1
|
Kim K, Gwak HS, Han N, Hong EK, Choi BK, Lee S, Choi S, Park JH, Seok JH, Jeon Y, Cho H, Lee SJ, Lee Y, Nam KT, Song SW. Chimeric Antigen Receptor T Cells With Modified Interleukin-13 Preferentially Recognize IL13Rα2 and Suppress Malignant Glioma: A Preclinical Study. Front Immunol 2021; 12:715000. [PMID: 34819930 PMCID: PMC8606595 DOI: 10.3389/fimmu.2021.715000] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 10/15/2021] [Indexed: 12/05/2022] Open
Abstract
Background Interleukin-13 receptor α 2 (IL13Rα2) is a promising tumor-directed antigen of malignant glioma (MG). Here, we examine the efficacy and safety of T cells containing a YYB-103 chimeric antigen receptor (CAR) that can preferentially bind to IL13Rα2 on MG cells. Methods IL13 was modified on the extracellular domain by substitution of amino acids with E13K, R66D, S69D, and R109K and stably transfected into human T cells using a retroviral vector. The in vitro efficacy of YYB-103 CAR T cells was tested in cell lines with differing IL13Rα1 and IL13Rα2 expression. The in vivo efficacy of intracerebroventricular (i.c.v.) and intravenous (i.v.) routes of YYB-103 CAR T-cell administration were tested in orthotopic MG mouse models. Immunohistochemical staining of MG was performed using WHO grade 3/4 surgical specimens from 53 patients. IL13Rα2 expression was quantified by H-score calculated from staining intensity and percentage of positive cells. Results Binding affinity assay of YYB-103 verified apparently nil binding to IL13Rα1, which was more selective than previously reported IL13 modification (E13Y). YYB-103 CAR T cells showed selective toxicity toward co-cultured U87MG (IL13Rα1+/IL13Rα2+) cells but not A431 (IL13Rα1+/IL13Rα2-) cells. Consistently, YYB-103 CAR T cells suppressed tumor growth in nude mice receiving orthotopic injection of U87 MG cells. Both i.c.v. and i.v. injections of YYB-103 CAR T cells reduced tumor volume and prolonged overall survival of tumor-bearing mice. The median H-score for IL13Rα2 in patient-derived MG tissue was 5 (mean, 57.5; SD, 87.2; range, 0 to 300). Conclusion This preclinical study demonstrates the efficacy of IL13Rα2-targeted YYB-103 CAR T cells against MG cells. The use of modified IL13 to construct a CAR facilitated the selective targeting of IL13Rα2-expressing MG cells while sparing IL13Rα1-expressing cells. Notably, YYB-103 CAR T cells exhibited effective blood-brain barrier crossing, suggesting compatibility with i.v. administration rather than intracranial injection. Additionally, the high H-score for IL13Rα2 in glioblastoma, especially in conjunction with the poor prognostic markers of wild-type isocitrate dehydrogenase-1 (IDH-1) and unmethylated O6-methyl guanine methyl-transferase (MGMT), could be used to determine the eligibility of patients with recurrent glioblastoma for a future clinical trial of YYB-103 CAR T cells.
Collapse
Affiliation(s)
- Kiwan Kim
- Department of Drug Development I, CellabMED Inc., Seoul, South Korea
| | - Ho-Shin Gwak
- Department of Cancer Biomedical Science, National Cancer Center Graduate School of Cancer Science and Policy, Goyang, South Korea
| | - Nayoung Han
- Department of Pathology, Program for Immunotherapy Research, National Cancer Center, Goyang, South Korea
| | - Eun Kyung Hong
- Department of Pathology, Program for Immunotherapy Research, National Cancer Center, Goyang, South Korea
| | - Beom K. Choi
- Biomedicine Production Branch, Program for Immunotherapy Research, National Cancer Center, Goyang, South Korea
| | - Sangeun Lee
- Department of Drug Development I, CellabMED Inc., Seoul, South Korea
| | - Soyoung Choi
- Department of Drug Development I, CellabMED Inc., Seoul, South Korea
| | - Ju-Hwang Park
- Department of Process Development, CellabMED Inc., Seoul, South Korea
| | - Ji-Hye Seok
- Department of Process Development, CellabMED Inc., Seoul, South Korea
| | - Yeongha Jeon
- Department of Drug Development II, CellabMED Inc., Seoul, South Korea
| | - Hyuntae Cho
- Department of Clinical Development, CellabMED Inc., Seoul, South Korea
| | - Song-Jae Lee
- Research Institute, CellabMED Inc., Seoul, South Korea
| | - Yura Lee
- Severance Biomedical Science Institute, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, South Korea
| | - Ki Taek Nam
- Severance Biomedical Science Institute, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, South Korea
| | | |
Collapse
|
2
|
Kim ST, Hong JY, Park SH, Park JO, Park YW, Park N, Lee H, Hong SH, Lee SJ, Song SW, Kim K, Park YS, Lim HY, Kang WK, Nam DH, Lee JW, Park K, Kim KM, Lee J. First-in-human phase I trial of anti-hepatocyte growth factor antibody (YYB101) in refractory solid tumor patients. Ther Adv Med Oncol 2020; 12:1758835920926796. [PMID: 32536979 PMCID: PMC7268171 DOI: 10.1177/1758835920926796] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 04/24/2020] [Indexed: 12/12/2022] Open
Abstract
Background YYB101, a humanized monoclonal antibody against hepatocyte growth factor (HGF), has shown safety and efficacy in vitro and in vivo. This is a first-in-human trial of this antibody. Materials and Methods YYB101 was administered intravenously to refractory cancer patients once every 4 weeks for 1 month, and then once every 2 weeks until disease progression or intolerable toxicity, at doses of 0.3, 1, 3, 5, 10, 20, 30 mg/kg, according to a 3+3 dose escalation design. Maximum tolerated dose, safety, pharmacokinetics, and pharmacodynamics were studied. HGF, MET, PD-L1, and ERK expression was evaluated for 9 of 17 patients of the expansion cohort (20 mg/kg). Results In 39 patients enrolled, no dose-limiting toxicity was observed at 0.3 mg/kg, and the most commonly detected toxicity was generalized edema (n = 7, 18.9%) followed by pruritis and nausea (n = 5, 13.5%, each), fatigue, anemia, and decreased appetite (n = 4, 10.8%, each). No patient discontinued treatment because of adverse events. YYB101 showed dose-proportional pharmacokinetics up to 30 mg/kg. Partial response in 1 (2.5%) and stable disease in 17 (43.5%) were observed. HGF, MET, PD-L1, and ERK proteins were not significant predictors for treatment response. However, serum HGF level was significantly lowered in responders upon drug administration. RNA sequencing revealed a mesenchymal signature in two long-term responders. Conclusion YYB101 showed favorable safety and efficacy in patients with refractory solid tumors. Based on this phase I trial, a phase II study on the YYB101 + irinotecan combination in refractory metastatic colorectal cancer patients is planned. Conclusion ClinicalTrials.gov Identifier: NCT02499224.
