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Carreira ASA, Ravera S, Zucal C, Thongon N, Irene C, Astigiano C, Bertola N, Buongiorno A, Roccuzzo M, Bisio A, Pardini B, Nencioni A, Bruzzone S, Provenzani A. Mitochondrial rewiring drives metabolic adaptation to NAD(H) shortage in triple negative breast cancer cells. Neoplasia 2023; 41:100903. [PMID: 37148658 DOI: 10.1016/j.neo.2023.100903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 04/27/2023] [Accepted: 04/27/2023] [Indexed: 05/08/2023]
Abstract
Nicotinamide phosphoribosyltransferase (NAMPT) is a key metabolic enzyme in NAD+ synthesis pathways and is found upregulated in several tumors, depicting NAD(H) lowering agents, like the NAMPT inhibitor FK866, as an appealing approach for anticancer therapy. Like other small molecules, FK866 triggers chemoresistance, observed in several cancer cellular models, which can prevent its clinical application. The molecular mechanisms sustaining the acquired of resistance to FK866 were studied in a model of triple negative breast cancer (MDA-MB-231 parental - PAR), exposed to increasing concentrations of the small molecule (MDA-MB-231 resistant - RES). RES cells are not sensitive to verapamil or cyclosporin A, excluding a potential role of increased efflux pumps activity as a mechanism of resistance. Similarly, the silencing of the enzyme Nicotinamide Riboside Kinase 1 (NMRK1) in RES cells does not increase FK866 toxicity, excluding this pathway as a compensatory mechanism of NAD+ production. Instead, Seahorse metabolic analysis revealed an increased mitochondrial spare respiratory capacity in RES cells. These cells presented a higher mitochondrial mass compared to the FK866-sensitive counterparts, as well as an increased consumption of pyruvate and succinate for energy production. Interestingly, co-treatment of PAR cells with FK866 and the mitochondrial pyruvate carrier (MPC) inhibitors UK5099 or rosiglitazone, as well as with the transient silencing of MPC2 but not of MPC1, induces a FK866-resistant phenotype. Taken together, these results unravel novel mechanisms of cell plasticity to counteract FK866 toxicity, that, besides the previously described LDHA dependency, rely on mitochondrial rewiring at functional and energetic levels.
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Affiliation(s)
| | - Silvia Ravera
- Department of Experimental Medicine, University of Genoa, Genoa, Italy; Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Italy; Italian Institute for Genomic Medicine (IIGM), Candiolo, Italy.
| | - Chiara Zucal
- Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, Trento, Italy.
| | - Natthakan Thongon
- Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, Trento, Italy; Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Italy; Italian Institute for Genomic Medicine (IIGM), Candiolo, Italy.
| | - Caffa Irene
- Department of Internal Medicine, University of Genoa, Italy; IRCCS Ospedale Policlinico San Martino, Genoa, Italy.
| | - Cecilia Astigiano
- Department of Experimental Medicine, University of Genoa, Genoa, Italy.
| | - Nadia Bertola
- Department of Experimental Medicine, University of Genoa, Genoa, Italy.
| | - Arianna Buongiorno
- Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, Trento, Italy.
| | - Michela Roccuzzo
- Advanced Imaging Core Facility, Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, Trento, Italy.
| | - Alessandra Bisio
- Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, Trento, Italy.
| | - Barbara Pardini
- Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Italy; Italian Institute for Genomic Medicine (IIGM), Candiolo, Italy.
| | - Alessio Nencioni
- Department of Internal Medicine, University of Genoa, Italy; IRCCS Ospedale Policlinico San Martino, Genoa, Italy.
| | - Santina Bruzzone
- Department of Experimental Medicine, University of Genoa, Genoa, Italy.
| | - Alessandro Provenzani
- Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, Trento, Italy.
