Shaoguang Feng1, Songsong Huang2, Yulong Tong2, Zhongliang Chen2, Delei Shen2, Dazhou Wu2, Xin-He Lai3, Xiaoming Chen4. 1. Department of Pediatric Surgery, Hangzhou Children's Hospital, No. 195 Wenhui Rd, Xiacheng District, Hangzhou, China. 2. Department of Pediatric Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China. 3. Institute of Inflammation and Diseases, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China. 4. Department of Pediatric Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China. jackiefung@163.com.
Abstract
BACKGROUND: RNA-binding protein LIN28 is involved in maintaining the pluripotency of embryonic stem cells. It has been detected in different types of testicular and ovarian germ cell tumors (GCTs), but its status in pediatric YSTs (yolk sac tumors) is still unknown. The aim of this study was to determine the immunohistochemical profile of LIN28 in pediatric YSTs. METHODS AND RESULTS: Immunohistochemistry detection of LIN28 was performed in 22 cases of pediatric YSTs and 10 mature teratomas. The percentage of tumor cells stained was scored as 0, 1+ (1-30 % cells), 2+ (31-60 %), 3+ (61-90 %), and 4+ (>90 %). To compare its sensitive and specificity with alpha-fetoprotein (AFP), we also stained AFP in 22 cases of pediatric YSTs and 10 mature teratomas in children. LIN28 staining was high in all 22 pediatric yolk sac tumor (2+ in 1, 3+ in 1, and 4+ in 20), and weak staining of LIN28 was seen in 1 of 10 mature teratomas (1+), 9 of 10 mature teratomas were negative expression. However, the expression of AFP in pediatric YST was lower compared with Lin28 (- in 1, 1+ in 8, 2+ in 12, and 3+ in 1), and weak expression of AFP was seen in 2 of 10 mature teratomas (1+), 8 of 10 mature teratomas were negative. LIN28 had higher intensity expression than AFP in pediatric YSTs (P < 0.001). CONCLUSIONS: LIN28 is a sensitive marker for pediatric YSTs and it can be used to distinguish them from mature teratomas. LIN28 is likely to become a new and valuable biomarker for diagnosing of pediatric YST.
BACKGROUND: RNA-binding protein LIN28 is involved in maintaining the pluripotency of embryonic stem cells. It has been detected in different types of testicular and ovarian germ cell tumors (GCTs), but its status in pediatric YSTs (yolk sac tumors) is still unknown. The aim of this study was to determine the immunohistochemical profile of LIN28 in pediatric YSTs. METHODS AND RESULTS: Immunohistochemistry detection of LIN28 was performed in 22 cases of pediatric YSTs and 10 mature teratomas. The percentage of tumor cells stained was scored as 0, 1+ (1-30 % cells), 2+ (31-60 %), 3+ (61-90 %), and 4+ (>90 %). To compare its sensitive and specificity with alpha-fetoprotein (AFP), we also stained AFP in 22 cases of pediatric YSTs and 10 mature teratomas in children. LIN28 staining was high in all 22 pediatric yolk sac tumor (2+ in 1, 3+ in 1, and 4+ in 20), and weak staining of LIN28 was seen in 1 of 10 mature teratomas (1+), 9 of 10 mature teratomas were negative expression. However, the expression of AFP in pediatric YST was lower compared with Lin28 (- in 1, 1+ in 8, 2+ in 12, and 3+ in 1), and weak expression of AFP was seen in 2 of 10 mature teratomas (1+), 8 of 10 mature teratomas were negative. LIN28 had higher intensity expression than AFP in pediatric YSTs (P < 0.001). CONCLUSIONS:LIN28 is a sensitive marker for pediatric YSTs and it can be used to distinguish them from mature teratomas. LIN28 is likely to become a new and valuable biomarker for diagnosing of pediatric YST.
Authors: Dengfeng Cao; Robert W Allan; Liang Cheng; Yan Peng; Charles C Guo; Neha Dahiya; Shirin Akhi; Jianping Li Journal: Hum Pathol Date: 2011-02-01 Impact factor: 3.466
Authors: Jun Lu; Gad Getz; Eric A Miska; Ezequiel Alvarez-Saavedra; Justin Lamb; David Peck; Alejandro Sweet-Cordero; Benjamin L Ebert; Raymond H Mak; Adolfo A Ferrando; James R Downing; Tyler Jacks; H Robert Horvitz; Todd R Golub Journal: Nature Date: 2005-06-09 Impact factor: 49.962
Authors: Srinivas R Viswanathan; John T Powers; William Einhorn; Yujin Hoshida; Tony L Ng; Sara Toffanin; Maureen O'Sullivan; Jun Lu; Letha A Phillips; Victoria L Lockhart; Samar P Shah; Pradeep S Tanwar; Craig H Mermel; Rameen Beroukhim; Mohammad Azam; Jose Teixeira; Matthew Meyerson; Timothy P Hughes; Josep M Llovet; Jerald Radich; Charles G Mullighan; Todd R Golub; Poul H Sorensen; George Q Daley Journal: Nat Genet Date: 2009-05-31 Impact factor: 38.330
Authors: Jason A West; Srinivas R Viswanathan; Akiko Yabuuchi; Kerianne Cunniff; Ayumu Takeuchi; In-Hyun Park; Julia E Sero; Hao Zhu; Antonio Perez-Atayde; A Lindsay Frazier; M Azim Surani; George Q Daley Journal: Nature Date: 2009-07-05 Impact factor: 49.962