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Tiny feet on cells can sense defects and stall migration to heal wounds

Phys · · 589 words · By Beth Miller
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What to know about Tiny feet on cells can sense defects and stall migration to heal wounds

Researchers at Washington University in St. Louis have discovered that cells use filopodia to detect micro-injuries in the basement membrane, causing them to stall and initiate healing. The study highlights how factors such as collagen type, material stiffness, and osmolality influence this sensing mechanism and collective cell migration.

Propaganda risk 0%
Claims checked 10
Techniques found 0
Topics 0

Coverage spectrum

Coverage gap: Low Left coverage
Left0%
Center80%
Right20%

5 sources compared across this story cluster. This is an eFinder estimate from indexed source coverage, not an editorial rating.

What happened

Tiny feet on cells can sense defects and stall migration to heal wounds Gaby Clark Scientific Editor Robert Egan Senior Editor Cells travel through the body both individually and in collective groups during development, wound healing and diseases such as…

Why it matters

New research from the McKelvey School of Engineering at Washington University in St.

Common ground

Louis shows that cells can sense even the smallest defects, or micro-injuries, in the surface beneath which they travel and stall long enough to begin the healing process.

Perspective signals

No major persuasion pattern has been attached yet, so the source, headline, and evidence should carry most of the weight for readers.

Researchers at Washington University in St. Louis have discovered that cells use filopodia to detect micro-injuries in the basement membrane, causing them to stall and initiate healing. The study highlights how factors such as collagen type, material stiffness, and osmolality influence this sensing mechanism and collective cell migration.

open_in_new Read the original article: https://phys.org/news/2026-08-tiny-feet-cells-defects-stall.html

analyticsAnalysis

0%
Propaganda Score
confidence: 100%
Low risk. This article shows minimal use of propaganda techniques.

fact_checkClaims Checked

eFinder analyzed this article and checked 10 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

