Genome-wide cancer-specific chromatin accessibility patterns derived from archival processed xenograft tumors.
Genome-wide cancer-specific chromatin accessibility patterns derived from archival processed xenograft tumors.
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全基因组癌症特异性染色质的可及性模式来自档案处理的异种移植肿瘤。
DOI:
10.1101/gr.275219.121
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发表时间:
2021-12
期刊:
影响因子:
7
通讯作者:
Pattenden SG
中科院分区:
文献类型:
--
作者:
Marcel SS;Quimby AL;Noel MP;Jaimes OC;Mehrab-Mohseni M;Ashur SA;Velasco B;Tsuruta JK;Kasoji SK;Santos CM;Dayton PA;Parker JS;Davis IJ;Pattenden SG
Chromatin accessibility states that influence gene expression and other nuclear processes can be altered in disease. The constellation of transcription factors and chromatin regulatory complexes in cells results in characteristic patterns of chromatin accessibility. The study of these patterns in tissues has been limited because existing chromatin accessibility assays are ineffective for archival formalin-fixed, paraffin-embedded (FFPE) tissues. We have developed a method to efficiently extract intact chromatin from archival tissue via enhanced cavitation with a nanodroplet reagent consisting of a lipid shell with a liquid perfluorocarbon core. Inclusion of nanodroplets during the extraction of chromatin from FFPE tissues enhances the recovery of intact accessible and nucleosome-bound chromatin. We show that the addition of nanodroplets to the chromatin accessibility assay formaldehyde-assisted isolation of regulatory elements (FAIRE), does not affect the accessible chromatin signal. Applying the technique to FFPE human tumor xenografts, we identified tumor-relevant regions of accessible chromatin shared with those identified in primary tumors. Further, we deconvoluted non-tumor signal to identify cellular components of the tumor microenvironment. Incorporation of this method of enhanced cavitation into FAIRE offers the potential for extending chromatin accessibility to clinical diagnosis and personalized medicine, while also enabling the exploration of gene regulatory mechanisms in archival samples.
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影响因子:
5.7
作者:
Chin HG;Sun Z;Vishnu US;Hao P;Cejas P;Spracklin G;Estève PO;Xu SY;Long HW;Pradhan S
通讯作者:
Pradhan S
影响因子:
2.9
作者:
Fix, Samantha M.;Koppolu, Bhanu P.;Papadopoulou, Virginie
通讯作者:
Papadopoulou, Virginie
DOI:
10.1073/pnas.1007647107
发表时间:
2010-12-14
影响因子:
11.1
作者:
Fanelli, Mirco;Amatori, Stefano;Minucci, Saverio
通讯作者:
Minucci, Saverio
影响因子:
3.7
作者:
Carrick DM;Mehaffey MG;Sachs MC;Altekruse S;Camalier C;Chuaqui R;Cozen W;Das B;Hernandez BY;Lih CJ;Lynch CF;Makhlouf H;McGregor P;McShane LM;Phillips Rohan J;Walsh WD;Williams PM;Gillanders EM;Mechanic LE;Schully SD
通讯作者:
Schully SD
影响因子:
30.8
作者:
Corces, M. Ryan;Buenrostro, Jason D.;Wu, Beijing;Greenside, Peyton G.;Chan, Steven M.;Koenig, Julie L.;Snyder, Michael P.;Pritchard, Jonathan K.;Kundaje, Anshul;Gkeenleaf, William J.;Majeti, Ravindra;Chang, Howard Y.
通讯作者:
Chang, Howard Y.