Three-dimensional genome architecture persists in a 52,000-year-old woolly mammoth skin sample.
Hi-C
X inactivation
ancient DNA
chromatin loops
fossil
genome architecture
genome assembly
glass transition
vitrification
woolly mammoth
Journal
Cell
ISSN: 1097-4172
Titre abrégé: Cell
Pays: United States
ID NLM: 0413066
Informations de publication
Date de publication:
11 Jul 2024
11 Jul 2024
Historique:
received:
30
06
2023
revised:
07
03
2024
accepted:
03
06
2024
medline:
13
7
2024
pubmed:
13
7
2024
entrez:
12
7
2024
Statut:
ppublish
Résumé
Analyses of ancient DNA typically involve sequencing the surviving short oligonucleotides and aligning to genome assemblies from related, modern species. Here, we report that skin from a female woolly mammoth (†Mammuthus primigenius) that died 52,000 years ago retained its ancient genome architecture. We use PaleoHi-C to map chromatin contacts and assemble its genome, yielding 28 chromosome-length scaffolds. Chromosome territories, compartments, loops, Barr bodies, and inactive X chromosome (Xi) superdomains persist. The active and inactive genome compartments in mammoth skin more closely resemble Asian elephant skin than other elephant tissues. Our analyses uncover new biology. Differences in compartmentalization reveal genes whose transcription was potentially altered in mammoths vs. elephants. Mammoth Xi has a tetradic architecture, not bipartite like human and mouse. We hypothesize that, shortly after this mammoth's death, the sample spontaneously freeze-dried in the Siberian cold, leading to a glass transition that preserved subfossils of ancient chromosomes at nanometer scale.
Identifiants
pubmed: 38996487
pii: S0092-8674(24)00642-1
doi: 10.1016/j.cell.2024.06.002
pii:
doi:
Substances chimiques
Chromatin
0
DNA, Ancient
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
3541-3562.e51Informations de copyright
Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of interests E.L.A., M.T.P.G., and L.D. are on the scientific advisory board of Colossal Biosciences and hold stock options. From 2021 to 2023, M.A.M.-R. received consulting honoraria from Acuity Spatial Genomics. E.L.A. and O.D. are inventors on US provisional patent applications 16/308,386 (E.L.A. and O.D., filed 12/7/2018), 16/247,502 (E.L.A. and O.D., 1/14/2019), and PCT/US2020/064704 (E.L.A., 12/11/2020) by the Baylor College of Medicine and the Broad Institute, relating to the assembly methods in this manuscript.