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Liu H, Shen W, Liu W, Yang Z, Yin D, Xiao C. From oncolytic peptides to oncolytic polymers: A new paradigm for oncotherapy. Bioact Mater 2024; 31:206-230. [PMID: 37637082 PMCID: PMC10450358 DOI: 10.1016/j.bioactmat.2023.08.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 07/18/2023] [Accepted: 08/08/2023] [Indexed: 08/29/2023] Open
Abstract
Traditional cancer therapy methods, especially those directed against specific intracellular targets or signaling pathways, are not powerful enough to overcome tumor heterogeneity and therapeutic resistance. Oncolytic peptides that can induce membrane lysis-mediated cancer cell death and subsequent anticancer immune responses, has provided a new paradigm for cancer therapy. However, the clinical application of oncolytic peptides is always limited by some factors such as unsatisfactory bio-distribution, poor stability, and off-target toxicity. To overcome these limitations, oncolytic polymers stand out as prospective therapeutic materials owing to their high stability, chemical versatility, and scalable production capacity, which has the potential to drive a revolution in cancer treatment. This review provides an overview of the mechanism and structure-activity relationship of oncolytic peptides. Then the oncolytic peptides-mediated combination therapy and the nano-delivery strategies for oncolytic peptides are summarized. Emphatically, the current research progress of oncolytic polymers has been highlighted. Lastly, the challenges and prospects in the development of oncolytic polymers are discussed.
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Affiliation(s)
- Hanmeng Liu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, 230012, China
| | - Wei Shen
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, 230012, China
- Anhui Province Key Laboratory of Pharmaceutical Preparation Technology and Application, Hefei, Anhui, 230012, China
- Engineering Technology Research Center of Modernized Pharmaceutics, Anhui Education Department (AUCM), Hefei, Anhui, 230012, China
| | - Wanguo Liu
- Department of Orthopaedic Surgery, China-Japan Union Hospital, Jilin University, Changchun, 130033, China
| | - Zexin Yang
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, 230012, China
| | - Dengke Yin
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, 230012, China
- Engineering Technology Research Center of Modernized Pharmaceutics, Anhui Education Department (AUCM), Hefei, Anhui, 230012, China
| | - Chunsheng Xiao
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
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2
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Akonnor A, Makise M, Kuniyasu A. CXCR4-Targeted Necrosis-Inducing Peptidomimetic for Treating Breast Cancer. ACS OMEGA 2023; 8:24467-24476. [PMID: 37457445 PMCID: PMC10339399 DOI: 10.1021/acsomega.3c02415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 06/13/2023] [Indexed: 07/18/2023]
Abstract
Triple-negative breast cancer is an aggressive subtype with a high recurrence rate, potential for metastasis, and a poor prognosis. The chemokine receptor, CXCR4, is a promising molecular target in breast cancer therapy. Here, we have developed a CXCR4-targeted antitumor peptidomimetic (named CTCE-KLAK), which is a fusion of the CXCR4 receptor antagonist CTCE-9908 and the D-form of proapoptotic peptide (KLAKLAK)2, for the treatment of breast cancer. First, we investigated the in vitro antitumor activity of CTCE-KLAK against various breast cancer cells and noncancerous mammary epithelial cells. CTCE-KLAK showed cell-selective cytotoxicity and induced rapid necrotic cell death in breast cancer cells but not in normal cells. In contrast, unconjugated peptides such as the carboxylate analogues of CTCE-9908 and D(KLAKLAK)2 were not cytotoxic to these cells. The tumor selectivity of CTCE-KLAK for cytotoxic activity depends on its internalization into tumor cells. There was no cleavage of caspase-3, caspase-7, or PARP1 in CTCE-KLAK-treated cells. In addition, cell death by CTCE-KLAK was not prevented by z-VAD-fmk, a pan-caspase inhibitor that inhibits cisplatin-induced cell death. These data indicate that the CTCE-KLAK conjugate is a cell-selective inducer of necrosis. Furthermore, we evaluated the in vivo antitumor activity of CTCE-KLAK in the 4T1 mouse metastatic breast cancer model. Intravenous administration of CTCE-KLAK significantly inhibited tumor growth and lung metastasis. Together, these findings suggest that the necrosis-inducing peptidomimetic CTCE-KLAK is a promising CXCR4-targeted agent for treating triple-negative breast cancer.
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Pierzynowska K, Morcinek-Orłowska J, Gaffke L, Jaroszewicz W, Skowron PM, Węgrzyn G. Applications of the phage display technology in molecular biology, biotechnology and medicine. Crit Rev Microbiol 2023:1-41. [PMID: 37270791 DOI: 10.1080/1040841x.2023.2219741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 10/17/2022] [Accepted: 05/25/2023] [Indexed: 06/06/2023]
Abstract
The phage display technology is based on the presentation of peptide sequences on the surface of virions of bacteriophages. Its development led to creation of sophisticated systems based on the possibility of the presentation of a huge variability of peptides, attached to one of proteins of bacteriophage capsids. The use of such systems allowed for achieving enormous advantages in the processes of selection of bioactive molecules. In fact, the phage display technology has been employed in numerous fields of biotechnology, as diverse as immunological and biomedical applications (in both diagnostics and therapy), the formation of novel materials, and many others. In this paper, contrary to many other review articles which were focussed on either specific display systems or the use of phage display in selected fields, we present a comprehensive overview of various possibilities of applications of this technology. We discuss an usefulness of the phage display technology in various fields of science, medicine and the broad sense of biotechnology. This overview indicates the spread and importance of applications of microbial systems (exemplified by the phage display technology), pointing to the possibility of developing such sophisticated tools when advanced molecular methods are used in microbiological studies, accompanied with understanding of details of structures and functions of microbial entities (bacteriophages in this case).
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Affiliation(s)
- Karolina Pierzynowska
- Department of Molecular Biology, Faculty of Biology, University of Gdansk, Gdansk, Poland
| | | | - Lidia Gaffke
- Department of Molecular Biology, Faculty of Biology, University of Gdansk, Gdansk, Poland
| | - Weronika Jaroszewicz
- Department of Molecular Biology, Faculty of Biology, University of Gdansk, Gdansk, Poland
| | - Piotr M Skowron
- Department of Molecular Biotechnology, Faculty of Chemistry, University of Gdansk, Gdańsk, Poland
| | - Grzegorz Węgrzyn
- Department of Molecular Biology, Faculty of Biology, University of Gdansk, Gdansk, Poland
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4
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Sioud M, Olberg A. Antibody Surface Profiling Identifies Glycoforms in Multiple Myeloma as Targets for Immunotherapy: From Antibody Derivatives to Mimetic Peptides for Killing Tumor Cells. Cancers (Basel) 2023; 15:cancers15071934. [PMID: 37046595 PMCID: PMC10093763 DOI: 10.3390/cancers15071934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 03/15/2023] [Accepted: 03/18/2023] [Indexed: 04/14/2023] Open
Abstract
Despite therapeutic advances in recent years, there are still unmet medical needs for patients with multiple myeloma (MM). Hence, new therapeutic strategies are needed. Using phage display for screening a large repertoire of single chain variable fragments (scFvs), we isolated several candidates that recognize a heavily sulfated MM-specific glycoform of the surface antigen syndecan-1 (CD138). One of the engineered scFv-Fc antibodies, named MM1, activated NK cells and induced antibody-dependent cellular cytotoxicity against MM cells. Analysis of the binding specificity by competitive binding assays with various glycan ligands identified N-sulfation of glucosamine units as essential for binding. Additionally, site-directed mutagenesis revealed that the amino acids arginine and histidine in the complementarily determining regions (CDRs) 2 and 3 of the heavy chain are important for binding. Based on this observation, a heavy-chain antibody, known as a nanobody, and a peptide mimicking the CDR loop sequences were designed. Both variants exhibited high affinity and specificity to MM cells as compared to blood lymphocytes. Specific killing of MM cells was achieved by conjugating the CDR2/3 mimic peptide to a pro-apoptotic peptide (KLAKLAK)2. In a co-culture model, the fusion peptide killed MM cells, while leaving normal peripheral blood mononuclear cells unaffected. Collectively, the development of antibodies and peptides that detect tumor-specific glycoforms of therapeutic targets holds promise for improving targeted therapies and tumor imaging.
