1501
|
Kaya T, Kaneko T, Kojima S, Nakamura Y, Ide Y, Ishida K, Suda Y, Yamashita K. High-sensitivity immunoassay with surface plasmon field-enhanced fluorescence spectroscopy using a plastic sensor chip: application to quantitative analysis of total prostate-specific antigen and GalNAcβ1-4GlcNAc-linked prostate-specific antigen for prostate cancer diagnosis. Anal Chem 2015; 87:1797-803. [PMID: 25546230 DOI: 10.1021/ac503735e] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A high-sensitivity immunoassay system with surface plasmon field-enhanced fluorescence spectrometry (SPFS) was constructed using a plastic sensor chip and then applied to the detection of total prostate-specific antigen (total PSA) and GalNAcβ1-4GlcNAc-linked prostate-specific antigen (LacdiNAc-PSA) in serum, to discriminate between prostate cancer (PC) and benign prostate hyperplasia (BPH). By using this automated SPFS immunoassay, the detection limit for total PSA in serum was as low as 0.04 pg/mL, and the dynamic range was estimated to be at least five digits. A two-step sandwich SPFS immunoassay for LacdiNAc-PSA was constructed using both the anti-PSA IgG antibody to capture PSA and Wisteria floribunda agglutinin (WFA) for the detection of LacdiNAc. The results of the LacdiNAc-PSA immunoassay with SPFS showed that the assay had a sensitivity of 20.0 pg/mL and permitted the specific distinction between PC and BPH within the PSA gray zone. These results suggested that high-sensitivity automated SPFS immunoassay systems might become a powerful tool for the diagnosis of PC and other diseases.
Collapse
Affiliation(s)
- Takatoshi Kaya
- Corporate R&D Headquarters, Konica Minolta, Inc. , No. 1 Sakura-machi, Hino-shi, Tokyo 191-8511, Japan
| | | | | | | | | | | | | | | |
Collapse
|
1502
|
Desbois M, Champiat S, Chaput N. [Breaking immune tolerance in cancer]. Bull Cancer 2015; 102:34-52. [PMID: 25609492 DOI: 10.1016/j.bulcan.2014.12.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Accepted: 11/01/2014] [Indexed: 11/20/2022]
Abstract
The discovery and understanding of complex cellular interactions that govern the immune system contributed to the pharmacological targeting of anti-tumor immunity. The activity of immune effector cells, such as NK and T-cells, is regulated by a wide range of activating and inhibiting receptors or ligands. Drugs that target these receptors or ligands can modulate the immune response by exerting antagonistic or agonistic effects. Over the past decade, several immunomodulators have demonstrated clinical effectiveness, and three of them have already been approved for use in oncology. The development of these immunotherapy approaches presented unique challenges for safety and efficacy, requiring revising clinical response criteria and the establishment of guidelines to help oncologists to manage properly inflammatory toxicities. The introduction of these immunotherapies is a revolution in oncology. However, additional efforts in terms of optimizing treatment administration and identification of biomarkers are needed. Identifying the immunodynamics of various immunomodulators should allow a better understanding of anti-tumor and inflammatory mechanisms, and certainly give the opportunity to develop effective therapeutic combinations without potentiating adverse events.
Collapse
Affiliation(s)
- Mélanie Desbois
- Gustave-Roussy cancer campus, 39, rue Camille-Desmoulins, 94805 Villejuif, France; Gustave-Roussy cancer campus, centre d'investigation clinique biothérapie 1428, Inserm, 39, rue Camille-Desmoulins, 94805 Villejuif, France; Université Paris-Sud, faculté de médecine, 63, rue Gabriel-Péri, 94270 Kremlin-Bicêtre, France; Gustave-Roussy cancer campus, laboratoire d'immunomonitoring en oncologie, UMS 3655 CNRS et US 23 Inserm, 39, rue Camille-Desmoulins, 94805 Villejuif, France
| | - Stéphane Champiat
- Gustave-Roussy cancer campus, 39, rue Camille-Desmoulins, 94805 Villejuif, France; Gustave-Roussy cancer campus, département des innovations thérapeutiques et d'essais précoces (DITEP), 39, rue Camille-Desmoulins, 94805 Villejuif, France; Institut de cancérologie de l'Ouest, boulevard Jacques-Monod, 44800 Saint-Herblain, France
| | - Nathalie Chaput
- Gustave-Roussy cancer campus, 39, rue Camille-Desmoulins, 94805 Villejuif, France; Gustave-Roussy cancer campus, centre d'investigation clinique biothérapie 1428, Inserm, 39, rue Camille-Desmoulins, 94805 Villejuif, France; Gustave-Roussy cancer campus, laboratoire d'immunomonitoring en oncologie, UMS 3655 CNRS et US 23 Inserm, 39, rue Camille-Desmoulins, 94805 Villejuif, France.
| |
Collapse
|
1503
|
Abstract
The safety pharmacology testing for anticancer agents has historically differed for small molecule pharmaceutical drugs versus large-molecule biopharmaceuticals. For pharmaceutical drugs, dedicated safety pharmacology studies have been conducted according to the ICH M3 (R2), ICH 7A, and ICH S7B guidance documents. For biopharmaceuticals, safety pharmacology endpoints have been incorporated into the repeated-dose toxicology studies according to ICHS6 (R1). However, the introduction of the ICH S9 guidance document for the nonclinical evaluation for anticancer pharmaceuticals has allowed for a streamlined approach for both types of molecules to facilitate access of new potential therapeutics to cancer patients and to reduce the number of animal studies. Examples of the testing strategies that have previously been employed for some representative anticancer agents are provided, and their predictivity to adverse events noted in the clinic is discussed.
Collapse
Affiliation(s)
- Pauline L Martin
- Department of Biologics Toxicology, Janssen Research and Development, 1400 McKean Road, Spring House, PA, 19477, USA,
| |
Collapse
|
1504
|
Liu Z, Zhao H, He L, Yao Y, Zhou Y, Wu J, Liu J, Ding J. Aptamer density dependent cellular uptake of lipid-capped polymer nanoparticles for polyvalent targeted delivery of vinorelbine to cancer cells. RSC Adv 2015. [DOI: 10.1039/c4ra16371k] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
In this work, MUC1 aptamer (designated S2.2) modified and vinorelbine (VRL) loaded lipid-polymer hybrid nanoparticles (Apt-VRL-NPs) were prepared.
Collapse
Affiliation(s)
- Zhenbao Liu
- School of Pharmaceutical Sciences
- Central South University
- Changsha 410013
- People's Republic of China
| | - Huanzhe Zhao
- School of Pharmaceutical Sciences
- Central South University
- Changsha 410013
- People's Republic of China
| | - Lingyun He
- School of Pharmaceutical Sciences
- Central South University
- Changsha 410013
- People's Republic of China
| | - Yao Yao
- School of Pharmaceutical Sciences
- Central South University
- Changsha 410013
- People's Republic of China
| | - Yanbin Zhou
- School of Pharmaceutical Sciences
- Central South University
- Changsha 410013
- People's Republic of China
| | - Jianping Wu
- School of Pharmaceutical Sciences
- Central South University
- Changsha 410013
- People's Republic of China
| | - Juewen Liu
- School of Pharmaceutical Sciences
- Central South University
- Changsha 410013
- People's Republic of China
- Department of Chemistry
| | - Jinsong Ding
- School of Pharmaceutical Sciences
- Central South University
- Changsha 410013
- People's Republic of China
| |
Collapse
|
1505
|
Enninga EAL, Nevala WK, Holtan SG, Markovic SN. Immune Reactivation by Cell-Free Fetal DNA in Healthy Pregnancies Re-Purposed to Target Tumors: Novel Checkpoint Inhibition in Cancer Therapeutics. Front Immunol 2015; 6:424. [PMID: 26379664 PMCID: PMC4549650 DOI: 10.3389/fimmu.2015.00424] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Accepted: 08/03/2015] [Indexed: 12/11/2022] Open
Abstract
The role of the immune system in cancer progression has become increasingly evident over the past decade. Chronic inflammation in the promotion of tumorigenesis is well established, and cancer-associated tolerance/immune evasion has long been appreciated. Recent developments of immunotherapies targeting cancer-associated inflammation and immune tolerance, such as cancer vaccines, cell therapies, neutralizing antibodies, and immune checkpoint inhibitors, have shown promising clinical results. However, despite significant therapeutic advances, most patients diagnosed with metastatic cancer still succumb to their malignancy. Treatments are often toxic, and the financial burden of novel therapies is significant. Thus, new methods for utilizing similar biological systems to compare complex biological processes can give us new hypotheses for combating cancer. One such approach is comparing trophoblastic growth and regulation to tumor invasion and immune escape. Novel concepts regarding immune activation in pregnancy, especially reactivation of the immune system at labor through toll like receptor engagement by fetal derived DNA, may be applicable to cancer immunotherapy. This review summarizes mechanisms of inflammation in cancer, current immunotherapies used in the clinic, and suggestions for looking beyond oncology for novel methods to reverse cancer-associated tolerance and immunologic exhaustion utilizing mechanisms encountered in normal human pregnancy.
Collapse
Affiliation(s)
| | | | - Shernan G. Holtan
- Department of Transplantation, University of Minnesota, Minneapolis, MN, USA
| | - Svetomir N. Markovic
- Department of Hematology, Mayo Clinic, Rochester, MN, USA
- Department of Oncology, Mayo Clinic, Rochester, MN, USA
- *Correspondence: Svetomir N. Markovic, Department of Hematology/Oncology, 200 First Street SW, Rochester, MN 55905, USA,
| |
Collapse
|
1506
|
Lytton-Jean AKR, Kauffman KJ, Kaczmarek JC, Langer R. Cancer nanotherapeutics in clinical trials. Cancer Treat Res 2015; 166:293-322. [PMID: 25895874 DOI: 10.1007/978-3-319-16555-4_13] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
To be legally sold in the United States, all drugs must go through the FDA approval process. This chapter introduces the FDA approval process and describes the clinical trials required for a drug to gain approval. We then look at the different cancer nanotherapeutics and in vivo diagnostics that are currently in clinical trials or have already received approval. These nanotechnologies are catagorized and described based on the delivery vehicle: liposomes, polymer micelles, albumin-bound chemotherapeutics, polymer-bound chemotherapeutics, and inorganic particles.
