1
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Sundell GN, Tao SC. Phage immunoprecipitation and sequencing-a versatile technique for mapping the antibody reactome. Mol Cell Proteomics 2024:100831. [PMID: 39168282 DOI: 10.1016/j.mcpro.2024.100831] [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: 04/10/2024] [Revised: 08/13/2024] [Accepted: 08/16/2024] [Indexed: 08/23/2024] Open
Abstract
Characterizing the antibody reactome for circulating antibodies provide insight into pathogen exposure, allergies and autoimmune diseases. This is important for biomarker discovery, clinical diagnosis, and prognosis of disease progression, as well as population-level insights into the immune system. The emerging technology phage display immunoprecipitation and sequencing (PhIP-seq) is a high-throughput method for identifying antigens/epitopes of the antibody reactome. In PhIP-seq, libraries with sequences of defined lengths and overlapping segments are bioinformatically designed using naturally occurring proteins and cloned into phage genomes to be displayed on the surface. These libraries are used in immunoprecipitation experiments of circulating antibodies. This can be done with parallel samples from multiple sources, and the DNA inserts from the bound phages are barcoded and subjected to next-generation sequencing for hit-determination. PhIP-seq is a powerful technique for characterizing the antibody reactome that has undergone rapid advances in recent years. In this review, we comprehensively describe the history of PhIP-seq and discuss recent advances in library design and applications.
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Affiliation(s)
- Gustav N Sundell
- Shanghai Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
| | - Sheng-Ce Tao
- Shanghai Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China.
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2
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Ullrich S, Somathilake U, Shang M, Nitsche C. Phage-encoded bismuth bicycles enable instant access to targeted bioactive peptides. Commun Chem 2024; 7:143. [PMID: 38937646 PMCID: PMC11211329 DOI: 10.1038/s42004-024-01232-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Accepted: 06/20/2024] [Indexed: 06/29/2024] Open
Abstract
Genetically encoded libraries play a crucial role in discovering structurally rigid, high-affinity macrocyclic peptide ligands for therapeutic applications. Bicyclic peptides with metal centres like bismuth were recently developed as a new type of constrained peptide with notable affinity, stability and membrane permeability. This study represents the genetic encoding of peptide-bismuth and peptide-arsenic bicycles in phage display. We introduce bismuth tripotassium dicitrate (gastrodenol) as a water-soluble bismuth(III) reagent for phage library modification and in situ bicyclic peptide preparation, eliminating the need for organic co-solvents. Additionally, we explore arsenic(III) as an alternative thiophilic element that is used analogously to our previously introduced bicyclic peptides with a bismuth core. The modification of phage libraries and peptides with these elements is instantaneous and entirely biocompatible, offering an advantage over conventional alkylation-based methods. In a pilot display screening campaign aimed at identifying ligands for the biotin-binding protein streptavidin, we demonstrate the enrichment of bicyclic peptides with dissociation constants two orders of magnitude lower than those of their linear counterparts, underscoring the impact of structural constraint on binding affinity.
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Affiliation(s)
- Sven Ullrich
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Upamali Somathilake
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Minghao Shang
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Christoph Nitsche
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia.
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3
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Chen FJ, Pinnette N, Gao J. Strategies for the Construction of Multicyclic Phage Display Libraries. Chembiochem 2024; 25:e202400072. [PMID: 38466139 DOI: 10.1002/cbic.202400072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 03/05/2024] [Accepted: 03/11/2024] [Indexed: 03/12/2024]
Abstract
Peptide therapeutics have gained great interest due to their multiple advantages over small molecule and antibody-based drugs. Peptide drugs are easier to synthesize, have the potential for oral bioavailability, and are large enough to target protein-protein interactions that are undruggable by small molecules. However, two major limitations have made it difficult to develop novel peptide therapeutics not derived from natural products, including the metabolic instability of peptides and the difficulty of reaching antibody-like potencies and specificities. Compared to linear and disulfide-monocyclized peptides, multicyclic peptides can provide increased conformational rigidity, enhanced metabolic stability, and higher potency in inhibiting protein-protein interactions. The identification of novel multicyclic peptide binders can be difficult, however, recent advancements in the construction of multicyclic phage libraries have greatly advanced the process of identifying novel multicyclic peptide binders for therapeutically relevant protein targets. This review will describe the current approaches used to create multicyclic peptide libraries, highlighting the novel chemistries developed and the proof-of-concept work done on validating these libraries against different protein targets.
