ArticlePharmaceutics2022
Combinatorial Therapy of Letrozole- and Quercetin-Loaded Spanlastics for Enhanced Cytotoxicity against MCF-7 Breast Cancer Cells.
Article in Pharmaceutics, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
14 citing papers in PubMed, 1 synthesis or guideline pooled it, 47 citations in OpenAlex.
- Pooled it
- Nanovesicular Spanlastics Thermosensitive Gel for the Ocular Delivery of Voriconazole: Development, Ex Vivo Transcorneal Permeability, and In Vivo Evaluation in a Rabbit Model of Fungal Keratitis.AAPS PharmSciTech · 2026Article
- Formulation, Optimization and In vivo Evaluation of Freeze-Dried Nanocapsules for Enhancing the Oral Delivery of Valsartan.AAPS PharmSciTech · 2026Article
- Phytochemical insights into flavonoids in cancer: Mechanisms, therapeutic potential, and the case of quercetin.Heliyon · 2025Review
- Quercetin: A Natural Ally in Combating Breast Cancer.International journal of nanomedicine · 2025Review
- New Insight for Enhanced Topical Targeting of Caffeine for Effective Cellulite Treatment: In Vitro Characterization, Permeation Studies, and Histological Evaluation in Rats.AAPS PharmSciTech · 2024Article
- Surface modified niosomal quercetin with cationic lipid: an appropriate drug delivery system against Pseudomonas aeruginosa Infections.Scientific reports · 2024Article
- Integrating natural compounds and nanoparticle-based drug delivery systems: A novel strategy for enhanced efficacy and selectivity in cancer therapy.Cancer medicine · 2024Review
- Enhancing the anticancer potential of metformin: fabrication of efficient nanospanlastics,International journal of pharmaceutics: X · 2023Article
- A comprehensive review on Ellagic acid in breast cancer treatment: From cellular effects to molecular mechanisms of action.Food science & nutrition · 2023Review
- Synergistic Combination of Letrozole and Berberine in Ascorbic Acid-Stabilized AuNPs: A Promising Solution for Breast Cancer.Pharmaceuticals (Basel, Switzerland) · 2023Article
- Curcumin Transferosome-Loaded Thermosensitive Intranasal in situ Gel as Prospective Antiviral Therapy for SARS-Cov-2.International journal of nanomedicine · 2023Article
- Transethosomal Gel for the Topical Delivery of Celecoxib: Formulation and Estimation of Skin Cancer Progression.Pharmaceutics · 2022Article
- Alkaloid fromFrontiers in pharmacology · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 4 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Breast cancer is the most widespread cancer in women with rising incidence, prevalence, and mortality in developed regions. Most breast cancers (80%) are estrogen receptor-positive, indicating that disease progression could be controlled by estrogen inhibition in the breast tissue. However, drug resistance limits the benefits of this approach. Combinatorial treatment could overcome the resistance and improve the outcome of breast cancer treatment. In the current study, we prepared letrozole-(LTZSPs) and quercetin-loaded spanlastics (QuSPs) using different edge activators-Tween 80, Brij 35, and Cremophor RH40-with different concentrations. The spanlastics were evaluated for their average particles size, surface charge, and percent encapsulation efficiency. The optimized formulations were further examined using transmission electron microscopy, Fourier transform infrared spectroscopy, in vitro drug release and ex vivo skin permeation studies. The prepared spherical LTZSPs and QuSPs had average particle sizes ranged between 129-310 nm and 240-560 nm, respectively, with negative surface charge and high LTZ and Qu encapsulation (94.3-97.2% and 97.9-99.6%, respectively). The in vitro release study of LTZ and Qu from the selected formulations showed a sustained drug release for 24 h with reasonable flux and permeation through the rat skin. Further, we evaluated the in vitro cytotoxicity, cell cycle analysis, and intracellular reactive oxygen species (ROS) of the combination therapy of letrozole and quercetin either in soluble form or loaded in spanlastics against MCF-7 breast cancer cells. The LTZSPs and QuSPs combination was superior to the individual treatments and the soluble free drugs in terms of in vitro cytotoxicity, cell cycle analysis, and ROS studies. These results confirm the potential of LTZSPs and QuSPs combination for transdermal delivery of drugs for enhanced breast cancer management.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.