期刊
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
卷 24, 期 16, 页码 -出版社
MDPI
DOI: 10.3390/ijms241612923
关键词
pentacyclic triterpenoids; betulinic acid; anticancer activity; liposomes; nanolipid complexes; microbubble conjugates; in vivo sonoporation
Pentacyclic triterpenoids (TTs) are a unique family of phytochemicals that exhibit interesting properties and pharmacological effects. Some of these compounds, such as betulinic acid (BA) and betulin (B), have been extensively investigated for their potential as anticancer molecules. This review focuses on the anticancer mechanisms, structure-activity relationship, and improved efficiency of TTs when delivered via nanolipid vehicles. The use of liposomes and nanolipid complexes, particularly in conjunction with microbubbles for targeted delivery via sonoporation, opens up new avenues for enhancing the effectiveness of TTs.
Pentacyclic triterpenoids (TTs) represent a unique family of phytochemicals with interesting properties and pharmacological effects, with some representatives, such as betulinic acid (BA) and betulin (B), being mainly investigated as potential anticancer molecules. Considering the recent scientific and preclinical investigations, a review of their anticancer mechanisms, structure-related activity, and efficiency improved by their insertion in nanolipid vehicles for targeted delivery is presented. A systematic literature study about their effects on tumor cells in vitro and in vivo, as free molecules or encapsulated in liposomes or nanolipids, is discussed. A special approach is given to liposome-TTs and nanolipid-TTs complexes to be linked to microbubbles, known as contrast agents in ultrasonography. The production of such supramolecular conjugates to deliver the drugs to target cells via sonoporation represents a new scientific and applicative direction to improve TT efficiency, considering that they have limited availability as lipophilic molecules. Relevant and recent examples of in vitro and in vivo studies, as well as the challenges for the next steps towards the application of these complex delivery systems to tumor cells, are discussed, as are the challenges for the next steps towards the application of targeted delivery to tumor cells, opening new directions for innovative nanotechnological solutions.
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