Petra Sipilä
petra.sipila@utu.fi +358 29 450 4643 +358 50 477 3384 Kiinamyllynkatu 10 Turku |
Male fertility; epididymis; sperm maturation; androgen receptor; regulation of gene expression; rare diseases; cartilage-hair hypoplasia
Petra Sipilä completed her PhD at the Department of Biomedicine, University of Turku, Finland (2003) and continued for post-doctoral training first at Professor Andrew McMahon’s lab at Molecular and Cellular Biology, Harvard University and then as Finnish Academy Postdoctoral Researcher at the University of Turku. In 2007 she was appointed as Coordinator for GM unit at Turku Center for Disease Modeling (TCDM) and in 2012 as a director of GM unit at the Laboratory Animal Centre of University of Helsinki. Since spring 2015 she has been a principal investigator at the UTU Research Faculty of Medicine, University of Turku and Vice director of Turku Center for Disease modeling (TCDM) at the University of Turku.
Androgens are required for the male reproductive tissues. In addition, androgens regulate gene ex-pression in several non-reproductive tissues. Defects in androgen signaling are linked to diseases, such as prostate cancer. Androgens act through androgen receptor, AR, a hormone-inducible nuclear receptor. Upon ligand binding, AR is shuttled to the nucleus where it binds to the androgen response elements to regulate gene transcription. Specificity of spatiotemporal androgen regulation in different tissues is achieved by differential usage of coregulators. However, in many target tissues the regulation of cell type specific responses to androgen action remains poorly understood. Given the importance of androgen action, it is necessary to understand how androgen actions are normally regulated. We are especially interested in how tissue-specific androgen responses are mediated via AR SUMOylation, pioneer factors, collaborating transcription factors and microRNAs in the epididymis. Furthermore, we are interested in how those factors affect epididymal sperm maturation and thus male fertility.
We are also part of the FinnDisMice research consortium, that is committed to utilize CRISPR/Cas9 genome editing to generate disease models for several rare diseases of the Finnish disease heritage, which contains almost forty monogenic, rare hereditary diseases that are clearly enriched in Finland. The special phenotyping focus of our group is in cartilage-hair hypoplasia, a disease manifested by growth disorder and defective immune system.
- Body-wide genetic deficiency of poly(ADP-ribose) polymerase 14 sensitizes mice to colitis (2024)
- FASEB Journal
- HSD17B1 Compensates for HSD17B3 Deficiency in Fetal Mouse Testis but Not in Adults (2024)
- Endocrinology
- Phosphoproteomic analysis of the adaption of epididymal epithelial cells to corticosterone challenge (2024)
- Andrology
- RUNX transcription factors are essential in maintaining epididymal epithelial differentiation (2024)
- Cellular and Molecular Life Sciences
- Immortalized mouse caput epididymal epithelial (mECap18) cell line recapitulates the in-vivo environment (2023)
- Proteomics
- Scanning transmission soft X-ray spectromicroscopy of mouse kidney and liver (2023)
- Journal of Electron Spectroscopy and Related Phenomena
- The RNA-binding protein Snd1/Tudor-SN regulates hypoxia-responsive gene expression (2023)
- FASEB BioAdvances
- Elevated endogenous GDNF induces altered dopamine signalling in mice and correlates with clinical severity in schizophrenia (2022)
- Molecular Psychiatry
- High intratumoral dihydrotestosterone is associated with antiandrogen resistance in VCaP prostate cancer xenografts in castrated mice (2022)
- iScience
- Polarized epithelium-sperm co-culture system reveals stimulatory factors for the secretion of mouse epididymal quiescin sulfhydryl oxidase 1 (2022)
- Journal of Reproduction and Development
- The Finnish genetic heritage in 2022 - from diagnosis to translational research (2022)
- Disease Models and Mechanisms
- A novel role for milk fat globule-EGF factor 8 protein (MFGE8) in the mediation of mouse sperm-extracellular vesicle interactions (2021)
- Proteomics
- Modeling rare human disorders in mice: the finnish disease heritage (2021)
- Cells
- A Patient-Derived Cell Atlas Informs Precision Targeting of Glioblastoma (2020)
- Cell Reports
- The lack of HSD17B3 in male mice results in disturbed Leydig cell maturation and endocrine imbalance akin to humans with HSD17B3 deficiency (2020)
- FASEB Journal
- Androgen receptor SUMOylation regulates bone mass in male mice (2019)
- Molecular and Cellular Endocrinology
- Development of the urogenital system is regulated via the 3 ' UTR of GDNF (2019)
- Scientific Reports
Hannu Sariola, Satu Kuure, Jaan-Olle Andressoo - Lack of androgen receptor SUMOylation results in male infertility due to epididymal dysfunction (2019)
- Nature Communications
- The impact of epididymal proteins on sperm function (2019)
- Reproduction
- Adrenals Contribute to Growth of Castration-Resistant VCaP Prostate Cancer Xenografts (2018)
- American Journal of Pathology