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Affiliation(s)
- Mouldy Sioud
- Department of Cancer Immunology, Division of Cancer Medicine, Oslo University Hospital-Radiumhospitalet, Ullernchausseen 70, 0379 Oslo, Norway
| | - Anniken Olberg
- Department of Cancer Immunology, Division of Cancer Medicine, Oslo University Hospital-Radiumhospitalet, Ullernchausseen 70, 0379 Oslo, Norway
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Platts K, Michel R, Green E, Gillam T, Ghetia M, O'Brien-Simpson N, Li W, Blencowe C, Blencowe A. Pentafulvene-Maleimide Cycloaddition for Bioorthogonal Ligation. Bioconjug Chem 2021; 32:1845-1851. [PMID: 34254789 DOI: 10.1021/acs.bioconjchem.1c00287] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The applications of bioconjugation chemistry are rapidly expanding, and the addition of new strategies to the bioconjugation and ligation toolbox will further advance progress in this field. Herein, we present a detailed study of the Diels-Alder cycloaddition (DAC) reaction between pentafulvenes and maleimides in aqueous solutions and investigate the reaction as an emerging bioconjugation strategy. The DAC reactions were found to proceed efficiently, quantitatively yielding cycloadducts with reaction rates ranging up to ∼0.7 M-1 s-1 for a series of maleimides, including maleimide-derivatized peptides and proteins. The absence of cross-reactivity of the pentafulvene with a large panel of functional (bio)molecules and biological media further demonstrated the bioorthogonality of this approach. The utility of the DAC reaction for bioorthogonal bioconjugation applications was further demonstrated in the presence of biological media and proteins, as well as through protein derivatization and labeling, which was comparable to the widely employed sulfhydryl-maleimide coupling chemistry.
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Affiliation(s)
- Kirsten Platts
- Applied Chemistry and Translational Biomaterials (ACTB) Group, Clinical and Health Sciences, University of South Australia, Adelaide, South Australia 5000, Australia
| | - Robert Michel
- Fleet Bioprocessing, Ltd., Pale Lane, Hartley Whitney, Hampshire RG27 8DH, United Kingdom
| | - Elise Green
- Fleet Bioprocessing, Ltd., Pale Lane, Hartley Whitney, Hampshire RG27 8DH, United Kingdom
| | - Todd Gillam
- Applied Chemistry and Translational Biomaterials (ACTB) Group, Clinical and Health Sciences, University of South Australia, Adelaide, South Australia 5000, Australia.,Surface Interactions and Soft Matter (SISM) Group, Future Industries Institute, University of South Australia, Mawson Lakes, South Australia 5095, Australia
| | - Maulik Ghetia
- Clinical and Health Sciences, University of South Australia, Adelaide, South Australia 5000, Australia
| | - Neil O'Brien-Simpson
- Centre for Oral Health Research, The Melbourne Dental School and the Bio21 Institute, The University of Melbourne, 720 Swanston Street, Carlton, Melbourne, Victoria 3010, Australia
| | - Wenyi Li
- Centre for Oral Health Research, The Melbourne Dental School and the Bio21 Institute, The University of Melbourne, 720 Swanston Street, Carlton, Melbourne, Victoria 3010, Australia
| | - Christopher Blencowe
- Fleet Bioprocessing, Ltd., Pale Lane, Hartley Whitney, Hampshire RG27 8DH, United Kingdom
| | - Anton Blencowe
- Applied Chemistry and Translational Biomaterials (ACTB) Group, Clinical and Health Sciences, University of South Australia, Adelaide, South Australia 5000, Australia
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6
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Kim YJ, Ha JH, Kim YJ. Self-assembled polymeric micelles for targeted photodynamic therapy of human epidermal growth factor receptor 2 overexpressing breast cancer. NANOTECHNOLOGY 2021; 32:275101. [PMID: 33780921 DOI: 10.1088/1361-6528/abf2fe] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 03/29/2021] [Indexed: 06/12/2023]
Abstract
Photodynamic therapy (PDT) has been extensively explored as a promising alternative therapeutic approach for many malignant tumors. However, the PDT system generally involves unsatisfactory tumor specificity and nonspecific accumulation of photosensitizers around the target cancer cells, leading to phototoxic damage to adjacent healthy normal cells. In this study, we developed pheophorbide a (Pheo a)/human epidermal growth factor receptor 2 (HER2) targeting peptide (epitope form, HLTV, PEG2-LTVSPWY)-co-conjugated methoxy poly(ethylene glycol)-block-poly(L-lysine hydrochloride) (PEG-PLL)/hyaluronic acid (HA) (P3H2) polymeric micelles via a self-assembly method for HER2-targeted PDT treatment for breast cancer, thereby enhancing the PDT efficacy. The synthesized P3H2 polymeric micelles were spherical, with an average diameter of 125.7 ± 21.2 nm in an aqueous solution. The results ofin vitrocytotoxicity assays demonstrated that the P3H2 polymeric micelles significantly improved PDT efficacy on the SK-BR-3 cells due to the enhanced targeting ability. In addition, PDT treatment using the P3H2 polymeric micelles effectively killed breast cancer cells by inducing higher intracellular reactive oxygen species generation and apoptotic cell death. In particular, the three-dimensional cell culture model proved the synergistic PDT efficacy using P3H2 polymeric micelles on the SK-BR-3 cells. Based on these results, the PDT treatment using P3H2 polymeric micelles can serve as a highly effective therapeutic modality for breast cancer.
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Affiliation(s)
- Young-Jin Kim
- Department of Biomedical Engineering, Daegu Catholic University, Gyeongsan 38430, Republic of Korea
| | - Ji-Hui Ha
- Department of Biomedical Engineering, Daegu Catholic University, Gyeongsan 38430, Republic of Korea
| | - Ye-Ji Kim
- Department of Biomedical Engineering, Daegu Catholic University, Gyeongsan 38430, Republic of Korea
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7
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Carvalho IC, Mansur AAP, Carvalho SM, Mansur HS. Nanotheranostics through Mitochondria-targeted Delivery with Fluorescent Peptidomimetic Nanohybrids for Apoptosis Induction of Brain Cancer Cells. Nanotheranostics 2021; 5:213-239. [PMID: 33614399 PMCID: PMC7893535 DOI: 10.7150/ntno.54491] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 01/26/2021] [Indexed: 01/23/2023] Open
Abstract
Overview: Malignant brain tumors remain one of the greatest challenges faced by health professionals and scientists among the utmost lethal forms of cancer. Nanotheranostics can play a pivotal role in developing revolutionary nanoarchitectures with multifunctional and multimodal capabilities to fight cancer. Mitochondria are vital organelles to eukaryotic cells, which have been recognized as a significant target in cancer therapy where, by damaging the mitochondria, it will cause irreparable cell death or apoptosis. Methods: We designed and produced novel hybrid nanostructures comprising a fluorescent semiconductor core (AgInS2, AIS) and cysteine-modified carboxymethylcellulose (termed thiomer, CMC_Cys) conjugated with mitochondria-targeting peptides (KLA) forming a macromolecular shell for combining bioimaging and for inducing brain cancer cell (U-87 MG) death. Results: The optical and physicochemical properties of the nanoconjugates demonstrated suitability as photoluminescent nanostructures for cell bioimaging and intracellular tracking. Additionally, the results proved a remarkable killing activity towards glioblastoma cells of cysteine-bearing CMC conjugates coupled with KLA peptides through the half-maximal effective concentration values, approximately 70-fold higher compared to the conjugate analogs without Cys residues. Moreover, these thiomer-based pro-apoptotic drug nanoconjugates displayed higher lethality against U-87 MG cancer cells than doxorubicin, a model drug in chemotherapy, although extremely toxic. Remarkably, these peptidomimetic nanohybrids demonstrated a relative "protective effect" regarding healthy cells while maintaining high killing activity towards malignant brain cells. Conclusion: These findings pave the way for developing hybrid nanoarchitectures applied as targeted multifunctional platforms for simultaneous imaging and therapy against cancer while minimizing the high systemic toxicity and side-effects of conventional drugs in anticancer chemotherapy.
