151
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Markones M, Drechsler C, Kaiser M, Kalie L, Heerklotz H, Fiedler S. Engineering Asymmetric Lipid Vesicles: Accurate and Convenient Control of the Outer Leaflet Lipid Composition. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:1999-2005. [PMID: 29294294 DOI: 10.1021/acs.langmuir.7b03189] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The asymmetric distribution of lipids between the two bilayer leaflets represents a typical feature of biological membranes. The loss of this asymmetry, for example the exposure of negatively charged lipids on the extracellular membrane leaflet of mammalian cells, is involved in apoptosis and occurs in tumor cells. Thus, the controlled production of asymmetric liposomes helps to better understand such crucial cellular processes. Here, we present an approach that allows us to design asymmetric model-membrane experiments on a rational basis and predict the fraction of exchanged lipid. In addition, we developed a label-free and nondestructive assay to quantify the asymmetric uptake of negatively charged lipids in terms of the zeta potential. This significantly enhances the applicability, impact, and predictive power of model membranes.
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Affiliation(s)
- Marie Markones
- Institute for Pharmaceutical Sciences, University of Freiburg , Hermann-Herder-Straße 9, Freiburg im Breisgau 79104, Germany
- BIOSS Centre for Biological Signalling Studies, University of Freiburg , Schänzlestraße 18, Freiburg im Breisgau 79104, Germany
| | - Carina Drechsler
- Institute for Pharmaceutical Sciences, University of Freiburg , Hermann-Herder-Straße 9, Freiburg im Breisgau 79104, Germany
- BIOSS Centre for Biological Signalling Studies, University of Freiburg , Schänzlestraße 18, Freiburg im Breisgau 79104, Germany
| | - Michael Kaiser
- Institute for Pharmaceutical Sciences, University of Freiburg , Hermann-Herder-Straße 9, Freiburg im Breisgau 79104, Germany
| | - Louma Kalie
- Institute for Pharmaceutical Sciences, University of Freiburg , Hermann-Herder-Straße 9, Freiburg im Breisgau 79104, Germany
| | - Heiko Heerklotz
- Institute for Pharmaceutical Sciences, University of Freiburg , Hermann-Herder-Straße 9, Freiburg im Breisgau 79104, Germany
- BIOSS Centre for Biological Signalling Studies, University of Freiburg , Schänzlestraße 18, Freiburg im Breisgau 79104, Germany
- Leslie Dan Faculty of Pharmacy, University of Toronto , 144 College Street, Toronto, Ontario M5S 3M2, Canada
| | - Sebastian Fiedler
- Leslie Dan Faculty of Pharmacy, University of Toronto , 144 College Street, Toronto, Ontario M5S 3M2, Canada
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152
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Ting CH, Chen YC, Wu CJ, Chen JY. Targeting FOSB with a cationic antimicrobial peptide, TP4, for treatment of triple-negative breast cancer. Oncotarget 2018; 7:40329-40347. [PMID: 27248170 PMCID: PMC5130011 DOI: 10.18632/oncotarget.9612] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Accepted: 05/02/2016] [Indexed: 12/31/2022] Open
Abstract
Triple-negative breast cancer (TNBC) currently lacks a suitable therapeutic candidate and is thus difficult to treat. Here, we report that a cationic antimicrobial peptide (CAP), tilapia piscidin 4 (TP4), which was derived from Nile tilapia (Oreochromis niloticus), is selectively toxic to TNBC. TP4 acts by inducing an AP-1 protein called FOSB, the expression of which is negatively associated with the pathological grade of TNBC. We show that TP4 is bound to the mitochondria where it disrupts calcium homeostasis and activates FOSB. FOSB overexpression results in TNBC cell death, whereas inhibition of calcium signaling eliminates FOSB induction and blocks TP4-induced TNBC cell death. Both TP4 and anthracyclines strongly induced FOSB, particularly in TNBC, indicating that FOSB may be suitable as a biomarker of drug responses. This study thus provides a novel therapeutic approach toward TNBC through FOSB induction.
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Affiliation(s)
- Chen-Hung Ting
- Marine Research Station, Institute of Cellular and Organismic Biology, Academia Sinica, Jiaushi, Ilan 262, Taiwan
| | - Yi-Chun Chen
- Marine Research Station, Institute of Cellular and Organismic Biology, Academia Sinica, Jiaushi, Ilan 262, Taiwan
| | - Chang-Jer Wu
- Department of Food Science, National Taiwan Ocean University, Keelung 202, Taiwan
| | - Jyh-Yih Chen
- Marine Research Station, Institute of Cellular and Organismic Biology, Academia Sinica, Jiaushi, Ilan 262, Taiwan
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153
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Rosilio V. How Can Artificial Lipid Models Mimic the Complexity of Molecule–Membrane Interactions? ACTA ACUST UNITED AC 2018. [DOI: 10.1016/bs.abl.2017.12.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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154
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Veloria JR, Chen L, Li L, Breen GAM, Lee J, Goux WJ. Novel cell-penetrating-amyloid peptide conjugates preferentially kill cancer cells. MEDCHEMCOMM 2018; 9:121-130. [PMID: 30108906 PMCID: PMC6071918 DOI: 10.1039/c7md00321h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 09/09/2017] [Indexed: 01/13/2023]
Abstract
The goal of this study was to develop a peptide which could use the toxic effects of amyloid, a substance which is the hallmark of over 25 known human diseases, to selectively kill cancer cells. Here we demonstrate that two separate amyloid-forming hexapeptides, one from the microtubule associated protein Tau involved in formation of paired helical filaments of Alzheimer's disease, and the other an amyloid forming sequence from apolipoprotein A1, when conjugated to a cell penetrating peptide (CPP) sequence, form toxic oligomers which are stable for up to 14 h and able to enter cells by a combination of endocytosis and transduction. The amyloid peptide conjugates showed selective cytotoxicity to breast cancer, neuroblastoma and cervical cancer cells in culture compared to normal cells. Fluorescence imaging experiments showed the CPP-amyloid peptide oligomers formed intracellular fibrous amyloid, visible in the endosomes/lysosomes, cytosol and nucleus with thioflavin S (ThS) staining. Further experiments with rhodamine-conjugated Dextran, propidium iodide (PI), and acridine orange (AO) suggested the mechanism of cell death was the permeability of the lysosomal membrane brought about by the formation of amyloid pores. Cytotoxicity could be abrogated by inhibitors of lysosomal hydrolases, consistent with a model where lysosomal hydrolases leak into the cytosol and induce cytotoxicity in subsequent downstream steps. Taken together, our data suggest that CPP-amyloid peptide conjugates show potential as a new class of anti-cancer peptides (ACPs).
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Affiliation(s)
- John R Veloria
- Department of Biological Sciences , The University of Texas at Dallas , 800 W. Campbell Rd , Richardson , TX 75080 , USA
| | - Luxi Chen
- Department of Chemistry and Biochemistry , The University of Texas at Dallas , 800 W. Campbell Rd , Richardson , TX 75080 , USA .
| | - Lin Li
- Department of Biological Sciences , The University of Texas at Dallas , 800 W. Campbell Rd , Richardson , TX 75080 , USA
| | - Gail A M Breen
- Department of Biological Sciences , The University of Texas at Dallas , 800 W. Campbell Rd , Richardson , TX 75080 , USA
| | - Jiyong Lee
- Department of Chemistry and Biochemistry , The University of Texas at Dallas , 800 W. Campbell Rd , Richardson , TX 75080 , USA .
| | - Warren J Goux
- Department of Chemistry and Biochemistry , The University of Texas at Dallas , 800 W. Campbell Rd , Richardson , TX 75080 , USA .
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155
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Shahali A, Ghanadian M, Jafari SM, Aghaei M. Mitochondrial and caspase pathways are involved in the induction of apoptosis by nardosinen in MCF-7 breast cancer cell line. Res Pharm Sci 2018; 13:12-21. [PMID: 29387107 PMCID: PMC5772077 DOI: 10.4103/1735-5362.220963] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Natural products isolated from plants provide a valuable source for expansion of new anticancer drugs. Nardosinen (4,9-dihydroxy-nardosin-6-en) is a natural sesquiterpene extracted from Juniperus foetidissima. Recently, we have reported the cytotoxic effects of nardosinen in various cancer cells. The aim of the current study was to investigate the anticancer features of nardosinen as well as its possible molecular mechanisms of the nardosinen cytotoxic effect on breast tumor cells. MTT assay showed that nardosinen notably inhibited cell proliferation in a dose-dependent manner in MCF-7 breast cancer cells. The growth inhibitory effect of nardosinen was associated with the induction of cell apoptosis, activation of caspase-6, increase of reactive oxygen species (ROS), and loss of mitochondrial membrane potentials (ΔΨm). Western blot assay following treatment with nardosinen showed that the expression levels of the Bax were significantly up-regulated and the expression levels of the Bcl-2 were significantly down-regulated. Our results finally exhibited that nardosinen induces apoptosis in breast cancer cells via the mitochondrial and caspase pathways.
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Affiliation(s)
- Amirhosein Shahali
- Department of Clinical Biochemistry and Isfahan Pharmaceutical Sciences Research Center, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
| | - Mustafa Ghanadian
- Department of Pharmacognosy and Isfahan Pharmaceutical Sciences Research Center, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
| | - Seyyed Mehdi Jafari
- Biochemistry and Metabolic Disorders Research Center, Golestan University of Medical Sciences, Gorgan, I.R. Iran
| | - Mahmoud Aghaei
- Department of Clinical Biochemistry and Isfahan Pharmaceutical Sciences Research Center, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
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156
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Blanco VM, Chu Z, LaSance K, Gray BD, Pak KY, Rider T, Greis KD, Qi X. Optical and nuclear imaging of glioblastoma with phosphatidylserine-targeted nanovesicles. Oncotarget 2017; 7:32866-75. [PMID: 27096954 PMCID: PMC5078058 DOI: 10.18632/oncotarget.8763] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Accepted: 03/28/2016] [Indexed: 12/15/2022] Open
Abstract
Multimodal tumor imaging with targeted nanoparticles potentially offers both enhanced specificity and sensitivity, leading to more precise cancer diagnosis and monitoring. We describe the synthesis and characterization of phenol-substituted, lipophilic orange and far-red fluorescent dyes and a simple radioiodination procedure to generate a dual (optical and nuclear) imaging probe. MALDI-ToF analyses revealed high iodination efficiency of the lipophilic reporters, achieved by electrophilic aromatic substitution using the chloramide 1,3,4,6-tetrachloro-3α,6α-diphenyl glycoluril (Iodogen) as the oxidizing agent in an organic/aqueous co-solvent mixture. Upon conjugation of iodine-127 or iodine-124-labeled reporters to tumor-targeting SapC-DOPS nanovesicles, optical (fluorescent) and PET imaging was performed in mice bearing intracranial glioblastomas. In addition, tumor vs non-tumor (normal brain) uptake was compared using iodine-125. These data provide proof-of-principle for the potential value of SapC-DOPS for multimodal imaging of glioblastoma, the most aggressive primary brain tumor.
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Affiliation(s)
- Víctor M Blanco
- Division of Hematology-Oncology, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267, USA
| | - Zhengtao Chu
- Division of Hematology-Oncology, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267, USA.,Division of Human Genetics, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio 45229, USA
| | - Kathleen LaSance
- Department of Radiology, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267, USA
| | - Brian D Gray
- Molecular Targeting Technologies, Inc., West Chester, Pennsylvania 19380, USA
| | - Koon Yan Pak
- Molecular Targeting Technologies, Inc., West Chester, Pennsylvania 19380, USA
| | - Therese Rider
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267, USA
| | - Kenneth D Greis
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267, USA
| | - Xiaoyang Qi
- Division of Hematology-Oncology, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267, USA.,Division of Human Genetics, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio 45229, USA
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157
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Rothan HA, Ambikabothy J, Ramasamy TS, Rashid NN, Yusof R. A Preliminary Study in Search of Potential Peptide Candidates for a Combinational Therapy with Cancer Chemotherapy Drug. Int J Pept Res Ther 2017. [DOI: 10.1007/s10989-017-9646-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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158
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Ashizawa K, Yoshimura K, Johno H, Inoue T, Katoh R, Funayama S, Sakamoto K, Takeda S, Masuyama K, Matsuoka T, Ishii H. Construction of mass spectra database and diagnosis algorithm for head and neck squamous cell carcinoma. Oral Oncol 2017; 75:111-119. [PMID: 29224807 DOI: 10.1016/j.oraloncology.2017.11.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 10/12/2017] [Accepted: 11/04/2017] [Indexed: 12/26/2022]
Abstract
OBJECTIVES Intraoperative identification of tumor margins is essential to achieving complete tumor resection. However, the process of intraoperative pathological diagnosis involves cumbersome procedures, such as preparation of cryosections and microscopic examination, thus requiring more than 30 min. Moreover, intraoperative diagnoses made by examining cryosections are occasionally inconsistent with postoperative diagnoses made by examining paraffin-embedded sections because the former are of poorer quality. We sought to establish a more rapid accurate method of intraoperative assessment. MATERIALS AND METHODS A diagnostic algorithm of head and neck squamous cell carcinoma (HNSCC) using machine learning was constructed by mass spectra obtained from 15 non-cancerous and 19 HNSCC specimens by probe electrospray ionization mass spectrometry (PESI-MS). The clinical validity of this system was evaluated using intraoperative specimens of HNSCC and normal mucosa. RESULTS A total of 114 and 141 mass spectra were acquired from non-cancerous and cancerous specimens, respectively, using both positive- and negative-ion modes of PESI-MS. These data were fed into partial least squares-logistic regression (PLS-LR) to discriminate tumor-specific spectral patterns. Leave-one-patient-out cross validation of this algorithm in positive- and negative-ion modes showed accuracies in HNSCC diagnosis of 90.48% and 95.35%, respectively. In intraoperative specimens of HNSCC, this algorithm precisely defined the borders of the cancerous regions; these corresponded with those determined by examining histologic sections. The procedure took approximately 5 min. CONCLUSION This diagnostic system, based on machine learning, enables accurate discrimination of cancerous regions and has the potential to provide rapid intraoperative assessment of HNSCC margins.
