Nuclear Structure, Size Regulation, and Role in Cell Migration DOI Creative Commons
Yuhao Li,

Shanghao Ge,

Jiayi Liu

et al.

Cells, Journal Year: 2024, Volume and Issue: 13(24), P. 2130 - 2130

Published: Dec. 23, 2024

The nucleus serves as a pivotal regulatory and control hub in the cell, governing numerous aspects of cellular functions, including DNA replication, transcription, RNA processing. Therefore, any deviations nuclear morphology, structure, or organization can strongly affect activities. In this review, we provide an updated perspective on structure function components, focusing linker nucleoskeleton cytoskeleton complex, envelope, lamina, chromatin. Additionally, size should be considered fundamental parameter for state. Its regulation is tightly linked to environmental changes, development, various diseases, cancer. Hence, also concise overview different mechanisms by which determined, emerging role mechanical sensor, implications altered morphology physiology diseased cells.

Language: Английский

Lamins: The backbone of the nucleocytoskeleton interface DOI Creative Commons

Joan M. Sobo,

Nicholas S. Alagna,

Sean X. Sun

et al.

Current Opinion in Cell Biology, Journal Year: 2024, Volume and Issue: 86, P. 102313 - 102313

Published: Jan. 22, 2024

Language: Английский

Citations

22

Feeling the force from within – new tools and insights into nuclear mechanotransduction DOI Creative Commons
Julien Morival,

Anna Hazelwood,

Jan Lammerding

et al.

Journal of Cell Science, Journal Year: 2025, Volume and Issue: 138(5)

Published: March 1, 2025

The ability of cells to sense and respond mechanical signals is essential for many biological processes that form the basis cell identity, tissue development maintenance. This process, known as mechanotransduction, involves crucial feedback between force biochemical signals, including epigenomic modifications establish transcriptional programs. These programs, in turn, reinforce properties its withstand perturbation. nucleus has long been hypothesized play a key role mechanotransduction due direct exposure forces transmitted through cytoskeleton, receiving cytoplasmic central function gene regulation. However, parsing out specific contributions from those surface cytoplasm remains substantial challenge. In this Review, we examine latest evidence on how regulates both via nuclear envelope (NE) epigenetic machinery elements within interior. We also explore establishing memory, characterized by mechanical, transcriptomic state persists after stimuli cease. Finally, discuss current challenges field present technological advances are poised overcome them.

Language: Английский

Citations

1

Epigenetic dynamics of aging and cancer development: current concepts from studies mapping aging and cancer epigenomes DOI
Shilpa Bisht, Yiqing Mao, Hariharan Easwaran

et al.

Current Opinion in Oncology, Journal Year: 2024, Volume and Issue: 36(2), P. 82 - 92

Published: Jan. 17, 2024

Purpose of review This emphasizes the role epigenetic processes as incidental changes occurring during aging, which, in turn, promote development cancer. Recent findings Aging is a complex biological process associated with progressive deterioration normal physiological functions, making age significant risk factor for various disorders, including The increasing longevity population has made cancer global burden, developing most cancers increases due to cumulative effect exposure environmental carcinogens and DNA replication errors. classical ‘somatic mutation theory’ cause being challenged by observation that multiple cells harbor driver mutations without resulting In this review, we discuss age-associated alterations, methylation, which occur across all cell types tissues advancing age. There an body evidence linking these prognosis. Summary A better understanding about acquired aging critical comprehending mechanisms leading increase novel therapeutic strategies treatment prevention.

Language: Английский

Citations

4

At the nucleus of cancer: how the nuclear envelope controls tumor progression DOI Creative Commons
Francesca Paganelli, Alessandro Poli,

Serena Truocchio

et al.

MedComm, Journal Year: 2025, Volume and Issue: 6(2)

Published: Jan. 24, 2025

Abstract Historically considered downstream effects of tumorigenesis—arising from changes in DNA content or chromatin organization—nuclear alterations have long been seen as mere prognostic markers within a genome‐centric model cancer. However, recent findings placed the nuclear envelope (NE) at forefront tumor progression, highlighting its active role mediating cellular responses to mechanical forces. Despite significant progress, precise interplay between NE components and cancer progression remains under debate. In this review, we provide comprehensive up‐to‐date overview how composition affect mechanics facilitate malignant transformation, grounded latest molecular functional studies. We also review research that uses advanced technologies, including artificial intelligence, predict malignancy risk treatment outcomes by analyzing morphology. Finally, discuss progress understanding has paved way for mechanotherapy—a promising approach exploits differences cancerous healthy cells. Shifting perspective on diagnostic potential therapeutic targets, calls further investigation into evolving cancer, innovative strategies transform conventional therapies.

Language: Английский

Citations

0

The Complex Interactions Between HIV-1 and Human Host Cell Genome: From Molecular Mechanisms to Clinical Practice DOI Open Access
Manlio Tolomeo,

Francesco Tolomeo,

Antonio Cascio

et al.

International Journal of Molecular Sciences, Journal Year: 2025, Volume and Issue: 26(7), P. 3184 - 3184

Published: March 29, 2025

Antiretroviral therapy (ART) has significantly improved the prognosis of human immunodeficiency virus type 1 (HIV-1) infection. Although ART can suppress plasma viremia below detectable levels, it cannot eradicate HIV-1 DNA (provirus) integrated into host cell genome. This integration often results in unrepaired damage due to HIV-1-induced inhibition repair pathways. Furthermore, infection causes telomere attrition chromosomes, a critical factor contributing CD4+ T senescence and apoptosis. proteins induce damage, block replication, activate responses across various organs. In this review, we explore multiple aspects intricate interactions between genome involved depletion, inflammaging, clonal expansion infected cells long-term-treated patients, viral latency. We discuss molecular mechanisms that contribute comorbidities HIV-1-infected individuals highlight emerging therapeutic strategies targeting provirus.

