpose of this study was to investigate whether splenectomy influences tumor recurrence after fluorescence-guided surgery (FGS) in an orthotopic nude-mouse model of pancreatic cancer.
    Materials and methods: Green fluorescence protein (GFP)-labeled human pancreatic cancer cells (MiaPaCa2-GFP) were subcutaneously injected into the flanks of nude mice. Subcutaneous tumors were harvested and surgical orthotopic implantation (SOI) was performed in the tail of the pancreas with small tumor fragments. FGS was performed 21 days after SOI. Mice were then randomly divided into FGS-only control group (n=7) and FGS plus splenectomy group (n=8). Tumor recurrence was analyzed by laparotomy 21 days after FGS.
    Results: In the control group, no recurrence was found. In contrast, multiple peritoneal seeded nodules were observed in two mice of the splenectomy group (0% vs. 25%, p=0.467).
    Conclusion: Postoperative tumor recurrence only occurred in the splenectomy-treated group suggesting that FGS can spare the patient the morbidity of splenectomy.
    MeSH term(s) Animals ; Cell Line, Tumor ; Fluorescence ; Humans ; Mice, Nude ; Neoplasm Recurrence, Local ; Organ Sparing Treatments/methods ; Pancreatic Neoplasms/pathology ; Pancreatic Neoplasms/surgery ; Spleen/pathology ; Spleen/surgery ; Splenectomy/methods ; Xenograft Model Antitumor Assays
    Language English
    Publishing date 2018
    Publishing country Greece
    Document type Journal Article
    ZDB-ID 604549-2
    ISSN 1791-7530 ; 0250-7005
    ISSN (online) 1791-7530
    ISSN 0250-7005
    DOI 10.21873/anticanres.12270
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  7. Article ; Online: A novel patient-derived orthotopic xenograft (PDOX) mouse model of highly-aggressive liver metastasis for identification of candidate effective drug-combinations.

    Zhang, Zhiying / Hu, Kaiwen / Miyake, Kentaro / Kiyuna, Tasuku / Oshiro, Hiromichi / Wangsiricharoen, Sintawat / Kawaguchi, Kei / Higuchi, Takashi / Razmjooei, Sahar / Miyake, Masuyo / Chawla, Sant P / Singh, Shree Ram / Hoffman, Robert M

    Scientific reports

    2020  Volume 10, Issue 1, Page(s) 20105

    Abstract: Liver metastasis is a recalcitrant disease that usually leads to death of the patient. The present study established a unique patient-derived orthotopic xenograft (PDOX) nude mouse model of a highly aggressive liver metastasis of colon cancer. The aim of ...

    Abstract Liver metastasis is a recalcitrant disease that usually leads to death of the patient. The present study established a unique patient-derived orthotopic xenograft (PDOX) nude mouse model of a highly aggressive liver metastasis of colon cancer. The aim of the present study was to demonstrate proof-of-concept that candidate drug combinations could significantly inhibit growth and re-metastasis of this recalcitrant tumor. The patient's liver metastasis was initially established subcutaneously in nude mice and the subcutaneous tumor tissue was then orthotopically implanted in the liver of nude mice to establish a PDOX model. Two studies were performed to test different drugs or drug combination, indicating that 5-fluorouracil (5-FU) + irinotecan (IRI) + bevacizumab (BEV) and regorafenib (REG) + selumetinib (SEL) had significantly inhibited liver metastasis growth (p = 0.013 and p = 0.035, respectively), and prevented liver satellite metastasis. This study is proof of concept that a PDOX model of highly aggressive colon-cancer metastasis can identify effective drug combinations and that the model has future clinical potential.
    MeSH term(s) Animals ; Antineoplastic Combined Chemotherapy Protocols/pharmacology ; Benzimidazoles/administration & dosage ; Bevacizumab/administration & dosage ; Body Weight/drug effects ; Colonic Neoplasms/pathology ; Fluorouracil/administration & dosage ; Humans ; Irinotecan/administration & dosage ; Liver Neoplasms, Experimental/drug therapy ; Liver Neoplasms, Experimental/pathology ; Liver Neoplasms, Experimental/secondary ; Mice, Nude ; Phenylurea Compounds/administration & dosage ; Proof of Concept Study ; Pyridines/administration & dosage ; Xenograft Model Antitumor Assays/methods
    Chemical Substances AZD 6244 ; Benzimidazoles ; Phenylurea Compounds ; Pyridines ; regorafenib (24T2A1DOYB) ; Bevacizumab (2S9ZZM9Q9V) ; Irinotecan (7673326042) ; Fluorouracil (U3P01618RT)
    Language English
    Publishing date 2020-11-18
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-020-76708-9
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  8. Article ; Online: Eribulin Regresses a Doxorubicin-resistant Dedifferentiated Liposarcoma in a Patient-derived Orthotopic Xenograft Mouse Model.

