Evidence map›Paper›PMID 21842067›Full record

ArticleIntegrative biology : quantitative biosciences from nano to macro2011

In situ force mapping of mammary gland transformation.

Jose I Lopez, Inkyung Kang, Weon-Kyoo You, Donald M McDonald, Valerie M Weaver

Abstract read
In one paragraph

Article in Integrative biology : quantitative biosciences from nano to macro, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 170 papers.

0numbers the graph read from it
0cells of the map it votes in
170citing papers in PubMed
7.2field-weighted citation impact, top 2% of its field
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

170 citing papers in PubMed, 284 citations in OpenAlex.

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110 more citing papers are in PubMed but not listed here.

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

5 authors at 2 institutions in 1 country.

Jose I LopezDepartment of Surgery and Center for Bioengineering and Tissue Regeneration, University of California at San Francisco, 513 Parnassus Ave, HSE 565, San Francisco, CA 94143-0456, USA.
Inkyung Kang
Weon-Kyoo You
Donald M McDonald
Valerie M Weaver
University of California, San Francisco · USIn-Q-Tel · US

Funding

Tools for Analysis of Airway InflammationP01HL024136 · NHLBI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI CAUGHEY, GEORGE H · 1985 to 2014
$23.3M
UCSF IRACDA Scholars ProgramK12GM081266 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI Raymond M. Esquerra, HOLLY A. INGRAHAM · 2007 to 2026
$19.4M
TRANS-NETWORK PROJECTSU54CA143836 · NCI · UNIVERSITY OF CALIFORNIA BERKELEY · PI LIPHARDT, JAN T. · 2009 to 2014
$15.1M
Molecular and Cellular Mechanisms in CancerT32CA108462 · NCI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI GOGA, ANDREI · 2004 to 2024
$10.4M
ENDOTHELIAL PERMEABILITY IN AIRWAY ANGIOGENESISR01HL059157 · NHLBI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI MCDONALD, DONALD M · 1998 to 2015
$5.5M
Environmental Effect on the Mammary Gland across the LifespanU01ES019458 · NIEHS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI WERB, ZENA · 2010 to 2014
$2.5M
Collagen remodeling and tumor progressionR01CA138818 · NCI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI WEAVER, VALERIE MARIE · 2010 to 2014
$2.0M
NCI NIH HHS CA138818-01A1NCI NIH HHS R01 CA138818NCI NIH HHS T32 CA108462NCI NIH HHS U54 CA143836NCI NIH HHS U54CA143836-01NHLBI NIH HHS P01 HL024136NHLBI NIH HHS R01 HL059157NIEHS NIH HHS 1U01ES009458-01NIEHS NIH HHS U01 ES019458NIGMS NIH HHS K12 GM081266NIGMS NIH HHS K12GM081266
6 · The paper itself

Abstract

Tumor progression is characterized by an incremental stiffening of the tissue. The importance of tissue rigidity to cancer is appreciated, yet the contribution of specific tissue elements to tumor stiffening and their physiological significance remains unclear. We performed high-resolution atomic force microscopy indentation in live and snap-frozen fluorescently labeled mammary tissues to explore the origin of the tissue stiffening associated with mammary tumor development in PyMT mice. The tumor epithelium, the tumor-associated vasculature and the extracellular matrix all contributed to mammary gland stiffening as it transitioned from normal to invasive carcinoma. Consistent with the concept that extracellular matrix stiffness modifies cell tension, we found that isolated transformed mammary epithelial cells were intrinsically stiffer than their normal counterparts but that the malignant epithelium in situ was far stiffer than isolated breast tumor cells. Moreover, using an in situ vitrification approach, we determined that the extracellular matrix adjacent to the epithelium progressively stiffened as tissue evolved from normal through benign to an invasive state. Importantly, we also noted that there was significant mechanical heterogeneity within the transformed tissue both in the epithelium and the tumor-associated neovasculature. The vascular bed within the tumor core was substantially stiffer than the large patent vessels at the invasive front that are surrounded by the stiffest extracellular matrix. These findings clarify the contribution of individual mammary gland tissue elements to the altered biomechanical landscape of cancerous tissues and emphasize the importance of studying cancer cell evolution under conditions that preserve native interactions.

Indexed as

AnimalsBioengineeringBiomechanical PhenomenaBiophysical PhenomenaCell Transformation, NeoplasticExtracellular MatrixFemaleMammary Glands, AnimalMammary Neoplasms, ExperimentalMammary Tumor Virus, MouseMiceMice, TransgenicMicroscopy, Atomic ForceNeoplasm InvasivenessRetroviridae InfectionsTensile Strength

Identifiers

PMID21842067
PMCPMC3564969
OpenAlexW2154061152

What OpenQuestion holds

Textmetadata
LicenceTDM
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.