miR-221 Promotes Epithelial-Mesenchymal Transition through Targeting PTEN and Forms a Positive Feedback Loop with β-catenin/c-Jun Signaling Pathway in Extra-Hepatic Cholangiocarcinoma

• Jianguo Li ,

  Contributed equally to this work with: Jianguo Li, Feng Gao

  Affiliation Department of General Surgery, the First Affiliated Hospital of JILIN University, Changchun, 130021, P.R. China

  ⨯
• Lei Yao,

  Affiliation Department of General Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, 150086, P.R. China

  ⨯
• Guodong Li,

  Affiliation Department of General Surgery, the Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, P.R. China

  ⨯
• Donglai Ma,

  Affiliation Department of General Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, 150086, P.R. China

  ⨯
• Chen Sun,

  Affiliation Department of General Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, 150086, P.R. China

  ⨯
• Shuang Gao,

  Affiliation Heilongjiang Nursing College, Harbin, 150086, P.R. China

  ⨯
• Ping Zhang ,

  * E-mail: azhangpinga@126.com (PZ); gf9777@126.com (FG)

  Affiliation Department of General Surgery, the First Affiliated Hospital of JILIN University, Changchun, 130021, P.R. China

  ⨯
• Feng Gao

  Contributed equally to this work with: Jianguo Li, Feng Gao

  * E-mail: azhangpinga@126.com (PZ); gf9777@126.com (FG)

  Affiliation Department of General Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, 150086, P.R. China

  ⨯