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Targeting Metal Ion Homeostasis for Regulated Cell Death-Amplified Tumor Nanomedicine.

Amidst escalating global health challenges, neoplastic diseases remain a predominant cause of morbidity and mortality, exerting complex and far-reaching effects on human health and societal well-being. The advent of precision medicine has ushered in an era of tailored therapeutic strategies, leveraging individual genetic profiles, tumor microenvironmental features, and exogenous factors to redefine oncology care. Central to these advances is the understanding of cell death, a fundamental biological process encompassing both programmed and non-programmed forms. Programmed cell death is orchestr

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… Under light exposure, TBP-2 quickly enters the cell membrane and generates hydroxyl radicals, depleting glutathione and inhibiting copper efflux. … Mn 2+ catalyzes the formation of huge amounts of hydroxyl radicals via Fenton-like processes, which damage essential biomolecules such as lipids that make up membranes, proteins, and DNA. …

A Review of Recent Curcumin Analogues and Their Antioxidant, Anti-Inflammatory, and Anticancer Activities.

Curcumin, as the main active component of turmeric (Curcuma longa), has been demonstrated with various bioactivities. However, its potential therapeutic applications are hindered by challenges such as poor solubility and bioavailability, rapid metabolism, and pan-assay interference properties. Recent advancements have aimed to overcome these limitations by developing novel curcumin analogues and modifications. This brief review critically assesses recent studies on synthesising different curcumin analogues, including metal complexes, nano particulates, and other curcumin derivatives, focused o

Role of phytoconstituents in the management of COVID-19.

BackgroundCOVID-19, a severe global pandemic caused by severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) has emerged as one of the most threatening transmissible disease. As a great threat to global public health, the development of treatment options has become vital, and a rush to find a cure has mobilized researchers globally from all areas.Scope and approachThis review focuses on deciphering the potential of different secondary metabolites from medicinal plants as therapeutic options either as inhibitors of therapeutic targets of SARS-CoV-2 or as blockers of viral particles entry

Anticancer Molecular Mechanisms of Curcuminoids: An Updated Review of Clinical Trials.

Curcuminoids are bioactive polyphenols, mainly extracted from Curcuma longa (turmeric), and have received much attention due to their pleiotropic anticancer properties. Recent evidence suggests that curcumin and analogs prevent the activation of a variety of signaling pathways, including the MAPK, PI3K/Akt, and NF-kB pathways, resulting in the induction of apoptosis, prevention of proliferation, and suppression. In addition to these processes, curcumin has been shown to enhance the efficacy of the conventional anti-cancer modalities such as radiation and chemotherapy. By suppressing the expres

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… Curcumin is involved in direct free radical scavenging activity of several free radicals, including superoxide anions, hydroxyl radicals, and peroxyl radicals. Both the phenolic and diketone groups of curcumin, containing an electron‐rich nature, retain these reactive species. …

Cancer treatment-related cardiotoxicity, molecular mechanism, challenges, and research trends.

Cancer treatment-related cardiotoxicity (CTRC) encompasses a spectrum of cardiovascular complications associated with chemotherapy, targeted therapy, and radiotherapy. This review synthesizes recent mechanistic insights to delineate distinct pathological pathways: anthracyclines provoke oxidative mitochondrial damage and disrupt cardiomyocyte iron homeostasis; HER2-targeted therapies inhibit the PI3K-Akt survival pathway, compromising contractile function and calcium regulation; tyrosine kinase inhibitors impair VEGF and PDGF signaling, inducing endothelial dysfunction and microvascular rarefa

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… This cyclic electron transfer promotes the excessive generation of ROS, including superoxide anions, hydrogen peroxide, and hydroxyl radicals [ 38 ]. … Formation of superoxide anion, hydrogen peroxide, and hydroxyl radical. J Biol Chem. 1986;261(7):3068–74. PubMed PMID: 3005279. 39. Schieber M, Chandel NS. ROS function in redox signaling and oxidative stress. Curr Biol. 2014;24(10):R453–62. 10.1016/j.cub.2014.03 .034. …

Mechanisms and Applications of Manganese-Based Nanomaterials in Tumor Diagnosis and Therapy.

