Your browser doesn't support javascript.
loading
Contribution of Immunoglobulin Enhancers to B Cell Nuclear Organization.
Bruzeau, Charlotte; Cook-Moreau, Jeanne; Pinaud, Eric; Le Noir, Sandrine.
Afiliação
  • Bruzeau C; UMR CNRS 7276, INSERM 1262 and Université de Limoges: Contrôle de la Réponse Immune B et des Lymphoproliférations, 2 Rue du Pr. Descottes, Limoges, France.
  • Cook-Moreau J; UMR CNRS 7276, INSERM 1262 and Université de Limoges: Contrôle de la Réponse Immune B et des Lymphoproliférations, 2 Rue du Pr. Descottes, Limoges, France.
  • Pinaud E; UMR CNRS 7276, INSERM 1262 and Université de Limoges: Contrôle de la Réponse Immune B et des Lymphoproliférations, 2 Rue du Pr. Descottes, Limoges, France.
  • Le Noir S; UMR CNRS 7276, INSERM 1262 and Université de Limoges: Contrôle de la Réponse Immune B et des Lymphoproliférations, 2 Rue du Pr. Descottes, Limoges, France.
Front Immunol ; 13: 877930, 2022.
Article em En | MEDLINE | ID: mdl-35812441
B cells undergo genetic rearrangements at immunoglobulin gene (Ig) loci during B cell maturation. First V(D)J recombination occurs during early B cell stages followed by class switch recombination (CSR) and somatic hypermutation (SHM) which occur during mature B cell stages. Given that RAG1/2 induces DNA double strand breaks (DSBs) during V(D)J recombination and AID (Activation-Induced Deaminase) leads to DNA modifications (mutations during SHM or DNA DSBs during CSR), it is mandatory that IgH rearrangements be tightly regulated to avoid any mutations or translocations within oncogenes. Ig loci contain various cis-regulatory elements that are involved in germline transcription, chromatin modifications or RAG/AID recruitment. Ig cis-regulatory elements are increasingly recognized as being involved in nuclear positioning, heterochromatin addressing and chromosome loop regulation. In this review, we examined multiple data showing the critical interest of studying Ig gene regulation at the whole nucleus scale. In this context, we highlighted the essential function of Ig gene regulatory elements that now have to be considered as nuclear organizers in B lymphocytes.
Assuntos
Palavras-chave

Texto completo: 1 Bases de dados: MEDLINE Assunto principal: Linfócitos B / Switching de Imunoglobulina Idioma: En Revista: Front Immunol Ano de publicação: 2022 Tipo de documento: Article País de afiliação: França

Texto completo: 1 Bases de dados: MEDLINE Assunto principal: Linfócitos B / Switching de Imunoglobulina Idioma: En Revista: Front Immunol Ano de publicação: 2022 Tipo de documento: Article País de afiliação: França