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Yi L, Yan J, Wei P, Long S, Wang X, Gu M, Yang B, Chen Y, Ma S, Wang C, Zheng M, Sun Q, Shi Y, Wang G. The levels of soluble CD137 are increased in tuberculosis patients and associated with disease severity and prognosis. Eur J Immunol 2024; 54:e2350796. [PMID: 38922884 DOI: 10.1002/eji.202350796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 04/18/2024] [Accepted: 04/18/2024] [Indexed: 06/28/2024]
Abstract
Tuberculosis (TB) was the leading cause of death from a single infectious agent before the coronavirus pandemic. Therefore, it is important to search for severity biomarkers and devise appropriate therapies. A total of 139 pulmonary TB (PTB) patients and 80 healthy controls (HCs) were recruited for plasma soluble CD137 (sCD137) detection through ELISA. Moreover, pleural effusion sCD137 levels were measured in 85 TB patients and 36 untreated lung cancer patients. The plasma cytokine levels in 64 patients with PTB and blood immune cell subpopulations in 68 patients with PTB were analysed via flow cytometry. Blood sCD137 levels were higher in PTB patients (p = 0.012) and correlated with disease severity (p = 0.0056). The level of sCD137 in tuberculous pleurisy effusion (TPE) was markedly higher than that in malignant pleurisy effusion (p = 0.018). Several blood cytokines, such as IL-6 (p = 0.0147), IL-8 (p = 0.0477), IP-10 (p ≤ 0.0001) and MCP-1 (p = 0.0057), and some laboratory indices were significantly elevated in severe PTB (SE) patients, but the percentages of total lymphocytes (p = 0.002) and cytotoxic T cells (p = 0.036) were significantly lower in SE patients than in non-SE patients. In addition, the sCD137 level was negatively correlated with the percentage of total lymphocytes (p = 0.0008) and cytotoxic T cells (p = 0.0021), and PTB patients with higher plasma sCD137 levels had significantly shorter survival times (p = 0.0041). An increase in sCD137 is a potential biomarker for severe TB and indicates a poor prognosis.
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Affiliation(s)
- Ling Yi
- Department of Central Laboratory, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, Beijing, China
| | - Jun Yan
- Department of Clinical Laboratory, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, Beijing, China
| | - Panjian Wei
- Department of Central Laboratory, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, Beijing, China
| | - Sibo Long
- Department of Clinical Laboratory, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, Beijing, China
| | - Xiaojue Wang
- Department of Central Laboratory, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, Beijing, China
| | - Meng Gu
- Department of Central Laboratory, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, Beijing, China
| | - Bin Yang
- Department of Clinical Laboratory, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, Beijing, China
| | - Yan Chen
- Department of Clinical Laboratory, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, Beijing, China
| | - Shang Ma
- Department of Clinical Laboratory, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, Beijing, China
| | - Chaohong Wang
- Department of Clinical Laboratory, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, Beijing, China
| | - Maike Zheng
- Department of Clinical Laboratory, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, Beijing, China
| | - Qing Sun
- National Clinical Laboratory on Tuberculosis, Beijing Key Laboratory for Drug Resistant Tuberculosis Research, Beijing Chest Hospital, Capital Medical University, Beijing Tuberculosis and Thoracic Tumor Institute, Beijing, China
| | - Yiheng Shi
- Department of Clinical Laboratory, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, Beijing, China
| | - Guirong Wang
- Department of Clinical Laboratory, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, Beijing, China
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Ma Y, Luo F, Zhang Y, Liu Q, Xue J, Huang Y, Zhao Y, Yang Y, Fang W, Zhou T, Chen G, Cao J, Chen Q, She X, Luo P, Liu G, Zhang L, Zhao H. Preclinical characterization and phase 1 results of ADG106 in patients with advanced solid tumors and non-Hodgkin's lymphoma. Cell Rep Med 2024; 5:101414. [PMID: 38330942 PMCID: PMC10897605 DOI: 10.1016/j.xcrm.2024.101414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 11/13/2023] [Accepted: 01/15/2024] [Indexed: 02/10/2024]
Abstract
ADG106, a ligand-blocking agonistic antibody targeting CD137 (4-1BB), exhibits promising results in preclinical studies, demonstrating tumor suppression in various animal models and showing a balanced profile between safety and efficacy. This phase 1 study enrolls 62 patients with advanced malignancies, revealing favorable tolerability up to the 5.0 mg/kg dose level. Dose-limiting toxicity occurs in only one patient (6.3%) at 10.0 mg/kg, resulting in grade 4 neutropenia. The most frequent treatment-related adverse events include leukopenia (22.6%), neutropenia (22.6%), elevated alanine aminotransferase (22.6%), rash (21.0%), itching (17.7%), and elevated aspartate aminotransferase (17.7%). The overall disease control rates are 47.1% for advanced solid tumors and 54.5% for non-Hodgkin's lymphoma. Circulating biomarkers suggest target engagement by ADG106 and immune modulation of circulating T, B, and natural killer cells and cytokines interferon γ and interleukin-6, which may affect the probability of clinical efficacy. ADG106 has a manageable safety profile and preliminary anti-tumor efficacy in patients with advanced cancers (this study was registered at ClinicalTrials.gov: NCT03802955).
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Affiliation(s)
- Yuxiang Ma
- Department of Clinical Research, State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, P.R. China
| | - Fan Luo
- Department of Intensive Care Unit, State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, P.R. China
| | - Yang Zhang
- Department of Clinical Research, State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, P.R. China
| | - Qianwen Liu
- Department of Clinical Research, State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, P.R. China
| | - Jinhui Xue
- Department of Clinical Research, State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, P.R. China
| | - Yan Huang
- Department of Medical Oncology, State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, P.R. China
| | - Yuanyuan Zhao
- Department of Medical Oncology, State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, P.R. China
| | - Yunpeng Yang
- Department of Medical Oncology, State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, P.R. China
| | - Wenfeng Fang
- Department of Medical Oncology, State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, P.R. China
| | - Ting Zhou
- Department of Medical Oncology, State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, P.R. China
| | - Gang Chen
- Department of Medical Oncology, State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, P.R. China
| | - Jiaxin Cao
- Department of Anesthesiology, State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, P.R. China
| | - Qun Chen
- Department of Clinical Research, State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, P.R. China
| | | | | | | | - Li Zhang
- Department of Medical Oncology, State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, P.R. China.
| | - Hongyun Zhao
- Department of Clinical Research, State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, P.R. China.
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Thomas CE, Adibi JJ, Kuipers AL, Diergaarde B, Luu HN, Jin A, Koh WP, Gao YT, Adams-Haduch J, Wang R, Lokshin A, Behari J, Yuan JM. Soluble CD137 and risk of hepatocellular carcinoma: nested case-control studies in cohorts in Shanghai and Singapore. Br J Cancer 2023; 128:2081-2088. [PMID: 36977826 PMCID: PMC10206096 DOI: 10.1038/s41416-023-02223-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 02/15/2023] [Accepted: 02/24/2023] [Indexed: 03/30/2023] Open
Abstract
BACKGROUND The majority of hepatocellular carcinoma (HCC) cases occur in the presence of cirrhosis. Biomarkers of cirrhosis-associated immune dysfunction such as CD8+ T cell cytokines could aid HCC risk assessment. METHODS CD8+ T cell cytokines were determined in pre-diagnostic serum in two studies including 315 HCC case-control pairs in the Shanghai Cohort Study (SCS) and 197 pairs in the Singapore Chinese Health Study (SCHS). Conditional logistic regression was used to estimate odds ratio (OR) and 95% confidence interval (CI) for HCC with levels of five cytokines-soluble CD137 (sCD137), soluble Fas (sFas), perforin, macrophage inflammatory protein 1-beta (MIP-1β), and tumour necrosis factor alpha (TNF-α). RESULTS sCD137 levels were significantly higher in HCC cases than controls in both cohorts (Ps < 0.001). Compared with the lowest quartile, multivariable-adjusted ORs (95% CI) of HCC for the highest sCD137 quartile were 3.79 (1.73, 8.30) in the SCS and 3.49 (1.44, 8.48) in the SCHS. The sCD137-HCC association was independent of hepatitis B seropositivity and follow-up time. No other cytokine was consistently associated with HCC risk. CONCLUSION sCD137 was associated with higher risk of HCC in two studies nested in general population cohorts. sCD137 may be a long-term risk marker of HCC development.
