Journal ArticleThe Journal of cell biology · October 2024
To breach the basement membrane, cells in development and cancer use large, transient, specialized lipid-rich membrane protrusions. Using live imaging, endogenous protein tagging, and cell-specific RNAi during Caenorhabditis elegans anchor cell (AC) invasi ...
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Journal ArticleThe Journal of cell biology · July 2024
Recent studies with fluorophore-tagged basement membrane (BM) components have led to remarkable discoveries about BMs but also inconsistent interpretations. Here, we review types of BM dynamics, discuss how we conduct and interpret fluorophore-tagged BM st ...
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Journal ArticleSeminars in cell & developmental biology · February 2024
Cell invasion through basement membrane barriers is crucial during many developmental processes and in immune surveillance. Dysregulation of invasion also drives the pathology of numerous human diseases, such as metastasis and inflammatory disorders. Cell ...
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Journal ArticleBMC biology · November 2023
BackgroundDiets high in saturated fat and sugar, termed "Western diets," have been associated with several negative health outcomes, including increased risk for neurodegenerative disease. Parkinson's disease (PD) is the second most prevalent neur ...
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Journal ArticleeLife · July 5, 2023
Separate tissues connect through adjoining basement membranes to carry out molecular barrier, exchange, and organ support functions. Cell adhesion at these connections must be robust and balanced to withstand independent tissue movement. Yet, how c ...
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Journal ArticleDevelopment (Cambridge, England) · May 2023
Cell invasion through basement membrane (BM) barriers is important in development, immune function and cancer progression. As invasion through BM is often stochastic, capturing gene expression profiles of actively invading cells in vivo remains elusive. Us ...
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Journal ArticleThe Journal of cell biology · January 2023
Basement membrane (BM) matrices surround and separate most tissues. However, through poorly understood mechanisms, BMs of adjacent tissue can also stably link to support organ structure and function. Using endogenous knock-in fluorescent proteins, conditio ...
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Journal Article · 2023
Many developmental and physiological processes require cells to invade and migrate through extracellular matrix barriers. This specialized cellular behavior is also misregulated in many diseases, such as immune disorders and cancer. Cell invasive activity ...
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Journal ArticleF1000Research · January 2023
Many developmental and physiological processes require cells to invade and migrate through extracellular matrix barriers. This specialized cellular behavior is also misregulated in many diseases, such as immune disorders and cancer. Cell invasive activity ...
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Journal ArticleSTAR protocols · June 2022
Measuring ATP levels within the cytosol of living cells in animals is important to understand how cellular activities are energetically supported, but is challenging because of tissue complexity and ATP sensor limitations. In this protocol, we describe how ...
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Journal ArticleScience advances · May 2022
Basement membranes (BMs) are ubiquitous extracellular matrices whose composition remains elusive, limiting our understanding of BM regulation and function. By developing a bioinformatic and in vivo discovery pipeline, we define a network of 222 human prote ...
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Journal ArticleDevelopmental cell · March 2022
Invasive cells use transient, energy-consuming protrusions to breach basement membrane (BM) barriers. Using the ATP sensor PercevalHR during anchor cell (AC) invasion in Caenorhabditis elegans, we show that BM invasion is accompanied by an ATP burst from m ...
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Journal ArticleFrontiers in cell and developmental biology · January 2022
Light sheet fluorescence microscopy (LSFM) has become a method of choice for live imaging because of its fast acquisition and reduced photobleaching and phototoxicity. Despite the strengths and growing availability of LSFM systems, no generalized LSFM moun ...
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Journal ArticleCurrent opinion in cell biology · October 2021
Basement membranes (BMs) are thin, dense forms of extracellular matrix that underlie or surround most animal tissues. BMs are enormously complex and harbor numerous proteins that provide essential signaling, mechanical, and barrier support for tissues duri ...
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Journal ArticleTrends in cell biology · June 2021
Featured Publication
Cell invasion through extracellular matrix (ECM) has pivotal roles in cell dispersal during development, immune cell trafficking, and cancer metastasis. Many elegant studies have revealed the specialized cellular protrusions, proteases, and distinct modes ...
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Journal Article · 2021
Basement membrane (BM) matrices surround and separate most tissues. However, through poorly understood mechanisms, BMs of adjacent tissues can also stably link to support organ structure and function. Using endogenous knock-in fluorescent proteins, conditi ...
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Journal ArticleDevelopmental cell · July 2020
Basement membranes (BMs) are supramolecular matrices built on laminin and type IV collagen networks that provide structural and signaling support to tissues. BM complexity, however, has hindered an understanding of its formation, dynamics, and regulation. ...
