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Lee J, Oh ET, Lee HJ, Lee E, Kim HG, Park HJ, Kim C. Tuning of Peptide Cytotoxicity with Cell Penetrating Motif Activatable by Matrix Metalloproteinase-2. ACS OMEGA 2022; 7:29684-29691. [PMID: 36061651 PMCID: PMC9434767 DOI: 10.1021/acsomega.2c02127] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 08/04/2022] [Indexed: 05/30/2023]
Abstract
Although diverse cell penetrating motifs not only from naturally occurring proteins but also from synthetic peptides have been discovered and developed, the selectivity of cargo delivery connected to these motifs into the desired target cells is generally low. Here, we demonstrate the selective cytotoxicity tuning of an anticancer KLA peptide with a cell penetrating motif activatable by matrix metalloproteinase-2 (MMP2). The anionic masking sequence introduced at the end of the KLA peptide through an MMP2-cleavable linker is selectively cleaved by MMP2 and the cationic cell penetrating motif is activated. Upon treatment of the peptide to H1299 cells (high MMP2 level), it is selectively internalized into the cells by MMP2, which consequently induces membrane disruption and cell death. In contrast, the peptide shows negligible cytotoxicity toward A549 cancer cells with low MMP2 levels. Furthermore, the selective therapeutic efficacy of the peptide induced by MMP2 is also corroborated using in vivo study.
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Affiliation(s)
- Jeonghun Lee
- Department
of Polymer Science and Engineering, Program in Environmental and Polymer
Engineering, Inha University, Incheon 22212, Korea
| | - Eun-Taex Oh
- Department
of Biomedical Sciences, School of Medicine, Inha University, Incheon 22212, Korea
| | - Hae-June Lee
- Division
of Radiation Biomedical Research, Korea
Institute of Radiological & Medical Sciences, Seoul 01812, Korea
| | - Eunkyoung Lee
- Department
of Polymer Science and Engineering, Program in Environmental and Polymer
Engineering, Inha University, Incheon 22212, Korea
| | - Ha Gyeong Kim
- Department
of Microbiology, Research Center for Controlling Intracellular Communication,
Program in Biomedical Science & Engineering, Inha University, Incheon 22212, Korea
| | - Heon Joo Park
- Department
of Microbiology, Research Center for Controlling Intracellular Communication,
Program in Biomedical Science & Engineering, Inha University, Incheon 22212, Korea
| | - Chulhee Kim
- Department
of Polymer Science and Engineering, Program in Environmental and Polymer
Engineering, Inha University, Incheon 22212, Korea
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2
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Co-Delivery of 5-Fluorouracil and Paclitaxel in Mitochondria-Targeted KLA-Modified Liposomes to Improve Triple-Negative Breast Cancer Treatment. Pharmaceuticals (Basel) 2022; 15:ph15070881. [PMID: 35890181 PMCID: PMC9318860 DOI: 10.3390/ph15070881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 07/14/2022] [Accepted: 07/15/2022] [Indexed: 11/19/2022] Open
Abstract
In this research, KLA-modified liposomes co-loaded with 5-fluorouracil and paclitaxel (KLA-5-FU/PTX Lps) were developed, and their antitumor activity against triple-negative breast cancer (TNBC) was evaluated. KLA-5-FU/PTX Lps were prepared using the thin-film dispersion method, and their in vitro anticancer efficacy was assessed in human breast cancer cells (MDA-MB-231). An MDA-MB-231 tumor-bearing mouse model was also established to evaluate their antitumor efficacy in vivo. KLA-5-FU/PTX Lps showed enhanced cytotoxicity against MDA-MB-231 cells, improved drug delivery to mitochondria, and induced mitochondria-mediated apoptosis. The modified liposomes also showed favorable antitumor activity in vivo due to their strong ability to target tumors and mitochondria. The liposomes showed no obvious systemic toxicity. Our results suggest that KLA-5-FU/PTX Lps are a promising system with which to target the delivery of antitumor drugs to mitochondria as a treatment for TNBC.
