P435 HER2/neu-derived peptide conjugated to liposomes containing DOPE as an effective prophylactic vaccine formulation for breast cancer
2019
Niloofar Farzad | Nastaran Barati | Amir Abbas Momtazi-Borojeni | Mona Yazdani | Atefeh Arab | Atefeh Razazan | Sheida Shariat | Mercedeh Mansourian | Azam Abbasi | Zahra Saberi | Ali Badiee | Seyed Amir Jalali | Mahmoud Reza Jaafari
The present study was aimed to develop an effective nanoliposomal vaccine delivery system with P435 HER2/neu-derived peptide conjugated to Maleimide-PEG2000-DSPE. The nanoliposome formulation composed of DSPC/DSPG/Chol/DOPE and monophosphoryl lipid A was used as an adjuvant. Liposomal formulations were prepared and their physical properties were characterized. Anti-tumoral efficacy of formulations was evaluated by immunization of tumor-bearing BALB/c mice and the generated immune response was studied by using ELISpot and flow cytometry analysis. The results of the study demonstrated Lip + DOPE + P535 formulation caused the lowest tumor size and the longest survival time in TUBO mice model and could make it a promising candidate in developing effective vaccines against HER2-positive breast cancers.
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