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Yang L, Zhu A, Aman JM, Denberg D, Kilwein MD, Marmion RA, Johnson ANT, Veraksa A, Singh M, Wühr M, Shvartsman SY. ERK synchronizes embryonic cleavages in Drosophila. Dev Cell 2024:S1534-5807(24)00487-8. [PMID: 39208802 DOI: 10.1016/j.devcel.2024.08.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 06/13/2024] [Accepted: 08/05/2024] [Indexed: 09/04/2024]
Abstract
Extracellular-signal-regulated kinase (ERK) signaling controls development and homeostasis and is genetically deregulated in human diseases, including neurocognitive disorders and cancers. Although the list of ERK functions is vast and steadily growing, the full spectrum of processes controlled by any specific ERK activation event remains unknown. Here, we show how ERK functions can be systematically identified using targeted perturbations and global readouts of ERK activation. Our experimental model is the Drosophila embryo, where ERK signaling at the embryonic poles has thus far only been associated with the transcriptional patterning of the future larva. Through a combination of live imaging and phosphoproteomics, we demonstrated that ERK activation at the poles is also critical for maintaining the speed and synchrony of embryonic cleavages. The presented approach to interrogating phosphorylation networks identifies a hidden function of a well-studied signaling event and sets the stage for similar studies in other organisms.
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Affiliation(s)
- Liu Yang
- Lewis Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544, USA
| | - Audrey Zhu
- Lewis Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544, USA; Department of Chemical & Biological Engineering, Princeton University, Princeton, NJ 08544, USA
| | - Javed M Aman
- Lewis Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544, USA; Department of Computer Science, Princeton University, Princeton, NJ 08544, USA
| | - David Denberg
- Lewis Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544, USA; Program in Quantitative and Computational Biology, Princeton University, Princeton, NJ 08544, USA
| | - Marcus D Kilwein
- Department of Molecular Biology, Princeton University, Princeton, NJ 08544, USA
| | - Robert A Marmion
- Lewis Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544, USA
| | - Alex N T Johnson
- Lewis Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544, USA; Department of Chemical & Biological Engineering, Princeton University, Princeton, NJ 08544, USA; Department of Molecular Biology, Princeton University, Princeton, NJ 08544, USA
| | - Alexey Veraksa
- Department of Biology, University of Massachusetts Boston, Boston, MA 02125, USA
| | - Mona Singh
- Lewis Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544, USA; Department of Computer Science, Princeton University, Princeton, NJ 08544, USA
| | - Martin Wühr
- Lewis Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544, USA; Department of Chemical & Biological Engineering, Princeton University, Princeton, NJ 08544, USA; Department of Molecular Biology, Princeton University, Princeton, NJ 08544, USA.
| | - Stanislav Y Shvartsman
- Lewis Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544, USA; Program in Quantitative and Computational Biology, Princeton University, Princeton, NJ 08544, USA; Department of Molecular Biology, Princeton University, Princeton, NJ 08544, USA; Flatiron Institute, New York, NY 10010, USA.
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Xie SY, Yang YJ, Jin Z, Liu XC, Zhang SP, Su N, Liu JQ, Li CR, Zhang D, Gao LL, Yang ZX. Mouse KL2 is a unique MTSE involved in chromosome-based spindle organization and regulated by multiple kinases during female meiosis. J Biomed Res 2024; 38:1-15. [PMID: 38808565 DOI: 10.7555/jbr.37.20230290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2024] Open
Abstract
Microtubule-severing enzymes (MTSEs) play important roles in mitosis and meiosis of the primitive organisms. However, no studies have assessed their roles in mammalian meiosis of females, whose abnormality accounts for over 80% of the cases of gamete-originated human reproductive disease. In the current study, we reported that katanin-like 2 (KL2) was the only MTSE concentrating at chromosomes. Furthermore, the knockdown of KL2 significantly reduced chromosome-based increase in the microtubule (MT) polymer, increased aberrant kinetochore-MT (K-MT) attachment, delayed meiosis, and severely affected normal fertility. Importantly, we demonstrated that the inhibition of aurora B, a key kinase for correcting aberrant K-MT attachment, eliminated KL2 from chromosomes completely. KL2 also interacted with phosphorylated eukaryotic elongation factor-2 kinase; they competed for chromosome binding. We also observed that the phosphorylated KL2 was localized at spindle poles, and that KL2 phosphorylation was regulated by extracellular signal-regulated kinase 1/2. In summary, our study reveals a novel function of MTSEs in mammalian female meiosis and demonstrates that multiple kinases coordinate to regulate the levels of KL2 at chromosomes.
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Affiliation(s)
- Shi-Ya Xie
- State Key Lab of Reproductive Medicine and Offspring Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
- Central Laboratory, the First Affiliated Hospital of Anhui Medical University, No 218 Jixi Road, Hefei, Anhui 230022, China
- Department of Gynaecology and Obstetrics, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, China
| | - Yan-Jie Yang
- State Key Lab of Reproductive Medicine and Offspring Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
- Central Laboratory, the First Affiliated Hospital of Anhui Medical University, No 218 Jixi Road, Hefei, Anhui 230022, China
- Department of Gynaecology and Obstetrics, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, China
| | - Zhen Jin
- Center for Reproductive Medicine, Department of Gynecology, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang 310014, China
- Center for Reproductive Medicine, Department of Reproductive Endocrinology, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang 310014, China
| | - Xiao-Cong Liu
- Laboratory Department of Shihezi People's Hospital, Xinjiang 832099, China
| | - Shu-Ping Zhang
- State Key Lab of Reproductive Medicine and Offspring Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Ning Su
- State Key Lab of Reproductive Medicine and Offspring Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Jia-Qi Liu
- State Key Lab of Reproductive Medicine and Offspring Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Cong-Rong Li
- State Key Lab of Reproductive Medicine and Offspring Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Dong Zhang
- State Key Lab of Reproductive Medicine and Offspring Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
- Department of Gynaecology and Obstetrics, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, China
| | - Lei-Lei Gao
- Center for Reproductive Medicine, Department of Gynecology, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang 310014, China
| | - Zhi-Xia Yang
- Central Laboratory, the First Affiliated Hospital of Anhui Medical University, No 218 Jixi Road, Hefei, Anhui 230022, China
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3
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Wang Y, Yao M, Li C, Yang K, Qin X, Xu L, Shi S, Yu C, Meng X, Xie C. Targeting ST8SIA6-AS1 counteracts KRAS G12C inhibitor resistance through abolishing the reciprocal activation of PLK1/c-Myc signaling. Exp Hematol Oncol 2023; 12:105. [PMID: 38104151 PMCID: PMC10724920 DOI: 10.1186/s40164-023-00466-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 12/03/2023] [Indexed: 12/19/2023] Open
Abstract
BACKGROUND KRASG12C inhibitors (KRASG12Ci) AMG510 and MRTX849 have shown promising efficacy in clinical trials and been approved for the treatment of KRASG12C-mutant cancers. However, the emergence of therapy-related drug resistance limits their long-term potential. This study aimed to identify the critical mediators and develop overcoming strategies. METHODS By using RNA sequencing, RT-qPCR and immunoblotting, we identified and validated the upregulation of c-Myc activity and the amplification of the long noncoding RNA ST8SIA6-AS1 in KRASG12Ci-resistant cells. The regulatory axis ST8SIA6-AS1/Polo-like kinase 1 (PLK1)/c-Myc was investigated by bioinformatics, RNA fluorescence in situ hybridization, RNA immunoprecipitation, RNA pull-down and chromatin immunoprecipitation. Gain/loss-of-function assays, cell viability assay, xenograft models, and IHC staining were conducted to evaluate the anti-cancer effects of co-inhibition of ST8SIA6-AS1/PLK1 pathway and KRAS both in vitro and in vivo. RESULTS KRASG12Ci sustainably decreased c-Myc levels in responsive cell lines but not in cell lines with intrinsic or acquired resistance to KRASG12Ci. PLK1 activation contributed to this ERK-independent c-Myc stability, which in turn directly induced PLK1 transcription, forming a positive feedback loop and conferring resistance to KRASG12Ci. ST8SIA6-AS1 was found significantly upregulated in resistant cells and facilitated the proliferation of KRASG12C-mutant cancers. ST8SIA6-AS1 bound to Aurora kinase A (Aurora A)/PLK1 and promoted Aurora A-mediated PLK1 phosphorylation. Concurrent targeting of KRAS and ST8SIA6-AS1/PLK1 signaling suppressed both ERK-dependent and -independent c-Myc expression, synergistically led to cell death and tumor regression and overcame KRASG12Ci resistance. CONCLUSIONS Our study deciphers that the axis of ST8SIA6-AS1/PLK1/c-Myc confers both intrinsic and acquired resistance to KRASG12Ci and represents a promising therapeutic target for combination strategies with KRASG12Ci in the treatment of KRASG12C-mutant cancers.
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Affiliation(s)
- Yafang Wang
- Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai, 201210, People's Republic of China
| | - Mingyue Yao
- Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai, 201210, People's Republic of China
- Division of Life Sciences and Medicine, The First Affiliated Hospital of USTC (Anhui Provincial Hospital), University of Science and Technology of China, Hefei, Anhui, China
- Drug Discovery and Development Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, People's Republic of China
| | - Cheng Li
- Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai, 201210, People's Republic of China
- School of Life Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Kexin Yang
- School of Life Science and Technology, ShanghaiTech University, Shanghai, 201210, China
- Lingang Laboratory, 319 Yueyang Road, Shanghai, 200031, China
| | - Xiaolong Qin
- Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai, 201210, People's Republic of China
- School of Life Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Lansong Xu
- Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai, 201210, People's Republic of China
- Division of Life Sciences and Medicine, The First Affiliated Hospital of USTC (Anhui Provincial Hospital), University of Science and Technology of China, Hefei, Anhui, China
- Drug Discovery and Development Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, People's Republic of China
| | - Shangxuan Shi
- Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai, 201210, People's Republic of China
- School of Life Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Chengcheng Yu
- Drug Discovery and Development Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, People's Republic of China
- Lingang Laboratory, 319 Yueyang Road, Shanghai, 200031, China
| | - Xiangjun Meng
- Gastroenterology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200001, China
- China Center for Digestive Diseases Research and Clinical Translation of Shanghai Jiao Tong University, Shanghai, 200001, China
- China Shanghai Key Laboratory of Gut Microecology and Associated Major Diseases Research, Shanghai, 200001, China
| | - Chengying Xie
- Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai, 201210, People's Republic of China.
- School of Life Science and Technology, ShanghaiTech University, Shanghai, 201210, China.
- Lingang Laboratory, 319 Yueyang Road, Shanghai, 200031, China.
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4
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Shin D, Byun WS, Kang S, Kang I, Bae ES, An JS, Im JH, Park J, Kim E, Ko K, Hwang S, Lee H, Kwon Y, Ko YJ, Hong S, Nam SJ, Kim SB, Fenical W, Yoon YJ, Cho JC, Lee SK, Oh DC. Targeted and Logical Discovery of Piperazic Acid-Bearing Natural Products Based on Genomic and Spectroscopic Signatures. J Am Chem Soc 2023; 145:19676-19690. [PMID: 37642383 DOI: 10.1021/jacs.3c04699] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
A targeted and logical discovery method was devised for natural products containing piperazic acid (Piz), which is biosynthesized from ornithine by l-ornithine N-hydroxylase (KtzI) and N-N bond formation enzyme (KtzT). Genomic signature-based screening of a bacterial DNA library (2020 strains) using polymerase chain reaction (PCR) primers targeting ktzT identified 62 strains (3.1%). The PCR amplicons of KtzT-encoding genes were phylogenetically analyzed to classify the 23 clades into two monophyletic groups, I and II. Cultivating hit strains in media supplemented with 15NH4Cl and applying 1H-15N heteronuclear multiple bond correlation (HMBC) along with 1H-15N heteronuclear single quantum coherence (HSQC) and 1H-15N HSQC-total correlation spectroscopy (HSQC-TOCSY) NMR experiments detected the spectroscopic signatures of Piz and modified Piz. Chemical investigation of the hit strains prioritized by genomic and spectroscopic signatures led to the identification of a new azinothricin congener, polyoxyperuin B seco acid (1), previously reported chloptosin (2) in group I, depsidomycin D (3) incorporating two dehydropiperazic acids (Dpz), and lenziamides A and B (4 and 5), structurally novel 31-membered cyclic decapeptides in group II. By consolidating the phylogenetic and chemical analyses, clade-structure relationships were elucidated for 19 of the 23 clades. Lenziamide A (4) inhibited STAT3 activation and induced G2/M cell cycle arrest, apoptotic cell death, and tumor growth suppression in human colorectal cancer cells. Moreover, lenziamide A (4) resensitized 5-fluorouracil (5-FU) activity in both in vitro cell cultures and the in vivo 5-FU-resistant tumor xenograft mouse model. This work demonstrates that the genomic and spectroscopic signature-based searches provide an efficient and general strategy for new bioactive natural products containing specific structural motifs.
