Amyloid Proteins Transport RNA Into Sperm Cells

The finding suggests a new method for delivering gene-editing tools without the immune system triggers of viral vectors.

Updated on Oct. 26, 2026 in Life Sciences

Microscopic view of semi-transparent protein fibril clusters and organic filaments suspended in a laboratory medium. — Researchers at Columbia's Zuckerman Institute identified amyloid proteins as a natural transport system for RNA, offering a potential non-viral delivery method for gene-editing tools. AI Illustration. Upload story photo >

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Researchers at Columbia's Zuckerman Institute discovered that amyloid proteins act as a transport system for RNA in sperm cells. This research-stage finding reveals that amyloids bind to RNA and ferry the genetic material into the sperm, potentially offering a new method for gene editing.

Why it matters

This discovery repurposes a protein class historically linked to neurodegenerative diseases into a potential delivery mechanism for gene-editing technologies like CRISPR. By utilizing natural amyloid processes, scientists may bypass immune system reactions currently triggered by traditional viral vectors.

Embryos fertilized using amyloid-shuttled RNA produced 10 times more fluorescent protein than those without. Cryo-electron tomography imaging confirmed that amyloids successfully deliver RNA, which is later released inside the cell by the protein clusterin.

The players

Columbia's Zuckerman Institute

A research center focused on brain science and human behavior that conducted the amyloid imaging studies.

The details

Amyloid fibrils in seminal fluid and RNA molecules bind together because of their opposite electrical charges, creating a stable, protective scaffold. Researchers used cryo-electron tomography — a high-resolution imaging technique that captures 3D structures of biological samples in a near-native state — to observe the proteins entering sperm. Once inside, the protein clusterin acts as a molecular release agent, separating the RNA from the amyloid so it can be utilized by the cell.

October 26, 2026: The research findings were published.

The Tech Race

This research identifies a novel candidate for delivering gene-editing tools into cells. It marks a potential shift away from viral delivery mechanisms, which are currently the standard in the field but often trigger unwanted immune system responses.

This development is in the research stage and does not currently impact medical treatments or reproductive health services. Scientists are now exploring whether this mechanism can be optimized for future clinical gene-editing applications.

The takeaway

Researchers have demonstrated a natural biological scaffold that efficiently transports genetic material into sperm cells. Scientists will now watch for follow-up studies testing whether these amyloid fibrils can reliably deliver CRISPR components into cells for therapeutic gene editing.