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Cristelo C, Sá AF, Lúcio M, Sarmento B, Gama FM. Vitamin D loaded into lipid nanoparticles shows insulinotropic effect in INS-1E cells. Eur J Pharm Sci 2024; 196:106758. [PMID: 38570054 DOI: 10.1016/j.ejps.2024.106758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 03/15/2024] [Accepted: 03/30/2024] [Indexed: 04/05/2024]
Abstract
Increasing evidence suggests a beneficial role of vitamin D (VitD) supplementation in addressing the widespread VitD deficiency, but currently used VitD3 formulations present low bioavailability and toxicity constrains. Hence, poly(L-lactide-co-glycolide) (PLGA) nanoparticles (NPs), solid-lipid nanoparticles (SLNs) and nanostructured lipid carriers (NLCs) were investigated to circumvent these issues. PLGA NPs prepared by emulsification or nanoprecipitation presented 74 or 200 nm, and association efficiency (AE) of 68 % and 17 %, respectively, and a rapid burst release of VitD3. Both SLN and NLCs presented higher polydispersity and larger NPs size, around 500 nm, which could be reduced to around 200 nm by use of hot high-pressure homogenization in the case of NLCs. VitD3 was efficiently loaded in both SLNs and NLCs with an AE of 82 and 99 %, respectively. While SLNs showed burst release, NLCs allowed a sustained release of VitD3 for nearly one month. Furthermore, NLCs showed high stability with maintenance of VitD3 loading for up to one month at 4 °C and no cytotoxic effects on INS-1E cells up to 72 h. A trending increase (around 30 %) on glucose-dependent insulin secretion was observed by INS-1E cells pre-treated with VitD3. This effect was consistently observed in the free form and after loading on NLCs. Overall, this work contributed to further elucidation on a suitable delivery system for VitD3 and on the effects of this metabolite on β cell function.
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Affiliation(s)
- Cecília Cristelo
- i3S, Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal; Centro de Engenharia Biológica, Universidade do Minho, Campus de Gualtar, Braga, Portugal; ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Ana Filipa Sá
- Centro de Engenharia Biológica, Universidade do Minho, Campus de Gualtar, Braga, Portugal
| | - Marlene Lúcio
- CF-UM-UP, Centro de Física das Universidades do Minho e Porto, Universidade do Minho, Campus de Gualtar, Braga, Portugal; CBMA, Centro de Biologia Molecular e Ambiental, Universidade do Minho, Campus de Gualtar, Braga, Portugal
| | - Bruno Sarmento
- i3S, Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal; IUCS-CESPU, Instituto Universitário de Ciências da Saúde, Gandra, Portugal
| | - Francisco Miguel Gama
- Centro de Engenharia Biológica, Universidade do Minho, Campus de Gualtar, Braga, Portugal.
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