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Affiliation(s)
- Daniel Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Woong Sub Byun
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Sangwook Kang
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Ilnam Kang
- Department of Biological Sciences, Inha University, Incheon 22212, Republic of Korea
| | - Eun Seo Bae
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Joon Soo An
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Ji Hyeon Im
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Jiyoon Park
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Eunji Kim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Keebeom Ko
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Sunghoon Hwang
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Honghui Lee
- Natural Products Research Institute and Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Yun Kwon
- Research Institute of Pharmaceutical Science, College of Pharmacy, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Yoon-Joo Ko
- Laboratory of Nuclear Magnetic Resonance, National Center for Inter-University Research Facilities (NCIRF), Seoul National University, Seoul 08826, Republic of Korea
| | - Suckchang Hong
- Natural Products Research Institute and Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Sang-Jip Nam
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Seung Bum Kim
- Department of Microbiology and Molecular Biology, College of Bioscience and Biotechnology, Chungnam National University, Daejeon 34134, Republic of Korea
| | - William Fenical
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography and Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, California 92093, United States
| | - Yeo Joon Yoon
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
- MolGenBio Co., Ltd., Seoul 08826, Republic of Korea
| | - Jang-Cheon Cho
- Department of Biological Sciences, Inha University, Incheon 22212, Republic of Korea
| | - Sang Kook Lee
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
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Gurbi B, Brauswetter D, Pénzes K, Varga A, Krenács T, Dános K, Birtalan E, Tamás L, Csala M. MEK Is a Potential Indirect Target in Subtypes of Head and Neck Cancers. Int J Mol Sci 2023; 24:ijms24032782. [PMID: 36769112 PMCID: PMC9917750 DOI: 10.3390/ijms24032782] [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: 11/23/2022] [Revised: 01/24/2023] [Accepted: 01/27/2023] [Indexed: 02/05/2023] Open
Abstract
The poor prognosis of head-and-neck squamous cell carcinoma (HNSCC) is partly due to the lack of reliable prognostic and predictive markers. The Ras/Raf/MEK/ERK signaling pathway is often activated by overexpressed epidermal growth factor receptor (EGFR) and stimulates the progression of HNSCCs. Our research was performed on three human papillomavirus (HPV)-negative HNSCC-cell lines: Detroit 562, FaDu and SCC25. Changes in cell viability upon EGFR and/or MEK inhibitors were measured by the MTT method. The protein-expression and phosphorylation profiles of the EGFR-initiated signaling pathways were assessed using Western-blot analysis. The EGFR expression and pY1068-EGFR levels were also studied in the patient-derived HNSCC samples. We found significant differences between the sensitivity of the tumor-cell lines used. The SCC25 line was found to be the most sensitive to the MEK inhibitors, possibly due to the lack of feedback Akt activation through EGFR. By contrast, this feedback activation had an important role in the FaDu cells. The observed insensitivity of the Detroit 562 cells to the MEK inhibitors might have been caused by their PIK3CA mutation. Among HNSCC cell lines, EGFR-initiated signaling pathways are particularly versatile. An ERK/EGFR feedback loop can lead to Akt-pathway activation upon MEK inhibition, and it is related not only to increased amounts of EGFR but also to the elevation of pY1068-EGFR levels. The presence of this mechanism may justify the combined application of EGFR and MEK inhibitors.
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Affiliation(s)
- Bianka Gurbi
- Department of Molecular Biology, Semmelweis University, H-1094 Budapest, Hungary
- MTA-SE Pathobiochemistry Research Group, Semmelweis University, H-1094 Budapest, Hungary
| | - Diána Brauswetter
- MTA-SE Pathobiochemistry Research Group, Semmelweis University, H-1094 Budapest, Hungary
- Correspondence: (D.B.); (M.C.)
| | - Kinga Pénzes
- MTA-SE Pathobiochemistry Research Group, Semmelweis University, H-1094 Budapest, Hungary
| | - Attila Varga
- Department of Molecular Biology, Semmelweis University, H-1094 Budapest, Hungary
- MTA-SE Pathobiochemistry Research Group, Semmelweis University, H-1094 Budapest, Hungary
| | - Tibor Krenács
- Department of Pathology and Experimental Cancer Research, Semmelweis University, H-1085 Budapest, Hungary
| | - Kornél Dános
- Department of Oto-Rhino-Laryngology, Head and Neck Surgery, Semmelweis University, H-1083 Budapest, Hungary
| | - Ede Birtalan
- Department of Oto-Rhino-Laryngology, Head and Neck Surgery, Semmelweis University, H-1083 Budapest, Hungary
| | - László Tamás
- Department of Oto-Rhino-Laryngology, Head and Neck Surgery, Semmelweis University, H-1083 Budapest, Hungary
- Department of Voice, Speech and Swallowing Therapy, Faculty of Health Sciences, Semmelweis University, H-1088 Budapest, Hungary
| | - Miklós Csala
- Department of Molecular Biology, Semmelweis University, H-1094 Budapest, Hungary
- MTA-SE Pathobiochemistry Research Group, Semmelweis University, H-1094 Budapest, Hungary
- Correspondence: (D.B.); (M.C.)
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6
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Heim A, Niedermeier ML, Stengel F, Mayer TU. The translation regulator Zar1l controls timing of meiosis in Xenopus oocytes. Development 2022; 149:278465. [DOI: 10.1242/dev.200900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 09/23/2022] [Indexed: 11/07/2022]
Abstract
ABSTRACT
Oocyte maturation and early embryo development occur in vertebrates in the near absence of transcription. Thus, sexual reproduction of vertebrates critically depends on the timely translation of mRNAs already stockpiled in the oocyte. Yet how translational activation of specific mRNAs is temporally coordinated is still incompletely understood. Here, we elucidate the function of Zar1l, a yet uncharacterized member of the Zar RNA-binding protein family, in Xenopus oocytes. Employing TRIM-Away, we demonstrate that loss of Zar1l accelerates hormone-induced meiotic resumption of Xenopus oocytes due to premature accumulation of the M-phase-promoting kinase cMos. We show that Zar1l is a constituent of a large ribonucleoparticle containing the translation repressor 4E-T and the central polyadenylation regulator CPEB1, and that it binds directly to the cMos mRNA. Partial, hormone-induced degradation of Zar1l liberates 4E-T from CPEB1, which weakens translational repression of mRNAs encoding cMos and likely additional M-phase-promoting factors. Thus, our study provides fundamental insights into the mechanisms that ensure temporally regulated translation of key cell cycle regulators during oocyte maturation, which is essential for sexual reproductivity.
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Affiliation(s)
- Andreas Heim
- University of Konstanz 1 Department of Biology , , 78457 Konstanz , Germany
| | - Marie L. Niedermeier
- University of Konstanz 1 Department of Biology , , 78457 Konstanz , Germany
- Konstanz Research School Chemical Biology, University of Konstanz 2 , 78457 Konstanz , Germany
| | - Florian Stengel
- University of Konstanz 1 Department of Biology , , 78457 Konstanz , Germany
- Konstanz Research School Chemical Biology, University of Konstanz 2 , 78457 Konstanz , Germany
| | - Thomas U. Mayer
- University of Konstanz 1 Department of Biology , , 78457 Konstanz , Germany
- Konstanz Research School Chemical Biology, University of Konstanz 2 , 78457 Konstanz , Germany
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7
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Gong L, Chen C, Liu X, Wu X, Zhu L, Luo J, Kong L. Hainanolide inhibits the progression of colon cancer via inducing the cell cycle arrest, cell apoptosis and activation of the MAPK signaling pathway. Toxicol Appl Pharmacol 2022; 454:116249. [PMID: 36126765 DOI: 10.1016/j.taap.2022.116249] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 09/03/2022] [Accepted: 09/13/2022] [Indexed: 12/24/2022]
Abstract
Hainanolide (HN) is a norditerpenoid metabolite extract from Cephalotaxus fortunei Hook. f. C. fortunei Hook. f. is renowned for the active alkaloids, such as harringtonine (HT) and homoharringtonin (HTT), which have been clinically used to treat chronic myeloid leukemia. Nowadays, diterpenoids, another important metabolite, attracted the attention of chemists. Among them, Hainanolide (HN), a cephalotane-type diterpenoid, has been proven to possess potent antitumor activities. However, the underlying therapeutic mechanisms of HN in anti-tumor have not been investigated yet. Our present study demonstrated that HN inhibited HCT-116 and HCT-15 cell proliferation in a dose- and time-dependent manner. Further studies demonstrated that HN can induce G2/M phase arrest and alter the Cdc25C/Cdc2/CyclinB1 proteins. Western blot indicated that HN promoted apoptosis by up-regulating Bax and down-regulated Bcl-2. And the caspase-3 and caspase-9 activities of HCT-116 and HCT-15 cells were increased. Transcriptome analysis is used to reveal the possible mechanism. Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses suggested the genes were mainly enriched in the MAPK signaling pathway. Certainly, HN activates MAPK signaling pathway. In vivo, HN prevented the AOM/DSS-induced tumorigenesis of colon cancer in C57BL/6 mice. Our study indicated that HN inhibits the progression of colon cancer cells by blocking the cell cycle, inducing apoptosis, and activating the MAPK pathway. This study provides a theoretical and experimental scientific basis for future investigations of the antitumor effects of HN against colon cancer.
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Affiliation(s)
- Lijie Gong
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, China
| | - Chen Chen
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, China
| | - Xiaoqin Liu
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, China
| | - Xiutao Wu
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, China
| | - Ling Zhu
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, China
| | - Jianguang Luo
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, China.
| | - Lingyi Kong
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, China.
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8
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Tan T, Wu C, Liu B, Pan BF, Hawke DH, Su Z, Liu S, Zhang W, Wang R, Lin SH, Kuang J. Revisiting the multisite phosphorylation that produces the M-phase supershift of key mitotic regulators. Mol Biol Cell 2022; 33:ar115. [PMID: 35976701 PMCID: PMC9635296 DOI: 10.1091/mbc.e22-04-0118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
The term M-phase supershift denotes the phosphorylation-dependent substantial increase in the apparent molecular weight of numerous proteins of varied biological functions during M-phase induction. Although the M-phase supershift of multiple key mitotic regulators has been attributed to the multisite phosphorylation catalyzed by the Cdk1/cyclin B/Cks complex, this view is challenged by multiple lines of paradoxical observations. To solve this problem, we reconstituted the M-phase supershift of Xenopus Cdc25C, Myt1, Wee1A, APC3 and Greatwall in Xenopus egg extracts and characterized the supershift-producing phosphorylations. Our results demonstrate that their M-phase supershifts are each due to simultaneous phosphorylation of a considerable portion of S/T/Y residues in a long intrinsically disordered region that is enriched in both S/T residues and S/TP motifs. Although the major mitotic kinases in Xenopus egg extracts, Cdk1, MAPK, Plx1 and RSK2, are able to phosphorylate the five mitotic regulators, they are neither sufficient nor required to produce the M-phase supershift. Accordingly, inhibition of the four major mitotic kinase activities in Xenopus oocytes did not inhibit the M-phase supershift in okadaic acid-induced oocyte maturation. These findings indicate that the M-phase supershift is produced by a previously unrecognized category of mitotic phosphorylation that likely plays important roles in M-phase induction.
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Affiliation(s)
- Tan Tan
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.,Department of Biochemistry and Molecular Biology, Hengyang Medical School, The University of South China, Hengyang, Hunan 421001, China
| | - Chuanfen Wu
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Boye Liu
- Key Laboratory for Biodiversity and Ecological Engineering of Ministry of Education
| | - Bih-Fang Pan
- Department of Systems Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - David H Hawke
- Department of Systems Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Zehao Su
- Key Laboratory of Cell Proliferation and Regulation Biology of Ministry of Education, College of Life Sciences, Beijing Normal University, Beijing 100875, China
| | - Shuaishuai Liu
- Key Laboratory of Cell Proliferation and Regulation Biology of Ministry of Education, College of Life Sciences, Beijing Normal University, Beijing 100875, China
| | - Wei Zhang
- Key Laboratory of Cell Proliferation and Regulation Biology of Ministry of Education, College of Life Sciences, Beijing Normal University, Beijing 100875, China
| | - Ruoning Wang
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Sue-Hwa Lin
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Jian Kuang
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
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9
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Zhang X, Yao Z, Xue Z, Wang S, Liu X, Hu Y, Zhang Y, Wang J, Li X, Chen A. Resibufogenin Targets the ATP1A1 Signaling Cascade to Induce G2/M Phase Arrest and Inhibit Invasion in Glioma. Front Pharmacol 2022; 13:855626. [PMID: 35656311 PMCID: PMC9152115 DOI: 10.3389/fphar.2022.855626] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Accepted: 04/08/2022] [Indexed: 11/13/2022] Open
Abstract
Resibufogenin (RB) is a major active ingredient in the traditional Chinese medicine Chansu and has garnered considerable attention for its efficacy in the treatment of cancer. However, the anticancer effects and underlying mechanisms of RB on glioblastoma (GBM) remain unknown. Here, we found that RB induced G2/M phase arrest and inhibited invasion in a primary GBM cell line, P3#GBM, and two GBM cell lines, U251 and A172. Subsequently, we demonstrated that RB-induced G2/M phase arrest occurred through downregulation of CDC25C and upregulation of p21, which was caused by activation of the MAPK/ERK pathway, and that RB inhibited GBM invasion by elevating intercellular Ca2+ to suppress the Src/FAK/Paxillin focal adhesion pathway. Intriguingly, we confirmed that upon RB binding to ATP1A1, Na+-K+-ATPase was activated as a receptor and then triggered the intracellular MAPK/ERK pathway and Ca2+-mediated Src/FAK/Paxillin focal adhesion pathway, which led to G2/M phase arrest and inhibited the invasion of GBM cells. Taken together, our findings reveal the antitumor mechanism of RB by targeting the ATP1A1 signaling cascade and two key signaling pathways and highlight the potential of RB as a new class of promising anticancer agents.
