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Extracellular Protein Microarray Technology for High Throughput Detection of Low Affinity Receptor-Ligand Interactions

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Published on: January 7, 2019

Cripto-1: an extracellular protein - connecting the sequestered biological dots.

Malgorzata Klauzinska¹, Daniel Bertolette¹, Sudhamsh Tippireddy¹

¹a Tumor Growth Factor Section, Mouse Cancer Genetics Program, Center for Cancer Research, National Cancer Institute , Frederick , MD , USA .

Connective Tissue Research

|September 2, 2015

Summary

Cripto-1 (CR-1) is an embryonic protein re-expressed in disease, acting as a co-receptor or ligand to drive cell growth and invasion. Understanding CR-1

Keywords:

Autoantibodies Cripto-1 Cripto-1 detection drug discovery inflammation

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Published on: May 30, 2017

Area of Science:

Cellular and Molecular Biology
Developmental Biology
Cancer Research

Background:

Cripto-1 (CR-1) is a multifunctional embryonic protein.
CR-1 is re-expressed during inflammation, wound repair, and malignant transformation.
It functions as a tethered co-receptor or a shed ligand, influencing cell physiology.

Purpose of the Study:

To review the role of CR-1 as an extracellular protein.
To discuss challenges in developing CR-1 quantitation assays.
To define mechanistic avenues for CR-1-targeted drug discovery.

Main Methods:

Literature review of CR-1's functions and signaling pathways.
Analysis of CR-1's involvement in cell growth, migration, invasion, and EMT.
Exploration of CR-1 binding partner proteins (BPPs) and their modulatory effects.
Discussion of experimental approaches to overcome assay development issues.

Main Results:

CR-1 mediates cell growth, migration, invasion, and epithelial-to-mesenchymal transition (EMT).
Key signaling pathways include Nodal-dependent (Smad2/3) and Nodal-independent (Src/p44/42/Akt).
Binding partner proteins (BPPs) can agonize or antagonize CR-1 bioactivity.

Conclusions:

CR-1's dual role as co-receptor/ligand highlights its complex physiological and pathological functions.
Developing accurate CR-1 quantitation assays presents challenges.
Understanding CR-1 mechanisms offers potential for novel therapeutic strategies in cancer and regenerative medicine.