Clusters of polymorphic transmembrane genes control resistance to schistosomes in snail vectors

© 2020, Tennessen et al..

Schistosomiasis is a debilitating parasitic disease infecting hundreds of millions of people. Schistosomes use aquatic snails as intermediate hosts. A promising avenue for disease control involves leveraging innate host mechanisms to reduce snail vectorial capacity. In a genome-wide association study of Biomphalaria glabrata snails, we identify genomic region PTC2 which exhibits the largest known correlation with susceptibility to parasite infection (>15 fold effect). Using new genome assemblies with substantially higher contiguity than the Biomphalaria reference genome, we show that PTC2 haplotypes are exceptionally divergent in structure and sequence. This variation includes multi-kilobase indels containing entire genes, and orthologs for which most amino acid residues are polymorphic. RNA-Seq annotation reveals that most of these genes encode single-pass transmembrane proteins, as seen in another resistance region in the same species. Such groups of hyperdiverse snail proteins may mediate host-parasite interaction at the cell surface, offering promising targets for blocking the transmission of schistosomiasis.

Medienart:

E-Artikel

Erscheinungsjahr:

2020

Erschienen:

2020

Enthalten in:

Zur Gesamtaufnahme - volume:9

Enthalten in:

eLife - 9(2020) vom: 26. Aug.

Sprache:

Englisch

Beteiligte Personen:

Tennessen, Jacob A [VerfasserIn]
Bollmann, Stephanie R [VerfasserIn]
Peremyslova, Ekaterina [VerfasserIn]
Kronmiller, Brent A [VerfasserIn]
Sergi, Clint [VerfasserIn]
Hamali, Bulut [VerfasserIn]
Blouin, Michael Scott [VerfasserIn]

Links:

Volltext

Themen:

Biomphalaria glabrata
Epidemiology
GWAS
Genetics
Genomics
Global health
Host-parasite
Journal Article
Membrane Proteins
Research Support, N.I.H., Extramural
Schistosoma mansoni
Schistosomiasis
Snail

Anmerkungen:

Date Completed 17.03.2021

Date Revised 17.03.2021

published: Electronic

Citation Status MEDLINE

doi:

10.7554/eLife.59395

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM314185526