1
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Wei Y, Li G, Wang Z, Qian K, Zhang S, Zhang L, Lei C, Hu S. Development and characterization of a novel neutralizing scFv vectored immunoprophylaxis against botulinum toxin type A. J Drug Target 2024; 32:213-222. [PMID: 38164940 DOI: 10.1080/1061186x.2023.2301418] [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: 05/17/2023] [Accepted: 10/18/2023] [Indexed: 01/03/2024]
Abstract
Botulinum toxin is a protein toxin secreted by Clostridium botulinum that is strongly neurotoxic. Due to its characteristics of being super toxic, quick acting, and difficult to prevent, the currently reported antiviral studies focusing on monoclonal antibodies have limited effectiveness. Therefore, for the sake of effectively prevention and treatment of botulism and to maintain country biosecurity as well as the health of the population, in this study, we intend to establish a single chain antibody (scFv) targeting the carboxyl terminal binding functional domain of the botulinum neurotoxin heavy chain (BONT/AHc) of botulinum neurotoxin type A, and explore the value of a new passive immune method in antiviral research which based on adeno-associated virus (AAV) mediated vector immunoprophylaxis (VIP) strategy. The scFv small-molecular single-chain antibody sequenced, designed, constructed, expressed and purified by hybridoma has high neutralising activity and affinity level, which can lay a good foundation for the modification and development of antibody engineering drugs. In vivo experiments, AAV-mediated scFv engineering drug has good anti-BONT/A toxin neutralisation ability, has advantages of simple operation, stable expression and good efficacy, and may be one of the effective treatment strategies for long-term prevention and protection of BONT/A botulinum neurotoxin.
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Affiliation(s)
- Yongpeng Wei
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China
- Hepatic Surgery Department V, The Third Affiliated Hospital, Second Military Medical University, Shanghai, China
| | - Guangyao Li
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China
- Department of Biomedical Engineering, College of Basic Medical Sciences, Naval Medical University (Second Military Medical University), Shanghai, China
| | - Zhuo Wang
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China
- Hepatic Surgery Department V, The Third Affiliated Hospital, Second Military Medical University, Shanghai, China
| | - Kewen Qian
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China
- Department of Biomedical Engineering, College of Basic Medical Sciences, Naval Medical University (Second Military Medical University), Shanghai, China
| | - Shuyi Zhang
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China
| | - Lingling Zhang
- Department of Central Laboratory, Clinical Research Center of Changhai Hospital, Shanghai, China
| | - Changhai Lei
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China
| | - Shi Hu
- Department of Biomedical Engineering, College of Basic Medical Sciences, Naval Medical University (Second Military Medical University), Shanghai, China
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2
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Albadari N, Xie Y, Li W. Deciphering treatment resistance in metastatic colorectal cancer: roles of drug transports, EGFR mutations, and HGF/c-MET signaling. Front Pharmacol 2024; 14:1340401. [PMID: 38269272 PMCID: PMC10806212 DOI: 10.3389/fphar.2023.1340401] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 12/27/2023] [Indexed: 01/26/2024] Open
Abstract
In 2023, colorectal cancer (CRC) is the third most diagnosed malignancy and the third leading cause of cancer death worldwide. At the time of the initial visit, 20% of patients diagnosed with CRC have metastatic CRC (mCRC), and another 25% who present with localized disease will later develop metastases. Despite the improvement in response rates with various modulation strategies such as chemotherapy combined with targeted therapy, radiotherapy, and immunotherapy, the prognosis of mCRC is poor, with a 5-year survival rate of 14%, and the primary reason for treatment failure is believed to be the development of resistance to therapies. Herein, we provide an overview of the main mechanisms of resistance in mCRC and specifically highlight the role of drug transports, EGFR, and HGF/c-MET signaling pathway in mediating mCRC resistance, as well as discuss recent therapeutic approaches to reverse resistance caused by drug transports and resistance to anti-EGFR blockade caused by mutations in EGFR and alteration in HGF/c-MET signaling pathway.
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Affiliation(s)
| | | | - Wei Li
- College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN, United States
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3
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Yuan Y, Sun X, Liu M, Li S, Dong Y, Hu K, Zhang J, Xu B, Ma S, Jiang H, Hou P, Lin Y, Gan L, Liu T. Negative correlation between acetyl-CoA acyltransferase 2 and cetuximab resistance in colorectal cancer. Acta Biochim Biophys Sin (Shanghai) 2023; 55:1467-1478. [PMID: 37310146 PMCID: PMC10520478 DOI: 10.3724/abbs.2023111] [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: 02/18/2023] [Accepted: 03/30/2023] [Indexed: 06/14/2023] Open
Abstract
The emergence of anti-EGFR therapy has revolutionized the treatment of colorectal cancer (CRC). However, not all patients respond consistently well. Therefore, it is imperative to conduct further research to identify the molecular mechanisms underlying the development of cetuximab resistance in CRC. In this study, we find that the expressions of many metabolism-related genes are downregulated in cetuximab-resistant CRC cells compared to their sensitive counterparts. Specifically, acetyl-CoA acyltransferase 2 (ACAA2), a key enzyme in fatty acid metabolism, is downregulated during the development of cetuximab resistance. Silencing of ACAA2 promotes proliferation and increases cetuximab tolerance in CRC cells, while overexpression of ACAA2 exerts the opposite effect. RTK-Kras signaling might contribute to the downregulation of ACAA2 expression in CRC, and ACAA2 predicts CRC prognosis in patients with Kras mutations. Collectively, our data suggest that modulating ACAA2 expression contributes to secondary cetuximab resistance in Kras wild-type CRC patients. ACAA2 expression is related to Kras mutation and demonstrates a prognostic role in CRC patients with Kras mutation. Thus, ACAA2 is a potential target in CRC with Kras mutation.
