Tubulin: Structure, Functions and Roles in Disease

Tubulin isotypes are known to form heterodimers that assemble into microtubules, which are essential for multiple cellular functions. Prior research has shown that these structures provide structural support, enable transport pathways, and generate forces during cell division. It was already known that tubulin isotypes are expressed in a spatially and temporally regulated manner. Some isotypes are differentially expressed in normal versus neoplastic cells, which has led to their use in cancer chemotherapy. Recent studies have suggested that tubulin isotypes may also function in the nucleus and regulate mitochondrial ion channels. These findings have raised questions about the broader roles of tubulin beyond microtubule assembly. The role of γ-tubulin in microtubule nucleation has also been established. However, the full extent of tubulin's involvement in disease mechanisms remains unclear.

This special issue aims to compile recent findings on tubulin structure, function, and disease relevance. The goal is to examine how tubulin isotypes contribute to both normal and pathological cellular processes. The issue includes original research and review articles to cover diverse aspects of tubulin biology. It seeks to explore the role of tubulin in cancer chemotherapy and drug development. The purpose is also to investigate how tubulin mutations and modifications may serve as molecular targets for new drugs. The issue addresses the connection between tubulinopathies and brain pathologies like Alzheimer’s disease. It also seeks to uncover signaling pathways affecting tubulin functions in mast cell activation. The overall aim is to advance understanding of tubulin’s role in health and disease.

The special issue includes eight articles, five original and three review papers. These papers cover a range of tubulin-related topics, including structure, function, and disease mechanisms. The original research papers present new findings on tubulin isotypes and their roles in cellular processes. Review papers synthesize existing literature to provide comprehensive summaries of tubulin biology. The studies employ methods such as gene expression analysis, mutation detection, and functional assays. Some papers focus on microtubule nucleation and γ-tubulin’s role in cell cycle regulation. Others investigate the bioenergetic functions of tubulin in cancer cells. The issue also includes work on signaling pathways involved in tubulin function during mast cell activation.

The issue highlights that tubulin isotypes are differentially expressed in cancer cells and may serve as drug targets. Some isotypes are overexpressed in nuclei and regulate mitochondrial ion channels. The findings suggest that tubulin functions beyond microtubule assembly include nuclear and bioenergetic roles. The issue includes evidence that tubulin mutations in tumors may be linked to drug resistance. It also presents new insights into tubulinopathies and their connection to Alzheimer’s disease. γ-tubulin is shown to be involved in cell cycle and stress signaling pathways. The issue reports on signaling mechanisms affecting tubulin during mast cell activation. These results provide a broader view of tubulin’s roles in health and disease.

The authors propose that tubulin isotypes play diverse roles in cellular functions beyond microtubule assembly. The findings suggest that these isotypes may serve as molecular targets for new anti-microtubular drugs. The issue emphasizes the importance of understanding tubulin mutations and post-translational modifications. It also highlights the relevance of tubulin in neurodegenerative diseases like Alzheimer’s. The authors suggest that γ-tubulin functions in cell cycle and stress signaling. The issue concludes that tubulin’s role in mast cell activation is an area needing further investigation. The compilation of original and review papers provides a comprehensive view of tubulin biology. The authors state that these findings may lead to new therapeutic strategies for cancer and inflammatory diseases.