Collapse
Affiliation(s)
- Abigail K R Lytton-Jean
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | | | | | | |
Collapse
|
1507
|
Feng L, Wang W, Yao HP, Zhou J, Zhang R, Wang MH. Human tumor xenografts in mouse as a model for evaluating therapeutic efficacy of monoclonal antibodies or antibody-drug conjugate targeting receptor tyrosine kinases. Methods Mol Biol 2015; 1233:151-9. [PMID: 25319897 DOI: 10.1007/978-1-4939-1789-1_14] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Targeting receptor tyrosine kinases by therapeutic monoclonal antibodies and antibody-drug conjugates has met with tremendous success in clinical oncology. Currently, numerous therapeutic monoclonal antibodies are under preclinical development. The potential for moving candidate antibodies into clinical trials relies heavily on therapeutic efficacy validated by human tumor xenografts in mice. Here we describe methods used to determine therapeutic efficacy of monoclonal antibodies or antibody-drug conjugates specific to human receptor tyrosine kinase using human tumor xenografts in mice as the model. The end point of the study is to determine whether treatment of tumor-bearing mice with a monoclonal antibody or antibody-drug conjugates results in significant delay of tumor growth.
Collapse
Affiliation(s)
- Liang Feng
- Cancer Biology Research Center, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, 79106, USA
| | | | | | | | | | | |
Collapse
|
1508
|
Chen Y, Gao DY, Huang L. In vivo delivery of miRNAs for cancer therapy: challenges and strategies. Adv Drug Deliv Rev 2015; 81:128-41. [PMID: 24859533 PMCID: PMC5009470 DOI: 10.1016/j.addr.2014.05.009] [Citation(s) in RCA: 478] [Impact Index Per Article: 53.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2014] [Revised: 04/15/2014] [Accepted: 05/15/2014] [Indexed: 12/15/2022]
Abstract
MicroRNAs (miRNAs), small non-coding RNAs, can regulate post-transcriptional gene expressions and silence a broad set of target genes. miRNAs, aberrantly expressed in cancer cells, play an important role in modulating gene expressions, thereby regulating downstream signaling pathways and affecting cancer formation and progression. Oncogenes or tumor suppressor genes regulated by miRNAs mediate cell cycle progression, metabolism, cell death, angiogenesis, metastasis and immunosuppression in cancer. Recently, miRNAs have emerged as therapeutic targets or tools and biomarkers for diagnosis and therapy monitoring in cancer. Since miRNAs can regulate multiple cancer-related genes simultaneously, using miRNAs as a therapeutic approach plays an important role in cancer therapy. However, one of the major challenges of miRNA-based cancer therapy is to achieve specific, efficient and safe systemic delivery of therapeutic miRNAs in vivo. This review discusses the key challenges to the development of the carriers for miRNA-based therapy and explores current strategies to systemically deliver miRNAs to cancer without induction of toxicity.
Collapse
Affiliation(s)
- Yunching Chen
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC.
| | - Dong-Yu Gao
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
| | - Leaf Huang
- Division of Molecular Pharmaceutics and Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| |
Collapse
|
1509
|
Mi Li, Lianqing Liu, Ning Xi, Yuechao Wang, Xiubin Xiao, Weijing Zhang. Quantitative Analysis of Drug-Induced Complement-Mediated Cytotoxic Effect on Single Tumor Cells Using Atomic Force Microscopy and Fluorescence Microscopy. IEEE Trans Nanobioscience 2015; 14:84-94. [DOI: 10.1109/tnb.2014.2370759] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
1510
|
McEnaney PJ, Fitzgerald KJ, Zhang AX, Douglass EF, Shan W, Balog A, Kolesnikova MD, Spiegel DA. Chemically synthesized molecules with the targeting and effector functions of antibodies. J Am Chem Soc 2014; 136:18034-43. [PMID: 25514603 PMCID: PMC4291750 DOI: 10.1021/ja509513c] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Indexed: 12/21/2022]
Abstract
This article reports the design, synthesis, and evaluation of a novel class of molecules of intermediate size (approximately 7000 Da), which possess both the targeting and effector functions of antibodies. These compounds—called synthetic antibody mimics targeting prostate cancer (SyAM-Ps)—bind simultaneously to prostate-specific membrane antigen and Fc gamma receptor I, thus eliciting highly selective cancer cell phagocytosis. SyAMs have the potential to combine the advantages of both small-molecule and biologic therapies, and may address many drawbacks associated with available treatments for cancer and other diseases.
Collapse
Affiliation(s)
- Patrick J McEnaney
- Department of Chemistry, Yale University , 225 Prospect Street, New Haven, Connecticut 06511, United States
| | | | | | | | | | | | | | | |
Collapse
|
1511
|
Makkouk A, Weiner GJ. Cancer immunotherapy and breaking immune tolerance: new approaches to an old challenge. Cancer Res 2014; 75:5-10. [PMID: 25524899 DOI: 10.1158/0008-5472.can-14-2538] [Citation(s) in RCA: 209] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Cancer immunotherapy has proven to be challenging as it depends on overcoming multiple mechanisms that mediate immune tolerance to self-antigens. A growing understanding of immune tolerance has been the foundation for new approaches to cancer immunotherapy. Adoptive transfer of immune effectors such as antitumor mAb and chimeric antigen receptor T cells bypasses many of the mechanisms involved in immune tolerance by allowing for expansion of tumor-specific effectors ex vivo. Vaccination with whole tumor cells, protein, peptide, or dendritic cells has proven challenging, yet may be more useful when combined with other cancer immunotherapeutic strategies. Immunomodulatory approaches to cancer immunotherapy include treatment with agents that enhance and maintain T-cell activation. Recent advances in the use of checkpoint blockade to block negative signals and to maintain the antitumor response are particularly exciting. With our growing knowledge of immune tolerance and ways to overcome it, combination treatments are being developed, tested, and have particular promise. One example is in situ immunization that is designed to break tolerance within the tumor microenvironment. Progress in all these areas is continuing based on clear evidence that cancer immunotherapy designed to overcome immune tolerance can be useful for a growing number of patients with cancer.
Collapse
Affiliation(s)
- Amani Makkouk
- Interdisciplinary Graduate Program in Immunology, University of Iowa, Iowa City, Iowa
| | - George J Weiner
- Interdisciplinary Graduate Program in Immunology, University of Iowa, Iowa City, Iowa. Holden Comprehensive Cancer Center and Department of Internal Medicine, University of Iowa, Iowa City, Iowa.
| |
Collapse
|
1512
|
Watanabe K, Terakura S, Martens AC, van Meerten T, Uchiyama S, Imai M, Sakemura R, Goto T, Hanajiri R, Imahashi N, Shimada K, Tomita A, Kiyoi H, Nishida T, Naoe T, Murata M. Target antigen density governs the efficacy of anti-CD20-CD28-CD3 ζ chimeric antigen receptor-modified effector CD8+ T cells. THE JOURNAL OF IMMUNOLOGY 2014; 194:911-20. [PMID: 25520398 DOI: 10.4049/jimmunol.1402346] [Citation(s) in RCA: 214] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The effectiveness of chimeric Ag receptor (CAR)-transduced T (CAR-T) cells has been attributed to supraphysiological signaling through CARs. Second- and later-generation CARs simultaneously transmit costimulatory signals with CD3ζ signals upon ligation, but may lead to severe adverse effects owing to the recognition of minimal Ag expression outside the target tumor. Currently, the threshold target Ag density for CAR-T cell lysis and further activation, including cytokine production, has not yet been investigated in detail. Therefore, we determined the threshold target Ag density required to induce CAR-T cell responses using novel anti-CD20 CAR-T cells with a CD28 intracellular domain and a CD20-transduced CEM cell model. The newly developed CD20CAR-T cells demonstrated Ag-specific lysis and cytokine secretion, which was a reasonable level as a second-generation CAR. For lytic activity, the threshold Ag density was determined to be ∼200 molecules per target cell, whereas the Ag density required for cytokine production of CAR-T cells was ∼10-fold higher, at a few thousand per target cell. CD20CAR-T cells responded efficiently to CD20-downregulated lymphoma and leukemia targets, including rituximab- or ofatumumab-refractory primary chronic lymphocytic leukemia cells. Despite the potential influence of the structure, localization, and binding affinity of the CAR/Ag, the threshold determined may be used for target Ag selection. An Ag density below the threshold may not result in adverse effects, whereas that above the threshold may be sufficient for practical effectiveness. CD20CAR-T cells also demonstrated significant lytic activity against CD20-downregulated tumor cells and may exhibit effectiveness for CD20-positive lymphoid malignancies.
Collapse
Affiliation(s)
- Keisuke Watanabe
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya 466-8560, Japan
| | - Seitaro Terakura
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya 466-8560, Japan;
| | - Anton C Martens
- Department of Hematology, VU University Medical Center Amsterdam, 1007 MB Amsterdam, the Netherlands; Department of Immunology, University Medical Center Utrecht, 3508 GA Utrecht, the Netherlands
| | - Tom van Meerten
- Department of Hematology, University Medical Center Groningen, 9700 RB Groningen, the Netherlands
| | - Susumu Uchiyama
- Division of Advanced Science and Biotechnology, Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan
| | - Misa Imai
- Faculty of Pharmacy, Meijo University, Nagoya 468-8503, Japan
| | - Reona Sakemura
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya 466-8560, Japan
| | - Tatsunori Goto
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya 466-8560, Japan
| | - Ryo Hanajiri
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya 466-8560, Japan
| | - Nobuhiko Imahashi
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya 466-8560, Japan
| | - Kazuyuki Shimada
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya 466-8560, Japan; Institute for Advanced Research, Nagoya University, Nagoya 464-8601, Japan; and
| | - Akihiro Tomita
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya 466-8560, Japan
| | - Hitoshi Kiyoi
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya 466-8560, Japan
| | - Tetsuya Nishida
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya 466-8560, Japan
| | - Tomoki Naoe
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya 466-8560, Japan; National Hospital Organization Nagoya Medical Center, Nagoya 460-0001, Japan
| | - Makoto Murata
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya 466-8560, Japan
| |
Collapse
|
1513
|
Michaud HA, Eliaou JF, Lafont V, Bonnefoy N, Gros L. Tumor antigen-targeting monoclonal antibody-based immunotherapy: Orchestrating combined strategies for the development of long-term antitumor immunity. Oncoimmunology 2014; 3:e955684. [PMID: 25941618 DOI: 10.4161/21624011.2014.955684] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Accepted: 08/04/2014] [Indexed: 01/09/2023] Open
Abstract
Tumor antigen (TA)-targeting monoclonal antibody (mAb)-based treatments are considered to be one of the most successful strategies in cancer therapy. Besides targeting TAs and inducing tumor cell death, such antibodies interact with immune cells through Fc-dependent mechanisms to induce adaptive memory immune responses. However, multiple inhibitory/immunosuppressive pathways can be induced by tumor cells to limit the establishment of an efficient antitumor response and consequently a sustained clinical response to TA-targeting mAbs. Here, we provide an overview on how TA-targeting mAbs in combination with conventional cancer therapies and/or inhibitors of key immunosuppressive pathways might represent promising approaches to achieve long-term tumor control.