Collapse
Affiliation(s)
- Seung Tae Kim
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea, Republic of (South)
| | - Jung Yong Hong
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea, Republic of (South)
| | - Se Hoon Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea, Republic of (South)
| | - Joon Oh Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea, Republic of (South)
| | - Young Whan Park
- National OncoVenture, National Cancer Center, Goyang, Korea, Republic of (South)
| | - Neunggyu Park
- National OncoVenture, National Cancer Center, Goyang, Korea, Republic of (South)
| | - Hukeun Lee
- National OncoVenture, National Cancer Center, Goyang, Korea, Republic of (South)
| | - Sung Hee Hong
- National OncoVenture, National Cancer Center, Goyang, Korea, Republic of (South)
| | - Song-Jae Lee
- CellabMED Inc, Guro-gu, Seoul, Korea, Republic of (South)
| | - Seong-Won Song
- CellabMED Inc, Guro-gu, Seoul, Korea, Republic of (South)
| | - Kyung Kim
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea, Republic of (South)
| | - Young Suk Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea, Republic of (South)
| | - Ho Yeong Lim
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea, Republic of (South)
| | - Won Ki Kang
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea, Republic of (South)
| | - Do-Hyun Nam
- Department of Neurosurgery, Samsung Medical Center, Sungkyunkwan University School of Medicine Seoul, Korea, Republic of (South)
| | - Jeong-Won Lee
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea, Republic of (South)
| | - Keunchil Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea, Republic of (South)
| | - Kyoung-Mee Kim
- Department of Pathology and Translational Genomics, Samsung Medical Center, Sungkyunkwan University School of Medicine Seoul, Korea, Republic of (South)
| | - Jeeyun Lee
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 06351, Korea
| |
Collapse
|
3
|
Sa JK, Kim SH, Lee JK, Cho HJ, Shin YJ, Shin H, Koo H, Kim D, Lee M, Kang W, Hong SH, Kim JY, Park YW, Song SW, Lee SJ, Joo KM, Nam DH. Identification of genomic and molecular traits that present therapeutic vulnerability to HGF-targeted therapy in glioblastoma. Neuro Oncol 2020; 21:222-233. [PMID: 29939324 DOI: 10.1093/neuonc/noy105] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Cancer is a complex disease with profound genomic alterations and extensive heterogeneity. Recent studies on large-scale genomics have shed light on the impact of core oncogenic pathways, which are frequently dysregulated in a wide spectrum of cancer types. Aberrant activation of the hepatocyte growth factor (HGF) signaling axis has been associated with promoting various oncogenic programs during tumor initiation, progression, and treatment resistance. As a result, HGF-targeted therapy has emerged as an attractive therapeutic approach. However, recent clinical trials involving HGF-targeted therapies have demonstrated rather disappointing results. Thus, an alternative, in-depth assessment of new patient stratification is necessary to shift the current clinical course. METHODS To address such challenges, we have evaluated the therapeutic efficacy of YYB-101, an HGF-neutralizing antibody, in a series of primary glioblastoma stem cells (GSCs) both in vitro and in vivo. Furthermore, we performed genome and transcriptome analysis to determine genetic and molecular traits that exhibit therapeutic susceptibility to HGF-mediated therapy. RESULTS We have identified several differentially expressed genes, including MET, KDR, and SOX3, which are associated with tumor invasiveness, malignancy, and unfavorable prognosis in glioblastoma patients. We also demonstrated the HGF-MET signaling axis as a key molecular determinant in GSC invasion, and we discovered that a significant association in HGF expression existed between mesenchymal phenotype and immune cell recruitment. CONCLUSIONS Upregulation of MET and mesenchymal cellular state are essential in generating HGF-mediated therapeutic responses. Our results provide an important framework for evaluating HGF-targeted therapy in future clinical settings.
Collapse
Affiliation(s)
- Jason K Sa
- Institute for Refractory Cancer Research, Samsung Medical Center, Seoul, Republic of Korea.,Research Institute for Future Medicine, Samsung Medical Center, Seoul, Republic of Korea
| | - Sung Heon Kim
- Institute for Refractory Cancer Research, Samsung Medical Center, Seoul, Republic of Korea.,Department of Anatomy and Cell Biology, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Jin-Ku Lee
- Institute for Refractory Cancer Research, Samsung Medical Center, Seoul, Republic of Korea.,Research Institute for Future Medicine, Samsung Medical Center, Seoul, Republic of Korea
| | - Hee Jin Cho
- Institute for Refractory Cancer Research, Samsung Medical Center, Seoul, Republic of Korea.,Research Institute for Future Medicine, Samsung Medical Center, Seoul, Republic of Korea
| | - Yong Jae Shin
- Institute for Refractory Cancer Research, Samsung Medical Center, Seoul, Republic of Korea.,Research Institute for Future Medicine, Samsung Medical Center, Seoul, Republic of Korea.,Department of Neurosurgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Hyemi Shin
- Institute for Refractory Cancer Research, Samsung Medical Center, Seoul, Republic of Korea.,Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, Seoul, Republic of Korea
| | - Harim Koo
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, Seoul, Republic of Korea
| | - Donggeon Kim
- Institute for Refractory Cancer Research, Samsung Medical Center, Seoul, Republic of Korea.,Research Institute for Future Medicine, Samsung Medical Center, Seoul, Republic of Korea
| | - Mijeong Lee
- Institute for Refractory Cancer Research, Samsung Medical Center, Seoul, Republic of Korea.,Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, Seoul, Republic of Korea
| | - Wonyoung Kang
- The Jackson Laboratory for Genomic Medicine, Farmington, Connecticut, USA
| | - Sung Hee Hong
- Hanmi Pharmaceutical Co. Ltd., Songpa-Gu, Seoul, Republic of Korea.,National OncoVenture, National Cancer Center, Goyang-si, Gyeonggi-do, Republic of Korea
| | - Jung Yong Kim
- National OncoVenture, National Cancer Center, Goyang-si, Gyeonggi-do, Republic of Korea
| | - Young-Whan Park
- National OncoVenture, National Cancer Center, Goyang-si, Gyeonggi-do, Republic of Korea
| | - Seong-Won Song
- Yooyoung Pharmaceutical Co. Ltd., Guro-gu, Seoul, Republic of Korea
| | - Song-Jae Lee
- Yooyoung Pharmaceutical Co. Ltd., Guro-gu, Seoul, Republic of Korea
| | - Kyeung Min Joo
- Department of Anatomy and Cell Biology, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.,Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, Seoul, Republic of Korea
| | - Do-Hyun Nam
- Institute for Refractory Cancer Research, Samsung Medical Center, Seoul, Republic of Korea.,Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, Seoul, Republic of Korea.,Department of Neurosurgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| |
Collapse
|
4
|
Kim HJ, Lee S, Oh YS, Chang HK, Kim YS, Hong SH, Kim JY, Park YW, Lee SJ, Song SW, Kim JJ, Heo K. Humanized Anti-hepatocyte Growth Factor Monoclonal Antibody (YYB-101) Inhibits Ovarian Cancer Progression. Front Oncol 2019; 9:571. [PMID: 31355133 PMCID: PMC6631954 DOI: 10.3389/fonc.2019.00571] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 06/12/2019] [Indexed: 11/29/2022] Open
Abstract
Current chemotherapy regimens have certain limitations in improving the survival rates of patients with advanced ovarian cancer. Hepatocyte growth factor (HGF) is important in ovarian cancer cell migration and invasion. This study assessed the effects of YYB-101, a humanized monoclonal anti-HGF antibody, on the growth and metastasis of ovarian cancer cells. YYB-101 suppressed the phosphorylation of the HGF receptor c-MET and inhibited the migration and invasion of SKOV3 and A2780 ovarian cancer cells. Moreover, the combination of YYB-101 and paclitaxel synergistically inhibited tumor growth in an in vivo ovarian cancer mouse xenograft model and significantly increased the overall survival (OS) rate compared with either paclitaxel or YYB-101 alone. Taken together, these findings suggest that YYB-101 has therapeutic potential in ovarian cancer when combined with conventional chemotherapy agents.
