polytene chromosomes 中文意思是什麼
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The polytene chromosomes found in the salivary gland cells are among the largest chromosomes known today.
唾液腺細胞中的多線染色體是目前已知的最大染色體之一。 -
1, the histone deacetylase inhibitors were used to feed the larve of the fly, and then the polytene chromosomes were observed under the microscope. the results indicated that the histone deacetylase inhibitors had effects on the morphology of the polytene chromosomes. it is suggested that the acetytion has effects not only on the molecular interaction but also on the structure of the chromosomes
得到的主要結果和結論如下： 1 ，通過用去乙酰化酶抑制劑處理果蠅幼蟲，觀察果蠅多線染色體在熱休克基因處的形態變化，發現去乙酰化酶抑制劑介導的乙酰化水平的升高可引起染色體結構的顯著變化，推測乙酰化修飾不僅影響分子間的相互作用而且還可以影響染色體的高級結構。 -
2, the hsp gene transcription was quantitatively determined by rt - pcr. based on this result, it is concluded that the change of acetylation level at the loci of hsp, mediated by histone deacetylase inhibitors, exerts important functions in hsp gene transcription. 3, after immunolabeling with anti acelated - lysine monoclonal antibody on the polytene chromosomes of heat shocked flies, fluorescence signals were detected at the hsp loci
2 ，利用rt - pcr技術，對去乙酰化酶抑制劑處理后的果蠅的熱休克基因的表達水平進行檢測，結果表明經組蛋白去乙酰化酶抑制劑處理后的果蠅幼蟲，其熱休克基因的表達高於基礎水平，也就是說去乙酰化酶抑制劑誘導了熱休克基因的表達。 -
The research was ultimately possible thanks to the unique composition of the fruit flies ' polytene cells - - giant, multistranded chromosomes with hundreds of sets of the genome instead of the usual two sets in conventional cells
這項研究可能最終還要感謝果蠅與眾不同的染色體組成? ?巨大、多鏈狀染色體，和一般細胞兩套染色體不同，果蠅染色體有數百套之多。
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