AI Article Synopsis
- Cells use clathrin-mediated endocytosis (CME) to internalize molecules, but previous studies indicated that it might be inefficient due to high termination rates of CME events.
- Researchers utilized genome editing and machine learning to precisely identify and analyze genuine CME sites, avoiding confounding factors of prior methods.
- Their findings revealed that authentic CME sites consistently contain both AP2 and clathrin, exhibit similar limited mobility, and are more stable over time, forming vesicles as indicated by dynamin2 recruitment.
Article Abstract
Cells internalize various molecules through clathrin-mediated endocytosis (CME). Previous live-cell imaging studies suggested that CME is inefficient, with about half of the events terminated. These CME efficiency estimates may have been confounded by overexpression of fluorescently tagged proteins and inability to filter out false CME sites. Here, we employed genome editing and machine learning to identify and analyze authentic CME sites. We examined CME dynamics in cells that express fluorescent fusions of two defining CME proteins, AP2 and clathrin. Support vector machine classifiers were built to identify and analyze authentic CME sites. From inception until disappearance, authentic CME sites contain both AP2 and clathrin, have the same degree of limited mobility, continue to accumulate AP2 and clathrin over lifetimes >∼20 s, and almost always form vesicles as assessed by dynamin2 recruitment. Sites that contain only clathrin or AP2 show distinct dynamics, suggesting they are not part of the CME pathway.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4610353 | PMC |
| http://dx.doi.org/10.1016/j.celrep.2015.08.048 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Knowing is Half the Battle: The Factors Leading to Efficient Recruitment of Representative Samples in Schizophrenia Research.
Pharmaceut Med
January 2025
New York State Psychiatric Institute, 1051 Riverside Drive, New York, NY, 10032, USA.
Background And Objectives: Drug development in schizophrenia is limited by the differential scaling of the active treatment and placebo arms of a study, such that, as the number of sites increases, the magnitude of placebo response disproportionately increases. The objective of this article was to identify factors conducive to efficient recruitment as a step towards trial designs allowing recruitment of more participants per site, leading to reduced variability, and potentially a smaller placebo effect.
Patients And Methods: Using the information of 554 individuals, we calculated the percentage of individuals who were screened, consented, and retained in our research, along with rationale for nonconsent.
LC-HRMS screening procedure for the detection of 11 different classes of prohibited substances in dried urine spots for doping control purposes.
Anal Bioanal Chem
January 2025
Doping Control Laboratory, Department of Diagnostic Sciences, Ghent University, Block B, Ottergemsesteenweg 460, BE-9000, Ghent, Belgium.
Dried urine spots have recently been proposed as an alternative matrix in the anti-doping field. Drying urine may open the opportunity to limit microbial and thermal degradation of the prohibited substances during transportation to the anti-doping laboratories without the need for refrigeration or freezing. In this study, a multi-targeted initial testing procedure was developed for the determination of 237 prohibited drugs/metabolites from 11 different classes in dried urine spots.
View Article and Find Full Text PDFAltered chromatin landscape and 3D interactions associated with primary constitutional MLH1 epimutations.
Clin Epigenetics
December 2024
Hereditary Cancer Group, ONCOBELL Program, Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), L'Hospitalet de Llobregat, Spain.
Background: Lynch syndrome (LS), characterised by an increased risk for cancer, is mainly caused by germline pathogenic variants affecting a mismatch repair gene (MLH1, MSH2, MSH6, PMS2). Occasionally, LS may be caused by constitutional MLH1 epimutation (CME) characterised by soma-wide methylation of one allele of the MLH1 promoter. Most of these are "primary" epimutations, arising de novo without any apparent underlying cis-genetic cause, and are reversible between generations.
View Article and Find Full Text PDFEndosonography in head and neck imaging and surgery.
Ultraschall Med
December 2024
Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Regensburg, Germany.
This CME article explores the evolving role of endosonography in otorhinolaryngology and head and neck surgery. Endosonography offers significant potential to improve imaging inside the upper respiratory tract, particularly with advancements in probe technology and imaging resolution. The article will describe the sonoanatomy of the oral cavity, pharynx, and larynx and the selection of probes and scanning techniques used for the various anatomical sites.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!