Collapse
Affiliation(s)
- Hyun Jung Kim
- Research Institute, National Cancer Center, Goyang-si, South Korea.,Department of Bioinspired Science, Ewha Womans University, Seoul, South Korea
| | - Sukmook Lee
- Department of Applied Chemistry, Kookmin University, Seoul, South Korea
| | - Yong-Seok Oh
- Department of Brain-Cognitive Science, Daegu-Gyeongbuk Institute of Science and Technology, Daegu, South Korea
| | - Ha Kyun Chang
- Center for Uterine Cancer, National Cancer Center, Research Institute and Hospital, Goyang-si, South Korea
| | - Young Sang Kim
- National OncoVenture, National Cancer Center, Goyang-si, South Korea
| | - Sung Hee Hong
- National OncoVenture, National Cancer Center, Goyang-si, South Korea.,Clinical Research Team, Hanmi Pharm. Co., Ltd., Seoul, South Korea
| | - Jung Yong Kim
- National OncoVenture, National Cancer Center, Goyang-si, South Korea
| | - Young-Whan Park
- National OncoVenture, National Cancer Center, Goyang-si, South Korea
| | - Song-Jae Lee
- Yooyoung Central Research Institute, Yooyoung Pharmaceutical Co., Ltd., Seoul, South Korea
| | - Seong-Won Song
- Yooyoung Central Research Institute, Yooyoung Pharmaceutical Co., Ltd., Seoul, South Korea
| | - Jung Ju Kim
- Yooyoung Central Research Institute, Yooyoung Pharmaceutical Co., Ltd., Seoul, South Korea
| | - Kyun Heo
- Research Institute, National Cancer Center, Goyang-si, South Korea
| |
Collapse
|
5
|
Lee J, Kim S, Nam DH, Lee SJ, Park SH, Park JO, Lee JW, Kim KM, Lee H, Park N, Kim HK, Lee SJ, Song SW, Kim JJ, Park YS, Lim HY, Kang WK. First-in-human phase I trial of anti-hepatocyte growth factor (HGF) antibody (YYB101) in refractory solid tumor patients: Integrative pathologic-genomic analysis and the final results. J Clin Oncol 2019. [DOI: 10.1200/jco.2019.37.15_suppl.3104] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
3104 Background: It has been demonstrated in vivo that HGF-MET signaling axis is a key molecular determinant in tumor invasion and there is a significant association in HGF expression and mesenchymal phenotype in addition to immune cell recruitment. We have developed a HGF neutralizing humanized monoclonal antibody antibody, YYB-101. The aim of this study was to determine the maximum tolerate dose (MTD), safety, pharmacokinetics (PK), and pharmacodynamics (PD) of YYB101, in patients with refractory solid tumors. Methods: YYB101 was administered intravenously at once every 2 weeks doses of 0.3, 1, 3, 5, 10, 20, 30 mg/kg, according to a 3+3 dose escalation design. Enrolled patients were planned to receive YYB101 until disease progression or intolerable toxicity. The escalation and expansion cohorts (20mg/kg) were completed. Pre-planned biomarker analysis was performed in parallel. Results: 39 heavily pre-treated refractory cancer patients were enrolled and received YYB101. No DLT was observed. YYB101 demonstrated dose proportional PK up to the dose of 30 mg/kg. No patients discontinued treatment because of adverse events. Based on PK analysis and toxicity data, the recommended dose was determined as 20 mg/kg. Of 39 evaluation patients, there was 1 confirmed partial response for > +14months (2.5%, N = 1; 1 (of 2) sebaceous carcinoma) and 17 stable disease as best response (43.5%, N = 17; 7 (of 13) CRC, 3 (of 4) melanoma, 1 (of 2) sebaceous carcinoma, 1 (of 3) gastric, 1 (of 1) basal cell carcinoma, 2 (of 10) ovarian cancer, 1 (of 1) HCC, 1 (of 1) lung cancer). Of note, 1 sebaceous carcinoma patient who have failed to ≥2+ lines of chemotherapy, have been responding to YYB for 14 months. The MET and HGF expressions by immunohistochemistry (IHC) were evaluated in 19 and 17 tumor specimens, respectively. Neither protein expressions were significant predictors for treatment response to anti-HGF antibody. However, we have observed significant reduction in HGF in responders to YYB. Two long-term responders had mesenchymal signature in RNA sequencing. Conclusions: YYB101 has a favorable safety profile in patients with refractory solid tumors and a dose-proportional PK. Efficacy data are encouraging and phase II combination therapy with YYB101 is planned to be open in metastatic CRC patients as salvage treatment. The predictive power of mesenchymal signature in YYB responders will be defined prospectively. Clinical trial information: 02499224.
