1
|
Thomas JR, Frye WJE, Robey RW, Warner AC, Butcher D, Matta JL, Morgan TC, Edmondson EF, Salazar PB, Ambudkar SV, Gottesman MM. Abcg2a is the functional homolog of human ABCG2 expressed at the zebrafish blood-brain barrier. Fluids Barriers CNS 2024; 21:27. [PMID: 38491505 PMCID: PMC10941402 DOI: 10.1186/s12987-024-00529-5] [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: 12/21/2023] [Accepted: 03/04/2024] [Indexed: 03/18/2024] Open
Abstract
BACKGROUND A principal protective component of the mammalian blood-brain barrier (BBB) is the high expression of the multidrug efflux transporters P-glycoprotein (P-gp, encoded by ABCB1) and ABCG2 (encoded by ABCG2) on the lumenal surface of endothelial cells. The zebrafish P-gp homolog Abcb4 is expressed at the BBB and phenocopies human P-gp. Comparatively little is known about the four zebrafish homologs of the human ABCG2 gene: abcg2a, abcg2b, abcg2c, and abcg2d. Here we report the functional characterization and brain tissue distribution of zebrafish ABCG2 homologs. METHODS To determine substrates of the transporters, we stably expressed each in HEK-293 cells and performed cytotoxicity and fluorescent efflux assays with known ABCG2 substrates. To assess the expression of transporter homologs, we used a combination of RNAscope in situ hybridization probes and immunohistochemistry to stain paraffin-embedded sections of adult and larval zebrafish. RESULTS We found Abcg2a had the greatest substrate overlap with ABCG2, and Abcg2d appeared to be the least functionally similar. We identified abcg2a as the only homolog expressed at the adult and larval zebrafish BBB, based on its localization to claudin-5 positive brain vasculature. CONCLUSIONS These results demonstrate the conserved function of zebrafish Abcg2a and suggest that zebrafish may be an appropriate model organism for studying the role of ABCG2 at the BBB.
Collapse
Affiliation(s)
- Joanna R Thomas
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, 37 Convent Drive, Room 2108, Bethesda, MD, 20892, USA
| | - William J E Frye
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, 37 Convent Drive, Room 2108, Bethesda, MD, 20892, USA
| | - Robert W Robey
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, 37 Convent Drive, Room 2108, Bethesda, MD, 20892, USA
| | - Andrew C Warner
- Molecular Histopathology Laboratory, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Donna Butcher
- Molecular Histopathology Laboratory, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Jennifer L Matta
- Molecular Histopathology Laboratory, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Tamara C Morgan
- Molecular Histopathology Laboratory, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Elijah F Edmondson
- Molecular Histopathology Laboratory, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Paula B Salazar
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, 37 Convent Drive, Room 2108, Bethesda, MD, 20892, USA
| | - Suresh V Ambudkar
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, 37 Convent Drive, Room 2108, Bethesda, MD, 20892, USA
| | - Michael M Gottesman
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, 37 Convent Drive, Room 2108, Bethesda, MD, 20892, USA.
| |
Collapse
|
2
|
Thomas JR, Frye WJE, Robey RW, Warner AC, Butcher D, Matta JL, Morgan TC, Edmondson EF, Salazar PB, Ambudkar SV, Gottesman MM. Abcg2a is the functional homolog of human ABCG2 expressed at the zebrafish blood-brain barrier. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.05.18.539313. [PMID: 37425689 PMCID: PMC10327217 DOI: 10.1101/2023.05.18.539313] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/11/2023]
Abstract
Background A principal protective component of the mammalian blood-brain barrier (BBB) is the high expression of the multidrug efflux transporters P-glycoprotein (P-gp, encoded by ABCB1) and ABCG2 (encoded by ABCG2) on the lumenal surface of endothelial cells. The zebrafish P-gp homolog Abcb4 is expressed at the BBB and phenocopies human P-gp. Comparatively little is known about the four zebrafish homologs of the human ABCG2 gene: abcg2a, abcg2b, abcg2c, and abcg2d. Here we report the functional characterization and brain tissue distribution of zebrafish ABCG2 homologs. Methods To determine substrates of the transporters, we stably expressed each in HEK-293 cells and performed cytotoxicity and fluorescent efflux assays with known ABCG2 substrates. To assess the expression of transporter homologs, we used a combination of RNAscope in situ hybridization probes and immunohistochemistry to stain paraffin-embedded sections of adult and larval zebrafish. Results We found Abcg2a had the greatest substrate overlap with ABCG2, and Abcg2d appeared to be the least functionally similar. We identified abcg2a as the only homolog expressed at the adult and larval zebrafish BBB, based on its localization to claudin-5 positive brain vasculature. Conclusions These results demonstrate the conserved function of zebrafish Abcg2a and suggest that zebrafish may be an appropriate model organism for the studying the role of ABCG2 at the BBB.
