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1.
Exp Oncol ; 46(1): 3-12, 2024 May 31.
Article En | MEDLINE | ID: mdl-38852058

Oncolytic peptides are derived from natural host defense peptides/antimicrobial peptides produced in a wide variety of life forms. Over the past two decades, they have attracted much attention in both basic research and clinical applications. Oncolytic peptides were expected to act primarily on tumor cells and also trigger the immunogenic cell death. Their ability in the tumor microenvironment remodeling and potentiating the anticancer immunity has long been ignored. Despite the promising results, clinical application of oncolytic peptides is still hindered by their unsatisfactory bioactivity and toxicity to normal cells. To ensure safer therapy, various approaches are being developed. The idea of the Ukrainian research group was to equip peptide molecules with a "molecular photoswitch" - a diarylethene fragment capable of photoisomerization, allowing for the localized photoactivation of peptides within tumors reducing side effects. Such oncolytic peptides that may induce the membrane lysis-mediated cancer cell death and subsequent anticancer immune responses in combination with the low toxicity to normal cells have provided a new paradigm for cancer therapy. This review gives an overview of the broad effects and perspectives of oncolytic peptides in anticancer immunity highlighting the potential issues related to the use of oncolytic peptides in cancer immunotherapy. We summarize the current status of research on peptide-based tumor immunotherapy in combination with other therapies including immune checkpoint inhibitors, chemotherapy, and targeted therapy.


Neoplasms , Humans , Neoplasms/therapy , Neoplasms/immunology , Animals , Immunotherapy/methods , Peptides/therapeutic use , Peptides/immunology , Peptides/chemistry , Antineoplastic Agents/therapeutic use , Antineoplastic Agents/pharmacology , Oncolytic Virotherapy/methods , Tumor Microenvironment/immunology
2.
Brief Bioinform ; 25(4)2024 May 23.
Article En | MEDLINE | ID: mdl-38856172

With their diverse biological activities, peptides are promising candidates for therapeutic applications, showing antimicrobial, antitumour and hormonal signalling capabilities. Despite their advantages, therapeutic peptides face challenges such as short half-life, limited oral bioavailability and susceptibility to plasma degradation. The rise of computational tools and artificial intelligence (AI) in peptide research has spurred the development of advanced methodologies and databases that are pivotal in the exploration of these complex macromolecules. This perspective delves into integrating AI in peptide development, encompassing classifier methods, predictive systems and the avant-garde design facilitated by deep-generative models like generative adversarial networks and variational autoencoders. There are still challenges, such as the need for processing optimization and careful validation of predictive models. This work outlines traditional strategies for machine learning model construction and training techniques and proposes a comprehensive AI-assisted peptide design and validation pipeline. The evolving landscape of peptide design using AI is emphasized, showcasing the practicality of these methods in expediting the development and discovery of novel peptides within the context of peptide-based drug discovery.


Artificial Intelligence , Drug Discovery , Peptides , Peptides/chemistry , Peptides/therapeutic use , Peptides/pharmacology , Drug Discovery/methods , Humans , Drug Design , Machine Learning , Computational Biology/methods
3.
Nutrients ; 16(11)2024 Jun 04.
Article En | MEDLINE | ID: mdl-38892690

Dietary interventions represent an interesting alternative to pharmacological treatments for improving the quality of life (QoL) of subjects suffering from gastroesophageal reflux disease (GERD). This randomized, double-blind, placebo-controlled study aimed to evaluate the efficacy of a food supplement (FS) containing a probiotic strain, bioactive peptides, and vitamins in relieving heartburn/dyspeptic symptoms in subjects with mild-to-moderate GERD. Fifty-six adult participants were randomly assigned to receive the placebo or the active FS for 28 days. Subjects were asked to record daily the frequency and intensity of heartburn episodes and the intake of over- the-counter (OTC) medications. GERD-QoL and self-assessment questionnaires were also completed every two weeks and at the end of the treatment, respectively. FS was effective in achieving a progressive and significant reduction of heartburn frequency and severity, with an intergroup significant difference at the end of the treatment period. FS group also reported a reduction in the OTC medication intake, whereas placebo administration did not modify the OTC intake. Results from the QoL and self-assessment questionnaires showed that FS administration achieved a progressive and statistically significant intragroup and intergroup improvement in the QoL score and a higher positive response with respect to the placebo treatment.