    Igarashi, Kentaro / Kawaguchi, Kei / Kiyuna, Tasuku / Miyake, Kentaro / Higuchi, Takashi / Yamamoto, Norio / Hayashi, Katsuhiro / Kimura, Hiroaki / Miwa, Shinji / Singh, Shree Ram / Tsuchiya, Hiroyuki / Hoffman, Robert M

    Cancer genomics & proteomics

    2020  Volume 17, Issue 4, Page(s) 351–358

    Abstract: Background/aim: Dedifferentiated liposarcoma (DDLPS) is recalcitrant type of sarcoma. DDLPS has a low survival rate with high recurrence and metastasis. In the present study, we evaluated the efficacy of several drugs against doxorubicin-resistant DDLPS ...

    Abstract Background/aim: Dedifferentiated liposarcoma (DDLPS) is recalcitrant type of sarcoma. DDLPS has a low survival rate with high recurrence and metastasis. In the present study, we evaluated the efficacy of several drugs against doxorubicin-resistant DDLPS in a patient-derived orthotopic xenograft (PDOX) model for precision oncology. To establish the PDOX model, a tumor from a patient who had recurrent high-grade DDLPS from the retroperitoneum was previously grown orthotopically in the retroperitoneum of nude mice.
    Materials and methods: We randomized DDLPS PDOX models into 8 treatment groups when tumor volume became approximately 100 mm
    Results: At the end of treatment (day 14), all treatments significantly inhibited DDLPS PDOX tumor growth compared to the untreated control, except DOX. ERB was significantly more effective and regressed tumor volume compared to other treatments on day 14 after initiation of treatment. No significant differences were found in the relative body weight on day 14 compared to day 0 in any group.
    Conclusion: The clinical potential of ERB against DDLPS is herein presented in a PDOX model.
    MeSH term(s) Animals ; Antineoplastic Combined Chemotherapy Protocols/pharmacology ; Apoptosis ; Cell Dedifferentiation ; Cell Proliferation ; Deoxycytidine/administration & dosage ; Deoxycytidine/analogs & derivatives ; Docetaxel/administration & dosage ; Doxorubicin/administration & dosage ; Drug Resistance, Neoplasm/drug effects ; Furans/administration & dosage ; Humans ; Ketones/administration & dosage ; Liposarcoma/drug therapy ; Liposarcoma/pathology ; Male ; Mice ; Mice, Nude ; Piperazines/administration & dosage ; Pyridines/administration & dosage ; Pyrimidines/administration & dosage ; Sulfonamides/administration & dosage ; Tumor Cells, Cultured ; Xenograft Model Antitumor Assays
    Chemical Substances Furans ; Ketones ; Piperazines ; Pyridines ; Pyrimidines ; Sulfonamides ; Deoxycytidine (0W860991D6) ; Docetaxel (15H5577CQD) ; pazopanib (7RN5DR86CK) ; Doxorubicin (80168379AG) ; gemcitabine (B76N6SBZ8R) ; palbociclib (G9ZF61LE7G) ; eribulin (LR24G6354G)
    Language English
    Publishing date 2020-06-21
    Publishing country Greece
    Document type Journal Article
    ZDB-ID 2144517-5
    ISSN 1790-6245 ; 1109-6535
    ISSN (online) 1790-6245
    ISSN 1109-6535
    DOI 10.21873/cgp.20194
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  9. Article ; Online: Splenectomy is associated with an aggressive tumor growth pattern and altered host immunity in an orthotopic syngeneic murine pancreatic cancer model.