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Journal ArticleeLife · July 2020
Stem cells reside in and rely upon their niche to maintain stemness but must balance self-renewal with the production of daughters that leave the niche to differentiate. We discovered a mechanism of stem cell niche exit in the canonical C. elegans d ...
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Journal ArticleDevelopmental dynamics : an official publication of the American Association of Anatomists · June 2020
BackgroundHemicentins (HMCNs) are a family of extracellular matrix proteins first identified in Caenorhabditis elegans, with two orthologs (HMCN1 and 2) in vertebrates. In worms, HMCN is deposited at specific sites where it forms long, fine tracks ...
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Journal ArticleEuropean journal of cell biology · December 2019
Mesencephalic astrocyte-derived neurotrophic factor (MANF) is the only human neurotrophic factor with an evolutionarily-conserved C. elegans homolog, Y54G2A.23 or manf-1. MANF is a small, soluble, endoplasmic-reticulum (ER)-resident protein that is secrete ...
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Journal ArticleThe Journal of cell biology · September 2019
Basement membranes (BMs) are cell-associated extracellular matrices that support tissue integrity, signaling, and barrier properties. Type IV collagen is critical for BM function, yet how it is directed into BMs in vivo is unclear. Through live-cell imagin ...
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Journal ArticleCurrent biology : CB · March 2019
Niche cell enwrapment of stem cells and their differentiating progeny is common and provides a specialized signaling and protective environment. Elucidating the mechanisms underlying enwrapment behavior has important basic and clinical significance in not ...
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Journal ArticleDevelopmental cell · February 2019
Matrix metalloproteinases (MMPs) are associated with decreased patient prognosis but have failed as anti-invasive drug targets despite promoting cancer cell invasion. Through time-lapse imaging, optical highlighting, and combined genetic removal of the fiv ...
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Journal ArticleMatrix biology : journal of the International Society for Matrix Biology · January 2019
Basement membranes (BMs) are thin dense sheets of extracellular matrix that surround most tissues. When the BMs of neighboring tissues come into contact, they usually slide along one another and act to separate tissues and organs into distinct compartments ...
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Journal ArticleJournal of microbiology & biology education · January 2019
Genome editing with CRISPR/Cas9 technology has advanced from the lab bench to clinical application with multiple trials underway. This article introduces a course-based undergraduate experience (CURE) combining CRISPR/Cas9 genome editing (using a modified ...
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Journal ArticleAmerican journal of physiology. Cell physiology · December 2018
Starvation significantly alters cellular physiology, and signs of aging have been reported to occur during starvation. Mitochondria are essential to the regulation of cellular energetics and aging. We sought to determine whether mitochondria exhibit signs ...
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Journal ArticleProceedings of the National Academy of Sciences of the United States of America · November 2018
During invasion, cells breach basement membrane (BM) barriers with actin-rich protrusions. It remains unclear, however, whether actin polymerization applies pushing forces to help break through BM, or whether actin filaments play a passive role as scaffold ...
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Journal ArticleScientific reports · May 2018
Exercise and caloric restriction improve health, including reducing risk of cardiovascular disease, neurological disease, and cancer. However, molecular mechanisms underlying these protections are poorly understood, partly due to the cost and time investme ...
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Journal ArticleGenetics · January 2018
Highly regulated cell migration events are crucial during animal tissue formation and the trafficking of cells to sites of infection and injury. Misregulation of cell movement underlies numerous human diseases, including cancer. Although originally studied ...
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Journal ArticleDevelopmental cell · November 2017
Invasive cells use small invadopodia to breach basement membrane (BM), a dense matrix that encases tissues. Following the breach, a large protrusion forms to clear a path for tissue entry by poorly understood mechanisms. Using RNAi screening for defects in ...
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Journal ArticleNature protocols · October 2017
Cell invasion through basement membrane (BM) barriers is crucial in development, leukocyte trafficking and the spread of cancer. The mechanisms that direct invasion, despite their importance in normal and disease states, are poorly understood, largely beca ...
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Journal ArticleDevelopmental biology · September 2017
Many stem cell niches contain support cells that increase contact with stem cells by enwrapping them in cellular processes. One example is the germ stem cell niche in C. elegans, which is composed of a single niche cell termed the distal tip cell (DTC) tha ...
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Journal ArticleCurrent biology : CB · September 2017
Organ sculpting requires directed physical force generation. Force imbalances are primarily thought to arise from within cells. A new study, however, demonstrates that an extracellular-matrix-based stiffness gradient in the Drosophila egg chamber instructs ...
