• 제목/요약/키워드: In vivo embryos

검색결과 244건 처리시간 0.027초

생쥐 수정란의 핵이식에 관한 연구 I. 모성 및 부성 genome의 기능차이에 관한 연구 (Studies on nuclear transplantation in mouse embryos. I. Functional differences between maternal and paternal genomes)

  • 최상용;박충생;이효종;박희성
    • 대한수의학회지
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    • 제30권2호
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    • pp.123-127
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    • 1990
  • 모성 및 부성 genome의 기능을 알아보기 위하여 미세조작기법과 Sendai virus를 이용한 핵융합 기술을 이용하여 2개의 자성전핵만으로 구성된 2배체의 gynogenetic 수정란을 그리고 2개의 웅성전핵만으로 구성된 2배체의 androgenetic 수정란을 인위적으로 작출하였다. 이들의 작출효율은 biparental 수정란에서는 56%, gynogenetic 수정란에서는 50% 그리고 androgenetic 수정란에서는 56% 이었다. 이들을 체외에서 배양한 결과 gynogenetic 및 androgenetic 수정란은 2-세포기 이후에는 biparental 및 intact 수정란에 비하여 그 발달능이 매우 저조하였으나 이들 중 25% 이상이 포배까지 발달한 수 있음을 확인하였다. Gynogenetic 및 androgenetic 수정란을 동기화된 수란생쥐의 난관내에 이식하였던 바, androgenetic 수정란은 전혀 착상 되지 않았으나, gynogenetic 수정란에서는 착상이 확인되었다. 핵이식기법으로 인위조작된 2배체의 biparental 수정란으로부터 28마리의 생쥐 신생자를 생산하였다.

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In vitro Propagation of Junos Orange (Citrus junos Sieb.) through Nucellar Polyembroid Cultures

  • Park, Woo-Jin;Kang, Young-Min;Min, Ji-Yun;Park, Dong-Jin;Kim, Yong-Duck;Karigar, C.S.;Choi, Myung-Suk
    • 한국약용작물학회지
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    • 제12권5호
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    • pp.384-390
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    • 2004
  • An in vtro nucellar polyembryo propagation method was established with mature seed of the Citrus junos Sieb. 7-8 nucellar polyembryos per seed were induced on MS basal medium without plant growth regulators. The polyembryos developed to complete plantlets on teatment with IBA. These shoots grew further in MS medium without plant growth regulators. Rooting of shoots occurred on MS medium supplemented with IBA. These plantlets were successfully transplanted to small plastic pot containing soil mixture. Somatic embryos were induced from nucellar polyembryo and maturation occurred spontaneously from proliferating cultures on MS medium without growth regulators. Random Amplified Polymorphic DNA (RAPD) marker analysis of in vitro and in vivo grown junos orange showed identical polymorphism indicative of their genetic stability. The RAPD polymorphism produced revealed same banding pattern in each regenerant. Hence, propagaton of junos orange by nucellalr polyembryos was efficient and produced in genetically stable plants under in vitro conditions.

작약(Paeonia lactiflora Pall.)의 화사 유래 캘러스로부터 체세포배발생 (Somatic Embryogenesis from Filament-Derived Callus of Paeonia lactiflora PALL.)

  • 정재동;한증술;손재근
    • 식물조직배양학회지
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    • 제22권1호
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    • pp.47-51
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    • 1995
  • 작약(Paeonia lactifloral Pall)의 회사조직을 배양하여 체세포배의 획득 가능성을 밝히고 유묘의 대량번식에 필요한 기초자료를 얻고자 본 실험을 수행하였다. 5월 중순경 채취한 화뢰로부터 회사조직을 절취하여 2,4-D 농도를 달리한 4종 의 MS배지에 치상하였을 때 2,4-D 1.0 mg/L, 0.5 mg/L, 0.1 mg/L 첨가한 배지 순으로 캘러스의 형성과 생장이 양호하였고 생장조절제를 첨가하지 않은 배지에서는 회사조직이 갈변하여 캘러스 발생을 관찰할 수 없었으며 이들 캘러스를 설탕만 20 g/L로 줄인 동일한 생장조절제 조성의 배지에서 계대배양했을 때 증식이 양호하였다. 체세포배 유기를 위해 5 mm 크기의 캘러스를 3종의 배지에 이식했을 때2,4-D 0.5 mg/L 첨가배지에서 얻은 캘러스를 생장조절제를 첨가하지 않은 배지에서 배양했을 때 배양 80일 후 38.0%의 가장 높은 배발생률을 나타내었다. 또한 설탕 첨가농도와 활성탄 첨가유무를 달리한 6종의 생장조절제 무첨가 배지에 계대배양 중인 캘러스를 배양했을 때 2,4-D 0.5 mg/L 첨가배지에서 유기증식된 캘러스를 설탕 농도는 20 g/L로 동일하고 활성탄을 3 g/L 첨가한 배지에서 배양 60일 후 60.0%로 가장 높은 배발생률을 나타내어 배발생률을 향상시킬 수 있었다. 발생된 배들의 이식 적정시기를 구명하기 위해 발육상별로 생장조절제를 첨가하지 않은 배지에 이식했을 때 부착된 모조직으로부터 다수의 배가 유기되었는데 어뢰형 배를 이식했을 경우 배의 증식률이 1.4배로 가장 높았으며 성숙배로의 발육도 양호하였다. 유백색의 자엽이 전개된 배들은 GA3 0.3 mg/L가 첨가된 배지에 이식하여 5$^{\circ}C$ 에서 2주간 암상태로 전처리 했을 때 배양 1개월 후 37% 의 배가 발아하였으며 발아된 배들을 BA 2.0 mg/L 첨가배지로 이식함으로써 유식물체로 생장하였다.

