Characterization of Fibroblast Growth Factor Receptor Type I Isoforms in Xenopus Laevis Embryonic Development PDF Download

Author: Gordon W. Nash
Publisher:
ISBN:
Category : Embryology
Languages : en
Pages : 0

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Author: Wendy Winsor
Publisher:
ISBN:
Category :
Languages : en
Pages :

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In a search for fibroblast growth factor (FGF)-regulated early response genes, four cDNA fragments were isolated via a polymerase chain reaction-based differential display procedure. The cDNA fragments represent portions of genes that were either activated or repressed in Stage 8 Xenopus laevis explants after a 30 minute treatment with lOOng/ml XFGF-2. One 498bp cDNA fragment, named Band V, represents a gene that is downregulated by FGF treatment. This gene is expressed at Stages 8, 9 and 15 in the developing Xenopus embryo. A Genbank homology search program revealed similarity of Band V to distinct regions in an alternatively spliced myocyte enhancer factor, the v-j- c region of a T-cell receptor gamma chain, a Meprin A beta-subunit precursor and a myosin I heavy chain-like protein. The three other cDNA bands isolated from the differential display were chosen due to apparent upregulation by FGF. The 449bp Band VIA/B cDNA fragment possesses regions of similarity to the reactive centre of murine serine proteinase inhibitor 2.4 and a contrapsin-related MC-7 precursor. Upregulation of Band VIA/B was not confirmed because gene expression could not be detected via PCR in Xenopus explants or throughout development. The third Band 11/12, is a 636bp cDNA fragment whose gene is only expressed at Stage 8 of the developing embryo and was upregulated by FGF-2, in a PCR reaction. A database homology search showed that Band 11/12 was similar to a hypothetical protein. A second, 190bp DNA fragment isolated from Band 12 was a portion of the c-mos protooncogene. The fourth and final cDNA Band 22 is 517bp in size and represents a previously cloned Xenopus 146kDa nuclear splicing factor (Schmidt-Zachmann et aL, 1998). This factor is expressed throughout Xenopus development, and control of Band 22 gene expression by FGF-2 could not be confirmed.

Author: Hema Artee Luchman
Publisher:
ISBN:
Category : Embryology
Languages : en
Pages : 430

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Author: Robert C. Bast, Jr.
Publisher: John Wiley & Sons
ISBN: 111900084X
Category : Medical
Languages : en
Pages : 2004

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Holland-Frei Cancer Medicine, Ninth Edition, offers a balanced view of the most current knowledge of cancer science and clinical oncology practice. This all-new edition is the consummate reference source for medical oncologists, radiation oncologists, internists, surgical oncologists, and others who treat cancer patients. A translational perspective throughout, integrating cancer biology with cancer management providing an in depth understanding of the disease An emphasis on multidisciplinary, research-driven patient care to improve outcomes and optimal use of all appropriate therapies Cutting-edge coverage of personalized cancer care, including molecular diagnostics and therapeutics Concise, readable, clinically relevant text with algorithms, guidelines and insight into the use of both conventional and novel drugs Includes free access to the Wiley Digital Edition providing search across the book, the full reference list with web links, illustrations and photographs, and post-publication updates

Author:
Publisher:
ISBN:
Category : Medicine
Languages : en
Pages : 1844

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Author: Paul T. Sharpe
Publisher: Springer Science & Business Media
ISBN: 1592592708
Category : Science
Languages : en
Pages : 752

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Most people have some interest in embryos; this probably results, in part, from their interest in understanding the biological origins of themselves and their offspring and, increasingly, concerns about how environmental change such as pollution might affect human development. Obviously, et- cal considerations preclude experimental studies of human embryos and, c- sequently, the developmental biologist has turned to other species to examine this process. Fortunately, the most significant conclusion to be drawn from the experimental embryology of the last two decades is the manner in which orthologous or closely related molecules are deployed to mediate similar - velopmental processes in both vertebrates and invertebrates. The molecular mechanisms regulating processes fundamental to most animals, such as axial patterning or axon guidance, are frequently conserved during evolution. (It is now widely believed that the differences between phyla and classes are the result of new genes, arising mostly by duplication and divergence of extant sequences, regulating the appearance of derived characters. ) Other vertebrates are obviously most likely to use the same devel- mental mechanisms as humans and, within the vertebrate subphylum, the - parent degree of conservation of developmental mechanism is considerable. It has long been recognized that particular vertebrate species offer either d- tinct advantages in investigating particular stages of development or are - pecially amenable to particular manipulations. No single animal can provide all the answers because not all types of experiments can be carried out on a single species.

Author: Maya Sieber-Blum
Publisher: World Scientific
ISBN: 9814343803
Category : Medical
Languages : en
Pages : 169

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Offers readers an understanding of the development of neural crest cells, which is crucial as many birth defects and tumours are of neural crest origin. Delving into stem cells from different locations of the body, this book explores the best possible source of such cells for the use in medical applications.

Author:
Publisher:
ISBN:
Category : Medicine
Languages : en
Pages : 1200

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Author: Eijirō Ozawa
Publisher:
ISBN:
Category : Medical
Languages : en
Pages : 474

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Researchers from various fields of muscle cell study gathered to exchange new knowledge and to show new trends in muscle sciences to the younger generation of scientists. Today, muscle research has many facets, i.e. induction of muscle from more immature tissues, control of gene expression, formation of organelles such as myofibrils, and contraction and maintenance of muscle cells. The constructive presentations and discussions presented by leading researchers in these various fields makes this book a reflection of the frontiers, and the developments in muscle science in 1990.

Author: Peter Lonai
Publisher: CRC Press
ISBN: 9783718659203
Category : Nature
Languages : en
Pages : 406

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"This book aims to provide a survey of the developmental biology of mammals--Pref.