Collapse
Affiliation(s)
- Jeeyun Lee
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Seung Kim
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | | | - Su Jin Lee
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Se Hoon Park
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Joon Oh Park
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Jeong-Won Lee
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul , South Korea
| | - Kyoung-Mee Kim
- Department of Pathology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Hukeun Lee
- National OncoVenture, Ilsan, South Korea
| | - Neunggyu Park
- National OncoVenture, National Cancer Center, Goyang, South Korea
| | - Hoon-Kyo Kim
- National OncoVenture, National Cancer Center, Korea, Goyang, South Korea
| | - Song-Jae Lee
- Yooyoung Central Research Institute, Seoul, South Korea
| | | | - Jung Ju Kim
- Yooyoung Pharmaceutical Co. Ltd, Seoul, South Korea
| | - Young Suk Park
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Ho Yeong Lim
- Samsung Medical Center, Sungkyunkwan University, Seoul, South Korea
| | - Won Ki Kang
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| |
Collapse
|
6
|
Lee J, Kim S, Lee S, Park SH, Park JO, Lee JW, Kim KM, Lee H, Hong S, Kim JY, Lee SJ, Song SW, Kim JJ, Park YS, Lim HY, Kang WK, Nam DH. First-in-human phase I trial of anti-hepatocyte growth factor (HGF) antibody (YYB101) in refractory solid tumor patients. J Clin Oncol 2018. [DOI: 10.1200/jco.2018.36.15_suppl.e14501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Jeeyun Lee
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea, Republic of (South)
| | - Seung Kim
- Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, Korea, Republic of (South)
| | - Sujin Lee
- Samsung Medical Center, Seoul, Korea, Republic of (South)
| | - Se Hoon Park
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea, Republic of (South)
| | - Joon Oh Park
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea, Republic of (South)
| | - Jeong-Won Lee
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul , Korea, Republic of (South)
| | - Kyoung Mee Kim
- Department of Pathology, Samsung Medical Center, Seoul, Korea, Republic of (South)
| | - Hukeun Lee
- National OncoVenture, Ilsan, Korea, Republic of (South)
| | - Sung Hong
- National OncoVenture, Ilsan, Korea, Republic of (South)
| | - Jung Yong Kim
- National OncoVenture, National Cancer Center, Goyang, Korea, Republic of (South)
| | - Song-Jae Lee
- Yooyoung Central Research Institute, Seoul, Korea, Republic of (South)
| | | | - Jung Ju Kim
- Yooyoung Pharm., Seoul, Korea, Republic of (South)
| | - Young Suk Park
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea, Republic of (South)
| | - Ho Yeong Lim
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea, Republic of (South)
| | - Won Ki Kang
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea, Republic of (South)
| | - Do-Hyun Nam
- Samsung Medical Center, Gangnam-Gu, Korea, Republic of (South)
| |
Collapse
|
7
|
Choi SY, Park CB, Moon MH, Jeon HW, Song SW, Won YD, Kim YH, Kim YD, Cho DG, Jeong SC. P-225DOES OXYGEN THERAPY INCREASE THE RESOLUTION RATE OF SMALL PNEUMOTHORAX? Interact Cardiovasc Thorac Surg 2017. [DOI: 10.1093/icvts/ivx280.225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
8
|
Kim H, Hong SH, Kim JY, Kim IC, Park YW, Lee SJ, Song SW, Kim JJ, Park G, Kim TM, Kim YH, Park JB, Chung J, Kim IH. Preclinical development of a humanized neutralizing antibody targeting HGF. Exp Mol Med 2017; 49:e309. [PMID: 28336956 PMCID: PMC5382562 DOI: 10.1038/emm.2017.21] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [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: 12/08/2016] [Accepted: 12/23/2016] [Indexed: 12/17/2022] Open
Abstract
Hepatocyte growth factor (HGF) and its receptor, cMET, play critical roles in cell proliferation, angiogenesis and invasion in a wide variety of cancers. We therefore examined the anti-tumor activity of the humanized monoclonal anti-HGF antibody, YYB-101, in nude mice bearing human glioblastoma xenografts as a single agent or in combination with temozolomide. HGF neutralization, The extracellular signal-related kinases 1 and 2 (ERK1/2) phosphorylation, and HGF-induced scattering were assessed in HGF-expressing cell lines treated with YYB-101. To support clinical development, we also evaluated the preclinical pharmacokinetics and toxicokinetics in cynomolgus monkeys, and human and cynomolgus monkey tissue was stained with YYB-101 to test tissue cross-reactivity. We found that YYB-101 inhibited cMET activation in vitro and suppressed tumor growth in the orthotopic mouse model of human glioblastoma. Combination treatment with YYB-101 and temozolomide decreased tumor growth and increased overall survival compared with the effects of either agent alone. Five cancer-related genes (TMEM119, FST, RSPO3, ROS1 and NBL1) were overexpressed in YYB-101-treated mice that showed tumor regrowth. In the tissue cross-reactivity assay, critical cross-reactivity was not observed. The terminal elimination half-life was 21.7 days. Taken together, the in vitro and in vivo data demonstrated the anti-tumor efficacy of YYB-101, which appeared to be mediated by blocking the HGF/cMET interaction. The preclinical pharmacokinetics, toxicokinetics and tissue cross-reactivity data support the clinical development of YYB-101 for advanced cancer.
Collapse
Affiliation(s)
- Hyori Kim
- Asan Institute for Life Sciences, Asan Medical Center, Songpa-gu, Seoul, Republic of Korea
| | - Sung Hee Hong
- National OncoVenture, National Cancer Center, Goyang-si, Gyeonggi-do, Republic of Korea
| | - Jung Yong Kim
- National OncoVenture, National Cancer Center, Goyang-si, Gyeonggi-do, Republic of Korea
| | - In-Chull Kim
- National OncoVenture, National Cancer Center, Goyang-si, Gyeonggi-do, Republic of Korea
| | - Young-Whan Park
- National OncoVenture, National Cancer Center, Goyang-si, Gyeonggi-do, Republic of Korea
| | - Song-Jae Lee
- Yooyoung Central Research Institute, Yooyoung Pharmaceutical Co. Ltd., Guro-gu, Seoul, Republic of Korea
| | - Seong-Won Song
- Yooyoung Central Research Institute, Yooyoung Pharmaceutical Co. Ltd., Guro-gu, Seoul, Republic of Korea
| | - Jung Ju Kim
- Yooyoung Central Research Institute, Yooyoung Pharmaceutical Co. Ltd., Guro-gu, Seoul, Republic of Korea
| | - Gunwoo Park
- Research Institute, National Cancer Center, Goyang-si, Gyeonggi-do, Republic of Korea
| | - Tae Min Kim
- Department of Internal Medicine, Seoul National University Hospital, Jongno-gu, Seoul, Republic of Korea.,Cancer Research Institute, Seoul National University College of Medicine, Jongno-gu, Seoul, Republic of Korea
| | - Yun-Hee Kim
- Graduate School of Cancer Science and Policy, National Cancer Center, Goyang-si, Gyeonggi-do, Republic of Korea.,Research Institute, National Cancer Center, Goyang-si, Gyeonggi-do, Republic of Korea
| | - Jong Bae Park
- Graduate School of Cancer Science and Policy, National Cancer Center, Goyang-si, Gyeonggi-do, Republic of Korea
| | - Junho Chung
- Cancer Research Institute, Seoul National University College of Medicine, Jongno-gu, Seoul, Republic of Korea.,Department of Biochemistry and Molecular Biology, Seoul National University College of Medicine, Jongno-gu, Seoul, Republic of Korea
| | - In-Hoo Kim
- Graduate School of Cancer Science and Policy, National Cancer Center, Goyang-si, Gyeonggi-do, Republic of Korea
| |
Collapse
|
9
|
Woo JK, Kang JH, Kim B, Park BH, Shin KJ, Song SW, Kim JJ, Kim HM, Lee SJ, Oh SH. Humanized anti-hepatocyte growth factor (HGF) antibody suppresses innate irinotecan (CPT-11) resistance induced by fibroblast-derived HGF. Oncotarget 2016; 6:24047-60. [PMID: 26090722 PMCID: PMC4695169 DOI: 10.18632/oncotarget.4369] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Accepted: 05/30/2015] [Indexed: 12/19/2022] Open
Abstract
The growth factors derived from the microenvironment create an environment conducive to tumor growth and survival. HGF deprivation using neutralizing antibody enhanced chemosensitivity in colorectal cancer cells (CRC). We determined secreted HGF in fibroblast conditioned medium (CM). Combination treatment of anti-HGF antibody and irinotecan (CPT-11) directly enhanced CPT-11 sensitivity in CRC. We generated xenograft in NOD/SCID mice inoculating HCT-116 human colorectal cancer cells subcutaneously with or without fibroblast. We found that the combination of CPT-11 and anti-HGF antibody induced marked suppression of tumor development. These results suggest that HGF produced by fibroblast induce CPT-11 resistance, and that anti-HGF antibody abrogate such resistance in vivo. fibroblast-derived HGF is important determinant of chemoresistance. Anti-HGF monoclonal antibody treatment confirmed the importance of this growth factor for chemoresistance in CRC. These results present new options toward the early diagnosis of chemoresistance and suggest novel combinations of chemotherapy and anti-HGF agents to prevent or significantly delay the onset of therapy resistance.