Tumors are the second most common cause of mortality globally, ranking just below heart disease. With continuous advances in diagnostic technology and treatment approaches, the survival rates of some cancers have increased. Nevertheless, due to the complexity of the mechanisms underlying tumors, cancer remains a serious public health issue that threatens the health of the population globally. Manganese (Mn) is an essential trace element for the human body. Its regulatory role in tumor biology has received much attention in recent years. Developments in nanotechnology have led to the emergence

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… In the presence of HCO 3 − in the physiological environment, Mn ions perform a Fenton-like reaction with H 2 O 2 to produce extremely reactive hydroxyl radicals (·OH). … Mn 2+ can enhance ROS production by catalyzing a Fenton-like reaction, where it reacts with hydrogen peroxide to generate harmful hydroxyl radicals (·OH), thus amplifying ferroptosis in tumor cells [ 44 ]. …

Витамины D и нейродегенеративные заболевания, такие, как множественный склероз (MS), болезнь Паркинсона (PD), болезнь Альцгеймера (AD) и амиотропический боковой склероз (ALS): Обзор текущей литературы.

ЦЕЛЬ ОБЗОРА: В настоящем обзоре изучается роль витамина D3 и его производных в качестве ингибиторов патологических метаболических изменений в нейродегенеративных заболеваниях. В рукописи изучается, как витамин D3 влияет на регулирование нейронного кальция, антиоксидативные пути, иммуномодуляцию и нейрозащиту во время детоксификации, выходящие за пределы его известных функций кишечника, кости и почечной кальция и фосфора, а также минерализацию кости. Последние исследования показали синтез активного метаболита 1,25(OH)2D3 (витамин D) в глиальных клетках через процесс гидроксиляции CY-P24A1, ферм

Карвацоль Ойл как нейропоохранный агент: обзор дизайна исследований и последних достижений.

Нейродегенеративные заболевания в основном воспринимаются как болезни стареющего населения, однако сегодня в день эти заболевания представляют угрозу для населения всех возрастных групп, несмотря на значительное улучшение качества жизни. Согласно сообщениям, почти все основные масла (ЭО) обладают определенными нейрозащитными способностями и на протяжении столетий использовались в качестве добавок к хорошему психическому здоровью. Этот обзор свидетельствует о терапевтическом потенциале одного такого монотерпенового фенола, карвакрула (CV), который может быть использован в качестве основного тер

Prodrugs in Oncology: Bioactivation and Impact on Therapeutic Efficacy and Toxicity.

A prodrug is a molecule that lacks pharmacological activity, but upon enzymatic bioactivation, it can generate a therapeutically active molecule. The primary reason behind the design of a prodrug is to help circumvent challenges associated with the physicochemical properties of a drug molecule, such as solubility, absorption, distribution, and instability. Chemotherapy has been at the forefront of cancer treatment for over 70 years due to its ability to target rapidly proliferating tumor cells. However, a major concern with conventional chemotherapy is the lack of selectivity and its associate

Marine Natural Products as Potent Anticancer Agents (2020-2024): Structural Diversity, SARs and Target Prediction.

In recent years, Marine Natural Products (MNPs) have emerged as a significant source for anticancer drug discovery, as many natural products can offer structural diversity, unique mechanisms of action, and relatively low toxicity. This article provides a systematic review of MNPs with reported anticancer activities from 2020 to 2024. These compounds are classified into seven major categories: terpenoids, alkaloids, sterols, polyketides, peptides and proteins, polysaccharides, and macrolides. For each category, we elaborate on the marine sources, structural identification, in vitro anticancer a

Ксантин Оксидореводаза: Меч с двойным отростком в неврологических заболеваниях.

