Role of Sp1 Transcriptional Factor in Gastrointestinal Carcinogenesis

  • A. M. V. N. Prathyusha
  • Renuka Nawadkar
  • Pallaval Veera BramhachariEmail author


Sp1 protein binds to GC/GT-rich promoter elements through zinc finger motifs present at their C-terminal domains and regulates expression of multiple genes in normal tissues and tumors. Sp1 protein plays a critical role in the growth and metastasis of gastrointestinal cancers by regulating expression of cell cycle genes and VEGF. However, Sp1 is involved much in growth-related signal transduction pathways, and its overexpression has both positive and negative effects on proliferation of cells. In addition to growth control, Sp1 is intricate in apoptosis and angiogenesis; therefore, Sp1 is involved in several aspects of tumorigenesis. Consistent with a role of Sp1 in cancer, it interacts with oncogenes and tumor suppressors and alters their expression. Effects of changes in Sp1 factor are context-dependent and are paradoxical. Sp1 proteins have been recognized as an essential cancer drug target.


Sp/KLF transcriptional factors Signal transduction Tumorigenesis Apoptosis and angiogenesis 


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Copyright information

© Springer Nature Singapore Pte Ltd 2017

Authors and Affiliations

  • A. M. V. N. Prathyusha
    • 1
  • Renuka Nawadkar
    • 2
    • 3
  • Pallaval Veera Bramhachari
    • 1
    Email author
  1. 1.Department of BiotechnologyKrishna UniversityMachilipatnamIndia
  2. 2.Yashwnatrao Chavan College of ScienceKaradIndia
  3. 3.Yashwnatrao Chavan Law CollegePuneIndia

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