Dataset Information

Stable Coordination Unlocks Ligand-accelerated Transition Metal Catalysis on Proteins

ABSTRACT: This project investigates in situ deprotection reactions catalyzed by the Ni–BCS system in MC38 cells and the subsequent impact on the immunopeptidome. Two independent MC38 cell preparations (2 × 10⁷ cells each) were pulsed with either the P2 peptide or P2 peptide followed by Ni–BCS catalyzed in situ deprotection (P2+Ni). MHC-associated peptides were analysed by Immunoprecipitation-Mass Spectrometry.

ORGANISM(S): Mus Musculus

SUBMITTER: Jie Li

PROVIDER: PXD067964 | iProX | Tue Sep 02 00:00:00 BST 2025

REPOSITORIES: iProX

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Publications

Inert Complexes Unlock Ligand-Accelerated Transition-Metal Catalysis on Proteins.

Wang Zhen Z Xiang Fengrui F Liao Xingyu X Wu Qingsong Q Jiao Jinbiao J Bi Angzhi A Liu Siyang S Wang Dan D Wang Minyan M Guo Zijian Z Li Jie P JP

Angewandte Chemie (International ed. in English) 20260128

Reactions that excel in small-molecule settings typically require metal loadings far exceeding the number of protein reaction sites (often ≥10-fold) once transplanted into proteinaceous media-conditions that are not truly "catalytic." Here, we show that biologically inert metal-ligand complexes based on bathocuproine disulfonic acid disodium salt (BCS) overcome this barrier and enable ligand-accelerated catalysis (LAC) on proteins under substoichiometric conditions. For example, Ni-BCS effects c ...[more]

PMID: 41607030

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Project description:This experiment compares the transciptional changes in antigen specific murine CD8 T cells (P14 T cells) after exposure in vivo to dendritic cells (DC) pulsed with low dose cognate peptide (1uM KAVYNFATC), high dose cognate peptide (100uM KAVYNFATC) or no antigen. Splenic dendritic cells were freshly isolated, peptide pulsed, washed and then adoptively transferred s.c. to the right footpad of C57BL/6 hosts. After 18h, freshly isolated P14 CD8 T cells were labelled with CMFDA and adoptively transferred iv. Two hours after T cell transfer, anti-L selectin antibody was given iv. At 12 and 24 hours, recipients were sacrificed and The right popliteal LN was harvested at 12 or 24h post T cell transfer and a single cell suspension was created and stained with PE CD4, B220 and CD19 (dump channel). Cells were then sorted on a FacsARIA for being non-doublets, CMFDA positive and dump channel negative. This experiment compares the transciptional changes in antigen specific murine CD8 T cells (P14 T cells) after exposure in vivo to dendritic cells (DC) pulsed with low dose cognate peptide (1uM KAVYNFATC), high dose cognate peptide (100uM KAVYNFATC) or no antigen. Splenic dendritic cells were freshly isolated, peptide pulsed, washed and then adoptively transferred s.c. to the right footpad of C57BL/6 hosts. After 18h, freshly isolated P14 CD8 T cells were labelled with CMFDA and adoptively transferred iv. Two hours after T cell transfer, anti-L selectin antibody was given iv. At 12 and 24 hours, recipients were sacrificed and The right popliteal LN was harvested at 12 or 24h post T cell transfer and a single cell suspension was created and stained with PE CD4, B220 and CD19 (dump channel). Cells were then sorted on a FacsARIA for being non-doublets, CMFDA positive and dump channel negative. The experiment was conducted for 39 samples out of which 35 passsed transcriptional quality control tests. The phenotypic distribution for the 35 samples includes: (1) high dose (100uM KAVYNFATC ) cognate peptide pulsed samples harvested at 12h post T cell transfer: 6 biological replicates (2) high dose (100uM KAVYNFATC ) cognate peptide pulsed samples harvested at 24h post T cell transfer: 7 biological replicates (3) low dose (1uM KAVYNFATC) cognate peptide pulsed samples harvested at 12h post T cell transfer: 6 biological replicates (4) low dose (1uM KAVYNFATC) cognate peptide pulsed samples harvested at 24h post T cell transfer: 9 biological replicates (5) no antigen pulsed samples harvested at 12h post T cell transfer: 3 biological replicates (6) no antigen pulsed samples harvested at 24h post T cell transfer: 4 biological replicates.

Dataset Information

Stable Coordination Unlocks Ligand-accelerated Transition Metal Catalysis on Proteins

Publications

Inert Complexes Unlock Ligand-Accelerated Transition-Metal Catalysis on Proteins.

Similar Datasets

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