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Gujarati NA, Chow AK, Mallipattu SK. Central role of podocytes in mediating cellular cross talk in glomerular health and disease. Am J Physiol Renal Physiol 2024; 326:F313-F325. [PMID: 38205544 DOI: 10.1152/ajprenal.00328.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 12/20/2023] [Accepted: 12/20/2023] [Indexed: 01/12/2024] Open
Abstract
Podocytes are highly specialized epithelial cells that surround the capillaries of the glomeruli in the kidney. Together with the glomerular endothelial cells, these postmitotic cells are responsible for regulating filtrate from the circulating blood with their organized network of interdigitating foot processes that wrap around the glomerular basement membrane. Although podocyte injury and subsequent loss is the hallmark of many glomerular diseases, recent evidence suggests that the cell-cell communication between podocytes and other glomerular and nonglomerular cells is critical for the development and progression of kidney disease. In this review, we highlight these key cellular pathways of communication and how they might be a potential target for therapy in glomerular disease. We also postulate that podocytes might serve as a central hub for communication in the kidney under basal conditions and in response to cellular stress, which may have implications for the development and progression of glomerular diseases.
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Affiliation(s)
- Nehaben A Gujarati
- Division of Nephrology, Department of Medicine, Stony Brook University, Stony Brook, New York, United States
| | - Andrew K Chow
- Division of Nephrology, Department of Medicine, Stony Brook University, Stony Brook, New York, United States
| | - Sandeep K Mallipattu
- Division of Nephrology, Department of Medicine, Stony Brook University, Stony Brook, New York, United States
- Renal Section, Northport Veterans Affairs Medical Center, Northport, New York, United States
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Piret SE, Attallah AA, Gu X, Guo Y, Gujarati NA, Henein J, Zollman A, Hato T, Ma'ayan A, Revelo MP, Dickman KG, Chen CH, Shun CT, Rosenquist TA, He JC, Mallipattu SK. Loss of proximal tubular transcription factor Krüppel-like factor 15 exacerbates kidney injury through loss of fatty acid oxidation. Kidney Int 2021; 100:1250-1267. [PMID: 34634362 PMCID: PMC8608748 DOI: 10.1016/j.kint.2021.08.031] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 08/06/2021] [Accepted: 08/20/2021] [Indexed: 11/24/2022]
Abstract
Loss of fatty acid β-oxidation (FAO) in the proximal tubule is a critical mediator of acute kidney injury and eventual fibrosis. However, transcriptional mediators of FAO in proximal tubule injury remain understudied. Krüppel-like factor 15 (KLF15), a highly enriched zinc-finger transcription factor in the proximal tubule, was significantly reduced in proximal tubule cells after aristolochic acid I (AAI) treatment, a proximal tubule-specific injury model. Proximal tubule specific knockout of Klf15 exacerbated proximal tubule injury and kidney function decline compared to control mice during the active phase of AAI treatment, and after ischemia-reperfusion injury. Furthermore, along with worsening proximal tubule injury and kidney function decline, knockout mice exhibited increased kidney fibrosis as compared to control mice during the remodeling phase after AAI treatment. RNA-sequencing of kidney cortex demonstrated increased transcripts involved in immune system and integrin signaling pathways and decreased transcripts encompassing metabolic pathways, specifically FAO, and PPARα signaling, in knockout versus control mice after AAI treatment. In silico and experimental chromatin immunoprecipitation studies collectively demonstrated that KLF15 occupied the promoter region of key FAO genes, CPT1A and ACAA2, in close proximity to transcription factor PPARα binding sites. While the loss of Klf15 reduced the expression of Cpt1a and Acaa2 and led to compromised FAO, induction of KLF15 partially rescued loss of FAO in AAI-treated cells. Klf15, Ppara, Cpt1a, and Acaa2 expression was also decreased in other mouse kidney injury models. Tubulointerstitial KLF15 independently correlated with eGFR, PPARA and CPT1A appearance in expression arrays from human kidney biopsies. Thus, proximal tubule-specific loss of Klf15 exacerbates acute kidney injury and fibrosis, likely due to loss of interaction with PPARα leading to loss of FAO gene transcription.
