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Letafati A, Soheili R, Norouzi M, Soleimani P, Mozhgani SH. Therapeutic approaches for HTLV-1-associated adult T-cell leukemia/lymphoma: a comprehensive review. Med Oncol 2023; 40:295. [PMID: 37689806 DOI: 10.1007/s12032-023-02166-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 08/18/2023] [Indexed: 09/11/2023]
Abstract
Adult T-cell leukemia/lymphoma (ATLL), an infrequent malignancy resultant from human T-cell lymphotropic virus type I (HTLV-1), exhibits a spectrum of phenotypes, encompassing acute, smoldering, lymphomatous, and chronic variants, each bearing distinct clinical presentations. The preponderant acute manifestation is characterized by hypercalcemia, systemic manifestations, organomegaly, and dermatological eruptions. Conversely, the chronic phenotype is typified by lymphocytosis and/or cutaneous eruptions, while smoldering ATLL assumes an asymptomatic course. Immunocompromise afflicts ATLL patients, heightening their vulnerability to opportunistic infections that frequently intricately intertwine with disease progression. Therefore, an early diagnosis is crucial to manage the disease appropriately. While conventional chemotherapeutic regimens have shown limited success, especially in acute and lymphoma types, recent studies suggest that allogeneic stem cell transplantation might enhance treatment results because it has shown promising outcomes in some patients. Novel therapeutics, such as interferon and monoclonal antibodies, have also shown promise, but more research is needed to confirm their efficacy. Moreover, the identification of biomarkers for ATLL and genetic changes in HTLV-1 infected cells has led to the development of targeted therapies that have shown remarkable success in clinical trials. These targeted therapies have the potential to offer a more personalized approach to the treatment of ATLL. The aim of our review is to elaborate on conventional and novel therapies and the efficiency of mentioned treatments.
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Affiliation(s)
- Arash Letafati
- Department of Virology, Faculty of Public Health, Tehran University of Medical Sciences, Tehran, Iran
- Research Center for Clinical Virology, Tehran University of Medical Science, Tehran, Iran
| | - Roben Soheili
- Research Center for Clinical Virology, Tehran University of Medical Science, Tehran, Iran
| | - Mehdi Norouzi
- Department of Virology, Faculty of Public Health, Tehran University of Medical Sciences, Tehran, Iran
- Research Center for Clinical Virology, Tehran University of Medical Science, Tehran, Iran
| | - Parastoo Soleimani
- Advanced Science Faculty, Tehran Medical Branch, Islamic Azad University, Tehran, Iran
| | - Sayed-Hamidreza Mozhgani
- Research Center for Clinical Virology, Tehran University of Medical Science, Tehran, Iran.
- Department of Microbiology and Virology, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran.
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2
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Rahgozar S, Moafi A, Abedi M, Entezar-E-Ghaem M, Moshtaghian J, Ghaedi K, Esmaeili A, Montazeri F. mRNA expression profile of multidrug-resistant genes in acute lymphoblastic leukemia of children, a prognostic value for ABCA3 and ABCA2. Cancer Biol Ther 2013; 15:35-41. [PMID: 24145140 DOI: 10.4161/cbt.26603] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Multidrug resistance (MDR) is an important cause of treatment failure in acute lymphoblastic leukemia (ALL). The ABC family of membrane transporters is proposed, albeit with controversy, to be involved in this process. The present study aims to investigate the mRNA expression profile of several genes of this family, including ABCA2, ABCA3, ABCB1/MDR1, MRP1/ABCC1, MRP3/ABCC3, ABCG2/BCRP, and the intracellular transporter MVP/LRP, in childhood ALL, and to evaluate their association with response to therapy. Some genes in the present research are being studied for the first time in Iran. Using quantitative real-time PCR, we evaluated 27 children with ALL at diagnosis and 15 children with normal bone marrow. The status of response to therapy was assessed one year after the onset of therapy through investigating the IgH/TCRγ gene rearrangements. Our findings indicate a considerable and direct relationship between mRNA expression levels of ABCA2, ABCA3, MDR1, and MRP1 genes and positive minimal residual disease (MRD) measured after one year of treatment. Statistical analysis revealed that expression of these genes higher than the cutoff point will raise the risk of MRD by 15-, 6.25-, 12-, and 9-fold, respectively. No relationship was found between of MVP/LRP, MRP3 and ABCG2 genes expression and ALL prognoses. Considering the direct and significant relationship between the increased expression of ABCA2, ABCA3, MDR1, and MRP1 genes and positive risk of MRD in children with ALL, evaluating the expression profile of these genes on diagnosis may identify high risk individuals and help plan a more efficient treatment strategy.
