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논문 기본 정보

자료유형
학술저널
저자정보
Woojung Heo (DGIST) Hyeonjeong Hwang (DGIST) Jimin Kim (DGIST) Seung Hee Oh (DGIST) Youngseok Yu (Kyung Hee University) 이재형 (Kyung Hee University) 김규형 (대구경북과학기술원)
저널정보
대한생화학·분자생물학회 BMB Reports BMB Reports 제56권 제3호
발행연도
2023.3
수록면
153 - 159 (7page)

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Neuronal differentiation is highly coordinated through a cascadeof gene expression, mediated via interactions between transactingtranscription factors and cis-regulatory elements of theirtarget genes. However, the mechanisms of transcriptional regulationthat determine neuronal cell-fate are not fully understood. Here, we show that the nuclear transcription factor Y(NF-Y) subunit, NFYA-1, is necessary and sufficient to expressthe flp-3 neuropeptide gene in the IL1 neurons of C. elegans. flp-3 expression is decreased in dorsal and lateral, but notventral IL1s of nfya-1 mutants. The expression of another terminallydifferentiated gene, eat-4 vesicular glutamate transporter,is abolished, whereas the unc-8 DEG/ENaC gene and pan-neuronalgenes are expressed normally in IL1s of nfya-1 mutants. nfya-1 is expressed in and acts in IL1s to regulate flp-3 andeat-4 expression. Ectopic expression of NFYA-1 drives the expressionof flp-3 gene in other cell-types. Promoter analysis ofIL1-expressed genes results in the identification of several cisregulatorymotifs which are necessary for IL1 expression, includinga putative CCAAT-box located in the flp-3 promoterthat NFYA-1 directly interacts with. NFYA-1 and NFYA-2, togetherwith NFYB-1 and NFYC-1, exhibit partly or fully redundantroles in the regulation of flp-3 or unc-8 expression, respectively. Taken together, our data indicate that the NF-Ycomplex regulates neuronal subtype-specification via regulatinga set of terminal-differentiation genes.

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