Three-dimensional positioning and structure of chromosomes in a human prophase nucleus
Abstract
The human genetic material is packaged into 46 chromosomes. The structure of chromosomes is known at the lowest level, where the DNA chain is wrapped around a core of eight histone proteins to form nucleosomes. Around a million of these nucleosomes, each about 11 nm in diameter and 6 nm in thickness, are wrapped up into the complex organelle of the chromosome, whose structure is mostly known at the level of visible light microscopy to form a characteristic cross shape in metaphase. However, the higher-order structure of human chromosomes, between a few tens and hundreds of nanometers, has not been well understood. We show a three-dimensional (3D) image of a human prophase nucleus obtained by serial block-face scanning electron microscopy, with 36 of the complete set of 46 chromosomes captured within it. The acquired image allows us to extract quantitative 3D structural information about the nucleus and the preserved, intact individual chromosomes within it, including their positioning and full spatial morphology at a resolution of around 50 nm in three dimensions. The chromosome positions were found, at least partially, to follow the pattern of chromosome territories previously observed only in interphase. The 3D conformation shows parallel, planar alignment of themore »
- Authors:
-
- Univ. College London, London (United Kingdom); Research Complex at Harwell, Oxfordshire (United Kingdom); Tongji Univ., Shanghai (China)
- Univ. College London, London (United Kingdom); Research Complex at Harwell, Oxfordshire (United Kingdom)
- The Univ. of Manchester, Manchester (United Kingdom)
- Univ. College London, London (United Kingdom); Research Complex at Harwell, Oxfordshire (United Kingdom); Tongji Univ., Shanghai (China); Brookhaven National Lab. (BNL), Upton, NY (United States)
- Publication Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1372455
- Report Number(s):
- BNL-114059-2017-JA
Journal ID: ISSN 2375-2548; R&D Project: PO011; KC0201060
- Grant/Contract Number:
- SC00112704
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Science Advances
- Additional Journal Information:
- Journal Volume: 3; Journal Issue: 7; Journal ID: ISSN 2375-2548
- Publisher:
- AAAS
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Chen, Bo, Yusuf, Mohammed, Hashimoto, Teruo, Estandarte, Ana Katrina, Thompson, George, and Robinson, Ian. Three-dimensional positioning and structure of chromosomes in a human prophase nucleus. United States: N. p., 2017.
Web. doi:10.1126/sciadv.1602231.
Chen, Bo, Yusuf, Mohammed, Hashimoto, Teruo, Estandarte, Ana Katrina, Thompson, George, & Robinson, Ian. Three-dimensional positioning and structure of chromosomes in a human prophase nucleus. United States. https://doi.org/10.1126/sciadv.1602231
Chen, Bo, Yusuf, Mohammed, Hashimoto, Teruo, Estandarte, Ana Katrina, Thompson, George, and Robinson, Ian. Fri .
"Three-dimensional positioning and structure of chromosomes in a human prophase nucleus". United States. https://doi.org/10.1126/sciadv.1602231. https://www.osti.gov/servlets/purl/1372455.
@article{osti_1372455,
title = {Three-dimensional positioning and structure of chromosomes in a human prophase nucleus},
author = {Chen, Bo and Yusuf, Mohammed and Hashimoto, Teruo and Estandarte, Ana Katrina and Thompson, George and Robinson, Ian},
abstractNote = {The human genetic material is packaged into 46 chromosomes. The structure of chromosomes is known at the lowest level, where the DNA chain is wrapped around a core of eight histone proteins to form nucleosomes. Around a million of these nucleosomes, each about 11 nm in diameter and 6 nm in thickness, are wrapped up into the complex organelle of the chromosome, whose structure is mostly known at the level of visible light microscopy to form a characteristic cross shape in metaphase. However, the higher-order structure of human chromosomes, between a few tens and hundreds of nanometers, has not been well understood. We show a three-dimensional (3D) image of a human prophase nucleus obtained by serial block-face scanning electron microscopy, with 36 of the complete set of 46 chromosomes captured within it. The acquired image allows us to extract quantitative 3D structural information about the nucleus and the preserved, intact individual chromosomes within it, including their positioning and full spatial morphology at a resolution of around 50 nm in three dimensions. The chromosome positions were found, at least partially, to follow the pattern of chromosome territories previously observed only in interphase. The 3D conformation shows parallel, planar alignment of the chromatids, whose occupied volumes are almost fully accounted for by the DNA and known chromosomal proteins. Here, we also propose a potential new method of identifying human chromosomes in three dimensions, on the basis of the measurements of their 3D morphology.},
doi = {10.1126/sciadv.1602231},
journal = {Science Advances},
number = 7,
volume = 3,
place = {United States},
year = {Fri Jul 21 00:00:00 EDT 2017},
month = {Fri Jul 21 00:00:00 EDT 2017}
}
Web of Science
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