Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 75
Filtrar
Más filtros

Bases de datos
País/Región como asunto
Tipo del documento
Intervalo de año de publicación
1.
Biomacromolecules ; 2024 Aug 20.
Artículo en Inglés | MEDLINE | ID: mdl-39162323

RESUMEN

Liposomes, made up of phospholipid bilayers, are efficient nanocarriers for drug delivery because they can encapsulate both hydrophilic and lipophilic drugs. Conventional cancer treatments sometimes involve considerable toxicities and adverse drug reactions (ADRs), which limits their clinical value. Despite liposomes' promise in addressing these concerns, clinical trials have revealed significant limitations, including stability, targeted distribution, and scaling challenges. Recent clinical trials have focused on enhancing liposome formulations to increase therapeutic efficacy while minimizing negative effects. Notably, the approval of liposomal medications like Doxil demonstrates their potential in cancer treatment. However, the intricacy of liposome preparation and the requirement for comprehensive regulatory approval remain substantial impediments. Current clinical trial updates show continued efforts to improve liposome stability, targeting mechanisms, and payload capacity in order to address these issues. The future of liposomal drug delivery in cancer therapy depends on addressing these challenges in order to provide patients with more effective and safer treatment alternatives.

2.
AAPS PharmSciTech ; 25(5): 91, 2024 Apr 25.
Artículo en Inglés | MEDLINE | ID: mdl-38664316

RESUMEN

Addressing poor solubility and permeability issues associated with synthetic drugs and naturally occurring active compounds is crucial for improving bioavailability. This review explores the potential of phospholipid complex formulation technology to overcome these challenges. Phospholipids, as endogenous molecules, offer a viable solution, with drugs complexed with phospholipids demonstrating a similar absorption mechanism. The non-toxic and biodegradable nature of the phospholipid complex positions it as an ideal candidate for drug delivery. This article provides a comprehensive exploration of the mechanisms underlying phospholipid complexes. Special emphasis is placed on the solvent evaporation method, with meticulous scrutiny of formulation aspects such as the phospholipid ratio to the drug and solvent. Characterization techniques are employed to understand structural and functional attributes. Highlighting the adaptability of the phospholipid complex, the review discusses the loading of various nanoformulations and emulsion systems. These strategies aim to enhance drug delivery and efficacy in various malignancies, including breast, liver, lung, cervical, and pancreatic cancers. The broader application of the drug phospholipid complex is showcased, emphasizing its adaptability in diverse oncological settings. The review not only explores the mechanisms and formulation aspects of phospholipid complexes but also provides an overview of key clinical studies and patents. These insights contribute to the intellectual and translational advancements in drug phospholipid complexes.


Asunto(s)
Antineoplásicos , Sistemas de Liberación de Medicamentos , Neoplasias , Fosfolípidos , Fosfolípidos/química , Humanos , Sistemas de Liberación de Medicamentos/métodos , Neoplasias/tratamiento farmacológico , Antineoplásicos/administración & dosificación , Antineoplásicos/química , Antineoplásicos/farmacocinética , Solubilidad , Animales , Química Farmacéutica/métodos , Disponibilidad Biológica , Emulsiones/química , Portadores de Fármacos/química , Composición de Medicamentos/métodos
3.
J Mater Sci Mater Med ; 33(3): 28, 2022 Mar 04.
Artículo en Inglés | MEDLINE | ID: mdl-35244808

RESUMEN

Nanosponges are nanosized drug carriers with a three-dimensional structure created by crosslinking polymers. They have the advantage of being able to hold a wide range of drugs of various sizes. Nanosponges come in a variety of shapes and sizes. They are distinguished by the research method used, the type of polymer used, and the type of drug they may contain. Nanosponges are superior to other delivery systems because they can provide a controlled drug release pattern with targeted drug delivery. The period of action, as well as the drug's residence time, may be regulated. Since it is made of biodegradable materials, it has a low toxicity and is safe to use. The efficiency of drug encapsulation is determined by the size of the drug molecule and the amount of void space available. Cancer, enzyme and biocatalyst carrier, oxygen delivery, solubility enhancement, enzyme immobilization, and poison absorbent are some of the applications for nanosponges. The method of preparation, characterization, factors affecting nanosponge development, drug loading and release mechanism, recent developments in this area, and patents filed in the area of nanosponges are all highlighted in this study. Graphical abstract.