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Affiliation(s)
- Yitao Yuan
- Department of Medical OncologyZhongshan HospitalFudan UniversityShanghai200032China
| | - Xun Sun
- Department of Medical OncologyZhongshan HospitalFudan UniversityShanghai200032China
| | - Mengling Liu
- Department of Medical OncologyZhongshan HospitalFudan UniversityShanghai200032China
| | - Suyao Li
- Department of Medical OncologyZhongshan HospitalFudan UniversityShanghai200032China
| | - Yu Dong
- Department of Medical OncologyZhongshan HospitalFudan UniversityShanghai200032China
| | - Keshu Hu
- Department of Medical OncologyZhongshan HospitalFudan UniversityShanghai200032China
| | - Jiayu Zhang
- Department of Medical OncologyZhongshan HospitalFudan UniversityShanghai200032China
| | - Bei Xu
- Department of Medical OncologyZhongshan HospitalFudan UniversityShanghai200032China
| | - Sining Ma
- Department of Obstetrics and GynecologyZhongshan HospitalShanghai200032China
| | - Hesheng Jiang
- Department of SurgerySouthwest HealthcareSouthern California Medical Education ConsortiumTemecula Valley HospitalTemeculaUSA
| | - Pengcong Hou
- Department of Medical OncologyZhongshan HospitalFudan UniversityShanghai200032China
- Shanghai Institute of Precision MedicineShanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai200032China
| | - Yufu Lin
- Department of OncologyZhongshan Hospital (Xiamen)Fudan UniversityXiamen361004China
| | - Lu Gan
- Department of Medical OncologyZhongshan HospitalFudan UniversityShanghai200032China
- Fudan Zhangjiang InstituteShanghai200032China
| | - Tianshu Liu
- Department of Medical OncologyZhongshan HospitalFudan UniversityShanghai200032China
- Center of Evidence Based MedicineFudan UniversityShanghai200032China
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4
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Iida M, McDaniel NK, Kostecki KL, Welke NB, Kranjac CA, Liu P, Longhurst C, Bruce JY, Hong S, Salgia R, Wheeler DL. AXL regulates neuregulin1 expression leading to cetuximab resistance in head and neck cancer. BMC Cancer 2022; 22:447. [PMID: 35461210 PMCID: PMC9035247 DOI: 10.1186/s12885-022-09511-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 04/07/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND The receptor tyrosine kinase (RTK) epidermal growth factor receptor (EGFR) is overexpressed and an important therapeutic target in Head and Neck cancer (HNC). Cetuximab is currently the only EGFR-targeting agent approved by the FDA for treatment of HNC; however, intrinsic and acquired resistance to cetuximab is a major problem in the clinic. Our lab previously reported that AXL leads to cetuximab resistance via activation of HER3. In this study, we investigate the connection between AXL, HER3, and neuregulin1 (NRG1) gene expression with a focus on understanding how their interdependent signaling promotes resistance to cetuximab in HNC. METHODS Plasmid or siRNA transfections and cell-based assays were conducted to test cetuximab sensitivity. Quantitative PCR and immunoblot analysis were used to analyze gene and protein expression levels. Seven HNC patient-derived xenografts (PDXs) were evaluated for protein expression levels. RESULTS We found that HER3 expression was necessary but not sufficient for cetuximab resistance without AXL expression. Our results demonstrated that addition of the HER3 ligand NRG1 to cetuximab-sensitive HNC cells leads to cetuximab resistance. Further, AXL-overexpressing cells regulate NRG1 at the level of transcription, thereby promoting cetuximab resistance. Immunoblot analysis revealed that NRG1 expression was relatively high in cetuximab-resistant HNC PDXs compared to cetuximab-sensitive HNC PDXs. Finally, genetic inhibition of NRG1 resensitized AXL-overexpressing cells to cetuximab. CONCLUSIONS The results of this study indicate that AXL may signal through HER3 via NRG1 to promote cetuximab resistance and that targeting of NRG1 could have significant clinical implications for HNC therapeutic approaches.
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Affiliation(s)
- Mari Iida
- Department of Human Oncology, School of Medicine and Public Health, University of Wisconsin, 1111 highland Ave, WIMR 3159, Madison, WI, 53705, USA
| | - Nellie K McDaniel
- Department of Human Oncology, School of Medicine and Public Health, University of Wisconsin, 1111 highland Ave, WIMR 3159, Madison, WI, 53705, USA
| | - Kourtney L Kostecki
- Department of Human Oncology, School of Medicine and Public Health, University of Wisconsin, 1111 highland Ave, WIMR 3159, Madison, WI, 53705, USA
| | - Noah B Welke
- Department of Human Oncology, School of Medicine and Public Health, University of Wisconsin, 1111 highland Ave, WIMR 3159, Madison, WI, 53705, USA
| | - Carlene A Kranjac
- Department of Human Oncology, School of Medicine and Public Health, University of Wisconsin, 1111 highland Ave, WIMR 3159, Madison, WI, 53705, USA
| | - Peng Liu
- School of Medicine and Public Health, University of Wisconsin Carbone Cancer Center, University of Wisconsin, Madison, WI, USA
- Department of Biostatistics and Medical Informatics, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA
| | - Colin Longhurst
- Department of Biostatistics and Medical Informatics, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA
| | - Justine Y Bruce
- School of Medicine and Public Health, University of Wisconsin Carbone Cancer Center, University of Wisconsin, Madison, WI, USA
- Department of Medicine, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA
| | - Seungpyo Hong
- Pharmaceutical Sciences Division, University of Wisconsin School of Pharmacy, Madison, WI, USA
- Wisconsin Center for NanoBioSystems, University of Wisconsin, Madison, WI, USA
- Yonsei Frontier Lab, Department of Pharmacy, Yonsei University, Seoul, Korea
| | - Ravi Salgia
- Department of Medical Oncology and Experimental Therapeutics, Comprehensive Cancer Center, City of Hope, Duarte, CA, USA
| | - Deric L Wheeler
- Department of Human Oncology, School of Medicine and Public Health, University of Wisconsin, 1111 highland Ave, WIMR 3159, Madison, WI, 53705, USA.
