Journal: PLOS Pathogens
Article Title: Nucleus softens during herpesvirus infection
doi: 10.1371/journal.ppat.1013873
Figure Lengend Snippet: (A) Cryo-soft X-ray (SXT) tomography ortho-slices of noninfected (NI) and infected mouse embryonic fibroblast (MEF) cells at 8 hpi. Molecular densities are presented in a continuous grey scale representing linear absorption coefficient values ranging from 0.1 to 0.4 μm -1 (calibration bar). Scale bars, 2 μm. (B) Cross-sections of 3D SXT reconstructions of a noninfected and an infected cell. The high-density region (heterochromatin) is shown in blue, the low-density region (euchromatin) in yellow, the viral replication compartment (VRC/euchromatin) area in green, and the cytoplasm in grey. See also . Quantitative analysis of linear absorption coefficient (LAC) of the (C) low-density and (D) high-density region in noninfected and infected cells at 4 and 8 hpi (n = 6). (E) Representative cross-sections of focused ion beam scanning electron microscopy (FIB-SEM) images of noninfected and infected MEF cells at 8 hpi. The viral capsid (arrows) and nuclear pore complexes (arrowheads) are shown. Scale bars, 0.5 µm. See also . (F) Reconstruction of chromatin fiber thickness and (G) chromatin density as a function of the distance from the nuclear envelope in noninfected and infected cells. The color scale in (F) indicates high and low chromatin thickness (yellow-blue), and in (G) high and low density (yellow-blue). The error bars show the standard deviation. Statistical significance was determined using Tukey’s test, and the significance values are denoted as * (p < 0.05). Nonsignificant differences (p ≥ 0.05) are not labeled.
Article Snippet: Mouse embryonic fibroblast cells (MEF, ATCC CRL-2991) and African green monkey kidney cells (Vero, ATCC CCL-81) were grown in Dulbecco’s modified Eagle medium (DMEM) supplemented with 10% fetal bovine serum, L-glutamine, and penicillin-streptomycin (Gibco-Invitrogen) at 37 °C in the presence of 5% CO 2.
Techniques: Tomography, Infection, Electron Microscopy, Standard Deviation, Labeling
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