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Amplification, Next-generation Sequencing, and Genomic DNA Mapping of Retroviral Integration Sites

Amplification, Next-generation Sequencing, and Genomic DNA Mapping of Retroviral Integration Sites

Published on: March 22, 2016

Endogenous retroviruses and human evolution.

Konstantin Khodosevich¹, Yuri Lebedev, Eugene Sverdlov

¹Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Science, 16/10 Miklukho-Maklaya, Moscow 117997, Russia. kosthob@humgen.siobc.ras.ru

Comparative and Functional Genomics

|July 17, 2008

Summary

Human evolution may be influenced by changes in gene regulation, particularly from human-specific endogenous retroviruses (ERVs). These ERVs contain regulatory elements that can alter the expression of nearby genes.

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Area of Science:

Genomics
Evolutionary Biology
Molecular Biology

Background:

Humans share ~99% DNA with chimpanzees, suggesting evolutionary differences arise from regulatory changes, not gene content.
Endogenous retroviruses (ERVs) constitute ~5% of the human genome and contain regulatory sequences within their Long Terminal Repeats (LTRs).
Human-specific LTRs are primarily from the active HERV-K family, indicating potential recent regulatory impact.

Purpose of the Study:

To explore the functional consequences of endogenous retrovirus (ERV) integration in the human genome.
To investigate how ERV regulatory elements may have influenced gene expression and contributed to human evolution.

Main Methods:

Review of existing literature on ERV integration and function.
Analysis of the regulatory potential of ERV LTRs.
Discussion of potential impacts on adjacent gene expression.

Main Results:

ERV LTRs possess regulatory sequences like promoters and enhancers.
Human-specific ERVs, particularly HERV-K, are likely integrated into regulatory regions.
Integration can alter the expression of nearby human genes.

Conclusions:

Endogenous retroviruses (ERVs) are a significant source of regulatory innovation in the human genome.
HERV-K family's activity and integration into regulatory regions suggest a role in shaping human gene expression and evolution.
Understanding ERV-gene interactions is crucial for comprehending human evolutionary adaptations.