- School of Medicine and Public Health, University of Wisconsin Carbone Cancer Center, University of Wisconsin, Madison, WI, USA.
- Wisconsin Center for NanoBioSystems, University of Wisconsin, Madison, WI, USA.
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5
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Xu Z, Qiu C, Wen B, Wang S, Zhu L, Zhao L, Li H. A bispecific nanobody targeting the dimerization interface of epidermal growth factor receptor: Evidence for tumor suppressive actions in vitro and in vivo. Biochem Biophys Res Commun 2021; 548:78-83. [PMID: 33636638 DOI: 10.1016/j.bbrc.2021.02.059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 02/14/2021] [Indexed: 12/30/2022]
Abstract
Targeting the dimer interface for the epidermal growth factor receptor (EGFR) that is highly conserved in the structure and directly involved in dimerization may solve the resistance problem that plagues anti-EGFR therapy. Heavy chain single domain antibodies have promising prospects as therapeutic antibodies. A bispecific nanobody was constructed based on previously screened humanized nanobodies that target the β-loop at the EGFR dimer interface, an anti-FcγRIIIa (CD16) of natural killer cells (NK) nanobodies and anti-human serum albumin (HSA) nanobodies. The target gene was effectively expressed and secreted while controlled by promoter GAP in Pichia pastoris X33, and the expressed product was purified with a cation exchange and nickel chelation chromatography. The bispecific nanobody specifically bound to the surfaces of EGFR-overexpressed human epidermal carcinoma A431 cells and effectively inhibited tumor cell growth both in vitro and in vivo. In the A431 cell nude mouse xenograft model, the growth inhibition effect from the bispecific nanobody was significantly increased with the assistance of peripheral blood mononuclear cells (PBMCs), which was consistent with the results obtained in vitro, suggesting that there was an antibody-dependent cell-mediated cytotoxicity (ADCC) effect. In addition, the intraperitoneal administration of bispecific nanobodies effectively reached tumor tissues in the shoulder dorsal region, but in significantly less distributed quantities than EGFR Dimer Nb77. To conclude, a bispecific nanobody targeting the EGFR dimer interface with ADCC effect was successfully constructed.
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Affiliation(s)
- Zhimin Xu
- Guangdong Provincial Key Laboratory for Biotechnology Candidate Drug Research, School of Biosciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Chuangnan Qiu
- Guangdong Provincial Key Laboratory for Biotechnology Candidate Drug Research, School of Biosciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Biyan Wen
- Guangdong Provincial Key Laboratory for Biotechnology Candidate Drug Research, School of Biosciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Shuang Wang
- Guangdong Provincial Key Laboratory for Biotechnology Candidate Drug Research, School of Biosciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Linfeng Zhu
- Guangdong Provincial Key Laboratory for Biotechnology Candidate Drug Research, School of Biosciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Lin Zhao
- Guangdong Provincial Key Laboratory for Biotechnology Candidate Drug Research, School of Biosciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Huangjin Li
- Guangdong Provincial Key Laboratory for Biotechnology Candidate Drug Research, School of Biosciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, 510006, China.
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6
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von Itzstein MS, Burke MC, Brekken RA, Aguilera TA, Zeh HJ, Beg MS. Targeting TAM to Tame Pancreatic Cancer. Target Oncol 2020; 15:579-588. [PMID: 32996059 DOI: 10.1007/s11523-020-00751-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Pancreatic cancer is expected to become the second leading cause of cancer-related death within the next few years. Current therapeutic strategies have limited effectiveness and therefore there is an urgency to develop novel effective therapies. The receptor tyrosine kinase subfamily TAM (Tyro3, Axl, MerTK) is directly implicated in the pathogenesis of the metastatic, chemoresistant, and immunosuppressive phenotype in pancreatic cancer. TAM inhibitors are promising investigational therapies for pancreatic cancer due to their potential to target multiple aspects of pancreatic cancer biology. Specifically, recent mechanistic investigations and therapeutic combinations in the preclinical setting suggest that TAM inhibition with chemotherapy, targeted therapy, and immunotherapy should be evaluated clinically.
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Affiliation(s)
- Mitchell S von Itzstein
- Division of Hematology/Oncology, Department of Internal Medicine, UT Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX, 75390-8852, USA
- Division of Hematology and Medical Oncology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Michael C Burke
- Division of Hematology/Oncology, Department of Internal Medicine, UT Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX, 75390-8852, USA
- Division of Hematology and Medical Oncology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Rolf A Brekken
- Division of Surgical Oncology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Todd A Aguilera
- Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Herbert J Zeh
- Division of Surgical Oncology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Muhammad Shaalan Beg
- Division of Hematology/Oncology, Department of Internal Medicine, UT Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX, 75390-8852, USA.
- Division of Hematology and Medical Oncology, University of Texas Southwestern Medical Center, Dallas, TX, USA.
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7
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McDaniel NK, Iida M, Nickel KP, Longhurst CA, Fischbach SR, Rodems TS, Kranjac CA, Bo AY, Luo Q, Gallagher MM, Welke NB, Mitchell KR, Schulz AE, Eckers JC, Hu R, Salgia R, Hong S, Bruce JY, Kimple RJ, Wheeler DL. AXL Mediates Cetuximab and Radiation Resistance Through Tyrosine 821 and the c-ABL Kinase Pathway in Head and Neck Cancer. Clin Cancer Res 2020; 26:4349-4359. [PMID: 32439698 PMCID: PMC7442604 DOI: 10.1158/1078-0432.ccr-19-3142] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 03/27/2020] [Accepted: 05/15/2020] [Indexed: 12/16/2022]
Abstract
PURPOSE Radiation and cetuximab are therapeutics used in management of head and neck squamous cell carcinoma (HNSCC). Despite clinical success with these modalities, development of both intrinsic and acquired resistance is an emerging problem in the management of this disease. The purpose of this study was to investigate signaling of the receptor tyrosine kinase AXL in resistance to radiation and cetuximab treatment. EXPERIMENTAL DESIGN To study AXL signaling in the context of treatment-resistant HNSCC, we used patient-derived xenografts (PDXs) implanted into mice and evaluated the tumor response to AXL inhibition in combination with cetuximab or radiation treatment. To identify molecular mechanisms of how AXL signaling leads to resistance, three tyrosine residues of AXL (Y779, Y821, Y866) were mutated and examined for their sensitivity to cetuximab and/or radiation. Furthermore, reverse phase protein array (RPPA) was employed to analyze the proteomic architecture of signaling pathways in these genetically altered cell lines. RESULTS Treatment of cetuximab- and radiation-resistant PDXs with AXL inhibitor R428 was sufficient to overcome resistance. RPPA analysis revealed that such resistance emanates from signaling of tyrosine 821 of AXL via the tyrosine kinase c-ABL. In addition, inhibition of c-ABL signaling resensitized cells and tumors to cetuximab or radiotherapy even leading to complete tumor regression without recurrence in head and neck cancer models. CONCLUSIONS Collectively, the studies presented herein suggest that tyrosine 821 of AXL mediates resistance to cetuximab by activation of c-ABL kinase in HNSCC and that targeting of both EGFR and c-ABL leads to a robust antitumor response.