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Affiliation(s)
- Fa-Jie Chen
- College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350108, China
| | - Nicole Pinnette
- Department of Chemistry, Boston College, Merkert Chemistry Center 2609 Beacon Street, Chestnut Hill, MA-02467, USA
| | - Jianmin Gao
- Department of Chemistry, Boston College, Merkert Chemistry Center 2609 Beacon Street, Chestnut Hill, MA-02467, USA
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4
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Chen FJ, Lin W, Chen FE. Non-symmetric stapling of native peptides. Nat Rev Chem 2024; 8:304-318. [PMID: 38575678 DOI: 10.1038/s41570-024-00591-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/23/2024] [Indexed: 04/06/2024]
Abstract
Stapling has emerged as a powerful technique in peptide chemistry. It enables precise control over peptide conformation leading to enhanced properties such as improved stability and enhanced binding affinity. Although symmetric stapling methods have been extensively explored, the field of non-symmetric stapling of native peptides has received less attention, largely as a result of the formidable challenges it poses - in particular the complexities involved in achieving the high chemo-selectivity and site-selectivity required to simultaneously modify distinct proteinogenic residues. Over the past 5 years, there have been significant breakthroughs in addressing these challenges. In this Review, we describe the latest strategies for non-symmetric stapling of native peptides, elucidating the protocols, reaction mechanisms and underlying design principles. We also discuss current challenges and opportunities this field offers for future applications, such as ligand discovery and peptide-based therapeutics.
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Affiliation(s)
- Fa-Jie Chen
- College of Chemistry, Fuzhou University, Fuzhou, P. R. China.
| | - Wanzhen Lin
- College of Pharmacy, Fujian University of Traditional Chinese Medicine, Fuzhou, P. R. China
| | - Fen-Er Chen
- College of Chemistry, Fuzhou University, Fuzhou, P. R. China.
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai, P. R. China.
- Shanghai Engineering Research Center of Industrial Asymmetric Catalysis of Chiral Drugs, Fudan University, Shanghai, P. R. China.
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5
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Song Y, Lei L, Cai X, Wei H, Yu CY. Immunomodulatory Peptides for Tumor Treatment. Adv Healthc Mater 2024:e2400512. [PMID: 38657003 DOI: 10.1002/adhm.202400512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 04/07/2024] [Indexed: 04/26/2024]
Abstract
Peptides exhibit various biological activities, including biorecognition, cell targeting, and tumor penetration, and can stimulate immune cells to elicit immune responses for tumor immunotherapy. Peptide self-assemblies and peptide-functionalized nanocarriers can reduce the effect of various biological barriers and the degradation by peptidases, enhancing the efficiency of peptide delivery and improving antitumor immune responses. To date, the design and development of peptides with various functionalities have been extensively reviewed for enhanced chemotherapy; however, peptide-mediated tumor immunotherapy using peptides acting on different immune cells, to the knowledge, has not yet been summarized. Thus, this work provides a review of this emerging subject of research, focusing on immunomodulatory anticancer peptides. This review introduces the role of peptides in the immunomodulation of innate and adaptive immune cells, followed by a link between peptides in the innate and adaptive immune systems. The peptides are discussed in detail, following a classification according to their effects on different innate and adaptive immune cells, as well as immune checkpoints. Subsequently, two delivery strategies for peptides as drugs are presented: peptide self-assemblies and peptide-functionalized nanocarriers. The concluding remarks regarding the challenges and potential solutions of peptides for tumor immunotherapy are presented.