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Affiliation(s)
- Claire E Thomas
- Department of Epidemiology, School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
- UPMC Hillman Cancer Center, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Jennifer J Adibi
- Department of Epidemiology, School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Allison L Kuipers
- Department of Epidemiology, School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Brenda Diergaarde
- UPMC Hillman Cancer Center, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
- Department of Human Genetics, School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Hung N Luu
- Department of Epidemiology, School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
- UPMC Hillman Cancer Center, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Aizhen Jin
- Healthy Longevity Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Woon-Puay Koh
- Healthy Longevity Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Singapore Institute for Clinical Sciences, Agency for Science Technology and Research (A*STAR), Singapore, Singapore
| | - Yu-Tang Gao
- Department of Epidemiology, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jennifer Adams-Haduch
- UPMC Hillman Cancer Center, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Renwei Wang
- UPMC Hillman Cancer Center, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Anna Lokshin
- UPMC Hillman Cancer Center, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
- Departments of Pathology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Jaideep Behari
- UPMC Hillman Cancer Center, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
- Department of Medicine, Division of Gastroenterology, Hepatology, and Nutrition, School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Jian-Min Yuan
- Department of Epidemiology, School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA.
- UPMC Hillman Cancer Center, University of Pittsburgh Medical Center, Pittsburgh, PA, USA.
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Pan S, Zhao W, Li Y, Ying Z, Luo Y, Wang Q, Li X, Lu W, Dong X, Wu Y, Wu X. Prediction of risk and overall survival of pancreatic cancer from blood soluble immune checkpoint-related proteins. Front Immunol 2023; 14:1189161. [PMID: 37256126 PMCID: PMC10225568 DOI: 10.3389/fimmu.2023.1189161] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Accepted: 05/03/2023] [Indexed: 06/01/2023] Open
Abstract
Background Immune checkpoint inhibition holds promise as a novel treatment for pancreatic ductal adenocarcinoma (PDAC). The clinical significance of soluble immune checkpoint (ICK) related proteins have not yet fully explored in PDAC. Methods We comprehensively profiled 14 soluble ICK-related proteins in plasma in 70 PDAC patients and 70 matched healthy controls. Epidemiological data of all subjects were obtained through structured interviews, and patients' clinical data were retrieved from electronical health records. We evaluated the associations between the biomarkers with the risk of PDAC using unconditional multivariate logistic regression. Consensus clustering (k-means algorithm) with significant biomarkers was performed to identify immune subtypes in PDAC patients. Prediction models for overall survival (OS) in PDAC patients were developed using multivariate Cox proportional hazards regression. Harrell's concordance index (C-index), time-dependent receiver operating characteristic (ROC) curve and calibration curve were utilized to evaluate performance of prediction models. Gene expressions of the identified ICK-related proteins in tumors from TCGA were analyzed to provide insight into underlying mechanisms. Results Soluble BTLA, CD28, CD137, GITR and LAG-3 were significantly upregulated in PDAC patients (all q < 0.05), and elevation of each of them was correlated with PDAC increased risk (all p < 0.05). PDAC patients were classified into soluble immune-high and soluble immune-low subtypes, using these 5 biomarkers. Patients in soluble immune-high subtype had significantly poorer OS than those in soluble immune-low subtype (log-rank p = 9.7E-03). The model with clinical variables and soluble immune subtypes had excellent predictive power (C-index = 0.809) for the OS of PDAC patients. Furthermore, the immune subtypes identified with corresponding genes' expression in PDAC tumor samples in TCGA showed an opposite correlation with OS to that of immune subtypes based on blood soluble ICK-related proteins (log-rank p =0.02). The immune-high subtype tumors displayed higher cytolytic activity (CYT) score than immune-low subtype tumors (p < 2E-16). Conclusion Five soluble ICK-related proteins were identified to be significantly associated with the risk and prognosis of PDAC. Patients who were classified as soluble immune-low subtype based on these biomarkers had better overall survival than those of the soluble immune-high subtype.
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Affiliation(s)
- Sai Pan
- Center for Biostatistics, Bioinformatics and Big Data, The Second Affiliated Hospital and School of Public Health, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- The Key Laboratory of Intelligent Preventive Medicine of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Wenting Zhao
- Center for Biostatistics, Bioinformatics and Big Data, The Second Affiliated Hospital and School of Public Health, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- The Key Laboratory of Intelligent Preventive Medicine of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Yizhan Li
- Center for Biostatistics, Bioinformatics and Big Data, The Second Affiliated Hospital and School of Public Health, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- The Key Laboratory of Intelligent Preventive Medicine of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Zhijun Ying
- Center for Biostatistics, Bioinformatics and Big Data, The Second Affiliated Hospital and School of Public Health, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- The Key Laboratory of Intelligent Preventive Medicine of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Yihong Luo
- Center for Biostatistics, Bioinformatics and Big Data, The Second Affiliated Hospital and School of Public Health, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- The Key Laboratory of Intelligent Preventive Medicine of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Qinchuan Wang
- Center for Biostatistics, Bioinformatics and Big Data, The Second Affiliated Hospital and School of Public Health, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- The Key Laboratory of Intelligent Preventive Medicine of Zhejiang Province, Hangzhou, Zhejiang, China
- Department of Surgical Oncology, The Affiliated Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Xiawei Li
- Department of Hepato-Pancreato-Biliary Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Wenjie Lu
- Department of Hepato-Pancreato-Biliary Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Xin Dong
- Department of Hepato-Pancreato-Biliary Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Yulian Wu
- Department of Hepato-Pancreato-Biliary Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Xifeng Wu
- Center for Biostatistics, Bioinformatics and Big Data, The Second Affiliated Hospital and School of Public Health, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- The Key Laboratory of Intelligent Preventive Medicine of Zhejiang Province, Hangzhou, Zhejiang, China
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Scramblases as Regulators of Proteolytic ADAM Function. MEMBRANES 2022; 12:membranes12020185. [PMID: 35207106 PMCID: PMC8880048 DOI: 10.3390/membranes12020185] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 01/25/2022] [Accepted: 02/02/2022] [Indexed: 11/16/2022]
Abstract
Proteolytic ectodomain release is a key mechanism for regulating the function of many cell surface proteins. The sheddases ADAM10 and ADAM17 are the best-characterized members of the family of transmembrane disintegrin-like metalloproteinase. Constitutive proteolytic activities are low but can be abruptly upregulated via inside-out signaling triggered by diverse activating events. Emerging evidence indicates that the plasma membrane itself must be assigned a dominant role in upregulation of sheddase function. Data are discussed that tentatively identify phospholipid scramblases as central players during these events. We propose that scramblase-dependent externalization of the negatively charged phospholipid phosphatidylserine (PS) plays an important role in the final activation step of ADAM10 and ADAM17. In this manuscript, we summarize the current knowledge on the interplay of cell membrane changes, PS exposure, and proteolytic activity of transmembrane proteases as well as the potential consequences in the context of immune response, infection, and cancer. The novel concept that scramblases regulate the action of ADAM-proteases may be extendable to other functional proteins that act at the cell surface.
