فراتحلیل (متا-آنالیز) داده‌های بیان ژن بافت پستان آلوده‌شده با باکتری اشریشیاکلی در گاوهای شیری

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری، دانشکده کشاورزی دانشگاه صنعتی اصفهان، اصفهان

2 دانشیار، دانشکده کشاورزی، دانشگاه صنعتی اصفهان، اصفهان

3 دانشیار، گروه بیوتکنولوژی دانشگاه شیراز و عضو گروه تحقیقاتی دانشگاه آدلاید- استرالیا

چکیده

تشخیص ژن‌های درگیر در صفات پیچیده مانند حساسیت به بیماری نه تنها می‌تواند موجب بهبود تشخیص و پیشگیری از بیماری مورد نظر می‌شود، بلکه در انتخاب راه‌های درمانی کارآمد و همچنین در انتخاب دام‌های مقاوم به اصلاحگران کمک خواهد کرد. در این تحقیق با هدف بالا بردن توان تجزیۀ آماری در شناسایی ژن‌ها و مسیرهای زیستی (بیولوژیکی) درگیر در بیماری ورم پستان، از فراتحلیل به روش Fisherبرای یکی کردن p-value‌های به‌دست‌آمده از تجزیۀ انفرادی داده‌های شش بررسی‌ ریزآرایه که بیان ژن بافت پستان هنگام درگیری با باکتری اشریشیاکلی (E. coli) در گاوهای شیری را بررسی کرده بودند، استفاده شد. شناسایی ژن‌هایی که در هیچ‌یک از بررسی‌های انفرادی معنی­دار نشده بودند می­تواند تأییدکنندۀ هدف بیان شده باشد که منجر به ارائۀ مجموعۀ کامل‌تری از مسیرهای زیستی مرتبط با سامانۀ ایمنی، التهاب، تجزیۀ پروتئین (پروتئولیز) و مسیرهای مرتبط با رشد و افزونش و مرگ یاخته‌ای شد."کنترل مثبت بیان پروموتور RNA پلیمراز II"مسیر جدیدی در رابطه با این بیماری است که با وجود در بر گرفتن بیشترین شمار ژن در این بررسی‌، در بررسی‌های گذشتۀ مرتبط با ورم پستان گزارش نشده است.

کلیدواژه‌ها

عنوان مقاله [English]

Meta-analysis of transcriptomic data of mammary gland infected by Escherichia coli Bacteria in dairy cows

نویسندگان [English]

  • Somayeh Sharifi 1
  • Abbas Pakdel 2
  • Esmaeil Ebrahimie 3
1 Ph. D. Candidate, Faculty of Agriculture, Isfahan University of Technology, Isfahan, Iran
2 Associate Professor, Faculty of Agriculture, Isfahan University of Technology, Isfahan, Iran
3 Associate Professor, Institute of Biotechnology, Shiraz Univeristy, Shiraz, Iran, and School of Biological Science, Faculty of Science and Engineering, Flinders University of Adelaide, Australia
چکیده [English]

Identification of disease-causing genes that underlie complex traits such as susceptibility to disease not only can improve diagnosis and the prevention of illness, but also help breeder to select resistance animals against diseases. In the current study to aim the higher power of statistical analysis to identification of genes and biological pathways related to mastitis disease, we used Fisher meta-analysis to combine p-values obtained from individual analysis of datasets extracted from 6 microarray-based studies which investigate transcriptomic data of mammary gland tissue infected by Escherichia coli (E. coli) in dairy cows. Identification of genes that did not show a significant p-value in any of the independent studies may confirm the aim and lead to introduce a more complete set of biological pathways involved in this disease such as the pathways related to immune response, inflammation, proteolysis, growth, and death of cell. Positive regulation of transcription from RNA polymerase II promoter, is new pathways related to this disease which despite of the enrichment by maximum number of up-regulated genes in this study, have not been reported in previous mastitis studies.

کلیدواژه‌ها [English]

  • Dairy Cows
  • Differential express gene
  • Escherichia coli
  • gene ontology
  • Mastitis

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سابقه مقاله

  • تاریخ دریافت: 07 اردیبهشت 1396
  • تاریخ بازنگری: 04 مهر 1396
  • تاریخ پذیرش: 28 مهر 1396

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