Неинфекционные неврологические расстройства являются второй основной причиной смерти, и их бремя продолжает расти по мере роста и старения населения мира. Окисляющий стресс и воспаление во многом связаны с активацией и развитием множественных склерозов, болезни Альцгеймера, амиотропического бокового склероза, болезни Хантингтона, болезни Паркинсона и даже инсульта. В ходе этого обзора мы изучаем роль деятельности и продуктов " xanthine oxidoreducase " (XOR) во всех вышеупомянутых неврологических заболеваниях. Редоксальный дисбаланс, вызывающий окислительный стресс, может возникнуть и

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… Both the XO and NADH oxidase activities of XOR produce ROS, hydrogen peroxide, and superoxide anion, which can give rise to the highly cytotoxic hydroxyl radical in the presence of transition metals. …

The role of hypoxic microenvironment in autoimmune diseases.

The hypoxic microenvironment, characterized by significantly reduced oxygen levels within tissues, has emerged as a critical factor in the pathogenesis and progression of various autoimmune diseases (AIDs). Central to this process is the hypoxia-inducible factor-1 (HIF-1), which orchestrates a wide array of cellular responses under low oxygen conditions. This review delves into the multifaceted roles of the hypoxic microenvironment in modulating immune cell function, particularly highlighting its impact on immune activation, metabolic reprogramming, and angiogenesis. Specific focus is given to

Green Tea Catechins for Prostate Cancer Prevention: Present Achievements and Future Challenges.

Green tea catechins (GTCs) are a family of chemically related compounds usually classified as antioxidant molecules. Epidemiological evidences, supported by interventional studies, highlighted a more than promising role for GTCs in human prostate cancer (PCa) chemoprevention. In the last decades, many efforts have been made to gain new insights into the mechanism of action of GTCs. Now it is clear that GTCs' anticancer action can no longer be simplistically limited to their direct antioxidant/pro-oxidant properties. Recent contributions to the advancement of knowledge in this field have shown

Ferroptosis: Frenemy of Radiotherapy.

Recently, it was established that ferroptosis, a type of iron-dependent regulated cell death, plays a prominent role in radiotherapy-triggered cell death. Accordingly, ferroptosis inducers attracted a lot of interest as potential radio-synergizing drugs, ultimately enhancing radioresponses and patient outcomes. Nevertheless, the tumor microenvironment seems to have a major impact on ferroptosis induction. The influence of hypoxic conditions is an area of interest, as it remains the principal hurdle in the field of radiotherapy. In this review, we focus on the implications of hypoxic conditions

Железо и нейродегенерация в множестве склерозов

Увеличение осаждения железа может быть связано с множественным склерозом (МС). Недавнее развитие МРТ позволило количественно определить уровни мозгового железа, что повысило интерес к изучению роли железа в MS. Данные об аномальном гомеостазе железа в MS также получены в результате анализа белков железа и железа в CSF, а также крови и послесмертных сеток мозга MS. Однако пока не ясно, связано ли накопление железа с патологией MS или просто отражает эпифеноменон. Дополнительный интерес вызвала идея хронической цереброспиновой недостаточности, которая может быть связана с накоплением мозгового ж

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… The resulting highly reactive free hydroxyl radicals (OH • ) interact with molecules leading to the production of other free radicals [ 63 ]. …

Prevention of Anthracycline-Induced Cardiotoxicity: The Good and Bad of Current and Alternative Therapies.

Doxorubicin (Dox)-induced cardiotoxicity (DIC) remains a serious health burden, especially in developing countries. Unfortunately, the high cost of current preventative strategies has marginalized numerous cancer patients because of socio-economic factors. In addition, the efficacy of these strategies, without reducing the chemotherapeutic properties of Dox, is frequently questioned. These limitations have widened the gap and necessity for alternative medicines, like flavonoids, to be investigated. However, new therapeutics may also present their own shortcomings, ruling out the idea of "natur

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… Similarly, the production of Dox-semiquinones, via NADPH CYP enzymes, triggers oxidative stress-induced damage by generating superoxide's ( O 2 - ), hydroxyl radicals (•OH) and peroxides (H 2 O 2 ), which causes further DNA damage ( 16 ) thereby, accelerating cancer apoptosis and aiding in combatting … The formation of these metabolites is associated with DNA damage, via topoisomerase II inhibition, and the production of hydroxyl radicals (•OH), superoxide anions ( O 2 - ) and peroxides (H 2 O 2 ). This results in the activation of tumoricidal pathways which drive cancer cell death. …

Ферроптоз в множестве миеломы: молекулярные механизмы и терапевтические возможности.

