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NTIS 바로가기생명과학회지 = Journal of life science, v.30 no.1, 2020년, pp.45 - 57
정태준 (국립축산과학원 동물유전체과) , 정기용 (국립한국농수산대학 한우학과) , 박원철 (국립축산과학원 동물유전체과) , 손주환 (국립축산과학원 동물유전체과) , 박종은 (국립축산과학원 동물유전체과) , 채한화 (국립축산과학원 동물유전체과) , 권응기 (국립축산과학원 동물유전체과) , 안준상 (국립축산과학원 동물유전체과) , (국립축산과학원 동물유전체과) , 이지웅 (전남대학 동물공학과) , 임다정 (국립축산과학원 동물유전체과)
The prenatal period in livestock animals is crucial for meat production because net increase in the number of muscle fibers is finished before birth. However, there is no study on the growth and development mechanism of muscles in Hanwoo during this period. Therefore, to find candidate genes involve...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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소의 근생성은 어떤 세포 때문에 일어나는가? | 따라서 소의 성장에 따른 근육의 성장 및 발달과정을 살펴보는 것은 개량과 사양 연구 분야에 매우 중요하다. 소의 근생성(myogenesis)은 정자와 난자의 수정 후 약 2개월 간의 배아기를 거치면서 중간엽 줄기세포(mesenchymal stem cells, MSCs)가 증식, 분화, 발달하여 1차 근섬유(Primary myofibers)를 형성하게 되고, 이후 약 7~8개월까지 2차 근섬유(Secondary myofibers)가 형성되어 최종적으로 근육을 이루게 된다[5, 44]. 이 과정에서 다양한 유전자들(WNT, PAX3, PAX7, GLI, MRFs, MYF5, MYOD 등)이 발현 및 조절되면서 근육 형성에 직 간접적인 영향을 미친다[13]. | |
특이 발현 유전자군을 분류할 때 사용한 도구는? | 차등발현유전자군을 활용하여공발현 유전자 네트워크 분석을 구성하였으며, 유사한 발현 양상을 보이는 유전자들을 그룹화하여 6개월령 특이 발현 유전자군 5개, 9개월령 특이 발현 유전자군 2개의 모듈로 분류했다. 각 모듈은 Gene Ontology (GO) 및 KEGG pathway 분석으로 유의한 기능을 확인하였다. 그 결과, 한우 태아기 6, 9개월령 특이 발현 유전자 네트워크 중, 근육과 지방생성 대사회로와 관련된 2개의 모듈에 대해 네트워크 내에 허브 유전자를 선정할 수 있었다. | |
콜라겐이란? | Peptidyl-lysine hydroxylation과 peptidyl-proline modification 중, peptidyl-proline hydroxylation는 콜라겐(collagen) 생합성 과정과 관련되어 있다고 알려져 있다[36]. 콜라겐은 근육과 뼈를 이어주는 연결 조직인 건(tendon)의 핵심적인 구성원이며, 근육의 발달 과정에 영향을 미치는 것으로 알려져 있다[4, 21]. 이 대사회로의 모듈내 참여 유전자는 matrix metallopeptidase 14 (MMP14), prolyl 3-hydroxylase 3 (P3H3), prolyl 3-hydroxylase family member 4 (inactive)(P3H4), procollagen-lysine,2-oxoglutarate 5-dioxygenase 3(PLOD3), FKBP prolyl isomerase 10 (FKBP10)이었으며, 이 모듈내 연결 정도가 가장 높은 유전자는 BAF chromatin remodeling complex subunit BCL7C (BCL7C)로(Supplementary 2), 염색질 재구성에 관여하는 복합체의 구성원에 해당된다. |
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