Collapse
Affiliation(s)
- Joanna R. Thomas
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - William J. E. Frye
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Robert W. Robey
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Andrew C. Warner
- Molecular Histopathology Laboratory, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Donna Butcher
- Molecular Histopathology Laboratory, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Jennifer L. Matta
- Molecular Histopathology Laboratory, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Tamara C. Morgan
- Molecular Histopathology Laboratory, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Elijah F. Edmondson
- Molecular Histopathology Laboratory, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Paula B. Salazar
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Suresh V. Ambudkar
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Michael M. Gottesman
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| |
Collapse
|
3
|
Barghout SH, Mann MK, Aman A, Yu Y, Alteen MG, Schimmer AD, Schapira M, Arrowsmith CH, Barsyte-Lovejoy D. Combinatorial Anticancer Drug Screen Identifies Off-Target Effects of Epigenetic Chemical Probes. ACS Chem Biol 2022; 17:2801-2816. [PMID: 36084291 DOI: 10.1021/acschembio.2c00451] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Anticancer drug response is determined by genetic and epigenetic mechanisms. To identify the epigenetic regulators of anticancer drug response, we conducted a chemical epigenetic screen using chemical probes that target different epigenetic modulators. In this screen, we tested 31 epigenetic probes in combination with 14 mechanistically diverse anticancer agents and identified 8 epigenetic probes that significantly potentiate the cytotoxicity of TAK-243, a first-in-class ubiquitin-activating enzyme (UBA1) inhibitor evaluated in several solid and hematologic malignancies. These probes are TP-472, GSK864, A-196, UNC1999, SGC-CBP30, and PFI-4 (and its related analogues GSK6853 and GSK5959), and they target BRD9/7, mutant IDH1, SUV420H1/2, EZH2/1, p300/CBP, and BRPF1B, respectively. In contrast to epigenetic probes, negative control compounds did not have a significant impact on TAK-243 cytotoxicity. Potentiation of TAK-243 cytotoxicity was associated with reduced ubiquitylation and induction of apoptosis. Mechanistically, these epigenetic probes exerted their potentiation by inhibiting the efflux transporter ATP-binding cassette subfamily G member 2 (ABCG2) without inducing significant changes in the ubiquitylation pathways or ABCG2 expression levels. As assessed by docking analysis, the identified probes could potentially interact with ABCG2. Based on these data, we have developed a cell-based assay that can quantitatively evaluate ABCG2 inhibition by drug candidates. In conclusion, our study identifies epigenetic probes that profoundly potentiate TAK-243 cytotoxicity through off-target ABCG2 inhibition. We also provide experimental evidence that several negative control compounds cannot exclude a subset of off-target effects of chemical probes. Finally, potentiation of TAK-243 cytotoxicity can serve as a quantitative measure of ABCG2-inhibitory activity.
