Felicia D Goodrum Sterling

Felicia D Goodrum Sterling

Member of the Graduate Faculty
Professor, BIO5 Institute
Professor, Cancer Biology - GIDP
Professor, Cellular and Molecular Medicine
Professor, Genetics - GIDP
Professor, Immunobiology
Professor, Molecular and Cellular Biology
Primary Department
Department Affiliations
Contact
(520) 626-7468

Work Summary

Work Summary
Dr. Goodrum's long-standing research focus is to understand the molecular virus-host interactions important to human cytomegalovirus (CMV) latency and persistence in the host. She has focused on identifying viral and host determinants mediating the switch between latent and replicative states. The goal of her research program is to define the mechanistic underpinnings of HCMV latency and reactivation to lay the foundation for clinical interventions to control CMV disease in all settings.

Research Interest

Research Interest
Felicia Goodrum earned her Ph.D. from Wake Forest University School of Medicine studying cell cycle restrictions to adenovirus replication. She trained as a postdoctoral fellow at Princeton University in the laboratory of Dr. Thomas Shenk studying human cytomegalovirus latency. Dr. Goodrum joined the faculty at the University of Arizona in 2006. Dr. Goodrum is the recipient of the Howard Temin Award from the National Cancer Institute, the Pew Scholar in Biomedical Sciences Award, and the Presidential Award for Early Career Scientists and Engineers.Dr. Goodrum's research focuses on the complex host-virus interactions that result in viral persistence. Progress in understanding latent programs of persistence have been impeded by the inherent complexity of the herpesviruses and that paucity of adequate model systems. Herpesviruses are extraordinary for their ability to coexist with their host by establishing life-long latent infections. Latency is defined as a reversibly quiescent state during which viral gene expression and replication is highly restricted. Her laboratory studies cytomegalovirus or CMV, one of eight human herpesviruses. CMV is remarkable in that it persists latently in 60-99% of the population, generally in the absence of disease in the immunocompetent host. Reactivation of CMV from latency poses life-threatening disease risks in immunocompromised individuals, particularly transplant patients. CMV infection is also the leading cause of infectious disease-related birth defects, affecting ~1% of live births in the US. Further, the health cost of the latent coexistence of CMV is just beginning to emerge in an association to age-related pathologies including vascular disease, immune dysfunction and frailty. The key to eradicating CMV lies in understanding latency in order to ultimately develop novel antiviral strategies targeting latently infected cells or to prevent reactivation. Our studies aim to define the molecular basis of persistence by defining viral and cellular determinants important to viral persistence and the mechanisms by which these determinants function in relevant cell models. In turn, our work will provide critical insights into how CMV assimilates into and impacts human biology.

Publications

Goodrum, F. D., & Ornelles, D. A. (1999). Roles for the E4 orf6, orf3, and E1B 55-kilodalton proteins in cell cycle-independent adenovirus replication. Journal of virology, 73(9), 7474-88.

Adenoviruses bearing lesions in the E1B 55-kDa protein (E1B 55-kDa) gene are restricted by the cell cycle such that mutant virus growth is most impaired in cells infected during G(1) and least restricted in cells infected during S phase (F. D. Goodrum and D. A. Ornelles, J. Virol. 71:548-561, 1997). A similar defect is reported here for E4 orf6-mutant viruses. An E4 orf3-mutant virus was not restricted for growth by the cell cycle. However, orf3 was required for enhanced growth of an E4 orf6-mutant virus in cells infected during S phase. The cell cycle restriction may be linked to virus-mediated mRNA transport because both E1B 55-kDa- and E4 orf6-mutant viruses are defective at regulating mRNA transport at late times of infection. Accordingly, the cytoplasmic-to-nuclear ratio of late viral mRNA was reduced in G(1) cells infected with the mutant viruses compared to that in G(1) cells infected with the wild-type virus. By contrast, this ratio was equivalent among cells infected during S phase with the wild-type or mutant viruses. Furthermore, cells infected during S phase with the E1B 55-kDa- or E4 orf6-mutant viruses synthesized more late viral protein than did cells infected during G(1). However, the total amount of cytoplasmic late viral mRNA was greater in cells infected during G(1) than in cells infected during S phase with either the wild-type or mutant viruses, indicating that enhanced transport of viral mRNA in cells infected during S phase cannot account for the difference in yields in cells infected during S phase and in cells infected during G(1). Thus, additional factors affect the cell cycle restriction. These results indicate that the E4 orf6 and orf3 proteins, in addition to the E1B 55-kDa protein, may cooperate to promote cell cycle-independent adenovirus growth.

