Cyclotides. Prospects for using violet oxytocin-like substances to create a new generation of pharmacological agents DOI
С. Н. Прошин, Vladimir V. Grishin,

Alina Ashotovna Dedyan

и другие.

Reviews on Clinical Pharmacology and Drug Therapy, Год журнала: 2024, Номер 22(3), С. 237 - 255

Опубликована: Ноя. 13, 2024

This review article focuses on the use of violets and their derivatives as medicinal agents. Special attention is given to historical aspects using healing properties violets, well analysis substances derived from these plants for pharmaceutical production. The specifically discusses oxytocin-like found in particularly cyclotides. Cyclotides are globular microproteins with a unique head-to-tail cyclized backbone stabilized by three disulfide bonds forming cystine knot. chemical characteristics cyclotides make them suitable recombinant scaffolds design development ligands G protein-coupled receptors, which part modern generation drugs. bradykinin κ-opioid demand pharmacology, described detail.

Язык: Английский

The Role of Peptides in Combatting HIV Infection: Applications and Insights DOI Creative Commons

Naiera M. Helmy,

Keykavous Parang

Molecules, Год журнала: 2024, Номер 29(20), С. 4951 - 4951

Опубликована: Окт. 19, 2024

Peptide-based inhibitors represent a promising approach for the treatment of HIV-1, offering range potential advantages, including specificity, low toxicity, and ability to target various stages viral lifecycle. This review outlines current state research on peptide-based anti-HIV therapies, highlighting key advancements identifying future directions. Over past few years, there has been significant progress in developing synthetic drugs that life cycle, entry replication. These approaches aim create effective therapies. Additionally, peptides have proven valuable development vaccines. In quest HIV vaccines, discovering potent antigens designing suitable vaccine strategies are crucial overcoming challenges such as immunogenicity, safety concerns, increased load. Innovative through peptide are, therefore, focus area achieving prevention. aims explore with activity highlight their role advancing both therapeutic preventive measures against HIV.

Язык: Английский

Процитировано

3

Plant Antimicrobial Peptides and Their Main Families and Roles: A Review of the Literature DOI Creative Commons
Samuel Salomão Silva de Oliveira, Milena Bellei Cherene, Gabriel Bonan Taveira

и другие.

Current Issues in Molecular Biology, Год журнала: 2024, Номер 47(1), С. 1 - 1

Опубликована: Дек. 24, 2024

Antimicrobial peptides (AMPs) are constituent molecules of the innate defense system and naturally produced by all organisms. AMPs characterized a relatively low molecular weight (less than 10 kDa) variable number cysteine residues that form disulfide bonds contribute to stabilization tertiary structure. In addition, there is wide repertoire antimicrobial agents against bacteria, viruses, fungi, protozoa can provide large prototype for study biochemical manipulation. this sense, plant stand out because they have range biological functions microorganisms potential applications in medicine agriculture. Herein, we describe mini-review principal AMP families, such as defensins, lipid transfer proteins (LTPs), thionins, heveins, cyclotides. The objective work was present main discoveries regarding activities these especially last 20 years. We also discuss current knowledge their activities, gene expression, possible uses biotechnology.

Язык: Английский

Процитировано

3

Small and Versatile Cyclotides as Anti-infective Agents DOI Creative Commons
Elizabete de Souza Cândido,

Liryel Silva Gasparetto,

Lívia V. Luchi

и другие.

ACS Infectious Diseases, Год журнала: 2025, Номер unknown

Опубликована: Янв. 22, 2025

Plants provide an abundant source of potential therapeutic agents, including a diverse array compounds, such as cyclotides, which are peptides known for their antimicrobial activity. Cyclotides multifaceted molecules with wide range biological activities. Their unique topology forms head-to-tail cyclic structure reinforced by cysteine knot, confers chemical and thermal stability. These can directly target membranes infectious agents binding to phosphatidylethanolamine in lipid membranes, leading membrane permeabilization. Additionally, they function carriers cell-penetrating molecules, demonstrating antiviral, antibacterial, antifungal, nematicidal properties. The cyclotides is also amenable synthesis, facilitating drug design through residue substitutions or grafting bioactive epitopes within the cyclotide scaffold enhance peptide In this review, we explore multifunctionality these biomolecules anti-infective emphasizing novel class drugs.

