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Activation of p53-regulated pro-survival signals and hypoxia-independent mitochondrial targeting of TIGAR by human papillomavirus E6 oncoproteins
Virology. 2023 May 22;585:1-20. doi: 10.1016/j.virol.2023.05.004. Online ahead of print.ABSTRACTThe high-risk subtype human papillomaviruses (hrHPVs) infect and oncogenically transform basal epidermal stem cells associated with the development of squamous-cell epithelial cancers. The viral E6 oncoprotein destabilizes the p53 tumor suppressor, inhibits p53 K120-acetylation by the Tat-interacting protein of 60 kDa (TIP60, or Kat5), and prevents p53-dependent apoptosis. Intriguingly, the p53 gene is infrequently mutated in HPV + cervical cancer clinical isolates which suggests a possible paradoxical role for this gatekeeper i...
Source: Virology - May 31, 2023 Category: Virology Authors: Lacin Yapindi Tetiana Bowley Nick Kurtaneck Rachel L Bergeson Kylie James Jillian Wilbourne Carolyn K Harrod Brenda Y Hernandez Brooke M Emerling Courtney Yates Robert Harrod Source Type: research

The human T-cell leukemia virus type-1 tax oncoprotein dissociates NF- κB p65RelA-Stathmin complexes and causes catastrophic mitotic spindle damage and genomic instability.
The human T-cell leukemia virus type-1 tax oncoprotein dissociates NF-κB p65RelA-Stathmin complexes and causes catastrophic mitotic spindle damage and genomic instability. Virology. 2019 Jul 03;535:83-101 Authors: Malu A, Hutchison T, Yapindi L, Smith K, Nelson K, Bergeson R, Pope J, Romeo M, Harrod C, Ratner L, Van Lint C, Harrod R Abstract Genomic instability is a hallmark of many cancers; however, the molecular etiology of chromosomal dysregulation is not well understood. The human T-cell leukemia virus type-1 (HTLV-1) oncoprotein Tax activates NF-κB-signaling and induces DNA-damage and aberrant ...
Source: Virology - July 2, 2019 Category: Virology Authors: Malu A, Hutchison T, Yapindi L, Smith K, Nelson K, Bergeson R, Pope J, Romeo M, Harrod C, Ratner L, Van Lint C, Harrod R Tags: Virology Source Type: research

Galectin-3 plays a role in minute virus of mice infection.
Abstract Galectin-3 has previously been found to be required by the parvovirus minute virus of mice prototype strain (MVMp) for infection of mouse fibroblast cells. Since MVMp is an oncotropic virus, and galectin-3 is a multifunctional protein implicated in cancer metastasis, we hypothesized that galectin-3 and Mgat5, the Golgi enzyme that synthesizes high-affinity glycan ligands of galectin-3, might play a role in MVMp infection. Using siRNA-mediated knockdown of galectin-3 in mouse cells transformed with polyomavirus middle T antigen and Mgat5(-/-) mouse mammary tumor cells, we found that galectin-3 and Mgat5 ar...
Source: Virology - March 10, 2015 Category: Virology Authors: Garcin PO, Nabi IR, Panté N Tags: Virology Source Type: research