Localized glucose import, glycolytic processing, and mitochondria generate a focused ATP burst to power basement-membrane invasion.
Journal Article (Journal Article)
Invasive cells use transient, energy-consuming protrusions to breach basement membrane (BM) barriers. Using the ATP sensor PercevalHR during anchor cell (AC) invasion in Caenorhabditis elegans, we show that BM invasion is accompanied by an ATP burst from mitochondria at the invasive front. RNAi screening and visualization of a glucose biosensor identified two glucose transporters, FGT-1 and FGT-2, which bathe invasive front mitochondria with glucose and facilitate the ATP burst to form protrusions. FGT-1 localizes at high levels along the invasive membrane, while FGT-2 is adaptive, enriching most strongly during BM breaching and when FGT-1 is absent. Cytosolic glycolytic enzymes that process glucose for mitochondrial ATP production cluster with invasive front mitochondria and promote higher mitochondrial membrane potential and ATP levels. Finally, we show that UNC-6 (netrin), which polarizes invasive protrusions, also orients FGT-1. These studies reveal a robust and integrated energy acquisition, processing, and delivery network that powers BM breaching.
Full Text
Duke Authors
Cited Authors
- Garde, A; Kenny, IW; Kelley, LC; Chi, Q; Mutlu, AS; Wang, MC; Sherwood, DR
Published Date
- March 2022
Published In
Volume / Issue
- 57 / 6
Start / End Page
- 732 - 749.e7
PubMed ID
- 35316617
Pubmed Central ID
- PMC8969095
Electronic International Standard Serial Number (EISSN)
- 1878-1551
International Standard Serial Number (ISSN)
- 1534-5807
Digital Object Identifier (DOI)
- 10.1016/j.devcel.2022.02.019
Language
- eng