Dietary Supplements , Gastroesophageal Reflux , Lactobacillus acidophilus , Peptides , Probiotics , Quality of Life , Vitamins , Humans , Gastroesophageal Reflux/drug therapy , Male , Double-Blind Method , Female , Adult , Probiotics/administration & dosage , Probiotics/therapeutic use , Middle Aged , Vitamins/administration & dosage , Treatment Outcome , Peptides/administration & dosage , Peptides/therapeutic use , Heartburn/drug therapy , Surveys and Questionnaires , Severity of Illness Index
4.
Int J Mol Sci ; 25(11)2024 May 30.
Article En | MEDLINE | ID: mdl-38892229

Synthetic deer antler peptides (TSKYR, TSK, and YR) stimulate the proliferation of human chondrocytes and osteoblasts and increase the chondrocyte content of collagen and glycosamino-glycan in vitro. This study investigated the peptide mixture's pain relief and chondroprotective effect in a rat model of collagenase-induced osteoarthritis. Thirty-six adult male Sprague-Dawley rats were divided into three groups: control (saline), positive control (hyaluronic acid), and ex-perimental (peptides). Intra-articular collagenase injections were administered on days 1 and 4 to induce osteoarthritis in the left knees of the rats. Two injections of saline, hyaluronic acid, or the peptides were injected into the same knees of each corresponding group at the beginning of week one and two, respectively. Joint swelling, arthritic pain, and histopathological changes were evaluated. Injection of the peptides significantly reduced arthritic pain compared to the control group, as evidenced by the closer-to-normal weight-bearing and paw withdrawal threshold test results. Histological analyses showed reduced cartilage matrix loss and improved total cartilage degeneration score in the experimental versus the control group. Our findings suggest that intra-articular injection of synthetic deer antler peptides is a promising treatment for osteoarthritis.


Antlers , Deer , Disease Models, Animal , Osteoarthritis, Knee , Peptides , Rats, Sprague-Dawley , Animals , Injections, Intra-Articular , Antlers/chemistry , Osteoarthritis, Knee/drug therapy , Osteoarthritis, Knee/pathology , Osteoarthritis, Knee/chemically induced , Male , Rats , Peptides/administration & dosage , Peptides/pharmacology , Peptides/therapeutic use , Hyaluronic Acid/administration & dosage , Cartilage, Articular/drug effects , Cartilage, Articular/pathology , Cartilage, Articular/metabolism , Collagenases
5.
Diabetes ; 73(7): 1027-1031, 2024 Jul 01.
Article En | MEDLINE | ID: mdl-38900951

The glucagon-like peptide-1 receptor (GLP-1R) is a class B G protein-coupled receptor involved in the regulation of blood glucose levels and food intake. Stabilized agonists targeting GLP-1R are used in the treatment of type 2 diabetes and have recently become a breakthrough obesity therapy. Here, we revisit a classic article in Diabetes by Thorens et al. that described the cloning, sequencing, and functional expression of the human GLP-1R. The article also demonstrated that exendin4(1-39) was a full agonist of the human GLP-1R whereas exendin4(9-39) was a full antagonist. We discuss how the knowledge imparted by these studies has gone on to inform multiple strands of GLP-1R biology over the past three decades, including pharmacology, signaling, human genetics, structural biology, and chemical biology.


Diabetes Mellitus, Type 2 , Glucagon-Like Peptide-1 Receptor , Humans , Glucagon-Like Peptide-1 Receptor/agonists , Glucagon-Like Peptide-1 Receptor/metabolism , Glucagon-Like Peptide-1 Receptor/genetics , Diabetes Mellitus, Type 2/metabolism , Diabetes Mellitus, Type 2/drug therapy , Diabetes Mellitus, Type 2/genetics , Exenatide/therapeutic use , Exenatide/pharmacology , Hypoglycemic Agents/therapeutic use , Hypoglycemic Agents/pharmacology , Animals , Peptides/therapeutic use
6.
BMC Med ; 22(1): 259, 2024 Jun 21.
Article En | MEDLINE | ID: mdl-38902652