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Affiliation(s)
- Yang Song
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, 421001, China
| | - Longtianyang Lei
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, 421001, China
| | - Xingyu Cai
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, 421001, China
| | - Hua Wei
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, 421001, China
| | - Cui-Yun Yu
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, 421001, China
- Affiliated Hospital of Hunan Academy of Chinese Medicine, Hunan Academy of Chinese Medicine, Changsha, 410013, China
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6
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Li Y, Yang KD, Duan HY, Du YN, Ye JF. Phage-based peptides for pancreatic cancer diagnosis and treatment: alternative approach. Front Microbiol 2023; 14:1231503. [PMID: 37601380 PMCID: PMC10433397 DOI: 10.3389/fmicb.2023.1231503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 07/06/2023] [Indexed: 08/22/2023] Open
Abstract
Pancreatic cancer is a devastating disease with a high mortality rate and a lack of effective therapies. The challenges associated with early detection and the highly aggressive nature of pancreatic cancer have limited treatment options, underscoring the urgent need for better disease-modifying therapies. Peptide-based biotherapeutics have become an attractive area of research due to their favorable properties such as high selectivity and affinity, chemical modifiability, good tissue permeability, and easy metabolism and excretion. Phage display, a powerful technique for identifying peptides with high affinity and specificity for their target molecules, has emerged as a key tool in the discovery of peptide-based drugs. Phage display technology involves the use of bacteriophages to express peptide libraries, which are then screened against a target of interest to identify peptides with desired properties. This approach has shown great promise in cancer diagnosis and treatment, with potential applications in targeting cancer cells and developing new therapies. In this comprehensive review, we provide an overview of the basic biology of phage vectors, the principles of phage library construction, and various methods for binding affinity assessment. We then describe the applications of phage display in pancreatic cancer therapy, targeted drug delivery, and early detection. Despite its promising potential, there are still challenges to be addressed, such as optimizing the selection process and improving the pharmacokinetic properties of phage-based drugs. Nevertheless, phage display represents a promising approach for the development of novel targeted therapies in pancreatic cancer and other tumors.
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Affiliation(s)
- Yang Li
- General Surgery Center, First Hospital of Jilin University, Changchun, China
- School of Nursing, Jilin University, Changchun, China
| | - Kai-di Yang
- General Surgery Center, First Hospital of Jilin University, Changchun, China
- School of Nursing, Jilin University, Changchun, China
| | - Hao-yu Duan
- General Surgery Center, First Hospital of Jilin University, Changchun, China
- School of Nursing, Jilin University, Changchun, China
| | - Ya-nan Du
- General Surgery Center, First Hospital of Jilin University, Changchun, China
- School of Nursing, Jilin University, Changchun, China
| | - Jun-feng Ye
- General Surgery Center, First Hospital of Jilin University, Changchun, China
- School of Nursing, Jilin University, Changchun, China
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7
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Chen FJ, Pinnette N, Yang F, Gao J. A Cysteine-Directed Proximity-Driven Crosslinking Method for Native Peptide Bicyclization. Angew Chem Int Ed Engl 2023; 62:e202306813. [PMID: 37285100 PMCID: PMC10527288 DOI: 10.1002/anie.202306813] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 06/02/2023] [Accepted: 06/05/2023] [Indexed: 06/08/2023]
Abstract
Efficient and site-specific modification of native peptides and proteins is desirable for synthesizing antibody-drug conjugates as well as for constructing chemically modified peptide libraries using genetically encoded platforms such as phage display. In particular, there is much interest in efficient multicyclization of native peptides due to the appeals of multicyclic peptides as therapeutics. However, conventional approaches for multicyclic peptide synthesis require orthogonal protecting groups or non-proteinogenic clickable handles. Herein, we report a cysteine-directed proximity-driven strategy for the constructing bicyclic peptides from simple natural peptide precursors. This linear to bicycle transformation initiates with rapid cysteine labeling, which then triggers proximity-driven amine-selective cyclization. This bicyclization proceeds rapidly under physiologic conditions, yielding bicyclic peptides with a Cys-Lys-Cys, Lys-Cys-Lys or N-terminus-Cys-Cys stapling pattern. We demonstrate the utility and power of this strategy by constructing bicyclic peptides fused to proteins as well as to the M13 phage, paving the way to phage display of novel bicyclic peptide libraries.
