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Articles 31 - 39 of 39
Full-Text Articles in Molecular Biology
Breast Tumour Initiating Cell Fate Is Regulated By Microenvironmental Cues From An Extracellular Matrix, Sharmistha Saha, Pang-Kuo Lo, Xinrui Duan, Hexin Chen, Qian Wang
Breast Tumour Initiating Cell Fate Is Regulated By Microenvironmental Cues From An Extracellular Matrix, Sharmistha Saha, Pang-Kuo Lo, Xinrui Duan, Hexin Chen, Qian Wang
Faculty Publications
Cancer stem cells, also known as tumour-initiating cells (TICs), are identified as highly tumorigenic population within tumours and hypothesized to be main regulators in tumour growth, metastasis and relapse. Evidence also suggests that a tumour microenvironment plays a critical role in the development and progression of cancer, by constantly modulating cell–matrix interactions. Scientists have tried to characterize and identify the TIC population but the actual combination of extracellular components in deciphering the fate of TICs has not been explored. The basic unanswered question is the phenotypic stability of this TIC population in a tissue extracellular matrix setting. The in vivo …
Discrimination Of Colon Cancer Stem Cells Using Noncanonical Amino Acid, Xinrui Duan, Honglin Li, Hexin Chen, Qian Wang
Discrimination Of Colon Cancer Stem Cells Using Noncanonical Amino Acid, Xinrui Duan, Honglin Li, Hexin Chen, Qian Wang
Faculty Publications
Cancer stem cells (CSCs) may be responsible for tumor recurrence. Metabolic labelling of newly synthesized proteins with non-canonical amino acids allows us to discriminate CSCs in mixed populations due to the quiescent nature of these cells.
A Plant Virus Substrate Induces Early Upregulation Of Bmp2 For Rapid Bone Formation, Pongkwan Sitasuwan, L. Andrew Lee, Peng Bo, Erin N. Davis, Yuan Lin, Qian Wang
A Plant Virus Substrate Induces Early Upregulation Of Bmp2 For Rapid Bone Formation, Pongkwan Sitasuwan, L. Andrew Lee, Peng Bo, Erin N. Davis, Yuan Lin, Qian Wang
Faculty Publications
Many nanoscale materials have been developed to investigate the effects on stem cell differentiations via topographical and chemical cues for applications in tissue engineering and regenerative medicine. The use of plant viruses as cell supporting substrates has been of particular interest due to the rapid induction of bone marrow derived mesenchymal stem cells (BMSCs) towards osteogenic cells. In this study, the role of Tobacco mosaic virus (TMV) and its early effects on osteoinduction with particular emphasis on the regulation of bone morphogenetic protein-2 (BMP2) was examined. We observed that the cells on the virus substrate immediately aggregated and formed bone-like …
A Microrna Imparts Robustness Against Environmental Fluctuation During Development, Xin Li, Justin J. Cassidy, Catherine A. Reinke, Stephen Fischboeck, Richard W. Carthew
A Microrna Imparts Robustness Against Environmental Fluctuation During Development, Xin Li, Justin J. Cassidy, Catherine A. Reinke, Stephen Fischboeck, Richard W. Carthew
Faculty Publications
The microRNA miR-7 is perfectly conserved from annelids to humans, and yet some of the genes that it regulates in Drosophila are not regulated in mammals. We have explored the role of lineage restricted targets, using Drosophila , in order to better understand the evolutionary significance of microRNA-target relationships. From studies of two well characterized developmental regulatory networks, we find that miR-7 functions in several interlocking feedback and feedforward loops, and propose that its role in these networks is to buffer them against perturbation. To directly demonstrate this function for miR-7, we subjected the networks to temperature fluctuation and found …
Oriented Cell Growth On Self-Assembled Bacteriophage M13 Thin Films, Jianhua Rong, L. Andrew Lee, Kai Li, Brandon Harp, Charlene M. Mello, Zhongwei Niu, Qian Wang
Oriented Cell Growth On Self-Assembled Bacteriophage M13 Thin Films, Jianhua Rong, L. Andrew Lee, Kai Li, Brandon Harp, Charlene M. Mello, Zhongwei Niu, Qian Wang
Faculty Publications
Fibrillar M13 bacteriophages were used as basic building blocks to generate thin films with aligned nanogrooves, which, upon chemical grafting with RGD peptides, guide cell alignment and orient the cell outgrowth along defined directions.
