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Huang, Chia-Chi Flora; Lingadahalli, Shreyas; Morova, Tunc; Ozturan, Dogancan; Hu, Eugene; Yu, Ivan Pak Lok; Linder, Simon; Hoogstraat, Marlous; Stelloo, Suzan; Sar, Funda; van der Poel, Henk; Altintas, Umut Berkay; Saffarzadeh, Mohammadali; Le Bihan, Stephane; McConeghy, Brian; Gokbayrak, Bengul; Feng, Felix Y.; Gleave, Martin E.; Bergman, Andries M.; Collins, Colin; Collins, Colin
{ "DOI": "10.1186/s13059-021-02339-6", "abstract": "Background Androgen receptor (AR) is critical to the initiation, growth, and progression of prostate cancer. Once activated, the AR binds to cis-regulatory enhancer elements on DNA that drive gene expression. Yet, there are 10-100x more binding sites than differentially expressed genes. It is unclear how or if these excess binding sites impact gene transcription. Results To characterize the regulatory logic of AR-mediated transcription, we generated a locus-specific map of enhancer activity by functionally testing all common clinical AR binding sites with Self-Transcribing Active Regulatory Regions sequencing (STARRseq). Only 7% of AR binding sites displayed androgen-dependent enhancer activity. Instead, the vast majority of AR binding sites were either inactive or constitutively active enhancers. These annotations strongly correlated with enhancer-associated features of both in vitro cell lines and clinical prostate cancer samples. Evaluating the effect of each enhancer class on transcription, we found that AR-regulated enhancers frequently interact with promoters and form central chromosomal loops that are required for transcription. Somatic mutations of these critical AR-regulated enhancers often impact enhancer activity. Conclusions Using a functional map of AR enhancer activity, we demonstrated that AR-regulated enhancers act as a regulatory hub that increases interactions with other AR binding sites and gene promoters.", "author": [ { "family": "Huang", "given": " Chia-Chi Flora" }, { "family": "Lingadahalli", "given": " Shreyas" }, { "family": "Morova", "given": " Tunc" }, { "family": "Ozturan", "given": " Dogancan" }, { "family": "Hu", "given": " Eugene" }, { "family": "Yu", "given": " Ivan Pak Lok" }, { "family": "Linder", "given": " Simon" }, { "family": "Hoogstraat", "given": " Marlous" }, { "family": "Stelloo", "given": " Suzan" }, { "family": "Sar", "given": " Funda" }, { "family": "van der Poel", "given": " Henk" }, { "family": "Altintas", "given": " Umut Berkay" }, { "family": "Saffarzadeh", "given": " Mohammadali" }, { "family": "Le Bihan", "given": " Stephane" }, { "family": "McConeghy", "given": " Brian" }, { "family": "Gokbayrak", "given": " Bengul" }, { "family": "Feng", "given": " Felix Y." }, { "family": "Gleave", "given": " Martin E." }, { "family": "Bergman", "given": " Andries M." }, { "family": "Collins", "given": " Colin" }, { "family": "Collins", "given": " Colin" } ], "container_title": "GENOME BIOLOGY", "id": "234974", "issue": "1", "issued": { "date-parts": [ [ 2021, 1, 1 ] ] }, "title": "Functional mapping of androgen receptor enhancer activity", "type": "article-journal", "volume": "22" }
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