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Affiliation(s)
- Nellie K McDaniel
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Mari Iida
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Kwangok P Nickel
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Colin A Longhurst
- Department of Biostatistics and Medical Informatics, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Samantha R Fischbach
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Tamara S Rodems
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Carlene A Kranjac
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Amber Y Bo
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Qianyun Luo
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Meghan M Gallagher
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Noah B Welke
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Kaitlyn R Mitchell
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Alison E Schulz
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Jaimee C Eckers
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Rong Hu
- Department of Pathology and Laboratory Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Ravi Salgia
- Department of Medical Oncology and Experimental Therapeutics, Comprehensive Cancer Center, City of Hope, Duarte, California
| | - Seungpyo Hong
- Pharmaceutical Sciences Division, University of Wisconsin School of Pharmacy, Madison, Wisconsin
- Yonsei Frontier Lab and Department of Pharmacy, Yonsei University, Seoul, Korea
| | - Justine Y Bruce
- Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
- University of Wisconsin Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Randall J Kimple
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin.
- University of Wisconsin Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Deric L Wheeler
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin.
- University of Wisconsin Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
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8
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Li J, Wang L, Tian J, Zhou Z, Li J, Yang H. Nongenetic engineering strategies for regulating receptor oligomerization in living cells. Chem Soc Rev 2020; 49:1545-1568. [DOI: 10.1039/c9cs00473d] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Nongenetic strategies for regulating receptor oligomerization in living cells based on DNA, protein, small molecules and physical stimuli.
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Affiliation(s)
- Jingying Li
- MOE Key Laboratory for Analytical Science of Food Safety and Biology
- Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
| | - Liping Wang
- MOE Key Laboratory for Analytical Science of Food Safety and Biology
- Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
| | - Jinmiao Tian
- Institute of Molecular Medicine
- Renji Hospital
- School of Medicine
- Shanghai Jiao Tong University
- Shanghai
| | - Zhilan Zhou
- Institute of Molecular Medicine
- Renji Hospital
- School of Medicine
- Shanghai Jiao Tong University
- Shanghai
| | - Juan Li
- MOE Key Laboratory for Analytical Science of Food Safety and Biology
- Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
| | - Huanghao Yang
- MOE Key Laboratory for Analytical Science of Food Safety and Biology
- Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
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9
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Knockout of glucosidase II beta subunit inhibits growth and metastatic potential of lung cancer cells by inhibiting receptor tyrosine kinase activities. Sci Rep 2019; 9:10394. [PMID: 31316108 PMCID: PMC6637200 DOI: 10.1038/s41598-019-46701-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Accepted: 07/03/2019] [Indexed: 12/11/2022] Open
Abstract
Glucosidase II (GluII) plays a major role in regulating post-translation modification of N-linked glycoproteins. We have previously reported that the expression of glucosidase II beta subunit (GluIIβ) was significantly increased in lung tumor tissues and its suppression triggers autophagy and/or apoptosis. Here, we investigated the role of GluIIβ in cell growth, metastatic potential, and receptor tyrosine kinases (RTKs) signaling activity in lung carcinoma cell lines. CRISPR-CAS9 technology was used to knockout the GluIIβ encoding gene (PRKSH) in lung carcinoma cells. GluIIβ knockout cells exhibited drastically slower growth rates in comparison to non-target transfected cells, particularly with lower concentrations of fetal bovine serum, indicating impairment of their ability to survive under nutritional deprivation. Cell migration and anchorage-independent growth, the fundamental components of cancer cell metastasis, were significantly decreased in GluIIβ knockout cells. Knockout of GluIIβ increased the sensitivity of lung cancer cells to cisplatin but reduced their sensitivity to gefitinib. Interestingly, knocking out of GluIIβ lowered overall RTK signaling activities to less than half of those in non-target transfected cells, which could represent a novel strategy for blocking multiple RTKs in tumor cells in an effort to improve lung cancer treatment.