Collapse
Affiliation(s)
- Samir H Barghout
- Structural Genomics Consortium, University of Toronto, Toronto, Ontario M5G 1L7, Canada.,Department of Pharmacology & Toxicology, Faculty of Medicine, University of Toronto, Toronto, Ontario M5S 1A8, Canada.,Department of Pharmacology & Toxicology, Faculty of Pharmacy, Tanta University, Tanta 31111, Egypt
| | - Mandeep K Mann
- Structural Genomics Consortium, University of Toronto, Toronto, Ontario M5G 1L7, Canada.,Department of Pharmacology & Toxicology, Faculty of Medicine, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Ahmed Aman
- Drug Discovery Program, Ontario Institute for Cancer Research, Toronto, Ontario M5G 0A3, Canada.,Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario M5S 3M2, Canada
| | - Yifan Yu
- Structural Genomics Consortium, University of Toronto, Toronto, Ontario M5G 1L7, Canada.,Department of Pharmacology & Toxicology, Faculty of Medicine, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Matthew G Alteen
- Structural Genomics Consortium, University of Toronto, Toronto, Ontario M5G 1L7, Canada
| | - Aaron D Schimmer
- Department of Medical Biophysics, Faculty of Medicine, University of Toronto, Toronto, Ontario M5G 1L7, Canada.,Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario M5G 1L7, Canada
| | - Matthieu Schapira
- Structural Genomics Consortium, University of Toronto, Toronto, Ontario M5G 1L7, Canada.,Department of Pharmacology & Toxicology, Faculty of Medicine, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Cheryl H Arrowsmith
- Structural Genomics Consortium, University of Toronto, Toronto, Ontario M5G 1L7, Canada.,Department of Medical Biophysics, Faculty of Medicine, University of Toronto, Toronto, Ontario M5G 1L7, Canada.,Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario M5G 1L7, Canada
| | - Dalia Barsyte-Lovejoy
- Structural Genomics Consortium, University of Toronto, Toronto, Ontario M5G 1L7, Canada.,Department of Pharmacology & Toxicology, Faculty of Medicine, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| |
Collapse
|
4
|
Narayanan S, Teng QX, Wu ZX, Nazim U, Karadkhelkar N, Acharekar N, Yoganathan S, Mansoor N, Ping FF, Chen ZS. Anticancer effect of Indanone-based thiazolyl hydrazone derivative on p53 mutant colorectal cancer cell lines: An in vitro and in vivo study. Front Oncol 2022; 12:949868. [PMID: 35992866 PMCID: PMC9386487 DOI: 10.3389/fonc.2022.949868] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Accepted: 06/27/2022] [Indexed: 11/13/2022] Open
Abstract
Colorectal cancer is a major health problem, and it is the third most diagnosed cancer in the United States. The current treatment for colorectal cancer includes irinotecan, a topoisomerase I inhibitor, and other targeted drugs, such as bevacizumab and regorafenib. The low response rates and incidence of high toxicity caused by these drugs instigated an evaluation of the anticancer efficacy of a series of 13 thiazolyl hydrazone derivatives of 1-indanone, and four compounds among them show favorable anticancer activity against some of the tested colorectal cancer cell lines with IC50 values ranging from 0.41 ± 0.19 to 6.85 ± 1.44 μM. It is noteworthy that one of the indanone-based thiazolyl hydrazone (ITH) derivatives, N-Indan-1-ylidene-N’-(4-Biphenyl-4-yl-thiazol-2-yl)-hydrazine (ITH-6), has a better cytotoxicity profile against p53 mutant colorectal cancer cells HT-29, COLO 205, and KM 12 than a p53 wild-type colorectal cancer cell line, such as HCT 116. Mechanistic studies show that ITH-6 arrests these three cancer cell lines in the G2/M phase and induces apoptosis. It also causes a rise in the reactive oxygen species level with a remarkable decrease in the glutathione (GSH) level. Moreover, ITH-6 inhibits the expression of NF-κB p65 and Bcl-2, which proves its cytotoxic action. In addition, ITH-6 significantly decreased tumor size, growth rate, and tumor volume in mice bearing HT-29 and KM 12 tumor xenografts. Moreover, CRISPR/Cas9 was applied to establish an NF-κB p65 gene knockout HT-29 cell line model to validate the target of ITH-6. Overall, the results suggest that ITH-6 could be a potential anticancer drug candidate for p53 mutant colorectal cancers.
