Fig. 2.
Titer of glycoprotein hormones secreted by a transiently transfected CHO cell culture when varying the signal peptides of their β-chains. (a–d) Titer of the heterodimeric form of the hormone (assessed by ELISA) normalized to the level of the control green fluorescent protein eGFP (assessed by fluorimetry). (e–h) Titer of the secreted α-chain with the native signal peptide (assessed by ELISA) normalized to the titer of the heterodimeric form of the hormone. Data are represented as the mean value of three independent biological replicates, with two ELISA measurements for each sample; the value for the control peptide NSP is taken as 100%. * p < 0.05, Tukey’s test. Abbreviations: FSH, follicle-stimulating hormone; LH, luteinizing hormone; hCG, human chorionic gonadotropin; TSH, thyroid-stimulating hormone; NSP, native signal peptide of the corresponding glycoprotein hormone β-chain; HSA, human serum albumin; Azu, azurocidin; aSP, signal peptide of the glycoprotein hormone α-chain.