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2
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Tsuda K, Kurasaka C, Ogino Y, Sato A. Genomic and biological aspects of resistance to selective poly(ADP-ribose) glycohydrolase inhibitor PDD00017273 in human colorectal cancer cells. Cancer Rep (Hoboken) 2023; 6:e1709. [PMID: 36053937 PMCID: PMC9939995 DOI: 10.1002/cnr2.1709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 07/26/2022] [Accepted: 08/10/2022] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Poly(ADP-ribose) glycohydrolase (PARG) is a key enzyme in poly(ADP-ribose) (PAR) metabolism and a potential anticancer target. Many drug candidates have been developed to inhibit its enzymatic activity. Additionally, PDD00017273 is an effective and selective inhibitor of PARG at the first cellular level. AIMS Using human colorectal cancer (CRC) HCT116 cells, we investigated the molecular mechanisms and tumor biological aspects of the resistance to PDD00017273. METHODS AND RESULTS HCT116RPDD , a variant of the human CRC cell line HCT116, exhibits resistance to the PARG inhibitor PDD00017273. HCT116RPDD cells contained specific mutations of PARG and PARP1, namely, PARG mutation Glu352Gln and PARP1 mutation Lys134Asn, as revealed by exome sequencing. Notably, the levels of PARG protein were comparable between HCT116RPDD and HCT116. In contrast, the PARP1 protein levels in HCT116RPDD were significantly lower than those in HCT116. Consequently, the levels of intracellular poly(ADP-ribosyl)ation were elevated in HCT116RPDD compared to HCT116. Interestingly, HCT116RPDD cells did not exhibit cross-resistance to COH34, an additional PARG inhibitor. CONCLUSION Our findings suggest that the mutated PARG acquires PDD00017273 resistance due to structural modifications. In addition, our findings indicate that PDD00017273 resistance induces mutation and PARP downregulation. These discoveries collectively provide a better understanding of the anticancer candidate PARG inhibitors in terms of resistance mechanisms and anticancer strategies.
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Affiliation(s)
- Kaede Tsuda
- Department of Biochemistry and Molecular Biology, Faculty of Pharmaceutical SciencesTokyo University of ScienceChibaJapan
| | - Chinatsu Kurasaka
- Department of Biochemistry and Molecular Biology, Faculty of Pharmaceutical SciencesTokyo University of ScienceChibaJapan
| | - Yoko Ogino
- Department of Biochemistry and Molecular Biology, Faculty of Pharmaceutical SciencesTokyo University of ScienceChibaJapan
- Department of Gene Regulation, Faculty of Pharmaceutical SciencesTokyo University of ScienceChibaJapan
| | - Akira Sato
- Department of Biochemistry and Molecular Biology, Faculty of Pharmaceutical SciencesTokyo University of ScienceChibaJapan
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3
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Deng Y, Hu B, Miao Y, Wang J, Zhang S, Wan H, Wu Z, Lv Y, Feng J, Ji N, Park D, Hao S. A Nicotinamide Phosphoribosyltransferase Inhibitor, FK866, Suppresses the Growth of Anaplastic Meningiomas and Inhibits Immune Checkpoint Expression by Regulating STAT1. Front Oncol 2022; 12:836257. [PMID: 35515130 PMCID: PMC9065474 DOI: 10.3389/fonc.2022.836257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 03/22/2022] [Indexed: 11/18/2022] Open
Abstract
Anaplastic meningioma is classified as a World Health Organization (WHO) grade III tumor and shows a strong tendency to recur. Although the incidence of anaplastic meningioma is low, the high rate of recurrence and death still makes treatment a challenge. A proteomics analysis was performed to investigate the differentially expressed proteins between anaplastic meningiomas and fibrous meningiomas by micro-LC-MS/MS. The key metabolic enzyme nicotinamide phosphoribosyltransferase (NAMPT) showed upregulated expression in anaplastic meningiomas. However, targeting NAMPT to treat anaplastic meningiomas has not been reported. In vitro, NAMPT inhibitor -FK866 reduced the viability of anaplastic meningiomas by inducing cell cycle arrest at the G2/M phase. Intriguingly, the NAMPT inhibitor -FK866 decreased the protein expression of immune checkpoints PD-L1 and B7-H3 by down-regulating the STAT1 and p-STAT1 expression in vitro. Furthermore, FK866 suppressed the growth of anaplastic meningiomas in an in vivo xenograft model. The expression of Ki-67 and immune checkpoint proteins (PD-L1 and B7-H3) showed significant differences between the group treated with FK866 and the control group treated with DMSO. In conclusion, the expression of NAMPT, which plays a crucial role in energy metabolism, was upregulated in anaplastic meningiomas. The NAMPT inhibitor -FK866 significantly suppressed the growth of anaplastic meningiomas in vitro and in vivo. More strikingly, FK866 potently inhibited immune checkpoint protein (PD-L1 and B7-H3) expression by regulating STAT1 in vitro and in vivo. Our results demonstrated that NAMPT inhibitors could potentially be an effective treatment method for patients suffering from anaplastic meningiomas.
