Nestin[2]

Updated: 2026-09-16

Overview

Nestin is a Class VI intermediate filament protein predominantly expressed in neural stem cells (NSCs) and progenitor cells during development. It was first identified in the 1990s as a marker for neuroepithelial stem cells. Unlike other cytoskeletal proteins, Nestin is transiently expressed and downregulated upon differentiation, making it a critical biomarker for studying neurogenesis and neural repair. Its name derives from its localization in the 'nest' of proliferating neural cells. Nestin is also implicated in the regulation of cell division and cytoskeletal organization, with emerging roles in cancer stem cells and tissue regeneration.

Physical and Chemical Properties

Nestin has a molecular weight of approximately 177 kDa and forms filamentous networks within cells. It shares structural homology with other intermediate filaments but lacks the conserved amino-terminal head domain. This unique feature contributes to its dynamic assembly-disassembly properties during cell cycle progression. In solution, Nestin is typically solubilized in neutral or slightly alkaline buffers. Its stability depends on storage conditions, with lyophilized forms offering longer shelf life. Commercial preparations often include purity certifications (e.g., >90% by SDS-PAGE) and endotoxin testing for in vivo applications.

Main Applications

In neuroscience research, Nestin antibodies are widely used to identify and isolate neural stem cells in vitro and in vivo. It serves as a key marker in studies of brain development, neurodegenerative diseases, and spinal cord injury repair. Nestin-positive cells are also investigated in cancer research, particularly glioblastoma and other tumors with stem-like properties. Regenerative medicine leverages Nestin expression to track transplanted stem cells and evaluate therapeutic efficacy. Emerging applications include tissue engineering scaffolds designed to mimic the neural stem cell niche.

Safety and Storage

Nestin preparations should be handled under biosafety level 1 or 2 conditions, depending on the source material. Recombinant proteins are generally safer than tissue-derived isolates. Always use PPE (gloves, lab coats) to prevent skin contact or inhalation of lyophilized powder. For storage, aliquot solutions to avoid repeated freeze-thaw cycles and add protease inhibitors (e.g., PMSF) for extended stability. Lyophilized Nestin is stable at -20°C for years, while solutions should be used within weeks when stored at 4°C.

B2B Procurement Guide

When procuring Nestin for research or industrial use, prioritize suppliers with ISO 13485 or GMP certification for clinical-grade material. Key specifications include purity (>90%), endotoxin levels (<1 EU/μg), and batch-to-batch consistency. Recombinant Nestin (e.g., human or mouse origin) ensures reproducibility compared to native isolates. For antibody-based applications, validate cross-reactivity with the target species. Bulk purchases (e.g., >100 mg) may qualify for discounted pricing. Always request COA (Certificate of Analysis) and MSDS documentation.