Formulation and evaluation of trametinib loaded novel nano elastic carriers for treatment of melanoma

Article InformationFor the treatment of resistant cancers characterized by BRAF-V600E gene mutations, such as melanoma and advanced lung adenocarcinoma, the FDA has granted a license for trasmetinib (TM), a targeted therapeutic.Inhibiting mitogen-activated extracellular signal-regulatory kinase (ERK) is key to its efficacy.However, commercial TM is poorly soluble, cannot target certain biological targets, and most worrisomely, it is easy to induce tumor cells to develop resistance to many medications, therefore, it has limited practical medical applications.We formulated TM-BLs, which are bilosomes that contain TM, and evaluated their entrapment efficiency, zeta-potential, and vesicle size.The formulations including cholesterol, sodium deoxycholate (SDC), and Tween 80 were used for thin film hydration.The formulations coated with the high concentrations of the mucoadhesive polymer chitosan (0.5 and 1% w/v) performed the best.Surface morphological, anti-oxidant, and antibacterial tests were conducted on the bilosomes coated with chitosan (TM-CBLs).For BS3, the synthesized TM-BLs had a nanometric size of 185.34 5.28 nm, whereas for BS5, it was 295.31 6.31 nm.In addition, their electrical conductivity increased, from 56.49 0.16 to 80.27 0.64%, and they possessed a negative zeta potential of -10.74 1.06 and -21.54 1.42 mV.Their polydispersibility index was also less than 0.5.These findings led to the subsequent coating of the selected formulation (BS2) with chitosan.The end outcome was an increase in vesicle size (268.49 2.31nm), a positive zeta potential (17.36 0.52 mV), and an enhancement in drug release (69.37 1.34%).Because, chitosan is a polymer that adhears to mucous membranes, TM-CBLs formulation showed significantly better permeability and mucoadhesion (p < 0.05) than the formulation BS2.When chitosan is bound to BL surfaces, it opens previously impermeable tight membrane junctions, allowing for increased permeability.The vesicles were clear and unaggregated, as confirmed by scanning electron microscopy results.TM-BLs and TM-CBLs showed significantly higher antioxidant activity compared to pure TM.Bile salt and chitosan coating improved solubility and enhanced radical scavenging effects.The zones of inhibition for antibacterial and anti-oxidant activities demonstrated better outcomes.This study suggests that TM-BLs can impede the success of traditional distribution techniques.