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Affiliation(s)
- Soheila Rahgozar
- Division of Cell and Molecular Biology; Department of Biology; Faculty of Science; University of Isfahan; Isfahan, Iran
| | - Alireza Moafi
- Department of Paediatric-Oncology; Sayed ol Shohada Hospital; Isfahan University of Medical Sciences; Isfahan, Iran
| | - Marjan Abedi
- Division of Cell and Molecular Biology; Department of Biology; Faculty of Science; University of Isfahan; Isfahan, Iran
| | - Mansureh Entezar-E-Ghaem
- Division of Cell and Molecular Biology; Department of Biology; Faculty of Science; University of Isfahan; Isfahan, Iran
| | - Jamal Moshtaghian
- Division of Cell and Molecular Biology; Department of Biology; Faculty of Science; University of Isfahan; Isfahan, Iran
| | - Kamran Ghaedi
- Division of Cell and Molecular Biology; Department of Biology; Faculty of Science; University of Isfahan; Isfahan, Iran
| | - Abolghasem Esmaeili
- Division of Cell and Molecular Biology; Department of Biology; Faculty of Science; University of Isfahan; Isfahan, Iran
| | - Fatemeh Montazeri
- Division of Cell and Molecular Biology; Department of Biology; Faculty of Science; University of Isfahan; Isfahan, Iran
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3
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Lopes-Rodrigues V, Seca H, Sousa D, Sousa E, Lima RT, Vasconcelos MH. The network of P-glycoprotein and microRNAs interactions. Int J Cancer 2013; 135:253-63. [PMID: 24122334 DOI: 10.1002/ijc.28500] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Accepted: 09/13/2013] [Indexed: 12/21/2022]
Abstract
Overexpression of P-glycoprotein (P-gp) contributes to the multidrug resistance (MDR) phenotype found in many cancer cells. P-gp has been identified as a promising molecular target, although attempts to find successful therapies to counteract its function as a drug efflux pump have largely failed to date. Apart from its role in drug efflux, P-gp may have other cellular functions such as being involved in apoptosis, and is found in various locations in the cell. Its expression is highly regulated, namely by microRNAs (miRNAs or miRs). In addition, P-gp may regulate the expression of miRs in the cell. Furthermore, both P-gp and miRs may be found in microvesicles or exosomes and may be transported to neighboring, drug-sensitive cells. Here, we review this current issue together with recent evidence of this network of interactions between P-gp and miRs.
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Affiliation(s)
- Vanessa Lopes-Rodrigues
- Cancer Drug Resistance Group, Institute of Molecular Pathology and Immunology of the University of Porto, IPATIMUP, Porto, Portugal; Center of Medicinal Chemistry of the University of Porto, CEQUIMED-UP, Porto, Portugal; Institute of Biomedical Sciences Abel Salazar, University of Porto, ICBAS-UP, Porto, Portugal
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4
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de Moraes ACR, Maranho CK, Rauber GS, Santos-Silva MC. Importance of detecting multidrug resistance proteins in acute leukemia prognosis and therapy. J Clin Lab Anal 2013; 27:62-71. [PMID: 23292860 PMCID: PMC6807608 DOI: 10.1002/jcla.21563] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2012] [Accepted: 11/01/2012] [Indexed: 01/11/2023] Open
Abstract
Multidrug resistance (MDR) is a multifactorial phenomenon and the role of these proteins in generating the MDR phenotype is controversial. With this in mind, this review compiled the current data on the role of ABCB1, ABCC1, and LRP proteins in the prognosis of hematologic neoplasms and their influence on the choice of therapy. Literature showed that the detection of these proteins, mainly ABCB1, is important in the AL prognosis. However, there is controversy regarding the methodology used for their detection. In summary, the expression and activity profiles of ABCB1, ABCC1, and LRP, proteins capable of promoting the efflux of a variety of chemotherapeutic agents from the cell cytoplasm represent one of the greatest causes of failure in AL treatment.