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Affiliation(s)
- Kei Ashizawa
- Department of Otolaryngology Head and Neck Surgery, Faculty of Medicine, University of Yamanashi, Chuo-city, Yamanashi 409-3898, Japan
| | - Kentaro Yoshimura
- Department of Anatomy and Cell Biology, Faculty of Medicine, University of Yamanashi, Yamanashi, Chuo-city, Yamanashi 409-3898, Japan
| | - Hisashi Johno
- Department of Anatomy and Cell Biology, Faculty of Medicine, University of Yamanashi, Yamanashi, Chuo-city, Yamanashi 409-3898, Japan
| | - Tomohiro Inoue
- Department of Human Pathology, Faculty of Medicine, University of Yamanashi, Chuo-city, Yamanashi 409-3898, Japan
| | - Ryohei Katoh
- Department of Human Pathology, Faculty of Medicine, University of Yamanashi, Chuo-city, Yamanashi 409-3898, Japan
| | - Satoshi Funayama
- Department of Radiology, Faculty of Medicine, University of Yamanashi, Chuo-city, Yamanashi 409-3898, Japan
| | - Kaname Sakamoto
- Department of Otolaryngology Head and Neck Surgery, Faculty of Medicine, University of Yamanashi, Chuo-city, Yamanashi 409-3898, Japan
| | - Sen Takeda
- Department of Anatomy and Cell Biology, Faculty of Medicine, University of Yamanashi, Yamanashi, Chuo-city, Yamanashi 409-3898, Japan
| | - Keisuke Masuyama
- Department of Otolaryngology Head and Neck Surgery, Faculty of Medicine, University of Yamanashi, Chuo-city, Yamanashi 409-3898, Japan
| | - Tomokazu Matsuoka
- Department of Otolaryngology Head and Neck Surgery, Faculty of Medicine, University of Yamanashi, Chuo-city, Yamanashi 409-3898, Japan.
| | - Hiroki Ishii
- Department of Otolaryngology Head and Neck Surgery, Faculty of Medicine, University of Yamanashi, Chuo-city, Yamanashi 409-3898, Japan.
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159
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De M, Ghosh S, Sen T, Shadab M, Banerjee I, Basu S, Ali N. A Novel Therapeutic Strategy for Cancer Using Phosphatidylserine Targeting Stearylamine-Bearing Cationic Liposomes. MOLECULAR THERAPY. NUCLEIC ACIDS 2017; 10:9-27. [PMID: 29499959 PMCID: PMC5723379 DOI: 10.1016/j.omtn.2017.10.019] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Accepted: 10/26/2017] [Indexed: 02/07/2023]
Abstract
There is a pressing need for a ubiquitously expressed antigen or receptor on the tumor surface for successful mitigation of the deleterious side effects of chemotherapy. Phosphatidylserine (PS), normally constrained to the intracellular surface, is exposed on the external surface of tumors and most tumorigenic cell lines. Here we report that a novel PS-targeting liposome, phosphatidylcholine-stearylamine (PC-SA), induced apoptosis and showed potent anticancer effects as a single agent against a majority of cancer cell lines. We experimentally proved that this was due to a strong affinity for and direct interaction of these liposomes with PS. Complexation of the chemotherapeutic drugs doxorubicin and camptothecin in these vesicles demonstrated a manyfold enhancement in the efficacies of the drugs both in vitro and across three advanced tumor models without any signs of toxicity. Both free and drug-loaded liposomes were maximally confined to the tumor site with low tissue concentration. These data indicate that PC-SA is a unique and promising liposome that, alone and as a combination therapy, has anticancer potential across a wide range of cancer types.
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Affiliation(s)
- Manjarika De
- Infectious Diseases and Immunology Division, Indian Institute of Chemical Biology, Kolkata, West Bengal, India
| | - Sneha Ghosh
- Infectious Diseases and Immunology Division, Indian Institute of Chemical Biology, Kolkata, West Bengal, India
| | - Triparna Sen
- Infectious Diseases and Immunology Division, Indian Institute of Chemical Biology, Kolkata, West Bengal, India
| | - Md Shadab
- Infectious Diseases and Immunology Division, Indian Institute of Chemical Biology, Kolkata, West Bengal, India
| | - Indranil Banerjee
- Infectious Diseases and Immunology Division, Indian Institute of Chemical Biology, Kolkata, West Bengal, India
| | - Santanu Basu
- Department of Oncology, ESI Hospital, Kolkata, West Bengal, India
| | - Nahid Ali
- Infectious Diseases and Immunology Division, Indian Institute of Chemical Biology, Kolkata, West Bengal, India.
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160
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Shukla SP, Udugamasooriya DG. A mini-library system to investigate non-essential residues of lipid-phosphatidylserine (PS) binding peptide-peptoid hybrid PPS1. MEDCHEMCOMM 2017. [PMID: 29527284 DOI: 10.1039/c7md00372b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We recently identified a peptide-peptoid hybrid, PPS1, which specifically recognized lipid-phosphatidylserine (PS). PPS1 consists of distinct positively charged and hydrophobic residue-containing regions. PPS1 monomer was inactive, but the dimeric form, PPS1D1, displayed strong cytotoxicity for lung cancer cells compared to normal cells in vitro, and reduced the tumor growth in vivo. The minimum pharmacophore of PPS1D1 showed that the first (methionine) and fourth (N-lysine) residues were not important for PPS1D1 cytotoxic activity. In this study, we further investigated these two residues, in particular the fourth residue that lies between the most important four residue hydrophobic region and two positively charged residues, to determine whether replacements of these moieties could gain activity improvements, or render PPS1D1 totally insensitive for binding recognition. The positively charged fourth residue N-lysine was replaced with the substituents having varied physiochemical properties, such as aromatic-hydrophobic, aliphatic-alicyclic, heterocyclic, and negatively charged residues, developing a mini-library of 39 derivatives. The standard 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium (MTS) colorimetric and/or the calcein AM cell viability assays performed on HCC4017 lung cancer cells indicated that the fourth position of PPS1D1 was insensitive to most changes, except reversal to the negative charge significantly affected the activity. This observation may be due to the neutralization of the nearby positively charged residue that is essential for binding. In addition, shortening each monomeric sequence by eliminating the methionine at the first position did not affect the activity.
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Affiliation(s)
- Satya Prakash Shukla
- Department of Pharmacological & Pharmaceutical Sciences, University of Houston, 3455 Cullen Blvd., Houston, TX 77204-5037, USA
| | - D Gomika Udugamasooriya
- Department of Pharmacological & Pharmaceutical Sciences, University of Houston, 3455 Cullen Blvd., Houston, TX 77204-5037, USA.,Department of Cancer Systems Imaging, MD Anderson Cancer Center, 1881 East Road, Houston, TX 77030-4009, USA
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161
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Pang Y, Li C, Wang S, Ba W, Yu T, Pei G, Bi D, Liang H, Pan X, Zhu T, Gou M, Han Y, Li Q. A novel protein derived from lamprey supraneural body tissue with efficient cytocidal actions against tumor cells. Cell Commun Signal 2017; 15:42. [PMID: 29037260 PMCID: PMC5644163 DOI: 10.1186/s12964-017-0198-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2017] [Accepted: 10/05/2017] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND In previous research, we found that cell secretion from the adult lamprey supraneural body tissues possesses cytocidal activity against tumor cells, but the protein with cytocidal activity was unidentified. METHODS A novel lamprey immune protein (LIP) as defense molecule was first purified and identified in jawless vertebrates (cyclostomes) using hydroxyapatite column and Q Sepharose Fast Flow column. After LIP stimulation, morphological changes of tumor cells were analysed and measured whether in vivo or in vitro. RESULTS LIP induces remarkable morphological changes in tumor cells, including cell blebbing, cytoskeletal alterations, mitochondrial fragmentation and endoplasmic reticulum vacuolation, and most of the cytoplasmic and organelle proteins are released following treatment with LIP. LIP evokes an elevation of intracellular calcium and inflammatory molecule levels. Our analysis of the cytotoxic mechanism suggests that LIP can upregulate the expression of caspase 1, RIPK1, RIP3 to trigger pyroptosis and necroptosis. To examine the effect of LIP in vivo, tumor xenograft experiments were performed, and the results indicated that LIP inhibits tumor growth without damage to mice. In addition, the cytotoxic action of LIP depended on the phosphatidylserine (PS) content of the cell membrane. CONCLUSIONS These observations suggest that LIP plays a crucial role in tumor cell survival and growth. The findings will also help to elucidate the mechanisms of host defense in lamprey.
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Affiliation(s)
- Yue Pang
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Changzhi Li
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Shiyue Wang
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Wei Ba
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Tao Yu
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Guangying Pei
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Dan Bi
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Hongfang Liang
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Xiong Pan
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Ting Zhu
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Meng Gou
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Yinglun Han
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Qingwei Li
- College of Life Science, Liaoning Normal University, Dalian, 116081, China. .,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China.
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162
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Detection of phosphatidylserine-positive exosomes as a diagnostic marker for ovarian malignancies: a proof of concept study. Oncotarget 2017; 8:14395-14407. [PMID: 28122335 PMCID: PMC5362413 DOI: 10.18632/oncotarget.14795] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 01/11/2017] [Indexed: 12/21/2022] Open
Abstract
There are no suitable screening modalities for ovarian carcinomas (OC) and repeated imaging and CA-125 levels are often needed to triage equivocal ovarian masses. Definitive diagnosis of malignancy, however, can only be established by histologic confirmation. Thus, the ability to detect OC at early stages is low, and most cases are diagnosed as advanced disease. Since tumor cells expose phosphatidylserine (PS) on their plasma membrane, we predicted that tumors might secrete PS-positive exosomes into the bloodstream that could be a surrogate biomarker for cancer. To address this, we developed a highly stringent ELISA that detects picogram quantities of PS in patient plasma. Blinded plasma from 34 suspect ovarian cancer patients and 10 healthy subjects were analyzed for the presence of PS-expressing vesicles. The nonparametric Wilcoxon rank sum test showed the malignant group had significantly higher PS values than the benign group (median 0.237 vs. -0.027, p=0.0001) and the malignant and benign groups had significantly higher PS values than the healthy group (median 0.237 vs -0.158, p<0.0001 and -0.027 vs -0.158, p=0.0002, respectively). ROC analysis of the predictive accuracy of PS-expressing exosomes/vesicles in predicting malignant against normal, benign against normal and malignant against benign revealed AUCs of 1.0, 0.95 and 0.911, respectively. This study provides proof-of-concept data that supports the high diagnostic power of PS detection in the blood of women with suspect ovarian malignancies.
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163
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Li R, Chiguru S, Li L, Kim D, Velmurugan R, Kim D, Devanaboyina SC, Tian H, Schroit A, Mason RP, Ober RJ, Ward ES. Targeting Phosphatidylserine with Calcium-Dependent Protein-Drug Conjugates for the Treatment of Cancer. Mol Cancer Ther 2017; 17:169-182. [PMID: 28939556 DOI: 10.1158/1535-7163.mct-17-0092] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 05/04/2017] [Accepted: 08/29/2017] [Indexed: 12/18/2022]
Abstract
In response to cellular stress, phosphatidylserine is exposed on the outer membrane leaflet of tumor blood vessels and cancer cells, motivating the development of phosphatidylserine-specific therapies. The generation of drug-conjugated phosphatidylserine-targeting agents represents an unexplored therapeutic approach, for which antitumor effects are critically dependent on efficient internalization and lysosomal delivery of the cytotoxic drug. In the current study, we have generated phosphatidylserine-targeting agents by fusing phosphatidylserine-binding domains to a human IgG1-derived Fc fragment. The tumor localization and pharmacokinetics of several phosphatidylserine-specific Fc fusions have been analyzed in mice and demonstrate that Fc-Syt1, a fusion containing the synaptotagmin 1 C2A domain, effectively targets tumor tissue. Conjugation of Fc-Syt1 to the cytotoxic drug monomethyl auristatin E results in a protein-drug conjugate (PDC) that is internalized into target cells and, due to the Ca2+ dependence of phosphatidylserine binding, dissociates from phosphatidylserine in early endosomes. The released PDC is efficiently delivered to lysosomes and has potent antitumor effects in mouse xenograft tumor models. Interestingly, although an engineered, tetravalent Fc-Syt1 fusion shows increased binding to target cells, this higher avidity variant demonstrates reduced persistence and therapeutic effects compared with bivalent Fc-Syt1. Collectively, these studies show that finely tuned, Ca2+-switched phosphatidylserine-targeting agents can be therapeutically efficacious. Mol Cancer Ther; 17(1); 169-82. ©2017 AACR.
