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Ct Chow C, Kobayashi M, Kambe G, Harada H. ZBTB2 is recruited to a specific subset of HIF-1 target loci to facilitate full gene expression under hypoxia. J Mol Biol 2023:168162. [PMID: 37257772 DOI: 10.1016/j.jmb.2023.168162] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 05/18/2023] [Accepted: 05/23/2023] [Indexed: 06/02/2023]
Abstract
The cellular response to hypoxia is mainly governed by a transcription factor, hypoxia-inducible factor 1 (HIF-1). Although upregulation of HIF-1 target genes has been hypothesized to require interaction of HIF-1 with other coactivators, much remains to be elucidated regarding the underlying mechanisms. Here, we demonstrate that zinc finger and BTB domain-containing protein 2 (ZBTB2) enhances the expression of certain HIF-1 target genes under hypoxia. ChIP-Seq analysis showed that there is a subset of HIF-1 target genes with overlapping HIF-1 and ZBTB2 peaks. Examination of a representative gene, EGFR antisense RNA 1 (EGFR-AS1), showed that HIF-1 binding to the consensus hypoxia-responsive element (HRE) sequence resulted in the recruitment of ZBTB2 to the gene locus and increased p300-mediated histone acetylation, leading to enhanced gene expression under hypoxia. In contrast, expression of HIF-1 target genes lacking ZBTB2 peaks, such as carbonic anhydrase 9 (CA9), was not upregulated by ZBTB2. These findings demonstrate that ZBTB2 is a novel factor that can be recruited to the vicinity of HREs on a subset of HIF-1 target gene loci, and is required for their full expression under hypoxia.
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Affiliation(s)
- Christalle Ct Chow
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Kyoto 606-8501, Japan
| | - Minoru Kobayashi
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Kyoto 606-8501, Japan; Department of Genome Repair Dynamics, Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Kyoto 606-8501, Japan
| | - Gouki Kambe
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Kyoto 606-8501, Japan
| | - Hiroshi Harada
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Kyoto 606-8501, Japan; Department of Genome Repair Dynamics, Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Kyoto 606-8501, Japan.
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Koyasu S, Horita S, Saito K, Kobayashi M, Ishikita H, Chow CCT, Kambe G, Nishikawa S, Menju T, Morinibu A, Okochi Y, Tabuchi Y, Onodera Y, Takeda N, Date H, Semenza GL, Hammond EM, Harada H. ZBTB2 links p53 deficiency to HIF-1-mediated hypoxia signaling to promote cancer aggressiveness. EMBO Rep 2023; 24:e54042. [PMID: 36341521 PMCID: PMC9827547 DOI: 10.15252/embr.202154042] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 10/16/2022] [Accepted: 10/19/2022] [Indexed: 11/09/2022] Open
Abstract
Aberrant activation of the hypoxia-inducible transcription factor HIF-1 and dysfunction of the tumor suppressor p53 have been reported to induce malignant phenotypes and therapy resistance of cancers. However, their mechanistic and functional relationship remains largely unknown. Here, we reveal a mechanism by which p53 deficiency triggers the activation of HIF-1-dependent hypoxia signaling and identify zinc finger and BTB domain-containing protein 2 (ZBTB2) as an important mediator. ZBTB2 forms homodimers via its N-terminus region and increases the transactivation activity of HIF-1 only when functional p53 is absent. The ZBTB2 homodimer facilitates invasion, distant metastasis, and growth of p53-deficient, but not p53-proficient, cancers. The intratumoral expression levels of ZBTB2 are associated with poor prognosis in lung cancer patients. ZBTB2 N-terminus-mimetic polypeptides competitively inhibit ZBTB2 homodimerization and significantly suppress the ZBTB2-HIF-1 axis, leading to antitumor effects. Our data reveal an important link between aberrant activation of hypoxia signaling and loss of a tumor suppressor and provide a rationale for targeting a key mediator, ZBTB2, to suppress cancer aggressiveness.