Collapse
Key Words
- ADCC, antibody-dependent cell cytotoxicity
- ADCP, antibody-dependent cell phagocytosis
- B-NHL, B-cell non-Hodgkin's lymphoma
- CDC, complement-dependent cytotoxicity
- CTLA4, cytotoxic T-lymphocyte-associated protein 4
- DC, dendritic cell
- FDA, food and drug administration
- FcRn, neonatal Fc receptor
- HMGB1, high-mobility group box 1
- ICD, immunologic cell death
- IDO, indoleamine 2, 3-dioxygenase
- IFNγ, interferon γ
- MDSC, myeloid-derived suppressor cell
- NK, natural killer
- PD-1, programmed cell death 1
- TA, tumor antigen
- TA-targeting mAbs
- Treg, regulatory T cell
- combined therapies
- immunomodulation
- immunosuppressive pathways
- mAb, monoclonal antibody
- vaccine-like effects
Collapse
Affiliation(s)
- Henri-Alexandre Michaud
- Institut de Recherche en Cancérologie de Montpellier; Inserm U896 ; Institut Régional de Lutte contre le Cancer (ICM); Université Montpellier 1 ; Montpellier Cedex, France
| | - Jean-François Eliaou
- Institut de Recherche en Cancérologie de Montpellier; Inserm U896 ; Institut Régional de Lutte contre le Cancer (ICM); Université Montpellier 1 ; Montpellier Cedex, France ; Département d'Immunologie; CHRU Montpellier and Faculté de Médecine; Université Montpellier I ; Montpellier Cedex, France
| | - Virginie Lafont
- Institut de Recherche en Cancérologie de Montpellier; Inserm U896 ; Institut Régional de Lutte contre le Cancer (ICM); Université Montpellier 1 ; Montpellier Cedex, France
| | - Nathalie Bonnefoy
- Institut de Recherche en Cancérologie de Montpellier; Inserm U896 ; Institut Régional de Lutte contre le Cancer (ICM); Université Montpellier 1 ; Montpellier Cedex, France ; co-senior authors
| | - Laurent Gros
- Institut de Recherche en Cancérologie de Montpellier; Inserm U896 ; Institut Régional de Lutte contre le Cancer (ICM); Université Montpellier 1 ; Montpellier Cedex, France ; co-senior authors
| |
Collapse
|
1514
|
Prat M, Oltolina F, Basilico C. Monoclonal Antibodies against the MET/HGF Receptor and Its Ligand: Multitask Tools with Applications from Basic Research to Therapy. Biomedicines 2014; 2:359-383. [PMID: 28548076 PMCID: PMC5344273 DOI: 10.3390/biomedicines2040359] [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: 10/06/2014] [Revised: 11/21/2014] [Accepted: 11/24/2014] [Indexed: 12/19/2022] Open
Abstract
Monoclonal antibodies can be seen as valuable tools for many aspects of basic as well as applied sciences. In the case of MET/HGFR, they allowed the identification of truncated isoforms of the receptor, as well as the dissection of different epitopes, establishing structure-function relationships. Antibodies directed against MET extracellular domain were found to be full or partial receptor agonists or antagonists. The agonists can mimic the effects of the different isoforms of the natural ligand, but with the advantage of being more stable than the latter. Thus, some agonist antibodies promote all the biological responses triggered by MET activation, including motility, proliferation, morphogenesis, and protection from apoptosis, while others can induce only a migratory response. On the other hand, antagonists can inhibit MET-driven biological functions either by competing with the ligand or by removing the receptor from the cell surface. Since MET/HGFR is often over-expressed and/or aberrantly activated in tumors, monoclonal antibodies can be used as probes for MET detection or as "bullets" to target MET-expressing tumor cells, thus pointing to their use in diagnosis and therapy.
Collapse
Affiliation(s)
- Maria Prat
- Department of Health Sciences, Università del Piemonte Orientale, via Solaroli 17, 28100 Novara, Italy.
| | - Francesca Oltolina
- Department of Health Sciences, Università del Piemonte Orientale, via Solaroli 17, 28100 Novara, Italy.
| | - Cristina Basilico
- Laboratory of Exploratory Research, Candiolo Cancer Institute, Str. Prov. 142, 10060 Candiolo, Italy.
| |
Collapse
|
1515
|
Sun W, Lu Y, Gu Z. Advances in Anticancer Protein Delivery Using Micro-/ Nanoparticles. PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION : MEASUREMENT AND DESCRIPTION OF PARTICLE PROPERTIES AND BEHAVIOR IN POWDERS AND OTHER DISPERSE SYSTEMS 2014; 31:1204-1222. [PMID: 27642232 PMCID: PMC5026193 DOI: 10.1002/ppsc.201400140] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2014] [Indexed: 04/14/2023]
Abstract
Proteins exhibiting anticancer activities, especially those capable of discriminately killing cancer cells, have attracted increasing interest in developing protein-based anticancer therapeutics. This progress report surveys recent advances in delivering anticancer proteins directly to tumor tissue for inducing apoptosis/necrosis or indirectly to antigen presenting cells for provoking immune responses. Protein delivery carriers such as inorganic particles, lipid particles, polymeric particles, DNA/protein based biomacromolecular particles as well as cell based carriers are reviewed with comments on their advantages and limitations. Future challenges and opportunities are also discussed.
Collapse
Affiliation(s)
- Wujin Sun
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, NC, 27695, USA
- Center for Nanotechnology in Drug Delivery and Division of Molecular Pharmaceutics, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Yue Lu
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, NC, 27695, USA
- Center for Nanotechnology in Drug Delivery and Division of Molecular Pharmaceutics, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Zhen Gu
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, NC, 27695, USA
- Center for Nanotechnology in Drug Delivery and Division of Molecular Pharmaceutics, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| |
Collapse
|
1516
|
Guilleminault L, Azzopardi N, Arnoult C, Sobilo J, Hervé V, Montharu J, Guillon A, Andres C, Herault O, Le Pape A, Diot P, Lemarié E, Paintaud G, Gouilleux-Gruart V, Heuzé-Vourc'h N. Fate of inhaled monoclonal antibodies after the deposition of aerosolized particles in the respiratory system. J Control Release 2014; 196:344-54. [DOI: 10.1016/j.jconrel.2014.10.003] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Revised: 09/30/2014] [Accepted: 10/02/2014] [Indexed: 12/18/2022]
|
1517
|
Kao CH, Wang JY, Chuang KH, Chuang CH, Cheng TC, Hsieh YC, Tseng YL, Chen BM, Roffler SR, Cheng TL. One-step mixing with humanized anti-mPEG bispecific antibody enhances tumor accumulation and therapeutic efficacy of mPEGylated nanoparticles. Biomaterials 2014; 35:9930-9940. [DOI: 10.1016/j.biomaterials.2014.08.032] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Accepted: 08/20/2014] [Indexed: 12/11/2022]
|
1518
|
van Vuren A, Meyer-Wentrup F. New targets for antibody therapy of pediatric B cell lymphomas. Pediatr Blood Cancer 2014; 61:2158-63. [PMID: 25154500 DOI: 10.1002/pbc.25193] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Accepted: 06/26/2014] [Indexed: 12/31/2022]
Abstract
Antibody therapy has become standard of care for adult B cell lymphoma patients. It is a potentially less toxic and more targeted approach for lymphoma therapy and should therefore be applied to treat pediatric B cell lymphoma patients as well. In pediatric lymphoma patients, however, clinical experience with monoclonal antibodies is very limited. This is in part due to smaller patient numbers and very good outcome with conventional chemotherapy. In addition, pediatric patient and lymphoma biology differ significantly from that found in adults often precluding extrapolation of the adult experience to children. This review focuses on targeting pediatric B cell lymphoma with monoclonal antibody therapy. The special characteristics of B cell lymphomas found in children are reviewed and six potential new lymphoma target antigens are discussed.
Collapse
Affiliation(s)
- Annelies van Vuren
- Department of Pediatric Hematology and Oncology, Wilhelmina Children's Hospital, University Medical Center Utrecht, Utrecht, the Netherlands
| | | |
Collapse
|
1519
|
Lameris R, de Bruin RCG, Schneiders FL, van Bergen en Henegouwen PMP, Verheul HMW, de Gruijl TD, van der Vliet HJ. Bispecific antibody platforms for cancer immunotherapy. Crit Rev Oncol Hematol 2014; 92:153-65. [PMID: 25195094 DOI: 10.1016/j.critrevonc.2014.08.003] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2014] [Revised: 06/11/2014] [Accepted: 08/08/2014] [Indexed: 01/10/2023] Open
Abstract
Over the past decades advances in bioengineering and expanded insight in tumor immunology have resulted in the emergence of novel bispecific antibody (bsAb) constructs that are capable of redirecting immune effector cells to the tumor microenvironment. (Pre-) clinical studies of various bsAb constructs have shown impressive results in terms of immune effector cell retargeting, target dependent activation and the induction of anti-tumor responses. This review summarizes recent advances in the field of bsAb-therapy and limitations that were encountered. Furthermore, we will discuss potential future developments that can be expected to take the bsAb approach successfully forward.
