Review
Biochemistry & Molecular Biology
Nan Niu, Jinfeng Ye, Zhangli Hu, Junbin Zhang, Yun Wang
Summary: One important feature of tumour development is the regulatory role of metabolic plasticity in maintaining the balance of mitochondrial oxidative phosphorylation and glycolysis in cancer cells. This review aims to elucidate the characteristics of metabolic plasticity on tumour progression, including immune escape, angiogenesis migration, invasiveness, heterogeneity, adhesion, and phenotypic properties of cancers, among others. It provides an overall understanding of the influence of abnormal metabolic remodeling on malignant proliferation and pathophysiological changes in carcinoma.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Veterinary Sciences
Ting Zhu, Xueli Jiang, Hangkuo Xin, Xiaohui Zheng, Xiaonuan Xue, Ji-Long Chen, Baomin Qi
Summary: PRV induces GADD34 expression to promote eIF2 alpha dephosphorylation, maintaining protein synthesis and facilitating viral replication.
VETERINARY RESEARCH
(2021)
Article
Cell Biology
Mengqin Shen, Ruixue Zhang, Wenzhi Jia, Zongping Zhu, Li Zhao, Gang Huang, Jianjun Liu
Summary: This study reveals the association of nuclear EGFR with RNA-binding proteins (RBPs) and identifies NONO as a key RBP in TNBC. NONO is upregulated in TNBC tissues and enhances EGFR transcriptional activity by increasing its stability and recruiting specific proteins. Moreover, the nuclear EGFR/NONO complex plays a critical role in tumorigenesis and chemotherapy resistance in TNBC.
CELL DEATH & DISEASE
(2022)
Article
Biochemistry & Molecular Biology
Zuben P. Brown, Irina S. Abaeva, Swastik De, Christopher U. T. Hellen, Tatyana Pestova, Joachim Frank
Summary: This study presents cryo-EM structures of hepatitis C virus IRES initiation complexes, revealing the dynamic network of 40S/IRES contacts and the conformational changes during the transition from eIF2- to eIF5B-containing 48S complexes, providing important insights into the process of subunit joining.
Article
Microbiology
Zhaolan Ding, Teresa M. Lamb, Ahmad Boukhris, Rachel Porter, Deborah Bell-Pedersen
Summary: In the model fungus Neurospora crassa, the circadian clock regulates rhythmic protein synthesis by controlling the phosphorylation and dephosphorylation of a conserved translation initiation factor, eIF2 alpha. This temporal coordination of phosphorylation and dephosphorylation events allows for the partitioning of translation to the night, which helps coordinate energy metabolism with protein synthesis and cellular growth.
Article
Biotechnology & Applied Microbiology
Shaoran Song, Jie Liu, Miao Zhang, Xiaoqian Gao, Wei Sun, Peijun Liu, Yaochun Wang, Juan Li
Summary: The expression of the EIF3 gene family is associated with prognosis in breast cancer and may serve as a therapeutic target.
Article
Oncology
Angela Rubio, Gavin D. Garland, Aristeidis Sfakianos, Robert F. Harvey, Anne E. Willis
Summary: Abnormalities in RNA binding proteins within the canonical translation factor machinery are associated with tumorigenesis and can be targeted for therapeutic purposes.
SEMINARS IN CANCER BIOLOGY
(2022)
Review
Oncology
Ya Qi, Min Wang, Qi Jiang
Summary: PABPC1, a highly conserved RNA-binding protein, plays a crucial role in tumor development by affecting RNA metabolism and potential disruptions. Understanding the functional role of PABPC1 can provide insights into the regulatory mechanisms of tumor cells.
FRONTIERS IN ONCOLOGY
(2022)
Article
Cell & Tissue Engineering
Salam Salloum-Asfar, Rudolf Engelke, Hanaa Mousa, Neha Goswami, I. Richard Thompson, Freshteh Palangi, Kamal Kamal, Muna N. Al-Noubi, Frank Schmidt, Sara A. Abdulla, Mohamed M. Emara
Summary: This study investigated the response of human-induced pluripotent stem cells (hiPSCs) to hyperosmotic stress compared to non-pluripotent cell lines. It was found that hiPSCs exhibited a different pattern of stress granule (SG) formation under hyperosmotic conditions, which was independent of eIF2 alpha phosphorylation and associated with low apoptosis levels. Proteomics analysis revealed potential implications of microtubule organization on the response to hyperosmotic stress in hiPSCs, suggesting a cellular mechanism for understanding SG dynamics in pluripotent stem cells.