    Hwang, Ho Kyoung / Murakami, Takashi / Kiyuna, Tasuku / Kim, Se Hoon / Lee, Sung Hwan / Kang, Chang Moo / Hoffman, Robert M / Bouvet, Michael

    Oncotarget

    2017  Volume 8, Issue 51, Page(s) 88827–88834

    Abstract: The purpose of this study was to investigate whether splenectomy influences the tumor growth and metastatic pattern in an orthotopic syngeneic murine pancreatic cancer model. Murine pancreatic cancer cells (PAN02) were subcutaneously injected into the ... ...

    Abstract The purpose of this study was to investigate whether splenectomy influences the tumor growth and metastatic pattern in an orthotopic syngeneic murine pancreatic cancer model. Murine pancreatic cancer cells (PAN02) were subcutaneously injected into the flanks of nude mice. A small tumor fragment (3 mm
    Keywords covid19
    Language English
    Publishing date 2017-10-24
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2560162-3
    ISSN 1949-2553 ; 1949-2553
    ISSN (online) 1949-2553
    ISSN 1949-2553
    DOI 10.18632/oncotarget.21331
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  10. Article ; Online: A patient-derived orthotopic xenograft (PDOX) nude-mouse model precisely identifies effective and ineffective therapies for recurrent leiomyosarcoma.

    Zhang, Zhiying / Hu, Kaiwen / Kiyuna, Tasuku / Miyake, Kentaro / Kawaguchi, Kei / Igarashi, Kentaro / Nelson, Scott D / Li, Yunfeng / Singh, Shree Ram / Hoffman, Robert M

    Pharmacological research

    2019  Volume 142, Page(s) 169–175

    Abstract: Leiomyosarcoma is a rare and recalcitrant disease. Doxorubicin (DOX) is usually considered first-line treatment for this disease, but frequently is ineffective. In order to individualize therapy for this and other cancers, we have developed the patient- ... ...

    Abstract Leiomyosarcoma is a rare and recalcitrant disease. Doxorubicin (DOX) is usually considered first-line treatment for this disease, but frequently is ineffective. In order to individualize therapy for this and other cancers, we have developed the patient-derived orthotopic xenograft (PDOX) mouse model. In the present study, we implanted a recurrent leiomyosarcoma from a resected tumor from the patient's thigh into the femoral muscle of nude mice. The following drugs were tested on the leiomyosarcoma PDOX model: DOX, the combination of gemcitabine (GEM) and docetaxel (DOC), trabectedin (TRA), temozolomide (TEM), pazopanib (PAZ) and olaratumab (OLA). Of these agents GEM/DOC, TRA and TEM were highly effective in the leiomyosarcoma PDOX model, the other agents, including first-line therapy DOX, were ineffective. Thus the leiomyosarcoma PDOX model could precisely distinguish effective and ineffective drugs, demonstrating the potential of the PDOX model for leiomyosarcoma treatment.
    MeSH term(s) Animals ; Antineoplastic Agents/therapeutic use ; Antineoplastic Combined Chemotherapy Protocols/therapeutic use ; Disease Models, Animal ; Humans ; Leiomyosarcoma/drug therapy ; Mice, Nude ; Muscle Neoplasms/drug therapy ; Neoplasm Recurrence, Local/drug therapy ; Treatment Outcome ; Xenograft Model Antitumor Assays
    Chemical Substances Antineoplastic Agents
    Language English
    Publishing date 2019-02-23
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 1003347-6
    ISSN 1096-1186 ; 0031-6989 ; 1043-6618
    ISSN (online) 1096-1186
    ISSN 0031-6989 ; 1043-6618
    DOI 10.1016/j.phrs.2019.02.021
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