1
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Batistatou N, Kritzer JA. Comparing Cell Penetration of Biotherapeutics across Human Cell Lines. ACS Chem Biol 2024; 19:1351-1365. [PMID: 38836425 DOI: 10.1021/acschembio.4c00211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2024]
Abstract
A major obstacle in biotherapeutics development is maximizing cell penetration. Ideally, assays would allow for optimization of cell penetration in the cell type of interest early in the drug development process. However, few assays exist to compare cell penetration across different cell types independent of drug function. In this work, we applied the chloroalkane penetration assay (CAPA) in seven mammalian cell lines as well as primary cells. Careful controls were used to ensure that data could be compared across cell lines. We compared the nuclear penetration of several peptides and drug-like oligonucleotides and saw significant differences among the cell lines. To help explain these differences, we quantified the relative activities of endocytosis pathways in these cell lines and correlated them with the penetration data. Based on these results, we knocked down clathrin in a cell line with an efficient permeability profile and observed reduced penetration of peptides but not oligonucleotides. Finally, we used small-molecule endosomal escape enhancers and observed enhancement of cell penetration of some oligonucleotides, but only in some of the cell lines tested. CAPA data provide valuable points of comparison among different cell lines, including primary cells, for evaluating the cell penetration of various classes of peptides and oligonucleotides.
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Affiliation(s)
- Nefeli Batistatou
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
| | - Joshua A Kritzer
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
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2
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Klußmann M, Stillger K, Ruppel M, Sticker CL, Neundorf I. Investigating the impact of thiol reactivity and disulfide formation on cellular uptake of cell-permeable peptides. J Pept Sci 2024:e3604. [PMID: 38651525 DOI: 10.1002/psc.3604] [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: 01/29/2024] [Revised: 03/20/2024] [Accepted: 03/24/2024] [Indexed: 04/25/2024]
Abstract
Cell-penetrating peptides (CPPs) have been explored as versatile tools to transport various molecules into cells. The uptake mechanism of CPPs is still not clearly understood and most probably depends on several factors like the nature of the CPP itself, the attached cargo, the investigated cell system, and other experimental conditions, such as temperature and concentration. One of the first steps of internalization involves the interaction of CPPs with negatively charged molecules present at the outer layer of the cell membrane. Recently, thiol-mediated uptake has been found to support the effective translocation of sulfhydryl-bearing substances that would actually not be cell-permeable. Within this work, we aimed to understand the relevance of thiol reactivity for the uptake mechanism of cysteine-containing CPPs that we have developed previously in our group. Therefore, we compared the two peptides, sC18-Cys and CaaX-1, in their single reduced and dimeric disulfide versions. Cytotoxicity, intracellular accumulation, and impact on the internalization process of the disulfides were investigated in HeLa cells. Both disulfide CPPs demonstrated significantly stronger cytotoxic effects and membrane activity compared with their reduced counterparts. Notably, thiol-mediated uptake could be excluded as a main driver for translocation, showing that peptides like CaaX-1 are most likely taken up by other mechanisms.
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Affiliation(s)
- Merlin Klußmann
- Institute for Biochemistry, University of Cologne, Cologne, Germany
| | | | - Melina Ruppel
- Institute for Biochemistry, University of Cologne, Cologne, Germany
| | | | - Ines Neundorf
- Institute for Biochemistry, University of Cologne, Cologne, Germany
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3
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Asrorov AM, Wang H, Zhang M, Wang Y, He Y, Sharipov M, Yili A, Huang Y. Cell penetrating peptides: Highlighting points in cancer therapy. Drug Dev Res 2023; 84:1037-1071. [PMID: 37195405 DOI: 10.1002/ddr.22076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 04/29/2023] [Indexed: 05/18/2023]
Abstract
Cell-penetrating peptides (CPPs), first identified in HIV a few decades ago, deserved great attention in the last two decades; especially to support the penetration of anticancer drug means. In the drug delivery discipline, they have been involved in various approaches from mixing with hydrophobic drugs to the use of genetically conjugated proteins. The early classification as cationic and amphipathic CPPs has been extended to a few more classes such as hydrophobic and cyclic CPPs so far. Developing potential sequences utilized almost all methods of modern science: choosing high-efficiency peptides from natural protein sequences, sequence-based comparison, amino acid substitution, obtaining chemical and/or genetic conjugations, in silico approaches, in vitro analysis, animal experiments, etc. The bottleneck effect in this discipline reveals the complications that modern science faces in drug delivery research. Most CPP-based drug delivery systems (DDSs) efficiently inhibited tumor volume and weight in mice, but only in rare cases reduced their levels and continued further processes. The integration of chemical synthesis into the development of CPPs made a significant contribution and even reached the clinical stage as a diagnostic tool. But constrained efforts still face serious problems in overcoming biobarriers to reach further achievements. In this work, we reviewed the roles of CPPs in anticancer drug delivery, focusing on their amino acid composition and sequences. As the most suitable point, we relied on significant changes in tumor volume in mice resulting from CPPs. We provide a review of individual CPPs and/or their derivatives in a separate subsection.
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Affiliation(s)
- Akmal M Asrorov
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
- Institute of Bioorganic Chemistry, AS of Uzbekistan, Tashkent, Uzbekistan
- Department of Natural Substances Chemistry, National University of Uzbekistan, Tashkent, Uzbekistan
| | - Huiyuan Wang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Meng Zhang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Yonghui Wang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Yang He
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Mirkomil Sharipov
- Institute of Bioorganic Chemistry, AS of Uzbekistan, Tashkent, Uzbekistan
| | - Abulimiti Yili
- The Key Laboratory of Plant Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, Xinjiang, China
| | - Yongzhuo Huang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
- Zhongshan Institute for Drug Discovery, Institutes of Drug Discovery and Development, Chinese Academy of Sciences, Zhongshan, China
- NMPA Key Laboratory for Quality Research and Evaluation of Pharmaceutical Excipients, Shanghai, China
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4
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Lobo CL, Shetty A, M M, Dubey A, El-Zahaby SA. Non-systemic Approaches for Ductal Carcinoma In Situ: Exploring the Potential of Ultra-flexible Combisomes as a Novel Drug Delivery Strategy-a Review. AAPS PharmSciTech 2023; 24:119. [PMID: 37173545 DOI: 10.1208/s12249-023-02574-z] [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: 02/16/2023] [Accepted: 04/25/2023] [Indexed: 05/15/2023] Open
Abstract
Ductal carcinoma in situ (DCIS) is currently treated through breast-conserving surgery (lumpectomy), radiation therapy, breast-removing surgery (mastectomy), and hormone therapy to prevent further progression into invasive breast cancer and recurrence. Discrepancies concerning the prognosis of DCIS have sparked controversy about adequate treatment. Considering the severe medical and psychological consequences of mastectomy, developing a treatment approach that arrests the progression of DCIS to the invasive stage without affecting the non-cancerous cells is of utmost importance. In the current review, the problems associated with the diagnosis and management of DCIS have been thoroughly discussed. A summary of the route of administration and drug delivery systems to manage DCIS was also provoked. Innovative ultra-flexible combisomes were also proposed for the effective management of DCIS. Prevention is essential in managing the risk of DCIS and reducing the risk of progression to invasive breast cancer. While prevention is vital, it is not always possible to prevent DCIS, and in some cases, treatment may be necessary. Hence, this review recommends that ultra-flexible combisomes administered as a topical gel provide a non-systemic approach for managing DCIS and thus significantly minimize the side effects and costs associated with existing therapies.
