The tumor microenvironment controls primary effusion lymphoma growth in vivo

Michelle R. Staudt, Yogita Kanan, Joseph H. Jeong, James F. Papin, Rebecca Hines-Boykin, Dirk P. Dittmer

Research output: Contribution to journalArticlepeer-review


Certain lymphomas in AIDS patients, such as primary effusion lymphoma (PEL), are closely associated with the lymphotropic γ herpes virus Kaposi's sarcoma-associated herpes virus (KSHV), also called human herpesvirus 8. The virus is thought to be essential for tumorigenesis, yet systems to investigate PEL in vivo are rare. Here we describe PEL tumorigenesis in a new xenograft model. Embedded in Matrigel, PEL cells formed rapid, well-organized, and angiogenic tumors after s.c. implantation of C.B.17 SCID mice. Without Matrigel we did not observe comparable tumors, which implies that extracellular support and/or signaling aids PEL. All of the tumors maintained the KSHV genome, and the KSHV latent protein LANA/orf73 was uniformly expressed. However, the expression profile for key lytic mRNAs, as well as LANA-2/vIRF3, differed between tissue culture and sites of implantation. We did not observe a net effect of ganciclovir on PEL growth in culture or as xenograft. These findings underscore the importance of the microenvironment for PEL tumorigenesis and simplify the preclinical evaluation of potential anticancer agents.

Original languageEnglish (US)
Pages (from-to)4790-4799
Number of pages10
JournalCancer Research
Issue number14
StatePublished - Jul 15 2004
Externally publishedYes

ASJC Scopus subject areas

  • Oncology
  • Cancer Research


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