Productively infected murine Kaposi's sarcoma-like tumors define new animal models for studying and targeting KSHV oncogenesis and replication

Brittany M. Ashlock, Qi Ma, Biju Issac, Enrique A Mesri

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Kaposi's sarcoma (KS) is an AIDS-defining cancer caused by the KS-associated herpesvirus (KSHV). KS tumors are composed of KSHV-infected spindle cells of vascular origin with aberrant neovascularization and erythrocyte extravasation. KSHV genes expressed during both latent and lytic replicative cycles play important roles in viral oncogenesis. Animal models able to recapitulate both viral and host biological characteristics of KS are needed to elucidate oncogenic mechanisms, for developing targeted therapies, and to trace cellular components of KS ontogeny. Herein, we describe two new murine models of Kaposi's sarcoma. We found that murine bone marrow-derived cells, whether established in culture or isolated from fresh murine bone marrow, were infectable with rKSHV.219, formed KS-like tumors in immunocompromised mice and produced mature herpesvirus-like virions in vivo. Further, we show in vivo that the histone deacetylase (HDAC) inhibitor suberoylanilide hydroxamic acid (SAHA/Vorinostat) enhanced viral lytic reactivation. We propose that these novel models are ideal for studying both viral and host contributions to KSHV-induced oncogenesis as well as for testing virally-targeted antitumor strategies for the treatment of Kaposi's sarcoma. Furthermore, our isolation of bone marrow-derived cell populations containing a cell type that, when infected with KSHV, renders a tumorigenic KS-like spindle cell, should facilitate systematic identification of KS progenitor cells.

Original languageEnglish
Article numbere87324
JournalPLoS One
Volume9
Issue number1
DOIs
StatePublished - Jan 28 2014

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Kaposi's Sarcoma
Herpesviridae
sarcoma
carcinogenesis
Tumors
Bone
Carcinogenesis
Animals
Animal Models
animal models
neoplasms
mice
Neoplasms
Histone Deacetylase Inhibitors
bone marrow
Genes
Cells
Bone Marrow Cells
cells
Testing

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Medicine(all)

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Productively infected murine Kaposi's sarcoma-like tumors define new animal models for studying and targeting KSHV oncogenesis and replication. / Ashlock, Brittany M.; Ma, Qi; Issac, Biju; Mesri, Enrique A.

In: PLoS One, Vol. 9, No. 1, e87324, 28.01.2014.

Research output: Contribution to journalArticle

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