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MESH Headings
- ATP Binding Cassette Transporter, Subfamily B/analysis
- ATP Binding Cassette Transporter, Subfamily B/metabolism
- ATP Binding Cassette Transporter, Subfamily B, Member 1/analysis
- ATP Binding Cassette Transporter, Subfamily B, Member 1/metabolism
- Acute Disease
- Biomarkers, Tumor/analysis
- Biomarkers, Tumor/metabolism
- Cell Line, Tumor
- Humans
- Leukemia/metabolism
- Leukemia/pathology
- Models, Biological
- Multidrug Resistance-Associated Proteins/analysis
- Multidrug Resistance-Associated Proteins/metabolism
- Prognosis
- Vault Ribonucleoprotein Particles/analysis
- Vault Ribonucleoprotein Particles/metabolism
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Affiliation(s)
- Ana Carolina Rabello de Moraes
- Programa de Pós-graduação em Farmácia, Universidade Federal de Santa Catarina, Campus Trindade, Florianópolis - SC, Brazil
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5
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Zunino SJ, Storms DH, Ducore JM. Novel in vivo model of inducible multi-drug resistance in acute lymphoblastic leukemia with chromosomal translocation t(4;11). Cancer Lett 2010; 296:49-54. [PMID: 20381955 PMCID: PMC2906616 DOI: 10.1016/j.canlet.2010.03.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2010] [Revised: 03/12/2010] [Accepted: 03/22/2010] [Indexed: 11/25/2022]
Abstract
Acute lymphoblastic leukemia (ALL) with translocation t(4;11) is found in 60-85% of infants with ALL and is often refractory to conventional chemotherapeutics after relapse. Using the t(4;11) ALL line SEM, we evaluated chemotherapy resistance in NOD.CB17-Prkdcscid/J mice. SEM cells were injected into the tail vein and engraftment was monitored by flow cytometry. Once engraftment was observed, mice were injected intraperitoneally with phosphate-buffered saline (PBS), or vincristine (0.5mg/kg body weight) three times per week for 4weeks (n=8 per group). The level of P-glycoprotein in SEM cells was increased 3-fold by vincristine treatment compared to PBS-treated mice. Survival curves showed that leukemia cell growth was initially delayed by vincristine treatment, but the mice eventually succumbed to disease. These data describe a novel inducible model for investigating multi-drug resistance mechanisms in high-risk t(4;11) ALL.
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MESH Headings
- Adult
- Animals
- Cell Death/drug effects
- Cell Line, Tumor
- Chromosomes, Human, Pair 11
- Chromosomes, Human, Pair 4
- Crosses, Genetic
- Drug Resistance, Multiple/genetics
- Female
- Humans
- Infant
- Male
- Mice
- Mice, Inbred NOD
- Mice, SCID
- Neoplasm Transplantation
- Precursor Cell Lymphoblastic Leukemia-Lymphoma/drug therapy
- Precursor Cell Lymphoblastic Leukemia-Lymphoma/genetics
- Precursor Cell Lymphoblastic Leukemia-Lymphoma/pathology
- Translocation, Genetic/genetics
- Ubiquitin Thiolesterase/genetics
- Vincristine/therapeutic use
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Affiliation(s)
- Susan J Zunino
- United States Department of Agriculture, Agricultural Research Service, Western Human Nutrition Research Center, 430 West Health Sciences Drive, Davis, CA 95616, United States.
