Tumor Biology

, Volume 37, Issue 2, pp 2587–2596 | Cite as

The role of Kaposi’s sarcoma-associated herpesvirus infection in the proliferation of human bladder cancer cells

Original Article


Existing evidence suggests a possible role of viruses in human bladder cancer development. Recently, Kaposi’s sarcoma-associated herpesvirus (KSHV) was reported to be the most frequently detected virus in bladder cancer tissue from Croatian patients on screening with the Lawrence Livermore Microbial Detection Array. In the current study, to investigate the functional roles of KSHV in bladder cancer, five bladder cancer cell lines were infected with KSHV and their tumour progression-associated changes investigated. Four KSHV-infected bladder cancer cell lines were established; two invasive bladder cancer cell lines showed higher proliferation rates than uninfected cells. Additionally, these KSHV-infected invasive bladder cancer cells showed a greater number of colonies, which were also significantly larger than those of uninfected cells, in a soft agar colony formation assay. cDNA microarray analysis showed that various genes associated with cell proliferation and cancer development were upregulated in these KSHV-infected bladder cancer cells. Taken together, we suggest that KSHV infection affects the proliferation of a subset of invasive bladder cancer cells and may therefore play a role in their oncogenic progression. Further studies are required to elucidate the exact mechanism used by KSHV to promote bladder cancer progression.


Bladder cancer Human herpesvirus 8 Kaposi’s sarcoma-associated herpesvirus Proliferation Microarray 



This work was supported by EMBRI Grant 2015-EMBRI-DJ0001 from the Eulji University.

Conflicts of interest



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Copyright information

© International Society of Oncology and BioMarkers (ISOBM) 2015

Authors and Affiliations

  1. 1.Department of Microbiology and ImmunologyEulji University School of MedicineJung-guSouth Korea
  2. 2.Department of UrologyEulji University Hospital, Eulji University School of MedicineSeo-guSouth Korea

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