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10
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Li T, Shen Y, Lin F, Fu W, Liu S, Wang C, Liang J, Fan X, Ye X, Tang Y, Ding M, Yang Y, Lei C, Hu S. Targeting RyR2 with a phosphorylation site-specific nanobody reverses dysfunction of failing cardiomyocytes in rats. FASEB J 2019; 33:7467-7478. [PMID: 30885011 DOI: 10.1096/fj.201802354r] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Chronic PKA phosphorylation of ryanodine receptor 2 (RyR2) has been shown to increase diastolic sarcoplasmic reticulum (SR) Ca2+ leakage and lead to cardiac dysfunction. We hypothesize that intracellular gene delivery of an RyR2-targeting phosphorylation site-specific nanobody could preserve the contractility of the failing myocardium. In the present study, we acquired RyR2-specific nanobodies from a phage display library that were variable domains of Camelidae heavy chain-only antibodies. One of the nanobodies, AR185, inhibited RyR2 phosphorylation in vitro and was chosen for further investigation. We investigated the potential of adeno-associated virus (AAV)9-mediated cardiac expression of AR185 to combat postischemic heart failure (HF). AAV gene delivery elevated the intracellular expression of the AR185 protein in a rat model of ischemic HF, and this treatment normalized the systolic and diastolic dysfunction of the failing myocardium in vivo by reversing myocardial Ca2+ handling. Furthermore, AR185 gene transfer to failing cardiomyocytes reduced the frequency of SR calcium leaks, thereby restoring the attenuated intracellular calcium transients and SR calcium load. Moreover, AR185 gene transfer inhibited the PKA-mediated phosphorylation of RyR2 in failing cardiomyocytes. Our results provide preclinical experimental evidence that the cardiac expression of RyR2 nanobodies with AAV9 vectors is a promising therapeutic strategy for HF.-Li, T., Shen, Y., Lin, F., Fu, W., Liu, S., Wang, C., Liang, J., Fan, X., Ye, X., Tang, Y., Ding, M., Yang, Y., Lei, C., Hu, S. Targeting RyR2 with a phosphorylation site-specific nanobody reverses dysfunction of failing cardiomyocytes in rats.
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Affiliation(s)
- Tian Li
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China.,Department of Biophysics, Team SMMU-China of International Genetically Engineered Machine (iGEM) Competitions, Second Military Medical University, Shanghai, China
| | - Yafeng Shen
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China
| | - Fangxing Lin
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China
| | - Wenyan Fu
- Department of Obstetrics and Gynecology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Shuowu Liu
- Department of Biophysics, Team SMMU-China of International Genetically Engineered Machine (iGEM) Competitions, Second Military Medical University, Shanghai, China
| | - Chuqi Wang
- Department of Biophysics, Team SMMU-China of International Genetically Engineered Machine (iGEM) Competitions, Second Military Medical University, Shanghai, China
| | - Jizhou Liang
- Department of Biophysics, Team SMMU-China of International Genetically Engineered Machine (iGEM) Competitions, Second Military Medical University, Shanghai, China
| | - Xiaoyan Fan
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China
| | - Xuting Ye
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China
| | - Ying Tang
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China
| | - Min Ding
- Pharchoice Therapeutics Incorporated, Shanghai, China
| | - Yongji Yang
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China
| | - Changhai Lei
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China.,Department of Biophysics, Team SMMU-China of International Genetically Engineered Machine (iGEM) Competitions, Second Military Medical University, Shanghai, China
| | - Shi Hu
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China.,Department of Biophysics, Team SMMU-China of International Genetically Engineered Machine (iGEM) Competitions, Second Military Medical University, Shanghai, China
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11
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Fu W, Lei C, Yu Y, Liu S, Li T, Lin F, Fan X, Shen Y, Ding M, Tang Y, Ye X, Yang Y, Hu S. EGFR/Notch Antagonists Enhance the Response to Inhibitors of the PI3K-Akt Pathway by Decreasing Tumor-Initiating Cell Frequency. Clin Cancer Res 2019; 25:2835-2847. [PMID: 30670492 DOI: 10.1158/1078-0432.ccr-18-2732] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 10/11/2018] [Accepted: 01/16/2019] [Indexed: 11/16/2022]
Abstract
PURPOSE Both EGFR and PI3K-Akt signaling pathways have been used as therapeutically actionable targets, but resistance is frequently reported. In this report, we show that enrichment of the cancer stem cell (CSC) subsets and dysregulation of Notch signaling underlie the challenges to therapy and describe the development of bispecific antibodies targeting both HER and Notch signaling. EXPERIMENTAL DESIGN We utilized cell-based models to study Notch signaling in drug-induced CSC expansion. Both cancer cell line models and patient-derived xenograft tumors were used to evaluate the antitumor effects of bispecific antibodies. Cell assays, flow cytometry, qPCR, and in vivo serial transplantation assays were employed to investigate the mechanisms of action and pharmacodynamic readouts. RESULTS We found that EGFR/Notch targeting bispecific antibodies exhibited a notable antistem cell effect in both in vitro and in vivo assays. Bispecific antibodies delayed the occurrence of acquired resistance to EGFR inhibitors in triple-negative breast cancer cell line-based models and showed efficacy in patient-derived xenografts. Moreover, the EGFR/Notch bispecific antibody PTG12 in combination with GDC-0941 exerted a stronger antitumor effect than the combined therapy of PI3K inhibitor with EGFR inhibitors or tarextumab in a broad spectrum of epithelial tumors. Mechanistically, bispecific antibody treatment inhibits the stem cell-like subpopulation, reduces tumor-initiating cell frequency, and downregulates the mesenchymal gene expression. CONCLUSIONS These findings suggest that the coblockade of EGFR and Notch signaling has the potential to increase the response to PI3K inhibition, and PTG12 may gain clinical efficacy when combined with PI3K blockage in cancer treatment.
