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Kodiha M, Azad N, Chu S, Crampton N, Stochaj U. Oxidative stress and signaling through EGFR and PKA pathways converge on the nuclear transport factor RanBP1. Eur J Cell Biol 2024; 103:151376. [PMID: 38011756 DOI: 10.1016/j.ejcb.2023.151376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 11/01/2023] [Accepted: 11/17/2023] [Indexed: 11/29/2023] Open
Abstract
Nuclear protein trafficking requires the soluble transport factor RanBP1. The subcellular distribution of RanBP1 is dynamic, as the protein shuttles between the nucleus and cytoplasm. To date, the signaling pathways regulating RanBP1 subcellular localization are poorly understood. During interphase, RanBP1 resides mostly in the cytoplasm. We show here that oxidative stress concentrates RanBP1 in the nucleus, and our study defines the underlying mechanisms. Specifically, RanBP1's cysteine residues are not essential for its oxidant-induced relocation. Furthermore, our pharmacological approaches uncover that signaling mediated by epidermal growth factor receptor (EGFR) and protein kinase A (PKA) control RanBP1 localization during stress. In particular, pharmacological inhibitors of EGFR or PKA diminish the oxidant-dependent relocation of RanBP1. Mutant analysis identified serine 60 and tyrosine 103 as regulators of RanBP1 nuclear accumulation during oxidant exposure. Taken together, our results define RanBP1 as a target of oxidative stress and a downstream effector of EGFR and PKA signaling routes. This positions RanBP1 at the intersection of important cellular signaling circuits.
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Affiliation(s)
- Mohamed Kodiha
- Department of Physiology McGill University, Montreal H3G 1Y6, Canada
| | - Nabila Azad
- Department of Physiology McGill University, Montreal H3G 1Y6, Canada
| | - Siwei Chu
- Department of Physiology McGill University, Montreal H3G 1Y6, Canada
| | - Noah Crampton
- Department of Physiology McGill University, Montreal H3G 1Y6, Canada
| | - Ursula Stochaj
- Department of Physiology McGill University, Montreal H3G 1Y6, Canada.
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Yang S, Zhu G, He R, Fang D, Feng J. Advances in transcriptomics and proteomics in differentiated thyroid cancer: An updated perspective (Review). Oncol Lett 2023; 26:396. [PMID: 37600346 PMCID: PMC10433702 DOI: 10.3892/ol.2023.13982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 05/25/2023] [Indexed: 08/22/2023] Open
Abstract
Thyroid cancer (TC) is a broad classification of neoplasms that includes differentiated thyroid cancer (DTC) as a common histological subtype. DTC is characterized by an increased mortality rate in advanced stages, which contributes to the overall high mortality rate of DTC. This progression is mainly attributed to alterations in molecular driver genes, resulting in changes in phenotypes such as invasion, metastasis and dedifferentiation. Clinical management of DTC is challenging due to insufficient diagnostic and therapeutic options. The advent of-omics technology has presented a promising avenue for the diagnosis and treatment of DTC. Identifying molecular markers that can predict the early progression of DTC to a late adverse outcome is essential for precise diagnosis and treatment. The present review aimed to enhance our understanding of DTC by integrating big data with biological systems through-omics technology, specifically transcriptomics and proteomics, which can shed light on the molecular mechanisms underlying carcinogenesis.
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Affiliation(s)
- Shici Yang
- Department of Nuclear Medicine, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Gaohong Zhu
- Department of Nuclear Medicine, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Rui He
- Department of Nuclear Medicine, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Dong Fang
- Department of Nuclear Medicine, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Jiaojiao Feng
- Department of Nuclear Medicine, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
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Comiskey DF, He H, Liyanarachchi S, Sheikh MS, Hendrickson IV, Yu L, Brock PL, de la Chapelle A. Characterizing the function of EPB41L4A in the predisposition to papillary thyroid carcinoma. Sci Rep 2020; 10:19984. [PMID: 33203992 PMCID: PMC7672090 DOI: 10.1038/s41598-020-76606-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 10/20/2020] [Indexed: 12/21/2022] Open
Abstract
Papillary thyroid carcinoma (PTC) is the most common histotype of thyroid carcinoma. The heritability of PTC is high compared to other cancers, but its underlying causes are unknown. A recent genome-wide association study revealed the association of a variant at the 5q22 locus, rs73227498, with PTC predisposition. We report that rs17134155, a variant in high linkage disequilibrium with rs73227498, is located in an enhancer region downstream of coding transcripts of EPB41L4A. Rs17134155 showed significant enhancer activity in luciferase assays, and haplotypes containing the protective allele of this variant conferred a significantly lower risk of PTC. While the index SNP, rs73227498, acted as a significant cis-eQTL for expression of EPB41L4A, rs17134155 was a significant cis-sQTL for the alternative splicing of a non-coding transcript of EPB41L4A, called EPB41L4A-203. We also performed knockdown of EPB41L4A followed by microarray analysis. Some of the top differentially-expressed genes were represented among regulators of the WNT/β-catenin signaling pathway. Our results indicate that an enhancer region at 5q22 regulates the expression and splicing of EPB41L4A transcripts. We also provide evidence that EPB41L4A expression is involved in regulating growth and differentiation pathways, suggesting that decreased expression of EPB41L4A is a mechanism in the predisposition to PTC.
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Affiliation(s)
- Daniel F Comiskey
- Human Cancer Genetics Program and Department of Cancer Biology and Genetics, Comprehensive Cancer Center, College of Medicine, The Ohio State University Wexner Medical Center, 804 Biomedical Research Tower, 460 W 12th Ave., Columbus, OH, 43210, USA
| | - Huiling He
- Human Cancer Genetics Program and Department of Cancer Biology and Genetics, Comprehensive Cancer Center, College of Medicine, The Ohio State University Wexner Medical Center, 804 Biomedical Research Tower, 460 W 12th Ave., Columbus, OH, 43210, USA
| | - Sandya Liyanarachchi
- Human Cancer Genetics Program and Department of Cancer Biology and Genetics, Comprehensive Cancer Center, College of Medicine, The Ohio State University Wexner Medical Center, 804 Biomedical Research Tower, 460 W 12th Ave., Columbus, OH, 43210, USA
| | - Mehek S Sheikh
- Human Cancer Genetics Program and Department of Cancer Biology and Genetics, Comprehensive Cancer Center, College of Medicine, The Ohio State University Wexner Medical Center, 804 Biomedical Research Tower, 460 W 12th Ave., Columbus, OH, 43210, USA
| | - Isabella V Hendrickson
- Human Cancer Genetics Program and Department of Cancer Biology and Genetics, Comprehensive Cancer Center, College of Medicine, The Ohio State University Wexner Medical Center, 804 Biomedical Research Tower, 460 W 12th Ave., Columbus, OH, 43210, USA
| | - Lianbo Yu
- Center for Biostatistics, The Ohio State University Wexner Medical Center, Columbus, OH, 43210, USA
| | - Pamela L Brock
- Department of Internal Medicine, Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, 43210, USA
| | - Albert de la Chapelle
- Human Cancer Genetics Program and Department of Cancer Biology and Genetics, Comprehensive Cancer Center, College of Medicine, The Ohio State University Wexner Medical Center, 804 Biomedical Research Tower, 460 W 12th Ave., Columbus, OH, 43210, USA.
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