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Weigand K, Peschel G, Grimm J, Luu K, Schacherer D, Wiest R, Müller M, Schwarz H, Buechler C. Soluble CD137 is a novel serum marker of liver cirrhosis in patients with hepatitis C and alcohol-associated disease etiology. Eur J Immunol 2021; 52:633-645. [PMID: 34914098 DOI: 10.1002/eji.202149488] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 11/24/2021] [Accepted: 12/10/2021] [Indexed: 11/06/2022]
Abstract
Defective T-cell functions play a role in the persistence of HCV infection. Activated T cells express CD137, which costimulates antivirus T-cell responses, and this activity is antagonized by soluble CD137 (sCD137). Here, we show that in sera of 81 patients with chronic HCV, sCD137 levels did not correlate with measures of viral infection, and did not decline after virus eradication using direct-acting antivirals. Thus, serum sCD137 was similar in patients infected with HCV and in uninfected controls. Of note, in HCV patients with liver cirrhosis and patients with mostly alcohol-associated liver cirrhosis, sCD137 was increased. A negative association of sCD137 and albumin existed in both cohorts. sCD137 concentrations were similar in hepatic and portal vein blood excluding the liver as the origin of higher levels. Recombinant sCD137 reduced Th1 and Th2 but not Th17 cell polarization in vitro, and accordingly lowered IFN-γ, TNF, and IL-13 in cell media. Serum sCD137 is associated with inflammatory states, and positively correlated with serum TNF in cirrhotic HCV patients following virus eradication. Our study argues against a role of sCD137 in HCV infection and suggests a function of sCD137 in liver cirrhosis, which yet has to be defined.
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Affiliation(s)
- Kilian Weigand
- Department of Internal Medicine I, University Hospital Regensburg, Regensburg, Germany
| | - Georg Peschel
- Department of Internal Medicine I, University Hospital Regensburg, Regensburg, Germany
| | - Jonathan Grimm
- Department of Internal Medicine I, University Hospital Regensburg, Regensburg, Germany
| | - Khang Luu
- Department of Physiology and Immunology Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Doris Schacherer
- Department of Internal Medicine I, University Hospital Regensburg, Regensburg, Germany
| | - Reiner Wiest
- Department of Visceral Surgery and Medicine, University Inselspital, Bern, Switzerland
| | - Martina Müller
- Department of Internal Medicine I, University Hospital Regensburg, Regensburg, Germany
| | - Herbert Schwarz
- Department of Physiology and Immunology Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Christa Buechler
- Department of Internal Medicine I, University Hospital Regensburg, Regensburg, Germany
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Seidel J, Leitzke S, Ahrens B, Sperrhacke M, Bhakdi S, Reiss K. Role of ADAM10 and ADAM17 in Regulating CD137 Function. Int J Mol Sci 2021; 22:2730. [PMID: 33800462 PMCID: PMC7962946 DOI: 10.3390/ijms22052730] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 03/01/2021] [Accepted: 03/05/2021] [Indexed: 12/20/2022] Open
Abstract
Human CD137 (4-1BB), a member of the TNF receptor family, and its ligand CD137L (4-1BBL), are expressed on immune cells and tumor cells. CD137/CD137L interaction mediates bidirectional cellular responses of potential relevance in inflammatory diseases, autoimmunity and oncology. A soluble form of CD137 exists, elevated levels of which have been reported in patients with rheumatoid arthritis and various malignancies. Soluble CD137 (sCD137) is considered to represent a splice variant of CD137. In this report, however, evidence is presented that A Disintegrin and Metalloproteinase (ADAM)10 and potentially also ADAM17 are centrally involved in its generation. Release of sCD137 by transfected cell lines and primary T cells was uniformly inhibitable by ADAM10 inhibition. The shedding function of ADAM10 can be blocked through inhibition of its interaction with surface exposed phosphatidylserine (PS), and this effectively inhibited sCD137 generation. The phospholipid scramblase Anoctamin-6 (ANO6) traffics PS to the outer membrane and thus modifies ADAM10 function. Overexpression of ANO6 increased stimulated shedding, and hyperactive ANO6 led to maximal constitutive shedding of CD137. sCD137 was functionally active and augmented T cell proliferation. Our findings shed new light on the regulation of CD137/CD137L immune responses with potential impact on immunotherapeutic approaches targeting CD137.
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Affiliation(s)
- Jana Seidel
- Department of Dermatology, University of Kiel, 24105 Kiel, Germany; (J.S.); (S.L.); (B.A.); (M.S.)
| | - Sinje Leitzke
- Department of Dermatology, University of Kiel, 24105 Kiel, Germany; (J.S.); (S.L.); (B.A.); (M.S.)
| | - Björn Ahrens
- Department of Dermatology, University of Kiel, 24105 Kiel, Germany; (J.S.); (S.L.); (B.A.); (M.S.)
| | - Maria Sperrhacke
- Department of Dermatology, University of Kiel, 24105 Kiel, Germany; (J.S.); (S.L.); (B.A.); (M.S.)
| | | | - Karina Reiss
- Department of Dermatology, University of Kiel, 24105 Kiel, Germany; (J.S.); (S.L.); (B.A.); (M.S.)
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Ask EH, Tschan-Plessl A, Gjerdingen TJ, Sætersmoen ML, Hoel HJ, Wiiger MT, Olweus J, Wahlin BE, Lingjærde OC, Horowitz A, Cashen AF, Watkins M, Fehniger TA, Holte H, Kolstad A, Malmberg KJ. A Systemic Protein Deviation Score Linked to PD-1+ CD8+ T Cell Expansion That Predicts Overall Survival in Diffuse Large B Cell Lymphoma. MED 2021; 2:180-195.e5. [DOI: 10.1016/j.medj.2020.10.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 10/01/2020] [Accepted: 10/30/2020] [Indexed: 10/22/2022]
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9
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Choi BK, Lee HW. The Murine CD137/CD137 Ligand Signalosome: A Signal Platform Generating Signal Complexity. Front Immunol 2020; 11:553715. [PMID: 33362756 PMCID: PMC7758191 DOI: 10.3389/fimmu.2020.553715] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 11/06/2020] [Indexed: 12/21/2022] Open
Abstract
CD137, a member of the TNFR family, is a costimulatory receptor, and CD137L, a member of the TNF family, is its ligand. Studies using CD137- and CD137L-deficient mice and antibodies against CD137 and CD137L have revealed the diverse and paradoxical effects of these two proteins in various cancers, autoimmunity, infections, and inflammation. Both their cellular diversity and their spatiotemporal expression patterns indicate that they mediate complex immune responses. This intricacy is further enhanced by the bidirectional signal transduction events that occur when these two proteins interact in various types of immune cells. Here, we review the biology of murine CD137/CD137L, particularly, the complexity of their proximal signaling pathways, and speculate on their roles in immune responses.