Collapse
Affiliation(s)
- Jong Kyu Woo
- College of Pharmacy, Gachon University, Incheon, Republic of Korea
| | - Ju-Hee Kang
- National Cancer Center, Goyang, Republic of Korea
| | - BoRa Kim
- National Cancer Center, Goyang, Republic of Korea
| | - Byung Hee Park
- College of Pharmacy, Gachon University, Incheon, Republic of Korea
| | | | | | - Jung Ju Kim
- Yooyoung Pharmaceutical Co., Seoul, Republic of Korea
| | - Hwan-Mook Kim
- College of Pharmacy, Gachon University, Incheon, Republic of Korea
| | - Sang-Jin Lee
- National Cancer Center, Goyang, Republic of Korea
| | - Seung Hyun Oh
- College of Pharmacy, Gachon University, Incheon, Republic of Korea
| |
Collapse
|
10
|
Song SW, Lee SJ, Kim CY, Song JK, Jung EJ, Choi YB, Min SW, Oh JW. Inhibition of tumor growth in a mouse xenograft model by the humanized anti-HGF monoclonal antibody YYB-101 produced in a large-scale CHO cell culture. J Microbiol Biotechnol 2014; 23:1327-38. [PMID: 23851271 DOI: 10.4014/jmb.1306.06007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
The humanized anti-hepatocyte growth factor (HGF) monoclonal antibody (mAb) YYB-101 is a promising therapeutic candidate for treating various cancers. In this study, we developed a bioprocess for large-scale production of YYB-101 and evaluated its therapeutic potential for tumor treatment using a xenograft mouse model. By screening diverse chemically defined basal media formulations and by assessing the effects of various feed supplements and feeding schedules on cell growth and antibody production, we established an optimal medium and feeding method to produce 757 mg/l of YYB-101 in flask cultures, representing a 7.5-fold increase in titer compared with that obtained under non-optimized conditions. The optimal dissolved oxygen concentration for antibody production was 70% pO2. A pH shift from 7.2 to 7.0, rather than controlled pH of either 7.0 or 7.2, resulted in productivity improvement in 5 L and 200 L bioreactors, yielding 737 and 830 mg/ml of YYB-101, respectively. The YYB-101 mAb highly purified by affinity chromatography using a Protein A column and two-step ion exchange chromatography effectively neutralized HGF in a cell-based assay and showed potent tumor suppression activity in a mouse xenograft model established with human glioblastoma cells.
Collapse
Affiliation(s)
- Seong-Won Song
- Graduate Program in Biomaterials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea, Department of Biotechnology, Yonsei University, Seoul 120-749, Republic of Korea, Translational Research Center for Protein Function Control, Yonsei University, Seoul 120-749, Republic of Korea
| | | | | | | | | | | | | | | |
Collapse
|
11
|
Song SW, Lee SJ, Kim CY, Han B, Oh JW. Rapid establishment of CHO cell lines producing the anti-hepatocyte growth factor antibody SFN68. J Microbiol Biotechnol 2013; 23:1176-84. [PMID: 23727793 DOI: 10.4014/jmb.1305.05056] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
Anti-hepatocyte growth factor (anti-HGF) monoclonal antibodies (mAbs) are potential therapeutics against various cancers. Screening for high-producer clones is a time-consuming and complex process and is a major hurdle in the development of therapeutic mAbs. Here, we describe an efficient approach that allows the selection of high-producer Chinese hamster ovary (CHO) cell lines producing the novel anti-HGF mAb SFN68, which was generated previously by immunizing HGF bound to its receptor c-Met. We selected an SFN68-producing parental cell line via transfection of the dihydrofolate reductase-deficient CHO cell line DG44, which was preadapted to serum-free suspension culture, with an SFN68-expression vector. Subsequent gene amplification via multiple passages of the parental cell line in a methotrexate-containing medium over 4 weeks, followed by clonal isolation, enabled us to isolate two cell lines, 2F7 and 2H4, with 3-fold higher specific productivity. We also screened 72 different media formulated with diverse feed and basal media to develop a suboptimized medium. In the established suboptimized medium, the highest anti-HGF mAb yields of the 2F7 and 2H4 clones were 842 and 861 mg/l, respectively, which were about 10.5-fold higher than that of the parental cell line in a non-optimized basal medium. The selected CHO cell lines secreting high titers of SFN68 would be useful for the production of sufficient amounts of antibodies for efficacy evaluation in preclinical and early clinical studies.
Collapse
Affiliation(s)
- Seong-Won Song
- Graduate Program in Biomaterials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea , Department of Biotechnology, Yonsei University, Seoul 120-749, Republic of Korea , Translational Research Center for Protein Function Control, Yonsei University, Seoul 120-749, Republic of Korea
| | | | | | | | | |
Collapse
|
12
|
Li Y, Jiang T, Zhang J, Zhang B, Yang W, You G, Xu K, Wu J, Luo C, Song SW. Elevated serum antibodies against insulin-like growth factor-binding protein-2 allow detecting early-stage cancers: evidences from glioma and colorectal carcinoma studies. Ann Oncol 2012; 23:2415-2422. [PMID: 22357443 DOI: 10.1093/annonc/mds007] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Tumor-specific immunity of insulin-like growth factor-binding protein-2 (IGFBP-2) has been reported in several cancers. We aimed to assess the role of serum IGFBP-2 antibodies (IGFBP-2 Abs) in early cancer detection. PATIENTS AND METHODS Glioma and colorectal carcinoma (CRC) were used as models. Serum IGFBP-2 and IGFBP-2 Abs were measured in 260 tumor patients (145 gliomas, 45 colorectal polyps, and 70 CRCs) and 141 controls. Receiver operating characteristic curves were applied. RESULTS Serum IGFBP-2 Ab levels were significantly elevated in tumors (mean: 82 ng/ml, median: 17 ng/ml, range: 0-1387 ng/ml) compared with controls (11, 0, 0-212 ng/ml) (P < 0.0001) and higher in early than advanced cancers opposite of serum IGFBP-2 levels. IGFBP-2 Abs effectively discriminated between controls and grade II and III gliomas [area under the curve (AUC): 0.821-0.864; 95% confidence interval (CI) = 0.762-0.936; P < 0.0001], and CRC I-II (AUC: 0.668; 95% CI = 0.566-0.770; P = 0.002) as well as indicative of advanced polyps at high risk of CRC (AUC: 0.72; 95% CI = 0.630-0.811; P < 0.0001). The sensitivity and specificity for diagnosing grade II-III gliomas reached 66%-84% and 81%. Combined serum IGFBP-2 and IGFBP-2 Abs augmented the discriminative power of all stage tumors (AUC: 0.823), gliomas (AUC: 0.800), and CRCs (AUC = 0.917). CONCLUSION Our results first demonstrate IGFBP-2 Abs for early cancer detection and in combination of serum IGFBP-2 for improved cancer diagnosis.