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Affiliation(s)
- Xun Zhang
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan, China.,Shandong Key Laboratory of Brain Function Remodeling and Jinan Microecological Biomedicine Shandong Laboratory, Jinan, China
| | - Zhong Yao
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan, China.,Shandong Key Laboratory of Brain Function Remodeling and Jinan Microecological Biomedicine Shandong Laboratory, Jinan, China
| | - Zhiyi Xue
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan, China.,Shandong Key Laboratory of Brain Function Remodeling and Jinan Microecological Biomedicine Shandong Laboratory, Jinan, China
| | - Shuai Wang
- Hillman Cancer Center, University of Pittsburgh Medical Center, Pittsburgh, PA, United States
| | - Xuemeng Liu
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan, China.,Shandong Key Laboratory of Brain Function Remodeling and Jinan Microecological Biomedicine Shandong Laboratory, Jinan, China
| | - Yaotian Hu
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan, China.,Shandong Key Laboratory of Brain Function Remodeling and Jinan Microecological Biomedicine Shandong Laboratory, Jinan, China
| | - Yan Zhang
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan, China.,Shandong Key Laboratory of Brain Function Remodeling and Jinan Microecological Biomedicine Shandong Laboratory, Jinan, China
| | - Jian Wang
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan, China.,Shandong Key Laboratory of Brain Function Remodeling and Jinan Microecological Biomedicine Shandong Laboratory, Jinan, China.,Department of Biomedicine, University of Bergen, Bergen, Norway
| | - Xingang Li
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan, China.,Shandong Key Laboratory of Brain Function Remodeling and Jinan Microecological Biomedicine Shandong Laboratory, Jinan, China
| | - Anjing Chen
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan, China.,Shandong Key Laboratory of Brain Function Remodeling and Jinan Microecological Biomedicine Shandong Laboratory, Jinan, China
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10
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Induction of G2/M Cell Cycle Arrest via p38/p21 Waf1/Cip1-Dependent Signaling Pathway Activation by Bavachinin in Non-Small-Cell Lung Cancer Cells. MOLECULES (BASEL, SWITZERLAND) 2021; 26:molecules26175161. [PMID: 34500594 PMCID: PMC8434044 DOI: 10.3390/molecules26175161] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/13/2021] [Accepted: 08/23/2021] [Indexed: 12/22/2022]
Abstract
Lung cancer is the most commonly diagnosed malignant cancer in the world. Non-small-cell lung cancer (NSCLC) is the major category of lung cancer. Although effective therapies have been administered, for improving the NSCLC patient’s survival, the incident rate is still high. Therefore, searching for a good strategy for preventing NSCLC is urgent. Traditional Chinese medicine (TCM) are brilliant materials for cancer chemoprevention, because of their high biological safety and low cost. Bavachinin, which is an active flavanone of Proralea corylifolia L., possesses anti-inflammation, anti-angiogenesis, and anti-cancer activities. The present study’s aim was to evaluate the anti-cancer activity of bavachinin on NSCLC, and its regulating molecular mechanisms. The results exhibited that a dose-dependent decrease in the cell viability and colony formation capacity of three NSCLC cell lines, by bavachinin, were through G2/M cell cycle arrest induction. Meanwhile, the expression of the G2/M cell cycle regulators, such as cyclin B, p-cdc2Y15, p-cdc2T161, and p-wee1, was suppressed. With the dramatic up-regulation of the cyclin-dependent kinase inhibitor, p21Waf1/Cip1, the expression and association of p21Waf1/Cip1 with the cyclin B/cdc2 complex was observed. Silencing the p21Waf1/Cip1 expression significantly rescued bavachinin-induced G2/M cell accumulation. Furthermore, the expression of p21Waf1/Cip1 mRNA was up-regulated in bavachinin-treated NSCLC cells. In addition, MAPK and AKT signaling were activated in bavachinin-added NSCLC cells. Interestingly, bavachinin-induced p21Waf1/Cip1 expression was repressed after restraint p38 MAPK activation. The inhibition of p38 MAPK activation reversed bavachinin-induced p21Waf1/Cip1 mRNA expression and G2/M cell cycle arrest. Collectively, bavachinin-induced G2/M cell cycle arrest was through the p38 MAPK-mediated p21Waf1/Cip1-dependent signaling pathway in the NSCLC cells.
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11
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De S, Campbell C, Venkitaraman AR, Esposito A. Pulsatile MAPK Signaling Modulates p53 Activity to Control Cell Fate Decisions at the G2 Checkpoint for DNA Damage. Cell Rep 2021; 30:2083-2093.e5. [PMID: 32075732 PMCID: PMC7029415 DOI: 10.1016/j.celrep.2020.01.074] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 12/04/2019] [Accepted: 01/22/2020] [Indexed: 01/01/2023] Open
Abstract
Cell-autonomous changes in p53 expression govern the duration and outcome of cell-cycle arrest at the G2 checkpoint for DNA damage. Here, we report that mitogen-activated protein kinase (MAPK) signaling integrates extracellular cues with p53 dynamics to determine cell fate at the G2 checkpoint. Optogenetic tools and quantitative cell biochemistry reveal transient oscillations in MAPK activity dependent on ataxia-telangiectasia-mutated kinase after DNA damage. MAPK inhibition alters p53 dynamics and p53-dependent gene expression after checkpoint enforcement, prolonging G2 arrest. In contrast, sustained MAPK signaling induces the phosphorylation of CDC25C, and consequently, the accumulation of pro-mitotic kinases, thereby relaxing checkpoint stringency and permitting cells to evade prolonged G2 arrest and senescence induction. We propose a model in which this MAPK-mediated mechanism integrates extracellular cues with cell-autonomous p53-mediated signals, to safeguard genomic integrity during tissue proliferation. Early steps in oncogene-driven carcinogenesis may imbalance this tumor-suppressive mechanism to trigger genome instability. DNA damage elicits opposing pro-survival and pro-arrest responses via MAPK and p53 MAPK pulsations modulate p53-dependent transcription to determine cell fate MAPK/p53 signal dynamics control the stringency of the G2 DNA damage checkpoint MAPK/p53 integrate extracellular and intracellular cues to protect genome integrity
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Affiliation(s)
- Siddharth De
- Medical Research Council Cancer Unit, University of Cambridge, Hills Road, Cambridge CB2 0XZ, UK
| | - Callum Campbell
- Medical Research Council Cancer Unit, University of Cambridge, Hills Road, Cambridge CB2 0XZ, UK
| | - Ashok R Venkitaraman
- Medical Research Council Cancer Unit, University of Cambridge, Hills Road, Cambridge CB2 0XZ, UK.
| | - Alessandro Esposito
- Medical Research Council Cancer Unit, University of Cambridge, Hills Road, Cambridge CB2 0XZ, UK.
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12
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Zhang X, Liu Y, Zhang Z, Tan J, Zhang J, Ou H, Li J, Song Z. Multi-Omics Analysis of Anlotinib in Pancreatic Cancer and Development of an Anlotinib-Related Prognostic Signature. Front Cell Dev Biol 2021; 9:649265. [PMID: 33748143 PMCID: PMC7969999 DOI: 10.3389/fcell.2021.649265] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 02/08/2021] [Indexed: 12/28/2022] Open
Abstract
Aberrant regulation of angiogenesis involves in the growth and metastasis of tumors, but angiogenesis inhibitors fail to improve overall survival of pancreatic cancer patients in previous phase III clinical trials. A comprehensive knowledge of the mechanism of angiogenesis inhibitors against pancreatic cancer is helpful for clinical purpose and for the selection of patients who might benefit from the inhibitors. In this work, multi-omics analyses (transcriptomics, proteomics, and phosphoproteomics profiling) were carried out to delineate the mechanism of anlotinib, a novel angiogenesis inhibitor, against pancreatic cancer cells. The results showed that anlotinib exerted noteworthy cytotoxicity on pancreatic cancer cells. Multi-omics analyses revealed that anlotinib had a profound inhibitory effect on ribosome, and regulated cell cycle, RNA metabolism and lysosome. Based on the multi-omics results and available data deposited in public databases, an anlotinib-related gene signature was further constructed to identify a subgroup of pancreatic cancer patients who had a dismal prognosis and might be responsive to anlotinib.
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Affiliation(s)
- Xi Zhang
- Department of Oncology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Yang Liu
- Department of Pathology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Zhen Zhang
- Department of Oncology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Juan Tan
- Department of Pathology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Junjun Zhang
- Department of Oncology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Hao Ou
- Department of Oncology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Jie Li
- Department of Information Science and Engineering, Hunan University of Chinese Medicine, Changsha, China
| | - Zewen Song
- Department of Oncology, The Third Xiangya Hospital of Central South University, Changsha, China
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13
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Rangel-Garcia CI, Salvador C, Chavez-Garcia K, Diaz-Bello B, Lopez-Gonzalez Z, Vazquez-Cruz L, Angel Vazquez-Martinez J, Ortiz-Navarrete V, Riveros-Rosas H, Escobar LI. Identification of a unique endoplasmic retention motif in the Xenopus GIRK5 channel and its contribution to oocyte maturation. FEBS Open Bio 2021; 11:1093-1108. [PMID: 33565726 PMCID: PMC8016131 DOI: 10.1002/2211-5463.13113] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 12/17/2020] [Accepted: 02/08/2021] [Indexed: 11/17/2022] Open
Abstract
G protein‐activated inward‐rectifying potassium (K+) channels (Kir3/GIRK) participate in cell excitability. The GIRK5 channel is present in Xenopus laevis oocytes. In an attempt to investigate the physiological role of GIRK5, we identified a noncanonical di‐arginine endoplasmic reticulum (ER) retention motif (KRXY). This retention motif is located at the N‐terminal region of GIRK5, coded by two small exons found only in X. laevis and X. tropicalis. These novel exons are expressed through use of an alternative transcription start site. Mutations in the sequence KRXY produced functional channels and induced progesterone‐independent oocyte meiotic progression. The chimeric proteins enhanced green fluorescent protein (EGFP)‐GIRK5‐WT and the EGFP‐GIRK5K13AR14A double mutant, were localized to the ER and the plasma membrane of the vegetal pole of the oocyte, respectively. Silencing of GIRK5 or blocking of this channel by external barium prevented progesterone‐induced meiotic progression. The endogenous level of GIRK5 protein decreased through oocyte stages in prophase I augmenting by progesterone. In conclusion, we have identified a unique mechanism by which the expression pattern of a K+ channel evolved to control Xenopus oocyte maturation.
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Affiliation(s)
- Claudia I Rangel-Garcia
- Departamento de Fisiologia, Facultad de Medicina, Universidad Nacional Autonoma de Mexico, Ciudad de Mexico, Mexico
| | - Carolina Salvador
- Departamento de Fisiologia, Facultad de Medicina, Universidad Nacional Autonoma de Mexico, Ciudad de Mexico, Mexico
| | - Karla Chavez-Garcia
- Departamento de Fisiologia, Facultad de Medicina, Universidad Nacional Autonoma de Mexico, Ciudad de Mexico, Mexico
| | - Beatriz Diaz-Bello
- Departamento de Fisiologia, Facultad de Medicina, Universidad Nacional Autonoma de Mexico, Ciudad de Mexico, Mexico
| | - Zinaeli Lopez-Gonzalez
- Departamento de Fisiologia, Facultad de Medicina, Universidad Nacional Autonoma de Mexico, Ciudad de Mexico, Mexico
| | - Lourdes Vazquez-Cruz
- Departamento de Fisiologia, Facultad de Medicina, Universidad Nacional Autonoma de Mexico, Ciudad de Mexico, Mexico
| | - Julio Angel Vazquez-Martinez
- Departamento de Biomedicina Molecular, Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico Nacional, Mexico City, Mexico
| | - Vianney Ortiz-Navarrete
- Departamento de Biomedicina Molecular, Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico Nacional, Mexico City, Mexico
| | - Hector Riveros-Rosas
- Departamento de Bioquimica, Facultad de Medicina, Universidad Nacional Autonoma de Mexico, Ciudad de Mexico, Mexico
| | - Laura I Escobar
- Departamento de Fisiologia, Facultad de Medicina, Universidad Nacional Autonoma de Mexico, Ciudad de Mexico, Mexico
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14
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Zhao J, Li X, Fu L, Zhang N, Yang J, Cai J. lncRNA LIFR‑AS1 inhibits gastric carcinoma cell proliferation, migration and invasion by sponging miR‑4698. Mol Med Rep 2020; 23:153. [PMID: 33355363 PMCID: PMC7789130 DOI: 10.3892/mmr.2020.11792] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Accepted: 11/18/2020] [Indexed: 12/16/2022] Open
Abstract
The vital functions of long non-coding (lnc)RNAs have been verified in gastric carcinoma (GC). However, as a novel cancer-related lncRNA, the influence of leukemia inhibitory factor receptor antisense RNA 1 (LIFR-AS1) in GC cell biological behaviors remains unreported. The present study explored the biological effects of lncRNA LIFR-AS1 on GC progression. Reverse transcription-quantitative PCR was performed to examine lncRNA LIFR-AS1 expression in GC tissues and cells. Cell Counting Kit-8, 5-ethynyl-2′-deoxyuridine incorporation, cell wound healing and Transwell invasion assays were used to assess the functions of lncRNA LIFR-AS1 in GC cell proliferation, migration and invasion. Additionally, associations among lncRNA LIFR-AS1, microRNA (miR)-4698 and microtubule-associated tumor suppressor 1 (MTUS1) were investigated via bioinformatics software and a luciferase reporter system. In addition, western blotting was used to examine the expression of MEK and ERK. Decreased lncRNA LIFR-AS1 expression was observed in GC tissues and cells. Upregulated lncRNA LIFR-AS1 inhibited GC cell proliferation, migration and invasion. Upregulated miR-4698 and downregulated MTUS1 were identified in GC tissues and cells. The inhibitory interaction between lncRNA LIFR-AS1 and miR-4698 was confirmed. Additionally, MTUS1 was predicted as a target gene of miR-4698 positively regulated by lncRNA LIFR-AS1. The MEK/ERK pathway was inhibited by lncRNA LIFR-AS1 via regulating MTUS1. These findings revealed the inhibitory functions of lncRNA LIFR-AS1 in GC cell proliferation, migration and invasion. The process was mediated via miR-4698, MTUS1 and the MEK/ERK pathway.
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Affiliation(s)
- Jiangqiao Zhao
- Department of Surgery, Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China
| | - Xiaoning Li
- Department of General Surgery, Baoding First Central Hospital, Baoding, Hebei 071000, P.R. China
| | - Liping Fu
- Department of General Surgery, Cangzhou People's Hospital, Cangzhou, Hebei 061000, P.R. China
| | - Na Zhang
- Department of Radiology, Cangzhou Central Hospital, Cangzhou, Hebei 061000, P.R. China
| | - Jiaping Yang
- Department of General Surgery, Cangzhou People's Hospital, Cangzhou, Hebei 061000, P.R. China
| | - Jianhui Cai
- Department of Surgery, Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China
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15
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Nakayama I, Hirota T, Shinozaki E. BRAF Mutation in Colorectal Cancers: From Prognostic Marker to Targetable Mutation. Cancers (Basel) 2020; 12:cancers12113236. [PMID: 33152998 PMCID: PMC7694028 DOI: 10.3390/cancers12113236] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 10/28/2020] [Accepted: 10/29/2020] [Indexed: 12/14/2022] Open
Abstract
Simple Summary Colorectal cancer with a mutation in an oncogene BRAF has paid much attention, as it comprises a population with dismal prognosis since two decades ago. A series of research since then has successfully changed this malignancy to be treatable with specific treatment. Here we thoroughly overviewed the basic, translational and clinical studies on colorectal cancer with BRAF mutation from a physician’s viewpoint. Accumulating lines of evidence suggest that intervention of the trunk cellular growth signal transduction pathway, namely EGFR-RAS-RAF-MEK-ERK pathway, is a clue to controlling this disease. However, it is not so straightforward. Recent studies unveil the diverse and plastic nature of this signal transduction pathway. We will introduce our endeavor to conquer this condition, based on newly arriving datasets, and discuss how we could open the door to future development of CRC treatment. Abstract The Raf murine sarcoma viral oncogene homolog B (BRAF) mutation is detected in 8–12% of metastatic colorectal cancers (mCRCs) and is strongly correlated with poor prognosis. The recent success of the BEACON CRC study and the development of targeted therapy have led to the determination of BRAF-mutated mCRCs as an independent category. For nearly two decades, a growing body of evidence has established the significance of the BRAF mutation in the development of CRC. Herein, we overview both basic and clinical data relevant to BRAF-mutated CRC, mainly focusing on the development of treatment strategies. This review is organized into eight sections, including clinicopathological features, molecular features, prognosis, the predictive value of anti-epidermal growth factor receptor (EGFR) therapy, resistant mechanisms for BRAF-targeting treatment, the heterogeneity of the BRAF mutation, future perspectives, and conclusions. A characterization of the canonical mitogen-activated protein kinase (MAPK) pathway is essential for controlling this malignancy, and the optimal combination of multiple interventions for treatments remains a point of debate.
