46 research outputs found
Comparison of meta-analysis approaches for untargeted metabolomics: from raw data to pathway analysis
ํ์๋
ผ๋ฌธ (์์ฌ) -- ์์ธ๋ํ๊ต ๋ํ์ : ์ฝํ๋ํ ์ฝํ๊ณผ, 2021. 2. ๋ฐ์ ์ผ.๋์ฌ์ฒดํ ์ฐ๊ตฌ์์ ๋ฉํ๋ถ์์ ์ค์์ฑ์ด ์ปค์ง์ ๋ฐ๋ผ ๋ฉํ๋ถ์์ ์ํ ๋ค์ํ ์ํํธ์จ์ด์ ๋ถ์๊ธฐ๋ฒ์ด ๊ฐ๋ฐ๋๊ณ ์๋ค. ๋ณธ ์ฐ๊ตฌ์์๋ ๊ฐ์ ํ์์ ๊ฐ๊ฒฝ๋ณ ํ์์ ์์ ์๋ฃ๋ฅผ ๋น๊ตํ ๊ณต๊ณต ๋ฐ์ดํฐ๋ฅผ ์ด์ฉํ์ฌ ๋์ฌ์ฒด ๋ถ์์ ์ํ ๋ํ์ ์ธ ๋ฉํ ๋ถ์๋ฒ 3๊ฐ์ง๋ฅผ ๋น๊ตํ ๊ฒ์ด๋ค.
LC-MS๋ฅผ ์ด์ฉํ ๋ ๊ณต๊ณต ๋ฐ์ดํฐ๋ฅผ ๋ถ์ํ์์ผ๋ฉฐ (1) Manual integration, (2) metaXCMS๋ฅผ ์ด์ฉํ ๋ฉํ๋ถ์, (3) Multimodal XCMS๋ฅผ ์ด์ฉํ ๋ฉํ๋ถ์์ ํตํด ๋ฐ์ดํฐ๋ฅผ ๊ฒฐํฉํ ๋ค์ mummichog ๊ธฐ๋ฐ์ ๊ฒฝ๋ก ๋ถ์(pathway analysis)์ ํตํด ๊ฒฐ๊ณผ๋ฅผ ๋น๊ตํ์๋ค. ๊ทธ๋ฆฌ๊ณ ๊ธฐ์ฒดํฌ๋ก๋งํ ๊ทธ๋ํผ-์ง๋๋ถ์๊ธฐ์ ๋ฐ์ดํฐ์ ํ์ ์ก์ฒดํฌ๋ก๋งํ ๊ทธ๋ํผ-์ง๋๋ถ์๊ธฐ ๋ฐ์ดํฐ๋ฅผ ๋ถ์ํ์ฌ ๊ฒฐ๊ณผ๋ฅผ ๊ฒ์ฆํ์๋ค. (1) Manual integration์์๋ ์ผ๋ถ batch๊ฐ 1์ฐจ ๋ด์ฆ์ฐ ํฉ์ฑ ๊ฒฝ๋ก์์ ์ ์๋ฏธํ ์ฐจ์ด๊ฐ ๋ํ๋ฌ๋ค๊ณ ์์ธกํ์ผ๋ ๋ค๋ฅธ ๋ฐฐ์น์์๋ ์์ธกํ์ง ๋ชปํ์๋ค. ๋ํ, ๊ฐ ๋ฐฐ์น์ p-value๊ฐ ๊ทน๋ช
ํ ์ฐจ์ด๋ฅผ ๋ํ๋ด์๋ค. (2) metaXCMS๋ฅผ ์ด์ฉํ ๋ฉํ๋ถ์์์๋ 1์ฐจ ๋ด์ฆ์ฐ ํฉ์ฑ ๊ฒฝ๋ก, ๋ถ์ง์์๋ฏธ๋
ธ์ฐ ๋ถํด ๋์ฌ, ํด ๋ถํด ๋์ฌ์ ๋ณํ๋ฅผ ์์ธกํ์ผ๋ฉฐ ๊ธฐ์ฒดํฌ๋ก๋งํ ๊ทธ๋ํผ-์ง๋๋ถ์๊ธฐ์ ๊ฒฐ๊ณผ์ ํ์ ์ก์ฒดํฌ๋ก๋งํ ๊ทธ๋ํผ-์ง๋๋ถ์๊ธฐ์ ๊ฒฐ๊ณผ๊ฐ ์ด๋ฅผ ๋ท๋ฐ์นจํ์๋ค. (3) Multimodal XCMS๋ 1์ฐจ ๋ด์ฆ์ฐ ํฉ์ฑ ๊ฒฝ๋ก๋ฅผ ์ ์ธํ๊ณ ์ ์๋ฏธํ ๋์ฌ๊ฒฝ๋ก์ ๋ณํ๋ฅผ ์์ธกํ์ง ๋ชปํ์๋ค.
