What the study found
Perfluorohexyloctane (F6H8) caused broad metabolic reprogramming in human HepaRG hepatocytes, which are human liver cells used in research. The study also detected a putative biotransformation product, perfluorohexyloctanoic acid, suggesting that F6H8 may be metabolically persistent.
Why the authors say this matters
The authors conclude that F6H8 may not be metabolically inert as previously assumed. They also say the findings highlight the need for comprehensive, long-term safety assessment of F6H8 and related semifluorinated alkanes.
What the researchers tested
The researchers exposed human HepaRG hepatocytes to F6H8 across a broad concentration range representing short- and long-term exposure scenarios. They used combined targeted and untargeted metabolomic profiling with ultra-high-performance liquid chromatography–quadrupole time-of-flight mass spectrometry (UHPLC-QTOFMS) on intracellular extracts and extracellular media.
What worked and what didn't
F6H8 induced pronounced, concentration-dependent metabolic alterations, and many responses were non-monotonic. Low concentrations mainly affected amino acid, fatty acid, and lipid metabolism, while central carbon metabolism was disrupted only at the highest exposures. The putative metabolite perfluorohexyloctanoic acid was detected and was associated with the cellular metabolic profiles; its effects only partially overlapped with those of the parent compound.
What to keep in mind
These findings come from human HepaRG hepatocytes in a laboratory setting, not from people. The abstract does not describe clinical outcomes or long-term in vivo effects, and it presents the detected biotransformation product as putative.
Key points
- F6H8 caused broad metabolic reprogramming in human HepaRG hepatocytes.
- Metabolic effects were concentration-dependent and often non-monotonic.
- A putative biotransformation product, perfluorohexyloctanoic acid, was detected.
- Low F6H8 concentrations mainly affected amino acid, fatty acid, and lipid metabolism.
- Central carbon metabolism changed only at the highest exposures.
- The authors say the results support long-term safety assessment of F6H8 and related compounds.
Disclosure
- Research title:
- Perfluorohexyloctane altered human hepatocyte metabolism
- Authors:
- Andi Alijagić, Jade Chaker, João Marcos G. Barbosa, Daniel Duberg, Victor Castro‐Alves, Alex M. Dickens, Matej Orešič, Tuulia Hyötyläinen
- Institutions:
- Åbo Akademi University, Örebro University, Örebro University, Örebro University, Örebro University, Örebro University, Örebro University, Turku Centre for Biotechnology, Turku Centre for Computer Science, University of Turku, University of Turku
- Publication date:
- 2026-01-29
- OpenAlex record:
- View
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