BACKGROUND: IMCY-0098, a synthetic peptide developed to halt disease progression via elimination of key immune cells in the autoimmune cascade, has shown a promising safety profile for the treatment of type 1 diabetes (T1D) in a recent phase 1b trial. This exploratory analysis of data from that trial aimed to identify the patient biomarkers at baseline associated with a positive response to treatment and examined the associations between immune response parameters and clinical efficacy endpoints (as surrogates for mechanism of action endpoints) using an artificial intelligence-based approach of unsupervised explainable machine learning. METHODS: We conducted an exploratory analysis of data from a phase 1b, dose-escalation, randomized, placebo-controlled study of IMCY-0098 in patients with recent-onset T1D. Here, a panel of markers of T cell activation, memory T cells, and effector T cell response were analyzed via descriptive statistics. Artificial intelligence-based analyses of associations between all variables, including immune responses and clinical responses, were performed using the Knowledge Extraction and Management (KEM®) v 3.6.2 analytical platform. RESULTS: The relationship between all available patient data was investigated using unsupervised machine learning implemented in the KEM® environment. Of 15 associations found for the dose C group (450 µg subcutaneously followed by 3 × 225 µg subcutaneously), seven involved human leukocyte antigen (HLA) type, all of which identified improvement/absence of worsening of disease parameters in DR4+ patients and worsening/absence of improvement in DR4- patients. This association with DR4+ and non-DR3 was confirmed using the endpoints normalized area under the curve C-peptide from mixed meal tolerance tests where presence of DR4 HLA haplotype was associated with an improvement in both endpoints. Exploratory immune analysis showed that IMCY-0098 dose B (150 µg subcutaneously followed by 3 × 75 µg subcutaneously) and dose C led to an increase in presumed/potentially protective antigen-specific cytolytic CD4+ T cells and a decrease in pathogenic CD8+ T cells, consistent with the expected mechanism of action of IMCY-0098. The analysis identified significant associations between immune and clinical responses to IMCY-0098. CONCLUSIONS: Promising preliminary efficacy results support the design of a phase 2 study of IMCY-0098 in patients with recent-onset T1D. TRIAL REGISTRATION: ClinicalTrials.gov NCT03272269; EudraCT: 2016-003514-27.


Biomarkers , Diabetes Mellitus, Type 1 , Humans , Diabetes Mellitus, Type 1/drug therapy , Diabetes Mellitus, Type 1/immunology , Double-Blind Method , Male , Female , Adult , Immunotherapy/methods , Young Adult , Adolescent , Treatment Outcome , Peptides/administration & dosage , Peptides/therapeutic use , Middle Aged
7.
Neurosurg Rev ; 47(1): 232, 2024 May 24.
Article En | MEDLINE | ID: mdl-38787469

Parkinson's disease (PD) presents as a complex neurodegenerative disorder characterized by motor and non-motor symptoms, resulting from dopaminergic neuron degeneration. Current treatment strategies primarily aim to alleviate symptoms through pharmacotherapy and supportive therapies. However, emerging research explores novel therapeutic avenues, including the repurposing of drugs like lixisenatide, a GLP-1 receptor agonist initially developed for type 2 diabetes. This correspondence summarizes a phase 2 clinical trial investigating lixisenatide's efficacy in early PD, demonstrating a potential for mitigating motor disability progression. Findings reveal a marginal improvement or stabilization in motor function among lixisenatide-treated individuals compared to placebo, emphasizing its therapeutic promise. Nonetheless, the emergence of gastrointestinal adverse events underscores the need for careful monitoring and management. Further extensive trials are warranted to delineate lixisenatide's efficacy and safety profile, fostering collaborative efforts towards precision treatments in PD.


Parkinson Disease , Peptides , Humans , Parkinson Disease/drug therapy , Peptides/therapeutic use , Treatment Outcome , Antiparkinson Agents/therapeutic use , Glucagon-Like Peptide-2 Receptor
9.
Brief Bioinform ; 25(3)2024 Mar 27.
Article En | MEDLINE | ID: mdl-38725157

Cancer, recognized as a primary cause of death worldwide, has profound health implications and incurs a substantial social burden. Numerous efforts have been made to develop cancer treatments, among which anticancer peptides (ACPs) are garnering recognition for their potential applications. While ACP screening is time-consuming and costly, in silico prediction tools provide a way to overcome these challenges. Herein, we present a deep learning model designed to screen ACPs using peptide sequences only. A contrastive learning technique was applied to enhance model performance, yielding better results than a model trained solely on binary classification loss. Furthermore, two independent encoders were employed as a replacement for data augmentation, a technique commonly used in contrastive learning. Our model achieved superior performance on five of six benchmark datasets against previous state-of-the-art models. As prediction tools advance, the potential in peptide-based cancer therapeutics increases, promising a brighter future for oncology research and patient care.