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Affiliation(s)
- Ran Li
- Department of Molecular and Cellular Medicine, Texas A&M University Health Science Center, College Station, Texas
| | - Srinivas Chiguru
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Li Li
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Dongyoung Kim
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas
| | - Ramraj Velmurugan
- Department of Molecular and Cellular Medicine, Texas A&M University Health Science Center, College Station, Texas.,Biomedical Engineering Graduate Program, University of Texas Southwestern Medical Center, Dallas, Texas
| | - David Kim
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas
| | - Siva Charan Devanaboyina
- Department of Molecular and Cellular Medicine, Texas A&M University Health Science Center, College Station, Texas
| | - Hong Tian
- China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Alan Schroit
- Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Ralph P Mason
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Raimund J Ober
- Department of Molecular and Cellular Medicine, Texas A&M University Health Science Center, College Station, Texas.,Department of Biomedical Engineering, Texas A&M University, College Station, Texas
| | - E Sally Ward
- Department of Molecular and Cellular Medicine, Texas A&M University Health Science Center, College Station, Texas. .,Department of Microbial Pathogenesis and Immunology, Texas A&M University Health Science Center, College Station, Texas
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164
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Zweemer AJM, French CB, Mesfin J, Gordonov S, Meyer AS, Lauffenburger DA. Apoptotic Bodies Elicit Gas6-Mediated Migration of AXL-Expressing Tumor Cells. Mol Cancer Res 2017; 15:1656-1666. [PMID: 28923840 DOI: 10.1158/1541-7786.mcr-17-0012] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 08/09/2017] [Accepted: 09/13/2017] [Indexed: 01/06/2023]
Abstract
Metastases are a major cause of cancer mortality. AXL, a receptor tyrosine kinase aberrantly expressed in many tumors, is a potent oncogenic driver of metastatic cell motility and has been identified as broadly relevant in cancer drug resistance. Despite its frequent association with changes in cancer phenotypes, the precise mechanism leading to AXL activation is incompletely understood. In addition to its ligand growth arrest specific-6 (Gas6), activation of AXL requires the lipid moiety phosphatidylserine (PS). Phosphatidylserine is only available to mediate AXL activation when it is externalized on cell membranes, an event that occurs during certain physiologic processes such as apoptosis. Here, it is reported that exposure of cancer cells to phosphatidylserine-containing vesicles, including synthetic liposomes and apoptotic bodies, contributes to enhanced migration of tumor cells via a PS-Gas6-AXL signaling axis. These findings suggest that anticancer treatments that induce fractional cell killing enhance the motility of surviving cells in AXL-expressing tumors, which may explain the widespread role of AXL in limiting therapeutic efficacy.Implications: This study demonstrates that motility behavior of AXL-expressing tumor cells can be elicited by Gas6-bearing apoptotic bodies generated from tumor treatment with therapeutics that produce killing of a portion of the tumor cells present but not all, hence generating potentially problematic invasive and metastatic behavior of the surviving tumor cells. Mol Cancer Res; 15(12); 1656-66. ©2017 AACR.
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Affiliation(s)
- Annelien J M Zweemer
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts.,Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Cory B French
- Department of Biomedical Engineering, University of Florida, Gainesville, Florida
| | - Joshua Mesfin
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Simon Gordonov
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts.,Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Aaron S Meyer
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts.
| | - Douglas A Lauffenburger
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts. .,Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
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165
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Cell surface binding, uptaking and anticancer activity of L-K6, a lysine/leucine-rich peptide, on human breast cancer MCF-7 cells. Sci Rep 2017; 7:8293. [PMID: 28811617 PMCID: PMC5557901 DOI: 10.1038/s41598-017-08963-2] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Accepted: 07/20/2017] [Indexed: 01/06/2023] Open
Abstract
Cell surface binding and internalization are critical for the specific targeting and biofunctions of some cationic antimicrobial peptides (CAPs) with anticancer activities. However, the detailed cellular process for CAPs interacting with cancer cells and the exact molecular basis for their anticancer effects are still far from being fully understood. In the present study, we examined the cell surface binding, uptaking and anti-cancer activity of L-K6, a lysine/leucine-rich CAP, in human MCF-7 breast cancer cells. We found that L-K6 preferentially interact with MCF-7 cells. This tumor-targeting property of L-K6 might be partially due to its interactions with the surface exposed and negatively charged phosphatidylserine. Subsequently, L-K6 could internalize into MCF-7 cells mainly through a clathrin-independent macropinocytosis, without significant cell surface disruption. Finally, the internalized L-K6 induced a dramatic nuclear damage and MCF-7 cell death, without significant cytoskeleton disruption and mitochondrial impairment. This cytotoxicity of L-K6 against MCF-7 cancer cells could be further confirmed by using a mouse xenograft model. In summary, all these findings outlined the cellular process and cytotoxicity of L-K6 in MCF-7 cancer cells, and might help understand the complicated interactions between CAPs and cancer cells.
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166
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Alvares DS, Wilke N, Ruggiero Neto J, Fanani ML. The insertion of Polybia-MP1 peptide into phospholipid monolayers is regulated by its anionic nature and phase state. Chem Phys Lipids 2017; 207:38-48. [PMID: 28802697 DOI: 10.1016/j.chemphyslip.2017.08.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Revised: 07/30/2017] [Accepted: 08/05/2017] [Indexed: 02/06/2023]
Abstract
Polybia-MP1 or simply MP1 (IDWKKLLDAAKQIL-NH2) is a peptide with broad-spectrum bactericidal activity and a strong inhibitory effect against cancer cells. The aim of this work was to evaluate the effect of biophysical properties such as membrane texture and film thickness on MP1 interaction with neutral and anionic lipid membranes. For this purpose, we first explored the peptide's surface behavior. MP1 showed high surface activity, adsorbing onto bare air/aqueous interfaces up to higher surface pressures than the collapse pressure of MP1 Langmuir films. The MP1-lipid membrane interaction was studied using Langmuir phosphatidylcholine and phosphatidylserine (PS) monolayers as model membrane systems. PS was chosen since this negatively charged lipid was found predominantly on the outer leaflet of tumor cells, and it enhances MP1 activity for PS-containing membranes to a greater extent than for other negatively charged lipids. MP1 incorporated into anionic PS monolayers, which show a liquid-expanded (LE) phase or LE-liquid-condensed (LC) phase coexistence, up to lipid-packing densities higher than those of cell membranes. The mixed lipid/MP1 films were explored by Brewster angle microscopy and atomic force microscopy. MP1 partitioned preferentially into the LE phase state of PS films, and were thus excluded from the coexisting LC phase. This interaction had strong electrostatic bases: in pure water, the lipid-peptide interaction was strong enough to induce formation of reversible lipid-peptide 3D structures associated with the interface. MP1 incorporation into the LE phase was accompanied by a shift of the phase transition pressure to higher values and a thinning of the lipid film. These results showed a clear correlation between peptide penetration capacity and the presence or induction of the thin LE phase. This capacity to regulate membrane physical properties may be of relevance in the binding, incorporation and membrane selectivity of this promising antitumor peptide.
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Affiliation(s)
- Dayane S Alvares
- UNESP - São Paulo State University, IBILCE, Department of Physics, São José do Rio Preto, SP, Brazil
| | - Natalia Wilke
- Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC-CONICET), Departamento de Química Biológica, Facultas de Ciencias Químicas, Universidad Nacional de Córdoba, Argentina
| | - João Ruggiero Neto
- UNESP - São Paulo State University, IBILCE, Department of Physics, São José do Rio Preto, SP, Brazil.
| | - Maria Laura Fanani
- Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC-CONICET), Departamento de Química Biológica, Facultas de Ciencias Químicas, Universidad Nacional de Córdoba, Argentina.
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167
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Sharma S, Rajendran V, Kulshreshtha R, Ghosh PC. Enhanced efficacy of anti-miR-191 delivery through stearylamine liposome formulation for the treatment of breast cancer cells. Int J Pharm 2017; 530:387-400. [PMID: 28774852 DOI: 10.1016/j.ijpharm.2017.07.079] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 07/20/2017] [Accepted: 07/28/2017] [Indexed: 02/07/2023]
Abstract
MicroRNAs are gaining rapid attention as promising targets for cancer treatment; however, efficient delivery of therapeutic miRNA or anti-miRNA into cancer cells remains a major challenge. Our previous work identified miR-191 as an oncogenic miRNA overexpressed in breast cancer that assists in progression of malignant transformation. Thus, inhibition of miR-191 using antisense miR-191 (anti-miR-191) has immense therapeutic potential. Here, we have developed a stearylamine (SA) based cationic liposome for delivery of miR-191 inhibitor (anti-miR-191), and studied its efficacy in breast cancer cells (MCF-7 and ZR-75-1) in culture. SA liposomes alone inhibited cancer cell growth with lesser IC50s (50% inhibitory concentration) values as compared to normal mouse fibroblast cells (L929). The efficient delivery of anti-miR-191 in SA liposome complex was found to be highly effective in killing the cancer cells than a comparable dose of SA free anti-miR-191 liposome complex. The formulation also showed negligible cytotoxicity in human erythrocytes. Combined treatment of SA liposome with anti-miR-191 markedly enhanced apoptotic cell death and suppressed the migration of cancer cells in vitro. Notably, anti-miR-191 loaded SA liposome complex increased chemosensitivity of breast cancer cells to currently used anti-cancer drugs (doxorubicin or cisplatin) in free form. Our work demonstrates that anti-miR-191 loaded in SA liposome complex has promising clinical application for breast cancer therapy.
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Affiliation(s)
- Shivani Sharma
- Department of Biochemistry, University of Delhi South Campus, Benito Juarez Road, New Delhi 110021, India; Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Vinoth Rajendran
- Department of Biochemistry, University of Delhi South Campus, Benito Juarez Road, New Delhi 110021, India
| | - Ritu Kulshreshtha
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, New Delhi 110016, India.
| | - Prahlad C Ghosh
- Department of Biochemistry, University of Delhi South Campus, Benito Juarez Road, New Delhi 110021, India.
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168
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Wang L, Dong C, Li X, Han W, Su X. Anticancer potential of bioactive peptides from animal sources (Review). Oncol Rep 2017; 38:637-651. [PMID: 28677775 DOI: 10.3892/or.2017.5778] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 04/10/2017] [Indexed: 11/06/2022] Open
Abstract
Cancer is the most common cause of human death worldwide. Conventional anticancer therapies, including chemotherapy and radiation, are associated with severe side effects and toxicities as well as low specificity. Peptides are rapidly being developed as potential anticancer agents that specifically target cancer cells and are less toxic to normal tissues, thus making them a better alternative for the prevention and management of cancer. Recent research has focused on anticancer peptides from natural animal sources, such as terrestrial mammals, marine animals, amphibians, and animal venoms. However, the mode of action by which bioactive peptides inhibit the proliferation of cancer cells remains unclear. In this review, we present the animal sources from which bioactive peptides with anticancer activity are derived and discuss multiple proposed mechanisms by which these peptides exert cytotoxic effects against cancer cells.
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Affiliation(s)
- Linghong Wang
- Clinical Medicine Research Center of the Affiliated Hospital, Inner Mongolia Medical University, Huimin, Hohhot, Inner Mongolia 010050, P.R. China
| | - Chao Dong
- College of Basic Medicine of Inner Mongolia Medical University, Huimin, Hohhot, Inner Mongolia 010050, P.R. China
| | - Xian Li
- Clinical Medicine Research Center of the Affiliated Hospital, Inner Mongolia Medical University, Huimin, Hohhot, Inner Mongolia 010050, P.R. China
| | - Wenyan Han
- Clinical Medicine Research Center of the Affiliated Hospital, Inner Mongolia Medical University, Huimin, Hohhot, Inner Mongolia 010050, P.R. China
| | - Xiulan Su
- Clinical Medicine Research Center of the Affiliated Hospital, Inner Mongolia Medical University, Huimin, Hohhot, Inner Mongolia 010050, P.R. China
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169
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Sharma R, Huang X, Brekken RA, Schroit AJ. Detection of phosphatidylserine-positive exosomes for the diagnosis of early-stage malignancies. Br J Cancer 2017. [PMID: 28641308 PMCID: PMC5558679 DOI: 10.1038/bjc.2017.183] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Background: There has been increasing interest in the detection of tumour exosomes in blood for cancer diagnostics. Most studies have focussed on miRNA and protein signatures that are surrogate markers for specific tumour types. Because tumour cells and tumour-derived exosomes display phosphatidylserine (PS) in their outer membrane leaflet, we developed a highly sensitive ELISA-based system that detects picogram amounts of exosomal phospholipid in plasma as a cancer biomarker. Methods: This report describes the development of a highly specific and sensitive ELISA for the capture of PS-expressing tumour exosomes in the blood of tumour-bearing mice. To monitor the relationship between tumour burden and tumour exosome plasma concentrations, plasma from one transplantable breast cancer model (MDA-MB-231) and three genetic mouse models (MMTV-PyMT; breast and KIC and KPC; pancreatic) were screened for captured exosomal phospholipid. Results: We show that quantitative assessment of PS-expressing tumour exosomes detected very early-stage malignancies before clinical evidence of disease in all four model systems. Tumour exosome levels showed significant increases by day 7 after tumour implantation in the MDA-MB-231 model while palpable tumours appeared only after day 27. For the MMTV-PyMT and KIC models, tumour exosome levels increased significantly by day 49 (P⩽0.0002) and day 21 (P⩽0.001) while tumours developed only after days 60 and 40, respectively. For the KPC model, a significant increase in blood exosome levels was detected by day 70 (P=0.023) when only preinvasive lesions are microscopically detectable. Conclusions: These data indicate that blood PS exosome levels is a specific indicator of cancer and suggest that blood PS is a biomarker for early-stage malignancies.
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Affiliation(s)
- Raghava Sharma
- Hamon Center for Therapeutic Oncology Research, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Xianming Huang
- Hamon Center for Therapeutic Oncology Research, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Rolf A Brekken
- Hamon Center for Therapeutic Oncology Research, UT Southwestern Medical Center, Dallas, TX 75390, USA.,Department of Surgery, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Alan J Schroit
- Harold Simmons Comprehensive Cancer Center, UT Southwestern Medical Center, Dallas, TX 75390, USA.,Department of Immunology, UT Southwestern Medical Center, Dallas 75390, TX, USA
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170
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Liu YW, Shia KS, Wu CH, Liu KL, Yeh YC, Lo CF, Chen CT, Chen YY, Yeh TK, Chen WH, Jan JJ, Huang YC, Huang CL, Fang MY, Gray BD, Pak KY, Hsu TA, Huang KH, Tsou LK. Targeting Tumor Associated Phosphatidylserine with New Zinc Dipicolylamine-Based Drug Conjugates. Bioconjug Chem 2017; 28:1878-1892. [PMID: 28581724 DOI: 10.1021/acs.bioconjchem.7b00225] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A series of zinc(II) dipicolylamine (ZnDPA)-based drug conjugates have been synthesized to probe the potential of phosphatidylserine (PS) as a new antigen for small molecule drug conjugate (SMDC) development. Using in vitro cytotoxicity and plasma stability studies, PS-binding assay, in vivo pharmacokinetic studies, and maximum tolerated dose profiles, we provided a roadmap and the key parameters required for the development of the ZnDPA based drug conjugate. In particular, conjugate 24 induced tumor regression in the COLO 205 xenograft model and exhibited a more potent antitumor effect with a 70% reduction of cytotoxic payload compared to that of the marketed irinotecan when dosed at the same regimen. In addition to the validation of PS as an effective pharmacodelivery target for SMDC, our work also provided the foundation that, if applicable, a variety of therapeutic agents could be conjugated in the same manner to treat other PS-associated diseases.
