Summary of Study ST003914
This data is available at the NIH Common Fund's National Metabolomics Data Repository (NMDR) website, the Metabolomics Workbench, https://www.metabolomicsworkbench.org, where it has been assigned Project ID PR002449. The data can be accessed directly via it's Project DOI: 10.21228/M82Z52 This work is supported by NIH grant, U2C- DK119886.
See: https://www.metabolomicsworkbench.org/about/howtocite.php
This study contains a large results data set and is not available in the mwTab file. It is only available for download via FTP as data file(s) here.
| Study ID | ST003914 |
| Study Title | G1P promotes pentose phosphate pathway in CD8+ memory T cells via glycogen-G6PD phase separation and compartmentalization |
| Study Summary | Glucose-6-phosphate (G6P) is a key metabolic molecule that regulates reactive oxygen species (ROS) homeostasis by initiating the pentose phosphate pathway (PPP) to generate NADPH that converts H2O2 to water by providing hydrogen. While both glucose phosphorylation and glycogenolysis result in G6P production, here we show that G6P derived from glycogenolysis, rather than glucose phosphorylation, flows to PPP for ROS clearance in CD8+ memory T (Tm) cells and inflammatory macrophages. Mechanistically, glycogenolysis-produced G1P allosterically induces G6P dehydrogenase (G6PD) binding to glycogen, which together undergo liquid-liquid phase separation (LLPS) and recruit PPP enzymes, resulting in a compartmentalized reaction cascade. Based on mechanistic elucidation, we demonstrated that G1P can act as an antitumor immunotherapeutic agent by modulating memory fitness and maintenance of tumor-reactive CD8+ T cells in mice. These findings revealed an unusual function of glycogen metabolism, which is of paramount importance in the regulation of PPP and redox homeostasis in cells. |
| Institute | Peking Union Medical College |
| Last Name | Zhang |
| First Name | Chaoying |
| Address | No. 5, Dongdan santiao, Dongcheng District, Beijing, Beijing, Beijing, 100005, China |
| zhouyaboqq@gmail.com | |
| Phone | 860169156464 |
| Submit Date | 2025-05-08 |
| Raw Data Available | Yes |
| Raw Data File Type(s) | mzML, raw(Thermo) |
| Analysis Type Detail | LC-MS |
| Release Date | 2025-05-26 |
| Release Version | 1 |
Select appropriate tab below to view additional metadata details:
Project:
| Project ID: | PR002449 |
| Project DOI: | doi: 10.21228/M82Z52 |
| Project Title: | Metabolomic profiling of glycogenolysis-derived G1P promotes pentose phosphate pathway in CD8+ memory T cell |
| Project Summary: | Glucose-6-phosphate (G6P) is a key metabolic molecule that regulates reactive oxygen species (ROS) homeostasis by initiating the pentose phosphate pathway (PPP) to generate NADPH that converts H2O2 to water by providing hydrogen. While both glucose phosphorylation and glycogenolysis result in G6P production, here we show that G6P derived from glycogenolysis, rather than glucose phosphorylation, flows to PPP for ROS clearance in CD8+ memory T (Tm) cells and inflammatory macrophages. Mechanistically, glycogenolysis-produced G1P allosterically induces G6P