Antineoplastic Agents , Deep Learning , Peptides , Peptides/chemistry , Peptides/therapeutic use , Humans , Antineoplastic Agents/therapeutic use , Antineoplastic Agents/chemistry , Neoplasms/drug therapy , Computational Biology/methods , Machine Learning , Algorithms
10.
Medicina (Kaunas) ; 60(5)2024 May 15.
Article En | MEDLINE | ID: mdl-38792994

Background and Objectives: Secondary hyperparathyroidism (SHPT) poses a common condition among patients with chronic kidney disease (CKD) due to the chronic stimulation of the parathyroid glands as a result of persistently low calcium levels. As a first option for medical treatment, vitamin D receptor analogs (VDRAs) and calcimimetic agents are generally used. Apart from cinacalcet, which is orally taken, in recent years, another calcimimetic agent, etelcalcetide, is being administered intravenously during dialysis. Materials and Methods: In a 5-year retrospective study between 2018 and 2023, 52 patients undergoing dialysis were studied. The aim of this study is to highlight the possible effects and/or benefits that intravenously administered calcimimetic agents have on CKD patients. A total of 34 patients (65.4%) received cinacalcet and etelcalcetide while parathormone (PTH) and calcium serum levels were monitored on a monthly basis. Results: A total of 29 out of 33 patients (87.9%) that received treatment with etelcalcetide showed a significant decrease in PTH levels, which rose up to 57% compared to the initial values. None of the included patients needed to undergo parathyroidectomy (PTx) due to either extremely high and persistent PTH levels or severe side effects of the medications. It is generally strongly advised that parathyroidectomies should be performed by an expert surgical team. In recent years, a significant decrease in parathyroidectomies has been recorded globally, a fact that is mainly linked to the constantly wider use of new calcimimetic agents. This decrease in parathyroidectomies has resulted in an important decrease in complications occurring in cervical surgeries (e.g., perioperative hemorrhage and nerve damage). Conslusions: Despite the fact that these surgical complications cannot be easily compared to the pharmaceutical side effects, the recorded decrease in parathyroidectomies is considered to be notable, especially in cases of relapse where a difficult reoperation would be considered based on previously published guidelines.


Calcimimetic Agents , Cinacalcet , Hyperparathyroidism, Secondary , Humans , Hyperparathyroidism, Secondary/drug therapy , Hyperparathyroidism, Secondary/surgery , Hyperparathyroidism, Secondary/etiology , Retrospective Studies , Male , Female , Middle Aged , Cinacalcet/therapeutic use , Aged , Calcimimetic Agents/therapeutic use , Calcimimetic Agents/administration & dosage , Parathyroidectomy , Renal Dialysis , Peptides/therapeutic use , Parathyroid Hormone/blood , Renal Insufficiency, Chronic/complications , Calcium/blood , Calcium/therapeutic use , Adult
11.
Sci Data ; 11(1): 541, 2024 May 25.
Article En | MEDLINE | ID: mdl-38796630

With the discovery of the therapeutic activity of peptides, they have emerged as a promising class of anti-cancer agents due to their specific targeting, low toxicity, and potential for high selectivity. In particular, as peptide-drug conjugates enter clinical, the coupling of targeted peptides with traditional chemotherapy drugs or cytotoxic agents will become a new direction in cancer treatment. To facilitate the drug development of cancer therapy peptides, we have constructed DCTPep, a novel, open, and comprehensive database for cancer therapy peptides. In addition to traditional anticancer peptides (ACPs), the peptide library also includes peptides related to cancer therapy. These data were collected manually from published research articles, patents, and other protein or peptide databases. Data on drug library include clinically investigated and/or approved peptide drugs related to cancer therapy, which mainly come from the portal websites of drug regulatory authorities and organisations in different countries and regions. DCTPep has a total of 6214 entries, we believe that DCTPep will contribute to the design and screening of future cancer therapy peptides.