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Journal ArticleCurrent biology : CB · March 2017
Basement membranes (BMs) are thin, dense sheets of specialized, self-assembled extracellular matrix that surround most animal tissues (Figure 1, top). The emergence of BMs coincided with the origin of multicellularity in animals, suggesting that they were ...
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Chapter · January 1, 2017
Metastasis is initiated in epithelial-derived tumors when cells at the tumor front breach the epithelial basement membrane (BM). Invasion through BMs is thought to be one of the most rate-limiting steps in cancer progression and thus is a therapeutically a ...
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Journal ArticleEuropean journal of cell biology · November 2016
Invadopodia are F-actin-rich membrane protrusions that breach basement membrane barriers during cell invasion. Since their discovery more than 30 years ago, invadopodia have been extensively investigated in cancer cells in vitro, where great advances in un ...
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Journal ArticleNanotoxicology · September 2016
We used the nematode Caenorhabditis elegans to study the roles of endocytosis and lysosomal function in uptake and subsequent toxicity of silver nanoparticles (AgNP) in vivo. To focus on AgNP uptake and effects rather than silver ion (AgNO3) effects, we us ...
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Journal ArticleeLife · September 2016
Epithelial cells and their underlying basement membranes (BMs) slide along each other to renew epithelia, shape organs, and enlarge BM openings. How BM sliding is controlled, however, is poorly understood. Using genetic and live cell imaging approaches dur ...
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Journal ArticleDevelopmental cell · July 2016
In this issue of Developmental Cell, Isabella and Horne-Badovinac (2016) show that Rab10 directs site-specific secretion of basement membrane components, which assemble into fibrils that spool out to elongate the Drosophila egg chamber. These findings esta ...
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Journal ArticlePLoS genetics · February 2016
Overexpression of SPARC, a collagen-binding glycoprotein, is strongly associated with tumor invasion through extracellular matrix in many aggressive cancers. SPARC regulates numerous cellular processes including integrin-mediated cell adhesion, cell signal ...
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Journal ArticlePLoS genetics · January 2016
Invadopodia are specialized membrane protrusions composed of F-actin, actin regulators, signaling proteins, and a dynamically trafficked invadopodial membrane that drive cell invasion through basement membrane (BM) barriers in development and cancer. Due t ...
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Journal ArticleDevelopmental cell · October 2015
Despite critical roles in development and cancer, the mechanisms that specify invasive cellular behavior are poorly understood. Through a screen of transcription factors in Caenorhabditis elegans, we identified G1 cell-cycle arrest as a precisely regulated ...
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Journal ArticleThe Journal of cell biology · August 2015
A major gap in our understanding of cell biology is how cells generate and interact with their surrounding extracellular matrix. Studying this problem during development has been particularly fruitful. Recent work on the basement membrane in developmental ...
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Journal ArticleeLife · June 2015
Precise patterning of dendritic fields is essential for the formation and function of neuronal circuits. During development, dendrites acquire their morphology by exuberant branching. How neurons cope with the increased load of protein production required ...
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Journal ArticleJournal of cell science · May 2015
Basement membranes are a dense, sheet-like form of extracellular matrix (ECM) that underlie epithelia and endothelia, and surround muscle, fat and Schwann cells. Basement membranes separate tissues and protect them from mechanical stress. Although traditio ...
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Journal ArticlePLoS genetics · January 2015
Formation of elaborately branched dendrites is necessary for the proper input and connectivity of many sensory neurons. Previous studies have revealed that dendritic growth relies heavily on ER-to-Golgi transport, Golgi outposts and endocytic recycling. Ho ...
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Journal ArticleCurrent topics in membranes · January 2015
The nematode worm Caenorhabditis elegans has all the major basement membrane proteins found in vertebrates, usually with a smaller gene family encoding each component. With its powerful forward genetics, optical clarity, simple tissue organization, and the ...
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Journal ArticleDevelopment (Cambridge, England) · December 2014
The capability to conditionally inactivate gene function is essential for understanding the molecular basis of development. In gene and mRNA targeting approaches, protein products can perdure, complicating genetic analysis. Current methods for selective pr ...
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Journal ArticleDevelopmental cell · November 2014
Basement membrane (BM), a sheet-like form of extracellular matrix, surrounds most tissues. During organogenesis, specific adhesions between adjoining tissues frequently occur; however, their molecular basis is unclear. Using live-cell imaging and electron ...
