{"doi":"10.1111/j.1600-0854.2007.00686.x","title":"SNX1 Defines an Early Endosomal Recycling Exit for Sortilin and Mannose 6‐Phosphate Receptors","abstract":"<jats:p> <jats:bold>Mannose‐6‐phosphate receptors (MPRs) transport lysosomal hydrolases from the <jats:italic>trans</jats:italic> Golgi network (TGN) to endosomes. Recently, the multi‐ligand receptor sortilin has also been implicated in this transport, but the transport carriers involved herein have not been identified. By quantitative immuno‐electron microscopy, we localized endogenous sortilin of HepG2 cells predominantly to the TGN and endosomes. In the TGN, sortilin colocalized with MPRs in the same clathrin‐coated vesicles. In endosomes, sortilin and MPRs concentrated in sorting nexin 1 (SNX1)‐positive buds and vesicles. SNX1 depletion by small interfering RNA resulted in decreased pools of sortilin in the TGN and an increase in lysosomal degradation. These data indicate that sortilin and MPRs recycle to the TGN in SNX1‐dependent carriers, which we named endosome‐to‐TGN transport carriers (ETCs). Notably, ETCs emerge from early endosomes (EE), lack recycling plasma membrane proteins and by three‐dimensional electron tomography exhibit unique structural features. Hence, ETCs are distinct from hitherto described EE‐derived membranes involved in recycling. Our data emphasize an important role of EEs in recycling to the TGN and indicate that different, specialized exit events occur on the same EE vacuole.</jats:bold> </jats:p>","journal":"Traffic","year":2008,"id":24174,"datarank":5.59717931031596,"base_score":5.1298987149230735,"endowment":5.1298987149230735,"self_citation_contribution":0.7694848072384611,"citation_network_contribution":4.827694503077499,"self_endowment_contribution":0.7694848072384611,"citer_contribution":4.827694503077499,"corpus_percentile":null,"corpus_rank":null,"citation_count":168,"citer_count":125,"citers_with_citation_signal":113,"citers_with_endowment":113,"datacite_reuse_total":2,"is_dataset":false,"is_dataset_confidence":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":145434,"name":"Miriam V. Bujny","orcid":null,"position":1,"is_corresponding":false},{"id":145943,"name":"Dagmar Zeuschner","orcid":null,"position":2,"is_corresponding":false},{"id":145944,"name":"Willie J. C. Geerts","orcid":null,"position":3,"is_corresponding":false},{"id":145945,"name":"Janice Griffith","orcid":null,"position":4,"is_corresponding":false},{"id":145946,"name":"Claus M. Petersen","orcid":null,"position":5,"is_corresponding":false},{"id":145947,"name":"Pete J. Cullen","orcid":null,"position":6,"is_corresponding":false},{"id":145948,"name":"Judith Klumperman","orcid":null,"position":7,"is_corresponding":false},{"id":145949,"name":"Hans J. Geuze","orcid":null,"position":8,"is_corresponding":false},{"id":121771,"name":"Muriel Mari","orcid":null,"position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"base_score":5.1298987149230735,"endowment":5.1298987149230735,"datacite_reuse_total":2,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"18088323","pmcid":null,"openalex_id":"https://openalex.org/W2016203088","authors":[],"funders":[],"total_grants":0,"fwci":5.5281,"citation_percentile":0.96586716,"influential_citations":8,"citation_trend":[{"year":2012,"count":17},{"year":2013,"count":11},{"year":2014,"count":8},{"year":2015,"count":7},{"year":2016,"count":6},{"year":2017,"count":6},{"year":2018,"count":7},{"year":2019,"count":6},{"year":2020,"count":5},{"year":2021,"count":8},{"year":2022,"count":5},{"year":2023,"count":8},{"year":2024,"count":10},{"year":2025,"count":3},{"year":2026,"count":2}],"oa_status":"bronze","license":"http://onlinelibrary.wiley.com/termsAndConditions#vor","oa_locations":[{"url":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1111/j.1600-0854.2007.00686.x","host_type":"journal"},{"url":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1111/j.1600-0854.2007.00686.x","host_type":"BRONZE"},{"url":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1111/j.1600-0854.2007.00686.x","host_type":"publisher"},{"url":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1600-0854.2007.00686.x","host_type":"publisher"},{"url":"https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1600-0854.2007.00686.x","host_type":"publisher"},{"url":"https://doi.org/10.1111/j.1600-0854.2007.00686.x","host_type":"journal"},{"url":"https://pubmed.ncbi.nlm.nih.gov/18088323","host_type":"repository"},{"url":"https://research-information.bris.ac.uk/en/publications/99a05eb7-0d39-4ff5-a23f-d40702ae8152","host_type":"repository"},{"url":"https://pure.au.dk/portal/en/publications/532ce989-da23-4102-a2e2-765bd8e4cdac","host_type":""}],"fields_of_study":["Cellular transport and secretion","Pancreatic function and diabetes","Lipid Membrane Structure and Behavior","Biology","Medicine","Adaptor Proteins, Vesicular Transport","Base Sequence","Cell Line","Endosomes","Humans","Membrane Glycoproteins","Microscopy, Immunoelectron","Models, Biological","Nerve Tissue Proteins","Protein Transport","RNA Interference","RNA, Small Interfering","Receptor, IGF Type 2","Sorting Nexins","Subcellular Fractions","Vesicular Transport Proteins","trans-Golgi Network","Sortilin"],"mesh_terms":["Sortilin","Base Sequence","Cell Line","Humans","Membrane Glycoproteins","Models, Biological","Nerve Tissue Proteins","Endosomes","Subcellular Fractions","Microscopy, Immunoelectron","Receptor, IGF Type 2","Protein Transport","trans-Golgi Network","Vesicular Transport Proteins","Adaptor Proteins, Vesicular Transport","RNA Interference","RNA, Small Interfering","Sorting Nexins"],"keywords":["Endosome","Retromer","Cell biology","Biology","Vesicular Transport Proteins","Transport protein","Mannose 6-phosphate","Lysosome","Golgi apparatus","Mannose 6-phosphate receptor","Mannose","Sorting nexin","Receptor","Biochemistry","Vacuolar protein sorting","Enzyme","Intracellular"],"sdg_mappings":[{"sdg_number":0,"sdg_label":"Clean water and sanitation"}],"linked_datasets":[{"doi":"10.6084/m9.figshare.25622020.v1","title":"Additional file 1 of Golgi-associated retrograde protein (GARP) complex-dependent endosomes to trans Golgi network retrograde trafficking is controlled by Rab4b","publisher":"figshare","resource_type":"JournalArticle"},{"doi":"10.6084/m9.figshare.25622020","title":"Additional file 1 of Golgi-associated retrograde protein (GARP) complex-dependent endosomes to trans Golgi network retrograde trafficking is controlled by Rab4b","publisher":"figshare","resource_type":"JournalArticle"}],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-06-07T21:45:59.143745Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}