1
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Wang J, Xiang Y, Xie Z, Fan M, Fang S, Wan H, Zhao R, Zeng F, Hua Q. USP14 Positively Modulates Head and Neck Squamous Carcinoma Tumorigenesis and Potentiates Heat Shock Pathway through HSF1 Stabilization. Cancers (Basel) 2023; 15:4385. [PMID: 37686660 PMCID: PMC10486363 DOI: 10.3390/cancers15174385] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 08/21/2023] [Accepted: 08/25/2023] [Indexed: 09/10/2023] Open
Abstract
The ubiquitin-proteasome system is a pivotal intracellular proteolysis process in posttranslational modification. It regulates multiple cellular processes. Deubiquitinating enzymes (DUBs) are a stabilizer in proteins associated with tumor growth and metastasis. However, the link between DUBs and HNSCC remains incompletely understood. In this study, therefore, we identified USP14 as a tumor proliferation enhancer and a substantially hyperactive deubiquitinase in HNSCC samples, implying a poor prognosis prediction. Silencing USP14 in vitro conspicuously inhibited HNSCC cell proliferation and migration. Consistently, defective USP14 in vivo significantly diminished HNSCC tumor growth and lung metastasis compared to the control group. Luciferase assays indicated that HSF1 was downstream from USP14, and an evaluation of the cellular effects of HSF1 overexpression in USP14-dificient mice tumors showed that elevated HSF1 reversed HNSCC growth and metastasis predominantly through the HSF1-HSP pathway. Mechanistically, USP14 encouraged HSF1 expression by deubiquitinating and stabilizing HSF1, which subsequently orchestrated transcriptional activation in HSP60, HSP70, and HSP90, ultimately leading to HNSCC progression and metastasis. Collectively, we uncovered that hyperactive USP14 contributed to HNSCC tumor growth and lung metastasis by reinforcing HSF1-depedent HSP activation, and our findings provided the insight that targeting USP14 could be a promising prognostic and therapeutic strategy for HSNCC.
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Affiliation(s)
- Jie Wang
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, 238 Jie-Fang Road, Wuhan 430060, China; (J.W.)
| | - Yuandi Xiang
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, 238 Jie-Fang Road, Wuhan 430060, China; (J.W.)
| | - Zhanghong Xie
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, 238 Jie-Fang Road, Wuhan 430060, China; (J.W.)
| | - Mengqi Fan
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Shizhen Fang
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, 238 Jie-Fang Road, Wuhan 430060, China; (J.W.)
| | - Huanzhi Wan
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, 238 Jie-Fang Road, Wuhan 430060, China; (J.W.)
| | - Rui Zhao
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, 238 Jie-Fang Road, Wuhan 430060, China; (J.W.)
| | - Feng Zeng
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, 238 Jie-Fang Road, Wuhan 430060, China; (J.W.)
| | - Qingquan Hua
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, 238 Jie-Fang Road, Wuhan 430060, China; (J.W.)
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2
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Bunch H, Calderwood SK. Role of Heat Shock Factors in Stress-Induced Transcription: An Update. Methods Mol Biol 2023; 2693:25-38. [PMID: 37540424 DOI: 10.1007/978-1-0716-3342-7_3] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
Heat shock proteins (HSP) are rapidly induced after proteotoxic stresses such as heat shock and accumulate at high concentrations in cells. HSP induction involves primarily a family of heat shock transcription factors (HSF) that bind the heat shock elements of the HSP genes and mediate transcription in trans. We discuss methods for the study of HSP binding to HSP promoters and the consequent increases in HSP gene expression in vitro and in vivo.
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Affiliation(s)
- Heyoun Bunch
- Department of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - Stuart K Calderwood
- Molecular and Cellular Radiation Oncology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
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3
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Bai H, Ukita H, Kawahara M, Mitani T, Furukawa E, Yanagawa Y, Yabuuchi N, Kim H, Takahashi M. Effect of summer heat stress on gene expression in bovine uterine endometrial tissues. Anim Sci J 2020; 91:e13474. [PMID: 33159383 DOI: 10.1111/asj.13474] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 09/18/2020] [Accepted: 09/30/2020] [Indexed: 12/20/2022]
Abstract
Heat stress negatively affects reproductive functions in cows. Increased temperature disturbs fetal development in utero. However, the effect of heat stress on uterine endometrial tissues has not been fully examined. Using qPCR analysis, we measured the mRNA expression of various molecular markers in uterine endometrial tissue of dairy cows from Hokkaido, Japan, in winter and summer. Markers examined were heat shock proteins (HSPs), antioxidant enzymes (catalase, copper/zinc superoxide dismutase, manganese superoxide dismutase, and glutathione peroxidase 4), inflammatory cytokines, and interferon stimulated genes. Our results showed heat stress, body and milk temperatures were higher during summer than during winter. Expression levels of HSP27, HSP60, and HSP90 mRNA, and of catalase and copper/zinc superoxide dismutase mRNA were lower in summer than in winter. Tumor necrosis factor alpha expression was higher in summer than in winter. In conclusion, summer heat stress may reduce the expression of HSPs, affecting the levels of inflammatory cytokines in bovine uterine endometrial tissue.