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Affiliation(s)
- Sian E Piret
- Division of Nephrology, Department of Medicine, Stony Brook University, Stony Brook, New York, USA
| | - Ahmed A Attallah
- Division of Nephrology, Department of Medicine, Stony Brook University, Stony Brook, New York, USA
| | - Xiangchen Gu
- Division of Nephrology, Department of Medicine, Stony Brook University, Stony Brook, New York, USA; Department of Nephrology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai, China
| | - Yiqing Guo
- Division of Nephrology, Department of Medicine, Stony Brook University, Stony Brook, New York, USA
| | - Nehaben A Gujarati
- Division of Nephrology, Department of Medicine, Stony Brook University, Stony Brook, New York, USA
| | - Justina Henein
- Division of Nephrology, Department of Medicine, Stony Brook University, Stony Brook, New York, USA
| | - Amy Zollman
- Department of Medicine, Indiana University, Indianapolis, Indiana, USA
| | - Takashi Hato
- Department of Medicine, Indiana University, Indianapolis, Indiana, USA
| | - Avi Ma'ayan
- Department of Pharmacological Sciences, Mount Sinai Center for Bioinformatics, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Monica P Revelo
- Department of Pathology, University of Utah, Salt Lake City, Utah, USA
| | - Kathleen G Dickman
- Department of Pharmacological Sciences, Stony Brook University, Stony Brook, New York, USA
| | - Chung-Hsin Chen
- Department of Urology, National Taiwan University Hospital, Taipei, Taiwan
| | - Chia-Tung Shun
- Department of Forensic Medicine and Pathology, National Taiwan University Hospital, Taipei, Taiwan
| | - Thomas A Rosenquist
- Department of Pharmacological Sciences, Stony Brook University, Stony Brook, New York, USA
| | - John C He
- Department of Pharmacological Sciences, Mount Sinai Center for Bioinformatics, Icahn School of Medicine at Mount Sinai, New York, New York, USA; Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Sandeep K Mallipattu
- Division of Nephrology, Department of Medicine, Stony Brook University, Stony Brook, New York, USA; Renal Division, Northport VA Medical Center, Northport, New York, USA.
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3
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Gujarati NA, Leonardo AR, Vasquez JM, Guo Y, Frimpong BO, Fozilov E, Revelo MP, Daehn IS, He JC, Bogenhagen D, Mallipattu SK. Loss of Functional SCO2 Attenuates Oxidative Stress in Diabetic Kidney Disease. Diabetes 2021; 71:db210316. [PMID: 34702781 PMCID: PMC8763871 DOI: 10.2337/db21-0316] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Accepted: 10/18/2021] [Indexed: 11/13/2022]
Abstract
Increased oxidative stress in glomerular endothelial cells (GEnCs) contributes to early diabetic kidney disease (DKD). While mitochondrial respiratory complex IV activity is reduced in DKD, it remains unclear whether this is a driver or a consequence of oxidative stress in GEnCs. Synthesis of cytochrome C oxidase 2 (SCO2), a key metallochaperone in the electron transport chain, is critical to the biogenesis and assembly of subunits required for functional respiratory complex IV activity. Here, we investigated the effects of Sco2 hypomorphs (Sco2 KO/KI , Sco2 KI/KI ), with a functional loss of SCO2, in the progression of DKD using a murine model of Type II Diabetes Mellitus, db/db mice. Diabetic Sco2 KO/KI and Sco2 KI/KI hypomorphs exhibited a reduction in complex IV activity, but an improvement in albuminuria, serum creatinine, and histomorphometric evidence of early DKD as compared to db/db mice. Single-nucleus RNA sequencing with gene set enrichment analysis of differentially expressed genes in the endothelial cluster of Sco2 KO/KI ;db/db mice demonstrated an increase in genes involved in VEGF-VEGFR2 signaling and reduced oxidative stress as compared to db/db mice. These data suggest that reduced complex IV activity due to a loss of functional SCO2 might be protective in GEnCs in early DKD.
