Human Herpesvirus 6 Activates Lytic Cycle Replication of Kaposi’s Sarcoma-Associated Herpesvirus

 © 2005 American Society for Investigative Pathology

Human Herpesvirus 6 Activates Lytic Cycle Replication of Kaposi’s Sarcoma-Associated Herpesvirus

Chun Lu*{dagger}, Yi Zeng*, Zan Huang{ddagger}, Li Huang*, Chao Qian*, Guixia Tang* and Di Qin*

From the Department of Microbiology and Immunology,* Laboratory of Molecular Virology, and the Laboratory of Reproductive Medicine,{dagger} Nanjing Medical University, Nanjing, People’s Republic of China; and the Department of Cell Biology, Neurology, and Anatomy,{ddagger} Stritch School of Medicine, Loyola University Chicago, Maywood, Illinois

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://web.archive.org/web/20100710022503/http://ajp.amjpathol.org/cgi/content/abstract/166/1/173


Popular Posts in the Last 7 Days

A Perplexity conversation about self-deceit, conspiracy, Arendt and AIDS

Perplexity names the AIDS Paradigm 20

The Centers for Disease Control Announces it Will Continue Cover-up of Chronic Fatigue Syndrome's Relationship to HHV-6 and AIDS

Perplexity on multifactorialism and Peter Duesberg

HHV-6/7/8 Paradigm Shift!

Perplexity on the AIDS paradigm

Perplexity on Rebecca Culshaw Smith, David Ho, and "zombie science."

Carmen R. Green, MD: “We need to learn more about the cellular and molecular mechanisms of this disease and how immunologic, neurologic, and other factors contribute to ME/CFS”

Perplexity on AIDS paradigm shift in nosology and funding

Popular Post in the Last 30 Days

From Perplexity A.I.: A major nosological mistake in AIDS—meaning a fundamental error in how the disease is defined, classified, or diagnosed—could be the most consequential nosological error in history because of several deeply impactful social, scientific, and ethical consequences.

Perplexity on Rebecca Culshaw Smith, and PrEP as Genocide

A Perplexity conversation about self-deceit, conspiracy, Arendt and AIDS

The African Swine Fever Virus Rights of Man

International Cooperation Needed to Fight African Swine Fever

Groq on Hannah Arendt and science

And updated version of the Harvard Declaration of the HHV-6 Rights of Man

Perplexity names the AIDS Paradigm 20

Popular Posts from the Last Year

Perplexity on Rebecca Culshaw Smith, and PrEP as Genocide

Why Brigitte Huber may be the most important AIDS and Chronic Fatigue Syndrome researcher

From Perplexity A.I.: A major nosological mistake in AIDS—meaning a fundamental error in how the disease is defined, classified, or diagnosed—could be the most consequential nosological error in history because of several deeply impactful social, scientific, and ethical consequences.

Perplexity on the issue of endogenous versus exogenous retroviruses. Is this a key to the HIV mistake?

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

Perplexity on K.S. and AIDS and inflammation

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?