Asunto(s)
Ciclodextrinas , Portadores de Fármacos , Ciclodextrinas/química , Portadores de Fármacos/química , Sistemas de Liberación de Medicamentos/métodos , Liberación de Fármacos , Solubilidad
4.
Mol Cell Biochem ; 462(1-2): 133-155, 2019 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-31451998

RESUMEN

Melatonin (N-acetyl-5-methoxy-tryptamine), which is generally considered as pleiotropic and multitasking molecule, secretes from pineal gland at night under normal light or dark conditions. Apart from circadian regulations, Melatonin also has antioxidant, anti-ageing, immunomodulation and anticancer properties. From the epidemiological research, it was postulated that Melatonin has significant apoptotic, angiogenic, oncostatic and anti-proliferative effects on various oncological cells. In this review, the underlying anticancer mechanisms of Melatonin such as stimulation of apoptosis, Melatonin receptors (MT1 and MT2) stimulation, paro-survival signal regulation, the hindering of angiogenesis, epigenetic alteration and metastasis have been discussed with recent findings. The Melatonin utilization as an adjuvant with chemotherapeutic drugs for the reinforcement of therapeutic effects was also discussed. This review precisely emphasizes the anticancer effect of Melatonin on various cancer cells. This review exemplifies the epidemiology and anticancer efficiency of Melatonin with prior attention to the mechanisms of actions.


Asunto(s)
Antineoplásicos/farmacología , Melatonina/farmacología , Animales , Antioxidantes/farmacología , Ensayos Clínicos como Asunto , Humanos , Melatonina/biosíntesis , Melatonina/química
5.
Curr Pharm Biotechnol ; 25(4): 434-447, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-37211845

RESUMEN

Cubosomes are a kind of nanoparticle that is distinct from solid particles in that they are liquid crystalline particles formed by self-assembly of a certain surfactant with a current water ratio. Their unique properties as a result of their microstructure are useful in practical applications. Cubosomes, specifically lyotropic nonlamellar liquid crystalline nanoparticles (LCNs) have gained acceptance as a medication delivery strategy for cancer and other disorders. Cubosomes are produced by the fragmentation of a solid-like phase into smaller particles. Because of its particular microstructure, which is physiologically safe and capable of allowing for the controlled release of solubilized compounds, cubic phase particles are garnering considerable attention. These cubosomes are highly adaptable carriers with promising theranostic efficacy because they can be given orally, topically, or intravenously. Throughout its operation, the drug delivery system regulates the loaded anticancer bioactive's target selectivity and drug release characteristics. This compilation examines recent advances and obstacles in the development and application of cubosomes to treat various cancers, as well as the challenges of turning it into a potential nanotechnological invasion.


Asunto(s)
Sistemas de Liberación de Medicamentos , Nanopartículas , Nanopartículas/química , Preparaciones Farmacéuticas , Tensoactivos , Lípidos/química
6.
Curr Med Chem ; 2024 Aug 01.
Artículo en Inglés | MEDLINE | ID: mdl-39092735

RESUMEN

Polymeric micelles are becoming the method of choice for a nano-drug delivery system, especially in colorectal cancer treatment. These tiny structures have become popular for their amazing qualities that make drug delivery more efficient and therapies better. Colorectal cancer, also known as colon cancer, is one of the most common and deadly cancers in the world. Traditional chemotherapy is good, but it has big downsides, like harming other parts of the body and making people sick all over. Polymeric micelles give a new way to fix these problems by being easier on the body, breaking down naturally, and staying in the blood longer. The polymeric micelles, which are loaded with drugs, are sheltered within the tumor, which leads to a reduction in off-site effects and an increase in the targeting and accumulation of chemotherapeutics at the cancer site. This review paper elaborates on the current status of polymeric micelles as a method for nano-drug delivery for chemotherapy, emphasizing their efficacy in managing cancer. The paper also talks about the various types of copolymers that are used to create polymeric micelles, the different types of micelles, their physicochemical properties, the preparation process, characterization, and their application in cancer diagnostics.

