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Sanchez-Hernandez ES, Ochoa PT, Suzuki T, Ortiz-Hernandez GL, Unternaehrer JJ, Alkashgari HR, Diaz Osterman CJ, Martinez SR, Chen Z, Kremsky I, Wang C, Casiano CA. Glucocorticoid Receptor Regulates and Interacts with LEDGF/p75 to Promote Docetaxel Resistance in Prostate Cancer Cells. Cells 2023; 12:2046. [PMID: 37626856 PMCID: PMC10453226 DOI: 10.3390/cells12162046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 07/31/2023] [Accepted: 08/05/2023] [Indexed: 08/27/2023] Open
Abstract
Patients with advanced prostate cancer (PCa) invariably develop resistance to anti-androgen therapy and taxane-based chemotherapy. Glucocorticoid receptor (GR) has been implicated in PCa therapy resistance; however, the mechanisms underlying GR-mediated chemoresistance remain unclear. Lens epithelium-derived growth factor p75 (LEDGF/p75, also known as PSIP1 and DFS70) is a glucocorticoid-induced transcription co-activator implicated in cancer chemoresistance. We investigated the contribution of the GR-LEDGF/p75 axis to docetaxel (DTX)-resistance in PCa cells. GR silencing in DTX-sensitive and -resistant PCa cells decreased LEDGF/p75 expression, and GR upregulation in enzalutamide-resistant cells correlated with increased LEDGF/p75 expression. ChIP-sequencing revealed GR binding sites in the LEDGF/p75 promoter. STRING protein-protein interaction analysis indicated that GR and LEDGF/p75 belong to the same transcriptional network, and immunochemical studies demonstrated their co-immunoprecipitation and co-localization in DTX-resistant cells. The GR modulators exicorilant and relacorilant increased the sensitivity of chemoresistant PCa cells to DTX-induced cell death, and this effect was more pronounced upon LEDGF/p75 silencing. RNA-sequencing of DTX-resistant cells with GR or LEDGF/p75 knockdown revealed a transcriptomic overlap targeting signaling pathways associated with cell survival and proliferation, cancer, and therapy resistance. These studies implicate the GR-LEDGF/p75 axis in PCa therapy resistance and provide a pre-clinical rationale for developing novel therapeutic strategies for advanced PCa.
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Affiliation(s)
- Evelyn S. Sanchez-Hernandez
- Center for Health Disparities and Molecular Medicine, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (E.S.S.-H.); (T.S.); (G.L.O.-H.); (J.J.U.); (H.R.A.)
- Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (Z.C.); (I.K.); (C.W.)
| | - Pedro T. Ochoa
- Center for Health Disparities and Molecular Medicine, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (E.S.S.-H.); (T.S.); (G.L.O.-H.); (J.J.U.); (H.R.A.)
- Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (Z.C.); (I.K.); (C.W.)
| | - Tise Suzuki
- Center for Health Disparities and Molecular Medicine, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (E.S.S.-H.); (T.S.); (G.L.O.-H.); (J.J.U.); (H.R.A.)
- Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (Z.C.); (I.K.); (C.W.)
| | - Greisha L. Ortiz-Hernandez
- Center for Health Disparities and Molecular Medicine, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (E.S.S.-H.); (T.S.); (G.L.O.-H.); (J.J.U.); (H.R.A.)
| | - Juli J. Unternaehrer
- Center for Health Disparities and Molecular Medicine, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (E.S.S.-H.); (T.S.); (G.L.O.-H.); (J.J.U.); (H.R.A.)
- Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (Z.C.); (I.K.); (C.W.)
| | - Hossam R. Alkashgari
- Center for Health Disparities and Molecular Medicine, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (E.S.S.-H.); (T.S.); (G.L.O.-H.); (J.J.U.); (H.R.A.)
- Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (Z.C.); (I.K.); (C.W.)
