# Neurons in a Dish: A Review of In Vitro Cell Models for Studying Neurogenesis

## TL;DR

This paper reviews different lab-based cell models used to study how new neurons are formed, aiming to better understand brain development and diseases.

## Contribution

The paper provides a comprehensive overview of in vitro models for neurogenesis, comparing their strengths and limitations.

## Key findings

- Primary cultures closely mimic in vivo neuronal characteristics but have limited flexibility.
- Pluripotent stem cells and neuroblastoma cell lines offer human-derived, flexible alternatives for studying specific neurogenic stages.
- Each model has unique advantages and limitations, guiding researchers in selecting the most suitable system for their studies.

## Abstract

Understanding neurogenesis, the complex biological process of generating new neurons, is crucial for understanding brain development, function, and potential therapeutic interventions for neurological disorders. Due to the inherent difficulty of directly observing neurogenesis in the human brain, researchers heavily rely on cell models to simulate this process under controlled conditions. These models serve as invaluable tools to understand the mechanisms underlying the different stages of neurogenesis, helping researchers explore how neurons are generated, mature, and integrate into neural networks, thereby contributing to both normal brain function and neurological disorders. Therefore, this work provides a comprehensive overview of different cell models commonly used in neurogenesis research, from primary cultures and stem cells to immortalized cell lines. This compilation highlights the strengths and limitations of each cell model, which ultimately allows researchers to select the most appropriate model system for their research, thus enhancing the efforts towards unraveling the mysteries of the brain.

Different in vitro cell models are valuable to study the different steps of neurogenesis, from the proliferation of neural stem and progenitor cells to the maturation of neurons. Pluripotent stem cells (including embryonic stem cells and induced pluripotent stem cells), immortalized human neuroblastoma cell lines (SH‐SY5Y, IMR‐32), and primary brain cell cultures each offer unique advantages and limitations for modeling neuronal development. While primary cultures closely mimic in vivo neuronal characteristics, neuroblastoma cell lines and pluripotent stem cells provide human‐derived and highly flexible alternatives that enable the study of specific neurogenic stages under controlled conditions.