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Affiliation(s)
| | | | | | - Herman S. Mansur
- Center of Nanoscience, Nanotechnology, and Innovation - CeNano2I, Department of Metallurgical and Materials Engineering, Federal University of Minas Gerais - UFMG, Av. Antônio Carlos, 6627 - Belo Horizonte/MG, Brazil
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8
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Moody TW, Lee L, Ramos-Alvarez I, Iordanskaia T, Mantey SA, Jensen RT. Bombesin Receptor Family Activation and CNS/Neural Tumors: Review of Evidence Supporting Possible Role for Novel Targeted Therapy. Front Endocrinol (Lausanne) 2021; 12:728088. [PMID: 34539578 PMCID: PMC8441013 DOI: 10.3389/fendo.2021.728088] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Accepted: 08/02/2021] [Indexed: 12/13/2022] Open
Abstract
G-protein-coupled receptors (GPCRs) are increasingly being considered as possible therapeutic targets in cancers. Activation of GPCR on tumors can have prominent growth effects, and GPCRs are frequently over-/ectopically expressed on tumors and thus can be used for targeted therapy. CNS/neural tumors are receiving increasing attention using this approach. Gliomas are the most frequent primary malignant brain/CNS tumor with glioblastoma having a 10-year survival <1%; neuroblastomas are the most common extracranial solid tumor in children with long-term survival<40%, and medulloblastomas are less common, but one subgroup has a 5-year survival <60%. Thus, there is an increased need for more effective treatments of these tumors. The Bombesin-receptor family (BnRs) is one of the GPCRs that are most frequently over/ectopically expressed by common tumors and is receiving particular attention as a possible therapeutic target in several tumors, particularly in prostate, breast, and lung cancer. We review in this paper evidence suggesting why a similar approach in some CNS/neural tumors (gliomas, neuroblastomas, medulloblastomas) should also be considered.
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Affiliation(s)
- Terry W. Moody
- Department of Health and Human Services, National Cancer Institute, Center for Cancer Training, Office of the Director, Bethesda, MD, United States
| | - Lingaku Lee
- Digestive Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, United States
- Department of Gastroenterology, National Hospital Organization Kyushu Cancer Center, Fukuoka, Japan
| | - Irene Ramos-Alvarez
- Digestive Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, United States
| | - Tatiana Iordanskaia
- Digestive Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, United States
| | - Samuel A. Mantey
- Digestive Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, United States
| | - Robert T. Jensen
- Digestive Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, United States
- *Correspondence: Robert T. Jensen,
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Kim MS, Ma S, Chelariu-Raicu A, Leuschner C, Alila HW, Lee S, Coleman RL, Sood AK. Enhanced Immunotherapy with LHRH-R Targeted Lytic Peptide in Ovarian Cancer. Mol Cancer Ther 2020; 19:2396-2406. [PMID: 32943548 DOI: 10.1158/1535-7163.mct-20-0030] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 06/08/2020] [Accepted: 08/26/2020] [Indexed: 11/16/2022]
Abstract
Here, we examined the role of EP-100 [luteinizing hormone-releasing hormone (LHRH) ligand joined to a lytic peptide], improving the efficacy of immune checkpoint blockade. LHRH-R-positive murine ovarian cancer cells (ID8, IG10, IF5, and 2C12) were sensitive to EP-100 and were specifically killed at low micromolar levels through LHRH-R. EP-100 increased PD-L1 levels on murine ovarian cancer cells. In vivo syngeneic mouse models (ID8 and IG10) demonstrated that single-agent EP-100 reduced tumor volume, tumor weight, and ascites volume. The greatest reductions in tumor and ascites volume were observed with the combination of EP-100 with an anti-PD-L1 antibody. Immune profiling analysis showed that the population of CD8+ T cells, natural killer cells, dendritic cells, and macrophages were significantly increased in tumor and ascitic fluid samples treated with anti-PD-L1, EP-100, and the combination. However, monocytic myeloid suppressor cells, B cells, and regulatory T cells were decreased in tumors treated with anti-PD-L1, EP-100, or the combination. In vitro cytokine arrays revealed that EP-100 induced IL1α, IL33, CCL20, VEGF, and Low-density lipoprotein receptor (LDLR) secretion. Of these, we validated increasing IL33 levels following EP-100 treatment in vitro and in vivo; we determined the specific biological role of CD8+ T-cell activation with IL33 gene silencing using siRNA and Cas9-CRISPR approaches. In addition, we found that CD8+ T cells expressed very low level of LHRH-R and were not affected by EP-100. Taken together, EP-100 treatment had a substantial antitumor efficacy, particularly in combination with an anti-PD-L1 antibody. These results warrant further clinical development of this combination.
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Affiliation(s)
- Mark Seungwook Kim
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas.
| | - Shaolin Ma
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas.,Reproductive Medicine Research Center, the Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Anca Chelariu-Raicu
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas.,Department of Obstetrics and Gynecology, University of Hospital, LMU Munich, Germany
| | | | | | - Sanghoon Lee
- Department of System Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Robert L Coleman
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Anil K Sood
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas. .,Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas.,Center for RNA Interference and Non-Coding RNA, The University of Texas MD Anderson Cancer Center, Houston, Texas
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10
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Song J, Huang S, Ma P, Zhang B, Jia B, Zhang W. Improving NK1R-targeted gene delivery of stearyl-antimicrobial peptide CAMEL by conjugating it with substance P. Bioorg Med Chem Lett 2020; 30:127353. [PMID: 32631551 DOI: 10.1016/j.bmcl.2020.127353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 05/28/2020] [Accepted: 06/12/2020] [Indexed: 10/24/2022]
Abstract
Specificity is a crucial condition that hampers the application of non-viral vectors for cancer gene therapy. In a previous study, we developed an efficient gene vector, stearyl-CAMEL, using N-terminal stearylation of the antimicrobial peptide CAMEL. Substance P (SP), an 11-residue neuropeptide, rapidly enters cells after binding to the neurokinin-1 receptor (NK1R), which is expressed in many cancer cell lines. In this study, the NK1R-targeted gene vector stearyl-CMSP was constructed by conjugating SP to the C-terminus of stearyl-CAMEL. Our results indicated that stearyl-CMSP displayed significant transfection specificity for NK1R-expressing cells compared with that shown by stearyl-CAMEL. Accordingly, the stearyl-CMSP/p53 plasmid complexes had significantly higher antiproliferative activity against HEK293-NK1R cells than they did against HEK293 cells, while the stearyl-CAMEL/p53 plasmid complexes did not show this specificity in antiproliferative activity. Consequently, conjugation of the NK1R-targeted ligand SP is a simple and successful strategy to construct efficient cancer-targeted non-viral gene vectors.
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Affiliation(s)
- Jingjing Song
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Sujie Huang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Panpan Ma
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Bao Zhang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Bo Jia
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Wei Zhang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China.
