ArticlePLoS biology2012
Two PI 3-kinases and one PI 3-phosphatase together establish the cyclic waves of phagosomal PtdIns(3)P critical for the degradation of apoptotic cells.
Article in PLoS biology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
45 citing papers in PubMed, 73 citations in OpenAlex.
- PIKI-1, a class II PI 3-kinase, functions in endocytic trafficking.PLoS genetics · 2026Article
- PIKI-1, a class II phosphatidylinositol 3-kinase, functions in endocytic trafficking.bioRxiv : the preprint server for biology · 2025Article
- Roles of class III phosphatidylinositol 3-kinase, Vps34, in phagocytosis, autophagy, and endocytosis in retinal pigmented epithelium.iScience · 2025Article
- A conserved requirement for RME-8/DNAJC13 in neuronal autophagic lysosome reformation.Autophagy · 2024Article
- Review
- LC3-associated phagocytosis promotes glial degradation of axon debris after injury in Drosophila models.Nature communications · 2023Article
- Large vesicle extrusions fromeLife · 2023Article
- Beyond autophagy: LC3-associated phagocytosis and endocytosis.Science advances · 2022Review
- Sesquiterpene Lactones as Promising Candidates for Cancer Therapy: Focus on Pancreatic Cancer.Molecules (Basel, Switzerland) · 2022Review
- Article
- The small GTPase RAB-35 facilitates the initiation of phagosome maturation and acts as a robustness factor for apoptotic cell clearance.Small GTPases · 2021Article
- Class II phosphatidylinositol 3-kinase isoforms in vesicular trafficking.Biochemical Society transactions · 2021Review
- Worms, Fat, and Death:Metabolites · 2021Review
- An RNAi screen of the kinome in epithelial follicle cells of the Drosophila melanogaster ovary reveals genes required for proper germline death and clearance.G3 (Bethesda, Md.) · 2021Article
- The myotubularin MTMR4 regulates phagosomal phosphatidylinositol 3-phosphate turnover and phagocytosis.The Journal of biological chemistry · 2019Article
- The nucleoside diphosphate kinase NDK-1/NME1 promotes phagocytosis in concert with DYN-1/Dynamin.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2019Article
- Class II PI3Ks at the Intersection between Signal Transduction and Membrane Trafficking.Biomolecules · 2019Review
- Autophagy in C. elegans development.Developmental biology · 2019Review
- Multiple Aspects of PIP2 Involvement inInternational journal of molecular sciences · 2018Article
- A Phosphatidylinositol 3-Kinase Effector Alters Phagosomal Maturation to Promote Intracellular Growth of Francisella.Cell host & microbe · 2018Article
Corrections and comments
- Commented on by
Authors and funding
6 authors at 2 institutions in 2 countries.
Funding
Abstract
Phosphatidylinositol 3-phosphate (PtdIns(3)P) is a signaling molecule important for many membrane trafficking events, including phagosome maturation. The level of PtdIns(3)P on phagosomes oscillates in two waves during phagosome maturation. However, the physiological significance of such oscillation remains unknown. Currently, the Class III PI 3-kinase (PI3K) Vps34 is regarded as the only kinase that produces PtdIns(3)P in phagosomal membranes. We report here that, in the nematode C. elegans, the Class II PI3K PIKI-1 plays a novel and crucial role in producing phagosomal PtdIns(3)P. PIKI-1 is recruited to extending pseudopods and nascent phagosomes prior to the appearance of PtdIns(3)P in a manner dependent on the large GTPase dynamin (DYN-1). PIKI-1 and VPS-34 act in sequence to provide overlapping pools of PtdIns(3)P on phagosomes. Inactivating both piki-1 and vps-34 completely abolishes the production of phagosomal PtdIns(3)P and disables phagosomes from recruiting multiple essential maturation factors, resulting in a complete arrest of apoptotic-cell degradation. We have further identified MTM-1, a PI 3-phosphatase that antagonizes the activities of PIKI-1 and VPS-34 by down-regulating PtdIns(3)P on phagosomes. Remarkably, persistent appearance of phagosomal PtdIns(3)P, as a result of inactivating mtm-1, blocks phagosome maturation. Our findings demonstrate that the proper oscillation pattern of PtdIns(3)P on phagosomes, programmed by the coordinated activities of two PI3Ks and one PI 3-phosphatase, is critical for phagosome maturation. They further shed light on how the temporally controlled reversible phosphorylation of phosphoinositides regulates the progression of multi-step cellular events.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.