Projects per year
Personal profile
Research interests
Dr. Jeffery Sample’s research focuses on the mechanisms that enable the Epstein-Barr virus (EBV), a human herpesvirus, to contribute to malignancy. He has a long history of contributions to the EBV field, particularly within the area of viral latency, which is the form of EBV infection linked to its significant oncogenic potential. Dr. Sample’s research interests have ranged from deciphering key mechanisms that regulate expression of the EBV latency-associated genes, to the specific contributions that these EBV genes make to cell transformation. Recent focus has been on the regulatory mechanisms that promote persistent latent infection within B lymphocytes, a general prerequisite for the development of EBV-associated tumors which develop years to decades following primary infection. This work has revealed that the EBV genetic locus containing the gene BHLF1 contributes to EBV latency and its associated growth-transforming properties in B lymphocytes. This was totally unexpected, as the BHLF1 gene has long been known to contribute to EBV replication and was not thought to have any role in latency. While BHLF1 can encode an EBV protein during the virus replication cycle, the RNAs expressed from this gene locus during latent infection appear to be long noncoding RNAs (lncRNAs), i.e., transcripts that act not as a template for synthesis of a polypeptide, but directly as RNA. Moreover, the protein-coding potential of this gene appears to rely on the presence of another EBV protein that, unlike BHLF1, is only expressed during virus replication. Thus, BHLF1 appears to be a rare EBV gene that functions during both virus replication and latent infection, albeit through different mechanisms. This is the first observation that a lncRNA-coding locus plays a critical role in EBV latency, and work is underway to define the mechanisms through which BHLF1 contributes to EBV latency and its associated oncogenic potential.
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
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Collaborations and top research areas from the last five years
Projects
- 9 Finished
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Viral Long Noncoding RNA Functions in Epstein-Barr Virus Infection
Sample, J. (PI)
National Institute of Allergy and Infectious Diseases
3/1/14 → 2/29/20
Project: Research project
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Mechanisms of Epstein-Barr Virus Persistence
Sample, J. (PI)
National Institute of Allergy and Infectious Diseases
9/11/13 → 8/31/15
Project: Research project
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Mechanisms of Gene Regulation by EBV EBNA-1 Protein
Sample, J. (PI)
National Institute of Allergy and Infectious Diseases
8/1/09 → 7/31/10
Project: Research project
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Mechanisms of Gene Regulation by EBV EBNA-1 Protein
Sample, J. (PI)
National Institute of Allergy and Infectious Diseases
9/15/08 → 7/31/09
Project: Research project
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The BHLF1 locus of Epstein-Barr virus contributes to viral latency and b-cell immortalization
Yetming, K. D., Lupey-Green, L. N., Biryukov, S., Hughes, D. J., Marendy, E. M., Miranda, J. J. L. & Sample, J. T., Sep 2020, In: Journal of virology. 94, 17, e01215-20.Research output: Contribution to journal › Article › peer-review
Open Access20 Scopus citations -
Gammaherpesvirus infection modulates the temporal and spatial expression of SCGB1A1 (CCSP) and BPIFA1 (SPLUNC1) in the respiratory tract
Leeming, G. H., Kipar, A., Hughes, D. J., Bingle, L., Bennett, E., Moyo, N. A., Tripp, R. A., Bigley, A. L., Bingle, C. D., Sample, J. T. & Stewart, J. P., Jun 28 2015, In: Laboratory Investigation. 95, 6, p. 610-624 15 p.Research output: Contribution to journal › Article › peer-review
Open Access7 Scopus citations -
Hypermethylation of the tumor suppressor gene PRDM1/Blimp-1 supports a pathogenetic role in EBV-positive Burkitt lymphom
Zhang, T., Ma, J., Nie, K., Yan, J., Liu, Y., Bacchi, C. E., Queiroga, E. M., Gualco, G., Sample, J. T., Orazi, A., Knowles, D. M. & Tam, W., Jan 1 2014, In: Blood Cancer Journal. 4, 11, e261.Research output: Contribution to journal › Article › peer-review
Open Access20 Scopus citations -
Contributions of CTCF and DNA methyltransferases DNMT1 and DNMT3B to Epstein-Barr virus restricted latency
Hughes, D. J., Marendy, E. M., Dickerson, C. A., Yetming, K. D., Sample, C. E. & Sample, J. T., Jan 2012, In: Journal of virology. 86, 2, p. 1034-1045 12 p.Research output: Contribution to journal › Article › peer-review
Open Access35 Scopus citations -
CTCF and Sp1 interact with the murine gammaherpesvirus 68 internal repeat elements
Stevens, H. C., Cham, K. S. W., Hughes, D. J., Sun, R., Sample, J. T., Bubb, V. J., Stewart, J. P. & Quinn, J. P., Oct 2012, In: Virus Genes. 45, 2, p. 265-273 9 p.Research output: Contribution to journal › Article › peer-review
3 Scopus citations