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Affiliation(s)
- Nehaben A Gujarati
- Division of Nephrology, Department of Medicine, Stony Brook University, Stony Brook, NY
| | - Alexandra R Leonardo
- Division of Nephrology, Department of Medicine, Stony Brook University, Stony Brook, NY
| | - Jessica M Vasquez
- Division of Nephrology, Department of Medicine, Stony Brook University, Stony Brook, NY
| | - Yiqing Guo
- Division of Nephrology, Department of Medicine, Stony Brook University, Stony Brook, NY
| | - Bismark O Frimpong
- Division of Nephrology, Department of Medicine, Stony Brook University, Stony Brook, NY
| | - Elbek Fozilov
- Division of Nephrology, Department of Medicine, Stony Brook University, Stony Brook, NY
| | - Monica P Revelo
- Department of Pathology, University of Utah, Salt Lake City, UT
| | - Ilse S Daehn
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY
| | - John C He
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Daniel Bogenhagen
- Department of Pharmacological Sciences, Stony Brook University, Stony Brook, NY
| | - Sandeep K Mallipattu
- Division of Nephrology, Department of Medicine, Stony Brook University, Stony Brook, NY
- Renal Section, Northport VA Medical Center, Northport, NY
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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] [What about the content of this article? (0)] [Affiliation(s)] [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.
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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.)
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Narayanan S, Gujarati NA, Wang JQ, Wu ZX, Koya J, Cui Q, Korlipara VL, Ashby CR, Chen ZS. The Novel Benzamide Derivative, VKNG-2, Restores the Efficacy of Chemotherapeutic Drugs in Colon Cancer Cell Lines by Inhibiting the ABCG2 Transporter. Int J Mol Sci 2021; 22:2463. [PMID: 33671108 PMCID: PMC7957563 DOI: 10.3390/ijms22052463] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 02/22/2021] [Accepted: 02/24/2021] [Indexed: 12/12/2022] Open
Abstract
The overexpression of ATP-binding cassette transporter, ABCG2, plays an important role in mediating multidrug resistance (MDR) in certain types of cancer cells. ABCG2-mediated MDR can significantly attenuate or abrogate the efficacy of anticancer drugs by increasing their efflux from cancer cells. In this study, we determined the efficacy of the novel benzamide derivative, VKNG-2, to overcome MDR due to the overexpression of the ABCG2 transporter in the colon cancer cell line, S1-M1-80. In vitro, 5 μM of VKNG-2 reversed the resistance of S1-M1-80 cell line to mitoxantrone (70-fold increase in efficacy) or SN-38 (112-fold increase in efficacy). In contrast, in vitro, 5 μM of VKNG-2 did not significantly alter either the expression of ABCG2, AKT, and PI3K p110β protein or the subcellular localization of the ABCG2 protein compared to colon cancer cells incubated with the vehicle. Molecular docking data indicated that VKNG-2 had a high docking score (-10.2 kcal/mol) for the ABCG2 transporter substrate-drug binding site whereas it had a low affinity on ABCB1 and ABCC1 transporters. Finally, VKNG-2 produced a significant concentration-dependent increase in ATPase activity (EC50 = 2.3 µM). In conclusion, our study suggests that in vitro, VKNG-2 reverses the resistance of S1-M1-80, a cancer cell line resistant to mitoxantrone and SN-38, by inhibiting the efflux function of the ABCG2 transporter.
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Affiliation(s)
- Silpa Narayanan
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (S.N.); (N.A.G.); (J.-Q.W.); (Z.-X.W.); (J.K.); (Q.C.); (V.L.K.); (C.R.A.J.)
| | - Nehaben A. Gujarati
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (S.N.); (N.A.G.); (J.-Q.W.); (Z.-X.W.); (J.K.); (Q.C.); (V.L.K.); (C.R.A.J.)
| | - Jing-Quan Wang
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (S.N.); (N.A.G.); (J.-Q.W.); (Z.-X.W.); (J.K.); (Q.C.); (V.L.K.); (C.R.A.J.)
| | - Zhuo-Xun Wu
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (S.N.); (N.A.G.); (J.-Q.W.); (Z.-X.W.); (J.K.); (Q.C.); (V.L.K.); (C.R.A.J.)
| | - Jagadish Koya
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (S.N.); (N.A.G.); (J.-Q.W.); (Z.-X.W.); (J.K.); (Q.C.); (V.L.K.); (C.R.A.J.)
| | - Qingbin Cui
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (S.N.); (N.A.G.); (J.-Q.W.); (Z.-X.W.); (J.K.); (Q.C.); (V.L.K.); (C.R.A.J.)