dehydrogenase (G6PD) binding to glycogen, which together undergo liquid-liquid phase separation (LLPS) and recruit PPP enzymes, resulting in a compartmentalized reaction cascade. Based on mechanistic elucidation, we demonstrated that G1P can act as an antitumor immunotherapeutic agent by modulating memory fitness and maintenance of tumor-reactive CD8+ T cells in mice. These findings revealed an unusual function of glycogen metabolism, which is of paramount importance in the regulation of PPP and redox homeostasis in cells. |
| Institute: | Peking Union Medical College |
| Last Name: | Zhang |
| First Name: | Chaoying |
| Address: | No. 5, Dongdan santiao, Dongcheng District, Beijing, Beijing, Beijing, 100005, China |
| Email: | zhouyaboqq@gmail.com |
| Phone: | 860169156464 |
Subject:
| Subject ID: | SU004049 |
| Subject Type: | Mammal |
| Subject Species: | Mus musculus |
| Taxonomy ID: | 10090 |
Factors:
Subject type: Mammal; Subject species: Mus musculus (Factor headings shown in green)
| mb_sample_id | local_sample_id | Experiment title | Genotype | Treatment condition | Cell type |
|---|---|---|---|---|---|
| SA430583 | FigS1A_1 | Experiment 10 | Wild Type | Cellular glycogen isolation | CD8 T cell |
| SA430584 | FigS1A_3 | Experiment 10 | Wild Type | Cellular glycogen isolation | CD8 T cell |
| SA430585 | FigS1A_2 | Experiment 10 | Wild Type | Cellular glycogen isolation | CD8 T cell |
| SA430592 | Fig_S1c_vec_2h3 | Experiment 11 | Wild Type | control treatment and treat 13C glucose for 2h | CD8 T cell |
| SA430593 | Fig_S1c_vec_2h1 | Experiment 11 | Wild Type | control treatment and treat 13C glucose for 2h | CD8 T cell |
| SA430594 | Fig_S1c_vec_2h2 | Experiment 11 | Wild Type | control treatment and treat 13C glucose for 2h | CD8 T cell |
| SA430595 | Fig_S1c_vec_4h1 | Experiment 11 | Wild Type | control treatment and treat 13C glucose for 4h | CD8 T cell |
| SA430596 | Fig_S1c_vec_4h2 | Experiment 11 | Wild Type | control treatment and treat 13C glucose for 4h | CD8 T cell |
| SA430597 | Fig_S1c_vec_4h3 | Experiment 11 | Wild Type | control treatment and treat 13C glucose for 4h | CD8 T cell |
| SA430586 | Fig_S1c_GPI_2h1 | Experiment 11 | Wild Type | GPI treatment and treat 13C glucose for 2h | CD8 T cell |
| SA430587 | Fig_S1c_GPI_2h2 | Experiment 11 | Wild Type | GPI treatment and treat 13C glucose for 2h | CD8 T cell |
| SA430588 | Fig_S1c_GPI_2h3 | Experiment 11 | Wild Type | GPI treatment and treat 13C glucose for 2h | CD8 T cell |
| SA430589 | Fig_S1c_GPI_4h3 | Experiment 11 | Wild Type | GPI treatment and treat 13C glucose for 4h | CD8 T cell |
| SA430590 | Fig_S1c_GPI_4h1 | Experiment 11 | Wild Type | GPI treatment and treat 13C glucose for 4h | CD8 T cell |
| SA430591 | Fig_S1c_GPI_4h2 | Experiment 11 | Wild Type | GPI treatment and treat 13C glucose for 4h | CD8 T cell |
| SA430604 | Fig_S1E_GYSKO1_2h3 | Experiment 12 | sgGys1 | GYS1 sgRNA and and treat 13C glucose for 2h | CD8 T cell |
| SA430605 | Fig_S1E_GYSKO1_2h2 | Experiment 12 | sgGys1 | GYS1 sgRNA and and treat 13C glucose for 2h | CD8 T cell |
