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MDR

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Structural and functional characterization of MAVS DDX3 vRNA complex

The mitochondrial antiviral signalling (MAVS) adaptor protein is a central signalling hub for host cells to mount an antiviral response following RNA virus infections, which is initiated by the cytosolic receptors that trigger the... ver más

31/08/2022

Academisch Medisch...

188K€

Presupuesto del proyecto: 188K€

Líder del proyecto

Academisch Medisch Centrum AMC No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Fecha límite participación Sin fecha límite de participación.

Financiación concedida El organismo H2020 notifico la concesión del proyecto el día 2022-08-31

MSCA-IF-2018: Individual Fellowships

I+D

Cerrada hace 6 años

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Información adicional privada

No hay información privada compartida para este proyecto. Habla con el coordinador.

1 Participantes

Academisch Medisch Centrum A...

187.57K€ | Lider

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Duración del proyecto: 40 meses Fecha Inicio: 2019-04-10
Fecha Fin: 2022-08-31

Líder del proyecto

Academisch Medisch Centrum AMC No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Presupuesto del proyecto 188K€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto The mitochondrial antiviral signalling (MAVS) adaptor protein is a central signalling hub for host cells to mount an antiviral response following RNA virus infections, which is initiated by the cytosolic receptors that trigger the type-I interferon (INFs) path through the MAVS. Recently, it has been shown that the RNA helicase DDX3 is a novel atypical member of the viral cytosolic receptor pool and it is required to activate the MAVS during the antiviral response. In fact, DDX3 is crucial in the translation initiation of the HIV-1 RNA and it is identified as viral RNA sensor able to induce the antiviral immunity in dendritic cells (DCs). DDX3 binds to viral RNAs lacking the poly(A) tails, also known as abortive transcripts, and then associates with the MAVS to trigger the production of type I IFN. Currently, it is unknown how the complex partners MAVS-DDX3-vRNA (MDR) interact for assembly and what is the MDR mechanism of action at molecular level. The proposed research will be focused on the structural and functional characterization of the MDR complex by biophysical and cellular biology techniques. Notably, silencing DDX3 or MAVS expression suppress DC activation in response to HIV-1 infection, an event that in physiological condition is at the front line of host defence against the HIV-1. Therefore, the central role in triggering antiviral immune response makes MDR a strategic pharmacological target. However, addressing this task requires the MDR structure elucidation in order to exploit its molecular features to create a new generation of adjuvants in anti-retroviral therapy. This research provides an understanding of how cellular protein sensors interact with retroviral RNA to trigger the native immune response and induce expression of antiviral proteins.

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