Category: Lab Notes: Cell Biology
Epithelial Sodium Channels (ENaC)
Epithelial sodium channels (ENaC) are specialized ion channels located in epithelial tissues that mediate sodium reabsorption across cell membranes. These…
Sodium Channel
Sodium channels are specialized membrane proteins that form selective pores for sodium ion (Na+) movement across cell membranes. These channels…
Chloride Channel
Chloride channels are integral membrane proteins that form pores allowing chloride ions (Cl-) to move across biological membranes. These channels…
Potassium Channel
Potassium (K⁺) channels are a diverse and vital group of transmembrane proteins that enable the selective flow of potassium ions…
Voltage-Gated Calcium Channel
Voltage-gated calcium channels (VGCCs) are a family of transmembrane proteins that mediate the influx of calcium ions (Ca²⁺) into cells…
Calcium Channel
Calcium channels are specialized transmembrane proteins that facilitate the movement of calcium ions (Ca²⁺) across cellular membranes, primarily the plasma…
Ion Channel
Ion channels are specialized transmembrane proteins that allow the selective passage of ions—such as sodium (Na⁺), potassium (K⁺), calcium (Ca²⁺),…
Cellular Senescence and Aging
Cellular senescence is a fundamental biological process that plays a central role in aging and age-related diseases. It refers to…
Cellular Senescence in Neurodegenerative Diseases
Cellular senescence has emerged as a significant contributor to the pathogenesis of neurodegenerative diseases, including Alzheimer’s disease (AD), Parkinson’s disease…
Senescence-Associated Heterochromatin Foci (SAHF)
Senescence-associated heterochromatin foci (SAHF) are distinct, densely packed regions of chromatin that form in the nuclei of cells undergoing cellular…
Senescence
Senescence is a state of stable and generally irreversible cell cycle arrest that occurs when cells experience certain types of…
Stress-Induced Senescence Vs Replicative Senescence
Criteria Stress-Induced Senescence Replicative Senescence Remarks Definition A premature, irreversible growth arrest triggered by cellular stressors A state of permanent…
Replicative Senescence
Replicative senescence is a fundamental biological process in which normal somatic cells permanently stop dividing after a finite number of…
Stress-Induced Senescence
Stress-induced senescence is a cellular process in which cells enter a permanent state of growth arrest in response to various…
Telomere Shortening
Shortening of telomeres is a natural biological process that occurs during each cell division and is closely linked to cellular…