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Affiliation(s)
- Yu-Wei Liu
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes , Miaoli 35053, Taiwan, ROC
| | - Kak-Shan Shia
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes , Miaoli 35053, Taiwan, ROC
| | - Chien-Huang Wu
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes , Miaoli 35053, Taiwan, ROC
| | - Kuan-Liang Liu
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes , Miaoli 35053, Taiwan, ROC
| | - Yu-Cheng Yeh
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes , Miaoli 35053, Taiwan, ROC
| | - Chen-Fu Lo
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes , Miaoli 35053, Taiwan, ROC
| | - Chiung-Tong Chen
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes , Miaoli 35053, Taiwan, ROC
| | - Yun-Yu Chen
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes , Miaoli 35053, Taiwan, ROC
| | - Teng-Kuang Yeh
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes , Miaoli 35053, Taiwan, ROC
| | - Wei-Han Chen
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes , Miaoli 35053, Taiwan, ROC
| | - Jiing-Jyh Jan
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes , Miaoli 35053, Taiwan, ROC
| | - Yu-Chen Huang
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes , Miaoli 35053, Taiwan, ROC
| | - Chen-Lung Huang
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes , Miaoli 35053, Taiwan, ROC
| | - Ming-Yu Fang
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes , Miaoli 35053, Taiwan, ROC
| | - Brian D Gray
- Molecular Targeting Technologies, Inc. , West Chester, Pennsylvania 19380, United States
| | - Koon Y Pak
- Molecular Targeting Technologies, Inc. , West Chester, Pennsylvania 19380, United States
| | - Tsu-An Hsu
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes , Miaoli 35053, Taiwan, ROC
| | - Kuan-Hsun Huang
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes , Miaoli 35053, Taiwan, ROC
| | - Lun K Tsou
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes , Miaoli 35053, Taiwan, ROC
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171
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Oyler-Yaniv J, Oyler-Yaniv A, Shakiba M, Min NK, Chen YH, Cheng SY, Krichevsky O, Altan-Bonnet N, Altan-Bonnet G. Catch and Release of Cytokines Mediated by Tumor Phosphatidylserine Converts Transient Exposure into Long-Lived Inflammation. Mol Cell 2017; 66:635-647.e7. [PMID: 28575659 PMCID: PMC6611463 DOI: 10.1016/j.molcel.2017.05.011] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 03/28/2017] [Accepted: 05/08/2017] [Indexed: 01/05/2023]
Abstract
Immune cells constantly survey the host for pathogens or tumors and secrete cytokines to alert surrounding cells of these threats. In vivo, activated immune cells secrete cytokines for several hours, yet an acute immune reaction occurs over days. Given these divergent timescales, we addressed how cytokine-responsive cells translate brief cytokine exposure into phenotypic changes that persist over long timescales. We studied melanoma cell responses to transient exposure to the cytokine interferon γ (IFNγ) by combining a systems-scale analysis of gene expression dynamics with computational modeling and experiments. We discovered that IFNγ is captured by phosphatidylserine (PS) on the surface of viable cells both in vitro and in vivo then slowly released to drive long-term transcription of cytokine-response genes. This mechanism introduces an additional function for PS in dynamically regulating inflammation across diverse cancer and primary cell types and has potential to usher in new immunotherapies targeting PS and inflammatory pathways.
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MESH Headings
- Animals
- Cell Communication
- Cell Line, Tumor
- Coculture Techniques
- Computational Biology
- Computer Simulation
- Databases, Genetic
- Female
- Gene Expression Profiling/methods
- Gene Expression Regulation, Neoplastic
- HEK293 Cells
- Humans
- Inflammation/genetics
- Inflammation/immunology
- Inflammation/metabolism
- Inflammation/pathology
- Inflammation Mediators/metabolism
- Interferon-gamma/immunology
- Interferon-gamma/metabolism
- Interleukin-12/immunology
- Interleukin-12/metabolism
- Interleukin-23/immunology
- Interleukin-23/metabolism
- Janus Kinases/metabolism
- Lymphocyte Activation
- Lymphocytes, Tumor-Infiltrating/immunology
- Lymphocytes, Tumor-Infiltrating/metabolism
- Lymphocytes, Tumor-Infiltrating/pathology
- Male
- Melanoma, Experimental/genetics
- Melanoma, Experimental/immunology
- Melanoma, Experimental/metabolism
- Melanoma, Experimental/pathology
- Mice
- Mice, Inbred BALB C
- Mice, Inbred C57BL
- Mice, Knockout
- Models, Biological
- PTEN Phosphohydrolase/genetics
- PTEN Phosphohydrolase/metabolism
- Phosphatidylserines/immunology
- Phosphatidylserines/metabolism
- Phosphorylation
- RAW 264.7 Cells
- Receptors, Interferon/genetics
- Receptors, Interferon/metabolism
- STAT1 Transcription Factor/metabolism
- Signal Transduction
- T-Lymphocytes/immunology
- T-Lymphocytes/metabolism
- T-Lymphocytes/pathology
- Thyroid Neoplasms/genetics
- Thyroid Neoplasms/immunology
- Thyroid Neoplasms/metabolism
- Thyroid Neoplasms/pathology
- Time Factors
- Transcription, Genetic
- Interferon gamma Receptor
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Affiliation(s)
- Jennifer Oyler-Yaniv
- ImmunoDynamics Group, Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, USA; Program in Immunology and Microbial Pathogenesis, Weill Cornell Graduate School of Medical Sciences, New York, NY 10065, USA; Program in Computational Biology, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Alon Oyler-Yaniv
- ImmunoDynamics Group, Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, USA; Physics Department, Ben Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Mojdeh Shakiba
- Program in Physiology, Biophysics, and Systems Biology, Weill Cornell Graduate School of Medical Sciences, New York, NY 10065, USA
| | - Nina K Min
- ImmunoDynamics Group, Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, USA
| | - Ying-Han Chen
- Laboratory of Host-Pathogen Dynamics, National Heart, Lung, and Blood Institute, Bethesda, MD 20892, USA
| | - Sheue-Yann Cheng
- Laboratory of Molecular Biology, Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA
| | - Oleg Krichevsky
- Physics Department, Ben Gurion University of the Negev, Beer-Sheva 84105, Israel; Ilse Kats Center for Nanoscience, Ben Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Nihal Altan-Bonnet
- Laboratory of Host-Pathogen Dynamics, National Heart, Lung, and Blood Institute, Bethesda, MD 20892, USA
| | - Grégoire Altan-Bonnet
- ImmunoDynamics Group, Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, USA; Program in Immunology and Microbial Pathogenesis, Weill Cornell Graduate School of Medical Sciences, New York, NY 10065, USA; Program in Computational Biology, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Program in Physiology, Biophysics, and Systems Biology, Weill Cornell Graduate School of Medical Sciences, New York, NY 10065, USA.
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172
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Riedl S, Rinner B, Schaider H, Liegl-Atzwanger B, Meditz K, Preishuber-Pflügl J, Grissenberger S, Lohner K, Zweytick D. In vitro and in vivo cytotoxic activity of human lactoferricin derived antitumor peptide R-DIM-P-LF11-334 on human malignant melanoma. Oncotarget 2017; 8:71817-71832. [PMID: 29069749 PMCID: PMC5641092 DOI: 10.18632/oncotarget.17823] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 04/11/2017] [Indexed: 02/02/2023] Open
Abstract
Di-peptides derived from the human host defense peptide lactoferricin were previously described to specifically interact with the negatively charged lipid phosphatidylserine exposed by cancer cells. In this study one further derivative, namely R-DIM-P-LF11-334 is shown to exhibit even increased cancer toxicity in vitro and in vivo while non-neoplastic cells are not harmed. In liposomal model systems composed of phosphatidylserine mimicking cancerous and phosphatidylcholine mimicking non-cancerous membranes the specific interaction with the cancer marker PS was confirmed by specific induction of membrane perturbation and permeabilization in presence of the peptide. In vitro studies with cell lines of human malignant melanoma, such as A375, or primary cells of human melanoma metastases to the brain, as MUG Mel1, and non-neoplastic human dermal fibroblasts NHDF revealed high cytotoxic effect of R-DIM-P-LF11-334 on melanoma cells of A375 and MUG Mel1, whereas only minor effect on the dermal fibroblasts NHDF was observed, yielding an about 20-fold killing-specificity for A375 and MUG-Mel1. The LC50 values for melanoma A375 and MUG Mel1 were about 10 μM. Analysis of secondary structure of the peptide revealed an increase in the proportion of β-sheets exclusively in presence of the cancer mimic. Stability studies further indicated a potential adequate stability in blood or under stringent conditions. Importantly the cytotoxic effect on cancer cells was also proven in vivo in mouse xenografts of human melanoma, where peptide treatment induced strong tumor regression and in average a tumor area reduction of 85% compared to tumors of control mice without peptide treatment.
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Affiliation(s)
- Sabrina Riedl
- Institute of Molecular Biosciences, University of Graz, Graz, Austria.,Institute of Pathology, Medical University of Graz, Graz, Austria
| | | | - Helmut Schaider
- Biomedical Research, Medical University of Graz, Graz, Austria.,Cancer Biology Unit, Department of Dermatology, Medical University of Graz, Graz, Austria
| | - Bernadette Liegl-Atzwanger
- Dermatology Research Centre, The University of Queensland, School of Medicine, Southern Clinical Division, Woolloongabba, Brisbane, Queensland, Australia
| | | | - Julia Preishuber-Pflügl
- Institute of Molecular Biosciences, University of Graz, Graz, Austria.,Institute of Pathology, Medical University of Graz, Graz, Austria
| | - Sarah Grissenberger
- Institute of Molecular Biosciences, University of Graz, Graz, Austria.,Institute of Pathology, Medical University of Graz, Graz, Austria
| | - Karl Lohner
- Institute of Molecular Biosciences, University of Graz, Graz, Austria.,Institute of Pathology, Medical University of Graz, Graz, Austria
| | - Dagmar Zweytick
- Institute of Molecular Biosciences, University of Graz, Graz, Austria.,Institute of Pathology, Medical University of Graz, Graz, Austria
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173
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The daunorubicin interplay with mimetic model membranes of cancer cells: A biophysical interpretation. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2017; 1859:941-948. [DOI: 10.1016/j.bbamem.2017.01.034] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 01/26/2017] [Accepted: 01/28/2017] [Indexed: 10/20/2022]
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174
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Raoufi Rad N, McRobb LS, Zhao Z, Lee VS, Patel NJ, Qureshi AS, Grace M, McHattan JJ, Amal Raj JV, Duong H, Kashba SR, Stoodley MA. Phosphatidylserine Translocation after Radiosurgery in an Animal Model of Arteriovenous Malformation. Radiat Res 2017; 187:701-707. [PMID: 28414573 DOI: 10.1667/rr14646.1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Phosphatidylserine (PS) is asymmetrically distributed across the plasma membrane, located predominantly on the inner leaflet in healthy cells. Translocation of PS to the outer leaflet makes it available as a target for biological therapies. We examined PS translocation after radiosurgery in an animal model of brain arteriovenous malformation (AVM). An arteriovenous fistula was created by end-to-side anastomosis of the left external jugular vein to the common carotid artery in 6-week-old, male Sprague Dawley rats. Six weeks after AVM creation, 15 rats underwent Gamma Knife stereotactic radiosurgery receiving a single 15 Gy dose to the margin of the fistula; 15 rats received sham treatment. Externalization of PS was examined by intravenous injection of a PS-specific near-infrared probe, PSVue-794, and in vivo fluorescence optical imaging at 1, 7, 21, 42, 63 and 84 days postirradiation. Fluorescent signaling indicative of PS translocation to the luminal cell surface accumulated in the AVM region, in both irradiated and nonirradiated animals, at all time points. Fluorescence was localized specifically to the AVM region and was not present in any other anatomical sites. Translocated PS increased over time in irradiated rats (P < 0.001) but not in sham-irradiated rats and this difference reached statistical significance at day 84 (P < 0.05). In summary, vessels within the mature rat AVM demonstrate elevated PS externalization compared to normal vessels. A single dose of ionizing radiation can increase PS externalization in a time-dependent manner. Strict localization of PS externalization within the AVM region suggests that stereotactic radiosurgery can serve as an effective priming agent and PS may be a suitable candidate for vascular-targeting approaches to AVM treatment.
