Evidence map›Paper›PMID 31654854›Full record

ArticleiScience2019

Bundled Three-Dimensional Human Axon Tracts Derived from Brain Organoids.

D Kacy Cullen, Wisberty J Gordián-Vélez, Laura A Struzyna, Dennis Jgamadze, James Lim, Kathryn L Wofford, Kevin D Browne, H Isaac Chen

Abstract read
In one paragraph

Article in iScience, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

33 citing papers in PubMed.

  1. Article
  2. Review
  3. Review
  4. Article
  5. Article
  6. Modelling human brain development and disease with organoids.Nature reviews. Molecular cell biology · 2025
    Review
  7. Review
  8. Review
  9. Article
  10. Review
  11. Article
  12. Article
  13. Review
  14. Article
  15. Review
  16. Human brain organoid code of conduct.Frontiers in molecular medicine · 2023
    Article
  17. Review
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

D Kacy CullenCenter for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, 105E Hayden Hall/3320 Smith Walk, 3rd Floor, Silverstein Pavilion/3400 Spruce Street, Philadelphia, PA 19104, USA; Center for Neurotrauma, Neurodegeneration & Restoration, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA 19104, USA; Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA 19104, USA. Electronic address: dkacy@pennmedicine.upenn.edu.
Wisberty J Gordián-VélezCenter for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, 105E Hayden Hall/3320 Smith Walk, 3rd Floor, Silverstein Pavilion/3400 Spruce Street, Philadelphia, PA 19104, USA; Center for Neurotrauma, Neurodegeneration & Restoration, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA 19104, USA; Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA 19104, USA.
Laura A StruzynaCenter for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, 105E Hayden Hall/3320 Smith Walk, 3rd Floor, Silverstein Pavilion/3400 Spruce Street, Philadelphia, PA 19104, USA; Center for Neurotrauma, Neurodegeneration & Restoration, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA 19104, USA; Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA 19104, USA.
Dennis JgamadzeCenter for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, 105E Hayden Hall/3320 Smith Walk, 3rd Floor, Silverstein Pavilion/3400 Spruce Street, Philadelphia, PA 19104, USA; Center for Neurotrauma, Neurodegeneration & Restoration, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA 19104, USA.
James LimCenter for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, 105E Hayden Hall/3320 Smith Walk, 3rd Floor, Silverstein Pavilion/3400 Spruce Street, Philadelphia, PA 19104, USA; Center for Neurotrauma, Neurodegeneration & Restoration, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA 19104, USA.
Kathryn L WoffordCenter for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, 105E Hayden Hall/3320 Smith Walk, 3rd Floor, Silverstein Pavilion/3400 Spruce Street, Philadelphia, PA 19104, USA; Center for Neurotrauma, Neurodegeneration & Restoration, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA 19104, USA.
Kevin D BrowneCenter for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, 105E Hayden Hall/3320 Smith Walk, 3rd Floor, Silverstein Pavilion/3400 Spruce Street, Philadelphia, PA 19104, USA; Center for Neurotrauma, Neurodegeneration & Restoration, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA 19104, USA.
H Isaac ChenCenter for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, 105E Hayden Hall/3320 Smith Walk, 3rd Floor, Silverstein Pavilion/3400 Spruce Street, Philadelphia, PA 19104, USA; Center for Neurotrauma, Neurodegeneration & Restoration, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA 19104, USA. Electronic address: isaac.chen@uphs.upenn.edu.

Funding

Training Program in Neuroengineering and MedicineT32NS091006 · NINDS · UNIVERSITY OF PENNSYLVANIA · PI Brian Litt · 2015 to 2026
$4.1M
Biological 'Living Electrodes' Using Tissue Engineered Axonal Tracts to Probe and Modulate the Nervous SystemU01NS094340 · NINDS · UNIVERSITY OF PENNSYLVANIA · PI CULLEN, DANIEL KACY · 2015 to 2017
$2.0M
Transplantable Micro-Tissue Engineered Neural Networks to Restore the Nigrostriatal Pathway in Parkinson's DiseaseI01BX003748 · VA · PHILADELPHIA VA MEDICAL CENTER · PI CULLEN, DANIEL KACY · 2017 to 2022
–
Designing Neural Tissue Constructs that Mimic Brain-Specific ArchitectureIK2RX002013 · VA · PHILADELPHIA VA MEDICAL CENTER · PI CHEN, HAN-CHIAO ISAAC · 2016 to 2021
–
BLRD VA I01 BX003748NINDS NIH HHS T32 NS091006NINDS NIH HHS U01 NS094340RRD VA IK2 RX002013
6 · The paper itself

Abstract

Reestablishing cerebral connectivity is a critical part of restoring neuronal network integrity and brain function after trauma, stroke, and neurodegenerative diseases. Creating transplantable axon tracts in the laboratory is an unexplored strategy for overcoming the common barriers limiting axon regeneration in vivo, including growth-inhibiting factors and the limited outgrowth capacity of mature neurons in the brain. We describe the generation, phenotype, and connectivity of constrained three-dimensional human axon tracts derived from brain organoids. These centimeter-long constructs are encased in an agarose shell that permits physical manipulation and are composed of discrete cellular regions spanned by axon tracts, mirroring the separation of cerebral gray and white matter. Features of cerebral cortex also are emulated, as evidenced by the presence of neurons with different cortical layer phenotypes. This engineered neural tissue represents a first step toward potentially reconstructing brain circuits by physically replacing neuronal populations and long-range axon tracts in the brain.

Indexed as

Biological SciencesNeuroscienceTissue Engineering

Identifiers

PMID31654854
PMCPMC6820245

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.