Collapse
Affiliation(s)
- Roeland Lameris
- Department of Medical Oncology, VU University Medical Center, De Boelelaan 1117, 1081 HV Amsterdam, The Netherlands
| | - Renée C G de Bruin
- Department of Medical Oncology, VU University Medical Center, De Boelelaan 1117, 1081 HV Amsterdam, The Netherlands
| | - Famke L Schneiders
- Department of Medical Oncology, VU University Medical Center, De Boelelaan 1117, 1081 HV Amsterdam, The Netherlands
| | - Paul M P van Bergen en Henegouwen
- Division of Cell Biology, Department of Biology, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Henk M W Verheul
- Department of Medical Oncology, VU University Medical Center, De Boelelaan 1117, 1081 HV Amsterdam, The Netherlands
| | - Tanja D de Gruijl
- Department of Medical Oncology, VU University Medical Center, De Boelelaan 1117, 1081 HV Amsterdam, The Netherlands
| | - Hans J van der Vliet
- Department of Medical Oncology, VU University Medical Center, De Boelelaan 1117, 1081 HV Amsterdam, The Netherlands.
| |
Collapse
|
1520
|
Zarnani AH, Torabi-Rahvar M, Bozorgmehr M, Zareie M, Mojtabavi N. Improved Efficacy of a Dendritic Cell-Based Vaccine against a Murine Model of Colon Cancer: The Helper Protein Effect. Cancer Res Treat 2014; 47:518-26. [PMID: 25648091 PMCID: PMC4506100 DOI: 10.4143/crt.2013.241] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Accepted: 04/21/2014] [Indexed: 12/04/2022] Open
Abstract
Purpose Targeted immunotherapy using dendritic cells (DCs) has been employed in numerous investigations aiming at combating neoplasms. We previously showed that copulsing of an antigen with a helper protein could considerably enhance antigen presenting capacity of ex vivo–generated DCs. In this study, we attempted to administer an effective treatment in a murine model of colon cancer with DCs pulsed with the mixture of a tumor-specific gp70-derived peptide (AH1) and a helper protein, ovalbumin (OVA). Materials and Methods First, the presence of gp70 in CT26 tumor cells and tumor tissues was verified using immunofluorescence and Western blot analyses. Next, DCs were purified from normal mice, loaded ex vivowith AH1 and OVA (DC-Pep-OVA), and injected into tumor-bearing mice. Tumor volume, in vitro antigen (Ag)-specific proliferation of splenic cells, and survival rate were measured to determine the efficacy of DC-Pep-OVA. As the control groups, tumor-bearing mice were vaccinated with DC-Pep, unpulsed DC, and DCs loaded with a mixture of OVA and an irrelevant peptide (P15), or were not vaccinated at all. Results DC-Pep-OVA showed superior efficacy over other groups, as indicated by smaller tumor volume, higher Ag-specific proliferation rate of splenic cells, and prolonged survival. Conclusion Overall, in the present study we showed for the first time that DCs copulsed with AH1 (tumor Ag) and OVA (helper molecule) could be considered as potentially robust weapons for use in future antitumor immunotherapies.
Collapse
Affiliation(s)
- Amir-Hassan Zarnani
- Nanobiotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran ; Immunology Research Center, Iran University of Medical Sciences, Tehran, Iran
| | | | - Mahmood Bozorgmehr
- Nanobiotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Mehri Zareie
- Independent Research Consultant, Toronto, Canada
| | - Nazanin Mojtabavi
- Department of Immunology, Iran University of Medical Sciences, Tehran, Iran
| |
Collapse
|
1521
|
Shefet-Carasso L, Benhar I. Antibody-targeted drugs and drug resistance--challenges and solutions. Drug Resist Updat 2014; 18:36-46. [PMID: 25476546 DOI: 10.1016/j.drup.2014.11.001] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2014] [Revised: 11/16/2014] [Accepted: 11/17/2014] [Indexed: 11/24/2022]
Abstract
Antibody-based therapy of various human malignancies has shown efficacy in the past 30 years and is now one of the most successful and leading strategies for targeted treatment of patients harboring hematological malignancies and solid tumors. Antibody-drug conjugates (ADCs) aim to take advantage of the affinity and specificity of monoclonal antibodies (mAbs) to selectively deliver potent cytotoxic drugs to antigen-expressing tumor cells. Key parameters for ADC include choosing the optimal components of the ADC (the antibody, the linker and the cytotoxic drug) and selecting the suitable cell-surface target antigen. Building on the success of recent FDA approval of brentuximab vedotin (Adcetris) and ado-trastuzumab emtansine (Kadcyla), ADCs are currently a class of drugs with a robust pipeline with clinical applications that are rapidly expanding. The more ADCs are being evaluated in preclinical models and clinical trials, the clearer are becoming the parameters and the challenges required for their therapeutic success. This rapidly growing knowledge and clinical experience are revealing novel modalities and mechanisms of resistance to ADCs, hence offering plausible solutions to such challenges. Here, we review the key parameters for designing a powerful ADC, focusing on how ADCs are addressing the challenge of multiple drug resistance (MDR) and its rational overcoming.
Collapse
Affiliation(s)
- LeeRon Shefet-Carasso
- Department of Molecular Microbiology and Biotechnology, The George S. Wise Faculty of Life Sciences, Tel-Aviv University, Ramat Aviv, Israel
| | - Itai Benhar
- Department of Molecular Microbiology and Biotechnology, The George S. Wise Faculty of Life Sciences, Tel-Aviv University, Ramat Aviv, Israel.
| |
Collapse
|
1522
|
Mallinckrodt BV, Thakur M, Weng A, Gilabert-Oriol R, Dürkop H, Brenner W, Lukas M, Beindorff N, Melzig MF, Fuchs H. Dianthin-EGF is an effective tumor targeted toxin in combination with saponins in a xenograft model for colon carcinoma. Future Oncol 2014; 10:2161-75. [DOI: 10.2217/fon.14.164] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
ABSTRACT Aims: The intention of this work was to lift saponin supported tumor targeted therapies onto the next level by using targeted toxins in nude mice xenotransplant models. Materials & methods: Combined application of dianthin coupled to EGF and saponin SO-1861 was tested in a xenograft model of colon carcinoma. In vitro cytotoxicity was tested in real-time in NIH3T3 cells (no human EGF receptor expression), HER14 and human colon carcinoma HCT116 (both EGF receptor overexpressing) cells. A xenograft model was established using HCT116 cells and tumor-bearing animals were treated with SO-1861 (30 µg/treatment) and dianthin coupled to EGF (0.35 µg/treatment). Tumor progression was monitored, using 18F-2-fluor-2-desoxy-d-glucose, by small animal PET and by x-ray computed tomography. Results: In vitro results demonstrated a high-receptor specificity and the in vivo experiment showed a progressive reduction of the tumor volume and glycolytic activity in the treated group (>95% reduction; p < 0.05). Conclusion: This therapy has great advantage because of high specificity, low side effects and great effectiveness for future development in the treatment of colon cancer.
Collapse
Affiliation(s)
- Benedicta von Mallinckrodt
- Institute for Laboratory Medicine, Clinical Chemistry & Pathobiochemistry, Charité – Universitätsmedizin Berlin, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353 Berlin, Germany
| | - Mayank Thakur
- Institute for Laboratory Medicine, Clinical Chemistry & Pathobiochemistry, Charité – Universitätsmedizin Berlin, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353 Berlin, Germany
| | - Alexander Weng
- Institute for Laboratory Medicine, Clinical Chemistry & Pathobiochemistry, Charité – Universitätsmedizin Berlin, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353 Berlin, Germany
| | - Roger Gilabert-Oriol
- Institute for Laboratory Medicine, Clinical Chemistry & Pathobiochemistry, Charité – Universitätsmedizin Berlin, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353 Berlin, Germany
| | - Horst Dürkop
- Pathodiagnostik Berlin, Referenzzentrum für Lymphom-und Hämatopathologie, Komturstraße 58, Berlin, Germany
| | - Winfried Brenner
- Department of Nuclear Medicine Charité – Universitätsmedizin Berlin, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353 Berlin
| | - Mathias Lukas
- Department of Nuclear Medicine Charité – Universitätsmedizin Berlin, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353 Berlin
- Department of Nuclear Medicine, Technical University Munich, Klinikum rechts der Isar, Ismaninger Straße 22, 81675 Munich, Germany
| | - Nicola Beindorff
- Department of Nuclear Medicine Charité – Universitätsmedizin Berlin, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353 Berlin
| | - Matthias F Melzig
- Institute of Pharmacy, Free University Berlin, Königin-Luise-Straße 2+4, 14195 Berlin, Germany
| | - Hendrik Fuchs
- Institute for Laboratory Medicine, Clinical Chemistry & Pathobiochemistry, Charité – Universitätsmedizin Berlin, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353 Berlin, Germany
| |
Collapse
|
1523
|
Baghdadi M, Takeuchi S, Wada H, Seino KI. Blocking monoclonal antibodies of TIM proteins as orchestrators of anti-tumor immune response. MAbs 2014; 6:1124-32. [PMID: 25517298 DOI: 10.4161/mabs.32107] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Monoclonal antibody (mAb)-based treatment of cancer has a significant effect on current practice in medical oncology, and is considered now as one of the most successful therapeutic strategies for cancer treatment. MAbs are designed to initiate or enhance anti-tumor immune responses, which can be achieved by either blocking inhibitory immune checkpoint molecules or triggering activating receptors. TIM gene family members are type-I surface molecules expressed in immune cells, and play important roles in the regulation of both innate and adaptive arms of the immune system. Therapeutic strategies based on anti-TIMs mAbs have shown promising results in experimental tumor models, and synergistic combinations of anti-TIMs mAbs with cancer vaccines, adoptive T-cell therapy, radiotherapy and chemotherapy will have great impact on cancer treatment in future clinical development.
Collapse
Affiliation(s)
- Muhammad Baghdadi
- a Division of Immunobiology; Institute for Genetic Medicine ; Hokkaido University ; Sapporo , Japan
| | | | | | | |
Collapse
|
1524
|
Mavilio D, Galluzzi L, Lugli E. Novel multifunctional antibody approved for the treatment of breast cancer. Oncoimmunology 2014; 2:e24567. [PMID: 23802090 PMCID: PMC3661175 DOI: 10.4161/onci.24567] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Accepted: 03/01/2013] [Indexed: 01/13/2023] Open
Affiliation(s)
- Domenico Mavilio
- Unit of Clinical and Experimental Immunology, Humanitas Clinical and Research Center; Rozzano, Italy
| | | | | |
Collapse
|
1525
|
Oh S, Lee BF, Leibfarth FA, Eisenstein M, Robb MJ, Lynd N, Hawker CJ, Soh HT. Synthetic aptamer-polymer hybrid constructs for programmed drug delivery into specific target cells. J Am Chem Soc 2014; 136:15010-5. [PMID: 25290917 PMCID: PMC4210129 DOI: 10.1021/ja5079464] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Indexed: 12/11/2022]
Abstract
Viruses have evolved specialized mechanisms to efficiently transport nucleic acids and other biomolecules into specific host cells. They achieve this by performing a coordinated series of complex functions, resulting in delivery that is far more efficient than existing synthetic delivery mechanisms. Inspired by these natural systems, we describe a process for synthesizing chemically defined molecular constructs that likewise achieve targeted delivery through a series of coordinated functions. We employ an efficient "click chemistry" technique to synthesize aptamer-polymer hybrids (APHs), coupling cell-targeting aptamers to block copolymers that secure a therapeutic payload in an inactive state. Upon recognizing the targeted cell-surface marker, the APH enters the host cell via endocytosis, at which point the payload is triggered to be released into the cytoplasm. After visualizing this process with coumarin dye, we demonstrate targeted killing of tumor cells with doxorubicin. Importantly, this process can be generalized to yield APHs that specifically target different surface markers.