Bughio, F., Umashankar, M., Wilson, J., & Goodrum, F. (2015). Human Cytomegalovirus UL135 and UL136 Genes Are Required for Postentry Tropism in Endothelial Cells. Journal of virology, 89(13), 6536-50.

Endothelial cells (ECs) are a critical target of viruses, and infection of the endothelium represents a defining point in viral pathogenesis. Human cytomegalovirus (HCMV), the prototypical betaherpesvirus, encodes proteins specialized for entry into ECs and delivery of the genome to the nuclei of ECs. Virus strains competent to enter ECs replicate with differing efficiencies, suggesting that the virus encodes genes for postentry tropism in ECs. We previously reported a specific requirement for the UL133/8 locus of HCMV for replication in ECs. The UL133/8 locus harbors four genes: UL133, UL135, UL136, and UL138. In this study, we find that while UL133 and UL138 are dispensable for replication in ECs, both UL135 and UL136 are important. These genes are not required for virus entry or the expression of viral genes. The phenotypes associated with disruption of either gene reflect phenotypes observed for the UL133/8NULL virus, which lacks the entire UL133/8 locus, but are largely distinct from one another. Viruses lacking UL135 fail to properly envelop capsids in the cytoplasm, produce fewer dense bodies (DB) than the wild-type (WT) virus, and are unable to incorporate viral products into multivesicular bodies (MVB). Viruses lacking UL136 also fail to properly envelop virions and produce larger dense bodies than the WT virus. Our results indicate roles for the UL135 and UL136 proteins in commandeering host membrane-trafficking pathways for virus maturation. UL135 and UL136 represent the first HCMV genes crucial for early- to late-stage tropism in ECs.

Goodrum, F., & Bughio, F. (2015). Viral infection at the endothelium. Oncotarget, 6(29), 26541-2.
Lee, S. H., Caviness, K., Albright, E. R., Lee, J., Gelbmann, C. B., Rak, M., Goodrum, F., & Kalejta, R. F. (2016). Long and Short Isoforms of the Human Cytomegalovirus UL138 Protein Silence IE Transcription and Promote Latency. Journal of virology, 90(20), 9483-94.

The UL133-138 locus present in clinical strains of human cytomegalovirus (HCMV) encodes proteins required for latency and reactivation in CD34(+) hematopoietic progenitor cells and virion maturation in endothelial cells. The encoded proteins form multiple homo- and hetero-interactions and localize within secretory membranes. One of these genes, UL136 gene, is expressed as at least five different protein isoforms with overlapping and unique functions. Here we show that another gene from this locus, the UL138 gene, also generates more than one protein isoform. A long form of UL138 (pUL138-L) initiates translation from codon 1, possesses an amino-terminal signal sequence, and is a type one integral membrane protein. Here we identify a short protein isoform (pUL138-S) initiating from codon 16 that displays a subcellular localization similar to that of pUL138-L. Reporter, short-term transcription, and long-term virus production assays revealed that both pUL138-L and pUL138-S are able to suppress major immediate early (IE) gene transcription and the generation of infectious virions in cells in which HCMV latency is studied. The long form appears to be more potent at silencing IE transcription shortly after infection, while the short form seems more potent at restricting progeny virion production at later times, indicating that both isoforms of UL138 likely cooperate to promote HCMV latency.

Sansoni, P., Vescovini, R., Fagnoni, F. F., Akbar, A., Arens, R., Chiu, Y., Cičin-Šain, L., Dechanet-Merville, J., Derhovanessian, E., Ferrando-Martinez, S., Franceschi, C., Frasca, D., Fulöp, T., Furman, D., Gkrania-Klotsas, E., Goodrum, F., Grubeck-Loebenstein, B., Hurme, M., Kern, F., , Lilleri, D., et al. (2014). New advances in CMV and immunosenescence. Experimental gerontology, 55, 54-62.

Immunosenescence, defined as the age-associated dysregulation and dysfunction of the immune system, is characterized by impaired protective immunity and decreased efficacy of vaccines. An increasing number of immunological, clinical and epidemiological studies suggest that persistent Cytomegalovirus (CMV) infection is associated with accelerated aging of the immune system and with several age-related diseases. However, current evidence on whether and how human CMV (HCMV) infection is implicated in immunosenescence and in age-related diseases remains incomplete and many aspects of CMV involvement in immune aging remain controversial. The attendees of the 4th International Workshop on "CMV & Immunosenescence", held in Parma, Italy, 25-27th March, 2013, presented and discussed data related to these open questions, which are reported in this commentary.