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Journal ArticleWorm · October 2014
After embryogenesis, developing organisms typically secure their own nutrients to enable further growth. The fitness of an organism depends on developing when food is abundant and slowing or stopping development during periods of scarcity. Although several ...
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Journal ArticleBiochemical and biophysical research communications · September 2014
Cell invasion through basement membrane (BM) occurs in many physiological and pathological contexts. MIG-10, the Caenorhabditis elegans Lamellipodin (Lpd), regulates diverse biological processes. Its function and regulation in cell invasive behavior remain ...
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Journal ArticleThe Journal of Cell Biology · August 25, 2014
The receptor deleted in colorectal cancer (DCC) directs dynamic polarizing activities in animals toward its extracellular ligand netrin. How DCC polarizes toward netrin is poorly understood. By performing live-cell imaging of the DCC orthologue UNC-40 duri ...
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Journal ArticlePLoS genetics · June 2014
Organisms in the wild develop with varying food availability. During periods of nutritional scarcity, development may slow or arrest until conditions improve. The ability to modulate developmental programs in response to poor nutritional conditions require ...
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Journal ArticleNature communications · June 2014
Large gaps in basement membrane (BM) occur during organ remodelling and cancer cell invasion. Whether dividing cells, which temporarily reduce their attachment to BM, influence these breaches is unknown. Here we analyse uterine-vulval attachment during dev ...
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Journal ArticleCell adhesion & migration · May 2014
Over 20 years ago, protrusive, F-actin-based membrane structures, termed invadopodia, were identified in highly metastatic cancer cell lines. Invadopodia penetrate artificial or explanted extracellular matrices in 2D culture conditions and have been hypoth ...
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Journal ArticleDevelopmental cell · April 2014
Microtubules (MTs) are cytoskeletal polymers that undergo dynamic instability, the stochastic transition between growth and shrinkage phases. MT dynamics are required for diverse cellular processes and, while intrinsic to tubulin, are highly regulated. How ...
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Journal ArticleDevelopment (Cambridge, England) · March 2014
To transmigrate basement membrane, cells must coordinate distinct signaling activities to breach and pass through this dense extracellular matrix barrier. Netrin expression and activity are strongly associated with invasion in developmental and pathologica ...
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Journal ArticleThe Journal of cell biology · March 2014
Invadopodia are protrusive, F-actin-driven membrane structures that are thought to mediate basement membrane transmigration during development and tumor dissemination. An understanding of the mechanisms regulating invadopodia has been hindered by the diffi ...
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Journal ArticleThe Journal of cell biology · February 2014
The basement membrane is a dense, highly cross-linked, sheet-like extracellular matrix that underlies all epithelia and endothelia in multicellular animals. During development, leukocyte trafficking, and metastatic disease, cells cross the basement membran ...
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Journal ArticleWorm · July 2013
Cell invasion through basement membrane is an essential part of normal development and physiology, and occurs during the pathological progression of human inflammatory diseases and cancer. F-actin-rich membrane protrusions, called invadopodia, have been hy ...
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Journal ArticleThe Journal of cell biology · June 2013
Though critical to normal development and cancer metastasis, how cells traverse basement membranes is poorly understood. A central impediment has been the challenge of visualizing invasive cell interactions with basement membrane in vivo. By developing liv ...
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Journal ArticleWiley interdisciplinary reviews. Developmental biology · January 2013
Understanding how cells move, change shape, and alter cellular behaviors to form organs, a process termed morphogenesis, is one of the great challenges of developmental biology. Formation of the Caenorhabditis elegans vulva is a powerful, simple, and exper ...
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Journal ArticleNature Cell Biology · 2012
Though critical to cancer metastasis, how cells traverse basement membrane (BM) barriers remains poorly understood. We have used time-lapse imaging during C. elegans uterine-vulval connection to capture the entire BM invasion process mediated by the uteri ...
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Journal ArticleCell · 2012
Asymmetrical localization of cellular constituents in the specific membrane domains is a critical step for many biological processes, including cell invasion through basement membrane (BM). Netrin signaling mediates the formation of a variety of specialize ...
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Journal ArticleCurrent opinion in cell biology · October 2011
Cell invasion through basement membrane (BM) is a specialized cellular behavior critical to many normal developmental events, immune surveillance, and cancer metastasis. A highly dynamic process, cell invasion involves a complex interplay between cell-intr ...
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Journal ArticleDevelopmental biology · September 2011
Cell invasion through basement membrane is a specialized cellular behavior critical for many developmental processes and leukocyte trafficking. Invasive cellular behavior is also inappropriately co-opted during cancer progression. Acquisition of an invasiv ...
