{"doi":"10.1007/s002800050654","title":"Resistance to paclitaxel mediated by P-glycoprotein can be modulated by changes in the schedule of administration","abstract":null,"journal":"Cancer Chemotherapy and Pharmacology","year":1997,"id":599542,"datarank":0.5375278407684165,"base_score":3.58351893845611,"endowment":3.58351893845611,"self_citation_contribution":0.5375278407684165,"citation_network_contribution":0.0,"self_endowment_contribution":0.5375278407684165,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":35,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":351217,"name":"Stefania Scala","orcid":"0000-0001-9524-2616","position":1,"is_corresponding":false},{"id":739297,"name":"Anne Monks","orcid":null,"position":2,"is_corresponding":false},{"id":739295,"name":"Curtis Hose","orcid":null,"position":3,"is_corresponding":false},{"id":1536521,"name":"Susan Bates","orcid":null,"position":4,"is_corresponding":false},{"id":1536523,"name":"T. Fojo","orcid":null,"position":5,"is_corresponding":false},{"id":1536517,"name":"Zhirong Zhan","orcid":null,"position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"resolved":true,"title":"Resistance to paclitaxel mediated by P-glycoprotein can be modulated by changes in the schedule of administration","abstract":"<h4>Purpose</h4>Increasing use of paclitaxel in clinical oncology has stimulated interest in its mechanisms of resistance and ways to overcome these. Studies were performed with paclitaxel to determine the role of P-glycoprotein in drug sensitivity, and the effect of schedule on relative resistance. We have previously reported that prolonged exposure to P-glycoprotein substrates decreases relative resistance in multidrug resistant cells.<h4>Methods</h4>Using both unselected and drug-selected cell lines, cross-resistance and cytotoxicity reversal studies using cyclosporin A were performed. In multidrug-resistant cells, cross-resistance was evaluated after 3-, 24-, and 96-h exposures to paclitaxel.<h4>Results</h4>Cross-resistance to paclitaxel in P-glycoprotein-expressing sublines was shown to be comparable to that of other drugs transported by P-glycoprotein. Sensitivity to paclitaxel could be modulated by cyclosporin A in unselected cell lines expressing P-glycoprotein and not in P-glycoprotein-negative cell lines. Resistance to paclitaxel was reduced tenfold by increasing the duration of exposure in P-glycoprotein-expressing cells. This effect was not observed in a paclitaxel-resistant cell line which does not express P-glycoprotein.<h4>Conclusions</h4>These studies extend observations on the schedule dependence of paclitaxel cytotoxicity and the role of P-glycoprotein in mediating paclitaxel sensitivity. The schedule dependence of relative resistance suggests that infusional paclitaxel may help in overcoming P-glycoprotein-mediated resistance.","is_dataset_classified":null,"base_score":3.58351893845611,"endowment":3.58351893845611,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"9219509","pmcid":null,"openalex_id":"https://openalex.org/W1978937316","authors":[],"funders":[],"total_grants":0,"fwci":0.7191,"citation_percentile":0.69447024,"influential_citations":0,"citation_trend":[{"year":2012,"count":3},{"year":2017,"count":1},{"year":2018,"count":1},{"year":2021,"count":1},{"year":2023,"count":2},{"year":2024,"count":1}],"oa_status":"closed","license":"http://www.springer.com/tdm","oa_locations":[{"url":"http://link.springer.com/content/pdf/10.1007/s002800050654.pdf","host_type":"publisher"},{"url":"http://link.springer.com/article/10.1007/s002800050654/fulltext.html","host_type":"publisher"},{"url":"http://link.springer.com/content/pdf/10.1007/s002800050654","host_type":"publisher"},{"url":"https://doi.org/10.1007/s002800050654","host_type":"journal"},{"url":"https://pubmed.ncbi.nlm.nih.gov/9219509","host_type":"repository"}],"fields_of_study":["Drug Transport and Resistance Mechanisms","Cancer Treatment and Pharmacology","Glycosylation and Glycoproteins Research","ATP Binding Cassette Transporter, Subfamily B, Member 1","Antineoplastic Agents, Phytogenic","Breast Neoplasms","Carcinoma","Cell Death","Colonic Neoplasms","Drug Administration Schedule","Drug Resistance, Multiple","Drug Resistance, Neoplasm","Female","Humans","Ovarian Neoplasms","Paclitaxel","Tumor Cells, Cultured"],"mesh_terms":["Antineoplastic Agents, Phytogenic","Breast Neoplasms","Carcinoma","Colonic Neoplasms","Drug Administration Schedule","Female","Humans","Ovarian Neoplasms","Tumor Cells, Cultured","Cell Death","Paclitaxel","Drug Resistance, Multiple","Drug Resistance, Neoplasm","ATP Binding Cassette Transporter, Subfamily B, Member 1"],"keywords":["Paclitaxel","P-glycoprotein","Cytotoxicity","Glycoprotein","Pharmacology","Drug resistance","Cell culture","Multiple drug resistance","Medicine","Chemotherapy","Cross-resistance","Cancer research","Immunology","Internal medicine","Chemistry","Biology","In vitro","Molecular biology","Biochemistry","Genetics","Virology"],"sdg_mappings":[{"sdg_number":0,"sdg_label":"Zero hunger"}],"linked_datasets":[],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-07-29T10:37:24.438741Z","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,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}