Targeting the PI3K and MAPK pathways to treat Kaposi's-sarcoma-associated herpes virus infection and pathogenesis

Phelps J Lambert1, Aniqa Z Shahrier, Audy G Whitman

  • 1Brody School of Medicine at East Carolina University, Department of Microbiology & Immunology, Greenville, NC 27834, USA.

Insights

Kaposi

Area of Science:

  • Cellular biology
  • Virology
  • Molecular signaling

Background:

  • Cellular signaling pathways, including phosphatidylinositol 3-kinase (PI3K) and mitogen-activated protein kinase (MAPK), are crucial for regulating diverse cellular functions.
  • Viruses often exploit these signaling pathways to manipulate host cell processes for their own benefit.
  • Kaposi's sarcoma-associated herpes virus (KSHV) is a notable virus that targets PI3K and MAPK signaling.

Purpose of the Study:

  • To review how KSHV manipulates PI3K and MAPK signaling pathways.
  • To explore the role of these pathways in KSHV infection and pathogenesis.
  • To discuss the potential of targeting PI3K and MAPK pathways to inhibit KSHV.

Main Methods:

  • Literature review of existing research on KSHV, PI3K, and MAPK signaling.
  • Analysis of studies detailing viral manipulation of cellular pathways.
  • Synthesis of information on the role of these pathways in viral replication and disease.

Main Results:

  • KSHV manipulates PI3K and MAPK pathways to control cell survival, migration, and immune responses.
  • These pathways are critical for KSHV reactivation and lytic replication.
  • KSHV-induced manipulation of PI3K and MAPK signaling contributes to malignant transformation.

Conclusions:

  • Targeting PI3K and MAPK signaling pathways presents a potential therapeutic strategy against KSHV infection.
  • Understanding KSHV's manipulation of these pathways is key to developing novel antiviral treatments.
  • Inhibition of PI3K and MAPK could disrupt KSHV pathogenesis and viral replication.

Related Concept Videos

PI3K/mTOR/AKT Signaling Pathway01:22

PI3K/mTOR/AKT Signaling Pathway

The mammalian target of rapamycin  (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1  (mTORC1) and mTOR complex 2  (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast,  mTORC2 consists of a rapamycin-insensitive companion...
Inhibitors of Viral Protein Synthesis01:30

Inhibitors of Viral Protein Synthesis

Protein synthesis is indispensable for viral replication, as viruses lack the cellular machinery required for this process and must hijack the host's translational apparatus. In response, host cells deploy a critical innate immune defense involving interferons, specialized cytokines that play a central role in inhibiting viral propagation.Upon viral detection, infected cells release interferons that bind to receptors on adjacent uninfected cells, activating the JAK-STAT signaling pathway and...
mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
The JAK-STAT Signaling Pathway01:20

The JAK-STAT Signaling Pathway

Several cytokine receptors have tightly bound Janus kinase or JAK proteins attached at their cytosolic tail. Small signaling molecules such as cytokines, growth hormones, or prolactins bind to the cytokine receptors and initiate their dimerization. The dimerization brings the cytosolic JAKs together that trans-phosphorylate and activates each other. The activated JAKs now phosphorylate cytosolic tails of the cytokine receptors, which serve as binding sites for adaptor proteins such as  SH2...
Rous Sarcoma Virus (RSV) and Cancer01:03

Rous Sarcoma Virus (RSV) and Cancer

Rous Sarcoma virus or RSV was discovered by F. Peyton Rous in the year 1911 as a filterable transmissible agent that could cause tumors in chickens. He won a Nobel Prize for this discovery in 1966. His experiments clearly demonstrated that some cancers could be caused by infectious agents and led to the discovery of many more cancer-causing viruses in animals as well as humans.
RSV is a retrovirus that contains two copies of a plus-strand  RNA genome. Its genome consists of four main open...