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CD 271 (P75 neurotrophin receptor).

M L Rogers¹, A Beare, H Zola

¹Department of Human Physiology, Centre for Neuroscience, Flinders University, South Australia. mary-louise.rogers@flinders.edu.au

Journal of Biological Regulators and Homeostatic Agents

|April 9, 2008

Summary

P75NTR (CD271) is a unique Tumor Necrosis Factor receptor that binds neurotrophins, influencing nervous system development. It also acts as a receptor for pro-neurotrophins, expanding its known functions.

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Area of Science:

Neuroscience
Molecular Biology
Cell Biology

Background:

P75NTR (CD271) is a transmembrane protein in the Tumor Necrosis Factor receptor (TNFR) superfamily.
While sharing homology with other TNFRs, CD271 possesses a unique intracellular structure and signaling partners.
CD271 plays a crucial role in the growth, differentiation, and death of the nervous system.

Purpose of the Study:

To elucidate the role of P75NTR (CD271) in neurotrophin signaling.
To investigate CD271's interaction with both mature and pro-form neurotrophins.
To understand the unique signaling capabilities of CD271 within the TNFR family.

Main Methods:

Characterization of P75NTR (CD271) structure and function.
Analysis of neurotrophin binding affinities to CD271.
Investigation of downstream signaling pathways activated by CD271.

Main Results:

CD271 binds mature neurotrophins including Nerve Growth Factor (NGF), Brain-Derived Growth Factor (BDNF), Neurotrophin 3 (NT3), and Neurotrophin 4/5 (NT4/5).
Evidence suggests CD271 also functions as a receptor for the pro-forms of these neurotrophins.
CD271 exhibits unique intracellular signaling compared to other TNFR members.

Conclusions:

P75NTR (CD271) is a versatile receptor with a significant role in nervous system development and function.
The dual binding capacity for mature and pro-neurotrophins highlights CD271's complex regulatory role.
Further research into CD271 signaling may reveal novel therapeutic targets for neurological disorders.