7.
Artículo en Inglés | MEDLINE | ID: mdl-38623975

RESUMEN

Colorectal cancer (CRC) is a significant global health concern. We need ways to detect it early and determine the best treatments. One promising method is liquid biopsy, which uses cancer cells and other components in the blood to help diagnose and treat the disease. Liquid biopsies focus on three key elements: circulating tumor DNA (ctDNA), circulating microRNA (miRNA), and circulating tumor cells (CTC). By analyzing these elements, we can identify CRC in its early stages, predict how well a treatment will work, and even spot signs of cancer returning. This study investigates the world of liquid biopsy, a rapidly growing field. We want to understand how it can help us better recognize the molecular aspects of cancer, improve and diagnostics, tailor treatments to individual patients, and keep track of the disease over the long-term. We explored specific components of liquid biopsy, like extracellular vesicles and cell-free DNA, and how they are used to detect CRC. This review sheds light on the current state of knowledge and the many ways a liquid biopsy can be used in treating colorectal cancer. It can transform patient care, disease management, and clinical outcomes by offering non-invasive cancer-targeting solutions.

8.
Curr Med Chem ; 2024 Apr 03.
Artículo en Inglés | MEDLINE | ID: mdl-38571347

RESUMEN

Cancer is a global health issue that requires modern treatments. Biocompatibility, variable size, and customisable targeting ligands make polymeric nanoparticles (PNPs) a flexible cancer therapy platform. Dynamic nanocarriers, Hyaluronic Acid (HA) coated PNPs, target the overexpressed CD44 receptor in cancer. Through improved permeability and retention, HA, a naturally occurring, biodegradable polymer, increases tumor accumulation and penetration. Hyaluronic acid-grafted polymeric nanoparticles (HA-PNPs) provide a number of advantages over other varieties due to their distinct characteristics. They used CD44 receptor upregulation on cancer cells for selective administration, leveraging the EPR effect for cancer site accumulation. Their natural composition improves biocompatibility while promoting conjugation with a variety of medicinal compounds and providing influence over size and surface features. HA-PNPs facilitate effective cellular uptake, safeguard their cargo, and have the possibility for regulated release, which leads to better delivery of drugs and therapeutic efficacy. While problems, such as CD44 expression variability and drug loading modification, persist, HA-PNPs offer a viable path for targeted and successful treatment of cancer due to their intrinsic benefits. HA-PNPs can be coupled with imaging agents to enable real-time tracking of the delivery of drugs and therapy response, hence enhancing individualized treatment regimens. HA-PNPs can be programmed to respond to particular environmental signals found in the tumor's microenvironment (such as pH, redox potential, and enzymes). This enables for controlled dispensing of therapeutic cargo only when it reaches the target site, reducing systemic exposure and associated negative effects. HA-PNPs have the ability to overcome common MDR processes used by cancer cells, thereby enhancing the efficiency of previously ineffective chemotherapeutic medicines. Recent advances in HA-functionalized PNP fabrication and cancer applications are covered in this article. It discusses complete treatment effectiveness and HA's targeting of tumors and receptors. The study describes production, clinical trials, and problems and prospects in turning HA-coated PNP platforms into viable therapeutic nanomedicines. HA-functionalized PNPs are versatile, targeted nanotherapeutics for various tumor types and disease stages, as shown in this comprehensive study.

