VEGF Signaling Pathway Knockout Cell Lines for Angiogenesis & Disease Research

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 and activated through proteolytic processing (e.g., by furin, ADAMTS3, plasmin). They mainly regulate lymphangiogenesis but can also contribute to angiogenesis

  • PlGF can form heterodimers with VEGF-A, enhancing signaling strength

The differential expression and binding properties of these ligands define the spatial and temporal specificity of VEGF signaling, ensuring precise regulation of vascular growth, stability, and function.

Downstream Signaling Mechanisms

VEGF ligands activate transmembrane receptor tyrosine kinases—especially VEGFR-2 (KDR/Flk-1)—to initiate downstream signaling cascades:

  • PI3K/AKT pathway: promotes endothelial cell survival, inhibits apoptosis, and enhances vascular stability via eNOS activation

  • MAPK/ERK pathway: drives cell proliferation and cell cycle progression, supporting vascular sprouting and expansion

  • PLCĪ³–PKC pathway: regulates calcium signaling and vascular permeability

  • Src/FAK pathway: controls cytoskeletal remodeling and cell migration

The coordinated activation of these pathways ensures tightly regulated angiogenesis under normal conditions.

VEGF Signaling in Disease

Dysregulation of VEGF signaling disrupts vascular homeostasis:

  • Overactivation promotes tumor growth, invasion, and metastasis

  • Insufficient signaling leads to impaired wound healing and ischemic diseases

Aberrant VEGF signaling is implicated in multiple diseases, including:

  • Atherosclerosis (ATH)

  • Myocardial infarction (MI)

  • Diabetic retinopathy (DR)

  • Age-related macular degeneration (AMD)

These disease contexts highlight the therapeutic potential of targeting the VEGF pathway.

Therapeutic Targeting of VEGF Pathway

Targeting VEGF signaling has become a cornerstone in oncology and ophthalmology:

  • Ligand neutralization:

· Bevacizumab (anti-VEGF-A monoclonal antibody)

· Ranibizumab and Aflibercept (VEGF-Trap) for AMD and DR

  • Receptor inhibition:

· Ramucirumab (anti-VEGFR-2 antibody)

· Multi-target tyrosine kinase inhibitors (e.g., Sorafenib, Sunitinib)

  • Emerging strategies:

· Bispecific drugs (e.g., Faricimab targeting VEGF and Ang-2)

· Combination therapies with immune checkpoint inhibitors

· PROTAC-based degradation and gene/siRNA therapies

These approaches improve drug delivery via vascular normalization and enhance synergy with chemotherapy and immunotherapy. Future trends focus on personalized therapy and multi-pathway targeting.

VEGF Knockout Cell Models for Research

Gene knockout cell models provide powerful tools to investigate VEGF signaling mechanisms across diseases and accelerate drug discovery.

EDITGENE offers a comprehensive portfolio of validated VEGF pathway knockout cell lines, supporting:

  • Angiogenesis research

  • Tumor biology studies

  • Vascular and metabolic disease modeling

Both in-stock and custom gene knockout cell models are available to ensure experimental flexibility and reproducibility.

Reference

  1. Lee, C., Kim, M. J., Kumar, A., Lee, H.-W., Yang, Y., & Kim, Y. (2025). Vascular endothelial growth factor signaling in health and disease: From molecular mechanisms to therapeutic perspectives. Signal Transduction and Targeted Therapy, 10(1), Article 170. 

  2. Shah, F. H., Nam, Y. S., Bang, J. Y., Hwang, I. S., Kim, D. H., Ki, M., & Lee, H. W. (2025). Targeting vascular endothelial growth receptor-2 (VEGFR-2): Structural biology, functional insights, and therapeutic resistance. Archives of Pharmacal Research, 48(5), 404–425. 

  3. Li, H. S., & Huang, X. G. (2025). Advances in the molecular signaling mechanisms of VEGF/VEGFR2 in fundus neovascularization disease (Review). Experimental and Therapeutic Medicine, 30, 143.

  4. Liu, Y., Li, Y., Wang, Y., Lin, C., Zhang, D., Chen, J., Ouyang, L., Wu, F., Zhang, J., & Chen, L. (2022). Recent progress on vascular endothelial growth factor receptor inhibitors with dual targeting capabilities for tumor therapy. Journal of Hematology & Oncology, 15(1), Article 89. 

Comments

Post a Comment

Popular posts from this blog

CRISPR gene editing combined with magnetocaloric activation: A new strategy to assist precision medicine in cancer

Image
In current cancer treatment, inducing tumor cell to apoptosis is a key strategy, since tumor cells gain uncontrolled proliferation ability by mechanism of inhibiting normal apoptosis. Gene editing technology, especially the CRISPR-Cas9 system, has received widespread attention due to its ability to precisely regulate the cellular functions. However, the precise control of the system in human body still faces challenges. Combined with magnetothermal therapy, its high permeability and low toxicity can be utilized to provide a new cancer treatment method by controlling the thermal effects and synergistically utilizing CRISPR-Cas9 technology. This magnetothermal - gene editing synergistic therapy demonstrates the promising therapeutic potential and provides a new strategy for precision medicine in cancer. Recently, a research paper entitled Magnetothermal activated gene editing strategy for enhanced turbine cell apoptosis, was published in Journal of Nanobiotechnology (Top of Zone 1, if: 1...
Read more

Human Whole Genome CRISPR/Cas9 Knockout Library and Human RNA Binding Protein Library

Image
  CRISPR library screening   is a powerful high-throughput method for gene analysis, leveraging the CRISPR/Cas9 system. This approach involves constructing a library containing thousands of sgRNAs, which are inserted into lentiviral vectors and used to infect target cells at a low multiplicity of infection (MOI). This ensures that each cell receives only one sgRNA, enabling accurate functional gene screening. In this article, we highlight the top three most popular libraries of the month and share key research papers to provide guidance, insights, and support for advancing your scientific studies. I. Sequential genome-wide CRISPR-Cas9 screens identify genes regulating cell-surface expression of tetraspanins Original Link: https://doi.org/10.1016/j.celrep.2023.112065 Four-transmembrane proteins belong to a superfamily of membrane proteins. They were first identified while searching for new cell surface antigens in mammalian cancer cells. Currently, 33 members of this four-trans...
Read more