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Affiliation(s)
- Yuxuan Deng
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Boyi Hu
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, China
| | - Yazhou Miao
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Jing Wang
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, China
| | - Shaodong Zhang
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, China
| | - Hong Wan
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, China
| | - Zhen Wu
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Yifan Lv
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Jie Feng
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, China
| | - Nan Ji
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Deric Park
- Department of Neurology, University of Chicago Medical Center, Chicago, IL, United States
| | - Shuyu Hao
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
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4
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Kurasaka C, Nishizawa N, Ogino Y, Sato A. Trapping of 5-Fluorodeoxyuridine Monophosphate by Thymidylate Synthase Confers Resistance to 5-Fluorouracil. ACS OMEGA 2022; 7:6046-6052. [PMID: 35224365 PMCID: PMC8868108 DOI: 10.1021/acsomega.1c06394] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Accepted: 01/27/2022] [Indexed: 06/14/2023]
Abstract
The major metabolite of the anticancer agent 5-fluorouracil (5-FU) is 5-fluorodeoxyuridine monophosphate (FdUMP), which is a potent inhibitor of thymidylate synthase (TS). Recently, we hypothesized that 5-FU-resistant colorectal cancer (CRC) cells have increased levels of TS protein relative to 5-FU-sensitive CRC cells and use a fraction of their TS to trap FdUMP, which results in resistance to 5-FU. In this study, we analyzed the difference between the regulation of the balance of the free, active form of TS and the inactive FdUMP-TS form in 5-FU-resistant HCT116 cells and parental HCT116 cells. Silencing of TYMS, the gene that encodes TS, resulted in greater enhancement of the anticancer effect of 5-FU in the 5-FU-resistant HCT116RF10 cells than in the parental HCT116 cells. In addition, the trapping of FdUMP by TS was more effective in the 5-FU-resistant HCT116RF10 cells than in the parental HCT116 cells. Our observations suggest that the regulation of the balance between the storage of the active TS form and the accumulation of FdUMP-TS is responsible for direct resistance to 5-FU. The findings provide a better understanding of 5-FU resistance mechanisms and may enable the development of anticancer strategies that reverse the sensitivity of 5-FU resistance in CRC cells.
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Affiliation(s)
- Chinatsu Kurasaka
- Department
of Biochemistry and Molecular Biology, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Nana Nishizawa
- Department
of Biochemistry and Molecular Biology, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Yoko Ogino
- Department
of Biochemistry and Molecular Biology, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
- Department
of Gene Regulation, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Akira Sato
- Department
of Biochemistry and Molecular Biology, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
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Colombo G, Gelardi ELM, Balestrero FC, Moro M, Travelli C, Genazzani AA. Insight Into Nicotinamide Adenine Dinucleotide Homeostasis as a Targetable Metabolic Pathway in Colorectal Cancer. Front Pharmacol 2021; 12:758320. [PMID: 34880756 PMCID: PMC8645963 DOI: 10.3389/fphar.2021.758320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 11/02/2021] [Indexed: 11/13/2022] Open
Abstract
Tumour cells modify their cellular metabolism with the aim to sustain uncontrolled proliferation. Cancer cells necessitate adequate amounts of NAD and NADPH to support several enzymes that are usually overexpressed and/or overactivated. Nicotinamide adenine dinucleotide (NAD) is an essential cofactor and substrate of several NAD-consuming enzymes, such as PARPs and sirtuins, while NADPH is important in the regulation of the redox status in cells. The present review explores the rationale for targeting the key enzymes that maintain the cellular NAD/NADPH pool in colorectal cancer and the enzymes that consume or use NADP(H).
