PMID- 34981808 OWN - NLM STAT- MEDLINE DCOM- 20220202 LR - 20220318 IS - 1477-9137 (Electronic) IS - 0021-9533 (Print) IS - 0021-9533 (Linking) VI - 135 IP - 5 DP - 2022 Mar 1 TI - HDLs extract lipophilic drugs from cells. LID - 10.1242/jcs.258644 [doi] LID - jcs258644 AB - High-density lipoproteins (HDLs) prevent cell death induced by a variety of cytotoxic drugs. The underlying mechanisms are however still poorly understood. Here, we present evidence that HDLs efficiently protect cells against thapsigargin (TG), a sarco/endoplasmic reticulum (ER) Ca2+-ATPase (SERCA) inhibitor, by extracting the drug from cells. Drug efflux could also be triggered to some extent by low-density lipoproteins and serum. HDLs did not reverse the non-lethal mild ER stress response induced by low TG concentrations or by SERCA knockdown, but HDLs inhibited the toxic SERCA-independent effects mediated by high TG concentrations. HDLs could extract other lipophilic compounds, but not hydrophilic substances. This work shows that HDLs utilize their capacity of loading themselves with lipophilic compounds, akin to their ability to extract cellular cholesterol, to reduce the cell content of hydrophobic drugs. This can be beneficial if lipophilic xenobiotics are toxic but may be detrimental to the therapeutic benefit of lipophilic drugs such as glibenclamide. CI - (c) 2022. Published by The Company of Biologists Ltd. FAU - Zheng, Adi AU - Zheng A AUID- ORCID: 0000-0002-5632-1730 AD - Department of Biomedical Sciences, University of Lausanne, Bugnon 7, 1005 Lausanne, Switzerland. FAU - Dubuis, Gilles AU - Dubuis G AD - Department of Biomedical Sciences, University of Lausanne, Bugnon 7, 1005 Lausanne, Switzerland. FAU - Georgieva, Maria AU - Georgieva M AUID- ORCID: 0000-0002-4553-7894 AD - Department of Biomedical Sciences, University of Lausanne, Bugnon 7, 1005 Lausanne, Switzerland. FAU - Mendes Ferreira, Carla Susana AU - Mendes Ferreira CS AUID- ORCID: 0000-0002-2616-1940 AD - Department of Biomedical Sciences, University of Lausanne, Bugnon 7, 1005 Lausanne, Switzerland. FAU - Serulla, Marc AU - Serulla M AUID- ORCID: 0000-0002-4166-1556 AD - Department of Biomedical Sciences, University of Lausanne, Bugnon 7, 1005 Lausanne, Switzerland. FAU - Del Carmen Conde Rubio, Maria AU - Del Carmen Conde Rubio M AUID- ORCID: 0000-0002-0469-0227 AD - Department of Biomedical Sciences, University of Lausanne, Bugnon 7, 1005 Lausanne, Switzerland. FAU - Trofimenko, Evgeniya AU - Trofimenko E AUID- ORCID: 0000-0003-4910-5324 AD - Department of Biomedical Sciences, University of Lausanne, Bugnon 7, 1005 Lausanne, Switzerland. FAU - Mercier, Thomas AU - Mercier T AUID- ORCID: 0000-0003-1921-4837 AD - Laboratory of Clinical Pharmacology, Lausanne University Hospital (CHUV) and University of Lausanne, 1011 Lausanne, Switzerland. FAU - Decosterd, Laurent AU - Decosterd L AUID- ORCID: 0000-0002-9840-1325 AD - Laboratory of Clinical Pharmacology, Lausanne University Hospital (CHUV) and University of Lausanne, 1011 Lausanne, Switzerland. FAU - Widmann, Christian AU - Widmann C AUID- ORCID: 0000-0002-6881-0363 AD - Department of Biomedical Sciences, University of Lausanne, Bugnon 7, 1005 Lausanne, Switzerland. LA - eng GR - CRSII3_154420/Swiss National Science Foundation/Switzerland PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20220131 PL - England TA - J Cell Sci JT - Journal of cell science JID - 0052457 RN - 0 (Lipoproteins, HDL) RN - 0 (Pharmaceutical Preparations) RN - 67526-95-8 (Thapsigargin) RN - EC 3.6.3.8 (Sarcoplasmic Reticulum Calcium-Transporting ATPases) RN - SY7Q814VUP (Calcium) SB - IM MH - Calcium/metabolism MH - Endoplasmic Reticulum/metabolism MH - Endoplasmic Reticulum Stress MH - *Lipoproteins, HDL MH - *Pharmaceutical Preparations MH - Sarcoplasmic Reticulum Calcium-Transporting ATPases/genetics MH - Thapsigargin/pharmacology PMC - PMC8919334 OTO - NOTNLM OT - Cell death OT - Doxorubicin OT - Drug efflux OT - Glibenclamide OT - HDL OT - High-density lipoprotein OT - Rhodamine 123 OT - Staurosporine OT - Thapsigargin COIS- Competing interests The authors declare no competing or financial interests. EDAT- 2022/01/05 06:00 MHDA- 2022/02/03 06:00 PMCR- 2022/01/31 CRDT- 2022/01/04 08:38 PHST- 2021/03/12 00:00 [received] PHST- 2021/12/14 00:00 [accepted] PHST- 2022/01/05 06:00 [pubmed] PHST- 2022/02/03 06:00 [medline] PHST- 2022/01/04 08:38 [entrez] PHST- 2022/01/31 00:00 [pmc-release] AID - 273878 [pii] AID - JCS258644 [pii] AID - 10.1242/jcs.258644 [doi] PST - ppublish SO - J Cell Sci. 2022 Mar 1;135(5):jcs258644. doi: 10.1242/jcs.258644. Epub 2022 Jan 31.