Antineoplastic Agents , Neoplasms , Peptides , Peptides/therapeutic use , Antineoplastic Agents/therapeutic use , Antineoplastic Agents/adverse effects , Neoplasms/drug therapy , Humans , Peptide Library , Databases, Protein
12.
Int J Mol Sci ; 25(9)2024 Apr 30.
Article En | MEDLINE | ID: mdl-38732142

The high mortality rate among patients with acute myocardial infarction (AMI) is one of the main problems of modern cardiology. It is quite obvious that there is an urgent need to create more effective drugs for the treatment of AMI than those currently used in the clinic. Such drugs could be enzyme-resistant peptide analogs of glucagon-like peptide-1 (GLP-1). GLP-1 receptor (GLP1R) agonists can prevent ischemia/reperfusion (I/R) cardiac injury. In addition, chronic administration of GLP1R agonists can alleviate the development of adverse cardiac remodeling in myocardial infarction, hypertension, and diabetes mellitus. GLP1R agonists can protect the heart against oxidative stress and reduce proinflammatory cytokine (IL-1ß, TNF-α, IL-6, and MCP-1) expression in the myocardium. GLP1R stimulation inhibits apoptosis, necroptosis, pyroptosis, and ferroptosis of cardiomyocytes. The activation of the GLP1R augments autophagy and mitophagy in the myocardium. GLP1R agonists downregulate reactive species generation through the activation of Epac and the GLP1R/PI3K/Akt/survivin pathway. The GLP1R, kinases (PKCε, PKA, Akt, AMPK, PI3K, ERK1/2, mTOR, GSK-3ß, PKG, MEK1/2, and MKK3), enzymes (HO-1 and eNOS), transcription factors (STAT3, CREB, Nrf2, and FoxO3), KATP channel opening, and MPT pore closing are involved in the cardioprotective effect of GLP1R agonists.


Cardiotonic Agents , Glucagon-Like Peptide-1 Receptor , Signal Transduction , Humans , Glucagon-Like Peptide-1 Receptor/agonists , Glucagon-Like Peptide-1 Receptor/metabolism , Cardiotonic Agents/pharmacology , Cardiotonic Agents/therapeutic use , Signal Transduction/drug effects , Animals , Peptides/pharmacology , Peptides/therapeutic use , Myocardial Reperfusion Injury/metabolism , Myocardial Reperfusion Injury/drug therapy , Myocardial Reperfusion Injury/prevention & control , Myocardial Reperfusion Injury/pathology , Myocardial Infarction/metabolism , Myocardial Infarction/drug therapy , Myocytes, Cardiac/metabolism , Myocytes, Cardiac/drug effects , Glucagon-Like Peptide-1 Receptor Agonists
13.
BMC Oral Health ; 24(1): 525, 2024 May 03.
Article En | MEDLINE | ID: mdl-38702623

OBJECTIVE: To evaluate the antibacterial effectiveness of a combination of ε-poly-L-lysine (ε-PL), funme peptide (FP) as well as domiphen against oral pathogens, and assess the efficacy of a BOP® mouthwash supplemented with this combination in reducing halitosis and supragingival plaque in a clinical trial. MATERIALS AND METHODS: The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of the compound against Fusobacterium nucleatum, Porphyromonas gingivalis, Streptococcus mutans, and Aggregatibacter actinomycetemcomitans were determined by the gradient dilution method. Subsequently, the CCK-8 assay was used to detect the toxicity of mouthwash on human gingival fibroblastst, and the effectiveness in reducing halitosis and supragingival plaque of the mouthwash supplemented with the combination was analyzed by a randomized, double-blind, parallel-controlled clinical trial. RESULTS: The combination exhibited significant inhibitory effects on tested oral pathogens with the MIC < 1.56% (v/v) and the MBC < 3.13% (v/v), and the mouthwash containing this combination did not inhibit the viability of human gingival fibroblasts at the test concentrations. The clinical trial showed that the test group displayed notably lower volatile sulfur compounds (VSCs) at 0, 10, 24 h, and 7 d post-mouthwash (P < 0.05), compared with the baseline. After 7 days, the VSC levels of the and control groups were reduced by 50.27% and 32.12%, respectively, and notably cutting severe halitosis by 57.03% in the test group. Additionally, the Plaque Index (PLI) of the test and control group decreased by 54.55% and 8.38%, respectively, and there was a significant difference in PLI between the two groups after 7 days (P < 0.01). CONCLUSIONS: The combination of ε-PL, FP and domiphen demonstrated potent inhibitory and bactericidal effects against the tested oral pathogens, and the newly formulated mouthwash added with the combination exhibited anti-dental plaque and anti-halitosis properties in a clinical trial and was safe. TRIAL REGISTRATION: The randomized controlled clinical trial was registered on Chinese Clinical Trial Registry (No. ChiCTR2300073816, Date: 21/07/2023).