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Affiliation(s)
- Wenyan Fu
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China.,Department of Obstetrics and Gynecology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Changhai Lei
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China.,Team SMMU-China of International Genetically Engineered Machine (iGEM) Competitions, Department of Biophysics, Second Military Medical University, Shanghai, China
| | - Yue Yu
- Department of Thyroid and Breast Surgery, First Affiliated Hospital, Second Military Medical University, Shanghai, China
| | - Shuowu Liu
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China.,Team SMMU-China of International Genetically Engineered Machine (iGEM) Competitions, Department of Biophysics, Second Military Medical University, Shanghai, China
| | - Tian Li
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China.,Team SMMU-China of International Genetically Engineered Machine (iGEM) Competitions, Department of Biophysics, Second Military Medical University, Shanghai, China
| | - Fangxing Lin
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China
| | - Xiaoyan Fan
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China
| | - Yafeng Shen
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China
| | - Min Ding
- Pharchoice Therapeutics Inc., Shanghai, China
| | - Ying Tang
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China
| | - Xuting Ye
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China
| | - Yongji Yang
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China
| | - Shi Hu
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China. .,Team SMMU-China of International Genetically Engineered Machine (iGEM) Competitions, Department of Biophysics, Second Military Medical University, Shanghai, China
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12
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Kim M, Baek M, Kim DJ. Protein Tyrosine Signaling and its Potential Therapeutic Implications in Carcinogenesis. Curr Pharm Des 2018. [PMID: 28625132 DOI: 10.2174/1381612823666170616082125] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Protein tyrosine phosphorylation is a crucial signaling mechanism that plays a role in epithelial carcinogenesis. Protein tyrosine kinases (PTKs) control various cellular processes including growth, differentiation, metabolism, and motility by activating major signaling pathways including STAT3, AKT, and MAPK. Genetic mutation of PTKs and/or prolonged activation of PTKs and their downstream pathways can lead to the development of epithelial cancer. Therefore, PTKs became an attractive target for cancer prevention. PTK inhibitors are continuously being developed, and they are currently used for the treatment of cancers that show a high expression of PTKs. Protein tyrosine phosphatases (PTPs), the homeostatic counterpart of PTKs, negatively regulate the rate and duration of phosphotyrosine signaling. PTPs initially were considered to be only housekeeping enzymes with low specificity. However, recent studies have demonstrated that PTPs can function as either tumor suppressors or tumor promoters, depending on their target substrates. Together, both PTK and PTP signal transduction pathways are potential therapeutic targets for cancer prevention and treatment.
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Affiliation(s)
- Mihwa Kim
- Department of Biomedical Sciences, School of Medicine, University of Texas Rio Grande Valley, Edinburg, TX, USA
| | - Minwoo Baek
- Department of Biomedical Sciences, School of Medicine, University of Texas Rio Grande Valley, Edinburg, TX, USA
| | - Dae Joon Kim
- Department of Biomedical Sciences, School of Medicine, University of Texas Rio Grande Valley, Edinburg, TX, USA
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13
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Fu W, Sun H, Zhao Y, Chen M, Yang L, Yang X, Jin W. Targeted delivery of CD44s-siRNA by ScFv overcomes de novo resistance to cetuximab in triple negative breast cancer. Mol Immunol 2018; 99:124-133. [DOI: 10.1016/j.molimm.2018.05.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 04/28/2018] [Accepted: 05/10/2018] [Indexed: 01/02/2023]
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14
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Leonard B, Brand TM, O'Keefe RA, Lee ED, Zeng Y, Kemmer JD, Li H, Grandis JR, Bhola NE. BET Inhibition Overcomes Receptor Tyrosine Kinase-Mediated Cetuximab Resistance in HNSCC. Cancer Res 2018; 78:4331-4343. [PMID: 29792310 DOI: 10.1158/0008-5472.can-18-0459] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 04/21/2018] [Accepted: 05/18/2018] [Indexed: 01/22/2023]
Abstract
Cetuximab, the FDA-approved anti-EGFR antibody for head and neck squamous cell carcinoma (HNSCC), has displayed limited efficacy due to the emergence of intrinsic and acquired resistance. We and others have demonstrated that cetuximab resistance in HNSCC is driven by alternative receptor tyrosine kinases (RTK), including HER3, MET, and AXL. In an effort to overcome cetuximab resistance and circumvent toxicities associated with the administration of multiple RTK inhibitors, we sought to identify a common molecular target that regulates expression of multiple RTK. Bromodomain-containing protein-4 (BRD4) has been shown to regulate the transcription of various RTK in the context of resistance to PI3K and HER2 inhibition in breast cancer models. We hypothesized that, in HNSCC, targeting BRD4 could overcome cetuximab resistance by depleting alternative RTK expression. We generated independent models of cetuximab resistance in HNSCC cell lines and interrogated their RTK and BRD4 expression profiles. Cetuximab-resistant clones displayed increased expression and activation of several RTK, such as MET and AXL, as well as an increased percentage of BRD4-expressing cells. Both genetic and pharmacologic inhibition of BRD4 abrogated cell viability in models of acquired and intrinsic cetuximab resistance and was associated with a robust decrease in alternative RTK expression by cetuximab. Combined treatment with cetuximab and bromodomain inhibitor JQ1 significantly delayed acquired resistance and RTK upregulation in patient-derived xenograft models of HNSCC. These findings indicate that the combination of cetuximab and bromodomain inhibition may be a promising therapeutic strategy for patients with HNSCC.Significance: Inhibition of bromodomain protein BRD4 represents a potential therapeutic strategy to circumvent the toxicities and financial burden of targeting the multiple receptor tyrosine kinases that drive cetuximab resistance in HNSCC and NSCLC.Graphical Abstract: http://cancerres.aacrjournals.org/content/canres/78/15/4331/F1.large.jpg Cancer Res; 78(15); 4331-43. ©2018 AACR.
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Affiliation(s)
- Brandon Leonard
- Department of Otolaryngology and Head and Neck Surgery, University of California San Francisco, San Francisco, California
| | - Toni M Brand
- Department of Otolaryngology and Head and Neck Surgery, University of California San Francisco, San Francisco, California
| | - Rachel A O'Keefe
- Department of Otolaryngology and Head and Neck Surgery, University of California San Francisco, San Francisco, California
| | - Eliot D Lee
- Department of Otolaryngology and Head and Neck Surgery, University of California San Francisco, San Francisco, California
| | - Yan Zeng
- Department of Otolaryngology and Head and Neck Surgery, University of California San Francisco, San Francisco, California
| | - Jacquelyn D Kemmer
- Department of Otolaryngology and Head and Neck Surgery, University of California San Francisco, San Francisco, California
| | - Hua Li
- Department of Otolaryngology and Head and Neck Surgery, University of California San Francisco, San Francisco, California
| | - Jennifer R Grandis
- Department of Otolaryngology and Head and Neck Surgery, University of California San Francisco, San Francisco, California
| | - Neil E Bhola
- Department of Otolaryngology and Head and Neck Surgery, University of California San Francisco, San Francisco, California.