Collapse
Affiliation(s)
- Seung
Soo Oh
- Materials Department, Department of Chemistry and Biochemistry, Department of Mechanical
Engineering, Materials Research Laboratory, University
of California, Santa Barbara, California 93106, United States
| | - Bongjae F. Lee
- Materials Department, Department of Chemistry and Biochemistry, Department of Mechanical
Engineering, Materials Research Laboratory, University
of California, Santa Barbara, California 93106, United States
- Chemical
Research Institute, Samsung Cheil Industries,
Inc., Seoul, Republic
of Korea 140739
| | - Frank A. Leibfarth
- Materials Department, Department of Chemistry and Biochemistry, Department of Mechanical
Engineering, Materials Research Laboratory, University
of California, Santa Barbara, California 93106, United States
| | - Michael Eisenstein
- Materials Department, Department of Chemistry and Biochemistry, Department of Mechanical
Engineering, Materials Research Laboratory, University
of California, Santa Barbara, California 93106, United States
| | - Maxwell J. Robb
- Materials Department, Department of Chemistry and Biochemistry, Department of Mechanical
Engineering, Materials Research Laboratory, University
of California, Santa Barbara, California 93106, United States
| | - Nathaniel
A. Lynd
- Materials Department, Department of Chemistry and Biochemistry, Department of Mechanical
Engineering, Materials Research Laboratory, University
of California, Santa Barbara, California 93106, United States
| | - Craig J. Hawker
- Materials Department, Department of Chemistry and Biochemistry, Department of Mechanical
Engineering, Materials Research Laboratory, University
of California, Santa Barbara, California 93106, United States
| | - H. Tom Soh
- Materials Department, Department of Chemistry and Biochemistry, Department of Mechanical
Engineering, Materials Research Laboratory, University
of California, Santa Barbara, California 93106, United States
| |
Collapse
|
1526
|
Black KA, Priftis D, Perry SL, Yip J, Byun WY, Tirrell M. Protein Encapsulation via Polypeptide Complex Coacervation. ACS Macro Lett 2014; 3:1088-1091. [PMID: 35610798 DOI: 10.1021/mz500529v] [Citation(s) in RCA: 214] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Proteins have gained increasing success as therapeutic agents; however, challenges exist in effective and efficient delivery. In this work, we present a simple and versatile method for encapsulating proteins via complex coacervation with oppositely charged polypeptides, poly(l-lysine) (PLys) and poly(d/l-glutamic acid) (PGlu). A model protein system, bovine serum albumin (BSA), was incorporated efficiently into coacervate droplets via electrostatic interaction up to a maximum loading of one BSA per PLys/PGlu pair and could be released under conditions of decreasing pH. Additionally, encapsulation within complex coacervates did not alter the secondary structure of the protein. Lastly the complex coacervate system was shown to be biocompatible and interact well with cells in vitro. A simple, modular system for encapsulation such as the one presented here may be useful in a range of drug delivery applications.
Collapse
Affiliation(s)
- Katie A. Black
- Department
of Bioengineering, University of California Berkeley, Berkeley, California 94720 United States
- UC Berkeley—UCSF
Graduate Program in Bioengineering, Berkeley, California 94720 United States
| | - Dimitrios Priftis
- Institute
for Molecular Engineering, University of Chicago, Chicago, Illinois 60637 United States
| | - Sarah L. Perry
- Institute
for Molecular Engineering, University of Chicago, Chicago, Illinois 60637 United States
| | - Jeremy Yip
- Department
of Bioengineering, University of California Berkeley, Berkeley, California 94720 United States
| | - William Y. Byun
- Department
of Bioengineering, University of California Berkeley, Berkeley, California 94720 United States
| | - Matthew Tirrell
- Department
of Bioengineering, University of California Berkeley, Berkeley, California 94720 United States
- Institute
for Molecular Engineering, University of Chicago, Chicago, Illinois 60637 United States
- Argonne National
Laboratory, Argonne, Illinois 60439 United States
| |
Collapse
|
1527
|
Koro C, Bielecka E, Dahl-Knudsen A, Enghild JJ, Scavenius C, Brun JG, Binder V, Hellvard A, Bergum B, Jonsson R, Potempa J, Blom AM, Mydel P. Carbamylation of immunoglobulin abrogates activation of the classical complement pathway. Eur J Immunol 2014; 44:3403-12. [PMID: 25130613 PMCID: PMC4232992 DOI: 10.1002/eji.201444869] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Revised: 07/22/2014] [Accepted: 08/12/2014] [Indexed: 01/23/2023]
Abstract
Post-translational modifications of proteins significantly affect their structure and function. The carbamylation of positively charged lysine residues to form neutral homoitrulline occurs primarily under inflammatory conditions through myeloperoxidase-dependent cyanate (CNO-) formation. We analyzed the pattern of human IgG1 carbamylation under inflammatory conditions and the effects that this modification has on the ability of antibodies to trigger complement activation via the classical pathway. We found that the lysine residues of IgG1 are rapidly modified after brief exposure to CNO- . Interestingly, modifications were not random, but instead limited to only few lysines within the hinge area and the N-terminal fragment of the CH2 domain. A complement activation assay combined with mass spectrometry analysis revealed a highly significant inverse correlation between carbamylation of several key lysine residues within the hinge region and N-terminus of the CH2 domain and the proper binding of C1q to human IgG1 followed by subsequent complement activation. This severely hindered complement-dependent cytotoxicity of therapeutic IgG1 . The reaction can apparently occur in vivo, as we found carbamylated antibodies in synovial fluid from rheumatoid arthritis patients. Taken together, our data suggest that carbamylation has a profound impact on the complement-activating ability of IgG1 and reveals a pivotal role for previously uncharacterized lysine residues in this process.
Collapse
Affiliation(s)
- Catalin Koro
- Broegelmann Research Laboratory, Department of Clinical Science, University of Bergen, Bergen, Norway
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
1528
|
Schubert I, Saul D, Nowecki S, Mackensen A, Fey GH, Oduncu FS. A dual-targeting triplebody mediates preferential redirected lysis of antigen double-positive over single-positive leukemic cells. MAbs 2014; 6:286-96. [PMID: 24135631 DOI: 10.4161/mabs.26768] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The single-chain triplebody HLA-ds16-hu19 consists of three single-chain Fv (scFv) antibody fragments connected in a single polypeptide chain. This protein with dual-targeting capacity mediated preferential lysis of antigen double positive(dp) over single-positive (sp) leukemic cells by recruitment of natural killer (NK) cells as effectors. The two distal scFv modules were specific for the histocompatibility protein HLA-DR and the lymphoid antigen CD19, the central one for the Fc gamma receptor CD16. In antibody-dependent cellular cytotoxicity (ADCC) experiments with a mixture of leukemic target cells comprising both HLA-DR sp HuT-78 or Kasumi-1 cells and (HLA-DR plus CD19) dp SEM cells, the triplebody mediated preferential lysis of the dp cells even when the sp cells were present in ≤ 20-fold numerical excess.The triplebody promoted equal lysis of SEM cells at 2.5-fold and 19.5-fold lower concentrations than the parental antibodies specific for HLA-DR and CD19, respectively. Finally, the triplebody also eliminated primary leukemic cells at lower concentrations than an equimolar mixture of bispecific single-chain Fv fragments (bsscFvs) separately addressing each target antigen (hu19-ds16 and HLA-ds16). The increased selectivity of targeting and the preferential lysis of dp over sp cells achieved by dual-targeting open attractive new perspectives for the use of dual-targeting agents in cancer therapy.
Collapse
|
1529
|
Furlan SN, Mandraju R, Brewer T, Roybal K, Troutman TD, Hu W, Palm NW, Unni A, Pasare C. Enhancement of anti-tumor CD8 immunity by IgG1-mediated targeting of Fc receptors. MAbs 2014; 6:108-18. [PMID: 24284965 DOI: 10.4161/mabs.27052] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Dendritic cells (DCs) function as professional antigen presenting cells and are critical for linking innate immune responses to the induction of adaptive immunity. Many current cancer DC vaccine strategies rely on differentiating DCs, feeding them tumor antigens ex vivo, and infusing them into patients. Importantly, this strategy relies on prior knowledge of suitable “tumor-specific” antigens to prime an effective anti-tumor response. DCs express a variety of receptors specific for the Fc region of immunoglobulins, and antigen uptake via Fc receptors is highly efficient and facilitates antigen presentation to T cells. Therefore, we hypothesized that expression of the mouse IgG1 Fc region on the surface of tumors would enhance tumor cell uptake by DCs and other myeloid cells and promote the induction of anti-tumor T cell responses. To test this, we engineered a murine lymphoma cell line expressing surface IgG1 Fc and discovered that such tumor cells were taken up rapidly by DCs, leading to enhanced cross-presentation of tumor-derived antigen to CD8+ T cells. IgG1-Fc tumors failed to grow in vivo and prophylactic vaccination of mice with IgG1-Fc tumors resulted in rejection of unmanipulated tumor cells. Furthermore, IgG1-Fc tumor cells were able to slow the growth of an unmanipulated primary tumor when used as a therapeutic tumor vaccine. Our data demonstrate that engagement of Fc receptors by tumors expressing the Fc region of IgG1 is a viable strategy to induce efficient and protective anti-tumor CD8+ T cell responses without prior knowledge of tumor-specific antigens.