Dental Plaque , Halitosis , Mouthwashes , Polylysine , Humans , Halitosis/prevention & control , Halitosis/drug therapy , Halitosis/microbiology , Mouthwashes/therapeutic use , Dental Plaque/microbiology , Dental Plaque/prevention & control , Double-Blind Method , Male , Female , Polylysine/therapeutic use , Adult , Microbial Sensitivity Tests , Young Adult , Anti-Bacterial Agents/therapeutic use , Anti-Bacterial Agents/pharmacology , Porphyromonas gingivalis/drug effects , Fusobacterium nucleatum/drug effects , Fibroblasts/drug effects , Peptides/therapeutic use , Peptides/pharmacology , Aggregatibacter actinomycetemcomitans/drug effects , Streptococcus mutans/drug effects
14.
Food Funct ; 15(11): 5714-5736, 2024 Jun 04.
Article En | MEDLINE | ID: mdl-38752330

Hyperuricemia, a disorder of uric acid metabolism, serves as a significant risk factor for conditions such as hypertension, diabetes mellitus, renal failure, and various metabolic syndromes. The main contributors to hyperuricemia include overproduction of uric acid in the liver or impaired excretion in the kidneys. Despite traditional clinical drugs being employed for its treatment, significant health concerns persist. Recently, there has been growing interest in utilizing protein peptides sourced from diverse food origins to mitigate hyperuricemia. This article provides a comprehensive review of bioactive peptides with anti-hyperuricemia properties derived from animals, plants, and their products. We specifically outline the methods for preparing these peptides from food proteins and elucidate their efficacy and mechanisms in combating hyperuricemia, supported by in vitro and in vivo evidence. Uric acid-lowering peptides offer promising prospects due to their safer profile, enhanced efficacy, and improved bioavailability. Therefore, this review underscores significant advancements and contributions in identifying peptides capable of metabolizing purine and/or uric acid, thereby alleviating hyperuricemia. Moreover, it offers a theoretical foundation for the development of functional foods incorporating uric acid-lowering peptides.


Hyperuricemia , Peptides , Uric Acid , Hyperuricemia/drug therapy , Humans , Peptides/pharmacology , Peptides/therapeutic use , Animals , Uric Acid/metabolism
15.
Amino Acids ; 56(1): 37, 2024 May 31.
Article En | MEDLINE | ID: mdl-38822212

Many drug formulations containing small active molecules are used for the treatment of coronary artery disease, which affects a significant part of the world's population. However, the inadequate profile of these molecules in terms of therapeutic efficacy has led to the therapeutic use of protein and peptide-based biomolecules with superior properties, such as target-specific affinity and low immunogenicity, in critical diseases. Protein‒protein interactions, as a consequence of advances in molecular techniques with strategies involving the combined use of in silico methods, have enabled the design of therapeutic peptides to reach an advanced dimension. In particular, with the advantages provided by protein/peptide structural modeling, molecular docking for the study of their interactions, molecular dynamics simulations for their interactions under physiological conditions and machine learning techniques that can work in combination with all these, significant progress has been made in approaches to developing therapeutic peptides that can modulate the development and progression of coronary artery diseases. In this scope, this review discusses in silico methods for the development of peptide therapeutics for the treatment of coronary artery disease and strategies for identifying the molecular mechanisms that can be modulated by these designs and provides a comprehensive perspective for future studies.


Coronary Artery Disease , Peptides , Humans , Coronary Artery Disease/drug therapy , Coronary Artery Disease/metabolism , Peptides/chemistry , Peptides/therapeutic use , Molecular Docking Simulation , Computer Simulation , Molecular Dynamics Simulation , Machine Learning
16.
Food Res Int ; 187: 114427, 2024 Jul.
Article En | MEDLINE | ID: mdl-38763677

The scourge of obesity arising from obesogens and poor dieting still ravages our planet as half of the global population may be overweight and obese by 2035. This metabolic disorder is intertwined with type 2 diabetes (T2D), both of which warrant alternative therapeutic options other than clinically approved drugs like orlistat with their tendency of abuse and side effects. In this review, we comprehensively describe the global obesity problem and its connection to T2D. Obesity, overconsumption of fats, the mechanism of fat digestion, obesogenic gut microbiota, inhibition of fat digestion, and natural anti-obesity compounds are discussed. Similar discussions are made for diabetes with regard to glucose regulation, the diabetic gut microbiota, and insulinotropic compounds. The sources and production of anti-obesity bioactive peptides (AOBPs) and anti-diabetic bioactive peptides (ADBPs) are also described while explaining their structure-function relationships, gastrointestinal behaviors, and action mechanisms. Finally, the techno-functional applications of AOBPs and ADBPs are highlighted.


