ArticleAnalytical chemistry2022
Microanalysis of Brain Angiotensin Peptides Using Ultrasensitive Capillary Electrophoresis Trapped Ion Mobility Mass Spectrometry.
Article in Analytical chemistry, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
12 citing papers in PubMed, 1 synthesis or guideline pooled it, 21 citations in OpenAlex.
- Initial recommendations for performing, benchmarking and reporting single-cell proteomics experiments.Nature methods · 2023Guideline
- Rapid Chiral Analysis of Drugs with Multiple Stereocenters via High-Resolution Ion Mobility.Analytical chemistry · 2026Article
- Aspiration Patch Proteomics Enables CE-ESI-MS Proteotyping of Identified Single Neurons in Intact Brain Tissue.Analytical chemistry · 2026Article
- Online Coupling of Acoustic Droplet Levitation with Capillary Electrophoresis Mass Spectrometry Enables Midair Enrichment for Improved Proteomic Sensitivity.Analytical chemistry · 2025Article
- A Comprehensive Review on Capillary Electrophoresis-Mass Spectrometry in Advancing Biomolecular Research.Electrophoresis · 2025Review
- SPE-CZE-MS Quantifies Zeptomole Amounts of Phosphorylated Peptides.Journal of proteome research · 2025Article
- Development and Validation of RoboCap, a Robotic Capillary Platform to Automate Capillary Electrophoresis Mass Spectrometry En Route to High-Throughput Single-Cell Proteomics.Analytical chemistry · 2024Article
- Microanalytical Mass Spectrometry with Super-Resolution Microscopy Reveals a Proteome Transition During Development of the Brain's Circadian Pacemaker.Analytical chemistry · 2023Article
- [Annual review of capillary electrophoresis technology in 2022].Se pu = Chinese journal of chromatography · 2023Review
- Electrochemically Etched Tapered-Tip Stainless-Steel Electrospray-Ionization Emitters for Capillary Electrophoresis-Mass Spectrometry.Journal of proteome research · 2023Article
- Developments in Trapped Ion Mobility Mass Spectrometry to Probe the Early Stages of Peptide Aggregation.Journal of the American Society for Mass Spectrometry · 2023Article
- Biological mass spectrometry enables spatiotemporal 'omics: From tissues to cells to organelles.Mass spectrometry reviewsReview
Corrections and comments
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Authors and funding
7 authors at 2 institutions in 1 country.
Funding
Abstract
While the role of the renin-angiotensin system (RAS) in peripheral circulation is well characterized, we still lack an in-depth understanding of its role within the brain. This knowledge gap is sustained by lacking technologies for trace-level angiotensin detection throughout tissues, such as the brain. To provide a bridging solution, we enhanced capillary electrophoresis (CE) nanoflow electrospray ionization (ESI) with large-volume sample stacking and employed trapped ion mobility time-of-flight (timsTOF) tandem HRMS detection. A dynamic pH junction helped stack approximately 10 times more of the sample than optimal using the field-amplified reference. In conjunction, the efficiency of ion generation was maximized by a cone-jet nanospray on a low sheath-flow tapered-tip nano-electrospray emitter. The platform provided additional peptide-dependent information, the collision cross section, to filter chemical noise and improve sequence identification and detection limits. The lower limit of detection reached sub-picomolar or ∼30 zmol (∼18,000 copies) level. All nine targeted angiotensin peptides in mouse tissue samples were detectable and quantifiable from the paraventricular nucleus (PVN) of the hypothalamus even after removal of circulatory blood components (perfusion). We anticipate CE-ESI with timsTOF HRMS to be broadly applicable for the ultrasensitive detection of brain peptidomes in pursuit of a better understanding of the brain.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.