Envelope protein-specific B cell receptors direct lentiviral vector tropism in vivo.
Mol Ther
; 32(5): 1311-1327, 2024 May 01.
Article
en En
| MEDLINE
| ID: mdl-38449314
ABSTRACT
While studying transgene expression after systemic administration of lentiviral vectors, we found that splenic B cells are robustly transduced, regardless of the types of pseudotyped envelope proteins. However, the administration of two different pseudotypes resulted in transduction of two distinct B cell populations, suggesting that each pseudotype uses unique and specific receptors for its attachment and entry into splenic B cells. Single-cell RNA sequencing analysis of the transduced cells demonstrated that different pseudotypes transduce distinct B cell subpopulations characterized by specific B cell receptor (BCR) genotypes. Functional analysis of the BCRs of the transduced cells demonstrated that BCRs specific to the pseudotyping envelope proteins mediate viral entry, enabling the vectors to selectively transduce the B cell populations that are capable of producing antibodies specific to their envelope proteins. Lentiviral vector entry via the BCR activated the transduced B cells and induced proliferation and differentiation into mature effectors, such as memory B and plasma cells. BCR-mediated viral entry into clonally specific B cell subpopulations raises new concepts for understanding the biodistribution of transgene expression after systemic administration of lentiviral vectors and offers new opportunities for BCR-targeted gene delivery by pseudotyped lentiviral vectors.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Transducción Genética
/
Linfocitos B
/
Receptores de Antígenos de Linfocitos B
/
Proteínas del Envoltorio Viral
/
Lentivirus
/
Transgenes
/
Vectores Genéticos
Límite:
Animals
/
Humans
Idioma:
En
Revista:
Mol Ther
Asunto de la revista:
BIOLOGIA MOLECULAR
/
TERAPEUTICA
Año:
2024
Tipo del documento:
Article
País de afiliación:
Estados Unidos