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Affiliation(s)
- Newsha Raoufi Rad
- a Department of Clinical Medicine, Faculty of Medicine and Health Sciences, Macquarie University, New South Wales, Australia
| | - Lucinda S McRobb
- a Department of Clinical Medicine, Faculty of Medicine and Health Sciences, Macquarie University, New South Wales, Australia
| | - Zhenjun Zhao
- a Department of Clinical Medicine, Faculty of Medicine and Health Sciences, Macquarie University, New South Wales, Australia
| | - Vivienne S Lee
- a Department of Clinical Medicine, Faculty of Medicine and Health Sciences, Macquarie University, New South Wales, Australia
| | - Nirav J Patel
- a Department of Clinical Medicine, Faculty of Medicine and Health Sciences, Macquarie University, New South Wales, Australia
| | - Anas Sarwar Qureshi
- a Department of Clinical Medicine, Faculty of Medicine and Health Sciences, Macquarie University, New South Wales, Australia
| | - Michael Grace
- b Genesis Cancer Care, Macquarie University Hospital, New South Wales, Australia
| | | | - Jude V Amal Raj
- a Department of Clinical Medicine, Faculty of Medicine and Health Sciences, Macquarie University, New South Wales, Australia
| | - Hong Duong
- a Department of Clinical Medicine, Faculty of Medicine and Health Sciences, Macquarie University, New South Wales, Australia
| | - Saleh R Kashba
- a Department of Clinical Medicine, Faculty of Medicine and Health Sciences, Macquarie University, New South Wales, Australia.,d Department of Neurosurgery, Misurata Cancer Institute, Misurata University, Misurata, Libya
| | - Marcus A Stoodley
- a Department of Clinical Medicine, Faculty of Medicine and Health Sciences, Macquarie University, New South Wales, Australia
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175
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Cellular response to star-shaped polyacids. Solution behavior and conjugation advantages. Toxicol Lett 2017; 274:42-50. [PMID: 28347839 DOI: 10.1016/j.toxlet.2017.03.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 03/17/2017] [Accepted: 03/22/2017] [Indexed: 11/21/2022]
Abstract
The nanosized (∼10nm in 0.01M PBS and 210nm in water) star-shaped polymethacrylates with various content of pendant carboxyl groups were characterized via basic physicochemical and biological properties toward their use as drug carriers for intravenous administration. The carboxyl groups in polymer were employed to conjugate fluorescein (FA) or doxorubicin (DOX) via amide bond formation. In case of DOX, the conjugation efficiency was higher (4.0-16.0%) than of FA conjugation (1.5-4.5%) for corresponding copolymers. The solubility of conjugates strongly depended on the type of attached compound, that is free carriers and their FA conjugates were water-soluble, whereas DOX conjugates were insoluble in water. Cytotoxicity tests performed on model fibroblast and epithelial cell lines showed that negatively charged copolymers (ZP ranged from -75 to -25mV) were slightly toxic for normal cells (NHDF) and non-toxic for cancer cell lines (HCT-116 and MCF-7/R). The copolymer dose equal to 125μg/mL resulted in cell viability 118% towards NHDF and 90% for HCT116 cells. The internalization of a representative polymer-fluorescein conjugate by HCT-116 and its accumulation in cytoplasm was proven via fluorescence microscopy. MMA/MAA stars showed no adverse effect on HCT-116 cells, hence fluorescein-tagged polymers might be applied as fluorescence probes for in vitro imaging, whereas doxorubicin-tagged polymers might be developed as a new polymeric drug carriers.
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176
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Alvares DS, Ruggiero Neto J, Ambroggio EE. Phosphatidylserine lipids and membrane order precisely regulate the activity of Polybia-MP1 peptide. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2017; 1859:1067-1074. [PMID: 28274844 DOI: 10.1016/j.bbamem.2017.03.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 02/21/2017] [Accepted: 03/02/2017] [Indexed: 01/29/2023]
Abstract
Polybia-MP1 (IDWKKLLDAAKQIL-NH2) is a lytic peptide from the Brazilian wasp venom with known anti-cancer properties. Previous evidence indicates that phosphatidylserine (PS) lipids are relevant for the lytic activity of MP1. In agreement with this requirement, phosphatidylserine lipids are translocated to the outer leaflet of cells, and are available for MP1 binding, depending on the presence of liquid-ordered domains. Here, we investigated the effect of PS on MP1 activity when this lipid is reconstituted in membranes of giant or large liposomes with different lipid-phase states. By monitoring the membrane and soluble luminal content of giant unilamellar vesicles (GUVs), using fluorescence confocal microscopy, we were able to determine that MP1 has a pore-forming activity at the membrane level. Liquid-ordered domains, which were phase-separated within the membrane of GUVs, influenced the pore-forming activity of MP1. Experiments evaluating the membrane-binding and lytic activity of MP1 on large unilamellar vesicles (LUVs), with the same lipid composition as GUVs, demonstrated that there was synergy between liquid-ordered domains and PS, which enhanced both activities. Based on our findings, we propose that the physicochemical properties of cancer cell membranes, which possess a much higher concentration of PS than normal cells, renders them susceptible to MP1 binding and lytic pore formation. These results can be correlated with MP1's potent and selective anti-cancer activity and pave the way for future research to develop cancer therapies that harness and exploit the properties of MP1.
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Affiliation(s)
- Dayane S Alvares
- UNESP - São Paulo State University, IBILCE, Department of Physics, São José do Rio Preto, SP, Brazil
| | - João Ruggiero Neto
- UNESP - São Paulo State University, IBILCE, Department of Physics, São José do Rio Preto, SP, Brazil.
| | - Ernesto E Ambroggio
- Centro de Investigaciones en Quimica Biológica de Córdoba (CIQUIBIC-CONICET), Departamento de Química Biológica, Facultas de Ciencias Químicas, Universidad Nacional de Córdoba, Argentina.
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177
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Vuckovic S, Vandyke K, Rickards DA, McCauley Winter P, Brown SHJ, Mitchell TW, Liu J, Lu J, Askenase PW, Yuriev E, Capuano B, Ramsland PA, Hill GR, Zannettino ACW, Hutchinson AT. The cationic small molecule GW4869 is cytotoxic to high phosphatidylserine-expressing myeloma cells. Br J Haematol 2017; 177:423-440. [PMID: 28211573 DOI: 10.1111/bjh.14561] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2016] [Accepted: 12/01/2016] [Indexed: 12/19/2022]
Abstract
We have discovered that a small cationic molecule, GW4869, is cytotoxic to a subset of myeloma cell lines and primary myeloma plasma cells. Biochemical analysis revealed that GW4869 binds to anionic phospholipids such as phosphatidylserine - a lipid normally confined to the intracellular side of the cell membrane. However, interestingly, phosphatidylserine was expressed on the surface of all myeloma cell lines tested (n = 12) and 9/15 primary myeloma samples. Notably, the level of phosphatidylserine expression correlated well with sensitivity to GW4869. Inhibition of cell surface phosphatidylserine exposure with brefeldin A resulted in resistance to GW4869. Finally, GW4869 was shown to delay the growth of phosphatidylserine-high myeloma cells in vivo. To the best of our knowledge, this is the first example of using a small molecule to target phosphatidylserine on malignant cells. This study may provide the rationale for the development of phosphatidylserine-targeting small molecules for the treatment of surface phosphatidylserine-expressing cancers.
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Affiliation(s)
- Slavica Vuckovic
- The Bone Marrow Transplantation Laboratory, QIMR Berghofer Medical Research Institute, Brisbane, Qld, Australia.,School of Medicine, University of Queensland, Brisbane, Qld, Australia.,Mater Research, Translational Research Institute, Brisbane, Qld, Australia
| | - Kate Vandyke
- Faculty of Health and Medical Sciences, SA Pathology, The University of Adelaide, Adelaide, SA.,Cancer Theme, South Australian Health and Medical Research Institute, SA Pathology, Adelaide, SA, Australia
| | - David A Rickards
- School of Life Sciences, Centre for Health Technologies and the iThree Institute, University of Technology Sydney, Ultimo, NSW, Australia
| | - Padraig McCauley Winter
- School of Life Sciences, Centre for Health Technologies and the iThree Institute, University of Technology Sydney, Ultimo, NSW, Australia
| | - Simon H J Brown
- School of Biology and Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW, Australia
| | - Todd W Mitchell
- School of Biology and Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW, Australia
| | - Jun Liu
- Department of Genetics, Yale Stem Cell Center, Yale Cancer Center and Yale Center for RNA Science and Medicine, New Haven, CT, USA
| | - Jun Lu
- Department of Genetics, Yale Stem Cell Center, Yale Cancer Center and Yale Center for RNA Science and Medicine, New Haven, CT, USA
| | - Philip W Askenase
- Section of Allergy and Clinical Immunology, Department of Internal Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Elizabeth Yuriev
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, Australia
| | - Ben Capuano
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, Australia
| | - Paul A Ramsland
- School of Science, RMIT University, Bundoora, VIC, Australia.,Centre for Biomedical Research, Burnet Institute, Melbourne, VIC, Australia.,Department of Immunology, Monash University, Alfred Medical Research and Education Precinct, Melbourne, VIC, Australia.,Department of Surgery Austin Health, University of Melbourne, Heidelberg, Vic, Australia
| | - Geoffrey R Hill
- The Bone Marrow Transplantation Laboratory, QIMR Berghofer Medical Research Institute, Brisbane, Qld, Australia.,Department of Bone Marrow Transplantation, The Royal Brisbane and Women's Hospital, Herston, Qld, Australia
| | - Andrew C W Zannettino
- Faculty of Health and Medical Sciences, SA Pathology, The University of Adelaide, Adelaide, SA.,Cancer Theme, South Australian Health and Medical Research Institute, SA Pathology, Adelaide, SA, Australia
| | - Andrew T Hutchinson
- School of Life Sciences, Centre for Health Technologies and the iThree Institute, University of Technology Sydney, Ultimo, NSW, Australia.,Section of Allergy and Clinical Immunology, Department of Internal Medicine, Yale School of Medicine, New Haven, CT, USA.,Centre for Biomedical Research, Burnet Institute, Melbourne, VIC, Australia
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178
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Yang JS, Lee JC, Byeon SK, Rha KH, Moon MH. Size Dependent Lipidomic Analysis of Urinary Exosomes from Patients with Prostate Cancer by Flow Field-Flow Fractionation and Nanoflow Liquid Chromatography-Tandem Mass Spectrometry. Anal Chem 2017; 89:2488-2496. [PMID: 28192938 DOI: 10.1021/acs.analchem.6b04634] [Citation(s) in RCA: 106] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Exosomes are membrane-bound extracellular vesicles involved in intercellular communication and tumor cell metastasis. In this study, flow field-flow fractionation (FlFFF) was utilized to separate urinary exosomes by size, demonstrating a significant difference in exosome sizes between healthy controls and patients with prostate cancer (PCa). Exosome fractions of different sizes were collected for microscopic analysis during an FlFFF run and evaluated with exosome marker proteins using Western blot analysis. The results indicated that exosomes of different sizes originated from different types of cells. Collected exosome fractions were further examined using nanoflow ultrahigh performance liquid chromatography-electrospray ionization-tandem mass spectrometry (nUPLC-ESI-MS/MS) for lipidomic analysis. A total of 162 lipids (from 286 identified) were quantified using a selected reaction monitoring (SRM) method. The overall amount of lipids increased by 1.5- to 2-fold in patients with PCa and degree of increase was more significant in the smaller fractions (diameter <150 nm) than in the larger ones (diameter >150 nm) some classes of lipids. In addition, neutral lipids like diacylglycerol (DAG) and triacylglycerol (TAG) decreased in all exosomes without size dependency. Moreover, a dramatic increase in 22:6/22:6-phosphatidylglycerol (PG) was observed and significant decrease in (16:0,16:0)- and (16:1, 18:1)-DAG species (nearly 5-fold) and high abundant TAG species (>2.5-fold) was observed in patients with PCa. The results of this study indicate that FlFFF can be employed for the high-speed screening of urinary exosome sizes in patients with PCa and lipidomic analysis of the fractionated exosomes has potential for developing and distinguishing biomarkers of PCa.
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Affiliation(s)
- Joon Seon Yang
- Department of Chemistry, Yonsei University , 50 Yonsei-Ro, Seoul, 03722 South Korea
| | - Jong Cheol Lee
- Department of Chemistry, Yonsei University , 50 Yonsei-Ro, Seoul, 03722 South Korea
| | - Seul Kee Byeon
- Department of Chemistry, Yonsei University , 50 Yonsei-Ro, Seoul, 03722 South Korea
| | - Koon Ho Rha
- Department of Urology, Yonsei University College of Medicine , 50-1 Yonsei-Ro, Seoul, 03722 South Korea
| | - Myeong Hee Moon
- Department of Chemistry, Yonsei University , 50 Yonsei-Ro, Seoul, 03722 South Korea
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179
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Guillen KP, Ruben EA, Virani N, Harrison RG. Annexin-directed β-glucuronidase for the targeted treatment of solid tumors. Protein Eng Des Sel 2017; 30:85-94. [PMID: 27986920 PMCID: PMC5241760 DOI: 10.1093/protein/gzw063] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2016] [Revised: 10/10/2016] [Accepted: 11/17/2016] [Indexed: 01/13/2023] Open
Abstract
Enzyme prodrug therapy has the potential to remedy the lack of selectivity associated with the systemic administration of chemotherapy. However, most current systems are immunogenic and constrained to a monotherapeutic approach. We developed a new class of fusion proteins centered about the human enzyme β-glucuronidase (βG), capable of converting several innocuous prodrugs into chemotherapeutics. We targeted βG to phosphatidylserine on tumor cells, tumor vasculature and metastases via annexin A1/A5. Phosphatidylserine shows promise as a universal marker for solid tumors and allows for tumor type-independent targeting. To create fusion proteins, human annexin A1/A5 was genetically fused to the activity-enhancing 16a3 mutant of human βG, expressed in chemically defined, fed-batch suspension culture, and chromatographically purified. All fusion constructs achieved >95% purity with yields up to 740 μg/l. Fusion proteins displayed cancer selective cell-surface binding with cell line-dependent binding stability. One fusion protein in combination with the prodrug SN-38 glucuronide was as effective as the drug SN-38 on Panc-1 pancreatic cancer cells and HAAE-1 endothelial cells, and demonstrated efficacy against MCF-7 breast cancer cells. βG fusion proteins effectively enable localized combination therapy that can be tailored to each patient via prodrug selection, with promising clinical potential based on their near fully human design.