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Antiinflammatory and Antiangiogenic Activities of Flavonoids Isolated from Belamcandae Rhizoma

  • Jung, Sang-Hoon;Ahn, Kwang-Seok;Lee, Yeon-Sil;Shin, Kuk-Hyun;Kim, Yeong-Shik
    • 대한약학회:학술대회논문집
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    • 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2-2
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    • pp.202.4-203
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    • 2003
  • The present study was carried out to clarify whether isoflavonoids isolated from Belamcandae Rhizoma (Iridaceae) inhibit inflammation and angiogenesis by the experimental methods in vitro and in vivo. Among the isolated isoflavonoids, such as irigenin, irisflorentine, and iristectorene B inhibited nitric oxide (NO) production, as measured by nitrite formation at 3-30 ${\mu}M$. Also these compounds reduced cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS) enzyme expression in a concentration dependent manner, when measured by western blotting, at 3-30 ${\mu}M$. Irigenin, irisflorentine and iristectoren B decreased angiogenesis of chick embryos in the chorioallantoic membrane assay. These compounds also reduced the proliferation of calf pulmonary arterial endothelial (CPAE) cells and found to possess relatively weak gelatinase/collagenase inhibitory activity in vitro. These compounds, when administered subcataneously at the dose of 30mg/kg for 20 days to mice implanted with murine Lewis lung carcinoma (LLC), caused a significant inhibition of tumor volume. Therefore, antiangiogenic activities of isoflavonoids from Belamcandae Rhizoma might be due to antiproliferative activities under inhibition the induction of COX-2 and iNOS enzyme.

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Engineering lacZ Reporter Gene into an ephA8 Bacterial Artificial Chromosome Using a Highly Efficient Bacterial Recombination System

  • Kim, Yu-Jin;Song, Eun-Sook;Choi, Soon-Young;Park, Soo-Chul
    • BMB Reports
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    • 제40권5호
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    • pp.656-661
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    • 2007
  • In this report, we describe an optimized method for generation of ephA8 BAC transgenic mice expressing the lacZ reporter gene under ephA8 regulatory sequences. First, we constructed a targeting vector that carries a 1.2 kb ephA8 DNA upstream of its first exon, a lacZ expression cassette, a kanamycin cassette, and a 0.7 kb ephA8 DNA downstream of its first exon. Second, the targeting vector was electroporated into cells containing the ephA8 BAC and pKOBEGA, in which recombinases induce a homologous recombination between the ephA8 BAC DNA and the targeting vector. Third, the FLP plasmid expressing the Flipase was electroporated into these bacteria to eliminate a kanamycin cassette from the recombinant BAC DNA. The appropriate structures of the modified ephA8 BAC DNA were confirmed by Southern analysis. Finally, BAC transgenic mouse embryos were generated by pronuclear injection of the recombinant BAC DNA. Whole mount X-gal staining revealed that the lacZ reporter expression is restricted to the anterior region of the developing midbrain in each transgenic embryo. These results indicate that the ephA8 BAC DNA contains most, if not all, regulatory sequences to direct temporal and spatial expression of the lacZ gene in vivo.