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11
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Komarnicka UK, Kozieł S, Zabierowski P, Kruszyński R, Lesiów MK, Tisato F, Porchia M, Kyzioł A. Copper(I) complexes with phosphines P(p-OCH3-Ph)2CH2OH and P(p-OCH3-Ph)2CH2SarGly. Synthesis, multimodal DNA interactions, and prooxidative and in vitro antiproliferative activity. J Inorg Biochem 2020; 203:110926. [DOI: 10.1016/j.jinorgbio.2019.110926] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 11/11/2019] [Accepted: 11/12/2019] [Indexed: 12/21/2022]
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12
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Cao XW, Wang FJ, Liew OW, Lu YZ, Zhao J. Analysis of Triterpenoid Saponins Reveals Insights into Structural Features Associated with Potent Protein Drug Enhancement Effects. Mol Pharm 2020; 17:683-694. [PMID: 31913047 DOI: 10.1021/acs.molpharmaceut.9b01158] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Plant-based saponins are amphipathic glycosides composed of a hydrophobic aglycone backbone covalently bound to one or more hydrophilic sugar moieties. Recently, the endosomal escape activity of triterpenoid saponins has been investigated as a potentially powerful tool for improved cytosolic penetration of protein drugs internalized by endocytic uptake, thereby greatly enhancing their pharmacological effects. However, only a few saponins have been studied, and the paucity in understanding the structure-activity relationship of saponins imposes significant limitations on their applications. To address this knowledge gap, 12 triterpenoid saponins with diverse structural side chains were screened for their utility as endosomolytic agents. These compounds were used in combination with a toxin (MAP30-HBP) comprising a type I ribosome-inactivating protein fused to a cell-penetrating peptide. Suitability of saponins as endosomolytic agents was assessed on the basis of cytotoxicity, endosomal escape promotion, and synergistic effects on toxins. Five saponins showed strong endosomal escape activity, enhancing MAP30-HBP cytotoxicity by more than 106 to 109 folds. These saponins also enhanced the apoptotic effect of MAP30-HBP in a pH-dependent manner. Additionally, growth inhibition of MAP30-HBP-treated SMMC-7721 cells was greater than that of similarly treated HeLa cells, suggesting that saponin-mediated endosomolytic effect is likely to be cell-specific. Furthermore, the structural features and hydrophobicity of the sugar side chains were analyzed to draw correlations with endosomal escape activity and derive predictive rules, thus providing new insights into structure-activity relationships of saponins. This study revealed new saponins that can potentially be exploited as efficient cytosolic delivery reagents for improved therapeutic drug effects.
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Affiliation(s)
- Xue-Wei Cao
- Department of Applied Biology , East China University of Science and Technology , 130 Meilong Road , Shanghai 200237 , China
| | - Fu-Jun Wang
- New Drug R&D Center , Zhejiang Fonow Medicine Company, Ltd. , 209 West Hulian Road , Dongyang 322100 , Zhejiang , China.,Shanghai R&D Center for Standardization of Chinese Medicines , 1200 Cailun Road , Shanghai 201203 , China.,Institute of Chinese Materia , Shanghai University of Traditional Chinese Medicine , 1200 Cailun Road , Shanghai 201203 , China
| | - Oi-Wah Liew
- Cardiovascular Research Institute, Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, National University Health System , Centre for Translational Medicine , MD6#08-01, 14 Medical Drive , 117599 , Singapore
| | - Ye-Zhou Lu
- Department of Applied Biology , East China University of Science and Technology , 130 Meilong Road , Shanghai 200237 , China
| | - Jian Zhao
- Department of Applied Biology , East China University of Science and Technology , 130 Meilong Road , Shanghai 200237 , China.,State Key Laboratory of Bioreactor Engineering , East China University of Science and Technology , 130 Meilong Road , Shanghai 200237 , China
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13
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Sioud M, Pettersen S, Ailte I, Fløisand Y. Targeted Killing of Monocytes/Macrophages and Myeloid Leukemia Cells with Pro-Apoptotic Peptides. Cancers (Basel) 2019; 11:cancers11081088. [PMID: 31370273 PMCID: PMC6721331 DOI: 10.3390/cancers11081088] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 07/22/2019] [Accepted: 07/26/2019] [Indexed: 01/12/2023] Open
Abstract
Several cells of myeloid origin, such as monocytes and macrophages are involved in various human disorders, including cancer and inflammatory diseases. Hence, they represent attractive therapeutic targets. Here we developed three lytic hybrid peptides, by fusing a monocyte- and macrophage-binding peptide to pro-apoptotic peptides, and investigated their killing potency on blood monocytes, macrophages, and leukemia cells. We first showed that the targeting NW peptide is effective for depleting monocytes from whole peripheral blood mononuclear cells (PBMCs). Incubating the cells with biotin-conjugated NW peptide, and the subsequent capture on streptavidin-conjugated magnetic beads, depleted monocytes from the PBMCs. The NW peptide also depleted myeloid leukemia blasts from patient PBMCs. The treatment of the PBMCs with the lytic hybrid NW-KLA peptide killed monocytes, but not lymphocytes and primary mammary epithelial cells. Additionally, the fusion peptide exhibited a potent toxicity against macrophages and leukemia cells. The free lytic KLA peptide did not affect cells. Similarly, a second lytic hybrid peptide killed macrophages, leukemia cell lines, and blood leukemia blasts from patients with acute and chronic myeloid leukemia. The IC50 towards target cells were in the low macromolar range (4–12 µM). Overall, the data indicate that the NW peptide could be a potential drug delivery agent for monocytes, macrophages, and leukemia cells. Moreover, the engineered lytic hybrid peptides acting alone, or in combination with other therapeutic agents, might benefit many cancer patients and overcome drug resistance.
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Affiliation(s)
- Mouldy Sioud
- Department of Cancer Immunology, Institute for Cancer Research, Oslo University Hospital-Radiumhospitalet, Ullernchausseen 70, N0379 Oslo, Norway.
| | - Solveig Pettersen
- Department of Cancer Immunology, Institute for Cancer Research, Oslo University Hospital-Radiumhospitalet, Ullernchausseen 70, N0379 Oslo, Norway
| | - Ieva Ailte
- Department of Cancer Immunology, Institute for Cancer Research, Oslo University Hospital-Radiumhospitalet, Ullernchausseen 70, N0379 Oslo, Norway
| | - Yngvar Fløisand
- Department of Haematology, Oslo University Hospital-Rikshospitalet, Sognsvannvien 20, N0372 Oslo, Norway
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Phage Display Libraries: From Binders to Targeted Drug Delivery and Human Therapeutics. Mol Biotechnol 2019; 61:286-303. [DOI: 10.1007/s12033-019-00156-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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15
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Guha S, Ghimire J, Wu E, Wimley WC. Mechanistic Landscape of Membrane-Permeabilizing Peptides. Chem Rev 2019; 119:6040-6085. [PMID: 30624911 DOI: 10.1021/acs.chemrev.8b00520] [Citation(s) in RCA: 150] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Membrane permeabilizing peptides (MPPs) are as ubiquitous as the lipid bilayer membranes they act upon. Produced by all forms of life, most membrane permeabilizing peptides are used offensively or defensively against the membranes of other organisms. Just as nature has found many uses for them, translational scientists have worked for decades to design or optimize membrane permeabilizing peptides for applications in the laboratory and in the clinic ranging from antibacterial and antiviral therapy and prophylaxis to anticancer therapeutics and drug delivery. Here, we review the field of membrane permeabilizing peptides. We discuss the diversity of their sources and structures, the systems and methods used to measure their activities, and the behaviors that are observed. We discuss the fact that "mechanism" is not a discrete or a static entity for an MPP but rather the result of a heterogeneous and dynamic ensemble of structural states that vary in response to many different experimental conditions. This has led to an almost complete lack of discrete three-dimensional active structures among the thousands of known MPPs and a lack of useful or predictive sequence-structure-function relationship rules. Ultimately, we discuss how it may be more useful to think of membrane permeabilizing peptides mechanisms as broad regions of a mechanistic landscape rather than discrete molecular processes.
