Reference Report

Reference
Citation	Van De Bor, V., Zimniak, G., Cérézo, D., Schaub, S., Noselli, S. (2011). Asymmetric localisation of cytokine mRNA is essential for JAK/STAT activation during cell invasiveness. Development 138(7): 1383--1393. (Export to RIS)
FlyBase ID	FBrf0213214
Publication Type	Research paper
PubMed ID	21350010
PubMed Abstract	The transition from immotile epithelial cells to migrating cells occurs in all organisms during normal embryonic development, as well as during tumour metastasis. During Drosophila oogenesis, border cells (BCs) are recruited and delaminate from the follicular epithelium. This process is triggered by the polar cells (PCs), which secrete the cytokine Unpaired (Upd) and activate the JAK/STAT pathway in neighbouring cells, turning them into invasive BCs. Interestingly, either a decrease or an increase in BC number alters migration, indicating that mechanisms controlling the level of JAK/STAT signalling are crucial in this process. Here, we show that PCs have a highly stable and polarised network of microtubules along which upd transcripts are asymmetrically transported in a Dynein-dependent manner. We demonstrate that in the absence of upd mRNA localisation the ligand is no longer efficiently secreted, leading to a loss of signalling strength as well as recruitment and migration defects. These findings reveal a novel post-transcriptional regulatory mechanism of JAK/STAT signalling in the control of epithelial cell invasiveness.
DOI	10.1242/dev.056184
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Secondary IDs
Language of Publication	English
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Parent Publication
Publication Type	Journal
Abbreviation	Development
Title	Development
Publication Year	1987-
ISBN/ISSN	0950-1991
Data from Reference
Alleles (14)
	Avic\GFP^Stat92E.10X BicD^GD11974 BicD^KK100487 Dhc64C^4-19 egl^KK105186 Gl^GD1455 Khc::nod^T:Ecol\lacZ Lis-1^GD1480 os^GD1158 os^Scer\UAS.cZa Sas-4^unspecified Scer\GAL4^slbo.2.6 Scer\GAL4^upd spas^{Scer\UAS.T:Avic\GFP-EGFP}
Constructs (12)
	P{10XStat92E-GFP} P{GAL4-slbo.2.6} P{GD1158} P{GD1455} P{GD1480} P{GD11974} P{KK100487} P{KK105186} P{NZ} P{UAS-os.Z} P{UAS-spas.EGFP} P{upd-GAL4}
Genes (14)
	Avic\GFP BicD cp309 Dhc64C egl Fas3 Gl Khc::nod Lis-1 os Sas-4 Scer\GAL4 slbo spas
Natural transposons (1)
	P-element