Solid lipid nanoparticle

About: Solid lipid nanoparticle is a research topic. Over the lifetime, 3175 publications have been published within this topic receiving 127912 citations. The topic is also known as: LNP & SLN.

Microparticles containing erlotinib-loaded solid lipid nanoparticles for treatment of non-small cell lung cancer

Abstract: Non-small cell lung cancer (NSCLC) patients with sensitizing mutations in the exons 18–21 of the epithelial growth factor receptor (EGFR) gene show increased kinase activity of EGFR. Hence, tyrosine kinase inhibitors (TKIs) such as erlotinib (ETB) have commonly been used as the second line therapeutic option for the treatment of metastatic NSCLC. While the ETB is available as an oral dosage form, the local delivery of this TKI to the diseased cells of the lung may ameliorate its therapeutic impacts. In the current study, we report on the development of ETB-loaded solid lipid nanoparticle (SLN) based formulation of dry powder inhaler (ETB-SLN DPI). ETB-SLNs were formulated using designated amount of compritol/poloxamer 407. The engineered ETB-SLNs showed sub-100 nm spherical shape with an encapsulation efficiency of 78.21%. MTT assay and DAPI staining revealed that the ETB-SLNs enhanced the cytotoxicity of cargo drug molecules in the human alveolar adenocarcinoma epithelial A549 cells as a model fo...

Nanostructured lipid carriers as novel carrier for sunscreen formulations

Abstract: Incorporation of sunscreens into lipid carriers with an increased sun protection factor (SPF) has not yet been fully accomplished. In the present paper, the effectiveness of a sunscreen mixture, incorporated into the novel topical delivery systems, i.e. solid lipid nanoparticles (SLN) and nanostructured lipid carriers (NLC), used as ultraviolet (UV) protector enhancers with a distinctly higher loading capacity has been developed and evaluated. SLN and NLC were produced by hot high pressure homogenization technique in lab scale production. Size distribution and storage stability of formulations were investigated by laser diffractometry and photon correlation spectroscopy. Nanoparticles were characterized by their melting and recrystallization behaviour recorded by differential scanning calorimetry. Lipid nanoparticles produced with a solid matrix (SLN and NLC) were established as a UV protection system. The loading capacities for molecular sunscreens reported before now were in the range of 10-15%. It was possible to load NLC with up to 70% with molecular sunscreen, which is appropriate to obtain high SPFs with this novel UV protection system. The developed formulations provide a beneficial alternative to conventional sunscreen formulations. The UV protective efficacy of the lipid particles varied with the nature of lipid and UV wavelength.

Preparation and characterization of solid lipid nanoparticles-a review.

Abstract: In the present scenario, most of the developed and new discovered drugs are posing real challenge to the formulation scientists due to their poor aqueous solubility which in turn is responsible for poor bioavailability. One of the approach to overcome above problem is the packaging of the drug in to particulate carrier system. Among various carriers, lipid emerged as very attractive candidate because of its unique property of enhancing the bioavailability of poorly water soluble drugs. Solid lipid, one of the physical forms of lipid, is used to formulate nanoparticles, popularly known as Solid lipid nanoparticles (SLNs), as an alternative carrier system to emulsions, liposomes and polymeric micro- and nano-particles. SLNs combine advantages of the traditional systems but avoid some of their major disadvantages. This paper reviews numerous production techniques for SLNs along with their advantages and disadvantages. Special attention is paid to the characterization of the SLNs by using various analytical tools. It also emphasizes on physical state of lipid (supercooled melts, different lipid modifications).

Surface modification of lipid-based nanocarriers for cancer cell-specific drug targeting

Abstract: Targeted drug delivery systems using nanocarriers for anticancer drugs have been investigated for over several decades. Among the many nanocarrier systems, lipid-based nanocarriers such as liposomes, solid lipid nanoparticles, and nanostructured lipid carriers have afforded attention as a carrier system to improve the efficacy of anticancer drugs. Recent efforts have focused on cancer cell-specific drug delivery through the functionalization of the surface of lipid-based nanocarriers with various ligands such as targeting moieties, cell-penetrating peptides, and cell-penetrating homing peptides to overcome non-selectivity, minimize side effects, and enhance antitumor efficacy. However, the use of ligand modification has been limited because the nanocarriers were easily recognized by the mononuclear phagocyte system and thus rapidly removed from the blood circulation. To achieve prolonged systemic circulation, nanocarriers were further modified with protective polymers such as polyethylene glycol (PEG). Unexpectedly, this presented a PEG dilemma, as the interaction of ligands with the target was hindered and induced poor cellular uptake. Recently, stimuli-sensitive cleavage of the PEG coat, following recognition of the cancer cell microclimate, such as low pH, redox-potential, and over-expressed enzymes, was established to solve this problem. This review presents a comprehensive overview on the current state of surface-modified lipid-based nanocarriers for the improved delivery of anticancer drugs.