| SA430606 | Fig_S1E_GYSKO1_2h1 | Experiment 12 | sgGys1 | GYS1 sgRNA and and treat 13C glucose for 2h | CD8 T cell |
| SA430607 | Fig_S1E_SGgys1_4h2 | Experiment 12 | sgGys1 | GYS1 sgRNA and and treat 13C glucose for 4h | CD8 T cell |
| SA430608 | Fig_S1E_SGgys1_4h3 | Experiment 12 | sgGys1 | GYS1 sgRNA and and treat 13C glucose for 4h | CD8 T cell |
| SA430609 | Fig_S1E_SGgys1_4h1 | Experiment 12 | sgGys1 | GYS1 sgRNA and and treat 13C glucose for 4h | CD8 T cell |
| SA430598 | Fig_S1E_SGCON_2h2 | Experiment 12 | Wild Type | control sgRNA and and treat 13C glucose for 2h | CD8 T cell |
| SA430599 | Fig_S1E_SGCON_2h1 | Experiment 12 | Wild Type | control sgRNA and and treat 13C glucose for 2h | CD8 T cell |
| SA430600 | Fig_S1E_SGCON_2h3 | Experiment 12 | Wild Type | control sgRNA and and treat 13C glucose for 2h | CD8 T cell |
| SA430601 | Fig_S1E_SGCON_4h1 | Experiment 12 | Wild Type | control sgRNA and and treat 13C glucose for 4h | CD8 T cell |
| SA430602 | Fig_S1E_SGCON_4h2 | Experiment 12 | Wild Type | control sgRNA and and treat 13C glucose for 4h | CD8 T cell |
| SA430603 | Fig_S1E_SGCON_4h3 | Experiment 12 | Wild Type | control sgRNA and and treat 13C glucose for 4h | CD8 T cell |
| SA430616 | Fig_S1H_SGGYS1_1 | Experiment 13 | sgGys1 | SG gys1 sgRNA | BMDM |
| SA430617 | Fig_S1H_SGGYS1_2 | Experiment 13 | sgGys1 | SG gys1 sgRNA | BMDM |
| SA430618 | Fig_S1H_SGGYS1_3 | Experiment 13 | sgGys1 | SG gys1 sgRNA | BMDM |
| SA430619 | Fig_S1G_SGGYS1_1 | Experiment 13 | sgGys1 | SG gys1 sgRNA | CD8 T cell |
| SA430620 | Fig_S1G_SGGYS1_2 | Experiment 13 | sgGys1 | SG gys1 sgRNA | CD8 T cell |
| SA430621 | Fig_S1G_SGGYS1_3 | Experiment 13 | sgGys1 | SG gys1 sgRNA | CD8 T cell |
| SA430610 | Fig_S1H_SGCTRL_1 | Experiment 13 | Wild Type | control sgRNA | BMDM |
| SA430611 | Fig_S1H_SGCTRL_3 | Experiment 13 | Wild Type | control sgRNA | BMDM |
| SA430612 | Fig_S1H_SGCTRL_2 | Experiment 13 | Wild Type | control sgRNA | BMDM |
| SA430613 | Fig_S1G_SGCTRL_1 | Experiment 13 | Wild Type | control sgRNA | CD8 T cell |
| SA430614 | Fig_S1G_SGCTRL_2 | Experiment 13 | Wild Type | control sgRNA | CD8 T cell |
| SA430615 | Fig_S1G_SGCTRL_3 | Experiment 13 | Wild Type | control sgRNA | CD8 T cell |
| SA430628 | Fig_S1i_dmso_3 | Experiment 14 | Wild Type | control treatment | CD8 T cell |
| SA430629 | Fig_S1i_dmso_2 | Experiment 14 | Wild Type | control treatment | CD8 T cell |
| SA430630 | Fig_S1i_dmso_1 | Experiment 14 | Wild Type | control treatment | CD8 T cell |
| SA430622 | Fig_S1i_Gpi_g1p_2 | Experiment 14 | Wild Type | GPI and G1P treatment | CD8 T cell |
| SA430623 | Fig_S1i_Gpi_g1p_1 | Experiment 14 | Wild Type | GPI and G1P treatment | CD8 T cell |
| SA430624 | Fig_S1i_Gpi_g1p_3 | Experiment 14 | Wild Type | GPI and G1P treatment | CD8 T cell |
| SA430625 | Fig_S1i_Gpi_2 | Experiment 14 | Wild Type | GPI treatment | CD8 T cell |
| SA430626 | Fig_S1i_Gpi_3 | Experiment 14 | Wild Type | GPI treatment | CD8 T cell |
| SA430627 | Fig_S1i_Gpi_1 | Experiment 14 | Wild Type | GPI treatment | CD8 T cell |
| SA430637 | Fig_S1L_PGM1SG_G6P_2 | Experiment 15 | sgPGM1 | PGM1 sgRNA and G6P LNP treatment | BMDM |
