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SilentFlame

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Silent flagellin in chronic inflammatory and auto-immune disease

The last century has seen a dramatic increase in the prevalence of chronic inflammatory and autoimmune illnesses, including diseases of poorly understood etiology such as Crohn’s disease (CD) and myalgic encephalomyelitis (ME). Re... ver más

31/12/2029

MPG

3M€

Presupuesto del proyecto: 3M€

Líder del proyecto

MAXPLANCKGESELLSCHAFT ZUR FORDERUNG DER WISSE... 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 HORIZON EUROPE notifico la concesión del proyecto el día 2025-01-01

ERC-2023-ADG: ERC ADVANCED GRANTS Scope:Objectives

I+D

Cerrada hace 1 año

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Duración del proyecto: 59 meses Fecha Inicio: 2025-01-01
Fecha Fin: 2029-12-31

Líder del proyecto

MAXPLANCKGESELLSCHAFT ZUR FORDERUNG DER WISSE... No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Presupuesto del proyecto 3M€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto The last century has seen a dramatic increase in the prevalence of chronic inflammatory and autoimmune illnesses, including diseases of poorly understood etiology such as Crohn’s disease (CD) and myalgic encephalomyelitis (ME). Recent reports for CD and ME of elevated levels of antibodies against flagellins made by Lachnospiraceae (Lachno), which are usually associated with health, suggest a common breakdown of immune tolerance. My laboratory recently discovered a new class of flagellin that we termed “silent” because it binds the innate immune receptor TLR5 without inducing a response. Many Lachno species, which are highly abundant and prevalent in the human gut microbiome, encode silent flagellins. We have observed that silent flagellin is highly targeted by antibodies in CD and ME. We hypothesize that the usage of silent flagellins by Lachnos and their reciprocal interactions with host immunity sustain inflammation in the gut and may drive auto-immunity. In SilentFlame, we will explore the breadth of the antibody response against Lachno flagellins in a panel of chronic inflammatory and autoimmune conditions, as well as potential cross-reactivity with human proteins. In parallel, we will investigate the enigmatic role of silent flagellin in bacterial colonization of the gut and host adaptive immune responses, both in homeostasis and inflammation. To do so, we will establish new genetic systems for two Lachno bacteria commonly associated with human health and perform experiments in a germfree transgenic mouse line expressing the human TLR5, as well as human intestinal organoids to account for human specific effects. This research will advance basic understanding of host-microbe reciprocal interactions in homeostasis and chronic inflammation. The knowledge gained will enable the development of targeted therapeutic strategies aimed at restoring balance and ameliorating the conditions that arise when this delicate equilibrium is disrupted.

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