Collapse
Affiliation(s)
- Y Li
- Department of Oncology, Beijing Shijitan Hospital, The Capital Medical University, Beijing
| | - T Jiang
- Department of Neurosurgery, Tiantan Hospital, Capital Medical University, Beijing
| | - J Zhang
- Laboratory of Disease Genomics and individualized Medicine, Center of Computational Biology, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing
| | - B Zhang
- Key laboratory of Carcinogenesis and Translational Research (Ministry of Education), Clinical Research Laboratory, Peking University School of Oncology, Beijing Cancer Hospital & Institute, Beijing, China
| | - W Yang
- Key laboratory of Carcinogenesis and Translational Research (Ministry of Education), Clinical Research Laboratory, Peking University School of Oncology, Beijing Cancer Hospital & Institute, Beijing, China
| | - G You
- Department of Neurosurgery, Tiantan Hospital, Capital Medical University, Beijing
| | - K Xu
- Department of Oncology, Beijing Shijitan Hospital, The Capital Medical University, Beijing
| | - J Wu
- Department of Oncology, Beijing Shijitan Hospital, The Capital Medical University, Beijing
| | - C Luo
- Department of Oncology, Beijing Shijitan Hospital, The Capital Medical University, Beijing
| | - S W Song
- Key laboratory of Carcinogenesis and Translational Research (Ministry of Education), Clinical Research Laboratory, Peking University School of Oncology, Beijing Cancer Hospital & Institute, Beijing, China.
| |
Collapse
|
13
|
Lim JH, Jun BC, Song SW. Clinical Feasibility of Multiplanar Reconstruction Images of Temporal Bone CT in the Diagnosis of Temporal Bone Fracture with Otic-Capsule-Sparing Facial Nerve Paralysis. Indian J Otolaryngol Head Neck Surg 2012; 65:219-24. [PMID: 24427570 DOI: 10.1007/s12070-011-0471-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [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: 10/17/2011] [Accepted: 12/26/2011] [Indexed: 11/29/2022] Open
Abstract
The aim of this study is to evaluate the feasibility of multiplanar reconstructive (MPR) imaging of temporal bone CT in the diagnosis of temporal bone fracture with oticcapsule-sparing facial nerve paralysis. Twelve patients with traumatic facial nerve paralysis with otic-capsule sparing and temporal bone fractures were selected. Multiplanar reconstruction images were obtained with the V-works 4.0 software program (Cybermed, Seoul, Korea) using axial scanning of high-resolution temporal bone CT of the fracture line. The clinical profiles of the patients displaying temporal bone fractures were examined in relation to the findings. Multiplanar images of the fracture line provided information regarding the direction of the external force that fractured the temporal bone. The fracture line was more continuous in the MPR images than in the axial view. All patients showed an imaginary extended fracture line directed toward the otic capsule. The direction of the fracture line toward the middle ear cavity is important, as it may suggest insult to the otic capsule. The MPR image parallel to the fracture line of the temporal bone provides a guideline for the vector of the force that induced the fracture. Thorough investigation of the critical organs during surgical exploration is recommended if the direction of the fracture in the MPR image points toward the otic capsule in the middle ear even if the fracture line relative to the otic capsule is not well defined in the axial or CT view.
Collapse
Affiliation(s)
- J H Lim
- Department of Radiology, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 65-1 Geumoh-dong, Uijeongbu, Gyeonggi 480-717 Korea
| | - B C Jun
- Department of Otolaryngology-Head and Neck Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 65-1 Geumoh-dong, Uijeongbu, Gyeonggi 480-717 Korea
| | - S W Song
- Department of Radiology, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 65-1 Geumoh-dong, Uijeongbu, Gyeonggi 480-717 Korea
| |
Collapse
|
14
|
Song SW, Guo KJ, Shi R, Cheng Y, Liu YF. Pretreatment with calcitonin gene-related peptide attenuates hepatic ischemia/reperfusion injury in rats. Transplant Proc 2009; 41:1493-8. [PMID: 19545664 DOI: 10.1016/j.transproceed.2009.03.056] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2008] [Accepted: 03/09/2009] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Oxygen free radicals and apoptosis play important roles in liver ischemia/reperfusion (I/R) injury. We sought to investigate the protective effect of calcitonin gene-related peptide (CGRP) to attenuate liver I/R injury due to oxygen free radicals and apoptosis. MATERIALS AND METHODS Harvested rat livers were perfused via the portal vein with 60 mL of 4 degrees C histidine-tryptophan-ketoglutarate (HTK) solution alone in the control group, or with the same solution containing CGRP (3 microg/10 g body weight) in the experimental group. After 24 hours of cold storage, hepatic enzyme leakage, portal venous pressure, oxygen consumption, total adenine nucleotides (TAN), bile production, lipoperoxide (LPO) release, apoptosis, and histochemical changes were evaluated upon 45 minutes of isolated reperfusion. RESULTS Compared with control livers, CGRP-treated organs showed significantly decreased alanine aminotransferase (ALT) and glutamate-lactate dehydrogenase (GLDH) leakage and portal venous pressure (2.0 +/- 0.3 vs 4.0 +/- 0.4 mmHg; P < .01), with significantly increased bile production (8.56 +/- 0.76 vs 3.34 +/- 0.68 microL/g/45 min; P < .01), oxygen consumption (5.14 +/- 0.4 vs 2.57 +/- 0.2 microL/g/min; P < .01), and total adenine nucleotides (TAN) (11.1 +/- 0.71 vs 7.02 +/- 0.53 micromol/g; P < .01) upon reperfusion as signs of recovered viability. We observed infrequent positive terminal deoxynucleotidyl transferase-mediated dUTP biotin nick end labeling (TUNEL) staining, especially in sinusoidal lining cells (SLC). The percentage of TUNEL-positive cells in the CGRP group was significantly decreased compared with the control group: (4.1 +/- 0.67 vs 8.0 +/- 1.27; P < .05). Perfusate levels of low molecular weight (LMW) histone-associated DNA fragments (0.36 +/- 0.04 vs 0.53 +/- 0.06 AU; P < .05) were also decreased, coupled with strong 5'-nucleotidase (5'-NT) and LDH activity staining concentrated on the endothelial cells. LPO release in the perfusate was largely decreased: (0.12 +/- 0.02 vs 0.36 +/- 0.04 nmoL/g, P < .01). CONCLUSION CGRP ameliorated liver I/R injury due to reactive oxygen species and apoptosis.