9.
Curr Top Med Chem ; 24(8): 686-721, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38409730

RESUMEN

Nanocarriers have emerged as a promising class of nanoscale materials in the fields of drug delivery and biomedical applications. Their unique properties, such as high surface area- tovolume ratios and enhanced permeability and retention effects, enable targeted delivery of therapeutic agents to specific tissues or cells. However, the inherent instability of nanocarriers poses significant challenges to their successful application. This review highlights the importance of nanocarrier stability in biomedical applications and its impact on biocompatibility, targeted drug delivery, long shelf life, drug delivery performance, therapeutic efficacy, reduced side effects, prolonged circulation time, and targeted delivery. Enhancing nanocarrier stability requires careful design, engineering, and optimization of physical and chemical parameters. Various strategies and cutting-edge techniques employed to improve nanocarrier stability are explored, with a focus on their applications in drug delivery. By understanding the advances and challenges in nanocarrier stability, this review aims to contribute to the development and implementation of nanocarrier- based therapies in clinical settings, advancing the field of nanomedicine.


Asunto(s)
Portadores de Fármacos , Sistemas de Liberación de Medicamentos , Nanomedicina , Nanopartículas , Humanos , Portadores de Fármacos/química , Nanopartículas/química , Estabilidad de Medicamentos , Animales
10.
Curr Pharm Des ; 2024 Mar 01.
Artículo en Inglés | MEDLINE | ID: mdl-38441015

RESUMEN

This review investigates the revolutionary application of cell membrane-coated nanoparticles (CMNPs) as a promising avenue for cancer therapy within the embryonic landscape of nanotechnology. Nanoparticles, pivotal in cancer treatment, are systematically examined for their diverse physicochemical structures, categorized as organic (lipid-based, protein-based, and polymer-assisted) and inorganic (carbon-based and metal) varieties. A significant focus is placed on CMNPs, which serve as an innovative drug delivery vehicle, overcoming limitations associated with conventional nanoparticle therapies. This manuscript accurately explores the advantages and challenges of various cell membranes, including those derived from cancer cells, red blood cells, platelets, stem cells, and white blood cells. Importance is placed on their roles in enhancing drug delivery precision, immune system circumvention, and targeted recognition. Detailed insights into the crafting of CMNPs are provided, elucidating membrane extraction and fusion techniques, such as sonication, extrusion, co-extrusion, and microfluidic electroporation. Maintaining membrane integrity during extraction and the benefits of coating techniques in augmenting biocompatibility and targeted drug delivery are underscored. This comprehensive resource consolidates the latest advancements in targeted drug delivery, positioning itself at the forefront of nanotechnology and biomedicine research. Encapsulating various methodologies like membrane extrusion, electrospray, and chemical conjugation, this manuscript showcases the expanding toolbox available to researchers in this dynamic field. Focusing on the unique characteristics of CMNPs, this review explores their multifaceted applications in biomedical research, particularly in tumour therapy. It provides an indepth analysis of the biocompatibility of CMNPs, their stability, immune evasion capabilities, targeted drug delivery precision, increased payload capacity, and retained biological functionality. The manuscript outlines current applications and future prospects of CMNPs in targeted chemotherapy, photothermal and photodynamic therapy, immunotherapy, gene therapy, and innovative therapeutic methods. It concludes by highlighting the advantages of CMNPs in tumour therapy and their transformative potential in reshaping the landscape of cancer treatment.

