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| Home > In process > Hnrnpa1 is essential for early zebrafish development and lipid metabolism: insights from a novel zebrafish knockout model |
| Home > In process > Hnrnpa1 is essential for early zebrafish development and lipid metabolism: insights from a novel zebrafish knockout model |
| Journal Article | DZNE-2026-00628 |
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2026
Frontiers Media
Lausanne
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Please use a persistent id in citations: doi:10.3389/fcell.2026.1789605
Abstract: RNA binding proteins have multiple diverse cellular functions and are often mis-regulated in disease. Despite their many cellular functions and implications in disease, very little is known about their physiological functions. Here we describe a novel zebrafish knockout model of the RNA binding proteins Hnrnpa1 and Hnrnpa3. Loss of Hnrnpa3 in zebrafish has no obvious morphological phenotype. Similarly, single mutants of the duplicated zebrafish hnrnpa1 genes, hnrnpa1a and hnrnpa1b, have no discernible phenotype, whereas the hnrnpa1a; hnrnpa1b double mutants are embryonic lethal. They display muscle, vascular and developmental defects with a reduced volume of the yolk extension. Metabolic profiling revealed severe changes in lipid metabolism in the hnrnpa1a; hnrnpa1b double mutants. Our analysis identified the involvement of Hnrnpa1 in many cellular pathways including the regulation of lipid metabolism and opens the door for future therapeutic studies in HNRNPA-associated diseases.
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