AI Article Synopsis
- Cell migration involves the growth of F-actin at the front of the cell, but F-actin near the membrane also creates resistance against outward growth.
- A new fluorescent reporter was developed to observe the density of membrane-proximal F-actin (MPA) during migration, revealing that MPA density is high at the back and low at the front.
- The lower density of MPA at the front allows for the formation of new membrane protrusions, which helps to maintain the cell's polarized shape during movement.
Article Abstract
Cell migration is driven by local membrane protrusion through directed polymerization of F-actin at the front. However, F-actin next to the plasma membrane also tethers the membrane and thus resists outgoing protrusions. Here, we developed a fluorescent reporter to monitor changes in the density of membrane-proximal F-actin (MPA) during membrane protrusion and cell migration. Unlike the total F-actin concentration, which was high in the front of migrating cells, MPA density was low in the front and high in the back. Back-to-front MPA density gradients were controlled by higher cofilin-mediated turnover of F-actin in the front. Furthermore, nascent membrane protrusions selectively extended outward from areas where MPA density was reduced. Thus, locally low MPA density directs local membrane protrusions and stabilizes cell polarization during cell migration.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8283920 | PMC |
| http://dx.doi.org/10.1126/science.aay7794 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Effect of age-associated oxidative stress on sperm viability, acrosomal integrity and sperm apoptosis and DNA fragmentation in Sahiwal breeding bulls.
Vet Res Commun
January 2025
ARGO, ICAR- National Dairy Research Institute, Deemed University, Karnal, India.
Sperm motility is the prime functional attribute for semen quality and fertility of the bull. However, the bull's age directly affects the semen quality, and the bull's fertility and productive life decline with age. Even though research on age has been conducted in the past, it is still unclear how old a bull should be maintained at artificial insemination centers.
View Article and Find Full Text PDFUnraveling the potential mechanism and prognostic value of pentose phosphate pathway in hepatocellular carcinoma: a comprehensive analysis integrating bulk transcriptomics and single-cell sequencing data.
Funct Integr Genomics
January 2025
Institute of Infectious Diseases, Guangdong Province, Guangzhou Eighth People's Hospital, Guangzhou Medical University, 8 Huaying Road, Baiyun District, Guangzhou, 510440, China.
Hepatocellular carcinoma (HCC) remains a malignant and life-threatening tumor with an extremely poor prognosis, posing a significant global health challenge. Despite the continuous emergence of novel therapeutic agents, patients exhibit substantial heterogeneity in their responses to anti-tumor drugs and overall prognosis. The pentose phosphate pathway (PPP) is highly activated in various tumor cells and plays a pivotal role in tumor metabolic reprogramming.
View Article and Find Full Text PDFSilencing of FZD7 Inhibits Endometriotic Cell Viability, Migration, and Angiogenesis by Promoting Ferroptosis.
Cell Biochem Biophys
January 2025
Department of Obstetrics and Gynecology, Lishui Municipal Central Hospital, Lishui, Zhejiang, 323000, China.
Background: Endometriosis (EMS) is a difficult gynecological disease to cure. Frizzled-7 (FZD7) has been shown to be associated with the development of EMS, but its specific mechanism remains unclarified. This study aims to explore the role of FZD7 in EMS.
View Article and Find Full Text PDFSophaline B inhibits non-small cell lung cancer by activating NLRP3/caspase-1/GSDMD-dependent pyroptosis and PI3K/AKT/mTOR-mediated autophagy.
Nat Prod Res
January 2025
Institute of Biopharmaceutical and Health Engineering, State Key Laboratory of Chemical Oncogenomics, Shenzhen Key Laboratory of Gene and Antibody Therapy, Shenzhen International Graduate School, Tsinghua University, Shenzhen, Guangdong, China.
Sophaline B (SPB), extracted from the seeds of L., is a natural bioactive compound that effectively exerts antiviral activities against the hepatitis B virus. This is the first study to demonstrate that SPB exerts anti-tumor effects on NSCLC by inducing pyroptosis and autophagy.
View Article and Find Full Text PDFElectroactive Asymmetric Dressing for Spatiotemporal Deep Burn Scarless Healing and Management.
Adv Healthc Mater
January 2025
Department of Biomedical Engineering, City University of Hong Kong, Hong Kong, 999077, China.
Burn care and treatment differ markedly from other types of wounds, as they are significantly more prone to infections and struggle to maintain fluid balance post-burn. Moreover, the limited self-healing abilities exacerbate the likelihood of scar formation, further complicating the recovery process. To tackle these issues, an asymmetric wound dressing comprising a quercetin-loaded poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (P34HB@Qu) hydrophilic layer and a zinc oxide nanoparticle-loaded, thermally treated polyvinylidene fluoride (HPVDF@ZnO) hydrophobic layer is designed.
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!