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Affiliation(s)
- Sho Koyasu
- Laboratory of Cancer Cell Biology, Graduate School of BiostudiesKyoto UniversityKyotoJapan
- Department of Genome Repair Dynamics, Radiation Biology Center, Graduate School of BiostudiesKyoto UniversityKyotoJapan
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of MedicineKyoto UniversityKyotoJapan
- Research Center for Advanced Science and TechnologyThe University of TokyoTokyoJapan
| | - Shoichiro Horita
- Department of Bioregulation and Pharmacological MedicineFukushima Medical UniversityFukushimaJapan
| | - Keisuke Saito
- Research Center for Advanced Science and TechnologyThe University of TokyoTokyoJapan
| | - Minoru Kobayashi
- Laboratory of Cancer Cell Biology, Graduate School of BiostudiesKyoto UniversityKyotoJapan
- Department of Genome Repair Dynamics, Radiation Biology Center, Graduate School of BiostudiesKyoto UniversityKyotoJapan
| | - Hiroshi Ishikita
- Research Center for Advanced Science and TechnologyThe University of TokyoTokyoJapan
| | - Christalle CT Chow
- Laboratory of Cancer Cell Biology, Graduate School of BiostudiesKyoto UniversityKyotoJapan
| | - Gouki Kambe
- Laboratory of Cancer Cell Biology, Graduate School of BiostudiesKyoto UniversityKyotoJapan
| | - Shigeto Nishikawa
- Department of Thoracic Surgery, Graduate School of MedicineKyoto UniversityKyotoJapan
| | - Toshi Menju
- Department of Thoracic Surgery, Graduate School of MedicineKyoto UniversityKyotoJapan
| | - Akiyo Morinibu
- Laboratory of Cancer Cell Biology, Graduate School of BiostudiesKyoto UniversityKyotoJapan
- Department of Genome Repair Dynamics, Radiation Biology Center, Graduate School of BiostudiesKyoto UniversityKyotoJapan
| | - Yasushi Okochi
- Laboratory of Cancer Cell Biology, Graduate School of BiostudiesKyoto UniversityKyotoJapan
- Faculty of MedicineKyoto UniversityKyotoJapan
| | - Yoshiaki Tabuchi
- Division of Molecular Genetics Research, Life Science Research CenterUniversity of ToyamaToyamaJapan
| | - Yasuhito Onodera
- Global Center for Biomedical Science and Engineering, Faculty of MedicineHokkaido UniversitySapporoJapan
| | - Norihiko Takeda
- Division of Cardiology and Metabolism, Center for Molecular MedicineJichi Medical UniversityTochigiJapan
| | - Hiroshi Date
- Department of Thoracic Surgery, Graduate School of MedicineKyoto UniversityKyotoJapan
| | - Gregg L Semenza
- McKusick‐Nathans Institute of Genetic MedicineJohns Hopkins University School of MedicineBaltimoreMarylandUSA
- Institute for Cell EngineeringJohns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Ester M Hammond
- MRC Oxford Institute for Radiation Oncology, Department of OncologyUniversity of OxfordOxfordUK
| | - Hiroshi Harada
- Laboratory of Cancer Cell Biology, Graduate School of BiostudiesKyoto UniversityKyotoJapan
- Department of Genome Repair Dynamics, Radiation Biology Center, Graduate School of BiostudiesKyoto UniversityKyotoJapan
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Shirai Y, Chow CCT, Kambe G, Suwa T, Kobayashi M, Takahashi I, Harada H, Nam JM. An Overview of the Recent Development of Anticancer Agents Targeting the HIF-1 Transcription Factor. Cancers (Basel) 2021; 13:cancers13112813. [PMID: 34200019 PMCID: PMC8200185 DOI: 10.3390/cancers13112813] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 05/30/2021] [Accepted: 05/31/2021] [Indexed: 02/07/2023] Open
Abstract
Hypoxia, a characteristic feature of solid tumors, is associated with the malignant phenotype and therapy resistance of cancers. Hypoxia-inducible factor 1 (HIF-1), which is responsible for the metazoan adaptive response to hypoxia, has been recognized as a rational target for cancer therapy due to its critical functions in hypoxic regions. In order to efficiently inhibit its activity, extensive efforts have been made to elucidate the molecular mechanism underlying the activation of HIF-1. Here, we provide an overview of relevant research, particularly on a series of HIF-1 activators identified so far and the development of anticancer drugs targeting them.
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Affiliation(s)
- Yukari Shirai
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Yoshida-Konoe-Cho, Sakyo-Ku, Kyoto 606-8501, Japan; (Y.S.); (C.C.T.C.); (G.K.); (T.S.); (M.K.); (I.T.)
- Department of Genome Repair Dynamics, Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Yoshida-Konoe-Cho, Sakyo-Ku, Kyoto 606-8501, Japan
| | - Christalle C. T. Chow
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Yoshida-Konoe-Cho, Sakyo-Ku, Kyoto 606-8501, Japan; (Y.S.); (C.C.T.C.); (G.K.); (T.S.); (M.K.); (I.T.)
- Department of Genome Repair Dynamics, Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Yoshida-Konoe-Cho, Sakyo-Ku, Kyoto 606-8501, Japan
| | - Gouki Kambe
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Yoshida-Konoe-Cho, Sakyo-Ku, Kyoto 606-8501, Japan; (Y.S.); (C.C.T.C.); (G.K.); (T.S.); (M.K.); (I.T.)
- Department of Genome Repair Dynamics, Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Yoshida-Konoe-Cho, Sakyo-Ku, Kyoto 606-8501, Japan
| | - Tatsuya Suwa
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Yoshida-Konoe-Cho, Sakyo-Ku, Kyoto 606-8501, Japan; (Y.S.); (C.C.T.C.); (G.K.); (T.S.); (M.K.); (I.T.)