- School of Pharmaceutical Science, 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.); (N.A.G.); (J.-Q.W.); (Z.-X.W.); (J.K.); (Q.C.); (V.L.K.); (C.R.A.J.)
| | - Charles R. Ashby
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (S.N.); (N.A.G.); (J.-Q.W.); (Z.-X.W.); (J.K.); (Q.C.); (V.L.K.); (C.R.A.J.)
| | - Zhe-Sheng Chen
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (S.N.); (N.A.G.); (J.-Q.W.); (Z.-X.W.); (J.K.); (Q.C.); (V.L.K.); (C.R.A.J.)
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Gujarati NA, Vasquez JM, Bogenhagen DF, Mallipattu SK. The complicated role of mitochondria in the podocyte. Am J Physiol Renal Physiol 2020; 319:F955-F965. [PMID: 33073585 PMCID: PMC7792691 DOI: 10.1152/ajprenal.00393.2020] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 10/13/2020] [Accepted: 10/13/2020] [Indexed: 02/06/2023] Open
Abstract
Mitochondria play a complex role in maintaining cellular function including ATP generation, generation of biosynthetic precursors for macromolecules, maintenance of redox homeostasis, and metabolic waste management. Although the contribution of mitochondrial function in various kidney diseases has been studied, there are still avenues that need to be explored under healthy and diseased conditions. Mitochondrial damage and dysfunction have been implicated in experimental models of podocytopathy as well as in humans with glomerular diseases resulting from podocyte dysfunction. Specifically, in the podocyte, metabolism is largely driven by oxidative phosphorylation or glycolysis depending on the metabolic needs. These metabolic needs may change drastically in the presence of podocyte injury in glomerular diseases such as diabetic kidney disease or focal segmental glomerulosclerosis. Here, we review the role of mitochondria in the podocyte and the factors regulating its function at baseline and in a variety of podocytopathies to identify potential targets for therapy.
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Affiliation(s)
- Nehaben A Gujarati
- Division of Nephrology, Department of Medicine, Renaissance School of Medicine at Stony Brook University, Stony Brook, New York
| | - Jessica M Vasquez
- Division of Nephrology, Department of Medicine, Renaissance School of Medicine at Stony Brook University, Stony Brook, New York
| | - Daniel F Bogenhagen
- Department of Pharmacological Sciences, Renaissance School of Medicine at Stony Brook University, Stony Brook, New York
| | - Sandeep K Mallipattu
- Division of Nephrology, Department of Medicine, Renaissance School of Medicine at Stony Brook University, Stony Brook, New York
- Renal Section, Northport Department of Veterans Affairs Medical Center, Northport, New York
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Tessler M, Gaffney JP, Oliveira AG, Guarnaccia A, Dobi KC, Gujarati NA, Galbraith M, Mirza JD, Sparks JS, Pieribone VA, Wood RJ, Gruber DF. A putative chordate luciferase from a cosmopolitan tunicate indicates convergent bioluminescence evolution across phyla. Sci Rep 2020; 10:17724. [PMID: 33082360 PMCID: PMC7576829 DOI: 10.1038/s41598-020-73446-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 09/10/2020] [Indexed: 01/17/2023] Open
Abstract
Pyrosomes are tunicates in the phylum Chordata, which also contains vertebrates. Their gigantic blooms play important ecological and biogeochemical roles in oceans. Pyrosoma, meaning "fire-body", derives from their brilliant bioluminescence. The biochemistry of this light production is unknown, but has been hypothesized to be bacterial in origin. We found that mixing coelenterazine-a eukaryote-specific luciferin-with Pyrosoma atlanticum homogenate produced light. To identify the bioluminescent machinery, we sequenced P. atlanticum transcriptomes and found a sequence match to a cnidarian luciferase (RLuc). We expressed this novel luciferase (PyroLuc) and, combined with coelenterazine, it produced light. A similar gene was recently predicted from a bioluminescent brittle star, indicating that RLuc-like luciferases may have evolved convergently from homologous dehalogenases across phyla (Cnidaria, Echinodermata, and Chordata). This report indicates that a widespread gene may be able to functionally converge, resulting in bioluminescence across animal phyla, and describes and characterizes the first putative chordate luciferase.