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15
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Li T, Shen Y, Su L, Fan X, Lin F, Ye X, Ding D, Tang Y, Yang Y, Lei C, Hu S. Cardiac adenovirus-associated viral Presenilin 1 gene delivery protects the left ventricular function of the heart via regulating RyR2 function in post-ischaemic heart failure. J Drug Target 2018. [PMID: 29521549 DOI: 10.1080/1061186x.2018.1450412] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Post-ischaemic heart failure is a major cause of death worldwide. Reperfusion of infarcted heart tissue after myocardial infarction has been an important medical intervention to improve outcomes. However, disturbances in Ca2+ and redox homeostasis at the cellular level caused by ischaemia/reperfusion remain major clinical challenges. In this study, we investigated the potential of adeno-associated virus (AAV)-9-mediated cardiac expression of a Type-2 ryanodine receptor (RyR2) degradation-associated gene, Presenilin 1 (PSEN1), to combat post-ischaemic heart failure. Adeno-associated viral PSEN1 gene delivery elevated PSEN1 protein expression in a post-infarction rat heart failure model, and this administration normalised the contractile dysfunction of the failing myocardium in vivo and in vitro by reversing myocardial Ca2+ handling and function. Moreover, PSEN1 gene transfer to failing cardiomyocytes reduced sarcoplasmic reticulum (SR) Ca2+ leak, thereby restoring the diminished intracellular Ca2+ transients and SR Ca2+ load. Moreover, PSEN1 gene transfer reversed the phosphorylation of RyR2 in failing cardiomyocytes. However, selective autophagy inhibition did not prevent the PSEN1-induced blockade of RyR2 degradation, making the participation of autophagy in PSEN1-associated RyR2 degradation unlikely. Our results established a role of the cardiac expression of PSEN1 with AAV9 vectors as a promising therapeutic approach for post-ischaemic heart failure.
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Affiliation(s)
- Tian Li
- a Department of Biophysics, College of Basic Medical Sciences , Second Military Medical University , Shanghai , China
| | - Yafeng Shen
- a Department of Biophysics, College of Basic Medical Sciences , Second Military Medical University , Shanghai , China
| | - Li Su
- b School of Pharmacy , Second Military Medical University , Shanghai , China
| | - Xiaoyan Fan
- a Department of Biophysics, College of Basic Medical Sciences , Second Military Medical University , Shanghai , China
| | - Fangxing Lin
- a Department of Biophysics, College of Basic Medical Sciences , Second Military Medical University , Shanghai , China
| | - Xuting Ye
- a Department of Biophysics, College of Basic Medical Sciences , Second Military Medical University , Shanghai , China
| | - Dianer Ding
- c Pharchoice Therapeutics Inc , Shanghai , China
| | - Ying Tang
- a Department of Biophysics, College of Basic Medical Sciences , Second Military Medical University , Shanghai , China
| | - Yongji Yang
- a Department of Biophysics, College of Basic Medical Sciences , Second Military Medical University , Shanghai , China
| | - Changhai Lei
- a Department of Biophysics, College of Basic Medical Sciences , Second Military Medical University , Shanghai , China
| | - Shi Hu
- a Department of Biophysics, College of Basic Medical Sciences , Second Military Medical University , Shanghai , China
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16
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Chen L, Zhu Z, Gao W, Jiang Q, Yu J, Fu C. Systemic analysis of different colorectal cancer cell lines and TCGA datasets identified IGF-1R/EGFR-PPAR-CASPASE axis as important indicator for radiotherapy sensitivity. Gene 2017; 627:484-490. [DOI: 10.1016/j.gene.2017.07.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 05/28/2017] [Accepted: 07/02/2017] [Indexed: 01/15/2023]
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17
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Monoclonal Antibodies against Plasmodium falciparum Circumsporozoite Protein. Antibodies (Basel) 2017; 6:antib6030011. [PMID: 31548526 PMCID: PMC6698827 DOI: 10.3390/antib6030011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 06/14/2017] [Accepted: 08/01/2017] [Indexed: 11/17/2022] Open
Abstract
Malaria is a mosquito-borne infectious disease caused by the parasite Plasmodium spp. Malaria continues to have a devastating impact on human health. Sporozoites are the infective forms of the parasite inside mosquito salivary glands. Circumsporozoite protein (CSP) is a major and immunodominant protective antigen on the surface of Plasmodium sporozoites. Here, we report a generation of specific monoclonal antibodies that recognize the central repeat and C-terminal regions of P. falciparum CSP. The monoclonal antibodies 3C1, 3C2, and 3D3-specific for the central repeat region-have higher titers and protective efficacies against challenge with sporozoites compared with 2A10, a gold standard monoclonal antibody that was generated in early 1980s.
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18
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Hu S. Co-targeting cancer stem-like cells and bulk cancer cells with a bispecific antibody. Mol Cell Oncol 2017; 4:e1308851. [PMID: 28616585 DOI: 10.1080/23723556.2017.1308851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 03/16/2017] [Accepted: 03/16/2017] [Indexed: 10/19/2022]
Abstract
Epidermal growth factor receptor (EGFR) is a widely recognized target for tumors, but resistance is commonly reported. Recently, we reported that dual targeting of EGFR and NOTCH2/3 receptors with antibody CT16 showed a strong anti-stem effect both in vitro and in vivo to overcome resistance of EGFR inhibitors and radiation.
