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Adv Pharm Bull. Inpress.
doi: 10.34172/apb.2024.022
  Abstract View: 172

Research Article

Xenogeneic Transplantation Promoted Human Exosome Sequestration in Rat Specific Organs

Halimeh Mobarak ORCID logo, Mahdi Mahdipour ORCID logo, Arshad Ghaffari-Nasab, Reza Rahbarghazi* ORCID logo
*Corresponding Author: Email: rezarahbardvm@gmail.com

Abstract

Purpose Exosomes (Exos) are introduced as novel cell-free therapeutics with multiple benefits alongside and/or over-cell therapy. Here, we aimed to study the distribution pattern of normal and cancer xenogeneic Exos and possible interspecies reactions in a rat model. Methods Exos were isolated from normal HUVECs and MDA-MB-231 breast cancer cells. Values like mean diameter size and zeta potential distribution were studied using DLS. The morphology of isolated Exos was monitored by SEM images. Using western blotting, protein levels of exosomal tetraspanins were detected. For the in vivo study, Dil-labeled normal and cancer Exos were injected into the tail vein (100 µg exosomal protein/rat) three times at 1-hour intervals. After 24 hours, rats were euthanized and the cellular uptake of Exos was monitored in different organs using immunofluorescence staining (IF). Results The size distribution and mean zeta potential of HUVEC and MDA-MB-231 cells Exos were 80 ± 29.94 and 64.77 ± 25.49 nm, and −7.58 and −11.8 mV, respectively. Western blotting revealed CD9, CD81, and CD63 in normal and cancer Exos. The SEM images exhibited typical nano-sized round-shape Exo particles. IF staining indicated sequestration of administrated Exos in splenic tissue and lungs. The distribution of Exo in kidneys, aorta, and hepatic tissue was less. These features were more evident in the group that received cancer Exos. We found no obvious adverse effects in rats that received normal or cancer Exos. Conclusion Data indicated that both normal and cancerous xenogeneic human Exos can be sequestrated prominently in splenic tissue and lungs. Novel delivery approaches and engineering tools are helpful in the target delivery of administrated Exos to the injured sites
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Submitted: 18 Jan 2023
Revision: 09 Nov 2023
Accepted: 04 Dec 2023
ePublished: 04 Dec 2023
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