Tetra methyl bisphenol F: another potential obesogen

Area of Science:

• Environmental health
• Endocrinology
• Toxicology

Background:

• Global rise in obesity and metabolic diseases linked to lifestyle and genetics.
• Environmental chemicals like Bisphenol A (BPA) are increasingly implicated in obesity.
• Manufacturers are substituting BPA with analogues, necessitating toxicological evaluation.

Purpose of the Study:

• To investigate the adipogenic potential of BPA analogues: Tetra Methyl Bisphenol F (TMBPF), Bisphenol F (BPF), Bisphenol AP (BPAP), and fluorine-9-bisphenol (BHPF).
• To compare the effects of these analogues with BPA on fat cell differentiation.

Main Methods:

• Murine 3T3-L1 cells were treated with BPA and its analogues (0.01–20 µM) during differentiation.
• Assessed lipid accumulation and expression of adipogenic markers (mRNA and protein).

Main Results:

• TMBPF, BPF, and BPA significantly increased lipid accumulation and adipogenic gene expression (Lpl, Fabp4, Plin) at 1–20 µM.
• TMBPF demonstrated a stronger adipogenic effect than BPA and other analogues.
• TMBPF's effect on Fabp4 expression suggests peroxisome proliferator-activated receptor (PPAR) γ activation.

Conclusions:

• BPF mimics BPA's effects, while TMBPF is the most potent adipogenic analogue.
• TMBPF acts as a PPARγ agonist, indicating it is an obesogenic chemical and potential metabolic disruptor.