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| 1 | How to overcome ATP-binding cassette drug efflux transporter-mediated drug resistance?显示文摘P-glycoprotein(ABCB1),multidrug resistance protein-1(ABCC1)and breast cancer resistance protein(ABCG2)belong to the ATP-binding cassette(ABC)superfamily of proteins that play an important physiological role in protection of the body from toxic xenobiotics and endogenous metabolites.Beyond this,these transporters determine the toxicity profile of many drugs,and confer multidrug resistance(MDR)in cancer cells associated with a poor treatment outcome of cancer patients.It has long been hypothesized that inhibition of ABC drug efflux transporters will increase drug accumulation and thereby overcome MDR,but until now no approved inhibitor of these transporters is available in the clinic.In this review we present molecular strategies to overcome this type of drug resistance and discuss for each of these strategies their promising value or indicate underlying reasons for their limited success. | Adrian C.Jaramillo Farah Al Saig Jacqueline Cloos Gerrit Jansen Godefridus J.Peters | 2018 | Cancer Drug Resistance2018，1，1： | 3 |
| 2 | In Silico Analysis of Kinase Expression Identifies WEE1 as a Gatekeeper against Mitotic Catastrophe in Glioblastoma显示文摘 | Shahryar E. Mir Philip C. De Witt Hamer Przemek M. Krawczyk Leonora Balaj An Claes Johanna M. Niers Angela A.G. Van Tilborg Aeilko H. Zwinderman Dirk Geerts Gertjan J.L. Kaspers W. Peter Vandertop Jacqueline Cloos Bakhos A. Tannous Pieter Wesseling Jacob | 2010 | Cancer Cell2010，，3： | 1 |
| 3 | Characteristics of leukemic stem cells in acute leukemia and potential targeted therapies for their specific eradication显示文摘In acute myeloid leukemia(AML),a small cell population that contains stem cell features such as lack of differentiation,self-renewal potential,and drug resistance,can be identified.These so-called leukemic stem cells(LSCs)are thought to be responsible for relapse initiation after initial treatment leading to successful eradication of the bulk AML cell population.Since many studies have aimed to characterize and eliminate LSCs to prevent relapse and increase survival rates of patients,LSCs are one of the best characterized cancer stem cells.The specific elimination of LSCs,while sparing the healthy normal hematopoietic stem cells(HSCs),is one of the major challenges in the treatment of leukemia.This review focuses on several surface markers and intracellular transcription factors that can distinguish AML LSCs from HSCs and,therefore,specifically eliminate these stem cell-like leukemic cells.Moreover,previous and ongoing clinical trials of acute leukemia patients treated with therapies targeting these markers are discussed.In contrast to knowledge on LSCs in AML,insight into LSCs in acute lymphoid leukemia(ALL)is limited.This review therefore also addresses the latest insight into LSCs in ALL. | Quinty Hansen Costa Bachas Linda Smit Jacqueline Cloos | 2022 | Cancer Drug Resistance2022，5，2： | 0 |
| 4 | Statins markedly potentiate aminopeptidase inhibitor activity against(drug-resistant)human acute myeloid leukemia cells显示文摘Aim: This study aimed to decipher the molecular mechanism underlying the synergistic effect of inhibitors of the mevalonate-cholesterol pathway (i.e., statins) and aminopeptidase inhibitors (APis) on APi-sensitive and -resistant acute myeloid leukemia (AML) cells.Methods: U937 cells and their sublines with low and high levels of acquired resistance to (6S)-[(R)-2-((S)-Hydroxy-hydroxycarbamoyl-methoxy-methyl)-4-methyl-pentanoylamino]-3,3 dimethyl-butyric acid cyclopentyl ester (CHR2863), an APi prodrug, served as main AML cell line models. Drug combination effects were assessed with CHR2863 and in vitro non-toxic concentrations of various statins upon cell growth inhibition, cell cycle effects, and apoptosis induction. Mechanistic studies involved analysis of Rheb prenylation required for mTOR activation.Results: A strong synergy of CHR2863 with the statins simvastatin, fluvastatin, lovastatin, and pravastatin was demonstrated in U937 cells and two CHR2863-resistant sublines. This potent synergy between simvastatin and CHR2863 was also observed with a series of other human AML cell lines (e.g., THP1, MV4-11, and KG1), but not with acute lymphocytic leukemia or multiple solid tumor cell lines. This synergistic activity was: (i) specific for APis (e.g., CHR2863 and Bestatin), rather than for other cytotoxic agents;and (ii) corroborated by enhanced induction of apoptosis and cell cycle arrest which increased the sub-G1 fraction. Consistently, statin potentiation of CHR2863 activity was abrogated by co-administration of mevalonate and/or farnesyl pyrophosphate, suggesting the involvement of protein prenylation;this was experimentally confirmed by impaired Rheb prenylation by simvastatin.Conclusion: These novel findings suggest that the combined inhibitory effect of impaired Rheb prenylation and CHR2863-dependent mTOR inhibition instigates a potent synergistic inhibition of statins and APis on human AML cells. | Gerrit Jansen Marjon Al Yehuda G.Assaraf Sarah Kammerer Johan van Meerloo Gert J.Ossenkoppele Jacqueline Cloos Godefridus J.Peters | 2023 | Cancer Drug Resistance2023，6，3： | 0 |
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