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Affiliation(s)
- Beom K Choi
- Biomedicine Production Branch, Program for Immunotherapy Research, National Cancer Center, Goyang, South Korea
| | - Hyeon-Woo Lee
- Department of Pharmacology, School of Dentistry, Graduate School, Institute of Oral Biology, Kyung Hee University, Seoul, South Korea
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Abstract
Hodgkin lymphoma (HL) is a unique type of hematopoietic cancer that has few tumor cells but a massive infiltration of immune cells. Findings on how the cancerous Hodgkin and Reed-Sternberg (HRS) cells survive and evade immune surveillance have facilitated the development of novel immunotherapies for HL. Trogocytosis is a fast process of intercellular transfer of membrane patches, which can significantly affect immune responses. In this review, we summarize the current knowledge of how trogocytosis contributes to the suppression of immune responses in HL. We focus on the ectopic expression of CD137 on HRS cells, the cause of its expression, and its implication on developing novel therapies for HL. Further, we review data demonstrating that similar mechanisms apply to CD30, PD-L1 and CTLA-4.
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Affiliation(s)
- Qun Zeng
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Immunology Programme, Life Sciences Institute, National University of Singapore, Singapore
| | - Herbert Schwarz
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Immunology Programme, Life Sciences Institute, National University of Singapore, Singapore
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11
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Luu K, Shao Z, Schwarz H. The relevance of soluble CD137 in the regulation of immune responses and for immunotherapeutic intervention. J Leukoc Biol 2020; 107:731-738. [PMID: 32052477 DOI: 10.1002/jlb.2mr1119-224r] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 11/10/2019] [Accepted: 12/05/2019] [Indexed: 12/13/2022] Open
Abstract
CD137 is a potent costimulatory receptor. Several agonistic anti-CD137 antibodies are currently in clinical trials for tumor immunotherapy. Soluble forms of CD137 (sCD137) are generated by differential splicing and antagonize the activities of membrane-bound CD137 (mCD137) and of therapeutic CD137 agonists. sCD137 is found in sera of patients suffering from autoimmune diseases where it is a natural regulator of immune responses, and which has therapeutic potential for immune-mediated diseases. This review summarizes the current knowledge on sCD137, highlights its potential role in immunotherapy against cancer and in autoimmune diseases, and presents important issues to be addressed by future research.
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Affiliation(s)
- Khang Luu
- Department of Physiology, and Immunology Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Graduate School for Integrative Sciences & Engineering, National University of Singapore, Singapore, Singapore
| | - Zhe Shao
- Department of Physiology, and Immunology Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Herbert Schwarz
- Department of Physiology, and Immunology Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Graduate School for Integrative Sciences & Engineering, National University of Singapore, Singapore, Singapore
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12
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Luu K, Nickles E, Schwarz H. Destroy, what destroys you. Oncoimmunology 2019; 9:1685301. [PMID: 32002301 PMCID: PMC6959443 DOI: 10.1080/2162402x.2019.1685301] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 10/21/2019] [Accepted: 10/23/2019] [Indexed: 11/20/2022] Open
Abstract
New evidence indicates the importance of CD137 for controlling Epstein-Barr virus (EBV) infections. (1) Mutations in CD137 predispose to EBV-associated diseases. (2) EBV induces ectopic CD137 expression, thereby activating a negative feed-back regulation and reducing T cell costimulation. These findings suggest CD137 agonists as new treatments for EBV-associated diseases.
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Affiliation(s)
- Khang Luu
- Department of Physiology, and Immunology Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Graduate School for Integrative Sciences & Engineering, National University of Singapore, Singapore, Singapore
| | - Emily Nickles
- Department of Physiology, and Immunology Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Herbert Schwarz
- Department of Physiology, and Immunology Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Graduate School for Integrative Sciences & Engineering, National University of Singapore, Singapore, Singapore
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13
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Glorieux C, Huang P. Regulation of CD137 expression through K-Ras signaling in pancreatic cancer cells. Cancer Commun (Lond) 2019; 39:41. [PMID: 31288851 PMCID: PMC6615207 DOI: 10.1186/s40880-019-0386-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Accepted: 06/28/2019] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND The interaction between CD137 and its ligand (CD137L) plays a major role in the regulation of immune functions and affects cancer immunotherapy. CD137 is a cell surface protein mainly located on activated T cells, and its regulation and functions in immune cells are well established. However, the expression of CD137 and its regulation in cancer cells remain poorly understood. The main purposes of this study were to examine the expression of CD137 in pancreatic cancer cells and to investigate its underlying mechanisms. METHODS Cells containing inducible K-RasG12V expression vector or with different K-Ras mutational statuses were used as in vitro models to examine the regulation of CD137 expression by K-Ras. Various molecular assays were employed to explore the regulatory mechanisms. Tumor specimens from 15 pancreatic cancer patients and serum samples from 10 patients and 10 healthy donors were used to test if the expression of CD137 could be validated in clinical samples. RESULTS We found that the CD137 protein was expressed on the cell surface in pancreatic cancer tissues and cancer cell lines. Enzyme-linked immunosorbent assay revealed no difference in the levels of secreted CD137 in the sera of patients and healthy donors. By using the K-Ras inducible cell system, we further showed that oncogenic K-Ras up-regulated CD137 through the activation of MAPK (mitogen-activated protein kinases) and NF-κB (nuclear factor kappa-light-chain-enhancer of activated B cells) pathways, as evidenced by significantly reduced CD137 mRNA expression led by genetic silencing of MAPK1 and p65, the key proteins involved in the respective pathways. Furthermore, we also found that the NF-κB pathway was mainly stimulated by the K-Ras-induced secretion of interleukin-1α (IL-1α) which promoted the transcription of the CD137 gene in pancreatic cancer cell lines. Analysis of the TCGA (the cancer genome atlas) database also revealed a significant correlation between IL-1α and CD137 expression (r = 0.274) in tumor samples from pancreatic cancer patients (P < 0.001). CONCLUSIONS The present study has demonstrated that the CD137 protein was expressed on pancreatic cancer cell surface, and has identified a novel mechanism by which K-Ras regulates CD137 in pancreatic cancer cells through MAPK and NF-κB pathways stimulated by IL-1α.
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Affiliation(s)
- Christophe Glorieux
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, 510060, Guangdong, P. R. China.
| | - Peng Huang
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, 510060, Guangdong, P. R. China.