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3
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Kang Z, Wang C, Zhang Z, Liu Q, Zheng Y, Zhao Y, Pan Z, Li Q, Shi L, Liu Y. Spatial Distribution Control of Antimicrobial Peptides through a Novel Polymeric Carrier for Safe and Efficient Cancer Treatment. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2201945. [PMID: 35385590 DOI: 10.1002/adma.202201945] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 03/31/2022] [Indexed: 06/14/2023]
Abstract
Antimicrobial peptides (AMPs) hold great potential for use in tumor treatment. However, developing AMP-based antitumor therapies is challenging due to circulatory instability, hemolytic toxicity, low selectivity, and poor cell permeability of AMPs. In this study, a polymeric carrier for AMPs (denoted as PAMPm -co-PPBEn /PCA) is presented that effectively enhances their anticancer efficacy while minimizing their potential side effects. By integrating multiple responsive structures at the molecular level, the carrier finely controls the spatial distribution of AMPs in different biological microenvironments, thereby effectively modulating their membranolytic ability. Upon employing KLA as the model AMP, the polymeric carrier's hemolytic toxicity during blood circulation is suppressed, its cellular internalization when reaching tumor tissues facilitated, and its membranolytic toxicity toward the mitochondria upon entering cancer cells restored and further enhanced. Animal studies indicate that this approach significantly improves the antitumor efficacy of KLA and reduces its toxicity. Considering that the loading method for most AMPs is identical to that of KLA, the polymeric carrier reported in this study may provide a feasible approach for the development of AMP-based cancer treatments.
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Affiliation(s)
- Ziyao Kang
- Key Laboratory of Functional Polymer Materials of Ministry of Education, College of Chemistry, Nankai University; State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, P. R. China
| | - Chun Wang
- Key Laboratory of Functional Polymer Materials of Ministry of Education, College of Chemistry, Nankai University; State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, P. R. China
| | - Zhanzhan Zhang
- Key Laboratory of Functional Polymer Materials of Ministry of Education, College of Chemistry, Nankai University; State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, P. R. China
| | - Qi Liu
- Key Laboratory of Functional Polymer Materials of Ministry of Education, College of Chemistry, Nankai University; State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, P. R. China
| | - Yadan Zheng
- Key Laboratory of Functional Polymer Materials of Ministry of Education, College of Chemistry, Nankai University; State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, P. R. China
| | - Yu Zhao
- Key Laboratory of Functional Polymer Materials of Ministry of Education, College of Chemistry, Nankai University; State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, P. R. China
| | - Zheng Pan
- Key Laboratory of Functional Polymer Materials of Ministry of Education, College of Chemistry, Nankai University; State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, P. R. China
| | - Qiushi Li
- Key Laboratory of Functional Polymer Materials of Ministry of Education, College of Chemistry, Nankai University; State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, P. R. China
| | - Linqi Shi
- Key Laboratory of Functional Polymer Materials of Ministry of Education, College of Chemistry, Nankai University; State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, P. R. China
| | - Yang Liu
- Key Laboratory of Functional Polymer Materials of Ministry of Education, College of Chemistry, Nankai University; State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, P. R. China
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4
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Wang S, Gao CZ, Liu X, Wu FG, Han X. Long-Chain Poly-d-Lysines Interact with the Plasma Membrane and Induce Protective Autophagy and Intense Cell Necrosis. Bioconjug Chem 2022; 33:938-947. [PMID: 35442635 DOI: 10.1021/acs.bioconjchem.2c00153] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Polylysines have been frequently used in drug delivery and antimicrobial and cell adhesion studies. Because of steric hindrance, chirality plays a major role in the functional difference between poly-l-lysine (PLL) and poly-d-lysine (PDL), especially when they interact with the plasma membranes of mammalian cells. Therefore, it is speculated that the interaction between chiral polylysines and the plasma membrane may cause different cellular behaviors. Here, we carefully investigated the interaction pattern of PLL and PDL with plasma membranes. We found that PDL could be anchored onto the plasma membrane and interact with the membrane lipids, leading to the rapid morphological change and death of A549 cells (a human lung cancer cell line) and HPAEpiCs (a human pulmonary alveolar epithelial cell line). In contrast, PLL exhibited good cytocompatibility and was not anchored onto the plasma membranes of these cells. Unlike PLL, PDL could trigger protective autophagy to prevent cells in a certain degree, and the PDL-caused cell death occurred via intense necrosis (featured by increased intracellular Ca2+ content and plasma membrane disruption). In addition, it was found that the short-chain PDL with a repeat unit number of 9 (termed DL9) could locate in lysosomes and induce autophagy at high concentrations, but it could not elicit drastic cell death, which proved that the repeat unit number of polylysine could affect its cellular action. This research confirms that the interaction between chiral polylysines and the plasma membrane can induce autophagy and intense necrosis, which provides guidance for the future studies of chiral molecules/drugs.