- Department of Physiology, College of Medicine, University of Jeddah, Jeddah 23890, Saudi Arabia
| | - Carlos J. Diaz Osterman
- Department of Basic Sciences, Ponce Health Sciences University, Ponce, PR 00716, USA; (C.J.D.O.); (S.R.M.)
| | - Shannalee R. Martinez
- Department of Basic Sciences, Ponce Health Sciences University, Ponce, PR 00716, USA; (C.J.D.O.); (S.R.M.)
| | - Zhong Chen
- Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (Z.C.); (I.K.); (C.W.)
- Center for Genomics, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA
| | - Isaac Kremsky
- Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (Z.C.); (I.K.); (C.W.)
- Center for Genomics, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA
| | - Charles Wang
- Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (Z.C.); (I.K.); (C.W.)
- Center for Genomics, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA
| | - Carlos A. Casiano
- Center for Health Disparities and Molecular Medicine, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (E.S.S.-H.); (T.S.); (G.L.O.-H.); (J.J.U.); (H.R.A.)
- Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (Z.C.); (I.K.); (C.W.)
- Rheumatology Division, Department of Medicine, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA
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Michmerhuizen NL, Klco JM, Mullighan CG. Mechanistic insights and potential therapeutic approaches for NUP98-rearranged hematologic malignancies. Blood 2020; 136:2275-2289. [PMID: 32766874 PMCID: PMC7702474 DOI: 10.1182/blood.2020007093] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 07/21/2020] [Indexed: 12/15/2022] Open
Abstract
Nucleoporin 98 (NUP98) fusion oncoproteins are observed in a spectrum of hematologic malignancies, particularly pediatric leukemias with poor patient outcomes. Although wild-type full-length NUP98 is a member of the nuclear pore complex, the chromosomal translocations leading to NUP98 gene fusions involve the intrinsically disordered and N-terminal region of NUP98 with over 30 partner genes. Fusion partners include several genes bearing homeodomains or having known roles in transcriptional or epigenetic regulation. Based on data in both experimental models and patient samples, NUP98 fusion oncoprotein-driven leukemogenesis is mediated by changes in chromatin structure and gene expression. Multiple cofactors associate with NUP98 fusion oncoproteins to mediate transcriptional changes possibly via phase separation, in a manner likely dependent on the fusion partner. NUP98 gene fusions co-occur with a set of additional mutations, including FLT3-internal tandem duplication and other events contributing to increased proliferation. To improve the currently dire outcomes for patients with NUP98-rearranged malignancies, therapeutic strategies have been considered that target transcriptional and epigenetic machinery, cooperating alterations, and signaling or cell-cycle pathways. With the development of more faithful experimental systems and continued study, we anticipate great strides in our understanding of the molecular mechanisms and therapeutic vulnerabilities at play in NUP98-rearranged models. Taken together, these studies should lead to improved clinical outcomes for NUP98-rearranged leukemia.
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Affiliation(s)
| | - Jeffery M Klco
- Department of Pathology, St. Jude Children's Research Hospital, Memphis, TN
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Liu H, Wang X, Zhang H, Wang J, Chen Y, Ma T, Shi J, Kang Y, Xi J, Wang M, Zhang M. Dynamic changes in the level of WT1 as an MRD marker to predict the therapeutic outcome of patients with AML with and without allogeneic stem cell transplantation. Mol Med Rep 2019; 20:2426-2432. [PMID: 31257540 DOI: 10.3892/mmr.2019.10440] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Accepted: 05/14/2019] [Indexed: 11/06/2022] Open
Abstract
Monitoring minimal residue disease (MRD) is an effective approach to evaluate the response to chemotherapy, and it is used to select the ideal therapeutic strategy and to predict the recurrence during therapy for hematological disorders. The Wilm's tumor 1 (WT1) gene, which is highly expressed in >80% of patients with acute myeloid leukemia (AML) and its increased expression level may cause poor clinical outcomes, is a potential MRD marker of hematological neoplasms. In the present study, the expression levels of WT1 and other molecular markers were retrospectively analyzed by reverse transcription‑quantitative PCR in 195 patients with AML. The expression level of WT1 was significantly lower in patients with remission compared with patients with early‑stage and recurrent AML. Moreover, WT1 expression was significantly decreased in patients with RUNX family transcription factor 1‑RUNX1 translocation partner 1 fusion, but higher in patients with promyelocytic leukemia‑retinoic acid receptor α fusion. WT1 expression was significantly reduced during remission. In patients with AML who underwent allogeneic hematopoietic stem cell transplantation (allo‑HSCT), the mortality rate 2 years after allo‑HSCT was significantly lower in patients with low expression level of WT1 compared with subjects presenting high expression level of WT1. Collectively, the upregulation of the expression level of WT1 in combination with the identification of other genetic abnormalities may be used as MRD markers of hematological neoplasms.
