A Phospholipase-A Activity in Soluble Leishmania Antigens Causes Instability of Liposomes

Author(s): Omid Chavoshian, Mahdieh Arabsalmani, Mahmoud Reza Jaafari, Ali Khamesipour, Azam Abbasi, Zahra Saberi, Ali Badiee*

Journal Name: Current Drug Delivery

Volume 17 , Issue 9 , 2020

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Graphical Abstract:


Aim: This study aimed to investigate the existence of phospholipase-A (PLA) activity in Soluble L. major Antigens (SLA) because of no reports for it so far. Liposomes were used as sensors to evaluate PLA activity.

Objectives: Liposomal SLA consisting of Egg Phosphatidylcholine (EPC) or Sphingomyelin (SM) were prepared by two different methods in different pH or temperatures and characterized by Dynamic Light Scattering (DLS) and Thin Layer Chromatography (TLC).

Methods: Lipid hydrolysis led to the disruption of EPC liposomal SLA in both methods but the Film Method (FM) produced more stable liposomes than the Detergent Removal Method (DRM).

Result: The preparation of EPC liposomal SLA at pH 6 via FM protected liposomes from hydrolysis to some extent for a short time. EPC liposomes but not SM liposomes were disrupted in the presence of SLA.

Conclusion: Therefore, a phospholipid without ester bond such as SM should be utilized in liposome formulations containing PLA as an encapsulating protein.

Keywords: Phospholipase-A, liposomes, leishmaniasis, soluble L. major antigens, Egg phosphatidylcholine, Sphingomyelin.

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Article Details

Year: 2020
Page: [806 - 814]
Pages: 9
DOI: 10.2174/1567201817666200731164002
Price: $65

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