PMID- 35600407 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220716 IS - 2234-943X (Print) IS - 2234-943X (Electronic) IS - 2234-943X (Linking) VI - 12 DP - 2022 TI - Comprehensive Evaluation and Application of a Novel Method to Isolate Cell-Free DNA Derived From Bile of Biliary Tract Cancer Patients. PG - 891917 LID - 10.3389/fonc.2022.891917 [doi] LID - 891917 AB - Cell-free DNA (cfDNA) exists in various types of bodily fluids, including plasma, urine, bile, and others. Bile cfDNA could serve as a promising liquid biopsy for biliary tract cancer (BTC) patients, as bile directly contacts tumors in the biliary tract system. However, there is no commercial kit or widely acknowledged method for bile cfDNA extraction. In this study, we established a silica-membrane-based method, namely 3D-BCF, for bile cfDNA isolation, exhibiting effective recovery of DNA fragments in the spike-in assay. We then compared the 3D-BCF method with four other commercial kits: the BIOG cfDNA Easy Kit (BIOG), QIAamp DNA Mini Kit (Qiagen), MagMAX(TM) Cell-Free DNA Isolation Kit (Thermo Fisher), and NORGEN Urine Cell-Free Circulating DNA Purification Mini Kit (Norgen Biotek). The proposed 3D-BCF method exhibited the highest cfDNA isolation efficiency (p < 0.0001) from patient bile samples, and bile cfDNA of short, medium or long fragments could all be extracted effectively. To test whether the extracted bile cfDNA from patients carries tumor-related genomic information, we performed next-generation sequencing on the cfDNA and verified the gene-mutation results by polymerase chain reaction (PCR)-Sanger chromatograms and copy-number-variation (CNV) detection by fluorescence in situ hybridization (FISH) of tumor tissues. The 3D-BCF method could efficiently extract cfDNA from bile samples, providing technical support for bile cfDNA as a promising liquid biopsy for BTC patient diagnosis and prognosis. CI - Copyright (c) 2022 Shen, Zhu, Zhang, Nian, Xu, Yu, Ruan, Chen, Liu, Cao, Shi, Li, Huang, Wang, Chen, Xiong, Zhang, Fu and Zhang. FAU - Shen, Ningjia AU - Shen N AD - Department of Biliary Surgery, Shanghai Eastern Hepatobiliary Surgery Hospital, Second Military Medical University/Navy Medical University, Shanghai, China. FAU - Zhu, Bin AU - Zhu B AD - Department of Biliary Surgery, Shanghai Eastern Hepatobiliary Surgery Hospital, Second Military Medical University/Navy Medical University, Shanghai, China. FAU - Zhang, Wei AU - Zhang W AD - 3D Medicines Inc., Shanghai, China. FAU - Nian, Baoning AU - Nian B AD - 3D Medicines Inc., Shanghai, China. FAU - Xu, Xiaoya AU - Xu X AD - 3D Medicines Inc., Shanghai, China. FAU - Yu, Lianghe AU - Yu L AD - Department of Biliary Surgery, Shanghai Eastern Hepatobiliary Surgery Hospital, Second Military Medical University/Navy Medical University, Shanghai, China. FAU - Ruan, Xiang AU - Ruan X AD - Department of Biliary Surgery, Shanghai Eastern Hepatobiliary Surgery Hospital, Second Military Medical University/Navy Medical University, Shanghai, China. FAU - Chen, Sheng AU - Chen S AD - 3D Medicines Inc., Shanghai, China. FAU - Liu, Yang AU - Liu Y AD - Department of Biliary Surgery, Shanghai Eastern Hepatobiliary Surgery Hospital, Second Military Medical University/Navy Medical University, Shanghai, China. FAU - Cao, Xinkai AU - Cao X AD - 3D Medicines Inc., Shanghai, China. FAU - Shi, Xintong AU - Shi X AD - Department of Biliary Surgery, Shanghai Eastern Hepatobiliary Surgery Hospital, Second Military Medical University/Navy Medical University, Shanghai, China. FAU - Li, Zhikuan AU - Li Z AD - 3D Medicines Inc., Shanghai, China. FAU - Huang, Xingfeng AU - Huang X AD - Department of Biliary Surgery, Shanghai Eastern Hepatobiliary Surgery Hospital, Second Military Medical University/Navy Medical University, Shanghai, China. FAU - Wang, Xiang AU - Wang X AD - Department of Biliary Surgery, Shanghai Eastern Hepatobiliary Surgery Hospital, Second Military Medical University/Navy Medical University, Shanghai, China. FAU - Chen, Caifu AU - Chen C AD - 3D Medicines Inc., Shanghai, China. FAU - Xiong, Lei AU - Xiong L AD - 3D Medicines Inc., Shanghai, China. FAU - Zhang, Dadong AU - Zhang D AD - 3D Medicines Inc., Shanghai, China. FAU - Fu, Xiaohui AU - Fu X AD - Department of Biliary Surgery, Shanghai Eastern Hepatobiliary Surgery Hospital, Second Military Medical University/Navy Medical University, Shanghai, China. FAU - Zhang, Yongjie AU - Zhang Y AD - Department of Biliary Surgery, Shanghai Eastern Hepatobiliary Surgery Hospital, Second Military Medical University/Navy Medical University, Shanghai, China. LA - eng PT - Journal Article DEP - 20220504 PL - Switzerland TA - Front Oncol JT - Frontiers in oncology JID - 101568867 PMC - PMC9116272 OTO - NOTNLM OT - bile OT - cell-free DNA OT - extraction OT - liquid biopsy OT - yield COIS- Authors WZ, BN, XX, SC, XC, ZL, CC, LX, and DZ are/were employed by 3D Medicines Inc. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2022/05/24 06:00 MHDA- 2022/05/24 06:01 PMCR- 2022/01/01 CRDT- 2022/05/23 03:53 PHST- 2022/03/08 00:00 [received] PHST- 2022/03/29 00:00 [accepted] PHST- 2022/05/23 03:53 [entrez] PHST- 2022/05/24 06:00 [pubmed] PHST- 2022/05/24 06:01 [medline] PHST- 2022/01/01 00:00 [pmc-release] AID - 10.3389/fonc.2022.891917 [doi] PST - epublish SO - Front Oncol. 2022 May 4;12:891917. doi: 10.3389/fonc.2022.891917. eCollection 2022.