11.
Eur J Pharm Biopharm ; 200: 114328, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38763329

RESUMEN

Aggressive colon cancer treatment poses significant challenges. This study investigates the potential of innovative carbohydrate-based nanoparticles for targeted Capecitabine (CTB) delivery. CTB nanoparticles were synthesized by conjugating CTB with potato starch and chitosan using ultrasonication, hydrolysis, and ionotropic gelation. Characterization included drug loading, rheology, Surface-Enhanced Raman Spectroscopy (SERS), Fourier-Transform Infrared Spectroscopy (FTIR), Differential Scanning Calorimetry (DSC), X-ray Diffraction (XRD), and Thermogravimetric Analysis (TGA). In vitro and in vivo antitumor activity was evaluated using HT-29 cells and N, N-dimethylhydrazine-induced Balb/c mice, respectively. Cellular assays assessed angiogenesis, migration, proliferation, and apoptosis. Nanoparticles exhibited a mean size of 245 nm, positive zeta potential (+30 mV), high loading efficacy (76 %), and sustained drug release (92 % over 100 h). CTB-loaded nanoparticles displayed superior colon histology, reduced tumour scores, and inhibited VEGD and CD31 expression compared to free CTB. Cellular assays confirmed significant antitumor effects, including reduced tube formation, migration, and proliferation, and increased apoptosis. This study demonstrates the promise of CTB-loaded potato starch-chitosan nanoparticles for aggressive colon cancer treatment. These findings highlight the potential of these nanoparticles for further evaluation in diverse cancer models.


Asunto(s)
Capecitabina , Quitosano , Neoplasias del Colon , Ratones Endogámicos BALB C , Nanopartículas , Solanum tuberosum , Almidón , Animales , Quitosano/química , Neoplasias del Colon/tratamiento farmacológico , Neoplasias del Colon/patología , Almidón/química , Solanum tuberosum/química , Capecitabina/administración & dosificación , Capecitabina/farmacología , Humanos , Ratones , Nanopartículas/química , Células HT29 , Antimetabolitos Antineoplásicos/administración & dosificación , Antimetabolitos Antineoplásicos/farmacología , Antimetabolitos Antineoplásicos/química , Liberación de Fármacos , Portadores de Fármacos/química , Apoptosis/efectos de los fármacos , Sistemas de Liberación de Medicamentos/métodos , Proliferación Celular/efectos de los fármacos , Masculino
12.
Curr Med Chem ; 2024 Jun 24.
Artículo en Inglés | MEDLINE | ID: mdl-38918993

RESUMEN

Theranostics, a method that combines targeted therapy and diagnostic imaging, has emerged as a viable route for enhancing cancer treatment, and hybrid nanoparticles (HNPs) are at the forefront of this field. Metallic, polymeric, lipid-based, and silica- based HNPs are studied for targeting and biocompatibility. Using HNPs, chemotherapeutic drugs, small interfering RNA, and therapeutic genes can be given precisely and controlled. This enhances therapeutic efficacy and reduces adverse effects. With fluorescence dyes, MRI contrast agents, and PET tracers, real-time therapy response monitoring is conceivable. A nano platform with therapeutic and diagnostic capabilities holds great promise for personalized medicine and precision oncology. The present study discusses HNPs' biocompatibility, stability, immunogenicity, and long-term biosafety, which are crucial to the clinical translation of cancer theranostics. Further, in this in- -depth investigation, we investigated the design, synthesis, and multifunctional activities of HNPs for use in cancer theranostics.

13.
Curr Top Med Chem ; 24(3): 201-221, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38141183

RESUMEN

Cordia Dichotoma is a valuable medicinal plant belonging to the family Boraginaceae. It consists of several beneficial secondary metabolite components, including alkaloids, carbohydrates, flavonoids, glycosides, saponins, and tannins. Numerous studies have been conducted to assess the anticancer properties of Cordia Dichotoma on MCF-7, A-549, PC3, and HeLa cancer cell lines, primarily utilizing ethanolic extract, methanolic extract, and chloroform extract. The results of these studies have demonstrated significant effects. Furthermore, several studies have revealed the rich phytoconstituent content of Cordia Dichotoma with some significant components previously utilized by researchers to investigate the anticancer properties of specific compounds. This review discusses several of these components, including ß-sitosterol, α-amyrin, Quercitrin, Robinin, betulin, Taxifolin, and Hesperetin. Additionally, a recent study uncovered that the anticancer effect of metabolites from endophytic fungi residing on the Cordia Dichotoma plant is attributed to a property of the plant itself. This review focuses on the current state of anticancer research related to this plant and its components.