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Affiliation(s)
- Cynthia Lizzie Lobo
- Nitte (Deemed to be University), NGSM Institute of Pharmaceutical Sciences, Department of Pharmaceutics, Deralakatte, Mangalore, 575018, India
| | - Amitha Shetty
- Nitte (Deemed to be University), NGSM Institute of Pharmaceutical Sciences, Department of Pharmaceutics, Deralakatte, Mangalore, 575018, India
| | - Manohar M
- Nitte (Deemed to be University), NGSM Institute of Pharmaceutical Sciences, Department of Pharmaceutics, Deralakatte, Mangalore, 575018, India
| | - Akhilesh Dubey
- Nitte (Deemed to be University), NGSM Institute of Pharmaceutical Sciences, Department of Pharmaceutics, Deralakatte, Mangalore, 575018, India.
| | - Sally A El-Zahaby
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, King Salman International University, South Sinai, Egypt
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Hadjicharalambous A, Bournakas N, Newman H, Skynner MJ, Beswick P. Antimicrobial and Cell-Penetrating Peptides: Understanding Penetration for the Design of Novel Conjugate Antibiotics. Antibiotics (Basel) 2022; 11:1636. [PMID: 36421280 PMCID: PMC9686638 DOI: 10.3390/antibiotics11111636] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 11/11/2022] [Accepted: 11/15/2022] [Indexed: 08/27/2023] Open
Abstract
Antimicrobial peptides (AMPs) are short oligopeptides that can penetrate the bacterial inner and outer membranes. Together with cell-penetrating peptides (CPPs), they are called membrane active peptides; peptides which can translocate across biological membranes. Over the last fifty years, attempts have been made to understand the molecular features that drive the interactions of membranes with membrane active peptides. This review examines the features of a membrane these peptides exploit for translocation, as well as the physicochemical characteristics of membrane active peptides which are important for translocation. Moreover, it presents examples of how these features have been used in recent years to create conjugates consisting of a membrane active peptide, called a "vector", attached to either a current or novel antibiotic, called a "cargo" or "payload". In addition, the review discusses what properties may contribute to an ideal peptide vector able to deliver cargoes across the bacterial outer membrane as the rising issue of antimicrobial resistance demands new strategies to be employed to combat this global public health threat.
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Affiliation(s)
- Andreas Hadjicharalambous
- Department of Biochemistry, University of Cambridge, Cambridge CB2 1QN, UK
- BicycleTx Limited, Portway Building, Granta Park, Cambridge CB21 6GS, UK
| | - Nikolaos Bournakas
- BicycleTx Limited, Portway Building, Granta Park, Cambridge CB21 6GS, UK
| | - Hector Newman
- BicycleTx Limited, Portway Building, Granta Park, Cambridge CB21 6GS, UK
- School of Life Sciences, University of Warwick, Coventry CV4 7AL, UK
| | - Michael J. Skynner
- BicycleTx Limited, Portway Building, Granta Park, Cambridge CB21 6GS, UK
| | - Paul Beswick
- BicycleTx Limited, Portway Building, Granta Park, Cambridge CB21 6GS, UK
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6
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Comparing Variants of the Cell-Penetrating Peptide sC18 to Design Peptide-Drug Conjugates. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27196656. [PMID: 36235193 PMCID: PMC9570898 DOI: 10.3390/molecules27196656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 09/21/2022] [Accepted: 09/22/2022] [Indexed: 11/17/2022]
Abstract
Herein, the design and synthesis of peptide-drug conjugates (PDCs) including different variants of the cell-penetrating peptide sC18 is presented. We first generated a series of novel sequence mutants of sC18 having either amino acid deletions and/or substitutions, and then tested their biological activity. The effects of histidine substituents were found to be not meaningful for sC18 uptake and cell selectivity. Moreover, building a nearly perfect amphipathic structure within a shortened sC18 derivative provided a peptide that was highly membrane-active, but also too cytotoxic. As a result, the most promising analog was sC18ΔE, which stands out due to its higher uptake efficacy compared to parent sC18. In the last set of experiments, we let the peptides react with the cytotoxic drug doxorubicin by Thiol-Michael addition to form novel PDCs. Our results indicate that sC18ΔE could be a more efficient drug carrier than parent sC18 for biomedical applications. However, cellular uptake using endocytosis and resulting entrapment of cargo inside vesicles is still a major critical step to overcome in CPP-containing peptide-drug development.
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7
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Yu T, Shi Y, Pan X, Feng Q, Wang P, Song S, Yang L, Yang J. BR2 cell penetrating peptide effectively delivers anti-p21Ras scFv to tumor cells with ganglioside expression for therapy of ras-driven tumor. PLoS One 2022; 17:e0269084. [PMID: 35648774 PMCID: PMC9159597 DOI: 10.1371/journal.pone.0269084] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Accepted: 05/13/2022] [Indexed: 11/19/2022] Open
Abstract
Purpose
Cell membrane penetrating peptide BR2 can bind with ganglioside and introduce foreign drugs into tumor cells. In this study, we employed BR2 to carry the broad-spectrum anti-p21Ras scFv prepared in our laboratory into ganglioside expressing tumor cells for therapy of ras-driven tumors.
Methods
BR2-p21Ras scFv gene was cloned to prokaryotic expression vector and expressed in E. coli BL21, then the fusion protein was purified with HisPur Ni-NTA. The immunoreactivity of the fusion protein with p21Ras was detected by ELISA and western blotting. The membrane-penetrating and immune co-localization with p21Ras of the fusion protein were determined by immunofluorescence. The antitumor activity was investigated using MTT, wound healing, colone formation, and apoptosis assays in vitro.
Results
BR2-p21Ras scFv fusion protein was successfully expressed and purified. We found that the fusion protein could specifically penetrate into human tumor cell lines which express ganglioside including human neuroblastoma cell line SK-N-SH, human colon cancer cell line HCT116 and human glioma cell line U251. After entering tumor cells the fusion protein bonded specifically with p21Ras. In vitro experiments revealed that it could significantly inhibit the proliferation, migration, and colone formation of HCT116, SK-N-SH, and U251 cells and promote the apoptosis of these tumor cells.
Conclusions
BR2-p21Ras scFv can penetrate ganglioside expressing tumor cells and inhibit the growth of ras-driven tumor by binding with p21Ras, and producing an inhibitory effect. It is suggested that BR2-p21Ras scFv is a potential ras-driven tumor therapeutic antibody.
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Affiliation(s)
- Ting Yu
- Department of Pathology, 920th Hospital of the Joint Logistics Support Force of PLA, Kunming, Yunnan, People’s Republic of China
- The Graduate School, Kunming Medical University, Kunming, Yunnan, People’s Republic of China
| | - Yingxian Shi
- Department of Pathology, 920th Hospital of the Joint Logistics Support Force of PLA, Kunming, Yunnan, People’s Republic of China
- Faculty of Medicine, Kunming University of Science and Technology, Kunming, Yunnan, People’s Republic of China
| | - Xinyan Pan
- Department of Pathology, 920th Hospital of the Joint Logistics Support Force of PLA, Kunming, Yunnan, People’s Republic of China
| | - Qiang Feng
- Department of Pathology, 920th Hospital of the Joint Logistics Support Force of PLA, Kunming, Yunnan, People’s Republic of China
| | - Peng Wang
- Department of Pathology, 920th Hospital of the Joint Logistics Support Force of PLA, Kunming, Yunnan, People’s Republic of China
- Faculty of Medicine, Kunming University of Science and Technology, Kunming, Yunnan, People’s Republic of China
| | - Shuling Song
- Department of Pathology, 920th Hospital of the Joint Logistics Support Force of PLA, Kunming, Yunnan, People’s Republic of China
| | - Lilin Yang
- Department of Pathology, 920th Hospital of the Joint Logistics Support Force of PLA, Kunming, Yunnan, People’s Republic of China
| | - Julun Yang
- Department of Pathology, 920th Hospital of the Joint Logistics Support Force of PLA, Kunming, Yunnan, People’s Republic of China
- The Graduate School, Kunming Medical University, Kunming, Yunnan, People’s Republic of China
- Faculty of Medicine, Kunming University of Science and Technology, Kunming, Yunnan, People’s Republic of China
- * E-mail:
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8
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González-Cruz AO, Hernández-Juárez J, Ramírez-Cabrera MA, Balderas-Rentería I, Arredondo-Espinoza E. Peptide-based drug-delivery systems: A new hope for improving cancer therapy. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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9
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Szabó I, Yousef M, Soltész D, Bató C, Mező G, Bánóczi Z. Redesigning of Cell-Penetrating Peptides to Improve Their Efficacy as a Drug Delivery System. Pharmaceutics 2022; 14:pharmaceutics14050907. [PMID: 35631493 PMCID: PMC9146218 DOI: 10.3390/pharmaceutics14050907] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 04/11/2022] [Accepted: 04/13/2022] [Indexed: 12/29/2022] Open
Abstract
Cell-penetrating peptides (CPP) are promising tools for the transport of a broad range of compounds into cells. Since the discovery of the first members of this peptide family, many other peptides have been identified; nowadays, dozens of these peptides are known. These peptides sometimes have very different chemical–physical properties, but they have similar drawbacks; e.g., non-specific internalization, fast elimination from the body, intracellular/vesicular entrapment. Although our knowledge regarding the mechanism and structure–activity relationship of internalization is growing, the prediction and design of the cell-penetrating properties are challenging. In this review, we focus on the different modifications of well-known CPPs to avoid their drawbacks, as well as how these modifications may increase their internalization and/or change the mechanism of penetration.