Antimelanogenesis Effects of Fungal Exopolysaccharides Prepared from Submerged Culture of Fomitopsis castanea Mycelia

  • Jin, Juhui;Nguyen, Thi Thanh Hanh;Kim, Changmu;Kim, Doman
    • Journal of Microbiology and Biotechnology
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    • 제29권8호
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    • pp.1204-1211
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    • 2019
  • Fungal exopolysaccharides are important natural products having diverse biological functions. In this study, exopolysaccharides from Fomitopsis castanea mycelia (FEPS) were prepared, and the highest mushroom tyrosinase inhibitory activity was found. FEPS were prepared from cultivation broth by ethanol precipitation method. The extraction yield and protein concentration of FEPS were 213.1 mg/l and 0.03%, respectively. FEPS inhibited mushroom tyrosinase with the half maximal inhibitory concentration ($IC_{50}$) of 16.5 mg/ml and dose-dependently inhibited cellular tyrosinase activity (63.9% at $50{\mu}g/ml$, and 83.3% at $100{\mu}g/ml$) in the cell-free extract of SK-MEL-5 human melanoma cell and ${\alpha}$-melanocyte-stimulating hormone (${\alpha}-MSH$)-stimulated melanin formation in intact SK-MEL-5 human melanoma cell. The $IC_{50}$ of FEPS against NO production from RAW264.7 macrophage cells was $42.8{\pm}0.64{\mu}g/ml$. By in vivo study using a zebrafish model, exposure of FEPS at $400{\mu}g/ml$ to dechorionated zebrafish embryos for 18 h decreased the pigment density, compared to that without FEPS-treated control.

FSH 투여 용량과 방법Ul 따른 한우의 과배란 처리 효율 (Superovulation Response by FSH Treatments in Hanwoo)

  • 최수호;박용수;손우진;이준희;노규진;김주헌;최상용
    • Reproductive and Developmental Biology
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    • 제31권3호
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    • pp.199-205
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    • 2007
  • 본 실험은 polyethylene glycol (PEG)에 용해시킨 FSH의 투여 방법과 용량에 따른 체내 수정란 생산 효율을 난소 반응과 회수되는 수정란의 수량과 품질, 수정란 이식 효율을 조사하였다. 공란우 88마리를 네 군으로 구분하였다. 처리 1군은 50mg의 FSH를 하루 2회 4일 동안 투여하였으며, 처리 2 및 3군은 30% PEG에 녹인 400mg과 200mg의 FSH용량을 1회 투여하였으며, 처리 4군은 CIDR로 처리 후 7일째에 30% PEG에 녹인 200mg의 FSH를 처리하였다. 과배란 처리 후 황체수에서는 처리 1, 2, 3 및 4군에서 각각 11.2, 18.5, 13.1 및 13.9개로서, 처리 2군에서 다른 처리군보다 유의적으로 (p<0.05) 높았다. 회수된 난자의 총 수에서 각 군의 결과는 8.5, 10.4, 8.7 및 7.9개였으며, 이식 가능한 수정란 수에서 각 군의 결과는 3.9, 4.3, 4.7 및 3.7개로 군간의 유의적인 차이는 보이지 않았다. 각 과배란 처리 방법에 따라 생산된 수정란의 이식 후 수태율 $36.0{\sim}50.0%)$ 및 채란시 혈중 progesterone 농도 또한 군간의 유의적인 차이는 보이지 않았다. 결론적으로 공란우에 스트레스를 적게 주며 과배란 처리 호르몬 비용과 노동력을 줄일 수 있으며, 여러 마리의 공란우를 발정 주기에 상관없이 한번에 과배란 처리를 할 수 있는 CIDR를 사용 후 7일째 200mg의 FSH를 1회 투여 방법이 축산 현장에서 적용하기에 매우 유용한 방법이라 사료된다.

초자화 동결된 생쥐 1-세포기배의 체외/체내 발달과 산자의 염색체 분석 (In Vitro/In Vivo Development of Vitrified Mouse Zygotes and Chromosome Analysis of Offspring)

  • 김묘경;김은영;이현숙;윤산현;박세필;정길생;임진호
    • 한국가축번식학회지
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    • 제21권1호
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    • pp.47-52
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    • 1997
  • 본 연구는 체외생산된 생쥐 1-세포기배의 초자화동결이 체외/체내 발달율과 수정란 이식후 태어난 산자의 염색체에 미치는 영향을 검토하기 위해 실시하였다. 체외수정하여 얻어진 생쥐 1-세포기배는 EFS40 (40% ethlyene glycol, 30% Ficoll, 0.3 M sucrose) 동결액을 이용하여, 상온 ($25^{\circ}C$)에서 30초 동안 노출한후, 액체질소에 침지하여 초자화동결하였다. 동결후 융해된 생쥐 1-세포기 수정란은 M16 배양액에서 4일동안 배반포기까지 배양하였고, 이때 배반포기까지의 체외배 발달율은 71.5%였으며, 배양된 배반포기배는 가임신 3일된 대리모의 한쪽 또는 양쪽 자궁각에 (6~8개/자궁각) 이식하였다. 모든 대리모는 분만을 유기하였으며, 그 결과를 요약하면 다음과 같다. 임신율과 체내 생존율 즉, 산자 생산(80.0, 39.6%)에 있어서 대조군 (77.8, 50.0%)과 유의차가 없었다. 또한 수정란 이식후 태어난 모든 산자의 염색체 (n=40)는 정상이었다. 이상의 결과로 미루어볼 때 본 실험에서 이용된 초자화동결방법은 생쥐 1-세포기배의 동결에 효과적으로 이용될 수 있음을 시사한다.