Asunto(s)
Cordia , Humanos , Cordia/química , Antineoplásicos Fitogénicos/farmacología , Antineoplásicos Fitogénicos/química , Antineoplásicos Fitogénicos/aislamiento & purificación , Hongos/efectos de los fármacos , Antineoplásicos/farmacología , Antineoplásicos/química , Antineoplásicos/aislamiento & purificación , Proliferación Celular/efectos de los fármacos , Ensayos de Selección de Medicamentos Antitumorales , Extractos Vegetales/farmacología , Extractos Vegetales/química , Extractos Vegetales/aislamiento & purificación
14.
J Biomed Mater Res A ; 112(11): 1860-1872, 2024 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-38721841

RESUMEN

The worldwide health burden of colorectal cancer is still substantial, and traditional chemotherapeutic drugs sometimes have poor selectivity, which can result in systemic toxicity and unfavorable side effects. For colon-specific medication delivery, bioengineered carbohydrate polymers have shown promise as carriers. They may enhance treatment effectiveness while minimizing systemic exposure and associated side effects. The unique properties of these manufactured or naturally occurring biopolymers, such as hyaluronic acid, chitosan, alginate, and pectin, enable targeted medicine release. These qualities can be changed to meet the physiological needs of the colon. In the context of colorectal cancer therapy, this article provides a comprehensive overview of current developments and prospective future directions in the field of bioengineered carbohydrate polymer synthesis for colon-specific drug delivery. We discuss numerous techniques for achieving colon-targeted drug release, including enzyme-sensitive polymers, pH-responsive devices, and microbiota-activated processes. To increase tumor selectivity and cellular uptake, we also examine the inclusion of active targeting approaches, such as conjugating specific ligands. Furthermore, we discuss the potential of combination treatment strategies, which use the coadministration of numerous therapeutic medications to target multiple pathways implicated in cancer growth and address drug resistance mechanisms. We address recent biomimetic advances that potentially improve the biocompatibility, cellular uptake, and tumor penetration of carbohydrate polymer-based nanocarriers. These methods involve protein corona engineering and cell membrane coating. Furthermore, we look at the possibility of intelligent and sensitive systems that may adjust their behaviors in response to certain inputs or feedback loops, allowing for precise and regulated drug distribution.


Asunto(s)
Carbohidratos , Colon , Humanos , Animales , Colon/metabolismo , Colon/efectos de los fármacos , Carbohidratos/química , Polímeros/química , Liberación de Fármacos , Bioingeniería , Sistemas de Liberación de Medicamentos , Portadores de Fármacos/química , Neoplasias Colorrectales/tratamiento farmacológico
15.
Curr Med Chem ; 31(27): 4320-4339, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38549530

RESUMEN

Nanoparticles have been crucial in redesigning tumour eradication techniques, and recent advances in cancer research have accelerated the creation and integration of multifunctional nanostructures. In the fight against treatment resistance, which has reduced the effectiveness of traditional radiation and chemotherapy, this paradigm change is of utmost importance. Graphene oxide (GO) is one of several nanoparticles made of carbon that has made a splash in the medical field. It offers potential new ways to treat cancer thanks to its nanostructures, which can precisely transfer genetic elements and therapeutic chemicals to tumour areas. Encapsulating genes, protecting them from degradation, and promoting effective genetic uptake by cancer cells are two of GO nanostructures' greatest strengths, in addition to improving drug pharmacokinetics and bioavailability by concentrating therapeutic compounds at particular tumour regions. In addition, photodynamic treatment (PDT) and photothermal therapy (PTT), which use GO nanoparticles to reduce carcinogenesis, have greatly slowed tumour growth due to GO's phototherapy capabilities. In addition to their potential medical uses, GO nanoparticles are attractive vaccine candidates due to their ability to stimulate cellular and innate immunity. These nanoparticles can be used to detect, diagnose, and eradicate cancer because they respond to certain stimuli. The numerous advantages of GO nanoparticles for tumour eradication are attributed in large part to their primary route of internalisation through endocytosis, which guarantees accurate delivery to target locations. The revolutionary potential of multifunctional nanostructures in cancer treatment is highlighted in this extensive compendium that examines current oncological breakthroughs.