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Affiliation(s)
- Michael Tessler
- Sackler Institute for Comparative Genomics, American Museum of Natural History, New York, NY, 10024, USA. .,Department of Biology, St. Francis College, Brooklyn, NY, USA.
| | - Jean P Gaffney
- Department of Natural Sciences, Baruch College, City University of New York, New York, NY, 10010, USA. .,The Graduate Center, PhD Program in Biology, City University of New York, New York, USA.
| | - Anderson G Oliveira
- Departamento de Oceanografia Física, Química e, Geológica, Instituto Oceanográfico, Universidade de São Paulo, São Paulo, 05508-120, Brazil
| | - Andrew Guarnaccia
- Department of Natural Sciences, Baruch College, City University of New York, New York, NY, 10010, USA.,The Graduate Center, PhD Program in Biology, City University of New York, New York, USA
| | - Krista C Dobi
- Department of Natural Sciences, Baruch College, City University of New York, New York, NY, 10010, USA.,The Graduate Center, PhD Program in Biology, City University of New York, New York, USA
| | - Nehaben A Gujarati
- Department of Natural Sciences, Baruch College, City University of New York, New York, NY, 10010, USA
| | - Moira Galbraith
- Institute of Ocean Sciences, 9860 West Saanich Road, P.O. Box 6000, Sidney, BC, V8L 4B2, Canada
| | - Jeremy D Mirza
- Departamento de Oceanografia Física, Química e, Geológica, Instituto Oceanográfico, Universidade de São Paulo, São Paulo, 05508-120, Brazil.,Departamento de Química, Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Universidade Federal de São Paulo, Diadema, São Paulo, Brazil
| | - John S Sparks
- Sackler Institute for Comparative Genomics, American Museum of Natural History, New York, NY, 10024, USA.,Division of Vertebrate Zoology, Department of Ichthyology, American Museum of Natural History, New York, NY, 10024, USA
| | | | - Robert J Wood
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA, USA
| | - David F Gruber
- Sackler Institute for Comparative Genomics, American Museum of Natural History, New York, NY, 10024, USA. .,Department of Natural Sciences, Baruch College, City University of New York, New York, NY, 10010, USA. .,The Graduate Center, PhD Program in Biology, City University of New York, New York, USA.
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8
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Narayanan S, Gujarati NA, Teng Q, Wang J, Cai CY, Yang Y, Chintalapati AJ, Korlipara VL, Chen ZS. Abstract 3010: VKNG 1 reverses multidrug resistance by inhibiting ABCG2 mediated drug transport in vitro and in vivo. Cancer Res 2020. [DOI: 10.1158/1538-7445.am2020-3010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
The emergence of multidrug resistance (MDR) to chemotherapeutic drugs continues to be a major problem in the treatment of cancer. Drug resistance, either intrinsic or extrinsic is responsible for the recurrence of cancer related deaths. Understanding the drug resistant mechanisms of cancer is necessary for developing an effective treatment. ATP-binding cassette transporters are the integral transmembrane proteins which play a role in the expulsion of chemotherapeutic drugs, make the MDR more complicated. Breast cancer resistance protein (BCRP/ABCG2) is one among the MDR transporters with a wide range of substrates and overexpressed in various kinds of cancers like breast, colon, ovarian and lung cancers. An analysis of various new compounds leads to the
discovery of VKNG-1 that selectively inhibits ABCG2 transporter and reverses the resistance to chemotherapeutic drugs both in vitro and in vivo. VKNG-1 selectively causes the ABCG2 inhibition and sensitizes the ABCG2 overexpressing resistant cells to the substrate anti-cancer drugs. The mechanism of action of VKNG-1 is its ability to prevent the efflux function of ABCG2 and thereby increases the intracellular accumulation of substrate drugs. In addition, there was a decrease in the expression of ABCG2 at both mRNA and protein level, but the protein translocation did not happen in the presence of VKNG-1. The induced-fit docking studies suggest the existence of strong interactions between VKNG-1and BCRP protein. In addition, VKNG-1 maintains the anti-cancer effect of irinotecan in ABCG2 overexpressing tumor xenografts and combination of VKNG-1 and irinotecan greatly inhibited the growth of S1-M1-80 resistant tumors. These results suggest that potent and selective action of VKNG-1 makes it as a promising treatment option in overcoming drug resistance in cancer.