Collapse
Affiliation(s)
- Silpa Narayanan
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY, United States
| | - Qiu-Xu Teng
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY, United States
| | - Zhuo-Xun Wu
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY, United States
| | - Urooj Nazim
- Department of Pharmaceutical Chemistry, University of Karachi, Karachi, Pakistan
| | - Nishant Karadkhelkar
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY, United States
| | - Nikita Acharekar
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY, United States
| | - Sabesan Yoganathan
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY, United States
| | - Najia Mansoor
- Department of Pharmaceutical Chemistry, University of Karachi, Karachi, Pakistan
| | - Feng-Feng Ping
- Department of Reproductive Medicine, Wuxi People’s Hospital Affiliated to Nanjing Medical University, Wu-xi, China
- *Correspondence: Zhe-Sheng Chen, ; Feng-Feng Ping,
| | - Zhe-Sheng Chen
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY, United States
- *Correspondence: Zhe-Sheng Chen, ; Feng-Feng Ping,
| |
Collapse
|
5
|
Narayanan S, Fan YF, Gujarati NA, Teng QX, Wang JQ, Cai CY, Yang Y, Chintalapati AJ, Lei Y, Korlipara VL, Chen ZS. VKNG-1 Antagonizes ABCG2-Mediated Multidrug Resistance via p-AKT and Bcl-2 Pathway in Colon Cancer: In Vitro and In Vivo Study. Cancers (Basel) 2021; 13:4675. [PMID: 34572902 PMCID: PMC8470077 DOI: 10.3390/cancers13184675] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/23/2021] [Accepted: 09/07/2021] [Indexed: 11/16/2022] Open
Abstract
The emergence of multidrug resistance (MDR) to chemotherapeutic drugs is a major problem in the therapy of cancer. Knowledge of the mechanisms of drug resistance in cancer is necessary for developing efficacious therapies. ATP-binding cassette (ABC) transporters are transmembrane proteins that efflux chemotherapeutic drugs from cancer cells, thereby producing MDR. Our research efforts have led to the discovery of VKNG-1, a compound that selectively inhibits the ABCG2 transporter and reverses resistanctabe to standard anticancer drugs both in vitro and in vivo. VKNG-1, at 6 µM, selectively inhibited ABCG2 transporter and sensitized ABCG2-overexpressing drug-resistant cancer cells to the ABCG2 substrate anticancer drugs mitoxantrone, SN-38, and doxorubicin in ABCG2-overexpressing colon cancers. VKNG- 1 reverses ABCG2-mediated MDR by blocking ABCG2 efflux activity and downregulating ABCG2 expression at the mRNA and protein levels. Moreover, VKNG-1 inhibits the level of phosphorylated protein kinase B (PKB/p-AKT), and B-cell lymphoma-2 (Bcl-2) protein which may overcome resistance to anticancer drugs. However, the in vitro translocation of ABCG2 protein did not occur in the presence of 6 µM of VKNG-1. In addition, VKNG-1 enhanced the anticancer efficacy of irinotecan in ABCG2- overexpressing mouse tumor xenografts. Overall, our results suggest that VKNG-1 may, in combination with certain anticancer drugs, represent a treatment to overcome ABCG2-mediated MDR colon cancers.
Collapse
Affiliation(s)
- Silpa Narayanan
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (S.N.); (Y.-F.F.); (N.A.G.); (Q.-X.T.); (J.-Q.W.); (C.-Y.C.); (Y.Y.); (A.J.C.)
| | - Ying-Fang Fan
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (S.N.); (Y.-F.F.); (N.A.G.); (Q.-X.T.); (J.-Q.W.); (C.-Y.C.); (Y.Y.); (A.J.C.)
- Department of Hepatobiliary Surgery, Zhu Jiang Hospital of Southern Medical University, Guangzhou 510282, China
| | - Nehaben A. Gujarati
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (S.N.); (Y.-F.F.); (N.A.G.); (Q.-X.T.); (J.-Q.W.); (C.-Y.C.); (Y.Y.); (A.J.C.)
| | - Qiu-Xu Teng
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (S.N.); (Y.-F.F.); (N.A.G.); (Q.-X.T.); (J.-Q.W.); (C.-Y.C.); (Y.Y.); (A.J.C.)
| | - Jing-Quan Wang
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (S.N.); (Y.-F.F.); (N.A.G.); (Q.-X.T.); (J.-Q.W.); (C.-Y.C.); (Y.Y.); (A.J.C.)
| | - Chao-Yun Cai
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (S.N.); (Y.-F.F.); (N.A.G.); (Q.-X.T.); (J.-Q.W.); (C.-Y.C.); (Y.Y.); (A.J.C.)
| | - Yuqi Yang
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (S.N.); (Y.-F.F.); (N.A.G.); (Q.-X.T.); (J.-Q.W.); (C.-Y.C.); (Y.Y.); (A.J.C.)
| | - Anirudh J. Chintalapati
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (S.N.); (Y.-F.F.); (N.A.G.); (Q.-X.T.); (J.-Q.W.); (C.-Y.C.); (Y.Y.); (A.J.C.)
| | - Yixiong Lei
- School of Public Health, Guangzhou Medical University, Guangzhou 511436, China;
| | - Vijaya L. Korlipara
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (S.N.); (Y.-F.F.); (N.A.G.); (Q.-X.T.); (J.-Q.W.); (C.-Y.C.); (Y.Y.); (A.J.C.)
| | - Zhe-Sheng Chen
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (S.N.); (Y.-F.F.); (N.A.G.); (Q.-X.T.); (J.-Q.W.); (C.-Y.C.); (Y.Y.); (A.J.C.)
| |
Collapse
|