Impacts of particle size on the cytotoxicity, cellular internalization, pharmacokinetics and biodistribution of betulinic acid nanosuspensions in combined chemotherapy

Copyright © 2020 Elsevier B.V. All rights reserved..

To evaluate the effect of particle size on the cellular internalization, tissue distribution, and bioavailability of betulinic acid nanosuspensions (BA/NSs) and further investigate the combined effect of BA/NSs and Taxol® on breast cancer, BA/NSs with different particle sizes (160 nm, 400 nm, and 700 nm) were prepared by an efficient universal green technology. The use of BA/NS (160 nm) was more likely to increase the BA release rate and enhance bioavailability compared with the use of larger size particles. BA/NSs were internalized by 4T1 cells in different ways, including clathrin-mediated endocytosis, caveolae-mediated endocytosis, and macropinocytosis. For the 4T1 orthotopic tumor model, BA/NS (160 nm) showed a tendency to accumulate at a higher level in tumor tissue. Moreover, combination therapy with BA/NSs and Taxol® showed remarkable potential to enhance antitumor activity in vitro and in vivo. The cytotoxicity and apoptotic ability of the different preparations decreased in the following order: BA/NS (160 nm) + Taxol®, BA/NS (400 nm) + Taxol®, and BA/NS (700 nm) + Taxol®. The tumor inhibition rates of BA/NSs (160 nm, 400 nm, and 700 nm) combined with Taxol® were 2.35-, 1.74- and 1.12-fold higher than that of free BA, respectively. The combined chemotherapy showed good safety, indicating that it had the effect of enhancing treatment and reducing toxicity.

Medienart:

E-Artikel

Erscheinungsjahr:

2020

Erschienen:

2020

Enthalten in:

Zur Gesamtaufnahme - volume:588

Enthalten in:

International journal of pharmaceutics - 588(2020) vom: 15. Okt., Seite 119799

Sprache:

Englisch

Beteiligte Personen:

Wang, Ruoning [VerfasserIn]
Wang, Xin [VerfasserIn]
Jia, Xiaoshun [VerfasserIn]
Wang, Honglan [VerfasserIn]
Li, Wen [VerfasserIn]
Li, Junsong [VerfasserIn]

Links:

Volltext

Themen:

4G6A18707N
Betulinic Acid
Betulinic acid nanosuspensions
Cellular internalization, pharmacokinetics and biodistribution
Combined chemotherapy
Different particle sizes
Journal Article
Pentacyclic Triterpenes
Triterpenes

Anmerkungen:

Date Completed 17.06.2021

Date Revised 07.12.2022

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.ijpharm.2020.119799

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM314026053