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NRAS (neuroblastoma RAS viral oncogene homolog) is one of the three members of the RAS proto-oncogene family, together with HRAS and KRAS. It encodes a small GTPase protein with a molecular weight of approximately 21 kDa, which plays a central role in transmitting signaling pathways involved in cell proliferation, differentiation, and survival. RAS family genes represent some of the most frequently mutated oncogenes in human cancers. Comprehensive analyses estimate that approximately 19% of cancer patients harbor mutations in at least one RAS gene, with KRAS mutations being the most prevalent, followed by NRAS and HRAS mutations. Compared with KRAS, NRAS mutations exhibit a more restricted distribution among specific tumor types, with particularly high frequencies observed in melanoma, multiple myeloma, and acute myeloid leukemia (AML). NRAS mutations typically result in constitutive activation of the N-Ras protein, leading to persistent activation of key downstream signaling pathways,...

Overview of the Lipoprotein Response Pathway What is the Lipoprotein Response? The Response to Lipoprotein Particle Pathway refers to the key biological processes by which cells or organisms react to stimulation by lipoprotein particles such as LDL, HDL, and VLDL (Gene Ontology term: GO:0055094). Lipoproteins are responsible for transporting lipids, including cholesterol, triglycerides, and phospholipids, through the bloodstream. Maintaining their metabolic homeostasis is essential for cellular function, energy balance, and endocrine regulation. Disruption of lipoprotein metabolism can directly lead to major metabolic diseases, including atherosclerosis, hyperlipidemia, non-alcoholic fatty liver disease (NAFLD), obesity, and type 2 diabetes. Regulatory Network of the Lipoprotein Response The Response to Lipoprotein Particle Pathway regulates multiple biological processes, including lipid uptake, inflammatory responses, cholesterol homeostasis, and innate immune signaling. When lipoprot...

KRAS is one of the most frequently mutated oncogenes in human cancers, yet different mutation subtypes (G12C, G12D, G12V, G13D, etc.) exhibit significant differences in oncogenic potential, signaling pathway preferences, and drug sensitivity. The approval of the first G12C inhibitor in 2021 ushered in a new era of precision targeting of KRAS. Understanding allele-specific functions, screening sensitive drugs, and dissecting resistance mechanisms all rely on isogenic cell models with consistent genetic backgrounds. This article systematically reviews the clinical significance and therapeutic breakthroughs of major KRAS mutation subtypes, and introduces EDITGENE’s off-the-shelf cell lines with KRAS point mutation in HCT116 and LLC, built on the Bingo™ PE7 platform .  These ready-to-ship cell lines provide academic institutes and pharmaceutical companies with ideal tools ranging from in vitro screening to in vivo efficacy evaluation. KRAS mutation spectrum: heterogeneous distribution...

  Mitochondrial autophagy, also known as mitophagy, is a selective form of autophagy that specifically removes damaged or superfluous mitochondria from cells. It plays a central role in maintaining mitochondrial quality control, reducing the accumulation of reactive oxygen species (ROS), and regulating cellular energy metabolism and homeostasis. In recent years, a growing body of research has demonstrated that dysregulation of mitophagy is closely associated with a wide range of diseases, including neurodegenerative disorders, cancer, cardiovascular diseases, and metabolic dysfunction. Therefore, systematically elucidating its molecular mechanisms and validating its functions using precise models has become a major focus of current research. Mechanisms of Mitophagy At its core, mitophagy involves the sequestration of specific mitochondria by autophagosomes, followed by their delivery to lysosomes for degradation. This process typically includes several key steps: ● Damage recogniti...

Overview of the VEGF Signaling Pathway The VEGF (Vascular Endothelial Growth Factor) signaling pathway is a key regulator of angiogenesis, playing a critical role in both physiological and pathological conditions. It promotes the orderly formation of new blood vessels by regulating endothelial cell (EC) proliferation, migration, and survival. The VEGF family consists of multiple ligands, among which VEGF-A is the most potent driver of angiogenesis. VEGF-A isoforms, generated through alternative splicing, exhibit distinct biological properties: VEGF-A165: the most abundant isoform with strong pro-angiogenic activity and heparin-binding capability VEGF-A121: highly diffusible but with relatively lower activity VEGF-A189: tightly binds to the extracellular matrix, forming localized concentration gradients VEGF-B and PlGF (Placental Growth Factor) primarily bind to VEGFR-1, contributing to metabolic regulation and pathological angiogenesis VEGF-C and VEGF-D are synthesized as precursors an...

The TP53 gene , also known as the p53 gene, is one of the most critical tumor suppressor genes in the human genome. Discovered in 1979 and recognized for its tumor-suppressive function in 1989, TP53 has since been regarded as the “guardian of the genome” and remains a central focus of cancer research. Under normal physiological conditions, the TP53 gene functions as a tightly regulated stress-response hub . The p53 protein encoded by the TP53 gene is constantly produced but also rapidly degraded. Upon DNA damage, replication stress, or metabolic imbalance, p53 becomes stabilized and activated, allowing it to orchestrate cell fate decisions. Rather than simply inducing apoptosis, p53 exerts a context-dependent regulatory role: In response to mild damage, p53 induces cell cycle arrest through transcriptional activation of targets such as p21, allowing time for DNA repair. Under moderate stress, p53 promotes DNA repair pathways and antioxidant responses. When damage is irreversible, ...

In a healthy state, cell growth, division, and death are precisely regulated. However, when key regulatory pathways malfunction, cells may escape this "command system," proliferating continuously and evading immune clearance, ultimately leading to disease—particularly tumors. As one of the world's leading malignancies, lung cancer has a complex pathogenesis rooted in the imbalance of cell growth regulatory systems. These imbalances are often genetic. For instance,  EGFR point mutations  allow the EGFR protein to activate automatically without the need for external ligand stimulation, magnifying downstream signals and leading to uncontrolled cell proliferation. EGFR is a receptor tyrosine kinase located on the cell membrane that regulates cell proliferation, differentiation, and survival across various tissues. Under normal conditions, when growth factors bind to EGFR, it triggers receptor dimerization and activates its kinase activity. This initiates a series of...