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Affiliation(s)
- Giorgia Colombo
- Department of Pharmaceutical Sciences, Università Del Piemonte Orientale, Novara, Italy
| | | | | | - Marianna Moro
- Department of Pharmaceutical Sciences, Università Del Piemonte Orientale, Novara, Italy
| | - Cristina Travelli
- Department of Drug Sciences, Università Degli Studi di Pavia, Pavia, Italy
| | - Armando A. Genazzani
- Department of Pharmaceutical Sciences, Università Del Piemonte Orientale, Novara, Italy
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6
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Fernandez A, O’Leary C, O’Byrne KJ, Burgess J, Richard DJ, Suraweera A. Epigenetic Mechanisms in DNA Double Strand Break Repair: A Clinical Review. Front Mol Biosci 2021; 8:685440. [PMID: 34307454 PMCID: PMC8292790 DOI: 10.3389/fmolb.2021.685440] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 06/24/2021] [Indexed: 12/14/2022] Open
Abstract
Upon the induction of DNA damage, the chromatin structure unwinds to allow access to enzymes to catalyse the repair. The regulation of the winding and unwinding of chromatin occurs via epigenetic modifications, which can alter gene expression without changing the DNA sequence. Epigenetic mechanisms such as histone acetylation and DNA methylation are known to be reversible and have been indicated to play different roles in the repair of DNA. More importantly, the inhibition of such mechanisms has been reported to play a role in the repair of double strand breaks, the most detrimental type of DNA damage. This occurs by manipulating the chromatin structure and the expression of essential proteins that are critical for homologous recombination and non-homologous end joining repair pathways. Inhibitors of histone deacetylases and DNA methyltransferases have demonstrated efficacy in the clinic and represent a promising approach for cancer therapy. The aims of this review are to summarise the role of histone deacetylase and DNA methyltransferase inhibitors involved in DNA double strand break repair and explore their current and future independent use in combination with other DNA repair inhibitors or pre-existing therapies in the clinic.
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Affiliation(s)
- Alejandra Fernandez
- Centre for Genomics and Personalised Health, School of Biomedical Sciences and Translational Research Institute, Queensland University of Technology (QUT), Brisbane, QLD, Australia
| | - Connor O’Leary
- Centre for Genomics and Personalised Health, School of Biomedical Sciences and Translational Research Institute, Queensland University of Technology (QUT), Brisbane, QLD, Australia
- Princess Alexandra Hospital, Woolloongabba, QLD, Australia
| | - Kenneth J O’Byrne
- Centre for Genomics and Personalised Health, School of Biomedical Sciences and Translational Research Institute, Queensland University of Technology (QUT), Brisbane, QLD, Australia
- Princess Alexandra Hospital, Woolloongabba, QLD, Australia
| | - Joshua Burgess
- Centre for Genomics and Personalised Health, School of Biomedical Sciences and Translational Research Institute, Queensland University of Technology (QUT), Brisbane, QLD, Australia
- Princess Alexandra Hospital, Woolloongabba, QLD, Australia
| | - Derek J Richard
- Centre for Genomics and Personalised Health, School of Biomedical Sciences and Translational Research Institute, Queensland University of Technology (QUT), Brisbane, QLD, Australia
- Princess Alexandra Hospital, Woolloongabba, QLD, Australia
| | - Amila Suraweera
- Centre for Genomics and Personalised Health, School of Biomedical Sciences and Translational Research Institute, Queensland University of Technology (QUT), Brisbane, QLD, Australia
- Princess Alexandra Hospital, Woolloongabba, QLD, Australia
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7
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Kurasaka C, Ogino Y, Sato A. Molecular Mechanisms and Tumor Biological Aspects of 5-Fluorouracil Resistance in HCT116 Human Colorectal Cancer Cells. Int J Mol Sci 2021; 22:ijms22062916. [PMID: 33805673 PMCID: PMC8002131 DOI: 10.3390/ijms22062916] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 02/26/2021] [Accepted: 03/10/2021] [Indexed: 12/24/2022] Open
Abstract
5-Fluorouracil (5-FU) is a cornerstone drug used in the treatment of colorectal cancer (CRC). However, the development of resistance to 5-FU and its analogs remain an unsolved problem in CRC treatment. In this study, we investigated the molecular mechanisms and tumor biological aspects of 5-FU resistance in CRC HCT116 cells. We established an acquired 5-FU-resistant cell line, HCT116RF10. HCT116RF10 cells were cross-resistant to the 5-FU analog, fluorodeoxyuridine. In contrast, HCT116RF10 cells were collaterally sensitive to SN-38 and CDDP compared with the parental HCT16 cells. Whole-exome sequencing revealed that a cluster of genes associated with the 5-FU metabolic pathway were not significantly mutated in HCT116 or HCT116RF10 cells. Interestingly, HCT116RF10 cells were regulated by the function of thymidylate synthase (TS), a 5-FU active metabolite 5-fluorodeoxyuridine monophosphate (FdUMP) inhibiting enzyme. Half of the TS was in an active form, whereas the other half was in an inactive form. This finding indicates that 5-FU-resistant cells exhibited increased TS expression, and the TS enzyme is used to trap FdUMP, resulting in resistance to 5-FU and its analogs.
