Genoprotective role of pembrolizumab liposome in isolated lymphocytes from head and neck squamous cell carcinoma patients compared to those from healthy individuals in vitro.

Pembrolizumab has shown significant anticancer effects against various human cancers. The present study investigated the effects of pembrolizumab liposome and nano (naked) forms in treated lymphocytes from head and neck squamous cell carcinoma (HNSCC) patients compared to healthy individuals. The level of oxidative DNA damage induced by hydrogen peroxide (H2O2) was also investigated. A concentration of 10 µg/ml of pembrolizumab liposome was used to treat the lymphocytes in the Comet and micronucleus assays based on the preliminary dosage optimization tests. To determine the cellular pathways involved in the protective role of pembrolizumab against H2O2, several proteins involved in apoptosis (P53, P21 and Bcl-2) were assessed. Pembrolizumab significantly reduced DNA damage and decreased the number of micronuclei in lymphocytes from HNSCC patients (p < 0.01) compared with healthy individuals. The 10 µg/ml of pembrolizumab liposome significantly reduced the oxidative stress induced by H2O2 and was effective in healthy and HNSCC groups using the Comet and micronucleus assays (p < 0.001). To our knowledge, this is the first report of pembrolizumab in liposome and naked forms exhibiting a protective effect on DNA damage in the treatment of HNSCC patients.

Meta-analysis of nano-phytosomes: unleashing the potential of plant-derived compounds for advancing cancer therapy.

Nano-phytosomes are considered as an efficient drug delivery system for phytochemicals. Phytosomes enhance stability and significantly improves phytochemicals bioavailability and therapeutic efficacy. Thorough meta-analysis of 93 articles, phytochemical versus phytosomes size, charge, polydispersity index (PDI) and IC50 values were investigated. Multivariate Analysis of Covariance revealed significant phytochemicals type effects, even when accounting for cancer cell type and phospholipid type as covariates. Least Significant Difference (LSD) post hoc tests described unique attributes among various phytosomes. Flavonoid-based phytosomes exhibited larger particle sizes than others. In contrast, terpenoid-based phytosomes displayed significantly lower charges. Flavonoids demonstrated higher poly dispersity index (PDI) values than alkaloids and polyphenols. Alkaloids exhibited more extensive PDI values, while polyphenols had lower PDI values than terpenoids. Furthermore, flavonoid-containing nanoparticles exhibited higher IC50 values than terpenoids. In conclusion, nano-phytosomes offer promising prospects for revolutionising drug delivery methodologies and advancing the development of innovative therapeutic solutions in the domain of cancer therapy.