- Department of Genome Repair Dynamics, Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Yoshida-Konoe-Cho, Sakyo-Ku, Kyoto 606-8501, Japan
| | - Minoru Kobayashi
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Yoshida-Konoe-Cho, Sakyo-Ku, Kyoto 606-8501, Japan; (Y.S.); (C.C.T.C.); (G.K.); (T.S.); (M.K.); (I.T.)
- Department of Genome Repair Dynamics, Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Yoshida-Konoe-Cho, Sakyo-Ku, Kyoto 606-8501, Japan
| | - Itsuki Takahashi
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Yoshida-Konoe-Cho, Sakyo-Ku, Kyoto 606-8501, Japan; (Y.S.); (C.C.T.C.); (G.K.); (T.S.); (M.K.); (I.T.)
- Department of Genome Repair Dynamics, Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Yoshida-Konoe-Cho, Sakyo-Ku, Kyoto 606-8501, Japan
| | - Hiroshi Harada
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Yoshida-Konoe-Cho, Sakyo-Ku, Kyoto 606-8501, Japan; (Y.S.); (C.C.T.C.); (G.K.); (T.S.); (M.K.); (I.T.)
- Department of Genome Repair Dynamics, Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Yoshida-Konoe-Cho, Sakyo-Ku, Kyoto 606-8501, Japan
- Correspondence: (H.H.); (J.-M.N.); Tel.: +81-75-753-7560 (H.H.); +81-75-753-7567 (J.-M.N.)
| | - Jin-Min Nam
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Yoshida-Konoe-Cho, Sakyo-Ku, Kyoto 606-8501, Japan; (Y.S.); (C.C.T.C.); (G.K.); (T.S.); (M.K.); (I.T.)
- Department of Genome Repair Dynamics, Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Yoshida-Konoe-Cho, Sakyo-Ku, Kyoto 606-8501, Japan
- Correspondence: (H.H.); (J.-M.N.); Tel.: +81-75-753-7560 (H.H.); +81-75-753-7567 (J.-M.N.)
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Altarriba J, Kambe G, Pollatsek A, Rayner K. Semantic codes are not used in integrating information across eye fixations in reading: evidence from fluent Spanish-English bilinguals. Percept Psychophys 2001; 63:875-90. [PMID: 11521853 DOI: 10.3758/bf03194444] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The question of whether meaning can be extracted from unidentified parafoveal words was examined using fluent Spanish-English bilinguals. In Experiment 1, subjects fixated on a central cross, and a preview word was presented to the right of fixation in parafoveal vision. During the saccade to the parafoveal preview word, the preview was replaced by the target word, which the subject was required to name. In Experiment 2, subjects read sentences containing the target word, and, as in the naming task, a preview word was replaced by the target word when the subject's saccade crossed a boundary location. In both experiments, preview words were identical to the target word, translations, orthographic controls for the translations, or unrelated words in the opposite language. In both experiments, the preview benefit from the translation conditions was no greater than would be predicted by the orthographic similarity of the preview to the target. Hence, the data indicated that subjects obtained no useful semantic information from words seen parafoveally that enabled them to identify them more quickly on the subsequent fixation.
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Affiliation(s)
- J Altarriba
- University at Albany, State University of New York, USA
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Abstract
Readers' eye movements were monitored as they read biased ambiguous target words in the context of a short paragraph. Two aspects of context were manipulated. The global context was presented in the topic sentence of the paragraph and instantiated either the dominant or the subordinate meaning of biased ambiguous target words (those with highly dominant meanings). Local contextual information either preceded or followed the target word and was always consistent with the subordinate interpretation. Consistent with prior research, we obtained a subordinate bias effect wherein readers looked longer at the ambiguous words than control words when the preceding context instantiated the subordinate meaning. More importantly, the magnitude of the subordinate bias effect was the same when global context alone, local context alone, or local and global context combined were consistent with the subordinate meaning of the ambiguous word. The results of this study indicate that global contextual information (1) has an immediate impact on lexical ambiguity resolution when no local disambiguating information is available, (2) has no additional effect when it is consistent with local information, but (3) does have a slightly delayed effect when inconsistent with local information.
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Affiliation(s)
- G Kambe
- University of Massachusetts, Amherst, USA
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Abstract
The effect of clause wrap-up on eye movements in reading was examined. Readers read passages in which a target category noun referred to either a high typical or a low typical antecedent. In addition, the category noun was either clause final or non-clause final. There were four primary results: (1) Readers looked longer at a category noun when its antecedent was a low typical member of the category than when it was a high typical member; (2) readers looked longer at the category noun and at the post-category region when they were clause final than when they were not clause final; (3) readers regressed from a category noun or post-category region more frequently when it was clause final than when it was not clause final; and (4) readers made longer initial saccades when their eyes left the category noun or post-category region when this word was in clause final position than when it was not clause final. The last result suggests that sometimes higher order processes that are related to making a decision about when to move the eyes impinge on lower level decisions that are typically associated with deciding where to move the eyes.
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Affiliation(s)
- K Rayner
- Psychology Department, University of Massachusetts, Amherst, MA 01003, USA.
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