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Affiliation(s)
- Chinatsu Kurasaka
- Department of Biochemistry and Molecular Biology, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan; (C.K.); (Y.O.)
| | - Yoko Ogino
- Department of Biochemistry and Molecular Biology, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan; (C.K.); (Y.O.)
- Department of Gene Regulation, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Akira Sato
- Department of Biochemistry and Molecular Biology, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan; (C.K.); (Y.O.)
- Correspondence: ; Tel.: +81-4-7121-3620
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8
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Tumor microenvironment derived signature predicting relapse-free survival in I-III cancer and preliminary experiment verification. Int Immunopharmacol 2020; 91:107243. [PMID: 33321467 DOI: 10.1016/j.intimp.2020.107243] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Revised: 11/20/2020] [Accepted: 11/24/2020] [Indexed: 02/07/2023]
Abstract
The recurrence in colon cancer contributed to great difficulties in diagnostic and therapeutic treatment. Tumor microenvironment (TME) gains increasing attention recently. After univariate Cox analysis on relapse-free survival (RFS) and ESTIMATE analysis, WGCNA was further conducted to determine the TME and relapse-related genes in I-III colon cancer. Functional enrichment analyses were conducted. Furthermore, seven genes were screened to build a prognostic signature via LASSO and multivariate Cox analysis. Univariate followed multivariate Cox analysis all showed that the risk group calculated by the signature as a significant predictors. The ROC curves showed great prognostic in the internal training group, internal verification group, and independent external verification group. In the training group, the AUC at 1, 3, and 5 years was 0.737, 0.79, and 0.756. In addition, correlation analysis presented that the signature and genes involved in were significantly associated with the TME. Moreover, 3 of 7 genes (FAM78A, SGIP1, and MMP9) were validated to be associated with PDL1 through qRT-PCR.
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9
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Tanuma SI, Katsuragi K, Oyama T, Yoshimori A, Shibasaki Y, Asawa Y, Yamazaki H, Makino K, Okazawa M, Ogino Y, Sakamoto Y, Nomura M, Sato A, Abe H, Nakamura H, Takahashi H, Tanuma N, Uchiumi F. Structural Basis of Beneficial Design for Effective Nicotinamide Phosphoribosyltransferase Inhibitors. Molecules 2020; 25:molecules25163633. [PMID: 32785052 PMCID: PMC7464552 DOI: 10.3390/molecules25163633] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 08/06/2020] [Accepted: 08/06/2020] [Indexed: 12/21/2022] Open
Abstract
Inhibition of nicotinamide phosphoribosyltransferase (NAMPT) is an attractive therapeutic strategy for targeting cancer metabolism. So far, many potent NAMPT inhibitors have been developed and shown to bind to two unique tunnel-shaped cavities existing adjacent to each active site of a NAMPT homodimer. However, cytotoxicities and resistances to NAMPT inhibitors have become apparent. Therefore, there remains an urgent need to develop effective and safe NAMPT inhibitors. Thus, we designed and synthesized two close structural analogues of NAMPT inhibitors, azaindole-piperidine (3a)- and azaindole-piperazine (3b)-motif compounds, which were modified from the well-known NAMPT inhibitor FK866 (1). Notably, 3a displayed considerably stronger enzyme inhibitory activity and cellular potency than did 3b and 1. The main reason for this phenomenon was revealed to be due to apparent electronic repulsion between the replaced nitrogen atom (N1) of piperazine in 3b and the Nδ atom of His191 in NAMPT by our in silico binding mode analyses. Indeed, 3b had a lower binding affinity score than did 3a and 1, although these inhibitors took similar stable chair conformations in the tunnel region. Taken together, these observations indicate that the electrostatic enthalpy potential rather than entropy effects inside the tunnel cavity has a significant impact on the different binding affinity of 3a from that of 3b in the disparate enzymatic and cellular potencies. Thus, it is better to avoid or minimize interactions with His191 in designing further effective NAMPT inhibitors.
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Affiliation(s)
- Sei-ichi Tanuma
- Department of Genomic Medicinal Science, Research Institute for Science and Technology, Organization for Research Advancement, Tokyo University of Science, Noda, Chiba 278-8510, Japan;
- Department of Biochemistry, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba 278-8510, Japan; (K.K.); (Y.S.); (Y.O.); (A.S.)