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Affiliation(s)
- Shantanu Guha
- Department of Biochemistry and Molecular Biology Tulane University School of Medicine , New Orleans , Louisiana 70112 , United States
| | - Jenisha Ghimire
- Department of Biochemistry and Molecular Biology Tulane University School of Medicine , New Orleans , Louisiana 70112 , United States
| | - Eric Wu
- 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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16
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Selective Cu(I) complex with phosphine-peptide (SarGly) conjugate contra breast cancer: Synthesis, spectroscopic characterization and insight into cytotoxic action. J Inorg Biochem 2018; 186:162-175. [PMID: 29945023 DOI: 10.1016/j.jinorgbio.2018.06.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 06/10/2018] [Accepted: 06/13/2018] [Indexed: 11/20/2022]
Abstract
The main disadvantage of conventional anticancer chemotherapy is the inability to deliver the correct amount of drug directly to cancer. Those molecular delivering systems are very important to destroy cancer cells selectively. Herein we report synthesis of phosphine-peptide conjugate (Ph2PCH2-Sar-Gly-OH, PSG) derived from SarGly (sarcosine-glycine), which can be easily exchanged to other peptide carriers, its oxide (OPh2PCH2-Sar-Gly-OH, OPSG) and the first copper(I) complex ([CuI(dmp)(P(Ph)2CH2-Sar-Gly-OH)], 1-PSG, where dmp stands for 2,9-dimethyl-1,10-phenanthroline). The compounds were characterized by elemental analysis, NMR (1D, 2D), UV-Vis spectroscopy and DFT (Density Functional Theory) methods. PSG and 1-PSG proved to be stable in biological medium in the presence of atmospheric oxygen for several days. The cytotoxicity of the compounds and cisplatin was tested against cancer cell lines: mouse colon carcinoma (CT26; 1-PSGIC50 = 3.12 ± 0.1), human lung adenocarcinoma (A549; 1-PSGIC50 = 2.01 ± 0.2) and human breast adenocarcinoma (MCF7; 1-PSGIC50 = 0.98 ± 0.2) as well as against primary line of human pulmonary fibroblasts (MRC-5; 1-PSGIC50 = 78.56 ± 1.1). Therapeutic index for 1-PSG (MCF7) equals 80. Intracellular accumulation of 1-PSG complex increased with time and was much higher (96%) inside MCF7 cancer cells than in normal MRC5 cells (20%). Attachment of SarGly to cytotoxic copper(I) complex via phosphine motif improved selectivity of copper(I) complex 1-PSG into the cancer cells. Precise mechanistic study revealed that the 1-PSG complex causes apoptotic cells MCF7 death with simultaneous decrease of mitochondrial membrane potential and increase of caspase-9 and -3 activities. Additionally, 1-PSG generated high level of reactive oxygen species that was the reason for oxidative damages to the sugar-phosphate backbone of plasmid DNA.
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17
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Hu C, Chen X, Huang Y, Chen Y. Co‐administration of kla‐TAT peptide and iRGD to enhance the permeability on A549 3D multiple sphere cells and accumulation on xenograft mice. Chem Biol Drug Des 2018; 92:1567-1575. [DOI: 10.1111/cbdd.13323] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Revised: 03/13/2018] [Accepted: 04/16/2018] [Indexed: 12/28/2022]
Affiliation(s)
- Cuihua Hu
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of EducationJilin University Changchun China
- College of Life SciencesJilin University Changchun China
| | - Xiaolong Chen
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of EducationJilin University Changchun China
- College of Life SciencesJilin University Changchun China
| | - Yibing Huang
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of EducationJilin University Changchun China
- College of Life SciencesJilin University Changchun China
| | - Yuxin Chen
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of EducationJilin University Changchun China
- College of Life SciencesJilin University Changchun China
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18
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Bouchet S, Tang R, Fava F, Legrand O, Bauvois B. The CNGRC-GG-D(KLAKLAK)2 peptide induces a caspase-independent, Ca2+-dependent death in human leukemic myeloid cells by targeting surface aminopeptidase N/CD13. Oncotarget 2017; 7:19445-67. [PMID: 26655501 PMCID: PMC4991394 DOI: 10.18632/oncotarget.6523] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Accepted: 11/16/2015] [Indexed: 02/06/2023] Open
Abstract
The CD13 antigen's binding site for the Asn-Gly-Arg (NGR) motif enables NGR-containing chemotherapeutic drugs to be delivered to CD13-positive tumours. Human CD13-positive acute myeloid leukemia (AML) cells proliferate abnormally and escape death. Here, we show that the CNGRC-GG-D(KLAKLAK)2 peptide induces death in AML cell lines (U937, THP-1, NB4, HL-60) and primary blood cells from AML patients. Cell death was characterized as a caspase-independent mechanism, without DNA fragmentation, but phosphatidylserine externalization and membrane disruption. Our results demonstrate in U937 cells that (i) the NGR-peptide triggers the loss of mitochondrial potential(ΔΨm) and generates superoxide anion (O2-), (ii) N-acetyl-L-cysteine (NAC) and extra/intracellular Ca2+ chelators (BAPTA) prevent both O2- production and cell death, (iii) the Ca2+-channel blocker nifedipine prevents cell death (indicating that Ca2+ influx is the initial death trigger), and (iv) BAPTA, but not NAC, prevents ΔΨm loss (suggesting O2- is a mitochondrial downstream effector). AML cell lines and primary blasts responding to the lethal action of NGR-peptide express promatrix metalloproteinase-12 (proMMP-12) and its substrate progranulin (an 88 kDa cell survival factor). A cell-free assay highlighted proMMP-12 activation by O2-. Accordingly, NGR-peptide's downregulation of 88 kDa progranulin protein was prevented by BAPTA and NAC. Conversely, AML blast resistance to NGR-peptide is associated with the expression of a distinct, 105 kDa progranulin isoform. These results indicate that CNGRC-GG-D(KLAKLAK)2 induces death in AML cells through the Ca2+-mitochondria-O2.-pathway, and support the link between proMMP-12 activation and progranulin cleavage during cell death. Our findings may have implications for the understanding of tumour biology and treatment.
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Affiliation(s)
- Sandrine Bouchet
- Centre de Recherche des Cordeliers, INSERM UMRS1138, Sorbonne Universités UPMC Paris 06, Université Paris Descartes Sorbonne Paris Cité, Paris, France.,Assistance Publique des Hôpitaux de Paris, Paris, France
| | - Ruoping Tang
- Centre de Recherche de Saint-Antoine, INSERM UMRS 938, Service d'Hématologie, Hôpital St Antoine, Paris, France.,Sorbonne Universités UPMC Paris 06, Paris, France
| | - Fanny Fava
- Centre de Recherche de Saint-Antoine, INSERM UMRS 938, Service d'Hématologie, Hôpital St Antoine, Paris, France.,Sorbonne Universités UPMC Paris 06, Paris, France
| | - Ollivier Legrand
- Centre de Recherche de Saint-Antoine, INSERM UMRS 938, Service d'Hématologie, Hôpital St Antoine, Paris, France.,Sorbonne Universités UPMC Paris 06, Paris, France
| | - Brigitte Bauvois
- Centre de Recherche des Cordeliers, INSERM UMRS1138, Sorbonne Universités UPMC Paris 06, Université Paris Descartes Sorbonne Paris Cité, Paris, France
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19
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Advances in structural design of lipid-based nanoparticle carriers for delivery of macromolecular drugs, phytochemicals and anti-tumor agents. Adv Colloid Interface Sci 2017; 249:331-345. [PMID: 28477868 DOI: 10.1016/j.cis.2017.04.006] [Citation(s) in RCA: 131] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 03/13/2017] [Accepted: 04/17/2017] [Indexed: 12/19/2022]
Abstract
The present work highlights recent achievements in development of nanostructured dispersions and biocolloids for drug delivery applications. We emphasize the key role of biological small-angle X-ray scattering (BioSAXS) investigations for the nanomedicine design. A focus is given on controlled encapsulation of small molecular weight phytochemical drugs in lipid-based nanocarriers as well as on encapsulation of macromolecular siRNA, plasmid DNA, peptide and protein pharmaceuticals in nanostructured nanoparticles that may provide efficient intracellular delivery and triggered drug release. Selected examples of utilisation of the BioSAXS method for characterization of various types of liquid crystalline nanoorganizations (liposome, spongosome, cubosome, hexosome, and nanostructured lipid carriers) are discussed in view of the successful encapsulation and protection of phytochemicals and therapeutic biomolecules in the hydrophobic or the hydrophilic compartments of the nanocarriers. We conclude that the structural design of the nanoparticulate carriers is of crucial importance for the therapeutic outcome and the triggered drug release from biocolloids.
