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The first human genome sequencing project cost $2.7 billion and was declared complete in 2003, after 15 years of international cooperation and collaboration between several research teams and funding agencies. Today, with the advent of next-generation sequencing technologies, the cost and time of sequencing a human genome have dropped over 100 fold.
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Oncogenic viruses: Lessons learned using next-generation sequencing technologies.

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Fifteen percent of cancers stem from oncogenic human viruses that integrate into host DNA. Understanding these viral integration mechanisms is key to developing better cancer prognoses and therapies.

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Area of Science:

  • Oncology
  • Virology
  • Genomics

Background:

  • Approximately 15% of human cancers are linked to oncogenic viruses.
  • Four key viruses (hepatitis B virus, human papillomavirus, Merkel cell polyomavirus, human T-cell lymphotropic virus) integrate into the host genome.
  • Viral integration can lead to oncogenesis through epigenetic and genetic alterations.

Purpose of the Study:

  • To provide novel insights into the initiating events of cancer onset caused by integrative viruses.
  • To highlight the role of viral integration in cancer development.
  • To discuss potential clinical implications and future research directions.

Main Methods:

  • Leveraging high-throughput sequencing and advanced bioinformatic tools.
  • Analyzing large datasets to map genomic alterations following viral integration.
  • Investigating epigenetic and genetic modifications induced by viral integration.

Main Results:

  • Established the landscape of genomic alterations associated with viral integration.
  • Identified key events occurring post-integration that contribute to cancer onset.
  • Provided a foundation for predicting consequences of viral integration.

Conclusions:

  • Viral integration is a critical factor in a significant portion of virus-driven cancers.
  • Further research into integration mechanisms will improve cancer classification and treatment.
  • Advancements in sequencing and bioinformatics are crucial for understanding viral oncogenesis.