| SA430638 | Fig_S1L_PGM1SG_G6P_1 | Experiment 15 | sgPGM1 | PGM1 sgRNA and G6P LNP treatment | BMDM |
| SA430639 | Fig_S1L_PGM1SG_G6P_3 | Experiment 15 | sgPGM1 | PGM1 sgRNA and G6P LNP treatment | BMDM |
| SA430640 | Fig_S1K_SGPGM1_G6P_3 | Experiment 15 | sgPGM1 | PGM1 sgRNA and G6P LNP treatment | CD8 T cell |
| SA430641 | Fig_S1K_SGPGM1_G6P_1 | Experiment 15 | sgPGM1 | PGM1 sgRNA and G6P LNP treatment | CD8 T cell |
| SA430642 | Fig_S1K_SGPGM1_G6P_2 | Experiment 15 | sgPGM1 | PGM1 sgRNA and G6P LNP treatment | CD8 T cell |
| SA430643 | Fig_S1L_PGM1SG_3 | Experiment 15 | sgPGM1 | PGM1 sgRNA | BMDM |
| SA430644 | Fig_S1L_PGM1SG_2 | Experiment 15 | sgPGM1 | PGM1 sgRNA | BMDM |
| SA430645 | Fig_S1L_PGM1SG_1 | Experiment 15 | sgPGM1 | PGM1 sgRNA | BMDM |
| SA430646 | Fig_S1K_SGPGM1_1 | Experiment 15 | sgPGM1 | PGM1 sgRNA | CD8 T cell |
| SA430647 | Fig_S1K_SGPGM1_2 | Experiment 15 | sgPGM1 | PGM1 sgRNA | CD8 T cell |
| SA430648 | Fig_S1K_SGPGM1_3 | Experiment 15 | sgPGM1 | PGM1 sgRNA | CD8 T cell |
| SA430631 | Fig_S1L_SGNC_3 | Experiment 15 | Wild Type | control sgRNA | BMDM |
| SA430632 | Fig_S1L_SGNC_2 | Experiment 15 | Wild Type | control sgRNA | BMDM |
| SA430633 | Fig_S1L_SGNC_1 | Experiment 15 | Wild Type | control sgRNA | BMDM |
| SA430634 | Fig_S1K_SGNC_1 | Experiment 15 | Wild Type | control sgRNA | CD8 T cell |
| SA430635 | Fig_S1K_SGNC_3 | Experiment 15 | Wild Type | control sgRNA | CD8 T cell |
| SA430636 | Fig_S1K_SGNC_2 | Experiment 15 | Wild Type | control sgRNA | CD8 T cell |
| SA430652 | Fig1_S1O_GPI_1 | Experiment 16 | Wild Type | control treatment | CD8 T cell |
| SA430653 | Fig1_S1O_GPI_2 | Experiment 16 | Wild Type | control treatment | CD8 T cell |
| SA430654 | Fig1_S1O_GPI_3 | Experiment 16 | Wild Type | control treatment | CD8 T cell |
| SA430649 | Fig1_S1O_VEC_3 | Experiment 16 | Wild Type | GPI treatment | CD8 T cell |
| SA430650 | Fig1_S1O_VEC_1 | Experiment 16 | Wild Type | GPI treatment | CD8 T cell |
| SA430651 | Fig1_S1O_VEC_2 | Experiment 16 | Wild Type | GPI treatment | CD8 T cell |
| SA430658 | Fig1_S1S_BLANK NP_1 | Experiment 17 | Wild Type | control NP | CD8 T cell |
| SA430659 | Fig1_S1S_BLANK NP_2 | Experiment 17 | Wild Type | control NP | CD8 T cell |
| SA430660 | Fig1_S1S_BLANK NP_3 | Experiment 17 | Wild Type | control NP | CD8 T cell |
| SA430655 | Fig1_S1S_G1P NP_1 | Experiment 17 | Wild Type | G1P LNP treatment | CD8 T cell |
| SA430656 | Fig1_S1S_G1P NP_3 | Experiment 17 | Wild Type | G1P LNP treatment | CD8 T cell |
| SA430657 | Fig1_S1S_G1P NP_2 | Experiment 17 | Wild Type | G1P LNP treatment | CD8 T cell |
| SA430661 | Fig_S4i_D421A_2 | Experiment 18 | D421A | G6PD D421 KI | CD8 T cell |
| SA430662 | Fig_S4i_D421A_3 | Experiment 18 | D421A | G6PD D421 KI | CD8 T cell |
| SA430663 | Fig_S4i_D421A_1 | Experiment 18 | D421A | G6PD D421 KI | CD8 T cell |
| SA430664 | Fig_S4i_WT_1 | Experiment 18 | Wild Type | G6PD WT KI | CD8 T cell |
| SA430665 | Fig_S4i_WT_2 | Experiment 18 | Wild Type | G6PD WT KI | CD8 T cell |
| SA430666 | Fig_S4i_WT_3 | Experiment 18 | Wild Type | G6PD WT KI | CD8 T cell |
| SA430670 | Fig_S4m_DMSO_3 | Experiment 19 | Wild Type | control treatment | CD8 T cell |
