Molecular Basis of Prostate-Specific Androgen-Independent Expression of a Homeobox Gene

2001 ◽  
Author(s):  
Charles J. Bieberich
Keyword(s):  
Molecular Basis ◽  
Homeobox Gene ◽  
Androgen Independent

Gli2 functions in FGF signaling during antero-posterior patterning

Development ◽  
2000 ◽  
Vol 127 (20) ◽  
pp. 4395-4405 ◽  
Author(s):  
R. Brewster ◽  
J.L. Mullor ◽  
A. Ruiz i Altaba
Keyword(s):  
Transcription Factors ◽  
Zinc Finger ◽  
Molecular Basis ◽  
Homeobox Gene ◽  
Fgf Signaling ◽  
Homeodomain Proteins ◽  
Cell Fates ◽  
Critical Determinant ◽  
Gli Proteins ◽  
Regulatory Loop

Patterning along the anteroposterior (A-P) axis involves the interplay of secreted and transcription factors that specify cell fates in the mesoderm and neuroectoderm. While FGF and homeodomain proteins have been shown to play different roles in posterior specification, the network coordinating their effects remains elusive. Here we have analyzed the function of Gli zinc-finger proteins in mesodermal A-P patterning. We find that Gli2 is sufficient to induce ventroposterior development, functioning in the FGF-brachyury regulatory loop. Gli2 directly induces brachyury, a gene required and sufficient for mesodermal development, and Gli2 is in turn induced by FGF signaling. Moreover, the homeobox gene Xhox3, a critical determinant of posterior development, is also directly regulated by Gli2. Gli3, but not Gli1, has an activity similar to that of Gli2 and is expressed in ventroposterior mesoderm after Gli2. These findings uncover a novel function of Gli proteins, previously only known to mediate hedgehog signals, in the maintenance and patterning of the embryonic mesoderm. More generally, our results suggest a molecular basis for an integration of FGF and hedgehog inputs in Gli-expressing cells that respond to these signals.

Renilla Bioluminescence: A Morphologic Approach to the Location of Photocytes

1974 ◽  
Vol 32 ◽  
pp. 208-209
Author(s):  
Ben O. Spurlock ◽  
Milton J. Cormier
Keyword(s):  
Excited State ◽  
Ground State ◽  
Molecular Basis ◽  
Light Emission ◽  
Chemical Basis ◽  
Electronic Excited State ◽  
Colonial Form ◽  
The Common ◽  
Eighteenth And Nineteenth Centuries ◽  
Catalyzed Oxidation

The phenomenon of bioluminescence has fascinated layman and scientist alike for many centuries. During the eighteenth and nineteenth centuries a number of observations were reported on the physiology of bioluminescence in Renilla, the common sea pansy. More recently biochemists have directed their attention to the molecular basis of luminosity in this colonial form. These studies have centered primarily on defining the chemical basis for bioluminescence and its control. It is now established that bioluminescence in Renilla arises due to the luciferase-catalyzed oxidation of luciferin. This results in the creation of a product (oxyluciferin) in an electronic excited state. The transition of oxyluciferin from its excited state to the ground state leads to light emission.

Androgen-induced plasticity at a “vocal” neuromuscular synapse

1994 ◽  
Vol 52 ◽  
pp. 32-33
Author(s):  
Darcy B. Kelley ◽  
Martha L. Tobias ◽  
Mark Ellisman
Keyword(s):  
Xenopus Laevis ◽  
Motor Neurons ◽  
Sexual Differentiation ◽  
Molecular Basis ◽  
Neuromuscular Synapse ◽  
Sexually Dimorphic ◽  
Intracellular Protein ◽  
Developmental Program ◽  
Androgen Action ◽  
Clawed Frog

Brain and muscle are sexually differentiated tissues in which masculinization is controlled by the secretion of androgens from the testes. Sensitivity to androgen is conferred by the expression of an intracellular protein, the androgen receptor. A central problem of sexual differentiation is thus to understand the cellular and molecular basis of androgen action. We do not understand how hormone occupancy of a receptor translates into an alteration in the developmental program of the target cell. Our studies on sexual differentiation of brain and muscle in Xenopus laevis are designed to explore the molecular basis of androgen induced sexual differentiation by examining how this hormone controls the masculinization of brain and muscle targets.Our approach to this problem has focused on a highly androgen sensitive, sexually dimorphic neuromuscular system: laryngeal muscles and motor neurons of the clawed frog, Xenopus laevis. We have been studying sex differences at a synapse, the laryngeal neuromuscular junction, which mediates sexually dimorphic vocal behavior in Xenopus laevis frogs.

A molecular basis for opiate action

1998 ◽  
Vol 33 ◽  
pp. 65-77 ◽  
Author(s):  
Dominique Massotte ◽  
Brigitte L. Kieffer
Keyword(s):  
Molecular Basis

150: Inhibition of Tumor Progression Using Antisense Oligonucleotide Targeting GLI2 in Androgen Independent Prostate Cancer

2007 ◽  
Vol 177 (4S) ◽  
pp. 51-51
Author(s):  
Shintaro Narita ◽  
Alan I. So ◽  
Shannon Sinnemann ◽  
Ladan Fazli ◽  
Eric G. Marcusson ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Tumor Progression ◽  
Antisense Oligonucleotide ◽  
Androgen Independent

463: Telomerase Inhibition Prevents Androgen Independent Osseous Prostate Cancer Progression

2005 ◽  
Vol 173 (4S) ◽  
pp. 126-127
Author(s):  
Yingming Li ◽  
Melissa Thompson ◽  
Zhu Chen ◽  
Bahaa S. Malaeb ◽  
David Corey ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Cancer Progression ◽  
Prostate Cancer Progression ◽  
Telomerase Inhibition ◽  
Androgen Independent

1140: Prognostic Nomogram for Disease-Specific Survival of Patients with Untreated Androgen Independent Prostate Cancer

2005 ◽  
Vol 173 (4S) ◽  
pp. 310-310
Author(s):  
Robert S. Svatek ◽  
Pierre I. Karakiewicz ◽  
Michael J. Shulman ◽  
Jose Karam ◽  
Paul Perrotte ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Disease Specific Survival ◽  
Disease Specific ◽  
Androgen Independent
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