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Development of artificial phosphoinositides aiming at HIV eradication

Projektbeschreibung

Strategie von „Einschluss und Apoptose“ im Kampf gegen das HIV

Das Humane Immundefizienz-Virus (HIV) ist nach wie vor ein ernstzunehmendes Problem für die öffentliche Gesundheit und hat bis dato mehr als 40 Millionen Menschenleben gefordert. Trotz aller Bemühungen, die HIV/AIDS-Epidemie zu bekämpfen, ist dies nicht in vollem Umfang gelungen. Jüngste Beobachtungen deuten darauf hin, dass selbst nach einer Behandlung ein virales Reservoir im Körper verbleibt, das gegenüber einer antiretroviralen Arzneimitteltherapie zu resistent ist. Das im Rahmen der Marie-Skłodowska-Curie-Maßnahmen finanzierte Projekt Super-HIPPO wird eine neuartige Strategie namens „Einschluss und Apoptose“ entwickeln. Diese Vorgehensweise basiert auf einem nicht natürlichen Derivat von Inositolhexaphosphat, L-HIPPO, das in der Studie eine starke Wirkung auf HIV-infizierte HeLa-Zellen zeigte. Die Zielsetzung besteht nun darin, ein neues, effizienteres L-HIPPO-Derivat zu entwickeln, das oral verabreicht werden kann.

Ziel

Main challenge of fighting with the HIV is to eliminate the latent viral reservoir from the body. This reservoir is resistant to antiretroviral drug therapy and can cause viral rebound if the treatment is stopped. The removal of the reservoir enables HIV eradication, is urgently desired in HIV-AIDS research. For this purpose, a strategy called “kick and kill” was proposed, based on the hypothesis that activation of latent HIV (“kick”) leads to cell death (“kill”) by physical damage and/or immune activation. However, in clinical tests “kill” process was found to be not enough to reach HIV eradication.
To eradicate HIV from the body, my work has recently suggested a new strategy called “lock-in and apoptosis” instead of “kick and kill”. In development of this strategy, non-natural derivative of inositol hexaphosphate (IP6) named as L-HIPPO was designed based on the fact that the MA domain of Pr55gag which mediates membrane binding through its interaction with inositol phospholipid PIP2 in the host membrane. L-HIPPO was administrated to HIV infected HeLa cells as complex with a carrier α-CDE and suppressed membrane localization of HIV-1 Gag protein and induced strong apoptosis of the host cell containing the latent viruses. In contrast, α-CDE-L-HIPPO induced less apoptosis on T cell line. Besides, the complex of α-CDE-L-HIPPO is inapplicable for oral use. Toward this end, new L-HIPPO derivative with alternative carrier is required.
An ultimate goal of this work is to develop new L-HIPPO derivative (Super-HIPPO) with more potent and efficient activities. My objectives to reach this goal are (1) to synthesize new L-HIPPO derivatives and alternative carriers, (2) to evaluate their activities, (3) to repeat design, synthesis and biological evaluation, if the activities are not enough, (4) to confirm the binding mode of MA-compound, and (5) to achieve personal development and career advancement by performing this study.

Koordinator

IZMIR KATIP CELEBI UNIVERSITESI
Netto-EU-Beitrag
€ 148 478,40
Adresse
IZMIR KATIP CELEBI UNIVERSITESI HAVAALANI SOSESI C NO.33, D.2
35620 İzmir
Türkei

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Higher or Secondary Education Establishments
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