{"id":90820,"topic":"peptides","source":"Medical Xpress","title":"Tumor bacteria inspire peptide that starves prostate cancer cells in preclinical tests - Medical Xpress","url":"https://medicalxpress.com/news/2026-04-tumor-bacteria-peptide-starves-prostate.html","url_hash":"a187a1bbfb49f7585445641705a3bb206123cd51","author":"","summary":"<a href=\"https://news.google.com/rss/articles/CBMiiwFBVV95cUxPSWJtdFg4VWRudjBzemgyMS1UUkxfRDdtamluemZlMXJmSkhiTDBpM0R6S3JfODFuVnVXWHB5UUtybkp5bWN3TzI1WmZFNWphTnk3dDl3UnJId0t0c2xuV2ZQaUxJa3B5cGN2ZGNKREhmTm9jMDNMN2ZGOXRHYXZWT0lHUEdzWU5pdEE0?oc=5\" target=\"_blank\">Tumor bacteria inspire peptide that starves prostate cancer cells in preclinical tests</a>&nbsp;&nbsp;<font color=\"#6f6f6f\">Medical Xpress</font>","content":null,"image_url":null,"lang":"en","published_at":"2026-04-29T07:00:00+00:00","fetched_at":"2026-09-26T14:15:09+00:00","status":"read","starred":0,"extract_state":"failed","summary_auto":null,"cluster_id":null,"extract_retries":2,"extract_error":"http_403","contract_version":"news_item.v1","format_contract_version":"news_item_formats.v1","dedup_url":"https://medicalxpress.com/news/2026-04-tumor-bacteria-peptide-starves-prostate.html","quality_profile":{"profile_version":"extraction_quality.v2","bucket":"failed","confidence":0.0,"failure_kind":"http","retryable":false,"retry_after_attempts":0,"reason":"Low confidence: HTTP extraction failure (http_403).","operator_guidance":{"severity":"action_required","recommended_action":"manual_review","next_step":"Open diagnostics and review the original source manually before use.","operator_label":"Manual review","can_retry":false,"can_use_summary":false,"diagnostics_required":true},"content_depth":{"contract_version":"content_depth.v1","category":"summary_only","label":"Summary only","has_full_text":false,"has_summary":true,"content_length":0,"summary_length":406,"usable_text_length":406,"source_field":"summary"},"legacy_collapsed":false,"signals":{"extract_state":"failed","extract_error":"http_403","extract_retries":2,"content_length":0,"summary_length":406}},"news_item":{"id":90820,"canonical_url":"https://medicalxpress.com/news/2026-04-tumor-bacteria-peptide-starves-prostate.html","source_url":"https://medicalxpress.com/news/2026-04-tumor-bacteria-peptide-starves-prostate.html","title":"Tumor bacteria inspire peptide that starves prostate cancer cells in preclinical tests - 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