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Affiliation(s)
- Ildikó Szabó
- MTA-ELTE Research Group of Peptide Chemistry, Eötvös Loránd Research Network (ELKH), Eötvös Loránd University, 1117 Budapest, Hungary;
- Correspondence: (I.S.); (Z.B.)
| | - Mo’ath Yousef
- Department of Organic Chemistry, Institute of Chemistry, Eötvös Loránd University, 1117 Budapest, Hungary; (M.Y.); (D.S.); (C.B.)
| | - Dóra Soltész
- Department of Organic Chemistry, Institute of Chemistry, Eötvös Loránd University, 1117 Budapest, Hungary; (M.Y.); (D.S.); (C.B.)
| | - Csaba Bató
- Department of Organic Chemistry, Institute of Chemistry, Eötvös Loránd University, 1117 Budapest, Hungary; (M.Y.); (D.S.); (C.B.)
| | - Gábor Mező
- MTA-ELTE Research Group of Peptide Chemistry, Eötvös Loránd Research Network (ELKH), Eötvös Loránd University, 1117 Budapest, Hungary;
- Department of Organic Chemistry, Institute of Chemistry, Eötvös Loránd University, 1117 Budapest, Hungary; (M.Y.); (D.S.); (C.B.)
| | - Zoltán Bánóczi
- Department of Organic Chemistry, Institute of Chemistry, Eötvös Loránd University, 1117 Budapest, Hungary; (M.Y.); (D.S.); (C.B.)
- Correspondence: (I.S.); (Z.B.)
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10
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Abstract
AbstractBiophysical studies have a very high impact on the understanding of internalization, molecular mechanisms, interactions, and localization of CPPs and CPP/cargo conjugates in live cells or in vivo. Biophysical studies are often first carried out in test-tube set-ups or in vitro, leading to the complicated in vivo systems. This review describes recent studies of CPP internalization, mechanisms, and localization. The multiple methods in these studies reveal different novel and important aspects and define the rules for CPP mechanisms, hopefully leading to their improved applicability to novel and safe therapies.
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Affiliation(s)
- Matjaž Zorko
- University of Ljubljana, Medical Faculty, Institute of Biochemistry and Molecular Genetics, Vrazov trg 2, 1000Ljubljana, Slovenia,
| | - Ülo Langel
- University of Stockholm, Department of Biochemistry and Biophysics, Svante Arrhenius väg 16, 106 91 Stockholm, Sweden, , and Institute of Technology, University of Tartu, Nooruse 1, Tartu, Estonia, 50411
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11
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Wang T, Tian L, Cheng Q, Feng S, Zhang H, Zheng Z, Liu Y, Cheng M, Meng Z, Meng Q. Pep5-based antitumor peptides containing multifunctional fragments with enhanced activity and synergistic effect. Eur J Med Chem 2022; 237:114320. [DOI: 10.1016/j.ejmech.2022.114320] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 03/14/2022] [Accepted: 03/23/2022] [Indexed: 12/27/2022]
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12
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Rusiecka I, Gągało I, Kocić I. Cell-penetrating peptides improve pharmacokinetics and pharmacodynamics of anticancer drugs. Tissue Barriers 2022; 10:1965418. [PMID: 34402743 PMCID: PMC8794253 DOI: 10.1080/21688370.2021.1965418] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 08/01/2021] [Accepted: 08/02/2021] [Indexed: 10/20/2022] Open
Abstract
This review concentrates on the research concerning conjugates of anticancer drugs with versatile cell-penetrating peptides (CPPs). For a better insight into the relationship between the components of the constructs, it starts with the characteristic of the peptides and considers its following aspects: mechanisms of cellular internalization, interaction with cancer-modified membranes, selectivity against tumor tissue. Also, CPPs with anticancer activity have been distinguished and summarized with their mechanisms of action. With respect to the conjugates, the preclinical studies (in vitro, in vivo) indicated that they possess several merits in comparison to the parent drugs. They concerned not only better cellular internalization but also other improvements in pharmacokinetics (e.g. access to the brain tissue) and pharmacodynamics (e.g. overcoming drug resistance). The anticancer activity of the conjugates was usually superior to that of the unconjugated drug. Certain anticancer CPPs and conjugates entered clinical trials.
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Affiliation(s)
- Izabela Rusiecka
- Department of Pharmacology, Medical University of Gdansk, Gdansk, Poland
| | - Iwona Gągało
- Department of Pharmacology, Medical University of Gdansk, Gdansk, Poland
| | - Ivan Kocić
- Department of Pharmacology, Medical University of Gdansk, Gdansk, Poland
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13
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Nakase I, Takatani-Nakase T. Exosomes: Breast cancer-derived extracellular vesicles; recent key findings and technologies in disease progression, diagnostics, and cancer targeting. Drug Metab Pharmacokinet 2021; 42:100435. [PMID: 34922046 DOI: 10.1016/j.dmpk.2021.100435] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 11/15/2021] [Accepted: 11/24/2021] [Indexed: 02/07/2023]
Abstract
Breast cancer is one of the most frequently diagnosed types of cancer in women. Metastasis, particularly to the lungs and brain, increases mortality in breast cancer patients. Recently, breast cancer-related exosomes have received significant attention because of their key role in breast cancer progression. As a result, numerous exosome-based therapeutic tools for diagnosis and treatment have been developed, and their biological and chemical mechanisms have been explored. This review summarizes up-to-date advanced key findings and technologies in breast cancer progression, diagnostics, and targeting. We focused on recent research on the basic biology of exosomes and disease-related exosomal genes and proteins, as well as their signal transduction in cell-to-cell communications, diagnostic markers, and exosome-based antibreast cancer technologies. We also paid special attention to technologies employing exosomes modified with functional peptides for the targeted delivery of therapeutic and diagnostic agents.
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Affiliation(s)
- Ikuhiko Nakase
- Graduate School of Science, Osaka Prefecture University, 1-1, Gakuen-cho, Naka-ku, Sakai, Osaka, 599-8531, Japan.
| | - Tomoka Takatani-Nakase
- Department of Pharmaceutics, School of Pharmacy and Pharmaceutical Sciences, Mukogawa Women's University, 11-68, Koshien Kyuban-cho, Nishinomiya, Hyogo, 663-8179, Japan; Institute for Bioscience, Mukogawa Women's University, 11-68, Koshien Kyuban-cho, Nishinomiya, Hyogo, 663-8179, Japan.
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14
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Lützenburg T, Burdina N, Scholz MS, Neundorf I. Improving Membrane Activity and Cargo Delivery Efficacy of a Cell-Penetrating Peptide by Loading with Carboranes. Pharmaceutics 2021; 13:2075. [PMID: 34959356 PMCID: PMC8709211 DOI: 10.3390/pharmaceutics13122075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/17/2021] [Accepted: 12/01/2021] [Indexed: 01/15/2023] Open
Abstract
Cell-penetrating peptides (CPPs) have emerged as versatile tools to increase the intracellular accumulation of different kinds of cargoes. For an efficient cellular uptake and drug delivery, their organization into a distinct and stable secondary structure at the outer surface of the plasma membrane is a hallmark and supports optimal lipid-peptide interactions. Incorporation of hydrophobic moieties, such as carboranes (CBs), has the potential to increase the lipophilicity of peptides, and thus, to facilitate the formation of secondary structures. Herein, we present synthesis and biophysical as well as biological characterization of carborane-CPP conjugates having incorporated one or more CB clusters. Our results highlight the possibility to modulate the secondary structure of CPPs by the addition of CB's leading to constructs with altered membrane activity and promising use in terms of nucleic acid delivery.
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Affiliation(s)
- Tamara Lützenburg
- Institute for Biochemistry, Department of Chemistry, University of Cologne, Zülpicher Str. 47a, 50674 Cologne, Germany; (T.L.); (N.B.)
| | - Nele Burdina
- Institute for Biochemistry, Department of Chemistry, University of Cologne, Zülpicher Str. 47a, 50674 Cologne, Germany; (T.L.); (N.B.)
| | - Matthias S. Scholz
- Pharmaceutical Chemistry I & II, Pharmaceutical Institute, Faculty of Mathematics and Natural Sciences, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany;
| | - Ines Neundorf
- Institute for Biochemistry, Department of Chemistry, University of Cologne, Zülpicher Str. 47a, 50674 Cologne, Germany; (T.L.); (N.B.)