| SA430671 | Fig_S4m_DMSO_1 | Experiment 19 | Wild Type | control treatment | CD8 T cell |
| SA430672 | Fig_S4m_DMSO_2 | Experiment 19 | Wild Type | control treatment | CD8 T cell |
| SA430667 | Fig_S4m_GPI_1 | Experiment 19 | Wild Type | GPI treatment | CD8 T cell |
| SA430668 | Fig_S4m_GPI_2 | Experiment 19 | Wild Type | GPI treatment | CD8 T cell |
| SA430669 | Fig_S4m_GPI_3 | Experiment 19 | Wild Type | GPI treatment | CD8 T cell |
| SA430673 | Fig_1b_2DG_1 | Experiment 1 | Wild Type | 2-deoxy-D-glucose (2-DG, 1 mM) | CD8 T cell |
| SA430674 | Fig_1b_2DG_2 | Experiment 1 | Wild Type | 2-deoxy-D-glucose (2-DG, 1 mM) | CD8 T cell |
| SA430675 | Fig_1b_2DG_3 | Experiment 1 | Wild Type | 2-deoxy-D-glucose (2-DG, 1 mM) | CD8 T cell |
| SA430679 | Fig_1A_VEC_1 | Experiment 1 | Wild Type | control treatment | CD8 T cell |
| SA430680 | Fig_1A_VEC_2 | Experiment 1 | Wild Type | control treatment | CD8 T cell |
| SA430681 | Fig_1A_VEC_3 | Experiment 1 | Wild Type | control treatment | CD8 T cell |
| SA430682 | Fig_1b_vec_1 | Experiment 1 | Wild Type | control treatment | CD8 T cell |
| SA430683 | Fig_1b_vec_2 | Experiment 1 | Wild Type | control treatment | CD8 T cell |
| SA430684 | Fig_1b_vec_3 | Experiment 1 | Wild Type | control treatment | CD8 T cell |
| SA430676 | Fig_1A_HKi_1 | Experiment 1 | Wild Type | HK inhibitor Lonidamine (50 μM) | CD8 T cell |
Collection:
| Collection ID: | CO004042 |
| Collection Summary: | Murine CD8⁺ T cells were isolated from the spleens of C57BL/6J mice using negative selection with magnetic-activated cell sorting (MACS; Mouse CD8⁺ T Cell Isolation Kit, Miltenyi Biotec, Germany). For the generation of stable gene knockouts in CD8⁺ T cells or interferon-gamma (IFN-γ)-stimulated immortalized bone marrow-derived macrophages (iBMDMs), single-guide RNAs (sgRNAs) were synthesized using the HiScribe® Quick T7 High Yield RNA Synthesis Kit (New England Biolabs, #E2050, USA). A total of 1 × 10⁶ T cells or IFN-γ-stimulated iBMDMs were resuspended in 20 µL of P3 Primary Cell Nucleofector Solution (Lonza, for the 4D-Nucleofector system), and co-electroporated with 0.5 µg of sgRNA and recombinant Cas9 protein. Isolated CD8⁺ T cells were activated using anti-CD3/CD28 magnetic beads (Thermo Fisher Scientific, #11453) according to the manufacturer’s instructions. Briefly, 1 × 10⁶ purified splenic OT-I CD8⁺ T cells were cultured in 1 mL RPMI 1640 medium containing 25 µL of pre-washed anti-CD3/CD28 beads and 10 ng/mL interleukin-2 (IL-2; PeproTech, #212-12) for three days. Following activation, cells were harvested, washed three times with RPMI 1640 medium, and further cultured at 2 × 10⁵ cells/mL in the presence of 10 ng/mL interleukin-15 (IL-15; PeproTech, #210-15) in 12-well culture plates (Corning, #3336) for an additional four days to induce memory CD8⁺ T cell (T_m) differentiation. Fresh medium supplemented with cytokines was replaced daily during the induction process. Mouse iBMDMs were cultured in Dulbecco’s Modified Eagle Medium (DMEM; Gibco, USA) supplemented with 10% fetal bovine serum (FBS). For gene knockout experiments, 1 × 10⁶ IFN-γ-stimulated iBMDMs were subjected to nucleofection as described above, using sgRNAs and Cas9 protein. |