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6
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Cortez MAA, Scrideli CA, Yunes JA, Valera ET, Toledo SRC, Pavoni-Ferreira PCB, Lee MLM, Petrilli AS, Brandalise SR, Tone LG. mRNA expression profile of multidrug resistance genes in childhood acute lymphoblastic leukemia. Low expression levels associated with a higher risk of toxic death. Pediatr Blood Cancer 2009; 53:996-1004. [PMID: 19672972 DOI: 10.1002/pbc.22220] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND Increased activity of multidrug resistance (MDR) genes has been associated with treatment failure in acute leukemias, although with controversial reports. The objective of the present study was to assess the expression profile of the genes related to MDR: ABCB1, ABCC1, ABCC3, ABCG2, and LRP/MVP in terms of the clinical and biological variable and the survival of children with acute lymphoblastic leukemia (ALL). PROCEDURE The levels of mRNA expression of the drug resistance genes ABCB1, ABCC1, ABCC3, ABCG2, and LRP/MVP were analyzed by quantitative real-time PCR using the median values as cut-off points, in consecutive samples from 140 children with ALL at diagnosis. RESULTS Expression levels of the ABCG2 gene in the patient group as a whole (P = 0.05) and of the ABCG2 and ABCC1 genes in patients classified as being at high risk were associated with higher rates of 5-year event-free survival (EFS) (P = 0.04 and P = 0.01). Expression levels of the ABCG2 gene below the median were associated with a greater chance of death related to treatment toxicity for the patient group as a whole (P = 0.009) and expression levels below the median of the ABCG2 and ABCC1 genes were associated with a greater chance of death due to treatment toxicity for the high-risk group (P = 0.02 and P = 0.03, respectively). CONCLUSION The present data suggest a low participation of the drug efflux genes in treatment failure in patients with childhood ALL. However, the low expression of some of these genes may be associated with a higher death risk related to treatment toxicity.
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Affiliation(s)
- Maria A A Cortez
- Faculty of Medicine of Ribeirao Preto, Department of Genetics, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
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7
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Brozek J, Bryl E, Płoszyńska A, Balcerska A, Witkowski JM. P-glycoprotein activity predicts outcome in childhood acute lymphoblastic leukemia. J Pediatr Hematol Oncol 2009; 31:493-9. [PMID: 19564743 DOI: 10.1097/mph.0b013e3181a974b3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Treatment of children with acute lymphoblastic leukemia (ALL) is based on P-glycoprotein (P-gp)-dependent cytostatics. We assessed the P-gp function in blast cells as a possible prognostic factor and its influence on the overall survival. P-gp function was measured using the verapamil-sensitive Rhodamine efflux. Cell samples from 7 of 45 (16%) patients revealed rhodamine-efflux positive blasts. There were no relations between the presence of P-gp, clinical characteristics (age, sex, hepatomegaly, and splenomegaly) and initial laboratory parameters (immunophenotype, white blood cells count, and serum lactate dehydrogenase) in ALL. P-gp activity plays a negative role, both for a remission achieved on day 33 and for susceptibility to steroid therapy. Children bearing rhodamine-efflux positive blasts had a significantly shorter 5-year overall survival of 35%, as compared with 74% in those negative for P-gp function. Lack of any association with clinical characteristic and initial laboratory parameters suggests that presence of P-gp is an independent prognostic factor.
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Affiliation(s)
- Jacek Brozek
- Departments of Pathophysiology, Medical University of Gdańsk, Gdańsk, Poland
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8
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van Grotel M, van den Heuvel-Eibrink MM, van Wering ER, van Noesel MM, Kamps WA, Veerman AJP, Pieters R, Meijerink JPP. CD34 expression is associated with poor survival in pediatric T-cell acute lymphoblastic leukemia. Pediatr Blood Cancer 2008; 51:737-40. [PMID: 18683236 DOI: 10.1002/pbc.21707] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Children with T-lineage acute lymphoblastic leukemia (T-ALL) have an inferior outcome with combination chemotherapy compared to B-lineage ALL, and still about 30% of the patients relapse within the first 2 years following diagnosis. As CD34 has been related with poor outcome in ALL in general, we investigated the prognostic significance of the stem cell marker CD34, as well as the association of CD34 positivity with the expression of several multidrug resistance (MDR) genes. PROCEDURE In this retrospective study, we investigated the prognostic significance of the expression of the early T-cell differentiation marker CD34 and the expression of MDR genes in relation to outcome in a cohort of 72 newly diagnosed pediatric T-ALL patients. RESULTS CD34 expression was related to a poor 5-year disease-free-survival and a poor 5-year overall survival. Using the Cox proportional hazard model, CD34 expression predicted for increased risk for relapse and death. Expression of CD34 was associated with elevated MDR1 and MRP1 mRNA expression levels. For the entire T-ALL cohort, these expression levels of MDR1 or MRP1 did not independently predict for poor outcome. CONCLUSIONS We conclude that CD34-positive T-ALL has a relatively poor survival that is not explained by the mRNA expression levels of MDR1, LRP, or MRP1.