์ด ์ฐ๊ตฌ๋ฅผ ํตํด์ metaXCMS๋ฅผ ์ด์ฉํ ๋ฉํ ๋ถ์๋ฒ์ด ํจ๊ณผ์ ์ด๊ณ ์ ๋ขฐ ๊ฐ๋ฅํ โmeta-metabolomicsโ์ฐ๊ตฌ๋ฐฉ๋ฒ์์ ์ ์ํ์๋ค.As the importance of meta-analysis in metabolomics is growing rapidly, many tools and software have been developed. Here, we present a comparison of meta-analysis methods using public data that compare hepatocellular carcinoma and cirrhosis.
Two public data analyzed using LC-MS were combined by (1) manual integration, (2) metaXCMS, (3) Multimodal XCMS, and then we applied pathway analysis based on mummichog. GC-MS data and targeted LC-MS data were collected to support the results. (1) In manual integration, some batches can predict a significant difference in primary bile acid biosynthesis, while others cannot predict. Also, the p-value of each batch differs obviously. (2) metaXCMS method can predict a change of primary bile acid biosynthesis, BCAA metabolism, and heme degradation pathway. This result can be supported by targeted LC-MS data and GC-MS data. (3) Multimodal XCMS has no significant results except the predicting alteration of primary bile acid biosynthesis. Our study shows that meta-analysis using metaXCMS is an effective and reliable approach to โmeta-metabolomicsโ.๊ตญ๋ฌธ์ด๋ก 1
๋ชฉ ์ฐจ 3
List of Figures 5
List of Tables 7
List of Abbreviations 9
โ
. ์ ๋ก 10
โ
ก. ์ค ํ 12
1. ๊ณต๊ณต ๋ฐ์ดํฐ 12
1.1 MTBLS17 & MTBLS19 13
1.2 MTBLS105 15
2. ๋ฉํ ๋ถ์ 16
2.1 Manual integration 16
2.2 metaXCMS 17
2.3 Multimodal XCMS 18
3. ๋์ฌ๊ฒฝ๋ก ๋ถ์ 19
โ
ข. ๊ฒฐ๊ณผ ๋ฐ ๊ณ ์ฐฐ 21
1. ํฌ๋ก๋งํ ๊ทธ๋จ ๋ฐ์ดํฐ ํ๋ก์ธ์ฑ 21
2. Combat: Batch effect correction 22
3. ๋์ฌ๊ฒฝ๋ก ๋ถ์ 24
3.1 Manual integration 24
3.1.1 Manual integration: Biocyc ๋ฐ์ดํฐ๋ฒ ์ด์ค 24
3.1.2 Manual integration: KEGG ๋ฐ์ดํฐ๋ฒ ์ด์ค 26
3.2 metaXCMS 28
3.2.1 metaXCMS: Biocyc ๋ฐ์ดํฐ๋ฒ ์ด์ค 28
3.2.2 metaXCMS: KEGG ๋ฐ์ดํฐ๋ฒ ์ด์ค 30
3.3 Multimodal XCMS 32
4. Biocyc ๋ฐ์ดํฐ๋ฒ ์ด์ค์ KEGG ๋ฐ์ดํฐ๋ฒ ์ด์ค์ ๋น๊ต 33
โ
ฃ. ๊ฒฐ ๋ก 34
โ
ฅ. ์ฐธ๊ณ ๋ฌธํ 35
Abstract 37Maste
Ein kleiner Beitrag zu Staatsanwaltschaftsreform und neuer Grรผndung einer unabhรคngigen Spezialermittlungsbehรถrde
Role of Newscasters in South Korean TV Journalism: Gatekeeper or Advocate
This study examines how TV newscasters communicate in the
various types of news programs, in an attempt to see if there is any
difference among them in terms of the degree or extent in which
advocacy journalism is practiced. Witnessing that there is a tendency
for TV newscasters to insert their value or moral judgement in
conveying news information to audience, the author analyzed the
patterns of value insertion adopted by newscasters. It was found that
while newscasters of conventional evening news program tend to
follow the rule of objective journalism, newscasters of late night
current affairs program as well as investigative journalism program
often insert their political opinion or value when they interpret news,
predict the future development of events, present public opinion polls
on controversial issues and propose policy recommendations. This
analysis of newscaster's way of conducting news programs
demonstrates the coexistence of objective journalism and advocacy
journalism in the programs made by the public broadcaster, KBS. This
also suggests that the news program adopting advocacy journalism is
open to the criticism for failing to secure impartiality, if it does not
represent both sides involved in controversial matters