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14
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Maleknia M, Valizadeh A, Pezeshki SMS, Saki N. Immunomodulation in leukemia: cellular aspects of anti-leukemic properties. Clin Transl Oncol 2019; 22:1-10. [DOI: 10.1007/s12094-019-02132-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Accepted: 05/11/2019] [Indexed: 01/21/2023]
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15
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Wu M, Wong HY, Lin JL, Moliner A, Schwarz H. Induction of CD137 expression by viral genes reduces T cell costimulation. J Cell Physiol 2019; 234:21076-21088. [DOI: 10.1002/jcp.28710] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 03/26/2019] [Accepted: 04/10/2019] [Indexed: 12/28/2022]
Affiliation(s)
- Meihui Wu
- Department of Physiology Yong Loo Lin School of Medicine, National University of Singapore Singapore
- Immunology Programme Life Sciences Institute, National University of Singapore Singapore
| | - Hiu Yi Wong
- Department of Physiology Yong Loo Lin School of Medicine, National University of Singapore Singapore
- Immunology Programme Life Sciences Institute, National University of Singapore Singapore
| | - Jia Le Lin
- Department of Physiology Yong Loo Lin School of Medicine, National University of Singapore Singapore
- Immunology Programme Life Sciences Institute, National University of Singapore Singapore
| | - Annalena Moliner
- Immunology Programme Life Sciences Institute, National University of Singapore Singapore
| | - Herbert Schwarz
- Department of Physiology Yong Loo Lin School of Medicine, National University of Singapore Singapore
- Immunology Programme Life Sciences Institute, National University of Singapore Singapore
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16
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Gu D, Ao X, Yang Y, Chen Z, Xu X. Soluble immune checkpoints in cancer: production, function and biological significance. J Immunother Cancer 2018; 6:132. [PMID: 30482248 PMCID: PMC6260693 DOI: 10.1186/s40425-018-0449-0] [Citation(s) in RCA: 166] [Impact Index Per Article: 27.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 11/12/2018] [Indexed: 02/06/2023] Open
Abstract
Immune checkpoints play important roles in immune regulation, and blocking immune checkpoints on the cell membrane is a promising strategy in the treatment of cancer. Based on this, monoclonal antibodies are having much rapid development, such as those against CTLA-4 (cytotoxic T lymphocyte antigen 4) and PD-1 (programmed cell death protein 1).But the cost of preparation of monoclonal antibodies is too high and the therapeutic effect is still under restrictions. Recently, a series of soluble immune checkpoints have been found such as sCTLA-4 (soluble CTLA-4) and sPD-1 (soluble PD-1). They are functional parts of membrane immune checkpoints produced in different ways and can be secreted by immune cells. Moreover, these soluble checkpoints can diffuse in the serum. Much evidence has demonstrated that these soluble checkpoints are involved in positive or negative immune regulation and that changes in their plasma levels affect the development, prognosis and treatment of cancer. Since they are endogenous molecules, they will not induce immunological rejection in human beings, which might make up for the deficiencies of monoclonal antibodies and enhance the utility value of these molecules. Therefore, there is an increasing need for investigating novel soluble checkpoints and their functions, and it is promising to develop relevant therapies in the future. In this review, we describe the production mechanisms and functions of various soluble immune checkpoint receptors and ligands and discuss their biological significance in regard to biomarkers, potential candidate drugs, therapeutic targets, and other topics.
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Affiliation(s)
- Daqian Gu
- Department of Stem Cell & Regenerative Medicine, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing, 400042, People's Republic of China.,First Department, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing, People's Republic of China
| | - Xiang Ao
- Department of Stem Cell & Regenerative Medicine, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing, 400042, People's Republic of China.,First Department, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing, People's Republic of China
| | - Yu Yang
- Department of Stem Cell & Regenerative Medicine, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing, 400042, People's Republic of China.,First Department, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing, People's Republic of China
| | - Zhuo Chen
- Department of Stem Cell & Regenerative Medicine, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing, 400042, People's Republic of China.,First Department, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing, People's Republic of China
| | - Xiang Xu
- Department of Stem Cell & Regenerative Medicine, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing, 400042, People's Republic of China. .,First Department, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing, People's Republic of China.
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17
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Dharmadhikari B, Nickles E, Harfuddin Z, Ishak NDB, Zeng Q, Bertoletti A, Schwarz H. CD137L dendritic cells induce potent response against cancer-associated viruses and polarize human CD8 + T cells to Tc1 phenotype. Cancer Immunol Immunother 2018; 67:893-905. [PMID: 29508025 PMCID: PMC11028277 DOI: 10.1007/s00262-018-2144-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 02/27/2018] [Indexed: 12/14/2022]
Abstract
Therapeutic tumor vaccination based on dendritic cells (DC) is safe; however, its efficacy is low. Among the reasons for only a subset of patients benefitting from DC-based immunotherapy is an insufficient potency of in vitro generated classical DCs (cDCs), made by treating monocytes with GM-CSF + IL-4 + maturation factors. Recent studies demonstrated that CD137L (4-1BBL, TNFSF9) signaling differentiates human monocytes to a highly potent novel type of DC (CD137L-DCs) which have an inflammatory phenotype and are closely related to in vivo DCs. Here, we show that CD137L-DCs induce potent CD8+ T-cell responses against Epstein-Barr virus (EBV) and Hepatitis B virus (HBV), and that T cells primed by CD137L-DCs more effectively lyse EBV+ and HBV+ target cells. The chemokine profile of CD137L-DCs identifies them as inflammatory DCs, and they polarize CD8+ T cells to a Tc1 phenotype. Expression of exhaustion markers is reduced on T cells activated by CD137L-DCs. Furthermore, these T cells are metabolically more active and have a higher capacity to utilize glucose. CD137L-induced monocyte to DC differentiation leads to the formation of AIM2 inflammasome, with IL-1beta contributing to CD137L-DCs possessing a stronger T cell activation ability. CD137L-DCs are effective in crosspresentation. PGE2 as a maturation factor is required for enhancing migration of CD137L-DCs but does not significantly reduce their potency. This study shows that CD137L-DCs have a superior ability to activate T cells and to induce potent Tc1 responses against the cancer-causing viruses EBV and HBV which suggest CD137L-DCs as promising candidates for DC-based tumor immunotherapy.
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Affiliation(s)
- Bhushan Dharmadhikari
- Department of Physiology and Immunology Programme, National University of Singapore (NUS), 2 Medical Dr., Singapore, 117593, Singapore
| | - Emily Nickles
- Department of Physiology and Immunology Programme, National University of Singapore (NUS), 2 Medical Dr., Singapore, 117593, Singapore
| | - Zulkarnain Harfuddin
- Department of Physiology and Immunology Programme, National University of Singapore (NUS), 2 Medical Dr., Singapore, 117593, Singapore
- NUS Graduate School of Integrative Sciences and Engineering, National University of Singapore, Singapore, 117456, Singapore
| | - Nur Diana Binte Ishak
- Department of Physiology and Immunology Programme, National University of Singapore (NUS), 2 Medical Dr., Singapore, 117593, Singapore
| | - Qun Zeng
- Department of Physiology and Immunology Programme, National University of Singapore (NUS), 2 Medical Dr., Singapore, 117593, Singapore
| | | | - Herbert Schwarz
- Department of Physiology and Immunology Programme, National University of Singapore (NUS), 2 Medical Dr., Singapore, 117593, Singapore.
- NUS Graduate School of Integrative Sciences and Engineering, National University of Singapore, Singapore, 117456, Singapore.