Язык: Английский

Процитировано

0

Advances in the Role of Antimicrobial Peptides in the Management of Sexually Transmitted Infections DOI Creative Commons

Shuangwen Xiao,

Wei Zuo, Qing Xiang

и другие.

Journal of Clinical Laboratory Analysis, Год журнала: 2025, Номер unknown

Опубликована: Май 14, 2025

ABSTRACT Background Sexually transmitted infections (STIs) are a major threat to global health, and the emergence of antibiotic‐resistant strains has made therapeutic strategies more complex. Antimicrobial peptides (AMPs) ubiquitous class natural compounds that expected be an alternative conventional antibiotics due their broad spectrum activity lower propensity for resistance, promising alternatives antibiotics. Objective To emphasize importance antimicrobial in fight against STIs review recent advances AMPs treatment prevention STIs. Methods This article focuses on reviewing progress research prognosis such as gonorrhea, HIV, HPV, chlamydia, discusses challenges future directions field. Results have great potential However, face enzymatic degradation, safety high cost, while nanotechnology peptide modification enhance stability bioavailability AMPs. Conclusion become important tool with further technological innovation.

Язык: Английский

Процитировано

0

Discovery and development of macrocyclic peptide modulators of the cannabinoid 2 receptor DOI Creative Commons
Nataša Tomašević,

Fabiola Susanna Emser,

Jasmin Gattringer

и другие.

Опубликована: Фев. 14, 2024

The cannabinoid type 2 receptor (CB2R), a G protein-coupled (GPCR), is an important regulator of immune cell function and promising target for to treat chronic inflammation fibrosis. While CB2R typically targeted by small organic molecules, including endo-, phyto- synthetic cannabinoids, peptides may offer different interaction space, owing their larger size greater contact area they facilitate differential interactions with specific target. Here we explore plant-derived cyclic cystine-knot as ligands the CB2R. Cyclotides are known exceptional biochemical stability. Recently gained attention modulators GPCR signaling templates designing peptide improved pharmacokinetic properties over linear peptides. Cyclotide-based were profiled based on peptide-enriched extract library comprising nine plant species. Employing pharmacology-guided fractionation peptidomics identified cyclotide vodo-C1 from sweet violet (Viola odorata) full agonist affinity (Ki) 1 µM potency (EC50) 8 µM. Leveraging deep learning networks verified structural topology modelled its molecular volume in comparison ligand binding pocket. In fragment-based approach designed characterized vodo-C1-based bicyclic (vBCL1-4), aiming reduce improve potency. Opposite vodo-C1, vBCL lacked ability activate receptor, but acted negative allosteric or neutral antagonists This study introduces new macrocyclic phytocannabinoid, which served template development modulators. These findings opportunities future peptide-based probe drug at receptors.

Язык: Английский

Процитировано

2

Effect of Viola tricolor flower supplementation on body and intestinal microbiota in rats fed a high-fat diet DOI Creative Commons
M. V. Bilan, M. A. Lieshchova, A. А. Bohomaz

и другие.

Regulatory Mechanisms in Biosystems, Год журнала: 2024, Номер 15(3), С. 626 - 634

Опубликована: Авг. 19, 2024

The use of herbal medicines, due to their wide therapeutic spectrum and absence or minimal side effects, is an important area therapy that used in the treatment diseases various etiologies. Garden violet /wild pansy (Viola tricolor L.) a medicinal plant family widely distributed Ukraine. herb this (Violae herba) as official raw material, which sold dry form independent remedy part teas. In study, we determined overall effect V. high-fat diet on body weight gain, metabolic processes model animals, intestinal microbiota. For experiment, 15 male white laboratory rats were divided into three groups fed (15% vegetable fat) supplemented with 0.5% 2.0% dried for 30 days. Consumption resulted increased gain compared control group. at dose caused increase relative brain large intestine (caecum colon) decrease thymus. At 2.0%, thymus caecum increased, but colon decreased, length rectum decreased globulin concentration changes protein ratio, – total protein, albumin, albumin/globulin ratio level. addition high-density lipoprotein (HDL) cholesterol 2.0%. Regardless dose, contributed reduction plasma atherogenic index. Both doses sharp significant De Ritis alkaline phosphatase activity. Adding helps maintain quantitative composition main microbiota (Bifidobacterium, Lactobacillus typical Escherichia coli). It was found 2% had bacteriostatic low-fermenting coli Klebsiella spp. bactericidal Enterococcus spp., can disrupt normal functions cause diseases.