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Affiliation(s)
- Martine van Grotel
- Department of Pediatric Oncology/Hematology, Erasmus University Medical Center-Sophia Children's Hospital, Rotterdam, The Netherlands
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9
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Ong V, Liem NLM, Schmid MA, Verrills NM, Papa RA, Marshall GM, Mackenzie KL, Kavallaris M, Lock RB. A role for altered microtubule polymer levels in vincristine resistance of childhood acute lymphoblastic leukemia xenografts. J Pharmacol Exp Ther 2007; 324:434-42. [PMID: 17986648 DOI: 10.1124/jpet.107.128926] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The microtubule-depolymerizing drug, vincristine, is effective in the treatment of acute lymphoblastic leukemia (ALL). Although vincristine resistance mechanisms have been extensively characterized in cell lines, their clinical relevance is poorly understood. The aim of the current study was to define clinically relevant mechanisms of vincristine resistance in a panel of childhood ALL xenografts established in immune-deficient (nonobese diabetic/severe combined immunodeficient) mice. We also studied two independent xenograft sublines that were selected by in vivo vincristine exposure. In vitro vincristine sensitivity determined by a stromal coculture, murine bone marrow stromal cell line (MS-5), assay, but not methyl-thiazolyl-tetrazolium metabolic activity assay, significantly correlated (P = 0.05) with the length of the patients' first remission. Investigations into mechanisms of resistance revealed no association with steady-state vincristine accumulation or increased activity and/or expression of ATP-binding cassette transporters, although increased intracellular levels of polymerized tubulin significantly correlated with resistance (r = 0.85; P = 0.0019). Two xenograft sublines selected by in vivo vincristine exposure exhibited a 2-fold increase in polymerized tubulin levels compared with the parental subline (P < 0.05), reflecting their in vivo vincristine resistance. In this study, a vincristine-resistant xenograft with high levels of polymerized tubulin was relatively sensitive to the microtubule-polymerizing drug paclitaxel. These results indicate that the balance between polymerized and nonpolymerized tubulin may be an important determinant of response to Vinca alkaloid-based chemotherapy regimens in childhood ALL.
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Affiliation(s)
- Vivienna Ong
- Children's Cancer Institute Australia, PO Box 81, High St., Randwick 2031, NSW, Australia
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10
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Steinbach D, Legrand O. ABC transporters and drug resistance in leukemia: was P-gp nothing but the first head of the Hydra? Leukemia 2007; 21:1172-6. [PMID: 17429427 DOI: 10.1038/sj.leu.2404692] [Citation(s) in RCA: 96] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
More than 30 years ago it was discovered that permeability glycoprotein (P-gp) can cause drug resistance. Over the following decades numerous studies showed that high expression of P-gp is associated with poor prognosis in acute myeloid leukemia in adults and that it causes multidrug resistance via ATP-dependent drug efflux. It was hoped that an inhibition of P-gp could sensitize resistant leukemic cells to chemotherapy and thus improve treatment results. Today we know that the family of ATP-binding cassette transporters (ABC transporters) comprises 48 different proteins. Some of them seem to be able to cause drug resistance as well as P-gp. This review focuses on emerging data on the clinical relevance of other ABC transporters, such as BCRP, MRP3, and ABCA3. When Heracles fought the ancient Hydra, he had to fight all the heads at ones but only one head was vital for the beast. Can we block all the relevant ABC transporters at once? Is there one transporter that is more important than the others?
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Affiliation(s)
- D Steinbach
- Pediatrics, University Children's Hospital, Ulm, Germany.
