Evidence map›Paper›PMID 41707887›Full record

ArticleMolecules and cells2026

A cryo-CLEM-guided workflow for quantitative assessment and optimization of cryo-ET specimen quality.

Minjung Kim, Junsun Park, Soung-Hun Roh

Abstract read
In one paragraph

Article in Molecules and cells, 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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2 · The registry

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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.

Minjung KimSchool of Biological Sciences, Seoul National University, Seoul 08826, Republic of Korea.
Junsun ParkInstitute of Molecular Biology and Genetics, Seoul National University, Seoul 08826, Republic of Korea. Electronic address: junsun873@snu.ac.kr.
Soung-Hun RohSchool of Biological Sciences, Seoul National University, Seoul 08826, Republic of Korea; Institute of Molecular Biology and Genetics, Seoul National University, Seoul 08826, Republic of Korea. Electronic address: shroh@snu.ac.kr.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cryo-correlative light and electron microscopy (cryo-CLEM) is an essential technique for precisely targeting regions of interest in vitrified biological specimens for in situ cellular cryo-electron tomography (cryo-ET). Despite its widespread use, the potential of cryo-CLEM remains underexploited because its imaging performance under cryogenic conditions has not been characterized. We evaluated the imaging capabilities of 2 commercially available cryo-CLEM systems-a stand-alone Leica EM cryo-CLEM microscope and the integrated Thermo Fisher Scientific iFLM coupled to a cryo-focused ion beam platform-by quantifying their spatial resolution and signal-to-noise ratio using vitrified cellular specimens expressing green fluorescent protein (GFP)-labeled proteins. The EM cryo-CLEM setup provided a higher signal-to-noise ratio and faster acquisition via tile imaging, whereas the iFLM offered a wider field of view, revealing complementary strengths between the 2 instruments. Furthermore, we established a quantitative correlation between fluorescence intensity and lamella thickness, demonstrating that cryo-CLEM imaging can serve as a practical indicator of lamella quality during early specimen preparation, before cryo-ET data collection. Collectively, our results show that cryo-CLEM not only facilitates precise targeting but also provides quantitative feedback for optimizing lamella quality, thereby streamlining the overall cryo-ET workflow.

Indexed as

Cryoelectron MicroscopyElectron Microscope TomographyAnimalsGreen Fluorescent ProteinsHumansSignal-To-Noise RatioWorkflowGreen Fluorescent ProteinsComplementary cryo-correlative light and electron microscopy workflowCryo-correlative light and electron microscopyCryo-electron tomographyQuantitative lamella optimizationResolution performance

Identifiers

PMID41707887
PMCPMC12997329

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LicenceCC BY
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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.