Evidence mapPaperPMID 41740191Full record

ArticleJournal of proteome research2026

Targeted Quantitative Analysis of Specific Proteins in Cytosolic, Mitochondrial, and Nuclear Fractions Using PRM.

Alejandra Delgado-Sequera, Alberto Paradela, Fernando J Corrales

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Article in Journal of proteome research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

3 authors.

Alejandra Delgado-SequeraFunctional Proteomics Laboratory, National Center for Biotechnology (CNB-CSIC), Madrid 28049, Spain.
Alberto ParadelaFunctional Proteomics Laboratory, National Center for Biotechnology (CNB-CSIC), Madrid 28049, Spain.ORCID 0000-0001-6837-7056
Fernando J CorralesFunctional Proteomics Laboratory, National Center for Biotechnology (CNB-CSIC), Madrid 28049, Spain.ORCID 0000-0002-0231-5159

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Mitochondria play a central role in liver physiology by regulating key metabolic processes. Consequently, mitochondrial dysfunction is a hallmark of multiple liver diseases, including steatosis, steatohepatitis, and liver failure following hepatectomy. Subcellular fractionation is widely used to isolate mitochondria from liver cells or tissue; however, the enrichment and purity of isolated fractions are critical to ensure reliable downstream functional and proteomic analyses. Conventional validation methods, such as immunoblotting of organelle-specific markers, are limited by low throughput, restricted sensitivity, and variability. In this study, we present a targeted proteomics strategy based on parallel reaction monitoring (PRM) to quantitatively assess the enrichment of cytosolic, mitochondrial, and nuclear fractions obtained from liver samples using commercial isolation kits. PRM analyses demonstrated robust and compartment-specific enrichment in both PLC/PRF/5 cells and mouse liver tissue. In PLC/PRF/5 cells, high nuclear/cytosolic enrichment was observed for Prelamin A/C, while mitochondrial markers such as ATPase showed strong mitochondrial/cytosolic ratios. Cytosolic markers consistently displayed enrichment in the cytosolic fraction. Similar trends were observed in mouse liver tissue, confirming applicability across biological systems. Overall, these results highlight PRM as a sensitive, reproducible, and cost-effective alternative to immunodetection approaches for evaluating subcellular fraction purity, supporting high-quality mitochondrial preparations for translational hepatology studies.

Indexed as

Cell NucleusCytosolMitochondriaMitochondrial ProteinsProteomicsAnimalsCell FractionationCell LineLiverMiceMitochondria, LiverSubcellular FractionsMitochondrial Proteinslivermitochondrial enrichmentPRMsubcellular fractionationtarget proteomic

Identifiers

PMID41740191
PMCPMC13054855

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