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Affiliation(s)
- Shi Hu
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China
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19
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Yu X, Wang L, Shen Y, Wang C, Zhang Y, Meng Y, Yang Y, Liang B, Zhou B, Wang H, Wei H, Lei C, Hu S, Li B. Targeting EGFR/HER2 heterodimerization with a novel anti-HER2 domain II/III antibody. Mol Immunol 2017; 87:300-307. [PMID: 28531814 DOI: 10.1016/j.molimm.2017.05.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 05/04/2017] [Accepted: 05/14/2017] [Indexed: 11/25/2022]
Abstract
HER2, a ligand-free tyrosine kinase receptor of the HER family, is frequently overexpressed in breast cancer. The anti-HER2 antibody trastuzumab has shown significant clinical benefits in metastatic breast cancer. Despite the effectiveness of trastuzumab, its efficacy remains variable and often modest. Thus, there is an urgent need to improve ErbB2-targeting therapy. Here, we describe a novel anti-HER2 antibody, 7C3, which was developed using hybridoma technique. Structural analysis confirms that the epitope of this antibody is in domain II/III of HER2. Moreover, a structural conformation change was observed in HER2 in complex with 7C3. Interestingly, this novel anti-HER2 antibody exhibits efficacy in blocking HER2/EGFR heterodimerization and signaling. The results highlight the different function role of HER2 domains and the unique potential of 7C3 to inhibit the HER2/EGFR heterodimer, which may complement current anti-HER2 treatments.
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Affiliation(s)
- Xiaojie Yu
- Shanghai Key Laboratory for Molecular Imaging, Shanghai University of Medicine and Health Sciences, Shanghai 201318, People's Republic of China; International Joint Cancer Institute, the Second Military Medical University, Shanghai 200433, People's Republic of China
| | - Lingfei Wang
- International Joint Cancer Institute, the Second Military Medical University, Shanghai 200433, People's Republic of China
| | - Yafeng Shen
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, 800 Xiangyin Road, Shanghai 200433, People's Republic of China
| | - Chao Wang
- International Joint Cancer Institute, the Second Military Medical University, Shanghai 200433, People's Republic of China
| | - Yajun Zhang
- International Joint Cancer Institute, the Second Military Medical University, Shanghai 200433, People's Republic of China
| | - Yanchun Meng
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, People's Republic of China
| | - Yang Yang
- Shanghai Key Laboratory for Molecular Imaging, Shanghai University of Medicine and Health Sciences, Shanghai 201318, People's Republic of China; International Joint Cancer Institute, the Second Military Medical University, Shanghai 200433, People's Republic of China
| | - Beibei Liang
- Shanghai Key Laboratory for Molecular Imaging, Shanghai University of Medicine and Health Sciences, Shanghai 201318, People's Republic of China
| | - Bo Zhou
- Shanghai Key Laboratory for Molecular Imaging, Shanghai University of Medicine and Health Sciences, Shanghai 201318, People's Republic of China
| | - Huajing Wang
- Shanghai Key Laboratory for Molecular Imaging, Shanghai University of Medicine and Health Sciences, Shanghai 201318, People's Republic of China; International Joint Cancer Institute, the Second Military Medical University, Shanghai 200433, People's Republic of China
| | - Huafeng Wei
- International Joint Cancer Institute, the Second Military Medical University, Shanghai 200433, People's Republic of China
| | - Changhai Lei
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, 800 Xiangyin Road, Shanghai 200433, People's Republic of China
| | - Shi Hu
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, 800 Xiangyin Road, Shanghai 200433, People's Republic of China.
| | - Bohua Li
- Shanghai Key Laboratory for Molecular Imaging, Shanghai University of Medicine and Health Sciences, Shanghai 201318, People's Republic of China; International Joint Cancer Institute, the Second Military Medical University, Shanghai 200433, People's Republic of China.
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20
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Hu S, Fu W, Li T, Yuan Q, Wang F, Lv G, Lv Y, Fan X, Shen Y, Lin F, Tang Y, Ye X, Yang Y, Lei C. Antagonism of EGFR and Notch limits resistance to EGFR inhibitors and radiation by decreasing tumor-initiating cell frequency. Sci Transl Med 2017; 9:9/380/eaag0339. [PMID: 28275151 DOI: 10.1126/scitranslmed.aag0339] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 10/16/2016] [Accepted: 02/11/2017] [Indexed: 12/15/2022]
Abstract
Epidermal growth factor receptor (EGFR) blockade and radiation are efficacious in the treatment of cancer, but resistance is commonly reported. Studies have suggested that dysregulation of Notch signaling and enrichment of the cancer stem cell population underlie these treatment challenges. Our data show that dual targeting of EGFR and Notch2/3 receptors with antibody CT16 not only inhibited signaling mediated by these receptors but also showed a strong anti-stem cell effect both in vitro and in vivo. Treatment with CT16 prevented acquired resistance to EGFR inhibitors and radiation in non-small cell lung cancer (NSCLC) cell line models and patient-derived xenograft tumors. CT16 also had a superior radiosensitizing impact compared with EGFR inhibitors. CT16 in combination with radiation had a larger antitumor effect than the combination of radiation with EGFR inhibitors or tarextumab. Mechanistically, CT16 treatment inhibits the stem cell-like subpopulation, which has a high mesenchymal gene expression and DNA repair activity, and reduces tumor-initiating cell frequency. This finding highlights the capacity of a combined blockade of EGFR and Notch signaling to augment the response to radiation and suggests that CT16 may achieve clinical efficacy when combined with radiation in NSCLC treatment.
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Affiliation(s)
- Shi Hu
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai 200433, China.
| | - Wenyan Fu
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200030, China.,Department of Breast Surgery, Key Laboratory of Breast Cancer in Shanghai, Collaborative Innovation Center of Cancer Medicine, Fudan University Shanghai Cancer Center, Shanghai 200030, China
| | - Tian Li
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai 200433, China
| | - Qingning Yuan
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai 200433, China
| | - Feifei Wang
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai 200433, China
| | - Gaojian Lv
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai 200433, China
| | - Yuanyuan Lv
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai 200433, China
| | - Xiaoyan Fan
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai 200433, China
| | - Yafeng Shen
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai 200433, China
| | - Fangxing Lin
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai 200433, China
| | - Ying Tang
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai 200433, China
| | - Xuting Ye
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai 200433, China
| | - Yongji Yang
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai 200433, China
| | - Changhai Lei
- Department of Biophysics, College of Basic Medical Sciences, Second Military Medical University, Shanghai 200433, China.
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