The glial cell undergoes apoptosis in the microchaete lineage ofDrosophila

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The glial cell undergoes apoptosis in the microchaete lineage of Drosophila.

Apoptosis plays a major role in vertebrate and invertebrate development. The adult Drosophila thoracic microchaete is a mechanosensory organ whose development has been extensively studied as a model of how cell division and cell determination intermingle. This sensory organ arises from a cell lineage that produces a glial cell and four other cells that form the organ. In this study, using an in...

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Revisiting the Drosophila microchaete lineage

During animal development, cell fate diversity is generated in part by intrinsically asymmetric cell division, in which a mother cell divides to generate daughters of different developmental potential (Horvitz and Herskowitz, 1992). This process requires the coordination of two events: the mother cell must have an uneven distribution of cell-fate determinants and the mitotic spindle must be ori...

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grim promotes programmed cell death of Drosophila microchaete glial cells

The Inhibitor of apoptosis (IAP) antagonists Reaper (Rpr), Grim and Hid are central regulators of developmental apoptosis in Drosophila. Ectopic expression of each is sufficient to trigger apoptosis, and hid and rpr have been shown to be important for programmed cell death (PCD). To investigate the role for grim in PCD, a grim null mutant was generated. grim was not a key proapoptotic gene for ...

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A glial cell arises from an additional division within the mechanosensory lineage during development of the microchaete on the Drosophila notum.

We have used different cell markers to trace the development of the sensory cells of the thoracic microchaete. Our results dictate a revision in the currently accepted model for cell lineage within the mechanosensory bristle. The sensory organ progenitor divides to form two secondary progenitors: PIIa and PIIb. PIIb divides first to give rise to a tertiary progenitor-PIII and a glial cell. This...

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ژورنال

عنوان ژورنال: Development

سال: 2003

ISSN: 1477-9129,0950-1991

DOI: 10.1242/dev.00198