For SGBS cells, siRNA transfections were conducted using the Neon Transfection System 100 µL Kit (Invitrogen, Darmstadt, Germany) with a pulse voltage of 1300 V, pulse width 20 ms, pulse number 2 and a cell density of 6 × 10[6 (link)] cells/ml [45 (link)]. A final concentration of 500 nM of AHCY-specific ON-TARGETplus SMARTpool siRNA or ON-TARGETplus control siRNA (Dharmacon, Lafayette, LA, USA) were used. After electroporation, SGBS cells were seeded at a final concentration of 1,000 cells/well in a 96-well format for proliferation analyses and at 100,000 cells/well in a 12-well format for adipocyte differentiation assay. Knockdown efficiency was confirmed using q-PCR and AHCY activity assay.