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A cell model for conditional profiling of androgen-receptor-interacting proteins
K A Mooslehner1, J D Davies, I A Hughes
1Department of Paediatrics, Addenbrooke's Hospital, University of Cambridge, Level 8, Box 116, Hills Road, Cambridge CB2 0QQ, UK.
Abstract:
Partial androgen insensitivity syndrome (PAIS) is associated with impaired male genital development and can be transmitted through mutations in the androgen receptor (AR). The aim of this study is to develop a cell model suitable for studying the impact AR mutations might have on AR interacting proteins. For this purpose, male genital development relevant mouse cell lines were genetically modified to express a tagged version of wild-type AR, allowing copurification of multiprotein complexes under native conditions followed by mass spectrometry. We report 57 known wild-type AR-interacting proteins identified in cells grown under proliferating and 65 under nonproliferating conditions. Of those, 47 were common to both samples suggesting different AR protein complex components in proliferating and proliferation-inhibited cells from the mouse proximal caput epididymus. These preliminary results now allow future studies to focus on replacing wild-type AR with mutant AR to uncover differences in protein interactions caused by AR mutations involved in PAIS.
Insights
Researchers developed a new cell model to study partial androgen insensitivity syndrome (PAIS). This model helps identify how androgen receptor (AR) mutations impact AR-interacting proteins crucial for male development.
Area of Science:
- Endocrinology
- Molecular Biology
- Genetics
Background:
- Partial androgen insensitivity syndrome (PAIS) results from impaired male genital development.
- Mutations in the androgen receptor (AR) gene are a common cause of PAIS.
Purpose of the Study:
- To develop a novel cell model for investigating the functional impact of AR mutations.
- To identify AR-interacting proteins affected by AR mutations relevant to PAIS.
Main Methods:
- Genetically modified mouse cell lines relevant to male genital development to express a tagged wild-type AR.
- Utilized co-purification under native conditions followed by mass spectrometry to identify AR-interacting proteins.
- Compared protein interactions in proliferating versus non-proliferating cells.
Main Results:
- Identified 57 known wild-type AR-interacting proteins in proliferating cells and 65 in non-proliferating cells.
- Found 47 common AR-interacting proteins between the two conditions.
- Observed distinct AR protein complex components in proliferating and proliferation-inhibited mouse epididymis cells.
Conclusions:
- The developed cell model successfully identified wild-type AR-interacting proteins.
- This model provides a foundation for future studies examining mutant AR interactions in PAIS.
- Future research will focus on replacing wild-type AR with mutant AR to uncover PAIS-specific protein interaction differences.
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