- Correspondence:
| | - Kiyotaka Katsuragi
- Department of Biochemistry, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba 278-8510, Japan; (K.K.); (Y.S.); (Y.O.); (A.S.)
| | - Takahiro Oyama
- Hinoki Shinyaku Co., Ltd., Chiyoda-ku, Tokyo 102-0084, Japan; (T.O.); (H.Y.); (H.A.)
| | - Atsushi Yoshimori
- Institute for Theoretical Medicine Inc., Fujisawa, Kanagawa 251-0012, Japan;
| | - Yuri Shibasaki
- Department of Biochemistry, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba 278-8510, Japan; (K.K.); (Y.S.); (Y.O.); (A.S.)
| | - Yasunobu Asawa
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8503, Japan; (Y.A.); (H.N.)
| | - Hiroaki Yamazaki
- Hinoki Shinyaku Co., Ltd., Chiyoda-ku, Tokyo 102-0084, Japan; (T.O.); (H.Y.); (H.A.)
| | - Kosho Makino
- Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba 278-8510, Japan; (K.M.); (H.T.)
| | - Miwa Okazawa
- Department of Genomic Medicinal Science, Research Institute for Science and Technology, Organization for Research Advancement, Tokyo University of Science, Noda, Chiba 278-8510, Japan;
| | - Yoko Ogino
- Department of Biochemistry, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba 278-8510, Japan; (K.K.); (Y.S.); (Y.O.); (A.S.)
- Department of Gene Regulation, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba 278-8510, Japan;
| | - Yoshimi Sakamoto
- Division of Cancer Chemotherapy, Miyagi Cancer Center Research Institute, Natori, Miyagi 981-1293, Japan; (Y.S.); (M.N.); (N.T.)
| | - Miyuki Nomura
- Division of Cancer Chemotherapy, Miyagi Cancer Center Research Institute, Natori, Miyagi 981-1293, Japan; (Y.S.); (M.N.); (N.T.)
| | - Akira Sato
- Department of Biochemistry, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba 278-8510, Japan; (K.K.); (Y.S.); (Y.O.); (A.S.)
| | - Hideaki Abe
- Hinoki Shinyaku Co., Ltd., Chiyoda-ku, Tokyo 102-0084, Japan; (T.O.); (H.Y.); (H.A.)
| | - Hiroyuki Nakamura
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8503, Japan; (Y.A.); (H.N.)
| | - Hideyo Takahashi
- Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba 278-8510, Japan; (K.M.); (H.T.)
| | - Nobuhiro Tanuma
- Division of Cancer Chemotherapy, Miyagi Cancer Center Research Institute, Natori, Miyagi 981-1293, Japan; (Y.S.); (M.N.); (N.T.)
| | - Fumiaki Uchiumi
- Department of Gene Regulation, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba 278-8510, Japan;
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10
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Heske CM. Beyond Energy Metabolism: Exploiting the Additional Roles of NAMPT for Cancer Therapy. Front Oncol 2020; 9:1514. [PMID: 32010616 PMCID: PMC6978772 DOI: 10.3389/fonc.2019.01514] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 12/16/2019] [Indexed: 12/13/2022] Open
Abstract
Tumor cells have increased requirements for NAD+. Thus, many cancers exhibit an increased reliance on NAD+ production pathways. This dependence may be exploited therapeutically through pharmacological targeting of NAMPT, the rate-limiting enzyme in the NAD+ salvage pathway. Despite promising preclinical data using NAMPT inhibitors in cancer models, early NAMPT inhibitors showed limited efficacy in several early phase clinical trials, necessitating the identification of strategies, such as drug combinations, to enhance their efficacy. While the effect of NAMPT inhibitors on impairment of energy metabolism in cancer cells has been well-described, more recent insights have uncovered a number of additional targetable cellular processes that are impacted by inhibition of NAMPT. These include sirtuin function, DNA repair machinery, redox homeostasis, molecular signaling, cellular stemness, and immune processes. This review highlights the recent findings describing the effects of NAMPT inhibitors on the non-metabolic functions of malignant cells, with a focus on how this information can be leveraged clinically. Combining NAMPT inhibitors with other therapies that target NAD+-dependent processes or selecting tumors with specific vulnerabilities that can be co-targeted with NAMPT inhibitors may represent opportunities to exploit the multiple functions of this enzyme for greater therapeutic benefit.
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Affiliation(s)
- Christine M Heske
- Pediatric Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
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