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Affiliation(s)
- Katrin P Guillen
- Biomedical Engineering Program and School of Chemical, Biological and Materials Engineering, University of Oklahoma, 100 E. Boyd St., Norman, OK 73019, USA
| | - Eliza A Ruben
- Protein Production Core, Department of Chemistry and Biochemistry, University of Oklahoma, 101 Stephenson Parkway, Norman, OK 73019, USA
| | - Needa Virani
- Biomedical Engineering Program and School of Chemical, Biological and Materials Engineering, University of Oklahoma, 100 E. Boyd St., Norman, OK 73019, USA
| | - Roger G Harrison
- Biomedical Engineering Program and School of Chemical, Biological and Materials Engineering, University of Oklahoma, 100 E. Boyd St., Norman, OK 73019, USA
- Stephenson Cancer Center, Health Sciences Center, University of Oklahoma, 800 Northeast 10th St., Oklahoma City, OK 73104, USA
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180
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Balandin SV, Emelianova AA, Kalashnikova MB, Kokryakov VN, Shamova OV, Ovchinnikova TV. Molecular mechanisms of antitumor effect of natural antimicrobial peptides. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2017. [DOI: 10.1134/s1068162016060029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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181
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Wilms D, Andrä J. Comparison of patient-derived high and low phosphatidylserine-exposing colorectal carcinoma cells in their interaction with anti-cancer peptides. J Pept Sci 2017; 23:56-67. [PMID: 28066958 DOI: 10.1002/psc.2963] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 12/01/2016] [Accepted: 12/07/2016] [Indexed: 01/10/2023]
Abstract
Current cancer treatment is frequently compromised by severe adverse effects on healthy cells and tissues as well as by the increasing burden of (multi-)drug resistances. Some representatives of small, amphipathic peptides known as host defense peptides possess the potential to overcome these limitations and to evolve as future anti-cancer therapeutics. Peptide NK-2, derived from porcine NK-lysin, was originally discovered due to its broad-spectrum antimicrobial activities. Today, also potent anti-cancer activity is proven and accompanied by low toxicity towards normal human cells. The molecular basis underlying this target selectivity remains rather elusive. Nevertheless, it is presumptive that preferential peptide interactions with surface factors non-abundant on healthy human cells play a key role. Here, we investigated the cytotoxicity of peptide NK-2 and structurally improved anti-cancer variants thereof against two patient-derived colorectal cancer cell lines, exposing high and low levels of phosphatidylserine on their cell surfaces, respectively. Concluding from a range of in vitro tests involving cellular as well as lipid vesicle-based methods, it is proposed that the magnitude of the accessible membrane surface charge is not a primarily decisive factor for selective peptide interactions. Instead, it is suggested that the level of membrane surface-exposed phosphatidylserine is of crucial importance for the activity of peptide NK-2 and enhanced variants thereof in terms of their cancer cell selectivity, the overall efficacy, as well as the underlying mode of action and kinetics. Copyright © 2017 European Peptide Society and John Wiley & Sons, Ltd.
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Affiliation(s)
- Dominik Wilms
- Faculty of Life Sciences, Department of Biotechnology, Hamburg University of Applied Sciences, Ulmenliet 20, D-21033, Hamburg, Germany
| | - Jörg Andrä
- Faculty of Life Sciences, Department of Biotechnology, Hamburg University of Applied Sciences, Ulmenliet 20, D-21033, Hamburg, Germany
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182
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Arias M, Vogel HJ. Fluorescence and Absorbance Spectroscopy Methods to Study Membrane Perturbations by Antimicrobial Host Defense Peptides. Methods Mol Biol 2017; 1548:141-157. [PMID: 28013502 DOI: 10.1007/978-1-4939-6737-7_10] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Antimicrobial peptides (AMPs) are currently intensely studied because of their potential as new bactericidal and bacteriostatic agents. The mechanism of action of numerous AMPs involves the permeabilization of bacterial membranes. Several methods have been developed to study peptide-membrane interactions; in particular optical spectroscopy methods are widely used. The intrinsic fluorescence properties of the Trp indole ring in Trp-containing AMPs can be exploited by measuring the fluorescence blue shift and acrylamide-induced fluorescence quenching. One important aspect of such studies is the use of distinct models of the bacterial membrane, in most cases large unilamellar vesicles (LUVs) with different, yet well-defined, phospholipid compositions. Deploying LUVs that are preloaded with fluorescent dyes, such as calcein, also allows for the study of vesicle permeabilization by AMPs. In addition, experiments using genetically engineered live Escherichia coli cells can be used to distinguish between the effects of AMPs on the outer and inner membranes of gram-negative bacteria. In combination, these methods can provide a detailed insight into the mode of action of AMPs.
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Affiliation(s)
- Mauricio Arias
- Biochemistry Research Group, Department of Biological Sciences, University of Calgary, 2500 University Dr. NW, Calgary, AB, Canada, T2N 1N4
| | - Hans J Vogel
- Biochemistry Research Group, Department of Biological Sciences, University of Calgary, 2500 University Dr. NW, Calgary, AB, Canada, T2N 1N4.
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183
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Maciel E, Felgueiras J, Silva EMP, Ricardo F, Moreira ASP, Melo T, Campos A, Fardilha M, Domingues P, Domingues MR. Lipid remodelling in human melanoma cells in response to UVA exposure. Photochem Photobiol Sci 2017; 16:744-752. [DOI: 10.1039/c7pp00025a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The UVA exposure have impact on the lipid composition in human melanoma cells.
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184
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Ayesa U, Gray BD, Pak KY, Chong PLG. Liposomes Containing Lipid-Soluble Zn(II)-Bis-dipicolylamine Derivatives Show Potential To Be Targeted to Phosphatidylserine on the Surface of Cancer Cells. Mol Pharm 2016; 14:147-156. [PMID: 28043132 DOI: 10.1021/acs.molpharmaceut.6b00760] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Here we used a lipid-soluble Zn(II)-bis-dipicolylamine derivative as a membrane component to develop liposomal carriers that have potential to be targeted to phosphatidylserine (PS) rich surfaces on cancer cells and to preferentially kill cancer cells without using anticancer drugs. This DPA derivative (abbreviated as DPA-Cy3[22,22]) contains the fluorophore cyanine 3 (Cy3) and two 22-carbon chains that can be anchored into liposomal membrane bilayers. DPA-Cy3[22,22]/1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC) unilamellar vesicles (∼150 nm) showed selective binding to PS-containing liposomes as demonstrated by anion exchange chromatography. This binding does not result in vesicle fusion or aggregation. Flow cytometry showed that DPA-Cy3[22,22]/POPC liposomes have preferential binding to MCF-7 breast cancer cells over MCF-12A noncancer cells due to 3-7 times more PS exposures on MCF-7. The extent of liposome binding with MCF-7 cells was increased by two times after cells were pretreated with the apoptotic inducer camptothecin, which increased PS exposure to the cell surface. Moreover, our flow cytometry data also suggest that local cell membrane perturbations may occur upon liposome binding and internalization. This implies that DPA-Cy3[22,22]/POPC liposomes alone may have a PS-dependent cytotoxic effect. This assertion was supported by the cell proliferation assay, which showed that 9.1 mol % DPA-Cy3[22,22]/POPC liposomes exert cytotoxicity on MCF-7 cells 3.5 times higher than that on MCF-12A cells. These results indicate that DPA-Cy3[22,22]-containing liposomes hold great promise as efficient nano drug carriers.
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Affiliation(s)
- Umme Ayesa
- Department of Medical Genetics and Molecular Biochemistry, The Lewis Katz School of Medicine at Temple University , Philadelphia, Pennsylvania 19140, United States
| | - Brian D Gray
- Molecular Targeting Technologies, Inc. , West Chester, Pennsylvania 19380, United States
| | - Koon Y Pak
- Molecular Targeting Technologies, Inc. , West Chester, Pennsylvania 19380, United States
| | - Parkson Lee-Gau Chong
- Department of Medical Genetics and Molecular Biochemistry, The Lewis Katz School of Medicine at Temple University , Philadelphia, Pennsylvania 19140, United States
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185
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Arias M, Hilchie AL, Haney EF, Bolscher JGM, Hyndman ME, Hancock REW, Vogel HJ. Anticancer activities of bovine and human lactoferricin-derived peptides. Biochem Cell Biol 2016; 95:91-98. [PMID: 28165293 DOI: 10.1139/bcb-2016-0175] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Lactoferrin (LF) is a mammalian host defense glycoprotein with diverse biological activities. Peptides derived from the cationic region of LF possess cytotoxic activity against cancer cells in vitro and in vivo. Bovine lactoferricin (LFcinB), a peptide derived from bovine LF (bLF), exhibits broad-spectrum anticancer activity, while a similar peptide derived from human LF (hLF) is not as active. In this work, several peptides derived from the N-terminal regions of bLF and hLF were studied for their anticancer activities against leukemia and breast-cancer cells, as well as normal peripheral blood mononuclear cells. The cyclized LFcinB-CLICK peptide, which possesses a stable triazole linkage, showed improved anticancer activity, while short peptides hLF11 and bLF10 were not cytotoxic to cancer cells. Interestingly, hLF11 can act as a cell-penetrating peptide; when combined with the antimicrobial core sequence of LFcinB (RRWQWR) through either a Pro or Gly-Gly linker, toxicity to Jurkat cells increased. Together, our work extends the library of LF-derived peptides tested for anticancer activity, and identified new chimeric peptides with high cytotoxicity towards cancerous cells. Additionally, these results support the notion that short cell-penetrating peptides and antimicrobial peptides can be combined to create new adducts with increased potency.
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Affiliation(s)
- Mauricio Arias
- a Biochemistry Research Group, Department of Biological Sciences, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Ashley L Hilchie
- b Centre for Microbial Diseases and Immunity Research, University of British Columbia, Vancouver, BC V6T 1Z4, Canada.,c Department of Microbiology and Immunology, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Evan F Haney
- b Centre for Microbial Diseases and Immunity Research, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
| | - Jan G M Bolscher
- d Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University of Amsterdam, 1081 AL Amsterdam, the Netherlands
| | - M Eric Hyndman
- e Department of Surgery, Division of Urology, Southern Alberta Institute of Urology, University of Calgary, Calgary, AB T2V 1P9, Canada
| | - Robert E W Hancock
- b Centre for Microbial Diseases and Immunity Research, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
| | - Hans J Vogel
- a Biochemistry Research Group, Department of Biological Sciences, University of Calgary, Calgary, AB T2N 1N4, Canada.,b Centre for Microbial Diseases and Immunity Research, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
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186
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Milosavljevic V, Haddad Y, Merlos Rodrigo MA, Moulick A, Polanska H, Hynek D, Heger Z, Kopel P, Adam V. The Zinc-Schiff Base-Novicidin Complex as a Potential Prostate Cancer Therapy. PLoS One 2016; 11:e0163983. [PMID: 27727290 PMCID: PMC5058503 DOI: 10.1371/journal.pone.0163983] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2016] [Accepted: 09/16/2016] [Indexed: 12/14/2022] Open
Abstract
Prostate cancer cells control energy metabolism by chelating intracellular zinc. Thus, zinc delivery has been a popular therapeutic approach for prostate cancer. Here, we propose the use of the membrane-penetrating peptide Novicidin connected to zinc-Schiff base as a carrier vehicle for the delivery of zinc to prostate cells. Mass spectrometry, electrochemistry and spectrophotometry confirmed the formation/stability of this complex and provided insight regarding the availability of zinc for complex interactions. This delivery system showed minor toxicity in normal PNT1A cells and high potency towards PC3 tumor cells. The complex preferentially penetrated PC3 tumor cells in contrast to confinement to the membranes of PNT1A. Furthermore, zinc uptake was confirmed in both cell lines. Molecular analysis was used to confirm the activation of zinc stress (e.g., ZnT-1) and apoptosis (e.g., CASP-1). Our results strongly suggest that the zinc-Schiff base-Novicidin complex has great potential as a novel anticancer drug.
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Affiliation(s)
- Vedran Milosavljevic
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00, Brno, Czech Republic, European Union
| | - Yazan Haddad
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00, Brno, Czech Republic, European Union
| | - Miguel Angel Merlos Rodrigo
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00, Brno, Czech Republic, European Union.,Central European Institute of Technology, Brno University of Technology, Purkynova 123, CZ-612 00, Brno, Czech Republic, European Union
| | - Amitava Moulick
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, CZ-612 00, Brno, Czech Republic, European Union
| | - Hana Polanska
- Department of Physiology, Faculty of Medicine, Masaryk University, Kamenice 5, CZ-625 00, Brno, Czech Republic, European Union
| | - David Hynek
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00, Brno, Czech Republic, European Union.,Central European Institute of Technology, Brno University of Technology, Purkynova 123, CZ-612 00, Brno, Czech Republic, European Union
| | - Zbynek Heger
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00, Brno, Czech Republic, European Union.,Central European Institute of Technology, Brno University of Technology, Purkynova 123, CZ-612 00, Brno, Czech Republic, European Union
| | - Pavel Kopel
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00, Brno, Czech Republic, European Union.,Central European Institute of Technology, Brno University of Technology, Purkynova 123, CZ-612 00, Brno, Czech Republic, European Union
| | - Vojtech Adam
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00, Brno, Czech Republic, European Union.,Central European Institute of Technology, Brno University of Technology, Purkynova 123, CZ-612 00, Brno, Czech Republic, European Union
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187
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Biophysics in cancer: The relevance of drug-membrane interaction studies. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2016; 1858:2231-2244. [DOI: 10.1016/j.bbamem.2016.06.025] [Citation(s) in RCA: 116] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Revised: 05/31/2016] [Accepted: 06/26/2016] [Indexed: 12/26/2022]
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188
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Eike LM, Yang N, Rekdal Ø, Sveinbjørnsson B. The oncolytic peptide LTX-315 induces cell death and DAMP release by mitochondria distortion in human melanoma cells. Oncotarget 2016; 6:34910-23. [PMID: 26472184 PMCID: PMC4741498 DOI: 10.18632/oncotarget.5308] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Accepted: 10/01/2015] [Indexed: 02/01/2023] Open
Abstract
Host defense peptides (HDPs) are naturally occurring molecules found in most species, in which they play a significant role in the first line defense against intruding pathogens, and several HDPs have been shown to possess anticancer activity. Structure-activity relationship studies on the HDP bovine lactoferricin revealed a de novo design of a nonamer peptide LTX-315, with oncolytic properties. In the present study, we investigated the oncolytic activity of LTX-315 in human melanoma cells (A375). LTX-315 induced a rapid plasma membrane disruption and cell death within 2 hours. At a low concentration, fluorescence-labeled LTX-315 was internalized and accumulated in cytoplasmic vacuoles in close proximity to the mitochondria. The mitochondrial membrane potential was shown to depolarize as a consequence of LTX-315 treatment and at ultrastructural level, the mitochondria morphology was significantly altered. Release of danger signals (DAMPs) such as ATP, Cytochrome C and HMGB1 into the cell supernatant of cultured cells was evident minutes after peptide treatment. The oncolytic effect of LTX-315 involving perturbation of both the cell membrane and the mitochondria with subsequent release of DAMPs may highlight the ability of LTX-315 to induce complete regression and long-term protective immune responses as previously reported in experimental animal models.