Anti-Obesity Agents , Diabetes Mellitus, Type 2 , Gastrointestinal Microbiome , Hypoglycemic Agents , Obesity , Peptides , Humans , Obesity/drug therapy , Peptides/pharmacology , Peptides/therapeutic use , Anti-Obesity Agents/pharmacology , Hypoglycemic Agents/therapeutic use , Hypoglycemic Agents/pharmacology , Diabetes Mellitus, Type 2/drug therapy , Gastrointestinal Microbiome/drug effects , Animals
17.
Int J Biol Macromol ; 270(Pt 2): 132254, 2024 Jun.
Article En | MEDLINE | ID: mdl-38729501

Therapeutic proteins have been employed for centuries and reached approximately 50 % of all drugs investigated. By 2023, they represented one of the top 10 largest-selling pharma products ($387.03 billion) and are anticipated to reach around $653.35 billion by 2030. Growth hormones, insulin, and interferon (IFN α, γ, and ß) are among the leading applied therapeutic proteins with a higher market share. Protein-based therapies have opened new opportunities to control various diseases, including metabolic disorders, tumors, and viral outbreaks. Advanced recombinant DNA biotechnology has offered the production of therapeutic proteins and peptides for vaccination, drugs, and diagnostic tools. Prokaryotic and eukaryotic expression host systems, including bacterial, fungal, animal, mammalian, and plant cells usually applied for recombinant therapeutic proteins large-scale production. However, several limitations face therapeutic protein production and applications at the commercial level, including immunogenicity, integrity concerns, protein stability, and protein degradation under different circumstances. In this regard, protein-engineering strategies such as PEGylation, glycol-engineering, Fc-fusion, albumin conjugation, and fusion, assist in increasing targeting, product purity, production yield, functionality, and the half-life of therapeutic protein circulation. Therefore, a comprehensive insight into therapeutic protein research and findings pave the way for their successful implementation, which will be discussed in the current review.


Peptides , Humans , Peptides/chemistry , Peptides/therapeutic use , Animals , Virus Diseases/drug therapy , Virus Diseases/prevention & control , Recombinant Proteins/therapeutic use , Protein Engineering/methods , Antiviral Agents/therapeutic use , Viruses
18.
Biomed Pharmacother ; 175: 116709, 2024 Jun.
Article En | MEDLINE | ID: mdl-38713945

Peptide medications have been more well-known in recent years due to their many benefits, including low side effects, high biological activity, specificity, effectiveness, and so on. Over 100 peptide medications have been introduced to the market to treat a variety of illnesses. Most of these peptide medications are developed on the basis of endogenous peptides or natural peptides, which frequently required expensive, time-consuming, and extensive tests to confirm. As artificial intelligence advances quickly, it is now possible to build machine learning or deep learning models that screen a large number of candidate sequences for therapeutic peptides. Therapeutic peptides, such as those with antibacterial or anticancer properties, have been developed by the application of artificial intelligence algorithms.The process of finding and developing peptide drugs is outlined in this review, along with a few related cases that were helped by AI and conventional methods. These resources will open up new avenues for peptide drug development and discovery, helping to meet the pressing needs of clinical patients for disease treatment. Although peptide drugs are a new class of biopharmaceuticals that distinguish them from chemical and small molecule drugs, their clinical purpose and value cannot be ignored. However, the traditional peptide drug research and development has a long development cycle and high investment, and the creation of peptide medications will be substantially hastened by the AI-assisted (AI+) mode, offering a new boost for combating diseases.