Asunto(s)
Grafito , Inmunoterapia , Neoplasias , Fototerapia , Grafito/química , Humanos , Neoplasias/terapia , Neoplasias/tratamiento farmacológico , Fototerapia/métodos , Animales , Nanopartículas/química , Nanoestructuras/química , Vacunas contra el Cáncer/química , Vacunas contra el Cáncer/uso terapéutico , Vacunas contra el Cáncer/inmunología
16.
ACS Pharmacol Transl Sci ; 7(8): 2215-2236, 2024 Aug 09.
Artículo en Inglés | MEDLINE | ID: mdl-39144553

RESUMEN

This Review explores how tumor-associated regulatory cells (Tregs) affect cancer immunotherapy. It shows how Tregs play a role in keeping the immune system in check, how cancers grow, and how well immunotherapy work. Tregs use many ways to suppress the immune system, and these ways are affected by the tumor microenvironment (TME). New approaches to cancer therapy are showing promise, such as targeting Treg checkpoint receptors precisely and using Fc-engineered antibodies. It is important to tailor treatments to each patient's TME in order to provide personalized care. Understanding Treg biology is essential for creating effective cancer treatments and improving the long-term outcomes of immunotherapy.

17.
Nanomedicine (Lond) ; 19(6): 459-481, 2024 03.
Artículo en Inglés | MEDLINE | ID: mdl-38223987

RESUMEN

AIM: Encapsulating epigallocatechin-3-gallate (EGCG) in pH-sensitive polymeric nanoparticles for targeted delivery of drugs could revolutionize colorectal cancer treatment. MATERIALS & METHODS: Nanoparticles were synthesized to release drugs at colon pH. Dynamic light scattering measured their average diameter and ζ-potential, while differential scanning calorimetry and x-ray diffraction assessed EGCG encapsulation. RESULTS: The nanoparticles showed stability and bioavailability in the gastrointestinal tract, efficiently encapsulating and releasing over 93% of EGCG at pH 7.2. They enhanced cytotoxicity against HT-29 cells and demonstrated antibacterial properties, increasing apoptosis and cell cycle arrest. CONCLUSION: The study underscores the potential of nanoparticles in enhancing EGCG delivery for colorectal cancer therapy, aiming to minimize side effects and improve therapeutic outcomes.


Asunto(s)
Apoptosis , Catequina , Neoplasias Colorrectales , Nanopartículas , Catequina/análogos & derivados , Catequina/química , Catequina/farmacología , Catequina/administración & dosificación , Humanos , Neoplasias Colorrectales/tratamiento farmacológico , Neoplasias Colorrectales/patología , Concentración de Iones de Hidrógeno , Nanopartículas/química , Células HT29 , Apoptosis/efectos de los fármacos , Portadores de Fármacos/química , Antibacterianos/química , Antibacterianos/farmacología , Antibacterianos/administración & dosificación , Tamaño de la Partícula , Liberación de Fármacos , Supervivencia Celular/efectos de los fármacos
18.
Curr Med Chem ; 2024 Aug 22.
Artículo en Inglés | MEDLINE | ID: mdl-39177136

