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| 1 | Design of 16S rRNA gene primers for 454 pyrosequencing of the human foregut microbiome显示文摘AIM:To design and validate broad-range 16S rRNA primers for use in high throughput sequencing to classify bacteria isolated from the human foregut microbiome.METHODS:A foregut microbiome dataset was constructed using 16S rRNA gene sequences obtained from oral,esophageal,and gastric microbiomes produced by Sanger sequencing in previous studies represented by 219 bacterial species.Candidate primers evaluated were from the European rRNA database.To assess the effect of sequence length on accuracy of classification,16S rRNA genes of various lengths were created by trimming the full length sequences.Sequences spanning various hypervariable regions were selected to simulate the amplicons that would be obtained using possible primer pairs.The sequences were compared with full length 16S rRNA genes for accuracy in taxonomic classification using online software at the Ribosomal Database Project (RDP).The universality of the primer set was evaluated using the RDP 16S rRNA database which is comprised of 433 306 16S rRNA genes,represented by 36 phyla.RESULTS:Truncation to 100 nucleotides(nt)downstream from the position corresponding to base 28 in the Escherichia coli 16S rRNA gene caused misclassification of 87(39.7%)of the 219 sequences,compared with misclassification of only 29(13.2%)sequences with truncation to 350 nt.Among 350-nt sequence reads within various regions of the 16S rRNA gene,the reverse read of an amplicon generated using the 343F/798R primers had the least(8.2%)effect on classification.In comparison,truncation to 900 nt mimicking single pass Sanger reads misclassified 5.0%of the 219 sequences.The 343F/798R amplicon accurately assigned 91.8%of the 219 sequences at the species level.Weighted by abundance of the species in the esophageal dataset,the 343F/798R amplicon yielded similar classification accuracy without a significant loss in species coverage(92%).Modification of the 343F/798R primers to 347F/803R increased their universality among foregut species.Assuming that a typicalpolymerase chain reaction can tolerate 2 mismatches between a primer and a template,the modified 347F and 803R primers should be able to anneal 98%and 99.6%of all 16S rRNA genes in the RDP database.CONCLUSION:347F/803R is the most suitable pair of primers for classification of foregut 16S rRNA genes but also possess universality suitable for analyses of other complex microbiomes. | Carlos W Nossa William E Oberdorf Jφrn A Aas Bruce J Paster Todd Z DeSantis Eoin L Brodie Daniel Malamud Michael A Poles Zhiheng Pei | 2010 | World Journal of Gastroenterology2010，16，33： | 16 |
| 2 | Colorectal cancer statistics, 2014显示文摘 | Rebecca Siegel Carol DeSantis Ahmedin Jemal | 2014 | CA A Cancer Journal for Clinicians2014，，2： | 15 |
| 3 | Cancer treatment and survivorship statistics, 2012显示文摘 | Rebecca Siegel Carol DeSantis Katherine Virgo Kevin Stein Angela Mariotto Tenbroeck Smith Dexter Cooper Ted Gansler Catherine Lerro Stacey Fedewa Chunchieh Lin Corinne Leach Rachel Spillers Cannady Hyunsoon Cho Steve Scoppa Mark Hachey Rebecca Kirch Ahmed | 2012 | CA: A Cancer Journal for Clinicians2012，，4： | 6 |
| 4 | Cancer treatment and survivorship statistics, 2014显示文摘 | Carol E. DeSantis Chun Chieh Lin Angela B. Mariotto Rebecca L. Siegel Kevin D. Stein Joan L. Kramer Rick Alteri Anthony S. Robbins Ahmedin Jemal | 2014 | CA: A Cancer Journal for Clinicians2014，，4： | 4 |
| 5 | Breast cancer statistics, 2013显示文摘 | Carol DeSantis Jiemin Ma Leah Bryan Ahmedin Jemal | 2014 | CA A Cancer Journal for Clinicians2014，，1： | 2 |
| 6 | Cancer treatment and survivorship statistics, 2012显示文摘 | Rebecca Siegel Carol DeSantis Katherine Virgo Kevin Stein Angela Mariotto Tenbroeck Smith Dexter Cooper Ted Gansler Catherine Lerro Stacey Fedewa Chunchieh Lin Corinne Leach Rachel Spillers Cannady Hyunsoon Cho Steve Scoppa Mark Hachey Rebecca Kirch Ahmed | 2012 | CA: A Cancer Journal for Clinicians2012，，4： | 2 |
| 7 | Effects of silver on wound management 显示文摘 | Demling RH Desanti L | 2001 | Wounds2001，13，： | 1 |
| 8 | Temporal trends in breast cancer mortality by state and race显示文摘 | DeSantis C Jemal A Ward E | 2008 | Cancer Causes Control2008，19，5： | 1 |
| 9 | Cancer treatment and survivorship statistics显示文摘 | SIEGEL R DESANTIS C VIRGO K et at | 2012 | Cancer J Clin2012，62，4： | 1 |
| 10 | Childhood and adolescent can- cer statistics, 2014 显示文摘 | Ward E Desantis C Robbins A | 2014 | CA Cancer J Clin2014，64，2： | 1 |
| 11 | Identification of critical residues of the MyD88 death domain involved in the recruitment of downstream kinases 显示文摘 | Loiarro M Gallo G Desantis R | 2009 | J Biol Chem2009，284，28： | 1 |
| 12 | Cancer treatment and survivorship statistics, 2012 显示文摘 | Siegel R DeSantis C Virgo K | 2012 | CA Cancer J Clin2012，62，： | 1 |
| 13 | Effeets of sliveron wound management显示文摘 | Demling RH DeSanti L | 2001 | Wounds2001，13，1： | 1 |
| 14 | Global patterns of cancer incidence and mortality rates and trends 显示文摘 | Jemal A Center MM DeSantis C | 2010 | Cancer Epidemiol Biomarkers Prey2010，19，8： | 1 |
| 15 | Breast cancer sta-tistics, 2011显示文摘 | DeSantis C Siegel R Bandi P | 2011 | CA Cancer J Clin2011，61，6： | 1 |
| 16 | Cancer treat-ment and survivorship statistics, 2014显示文摘 | DeSantis CE Lin C Mariotto AB | 2014 | CA Cancer JClin2014，64，4： | 1 |
| 17 | Cancer treatment and survivorship statistics,2012显示文摘 | Siegel R DeSantis C Virgo K | 2012 | CA Cancer J Clin2012，62，4： | 1 |
| 18 | Results of en- dovascular therapy and aortobifemoral grafting for Transatlantic Inter-Society type C and D aortoiliac occlu- sive disease显示文摘 | Hans SS DeSantis D Siddiqui R | 2008 | Surgery2008，144，4： | 1 |
| 19 | Treatment of pulmonary arterial hypertension in pregnaney显示文摘 | Huang S DeSantis ER | 2007 | Am J Health Syst Pharm2007，64，18： | 1 |
| 20 | Effects of sliver on wound management显示文摘 | Demling RH DeSanti L | 2001 | Wounds2001，13，1： | 1 |
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