Bmp Signaling Goes Posttranscriptional In A Microrna Sort Of Way, Catherine A. Reinke, Richard W. Carthew
Bmp Signaling Goes Posttranscriptional In A Microrna Sort Of Way, Catherine A. Reinke, Richard W. Carthew
Faculty Publications
Aberrant microRNA (miRNA) expression correlates with human diseases such as cardiac disorders and cancer. Treatment of such disorders using miRNA-targeted therapeutics requires a thorough understanding of miRNA regulation in vivo. A recent paper in Nature by Davis et al. expands our understanding of miRNA biogenesis and maturation, elucidating a mechanism by which extracellular signaling directs cell differentiation via posttranscriptional regulation of miRNA expression.
Distinct Phospho-Forms Of Cortactin Differentially Regulate Actin Polymerization And Focal Adhesions, Anne E. Kruchten, Eugene W. Krueger, Yu Wang, Mark A. Mcniven
Distinct Phospho-Forms Of Cortactin Differentially Regulate Actin Polymerization And Focal Adhesions, Anne E. Kruchten, Eugene W. Krueger, Yu Wang, Mark A. Mcniven
Faculty Publications
Cortactin is an actin-binding protein that is overexpressed in many cancers and is a substrate for both tyrosine and serine/threonine kinases. Tyrosine phosphorylation of cortactin has been observed to increase cell motility and invasion in vivo, although it has been reported to have both positive and negative effects on actin polymerization in vitro. In contrast, serine phosphorylation of cortactin has been shown to stimulate actin assembly in vitro. Currently, the effects of cortactin serine phosphorylation on cell migration are unclear, and furthermore, how the distinct phospho-forms of cortactin may differentially contribute to cell migration has not been directly compared. Therefore, …
Heparin Modulates The 99-Loop Of Factor Ixa: Effects On Reactivity With Isolated Kunitz-Type Inhibitor Domains, Pierre F. Neuenschwander, Stephen R. Williamson, Armen Nalian, Kimberly J. Baker-Deadmond
Heparin Modulates The 99-Loop Of Factor Ixa: Effects On Reactivity With Isolated Kunitz-Type Inhibitor Domains, Pierre F. Neuenschwander, Stephen R. Williamson, Armen Nalian, Kimberly J. Baker-Deadmond
Faculty Publications
Reactivity of factor IXa with basic pancreatic trypsin inhibitor is enhanced by low molecular weight heparin (enoxaparin). Previous studies by us have suggested that this effect involves allosteric modulation of factor IXa. We examined the reactivity of factor IXa with several isolated Kunitz-type inhibitor domains: basic pancreatic trypsin inhibitor, the Kunitz inhibitor domain of protease Nexin-2, and the first two inhibitor domains of tissue factor pathway inhibitor. We find that enhancement of factor IXa reactivity by enoxaparin is greatest for basic pancreatic trypsin inhibitor (>10-fold), followed by the second tissue factor pathway inhibitor domain (1.7-fold) and the Kunitz inhibitor …
Rosalyn Sussman Yalow (1921-) Endocrinologist, Medical Physicist, Margaret Sylvia
Rosalyn Sussman Yalow (1921-) Endocrinologist, Medical Physicist, Margaret Sylvia
Faculty Publications
A biography of Rosalyn Yalow, Nobel Prize winner in Physiology/Medicine for the development of radioimmunoassay of peptides hormones. She was the second woman to win a Nobel Prize in Medicine and first American woman to do so.