MFSD12 Knockout Cell Line (HEK293)

The choice depends on whether you are studying MFSD12's role as a lysosomal cysteine/cystine transporter or modeling its association with human skin pigmentation variation. The Knockout line is the standard tool for asking whether MFSD12 is required for these processes — MFSD12 is a lysosomal membrane MFS transporter that imports cysteine and cystine into lysosomes, supplying cysteine for pheomelanin synthesis within melanosomes. Overexpression is useful for studying MFSD12 in heterologous expression contexts. For pigmentation and lysosomal biology research, the EDITGENE MFSD12 Knockout in HEK293 is a mechanistic platform — HEK293 supports systematic structure-function studies of this MFS family transporter. MFSD12 was identified through GWAS as a major determinant of skin pigmentation variation in African populations — common MFSD12 variants are associated with darker skin pigmentation. MFSD12 loss reduces pheomelanin (the yellow-red pigment) without affecting eumelanin. Rescue with wild-type or transport-deficient MFSD12 enables structure-function studies. This product complements the parallel MFSD12 Knockout in HCT 116 (also available) for biochemistry versus pigmentation-relevant studies.

Primary applications: • Lysosomal cysteine/cystine transport: lysosomal cysteine and cystine pool quantification by LC-MS or fluorescent cysteine probes in MFSD12-null cells. • Pheomelanin synthesis: in heterologous melanocyte-relevant contexts, pheomelanin precursor (cysteinyldopa) and pheomelanin/eumelanin ratio analysis. • MFSD12 polymorphism studies: rescue with African population MFSD12 variants for pharmacogenomic/pigmentation studies. • Structure-function studies: rescue with wild-type or transport-deficient MFSD12 in HEK293's high-transfection background. EDITGENE recommends this HEK293-based model for biochemical MFSD12 research and structure-function studies; the parallel MFSD12 Knockout in HCT 116 (also available) is useful for cross-background validation.

Yes. MFSD12 rescue experiments require attention to lysosomal targeting and MFS architecture: • Construct design: use a codon-modified MFSD12 sequence with a small intracellular tag (FLAG, HA). MFSD12 has 12 transmembrane domains and a lysosomal targeting motif — preserve all elements. • Lysosomal localization validation: confirm lysosomal membrane localization by LAMP1 co-staining before functional assays. • Transport-deficient rescue: substrate-binding pocket mutations affecting cysteine/cystine binding abolish transport activity. • Pigmentation polymorphism rescue: African-population-associated MFSD12 variants (associated with darker skin) enable pigmentation genotype-function studies. • Functional readout: rescue should restore lysosomal cysteine/cystine pools and pheomelanin synthesis in melanocyte-relevant contexts. HEK293 transduces efficiently with lentivirus and supports stable rescue line generation.