TY - JOUR
T1 - Chimeric toxins targeted to the human immunodeficiency virus type 1 envelope glycoprotein augment the in vivo activity of combination antiretroviral therapy in thy/liv-SCID-Hu mice
AU - Goldstein, Harris
AU - Pettoello-Mantovani, Massimo
AU - Bera, Tapan K.
AU - Pastan, Ira H.
AU - Berger, Edward A.
N1 - Funding Information:
Financial support: National Institutes of Health (NIH; National Institute of Neurological Disorders and Stroke NS39201 and Centers for AIDS Research Grant Al-27741) and by the NIH Intramural AIDS Targeted Antiviral Program. M.P.M. was supported by an NIH training grant (CA09173).
PY - 2000
Y1 - 2000
N2 - Highly active antiretroviral therapy (HAART), which combines multiple inhibitors of essential human immunodeficiency virus type 1 (HiV-1) enzymes, induces dramatic and sustained viral load reductions in many people infected with HIV-1. However, reservoirs of infected cells capable of producing replication-competent virus persist even after years of HAART, preventing elimination of infection. CD4-PE40 and 3B3(Fv)-PE38, chimeric toxins designed to target the HIV envelope (Env), represent a complementary class of agents that selectively kill productively infected cells. To investigate whether these Env-targeted toxins might serve as adjuncts to HAART for the elimination of infected cells, we tested their ability to augment HAART efficacy in vivo by using a thy/liv SCID-hu mouse model. CD4-PE40 and 3B3(Fv)-PE38 markedly enhanced the capacity of HAART to suppress acute HIV-1 infection and improved HAART-mediated viral load reduction in mice with established HIV-1 infection. These results represent the first demonstration of in vivo anti-HIV-1 efficacy for Env-targeted toxins and support their potential therapeutic utility in combination with HAART.
AB - Highly active antiretroviral therapy (HAART), which combines multiple inhibitors of essential human immunodeficiency virus type 1 (HiV-1) enzymes, induces dramatic and sustained viral load reductions in many people infected with HIV-1. However, reservoirs of infected cells capable of producing replication-competent virus persist even after years of HAART, preventing elimination of infection. CD4-PE40 and 3B3(Fv)-PE38, chimeric toxins designed to target the HIV envelope (Env), represent a complementary class of agents that selectively kill productively infected cells. To investigate whether these Env-targeted toxins might serve as adjuncts to HAART for the elimination of infected cells, we tested their ability to augment HAART efficacy in vivo by using a thy/liv SCID-hu mouse model. CD4-PE40 and 3B3(Fv)-PE38 markedly enhanced the capacity of HAART to suppress acute HIV-1 infection and improved HAART-mediated viral load reduction in mice with established HIV-1 infection. These results represent the first demonstration of in vivo anti-HIV-1 efficacy for Env-targeted toxins and support their potential therapeutic utility in combination with HAART.
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U2 - 10.1086/315351
DO - 10.1086/315351
M3 - Article
C2 - 10720513
AN - SCOPUS:0034081778
SN - 0022-1899
VL - 181
SP - 921
EP - 926
JO - Journal of Infectious Diseases
JF - Journal of Infectious Diseases
IS - 3
ER -