Collapse
|
1530
|
Bondza S, Stenberg J, Nestor M, Andersson K, Björkelund H. Conjugation Effects on Antibody–Drug Conjugates: Evaluation of Interaction Kinetics in Real Time on Living Cells. Mol Pharm 2014; 11:4154-63. [DOI: 10.1021/mp500379d] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Sina Bondza
- Section
of Biomedical Radiation Sciences, Department of Radiology, Oncology
and Radiation Science, Rudbeck Laboratory, Uppsala University, SE-751
85 Uppsala, Sweden
| | - Jonas Stenberg
- Section
of Biomedical Radiation Sciences, Department of Radiology, Oncology
and Radiation Science, Rudbeck Laboratory, Uppsala University, SE-751
85 Uppsala, Sweden
- Ridgeview Instruments AB, Vänge, Sweden
| | - Marika Nestor
- Section
of Biomedical Radiation Sciences, Department of Radiology, Oncology
and Radiation Science, Rudbeck Laboratory, Uppsala University, SE-751
85 Uppsala, Sweden
- Section
of Otolaryngology and Head and Neck Surgery, Department of Surgical
Sciences, Uppsala University, SE-751 85 Uppsala, Sweden
| | - Karl Andersson
- Section
of Biomedical Radiation Sciences, Department of Radiology, Oncology
and Radiation Science, Rudbeck Laboratory, Uppsala University, SE-751
85 Uppsala, Sweden
- Ridgeview Instruments AB, Vänge, Sweden
| | - Hanna Björkelund
- Section
of Biomedical Radiation Sciences, Department of Radiology, Oncology
and Radiation Science, Rudbeck Laboratory, Uppsala University, SE-751
85 Uppsala, Sweden
- Ridgeview Instruments AB, Vänge, Sweden
| |
Collapse
|
1531
|
Fusion of CTLA-4 with HPV16 E7 and E6 enhanced the potency of therapeutic HPV DNA vaccine. PLoS One 2014; 9:e108892. [PMID: 25265018 PMCID: PMC4181872 DOI: 10.1371/journal.pone.0108892] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2014] [Accepted: 08/28/2014] [Indexed: 11/29/2022] Open
Abstract
Preventive anti-HPV vaccines are effective against HPV infection but not against existing HPV-associated diseases, including cervical cancer and other malignant diseases. Therefore, the development of therapeutic vaccines is urgently needed. To improve anti-tumor effects of therapeutic vaccine, we fused cytotoxic T-lymphocyte antigen 4 (CTLA-4) with HPV16 E7 and E6 as a fusion therapeutic DNA vaccine (pCTLA4-E7E6). pCTLA4-E7E6 induced significantly higher anti-E7E6 specific antibodies and relatively stronger specific CTL responses than the nonfusion DNA vaccine pE7E6 in C57BL/6 mice bearing with TC-1 tumors. pCTLA4-E7E6 showed relatively stronger anti-tumor effects than pE7E6 in therapeutic immunization. These results suggest that fusing CTLA-4 with E7E6 is a useful strategy to develop therapeutic HPV DNA vaccines. In addition, fusing the C-terminal of E7 with the N-terminal of E6 impaired the functions of both E7 and E6.
Collapse
|
1532
|
The future of glioblastoma therapy: synergism of standard of care and immunotherapy. Cancers (Basel) 2014; 6:1953-85. [PMID: 25268164 PMCID: PMC4276952 DOI: 10.3390/cancers6041953] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Revised: 08/05/2014] [Accepted: 09/03/2014] [Indexed: 12/18/2022] Open
Abstract
The current standard of care for glioblastoma (GBM) is maximal surgical resection with adjuvant radiotherapy and temozolomide (TMZ). As the 5-year survival with GBM remains at a dismal <10%, novel therapies are needed. Immunotherapies such as the dendritic cell (DC) vaccine, heat shock protein vaccines, and epidermal growth factor receptor (EGFRvIII) vaccines have shown encouraging results in clinical trials, and have demonstrated synergistic effects with conventional therapeutics resulting in ongoing phase III trials. Chemoradiation has been shown to have synergistic effects when used in combination with immunotherapy. Cytotoxic ionizing radiation is known to trigger pro-inflammatory signaling cascades and immune activation secondary to cell death, which can then be exploited by immunotherapies. The future of GBM therapeutics will involve finding the place for immunotherapy in the current treatment regimen with a focus on developing strategies. Here, we review current GBM therapy and the evidence for combination of immune checkpoint inhibitors, DC and peptide vaccines with the current standard of care.
Collapse
|
1533
|
Sherbenou DW, Behrens CR, Su Y, Wolf JL, Martin TG, Liu B. The development of potential antibody-based therapies for myeloma. Blood Rev 2014; 29:81-91. [PMID: 25294123 DOI: 10.1016/j.blre.2014.09.011] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Revised: 09/16/2014] [Accepted: 09/19/2014] [Indexed: 01/27/2023]
Abstract
With optimal target antigen selection antibody-based therapeutics can be very effective agents for hematologic malignancies, but none have yet been approved for myeloma. Rituximab and brentuximab vedotin are examples of success for the naked antibody and antibody-drug conjugate classes, respectively. Plasma cell myeloma is an attractive disease for antibody-based targeting due to target cell accessibility and the complementary mechanism of action with approved therapies. Initial antibodies tested in myeloma were disappointing. However, recent results from targeting well-characterized antigens have been more encouraging. In particular, the CD38 and CD138 targeted therapies are showing single-agent activity in early phase clinical trials. Here we will review the development pipeline for naked antibodies and antibody-drug conjugates for myeloma. There is clear clinical need for new treatments, as myeloma inevitably becomes refractory to standard agents. The full impact is yet to be established, but we are optimistic that the first FDA-approved antibody therapeutic(s) for this disease will emerge in the near future.
Collapse
Affiliation(s)
- Daniel W Sherbenou
- Department of Medicine, University of California San Francisco, San Francisco, CA 94110, USA; Department of UCSF Helen Diller Comprehensive Cancer Center, University of California San Francisco, San Francisco, CA 94110, USA
| | - Christopher R Behrens
- Department of Anesthesia, University of California San Francisco, San Francisco, CA 94110, USA
| | - Yang Su
- Department of Anesthesia, University of California San Francisco, San Francisco, CA 94110, USA
| | - Jeffrey L Wolf
- Department of Medicine, University of California San Francisco, San Francisco, CA 94110, USA; Department of UCSF Helen Diller Comprehensive Cancer Center, University of California San Francisco, San Francisco, CA 94110, USA
| | - Thomas G Martin
- Department of Medicine, University of California San Francisco, San Francisco, CA 94110, USA; Department of UCSF Helen Diller Comprehensive Cancer Center, University of California San Francisco, San Francisco, CA 94110, USA
| | - Bin Liu
- Department of Anesthesia, University of California San Francisco, San Francisco, CA 94110, USA; Department of UCSF Helen Diller Comprehensive Cancer Center, University of California San Francisco, San Francisco, CA 94110, USA
| |
Collapse
|
1534
|
Pillow TH, Tien J, Parsons-Reponte KL, Bhakta S, Li H, Staben LR, Li G, Chuh J, Fourie-O'Donohue A, Darwish M, Yip V, Liu L, Leipold DD, Su D, Wu E, Spencer SD, Shen BQ, Xu K, Kozak KR, Raab H, Vandlen R, Lewis Phillips GD, Scheller RH, Polakis P, Sliwkowski MX, Flygare JA, Junutula JR. Site-specific trastuzumab maytansinoid antibody-drug conjugates with improved therapeutic activity through linker and antibody engineering. J Med Chem 2014; 57:7890-9. [PMID: 25191794 DOI: 10.1021/jm500552c] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Antibody-drug conjugates (ADCs) have a significant impact toward the treatment of cancer, as evidenced by the clinical activity of the recently approved ADCs, brentuximab vedotin for Hodgkin lymphoma and ado-trastuzumab emtansine (trastuzumab-MCC-DM1) for metastatic HER2+ breast cancer. DM1 is an analog of the natural product maytansine, a microtubule inhibitor that by itself has limited clinical activity and high systemic toxicity. However, by conjugation of DM1 to trastuzumab, the safety was improved and clinical activity was demonstrated. Here, we report that through chemical modification of the linker-drug and antibody engineering, the therapeutic activity of trastuzumab maytansinoid ADCs can be further improved. These improvements include eliminating DM1 release in the plasma and increasing the drug load by engineering four cysteine residues into the antibody. The chemical synthesis of highly stable linker-drugs and the modification of cysteine residues of engineered site-specific antibodies resulted in a homogeneous ADC with increased therapeutic activity compared to the clinically approved ADC, trastuzumab-MCC-DM1.
Collapse
Affiliation(s)
- Thomas H Pillow
- Genentech, Inc. , 1 DNA Way, South San Francisco, California 94080, United States
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
1535
|
Guo J, Cahill MR, McKenna SL, O'Driscoll CM. Biomimetic nanoparticles for siRNA delivery in the treatment of leukaemia. Biotechnol Adv 2014; 32:1396-409. [PMID: 25218571 DOI: 10.1016/j.biotechadv.2014.08.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Revised: 08/26/2014] [Accepted: 08/30/2014] [Indexed: 12/13/2022]
Abstract
Leukaemia is a bone marrow cancer occurring in acute and chronic subtypes. Acute leukaemia is a rapidly fatal cancer potentially causing death within a few weeks, if untreated. Leukaemia arises as a result of disruption to haematopoietic precursors, caused either by acquired gene fusions, gene mutations or inappropriate expression of the relevant oncogenes. Current treatment options have made significant progress, but the 5 year survival for acute leukaemia remains under 10% in elderly patients, and less than 50% for some types of acute leukaemia in younger adults. For chronic leukaemias longer survival is generally expected and for chronic myeloid leukaemia patients on tyrosine kinase inhibitors the median survival is not yet reached and is expected to exceed 10 years. Chemotherapy and haematopoietic stem cell transplantation (HSCT) for acute leukaemia provide the mainstay of therapy for patients under 65 and both carry significant morbidity and mortality. Alternative and superior therapeutic strategies for acute leukaemias are urgently required. Recent molecular-based knowledge of recurring chromosome rearrangements, in particular translocations and inversions, has resulted in significant advances in understanding the molecular pathogenesis of leukaemia. Identification of a number of unique fusion genes has facilitated the development of highly specific small interfering RNAs (siRNA). Although delivery of siRNA using multifunctional nanoparticles has been investigated to treat solid cancers, the application of this approach to blood cancers is at an early stage. This review describes current treatments for leukaemia and highlights the potential of leukaemic fusion genes as therapeutic targets for RNA interference (RNAi). In addition, the design of biomimetic nanoparticles which are capable of responding to the physiological environment of leukaemia and their potential to advance RNAi therapeutics to the clinic will be critically evaluated.