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15
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Oliveira FD, Cavaco M, Figueira TN, Valle J, Neves V, Andreu D, Gaspar D, Castanho MARB. The antimetastatic breast cancer activity of the viral protein-derived peptide vCPP2319 as revealed by cellular biomechanics. FEBS J 2021; 289:1603-1624. [PMID: 34679257 PMCID: PMC9298314 DOI: 10.1111/febs.16247] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 09/15/2021] [Accepted: 10/21/2021] [Indexed: 12/24/2022]
Abstract
The incidence of metastatic breast cancer (MBC) is increasing and the therapeutic arsenal available to fight it is insufficient. Brain metastases, in particular, represent a major challenge for chemotherapy as the impermeable nature of the blood–brain barrier (BBB) prevents most drugs from targeting cells in the brain. For their ability to transpose biological membranes and transport a broad spectrum of bioactive cargoes, cell‐penetrating peptides (CPPs) have been hailed as ideal candidates to deliver drugs across biological barriers. A more ambitious approach is to have the CPP as a drug itself, capable of both killing cancer cells and interacting with the blood/brain interface, therefore blocking the onset of brain metastases. vCPP2319, a viral protein‐derived CPP, has both properties as it: (a) is selective toward human breast cancer cells (MDA‐MB‐231) and increases cell stiffness compared to breast epithelial cells (MCF 10A) hindering the progression of metastases; and (b) adsorbs at the surface of human brain endothelial cells potentially counteracting metastatic cells from reaching the brain. Overall, the results reveal the selective anticancer activity of the peptide vCPP2319, which is also able to reside at the blood–brain interface, therefore counteracting brain penetration by metastatic cancer cells.
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Affiliation(s)
- Filipa D Oliveira
- Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, Portugal
| | - Marco Cavaco
- Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, Portugal
| | - Tiago N Figueira
- Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, Portugal
| | - Javier Valle
- Department of Experimental and Health Sciences, Barcelona Biomedical Research Park, Pompeu Fabra University, Barcelona, Spain
| | - Vera Neves
- Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, Portugal
| | - David Andreu
- Department of Experimental and Health Sciences, Barcelona Biomedical Research Park, Pompeu Fabra University, Barcelona, Spain
| | - Diana Gaspar
- Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, Portugal
| | - Miguel A R B Castanho
- Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, Portugal
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16
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Shoari A, Tooyserkani R, Tahmasebi M, Löwik DWPM. Delivery of Various Cargos into Cancer Cells and Tissues via Cell-Penetrating Peptides: A Review of the Last Decade. Pharmaceutics 2021; 13:1391. [PMID: 34575464 PMCID: PMC8470549 DOI: 10.3390/pharmaceutics13091391] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 08/23/2021] [Accepted: 08/30/2021] [Indexed: 01/03/2023] Open
Abstract
Cell-penetrating peptides (CPPs), also known as protein transduction domains, are a class of diverse amino acid sequences with the ability to cross cellular membranes. CPPs can deliver several bioactive cargos, including proteins, peptides, nucleic acids and chemotherapeutics, into cells. Ever since their discovery, synthetic and natural CPPs have been utilized in therapeutics delivery, gene editing and cell imaging in fundamental research and clinical experiments. Over the years, CPPs have gained significant attention due to their low cytotoxicity and high transduction efficacy. In the last decade, multiple investigations demonstrated the potential of CPPs as carriers for the delivery of therapeutics to treat various types of cancer. Besides their remarkable efficacy owing to fast and efficient delivery, a crucial benefit of CPP-based cancer treatments is delivering anticancer agents selectively, rather than mediating toxicities toward normal tissues. To obtain a higher therapeutic index and to improve cell and tissue selectivity, CPP-cargo constructions can also be complexed with other agents such as nanocarriers and liposomes to obtain encouraging outcomes. This review summarizes various types of CPPs conjugated to anticancer cargos. Furthermore, we present a brief history of CPP utilization as delivery systems for anticancer agents in the last decade and evaluate several reports on the applications of CPPs in basic research and preclinical studies.
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Affiliation(s)
- Alireza Shoari
- Department of Medical Biotechnology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran 14115-111, Iran; (A.S.); (R.T.); (M.T.)
- Bio-Organic Chemistry, Institute for Molecules and Materials, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Raheleh Tooyserkani
- Department of Medical Biotechnology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran 14115-111, Iran; (A.S.); (R.T.); (M.T.)
- Bio-Organic Chemistry, Institute for Molecules and Materials, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Mehdi Tahmasebi
- Department of Medical Biotechnology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran 14115-111, Iran; (A.S.); (R.T.); (M.T.)
| | - Dennis W. P. M. Löwik
- Bio-Organic Chemistry, Institute for Molecules and Materials, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
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17
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Noguchi K, Obuki M, Sumi H, Klußmann M, Morimoto K, Nakai S, Hashimoto T, Fujiwara D, Fujii I, Yuba E, Takatani-Nakase T, Neundorf I, Nakase I. Macropinocytosis-Inducible Extracellular Vesicles Modified with Antimicrobial Protein CAP18-Derived Cell-Penetrating Peptides for Efficient Intracellular Delivery. Mol Pharm 2021; 18:3290-3301. [PMID: 34365796 DOI: 10.1021/acs.molpharmaceut.1c00244] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The antimicrobial protein CAP18 (approximate molecular weight: 18 000), which was first isolated from rabbit granulocytes, comprises a C-terminal fragment that has negatively charged lipopolysaccharide binding activity. In this study, we found that CAP18 (106-121)-derived (sC18)2 peptides have macropinocytosis-inducible biological functions. In addition, we found that these peptides are highly applicable for use as extracellular vesicle (exosomes, EV)-based intracellular delivery, which is expected to be a next-generation drug delivery carrier. Here, we demonstrate that dimerized (sC18)2 peptides can be easily introduced on EV membranes when modified with a hydrophobic moiety, and that they show high potential for enhanced cellular uptake of EVs. By glycosaminoglycan-dependent induction of macropinocytosis, cellular EV uptake in targeted cells was strongly increased by the peptide modification made to EVs, and intriguingly, our herein presented technique is efficiently applicable for the cytosolic delivery of the biologically cell-killing functional toxin protein, saporin, which was artificially encapsulated in the EVs by electroporation, suggesting a useful technique for EV-based intracellular delivery of biofunctional molecules.
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Affiliation(s)
- Kosuke Noguchi
- Graduate School of Science, Osaka Prefecture University, 1-1, Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Momoko Obuki
- Graduate School of Science, Osaka Prefecture University, 1-1, Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Haruka Sumi
- Graduate School of Science, Osaka Prefecture University, 1-1, Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Merlin Klußmann
- Department of Chemistry, Biochemistry, University of Cologne, Zülpicher Strasse 47a, D-50674 Cologne, Germany
| | - Kenta Morimoto
- Graduate School of Science, Osaka Prefecture University, 1-1, Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Shinya Nakai
- Graduate School of Science, Osaka Prefecture University, 1-1, Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Takuya Hashimoto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1, Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Daisuke Fujiwara
- Graduate School of Science, Osaka Prefecture University, 1-1, Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Ikuo Fujii
- Graduate School of Science, Osaka Prefecture University, 1-1, Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Eiji Yuba
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1, Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Tomoka Takatani-Nakase
- Department of Pharmaceutics, School of Pharmacy and Pharmaceutical Sciences, Mukogawa Women's University, 11-68, Koshien Kyuban-cho, Nishinomiya, Hyogo 663-8179, Japan.,Institute for Bioscience, Mukogawa Women's University, 11-68, Koshien Kyuban-cho, Nishinomiya, Hyogo 663-8179, Japan
| | - Ines Neundorf
- Department of Chemistry, Biochemistry, University of Cologne, Zülpicher Strasse 47a, D-50674 Cologne, Germany
| | - Ikuhiko Nakase
- Graduate School of Science, Osaka Prefecture University, 1-1, Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan.,NanoSquare Research Institute, Osaka Prefecture University, 1-2, Gakuen-cho, Naka-ku, Sakai, Osaka 599-8570, Japan
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18
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Haseloer A, Lützenburg T, Strache JP, Neudörfl J, Neundorf I, Klein A. Building up Pt II -Thiosemicarbazone-Lysine-sC18 Conjugates. Chembiochem 2021; 22:694-704. [PMID: 32909347 PMCID: PMC7894172 DOI: 10.1002/cbic.202000564] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 09/03/2020] [Indexed: 12/12/2022]
Abstract
Three chiral tridentate N^N^S coordinating pyridine-carbaldehyde (S)-N4-(α-methylbenzyl)thiosemicarbazones (HTSCmB) were synthesised along with lysine-modified derivatives. One of them was selected and covalently conjugated to the cell-penetrating peptide sC18 by solid-phase peptide synthesis. The HTSCmB model ligands, the HTSCLp derivatives and the peptide conjugate rapidly and quantitatively form very stable PtII chlorido complexes [Pt(TSC)Cl] when treated with K2 PtCl4 in solution. The Pt(CN) derivatives were obtained from one TSCmB model complex and the peptide conjugate complex through Cl- →CN- exchange. Ligands and complexes were characterised by NMR, IR spectroscopy, HR-ESI-MS and single-crystal XRD. Intriguingly, no decrease in cell viability was observed when testing the biological activity of the lysine-tagged HdpyTSCLp, its sC18 conjugate HdpyTSCL-sC18 or the PtCl and Pt(CN) conjugate complexes in three different cell lines. Thus, given the facile and effective preparation of such Pt-TSC-peptide conjugates, these systems might pave the way for future use in late-stage labelling with Pt radionuclides and application in nuclear medicine.