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Affiliation(s)
- Izuma Nakayama
- Department of Gastroenterological Chemotherapy, Cancer Institute Hospital of the Japanese Foundation for Cancer Research (JFCR), Tokyo 135-8550, Japan
- Correspondence: (I.N.); (E.S.); Tel.: +81-3-3520-0111
| | - Toru Hirota
- Department of Experimental Pathology, Cancer Institute of the Japanese Foundation for Cancer Research (JFCR), Tokyo 135-8550, Japan;
| | - Eiji Shinozaki
- Department of Gastroenterological Chemotherapy, Cancer Institute Hospital of the Japanese Foundation for Cancer Research (JFCR), Tokyo 135-8550, Japan
- Correspondence: (I.N.); (E.S.); Tel.: +81-3-3520-0111
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16
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Tang Z, Cao X, Zhang Y, Jiang J, Qiao D, Xu H, Cao Y. Two splice variants of the DsMEK1 mitogen-activated protein kinase kinase (MAPKK) are involved in salt stress regulation in Dunaliella salina in different ways. BIOTECHNOLOGY FOR BIOFUELS 2020; 13:147. [PMID: 32843896 PMCID: PMC7439689 DOI: 10.1186/s13068-020-01786-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 04/24/2020] [Indexed: 05/13/2023]
Abstract
BACKGROUND Dunaliella salina can produce glycerol under salt stress, and this production can quickly adapt to changes in external salt concentration. Notably, glycerol is an ideal energy source. In recent years, it has been reported that the mitogen-activated protein kinase cascade pathway plays an important role in regulating salt stress, and in Dunaliella tertiolecta DtMAPK can regulate glycerol synthesis under salt stress. Therefore, it is highly important to study the relationship between the MAPK cascade pathway and salt stress in D. salina and modify it to increase the production of glycerol. RESULTS In our study, we identified and analysed the alternative splicing of DsMEK1 (DsMEK1-X1, DsMEK1-X2) from the unicellular green alga D. salina. DsMEK1-X1 and DsMEK1-X2 were both localized in the cytoplasm. qRT-PCR assays showed that DsMEK1-X2 was induced by salt stress. Overexpression of DsMEK1-X2 revealed a higher increase rate of glycerol production compared to the control and DsMEK1-X1-oe under salt stress. Under salt stress, the expression of DsGPDH2/3/5/6 increased in DsMEK1-X2-oe strains compared to the control. This finding indicated that DsMEK1-X2 was involved in the regulation of DsGPDH expression and glycerol overexpression under salt stress. Overexpression of DsMEK1-X1 increased the proline content and reduced the MDA content under salt stress, and DsMEK1-X1 was able to regulate oxidative stress; thus, we hypothesized that DsMEK1-X1 could reduce oxidative damage under salt stress. Yeast two-hybrid analysis showed that DsMEK1-X2 could interact with DsMAPKKK1/2/3/9/10/17 and DsMAPK1; however, DsMEK1-X1 interacted with neither upstream MAPKKK nor downstream MAPK. DsMEK1-X2-oe transgenic lines increased the expression of DsMAPKKK1/3/10/17 and DsMAPK1, and DsMEK1-X2-RNAi lines decreased the expression of DsMAPKKK2/10/17. DsMEK1-X1-oe transgenic lines did not exhibit increased gene expression, except for DsMAPKKK9. CONCLUSION Our findings demonstrate that DsMEK1-X1 and DsMEK1-X2 can respond to salt stress by two different pathways. The DsMEK1-X1 response to salt stress reduces oxidative damage; however, the DsMAPKKK1/2/3/9/10/17-DsMEK1-X2-DsMAPK1 cascade is involved in the regulation of DsGPDH expression and thus glycerol synthesis under salt stress.
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Affiliation(s)
- Ziyi Tang
- Microbiology and Metabolic Engineering Key Laboratory of Sichuan Province, Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610065 China
| | - Xiyue Cao
- Microbiology and Metabolic Engineering Key Laboratory of Sichuan Province, Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610065 China
| | - Yiping Zhang
- Microbiology and Metabolic Engineering Key Laboratory of Sichuan Province, Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610065 China
| | - Jia Jiang
- Microbiology and Metabolic Engineering Key Laboratory of Sichuan Province, Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610065 China
| | - Dairong Qiao
- Microbiology and Metabolic Engineering Key Laboratory of Sichuan Province, Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610065 China
| | - Hui Xu
- Microbiology and Metabolic Engineering Key Laboratory of Sichuan Province, Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610065 China
| | - Yi Cao
- Microbiology and Metabolic Engineering Key Laboratory of Sichuan Province, Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610065 China
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17
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He J, Wink S, de Bont H, Le Dévédec S, Zhang Y, van de Water B. FRET biosensor-based kinase inhibitor screen for ERK and AKT activity reveals differential kinase dependencies for proliferation in TNBC cells. Biochem Pharmacol 2019; 169:113640. [DOI: 10.1016/j.bcp.2019.113640] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 09/13/2019] [Indexed: 11/26/2022]
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18
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Lin X, Xiaoqin H, Jiayu C, Li F, Yue L, Ximing X. Long non-coding RNA miR143HG predicts good prognosis and inhibits tumor multiplication and metastasis by suppressing mitogen-activated protein kinase and Wnt signaling pathways in hepatocellular carcinoma. Hepatol Res 2019; 49:902-918. [PMID: 30945380 DOI: 10.1111/hepr.13344] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 02/26/2019] [Accepted: 03/25/2019] [Indexed: 02/06/2023]
Abstract
AIM The expression of microRNA143HG (miR143HG) was significantly downregulated in hepatocellular carcinoma (HCC) tissues by bioinformatics analysis. This study aimed to determine the role of miR143HG in HCC cell proliferation and metastasis. METHODS Fifty patients with HCC were divided into two groups based on median miR143HG expression levels. The correlation between miR143HG expression and prognosis, and the correlations between miR143HG expression and the patients' clinicopathological characteristics were evaluated based on the two groups. Gain-of-function and loss-of-function measurements of miR143HG were carried out to verify the biological function of miR143HG by Cell Counting Kit-8, EdU, Transwell, and western blotting assays and flow cytometric analysis. The underlying mechanism was explored by quantitative real-time polymerase chain reaction of miRNA (miR-155-5p and miR-26b-5p), luciferase reporter assay, western blotting of Wnt signaling pathway-related proteins (β-catenin, adenomatous polyposis coli (APC), glycogen synthase kinase 3β (GSK3β), ZEB1, and E-cadherin), mitogen-activated protein kinase (MAPK) signaling pathway-related proteins (extracellular signal-regulated kinase [ERK]1/2, p-ERK1/2, c-Jun N-terminal kinase (JNK), p-JNK, P38, and p-P38), and immunofluorescence staining of β-catenin. RESULTS miR143HG expression was markedly downregulated in HCC tissues and cells. Its expression was associated with the presence or absence of portal vein tumor thrombus, hepatitis B virus infection, relapse and metastasis, and Barcelona Clinic Liver Cancer stage. Additionally, miR143HG expression predicted a good prognosis and acted as an independent prognostic factor in HCC for overall survival. Overexpression of miR143HG suppressed HCC cell proliferation and metastasis, and induced cell cycle arrest and apoptosis. Consistently, the depletion of miR143HG resulted in the opposite phenomenon of the aforementioned results. miR143HG inhibits miR-155 expression; miR-155 directly targets APC, which is a negative regulator of the Wnt/β-catenin pathway, so miR143HG can act on the Wnt pathway. miR143HG was further found to reduce the expression of β-catenin and block the nuclear accumulation of β-catenin, ultimately inhibiting the activation of the Wnt pathway. It inhibits the expression of Wnt downstream target gene ZEB1, and then E-cadherin expression is increased and cell motility is inhibited. Furthermore, miR143HG exerts its antiproliferative function by influencing the MAPK signaling pathway and then inducing G2 /M arrest in cells. CONCLUSION This study showed that miR143HG plays critical roles in the development and progression of HCC by suppressing the MAPK and Wnt signaling pathways.
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Affiliation(s)
- Xiong Lin
- Cancer Center, Renmin Hospital of Wuhan University, Wuhan, China
| | - He Xiaoqin
- Cancer Center, Renmin Hospital of Wuhan University, Wuhan, China
| | - Chen Jiayu
- Cancer Center, Renmin Hospital of Wuhan University, Wuhan, China
| | - Fan Li
- Cancer Center, Renmin Hospital of Wuhan University, Wuhan, China
| | - Li Yue
- Cancer Center, Renmin Hospital of Wuhan University, Wuhan, China
| | - Xu Ximing
- Cancer Center, Renmin Hospital of Wuhan University, Wuhan, China
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Prognostic significance of CDC25C in lung adenocarcinoma: An analysis of TCGA data. Cancer Genet 2019; 233-234:67-74. [PMID: 31109596 DOI: 10.1016/j.cancergen.2019.04.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 03/16/2019] [Accepted: 04/03/2019] [Indexed: 01/01/2023]
Abstract
OBJECTIVE Cell division cycle 25C (CDC25C) is involved in the regulation of the G2/M phase transition and is associated with various cancers, including non-small cell lung cancer. We evaluated its prognostic value in lung adenocarcinoma (LUAD) based on data from The Cancer Genome Atlas (TCGA). METHODS Kruskal-Wallis test, Wilcoxon signed-rank test, and logistic regression were used to evaluate relationships between clinical-pathologic features and CDC25C expression. Cox regression analyses and the Kaplan-Meier method were used to evaluate factors contributing to prognosis. Gene set enrichment analysis (GSEA) was performed. RESULTS High CDC25C expression in LUAD was associated with a high tumor extent (odds ratio (OR) = 2.23 (1.52-3.29), P < 0.001), regional lymph node invasion (OR = 2.18 (1.48-3.22), P < 0.001), OR = advanced stage (OR = 2.47 (1.72-3.59), P < 0.001), and poor status (OR = 1.87 (1.19-2.96), P = 0.007). A univariate analysis showed that high CDC25C expression is associated with a short overall survival (OS) (HR: 1.873; 95% CI: 1.385-2.535; P < 0.001) and poor progression-free survival (HR: 1.503; 95% CI: 1.173-1.926; P = 0.0012). In a multivariate analysis, high CDC25C expression was associated with poor OS (HR = 2.193; CI: 1.394-3.452, P = 0.001). GSEA showed the enrichment of cell cycle, apoptosis, p53-dependent G1 DNA damage response, S-phase, mitotic M-M G1 phases, and FA-mediated cell death in the CDC25C high-expression phenotype. CONCLUSIONS CDC25C predicts poor prognosis in LUAD and may function in cell cycle regulation and FAS-mediated apoptosis.
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20
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Xu P, Chen AY, Ganaie SS, Cheng F, Shen W, Wang X, Kleiboeker S, Li Y, Qiu J. The 11-Kilodalton Nonstructural Protein of Human Parvovirus B19 Facilitates Viral DNA Replication by Interacting with Grb2 through Its Proline-Rich Motifs. J Virol 2019; 93:e01464-18. [PMID: 30282717 PMCID: PMC6288338 DOI: 10.1128/jvi.01464-18] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 10/01/2018] [Indexed: 12/27/2022] Open
Abstract
Lytic infection of human parvovirus B19 (B19V) takes place exclusively in human erythroid progenitor cells of bone marrow and fetal liver, which disrupts erythropoiesis. During infection, B19V expresses three nonstructural proteins (NS1, 11-kDa, and 7.5-kDa) and two structural proteins (VP1 and VP2). While NS1 is essential for B19V DNA replication, 11-kDa enhances viral DNA replication significantly. In this study, we confirmed the enhancement role of 11-kDa in viral DNA replication and elucidated the underlying mechanism. We found that 11-kDa specially interacts with cellular growth factor receptor-bound protein 2 (Grb2) during virus infection and in vitro We determined a high affinity interaction between 11-kDa and Grb2 that has an equilibrium dissociation constant (KD ) value of 18.13 nM. In vitro, one proline-rich motif was sufficient for 11-kDa to sustain a strong interaction with Grb2. In consistence, in vivo during infection, one proline-rich motif was enough for 11-kDa to significantly reduce phosphorylation of extracellular signal-regulated kinase (ERK). Mutations of all three proline-rich motifs of 11-kDa abolished its capability to reduce ERK activity and, accordingly, decreased viral DNA replication. Transduction of a lentiviral vector encoding a short hairpin RNA (shRNA) targeting Grb2 decreased the expression of Grb2 as well as the level of ERK phosphorylation, which resulted in an increase of B19V replication. These results, in concert, indicate that the B19V 11-kDa protein interacts with cellular Grb2 to downregulate ERK activity, which upregulates viral DNA replication.IMPORTANCE Human parvovirus B19 (B19V) infection causes hematological disorders and is the leading cause of nonimmunological fetal hydrops during pregnancy. During infection, B19V expresses two structural proteins, VP1 and VP2, and three nonstructural proteins, NS1, 11-kDa, and 7.5-kDa. While NS1 is essential, 11-kDa plays an enhancing role in viral DNA replication. Here, we elucidated a mechanism underlying 11-kDa protein-regulated B19V DNA replication. 11-kDa is tightly associated with cellular growth factor receptor-bound protein 2 (Grb2) during infection. In vitro, 11-kDa interacts with Grb2 with high affinity through three proline-rich motifs, of which at least one is indispensable for the regulation of viral DNA replication. 11-kDa and Grb2 interaction disrupts extracellular signal-regulated kinase (ERK) signaling, which mediates upregulation of B19V replication. Thus, our study reveals a novel mechanism of how a parvoviral small nonstructural protein regulates viral DNA replication by interacting with a host protein that is predominately expressed in the cytoplasm.