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20
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Dai Y, Cai X, Shi W, Bi X, Su X, Pan M, Li H, Lin H, Huang W, Qian H. Pro-apoptotic cationic host defense peptides rich in lysine or arginine to reverse drug resistance by disrupting tumor cell membrane. Amino Acids 2017; 49:1601-1610. [PMID: 28664269 DOI: 10.1007/s00726-017-2453-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 06/13/2017] [Indexed: 12/13/2022]
Abstract
Host defense peptides have been demonstrated to exhibit prominent advantages in cancer therapy with selective binding ability toward tumor cells via electrostatic attractions, which can overcome the limitations of traditional chemotherapy drugs, such as toxicity on non-malignant cells and the emergence of drug resistance. In this work, we redesigned and constructed a series of cationic peptides by inserting hydrophobic residues into hydrophilic surface or replacing lysine (K) with arginine (R), based on the experience from the preliminary work of host defense peptide B1. In-depth studies demonstrated that the engineered peptides exhibited more potent anti-cancer activity against various cancer cell lines and much lower toxicity to normal cells compared with B1. Further investigation revealed that compounds I-3 and I-7 could act on cancer cell membranes and subsequently alter the permeability, which facilitated obvious pro-apoptotic activity in paclitaxel-resistant cell line (MCF-7/Taxol). The result of mitochondrial membrane potential assay (ΔΨm) demonstrated that the peptides induced ΔΨm dissipation and mitochondrial depolarization. The caspase-3 cellular activity assay showed that the anti-cancer activity of peptides functioned via caspase-3-dependent apoptosis. The study yielded compound I-7 with superior properties for antineoplastic activity in comparison to B1, which makes it a promising potential candidate for cancer therapy.
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Affiliation(s)
- Yuxuan Dai
- Center of Drug Discovery, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210009, People's Republic of China
| | - Xingguang Cai
- Center of Drug Discovery, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210009, People's Republic of China
| | - Wei Shi
- Center of Drug Discovery, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210009, People's Republic of China
| | - Xinzhou Bi
- Center of Drug Discovery, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210009, People's Republic of China
| | - Xin Su
- Center of Drug Discovery, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210009, People's Republic of China
| | - Miaobo Pan
- Center of Drug Discovery, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210009, People's Republic of China
| | - Huilan Li
- Center of Drug Discovery, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210009, People's Republic of China
| | - Haiyan Lin
- Department of Biochemistry and Molecular Biology, Nanjing Medical University, 140 Hanzhong Road, Nanjing, 210029, People's Republic of China.
| | - Wenlong Huang
- Center of Drug Discovery, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210009, People's Republic of China.
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Disease, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210009, People's Republic of China.
| | - Hai Qian
- Center of Drug Discovery, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210009, People's Republic of China.
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Disease, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210009, People's Republic of China.
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21
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Jin Y, Zhang N, Li C, Pu K, Ding C, Zhu Y. Nanosystem composed with MSNs, gadolinium, liposome and cytotoxic peptides for tumor theranostics. Colloids Surf B Biointerfaces 2016; 151:240-248. [PMID: 28024200 DOI: 10.1016/j.colsurfb.2016.12.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 11/20/2016] [Accepted: 12/18/2016] [Indexed: 01/24/2023]
Abstract
A dual-functional delivery system, based on mesoporous silica nanoparticles (MSNs) with the integration of Magnetic Resonance (MR) imaging and therapeutic peptide delivery, is reported in this paper. A lipid bilayer is attached onto the surface of the nanoparticles, following the doping of Gadolinium (Gd), a paramagnetic lanthanide ion. The liposome-coated GdMSNs exhibit improved colloidal stability, better biocompatibility and more efficient cellular uptake. The Gd renders the nano carrier a potential T1 contrast agent, confirmed by the MR imaging. A pro-apoptotic peptide, KLA (HGGKLAKLAKKLAKLAK), is encapsulated into the GdMSNs-LP and enters into the cells successfully to induce mitochondrial swelling and apoptosis, while it is nontoxic outside the cells. The synthesis procedure is convenient and free of toxic organic reagents. The nanosystem we construct may contribute to a promising theranostic platform for therapeutic peptide delivery in cancer treatment.
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Affiliation(s)
- Yaqing Jin
- Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Dushu Lake Higher Education Town, Suzhou Industrial Park, Suzhou, 215125, China; University of Chinese Academy of Sciences, 19(A) Yuquan Road, Beijing, 100039, China
| | - Nengpan Zhang
- Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Dushu Lake Higher Education Town, Suzhou Industrial Park, Suzhou, 215125, China; University of Chinese Academy of Sciences, 19(A) Yuquan Road, Beijing, 100039, China
| | - Chunlin Li
- Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Dushu Lake Higher Education Town, Suzhou Industrial Park, Suzhou, 215125, China; University of Chinese Academy of Sciences, 19(A) Yuquan Road, Beijing, 100039, China
| | - Kefeng Pu
- Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Dushu Lake Higher Education Town, Suzhou Industrial Park, Suzhou, 215125, China
| | - Chen Ding
- Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Dushu Lake Higher Education Town, Suzhou Industrial Park, Suzhou, 215125, China; China Pharmaceutical University, 639 Longmian Avenue, Jiangning District, Nanjing, 211198, China
| | - Yimin Zhu
- Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Dushu Lake Higher Education Town, Suzhou Industrial Park, Suzhou, 215125, China.
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Galbiati E, Gambini L, Civitarese V, Bellini M, Ambrosini D, Allevi R, Avvakumova S, Romeo S, Prosperi D. Blind targeting in action: From phage display to breast cancer cell targeting with peptide-gold nanoconjugates. Pharmacol Res 2016; 111:155-162. [DOI: 10.1016/j.phrs.2016.06.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Revised: 05/30/2016] [Accepted: 06/08/2016] [Indexed: 12/12/2022]
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23
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pH-Selective Cytotoxicity of pHLIP-Antimicrobial Peptide Conjugates. Sci Rep 2016; 6:28465. [PMID: 27334357 PMCID: PMC4917822 DOI: 10.1038/srep28465] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Accepted: 06/02/2016] [Indexed: 01/10/2023] Open
Abstract
Positively charged antimicrobial peptides have become promising agents for the treatment of cancer by inducing apoptosis though their preferential binding and disruption of negatively charged membranes, such as the mitochondrial membrane. (KLAKLAK)2 is such a peptide but due to its polarity, it cannot cross the cellular membrane and therefore relies on the use of a delivery agent. For targeted delivery, previous studies have relied on cell penetrating peptides, nanoparticles or specific biomarkers. Herein, we investigated the first use of pHLIP to selectively target and directly translocate (KLAKLAK)2 into the cytoplasm of breast cancer cells, based on the acidic tumor micro-environment. With the goal of identifying a lead conjugate with optimized selective cytotoxicity towards cancer cells, we analyzed a family of (KLAKLAK)2 analogs with varying size, polarity and charge. We present a highly efficacious pHLIP conjugate that selectively induces concentration- and pH-dependent toxicity in breast cancer cells.
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24
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Moreno P, Ramos-Álvarez I, Moody TW, Jensen RT. Bombesin related peptides/receptors and their promising therapeutic roles in cancer imaging, targeting and treatment. Expert Opin Ther Targets 2016; 20:1055-73. [PMID: 26981612 DOI: 10.1517/14728222.2016.1164694] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
INTRODUCTION Despite remarkable advances in tumor treatment, many patients still die from common tumors (breast, prostate, lung, CNS, colon, and pancreas), and thus, new approaches are needed. Many of these tumors synthesize bombesin (Bn)-related peptides and over-express their receptors (BnRs), hence functioning as autocrine-growth-factors. Recent studies support the conclusion that Bn-peptides/BnRs are well-positioned for numerous novel antitumor treatments, including interrupting autocrine-growth and the use of over-expressed receptors for imaging and targeting cytotoxic-compounds, either by direct-coupling or combined with nanoparticle-technology. AREAS COVERED The unique ability of common neoplasms to synthesize, secrete, and show a growth/proliferative/differentiating response due to BnR over-expression, is reviewed, both in general and with regard to the most frequently investigated neoplasms (breast, prostate, lung, and CNS). Particular attention is paid to advances in the recent years. Also considered are the possible therapeutic approaches to the growth/differentiation effect of Bn-peptides, as well as the therapeutic implication of the frequent BnR over-expression for tumor-imaging and/or targeted-delivery. EXPERT OPINION Given that Bn-related-peptides/BnRs are so frequently ectopically-expressed by common tumors, which are often malignant and become refractory to conventional treatments, therapeutic interventions using novel approaches to Bn-peptides and receptors are being explored. Of particular interest is the potential of reproducing with BnRs in common tumors the recent success of utilizing overexpression of somatostatin-receptors by neuroendocrine-tumors to provide the most sensitive imaging methods and targeted delivery of cytotoxic-compounds.
