SREBF1 and myeloid sarcoma: We also found that MeHg increases the transcription of cepb-1 (ortholog to human C/EBP), nhr-49 (ortholog to human peroxisome proliferator activated receptor gamma, PPARγ), and sbp-1 (ortholog to human sterol response element binding protein-1, SREBP-1), pro-adipogenic transcription factors implicated in MS, as well as a number of other genes involved in lipid synthesis and transport [10].