STEM CELLS INTERNATIONAL
(2021)
Article
Multidisciplinary Sciences
Yi-Lan Chen, Jin-Der Wen
Summary: Initiation of protein synthesis in bacteria requires the correct recognition of the start codon on mRNA. This study investigates how the ribosome accommodates the short and degenerate information in the ribosome-binding site (RBS) to initiate translation. The researchers found that the initiation factors and the initiator tRNA play a crucial role in stabilizing the mRNA structure and promoting its unwinding by the 30S subunit. This dynamic assembly-disassembly process ensures the selection of the correct RBS. The findings provide insights into the mechanism of translation initiation in bacteria.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Virology
Barkha Ramnani, Shelby Powell, Adarsh G. Shetty, Praveen Manivannan, Brian R. Hibbard, Douglas W. Leaman, Krishnamurthy Malathi
Summary: Virus infection activates stress granule (SG) formation and interferes with the assembly of SG, indicating the important role of SG in antiviral defense. In this study, we found that fish cells respond to VHSV infection by forming SG, which requires PERK kinase and is essential for IFN production, antiviral signaling, and viral replication. Furthermore, the absence of G3BP1 leads to increased production of IFN, antiviral genes, and viral mRNA, but reduced viral protein synthesis and viral titers. Our findings highlight the critical role of ISR pathway activation and SG formation in regulating VHSV protein translation and replication.
Article
Biochemistry & Molecular Biology
Pavel A. Sakharov, Egor A. Smolin, Dmitry N. Lyabin, Sultan C. Agalarov
Summary: The study confirms that m(6)A-modified mRNAs can be translated under conditions of cap-dependent translation inhibition, but with lower translation initiation efficiency. Additionally, the translation elongation of m(6)A-mRNAs is slower.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Review
Biochemistry & Molecular Biology
Ruoxu Wang, Marc Amoyel
Summary: Stem cells and their progeny maintain tissue homeostasis by replacing lost cells. Besides transcriptional regulation, translational regulation plays a critical role in the fate decisions of stem cells.
FRONTIERS IN MOLECULAR BIOSCIENCES
(2022)
Article
Cell Biology
Haiyun Xie, Mingchao Wang, Haifeng Yu, Huan Wang, Lifeng Ding, Ruyue Wang, Wenqin Luo, Zeyi Lu, Qiming Zheng, Liangliang Ren, Zhenwei Zhou, Wenjing Su, Liqun Xia, Gonghui Li
Summary: The m(7)G modification is found to be present in RNA internal positions and plays a crucial role in the proliferation and metastasis of bladder cancer. METTL1 is shown to promote the processing of miR-760 in an m(7)G-dependent manner and indirectly degrade tumor suppressor ATF3 mRNA.
CELL DEATH DISCOVERY
(2022)
Review
Cell Biology
Mauricio M. Oliveira, Eric Klann
Summary: This review discusses the requirement of de novo protein synthesis in memory formation and its mechanisms. It also introduces the regulation of local dendritic and axonal translation and its impact on memory consolidation. The review emphasizes the importance of eIF2α-dependent translation initiation in synaptic plasticity and memory formation, and explores the role of aberrant eIF2α phosphorylation in Alzheimer's disease.
SEMINARS IN CELL & DEVELOPMENTAL BIOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Damien Marchese, Florent Guislain, Tamara Pringels, Laure Bridoux
Summary: Homopolymeric amino acid repeats are common in human proteins, particularly in transcription factors and kinases. This study focuses on homopolymeric histidine repeats (polyH) and their role in regulating embryonic development. Through bioinformatic analysis, the study identifies that polyH-containing proteins interact with cysteine-rich proteins and proteins containing cysteine repeats. The study further investigates the HOXA1 protein, a transcription factor with a long polyH motif, and finds that the polyH motif is necessary for its interaction with cysteine-rich proteins. Additionally, the study discovers that metal ions are required for the HOXA1-MDFI interaction and identifies three polyH interactors that down-regulate the transcriptional activity of HOXA1.
BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS
(2024)