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IJEB Vol.45(03) [March 2007] >

Title: Signaling molecules involved in the transition of growth to development of Dictyostelium discoideum
Authors: Mir, Hina A
Rajawat, Jyotika
Pradhan, Shalmali
Begum, Rasheedunnisa
Keywords: Dictyostelium discoideum
Signal transduction
Issue Date: Mar-2007
Publisher: CSIR
Abstract: The social amoeba Dictyostelium discoideum, a powerful paradigm provides clear insights into the regulation of growth and development. In addition to possessing complex individual cellular functions like a unicellular eukaryote, D. discoideum cells face the challenge of multicellular development. D. discoideum undergoes a relatively simple differentiation process mainly by cAMP mediated pathway. Despite this relative simplicity, the regulatory signaling pathways are as complex as those seen in metazoan development. However, the introduction of restriction-enzyme-mediated integration (REMI) technique to produce developmental gene knockouts has provided novel insights into the discovery of signaling molecules and their role in D. discoideum development. Cell cycle phase is an important aspect for differentiation of D. discoideum, as cells must reach a specific stage to enter into developmental phase and specific cell cycle regulators are involved in arresting growth phase genes and inducing the developmental genes. In this review, we present an overview of the signaling molecules involved in the regulation of growth to differentiation transition (GDT), molecular mechanism of early developmental events leading to generation of cAMP signal and components of cAMP relay system that operate in this paradigm.
Page(s): 223-236
ISSN: 0975-1009 (Online); 0019-5189 (Print)
Source:IJEB Vol.45(03) [March 2007]

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