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A rationally designed peptidomimetic biosensor for sialic acid on cell surfaces
Preeti Madhukar Chaudhary1, Raghavendra Vasudeva Murthy, Rohan Yadav
1Indian Institute of Science Education and Research, Dr. Homi Bhabbha Road, Pashan, Pune 411008, India. rkikkeri@iiserpune.ac.in.
Chemical Communications (Cambridge, England)
|April 15, 2015
Summary
We created novel peptide biosensors to detect sialic acid (Sia) on cell surfaces. This optical labeling method allows for detailed analysis of Sia composition on cells and filopodia.
Area of Science:
- Biochemistry
- Cell Biology
- Materials Science
Background:
- Sialic acids (Sia) are crucial glycans involved in cellular recognition and signaling.
- Accurate detection of Sia on cell surfaces is vital for understanding biological processes.
Purpose of the Study:
- To develop novel peptidomimetic biosensors for detecting sialic acid (Sia).
- To enable optical labeling and analysis of Sia composition on cell surfaces and filopodia.
Main Methods:
- Peptide backbone modification with boronic acid and arginine groups.
- Conjugation of designed peptides to fluorescent streptavidin via biotin.
- Application of the biosensor for optical labeling of cells.
Main Results:
- Successful development of peptidomimetic biosensors targeting sialic acid.
- Demonstrated ability to optically label cells and detect Sia.
- Enabled visualization of Sia distribution on cell surfaces and filopodia.
Conclusions:
- The developed biosensors offer a unique approach for detecting cell surface sialic acid.
- This method provides new opportunities for studying Sia-mediated cellular functions.
- The biosensor technology has potential applications in diagnostics and research.