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18
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Segal NH, He AR, Doi T, Levy R, Bhatia S, Pishvaian MJ, Cesari R, Chen Y, Davis CB, Huang B, Thall AD, Gopal AK. Phase I Study of Single-Agent Utomilumab (PF-05082566), a 4-1BB/CD137 Agonist, in Patients with Advanced Cancer. Clin Cancer Res 2018; 24:1816-1823. [PMID: 29549159 DOI: 10.1158/1078-0432.ccr-17-1922] [Citation(s) in RCA: 175] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 11/28/2017] [Accepted: 01/24/2018] [Indexed: 11/16/2022]
Abstract
Purpose: Utomilumab (PF-05082566) is an agonistic mAb that engages the immune costimulatory molecule 4-1BB/CD137. In this first-in-human, phase I, open-label, multicenter, multiple-dose study (NCT01307267) we evaluated safety, tolerability, pharmacokinetics, preliminary clinical activity, and pharmacodynamics of single-agent utomilumab in patients with advanced malignancies.Experimental Design: Dose escalation was based on a standard 3+3 design for doses of utomilumab from 0.006 to 0.3 mg/kg every 4 weeks and a time-to-event continual reassessment method for utomilumab 0.6 to 10 mg/kg every 4 weeks. The primary study endpoint was dose-limiting toxicity (DLT) in the first two cycles.Results: Utomilumab demonstrated a well-tolerated safety profile (N = 55). None of the patients experienced a DLT at the dose levels evaluated. The most common treatment-related adverse events were fatigue, pyrexia, decreased appetite, dizziness, and rash (<10% of patients). Only one (1.8%) patient experienced a grade 3-4 treatment-related adverse event (fatigue), and no clinically relevant elevations in transaminases were noted. Utomilumab demonstrated linear pharmacokinetics at doses ranging from 0.006 to 10 mg/kg, with similar safety and pharmacokinetics in anti-drug antibody (ADA)-negative and ADA-positive patients. The overall objective response rate was 3.8% (95% CI, 0.5%-13.0%) in patients with solid tumors and 13.3% in patients with Merkel cell carcinoma, including a complete response and a partial response. Circulating biomarkers support 4-1BB/CD137 engagement by utomilumab and suggest that circulating lymphocyte levels may influence probability of clinical benefit.Conclusions: The favorable safety profile and preliminary antitumor activity demonstrated by utomilumab warrant further evaluation in patients with advanced malignancies. Clin Cancer Res; 24(8); 1816-23. ©2018 AACR.
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Affiliation(s)
- Neil H Segal
- Memorial Sloan Kettering Cancer Center, New York, New York.
| | - Aiwu R He
- Georgetown University, Lombardi Comprehensive Cancer Center, Washington, D.C
| | | | - Ronald Levy
- Stanford University Cancer Center, Stanford, California
| | - Shailender Bhatia
- University of Washington/Fred Hutchinson Cancer Research Center/Seattle Cancer Care Alliance, Seattle, Washington
| | - Michael J Pishvaian
- Georgetown University, Lombardi Comprehensive Cancer Center, Washington, D.C
| | | | - Ying Chen
- Pfizer Oncology, San Diego, California
| | | | - Bo Huang
- Pfizer Oncology, Groton, Connecticut
| | | | - Ajay K Gopal
- University of Washington/Fred Hutchinson Cancer Research Center/Seattle Cancer Care Alliance, Seattle, Washington
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19
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Schmohl JU, Nuebling T, Wild J, Kroell T, Kanz L, Salih HR, Schmetzer H. Expression of 4-1BB and its ligand on blasts correlates with prognosis of patients with AML. J Investig Med 2016; 64:1252-1260. [PMID: 27388616 DOI: 10.1136/jim-2016-000081] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/11/2016] [Indexed: 12/12/2022]
Abstract
Costimulatory ligands (COLs) and their receptors (COR) regulate immune reactions and cellular survival and might be relevant in acute myeloid leukemia (AML). This study evaluated the clinical relevance of 4-1BBL, glucocorticoid-induced TNFR-related protein (GITR) and ligand (GITRL), CD80, and CD86 in case of expression on AML blasts. 98 patients were evaluated at initial diagnosis. Immunophenotypically evaluated specific fluorescence index (SFI) levels of COR and COL on blasts were correlated with morphological, cytogenetic, and several prognostic parameters. Significantly higher COR expression was seen in monocytic versus non-monocytic AML subtypes; GITR, p=0.05; GITRL, p=0.005; CD86, p=0.001). Cut-off values for two COR and their ligands were evaluated: cases presenting with 4-1BB values above cut-off 1.2 SFI levels correlated (tendentially) significantly with a higher probability for disease-free survival (DFS, p=0.06) and a favorable HR of 0.2; p=0.04 for relapse. HR for death was also significantly lower in this group (0.12; p=0.04). In contrast, a lower probability for DFS and overall survival was seen in cases with 4-1BBL expression above 2.2 SFI levels (p=0.08 and p=0.09). In addition, multivariate analysis showed a significantly higher probability of death in this group (HR 10.3, p=0.04). Expression of CD80 and CD86 did not show significant prognostic relevance. On initial diagnosis, 4-1BB and 4-1BBL qualify as markers for prediction of patients' course and represent a valuable screening target for patients with AML at initial diagnosis.
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Affiliation(s)
- Joerg U Schmohl
- Section of Molecular Cancer Therapeutics, Therapeutic Radiology-Radiation Oncology, University of Minnesota, Masonic Cancer Center, Minneapolis, Minnesota, USA.,Department of Hematology and Oncology, Medical Department 2, University Hospital of Tuebingen, Tuebingen, Germany
| | - Tina Nuebling
- Department of Hematology and Oncology, Medical Department 2, University Hospital of Tuebingen, Tuebingen, Germany.,Clinical Collaboration Unit Translational Immunology, Department for Internal Medicine II, German Cancer Consortium and German Cancer Research Center, Partner site Tuebingen, Eberhard Karls University Tuebingen, Tuebingen, Germany
| | - Julia Wild
- Department of Hematology and Oncology, Medical Department 2, University Hospital of Tuebingen, Tuebingen, Germany.,Clinical Collaboration Unit Translational Immunology, Department for Internal Medicine II, German Cancer Consortium and German Cancer Research Center, Partner site Tuebingen, Eberhard Karls University Tuebingen, Tuebingen, Germany
| | - Tanja Kroell
- Department for Hematopoetic Cell Transplantation, Medical Department 3, University Hospital of Munich, Munich, Germany
| | - Lothar Kanz
- Department of Hematology and Oncology, Medical Department 2, University Hospital of Tuebingen, Tuebingen, Germany
| | - Helmut R Salih
- Department of Hematology and Oncology, Medical Department 2, University Hospital of Tuebingen, Tuebingen, Germany.,Clinical Collaboration Unit Translational Immunology, Department for Internal Medicine II, German Cancer Consortium and German Cancer Research Center, Partner site Tuebingen, Eberhard Karls University Tuebingen, Tuebingen, Germany
| | - Helga Schmetzer
- Department for Hematopoetic Cell Transplantation, Medical Department 3, University Hospital of Munich, Munich, Germany
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20
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Rajendran S, Ho WT, Schwarz H. CD137 signaling in Hodgkin and Reed-Sternberg cell lines induces IL-13 secretion, immune deviation and enhanced growth. Oncoimmunology 2016; 5:e1160188. [PMID: 27471634 DOI: 10.1080/2162402x.2016.1160188] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 02/13/2016] [Accepted: 02/25/2016] [Indexed: 01/05/2023] Open
Abstract
CD137 and its ligand, CD137L, are expressed on activated T cells and antigen-presenting cells (APC), respectively, and are powerful inducers of cellular, type 1 immune responses. CD137 is ectopically expressed by Hodgkin and Reed-Sternberg (HRS) cells, the malignant cells in Hodgkin lymphoma (HL). Here we report that CD137 transmits signals into HRS cells, which induce the secretion of IL-13. IL-13 in conditioned supernatants of HRS cell lines inhibits the secretion of IFNγ by peripheral blood mononuclear cells (PBMC). Since IFNγ is essential for the development of a type 1 immune response, CD137-induced IL-13 secretion facilitates escape from immune surveillance. Further, CD137-induced IL-13 enhances the growth of HRS cell lines. CD137, IL-13 double-positive cells could be detected in the majority (58%) of HL patient samples, providing clinical evidence for a role of IL-13 induction by CD137 during HL pathogenesis. This study validates CD137 as a candidate target for immunotherapy of HL.