Collapse
Affiliation(s)
- Jianfeng Guo
- Pharmacodelivery Group, School of Pharmacy, University College Cork, Ireland
| | - Mary R Cahill
- Department of Haematology, Cork University Hospital, Ireland
| | | | | |
Collapse
|
1536
|
Activation of antitumor immune responses by Ganoderma formosanum polysaccharides in tumor-bearing mice. Appl Microbiol Biotechnol 2014; 98:9389-98. [DOI: 10.1007/s00253-014-6027-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2014] [Revised: 07/15/2014] [Accepted: 08/10/2014] [Indexed: 01/09/2023]
|
1537
|
Gesheva V, Chausheva S, Mihaylova N, Manoylov I, Doumanova L, Idakieva K, Tchorbanov A. Anti-cancer properties of gastropodan hemocyanins in murine model of colon carcinoma. BMC Immunol 2014; 15:34. [PMID: 25168124 PMCID: PMC4164791 DOI: 10.1186/s12865-014-0034-3] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Accepted: 08/21/2014] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Various immunotherapeutic approaches have been used for the treatment of cancer. A number of natural compounds are designed to repair, stimulate, or enhance the immune system response. Among them are the hemocyanins (Hcs) - extracellular copper proteins isolated from different arthropod and mollusc species. Hcs are oxygen transporter molecules and normally are freely dissolved in the hemolymph of these animals. Hemocyanins are very promising class of anti-cancer therapeutics due to their immunogenic properties and the absence of toxicity or side effects. KLH (Megathura crenulata hemocyanin) is the most studied molecule of this group setting a standard for natural carrier protein for small molecules and has been used in anti-tumor clinical trials. RESULTS The Hcs isolated from marine snail Rapana thomasiana (RtH) and the terrestrial snail Helix pomatia (HpH) express strong in vivo anti-cancer and anti-proliferative effects in the developed by us murine model of colon carcinoma. The immunization with RtH and HpH prolonged the survival of treated animals, improve humoral anti-cancer response and moderate the manifestation of C-26 carcinoma symptoms as tumor growth, splenomegaly and lung metastasis appearance. CONCLUSION Hemocyanins are used so far for therapy of superficial bladder cancer and murine melanoma models. Our findings demonstrate a potential anti-cancer effect of hemocyanins on a murine model of colon carcinoma suggesting their use for immunotherapy of different types of cancer.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Andrey Tchorbanov
- The Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, Acad, G, Bonchev Str, 26, Sofia, 1113, Bulgaria.
| |
Collapse
|
1538
|
Ackerman SE, Currier NV, Bergen JM, Cochran JR. Cystine-knot peptides: emerging tools for cancer imaging and therapy. Expert Rev Proteomics 2014; 11:561-72. [DOI: 10.1586/14789450.2014.932251] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
1539
|
Toyokuni S. Iron and thiols as two major players in carcinogenesis: friends or foes? Front Pharmacol 2014; 5:200. [PMID: 25221514 PMCID: PMC4147246 DOI: 10.3389/fphar.2014.00200] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2014] [Accepted: 08/12/2014] [Indexed: 12/14/2022] Open
Abstract
Iron is the most abundant metal in the human body and mainly works as a cofactor for proteins such as hemoglobin and various enzymes. No independent life forms on earth can survive without iron. However, excess iron is intimately associated with carcinogenesis by increasing oxidative stress via its catalytic activity to generate hydroxyl radicals. Biomolecules with redox-active sulfhydryl function(s) (thiol compounds) are necessary for the maintenance of mildly reductive cellular environments to counteract oxidative stress, and for the execution of redox reactions for metabolism and detoxification. Involvement of glutathione S-transferase and thioredoxin has long attracted the attention of cancer researchers. Here, I update recent findings on the involvement of iron and thiol compounds during carcinogenesis and in cancer cells. It is now recognized that the cystine/glutamate transporter (antiporter) is intimately associated with ferroptosis, an iron-dependent, non-apoptotic form of cell death, observed in cancer cells, and also with cancer stem cells; the former with transporter blockage but the latter with its stabilization. Excess iron in the presence of oxygen appears the most common known mutagen. Ironically, the persistent activation of antioxidant systems via genetic alterations in Nrf2 and Keap1 also contributes to carcinogenesis. Therefore, it is difficult to conclude the role of iron and thiol compounds as friends or foes, which depends on the quantity/distribution and induction/flexibility, respectively. Avoiding further mutation would be the most helpful strategy for cancer prevention, and myriad of efforts are being made to sort out the weaknesses of cancer cells.
Collapse
Affiliation(s)
- Shinya Toyokuni
- Department of Pathology and Biological Responses, Nagoya University Graduate School of Medicine Nagoya, Japan
| |
Collapse
|
1540
|
|
1541
|
Hamakubo T, Kusano-Arai O, Iwanari H. Generation of antibodies against membrane proteins. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2014; 1844:1920-1924. [PMID: 25135856 DOI: 10.1016/j.bbapap.2014.08.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2014] [Revised: 07/30/2014] [Accepted: 08/12/2014] [Indexed: 12/12/2022]
Abstract
The monoclonal antibody has become an important therapeutic in the treatment of both hematological malignancies and solid tumors. The recent success of antibody-drug conjugates (ADCs) has broadened the extent of the potential target molecules in cancer immunotherapy. As a result, even molecules of low abundance have become targets for cytotoxic reagents. The multi-pass membrane proteins are an emerging target for the next generation antibody therapeutics. One outstanding challenge is the difficulty in preparing a sufficient amount of these membrane proteins so as to be able to generate the functional antibody. We have pursued the expression of various membrane proteins on the baculovirus particle and the utilization of displayed protein for immunization. The strong antigenicity of the virus acts either as a friend or foe in the making of an efficient antibody against an immunologically tolerant antigen. This article is part of a Special Issue entitled: Recent advances in molecular engineering of antibody.
Collapse
Affiliation(s)
- Takao Hamakubo
- Department of Quantitative Biology and Medicine, Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo 153-8904, Japan.
| | - Osamu Kusano-Arai
- Department of Quantitative Biology and Medicine, Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo 153-8904, Japan; Institute of Immunology Co. Ltd, .1-1-10 Koraku, Bunkyo, Tokyo 112-0004, Japan
| | - Hiroko Iwanari
- Department of Quantitative Biology and Medicine, Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo 153-8904, Japan
| |
Collapse
|
1542
|
Murine carcinoma expressing carcinoembryonic antigen-like protein is restricted by antibody against neem leaf glycoprotein. Immunol Lett 2014; 162:132-9. [PMID: 25128841 DOI: 10.1016/j.imlet.2014.08.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Revised: 07/31/2014] [Accepted: 08/04/2014] [Indexed: 01/21/2023]
Abstract
We have generated a polyclonal antibody against a novel immunomodulator, neem leaf glycoprotein (NLGP) that can react to a specific 47 kDa subunit of NLGP. Generated anti-NLGP antibody (primarily IgG2a) was tested for its anti-tumor activity in murine carcinoma (EC, CT-26), sarcoma (S180) and melanoma (B16Mel) tumor models. Surprisingly, tumor growth restriction was only observed in CT-26 carcinoma models, without any alteration in other tumor systems. Comparative examination of antigenicity between four different tumor models revealed high expression of CEA-like protein on the surface of CT-26 tumors. Subsequent examination of the cross-reactivity of anti-NLGP antibody with purified or cell bound CEA revealed prominent recognition of CEA by anti-NLGP antibody, as detected by ELISA, Western Blotting and immunohistochemistry. This recognition seems to be responsible for anti-tumor function of anti-NLGP antibody only on CEA-like protein expressing CT-26 tumor models, as confirmed by ADCC reaction in CEA(+) tumor systems where dependency to anti-NLGP antibody is equivalent to anti-CEA antibody. Obtained result with enormous therapeutic potential for CEA(+) tumors may be explained in view of the epitope spreading concept, however, further investigation is crucial.
Collapse
|
1543
|
Avvakumova S, Galbiati E, Pandolfi L, Mazzucchelli S, Cassani M, Gori A, Longhi R, Prosperi D. Development of U11-Functionalized Gold Nanoparticles for Selective Targeting of Urokinase Plasminogen Activator Receptor-Positive Breast Cancer Cells. Bioconjug Chem 2014; 25:1381-6. [DOI: 10.1021/bc500202b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Svetlana Avvakumova
- NanoBioLab,
Dipartimento di Biotecnologie e Bioscienze, Università di Milano-Bicocca, Piazza della Scienza 2, 20126 Milano, Italy
| | - Elisabetta Galbiati
- NanoBioLab,
Dipartimento di Biotecnologie e Bioscienze, Università di Milano-Bicocca, Piazza della Scienza 2, 20126 Milano, Italy
| | - Laura Pandolfi
- NanoBioLab,
Dipartimento di Biotecnologie e Bioscienze, Università di Milano-Bicocca, Piazza della Scienza 2, 20126 Milano, Italy
| | - Serena Mazzucchelli
- Dipartimento
di Scienze Biomediche e Cliniche “Luigi Sacco”, Università di Milano, Via G. B. Grassi 74, 20157 Milano, Italy
| | - Marco Cassani
- NanoBioLab,
Dipartimento di Biotecnologie e Bioscienze, Università di Milano-Bicocca, Piazza della Scienza 2, 20126 Milano, Italy
| | | | | | - Davide Prosperi
- NanoBioLab,
Dipartimento di Biotecnologie e Bioscienze, Università di Milano-Bicocca, Piazza della Scienza 2, 20126 Milano, Italy
| |
Collapse
|
1544
|
Mansur AAP, Mansur HS, Soriano-Araújo A, Lobato ZIP. Fluorescent nanohybrids based on quantum dot-chitosan-antibody as potential cancer biomarkers. ACS APPLIED MATERIALS & INTERFACES 2014; 6:11403-12. [PMID: 24956063 DOI: 10.1021/am5019989] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Despite undeniable advances in medicine in recent decades, cancer is still one of the main challenges faced by scientists and professionals in the health sciences as it remains one of the world's most devastating diseases with millions of fatalities and new cases every year. Thus, in this work, we endeavored to synthesize and characterize novel multifunctional immunoconjugates composed of quantum dots (QDs) as the fluorescent inorganic core and antibody-modified polysaccharide as the organic shell, focusing on their potential applications for in vitro diagnosis of non-Hodgkin lymphoma (NHL) cancer tumors. Chitosan was covalently conjugated with anti-CD20 polyclonal antibody (pAbCD20) via formation of amide bonds between amines and carboxyl groups. In the sequence, these biopolymer-antibody immunoconjugates were utilized as direct capping ligands for biofunctionalization of CdS QDs (CdS/chitosan-pAbCD20) using a single-step process in aqueous medium at room temperature. The nanostructures were characterized by UV-vis spectroscopy, photoluminescence spectroscopy (PL), FTIR, and transmission electron microscopy (TEM) with selected area electron diffraction. The TEM images associated with the UV-vis optical absorption results indicated formation of ultrasmall nanocrystals with average diameters in the range of 2.5-3.0 nm. Also, the PL results demonstrated that the immunoconjugates exhibited "green" fluorescent activity under ultraviolet excitation. Moreover, using in vitro laser light scattering immunoassay (LIA), the QDs/immunoconjugates have shown binding affinity against antigen CD20 (aCD20) expressed by lymphocyte-B cancer cells. In summary, innovative fluorescent nanoimmunoconjugate templates were developed with promising perspectives to be used in the future for detection and imaging of cancer tumors.