| Sample Type: | Immune cell |
| Storage Conditions: | On ice |
Treatment:
| Treatment ID: | TR004058 |
| Treatment Summary: | Experiment 1: CD8⁺ memory T (T_m) cells were treated with hexokinase (HK) inhibitor lonidamine (50 μM) or 2-deoxy-D-glucose (2-DG, 1 mM) for 24 hours. Ribose-5-phosphate (R5P) and sedoheptulose-7-phosphate (S7P) were detected. Experiment 2: CD8⁺ T_m cells were cultured in uniformly labeled 13C₆-glucose for 7 days and then switched to unlabeled 12C-glucose for 2 or 4 hours. m+5 labeled R5P was detected. Experiment 3: Control (sgCtrl) or glycogen phosphorylase brain isoform (sgPygb) CD8⁺ T_m cells cultured in 13C₆-glucose were switched to 12C-glucose for 2 or 4 hours. m+5 labeled R5P was detected. Experiment 4: sgCtrl or sgPygb CD8⁺ T_m cells were treated with glucose-1-phosphate-loaded nanoparticles (G1P-NPs, 5 μM) for 24 hours. R5P and S7P levels were detected. Experiment 5: CD8⁺ T_m cells pretreated with G1P-NPs (5 μM) for 24 hours were cultured in 13C₆-glucose for 4 hours. m+5 R5P was detected. Experiment 6: CD8⁺ T_m cells were treated with or without 5% 1,6-hexanediol (1,6-HD) for 10 minutes and then cultured in 13C₆-glucose for 4 hours. m+5 R5P was detected. Experiment 7: Glycogen was isolated and dissolved from CD8⁺ T_m cells. R5P from cytosol and glycogen fractions was measured. Experiment 8: CD8⁺ T_m cells pretreated with glucose-6-phosphate isomerase inhibitor (GPI, 50 μM) for 12 hours were electroporated with 13C₆-glucose-6-phosphate (13C₆-G6P) and cultured for 4 hours. m+5 R5P was analyzed. Experiment 9: C57BL/6 mice were subcutaneously inoculated with 1×10⁶ Lewis lung carcinoma expressing ovalbumin (LLC-OVA) cells. Eight days later, mice were transferred with or without OT-I T cells and injected intraperitoneally with or without CD8α-targeted G1P-NPs (50 μg/kg) every two days. Mice were fasted overnight and then infused with 13C₆-glucose (12.5 mg/kg/min) via the tail vein for 4 hours. m+5 R5P was detected in ovalbumin (OVA)-specific CD8⁺ T_m cells from lymph nodes (LNs) and tumor-infiltrating macrophages. Experiment 10: CD8⁺ T_m cells were induced by interleukin-15 (IL-15) and cultured in 13C₆-glucose for 7 days, followed by hydrochloric acid treatment. The released m+6 labeled glucose was measured. Experiment 11: CD8⁺ T_m cells cultured in 13C₆-glucose were pretreated with GPI (50 μM) for 12 hours and then switched to 12C-glucose for 2 or 4 hours. m+5 labeled R5P was detected. Experiment 12: sgCtrl or glycogen synthase 1 (sgGys1) CD8⁺ T_m cells cultured in 13C₆-glucose were switched to 12C-glucose for 2 or 4 hours. m+5 labeled R5P was detected. Experiment 13: sgCtrl or sgGys1 CD8⁺ T_m cells or immortalized bone marrow-derived macrophages (iBMDM) were cultured in 13C₆-glucose for 4 hours. m+5 labeled R5P was detected. Experiment 14: CD8⁺ T_m cells pretreated with GPI (50 μM) for 12 hours were treated with G1P-NPs (5 μM) for 24 hours. R5P and S7P levels were measured. Experiment 15: sgCtrl or phosphoglucomutase 1 (sgPgm1) CD8⁺ T_m cells or iBMDMs were treated