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Engineered cells do not prove which transporter dominates human blood-brain-barrier flux or a clinical meal interaction.","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"nutrient_topic","value_text":"L-Theanine research collection; topical membership is not evidence of a direct dietary effect.","comparator":null,"unit":null,"notes":"","entity":{"slug":"theanine","display_name":"L-Theanine","entity_type_key":"small_molecule"}},{"dimension":"organism","value_text":"Mammalian cell lines; human LAT1 and LAT2 expressed in mouse S2 cells","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"plain_language","value_text":"Another dietary amino acid can compete at the transport step.","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"primary_references","value_text":"[theanine-p23221699] The involvement of L-type amino acid transporters in theanine transport. 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Engineered cells do not prove which transporter dominates human blood-brain-barrier flux or a clinical meal interaction.\nexposure: Radiolabeled theanine with leucine/BCH competition and sodium replacement\nevidence_span: {\"source_cache\": \"artifacts/theanine-research/23221699.abstract.txt\", \"locator\": \"Primary indexed abstract; zero-based, end-exclusive Unicode character offsets\", \"file_sha256\": \"0f79abd668759eccd12f86ec895af75dadf94f6412c29d51a2b6cfde712f9372\", \"start_char\": 0, \"end_char\": 1143, \"text_sha256\": \"0f79abd668759eccd12f86ec895af75dadf94f6412c29d51a2b6cfde712f9372\"}\n[theanine-p23221699] The involvement of L-type amino acid transporters in theanine transport. (2012). https://pubmed.ncbi.nlm.nih.gov/23221699/ DOI: 10.1271/bbb.120519","model_system":"Cell uptake and stable human-transporter expression","directness":"author_interpretation","verification_status":"source_derived_draft","notes":"Exact curation-document quotation, not publisher quotation. 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