Related Experiment Video
Updated: Sep 15, 2025
09:56
Mapping the Emergent Spatial Organization of Mammalian Cells using Micropatterns and Quantitative Imaging
Published on: April 30, 2019
6.7K
SpatioMark: quantifying the impact of spatial proximity on cell phenotype
Sourish S Iyengar1,2,3, Alex R Qin1,2,3, Nicholas Robertson2,3
1Centre for Cancer Research, Westmead Institute for Medical Research, The University of Sydney, Westmead, NSW 2145, Australia.
Bioinformatics (Oxford, England)
|July 17, 2025
Summary
SpatioMark analyzes gene expression changes linked to cell proximity in spatial biology. This framework connects cell-cell interactions to patient survival, offering insights into disease mechanisms.
Area of Science:
- Spatial biology
- Computational biology
- Biostatistics
Background:
- Advancing spatial biology research requires understanding cell-cell interactions.
- Current analytical methods focus on identifying interactions but not their downstream impacts.
Purpose of the Study:
- To develop a statistical framework for assessing gene/protein expression changes associated with cell proximity.
- To link spatial cell-cell relationships to patient survival outcomes.
- To address challenges in identifying molecular markers related to cell localization.
Main Methods:
- Introduction of SpatioMark, a statistical framework.
- Application across spatial proteomics and transcriptomics datasets.
- Development of correction strategies for artefact-induced relationships.
Main Results:
- SpatioMark simplifies the assessment of expression changes linked to spatial proximity.
- Identified spatial relationships correlate with differences in patient survival.
- Highlighted challenges and proposed solutions for analyzing cell localization effects.
Conclusions:
- SpatioMark provides a valuable tool for exploring the functional impact of spatial cell-cell interactions.
- The framework aids in understanding disease archetypes through spatial molecular profiling.
- Further research can leverage SpatioMark to uncover novel biomarkers and therapeutic targets.
Related Concept Videos
02:27Background and Environment Affect Phenotype
6.7K
Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
6.7K
02:32Position-effect Variegation
6.6K
In 1928, a German botanist Emil Heitz observed the moss nuclei with a DNA binding dye. He observed that while some chromatin regions decondense and spread out in the interphase nucleus, others do not. He termed them euchromatin and heterochromatin, respectively. He proposed that the heterochromatin regions reflect a functionally inactive state of the genome. It was later confirmed that heterochromatin is transcriptionally repressed, and euchromatin is transcriptionally active chromatin.
6.6K
01:23Overview of Cell Signaling
21.3K
Despite the protective membrane that separates a cell from the environment, cells need the ability to detect and respond to environmental changes. Additionally, cells often need to communicate with one another. Unicellular and multicellular organisms use a variety of cell signaling mechanisms to communicate with the environment.
Cells respond to many types of information, often through receptor proteins positioned on the membrane. For example, skin cells respond to and transmit touch...
Cells respond to many types of information, often through receptor proteins positioned on the membrane. For example, skin cells respond to and transmit touch...
21.3K
01:21Chemotaxis and Direction of Cell Migration
3.5K
Cells can detect chemical cues in their environment and reorganize the cytoskeleton to migrate toward them or away from them. This directional migration, called chemotaxis, is essential during embryogenesis and development, immune response, tissue repair and regeneration, and reproduction. These chemical cues can either attract or repel the cell's movement. For example, axon development is determined by a combination of chemoattractants and chemorepellents that direct the growing axon...
3.5K
01:19Contact-dependent Signaling
45.1K
Contact-dependent signaling, as the name suggests, requires that communicating cells be in direct contact with each other. This is achieved either through receptor-ligand interactions or by specialized cytoplasmic channels that allow the flow of small molecules between cells. In animal cells, channels called gap junctions facilitate contact-dependent signaling in certain tissues, whereas, plasmodesmata perform a similar function in plants.
Gap Junctions
In animal cells, gap junctions are formed...
Gap Junctions
In animal cells, gap junctions are formed...
45.1K
02:35Chromatin Position Affects Gene Expression
23.7K
Chromatin is the massive complex of DNA and proteins packaged inside the nucleus. The complexity of chromatin folding and how it is packaged inside the nucleus greatly influences access to genetic information. Generally, the nucleus' periphery is considered transcriptionally repressive, while the cell's interior is considered a transcriptionally active area.
Topologically Associated Domains (TADs)
The 3-dimensional positioning of chromatin in the nucleus influences the...
Topologically Associated Domains (TADs)
The 3-dimensional positioning of chromatin in the nucleus influences the...
23.7K