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Affiliation(s)
- Peng Xu
- Department of Microbiology, Molecular Genetics and Immunology, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Aaron Yun Chen
- Department of Microbiology, Molecular Genetics and Immunology, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Safder S Ganaie
- Department of Microbiology, Molecular Genetics and Immunology, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Fang Cheng
- Department of Microbiology, Molecular Genetics and Immunology, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Weiran Shen
- Department of Microbiology, Molecular Genetics and Immunology, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Xiaomei Wang
- Department of Microbiology, Molecular Genetics and Immunology, University of Kansas Medical Center, Kansas City, Kansas, USA
- Department of Biological Science and Technology, Wuhan University of Bioengineering, Wuhan, China
| | - Steve Kleiboeker
- Department of Research and Development, Viracor Eurofins Laboratories, Lee's Summit, Missouri, USA
| | - Yi Li
- Department of Biological Science and Technology, Wuhan University of Bioengineering, Wuhan, China
| | - Jianming Qiu
- Department of Microbiology, Molecular Genetics and Immunology, University of Kansas Medical Center, Kansas City, Kansas, USA
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21
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Moonen L, D'Haese PC, Vervaet BA. Epithelial Cell Cycle Behaviour in the Injured Kidney. Int J Mol Sci 2018; 19:E2038. [PMID: 30011818 PMCID: PMC6073451 DOI: 10.3390/ijms19072038] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Accepted: 07/10/2018] [Indexed: 02/06/2023] Open
Abstract
Acute kidney injury (AKI), commonly caused by ischemia-reperfusion injury, has far-reaching health consequences. Despite the significant regenerative capacity of proximal tubular epithelium cells (PTCs), repair frequently fails, leading to the development of chronic kidney disease (CKD). In the last decade, it has been repeatedly demonstrated that dysregulation of the cell cycle can cause injured kidneys to progress to CKD. More precisely, severe AKI causes PTCs to arrest in the G1/S or G2/M phase of the cell cycle, leading to maladaptive repair and a fibrotic outcome. The mechanisms causing these arrests are far from known. The arrest might, at least partially, be attributed to DNA damage since activation of the DNA-damage response pathway leads to cell cycle arrest. Alternatively, cytokine signalling via nuclear factor kappa beta (NF-κβ) and p38-mitogen-activated protein kinase (p38-MAPK) pathways, and reactive oxygen species (ROS) can play a role independent of DNA damage. In addition, only a handful of cell cycle regulators (e.g., p53, p21) have been thoroughly studied during renal repair. Still, why and how PTCs decide to arrest their cell cycle and how this arrest can efficiently be overcome remain open and challenging questions. In this review we will discuss the evidence for cell cycle involvement during AKI and development of CKD together with putative therapeutic approaches.
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Affiliation(s)
- Lies Moonen
- Laboratory of Pathophysiology, Department of Biomedical Sciences, University of Antwerp, 2000 Antwerp, Belgium.
| | - Patrick C D'Haese
- Laboratory of Pathophysiology, Department of Biomedical Sciences, University of Antwerp, 2000 Antwerp, Belgium.
| | - Benjamin A Vervaet
- Laboratory of Pathophysiology, Department of Biomedical Sciences, University of Antwerp, 2000 Antwerp, Belgium.
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22
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Shen Y, Sherman JW, Chen X, Wang R. Phosphorylation of CDC25C by AMP-activated protein kinase mediates a metabolic checkpoint during cell-cycle G 2/M-phase transition. J Biol Chem 2018; 293:5185-5199. [PMID: 29467227 PMCID: PMC5892595 DOI: 10.1074/jbc.ra117.001379] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 02/01/2018] [Indexed: 12/30/2022] Open
Abstract
From unicellular to multicellular organisms, cell-cycle progression is tightly coupled to biosynthetic and bioenergetic demands. Accumulating evidence has demonstrated the G1/S-phase transition as a key checkpoint where cells respond to their metabolic status and commit to replicating the genome. However, the mechanism underlying the coordination of metabolism and the G2/M-phase transition in mammalian cells remains unclear. Here, we show that the activation of AMP-activated protein kinase (AMPK), a highly conserved cellular energy sensor, significantly delays mitosis entry. The cell-cycle G2/M-phase transition is controlled by mitotic cyclin-dependent kinase complex (CDC2-cyclin B), which is inactivated by WEE1 family protein kinases and activated by the opposing phosphatase CDC25C. AMPK directly phosphorylates CDC25C on serine 216, a well-conserved inhibitory phosphorylation event, which has been shown to mediate DNA damage–induced G2-phase arrest. The acute induction of CDC25C or suppression of WEE1 partially restores mitosis entry in the context of AMPK activation. These findings suggest that AMPK-dependent phosphorylation of CDC25C orchestrates a metabolic checkpoint for the cell-cycle G2/M-phase transition.
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Affiliation(s)
- Yuqing Shen
- From the Center for Childhood Cancer and Blood Diseases, Hematology/Oncology and BMT, Research Institute at Nationwide Children's Hospital, Ohio State University, Columbus, Ohio 43205 and.,the Department of Microbiology and Immunology, Key Laboratory of Developmental Genes and Human Disease, Ministry of Education, Medical School, Southeast University, Nanjing 210009, China
| | - John William Sherman
- From the Center for Childhood Cancer and Blood Diseases, Hematology/Oncology and BMT, Research Institute at Nationwide Children's Hospital, Ohio State University, Columbus, Ohio 43205 and
| | - Xuyong Chen
- From the Center for Childhood Cancer and Blood Diseases, Hematology/Oncology and BMT, Research Institute at Nationwide Children's Hospital, Ohio State University, Columbus, Ohio 43205 and
| | - Ruoning Wang
- From the Center for Childhood Cancer and Blood Diseases, Hematology/Oncology and BMT, Research Institute at Nationwide Children's Hospital, Ohio State University, Columbus, Ohio 43205 and
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23
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Mojena M, Povo-Retana A, González-Ramos S, Fernández-García V, Regadera J, Zazpe A, Artaiz I, Martín-Sanz P, Ledo F, Boscá L. Benzylamine and Thenylamine Derived Drugs Induce Apoptosis and Reduce Proliferation, Migration and Metastasis Formation in Melanoma Cells. Front Oncol 2018; 8:328. [PMID: 30191142 PMCID: PMC6115490 DOI: 10.3389/fonc.2018.00328] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Accepted: 07/31/2018] [Indexed: 02/05/2023] Open
Abstract
Melanomas are heterogeneous and aggressive tumors, and one of the worse in prognosis. Melanoma subtypes follow distinct pathways until terminal oncogenic transformation. Here, we have evaluated a series of molecules that exhibit potent cytotoxic effects over the murine and human melanoma cell lines B16F10 and MalMe-3M, respectively, both ex vivo and in animals carrying these melanoma cells. Ex vivo mechanistic studies on molecular targets involved in melanoma growth, migration and viability were evaluated in cultured cells treated with these drugs which exhibited potent proapoptotic and cytotoxic effects and reduced cell migration. These drugs altered the Wnt/β-catenin pathway, which is important for the oncogenic phenotype of melanoma cells. In in vivo experiments, male C57BL/6 or nude mice were injected with melanoma cells that rapidly expanded in these animals and, in some cases were able to form metastasis in lungs. Treatment with anti-tumor drugs derived from benzylamine and 2-thiophenemethylamine (F10503LO1 and related compounds) significantly attenuated tumor growth, impaired cell migration, and reduced the metastatic activity. Several protocols of administration were applied, all of them leading to significant reduction in the tumor size and enhanced animal survival. Tumor cells carrying a luciferase transgene allowed a time-dependent study on the progression of the tumor. Molecular analysis of the pathways modified by F10503LO1 and related compounds defined the main relevant targets for tumor regression: the activation of pro-apoptotic and anti-proliferative routes. These data might provide the proof-of-principle and rationale for its further clinical evaluation.
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Affiliation(s)
- Marina Mojena
- Instituto de Investigaciones Biomédicas Alberto Sols (CSIC-UAM), Madrid, Spain
| | - Adrián Povo-Retana
- Instituto de Investigaciones Biomédicas Alberto Sols (CSIC-UAM), Madrid, Spain
| | - Silvia González-Ramos
- Instituto de Investigaciones Biomédicas Alberto Sols (CSIC-UAM), Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares y Hepáticas y Digestivas, ISC III, Madrid, Spain
| | | | - Javier Regadera
- Departamento de Anatomía, Histología y Neurociencia, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain
| | - Arturo Zazpe
- R&D+i Department Faes-Farma, Avda Autonomía, Leioa, Spain
| | - Inés Artaiz
- R&D+i Department Faes-Farma, Avda Autonomía, Leioa, Spain
| | - Paloma Martín-Sanz
- Instituto de Investigaciones Biomédicas Alberto Sols (CSIC-UAM), Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares y Hepáticas y Digestivas, ISC III, Madrid, Spain
| | - Francisco Ledo
- R&D+i Department Faes-Farma, Avda Autonomía, Leioa, Spain
- *Correspondence: Francisco Ledo
| | - Lisardo Boscá
- Instituto de Investigaciones Biomédicas Alberto Sols (CSIC-UAM), Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares y Hepáticas y Digestivas, ISC III, Madrid, Spain
- Lisardo Boscá
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24
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Paul M, Ghosal A, Bandyopadhyay S, G P, Selvam U, Rai N, Sundaram G. The fission yeast MAPK Spc1 senses perturbations in Cdc25 and Wee1 activities and targets Rad24 to restore this balance. Yeast 2017; 35:261-271. [PMID: 29065217 DOI: 10.1002/yea.3289] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 10/11/2017] [Accepted: 10/12/2017] [Indexed: 12/15/2022] Open
Abstract
Mitogen-activated protein kinases (MAPKs) play vital roles in multiple cellular processes and represent prominently pursued targets for development of therapeutic regimes. The MAPK Spc1 (p38 homologue) is known to be very important for both mitotic promotion and delay in Schizosaccharomyces pombe. However, the mechanism responsible for mitotic inhibition has remained elusive. Cdc25 (Cdc2 activator) and Wee1 (Cdc2 inhibtor) are important determinants of mitotic timing in all eukaryotes. Our results show that Spc1 can sense the perturbations in the balance of Cdc25 and Wee1 activities in S. pombe and that its function as a mitotic inhibitor is very important for controlling the same. An Spc1-Srk1-Rad24-dependent pathway for mitotic inhibition has been reported earlier.Here we report the presence of an alternative mechanism wherein Spc1 targets the 14-3-3 protein, Rad24, independently of Srk1, leading to relocalization of Cdc25 and mitotic inhibition. Our observations suggest that this pathway can serve as a backup mechanism for Cdc2 inactivation in the absence of Wee1.
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Affiliation(s)
- Madhurima Paul
- Department of Biochemistry and Centre for Research in Nanoscience and Nanotechnology, University of Calcutta, 35, Ballygunje Circular Road, Kolkata, 700019, WB, India
| | - Agamani Ghosal
- Department of Biochemistry and Centre for Research in Nanoscience and Nanotechnology, University of Calcutta, 35, Ballygunje Circular Road, Kolkata, 700019, WB, India
| | - Sushobhana Bandyopadhyay
- Department of Biochemistry and Centre for Research in Nanoscience and Nanotechnology, University of Calcutta, 35, Ballygunje Circular Road, Kolkata, 700019, WB, India
| | - Prakadeeswari G
- Department of Biochemistry and Centre for Research in Nanoscience and Nanotechnology, University of Calcutta, 35, Ballygunje Circular Road, Kolkata, 700019, WB, India
| | - Upasna Selvam
- Department of Biochemistry and Centre for Research in Nanoscience and Nanotechnology, University of Calcutta, 35, Ballygunje Circular Road, Kolkata, 700019, WB, India
| | - Neeraj Rai
- Department of Biochemistry and Centre for Research in Nanoscience and Nanotechnology, University of Calcutta, 35, Ballygunje Circular Road, Kolkata, 700019, WB, India
| | - Geetanjali Sundaram
- Department of Biochemistry and Centre for Research in Nanoscience and Nanotechnology, University of Calcutta, 35, Ballygunje Circular Road, Kolkata, 700019, WB, India
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25
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OIP5, a target of miR-15b-5p, regulates hepatocellular carcinoma growth and metastasis through the AKT/mTORC1 and β-catenin signaling pathways. Oncotarget 2017; 8:18129-18144. [PMID: 28184024 PMCID: PMC5392313 DOI: 10.18632/oncotarget.15185] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 01/16/2017] [Indexed: 12/12/2022] Open
Abstract
Opa interacting protein 5 (OIP5) is upregulated in some types of human cancers, but the biological implications of its upregulation have not yet been clarified in human hepatocellular carcinoma (HCC). In this study, the signaling pathway downstream of OIP5 was analyzed by proteome kinase profiling. A putative microRNA targeting OIP5 was identified using a miRNA PCR array. Tumorigenicity and metastatic ability were examined in an orthotopic animal model. OIP5 expression was strongly detected in early and advanced tumors via gene expression profiling and immunohistochemical staining analyses. Cells with knockdown of OIP5 via target shRNA exhibited reduced hepatic mass formation and metastatic tumor nodules in an orthotopic mouse model. OIP5-induced AKT activation was mediated by both mTORC2 and p38/PTEN activation. AKT activation was linked to mTORC1 and GSK-3β/β-catenin signaling, which are primarily associated with tumor cell growth and metastasis, respectively. miR-15b-5p, which targets OIP5, efficiently inhibited OIP5-mediated mTORC1 and GSK-3β/β-catenin signaling. These findings suggest that OIP5 may be involved in HCC growth and metastasis and that miR-15b-5p inhibits OIP5-mediated oncogenic signaling in HCC.
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26
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Chatterjee S, Huang EHB, Christie I, Burns TF. Reactivation of the p90RSK-CDC25C Pathway Leads to Bypass of the Ganetespib-Induced G 2-M Arrest and Mediates Acquired Resistance to Ganetespib in KRAS-Mutant NSCLC. Mol Cancer Ther 2017; 16:1658-1668. [PMID: 28566436 DOI: 10.1158/1535-7163.mct-17-0114] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 05/08/2017] [Accepted: 05/12/2017] [Indexed: 11/16/2022]
Abstract
A subset of non-small cell lung cancers (NSCLC) are dependent upon oncogenic driver mutations, including the most frequently observed driver mutant KRAS, which is associated with a poor prognosis. As direct RAS targeting in the clinic has been unsuccessful to date, use of Hsp90 inhibitors appeared to be a promising therapy for KRAS-mutant NSCLC; however, limited clinical efficacy was observed due to rapid resistance. Furthermore, the combination of the Hsp90 inhibitor (Hsp90i), ganetespib, and docetaxel was tested in a phase III clinical trial and failed to demonstrate benefit. Here, we investigated the mechanism(s) of resistance to ganetespib and explored why the combination with docetaxel failed in the clinic. We have not only identified a critical role for the bypass of the G2-M cell-cycle checkpoint as a mechanism of ganetespib resistance (GR) but have also found that GR leads to cross-resistance to docetaxel. Reactivation of p90RSK and its downstream target, CDC25C, was critical for GR and mediated the bypass of a G2-M arrest. Overexpression of either p90RSK or CDC25C lead to bypass of G2-M arrest and induced ganetespib resistance in vitro and in vivo Moreover, resistance was dependent on p90RSK/CDC25C signaling, as synthetic lethality to ERK1/2, p90RSK, or CDC25C inhibitors was observed. Importantly, the combination of ganetespib and p90RSK or CDC25C inhibitors was highly efficacious in parental cells. These studies provide a way forward for Hsp90 inhibitors through the development of novel rationally designed Hsp90 inhibitor combinations that may prevent or overcome resistance to Hsp90i. Mol Cancer Ther; 16(8); 1658-68. ©2017 AACR.
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Affiliation(s)
- Suman Chatterjee
- Department of Medicine, Division of Hematology Oncology, University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania
| | - Eric H-B Huang
- Department of Medicine, Division of Hematology Oncology, University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania
| | - Ian Christie
- Department of Medicine, Division of Hematology Oncology, University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania
| | - Timothy F Burns
- Department of Medicine, Division of Hematology Oncology, University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania.
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27
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Obaid NM, Bedard K, Huang WY. Strategies for Overcoming Resistance in Tumours Harboring BRAF Mutations. Int J Mol Sci 2017; 18:ijms18030585. [PMID: 28282860 PMCID: PMC5372601 DOI: 10.3390/ijms18030585] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 02/07/2017] [Accepted: 02/23/2017] [Indexed: 12/19/2022] Open
Abstract
The development of resistance to previously effective treatments has been a challenge for health care providers and a fear for patients undergoing cancer therapy. This is an unfortunately frequent occurrence for patients undergoing targeted therapy for tumours harboring the activating V600E mutation of the BRAF gene. Since the initial identification of the BRAF mutation in 2002, a series of small molecular inhibitors that target the BRAFV600E have been developed, but intrinsic and acquired resistance to these drugs has presented an ongoing challenge. More recently, improvements in therapy have been achieved by combining the use of BRAF inhibitors with other drugs, such as inhibitors of the downstream effector mitogen activated protein kinase (MAPK)/extracellular-signal regulated kinase (ERK) kinase (MEK). Despite improved success in response rates and in delaying resistance using combination therapy, ultimately, the acquisition of resistance remains a concern. Recent research articles have shed light on some of the underlying mechanisms of this resistance and have proposed numerous strategies that might be employed to overcome or avoid resistance to targeted therapies. This review will explore some of the resistance mechanisms, compare what is known in melanoma cancer to colorectal cancer, and discuss strategies under development to manage the development of resistance.
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Affiliation(s)
| | - Karen Bedard
- Department of Pathology, Dalhousie University, Halifax, NS B3H 4R2, Canada.
| | - Weei-Yuarn Huang
- Department of Pathology, Dalhousie University, Halifax, NS B3H 4R2, Canada.
- Department of Pathology, Nova Scotia Health Authority, Halifax, NS B3H 1V8, Canada.
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28
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Jiang X, Jiang X, Feng Y, Xu R, Wang Q, Deng H. Proteomic Analysis of eIF5B Silencing-Modulated Proteostasis. PLoS One 2016; 11:e0168387. [PMID: 27959964 PMCID: PMC5154608 DOI: 10.1371/journal.pone.0168387] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 11/29/2016] [Indexed: 11/17/2022] Open
Abstract
Protein translational machinery is an important component of the proteostasis network that maintains cellular proteostasis and regulates aging and other cellular processes. Ample evidence indicates that inhibition of translation initiation factor activities enhances stress resistance in model organisms. Eukaryotic translation initiation factor 5B (eIF5B) acts by joining the pre-40S subunit with the 60S ribosomal unit to form an 80S-like complex during protein translational initiation. Reduced eIF5B expression may disrupt proteostasis and trigger cellular processes associated with stress responses. In this study, the physiological effects of altered eIF5B expression were examined in 293T and HepG2 cells. Cells with eIF5B-knockdown (eIF5B-KN) grew more slowly than control cells, and had a lower level of intracellular reactive oxygen species (ROS), increased resistance to oxidative stress and enhanced autophagy. Proteomic analysis showed that eIF5B knockdown resulted in upregulation of 88 proteins and downregulation of 130 proteins compared with control cells. The differentially expressed proteins were associated with diverse cellular processes including amino acid metabolism, RNA processing and protein metabolism, and DNA synthesis. Autonomous downregulation of the mitogen-activated protein kinase (MAPK) signaling pathway was identified as confirmed by western blotting and qPCR. We proposed that deactivation of MAPK pathway modulated proteostasis and induced prolonged S-phase of the cell-cycle, contributing to the slow growth of eIF5B-KN cells. eIF5B silencing also inactivated the mTOR pathway, downregulated glutamine transporters, enhanced autophagy, and decreased 28S rRNA and 5.8S rRNA expression levels which were reversed by restoration of eIF5B expression. Taken together, these results suggest that eIF5B silencing provides a negative feedback to deactivate MAPK signaling, leading to reduced cell growth. These findings provide a useful resource to further biological exploration of the functions of protein synthesis in regulation of proteostasis and stress responses.
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Affiliation(s)
- Xu Jiang
- MOE Key Laboratory of Bioinformatics, School of Life Sciences, Tsinghua University, Beijing, China
| | - Xiaoyong Jiang
- MOE Key Laboratory of Bioinformatics, School of Life Sciences, Tsinghua University, Beijing, China
| | - Yun Feng
- MOE Key Laboratory of Bioinformatics, School of Life Sciences, Tsinghua University, Beijing, China
| | - Renhua Xu
- School of Nursing, Binzhou Medical University, Yantai, China
| | - Qingtao Wang
- Beijing Chaoyang Hospital Affiliated to Capital Medical University, Beijing, China
| | - Haiteng Deng
- MOE Key Laboratory of Bioinformatics, School of Life Sciences, Tsinghua University, Beijing, China
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Li JY, Pan LQ, Miao JJ, Xu RY, Xu WJ. De novo assembly and characterization of the ovarian transcriptome reveal mechanisms of the final maturation stage in Chinese scallop Chlamys farreri. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS 2016; 20:118-124. [DOI: 10.1016/j.cbd.2016.08.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 08/10/2016] [Accepted: 08/11/2016] [Indexed: 12/14/2022]
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30
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Wang Z, Guo Q, Wang R, Xu G, Li P, Sun Y, She X, Liu Q, Chen Q, Yu Z, Liu C, Xiong J, Li G, Wu M. The D Domain of LRRC4 anchors ERK1/2 in the cytoplasm and competitively inhibits MEK/ERK activation in glioma cells. J Hematol Oncol 2016; 9:130. [PMID: 27884160 PMCID: PMC5123285 DOI: 10.1186/s13045-016-0355-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 11/08/2016] [Indexed: 12/30/2022] Open
Abstract
Background As a well-characterized key player in various signal transduction networks, extracellular-signal-regulated kinase (ERK1/2) has been widely implicated in the development of many malignancies. We previously found that Leucine-rich repeat containing 4 (LRRC4) was a tumor suppressor and a negative regulator of the ERK/MAPK pathway in glioma tumorigenesis. However, the precise molecular role of LRRC4 in ERK signal transmission is unclear. Methods The interaction between LRRC4 and ERK1/2 was assessed by co-immunoprecipitation and GST pull-down assays in vivo and in vitro. We also investigated the interaction of LRRC4 and ERK1/2 and the role of the D domain in ERK activation in glioma cells. Results Here, we showed that LRRC4 and ERK1/2 interact via the D domain and CD domain, respectively. Following EGF stimuli, the D domain of LRRC4 anchors ERK1/2 in the cytoplasm and abrogates ERK1/2 activation and nuclear translocation. In glioblastoma cells, ectopic LRRC4 expression competitively inhibited the interaction of endogenous mitogen-activated protein kinase (MEK) and ERK1/2. Mutation of the D domain decreased the LRRC4-mediated inhibition of MAPK signaling and its anti-proliferation and anti-invasion roles. Conclusions Our results demonstrated that the D domain of LRRC4 anchors ERK1/2 in the cytoplasm and competitively inhibits MEK/ERK activation in glioma cells. These findings identify a new mechanism underlying glioblastoma progression and suggest a novel therapeutic strategy by restoring the activity of LRRC4 to decrease MAPK cascade activation. Electronic supplementary material The online version of this article (doi:10.1186/s13045-016-0355-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Zeyou Wang
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China.,Cancer Research Institute, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Central South University, Changsha, Hunan, 410008, China.,Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, China.,Department of Laboratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, 410011, China
| | - Qin Guo
- Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, China
| | - Rong Wang
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China.,Cancer Research Institute, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Central South University, Changsha, Hunan, 410008, China.,Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, China
| | - Gang Xu
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China.,Cancer Research Institute, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Central South University, Changsha, Hunan, 410008, China.,Medical College, University of South China, Hengyang, Hunan, 421001, China
| | - Peiyao Li
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China.,Cancer Research Institute, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Central South University, Changsha, Hunan, 410008, China.,Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, China
| | - Yingnan Sun
- Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya Medical School, Central South University, Changsha, 410013, Hunan, China
| | - Xiaoling She
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China.,Cancer Research Institute, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Central South University, Changsha, Hunan, 410008, China.,Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, China.,Department of Pathology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, 410011, China
| | - Qiang Liu
- Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, China
| | - Qiong Chen
- Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya Medical School, Central South University, Changsha, 410013, Hunan, China
| | - Zhibin Yu
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China.,Cancer Research Institute, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Central South University, Changsha, Hunan, 410008, China.,Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, China
| | - Changhong Liu
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China.,Cancer Research Institute, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Central South University, Changsha, Hunan, 410008, China.,Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, China
| | - Jing Xiong
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China.,Cancer Research Institute, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Central South University, Changsha, Hunan, 410008, China.,Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
| | - Guiyuan Li
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China. .,Cancer Research Institute, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Central South University, Changsha, Hunan, 410008, China. .,Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, China.
| | - Minghua Wu
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China. .,Cancer Research Institute, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Central South University, Changsha, Hunan, 410008, China. .,Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, China.
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Bai Y, Wang J, Han J, Xie XL, Ji CG, Yin J, Chen L, Wang CK, Jiang XY, Qi W, Jiang HQ. BCL2L10 inhibits growth and metastasis of hepatocellular carcinoma both in vitro and in vivo. Mol Carcinog 2016; 56:1137-1149. [PMID: 27770580 DOI: 10.1002/mc.22580] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Revised: 10/10/2016] [Accepted: 10/13/2016] [Indexed: 01/13/2023]
Affiliation(s)
- Yun Bai
- Hebei Key Laboratory of Gastroenterology; Department of Gastroenterology; Hebei Institute of Gastroenterology; The Second Hospital of Hebei Medical University; Shijiazhuang Hebei China
- Department of Gastroenterology; Hebei General Hospital; Shijiazhuang Hebei China
| | - Jia Wang
- Hebei Key Laboratory of Gastroenterology; Department of Gastroenterology; Hebei Institute of Gastroenterology; The Second Hospital of Hebei Medical University; Shijiazhuang Hebei China
- Ronghe Biotechnology Co., Ltd.; Shijiazhuang Hebei China
| | - Jing Han
- Hebei Key Laboratory of Gastroenterology; Department of Gastroenterology; Hebei Institute of Gastroenterology; The Second Hospital of Hebei Medical University; Shijiazhuang Hebei China
| | - Xiao-Li Xie
- Hebei Key Laboratory of Gastroenterology; Department of Gastroenterology; Hebei Institute of Gastroenterology; The Second Hospital of Hebei Medical University; Shijiazhuang Hebei China
| | - Cheng-Guang Ji
- Hebei Key Laboratory of Gastroenterology; Department of Gastroenterology; Hebei Institute of Gastroenterology; The Second Hospital of Hebei Medical University; Shijiazhuang Hebei China
- Department of Gastroenterology; The Third Hospital of Hebei Medical University; Shijiazhuang Hebei China
| | - Jie Yin
- Hebei Key Laboratory of Gastroenterology; Department of Gastroenterology; Hebei Institute of Gastroenterology; The Second Hospital of Hebei Medical University; Shijiazhuang Hebei China
| | - Lei Chen
- Hebei Key Laboratory of Gastroenterology; Department of Gastroenterology; Hebei Institute of Gastroenterology; The Second Hospital of Hebei Medical University; Shijiazhuang Hebei China
| | - Cun-Kai Wang
- Hebei Key Laboratory of Gastroenterology; Department of Gastroenterology; Hebei Institute of Gastroenterology; The Second Hospital of Hebei Medical University; Shijiazhuang Hebei China
| | - Xiao-Yu Jiang
- Hebei Key Laboratory of Gastroenterology; Department of Gastroenterology; Hebei Institute of Gastroenterology; The Second Hospital of Hebei Medical University; Shijiazhuang Hebei China
| | - Wei Qi
- Hebei Key Laboratory of Gastroenterology; Department of Gastroenterology; Hebei Institute of Gastroenterology; The Second Hospital of Hebei Medical University; Shijiazhuang Hebei China
| | - Hui-Qing Jiang
- Hebei Key Laboratory of Gastroenterology; Department of Gastroenterology; Hebei Institute of Gastroenterology; The Second Hospital of Hebei Medical University; Shijiazhuang Hebei China
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Human TRIB2 Oscillates during the Cell Cycle and Promotes Ubiquitination and Degradation of CDC25C. Int J Mol Sci 2016; 17:ijms17091378. [PMID: 27563873 PMCID: PMC5037658 DOI: 10.3390/ijms17091378] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 08/04/2016] [Accepted: 08/18/2016] [Indexed: 12/13/2022] Open
Abstract
Tribbles homolog 2 (TRIB2) is a member of the mammalian Tribbles family of serine/threonine pseudokinases (TRIB1-3). Studies of TRIB2 indicate that many of the molecular interactions between the single Drosophila Tribbles (Trbl) protein and interacting partners are evolutionary conserved. In this study, we examined the relationship between TRIB2 and cell division cycle 25 (CDC25) family of dual-specificity protein phosphatases (mammalian homologues of Drosophila String), which are key physiological cell cycle regulators. Using co-immunoprecipitation we demonstrate that TRIB2 interacts with CDC25B and CDC25C selectively. Forced overexpression of TRIB2 caused a marked decrease in total CDC25C protein levels. Following inhibition of the proteasome, CDC25C was stabilized in the nuclear compartment. This implicates TRIB2 as a regulator of nuclear CDC25C turnover. In complementary ubiquitination assays, we show that TRIB2-mediated degradation of CDC25C is associated with lysine-48-linked CDC25C polyubiquitination driven by the TRIB2 kinase-like domain. A cell cycle associated role for TRIB2 is further supported by the cell cycle regulated expression of TRIB2 protein levels. Our findings reveal mitotic CDC25C as a new target of TRIB2 that is degraded via the ubiquitin proteasome system. Inappropriate CDC25C regulation could mechanistically underlie TRIB2 mediated regulation of cellular proliferation in neoplastic cells.
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Yue J, López JM. JNK does not regulate meiotic progression in Xenopus oocytes: The strange case of pJNK and pERK. Dev Biol 2016; 416:42-51. [DOI: 10.1016/j.ydbio.2016.06.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 06/09/2016] [Accepted: 06/09/2016] [Indexed: 01/13/2023]
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34
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Al Nakouzi N, Wang CK, Beraldi E, Jager W, Ettinger S, Fazli L, Nappi L, Bishop J, Zhang F, Chauchereau A, Loriot Y, Gleave M. Clusterin knockdown sensitizes prostate cancer cells to taxane by modulating mitosis. EMBO Mol Med 2016; 8:761-78. [PMID: 27198502 PMCID: PMC4931290 DOI: 10.15252/emmm.201506059] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Clusterin (CLU) is a stress‐activated molecular chaperone that confers treatment resistance to taxanes when highly expressed. While CLU inhibition potentiates activity of taxanes and other anti‐cancer therapies in preclinical models, progression to treatment‐resistant disease still occurs implicating additional compensatory survival mechanisms. Taxanes are believed to selectively target cells in mitosis, a complex mechanism controlled in part by balancing antagonistic roles of Cdc25C and Wee1 in mitosis progression. Our data indicate that CLU silencing induces a constitutive activation of Cdc25C, which delays mitotic exit and hence sensitizes cancer cells to mitotic‐targeting agents such as taxanes. Unchecked Cdc25C activation leads to mitotic catastrophe and cell death unless cells up‐regulate protective mechanisms mediated through the cell cycle regulators Wee1 and Cdk1. In this study, we show that CLU silencing induces a constitutive activation of Cdc25C via the phosphatase PP2A leading to relief of negative feedback inhibition and activation of Wee1‐Cdk1 to promote survival and limit therapeutic efficacy. Simultaneous inhibition of CLU‐regulated cell cycle effector Wee1 may improve synergistic responses of biologically rational combinatorial regimens using taxanes and CLU inhibitors.
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Affiliation(s)
- Nader Al Nakouzi
- The Vancouver Prostate Centre and Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Chris Kedong Wang
- The Vancouver Prostate Centre and Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Eliana Beraldi
- The Vancouver Prostate Centre and Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Wolfgang Jager
- The Vancouver Prostate Centre and Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Susan Ettinger
- The Vancouver Prostate Centre and Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Ladan Fazli
- The Vancouver Prostate Centre and Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Lucia Nappi
- The Vancouver Prostate Centre and Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Jennifer Bishop
- The Vancouver Prostate Centre and Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Fan Zhang
- The Vancouver Prostate Centre and Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Anne Chauchereau
- Department of Cancer Medicine, Gustave Roussy, Cancer Campus, Grand Paris, University of Paris-Sud, Villejuif, France INSERM U981, Villejuif, France
| | - Yohann Loriot
- Department of Cancer Medicine, Gustave Roussy, Cancer Campus, Grand Paris, University of Paris-Sud, Villejuif, France INSERM U981, Villejuif, France
| | - Martin Gleave
- The Vancouver Prostate Centre and Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada
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Hatanaka M, Higashi Y, Kawai K, Su J, Zeng W, Chen X, Kanekura T. CD147-targeted siRNA in A375 malignant melanoma cells induces the phosphorylation of EGFR and downregulates cdc25C and MEK phosphorylation. Oncol Lett 2016; 11:2424-2428. [PMID: 27073491 DOI: 10.3892/ol.2016.4267] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Accepted: 06/22/2015] [Indexed: 01/24/2023] Open
Abstract
The Raf-MEK-ERK signaling pathway is important during oncogenesis. An activating mutation of BRAF constitutively activates the Raf-MEK-ERK signaling cascade, and has been identified in ~70% of malignant melanomas (MMs). Cluster of differentiation 147 (CD147)/basigin is an integral plasma membrane protein belonging to the immunoglobulin superfamily. The protein is highly expressed on MM cells, and promotes cellular proliferation and tumor growth. The present study investigated the correlation between CD147 expression and Raf-MEK-ERK signaling in MM using the A375 human MM cell line, which harbors the activating mutation of BRAF. The phosphorylation of epidermal growth factor receptor (EGFR) was upregulated, and mitogen-activated protein kinase kinase (MEK) and cell division cycle 25C phosphorylation was downregulated by CD147 silencing in the A375 cells. Cell growth was inhibited by the EGFR inhibitor erlotinib and by CD147 silencing, and additive growth inhibition was observed when these techniques were combined. The results of the present study indicate that the combination of EGFR and CD147 inhibition may be useful in BRAF-mutated MM.
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Affiliation(s)
- Miho Hatanaka
- Department of Dermatology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima 890-8520, Japan
| | - Yuko Higashi
- Department of Dermatology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima 890-8520, Japan
| | - Kazuhiro Kawai
- Department of Dermatology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima 890-8520, Japan
| | - Juan Su
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Weiqi Zeng
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Xiang Chen
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Takuro Kanekura
- Department of Dermatology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima 890-8520, Japan
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Maryu G, Matsuda M, Aoki K. Multiplexed Fluorescence Imaging of ERK and Akt Activities and Cell-cycle Progression. Cell Struct Funct 2016; 41:81-92. [DOI: 10.1247/csf.16007] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Affiliation(s)
- Gembu Maryu
- Laboratory of Bioimaging and Cell Signaling, Graduate School of Biostudies, Kyoto University
| | - Michiyuki Matsuda
- Laboratory of Bioimaging and Cell Signaling, Graduate School of Biostudies, Kyoto University
- Department of Pathology and Biology of Diseases, Graduate School of Medicine, Kyoto University
| | - Kazuhiro Aoki
- Imaging Platform for Spatio-Temporal Information, Graduate School of Medicine, Kyoto University
- Division of Quantitative Biology, Okazaki Institute for Integrative Bioscience, National Institute for Basic Biology, National Institutes of Natural Sciences
- Department of Basic Biology, Faculty of Life Science, SOKENDAI (Graduate University for Advanced Studies)
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Iwamoto E, Ueta N, Matsui Y, Kamijo K, Kuga T, Saito Y, Yamaguchi N, Nakayama Y. ERK Plays a Role in Chromosome Alignment and Participates in M-Phase Progression. J Cell Biochem 2015; 117:1340-51. [PMID: 26529125 DOI: 10.1002/jcb.25424] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Accepted: 11/02/2015] [Indexed: 11/07/2022]
Abstract
Cell division, a prerequisite for cell proliferation, is a process in which each daughter cell inherits one complete set of chromosomes. The mitotic spindle is a dedicated apparatus for the alignment and segregation of chromosomes. Extracellular signal-regulated kinase (ERK) 1/2 plays crucial roles in cell cycle progression, particularly during M-phase. Although, association with the mitotic spindle has been reported, the precise roles played by ERK in the dynamics of the mitotic spindle and in M-phase progression remain to be elucidated. In this study, we used MEK inhibitors U0126 and GSK1120212 to dissect the roles of ERK in M-phase progression and chromosome alignment. Fluorescence microscopy revealed that ERK is localized to the spindle microtubules in a manner independent of Src kinase, which is one of the kinases upstream of ERK at mitotic entry. ERK inhibition induces an increase in the number of prophase cells and a decrease in the number of anaphase cells. Time-lapse imaging revealed that ERK inhibition perturbs chromosome alignment, thereby preventing cells from entering anaphase. These results suggest that ERK plays a role in M-phase progression by regulating chromosome alignment and demonstrate one of the mechanisms by which the aberration of ERK signaling may produce cancer cells.
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Affiliation(s)
- Erika Iwamoto
- Department of Biochemistry and Molecular Biology, Kyoto Pharmaceutical University, Kyoto, 607-8414, Japan
| | - Natsumi Ueta
- Department of Biochemistry and Molecular Biology, Kyoto Pharmaceutical University, Kyoto, 607-8414, Japan
| | - Yuki Matsui
- Department of Molecular Cell Biology, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, 260-8675, Japan
| | - Keiju Kamijo
- Department of Anatomy, Anthropology and Cell Biology, Graduate School of Medicine, Tohoku University, Sendai, Miyagi, 980-8575, Japan
| | - Takahisa Kuga
- Department of Biochemistry and Molecular Biology, Kyoto Pharmaceutical University, Kyoto, 607-8414, Japan
| | - Youhei Saito
- Department of Biochemistry and Molecular Biology, Kyoto Pharmaceutical University, Kyoto, 607-8414, Japan
| | - Naoto Yamaguchi
- Department of Molecular Cell Biology, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, 260-8675, Japan
| | - Yuji Nakayama
- Department of Biochemistry and Molecular Biology, Kyoto Pharmaceutical University, Kyoto, 607-8414, Japan
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Tsuchiya Y, Murai S, Yamashita S. Dual inhibition of Cdc2 protein kinase activation during apoptosis inXenopusegg extracts. FEBS J 2015; 282:1256-70. [DOI: 10.1111/febs.13217] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Revised: 01/12/2015] [Accepted: 01/26/2015] [Indexed: 11/27/2022]
Affiliation(s)
- Yuichi Tsuchiya
- Department of Biochemistry; Toho University School of Medicine; Ota-ku Tokyo Japan
| | - Shin Murai
- Department of Biochemistry; Toho University School of Medicine; Ota-ku Tokyo Japan
| | - Shigeru Yamashita
- Department of Biochemistry; Toho University School of Medicine; Ota-ku Tokyo Japan
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Marchesi S, Montani F, Deflorian G, D'Antuono R, Cuomo A, Bologna S, Mazzoccoli C, Bonaldi T, Di Fiore PP, Nicassio F. DEPDC1B coordinates de-adhesion events and cell-cycle progression at mitosis. Dev Cell 2014; 31:420-33. [PMID: 25458010 PMCID: PMC4250264 DOI: 10.1016/j.devcel.2014.09.009] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 08/05/2014] [Accepted: 09/15/2014] [Indexed: 11/25/2022]
Abstract
Cells entering mitosis become rounded, lose attachment to the substrate, and increase their cortical rigidity. Pivotal to these events is the dismantling of focal adhesions (FAs). How mitotic reshaping is linked to commitment to divide is unclear. Here, we show that DEPDC1B, a protein that accumulates in G2, coordinates de-adhesion events and cell-cycle progression at mitosis. DEPDC1B functions as an inhibitor of a RhoA-based signaling complex, which assembles on the FA-associated protein tyrosine phosphatase, receptor type, F (PTPRF) and mediates the integrity of FAs. By competing with RhoA for the interaction with PTPRF, DEPDC1B promotes the dismantling of FAs, which is necessary for the morphological changes preceding mitosis. The circuitry is relevant in whole organisms, as shown by the control exerted by the DEPDC1B/RhoA/PTPRF axis on mitotic dynamics during zebrafish development. Our results uncover an adhesion-dependent signaling mechanism that coordinates adhesion events with the control of cell-cycle progression. DEPDC1B is a cell-cycle gene involved in the transition from G2 phase to mitosis Persistent adhesion at G2 phase delays CycB/CDK1 activation and G2/M transition DEPDC1B controls RhoA/ROCK-dependent adhesion dynamics at G2 phase DEPDC1B inhibits RhoA activation by displacing it from the PTPRF/GEF-H1 complex
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Affiliation(s)
- Stefano Marchesi
- Istituto Europeo di Oncologia (IEO), 20141 Milan, Italy; Fondazione IFOM-Istituto FIRC di Oncologia Molecolare, 20139 Milan, Italy; Center for Genomic Science of IIT@SEMM, Istituto Italiano di Tecnologia (IIT), 20139 Milan, Italy
| | | | - Gianluca Deflorian
- Fondazione IFOM-Istituto FIRC di Oncologia Molecolare, 20139 Milan, Italy
| | - Rocco D'Antuono
- Fondazione IFOM-Istituto FIRC di Oncologia Molecolare, 20139 Milan, Italy
| | | | - Serena Bologna
- Fondazione IFOM-Istituto FIRC di Oncologia Molecolare, 20139 Milan, Italy
| | - Carmela Mazzoccoli
- Laboratory of Preclinical and Translational Research, IRCCS, Centro di Riferimento Oncologico della Basilicata, 85028 Rionero in Vulture (PZ), Italy
| | | | - Pier Paolo Di Fiore
- Istituto Europeo di Oncologia (IEO), 20141 Milan, Italy; Fondazione IFOM-Istituto FIRC di Oncologia Molecolare, 20139 Milan, Italy; Dipartimento di Scienze della Salute, Università degli Studi di Milano, 20142 Milan, Italy.
| | - Francesco Nicassio
- Istituto Europeo di Oncologia (IEO), 20141 Milan, Italy; Fondazione IFOM-Istituto FIRC di Oncologia Molecolare, 20139 Milan, Italy; Center for Genomic Science of IIT@SEMM, Istituto Italiano di Tecnologia (IIT), 20139 Milan, Italy.
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40
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McGinnis LK, Pelech S, Kinsey WH. Post-ovulatory aging of oocytes disrupts kinase signaling pathways and lysosome biogenesis. Mol Reprod Dev 2014; 81:928-45. [PMID: 25242074 DOI: 10.1002/mrd.22413] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Accepted: 08/07/2014] [Indexed: 12/21/2022]
Abstract
Post-ovulatory aging of oocytes results in the progressive loss of fertilization and developmental competence. This degradation of oocyte quality has been the object of numerous investigations, primarily focused on individual signaling pathways which provide limited insight into the status of global signaling events. The purpose of the present investigation was to comprehensively assess broad patterns of signaling pathway activity during in vitro aging as an initial step in defining control points that can be targeted to prevent the reduction in oocyte quality during prolonged culture. An antibody microarray-based phospho-proteome analysis performed on oocytes before and after eight hours of culture revealed significant changes in the abundance or activation state of 43 proteins that function in a wide variety of protein kinase-mediated signaling pathways. Several of the most significantly affected kinases were studied by Western blot and confocal immunofluorescence to corroborate the array results. Prolonged culture resulted in global changes in the abundance and activity of protein kinases that regulate the response to calcium, stress, and cell-cycle control. Examination of intracellular structures revealed a previously unrecognized increase in the abundance of large autophogagic lysosomes, which correlates with changes in protein kinase pathways. These results provide insight into the stresses experienced by oocytes during culture and the diversity of responses that results from them. The observed increase in autophagy-related activity, together with the disruptions in calcium signaling, cell-cycle, and stress-response pathways, have the potential to negatively impact oocyte quality by interfering with the normal sequence of biochemical changes that constitute egg activation following fertilization.
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Affiliation(s)
- Lynda K McGinnis
- Department Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, Kansas; Department of Anatomy and Cell Biology, University of Kansas Medical Center, Kansas City, Kansas
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PEA15 regulates the DNA damage-induced cell cycle checkpoint and oncogene-directed transformation. Mol Cell Biol 2014; 34:2264-82. [PMID: 24710276 DOI: 10.1128/mcb.01542-13] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Regulation of the DNA damage response and cell cycle progression is critical for maintaining genome integrity. Here, we report that in response to DNA damage, COPS5 deubiquitinates and stabilizes PEA15 in an ATM kinase-dependent manner. PEA15 expression oscillates throughout the cell cycle, and the loss of PEA15 accelerates cell cycle progression by activating CDK6 expression via the c-JUN transcription factor. Cells lacking PEA15 exhibit a DNA damage-induced G2/M checkpoint defect due to increased CDC25C activity and, consequentially, higher cyclin-dependent kinase 1 (CDK1)/cyclin B activity, and accordingly they have an increased rate of spontaneous mutagenesis. We find that oncogenic RAS inhibits PEA15 expression and that ectopic PEA15 expression blocks RAS-mediated transformation, which can be partially rescued by ectopic expression of CDK6. Finally, we show that PEA15 expression is downregulated in colon, breast, and lung cancer samples. Collectively, our results demonstrate that tumor suppressor PEA15 is a regulator of genome integrity and is an integral component of the DNA damage response pathway that regulates cell cycle progression, the DNA-damage-induced G2/M checkpoint, and cellular transformation.
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Zhang Y, Guo Z, Xu L. Tributyltin induces a G2/M cell cycle arrest in human amniotic cells via PP2A inhibition-mediated inactivation of the ERK1/2 cascades. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2014; 37:812-818. [PMID: 24632106 DOI: 10.1016/j.etap.2014.02.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Revised: 01/28/2014] [Accepted: 02/10/2014] [Indexed: 06/03/2023]
Abstract
The molecular mechanisms underlying the cell cycle alterations induced by tributyltin (TBT), a highly toxic environmental contaminant, remain elusive. In this study, cell cycle progression and some key regulators in G2/M phase were investigated in human amniotic cells treated with TBT. Furthermore, protein phosphatase (PP) 2A and the ERK cascades were examined. The results showed that TBT caused a G2/M cell cycle arrest that was accompanied by a decrease in the total cdc25C protein level and an increase in the p-cdc2 level in the nucleus. TBT caused a decrease in PP2A activity and inhibited the ERK cascade by inactivating Raf-1, resulting in the dephosphorylation of MEK1/2, ERK1/2, and c-Myc. Taken together, TBT leads to a G2/M cell cycle arrest in FL cells, an increase in p-cdc2 and a decrease in the levels of total cdc25C protein, which may be caused by the PP2A inhibition-mediated inactivation of the ERK1/2 cascades.
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Affiliation(s)
- Yali Zhang
- Department of Biochemistry, School of Medicine, Nantong University, 19 Qi Xiu Rode, 226001 Nantong, China; Department of Biochemistry and Genetics, School of Medicine, Zhejiang University, 388 Yu Hang Tang Road, 310058 Hangzhou, China.
| | - Zonglou Guo
- Department of Biosystem Engineering, College of Biosystem Engineering and Food Science, Zhejiang University, 388 Yu Hang Tang Road, 310058 Hangzhou, China.
| | - Lihong Xu
- Department of Biochemistry and Genetics, School of Medicine, Zhejiang University, 388 Yu Hang Tang Road, 310058 Hangzhou, China.
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43
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Optimization of ERK activity biosensors for both ratiometric and lifetime FRET measurements. SENSORS 2014; 14:1140-54. [PMID: 24434874 PMCID: PMC3926607 DOI: 10.3390/s140101140] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Revised: 12/06/2013] [Accepted: 12/19/2013] [Indexed: 11/16/2022]
Abstract
Among biosensors, genetically-encoded FRET-based biosensors are widely used to localize and measure enzymatic activities. Kinases activities are of particular interest as their spatiotemporal regulation has become crucial for the deep understanding of cell fate decisions. This is especially the case for ERK, whose activity is a key node in signal transduction pathways and can direct the cell into various processes. There is a constant need for better tools to analyze kinases in vivo, and to detect even the slightest variations of their activities. Here we report the optimization of the previous ERK activity reporters, EKAR and EKAREV. Those tools are constituted by two fluorophores adapted for FRET experiments, which are flanking a specific substrate of ERK, and a domain able to recognize and bind this substrate when phosphorylated. The latter phosphorylation allows a conformational change of the biosensor and thus a FRET signal. We improved those biosensors with modifications of: (i) fluorophores and (ii) linkers between substrate and binding domain, resulting in new versions that exhibit broader dynamic ranges upon EGF stimulation when FRET experiments are carried out by fluorescence lifetime and ratiometric measurements. Herein, we characterize those new biosensors and discuss their observed differences that depend on their fluorescence properties.
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Abstract
The Ras-Raf-MEK-ERK signaling cascade is capable of channeling a wide variety of extracellular signals into control of cell proliferation, differentiation, senescence, and death. Because aberrant regulation at all steps of this signaling axis is observed in cancer, it remains an area of great interest in the field of tumor biology. Here we present evidence of the intricate and delicate levels of control of this pathway as it pertains to cell cycle regulation and illustrate how this control is not simply a rheostat.
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Affiliation(s)
- Paul M Campbell
- Department of Pharmacology and Physiology, Drexel University College of Medicine, 245 N. 15th Street, MS 488, Philadelphia, PA, 19102, USA,
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45
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14-3-3 proteins in cancer. Mol Oncol 2013. [DOI: 10.1017/cbo9781139046947.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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46
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Reinhardt HC, Yaffe MB. Phospho-Ser/Thr-binding domains: navigating the cell cycle and DNA damage response. Nat Rev Mol Cell Biol 2013; 14:563-80. [PMID: 23969844 DOI: 10.1038/nrm3640] [Citation(s) in RCA: 202] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Coordinated progression through the cell cycle is a complex challenge for eukaryotic cells. Following genotoxic stress, diverse molecular signals must be integrated to establish checkpoints specific for each cell cycle stage, allowing time for various types of DNA repair. Phospho-Ser/Thr-binding domains have emerged as crucial regulators of cell cycle progression and DNA damage signalling. Such domains include 14-3-3 proteins, WW domains, Polo-box domains (in PLK1), WD40 repeats (including those in the E3 ligase SCF(βTrCP)), BRCT domains (including those in BRCA1) and FHA domains (such as in CHK2 and MDC1). Progress has been made in our understanding of the motif (or motifs) that these phospho-Ser/Thr-binding domains connect with on their targets and how these interactions influence the cell cycle and DNA damage response.
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Affiliation(s)
- H Christian Reinhardt
- David H. Koch Institute for Integrative Cancer Research, Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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The HDAC inhibitor LBH589 induces ERK-dependent prometaphase arrest in prostate cancer via HDAC6 inactivation and down-regulation. PLoS One 2013; 8:e73401. [PMID: 24023871 PMCID: PMC3762759 DOI: 10.1371/journal.pone.0073401] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2013] [Accepted: 07/19/2013] [Indexed: 01/03/2023] Open
Abstract
Histone deacetylase inhibitors (HDACIs) have potent anti-cancer activity in a variety of cancer models. Understanding the molecular mechanisms involved in the therapeutic responsiveness of HDACI is needed before its clinical application. This study aimed to determine if a potent HDACI, LBH589 (Panobinostat), had differential therapeutic responsiveness towards LNCaP and PC-3 prostate cancer (PCa) cells. The former showed prometaphase arrest with subsequent apoptosis upon LBH589 treatment, while the latter was less sensitive and had late G2 arrest. The LBH589 treatment down-regulated HDAC6 and sustained ERK activation, and contributed to prometaphase arrest. Mechanistically, LBH589 inhibited HDAC6 activity, caused its dissociation from protein phosphatase PP1α, and increased 14-3-3ζ acetylation. Acetylated 14-3-3ζ released its mask effect on serine 259 of c-Raf and serine 216 of Cdc25C subsequent to de-phosphorylation by PP1α, which contributed to ERK activation. Enhanced ERK activity by LBH589 further down-regulated HDAC6 protein levels and sustained ERK activation by free-forward regulation. The sustained Cdc25C and ERK activation resulted in early M-phase (prometaphase) arrest and subsequent apoptosis in the most sensitive LNCaP cells but not in PC-3 cells. This study provides pre-clinical evidence that HDAC6 may serve as a sensitive therapeutic target in the treatment of prostate cancer with HDACI LBH589 for clinical translation. This study also posits a novel mechanism of HDAC6 participation in regulating the c-Raf-PP1-ERK signaling pathway and contributing to M phase cell-cycle transition.
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Herrera-Abreu MT, Pearson A, Campbell J, Shnyder SD, Knowles MA, Ashworth A, Turner NC. Parallel RNA interference screens identify EGFR activation as an escape mechanism in FGFR3-mutant cancer. Cancer Discov 2013; 3:1058-71. [PMID: 23744832 PMCID: PMC3770512 DOI: 10.1158/2159-8290.cd-12-0569] [Citation(s) in RCA: 102] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
UNLABELLED Activation of fibroblast growth factor receptors (FGFR) is a common oncogenic event. Little is known about the determinants of sensitivity to FGFR inhibition and how these may vary between different oncogenic FGFRs. Using parallel RNA interference (RNAi) genetic screens, we show that the EGF receptor (EGFR) limits sensitivity to FGFR inhibition in FGFR3-mutant and -translocated cell lines, but not in other FGFR-driven cell lines. We also identify two distinct mechanisms through which EGFR limits sensitivity. In partially FGFR3-dependent lines, inhibition of FGFR3 results in transient downregulation of mitogen-activated protein kinase signaling that is rescued by rapid upregulation of EGFR signaling. In cell lines that are intrinsically resistant to FGFR inhibition, EGFR dominates signaling via repression of FGFR3, with EGFR inhibition rescued by delayed upregulation of FGFR3 expression. Importantly, combinations of FGFR and EGFR inhibitors overcome these resistance mechanisms in vitro and in vivo. Our results illustrate the power of parallel RNAi screens in identifying common resistance mechanisms to targeted therapies. SIGNIFICANCE Our data identify a novel therapeutic approach to the treatment of FGFR3-mutant cancer, emphasizing the potential of combination approaches targeting both FGFR3 and EGFR. Our data extend the role of EGFR in mediating resistance to inhibitors targeting a mutant oncogene, showing that EGFR signaling can repress mutant FGFR3 to induce intrinsic resistance to FGFR targeting.
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Affiliation(s)
- Maria Teresa Herrera-Abreu
- 1The Breakthrough Breast Cancer Research Centre, The Institute of Cancer Research; 2Breast Unit, Royal Marsden Hospital, London; 3Institute of Cancer Therapeutics, University of Bradford, Bradford; and 4Section of Experimental Oncology, Leeds Institute of Molecular Medicine, St James's University Hospital, Leeds, United Kingdom
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Snoek BC, Wilt LHAMD, Jansen G, Peters GJ. Role of E3 ubiquitin ligases in lung cancer. World J Clin Oncol 2013; 4:58-69. [PMID: 23936758 PMCID: PMC3708064 DOI: 10.5306/wjco.v4.i3.58] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Revised: 01/10/2013] [Accepted: 06/06/2013] [Indexed: 02/06/2023] Open
Abstract
E3 ubiquitin ligases are a large family of proteins that catalyze the ubiquitination of many protein substrates for targeted degradation by the 26S proteasome. Therefore, E3 ubiquitin ligases play an essential role in a variety of biological processes including cell cycle regulation, proliferation and apoptosis. E3 ubiquitin ligases are often found overexpressed in human cancers, including lung cancer, and their deregulation has been shown to contribute to cancer development. However, the lack of specific inhibitors in clinical trials is a major issue in targeting E3 ubiquitin ligases with currently only one E3 ubiquitin ligase inhibitor being tested in the clinical setting. In this review, we focus on E3 ubiquitin ligases that have been found deregulated in lung cancer. Furthermore, we discuss the processes in which they are involved and evaluate them as potential anti-cancer targets. By better understanding the mechanisms by which E3 ubiquitin ligases regulate biological processes and their exact role in carcinogenesis, we can improve the development of specific E3 ubiquitin ligase inhibitors and pave the way for novel treatment strategies for cancer patients.
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50
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Purification and biochemical analysis of catalytically active human cdc25C dual specificity phosphatase. Biochimie 2013; 95:1450-61. [DOI: 10.1016/j.biochi.2013.03.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Accepted: 03/22/2013] [Indexed: 11/18/2022]
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