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Affiliation(s)
- Liv-Marie Eike
- Department of Molecular Inflammation Research and Department of Medical Biology, Faculty of Health Sciences, University of Tromsø, Tromsø, Norway
| | - Nannan Yang
- Department of Community Medicine, Faculty of Health University of Tromsø, Tromsø, Norway
| | - Øystein Rekdal
- Department of Molecular Inflammation Research and Department of Medical Biology, Faculty of Health Sciences, University of Tromsø, Tromsø, Norway.,Lytix Biopharma, Oslo, Norway
| | - Baldur Sveinbjørnsson
- Department of Molecular Inflammation Research and Department of Medical Biology, Faculty of Health Sciences, University of Tromsø, Tromsø, Norway
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189
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Vallabhapurapu SD, Blanco VM, Sulaiman MK, Vallabhapurapu SL, Chu Z, Franco RS, Qi X. Variation in human cancer cell external phosphatidylserine is regulated by flippase activity and intracellular calcium. Oncotarget 2016; 6:34375-88. [PMID: 26462157 PMCID: PMC4741459 DOI: 10.18632/oncotarget.6045] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Accepted: 09/09/2015] [Indexed: 01/05/2023] Open
Abstract
Viable cancer cells expose elevated levels of phosphatidylserine (PS) on the exoplasmic face of the plasma membrane. However, the mechanisms leading to elevated PS exposure in viable cancer cells have not been defined. We previously showed that externalized PS may be used to monitor, target and kill tumor cells. In addition, PS on tumor cells is recognized by macrophages and has implications in antitumor immunity. Therefore, it is important to understand the molecular details of PS exposure on cancer cells in order to improve therapeutic targeting. Here we explored the mechanisms regulating the surface PS exposure in human cancer cells and found that differential flippase activity and intracellular calcium are the major regulators of surface PS exposure in viable human cancer cells. In general, cancer cell lines with high surface PS exhibited low flippase activity and high intracellular calcium, whereas cancer cells with low surface PS exhibited high flippase activity and low intracellular calcium. High surface PS cancer cells also had higher total cellular PS than low surface PS cells. Together, our results indicate that the amount of external PS in cancer cells is regulated by calcium dependent flippase activity and may also be influenced by total cellular PS.
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Affiliation(s)
- Subrahmanya D Vallabhapurapu
- Division of Hematology and Oncology, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Víctor M Blanco
- Division of Hematology and Oncology, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Mahaboob K Sulaiman
- Division of Hematology and Oncology, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Swarajya Lakshmi Vallabhapurapu
- Division of Hematology and Oncology, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Zhengtao Chu
- Division of Hematology and Oncology, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA.,Divison of Human Genetics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Robert S Franco
- Division of Hematology and Oncology, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Xiaoyang Qi
- Division of Hematology and Oncology, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA.,Divison of Human Genetics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
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190
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Tonk M, Vilcinskas A, Rahnamaeian M. Insect antimicrobial peptides: potential tools for the prevention of skin cancer. Appl Microbiol Biotechnol 2016; 100:7397-405. [PMID: 27418360 PMCID: PMC4980408 DOI: 10.1007/s00253-016-7718-y] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 06/27/2016] [Accepted: 06/29/2016] [Indexed: 12/18/2022]
Abstract
Antimicrobial peptides/proteins (AMPs) are biologically active molecules with diverse structural properties that are produced by mammals, plants, insects, ticks, and microorganisms. They have a range of antibacterial, antifungal, antiviral, and even anticancer activities, and their biological properties could therefore be exploited for therapeutic and prophylactic applications. Cancer and cancer drug resistance are significant current health challenges, so the development of innovative cancer drugs with minimal toxicity toward normal cells and novel modes of action that can evade resistance may provide a new direction for anticancer therapy. The skin is the first line of defense against heat, sunlight, injury, and infection, and skin cancer is thus the most common type of cancer. The skin that has been exposed to sunlight is particularly susceptible, but lesions can occur anywhere on the body. Skin cancer awareness and self-efficacy are necessary to improve sun protection behavior, but more effective preventative approaches are also required. AMPs may offer a new prophylactic approach against skin cancer. In this mini review, we draw attention to the potential use of insect AMPs for the prevention and treatment of skin cancer.
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Affiliation(s)
- Miray Tonk
- LOEWE Center for Insect Biotechnology and Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Winchester Strasse, 35394, Giessen, Germany
| | - Andreas Vilcinskas
- LOEWE Center for Insect Biotechnology and Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Winchester Strasse, 35394, Giessen, Germany.,Institute for Insect Biotechnology, Justus Liebig University of Giessen, Heinrich-Buff-Ring 26-32, 35392, Giessen, Germany
| | - Mohammad Rahnamaeian
- LOEWE Center for Insect Biotechnology and Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Winchester Strasse, 35394, Giessen, Germany.
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191
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Davis HW, Hussain N, Qi X. Detection of cancer cells using SapC-DOPS nanovesicles. Mol Cancer 2016; 15:33. [PMID: 27160923 PMCID: PMC4862232 DOI: 10.1186/s12943-016-0519-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Accepted: 05/03/2016] [Indexed: 12/15/2022] Open
Abstract
Unlike normal cells, cancer cells express high levels of phosphatidylserine on the extracellular leaflet of their cell membrane. Exploiting this characteristic, our lab developed a therapeutic agent that consists of the fusogenic protein, saposin C (SapC) which is embedded in dioleoylphosphatidylserine (DOPS) vesicles. These nanovesicles selectively target cancer cells and induce apoptosis. Here we review the data supporting use of SapC-DOPS to locate tumors for surgical resection or for treatment. In addition, there is important evidence suggesting that SapC-DOPS may also prove to be an effective novel cancer therapeutic reagent. Given that SapC-DOPS is easily labeled with lipophilic dyes, it has been combined with the far-red fluorescent dye, CellVue Maroon (CVM), for tumor targeting studies. We also have used contrast agents incorporated in the SapC-DOPS nanovesicles for computed tomography and magnetic resonance imaging, and review that data here. Administered intravenously, the fluorescently labeled SapC-DOPS traversed the blood–brain tumor barrier enabling identification of brain tumors. SapC-DOPS-CVM also detected a variety of other mouse tumors in vivo, rendering them observable by optical imaging using IVIS and multi-angle rotational optical imaging. Dye is detected within 30 min and remains within tumor for at least 7 days, whereas non-tumor tissues were unstained (some dye observed in the liver was transient, likely representing degradation products). Additionally, labeled SapC-DOPS ex vivo delineated tumors in human histological specimens. SapC-DOPS can also be labeled with contrast reagents for computed tomography or magnetic resonance imaging. In conclusion, labeled SapC-DOPS provides a convenient, specific, and nontoxic method for detecting tumors while concurrently offering a therapeutic benefit.
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Affiliation(s)
- Harold W Davis
- Division of Hematology/Oncology, Translational Medicine Laboratory, Department of Internal Medicine, University of Cincinnati College of Medicine, and Brain Tumor Center at UC Neuroscience Institute, 3512 Eden Avenue, Cincinnati, OH, 45267-0508, USA
| | - Nida Hussain
- Division of Hematology/Oncology, Translational Medicine Laboratory, Department of Internal Medicine, University of Cincinnati College of Medicine, and Brain Tumor Center at UC Neuroscience Institute, 3512 Eden Avenue, Cincinnati, OH, 45267-0508, USA
| | - Xiaoyang Qi
- Division of Hematology/Oncology, Translational Medicine Laboratory, Department of Internal Medicine, University of Cincinnati College of Medicine, and Brain Tumor Center at UC Neuroscience Institute, 3512 Eden Avenue, Cincinnati, OH, 45267-0508, USA. .,Division of Human Genetics, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.
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192
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Dalzini A, Bergamini C, Biondi B, De Zotti M, Panighel G, Fato R, Peggion C, Bortolus M, Maniero AL. The rational search for selective anticancer derivatives of the peptide Trichogin GA IV: a multi-technique biophysical approach. Sci Rep 2016; 6:24000. [PMID: 27039838 PMCID: PMC4819177 DOI: 10.1038/srep24000] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Accepted: 03/18/2016] [Indexed: 02/07/2023] Open
Abstract
Peptaibols are peculiar peptides produced by fungi as weapons against other microorganisms. Previous studies showed that peptaibols are promising peptide-based drugs because they act against cell membranes rather than a specific target, thus lowering the possibility of the onset of multi-drug resistance, and they possess non-coded α-amino acid residues that confer proteolytic resistance. Trichogin GA IV (TG) is a short peptaibol displaying antimicrobial and cytotoxic activity. In the present work, we studied thirteen TG analogues, adopting a multidisciplinary approach. We showed that the cytotoxicity is tuneable by single amino-acids substitutions. Many analogues maintain the same level of non-selective cytotoxicity of TG and three analogues are completely non-toxic. Two promising lead compounds, characterized by the introduction of a positively charged unnatural amino-acid in the hydrophobic face of the helix, selectively kill T67 cancer cells without affecting healthy cells. To explain the determinants of the cytotoxicity, we investigated the structural parameters of the peptides, their cell-binding properties, cell localization, and dynamics in the membrane, as well as the cell membrane composition. We show that, while cytotoxicity is governed by the fine balance between the amphipathicity and hydrophobicity, the selectivity depends also on the expression of negatively charged phospholipids on the cell surface.
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Affiliation(s)
- Annalisa Dalzini
- Dipartimento di Chimica, Università di Padova, via Marzolo 1, 35131, Padova, Italy
| | - Christian Bergamini
- Dipartimento di Farmacia e Biotecnologie, Università di Bologna, via Irnerio 48, 40126, Bologna, Italy
| | - Barbara Biondi
- Dipartimento di Chimica, Università di Padova, via Marzolo 1, 35131, Padova, Italy
| | - Marta De Zotti
- Dipartimento di Chimica, Università di Padova, via Marzolo 1, 35131, Padova, Italy
| | - Giacomo Panighel
- Dipartimento di Chimica, Università di Padova, via Marzolo 1, 35131, Padova, Italy
| | - Romana Fato
- Dipartimento di Farmacia e Biotecnologie, Università di Bologna, via Irnerio 48, 40126, Bologna, Italy
| | - Cristina Peggion
- Dipartimento di Chimica, Università di Padova, via Marzolo 1, 35131, Padova, Italy
| | - Marco Bortolus
- Dipartimento di Chimica, Università di Padova, via Marzolo 1, 35131, Padova, Italy.,Dipartimento di Scienza dei Materiali, Università degli Studi di Milano Bicocca, 20126, Milano, Italy
| | - Anna Lisa Maniero
- Dipartimento di Chimica, Università di Padova, via Marzolo 1, 35131, Padova, Italy
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193
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Docetaxel Combined With Bavituximab in Previously Treated, Advanced Nonsquamous Non-Small-Cell Lung Cancer. Clin Lung Cancer 2016; 17:169-76. [PMID: 27265742 DOI: 10.1016/j.cllc.2016.02.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Revised: 02/05/2016] [Accepted: 02/09/2016] [Indexed: 12/21/2022]
Abstract
BACKGROUND Bavituximab is a phosphatidylserine-targeting antibody with a selective tumor, vascular-directed immune response. In this phase II trial the efficacy and safety of bavituximab combined with docetaxel for previously treated, advanced nonsquamous non-small-cell lung cancer were evaluated. PATIENTS AND METHODS Patients were randomized 1:1:1 to receive docetaxel 75 mg/m(2) every 21 days for up to 6 cycles combined with weekly, blinded infusions of placebo, bavituximab 1 mg/kg, or bavituximab 3 mg/kg until disease progression or unacceptable toxicity. The primary end point was overall response rate (ORR), with a predefined end point of 26% in the bavituximab arms. After study unblinding, vial-coding discrepancies were discovered in the placebo and bavituximab 1 mg/kg groups. In exploratory analyses, data from these groups were pooled to form the control group and compared with the 3 mg/kg group. RESULTS Efficacy end points in the bavituximab 3 mg/kg group (n = 41) and in the placebo/bavituximab 1 mg/kg group (n = 80), respectively, were as follows: ORR, 17.1% (95% confidence interval [CI], 5.6%-28.6%) and ORR, 11.3% (95% CI, 4.3%-18.2%); median progression-free survival 4.5 and 3.3 months (hazard ratio [HR], 0.74 [95% CI, 0.45-1.21]; P = .24); median overall survival 11.7 and 7.3 months (HR, 0.66 [95% CI, 0.40-1.10]; P = .11). Toxicities were manageable and similar between arms. CONCLUSION The combination of bavituximab and docetaxel is well tolerated. Although no firm efficacy conclusions can be drawn and the trial did not meet the predefined primary end point, exploratory analyses suggest trends favoring the combination of bavituximab 3 mg/kg with docetaxel. This regimen is being evaluated in the ongoing, global, phase III SUNRISE trial.