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Affiliation(s)
- Paola Moreno
- a Digestive Diseases Branch, Cell Biology Section, NIDDK , National Institutes of Health , Bethesda , MD , USA
| | - Irene Ramos-Álvarez
- a Digestive Diseases Branch, Cell Biology Section, NIDDK , National Institutes of Health , Bethesda , MD , USA
| | - Terry W Moody
- b Center for Cancer Research, Office of the Director , NCI, National Institutes of Health , Bethesda , MD , USA
| | - Robert T Jensen
- a Digestive Diseases Branch, Cell Biology Section, NIDDK , National Institutes of Health , Bethesda , MD , USA
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25
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Neo SH, Lew QJ, Koh SM, Zheng L, Bi X, Chao SH. Use of a novel cytotoxic HEXIM1 peptide in the directed breast cancer therapy. Oncotarget 2016; 7:5483-94. [PMID: 26734838 PMCID: PMC4868700 DOI: 10.18632/oncotarget.6794] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Accepted: 12/08/2015] [Indexed: 11/25/2022] Open
Abstract
Hexamethylene bisacetamide-inducible protein 1 (HEXIM1) is best known as the inhibitor of positive transcription elongation factor b (P-TEFb) and is recently identified as a novel positive regulator of p53. We previously showed the basic region (BR) of HEXIM1 mediates the binding of HEXIM1 to a nucleolar protein, nucleophosmin (NPM), and can be ubiquitinated by human double minute 2 protein. Here we identify a cytotoxic peptide derived from the BR of HEXIM1. When fused with a cell-penetrating peptide, the HEXIM1 BR peptide triggers rapid cytotoxic effect independent of p53. Similarly, when the BR peptide is linked with a breast cancer cell targeting peptide, LTV, the LTV-BR fusion peptide exhibits specific killing of breast cancer cells, which is not observed with the commonly used cytotoxic peptide, KLA. Importantly, the BR peptide fails to enter cells by itself and does not induce any cytotoxic effects when it is not guided by any cell-penetrating or cancer targeting peptides. We showed that HEXIM1 BR peptide depolarizes mitochondrial membrane potential in a p53-dependent manner and its cell-killing activity is not suppressed by caspase inhibition. Furthermore, we observed an accumulation of the internalized BR peptide in the nucleoli of treated cells and an altered localization of NPM. These results illustrate a novel mechanism which the BR peptide induces cell death and can potentially be used as a novel therapeutic strategy against breast cancer.
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Affiliation(s)
- Shu Hui Neo
- Expression Engineering and Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Singapore 138668
| | - Qiao Jing Lew
- Expression Engineering and Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Singapore 138668
| | | | - Lu Zheng
- Proteomics Groups, Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Singapore 138668
| | - Xuezhi Bi
- Proteomics Groups, Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Singapore 138668
| | - Sheng-Hao Chao
- Expression Engineering and Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Singapore 138668
- Department of Microbiology, National University of Singapore, Singapore 117597
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26
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Leveraging growth factor induced macropinocytosis for targeted treatment of lung cancer. Med Oncol 2015; 32:259. [DOI: 10.1007/s12032-015-0708-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Accepted: 10/24/2015] [Indexed: 12/16/2022]
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27
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Ma Y, Zhao S, Shen S, Fang S, Ye Z, Shi Z, Hong A. A novel recombinant slow-release TNF α-derived peptide effectively inhibits tumor growth and angiogensis. Sci Rep 2015; 5:13595. [PMID: 26337231 PMCID: PMC4559766 DOI: 10.1038/srep13595] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Accepted: 07/31/2015] [Indexed: 01/02/2023] Open
Abstract
RMP16, a recombinant TNF α-derived polypeptide comprising a specific human serum albumin (HSA)-binding 7-mer peptide identified by phage display screening (WQRPSSW), a cleavage peptide for Factor Xa (IEGR), and a 20-amino acid bioactive peptide P16 (TNF α segment including amino acid residues 75–94), was prepared by gene-engineering technology. RMP16 showed prolonged half-life, 13.11 hours in mice (half-lives of P16 and TNF α are 5.77 and 29.0 minutes, respectively), and obviously higher receptor selectivity for TNFRI than TNF α. RMP16 had significant inhibition effects for multiple tumor cells, especially prostate cancer Du145 cells, and human vascular endothelial cells but not for human mammary non-tumorigenic epithelial cells. RMP16 can more effectively induce apoptosis and inhibit proliferation for DU145 cells than P16 and TNF α via the caspase-dependent apoptosis pathway and G0/G1 cell cycle arrest. In nude mice with transplanted tumor of DU145 cells, RMP16 significantly induced apoptosis and necrosis of tumor tissues but causing less side effects, and tumor inhibitory rate reached nearly 80%, furthermore, RMP16 can potently inhibit tumor angiogenesis and neovascularization. These findings suggest that RMP16 may represent a promising long-lasting antitumor therapeutic peptide with less TNF α-induced toxicity.
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Affiliation(s)
- Yi Ma
- Institute of Biomedicine &Dept. Cellular Biology, Jinan University.,National Engineering Research Center of Genetic Medicine, Jinan University, 601 Huangpu Ave. West, Guangzhou 510632, Guangdong Province, China
| | - Shaojun Zhao
- Institute of Biomedicine &Dept. Cellular Biology, Jinan University.,National Engineering Research Center of Genetic Medicine, Jinan University, 601 Huangpu Ave. West, Guangzhou 510632, Guangdong Province, China
| | - Shutao Shen
- Institute of Biomedicine &Dept. Cellular Biology, Jinan University.,National Engineering Research Center of Genetic Medicine, Jinan University, 601 Huangpu Ave. West, Guangzhou 510632, Guangdong Province, China
| | - Shixiong Fang
- Institute of Biomedicine &Dept. Cellular Biology, Jinan University.,National Engineering Research Center of Genetic Medicine, Jinan University, 601 Huangpu Ave. West, Guangzhou 510632, Guangdong Province, China
| | - Zulu Ye
- Institute of Biomedicine &Dept. Cellular Biology, Jinan University
| | - Zhi Shi
- Institute of Biomedicine &Dept. Cellular Biology, Jinan University.,National Engineering Research Center of Genetic Medicine, Jinan University, 601 Huangpu Ave. West, Guangzhou 510632, Guangdong Province, China
| | - An Hong
- Institute of Biomedicine &Dept. Cellular Biology, Jinan University.,National Engineering Research Center of Genetic Medicine, Jinan University, 601 Huangpu Ave. West, Guangzhou 510632, Guangdong Province, China
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Lin YC, Lim YF, Russo E, Schneider P, Bolliger L, Edenharter A, Altmann KH, Halin C, Hiss JA, Schneider G. Multidimensional Design of Anticancer Peptides. Angew Chem Int Ed Engl 2015; 54:10370-4. [PMID: 26119906 DOI: 10.1002/anie.201504018] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Indexed: 11/10/2022]
Abstract
The computer-assisted design and optimization of peptides with selective cancer cell killing activity was achieved through merging the features of anticancer peptides, cell-penetrating peptides, and tumor-homing peptides. Machine-learning classifiers identified candidate peptides that possess the predicted properties. Starting from a template amino acid sequence, peptide cytotoxicity against a range of cancer cell lines was systematically optimized while minimizing the effects on primary human endothelial cells. The computer-generated sequences featured improved cancer-cell penetration, induced cancer-cell apoptosis, and were enabled a decrease in the cytotoxic concentration of co-administered chemotherapeutic agents in vitro. This study demonstrates the potential of multidimensional machine-learning methods for rapidly obtaining peptides with the desired cellular activities.