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11
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Vasconcelos FC, Cavalcanti GB, Silva KL, de Meis E, Kwee JK, Rumjanek VM, Maia RC. Contrasting features of MDR phenotype in leukemias by using two fluorochromes: Implications for clinical practice. Leuk Res 2007; 31:445-54. [PMID: 16979236 DOI: 10.1016/j.leukres.2006.07.016] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2006] [Revised: 06/23/2006] [Accepted: 07/01/2006] [Indexed: 11/19/2022]
Abstract
The expression and activity of P-glycoprotein (Pgp) and multidrug resistance-associated protein (MRP1) were analyzed in 178 leukemia samples. Rhodamine-123 (Rho-123) and DiOC(2) were used as substrate to evaluate efflux pump activity. Chronic myeloid leukemia (CML) exhibited a higher percentage of positivity using Rho-123 than DiOC(2) (p=0.000) as compared to other types of leukemia. Moreover, Rho-123 was able to detected Pgp positive cells in a higher proportion of samples than DiOC(2) samples (p=0.004). Similarly, MRP1 positive cells were best detected by Rho-123 as opposed to DiOC(2) (p=0.003). The co-functionality of Rho-123 and DiOC(2) was observed in 26 out of 105 (24.8%) leukemic samples. Co-expression between Pgp and MRP1 was detected in 30 out of 56 (53.6%) samples. As a whole, when the same samples were analyzed, Rho-123 was able to detect Pgp positive cells in a higher proportion of samples than DiOC(2) (p=0.000). Similarly, MRP1 positive cells were best detected by Rho-123 as opposed to DiOC(2) (p=0.007). Our results support the idea that Rho-123 is the substrate of choice for leukemic cells.
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MESH Headings
- ATP Binding Cassette Transporter, Subfamily B, Member 1/metabolism
- Carbocyanines/metabolism
- Drug Resistance, Multiple
- Drug Resistance, Neoplasm
- Flow Cytometry
- Fluorescent Dyes/metabolism
- Humans
- Leukemia/drug therapy
- Leukemia/metabolism
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/metabolism
- Leukemia, Myeloid, Acute/drug therapy
- Leukemia, Myeloid, Acute/metabolism
- Leukemia, Promyelocytic, Acute/drug therapy
- Leukemia, Promyelocytic, Acute/metabolism
- Multidrug Resistance-Associated Proteins/metabolism
- Phenotype
- Precursor Cell Lymphoblastic Leukemia-Lymphoma/drug therapy
- Precursor Cell Lymphoblastic Leukemia-Lymphoma/metabolism
- Rhodamine 123/metabolism
- Tumor Cells, Cultured
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Affiliation(s)
- Flavia C Vasconcelos
- Laboratório de Hematologia Celular e Molecular, Serviço de Hematologia, Hospital do Câncer (HC-I), Instituto Nacional de Câncer (INCA), Rio de Janeiro-RJ, Brazil
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12
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Baudis M, Prima V, Tung YH, Hunger SP. ABCB1 over-expression and drug-efflux in acute lymphoblastic leukemia cell lines with t(17;19) and E2A-HLF expression. Pediatr Blood Cancer 2006; 47:757-64. [PMID: 16206189 DOI: 10.1002/pbc.20635] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND The t(17;19)(q21;p13), which occurs in a small subset of acute lymphoblastic leukemias (ALLs) and is associated with a dismal prognosis, creates a chimeric E2A-HLF transcription factor with transforming properties. PROCEDURE We used representational difference analysis to identify candidate E2A-HLF target genes. Transient transfection assays and an inducible expression model system were then used to evaluate the ability of E2A-HLF to modulate target gene expression. RESULTS We identified ABCB1 (MDR1, P-glycoprotein) as a gene differentially expressed in ALL cell lines with and without E2A-HLF expression and demonstrated that t(17;19)+ ALL cell lines expressed high levels of ABCB1 protein and had a drug efflux-positive phenotype. Although ABCB1 transcription is regulated by C/EBPbeta via interaction with a DNA response element that shares significant homology with the optimal E2A-HLF binding site, E2A-HLF did not directly activate transcription of reporter genes under control of ABCB1 promoter elements in transient transfection assays. However, ABCB1 expression was induced in a DNA-binding independent manner by E2A-HLF, E2A-PBX1, and truncated E2A polypeptides consisting of those portions of E2A present in leukemic fusion proteins. CONCLUSIONS E2A-HLF-mediated over-expression of ABCB1 may play a critical role in defining the clinical phenotype of ALLs with a t(17;19), suggesting pharmacologic modulation of ABCB1 activity as a rational therapeutic strategy for this chemotherapy resistant subtype of ALL.
