Scientists were looking for one thing – and discovered a human gene inside a virus

A new study published in the journal Science reveals that a human gene called BC200 has integrated into the genetic material of the molluscum contagiosum virus. Researchers identified two distinct segments of the gene within the virus, indicating two separate transfer events. The findings raise questions about the transfer of genetic information between organisms, but scientists clarify there is no evidence the virus has become more dangerous.

A new study published in the journal Science reveals an extraordinary discovery: a small piece of human genetic material has managed to find its way into a virus and integrate into its genetic payload. The study focuses on a human gene called BC200, which is particularly active in brain nerve cells but is also found in skin cells. The gene belongs to the family of 'jumping genes' capable of making copies of themselves and integrating into new locations. An international team of scientists discovered within the genetic material of the molluscum contagiosum virus, which causes a skin disease, two distinct segments originating from the BC200 gene. Analysis of the differences between them indicated two separate events of human genetic material integration into the virus. The researchers identified the biological mechanism that enabled the transfer: the gene utilized the LINE-1 system, a natural transport mechanism for hereditary material. In a laboratory experiment on human cells infected with the virus, an increase in gene activity was observed. The researchers emphasize that this does not mean the virus has acquired traits related to thinking or has become more dangerous, but some of the human segments that integrated into it continue to produce molecules that may affect processes in infected cells.