Язык: Английский

Процитировано

2

Cyclotide nanotubes as a novel potential Drug-Delivery System: Characterization and biocompatibility DOI
Ladan Dayani, Mehdi Aliomrani, Hossein Hashempour

и другие.

International Journal of Pharmaceutics, Год журнала: 2023, Номер 642, С. 123104 - 123104

Опубликована: Июнь 3, 2023

Язык: Английский

Процитировано

5

Exploring Immune Modulatory Effects of Cyclotide-Enriched Viola tricolor Preparations DOI Creative Commons
Bernhard Retzl,

Amy Marisa Zimmermann-Klemd,

Carsten Gründemann

и другие.

Planta Medica, Год журнала: 2023, Номер 89(15), С. 1493 - 1504

Опубликована: Сен. 25, 2023

Viola tricolor is a medicinal plant with documented application as an anti-inflammatory herb. The standard of care for the treatment inflammatory bowel disease immunosuppressive therapeutics or biologics, which often have undesired effects. We explored V. herbal preparations that are rich in emerging class phytochemicals drug-like properties, so-called cyclotides. As alternative to existing medications, cyclotides immunomodulatory and their intrinsic stability allows gastrointestinal tract, instance, via oral administration. optimized isolation procedure improve yield compared cellular effects violet-derived organic solvent-extracts, aqueous preparations, isolated cyclotide from this on primary human T lymphocytes macrophages, i.e., cells crucial initiation progression disease. hot water decoctions stronger activity towards proliferation, interferon-γ, interleukin-21 secretion than DCM/MeOH cyclotide-enriched extract, kalata S appears one active components responsible observed This effect was increased by longer boiling duration. In contrast, extract more effective reducing levels cytokines interleukin-6, interleukin-12, interleukin-23, tumor necrosis factor-α, C - X-C motif chemokine ligand 10, secreted monocyte-derived macrophages. Defined promising pharmacological modulating immune cell responses at cytokine levels. important understanding role cyclotide-containing drug future applications disorders, such

Язык: Английский

Процитировано

5

Discovery and development of macrocyclic peptide modulators of the cannabinoid 2 receptor DOI Creative Commons
Nataša Tomašević,

Fabiola Susanna Emser,

Edin Muratspahić

и другие.

Journal of Biological Chemistry, Год журнала: 2024, Номер 300(6), С. 107330 - 107330

Опубликована: Апрель 26, 2024

The cannabinoid-type 2 receptor (CB2R), a G protein-coupled (GPCR), is an important regulator of immune cell function and promising target to treat chronic inflammation fibrosis. While CB2R typically targeted by small molecules, including endo-, phyto- synthetic cannabinoids, peptides – owing their size may offer different interaction space facilitate differential interactions with the receptor. Here we explore plant-derived cyclic cystine-knot as ligands CB2R. Cyclotides are known for exceptional biochemical stability. Recently they gained attention GPCR modulators templates designing peptide improved pharmacokinetic properties over linear peptides. Cyclotide-based were profiled based on peptide-enriched extract library comprising nine plants. Employing pharmacology-guided fractionation peptidomics identified cyclotide vodo-C1 from sweet violet (Viola odorata) full agonist affinity (Ki) 1μM potency (EC50) 8μM. Leveraging deep learning networks verified structural topology modelled its molecular volume in comparison ligand binding pocket. In fragment-based approach designed characterized vodo-C1-based bicyclic (vBCL1-4), aiming reduce improve potency. Opposite vodo-C1, vBCL lacked ability activate but acted negative allosteric or neutral antagonists This study introduces macrocyclic phytocannabinoid, which served template development modulators. These findings opportunities future peptide-based probe drug at cannabinoid receptors.

Язык: Английский

Процитировано

1

Gene-guided identifications of a structure-chimeric cyclotide viphi I from Viola philippica: potential functions against cadmium and nematodes DOI
Xiaojie Zhang, Ruohong Chen, Haoyue Shu

и другие.

Plant Science, Год журнала: 2024, Номер 347, С. 112185 - 112185

Опубликована: Июль 8, 2024

Язык: Английский

Процитировано

1