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Affiliation(s)
- Hanako Bai
- Laboratory of Animal Breeding and Reproduction, Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
| | - Haruka Ukita
- Laboratory of Animal Breeding and Reproduction, Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
| | - Manabu Kawahara
- Laboratory of Animal Breeding and Reproduction, Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
| | - Tomohiro Mitani
- Field Science Center for Norther Biosphere, Hokkaido University, Sapporo, Japan
| | - Eri Furukawa
- Laboratory of Theriogenology, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Yojiro Yanagawa
- Laboratory of Theriogenology, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | | | | | - Masashi Takahashi
- Laboratory of Animal Breeding and Reproduction, Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
- Global Station for Food, Land and Water Resources, Global Institution for Collaborative Research and Education, Hokkaido University, Sapporo, Japan
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4
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Murshid A, Prince TL, Lang B, Calderwood SK. Role of Heat Shock Factors in Stress-Induced Transcription. Methods Mol Biol 2018; 1709:23-34. [PMID: 29177648 DOI: 10.1007/978-1-4939-7477-1_2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Heat shock proteins (HSP) are rapidly induced after stresses such as heat shock and accumulate at high concentrations in cells. HSP induction involves primarily a family of heat shock transcription factors (HSF) that bind the heat shock elements of the HSP genes and mediate transcription in trans. We discuss methods for the study of HSP binding to HSP promoters and the consequent increases in HSP gene expression in vitro and in vivo.
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Affiliation(s)
- Ayesha Murshid
- Molecular and Cellular Radiation Oncology, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue, Boston, MA, 02215, USA
| | - Thomas L Prince
- Department of Urology, Weis Center for Research, Geisinger Clinic, Danville, PA, 17822, USA
| | - Ben Lang
- Molecular and Cellular Radiation Oncology, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue, Boston, MA, 02215, USA
| | - Stuart K Calderwood
- Department of Radiation Oncology, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue, Boston, MA, 02215, USA.
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5
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Oyoshi T, Kurokawa R. Structure of noncoding RNA is a determinant of function of RNA binding proteins in transcriptional regulation. Cell Biosci 2012; 2:1. [PMID: 22214309 PMCID: PMC3274451 DOI: 10.1186/2045-3701-2-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2011] [Accepted: 01/03/2012] [Indexed: 11/10/2022] Open
Abstract
The majority of the noncoding regions of mammalian genomes have been found to be transcribed to generate noncoding RNAs (ncRNAs), resulting in intense interest in their biological roles. During the past decade, numerous ncRNAs and aptamers have been identified as regulators of transcription. 6S RNA, first described as a ncRNA in E. coli, mimics an open promoter structure, which has a large bulge with two hairpin/stalk structures that regulate transcription through interactions with RNA polymerase. B2 RNA, which has stem-loops and unstructured single-stranded regions, represses transcription of mRNA in response to various stresses, including heat shock in mouse cells. The interaction of TLS (translocated in liposarcoma) with CBP/p300 was induced by ncRNAs that bind to TLS, and this in turn results in inhibition of CBP/p300 histone acetyltransferase (HAT) activity in human cells. Transcription regulator EWS (Ewing's sarcoma), which is highly related to TLS, and TLS specifically bind to G-quadruplex structures in vitro. The carboxy terminus containing the Arg-Gly-Gly (RGG) repeat domains in these proteins are necessary for cis-repression of transcription activation and HAT activity by the N-terminal glutamine-rich domain. Especially, the RGG domain in the carboxy terminus of EWS is important for the G-quadruplex specific binding. Together, these data suggest that functions of EWS and TLS are modulated by specific structures of ncRNAs.
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Affiliation(s)
- Takanori Oyoshi
- Division of Gene Structure and Function Research Center for Genomic Medicine Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama-Ken, Japan, Mail code 350-1241.
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6
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Zhang Y, Chou SD, Murshid A, Prince TL, Schreiner S, Stevenson MA, Calderwood SK. The role of heat shock factors in stress-induced transcription. Methods Mol Biol 2011; 787:21-32. [PMID: 21898224 DOI: 10.1007/978-1-61779-295-3_2] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Heat shock proteins (HSPs) are rapidly induced after stresses, such as heat shock, and accumulate at high concentrations in cells. HSP induction involves a family of heat shock transcription factors that bind the heat shock elements of the HSP genes and mediate transcription in trans. We discuss methods for the study of HSP binding to HSP promoters and the consequent increases in HSP gene expression in vitro and in vivo.