Citation Format: Silpa Narayanan, Nehaben A. Gujarati, Qiuxu Teng, Jingquan Wang, Chao-Yun Cai, Yuqi Yang, Anirudh Jaganna Chintalapati, Vijaya L. Korlipara, Zhe-Sheng Chen. VKNG 1 reverses multidrug resistance by inhibiting ABCG2 mediated drug transport in vitro and in vivo [abstract]. In: Proceedings of the Annual Meeting of the American Association for Cancer Research 2020; 2020 Apr 27-28 and Jun 22-24. Philadelphia (PA): AACR; Cancer Res 2020;80(16 Suppl):Abstract nr 3010.
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Gujarati NA, Undem BJ, Korlipara VL. Design, Synthesis, and Evaluation of Isoquinoline Ureas as TRPV1 Antagonists. Med Chem 2020; 16:202-211. [DOI: 10.2174/1573406415666190626130453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 05/06/2019] [Accepted: 06/09/2019] [Indexed: 11/22/2022]
Abstract
Background:
The inhibition of transient receptor potential vanilloid receptor 1
(TRPV1) has emerged as a novel approach for the treatment of various pain states. Pyrrolidinyl
urea, SB 705498 with pKb = 7.3 in guinea pig TRPV1 receptor has been investigated in Phase II
clinical trials for pain and chronic cough. Another heteroaryl urea derivative, A-425619 1, has
been reported to be a potent and selective TRPV1 antagonist of capsaicin-evoked receptor activation
with an IC50 value of 4 nM in hTRPV1.
Objective:
A series of thirteen A-425619 1 analogues with modifications centered around the Cregion
were synthesized to understand the binding site characteristics of TRPV1 receptors.
Method:
We synthesized a series of isoquinoline ureas and evaluated their antagonist potency using
smooth muscle assay using guinea pig trachea along with the evaluation of the molecular properties
and molecular modeling using CoMFA studies.
Results:
p-Chloro 4, p-bromo 5, m-isothiocyanate 15, and p-isothiocyanate 16 derivatives were
found to be the most potent members of the series with pKb values in the range of 7.3-7.4 in the
functional assay using guinea pig trachea. The lead compound A-425619 1 exhibited a pKb value
of 8.1 in this assay.
Conclusion:
The para-substituted analogues were found to be more potent than the ortho- and
meta- analogues in the biological assay. This observation was further supported by molecular
modeling studies using CoMFA.
