Journal: bioRxiv
Article Title: TMEDs Mediate Versatile Cargo Transport in Vesicle-dependent Unconventional Secretion
doi: 10.1101/2025.05.04.652080
Figure Lengend Snippet: (A and B) Expression level of endogenous TMEDs (TMED1-5 & 7, 9, 10) in wild-type (WT) or TMED10 knockout (10KO) HEK293T (A) and WT or 10KO HeLa cell lines (B) generated by CRISPR-Cas9. The endogenous TMED6 level was low and undetectable in these cell lines. The data are representative of three independent experiments. (C-L) Secretion of mIL-1α (C), mIL-33 (D), mIL-36α (E), mIL-36Ra (F), mIL-37 (G), Galectin-1 (H), Galectin-3 (I), Annexin A1 (J), HSPB5 (K) and Tau (L) in TMED10-KO HEK293T cells with control or expression of TMEDs (TMED1-7 & 9, 10). The data are representative of three independent experiments. (M) Level of endogenous and exogenous TMEDs in WT or TMED10-KO HEK293T cells with control or TMEDs (TMED1-7 & 9, 10) expression for 24h. (N) Secretion of mIL-1β in WT HEK293T cells with control or TMED10 (T10), LMAN2 (L2), ERGIC53 (E53) expression. The data are representative of three independent experiments. (O) Level of endogenous TMEDs (TMED1-5 & 7, 9, 10) in WT or TMED10-KO HEK293T cells with control or TMED10-V5 expression for 96h. (P) Surface delivery of CD59 analyzed by hook and release assay. WT and TMED10-KO HeLa cells with control or TMED10-V5 expression for 72 h were co-transfected with EGFP-SBP-CD59 and streptavidin-KDEL. 23 hours later, the cells were treated without or with 40 μM biotin for 1 h, and then immunofluorescence was conducted with anti-V5 and anti-GM130 antibody. Scale bar, 10 μm. (Q) Secretion of mIL-1β in WT HEK293T cells with control or TMEDs (TMED1-7 & 9, 10) expression. The data are representative of three independent experiments. (R) HEK-Blue IL-1β cells (InvivoGen) were treated with culture medium derived from indicated HEK293T cells or 0.1 μg/ml recombinant mIL-1β (rmIL-1β) as a positive control. Levels of SEAP indicating IL-1β activity in the medium were monitored using QUANTI-Blue (n=3).
Article Snippet: We purchased mouse anti-HSP90AB1 antibody from Santa Cruz, rabbit anti-GRP94, anti-TMED2, anti-TMED3, anti-TMED4, anti-TMED9 and anti-TMED10 antibody from Proteintech, rabbit anti-TMED1, anti-TMED5, anti-TMED6, anti-TMED7 antibody from Novus Biologicals, cycloheximide (CHX), rabbit anti-V5, anti-HA and anti-GST antibody from CST, mouse anti-GM130 antibody from BD Biosciences, mouse anti-tubulin and anti-actin antibody from Abcam.
Techniques: Expressing, Knock-Out, Generated, CRISPR, Control, Release Assay, Transfection, Immunofluorescence, Derivative Assay, Recombinant, Positive Control, Activity Assay