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Affiliation(s)
- Alexander Haseloer
- Universität zu Köln, Department für ChemieInstitut für Anorganische ChemieGreinstraße 650939KölnGermany
| | - Tamara Lützenburg
- Universität zu KölnDepartment für Chemie, Institut für BiochemieZülpicher Strasse 47a50674KölnGermany
| | - Joss Pepe Strache
- Universität zu Köln, Department für ChemieInstitut für Anorganische ChemieGreinstraße 650939KölnGermany
| | - Jörg Neudörfl
- Universität zu KölnDepartment für Chemie, Institut für Organische ChemieGreinstraße 450939KölnGermany
| | - Ines Neundorf
- Universität zu KölnDepartment für Chemie, Institut für BiochemieZülpicher Strasse 47a50674KölnGermany
| | - Axel Klein
- Universität zu Köln, Department für ChemieInstitut für Anorganische ChemieGreinstraße 650939KölnGermany
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19
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Behzadi M, Arasteh S, Bagheri M. Palmitoylation of Membrane-Penetrating Magainin Derivatives Reinforces Necroptosis in A549 Cells Dependent on Peptide Conformational Propensities. ACS APPLIED MATERIALS & INTERFACES 2020; 12:56815-56829. [PMID: 33296603 DOI: 10.1021/acsami.0c17648] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Anticancer lipopeptides (ACLPs) are considered promising alternatives to combat resistant cancer cells, but the influence of peptide conformational propensity alone on their selectivity and mechanism remains obscure. In this study, we developed N-palmitoylated MK5E (P1MK5E) and MEK5 (P1MEK5) that have the same composition of 23 residues undergoing the pH-dependent structural alterations but differ in the conformational tendency of their amino acid composites. Nonlipidated peptides were readily accumulated in the A549 cell nucleus by the direct membrane translocation and the heparan sulfate-mediated endocytosis than the lipid-raft-dependent pathway. The increased hydrophobicity favored the amino acid-position-dependent folding of P1MK5E and P1MEK5, respectively, toward the α-helical coiled-coil nanofibrils and amyloidlike β-protofibrils. At the close concentrations (∼7.5 μM) to the toxic effects of doxorubicin (DOX), P1MK5E exhibited (i) an increased anticancer toxicity through a time-dependent S-phase arrest, (ii) enhanced plasma membrane permeability, and (iii) dose-dependent changes in the cell death characteristic features in the A549 cells relative to P1MEK5 that was almost inactive at ∼75 μM. These observations were in accordance with the TNF-α-mediated necroptotic signaling in the c-MYC/PARP1-overexpressed A549 cells exposed to P1MK5E and accompanied by the ultrastructure of plasma membrane protrusions, extensive endoplasmic reticulum (ER) membrane expansion, mitochondrial swelling, and the formation of distinct cytoplasmic vacuolation. The structural results and the bioactivity behaviors, herein, declared the significance of α-helical propensity in the peptide sequence and the nanostructure morphologies of self-assembling ACLPs upon the selectivity and enhanced anticancer effectiveness, which notably holds promise in the design and development of efficient therapeutics for cancer.
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Affiliation(s)
- Malihe Behzadi
- Peptide Chemistry Laboratory, Institute of Biochemistry and Biophysics, University of Tehran, 16 Azar Street, 14176-14335 Tehran, Iran
| | - Shima Arasteh
- Peptide Chemistry Laboratory, Institute of Biochemistry and Biophysics, University of Tehran, 16 Azar Street, 14176-14335 Tehran, Iran
| | - Mojtaba Bagheri
- Peptide Chemistry Laboratory, Institute of Biochemistry and Biophysics, University of Tehran, 16 Azar Street, 14176-14335 Tehran, Iran
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20
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Díaz-Gómez JL, Neundorf I, López-Castillo LM, Castorena-Torres F, Serna-Saldívar SO, García-Lara S. In Silico Analysis and In Vitro Characterization of the Bioactive Profile of Three Novel Peptides Identified from 19 kDa α-Zein Sequences of Maize. Molecules 2020; 25:E5405. [PMID: 33227894 PMCID: PMC7699256 DOI: 10.3390/molecules25225405] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 11/01/2020] [Accepted: 11/02/2020] [Indexed: 12/02/2022] Open
Abstract
In this study, we characterized three novel peptides derived from the 19 kDa α-zein, and determined their bioactive profile in vitro and developed a structural model in silico. The peptides, 19ZP1, 19ZP2 and 19ZP3, formed α-helical structures and had positive and negative electrostatic potential surfaces (range of -1 to +1). According to the in silico algorithms, the peptides displayed low probabilities for cytotoxicity (≤0.05%), cell penetration (10-33%) and antioxidant activities (9-12.5%). Instead, they displayed a 40% probability for angiotensin-converting enzyme (ACE) inhibitory activity. For in vitro characterization, peptides were synthesized by solid phase synthesis and tested accordingly. We assumed α-helical structures for 19ZP1 and 19ZP2 under hydrophobic conditions. The peptides displayed antioxidant activity and ACE-inhibitory activity, with 19ZP1 being the most active. Our results highlight that the 19 kDa α-zein sequences could be explored as a source of bioactive peptides, and indicate that in silico approaches are useful to predict peptide bioactivities, but more structural analysis is necessary to obtain more accurate data.
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Affiliation(s)
- Jorge L. Díaz-Gómez
- Escuela de Ingeniería y Ciencias, Tecnologico de Monterrey, 64849 Nuevo León, Mexico; (J.L.D.-G.); (L.-M.L.-C.); (S.O.S.-S.)
| | - Ines Neundorf
- Department für Chemie, Institut für Biochemie, Universität zu Köln, D-50674 Köln, Germany;
| | - Laura-Margarita López-Castillo
- Escuela de Ingeniería y Ciencias, Tecnologico de Monterrey, 64849 Nuevo León, Mexico; (J.L.D.-G.); (L.-M.L.-C.); (S.O.S.-S.)
| | | | - Sergio O. Serna-Saldívar
- Escuela de Ingeniería y Ciencias, Tecnologico de Monterrey, 64849 Nuevo León, Mexico; (J.L.D.-G.); (L.-M.L.-C.); (S.O.S.-S.)
| | - Silverio García-Lara
- Escuela de Ingeniería y Ciencias, Tecnologico de Monterrey, 64849 Nuevo León, Mexico; (J.L.D.-G.); (L.-M.L.-C.); (S.O.S.-S.)
