Researchers Identified Hybrid Proteins in Immune Cells
Scientists discovered that RNA segments from different genes combine to form hybrid proteins during inflammation.
Updated on Sept. 29, 2026 in Life Sciences
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Researchers have identified a biological process where RNA segments from separate genes are joined to create hybrid proteins. This trans-splicing mechanism occurs within macrophages when triggered by inflammatory signals.
Why it matters
Understanding this process reveals how immune cells rapidly generate protein diversity in response to threats like bacteria or viruses. It highlights a complex method by which cells adapt their protein output during tissue repair or immune activation.
Researchers identified over 30,000 hybrid messages in mouse macrophages and 900 in human versions. Among these, 33 human hybrid messages share the same parent genes as those found in mouse studies.
The players
Macrophages
These are specialized immune cells that detect and respond to pathogens and inflammation.
The details
The process involves chromosomes looping to bring distant genes into physical proximity when macrophages detect bacterial signals. Splicing machinery then joins exons from these different genes into a single composite messenger RNA, creating unique proteins.
Timeline
Research findings regarding these hybrid proteins were published in September 2026.
The Big Picture
This discovery challenges the traditional understanding of the human gene transcription regulatory networks by proving that RNA can be spliced across different chromosomes. It suggests that genomic output is far more fluid than once assumed.
By identifying how immune cells create hybrid proteins, this research could eventually lead to new medical treatments that modulate immune responses to infection. It helps map the biological pathways that dictate how bodies heal from bacterial or viral threats.
The takeaway
This study demonstrates that our cells have evolved sophisticated ways to rewire genetic instructions on the fly during times of stress. Recognizing these hybrid proteins opens a new window into how our immune systems differentiate between health and disease.
Further reading
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Source note: This article includes information reported by Forbes.
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