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Journal ArticleNature Cell Biology · June 2011
Large gaps in basement membrane occur at sites of cell invasion and tissue remodelling in development and cancer. Though never followed directly in vivo, basement membrane dissolution or reduced synthesis have been postulated to create these gaps. Using la ...
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Journal ArticleMethods in cell biology · January 2011
With unique genetic and cell biological strengths, C. elegans has emerged as a powerful model system for studying many biological processes. These processes are typically regulated by complex genetic networks consisting of genes. Identifying those genes an ...
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Journal ArticleDevelopmental dynamics : an official publication of the American Association of Anatomists · May 2010
The Netrin family of extracellular ligands and their receptors were the first identified signaling pathway regulating axon guidance. Subsequent work across model systems has begun to reveal the interactions that take place downstream of Netrin reception to ...
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Journal ArticleScience signaling · 2010
Cell invasion through basement membranes during development, immune surveillance, and metastasis remains poorly understood. To gain further insight into this key cellular behavior, we performed an in vivo screen for regulators of cell invasion through base ...
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Journal ArticleGene expression patterns : GEP · September 2009
The gonad in Caenorhabditis elegans is an important model system for understanding complex morphogenetic processes including cellular movement, cell fusion, cell invasion and cell polarity during development. One class of signaling proteins known to be cri ...
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Journal ArticleDevelopmental cell · August 2009
Integrin expression and activity have been strongly correlated with developmental and pathological processes involving cell invasion through basement membranes. The role of integrins in mediating these invasions, however, remains unclear. Utilizing the gen ...
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Journal ArticleNature cell biology · February 2009
Despite their profound importance in the development of cancer, the extracellular cues that target cell invasion through basement membrane barriers remain poorly understood. A central obstacle has been the difficulty of studying the interactions between in ...
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Journal ArticleTrends in cell biology · May 2006
To metastasize, cancer cells must acquire the ability to breach several basement membrane barriers. Cell invasions through basement membranes also occur during normal development and immune system function, enabling organ formation and cell dispersal. The ...
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Journal ArticleCell · June 2005
Cell invasion through basement membranes is crucial during morphogenesis and cancer metastasis. Here, we genetically dissect this process during anchor-cell invasion into the vulval epithelium in C. elegans. We have identified the fos transcription factor ...
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Journal ArticleDevelopmental cell · July 2003
An understanding of cell-invasive behavior has been limited by the lack of in vivo models where this activity can be clearly visualized and manipulated. We show that a single cell in the Caenorhabditis elegans gonad, the anchor cell (AC), initiates uterine ...
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Journal ArticleMechanisms of development · December 2002
The analysis of cell fate patterning during the vulval development of Caenorhabditis elegans has relied mostly on the direct observation of cell divisions and cell movements (cell lineage analysis). However, reconstruction of the developing vulva from EM s ...
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Journal ArticleGene expression patterns : GEP · December 2002
The analysis of cell fate patterning during the vulval development of Caenorhabditis elegans has relied mostly on the direct observation of cell divisions and cell movements (cell lineage analysis). However, reconstruction of the developing vulva from EM s ...
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Journal ArticleDevelopmental biology · December 2002
The development of the reproductive system in Caenorhabditis elegans is a well-established model system for patterning and organogenesis. We report the characterization of the cog-1 gene, mutations in which cause novel phenotypes in late patterning in vulv ...
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Journal ArticleDevelopment (Cambridge, England) · June 2001
The molecular mechanisms guiding the positioning of the ectoderm-endoderm boundary along the animal-vegetal axis of the sea urchin embryo remain largely unknown. We report here a role for the sea urchin homolog of the Notch receptor, LvNotch, in mediating ...
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Journal ArticleDevelopment (Cambridge, England) · April 1999
Cell-cell interactions are thought to regulate the differential specification of secondary mesenchyme cells (SMCs) and endoderm in the sea urchin embryo. The molecular bases of these interactions, however, are unknown. We have previously shown that the sea ...
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Journal ArticleDevelopment (Cambridge, England) · September 1997
The specifications of cell types and germ-layers that arise from the vegetal plate of the sea urchin embryo are thought to be regulated by cell-cell interactions, the molecular basis of which are unknown. The Notch intercellular signaling pathway mediates ...
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Journal ArticleTheriogenology · January 1, 1995
The sea urchin embryo follows a relatively simple cell behavioral sequence in its gastrulation movements. The embryo reaches the gastrula stage as a spherical monolayer of cells. To form the mesoderm, primary mesenchyme cells ingress by delaminating from t ...
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