Anoctamin 1 (TMEM16A) is essential for testosterone-induced prostate hyperplasia

Benign prostatic hyperplasia (BPH) is characterized by an enlargement of the prostate, causing lower urinary tract symptoms in elderly men worldwide. However, the molecular mechanism underlying the pathogenesis of BPH is unclear.

Anoctamin1 (ANO1) encodes a Ca(2+)-activated chloride channel (CaCC) that mediates various physiological functions. Here, we demonstrate that it is essential for testosterone-induced BPH. ANO1 was highly amplified in dihydrotestosterone (DHT)-treated prostate epithelial cells, whereas the selective knockdown of ANO1 inhibited DHT-induced cell proliferation. Three androgen-response elements were found in the ANO1 promoter region, which is relevant for the DHT-dependent induction of ANO1. Administration of the ANO1 blocker or Ano1 small interfering RNA, inhibited prostate enlargement and reduced histological abnormalities in vivo. We therefore concluded that ANO1 is essential for the development of prostate hyperplasia and is a potential target for the treatment of BPH.

Proceedings of the National Academy of Sciences of the United States of America. 2015 Jul 07 [Epub]

Joo Young Cha, Jungwon Wee, Jooyoung Jung, Yongwoo Jang, Byeongjun Lee, Gyu-Sang Hong, Beom Chul Chang, Yoon-La Choi, Young Kee Shin, Hye-Young Min, Ho-Young Lee, Tae-Young Na, Mi-Ock Lee, Uhtaek Oh

Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul 151-742, Korea; Drug Discovery Center, JW Pharmaceutical Co, Seoul 137-864, Korea;, Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul 151-742, Korea;, Sensory Research Center, CRI, College of Pharmacy, Seoul National University, Seoul 151-742, Korea;, Sensory Research Center, CRI, College of Pharmacy, Seoul National University, Seoul 151-742, Korea;, Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul 151-742, Korea;, Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul 151-742, Korea;, Drug Discovery Center, JW Pharmaceutical Co, Seoul 137-864, Korea;, Department of Pathology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 135-710, Korea;, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Korea. , Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Korea. , Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Korea. , Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Korea. , Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Korea. , Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul 151-742, Korea; Sensory Research Center, CRI, College of Pharmacy, Seoul National University, Seoul 151-742, Korea 

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