Human herpesvirus 6 activates lytic cycle replication of Kaposi's sarcoma-associated herpesvirus.



Human herpesvirus 6 activates lytic cycle 

Kaposi's sarcoma-associated herpesvirus (KSHV) or human herpesvirus 8 (HHV-8) is a gamma-herpesvirus consistently identified in Kaposi's sarcoma (KS), primary effusion lymphoma, and multicentric Castleman's disease. KSHV infection appears to be necessary, but not be sufficient for development of KS without other co-factors. However, factors that facilitate KSHV to cause KS have not been well defined. Because patients with KS are often immunosuppressed and susceptible to many infectious agents including human herpesvirus 6 (HHV-6), we investigated the potential of HHV-6 to influence the replication of KSHV. By co-culturing HHV-6-infected T cells with KSHV-latent BCBL-1 cell line, infecting BCBL-1 cells with HHV-6 virions, and generating heterokaryons between HHV-6-infected T cells and BCBL-1 cells, we showed that HHV-6 played a critical role in induction of KSHV replication, as determined by production of lytic phase mRNA transcripts and viral proteins. We confirmed and extended the results by using a luciferase reporter assay in which KSHV ORF50 promoter, the first promoter activated during KSHV replication, drove the luciferase expression. Besides HHV-6, we also found that cytokines such as interferon-gamma partially contributed to induction of KSHV replication in the co-culture system. These findings suggest that HHV-6 may participate in KS pathogenesis by promoting KSHV replication and increasing KSHV viral load.




https://europepmc.org/abstract/pmc/pmc1602294

Popular Posts in the Last 7 Days

HHV-6 and Male infertility (from Perplexity)

Findings of brain anomalies may shed light on chronic fatigue (Caused by HHV-6???)

The gerrymandering of AIDS inflammation

The Movie About the Secret AIDS Epidemic

Popular Post in the Last 30 Days

Researchers evaluate options in case of African Swine Fever outbreaks in Iowa

The Interview with Hillary Johnson

The CDC is hard at work.

A film everyone at NIH and CDC must see!

Popular Posts from the Last Year

Ablashi discusses HHV-6, AIDS, Alzheimer's, and Chronic Fatigue Syndrome

Oral Kaposi's Sarcoma looks like the Crimson Crescents in Chronic Fatigue Syndrome patients.

Dr. Bhupesh Prusty and Professor Thomas Rudel discuss their HHV-6 research

Why HIV should be referred to as "a red herring."

Dr. Rebecca Culshaw Smith's book is discussed on Twitter

Anthony Fauci was part of the gang that silenced and destroyed Judy Mikovits.

All Time Most Popular Posts

Dr. Bhupesh Prusty and Professor Thomas Rudel discuss their HHV-6 research

Anthony Fauci was part of the gang that silenced and destroyed Judy Mikovits.

Was Judy Mikovits destroyed because her XMRV work would have ultimately shown HIV is a total fraud?

Is Chronic Fatigue Syndrome the other AIDS epidemic in the gay community?