FTO Knockout MAC-T Cell Line

The choice depends on whether you are studying FTO (fat mass and obesity-associated)'s role as the principal m6A (N6-methyladenosine) RNA demethylase or modeling its functions in bovine mammary epithelial biology and lactation. The Knockout line is the standard tool for asking whether FTO is required for these processes — FTO is a 2OG/Fe(II)-dependent dioxygenase that removes m6A modifications from mRNA (and m1A from tRNA, m6Am from cap structures), making it one of two principal m6A 'erasers' (with ALKBH5); FTO common variants are the strongest genetic association with obesity in human GWAS (T allele of rs9939609 is in FTO intron 1 and increases obesity risk). Overexpression is useful for studying FTO in heterologous expression contexts. For bovine lactation and m6A epitranscriptomics research, the EDITGENE FTO Knockout in MAC-T is uniquely valuable — MAC-T is a SV40-immortalized bovine mammary alveolar epithelial cell line, providing a physiologically relevant context for studying FTO biology in milk-producing cells with implications for dairy production. Rescue with wild-type or catalytically-dead FTO is the standard specificity control. The knockout is valuable for studying m6A epitranscriptomics in lactation biology, dairy productivity genetics, and emerging FTO-targeted approaches in obesity drug development (FTO inhibitors like FB23-2, meclofenamic acid have been explored).

Primary applications: • m6A epitranscriptomics: m6A-RIP-seq, MeRIP-seq, or SCARLET analysis of mRNA m6A modifications in FTO-null versus rescued MAC-T cells. • Milk protein expression: β-casein, α-lactalbumin expression analysis given MAC-T's lactogenic capacity and FTO's potential regulatory role in mammary epithelial biology. • Lipid metabolism: lipid droplet formation, fatty acid synthesis given FTO's obesity-associated functions. • FTO inhibitor specificity: critical genetic control for FB23-2, meclofenamic acid, and other FTO-targeting compounds in obesity and cancer drug development. EDITGENE recommends this bovine mammary model for researchers investigating m6A epitranscriptomics, FTO biology, and dairy/agricultural genetic research.

Yes. FTO rescue experiments require attention to dioxygenase architecture: • Construct design: use a codon-modified FTO sequence with a small C-terminal tag (FLAG, HA). FTO has N-terminal AlkB-like dioxygenase domain and C-terminal β-helix domain — preserve all elements. • Catalytically-dead rescue: H231A or D233A active site Fe(II)-coordinating residue mutations abolish demethylase activity and serve as the standard specificity control. • Cross-species considerations: the rescue cDNA should be species-matched (bovine FTO) for physiological relevance in MAC-T context; human FTO can also rescue given evolutionary conservation. • Functional readout: rescue should restore m6A demethylase activity measured by global mRNA m6A levels (LC-MS) or m6A-RIP-seq analysis of specific mRNAs. MAC-T-specific considerations: • MAC-T is a SV40-immortalized bovine mammary alveolar epithelial cell line (also designated as MAC-T cells with myoepithelial/ductal-like profile) — the principal continuous bovine mammary cell model for lactation, milk protein production, and dairy/agricultural research. • Lentiviral transduction efficiency in MAC-T cells may require optimization; the bovine species background must be considered for ortholog and antibody cross-reactivity. • MAC-T cells constitutively express β-casein and respond to lactogenic hormones (prolactin, growth hormone) — these features can be exploited for studying mammary epithelial function in the FTO-null context.