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Affiliation(s)
- Yen-Chu Lin
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH), Vladimir-Prelog-Weg 4, 8093 Zurich (Switzerland)
| | - Yi Fan Lim
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH), Vladimir-Prelog-Weg 4, 8093 Zurich (Switzerland)
| | - Erica Russo
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH), Vladimir-Prelog-Weg 4, 8093 Zurich (Switzerland)
| | - Petra Schneider
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH), Vladimir-Prelog-Weg 4, 8093 Zurich (Switzerland)
| | - Lea Bolliger
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH), Vladimir-Prelog-Weg 4, 8093 Zurich (Switzerland)
| | - Adriana Edenharter
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH), Vladimir-Prelog-Weg 4, 8093 Zurich (Switzerland)
| | - Karl-Heinz Altmann
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH), Vladimir-Prelog-Weg 4, 8093 Zurich (Switzerland)
| | - Cornelia Halin
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH), Vladimir-Prelog-Weg 4, 8093 Zurich (Switzerland)
| | - Jan A Hiss
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH), Vladimir-Prelog-Weg 4, 8093 Zurich (Switzerland)
| | - Gisbert Schneider
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH), Vladimir-Prelog-Weg 4, 8093 Zurich (Switzerland).
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29
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Lin YC, Lim YF, Russo E, Schneider P, Bolliger L, Edenharter A, Altmann KH, Halin C, Hiss JA, Schneider G. Mehrdimensionaler Entwurf von Antikrebspeptiden. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201504018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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30
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Adrover M, Sanchis P, Vilanova B, Pauwels K, Martorell G, Pérez JJ. Conformational ensembles of neuromedin C reveal a progressive coil-helix transition within a binding-induced folding mechanism. RSC Adv 2015. [DOI: 10.1039/c5ra12753j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
NMR has been used to elucidate the folding pathway of neuromedin C and to characterize the architecture of the NMC–SDS micelle complex. Its C-terminal region is more prone to acquire an α-helical fold than the N-terminus, and it also binds to micelles.
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Affiliation(s)
- Miquel Adrover
- Institut Universitari d'Investigació en Ciències de la Salut (IUNICS)
- Departament de Química
- Universitat de les Illes Balears (UIB)
- Palma de Mallorca
- Spain
| | - Pilar Sanchis
- Institut Universitari d'Investigació en Ciències de la Salut (IUNICS)
- Departament de Química
- Universitat de les Illes Balears (UIB)
- Palma de Mallorca
- Spain
| | - Bartolomé Vilanova
- Institut Universitari d'Investigació en Ciències de la Salut (IUNICS)
- Departament de Química
- Universitat de les Illes Balears (UIB)
- Palma de Mallorca
- Spain
| | - Kris Pauwels
- Structural Biology Brussels
- Vrije Universiteit Brussels (VUB)
- 1050 Brussels
- Belgium
- Structural Biology Research Centre
| | - Gabriel Martorell
- Serveis Científico-Tècnics
- Universitat de les Illes Balears (UIB)
- Palma de Mallorca
- Spain
| | - Juan Jesús Pérez
- Departament d'Enginyeria Química
- Universitat Politecnica de Catalunya (UPC)
- ETSEIB
- Barcelona
- Spain
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31
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A proapoptotic peptide conjugated to penetratin selectively inhibits tumor cell growth. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2014; 1838:2087-98. [DOI: 10.1016/j.bbamem.2014.04.025] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Revised: 04/18/2014] [Accepted: 04/24/2014] [Indexed: 02/04/2023]
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32
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Biodegradable and multifunctional polymer micro-tubes for targeting photothermal therapy. Int J Mol Sci 2014; 15:11730-41. [PMID: 24992593 PMCID: PMC4139810 DOI: 10.3390/ijms150711730] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Revised: 05/30/2014] [Accepted: 06/24/2014] [Indexed: 01/31/2023] Open
Abstract
We describe an innovative form of polymer micro-tubes with diverse functions including biodegradation, magnetic manipulation, and photothermal effect that employs and activates photothermal therapy to target cancer cells. The micro-tube comprised soybean protein isolate, poly-l-glutamic acid, magnetite nanoparticles, plus gold nanoparticles. Through electrostatic force, these components, with opposite charges, formed pairs of layers in the pores of the template, various bilayers of soybean protein isolate and poly-l-glutamic acid served as the biodegradable building wall to each micro-tube. The layers of magnetite nanoparticle functionalized micro-tubes enabled the micro-tube manipulate to target the cancer cells by using an external magnetic field. The photo-thermal effect of the layer of gold nanoparticles on the outer surface of the micro-tubes, when under irradiation and when brought about by the near infrared radiation, elevated each sample’s temperature. In addition, and when under the exposure of the near infrared radiation, the elevated temperature of the suspension of the micro-tubes, likewise with a concentration of 0.2 mg/mL, and similarly with a power of 2 W and as well maintained for 10 min, elevated the temperature of the suspension beyond 42 °C. Such temperatures induced apoptosis of target cancer cells through the effect of photothermal therapy. The findings assert that structured micro-tubes have a promising application as a photothermal agent. From this assertion, the implications are that this multifunctional agent will significantly improve the methodology for cancer diagnosis and therapy.
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Preclinical studies of targeted therapies for CD20-positive B lymphoid malignancies by Ofatumumab conjugated with auristatin. Invest New Drugs 2013; 32:75-86. [PMID: 23903896 DOI: 10.1007/s10637-013-9995-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Accepted: 06/23/2013] [Indexed: 02/04/2023]
Abstract
Utilization of antibodies to deliver highly potent cytotoxic agents to corresponding antigen-overexpressed tumor cells is a clinically validated therapeutic strategy. Ofatumumab (OFA, trade name Arzerra) is a fully human CD20-specific antibody that is active against CD20-positive B-cell lymphoma/chronic lymphocytic leukemia cells. In order to further enhance the anticancer effect of OFA, anti-CD20 OFA has been conjugated with highly cytotoxic monomethyl auristatin E (MMAE) through a cathepsin-B-cleavable valine-citrulline (vc) dipeptide linkage to form OFA-vcMMAE and the anti-tumor activity of OFA-vcMMAE against CD20-positive B lymphoma cells are then evaluated in vitro and in vivo. As a result, conjugation of OFA with MMAE has kept the initial effector functional activities of OFA such as binding affinity, complement-dependent cytotoxicity (CDC) as well as antibody-dependent cell-mediated cytotoxicity (ADCC). In addition, the conjugation of MMAE significantly improved the cytotoxic activity of OFA against CD20-positive cells (i.e., Raji, Daudi and WIL2-S cells) but not against CD20-negative K562 cells. On the other hand, OFA-vcMMAE was modulated from the CD20-positive cell surface and then entered the lysosomes by receptor-mediated endocytosis, underwent proteolytic degradation and released active drug MMAE to induce apoptotic cell death through a caspase-3-like protease-dependent pathway. Surprisingly, OFA-vcMMAE completely inhibited the growth of CD20-positive Daudi and Ramos lymphoma xenografts in vivo, and exhibited greater anti-tumor activity than unconjugated OFA, suggesting that the anti-tumor activity of anti-CD20 antibody can be enhanced by conjugation with MMAE. In the near future, this new approach might be used as a clinical treatment of CD20-positive B lymphoid malignancies.
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34
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Lemeshko VV. Electrical potentiation of the membrane permeabilization by new peptides with anticancer properties. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2012; 1828:1047-56. [PMID: 23262194 DOI: 10.1016/j.bbamem.2012.12.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2012] [Revised: 12/10/2012] [Accepted: 12/12/2012] [Indexed: 12/15/2022]
Abstract
New polycationic peptides were designed on the basis of 16-mer and 14-mer fragments of the peptide BTM-P1, derived from the Cry11Bb protoxin. The peptides caused mitochondrial, but not red blood cell membrane permeabilization. Conjugation of the cell penetrating hepta-arginine vector to their N- or C-termini through two glycine residues resulted in more active peptides, which also permeabilized the red blood cells with a relatively high plasma membrane potential generated in the presence of valinomycin. The efficiency of the peptides was remarkably higher in the lower ionic strength media. The capability of the plasma membrane permeabilization of the normal red blood cells by the designed conjugated peptides and by known anticancer peptide R7-KLA was also strongly potentiated by the external electrical pulses applied to the cell suspension. These results open the new avenues of the local destruction of solid tumors using the combined "peptide--electrical pulses" synergistic treatment. The designed peptides were active against the human leukemia Jurkat cells but not against the normal wild type CHO cells.
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Affiliation(s)
- Victor V Lemeshko
- Universidad Nacional de Colombia, Sede Medellín, Medellín, Colombia.
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