Language: Английский

Citations

0

The nuclear envelope and nuclear pore complexes in neurodegenerative diseases DOI Creative Commons

Tingyan Wu,

Hongyan Xu, Lei Cheng

et al.

Frontiers in Cell and Developmental Biology, Journal Year: 2025, Volume and Issue: 13

Published: May 13, 2025

The nuclear envelope (NE) and pore complexes (NPCs) play a critical role in maintaining the balance between nucleus cytoplasm, which is essential for structural integrity gene regulatory functions of eukaryotic cells. Disruptions nucleocytoplasmic trafficking mediated by NE NPCs can compromise transport homeostasis, ultimately threatening cellular viability. Recent research has highlighted strong link dysfunction onset neurodegenerative disorders. In this review, we summarize current understanding how impairments contribute to pathogenesis diseases, with particular focus on NPCs. We aim shed light intricate relationship these molecular gatekeepers pathological cascade leading neuronal degeneration, while also exploring potential strategies restore homeostasis mitigate progression devastating neurological conditions.

Language: Английский

Citations

0

Nanoimaging of SARS-CoV-2 viral invasion toward the nucleus and genome DOI Creative Commons
Elma Sakinatus Sajidah, Keesiang Lim, Masaharu Hazawa

et al.

Cell Reports Physical Science, Journal Year: 2024, Volume and Issue: 5(9), P. 102111 - 102111

Published: July 24, 2024

The SARS-CoV-2 virus, responsible for the COVID-19 pandemic, has been linked to significant worldwide illness and death. Examining ultrastructure nanomechanical characteristics of viruses, from a physical standpoint, aids in categorizing their mechanical attributes, providing valuable information novel treatment approaches pinpointing susceptible regions that can guide precise medical interventions. This review presents structural virus particles, focusing on interaction with cells effects nuclear pore transit epigenetic modifications. We present latest progress utilizing high-speed atomic force microscope nanoscale observation its constituents. viruses utilize several components interact host's transport receptors nucleoporins complex influence genome modality. In this review, we also provide an updated summary how parts system these interactions change chromatin.

Language: Английский

Citations

2

Distinct Classes of Lamin-Associated Domains are Defined by Di7erential Patterns of Repressive Histone Methylation DOI Creative Commons
Carlos Martı́n,

Prabakaran Nagarajan,

Elizabeth A. Oser

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 20, 2024

A large fraction of the genome interacts with nuclear periphery through lamina-associated domains (LADs), repressive regions which play an important role in organization and gene regulation across development. Despite much work, LAD structure are not fully understood, a mounting number studies have identified numerous genetic epigenetic differences within LADs, demonstrating they uniform group. Here we profile Lamin B1, HP1β, H3K9me3, H3K9me2, H3K27me3, H3K14ac, H3K27ac, H3K9ac MEF cell lines derived from same mouse colony cluster LADs based on abundance distribution these features LADs. We find that fall into 3 groups, each enriched unique set histone modifications genomic features. Each group is defined by different heterochromatin modification (H3K9me3, or H3K27me3), suggesting all three marks roles chromatin potentially lamina association. also discover borders, including border-specific enrichment H3K14ac. These results reveal distinctions between highlight rich diversity complexity regulatory mechanisms.

Language: Английский

Citations

2

How Chromatin Motor Complexes Influence the Nuclear Architecture: A Review of Chromatin Organization, Cohesins, and Condensins with a Focus on C. elegans DOI Creative Commons
Bahaar Chawla, Györgyi Csankovszki

DNA, Journal Year: 2024, Volume and Issue: 4(1), P. 84 - 103

Published: March 11, 2024

Chromatin is the complex of DNA and associated proteins found in nuclei living organisms. How it organized a major research field as has implications for replication, repair, gene expression. This review summarizes current state chromatin organization field, with special focus on motor complexes cohesin condensin. Containing highly conserved SMC proteins, these are responsible organizing during cell division. Additionally, demonstrated that condensin also have important functions interphase to shape regulate expression genes. Using model organism C. elegans, authors knowledge how perform such diverse roles what open questions still exist field.

Language: Английский

Citations

1

Revealing the Biophysics of Lamina-Associated Domain Formation by Integrating Theoretical Modeling and High-Resolution Imaging DOI Creative Commons
Monika Dhankhar, Zixian Guo, Aayush Kant

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: June 25, 2024

The interactions between chromatin and the nuclear lamina orchestrate cell type-specific gene activity by forming lamina-associated domains (LADs) which preserve cellular characteristics through repression. However, unlike segments, strength of chromatin-lamina their dependence on environment are not well understood. Here, we develop a theory to predict size shape peripheral heterochromatin considering energetics chromatin-chromatin interactions, affinity kinetics methylation acetylation9in human mesenchymal stem cells (hMSCs). Through analysis super-resolution images using this theoretical framework, determine lamina-wide distribution affinities. We find that extracted is highly spatially heterogeneous shows bimodal distribution, indicating regions along with strong binding those exhibiting vanishing interspersed some relatively diminished in line presence structures such as pores. Exploring role environmental cues chromatin, LAD thickness increases when hMSCs cultured softer substrate, correlation contractility-dependent translocation histone deacetylase 3 (HDAC3) from cytosol nucleus. In soft microenvironments, becomes sequestered at lamina, likely due HDAC3 anchoring protein LAP2

Language: Английский

Citations

1