with glucose-6-phosphate-loaded nanoparticles (G6P-NPs, 5 μM) for 24 hours. R5P and S7P levels were measured. Experiment 16: CD8⁺ T_m cells cultured in 13C₆-glucose for 7 days were electroporated with a pcDNA-mouse-glucose-6-phosphate dehydrogenase-Flag (pcDNA-m-G6PD-Flag) plasmid. Cells were then treated with or without GPI (50 μM) for 12 hours and switched to 12C-glucose medium for 2 hours. After washing with phosphate-buffered saline (PBS), cells were crosslinked by ultraviolet C (UVC, 254 nm) at 0.3 J/cm² and lysed. Immunoprecipitation was performed using anti-Flag magnetic beads. m+6 and m+0 G1P bound to beads were detected. Experiment 17: iBMDMs pretreated with G1P-NPs (5 μM) for 24 hours were cultured in 13C₆-glucose for 4 hours. m+5 labeled R5P was detected. Experiment 18: Wild-type G6PD (G6PDWT) or knock-in G6PDD421A CD8⁺ T_m cells were cultured in 13C₆-glucose for 4 hours. m+5 labeled R5P was detected. Experiment 19: CD8⁺ T_m cells pretreated with GPI (50 μM) for 12 hours were cultured in 13C₆-glucose for 2 hours. m+6 labeled uridine diphosphate glucose (UDPG) was detected. Experiment 20: iBMDMs pretreated with GPI (50 μM) for 12 hours were electroporated with 13C₆-G6P for 4 hours. m+5 R5P was analyzed. Experiment 21: CD8⁺ T_m cells or iBMDMs pretreated with 5% 1,6-HD for 10 minutes were electroporated with 13C₆-G6P for 4 hours. m+5 R5P was analyzed. |
| Treatment Protocol Filename: | BoHuang_Lab_C13_Extraction_and_Analysis_Protocol.pdf |
Sample Preparation:
| Sampleprep ID: | SP004055 |
| Sampleprep Summary: | For metabolite analysis, cells were washed twice with ice-cold phosphate-buffered saline (PBS) and extracted with ice-cold 80% methanol. The cell suspension was subjected to three freeze-thaw cycles using liquid nitrogen to ensure complete lysis. After centrifugation at 12,000 × g for 10 minutes at 4 °C, the supernatant containing metabolites was transferred to a new tube and stored at −80 °C until further analysis. |
| Sampleprep Protocol Filename: | BoHuang_Lab_C13_Extraction_and_Analysis_Protocol.pdf |
| Processing Storage Conditions: | On ice |
| Extraction Method: | Cells were washed twice with ice-cold PBS and metabolites were extracted with ice-cold 80% methanol. |
| Extract Storage: | -80℃ |
Chromatography:
| Chromatography ID: | CH004875 |
| Chromatography Summary: | Solvent A: 20 mM ammonium acetate and 15 mM ammonium hydroxide in water with 3% acetonitrile, pH 9.0; Solvent B: acetonitrile |
| Methods Filename: | BoHuang_Lab_C13_Extraction_and_Analysis_Protocol.pdf |
| Instrument Name: | Thermo Vanquish |
| Column Name: | Waters Xbridge Amide (100 × 2.1mm, 3.5um) |
| Column Temperature: | 35 |
| Flow Gradient: | 0 min, 85% B; 1.5 min, 85% B, 5.5 min, 30% B; 8 min, 30% B, 10 min, 85% B, and 12 min, 85% B |
| Flow Rate: | 0.2 mL/min |
| Solvent A: | 100% water/3% acetonitrile; 20 mM ammonium acetate; 15 mM ammonium hydroxide |
| Solvent B: | 100% acetonitrile |
| Chromatography Type: | HILIC |
Analysis:
| Analysis ID: | AN006427 |
| Analysis Type: | MS |
| Chromatography ID: | CH004875 |
| Num Factors: | 60 |
| Num Metabolites: | 13 |
| Units: | Peak area |