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Affiliation(s)
| | | | - Herbert Schwarz
- Department of Physiology; NUS Immunology Programme, Life Sciences Institute, National University of Singapore, Singapore
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21
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Dharmadhikari B, Wu M, Abdullah NS, Rajendran S, Ishak ND, Nickles E, Harfuddin Z, Schwarz H. CD137 and CD137L signals are main drivers of type 1, cell-mediated immune responses. Oncoimmunology 2015; 5:e1113367. [PMID: 27141396 DOI: 10.1080/2162402x.2015.1113367] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 10/22/2015] [Accepted: 10/22/2015] [Indexed: 10/22/2022] Open
Abstract
CD137 is expressed on activated T cells and NK cells, among others, and is a potent co-stimulator of antitumor immune responses. CD137 ligand (CD137L) is expressed by antigen presenting cells (APC), and CD137L reverse signaling into APC enhances their activity. CD137-CD137L interactions as main driver of type 1, cell-mediated immune responses explains the puzzling observation that CD137 agonists which enhance antitumor immune responses also ameliorate autoimmune diseases. Upon co-stimulation by CD137, Th1 CD4+ T cells together with Tc1 CD8+ T cells and NK cells inhibit other T cell subsets, thereby promoting antitumor responses and mitigating non-type 1 auto-immune diseases.
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Affiliation(s)
- Bhushan Dharmadhikari
- Department of Physiology, and Immunology Programme, National University of Singapore , Singapore
| | - Meihui Wu
- Department of Physiology, and Immunology Programme, National University of Singapore , Singapore
| | - Nur Sharalyn Abdullah
- Department of Physiology, and Immunology Programme, National University of Singapore , Singapore
| | - Sakthi Rajendran
- Department of Physiology, and Immunology Programme, National University of Singapore , Singapore
| | - Nur Diana Ishak
- Department of Physiology, and Immunology Programme, National University of Singapore , Singapore
| | - Emily Nickles
- Department of Physiology, and Immunology Programme, National University of Singapore , Singapore
| | - Zulkarnain Harfuddin
- Department of Physiology, and Immunology Programme, National University of Singapore, Singapore; NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore
| | - Herbert Schwarz
- Department of Physiology, and Immunology Programme, National University of Singapore, Singapore; NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore
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22
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Pang WL, Ho WT, Schwarz H. Ectopic CD137 expression facilitates the escape of Hodgkin and Reed-Sternberg cells from immunosurveillance. Oncoimmunology 2014; 2:e23441. [PMID: 23734307 PMCID: PMC3654577 DOI: 10.4161/onci.23441] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2012] [Accepted: 12/29/2012] [Indexed: 11/19/2022] Open
Abstract
CD137 is ectopically expressed on Hodgkin and Reed-Sternberg (HRS) cells, causing the removal of the immunostimulatory CD137 ligand from HRS cells as well as from surrounding antigen presenting cells. This inhibits T-cell co-stimulation and supports the immune evasion of Hodgkin’s lymphoma.
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Affiliation(s)
- Wan Lu Pang
- Department of Physiology and Immunology Programme; Yong Loo Lin School of Medicine; National University of Singapore; Singapore
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23
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Nakaima Y, Watanabe K, Koyama T, Miura O, Fukuda T. CD137 is induced by the CD40 signal on chronic lymphocytic leukemia B cells and transduces the survival signal via NF-κB activation. PLoS One 2013; 8:e64425. [PMID: 23696891 PMCID: PMC3655981 DOI: 10.1371/journal.pone.0064425] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2013] [Accepted: 04/14/2013] [Indexed: 02/07/2023] Open
Abstract
CD137 is a member of the tumor necrosis factor receptor family that is expressed on activated T cells. This molecule provides a co-stimulatory signal that enhances the survival, and differentiation of cells, and has a crucial role in the development of CD8 cytotoxic T cells and anti-tumor immunity. Here we report that CD137 expression is also induced on normal or malignant human B cells by CD40 ligation by its ligand CD154. This CD137 induction was more prominent in chronic lymphocytic leukemia (CLL) cells than in other types of B cells. CD137 stimulation on B cells by its ligand induced the nuclear translocation of p52 (a non-canonical NF-κB factor). In agreement with this finding, expression of the survival factor BCL-XL was upregulated. Consequently, the CD137 signal augmented the survival of CD154-stimulated CLL B cells in vitro. This unexpected induction of CD137 on B cells by CD40 signal may influence the clinical course of CLL.
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Affiliation(s)
- Yukana Nakaima
- Department of Hematology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
- Laboratory Molecular Genetics of Hematology, Graduate School of Health Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Ken Watanabe
- Department of Hematology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Takatoshi Koyama
- Laboratory Molecular Genetics of Hematology, Graduate School of Health Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Osamu Miura
- Department of Hematology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Tetsuya Fukuda
- Department of Hematology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
- * E-mail:
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Ho WT, Pang WL, Chong SM, Castella A, Al-Salam S, Tan TE, Moh MC, Koh LK, Gan SU, Cheng CK, Schwarz H. Expression of CD137 on Hodgkin and Reed–Sternberg Cells Inhibits T-cell Activation by Eliminating CD137 Ligand Expression. Cancer Res 2012. [DOI: 10.1158/0008-5472.can-12-3849] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Fisher TS, Kamperschroer C, Oliphant T, Love VA, Lira PD, Doyonnas R, Bergqvist S, Baxi SM, Rohner A, Shen AC, Huang C, Sokolowski SA, Sharp LL. Targeting of 4-1BB by monoclonal antibody PF-05082566 enhances T-cell function and promotes anti-tumor activity. Cancer Immunol Immunother 2012; 61:1721-33. [PMID: 22406983 PMCID: PMC11028822 DOI: 10.1007/s00262-012-1237-1] [Citation(s) in RCA: 120] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2012] [Accepted: 02/22/2012] [Indexed: 12/16/2022]
Abstract
4-1BB (CD137, TNFRSF9) is a costimulatory receptor expressed on several subsets of activated immune cells. Numerous studies of mouse and human T cells indicate that 4-1BB promotes cellular proliferation, survival, and cytokine production. 4-1BB agonist mAbs have demonstrated efficacy in prophylactic and therapeutic settings in both monotherapy and combination therapy tumor models and have established durable anti-tumor protective T-cell memory responses. PF-05082566 is a fully human IgG2 that binds to the extracellular domain of human 4-1BB with high affinity and specificity. In preclinical studies, this agonist antibody demonstrated its ability to activate NF-κB and induce downstream cytokine production, promote leukocyte proliferation, and inhibit tumor growth in a human PBMC xenograft tumor model. The mechanism of action and robust anti-tumor efficacy of PF-05082566 support its clinical development for the treatment of a broad spectrum of human malignancies.
