ABSTRACT
Purpose
Test pharmacokinetics and biodistribution of a human papillomavirus(HPV)16L1 DNA vaccine delivered in human endogenous retrovirus envelope protein (HERV)-expressing baculovirus (AcHERV) and those of naked plasmid vaccine.
Method
HPV16L1 gene was administrated as a naked plasmid or in AcHERV to mice via intravenous and intramuscular routes. HPV16L1 gene was extracted and assayed by quantitative real-time polymerase chain reaction, which was determined to have a detection limit of 50 copies/µg genomic DNA..
Results
Mean residence times of HPV16L1 in AcHERV were 4.8- and 272.2-fold higher than naked HPV16L1 DNA vaccines after intramuscular and intravenous administration, respectively. Naked HPV16L1 DNA levels 1 month after injection were >3 orders of magnitude lower in each tissue tested than AcHERV-delivered HPV16L1, which was retained in most tissues without specific tissue tropism. AcHERV-delivered HPV16L1 administered intramuscularly persisted at the injection sites. However, the levels of copy numbers in muscle were low (1,800/μg genomic DNA) after 1 month, and undetectable after 6 months.
Conclusions
HPV16L1 delivered via AcHERV resides longer in the body than HPV16L1 in naked form. The lack of tissue tropism ensures the safety of AcHERV vectors for further development.
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Abbreviations
- AcHERV:
-
human endogenous retrovirus envelope protein-expressing baculovirus
- AUC:
-
area under the curve
- AUMC:
-
area under the momentum curve
- CV:
-
coefficient of variation
- GAPDH:
-
glyceraldehyde 3-phosphate dehydrogenase
- gDNA:
-
genomic DNA
- HERV:
-
human endogenous retrovirus envelope protein
- HPV:
-
human papillomavirus
- MRT:
-
mean residence time
- QRT-PCR:
-
quantitative real-time polymerase chain reaction
- VLP:
-
virus-like particles
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ACKNOWLEDGMENTS & DISCLOSURES
This work has been financially supported by grants from the Korean Health Technology R&D Project (No. A092010), Ministry for Health, Welfare & Family Affairs, Republic of Korea, and from the Bio & Medical Technology Development Program of the National Research Foundation funded by the Korean government (MEST) (No. 20110019640).
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Cho, HJ., Lee, S., Im, S. et al. Preclinical Pharmacokinetics and Biodistribution of Human Papillomavirus DNA Vaccine Delivered in Human Endogenous Retrovirus Envelope-Coated Baculovirus Vector. Pharm Res 29, 585–593 (2012). https://doi.org/10.1007/s11095-011-0598-z
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DOI: https://doi.org/10.1007/s11095-011-0598-z