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PlasmaCellControl

Financiado

Transcriptional control of plasma cell development and function

Antibody-secreting cells consisting of short-lived proliferating plasmablasts and long-lived quiescent plasma cells are essential for the acute response to infection and long-term protection of the host against pathogens. Only a f... ver más

31/12/2023

FORSCHUNGSINSTITUT...

3M€

Presupuesto del proyecto: 3M€

Líder del proyecto

FORSCHUNGSINSTITUT FUR MOLEKULARE PATHOLOGIE... No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Ver 2 Participantes

Financiación concedida El organismo H2020 notifico la concesión del proyecto el día 2023-12-31

Línea de financiación objetivo El proyecto se financió a través de la siguiente ayuda:

ERC-2016-ADG: ERC Advanced Grant

I+D

Cerrada hace 8 años

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2 Participantes

FORSCHUNGSINSTITUT FUR MOLEK...

2.50M€ | Lider

FARSENS

571.94K€ | Participante

Últimas noticias

30-11-2024: Cataluña Gestión For... Se ha cerrado la línea de ayuda pública: Gestión Forestal Sostenible para Inversiones Forestales Productivas para el organismo:

29-11-2024: IDAE En las últimas 48 horas el Organismo IDAE ha otorgado 4 concesiones

29-11-2024: ECE En las últimas 48 horas el Organismo ECE ha otorgado 2 concesiones

Duración del proyecto: 78 meses Fecha Inicio: 2017-06-28
Fecha Fin: 2023-12-31

Presupuesto del proyecto 3M€

Descripción del proyecto Antibody-secreting cells consisting of short-lived proliferating plasmablasts and long-lived quiescent plasma cells are essential for the acute response to infection and long-term protection of the host against pathogens. Only a few regulators (Blimp1, IRF4, XBP1, Aiolos, Ikaros and E-proteins) have been implicated in the transcriptional control of antibody-secreting cells, and their target genes, with the exception of Blimp1 and E-proteins, are still unknown. This proposal aims to systematically identify key players in the development and function of antibody-secreting cells by using the CRISPR/Cas9 and Cre/loxP methods. For this, we improved existing protocols to extend the duration of in vitro plasmablast differentiation and showed that Rosa26(Cas9/+) B cells infected with Blimp1 or Xbp1 sgRNA-expressing retroviruses recapitulated the Blimp1 and Xbp1 mutant phenotypes in this proof-of-principle experiment. Moreover, Cre retrovirus-mediated deletion of Irf4, Ikaros and Aiolos strongly impaired plasmablast differentiation in this optimized system. To discover new regulators of plasma cell differentiation, CRISPR/Cas9-based screens will be performed with pooled sgRNA libraries targeting all known upregulated genes in plasmablasts and plasma cells, followed by individual validation of the best hits. Selected top-ranked genes will be analyzed in vivo by conditional mutagenesis with newly generated, plasma cell-specific Cre lines. Regulated target genes of IRF4, Ikaros, Aiolos, XBP1 and the XBP1-regulated transcription factor Bhlha15 will be identified in plasmablasts by ChIP- and RNA-seq analyses. Target genes with potentially interesting functions will be further characterized by CRISPR/Cas9- or Cre/loxP-mediated mutagenesis. These experiments will provide fundamentally new insight into the molecular mechanisms controlling the development and function of antibody-secreting cells, which are the essential effector cells of humoral immunity.

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