Algorithms , Artificial Intelligence , Drug Development , Peptides , Humans , Peptides/therapeutic use , Peptides/pharmacology , Drug Development/methods , Animals , Drug Discovery/methods , Drug Discovery/trends , Machine Learning
19.
EMBO Mol Med ; 16(6): 1284-1309, 2024 Jun.
Article En | MEDLINE | ID: mdl-38783166

Hypoxic-ischaemic encephalopathy (HIE) arises from diminished blood flow and oxygen to the neonatal brain during labor, leading to infant mortality or severe brain damage, with a global incidence of 1.5 per 1000 live births. Glucagon-like Peptide 1 Receptor (GLP1-R) agonists, used in type 2 diabetes treatment, exhibit neuroprotective effects in various brain injury models, including HIE. In this study, we observed enhanced neurological outcomes in post-natal day 10 mice with surgically induced hypoxic-ischaemic (HI) brain injury after immediate systemic administration of exendin-4 or semaglutide. Short- and long-term assessments revealed improved neuropathology, survival rates, and locomotor function. We explored the mechanisms by which GLP1-R agonists trigger neuroprotection and reduce inflammation following oxygen-glucose deprivation and HI in neonatal mice, highlighting the upregulation of the PI3/AKT signalling pathway and increased cAMP levels. These findings shed light on the neuroprotective and anti-inflammatory effects of GLP1-R agonists in HIE, potentially extending to other neurological conditions, supporting their potential clinical use in treating infants with HIE.


Animals, Newborn , Disease Models, Animal , Hypoxia-Ischemia, Brain , Neuroprotective Agents , Animals , Hypoxia-Ischemia, Brain/drug therapy , Hypoxia-Ischemia, Brain/metabolism , Neuroprotective Agents/pharmacology , Neuroprotective Agents/therapeutic use , Mice , Signal Transduction/drug effects , Exenatide/pharmacology , Exenatide/therapeutic use , Hypoglycemic Agents/pharmacology , Glucagon-Like Peptide-1 Receptor/metabolism , Glucagon-Like Peptide-1 Receptor/agonists , Peptides/pharmacology , Peptides/therapeutic use
20.
EBioMedicine ; 104: 105162, 2024 Jun.
Article En | MEDLINE | ID: mdl-38810561

BACKGROUND: Finding the oncogene, which was able to inhibit tumor cells intrinsically and improve the immune answers, will be the future direction for renal cancer combined treatment. Following patient sample analysis and signaling pathway examination, we propose p21-activated kinase 4 (PAK4) as a potential target drug for kidney cancer. PAK4 exhibits high expression levels in patient samples and plays a regulatory role in the immune microenvironment. METHODS: Utilizing AI software for peptide drug design, we have engineered a specialized peptide proteolysis targeting chimera (PROTAC) drug with selectivity for PAK4. To address challenges related to drug delivery, we developed a nano-selenium delivery system for efficient transport of the peptide PROTAC drug, termed PpD (PAK4 peptide degrader). FINDINGS: We successfully designed a peptide PROTAC drug targeting PAK4. PpD effectively degraded PAK4 with high selectivity, avoiding interference with other homologous proteins. PpD significantly attenuated renal carcinoma proliferation in vitro and in vivo. Notably, PpD demonstrated a significant inhibitory effect on tumor proliferation in a fully immunocompetent mouse model, concomitantly enhancing the immune cell response. Moreover, PpD demonstrated promising tumor growth inhibitory effects in mini-PDX and PDO models, further underscoring its potential for clinical application. INTERPRETATION: This PAK4-targeting peptide PROTAC drug not only curtails renal cancer cell proliferation but also improves the immune microenvironment and enhances immune response. Our study paves the way for innovative targeted therapies in the management of renal cancer. FUNDING: This work is supported by Research grants from non-profit organizations, as stated in the Acknowledgments.


Cell Proliferation , Kidney Neoplasms , Proteolysis , p21-Activated Kinases , p21-Activated Kinases/antagonists & inhibitors , p21-Activated Kinases/metabolism , Humans , Animals , Mice , Cell Proliferation/drug effects , Kidney Neoplasms/drug therapy , Kidney Neoplasms/metabolism , Cell Line, Tumor , Proteolysis/drug effects , Carcinoma, Renal Cell/drug therapy , Carcinoma, Renal Cell/metabolism , Xenograft Model Antitumor Assays , Disease Models, Animal , Antineoplastic Agents/pharmacology , Antineoplastic Agents/therapeutic use , Peptides/pharmacology , Peptides/chemistry , Peptides/therapeutic use , Tumor Microenvironment/drug effects
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