RESUMEN

A notable breakthrough in the treatment of colon cancer involves the utilisation of a cutting-edge drug delivery technology known as biosurfactant-derived nanomicelles. These nanomicelles, composed of natural biosurfactant molecules, possess the distinct capability to enclose pharmaceuticals or genetic material, such as DNA, siRNA, or mRNA, within spherical formations. With a size ranging from 10 to 100 nanometers, these nanomicelles exhibit precision targeting capabilities towards colon cancer cells, hence minimising the occurrence of side effects typically associated with treatment. Upon being specifically targeted, the nanomicelles liberate their cargo into cancer cells, resulting in enhanced therapy efficacy. This novel strategy utilises the specific attributes of the tumour microenvironment to administer precise and focused treatment. These nanomicelles improve the absorption by cells and reduce harm to healthy tissues by imitating important nutrients or utilising compounds that specifically target tumours. Furthermore, the incorporation of stimuli-responsive components allows for regulated medication release in reaction to the acidic environment seen in tumours. The review focuses on examining the use of biosurfactants and natural peptides in nanomicellar carriers as ways to fight against colon cancer. Folate-coated nanomicelles incorporating curcumin facilitate precise gene delivery, while the partnership of biosurfactants, such as surfactin from Bacillus subtilis and natural peptides, enables the transportation of particular cyclopeptides into the tumour network. Peptides, similar to bombesin, direct nanomicelles to specific places, while peptides based on curcumin control the release of medicinal substances. While preclinical investigations demonstrate promise, obstacles remain in formulation and regulatory issues. However, biosurfactant-based nanomicelles, particularly folate-coated carriers loaded with curcumin, show tremendous potential in overcoming biological barriers and delivering medicines efficiently to colon cancer cells.

19.
ACS Pharmacol Transl Sci ; 7(4): 967-990, 2024 Apr 12.
Artículo en Inglés | MEDLINE | ID: mdl-38633600

RESUMEN

Precision medicine is transforming colorectal cancer treatment through the integration of advanced technologies and biomarkers, enhancing personalized and effective disease management. Identification of key driver mutations and molecular profiling have deepened our comprehension of the genetic alterations in colorectal cancer, facilitating targeted therapy and immunotherapy selection. Biomarkers such as microsatellite instability (MSI) and DNA mismatch repair deficiency (dMMR) guide treatment decisions, opening avenues for immunotherapy. Emerging technologies such as liquid biopsies, artificial intelligence, and machine learning promise to revolutionize early detection, monitoring, and treatment selection in precision medicine. Despite these advancements, ethical and regulatory challenges, including equitable access and data privacy, emphasize the importance of responsible implementation. The dynamic nature of colorectal cancer, with its tumor heterogeneity and clonal evolution, underscores the necessity for adaptive and personalized treatment strategies. The future of precision medicine in colorectal cancer lies in its potential to enhance patient care, clinical outcomes, and our understanding of this intricate disease, marked by ongoing evolution in the field. The current reviews focus on providing in-depth knowledge on the various and diverse approaches utilized for precision medicine against colorectal cancer, at both molecular and biochemical levels.

20.
Artículo en Inglés | MEDLINE | ID: mdl-38357950

RESUMEN

Ovarian cancer poses a formidable health challenge for women globally, necessitating innovative therapeutic approaches. This review provides a succinct summary of the current research status on lipid-based nanocarriers in the context of ovarian cancer treatment. Lipid-based nanocarriers, including liposomes, solid lipid nanoparticles (SLNs), and nanostructured lipid carriers (NLCs), offer a promising solution for delivering anticancer drugs with enhanced therapeutic effectiveness and reduced adverse effects. Their versatility in transporting both hydrophobic and hydrophilic medications makes them well-suited for a diverse range of anticancer drugs. Active targeting techniques like ligand-conjugation and surface modifications have been used to reduce off-target effects and achieve tumour-specific medication delivery. The study explores formulation techniques and adjustments meant to enhance drug stability and encapsulation in these nanocarriers. Encouraging results from clinical trials and preclinical investigations underscore the promise of lipid-based nanocarriers in ovarian cancer treatment, providing optimism for improved patient outcomes. Notwithstanding these advancements, challenges related to clearance, long-term stability, and scalable manufacturing persist. Successfully translating lipidbased nanocarriers into clinical practice requires addressing these hurdles. To sum up, lipidbased nanocarriers are a viable strategy to improve the effectiveness of therapy for ovarian cancer. With their more focused medication administration and lower systemic toxicity, they may completely change the way ovarian cancer is treated and increase patient survival rates. Lipidbased nanocarriers need to be further researched and developed to become a therapeutically viable treatment for ovarian cancer.

SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA