A type of fat long thought to be essential for eyesight and fertility turns out to be completely expendable.
April 14, 2026
Original Paper
Beyond the surface: plasmalogens are dispensable for retinal integrity and fertility in the mouse
bioRxiv · 10.64898/2026.04.09.717382
The Takeaway
Scientists believed 'plasmalogens' were the key to preventing cataracts and maintaining reproductive health. This study proves that a different, related lipid can do the job perfectly, debunking a major pillar of lipid biology.
From the abstract
Ether lipids and their subclass, the plasmalogens, are critical regulators of membrane organization, signaling, and stress responses in multiple tissues. Inborn errors in their anabolism cause severe multi-organ diseases such as Rhizomelic Chondrodysplasia Punctata and related peroxisomal disorders. The Gnpat knockout mouse model, characterized by total ether lipid deficiency, recapitulates key features of this disorder, including dense bilateral cataracts, microphthalmia, and infertility, but t