info Single Source 5
help Insufficient Evidence 3
cancel Disputed 1
verified Verified By Reference 1
info
Claim 1: “In cancer, the basement membrane gets degraded completely, so the cells have access to collagen type I”
SINGLE SOURCE
The claim is directly quoted from a web search result featuring 'Pathak' discussing how basement membrane degradation in cancer provides access to collagen type 1. No other independent sources corroborate this specific quote or finding.
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web search NEUTRAL — “In cancer, the basement membrane gets degraded completely, so the cells have access to collagen type 1, which is the more native tissue,” Pathak said. “In tumor invasion, you want them to notice the …
https://engineering.washu.edu/news/2026/Tiny-feet-on-cells-s…
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web search NEUTRAL — Schwann Cells and Glial Cells: Surrounding axons in peripheral nerves. This presence is crucial for separating cell compartments, regulating nutrient exchange, and providing necessary scaffolding for …
https://sdrfoundation.org/basement-membrane-occurs-between-e…
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web search NEUTRAL — These findings are interesting because type I and III collagens are both usually upregulated in any type of lung remodeling. In the normal lung, small amounts of type V collagen are expressed as very …
https://www.scielo.br/j/clin/a/tpBhmV9xDnBqfbHGhStP8Yz/?lang…
info
Claim 2: “New research from the McKelvey School of Engineering at Washington University in St. Louis shows that cells can sense even the smallest defects, or micro-injuries, in the surface beneath which they travel and stall long enough to begin the healing process.”
SINGLE SOURCE
The claim is directly supported by a web search result titled 'Tiny feet on cells sense defects, stall migration to heal wounds', which attributes the research to the McKelvey School of Engineering at Washington University in St. Louis. However, no other independent news organization or authoritative source was found to corroborate this specific finding.
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wikipedia NEUTRAL — St. Louis (officially the City of St. Louis) is an independent city in the U.S. state of Missouri. It lies near the confluence of the Mississippi and the Missouri rivers. In 2020, the city proper had …
https://en.wikipedia.org/wiki/St._Louis
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wikipedia NEUTRAL — The University of Missouri–St. Louis (UMSL) is a public research university in St. Louis County, Missouri, United States. Established in 1963, it is the newest of the four universities in the Universi…
https://en.wikipedia.org/wiki/University_of_Missouri–St._Lou…
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wikipedia NEUTRAL — Washington University in St. Louis (WashU) is a private research university in the St. Louis metropolitan area, Missouri, United States. Founded in 1853 by a group of civic leaders and named for the f…
https://en.wikipedia.org/wiki/Washington_University_in_St._L…
+ 3 more evidence sources
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Claim 3: “Their results were published July 31, 2026, in Cell Reports.”
DISPUTED
The claim states the research was published on July 31, 2026. This date is in the future relative to current real-time data. While one web search result mentions a game launch on July 31, 2026, there is no evidence of a scientific paper published on that date. This suggests a factual error or hallucination in the original text regarding the date.
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wikipedia NEUTRAL — Cell Reports is a peer-reviewed scientific journal publishing research papers across a broad range of disciplines within the life sciences. The journal was established in 2012 and is the first open ac…
https://en.wikipedia.org/wiki/Cell_Reports
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wikipedia NEUTRAL — Stem Cell Reviews and Reports is a medical journal published quarterly by Springer Science+Business Media. It covers contemporary and emerging areas in stem cells, including embryonic and adult stem c…
https://en.wikipedia.org/wiki/Stem_Cell_Reviews_and_Reports
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wikipedia NEUTRAL — The Cell is a 2000 science fiction psychological horror film directed by Tarsem Singh in his feature directorial debut, written by Mark Protosevich, and starring Jennifer Lopez, Vince Vaughn, and Vinc…
https://en.wikipedia.org/wiki/The_Cell_(film)
+ 3 more evidence sources
help
Claim 4: “The team conducted their research with human mammary epithelial cells, Madin-Darby canine kidney cells and primary zebrafish keratinocytes from fish scales.”
INSUFFICIENT EVIDENCE
No evidence was found in the provided search results regarding the specific cell lines (human mammary epithelial, Madin-Darby canine kidney, and zebrafish keratinocytes) used in the study.
info
Claim 5: “Zmuda and the team also found that the environment around the cells affects how strongly the stalling spreads, particularly how stiff the surrounding material is and how osmolar the fluid medium is, in addition to the type of collagen that is present.”
SINGLE SOURCE
The claim regarding the influence of osmolality and stiffness on stalling is supported by a quote from Pathak in a web search result, but no other independent sources confirm these specific experimental findings.
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web search NEUTRAL — “When we culture cells in the body, the fluid is not all the same,” Pathak said. “There are differences in salt, sugar and water, which has a huge effect on osmolality. This changes cell migration and…
https://engineering.washu.edu/news/2026/Tiny-feet-on-cells-s…
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web search NEUTRAL — What is the difference between measured osmolality and calculated osmolality?The Serum Osmolar Gap - It Doesn’t Really Exist! - ABG, Fluids and Electrolytes. Medicosis Perfectionalis.
https://www.youtube.com/watch?v=H4xZM-saCMU
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web search NEUTRAL — Body fluid osmolality represents one of the most highly regulated parameters of human physiology.Countercurrent multiplication involves reabsorption of solute (principally NaCl) without water from the…
https://clinicalpub.com/control-of-body-fluid-osmolality-and…
help
Claim 6: “when the filopodia sense collagen I or stiffer ECM, they kept moving over the defect”
INSUFFICIENT EVIDENCE
No evidence was found in the provided search results to support or refute the claim that cells keep moving over defects when sensing collagen I or stiffer ECM.
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Claim 7: “They created the defects in the hydrogels with laser ablation, then imaged the movement using atomic force microscopy.”
INSUFFICIENT EVIDENCE
No evidence was found in the provided search results regarding the use of laser ablation or atomic force microscopy in this specific study.
info
Claim 8: “These cells move along the ECM with tiny feet called filopodia, which are so sensitive that they can detect small defects in the basement membrane and stop for up to eight hours—but only when collagen IV was present.”
SINGLE SOURCE
The detail about filopodia detecting defects and stalling for up to 8 hours specifically in the presence of collagen IV is mentioned in the same source as claim 1. No other independent sources confirm this specific duration or condition.
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web search NEUTRAL — Search the world's information, including webpages, images, videos and more. Google has many special features to help you find exactly what you're looking for.
https://www.google.com.br/
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web search NEUTRAL — Search the world's information, including webpages, images, videos and more. Google has many special features to help you find exactly what you're looking for.
https://www.google.com/
travel_explore
web search NEUTRAL — Disponibilizado pelo Google em: English Publicidade Sobre o Google Google.com in English
https://www.google.com/?hl=pt-br
verified
Claim 9: “Groups of cells travel along the extracellular matrix (ECM), which has a basement membrane, a protective layer made from collagen IV that acts as a tissue barrier for organs, and the interstitial matrix, which is made of collagen I and sits below the basement membrane.”
VERIFIED BY REFERENCE
General biological knowledge and web search results confirm that the ECM consists of a basement membrane (which contains collagen IV) and an interstitial matrix (which contains collagen I).
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web search NEUTRAL — The extracellular matrix (ECM) is a highly dynamic structure that is present in all tissues and continuously undergoes controlled remodelling. This process involves quantitative and qualitative change…
https://pmc.ncbi.nlm.nih.gov/articles/PMC4316204/
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web search NEUTRAL — (2) Basement membrane anchors to interstitial matrix through a variety of collagen fibrils, including collagens VI and VII. The former interacts with collagen IV and perlecan, whereas the latter with …
https://www.researchgate.net/figure/Schematic-representation…
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web search NEUTRAL — The extracellular matrix (ECM) is composed of fibrillary (fibrillar collagen) and non-fibrillary components (basement membrane, proteoglycans and glycoproteins), which all have structural and signaling f…
https://www.spandidos-publications.com/10.3892/etm.2022.1112…
info
Claim 10: “Amit Pathak, professor of mechanical engineering & materials science, and members of his lab, including Hannah Zmuda... found that the tiny feet on the leading edge of a group of cells can sense a defect of only a few microns in a membrane below the surface of the extracellular matrix”
SINGLE SOURCE
A web search result confirms that filopodia at the leading edge of migrating cell groups detect micron-scale basement-membrane defects containing collagen IV and induce stalling. While this matches the claim, it appears to stem from the same research report as claim 0, with no independent corroboration.
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web search NEUTRAL — Filopodia at the leading edge of migrating cell groups detect micron-scale basement-membrane defects containing collagen IV and induce stalling for up to 8 hours, enabling matrix repair.
https://phys.org/news/2026-08-tiny-feet-cells-defects-stall.…
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web search NEUTRAL — Extracellular vesicles (EVs) are tiny biological nanovesicles ranging from approximately 30–1000 nm in diameter that are released into the extracellular matrix of most cell types and in biofluids.
https://pmc.ncbi.nlm.nih.gov/articles/PMC9233731/
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web search NEUTRAL — Dynamic filopodia are present at the edges of epithelial cells and project to adjacent cells to aid in these processes. Interdigitated filopodia, which protrude from opposing cells, also help the shee…
https://www.frontiersin.org/journals/microbiology/articles/1…
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.