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21
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Klimpel A, Stillger K, Wiederstein JL, Krüger M, Neundorf I. Cell-permeable CaaX-peptides affect K-Ras downstream signaling and promote cell death in cancer cells. FEBS J 2020; 288:2911-2929. [PMID: 33112492 DOI: 10.1111/febs.15612] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Revised: 08/17/2020] [Accepted: 10/26/2020] [Indexed: 12/18/2022]
Abstract
Cysteine prenylation is a post-translational modification that is used by nature to control crucial biological functions of proteins, such as membrane trafficking, signal transduction, and apoptosis. It mainly occurs in eukaryotic proteins at a C-terminal CaaX box and is mediated by prenyltransferases. Since the discovery of prenylated proteins, various tools have been developed to study the mechanisms of prenyltransferases, as well as to visualize and to identify prenylated proteins. Herein, we introduce cell-permeable peptides bearing a C-terminal CaaX motif based on Ras sequences. We demonstrate that intracellular accumulation of those peptides in different cells is controlled by the presence of their CaaX motif and that they specifically interact with intracellular prenyltransferases. As proof of concept, we further highlight their utilization to alter downstream signaling of Ras proteins, particularly of K-Ras-4B, in pancreatic cancer cells. Application of this strategy holds great promise to better understand and regulate post-translational cysteine prenylation.
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Affiliation(s)
- Annika Klimpel
- Institute for Biochemistry, University of Cologne, Germany
| | | | - Janica L Wiederstein
- Institute for Genetics, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Germany
| | - Marcus Krüger
- Institute for Genetics, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Germany.,Center for Molecular Medicine (CMMC), University of Cologne, Germany
| | - Ines Neundorf
- Institute for Biochemistry, University of Cologne, Germany
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22
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Yang L, Peltier R, Zhang M, Song D, Huang H, Chen G, Chen Y, Zhou F, Hao Q, Bian L, He ML, Wang Z, Hu Y, Sun H. Desuccinylation-Triggered Peptide Self-Assembly: Live Cell Imaging of SIRT5 Activity and Mitochondrial Activity Modulation. J Am Chem Soc 2020; 142:18150-18159. [DOI: 10.1021/jacs.0c08463] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Liu Yang
- Department of Chemistry and COSDAF (Centre of Super-Diamond and Advanced Films), City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China
- Key Laboratory of Biochip Technology, Biotech and Health Centre, Shenzhen Research Institute of City University of Hong Kong, Shenzhen 518057, China
| | - Raoul Peltier
- Department of Chemistry and COSDAF (Centre of Super-Diamond and Advanced Films), City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China
- Key Laboratory of Biochip Technology, Biotech and Health Centre, Shenzhen Research Institute of City University of Hong Kong, Shenzhen 518057, China
| | - Manman Zhang
- Key Laboratory of Biochip Technology, Biotech and Health Centre, Shenzhen Research Institute of City University of Hong Kong, Shenzhen 518057, China
- Department of Mechanical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Dan Song
- Department of Biomedical Science, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Hui Huang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Multidisciplinary Research Division, Institute of High Energy Physics and University of Chinese Academy of Sciences (UCAS), Chinese Academy of Sciences (CAS), Beijing 100049, China
| | - Ganchao Chen
- Department of Chemistry and COSDAF (Centre of Super-Diamond and Advanced Films), City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China
- Key Laboratory of Biochip Technology, Biotech and Health Centre, Shenzhen Research Institute of City University of Hong Kong, Shenzhen 518057, China
| | - Ying Chen
- Department of Biomedical Science, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Fanghang Zhou
- Department of Biomedical Science, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Quan Hao
- School of Biomedical Sciences, University of Hong Kong, Hong Kong, China
| | - Liming Bian
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Ming-liang He
- Department of Biomedical Science, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Zuankai Wang
- Key Laboratory of Biochip Technology, Biotech and Health Centre, Shenzhen Research Institute of City University of Hong Kong, Shenzhen 518057, China
- Department of Mechanical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Yi Hu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Multidisciplinary Research Division, Institute of High Energy Physics and University of Chinese Academy of Sciences (UCAS), Chinese Academy of Sciences (CAS), Beijing 100049, China
| | - Hongyan Sun
- Department of Chemistry and COSDAF (Centre of Super-Diamond and Advanced Films), City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China
- Key Laboratory of Biochip Technology, Biotech and Health Centre, Shenzhen Research Institute of City University of Hong Kong, Shenzhen 518057, China
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23
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Gessner I, Neundorf I. Nanoparticles Modified with Cell-Penetrating Peptides: Conjugation Mechanisms, Physicochemical Properties, and Application in Cancer Diagnosis and Therapy. Int J Mol Sci 2020; 21:E2536. [PMID: 32268473 PMCID: PMC7177461 DOI: 10.3390/ijms21072536] [Citation(s) in RCA: 98] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 03/28/2020] [Accepted: 04/03/2020] [Indexed: 12/27/2022] Open
Abstract
Based on their tunable physicochemical properties and the possibility of producing cell-specific platforms through surface modification with functional biomolecules, nanoparticles (NPs) represent highly promising tools for biomedical applications. To improve their potential under physiological conditions and to enhance their cellular uptake, combinations with cell-penetrating peptides (CPPs) represent a valuable strategy. CPPs are often cationic peptide sequences that are able to translocate across biological membranes and to carry attached cargos inside cells and have thus been recognized as versatile tools for drug delivery. Nevertheless, the conjugation of CPP to NP surfaces is dependent on many properties from both individual components, and further insight into this complex interplay is needed to allow for the fabrication of highly stable but functional vectors. Since CPPs per se are nonselective and enter nearly all cells likewise, additional decoration of NPs with homing devices, such as tumor-homing peptides, enables the design of multifunctional platforms for the targeted delivery of chemotherapeutic drugs. In this review, we have updated the recent advances in the field of CPP-NPs, focusing on synthesis strategies, elucidating the influence of different physicochemical properties, as well as their application in cancer research.
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Affiliation(s)
- Isabel Gessner
- Department of Chemistry, Inorganic Chemistry, University of Cologne, Greinstr 6, 50939 Cologne, Germany;
| | - Ines Neundorf
- Department of Chemistry, Biochemistry, University of Cologne, Zuelpicher Str. 47a, 50674 Cologne, Germany
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24
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Gessner I, Klimpel A, Klußmann M, Neundorf I, Mathur S. Interdependence of charge and secondary structure on cellular uptake of cell penetrating peptide functionalized silica nanoparticles. NANOSCALE ADVANCES 2020; 2:453-462. [PMID: 36133977 PMCID: PMC9418617 DOI: 10.1039/c9na00693a] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Accepted: 12/05/2019] [Indexed: 05/23/2023]
Abstract
The capability of cell-penetrating peptides (CPPs) to enable translocation of cargos across biological barriers shows promising pharmaceutical potential for the transport of drug molecules, as well as nanomaterials, into cells. Herein, we report on the optimization of a CPP, namely sC18, in terms of its translocation efficiency and investigate new CPPs regarding their interaction with silica nanoparticles (NPs). First, alanine scanning of sC18 yielded 16 cationic peptides from which two were selected for further studies. Whereas in the first case, a higher positive net charge and enhanced amphipathicity resulted in significantly higher internalization rates than sC18, the second one demonstrated reduced cellular uptake efficiencies and served as a control. We then attached these CPPs to silica nanoparticles of different sizes (50, 150 and 300 nm) via electrostatic interactions and could demonstrate that the secondary alpha-helical structure of the peptides was preserved. Following this, cellular uptake studies using HeLa cells showed that the tested CPP-NPs were successfully translocated into HeLa cells in a size-dependent manner. Moreover, depending on the CPP used, we realized differences in translocation efficiency, which were similar to what we had observed for the free peptides. All in all, we highlight the high potential of sequential fine-tuning of CPPs and provide novel insights into their interplay with inorganic biologically benign nanoparticles. Given the high cellular permeability of CPPs and their ability to translocate into a wide spectrum of cell types, our studies may stimulate future research of CPPs with inorganic nanocarrier surfaces.
