Marco A Goicochea

Learn More
A single injection of ML29 reassortant vaccine for Lassa fever induces low, transient viremia, and low or moderate levels of ML29 replication in tissues of common marmosets depending on the dose of the vaccination. The vaccination elicits specific immune responses and completely protects marmosets against fatal disease by induction of sterilizing(More)
Yellow Fever (YF) and Lassa Fever (LF) are two prevalent hemorrhagic fevers co-circulating in West Africa and responsible for thousands of deaths annually. The YF vaccine 17D has been used as a vector for the Lassa virus glycoprotein precursor (LASV-GPC) or their subunits, GP1 (attachment glycoprotein) and GP2 (fusion glycoprotein). Cloning shorter inserts,(More)
Recently, we and others have characterized the HIV-suppressive activity of human β-defensins (hBD) 1–3. Our mechanistic studies indicate that hBD2 inhibits HIV through two distinct mechanisms. The first mechanism results in lower HIV infectivity. The second mechanism is intracellular, since it is observed even delaying treatment up to 2 hours after(More)
Lassa hemorrhagic fever (LHF) is a rodent-borne viral disease that can be fatal for human beings. In this study, an attenuated Lassa vaccine candidate, ML29, was tested in SIV-infected rhesus macaques for its ability to elicit immune responses without instigating signs pathognomonic for arenavirus disease. ML29 is a reassortant between Lassa and Mopeia(More)
HTLV-1, the first tumorigenic retrovirus identified in humans, causes adult-T cell leukemia in about 5% of the infected individuals with a long latency period > 40 years. The mechanism of ATL has been extensively studied with emphasis on the role of regulatory factors encoded by the viral genome including Tax, Rex, p30 p12, p8 and p13. However, the recent(More)
Lassa fever (LF) is one of the most prevalent viral hemorrhagic fevers in West Africa responsible for thousands of deaths annually. The BSL-4 containment requirement and lack of small animal model to evaluate Lassa virus (LASV)-specific cell-mediated immunity (CMI) complicate development of effective LF vaccines. Here we have described a CBA/J-ML29 model(More)
The attenuated Lassa vaccine candidate ML29 is a laboratory-produced reassortant between Lassa and Mopeia viruses, two Old World arenaviruses that differ by 40% in nucleic acid sequence. In our previous studies, ML29 elicited sterilizing immunity against Lassa virus challenge in guinea pigs and marmosets and virus-specific cell-mediated immunity in both(More)
  • 1