Related Experiment Video
Updated: Jun 26, 2025
12:59
Three and Four-Dimensional Visualization and Analysis Approaches to Study Vertebrate Axial Elongation and Segmentation
Published on: February 28, 2021
3.7K
Cell behaviors that pattern developing tissues: the case of the vertebrate nervous system
1Instituto Gulbenkian de Ciência, Oeiras, Portugal.
Current Topics in Developmental Biology
|May 10, 2024
Summary
Cellular behaviors, though diverse, create reproducible tissue patterns essential for organ development. Understanding these mechanisms, including coordination and plasticity, is key to deciphering pattern formation and evolution.
Area of Science:
- Developmental biology
- Cellular and tissue morphogenesis
- Evolutionary developmental biology
Background:
- Organ development relies on translating dynamic cellular behaviors into functional spatial patterns.
- Quantitative imaging reveals reproducible tissue patterns despite cellular heterogeneity.
- Cellular coordination, variability, and plasticity are crucial for robust pattern formation.
Purpose of the Study:
- To explore how cellular behaviors translate into functional spatial patterns during organogenesis.
- To investigate the principles of robust pattern formation by examining cellular coordination, variability, and plasticity.
- To understand evolutionary changes in tissue organization and the origins of novel spatial configurations.
Main Methods:
- Utilizing quantitative imaging techniques to analyze cellular behaviors.
- Employing comparative studies across different species.
- Examining disease models to understand disruptions in pattern formation.
Main Results:
- Cellular behaviors, despite heterogeneity, consistently yield reproducible tissue patterns.
- Mechanisms like cellular coordination, intrinsic variability, and plasticity are vital for successful pattern formation.
- Tissue organization has evolved significantly, with variations in cell behavior driving novel spatial configurations.
Conclusions:
- Dissecting pattern formation requires looking beyond molecular mechanisms to understand emergent principles.
- Comparative studies and disease models provide powerful insights into the fundamentals of tissue development and evolution.
- Further research is needed to fully understand the core principles and address open questions in vertebrate nervous system development.
Related Concept Videos
01:30Neurulation
41.9K
Neurulation is the embryological process which forms the precursors of the central nervous system and occurs after gastrulation has established the three primary cell layers of the embryo: ectoderm, mesoderm, and endoderm. In humans, the majority of this system is formed via primary neurulation, in which the central portion of the ectoderm—originally appearing as a flat sheet of cells—folds upwards and inwards, sealing off to form a hollow neural tube. As development proceeds, the...
41.9K
01:56Gastrulation
57.3K
Gastrulation establishes the three primary tissues of an embryo: the ectoderm, mesoderm, and endoderm. This developmental process relies on a series of intricate cellular movements, which in humans transforms a flat, “bilaminar disc” composed of two cell sheets into a three-tiered structure. In the resulting embryo, the endoderm serves as the bottom layer, and stacked directly above it is the intermediate mesoderm, and then the uppermost ectoderm. Respectively, these tissue strata...
57.3K
01:51Determination
18.5K
During embryogenesis, cells become progressively committed to different fates through a two-step process: specification followed by determination. Specification is demonstrated by removing a segment of an early embryo, “neutrally” culturing the tissue in vitro—for example, in a petri dish with simple medium—and then observing the derivatives. If the cultured region gives rise to cell types that it would normally generate in the embryo, this means that it is specified. In...
18.5K
01:10Zygotic Development And Stem Cell Formation
5.2K
The development of all multicellular organisms starts with the fusion of haploid cells called sperm and egg to form a diploid zygote. A zygote is a totipotent cell that can develop into a complete organism. The zygote undergoes cell division or cleavage to form an 8-cell mass. Until this stage, the cells are spherical, loosely attached, and remain totipotent. Totipotent cells are capable of developing both the embryonic and the extraembryonic tissues. However, as they continue to divide, they...
5.2K
01:15Neurogenesis and Regeneration of Nervous Tissue
765
In the CNS, neurogenesis, the birth of new neurons from stem cells, is limited to the hippocampus in adults. In other regions of the brain and spinal cord, neurogenesis is almost non-existent due to inhibitory influences from neuroglia, especially oligodendrocytes, and the absence of growth-stimulating cues. The myelin produced by oligodendrocytes in the CNS inhibits neuronal regeneration. Furthermore, astrocytes proliferate rapidly after neuronal damage, forming scar tissue that physically...
765
01:18Tissues
79.9K
Cells with similar structure and function are grouped into tissues. A group of tissues with a specialized function is called an organ. There are four main types of tissue in vertebrates: epithelial, connective, muscle, and nervous.
79.9K