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MESH Headings
- ATP Binding Cassette Transporter, Subfamily B
- ATP Binding Cassette Transporter, Subfamily B, Member 1
- Binding Sites
- Biological Transport, Active/drug effects
- Biological Transport, Active/genetics
- Cell Line, Tumor
- Chromosomes, Human, Pair 17/genetics
- Chromosomes, Human, Pair 19/genetics
- DNA-Binding Proteins/biosynthesis
- DNA-Binding Proteins/genetics
- Gene Expression Regulation, Neoplastic/drug effects
- Gene Expression Regulation, Neoplastic/genetics
- Humans
- Oncogene Proteins, Fusion/biosynthesis
- Oncogene Proteins, Fusion/genetics
- Organic Anion Transporters/drug effects
- Organic Anion Transporters/genetics
- Phenotype
- Precursor Cell Lymphoblastic Leukemia-Lymphoma/diagnosis
- Precursor Cell Lymphoblastic Leukemia-Lymphoma/genetics
- Precursor Cell Lymphoblastic Leukemia-Lymphoma/metabolism
- Prognosis
- RNA, Messenger/drug effects
- RNA, Messenger/genetics
- Rhodamines/pharmacokinetics
- Transcription Factors/biosynthesis
- Transcription Factors/genetics
- Transcription, Genetic
- Translocation, Genetic
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Affiliation(s)
- Michael Baudis
- Department of Pediatrics, University of Florida College of Medicine and the University of Florida Shands Cancer Center, Gainesville, FL 32610-0296, USA
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13
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Shi HC, Shi WP, Shu YC, Lu SC, Wang K, Gu XW, Tian XC. Expression of P-glycoprotein, glutathione S-transferase-π, topoisomerase Ⅱ and lung resistance protein in cardiac carcinoma and their clinical significances. Shijie Huaren Xiaohua Zazhi 2006; 14:1587-1591. [DOI: 10.11569/wcjd.v14.i16.1587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the expression of multidrug resistant proteins and their clinical significances in cardiac carcinoma tissues.
METHODS: The expression of P-glycoprotein (P-gp), glutathione S-transferase-p (GST-π), topoisomerase Ⅱ (Topo-Ⅱ) and lung resistance protein (LRP) in 69 patients with cardiac carcinoma were determined by SP immunohistochemistry,and the results were studied in correlation with clinicopathological data.
RESULTS: The positive rates of P-gp, GST-π, Topo-Ⅱ and LRP expression in cardiac carcinoma (49.2%, 75.4%, 68.1% and 58%, respectively) were all higher than those in the normal tissues (0, 30%, 20% and 0, respectively, all P < 0.01). The expression of P-gp was correlated with clinical staging (Ⅰ, Ⅱ vs Ⅲ, Ⅳ: 28.6% vs 58.3%, P < 0.05) and lymphatic metastasis (metastasis vs non-metastasis: 67.5% vs 24.1%, P < 0.01). A significant correlation was found between GST-π and differentiated degree (40%, 75.8% and 88.5% for high, moderate, and low differentiation, respectively, P < 0.05), clinical staging (Ⅰ, Ⅱ vs Ⅲ, Ⅳ: 57.1% vs 83.2%, P < 0.05) and lymphatic metastasis (metastasis vs non-metastasis: 87.5% vs 58.6%, P< 0.05). The level of Topo-Ⅱexpression was associated with differentiated degree (33.3%, 69.7%, and 80.7%, for high, moderate, and low differentiation, respectively, P < 0.01), but not with the clinical staging (P > 0.05) and lymphatic metastasis (P > 0.05). LRP expression was in correlation with the clinical staging (Ⅰ, Ⅱ vs Ⅲ, Ⅳ: 38% vs 66.6%, P < 0.05), and lymphatic metastasis (metastasis vs non-metastasis: 70.0% vs 41.4%, P < 0.05).
CONCLUSION: Primary multidrug resistance coexists in cardiac carcinoma. Combined determination of P-gp, GST-π, Topo-Ⅱand LRP is useful for predicting the chemosensitivities and optimizing the chemotherapy strategies.
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Current Awareness in Hematological Oncology. Hematol Oncol 2005. [DOI: 10.1002/hon.730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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