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돼지 자궁 세포의 3차원 배양이 Plasminogen 활성과 수정란 발육에 미치는 영향 (Effect of Three Dimensional Culture of Porcine Endometrial Cells on Their Plasminogen Activity and Pre-implantation Embryo Development after Co-culture)

  • 이상희;황보용;차혜진;김수지;김민경;정희태;양부근;박춘근
    • 한국수정란이식학회지
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    • 제29권3호
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    • pp.207-219
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    • 2014
  • Three-dimensional (3D) culture system is useful technique for study of in vivo environment and it was used various experiments. This study was investigated to establish of embryo co-culture system and changes of PAs activity in 3D cultured endometrial cells of pigs. In results, growth of stromal cells into gel matrix were detected only with endometrial and myometrial cells. The most rapid growth of stromal cells were confirmed in $2.5{\times}10^5cells/ml$ and gel matrix containing 15% FBS. Expression of urokinase-PA (uPA) after treatment of hCG (0.5, 1.0, 1.5 and 2.0 IU/ml) were higher than without hCG, but, there are not significant difference among the treatment. On the other hand, expression of uPA after treatment of $IL-1{\beta}$ (0.1, 1, 10 and 100 ng/ml) were higher than without $IL-1{\beta}$, but, there are not significant difference. Expression of uPA after treatment of estrogen (0.2, 2, 20 and 200 ng/ml) were not difference, but PA activity was significantly decreased (p<0.05). Blastocyst was producing in PZM-3 medium containing FBS and endometrial cells were grown in PZM-3 medium. When embryos development with cultured endometrial cells, cleavage rates were not significant difference and blastocyst were not produced in co-culture with stromal cells and 3D culture system. 3D culture system had similar activity to in vivo tissue and these features are very useful for study of in vivo physiology. Nevertheless 3D culture system was not proper in embryo co-culture system. Therefore, we suggest that 3D culture system with embryo co-culture need continuous research.

Cryopreservation of in vitro matured oocytes after ex vivo oocyte retrieval from gynecologic cancer patients undergoing radical surgery

  • Park, Chan Woo;Lee, Sun Hee;Yang, Kwang Moon;Lee, In Ho;Lim, Kyung Teak;Lee, Ki Heon;Kim, Tae Jin
    • Clinical and Experimental Reproductive Medicine
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    • 제43권2호
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    • pp.119-125
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    • 2016
  • Objective: The aim of this study was to report a case series of in vitro matured (IVM) oocyte freezing in gynecologic cancer patients undergoing radical surgery under time constraints as an option for fertility preservation (FP). Methods: Case series report. University-based in vitro fertilization center. Six gynecologic cancer patients who were scheduled to undergo radical surgery the next day were referred for FP. The patients had endometrial (n=2), ovarian (n=3), and double primary endometrial and ovarian (n=1) cancer. Ex vivo retrieval of immature oocytes from macroscopically normal ovarian tissue was followed by mature oocyte freezing after IVM or embryo freezing with intracytoplasmic sperm injection. Results: A total of 53 oocytes were retrieved from five patients, with a mean of 10.6 oocytes per patient. After IVM, a total of 36 mature oocytes were obtained, demonstrating a 67.9% maturation rate. With regard to the ovarian cancer patients, seven IVM oocytes were frozen from patient 3, who had stage IC cancer, whereas one IVM oocyte was frozen from patient 4, who had stage IV cancer despite being of a similar age. With regard to the endometrial cancer patients, 15 IVM oocytes from patient 1 were frozen. Five embryos were frozen after the fertilization of IVM oocytes from patient 6. Conclusion: Immature oocytes can be successfully retrieved ex vivo from macroscopically normal ovarian tissue before radical surgery. IVM oocyte freezing provides a possible FP option in patients with advanced-stage endometrial or ovarian cancer without the risk of cancer cell spillage or time delays.