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To enable systematic investigation, we developed a robust in situ system that mimics HIV-1 nuclear import in a near-native context using isolated HIV-1 virus like particles (VLP) cores and permeabilized CD4\u2009+\u2009T lymphocyte (CEM) cells. This approach supports docking and translocation of abundant viral cores through nuclear pores into the nucleus. For high-resolution visualization, we implemented an integrated correlative approach to guide cryo-focused ion beam (cryo-FIB) milling and cryo-electron tomography (cryo-ET) imaging, enabling precise targeting and structural characterization of individual nuclear import events. Using this workflow, we visualized 510 HIV-1 VLP cores at distinct stages of nuclear import, capturing key snapshots of the full progression of nuclear import. Subsequent statistical and structural analyses allow classification of core morphologies and identification of translocation-associated remodeling in nuclear pores. This work provides a methodological foundation for dissecting HIV-1 and potentially other viruses nuclear import processes and post-entry events in a controlled and quantitative manner.<\/jats:p>","DOI":"10.1038\/s44319-025-00567-6","type":"journal-article","created":{"date-parts":[[2025,8,29]],"date-time":"2025-08-29T08:19:20Z","timestamp":1756455560000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Direct visualization of HIV-1 core nuclear import and its interplay with the nuclear pore"],"prefix":"10.1038","volume":"26","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6701-144X","authenticated-orcid":false,"given":"Zhen","family":"Hou","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-5275-1633","authenticated-orcid":false,"given":"Stanley","family":"Fronik","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0278-0771","authenticated-orcid":false,"given":"Yao","family":"Shen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Long","family":"Chen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2240-093X","authenticated-orcid":false,"given":"Christopher","family":"Thompson","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sarah","family":"Neumann","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1803-691X","authenticated-orcid":false,"given":"Peijun","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2025,8,29]]},"reference":[{"key":"567_CR90","doi-asserted-by":"crossref","unstructured":"Adachi A, Gendelman HE, Koenig S, Folks T, Willey R, Rabson A, Martin MA. 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