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Affiliation(s)
- Isabel Gessner
- Institute of Inorganic Chemistry, University of Cologne Greinstr. 6 50939 Cologne Germany
| | - Annika Klimpel
- Institute of Biochemistry, University of Cologne Zuelpicher Str. 47 50674 Cologne Germany
| | - Merlin Klußmann
- Institute of Biochemistry, University of Cologne Zuelpicher Str. 47 50674 Cologne Germany
| | - Ines Neundorf
- Institute of Biochemistry, University of Cologne Zuelpicher Str. 47 50674 Cologne Germany
| | - Sanjay Mathur
- Institute of Inorganic Chemistry, University of Cologne Greinstr. 6 50939 Cologne Germany
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25
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Ruseska I, Zimmer A. Internalization mechanisms of cell-penetrating peptides. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2020; 11:101-123. [PMID: 31976201 PMCID: PMC6964662 DOI: 10.3762/bjnano.11.10] [Citation(s) in RCA: 220] [Impact Index Per Article: 55.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 12/18/2019] [Indexed: 05/19/2023]
Abstract
In today's modern era of medicine, macromolecular compounds such as proteins, peptides and nucleic acids are dethroning small molecules as leading therapeutics. Given their immense potential, they are highly sought after. However, their application is limited mostly due to their poor in vivo stability, limited cellular uptake and insufficient target specificity. Cell-penetrating peptides (CPPs) represent a major breakthrough for the transport of macromolecules. They have been shown to successfully deliver proteins, peptides, siRNAs and pDNA in different cell types. In general, CPPs are basic peptides with a positive charge at physiological pH. They are able to translocate membranes and gain entry to the cell interior. Nevertheless, the mechanism they use to enter cells still remains an unsolved piece of the puzzle. Endocytosis and direct penetration have been suggested as the two major mechanisms used for internalization, however, it is not all black and white in the nanoworld. Studies have shown that several CPPs are able to induce and shift between different uptake mechanisms depending on their concentration, cargo or the cell line used. This review will focus on the major internalization pathways CPPs exploit, their characteristics and regulation, as well as some of the factors that influence the cellular uptake mechanism.
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Affiliation(s)
- Ivana Ruseska
- Institute of Pharmaceutical Sciences, Department of Pharmaceutical Technology and Biopharmacy, University of Graz, 8010 Graz, Austria
| | - Andreas Zimmer
- Institute of Pharmaceutical Sciences, Department of Pharmaceutical Technology and Biopharmacy, University of Graz, 8010 Graz, Austria
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Feni L, Parente S, Robert C, Gazzola S, Arosio D, Piarulli U, Neundorf I. Kiss and Run: Promoting Effective and Targeted Cellular Uptake of a Drug Delivery Vehicle Composed of an Integrin-Targeting Diketopiperazine Peptidomimetic and a Cell-Penetrating Peptide. Bioconjug Chem 2019; 30:2011-2022. [PMID: 31243977 DOI: 10.1021/acs.bioconjchem.9b00292] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Cell-penetrating peptides (CPPs) have emerged as powerful tools in terms of drug delivery. Those short, often cationic peptides are characterized by their usually low toxicity and their ability to transport diverse cargos inside almost any kinds of cells. Still, one major drawback is their nonselective uptake making their application in targeted cancer therapies questionable. In this work, we aimed to combine the power of a CPP (sC18) with an integrin-targeting unit (c[DKP-f3-RGD]). The latter is composed of the Arg-Gly-Asp peptide sequence cyclized via a diketopiperazine scaffold and is characterized by its high selectivity toward integrin αvβ3. The two parts were linked via copper-catalyzed alkyne-azide click reaction (CuAAC), while the CPP was additionally functionalized with either a fluorescent dye or the anticancer drug daunorubicin. Both functionalities allowed a careful biological evaluation of these novel peptide-conjugates regarding their cellular uptake mechanism, as well as cytotoxicity in αvβ3 integrin receptor expressing cells versus cells that do not express αvβ3. Our results show that the uptake follows a "kiss-and-run"-like model, in which the conjugates first target and recognize the receptor, but translocate mainly by CPP mediation. Thereby, we observed significantly more pronounced toxic effects in αvβ3 expressing U87 cells compared to HT-29 and MCF-7 cells, when the cells were exposed to the substances with only very short contact times (15 min). All in all, we present new concepts for the design of cancer selective peptide-drug conjugates.
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Affiliation(s)
- Lucia Feni
- University of Cologne , Department of Chemistry, Biochemistry , Zülpicher Strasse 47a , D-50674 Cologne , Germany
| | - Sara Parente
- Dipartimento di Scienza e Alta Tecnologia , Università degli Studi dell'Insubria , Via Valleggio 11 , 22100 , Como , Italy
| | - Clémence Robert
- Dipartimento di Scienza e Alta Tecnologia , Università degli Studi dell'Insubria , Via Valleggio 11 , 22100 , Como , Italy
| | - Silvia Gazzola
- Dipartimento di Scienza e Alta Tecnologia , Università degli Studi dell'Insubria , Via Valleggio 11 , 22100 , Como , Italy
| | - Daniela Arosio
- Istituto di Scienze e Tecnologie Molecolari (ISTM), National Research Council (CNR) , Via G.Golgi 19 , 20133 , Milan , Italy
| | - Umberto Piarulli
- Dipartimento di Scienza e Alta Tecnologia , Università degli Studi dell'Insubria , Via Valleggio 11 , 22100 , Como , Italy
| | - Ines Neundorf
- University of Cologne , Department of Chemistry, Biochemistry , Zülpicher Strasse 47a , D-50674 Cologne , Germany
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Klimpel A, Lützenburg T, Neundorf I. Recent advances of anti-cancer therapies including the use of cell-penetrating peptides. Curr Opin Pharmacol 2019; 47:8-13. [PMID: 30771730 DOI: 10.1016/j.coph.2019.01.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 01/02/2019] [Accepted: 01/09/2019] [Indexed: 01/03/2023]
Abstract
Cancer is one of the major growing public health problems making the development of new anti-cancer treatment strategies still compulsory. Conventionally used chemotherapies are quite often associated with severe side effects. One reason is limited cell-permeability of the used drugs resulting in only poor overall bioavailability. During the last thirty years, cell-penetrating peptides (CPPs) have extensively been studied as efficient vehicles for several classes of cargos, and the development of novel therapeutic applications including CPPs has gained a major role in current cancer research. This review summarizes recent trends in CPP-mediated cargo delivery with a future impact on anti-cancer therapy.
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Affiliation(s)
- Annika Klimpel
- University of Cologne, Department of Chemistry, Biochemistry, Zülpicher Str. 47a, 50674 Cologne, Germany
| | - Tamara Lützenburg
- University of Cologne, Department of Chemistry, Biochemistry, Zülpicher Str. 47a, 50674 Cologne, Germany
| | - Ines Neundorf
- University of Cologne, Department of Chemistry, Biochemistry, Zülpicher Str. 47a, 50674 Cologne, Germany.
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Combination of Cell-Penetrating Peptides with Nanoparticles for Therapeutic Application: A Review. Biomolecules 2019; 9:biom9010022. [PMID: 30634689 PMCID: PMC6359287 DOI: 10.3390/biom9010022] [Citation(s) in RCA: 126] [Impact Index Per Article: 25.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 01/03/2019] [Accepted: 01/03/2019] [Indexed: 02/03/2023] Open
Abstract
Cell-penetrating peptides (CPPs), also known as protein translocation domains, membrane translocating sequences or Trojan peptides, are small molecules of 6 to 30 amino acid residues capable of penetrating biological barriers and cellular membranes. Furthermore, CPP have become an alternative strategy to overcome some of the current drug limitations and combat resistant strains since CPPs are capable of delivering different therapeutic molecules against a wide range of diseases. In this review, we address the recent conjugation of CPPs with nanoparticles, which constitutes a new class of delivery vectors with high pharmaceutical potential in a variety of diseases.
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Neundorf I. Antimicrobial and Cell-Penetrating Peptides: How to Understand Two Distinct Functions Despite Similar Physicochemical Properties. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1117:93-109. [PMID: 30980355 DOI: 10.1007/978-981-13-3588-4_7] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Antimicrobial and cell-penetrating peptides are both classes of membrane-active peptides sharing similar physicochemical properties. Both kinds of peptides have attracted much attention owing to their specific features. AMPs disrupt cell membranes of bacteria and display urgently needed antibiotic substances with alternative modes of action. Since the multidrug resistance of bacterial pathogens is a more and more raising concern, AMPs have gained much interest during the past years. On the other side, CPPs enter eukaryotic cells without substantially affecting the plasma membrane. They can be used as drug delivery platforms and have proven their usefulness in various applications. However, although both groups of peptides are quite similar, their intrinsic activity is often different, and responsible factors are still in discussion. The aim of this chapter is to summarize and shed light on recent findings and concepts dealing with differences and similarities of AMPs and CPPs and to understand these different functions.
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Affiliation(s)
- Ines Neundorf
- Department of Chemistry, Institute for Biochemistry, University of Cologne, Cologne, Germany.
