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Open AccessArticle

TNF-α Blocker Effect of Naringenin-Loaded Sericin Microparticles that Are Potentially Useful in the Treatment of Psoriasis

1
Department of Drug Sciences, Medicinal Chemistry and Pharmaceutical Technology Section (MCPTS), Cell Delivery System Laboratory, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
2
Italfarmaco Research Center, Via dei Lavoratori 54, 20092 Cinisello Balsamo, Italy
3
Innovhub, Stazioni Sperimentali per l'Industria, Divisione Seta, Via Giuseppe Colombo 83, 20133 Milan, Italy
4
Struttura Semplice Tissue Therapy, Niguarda Hospital, Piazza dell'Ospedale Maggiore 3, 20162 Milan, Italy
5
Department of Drug Sciences, Medicinal Chemistry and Pharmaceutical Technology Section (MCPTS), Medicinal Chemistry Laboratory, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
6
Department of Earth and Environmental Sciences, University of Pavia, Via S. Epifanio 14, 27100 Pavia, Italy
7
Center for Studies and Researches in Ethnopharmacy (C.I.St.R.E.), University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Int. J. Mol. Sci. 2014, 15(8), 13624-13636; https://doi.org/10.3390/ijms150813624
Received: 19 May 2014 / Revised: 22 July 2014 / Accepted: 25 July 2014 / Published: 6 August 2014
(This article belongs to the Special Issue Bioactive Phenolics and Polyphenols)
This study aims to evaluate the effect of combined use of the racemic flavanone Naringenin (NRG) and the protein sericin as TNF-α blockers. Sericin (SMs) and (R/S) NRG-loaded Sericin (SNRGMs) microparticles were prepared by spray-drying, characterized in terms of morphology and particle size distribution, and encapsulation efficiency was determined. Concerning morphology and particle size distribution of microparticles, results indicated that they were not affected by the presence of NRG. The encapsulation efficiency was almost quantitative (93%), thus proving that sericin can be advantageously loaded with (R/S) NRG. Biological evaluation of (R/S) NRG, SMs and SNRGMs was then performed in lipopolysaccharide (LPS)-stimulated human peripheral blood mononuclear cells (hPBMC). SNRGMs resulted cytotoxic at the higher dose used (200 μg/mL) and the effect was greater than (R/S) NRG alone. Moreover, even if sericin alone was not effective in suppressing LPS-induced serum TNF-α levels, SNRGMs loaded with 9.3% of (R/S) NRG were significantly more potent than (R/S) NRG alone. In summary, this study provides the proof of concept that sericin-based microspheres loaded with TNF-α-blockers could contribute to the down regulation of the cytokine and represents the starting point for the development of new topical formulations for the treatment of middle-stage psoriasis. View Full-Text
Keywords: flavanones; Naringenin; sericin; microparticles; psoriasis; anti-inflammatory activity; TNF-α flavanones; Naringenin; sericin; microparticles; psoriasis; anti-inflammatory activity; TNF-α
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MDPI and ACS Style

Chlapanidas, T.; Perteghella, S.; Leoni, F.; Faragò, S.; Marazzi, M.; Rossi, D.; Martino, E.; Gaggeri, R.; Collina, S. TNF-α Blocker Effect of Naringenin-Loaded Sericin Microparticles that Are Potentially Useful in the Treatment of Psoriasis. Int. J. Mol. Sci. 2014, 15, 13624-13636.

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