The + 3010/C single nucleotide polymorphism (rs1710) at the HLA-G 3' untranslated region is associated with a short transcript exhibiting a deletion of 92 nucleotides

© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature..

The physiological expression of HLA-G is mainly observed in the placenta, playing an essential role in maternal-fetal tolerance. Among the HLA-G mRNA alternative transcripts, the one lacking 92 bases at the HLA-G 3' untranslated region (3'UTR), the 92bDel transcript, is more stable, is associated with increased HLA-G soluble levels, and was observed in individuals presenting a 14 bp insertion (14 bp+) at the 3'UTR. We investigated the presence of the 92bDel transcript in placenta samples, correlating its expression levels with the HLA-G polymorphisms at the 3'UTR. The 14 bp+ allele correlates with the presence of the 92bDel transcript. However, the polymorphism triggering this alternative splicing is the + 3010/C allele (rs1710, allele C). Most 14 bp+ haplotypes (UTR-2/-5/-7) present allele + 3010/C. However, 14 bp- haplotypes such as UTR-3 are also associated with + 3010/C, and the 92bDel transcript can be detected in homozygous samples for the 14 bp- allele carrying at least one copy of UTR-3. The UTR-3 haplotype is associated with alleles G*01:04 and the HLA-G lineage HG0104, which is a high-expressing lineage. The only HLA-G lineage that is not likely to produce this transcript is HG010101, associated with the + 3010/G allele. This functional difference may be advantageous, considering the high worldwide frequency of the HG010101 lineage. Therefore, HLA-G lineages are functionally distinct regarding the 92bDel transcript expression, and the 3010/C allele triggers the alternative splicing that produces this shorter and more stable transcript.

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:75

Enthalten in:

Immunogenetics - 75(2023), 2 vom: 06. Apr., Seite 155-160

Sprache:

Englisch

Beteiligte Personen:

Castelli, Erick C [VerfasserIn]
Paes, Gabriela Sato [VerfasserIn]
da Silva, Isabelle Mira [VerfasserIn]
Moreau, Philippe [VerfasserIn]
Donadi, Eduardo A [VerfasserIn]

Links:

Volltext

Themen:

3' Untranslated Regions
3′UTR
92 base deletion
Alternative splicing
Alternative transcript
Expression
HLA-G
HLA-G Antigens
Journal Article
Nucleotides
Polymorphism
Research Support, Non-U.S. Gov't

Anmerkungen:

Date Completed 28.03.2023

Date Revised 29.03.2023

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1007/s00251-023-01297-6

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM35384991X