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Affiliation(s)
- Nehaben A. Gujarati
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, NY 11439, United States
| | - Bradley J. Undem
- Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD 21224, United States
| | - Vijaya L. Korlipara
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, NY 11439, United States
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Tessler M, Gaffney JP, Crawford JM, Trautman E, Gujarati NA, Alatalo P, Pieribone VA, Gruber DF. Luciferin production and luciferase transcription in the bioluminescent copepod Metridia lucens. PeerJ 2018; 6:e5506. [PMID: 30233994 PMCID: PMC6140675 DOI: 10.7717/peerj.5506] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Accepted: 07/29/2018] [Indexed: 12/15/2022] Open
Abstract
Bioluminescent copepods are often the most abundant marine zooplankton and play critical roles in oceanic food webs. Metridia copepods exhibit particularly bright bioluminescence, and the molecular basis of their light production has just recently begun to be explored. Here we add to this body of work by transcriptomically profiling Metridia lucens, a common species found in temperate, northern, and southern latitudes. In this previously molecularly-uncharacterized species, we find the typical luciferase paralog gene set found in Metridia. More surprisingly, we recover noteworthy putative luciferase sequences that had not been described from Metridia species, indicating that bioluminescence produced by these copepods may be more complex than previously known. This includes another copepod luciferase, as well as one from a shrimp. Furthermore, feeding experiments using mass spectrometry and 13C labelled L-tyrosine and L-phenylalanine firmly establish that M. lucens produces its own coelenterazine luciferin rather than acquiring it through diet. This coelenterazine synthesis has only been directly confirmed in one other copepod species.
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Affiliation(s)
- Michael Tessler
- Sackler Institute for Comparative Genomics, American Museum of Natural History, New York, NY, USA
| | - Jean P Gaffney
- Department of Natural Sciences, City University of New York, Bernard M. Baruch College, New York, NY, United States of America.,Biology, City University of New York, Graduate School and University Center, New York, NY, United States of America
| | - Jason M Crawford
- Department of Chemistry, Yale University, New Haven, CT, United States of America
| | - Eric Trautman
- Department of Chemistry, Yale University, New Haven, CT, United States of America
| | - Nehaben A Gujarati
- Department of Natural Sciences, City University of New York, Bernard M. Baruch College, New York, NY, United States of America
| | - Philip Alatalo
- Biology Department, Woods Hole Oceanographic Institution, Woods Hole, MA, United States of America
| | - Vincent A Pieribone
- Cellular and Molecular Physiology, Yale University, New Haven, CT, United States of America
| | - David F Gruber
- Department of Natural Sciences, City University of New York, Bernard M. Baruch College, New York, NY, United States of America.,Biology, City University of New York, Graduate School and University Center, New York, NY, United States of America
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Gujarati NA, Zeng L, Gupta P, Chen ZS, Korlipara VL. Design, synthesis and biological evaluation of benzamide and phenyltetrazole derivatives with amide and urea linkers as BCRP inhibitors. Bioorg Med Chem Lett 2017; 27:4698-4704. [PMID: 28916341 DOI: 10.1016/j.bmcl.2017.09.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 09/01/2017] [Accepted: 09/02/2017] [Indexed: 12/18/2022]
Abstract
Breast cancer resistant protein (BCRP/ABCG2), a 72kDa plasma membrane transporter protein is a member of ABC transporter superfamily. Increased expression of BCRP causes increased efflux and therefore, reduced intracellular accumulation of many unrelated chemotherapeutic agents leading to multidrug resistance (MDR). A series of 31 benzamide and phenyltetrazole derivatives with amide and urea linkers has been synthesized to serve as potential BCRP inhibitors in order to overcome BCRP-mediated MDR. The target derivatives were tested for their cytotoxicity and reversal effects in human non-small cell lung cancer cell line H460 and mitoxantrone resistant cell line H460/MX20 using the MTT assay. In the benzamide series, compounds 6 and 7 exhibited a fold resistance of 1.51 and 1.62, respectively at 10µM concentration which is similar to that of FTC, a known BCRP inhibitor. Compounds 27 and 31 were the most potent analogues in the phenyltetrazole series with amide linker with a fold resistance of 1.39 and 1.32, respectively at 10µM concentration. For the phenyltetrazole series with urea linker, 38 exhibited a fold resistance of 1.51 which is similar than that of FTC and is the most potent compound in this series. The target compounds did not exhibit reversal effect in P-gp overexpressing resistant cell line SW620/Ad300 suggesting that they are selective BCRP inhibitors.
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Affiliation(s)
- Nehaben A Gujarati
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, NY 11439, United States
| | - Leli Zeng
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, NY 11439, United States
| | - Pranav Gupta
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, NY 11439, United States
| | - Zhe-Sheng Chen
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, NY 11439, United States
| | - Vijaya L Korlipara
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, NY 11439, United States.
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