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Affiliation(s)
- Timothy S. Fisher
- Oncology Research Unit, Pfizer Inc., 10724 Science Center Drive, San Diego, CA 92121 USA
| | - Cris Kamperschroer
- Immunotoxicology Center of Emphasis, Drug Safety Research and Development, Pfizer Inc., Groton, CT USA
| | - Theodore Oliphant
- Protein Therapeutics Center of Emphasis, Pfizer Inc., 700 Chesterfield Parkway West, Chesterfield, MO 63017 USA
| | - Victoria A. Love
- Oncology Research Unit, Pfizer Inc., 10724 Science Center Drive, San Diego, CA 92121 USA
| | - Paul D. Lira
- Oncology Research Unit, Pfizer Inc., 10724 Science Center Drive, San Diego, CA 92121 USA
| | - Regis Doyonnas
- Genetically Engineered Models Center of Emphasis, Pfizer Inc., Eastern Point Road, Groton, CT 06340 USA
| | - Simon Bergqvist
- Oncology Research Unit, Pfizer Inc., 10724 Science Center Drive, San Diego, CA 92121 USA
| | - Sangita M. Baxi
- Oncology Research Unit, Pfizer Inc., 10724 Science Center Drive, San Diego, CA 92121 USA
| | - Allison Rohner
- Oncology Research Unit, Pfizer Inc., 10724 Science Center Drive, San Diego, CA 92121 USA
| | - Amy C. Shen
- Biomarkers Flow Cytometry Core Facility, Drug Safety Research and Development, Pfizer Inc., Eastern Point Road, Groton, CT 06340 USA
| | - Chunli Huang
- Biomarkers Flow Cytometry Core Facility, Drug Safety Research and Development, Pfizer Inc., Eastern Point Road, Groton, CT 06340 USA
| | - Sharon A. Sokolowski
- Biomarkers Flow Cytometry Core Facility, Drug Safety Research and Development, Pfizer Inc., Eastern Point Road, Groton, CT 06340 USA
| | - Leslie L. Sharp
- Oncology Research Unit, Pfizer Inc., 10724 Science Center Drive, San Diego, CA 92121 USA
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26
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Admission levels of soluble CD137 are increased in patients with acute pancreatitis and are associated with subsequent complications. Exp Mol Pathol 2011; 92:1-6. [PMID: 21963611 DOI: 10.1016/j.yexmp.2011.09.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2011] [Accepted: 09/13/2011] [Indexed: 12/15/2022]
Abstract
The progression of acute pancreatitis to necrotizing pancreatitis which often results in high morbidity and mortality is difficult to predict. Here we report that serum concentrations of sCD137 are increased in patients with acute pancreatitis. Admission levels and 10-day median sCD137 levels positively correlate with markers of biliary pancreatitis and the 10-day sCD137 median is significantly higher in metabolic than in alcoholic pancreatitis. Serum concentrations of sCD137 at time of admission and the 10-day median of sCD137 correlate with the Ranson and APACHE II disease scores but not with the radiological Balthazar and Schroeder scores that reflect pancreatic and peripancreatic necrosis. Further, sCD137 levels correlate with the probability of complications and lethality. The association of sCD137, a product of activated T cells, with the severity of acute pancreatitis suggests that T cells contribute to the pathogenesis of acute pancreatitis.
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27
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Kim JD, Kim CH, Kwon BS. Regulation of mouse 4-1BB expression: multiple promoter usages and a splice variant. Mol Cells 2011; 31:141-9. [PMID: 21347708 PMCID: PMC3932682 DOI: 10.1007/s10059-011-0018-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2010] [Revised: 09/28/2010] [Accepted: 11/01/2010] [Indexed: 10/18/2022] Open
Abstract
The expression of 4-1BB has been known to be dependent on T cell activation. Recent studies have, however, revealed that 4-1BB expression is not restricted to T cells. We sought to determine the molecular basis for the differential gene expression. Here we report the expression pattern of two mouse 4-1BB transcripts, type I and type II. Whereas the type I transcript was specifically expressed on immune organ as previously reported, the type II transcript was ubiquitously expressed in tissues and various cell lines. However, both type I and type II transcript were highly induced on activated T cells. Primer extension assay of the two 4-1BB transcripts suggested that mouse 4-1BB had more than two transcripts. Using luciferase assay we have identified three promoter regions (PI, PII and PIII), which located on upstream region of second exon 1, first exon 1, and exon 2, respectively. In particular, the type I transcript was preferentially induced when naïve T cells are stimulated by anti-CD3 monoclonal antibody (mAb) since NF-κB specifically binds to the putative NF-κB element of PI. We have also shown that a splice variant, in which the transmembrane domain was deleted, could inhibit 4-1BB signaling. The splicing variant was highly induced by TCR stimulation. Our results reveal 4-1BB also has a negative regulation system through soluble 4-1BB produced from a splice variant induced under activation conditions.
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Affiliation(s)
- Jung D. Kim
- Biomedical Research Center, Ulsan University Hospital, College of Medicine, University of Ulsan, Ulsan 680-749, Korea
| | - Chang H. Kim
- Division of Cell and Immunobiology and R&D Center for Cancer Therapeutics, National Cancer Center, Ilsan 411-769, Korea
| | - Byoung S. Kwon
- Division of Cell and Immunobiology and R&D Center for Cancer Therapeutics, National Cancer Center, Ilsan 411-769, Korea
- Department of medicine, Tulane University, New Orleans LA70112, USA
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Shao Z, Sun F, Koh DR, Schwarz H. Characterisation of soluble murine CD137 and its association with systemic lupus. Mol Immunol 2008; 45:3990-9. [PMID: 18640726 DOI: 10.1016/j.molimm.2008.05.028] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2008] [Revised: 05/21/2008] [Accepted: 05/25/2008] [Indexed: 12/20/2022]
Abstract
CD137 is a member of the tumor necrosis factor receptor family, and is involved in the regulation of activation, proliferation, differentiation and apoptosis of T cells, B cells, monocytes, dendritic cells, natural killer cells and granulocytes. Here report that soluble forms of murine CD137 (sCD137) are generated by differential splicing and are released by activated T cells. Levels of sCD137 correlate with cell activation and the extent of cell death but not with cellular proliferation. While CD8+ T cells express significantly more cell surface CD137 than CD4+ T cells, both T cell subsets express similar levels of sCD137, resulting a twofold increased ratio of soluble to cell surface CD137 for CD4+ T cells. sCD137 exists as a trimer and a higher order multimer, can bind to CD137 ligand, and inhibits secretion of IL-10 and IL-12. sCD137 is present in sera of mice with autoimmune disease but is undetectable in sera of healthy mice.
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Affiliation(s)
- Zhe Shao
- Department of Physiology, and Immunology Programme, Yong Loo Lin School of Medicine, Centre for Life Sciences, National University of Singapore, Singapore 117456, Singapore
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Abstract
CD22 is an important immunotherapeutic target on B-cell malignancies, particularly hairy cell leukemia (HCL), but its soluble extracellular domain, sCD22, has not yet been reported in the blood. By immunoaffinity and enzyme-linked immunosorbent assay techniques using anti-CD22 monoclonal antibodies, we identified the 100-kDa extracellular domain of CD22 and an 80-kDa processed form in serum of patients with HCL. The median sCD22 level measured by enzyme-linked immunosorbent assay was 18 ng/mL for 93 patients with HCL. sCD22 levels varied from 2.1 to 163 ng/mL and were higher (P < .001) than 23 normal donors (median, 0.6 ng/mL). More than 95% of normal donors had sCD22 levels less than 1.9 ng/mL. sCD22 levels were proportional to concentrations of circulating HCL cells (P = .002), and HCL spleen size (P < .001). sCD22 levels normalized with complete but not partial response to treatment. sCD22 levels up to 300 ng/mL had less than a 2-fold effect on the cytotoxicity of the anti-CD22 recombinant immunotoxin BL22. sCD22 levels may be useful to follow in patients with HCL and may be more specific than sCD25 in patients with CD22(+)/CD25(-) disease. Trials are listed on www.cancer.gov as NCT00002765, NCT00021983, NCT00074048, NCT00085085, NCT00337311, and NCT00462189.
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