Collapse
Affiliation(s)
- Alexandra A P Mansur
- Center of Nanoscience, Nanotechnology, and Innovation-CeNano2I, School of Engineering, Department of Metallurgical and Materials Engineering and ‡Department of Preventive Veterinary Medicine, Veterinary School, Federal University of Minas Gerais , Av. Antônio Carlos, 6627, 31270-901, BeloHorizonte/MG, Brazil
| | | | | | | |
Collapse
|
1545
|
Effects and mechanisms of anti-CD44 monoclonal antibody A3D8 on proliferation and apoptosis of sphere-forming cells with stemness from human ovarian cancer. Int J Gynecol Cancer 2014; 23:1367-75. [PMID: 24257550 DOI: 10.1097/igc.0b013e3182a1d023] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
OBJECTIVE CD44(+) human ovarian cancer stem cells (CSCs) and CSC-like cells have been identified and characterized. Compelling evidence has revealed that CD44 is involved in the occurrence and development of cancers. Our previous study showed that sphere-forming cells (SFCs) from the human ovarian cancer cell line SKOV-3 had CSC capacity. Therefore, in the present study, we aimed to investigate the effects and mechanisms of the anti-CD44 monoclonal antibody A3D8 on the proliferation and apoptosis of SFCs to explore novel strategies for the treatment of ovarian cancer. METHODS We investigated the effects and mechanisms of A3D8 on the proliferation and apoptosis of SFCs using the MTS assay, cell cycle analysis, an annexin V-fluorescein isothiocyanate/propidium iodide kit, Rh123 apoptosis detection kit, real-time reverse transcription polymerase chain reaction and Western blotting. RESULTS After CD44 ligation by A3D8, SFC cell proliferation was notably attenuated, cell cycle progression was arrested in the S phase, and apoptosis was significantly increased. The effect of A3D8 was enhanced in a dose- and time-dependent manner, and the effect of apoptosis induction by DDP was enhanced by combination treatment with A3D8. Furthermore, the messenger RNA expression levels of p21 and caspase-3 were up-regulated, whereas those of CDK2, cyclinA, and Bcl-2 were down-regulated. The protein expression levels of caspase-3 were up-regulated, whereas those of CDK2, cyclinA, and Bcl-2 were down-regulated. CONCLUSIONS Our findings indicate that anti-CD44 monoclonal antibodies may be a potential strategy for the treatment of human ovarian cancer after conventional therapy via inhibition of growth and the promotion of apoptosis in SFCs with stemness.
Collapse
|
1546
|
Autonomous growth and increased cytotoxicity of natural killer cells expressing membrane-bound interleukin-15. Blood 2014; 124:1081-8. [PMID: 25006133 DOI: 10.1182/blood-2014-02-556837] [Citation(s) in RCA: 113] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Natural killer (NK) cell survival and, hence, cytotoxicity requires cytokine support. We determined whether expression of interleukin-15 (IL-15) in a nonsecretory, membrane-bound form could sustain NK cell growth. We linked the human IL15 gene to that encoding CD8α transmembrane domain (mbIL15). After retroviral transduction, human NK cells expressed mbIL15 on the cell surface; IL-15 secretion was negligible. Survival of mbIL15-NK cells without interleukin-2 (IL-2) after 7-day culture was vastly superior to that of mock-transduced NK cells (P < .001, n = 15) and of NK cells expressing nonmembrane-bound IL-15 (P = .025, n = 9); viable mbIL15-NK cells were detectable for up to 2 months. In immunodeficient mice, mbIL15-NK cells expanded without IL-2 and were detectable in all tissues examined (except brain) in much higher numbers than mock-transduced NK cells (P < .001). Expansion further increased with IL-2. The primary mechanism of mbIL15 stimulation was autocrine; it activated IL-15 signaling and antiapoptotic signaling. NK cells expressing mbIL15 had higher cytotoxicity against leukemia, lymphoma, and solid tumor cells in vitro and against leukemia and sarcoma cells in xenograft models. Thus, mbIL15 confers independent growth to NK cells and enhances their antitumor capacity. Infusion of mbIL15-NK cells would allow NK cell therapy without the potential adverse effects of cytokine administration.
Collapse
|
1547
|
de Zwart V, Gouw SC, Meyer-Wentrup FAG. Antibody therapies for lymphoma in children. THE COCHRANE DATABASE OF SYSTEMATIC REVIEWS 2014. [DOI: 10.1002/14651858.cd011181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
1548
|
The integration of ligand binding and LC-MS-based assays into bioanalytical strategies for protein analysis. Bioanalysis 2014; 6:1827-41. [DOI: 10.4155/bio.14.128] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Both LBAs and LC–MS-based assays are reviewed and summarized for applications in quantitative protein analysis. A strategy for platform selection is proposed based on several factors that contribute to the complexities of bioanalysis of biologics. Protein types, multiple co-existing forms, post-translational modifications, and affinities to ADA, targets, and endogenous proteins need to be considered when selecting the most appropriate platform. Other factors, such as intended use of data, assay sensitivity, available reagents, and multiple analytes also impact on the choice of bioanalytical platform. At BMS, strategies for the seamless integration of both platforms are being implemented to provide not only PK/PD data of the molecules but also useful information of the amino acid structure and functional relationship of the proteins.
Collapse
|
1549
|
Martin V, Corso S, Comoglio PM, Giordano S. Increase of MET gene copy number confers resistance to a monovalent MET antibody and establishes drug dependence. Mol Oncol 2014; 8:1561-74. [PMID: 25011627 DOI: 10.1016/j.molonc.2014.06.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Revised: 06/16/2014] [Accepted: 06/16/2014] [Indexed: 12/14/2022] Open
Abstract
The relevant role in cancer played by the tyrosine kinase receptor encoded by the MET oncogene led to the development of specific inhibitors, some of which are now in advanced phases of clinical trials. Previous experience has shown that the main limit to the efficacy of most targeted treatments is the advent of resistance. Mechanisms underlying resistance to MET-specific small tyrosine kinase inhibitors (TKIs) have been already described, while nothing is known about resistance to MET monoclonal antibodies, nor about bypassing resistance to chemical TKIs by antibodies or vice-versa. EBC1 lung cancer cells are MET-addicted as a consequence of gene amplification and thus sensitive to MET inhibitors, including the monovalent form of a MET monoclonal antibody (MV-DN30). We generated cells resistant to this antibody and found that resistance was due to a further increase of gene copy number and a dramatic overexpression of the MET receptor. Such an excess of expression saturated the 'shedding' activity of MV-DN30, and prevented both the efficient down-regulation of the MET receptor from the surface and the inhibition of the ensuing constitutive activation. Notably, antibody-resistant cells remained MET-'addicted' and were still sensitive to MET TKIs. Moreover, antibody-resistant cells became 'drug-dependent', since the removal of MV-DN30 led them to death due to excess of signal. In the mirror experiment, cells made resistant to MET-specific TKIs were still sensitive to treatment with the antibody MV-DN30. These findings suggest that a discontinuous, combined treatment by antibodies and chemical kinase inhibitors may increase the clinical response and bypass resistance to anti-MET targeted therapies.
Collapse
Affiliation(s)
- Valentina Martin
- University of Torino, Department of Oncology, S.P. 142, Km 3.95, 10060 Candiolo, Torino, Italy; Candiolo Cancer Institute-FPO, IRCCS, S.P. 142, Km 3.95, 10060 Candiolo, Torino, Italy
| | - Simona Corso
- University of Torino, Department of Oncology, S.P. 142, Km 3.95, 10060 Candiolo, Torino, Italy; Candiolo Cancer Institute-FPO, IRCCS, S.P. 142, Km 3.95, 10060 Candiolo, Torino, Italy.
| | - Paolo M Comoglio
- University of Torino, Department of Oncology, S.P. 142, Km 3.95, 10060 Candiolo, Torino, Italy; Candiolo Cancer Institute-FPO, IRCCS, S.P. 142, Km 3.95, 10060 Candiolo, Torino, Italy
| | - Silvia Giordano
- University of Torino, Department of Oncology, S.P. 142, Km 3.95, 10060 Candiolo, Torino, Italy; Candiolo Cancer Institute-FPO, IRCCS, S.P. 142, Km 3.95, 10060 Candiolo, Torino, Italy.
| |
Collapse
|
1550
|
Taylor RP, Lindorfer MA. Analyses of CD20 monoclonal antibody-mediated tumor cell killing mechanisms: rational design of dosing strategies. Mol Pharmacol 2014; 86:485-91. [PMID: 24944188 DOI: 10.1124/mol.114.092684] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Since approval of rituximab for treatment of B cell non-Hodgkin lymphoma, development of monoclonal antibodies (mAbs) for cancer treatment and elucidation of their cytotoxic mechanisms have been subject to intense investigations. Compelling evidence indicates that rituximab and another CD20 mAb, ofatumumab, must use the body's cellular and humoral immune effector functions to kill malignant cells. Other U.S. Food and Drug Administration-approved mAbs, including obinutuzumab, cetuximab, and trastuzumab, require, in part, these effector mechanisms to eliminate tumor cells. Although gram quantities of mAbs can be administered to patients, our investigations of CD20 mAb-based therapies for chronic lymphocytic leukemia (CLL), including correlative measurements in clinical trials and studies with primary cells and cell lines, indicate that effector mechanisms necessary for mAb activity can be saturated or exhausted if tumor burdens are high, thus substantially compromising the efficacy of high-dose mAb therapy. Under these conditions, another reaction (trogocytosis) predominates in which bound CD20 mAb and CD20 are removed from targeted cells by effector cells that express Fcγ receptors, thereby allowing malignant cells to escape unharmed and continue to promote disease pathology. To address this problem, we propose that a low-dose strategy, based on administering 30-50 mg of CD20 mAb three times per week, may be far more effective for CLL than standard dosing because it will minimize effector function saturation and reduce trogocytosis. This approach may have general applicability to other mAbs that use immune effector functions, and could be formulated into a subcutaneous treatment strategy that would be more accessible and possibly more efficacious for patients.
Collapse
Affiliation(s)
- Ronald P Taylor
- Department of Biochemistry and Molecular Genetics, University of Virginia School of Medicine, Charlottesville, Virginia
| | - Margaret A Lindorfer
- Department of Biochemistry and Molecular Genetics, University of Virginia School of Medicine, Charlottesville, Virginia
| |
Collapse
|