Journal: Cell Discovery
Article Title: ASCT2 palmitoylation regulated by JNK1-ZDHHC14 axis orchestrates glutamine metabolism and NSCLC progression
doi: 10.1038/s41421-026-00870-z
Figure Lengend Snippet: a NCI-H1299 and NCI-H1975 cells were cultured in the medium with or without glutamine for 12 h, and then the expression levels of ASCT2 and ZDHHC14 were analyzed by western blot. b Palmitoylation effect of glutamine deprivation or H 2 O 2 on ASCT2 in NCI-H1975 cells expressing ASCT2 was examined by immunoprecipitation (IP) and Alkyne-azide click chemistry experiments. c NCI-H1299 (left) and NCI-H1975 (right) cells expressing ASCT2-WT or ASCT2 C39S/C48S mutant were cultured in the medium with or without glutamine for 12 h, and the expression levels of ASCT2 were examined by western blot. d NCI-H1299 cells were cultured in the medium with or without glutamine and treated with addition of 50 μg/mL CHX, harvested at indicated time for western blot. The band density of ZDHHC14 was quantified and normalized to Actin (mean ± SD, n = 3). The p value was determined by two-way ANOVA. e Expression of ASCT2 and ZDHHC14 was analyzed by western blot in NCI-H1299 cells cultured in the medium with or without glutamine and treated with these indicated signaling pathway inhibitors (5 μM LY294002 and 5 μM AZD5363 for inhibiting AKT, 2 μM Dorsomorphin dihydrochloride for inhibiting AMPK, 5 μM Ravoxertinib and 5 μM SCH772984 for inhibiting ERK, 5 μM JNK-IN-8 for inhibiting JNK, 5 μM Adezmapimod and 5 μM SB-202190 for inhibiting p38, and 10 μM MHY1485 for activating mTOR) for 12 h. f NCI-H1299 cells were treated with DMSO, 10 μM MG132, 0.1 μM carf, 25 μM CQ or 0.1 μM BafA1 combined with 0.5 μM Anisomycin for 6 h. g – i ZDHHC14 expression was measured by western blot. NCI-H1299 cells expressing ASCT2-WT ( g ) or ASCT2 C39S/C48S mutant ( h ) were treated with 0.5 μM Anisomycin at the indicated concentrations for 12 h and subjected to western blot with ASCT2, ZDHHC14, JNK1/2/3, Phospho-JNK, and Actin antibodies. ASCT2-Flag expression NCI-H1299 ( i ) and NCI-H1975 cells ( j ) were treated with DMSO or Anisomycin, IP and Alkyne-azide click chemistry experiments examined the effect of Anisomycin on ASCT2 palmitoylation. k NCI-H1299 cells expressing ZDHHC14-Myc were treated with 50 μg/mL CHX and either DMSO or JNK inhibitor (JNK-IN-8), then harvested at indicated time for western blot. The band density of ASCT2 and ZDHHC14 was quantified and normalized to Actin (mean ± SD, n = 3). The p value was determined by two-way ANOVA. l ZDHHC14-knockout cells were co-treated with 50 μg/mL CHX and either DMSO or JNK inhibitor (JNK-IN-8), then harvested at indicated time for western blot. The band density of ASCT2 was quantified and normalized to Actin (mean ± SD, n = 3). The p value was determined by two-way ANOVA.
Article Snippet: JNK-IN-8 (#HY-13319), CC-90001 (#HY-138304), MG132 (#HY-13259), ABD957 (#HY-142161), 2-Bromohexadecanoic acid (2-BP) (#HY-111770), Bafilomycin A1 (BafA1) (#HY-100558), Chloroquine (CQ) (#HY-17589A), Carfilzomib (Carf) (#HY-10455), V9302 (#HY-112683 & #HY-112683A), LY294002 (#HY-10108), AZD5363 (#HY-15431), Ravoxertinib (#HY-15947), SCH772984 (#HY-50846), Adezmapimod (#HY-10256), SB-202190 (#HY-10295), Dorsomorphin dihydrochloride (#HY-13418) and MHY1485 (#HY-B0795) were purchased from MedChemExpress.
Techniques: Cell Culture, Expressing, Western Blot, Immunoprecipitation, Mutagenesis, Knock-Out