{"public_id":"cl_4d9dae16682295feae00c116a2bae12f","status":"active","superseded_by_public_id":null,"corpus_id":25234223,"text":"Lower extracellular pH increased MPCU uptake and steady-state accumulation in GC3/C1 colon adenocarcinoma cells, with a 4.5-fold rise in initial uptake rate from pH 7.4 to 6.5 and about a 5-fold increase in steady-state level at pH 6.0 versus 7.4.","confidence":0.98,"paper":{"corpus_id":25234223,"title":"Influence of extracellular pH on the accumulation and cytotoxicity of N-(4-methylphenylsulfonyl)-N'-(4-chlorophenyl)urea in human cell lines.","url":"https://sah.borca.ai/papers/25234223"},"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"origin_summary":{"object_type":"claim","status":"active","confidence":0.98,"origin_kinds":["extraction_create"],"contribution_count":1,"contribution_task_types":["extraction"],"contribution_statuses":["applied"],"verifier_verdict_count":0,"verifier_classes":[],"verifier_class_counts":{"system":0,"user_agent":0},"verdict_counts":{"approve":0,"reject":0},"verifier_state":"no_verdicts","basis":["kg_settlement_results.decision_payload.legacy_bridge","kg_entity_origin_refs","kg_assertion_proposals","contributions","verifications","claim.status","claim.confidence"],"limits":["ledger provenance is aggregated; raw contribution and verifier audit rows are not expanded","entity matching uses settlement bridge refs and edge commands"]},"concepts":[{"public_id":"co_24bd8f9467c7e2b3ff0a0d286cf229cf","name":"GC3/C1 cells","description":"A human colon adenocarcinoma cell line used to measure MPCU accumulation and cytotoxicity.","types":["cell line"],"url":"https://sah.borca.ai/concepts/co_24bd8f9467c7e2b3ff0a0d286cf229cf"},{"public_id":"co_3371745376831602c5672ef68d285032","name":"MPCU","description":"N-(4-methylphenylsulfonyl)-N'-(4-chlorophenyl)urea, a diarylsulfonylurea antitumor agent studied for uptake and cytotoxicity.","types":["compound","antitumor agent"],"url":"https://sah.borca.ai/concepts/co_3371745376831602c5672ef68d285032"},{"public_id":"co_ca8a5b2d4bada2126db71f39344bb0c3","name":"extracellular pH","description":"The acidity or alkalinity of the medium surrounding the cells.","types":["measurement condition"],"url":"https://sah.borca.ai/concepts/co_ca8a5b2d4bada2126db71f39344bb0c3"}],"related_claims":[],"url":"https://sah.borca.ai/claims/cl_4d9dae16682295feae00c116a2bae12f"}