Related Experiment Video

Updated: Mar 25, 2026

Functional Evaluation of Biological Neurotoxins in Networked Cultures of Stem Cell-derived Central Nervous System Neurons
15:05

Functional Evaluation of Biological Neurotoxins in Networked Cultures of Stem Cell-derived Central Nervous System Neurons

Published on: February 5, 2015

9.9K

New Brain Tumor Entities Emerge from Molecular Classification of CNS-PNETs

Dominik Sturm1,2, Brent A Orr3, Umut H Toprak4

  • 1Division of Pediatric Neurooncology, German Cancer Research Center (DKFZ) and German Cancer Consortium (DKTK), 69120 Heidelberg, Germany.

Cell
|February 27, 2016
PubMed

Insights

This study reclassifies aggressive central nervous system primitive neuroectodermal tumors (CNS-PNETs). New molecular entities with distinct genetic alterations offer improved diagnosis and targeted therapies for these rare pediatric and adult brain tumors.

Area of Science:

  • Neuro-oncology
  • Molecular Pathology
  • Pediatric Oncology

Background:

  • Central nervous system primitive neuroectodermal tumors (CNS-PNETs) are aggressive embryonal tumors.
  • Accurate diagnosis is crucial for effective treatment but can be challenging due to overlapping features.

Purpose of the Study:

  • To molecularly reclassify institutionally diagnosed CNS-PNETs.
  • To identify novel CNS tumor entities with distinct genetic alterations and clinical features.
  • To facilitate improved diagnosis and therapeutic strategies for poorly differentiated CNS tumors.

Main Methods:

  • Comprehensive molecular profiling of CNS-PNETs.
  • Comparative analysis against established CNS tumor entities.
  • Histopathological and clinical data correlation.

Main Results:

  • A significant subset of CNS-PNETs were reclassified into known tumor types.
  • Four novel molecular CNS tumor entities were identified: CNS neuroblastoma with FOXR2 activation (CNS NB-FOXR2), CNS Ewing sarcoma family tumor with CIC alteration (CNS EFT-CIC), CNS high-grade neuroepithelial tumor with MN1 alteration (CNS HGNET-MN1), and CNS high-grade neuroepithelial tumor with BCOR alteration (CNS HGNET-BCOR).
  • Each new entity is associated with a recurrent genetic alteration and unique histopathological and clinical characteristics.

Conclusions:

  • Molecular reclassification refines the diagnosis of CNS-PNETs.
  • The identification of these new entities provides a foundation for developing targeted therapies.
  • This work will enable more precise clinical trials for patients with poorly differentiated CNS tumors.

More Related Videos

Single Cell Multiplex Reverse Transcription Polymerase Chain Reaction After Patch-clamp10:44

Single Cell Multiplex Reverse Transcription Polymerase Chain Reaction After Patch-clamp

Published on: June 20, 2018

10.5K
Cell Subtype-specific Analysis of Neuronal Membrane Proteasome in Somatosensory Neurons09:27

Cell Subtype-specific Analysis of Neuronal Membrane Proteasome in Somatosensory Neurons

Published on: October 10, 2025

672

Related Concept Videos

Nervous Tissue: Neuron Types01:19

Nervous Tissue: Neuron Types

Neurons, the fundamental units of the nervous system, can be classified based on both their structural and functional characteristics.
Structurally, neurons are categorized into three main types: multipolar, bipolar, and unipolar (or pseudounipolar). Multipolar neurons, which are the most common type in the brain and spinal cord, as well as all motor neurons, possess multiple dendrites and a single axon.
Bipolar neurons, on the other hand, have one primary dendrite and one axon. They are...
7.6K
Classification of Neurotransmitters01:30

Classification of Neurotransmitters

Neurotransmitters play a crucial role in the communication between neurons in the autonomic nervous system. Neurons in the autonomic nervous system can be cholinergic or adrenergic depending on the neurotransmitters synthesized. Cholinergic neurons use acetylcholine as their primary neurotransmitter. This includes all the preganglionic fibers of the sympathetic and pre- and postganglionic fibers of the parasympathetic nervous systems. In addition, neurons of the somatic nervous system also use...
5.9K
Neural Circuits01:25

Neural Circuits

Neural circuits and neuronal pools are two of the main structures found in the nervous system. Neural circuits are networks of neurons that work together to carry out a specific task or process. They consist of interconnected neurons and glial cells, which provide structural and metabolic support.
Neuronal pools are collections of nerve cells with similar functions and interact through chemical and electrical signals. These pools include both interneurons (the central neural circuit nodes that...
3.2K
Organization of the Nervous System01:13

Organization of the Nervous System

The nervous system is one of the most complex systems in our body. It is organized into two main divisions: the central nervous system (CNS) and the peripheral nervous system (PNS).
The CNS, comprising the brain and spinal cord, houses billions of neurons. The brain is housed in the skull, while the spinal cord is linked to the brain through the foramen magnum of the occipital bone and is surrounded by the protective structure of the vertebral column. It is responsible for processing various...
12.6K
Peripheral Nervous System: Ganglia and Nerves01:24

Peripheral Nervous System: Ganglia and Nerves

The Peripheral Nervous System (PNS) is a crucial component of the body's neural network, extending beyond the central nervous system (CNS) to bridge the gap between the CNS and the external environment. It encompasses nerves, ganglia, and sensory receptors.
Nerves
The nerve is a bundle of axons that serves as the communication highway in the PNS. Each nerve is ensheathed in a protective layer of connective tissue called the epineurium. This outermost layer safeguards the nerve and supports the...
7.2K
Neuron Structure01:30

Neuron Structure

Neurons are the main type of cell in the nervous system that generate and transmit electrochemical signals. They primarily communicate with each other using neurotransmitters at specific junctions called synapses. Neurons come in many shapes that often relate to their function, but most share three main structures: an axon and dendrites that extend out from a cell body.
Structure and Function of Neurons
The neuronal cell body—the soma— houses the nucleus and organelles vital to...
21.1K