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Affiliation(s)
- Fa-Jie Chen
- Department of Chemistry, Boston College, Merkert Chemistry Center, 2609 Beacon Street, Chestnut Hill, MA 02467, USA
| | - Nicole Pinnette
- Department of Chemistry, Boston College, Merkert Chemistry Center, 2609 Beacon Street, Chestnut Hill, MA 02467, USA
| | - Fan Yang
- Department of Chemistry, Boston College, Merkert Chemistry Center, 2609 Beacon Street, Chestnut Hill, MA 02467, USA
| | - Jianmin Gao
- Department of Chemistry, Boston College, Merkert Chemistry Center, 2609 Beacon Street, Chestnut Hill, MA 02467, USA
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8
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Wang P, Liu J, Zhu X, Yan Z, Yan J, Jiang J, Fu M, Ge J, Zhu Q, Zheng Y. Modular synthesis of clickable peptides via late-stage maleimidation on C(7)-H tryptophan. Nat Commun 2023; 14:3973. [PMID: 37407547 DOI: 10.1038/s41467-023-39703-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 06/20/2023] [Indexed: 07/07/2023] Open
Abstract
Cyclic peptides have attracted tremendous attention in the pharmaceutical industry owing to their excellent cell penetrability, stability, thermostability, and drug-like properties. However, the currently available facile methodologies for creating such peptides are rather limited. Herein, we report an efficient and direct peptide cyclization via rhodium(III)-catalyzed C(7)-H maleimidation. Notably, this catalytical system has excellent regioselectivity and high tolerance of functional groups which enable late-stage cyclization of peptides. This architecture of cyclic peptides exhibits higher bioactivity than its parent linear peptides. Moreover, the Trp-substituted maleimide displays excellent reactivity toward Michael addition, indicating its potential as a click functional group for applications in chemical biology and medicinal chemistry. As a proof of principle, RGD-GFLG-DOX, which is a peptide-drug-conjugate, is constructed and it displays a strong binding affinity and high antiproliferative activity toward integrin-αvβ3 overexpressed cancer cell lines. The proposed strategy for rapid preparation of stapled peptides would be a robust tool for creating peptide-drug conjugates.
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Affiliation(s)
- Peng Wang
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Jiang Liu
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Xiaomei Zhu
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Zhengqing Yan
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Jiahui Yan
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Jitong Jiang
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Manlin Fu
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Jingyan Ge
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Qing Zhu
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China.
| | - Yuguo Zheng
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China
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9
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Randall JR, Wang X, Groover KE, O'Donnell AC, Davies BW. Using display technologies to identify macrocyclic peptide antibiotics. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2023; 1870:119473. [PMID: 37011732 PMCID: PMC10198949 DOI: 10.1016/j.bbamcr.2023.119473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 02/09/2023] [Accepted: 02/19/2023] [Indexed: 04/03/2023]
Abstract
Antibiotic resistant bacterial infections are now a leading cause of global mortality. While drug resistance continues to spread, the clinical antibiotic pipeline has become bare. This discord has focused attention on developing new strategies for antimicrobial discovery. Natural macrocyclic peptide-based products have provided novel antibiotics and antibiotic scaffolds targeting several essential bacterial cell envelope processes, but discovery of such natural products remains a slow and inefficient process. Synthetic strategies employing peptide display technologies can quickly screen large libraries of macrocyclic sequences for specific target binding and general antibacterial potential providing alternative approaches for new antibiotic discovery. Here we review cell envelope processes that can be targeted with macrocyclic peptide therapeutics, outline important macrocyclic peptide display technologies, and discuss future strategies for both library design and screening.
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Affiliation(s)
- Justin R Randall
- University of Texas at Austin, Department of Molecular Biosciences, Austin, TX, USA.
| | - Xun Wang
- University of Texas at Austin, Department of Molecular Biosciences, Austin, TX, USA
| | - Kyra E Groover
- University of Texas at Austin, Department of Molecular Biosciences, Austin, TX, USA
| | - Angela C O'Donnell
- University of Texas at Austin, Department of Molecular Biosciences, Austin, TX, USA
| | - Bryan W Davies
- University of Texas at Austin, Department of Molecular Biosciences, Austin, TX, USA.