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Affiliation(s)
- Huasheng Liu
- Department of Hematology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Xiaoning Wang
- Department of Hematology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Hailing Zhang
- Department of Hematology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Jincheng Wang
- Department of Hematology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Ying Chen
- Department of Hematology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Tiantian Ma
- Department of Hematology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Jing Shi
- Department of Hematology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Ya Kang
- Department of Hematology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Jieying Xi
- Department of Hematology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Mengchang Wang
- Department of Hematology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Mei Zhang
- Department of Hematology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
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Gallego Hernanz MP, Torregrosa Diaz JM, Sorel N, Bobin A, Dindinaud E, Bouyer S, Desmier D, Brizard F, Leleu X, Maillard N, Chomel JC. Long-term molecular remission in a patient with acute myeloid leukemia harboring a new NUP98-LEDGF rearrangement. Cancer Med 2019; 8:1765-1770. [PMID: 30848074 PMCID: PMC6488106 DOI: 10.1002/cam4.2051] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 01/21/2019] [Accepted: 02/03/2019] [Indexed: 12/17/2022] Open
Abstract
A large variety of molecular rearrangements of the NUP98 gene have been described in the past decades (n = 72), involving fusion partners coding for different transcription factors, chromatin modifying enzymes, as well as various cytosolic proteins. Here, we report the case of an AML-M2 patient with a variant NUP98-LEDGF/PSIP1 gene fusion (N9-L10). In this patient, three different NUP98-LEDGF fusion mRNAs were characterized due to alternative splicing in LEDGF exon 11. Targeted high-throughput sequencing revealed the presence of IDH1, SRSF2, and WT1 additional pathogenic mutations. To improve the therapeutic monitoring, quantification of NUP98-LEDGF mRNA by real-time PCR was developed. Because of poor response to conventional chemotherapy, allogeneic stem cell transplantation was performed, followed by 20 cycles of azacitidine-based preemptive treatment of relapse. More than 31 months after diagnosis, corresponding to 25 months post SCT and 4 months after the last cycle of azacytidine, the patient is in complete molecular remission (undetectable NUP98-LEDGF mRNA transcripts). This study highlights the considerable variability in breakpoint location within both NUP98 and LEDGF, associated with alternative splicing affecting LEDGF. It also emphasizes the need to fully characterize the breakpoints within the two genes and the identification of all fusion mRNAs, particularly for the development of a molecular monitoring assay. All these data seem critical for the optimal management of NUP98-LEDGF + hematological malignancies commonly associated with a poor prognosis.
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Affiliation(s)
| | | | - Nathalie Sorel
- CHU de Poitiers, Service de Cancérologie Biologique, Poitiers, France
| | - Arthur Bobin
- CHU de Poitiers, Service d'Oncologie Hématologique et Thérapie Cellulaire, Poitiers, France
| | - Elodie Dindinaud
- CHU de Poitiers, Service d'Hématologie Biologique, Poitiers, France
| | - Sabrina Bouyer
- CHU de Poitiers, Service d'Hématologie Biologique, Poitiers, France
| | - Deborah Desmier
- CHU de Poitiers, Service d'Oncologie Hématologique et Thérapie Cellulaire, Poitiers, France
| | | | - Xavier Leleu
- CHU de Poitiers, Service d'Oncologie Hématologique et Thérapie Cellulaire, Poitiers, France.,INSERM, CIC-P, Poitiers, France
| | - Natacha Maillard
- CHU de Poitiers, Service d'Oncologie Hématologique et Thérapie Cellulaire, Poitiers, France
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