Collapse
Affiliation(s)
- S W Song
- Department of General Surgery, First Affiliated Hospital, China Medical University, Shenyang, Liaoning, China.
| | | | | | | | | |
Collapse
|
15
|
Song SW, Tolba RH, Yonezawa K, Manekeller S, Minor T. Exogenous superoxide dismutase prevents peroxynitrite-induced apoptosis in non-heart-beating donor livers. Eur Surg Res 2008; 41:353-61. [PMID: 18852490 DOI: 10.1159/000162294] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2007] [Accepted: 05/13/2008] [Indexed: 11/19/2022]
Abstract
OBJECTIVE To investigate the role of oxygen free radicals in the induction of apoptosis in non-heart-beating donor (NHBD) livers, and if superoxide dismutase (SOD) ameliorates these alterations. METHODS Rat livers were perfused via the portal vein with histidine/tryptophan/alpha-ketoglutarate solution from heart-beating donors (HBD) or 60-min warm ischemia from NHBD, with or without the addition of SOD. After 24 h, cold storage livers were evaluated by isolated reperfusion. RESULTS NHBD showed significantly higher enzyme leakage and elevated portal venous pressure (PVP) versus HBD. Bile and total adenine nucleotides (TAN) were significantly decreased. Apoptosis was prominent in sinusoidal lining cells, coupled with strong nitrotyrosine staining (NTR). The concentrations of nitric oxide and lipoperoxides were largely increased. SOD medication reduced hepatic enzyme release by 30% and lipoperoxides by nearly 50%. Apoptosis and NTR were significantly decreased, and PVP was strikingly reduced to normal values. A 3-fold enhancement in bile production and 1.5-fold increase in TAN of the liver tissue were also observed. CONCLUSION NHBD livers are prone to severe reoxygenation injury promoted by oxygen free radicals, massive nitrite oxide production and peroxynitrite-induced apoptosis within the sinusoids. Antioxidant medication with SOD should be considered as a useful means of preserving NHBD livers.
Collapse
Affiliation(s)
- S W Song
- Surgical Research Division, Department of Surgery, University of Bonn, Bonn, Germany
| | | | | | | | | |
Collapse
|
16
|
Thomas PB, Zhu Z, Selvam S, Samant DM, Stevenson D, Mircheff AK, Schechter JE, Song SW, Trousdale MD. Autoimmune dacryoadenitis and keratoconjunctivitis induced in rabbits by subcutaneous injection of autologous lymphocytes activated ex vivo against lacrimal antigens. J Autoimmun 2008; 31:116-22. [PMID: 18534818 DOI: 10.1016/j.jaut.2008.04.019] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2008] [Accepted: 04/17/2008] [Indexed: 11/29/2022]
Abstract
Autologous peripheral blood lymphocytes (PBL), activated in a mixed cell reaction when co-cultured with purified rabbit lacrimal epithelial cells, are known to induce a Sjögren's-like autoimmune dacryoadenitis and keratoconjunctivitis when injected directly back into the donor animal's inferior lacrimal gland (LG). This study shows that autoreactive lymphocytes injected subcutaneously in a site away from the LG is capable of inducing an autoimmune disease in a rabbit. Induced disease (ID) develops more slowly, taking 4weeks as compared to 2weeks in the direct injection model. Initially, both clinical symptoms and histopathology are less pronounced than in the direct injection ID model, but later the immunocytochemistry shows the same CD4+/CD8+ ratio of 4:1 for both injection methods. The finding that lymphocytes activated against lacrimal antigens can travel or home from the injection site back to the inferior and superior LG, as well as the conjunctiva, suggests that these anatomical sites may have common epitopes that induce pathogenic CD4+ T cells that produce a Sjögren's-like syndrome.
Collapse
Affiliation(s)
- P B Thomas
- Ocular Surface Center, Department. of Ophthalmology, Doheny Eye Institute, 1450 San Pablo Street, Los Angeles, CA 90033-4682, USA
| | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Lee SY, Min BH, Song SW, Oh SY, Lim SM, Kim SL, Kim DI. Polyacrylamide gel immobilization of porcine liver esterase for the enantioselective production of levofloxacin. BIOTECHNOL BIOPROC E 2001. [DOI: 10.1007/bf02932547] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
18
|
Abstract
Galectin-3 was detected immunohistochemically in nine canine gastric carcinomas. In normal gastric tissue adjacent to the neoplasms, the gastric epithelial cells showed faint immunolabelling for galectin-3, but in all the tumours the neoplastic cells showed moderate to strong immunolabelling. Galectin-3 was localized in the cytoplasm of the normal mucosal cells, whereas it was found in both the cytoplasm and the nucleus of the neoplastic cells. Positive cells typically exhibited dark brown coloration of the nucleus or cytoplasm, without background labelling. The results suggest that galactin-3 has a pathophysiological role in canine gastric carcinoma.
Collapse
Affiliation(s)
- H J Woo
- Department of Immunology, Seoul National University, Suwon 441-744, Kyounggi-Do, Republic of Korea
| | | | | | | | | |
Collapse
|
19
|
|
20
|
Abstract
PURPOSE To evaluate the use of multifocal phototherapeutic keratectomy (PTK) for the treatment of indolent and persistent epithelial defect (PED). SETTING Department of Ophthalmology, Kangnam St. Mary's Hospital, The Catholic University of Korea, College of Medicine, Seoul, Korea. METHODS Fifteen eyes diagnosed with PED were treated with Summit excimer laser PTK. In all patients (N = 15), the epithelium had previously failed to cover with at least 1 method of medical or surgical treatment. Multifocal ablations were delivered to the elevated margin surrounding the epithelial defect area using PTK with a diameter of 1.0 mm and depth of 150 to 200 pulse ablations. The mean follow-up was 17.7 months (range 9 to 37 months). RESULTS Complete reepithelialization occurred within 7 days in 13 eyes and within 11 days and 12 days in 1 eye each. All corneas except 1 remained healed for at least 9 months of follow-up. One eye had a recurrence 3 months after PTK and was retreated. Postoperative visual acuity improved in 8 eyes and was unaltered in 7. CONCLUSION Multifocal PTK with the 193 nm excimer laser is a safe, effective treatment for PED that is unresponsive to conventional therapy.
Collapse
Affiliation(s)
- M S Kim
- Department of Ophthalmology, Kangnam St. Mary's Hospital, The Catholic University of Korea, College of Medicine, Seoul, South Korea.
| | | | | | | |
Collapse
|
21
|
Lim SM, Song SW, Kim SL, Jang YJ, Kim KH, Kim HJ. Comparison between of the attenuated BR-Oka and the wild type strain of Varicella Zoster Virus (VZV) on the DNA level. Arch Pharm Res 2000; 23:418-23. [PMID: 10976594 DOI: 10.1007/bf02975458] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Oka strain VR-795 (Varicella Zoster Virus, VZV) of American Type Culture Collection (ATCC) has been used for chickenpox vaccine production. In order to use this strain for vaccine production, the strain must be identified and its stability must be confirmed. The identification of the Oka strain has been confirmed using Restriction Fragment Length Polymorphism (RFLP) and DNA sequence analysis of glycoprotein-II (gp-II). The amino acid sequences of Oka deduced from the DNA sequence of gp-II have changed at three amino acids against Ellen and at one amino acid against Webster. To prove the stability of the Oka strain during the passage, RFLP and DNA sequence analyses were also used with 11, 15 and 23 times of virus passage. We found that the Oka strain was stable at passages of up to 23 times, based on the RFLP and DNA sequence analyses. The confirmed Oka strain was renamed as BR-Oka for the purposes of chickenpox vaccine production.