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10
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Katsuki R, Numayama T, Tabuchi Y, Sharma J, Satake N, Sandhu A, Taki M. Solvatochromic peptidic binder obtained via extended phage display acts as a fluororeporter for fragment-based drug discovery (FBDD). Anal Bioanal Chem 2022; 414:4803-4807. [DOI: 10.1007/s00216-022-04128-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 05/09/2022] [Accepted: 05/11/2022] [Indexed: 11/29/2022]
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11
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Gressel J. Perspective: It is time to consider new ways to attack unpesticidable (undruggable) target sites by designing peptide pesticides. PEST MANAGEMENT SCIENCE 2022; 78:2108-2112. [PMID: 35088529 DOI: 10.1002/ps.6817] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 01/20/2022] [Accepted: 01/27/2022] [Indexed: 06/14/2023]
Abstract
Evolved resistance and regulatory deregistration have severely limited farmers' pesticide options. Many potential new pesticide target sites have been elucidated using targeted gene suppression and mutational tools, but few small molecules could be found that inhibit the target enzymes; the targets were considered 'undruggable'. Some organisms from all biological kingdoms use toxic peptides to ward off or kill enemies, and the agrochemical industry has used a few peptide analogs (glufosinate and bialophos) for field application. Conversely, pharmaceutical scientists have been using three-dimensional target protein structure to discover and synthesize short peptides that bind tightly to the surfaces of, and inhibit previously undruggable targets. New computational tools to quickly elucidate 3-D protein structure from amino acid sequence have just emerged. They replace crystallizing target proteins and performing X-ray crystallography to elucidate 3-D structure. These new tools allow prediction of peptides that will bind to the target proteins. They have further modified such peptides to enhance penetration, translocation and temperature stability. There is reason to assume that the same pioneering techniques can be used to develop peptide pesticides as well as pesticide synergists that act against undruggable targets and have excellent environmental and toxicological profiles. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Jonathan Gressel
- Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot, Israel and Hi-Cap Formulations (Israel) Ltd, Rehovot, Israel
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12
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Liu H, Yan Z, Zhao Y, Ma X, Zhang H, Wang X, Zhuang W, Zheng Y, Liu B, Zhang L, Gao C. A Peptide Derived from IKK-Interacting Protein Attenuates NF-κB Activation and Inflammation. THE JOURNAL OF IMMUNOLOGY 2021; 207:1652-1661. [PMID: 34426543 DOI: 10.4049/jimmunol.2100397] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 07/17/2021] [Indexed: 12/30/2022]
Abstract
The IκB kinase (IKK) complex plays a vital role in regulating the NF-κB activation. Aberrant NF-κB activation is involved in various inflammatory diseases. Thus, targeting IKK activation is an ideal therapeutic strategy to cure and prevent inflammatory diseases related to NF-κB activation. In a previous study, we demonstrated that IKK-interacting protein (IKIP) inhibits the phosphorylation of IKKα/β and the activation of NF-κB through disruption of the formation of IKK complex. In this study, we identified a 15-aa peptide derived from mouse IKIP (46-60 aa of IKIP), which specifically suppressed IKK activation and NF-κB targeted gene expression via disrupting the association of IKKβ and NEMO. Importantly, administration of the peptide reduced LPS-induced acute inflammation and attenuated Zymosan-induced acute arthritis in mice. These findings suggest that this IKIP peptide may be a promising therapeutic reagent in the prevention and treatment of inflammatory diseases.
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Affiliation(s)
- Hansen Liu
- Key Laboratory of Infection and Immunity of Shandong Province and Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, Shandong, People's Republic of China; and
| | - Zhenzhen Yan
- Key Laboratory of Infection and Immunity of Shandong Province and Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, Shandong, People's Republic of China; and
| | - Yunpeng Zhao
- Department of Orthopedics, Qilu Hospital Cheelow Medical School, Shandong University, Jinan, Shandong, People's Republic of China
| | - Xiaoyuan Ma
- Department of Orthopedics, Qilu Hospital Cheelow Medical School, Shandong University, Jinan, Shandong, People's Republic of China
| | - Honghai Zhang
- Key Laboratory of Infection and Immunity of Shandong Province and Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, Shandong, People's Republic of China; and
| | - Xueer Wang
- Key Laboratory of Infection and Immunity of Shandong Province and Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, Shandong, People's Republic of China; and
| | - Wanxin Zhuang
- Key Laboratory of Infection and Immunity of Shandong Province and Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, Shandong, People's Republic of China; and
| | - Yi Zheng
- Key Laboratory of Infection and Immunity of Shandong Province and Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, Shandong, People's Republic of China; and
| | - Bingyu Liu
- Key Laboratory of Infection and Immunity of Shandong Province and Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, Shandong, People's Republic of China; and
| | - Lei Zhang
- Key Laboratory of Infection and Immunity of Shandong Province and Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, Shandong, People's Republic of China; and
| | - Chengjiang Gao
- Key Laboratory of Infection and Immunity of Shandong Province and Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, Shandong, People's Republic of China; and
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