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30
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Klimpel A, Neundorf I. Bifunctional peptide hybrids targeting the matrix of mitochondria. J Control Release 2018; 291:147-156. [DOI: 10.1016/j.jconrel.2018.10.029] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 10/05/2018] [Accepted: 10/22/2018] [Indexed: 12/17/2022]
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Design of a novel cell-permeable chimeric peptide to promote wound healing. Sci Rep 2018; 8:16279. [PMID: 30389988 PMCID: PMC6214915 DOI: 10.1038/s41598-018-34684-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 10/22/2018] [Indexed: 01/06/2023] Open
Abstract
Biological membranes are impermeable to almost all compounds having a molecular weight greater than 500 Da. Recently, cell penetrating peptides (CPPs) as delivery vehicles have attracted great interest in the medical sector for the development of novel therapeutic agents or cosmetic products. Herein, a wound healing promoting sequence, namely Tylotoin, was covalently coupled with a cell penetrating peptide to improve the delivery of Tylotoin across cellular membranes. Indeed, internalization studies indicated that the cellular uptake of these novel peptide conjugates into keratinocytes was significantly improved accompanied by good tolerability. In a scratch wound closure assay used to investigate the wound healing capability, the most promising novel peptide chimera (Tylotoin-sC18*) was found to promote the migration of keratinocytes indicating that the fusion to Tylotoin did not cause any loss in its activity. Even more, proliferative effects on keratinocytes were observed, an important step during the wound healing process. Still more encouraging is the capability of Tylotoin-sC18* to exhibit strong antimicrobial activities since the process of wound healing is often affected by bacterial infections. Owing to their multiple functions, the novel peptide chimera may have potential as future agents for the treatment of infected wounds.
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Miyamoto K, Nakatani A, Sunagawa M, Saito K. Unique auto-ubiquitination activities of artificial RING fingers in cancer cells. Protein Sci 2018; 27:1704-1709. [PMID: 30152188 PMCID: PMC6194272 DOI: 10.1002/pro.3452] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 06/06/2018] [Indexed: 12/27/2022]
Abstract
Ubiquitin-conjugating (E2) enzymes in protein ubiquitination are associated with various diseases. An artificial RING finger (ARF) is a useful tool, and E2 activities are conveniently estimated based on ARF reactivities. To extend the use of ARF in cells, we constructed a TAT-ARF using a cell-penetrating trans-activator protein (TAT) peptide. An in vitro ubiquitination assay without substrates showed auto-ubiquitination of TAT-ARF via its TAT region. TAT-ARF was translocated into MCF7 breast cancer cells, and then TAT-ARF ubiquitinated itself via its ARF. Experiments using confocal laser-scanning microscopy revealed that FAM-labeled TAT-ARF was readily internalized in cells and it remained encapsulated in vesicles. The Cell Counting Kit-8 assay indicated that the TAT-ARF uptake occurred without cytotoxicity in MCF7 cells at concentrations below 5.0 μM. By taking advantage of TAT-ARF, we, for the first time, succeeded in detecting E2 activities in cells. Thus, the present work opens up new avenues in the investigation of protein ubiquitination.
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Affiliation(s)
- Kazuhide Miyamoto
- Department of Pharmaceutical Health Care, Faculty of Pharmaceutical SciencesHimeji Dokkyo UniversityHyogoJapan
| | - Arisa Nakatani
- Department of Pharmaceutical Health Care, Faculty of Pharmaceutical SciencesHimeji Dokkyo UniversityHyogoJapan
| | - Mayumi Sunagawa
- Department of Pharmaceutical Health Care, Faculty of Pharmaceutical SciencesHimeji Dokkyo UniversityHyogoJapan
| | - Kazuki Saito
- Department of Pharmaceutical Health Care, Faculty of Pharmaceutical SciencesHimeji Dokkyo UniversityHyogoJapan
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Direct carborane-peptide conjugates: Synthesis and evaluation as non-natural lipopeptide mimetics. Chem Phys Lipids 2018; 213:62-67. [DOI: 10.1016/j.chemphyslip.2018.03.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 03/14/2018] [Accepted: 03/26/2018] [Indexed: 12/22/2022]
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Gronewold A, Horn M, Neundorf I. Design and biological characterization of novel cell-penetrating peptides preferentially targeting cell nuclei and subnuclear regions. Beilstein J Org Chem 2018; 14:1378-1388. [PMID: 29977402 PMCID: PMC6009097 DOI: 10.3762/bjoc.14.116] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 05/16/2018] [Indexed: 12/16/2022] Open
Abstract
Within this study, we report about the design and biological characterization of novel cell-penetrating peptides (CPPs) with selective suborganelle-targeting properties. The nuclear localization sequence N50, as well as the nucleoli-targeting sequence NrTP, respectively, were fused to a shortened version of the cell-penetrating peptide sC18. We examined cellular uptake, subcellular fate and cytotoxicity of these novel peptides, N50-sC18* and NrTP-sC18*, and found that they are nontoxic up to a concentration of 50 or 100 µM depending on the cell lines used. Moreover, detailed cellular uptake studies revealed that both peptides enter cells via energy-independent uptake, although endocytotic processes cannot completely excluded. However, initial drug delivery studies demonstrated the high versatility of these new peptides as efficient transport vectors targeting specifically nuclei and nucleoli. In future, they could be further explored as parts of newly created peptide-drug conjugates.
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Affiliation(s)
- Anja Gronewold
- Department of Chemistry, Biochemistry, University of Cologne, Zuelpicher Str. 47a, 50674 Cologne, Germany
| | - Mareike Horn
- Department of Chemistry, Biochemistry, University of Cologne, Zuelpicher Str. 47a, 50674 Cologne, Germany
| | - Ines Neundorf
- Department of Chemistry, Biochemistry, University of Cologne, Zuelpicher Str. 47a, 50674 Cologne, Germany
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35
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Cell-penetrating peptide-based non-invasive topical delivery systems. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2017. [DOI: 10.1007/s40005-017-0373-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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36
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Biological characterization of novel nitroimidazole-peptide conjugates in vitr
o and in vivo. J Pept Sci 2017; 23:597-609. [DOI: 10.1002/psc.2995] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 03/02/2017] [Accepted: 03/02/2017] [Indexed: 12/31/2022]
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37
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Gronewold A, Horn M, Ranđelović I, Tóvári J, Muñoz Vázquez S, Schomäcker K, Neundorf I. Characterization of a Cell-Penetrating Peptide with Potential Anticancer Activity. ChemMedChem 2017; 12:42-49. [PMID: 27860402 PMCID: PMC5516705 DOI: 10.1002/cmdc.201600498] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 11/03/2016] [Indexed: 12/25/2022]
Abstract
Cell-penetrating peptides (CPPs) are still an interesting and viable alternative for drug delivery applications. CPPs contain considerably high amounts of positively charged amino acids, imparting them with cationic character. Tumor cells are characterized by an enhanced anionic nature of their membrane surface, a property that could be used by CPPs to target these cells. We recently identified a branched CPP that displays a high internalization capacity while exhibiting selectivity for certain tumor cell types. In this study we elucidated this observation in greater detail by investigating the underlying mechanism behind the cellular uptake of this peptide. An additional cytotoxicity screen against several cancer cell lines indeed demonstrates high cytotoxic activity against cancer cells over normal fibroblasts. Furthermore, we show that this feature can be used for delivering the anticancer drug actinomycin D with high efficiency in the MCF-7 cancer cell line.
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Affiliation(s)
- Anja Gronewold
- University of CologneDepartment of ChemistryInstitute of BiochemistryZuelpicher Str. 4750674CologneGermany
| | - Mareike Horn
- University of CologneDepartment of ChemistryInstitute of BiochemistryZuelpicher Str. 4750674CologneGermany
| | - Ivan Ranđelović
- National Institute of OncologyDepartment of Experimental PharmacologyRáth Gy. u. 7–9112BudapestHungary
| | - József Tóvári
- National Institute of OncologyDepartment of Experimental PharmacologyRáth Gy. u. 7–9112BudapestHungary
| | - Sergio Muñoz Vázquez
- University Hospital of CologneDepartment of Nuclear MedicineKerpener Str. 6250937CologneGermany
| | - Klaus Schomäcker
- University Hospital of CologneDepartment of Nuclear MedicineKerpener Str. 6250937CologneGermany
| | - Ines Neundorf
- University of CologneDepartment of ChemistryInstitute of BiochemistryZuelpicher Str. 4750674CologneGermany
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