Множественная миелома (ММ) — гематологическая порча, вызванная распространением клональных плазменных клеток, и остается в значительной степени неизлечимой из-за рецидива заболеваний и приобретенной лекарственной устойчивости. Ферроптоз, основанная на железной зависимости форма регулируемой клеточной смертности, характеризующейся чрезмерным липидным пероксидацией, стала потенциальной терапевтической целью в раке и все чаще причастна к биологии MM. В отличие от апоптоза и других классических путей смерти клеток, ферроптоз тесно связан с дисрегулируемым метаболизмом железа, окислительным стрессо

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… Labile ferrous iron (Fe² + ) catalyzes the Fenton reaction, generating highly reactive hydroxyl radicals from hydrogen peroxide and thereby promoting membrane lipid peroxidation ( 33 , 34 ). … Excess ferrous iron subsequently drives Fenton reactions, generating hydroxyl radicals that initiate membrane lipid peroxidation. Although moderate levels of reactive oxygen species (ROS) support MM-cell proliferation, excessive iron-dependent oxidative stress can trigger ferroptosis. …

Cold Atmospheric Pressure Plasma (CAP) as a New Tool for the Management of Vulva Cancer and Vulvar Premalignant Lesions in Gynaecological Oncology.

Vulvar cancer (VC) is a specific form of malignancy accounting for 5-6% of all gynaecologic malignancies. Although VC occurs most commonly in women after 60 years of age, disease incidence has risen progressively in premenopausal women in recent decades. VC demonstrates particular features requiring well-adapted therapeutic approaches to avoid potential treatment-related complications. Significant improvements in disease-free survival and overall survival rates for patients diagnosed with post-stage I disease have been achieved by implementing a combination therapy consisting of radical surgic

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… Plasma-derived reactive species are free radicals, including oxygen forms (ozone O 3 , superoxide anion O 2 − ), hydroxyl radical (OH), hydrogen peroxide (H 2 O 2 ), nitrogen dioxide radical (NO 2 ), nitric oxide (NO), peroxynitrite (ONOO − ), organic radicals, electrons, energetic ions, and charged … CAP is a source of highly reactive species (ROS, RNS, atomic oxygen, hydroxyl radical, superoxide, nitrogen oxides, and singlet delta oxygen), neutral particles (photons and neutrons), electrons, and physical factors (electromagnetic field and UV radiation) [ 199 ]. …

Advances in delivery methods of Arthrospira platensis (spirulina) for enhanced therapeutic outcomes.

Arthrospira platensis (A. platensis) aqueous extract has massive amounts of natural products that can be used as future drugs, such as C-phycocyanin, allophycocyanin, etc. This extract was chosen because of its high adaptability, which reflects its resolute genetic composition. The proactive roles of cyanobacteria, particularly in the medical field, have been discussed in this review, including the history, previous food and drug administration (FDA) reports, health benefits and the various dose-dependent therapeutic functions that A. platensis possesses, including its role in fighting against

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… In addition, A. platensis is rich in phenolic acid, which exerts anti-oxidant activity by haunting hydroxyl radical and many other organic radicals that act as chain-breaking anti-oxidants, superoxide radical anion, and reducing agents. …

Effect of N-Acetylcysteine on Cisplatin Toxicity: A Review of the Literature.

N-acetylcysteine (NAC) is a membrane-permeable cysteine precursor capable of enhancing the intracellular cysteine pool, enhancing cellular glutathione (GSH) synthesis, and thus potentiating the endogenous antioxidant mechanism. Late administration of NAC after cisplatin has been shown in different in vivo studies to reduce the side effects caused by various toxicities at different levels without affecting the antitumor efficacy of platinum, improving total and enzymatic antioxidant capacity and decreasing oxidative stress markers. These characteristics provide NAC with a rationale as a potenti