Abstract:
:Human herpes virus 6 (HHV-6) is a common human pathogen that is most often detected in hematopoietic cells. Although human cells harboring chromosomally integrated HHV-6 can be generated in vitro, the availability of such cell lines originating from in vivo tissues is limited. In this study, chromosomally integrated HHV-6B has been identified in a human vascular endothelial cell line, HUV-EC-C (IFO50271), derived from normal umbilical cord tissue. Sequence analysis revealed that the viral genome was similar to the HHV-6B HST strain. FISH analysis using a HHV-6 DNA probe showed one signal in each cell, detected at the distal end of the long arm of chromosome 9. This was consistent with a digital PCR assay, validating one copy of the viral DNA. Because exposure of HUV-EC-C to chemicals did not cause viral reactivation, long term cell culture of HUV-EC-C was carried out to assess the stability of viral integration. The growth rate was altered depending on passage numbers, and morphology also changed during culture. SNP microarray profiles showed some differences between low and high passages, implying that the HUV-EC-C genome had changed during culture. However, no detectable change was observed in chromosome 9, where HHV-6B integration and the viral copy number remained unchanged. Our results suggest that integrated HHV-6B is stable in HUV-EC-C despite genome instability.
journal_name
Cytotechnologyjournal_title
Cytotechnologyauthors
Shioda S,Kasai F,Ozawa M,Hirayama N,Satoh M,Kameoka Y,Watanabe K,Shimizu N,Tang H,Mori Y,Kohara Adoi
10.1007/s10616-017-0119-ysubject
Has Abstractpub_date
2018-02-01 00:00:00pages
141-152issue
1eissn
0920-9069issn
1573-0778pii
10.1007/s10616-017-0119-yjournal_volume
70pub_type
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