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Affiliation(s)
- Shujing Wang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, National Demonstration Center for Experimental, Biomedical Engineering Education, Southeast University, Nanjing 210096, China
| | - Cheng-Zhe Gao
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, National Demonstration Center for Experimental, Biomedical Engineering Education, Southeast University, Nanjing 210096, China
| | - Xiaoyang Liu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, National Demonstration Center for Experimental, Biomedical Engineering Education, Southeast University, Nanjing 210096, China
| | - Fu-Gen Wu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, National Demonstration Center for Experimental, Biomedical Engineering Education, Southeast University, Nanjing 210096, China
| | - Xiaofeng Han
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, National Demonstration Center for Experimental, Biomedical Engineering Education, Southeast University, Nanjing 210096, China
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5
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Yuan X, Qin Y, Tian Q, Liu C, Meng X, Qie B, Gao F, Huang Y, Xu G, Yang G, Zhu Y. Smart delivery of poly-peptide composite for effective cancer therapy. Biomed Mater 2022; 17:024103. [PMID: 34996052 DOI: 10.1088/1748-605x/ac494c] [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: 09/07/2021] [Accepted: 01/07/2022] [Indexed: 01/10/2023]
Abstract
In the past decade, multifunctional peptides have attracted increasing attention in the biomedical field. Peptides possess many impressive advantages, such as high penetration ability, low cost, and etc. However, the short half-life and instability of peptides limit their application. In this study, a poly-peptide drug loading system (called HKMA composite) was designed based on the different functionalities of four peptides. The peptide compositions of HKMA composite from N-terminal to C-terminal were HCBP1, KLA, matrix metalloproteinase-2 (MMP-2)-cleavable peptide and albumin-binding domain. The targeting and lethality of HKMA to NSCLC cell line H460 sphere cells and the half-life of the system were measuredin vivo. The results showed that the HKMA composite had a long half-life and specific killing effect on H460 sphere cellsin vitroandin vivo. Our result proposed smart peptide drug loading system and provided a potential methodology for effective cancer treatment.
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Affiliation(s)
- Xin Yuan
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei 230026, People's Republic of China
- Key Laboratory of Nano-Bio Interface Research, Division of Nano biomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, People's Republic of China
| | - Yingzhou Qin
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei 230026, People's Republic of China
- Key Laboratory of Nano-Bio Interface Research, Division of Nano biomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, People's Republic of China
| | - Qingmei Tian
- Key Laboratory of Nano-Bio Interface Research, Division of Nano biomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, People's Republic of China
- School of Pharmacy, Xi'an Jiaotong University, Xi'an 710061, People's Republic of China
| | - Cuijuan Liu
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei 230026, People's Republic of China
- Key Laboratory of Nano-Bio Interface Research, Division of Nano biomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, People's Republic of China
| | - Xiangzhou Meng
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei 230026, People's Republic of China
- Key Laboratory of Nano-Bio Interface Research, Division of Nano biomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, People's Republic of China
| | - Bo Qie
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei 230026, People's Republic of China
- Key Laboratory of Nano-Bio Interface Research, Division of Nano biomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, People's Republic of China
| | - Fan Gao
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei 230026, People's Republic of China
- Key Laboratory of Nano-Bio Interface Research, Division of Nano biomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, People's Republic of China
| | - Ying Huang
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei 230026, People's Republic of China
- Key Laboratory of Nano-Bio Interface Research, Division of Nano biomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, People's Republic of China
| | - Guanghui Xu
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei 230026, People's Republic of China
- Key Laboratory of Nano-Bio Interface Research, Division of Nano biomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, People's Republic of China
| | - Guang Yang
- Department of Oncology, Suzhou BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Suzhou 215000, People's Republic of China
| | - Yimin Zhu
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei 230026, People's Republic of China
- Key Laboratory of Nano-Bio Interface Research, Division of Nano biomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, People's Republic of China
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6
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Lee J, Oh ET, Lee E, Park HJ, Kim C. Induced cytotoxicity of peptides by intracellular native chemical ligation. NEW J CHEM 2022. [DOI: 10.1039/d2nj02053j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The intracellular NCL reaction of peptide with both N-terminal cysteine and C-terminal crypto-thioester with protecting groups occurs naturally in cancer cells, which endows peptide with induced cytotoxicity.
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Affiliation(s)
- Jeonghun Lee
- Department of Polymer Science and Engineering, Program in Environmental and Polymer Engineering, Inha University, Incheon, 22212, Korea
| | - Eun-Taex Oh
- Department of Biomedical Sciences, School of Medicine, Inha University, Incheon, 22212, Korea
| | - Eunkyung Lee
- Department of Polymer Science and Engineering, Program in Environmental and Polymer Engineering, Inha University, Incheon, 22212, Korea
| | - Heon Joo Park
- Department of Microbiology, Hypoxia-related Disease Research Center, College of Medicine, Inha University, Incheon, 22212, Korea
| | - Chulhee Kim
- Department of Polymer Science and Engineering, Program in Environmental and Polymer Engineering, Inha University, Incheon, 22212, Korea
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7
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Tang R, Song Y, Shi M, Jiang Z, Zhang L, Xiao Y, Tian Y, Zhou S. Rational Design of a Dual-Targeting Natural Toxin-Like Bicyclic Peptide for Selective Bioenergetic Blockage in Cancer Cells. Bioconjug Chem 2021; 32:2173-2183. [PMID: 34606715 DOI: 10.1021/acs.bioconjchem.1c00366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Stapled α-helical peptides emerge as one of the attractive peptidomimetics which can efficiently penetrate the cell membrane to access intracellular targets. However, the incorporation of a highly lipophilic cross-link may lead to nonspecific membrane toxicity in certain cases. Here, we report a new class of thioether-tethered bicyclic α-helical peptide to mimic the highly constrained loop-helix structure of natural toxins with the dual-targeting ability for both cell-surface receptors and intracellular targets. The thioether cross-links are introduced to replace the redox-sensitive disulfide bonds in natural toxins via a photoinduced thiol-yne reaction followed by macrolactamization. As a proof of concept, αVβ3 integrin targeting ligand was grafted into one of the macrocycles in the bicyclic scaffold, while a mitochondria-targeting proapoptotic motif was introduced into the other macrocycle stabilized by an i, i + 7 alkyl thioether cross-link to recapitulate its α-helical conformation. The obtained dual-targeting bicyclic α-helical BIRK peptides showed highly stable α-helical conformation in the presence of denaturants or under high temperature. Notably, BIRK peptides could induce selective cell death in αVβ3 integrin-positive B16F10 cells by interfering with the bioenergetic functions of mitochondria. This work provides a new avenue to design and stabilize α-helical peptides in a highly constrained bicyclic loop-helix scaffold with dual functionality.
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Affiliation(s)
- Rui Tang
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, P. R. China
| | - Yue Song
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, P. R. China
| | - Mengzhen Shi
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, P. R. China
| | - Zherui Jiang
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, P. R. China
| | - Ling Zhang
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, P. R. China
| | - Yao Xiao
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, P. R. China
| | - Yuan Tian
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, P. R. China
| | - Shaobing Zhou
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, P. R. China
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8
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Liu Y, Hu K, Yin F, Li Z. Facile Chemoselective Modification of Thioethers Generates Chiral Center-Induced Helical Peptides. Methods Mol Biol 2021; 2355:301-322. [PMID: 34386967 DOI: 10.1007/978-1-0716-1617-8_23] [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] [Indexed: 06/13/2023]
Abstract
The modulation of protein-protein interactions (PPIs) is a promising way for interrogating disease. Stapled peptides that stabilize peptides into a fixed α-helical conformation via chemical means are important representative compounds for regulating PPIs. The effect of the secondary conformation of peptides on the biophysical properties has not been explicitly elucidated due to the difficulty of obtaining peptide epimers with the same chemical composition but different conformations. Herein, we systematically designed and demonstrated the concept of "Chiral Center-Induced Helicity" (CIH) to stabilize the secondary structure of peptides. By introducing a precise R-configuration chiral center on the side-ring of a peptide, researchers can decisively regulate the secondary structure of peptides. Through the study of CIH peptides, we found that increasing the helicity can significantly enhance the stability of peptides and improve the cell membrane penetrating capability of the peptides. Moreover, the substitution group in the chiral center could contribute to additional interactions with the binding groove, which shows great significance for fragment-based drug design. This chapter will focus on the method involved in this research, including specific protocols of the synthesis and basic characterization of CIH peptides in Subheading 3.1. In addition, we have also extended the concept of CIH to dual-chiral center systems, including sulfoxide-based and sulfonium-based in-tether chiral center peptides, which we will introduce in Subheadings 3.2 and 3.3.
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Affiliation(s)
- Yinghuan Liu
- State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School, Peking University, Shenzhen, China
| | - Kuan Hu
- State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School, Peking University, Shenzhen, China
| | - Feng Yin
- State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School, Peking University, Shenzhen, China
| | - Zigang Li
- State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School, Peking University, Shenzhen, China.
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Feng JP, Zhu R, Jiang F, Xie J, Gao C, Li M, Jin H, Fu D. Melittin-encapsulating peptide hydrogels for enhanced delivery of impermeable anticancer peptides. Biomater Sci 2020; 8:4559-4569. [PMID: 32672773 DOI: 10.1039/c9bm02080b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Anticancer peptides (ACPs) have gained significant attention in the past few years. Most ACPs only act toward intracellular targets. However, their low membrane penetrability often limits their anticancer efficacy. Here we developed a novel melittin-RADA28 (MR) hydrogel, composed of RADA28 and melittin, through a peptide fusion method in order to promote the membrane permeability of tumor cells with the membrane-disrupting ability of melittin. As a proof of concept, we loaded the MR hydrogel with a therapeutic peptide, KLA (KLAKLAKKLAKLAK), to show the enhanced delivery efficiency of the hydrogel. Our results demonstrated that the formed melittin-RADA28-KLA peptide (MRP) hydrogel has a nanofiber structure, sustained release profile, and attenuated hemolysis effects. Compared with free KLA, the MRP hydrogel markedly increased the cellular accumulation of KLA, produced the highest ratio of the depolarized mitochondrial membrane, and decreased cell viability in vitro. Following peritumoral injection, the MRP hydrogel treatment suppressed CT26 tumor growth by more than 85%, compared to controls. In summary, we provide a facile and efficient strategy to enhance the delivery of impermeable peptides to improve their therapeutic efficiency.
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Affiliation(s)
- Jue-Ping Feng
- Department of Oncology, Wuhan Fourth Hospital; PuAi Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430034, China.
| | - Ru Zhu
- Department of Ophthalmology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Fagang Jiang
- Department of Ophthalmology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Jie Xie
- Department of Oncology, Wuhan Fourth Hospital; PuAi Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430034, China.
| | - Chang Gao
- Department of Oncology, Wuhan Fourth Hospital; PuAi Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430034, China.
| | - Min Li
- Department of Oncology, Wuhan Fourth Hospital; PuAi Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430034, China.
| | - Honglin Jin
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Dehao Fu
- Department of Orthopaedics, West Campus, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430056, China.
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10
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Yang F, Zhang W, Jiang Y, Yin F, Han W, Li Z. Targeting the Amyloid-β Fibril Surface with a Constrained Helical Peptide Inhibitor. Biochemistry 2020; 59:290-296. [PMID: 31702899 DOI: 10.1021/acs.biochem.9b00800] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Amyloid-β (Aβ) oligomers are well-known toxic molecular species associated with Alzheimer's disease. Recent discoveries of the ability of amyloid fibril surfaces to convert soluble proteins into toxic oligomers suggested that these surfaces could serve as therapeutic targets for intervention. We have shown previously that a short helical peptide could be a key structural motif that can specifically recognize the K16-E22 region of the Aβ40 fibril surface with an affinity at the level of several micromolar. Here, we demonstrate that in-tether chiral center-induced helical stabilized peptides could also recognize the fibril surfaces, effectively inhibiting the surface-mediated oligomerization of Aβ40. Moreover, through extensive computational sampling, we observed two distinct ways in which the peptide inhibitors recognize the fibril surface. Apart from a binding mode that, in accord with the original design, involves hydrophobic side chains at the binding interface, we observed much more frequently another binding mode in which the hydrophobic staple interacts directly with the fibril surface. The affinity of the peptides for the fibril surface could be adjusted by tuning the hydrophobicity of the staple. The best candidate investigated here exhibits a submicromolar affinity (∼0.75 μM). Collectively, this work opens an avenue for the rational design of candidate drugs with stapled peptides for amyloid-related disease.
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Affiliation(s)
- Fadeng Yang
- State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology , Shenzhen Graduate School of Peking University , Shenzhen 518055 , China
| | - Wan Zhang
- State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology , Shenzhen Graduate School of Peking University , Shenzhen 518055 , China
| | - Yixiang Jiang
- State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology , Shenzhen Graduate School of Peking University , Shenzhen 518055 , China.,Shenzhen Bay Laboratory , Shenzhen 518055 , China
| | - Feng Yin
- State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology , Shenzhen Graduate School of Peking University , Shenzhen 518055 , China.,Shenzhen Bay Laboratory , Shenzhen 518055 , China
| | - Wei Han
- State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology , Shenzhen Graduate School of Peking University , Shenzhen 518055 , China
| | - Zigang Li
- State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology , Shenzhen Graduate School of Peking University , Shenzhen 518055 , China.,Shenzhen Bay Laboratory , Shenzhen 518055 , China
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11
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Lee J, Oh ET, Joo YE, Kim HG, Park HJ, Kim C. Stimulus-responsive conformational transformation of peptide with cell penetrating motif for triggered cytotoxicity. NEW J CHEM 2020. [DOI: 10.1039/d0nj04608f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A modified KLA peptide with an intramolecular disulfide bond and a cell penetrating sequence is developed for enhanced intracellular uptake and triggered selective cytotoxicity towards cancer cells by stimulus-responsive conformational transformation.
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Affiliation(s)
- Jeonghun Lee
- Department of Polymer Science and Engineering
- Inha University
- Incheon 22212
- Korea
| | - Eun-Taex Oh
- Department of Biomedical Sciences
- School of Medicine
- Inha University
- Incheon 22212
- Korea
| | - Ye-eun Joo
- Department of Polymer Science and Engineering
- Inha University
- Incheon 22212
- Korea
| | - Ha Gyeong Kim
- Department of Microbiology
- Hypoxia-Related Disease Research Center
- College of Medicine
- Inha University
- Incheon 22212
| | - Heon Joo Park
- Department of Microbiology
- Hypoxia-Related Disease Research Center
- College of Medicine
- Inha University
- Incheon 22212
| | - Chulhee Kim
- Department of Polymer Science and Engineering
- Inha University
- Incheon 22212
- Korea
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Lee J, Lee H, Kim C. Stimuli-responsive conformational transformation of antimicrobial peptides stapled with an azobenzene unit. NEW J CHEM 2020. [DOI: 10.1039/d0nj03409f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The effect of the azobenzene-stapling position on the triggered transformation of the helical conformation of KLA peptides in response to UV irradiation and reductive cleavage is investigated.
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Affiliation(s)
- Jeonghun Lee
- Department of Polymer Science and Engineering
- Inha University
- Incheon 22212
- Korea
| | - Hanwool Lee
- Department of Polymer Science and Engineering
- Inha University
- Incheon 22212
- Korea
| | - Chulhee Kim
- Department of Polymer Science and Engineering
- Inha University
- Incheon 22212
- Korea
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13
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Li Y, Lian C, Hou Z, Wang D, Wang R, Wan C, Zhong W, Zhao R, Wang Y, Li S, Yin F, Li Z. Intramolecular methionine alkylation constructs sulfonium tethered peptides for protein conjugation. Chem Commun (Camb) 2020; 56:3741-3744. [DOI: 10.1039/d0cc00377h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Continuous efforts have been invested in the selective modification of proteins.
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14
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Lee J, Oh ET, Lee H, Kim J, Kim HG, Park HJ, Kim C. Stimuli-Responsive Conformational Transformation of Peptides for Tunable Cytotoxicity. Bioconjug Chem 2019; 31:43-50. [DOI: 10.1021/acs.bioconjchem.9b00730] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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15
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Shi X, Liu Y, Zhao R, Li Z. Constructing Thioether/Vinyl Sulfide-tethered Helical Peptides Via Photo-induced Thiol-ene/yne Hydrothiolation. J Vis Exp 2018. [PMID: 30124641 DOI: 10.3791/57356] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Here, we describe a detailed protocol for the preparation of thioether-tethered peptides using on-resin intramolecular/intermolecular thiol-ene hydrothiolation. In addition, this protocol describes the preparation of vinyl-sulfide-tethered peptides using in-solution intramolecular thiol-yne hydrothiolation between amino acids that possess alkene/alkyne side chains and cysteine residues at i, i+4 positions. Linear peptides were synthesized using a standard Fmoc-based solid-phase peptide synthesis (SPPS). Thiol-ene hydrothiolation is carried out using either an intramolecular thio-ene reaction or an intermolecular thio-ene reaction, depending on the peptide length. In this research, an intramolecular thio-ene reaction is carried out in the case of shorter peptides using on-resin deprotection of the trityl groups of cysteine residues following the complete synthesis of the linear peptide. The resin is then set to UV irradiation using photoinitiator 4-methoxyacetophenone (MAP) and 2-hydroxy-1-[4-(2-hydroxyethoxy)-phenyl]-2-methyl-1-propanone (MMP). The intermolecular thiol-ene reaction is carried out by dissolving Fmoc-Cys-OH in an N,N-dimethylformamide (DMF) solvent. This is then reacted with the peptide using the alkene-bearing residue on resin. After that, the macrolactamization is carried out using benzotriazole-1-yl-oxytripyrrolidinophosphonium hexafluorophosphate (PyBop), 1-hydroxybenzotriazole (HoBt), and 4-Methylmorpholine (NMM) as activation reagents on the resin. Following the macrolactamization, the peptide synthesis is continued using standard SPPS. In the case of the thio-yne hydrothiolation, the linear peptide is cleaved from the resin, dried, and subsequently dissolved in degassed DMF. This is then irradiated using UV light with photoinitiator 2,2-dimethoxy-2-phenylacetophenone (DMPA). Following the reaction, DMF is evaporated and the crude residue is precipitated and purified using high-performance liquid chromatography (HPLC). These methods could function to simplify the generation of thioether-tethered cyclic peptides due to the use of the thio-ene/yne click chemistry that possesses superior functional group tolerance and good yield. The introduction of thioether bonds into peptides takes advantage of the nucleophilic nature of cysteine residues and is redox-inert relative to disulfide bonds.
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Affiliation(s)
- Xiaodong Shi
- Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School
| | - Yinghuan Liu
- Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School
| | - Rongtong Zhao
- Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School
| | - Zigang Li
- Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School;
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Xie N, Feng K, Shao J, Chen B, Tung CH, Wu LZ. A simple, modular synthesis of bifunctional peptide-polynorbornenes for apoptosis induction and fluorescence imaging of cancer cells. Polym Chem 2018. [DOI: 10.1039/c7py01730h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Bifunctional peptide-polynorbornenes were designed and fabricated via modular ROMP for mitochondrial-dependent apoptosis induction and fluorescence imaging of cancer cells.
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Affiliation(s)
- Nan Xie
- School of Pharmaceutical Sciences
- Capital Medical University
- Beijing 100069
- P. R. China
| | - Ke Feng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & School of Future Technology
- University of CAS
- the Chinese Academy of Sciences
- Beijing 100190
| | - Jianqun Shao
- School of Pharmaceutical Sciences
- Capital Medical University
- Beijing 100069
- P. R. China
| | - Bin Chen
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & School of Future Technology
- University of CAS
- the Chinese Academy of Sciences
- Beijing 100190
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & School of Future Technology
- University of CAS
- the Chinese Academy of Sciences
- Beijing 100190
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & School of Future Technology
- University of CAS
- the Chinese Academy of Sciences
- Beijing 100190
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