Collapse
Affiliation(s)
- S M Lim
- Boryung Central Research Institute, Boryung Pharm.Co.,Ltd., Kyungki-Do, Korea
| | | | | | | | | | | |
Collapse
|
22
|
Schneeberger AG, King GJ, Song SW, O'Driscoll SW, Morrey BF, An KN. Kinematics and laxity of the Souter-Strathclyde total elbow prosthesis. J Shoulder Elbow Surg 2000; 9:127-34. [PMID: 10810692] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The motion pattern and laxity of 8 cadaveric elbows were recorded with a 3-dimensional electromagnetic tracking device before and after the Souter-Strathclyde total elbow prosthesis was implanted. The Souter-Strathclyde prosthesis replicates the valgus-varus motion pattern of the intact elbow but causes a significant internal rotation of the ulnar shaft of 8.9 degrees +/- 4.1 degrees (P < .0005) at 110 degrees of elbow flexion. One of the reasons for this unphysiological motion pattern is positioning of the humeral component in a mean of 5.4 degrees +/- 6.4 degrees of external rotation compared with the intact elbow (P = .05). This positioning is related to the design of this device. The Souter-Strathclyde elbow prosthesis has a mean maximum valgus-varus laxity of 6.5 degrees +/- 1.5 degrees compared with 4.3 degrees +/- 2.3 degrees for the intact elbow (P = .004). This implant is more constrained than previously tested devices, which may explain its relatively higher loosening rate.
Collapse
Affiliation(s)
- A G Schneeberger
- Orthopedic Biomechanics Laboratory, Mayo Clinic and Foundation, Rochester, Minn. 55905, USA
| | | | | | | | | | | |
Collapse
|
23
|
Shin HC, Shim HO, Lee YM, Song SW, Kim JH, Chung MK, Han SS, Roh JK. Simultaneous determination of flupyrazofos and its metabolite 1-phenyl-3-trifluoromethyl-5-hydroxypyrazole and flupyrazofos oxon in rat plasma by high-performance liquid chromatography with ultraviolet absorbance detection. J Chromatogr B Biomed Sci Appl 1998; 718:61-8. [PMID: 9832361 DOI: 10.1016/s0378-4347(98)00345-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
An isocratic high-performance liquid chromatography (HPLC) system with UV detection was developed for simultaneous determination of flupyrazofos and its metabolites, 1-phenyl-3-trifluoromethyl-5-hydroxypyrazole and flupyrazofos oxon, in rat plasma. Optimal analytical conditions involved an analytical cartridge column consisting of a phenyl bonded phase, a mobile phase of 50 mM phosphate buffer (pH3.0)-acetonitrile (40:60, v/v) and a UV detection wavelength of 232 nm. Under these conditions the peaks of flupyrazofos and its metabolites were all well separated and the total time for complete separation was less than 12 min. The limit of quantitation was 40 ng/ml for flupyrazofos and 20 ng/ml for PTMHP. Recoveries from rat plasma were higher than 90%. Following intravenous administration of flupyrazofos, the method has been successfully applied in a toxicokinetic study in rats involving plasma samples. Therefore, the current method is a valuable analytical tool for investigating the metabolism and toxicokinetics of flupyrazofos.
Collapse
Affiliation(s)
- H C Shin
- Pharmacokinetics and Toxicokinetics Lab., Toxicology Research Center, Korea Research Institute of Chemical Technology, Taejon, South Korea
| | | | | | | | | | | | | | | |
Collapse
|
24
|
Kim HC, Cha SW, Song SW, Ha CS, Han SS, Roh JK, Lee YS, Furukawa F, Nishikawa A, Takahashi M. Enhancing effects of captafol on the development of GST-P-positive liver cell foci in a medium-term bioassay, and protection by L-cysteine of the enhancement in rats. Cancer Lett 1997; 111:15-20. [PMID: 9022123 DOI: 10.1016/s0304-3835(96)04483-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The modifying effects of captafol and protective effects of L-cysteine on the development of glutathione S-transferase placental form-positive (GST-P +) foci of the liver and expression of proliferating cell nuclear antigen (PCNA) in the kidney were investigated in a medium-term bioassay using D-galactosamine (DGA) in rats. Male 6-week-old F344 rats were initially given a single i.p. injection (200 mg/kg) of diethylnitrosamine (DEN) and after 2 weeks on basal diet, received two i.p. injections of DGA (300 mg/kg) at the ends of weeks 2 and 5, and were fed a diet supplemented with test chemicals for weeks 3-8. Animals in group 1 were given 1500 ppm captafol in the diet, while group 2 received 1500 ppm captafol in diet as well as 1500 ppm L-cysteine in drinking water, animals in control group being given basal diet alone. Positive results regarding increased numbers and areas of GST-P + liver cell foci were obtained in rats treated with captafol alone. On the other hand, significant reduction by L-cysteine in the areas of GST-P + liver cell foci initiated by DEN and promoted by captafol was observed. In addition, the PCNA-labelling indices of renal tubule cells were elevated in rats treated with captafol alone and significantly reduced in rats treated simultaneously with L-cysteine. The protocol used in the present study therefore allowed the in vivo determination of promoting effects of captafol and inhibitory influence of L-cysteine by analyzing GST-P + foci in the livers as marker lesions, within a relatively short period of 8 weeks. Thus, this bioassay protocol could have applicability as a new in vivo assay system for the screening of hepatic carcinogenic or anti-carcinogenic agents.
Collapse
Affiliation(s)
- H C Kim
- Toxicology Research Center, Korea Research Institute of Chemical Technology, Jangdong, Yusong-ku, Daejon, South Korea
| | | | | | | | | | | | | | | | | | | |
Collapse
|
25
|
Davidson SJ, Song SW. A thermally induced alteration in lysosome membranes: salt permeability at 0 and 37 degrees C. Biochim Biophys Acta 1975; 375:274-85. [PMID: 235978 DOI: 10.1016/0005-2736(75)90195-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Preparations of radioactive lysosomes were obtained from mouse kidney after injection of radioactive iodine-labeled bovine ribonuclease. Stability of these lysosomes in various media was estimated from measurements of proteolytic activity towards the ribonuclease, and of ribonuclease retention in particles. The lysosomes were stable at 37 degrees C in isotonic, sucrose-free solutions of KCl, NaCl, and potassium acetate, and in mixtures of these with MgCl2, showing that these salts are relatively impermeant through the lysosomal membranes. The membranes were less permeable to Na+ than to K+. Both KCl and NaCl exerted their optimal protective effects over a broad concentration range above 0.125 M in 0.025 M acetate buffer. Mg2+ enhanced the protective effect of both K4 and Na+; the osmotic effect of 0.075 M NaC1-0.05 M MgCl2 was indistinguishable during the entire course of ribonuclease digestion from that of isotonic sucrose. Osmotic protection by KC1-MgC12 was demonstrated over the H range5.5-7.0. A marked alteration in membrane properties occurs at lower temperatures in 0.11 M KC1-0.01 M MgCl2 such that, at 0 degrees C, K+ permeability is much higher than at 37 degrees C, as shown by a several-fold decrease in stability at the lower temperature.
Collapse
|
26
|
|
27
|
Bang S, Song SW, Youn BB. Field study of an oral contraceptive among IUD drop-outs in rural Korea. Yonsei Med J 1968; 9:168-84. [PMID: 5736715 DOI: 10.3349/ymj.1968.9.2.168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
|
28
|
Yang JM, Bang S, Song SW. Improving access to the IUD: experiments in Koyang. Yonsei Med J 1967; 8:53-63. [PMID: 5604820 DOI: 10.3349/ymj.1967.8.1.53] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
|