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194
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PFR peptide, one of the antimicrobial peptides identified from the derivatives of lactoferrin, induces necrosis in leukemia cells. Sci Rep 2016; 6:20823. [PMID: 26860588 PMCID: PMC4748414 DOI: 10.1038/srep20823] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Accepted: 01/12/2016] [Indexed: 12/13/2022] Open
Abstract
LF11-322 (PFWRIRIRR-NH2) (PFR peptide), a nine amino acid-residue peptide fragment derived from human lactoferricin, possesses potent cytotoxicity against bacteria. We report here the discovery and characterization of its antitumor activity in leukemia cells. PFR peptide inhibited the proliferation of MEL and HL-60 leukemia cells by inducing cell death in the absence of the classical features of apoptosis, including chromatin condensation, Annexin V staining, Caspase activation and increase of abundance of pro-apoptotic proteins. Instead, necrotic cell death as evidenced by increasing intracellular PI staining and LDH release, inducing membrane disruption and up-regulating intracellular calcium level, was observed following PFR peptide treatment. In addition to necrotic cell death, PFR peptide also induced G0/G1 cell cycle arrest. Moreover, PFR peptide exhibited favorable antitumor activity and tolerability in vivo. These findings thus provide a new clue of antimicrobial peptides as a potential novel therapy for leukemia.
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195
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Gabernet G, Müller AT, Hiss JA, Schneider G. Membranolytic anticancer peptides. MEDCHEMCOMM 2016. [DOI: 10.1039/c6md00376a] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Understanding the structure–activity relationships and mechanisms of action of membranolytic anticancer peptides could help them advance to therapeutic success.
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Affiliation(s)
- G. Gabernet
- Department of Chemistry and Applied Biosciences
- Swiss Federal Institute of Technology (ETH)
- CH-8093 Zurich
- Switzerland
| | - A. T. Müller
- Department of Chemistry and Applied Biosciences
- Swiss Federal Institute of Technology (ETH)
- CH-8093 Zurich
- Switzerland
| | - J. A. Hiss
- Department of Chemistry and Applied Biosciences
- Swiss Federal Institute of Technology (ETH)
- CH-8093 Zurich
- Switzerland
| | - G. Schneider
- Department of Chemistry and Applied Biosciences
- Swiss Federal Institute of Technology (ETH)
- CH-8093 Zurich
- Switzerland
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196
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Hosseini A, Soleimani S, Pezeshgi Modarres H, Hojjati Emami S, Tondar M, Bahlakeh G, Hasani-Sadrabadi MM. Exosome-inspired targeting of cancer cells with enhanced affinity. J Mater Chem B 2016; 4:768-778. [DOI: 10.1039/c5tb01741f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Herein the combination of molecular dynamics simulations and experimental frameworks for mimicking the exosomes to build next generation cancer nanomedicine is presented.
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Affiliation(s)
- A. Hosseini
- Center of Excellence in Biomaterials
- Department of Biomedical Engineering
- Amirkabir University of Technology
- Tehran
- Iran
| | - Sh. Soleimani
- Center of Excellence in Biomaterials
- Department of Biomedical Engineering
- Amirkabir University of Technology
- Tehran
- Iran
| | - H. Pezeshgi Modarres
- Institute of Bioengineering
- École Polytechnique Fédérale de Lausanne (EPFL)
- Lausanne
- Switzerland
| | - Sh. Hojjati Emami
- Center of Excellence in Biomaterials
- Department of Biomedical Engineering
- Amirkabir University of Technology
- Tehran
- Iran
| | - M. Tondar
- Department of Biochemistry and Molecular & Cellular Biology
- School of Medicine
- Georgetown University
- Washington D.C
- USA
| | - G. Bahlakeh
- Department of Engineering and Technology
- Golestan University
- Aliabad Katool
- Iran
| | - M. M. Hasani-Sadrabadi
- Center of Excellence in Biomaterials
- Department of Biomedical Engineering
- Amirkabir University of Technology
- Tehran
- Iran
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197
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Krauson AJ, Hall OM, Fuselier T, Starr CG, Kauffman WB, Wimley WC. Conformational Fine-Tuning of Pore-Forming Peptide Potency and Selectivity. J Am Chem Soc 2015; 137:16144-52. [PMID: 26632653 PMCID: PMC4697923 DOI: 10.1021/jacs.5b10595] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
To better understand the sequence-structure-function relationships that control the activity and selectivity of membrane-permeabilizing peptides, we screened a peptide library, based on the archetypal pore-former melittin, for loss-of-function variants. This was accomplished by assaying library members for failure to cause leakage of entrapped contents from synthetic lipid vesicles at a peptide-to-lipid ratio of 1:20, 10-fold higher than the concentration at which melittin efficiently permeabilizes the same vesicles. Surprisingly, about one-third of the library members are inactive under these conditions. In the negative peptides, two changes of hydrophobic residues to glycine were especially abundant. We show that loss-of-function activity can be completely recapitulated by a single-residue change of the leucine at position 16 to glycine. Unlike the potently cytolytic melittin, the loss-of-function peptides, including the single-site variant, are essentially inactive against phosphatidylcholine vesicles and multiple types of eukaryotic cells. Loss of function is shown to result from a shift in the binding-folding equilibrium away from the active, bound, α-helical state toward the inactive, unbound, random-coil state. Accordingly, the addition of anionic lipids to synthetic lipid vesicles restored binding, α-helical secondary structure, and potent activity of the "negative" peptides. While nontoxic to mammalian cells, the single-site variant has potent bactericidal activity, consistent with the anionic nature of bacterial membranes. The results show that conformational fine-tuning of helical pore-forming peptides is a powerful way to modulate their activity and selectivity.
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Affiliation(s)
- Aram J Krauson
- Department of Biochemistry and Molecular Biology, Tulane University School of Medicine , New Orleans, Louisiana 70112, United States
| | - O Morgan Hall
- Department of Biochemistry and Molecular Biology, Tulane University School of Medicine , New Orleans, Louisiana 70112, United States
| | - Taylor Fuselier
- Department of Biochemistry and Molecular Biology, Tulane University School of Medicine , New Orleans, Louisiana 70112, United States
| | - Charles G Starr
- Department of Biochemistry and Molecular Biology, Tulane University School of Medicine , New Orleans, Louisiana 70112, United States
| | - W Berkeley Kauffman
- Department of Biochemistry and Molecular Biology, Tulane University School of Medicine , New Orleans, Louisiana 70112, United States
| | - William C Wimley
- Department of Biochemistry and Molecular Biology, Tulane University School of Medicine , New Orleans, Louisiana 70112, United States
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198
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Matharage JM, Minna JD, Brekken RA, Udugamasooriya DG. Unbiased Selection of Peptide-Peptoid Hybrids Specific for Lung Cancer Compared to Normal Lung Epithelial Cells. ACS Chem Biol 2015; 10:2891-9. [PMID: 26509598 DOI: 10.1021/acschembio.5b00592] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
To develop widely applicable diagnostic and potentially therapeutic approaches overcoming protein heterogeneity in human cancer, we have developed a technology to unbiasedly select high specificity compound(s) that bind any biomolecule (e.g., proteins, lipids, carbohydrates) presented on the cancer cell surface but not on normal cells. We utilized a peptidomimetic based on-bead two-color (OBTC) combinatorial cell screen that can detect differences between two cell surfaces at high accuracy by looking for beads (where each bead in the library had one peptide-peptoid hybrid on the surface) that only bound cancer but not normal cells. We screened a library of 393 216 compounds targeting HCC4017 lung adenocarcinoma cells (labeled in red) in the presence of HBEC30KT normal bronchial epithelial cells (labeled in green) derived from the same tissue of the same patient. This screen identified a peptide-peptoid hybrid called PPS1 which displayed high specific binding for HCC4017 cancer cells over HBEC30KT cells. Specificity was validated through on-bead, ELISA-like and magnetic bead pulldown studies, while a scrambled version of PPS1 did not show any binding. Of interest, the simple dimeric version (PPS1D1) displayed cytotoxic activity on HCC4017 cells, but not on normal HBEC30KT cells. PPS1D1 also strongly accumulated in HCC4017 lung cancer xenografts in mice over control constructs. We conclude that such combinatorial screens using tumor and normal cells from the same patient have significant potential to develop new reagents for cancer biology, diagnosis, and potentially therapy.
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Affiliation(s)
- Jaya M. Matharage
- Advanced Imaging Research Center, ‡Simmons Comprehensive
Cancer Center, §Hamon Center for Therapeutic
Oncology Research, ∥Departments of Biochemistry, ⊥Pharmacology, #Internal Medicine, and ▽Surgery, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, Texas 75390, United States
| | - John D. Minna
- Advanced Imaging Research Center, ‡Simmons Comprehensive
Cancer Center, §Hamon Center for Therapeutic
Oncology Research, ∥Departments of Biochemistry, ⊥Pharmacology, #Internal Medicine, and ▽Surgery, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, Texas 75390, United States
| | - Rolf A. Brekken
- Advanced Imaging Research Center, ‡Simmons Comprehensive
Cancer Center, §Hamon Center for Therapeutic
Oncology Research, ∥Departments of Biochemistry, ⊥Pharmacology, #Internal Medicine, and ▽Surgery, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, Texas 75390, United States
| | - D. Gomika Udugamasooriya
- Advanced Imaging Research Center, ‡Simmons Comprehensive
Cancer Center, §Hamon Center for Therapeutic
Oncology Research, ∥Departments of Biochemistry, ⊥Pharmacology, #Internal Medicine, and ▽Surgery, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, Texas 75390, United States
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199
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Wang C, Chen YW, Zhang L, Gong XG, Zhou Y, Shang DJ. Melanoma cell surface-expressed phosphatidylserine as a therapeutic target for cationic anticancer peptide, temporin-1CEa. J Drug Target 2015; 24:548-56. [PMID: 26596643 DOI: 10.3109/1061186x.2015.1113539] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
We have previously reported that temporin-1CEa, a cationic antimicrobial peptide, exerts preferential cytotoxicity toward cancer cells. However, the exact molecular mechanism for this cancer-selectivity is still largely unknown. Here, we found that the negatively charged phosphatidylserine (PS) expressed on cancer cell surface serves as a target for temporin-1CEa. Our results indicate that human A375 melanoma cells express 50-fold more PS than non-cancerous HaCaT cells. The expression of cell surface PS in various cancer cell lines closely correlated with their ability to be recognized, bound and killed by temporin-1CEa. Additionally, the cytotoxicity of temporin-1CEa against A375 cells can be ameliorated by annexin V, which binds to cell surface PS with high affinity. Moreover, the data of isothermal titration calorimetry assay further confirmed a direct binding of temporin-1CEa to PS, at a ratio of 1:5 (temporin-1CEa:PS). Interestingly, the circular dichroism spectra analysis using artificial biomembrane revealed that PS not only provides electrostatic attractive sites for temporin-1CEa but also confers the membrane-bound temporin-1CEa to form α-helical structure, therefore, enhances the affinity and membrane disrupting ability of temporin-1CEa. In summary, these findings suggested that the melanoma cells expressed PS may serve as a promising target for temporin-1CEa or other cationic anticancer peptides.
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Affiliation(s)
- Che Wang
- a Department of Pharmacy , School of Chemistry and Chemical Engineering, Liaoning Normal University , Dalian , China and.,b Liaoning Provincial Key Laboratory of Biotechnology and Drug Discovery , School of Life Science, Liaoning Normal University , Dalian , China
| | - Yin-Wang Chen
- a Department of Pharmacy , School of Chemistry and Chemical Engineering, Liaoning Normal University , Dalian , China and
| | - Liang Zhang
- a Department of Pharmacy , School of Chemistry and Chemical Engineering, Liaoning Normal University , Dalian , China and
| | - Xian-Ge Gong
- b Liaoning Provincial Key Laboratory of Biotechnology and Drug Discovery , School of Life Science, Liaoning Normal University , Dalian , China
| | - Yang Zhou
- a Department of Pharmacy , School of Chemistry and Chemical Engineering, Liaoning Normal University , Dalian , China and
| | - De-Jing Shang
- b Liaoning Provincial Key Laboratory of Biotechnology and Drug Discovery , School of Life Science, Liaoning Normal University , Dalian , China
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200
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Ravipati AS, Henriques ST, Poth AG, Kaas Q, Wang CK, Colgrave ML, Craik DJ. Lysine-rich Cyclotides: A New Subclass of Circular Knotted Proteins from Violaceae. ACS Chem Biol 2015; 10:2491-500. [PMID: 26322745 DOI: 10.1021/acschembio.5b00454] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Cyclotides are macrocyclic proteins produced by plants for host defense. Although they occur sparsely in other plant families, cyclotides have been detected in every Violaceae plant species so far screened. Many of the Violaceae species examined until now have been from closely related geographical regions or habitats. To test the hypothesis that cyclotides are ubiquitous in this family, two geographically isolated (and critically endangered) species of Australasian Violaceae, namely Melicytus chathamicus and M. latifolius, were examined. Surprisingly, we discovered a suite of cyclotides possessing novel sequence features, including a lysine-rich nature, distinguishing them from "conventional" cyclotides and suggesting that they might have different physiological activities in plants to those reported to date. The newly discovered cyclotides were found to bind to lipid membranes and were cytotoxic against cancer cell lines but had low toxicity against red blood cells, which is advantageous for potential therapeutic applications. This suite of novel Lys-rich cyclotides emphasizes the broad diversity of cyclotides in Violaceae species.
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Affiliation(s)
- Anjaneya S. Ravipati
- Institute
for Molecular Bioscience, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Sónia Troeira Henriques
- Institute
for Molecular Bioscience, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Aaron G. Poth
- Institute
for Molecular Bioscience, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Quentin Kaas
- Institute
for Molecular Bioscience, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Conan K. Wang
- Institute
for Molecular Bioscience, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Michelle L. Colgrave
- Commonwealth Scientific and Industrial Research Organization, Agriculture Flagship, St. Lucia, Queensland 4067, Australia
| | - David J. Craik
- Institute
for Molecular Bioscience, The University of Queensland, Brisbane, Queensland 4072, Australia
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