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Affiliation(s)
- Yue Zhang
- Molecular and Cellular Radiation Oncology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
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7
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Hagan CR, Rudin CM. DNA cleavage and Trp53 differentially affect SINE transcription. Genes Chromosomes Cancer 2007; 46:248-60. [PMID: 17171681 PMCID: PMC3715058 DOI: 10.1002/gcc.20406] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Among the cellular responses observed following treatment with DNA-damaging agents is the activation of Short Interspersed Elements (SINEs; retrotransposable genetic elements that comprise over 10% of the human genome). By placing a human SINE (the Alu element) into murine cells, we have previously shown that DNA-damaging agents such as etoposide can induce both upregulation of SINE transcript levels and SINE retrotransposition. A similarly cytotoxic (but not genotoxic) exposure to vincristine was not associated with SINE activation. Here we demonstrate that multiple other genotoxic exposures are associated with upregulation of SINE transcript levels. By comparing the effects of similarly cytotoxic doses of the topoisomerase II inhibitors etoposide and merbarone, we confirm that DNA strand breakage is specifically associated with SINE induction. By evaluating transcription rate and RNA stability, we demonstrate that SINE induction by genotoxic exposure is associated with transcriptional induction and not with transcript stabilization. Finally we demonstrate that SINE induction by genotoxic stress is mediated by a Trp53-independent pathway, and in fact that Trp53 plays an inhibitory role in attenuating the transcriptional induction of SINE elements following exposure to a genotoxic agent. Together these data support a model in which initial DNA damage can trigger genomic instability due to SINE activation, a response which may be amplified in cancer cells lacking functional TP53.
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Affiliation(s)
- Christy R. Hagan
- Committee on Cancer Biology and Department of Medicine, University of Chicago, Chicago, IL
- The Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore, MD
| | - Charles M. Rudin
- The Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore, MD
- Correspondence to: Charles M. Rudin, M.D., Ph.D., Associate Professor of Oncology, The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Cancer Research Building II, Rm. 544, 1550 Orleans Street, Baltimore, MD 21231-1000.
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8
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Gjøvaag TF, Vikne H, Dahl HA. Effect of concentric or eccentric weight training on the expression of heat shock proteins in m. biceps brachii of very well trained males. Eur J Appl Physiol 2005; 96:355-62. [PMID: 16284787 DOI: 10.1007/s00421-005-0084-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/04/2005] [Indexed: 10/25/2022]
Abstract
Increased HSP expression in response to acute exercise is well documented in animal studies, and there is growing evidence that similar responses occur in man. In general, many human exercise studies have investigated the HSP response to low force continuous activity, while the knowledge about the HSP response to high force intermittent type of activity, like weight training, is so far sparse. In addition, most studies have used untrained subjects, and a common observation is that acute low force continuous activity in untrained individuals increases the HSP expression in these individuals. The main scope of this study was to investigate the HSP response in very well trained males subjected to longitudinal high intensity exercise, and if this response was dependent on exercise modality [i.e. eccentric (ECC) or concentric (CON) contractions]. Very well trained males performed progressive strength training consisting of either high force ECC or high force CON elbow flexions 2-3 times a week for 12 weeks. Compared with pre-exercise levels, HSP72 expression decreased by 46.1% (P<0.05) after CON contractions. GRP75 expression was unchanged after ECC or CON contractions, while ubiquitin expression decreased by 19.9% (P<0.02) after ECC contractions. These findings imply that chronic, intensive exercise may attenuate the HSP response in well-trained males.
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Affiliation(s)
- Terje F Gjøvaag
- Oslo University College, St Olavs Plass, PO Box 4, 0130, Oslo, Norway.
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9
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Espinoza CA, Allen TA, Hieb AR, Kugel JF, Goodrich JA. B2 RNA binds directly to RNA polymerase II to repress transcript synthesis. Nat Struct Mol Biol 2004; 11:822-9. [PMID: 15300239 DOI: 10.1038/nsmb812] [Citation(s) in RCA: 202] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2004] [Accepted: 06/22/2004] [Indexed: 11/09/2022]
Abstract
B2 RNA is a small noncoding RNA polymerase III transcript that represses mRNA transcription in response to heat shock in mouse cells. Here we define the mechanism by which B2 RNA inhibits RNA polymerase II (Pol II) transcription. Using a purified Pol II transcription system, we found that B2 RNA potently inhibits transcription by binding to core Pol II with high affinity and specificity. Through this interaction, B2 RNA assembles into preinitiation complexes at the promoter and blocks RNA synthesis. Once B2 RNA is removed from preinitiation complexes, transcriptional activity is restored. Our studies describe a previously unobserved mechanism of transcriptional repression by a small RNA and suggest that B2 RNA associates with Pol II at promoters in heat shocked cells to actively inhibit transcription.
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Affiliation(s)
- Celso A Espinoza
- Department of Chemistry and Biochemistry, University of Colorado at Boulder, 215 UCB, Boulder, Colorado 80309-0215, USA
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10
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Allen TA, Von Kaenel S, Goodrich JA, Kugel JF. The SINE-encoded mouse B2 RNA represses mRNA transcription in response to heat shock. Nat Struct Mol Biol 2004; 11:816-21. [PMID: 15300240 DOI: 10.1038/nsmb813] [Citation(s) in RCA: 222] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2004] [Accepted: 06/24/2004] [Indexed: 11/09/2022]
Abstract
Cells respond to changes in environmental conditions via orchestrated modifications in gene expression. For example, in response to heat shock, cells execute a program of gene-specific transcriptional activation and repression. Although the activation of genes upon heat shock has been widely studied, the mechanism of mRNA transcriptional repression upon heat shock is unexplained. Here we show that during the heat shock response in mouse cells, a small noncoding RNA polymerase III transcript, B2 RNA, associates with RNA polymerase II and represses transcription of specific mRNA genes. These studies define a unique transcriptional regulatory mechanism involving an RNA regulator and reveal how mRNA transcription is repressed upon heat shock. Moreover, we identify a function for B2 RNA, which is transcribed from short interspersed elements that are abundant in the mouse genome and historically considered to be 'junk DNA.'
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Affiliation(s)
- Tiffany A Allen
- Department of Chemistry and Biochemistry, University of Colorado at Boulder, 215 UCB Boulder, Colorado 80309-0215, USA
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11
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Voellmy R. Transcriptional Regulation of the Metazoan Stress Protein Response. PROGRESS IN NUCLEIC ACID RESEARCH AND MOLECULAR BIOLOGY 2004; 78:143-85. [PMID: 15210330 DOI: 10.1016/s0079-6603(04)78004-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
This review provides an updated account of the regulation of the metazoan stress protein response. Where indicated, observations made with yeasts are also included. However, a discussion of the plant stress protein response is intentionally omitted (for a review, see 1). The stress protein response, as discussed hereafter, is understood to relate to the response by virtually all cells to heat and other stressors that results in the induced expression of so-called heat shock or stress genes. The protein products of these genes localize largely to the cytoplasm, nucleus, or organelles. An analogous response controls the expression of related genes, whose products reside in the endoplasmic reticulum. The response, termed ER stress response or unfolded protein response, is mediated by a separate regulation system that is not discussed in this review. Note, however, that recent work suggests the existence of commonalities between the regulatory systems controlling the stress protein and ER stress responses (2).
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Affiliation(s)
- Richard Voellmy
- Department of Biochemistry and Molecular Biology, University of Miami, Miami, FL 33136, USA
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12
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Zhao M, Tang D, Lechpammer S, Hoffman A, Asea A, Stevenson MA, Calderwood SK. Double-stranded RNA-dependent protein kinase (pkr) is essential for thermotolerance, accumulation of HSP70, and stabilization of ARE-containing HSP70 mRNA during stress. J Biol Chem 2002; 277:44539-47. [PMID: 12207033 DOI: 10.1074/jbc.m208408200] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
We have investigated the role of the double-stranded RNA-dependent protein kinase gene (pkr) in the regulation of the heat shock response. We show that the pkr gene is essential for efficient activation of the heat shock response and that pkr disruption profoundly inhibits heat shock protein 70 (HSP70) synthesis and blocks the development of thermotolerance. Despite these profound effects, pkr disruption did not markedly affect the activation of heat shock factor 1 by heat and did not reduce the rate of transcription of the HSP70 gene after heat shock. However, despite the lack of effect of pkr disruption on HSP70 gene transcription, we found a significant decrease in the expression of HSP70 mRNA in pkr-/- cells after heat shock. Kinetic studies of mRNA turnover suggested a block in the thermal stabilization of HSP70 mRNA in pkr-/- cells. As the thermal stabilization of HSP70 mRNA is thought to involve cis-acting A+U rich (ARE) elements in the 3'-untranslated region (UTR), we examined a potential role for pkr in this process. We found that a reporter beta-galactosidase mRNA destabilized by introduction of a functional ARE into the 3'-UTR became stabilized by heat but only in cells containing an intact pkr gene. Our studies suggest therefore that pkr plays a significant role in the stabilization of mRNA species containing ARE destruction sequences in the 3'-UTR and through this mechanism, contributes to the regulation of the heat shock response and other processes.
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Affiliation(s)
- Meijuan Zhao
- Department of Radiation Oncology, Dana Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02115, USA
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13
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Xie Y, Chen C, Stevenson MA, Hume DA, Auron PE, Calderwood SK. NF-IL6 and HSF1 have mutually antagonistic effects on transcription in monocytic cells. Biochem Biophys Res Commun 2002; 291:1071-80. [PMID: 11866474 DOI: 10.1006/bbrc.2002.6562] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We have examined the functional antagonism between the regulator of the heat shock response, HSF1, and NF-IL6, which plays a major role in control of the acute phase response (APR). Agents that activate HSF1 such as heat shock and sodium salicylate inhibit NF-IL6 induced transcription while NF-IL6 activators such as lipopolysaccharide (LPS) and interleukin 6 (IL-6) repressed the stress responsive HSP70B promoter. In transfection studies, the inhibitory effects of HSF1 and NF-IL6 on the c-fms promoter were shown to be highly dose-dependent. Furthermore, heat shock is inhibitory to differentiation-linked expression of macrophage colony stimulating factor (M-CSF) receptor, product of the c-fms gene, which is transcriptionally activated by NF-IL6 but repressed by HSF1. Our studies suggest a strong mutual antagonism between the heat shock response and APR, which may influence the sensitivity and duration of inflammatory responses.
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Affiliation(s)
- Yue Xie
- Department of Radiation Oncology, Dana Farber Cancer Institute, Harvard Medical School, 44 Binney Street, Boston, Massachusetts 02115, USA
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14
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Housby JN, Cahill CM, Chu B, Prevelige R, Bickford K, Stevenson MA, Calderwood SK. Non-steroidal anti-inflammatory drugs inhibit the expression of cytokines and induce HSP70 in human monocytes. Cytokine 1999; 11:347-58. [PMID: 10328874 DOI: 10.1006/cyto.1998.0437] [Citation(s) in RCA: 101] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Recent studies have shown that the non-steroidal anti-inflammatory drugs (NSAIDs) activate heat shock transcription factor (HSF1) from a latent cytoplasmic form to a nuclear, DNA binding state. As HSF1 can function as both an activator of heat shock genes and a repressor of non-heat shock genes such as IL1B and c- fos, we have examined the potential role of HSF1 in the effects of NSAIDs on gene expression in a human monocytic cell line THP-1. We found that two members of the NSAIDs, sodium salicylate and sulindac repress the IL1B promoter to similar degree to heat shock or HSF1 overexpression. In addition, sodium salicylate and additional NSAIDs used at concentrations that activate HSF1 also inhibited the expression of other monocytic genes (TNF-alpha, IL-1beta, IL-6, IL-8, IL-10, ICAM-1) activated by exposure to a pro-inflammatory stimulus (lipopolysaccharide, LPS). At least in the case of the IL1B promoter, repression did not seem to involve another factor whose activity is affected by the NSAIDs, NFkappaB as the IL1B promoter fragment used in our studies is not NFkappaB responsive and binds specifically to HSF1. Exposure to NSAIDs had a complex effect on HSP gene expression and while sulindac activated the stress responsive HSP70B promoter, sodium salicylate did not. In addition, only a subset of the NSAIDs induced HSP70 mRNA species. These findings reflect the properties of HSF1 which can be activated to at least two DNA binding forms only one of which activates heat shock promoters and suggest that individual NSAID family members may differentially induce one or other of these forms. Overall therefore, exposure to NSAIDs leads to a profound switch in gene expression in monocytic cells, with suppression of genes involved in macrophage activation and induction of stress genes and HSF1 appears to play a regulatory role in these effects.
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Affiliation(s)
- J N Housby
- Dana Farber Cancer Institute and Joint Center for Radiation Therapy, Jimmy Fund Laboratories 205, Harvard Medical School, 44 Binney Street, Boston, MA 02115, USA
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15
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16
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Xie Y, Cahill CM, Asea A, Auron PE, Calderwood SK. Heat shock proteins and regulation of cytokine expression. Infect Dis Obstet Gynecol 1999; 7:26-30. [PMID: 10231005 PMCID: PMC1784720 DOI: 10.1155/s106474499900006x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Affiliation(s)
- Y Xie
- Department of Adult Oncology, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, USA
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17
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Hansen RK, Oesterreich S, Lemieux P, Sarge KD, Fuqua SA. Quercetin inhibits heat shock protein induction but not heat shock factor DNA-binding in human breast carcinoma cells. Biochem Biophys Res Commun 1997; 239:851-6. [PMID: 9367858 DOI: 10.1006/bbrc.1997.7572] [Citation(s) in RCA: 73] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The flavonoid quercetin inhibits the heat-induced synthesis of heat shock proteins (hsps) in a variety of cell lines. To determine whether quercetin could inhibit hsp expression in breast cancer cells, we used the human breast cancer cell line, MDA-MB-231. Treatment of these cells with quercetin decreased the heat-induced synthesis of hsp27 and hsp70. However, inhibition of hsp expression did not correspond with the reduced ability of heat shock transcription factors (HSFs) to bind DNA. Furthermore, while quercetin treatment inhibited HSF2 expression, it only slightly affected HSF1 expression in breast cancer cells. In contrast, quercetin inhibited both HSF DNA-binding activity and HSF expression in HeLa cells. Our studies suggest that quercetin's action is cell-type specific, and in breast cancer cells may involve regulation of HSF transcriptional activity, rather than regulation of its DNA-binding activity.
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Affiliation(s)
- R K Hansen
- Department of Medicine/Division of Oncology, University of Texas Health Science Center, San Antonio 78284-7884, USA
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18
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Transfection of human HSP27 in rodent cells: Absence of compensatory regulation between small heat shock proteins. J Therm Biol 1996. [DOI: 10.1016/s0306-4565(96)00022-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Liu WM, Chu WM, Choudary PV, Schmid CW. Cell stress and translational inhibitors transiently increase the abundance of mammalian SINE transcripts. Nucleic Acids Res 1995; 23:1758-65. [PMID: 7784180 PMCID: PMC306933 DOI: 10.1093/nar/23.10.1758] [Citation(s) in RCA: 220] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
The abundance of Alu RNA is transiently increased by heat shock in human cell lines. This effect is specific to Alu repeats among Pol III transcribed genes, since the abundance of 7SL, 7SK, 5S and U6 RNAs is essentially unaffected by heat shock. The rapid induction of Alu expression precedes the heat shock induction of mRNAs for the ubiquitin and HSP 70 heat shock genes. Heat shock mimetics also transiently induce Alu expression indicating that increased Alu expression is a general cell-stress response. Cycloheximide treatment rapidly and transiently increases the abundance of Alu RNA. Again, compared with other genes transcribed by Pol III, this increase is specific to Alu. However, as distinguished from the cell stress response, cycloheximide does not induce expression of HSP 70 and ubiquitin mRNAs. Puromycin also increases Alu expression, suggesting that this response is generally caused by translational inhibition. The response of mammalian SINEs to cell stress and translational inhibition is not limited to SINEs which are Alu homologues. Heat shock and cycloheximide each transiently induce Pol III directed expression of B1 and B2 RNAs in mouse cells and C-element RNA in rabbit cells. Together, these three species exemplify the known SINE composition of placental mammals, suggesting that mammalian SINEs are similarly regulated and may serve a common function.
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Affiliation(s)
- W M Liu
- Section of Molecular and Cellular Biology, University of California, Davis 95616, USA
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20
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Interaction between heat shock factor and hsp70 is insufficient to suppress induction of DNA-binding activity in vivo. Mol Cell Biol 1994. [PMID: 7935376 DOI: 10.1128/mcb.14.10.6552] [Citation(s) in RCA: 84] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The intracellular level of free heat shock proteins, in particular the 70-kDa stress protein family, has been suggested to be the basis of an autoregulatory mechanism by which the cell measures the level of thermal stress and regulates the synthesis of heat shock proteins. It has been proposed that the DNA-binding and oligomeric state of the heat shock transcription factor (HSF) is a principal step in the induction pathway that is responsive to the level of 70-kDa stress protein. To test this hypothesis, we investigated the association between HSF and 70-kDa stress protein by means of a coimmunoprecipitation assay. We found that 70-kDa stress proteins associate to similar extents with both latent and active forms of HSF, although unlike other 70-kDa stress protein substrates, the association with HSF was not significantly disrupted in the presence of ATP. Gel mobility shift assays indicated that active HSF trimers purified from a bacterial expression system could not be substantially deactivated in vitro with purified 70-kDa stress protein and ATP. In addition, elevated concentrations of hsp70 alone could not significantly inhibit induction of the DNA-binding activity of endogenous HSF in cultured rat cells, and the induction was also not inhibited in cultured rat cells or Drosophila cells containing elevated levels of all members of the heat shock protein family. However, the deactivation of HSF to the non-DNA-binding state after prolonged heat stress or during recovery could be accelerated by increased levels of heat shock proteins. Hence, the level of heat shock proteins may affect the rate of disassembly of HSF trimers, but another mechanism, as yet undefined, appears to control the onset of the oligomeric transitions.
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Rabindran SK, Wisniewski J, Li L, Li GC, Wu C. Interaction between heat shock factor and hsp70 is insufficient to suppress induction of DNA-binding activity in vivo. Mol Cell Biol 1994; 14:6552-60. [PMID: 7935376 PMCID: PMC359185 DOI: 10.1128/mcb.14.10.6552-6560.1994] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
The intracellular level of free heat shock proteins, in particular the 70-kDa stress protein family, has been suggested to be the basis of an autoregulatory mechanism by which the cell measures the level of thermal stress and regulates the synthesis of heat shock proteins. It has been proposed that the DNA-binding and oligomeric state of the heat shock transcription factor (HSF) is a principal step in the induction pathway that is responsive to the level of 70-kDa stress protein. To test this hypothesis, we investigated the association between HSF and 70-kDa stress protein by means of a coimmunoprecipitation assay. We found that 70-kDa stress proteins associate to similar extents with both latent and active forms of HSF, although unlike other 70-kDa stress protein substrates, the association with HSF was not significantly disrupted in the presence of ATP. Gel mobility shift assays indicated that active HSF trimers purified from a bacterial expression system could not be substantially deactivated in vitro with purified 70-kDa stress protein and ATP. In addition, elevated concentrations of hsp70 alone could not significantly inhibit induction of the DNA-binding activity of endogenous HSF in cultured rat cells, and the induction was also not inhibited in cultured rat cells or Drosophila cells containing elevated levels of all members of the heat shock protein family. However, the deactivation of HSF to the non-DNA-binding state after prolonged heat stress or during recovery could be accelerated by increased levels of heat shock proteins. Hence, the level of heat shock proteins may affect the rate of disassembly of HSF trimers, but another mechanism, as yet undefined, appears to control the onset of the oligomeric transitions.
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Affiliation(s)
- S K Rabindran
- Laboratory of Biochemistry, National Cancer Institute, Bethesda, Maryland 20892
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22
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Lee YJ, Erdos G, Hou Z, Cho JM. Cycloheximide decreases nascent polypeptides level and affects up-regulation of HSP70 gene expression. J Therm Biol 1994. [DOI: 10.1016/0306-4565(94)90069-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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23
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Lee YJ, Hou ZZ, Curetty L, Erdos G, Stromberg JS, Carper SW, Cho JM, Corry PM. Regulation of HSP70 and HSP28 gene expression: absence of compensatory interactions. Mol Cell Biochem 1994; 137:155-67. [PMID: 7845389 DOI: 10.1007/bf00944077] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
We have previously reported the lack of HSP28 gene expression during acute and chronic thermotolerance development in L929 cells (J Cell Physiol 152: 118-125, 1992; Cancer Res 52: 5787, 1992). In contrast to HSP28, an extremely high level of inducible HSP70 synthesis was observed. These results led us to investigate the possibility of compensatory interactions between HSP70 and HSP28. To test the hypothesis, L929 cells were transfected with the human HSP28 gene contained in plasmid pCMV27. Data from Western blot and two-dimensional gel electrophoresis of [3H] leucine and [32P] orthophosphate-labeled proteins showed the synthesis and phosphorylation of HSP28 in transfected cells after heating at 45 degrees C for 10 min. However, the expression of constitutive and inducible HSP70 genes, along with the synthesis of their proteins, was not decreased after heat shock. These results suggest an independent regulation of HSP28 and HSP70 gene expression.
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Affiliation(s)
- Y J Lee
- Department of Radiation Oncology, William Beaumont Hospital, Royal Oak, MI 48073
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24
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Lee YJ, Erdos G, Hou ZZ, Kim SH, Kim JH, Cho JM, Corry PM. Mechanism of quercetin-induced suppression and delay of heat shock gene expression and thermotolerance development in HT-29 cells. Mol Cell Biochem 1994; 137:141-54. [PMID: 7845388 DOI: 10.1007/bf00944076] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Previous studies have shown that a combination of low pH and quercetin (QCT) treatment following heat shock markedly suppresses and delays the expression of heat shock protein genes, particularly the HSP70 gene (Lee et al., Biochem. Biophys. Res. Commun., 186:1121-1128, 1992). The possible mechanism for alteration of gene expression by treatment with QCT at low pH was investigated in human colon carcinoma cells. Cells were heated at 45 degrees C for 15 min and then incubated at 37 degrees C for various times (0-12 h) with QCT (0.05-0.2 mM) at pH 7.4 or 6.5. Gel mobility-shift analysis of whole cell extracts from heated cells showed the formation of the heat shock transcription factor (HSF)-heat shock element (HSE) complex. Dissociation of HSF from the HSE of the human HSP70 promotor occurred within 4 h under both pH conditions. The kinetics of recovery were not affected by treatment with 0.1% dimethyl sulfoxide (DMSO). However, the dissociation of HSF-HSE complex was markedly delayed during treatment with a combination of low pH and QCT. In addition, in vitro transcription assays showed a suppression of initiation and elongation of HSP70 mRNA. These results may explain why the combination of low pH and QCT treatment suppresses and delays the HSP70 gene expression as well as thermotolerance development.
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Affiliation(s)
- Y J Lee
- Department of Radiation Oncology, William Beaumont Hospital, Royal Oak, Michigan 48073
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25
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Manzerra P, Rush SJ, Brown IR. Temporal and spatial distribution of heat shock mRNA and protein (hsp70) in the rabbit cerebellum in response to hyperthermia. J Neurosci Res 1993; 36:480-90. [PMID: 8271318 DOI: 10.1002/jnr.490360414] [Citation(s) in RCA: 57] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
We have previously investigated the expression of hsp70 genes in the hyperthermic rabbit brain at the mRNA level by Northern blot and in situ hybridization procedures. Our studies have now been extended to the protein level utilizing Western blot and immunocytochemistry. Using an antibody which is specific to inducible hsp70, a prominent induction of hsp70 protein in glial cells of hyperthermic animals was noted. In particular, Bergmann glial cells in the cerebellum are strongly immunoreactive while adjacent Purkinje neurons are immunonegative. Extension of our in situ hybridization studies to a time course analysis revealed that the initial glial induction events were followed by a delayed accumulation of inducible hsp70 mRNA in Purkinje neurons at 10 hr post-heat shock. In control animals, high levels of constitutively expressed hsc70 mRNA and protein were observed in Purkinje neurons. Similar hsc70 and hsp70 mRNA observations were also made in neurons of the deep cerebellar nuclei and in motor neurons of the spinal cord. Our results suggest that these neuronal cell types accumulate hsp70 mRNA in response to hyperthermic treatment; however, the response is delayed when compared to the rapid response seen in glial cells. The high constitutive levels of hsc70 in certain neuronal cell types may play a role in the initial dampening of the hsp70 induction response in these cells.
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Affiliation(s)
- P Manzerra
- Department of Zoology, University of Toronto, Ontario, Canada
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26
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The DNA-binding activity of the human heat shock transcription factor is regulated in vivo by hsp70. Mol Cell Biol 1993. [PMID: 8355691 DOI: 10.1128/mcb.13.9.5427] [Citation(s) in RCA: 142] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The human heat shock transcription factor (HSF) is maintained in an inactive non-DNA-binding form under nonstress conditions and acquires the ability to bind specifically to the heat shock promoter element in response to elevated temperatures or other conditions that disrupt protein structure. Here we show that constitutive overexpression of the major inducible heat shock protein, hsp70, in transfected human cells reduces the extent of HSF activation after a heat stress. HSF activation was inhibited more strongly in clones that express higher levels of hsp70. These results demonstrate that HSF activity is negatively regulated in vivo by hsp70 and suggest that the cell might sense elevated temperature as a decreased availability of hsp70. HSF activation in response to treatment with sodium arsenite or the proline analog azetidine was also depressed in hsp70-expressing cells relative to that in the nontransfected control cells. As well, the level of activated HSF decreased more rapidly in the hsp70-expressing clones when the cells were heat shocked and returned to 37 degrees C. These results suggest that hsp70 could play an active role in the conversion of HSF back to a conformation that does not bind the heat shock promoter element during the attenuation of the heat shock response.
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27
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Mosser DD, Duchaine J, Massie B. The DNA-binding activity of the human heat shock transcription factor is regulated in vivo by hsp70. Mol Cell Biol 1993; 13:5427-38. [PMID: 8355691 PMCID: PMC360250 DOI: 10.1128/mcb.13.9.5427-5438.1993] [Citation(s) in RCA: 59] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
The human heat shock transcription factor (HSF) is maintained in an inactive non-DNA-binding form under nonstress conditions and acquires the ability to bind specifically to the heat shock promoter element in response to elevated temperatures or other conditions that disrupt protein structure. Here we show that constitutive overexpression of the major inducible heat shock protein, hsp70, in transfected human cells reduces the extent of HSF activation after a heat stress. HSF activation was inhibited more strongly in clones that express higher levels of hsp70. These results demonstrate that HSF activity is negatively regulated in vivo by hsp70 and suggest that the cell might sense elevated temperature as a decreased availability of hsp70. HSF activation in response to treatment with sodium arsenite or the proline analog azetidine was also depressed in hsp70-expressing cells relative to that in the nontransfected control cells. As well, the level of activated HSF decreased more rapidly in the hsp70-expressing clones when the cells were heat shocked and returned to 37 degrees C. These results suggest that hsp70 could play an active role in the conversion of HSF back to a conformation that does not bind the heat shock promoter element during the attenuation of the heat shock response.
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Affiliation(s)
- D D Mosser
- Biotechnology Research Institute, National Research Council of Canada, Montréal, Québec
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