Streck cfDNA采血管液體活檢應用表現(xiàn)

Performance of Streck cfDNA Blood Collection Tubes for Liquid Biopsy Testing

Inga Medina Diaz, Annette Nocon, Daniel H. Mehnert, Johannes Fredebohm, Frank Diehl , Frank Holtrup

Published: November 10, 2016https://doi.org/10.1371/journal.pone.0166354

摘要

目的

液體活檢的廣泛應用對室溫運送血液樣本提出了更高要求，采血管需要保持游離DNA的數(shù)量和穩(wěn)定，防止循環(huán)腫瘤DNA被基因組DNA稀釋。通過高靈敏度突變檢測技術評估Streck Cell-Free DNA BCT采血管對細胞和DNA穩(wěn)定性的保護。

方法

靜脈血樣分別用Streck Cell-Free DNA BCT和標準K2EDTA管采集。提取DNA之前采血管分別在不同溫度儲存。提取后的游離DNA進行qPCR，BEAMing和 Plasma Safe-Sequencing (Safe-SeqS)分析。

結果

用Streck Cell-Free DNA BCT采集的健康血樣室溫存儲5天后，并不影響DNA產(chǎn)量和突變水平。

結論

使用Streck Cell-Free DNA BCT采集運送的全血可以用于下游液體活檢（BEAMing和 Safe-SeqS）。由于運送溫度是重要影響因素，要獲得可靠的突變結果需要特別注意保持室溫在限定范圍內。

Objectives

Making liquid biopsy testing widely available requires a concept to ship whole blood at ambient temperatures while retaining the integrity of the cell-free DNA (cfDNA) population and stability of blood cells to prevent dilution of circulating tumor DNA (ctDNA) with wild-type genomic DNA. The cell- and DNA-stabilizing properties of Streck Cell-Free DNA BCT blood collection tubes (cfDNA BCTs) were evaluated to determine if they can be utilized in combination with highly sensitive mutation detection technologies.

Methods

Venous blood from healthy donors or patients with advanced colorectal cancer (CRC) was collected in cfDNA BCTs and standard K2EDTA tubes. Tubes were stored at different temperatures for various times before plasma preparation and DNA extraction. The isolated cfDNA was analyzed for overall DNA yield of short and long DNA fragments using qPCR as well as for mutational changes using BEAMing and Plasma Safe-Sequencing (Safe-SeqS).

Results

Collection of whole blood from healthy individuals in cfDNA BCTs and storage for up to 5 days at room temperature did not affect the DNA yield and mutation background levels (n = 60). Low-frequency mutant DNA spiked into normal blood samples as well as mutant circulating tumor DNA in blood samples from CRC patients collected in cfDNA BCTs were reliably detected after 3 days of storage at room temperature. However, blood samples stored at ≤ 10°C and at 40°C for an extended period of time showed elevated normal genomic DNA levels and an abnormally large cellular plasma interface as well as lower plasma volumes.

Conclusion

Whole blood shipped in cfDNA BCTs over several days can be used for downstream liquid biopsy testing using BEAMing and Safe-SeqS. Since the shipping temperature is a critical factor, special care has to be taken to maintain a defined room temperature range to obtain reliable mutation testing results.

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

歡迎您致電 重慶市華雅干細胞技術有限公司 為您提供Streck 230253 9mL Hybrid Plastic Cell-Free DNA BCT Fusion2 第二代升級新型混合塑料采血管現(xiàn)貨 ，  華雅干細胞-：

Streck 230253 9mL Hybrid Plastic Cell-Free DNA BCT 第二代升級新型混合塑料采血管

Streck 230253 9mL Hybrid Plastic Cell-Free DNA BCT 第二代升級新型混合塑料采血管是一種特制混合塑料的新型采血管。特制保存劑能穩(wěn)定有核血細胞，防止細胞基因組DNA的釋放，保留血漿游離循環(huán)DNA和循環(huán)腫瘤細胞（CTC），保證游離DNA的高品質分離。

產(chǎn)品訂購信息-Streck 230253 9mL Hybrid Plastic Cell-Free DNA BCT 第二代升級新型混合塑料采血管

RUO：Research Use Only

歡迎您致電 重慶市華雅干細胞技術有限公司 為您提供Streck 230253 9mL Hybrid Plastic Cell-Free DNA BCT Fusion2 第二代升級新型混合塑料采血管現(xiàn)貨 ，  華雅干細胞-： 

Streck 230253 9mL Hybrid Plastic Cell-Free DNA BCT 第二代升級新型混合塑料采血管，Streck Cell-Free DNA BCT Blood Collection Tube 218976, 218962基因無創(chuàng)管，唐氏無創(chuàng)篩查采血管，游離DNA采血管，游離RNA采血管，循環(huán)腫瘤細胞（circulating tumor cell）CTC采血管 華雅再生醫(yī)學 現(xiàn)貨供應

華雅干細胞 現(xiàn)貨供應：美國Streck 218962 Cell-Free DNA BCT Blood Collection Tube DNA基因檢測無創(chuàng)采血管和美國Streck 218976 Cell-Free RNA BCT Blood Collection Tube基因檢測無創(chuàng)采血管 規(guī)格：100管/盒，應用于：唐氏無創(chuàng)篩查采血管，游離DNA采血管，游離RNA采血管等等。華雅干細胞 現(xiàn)貨供應：BD 362761 Vacutainer® CPT™ Cell Preparation Tube 肝素鈉單核細胞制備管/采血管，60支/盒。

提供產(chǎn)品：華雅干細胞致力于為中國干細胞領域的干細胞科學研究、臍帶血/造血干細胞/臍帶/脂肪/胎盤干細胞庫、干細胞臨床轉化醫(yī)學、干細胞美容及干細胞抗衰老、免疫細胞治療、T細胞治療、臨床干細胞治療等再生醫(yī)學和個體化治療產(chǎn)業(yè)鏈的相關客戶提供：MSC間充質干細胞培養(yǎng)基、iPS/ES胚胎干細胞培養(yǎng)基、血清替代物、羊水培養(yǎng)基、基底膜基質膠細胞支架、干細胞生長分化調控因子、BioMarker 流式檢測抗體、支原體檢測試劑盒、內毒素檢測試劑盒、干細胞存儲細胞凍存袋、細胞培養(yǎng)瓶、USP級DMSO二甲基亞砜細胞凍存液、細胞培養(yǎng)相關試劑耗材儀器等種類豐富的產(chǎn)品，以“Focus on improving the quality of Stem Cells專注干細胞研究，提升干細胞品質”為己任，我們與客戶攜手為中國干細胞產(chǎn)業(yè)的發(fā)展而前行。

歡迎您致電 重慶市華雅干細胞技術有限公司 為您提供Streck 230253 9mL Hybrid Plastic Cell-Free DNA BCT Fusion2 第二代升級新型混合塑料采血管現(xiàn)貨 ，  華雅干細胞-：